[SKY2]: fix power settings on Yukon XL
[linux-2.6] / drivers / net / niu.c
1 /* niu.c: Neptune ethernet driver.
2  *
3  * Copyright (C) 2007 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      "0.5"
37 #define DRV_MODULE_RELDATE      "October 5, 2007"
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 + 0x4UL) << 32) |
55                 (u64)readl(reg));
56 }
57
58 static void writeq(u64 val, void __iomem *reg)
59 {
60         writel(val & 0xffffffff, reg);
61         writel(val >> 32, reg + 0x4UL);
62 }
63 #endif
64
65 static struct pci_device_id niu_pci_tbl[] = {
66         {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
67         {}
68 };
69
70 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
71
72 #define NIU_TX_TIMEOUT                  (5 * HZ)
73
74 #define nr64(reg)               readq(np->regs + (reg))
75 #define nw64(reg, val)          writeq((val), np->regs + (reg))
76
77 #define nr64_mac(reg)           readq(np->mac_regs + (reg))
78 #define nw64_mac(reg, val)      writeq((val), np->mac_regs + (reg))
79
80 #define nr64_ipp(reg)           readq(np->regs + np->ipp_off + (reg))
81 #define nw64_ipp(reg, val)      writeq((val), np->regs + np->ipp_off + (reg))
82
83 #define nr64_pcs(reg)           readq(np->regs + np->pcs_off + (reg))
84 #define nw64_pcs(reg, val)      writeq((val), np->regs + np->pcs_off + (reg))
85
86 #define nr64_xpcs(reg)          readq(np->regs + np->xpcs_off + (reg))
87 #define nw64_xpcs(reg, val)     writeq((val), np->regs + np->xpcs_off + (reg))
88
89 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
90
91 static int niu_debug;
92 static int debug = -1;
93 module_param(debug, int, 0);
94 MODULE_PARM_DESC(debug, "NIU debug level");
95
96 #define niudbg(TYPE, f, a...) \
97 do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
98                 printk(KERN_DEBUG PFX f, ## a); \
99 } while (0)
100
101 #define niuinfo(TYPE, f, a...) \
102 do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
103                 printk(KERN_INFO PFX f, ## a); \
104 } while (0)
105
106 #define niuwarn(TYPE, f, a...) \
107 do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
108                 printk(KERN_WARNING PFX f, ## a); \
109 } while (0)
110
111 #define niu_lock_parent(np, flags) \
112         spin_lock_irqsave(&np->parent->lock, flags)
113 #define niu_unlock_parent(np, flags) \
114         spin_unlock_irqrestore(&np->parent->lock, flags)
115
116 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
117                                      u64 bits, int limit, int delay)
118 {
119         while (--limit >= 0) {
120                 u64 val = nr64_mac(reg);
121
122                 if (!(val & bits))
123                         break;
124                 udelay(delay);
125         }
126         if (limit < 0)
127                 return -ENODEV;
128         return 0;
129 }
130
131 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
132                                         u64 bits, int limit, int delay,
133                                         const char *reg_name)
134 {
135         int err;
136
137         nw64_mac(reg, bits);
138         err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
139         if (err)
140                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
141                         "would not clear, val[%llx]\n",
142                         np->dev->name, (unsigned long long) bits, reg_name,
143                         (unsigned long long) nr64_mac(reg));
144         return err;
145 }
146
147 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
148 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
149         __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
150 })
151
152 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
153                                      u64 bits, int limit, int delay)
154 {
155         while (--limit >= 0) {
156                 u64 val = nr64_ipp(reg);
157
158                 if (!(val & bits))
159                         break;
160                 udelay(delay);
161         }
162         if (limit < 0)
163                 return -ENODEV;
164         return 0;
165 }
166
167 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
168                                         u64 bits, int limit, int delay,
169                                         const char *reg_name)
170 {
171         int err;
172         u64 val;
173
174         val = nr64_ipp(reg);
175         val |= bits;
176         nw64_ipp(reg, val);
177
178         err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
179         if (err)
180                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
181                         "would not clear, val[%llx]\n",
182                         np->dev->name, (unsigned long long) bits, reg_name,
183                         (unsigned long long) nr64_ipp(reg));
184         return err;
185 }
186
187 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
188 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
189         __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
190 })
191
192 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
193                                  u64 bits, int limit, int delay)
194 {
195         while (--limit >= 0) {
196                 u64 val = nr64(reg);
197
198                 if (!(val & bits))
199                         break;
200                 udelay(delay);
201         }
202         if (limit < 0)
203                 return -ENODEV;
204         return 0;
205 }
206
207 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
208 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
209         __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
210 })
211
212 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
213                                     u64 bits, int limit, int delay,
214                                     const char *reg_name)
