git.oblomov.eu Git - linux-2.6/blob - drivers/net/niu.c

   1 /* niu.c: Neptune ethernet driver.
   2  *
   3  * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/init.h>
   8 #include <linux/pci.h>
   9 #include <linux/dma-mapping.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/ethtool.h>
  12 #include <linux/etherdevice.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/delay.h>
  15 #include <linux/bitops.h>
  16 #include <linux/mii.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/if_vlan.h>
  19 #include <linux/ip.h>
  20 #include <linux/in.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/log2.h>
  23 #include <linux/jiffies.h>
  24 #include <linux/crc32.h>
  25
  26 #include <linux/io.h>
  27
  28 #ifdef CONFIG_SPARC64
  29 #include <linux/of_device.h>
  30 #endif
  31
  32 #include "niu.h"
  33
  34 #define DRV_MODULE_NAME         "niu"
  35 #define PFX DRV_MODULE_NAME     ": "
  36 #define DRV_MODULE_VERSION      "1.0"
  37 #define DRV_MODULE_RELDATE      "Nov 14, 2008"
  38
  39 static char version[] __devinitdata =
  40         DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  41
  42 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
  43 MODULE_DESCRIPTION("NIU ethernet driver");
  44 MODULE_LICENSE("GPL");
  45 MODULE_VERSION(DRV_MODULE_VERSION);
  46
  47 #ifndef DMA_44BIT_MASK
  48 #define DMA_44BIT_MASK  0x00000fffffffffffULL
  49 #endif
  50
  51 #ifndef readq
  52 static u64 readq(void __iomem *reg)
  53 {
  54         return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
  55 }
  56
  57 static void writeq(u64 val, void __iomem *reg)
  58 {
  59         writel(val & 0xffffffff, reg);
  60         writel(val >> 32, reg + 0x4UL);
  61 }
  62 #endif
  63
  64 static struct pci_device_id niu_pci_tbl[] = {
  65         {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
  66         {}
  67 };
  68
  69 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
  70
  71 #define NIU_TX_TIMEOUT                  (5 * HZ)
  72
  73 #define nr64(reg)               readq(np->regs + (reg))
  74 #define nw64(reg, val)          writeq((val), np->regs + (reg))
  75
  76 #define nr64_mac(reg)           readq(np->mac_regs + (reg))
  77 #define nw64_mac(reg, val)      writeq((val), np->mac_regs + (reg))
  78
  79 #define nr64_ipp(reg)           readq(np->regs + np->ipp_off + (reg))
  80 #define nw64_ipp(reg, val)      writeq((val), np->regs + np->ipp_off + (reg))
  81
  82 #define nr64_pcs(reg)           readq(np->regs + np->pcs_off + (reg))
  83 #define nw64_pcs(reg, val)      writeq((val), np->regs + np->pcs_off + (reg))
  84
  85 #define nr64_xpcs(reg)          readq(np->regs + np->xpcs_off + (reg))
  86 #define nw64_xpcs(reg, val)     writeq((val), np->regs + np->xpcs_off + (reg))
  87
  88 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
  89
  90 static int niu_debug;
  91 static int debug = -1;
  92 module_param(debug, int, 0);
  93 MODULE_PARM_DESC(debug, "NIU debug level");
  94
  95 #define niudbg(TYPE, f, a...) \
  96 do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
  97                 printk(KERN_DEBUG PFX f, ## a); \
  98 } while (0)
  99
 100 #define niuinfo(TYPE, f, a...) \
 101 do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
 102                 printk(KERN_INFO PFX f, ## a); \
 103 } while (0)
 104
 105 #define niuwarn(TYPE, f, a...) \
 106 do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
 107                 printk(KERN_WARNING PFX f, ## a); \
 108 } while (0)
 109
 110 #define niu_lock_parent(np, flags) \
 111         spin_lock_irqsave(&np->parent->lock, flags)
 112 #define niu_unlock_parent(np, flags) \
 113         spin_unlock_irqrestore(&np->parent->lock, flags)
 114
 115 static int serdes_init_10g_serdes(struct niu *np);
 116
 117 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
 118                                      u64 bits, int limit, int delay)
 119 {
 120         while (--limit >= 0) {
 121                 u64 val = nr64_mac(reg);
 122
 123                 if (!(val & bits))
 124                         break;
 125                 udelay(delay);
 126         }
 127         if (limit < 0)
 128                 return -ENODEV;
 129         return 0;
 130 }
 131
 132 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
 133                                         u64 bits, int limit, int delay,
 134                                         const char *reg_name)
 135 {
 136         int err;
 137
 138         nw64_mac(reg, bits);
 139         err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
 140         if (err)
 141                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
 142                         "would not clear, val[%llx]\n",
 143                         np->dev->name, (unsigned long long) bits, reg_name,
 144                         (unsigned long long) nr64_mac(reg));
 145         return err;
 146 }
 147
 148 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 149 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 150         __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 151 })
 152
 153 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
 154                                      u64 bits, int limit, int delay)
 155 {
 156         while (--limit >= 0) {
 157                 u64 val = nr64_ipp(reg);
 158
 159                 if (!(val & bits))
 160                         break;
 161                 udelay(delay);
 162         }
 163         if (limit < 0)
 164                 return -ENODEV;
 165         return 0;
 166 }
 167
 168 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
 169                                         u64 bits, int limit, int delay,
 170                                         const char *reg_name)
 171 {
 172         int err;
 173         u64 val;
 174
 175         val = nr64_ipp(reg);
 176         val |= bits;
 177         nw64_ipp(reg, val);
 178
 179         err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
 180         if (err)
 181                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
 182                         "would not clear, val[%llx]\n",
 183                         np->dev->name, (unsigned long long) bits, reg_name,
 184                         (unsigned long long) nr64_ipp(reg));
 185         return err;
 186 }
 187
 188 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 189 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 190         __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 191 })
 192
 193 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
 194                                  u64 bits, int limit, int delay)
 195 {
 196         while (--limit >= 0) {
 197                 u64 val = nr64(reg);
 198
 199                 if (!(val & bits))
 200                         break;
 201                 udelay(delay);
 202         }
 203         if (limit < 0)
 204                 return -ENODEV;
 205         return 0;
 206 }
 207
 208 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
 209 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 210         __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
 211 })
 212
 213 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
 214                                     u64 bits, int limit, int delay,
 215                                     const char *reg_name)
 216 {
 217         int err;
 218
 219         nw64(reg, bits);
 220         err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
 221         if (err)
 222                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
 223                         "would not clear, val[%llx]\n",
 224                         np->dev->name, (unsigned long long) bits, reg_name,
 225                         (unsigned long long) nr64(reg));
 226         return err;
 227 }
 228
 229 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 230 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 231         __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 232 })
 233
 234 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
 235 {
 236         u64 val = (u64) lp->timer;
 237
 238         if (on)
 239                 val |= LDG_IMGMT_ARM;
 240
 241         nw64(LDG_IMGMT(lp->ldg_num), val);
 242 }
 243
 244 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
 245 {
 246         unsigned long mask_reg, bits;
 247         u64 val;
 248
 249         if (ldn < 0 || ldn > LDN_MAX)
 250                 return -EINVAL;
 251
 252         if (ldn < 64) {
 253                 mask_reg = LD_IM0(ldn);
 254                 bits = LD_IM0_MASK;
 255         } else {
 256                 mask_reg = LD_IM1(ldn - 64);
 257                 bits = LD_IM1_MASK;
 258         }
 259
 260         val = nr64(mask_reg);
 261         if (on)
 262                 val &= ~bits;
 263         else
 264                 val |= bits;
 265         nw64(mask_reg, val);
 266
 267         return 0;
 268 }
 269
 270 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
 271 {
 272         struct niu_parent *parent = np->parent;
 273         int i;
 274
 275         for (i = 0; i <= LDN_MAX; i++) {
 276                 int err;
 277
 278                 if (parent->ldg_map[i] != lp->ldg_num)
 279                         continue;
 280
 281                 err = niu_ldn_irq_enable(np, i, on);
 282                 if (err)
 283                         return err;
 284         }
 285         return 0;
 286 }
 287
 288 static int niu_enable_interrupts(struct niu *np, int on)
 289 {
 290         int i;
 291
 292         for (i = 0; i < np->num_ldg; i++) {
 293                 struct niu_ldg *lp = &np->ldg[i];
 294                 int err;
 295
 296                 err = niu_enable_ldn_in_ldg(np, lp, on);
 297                 if (err)
 298                         return err;
 299         }
 300         for (i = 0; i < np->num_ldg; i++)
 301                 niu_ldg_rearm(np, &np->ldg[i], on);
 302
 303         return 0;
 304 }
 305
 306 static u32 phy_encode(u32 type, int port)
 307 {
 308         return (type << (port * 2));
 309 }
 310
 311 static u32 phy_decode(u32 val, int port)
 312 {
 313         return (val >> (port * 2)) & PORT_TYPE_MASK;
 314 }
 315
 316 static int mdio_wait(struct niu *np)
 317 {
 318         int limit = 1000;
 319         u64 val;
 320
 321         while (--limit > 0) {
 322                 val = nr64(MIF_FRAME_OUTPUT);
 323                 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
 324                         return val & MIF_FRAME_OUTPUT_DATA;
 325
 326                 udelay(10);
 327         }
 328
 329         return -ENODEV;
 330 }
 331
 332 static int mdio_read(struct niu *np, int port, int dev, int reg)
 333 {
 334         int err;
 335
 336         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 337         err = mdio_wait(np);
 338         if (err < 0)
 339                 return err;
 340
 341         nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
 342         return mdio_wait(np);
 343 }
 344
 345 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
 346 {
 347         int err;
 348
 349         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 350         err = mdio_wait(np);
 351         if (err < 0)
 352                 return err;
 353
 354         nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
 355         err = mdio_wait(np);
 356         if (err < 0)
 357                 return err;
 358
 359         return 0;
 360 }
 361
 362 static int mii_read(struct niu *np, int port, int reg)
 363 {
 364         nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
 365         return mdio_wait(np);
 366 }
 367
 368 static int mii_write(struct niu *np, int port, int reg, int data)
 369 {
 370         int err;
 371
 372         nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
 373         err = mdio_wait(np);
 374         if (err < 0)
 375                 return err;
 376
 377         return 0;
 378 }
 379
 380 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
 381 {
 382         int err;
 383
 384         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 385                          ESR2_TI_PLL_TX_CFG_L(channel),
 386                          val & 0xffff);
 387         if (!err)
 388                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 389                                  ESR2_TI_PLL_TX_CFG_H(channel),
 390                                  val >> 16);
 391         return err;
 392 }
 393
 394 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
 395 {
 396         int err;
 397
 398         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 399                          ESR2_TI_PLL_RX_CFG_L(channel),
 400                          val & 0xffff);
 401         if (!err)
 402                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 403                                  ESR2_TI_PLL_RX_CFG_H(channel),
 404                                  val >> 16);
 405         return err;
 406 }
 407
 408 /* Mode is always 10G fiber.  */
 409 static int serdes_init_niu_10g_fiber(struct niu *np)
 410 {
 411         struct niu_link_config *lp = &np->link_config;
 412         u32 tx_cfg, rx_cfg;
 413         unsigned long i;
 414
 415         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 416         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 417                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 418                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 419
 420         if (lp->loopback_mode == LOOPBACK_PHY) {
 421                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 422
 423                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 424                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 425
 426                 tx_cfg |= PLL_TX_CFG_ENTEST;
 427                 rx_cfg |= PLL_RX_CFG_ENTEST;
 428         }
 429
 430         /* Initialize all 4 lanes of the SERDES.  */
 431         for (i = 0; i < 4; i++) {
 432                 int err = esr2_set_tx_cfg(np, i, tx_cfg);
 433                 if (err)
 434                         return err;
 435         }
 436
 437         for (i = 0; i < 4; i++) {
 438                 int err = esr2_set_rx_cfg(np, i, rx_cfg);
 439                 if (err)
 440                         return err;
 441         }
 442
 443         return 0;
 444 }
 445
 446 static int serdes_init_niu_1g_serdes(struct niu *np)
 447 {
 448         struct niu_link_config *lp = &np->link_config;
 449         u16 pll_cfg, pll_sts;
 450         int max_retry = 100;
 451         u64 uninitialized_var(sig), mask, val;
 452         u32 tx_cfg, rx_cfg;
 453         unsigned long i;
 454         int err;
 455
 456         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
 457                   PLL_TX_CFG_RATE_HALF);
 458         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 459                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 460                   PLL_RX_CFG_RATE_HALF);
 461
 462         if (np->port == 0)
 463                 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
 464
 465         if (lp->loopback_mode == LOOPBACK_PHY) {
 466                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 467
 468                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 469                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 470
 471                 tx_cfg |= PLL_TX_CFG_ENTEST;
 472                 rx_cfg |= PLL_RX_CFG_ENTEST;
 473         }
 474
 475         /* Initialize PLL for 1G */
 476         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
 477
 478         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 479                          ESR2_TI_PLL_CFG_L, pll_cfg);
 480         if (err) {
 481                 dev_err(np->device, PFX "NIU Port %d "
 482                         "serdes_init_niu_1g_serdes: "
 483                         "mdio write to ESR2_TI_PLL_CFG_L failed", np->port);
 484                 return err;
 485         }
 486
 487         pll_sts = PLL_CFG_ENPLL;
 488
 489         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 490                          ESR2_TI_PLL_STS_L, pll_sts);
 491         if (err) {
 492                 dev_err(np->device, PFX "NIU Port %d "
 493                         "serdes_init_niu_1g_serdes: "
 494                         "mdio write to ESR2_TI_PLL_STS_L failed", np->port);
 495                 return err;
 496         }
 497
 498         udelay(200);
 499
 500         /* Initialize all 4 lanes of the SERDES.  */
 501         for (i = 0; i < 4; i++) {
 502                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 503                 if (err)
 504                         return err;
 505         }
 506
 507         for (i = 0; i < 4; i++) {
 508                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 509                 if (err)
 510                         return err;
 511         }
 512
 513         switch (np->port) {
 514         case 0:
 515                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
 516                 mask = val;
 517                 break;
 518
 519         case 1:
 520                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
 521                 mask = val;
 522                 break;
 523
 524         default:
 525                 return -EINVAL;
 526         }
 527
 528         while (max_retry--) {
 529                 sig = nr64(ESR_INT_SIGNALS);
 530                 if ((sig & mask) == val)
 531                         break;
 532
 533                 mdelay(500);
 534         }
 535
 536         if ((sig & mask) != val) {
 537                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
 538                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
 539                 return -ENODEV;
 540         }
 541
 542         return 0;
 543 }
 544
 545 static int serdes_init_niu_10g_serdes(struct niu *np)
 546 {
 547         struct niu_link_config *lp = &np->link_config;
 548         u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
 549         int max_retry = 100;
 550         u64 uninitialized_var(sig), mask, val;
 551         unsigned long i;
 552         int err;
 553
 554         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 555         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 556                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 557                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 558
 559         if (lp->loopback_mode == LOOPBACK_PHY) {
 560                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 561
 562                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 563                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 564
 565                 tx_cfg |= PLL_TX_CFG_ENTEST;
 566                 rx_cfg |= PLL_RX_CFG_ENTEST;
 567         }
 568
 569         /* Initialize PLL for 10G */
 570         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
 571
 572         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 573                          ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
 574         if (err) {
 575                 dev_err(np->device, PFX "NIU Port %d "
 576                         "serdes_init_niu_10g_serdes: "
 577                         "mdio write to ESR2_TI_PLL_CFG_L failed", np->port);
 578                 return err;
 579         }
 580
 581         pll_sts = PLL_CFG_ENPLL;
 582
 583         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 584                          ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
 585         if (err) {
 586                 dev_err(np->device, PFX "NIU Port %d "
 587                         "serdes_init_niu_10g_serdes: "
 588                         "mdio write to ESR2_TI_PLL_STS_L failed", np->port);
 589                 return err;
 590         }
 591
 592         udelay(200);
 593
 594         /* Initialize all 4 lanes of the SERDES.  */
 595         for (i = 0; i < 4; i++) {
 596                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 597                 if (err)
 598                         return err;
 599         }
 600
 601         for (i = 0; i < 4; i++) {
 602                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 603                 if (err)
 604                         return err;
 605         }
 606
 607         /* check if serdes is ready */
 608
 609         switch (np->port) {
 610         case 0:
 611                 mask = ESR_INT_SIGNALS_P0_BITS;
 612                 val = (ESR_INT_SRDY0_P0 |
 613                        ESR_INT_DET0_P0 |
 614                        ESR_INT_XSRDY_P0 |
 615                        ESR_INT_XDP_P0_CH3 |
 616                        ESR_INT_XDP_P0_CH2 |
 617                        ESR_INT_XDP_P0_CH1 |
 618                        ESR_INT_XDP_P0_CH0);
 619                 break;
 620
 621         case 1:
 622                 mask = ESR_INT_SIGNALS_P1_BITS;
 623                 val = (ESR_INT_SRDY0_P1 |
 624                        ESR_INT_DET0_P1 |
 625                        ESR_INT_XSRDY_P1 |
 626                        ESR_INT_XDP_P1_CH3 |
 627                        ESR_INT_XDP_P1_CH2 |
 628                        ESR_INT_XDP_P1_CH1 |
 629                        ESR_INT_XDP_P1_CH0);
 630                 break;
 631
 632         default:
 633                 return -EINVAL;
 634         }
 635
 636         while (max_retry--) {
 637                 sig = nr64(ESR_INT_SIGNALS);
 638                 if ((sig & mask) == val)
 639                         break;
 640
 641                 mdelay(500);
 642         }
 643
 644         if ((sig & mask) != val) {
 645                 pr_info(PFX "NIU Port %u signal bits [%08x] are not "
 646                         "[%08x] for 10G...trying 1G\n",
 647                         np->port, (int) (sig & mask), (int) val);
 648
 649                 /* 10G failed, try initializing at 1G */
 650                 err = serdes_init_niu_1g_serdes(np);
 651                 if (!err) {
 652                         np->flags &= ~NIU_FLAGS_10G;
 653                         np->mac_xcvr = MAC_XCVR_PCS;
 654                 }  else {
 655                         dev_err(np->device, PFX "Port %u 10G/1G SERDES "
 656                                 "Link Failed \n", np->port);
 657                         return -ENODEV;
 658                 }
 659         }
 660         return 0;
 661 }
 662
 663 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
 664 {
 665         int err;
 666
 667         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
 668         if (err >= 0) {
 669                 *val = (err & 0xffff);
 670                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 671                                 ESR_RXTX_CTRL_H(chan));
 672                 if (err >= 0)
 673                         *val |= ((err & 0xffff) << 16);
 674                 err = 0;
 675         }
 676         return err;
 677 }
 678
 679 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
 680 {
 681         int err;
 682
 683         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 684                         ESR_GLUE_CTRL0_L(chan));
 685         if (err >= 0) {
 686                 *val = (err & 0xffff);
 687                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 688                                 ESR_GLUE_CTRL0_H(chan));
 689                 if (err >= 0) {
 690                         *val |= ((err & 0xffff) << 16);
 691                         err = 0;
 692                 }
 693         }
 694         return err;
 695 }
 696
 697 static int esr_read_reset(struct niu *np, u32 *val)
 698 {
 699         int err;
 700
 701         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 702                         ESR_RXTX_RESET_CTRL_L);
 703         if (err >= 0) {
 704                 *val = (err & 0xffff);
 705                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 706                                 ESR_RXTX_RESET_CTRL_H);
 707                 if (err >= 0) {
 708                         *val |= ((err & 0xffff) << 16);
 709                         err = 0;
 710                 }
 711         }
 712         return err;
 713 }
 714
 715 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
 716 {
 717         int err;
 718
 719         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 720                          ESR_RXTX_CTRL_L(chan), val & 0xffff);
 721         if (!err)
 722                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 723                                  ESR_RXTX_CTRL_H(chan), (val >> 16));
 724         return err;
 725 }
 726
 727 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
 728 {
 729         int err;
 730
 731         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 732                         ESR_GLUE_CTRL0_L(chan), val & 0xffff);
 733         if (!err)
 734                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 735                                  ESR_GLUE_CTRL0_H(chan), (val >> 16));
 736         return err;
 737 }
 738
 739 static int esr_reset(struct niu *np)
 740 {
 741         u32 uninitialized_var(reset);
 742         int err;
 743
 744         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 745                          ESR_RXTX_RESET_CTRL_L, 0x0000);
 746         if (err)
 747                 return err;
 748         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 749                          ESR_RXTX_RESET_CTRL_H, 0xffff);
 750         if (err)
 751                 return err;
 752         udelay(200);
 753
 754         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 755                          ESR_RXTX_RESET_CTRL_L, 0xffff);
 756         if (err)
 757                 return err;
 758         udelay(200);
 759
 760         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 761                          ESR_RXTX_RESET_CTRL_H, 0x0000);
 762         if (err)
 763                 return err;
 764         udelay(200);
 765
 766         err = esr_read_reset(np, &reset);
 767         if (err)
 768                 return err;
 769         if (reset != 0) {
 770                 dev_err(np->device, PFX "Port %u ESR_RESET "
 771                         "did not clear [%08x]\n",
 772                         np->port, reset);
 773                 return -ENODEV;
 774         }
 775
 776         return 0;
 777 }
 778
 779 static int serdes_init_10g(struct niu *np)
 780 {
 781         struct niu_link_config *lp = &np->link_config;
 782         unsigned long ctrl_reg, test_cfg_reg, i;
 783         u64 ctrl_val, test_cfg_val, sig, mask, val;
 784         int err;
 785
 786         switch (np->port) {
 787         case 0:
 788                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 789                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 790                 break;
 791         case 1:
 792                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 793                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 794                 break;
 795
 796         default:
 797                 return -EINVAL;
 798         }
 799         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 800                     ENET_SERDES_CTRL_SDET_1 |
 801                     ENET_SERDES_CTRL_SDET_2 |
 802                     ENET_SERDES_CTRL_SDET_3 |
 803                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 804                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 805                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 806                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 807                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 808                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 809                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 810                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 811         test_cfg_val = 0;
 812
 813         if (lp->loopback_mode == LOOPBACK_PHY) {
 814                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 815                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 816                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 817                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 818                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 819                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 820                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 821                                   ENET_SERDES_TEST_MD_3_SHIFT));
 822         }
 823
 824         nw64(ctrl_reg, ctrl_val);
 825         nw64(test_cfg_reg, test_cfg_val);
 826
 827         /* Initialize all 4 lanes of the SERDES.  */
 828         for (i = 0; i < 4; i++) {
 829                 u32 rxtx_ctrl, glue0;
 830
 831                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 832                 if (err)
 833                         return err;
 834                 err = esr_read_glue0(np, i, &glue0);
 835                 if (err)
 836                         return err;
 837
 838                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 839                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 840                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 841
 842                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 843                            ESR_GLUE_CTRL0_THCNT |
 844                            ESR_GLUE_CTRL0_BLTIME);
 845                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 846                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 847                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 848                           (BLTIME_300_CYCLES <<
 849                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 850
 851                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 852                 if (err)
 853                         return err;
 854                 err = esr_write_glue0(np, i, glue0);
 855                 if (err)
 856                         return err;
 857         }
 858
 859         err = esr_reset(np);
 860         if (err)
 861                 return err;
 862
 863         sig = nr64(ESR_INT_SIGNALS);
 864         switch (np->port) {
 865         case 0:
 866                 mask = ESR_INT_SIGNALS_P0_BITS;
 867                 val = (ESR_INT_SRDY0_P0 |
 868                        ESR_INT_DET0_P0 |
 869                        ESR_INT_XSRDY_P0 |
 870                        ESR_INT_XDP_P0_CH3 |
 871                        ESR_INT_XDP_P0_CH2 |
 872                        ESR_INT_XDP_P0_CH1 |
 873                        ESR_INT_XDP_P0_CH0);
 874                 break;
 875
 876         case 1:
 877                 mask = ESR_INT_SIGNALS_P1_BITS;
 878                 val = (ESR_INT_SRDY0_P1 |
 879                        ESR_INT_DET0_P1 |
 880                        ESR_INT_XSRDY_P1 |
 881                        ESR_INT_XDP_P1_CH3 |
 882                        ESR_INT_XDP_P1_CH2 |
 883                        ESR_INT_XDP_P1_CH1 |
 884                        ESR_INT_XDP_P1_CH0);
 885                 break;
 886
 887         default:
 888                 return -EINVAL;
 889         }
 890
 891         if ((sig & mask) != val) {
 892                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
 893                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 894                         return 0;
 895                 }
 896                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
 897                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
 898                 return -ENODEV;
 899         }
 900         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
 901                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 902         return 0;
 903 }
 904
 905 static int serdes_init_1g(struct niu *np)
 906 {
 907         u64 val;
 908
 909         val = nr64(ENET_SERDES_1_PLL_CFG);
 910         val &= ~ENET_SERDES_PLL_FBDIV2;
 911         switch (np->port) {
 912         case 0:
 913                 val |= ENET_SERDES_PLL_HRATE0;
 914                 break;
 915         case 1:
 916                 val |= ENET_SERDES_PLL_HRATE1;
 917                 break;
 918         case 2:
 919                 val |= ENET_SERDES_PLL_HRATE2;
 920                 break;
 921         case 3:
 922                 val |= ENET_SERDES_PLL_HRATE3;
 923                 break;
 924         default:
 925                 return -EINVAL;
 926         }
 927         nw64(ENET_SERDES_1_PLL_CFG, val);
 928
 929         return 0;
 930 }
 931
 932 static int serdes_init_1g_serdes(struct niu *np)
 933 {
 934         struct niu_link_config *lp = &np->link_config;
 935         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
 936         u64 ctrl_val, test_cfg_val, sig, mask, val;
 937         int err;
 938         u64 reset_val, val_rd;
 939
 940         val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
 941                 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
 942                 ENET_SERDES_PLL_FBDIV0;
 943         switch (np->port) {
 944         case 0:
 945                 reset_val =  ENET_SERDES_RESET_0;
 946                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 947                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 948                 pll_cfg = ENET_SERDES_0_PLL_CFG;
 949                 break;
 950         case 1:
 951                 reset_val =  ENET_SERDES_RESET_1;
 952                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 953                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 954                 pll_cfg = ENET_SERDES_1_PLL_CFG;
 955                 break;
 956
 957         default:
 958                 return -EINVAL;
 959         }
 960         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 961                     ENET_SERDES_CTRL_SDET_1 |
 962                     ENET_SERDES_CTRL_SDET_2 |
 963                     ENET_SERDES_CTRL_SDET_3 |
 964                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 965                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 966                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 967                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 968                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 969                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 970                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 971                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 972         test_cfg_val = 0;
 973
 974         if (lp->loopback_mode == LOOPBACK_PHY) {
 975                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 976                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 977                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 978                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 979                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 980                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 981                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 982                                   ENET_SERDES_TEST_MD_3_SHIFT));
 983         }
 984
 985         nw64(ENET_SERDES_RESET, reset_val);
 986         mdelay(20);
 987         val_rd = nr64(ENET_SERDES_RESET);
 988         val_rd &= ~reset_val;
 989         nw64(pll_cfg, val);
 990         nw64(ctrl_reg, ctrl_val);
 991         nw64(test_cfg_reg, test_cfg_val);
 992         nw64(ENET_SERDES_RESET, val_rd);
 993         mdelay(2000);
 994
 995         /* Initialize all 4 lanes of the SERDES.  */
 996         for (i = 0; i < 4; i++) {
 997                 u32 rxtx_ctrl, glue0;
 998
 999                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
1000                 if (err)
1001                         return err;
1002                 err = esr_read_glue0(np, i, &glue0);
1003                 if (err)
1004                         return err;
1005
1006                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
1007                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
1008                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
1009
1010                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
1011                            ESR_GLUE_CTRL0_THCNT |
1012                            ESR_GLUE_CTRL0_BLTIME);
1013                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
1014                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
1015                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
1016                           (BLTIME_300_CYCLES <<
1017                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
1018
1019                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
1020                 if (err)
1021                         return err;
1022                 err = esr_write_glue0(np, i, glue0);
1023                 if (err)
1024                         return err;
1025         }
1026
1027
1028         sig = nr64(ESR_INT_SIGNALS);
1029         switch (np->port) {
1030         case 0:
1031                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1032                 mask = val;
1033                 break;
1034
1035         case 1:
1036                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1037                 mask = val;
1038                 break;
1039
1040         default:
1041                 return -EINVAL;
1042         }
1043
1044         if ((sig & mask) != val) {
1045                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
1046                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
1047                 return -ENODEV;
1048         }
1049
1050         return 0;
1051 }
1052
1053 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1054 {
1055         struct niu_link_config *lp = &np->link_config;
1056         int link_up;
1057         u64 val;
1058         u16 current_speed;
1059         unsigned long flags;
1060         u8 current_duplex;
1061
1062         link_up = 0;
1063         current_speed = SPEED_INVALID;
1064         current_duplex = DUPLEX_INVALID;
1065
1066         spin_lock_irqsave(&np->lock, flags);
1067
1068         val = nr64_pcs(PCS_MII_STAT);
1069
1070         if (val & PCS_MII_STAT_LINK_STATUS) {
1071                 link_up = 1;
1072                 current_speed = SPEED_1000;
1073                 current_duplex = DUPLEX_FULL;
1074         }
1075
1076         lp->active_speed = current_speed;
1077         lp->active_duplex = current_duplex;
1078         spin_unlock_irqrestore(&np->lock, flags);
1079
1080         *link_up_p = link_up;
1081         return 0;
1082 }
1083
1084 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1085 {
1086         unsigned long flags;
1087         struct niu_link_config *lp = &np->link_config;
1088         int link_up = 0;
1089         int link_ok = 1;
1090         u64 val, val2;
1091         u16 current_speed;
1092         u8 current_duplex;
1093
1094         if (!(np->flags & NIU_FLAGS_10G))
1095                 return link_status_1g_serdes(np, link_up_p);
1096
1097         current_speed = SPEED_INVALID;
1098         current_duplex = DUPLEX_INVALID;
1099         spin_lock_irqsave(&np->lock, flags);
1100
1101         val = nr64_xpcs(XPCS_STATUS(0));
1102         val2 = nr64_mac(XMAC_INTER2);
1103         if (val2 & 0x01000000)
1104                 link_ok = 0;
1105
1106         if ((val & 0x1000ULL) && link_ok) {
1107                 link_up = 1;
1108                 current_speed = SPEED_10000;
1109                 current_duplex = DUPLEX_FULL;
1110         }
1111         lp->active_speed = current_speed;
1112         lp->active_duplex = current_duplex;
1113         spin_unlock_irqrestore(&np->lock, flags);
1114         *link_up_p = link_up;
1115         return 0;
1116 }
1117
1118 static int link_status_mii(struct niu *np, int *link_up_p)
1119 {
1120         struct niu_link_config *lp = &np->link_config;
1121         int err;
1122         int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1123         int supported, advertising, active_speed, active_duplex;
1124
1125         err = mii_read(np, np->phy_addr, MII_BMCR);
1126         if (unlikely(err < 0))
1127                 return err;
1128         bmcr = err;
1129
1130         err = mii_read(np, np->phy_addr, MII_BMSR);
1131         if (unlikely(err < 0))
1132                 return err;
1133         bmsr = err;
1134
1135         err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1136         if (unlikely(err < 0))
1137                 return err;
1138         advert = err;
1139
1140         err = mii_read(np, np->phy_addr, MII_LPA);
1141         if (unlikely(err < 0))
1142                 return err;
1143         lpa = err;
1144
1145         if (likely(bmsr & BMSR_ESTATEN)) {
1146                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1147                 if (unlikely(err < 0))
1148                         return err;
1149                 estatus = err;
1150
1151                 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1152                 if (unlikely(err < 0))
1153                         return err;
1154                 ctrl1000 = err;
1155
1156                 err = mii_read(np, np->phy_addr, MII_STAT1000);
1157                 if (unlikely(err < 0))
1158                         return err;
1159                 stat1000 = err;
1160         } else
1161                 estatus = ctrl1000 = stat1000 = 0;
1162
1163         supported = 0;
1164         if (bmsr & BMSR_ANEGCAPABLE)
1165                 supported |= SUPPORTED_Autoneg;
1166         if (bmsr & BMSR_10HALF)
1167                 supported |= SUPPORTED_10baseT_Half;
1168         if (bmsr & BMSR_10FULL)
1169                 supported |= SUPPORTED_10baseT_Full;
1170         if (bmsr & BMSR_100HALF)
1171                 supported |= SUPPORTED_100baseT_Half;
1172         if (bmsr & BMSR_100FULL)
1173                 supported |= SUPPORTED_100baseT_Full;
1174         if (estatus & ESTATUS_1000_THALF)
1175                 supported |= SUPPORTED_1000baseT_Half;
1176         if (estatus & ESTATUS_1000_TFULL)
1177                 supported |= SUPPORTED_1000baseT_Full;
1178         lp->supported = supported;
1179
1180         advertising = 0;
1181         if (advert & ADVERTISE_10HALF)
1182                 advertising |= ADVERTISED_10baseT_Half;
1183         if (advert & ADVERTISE_10FULL)
1184                 advertising |= ADVERTISED_10baseT_Full;
1185         if (advert & ADVERTISE_100HALF)
1186                 advertising |= ADVERTISED_100baseT_Half;
1187         if (advert & ADVERTISE_100FULL)
1188                 advertising |= ADVERTISED_100baseT_Full;
1189         if (ctrl1000 & ADVERTISE_1000HALF)
1190                 advertising |= ADVERTISED_1000baseT_Half;
1191         if (ctrl1000 & ADVERTISE_1000FULL)
1192                 advertising |= ADVERTISED_1000baseT_Full;
1193
1194         if (bmcr & BMCR_ANENABLE) {
1195                 int neg, neg1000;
1196
1197                 lp->active_autoneg = 1;
1198                 advertising |= ADVERTISED_Autoneg;
1199
1200                 neg = advert & lpa;
1201                 neg1000 = (ctrl1000 << 2) & stat1000;
1202
1203                 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1204                         active_speed = SPEED_1000;
1205                 else if (neg & LPA_100)
1206                         active_speed = SPEED_100;
1207                 else if (neg & (LPA_10HALF | LPA_10FULL))
1208                         active_speed = SPEED_10;
1209                 else
1210                         active_speed = SPEED_INVALID;
1211
1212                 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1213                         active_duplex = DUPLEX_FULL;
1214                 else if (active_speed != SPEED_INVALID)
1215                         active_duplex = DUPLEX_HALF;
1216                 else
1217                         active_duplex = DUPLEX_INVALID;
1218         } else {
1219                 lp->active_autoneg = 0;
1220
1221                 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1222                         active_speed = SPEED_1000;
1223                 else if (bmcr & BMCR_SPEED100)
1224                         active_speed = SPEED_100;
1225                 else
1226                         active_speed = SPEED_10;
1227
1228                 if (bmcr & BMCR_FULLDPLX)
1229                         active_duplex = DUPLEX_FULL;
1230                 else
1231                         active_duplex = DUPLEX_HALF;
1232         }
1233
1234         lp->active_advertising = advertising;
1235         lp->active_speed = active_speed;
1236         lp->active_duplex = active_duplex;
1237         *link_up_p = !!(bmsr & BMSR_LSTATUS);
1238
1239         return 0;
1240 }
1241
1242 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1243 {
1244         struct niu_link_config *lp = &np->link_config;
1245         u16 current_speed, bmsr;
1246         unsigned long flags;
1247         u8 current_duplex;
1248         int err, link_up;
1249
1250         link_up = 0;
1251         current_speed = SPEED_INVALID;
1252         current_duplex = DUPLEX_INVALID;
1253
1254         spin_lock_irqsave(&np->lock, flags);
1255
1256         err = -EINVAL;
1257
1258         err = mii_read(np, np->phy_addr, MII_BMSR);
1259         if (err < 0)
1260                 goto out;
1261
1262         bmsr = err;
1263         if (bmsr & BMSR_LSTATUS) {
1264                 u16 adv, lpa, common, estat;
1265
1266                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1267                 if (err < 0)
1268                         goto out;
1269                 adv = err;
1270
1271                 err = mii_read(np, np->phy_addr, MII_LPA);
1272                 if (err < 0)
1273                         goto out;
1274                 lpa = err;
1275
1276                 common = adv & lpa;
1277
1278                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1279                 if (err < 0)
1280                         goto out;
1281                 estat = err;
1282                 link_up = 1;
1283                 current_speed = SPEED_1000;
1284                 current_duplex = DUPLEX_FULL;
1285
1286         }
1287         lp->active_speed = current_speed;
1288         lp->active_duplex = current_duplex;
1289         err = 0;
1290
1291 out:
1292         spin_unlock_irqrestore(&np->lock, flags);
1293
1294         *link_up_p = link_up;
1295         return err;
1296 }
1297
1298 static int link_status_1g(struct niu *np, int *link_up_p)
1299 {
1300         struct niu_link_config *lp = &np->link_config;
1301         unsigned long flags;
1302         int err;
1303
1304         spin_lock_irqsave(&np->lock, flags);
1305
1306         err = link_status_mii(np, link_up_p);
1307         lp->supported |= SUPPORTED_TP;
1308         lp->active_advertising |= ADVERTISED_TP;
1309
1310         spin_unlock_irqrestore(&np->lock, flags);
1311         return err;
1312 }
1313
1314 static int bcm8704_reset(struct niu *np)
1315 {
1316         int err, limit;
1317
1318         err = mdio_read(np, np->phy_addr,
1319                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1320         if (err < 0)
1321                 return err;
1322         err |= BMCR_RESET;
1323         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1324                          MII_BMCR, err);
1325         if (err)
1326                 return err;
1327
1328         limit = 1000;
1329         while (--limit >= 0) {
1330                 err = mdio_read(np, np->phy_addr,
1331                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1332                 if (err < 0)
1333                         return err;
1334                 if (!(err & BMCR_RESET))
1335                         break;
1336         }
1337         if (limit < 0) {
1338                 dev_err(np->device, PFX "Port %u PHY will not reset "
1339                         "(bmcr=%04x)\n", np->port, (err & 0xffff));
1340                 return -ENODEV;
1341         }
1342         return 0;
1343 }
1344
1345 /* When written, certain PHY registers need to be read back twice
1346  * in order for the bits to settle properly.
