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_1g_rgmii(struct niu *np, int *link_up_p)
1119 {
1120         struct niu_link_config *lp = &np->link_config;
1121         u16 current_speed, bmsr;
1122         unsigned long flags;
1123         u8 current_duplex;
1124         int err, link_up;
1125
1126         link_up = 0;
1127         current_speed = SPEED_INVALID;
1128         current_duplex = DUPLEX_INVALID;
1129
1130         spin_lock_irqsave(&np->lock, flags);
1131
1132         err = -EINVAL;
1133
1134         err = mii_read(np, np->phy_addr, MII_BMSR);
1135         if (err < 0)
1136                 goto out;
1137
1138         bmsr = err;
1139         if (bmsr & BMSR_LSTATUS) {
1140                 u16 adv, lpa, common, estat;
1141
1142                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1143                 if (err < 0)
1144                         goto out;
1145                 adv = err;
1146
1147                 err = mii_read(np, np->phy_addr, MII_LPA);
1148                 if (err < 0)
1149                         goto out;
1150                 lpa = err;
1151
1152                 common = adv & lpa;
1153
1154                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1155                 if (err < 0)
1156                         goto out;
1157                 estat = err;
1158                 link_up = 1;
1159                 current_speed = SPEED_1000;
1160                 current_duplex = DUPLEX_FULL;
1161
1162         }
1163         lp->active_speed = current_speed;
1164         lp->active_duplex = current_duplex;
1165         err = 0;
1166
1167 out:
1168         spin_unlock_irqrestore(&np->lock, flags);
1169
1170         *link_up_p = link_up;
1171         return err;
1172 }
1173
1174 static int bcm8704_reset(struct niu *np)
1175 {
1176         int err, limit;
1177
1178         err = mdio_read(np, np->phy_addr,
1179                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1180         if (err < 0)
1181                 return err;
1182         err |= BMCR_RESET;
1183         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1184                          MII_BMCR, err);
1185         if (err)
1186                 return err;
1187
1188         limit = 1000;
1189         while (--limit >= 0) {
1190                 err = mdio_read(np, np->phy_addr,
1191                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1192                 if (err < 0)
1193                         return err;
1194                 if (!(err & BMCR_RESET))
1195                         break;
1196         }
1197         if (limit < 0) {
1198                 dev_err(np->device, PFX "Port %u PHY will not reset "
1199                         "(bmcr=%04x)\n", np->port, (err & 0xffff));
1200                 return -ENODEV;
1201         }
1202         return 0;
1203 }
1204
1205 /* When written, certain PHY registers need to be read back twice
1206  * in order for the bits to settle properly.
1207  */
1208 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1209 {
1210         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1211         if (err < 0)
1212                 return err;
1213         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1214         if (err < 0)
1215                 return err;
1216         return 0;
1217 }
1218
1219 static int bcm8706_init_user_dev3(struct niu *np)
1220 {
1221         int err;
1222
1223
1224         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1225                         BCM8704_USER_OPT_DIGITAL_CTRL);
1226         if (err < 0)
1227                 return err;
1228         err &= ~USER_ODIG_CTRL_GPIOS;
1229         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1230         err |=  USER_ODIG_CTRL_RESV2;
1231         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1232                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1233         if (err)
1234                 return err;
1235
1236         mdelay(1000);
1237
1238         return 0;
1239 }
1240
1241 static int bcm8704_init_user_dev3(struct niu *np)
1242 {
1243         int err;
1244
1245         err = mdio_write(np, np->phy_addr,
1246                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1247                          (USER_CONTROL_OPTXRST_LVL |
1248                           USER_CONTROL_OPBIASFLT_LVL |
1249                           USER_CONTROL_OBTMPFLT_LVL |
1250                           USER_CONTROL_OPPRFLT_LVL |
1251                           USER_CONTROL_OPTXFLT_LVL |
1252                           USER_CONTROL_OPRXLOS_LVL |
1253                           USER_CONTROL_OPRXFLT_LVL |
1254                           USER_CONTROL_OPTXON_LVL |
1255                           (0x3f << USER_CONTROL_RES1_SHIFT)));
1256         if (err)
1257                 return err;
1258
1259         err = mdio_write(np, np->phy_addr,
1260                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1261                          (USER_PMD_TX_CTL_XFP_CLKEN |
1262                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1263                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1264                           USER_PMD_TX_CTL_TSCK_LPWREN));
1265         if (err)
1266                 return err;
1267
1268         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1269         if (err)
1270                 return err;
1271         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1272         if (err)
1273                 return err;
1274
1275         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1276                         BCM8704_USER_OPT_DIGITAL_CTRL);
1277         if (err < 0)
1278                 return err;
1279         err &= ~USER_ODIG_CTRL_GPIOS;
1280         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1281         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1282                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1283         if (err)
1284                 return err;
1285
1286         mdelay(1000);
1287
1288         return 0;
1289 }
1290
1291 static int mrvl88x2011_act_led(struct niu *np, int val)
1292 {
1293         int     err;
1294
1295         err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1296                 MRVL88X2011_LED_8_TO_11_CTL);
1297         if (err < 0)
1298                 return err;
1299
1300         err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1301         err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1302
1303         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1304                           MRVL88X2011_LED_8_TO_11_CTL, err);
1305 }
1306
1307 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1308 {
1309         int     err;
1310
1311         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1312                         MRVL88X2011_LED_BLINK_CTL);
1313         if (err >= 0) {
1314                 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1315                 err |= (rate << 4);
1316
1317                 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1318                                  MRVL88X2011_LED_BLINK_CTL, err);
1319         }
1320
1321         return err;
1322 }
1323
1324 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1325 {
1326         int     err;
1327
1328         /* Set LED functions */
1329         err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1330         if (err)
1331                 return err;
1332
1333         /* led activity */
1334         err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1335         if (err)
1336                 return err;
1337
1338         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1339                         MRVL88X2011_GENERAL_CTL);
1340         if (err < 0)
1341                 return err;
1342
1343         err |= MRVL88X2011_ENA_XFPREFCLK;
1344
1345         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1346                          MRVL88X2011_GENERAL_CTL, err);
1347         if (err < 0)
1348                 return err;
1349
1350         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1351                         MRVL88X2011_PMA_PMD_CTL_1);
1352         if (err < 0)
1353                 return err;
1354
1355         if (np->link_config.loopback_mode == LOOPBACK_MAC)
1356                 err |= MRVL88X2011_LOOPBACK;
1357         else
1358                 err &= ~MRVL88X2011_LOOPBACK;
1359
1360         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1361                          MRVL88X2011_PMA_PMD_CTL_1, err);
1362         if (err < 0)
1363                 return err;
1364
1365         /* Enable PMD  */
1366         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1367                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1368 }
1369
1370
1371 static int xcvr_diag_bcm870x(struct niu *np)
1372 {
1373         u16 analog_stat0, tx_alarm_status;
1374         int err = 0;
1375
1376 #if 1
1377         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1378                         MII_STAT1000);
1379         if (err < 0)
1380                 return err;
1381         pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
1382                 np->port, err);
1383
1384         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1385         if (err < 0)
1386                 return err;
1387         pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
1388                 np->port, err);
1389
1390         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1391                         MII_NWAYTEST);
1392         if (err < 0)
1393                 return err;
1394         pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
1395                 np->port, err);
1396 #endif
1397
1398         /* XXX dig this out it might not be so useful XXX */
1399         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1400                         BCM8704_USER_ANALOG_STATUS0);
1401         if (err < 0)
1402                 return err;
1403         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1404                         BCM8704_USER_ANALOG_STATUS0);
1405         if (err < 0)
1406                 return err;
1407         analog_stat0 = err;
1408
1409         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1410                         BCM8704_USER_TX_ALARM_STATUS);
1411         if (err < 0)
1412                 return err;
1413         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1414                         BCM8704_USER_TX_ALARM_STATUS);
1415         if (err < 0)
1416                 return err;
1417         tx_alarm_status = err;
1418
1419         if (analog_stat0 != 0x03fc) {
1420                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1421                         pr_info(PFX "Port %u cable not connected "
1422                                 "or bad cable.\n", np->port);
1423                 } else if (analog_stat0 == 0x639c) {
1424                         pr_info(PFX "Port %u optical module is bad "
1425                                 "or missing.\n", np->port);
1426                 }
1427         }
1428
1429         return 0;
1430 }
1431
1432 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1433 {
1434         struct niu_link_config *lp = &np->link_config;
1435         int err;
1436
1437         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1438                         MII_BMCR);
1439         if (err < 0)
1440                 return err;
1441
1442         err &= ~BMCR_LOOPBACK;
1443
1444         if (lp->loopback_mode == LOOPBACK_MAC)
1445                 err |= BMCR_LOOPBACK;
1446
1447         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1448                          MII_BMCR, err);
1449         if (err)
1450                 return err;
1451
1452         return 0;
1453 }
1454
1455 static int xcvr_init_10g_bcm8706(struct niu *np)
1456 {
1457         int err = 0;
1458         u64 val;
1459
1460         if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1461             (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1462                         return err;
1463
1464         val = nr64_mac(XMAC_CONFIG);
1465         val &= ~XMAC_CONFIG_LED_POLARITY;
1466         val |= XMAC_CONFIG_FORCE_LED_ON;
1467         nw64_mac(XMAC_CONFIG, val);
1468
1469         val = nr64(MIF_CONFIG);
1470         val |= MIF_CONFIG_INDIRECT_MODE;
1471         nw64(MIF_CONFIG, val);
1472
1473         err = bcm8704_reset(np);
1474         if (err)
1475                 return err;
1476
1477         err = xcvr_10g_set_lb_bcm870x(np);
1478         if (err)
1479                 return err;
1480
1481         err = bcm8706_init_user_dev3(np);
1482         if (err)
1483                 return err;
1484
1485         err = xcvr_diag_bcm870x(np);
1486         if (err)
1487                 return err;
1488
1489         return 0;
1490 }
1491
1492 static int xcvr_init_10g_bcm8704(struct niu *np)
1493 {
1494         int err;
1495
1496         err = bcm8704_reset(np);
1497         if (err)
1498                 return err;
1499
1500         err = bcm8704_init_user_dev3(np);
1501         if (err)
1502                 return err;
1503
1504         err = xcvr_10g_set_lb_bcm870x(np);
1505         if (err)
1506                 return err;
1507
1508         err =  xcvr_diag_bcm870x(np);
1509         if (err)
1510                 return err;
1511
1512         return 0;
1513 }
1514
1515 static int xcvr_init_10g(struct niu *np)
1516 {
1517         int phy_id, err;
1518         u64 val;
1519
1520         val = nr64_mac(XMAC_CONFIG);
1521         val &= ~XMAC_CONFIG_LED_POLARITY;
1522         val |= XMAC_CONFIG_FORCE_LED_ON;
1523         nw64_mac(XMAC_CONFIG, val);
1524
1525         /* XXX shared resource, lock parent XXX */
1526         val = nr64(MIF_CONFIG);
1527         val |= MIF_CONFIG_INDIRECT_MODE;
1528         nw64(MIF_CONFIG, val);
1529
1530         phy_id = phy_decode(np->parent->port_phy, np->port);
1531         phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1532
1533         /* handle different phy types */
1534         switch (phy_id & NIU_PHY_ID_MASK) {
1535         case NIU_PHY_ID_MRVL88X2011:
1536                 err = xcvr_init_10g_mrvl88x2011(np);
1537                 break;
1538
1539         default: /* bcom 8704 */
1540                 err = xcvr_init_10g_bcm8704(np);
1541                 break;
1542         }
1543
1544         return 0;
1545 }
1546
1547 static int mii_reset(struct niu *np)
1548 {
1549         int limit, err;
1550
1551         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1552         if (err)
1553                 return err;
1554
1555         limit = 1000;
1556         while (--limit >= 0) {
1557                 udelay(500);
1558                 err = mii_read(np, np->phy_addr, MII_BMCR);
1559                 if (err < 0)
1560                         return err;
1561                 if (!(err & BMCR_RESET))
1562                         break;
1563         }
1564         if (limit < 0) {
1565                 dev_err(np->device, PFX "Port %u MII would not reset, "
1566                         "bmcr[%04x]\n", np->port, err);
1567                 return -ENODEV;
1568         }
1569
1570         return 0;
1571 }
1572
1573 static int xcvr_init_1g_rgmii(struct niu *np)
1574 {
1575         int err;
1576         u64 val;
1577         u16 bmcr, bmsr, estat;
1578
1579         val = nr64(MIF_CONFIG);
1580         val &= ~MIF_CONFIG_INDIRECT_MODE;
1581         nw64(MIF_CONFIG, val);
1582
1583         err = mii_reset(np);
1584         if (err)
1585                 return err;
1586
1587         err = mii_read(np, np->phy_addr, MII_BMSR);
1588         if (err < 0)
1589                 return err;
1590         bmsr = err;
1591
1592         estat = 0;
1593         if (bmsr & BMSR_ESTATEN) {
1594                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1595                 if (err < 0)
1596                         return err;
1597                 estat = err;
1598         }
1599
1600         bmcr = 0;
1601         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1602         if (err)
1603                 return err;
1604
1605         if (bmsr & BMSR_ESTATEN) {
1606                 u16 ctrl1000 = 0;
1607
1608                 if (estat & ESTATUS_1000_TFULL)
1609                         ctrl1000 |= ADVERTISE_1000FULL;
1610                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1611                 if (err)
1612                         return err;
1613         }
1614
1615         bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1616
1617         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1618         if (err)
1619                 return err;
1620
1621         err = mii_read(np, np->phy_addr, MII_BMCR);
1622         if (err < 0)
1623                 return err;
1624         bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1625
1626         err = mii_read(np, np->phy_addr, MII_BMSR);
1627         if (err < 0)
1628                 return err;
1629
1630         return 0;
1631 }
1632
1633 static int mii_init_common(struct niu *np)
1634 {
1635         struct niu_link_config *lp = &np->link_config;
1636         u16 bmcr, bmsr, adv, estat;
1637         int err;
1638
1639         err = mii_reset(np);
1640         if (err)
1641                 return err;
1642
1643         err = mii_read(np, np->phy_addr, MII_BMSR);
1644         if (err < 0)
1645                 return err;
1646         bmsr = err;
1647
1648         estat = 0;
1649         if (bmsr & BMSR_ESTATEN) {
1650                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1651                 if (err < 0)
1652                         return err;
1653                 estat = err;
1654         }
1655
1656         bmcr = 0;
1657         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1658         if (err)
1659                 return err;
1660
1661         if (lp->loopback_mode == LOOPBACK_MAC) {
1662                 bmcr |= BMCR_LOOPBACK;
1663                 if (lp->active_speed == SPEED_1000)
1664                         bmcr |= BMCR_SPEED1000;
1665                 if (lp->active_duplex == DUPLEX_FULL)
1666                         bmcr |= BMCR_FULLDPLX;
1667         }
1668
1669         if (lp->loopback_mode == LOOPBACK_PHY) {
1670                 u16 aux;
1671
1672                 aux = (BCM5464R_AUX_CTL_EXT_LB |
1673                        BCM5464R_AUX_CTL_WRITE_1);
1674                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1675                 if (err)
1676                         return err;
1677         }
1678
1679         /* XXX configurable XXX */
1680         /* XXX for now don't advertise half-duplex or asym pause... XXX */
1681         adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1682         if (bmsr & BMSR_10FULL)
1683                 adv |= ADVERTISE_10FULL;
1684         if (bmsr & BMSR_100FULL)
1685                 adv |= ADVERTISE_100FULL;
1686         err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1687         if (err)
1688                 return err;
1689
1690         if (bmsr & BMSR_ESTATEN) {
1691                 u16 ctrl1000 = 0;
1692
1693                 if (estat & ESTATUS_1000_TFULL)
1694                         ctrl1000 |= ADVERTISE_1000FULL;
1695                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1696                 if (err)
1697                         return err;
1698         }
1699         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1700
1701         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1702         if (err)
1703                 return err;
1704
1705         err = mii_read(np, np->phy_addr, MII_BMCR);
1706         if (err < 0)
1707                 return err;
1708         err = mii_read(np, np->phy_addr, MII_BMSR);
1709         if (err < 0)
1710                 return err;
1711 #if 0
1712         pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1713                 np->port, bmcr, bmsr);
1714 #endif
1715
1716         return 0;
1717 }
1718
1719 static int xcvr_init_1g(struct niu *np)
1720 {
1721         u64 val;
1722
1723         /* XXX shared resource, lock parent XXX */
1724         val = nr64(MIF_CONFIG);
1725         val &= ~MIF_CONFIG_INDIRECT_MODE;
1726         nw64(MIF_CONFIG, val);
1727
1728         return mii_init_common(np);
1729 }
1730
1731 static int niu_xcvr_init(struct niu *np)
1732 {
1733         const struct niu_phy_ops *ops = np->phy_ops;
1734         int err;
1735
1736         err = 0;
1737         if (ops->xcvr_init)
1738                 err = ops->xcvr_init(np);
1739
1740         return err;
1741 }
1742
1743 static int niu_serdes_init(struct niu *np)
1744 {
1745         const struct niu_phy_ops *ops = np->phy_ops;
1746         int err;
1747
1748         err = 0;
1749         if (ops->serdes_init)
1750                 err = ops->serdes_init(np);
1751
1752         return err;
1753 }
1754
1755 static void niu_init_xif(struct niu *);
1756 static void niu_handle_led(struct niu *, int status);
1757
1758 static int niu_link_status_common(struct niu *np, int link_up)
1759 {
1760         struct niu_link_config *lp = &np->link_config;
1761         struct net_device *dev = np->dev;
1762         unsigned long flags;
1763
1764         if (!netif_carrier_ok(dev) && link_up) {
1765                 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1766                        dev->name,
1767                        (lp->active_speed == SPEED_10000 ?
1768                         "10Gb/sec" :
1769                         (lp->active_speed == SPEED_1000 ?
1770                          "1Gb/sec" :
1771                          (lp->active_speed == SPEED_100 ?
1772                           "100Mbit/sec" : "10Mbit/sec"))),
1773                        (lp->active_duplex == DUPLEX_FULL ?
1774                         "full" : "half"));
1775
1776                 spin_lock_irqsave(&np->lock, flags);
1777                 niu_init_xif(np);
1778                 niu_handle_led(np, 1);
1779                 spin_unlock_irqrestore(&np->lock, flags);
1780
1781                 netif_carrier_on(dev);
1782         } else if (netif_carrier_ok(dev) && !link_up) {
1783                 niuwarn(LINK, "%s: Link is down\n", dev->name);
1784                 spin_lock_irqsave(&np->lock, flags);
1785                 niu_handle_led(np, 0);
1786                 spin_unlock_irqrestore(&np->lock, flags);
1787                 netif_carrier_off(dev);
1788         }
1789
1790         return 0;
1791 }
1792
1793 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1794 {
1795         int err, link_up, pma_status, pcs_status;
1796
1797         link_up = 0;
1798
1799         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1800                         MRVL88X2011_10G_PMD_STATUS_2);
1801         if (err < 0)
1802                 goto out;
1803
1804         /* Check PMA/PMD Register: 1.0001.2 == 1 */
1805         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1806                         MRVL88X2011_PMA_PMD_STATUS_1);
1807         if (err < 0)
1808                 goto out;
1809
1810         pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1811
1812         /* Check PMC Register : 3.0001.2 == 1: read twice */
1813         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1814                         MRVL88X2011_PMA_PMD_STATUS_1);
1815         if (err < 0)
1816                 goto out;
1817
1818         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1819                         MRVL88X2011_PMA_PMD_STATUS_1);
1820         if (err < 0)
1821                 goto out;
1822
1823         pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1824
1825         /* Check XGXS Register : 4.0018.[0-3,12] */
1826         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1827                         MRVL88X2011_10G_XGXS_LANE_STAT);
1828         if (err < 0)
1829                 goto out;
1830
1831         if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1832                     PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1833                     PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1834                     0x800))
1835                 link_up = (pma_status && pcs_status) ? 1 : 0;
1836
1837         np->link_config.active_speed = SPEED_10000;
1838         np->link_config.active_duplex = DUPLEX_FULL;
1839         err = 0;
1840 out:
1841         mrvl88x2011_act_led(np, (link_up ?
1842                                  MRVL88X2011_LED_CTL_PCS_ACT :
1843                                  MRVL88X2011_LED_CTL_OFF));
1844
1845         *link_up_p = link_up;
1846         return err;
1847 }
1848
1849 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1850 {
1851         int err, link_up;
1852         link_up = 0;
1853
1854         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1855                         BCM8704_PMD_RCV_SIGDET);
1856         if (err < 0)
1857                 goto out;
1858         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1859                 err = 0;
1860                 goto out;
1861         }
1862
1863         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1864                         BCM8704_PCS_10G_R_STATUS);
1865         if (err < 0)
1866                 goto out;
1867
1868         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1869                 err = 0;
1870                 goto out;
1871         }
1872
1873         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1874                         BCM8704_PHYXS_XGXS_LANE_STAT);
1875         if (err < 0)
1876                 goto out;
1877         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1878                     PHYXS_XGXS_LANE_STAT_MAGIC |
1879                     PHYXS_XGXS_LANE_STAT_PATTEST |
1880                     PHYXS_XGXS_LANE_STAT_LANE3 |
1881                     PHYXS_XGXS_LANE_STAT_LANE2 |
1882                     PHYXS_XGXS_LANE_STAT_LANE1 |
1883                     PHYXS_XGXS_LANE_STAT_LANE0)) {
1884                 err = 0;
1885                 np->link_config.active_speed = SPEED_INVALID;
1886                 np->link_config.active_duplex = DUPLEX_INVALID;
1887                 goto out;
1888         }
1889
1890         link_up = 1;
1891         np->link_config.active_speed = SPEED_10000;
1892         np->link_config.active_duplex = DUPLEX_FULL;
1893         err = 0;
1894
1895 out:
1896         *link_up_p = link_up;
1897         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
1898                 err = 0;
1899         return err;
1900 }
1901
1902 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
1903 {
1904         int err, link_up;
1905
1906         link_up = 0;
1907
1908         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1909                         BCM8704_PMD_RCV_SIGDET);
1910         if (err < 0)
1911                 goto out;
1912         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1913                 err = 0;
1914                 goto out;
1915         }
1916
1917         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1918                         BCM8704_PCS_10G_R_STATUS);
1919         if (err < 0)
1920                 goto out;
1921         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1922                 err = 0;
1923                 goto out;
1924         }
1925
1926         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1927                         BCM8704_PHYXS_XGXS_LANE_STAT);
1928         if (err < 0)
1929                 goto out;
1930
1931         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1932                     PHYXS_XGXS_LANE_STAT_MAGIC |
1933                     PHYXS_XGXS_LANE_STAT_LANE3 |
1934                     PHYXS_XGXS_LANE_STAT_LANE2 |
1935                     PHYXS_XGXS_LANE_STAT_LANE1 |
1936                     PHYXS_XGXS_LANE_STAT_LANE0)) {
1937                 err = 0;
1938                 goto out;
1939         }
1940
1941         link_up = 1;
1942         np->link_config.active_speed = SPEED_10000;
1943         np->link_config.active_duplex = DUPLEX_FULL;
1944         err = 0;
1945
1946 out:
1947         *link_up_p = link_up;
1948         return err;
1949 }
1950
1951 static int link_status_10g(struct niu *np, int *link_up_p)
1952 {
1953         unsigned long flags;
1954         int err = -EINVAL;
1955
1956         spin_lock_irqsave(&np->lock, flags);
1957
1958         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
1959                 int phy_id;
1960
1961                 phy_id = phy_decode(np->parent->port_phy, np->port);
1962                 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1963
1964                 /* handle different phy types */
1965                 switch (phy_id & NIU_PHY_ID_MASK) {
1966                 case NIU_PHY_ID_MRVL88X2011:
1967                         err = link_status_10g_mrvl(np, link_up_p);
1968                         break;
1969
1970                 default: /* bcom 8704 */
1971                         err = link_status_10g_bcom(np, link_up_p);
1972                         break;
1973                 }
1974         }
1975
1976         spin_unlock_irqrestore(&np->lock, flags);
1977
1978         return err;
1979 }
1980
1981 static int niu_10g_phy_present(struct niu *np)
1982 {
1983         u64 sig, mask, val;
1984
1985         sig = nr64(ESR_INT_SIGNALS);
1986         switch (np->port) {
1987         case 0:
1988                 mask = ESR_INT_SIGNALS_P0_BITS;
1989                 val = (ESR_INT_SRDY0_P0 |
1990                        ESR_INT_DET0_P0 |
1991                        ESR_INT_XSRDY_P0 |
1992                        ESR_INT_XDP_P0_CH3 |
1993                        ESR_INT_XDP_P0_CH2 |
1994                        ESR_INT_XDP_P0_CH1 |
1995                        ESR_INT_XDP_P0_CH0);
1996                 break;
1997
1998         case 1:
1999                 mask = ESR_INT_SIGNALS_P1_BITS;
2000                 val = (ESR_INT_SRDY0_P1 |
2001                        ESR_INT_DET0_P1 |
2002                        ESR_INT_XSRDY_P1 |
2003                        ESR_INT_XDP_P1_CH3 |
2004                        ESR_INT_XDP_P1_CH2 |
2005                        ESR_INT_XDP_P1_CH1 |
2006                        ESR_INT_XDP_P1_CH0);
2007                 break;
2008
2009         default:
2010                 return 0;
2011         }
2012
2013         if ((sig & mask) != val)
2014                 return 0;
2015         return 1;
2016 }
2017
2018 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2019 {
2020         unsigned long flags;
2021         int err = 0;
2022         int phy_present;
2023         int phy_present_prev;
2024
2025         spin_lock_irqsave(&np->lock, flags);
2026
2027         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2028                 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2029                         1 : 0;
2030                 phy_present = niu_10g_phy_present(np);
2031                 if (phy_present != phy_present_prev) {
2032                         /* state change */
2033                         if (phy_present) {
2034                                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2035                                 if (np->phy_ops->xcvr_init)
2036                                         err = np->phy_ops->xcvr_init(np);
2037                                 if (err) {
2038                                         /* debounce */
2039                                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2040                                 }
2041                         } else {
2042                                 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2043                                 *link_up_p = 0;
2044                                 niuwarn(LINK, "%s: Hotplug PHY Removed\n",
2045                                         np->dev->name);
2046                         }
2047                 }
2048                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT)
2049                         err = link_status_10g_bcm8706(np, link_up_p);
2050         }
2051
2052         spin_unlock_irqrestore(&np->lock, flags);
2053
2054         return err;
2055 }
2056
2057 static int link_status_1g(struct niu *np, int *link_up_p)
2058 {
2059         struct niu_link_config *lp = &np->link_config;
2060         u16 current_speed, bmsr;
2061         unsigned long flags;
2062         u8 current_duplex;
2063         int err, link_up;
2064
2065         link_up = 0;
2066         current_speed = SPEED_INVALID;
2067         current_duplex = DUPLEX_INVALID;
2068
2069         spin_lock_irqsave(&np->lock, flags);
2070
2071         err = -EINVAL;
2072         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
2073                 goto out;
2074
2075         err = mii_read(np, np->phy_addr, MII_BMSR);
2076         if (err < 0)
2077                 goto out;
2078
2079         bmsr = err;
2080         if (bmsr & BMSR_LSTATUS) {
2081                 u16 adv, lpa, common, estat;
2082
2083                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
2084                 if (err < 0)
2085                         goto out;
2086                 adv = err;
2087
2088                 err = mii_read(np, np->phy_addr, MII_LPA);
2089                 if (err < 0)
2090                         goto out;
2091                 lpa = err;
2092
2093                 common = adv & lpa;
2094
2095                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
2096                 if (err < 0)
2097                         goto out;
2098                 estat = err;
2099
2100                 link_up = 1;
2101                 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
2102                         current_speed = SPEED_1000;
2103                         if (estat & ESTATUS_1000_TFULL)
2104                                 current_duplex = DUPLEX_FULL;
2105                         else
2106                                 current_duplex = DUPLEX_HALF;
2107                 } else {
2108                         if (common & ADVERTISE_100BASE4) {
2109                                 current_speed = SPEED_100;
2110                                 current_duplex = DUPLEX_HALF;
2111                         } else if (common & ADVERTISE_100FULL) {
2112                                 current_speed = SPEED_100;
2113                                 current_duplex = DUPLEX_FULL;
2114                         } else if (common & ADVERTISE_100HALF) {
2115                                 current_speed = SPEED_100;
2116                                 current_duplex = DUPLEX_HALF;
2117                         } else if (common & ADVERTISE_10FULL) {
2118                                 current_speed = SPEED_10;
2119                                 current_duplex = DUPLEX_FULL;
2120                         } else if (common & ADVERTISE_10HALF) {
2121                                 current_speed = SPEED_10;
2122                                 current_duplex = DUPLEX_HALF;
2123                         } else
2124                                 link_up = 0;
2125                 }
2126         }
2127         lp->active_speed = current_speed;
2128         lp->active_duplex = current_duplex;
2129         err = 0;
2130
2131 out:
2132         spin_unlock_irqrestore(&np->lock, flags);
2133
2134         *link_up_p = link_up;
2135         return err;
2136 }
2137
2138 static int niu_link_status(struct niu *np, int *link_up_p)
2139 {
2140         const struct niu_phy_ops *ops = np->phy_ops;
2141         int err;
2142
2143         err = 0;
2144         if (ops->link_status)
2145                 err = ops->link_status(np, link_up_p);
2146
2147         return err;
2148 }
2149
2150 static void niu_timer(unsigned long __opaque)
2151 {
2152         struct niu *np = (struct niu *) __opaque;
2153         unsigned long off;
2154         int err, link_up;
2155
2156         err = niu_link_status(np, &link_up);
2157         if (!err)
2158                 niu_link_status_common(np, link_up);
2159
2160         if (netif_carrier_ok(np->dev))
2161                 off = 5 * HZ;
2162         else
2163                 off = 1 * HZ;
2164         np->timer.expires = jiffies + off;
2165
2166         add_timer(&np->timer);
2167 }
2168
2169 static const struct niu_phy_ops phy_ops_10g_serdes = {
2170         .serdes_init            = serdes_init_10g_serdes,
2171         .link_status            = link_status_10g_serdes,
2172 };
2173
2174 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2175         .serdes_init            = serdes_init_niu_10g_serdes,
2176         .link_status            = link_status_10g_serdes,
2177 };
2178
2179 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2180         .serdes_init            = serdes_init_niu_1g_serdes,
2181         .link_status            = link_status_1g_serdes,
2182 };
2183
2184 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2185         .xcvr_init              = xcvr_init_1g_rgmii,
2186         .link_status            = link_status_1g_rgmii,
2187 };
2188
2189 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2190         .serdes_init            = serdes_init_niu_10g_fiber,
2191         .xcvr_init              = xcvr_init_10g,
2192         .link_status            = link_status_10g,
2193 };
2194
2195 static const struct niu_phy_ops phy_ops_10g_fiber = {
2196         .serdes_init            = serdes_init_10g,
2197         .xcvr_init              = xcvr_init_10g,
2198         .link_status            = link_status_10g,
2199 };
2200
2201 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2202         .serdes_init            = serdes_init_10g,
2203         .xcvr_init              = xcvr_init_10g_bcm8706,
2204         .link_status            = link_status_10g_hotplug,
2205 };
2206
2207 static const struct niu_phy_ops phy_ops_10g_copper = {
2208         .serdes_init            = serdes_init_10g,
2209         .link_status            = link_status_10g, /* XXX */
2210 };
2211
2212 static const struct niu_phy_ops phy_ops_1g_fiber = {
2213         .serdes_init            = serdes_init_1g,
2214         .xcvr_init              = xcvr_init_1g,
2215         .link_status            = link_status_1g,
2216 };
2217
2218 static const struct niu_phy_ops phy_ops_1g_copper = {
2219         .xcvr_init              = xcvr_init_1g,
2220         .link_status            = link_status_1g,
2221 };
2222
2223 struct niu_phy_template {
2224         const struct niu_phy_ops        *ops;
2225         u32                             phy_addr_base;
2226 };
2227
2228 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2229         .ops            = &phy_ops_10g_fiber_niu,
2230         .phy_addr_base  = 16,
2231 };
2232
2233 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2234         .ops            = &phy_ops_10g_serdes_niu,
2235         .phy_addr_base  = 0,
2236 };
2237
2238 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2239         .ops            = &phy_ops_1g_serdes_niu,
2240         .phy_addr_base  = 0,
2241 };
2242
2243 static const struct niu_phy_template phy_template_10g_fiber = {
2244         .ops            = &phy_ops_10g_fiber,
2245         .phy_addr_base  = 8,
2246 };
2247
2248 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2249         .ops            = &phy_ops_10g_fiber_hotplug,
2250         .phy_addr_base  = 8,
2251 };
2252
2253 static const struct niu_phy_template phy_template_10g_copper = {
2254         .ops            = &phy_ops_10g_copper,
2255         .phy_addr_base  = 10,
2256 };
2257
2258 static const struct niu_phy_template phy_template_1g_fiber = {
2259         .ops            = &phy_ops_1g_fiber,
2260         .phy_addr_base  = 0,
2261 };
2262
2263 static const struct niu_phy_template phy_template_1g_copper = {
2264         .ops            = &phy_ops_1g_copper,
2265         .phy_addr_base  = 0,
2266 };
2267
2268 static const struct niu_phy_template phy_template_1g_rgmii = {
2269         .ops            = &phy_ops_1g_rgmii,
2270         .phy_addr_base  = 0,
2271 };
2272
2273 static const struct niu_phy_template phy_template_10g_serdes = {
2274         .ops            = &phy_ops_10g_serdes,
2275         .phy_addr_base  = 0,
2276 };
2277
2278 static int niu_atca_port_num[4] = {
2279         0, 0,  11, 10
2280 };
2281
2282 static int serdes_init_10g_serdes(struct niu *np)
2283 {
2284         struct niu_link_config *lp = &np->link_config;
2285         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2286         u64 ctrl_val, test_cfg_val, sig, mask, val;
2287         int err;
2288         u64 reset_val;
2289
2290         switch (np->port) {
2291         case 0:
2292                 reset_val =  ENET_SERDES_RESET_0;
2293                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2294                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2295                 pll_cfg = ENET_SERDES_0_PLL_CFG;
2296                 break;
2297         case 1:
2298                 reset_val =  ENET_SERDES_RESET_1;
2299                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2300                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2301                 pll_cfg = ENET_SERDES_1_PLL_CFG;
2302                 break;
2303
2304         default:
2305                 return -EINVAL;
2306         }
2307         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2308                     ENET_SERDES_CTRL_SDET_1 |
2309                     ENET_SERDES_CTRL_SDET_2 |
2310                     ENET_SERDES_CTRL_SDET_3 |
2311                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2312                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2313                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2314                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2315                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2316                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2317                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2318                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2319         test_cfg_val = 0;
2320
2321         if (lp->loopback_mode == LOOPBACK_PHY) {
2322                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2323                                   ENET_SERDES_TEST_MD_0_SHIFT) |
2324                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2325                                   ENET_SERDES_TEST_MD_1_SHIFT) |