215 {
216         int err;
217
218         nw64(reg, bits);
219         err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
220         if (err)
221                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
222                         "would not clear, val[%llx]\n",
223                         np->dev->name, (unsigned long long) bits, reg_name,
224                         (unsigned long long) nr64(reg));
225         return err;
226 }
227
228 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
229 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
230         __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
231 })
232
233 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
234 {
235         u64 val = (u64) lp->timer;
236
237         if (on)
238                 val |= LDG_IMGMT_ARM;
239
240         nw64(LDG_IMGMT(lp->ldg_num), val);
241 }
242
243 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
244 {
245         unsigned long mask_reg, bits;
246         u64 val;
247
248         if (ldn < 0 || ldn > LDN_MAX)
249                 return -EINVAL;
250
251         if (ldn < 64) {
252                 mask_reg = LD_IM0(ldn);
253                 bits = LD_IM0_MASK;
254         } else {
255                 mask_reg = LD_IM1(ldn - 64);
256                 bits = LD_IM1_MASK;
257         }
258
259         val = nr64(mask_reg);
260         if (on)
261                 val &= ~bits;
262         else
263                 val |= bits;
264         nw64(mask_reg, val);
265
266         return 0;
267 }
268
269 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
270 {
271         struct niu_parent *parent = np->parent;
272         int i;
273
274         for (i = 0; i <= LDN_MAX; i++) {
275                 int err;
276
277                 if (parent->ldg_map[i] != lp->ldg_num)
278                         continue;
279
280                 err = niu_ldn_irq_enable(np, i, on);
281                 if (err)
282                         return err;
283         }
284         return 0;
285 }
286
287 static int niu_enable_interrupts(struct niu *np, int on)
288 {
289         int i;
290
291         for (i = 0; i < np->num_ldg; i++) {
292                 struct niu_ldg *lp = &np->ldg[i];
293                 int err;
294
295                 err = niu_enable_ldn_in_ldg(np, lp, on);
296                 if (err)
297                         return err;
298         }
299         for (i = 0; i < np->num_ldg; i++)
300                 niu_ldg_rearm(np, &np->ldg[i], on);
301
302         return 0;
303 }
304
305 static u32 phy_encode(u32 type, int port)
306 {
307         return (type << (port * 2));
308 }
309
310 static u32 phy_decode(u32 val, int port)
311 {
312         return (val >> (port * 2)) & PORT_TYPE_MASK;
313 }
314
315 static int mdio_wait(struct niu *np)
316 {
317         int limit = 1000;
318         u64 val;
319
320         while (--limit > 0) {
321                 val = nr64(MIF_FRAME_OUTPUT);
322                 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
323                         return val & MIF_FRAME_OUTPUT_DATA;
324
325                 udelay(10);
326         }
327
328         return -ENODEV;
329 }
330
331 static int mdio_read(struct niu *np, int port, int dev, int reg)
332 {
333         int err;
334
335         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
336         err = mdio_wait(np);
337         if (err < 0)
338                 return err;
339
340         nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
341         return mdio_wait(np);
342 }
343
344 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
345 {
346         int err;
347
348         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
349         err = mdio_wait(np);
350         if (err < 0)
351                 return err;
352
353         nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
354         err = mdio_wait(np);
355         if (err < 0)
356                 return err;
357
358         return 0;
359 }
360
361 static int mii_read(struct niu *np, int port, int reg)
362 {
363         nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
364         return mdio_wait(np);
365 }
366
367 static int mii_write(struct niu *np, int port, int reg, int data)
368 {
369         int err;
370
371         nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
372         err = mdio_wait(np);
373         if (err < 0)
374                 return err;
375
376         return 0;
377 }
378
379 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
380 {
381         int err;
382
383         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
384                          ESR2_TI_PLL_TX_CFG_L(channel),
385                          val & 0xffff);
386         if (!err)
387                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
388                                  ESR2_TI_PLL_TX_CFG_H(channel),
389                                  val >> 16);
390         return err;
391 }
392
393 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
394 {
395         int err;
396
397         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
398                          ESR2_TI_PLL_RX_CFG_L(channel),
399                          val & 0xffff);
400         if (!err)
401                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
402                                  ESR2_TI_PLL_RX_CFG_H(channel),
403                                  val >> 16);
404         return err;
405 }
406
407 /* Mode is always 10G fiber.  */
408 static int serdes_init_niu(struct niu *np)
409 {
410         struct niu_link_config *lp = &np->link_config;
411         u32 tx_cfg, rx_cfg;
412         unsigned long i;
413
414         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
415         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
416                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