1347  */
1348 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1349 {
1350         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1351         if (err < 0)
1352                 return err;
1353         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1354         if (err < 0)
1355                 return err;
1356         return 0;
1357 }
1358
1359 static int bcm8706_init_user_dev3(struct niu *np)
1360 {
1361         int err;
1362
1363
1364         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1365                         BCM8704_USER_OPT_DIGITAL_CTRL);
1366         if (err < 0)
1367                 return err;
1368         err &= ~USER_ODIG_CTRL_GPIOS;
1369         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1370         err |=  USER_ODIG_CTRL_RESV2;
1371         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1372                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1373         if (err)
1374                 return err;
1375
1376         mdelay(1000);
1377
1378         return 0;
1379 }
1380
1381 static int bcm8704_init_user_dev3(struct niu *np)
1382 {
1383         int err;
1384
1385         err = mdio_write(np, np->phy_addr,
1386                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1387                          (USER_CONTROL_OPTXRST_LVL |
1388                           USER_CONTROL_OPBIASFLT_LVL |
1389                           USER_CONTROL_OBTMPFLT_LVL |
1390                           USER_CONTROL_OPPRFLT_LVL |
1391                           USER_CONTROL_OPTXFLT_LVL |
1392                           USER_CONTROL_OPRXLOS_LVL |
1393                           USER_CONTROL_OPRXFLT_LVL |
1394                           USER_CONTROL_OPTXON_LVL |
1395                           (0x3f << USER_CONTROL_RES1_SHIFT)));
1396         if (err)
1397                 return err;
1398
1399         err = mdio_write(np, np->phy_addr,
1400                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1401                          (USER_PMD_TX_CTL_XFP_CLKEN |
1402                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1403                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1404                           USER_PMD_TX_CTL_TSCK_LPWREN));
1405         if (err)
1406                 return err;
1407
1408         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1409         if (err)
1410                 return err;
1411         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1412         if (err)
1413                 return err;
1414
1415         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1416                         BCM8704_USER_OPT_DIGITAL_CTRL);
1417         if (err < 0)
1418                 return err;
1419         err &= ~USER_ODIG_CTRL_GPIOS;
1420         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1421         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1422                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1423         if (err)
1424                 return err;
1425
1426         mdelay(1000);
1427
1428         return 0;
1429 }
1430
1431 static int mrvl88x2011_act_led(struct niu *np, int val)
1432 {
1433         int     err;
1434
1435         err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1436                 MRVL88X2011_LED_8_TO_11_CTL);
1437         if (err < 0)
1438                 return err;
1439
1440         err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1441         err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1442
1443         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1444                           MRVL88X2011_LED_8_TO_11_CTL, err);
1445 }
1446
1447 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1448 {
1449         int     err;
1450
1451         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1452                         MRVL88X2011_LED_BLINK_CTL);
1453         if (err >= 0) {
1454                 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1455                 err |= (rate << 4);
1456
1457                 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1458                                  MRVL88X2011_LED_BLINK_CTL, err);
1459         }
1460
1461         return err;
1462 }
1463
1464 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1465 {
1466         int     err;
1467
1468         /* Set LED functions */
1469         err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1470         if (err)
1471                 return err;
1472
1473         /* led activity */
1474         err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1475         if (err)
1476                 return err;
1477
1478         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1479                         MRVL88X2011_GENERAL_CTL);
1480         if (err < 0)
1481                 return err;
1482
1483         err |= MRVL88X2011_ENA_XFPREFCLK;
1484
1485         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1486                          MRVL88X2011_GENERAL_CTL, err);
1487         if (err < 0)
1488                 return err;
1489
1490         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1491                         MRVL88X2011_PMA_PMD_CTL_1);
1492         if (err < 0)
1493                 return err;
1494
1495         if (np->link_config.loopback_mode == LOOPBACK_MAC)
1496                 err |= MRVL88X2011_LOOPBACK;
1497         else
1498                 err &= ~MRVL88X2011_LOOPBACK;
1499
1500         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1501                          MRVL88X2011_PMA_PMD_CTL_1, err);
1502         if (err < 0)
1503                 return err;
1504
1505         /* Enable PMD  */
1506         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1507                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1508 }
1509
1510
1511 static int xcvr_diag_bcm870x(struct niu *np)
1512 {
1513         u16 analog_stat0, tx_alarm_status;
1514         int err = 0;
1515
1516 #if 1
1517         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1518                         MII_STAT1000);
1519         if (err < 0)
1520                 return err;
1521         pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
1522                 np->port, err);
1523
1524         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1525         if (err < 0)
1526                 return err;
1527         pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
1528                 np->port, err);
1529
1530         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1531                         MII_NWAYTEST);
1532         if (err < 0)
1533                 return err;
1534         pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
1535                 np->port, err);
1536 #endif
1537
1538         /* XXX dig this out it might not be so useful XXX */
1539         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1540                         BCM8704_USER_ANALOG_STATUS0);
1541         if (err < 0)
1542                 return err;
1543         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1544                         BCM8704_USER_ANALOG_STATUS0);
1545         if (err < 0)
1546                 return err;
1547         analog_stat0 = err;
1548
1549         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1550                         BCM8704_USER_TX_ALARM_STATUS);
1551         if (err < 0)
1552                 return err;
1553         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1554                         BCM8704_USER_TX_ALARM_STATUS);
1555         if (err < 0)
1556                 return err;
1557         tx_alarm_status = err;
1558
1559         if (analog_stat0 != 0x03fc) {
1560                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1561                         pr_info(PFX "Port %u cable not connected "
1562                                 "or bad cable.\n", np->port);
1563                 } else if (analog_stat0 == 0x639c) {
1564                         pr_info(PFX "Port %u optical module is bad "
1565                                 "or missing.\n", np->port);
1566                 }
1567         }
1568
1569         return 0;
1570 }
1571
1572 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1573 {
1574         struct niu_link_config *lp = &np->link_config;
1575         int err;
1576
1577         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1578                         MII_BMCR);
1579         if (err < 0)
1580                 return err;
1581
1582         err &= ~BMCR_LOOPBACK;
1583
1584         if (lp->loopback_mode == LOOPBACK_MAC)
1585                 err |= BMCR_LOOPBACK;
1586
1587         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1588                          MII_BMCR, err);
1589         if (err)
1590                 return err;
1591
1592         return 0;
1593 }
1594
1595 static int xcvr_init_10g_bcm8706(struct niu *np)
1596 {
1597         int err = 0;
1598         u64 val;
1599
1600         if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1601             (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1602                         return err;
1603
1604         val = nr64_mac(XMAC_CONFIG);
1605         val &= ~XMAC_CONFIG_LED_POLARITY;
1606         val |= XMAC_CONFIG_FORCE_LED_ON;
1607         nw64_mac(XMAC_CONFIG, val);
1608
1609         val = nr64(MIF_CONFIG);
1610         val |= MIF_CONFIG_INDIRECT_MODE;
1611         nw64(MIF_CONFIG, val);
1612
1613         err = bcm8704_reset(np);
1614         if (err)
1615                 return err;
1616
1617         err = xcvr_10g_set_lb_bcm870x(np);
1618         if (err)
1619                 return err;
1620
1621         err = bcm8706_init_user_dev3(np);
1622         if (err)
1623                 return err;
1624
1625         err = xcvr_diag_bcm870x(np);
1626         if (err)
1627                 return err;
1628
1629         return 0;
1630 }
1631
1632 static int xcvr_init_10g_bcm8704(struct niu *np)
1633 {
1634         int err;
1635
1636         err = bcm8704_reset(np);
1637         if (err)
1638                 return err;
1639
1640         err = bcm8704_init_user_dev3(np);
1641         if (err)
1642                 return err;
1643
1644         err = xcvr_10g_set_lb_bcm870x(np);
1645         if (err)
1646                 return err;
1647
1648         err =  xcvr_diag_bcm870x(np);
1649         if (err)
1650                 return err;
1651
1652         return 0;
1653 }
1654
1655 static int xcvr_init_10g(struct niu *np)
1656 {
1657         int phy_id, err;
1658         u64 val;
1659
1660         val = nr64_mac(XMAC_CONFIG);
1661         val &= ~XMAC_CONFIG_LED_POLARITY;
1662         val |= XMAC_CONFIG_FORCE_LED_ON;
1663         nw64_mac(XMAC_CONFIG, val);
1664
1665         /* XXX shared resource, lock parent XXX */
1666         val = nr64(MIF_CONFIG);
1667         val |= MIF_CONFIG_INDIRECT_MODE;
1668         nw64(MIF_CONFIG, val);
1669
1670         phy_id = phy_decode(np->parent->port_phy, np->port);
1671         phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1672
1673         /* handle different phy types */
1674         switch (phy_id & NIU_PHY_ID_MASK) {
1675         case NIU_PHY_ID_MRVL88X2011:
1676                 err = xcvr_init_10g_mrvl88x2011(np);
1677                 break;
1678
1679         default: /* bcom 8704 */
1680                 err = xcvr_init_10g_bcm8704(np);
1681                 break;
1682         }
1683
1684         return 0;
1685 }
1686
1687 static int mii_reset(struct niu *np)
1688 {
1689         int limit, err;
1690
1691         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1692         if (err)
1693                 return err;
1694
1695         limit = 1000;
1696         while (--limit >= 0) {
1697                 udelay(500);
1698                 err = mii_read(np, np->phy_addr, MII_BMCR);
1699                 if (err < 0)
1700                         return err;
1701                 if (!(err & BMCR_RESET))
1702                         break;
1703         }
1704         if (limit < 0) {
1705                 dev_err(np->device, PFX "Port %u MII would not reset, "
1706                         "bmcr[%04x]\n", np->port, err);
1707                 return -ENODEV;
1708         }
1709
1710         return 0;
1711 }
1712
1713 static int xcvr_init_1g_rgmii(struct niu *np)
1714 {
1715         int err;
1716         u64 val;
1717         u16 bmcr, bmsr, estat;
1718
1719         val = nr64(MIF_CONFIG);
1720         val &= ~MIF_CONFIG_INDIRECT_MODE;
1721         nw64(MIF_CONFIG, val);
1722
1723         err = mii_reset(np);
1724         if (err)
1725                 return err;
1726
1727         err = mii_read(np, np->phy_addr, MII_BMSR);
1728         if (err < 0)
1729                 return err;
1730         bmsr = err;
1731
1732         estat = 0;
1733         if (bmsr & BMSR_ESTATEN) {
1734                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1735                 if (err < 0)
1736                         return err;
1737                 estat = err;
1738         }
1739
1740         bmcr = 0;
1741         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1742         if (err)
1743                 return err;
1744
1745         if (bmsr & BMSR_ESTATEN) {
1746                 u16 ctrl1000 = 0;
1747
1748                 if (estat & ESTATUS_1000_TFULL)
1749                         ctrl1000 |= ADVERTISE_1000FULL;
1750                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1751                 if (err)
1752                         return err;
1753         }
1754
1755         bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1756
1757         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1758         if (err)
1759                 return err;
1760
1761         err = mii_read(np, np->phy_addr, MII_BMCR);
1762         if (err < 0)
1763                 return err;
1764         bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1765
1766         err = mii_read(np, np->phy_addr, MII_BMSR);
1767         if (err < 0)
1768                 return err;
1769
1770         return 0;
1771 }
1772
1773 static int mii_init_common(struct niu *np)
1774 {
1775         struct niu_link_config *lp = &np->link_config;
1776         u16 bmcr, bmsr, adv, estat;
1777         int err;
1778
1779         err = mii_reset(np);
1780         if (err)
1781                 return err;
1782
1783         err = mii_read(np, np->phy_addr, MII_BMSR);
1784         if (err < 0)
1785                 return err;
1786         bmsr = err;
1787
1788         estat = 0;
1789         if (bmsr & BMSR_ESTATEN) {
1790                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1791                 if (err < 0)
1792                         return err;
1793                 estat = err;
1794         }
1795
1796         bmcr = 0;
1797         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1798         if (err)
1799                 return err;
1800
1801         if (lp->loopback_mode == LOOPBACK_MAC) {
1802                 bmcr |= BMCR_LOOPBACK;
1803                 if (lp->active_speed == SPEED_1000)
1804                         bmcr |= BMCR_SPEED1000;
1805                 if (lp->active_duplex == DUPLEX_FULL)
1806                         bmcr |= BMCR_FULLDPLX;
1807         }
1808
1809         if (lp->loopback_mode == LOOPBACK_PHY) {
1810                 u16 aux;
1811
1812                 aux = (BCM5464R_AUX_CTL_EXT_LB |
1813                        BCM5464R_AUX_CTL_WRITE_1);
1814                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1815                 if (err)
1816                         return err;
1817         }
1818
1819         if (lp->autoneg) {
1820                 u16 ctrl1000;
1821
1822                 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1823                 if ((bmsr & BMSR_10HALF) &&
1824                         (lp->advertising & ADVERTISED_10baseT_Half))
1825                         adv |= ADVERTISE_10HALF;
1826                 if ((bmsr & BMSR_10FULL) &&
1827                         (lp->advertising & ADVERTISED_10baseT_Full))
1828                         adv |= ADVERTISE_10FULL;
1829                 if ((bmsr & BMSR_100HALF) &&
1830                         (lp->advertising & ADVERTISED_100baseT_Half))
1831                         adv |= ADVERTISE_100HALF;
1832                 if ((bmsr & BMSR_100FULL) &&
1833                         (lp->advertising & ADVERTISED_100baseT_Full))
1834                         adv |= ADVERTISE_100FULL;
1835                 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1836                 if (err)
1837                         return err;
1838
1839                 if (likely(bmsr & BMSR_ESTATEN)) {
1840                         ctrl1000 = 0;
1841                         if ((estat & ESTATUS_1000_THALF) &&
1842                                 (lp->advertising & ADVERTISED_1000baseT_Half))
1843                                 ctrl1000 |= ADVERTISE_1000HALF;
1844                         if ((estat & ESTATUS_1000_TFULL) &&
1845                                 (lp->advertising & ADVERTISED_1000baseT_Full))
1846                                 ctrl1000 |= ADVERTISE_1000FULL;
1847                         err = mii_write(np, np->phy_addr,
1848                                         MII_CTRL1000, ctrl1000);
1849                         if (err)
1850                                 return err;
1851                 }
1852
1853                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1854         } else {
1855                 /* !lp->autoneg */
1856                 int fulldpx;
1857
1858                 if (lp->duplex == DUPLEX_FULL) {
1859                         bmcr |= BMCR_FULLDPLX;
1860                         fulldpx = 1;
1861                 } else if (lp->duplex == DUPLEX_HALF)
1862                         fulldpx = 0;
1863                 else
1864                         return -EINVAL;
1865
1866                 if (lp->speed == SPEED_1000) {
1867                         /* if X-full requested while not supported, or
1868                            X-half requested while not supported... */
1869                         if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1870                                 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1871                                 return -EINVAL;
1872                         bmcr |= BMCR_SPEED1000;
1873                 } else if (lp->speed == SPEED_100) {
1874                         if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1875                                 (!fulldpx && !(bmsr & BMSR_100HALF)))
1876                                 return -EINVAL;
1877                         bmcr |= BMCR_SPEED100;
1878                 } else if (lp->speed == SPEED_10) {
1879                         if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1880                                 (!fulldpx && !(bmsr & BMSR_10HALF)))
1881                                 return -EINVAL;
1882                 } else
1883                         return -EINVAL;
1884         }
1885
1886         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1887         if (err)
1888                 return err;
1889
1890 #if 0
1891         err = mii_read(np, np->phy_addr, MII_BMCR);
1892         if (err < 0)
1893                 return err;
1894         bmcr = err;
1895
1896         err = mii_read(np, np->phy_addr, MII_BMSR);
1897         if (err < 0)
1898                 return err;
1899         bmsr = err;
1900
1901         pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1902                 np->port, bmcr, bmsr);
1903 #endif
1904
1905         return 0;
1906 }
1907
1908 static int xcvr_init_1g(struct niu *np)
1909 {
1910         u64 val;
1911
1912         /* XXX shared resource, lock parent XXX */
1913         val = nr64(MIF_CONFIG);
1914         val &= ~MIF_CONFIG_INDIRECT_MODE;
1915         nw64(MIF_CONFIG, val);
1916
1917         return mii_init_common(np);
1918 }
1919
1920 static int niu_xcvr_init(struct niu *np)
1921 {
1922         const struct niu_phy_ops *ops = np->phy_ops;
1923         int err;
1924
1925         err = 0;
1926         if (ops->xcvr_init)
1927                 err = ops->xcvr_init(np);
1928
1929         return err;
1930 }
1931
1932 static int niu_serdes_init(struct niu *np)
1933 {
1934         const struct niu_phy_ops *ops = np->phy_ops;
1935         int err;
1936
1937         err = 0;
1938         if (ops->serdes_init)
1939                 err = ops->serdes_init(np);
1940
1941         return err;
1942 }
1943
1944 static void niu_init_xif(struct niu *);
1945 static void niu_handle_led(struct niu *, int status);
1946
1947 static int niu_link_status_common(struct niu *np, int link_up)
1948 {
1949         struct niu_link_config *lp = &np->link_config;
1950         struct net_device *dev = np->dev;
1951         unsigned long flags;
1952
1953         if (!netif_carrier_ok(dev) && link_up) {
1954                 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1955                        dev->name,
1956                        (lp->active_speed == SPEED_10000 ?
1957                         "10Gb/sec" :
1958                         (lp->active_speed == SPEED_1000 ?
1959                          "1Gb/sec" :
1960                          (lp->active_speed == SPEED_100 ?
1961                           "100Mbit/sec" : "10Mbit/sec"))),
1962                        (lp->active_duplex == DUPLEX_FULL ?
1963                         "full" : "half"));
1964
1965                 spin_lock_irqsave(&np->lock, flags);
1966                 niu_init_xif(np);
1967                 niu_handle_led(np, 1);
1968                 spin_unlock_irqrestore(&np->lock, flags);
1969
1970                 netif_carrier_on(dev);
1971         } else if (netif_carrier_ok(dev) && !link_up) {
1972                 niuwarn(LINK, "%s: Link is down\n", dev->name);
1973                 spin_lock_irqsave(&np->lock, flags);
1974                 niu_handle_led(np, 0);
1975                 spin_unlock_irqrestore(&np->lock, flags);
1976                 netif_carrier_off(dev);
1977         }
1978
1979         return 0;
1980 }
1981
1982 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1983 {
1984         int err, link_up, pma_status, pcs_status;
1985
1986         link_up = 0;
1987
1988         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1989                         MRVL88X2011_10G_PMD_STATUS_2);
1990         if (err < 0)
1991                 goto out;
1992
1993         /* Check PMA/PMD Register: 1.0001.2 == 1 */
1994         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1995                         MRVL88X2011_PMA_PMD_STATUS_1);
1996         if (err < 0)
1997                 goto out;
1998
1999         pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
2000
2001         /* Check PMC Register : 3.0001.2 == 1: read twice */
2002         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
2003                         MRVL88X2011_PMA_PMD_STATUS_1);
2004         if (err < 0)
2005                 goto out;
2006
2007         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
2008                         MRVL88X2011_PMA_PMD_STATUS_1);
2009         if (err < 0)
2010                 goto out;
2011
2012         pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
2013
2014         /* Check XGXS Register : 4.0018.[0-3,12] */
2015         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
2016                         MRVL88X2011_10G_XGXS_LANE_STAT);
2017         if (err < 0)
2018                 goto out;
2019
2020         if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
2021                     PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
2022                     PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
2023                     0x800))
2024                 link_up = (pma_status && pcs_status) ? 1 : 0;
2025
2026         np->link_config.active_speed = SPEED_10000;
2027         np->link_config.active_duplex = DUPLEX_FULL;
2028         err = 0;
2029 out:
2030         mrvl88x2011_act_led(np, (link_up ?
2031                                  MRVL88X2011_LED_CTL_PCS_ACT :
2032                                  MRVL88X2011_LED_CTL_OFF));
2033
2034         *link_up_p = link_up;
2035         return err;
2036 }
2037
2038 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
2039 {
2040         int err, link_up;
2041         link_up = 0;
2042
2043         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2044                         BCM8704_PMD_RCV_SIGDET);
2045         if (err < 0)
2046                 goto out;
2047         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2048                 err = 0;
2049                 goto out;
2050         }
2051
2052         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2053                         BCM8704_PCS_10G_R_STATUS);
2054         if (err < 0)
2055                 goto out;
2056
2057         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2058                 err = 0;
2059                 goto out;
2060         }
2061
2062         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2063                         BCM8704_PHYXS_XGXS_LANE_STAT);
2064         if (err < 0)
2065                 goto out;
2066         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2067                     PHYXS_XGXS_LANE_STAT_MAGIC |
2068                     PHYXS_XGXS_LANE_STAT_PATTEST |
2069                     PHYXS_XGXS_LANE_STAT_LANE3 |
2070                     PHYXS_XGXS_LANE_STAT_LANE2 |
2071                     PHYXS_XGXS_LANE_STAT_LANE1 |
2072                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2073                 err = 0;
2074                 np->link_config.active_speed = SPEED_INVALID;
2075                 np->link_config.active_duplex = DUPLEX_INVALID;
2076                 goto out;
2077         }
2078
2079         link_up = 1;
2080         np->link_config.active_speed = SPEED_10000;
2081         np->link_config.active_duplex = DUPLEX_FULL;
2082         err = 0;
2083
2084 out:
2085         *link_up_p = link_up;
2086         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
2087                 err = 0;
2088         return err;
2089 }
2090
2091 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2092 {
2093         int err, link_up;
2094
2095         link_up = 0;
2096
2097         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2098                         BCM8704_PMD_RCV_SIGDET);
2099         if (err < 0)
2100                 goto out;
2101         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2102                 err = 0;
2103                 goto out;
2104         }
2105
2106         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2107                         BCM8704_PCS_10G_R_STATUS);
2108         if (err < 0)
2109                 goto out;
2110         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2111                 err = 0;
2112                 goto out;
2113         }
2114
2115         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2116                         BCM8704_PHYXS_XGXS_LANE_STAT);
2117         if (err < 0)
2118                 goto out;
2119
2120         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2121                     PHYXS_XGXS_LANE_STAT_MAGIC |
2122                     PHYXS_XGXS_LANE_STAT_LANE3 |
2123                     PHYXS_XGXS_LANE_STAT_LANE2 |
2124                     PHYXS_XGXS_LANE_STAT_LANE1 |
2125                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2126                 err = 0;
2127                 goto out;
2128         }
2129
2130         link_up = 1;
2131         np->link_config.active_speed = SPEED_10000;
2132         np->link_config.active_duplex = DUPLEX_FULL;
2133         err = 0;
2134
2135 out:
2136         *link_up_p = link_up;
2137         return err;
2138 }
2139
2140 static int link_status_10g(struct niu *np, int *link_up_p)
2141 {
2142         unsigned long flags;
2143         int err = -EINVAL;
2144
2145         spin_lock_irqsave(&np->lock, flags);
2146
2147         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2148                 int phy_id;
2149
2150                 phy_id = phy_decode(np->parent->port_phy, np->port);
2151                 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2152
2153                 /* handle different phy types */
2154                 switch (phy_id & NIU_PHY_ID_MASK) {
2155                 case NIU_PHY_ID_MRVL88X2011:
2156                         err = link_status_10g_mrvl(np, link_up_p);
2157                         break;
2158
2159                 default: /* bcom 8704 */
2160                         err = link_status_10g_bcom(np, link_up_p);
2161                         break;
2162                 }
2163         }
2164
2165         spin_unlock_irqrestore(&np->lock, flags);
2166
2167         return err;
2168 }
2169
2170 static int niu_10g_phy_present(struct niu *np)
2171 {
2172         u64 sig, mask, val;
2173
2174         sig = nr64(ESR_INT_SIGNALS);
2175         switch (np->port) {
2176         case 0:
2177                 mask = ESR_INT_SIGNALS_P0_BITS;
2178                 val = (ESR_INT_SRDY0_P0 |
2179                        ESR_INT_DET0_P0 |
2180                        ESR_INT_XSRDY_P0 |
2181                        ESR_INT_XDP_P0_CH3 |
2182                        ESR_INT_XDP_P0_CH2 |
2183                        ESR_INT_XDP_P0_CH1 |
2184                        ESR_INT_XDP_P0_CH0);
2185                 break;
2186
2187         case 1:
2188                 mask = ESR_INT_SIGNALS_P1_BITS;
2189                 val = (ESR_INT_SRDY0_P1 |
2190                        ESR_INT_DET0_P1 |
2191                        ESR_INT_XSRDY_P1 |
2192                        ESR_INT_XDP_P1_CH3 |
2193                        ESR_INT_XDP_P1_CH2 |
2194                        ESR_INT_XDP_P1_CH1 |
2195                        ESR_INT_XDP_P1_CH0);
2196                 break;
2197
2198         default:
2199                 return 0;
2200         }
2201
2202         if ((sig & mask) != val)
2203                 return 0;
2204         return 1;
2205 }
2206
2207 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2208 {
2209         unsigned long flags;
2210         int err = 0;
2211         int phy_present;
2212         int phy_present_prev;
2213
2214         spin_lock_irqsave(&np->lock, flags);
2215
2216         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2217                 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2218                         1 : 0;
2219                 phy_present = niu_10g_phy_present(np);
2220                 if (phy_present != phy_present_prev) {
2221                         /* state change */
2222                         if (phy_present) {
2223                                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2224                                 if (np->phy_ops->xcvr_init)
2225                                         err = np->phy_ops->xcvr_init(np);
2226                                 if (err) {
2227                                         /* debounce */
2228                                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2229                                 }
2230                         } else {
2231                                 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2232                                 *link_up_p = 0;
2233                                 niuwarn(LINK, "%s: Hotplug PHY Removed\n",
2234                                         np->dev->name);
2235                         }
2236                 }
2237                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT)
2238                         err = link_status_10g_bcm8706(np, link_up_p);
2239         }
2240
2241         spin_unlock_irqrestore(&np->lock, flags);
2242
2243         return err;
2244 }
2245
2246 static int niu_link_status(struct niu *np, int *link_up_p)
2247 {
2248         const struct niu_phy_ops *ops = np->phy_ops;
2249         int err;
2250
2251         err = 0;
2252         if (ops->link_status)
2253                 err = ops->link_status(np, link_up_p);
2254
2255         return err;
2256 }
2257
2258 static void niu_timer(unsigned long __opaque)
2259 {
2260         struct niu *np = (struct niu *) __opaque;
2261         unsigned long off;
2262         int err, link_up;
2263
2264         err = niu_link_status(np, &link_up);
2265         if (!err)
2266                 niu_link_status_common(np, link_up);
2267
2268         if (netif_carrier_ok(np->dev))
2269                 off = 5 * HZ;
2270         else
2271                 off = 1 * HZ;
2272         np->timer.expires = jiffies + off;
2273
2274         add_timer(&np->timer);
2275 }
2276
2277 static const struct niu_phy_ops phy_ops_10g_serdes = {
2278         .serdes_init            = serdes_init_10g_serdes,
2279         .link_status            = link_status_10g_serdes,
2280 };
2281
2282 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2283         .serdes_init            = serdes_init_niu_10g_serdes,
2284         .link_status            = link_status_10g_serdes,
2285 };
2286
2287 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2288         .serdes_init            = serdes_init_niu_1g_serdes,
2289         .link_status            = link_status_1g_serdes,
2290 };
2291
2292 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2293         .xcvr_init              = xcvr_init_1g_rgmii,
2294         .link_status            = link_status_1g_rgmii,
2295 };
2296
2297 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2298         .serdes_init            = serdes_init_niu_10g_fiber,
2299         .xcvr_init              = xcvr_init_10g,
2300         .link_status            = link_status_10g,
2301 };
2302
2303 static const struct niu_phy_ops phy_ops_10g_fiber = {
2304         .serdes_init            = serdes_init_10g,
2305         .xcvr_init              = xcvr_init_10g,
2306         .link_status            = link_status_10g,
2307 };
2308
2309 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2310         .serdes_init            = serdes_init_10g,
2311         .xcvr_init              = xcvr_init_10g_bcm8706,
2312         .link_status            = link_status_10g_hotplug,
2313 };
2314
2315 static const struct niu_phy_ops phy_ops_10g_copper = {
2316         .serdes_init            = serdes_init_10g,
2317         .link_status            = link_status_10g, /* XXX */
2318 };
2319
2320 static const struct niu_phy_ops phy_ops_1g_fiber = {
2321         .serdes_init            = serdes_init_1g,
2322         .xcvr_init              = xcvr_init_1g,
2323         .link_status            = link_status_1g,
2324 };
2325
2326 static const struct niu_phy_ops phy_ops_1g_copper = {
2327         .xcvr_init              = xcvr_init_1g,
2328         .link_status            = link_status_1g,
2329 };
2330
2331 struct niu_phy_template {
2332         const struct niu_phy_ops        *ops;
2333         u32                             phy_addr_base;
2334 };
2335
2336 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2337         .ops            = &phy_ops_10g_fiber_niu,
2338         .phy_addr_base  = 16,
2339 };
2340
2341 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2342         .ops            = &phy_ops_10g_serdes_niu,
2343         .phy_addr_base  = 0,
2344 };
2345
2346 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2347         .ops            = &phy_ops_1g_serdes_niu,
2348         .phy_addr_base  = 0,
2349 };
2350
2351 static const struct niu_phy_template phy_template_10g_fiber = {
2352         .ops            = &phy_ops_10g_fiber,
2353         .phy_addr_base  = 8,
2354 };
2355
2356 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2357         .ops            = &phy_ops_10g_fiber_hotplug,
2358         .phy_addr_base  = 8,
2359 };
2360
2361 static const struct niu_phy_template phy_template_10g_copper = {
2362         .ops            = &phy_ops_10g_copper,
2363         .phy_addr_base  = 10,
2364 };
2365
2366 static const struct niu_phy_template phy_template_1g_fiber = {
2367         .ops            = &phy_ops_1g_fiber,
2368         .phy_addr_base  = 0,
2369 };
2370
2371 static const struct niu_phy_template phy_template_1g_copper = {
2372         .ops            = &phy_ops_1g_copper,
2373         .phy_addr_base  = 0,
2374 };
2375
2376 static const struct niu_phy_template phy_template_1g_rgmii = {
2377         .ops            = &phy_ops_1g_rgmii,
2378         .phy_addr_base  = 0,
2379 };
2380
2381 static const struct niu_phy_template phy_template_10g_serdes = {
2382         .ops            = &phy_ops_10g_serdes,
2383         .phy_addr_base  = 0,
2384 };
2385
2386 static int niu_atca_port_num[4] = {
2387         0, 0,  11, 10
2388 };
2389
2390 static int serdes_init_10g_serdes(struct niu *np)
2391 {
2392         struct niu_link_config *lp = &np->link_config;
2393         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2394         u64 ctrl_val, test_cfg_val, sig, mask, val;
2395         u64 reset_val;
2396
2397         switch (np->port) {
2398         case 0:
2399                 reset_val =  ENET_SERDES_RESET_0;
2400                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2401                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2402                 pll_cfg = ENET_SERDES_0_PLL_CFG;
2403                 break;
2404         case 1:
2405                 reset_val =  ENET_SERDES_RESET_1;
2406                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2407                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2408                 pll_cfg = ENET_SERDES_1_PLL_CFG;
2409                 break;
2410
2411         default:
2412                 return -EINVAL;
2413         }
2414         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2415                     ENET_SERDES_CTRL_SDET_1 |
2416                     ENET_SERDES_CTRL_SDET_2 |
2417                     ENET_SERDES_CTRL_SDET_3 |
2418                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2419                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2420                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2421                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2422                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2423                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2424                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2425                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2426         test_cfg_val = 0;
2427
2428         if (lp->loopback_mode == LOOPBACK_PHY) {
2429                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2430                                   ENET_SERDES_TEST_MD_0_SHIFT) |
2431                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2432                                   ENET_SERDES_TEST_MD_1_SHIFT) |
2433                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2434                                   ENET_SERDES_TEST_MD_2_SHIFT) |
2435                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2436                                   ENET_SERDES_TEST_MD_3_SHIFT));
2437         }
2438
2439         esr_reset(np);
2440         nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2441         nw64(ctrl_reg, ctrl_val);
2442         nw64(test_cfg_reg, test_cfg_val);
2443
2444         /* Initialize all 4 lanes of the SERDES.  */
2445         for (i = 0; i < 4; i++) {
2446                 u32 rxtx_ctrl, glue0;
2447                 int err;
2448
2449                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2450                 if (err)
2451                         return err;
2452                 err = esr_read_glue0(np, i, &glue0);
2453                 if (err)
2454                         return err;
2455
2456                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2457                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2458                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2459
2460                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2461                            ESR_GLUE_CTRL0_THCNT |
2462                            ESR_GLUE_CTRL0_BLTIME);
2463                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2464                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2465                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2466                           (BLTIME_300_CYCLES <<
2467                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
2468
2469                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2470                 if (err)
2471                         return err;
2472                 err = esr_write_glue0(np, i, glue0);
2473                 if (err)
2474                         return err;
2475         }
2476
2477
2478         sig = nr64(ESR_INT_SIGNALS);
2479         switch (np->port) {
2480         case 0:
2481                 mask = ESR_INT_SIGNALS_P0_BITS;
2482                 val = (ESR_INT_SRDY0_P0 |
2483                        ESR_INT_DET0_P0 |
2484                        ESR_INT_XSRDY_P0 |
2485                        ESR_INT_XDP_P0_CH3 |
2486                        ESR_INT_XDP_P0_CH2 |
2487                        ESR_INT_XDP_P0_CH1 |
2488                        ESR_INT_XDP_P0_CH0);
2489                 break;
2490
2491         case 1:
2492                 mask = ESR_INT_SIGNALS_P1_BITS;
2493                 val = (ESR_INT_SRDY0_P1 |
2494                        ESR_INT_DET0_P1 |
2495                        ESR_INT_XSRDY_P1 |
2496                        ESR_INT_XDP_P1_CH3 |
2497                        ESR_INT_XDP_P1_CH2 |
2498                        ESR_INT_XDP_P1_CH1 |
2499                        ESR_INT_XDP_P1_CH0);
2500                 break;
2501
2502         default:
2503                 return -EINVAL;
2504         }
2505
2506         if ((sig & mask) != val) {
2507                 int err;
2508                 err = serdes_init_1g_serdes(np);
2509                 if (!err) {
2510                         np->flags &= ~NIU_FLAGS_10G;
2511                         np->mac_xcvr = MAC_XCVR_PCS;
2512                 }  else {
2513                         dev_err(np->device, PFX "Port %u 10G/1G SERDES Link Failed \n",
2514                          np->port);
2515                         return -ENODEV;
2516                 }
2517         }
2518
2519         return 0;
2520 }
2521
2522 static int niu_determine_phy_disposition(struct niu *np)
2523 {
2524         struct niu_parent *parent = np->parent;
2525         u8 plat_type = parent->plat_type;
2526         const struct niu_phy_template *tp;
2527         u32 phy_addr_off = 0;
2528
2529         if (plat_type == PLAT_TYPE_NIU) {
2530                 switch (np->flags &
2531                         (NIU_FLAGS_10G |
2532                          NIU_FLAGS_FIBER |
2533                          NIU_FLAGS_XCVR_SERDES)) {
2534                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2535                         /* 10G Serdes */
2536                         tp = &phy_template_niu_10g_serdes;
2537                         break;
2538                 case NIU_FLAGS_XCVR_SERDES:
2539                         /* 1G Serdes */
2540                         tp = &phy_template_niu_1g_serdes;
2541                         break;
2542                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2543                         /* 10G Fiber */
2544                 default:
2545                         tp = &phy_template_niu_10g_fiber;
2546                         phy_addr_off += np->port;
2547                         break;
2548                 }
2549         } else {
2550                 switch (np->flags &
2551                         (NIU_FLAGS_10G |
2552                          NIU_FLAGS_FIBER |
2553                          NIU_FLAGS_XCVR_SERDES)) {
2554                 case 0:
2555                         /* 1G copper */
2556                         tp = &phy_template_1g_copper;
2557                         if (plat_type == PLAT_TYPE_VF_P0)
2558                                 phy_addr_off = 10;
2559                         else if (plat_type == PLAT_TYPE_VF_P1)
2560                                 phy_addr_off = 26;
2561
2562                         phy_addr_off += (np->port ^ 0x3);
2563                         break;
2564
2565                 case NIU_FLAGS_10G:
2566                         /* 10G copper */
2567                         tp = &phy_template_10g_copper;
2568                         break;
2569
2570                 case NIU_FLAGS_FIBER:
2571                         /* 1G fiber */
2572                         tp = &phy_template_1g_fiber;
2573                         break;
2574
2575                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2576                         /* 10G fiber */
2577                         tp = &phy_template_10g_fiber;
2578                         if (plat_type == PLAT_TYPE_VF_P0 ||
2579                             plat_type == PLAT_TYPE_VF_P1)
2580                                 phy_addr_off = 8;
2581                         phy_addr_off += np->port;
2582                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2583                                 tp = &phy_template_10g_fiber_hotplug;
2584                                 if (np->port == 0)
2585                                         phy_addr_off = 8;
2586                                 if (np->port == 1)
2587                                         phy_addr_off = 12;
2588                         }
2589                         break;
2590
2591                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2592                 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2593                 case NIU_FLAGS_XCVR_SERDES:
2594                         switch(np->port) {
2595                         case 0:
2596                         case 1:
2597                                 tp = &phy_template_10g_serdes;
2598                                 break;
2599                         case 2:
2600                         case 3:
2601                                 tp = &phy_template_1g_rgmii;
2602                                 break;
2603                         default:
2604                                 return -EINVAL;
2605                                 break;
2606                         }
2607                         phy_addr_off = niu_atca_port_num[np->port];
2608                         break;
2609
2610                 default:
2611                         return -EINVAL;
2612                 }
2613         }
2614
2615         np->phy_ops = tp->ops;
2616         np->phy_addr = tp->phy_addr_base + phy_addr_off;
2617
2618         return 0;
2619 }
2620
2621 static int niu_init_link(struct niu *np)
2622 {
2623         struct niu_parent *parent = np->parent;
2624         int err, ignore;
2625
2626         if (parent->plat_type == PLAT_TYPE_NIU) {
2627                 err = niu_xcvr_init(np);
2628                 if (err)
2629                         return err;
2630                 msleep(200);
2631         }
2632         err = niu_serdes_init(np);
2633         if (err)
2634                 return err;
2635         msleep(200);
2636         err = niu_xcvr_init(np);
2637         if (!err)
2638                 niu_link_status(np, &ignore);
2639         return 0;
2640 }
2641
2642 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2643 {
2644         u16 reg0 = addr[4] << 8 | addr[5];
2645         u16 reg1 = addr[2] << 8 | addr[3];
2646         u16 reg2 = addr[0] << 8 | addr[1];
2647
2648         if (np->flags & NIU_FLAGS_XMAC) {
2649                 nw64_mac(XMAC_ADDR0, reg0);
2650                 nw64_mac(XMAC_ADDR1, reg1);
2651                 nw64_mac(XMAC_ADDR2, reg2);
2652         } else {
2653                 nw64_mac(BMAC_ADDR0, reg0);
2654                 nw64_mac(BMAC_ADDR1, reg1);
2655                 nw64_mac(BMAC_ADDR2, reg2);
2656         }
2657 }
2658
2659 static int niu_num_alt_addr(struct niu *np)
2660 {
2661         if (np->flags & NIU_FLAGS_XMAC)
2662                 return XMAC_NUM_ALT_ADDR;
2663         else
2664                 return BMAC_NUM_ALT_ADDR;
2665 }
2666
2667 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2668 {
2669         u16 reg0 = addr[4] << 8 | addr[5];
2670         u16 reg1 = addr[2] << 8 | addr[3];
2671         u16 reg2 = addr[0] << 8 | addr[1];
2672
2673         if (index >= niu_num_alt_addr(np))
2674                 return -EINVAL;
2675
2676         if (np->flags & NIU_FLAGS_XMAC) {
2677                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2678                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2679                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2680         } else {
2681                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2682                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2683                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2684         }
2685
2686         return 0;
2687 }
2688
2689 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2690 {
2691         unsigned long reg;
2692         u64 val, mask;
2693
2694         if (index >= niu_num_alt_addr(np))
2695                 return -EINVAL;
2696
2697         if (np->flags & NIU_FLAGS_XMAC) {
2698                 reg = XMAC_ADDR_CMPEN;
2699                 mask = 1 << index;
2700         } else {
2701                 reg = BMAC_ADDR_CMPEN;
2702                 mask = 1 << (index + 1);
2703         }
2704
2705         val = nr64_mac(reg);
2706         if (on)
2707                 val |= mask;
2708         else
2709                 val &= ~mask;
2710         nw64_mac(reg, val);
2711
2712         return 0;
2713 }
2714
2715 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2716                                    int num, int mac_pref)
2717 {
2718         u64 val = nr64_mac(reg);
2719         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2720         val |= num;
2721         if (mac_pref)
2722                 val |= HOST_INFO_MPR;
2723         nw64_mac(reg, val);
2724 }
2725
2726 static int __set_rdc_table_num(struct niu *np,
2727                                int xmac_index, int bmac_index,
2728                                int rdc_table_num, int mac_pref)
2729 {
2730         unsigned long reg;
2731
2732         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2733                 return -EINVAL;
2734         if (np->flags & NIU_FLAGS_XMAC)
2735                 reg = XMAC_HOST_INFO(xmac_index);
2736         else
2737                 reg = BMAC_HOST_INFO(bmac_index);
2738         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2739         return 0;
2740 }
2741
2742 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2743                                          int mac_pref)
2744 {
2745         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2746 }
2747
2748 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2749                                            int mac_pref)
2750 {
2751         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2752 }
2753
2754 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2755                                      int table_num, int mac_pref)
2756 {
2757         if (idx >= niu_num_alt_addr(np))
2758                 return -EINVAL;
2759         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2760 }
2761
2762 static u64 vlan_entry_set_parity(u64 reg_val)
2763 {
2764         u64 port01_mask;
2765         u64 port23_mask;
2766
2767         port01_mask = 0x00ff;
2768         port23_mask = 0xff00;
2769
2770         if (hweight64(reg_val & port01_mask) & 1)
2771                 reg_val |= ENET_VLAN_TBL_PARITY0;
2772         else
2773                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2774
2775         if (hweight64(reg_val & port23_mask) & 1)
2776                 reg_val |= ENET_VLAN_TBL_PARITY1;
2777         else
2778                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2779
2780         return reg_val;
2781 }
2782
2783 static void vlan_tbl_write(struct niu *np, unsigned long index,
2784                            int port, int vpr, int rdc_table)
2785 {
2786         u64 reg_val = nr64(ENET_VLAN_TBL(index));
2787
2788         reg_val &= ~((ENET_VLAN_TBL_VPR |
2789                       ENET_VLAN_TBL_VLANRDCTBLN) <<
2790                      ENET_VLAN_TBL_SHIFT(port));
2791         if (vpr)
2792                 reg_val |= (ENET_VLAN_TBL_VPR <<
2793                             ENET_VLAN_TBL_SHIFT(port));
2794         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2795
2796         reg_val = vlan_entry_set_parity(reg_val);
2797
2798         nw64(ENET_VLAN_TBL(index), reg_val);
2799 }
2800
2801 static void vlan_tbl_clear(struct niu *np)
2802 {
2803         int i;
2804
2805         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2806                 nw64(ENET_VLAN_TBL(i), 0);
2807 }
2808
2809 static int tcam_wait_bit(struct niu *np, u64 bit)
2810 {
2811         int limit = 1000;
2812
2813         while (--limit > 0) {
2814                 if (nr64(TCAM_CTL) & bit)
2815                         break;
2816                 udelay(1);
2817         }
2818         if (limit < 0)
2819                 return -ENODEV;
2820
2821         return 0;
2822 }
2823
2824 static int tcam_flush(struct niu *np, int index)
2825 {
2826         nw64(TCAM_KEY_0, 0x00);
2827         nw64(TCAM_KEY_MASK_0, 0xff);
2828         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2829
2830         return tcam_wait_bit(np, TCAM_CTL_STAT);
2831 }
2832
2833 #if 0
2834 static int tcam_read(struct niu *np, int index,
2835                      u64 *key, u64 *mask)
2836 {
2837         int err;
2838
2839         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2840         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2841         if (!err) {
2842                 key[0] = nr64(TCAM_KEY_0);
2843                 key[1] = nr64(TCAM_KEY_1);
2844                 key[2] = nr64(TCAM_KEY_2);
2845                 key[3] = nr64(TCAM_KEY_3);
2846                 mask[0] = nr64(TCAM_KEY_MASK_0);
2847                 mask[1] = nr64(TCAM_KEY_MASK_1);
2848                 mask[2] = nr64(TCAM_KEY_MASK_2);
2849                 mask[3] = nr64(TCAM_KEY_MASK_3);
2850         }
2851         return err;
2852 }
2853 #endif
2854
2855 static int tcam_write(struct niu *np, int index,
2856                       u64 *key, u64 *mask)
2857 {
2858         nw64(TCAM_KEY_0, key[0]);
2859         nw64(TCAM_KEY_1, key[1]);
2860         nw64(TCAM_KEY_2, key[2]);
2861         nw64(TCAM_KEY_3, key[3]);
2862         nw64(TCAM_KEY_MASK_0, mask[0]);
2863         nw64(TCAM_KEY_MASK_1, mask[1]);
2864         nw64(TCAM_KEY_MASK_2, mask[2]);
2865         nw64(TCAM_KEY_MASK_3, mask[3]);
2866         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2867
2868         return tcam_wait_bit(np, TCAM_CTL_STAT);
2869 }
2870
2871 #if 0
2872 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2873 {
2874         int err;
2875
2876         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2877         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2878         if (!err)
2879                 *data = nr64(TCAM_KEY_1);
2880
2881         return err;
2882 }
2883 #endif
2884
2885 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2886 {
2887         nw64(TCAM_KEY_1, assoc_data);
2888         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2889
2890         return tcam_wait_bit(np, TCAM_CTL_STAT);
2891 }
2892
2893 static void tcam_enable(struct niu *np, int on)
2894 {
2895         u64 val = nr64(FFLP_CFG_1);
2896
2897         if (on)
2898                 val &= ~FFLP_CFG_1_TCAM_DIS;
2899         else
2900                 val |= FFLP_CFG_1_TCAM_DIS;
2901         nw64(FFLP_CFG_1, val);
2902 }
2903
2904 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2905 {
2906         u64 val = nr64(FFLP_CFG_1);
2907
2908         val &= ~(FFLP_CFG_1_FFLPINITDONE |
2909                  FFLP_CFG_1_CAMLAT |
2910                  FFLP_CFG_1_CAMRATIO);
2911         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2912         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2913         nw64(FFLP_CFG_1, val);
2914
2915         val = nr64(FFLP_CFG_1);
2916         val |= FFLP_CFG_1_FFLPINITDONE;
2917         nw64(FFLP_CFG_1, val);
2918 }
2919
2920 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2921                                       int on)
2922 {
2923         unsigned long reg;
2924         u64 val;
2925
2926         if (class < CLASS_CODE_ETHERTYPE1 ||
2927             class > CLASS_CODE_ETHERTYPE2)
2928                 return -EINVAL;
2929
2930         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2931         val = nr64(reg);
2932         if (on)
2933                 val |= L2_CLS_VLD;
2934         else
2935                 val &= ~L2_CLS_VLD;
2936         nw64(reg, val);
2937
2938         return 0;
2939 }
2940
2941 #if 0
2942 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2943                                    u64 ether_type)
2944 {
2945         unsigned long reg;
2946         u64 val;
2947
2948         if (class < CLASS_CODE_ETHERTYPE1 ||
2949             class > CLASS_CODE_ETHERTYPE2 ||
2950             (ether_type & ~(u64)0xffff) != 0)
2951                 return -EINVAL;
2952
2953         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2954         val = nr64(reg);
2955         val &= ~L2_CLS_ETYPE;
2956         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2957         nw64(reg, val);
2958
2959         return 0;
2960 }
2961 #endif
2962
2963 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2964                                      int on)
2965 {
2966         unsigned long reg;
2967         u64 val;
2968
2969         if (class < CLASS_CODE_USER_PROG1 ||
2970             class > CLASS_CODE_USER_PROG4)
2971                 return -EINVAL;
2972
2973         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2974         val = nr64(reg);
2975         if (on)
2976                 val |= L3_CLS_VALID;
2977         else
2978                 val &= ~L3_CLS_VALID;
2979         nw64(reg, val);
2980
2981         return 0;
2982 }
2983
2984 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2985                                   int ipv6, u64 protocol_id,
2986                                   u64 tos_mask, u64 tos_val)
2987 {
2988         unsigned long reg;
2989         u64 val;
2990
2991         if (class < CLASS_CODE_USER_PROG1 ||
2992             class > CLASS_CODE_USER_PROG4 ||
2993             (protocol_id & ~(u64)0xff) != 0 ||
2994             (tos_mask & ~(u64)0xff) != 0 ||
2995             (tos_val & ~(u64)0xff) != 0)
2996                 return -EINVAL;
2997
2998         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2999         val = nr64(reg);
3000         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
3001                  L3_CLS_TOSMASK | L3_CLS_TOS);
3002         if (ipv6)
3003                 val |= L3_CLS_IPVER;
3004         val |= (protocol_id << L3_CLS_PID_SHIFT);
3005         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
3006         val |= (tos_val << L3_CLS_TOS_SHIFT);
3007         nw64(reg, val);
3008
3009         return 0;
3010 }
3011
3012 static int tcam_early_init(struct niu *np)
3013 {
3014         unsigned long i;
3015         int err;
3016
3017         tcam_enable(np, 0);
3018         tcam_set_lat_and_ratio(np,
3019                                DEFAULT_TCAM_LATENCY,
3020                                DEFAULT_TCAM_ACCESS_RATIO);
3021         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3022                 err = tcam_user_eth_class_enable(np, i, 0);
3023                 if (err)
3024                         return err;
3025         }
3026         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3027                 err = tcam_user_ip_class_enable(np, i, 0);
3028                 if (err)
3029                         return err;
3030         }
3031
3032         return 0;
3033 }
3034
3035 static int tcam_flush_all(struct niu *np)
3036 {
3037         unsigned long i;
3038
3039         for (i = 0; i < np->parent->tcam_num_entries; i++) {
3040                 int err = tcam_flush(np, i);
3041                 if (err)
3042                         return err;
3043         }
3044         return 0;
3045 }
3046
3047 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3048 {
3049         return ((u64)index | (num_entries == 1 ?