2326                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2327                                   ENET_SERDES_TEST_MD_2_SHIFT) |
2328                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2329                                   ENET_SERDES_TEST_MD_3_SHIFT));
2330         }
2331
2332         esr_reset(np);
2333         nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2334         nw64(ctrl_reg, ctrl_val);
2335         nw64(test_cfg_reg, test_cfg_val);
2336
2337         /* Initialize all 4 lanes of the SERDES.  */
2338         for (i = 0; i < 4; i++) {
2339                 u32 rxtx_ctrl, glue0;
2340
2341                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2342                 if (err)
2343                         return err;
2344                 err = esr_read_glue0(np, i, &glue0);
2345                 if (err)
2346                         return err;
2347
2348                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2349                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2350                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2351
2352                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2353                            ESR_GLUE_CTRL0_THCNT |
2354                            ESR_GLUE_CTRL0_BLTIME);
2355                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2356                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2357                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2358                           (BLTIME_300_CYCLES <<
2359                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
2360
2361                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2362                 if (err)
2363                         return err;
2364                 err = esr_write_glue0(np, i, glue0);
2365                 if (err)
2366                         return err;
2367         }
2368
2369
2370         sig = nr64(ESR_INT_SIGNALS);
2371         switch (np->port) {
2372         case 0:
2373                 mask = ESR_INT_SIGNALS_P0_BITS;
2374                 val = (ESR_INT_SRDY0_P0 |
2375                        ESR_INT_DET0_P0 |
2376                        ESR_INT_XSRDY_P0 |
2377                        ESR_INT_XDP_P0_CH3 |
2378                        ESR_INT_XDP_P0_CH2 |
2379                        ESR_INT_XDP_P0_CH1 |
2380                        ESR_INT_XDP_P0_CH0);
2381                 break;
2382
2383         case 1:
2384                 mask = ESR_INT_SIGNALS_P1_BITS;
2385                 val = (ESR_INT_SRDY0_P1 |
2386                        ESR_INT_DET0_P1 |
2387                        ESR_INT_XSRDY_P1 |
2388                        ESR_INT_XDP_P1_CH3 |
2389                        ESR_INT_XDP_P1_CH2 |
2390                        ESR_INT_XDP_P1_CH1 |
2391                        ESR_INT_XDP_P1_CH0);
2392                 break;
2393
2394         default:
2395                 return -EINVAL;
2396         }
2397
2398         if ((sig & mask) != val) {
2399                 int err;
2400                 err = serdes_init_1g_serdes(np);
2401                 if (!err) {
2402                         np->flags &= ~NIU_FLAGS_10G;
2403                         np->mac_xcvr = MAC_XCVR_PCS;
2404                 }  else {
2405                         dev_err(np->device, PFX "Port %u 10G/1G SERDES Link Failed \n",
2406                          np->port);
2407                         return -ENODEV;
2408                 }
2409         }
2410
2411         return 0;
2412 }
2413
2414 static int niu_determine_phy_disposition(struct niu *np)
2415 {
2416         struct niu_parent *parent = np->parent;
2417         u8 plat_type = parent->plat_type;
2418         const struct niu_phy_template *tp;
2419         u32 phy_addr_off = 0;
2420
2421         if (plat_type == PLAT_TYPE_NIU) {
2422                 switch (np->flags &
2423                         (NIU_FLAGS_10G |
2424                          NIU_FLAGS_FIBER |
2425                          NIU_FLAGS_XCVR_SERDES)) {
2426                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2427                         /* 10G Serdes */
2428                         tp = &phy_template_niu_10g_serdes;
2429                         break;
2430                 case NIU_FLAGS_XCVR_SERDES:
2431                         /* 1G Serdes */
2432                         tp = &phy_template_niu_1g_serdes;
2433                         break;
2434                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2435                         /* 10G Fiber */
2436                 default:
2437                         tp = &phy_template_niu_10g_fiber;
2438                         phy_addr_off += np->port;
2439                         break;
2440                 }
2441         } else {
2442                 switch (np->flags &
2443                         (NIU_FLAGS_10G |
2444                          NIU_FLAGS_FIBER |
2445                          NIU_FLAGS_XCVR_SERDES)) {
2446                 case 0:
2447                         /* 1G copper */
2448                         tp = &phy_template_1g_copper;
2449                         if (plat_type == PLAT_TYPE_VF_P0)
2450                                 phy_addr_off = 10;
2451                         else if (plat_type == PLAT_TYPE_VF_P1)
2452                                 phy_addr_off = 26;
2453
2454                         phy_addr_off += (np->port ^ 0x3);
2455                         break;
2456
2457                 case NIU_FLAGS_10G:
2458                         /* 10G copper */
2459                         tp = &phy_template_1g_copper;
2460                         break;
2461
2462                 case NIU_FLAGS_FIBER:
2463                         /* 1G fiber */
2464                         tp = &phy_template_1g_fiber;
2465                         break;
2466
2467                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2468                         /* 10G fiber */
2469                         tp = &phy_template_10g_fiber;
2470                         if (plat_type == PLAT_TYPE_VF_P0 ||
2471                             plat_type == PLAT_TYPE_VF_P1)
2472                                 phy_addr_off = 8;
2473                         phy_addr_off += np->port;
2474                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2475                                 tp = &phy_template_10g_fiber_hotplug;
2476                                 if (np->port == 0)
2477                                         phy_addr_off = 8;
2478                                 if (np->port == 1)
2479                                         phy_addr_off = 12;
2480                         }
2481                         break;
2482
2483                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2484                 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2485                 case NIU_FLAGS_XCVR_SERDES:
2486                         switch(np->port) {
2487                         case 0:
2488                         case 1:
2489                                 tp = &phy_template_10g_serdes;
2490                                 break;
2491                         case 2:
2492                         case 3:
2493                                 tp = &phy_template_1g_rgmii;
2494                                 break;
2495                         default:
2496                                 return -EINVAL;
2497                                 break;
2498                         }
2499                         phy_addr_off = niu_atca_port_num[np->port];
2500                         break;
2501
2502                 default:
2503                         return -EINVAL;
2504                 }
2505         }
2506
2507         np->phy_ops = tp->ops;
2508         np->phy_addr = tp->phy_addr_base + phy_addr_off;
2509
2510         return 0;
2511 }
2512
2513 static int niu_init_link(struct niu *np)
2514 {
2515         struct niu_parent *parent = np->parent;
2516         int err, ignore;
2517
2518         if (parent->plat_type == PLAT_TYPE_NIU) {
2519                 err = niu_xcvr_init(np);
2520                 if (err)
2521                         return err;
2522                 msleep(200);
2523         }
2524         err = niu_serdes_init(np);
2525         if (err)
2526                 return err;
2527         msleep(200);
2528         err = niu_xcvr_init(np);
2529         if (!err)
2530                 niu_link_status(np, &ignore);
2531         return 0;
2532 }
2533
2534 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2535 {
2536         u16 reg0 = addr[4] << 8 | addr[5];
2537         u16 reg1 = addr[2] << 8 | addr[3];
2538         u16 reg2 = addr[0] << 8 | addr[1];
2539
2540         if (np->flags & NIU_FLAGS_XMAC) {
2541                 nw64_mac(XMAC_ADDR0, reg0);
2542                 nw64_mac(XMAC_ADDR1, reg1);
2543                 nw64_mac(XMAC_ADDR2, reg2);
2544         } else {
2545                 nw64_mac(BMAC_ADDR0, reg0);
2546                 nw64_mac(BMAC_ADDR1, reg1);
2547                 nw64_mac(BMAC_ADDR2, reg2);
2548         }
2549 }
2550
2551 static int niu_num_alt_addr(struct niu *np)
2552 {
2553         if (np->flags & NIU_FLAGS_XMAC)
2554                 return XMAC_NUM_ALT_ADDR;
2555         else
2556                 return BMAC_NUM_ALT_ADDR;
2557 }
2558
2559 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2560 {
2561         u16 reg0 = addr[4] << 8 | addr[5];
2562         u16 reg1 = addr[2] << 8 | addr[3];
2563         u16 reg2 = addr[0] << 8 | addr[1];
2564
2565         if (index >= niu_num_alt_addr(np))
2566                 return -EINVAL;
2567
2568         if (np->flags & NIU_FLAGS_XMAC) {
2569                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2570                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2571                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2572         } else {
2573                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2574                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2575                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2576         }
2577
2578         return 0;
2579 }
2580
2581 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2582 {
2583         unsigned long reg;
2584         u64 val, mask;
2585
2586         if (index >= niu_num_alt_addr(np))
2587                 return -EINVAL;
2588
2589         if (np->flags & NIU_FLAGS_XMAC) {
2590                 reg = XMAC_ADDR_CMPEN;
2591                 mask = 1 << index;
2592         } else {
2593                 reg = BMAC_ADDR_CMPEN;
2594                 mask = 1 << (index + 1);
2595         }
2596
2597         val = nr64_mac(reg);
2598         if (on)
2599                 val |= mask;
2600         else
2601                 val &= ~mask;
2602         nw64_mac(reg, val);
2603
2604         return 0;
2605 }
2606
2607 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2608                                    int num, int mac_pref)
2609 {
2610         u64 val = nr64_mac(reg);
2611         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2612         val |= num;
2613         if (mac_pref)
2614                 val |= HOST_INFO_MPR;
2615         nw64_mac(reg, val);
2616 }
2617
2618 static int __set_rdc_table_num(struct niu *np,
2619                                int xmac_index, int bmac_index,
2620                                int rdc_table_num, int mac_pref)
2621 {
2622         unsigned long reg;
2623
2624         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2625                 return -EINVAL;
2626         if (np->flags & NIU_FLAGS_XMAC)
2627                 reg = XMAC_HOST_INFO(xmac_index);
2628         else
2629                 reg = BMAC_HOST_INFO(bmac_index);
2630         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2631         return 0;
2632 }
2633
2634 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2635                                          int mac_pref)
2636 {
2637         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2638 }
2639
2640 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2641                                            int mac_pref)
2642 {
2643         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2644 }
2645
2646 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2647                                      int table_num, int mac_pref)
2648 {
2649         if (idx >= niu_num_alt_addr(np))
2650                 return -EINVAL;
2651         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2652 }
2653
2654 static u64 vlan_entry_set_parity(u64 reg_val)
2655 {
2656         u64 port01_mask;
2657         u64 port23_mask;
2658
2659         port01_mask = 0x00ff;
2660         port23_mask = 0xff00;
2661
2662         if (hweight64(reg_val & port01_mask) & 1)
2663                 reg_val |= ENET_VLAN_TBL_PARITY0;
2664         else
2665                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2666
2667         if (hweight64(reg_val & port23_mask) & 1)
2668                 reg_val |= ENET_VLAN_TBL_PARITY1;
2669         else
2670                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2671
2672         return reg_val;
2673 }
2674
2675 static void vlan_tbl_write(struct niu *np, unsigned long index,
2676                            int port, int vpr, int rdc_table)
2677 {
2678         u64 reg_val = nr64(ENET_VLAN_TBL(index));
2679
2680         reg_val &= ~((ENET_VLAN_TBL_VPR |
2681                       ENET_VLAN_TBL_VLANRDCTBLN) <<
2682                      ENET_VLAN_TBL_SHIFT(port));
2683         if (vpr)
2684                 reg_val |= (ENET_VLAN_TBL_VPR <<
2685                             ENET_VLAN_TBL_SHIFT(port));
2686         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2687
2688         reg_val = vlan_entry_set_parity(reg_val);
2689
2690         nw64(ENET_VLAN_TBL(index), reg_val);
2691 }
2692
2693 static void vlan_tbl_clear(struct niu *np)
2694 {
2695         int i;
2696
2697         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2698                 nw64(ENET_VLAN_TBL(i), 0);
2699 }
2700
2701 static int tcam_wait_bit(struct niu *np, u64 bit)
2702 {
2703         int limit = 1000;
2704
2705         while (--limit > 0) {
2706                 if (nr64(TCAM_CTL) & bit)
2707                         break;
2708                 udelay(1);
2709         }
2710         if (limit < 0)
2711                 return -ENODEV;
2712
2713         return 0;
2714 }
2715
2716 static int tcam_flush(struct niu *np, int index)
2717 {
2718         nw64(TCAM_KEY_0, 0x00);
2719         nw64(TCAM_KEY_MASK_0, 0xff);
2720         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2721
2722         return tcam_wait_bit(np, TCAM_CTL_STAT);
2723 }
2724
2725 #if 0
2726 static int tcam_read(struct niu *np, int index,
2727                      u64 *key, u64 *mask)
2728 {
2729         int err;
2730
2731         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2732         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2733         if (!err) {
2734                 key[0] = nr64(TCAM_KEY_0);
2735                 key[1] = nr64(TCAM_KEY_1);
2736                 key[2] = nr64(TCAM_KEY_2);
2737                 key[3] = nr64(TCAM_KEY_3);
2738                 mask[0] = nr64(TCAM_KEY_MASK_0);
2739                 mask[1] = nr64(TCAM_KEY_MASK_1);
2740                 mask[2] = nr64(TCAM_KEY_MASK_2);
2741                 mask[3] = nr64(TCAM_KEY_MASK_3);
2742         }
2743         return err;
2744 }
2745 #endif
2746
2747 static int tcam_write(struct niu *np, int index,
2748                       u64 *key, u64 *mask)
2749 {
2750         nw64(TCAM_KEY_0, key[0]);
2751         nw64(TCAM_KEY_1, key[1]);
2752         nw64(TCAM_KEY_2, key[2]);
2753         nw64(TCAM_KEY_3, key[3]);
2754         nw64(TCAM_KEY_MASK_0, mask[0]);
2755         nw64(TCAM_KEY_MASK_1, mask[1]);
2756         nw64(TCAM_KEY_MASK_2, mask[2]);
2757         nw64(TCAM_KEY_MASK_3, mask[3]);
2758         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2759
2760         return tcam_wait_bit(np, TCAM_CTL_STAT);
2761 }
2762
2763 #if 0
2764 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2765 {
2766         int err;
2767
2768         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2769         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2770         if (!err)
2771                 *data = nr64(TCAM_KEY_1);
2772
2773         return err;
2774 }
2775 #endif
2776
2777 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2778 {
2779         nw64(TCAM_KEY_1, assoc_data);
2780         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2781
2782         return tcam_wait_bit(np, TCAM_CTL_STAT);
2783 }
2784
2785 static void tcam_enable(struct niu *np, int on)
2786 {
2787         u64 val = nr64(FFLP_CFG_1);
2788
2789         if (on)
2790                 val &= ~FFLP_CFG_1_TCAM_DIS;
2791         else
2792                 val |= FFLP_CFG_1_TCAM_DIS;
2793         nw64(FFLP_CFG_1, val);
2794 }
2795
2796 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2797 {
2798         u64 val = nr64(FFLP_CFG_1);
2799
2800         val &= ~(FFLP_CFG_1_FFLPINITDONE |
2801                  FFLP_CFG_1_CAMLAT |
2802                  FFLP_CFG_1_CAMRATIO);
2803         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2804         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2805         nw64(FFLP_CFG_1, val);
2806
2807         val = nr64(FFLP_CFG_1);
2808         val |= FFLP_CFG_1_FFLPINITDONE;
2809         nw64(FFLP_CFG_1, val);
2810 }
2811
2812 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2813                                       int on)
2814 {
2815         unsigned long reg;
2816         u64 val;
2817
2818         if (class < CLASS_CODE_ETHERTYPE1 ||
2819             class > CLASS_CODE_ETHERTYPE2)
2820                 return -EINVAL;
2821
2822         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2823         val = nr64(reg);
2824         if (on)
2825                 val |= L2_CLS_VLD;
2826         else
2827                 val &= ~L2_CLS_VLD;
2828         nw64(reg, val);
2829
2830         return 0;
2831 }
2832
2833 #if 0
2834 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2835                                    u64 ether_type)
2836 {
2837         unsigned long reg;
2838         u64 val;
2839
2840         if (class < CLASS_CODE_ETHERTYPE1 ||
2841             class > CLASS_CODE_ETHERTYPE2 ||
2842             (ether_type & ~(u64)0xffff) != 0)
2843                 return -EINVAL;
2844
2845         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2846         val = nr64(reg);
2847         val &= ~L2_CLS_ETYPE;
2848         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2849         nw64(reg, val);
2850
2851         return 0;
2852 }
2853 #endif
2854
2855 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2856                                      int on)
2857 {
2858         unsigned long reg;
2859         u64 val;
2860
2861         if (class < CLASS_CODE_USER_PROG1 ||
2862             class > CLASS_CODE_USER_PROG4)
2863                 return -EINVAL;
2864
2865         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2866         val = nr64(reg);
2867         if (on)
2868                 val |= L3_CLS_VALID;
2869         else
2870                 val &= ~L3_CLS_VALID;
2871         nw64(reg, val);
2872
2873         return 0;
2874 }
2875
2876 #if 0
2877 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2878                                   int ipv6, u64 protocol_id,
2879                                   u64 tos_mask, u64 tos_val)
2880 {
2881         unsigned long reg;
2882         u64 val;
2883
2884         if (class < CLASS_CODE_USER_PROG1 ||
2885             class > CLASS_CODE_USER_PROG4 ||
2886             (protocol_id & ~(u64)0xff) != 0 ||
2887             (tos_mask & ~(u64)0xff) != 0 ||
2888             (tos_val & ~(u64)0xff) != 0)
2889                 return -EINVAL;
2890
2891         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2892         val = nr64(reg);
2893         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2894                  L3_CLS_TOSMASK | L3_CLS_TOS);
2895         if (ipv6)
2896                 val |= L3_CLS_IPVER;
2897         val |= (protocol_id << L3_CLS_PID_SHIFT);
2898         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2899         val |= (tos_val << L3_CLS_TOS_SHIFT);
2900         nw64(reg, val);
2901
2902         return 0;
2903 }
2904 #endif
2905
2906 static int tcam_early_init(struct niu *np)
2907 {
2908         unsigned long i;
2909         int err;
2910
2911         tcam_enable(np, 0);
2912         tcam_set_lat_and_ratio(np,
2913                                DEFAULT_TCAM_LATENCY,
2914                                DEFAULT_TCAM_ACCESS_RATIO);
2915         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
2916                 err = tcam_user_eth_class_enable(np, i, 0);
2917                 if (err)
2918                         return err;
2919         }
2920         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
2921                 err = tcam_user_ip_class_enable(np, i, 0);
2922                 if (err)
2923                         return err;
2924         }
2925
2926         return 0;
2927 }
2928
2929 static int tcam_flush_all(struct niu *np)
2930 {
2931         unsigned long i;
2932
2933         for (i = 0; i < np->parent->tcam_num_entries; i++) {
2934                 int err = tcam_flush(np, i);
2935                 if (err)
2936                         return err;
2937         }
2938         return 0;
2939 }
2940
2941 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
2942 {
2943         return ((u64)index | (num_entries == 1 ?
2944                               HASH_TBL_ADDR_AUTOINC : 0));
2945 }
2946
2947 #if 0
2948 static int hash_read(struct niu *np, unsigned long partition,
2949                      unsigned long index, unsigned long num_entries,
2950                      u64 *data)
2951 {
2952         u64 val = hash_addr_regval(index, num_entries);
2953         unsigned long i;
2954
2955         if (partition >= FCRAM_NUM_PARTITIONS ||
2956             index + num_entries > FCRAM_SIZE)
2957                 return -EINVAL;
2958
2959         nw64(HASH_TBL_ADDR(partition), val);
2960         for (i = 0; i < num_entries; i++)
2961                 data[i] = nr64(HASH_TBL_DATA(partition));
2962
2963         return 0;
2964 }
2965 #endif
2966
2967 static int hash_write(struct niu *np, unsigned long partition,
2968                       unsigned long index, unsigned long num_entries,
2969                       u64 *data)
2970 {
2971         u64 val = hash_addr_regval(index, num_entries);
2972         unsigned long i;
2973
2974         if (partition >= FCRAM_NUM_PARTITIONS ||
2975             index + (num_entries * 8) > FCRAM_SIZE)
2976                 return -EINVAL;
2977
2978         nw64(HASH_TBL_ADDR(partition), val);
2979         for (i = 0; i < num_entries; i++)
2980                 nw64(HASH_TBL_DATA(partition), data[i]);
2981
2982         return 0;
2983 }
2984
2985 static void fflp_reset(struct niu *np)
2986 {
2987         u64 val;
2988
2989         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
2990         udelay(10);
2991         nw64(FFLP_CFG_1, 0);
2992
2993         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
2994         nw64(FFLP_CFG_1, val);
2995 }
2996
2997 static void fflp_set_timings(struct niu *np)
2998 {
2999         u64 val = nr64(FFLP_CFG_1);
3000
3001         val &= ~FFLP_CFG_1_FFLPINITDONE;
3002         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3003         nw64(FFLP_CFG_1, val);
3004
3005         val = nr64(FFLP_CFG_1);
3006         val |= FFLP_CFG_1_FFLPINITDONE;
3007         nw64(FFLP_CFG_1, val);
3008
3009         val = nr64(FCRAM_REF_TMR);
3010         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3011         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3012         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3013         nw64(FCRAM_REF_TMR, val);
3014 }
3015
3016 static int fflp_set_partition(struct niu *np, u64 partition,
3017                               u64 mask, u64 base, int enable)
3018 {
3019         unsigned long reg;
3020         u64 val;
3021
3022         if (partition >= FCRAM_NUM_PARTITIONS ||
3023             (mask & ~(u64)0x1f) != 0 ||
3024             (base & ~(u64)0x1f) != 0)
3025                 return -EINVAL;
3026
3027         reg = FLW_PRT_SEL(partition);
3028
3029         val = nr64(reg);
3030         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3031         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3032         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3033         if (enable)
3034                 val |= FLW_PRT_SEL_EXT;
3035         nw64(reg, val);
3036
3037         return 0;
3038 }
3039
3040 static int fflp_disable_all_partitions(struct niu *np)
3041 {
3042         unsigned long i;
3043
3044         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3045                 int err = fflp_set_partition(np, 0, 0, 0, 0);
3046                 if (err)
3047                         return err;
3048         }
3049         return 0;
3050 }
3051
3052 static void fflp_llcsnap_enable(struct niu *np, int on)
3053 {
3054         u64 val = nr64(FFLP_CFG_1);
3055
3056         if (on)
3057                 val |= FFLP_CFG_1_LLCSNAP;
3058         else
3059                 val &= ~FFLP_CFG_1_LLCSNAP;
3060         nw64(FFLP_CFG_1, val);
3061 }
3062
3063 static void fflp_errors_enable(struct niu *np, int on)
3064 {
3065         u64 val = nr64(FFLP_CFG_1);
3066
3067         if (on)
3068                 val &= ~FFLP_CFG_1_ERRORDIS;
3069         else
3070                 val |= FFLP_CFG_1_ERRORDIS;
3071         nw64(FFLP_CFG_1, val);
3072 }
3073
3074 static int fflp_hash_clear(struct niu *np)
3075 {
3076         struct fcram_hash_ipv4 ent;
3077         unsigned long i;
3078
3079         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
3080         memset(&ent, 0, sizeof(ent));
3081         ent.header = HASH_HEADER_EXT;
3082
3083         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3084                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3085                 if (err)
3086                         return err;
3087         }
3088         return 0;
3089 }
3090
3091 static int fflp_early_init(struct niu *np)
3092 {
3093         struct niu_parent *parent;
3094         unsigned long flags;
3095         int err;
3096
3097         niu_lock_parent(np, flags);
3098
3099         parent = np->parent;
3100         err = 0;
3101         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3102                 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
3103                        np->port);
3104                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3105                         fflp_reset(np);
3106                         fflp_set_timings(np);
3107                         err = fflp_disable_all_partitions(np);
3108                         if (err) {
3109                                 niudbg(PROBE, "fflp_disable_all_partitions "
3110                                        "failed, err=%d\n", err);
3111                                 goto out;
3112                         }
3113                 }
3114
3115                 err = tcam_early_init(np);
3116                 if (err) {
3117                         niudbg(PROBE, "tcam_early_init failed, err=%d\n",
3118                                err);
3119                         goto out;
3120                 }
3121                 fflp_llcsnap_enable(np, 1);
3122                 fflp_errors_enable(np, 0);
3123                 nw64(H1POLY, 0);
3124                 nw64(H2POLY, 0);
3125
3126                 err = tcam_flush_all(np);
3127                 if (err) {
3128                         niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
3129                                err);
3130                         goto out;
3131                 }
3132                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3133                         err = fflp_hash_clear(np);
3134                         if (err) {
3135                                 niudbg(PROBE, "fflp_hash_clear failed, "
3136                                        "err=%d\n", err);
3137                                 goto out;
3138                         }
3139                 }
3140
3141                 vlan_tbl_clear(np);
3142
3143                 niudbg(PROBE, "fflp_early_init: Success\n");
3144                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3145         }
3146 out:
3147         niu_unlock_parent(np, flags);
3148         return err;
3149 }
3150
3151 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3152 {
3153         if (class_code < CLASS_CODE_USER_PROG1 ||
3154             class_code > CLASS_CODE_SCTP_IPV6)
3155                 return -EINVAL;
3156
3157         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3158         return 0;
3159 }
3160
3161 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3162 {
3163         if (class_code < CLASS_CODE_USER_PROG1 ||
3164             class_code > CLASS_CODE_SCTP_IPV6)
3165                 return -EINVAL;
3166
3167         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3168         return 0;
3169 }
3170
3171 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3172                               u32 offset, u32 size)
3173 {
3174         int i = skb_shinfo(skb)->nr_frags;
3175         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3176
3177         frag->page = page;
3178         frag->page_offset = offset;
3179         frag->size = size;
3180
3181         skb->len += size;
3182         skb->data_len += size;
3183         skb->truesize += size;
3184
3185         skb_shinfo(skb)->nr_frags = i + 1;
3186 }
3187
3188 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3189 {
3190         a >>= PAGE_SHIFT;
3191         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3192
3193         return (a & (MAX_RBR_RING_SIZE - 1));
3194 }
3195
3196 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3197                                     struct page ***link)
3198 {
3199         unsigned int h = niu_hash_rxaddr(rp, addr);
3200         struct page *p, **pp;
3201
3202         addr &= PAGE_MASK;
3203         pp = &rp->rxhash[h];
3204         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3205                 if (p->index == addr) {
3206                         *link = pp;
3207                         break;
3208                 }
3209         }
3210
3211         return p;
3212 }
3213
3214 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3215 {
3216         unsigned int h = niu_hash_rxaddr(rp, base);
3217
3218         page->index = base;
3219         page->mapping = (struct address_space *) rp->rxhash[h];
3220         rp->rxhash[h] = page;
3221 }
3222
3223 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3224                             gfp_t mask, int start_index)
3225 {
3226         struct page *page;
3227         u64 addr;
3228         int i;
3229
3230         page = alloc_page(mask);
3231         if (!page)
3232                 return -ENOMEM;
3233
3234         addr = np->ops->map_page(np->device, page, 0,
3235                                  PAGE_SIZE, DMA_FROM_DEVICE);
3236
3237         niu_hash_page(rp, page, addr);
3238         if (rp->rbr_blocks_per_page > 1)
3239                 atomic_add(rp->rbr_blocks_per_page - 1,
3240                            &compound_head(page)->_count);
3241
3242         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3243                 __le32 *rbr = &rp->rbr[start_index + i];
3244
3245                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3246                 addr += rp->rbr_block_size;
3247         }
3248
3249         return 0;
3250 }
3251
3252 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3253 {
3254         int index = rp->rbr_index;
3255
3256         rp->rbr_pending++;
3257         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3258                 int err = niu_rbr_add_page(np, rp, mask, index);
3259
3260                 if (unlikely(err)) {
3261                         rp->rbr_pending--;
3262                         return;
3263                 }
3264
3265                 rp->rbr_index += rp->rbr_blocks_per_page;
3266                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3267                 if (rp->rbr_index == rp->rbr_table_size)
3268                         rp->rbr_index = 0;
3269
3270                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3271                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3272                         rp->rbr_pending = 0;
3273                 }
3274         }
3275 }
3276
3277 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3278 {
3279         unsigned int index = rp->rcr_index;
3280         int num_rcr = 0;
3281
3282         rp->rx_dropped++;
3283         while (1) {
3284                 struct page *page, **link;
3285                 u64 addr, val;
3286                 u32 rcr_size;
3287
3288                 num_rcr++;
3289
3290                 val = le64_to_cpup(&rp->rcr[index]);
3291                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3292                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3293                 page = niu_find_rxpage(rp, addr, &link);
3294
3295                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3296                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3297                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3298                         *link = (struct page *) page->mapping;
3299                         np->ops->unmap_page(np->device, page->index,
3300                                             PAGE_SIZE, DMA_FROM_DEVICE);
3301                         page->index = 0;
3302                         page->mapping = NULL;
3303                         __free_page(page);
3304                         rp->rbr_refill_pending++;
3305                 }
3306
3307                 index = NEXT_RCR(rp, index);
3308                 if (!(val & RCR_ENTRY_MULTI))
3309                         break;
3310
3311         }
3312         rp->rcr_index = index;
3313
3314         return num_rcr;
3315 }
3316
3317 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
3318 {
3319         unsigned int index = rp->rcr_index;
3320         struct sk_buff *skb;
3321         int len, num_rcr;
3322
3323         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3324         if (unlikely(!skb))
3325                 return niu_rx_pkt_ignore(np, rp);
3326
3327         num_rcr = 0;
3328         while (1) {
3329                 struct page *page, **link;
3330                 u32 rcr_size, append_size;
3331                 u64 addr, val, off;
3332
3333                 num_rcr++;
3334
3335                 val = le64_to_cpup(&rp->rcr[index]);
3336
3337                 len = (val & RCR_ENTRY_L2_LEN) >>
3338                         RCR_ENTRY_L2_LEN_SHIFT;
3339                 len -= ETH_FCS_LEN;
3340
3341                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3342                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3343                 page = niu_find_rxpage(rp, addr, &link);
3344
3345                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3346                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3347
3348                 off = addr & ~PAGE_MASK;
3349                 append_size = rcr_size;
3350                 if (num_rcr == 1) {
3351                         int ptype;
3352
3353                         off += 2;
3354                         append_size -= 2;
3355
3356                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3357                         if ((ptype == RCR_PKT_TYPE_TCP ||
3358                              ptype == RCR_PKT_TYPE_UDP) &&
3359                             !(val & (RCR_ENTRY_NOPORT |
3360                                      RCR_ENTRY_ERROR)))
3361                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3362                         else
3363                                 skb->ip_summed = CHECKSUM_NONE;
3364                 }
3365                 if (!(val & RCR_ENTRY_MULTI))
3366                         append_size = len - skb->len;
3367
3368                 niu_rx_skb_append(skb, page, off, append_size);
3369                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3370                         *link = (struct page *) page->mapping;
3371                         np->ops->unmap_page(np->device, page->index,
3372                                             PAGE_SIZE, DMA_FROM_DEVICE);
3373                         page->index = 0;
3374                         page->mapping = NULL;
3375                         rp->rbr_refill_pending++;
3376                 } else
3377                         get_page(page);
3378
3379                 index = NEXT_RCR(rp, index);
3380                 if (!(val & RCR_ENTRY_MULTI))
3381                         break;
3382
3383         }
3384         rp->rcr_index = index;
3385
3386         skb_reserve(skb, NET_IP_ALIGN);
3387         __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
3388
3389         rp->rx_packets++;
3390         rp->rx_bytes += skb->len;
3391
3392         skb->protocol = eth_type_trans(skb, np->dev);
3393         netif_receive_skb(skb);
3394
3395         return num_rcr;
3396 }
3397
3398 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3399 {
3400         int blocks_per_page = rp->rbr_blocks_per_page;
3401         int err, index = rp->rbr_index;
3402
3403         err = 0;
3404         while (index < (rp->rbr_table_size - blocks_per_page)) {
3405                 err = niu_rbr_add_page(np, rp, mask, index);
3406                 if (err)
3407                         break;
3408
3409                 index += blocks_per_page;
3410         }
3411
3412         rp->rbr_index = index;
3413         return err;
3414 }
3415
3416 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3417 {
3418         int i;
3419
3420         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3421                 struct page *page;
3422
3423                 page = rp->rxhash[i];
3424                 while (page) {
3425                         struct page *next = (struct page *) page->mapping;
3426                         u64 base = page->index;
3427
3428                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
3429                                             DMA_FROM_DEVICE);
3430                         page->index = 0;
3431                         page->mapping = NULL;
3432
3433                         __free_page(page);
3434
3435                         page = next;
3436                 }
3437         }
3438
3439         for (i = 0; i < rp->rbr_table_size; i++)
3440                 rp->rbr[i] = cpu_to_le32(0);
3441         rp->rbr_index = 0;
3442 }
3443
3444 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3445 {
3446         struct tx_buff_info *tb = &rp->tx_buffs[idx];
3447         struct sk_buff *skb = tb->skb;
3448         struct tx_pkt_hdr *tp;
3449         u64 tx_flags;
3450         int i, len;
3451
3452         tp = (struct tx_pkt_hdr *) skb->data;
3453         tx_flags = le64_to_cpup(&tp->flags);
3454
3455         rp->tx_packets++;
3456         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3457                          ((tx_flags & TXHDR_PAD) / 2));
3458
3459         len = skb_headlen(skb);
3460         np->ops->unmap_single(np->device, tb->mapping,
3461                               len, DMA_TO_DEVICE);
3462
3463         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3464                 rp->mark_pending--;
3465
3466         tb->skb = NULL;
3467         do {
3468                 idx = NEXT_TX(rp, idx);
3469                 len -= MAX_TX_DESC_LEN;
3470         } while (len > 0);
3471
3472         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3473                 tb = &rp->tx_buffs[idx];
3474                 BUG_ON(tb->skb != NULL);
3475                 np->ops->unmap_page(np->device, tb->mapping,
3476                                     skb_shinfo(skb)->frags[i].size,
3477                                     DMA_TO_DEVICE);
3478                 idx = NEXT_TX(rp, idx);
3479         }
3480
3481         dev_kfree_skb(skb);
3482
3483         return idx;
3484 }
3485
3486 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
3487
3488 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3489 {
3490         struct netdev_queue *txq;
3491         u16 pkt_cnt, tmp;
3492         int cons, index;
3493         u64 cs;
3494
3495         index = (rp - np->tx_rings);
3496         txq = netdev_get_tx_queue(np->dev, index);
3497
3498         cs = rp->tx_cs;
3499         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3500                 goto out;
3501
3502         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3503         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3504                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3505
3506         rp->last_pkt_cnt = tmp;
3507
3508         cons = rp->cons;
3509
3510         niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
3511                np->dev->name, pkt_cnt, cons);
3512
3513         while (pkt_cnt--)
3514                 cons = release_tx_packet(np, rp, cons);
3515
3516         rp->cons = cons;
3517         smp_mb();
3518
3519 out:
3520         if (unlikely(netif_tx_queue_stopped(txq) &&
3521                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3522                 __netif_tx_lock(txq, smp_processor_id());
3523                 if (netif_tx_queue_stopped(txq) &&
3524                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3525                         netif_tx_wake_queue(txq);
3526                 __netif_tx_unlock(txq);
3527         }
3528 }
3529
3530 static inline void niu_sync_rx_discard_stats(struct niu *np,
3531                                              struct rx_ring_info *rp,
3532                                              const int limit)
3533 {
3534         /* This elaborate scheme is needed for reading the RX discard
3535          * counters, as they are only 16-bit and can overflow quickly,
3536          * and because the overflow indication bit is not usable as
3537          * the counter value does not wrap, but remains at max value
3538          * 0xFFFF.