417                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
418
419         if (lp->loopback_mode == LOOPBACK_PHY) {
420                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
421
422                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
423                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
424
425                 tx_cfg |= PLL_TX_CFG_ENTEST;
426                 rx_cfg |= PLL_RX_CFG_ENTEST;
427         }
428
429         /* Initialize all 4 lanes of the SERDES.  */
430         for (i = 0; i < 4; i++) {
431                 int err = esr2_set_tx_cfg(np, i, tx_cfg);
432                 if (err)
433                         return err;
434         }
435
436         for (i = 0; i < 4; i++) {
437                 int err = esr2_set_rx_cfg(np, i, rx_cfg);
438                 if (err)
439                         return err;
440         }
441
442         return 0;
443 }
444
445 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
446 {
447         int err;
448
449         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
450         if (err >= 0) {
451                 *val = (err & 0xffff);
452                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
453                                 ESR_RXTX_CTRL_H(chan));
454                 if (err >= 0)
455                         *val |= ((err & 0xffff) << 16);
456                 err = 0;
457         }
458         return err;
459 }
460
461 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
462 {
463         int err;
464
465         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
466                         ESR_GLUE_CTRL0_L(chan));
467         if (err >= 0) {
468                 *val = (err & 0xffff);
469                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
470                                 ESR_GLUE_CTRL0_H(chan));
471                 if (err >= 0) {
472                         *val |= ((err & 0xffff) << 16);
473                         err = 0;
474                 }
475         }
476         return err;
477 }
478
479 static int esr_read_reset(struct niu *np, u32 *val)
480 {
481         int err;
482
483         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
484                         ESR_RXTX_RESET_CTRL_L);
485         if (err >= 0) {
486                 *val = (err & 0xffff);
487                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
488                                 ESR_RXTX_RESET_CTRL_H);
489                 if (err >= 0) {
490                         *val |= ((err & 0xffff) << 16);
491                         err = 0;
492                 }
493         }
494         return err;
495 }
496
497 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
498 {
499         int err;
500
501         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
502                          ESR_RXTX_CTRL_L(chan), val & 0xffff);
503         if (!err)
504                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
505                                  ESR_RXTX_CTRL_H(chan), (val >> 16));
506         return err;
507 }
508
509 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
510 {
511         int err;
512
513         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
514                         ESR_GLUE_CTRL0_L(chan), val & 0xffff);
515         if (!err)
516                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
517                                  ESR_GLUE_CTRL0_H(chan), (val >> 16));
518         return err;
519 }
520
521 static int esr_reset(struct niu *np)
522 {
523         u32 reset;
524         int err;
525
526         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
527                          ESR_RXTX_RESET_CTRL_L, 0x0000);
528         if (err)
529                 return err;
530         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
531                          ESR_RXTX_RESET_CTRL_H, 0xffff);
532         if (err)
533                 return err;
534         udelay(200);
535
536         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
537                          ESR_RXTX_RESET_CTRL_L, 0xffff);
538         if (err)
539                 return err;
540         udelay(200);
541
542         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
543                          ESR_RXTX_RESET_CTRL_H, 0x0000);
544         if (err)
545                 return err;
546         udelay(200);
547
548         err = esr_read_reset(np, &reset);
549         if (err)
550                 return err;
551         if (reset != 0) {
552                 dev_err(np->device, PFX "Port %u ESR_RESET "
553                         "did not clear [%08x]\n",
554                         np->port, reset);
555                 return -ENODEV;
556         }
557
558         return 0;
559 }
560
561 static int serdes_init_10g(struct niu *np)
562 {
563         struct niu_link_config *lp = &np->link_config;
564         unsigned long ctrl_reg, test_cfg_reg, i;
565         u64 ctrl_val, test_cfg_val, sig, mask, val;
566         int err;
567
568         switch (np->port) {
569         case 0:
570                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
571                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
572                 break;
573         case 1:
574                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
575                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
576                 break;
577
578         default:
579                 return -EINVAL;
580         }
581         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
582                     ENET_SERDES_CTRL_SDET_1 |
583                     ENET_SERDES_CTRL_SDET_2 |
584                     ENET_SERDES_CTRL_SDET_3 |
585                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
586                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