3050                               HASH_TBL_ADDR_AUTOINC : 0));
3051 }
3052
3053 #if 0
3054 static int hash_read(struct niu *np, unsigned long partition,
3055                      unsigned long index, unsigned long num_entries,
3056                      u64 *data)
3057 {
3058         u64 val = hash_addr_regval(index, num_entries);
3059         unsigned long i;
3060
3061         if (partition >= FCRAM_NUM_PARTITIONS ||
3062             index + num_entries > FCRAM_SIZE)
3063                 return -EINVAL;
3064
3065         nw64(HASH_TBL_ADDR(partition), val);
3066         for (i = 0; i < num_entries; i++)
3067                 data[i] = nr64(HASH_TBL_DATA(partition));
3068
3069         return 0;
3070 }
3071 #endif
3072
3073 static int hash_write(struct niu *np, unsigned long partition,
3074                       unsigned long index, unsigned long num_entries,
3075                       u64 *data)
3076 {
3077         u64 val = hash_addr_regval(index, num_entries);
3078         unsigned long i;
3079
3080         if (partition >= FCRAM_NUM_PARTITIONS ||
3081             index + (num_entries * 8) > FCRAM_SIZE)
3082                 return -EINVAL;
3083
3084         nw64(HASH_TBL_ADDR(partition), val);
3085         for (i = 0; i < num_entries; i++)
3086                 nw64(HASH_TBL_DATA(partition), data[i]);
3087
3088         return 0;
3089 }
3090
3091 static void fflp_reset(struct niu *np)
3092 {
3093         u64 val;
3094
3095         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3096         udelay(10);
3097         nw64(FFLP_CFG_1, 0);
3098
3099         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3100         nw64(FFLP_CFG_1, val);
3101 }
3102
3103 static void fflp_set_timings(struct niu *np)
3104 {
3105         u64 val = nr64(FFLP_CFG_1);
3106
3107         val &= ~FFLP_CFG_1_FFLPINITDONE;
3108         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3109         nw64(FFLP_CFG_1, val);
3110
3111         val = nr64(FFLP_CFG_1);
3112         val |= FFLP_CFG_1_FFLPINITDONE;
3113         nw64(FFLP_CFG_1, val);
3114
3115         val = nr64(FCRAM_REF_TMR);
3116         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3117         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3118         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3119         nw64(FCRAM_REF_TMR, val);
3120 }
3121
3122 static int fflp_set_partition(struct niu *np, u64 partition,
3123                               u64 mask, u64 base, int enable)
3124 {
3125         unsigned long reg;
3126         u64 val;
3127
3128         if (partition >= FCRAM_NUM_PARTITIONS ||
3129             (mask & ~(u64)0x1f) != 0 ||
3130             (base & ~(u64)0x1f) != 0)
3131                 return -EINVAL;
3132
3133         reg = FLW_PRT_SEL(partition);
3134
3135         val = nr64(reg);
3136         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3137         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3138         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3139         if (enable)
3140                 val |= FLW_PRT_SEL_EXT;
3141         nw64(reg, val);
3142
3143         return 0;
3144 }
3145
3146 static int fflp_disable_all_partitions(struct niu *np)
3147 {
3148         unsigned long i;
3149
3150         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3151                 int err = fflp_set_partition(np, 0, 0, 0, 0);
3152                 if (err)
3153                         return err;
3154         }
3155         return 0;
3156 }
3157
3158 static void fflp_llcsnap_enable(struct niu *np, int on)
3159 {
3160         u64 val = nr64(FFLP_CFG_1);
3161
3162         if (on)
3163                 val |= FFLP_CFG_1_LLCSNAP;
3164         else
3165                 val &= ~FFLP_CFG_1_LLCSNAP;
3166         nw64(FFLP_CFG_1, val);
3167 }
3168
3169 static void fflp_errors_enable(struct niu *np, int on)
3170 {
3171         u64 val = nr64(FFLP_CFG_1);
3172
3173         if (on)
3174                 val &= ~FFLP_CFG_1_ERRORDIS;
3175         else
3176                 val |= FFLP_CFG_1_ERRORDIS;
3177         nw64(FFLP_CFG_1, val);
3178 }
3179
3180 static int fflp_hash_clear(struct niu *np)
3181 {
3182         struct fcram_hash_ipv4 ent;
3183         unsigned long i;
3184
3185         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
3186         memset(&ent, 0, sizeof(ent));
3187         ent.header = HASH_HEADER_EXT;
3188
3189         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3190                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3191                 if (err)
3192                         return err;
3193         }
3194         return 0;
3195 }
3196
3197 static int fflp_early_init(struct niu *np)
3198 {
3199         struct niu_parent *parent;
3200         unsigned long flags;
3201         int err;
3202
3203         niu_lock_parent(np, flags);
3204
3205         parent = np->parent;
3206         err = 0;
3207         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3208                 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
3209                        np->port);
3210                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3211                         fflp_reset(np);
3212                         fflp_set_timings(np);
3213                         err = fflp_disable_all_partitions(np);
3214                         if (err) {
3215                                 niudbg(PROBE, "fflp_disable_all_partitions "
3216                                        "failed, err=%d\n", err);
3217                                 goto out;
3218                         }
3219                 }
3220
3221                 err = tcam_early_init(np);
3222                 if (err) {
3223                         niudbg(PROBE, "tcam_early_init failed, err=%d\n",
3224                                err);
3225                         goto out;
3226                 }
3227                 fflp_llcsnap_enable(np, 1);
3228                 fflp_errors_enable(np, 0);
3229                 nw64(H1POLY, 0);
3230                 nw64(H2POLY, 0);
3231
3232                 err = tcam_flush_all(np);
3233                 if (err) {
3234                         niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
3235                                err);
3236                         goto out;
3237                 }
3238                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3239                         err = fflp_hash_clear(np);
3240                         if (err) {
3241                                 niudbg(PROBE, "fflp_hash_clear failed, "
3242                                        "err=%d\n", err);
3243                                 goto out;
3244                         }
3245                 }
3246
3247                 vlan_tbl_clear(np);
3248
3249                 niudbg(PROBE, "fflp_early_init: Success\n");
3250                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3251         }
3252 out:
3253         niu_unlock_parent(np, flags);
3254         return err;
3255 }
3256
3257 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3258 {
3259         if (class_code < CLASS_CODE_USER_PROG1 ||
3260             class_code > CLASS_CODE_SCTP_IPV6)
3261                 return -EINVAL;
3262
3263         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3264         return 0;
3265 }
3266
3267 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3268 {
3269         if (class_code < CLASS_CODE_USER_PROG1 ||
3270             class_code > CLASS_CODE_SCTP_IPV6)
3271                 return -EINVAL;
3272
3273         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3274         return 0;
3275 }
3276
3277 /* Entries for the ports are interleaved in the TCAM */
3278 static u16 tcam_get_index(struct niu *np, u16 idx)
3279 {
3280         /* One entry reserved for IP fragment rule */
3281         if (idx >= (np->clas.tcam_sz - 1))
3282                 idx = 0;
3283         return (np->clas.tcam_top + ((idx+1) * np->parent->num_ports));
3284 }
3285
3286 static u16 tcam_get_size(struct niu *np)
3287 {
3288         /* One entry reserved for IP fragment rule */
3289         return np->clas.tcam_sz - 1;
3290 }
3291
3292 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3293 {
3294         /* One entry reserved for IP fragment rule */
3295         return np->clas.tcam_valid_entries - 1;
3296 }
3297
3298 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3299                               u32 offset, u32 size)
3300 {
3301         int i = skb_shinfo(skb)->nr_frags;
3302         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3303
3304         frag->page = page;
3305         frag->page_offset = offset;
3306         frag->size = size;
3307
3308         skb->len += size;
3309         skb->data_len += size;
3310         skb->truesize += size;
3311
3312         skb_shinfo(skb)->nr_frags = i + 1;
3313 }
3314
3315 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3316 {
3317         a >>= PAGE_SHIFT;
3318         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3319
3320         return (a & (MAX_RBR_RING_SIZE - 1));
3321 }
3322
3323 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3324                                     struct page ***link)
3325 {
3326         unsigned int h = niu_hash_rxaddr(rp, addr);
3327         struct page *p, **pp;
3328
3329         addr &= PAGE_MASK;
3330         pp = &rp->rxhash[h];
3331         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3332                 if (p->index == addr) {
3333                         *link = pp;
3334                         break;
3335                 }
3336         }
3337
3338         return p;
3339 }
3340
3341 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3342 {
3343         unsigned int h = niu_hash_rxaddr(rp, base);
3344
3345         page->index = base;
3346         page->mapping = (struct address_space *) rp->rxhash[h];
3347         rp->rxhash[h] = page;
3348 }
3349
3350 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3351                             gfp_t mask, int start_index)
3352 {
3353         struct page *page;
3354         u64 addr;
3355         int i;
3356
3357         page = alloc_page(mask);
3358         if (!page)
3359                 return -ENOMEM;
3360
3361         addr = np->ops->map_page(np->device, page, 0,
3362                                  PAGE_SIZE, DMA_FROM_DEVICE);
3363
3364         niu_hash_page(rp, page, addr);
3365         if (rp->rbr_blocks_per_page > 1)
3366                 atomic_add(rp->rbr_blocks_per_page - 1,
3367                            &compound_head(page)->_count);
3368
3369         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3370                 __le32 *rbr = &rp->rbr[start_index + i];
3371
3372                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3373                 addr += rp->rbr_block_size;
3374         }
3375
3376         return 0;
3377 }
3378
3379 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3380 {
3381         int index = rp->rbr_index;
3382
3383         rp->rbr_pending++;
3384         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3385                 int err = niu_rbr_add_page(np, rp, mask, index);
3386
3387                 if (unlikely(err)) {
3388                         rp->rbr_pending--;
3389                         return;
3390                 }
3391
3392                 rp->rbr_index += rp->rbr_blocks_per_page;
3393                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3394                 if (rp->rbr_index == rp->rbr_table_size)
3395                         rp->rbr_index = 0;
3396
3397                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3398                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3399                         rp->rbr_pending = 0;
3400                 }
3401         }
3402 }
3403
3404 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3405 {
3406         unsigned int index = rp->rcr_index;
3407         int num_rcr = 0;
3408
3409         rp->rx_dropped++;
3410         while (1) {
3411                 struct page *page, **link;
3412                 u64 addr, val;
3413                 u32 rcr_size;
3414
3415                 num_rcr++;
3416
3417                 val = le64_to_cpup(&rp->rcr[index]);
3418                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3419                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3420                 page = niu_find_rxpage(rp, addr, &link);
3421
3422                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3423                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3424                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3425                         *link = (struct page *) page->mapping;
3426                         np->ops->unmap_page(np->device, page->index,
3427                                             PAGE_SIZE, DMA_FROM_DEVICE);
3428                         page->index = 0;
3429                         page->mapping = NULL;
3430                         __free_page(page);
3431                         rp->rbr_refill_pending++;
3432                 }
3433
3434                 index = NEXT_RCR(rp, index);
3435                 if (!(val & RCR_ENTRY_MULTI))
3436                         break;
3437
3438         }
3439         rp->rcr_index = index;
3440
3441         return num_rcr;
3442 }
3443
3444 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3445                               struct rx_ring_info *rp)
3446 {
3447         unsigned int index = rp->rcr_index;
3448         struct sk_buff *skb;
3449         int len, num_rcr;
3450
3451         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3452         if (unlikely(!skb))
3453                 return niu_rx_pkt_ignore(np, rp);
3454
3455         num_rcr = 0;
3456         while (1) {
3457                 struct page *page, **link;
3458                 u32 rcr_size, append_size;
3459                 u64 addr, val, off;
3460
3461                 num_rcr++;
3462
3463                 val = le64_to_cpup(&rp->rcr[index]);
3464
3465                 len = (val & RCR_ENTRY_L2_LEN) >>
3466                         RCR_ENTRY_L2_LEN_SHIFT;
3467                 len -= ETH_FCS_LEN;
3468
3469                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3470                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3471                 page = niu_find_rxpage(rp, addr, &link);
3472
3473                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3474                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3475
3476                 off = addr & ~PAGE_MASK;
3477                 append_size = rcr_size;
3478                 if (num_rcr == 1) {
3479                         int ptype;
3480
3481                         off += 2;
3482                         append_size -= 2;
3483
3484                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3485                         if ((ptype == RCR_PKT_TYPE_TCP ||
3486                              ptype == RCR_PKT_TYPE_UDP) &&
3487                             !(val & (RCR_ENTRY_NOPORT |
3488                                      RCR_ENTRY_ERROR)))
3489                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3490                         else
3491                                 skb->ip_summed = CHECKSUM_NONE;
3492                 }
3493                 if (!(val & RCR_ENTRY_MULTI))
3494                         append_size = len - skb->len;
3495
3496                 niu_rx_skb_append(skb, page, off, append_size);
3497                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3498                         *link = (struct page *) page->mapping;
3499                         np->ops->unmap_page(np->device, page->index,
3500                                             PAGE_SIZE, DMA_FROM_DEVICE);
3501                         page->index = 0;
3502                         page->mapping = NULL;
3503                         rp->rbr_refill_pending++;
3504                 } else
3505                         get_page(page);
3506
3507                 index = NEXT_RCR(rp, index);
3508                 if (!(val & RCR_ENTRY_MULTI))
3509                         break;
3510
3511         }
3512         rp->rcr_index = index;
3513
3514         skb_reserve(skb, NET_IP_ALIGN);
3515         __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
3516
3517         rp->rx_packets++;
3518         rp->rx_bytes += skb->len;
3519
3520         skb->protocol = eth_type_trans(skb, np->dev);
3521         skb_record_rx_queue(skb, rp->rx_channel);
3522         napi_gro_receive(napi, skb);
3523
3524         return num_rcr;
3525 }
3526
3527 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3528 {
3529         int blocks_per_page = rp->rbr_blocks_per_page;
3530         int err, index = rp->rbr_index;
3531
3532         err = 0;
3533         while (index < (rp->rbr_table_size - blocks_per_page)) {
3534                 err = niu_rbr_add_page(np, rp, mask, index);
3535                 if (err)
3536                         break;
3537
3538                 index += blocks_per_page;
3539         }
3540
3541         rp->rbr_index = index;
3542         return err;
3543 }
3544
3545 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3546 {
3547         int i;
3548
3549         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3550                 struct page *page;
3551
3552                 page = rp->rxhash[i];
3553                 while (page) {
3554                         struct page *next = (struct page *) page->mapping;
3555                         u64 base = page->index;
3556
3557                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
3558                                             DMA_FROM_DEVICE);
3559                         page->index = 0;
3560                         page->mapping = NULL;
3561
3562                         __free_page(page);
3563
3564                         page = next;
3565                 }
3566         }
3567
3568         for (i = 0; i < rp->rbr_table_size; i++)
3569                 rp->rbr[i] = cpu_to_le32(0);
3570         rp->rbr_index = 0;
3571 }
3572
3573 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3574 {
3575         struct tx_buff_info *tb = &rp->tx_buffs[idx];
3576         struct sk_buff *skb = tb->skb;
3577         struct tx_pkt_hdr *tp;
3578         u64 tx_flags;
3579         int i, len;
3580
3581         tp = (struct tx_pkt_hdr *) skb->data;
3582         tx_flags = le64_to_cpup(&tp->flags);
3583
3584         rp->tx_packets++;
3585         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3586                          ((tx_flags & TXHDR_PAD) / 2));
3587
3588         len = skb_headlen(skb);
3589         np->ops->unmap_single(np->device, tb->mapping,
3590                               len, DMA_TO_DEVICE);
3591
3592         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3593                 rp->mark_pending--;
3594
3595         tb->skb = NULL;
3596         do {
3597                 idx = NEXT_TX(rp, idx);
3598                 len -= MAX_TX_DESC_LEN;
3599         } while (len > 0);
3600
3601         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3602                 tb = &rp->tx_buffs[idx];
3603                 BUG_ON(tb->skb != NULL);
3604                 np->ops->unmap_page(np->device, tb->mapping,
3605                                     skb_shinfo(skb)->frags[i].size,
3606                                     DMA_TO_DEVICE);
3607                 idx = NEXT_TX(rp, idx);
3608         }
3609
3610         dev_kfree_skb(skb);
3611
3612         return idx;
3613 }
3614
3615 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
3616
3617 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3618 {
3619         struct netdev_queue *txq;
3620         u16 pkt_cnt, tmp;
3621         int cons, index;
3622         u64 cs;
3623
3624         index = (rp - np->tx_rings);
3625         txq = netdev_get_tx_queue(np->dev, index);
3626
3627         cs = rp->tx_cs;
3628         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3629                 goto out;
3630
3631         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3632         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3633                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3634
3635         rp->last_pkt_cnt = tmp;
3636
3637         cons = rp->cons;
3638
3639         niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
3640                np->dev->name, pkt_cnt, cons);
3641
3642         while (pkt_cnt--)
3643                 cons = release_tx_packet(np, rp, cons);
3644
3645         rp->cons = cons;
3646         smp_mb();
3647
3648 out:
3649         if (unlikely(netif_tx_queue_stopped(txq) &&
3650                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3651                 __netif_tx_lock(txq, smp_processor_id());
3652                 if (netif_tx_queue_stopped(txq) &&
3653                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3654                         netif_tx_wake_queue(txq);
3655                 __netif_tx_unlock(txq);
3656         }
3657 }
3658
3659 static inline void niu_sync_rx_discard_stats(struct niu *np,
3660                                              struct rx_ring_info *rp,
3661                                              const int limit)
3662 {
3663         /* This elaborate scheme is needed for reading the RX discard
3664          * counters, as they are only 16-bit and can overflow quickly,
3665          * and because the overflow indication bit is not usable as
3666          * the counter value does not wrap, but remains at max value
3667          * 0xFFFF.
3668          *
3669          * In theory and in practice counters can be lost in between
3670          * reading nr64() and clearing the counter nw64().  For this
3671          * reason, the number of counter clearings nw64() is
3672          * limited/reduced though the limit parameter.
3673          */
3674         int rx_channel = rp->rx_channel;
3675         u32 misc, wred;
3676
3677         /* RXMISC (Receive Miscellaneous Discard Count), covers the
3678          * following discard events: IPP (Input Port Process),
3679          * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3680          * Block Ring) prefetch buffer is empty.