3539          *
3540          * In theory and in practice counters can be lost in between
3541          * reading nr64() and clearing the counter nw64().  For this
3542          * reason, the number of counter clearings nw64() is
3543          * limited/reduced though the limit parameter.
3544          */
3545         int rx_channel = rp->rx_channel;
3546         u32 misc, wred;
3547
3548         /* RXMISC (Receive Miscellaneous Discard Count), covers the
3549          * following discard events: IPP (Input Port Process),
3550          * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3551          * Block Ring) prefetch buffer is empty.
3552          */
3553         misc = nr64(RXMISC(rx_channel));
3554         if (unlikely((misc & RXMISC_COUNT) > limit)) {
3555                 nw64(RXMISC(rx_channel), 0);
3556                 rp->rx_errors += misc & RXMISC_COUNT;
3557
3558                 if (unlikely(misc & RXMISC_OFLOW))
3559                         dev_err(np->device, "rx-%d: Counter overflow "
3560                                 "RXMISC discard\n", rx_channel);
3561
3562                 niudbg(RX_ERR, "%s-rx-%d: MISC drop=%u over=%u\n",
3563                        np->dev->name, rx_channel, misc, misc-limit);
3564         }
3565
3566         /* WRED (Weighted Random Early Discard) by hardware */
3567         wred = nr64(RED_DIS_CNT(rx_channel));
3568         if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3569                 nw64(RED_DIS_CNT(rx_channel), 0);
3570                 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3571
3572                 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3573                         dev_err(np->device, "rx-%d: Counter overflow "
3574                                 "WRED discard\n", rx_channel);
3575
3576                 niudbg(RX_ERR, "%s-rx-%d: WRED drop=%u over=%u\n",
3577                        np->dev->name, rx_channel, wred, wred-limit);
3578         }
3579 }
3580
3581 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
3582 {
3583         int qlen, rcr_done = 0, work_done = 0;
3584         struct rxdma_mailbox *mbox = rp->mbox;
3585         u64 stat;
3586
3587 #if 1
3588         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3589         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3590 #else
3591         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3592         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3593 #endif
3594         mbox->rx_dma_ctl_stat = 0;
3595         mbox->rcrstat_a = 0;
3596
3597         niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
3598                np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
3599
3600         rcr_done = work_done = 0;
3601         qlen = min(qlen, budget);
3602         while (work_done < qlen) {
3603                 rcr_done += niu_process_rx_pkt(np, rp);
3604                 work_done++;
3605         }
3606
3607         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3608                 unsigned int i;
3609
3610                 for (i = 0; i < rp->rbr_refill_pending; i++)
3611                         niu_rbr_refill(np, rp, GFP_ATOMIC);
3612                 rp->rbr_refill_pending = 0;
3613         }
3614
3615         stat = (RX_DMA_CTL_STAT_MEX |
3616                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3617                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3618
3619         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3620
3621         /* Only sync discards stats when qlen indicate potential for drops */
3622         if (qlen > 10)
3623                 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3624
3625         return work_done;
3626 }
3627
3628 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3629 {
3630         u64 v0 = lp->v0;
3631         u32 tx_vec = (v0 >> 32);
3632         u32 rx_vec = (v0 & 0xffffffff);
3633         int i, work_done = 0;
3634
3635         niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
3636                np->dev->name, (unsigned long long) v0);
3637
3638         for (i = 0; i < np->num_tx_rings; i++) {
3639                 struct tx_ring_info *rp = &np->tx_rings[i];
3640                 if (tx_vec & (1 << rp->tx_channel))
3641                         niu_tx_work(np, rp);
3642                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3643         }
3644
3645         for (i = 0; i < np->num_rx_rings; i++) {
3646                 struct rx_ring_info *rp = &np->rx_rings[i];
3647
3648                 if (rx_vec & (1 << rp->rx_channel)) {
3649                         int this_work_done;
3650
3651                         this_work_done = niu_rx_work(np, rp,
3652                                                      budget);
3653
3654                         budget -= this_work_done;
3655                         work_done += this_work_done;
3656                 }
3657                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3658         }
3659
3660         return work_done;
3661 }
3662
3663 static int niu_poll(struct napi_struct *napi, int budget)
3664 {
3665         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3666         struct niu *np = lp->np;
3667         int work_done;
3668
3669         work_done = niu_poll_core(np, lp, budget);
3670
3671         if (work_done < budget) {
3672                 netif_rx_complete(np->dev, napi);
3673                 niu_ldg_rearm(np, lp, 1);
3674         }
3675         return work_done;
3676 }
3677
3678 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3679                                   u64 stat)
3680 {
3681         dev_err(np->device, PFX "%s: RX channel %u errors ( ",
3682                 np->dev->name, rp->rx_channel);
3683
3684         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3685                 printk("RBR_TMOUT ");
3686         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3687                 printk("RSP_CNT ");
3688         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3689                 printk("BYTE_EN_BUS ");
3690         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3691                 printk("RSP_DAT ");
3692         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3693                 printk("RCR_ACK ");
3694         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3695                 printk("RCR_SHA_PAR ");
3696         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3697                 printk("RBR_PRE_PAR ");
3698         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3699                 printk("CONFIG ");
3700         if (stat & RX_DMA_CTL_STAT_RCRINCON)
3701                 printk("RCRINCON ");
3702         if (stat & RX_DMA_CTL_STAT_RCRFULL)
3703                 printk("RCRFULL ");
3704         if (stat & RX_DMA_CTL_STAT_RBRFULL)
3705                 printk("RBRFULL ");
3706         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3707                 printk("RBRLOGPAGE ");
3708         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3709                 printk("CFIGLOGPAGE ");
3710         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3711                 printk("DC_FIDO ");
3712
3713         printk(")\n");
3714 }
3715
3716 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3717 {
3718         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3719         int err = 0;
3720
3721
3722         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3723                     RX_DMA_CTL_STAT_PORT_FATAL))
3724                 err = -EINVAL;
3725
3726         if (err) {
3727                 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
3728                         np->dev->name, rp->rx_channel,
3729                         (unsigned long long) stat);
3730
3731                 niu_log_rxchan_errors(np, rp, stat);
3732         }
3733
3734         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3735              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3736
3737         return err;
3738 }
3739
3740 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3741                                   u64 cs)
3742 {
3743         dev_err(np->device, PFX "%s: TX channel %u errors ( ",
3744                 np->dev->name, rp->tx_channel);
3745
3746         if (cs & TX_CS_MBOX_ERR)
3747                 printk("MBOX ");
3748         if (cs & TX_CS_PKT_SIZE_ERR)
3749                 printk("PKT_SIZE ");
3750         if (cs & TX_CS_TX_RING_OFLOW)
3751                 printk("TX_RING_OFLOW ");
3752         if (cs & TX_CS_PREF_BUF_PAR_ERR)
3753                 printk("PREF_BUF_PAR ");
3754         if (cs & TX_CS_NACK_PREF)
3755                 printk("NACK_PREF ");
3756         if (cs & TX_CS_NACK_PKT_RD)
3757                 printk("NACK_PKT_RD ");
3758         if (cs & TX_CS_CONF_PART_ERR)
3759                 printk("CONF_PART ");
3760         if (cs & TX_CS_PKT_PRT_ERR)
3761                 printk("PKT_PTR ");
3762
3763         printk(")\n");
3764 }
3765
3766 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3767 {
3768         u64 cs, logh, logl;
3769
3770         cs = nr64(TX_CS(rp->tx_channel));
3771         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3772         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3773
3774         dev_err(np->device, PFX "%s: TX channel %u error, "
3775                 "cs[%llx] logh[%llx] logl[%llx]\n",
3776                 np->dev->name, rp->tx_channel,
3777                 (unsigned long long) cs,
3778                 (unsigned long long) logh,
3779                 (unsigned long long) logl);
3780
3781         niu_log_txchan_errors(np, rp, cs);
3782
3783         return -ENODEV;
3784 }
3785
3786 static int niu_mif_interrupt(struct niu *np)
3787 {
3788         u64 mif_status = nr64(MIF_STATUS);
3789         int phy_mdint = 0;
3790
3791         if (np->flags & NIU_FLAGS_XMAC) {
3792                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3793
3794                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3795                         phy_mdint = 1;
3796         }
3797
3798         dev_err(np->device, PFX "%s: MIF interrupt, "
3799                 "stat[%llx] phy_mdint(%d)\n",
3800                 np->dev->name, (unsigned long long) mif_status, phy_mdint);
3801
3802         return -ENODEV;
3803 }
3804
3805 static void niu_xmac_interrupt(struct niu *np)
3806 {
3807         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3808         u64 val;
3809
3810         val = nr64_mac(XTXMAC_STATUS);
3811         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3812                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3813         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3814                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3815         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3816                 mp->tx_fifo_errors++;
3817         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3818                 mp->tx_overflow_errors++;
3819         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3820                 mp->tx_max_pkt_size_errors++;
3821         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3822                 mp->tx_underflow_errors++;
3823
3824         val = nr64_mac(XRXMAC_STATUS);
3825         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3826                 mp->rx_local_faults++;
3827         if (val & XRXMAC_STATUS_RFLT_DET)
3828                 mp->rx_remote_faults++;
3829         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3830                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3831         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3832                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3833         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3834                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3835         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3836                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3837         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3838                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3839         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3840                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3841         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3842                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3843         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3844                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3845         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3846                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3847         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3848                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3849         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3850                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3851         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3852                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3853         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3854                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3855         if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
3856                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3857         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3858                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3859         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3860                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3861         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3862                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3863         if (val & XRXMAC_STATUS_RXUFLOW)
3864                 mp->rx_underflows++;
3865         if (val & XRXMAC_STATUS_RXOFLOW)
3866                 mp->rx_overflows++;
3867
3868         val = nr64_mac(XMAC_FC_STAT);
3869         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3870                 mp->pause_off_state++;
3871         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3872                 mp->pause_on_state++;
3873         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3874                 mp->pause_received++;
3875 }
3876
3877 static void niu_bmac_interrupt(struct niu *np)
3878 {
3879         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3880         u64 val;
3881
3882         val = nr64_mac(BTXMAC_STATUS);
3883         if (val & BTXMAC_STATUS_UNDERRUN)
3884                 mp->tx_underflow_errors++;
3885         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3886                 mp->tx_max_pkt_size_errors++;
3887         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
3888                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
3889         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
3890                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
3891
3892         val = nr64_mac(BRXMAC_STATUS);
3893         if (val & BRXMAC_STATUS_OVERFLOW)
3894                 mp->rx_overflows++;
3895         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
3896                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
3897         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
3898                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3899         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
3900                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3901         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
3902                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
3903
3904         val = nr64_mac(BMAC_CTRL_STATUS);
3905         if (val & BMAC_CTRL_STATUS_NOPAUSE)
3906                 mp->pause_off_state++;
3907         if (val & BMAC_CTRL_STATUS_PAUSE)
3908                 mp->pause_on_state++;
3909         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
3910                 mp->pause_received++;
3911 }
3912
3913 static int niu_mac_interrupt(struct niu *np)
3914 {
3915         if (np->flags & NIU_FLAGS_XMAC)
3916                 niu_xmac_interrupt(np);
3917         else
3918                 niu_bmac_interrupt(np);
3919
3920         return 0;
3921 }
3922
3923 static void niu_log_device_error(struct niu *np, u64 stat)
3924 {
3925         dev_err(np->device, PFX "%s: Core device errors ( ",
3926                 np->dev->name);
3927
3928         if (stat & SYS_ERR_MASK_META2)
3929                 printk("META2 ");
3930         if (stat & SYS_ERR_MASK_META1)
3931                 printk("META1 ");
3932         if (stat & SYS_ERR_MASK_PEU)
3933                 printk("PEU ");
3934         if (stat & SYS_ERR_MASK_TXC)
3935                 printk("TXC ");
3936         if (stat & SYS_ERR_MASK_RDMC)
3937                 printk("RDMC ");
3938         if (stat & SYS_ERR_MASK_TDMC)
3939                 printk("TDMC ");
3940         if (stat & SYS_ERR_MASK_ZCP)
3941                 printk("ZCP ");
3942         if (stat & SYS_ERR_MASK_FFLP)
3943                 printk("FFLP ");
3944         if (stat & SYS_ERR_MASK_IPP)
3945                 printk("IPP ");
3946         if (stat & SYS_ERR_MASK_MAC)
3947                 printk("MAC ");
3948         if (stat & SYS_ERR_MASK_SMX)
3949                 printk("SMX ");
3950
3951         printk(")\n");
3952 }
3953
3954 static int niu_device_error(struct niu *np)
3955 {
3956         u64 stat = nr64(SYS_ERR_STAT);
3957
3958         dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
3959                 np->dev->name, (unsigned long long) stat);
3960
3961         niu_log_device_error(np, stat);
3962
3963         return -ENODEV;
3964 }
3965
3966 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
3967                               u64 v0, u64 v1, u64 v2)
3968 {
3969
3970         int i, err = 0;
3971
3972         lp->v0 = v0;
3973         lp->v1 = v1;
3974         lp->v2 = v2;
3975
3976         if (v1 & 0x00000000ffffffffULL) {
3977                 u32 rx_vec = (v1 & 0xffffffff);
3978
3979                 for (i = 0; i < np->num_rx_rings; i++) {
3980                         struct rx_ring_info *rp = &np->rx_rings[i];
3981
3982                         if (rx_vec & (1 << rp->rx_channel)) {
3983                                 int r = niu_rx_error(np, rp);
3984                                 if (r) {
3985                                         err = r;
3986                                 } else {
3987                                         if (!v0)
3988                                                 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3989                                                      RX_DMA_CTL_STAT_MEX);
3990                                 }
3991                         }
3992                 }
3993         }
3994         if (v1 & 0x7fffffff00000000ULL) {
3995                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
3996
3997                 for (i = 0; i < np->num_tx_rings; i++) {
3998                         struct tx_ring_info *rp = &np->tx_rings[i];
3999
4000                         if (tx_vec & (1 << rp->tx_channel)) {
4001                                 int r = niu_tx_error(np, rp);
4002                                 if (r)
4003                                         err = r;
4004                         }
4005                 }
4006         }
4007         if ((v0 | v1) & 0x8000000000000000ULL) {
4008                 int r = niu_mif_interrupt(np);
4009                 if (r)
4010                         err = r;
4011         }
4012         if (v2) {
4013                 if (v2 & 0x01ef) {
4014                         int r = niu_mac_interrupt(np);
4015                         if (r)
4016                                 err = r;
4017                 }
4018                 if (v2 & 0x0210) {
4019                         int r = niu_device_error(np);
4020                         if (r)
4021                                 err = r;
4022                 }
4023         }
4024
4025         if (err)
4026                 niu_enable_interrupts(np, 0);
4027
4028         return err;
4029 }
4030
4031 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4032                             int ldn)
4033 {
4034         struct rxdma_mailbox *mbox = rp->mbox;
4035         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4036
4037         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4038                       RX_DMA_CTL_STAT_RCRTO);
4039         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4040
4041         niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
4042                np->dev->name, (unsigned long long) stat);
4043 }
4044
4045 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4046                             int ldn)
4047 {
4048         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4049
4050         niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
4051                np->dev->name, (unsigned long long) rp->tx_cs);
4052 }
4053
4054 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4055 {
4056         struct niu_parent *parent = np->parent;
4057         u32 rx_vec, tx_vec;
4058         int i;
4059
4060         tx_vec = (v0 >> 32);
4061         rx_vec = (v0 & 0xffffffff);
4062
4063         for (i = 0; i < np->num_rx_rings; i++) {
4064                 struct rx_ring_info *rp = &np->rx_rings[i];
4065                 int ldn = LDN_RXDMA(rp->rx_channel);
4066
4067                 if (parent->ldg_map[ldn] != ldg)
4068                         continue;
4069
4070                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4071                 if (rx_vec & (1 << rp->rx_channel))
4072                         niu_rxchan_intr(np, rp, ldn);
4073         }
4074
4075         for (i = 0; i < np->num_tx_rings; i++) {
4076                 struct tx_ring_info *rp = &np->tx_rings[i];
4077                 int ldn = LDN_TXDMA(rp->tx_channel);
4078
4079                 if (parent->ldg_map[ldn] != ldg)
4080                         continue;
4081
4082                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4083                 if (tx_vec & (1 << rp->tx_channel))
4084                         niu_txchan_intr(np, rp, ldn);
4085         }
4086 }
4087
4088 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4089                               u64 v0, u64 v1, u64 v2)
4090 {
4091         if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
4092                 lp->v0 = v0;
4093                 lp->v1 = v1;
4094                 lp->v2 = v2;
4095                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4096                 __netif_rx_schedule(np->dev, &lp->napi);
4097         }
4098 }
4099
4100 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4101 {
4102         struct niu_ldg *lp = dev_id;
4103         struct niu *np = lp->np;
4104         int ldg = lp->ldg_num;
4105         unsigned long flags;
4106         u64 v0, v1, v2;
4107
4108         if (netif_msg_intr(np))
4109                 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
4110                        lp, ldg);
4111
4112         spin_lock_irqsave(&np->lock, flags);
4113
4114         v0 = nr64(LDSV0(ldg));
4115         v1 = nr64(LDSV1(ldg));
4116         v2 = nr64(LDSV2(ldg));
4117
4118         if (netif_msg_intr(np))
4119                 printk("v0[%llx] v1[%llx] v2[%llx]\n",
4120                        (unsigned long long) v0,
4121                        (unsigned long long) v1,
4122                        (unsigned long long) v2);
4123
4124         if (unlikely(!v0 && !v1 && !v2)) {
4125                 spin_unlock_irqrestore(&np->lock, flags);
4126                 return IRQ_NONE;
4127         }
4128
4129         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4130                 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4131                 if (err)
4132                         goto out;
4133         }
4134         if (likely(v0 & ~((u64)1 << LDN_MIF)))
4135                 niu_schedule_napi(np, lp, v0, v1, v2);
4136         else
4137                 niu_ldg_rearm(np, lp, 1);
4138 out:
4139         spin_unlock_irqrestore(&np->lock, flags);
4140
4141         return IRQ_HANDLED;
4142 }
4143
4144 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4145 {
4146         if (rp->mbox) {
4147                 np->ops->free_coherent(np->device,
4148                                        sizeof(struct rxdma_mailbox),
4149                                        rp->mbox, rp->mbox_dma);
4150                 rp->mbox = NULL;
4151         }
4152         if (rp->rcr) {
4153                 np->ops->free_coherent(np->device,
4154                                        MAX_RCR_RING_SIZE * sizeof(__le64),
4155                                        rp->rcr, rp->rcr_dma);
4156                 rp->rcr = NULL;
4157                 rp->rcr_table_size = 0;
4158                 rp->rcr_index = 0;
4159         }
4160         if (rp->rbr) {
4161                 niu_rbr_free(np, rp);
4162
4163                 np->ops->free_coherent(np->device,
4164                                        MAX_RBR_RING_SIZE * sizeof(__le32),
4165                                        rp->rbr, rp->rbr_dma);
4166                 rp->rbr = NULL;
4167                 rp->rbr_table_size = 0;
4168                 rp->rbr_index = 0;
4169         }
4170         kfree(rp->rxhash);
4171         rp->rxhash = NULL;
4172 }
4173
4174 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4175 {
4176         if (rp->mbox) {
4177                 np->ops->free_coherent(np->device,
4178                                        sizeof(struct txdma_mailbox),
4179                                        rp->mbox, rp->mbox_dma);
4180                 rp->mbox = NULL;
4181         }
4182         if (rp->descr) {
4183                 int i;
4184
4185                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4186                         if (rp->tx_buffs[i].skb)
4187                                 (void) release_tx_packet(np, rp, i);
4188                 }
4189
4190                 np->ops->free_coherent(np->device,
4191                                        MAX_TX_RING_SIZE * sizeof(__le64),
4192                                        rp->descr, rp->descr_dma);
4193                 rp->descr = NULL;
4194                 rp->pending = 0;
4195                 rp->prod = 0;
4196                 rp->cons = 0;
4197                 rp->wrap_bit = 0;
4198         }
4199 }
4200
4201 static void niu_free_channels(struct niu *np)
4202 {
4203         int i;
4204
4205         if (np->rx_rings) {
4206                 for (i = 0; i < np->num_rx_rings; i++) {
4207                         struct rx_ring_info *rp = &np->rx_rings[i];
4208
4209                         niu_free_rx_ring_info(np, rp);
4210                 }
4211                 kfree(np->rx_rings);
4212                 np->rx_rings = NULL;
4213                 np->num_rx_rings = 0;
4214         }
4215
4216         if (np->tx_rings) {
4217                 for (i = 0; i < np->num_tx_rings; i++) {
4218                         struct tx_ring_info *rp = &np->tx_rings[i];
4219
4220                         niu_free_tx_ring_info(np, rp);
4221                 }
4222                 kfree(np->tx_rings);
4223                 np->tx_rings = NULL;
4224                 np->num_tx_rings = 0;
4225         }
4226 }
4227
4228 static int niu_alloc_rx_ring_info(struct niu *np,
4229                                   struct rx_ring_info *rp)
4230 {
4231         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4232
4233         rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4234                              GFP_KERNEL);
4235         if (!rp->rxhash)
4236                 return -ENOMEM;
4237
4238         rp->mbox = np->ops->alloc_coherent(np->device,
4239                                            sizeof(struct rxdma_mailbox),
4240                                            &rp->mbox_dma, GFP_KERNEL);
4241         if (!rp->mbox)
4242                 return -ENOMEM;
4243         if ((unsigned long)rp->mbox & (64UL - 1)) {
4244                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4245                         "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
4246                 return -EINVAL;
4247         }
4248
4249         rp->rcr = np->ops->alloc_coherent(np->device,
4250                                           MAX_RCR_RING_SIZE * sizeof(__le64),
4251                                           &rp->rcr_dma, GFP_KERNEL);
4252         if (!rp->rcr)
4253                 return -ENOMEM;
4254         if ((unsigned long)rp->rcr & (64UL - 1)) {
4255                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4256                         "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
4257                 return -EINVAL;
4258         }
4259         rp->rcr_table_size = MAX_RCR_RING_SIZE;
4260         rp->rcr_index = 0;
4261
4262         rp->rbr = np->ops->alloc_coherent(np->device,
4263                                           MAX_RBR_RING_SIZE * sizeof(__le32),
4264                                           &rp->rbr_dma, GFP_KERNEL);
4265         if (!rp->rbr)
4266                 return -ENOMEM;
4267         if ((unsigned long)rp->rbr & (64UL - 1)) {
4268                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4269                         "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
4270                 return -EINVAL;
4271         }
4272         rp->rbr_table_size = MAX_RBR_RING_SIZE;
4273         rp->rbr_index = 0;
4274         rp->rbr_pending = 0;
4275
4276         return 0;
4277 }
4278
4279 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4280 {
4281         int mtu = np->dev->mtu;
4282
4283         /* These values are recommended by the HW designers for fair
4284          * utilization of DRR amongst the rings.