587                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
588                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
589                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
590                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
591                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
592                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
593         test_cfg_val = 0;
594
595         if (lp->loopback_mode == LOOPBACK_PHY) {
596                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
597                                   ENET_SERDES_TEST_MD_0_SHIFT) |
598                                  (ENET_TEST_MD_PAD_LOOPBACK <<
599                                   ENET_SERDES_TEST_MD_1_SHIFT) |
600                                  (ENET_TEST_MD_PAD_LOOPBACK <<
601                                   ENET_SERDES_TEST_MD_2_SHIFT) |
602                                  (ENET_TEST_MD_PAD_LOOPBACK <<
603                                   ENET_SERDES_TEST_MD_3_SHIFT));
604         }
605
606         nw64(ctrl_reg, ctrl_val);
607         nw64(test_cfg_reg, test_cfg_val);
608
609         /* Initialize all 4 lanes of the SERDES.  */
610         for (i = 0; i < 4; i++) {
611                 u32 rxtx_ctrl, glue0;
612
613                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
614                 if (err)
615                         return err;
616                 err = esr_read_glue0(np, i, &glue0);
617                 if (err)
618                         return err;
619
620                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
621                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
622                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
623
624                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
625                            ESR_GLUE_CTRL0_THCNT |
626                            ESR_GLUE_CTRL0_BLTIME);
627                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
628                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
629                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
630                           (BLTIME_300_CYCLES <<
631                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
632
633                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
634                 if (err)
635                         return err;
636                 err = esr_write_glue0(np, i, glue0);
637                 if (err)
638                         return err;
639         }
640
641         err = esr_reset(np);
642         if (err)
643                 return err;
644
645         sig = nr64(ESR_INT_SIGNALS);
646         switch (np->port) {
647         case 0:
648                 mask = ESR_INT_SIGNALS_P0_BITS;
649                 val = (ESR_INT_SRDY0_P0 |
650                        ESR_INT_DET0_P0 |
651                        ESR_INT_XSRDY_P0 |
652                        ESR_INT_XDP_P0_CH3 |
653                        ESR_INT_XDP_P0_CH2 |
654                        ESR_INT_XDP_P0_CH1 |
655                        ESR_INT_XDP_P0_CH0);
656                 break;
657
658         case 1:
659                 mask = ESR_INT_SIGNALS_P1_BITS;
660                 val = (ESR_INT_SRDY0_P1 |
661                        ESR_INT_DET0_P1 |
662                        ESR_INT_XSRDY_P1 |
663                        ESR_INT_XDP_P1_CH3 |
664                        ESR_INT_XDP_P1_CH2 |
665                        ESR_INT_XDP_P1_CH1 |
666                        ESR_INT_XDP_P1_CH0);
667                 break;
668
669         default:
670                 return -EINVAL;
671         }
672
673         if ((sig & mask) != val) {
674                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
675                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
676                 return -ENODEV;
677         }
678
679         return 0;
680 }
681
682 static int serdes_init_1g(struct niu *np)
683 {
684         u64 val;
685
686         val = nr64(ENET_SERDES_1_PLL_CFG);
687         val &= ~ENET_SERDES_PLL_FBDIV2;
688         switch (np->port) {
689         case 0:
690                 val |= ENET_SERDES_PLL_HRATE0;
691                 break;
692         case 1:
693                 val |= ENET_SERDES_PLL_HRATE1;
694                 break;
695         case 2:
696                 val |= ENET_SERDES_PLL_HRATE2;
697                 break;
698         case 3:
699                 val |= ENET_SERDES_PLL_HRATE3;
700                 break;
701         default:
702                 return -EINVAL;
703         }
704         nw64(ENET_SERDES_1_PLL_CFG, val);
705
706         return 0;
707 }
708
709 static int bcm8704_reset(struct niu *np)
710 {
711         int err, limit;
712
713         err = mdio_read(np, np->phy_addr,
714                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
715         if (err < 0)
716                 return err;
717         err |= BMCR_RESET;
718         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
719                          MII_BMCR, err);
720         if (err)
721                 return err;
722
723         limit = 1000;
724         while (--limit >= 0) {
725                 err = mdio_read(np, np->phy_addr,
726                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
727                 if (err < 0)
728                         return err;
729                 if (!(err & BMCR_RESET))
730                         break;
731         }
732         if (limit < 0) {
733                 dev_err(np->device, PFX "Port %u PHY will not reset "
734                         "(bmcr=%04x)\n", np->port, (err & 0xffff));
735                 return -ENODEV;
736         }
737         return 0;
738 }
739
740 /* When written, certain PHY registers need to be read back twice
741  * in order for the bits to settle properly.