3681          */
3682         misc = nr64(RXMISC(rx_channel));
3683         if (unlikely((misc & RXMISC_COUNT) > limit)) {
3684                 nw64(RXMISC(rx_channel), 0);
3685                 rp->rx_errors += misc & RXMISC_COUNT;
3686
3687                 if (unlikely(misc & RXMISC_OFLOW))
3688                         dev_err(np->device, "rx-%d: Counter overflow "
3689                                 "RXMISC discard\n", rx_channel);
3690
3691                 niudbg(RX_ERR, "%s-rx-%d: MISC drop=%u over=%u\n",
3692                        np->dev->name, rx_channel, misc, misc-limit);
3693         }
3694
3695         /* WRED (Weighted Random Early Discard) by hardware */
3696         wred = nr64(RED_DIS_CNT(rx_channel));
3697         if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3698                 nw64(RED_DIS_CNT(rx_channel), 0);
3699                 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3700
3701                 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3702                         dev_err(np->device, "rx-%d: Counter overflow "
3703                                 "WRED discard\n", rx_channel);
3704
3705                 niudbg(RX_ERR, "%s-rx-%d: WRED drop=%u over=%u\n",
3706                        np->dev->name, rx_channel, wred, wred-limit);
3707         }
3708 }
3709
3710 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3711                        struct rx_ring_info *rp, int budget)
3712 {
3713         int qlen, rcr_done = 0, work_done = 0;
3714         struct rxdma_mailbox *mbox = rp->mbox;
3715         u64 stat;
3716
3717 #if 1
3718         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3719         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3720 #else
3721         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3722         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3723 #endif
3724         mbox->rx_dma_ctl_stat = 0;
3725         mbox->rcrstat_a = 0;
3726
3727         niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
3728                np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
3729
3730         rcr_done = work_done = 0;
3731         qlen = min(qlen, budget);
3732         while (work_done < qlen) {
3733                 rcr_done += niu_process_rx_pkt(napi, np, rp);
3734                 work_done++;
3735         }
3736
3737         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3738                 unsigned int i;
3739
3740                 for (i = 0; i < rp->rbr_refill_pending; i++)
3741                         niu_rbr_refill(np, rp, GFP_ATOMIC);
3742                 rp->rbr_refill_pending = 0;
3743         }
3744
3745         stat = (RX_DMA_CTL_STAT_MEX |
3746                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3747                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3748
3749         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3750
3751         /* Only sync discards stats when qlen indicate potential for drops */
3752         if (qlen > 10)
3753                 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3754
3755         return work_done;
3756 }
3757
3758 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3759 {
3760         u64 v0 = lp->v0;
3761         u32 tx_vec = (v0 >> 32);
3762         u32 rx_vec = (v0 & 0xffffffff);
3763         int i, work_done = 0;
3764
3765         niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
3766                np->dev->name, (unsigned long long) v0);
3767
3768         for (i = 0; i < np->num_tx_rings; i++) {
3769                 struct tx_ring_info *rp = &np->tx_rings[i];
3770                 if (tx_vec & (1 << rp->tx_channel))
3771                         niu_tx_work(np, rp);
3772                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3773         }
3774
3775         for (i = 0; i < np->num_rx_rings; i++) {
3776                 struct rx_ring_info *rp = &np->rx_rings[i];
3777
3778                 if (rx_vec & (1 << rp->rx_channel)) {
3779                         int this_work_done;
3780
3781                         this_work_done = niu_rx_work(&lp->napi, np, rp,
3782                                                      budget);
3783
3784                         budget -= this_work_done;
3785                         work_done += this_work_done;
3786                 }
3787                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3788         }
3789
3790         return work_done;
3791 }
3792
3793 static int niu_poll(struct napi_struct *napi, int budget)
3794 {
3795         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3796         struct niu *np = lp->np;
3797         int work_done;
3798
3799         work_done = niu_poll_core(np, lp, budget);
3800
3801         if (work_done < budget) {
3802                 napi_complete(napi);
3803                 niu_ldg_rearm(np, lp, 1);
3804         }
3805         return work_done;
3806 }
3807
3808 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3809                                   u64 stat)
3810 {
3811         dev_err(np->device, PFX "%s: RX channel %u errors ( ",
3812                 np->dev->name, rp->rx_channel);
3813
3814         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3815                 printk("RBR_TMOUT ");
3816         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3817                 printk("RSP_CNT ");
3818         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3819                 printk("BYTE_EN_BUS ");
3820         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3821                 printk("RSP_DAT ");
3822         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3823                 printk("RCR_ACK ");
3824         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3825                 printk("RCR_SHA_PAR ");
3826         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3827                 printk("RBR_PRE_PAR ");
3828         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3829                 printk("CONFIG ");
3830         if (stat & RX_DMA_CTL_STAT_RCRINCON)
3831                 printk("RCRINCON ");
3832         if (stat & RX_DMA_CTL_STAT_RCRFULL)
3833                 printk("RCRFULL ");
3834         if (stat & RX_DMA_CTL_STAT_RBRFULL)
3835                 printk("RBRFULL ");
3836         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3837                 printk("RBRLOGPAGE ");
3838         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3839                 printk("CFIGLOGPAGE ");
3840         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3841                 printk("DC_FIDO ");
3842
3843         printk(")\n");
3844 }
3845
3846 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3847 {
3848         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3849         int err = 0;
3850
3851
3852         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3853                     RX_DMA_CTL_STAT_PORT_FATAL))
3854                 err = -EINVAL;
3855
3856         if (err) {
3857                 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
3858                         np->dev->name, rp->rx_channel,
3859                         (unsigned long long) stat);
3860
3861                 niu_log_rxchan_errors(np, rp, stat);
3862         }
3863
3864         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3865              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3866
3867         return err;
3868 }
3869
3870 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3871                                   u64 cs)
3872 {
3873         dev_err(np->device, PFX "%s: TX channel %u errors ( ",
3874                 np->dev->name, rp->tx_channel);
3875
3876         if (cs & TX_CS_MBOX_ERR)
3877                 printk("MBOX ");
3878         if (cs & TX_CS_PKT_SIZE_ERR)
3879                 printk("PKT_SIZE ");
3880         if (cs & TX_CS_TX_RING_OFLOW)
3881                 printk("TX_RING_OFLOW ");
3882         if (cs & TX_CS_PREF_BUF_PAR_ERR)
3883                 printk("PREF_BUF_PAR ");
3884         if (cs & TX_CS_NACK_PREF)
3885                 printk("NACK_PREF ");
3886         if (cs & TX_CS_NACK_PKT_RD)
3887                 printk("NACK_PKT_RD ");
3888         if (cs & TX_CS_CONF_PART_ERR)
3889                 printk("CONF_PART ");
3890         if (cs & TX_CS_PKT_PRT_ERR)
3891                 printk("PKT_PTR ");
3892
3893         printk(")\n");
3894 }
3895
3896 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3897 {
3898         u64 cs, logh, logl;
3899
3900         cs = nr64(TX_CS(rp->tx_channel));
3901         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3902         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3903
3904         dev_err(np->device, PFX "%s: TX channel %u error, "
3905                 "cs[%llx] logh[%llx] logl[%llx]\n",
3906                 np->dev->name, rp->tx_channel,
3907                 (unsigned long long) cs,
3908                 (unsigned long long) logh,
3909                 (unsigned long long) logl);
3910
3911         niu_log_txchan_errors(np, rp, cs);
3912
3913         return -ENODEV;
3914 }
3915
3916 static int niu_mif_interrupt(struct niu *np)
3917 {
3918         u64 mif_status = nr64(MIF_STATUS);
3919         int phy_mdint = 0;
3920
3921         if (np->flags & NIU_FLAGS_XMAC) {
3922                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3923
3924                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3925                         phy_mdint = 1;
3926         }
3927
3928         dev_err(np->device, PFX "%s: MIF interrupt, "
3929                 "stat[%llx] phy_mdint(%d)\n",
3930                 np->dev->name, (unsigned long long) mif_status, phy_mdint);
3931
3932         return -ENODEV;
3933 }
3934
3935 static void niu_xmac_interrupt(struct niu *np)
3936 {
3937         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3938         u64 val;
3939
3940         val = nr64_mac(XTXMAC_STATUS);
3941         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3942                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3943         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3944                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3945         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3946                 mp->tx_fifo_errors++;
3947         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3948                 mp->tx_overflow_errors++;
3949         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3950                 mp->tx_max_pkt_size_errors++;
3951         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3952                 mp->tx_underflow_errors++;
3953
3954         val = nr64_mac(XRXMAC_STATUS);
3955         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3956                 mp->rx_local_faults++;
3957         if (val & XRXMAC_STATUS_RFLT_DET)
3958                 mp->rx_remote_faults++;
3959         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3960                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3961         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3962                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3963         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3964                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3965         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3966                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3967         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3968                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3969         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3970                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3971         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3972                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3973         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3974                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3975         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3976                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3977         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3978                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3979         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3980                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3981         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3982                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3983         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3984                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3985         if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
3986                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3987         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3988                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3989         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3990                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3991         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3992                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3993         if (val & XRXMAC_STATUS_RXUFLOW)
3994                 mp->rx_underflows++;
3995         if (val & XRXMAC_STATUS_RXOFLOW)
3996                 mp->rx_overflows++;
3997
3998         val = nr64_mac(XMAC_FC_STAT);
3999         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
4000                 mp->pause_off_state++;
4001         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
4002                 mp->pause_on_state++;
4003         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
4004                 mp->pause_received++;
4005 }
4006
4007 static void niu_bmac_interrupt(struct niu *np)
4008 {
4009         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4010         u64 val;
4011
4012         val = nr64_mac(BTXMAC_STATUS);
4013         if (val & BTXMAC_STATUS_UNDERRUN)
4014                 mp->tx_underflow_errors++;
4015         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
4016                 mp->tx_max_pkt_size_errors++;
4017         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4018                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4019         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4020                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4021
4022         val = nr64_mac(BRXMAC_STATUS);
4023         if (val & BRXMAC_STATUS_OVERFLOW)
4024                 mp->rx_overflows++;
4025         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4026                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4027         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4028                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4029         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4030                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4031         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4032                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4033
4034         val = nr64_mac(BMAC_CTRL_STATUS);
4035         if (val & BMAC_CTRL_STATUS_NOPAUSE)
4036                 mp->pause_off_state++;
4037         if (val & BMAC_CTRL_STATUS_PAUSE)
4038                 mp->pause_on_state++;
4039         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4040                 mp->pause_received++;
4041 }
4042
4043 static int niu_mac_interrupt(struct niu *np)
4044 {
4045         if (np->flags & NIU_FLAGS_XMAC)
4046                 niu_xmac_interrupt(np);
4047         else
4048                 niu_bmac_interrupt(np);
4049
4050         return 0;
4051 }
4052
4053 static void niu_log_device_error(struct niu *np, u64 stat)
4054 {
4055         dev_err(np->device, PFX "%s: Core device errors ( ",
4056                 np->dev->name);
4057
4058         if (stat & SYS_ERR_MASK_META2)
4059                 printk("META2 ");
4060         if (stat & SYS_ERR_MASK_META1)
4061                 printk("META1 ");
4062         if (stat & SYS_ERR_MASK_PEU)
4063                 printk("PEU ");
4064         if (stat & SYS_ERR_MASK_TXC)
4065                 printk("TXC ");
4066         if (stat & SYS_ERR_MASK_RDMC)
4067                 printk("RDMC ");
4068         if (stat & SYS_ERR_MASK_TDMC)
4069                 printk("TDMC ");
4070         if (stat & SYS_ERR_MASK_ZCP)
4071                 printk("ZCP ");
4072         if (stat & SYS_ERR_MASK_FFLP)
4073                 printk("FFLP ");
4074         if (stat & SYS_ERR_MASK_IPP)
4075                 printk("IPP ");
4076         if (stat & SYS_ERR_MASK_MAC)
4077                 printk("MAC ");
4078         if (stat & SYS_ERR_MASK_SMX)
4079                 printk("SMX ");
4080
4081         printk(")\n");
4082 }
4083
4084 static int niu_device_error(struct niu *np)
4085 {
4086         u64 stat = nr64(SYS_ERR_STAT);
4087
4088         dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
4089                 np->dev->name, (unsigned long long) stat);
4090
4091         niu_log_device_error(np, stat);
4092
4093         return -ENODEV;
4094 }
4095
4096 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4097                               u64 v0, u64 v1, u64 v2)
4098 {
4099
4100         int i, err = 0;
4101
4102         lp->v0 = v0;
4103         lp->v1 = v1;
4104         lp->v2 = v2;
4105
4106         if (v1 & 0x00000000ffffffffULL) {
4107                 u32 rx_vec = (v1 & 0xffffffff);
4108
4109                 for (i = 0; i < np->num_rx_rings; i++) {
4110                         struct rx_ring_info *rp = &np->rx_rings[i];
4111
4112                         if (rx_vec & (1 << rp->rx_channel)) {
4113                                 int r = niu_rx_error(np, rp);
4114                                 if (r) {
4115                                         err = r;
4116                                 } else {
4117                                         if (!v0)
4118                                                 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4119                                                      RX_DMA_CTL_STAT_MEX);
4120                                 }
4121                         }
4122                 }
4123         }
4124         if (v1 & 0x7fffffff00000000ULL) {
4125                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4126
4127                 for (i = 0; i < np->num_tx_rings; i++) {
4128                         struct tx_ring_info *rp = &np->tx_rings[i];
4129
4130                         if (tx_vec & (1 << rp->tx_channel)) {
4131                                 int r = niu_tx_error(np, rp);
4132                                 if (r)
4133                                         err = r;
4134                         }
4135                 }
4136         }
4137         if ((v0 | v1) & 0x8000000000000000ULL) {
4138                 int r = niu_mif_interrupt(np);
4139                 if (r)
4140                         err = r;
4141         }
4142         if (v2) {
4143                 if (v2 & 0x01ef) {
4144                         int r = niu_mac_interrupt(np);
4145                         if (r)
4146                                 err = r;
4147                 }
4148                 if (v2 & 0x0210) {
4149                         int r = niu_device_error(np);
4150                         if (r)
4151                                 err = r;
4152                 }
4153         }
4154
4155         if (err)
4156                 niu_enable_interrupts(np, 0);
4157
4158         return err;
4159 }
4160
4161 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4162                             int ldn)
4163 {
4164         struct rxdma_mailbox *mbox = rp->mbox;
4165         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4166
4167         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4168                       RX_DMA_CTL_STAT_RCRTO);
4169         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4170
4171         niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
4172                np->dev->name, (unsigned long long) stat);
4173 }
4174
4175 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4176                             int ldn)
4177 {
4178         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4179
4180         niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
4181                np->dev->name, (unsigned long long) rp->tx_cs);
4182 }
4183
4184 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4185 {
4186         struct niu_parent *parent = np->parent;
4187         u32 rx_vec, tx_vec;
4188         int i;
4189
4190         tx_vec = (v0 >> 32);
4191         rx_vec = (v0 & 0xffffffff);
4192
4193         for (i = 0; i < np->num_rx_rings; i++) {
4194                 struct rx_ring_info *rp = &np->rx_rings[i];
4195                 int ldn = LDN_RXDMA(rp->rx_channel);
4196
4197                 if (parent->ldg_map[ldn] != ldg)
4198                         continue;
4199
4200                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4201                 if (rx_vec & (1 << rp->rx_channel))
4202                         niu_rxchan_intr(np, rp, ldn);
4203         }
4204
4205         for (i = 0; i < np->num_tx_rings; i++) {
4206                 struct tx_ring_info *rp = &np->tx_rings[i];
4207                 int ldn = LDN_TXDMA(rp->tx_channel);
4208
4209                 if (parent->ldg_map[ldn] != ldg)
4210                         continue;
4211
4212                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4213                 if (tx_vec & (1 << rp->tx_channel))
4214                         niu_txchan_intr(np, rp, ldn);
4215         }
4216 }
4217
4218 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4219                               u64 v0, u64 v1, u64 v2)
4220 {
4221         if (likely(napi_schedule_prep(&lp->napi))) {
4222                 lp->v0 = v0;
4223                 lp->v1 = v1;
4224                 lp->v2 = v2;
4225                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4226                 __napi_schedule(&lp->napi);
4227         }
4228 }
4229
4230 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4231 {
4232         struct niu_ldg *lp = dev_id;
4233         struct niu *np = lp->np;
4234         int ldg = lp->ldg_num;
4235         unsigned long flags;
4236         u64 v0, v1, v2;
4237
4238         if (netif_msg_intr(np))
4239                 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
4240                        lp, ldg);
4241
4242         spin_lock_irqsave(&np->lock, flags);
4243
4244         v0 = nr64(LDSV0(ldg));
4245         v1 = nr64(LDSV1(ldg));
4246         v2 = nr64(LDSV2(ldg));
4247
4248         if (netif_msg_intr(np))
4249                 printk("v0[%llx] v1[%llx] v2[%llx]\n",
4250                        (unsigned long long) v0,
4251                        (unsigned long long) v1,
4252                        (unsigned long long) v2);
4253
4254         if (unlikely(!v0 && !v1 && !v2)) {
4255                 spin_unlock_irqrestore(&np->lock, flags);
4256                 return IRQ_NONE;
4257         }
4258
4259         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4260                 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4261                 if (err)
4262                         goto out;
4263         }
4264         if (likely(v0 & ~((u64)1 << LDN_MIF)))
4265                 niu_schedule_napi(np, lp, v0, v1, v2);
4266         else
4267                 niu_ldg_rearm(np, lp, 1);
4268 out:
4269         spin_unlock_irqrestore(&np->lock, flags);
4270
4271         return IRQ_HANDLED;
4272 }
4273
4274 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4275 {
4276         if (rp->mbox) {
4277                 np->ops->free_coherent(np->device,
4278                                        sizeof(struct rxdma_mailbox),
4279                                        rp->mbox, rp->mbox_dma);
4280                 rp->mbox = NULL;
4281         }
4282         if (rp->rcr) {
4283                 np->ops->free_coherent(np->device,
4284                                        MAX_RCR_RING_SIZE * sizeof(__le64),
4285                                        rp->rcr, rp->rcr_dma);
4286                 rp->rcr = NULL;
4287                 rp->rcr_table_size = 0;
4288                 rp->rcr_index = 0;
4289         }
4290         if (rp->rbr) {
4291                 niu_rbr_free(np, rp);
4292
4293                 np->ops->free_coherent(np->device,
4294                                        MAX_RBR_RING_SIZE * sizeof(__le32),
4295                                        rp->rbr, rp->rbr_dma);
4296                 rp->rbr = NULL;
4297                 rp->rbr_table_size = 0;
4298                 rp->rbr_index = 0;
4299         }
4300         kfree(rp->rxhash);
4301         rp->rxhash = NULL;
4302 }
4303
4304 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4305 {
4306         if (rp->mbox) {
4307                 np->ops->free_coherent(np->device,
4308                                        sizeof(struct txdma_mailbox),
4309                                        rp->mbox, rp->mbox_dma);
4310                 rp->mbox = NULL;
4311         }
4312         if (rp->descr) {
4313                 int i;
4314
4315                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4316                         if (rp->tx_buffs[i].skb)
4317                                 (void) release_tx_packet(np, rp, i);
4318                 }
4319
4320                 np->ops->free_coherent(np->device,
4321                                        MAX_TX_RING_SIZE * sizeof(__le64),
4322                                        rp->descr, rp->descr_dma);
4323                 rp->descr = NULL;
4324                 rp->pending = 0;
4325                 rp->prod = 0;
4326                 rp->cons = 0;
4327                 rp->wrap_bit = 0;
4328         }
4329 }
4330
4331 static void niu_free_channels(struct niu *np)
4332 {
4333         int i;
4334
4335         if (np->rx_rings) {
4336                 for (i = 0; i < np->num_rx_rings; i++) {
4337                         struct rx_ring_info *rp = &np->rx_rings[i];
4338
4339                         niu_free_rx_ring_info(np, rp);
4340                 }
4341                 kfree(np->rx_rings);
4342                 np->rx_rings = NULL;
4343                 np->num_rx_rings = 0;
4344         }
4345
4346         if (np->tx_rings) {
4347                 for (i = 0; i < np->num_tx_rings; i++) {
4348                         struct tx_ring_info *rp = &np->tx_rings[i];
4349
4350                         niu_free_tx_ring_info(np, rp);
4351                 }
4352                 kfree(np->tx_rings);
4353                 np->tx_rings = NULL;
4354                 np->num_tx_rings = 0;
4355         }
4356 }
4357
4358 static int niu_alloc_rx_ring_info(struct niu *np,
4359                                   struct rx_ring_info *rp)
4360 {
4361         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4362
4363         rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4364                              GFP_KERNEL);
4365         if (!rp->rxhash)
4366                 return -ENOMEM;
4367
4368         rp->mbox = np->ops->alloc_coherent(np->device,
4369                                            sizeof(struct rxdma_mailbox),
4370                                            &rp->mbox_dma, GFP_KERNEL);
4371         if (!rp->mbox)
4372                 return -ENOMEM;
4373         if ((unsigned long)rp->mbox & (64UL - 1)) {
4374                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4375                         "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
4376                 return -EINVAL;
4377         }
4378
4379         rp->rcr = np->ops->alloc_coherent(np->device,
4380                                           MAX_RCR_RING_SIZE * sizeof(__le64),
4381                                           &rp->rcr_dma, GFP_KERNEL);
4382         if (!rp->rcr)
4383                 return -ENOMEM;
4384         if ((unsigned long)rp->rcr & (64UL - 1)) {
4385                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4386                         "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
4387                 return -EINVAL;
4388         }
4389         rp->rcr_table_size = MAX_RCR_RING_SIZE;
4390         rp->rcr_index = 0;
4391
4392         rp->rbr = np->ops->alloc_coherent(np->device,
4393                                           MAX_RBR_RING_SIZE * sizeof(__le32),
4394                                           &rp->rbr_dma, GFP_KERNEL);
4395         if (!rp->rbr)
4396                 return -ENOMEM;
4397         if ((unsigned long)rp->rbr & (64UL - 1)) {
4398                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4399                         "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
4400                 return -EINVAL;
4401         }
4402         rp->rbr_table_size = MAX_RBR_RING_SIZE;
4403         rp->rbr_index = 0;
4404         rp->rbr_pending = 0;
4405
4406         return 0;
4407 }
4408
4409 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4410 {
4411         int mtu = np->dev->mtu;
4412
4413         /* These values are recommended by the HW designers for fair
4414          * utilization of DRR amongst the rings.
4415          */
4416         rp->max_burst = mtu + 32;
4417         if (rp->max_burst > 4096)
4418                 rp->max_burst = 4096;
4419 }
4420
4421 static int niu_alloc_tx_ring_info(struct niu *np,
4422                                   struct tx_ring_info *rp)
4423 {
4424         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4425
4426         rp->mbox = np->ops->alloc_coherent(np->device,
4427                                            sizeof(struct txdma_mailbox),
4428                                            &rp->mbox_dma, GFP_KERNEL);
4429         if (!rp->mbox)
4430                 return -ENOMEM;
4431         if ((unsigned long)rp->mbox & (64UL - 1)) {
4432                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4433                         "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
4434                 return -EINVAL;
4435         }
4436
4437         rp->descr = np->ops->alloc_coherent(np->device,
4438                                             MAX_TX_RING_SIZE * sizeof(__le64),
4439                                             &rp->descr_dma, GFP_KERNEL);
4440         if (!rp->descr)
4441                 return -ENOMEM;
4442         if ((unsigned long)rp->descr & (64UL - 1)) {
4443                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4444                         "TXDMA descr table %p\n", np->dev->name, rp->descr);
4445                 return -EINVAL;
4446         }
4447
4448         rp->pending = MAX_TX_RING_SIZE;
4449         rp->prod = 0;
4450         rp->cons = 0;
4451         rp->wrap_bit = 0;
4452
4453         /* XXX make these configurable... XXX */
4454         rp->mark_freq = rp->pending / 4;
4455
4456         niu_set_max_burst(np, rp);
4457
4458         return 0;
4459 }
4460
4461 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4462 {
4463         u16 bss;
4464
4465         bss = min(PAGE_SHIFT, 15);
4466
4467         rp->rbr_block_size = 1 << bss;
4468         rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4469
4470         rp->rbr_sizes[0] = 256;
4471         rp->rbr_sizes[1] = 1024;
4472         if (np->dev->mtu > ETH_DATA_LEN) {
4473                 switch (PAGE_SIZE) {
4474                 case 4 * 1024:
4475                         rp->rbr_sizes[2] = 4096;
4476                         break;
4477
4478                 default:
4479                         rp->rbr_sizes[2] = 8192;
4480                         break;
4481                 }
4482         } else {
4483                 rp->rbr_sizes[2] = 2048;
4484         }
4485         rp->rbr_sizes[3] = rp->rbr_block_size;
4486 }
4487
4488 static int niu_alloc_channels(struct niu *np)
4489 {
4490         struct niu_parent *parent = np->parent;
4491         int first_rx_channel, first_tx_channel;
4492         int i, port, err;
4493
4494         port = np->port;
4495         first_rx_channel = first_tx_channel = 0;
4496         for (i = 0; i < port; i++) {
4497                 first_rx_channel += parent->rxchan_per_port[i];
4498                 first_tx_channel += parent->txchan_per_port[i];
4499         }
4500
4501         np->num_rx_rings = parent->rxchan_per_port[port];
4502         np->num_tx_rings = parent->txchan_per_port[port];
4503
4504         np->dev->real_num_tx_queues = np->num_tx_rings;
4505
4506         np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
4507                                GFP_KERNEL);
4508         err = -ENOMEM;
4509         if (!np->rx_rings)
4510                 goto out_err;
4511
4512         for (i = 0; i < np->num_rx_rings; i++) {
4513                 struct rx_ring_info *rp = &np->rx_rings[i];
4514
4515                 rp->np = np;
4516                 rp->rx_channel = first_rx_channel + i;
4517
4518                 err = niu_alloc_rx_ring_info(np, rp);
4519                 if (err)
4520                         goto out_err;
4521
4522                 niu_size_rbr(np, rp);
4523
4524                 /* XXX better defaults, configurable, etc... XXX */
4525                 rp->nonsyn_window = 64;
4526                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4527                 rp->syn_window = 64;
4528                 rp->syn_threshold = rp->rcr_table_size - 64;
4529                 rp->rcr_pkt_threshold = 16;
4530                 rp->rcr_timeout = 8;
4531                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4532                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4533                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4534
4535                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4536                 if (err)
4537                         return err;
4538         }
4539
4540         np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
4541                                GFP_KERNEL);
4542         err = -ENOMEM;
4543         if (!np->tx_rings)
4544                 goto out_err;
4545
4546         for (i = 0; i < np->num_tx_rings; i++) {
4547                 struct tx_ring_info *rp = &np->tx_rings[i];
4548
4549                 rp->np = np;
4550                 rp->tx_channel = first_tx_channel + i;
4551
4552                 err = niu_alloc_tx_ring_info(np, rp);
4553                 if (err)
4554                         goto out_err;
4555         }
4556
4557         return 0;
4558
4559 out_err:
4560         niu_free_channels(np);
4561         return err;
4562 }
4563
4564 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4565 {
4566         int limit = 1000;
4567
4568         while (--limit > 0) {
4569                 u64 val = nr64(TX_CS(channel));
4570                 if (val & TX_CS_SNG_STATE)
4571                         return 0;
4572         }
4573         return -ENODEV;
4574 }
4575
4576 static int niu_tx_channel_stop(struct niu *np, int channel)
4577 {
4578         u64 val = nr64(TX_CS(channel));
4579
4580         val |= TX_CS_STOP_N_GO;
4581         nw64(TX_CS(channel), val);
4582
4583         return niu_tx_cs_sng_poll(np, channel);
4584 }
4585
4586 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4587 {
4588         int limit = 1000;
4589
4590         while (--limit > 0) {
4591                 u64 val = nr64(TX_CS(channel));
4592                 if (!(val & TX_CS_RST))
4593                         return 0;
4594         }
4595         return -ENODEV;
4596 }
4597
4598 static int niu_tx_channel_reset(struct niu *np, int channel)
4599 {
4600         u64 val = nr64(TX_CS(channel));
4601         int err;
4602
4603         val |= TX_CS_RST;
4604         nw64(TX_CS(channel), val);
4605
4606         err = niu_tx_cs_reset_poll(np, channel);
4607         if (!err)
4608                 nw64(TX_RING_KICK(channel), 0);
4609
4610         return err;
4611 }
4612
4613 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4614 {
4615         u64 val;
4616
4617         nw64(TX_LOG_MASK1(channel), 0);
4618         nw64(TX_LOG_VAL1(channel), 0);
4619         nw64(TX_LOG_MASK2(channel), 0);
4620         nw64(TX_LOG_VAL2(channel), 0);
4621         nw64(TX_LOG_PAGE_RELO1(channel), 0);
4622         nw64(TX_LOG_PAGE_RELO2(channel), 0);
4623         nw64(TX_LOG_PAGE_HDL(channel), 0);
4624
4625         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4626         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4627         nw64(TX_LOG_PAGE_VLD(channel), val);
4628
4629         /* XXX TXDMA 32bit mode? XXX */
4630
4631         return 0;
4632 }
4633
4634 static void niu_txc_enable_port(struct niu *np, int on)
4635 {
4636         unsigned long flags;
4637         u64 val, mask;
4638
4639         niu_lock_parent(np, flags);
4640         val = nr64(TXC_CONTROL);
4641         mask = (u64)1 << np->port;
4642         if (on) {
4643                 val |= TXC_CONTROL_ENABLE | mask;
4644         } else {
4645                 val &= ~mask;
4646                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4647                         val &= ~TXC_CONTROL_ENABLE;
4648         }
4649         nw64(TXC_CONTROL, val);
4650         niu_unlock_parent(np, flags);
4651 }
4652
4653 static void niu_txc_set_imask(struct niu *np, u64 imask)
4654 {
4655         unsigned long flags;
4656         u64 val;
4657
4658         niu_lock_parent(np, flags);
4659         val = nr64(TXC_INT_MASK);
4660         val &= ~TXC_INT_MASK_VAL(np->port);
4661         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4662         niu_unlock_parent(np, flags);
4663 }
4664
4665 static void niu_txc_port_dma_enable(struct niu *np, int on)
4666 {
4667         u64 val = 0;
4668
4669         if (on) {
4670                 int i;
4671
4672                 for (i = 0; i < np->num_tx_rings; i++)
4673                         val |= (1 << np->tx_rings[i].tx_channel);
4674         }
4675         nw64(TXC_PORT_DMA(np->port), val);
4676 }
4677
4678 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4679 {
4680         int err, channel = rp->tx_channel;
4681         u64 val, ring_len;
4682
4683         err = niu_tx_channel_stop(np, channel);
4684         if (err)
4685                 return err;
4686
4687         err = niu_tx_channel_reset(np, channel);
4688         if (err)
4689                 return err;
4690
4691         err = niu_tx_channel_lpage_init(np, channel);
4692         if (err)
4693                 return err;
4694
4695         nw64(TXC_DMA_MAX(channel), rp->max_burst);
4696         nw64(TX_ENT_MSK(channel), 0);
4697
4698         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4699                               TX_RNG_CFIG_STADDR)) {
4700                 dev_err(np->device, PFX "%s: TX ring channel %d "
4701                         "DMA addr (%llx) is not aligned.\n",
4702                         np->dev->name, channel,
4703                         (unsigned long long) rp->descr_dma);
4704                 return -EINVAL;
4705         }
4706
4707         /* The length field in TX_RNG_CFIG is measured in 64-byte
4708          * blocks.  rp->pending is the number of TX descriptors in
4709          * our ring, 8 bytes each, thus we divide by 8 bytes more
4710          * to get the proper value the chip wants.
4711          */
4712         ring_len = (rp->pending / 8);
4713
4714         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4715                rp->descr_dma);
4716         nw64(TX_RNG_CFIG(channel), val);
4717
4718         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4719             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4720                 dev_err(np->device, PFX "%s: TX ring channel %d "
4721                         "MBOX addr (%llx) is has illegal bits.\n",
4722                         np->dev->name, channel,
4723                         (unsigned long long) rp->mbox_dma);
4724                 return -EINVAL;
4725         }
4726         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4727         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4728
4729         nw64(TX_CS(channel), 0);
4730
4731         rp->last_pkt_cnt = 0;
4732
4733         return 0;
4734 }
4735
4736 static void niu_init_rdc_groups(struct niu *np)
4737 {
4738         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4739         int i, first_table_num = tp->first_table_num;
4740
4741         for (i = 0; i < tp->num_tables; i++) {
4742                 struct rdc_table *tbl = &tp->tables[i];
4743                 int this_table = first_table_num + i;
4744                 int slot;
4745
4746                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4747                         nw64(RDC_TBL(this_table, slot),
4748                              tbl->rxdma_channel[slot]);
4749         }
4750
4751         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4752 }
4753
4754 static void niu_init_drr_weight(struct niu *np)
4755 {
4756         int type = phy_decode(np->parent->port_phy, np->port);
4757         u64 val;
4758
4759         switch (type) {
4760         case PORT_TYPE_10G:
4761                 val = PT_DRR_WEIGHT_DEFAULT_10G;
4762                 break;
4763
4764         case PORT_TYPE_1G:
4765         default:
4766                 val = PT_DRR_WEIGHT_DEFAULT_1G;
4767                 break;
4768         }
4769         nw64(PT_DRR_WT(np->port), val);
4770 }
4771
4772 static int niu_init_hostinfo(struct niu *np)
4773 {
4774         struct niu_parent *parent = np->parent;
4775         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4776         int i, err, num_alt = niu_num_alt_addr(np);
4777         int first_rdc_table = tp->first_table_num;
4778
4779         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4780         if (err)
4781                 return err;
4782
4783         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4784         if (err)
4785                 return err;
4786
4787         for (i = 0; i < num_alt; i++) {
4788                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4789                 if (err)
4790                         return err;
4791         }
4792
4793         return 0;
4794 }
4795
4796 static int niu_rx_channel_reset(struct niu *np, int channel)
4797 {
4798         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4799                                       RXDMA_CFIG1_RST, 1000, 10,
4800                                       "RXDMA_CFIG1");
4801 }
4802
4803 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4804 {
4805         u64 val;
4806
4807         nw64(RX_LOG_MASK1(channel), 0);
4808         nw64(RX_LOG_VAL1(channel), 0);
4809         nw64(RX_LOG_MASK2(channel), 0);
4810         nw64(RX_LOG_VAL2(channel), 0);
4811         nw64(RX_LOG_PAGE_RELO1(channel), 0);
4812         nw64(RX_LOG_PAGE_RELO2(channel), 0);
4813         nw64(RX_LOG_PAGE_HDL(channel), 0);
4814
4815         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4816         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4817         nw64(RX_LOG_PAGE_VLD(channel), val);
4818
4819         return 0;
4820 }
4821
4822 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4823 {
4824         u64 val;
4825
4826         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4827                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4828                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4829                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4830         nw64(RDC_RED_PARA(rp->rx_channel), val);
4831 }
4832
4833 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4834 {
4835         u64 val = 0;
4836
4837         switch (rp->rbr_block_size) {
4838         case 4 * 1024:
4839                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4840                 break;
4841         case 8 * 1024:
4842                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4843                 break;
4844         case 16 * 1024:
4845                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4846                 break;
4847         case 32 * 1024:
4848                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4849                 break;
4850         default:
4851                 return -EINVAL;
4852         }
4853         val |= RBR_CFIG_B_VLD2;
4854         switch (rp->rbr_sizes[2]) {
4855         case 2 * 1024:
4856                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4857                 break;
4858         case 4 * 1024:
4859                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4860                 break;
4861         case 8 * 1024:
4862                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4863                 break;
4864         case 16 * 1024:
4865                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4866                 break;
4867
4868         default:
4869                 return -EINVAL;
4870         }
4871         val |= RBR_CFIG_B_VLD1;
4872         switch (rp->rbr_sizes[1]) {
4873         case 1 * 1024:
4874                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4875                 break;
4876         case 2 * 1024:
4877                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4878                 break;
4879         case 4 * 1024:
4880                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4881                 break;
4882         case 8 * 1024:
4883                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4884                 break;
4885
4886         default:
4887                 return -EINVAL;
4888         }
4889         val |= RBR_CFIG_B_VLD0;
4890         switch (rp->rbr_sizes[0]) {
4891         case 256:
4892                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4893                 break;
4894         case 512:
4895                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4896                 break;
4897         case 1 * 1024:
4898                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4899                 break;
4900         case 2 * 1024:
4901                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4902                 break;
4903
4904         default:
4905                 return -EINVAL;
4906         }
4907
4908         *ret = val;
4909         return 0;
4910 }
4911
4912 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4913 {
4914         u64 val = nr64(RXDMA_CFIG1(channel));
4915         int limit;
4916
4917         if (on)
4918                 val |= RXDMA_CFIG1_EN;
4919         else
4920                 val &= ~RXDMA_CFIG1_EN;
4921         nw64(RXDMA_CFIG1(channel), val);
4922
4923         limit = 1000;
4924         while (--limit > 0) {
4925                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4926                         break;
4927                 udelay(10);
4928         }
4929         if (limit <= 0)
4930                 return -ENODEV;
4931         return 0;
4932 }
4933
4934 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4935 {
4936         int err, channel = rp->rx_channel;
4937         u64 val;
4938
4939         err = niu_rx_channel_reset(np, channel);
4940         if (err)
4941                 return err;
4942
4943         err = niu_rx_channel_lpage_init(np, channel);
4944         if (err)
4945                 return err;
4946
4947         niu_rx_channel_wred_init(np, rp);
4948
4949         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4950         nw64(RX_DMA_CTL_STAT(channel),
4951              (RX_DMA_CTL_STAT_MEX |
4952               RX_DMA_CTL_STAT_RCRTHRES |
4953               RX_DMA_CTL_STAT_RCRTO |
4954               RX_DMA_CTL_STAT_RBR_EMPTY));
4955         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4956         nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
4957         nw64(RBR_CFIG_A(channel),
4958              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4959              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4960         err = niu_compute_rbr_cfig_b(rp, &val);
4961         if (err)
4962                 return err;
4963         nw64(RBR_CFIG_B(channel), val);
4964         nw64(RCRCFIG_A(channel),
4965              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4966              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4967         nw64(RCRCFIG_B(channel),
4968              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4969              RCRCFIG_B_ENTOUT |
4970              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4971
4972         err = niu_enable_rx_channel(np, channel, 1);
4973         if (err)
4974                 return err;
4975
4976         nw64(RBR_KICK(channel), rp->rbr_index);
4977
4978         val = nr64(RX_DMA_CTL_STAT(channel));
4979         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4980         nw64(RX_DMA_CTL_STAT(channel), val);
4981
4982         return 0;
4983 }
4984
4985 static int niu_init_rx_channels(struct niu *np)
4986 {
4987         unsigned long flags;
4988         u64 seed = jiffies_64;
4989         int err, i;
4990
4991         niu_lock_parent(np, flags);
4992         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4993         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4994         niu_unlock_parent(np, flags);
4995
4996         /* XXX RXDMA 32bit mode? XXX */
4997
4998         niu_init_rdc_groups(np);
4999         niu_init_drr_weight(np);
5000
5001         err = niu_init_hostinfo(np);
5002         if (err)
5003                 return err;
5004
5005         for (i = 0; i < np->num_rx_rings; i++) {
5006                 struct rx_ring_info *rp = &np->rx_rings[i];
5007
5008                 err = niu_init_one_rx_channel(np, rp);
5009                 if (err)
5010                         return err;
5011         }
5012
5013         return 0;
5014 }
5015
5016 static int niu_set_ip_frag_rule(struct niu *np)
5017 {
5018         struct niu_parent *parent = np->parent;
5019         struct niu_classifier *cp = &np->clas;
5020         struct niu_tcam_entry *tp;
5021         int index, err;
5022
5023         index = cp->tcam_top;
5024         tp = &parent->tcam[index];
5025
5026         /* Note that the noport bit is the same in both ipv4 and
5027          * ipv6 format TCAM entries.
5028          */
5029         memset(tp, 0, sizeof(*tp));
5030         tp->key[1] = TCAM_V4KEY1_NOPORT;
5031         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5032         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5033                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5034         err = tcam_write(np, index, tp->key, tp->key_mask);
5035         if (err)
5036                 return err;
5037         err = tcam_assoc_write(np, index, tp->assoc_data);
5038         if (err)
5039                 return err;
5040         tp->valid = 1;
5041         cp->tcam_valid_entries++;
5042
5043         return 0;
5044 }
5045
5046 static int niu_init_classifier_hw(struct niu *np)
5047 {
5048         struct niu_parent *parent = np->parent;
5049         struct niu_classifier *cp = &np->clas;
5050         int i, err;
5051
5052         nw64(H1POLY, cp->h1_init);
5053         nw64(H2POLY, cp->h2_init);
5054
5055         err = niu_init_hostinfo(np);
5056         if (err)
5057                 return err;
5058
5059         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5060                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5061
5062                 vlan_tbl_write(np, i, np->port,
5063                                vp->vlan_pref, vp->rdc_num);
5064         }
5065
5066         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5067                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5068
5069                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5070                                                 ap->rdc_num, ap->mac_pref);
5071                 if (err)
5072                         return err;
5073         }
5074
5075         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5076                 int index = i - CLASS_CODE_USER_PROG1;
5077
5078                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5079                 if (err)
5080                         return err;
5081                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5082                 if (err)
5083                         return err;
5084         }
5085
5086         err = niu_set_ip_frag_rule(np);
5087         if (err)
5088                 return err;
5089
5090         tcam_enable(np, 1);
5091
5092         return 0;
5093 }
5094
5095 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5096 {
5097         nw64(ZCP_RAM_DATA0, data[0]);
5098         nw64(ZCP_RAM_DATA1, data[1]);
5099         nw64(ZCP_RAM_DATA2, data[2]);
5100         nw64(ZCP_RAM_DATA3, data[3]);
5101         nw64(ZCP_RAM_DATA4, data[4]);
5102         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5103         nw64(ZCP_RAM_ACC,
5104              (ZCP_RAM_ACC_WRITE |
5105               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5106               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5107
5108         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5109                                    1000, 100);
5110 }
5111
5112 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5113 {
5114         int err;
5115
5116         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5117                                   1000, 100);
5118         if (err) {
5119                 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
5120                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
5121                         (unsigned long long) nr64(ZCP_RAM_ACC));
5122                 return err;
5123         }
5124
5125         nw64(ZCP_RAM_ACC,
5126              (ZCP_RAM_ACC_READ |
5127               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5128               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5129
5130         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5131                                   1000, 100);
5132         if (err) {
5133                 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
5134                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
5135                         (unsigned long long) nr64(ZCP_RAM_ACC));
5136                 return err;
5137         }
5138
5139         data[0] = nr64(ZCP_RAM_DATA0);
5140         data[1] = nr64(ZCP_RAM_DATA1);
5141         data[2] = nr64(ZCP_RAM_DATA2);
5142         data[3] = nr64(ZCP_RAM_DATA3);
5143         data[4] = nr64(ZCP_RAM_DATA4);
5144
5145         return 0;
5146 }
5147
5148 static void niu_zcp_cfifo_reset(struct niu *np)
5149 {
5150         u64 val = nr64(RESET_CFIFO);
5151
5152         val |= RESET_CFIFO_RST(np->port);
5153         nw64(RESET_CFIFO, val);
5154         udelay(10);
5155
5156         val &= ~RESET_CFIFO_RST(np->port);
5157         nw64(RESET_CFIFO, val);
5158 }
5159
5160 static int niu_init_zcp(struct niu *np)
5161 {
5162         u64 data[5], rbuf[5];
5163         int i, max, err;
5164
5165         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5166                 if (np->port == 0 || np->port == 1)
5167                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
5168                 else
5169                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
5170         } else
5171                 max = NIU_CFIFO_ENTRIES;
5172
5173         data[0] = 0;
5174         data[1] = 0;
5175         data[2] = 0;
5176         data[3] = 0;
5177         data[4] = 0;
5178
5179         for (i = 0; i < max; i++) {
5180                 err = niu_zcp_write(np, i, data);
5181                 if (err)
5182                         return err;
5183                 err = niu_zcp_read(np, i, rbuf);
5184                 if (err)
5185                         return err;
5186         }
5187
5188         niu_zcp_cfifo_reset(np);
5189         nw64(CFIFO_ECC(np->port), 0);
5190         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5191         (void) nr64(ZCP_INT_STAT);
5192         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5193
5194         return 0;
5195 }
5196
5197 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5198 {
5199         u64 val = nr64_ipp(IPP_CFIG);
5200
5201         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5202         nw64_ipp(IPP_DFIFO_WR_PTR, index);
5203         nw64_ipp(IPP_DFIFO_WR0, data[0]);
5204         nw64_ipp(IPP_DFIFO_WR1, data[1]);
5205         nw64_ipp(IPP_DFIFO_WR2, data[2]);
5206         nw64_ipp(IPP_DFIFO_WR3, data[3]);
5207         nw64_ipp(IPP_DFIFO_WR4, data[4]);
5208         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5209 }
5210
5211 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5212 {
5213         nw64_ipp(IPP_DFIFO_RD_PTR, index);
5214         data[0] = nr64_ipp(IPP_DFIFO_RD0);
5215         data[1] = nr64_ipp(IPP_DFIFO_RD1);
5216         data[2] = nr64_ipp(IPP_DFIFO_RD2);
5217         data[3] = nr64_ipp(IPP_DFIFO_RD3);
5218         data[4] = nr64_ipp(IPP_DFIFO_RD4);
5219 }
5220
5221 static int niu_ipp_reset(struct niu *np)
5222 {
5223         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5224                                           1000, 100, "IPP_CFIG");
5225 }
5226
5227 static int niu_init_ipp(struct niu *np)
5228 {
5229         u64 data[5], rbuf[5], val;
5230         int i, max, err;
5231
5232         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5233                 if (np->port == 0 || np->port == 1)
5234                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
5235                 else
5236                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
5237         } else
5238                 max = NIU_DFIFO_ENTRIES;
5239
5240         data[0] = 0;
5241         data[1] = 0;
5242         data[2] = 0;
5243         data[3] = 0;
5244         data[4] = 0;
5245
5246         for (i = 0; i < max; i++) {
5247                 niu_ipp_write(np, i, data);
5248                 niu_ipp_read(np, i, rbuf);
5249         }
5250
5251         (void) nr64_ipp(IPP_INT_STAT);
5252         (void) nr64_ipp(IPP_INT_STAT);
5253
5254         err = niu_ipp_reset(np);
5255         if (err)
5256                 return err;
5257
5258         (void) nr64_ipp(IPP_PKT_DIS);
5259         (void) nr64_ipp(IPP_BAD_CS_CNT);
5260         (void) nr64_ipp(IPP_ECC);
5261
5262         (void) nr64_ipp(IPP_INT_STAT);
5263
5264         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5265
5266         val = nr64_ipp(IPP_CFIG);
5267         val &= ~IPP_CFIG_IP_MAX_PKT;
5268         val |= (IPP_CFIG_IPP_ENABLE |
5269                 IPP_CFIG_DFIFO_ECC_EN |
5270                 IPP_CFIG_DROP_BAD_CRC |
5271                 IPP_CFIG_CKSUM_EN |
5272                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5273         nw64_ipp(IPP_CFIG, val);
5274
5275         return 0;
5276 }
5277
5278 static void niu_handle_led(struct niu *np, int status)
5279 {
5280         u64 val;
5281         val = nr64_mac(XMAC_CONFIG);
5282
5283         if ((np->flags & NIU_FLAGS_10G) != 0 &&
5284             (np->flags & NIU_FLAGS_FIBER) != 0) {
5285                 if (status) {
5286                         val |= XMAC_CONFIG_LED_POLARITY;
5287                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
5288                 } else {
5289                         val |= XMAC_CONFIG_FORCE_LED_ON;
5290                         val &= ~XMAC_CONFIG_LED_POLARITY;
5291                 }
5292         }
5293
5294         nw64_mac(XMAC_CONFIG, val);
5295 }
5296
5297 static void niu_init_xif_xmac(struct niu *np)
5298 {
5299         struct niu_link_config *lp = &np->link_config;
5300         u64 val;
5301
5302         if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5303                 val = nr64(MIF_CONFIG);
5304                 val |= MIF_CONFIG_ATCA_GE;
5305                 nw64(MIF_CONFIG, val);
5306         }
5307
5308         val = nr64_mac(XMAC_CONFIG);
5309         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5310
5311         val |= XMAC_CONFIG_TX_OUTPUT_EN;
5312
5313         if (lp->loopback_mode == LOOPBACK_MAC) {
5314                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5315                 val |= XMAC_CONFIG_LOOPBACK;
5316         } else {
5317                 val &= ~XMAC_CONFIG_LOOPBACK;
5318         }
5319
5320         if (np->flags & NIU_FLAGS_10G) {
5321                 val &= ~XMAC_CONFIG_LFS_DISABLE;
5322         } else {
5323                 val |= XMAC_CONFIG_LFS_DISABLE;
5324                 if (!(np->flags & NIU_FLAGS_FIBER) &&
5325                     !(np->flags & NIU_FLAGS_XCVR_SERDES))
5326                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
5327                 else
5328                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5329         }
5330
5331         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5332
5333         if (lp->active_speed == SPEED_100)
5334                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5335         else
5336                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5337
5338         nw64_mac(XMAC_CONFIG, val);
5339
5340         val = nr64_mac(XMAC_CONFIG);
5341         val &= ~XMAC_CONFIG_MODE_MASK;
5342         if (np->flags & NIU_FLAGS_10G) {
5343                 val |= XMAC_CONFIG_MODE_XGMII;
5344         } else {
5345                 if (lp->active_speed == SPEED_1000)
5346                         val |= XMAC_CONFIG_MODE_GMII;
5347                 else
5348                         val |= XMAC_CONFIG_MODE_MII;
5349         }
5350
5351         nw64_mac(XMAC_CONFIG, val);
5352 }
5353
5354 static void niu_init_xif_bmac(struct niu *np)
5355 {
5356         struct niu_link_config *lp = &np->link_config;
5357         u64 val;
5358
5359         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5360
5361         if (lp->loopback_mode == LOOPBACK_MAC)
5362                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5363         else
5364                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5365
5366         if (lp->active_speed == SPEED_1000)
5367                 val |= BMAC_XIF_CONFIG_GMII_MODE;
5368         else
5369                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5370
5371         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5372                  BMAC_XIF_CONFIG_LED_POLARITY);
5373
5374         if (!(np->flags & NIU_FLAGS_10G) &&
5375             !(np->flags & NIU_FLAGS_FIBER) &&
5376             lp->active_speed == SPEED_100)
5377                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5378         else
5379                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5380
5381         nw64_mac(BMAC_XIF_CONFIG, val);
5382 }
5383
5384 static void niu_init_xif(struct niu *np)
5385 {
5386         if (np->flags & NIU_FLAGS_XMAC)
5387                 niu_init_xif_xmac(np);
5388         else
5389                 niu_init_xif_bmac(np);
5390 }
5391
5392 static void niu_pcs_mii_reset(struct niu *np)
5393 {
5394         int limit = 1000;
5395         u64 val = nr64_pcs(PCS_MII_CTL);
5396         val |= PCS_MII_CTL_RST;
5397         nw64_pcs(PCS_MII_CTL, val);
5398         while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5399                 udelay(100);
5400                 val = nr64_pcs(PCS_MII_CTL);
5401         }
5402 }
5403
5404 static void niu_xpcs_reset(struct niu *np)
5405 {
5406         int limit = 1000;
5407         u64 val = nr64_xpcs(XPCS_CONTROL1);
5408         val |= XPCS_CONTROL1_RESET;
5409         nw64_xpcs(XPCS_CONTROL1, val);
5410         while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5411                 udelay(100);
5412                 val = nr64_xpcs(XPCS_CONTROL1);
5413         }
5414 }
5415
5416 static int niu_init_pcs(struct niu *np)
5417 {
5418         struct niu_link_config *lp = &np->link_config;
5419         u64 val;
5420
5421         switch (np->flags & (NIU_FLAGS_10G |
5422                              NIU_FLAGS_FIBER |
5423                              NIU_FLAGS_XCVR_SERDES)) {
5424         case NIU_FLAGS_FIBER:
5425                 /* 1G fiber */
5426                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5427                 nw64_pcs(PCS_DPATH_MODE, 0);
5428                 niu_pcs_mii_reset(np);
5429                 break;
5430
5431         case NIU_FLAGS_10G:
5432         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5433         case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5434                 /* 10G SERDES */
5435                 if (!(np->flags & NIU_FLAGS_XMAC))
5436                         return -EINVAL;
5437
5438                 /* 10G copper or fiber */
5439                 val = nr64_mac(XMAC_CONFIG);
5440                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5441                 nw64_mac(XMAC_CONFIG, val);
5442
5443                 niu_xpcs_reset(np);
5444
5445                 val = nr64_xpcs(XPCS_CONTROL1);
5446                 if (lp->loopback_mode == LOOPBACK_PHY)
5447                         val |= XPCS_CONTROL1_LOOPBACK;
5448                 else
5449                         val &= ~XPCS_CONTROL1_LOOPBACK;
5450                 nw64_xpcs(XPCS_CONTROL1, val);
5451
5452                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5453                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5454                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5455                 break;
5456
5457
5458         case NIU_FLAGS_XCVR_SERDES:
5459                 /* 1G SERDES */
5460                 niu_pcs_mii_reset(np);
5461                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5462                 nw64_pcs(PCS_DPATH_MODE, 0);
5463                 break;
5464
5465         case 0:
5466                 /* 1G copper */
5467         case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5468                 /* 1G RGMII FIBER */
5469                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5470                 niu_pcs_mii_reset(np);
5471                 break;
5472
5473         default:
5474                 return -EINVAL;
5475         }
5476
5477         return 0;
5478 }
5479
5480 static int niu_reset_tx_xmac(struct niu *np)
5481 {
5482         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5483                                           (XTXMAC_SW_RST_REG_RS |
5484                                            XTXMAC_SW_RST_SOFT_RST),
5485                                           1000, 100, "XTXMAC_SW_RST");
5486 }
5487
5488 static int niu_reset_tx_bmac(struct niu *np)
5489 {
5490         int limit;
5491
5492         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5493         limit = 1000;
5494         while (--limit >= 0) {
5495                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5496                         break;
5497                 udelay(100);
5498         }
5499         if (limit < 0) {
5500                 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
5501                         "BTXMAC_SW_RST[%llx]\n",
5502                         np->port,
5503                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5504                 return -ENODEV;
5505         }
5506
5507         return 0;
5508 }
5509
5510 static int niu_reset_tx_mac(struct niu *np)
5511 {
5512         if (np->flags & NIU_FLAGS_XMAC)
5513                 return niu_reset_tx_xmac(np);
5514         else
5515                 return niu_reset_tx_bmac(np);
5516 }
5517
5518 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5519 {
5520         u64 val;
5521
5522         val = nr64_mac(XMAC_MIN);
5523         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5524                  XMAC_MIN_RX_MIN_PKT_SIZE);
5525         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5526         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5527         nw64_mac(XMAC_MIN, val);
5528
5529         nw64_mac(XMAC_MAX, max);
5530
5531         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5532
5533         val = nr64_mac(XMAC_IPG);
5534         if (np->flags & NIU_FLAGS_10G) {
5535                 val &= ~XMAC_IPG_IPG_XGMII;
5536                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5537         } else {
5538                 val &= ~XMAC_IPG_IPG_MII_GMII;
5539                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5540         }
5541         nw64_mac(XMAC_IPG, val);
5542
5543         val = nr64_mac(XMAC_CONFIG);
5544         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5545                  XMAC_CONFIG_STRETCH_MODE |
5546                  XMAC_CONFIG_VAR_MIN_IPG_EN |
5547                  XMAC_CONFIG_TX_ENABLE);
5548         nw64_mac(XMAC_CONFIG, val);
5549
5550         nw64_mac(TXMAC_FRM_CNT, 0);
5551         nw64_mac(TXMAC_BYTE_CNT, 0);
5552 }
5553
5554 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5555 {
5556         u64 val;
5557
5558         nw64_mac(BMAC_MIN_FRAME, min);
5559         nw64_mac(BMAC_MAX_FRAME, max);
5560
5561         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5562         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5563         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5564
5565         val = nr64_mac(BTXMAC_CONFIG);
5566         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5567                  BTXMAC_CONFIG_ENABLE);
5568         nw64_mac(BTXMAC_CONFIG, val);
5569 }
5570
5571 static void niu_init_tx_mac(struct niu *np)
5572 {
5573         u64 min, max;
5574
5575         min = 64;
5576         if (np->dev->mtu > ETH_DATA_LEN)
5577                 max = 9216;
5578         else
5579                 max = 1522;
5580
5581         /* The XMAC_MIN register only accepts values for TX min which
5582          * have the low 3 bits cleared.