4285          */
4286         rp->max_burst = mtu + 32;
4287         if (rp->max_burst > 4096)
4288                 rp->max_burst = 4096;
4289 }
4290
4291 static int niu_alloc_tx_ring_info(struct niu *np,
4292                                   struct tx_ring_info *rp)
4293 {
4294         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4295
4296         rp->mbox = np->ops->alloc_coherent(np->device,
4297                                            sizeof(struct txdma_mailbox),
4298                                            &rp->mbox_dma, GFP_KERNEL);
4299         if (!rp->mbox)
4300                 return -ENOMEM;
4301         if ((unsigned long)rp->mbox & (64UL - 1)) {
4302                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4303                         "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
4304                 return -EINVAL;
4305         }
4306
4307         rp->descr = np->ops->alloc_coherent(np->device,
4308                                             MAX_TX_RING_SIZE * sizeof(__le64),
4309                                             &rp->descr_dma, GFP_KERNEL);
4310         if (!rp->descr)
4311                 return -ENOMEM;
4312         if ((unsigned long)rp->descr & (64UL - 1)) {
4313                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4314                         "TXDMA descr table %p\n", np->dev->name, rp->descr);
4315                 return -EINVAL;
4316         }
4317
4318         rp->pending = MAX_TX_RING_SIZE;
4319         rp->prod = 0;
4320         rp->cons = 0;
4321         rp->wrap_bit = 0;
4322
4323         /* XXX make these configurable... XXX */
4324         rp->mark_freq = rp->pending / 4;
4325
4326         niu_set_max_burst(np, rp);
4327
4328         return 0;
4329 }
4330
4331 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4332 {
4333         u16 bss;
4334
4335         bss = min(PAGE_SHIFT, 15);
4336
4337         rp->rbr_block_size = 1 << bss;
4338         rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4339
4340         rp->rbr_sizes[0] = 256;
4341         rp->rbr_sizes[1] = 1024;
4342         if (np->dev->mtu > ETH_DATA_LEN) {
4343                 switch (PAGE_SIZE) {
4344                 case 4 * 1024:
4345                         rp->rbr_sizes[2] = 4096;
4346                         break;
4347
4348                 default:
4349                         rp->rbr_sizes[2] = 8192;
4350                         break;
4351                 }
4352         } else {
4353                 rp->rbr_sizes[2] = 2048;
4354         }
4355         rp->rbr_sizes[3] = rp->rbr_block_size;
4356 }
4357
4358 static int niu_alloc_channels(struct niu *np)
4359 {
4360         struct niu_parent *parent = np->parent;
4361         int first_rx_channel, first_tx_channel;
4362         int i, port, err;
4363
4364         port = np->port;
4365         first_rx_channel = first_tx_channel = 0;
4366         for (i = 0; i < port; i++) {
4367                 first_rx_channel += parent->rxchan_per_port[i];
4368                 first_tx_channel += parent->txchan_per_port[i];
4369         }
4370
4371         np->num_rx_rings = parent->rxchan_per_port[port];
4372         np->num_tx_rings = parent->txchan_per_port[port];
4373
4374         np->dev->real_num_tx_queues = np->num_tx_rings;
4375
4376         np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
4377                                GFP_KERNEL);
4378         err = -ENOMEM;
4379         if (!np->rx_rings)
4380                 goto out_err;
4381
4382         for (i = 0; i < np->num_rx_rings; i++) {
4383                 struct rx_ring_info *rp = &np->rx_rings[i];
4384
4385                 rp->np = np;
4386                 rp->rx_channel = first_rx_channel + i;
4387
4388                 err = niu_alloc_rx_ring_info(np, rp);
4389                 if (err)
4390                         goto out_err;
4391
4392                 niu_size_rbr(np, rp);
4393
4394                 /* XXX better defaults, configurable, etc... XXX */
4395                 rp->nonsyn_window = 64;
4396                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4397                 rp->syn_window = 64;
4398                 rp->syn_threshold = rp->rcr_table_size - 64;
4399                 rp->rcr_pkt_threshold = 16;
4400                 rp->rcr_timeout = 8;
4401                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4402                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4403                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4404
4405                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4406                 if (err)
4407                         return err;
4408         }
4409
4410         np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
4411                                GFP_KERNEL);
4412         err = -ENOMEM;
4413         if (!np->tx_rings)
4414                 goto out_err;
4415
4416         for (i = 0; i < np->num_tx_rings; i++) {
4417                 struct tx_ring_info *rp = &np->tx_rings[i];
4418
4419                 rp->np = np;
4420                 rp->tx_channel = first_tx_channel + i;
4421
4422                 err = niu_alloc_tx_ring_info(np, rp);
4423                 if (err)
4424                         goto out_err;
4425         }
4426
4427         return 0;
4428
4429 out_err:
4430         niu_free_channels(np);
4431         return err;
4432 }
4433
4434 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4435 {
4436         int limit = 1000;
4437
4438         while (--limit > 0) {
4439                 u64 val = nr64(TX_CS(channel));
4440                 if (val & TX_CS_SNG_STATE)
4441                         return 0;
4442         }
4443         return -ENODEV;
4444 }
4445
4446 static int niu_tx_channel_stop(struct niu *np, int channel)
4447 {
4448         u64 val = nr64(TX_CS(channel));
4449
4450         val |= TX_CS_STOP_N_GO;
4451         nw64(TX_CS(channel), val);
4452
4453         return niu_tx_cs_sng_poll(np, channel);
4454 }
4455
4456 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4457 {
4458         int limit = 1000;
4459
4460         while (--limit > 0) {
4461                 u64 val = nr64(TX_CS(channel));
4462                 if (!(val & TX_CS_RST))
4463                         return 0;
4464         }
4465         return -ENODEV;
4466 }
4467
4468 static int niu_tx_channel_reset(struct niu *np, int channel)
4469 {
4470         u64 val = nr64(TX_CS(channel));
4471         int err;
4472
4473         val |= TX_CS_RST;
4474         nw64(TX_CS(channel), val);
4475
4476         err = niu_tx_cs_reset_poll(np, channel);
4477         if (!err)
4478                 nw64(TX_RING_KICK(channel), 0);
4479
4480         return err;
4481 }
4482
4483 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4484 {
4485         u64 val;
4486
4487         nw64(TX_LOG_MASK1(channel), 0);
4488         nw64(TX_LOG_VAL1(channel), 0);
4489         nw64(TX_LOG_MASK2(channel), 0);
4490         nw64(TX_LOG_VAL2(channel), 0);
4491         nw64(TX_LOG_PAGE_RELO1(channel), 0);
4492         nw64(TX_LOG_PAGE_RELO2(channel), 0);
4493         nw64(TX_LOG_PAGE_HDL(channel), 0);
4494
4495         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4496         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4497         nw64(TX_LOG_PAGE_VLD(channel), val);
4498
4499         /* XXX TXDMA 32bit mode? XXX */
4500
4501         return 0;
4502 }
4503
4504 static void niu_txc_enable_port(struct niu *np, int on)
4505 {
4506         unsigned long flags;
4507         u64 val, mask;
4508
4509         niu_lock_parent(np, flags);
4510         val = nr64(TXC_CONTROL);
4511         mask = (u64)1 << np->port;
4512         if (on) {
4513                 val |= TXC_CONTROL_ENABLE | mask;
4514         } else {
4515                 val &= ~mask;
4516                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4517                         val &= ~TXC_CONTROL_ENABLE;
4518         }
4519         nw64(TXC_CONTROL, val);
4520         niu_unlock_parent(np, flags);
4521 }
4522
4523 static void niu_txc_set_imask(struct niu *np, u64 imask)
4524 {
4525         unsigned long flags;
4526         u64 val;
4527
4528         niu_lock_parent(np, flags);
4529         val = nr64(TXC_INT_MASK);
4530         val &= ~TXC_INT_MASK_VAL(np->port);
4531         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4532         niu_unlock_parent(np, flags);
4533 }
4534
4535 static void niu_txc_port_dma_enable(struct niu *np, int on)
4536 {
4537         u64 val = 0;
4538
4539         if (on) {
4540                 int i;
4541
4542                 for (i = 0; i < np->num_tx_rings; i++)
4543                         val |= (1 << np->tx_rings[i].tx_channel);
4544         }
4545         nw64(TXC_PORT_DMA(np->port), val);
4546 }
4547
4548 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4549 {
4550         int err, channel = rp->tx_channel;
4551         u64 val, ring_len;
4552
4553         err = niu_tx_channel_stop(np, channel);
4554         if (err)
4555                 return err;
4556
4557         err = niu_tx_channel_reset(np, channel);
4558         if (err)
4559                 return err;
4560
4561         err = niu_tx_channel_lpage_init(np, channel);
4562         if (err)
4563                 return err;
4564
4565         nw64(TXC_DMA_MAX(channel), rp->max_burst);
4566         nw64(TX_ENT_MSK(channel), 0);
4567
4568         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4569                               TX_RNG_CFIG_STADDR)) {
4570                 dev_err(np->device, PFX "%s: TX ring channel %d "
4571                         "DMA addr (%llx) is not aligned.\n",
4572                         np->dev->name, channel,
4573                         (unsigned long long) rp->descr_dma);
4574                 return -EINVAL;
4575         }
4576
4577         /* The length field in TX_RNG_CFIG is measured in 64-byte
4578          * blocks.  rp->pending is the number of TX descriptors in
4579          * our ring, 8 bytes each, thus we divide by 8 bytes more
4580          * to get the proper value the chip wants.
4581          */
4582         ring_len = (rp->pending / 8);
4583
4584         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4585                rp->descr_dma);
4586         nw64(TX_RNG_CFIG(channel), val);
4587
4588         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4589             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4590                 dev_err(np->device, PFX "%s: TX ring channel %d "
4591                         "MBOX addr (%llx) is has illegal bits.\n",
4592                         np->dev->name, channel,
4593                         (unsigned long long) rp->mbox_dma);
4594                 return -EINVAL;
4595         }
4596         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4597         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4598
4599         nw64(TX_CS(channel), 0);
4600
4601         rp->last_pkt_cnt = 0;
4602
4603         return 0;
4604 }
4605
4606 static void niu_init_rdc_groups(struct niu *np)
4607 {
4608         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4609         int i, first_table_num = tp->first_table_num;
4610
4611         for (i = 0; i < tp->num_tables; i++) {
4612                 struct rdc_table *tbl = &tp->tables[i];
4613                 int this_table = first_table_num + i;
4614                 int slot;
4615
4616                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4617                         nw64(RDC_TBL(this_table, slot),
4618                              tbl->rxdma_channel[slot]);
4619         }
4620
4621         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4622 }
4623
4624 static void niu_init_drr_weight(struct niu *np)
4625 {
4626         int type = phy_decode(np->parent->port_phy, np->port);
4627         u64 val;
4628
4629         switch (type) {
4630         case PORT_TYPE_10G:
4631                 val = PT_DRR_WEIGHT_DEFAULT_10G;
4632                 break;
4633
4634         case PORT_TYPE_1G:
4635         default:
4636                 val = PT_DRR_WEIGHT_DEFAULT_1G;
4637                 break;
4638         }
4639         nw64(PT_DRR_WT(np->port), val);
4640 }
4641
4642 static int niu_init_hostinfo(struct niu *np)
4643 {
4644         struct niu_parent *parent = np->parent;
4645         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4646         int i, err, num_alt = niu_num_alt_addr(np);
4647         int first_rdc_table = tp->first_table_num;
4648
4649         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4650         if (err)
4651                 return err;
4652
4653         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4654         if (err)
4655                 return err;
4656
4657         for (i = 0; i < num_alt; i++) {
4658                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4659                 if (err)
4660                         return err;
4661         }
4662
4663         return 0;
4664 }
4665
4666 static int niu_rx_channel_reset(struct niu *np, int channel)
4667 {
4668         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4669                                       RXDMA_CFIG1_RST, 1000, 10,
4670                                       "RXDMA_CFIG1");
4671 }
4672
4673 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4674 {
4675         u64 val;
4676
4677         nw64(RX_LOG_MASK1(channel), 0);
4678         nw64(RX_LOG_VAL1(channel), 0);
4679         nw64(RX_LOG_MASK2(channel), 0);
4680         nw64(RX_LOG_VAL2(channel), 0);
4681         nw64(RX_LOG_PAGE_RELO1(channel), 0);
4682         nw64(RX_LOG_PAGE_RELO2(channel), 0);
4683         nw64(RX_LOG_PAGE_HDL(channel), 0);
4684
4685         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4686         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4687         nw64(RX_LOG_PAGE_VLD(channel), val);
4688
4689         return 0;
4690 }
4691
4692 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4693 {
4694         u64 val;
4695
4696         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4697                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4698                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4699                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4700         nw64(RDC_RED_PARA(rp->rx_channel), val);
4701 }
4702
4703 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4704 {
4705         u64 val = 0;
4706
4707         switch (rp->rbr_block_size) {
4708         case 4 * 1024:
4709                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4710                 break;
4711         case 8 * 1024:
4712                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4713                 break;
4714         case 16 * 1024:
4715                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4716                 break;
4717         case 32 * 1024:
4718                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4719                 break;
4720         default:
4721                 return -EINVAL;
4722         }
4723         val |= RBR_CFIG_B_VLD2;
4724         switch (rp->rbr_sizes[2]) {
4725         case 2 * 1024:
4726                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4727                 break;
4728         case 4 * 1024:
4729                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4730                 break;
4731         case 8 * 1024:
4732                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4733                 break;
4734         case 16 * 1024:
4735                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4736                 break;
4737
4738         default:
4739                 return -EINVAL;
4740         }
4741         val |= RBR_CFIG_B_VLD1;
4742         switch (rp->rbr_sizes[1]) {
4743         case 1 * 1024:
4744                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4745                 break;
4746         case 2 * 1024:
4747                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4748                 break;
4749         case 4 * 1024:
4750                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4751                 break;
4752         case 8 * 1024:
4753                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4754                 break;
4755
4756         default:
4757                 return -EINVAL;
4758         }
4759         val |= RBR_CFIG_B_VLD0;
4760         switch (rp->rbr_sizes[0]) {
4761         case 256:
4762                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4763                 break;
4764         case 512:
4765                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4766                 break;
4767         case 1 * 1024:
4768                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4769                 break;
4770         case 2 * 1024:
4771                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4772                 break;
4773
4774         default:
4775                 return -EINVAL;
4776         }
4777
4778         *ret = val;
4779         return 0;
4780 }
4781
4782 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4783 {
4784         u64 val = nr64(RXDMA_CFIG1(channel));
4785         int limit;
4786
4787         if (on)
4788                 val |= RXDMA_CFIG1_EN;
4789         else
4790                 val &= ~RXDMA_CFIG1_EN;
4791         nw64(RXDMA_CFIG1(channel), val);
4792
4793         limit = 1000;
4794         while (--limit > 0) {
4795                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4796                         break;
4797                 udelay(10);
4798         }
4799         if (limit <= 0)
4800                 return -ENODEV;
4801         return 0;
4802 }
4803
4804 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4805 {
4806         int err, channel = rp->rx_channel;
4807         u64 val;
4808
4809         err = niu_rx_channel_reset(np, channel);
4810         if (err)
4811                 return err;
4812
4813         err = niu_rx_channel_lpage_init(np, channel);
4814         if (err)
4815                 return err;
4816
4817         niu_rx_channel_wred_init(np, rp);
4818
4819         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4820         nw64(RX_DMA_CTL_STAT(channel),
4821              (RX_DMA_CTL_STAT_MEX |
4822               RX_DMA_CTL_STAT_RCRTHRES |
4823               RX_DMA_CTL_STAT_RCRTO |
4824               RX_DMA_CTL_STAT_RBR_EMPTY));
4825         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4826         nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
4827         nw64(RBR_CFIG_A(channel),
4828              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4829              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4830         err = niu_compute_rbr_cfig_b(rp, &val);
4831         if (err)
4832                 return err;
4833         nw64(RBR_CFIG_B(channel), val);
4834         nw64(RCRCFIG_A(channel),
4835              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4836              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4837         nw64(RCRCFIG_B(channel),
4838              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4839              RCRCFIG_B_ENTOUT |
4840              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4841
4842         err = niu_enable_rx_channel(np, channel, 1);
4843         if (err)
4844                 return err;
4845
4846         nw64(RBR_KICK(channel), rp->rbr_index);
4847
4848         val = nr64(RX_DMA_CTL_STAT(channel));
4849         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4850         nw64(RX_DMA_CTL_STAT(channel), val);
4851
4852         return 0;
4853 }
4854
4855 static int niu_init_rx_channels(struct niu *np)
4856 {
4857         unsigned long flags;
4858         u64 seed = jiffies_64;
4859         int err, i;
4860
4861         niu_lock_parent(np, flags);
4862         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4863         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4864         niu_unlock_parent(np, flags);
4865
4866         /* XXX RXDMA 32bit mode? XXX */
4867
4868         niu_init_rdc_groups(np);
4869         niu_init_drr_weight(np);
4870
4871         err = niu_init_hostinfo(np);
4872         if (err)
4873                 return err;
4874
4875         for (i = 0; i < np->num_rx_rings; i++) {
4876                 struct rx_ring_info *rp = &np->rx_rings[i];
4877
4878                 err = niu_init_one_rx_channel(np, rp);
4879                 if (err)
4880                         return err;
4881         }
4882
4883         return 0;
4884 }
4885
4886 static int niu_set_ip_frag_rule(struct niu *np)
4887 {
4888         struct niu_parent *parent = np->parent;
4889         struct niu_classifier *cp = &np->clas;
4890         struct niu_tcam_entry *tp;
4891         int index, err;
4892
4893         /* XXX fix this allocation scheme XXX */
4894         index = cp->tcam_index;
4895         tp = &parent->tcam[index];
4896
4897         /* Note that the noport bit is the same in both ipv4 and
4898          * ipv6 format TCAM entries.
4899          */
4900         memset(tp, 0, sizeof(*tp));
4901         tp->key[1] = TCAM_V4KEY1_NOPORT;
4902         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
4903         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
4904                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
4905         err = tcam_write(np, index, tp->key, tp->key_mask);
4906         if (err)
4907                 return err;
4908         err = tcam_assoc_write(np, index, tp->assoc_data);
4909         if (err)
4910                 return err;
4911
4912         return 0;
4913 }
4914
4915 static int niu_init_classifier_hw(struct niu *np)
4916 {
4917         struct niu_parent *parent = np->parent;
4918         struct niu_classifier *cp = &np->clas;
4919         int i, err;
4920
4921         nw64(H1POLY, cp->h1_init);
4922         nw64(H2POLY, cp->h2_init);
4923
4924         err = niu_init_hostinfo(np);
4925         if (err)
4926                 return err;
4927
4928         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
4929                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
4930
4931                 vlan_tbl_write(np, i, np->port,
4932                                vp->vlan_pref, vp->rdc_num);
4933         }
4934
4935         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
4936                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
4937
4938                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
4939                                                 ap->rdc_num, ap->mac_pref);
4940                 if (err)
4941                         return err;
4942         }
4943
4944         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
4945                 int index = i - CLASS_CODE_USER_PROG1;
4946
4947                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
4948                 if (err)
4949                         return err;
4950                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
4951                 if (err)
4952                         return err;
4953         }
4954
4955         err = niu_set_ip_frag_rule(np);
4956         if (err)
4957                 return err;
4958
4959         tcam_enable(np, 1);
4960
4961         return 0;
4962 }
4963
4964 static int niu_zcp_write(struct niu *np, int index, u64 *data)
4965 {
4966         nw64(ZCP_RAM_DATA0, data[0]);
4967         nw64(ZCP_RAM_DATA1, data[1]);
4968         nw64(ZCP_RAM_DATA2, data[2]);
4969         nw64(ZCP_RAM_DATA3, data[3]);
4970         nw64(ZCP_RAM_DATA4, data[4]);
4971         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
4972         nw64(ZCP_RAM_ACC,
4973              (ZCP_RAM_ACC_WRITE |
4974               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
4975               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
4976
4977         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4978                                    1000, 100);
4979 }
4980
4981 static int niu_zcp_read(struct niu *np, int index, u64 *data)
4982 {
4983         int err;
4984
4985         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4986                                   1000, 100);
4987         if (err) {
4988                 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
4989                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
4990                         (unsigned long long) nr64(ZCP_RAM_ACC));
4991                 return err;
4992         }
4993
4994         nw64(ZCP_RAM_ACC,
4995              (ZCP_RAM_ACC_READ |
4996               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
4997               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
4998
4999         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5000                                   1000, 100);
5001         if (err) {
5002                 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
5003                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
5004                         (unsigned long long) nr64(ZCP_RAM_ACC));
5005                 return err;
5006         }
5007
5008         data[0] = nr64(ZCP_RAM_DATA0);
5009         data[1] = nr64(ZCP_RAM_DATA1);
5010         data[2] = nr64(ZCP_RAM_DATA2);
5011         data[3] = nr64(ZCP_RAM_DATA3);
5012         data[4] = nr64(ZCP_RAM_DATA4);
5013
5014         return 0;
5015 }
5016
5017 static void niu_zcp_cfifo_reset(struct niu *np)
5018 {
5019         u64 val = nr64(RESET_CFIFO);
5020
5021         val |= RESET_CFIFO_RST(np->port);
5022         nw64(RESET_CFIFO, val);
5023         udelay(10);
5024
5025         val &= ~RESET_CFIFO_RST(np->port);
5026         nw64(RESET_CFIFO, val);
5027 }
5028
5029 static int niu_init_zcp(struct niu *np)
5030 {
5031         u64 data[5], rbuf[5];
5032         int i, max, err;
5033
5034         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5035                 if (np->port == 0 || np->port == 1)
5036                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
5037                 else
5038                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
5039         } else
5040                 max = NIU_CFIFO_ENTRIES;
5041
5042         data[0] = 0;
5043         data[1] = 0;
5044         data[2] = 0;
5045         data[3] = 0;
5046         data[4] = 0;
5047
5048         for (i = 0; i < max; i++) {
5049                 err = niu_zcp_write(np, i, data);
5050                 if (err)
5051                         return err;
5052                 err = niu_zcp_read(np, i, rbuf);
5053                 if (err)
5054                         return err;
5055         }
5056
5057         niu_zcp_cfifo_reset(np);
5058         nw64(CFIFO_ECC(np->port), 0);
5059         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5060         (void) nr64(ZCP_INT_STAT);
5061         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5062
5063         return 0;
5064 }
5065
5066 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5067 {
5068         u64 val = nr64_ipp(IPP_CFIG);
5069
5070         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5071         nw64_ipp(IPP_DFIFO_WR_PTR, index);
5072         nw64_ipp(IPP_DFIFO_WR0, data[0]);
5073         nw64_ipp(IPP_DFIFO_WR1, data[1]);
5074         nw64_ipp(IPP_DFIFO_WR2, data[2]);
5075         nw64_ipp(IPP_DFIFO_WR3, data[3]);
5076         nw64_ipp(IPP_DFIFO_WR4, data[4]);
5077         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5078 }
5079
5080 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5081 {
5082         nw64_ipp(IPP_DFIFO_RD_PTR, index);
5083         data[0] = nr64_ipp(IPP_DFIFO_RD0);
5084         data[1] = nr64_ipp(IPP_DFIFO_RD1);
5085         data[2] = nr64_ipp(IPP_DFIFO_RD2);
5086         data[3] = nr64_ipp(IPP_DFIFO_RD3);
5087         data[4] = nr64_ipp(IPP_DFIFO_RD4);
5088 }
5089
5090 static int niu_ipp_reset(struct niu *np)
5091 {
5092         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5093                                           1000, 100, "IPP_CFIG");
5094 }
5095
5096 static int niu_init_ipp(struct niu *np)
5097 {
5098         u64 data[5], rbuf[5], val;
5099         int i, max, err;
5100
5101         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5102                 if (np->port == 0 || np->port == 1)
5103                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
5104                 else
5105                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
5106         } else
5107                 max = NIU_DFIFO_ENTRIES;
5108
5109         data[0] = 0;
5110         data[1] = 0;
5111         data[2] = 0;
5112         data[3] = 0;
5113         data[4] = 0;
5114
5115         for (i = 0; i < max; i++) {
5116                 niu_ipp_write(np, i, data);
5117                 niu_ipp_read(np, i, rbuf);
5118         }
5119
5120         (void) nr64_ipp(IPP_INT_STAT);
5121         (void) nr64_ipp(IPP_INT_STAT);
5122
5123         err = niu_ipp_reset(np);
5124         if (err)
5125                 return err;
5126
5127         (void) nr64_ipp(IPP_PKT_DIS);
5128         (void) nr64_ipp(IPP_BAD_CS_CNT);
5129         (void) nr64_ipp(IPP_ECC);
5130
5131         (void) nr64_ipp(IPP_INT_STAT);
5132
5133         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5134
5135         val = nr64_ipp(IPP_CFIG);
5136         val &= ~IPP_CFIG_IP_MAX_PKT;
5137         val |= (IPP_CFIG_IPP_ENABLE |
5138                 IPP_CFIG_DFIFO_ECC_EN |
5139                 IPP_CFIG_DROP_BAD_CRC |
5140                 IPP_CFIG_CKSUM_EN |
5141                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5142         nw64_ipp(IPP_CFIG, val);
5143
5144         return 0;
5145 }
5146
5147 static void niu_handle_led(struct niu *np, int status)
5148 {
5149         u64 val;
5150         val = nr64_mac(XMAC_CONFIG);
5151
5152         if ((np->flags & NIU_FLAGS_10G) != 0 &&
5153             (np->flags & NIU_FLAGS_FIBER) != 0) {
5154                 if (status) {
5155                         val |= XMAC_CONFIG_LED_POLARITY;
5156                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
5157                 } else {
5158                         val |= XMAC_CONFIG_FORCE_LED_ON;
5159                         val &= ~XMAC_CONFIG_LED_POLARITY;
5160                 }
5161         }
5162
5163         nw64_mac(XMAC_CONFIG, val);
5164 }
5165
5166 static void niu_init_xif_xmac(struct niu *np)
5167 {
5168         struct niu_link_config *lp = &np->link_config;
5169         u64 val;
5170
5171         if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5172                 val = nr64(MIF_CONFIG);
5173                 val |= MIF_CONFIG_ATCA_GE;
5174                 nw64(MIF_CONFIG, val);
5175         }
5176
5177         val = nr64_mac(XMAC_CONFIG);
5178         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5179
5180         val |= XMAC_CONFIG_TX_OUTPUT_EN;
5181
5182         if (lp->loopback_mode == LOOPBACK_MAC) {
5183                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5184                 val |= XMAC_CONFIG_LOOPBACK;
5185         } else {
5186                 val &= ~XMAC_CONFIG_LOOPBACK;
5187         }
5188
5189         if (np->flags & NIU_FLAGS_10G) {
5190                 val &= ~XMAC_CONFIG_LFS_DISABLE;
5191         } else {
5192                 val |= XMAC_CONFIG_LFS_DISABLE;
5193                 if (!(np->flags & NIU_FLAGS_FIBER) &&
5194                     !(np->flags & NIU_FLAGS_XCVR_SERDES))
5195                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
5196                 else
5197                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5198         }
5199
5200         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5201
5202         if (lp->active_speed == SPEED_100)
5203                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5204         else
5205                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5206
5207         nw64_mac(XMAC_CONFIG, val);
5208
5209         val = nr64_mac(XMAC_CONFIG);
5210         val &= ~XMAC_CONFIG_MODE_MASK;
5211         if (np->flags & NIU_FLAGS_10G) {
5212                 val |= XMAC_CONFIG_MODE_XGMII;
5213         } else {
5214                 if (lp->active_speed == SPEED_100)
5215                         val |= XMAC_CONFIG_MODE_MII;
5216                 else
5217                         val |= XMAC_CONFIG_MODE_GMII;
5218         }
5219
5220         nw64_mac(XMAC_CONFIG, val);
5221 }
5222
5223 static void niu_init_xif_bmac(struct niu *np)
5224 {
5225         struct niu_link_config *lp = &np->link_config;
5226         u64 val;
5227
5228         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5229
5230         if (lp->loopback_mode == LOOPBACK_MAC)
5231                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5232         else
5233                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5234
5235         if (lp->active_speed == SPEED_1000)
5236                 val |= BMAC_XIF_CONFIG_GMII_MODE;
5237         else
5238                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5239
5240         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5241                  BMAC_XIF_CONFIG_LED_POLARITY);
5242
5243         if (!(np->flags & NIU_FLAGS_10G) &&
5244             !(np->flags & NIU_FLAGS_FIBER) &&
5245             lp->active_speed == SPEED_100)
5246                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5247         else
5248                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5249
5250         nw64_mac(BMAC_XIF_CONFIG, val);
5251 }
5252
5253 static void niu_init_xif(struct niu *np)
5254 {
5255         if (np->flags & NIU_FLAGS_XMAC)
5256                 niu_init_xif_xmac(np);
5257         else
5258                 niu_init_xif_bmac(np);
5259 }
5260
5261 static void niu_pcs_mii_reset(struct niu *np)
5262 {
5263         int limit = 1000;
5264         u64 val = nr64_pcs(PCS_MII_CTL);
5265         val |= PCS_MII_CTL_RST;
5266         nw64_pcs(PCS_MII_CTL, val);
5267         while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5268                 udelay(100);
5269                 val = nr64_pcs(PCS_MII_CTL);
5270         }
5271 }
5272
5273 static void niu_xpcs_reset(struct niu *np)
5274 {
5275         int limit = 1000;
5276         u64 val = nr64_xpcs(XPCS_CONTROL1);
5277         val |= XPCS_CONTROL1_RESET;
5278         nw64_xpcs(XPCS_CONTROL1, val);
5279         while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5280                 udelay(100);
5281                 val = nr64_xpcs(XPCS_CONTROL1);
5282         }
5283 }
5284
5285 static int niu_init_pcs(struct niu *np)
5286 {
5287         struct niu_link_config *lp = &np->link_config;
5288         u64 val;
5289
5290         switch (np->flags & (NIU_FLAGS_10G |
5291                              NIU_FLAGS_FIBER |
5292                              NIU_FLAGS_XCVR_SERDES)) {
5293         case NIU_FLAGS_FIBER:
5294                 /* 1G fiber */
5295                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5296                 nw64_pcs(PCS_DPATH_MODE, 0);
5297                 niu_pcs_mii_reset(np);
5298                 break;
5299
5300         case NIU_FLAGS_10G:
5301         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5302         case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5303                 /* 10G SERDES */
5304                 if (!(np->flags & NIU_FLAGS_XMAC))
5305                         return -EINVAL;
5306
5307                 /* 10G copper or fiber */
5308                 val = nr64_mac(XMAC_CONFIG);
5309                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5310                 nw64_mac(XMAC_CONFIG, val);
5311
5312                 niu_xpcs_reset(np);
5313
5314                 val = nr64_xpcs(XPCS_CONTROL1);
5315                 if (lp->loopback_mode == LOOPBACK_PHY)
5316                         val |= XPCS_CONTROL1_LOOPBACK;
5317                 else
5318                         val &= ~XPCS_CONTROL1_LOOPBACK;
5319                 nw64_xpcs(XPCS_CONTROL1, val);
5320
5321                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5322                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5323                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5324                 break;
5325
5326
5327         case NIU_FLAGS_XCVR_SERDES:
5328                 /* 1G SERDES */
5329                 niu_pcs_mii_reset(np);
5330                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5331                 nw64_pcs(PCS_DPATH_MODE, 0);
5332                 break;
5333
5334         case 0:
5335                 /* 1G copper */
5336         case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5337                 /* 1G RGMII FIBER */
5338                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5339                 niu_pcs_mii_reset(np);
5340                 break;
5341
5342         default:
5343                 return -EINVAL;
5344         }
5345
5346         return 0;
5347 }
5348
5349 static int niu_reset_tx_xmac(struct niu *np)
5350 {
5351         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5352                                           (XTXMAC_SW_RST_REG_RS |
5353                                            XTXMAC_SW_RST_SOFT_RST),
5354                                           1000, 100, "XTXMAC_SW_RST");
5355 }
5356
5357 static int niu_reset_tx_bmac(struct niu *np)
5358 {
5359         int limit;
5360
5361         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5362         limit = 1000;
5363         while (--limit >= 0) {
5364                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5365                         break;
5366                 udelay(100);
5367         }
5368         if (limit < 0) {
5369                 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
5370                         "BTXMAC_SW_RST[%llx]\n",
5371                         np->port,
5372                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5373                 return -ENODEV;
5374         }
5375
5376         return 0;
5377 }
5378
5379 static int niu_reset_tx_mac(struct niu *np)
5380 {
5381         if (np->flags & NIU_FLAGS_XMAC)
5382                 return niu_reset_tx_xmac(np);
5383         else
5384                 return niu_reset_tx_bmac(np);
5385 }
5386
5387 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5388 {
5389         u64 val;
5390
5391         val = nr64_mac(XMAC_MIN);
5392         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5393                  XMAC_MIN_RX_MIN_PKT_SIZE);
5394         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5395         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5396         nw64_mac(XMAC_MIN, val);
5397
5398         nw64_mac(XMAC_MAX, max);
5399
5400         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5401
5402         val = nr64_mac(XMAC_IPG);
5403         if (np->flags & NIU_FLAGS_10G) {
5404                 val &= ~XMAC_IPG_IPG_XGMII;
5405                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5406         } else {
5407                 val &= ~XMAC_IPG_IPG_MII_GMII;
5408                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5409         }
5410         nw64_mac(XMAC_IPG, val);
5411
5412         val = nr64_mac(XMAC_CONFIG);
5413         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5414                  XMAC_CONFIG_STRETCH_MODE |
5415                  XMAC_CONFIG_VAR_MIN_IPG_EN |
5416                  XMAC_CONFIG_TX_ENABLE);
5417         nw64_mac(XMAC_CONFIG, val);
5418
5419         nw64_mac(TXMAC_FRM_CNT, 0);
5420         nw64_mac(TXMAC_BYTE_CNT, 0);
5421 }
5422
5423 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5424 {
5425         u64 val;
5426
5427         nw64_mac(BMAC_MIN_FRAME, min);
5428         nw64_mac(BMAC_MAX_FRAME, max);
5429
5430         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5431         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5432         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5433
5434         val = nr64_mac(BTXMAC_CONFIG);
5435         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5436                  BTXMAC_CONFIG_ENABLE);
5437         nw64_mac(BTXMAC_CONFIG, val);
5438 }
5439
5440 static void niu_init_tx_mac(struct niu *np)
5441 {
5442         u64 min, max;
5443
5444         min = 64;
5445         if (np->dev->mtu > ETH_DATA_LEN)
5446                 max = 9216;
5447         else
5448                 max = 1522;
5449
5450         /* The XMAC_MIN register only accepts values for TX min which
5451          * have the low 3 bits cleared.