742  */
743 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
744 {
745         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
746         if (err < 0)
747                 return err;
748         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
749         if (err < 0)
750                 return err;
751         return 0;
752 }
753
754 static int bcm8704_init_user_dev3(struct niu *np)
755 {
756         int err;
757
758         err = mdio_write(np, np->phy_addr,
759                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
760                          (USER_CONTROL_OPTXRST_LVL |
761                           USER_CONTROL_OPBIASFLT_LVL |
762                           USER_CONTROL_OBTMPFLT_LVL |
763                           USER_CONTROL_OPPRFLT_LVL |
764                           USER_CONTROL_OPTXFLT_LVL |
765                           USER_CONTROL_OPRXLOS_LVL |
766                           USER_CONTROL_OPRXFLT_LVL |
767                           USER_CONTROL_OPTXON_LVL |
768                           (0x3f << USER_CONTROL_RES1_SHIFT)));
769         if (err)
770                 return err;
771
772         err = mdio_write(np, np->phy_addr,
773                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
774                          (USER_PMD_TX_CTL_XFP_CLKEN |
775                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
776                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
777                           USER_PMD_TX_CTL_TSCK_LPWREN));
778         if (err)
779                 return err;
780
781         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
782         if (err)
783                 return err;
784         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
785         if (err)
786                 return err;
787
788         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
789                         BCM8704_USER_OPT_DIGITAL_CTRL);
790         if (err < 0)
791                 return err;
792         err &= ~USER_ODIG_CTRL_GPIOS;
793         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
794         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
795                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
796         if (err)
797                 return err;
798
799         mdelay(1000);
800
801         return 0;
802 }
803
804 static int xcvr_init_10g(struct niu *np)
805 {
806         struct niu_link_config *lp = &np->link_config;
807         u16 analog_stat0, tx_alarm_status;
808         int err;
809         u64 val;
810
811         val = nr64_mac(XMAC_CONFIG);
812         val &= ~XMAC_CONFIG_LED_POLARITY;
813         val |= XMAC_CONFIG_FORCE_LED_ON;
814         nw64_mac(XMAC_CONFIG, val);
815
816         /* XXX shared resource, lock parent XXX */
817         val = nr64(MIF_CONFIG);
818         val |= MIF_CONFIG_INDIRECT_MODE;
819         nw64(MIF_CONFIG, val);
820
821         err = bcm8704_reset(np);
822         if (err)
823                 return err;
824
825         err = bcm8704_init_user_dev3(np);
826         if (err)
827                 return err;
828
829         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
830                         MII_BMCR);
831         if (err < 0)
832                 return err;
833         err &= ~BMCR_LOOPBACK;
834
835         if (lp->loopback_mode == LOOPBACK_MAC)
836                 err |= BMCR_LOOPBACK;
837
838         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
839                          MII_BMCR, err);
840         if (err)
841                 return err;
842
843 #if 1
844         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
845                         MII_STAT1000);
846         if (err < 0)
847                 return err;
848         pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
849                 np->port, err);
850
851         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
852         if (err < 0)
853                 return err;
854         pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
855                 np->port, err);
856
857         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
858                         MII_NWAYTEST);
859         if (err < 0)
860                 return err;
861         pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
862                 np->port, err);
863 #endif
864
865         /* XXX dig this out it might not be so useful XXX */
866         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
867                         BCM8704_USER_ANALOG_STATUS0);
868         if (err < 0)
869                 return err;
870         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
871                         BCM8704_USER_ANALOG_STATUS0);
872         if (err < 0)
873                 return err;
874         analog_stat0 = err;
875
876         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
877                         BCM8704_USER_TX_ALARM_STATUS);
878         if (err < 0)
879                 return err;
880         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
881                         BCM8704_USER_TX_ALARM_STATUS);
882         if (err < 0)
883                 return err;
884         tx_alarm_status = err;
885
886         if (analog_stat0 != 0x03fc) {
887                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
888                         pr_info(PFX "Port %u cable not connected "