5583          */
5584         BUILD_BUG_ON(min & 0x7);
5585
5586         if (np->flags & NIU_FLAGS_XMAC)
5587                 niu_init_tx_xmac(np, min, max);
5588         else
5589                 niu_init_tx_bmac(np, min, max);
5590 }
5591
5592 static int niu_reset_rx_xmac(struct niu *np)
5593 {
5594         int limit;
5595
5596         nw64_mac(XRXMAC_SW_RST,
5597                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5598         limit = 1000;
5599         while (--limit >= 0) {
5600                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5601                                                  XRXMAC_SW_RST_SOFT_RST)))
5602                     break;
5603                 udelay(100);
5604         }
5605         if (limit < 0) {
5606                 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
5607                         "XRXMAC_SW_RST[%llx]\n",
5608                         np->port,
5609                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5610                 return -ENODEV;
5611         }
5612
5613         return 0;
5614 }
5615
5616 static int niu_reset_rx_bmac(struct niu *np)
5617 {
5618         int limit;
5619
5620         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5621         limit = 1000;
5622         while (--limit >= 0) {
5623                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5624                         break;
5625                 udelay(100);
5626         }
5627         if (limit < 0) {
5628                 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
5629                         "BRXMAC_SW_RST[%llx]\n",
5630                         np->port,
5631                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5632                 return -ENODEV;
5633         }
5634
5635         return 0;
5636 }
5637
5638 static int niu_reset_rx_mac(struct niu *np)
5639 {
5640         if (np->flags & NIU_FLAGS_XMAC)
5641                 return niu_reset_rx_xmac(np);
5642         else
5643                 return niu_reset_rx_bmac(np);
5644 }
5645
5646 static void niu_init_rx_xmac(struct niu *np)
5647 {
5648         struct niu_parent *parent = np->parent;
5649         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5650         int first_rdc_table = tp->first_table_num;
5651         unsigned long i;
5652         u64 val;
5653
5654         nw64_mac(XMAC_ADD_FILT0, 0);
5655         nw64_mac(XMAC_ADD_FILT1, 0);
5656         nw64_mac(XMAC_ADD_FILT2, 0);
5657         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5658         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5659         for (i = 0; i < MAC_NUM_HASH; i++)
5660                 nw64_mac(XMAC_HASH_TBL(i), 0);
5661         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5662         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5663         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5664
5665         val = nr64_mac(XMAC_CONFIG);
5666         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5667                  XMAC_CONFIG_PROMISCUOUS |
5668                  XMAC_CONFIG_PROMISC_GROUP |
5669                  XMAC_CONFIG_ERR_CHK_DIS |
5670                  XMAC_CONFIG_RX_CRC_CHK_DIS |
5671                  XMAC_CONFIG_RESERVED_MULTICAST |
5672                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
5673                  XMAC_CONFIG_ADDR_FILTER_EN |
5674                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
5675                  XMAC_CONFIG_STRIP_CRC |
5676                  XMAC_CONFIG_PASS_FLOW_CTRL |
5677                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5678         val |= (XMAC_CONFIG_HASH_FILTER_EN);
5679         nw64_mac(XMAC_CONFIG, val);
5680
5681         nw64_mac(RXMAC_BT_CNT, 0);
5682         nw64_mac(RXMAC_BC_FRM_CNT, 0);
5683         nw64_mac(RXMAC_MC_FRM_CNT, 0);
5684         nw64_mac(RXMAC_FRAG_CNT, 0);
5685         nw64_mac(RXMAC_HIST_CNT1, 0);
5686         nw64_mac(RXMAC_HIST_CNT2, 0);
5687         nw64_mac(RXMAC_HIST_CNT3, 0);
5688         nw64_mac(RXMAC_HIST_CNT4, 0);
5689         nw64_mac(RXMAC_HIST_CNT5, 0);
5690         nw64_mac(RXMAC_HIST_CNT6, 0);
5691         nw64_mac(RXMAC_HIST_CNT7, 0);
5692         nw64_mac(RXMAC_MPSZER_CNT, 0);
5693         nw64_mac(RXMAC_CRC_ER_CNT, 0);
5694         nw64_mac(RXMAC_CD_VIO_CNT, 0);
5695         nw64_mac(LINK_FAULT_CNT, 0);
5696 }
5697
5698 static void niu_init_rx_bmac(struct niu *np)
5699 {
5700         struct niu_parent *parent = np->parent;
5701         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5702         int first_rdc_table = tp->first_table_num;
5703         unsigned long i;
5704         u64 val;
5705
5706         nw64_mac(BMAC_ADD_FILT0, 0);
5707         nw64_mac(BMAC_ADD_FILT1, 0);
5708         nw64_mac(BMAC_ADD_FILT2, 0);
5709         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5710         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5711         for (i = 0; i < MAC_NUM_HASH; i++)
5712                 nw64_mac(BMAC_HASH_TBL(i), 0);
5713         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5714         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5715         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5716
5717         val = nr64_mac(BRXMAC_CONFIG);
5718         val &= ~(BRXMAC_CONFIG_ENABLE |
5719                  BRXMAC_CONFIG_STRIP_PAD |
5720                  BRXMAC_CONFIG_STRIP_FCS |
5721                  BRXMAC_CONFIG_PROMISC |
5722                  BRXMAC_CONFIG_PROMISC_GRP |
5723                  BRXMAC_CONFIG_ADDR_FILT_EN |
5724                  BRXMAC_CONFIG_DISCARD_DIS);
5725         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5726         nw64_mac(BRXMAC_CONFIG, val);
5727
5728         val = nr64_mac(BMAC_ADDR_CMPEN);
5729         val |= BMAC_ADDR_CMPEN_EN0;
5730         nw64_mac(BMAC_ADDR_CMPEN, val);
5731 }
5732
5733 static void niu_init_rx_mac(struct niu *np)
5734 {
5735         niu_set_primary_mac(np, np->dev->dev_addr);
5736
5737         if (np->flags & NIU_FLAGS_XMAC)
5738                 niu_init_rx_xmac(np);
5739         else
5740                 niu_init_rx_bmac(np);
5741 }
5742
5743 static void niu_enable_tx_xmac(struct niu *np, int on)
5744 {
5745         u64 val = nr64_mac(XMAC_CONFIG);
5746
5747         if (on)
5748                 val |= XMAC_CONFIG_TX_ENABLE;
5749         else
5750                 val &= ~XMAC_CONFIG_TX_ENABLE;
5751         nw64_mac(XMAC_CONFIG, val);
5752 }
5753
5754 static void niu_enable_tx_bmac(struct niu *np, int on)
5755 {
5756         u64 val = nr64_mac(BTXMAC_CONFIG);
5757
5758         if (on)
5759                 val |= BTXMAC_CONFIG_ENABLE;
5760         else
5761                 val &= ~BTXMAC_CONFIG_ENABLE;
5762         nw64_mac(BTXMAC_CONFIG, val);
5763 }
5764
5765 static void niu_enable_tx_mac(struct niu *np, int on)
5766 {
5767         if (np->flags & NIU_FLAGS_XMAC)
5768                 niu_enable_tx_xmac(np, on);
5769         else
5770                 niu_enable_tx_bmac(np, on);
5771 }
5772
5773 static void niu_enable_rx_xmac(struct niu *np, int on)
5774 {
5775         u64 val = nr64_mac(XMAC_CONFIG);
5776
5777         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5778                  XMAC_CONFIG_PROMISCUOUS);
5779
5780         if (np->flags & NIU_FLAGS_MCAST)
5781                 val |= XMAC_CONFIG_HASH_FILTER_EN;
5782         if (np->flags & NIU_FLAGS_PROMISC)
5783                 val |= XMAC_CONFIG_PROMISCUOUS;
5784
5785         if (on)
5786                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5787         else
5788                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5789         nw64_mac(XMAC_CONFIG, val);
5790 }
5791
5792 static void niu_enable_rx_bmac(struct niu *np, int on)
5793 {
5794         u64 val = nr64_mac(BRXMAC_CONFIG);
5795
5796         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5797                  BRXMAC_CONFIG_PROMISC);
5798
5799         if (np->flags & NIU_FLAGS_MCAST)
5800                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5801         if (np->flags & NIU_FLAGS_PROMISC)
5802                 val |= BRXMAC_CONFIG_PROMISC;
5803
5804         if (on)
5805                 val |= BRXMAC_CONFIG_ENABLE;
5806         else
5807                 val &= ~BRXMAC_CONFIG_ENABLE;
5808         nw64_mac(BRXMAC_CONFIG, val);
5809 }
5810
5811 static void niu_enable_rx_mac(struct niu *np, int on)
5812 {
5813         if (np->flags & NIU_FLAGS_XMAC)
5814                 niu_enable_rx_xmac(np, on);
5815         else
5816                 niu_enable_rx_bmac(np, on);
5817 }
5818
5819 static int niu_init_mac(struct niu *np)
5820 {
5821         int err;
5822
5823         niu_init_xif(np);
5824         err = niu_init_pcs(np);
5825         if (err)
5826                 return err;
5827
5828         err = niu_reset_tx_mac(np);
5829         if (err)
5830                 return err;
5831         niu_init_tx_mac(np);
5832         err = niu_reset_rx_mac(np);
5833         if (err)
5834                 return err;
5835         niu_init_rx_mac(np);
5836
5837         /* This looks hookey but the RX MAC reset we just did will
5838          * undo some of the state we setup in niu_init_tx_mac() so we
5839          * have to call it again.  In particular, the RX MAC reset will
5840          * set the XMAC_MAX register back to it's default value.
5841          */
5842         niu_init_tx_mac(np);
5843         niu_enable_tx_mac(np, 1);
5844
5845         niu_enable_rx_mac(np, 1);
5846
5847         return 0;
5848 }
5849
5850 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5851 {
5852         (void) niu_tx_channel_stop(np, rp->tx_channel);
5853 }
5854
5855 static void niu_stop_tx_channels(struct niu *np)
5856 {
5857         int i;
5858
5859         for (i = 0; i < np->num_tx_rings; i++) {
5860                 struct tx_ring_info *rp = &np->tx_rings[i];
5861
5862                 niu_stop_one_tx_channel(np, rp);
5863         }
5864 }
5865
5866 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5867 {
5868         (void) niu_tx_channel_reset(np, rp->tx_channel);
5869 }
5870
5871 static void niu_reset_tx_channels(struct niu *np)
5872 {
5873         int i;
5874
5875         for (i = 0; i < np->num_tx_rings; i++) {
5876                 struct tx_ring_info *rp = &np->tx_rings[i];
5877
5878                 niu_reset_one_tx_channel(np, rp);
5879         }
5880 }
5881
5882 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5883 {
5884         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5885 }
5886
5887 static void niu_stop_rx_channels(struct niu *np)
5888 {
5889         int i;
5890
5891         for (i = 0; i < np->num_rx_rings; i++) {
5892                 struct rx_ring_info *rp = &np->rx_rings[i];
5893
5894                 niu_stop_one_rx_channel(np, rp);
5895         }
5896 }
5897
5898 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5899 {
5900         int channel = rp->rx_channel;
5901
5902         (void) niu_rx_channel_reset(np, channel);
5903         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5904         nw64(RX_DMA_CTL_STAT(channel), 0);
5905         (void) niu_enable_rx_channel(np, channel, 0);
5906 }
5907
5908 static void niu_reset_rx_channels(struct niu *np)
5909 {
5910         int i;
5911
5912         for (i = 0; i < np->num_rx_rings; i++) {
5913                 struct rx_ring_info *rp = &np->rx_rings[i];
5914
5915                 niu_reset_one_rx_channel(np, rp);
5916         }
5917 }
5918
5919 static void niu_disable_ipp(struct niu *np)
5920 {
5921         u64 rd, wr, val;
5922         int limit;
5923
5924         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5925         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5926         limit = 100;
5927         while (--limit >= 0 && (rd != wr)) {
5928                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5929                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5930         }
5931         if (limit < 0 &&
5932             (rd != 0 && wr != 1)) {
5933                 dev_err(np->device, PFX "%s: IPP would not quiesce, "
5934                         "rd_ptr[%llx] wr_ptr[%llx]\n",
5935                         np->dev->name,
5936                         (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
5937                         (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
5938         }
5939
5940         val = nr64_ipp(IPP_CFIG);
5941         val &= ~(IPP_CFIG_IPP_ENABLE |
5942                  IPP_CFIG_DFIFO_ECC_EN |
5943                  IPP_CFIG_DROP_BAD_CRC |
5944                  IPP_CFIG_CKSUM_EN);
5945         nw64_ipp(IPP_CFIG, val);
5946
5947         (void) niu_ipp_reset(np);
5948 }
5949
5950 static int niu_init_hw(struct niu *np)
5951 {
5952         int i, err;
5953
5954         niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
5955         niu_txc_enable_port(np, 1);
5956         niu_txc_port_dma_enable(np, 1);
5957         niu_txc_set_imask(np, 0);
5958
5959         niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
5960         for (i = 0; i < np->num_tx_rings; i++) {
5961                 struct tx_ring_info *rp = &np->tx_rings[i];
5962
5963                 err = niu_init_one_tx_channel(np, rp);
5964                 if (err)
5965                         return err;
5966         }
5967
5968         niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
5969         err = niu_init_rx_channels(np);
5970         if (err)
5971                 goto out_uninit_tx_channels;
5972
5973         niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
5974         err = niu_init_classifier_hw(np);
5975         if (err)
5976                 goto out_uninit_rx_channels;
5977
5978         niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
5979         err = niu_init_zcp(np);
5980         if (err)
5981                 goto out_uninit_rx_channels;
5982
5983         niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
5984         err = niu_init_ipp(np);
5985         if (err)
5986                 goto out_uninit_rx_channels;
5987
5988         niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
5989         err = niu_init_mac(np);
5990         if (err)
5991                 goto out_uninit_ipp;
5992
5993         return 0;
5994
5995 out_uninit_ipp:
5996         niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
5997         niu_disable_ipp(np);
5998
5999 out_uninit_rx_channels:
6000         niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
6001         niu_stop_rx_channels(np);
6002         niu_reset_rx_channels(np);
6003
6004 out_uninit_tx_channels:
6005         niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
6006         niu_stop_tx_channels(np);
6007         niu_reset_tx_channels(np);
6008
6009         return err;
6010 }
6011
6012 static void niu_stop_hw(struct niu *np)
6013 {
6014         niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
6015         niu_enable_interrupts(np, 0);
6016
6017         niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
6018         niu_enable_rx_mac(np, 0);
6019
6020         niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
6021         niu_disable_ipp(np);
6022
6023         niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
6024         niu_stop_tx_channels(np);
6025
6026         niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
6027         niu_stop_rx_channels(np);
6028
6029         niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
6030         niu_reset_tx_channels(np);
6031
6032         niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
6033         niu_reset_rx_channels(np);
6034 }
6035
6036 static void niu_set_irq_name(struct niu *np)
6037 {
6038         int port = np->port;
6039         int i, j = 1;
6040
6041         sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6042
6043         if (port == 0) {
6044                 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6045                 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6046                 j = 3;
6047         }
6048
6049         for (i = 0; i < np->num_ldg - j; i++) {
6050                 if (i < np->num_rx_rings)
6051                         sprintf(np->irq_name[i+j], "%s-rx-%d",
6052                                 np->dev->name, i);
6053                 else if (i < np->num_tx_rings + np->num_rx_rings)
6054                         sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6055                                 i - np->num_rx_rings);
6056         }
6057 }
6058
6059 static int niu_request_irq(struct niu *np)
6060 {
6061         int i, j, err;
6062
6063         niu_set_irq_name(np);
6064
6065         err = 0;
6066         for (i = 0; i < np->num_ldg; i++) {
6067                 struct niu_ldg *lp = &np->ldg[i];
6068
6069                 err = request_irq(lp->irq, niu_interrupt,
6070                                   IRQF_SHARED | IRQF_SAMPLE_RANDOM,
6071                                   np->irq_name[i], lp);
6072                 if (err)
6073                         goto out_free_irqs;
6074
6075         }
6076
6077         return 0;
6078
6079 out_free_irqs:
6080         for (j = 0; j < i; j++) {
6081                 struct niu_ldg *lp = &np->ldg[j];
6082
6083                 free_irq(lp->irq, lp);
6084         }
6085         return err;
6086 }
6087
6088 static void niu_free_irq(struct niu *np)
6089 {
6090         int i;
6091
6092         for (i = 0; i < np->num_ldg; i++) {
6093                 struct niu_ldg *lp = &np->ldg[i];
6094
6095                 free_irq(lp->irq, lp);
6096         }
6097 }
6098
6099 static void niu_enable_napi(struct niu *np)
6100 {
6101         int i;
6102
6103         for (i = 0; i < np->num_ldg; i++)
6104                 napi_enable(&np->ldg[i].napi);
6105 }
6106
6107 static void niu_disable_napi(struct niu *np)
6108 {
6109         int i;
6110
6111         for (i = 0; i < np->num_ldg; i++)
6112                 napi_disable(&np->ldg[i].napi);
6113 }
6114
6115 static int niu_open(struct net_device *dev)
6116 {
6117         struct niu *np = netdev_priv(dev);
6118         int err;
6119
6120         netif_carrier_off(dev);
6121
6122         err = niu_alloc_channels(np);
6123         if (err)
6124                 goto out_err;
6125
6126         err = niu_enable_interrupts(np, 0);
6127         if (err)
6128                 goto out_free_channels;
6129
6130         err = niu_request_irq(np);
6131         if (err)
6132                 goto out_free_channels;
6133
6134         niu_enable_napi(np);
6135
6136         spin_lock_irq(&np->lock);
6137
6138         err = niu_init_hw(np);
6139         if (!err) {
6140                 init_timer(&np->timer);
6141                 np->timer.expires = jiffies + HZ;
6142                 np->timer.data = (unsigned long) np;
6143                 np->timer.function = niu_timer;
6144
6145                 err = niu_enable_interrupts(np, 1);
6146                 if (err)
6147                         niu_stop_hw(np);
6148         }
6149
6150         spin_unlock_irq(&np->lock);
6151
6152         if (err) {
6153                 niu_disable_napi(np);
6154                 goto out_free_irq;
6155         }
6156
6157         netif_tx_start_all_queues(dev);
6158
6159         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6160                 netif_carrier_on(dev);
6161
6162         add_timer(&np->timer);
6163
6164         return 0;
6165
6166 out_free_irq:
6167         niu_free_irq(np);
6168
6169 out_free_channels:
6170         niu_free_channels(np);
6171
6172 out_err:
6173         return err;
6174 }
6175
6176 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6177 {
6178         cancel_work_sync(&np->reset_task);
6179
6180         niu_disable_napi(np);
6181         netif_tx_stop_all_queues(dev);
6182
6183         del_timer_sync(&np->timer);
6184
6185         spin_lock_irq(&np->lock);
6186
6187         niu_stop_hw(np);
6188
6189         spin_unlock_irq(&np->lock);
6190 }
6191
6192 static int niu_close(struct net_device *dev)
6193 {
6194         struct niu *np = netdev_priv(dev);
6195
6196         niu_full_shutdown(np, dev);
6197
6198         niu_free_irq(np);
6199
6200         niu_free_channels(np);
6201
6202         niu_handle_led(np, 0);
6203
6204         return 0;
6205 }
6206
6207 static void niu_sync_xmac_stats(struct niu *np)
6208 {
6209         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6210
6211         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6212         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6213
6214         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6215         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6216         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6217         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6218         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6219         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6220         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6221         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6222         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6223         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6224         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6225         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6226         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6227         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6228         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6229         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6230 }
6231
6232 static void niu_sync_bmac_stats(struct niu *np)
6233 {
6234         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6235
6236         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6237         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6238
6239         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6240         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6241         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6242         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6243 }
6244
6245 static void niu_sync_mac_stats(struct niu *np)
6246 {
6247         if (np->flags & NIU_FLAGS_XMAC)
6248                 niu_sync_xmac_stats(np);
6249         else
6250                 niu_sync_bmac_stats(np);
6251 }
6252
6253 static void niu_get_rx_stats(struct niu *np)
6254 {
6255         unsigned long pkts, dropped, errors, bytes;
6256         int i;
6257
6258         pkts = dropped = errors = bytes = 0;
6259         for (i = 0; i < np->num_rx_rings; i++) {
6260                 struct rx_ring_info *rp = &np->rx_rings[i];
6261
6262                 niu_sync_rx_discard_stats(np, rp, 0);
6263
6264                 pkts += rp->rx_packets;
6265                 bytes += rp->rx_bytes;
6266                 dropped += rp->rx_dropped;
6267                 errors += rp->rx_errors;
6268         }
6269         np->dev->stats.rx_packets = pkts;
6270         np->dev->stats.rx_bytes = bytes;
6271         np->dev->stats.rx_dropped = dropped;
6272         np->dev->stats.rx_errors = errors;
6273 }
6274
6275 static void niu_get_tx_stats(struct niu *np)
6276 {
6277         unsigned long pkts, errors, bytes;
6278         int i;
6279
6280         pkts = errors = bytes = 0;
6281         for (i = 0; i < np->num_tx_rings; i++) {
6282                 struct tx_ring_info *rp = &np->tx_rings[i];
6283
6284                 pkts += rp->tx_packets;
6285                 bytes += rp->tx_bytes;
6286                 errors += rp->tx_errors;
6287         }
6288         np->dev->stats.tx_packets = pkts;
6289         np->dev->stats.tx_bytes = bytes;
6290         np->dev->stats.tx_errors = errors;
6291 }
6292
6293 static struct net_device_stats *niu_get_stats(struct net_device *dev)
6294 {
6295         struct niu *np = netdev_priv(dev);
6296
6297         niu_get_rx_stats(np);
6298         niu_get_tx_stats(np);
6299
6300         return &dev->stats;
6301 }
6302
6303 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6304 {
6305         int i;
6306
6307         for (i = 0; i < 16; i++)
6308                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6309 }
6310
6311 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6312 {
6313         int i;
6314
6315         for (i = 0; i < 16; i++)
6316                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6317 }
6318
6319 static void niu_load_hash(struct niu *np, u16 *hash)
6320 {
6321         if (np->flags & NIU_FLAGS_XMAC)
6322                 niu_load_hash_xmac(np, hash);
6323         else
6324                 niu_load_hash_bmac(np, hash);
6325 }
6326
6327 static void niu_set_rx_mode(struct net_device *dev)
6328 {
6329         struct niu *np = netdev_priv(dev);
6330         int i, alt_cnt, err;
6331         struct dev_addr_list *addr;
6332         unsigned long flags;
6333         u16 hash[16] = { 0, };
6334
6335         spin_lock_irqsave(&np->lock, flags);
6336         niu_enable_rx_mac(np, 0);
6337
6338         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6339         if (dev->flags & IFF_PROMISC)
6340                 np->flags |= NIU_FLAGS_PROMISC;
6341         if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
6342                 np->flags |= NIU_FLAGS_MCAST;
6343
6344         alt_cnt = dev->uc_count;
6345         if (alt_cnt > niu_num_alt_addr(np)) {
6346                 alt_cnt = 0;
6347                 np->flags |= NIU_FLAGS_PROMISC;
6348         }
6349
6350         if (alt_cnt) {
6351                 int index = 0;
6352
6353                 for (addr = dev->uc_list; addr; addr = addr->next) {
6354                         err = niu_set_alt_mac(np, index,
6355                                               addr->da_addr);
6356                         if (err)
6357                                 printk(KERN_WARNING PFX "%s: Error %d "
6358                                        "adding alt mac %d\n",
6359                                        dev->name, err, index);
6360                         err = niu_enable_alt_mac(np, index, 1);
6361                         if (err)
6362                                 printk(KERN_WARNING PFX "%s: Error %d "
6363                                        "enabling alt mac %d\n",
6364                                        dev->name, err, index);
6365
6366                         index++;
6367                 }
6368         } else {
6369                 int alt_start;
6370                 if (np->flags & NIU_FLAGS_XMAC)
6371                         alt_start = 0;
6372                 else
6373                         alt_start = 1;
6374                 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6375                         err = niu_enable_alt_mac(np, i, 0);
6376                         if (err)
6377                                 printk(KERN_WARNING PFX "%s: Error %d "
6378                                        "disabling alt mac %d\n",
6379                                        dev->name, err, i);
6380                 }
6381         }
6382         if (dev->flags & IFF_ALLMULTI) {
6383                 for (i = 0; i < 16; i++)
6384                         hash[i] = 0xffff;
6385         } else if (dev->mc_count > 0) {
6386                 for (addr = dev->mc_list; addr; addr = addr->next) {
6387                         u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
6388
6389                         crc >>= 24;
6390                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6391                 }
6392         }
6393
6394         if (np->flags & NIU_FLAGS_MCAST)
6395                 niu_load_hash(np, hash);
6396
6397         niu_enable_rx_mac(np, 1);
6398         spin_unlock_irqrestore(&np->lock, flags);
6399 }
6400
6401 static int niu_set_mac_addr(struct net_device *dev, void *p)
6402 {
6403         struct niu *np = netdev_priv(dev);
6404         struct sockaddr *addr = p;
6405         unsigned long flags;
6406
6407         if (!is_valid_ether_addr(addr->sa_data))
6408                 return -EINVAL;
6409
6410         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6411
6412         if (!netif_running(dev))
6413                 return 0;
6414
6415         spin_lock_irqsave(&np->lock, flags);
6416         niu_enable_rx_mac(np, 0);
6417         niu_set_primary_mac(np, dev->dev_addr);
6418         niu_enable_rx_mac(np, 1);
6419         spin_unlock_irqrestore(&np->lock, flags);
6420
6421         return 0;
6422 }
6423
6424 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6425 {
6426         return -EOPNOTSUPP;
6427 }
6428
6429 static void niu_netif_stop(struct niu *np)
6430 {
6431         np->dev->trans_start = jiffies; /* prevent tx timeout */
6432
6433         niu_disable_napi(np);
6434
6435         netif_tx_disable(np->dev);
6436 }
6437
6438 static void niu_netif_start(struct niu *np)
6439 {
6440         /* NOTE: unconditional netif_wake_queue is only appropriate
6441          * so long as all callers are assured to have free tx slots
6442          * (such as after niu_init_hw).
6443          */
6444         netif_tx_wake_all_queues(np->dev);
6445
6446         niu_enable_napi(np);
6447
6448         niu_enable_interrupts(np, 1);
6449 }
6450
6451 static void niu_reset_buffers(struct niu *np)
6452 {
6453         int i, j, k, err;
6454
6455         if (np->rx_rings) {
6456                 for (i = 0; i < np->num_rx_rings; i++) {
6457                         struct rx_ring_info *rp = &np->rx_rings[i];
6458
6459                         for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6460                                 struct page *page;
6461
6462                                 page = rp->rxhash[j];
6463                                 while (page) {
6464                                         struct page *next =
6465                                                 (struct page *) page->mapping;
6466                                         u64 base = page->index;
6467                                         base = base >> RBR_DESCR_ADDR_SHIFT;
6468                                         rp->rbr[k++] = cpu_to_le32(base);
6469                                         page = next;
6470                                 }
6471                         }
6472                         for (; k < MAX_RBR_RING_SIZE; k++) {
6473                                 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6474                                 if (unlikely(err))
6475                                         break;
6476                         }
6477
6478                         rp->rbr_index = rp->rbr_table_size - 1;
6479                         rp->rcr_index = 0;
6480                         rp->rbr_pending = 0;
6481                         rp->rbr_refill_pending = 0;
6482                 }
6483         }
6484         if (np->tx_rings) {
6485                 for (i = 0; i < np->num_tx_rings; i++) {
6486                         struct tx_ring_info *rp = &np->tx_rings[i];
6487
6488                         for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6489                                 if (rp->tx_buffs[j].skb)
6490                                         (void) release_tx_packet(np, rp, j);
6491                         }
6492
6493                         rp->pending = MAX_TX_RING_SIZE;
6494                         rp->prod = 0;
6495                         rp->cons = 0;
6496                         rp->wrap_bit = 0;
6497                 }
6498         }
6499 }
6500
6501 static void niu_reset_task(struct work_struct *work)
6502 {
6503         struct niu *np = container_of(work, struct niu, reset_task);
6504         unsigned long flags;
6505         int err;
6506
6507         spin_lock_irqsave(&np->lock, flags);
6508         if (!netif_running(np->dev)) {
6509                 spin_unlock_irqrestore(&np->lock, flags);
6510                 return;
6511         }
6512
6513         spin_unlock_irqrestore(&np->lock, flags);
6514
6515         del_timer_sync(&np->timer);
6516
6517         niu_netif_stop(np);
6518
6519         spin_lock_irqsave(&np->lock, flags);
6520
6521         niu_stop_hw(np);
6522
6523         spin_unlock_irqrestore(&np->lock, flags);
6524
6525         niu_reset_buffers(np);
6526
6527         spin_lock_irqsave(&np->lock, flags);
6528
6529         err = niu_init_hw(np);
6530         if (!err) {
6531                 np->timer.expires = jiffies + HZ;
6532                 add_timer(&np->timer);
6533                 niu_netif_start(np);
6534         }
6535
6536         spin_unlock_irqrestore(&np->lock, flags);
6537 }
6538
6539 static void niu_tx_timeout(struct net_device *dev)
6540 {
6541         struct niu *np = netdev_priv(dev);
6542
6543         dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
6544                 dev->name);
6545
6546         schedule_work(&np->reset_task);
6547 }
6548
6549 static void niu_set_txd(struct tx_ring_info *rp, int index,
6550                         u64 mapping, u64 len, u64 mark,
6551                         u64 n_frags)
6552 {
6553         __le64 *desc = &rp->descr[index];
6554
6555         *desc = cpu_to_le64(mark |
6556                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6557                             (len << TX_DESC_TR_LEN_SHIFT) |
6558                             (mapping & TX_DESC_SAD));
6559 }
6560
6561 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6562                                 u64 pad_bytes, u64 len)
6563 {
6564         u16 eth_proto, eth_proto_inner;
6565         u64 csum_bits, l3off, ihl, ret;
6566         u8 ip_proto;
6567         int ipv6;
6568
6569         eth_proto = be16_to_cpu(ehdr->h_proto);
6570         eth_proto_inner = eth_proto;
6571         if (eth_proto == ETH_P_8021Q) {
6572                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6573                 __be16 val = vp->h_vlan_encapsulated_proto;
6574
6575                 eth_proto_inner = be16_to_cpu(val);
6576         }
6577
6578         ipv6 = ihl = 0;
6579         switch (skb->protocol) {
6580         case cpu_to_be16(ETH_P_IP):
6581                 ip_proto = ip_hdr(skb)->protocol;
6582                 ihl = ip_hdr(skb)->ihl;
6583                 break;
6584         case cpu_to_be16(ETH_P_IPV6):
6585                 ip_proto = ipv6_hdr(skb)->nexthdr;
6586                 ihl = (40 >> 2);
6587                 ipv6 = 1;
6588                 break;
6589         default:
6590                 ip_proto = ihl = 0;
6591                 break;
6592         }
6593
6594         csum_bits = TXHDR_CSUM_NONE;
6595         if (skb->ip_summed == CHECKSUM_PARTIAL) {
6596                 u64 start, stuff;
6597
6598                 csum_bits = (ip_proto == IPPROTO_TCP ?
6599                              TXHDR_CSUM_TCP :
6600                              (ip_proto == IPPROTO_UDP ?