5452          */
5453         BUILD_BUG_ON(min & 0x7);
5454
5455         if (np->flags & NIU_FLAGS_XMAC)
5456                 niu_init_tx_xmac(np, min, max);
5457         else
5458                 niu_init_tx_bmac(np, min, max);
5459 }
5460
5461 static int niu_reset_rx_xmac(struct niu *np)
5462 {
5463         int limit;
5464
5465         nw64_mac(XRXMAC_SW_RST,
5466                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5467         limit = 1000;
5468         while (--limit >= 0) {
5469                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5470                                                  XRXMAC_SW_RST_SOFT_RST)))
5471                     break;
5472                 udelay(100);
5473         }
5474         if (limit < 0) {
5475                 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
5476                         "XRXMAC_SW_RST[%llx]\n",
5477                         np->port,
5478                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5479                 return -ENODEV;
5480         }
5481
5482         return 0;
5483 }
5484
5485 static int niu_reset_rx_bmac(struct niu *np)
5486 {
5487         int limit;
5488
5489         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5490         limit = 1000;
5491         while (--limit >= 0) {
5492                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5493                         break;
5494                 udelay(100);
5495         }
5496         if (limit < 0) {
5497                 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
5498                         "BRXMAC_SW_RST[%llx]\n",
5499                         np->port,
5500                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5501                 return -ENODEV;
5502         }
5503
5504         return 0;
5505 }
5506
5507 static int niu_reset_rx_mac(struct niu *np)
5508 {
5509         if (np->flags & NIU_FLAGS_XMAC)
5510                 return niu_reset_rx_xmac(np);
5511         else
5512                 return niu_reset_rx_bmac(np);
5513 }
5514
5515 static void niu_init_rx_xmac(struct niu *np)
5516 {
5517         struct niu_parent *parent = np->parent;
5518         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5519         int first_rdc_table = tp->first_table_num;
5520         unsigned long i;
5521         u64 val;
5522
5523         nw64_mac(XMAC_ADD_FILT0, 0);
5524         nw64_mac(XMAC_ADD_FILT1, 0);
5525         nw64_mac(XMAC_ADD_FILT2, 0);
5526         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5527         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5528         for (i = 0; i < MAC_NUM_HASH; i++)
5529                 nw64_mac(XMAC_HASH_TBL(i), 0);
5530         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5531         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5532         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5533
5534         val = nr64_mac(XMAC_CONFIG);
5535         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5536                  XMAC_CONFIG_PROMISCUOUS |
5537                  XMAC_CONFIG_PROMISC_GROUP |
5538                  XMAC_CONFIG_ERR_CHK_DIS |
5539                  XMAC_CONFIG_RX_CRC_CHK_DIS |
5540                  XMAC_CONFIG_RESERVED_MULTICAST |
5541                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
5542                  XMAC_CONFIG_ADDR_FILTER_EN |
5543                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
5544                  XMAC_CONFIG_STRIP_CRC |
5545                  XMAC_CONFIG_PASS_FLOW_CTRL |
5546                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5547         val |= (XMAC_CONFIG_HASH_FILTER_EN);
5548         nw64_mac(XMAC_CONFIG, val);
5549
5550         nw64_mac(RXMAC_BT_CNT, 0);
5551         nw64_mac(RXMAC_BC_FRM_CNT, 0);
5552         nw64_mac(RXMAC_MC_FRM_CNT, 0);
5553         nw64_mac(RXMAC_FRAG_CNT, 0);
5554         nw64_mac(RXMAC_HIST_CNT1, 0);
5555         nw64_mac(RXMAC_HIST_CNT2, 0);
5556         nw64_mac(RXMAC_HIST_CNT3, 0);
5557         nw64_mac(RXMAC_HIST_CNT4, 0);
5558         nw64_mac(RXMAC_HIST_CNT5, 0);
5559         nw64_mac(RXMAC_HIST_CNT6, 0);
5560         nw64_mac(RXMAC_HIST_CNT7, 0);
5561         nw64_mac(RXMAC_MPSZER_CNT, 0);
5562         nw64_mac(RXMAC_CRC_ER_CNT, 0);
5563         nw64_mac(RXMAC_CD_VIO_CNT, 0);
5564         nw64_mac(LINK_FAULT_CNT, 0);
5565 }
5566
5567 static void niu_init_rx_bmac(struct niu *np)
5568 {
5569         struct niu_parent *parent = np->parent;
5570         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5571         int first_rdc_table = tp->first_table_num;
5572         unsigned long i;
5573         u64 val;
5574
5575         nw64_mac(BMAC_ADD_FILT0, 0);
5576         nw64_mac(BMAC_ADD_FILT1, 0);
5577         nw64_mac(BMAC_ADD_FILT2, 0);
5578         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5579         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5580         for (i = 0; i < MAC_NUM_HASH; i++)
5581                 nw64_mac(BMAC_HASH_TBL(i), 0);
5582         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5583         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5584         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5585
5586         val = nr64_mac(BRXMAC_CONFIG);
5587         val &= ~(BRXMAC_CONFIG_ENABLE |
5588                  BRXMAC_CONFIG_STRIP_PAD |
5589                  BRXMAC_CONFIG_STRIP_FCS |
5590                  BRXMAC_CONFIG_PROMISC |
5591                  BRXMAC_CONFIG_PROMISC_GRP |
5592                  BRXMAC_CONFIG_ADDR_FILT_EN |
5593                  BRXMAC_CONFIG_DISCARD_DIS);
5594         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5595         nw64_mac(BRXMAC_CONFIG, val);
5596
5597         val = nr64_mac(BMAC_ADDR_CMPEN);
5598         val |= BMAC_ADDR_CMPEN_EN0;
5599         nw64_mac(BMAC_ADDR_CMPEN, val);
5600 }
5601
5602 static void niu_init_rx_mac(struct niu *np)
5603 {
5604         niu_set_primary_mac(np, np->dev->dev_addr);
5605
5606         if (np->flags & NIU_FLAGS_XMAC)
5607                 niu_init_rx_xmac(np);
5608         else
5609                 niu_init_rx_bmac(np);
5610 }
5611
5612 static void niu_enable_tx_xmac(struct niu *np, int on)
5613 {
5614         u64 val = nr64_mac(XMAC_CONFIG);
5615
5616         if (on)
5617                 val |= XMAC_CONFIG_TX_ENABLE;
5618         else
5619                 val &= ~XMAC_CONFIG_TX_ENABLE;
5620         nw64_mac(XMAC_CONFIG, val);
5621 }
5622
5623 static void niu_enable_tx_bmac(struct niu *np, int on)
5624 {
5625         u64 val = nr64_mac(BTXMAC_CONFIG);
5626
5627         if (on)
5628                 val |= BTXMAC_CONFIG_ENABLE;
5629         else
5630                 val &= ~BTXMAC_CONFIG_ENABLE;
5631         nw64_mac(BTXMAC_CONFIG, val);
5632 }
5633
5634 static void niu_enable_tx_mac(struct niu *np, int on)
5635 {
5636         if (np->flags & NIU_FLAGS_XMAC)
5637                 niu_enable_tx_xmac(np, on);
5638         else
5639                 niu_enable_tx_bmac(np, on);
5640 }
5641
5642 static void niu_enable_rx_xmac(struct niu *np, int on)
5643 {
5644         u64 val = nr64_mac(XMAC_CONFIG);
5645
5646         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5647                  XMAC_CONFIG_PROMISCUOUS);
5648
5649         if (np->flags & NIU_FLAGS_MCAST)
5650                 val |= XMAC_CONFIG_HASH_FILTER_EN;
5651         if (np->flags & NIU_FLAGS_PROMISC)
5652                 val |= XMAC_CONFIG_PROMISCUOUS;
5653
5654         if (on)
5655                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5656         else
5657                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5658         nw64_mac(XMAC_CONFIG, val);
5659 }
5660
5661 static void niu_enable_rx_bmac(struct niu *np, int on)
5662 {
5663         u64 val = nr64_mac(BRXMAC_CONFIG);
5664
5665         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5666                  BRXMAC_CONFIG_PROMISC);
5667
5668         if (np->flags & NIU_FLAGS_MCAST)
5669                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5670         if (np->flags & NIU_FLAGS_PROMISC)
5671                 val |= BRXMAC_CONFIG_PROMISC;
5672
5673         if (on)
5674                 val |= BRXMAC_CONFIG_ENABLE;
5675         else
5676                 val &= ~BRXMAC_CONFIG_ENABLE;
5677         nw64_mac(BRXMAC_CONFIG, val);
5678 }
5679
5680 static void niu_enable_rx_mac(struct niu *np, int on)
5681 {
5682         if (np->flags & NIU_FLAGS_XMAC)
5683                 niu_enable_rx_xmac(np, on);
5684         else
5685                 niu_enable_rx_bmac(np, on);
5686 }
5687
5688 static int niu_init_mac(struct niu *np)
5689 {
5690         int err;
5691
5692         niu_init_xif(np);
5693         err = niu_init_pcs(np);
5694         if (err)
5695                 return err;
5696
5697         err = niu_reset_tx_mac(np);
5698         if (err)
5699                 return err;
5700         niu_init_tx_mac(np);
5701         err = niu_reset_rx_mac(np);
5702         if (err)
5703                 return err;
5704         niu_init_rx_mac(np);
5705
5706         /* This looks hookey but the RX MAC reset we just did will
5707          * undo some of the state we setup in niu_init_tx_mac() so we
5708          * have to call it again.  In particular, the RX MAC reset will
5709          * set the XMAC_MAX register back to it's default value.
5710          */
5711         niu_init_tx_mac(np);
5712         niu_enable_tx_mac(np, 1);
5713
5714         niu_enable_rx_mac(np, 1);
5715
5716         return 0;
5717 }
5718
5719 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5720 {
5721         (void) niu_tx_channel_stop(np, rp->tx_channel);
5722 }
5723
5724 static void niu_stop_tx_channels(struct niu *np)
5725 {
5726         int i;
5727
5728         for (i = 0; i < np->num_tx_rings; i++) {
5729                 struct tx_ring_info *rp = &np->tx_rings[i];
5730
5731                 niu_stop_one_tx_channel(np, rp);
5732         }
5733 }
5734
5735 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5736 {
5737         (void) niu_tx_channel_reset(np, rp->tx_channel);
5738 }
5739
5740 static void niu_reset_tx_channels(struct niu *np)
5741 {
5742         int i;
5743
5744         for (i = 0; i < np->num_tx_rings; i++) {
5745                 struct tx_ring_info *rp = &np->tx_rings[i];
5746
5747                 niu_reset_one_tx_channel(np, rp);
5748         }
5749 }
5750
5751 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5752 {
5753         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5754 }
5755
5756 static void niu_stop_rx_channels(struct niu *np)
5757 {
5758         int i;
5759
5760         for (i = 0; i < np->num_rx_rings; i++) {
5761                 struct rx_ring_info *rp = &np->rx_rings[i];
5762
5763                 niu_stop_one_rx_channel(np, rp);
5764         }
5765 }
5766
5767 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5768 {
5769         int channel = rp->rx_channel;
5770
5771         (void) niu_rx_channel_reset(np, channel);
5772         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5773         nw64(RX_DMA_CTL_STAT(channel), 0);
5774         (void) niu_enable_rx_channel(np, channel, 0);
5775 }
5776
5777 static void niu_reset_rx_channels(struct niu *np)
5778 {
5779         int i;
5780
5781         for (i = 0; i < np->num_rx_rings; i++) {
5782                 struct rx_ring_info *rp = &np->rx_rings[i];
5783
5784                 niu_reset_one_rx_channel(np, rp);
5785         }
5786 }
5787
5788 static void niu_disable_ipp(struct niu *np)
5789 {
5790         u64 rd, wr, val;
5791         int limit;
5792
5793         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5794         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5795         limit = 100;
5796         while (--limit >= 0 && (rd != wr)) {
5797                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5798                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5799         }
5800         if (limit < 0 &&
5801             (rd != 0 && wr != 1)) {
5802                 dev_err(np->device, PFX "%s: IPP would not quiesce, "
5803                         "rd_ptr[%llx] wr_ptr[%llx]\n",
5804                         np->dev->name,
5805                         (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
5806                         (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
5807         }
5808
5809         val = nr64_ipp(IPP_CFIG);
5810         val &= ~(IPP_CFIG_IPP_ENABLE |
5811                  IPP_CFIG_DFIFO_ECC_EN |
5812                  IPP_CFIG_DROP_BAD_CRC |
5813                  IPP_CFIG_CKSUM_EN);
5814         nw64_ipp(IPP_CFIG, val);
5815
5816         (void) niu_ipp_reset(np);
5817 }
5818
5819 static int niu_init_hw(struct niu *np)
5820 {
5821         int i, err;
5822
5823         niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
5824         niu_txc_enable_port(np, 1);
5825         niu_txc_port_dma_enable(np, 1);
5826         niu_txc_set_imask(np, 0);
5827
5828         niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
5829         for (i = 0; i < np->num_tx_rings; i++) {
5830                 struct tx_ring_info *rp = &np->tx_rings[i];
5831
5832                 err = niu_init_one_tx_channel(np, rp);
5833                 if (err)
5834                         return err;
5835         }
5836
5837         niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
5838         err = niu_init_rx_channels(np);
5839         if (err)
5840                 goto out_uninit_tx_channels;
5841
5842         niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
5843         err = niu_init_classifier_hw(np);
5844         if (err)
5845                 goto out_uninit_rx_channels;
5846
5847         niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
5848         err = niu_init_zcp(np);
5849         if (err)
5850                 goto out_uninit_rx_channels;
5851
5852         niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
5853         err = niu_init_ipp(np);
5854         if (err)
5855                 goto out_uninit_rx_channels;
5856
5857         niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
5858         err = niu_init_mac(np);
5859         if (err)
5860                 goto out_uninit_ipp;
5861
5862         return 0;
5863
5864 out_uninit_ipp:
5865         niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
5866         niu_disable_ipp(np);
5867
5868 out_uninit_rx_channels:
5869         niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
5870         niu_stop_rx_channels(np);
5871         niu_reset_rx_channels(np);
5872
5873 out_uninit_tx_channels:
5874         niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
5875         niu_stop_tx_channels(np);
5876         niu_reset_tx_channels(np);
5877
5878         return err;
5879 }
5880
5881 static void niu_stop_hw(struct niu *np)
5882 {
5883         niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
5884         niu_enable_interrupts(np, 0);
5885
5886         niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
5887         niu_enable_rx_mac(np, 0);
5888
5889         niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
5890         niu_disable_ipp(np);
5891
5892         niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
5893         niu_stop_tx_channels(np);
5894
5895         niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
5896         niu_stop_rx_channels(np);
5897
5898         niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
5899         niu_reset_tx_channels(np);
5900
5901         niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
5902         niu_reset_rx_channels(np);
5903 }
5904
5905 static void niu_set_irq_name(struct niu *np)
5906 {
5907         int port = np->port;
5908         int i, j = 1;
5909
5910         sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
5911
5912         if (port == 0) {
5913                 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
5914                 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
5915                 j = 3;
5916         }
5917
5918         for (i = 0; i < np->num_ldg - j; i++) {
5919                 if (i < np->num_rx_rings)
5920                         sprintf(np->irq_name[i+j], "%s-rx-%d",
5921                                 np->dev->name, i);
5922                 else if (i < np->num_tx_rings + np->num_rx_rings)
5923                         sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
5924                                 i - np->num_rx_rings);
5925         }
5926 }
5927
5928 static int niu_request_irq(struct niu *np)
5929 {
5930         int i, j, err;
5931
5932         niu_set_irq_name(np);
5933
5934         err = 0;
5935         for (i = 0; i < np->num_ldg; i++) {
5936                 struct niu_ldg *lp = &np->ldg[i];
5937
5938                 err = request_irq(lp->irq, niu_interrupt,
5939                                   IRQF_SHARED | IRQF_SAMPLE_RANDOM,
5940                                   np->irq_name[i], lp);
5941                 if (err)
5942                         goto out_free_irqs;
5943
5944         }
5945
5946         return 0;
5947
5948 out_free_irqs:
5949         for (j = 0; j < i; j++) {
5950                 struct niu_ldg *lp = &np->ldg[j];
5951
5952                 free_irq(lp->irq, lp);
5953         }
5954         return err;
5955 }
5956
5957 static void niu_free_irq(struct niu *np)
5958 {
5959         int i;
5960
5961         for (i = 0; i < np->num_ldg; i++) {
5962                 struct niu_ldg *lp = &np->ldg[i];
5963
5964                 free_irq(lp->irq, lp);
5965         }
5966 }
5967
5968 static void niu_enable_napi(struct niu *np)
5969 {
5970         int i;
5971
5972         for (i = 0; i < np->num_ldg; i++)
5973                 napi_enable(&np->ldg[i].napi);
5974 }
5975
5976 static void niu_disable_napi(struct niu *np)
5977 {
5978         int i;
5979
5980         for (i = 0; i < np->num_ldg; i++)
5981                 napi_disable(&np->ldg[i].napi);
5982 }
5983
5984 static int niu_open(struct net_device *dev)
5985 {
5986         struct niu *np = netdev_priv(dev);
5987         int err;
5988
5989         netif_carrier_off(dev);
5990
5991         err = niu_alloc_channels(np);
5992         if (err)
5993                 goto out_err;
5994
5995         err = niu_enable_interrupts(np, 0);
5996         if (err)
5997                 goto out_free_channels;
5998
5999         err = niu_request_irq(np);
6000         if (err)
6001                 goto out_free_channels;
6002
6003         niu_enable_napi(np);
6004
6005         spin_lock_irq(&np->lock);
6006
6007         err = niu_init_hw(np);
6008         if (!err) {
6009                 init_timer(&np->timer);
6010                 np->timer.expires = jiffies + HZ;
6011                 np->timer.data = (unsigned long) np;
6012                 np->timer.function = niu_timer;
6013
6014                 err = niu_enable_interrupts(np, 1);
6015                 if (err)
6016                         niu_stop_hw(np);
6017         }
6018
6019         spin_unlock_irq(&np->lock);
6020
6021         if (err) {
6022                 niu_disable_napi(np);
6023                 goto out_free_irq;
6024         }
6025
6026         netif_tx_start_all_queues(dev);
6027
6028         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6029                 netif_carrier_on(dev);
6030
6031         add_timer(&np->timer);
6032
6033         return 0;
6034
6035 out_free_irq:
6036         niu_free_irq(np);
6037
6038 out_free_channels:
6039         niu_free_channels(np);
6040
6041 out_err:
6042         return err;
6043 }
6044
6045 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6046 {
6047         cancel_work_sync(&np->reset_task);
6048
6049         niu_disable_napi(np);
6050         netif_tx_stop_all_queues(dev);
6051
6052         del_timer_sync(&np->timer);
6053
6054         spin_lock_irq(&np->lock);
6055
6056         niu_stop_hw(np);
6057
6058         spin_unlock_irq(&np->lock);
6059 }
6060
6061 static int niu_close(struct net_device *dev)
6062 {
6063         struct niu *np = netdev_priv(dev);
6064
6065         niu_full_shutdown(np, dev);
6066
6067         niu_free_irq(np);
6068
6069         niu_free_channels(np);
6070
6071         niu_handle_led(np, 0);
6072
6073         return 0;
6074 }
6075
6076 static void niu_sync_xmac_stats(struct niu *np)
6077 {
6078         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6079
6080         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6081         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6082
6083         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6084         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6085         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6086         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6087         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6088         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6089         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6090         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6091         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6092         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6093         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6094         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6095         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6096         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6097         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6098         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6099 }
6100
6101 static void niu_sync_bmac_stats(struct niu *np)
6102 {
6103         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6104
6105         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6106         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6107
6108         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6109         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6110         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6111         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6112 }
6113
6114 static void niu_sync_mac_stats(struct niu *np)
6115 {
6116         if (np->flags & NIU_FLAGS_XMAC)
6117                 niu_sync_xmac_stats(np);
6118         else
6119                 niu_sync_bmac_stats(np);
6120 }
6121
6122 static void niu_get_rx_stats(struct niu *np)
6123 {
6124         unsigned long pkts, dropped, errors, bytes;
6125         int i;
6126
6127         pkts = dropped = errors = bytes = 0;
6128         for (i = 0; i < np->num_rx_rings; i++) {
6129                 struct rx_ring_info *rp = &np->rx_rings[i];
6130
6131                 niu_sync_rx_discard_stats(np, rp, 0);
6132
6133                 pkts += rp->rx_packets;
6134                 bytes += rp->rx_bytes;
6135                 dropped += rp->rx_dropped;
6136                 errors += rp->rx_errors;
6137         }
6138         np->dev->stats.rx_packets = pkts;
6139         np->dev->stats.rx_bytes = bytes;
6140         np->dev->stats.rx_dropped = dropped;
6141         np->dev->stats.rx_errors = errors;
6142 }
6143
6144 static void niu_get_tx_stats(struct niu *np)
6145 {
6146         unsigned long pkts, errors, bytes;
6147         int i;
6148
6149         pkts = errors = bytes = 0;
6150         for (i = 0; i < np->num_tx_rings; i++) {
6151                 struct tx_ring_info *rp = &np->tx_rings[i];
6152
6153                 pkts += rp->tx_packets;
6154                 bytes += rp->tx_bytes;
6155                 errors += rp->tx_errors;
6156         }
6157         np->dev->stats.tx_packets = pkts;
6158         np->dev->stats.tx_bytes = bytes;
6159         np->dev->stats.tx_errors = errors;
6160 }
6161
6162 static struct net_device_stats *niu_get_stats(struct net_device *dev)
6163 {
6164         struct niu *np = netdev_priv(dev);
6165
6166         niu_get_rx_stats(np);
6167         niu_get_tx_stats(np);
6168
6169         return &dev->stats;
6170 }
6171
6172 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6173 {
6174         int i;
6175
6176         for (i = 0; i < 16; i++)
6177                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6178 }
6179
6180 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6181 {
6182         int i;
6183
6184         for (i = 0; i < 16; i++)
6185                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6186 }
6187
6188 static void niu_load_hash(struct niu *np, u16 *hash)
6189 {
6190         if (np->flags & NIU_FLAGS_XMAC)
6191                 niu_load_hash_xmac(np, hash);
6192         else
6193                 niu_load_hash_bmac(np, hash);
6194 }
6195
6196 static void niu_set_rx_mode(struct net_device *dev)
6197 {
6198         struct niu *np = netdev_priv(dev);
6199         int i, alt_cnt, err;
6200         struct dev_addr_list *addr;
6201         unsigned long flags;
6202         u16 hash[16] = { 0, };
6203
6204         spin_lock_irqsave(&np->lock, flags);
6205         niu_enable_rx_mac(np, 0);
6206
6207         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6208         if (dev->flags & IFF_PROMISC)
6209                 np->flags |= NIU_FLAGS_PROMISC;
6210         if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
6211                 np->flags |= NIU_FLAGS_MCAST;
6212
6213         alt_cnt = dev->uc_count;
6214         if (alt_cnt > niu_num_alt_addr(np)) {
6215                 alt_cnt = 0;
6216                 np->flags |= NIU_FLAGS_PROMISC;
6217         }
6218
6219         if (alt_cnt) {
6220                 int index = 0;
6221
6222                 for (addr = dev->uc_list; addr; addr = addr->next) {
6223                         err = niu_set_alt_mac(np, index,
6224                                               addr->da_addr);
6225                         if (err)
6226                                 printk(KERN_WARNING PFX "%s: Error %d "
6227                                        "adding alt mac %d\n",
6228                                        dev->name, err, index);
6229                         err = niu_enable_alt_mac(np, index, 1);
6230                         if (err)
6231                                 printk(KERN_WARNING PFX "%s: Error %d "
6232                                        "enabling alt mac %d\n",
6233                                        dev->name, err, index);
6234
6235                         index++;
6236                 }
6237         } else {
6238                 int alt_start;
6239                 if (np->flags & NIU_FLAGS_XMAC)
6240                         alt_start = 0;
6241                 else
6242                         alt_start = 1;
6243                 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6244                         err = niu_enable_alt_mac(np, i, 0);
6245                         if (err)
6246                                 printk(KERN_WARNING PFX "%s: Error %d "
6247                                        "disabling alt mac %d\n",
6248                                        dev->name, err, i);
6249                 }
6250         }
6251         if (dev->flags & IFF_ALLMULTI) {
6252                 for (i = 0; i < 16; i++)
6253                         hash[i] = 0xffff;
6254         } else if (dev->mc_count > 0) {
6255                 for (addr = dev->mc_list; addr; addr = addr->next) {
6256                         u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
6257
6258                         crc >>= 24;
6259                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6260                 }
6261         }
6262
6263         if (np->flags & NIU_FLAGS_MCAST)
6264                 niu_load_hash(np, hash);
6265
6266         niu_enable_rx_mac(np, 1);
6267         spin_unlock_irqrestore(&np->lock, flags);
6268 }
6269
6270 static int niu_set_mac_addr(struct net_device *dev, void *p)
6271 {
6272         struct niu *np = netdev_priv(dev);
6273         struct sockaddr *addr = p;
6274         unsigned long flags;
6275
6276         if (!is_valid_ether_addr(addr->sa_data))
6277                 return -EINVAL;
6278
6279         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6280
6281         if (!netif_running(dev))
6282                 return 0;
6283
6284         spin_lock_irqsave(&np->lock, flags);
6285         niu_enable_rx_mac(np, 0);
6286         niu_set_primary_mac(np, dev->dev_addr);
6287         niu_enable_rx_mac(np, 1);
6288         spin_unlock_irqrestore(&np->lock, flags);
6289
6290         return 0;
6291 }
6292
6293 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6294 {
6295         return -EOPNOTSUPP;
6296 }
6297
6298 static void niu_netif_stop(struct niu *np)
6299 {
6300         np->dev->trans_start = jiffies; /* prevent tx timeout */
6301
6302         niu_disable_napi(np);
6303
6304         netif_tx_disable(np->dev);
6305 }
6306
6307 static void niu_netif_start(struct niu *np)
6308 {
6309         /* NOTE: unconditional netif_wake_queue is only appropriate
6310          * so long as all callers are assured to have free tx slots
6311          * (such as after niu_init_hw).
6312          */
6313         netif_tx_wake_all_queues(np->dev);
6314
6315         niu_enable_napi(np);
6316
6317         niu_enable_interrupts(np, 1);
6318 }
6319
6320 static void niu_reset_buffers(struct niu *np)
6321 {
6322         int i, j, k, err;
6323
6324         if (np->rx_rings) {
6325                 for (i = 0; i < np->num_rx_rings; i++) {
6326                         struct rx_ring_info *rp = &np->rx_rings[i];
6327
6328                         for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6329                                 struct page *page;
6330
6331                                 page = rp->rxhash[j];
6332                                 while (page) {
6333                                         struct page *next =
6334                                                 (struct page *) page->mapping;
6335                                         u64 base = page->index;
6336                                         base = base >> RBR_DESCR_ADDR_SHIFT;
6337                                         rp->rbr[k++] = cpu_to_le32(base);
6338                                         page = next;
6339                                 }
6340                         }
6341                         for (; k < MAX_RBR_RING_SIZE; k++) {
6342                                 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6343                                 if (unlikely(err))
6344                                         break;
6345                         }
6346
6347                         rp->rbr_index = rp->rbr_table_size - 1;
6348                         rp->rcr_index = 0;
6349                         rp->rbr_pending = 0;
6350                         rp->rbr_refill_pending = 0;
6351                 }
6352         }
6353         if (np->tx_rings) {
6354                 for (i = 0; i < np->num_tx_rings; i++) {
6355                         struct tx_ring_info *rp = &np->tx_rings[i];
6356
6357                         for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6358                                 if (rp->tx_buffs[j].skb)
6359                                         (void) release_tx_packet(np, rp, j);
6360                         }
6361
6362                         rp->pending = MAX_TX_RING_SIZE;
6363                         rp->prod = 0;
6364                         rp->cons = 0;
6365                         rp->wrap_bit = 0;
6366                 }
6367         }
6368 }
6369
6370 static void niu_reset_task(struct work_struct *work)
6371 {
6372         struct niu *np = container_of(work, struct niu, reset_task);
6373         unsigned long flags;
6374         int err;
6375
6376         spin_lock_irqsave(&np->lock, flags);
6377         if (!netif_running(np->dev)) {
6378                 spin_unlock_irqrestore(&np->lock, flags);
6379                 return;
6380         }
6381
6382         spin_unlock_irqrestore(&np->lock, flags);
6383
6384         del_timer_sync(&np->timer);
6385
6386         niu_netif_stop(np);
6387
6388         spin_lock_irqsave(&np->lock, flags);
6389
6390         niu_stop_hw(np);
6391
6392         spin_unlock_irqrestore(&np->lock, flags);
6393
6394         niu_reset_buffers(np);
6395
6396         spin_lock_irqsave(&np->lock, flags);
6397
6398         err = niu_init_hw(np);
6399         if (!err) {
6400                 np->timer.expires = jiffies + HZ;
6401                 add_timer(&np->timer);
6402                 niu_netif_start(np);
6403         }
6404
6405         spin_unlock_irqrestore(&np->lock, flags);
6406 }
6407
6408 static void niu_tx_timeout(struct net_device *dev)
6409 {
6410         struct niu *np = netdev_priv(dev);
6411
6412         dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
6413                 dev->name);
6414
6415         schedule_work(&np->reset_task);
6416 }
6417
6418 static void niu_set_txd(struct tx_ring_info *rp, int index,
6419                         u64 mapping, u64 len, u64 mark,
6420                         u64 n_frags)
6421 {
6422         __le64 *desc = &rp->descr[index];
6423
6424         *desc = cpu_to_le64(mark |
6425                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6426                             (len << TX_DESC_TR_LEN_SHIFT) |
6427                             (mapping & TX_DESC_SAD));
6428 }
6429
6430 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6431                                 u64 pad_bytes, u64 len)
6432 {
6433         u16 eth_proto, eth_proto_inner;
6434         u64 csum_bits, l3off, ihl, ret;
6435         u8 ip_proto;
6436         int ipv6;
6437
6438         eth_proto = be16_to_cpu(ehdr->h_proto);
6439         eth_proto_inner = eth_proto;
6440         if (eth_proto == ETH_P_8021Q) {
6441                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6442                 __be16 val = vp->h_vlan_encapsulated_proto;
6443
6444                 eth_proto_inner = be16_to_cpu(val);
6445         }
6446
6447         ipv6 = ihl = 0;
6448         switch (skb->protocol) {
6449         case __constant_htons(ETH_P_IP):
6450                 ip_proto = ip_hdr(skb)->protocol;
6451                 ihl = ip_hdr(skb)->ihl;
6452                 break;
6453         case __constant_htons(ETH_P_IPV6):
6454                 ip_proto = ipv6_hdr(skb)->nexthdr;
6455                 ihl = (40 >> 2);
6456                 ipv6 = 1;
6457                 break;
6458         default:
6459                 ip_proto = ihl = 0;
6460                 break;
6461         }
6462
6463         csum_bits = TXHDR_CSUM_NONE;
6464         if (skb->ip_summed == CHECKSUM_PARTIAL) {
6465                 u64 start, stuff;
6466
6467                 csum_bits = (ip_proto == IPPROTO_TCP ?
6468                              TXHDR_CSUM_TCP :
6469                              (ip_proto == IPPROTO_UDP ?