889                                 "or bad cable.\n", np->port);
890                 } else if (analog_stat0 == 0x639c) {
891                         pr_info(PFX "Port %u optical module is bad "
892                                 "or missing.\n", np->port);
893                 }
894         }
895
896         return 0;
897 }
898
899 static int mii_reset(struct niu *np)
900 {
901         int limit, err;
902
903         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
904         if (err)
905                 return err;
906
907         limit = 1000;
908         while (--limit >= 0) {
909                 udelay(500);
910                 err = mii_read(np, np->phy_addr, MII_BMCR);
911                 if (err < 0)
912                         return err;
913                 if (!(err & BMCR_RESET))
914                         break;
915         }
916         if (limit < 0) {
917                 dev_err(np->device, PFX "Port %u MII would not reset, "
918                         "bmcr[%04x]\n", np->port, err);
919                 return -ENODEV;
920         }
921
922         return 0;
923 }
924
925 static int mii_init_common(struct niu *np)
926 {
927         struct niu_link_config *lp = &np->link_config;
928         u16 bmcr, bmsr, adv, estat;
929         int err;
930
931         err = mii_reset(np);
932         if (err)
933                 return err;
934
935         err = mii_read(np, np->phy_addr, MII_BMSR);
936         if (err < 0)
937                 return err;
938         bmsr = err;
939
940         estat = 0;
941         if (bmsr & BMSR_ESTATEN) {
942                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
943                 if (err < 0)
944                         return err;
945                 estat = err;
946         }
947
948         bmcr = 0;
949         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
950         if (err)
951                 return err;
952
953         if (lp->loopback_mode == LOOPBACK_MAC) {
954                 bmcr |= BMCR_LOOPBACK;
955                 if (lp->active_speed == SPEED_1000)
956                         bmcr |= BMCR_SPEED1000;
957                 if (lp->active_duplex == DUPLEX_FULL)
958                         bmcr |= BMCR_FULLDPLX;
959         }
960
961         if (lp->loopback_mode == LOOPBACK_PHY) {
962                 u16 aux;
963
964                 aux = (BCM5464R_AUX_CTL_EXT_LB |
965                        BCM5464R_AUX_CTL_WRITE_1);
966                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
967                 if (err)
968                         return err;
969         }
970
971         /* XXX configurable XXX */
972         /* XXX for now don't advertise half-duplex or asym pause... XXX */
973         adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
974         if (bmsr & BMSR_10FULL)
975                 adv |= ADVERTISE_10FULL;
976         if (bmsr & BMSR_100FULL)
977                 adv |= ADVERTISE_100FULL;
978         err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
979         if (err)
980                 return err;
981
982         if (bmsr & BMSR_ESTATEN) {
983                 u16 ctrl1000 = 0;
984
985                 if (estat & ESTATUS_1000_TFULL)
986                         ctrl1000 |= ADVERTISE_1000FULL;
987                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
988                 if (err)
989                         return err;
990         }
991         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
992
993         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
994         if (err)
995                 return err;
996
997         err = mii_read(np, np->phy_addr, MII_BMCR);
998         if (err < 0)
999                 return err;
1000         err = mii_read(np, np->phy_addr, MII_BMSR);
1001         if (err < 0)
1002                 return err;
1003 #if 0
1004         pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1005                 np->port, bmcr, bmsr);
1006 #endif
1007
1008         return 0;
1009 }
1010
1011 static int xcvr_init_1g(struct niu *np)
1012 {
1013         u64 val;
1014
1015         /* XXX shared resource, lock parent XXX */
1016         val = nr64(MIF_CONFIG);
1017         val &= ~MIF_CONFIG_INDIRECT_MODE;
1018         nw64(MIF_CONFIG, val);
1019
1020         return mii_init_common(np);
1021 }
1022
1023 static int niu_xcvr_init(struct niu *np)
1024 {
1025         const struct niu_phy_ops *ops = np->phy_ops;
1026         int err;
1027
1028         err = 0;
1029         if (ops->xcvr_init)
1030                 err = ops->xcvr_init(np);
1031
1032         return err;
1033 }
1034
1035 static int niu_serdes_init(struct niu *np)
1036 {
1037         const struct niu_phy_ops *ops = np->phy_ops;
1038         int err;
1039
1040         err = 0;
1041         if (ops->serdes_init)
1042                 err = ops->serdes_init(np);
1043
1044         return err;
1045 }
1046
1047 static void niu_init_xif(struct niu *);
1048
1049 static int niu_link_status_common(struct niu *np, int link_up)
1050 {
1051         struct niu_link_config *lp = &np->link_config;
1052         struct net_device *dev = np->dev;
1053         unsigned long flags;
1054
1055         if (!netif_carrier_ok(dev) && link_up) {
1056                 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1057                        dev->name,
1058                        (lp->active_speed == SPEED_10000 ?