6601                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6602
6603                 start = skb_transport_offset(skb) -
6604                         (pad_bytes + sizeof(struct tx_pkt_hdr));
6605                 stuff = start + skb->csum_offset;
6606
6607                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6608                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6609         }
6610
6611         l3off = skb_network_offset(skb) -
6612                 (pad_bytes + sizeof(struct tx_pkt_hdr));
6613
6614         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6615                (len << TXHDR_LEN_SHIFT) |
6616                ((l3off / 2) << TXHDR_L3START_SHIFT) |
6617                (ihl << TXHDR_IHL_SHIFT) |
6618                ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6619                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6620                (ipv6 ? TXHDR_IP_VER : 0) |
6621                csum_bits);
6622
6623         return ret;
6624 }
6625
6626 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
6627 {
6628         struct niu *np = netdev_priv(dev);
6629         unsigned long align, headroom;
6630         struct netdev_queue *txq;
6631         struct tx_ring_info *rp;
6632         struct tx_pkt_hdr *tp;
6633         unsigned int len, nfg;
6634         struct ethhdr *ehdr;
6635         int prod, i, tlen;
6636         u64 mapping, mrk;
6637
6638         i = skb_get_queue_mapping(skb);
6639         rp = &np->tx_rings[i];
6640         txq = netdev_get_tx_queue(dev, i);
6641
6642         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6643                 netif_tx_stop_queue(txq);
6644                 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
6645                         "queue awake!\n", dev->name);
6646                 rp->tx_errors++;
6647                 return NETDEV_TX_BUSY;
6648         }
6649
6650         if (skb->len < ETH_ZLEN) {
6651                 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6652
6653                 if (skb_pad(skb, pad_bytes))
6654                         goto out;
6655                 skb_put(skb, pad_bytes);
6656         }
6657
6658         len = sizeof(struct tx_pkt_hdr) + 15;
6659         if (skb_headroom(skb) < len) {
6660                 struct sk_buff *skb_new;
6661
6662                 skb_new = skb_realloc_headroom(skb, len);
6663                 if (!skb_new) {
6664                         rp->tx_errors++;
6665                         goto out_drop;
6666                 }
6667                 kfree_skb(skb);
6668                 skb = skb_new;
6669         } else
6670                 skb_orphan(skb);
6671
6672         align = ((unsigned long) skb->data & (16 - 1));
6673         headroom = align + sizeof(struct tx_pkt_hdr);
6674
6675         ehdr = (struct ethhdr *) skb->data;
6676         tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6677
6678         len = skb->len - sizeof(struct tx_pkt_hdr);
6679         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6680         tp->resv = 0;
6681
6682         len = skb_headlen(skb);
6683         mapping = np->ops->map_single(np->device, skb->data,
6684                                       len, DMA_TO_DEVICE);
6685
6686         prod = rp->prod;
6687
6688         rp->tx_buffs[prod].skb = skb;
6689         rp->tx_buffs[prod].mapping = mapping;
6690
6691         mrk = TX_DESC_SOP;
6692         if (++rp->mark_counter == rp->mark_freq) {
6693                 rp->mark_counter = 0;
6694                 mrk |= TX_DESC_MARK;
6695                 rp->mark_pending++;
6696         }
6697
6698         tlen = len;
6699         nfg = skb_shinfo(skb)->nr_frags;
6700         while (tlen > 0) {
6701                 tlen -= MAX_TX_DESC_LEN;
6702                 nfg++;
6703         }
6704
6705         while (len > 0) {
6706                 unsigned int this_len = len;
6707
6708                 if (this_len > MAX_TX_DESC_LEN)
6709                         this_len = MAX_TX_DESC_LEN;
6710
6711                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6712                 mrk = nfg = 0;
6713
6714                 prod = NEXT_TX(rp, prod);
6715                 mapping += this_len;
6716                 len -= this_len;
6717         }
6718
6719         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
6720                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6721
6722                 len = frag->size;
6723                 mapping = np->ops->map_page(np->device, frag->page,
6724                                             frag->page_offset, len,
6725                                             DMA_TO_DEVICE);
6726
6727                 rp->tx_buffs[prod].skb = NULL;
6728                 rp->tx_buffs[prod].mapping = mapping;
6729
6730                 niu_set_txd(rp, prod, mapping, len, 0, 0);
6731
6732                 prod = NEXT_TX(rp, prod);
6733         }
6734
6735         if (prod < rp->prod)
6736                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6737         rp->prod = prod;
6738
6739         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6740
6741         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6742                 netif_tx_stop_queue(txq);
6743                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6744                         netif_tx_wake_queue(txq);
6745         }
6746
6747         dev->trans_start = jiffies;
6748
6749 out:
6750         return NETDEV_TX_OK;
6751
6752 out_drop:
6753         rp->tx_errors++;
6754         kfree_skb(skb);
6755         goto out;
6756 }
6757
6758 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6759 {
6760         struct niu *np = netdev_priv(dev);
6761         int err, orig_jumbo, new_jumbo;
6762
6763         if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6764                 return -EINVAL;
6765
6766         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6767         new_jumbo = (new_mtu > ETH_DATA_LEN);
6768
6769         dev->mtu = new_mtu;
6770
6771         if (!netif_running(dev) ||
6772             (orig_jumbo == new_jumbo))
6773                 return 0;
6774
6775         niu_full_shutdown(np, dev);
6776
6777         niu_free_channels(np);
6778
6779         niu_enable_napi(np);
6780
6781         err = niu_alloc_channels(np);
6782         if (err)
6783                 return err;
6784
6785         spin_lock_irq(&np->lock);
6786
6787         err = niu_init_hw(np);
6788         if (!err) {
6789                 init_timer(&np->timer);
6790                 np->timer.expires = jiffies + HZ;
6791                 np->timer.data = (unsigned long) np;
6792                 np->timer.function = niu_timer;
6793
6794                 err = niu_enable_interrupts(np, 1);
6795                 if (err)
6796                         niu_stop_hw(np);
6797         }
6798
6799         spin_unlock_irq(&np->lock);
6800
6801         if (!err) {
6802                 netif_tx_start_all_queues(dev);
6803                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6804                         netif_carrier_on(dev);
6805
6806                 add_timer(&np->timer);
6807         }
6808
6809         return err;
6810 }
6811
6812 static void niu_get_drvinfo(struct net_device *dev,
6813                             struct ethtool_drvinfo *info)
6814 {
6815         struct niu *np = netdev_priv(dev);
6816         struct niu_vpd *vpd = &np->vpd;
6817
6818         strcpy(info->driver, DRV_MODULE_NAME);
6819         strcpy(info->version, DRV_MODULE_VERSION);
6820         sprintf(info->fw_version, "%d.%d",
6821                 vpd->fcode_major, vpd->fcode_minor);
6822         if (np->parent->plat_type != PLAT_TYPE_NIU)
6823                 strcpy(info->bus_info, pci_name(np->pdev));
6824 }
6825
6826 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6827 {
6828         struct niu *np = netdev_priv(dev);
6829         struct niu_link_config *lp;
6830
6831         lp = &np->link_config;
6832
6833         memset(cmd, 0, sizeof(*cmd));
6834         cmd->phy_address = np->phy_addr;
6835         cmd->supported = lp->supported;
6836         cmd->advertising = lp->active_advertising;
6837         cmd->autoneg = lp->active_autoneg;
6838         cmd->speed = lp->active_speed;
6839         cmd->duplex = lp->active_duplex;
6840         cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6841         cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6842                 XCVR_EXTERNAL : XCVR_INTERNAL;
6843
6844         return 0;
6845 }
6846
6847 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6848 {
6849         struct niu *np = netdev_priv(dev);
6850         struct niu_link_config *lp = &np->link_config;
6851
6852         lp->advertising = cmd->advertising;
6853         lp->speed = cmd->speed;
6854         lp->duplex = cmd->duplex;
6855         lp->autoneg = cmd->autoneg;
6856         return niu_init_link(np);
6857 }
6858
6859 static u32 niu_get_msglevel(struct net_device *dev)
6860 {
6861         struct niu *np = netdev_priv(dev);
6862         return np->msg_enable;
6863 }
6864
6865 static void niu_set_msglevel(struct net_device *dev, u32 value)
6866 {
6867         struct niu *np = netdev_priv(dev);
6868         np->msg_enable = value;
6869 }
6870
6871 static int niu_nway_reset(struct net_device *dev)
6872 {
6873         struct niu *np = netdev_priv(dev);
6874
6875         if (np->link_config.autoneg)
6876                 return niu_init_link(np);
6877
6878         return 0;
6879 }
6880
6881 static int niu_get_eeprom_len(struct net_device *dev)
6882 {
6883         struct niu *np = netdev_priv(dev);
6884
6885         return np->eeprom_len;
6886 }
6887
6888 static int niu_get_eeprom(struct net_device *dev,
6889                           struct ethtool_eeprom *eeprom, u8 *data)
6890 {
6891         struct niu *np = netdev_priv(dev);
6892         u32 offset, len, val;
6893
6894         offset = eeprom->offset;
6895         len = eeprom->len;
6896
6897         if (offset + len < offset)
6898                 return -EINVAL;
6899         if (offset >= np->eeprom_len)
6900                 return -EINVAL;
6901         if (offset + len > np->eeprom_len)
6902                 len = eeprom->len = np->eeprom_len - offset;
6903
6904         if (offset & 3) {
6905                 u32 b_offset, b_count;
6906
6907                 b_offset = offset & 3;
6908                 b_count = 4 - b_offset;
6909                 if (b_count > len)
6910                         b_count = len;
6911
6912                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6913                 memcpy(data, ((char *)&val) + b_offset, b_count);
6914                 data += b_count;
6915                 len -= b_count;
6916                 offset += b_count;
6917         }
6918         while (len >= 4) {
6919                 val = nr64(ESPC_NCR(offset / 4));
6920                 memcpy(data, &val, 4);
6921                 data += 4;
6922                 len -= 4;
6923                 offset += 4;
6924         }
6925         if (len) {
6926                 val = nr64(ESPC_NCR(offset / 4));
6927                 memcpy(data, &val, len);
6928         }
6929         return 0;
6930 }
6931
6932 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6933 {
6934         switch (flow_type) {
6935         case TCP_V4_FLOW:
6936         case TCP_V6_FLOW:
6937                 *pid = IPPROTO_TCP;
6938                 break;
6939         case UDP_V4_FLOW:
6940         case UDP_V6_FLOW:
6941                 *pid = IPPROTO_UDP;
6942                 break;
6943         case SCTP_V4_FLOW:
6944         case SCTP_V6_FLOW:
6945                 *pid = IPPROTO_SCTP;
6946                 break;
6947         case AH_V4_FLOW:
6948         case AH_V6_FLOW:
6949                 *pid = IPPROTO_AH;
6950                 break;
6951         case ESP_V4_FLOW:
6952         case ESP_V6_FLOW:
6953                 *pid = IPPROTO_ESP;
6954                 break;
6955         default:
6956                 *pid = 0;
6957                 break;
6958         }
6959 }
6960
6961 static int niu_class_to_ethflow(u64 class, int *flow_type)
6962 {
6963         switch (class) {
6964         case CLASS_CODE_TCP_IPV4:
6965                 *flow_type = TCP_V4_FLOW;
6966                 break;
6967         case CLASS_CODE_UDP_IPV4:
6968                 *flow_type = UDP_V4_FLOW;
6969                 break;
6970         case CLASS_CODE_AH_ESP_IPV4:
6971                 *flow_type = AH_V4_FLOW;
6972                 break;
6973         case CLASS_CODE_SCTP_IPV4:
6974                 *flow_type = SCTP_V4_FLOW;
6975                 break;
6976         case CLASS_CODE_TCP_IPV6:
6977                 *flow_type = TCP_V6_FLOW;
6978                 break;
6979         case CLASS_CODE_UDP_IPV6:
6980                 *flow_type = UDP_V6_FLOW;
6981                 break;
6982         case CLASS_CODE_AH_ESP_IPV6:
6983                 *flow_type = AH_V6_FLOW;
6984                 break;
6985         case CLASS_CODE_SCTP_IPV6:
6986                 *flow_type = SCTP_V6_FLOW;
6987                 break;
6988         case CLASS_CODE_USER_PROG1:
6989         case CLASS_CODE_USER_PROG2:
6990         case CLASS_CODE_USER_PROG3:
6991         case CLASS_CODE_USER_PROG4:
6992                 *flow_type = IP_USER_FLOW;
6993                 break;
6994         default:
6995                 return 0;
6996         }
6997
6998         return 1;
6999 }
7000
7001 static int niu_ethflow_to_class(int flow_type, u64 *class)
7002 {
7003         switch (flow_type) {
7004         case TCP_V4_FLOW:
7005                 *class = CLASS_CODE_TCP_IPV4;
7006                 break;
7007         case UDP_V4_FLOW:
7008                 *class = CLASS_CODE_UDP_IPV4;
7009                 break;
7010         case AH_V4_FLOW:
7011         case ESP_V4_FLOW:
7012                 *class = CLASS_CODE_AH_ESP_IPV4;
7013                 break;
7014         case SCTP_V4_FLOW:
7015                 *class = CLASS_CODE_SCTP_IPV4;
7016                 break;
7017         case TCP_V6_FLOW:
7018                 *class = CLASS_CODE_TCP_IPV6;
7019                 break;
7020         case UDP_V6_FLOW:
7021                 *class = CLASS_CODE_UDP_IPV6;
7022                 break;
7023         case AH_V6_FLOW:
7024         case ESP_V6_FLOW:
7025                 *class = CLASS_CODE_AH_ESP_IPV6;
7026                 break;
7027         case SCTP_V6_FLOW:
7028                 *class = CLASS_CODE_SCTP_IPV6;
7029                 break;
7030         default:
7031                 return 0;
7032         }
7033
7034         return 1;
7035 }
7036
7037 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7038 {
7039         u64 ethflow = 0;
7040
7041         if (flow_key & FLOW_KEY_L2DA)
7042                 ethflow |= RXH_L2DA;
7043         if (flow_key & FLOW_KEY_VLAN)
7044                 ethflow |= RXH_VLAN;
7045         if (flow_key & FLOW_KEY_IPSA)
7046                 ethflow |= RXH_IP_SRC;
7047         if (flow_key & FLOW_KEY_IPDA)
7048                 ethflow |= RXH_IP_DST;
7049         if (flow_key & FLOW_KEY_PROTO)
7050                 ethflow |= RXH_L3_PROTO;
7051         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7052                 ethflow |= RXH_L4_B_0_1;
7053         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7054                 ethflow |= RXH_L4_B_2_3;
7055
7056         return ethflow;
7057
7058 }
7059
7060 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7061 {
7062         u64 key = 0;
7063
7064         if (ethflow & RXH_L2DA)
7065                 key |= FLOW_KEY_L2DA;
7066         if (ethflow & RXH_VLAN)
7067                 key |= FLOW_KEY_VLAN;
7068         if (ethflow & RXH_IP_SRC)
7069                 key |= FLOW_KEY_IPSA;
7070         if (ethflow & RXH_IP_DST)
7071                 key |= FLOW_KEY_IPDA;
7072         if (ethflow & RXH_L3_PROTO)
7073                 key |= FLOW_KEY_PROTO;
7074         if (ethflow & RXH_L4_B_0_1)
7075                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7076         if (ethflow & RXH_L4_B_2_3)
7077                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7078
7079         *flow_key = key;
7080
7081         return 1;
7082
7083 }
7084
7085 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7086 {
7087         u64 class;
7088
7089         nfc->data = 0;
7090
7091         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7092                 return -EINVAL;
7093
7094         if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7095             TCAM_KEY_DISC)
7096                 nfc->data = RXH_DISCARD;
7097         else
7098                 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7099                                                       CLASS_CODE_USER_PROG1]);
7100         return 0;
7101 }
7102
7103 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7104                                         struct ethtool_rx_flow_spec *fsp)
7105 {
7106
7107         fsp->h_u.tcp_ip4_spec.ip4src = (tp->key[3] & TCAM_V4KEY3_SADDR) >>
7108                 TCAM_V4KEY3_SADDR_SHIFT;
7109         fsp->h_u.tcp_ip4_spec.ip4dst = (tp->key[3] & TCAM_V4KEY3_DADDR) >>
7110                 TCAM_V4KEY3_DADDR_SHIFT;
7111         fsp->m_u.tcp_ip4_spec.ip4src = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >>
7112                 TCAM_V4KEY3_SADDR_SHIFT;
7113         fsp->m_u.tcp_ip4_spec.ip4dst = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >>
7114                 TCAM_V4KEY3_DADDR_SHIFT;
7115
7116         fsp->h_u.tcp_ip4_spec.ip4src =
7117                 cpu_to_be32(fsp->h_u.tcp_ip4_spec.ip4src);
7118         fsp->m_u.tcp_ip4_spec.ip4src =
7119                 cpu_to_be32(fsp->m_u.tcp_ip4_spec.ip4src);
7120         fsp->h_u.tcp_ip4_spec.ip4dst =
7121                 cpu_to_be32(fsp->h_u.tcp_ip4_spec.ip4dst);
7122         fsp->m_u.tcp_ip4_spec.ip4dst =
7123                 cpu_to_be32(fsp->m_u.tcp_ip4_spec.ip4dst);
7124
7125         fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7126                 TCAM_V4KEY2_TOS_SHIFT;
7127         fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7128                 TCAM_V4KEY2_TOS_SHIFT;
7129
7130         switch (fsp->flow_type) {
7131         case TCP_V4_FLOW:
7132         case UDP_V4_FLOW:
7133         case SCTP_V4_FLOW:
7134                 fsp->h_u.tcp_ip4_spec.psrc =
7135                         ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7136                          TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7137                 fsp->h_u.tcp_ip4_spec.pdst =
7138                         ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7139                          TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7140                 fsp->m_u.tcp_ip4_spec.psrc =
7141                         ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7142                          TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7143                 fsp->m_u.tcp_ip4_spec.pdst =
7144                         ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7145                          TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7146
7147                 fsp->h_u.tcp_ip4_spec.psrc =
7148                         cpu_to_be16(fsp->h_u.tcp_ip4_spec.psrc);
7149                 fsp->h_u.tcp_ip4_spec.pdst =
7150                         cpu_to_be16(fsp->h_u.tcp_ip4_spec.pdst);
7151                 fsp->m_u.tcp_ip4_spec.psrc =
7152                         cpu_to_be16(fsp->m_u.tcp_ip4_spec.psrc);
7153                 fsp->m_u.tcp_ip4_spec.pdst =
7154                         cpu_to_be16(fsp->m_u.tcp_ip4_spec.pdst);
7155                 break;
7156         case AH_V4_FLOW:
7157         case ESP_V4_FLOW:
7158                 fsp->h_u.ah_ip4_spec.spi =
7159                         (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7160                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7161                 fsp->m_u.ah_ip4_spec.spi =
7162                         (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7163                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7164
7165                 fsp->h_u.ah_ip4_spec.spi =
7166                         cpu_to_be32(fsp->h_u.ah_ip4_spec.spi);
7167                 fsp->m_u.ah_ip4_spec.spi =
7168                         cpu_to_be32(fsp->m_u.ah_ip4_spec.spi);
7169                 break;
7170         case IP_USER_FLOW:
7171                 fsp->h_u.usr_ip4_spec.l4_4_bytes =
7172                         (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7173                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7174                 fsp->m_u.usr_ip4_spec.l4_4_bytes =
7175                         (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7176                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7177
7178                 fsp->h_u.usr_ip4_spec.l4_4_bytes =
7179                         cpu_to_be32(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7180                 fsp->m_u.usr_ip4_spec.l4_4_bytes =
7181                         cpu_to_be32(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7182
7183                 fsp->h_u.usr_ip4_spec.proto =
7184                         (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7185                         TCAM_V4KEY2_PROTO_SHIFT;
7186                 fsp->m_u.usr_ip4_spec.proto =
7187                         (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7188                         TCAM_V4KEY2_PROTO_SHIFT;
7189
7190                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7191                 break;
7192         default:
7193                 break;
7194         }
7195 }
7196
7197 static int niu_get_ethtool_tcam_entry(struct niu *np,
7198                                       struct ethtool_rxnfc *nfc)
7199 {
7200         struct niu_parent *parent = np->parent;
7201         struct niu_tcam_entry *tp;
7202         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7203         u16 idx;
7204         u64 class;
7205         int ret = 0;
7206
7207         idx = tcam_get_index(np, (u16)nfc->fs.location);
7208
7209         tp = &parent->tcam[idx];
7210         if (!tp->valid) {
7211                 pr_info(PFX "niu%d: %s entry [%d] invalid for idx[%d]\n",
7212                 parent->index, np->dev->name, (u16)nfc->fs.location, idx);
7213                 return -EINVAL;
7214         }
7215
7216         /* fill the flow spec entry */
7217         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7218                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7219         ret = niu_class_to_ethflow(class, &fsp->flow_type);
7220
7221         if (ret < 0) {
7222                 pr_info(PFX "niu%d: %s niu_class_to_ethflow failed\n",
7223                 parent->index, np->dev->name);
7224                 ret = -EINVAL;
7225                 goto out;
7226         }
7227
7228         if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7229                 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7230                         TCAM_V4KEY2_PROTO_SHIFT;
7231                 if (proto == IPPROTO_ESP) {
7232                         if (fsp->flow_type == AH_V4_FLOW)
7233                                 fsp->flow_type = ESP_V4_FLOW;
7234                         else
7235                                 fsp->flow_type = ESP_V6_FLOW;
7236                 }
7237         }
7238
7239         switch (fsp->flow_type) {
7240         case TCP_V4_FLOW:
7241         case UDP_V4_FLOW:
7242         case SCTP_V4_FLOW:
7243         case AH_V4_FLOW:
7244         case ESP_V4_FLOW:
7245                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7246                 break;
7247         case TCP_V6_FLOW:
7248         case UDP_V6_FLOW:
7249         case SCTP_V6_FLOW:
7250         case AH_V6_FLOW:
7251         case ESP_V6_FLOW:
7252                 /* Not yet implemented */
7253                 ret = -EINVAL;
7254                 break;
7255         case IP_USER_FLOW:
7256                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7257                 break;
7258         default:
7259                 ret = -EINVAL;
7260                 break;
7261         }
7262
7263         if (ret < 0)
7264                 goto out;
7265
7266         if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7267                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7268         else
7269                 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7270                         TCAM_ASSOCDATA_OFFSET_SHIFT;
7271
7272         /* put the tcam size here */
7273         nfc->data = tcam_get_size(np);
7274 out:
7275         return ret;
7276 }
7277
7278 static int niu_get_ethtool_tcam_all(struct niu *np,
7279                                     struct ethtool_rxnfc *nfc,
7280                                     u32 *rule_locs)
7281 {
7282         struct niu_parent *parent = np->parent;
7283         struct niu_tcam_entry *tp;
7284         int i, idx, cnt;
7285         u16 n_entries;
7286         unsigned long flags;
7287
7288
7289         /* put the tcam size here */
7290         nfc->data = tcam_get_size(np);
7291
7292         niu_lock_parent(np, flags);
7293         n_entries = nfc->rule_cnt;
7294         for (cnt = 0, i = 0; i < nfc->data; i++) {
7295                 idx = tcam_get_index(np, i);
7296                 tp = &parent->tcam[idx];
7297                 if (!tp->valid)
7298                         continue;
7299                 rule_locs[cnt] = i;
7300                 cnt++;
7301         }
7302         niu_unlock_parent(np, flags);
7303
7304         if (n_entries != cnt) {
7305                 /* print warning, this should not happen */
7306                 pr_info(PFX "niu%d: %s In niu_get_ethtool_tcam_all, "
7307                         "n_entries[%d] != cnt[%d]!!!\n\n",
7308                         np->parent->index, np->dev->name, n_entries, cnt);
7309         }
7310
7311         return 0;
7312 }
7313
7314 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7315                        void *rule_locs)
7316 {
7317         struct niu *np = netdev_priv(dev);
7318         int ret = 0;
7319
7320         switch (cmd->cmd) {
7321         case ETHTOOL_GRXFH:
7322                 ret = niu_get_hash_opts(np, cmd);
7323                 break;
7324         case ETHTOOL_GRXRINGS:
7325                 cmd->data = np->num_rx_rings;
7326                 break;
7327         case ETHTOOL_GRXCLSRLCNT:
7328                 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7329                 break;
7330         case ETHTOOL_GRXCLSRULE:
7331                 ret = niu_get_ethtool_tcam_entry(np, cmd);
7332                 break;
7333         case ETHTOOL_GRXCLSRLALL:
7334                 ret = niu_get_ethtool_tcam_all(np, cmd, (u32 *)rule_locs);
7335                 break;
7336         default:
7337                 ret = -EINVAL;
7338                 break;
7339         }
7340
7341         return ret;
7342 }
7343
7344 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7345 {
7346         u64 class;
7347         u64 flow_key = 0;
7348         unsigned long flags;
7349
7350         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7351                 return -EINVAL;
7352
7353         if (class < CLASS_CODE_USER_PROG1 ||
7354             class > CLASS_CODE_SCTP_IPV6)
7355                 return -EINVAL;
7356
7357         if (nfc->data & RXH_DISCARD) {
7358                 niu_lock_parent(np, flags);
7359                 flow_key = np->parent->tcam_key[class -
7360                                                CLASS_CODE_USER_PROG1];
7361                 flow_key |= TCAM_KEY_DISC;
7362                 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7363                 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7364                 niu_unlock_parent(np, flags);
7365                 return 0;
7366         } else {
7367                 /* Discard was set before, but is not set now */
7368                 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7369                     TCAM_KEY_DISC) {
7370                         niu_lock_parent(np, flags);
7371                         flow_key = np->parent->tcam_key[class -
7372                                                CLASS_CODE_USER_PROG1];
7373                         flow_key &= ~TCAM_KEY_DISC;
7374                         nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7375                              flow_key);
7376                         np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7377                                 flow_key;
7378                         niu_unlock_parent(np, flags);
7379                 }
7380         }
7381
7382         if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7383                 return -EINVAL;
7384
7385         niu_lock_parent(np, flags);
7386         nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7387         np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7388         niu_unlock_parent(np, flags);
7389
7390         return 0;
7391 }
7392
7393 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7394                                        struct niu_tcam_entry *tp,
7395                                        int l2_rdc_tab, u64 class)
7396 {
7397         u8 pid = 0;
7398         u32 sip, dip, sipm, dipm, spi, spim;
7399         u16 sport, dport, spm, dpm;
7400
7401         sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7402         sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7403         dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7404         dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7405
7406         tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7407         tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7408         tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7409         tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7410
7411         tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7412         tp->key[3] |= dip;
7413
7414         tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7415         tp->key_mask[3] |= dipm;
7416
7417         tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7418                        TCAM_V4KEY2_TOS_SHIFT);
7419         tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7420                             TCAM_V4KEY2_TOS_SHIFT);
7421         switch (fsp->flow_type) {
7422         case TCP_V4_FLOW:
7423         case UDP_V4_FLOW:
7424         case SCTP_V4_FLOW:
7425                 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7426                 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7427                 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7428                 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7429
7430                 tp->key[2] |= (((u64)sport << 16) | dport);
7431                 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7432                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7433                 break;
7434         case AH_V4_FLOW:
7435         case ESP_V4_FLOW:
7436                 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7437                 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7438
7439                 tp->key[2] |= spi;
7440                 tp->key_mask[2] |= spim;
7441                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7442                 break;
7443         case IP_USER_FLOW:
7444                 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7445                 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7446
7447                 tp->key[2] |= spi;
7448                 tp->key_mask[2] |= spim;
7449                 pid = fsp->h_u.usr_ip4_spec.proto;
7450                 break;
7451         default:
7452                 break;
7453         }
7454
7455         tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7456         if (pid) {
7457                 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7458         }
7459 }
7460
7461 static int niu_add_ethtool_tcam_entry(struct niu *np,
7462                                       struct ethtool_rxnfc *nfc)
7463 {
7464         struct niu_parent *parent = np->parent;
7465         struct niu_tcam_entry *tp;
7466         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7467         struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7468         int l2_rdc_table = rdc_table->first_table_num;
7469         u16 idx;
7470         u64 class;
7471         unsigned long flags;
7472         int err, ret;
7473
7474         ret = 0;
7475
7476         idx = nfc->fs.location;
7477         if (idx >= tcam_get_size(np))
7478                 return -EINVAL;
7479
7480         if (fsp->flow_type == IP_USER_FLOW) {
7481                 int i;
7482                 int add_usr_cls = 0;
7483                 int ipv6 = 0;
7484                 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7485                 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7486
7487                 niu_lock_parent(np, flags);
7488
7489                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7490                         if (parent->l3_cls[i]) {
7491                                 if (uspec->proto == parent->l3_cls_pid[i]) {
7492                                         class = parent->l3_cls[i];
7493                                         parent->l3_cls_refcnt[i]++;
7494                                         add_usr_cls = 1;
7495                                         break;
7496                                 }
7497                         } else {
7498                                 /* Program new user IP class */
7499                                 switch (i) {
7500                                 case 0:
7501                                         class = CLASS_CODE_USER_PROG1;
7502                                         break;
7503                                 case 1:
7504                                         class = CLASS_CODE_USER_PROG2;
7505                                         break;
7506                                 case 2:
7507                                         class = CLASS_CODE_USER_PROG3;
7508                                         break;
7509                                 case 3:
7510                                         class = CLASS_CODE_USER_PROG4;
7511                                         break;
7512                                 default:
7513                                         break;
7514                                 }
7515                                 if (uspec->ip_ver == ETH_RX_NFC_IP6)
7516                                         ipv6 = 1;
7517                                 ret = tcam_user_ip_class_set(np, class, ipv6,
7518                                                              uspec->proto,
7519                                                              uspec->tos,
7520                                                              umask->tos);
7521                                 if (ret)
7522                                         goto out;
7523
7524                                 ret = tcam_user_ip_class_enable(np, class, 1);
7525                                 if (ret)
7526                                         goto out;
7527                                 parent->l3_cls[i] = class;
7528                                 parent->l3_cls_pid[i] = uspec->proto;
7529                                 parent->l3_cls_refcnt[i]++;
7530                                 add_usr_cls = 1;
7531                                 break;
7532                         }
7533                 }
7534                 if (!add_usr_cls) {
7535                         pr_info(PFX "niu%d: %s niu_add_ethtool_tcam_entry: "
7536                                 "Could not find/insert class for pid %d\n",
7537                                 parent->index, np->dev->name, uspec->proto);
7538                         ret = -EINVAL;
7539                         goto out;
7540                 }
7541                 niu_unlock_parent(np, flags);
7542         } else {
7543                 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7544                         return -EINVAL;
7545                 }
7546         }
7547
7548         niu_lock_parent(np, flags);
7549
7550         idx = tcam_get_index(np, idx);
7551         tp = &parent->tcam[idx];
7552
7553         memset(tp, 0, sizeof(*tp));
7554
7555         /* fill in the tcam key and mask */
7556         switch (fsp->flow_type) {
7557         case TCP_V4_FLOW:
7558         case UDP_V4_FLOW:
7559         case SCTP_V4_FLOW:
7560         case AH_V4_FLOW:
7561         case ESP_V4_FLOW:
7562                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7563                 break;
7564         case TCP_V6_FLOW:
7565         case UDP_V6_FLOW:
7566         case SCTP_V6_FLOW:
7567         case AH_V6_FLOW:
7568         case ESP_V6_FLOW:
7569                 /* Not yet implemented */
7570                 pr_info(PFX "niu%d: %s In niu_add_ethtool_tcam_entry: "
7571                         "flow %d for IPv6 not implemented\n\n",
7572                         parent->index, np->dev->name, fsp->flow_type);
7573                 ret = -EINVAL;
7574                 goto out;
7575         case IP_USER_FLOW:
7576                 if (fsp->h_u.usr_ip4_spec.ip_ver == ETH_RX_NFC_IP4) {
7577                         niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table,
7578                                                    class);
7579                 } else {
7580                         /* Not yet implemented */
7581                         pr_info(PFX "niu%d: %s In niu_add_ethtool_tcam_entry: "
7582                         "usr flow for IPv6 not implemented\n\n",
7583                         parent->index, np->dev->name);
7584                         ret = -EINVAL;
7585                         goto out;
7586                 }
7587                 break;
7588         default:
7589                 pr_info(PFX "niu%d: %s In niu_add_ethtool_tcam_entry: "
7590                         "Unknown flow type %d\n\n",
7591                         parent->index, np->dev->name, fsp->flow_type);
7592                 ret = -EINVAL;
7593                 goto out;
7594         }
7595
7596         /* fill in the assoc data */
7597         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7598                 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7599         } else {
7600                 if (fsp->ring_cookie >= np->num_rx_rings) {
7601                         pr_info(PFX "niu%d: %s In niu_add_ethtool_tcam_entry: "
7602                                 "Invalid RX ring %lld\n\n",
7603                                 parent->index, np->dev->name,
7604                                 (long long) fsp->ring_cookie);
7605                         ret = -EINVAL;
7606                         goto out;
7607                 }
7608                 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7609                                   (fsp->ring_cookie <<
7610                                    TCAM_ASSOCDATA_OFFSET_SHIFT));
7611         }
7612
7613         err = tcam_write(np, idx, tp->key, tp->key_mask);
7614         if (err) {
7615                 ret = -EINVAL;
7616                 goto out;
7617         }
7618         err = tcam_assoc_write(np, idx, tp->assoc_data);
7619         if (err) {
7620                 ret = -EINVAL;
7621                 goto out;
7622         }
7623
7624         /* validate the entry */
7625         tp->valid = 1;
7626         np->clas.tcam_valid_entries++;
7627 out:
7628         niu_unlock_parent(np, flags);
7629
7630         return ret;
7631 }
7632
7633 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7634 {
7635         struct niu_parent *parent = np->parent;
7636         struct niu_tcam_entry *tp;
7637         u16 idx;
7638         unsigned long flags;
7639         u64 class;
7640         int ret = 0;
7641
7642         if (loc >= tcam_get_size(np))
7643                 return -EINVAL;
7644
7645         niu_lock_parent(np, flags);
7646
7647         idx = tcam_get_index(np, loc);
7648         tp = &parent->tcam[idx];
7649
7650         /* if the entry is of a user defined class, then update*/
7651         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7652                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7653
7654         if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7655                 int i;
7656                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7657                         if (parent->l3_cls[i] == class) {
7658                                 parent->l3_cls_refcnt[i]--;
7659                                 if (!parent->l3_cls_refcnt[i]) {
7660                                         /* disable class */
7661                                         ret = tcam_user_ip_class_enable(np,
7662                                                                         class,
7663                                                                         0);
7664                                         if (ret)
7665                                                 goto out;
7666                                         parent->l3_cls[i] = 0;
7667                                         parent->l3_cls_pid[i] = 0;
7668                                 }
7669                                 break;
7670                         }
7671                 }
7672                 if (i == NIU_L3_PROG_CLS) {
7673                         pr_info(PFX "niu%d: %s In niu_del_ethtool_tcam_entry,"
7674                                 "Usr class 0x%llx not found \n",
7675                                 parent->index, np->dev->name,
7676                                 (unsigned long long) class);
7677                         ret = -EINVAL;
7678                         goto out;
7679                 }
7680         }
7681
7682         ret = tcam_flush(np, idx);
7683         if (ret)
7684                 goto out;
7685
7686         /* invalidate the entry */
7687         tp->valid = 0;
7688         np->clas.tcam_valid_entries--;
7689 out:
7690         niu_unlock_parent(np, flags);
7691
7692         return ret;
7693 }
7694
7695 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7696 {
7697         struct niu *np = netdev_priv(dev);
7698         int ret = 0;
7699
7700         switch (cmd->cmd) {
7701         case ETHTOOL_SRXFH:
7702                 ret = niu_set_hash_opts(np, cmd);
7703                 break;
7704         case ETHTOOL_SRXCLSRLINS:
7705                 ret = niu_add_ethtool_tcam_entry(np, cmd);
7706                 break;
7707         case ETHTOOL_SRXCLSRLDEL:
7708                 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7709                 break;
7710         default:
7711                 ret = -EINVAL;
7712                 break;
7713         }
7714
7715         return ret;
7716 }
7717
7718 static const struct {
7719         const char string[ETH_GSTRING_LEN];
7720 } niu_xmac_stat_keys[] = {
7721         { "tx_frames" },
7722         { "tx_bytes" },
7723         { "tx_fifo_errors" },
7724         { "tx_overflow_errors" },
7725         { "tx_max_pkt_size_errors" },
7726         { "tx_underflow_errors" },
7727         { "rx_local_faults" },
7728         { "rx_remote_faults" },
7729         { "rx_link_faults" },
7730         { "rx_align_errors" },
7731         { "rx_frags" },
7732         { "rx_mcasts" },
7733         { "rx_bcasts" },
7734         { "rx_hist_cnt1" },
7735         { "rx_hist_cnt2" },
7736         { "rx_hist_cnt3" },
7737         { "rx_hist_cnt4" },
7738         { "rx_hist_cnt5" },
7739         { "rx_hist_cnt6" },
7740         { "rx_hist_cnt7" },
7741         { "rx_octets" },
7742         { "rx_code_violations" },
7743         { "rx_len_errors" },
7744         { "rx_crc_errors" },
7745         { "rx_underflows" },
7746         { "rx_overflows" },
7747         { "pause_off_state" },
7748         { "pause_on_state" },
7749         { "pause_received" },
7750 };
7751
7752 #define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
7753
7754 static const struct {
7755         const char string[ETH_GSTRING_LEN];
7756 } niu_bmac_stat_keys[] = {
7757         { "tx_underflow_errors" },
7758         { "tx_max_pkt_size_errors" },
7759         { "tx_bytes" },
7760         { "tx_frames" },
7761         { "rx_overflows" },
7762         { "rx_frames" },
7763         { "rx_align_errors" },
7764         { "rx_crc_errors" },
7765         { "rx_len_errors" },
7766         { "pause_off_state" },
7767         { "pause_on_state" },
7768         { "pause_received" },
7769 };
7770
7771 #define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
7772
7773 static const struct {
7774         const char string[ETH_GSTRING_LEN];
7775 } niu_rxchan_stat_keys[] = {
7776         { "rx_channel" },
7777         { "rx_packets" },
7778         { "rx_bytes" },
7779         { "rx_dropped" },
7780         { "rx_errors" },
7781 };
7782
7783 #define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
7784
7785 static const struct {
7786         const char string[ETH_GSTRING_LEN];
7787 } niu_txchan_stat_keys[] = {
7788         { "tx_channel" },
7789         { "tx_packets" },
7790         { "tx_bytes" },
7791         { "tx_errors" },
7792 };
7793
7794 #define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
7795
7796 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7797 {
7798         struct niu *np = netdev_priv(dev);
7799         int i;
7800
7801         if (stringset != ETH_SS_STATS)
7802                 return;
7803
7804         if (np->flags & NIU_FLAGS_XMAC) {
7805                 memcpy(data, niu_xmac_stat_keys,
7806                        sizeof(niu_xmac_stat_keys));
7807                 data += sizeof(niu_xmac_stat_keys);
7808         } else {
7809                 memcpy(data, niu_bmac_stat_keys,
7810                        sizeof(niu_bmac_stat_keys));
7811                 data += sizeof(niu_bmac_stat_keys);
7812         }
7813         for (i = 0; i < np->num_rx_rings; i++) {
7814                 memcpy(data, niu_rxchan_stat_keys,
7815                        sizeof(niu_rxchan_stat_keys));
7816                 data += sizeof(niu_rxchan_stat_keys);
7817         }
7818         for (i = 0; i < np->num_tx_rings; i++) {
7819                 memcpy(data, niu_txchan_stat_keys,
7820                        sizeof(niu_txchan_stat_keys));
7821                 data += sizeof(niu_txchan_stat_keys);
7822         }
7823 }
7824
7825 static int niu_get_stats_count(struct net_device *dev)
7826 {
7827         struct niu *np = netdev_priv(dev);
7828
7829         return ((np->flags & NIU_FLAGS_XMAC ?