6470                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6471
6472                 start = skb_transport_offset(skb) -
6473                         (pad_bytes + sizeof(struct tx_pkt_hdr));
6474                 stuff = start + skb->csum_offset;
6475
6476                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6477                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6478         }
6479
6480         l3off = skb_network_offset(skb) -
6481                 (pad_bytes + sizeof(struct tx_pkt_hdr));
6482
6483         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6484                (len << TXHDR_LEN_SHIFT) |
6485                ((l3off / 2) << TXHDR_L3START_SHIFT) |
6486                (ihl << TXHDR_IHL_SHIFT) |
6487                ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6488                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6489                (ipv6 ? TXHDR_IP_VER : 0) |
6490                csum_bits);
6491
6492         return ret;
6493 }
6494
6495 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
6496 {
6497         struct niu *np = netdev_priv(dev);
6498         unsigned long align, headroom;
6499         struct netdev_queue *txq;
6500         struct tx_ring_info *rp;
6501         struct tx_pkt_hdr *tp;
6502         unsigned int len, nfg;
6503         struct ethhdr *ehdr;
6504         int prod, i, tlen;
6505         u64 mapping, mrk;
6506
6507         i = skb_get_queue_mapping(skb);
6508         rp = &np->tx_rings[i];
6509         txq = netdev_get_tx_queue(dev, i);
6510
6511         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6512                 netif_tx_stop_queue(txq);
6513                 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
6514                         "queue awake!\n", dev->name);
6515                 rp->tx_errors++;
6516                 return NETDEV_TX_BUSY;
6517         }
6518
6519         if (skb->len < ETH_ZLEN) {
6520                 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6521
6522                 if (skb_pad(skb, pad_bytes))
6523                         goto out;
6524                 skb_put(skb, pad_bytes);
6525         }
6526
6527         len = sizeof(struct tx_pkt_hdr) + 15;
6528         if (skb_headroom(skb) < len) {
6529                 struct sk_buff *skb_new;
6530
6531                 skb_new = skb_realloc_headroom(skb, len);
6532                 if (!skb_new) {
6533                         rp->tx_errors++;
6534                         goto out_drop;
6535                 }
6536                 kfree_skb(skb);
6537                 skb = skb_new;
6538         } else
6539                 skb_orphan(skb);
6540
6541         align = ((unsigned long) skb->data & (16 - 1));
6542         headroom = align + sizeof(struct tx_pkt_hdr);
6543
6544         ehdr = (struct ethhdr *) skb->data;
6545         tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6546
6547         len = skb->len - sizeof(struct tx_pkt_hdr);
6548         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6549         tp->resv = 0;
6550
6551         len = skb_headlen(skb);
6552         mapping = np->ops->map_single(np->device, skb->data,
6553                                       len, DMA_TO_DEVICE);
6554
6555         prod = rp->prod;
6556
6557         rp->tx_buffs[prod].skb = skb;
6558         rp->tx_buffs[prod].mapping = mapping;
6559
6560         mrk = TX_DESC_SOP;
6561         if (++rp->mark_counter == rp->mark_freq) {
6562                 rp->mark_counter = 0;
6563                 mrk |= TX_DESC_MARK;
6564                 rp->mark_pending++;
6565         }
6566
6567         tlen = len;
6568         nfg = skb_shinfo(skb)->nr_frags;
6569         while (tlen > 0) {
6570                 tlen -= MAX_TX_DESC_LEN;
6571                 nfg++;
6572         }
6573
6574         while (len > 0) {
6575                 unsigned int this_len = len;
6576
6577                 if (this_len > MAX_TX_DESC_LEN)
6578                         this_len = MAX_TX_DESC_LEN;
6579
6580                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6581                 mrk = nfg = 0;
6582
6583                 prod = NEXT_TX(rp, prod);
6584                 mapping += this_len;
6585                 len -= this_len;
6586         }
6587
6588         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
6589                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6590
6591                 len = frag->size;
6592                 mapping = np->ops->map_page(np->device, frag->page,
6593                                             frag->page_offset, len,
6594                                             DMA_TO_DEVICE);
6595
6596                 rp->tx_buffs[prod].skb = NULL;
6597                 rp->tx_buffs[prod].mapping = mapping;
6598
6599                 niu_set_txd(rp, prod, mapping, len, 0, 0);
6600
6601                 prod = NEXT_TX(rp, prod);
6602         }
6603
6604         if (prod < rp->prod)
6605                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6606         rp->prod = prod;
6607
6608         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6609
6610         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6611                 netif_tx_stop_queue(txq);
6612                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6613                         netif_tx_wake_queue(txq);
6614         }
6615
6616         dev->trans_start = jiffies;
6617
6618 out:
6619         return NETDEV_TX_OK;
6620
6621 out_drop:
6622         rp->tx_errors++;
6623         kfree_skb(skb);
6624         goto out;
6625 }
6626
6627 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6628 {
6629         struct niu *np = netdev_priv(dev);
6630         int err, orig_jumbo, new_jumbo;
6631
6632         if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6633                 return -EINVAL;
6634
6635         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6636         new_jumbo = (new_mtu > ETH_DATA_LEN);
6637
6638         dev->mtu = new_mtu;
6639
6640         if (!netif_running(dev) ||
6641             (orig_jumbo == new_jumbo))
6642                 return 0;
6643
6644         niu_full_shutdown(np, dev);
6645
6646         niu_free_channels(np);
6647
6648         niu_enable_napi(np);
6649
6650         err = niu_alloc_channels(np);
6651         if (err)
6652                 return err;
6653
6654         spin_lock_irq(&np->lock);
6655
6656         err = niu_init_hw(np);
6657         if (!err) {
6658                 init_timer(&np->timer);
6659                 np->timer.expires = jiffies + HZ;
6660                 np->timer.data = (unsigned long) np;
6661                 np->timer.function = niu_timer;
6662
6663                 err = niu_enable_interrupts(np, 1);
6664                 if (err)
6665                         niu_stop_hw(np);
6666         }
6667
6668         spin_unlock_irq(&np->lock);
6669
6670         if (!err) {
6671                 netif_tx_start_all_queues(dev);
6672                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6673                         netif_carrier_on(dev);
6674
6675                 add_timer(&np->timer);
6676         }
6677
6678         return err;
6679 }
6680
6681 static void niu_get_drvinfo(struct net_device *dev,
6682                             struct ethtool_drvinfo *info)
6683 {
6684         struct niu *np = netdev_priv(dev);
6685         struct niu_vpd *vpd = &np->vpd;
6686
6687         strcpy(info->driver, DRV_MODULE_NAME);
6688         strcpy(info->version, DRV_MODULE_VERSION);
6689         sprintf(info->fw_version, "%d.%d",
6690                 vpd->fcode_major, vpd->fcode_minor);
6691         if (np->parent->plat_type != PLAT_TYPE_NIU)
6692                 strcpy(info->bus_info, pci_name(np->pdev));
6693 }
6694
6695 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6696 {
6697         struct niu *np = netdev_priv(dev);
6698         struct niu_link_config *lp;
6699
6700         lp = &np->link_config;
6701
6702         memset(cmd, 0, sizeof(*cmd));
6703         cmd->phy_address = np->phy_addr;
6704         cmd->supported = lp->supported;
6705         cmd->advertising = lp->advertising;
6706         cmd->autoneg = lp->autoneg;
6707         cmd->speed = lp->active_speed;
6708         cmd->duplex = lp->active_duplex;
6709
6710         return 0;
6711 }
6712
6713 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6714 {
6715         return -EINVAL;
6716 }
6717
6718 static u32 niu_get_msglevel(struct net_device *dev)
6719 {
6720         struct niu *np = netdev_priv(dev);
6721         return np->msg_enable;
6722 }
6723
6724 static void niu_set_msglevel(struct net_device *dev, u32 value)
6725 {
6726         struct niu *np = netdev_priv(dev);
6727         np->msg_enable = value;
6728 }
6729
6730 static int niu_get_eeprom_len(struct net_device *dev)
6731 {
6732         struct niu *np = netdev_priv(dev);
6733
6734         return np->eeprom_len;
6735 }
6736
6737 static int niu_get_eeprom(struct net_device *dev,
6738                           struct ethtool_eeprom *eeprom, u8 *data)
6739 {
6740         struct niu *np = netdev_priv(dev);
6741         u32 offset, len, val;
6742
6743         offset = eeprom->offset;
6744         len = eeprom->len;
6745
6746         if (offset + len < offset)
6747                 return -EINVAL;
6748         if (offset >= np->eeprom_len)
6749                 return -EINVAL;
6750         if (offset + len > np->eeprom_len)
6751                 len = eeprom->len = np->eeprom_len - offset;
6752
6753         if (offset & 3) {
6754                 u32 b_offset, b_count;
6755
6756                 b_offset = offset & 3;
6757                 b_count = 4 - b_offset;
6758                 if (b_count > len)
6759                         b_count = len;
6760
6761                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6762                 memcpy(data, ((char *)&val) + b_offset, b_count);
6763                 data += b_count;
6764                 len -= b_count;
6765                 offset += b_count;
6766         }
6767         while (len >= 4) {
6768                 val = nr64(ESPC_NCR(offset / 4));
6769                 memcpy(data, &val, 4);
6770                 data += 4;
6771                 len -= 4;
6772                 offset += 4;
6773         }
6774         if (len) {
6775                 val = nr64(ESPC_NCR(offset / 4));
6776                 memcpy(data, &val, len);
6777         }
6778         return 0;
6779 }
6780
6781 static int niu_ethflow_to_class(int flow_type, u64 *class)
6782 {
6783         switch (flow_type) {
6784         case TCP_V4_FLOW:
6785                 *class = CLASS_CODE_TCP_IPV4;
6786                 break;
6787         case UDP_V4_FLOW:
6788                 *class = CLASS_CODE_UDP_IPV4;
6789                 break;
6790         case AH_ESP_V4_FLOW:
6791                 *class = CLASS_CODE_AH_ESP_IPV4;
6792                 break;
6793         case SCTP_V4_FLOW:
6794                 *class = CLASS_CODE_SCTP_IPV4;
6795                 break;
6796         case TCP_V6_FLOW:
6797                 *class = CLASS_CODE_TCP_IPV6;
6798                 break;
6799         case UDP_V6_FLOW:
6800                 *class = CLASS_CODE_UDP_IPV6;
6801                 break;
6802         case AH_ESP_V6_FLOW:
6803                 *class = CLASS_CODE_AH_ESP_IPV6;
6804                 break;
6805         case SCTP_V6_FLOW:
6806                 *class = CLASS_CODE_SCTP_IPV6;
6807                 break;
6808         default:
6809                 return 0;
6810         }
6811
6812         return 1;
6813 }
6814
6815 static u64 niu_flowkey_to_ethflow(u64 flow_key)
6816 {
6817         u64 ethflow = 0;
6818
6819         if (flow_key & FLOW_KEY_PORT)
6820                 ethflow |= RXH_DEV_PORT;
6821         if (flow_key & FLOW_KEY_L2DA)
6822                 ethflow |= RXH_L2DA;
6823         if (flow_key & FLOW_KEY_VLAN)
6824                 ethflow |= RXH_VLAN;
6825         if (flow_key & FLOW_KEY_IPSA)
6826                 ethflow |= RXH_IP_SRC;
6827         if (flow_key & FLOW_KEY_IPDA)
6828                 ethflow |= RXH_IP_DST;
6829         if (flow_key & FLOW_KEY_PROTO)
6830                 ethflow |= RXH_L3_PROTO;
6831         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
6832                 ethflow |= RXH_L4_B_0_1;
6833         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
6834                 ethflow |= RXH_L4_B_2_3;
6835
6836         return ethflow;
6837
6838 }
6839
6840 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
6841 {
6842         u64 key = 0;
6843
6844         if (ethflow & RXH_DEV_PORT)
6845                 key |= FLOW_KEY_PORT;
6846         if (ethflow & RXH_L2DA)
6847                 key |= FLOW_KEY_L2DA;
6848         if (ethflow & RXH_VLAN)
6849                 key |= FLOW_KEY_VLAN;
6850         if (ethflow & RXH_IP_SRC)
6851                 key |= FLOW_KEY_IPSA;
6852         if (ethflow & RXH_IP_DST)
6853                 key |= FLOW_KEY_IPDA;
6854         if (ethflow & RXH_L3_PROTO)
6855                 key |= FLOW_KEY_PROTO;
6856         if (ethflow & RXH_L4_B_0_1)
6857                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
6858         if (ethflow & RXH_L4_B_2_3)
6859                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
6860
6861         *flow_key = key;
6862
6863         return 1;
6864
6865 }
6866
6867 static int niu_get_hash_opts(struct net_device *dev, struct ethtool_rxnfc *cmd)
6868 {
6869         struct niu *np = netdev_priv(dev);
6870         u64 class;
6871
6872         cmd->data = 0;
6873
6874         if (!niu_ethflow_to_class(cmd->flow_type, &class))
6875                 return -EINVAL;
6876
6877         if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
6878             TCAM_KEY_DISC)
6879                 cmd->data = RXH_DISCARD;
6880         else
6881
6882                 cmd->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
6883                                                       CLASS_CODE_USER_PROG1]);
6884         return 0;
6885 }
6886
6887 static int niu_set_hash_opts(struct net_device *dev, struct ethtool_rxnfc *cmd)
6888 {
6889         struct niu *np = netdev_priv(dev);
6890         u64 class;
6891         u64 flow_key = 0;
6892         unsigned long flags;
6893
6894         if (!niu_ethflow_to_class(cmd->flow_type, &class))
6895                 return -EINVAL;
6896
6897         if (class < CLASS_CODE_USER_PROG1 ||
6898             class > CLASS_CODE_SCTP_IPV6)
6899                 return -EINVAL;
6900
6901         if (cmd->data & RXH_DISCARD) {
6902                 niu_lock_parent(np, flags);
6903                 flow_key = np->parent->tcam_key[class -
6904                                                CLASS_CODE_USER_PROG1];
6905                 flow_key |= TCAM_KEY_DISC;
6906                 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
6907                 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
6908                 niu_unlock_parent(np, flags);
6909                 return 0;
6910         } else {
6911                 /* Discard was set before, but is not set now */
6912                 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
6913                     TCAM_KEY_DISC) {
6914                         niu_lock_parent(np, flags);
6915                         flow_key = np->parent->tcam_key[class -
6916                                                CLASS_CODE_USER_PROG1];
6917                         flow_key &= ~TCAM_KEY_DISC;
6918                         nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
6919                              flow_key);
6920                         np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
6921                                 flow_key;
6922                         niu_unlock_parent(np, flags);
6923                 }
6924         }
6925
6926         if (!niu_ethflow_to_flowkey(cmd->data, &flow_key))
6927                 return -EINVAL;
6928
6929         niu_lock_parent(np, flags);
6930         nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
6931         np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
6932         niu_unlock_parent(np, flags);
6933
6934         return 0;
6935 }
6936
6937 static const struct {
6938         const char string[ETH_GSTRING_LEN];
6939 } niu_xmac_stat_keys[] = {
6940         { "tx_frames" },
6941         { "tx_bytes" },
6942         { "tx_fifo_errors" },
6943         { "tx_overflow_errors" },
6944         { "tx_max_pkt_size_errors" },
6945         { "tx_underflow_errors" },
6946         { "rx_local_faults" },
6947         { "rx_remote_faults" },
6948         { "rx_link_faults" },
6949         { "rx_align_errors" },
6950         { "rx_frags" },
6951         { "rx_mcasts" },
6952         { "rx_bcasts" },
6953         { "rx_hist_cnt1" },
6954         { "rx_hist_cnt2" },
6955         { "rx_hist_cnt3" },
6956         { "rx_hist_cnt4" },
6957         { "rx_hist_cnt5" },
6958         { "rx_hist_cnt6" },
6959         { "rx_hist_cnt7" },
6960         { "rx_octets" },
6961         { "rx_code_violations" },
6962         { "rx_len_errors" },
6963         { "rx_crc_errors" },
6964         { "rx_underflows" },
6965         { "rx_overflows" },
6966         { "pause_off_state" },
6967         { "pause_on_state" },
6968         { "pause_received" },
6969 };
6970
6971 #define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
6972
6973 static const struct {
6974         const char string[ETH_GSTRING_LEN];
6975 } niu_bmac_stat_keys[] = {
6976         { "tx_underflow_errors" },
6977         { "tx_max_pkt_size_errors" },
6978         { "tx_bytes" },
6979         { "tx_frames" },
6980         { "rx_overflows" },
6981         { "rx_frames" },
6982         { "rx_align_errors" },
6983         { "rx_crc_errors" },
6984         { "rx_len_errors" },
6985         { "pause_off_state" },
6986         { "pause_on_state" },
6987         { "pause_received" },
6988 };
6989
6990 #define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
6991
6992 static const struct {
6993         const char string[ETH_GSTRING_LEN];
6994 } niu_rxchan_stat_keys[] = {
6995         { "rx_channel" },
6996         { "rx_packets" },
6997         { "rx_bytes" },
6998         { "rx_dropped" },
6999         { "rx_errors" },
7000 };
7001
7002 #define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
7003
7004 static const struct {
7005         const char string[ETH_GSTRING_LEN];
7006 } niu_txchan_stat_keys[] = {
7007         { "tx_channel" },
7008         { "tx_packets" },
7009         { "tx_bytes" },
7010         { "tx_errors" },
7011 };
7012
7013 #define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
7014
7015 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7016 {
7017         struct niu *np = netdev_priv(dev);
7018         int i;
7019
7020         if (stringset != ETH_SS_STATS)
7021                 return;
7022
7023         if (np->flags & NIU_FLAGS_XMAC) {
7024                 memcpy(data, niu_xmac_stat_keys,
7025                        sizeof(niu_xmac_stat_keys));
7026                 data += sizeof(niu_xmac_stat_keys);
7027         } else {
7028                 memcpy(data, niu_bmac_stat_keys,
7029                        sizeof(niu_bmac_stat_keys));
7030                 data += sizeof(niu_bmac_stat_keys);
7031         }
7032         for (i = 0; i < np->num_rx_rings; i++) {
7033                 memcpy(data, niu_rxchan_stat_keys,
7034                        sizeof(niu_rxchan_stat_keys));
7035                 data += sizeof(niu_rxchan_stat_keys);
7036         }
7037         for (i = 0; i < np->num_tx_rings; i++) {
7038                 memcpy(data, niu_txchan_stat_keys,
7039                        sizeof(niu_txchan_stat_keys));
7040                 data += sizeof(niu_txchan_stat_keys);
7041         }
7042 }
7043
7044 static int niu_get_stats_count(struct net_device *dev)
7045 {
7046         struct niu *np = netdev_priv(dev);
7047
7048         return ((np->flags & NIU_FLAGS_XMAC ?
7049                  NUM_XMAC_STAT_KEYS :
7050                  NUM_BMAC_STAT_KEYS) +
7051                 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7052                 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
7053 }
7054
7055 static void niu_get_ethtool_stats(struct net_device *dev,
7056                                   struct ethtool_stats *stats, u64 *data)
7057 {
7058         struct niu *np = netdev_priv(dev);
7059         int i;
7060
7061         niu_sync_mac_stats(np);
7062         if (np->flags & NIU_FLAGS_XMAC) {
7063                 memcpy(data, &np->mac_stats.xmac,
7064                        sizeof(struct niu_xmac_stats));
7065                 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7066         } else {
7067                 memcpy(data, &np->mac_stats.bmac,
7068                        sizeof(struct niu_bmac_stats));
7069                 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7070         }
7071         for (i = 0; i < np->num_rx_rings; i++) {
7072                 struct rx_ring_info *rp = &np->rx_rings[i];
7073
7074                 niu_sync_rx_discard_stats(np, rp, 0);
7075
7076                 data[0] = rp->rx_channel;
7077                 data[1] = rp->rx_packets;
7078                 data[2] = rp->rx_bytes;
7079                 data[3] = rp->rx_dropped;
7080                 data[4] = rp->rx_errors;
7081                 data += 5;
7082         }
7083         for (i = 0; i < np->num_tx_rings; i++) {
7084                 struct tx_ring_info *rp = &np->tx_rings[i];
7085
7086                 data[0] = rp->tx_channel;
7087                 data[1] = rp->tx_packets;
7088                 data[2] = rp->tx_bytes;
7089                 data[3] = rp->tx_errors;
7090                 data += 4;
7091         }
7092 }
7093
7094 static u64 niu_led_state_save(struct niu *np)
7095 {
7096         if (np->flags & NIU_FLAGS_XMAC)
7097                 return nr64_mac(XMAC_CONFIG);
7098         else
7099                 return nr64_mac(BMAC_XIF_CONFIG);
7100 }
7101
7102 static void niu_led_state_restore(struct niu *np, u64 val)
7103 {
7104         if (np->flags & NIU_FLAGS_XMAC)
7105                 nw64_mac(XMAC_CONFIG, val);
7106         else
7107                 nw64_mac(BMAC_XIF_CONFIG, val);
7108 }
7109
7110 static void niu_force_led(struct niu *np, int on)
7111 {
7112         u64 val, reg, bit;
7113
7114         if (np->flags & NIU_FLAGS_XMAC) {
7115                 reg = XMAC_CONFIG;
7116                 bit = XMAC_CONFIG_FORCE_LED_ON;
7117         } else {
7118                 reg = BMAC_XIF_CONFIG;
7119                 bit = BMAC_XIF_CONFIG_LINK_LED;
7120         }
7121
7122         val = nr64_mac(reg);
7123         if (on)
7124                 val |= bit;
7125         else
7126                 val &= ~bit;
7127         nw64_mac(reg, val);
7128 }
7129
7130 static int niu_phys_id(struct net_device *dev, u32 data)
7131 {
7132         struct niu *np = netdev_priv(dev);
7133         u64 orig_led_state;
7134         int i;
7135
7136         if (!netif_running(dev))
7137                 return -EAGAIN;
7138
7139         if (data == 0)
7140                 data = 2;
7141
7142         orig_led_state = niu_led_state_save(np);
7143         for (i = 0; i < (data * 2); i++) {
7144                 int on = ((i % 2) == 0);
7145
7146                 niu_force_led(np, on);
7147
7148                 if (msleep_interruptible(500))
7149                         break;
7150         }
7151         niu_led_state_restore(np, orig_led_state);
7152
7153         return 0;
7154 }
7155
7156 static const struct ethtool_ops niu_ethtool_ops = {
7157         .get_drvinfo            = niu_get_drvinfo,
7158         .get_link               = ethtool_op_get_link,
7159         .get_msglevel           = niu_get_msglevel,
7160         .set_msglevel           = niu_set_msglevel,
7161         .get_eeprom_len         = niu_get_eeprom_len,
7162         .get_eeprom             = niu_get_eeprom,
7163         .get_settings           = niu_get_settings,
7164         .set_settings           = niu_set_settings,
7165         .get_strings            = niu_get_strings,
7166         .get_stats_count        = niu_get_stats_count,
7167         .get_ethtool_stats      = niu_get_ethtool_stats,
7168         .phys_id                = niu_phys_id,
7169         .get_rxhash             = niu_get_hash_opts,
7170         .set_rxhash             = niu_set_hash_opts,
7171 };
7172
7173 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7174                               int ldg, int ldn)
7175 {
7176         if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7177                 return -EINVAL;
7178         if (ldn < 0 || ldn > LDN_MAX)
7179                 return -EINVAL;
7180
7181         parent->ldg_map[ldn] = ldg;
7182
7183         if (np->parent->plat_type == PLAT_TYPE_NIU) {
7184                 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7185                  * the firmware, and we're not supposed to change them.
7186                  * Validate the mapping, because if it's wrong we probably
7187                  * won't get any interrupts and that's painful to debug.
7188                  */
7189                 if (nr64(LDG_NUM(ldn)) != ldg) {
7190                         dev_err(np->device, PFX "Port %u, mis-matched "
7191                                 "LDG assignment "
7192                                 "for ldn %d, should be %d is %llu\n",
7193                                 np->port, ldn, ldg,
7194                                 (unsigned long long) nr64(LDG_NUM(ldn)));
7195                         return -EINVAL;
7196                 }
7197         } else
7198                 nw64(LDG_NUM(ldn), ldg);
7199
7200         return 0;
7201 }
7202
7203 static int niu_set_ldg_timer_res(struct niu *np, int res)
7204 {
7205         if (res < 0 || res > LDG_TIMER_RES_VAL)
7206                 return -EINVAL;
7207
7208
7209         nw64(LDG_TIMER_RES, res);
7210
7211         return 0;
7212 }
7213
7214 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7215 {
7216         if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7217             (func < 0 || func > 3) ||
7218             (vector < 0 || vector > 0x1f))
7219                 return -EINVAL;
7220
7221         nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7222
7223         return 0;
7224 }
7225
7226 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7227 {
7228         u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7229                                  (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7230         int limit;
7231
7232         if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7233                 return -EINVAL;
7234
7235         frame = frame_base;
7236         nw64(ESPC_PIO_STAT, frame);
7237         limit = 64;
7238         do {
7239                 udelay(5);
7240                 frame = nr64(ESPC_PIO_STAT);
7241                 if (frame & ESPC_PIO_STAT_READ_END)
7242                         break;
7243         } while (limit--);
7244         if (!(frame & ESPC_PIO_STAT_READ_END)) {
7245                 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
7246                         (unsigned long long) frame);
7247                 return -ENODEV;
7248         }
7249
7250         frame = frame_base;
7251         nw64(ESPC_PIO_STAT, frame);
7252         limit = 64;
7253         do {
7254                 udelay(5);
7255                 frame = nr64(ESPC_PIO_STAT);
7256                 if (frame & ESPC_PIO_STAT_READ_END)
7257                         break;
7258         } while (limit--);
7259         if (!(frame & ESPC_PIO_STAT_READ_END)) {
7260                 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
7261                         (unsigned long long) frame);
7262                 return -ENODEV;
7263         }
7264
7265         frame = nr64(ESPC_PIO_STAT);
7266         return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
7267 }
7268
7269 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
7270 {
7271         int err = niu_pci_eeprom_read(np, off);
7272         u16 val;
7273
7274         if (err < 0)
7275                 return err;
7276         val = (err << 8);
7277         err = niu_pci_eeprom_read(np, off + 1);
7278         if (err < 0)
7279                 return err;
7280         val |= (err & 0xff);
7281
7282         return val;
7283 }
7284
7285 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
7286 {
7287         int err = niu_pci_eeprom_read(np, off);
7288         u16 val;
7289
7290         if (err < 0)
7291                 return err;
7292
7293         val = (err & 0xff);
7294         err = niu_pci_eeprom_read(np, off + 1);
7295         if (err < 0)
7296                 return err;
7297
7298         val |= (err & 0xff) << 8;
7299
7300         return val;
7301 }
7302
7303 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
7304                                               u32 off,
7305                                               char *namebuf,
7306                                               int namebuf_len)
7307 {
7308         int i;
7309
7310         for (i = 0; i < namebuf_len; i++) {
7311                 int err = niu_pci_eeprom_read(np, off + i);
7312                 if (err < 0)
7313                         return err;
7314                 *namebuf++ = err;
7315                 if (!err)
7316                         break;
7317         }
7318         if (i >= namebuf_len)
7319                 return -EINVAL;
7320
7321         return i + 1;
7322 }
7323
7324 static void __devinit niu_vpd_parse_version(struct niu *np)
7325 {
7326         struct niu_vpd *vpd = &np->vpd;
7327         int len = strlen(vpd->version) + 1;
7328         const char *s = vpd->version;
7329         int i;
7330
7331         for (i = 0; i < len - 5; i++) {
7332                 if (!strncmp(s + i, "FCode ", 5))
7333                         break;
7334         }
7335         if (i >= len - 5)
7336                 return;
7337
7338         s += i + 5;
7339         sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
7340
7341         niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
7342                vpd->fcode_major, vpd->fcode_minor);
7343         if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
7344             (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
7345              vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
7346                 np->flags |= NIU_FLAGS_VPD_VALID;
7347 }
7348
7349 /* ESPC_PIO_EN_ENABLE must be set */
7350 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
7351                                             u32 start, u32 end)
7352 {
7353         unsigned int found_mask = 0;
7354 #define FOUND_MASK_MODEL        0x00000001
7355 #define FOUND_MASK_BMODEL       0x00000002
7356 #define FOUND_MASK_VERS         0x00000004
7357 #define FOUND_MASK_MAC          0x00000008
7358 #define FOUND_MASK_NMAC         0x00000010
7359 #define FOUND_MASK_PHY          0x00000020
7360 #define FOUND_MASK_ALL          0x0000003f
7361
7362         niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
7363                start, end);
7364         while (start < end) {
7365                 int len, err, instance, type, prop_len;
7366                 char namebuf[64];
7367                 u8 *prop_buf;
7368                 int max_len;
7369
7370                 if (found_mask == FOUND_MASK_ALL) {
7371                         niu_vpd_parse_version(np);
7372                         return 1;
7373                 }
7374
7375                 err = niu_pci_eeprom_read(np, start + 2);
7376                 if (err < 0)
7377                         return err;
7378                 len = err;
7379                 start += 3;
7380
7381                 instance = niu_pci_eeprom_read(np, start);
7382                 type = niu_pci_eeprom_read(np, start + 3);
7383                 prop_len = niu_pci_eeprom_read(np, start + 4);
7384                 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
7385                 if (err < 0)
7386                         return err;
7387
7388                 prop_buf = NULL;
7389                 max_len = 0;
7390                 if (!strcmp(namebuf, "model")) {
7391                         prop_buf = np->vpd.model;
7392                         max_len = NIU_VPD_MODEL_MAX;
7393                         found_mask |= FOUND_MASK_MODEL;
7394                 } else if (!strcmp(namebuf, "board-model")) {
7395                         prop_buf = np->vpd.board_model;
7396                         max_len = NIU_VPD_BD_MODEL_MAX;
7397                         found_mask |= FOUND_MASK_BMODEL;
7398                 } else if (!strcmp(namebuf, "version")) {
7399                         prop_buf = np->vpd.version;
7400                         max_len = NIU_VPD_VERSION_MAX;
7401                         found_mask |= FOUND_MASK_VERS;
7402                 } else if (!strcmp(namebuf, "local-mac-address")) {
7403                         prop_buf = np->vpd.local_mac;
7404                         max_len = ETH_ALEN;
7405                         found_mask |= FOUND_MASK_MAC;
7406                 } else if (!strcmp(namebuf, "num-mac-addresses")) {
7407                         prop_buf = &np->vpd.mac_num;
7408                         max_len = 1;
7409                         found_mask |= FOUND_MASK_NMAC;
7410                 } else if (!strcmp(namebuf, "phy-type")) {
7411                         prop_buf = np->vpd.phy_type;
7412                         max_len = NIU_VPD_PHY_TYPE_MAX;
7413                         found_mask |= FOUND_MASK_PHY;
7414                 }
7415
7416                 if (max_len && prop_len > max_len) {
7417                         dev_err(np->device, PFX "Property '%s' length (%d) is "
7418                                 "too long.\n", namebuf, prop_len);
7419                         return -EINVAL;
7420                 }
7421
7422                 if (prop_buf) {
7423                         u32 off = start + 5 + err;
7424                         int i;
7425
7426                         niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
7427                                "len[%d]\n", namebuf, prop_len);
7428                         for (i = 0; i < prop_len; i++)
7429                                 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
7430                 }
7431
7432                 start += len;
7433         }
7434
7435         return 0;
7436 }
7437
7438 /* ESPC_PIO_EN_ENABLE must be set */
7439 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
7440 {
7441         u32 offset;
7442         int err;
7443
7444         err = niu_pci_eeprom_read16_swp(np, start + 1);
7445         if (err < 0)
7446                 return;
7447
7448         offset = err + 3;
7449
7450         while (start + offset < ESPC_EEPROM_SIZE) {
7451                 u32 here = start + offset;
7452                 u32 end;
7453
7454                 err = niu_pci_eeprom_read(np, here);
7455                 if (err != 0x90)
7456                         return;
7457
7458                 err = niu_pci_eeprom_read16_swp(np, here + 1);
7459                 if (err < 0)
7460                         return;
7461
7462                 here = start + offset + 3;
7463                 end = start + offset + err;
7464
7465                 offset += err;
7466
7467                 err = niu_pci_vpd_scan_props(np, here, end);
7468                 if (err < 0 || err == 1)
7469                         return;
7470         }
7471 }
7472
7473 /* ESPC_PIO_EN_ENABLE must be set */
7474 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
7475 {
7476         u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
7477         int err;
7478
7479         while (start < end) {
7480                 ret = start;
7481
7482                 /* ROM header signature?  */
7483                 err = niu_pci_eeprom_read16(np, start +  0);
7484                 if (err != 0x55aa)
7485                         return 0;
7486
7487                 /* Apply offset to PCI data structure.  */
7488                 err = niu_pci_eeprom_read16(np, start + 23);
7489                 if (err < 0)
7490                         return 0;
7491                 start += err;
7492
7493                 /* Check for "PCIR" signature.  */
7494                 err = niu_pci_eeprom_read16(np, start +  0);
7495                 if (err != 0x5043)