1059                         "10Gb/sec" :
1060                         (lp->active_speed == SPEED_1000 ?
1061                          "1Gb/sec" :
1062                          (lp->active_speed == SPEED_100 ?
1063                           "100Mbit/sec" : "10Mbit/sec"))),
1064                        (lp->active_duplex == DUPLEX_FULL ?
1065                         "full" : "half"));
1066
1067                 spin_lock_irqsave(&np->lock, flags);
1068                 niu_init_xif(np);
1069                 spin_unlock_irqrestore(&np->lock, flags);
1070
1071                 netif_carrier_on(dev);
1072         } else if (netif_carrier_ok(dev) && !link_up) {
1073                 niuwarn(LINK, "%s: Link is down\n", dev->name);
1074                 netif_carrier_off(dev);
1075         }
1076
1077         return 0;
1078 }
1079
1080 static int link_status_10g(struct niu *np, int *link_up_p)
1081 {
1082         unsigned long flags;
1083         int err, link_up;
1084
1085         link_up = 0;
1086
1087         spin_lock_irqsave(&np->lock, flags);
1088
1089         err = -EINVAL;
1090         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1091                 goto out;
1092
1093         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1094                         BCM8704_PMD_RCV_SIGDET);
1095         if (err < 0)
1096                 goto out;
1097         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1098                 err = 0;
1099                 goto out;
1100         }
1101
1102         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1103                         BCM8704_PCS_10G_R_STATUS);
1104         if (err < 0)
1105                 goto out;
1106         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1107                 err = 0;
1108                 goto out;
1109         }
1110
1111         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1112                         BCM8704_PHYXS_XGXS_LANE_STAT);
1113         if (err < 0)
1114                 goto out;
1115
1116         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1117                     PHYXS_XGXS_LANE_STAT_MAGIC |
1118                     PHYXS_XGXS_LANE_STAT_LANE3 |
1119                     PHYXS_XGXS_LANE_STAT_LANE2 |
1120                     PHYXS_XGXS_LANE_STAT_LANE1 |
1121                     PHYXS_XGXS_LANE_STAT_LANE0)) {
1122                 err = 0;
1123                 goto out;
1124         }
1125
1126         link_up = 1;
1127         np->link_config.active_speed = SPEED_10000;
1128         np->link_config.active_duplex = DUPLEX_FULL;
1129         err = 0;
1130
1131 out:
1132         spin_unlock_irqrestore(&np->lock, flags);
1133
1134         *link_up_p = link_up;
1135         return err;
1136 }
1137
1138 static int link_status_1g(struct niu *np, int *link_up_p)
1139 {
1140         u16 current_speed, bmsr;
1141         unsigned long flags;
1142         u8 current_duplex;
1143         int err, link_up;
1144
1145         link_up = 0;
1146         current_speed = SPEED_INVALID;
1147         current_duplex = DUPLEX_INVALID;
1148
1149         spin_lock_irqsave(&np->lock, flags);
1150
1151         err = -EINVAL;
1152         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1153                 goto out;
1154
1155         err = mii_read(np, np->phy_addr, MII_BMSR);
1156         if (err < 0)
1157                 goto out;
1158
1159         bmsr = err;
1160         if (bmsr & BMSR_LSTATUS) {
1161                 u16 adv, lpa, common, estat;
1162
1163                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1164                 if (err < 0)
1165                         goto out;
1166                 adv = err;
1167
1168                 err = mii_read(np, np->phy_addr, MII_LPA);
1169                 if (err < 0)
1170                         goto out;
1171                 lpa = err;
1172
1173                 common = adv & lpa;
1174
1175                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1176                 if (err < 0)
1177                         goto out;
1178                 estat = err;
1179
1180                 link_up = 1;