7830                  NUM_XMAC_STAT_KEYS :
7831                  NUM_BMAC_STAT_KEYS) +
7832                 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7833                 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
7834 }
7835
7836 static void niu_get_ethtool_stats(struct net_device *dev,
7837                                   struct ethtool_stats *stats, u64 *data)
7838 {
7839         struct niu *np = netdev_priv(dev);
7840         int i;
7841
7842         niu_sync_mac_stats(np);
7843         if (np->flags & NIU_FLAGS_XMAC) {
7844                 memcpy(data, &np->mac_stats.xmac,
7845                        sizeof(struct niu_xmac_stats));
7846                 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7847         } else {
7848                 memcpy(data, &np->mac_stats.bmac,
7849                        sizeof(struct niu_bmac_stats));
7850                 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7851         }
7852         for (i = 0; i < np->num_rx_rings; i++) {
7853                 struct rx_ring_info *rp = &np->rx_rings[i];
7854
7855                 niu_sync_rx_discard_stats(np, rp, 0);
7856
7857                 data[0] = rp->rx_channel;
7858                 data[1] = rp->rx_packets;
7859                 data[2] = rp->rx_bytes;
7860                 data[3] = rp->rx_dropped;
7861                 data[4] = rp->rx_errors;
7862                 data += 5;
7863         }
7864         for (i = 0; i < np->num_tx_rings; i++) {
7865                 struct tx_ring_info *rp = &np->tx_rings[i];
7866
7867                 data[0] = rp->tx_channel;
7868                 data[1] = rp->tx_packets;
7869                 data[2] = rp->tx_bytes;
7870                 data[3] = rp->tx_errors;
7871                 data += 4;
7872         }
7873 }
7874
7875 static u64 niu_led_state_save(struct niu *np)
7876 {
7877         if (np->flags & NIU_FLAGS_XMAC)
7878                 return nr64_mac(XMAC_CONFIG);
7879         else
7880                 return nr64_mac(BMAC_XIF_CONFIG);
7881 }
7882
7883 static void niu_led_state_restore(struct niu *np, u64 val)
7884 {
7885         if (np->flags & NIU_FLAGS_XMAC)
7886                 nw64_mac(XMAC_CONFIG, val);
7887         else
7888                 nw64_mac(BMAC_XIF_CONFIG, val);
7889 }
7890
7891 static void niu_force_led(struct niu *np, int on)
7892 {
7893         u64 val, reg, bit;
7894
7895         if (np->flags & NIU_FLAGS_XMAC) {
7896                 reg = XMAC_CONFIG;
7897                 bit = XMAC_CONFIG_FORCE_LED_ON;
7898         } else {
7899                 reg = BMAC_XIF_CONFIG;
7900                 bit = BMAC_XIF_CONFIG_LINK_LED;
7901         }
7902
7903         val = nr64_mac(reg);
7904         if (on)
7905                 val |= bit;
7906         else
7907                 val &= ~bit;
7908         nw64_mac(reg, val);
7909 }
7910
7911 static int niu_phys_id(struct net_device *dev, u32 data)
7912 {
7913         struct niu *np = netdev_priv(dev);
7914         u64 orig_led_state;
7915         int i;
7916
7917         if (!netif_running(dev))
7918                 return -EAGAIN;
7919
7920         if (data == 0)
7921                 data = 2;
7922
7923         orig_led_state = niu_led_state_save(np);
7924         for (i = 0; i < (data * 2); i++) {
7925                 int on = ((i % 2) == 0);
7926
7927                 niu_force_led(np, on);
7928
7929                 if (msleep_interruptible(500))
7930                         break;
7931         }
7932         niu_led_state_restore(np, orig_led_state);
7933
7934         return 0;
7935 }
7936
7937 static const struct ethtool_ops niu_ethtool_ops = {
7938         .get_drvinfo            = niu_get_drvinfo,
7939         .get_link               = ethtool_op_get_link,
7940         .get_msglevel           = niu_get_msglevel,
7941         .set_msglevel           = niu_set_msglevel,
7942         .nway_reset             = niu_nway_reset,
7943         .get_eeprom_len         = niu_get_eeprom_len,
7944         .get_eeprom             = niu_get_eeprom,
7945         .get_settings           = niu_get_settings,
7946         .set_settings           = niu_set_settings,
7947         .get_strings            = niu_get_strings,
7948         .get_stats_count        = niu_get_stats_count,
7949         .get_ethtool_stats      = niu_get_ethtool_stats,
7950         .phys_id                = niu_phys_id,
7951         .get_rxnfc              = niu_get_nfc,
7952         .set_rxnfc              = niu_set_nfc,
7953 };
7954
7955 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7956                               int ldg, int ldn)
7957 {
7958         if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7959                 return -EINVAL;
7960         if (ldn < 0 || ldn > LDN_MAX)
7961                 return -EINVAL;
7962
7963         parent->ldg_map[ldn] = ldg;
7964
7965         if (np->parent->plat_type == PLAT_TYPE_NIU) {
7966                 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7967                  * the firmware, and we're not supposed to change them.
7968                  * Validate the mapping, because if it's wrong we probably
7969                  * won't get any interrupts and that's painful to debug.
7970                  */
7971                 if (nr64(LDG_NUM(ldn)) != ldg) {
7972                         dev_err(np->device, PFX "Port %u, mis-matched "
7973                                 "LDG assignment "
7974                                 "for ldn %d, should be %d is %llu\n",
7975                                 np->port, ldn, ldg,
7976                                 (unsigned long long) nr64(LDG_NUM(ldn)));
7977                         return -EINVAL;
7978                 }
7979         } else
7980                 nw64(LDG_NUM(ldn), ldg);
7981
7982         return 0;
7983 }
7984
7985 static int niu_set_ldg_timer_res(struct niu *np, int res)
7986 {
7987         if (res < 0 || res > LDG_TIMER_RES_VAL)
7988                 return -EINVAL;
7989
7990
7991         nw64(LDG_TIMER_RES, res);
7992
7993         return 0;
7994 }
7995
7996 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7997 {
7998         if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7999             (func < 0 || func > 3) ||
8000             (vector < 0 || vector > 0x1f))
8001                 return -EINVAL;
8002
8003         nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
8004
8005         return 0;
8006 }
8007
8008 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
8009 {
8010         u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
8011                                  (addr << ESPC_PIO_STAT_ADDR_SHIFT));
8012         int limit;
8013
8014         if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
8015                 return -EINVAL;
8016
8017         frame = frame_base;
8018         nw64(ESPC_PIO_STAT, frame);
8019         limit = 64;
8020         do {
8021                 udelay(5);
8022                 frame = nr64(ESPC_PIO_STAT);
8023                 if (frame & ESPC_PIO_STAT_READ_END)
8024                         break;
8025         } while (limit--);
8026         if (!(frame & ESPC_PIO_STAT_READ_END)) {
8027                 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
8028                         (unsigned long long) frame);
8029                 return -ENODEV;
8030         }
8031
8032         frame = frame_base;
8033         nw64(ESPC_PIO_STAT, frame);
8034         limit = 64;
8035         do {
8036                 udelay(5);
8037                 frame = nr64(ESPC_PIO_STAT);
8038                 if (frame & ESPC_PIO_STAT_READ_END)
8039                         break;
8040         } while (limit--);
8041         if (!(frame & ESPC_PIO_STAT_READ_END)) {
8042                 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
8043                         (unsigned long long) frame);
8044                 return -ENODEV;
8045         }
8046
8047         frame = nr64(ESPC_PIO_STAT);
8048         return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8049 }
8050
8051 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8052 {
8053         int err = niu_pci_eeprom_read(np, off);
8054         u16 val;
8055
8056         if (err < 0)
8057                 return err;
8058         val = (err << 8);
8059         err = niu_pci_eeprom_read(np, off + 1);
8060         if (err < 0)
8061                 return err;
8062         val |= (err & 0xff);
8063
8064         return val;
8065 }
8066
8067 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8068 {
8069         int err = niu_pci_eeprom_read(np, off);
8070         u16 val;
8071
8072         if (err < 0)
8073                 return err;
8074
8075         val = (err & 0xff);
8076         err = niu_pci_eeprom_read(np, off + 1);
8077         if (err < 0)
8078                 return err;
8079
8080         val |= (err & 0xff) << 8;
8081
8082         return val;
8083 }
8084
8085 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8086                                               u32 off,
8087                                               char *namebuf,
8088                                               int namebuf_len)
8089 {
8090         int i;
8091
8092         for (i = 0; i < namebuf_len; i++) {
8093                 int err = niu_pci_eeprom_read(np, off + i);
8094                 if (err < 0)
8095                         return err;
8096                 *namebuf++ = err;
8097                 if (!err)
8098                         break;
8099         }
8100         if (i >= namebuf_len)
8101                 return -EINVAL;
8102
8103         return i + 1;
8104 }
8105
8106 static void __devinit niu_vpd_parse_version(struct niu *np)
8107 {
8108         struct niu_vpd *vpd = &np->vpd;
8109         int len = strlen(vpd->version) + 1;
8110         const char *s = vpd->version;
8111         int i;
8112
8113         for (i = 0; i < len - 5; i++) {
8114                 if (!strncmp(s + i, "FCode ", 5))
8115                         break;
8116         }
8117         if (i >= len - 5)
8118                 return;
8119
8120         s += i + 5;
8121         sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8122
8123         niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8124                vpd->fcode_major, vpd->fcode_minor);
8125         if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8126             (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8127              vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8128                 np->flags |= NIU_FLAGS_VPD_VALID;
8129 }
8130
8131 /* ESPC_PIO_EN_ENABLE must be set */
8132 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8133                                             u32 start, u32 end)
8134 {
8135         unsigned int found_mask = 0;
8136 #define FOUND_MASK_MODEL        0x00000001
8137 #define FOUND_MASK_BMODEL       0x00000002
8138 #define FOUND_MASK_VERS         0x00000004
8139 #define FOUND_MASK_MAC          0x00000008
8140 #define FOUND_MASK_NMAC         0x00000010
8141 #define FOUND_MASK_PHY          0x00000020
8142 #define FOUND_MASK_ALL          0x0000003f
8143
8144         niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
8145                start, end);
8146         while (start < end) {
8147                 int len, err, instance, type, prop_len;
8148                 char namebuf[64];
8149                 u8 *prop_buf;
8150                 int max_len;
8151
8152                 if (found_mask == FOUND_MASK_ALL) {
8153                         niu_vpd_parse_version(np);
8154                         return 1;
8155                 }
8156
8157                 err = niu_pci_eeprom_read(np, start + 2);
8158                 if (err < 0)
8159                         return err;
8160                 len = err;
8161                 start += 3;
8162
8163                 instance = niu_pci_eeprom_read(np, start);
8164                 type = niu_pci_eeprom_read(np, start + 3);
8165                 prop_len = niu_pci_eeprom_read(np, start + 4);
8166                 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8167                 if (err < 0)
8168                         return err;
8169
8170                 prop_buf = NULL;
8171                 max_len = 0;
8172                 if (!strcmp(namebuf, "model")) {
8173                         prop_buf = np->vpd.model;
8174                         max_len = NIU_VPD_MODEL_MAX;
8175                         found_mask |= FOUND_MASK_MODEL;
8176                 } else if (!strcmp(namebuf, "board-model")) {
8177                         prop_buf = np->vpd.board_model;
8178                         max_len = NIU_VPD_BD_MODEL_MAX;
8179                         found_mask |= FOUND_MASK_BMODEL;
8180                 } else if (!strcmp(namebuf, "version")) {
8181                         prop_buf = np->vpd.version;
8182                         max_len = NIU_VPD_VERSION_MAX;
8183                         found_mask |= FOUND_MASK_VERS;
8184                 } else if (!strcmp(namebuf, "local-mac-address")) {
8185                         prop_buf = np->vpd.local_mac;
8186                         max_len = ETH_ALEN;
8187                         found_mask |= FOUND_MASK_MAC;
8188                 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8189                         prop_buf = &np->vpd.mac_num;
8190                         max_len = 1;
8191                         found_mask |= FOUND_MASK_NMAC;
8192                 } else if (!strcmp(namebuf, "phy-type")) {
8193                         prop_buf = np->vpd.phy_type;
8194                         max_len = NIU_VPD_PHY_TYPE_MAX;
8195                         found_mask |= FOUND_MASK_PHY;
8196                 }
8197
8198                 if (max_len && prop_len > max_len) {
8199                         dev_err(np->device, PFX "Property '%s' length (%d) is "
8200                                 "too long.\n", namebuf, prop_len);
8201                         return -EINVAL;
8202                 }
8203
8204                 if (prop_buf) {
8205                         u32 off = start + 5 + err;
8206                         int i;
8207
8208                         niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
8209                                "len[%d]\n", namebuf, prop_len);
8210                         for (i = 0; i < prop_len; i++)
8211                                 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8212                 }
8213
8214                 start += len;
8215         }
8216
8217         return 0;
8218 }
8219
8220 /* ESPC_PIO_EN_ENABLE must be set */
8221 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8222 {
8223         u32 offset;
8224         int err;
8225
8226         err = niu_pci_eeprom_read16_swp(np, start + 1);
8227         if (err < 0)
8228                 return;
8229
8230         offset = err + 3;
8231
8232         while (start + offset < ESPC_EEPROM_SIZE) {
8233                 u32 here = start + offset;
8234                 u32 end;
8235
8236                 err = niu_pci_eeprom_read(np, here);
8237                 if (err != 0x90)
8238                         return;
8239
8240                 err = niu_pci_eeprom_read16_swp(np, here + 1);
8241                 if (err < 0)
8242                         return;
8243
8244                 here = start + offset + 3;
8245                 end = start + offset + err;
8246
8247                 offset += err;
8248
8249                 err = niu_pci_vpd_scan_props(np, here, end);
8250                 if (err < 0 || err == 1)
8251                         return;
8252         }
8253 }
8254
8255 /* ESPC_PIO_EN_ENABLE must be set */
8256 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8257 {
8258         u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8259         int err;
8260
8261         while (start < end) {
8262                 ret = start;
8263
8264                 /* ROM header signature?  */
8265                 err = niu_pci_eeprom_read16(np, start +  0);
8266                 if (err != 0x55aa)
8267                         return 0;
8268
8269                 /* Apply offset to PCI data structure.  */
8270                 err = niu_pci_eeprom_read16(np, start + 23);
8271                 if (err < 0)
8272                         return 0;
8273                 start += err;
8274
8275                 /* Check for "PCIR" signature.  */
8276                 err = niu_pci_eeprom_read16(np, start +  0);
8277                 if (err != 0x5043)
8278                         return 0;
8279                 err = niu_pci_eeprom_read16(np, start +  2);
8280                 if (err != 0x4952)
8281                         return 0;
8282
8283                 /* Check for OBP image type.  */
8284                 err = niu_pci_eeprom_read(np, start + 20);
8285                 if (err < 0)
8286                         return 0;
8287                 if (err != 0x01) {
8288                         err = niu_pci_eeprom_read(np, ret + 2);
8289                         if (err < 0)
8290                                 return 0;
8291
8292                         start = ret + (err * 512);
8293                         continue;
8294                 }
8295
8296                 err = niu_pci_eeprom_read16_swp(np, start + 8);
8297                 if (err < 0)
8298                         return err;
8299                 ret += err;
8300
8301                 err = niu_pci_eeprom_read(np, ret + 0);
8302                 if (err != 0x82)
8303                         return 0;
8304
8305                 return ret;
8306         }
8307
8308         return 0;
8309 }
8310
8311 static int __devinit niu_phy_type_prop_decode(struct niu *np,
8312                                               const char *phy_prop)
8313 {
8314         if (!strcmp(phy_prop, "mif")) {
8315                 /* 1G copper, MII */
8316                 np->flags &= ~(NIU_FLAGS_FIBER |
8317                                NIU_FLAGS_10G);
8318                 np->mac_xcvr = MAC_XCVR_MII;
8319         } else if (!strcmp(phy_prop, "xgf")) {
8320                 /* 10G fiber, XPCS */
8321                 np->flags |= (NIU_FLAGS_10G |
8322                               NIU_FLAGS_FIBER);
8323                 np->mac_xcvr = MAC_XCVR_XPCS;
8324         } else if (!strcmp(phy_prop, "pcs")) {
8325                 /* 1G fiber, PCS */
8326                 np->flags &= ~NIU_FLAGS_10G;
8327                 np->flags |= NIU_FLAGS_FIBER;
8328                 np->mac_xcvr = MAC_XCVR_PCS;
8329         } else if (!strcmp(phy_prop, "xgc")) {
8330                 /* 10G copper, XPCS */
8331                 np->flags |= NIU_FLAGS_10G;
8332                 np->flags &= ~NIU_FLAGS_FIBER;
8333                 np->mac_xcvr = MAC_XCVR_XPCS;
8334         } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8335                 /* 10G Serdes or 1G Serdes, default to 10G */
8336                 np->flags |= NIU_FLAGS_10G;
8337                 np->flags &= ~NIU_FLAGS_FIBER;
8338                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8339                 np->mac_xcvr = MAC_XCVR_XPCS;
8340         } else {
8341                 return -EINVAL;
8342         }
8343         return 0;
8344 }
8345
8346 static int niu_pci_vpd_get_nports(struct niu *np)
8347 {
8348         int ports = 0;
8349
8350         if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8351             (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8352             (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8353             (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8354             (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8355                 ports = 4;
8356         } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8357                    (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8358                    (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8359                    (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8360                 ports = 2;
8361         }
8362
8363         return ports;
8364 }
8365
8366 static void __devinit niu_pci_vpd_validate(struct niu *np)
8367 {
8368         struct net_device *dev = np->dev;
8369         struct niu_vpd *vpd = &np->vpd;
8370         u8 val8;
8371
8372         if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8373                 dev_err(np->device, PFX "VPD MAC invalid, "
8374                         "falling back to SPROM.\n");
8375
8376                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8377                 return;
8378         }
8379
8380         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8381             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8382                 np->flags |= NIU_FLAGS_10G;
8383                 np->flags &= ~NIU_FLAGS_FIBER;
8384                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8385                 np->mac_xcvr = MAC_XCVR_PCS;
8386                 if (np->port > 1) {
8387                         np->flags |= NIU_FLAGS_FIBER;
8388                         np->flags &= ~NIU_FLAGS_10G;
8389                 }
8390                 if (np->flags & NIU_FLAGS_10G)
8391                          np->mac_xcvr = MAC_XCVR_XPCS;
8392         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8393                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8394                               NIU_FLAGS_HOTPLUG_PHY);
8395         } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8396                 dev_err(np->device, PFX "Illegal phy string [%s].\n",
8397                         np->vpd.phy_type);
8398                 dev_err(np->device, PFX "Falling back to SPROM.\n");
8399                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8400                 return;
8401         }
8402
8403         memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8404
8405         val8 = dev->perm_addr[5];
8406         dev->perm_addr[5] += np->port;
8407         if (dev->perm_addr[5] < val8)
8408                 dev->perm_addr[4]++;
8409
8410         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8411 }
8412
8413 static int __devinit niu_pci_probe_sprom(struct niu *np)
8414 {
8415         struct net_device *dev = np->dev;
8416         int len, i;
8417         u64 val, sum;
8418         u8 val8;
8419
8420         val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8421         val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8422         len = val / 4;
8423
8424         np->eeprom_len = len;
8425
8426         niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
8427
8428         sum = 0;
8429         for (i = 0; i < len; i++) {
8430                 val = nr64(ESPC_NCR(i));
8431                 sum += (val >>  0) & 0xff;
8432                 sum += (val >>  8) & 0xff;
8433                 sum += (val >> 16) & 0xff;
8434                 sum += (val >> 24) & 0xff;
8435         }
8436         niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
8437         if ((sum & 0xff) != 0xab) {
8438                 dev_err(np->device, PFX "Bad SPROM checksum "
8439                         "(%x, should be 0xab)\n", (int) (sum & 0xff));
8440                 return -EINVAL;
8441         }
8442
8443         val = nr64(ESPC_PHY_TYPE);
8444         switch (np->port) {
8445         case 0:
8446                 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8447                         ESPC_PHY_TYPE_PORT0_SHIFT;
8448                 break;
8449         case 1:
8450                 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8451                         ESPC_PHY_TYPE_PORT1_SHIFT;
8452                 break;
8453         case 2:
8454                 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8455                         ESPC_PHY_TYPE_PORT2_SHIFT;
8456                 break;
8457         case 3:
8458                 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8459                         ESPC_PHY_TYPE_PORT3_SHIFT;
8460                 break;
8461         default:
8462                 dev_err(np->device, PFX "Bogus port number %u\n",
8463                         np->port);
8464                 return -EINVAL;
8465         }
8466         niudbg(PROBE, "SPROM: PHY type %x\n", val8);
8467
8468         switch (val8) {
8469         case ESPC_PHY_TYPE_1G_COPPER:
8470                 /* 1G copper, MII */
8471                 np->flags &= ~(NIU_FLAGS_FIBER |
8472                                NIU_FLAGS_10G);
8473                 np->mac_xcvr = MAC_XCVR_MII;
8474                 break;
8475
8476         case ESPC_PHY_TYPE_1G_FIBER:
8477                 /* 1G fiber, PCS */
8478                 np->flags &= ~NIU_FLAGS_10G;
8479                 np->flags |= NIU_FLAGS_FIBER;
8480                 np->mac_xcvr = MAC_XCVR_PCS;
8481                 break;
8482
8483         case ESPC_PHY_TYPE_10G_COPPER:
8484                 /* 10G copper, XPCS */
8485                 np->flags |= NIU_FLAGS_10G;
8486                 np->flags &= ~NIU_FLAGS_FIBER;
8487                 np->mac_xcvr = MAC_XCVR_XPCS;
8488                 break;
8489
8490         case ESPC_PHY_TYPE_10G_FIBER:
8491                 /* 10G fiber, XPCS */
8492                 np->flags |= (NIU_FLAGS_10G |
8493                               NIU_FLAGS_FIBER);
8494                 np->mac_xcvr = MAC_XCVR_XPCS;
8495                 break;
8496
8497         default:
8498                 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
8499                 return -EINVAL;
8500         }
8501
8502         val = nr64(ESPC_MAC_ADDR0);
8503         niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
8504                (unsigned long long) val);
8505         dev->perm_addr[0] = (val >>  0) & 0xff;
8506         dev->perm_addr[1] = (val >>  8) & 0xff;
8507         dev->perm_addr[2] = (val >> 16) & 0xff;
8508         dev->perm_addr[3] = (val >> 24) & 0xff;
8509
8510         val = nr64(ESPC_MAC_ADDR1);
8511         niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
8512                (unsigned long long) val);
8513         dev->perm_addr[4] = (val >>  0) & 0xff;
8514         dev->perm_addr[5] = (val >>  8) & 0xff;
8515
8516         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8517                 dev_err(np->device, PFX "SPROM MAC address invalid\n");
8518                 dev_err(np->device, PFX "[ \n");
8519                 for (i = 0; i < 6; i++)
8520                         printk("%02x ", dev->perm_addr[i]);
8521                 printk("]\n");
8522                 return -EINVAL;
8523         }
8524
8525         val8 = dev->perm_addr[5];
8526         dev->perm_addr[5] += np->port;
8527         if (dev->perm_addr[5] < val8)
8528                 dev->perm_addr[4]++;
8529
8530         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8531
8532         val = nr64(ESPC_MOD_STR_LEN);
8533         niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
8534                (unsigned long long) val);
8535         if (val >= 8 * 4)
8536                 return -EINVAL;
8537
8538         for (i = 0; i < val; i += 4) {
8539                 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8540
8541                 np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
8542                 np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
8543                 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8544                 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8545         }
8546         np->vpd.model[val] = '\0';
8547
8548         val = nr64(ESPC_BD_MOD_STR_LEN);
8549         niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
8550                (unsigned long long) val);
8551         if (val >= 4 * 4)
8552                 return -EINVAL;
8553
8554         for (i = 0; i < val; i += 4) {
8555                 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8556
8557                 np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
8558                 np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
8559                 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8560                 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8561         }
8562         np->vpd.board_model[val] = '\0';
8563
8564         np->vpd.mac_num =
8565                 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8566         niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
8567                np->vpd.mac_num);
8568
8569         return 0;
8570 }
8571
8572 static int __devinit niu_get_and_validate_port(struct niu *np)
8573 {
8574         struct niu_parent *parent = np->parent;
8575
8576         if (np->port <= 1)
8577                 np->flags |= NIU_FLAGS_XMAC;
8578
8579         if (!parent->num_ports) {
8580                 if (parent->plat_type == PLAT_TYPE_NIU) {
8581                         parent->num_ports = 2;
8582                 } else {
8583                         parent->num_ports = niu_pci_vpd_get_nports(np);
8584                         if (!parent->num_ports) {
8585                                 /* Fall back to SPROM as last resort.
8586                                  * This will fail on most cards.
8587                                  */
8588                                 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8589                                         ESPC_NUM_PORTS_MACS_VAL;
8590
8591                                 /* All of the current probing methods fail on
8592                                  * Maramba on-board parts.
8593                                  */
8594                                 if (!parent->num_ports)
8595                                         parent->num_ports = 4;
8596                         }
8597                 }
8598         }
8599
8600         niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
8601                np->port, parent->num_ports);
8602         if (np->port >= parent->num_ports)
8603                 return -ENODEV;
8604
8605         return 0;
8606 }
8607
8608 static int __devinit phy_record(struct niu_parent *parent,
8609                                 struct phy_probe_info *p,
8610                                 int dev_id_1, int dev_id_2, u8 phy_port,
8611                                 int type)
8612 {
8613         u32 id = (dev_id_1 << 16) | dev_id_2;
8614         u8 idx;
8615
8616         if (dev_id_1 < 0 || dev_id_2 < 0)
8617                 return 0;
8618         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8619                 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8620                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
8621                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
8622                         return 0;
8623         } else {
8624                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8625                         return 0;
8626         }
8627
8628         pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8629                 parent->index, id,
8630                 (type == PHY_TYPE_PMA_PMD ?
8631                  "PMA/PMD" :
8632                  (type == PHY_TYPE_PCS ?
8633                   "PCS" : "MII")),
8634                 phy_port);
8635
8636         if (p->cur[type] >= NIU_MAX_PORTS) {
8637                 printk(KERN_ERR PFX "Too many PHY ports.\n");
8638                 return -EINVAL;
8639         }
8640         idx = p->cur[type];
8641         p->phy_id[type][idx] = id;
8642         p->phy_port[type][idx] = phy_port;
8643         p->cur[type] = idx + 1;
8644         return 0;
8645 }
8646
8647 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8648 {
8649         int i;
8650
8651         for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8652                 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8653                         return 1;
8654         }
8655         for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8656                 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8657                         return 1;
8658         }
8659
8660         return 0;
8661 }
8662
8663 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8664 {
8665         int port, cnt;
8666
8667         cnt = 0;
8668         *lowest = 32;
8669         for (port = 8; port < 32; port++) {
8670                 if (port_has_10g(p, port)) {
8671                         if (!cnt)
8672                                 *lowest = port;
8673                         cnt++;
8674                 }
8675         }
8676
8677         return cnt;
8678 }
8679
8680 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8681 {
8682         *lowest = 32;
8683         if (p->cur[PHY_TYPE_MII])
8684                 *lowest = p->phy_port[PHY_TYPE_MII][0];
8685
8686         return p->cur[PHY_TYPE_MII];
8687 }
8688
8689 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8690 {
8691         int num_ports = parent->num_ports;
8692         int i;
8693
8694         for (i = 0; i < num_ports; i++) {
8695                 parent->rxchan_per_port[i] = (16 / num_ports);
8696                 parent->txchan_per_port[i] = (16 / num_ports);
8697
8698                 pr_info(PFX "niu%d: Port %u [%u RX chans] "
8699                         "[%u TX chans]\n",
8700                         parent->index, i,
8701                         parent->rxchan_per_port[i],
8702                         parent->txchan_per_port[i]);
8703         }
8704 }
8705
8706 static void __devinit niu_divide_channels(struct niu_parent *parent,
8707                                           int num_10g, int num_1g)
8708 {
8709         int num_ports = parent->num_ports;
8710         int rx_chans_per_10g, rx_chans_per_1g;
8711         int tx_chans_per_10g, tx_chans_per_1g;
8712         int i, tot_rx, tot_tx;
8713
8714         if (!num_10g || !num_1g) {
8715                 rx_chans_per_10g = rx_chans_per_1g =
8716                         (NIU_NUM_RXCHAN / num_ports);
8717                 tx_chans_per_10g = tx_chans_per_1g =
8718                         (NIU_NUM_TXCHAN / num_ports);
8719         } else {
8720                 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8721                 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8722                                     (rx_chans_per_1g * num_1g)) /
8723                         num_10g;
8724
8725                 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8726                 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8727                                     (tx_chans_per_1g * num_1g)) /
8728                         num_10g;
8729         }
8730
8731         tot_rx = tot_tx = 0;
8732         for (i = 0; i < num_ports; i++) {
8733                 int type = phy_decode(parent->port_phy, i);
8734
8735                 if (type == PORT_TYPE_10G) {
8736                         parent->rxchan_per_port[i] = rx_chans_per_10g;
8737                         parent->txchan_per_port[i] = tx_chans_per_10g;
8738                 } else {
8739                         parent->rxchan_per_port[i] = rx_chans_per_1g;
8740                         parent->txchan_per_port[i] = tx_chans_per_1g;
8741                 }
8742                 pr_info(PFX "niu%d: Port %u [%u RX chans] "
8743                         "[%u TX chans]\n",
8744                         parent->index, i,
8745                         parent->rxchan_per_port[i],
8746                         parent->txchan_per_port[i]);
8747                 tot_rx += parent->rxchan_per_port[i];
8748                 tot_tx += parent->txchan_per_port[i];
8749         }
8750
8751         if (tot_rx > NIU_NUM_RXCHAN) {
8752                 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
8753                        "resetting to one per port.\n",
8754                        parent->index, tot_rx);
8755                 for (i = 0; i < num_ports; i++)
8756                         parent->rxchan_per_port[i] = 1;
8757         }
8758         if (tot_tx > NIU_NUM_TXCHAN) {
8759                 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
8760                        "resetting to one per port.\n",
8761                        parent->index, tot_tx);
8762                 for (i = 0; i < num_ports; i++)
8763                         parent->txchan_per_port[i] = 1;
8764         }
8765         if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8766                 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
8767                        "RX[%d] TX[%d]\n",
8768                        parent->index, tot_rx, tot_tx);
8769         }
8770 }
8771
8772 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8773                                             int num_10g, int num_1g)
8774 {
8775         int i, num_ports = parent->num_ports;
8776         int rdc_group, rdc_groups_per_port;
8777         int rdc_channel_base;
8778
8779         rdc_group = 0;
8780         rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8781
8782         rdc_channel_base = 0;
8783
8784         for (i = 0; i < num_ports; i++) {
8785                 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8786                 int grp, num_channels = parent->rxchan_per_port[i];
8787                 int this_channel_offset;
8788
8789                 tp->first_table_num = rdc_group;
8790                 tp->num_tables = rdc_groups_per_port;
8791                 this_channel_offset = 0;
8792                 for (grp = 0; grp < tp->num_tables; grp++) {
8793                         struct rdc_table *rt = &tp->tables[grp];
8794                         int slot;
8795
8796                         pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
8797                                 parent->index, i, tp->first_table_num + grp);
8798                         for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8799                                 rt->rxdma_channel[slot] =
8800                                         rdc_channel_base + this_channel_offset;
8801
8802                                 printk("%d ", rt->rxdma_channel[slot]);
8803
8804                                 if (++this_channel_offset == num_channels)
8805                                         this_channel_offset = 0;
8806                         }
8807                         printk("]\n");
8808                 }
8809
8810                 parent->rdc_default[i] = rdc_channel_base;
8811
8812                 rdc_channel_base += num_channels;
8813                 rdc_group += rdc_groups_per_port;
8814         }
8815 }
8816
8817 static int __devinit fill_phy_probe_info(struct niu *np,
8818                                          struct niu_parent *parent,
8819                                          struct phy_probe_info *info)
8820 {
8821         unsigned long flags;
8822         int port, err;
8823
8824         memset(info, 0, sizeof(*info));
8825
8826         /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
8827         niu_lock_parent(np, flags);
8828         err = 0;
8829         for (port = 8; port < 32; port++) {
8830                 int dev_id_1, dev_id_2;
8831
8832                 dev_id_1 = mdio_read(np, port,
8833                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8834                 dev_id_2 = mdio_read(np, port,
8835                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8836                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8837                                  PHY_TYPE_PMA_PMD);
8838                 if (err)
8839                         break;
8840                 dev_id_1 = mdio_read(np, port,
8841                                      NIU_PCS_DEV_ADDR, MII_PHYSID1);
8842                 dev_id_2 = mdio_read(np, port,
8843                                      NIU_PCS_DEV_ADDR, MII_PHYSID2);
8844                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8845                                  PHY_TYPE_PCS);
8846                 if (err)
8847                         break;
8848                 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8849                 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8850                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8851                                  PHY_TYPE_MII);
8852                 if (err)
8853                         break;
8854         }
8855         niu_unlock_parent(np, flags);
8856
8857         return err;
8858 }
8859
8860 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8861 {
8862         struct phy_probe_info *info = &parent->phy_probe_info;
8863         int lowest_10g, lowest_1g;
8864         int num_10g, num_1g;
8865         u32 val;
8866         int err;
8867
8868         num_10g = num_1g = 0;
8869
8870         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8871             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8872                 num_10g = 0;
8873                 num_1g = 2;
8874                 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8875                 parent->num_ports = 4;
8876                 val = (phy_encode(PORT_TYPE_1G, 0) |
8877                        phy_encode(PORT_TYPE_1G, 1) |
8878                        phy_encode(PORT_TYPE_1G, 2) |
8879                        phy_encode(PORT_TYPE_1G, 3));
8880         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8881                 num_10g = 2;
8882                 num_1g = 0;
8883                 parent->num_ports = 2;
8884                 val = (phy_encode(PORT_TYPE_10G, 0) |
8885                        phy_encode(PORT_TYPE_10G, 1));
8886         } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8887                    (parent->plat_type == PLAT_TYPE_NIU)) {
8888                 /* this is the Monza case */
8889                 if (np->flags & NIU_FLAGS_10G) {
8890                         val = (phy_encode(PORT_TYPE_10G, 0) |
8891                                phy_encode(PORT_TYPE_10G, 1));
8892                 } else {
8893                         val = (phy_encode(PORT_TYPE_1G, 0) |
8894                                phy_encode(PORT_TYPE_1G, 1));
8895                 }
8896         } else {
8897                 err = fill_phy_probe_info(np, parent, info);
8898                 if (err)
8899                         return err;
8900
8901                 num_10g = count_10g_ports(info, &lowest_10g);
8902                 num_1g = count_1g_ports(info, &lowest_1g);
8903
8904                 switch ((num_10g << 4) | num_1g) {
8905                 case 0x24:
8906                         if (lowest_1g == 10)
8907                                 parent->plat_type = PLAT_TYPE_VF_P0;
8908                         else if (lowest_1g == 26)
8909                                 parent->plat_type = PLAT_TYPE_VF_P1;
8910                         else
8911                                 goto unknown_vg_1g_port;
8912
8913                         /* fallthru */
8914                 case 0x22:
8915                         val = (phy_encode(PORT_TYPE_10G, 0) |
8916                                phy_encode(PORT_TYPE_10G, 1) |
8917                                phy_encode(PORT_TYPE_1G, 2) |
8918                                phy_encode(PORT_TYPE_1G, 3));
8919                         break;
8920
8921                 case 0x20:
8922                         val = (phy_encode(PORT_TYPE_10G, 0) |
8923                                phy_encode(PORT_TYPE_10G, 1));
8924                         break;
8925
8926                 case 0x10:
8927                         val = phy_encode(PORT_TYPE_10G, np->port);
8928                         break;
8929
8930                 case 0x14:
8931                         if (lowest_1g == 10)
8932                                 parent->plat_type = PLAT_TYPE_VF_P0;
8933                         else if (lowest_1g == 26)
8934                                 parent->plat_type = PLAT_TYPE_VF_P1;
8935                         else
8936                                 goto unknown_vg_1g_port;
8937
8938                         /* fallthru */
8939                 case 0x13:
8940                         if ((lowest_10g & 0x7) == 0)
8941                                 val = (phy_encode(PORT_TYPE_10G, 0) |
8942                                        phy_encode(PORT_TYPE_1G, 1) |
8943                                        phy_encode(PORT_TYPE_1G, 2) |
8944                                        phy_encode(PORT_TYPE_1G, 3));
8945                         else
8946                                 val = (phy_encode(PORT_TYPE_1G, 0) |
8947                                        phy_encode(PORT_TYPE_10G, 1) |
8948                                        phy_encode(PORT_TYPE_1G, 2) |
8949                                        phy_encode(PORT_TYPE_1G, 3));
8950                         break;
8951
8952                 case 0x04:
8953                         if (lowest_1g == 10)
8954                                 parent->plat_type = PLAT_TYPE_VF_P0;
8955                         else if (lowest_1g == 26)
8956                                 parent->plat_type = PLAT_TYPE_VF_P1;
8957                         else
8958                                 goto unknown_vg_1g_port;
8959
8960                         val = (phy_encode(PORT_TYPE_1G, 0) |
8961                                phy_encode(PORT_TYPE_1G, 1) |
8962                                phy_encode(PORT_TYPE_1G, 2) |
8963                                phy_encode(PORT_TYPE_1G, 3));
8964                         break;
8965
8966                 default:
8967                         printk(KERN_ERR PFX "Unsupported port config "
8968                                "10G[%d] 1G[%d]\n",
8969                                num_10g, num_1g);
8970                         return -EINVAL;
8971                 }
8972         }
8973
8974         parent->port_phy = val;
8975
8976         if (parent->plat_type == PLAT_TYPE_NIU)
8977                 niu_n2_divide_channels(parent);
8978         else
8979                 niu_divide_channels(parent, num_10g, num_1g);
8980
8981         niu_divide_rdc_groups(parent, num_10g, num_1g);
8982
8983         return 0;
8984
8985 unknown_vg_1g_port:
8986         printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
8987                lowest_1g);
8988         return -EINVAL;
8989 }
8990
8991 static int __devinit niu_probe_ports(struct niu *np)
8992 {
8993         struct niu_parent *parent = np->parent;
8994         int err, i;
8995
8996         niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
8997                parent->port_phy);
8998
8999         if (parent->port_phy == PORT_PHY_UNKNOWN) {
9000                 err = walk_phys(np, parent);
9001                 if (err)
9002                         return err;
9003
9004                 niu_set_ldg_timer_res(np, 2);
9005                 for (i = 0; i <= LDN_MAX; i++)
9006                         niu_ldn_irq_enable(np, i, 0);
9007         }
9008
9009         if (parent->port_phy == PORT_PHY_INVALID)
9010                 return -EINVAL;
9011
9012         return 0;
9013 }
9014
9015 static int __devinit niu_classifier_swstate_init(struct niu *np)
9016 {
9017         struct niu_classifier *cp = &np->clas;
9018
9019         niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
9020                np->parent->tcam_num_entries);
9021
9022         cp->tcam_top = (u16) np->port;
9023         cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
9024         cp->h1_init = 0xffffffff;
9025         cp->h2_init = 0xffff;
9026
9027         return fflp_early_init(np);
9028 }
9029
9030 static void __devinit niu_link_config_init(struct niu *np)
9031 {
9032         struct niu_link_config *lp = &np->link_config;
9033
9034         lp->advertising = (ADVERTISED_10baseT_Half |
9035                            ADVERTISED_10baseT_Full |
9036                            ADVERTISED_100baseT_Half |
9037                            ADVERTISED_100baseT_Full |
9038                            ADVERTISED_1000baseT_Half |
9039                            ADVERTISED_1000baseT_Full |
9040                            ADVERTISED_10000baseT_Full |
9041                            ADVERTISED_Autoneg);
9042         lp->speed = lp->active_speed = SPEED_INVALID;
9043         lp->duplex = DUPLEX_FULL;
9044         lp->active_duplex = DUPLEX_INVALID;
9045         lp->autoneg = 1;
9046 #if 0
9047         lp->loopback_mode = LOOPBACK_MAC;
9048         lp->active_speed = SPEED_10000;
9049         lp->active_duplex = DUPLEX_FULL;
9050 #else
9051         lp->loopback_mode = LOOPBACK_DISABLED;
9052 #endif
9053 }
9054
9055 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
9056 {
9057         switch (np->port) {
9058         case 0:
9059                 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9060                 np->ipp_off  = 0x00000;
9061                 np->pcs_off  = 0x04000;
9062                 np->xpcs_off = 0x02000;
9063                 break;
9064
9065         case 1:
9066                 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9067                 np->ipp_off  = 0x08000;
9068                 np->pcs_off  = 0x0a000;
9069                 np->xpcs_off = 0x08000;
9070                 break;
9071
9072         case 2:
9073                 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9074                 np->ipp_off  = 0x04000;
9075                 np->pcs_off  = 0x0e000;
9076                 np->xpcs_off = ~0UL;
9077                 break;
9078
9079         case 3:
9080                 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9081                 np->ipp_off  = 0x0c000;
9082                 np->pcs_off  = 0x12000;
9083                 np->xpcs_off = ~0UL;
9084                 break;
9085
9086         default:
9087                 dev_err(np->device, PFX "Port %u is invalid, cannot "
9088                         "compute MAC block offset.\n", np->port);
9089                 return -EINVAL;
9090         }
9091
9092         return 0;
9093 }
9094
9095 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9096 {
9097         struct msix_entry msi_vec[NIU_NUM_LDG];
9098         struct niu_parent *parent = np->parent;
9099         struct pci_dev *pdev = np->pdev;
9100         int i, num_irqs, err;
9101         u8 first_ldg;
9102
9103         first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9104         for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9105                 ldg_num_map[i] = first_ldg + i;
9106
9107         num_irqs = (parent->rxchan_per_port[np->port] +
9108                     parent->txchan_per_port[np->port] +
9109                     (np->port == 0 ? 3 : 1));
9110         BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9111
9112 retry:
9113         for (i = 0; i < num_irqs; i++) {
9114                 msi_vec[i].vector = 0;
9115                 msi_vec[i].entry = i;
9116         }
9117
9118         err = pci_enable_msix(pdev, msi_vec, num_irqs);
9119         if (err < 0) {
9120                 np->flags &= ~NIU_FLAGS_MSIX;
9121                 return;
9122         }
9123         if (err > 0) {
9124                 num_irqs = err;
9125                 goto retry;
9126         }
9127
9128         np->flags |= NIU_FLAGS_MSIX;
9129         for (i = 0; i < num_irqs; i++)
9130                 np->ldg[i].irq = msi_vec[i].vector;
9131         np->num_ldg = num_irqs;
9132 }
9133
9134 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9135 {
9136 #ifdef CONFIG_SPARC64
9137         struct of_device *op = np->op;
9138         const u32 *int_prop;
9139         int i;
9140
9141         int_prop = of_get_property(op->node, "interrupts", NULL);
9142         if (!int_prop)
9143                 return -ENODEV;
9144
9145         for (i = 0; i < op->num_irqs; i++) {
9146                 ldg_num_map[i] = int_prop[i];
9147                 np->ldg[i].irq = op->irqs[i];
9148         }
9149
9150         np->num_ldg = op->num_irqs;
9151
9152         return 0;
9153 #else
9154         return -EINVAL;
9155 #endif
9156 }
9157
9158 static int __devinit niu_ldg_init(struct niu *np)
9159 {
9160         struct niu_parent *parent = np->parent;
9161         u8 ldg_num_map[NIU_NUM_LDG];
9162         int first_chan, num_chan;
9163         int i, err, ldg_rotor;
9164         u8 port;
9165
9166         np->num_ldg = 1;
9167         np->ldg[0].irq = np->dev->irq;
9168         if (parent->plat_type == PLAT_TYPE_NIU) {
9169                 err = niu_n2_irq_init(np, ldg_num_map);
9170                 if (err)
9171                         return err;
9172         } else
9173                 niu_try_msix(np, ldg_num_map);
9174
9175         port = np->port;
9176         for (i = 0; i < np->num_ldg; i++) {
9177                 struct niu_ldg *lp = &np->ldg[i];
9178
9179                 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9180
9181                 lp->np = np;
9182                 lp->ldg_num = ldg_num_map[i];
9183                 lp->timer = 2; /* XXX */
9184
9185                 /* On N2 NIU the firmware has setup the SID mappings so they go
9186                  * to the correct values that will route the LDG to the proper
9187                  * interrupt in the NCU interrupt table.