7496                         return 0;
7497                 err = niu_pci_eeprom_read16(np, start +  2);
7498                 if (err != 0x4952)
7499                         return 0;
7500
7501                 /* Check for OBP image type.  */
7502                 err = niu_pci_eeprom_read(np, start + 20);
7503                 if (err < 0)
7504                         return 0;
7505                 if (err != 0x01) {
7506                         err = niu_pci_eeprom_read(np, ret + 2);
7507                         if (err < 0)
7508                                 return 0;
7509
7510                         start = ret + (err * 512);
7511                         continue;
7512                 }
7513
7514                 err = niu_pci_eeprom_read16_swp(np, start + 8);
7515                 if (err < 0)
7516                         return err;
7517                 ret += err;
7518
7519                 err = niu_pci_eeprom_read(np, ret + 0);
7520                 if (err != 0x82)
7521                         return 0;
7522
7523                 return ret;
7524         }
7525
7526         return 0;
7527 }
7528
7529 static int __devinit niu_phy_type_prop_decode(struct niu *np,
7530                                               const char *phy_prop)
7531 {
7532         if (!strcmp(phy_prop, "mif")) {
7533                 /* 1G copper, MII */
7534                 np->flags &= ~(NIU_FLAGS_FIBER |
7535                                NIU_FLAGS_10G);
7536                 np->mac_xcvr = MAC_XCVR_MII;
7537         } else if (!strcmp(phy_prop, "xgf")) {
7538                 /* 10G fiber, XPCS */
7539                 np->flags |= (NIU_FLAGS_10G |
7540                               NIU_FLAGS_FIBER);
7541                 np->mac_xcvr = MAC_XCVR_XPCS;
7542         } else if (!strcmp(phy_prop, "pcs")) {
7543                 /* 1G fiber, PCS */
7544                 np->flags &= ~NIU_FLAGS_10G;
7545                 np->flags |= NIU_FLAGS_FIBER;
7546                 np->mac_xcvr = MAC_XCVR_PCS;
7547         } else if (!strcmp(phy_prop, "xgc")) {
7548                 /* 10G copper, XPCS */
7549                 np->flags |= NIU_FLAGS_10G;
7550                 np->flags &= ~NIU_FLAGS_FIBER;
7551                 np->mac_xcvr = MAC_XCVR_XPCS;
7552         } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
7553                 /* 10G Serdes or 1G Serdes, default to 10G */
7554                 np->flags |= NIU_FLAGS_10G;
7555                 np->flags &= ~NIU_FLAGS_FIBER;
7556                 np->flags |= NIU_FLAGS_XCVR_SERDES;
7557                 np->mac_xcvr = MAC_XCVR_XPCS;
7558         } else {
7559                 return -EINVAL;
7560         }
7561         return 0;
7562 }
7563
7564 static int niu_pci_vpd_get_nports(struct niu *np)
7565 {
7566         int ports = 0;
7567
7568         if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
7569             (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
7570             (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
7571             (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
7572             (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
7573                 ports = 4;
7574         } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
7575                    (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
7576                    (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
7577                    (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
7578                 ports = 2;
7579         }
7580
7581         return ports;
7582 }
7583
7584 static void __devinit niu_pci_vpd_validate(struct niu *np)
7585 {
7586         struct net_device *dev = np->dev;
7587         struct niu_vpd *vpd = &np->vpd;
7588         u8 val8;
7589
7590         if (!is_valid_ether_addr(&vpd->local_mac[0])) {
7591                 dev_err(np->device, PFX "VPD MAC invalid, "
7592                         "falling back to SPROM.\n");
7593
7594                 np->flags &= ~NIU_FLAGS_VPD_VALID;
7595                 return;
7596         }
7597
7598         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
7599             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
7600                 np->flags |= NIU_FLAGS_10G;
7601                 np->flags &= ~NIU_FLAGS_FIBER;
7602                 np->flags |= NIU_FLAGS_XCVR_SERDES;
7603                 np->mac_xcvr = MAC_XCVR_PCS;
7604                 if (np->port > 1) {
7605                         np->flags |= NIU_FLAGS_FIBER;
7606                         np->flags &= ~NIU_FLAGS_10G;
7607                 }
7608                 if (np->flags & NIU_FLAGS_10G)
7609                          np->mac_xcvr = MAC_XCVR_XPCS;
7610         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
7611                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
7612                               NIU_FLAGS_HOTPLUG_PHY);
7613         } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
7614                 dev_err(np->device, PFX "Illegal phy string [%s].\n",
7615                         np->vpd.phy_type);
7616                 dev_err(np->device, PFX "Falling back to SPROM.\n");
7617                 np->flags &= ~NIU_FLAGS_VPD_VALID;
7618                 return;
7619         }
7620
7621         memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
7622
7623         val8 = dev->perm_addr[5];
7624         dev->perm_addr[5] += np->port;
7625         if (dev->perm_addr[5] < val8)
7626                 dev->perm_addr[4]++;
7627
7628         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7629 }
7630
7631 static int __devinit niu_pci_probe_sprom(struct niu *np)
7632 {
7633         struct net_device *dev = np->dev;
7634         int len, i;
7635         u64 val, sum;
7636         u8 val8;
7637
7638         val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
7639         val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
7640         len = val / 4;
7641
7642         np->eeprom_len = len;
7643
7644         niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
7645
7646         sum = 0;
7647         for (i = 0; i < len; i++) {
7648                 val = nr64(ESPC_NCR(i));
7649                 sum += (val >>  0) & 0xff;
7650                 sum += (val >>  8) & 0xff;
7651                 sum += (val >> 16) & 0xff;
7652                 sum += (val >> 24) & 0xff;
7653         }
7654         niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
7655         if ((sum & 0xff) != 0xab) {
7656                 dev_err(np->device, PFX "Bad SPROM checksum "
7657                         "(%x, should be 0xab)\n", (int) (sum & 0xff));
7658                 return -EINVAL;
7659         }
7660
7661         val = nr64(ESPC_PHY_TYPE);
7662         switch (np->port) {
7663         case 0:
7664                 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
7665                         ESPC_PHY_TYPE_PORT0_SHIFT;
7666                 break;
7667         case 1:
7668                 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
7669                         ESPC_PHY_TYPE_PORT1_SHIFT;
7670                 break;
7671         case 2:
7672                 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
7673                         ESPC_PHY_TYPE_PORT2_SHIFT;
7674                 break;
7675         case 3:
7676                 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
7677                         ESPC_PHY_TYPE_PORT3_SHIFT;
7678                 break;
7679         default:
7680                 dev_err(np->device, PFX "Bogus port number %u\n",
7681                         np->port);
7682                 return -EINVAL;
7683         }
7684         niudbg(PROBE, "SPROM: PHY type %x\n", val8);
7685
7686         switch (val8) {
7687         case ESPC_PHY_TYPE_1G_COPPER:
7688                 /* 1G copper, MII */
7689                 np->flags &= ~(NIU_FLAGS_FIBER |
7690                                NIU_FLAGS_10G);
7691                 np->mac_xcvr = MAC_XCVR_MII;
7692                 break;
7693
7694         case ESPC_PHY_TYPE_1G_FIBER:
7695                 /* 1G fiber, PCS */
7696                 np->flags &= ~NIU_FLAGS_10G;
7697                 np->flags |= NIU_FLAGS_FIBER;
7698                 np->mac_xcvr = MAC_XCVR_PCS;
7699                 break;
7700
7701         case ESPC_PHY_TYPE_10G_COPPER:
7702                 /* 10G copper, XPCS */
7703                 np->flags |= NIU_FLAGS_10G;
7704                 np->flags &= ~NIU_FLAGS_FIBER;
7705                 np->mac_xcvr = MAC_XCVR_XPCS;
7706                 break;
7707
7708         case ESPC_PHY_TYPE_10G_FIBER:
7709                 /* 10G fiber, XPCS */
7710                 np->flags |= (NIU_FLAGS_10G |
7711                               NIU_FLAGS_FIBER);
7712                 np->mac_xcvr = MAC_XCVR_XPCS;
7713                 break;
7714
7715         default:
7716                 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
7717                 return -EINVAL;
7718         }
7719
7720         val = nr64(ESPC_MAC_ADDR0);
7721         niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
7722                (unsigned long long) val);
7723         dev->perm_addr[0] = (val >>  0) & 0xff;
7724         dev->perm_addr[1] = (val >>  8) & 0xff;
7725         dev->perm_addr[2] = (val >> 16) & 0xff;
7726         dev->perm_addr[3] = (val >> 24) & 0xff;
7727
7728         val = nr64(ESPC_MAC_ADDR1);
7729         niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
7730                (unsigned long long) val);
7731         dev->perm_addr[4] = (val >>  0) & 0xff;
7732         dev->perm_addr[5] = (val >>  8) & 0xff;
7733
7734         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
7735                 dev_err(np->device, PFX "SPROM MAC address invalid\n");
7736                 dev_err(np->device, PFX "[ \n");
7737                 for (i = 0; i < 6; i++)
7738                         printk("%02x ", dev->perm_addr[i]);
7739                 printk("]\n");
7740                 return -EINVAL;
7741         }
7742
7743         val8 = dev->perm_addr[5];
7744         dev->perm_addr[5] += np->port;
7745         if (dev->perm_addr[5] < val8)
7746                 dev->perm_addr[4]++;
7747
7748         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7749
7750         val = nr64(ESPC_MOD_STR_LEN);
7751         niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
7752                (unsigned long long) val);
7753         if (val >= 8 * 4)
7754                 return -EINVAL;
7755
7756         for (i = 0; i < val; i += 4) {
7757                 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
7758
7759                 np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
7760                 np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
7761                 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
7762                 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
7763         }
7764         np->vpd.model[val] = '\0';
7765
7766         val = nr64(ESPC_BD_MOD_STR_LEN);
7767         niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
7768                (unsigned long long) val);
7769         if (val >= 4 * 4)
7770                 return -EINVAL;
7771
7772         for (i = 0; i < val; i += 4) {
7773                 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
7774
7775                 np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
7776                 np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
7777                 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
7778                 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
7779         }
7780         np->vpd.board_model[val] = '\0';
7781
7782         np->vpd.mac_num =
7783                 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
7784         niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
7785                np->vpd.mac_num);
7786
7787         return 0;
7788 }
7789
7790 static int __devinit niu_get_and_validate_port(struct niu *np)
7791 {
7792         struct niu_parent *parent = np->parent;
7793
7794         if (np->port <= 1)
7795                 np->flags |= NIU_FLAGS_XMAC;
7796
7797         if (!parent->num_ports) {
7798                 if (parent->plat_type == PLAT_TYPE_NIU) {
7799                         parent->num_ports = 2;
7800                 } else {
7801                         parent->num_ports = niu_pci_vpd_get_nports(np);
7802                         if (!parent->num_ports) {
7803                                 /* Fall back to SPROM as last resort.
7804                                  * This will fail on most cards.
7805                                  */
7806                                 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
7807                                         ESPC_NUM_PORTS_MACS_VAL;
7808
7809                                 /* All of the current probing methods fail on
7810                                  * Maramba on-board parts.
7811                                  */
7812                                 if (!parent->num_ports)
7813                                         parent->num_ports = 4;
7814                         }
7815                 }
7816         }
7817
7818         niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
7819                np->port, parent->num_ports);
7820         if (np->port >= parent->num_ports)
7821                 return -ENODEV;
7822
7823         return 0;
7824 }
7825
7826 static int __devinit phy_record(struct niu_parent *parent,
7827                                 struct phy_probe_info *p,
7828                                 int dev_id_1, int dev_id_2, u8 phy_port,
7829                                 int type)
7830 {
7831         u32 id = (dev_id_1 << 16) | dev_id_2;
7832         u8 idx;
7833
7834         if (dev_id_1 < 0 || dev_id_2 < 0)
7835                 return 0;
7836         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
7837                 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
7838                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
7839                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
7840                         return 0;
7841         } else {
7842                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
7843                         return 0;
7844         }
7845
7846         pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
7847                 parent->index, id,
7848                 (type == PHY_TYPE_PMA_PMD ?
7849                  "PMA/PMD" :
7850                  (type == PHY_TYPE_PCS ?
7851                   "PCS" : "MII")),
7852                 phy_port);
7853
7854         if (p->cur[type] >= NIU_MAX_PORTS) {
7855                 printk(KERN_ERR PFX "Too many PHY ports.\n");
7856                 return -EINVAL;
7857         }
7858         idx = p->cur[type];
7859         p->phy_id[type][idx] = id;
7860         p->phy_port[type][idx] = phy_port;
7861         p->cur[type] = idx + 1;
7862         return 0;
7863 }
7864
7865 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
7866 {
7867         int i;
7868
7869         for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
7870                 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
7871                         return 1;
7872         }
7873         for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
7874                 if (p->phy_port[PHY_TYPE_PCS][i] == port)
7875                         return 1;
7876         }
7877
7878         return 0;
7879 }
7880
7881 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
7882 {
7883         int port, cnt;
7884
7885         cnt = 0;
7886         *lowest = 32;
7887         for (port = 8; port < 32; port++) {
7888                 if (port_has_10g(p, port)) {
7889                         if (!cnt)
7890                                 *lowest = port;
7891                         cnt++;
7892                 }
7893         }
7894
7895         return cnt;
7896 }
7897
7898 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
7899 {
7900         *lowest = 32;
7901         if (p->cur[PHY_TYPE_MII])
7902                 *lowest = p->phy_port[PHY_TYPE_MII][0];
7903
7904         return p->cur[PHY_TYPE_MII];
7905 }
7906
7907 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
7908 {
7909         int num_ports = parent->num_ports;
7910         int i;
7911
7912         for (i = 0; i < num_ports; i++) {
7913                 parent->rxchan_per_port[i] = (16 / num_ports);
7914                 parent->txchan_per_port[i] = (16 / num_ports);
7915
7916                 pr_info(PFX "niu%d: Port %u [%u RX chans] "
7917                         "[%u TX chans]\n",
7918                         parent->index, i,
7919                         parent->rxchan_per_port[i],
7920                         parent->txchan_per_port[i]);
7921         }
7922 }
7923
7924 static void __devinit niu_divide_channels(struct niu_parent *parent,
7925                                           int num_10g, int num_1g)
7926 {
7927         int num_ports = parent->num_ports;
7928         int rx_chans_per_10g, rx_chans_per_1g;
7929         int tx_chans_per_10g, tx_chans_per_1g;
7930         int i, tot_rx, tot_tx;
7931
7932         if (!num_10g || !num_1g) {
7933                 rx_chans_per_10g = rx_chans_per_1g =
7934                         (NIU_NUM_RXCHAN / num_ports);
7935                 tx_chans_per_10g = tx_chans_per_1g =
7936                         (NIU_NUM_TXCHAN / num_ports);
7937         } else {
7938                 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
7939                 rx_chans_per_10g = (NIU_NUM_RXCHAN -
7940                                     (rx_chans_per_1g * num_1g)) /
7941                         num_10g;
7942
7943                 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
7944                 tx_chans_per_10g = (NIU_NUM_TXCHAN -
7945                                     (tx_chans_per_1g * num_1g)) /
7946                         num_10g;
7947         }
7948
7949         tot_rx = tot_tx = 0;
7950         for (i = 0; i < num_ports; i++) {
7951                 int type = phy_decode(parent->port_phy, i);
7952
7953                 if (type == PORT_TYPE_10G) {
7954                         parent->rxchan_per_port[i] = rx_chans_per_10g;
7955                         parent->txchan_per_port[i] = tx_chans_per_10g;
7956                 } else {
7957                         parent->rxchan_per_port[i] = rx_chans_per_1g;
7958                         parent->txchan_per_port[i] = tx_chans_per_1g;
7959                 }
7960                 pr_info(PFX "niu%d: Port %u [%u RX chans] "
7961                         "[%u TX chans]\n",
7962                         parent->index, i,
7963                         parent->rxchan_per_port[i],
7964                         parent->txchan_per_port[i]);
7965                 tot_rx += parent->rxchan_per_port[i];
7966                 tot_tx += parent->txchan_per_port[i];
7967         }
7968
7969         if (tot_rx > NIU_NUM_RXCHAN) {
7970                 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
7971                        "resetting to one per port.\n",
7972                        parent->index, tot_rx);
7973                 for (i = 0; i < num_ports; i++)
7974                         parent->rxchan_per_port[i] = 1;
7975         }
7976         if (tot_tx > NIU_NUM_TXCHAN) {
7977                 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
7978                        "resetting to one per port.\n",
7979                        parent->index, tot_tx);
7980                 for (i = 0; i < num_ports; i++)
7981                         parent->txchan_per_port[i] = 1;
7982         }
7983         if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
7984                 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
7985                        "RX[%d] TX[%d]\n",
7986                        parent->index, tot_rx, tot_tx);
7987         }
7988 }
7989
7990 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
7991                                             int num_10g, int num_1g)
7992 {
7993         int i, num_ports = parent->num_ports;
7994         int rdc_group, rdc_groups_per_port;
7995         int rdc_channel_base;
7996
7997         rdc_group = 0;
7998         rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
7999
8000         rdc_channel_base = 0;
8001
8002         for (i = 0; i < num_ports; i++) {
8003                 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8004                 int grp, num_channels = parent->rxchan_per_port[i];
8005                 int this_channel_offset;
8006
8007                 tp->first_table_num = rdc_group;
8008                 tp->num_tables = rdc_groups_per_port;
8009                 this_channel_offset = 0;
8010                 for (grp = 0; grp < tp->num_tables; grp++) {
8011                         struct rdc_table *rt = &tp->tables[grp];
8012                         int slot;
8013
8014                         pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
8015                                 parent->index, i, tp->first_table_num + grp);
8016                         for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8017                                 rt->rxdma_channel[slot] =
8018                                         rdc_channel_base + this_channel_offset;
8019
8020                                 printk("%d ", rt->rxdma_channel[slot]);
8021
8022                                 if (++this_channel_offset == num_channels)
8023                                         this_channel_offset = 0;
8024                         }
8025                         printk("]\n");
8026                 }
8027
8028                 parent->rdc_default[i] = rdc_channel_base;
8029
8030                 rdc_channel_base += num_channels;
8031                 rdc_group += rdc_groups_per_port;
8032         }
8033 }
8034
8035 static int __devinit fill_phy_probe_info(struct niu *np,
8036                                          struct niu_parent *parent,
8037                                          struct phy_probe_info *info)
8038 {
8039         unsigned long flags;
8040         int port, err;
8041
8042         memset(info, 0, sizeof(*info));
8043
8044         /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
8045         niu_lock_parent(np, flags);
8046         err = 0;
8047         for (port = 8; port < 32; port++) {
8048                 int dev_id_1, dev_id_2;
8049
8050                 dev_id_1 = mdio_read(np, port,
8051                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8052                 dev_id_2 = mdio_read(np, port,
8053                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8054                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8055                                  PHY_TYPE_PMA_PMD);
8056                 if (err)
8057                         break;
8058                 dev_id_1 = mdio_read(np, port,
8059                                      NIU_PCS_DEV_ADDR, MII_PHYSID1);
8060                 dev_id_2 = mdio_read(np, port,
8061                                      NIU_PCS_DEV_ADDR, MII_PHYSID2);
8062                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8063                                  PHY_TYPE_PCS);
8064                 if (err)
8065                         break;
8066                 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8067                 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8068                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8069                                  PHY_TYPE_MII);
8070                 if (err)
8071                         break;
8072         }
8073         niu_unlock_parent(np, flags);
8074
8075         return err;
8076 }
8077
8078 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8079 {
8080         struct phy_probe_info *info = &parent->phy_probe_info;
8081         int lowest_10g, lowest_1g;
8082         int num_10g, num_1g;
8083         u32 val;
8084         int err;
8085
8086         num_10g = num_1g = 0;
8087
8088         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8089             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8090                 num_10g = 0;
8091                 num_1g = 2;
8092                 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8093                 parent->num_ports = 4;
8094                 val = (phy_encode(PORT_TYPE_1G, 0) |
8095                        phy_encode(PORT_TYPE_1G, 1) |
8096                        phy_encode(PORT_TYPE_1G, 2) |
8097                        phy_encode(PORT_TYPE_1G, 3));
8098         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8099                 num_10g = 2;
8100                 num_1g = 0;
8101                 parent->num_ports = 2;
8102                 val = (phy_encode(PORT_TYPE_10G, 0) |
8103                        phy_encode(PORT_TYPE_10G, 1));
8104         } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8105                    (parent->plat_type == PLAT_TYPE_NIU)) {
8106                 /* this is the Monza case */
8107                 if (np->flags & NIU_FLAGS_10G) {
8108                         val = (phy_encode(PORT_TYPE_10G, 0) |
8109                                phy_encode(PORT_TYPE_10G, 1));
8110                 } else {
8111                         val = (phy_encode(PORT_TYPE_1G, 0) |
8112                                phy_encode(PORT_TYPE_1G, 1));
8113                 }
8114         } else {
8115                 err = fill_phy_probe_info(np, parent, info);
8116                 if (err)
8117                         return err;
8118
8119                 num_10g = count_10g_ports(info, &lowest_10g);
8120                 num_1g = count_1g_ports(info, &lowest_1g);
8121
8122                 switch ((num_10g << 4) | num_1g) {
8123                 case 0x24:
8124                         if (lowest_1g == 10)
8125                                 parent->plat_type = PLAT_TYPE_VF_P0;
8126                         else if (lowest_1g == 26)
8127                                 parent->plat_type = PLAT_TYPE_VF_P1;
8128                         else
8129                                 goto unknown_vg_1g_port;
8130
8131                         /* fallthru */
8132                 case 0x22:
8133                         val = (phy_encode(PORT_TYPE_10G, 0) |
8134                                phy_encode(PORT_TYPE_10G, 1) |
8135                                phy_encode(PORT_TYPE_1G, 2) |
8136                                phy_encode(PORT_TYPE_1G, 3));
8137                         break;
8138
8139                 case 0x20:
8140                         val = (phy_encode(PORT_TYPE_10G, 0) |
8141                                phy_encode(PORT_TYPE_10G, 1));
8142                         break;
8143
8144                 case 0x10:
8145                         val = phy_encode(PORT_TYPE_10G, np->port);
8146                         break;
8147
8148                 case 0x14:
8149                         if (lowest_1g == 10)
8150                                 parent->plat_type = PLAT_TYPE_VF_P0;
8151                         else if (lowest_1g == 26)
8152                                 parent->plat_type = PLAT_TYPE_VF_P1;
8153                         else
8154                                 goto unknown_vg_1g_port;
8155
8156                         /* fallthru */
8157                 case 0x13:
8158                         if ((lowest_10g & 0x7) == 0)
8159                                 val = (phy_encode(PORT_TYPE_10G, 0) |
8160                                        phy_encode(PORT_TYPE_1G, 1) |
8161                                        phy_encode(PORT_TYPE_1G, 2) |
8162                                        phy_encode(PORT_TYPE_1G, 3));
8163                         else
8164                                 val = (phy_encode(PORT_TYPE_1G, 0) |
8165                                        phy_encode(PORT_TYPE_10G, 1) |
8166                                        phy_encode(PORT_TYPE_1G, 2) |
8167                                        phy_encode(PORT_TYPE_1G, 3));
8168                         break;
8169
8170                 case 0x04:
8171                         if (lowest_1g == 10)
8172                                 parent->plat_type = PLAT_TYPE_VF_P0;
8173                         else if (lowest_1g == 26)
8174                                 parent->plat_type = PLAT_TYPE_VF_P1;
8175                         else
8176                                 goto unknown_vg_1g_port;
8177
8178                         val = (phy_encode(PORT_TYPE_1G, 0) |
8179                                phy_encode(PORT_TYPE_1G, 1) |
8180                                phy_encode(PORT_TYPE_1G, 2) |
8181                                phy_encode(PORT_TYPE_1G, 3));
8182                         break;
8183
8184                 default:
8185                         printk(KERN_ERR PFX "Unsupported port config "
8186                                "10G[%d] 1G[%d]\n",
8187                                num_10g, num_1g);
8188                         return -EINVAL;
8189                 }
8190         }
8191
8192         parent->port_phy = val;
8193
8194         if (parent->plat_type == PLAT_TYPE_NIU)
8195                 niu_n2_divide_channels(parent);
8196         else
8197                 niu_divide_channels(parent, num_10g, num_1g);
8198
8199         niu_divide_rdc_groups(parent, num_10g, num_1g);
8200
8201         return 0;
8202
8203 unknown_vg_1g_port:
8204         printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
8205                lowest_1g);
8206         return -EINVAL;
8207 }
8208
8209 static int __devinit niu_probe_ports(struct niu *np)
8210 {
8211         struct niu_parent *parent = np->parent;
8212         int err, i;
8213
8214         niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
8215                parent->port_phy);
8216
8217         if (parent->port_phy == PORT_PHY_UNKNOWN) {
8218                 err = walk_phys(np, parent);
8219                 if (err)
8220                         return err;
8221
8222                 niu_set_ldg_timer_res(np, 2);
8223                 for (i = 0; i <= LDN_MAX; i++)
8224                         niu_ldn_irq_enable(np, i, 0);
8225         }
8226
8227         if (parent->port_phy == PORT_PHY_INVALID)
8228                 return -EINVAL;
8229
8230         return 0;
8231 }
8232
8233 static int __devinit niu_classifier_swstate_init(struct niu *np)
8234 {
8235         struct niu_classifier *cp = &np->clas;
8236
8237         niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
8238                np->parent->tcam_num_entries);
8239
8240         cp->tcam_index = (u16) np->port;
8241         cp->h1_init = 0xffffffff;
8242         cp->h2_init = 0xffff;
8243
8244         return fflp_early_init(np);
8245 }
8246
8247 static void __devinit niu_link_config_init(struct niu *np)
8248 {
8249         struct niu_link_config *lp = &np->link_config;
8250
8251         lp->advertising = (ADVERTISED_10baseT_Half |
8252                            ADVERTISED_10baseT_Full |
8253                            ADVERTISED_100baseT_Half |
8254                            ADVERTISED_100baseT_Full |
8255                            ADVERTISED_1000baseT_Half |
8256                            ADVERTISED_1000baseT_Full |
8257                            ADVERTISED_10000baseT_Full |
8258                            ADVERTISED_Autoneg);
8259         lp->speed = lp->active_speed = SPEED_INVALID;
8260         lp->duplex = lp->active_duplex = DUPLEX_INVALID;
8261 #if 0
8262         lp->loopback_mode = LOOPBACK_MAC;
8263         lp->active_speed = SPEED_10000;
8264         lp->active_duplex = DUPLEX_FULL;
8265 #else
8266         lp->loopback_mode = LOOPBACK_DISABLED;
8267 #endif
8268 }
8269
8270 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
8271 {
8272         switch (np->port) {
8273         case 0:
8274                 np->mac_regs = np->regs + XMAC_PORT0_OFF;
8275                 np->ipp_off  = 0x00000;
8276                 np->pcs_off  = 0x04000;
8277                 np->xpcs_off = 0x02000;
8278                 break;
8279
8280         case 1:
8281                 np->mac_regs = np->regs + XMAC_PORT1_OFF;
8282                 np->ipp_off  = 0x08000;
8283                 np->pcs_off  = 0x0a000;
8284                 np->xpcs_off = 0x08000;
8285                 break;
8286
8287         case 2:
8288                 np->mac_regs = np->regs + BMAC_PORT2_OFF;
8289                 np->ipp_off  = 0x04000;
8290                 np->pcs_off  = 0x0e000;
8291                 np->xpcs_off = ~0UL;
8292                 break;
8293
8294         case 3:
8295                 np->mac_regs = np->regs + BMAC_PORT3_OFF;
8296                 np->ipp_off  = 0x0c000;
8297                 np->pcs_off  = 0x12000;
8298                 np->xpcs_off = ~0UL;
8299                 break;
8300
8301         default:
8302                 dev_err(np->device, PFX "Port %u is invalid, cannot "
8303                         "compute MAC block offset.\n", np->port);
8304                 return -EINVAL;
8305         }
8306
8307         return 0;
8308 }
8309
8310 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
8311 {
8312         struct msix_entry msi_vec[NIU_NUM_LDG];
8313         struct niu_parent *parent = np->parent;
8314         struct pci_dev *pdev = np->pdev;
8315         int i, num_irqs, err;
8316         u8 first_ldg;
8317
8318         first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
8319         for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
8320                 ldg_num_map[i] = first_ldg + i;
8321
8322         num_irqs = (parent->rxchan_per_port[np->port] +
8323                     parent->txchan_per_port[np->port] +
8324                     (np->port == 0 ? 3 : 1));
8325         BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
8326
8327 retry:
8328         for (i = 0; i < num_irqs; i++) {
8329                 msi_vec[i].vector = 0;
8330                 msi_vec[i].entry = i;
8331         }
8332
8333         err = pci_enable_msix(pdev, msi_vec, num_irqs);
8334         if (err < 0) {
8335                 np->flags &= ~NIU_FLAGS_MSIX;
8336                 return;
8337         }
8338         if (err > 0) {
8339                 num_irqs = err;
8340                 goto retry;
8341         }
8342
8343         np->flags |= NIU_FLAGS_MSIX;
8344         for (i = 0; i < num_irqs; i++)
8345                 np->ldg[i].irq = msi_vec[i].vector;
8346         np->num_ldg = num_irqs;
8347 }
8348
8349 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
8350 {
8351 #ifdef CONFIG_SPARC64
8352         struct of_device *op = np->op;
8353         const u32 *int_prop;
8354         int i;
8355
8356         int_prop = of_get_property(op->node, "interrupts", NULL);
8357         if (!int_prop)
8358                 return -ENODEV;
8359
8360         for (i = 0; i < op->num_irqs; i++) {
8361                 ldg_num_map[i] = int_prop[i];
8362                 np->ldg[i].irq = op->irqs[i];
8363         }
8364
8365         np->num_ldg = op->num_irqs;
8366
8367         return 0;
8368 #else
8369         return -EINVAL;
8370 #endif
8371 }
8372
8373 static int __devinit niu_ldg_init(struct niu *np)
8374 {
8375         struct niu_parent *parent = np->parent;
8376         u8 ldg_num_map[NIU_NUM_LDG];
8377         int first_chan, num_chan;
8378         int i, err, ldg_rotor;
8379         u8 port;
8380
8381         np->num_ldg = 1;
8382         np->ldg[0].irq = np->dev->irq;
8383         if (parent->plat_type == PLAT_TYPE_NIU) {
8384                 err = niu_n2_irq_init(np, ldg_num_map);
8385                 if (err)
8386                         return err;
8387         } else
8388                 niu_try_msix(np, ldg_num_map);
8389
8390         port = np->port;
8391         for (i = 0; i < np->num_ldg; i++) {
8392                 struct niu_ldg *lp = &np->ldg[i];
8393
8394                 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
8395
8396                 lp->np = np;
8397                 lp->ldg_num = ldg_num_map[i];
8398                 lp->timer = 2; /* XXX */
8399
8400                 /* On N2 NIU the firmware has setup the SID mappings so they go
8401                  * to the correct values that will route the LDG to the proper
8402                  * interrupt in the NCU interrupt table.