9188                  */
9189                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9190                         err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9191                         if (err)
9192                                 return err;
9193                 }
9194         }
9195
9196         /* We adopt the LDG assignment ordering used by the N2 NIU
9197          * 'interrupt' properties because that simplifies a lot of
9198          * things.  This ordering is:
9199          *
9200          *      MAC
9201          *      MIF     (if port zero)
9202          *      SYSERR  (if port zero)
9203          *      RX channels
9204          *      TX channels
9205          */
9206
9207         ldg_rotor = 0;
9208
9209         err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9210                                   LDN_MAC(port));
9211         if (err)
9212                 return err;
9213
9214         ldg_rotor++;
9215         if (ldg_rotor == np->num_ldg)
9216                 ldg_rotor = 0;
9217
9218         if (port == 0) {
9219                 err = niu_ldg_assign_ldn(np, parent,
9220                                          ldg_num_map[ldg_rotor],
9221                                          LDN_MIF);
9222                 if (err)
9223                         return err;
9224
9225                 ldg_rotor++;
9226                 if (ldg_rotor == np->num_ldg)
9227                         ldg_rotor = 0;
9228
9229                 err = niu_ldg_assign_ldn(np, parent,
9230                                          ldg_num_map[ldg_rotor],
9231                                          LDN_DEVICE_ERROR);
9232                 if (err)
9233                         return err;
9234
9235                 ldg_rotor++;
9236                 if (ldg_rotor == np->num_ldg)
9237                         ldg_rotor = 0;
9238
9239         }
9240
9241         first_chan = 0;
9242         for (i = 0; i < port; i++)
9243                 first_chan += parent->rxchan_per_port[port];
9244         num_chan = parent->rxchan_per_port[port];
9245
9246         for (i = first_chan; i < (first_chan + num_chan); i++) {
9247                 err = niu_ldg_assign_ldn(np, parent,
9248                                          ldg_num_map[ldg_rotor],
9249                                          LDN_RXDMA(i));
9250                 if (err)
9251                         return err;
9252                 ldg_rotor++;
9253                 if (ldg_rotor == np->num_ldg)
9254                         ldg_rotor = 0;
9255         }
9256
9257         first_chan = 0;
9258         for (i = 0; i < port; i++)
9259                 first_chan += parent->txchan_per_port[port];
9260         num_chan = parent->txchan_per_port[port];
9261         for (i = first_chan; i < (first_chan + num_chan); i++) {
9262                 err = niu_ldg_assign_ldn(np, parent,
9263                                          ldg_num_map[ldg_rotor],
9264                                          LDN_TXDMA(i));
9265                 if (err)
9266                         return err;
9267                 ldg_rotor++;
9268                 if (ldg_rotor == np->num_ldg)
9269                         ldg_rotor = 0;
9270         }
9271
9272         return 0;
9273 }
9274
9275 static void __devexit niu_ldg_free(struct niu *np)
9276 {
9277         if (np->flags & NIU_FLAGS_MSIX)
9278                 pci_disable_msix(np->pdev);
9279 }
9280
9281 static int __devinit niu_get_of_props(struct niu *np)
9282 {
9283 #ifdef CONFIG_SPARC64
9284         struct net_device *dev = np->dev;
9285         struct device_node *dp;
9286         const char *phy_type;
9287         const u8 *mac_addr;
9288         const char *model;
9289         int prop_len;
9290
9291         if (np->parent->plat_type == PLAT_TYPE_NIU)
9292                 dp = np->op->node;
9293         else
9294                 dp = pci_device_to_OF_node(np->pdev);
9295
9296         phy_type = of_get_property(dp, "phy-type", &prop_len);
9297         if (!phy_type) {
9298                 dev_err(np->device, PFX "%s: OF node lacks "
9299                         "phy-type property\n",
9300                         dp->full_name);
9301                 return -EINVAL;
9302         }
9303
9304         if (!strcmp(phy_type, "none"))
9305                 return -ENODEV;
9306
9307         strcpy(np->vpd.phy_type, phy_type);
9308
9309         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9310                 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
9311                         dp->full_name, np->vpd.phy_type);
9312                 return -EINVAL;
9313         }
9314
9315         mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9316         if (!mac_addr) {
9317                 dev_err(np->device, PFX "%s: OF node lacks "
9318                         "local-mac-address property\n",
9319                         dp->full_name);
9320                 return -EINVAL;
9321         }
9322         if (prop_len != dev->addr_len) {
9323                 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
9324                         "is wrong.\n",
9325                         dp->full_name, prop_len);
9326         }
9327         memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9328         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9329                 int i;
9330
9331                 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
9332                         dp->full_name);
9333                 dev_err(np->device, PFX "%s: [ \n",
9334                         dp->full_name);
9335                 for (i = 0; i < 6; i++)
9336                         printk("%02x ", dev->perm_addr[i]);
9337                 printk("]\n");
9338                 return -EINVAL;
9339         }
9340
9341         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9342
9343         model = of_get_property(dp, "model", &prop_len);
9344
9345         if (model)
9346                 strcpy(np->vpd.model, model);
9347
9348         return 0;
9349 #else
9350         return -EINVAL;
9351 #endif
9352 }
9353
9354 static int __devinit niu_get_invariants(struct niu *np)
9355 {
9356         int err, have_props;
9357         u32 offset;
9358
9359         err = niu_get_of_props(np);
9360         if (err == -ENODEV)
9361                 return err;
9362
9363         have_props = !err;
9364
9365         err = niu_init_mac_ipp_pcs_base(np);
9366         if (err)
9367                 return err;
9368
9369         if (have_props) {
9370                 err = niu_get_and_validate_port(np);
9371                 if (err)
9372                         return err;
9373
9374         } else  {
9375                 if (np->parent->plat_type == PLAT_TYPE_NIU)
9376                         return -EINVAL;
9377
9378                 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9379                 offset = niu_pci_vpd_offset(np);
9380                 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
9381                        offset);
9382                 if (offset)
9383                         niu_pci_vpd_fetch(np, offset);
9384                 nw64(ESPC_PIO_EN, 0);
9385
9386                 if (np->flags & NIU_FLAGS_VPD_VALID) {
9387                         niu_pci_vpd_validate(np);
9388                         err = niu_get_and_validate_port(np);
9389                         if (err)
9390                                 return err;
9391                 }
9392
9393                 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9394                         err = niu_get_and_validate_port(np);
9395                         if (err)
9396                                 return err;
9397                         err = niu_pci_probe_sprom(np);
9398                         if (err)
9399                                 return err;
9400                 }
9401         }
9402
9403         err = niu_probe_ports(np);
9404         if (err)
9405                 return err;
9406
9407         niu_ldg_init(np);
9408
9409         niu_classifier_swstate_init(np);
9410         niu_link_config_init(np);
9411
9412         err = niu_determine_phy_disposition(np);
9413         if (!err)
9414                 err = niu_init_link(np);
9415
9416         return err;
9417 }
9418
9419 static LIST_HEAD(niu_parent_list);
9420 static DEFINE_MUTEX(niu_parent_lock);
9421 static int niu_parent_index;
9422
9423 static ssize_t show_port_phy(struct device *dev,
9424                              struct device_attribute *attr, char *buf)
9425 {
9426         struct platform_device *plat_dev = to_platform_device(dev);
9427         struct niu_parent *p = plat_dev->dev.platform_data;
9428         u32 port_phy = p->port_phy;
9429         char *orig_buf = buf;
9430         int i;
9431
9432         if (port_phy == PORT_PHY_UNKNOWN ||
9433             port_phy == PORT_PHY_INVALID)
9434                 return 0;
9435
9436         for (i = 0; i < p->num_ports; i++) {
9437                 const char *type_str;
9438                 int type;
9439
9440                 type = phy_decode(port_phy, i);
9441                 if (type == PORT_TYPE_10G)
9442                         type_str = "10G";
9443                 else
9444                         type_str = "1G";
9445                 buf += sprintf(buf,
9446                                (i == 0) ? "%s" : " %s",
9447                                type_str);
9448         }
9449         buf += sprintf(buf, "\n");
9450         return buf - orig_buf;
9451 }
9452
9453 static ssize_t show_plat_type(struct device *dev,
9454                               struct device_attribute *attr, char *buf)
9455 {
9456         struct platform_device *plat_dev = to_platform_device(dev);
9457         struct niu_parent *p = plat_dev->dev.platform_data;
9458         const char *type_str;
9459
9460         switch (p->plat_type) {
9461         case PLAT_TYPE_ATLAS:
9462                 type_str = "atlas";
9463                 break;
9464         case PLAT_TYPE_NIU:
9465                 type_str = "niu";
9466                 break;
9467         case PLAT_TYPE_VF_P0:
9468                 type_str = "vf_p0";
9469                 break;
9470         case PLAT_TYPE_VF_P1:
9471                 type_str = "vf_p1";
9472                 break;
9473         default:
9474                 type_str = "unknown";
9475                 break;
9476         }
9477
9478         return sprintf(buf, "%s\n", type_str);
9479 }
9480
9481 static ssize_t __show_chan_per_port(struct device *dev,
9482                                     struct device_attribute *attr, char *buf,
9483                                     int rx)
9484 {
9485         struct platform_device *plat_dev = to_platform_device(dev);
9486         struct niu_parent *p = plat_dev->dev.platform_data;
9487         char *orig_buf = buf;
9488         u8 *arr;
9489         int i;
9490
9491         arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9492
9493         for (i = 0; i < p->num_ports; i++) {
9494                 buf += sprintf(buf,
9495                                (i == 0) ? "%d" : " %d",
9496                                arr[i]);
9497         }
9498         buf += sprintf(buf, "\n");
9499
9500         return buf - orig_buf;
9501 }
9502
9503 static ssize_t show_rxchan_per_port(struct device *dev,
9504                                     struct device_attribute *attr, char *buf)
9505 {
9506         return __show_chan_per_port(dev, attr, buf, 1);
9507 }
9508
9509 static ssize_t show_txchan_per_port(struct device *dev,
9510                                     struct device_attribute *attr, char *buf)
9511 {
9512         return __show_chan_per_port(dev, attr, buf, 1);
9513 }
9514
9515 static ssize_t show_num_ports(struct device *dev,
9516                               struct device_attribute *attr, char *buf)
9517 {
9518         struct platform_device *plat_dev = to_platform_device(dev);
9519         struct niu_parent *p = plat_dev->dev.platform_data;
9520
9521         return sprintf(buf, "%d\n", p->num_ports);
9522 }
9523
9524 static struct device_attribute niu_parent_attributes[] = {
9525         __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9526         __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9527         __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9528         __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9529         __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9530         {}
9531 };
9532
9533 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9534                                                     union niu_parent_id *id,
9535                                                     u8 ptype)
9536 {
9537         struct platform_device *plat_dev;
9538         struct niu_parent *p;
9539         int i;
9540
9541         niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
9542
9543         plat_dev = platform_device_register_simple("niu", niu_parent_index,
9544                                                    NULL, 0);
9545         if (!plat_dev)
9546                 return NULL;
9547
9548         for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9549                 int err = device_create_file(&plat_dev->dev,
9550                                              &niu_parent_attributes[i]);
9551                 if (err)
9552                         goto fail_unregister;
9553         }
9554
9555         p = kzalloc(sizeof(*p), GFP_KERNEL);
9556         if (!p)
9557                 goto fail_unregister;
9558
9559         p->index = niu_parent_index++;
9560
9561         plat_dev->dev.platform_data = p;
9562         p->plat_dev = plat_dev;
9563
9564         memcpy(&p->id, id, sizeof(*id));
9565         p->plat_type = ptype;
9566         INIT_LIST_HEAD(&p->list);
9567         atomic_set(&p->refcnt, 0);
9568         list_add(&p->list, &niu_parent_list);
9569         spin_lock_init(&p->lock);
9570
9571         p->rxdma_clock_divider = 7500;
9572
9573         p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9574         if (p->plat_type == PLAT_TYPE_NIU)
9575                 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9576
9577         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9578                 int index = i - CLASS_CODE_USER_PROG1;
9579
9580                 p->tcam_key[index] = TCAM_KEY_TSEL;
9581                 p->flow_key[index] = (FLOW_KEY_IPSA |
9582                                       FLOW_KEY_IPDA |
9583                                       FLOW_KEY_PROTO |
9584                                       (FLOW_KEY_L4_BYTE12 <<
9585                                        FLOW_KEY_L4_0_SHIFT) |
9586                                       (FLOW_KEY_L4_BYTE12 <<
9587                                        FLOW_KEY_L4_1_SHIFT));
9588         }
9589
9590         for (i = 0; i < LDN_MAX + 1; i++)
9591                 p->ldg_map[i] = LDG_INVALID;
9592
9593         return p;
9594
9595 fail_unregister:
9596         platform_device_unregister(plat_dev);
9597         return NULL;
9598 }
9599
9600 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9601                                                     union niu_parent_id *id,
9602                                                     u8 ptype)
9603 {
9604         struct niu_parent *p, *tmp;
9605         int port = np->port;
9606
9607         niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
9608                ptype, port);
9609
9610         mutex_lock(&niu_parent_lock);
9611         p = NULL;
9612         list_for_each_entry(tmp, &niu_parent_list, list) {
9613                 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9614                         p = tmp;
9615                         break;
9616                 }
9617         }
9618         if (!p)
9619                 p = niu_new_parent(np, id, ptype);
9620
9621         if (p) {
9622                 char port_name[6];
9623                 int err;
9624
9625                 sprintf(port_name, "port%d", port);
9626                 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9627                                         &np->device->kobj,
9628                                         port_name);
9629                 if (!err) {
9630                         p->ports[port] = np;
9631                         atomic_inc(&p->refcnt);
9632                 }
9633         }
9634         mutex_unlock(&niu_parent_lock);
9635
9636         return p;
9637 }
9638
9639 static void niu_put_parent(struct niu *np)
9640 {
9641         struct niu_parent *p = np->parent;
9642         u8 port = np->port;
9643         char port_name[6];
9644
9645         BUG_ON(!p || p->ports[port] != np);
9646
9647         niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
9648
9649         sprintf(port_name, "port%d", port);
9650
9651         mutex_lock(&niu_parent_lock);
9652
9653         sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9654
9655         p->ports[port] = NULL;
9656         np->parent = NULL;
9657
9658         if (atomic_dec_and_test(&p->refcnt)) {
9659                 list_del(&p->list);
9660                 platform_device_unregister(p->plat_dev);
9661         }
9662
9663         mutex_unlock(&niu_parent_lock);
9664 }
9665
9666 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9667                                     u64 *handle, gfp_t flag)
9668 {
9669         dma_addr_t dh;
9670         void *ret;
9671
9672         ret = dma_alloc_coherent(dev, size, &dh, flag);
9673         if (ret)
9674                 *handle = dh;
9675         return ret;
9676 }
9677
9678 static void niu_pci_free_coherent(struct device *dev, size_t size,
9679                                   void *cpu_addr, u64 handle)
9680 {
9681         dma_free_coherent(dev, size, cpu_addr, handle);
9682 }
9683
9684 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9685                             unsigned long offset, size_t size,
9686                             enum dma_data_direction direction)
9687 {
9688         return dma_map_page(dev, page, offset, size, direction);
9689 }
9690
9691 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9692                                size_t size, enum dma_data_direction direction)
9693 {
9694         dma_unmap_page(dev, dma_address, size, direction);
9695 }
9696
9697 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9698                               size_t size,
9699                               enum dma_data_direction direction)
9700 {
9701         return dma_map_single(dev, cpu_addr, size, direction);
9702 }
9703
9704 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9705                                  size_t size,
9706                                  enum dma_data_direction direction)
9707 {
9708         dma_unmap_single(dev, dma_address, size, direction);
9709 }
9710
9711 static const struct niu_ops niu_pci_ops = {
9712         .alloc_coherent = niu_pci_alloc_coherent,
9713         .free_coherent  = niu_pci_free_coherent,
9714         .map_page       = niu_pci_map_page,
9715         .unmap_page     = niu_pci_unmap_page,
9716         .map_single     = niu_pci_map_single,
9717         .unmap_single   = niu_pci_unmap_single,
9718 };
9719
9720 static void __devinit niu_driver_version(void)
9721 {
9722         static int niu_version_printed;
9723
9724         if (niu_version_printed++ == 0)
9725                 pr_info("%s", version);
9726 }
9727
9728 static struct net_device * __devinit niu_alloc_and_init(
9729         struct device *gen_dev, struct pci_dev *pdev,
9730         struct of_device *op, const struct niu_ops *ops,
9731         u8 port)
9732 {
9733         struct net_device *dev;
9734         struct niu *np;
9735
9736         dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9737         if (!dev) {
9738                 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
9739                 return NULL;
9740         }
9741
9742         SET_NETDEV_DEV(dev, gen_dev);
9743
9744         np = netdev_priv(dev);
9745         np->dev = dev;
9746         np->pdev = pdev;
9747         np->op = op;
9748         np->device = gen_dev;
9749         np->ops = ops;
9750
9751         np->msg_enable = niu_debug;
9752
9753         spin_lock_init(&np->lock);
9754         INIT_WORK(&np->reset_task, niu_reset_task);
9755
9756         np->port = port;
9757
9758         return dev;
9759 }
9760
9761 static const struct net_device_ops niu_netdev_ops = {
9762         .ndo_open               = niu_open,
9763         .ndo_stop               = niu_close,
9764         .ndo_start_xmit         = niu_start_xmit,
9765         .ndo_get_stats          = niu_get_stats,
9766         .ndo_set_multicast_list = niu_set_rx_mode,
9767         .ndo_validate_addr      = eth_validate_addr,
9768         .ndo_set_mac_address    = niu_set_mac_addr,
9769         .ndo_do_ioctl           = niu_ioctl,
9770         .ndo_tx_timeout         = niu_tx_timeout,
9771         .ndo_change_mtu         = niu_change_mtu,
9772 };
9773
9774 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9775 {
9776         dev->netdev_ops = &niu_netdev_ops;
9777         dev->ethtool_ops = &niu_ethtool_ops;
9778         dev->watchdog_timeo = NIU_TX_TIMEOUT;
9779 }
9780
9781 static void __devinit niu_device_announce(struct niu *np)
9782 {
9783         struct net_device *dev = np->dev;
9784
9785         pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9786
9787         if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9788                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9789                                 dev->name,
9790                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9791                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9792                                 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9793                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9794                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9795                                 np->vpd.phy_type);
9796         } else {
9797                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9798                                 dev->name,
9799                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9800                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9801                                 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9802                                  (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9803                                   "COPPER")),
9804                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9805                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9806                                 np->vpd.phy_type);
9807         }
9808 }
9809
9810 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9811                                       const struct pci_device_id *ent)
9812 {
9813         union niu_parent_id parent_id;
9814         struct net_device *dev;
9815         struct niu *np;
9816         int err, pos;
9817         u64 dma_mask;
9818         u16 val16;
9819
9820         niu_driver_version();
9821
9822         err = pci_enable_device(pdev);
9823         if (err) {
9824                 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
9825                         "aborting.\n");
9826                 return err;
9827         }
9828
9829         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9830             !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9831                 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
9832                         "base addresses, aborting.\n");
9833                 err = -ENODEV;
9834                 goto err_out_disable_pdev;
9835         }
9836
9837         err = pci_request_regions(pdev, DRV_MODULE_NAME);
9838         if (err) {
9839                 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
9840                         "aborting.\n");
9841                 goto err_out_disable_pdev;
9842         }
9843
9844         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
9845         if (pos <= 0) {
9846                 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
9847                         "aborting.\n");
9848                 goto err_out_free_res;
9849         }
9850
9851         dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9852                                  &niu_pci_ops, PCI_FUNC(pdev->devfn));
9853         if (!dev) {
9854                 err = -ENOMEM;
9855                 goto err_out_free_res;
9856         }
9857         np = netdev_priv(dev);
9858
9859         memset(&parent_id, 0, sizeof(parent_id));
9860         parent_id.pci.domain = pci_domain_nr(pdev->bus);
9861         parent_id.pci.bus = pdev->bus->number;
9862         parent_id.pci.device = PCI_SLOT(pdev->devfn);
9863
9864         np->parent = niu_get_parent(np, &parent_id,
9865                                     PLAT_TYPE_ATLAS);
9866         if (!np->parent) {
9867                 err = -ENOMEM;
9868                 goto err_out_free_dev;
9869         }
9870
9871         pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9872         val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9873         val16 |= (PCI_EXP_DEVCTL_CERE |
9874                   PCI_EXP_DEVCTL_NFERE |
9875                   PCI_EXP_DEVCTL_FERE |
9876                   PCI_EXP_DEVCTL_URRE |
9877                   PCI_EXP_DEVCTL_RELAX_EN);
9878         pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9879
9880         dma_mask = DMA_44BIT_MASK;
9881         err = pci_set_dma_mask(pdev, dma_mask);
9882         if (!err) {
9883                 dev->features |= NETIF_F_HIGHDMA;
9884                 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9885                 if (err) {
9886                         dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
9887                                 "DMA for consistent allocations, "
9888                                 "aborting.\n");
9889                         goto err_out_release_parent;
9890                 }
9891         }
9892         if (err || dma_mask == DMA_BIT_MASK(32)) {
9893                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9894                 if (err) {
9895                         dev_err(&pdev->dev, PFX "No usable DMA configuration, "
9896                                 "aborting.\n");
9897                         goto err_out_release_parent;
9898                 }
9899         }
9900
9901         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
9902
9903         np->regs = pci_ioremap_bar(pdev, 0);
9904         if (!np->regs) {
9905                 dev_err(&pdev->dev, PFX "Cannot map device registers, "
9906                         "aborting.\n");
9907                 err = -ENOMEM;
9908                 goto err_out_release_parent;
9909         }
9910
9911         pci_set_master(pdev);
9912         pci_save_state(pdev);
9913
9914         dev->irq = pdev->irq;
9915
9916         niu_assign_netdev_ops(dev);
9917
9918         err = niu_get_invariants(np);
9919         if (err) {
9920                 if (err != -ENODEV)
9921                         dev_err(&pdev->dev, PFX "Problem fetching invariants "
9922                                 "of chip, aborting.\n");
9923                 goto err_out_iounmap;
9924         }
9925
9926         err = register_netdev(dev);
9927         if (err) {
9928                 dev_err(&pdev->dev, PFX "Cannot register net device, "
9929                         "aborting.\n");
9930                 goto err_out_iounmap;
9931         }
9932
9933         pci_set_drvdata(pdev, dev);
9934
9935         niu_device_announce(np);
9936
9937         return 0;
9938
9939 err_out_iounmap:
9940         if (np->regs) {
9941                 iounmap(np->regs);
9942                 np->regs = NULL;
9943         }
9944
9945 err_out_release_parent:
9946         niu_put_parent(np);
9947
9948 err_out_free_dev:
9949         free_netdev(dev);
9950
9951 err_out_free_res:
9952         pci_release_regions(pdev);
9953
9954 err_out_disable_pdev:
9955         pci_disable_device(pdev);
9956         pci_set_drvdata(pdev, NULL);
9957
9958         return err;
9959 }
9960
9961 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9962 {
9963         struct net_device *dev = pci_get_drvdata(pdev);
9964
9965         if (dev) {
9966                 struct niu *np = netdev_priv(dev);
9967
9968                 unregister_netdev(dev);
9969                 if (np->regs) {
9970                         iounmap(np->regs);
9971                         np->regs = NULL;
9972                 }
9973
9974                 niu_ldg_free(np);
9975
9976                 niu_put_parent(np);
9977
9978                 free_netdev(dev);
9979                 pci_release_regions(pdev);
9980                 pci_disable_device(pdev);
9981                 pci_set_drvdata(pdev, NULL);
9982         }
9983 }
9984
9985 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9986 {
9987         struct net_device *dev = pci_get_drvdata(pdev);
9988         struct niu *np = netdev_priv(dev);
9989         unsigned long flags;
9990
9991         if (!netif_running(dev))
9992                 return 0;
9993
9994         flush_scheduled_work();
9995         niu_netif_stop(np);
9996
9997         del_timer_sync(&np->timer);
9998
9999         spin_lock_irqsave(&np->lock, flags);
10000         niu_enable_interrupts(np, 0);
10001         spin_unlock_irqrestore(&np->lock, flags);
10002
10003         netif_device_detach(dev);
10004
10005         spin_lock_irqsave(&np->lock, flags);
10006         niu_stop_hw(np);
10007         spin_unlock_irqrestore(&np->lock, flags);
10008
10009         pci_save_state(pdev);
10010
10011         return 0;
10012 }
10013
10014 static int niu_resume(struct pci_dev *pdev)
10015 {
10016         struct net_device *dev = pci_get_drvdata(pdev);
10017         struct niu *np = netdev_priv(dev);
10018         unsigned long flags;
10019         int err;
10020
10021         if (!netif_running(dev))
10022                 return 0;
10023
10024         pci_restore_state(pdev);
10025
10026         netif_device_attach(dev);
10027
10028         spin_lock_irqsave(&np->lock, flags);
10029
10030         err = niu_init_hw(np);
10031         if (!err) {
10032                 np->timer.expires = jiffies + HZ;
10033                 add_timer(&np->timer);
10034                 niu_netif_start(np);
10035         }
10036
10037         spin_unlock_irqrestore(&np->lock, flags);
10038
10039         return err;
10040 }
10041
10042 static struct pci_driver niu_pci_driver = {
10043         .name           = DRV_MODULE_NAME,
10044         .id_table       = niu_pci_tbl,
10045         .probe          = niu_pci_init_one,
10046         .remove         = __devexit_p(niu_pci_remove_one),
10047         .suspend        = niu_suspend,
10048         .resume         = niu_resume,
10049 };
10050
10051 #ifdef CONFIG_SPARC64
10052 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
10053                                      u64 *dma_addr, gfp_t flag)
10054 {
10055         unsigned long order = get_order(size);
10056         unsigned long page = __get_free_pages(flag, order);
10057
10058         if (page == 0UL)
10059                 return NULL;
10060         memset((char *)page, 0, PAGE_SIZE << order);
10061         *dma_addr = __pa(page);
10062
10063         return (void *) page;
10064 }
10065
10066 static void niu_phys_free_coherent(struct device *dev, size_t size,
10067                                    void *cpu_addr, u64 handle)
10068 {
10069         unsigned long order = get_order(size);
10070
10071         free_pages((unsigned long) cpu_addr, order);
10072 }
10073
10074 static u64 niu_phys_map_page(struct device *dev, struct page *page,
10075                              unsigned long offset, size_t size,
10076                              enum dma_data_direction direction)
10077 {
10078         return page_to_phys(page) + offset;
10079 }
10080
10081 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10082                                 size_t size, enum dma_data_direction direction)
10083 {
10084         /* Nothing to do.  */
10085 }
10086
10087 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10088                                size_t size,
10089                                enum dma_data_direction direction)
10090 {
10091         return __pa(cpu_addr);
10092 }
10093
10094 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10095                                   size_t size,
10096                                   enum dma_data_direction direction)
10097 {
10098         /* Nothing to do.  */
10099 }
10100
10101 static const struct niu_ops niu_phys_ops = {
10102         .alloc_coherent = niu_phys_alloc_coherent,
10103         .free_coherent  = niu_phys_free_coherent,
10104         .map_page       = niu_phys_map_page,
10105         .unmap_page     = niu_phys_unmap_page,
10106         .map_single     = niu_phys_map_single,
10107         .unmap_single   = niu_phys_unmap_single,
10108 };
10109
10110 static unsigned long res_size(struct resource *r)
10111 {
10112         return r->end - r->start + 1UL;
10113 }
10114
10115 static int __devinit niu_of_probe(struct of_device *op,
10116                                   const struct of_device_id *match)
10117 {
10118         union niu_parent_id parent_id;
10119         struct net_device *dev;
10120         struct niu *np;
10121         const u32 *reg;
10122         int err;
10123
10124         niu_driver_version();
10125
10126         reg = of_get_property(op->node, "reg", NULL);
10127         if (!reg) {
10128                 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
10129                         op->node->full_name);
10130                 return -ENODEV;
10131         }
10132
10133         dev = niu_alloc_and_init(&op->dev, NULL, op,
10134                                  &niu_phys_ops, reg[0] & 0x1);
10135         if (!dev) {
10136                 err = -ENOMEM;
10137                 goto err_out;
10138         }
10139         np = netdev_priv(dev);
10140
10141         memset(&parent_id, 0, sizeof(parent_id));
10142         parent_id.of = of_get_parent(op->node);
10143
10144         np->parent = niu_get_parent(np, &parent_id,
10145                                     PLAT_TYPE_NIU);
10146         if (!np->parent) {
10147                 err = -ENOMEM;
10148                 goto err_out_free_dev;
10149         }
10150
10151         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
10152
10153         np->regs = of_ioremap(&op->resource[1], 0,
10154                               res_size(&op->resource[1]),
10155                               "niu regs");
10156         if (!np->regs) {
10157                 dev_err(&op->dev, PFX "Cannot map device registers, "
10158                         "aborting.\n");
10159                 err = -ENOMEM;
10160                 goto err_out_release_parent;
10161         }
10162
10163         np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10164                                     res_size(&op->resource[2]),
10165                                     "niu vregs-1");
10166         if (!np->vir_regs_1) {
10167                 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
10168                         "aborting.\n");
10169                 err = -ENOMEM;
10170                 goto err_out_iounmap;
10171         }
10172
10173         np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10174                                     res_size(&op->resource[3]),
10175                                     "niu vregs-2");
10176         if (!np->vir_regs_2) {
10177                 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
10178                         "aborting.\n");
10179                 err = -ENOMEM;
10180                 goto err_out_iounmap;
10181         }
10182
10183         niu_assign_netdev_ops(dev);
10184
10185         err = niu_get_invariants(np);
10186         if (err) {
10187                 if (err != -ENODEV)
10188                         dev_err(&op->dev, PFX "Problem fetching invariants "
10189                                 "of chip, aborting.\n");
10190                 goto err_out_iounmap;
10191         }
10192
10193         err = register_netdev(dev);
10194         if (err) {
10195                 dev_err(&op->dev, PFX "Cannot register net device, "
10196                         "aborting.\n");
10197                 goto err_out_iounmap;
10198         }
10199
10200         dev_set_drvdata(&op->dev, dev);
10201
10202         niu_device_announce(np);
10203
10204         return 0;
10205
10206 err_out_iounmap:
10207         if (np->vir_regs_1) {
10208                 of_iounmap(&op->resource[2], np->vir_regs_1,
10209                            res_size(&op->resource[2]));
10210                 np->vir_regs_1 = NULL;
10211         }
10212
10213         if (np->vir_regs_2) {
10214                 of_iounmap(&op->resource[3], np->vir_regs_2,
10215                            res_size(&op->resource[3]));
10216                 np->vir_regs_2 = NULL;
10217         }
10218
10219         if (np->regs) {
10220                 of_iounmap(&op->resource[1], np->regs,
10221                            res_size(&op->resource[1]));
10222                 np->regs = NULL;
10223         }
10224
10225 err_out_release_parent:
10226         niu_put_parent(np);
10227
10228 err_out_free_dev:
10229         free_netdev(dev);
10230
10231 err_out:
10232         return err;
10233 }
10234
10235 static int __devexit niu_of_remove(struct of_device *op)
10236 {
10237         struct net_device *dev = dev_get_drvdata(&op->dev);
10238
10239         if (dev) {
10240                 struct niu *np = netdev_priv(dev);
10241
10242                 unregister_netdev(dev);
10243
10244                 if (np->vir_regs_1) {
10245                         of_iounmap(&op->resource[2], np->vir_regs_1,
10246                                    res_size(&op->resource[2]));
10247                         np->vir_regs_1 = NULL;
10248                 }
10249
10250                 if (np->vir_regs_2) {
10251                         of_iounmap(&op->resource[3], np->vir_regs_2,
10252                                    res_size(&op->resource[3]));
10253                         np->vir_regs_2 = NULL;
10254                 }
10255
10256                 if (np->regs) {
10257                         of_iounmap(&op->resource[1], np->regs,
10258                                    res_size(&op->resource[1]));
10259                         np->regs = NULL;
10260                 }
10261
10262                 niu_ldg_free(np);
10263
10264                 niu_put_parent(np);
10265
10266                 free_netdev(dev);
10267                 dev_set_drvdata(&op->dev, NULL);
10268         }
10269         return 0;
10270 }
10271
10272 static const struct of_device_id niu_match[] = {
10273         {
10274                 .name = "network",
10275                 .compatible = "SUNW,niusl",
10276         },
10277         {},
10278 };
10279 MODULE_DEVICE_TABLE(of, niu_match);
10280
10281 static struct of_platform_driver niu_of_driver = {
10282         .name           = "niu",
10283         .match_table    = niu_match,
10284         .probe          = niu_of_probe,
10285         .remove         = __devexit_p(niu_of_remove),
10286 };
10287
10288 #endif /* CONFIG_SPARC64 */
10289
10290 static int __init niu_init(void)
10291 {
10292         int err = 0;
10293
10294         BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10295
10296         niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10297
10298 #ifdef CONFIG_SPARC64
10299         err = of_register_driver(&niu_of_driver, &of_bus_type);
10300 #endif
10301
10302         if (!err) {
10303                 err = pci_register_driver(&niu_pci_driver);
10304 #ifdef CONFIG_SPARC64
10305                 if (err)
10306                         of_unregister_driver(&niu_of_driver);
10307 #endif
10308         }
10309
10310         return err;
10311 }
10312
10313 static void __exit niu_exit(void)
10314 {
10315         pci_unregister_driver(&niu_pci_driver);
10316 #ifdef CONFIG_SPARC64
10317         of_unregister_driver(&niu_of_driver);
10318 #endif
10319 }
10320
10321 module_init(niu_init);
10322 module_exit(niu_exit);