8403                  */
8404                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
8405                         err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
8406                         if (err)
8407                                 return err;
8408                 }
8409         }
8410
8411         /* We adopt the LDG assignment ordering used by the N2 NIU
8412          * 'interrupt' properties because that simplifies a lot of
8413          * things.  This ordering is:
8414          *
8415          *      MAC
8416          *      MIF     (if port zero)
8417          *      SYSERR  (if port zero)
8418          *      RX channels
8419          *      TX channels
8420          */
8421
8422         ldg_rotor = 0;
8423
8424         err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
8425                                   LDN_MAC(port));
8426         if (err)
8427                 return err;
8428
8429         ldg_rotor++;
8430         if (ldg_rotor == np->num_ldg)
8431                 ldg_rotor = 0;
8432
8433         if (port == 0) {
8434                 err = niu_ldg_assign_ldn(np, parent,
8435                                          ldg_num_map[ldg_rotor],
8436                                          LDN_MIF);
8437                 if (err)
8438                         return err;
8439
8440                 ldg_rotor++;
8441                 if (ldg_rotor == np->num_ldg)
8442                         ldg_rotor = 0;
8443
8444                 err = niu_ldg_assign_ldn(np, parent,
8445                                          ldg_num_map[ldg_rotor],
8446                                          LDN_DEVICE_ERROR);
8447                 if (err)
8448                         return err;
8449
8450                 ldg_rotor++;
8451                 if (ldg_rotor == np->num_ldg)
8452                         ldg_rotor = 0;
8453
8454         }
8455
8456         first_chan = 0;
8457         for (i = 0; i < port; i++)
8458                 first_chan += parent->rxchan_per_port[port];
8459         num_chan = parent->rxchan_per_port[port];
8460
8461         for (i = first_chan; i < (first_chan + num_chan); i++) {
8462                 err = niu_ldg_assign_ldn(np, parent,
8463                                          ldg_num_map[ldg_rotor],
8464                                          LDN_RXDMA(i));
8465                 if (err)
8466                         return err;
8467                 ldg_rotor++;
8468                 if (ldg_rotor == np->num_ldg)
8469                         ldg_rotor = 0;
8470         }
8471
8472         first_chan = 0;
8473         for (i = 0; i < port; i++)
8474                 first_chan += parent->txchan_per_port[port];
8475         num_chan = parent->txchan_per_port[port];
8476         for (i = first_chan; i < (first_chan + num_chan); i++) {
8477                 err = niu_ldg_assign_ldn(np, parent,
8478                                          ldg_num_map[ldg_rotor],
8479                                          LDN_TXDMA(i));
8480                 if (err)
8481                         return err;
8482                 ldg_rotor++;
8483                 if (ldg_rotor == np->num_ldg)
8484                         ldg_rotor = 0;
8485         }
8486
8487         return 0;
8488 }
8489
8490 static void __devexit niu_ldg_free(struct niu *np)
8491 {
8492         if (np->flags & NIU_FLAGS_MSIX)
8493                 pci_disable_msix(np->pdev);
8494 }
8495
8496 static int __devinit niu_get_of_props(struct niu *np)
8497 {
8498 #ifdef CONFIG_SPARC64
8499         struct net_device *dev = np->dev;
8500         struct device_node *dp;
8501         const char *phy_type;
8502         const u8 *mac_addr;
8503         const char *model;
8504         int prop_len;
8505
8506         if (np->parent->plat_type == PLAT_TYPE_NIU)
8507                 dp = np->op->node;
8508         else
8509                 dp = pci_device_to_OF_node(np->pdev);
8510
8511         phy_type = of_get_property(dp, "phy-type", &prop_len);
8512         if (!phy_type) {
8513                 dev_err(np->device, PFX "%s: OF node lacks "
8514                         "phy-type property\n",
8515                         dp->full_name);
8516                 return -EINVAL;
8517         }
8518
8519         if (!strcmp(phy_type, "none"))
8520                 return -ENODEV;
8521
8522         strcpy(np->vpd.phy_type, phy_type);
8523
8524         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8525                 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
8526                         dp->full_name, np->vpd.phy_type);
8527                 return -EINVAL;
8528         }
8529
8530         mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
8531         if (!mac_addr) {
8532                 dev_err(np->device, PFX "%s: OF node lacks "
8533                         "local-mac-address property\n",
8534                         dp->full_name);
8535                 return -EINVAL;
8536         }
8537         if (prop_len != dev->addr_len) {
8538                 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
8539                         "is wrong.\n",
8540                         dp->full_name, prop_len);
8541         }
8542         memcpy(dev->perm_addr, mac_addr, dev->addr_len);
8543         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8544                 int i;
8545
8546                 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
8547                         dp->full_name);
8548                 dev_err(np->device, PFX "%s: [ \n",
8549                         dp->full_name);
8550                 for (i = 0; i < 6; i++)
8551                         printk("%02x ", dev->perm_addr[i]);
8552                 printk("]\n");
8553                 return -EINVAL;
8554         }
8555
8556         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8557
8558         model = of_get_property(dp, "model", &prop_len);
8559
8560         if (model)
8561                 strcpy(np->vpd.model, model);
8562
8563         return 0;
8564 #else
8565         return -EINVAL;
8566 #endif
8567 }
8568
8569 static int __devinit niu_get_invariants(struct niu *np)
8570 {
8571         int err, have_props;
8572         u32 offset;
8573
8574         err = niu_get_of_props(np);
8575         if (err == -ENODEV)
8576                 return err;
8577
8578         have_props = !err;
8579
8580         err = niu_init_mac_ipp_pcs_base(np);
8581         if (err)
8582                 return err;
8583
8584         if (have_props) {
8585                 err = niu_get_and_validate_port(np);
8586                 if (err)
8587                         return err;
8588
8589         } else  {
8590                 if (np->parent->plat_type == PLAT_TYPE_NIU)
8591                         return -EINVAL;
8592
8593                 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
8594                 offset = niu_pci_vpd_offset(np);
8595                 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
8596                        offset);
8597                 if (offset)
8598                         niu_pci_vpd_fetch(np, offset);
8599                 nw64(ESPC_PIO_EN, 0);
8600
8601                 if (np->flags & NIU_FLAGS_VPD_VALID) {
8602                         niu_pci_vpd_validate(np);
8603                         err = niu_get_and_validate_port(np);
8604                         if (err)
8605                                 return err;
8606                 }
8607
8608                 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
8609                         err = niu_get_and_validate_port(np);
8610                         if (err)
8611                                 return err;
8612                         err = niu_pci_probe_sprom(np);
8613                         if (err)
8614                                 return err;
8615                 }
8616         }
8617
8618         err = niu_probe_ports(np);
8619         if (err)
8620                 return err;
8621
8622         niu_ldg_init(np);
8623
8624         niu_classifier_swstate_init(np);
8625         niu_link_config_init(np);
8626
8627         err = niu_determine_phy_disposition(np);
8628         if (!err)
8629                 err = niu_init_link(np);
8630
8631         return err;
8632 }
8633
8634 static LIST_HEAD(niu_parent_list);
8635 static DEFINE_MUTEX(niu_parent_lock);
8636 static int niu_parent_index;
8637
8638 static ssize_t show_port_phy(struct device *dev,
8639                              struct device_attribute *attr, char *buf)
8640 {
8641         struct platform_device *plat_dev = to_platform_device(dev);
8642         struct niu_parent *p = plat_dev->dev.platform_data;
8643         u32 port_phy = p->port_phy;
8644         char *orig_buf = buf;
8645         int i;
8646
8647         if (port_phy == PORT_PHY_UNKNOWN ||
8648             port_phy == PORT_PHY_INVALID)
8649                 return 0;
8650
8651         for (i = 0; i < p->num_ports; i++) {
8652                 const char *type_str;
8653                 int type;
8654
8655                 type = phy_decode(port_phy, i);
8656                 if (type == PORT_TYPE_10G)
8657                         type_str = "10G";
8658                 else
8659                         type_str = "1G";
8660                 buf += sprintf(buf,
8661                                (i == 0) ? "%s" : " %s",
8662                                type_str);
8663         }
8664         buf += sprintf(buf, "\n");
8665         return buf - orig_buf;
8666 }
8667
8668 static ssize_t show_plat_type(struct device *dev,
8669                               struct device_attribute *attr, char *buf)
8670 {
8671         struct platform_device *plat_dev = to_platform_device(dev);
8672         struct niu_parent *p = plat_dev->dev.platform_data;
8673         const char *type_str;
8674
8675         switch (p->plat_type) {
8676         case PLAT_TYPE_ATLAS:
8677                 type_str = "atlas";
8678                 break;
8679         case PLAT_TYPE_NIU:
8680                 type_str = "niu";
8681                 break;
8682         case PLAT_TYPE_VF_P0:
8683                 type_str = "vf_p0";
8684                 break;
8685         case PLAT_TYPE_VF_P1:
8686                 type_str = "vf_p1";
8687                 break;
8688         default:
8689                 type_str = "unknown";
8690                 break;
8691         }
8692
8693         return sprintf(buf, "%s\n", type_str);
8694 }
8695
8696 static ssize_t __show_chan_per_port(struct device *dev,
8697                                     struct device_attribute *attr, char *buf,
8698                                     int rx)
8699 {
8700         struct platform_device *plat_dev = to_platform_device(dev);
8701         struct niu_parent *p = plat_dev->dev.platform_data;
8702         char *orig_buf = buf;
8703         u8 *arr;
8704         int i;
8705
8706         arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
8707
8708         for (i = 0; i < p->num_ports; i++) {
8709                 buf += sprintf(buf,
8710                                (i == 0) ? "%d" : " %d",
8711                                arr[i]);
8712         }
8713         buf += sprintf(buf, "\n");
8714
8715         return buf - orig_buf;
8716 }
8717
8718 static ssize_t show_rxchan_per_port(struct device *dev,
8719                                     struct device_attribute *attr, char *buf)
8720 {
8721         return __show_chan_per_port(dev, attr, buf, 1);
8722 }
8723
8724 static ssize_t show_txchan_per_port(struct device *dev,
8725                                     struct device_attribute *attr, char *buf)
8726 {
8727         return __show_chan_per_port(dev, attr, buf, 1);
8728 }
8729
8730 static ssize_t show_num_ports(struct device *dev,
8731                               struct device_attribute *attr, char *buf)
8732 {
8733         struct platform_device *plat_dev = to_platform_device(dev);
8734         struct niu_parent *p = plat_dev->dev.platform_data;
8735
8736         return sprintf(buf, "%d\n", p->num_ports);
8737 }
8738
8739 static struct device_attribute niu_parent_attributes[] = {
8740         __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
8741         __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
8742         __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
8743         __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
8744         __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
8745         {}
8746 };
8747
8748 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
8749                                                     union niu_parent_id *id,
8750                                                     u8 ptype)
8751 {
8752         struct platform_device *plat_dev;
8753         struct niu_parent *p;
8754         int i;
8755
8756         niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
8757
8758         plat_dev = platform_device_register_simple("niu", niu_parent_index,
8759                                                    NULL, 0);
8760         if (!plat_dev)
8761                 return NULL;
8762
8763         for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
8764                 int err = device_create_file(&plat_dev->dev,
8765                                              &niu_parent_attributes[i]);
8766                 if (err)
8767                         goto fail_unregister;
8768         }
8769
8770         p = kzalloc(sizeof(*p), GFP_KERNEL);
8771         if (!p)
8772                 goto fail_unregister;
8773
8774         p->index = niu_parent_index++;
8775
8776         plat_dev->dev.platform_data = p;
8777         p->plat_dev = plat_dev;
8778
8779         memcpy(&p->id, id, sizeof(*id));
8780         p->plat_type = ptype;
8781         INIT_LIST_HEAD(&p->list);
8782         atomic_set(&p->refcnt, 0);
8783         list_add(&p->list, &niu_parent_list);
8784         spin_lock_init(&p->lock);
8785
8786         p->rxdma_clock_divider = 7500;
8787
8788         p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
8789         if (p->plat_type == PLAT_TYPE_NIU)
8790                 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
8791
8792         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
8793                 int index = i - CLASS_CODE_USER_PROG1;
8794
8795                 p->tcam_key[index] = TCAM_KEY_TSEL;
8796                 p->flow_key[index] = (FLOW_KEY_IPSA |
8797                                       FLOW_KEY_IPDA |
8798                                       FLOW_KEY_PROTO |
8799                                       (FLOW_KEY_L4_BYTE12 <<
8800                                        FLOW_KEY_L4_0_SHIFT) |
8801                                       (FLOW_KEY_L4_BYTE12 <<
8802                                        FLOW_KEY_L4_1_SHIFT));
8803         }
8804
8805         for (i = 0; i < LDN_MAX + 1; i++)
8806                 p->ldg_map[i] = LDG_INVALID;
8807
8808         return p;
8809
8810 fail_unregister:
8811         platform_device_unregister(plat_dev);
8812         return NULL;
8813 }
8814
8815 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
8816                                                     union niu_parent_id *id,
8817                                                     u8 ptype)
8818 {
8819         struct niu_parent *p, *tmp;
8820         int port = np->port;
8821
8822         niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
8823                ptype, port);
8824
8825         mutex_lock(&niu_parent_lock);
8826         p = NULL;
8827         list_for_each_entry(tmp, &niu_parent_list, list) {
8828                 if (!memcmp(id, &tmp->id, sizeof(*id))) {
8829                         p = tmp;
8830                         break;
8831                 }
8832         }
8833         if (!p)
8834                 p = niu_new_parent(np, id, ptype);
8835
8836         if (p) {
8837                 char port_name[6];
8838                 int err;
8839
8840                 sprintf(port_name, "port%d", port);
8841                 err = sysfs_create_link(&p->plat_dev->dev.kobj,
8842                                         &np->device->kobj,
8843                                         port_name);
8844                 if (!err) {
8845                         p->ports[port] = np;
8846                         atomic_inc(&p->refcnt);
8847                 }
8848         }
8849         mutex_unlock(&niu_parent_lock);
8850
8851         return p;
8852 }
8853
8854 static void niu_put_parent(struct niu *np)
8855 {
8856         struct niu_parent *p = np->parent;
8857         u8 port = np->port;
8858         char port_name[6];
8859
8860         BUG_ON(!p || p->ports[port] != np);
8861
8862         niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
8863
8864         sprintf(port_name, "port%d", port);
8865
8866         mutex_lock(&niu_parent_lock);
8867
8868         sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
8869
8870         p->ports[port] = NULL;
8871         np->parent = NULL;
8872
8873         if (atomic_dec_and_test(&p->refcnt)) {
8874                 list_del(&p->list);
8875                 platform_device_unregister(p->plat_dev);
8876         }
8877
8878         mutex_unlock(&niu_parent_lock);
8879 }
8880
8881 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
8882                                     u64 *handle, gfp_t flag)
8883 {
8884         dma_addr_t dh;
8885         void *ret;
8886
8887         ret = dma_alloc_coherent(dev, size, &dh, flag);
8888         if (ret)
8889                 *handle = dh;
8890         return ret;
8891 }
8892
8893 static void niu_pci_free_coherent(struct device *dev, size_t size,
8894                                   void *cpu_addr, u64 handle)
8895 {
8896         dma_free_coherent(dev, size, cpu_addr, handle);
8897 }
8898
8899 static u64 niu_pci_map_page(struct device *dev, struct page *page,
8900                             unsigned long offset, size_t size,
8901                             enum dma_data_direction direction)
8902 {
8903         return dma_map_page(dev, page, offset, size, direction);
8904 }
8905
8906 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
8907                                size_t size, enum dma_data_direction direction)
8908 {
8909         return dma_unmap_page(dev, dma_address, size, direction);
8910 }
8911
8912 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
8913                               size_t size,
8914                               enum dma_data_direction direction)
8915 {
8916         return dma_map_single(dev, cpu_addr, size, direction);
8917 }
8918
8919 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
8920                                  size_t size,
8921                                  enum dma_data_direction direction)
8922 {
8923         dma_unmap_single(dev, dma_address, size, direction);
8924 }
8925
8926 static const struct niu_ops niu_pci_ops = {
8927         .alloc_coherent = niu_pci_alloc_coherent,
8928         .free_coherent  = niu_pci_free_coherent,
8929         .map_page       = niu_pci_map_page,
8930         .unmap_page     = niu_pci_unmap_page,
8931         .map_single     = niu_pci_map_single,
8932         .unmap_single   = niu_pci_unmap_single,
8933 };
8934
8935 static void __devinit niu_driver_version(void)
8936 {
8937         static int niu_version_printed;
8938
8939         if (niu_version_printed++ == 0)
8940                 pr_info("%s", version);
8941 }
8942
8943 static struct net_device * __devinit niu_alloc_and_init(
8944         struct device *gen_dev, struct pci_dev *pdev,
8945         struct of_device *op, const struct niu_ops *ops,
8946         u8 port)
8947 {
8948         struct net_device *dev;
8949         struct niu *np;
8950
8951         dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
8952         if (!dev) {
8953                 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
8954                 return NULL;
8955         }
8956
8957         SET_NETDEV_DEV(dev, gen_dev);
8958
8959         np = netdev_priv(dev);
8960         np->dev = dev;
8961         np->pdev = pdev;
8962         np->op = op;
8963         np->device = gen_dev;
8964         np->ops = ops;
8965
8966         np->msg_enable = niu_debug;
8967
8968         spin_lock_init(&np->lock);
8969         INIT_WORK(&np->reset_task, niu_reset_task);
8970
8971         np->port = port;
8972
8973         return dev;
8974 }
8975
8976 static const struct net_device_ops niu_netdev_ops = {
8977         .ndo_open               = niu_open,
8978         .ndo_stop               = niu_close,
8979         .ndo_start_xmit         = niu_start_xmit,
8980         .ndo_get_stats          = niu_get_stats,
8981         .ndo_set_multicast_list = niu_set_rx_mode,
8982         .ndo_validate_addr      = eth_validate_addr,
8983         .ndo_set_mac_address    = niu_set_mac_addr,
8984         .ndo_do_ioctl           = niu_ioctl,
8985         .ndo_tx_timeout         = niu_tx_timeout,
8986         .ndo_change_mtu         = niu_change_mtu,
8987 };
8988
8989 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
8990 {
8991         dev->netdev_ops = &niu_netdev_ops;
8992         dev->ethtool_ops = &niu_ethtool_ops;
8993         dev->watchdog_timeo = NIU_TX_TIMEOUT;
8994 }
8995
8996 static void __devinit niu_device_announce(struct niu *np)
8997 {
8998         struct net_device *dev = np->dev;
8999
9000         pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9001
9002         if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9003                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9004                                 dev->name,
9005                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9006                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9007                                 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9008                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9009                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9010                                 np->vpd.phy_type);
9011         } else {
9012                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9013                                 dev->name,
9014                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9015                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9016                                 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9017                                  (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9018                                   "COPPER")),
9019                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9020                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9021                                 np->vpd.phy_type);
9022         }
9023 }
9024
9025 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9026                                       const struct pci_device_id *ent)
9027 {
9028         union niu_parent_id parent_id;
9029         struct net_device *dev;
9030         struct niu *np;
9031         int err, pos;
9032         u64 dma_mask;
9033         u16 val16;
9034
9035         niu_driver_version();
9036
9037         err = pci_enable_device(pdev);
9038         if (err) {
9039                 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
9040                         "aborting.\n");
9041                 return err;
9042         }
9043
9044         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9045             !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9046                 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
9047                         "base addresses, aborting.\n");
9048                 err = -ENODEV;
9049                 goto err_out_disable_pdev;
9050         }
9051
9052         err = pci_request_regions(pdev, DRV_MODULE_NAME);
9053         if (err) {
9054                 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
9055                         "aborting.\n");
9056                 goto err_out_disable_pdev;
9057         }
9058
9059         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
9060         if (pos <= 0) {
9061                 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
9062                         "aborting.\n");
9063                 goto err_out_free_res;
9064         }
9065
9066         dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9067                                  &niu_pci_ops, PCI_FUNC(pdev->devfn));
9068         if (!dev) {
9069                 err = -ENOMEM;
9070                 goto err_out_free_res;
9071         }
9072         np = netdev_priv(dev);
9073
9074         memset(&parent_id, 0, sizeof(parent_id));
9075         parent_id.pci.domain = pci_domain_nr(pdev->bus);
9076         parent_id.pci.bus = pdev->bus->number;
9077         parent_id.pci.device = PCI_SLOT(pdev->devfn);
9078
9079         np->parent = niu_get_parent(np, &parent_id,
9080                                     PLAT_TYPE_ATLAS);
9081         if (!np->parent) {
9082                 err = -ENOMEM;
9083                 goto err_out_free_dev;
9084         }
9085
9086         pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9087         val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9088         val16 |= (PCI_EXP_DEVCTL_CERE |
9089                   PCI_EXP_DEVCTL_NFERE |
9090                   PCI_EXP_DEVCTL_FERE |
9091                   PCI_EXP_DEVCTL_URRE |
9092                   PCI_EXP_DEVCTL_RELAX_EN);
9093         pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9094
9095         dma_mask = DMA_44BIT_MASK;
9096         err = pci_set_dma_mask(pdev, dma_mask);
9097         if (!err) {
9098                 dev->features |= NETIF_F_HIGHDMA;
9099                 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9100                 if (err) {
9101                         dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
9102                                 "DMA for consistent allocations, "
9103                                 "aborting.\n");
9104                         goto err_out_release_parent;
9105                 }
9106         }
9107         if (err || dma_mask == DMA_32BIT_MASK) {
9108                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9109                 if (err) {
9110                         dev_err(&pdev->dev, PFX "No usable DMA configuration, "
9111                                 "aborting.\n");
9112                         goto err_out_release_parent;
9113                 }
9114         }
9115
9116         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
9117
9118         np->regs = pci_ioremap_bar(pdev, 0);
9119         if (!np->regs) {
9120                 dev_err(&pdev->dev, PFX "Cannot map device registers, "
9121                         "aborting.\n");
9122                 err = -ENOMEM;
9123                 goto err_out_release_parent;
9124         }
9125
9126         pci_set_master(pdev);
9127         pci_save_state(pdev);
9128
9129         dev->irq = pdev->irq;
9130
9131         niu_assign_netdev_ops(dev);
9132
9133         err = niu_get_invariants(np);
9134         if (err) {
9135                 if (err != -ENODEV)
9136                         dev_err(&pdev->dev, PFX "Problem fetching invariants "
9137                                 "of chip, aborting.\n");
9138                 goto err_out_iounmap;
9139         }
9140
9141         err = register_netdev(dev);
9142         if (err) {
9143                 dev_err(&pdev->dev, PFX "Cannot register net device, "
9144                         "aborting.\n");
9145                 goto err_out_iounmap;
9146         }
9147
9148         pci_set_drvdata(pdev, dev);
9149
9150         niu_device_announce(np);
9151
9152         return 0;
9153
9154 err_out_iounmap:
9155         if (np->regs) {
9156                 iounmap(np->regs);
9157                 np->regs = NULL;
9158         }
9159
9160 err_out_release_parent:
9161         niu_put_parent(np);
9162
9163 err_out_free_dev:
9164         free_netdev(dev);
9165
9166 err_out_free_res:
9167         pci_release_regions(pdev);
9168
9169 err_out_disable_pdev:
9170         pci_disable_device(pdev);
9171         pci_set_drvdata(pdev, NULL);
9172
9173         return err;
9174 }
9175
9176 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9177 {
9178         struct net_device *dev = pci_get_drvdata(pdev);
9179
9180         if (dev) {
9181                 struct niu *np = netdev_priv(dev);
9182
9183                 unregister_netdev(dev);
9184                 if (np->regs) {
9185                         iounmap(np->regs);
9186                         np->regs = NULL;
9187                 }
9188
9189                 niu_ldg_free(np);
9190
9191                 niu_put_parent(np);
9192
9193                 free_netdev(dev);
9194                 pci_release_regions(pdev);
9195                 pci_disable_device(pdev);
9196                 pci_set_drvdata(pdev, NULL);
9197         }
9198 }
9199
9200 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9201 {
9202         struct net_device *dev = pci_get_drvdata(pdev);
9203         struct niu *np = netdev_priv(dev);
9204         unsigned long flags;
9205
9206         if (!netif_running(dev))
9207                 return 0;
9208
9209         flush_scheduled_work();
9210         niu_netif_stop(np);
9211
9212         del_timer_sync(&np->timer);
9213
9214         spin_lock_irqsave(&np->lock, flags);
9215         niu_enable_interrupts(np, 0);
9216         spin_unlock_irqrestore(&np->lock, flags);
9217
9218         netif_device_detach(dev);
9219
9220         spin_lock_irqsave(&np->lock, flags);
9221         niu_stop_hw(np);
9222         spin_unlock_irqrestore(&np->lock, flags);
9223
9224         pci_save_state(pdev);
9225
9226         return 0;
9227 }
9228
9229 static int niu_resume(struct pci_dev *pdev)
9230 {
9231         struct net_device *dev = pci_get_drvdata(pdev);
9232         struct niu *np = netdev_priv(dev);
9233         unsigned long flags;
9234         int err;
9235
9236         if (!netif_running(dev))
9237                 return 0;
9238
9239         pci_restore_state(pdev);
9240
9241         netif_device_attach(dev);
9242
9243         spin_lock_irqsave(&np->lock, flags);
9244
9245         err = niu_init_hw(np);
9246         if (!err) {
9247                 np->timer.expires = jiffies + HZ;
9248                 add_timer(&np->timer);
9249                 niu_netif_start(np);
9250         }
9251
9252         spin_unlock_irqrestore(&np->lock, flags);
9253
9254         return err;
9255 }
9256
9257 static struct pci_driver niu_pci_driver = {
9258         .name           = DRV_MODULE_NAME,
9259         .id_table       = niu_pci_tbl,
9260         .probe          = niu_pci_init_one,
9261         .remove         = __devexit_p(niu_pci_remove_one),
9262         .suspend        = niu_suspend,
9263         .resume         = niu_resume,
9264 };
9265
9266 #ifdef CONFIG_SPARC64
9267 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9268                                      u64 *dma_addr, gfp_t flag)
9269 {
9270         unsigned long order = get_order(size);
9271         unsigned long page = __get_free_pages(flag, order);
9272
9273         if (page == 0UL)
9274                 return NULL;
9275         memset((char *)page, 0, PAGE_SIZE << order);
9276         *dma_addr = __pa(page);
9277
9278         return (void *) page;
9279 }
9280
9281 static void niu_phys_free_coherent(struct device *dev, size_t size,
9282                                    void *cpu_addr, u64 handle)
9283 {
9284         unsigned long order = get_order(size);
9285
9286         free_pages((unsigned long) cpu_addr, order);
9287 }
9288
9289 static u64 niu_phys_map_page(struct device *dev, struct page *page,
9290                              unsigned long offset, size_t size,
9291                              enum dma_data_direction direction)
9292 {
9293         return page_to_phys(page) + offset;
9294 }
9295
9296 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
9297                                 size_t size, enum dma_data_direction direction)
9298 {
9299         /* Nothing to do.  */
9300 }
9301
9302 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
9303                                size_t size,
9304                                enum dma_data_direction direction)
9305 {
9306         return __pa(cpu_addr);
9307 }
9308
9309 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
9310                                   size_t size,
9311                                   enum dma_data_direction direction)
9312 {
9313         /* Nothing to do.  */
9314 }
9315
9316 static const struct niu_ops niu_phys_ops = {
9317         .alloc_coherent = niu_phys_alloc_coherent,
9318         .free_coherent  = niu_phys_free_coherent,
9319         .map_page       = niu_phys_map_page,
9320         .unmap_page     = niu_phys_unmap_page,
9321         .map_single     = niu_phys_map_single,
9322         .unmap_single   = niu_phys_unmap_single,
9323 };
9324
9325 static unsigned long res_size(struct resource *r)
9326 {
9327         return r->end - r->start + 1UL;
9328 }
9329
9330 static int __devinit niu_of_probe(struct of_device *op,
9331                                   const struct of_device_id *match)
9332 {
9333         union niu_parent_id parent_id;
9334         struct net_device *dev;
9335         struct niu *np;
9336         const u32 *reg;
9337         int err;
9338
9339         niu_driver_version();
9340
9341         reg = of_get_property(op->node, "reg", NULL);
9342         if (!reg) {
9343                 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
9344                         op->node->full_name);
9345                 return -ENODEV;
9346         }
9347
9348         dev = niu_alloc_and_init(&op->dev, NULL, op,
9349                                  &niu_phys_ops, reg[0] & 0x1);
9350         if (!dev) {
9351                 err = -ENOMEM;
9352                 goto err_out;
9353         }
9354         np = netdev_priv(dev);
9355
9356         memset(&parent_id, 0, sizeof(parent_id));
9357         parent_id.of = of_get_parent(op->node);
9358
9359         np->parent = niu_get_parent(np, &parent_id,
9360                                     PLAT_TYPE_NIU);
9361         if (!np->parent) {
9362                 err = -ENOMEM;
9363                 goto err_out_free_dev;
9364         }
9365
9366         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
9367
9368         np->regs = of_ioremap(&op->resource[1], 0,
9369                               res_size(&op->resource[1]),
9370                               "niu regs");
9371         if (!np->regs) {
9372                 dev_err(&op->dev, PFX "Cannot map device registers, "
9373                         "aborting.\n");
9374                 err = -ENOMEM;
9375                 goto err_out_release_parent;
9376         }
9377
9378         np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
9379                                     res_size(&op->resource[2]),
9380                                     "niu vregs-1");
9381         if (!np->vir_regs_1) {
9382                 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
9383                         "aborting.\n");
9384                 err = -ENOMEM;
9385                 goto err_out_iounmap;
9386         }
9387
9388         np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
9389                                     res_size(&op->resource[3]),
9390                                     "niu vregs-2");
9391         if (!np->vir_regs_2) {
9392                 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
9393                         "aborting.\n");
9394                 err = -ENOMEM;
9395                 goto err_out_iounmap;
9396         }
9397
9398         niu_assign_netdev_ops(dev);
9399
9400         err = niu_get_invariants(np);
9401         if (err) {
9402                 if (err != -ENODEV)
9403                         dev_err(&op->dev, PFX "Problem fetching invariants "
9404                                 "of chip, aborting.\n");
9405                 goto err_out_iounmap;
9406         }
9407
9408         err = register_netdev(dev);
9409         if (err) {
9410                 dev_err(&op->dev, PFX "Cannot register net device, "
9411                         "aborting.\n");
9412                 goto err_out_iounmap;
9413         }
9414
9415         dev_set_drvdata(&op->dev, dev);
9416
9417         niu_device_announce(np);
9418
9419         return 0;
9420
9421 err_out_iounmap:
9422         if (np->vir_regs_1) {
9423                 of_iounmap(&op->resource[2], np->vir_regs_1,
9424                            res_size(&op->resource[2]));
9425                 np->vir_regs_1 = NULL;
9426         }
9427
9428         if (np->vir_regs_2) {
9429                 of_iounmap(&op->resource[3], np->vir_regs_2,
9430                            res_size(&op->resource[3]));
9431                 np->vir_regs_2 = NULL;
9432         }
9433
9434         if (np->regs) {
9435                 of_iounmap(&op->resource[1], np->regs,
9436                            res_size(&op->resource[1]));
9437                 np->regs = NULL;
9438         }
9439
9440 err_out_release_parent:
9441         niu_put_parent(np);
9442
9443 err_out_free_dev:
9444         free_netdev(dev);
9445
9446 err_out:
9447         return err;
9448 }
9449
9450 static int __devexit niu_of_remove(struct of_device *op)
9451 {
9452         struct net_device *dev = dev_get_drvdata(&op->dev);
9453
9454         if (dev) {
9455                 struct niu *np = netdev_priv(dev);
9456
9457                 unregister_netdev(dev);
9458
9459                 if (np->vir_regs_1) {
9460                         of_iounmap(&op->resource[2], np->vir_regs_1,
9461                                    res_size(&op->resource[2]));
9462                         np->vir_regs_1 = NULL;
9463                 }
9464
9465                 if (np->vir_regs_2) {
9466                         of_iounmap(&op->resource[3], np->vir_regs_2,
9467                                    res_size(&op->resource[3]));
9468                         np->vir_regs_2 = NULL;
9469                 }
9470
9471                 if (np->regs) {
9472                         of_iounmap(&op->resource[1], np->regs,
9473                                    res_size(&op->resource[1]));
9474                         np->regs = NULL;
9475                 }
9476
9477                 niu_ldg_free(np);
9478
9479                 niu_put_parent(np);
9480
9481                 free_netdev(dev);
9482                 dev_set_drvdata(&op->dev, NULL);
9483         }
9484         return 0;
9485 }
9486
9487 static const struct of_device_id niu_match[] = {
9488         {
9489                 .name = "network",
9490                 .compatible = "SUNW,niusl",
9491         },
9492         {},
9493 };
9494 MODULE_DEVICE_TABLE(of, niu_match);
9495
9496 static struct of_platform_driver niu_of_driver = {
9497         .name           = "niu",
9498         .match_table    = niu_match,
9499         .probe          = niu_of_probe,
9500         .remove         = __devexit_p(niu_of_remove),
9501 };
9502
9503 #endif /* CONFIG_SPARC64 */
9504
9505 static int __init niu_init(void)
9506 {
9507         int err = 0;
9508
9509         BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
9510
9511         niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
9512
9513 #ifdef CONFIG_SPARC64
9514         err = of_register_driver(&niu_of_driver, &of_bus_type);
9515 #endif
9516
9517         if (!err) {
9518                 err = pci_register_driver(&niu_pci_driver);
9519 #ifdef CONFIG_SPARC64
9520                 if (err)
9521                         of_unregister_driver(&niu_of_driver);
9522 #endif
9523         }
9524
9525         return err;
9526 }
9527
9528 static void __exit niu_exit(void)
9529 {
9530         pci_unregister_driver(&niu_pci_driver);
9531 #ifdef CONFIG_SPARC64
9532         of_unregister_driver(&niu_of_driver);
9533 #endif
9534 }
9535
9536 module_init(niu_init);
9537 module_exit(niu_exit);