1181                 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
1182                         current_speed = SPEED_1000;
1183                         if (estat & ESTATUS_1000_TFULL)
1184                                 current_duplex = DUPLEX_FULL;
1185                         else
1186                                 current_duplex = DUPLEX_HALF;
1187                 } else {
1188                         if (common & ADVERTISE_100BASE4) {
1189                                 current_speed = SPEED_100;
1190                                 current_duplex = DUPLEX_HALF;
1191                         } else if (common & ADVERTISE_100FULL) {
1192                                 current_speed = SPEED_100;
1193                                 current_duplex = DUPLEX_FULL;
1194                         } else if (common & ADVERTISE_100HALF) {
1195                                 current_speed = SPEED_100;
1196                                 current_duplex = DUPLEX_HALF;
1197                         } else if (common & ADVERTISE_10FULL) {
1198                                 current_speed = SPEED_10;
1199                                 current_duplex = DUPLEX_FULL;
1200                         } else if (common & ADVERTISE_10HALF) {
1201                                 current_speed = SPEED_10;
1202                                 current_duplex = DUPLEX_HALF;
1203                         } else
1204                                 link_up = 0;
1205                 }
1206         }
1207         err = 0;
1208
1209 out:
1210         spin_unlock_irqrestore(&np->lock, flags);
1211
1212         *link_up_p = link_up;
1213         return err;
1214 }
1215
1216 static int niu_link_status(struct niu *np, int *link_up_p)
1217 {
1218         const struct niu_phy_ops *ops = np->phy_ops;
1219         int err;
1220
1221         err = 0;
1222         if (ops->link_status)
1223                 err = ops->link_status(np, link_up_p);
1224
1225         return err;
1226 }
1227
1228 static void niu_timer(unsigned long __opaque)
1229 {
1230         struct niu *np = (struct niu *) __opaque;
1231         unsigned long off;
1232         int err, link_up;
1233
1234         err = niu_link_status(np, &link_up);
1235         if (!err)
1236                 niu_link_status_common(np, link_up);
1237
1238         if (netif_carrier_ok(np->dev))
1239                 off = 5 * HZ;
1240         else
1241                 off = 1 * HZ;
1242         np->timer.expires = jiffies + off;
1243
1244         add_timer(&np->timer);
1245 }
1246
1247 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
1248         .serdes_init            = serdes_init_niu,
1249         .xcvr_init              = xcvr_init_10g,
1250         .link_status            = link_status_10g,
1251 };
1252
1253 static const struct niu_phy_ops phy_ops_10g_fiber = {
1254         .serdes_init            = serdes_init_10g,
1255         .xcvr_init              = xcvr_init_10g,
1256         .link_status            = link_status_10g,
1257 };
1258
1259 static const struct niu_phy_ops phy_ops_10g_copper = {
1260         .serdes_init            = serdes_init_10g,
1261         .link_status            = link_status_10g, /* XXX */
1262 };
1263
1264 static const struct niu_phy_ops phy_ops_1g_fiber = {
1265         .serdes_init            = serdes_init_1g,
1266         .xcvr_init              = xcvr_init_1g,
1267         .link_status            = link_status_1g,
1268 };
1269
1270 static const struct niu_phy_ops phy_ops_1g_copper = {
1271         .xcvr_init              = xcvr_init_1g,
1272         .link_status            = link_status_1g,
1273 };
1274
1275 struct niu_phy_template {
1276         const struct niu_phy_ops        *ops;
1277         u32                             phy_addr_base;
1278 };
1279
1280 static const struct niu_phy_template phy_template_niu = {
1281         .ops            = &phy_ops_10g_fiber_niu,
1282         .phy_addr_base  = 16,
1283 };
1284
1285 static const struct niu_phy_template phy_template_10g_fiber = {
1286         .ops            = &phy_ops_10g_fiber,
1287         .phy_addr_base  = 8,
1288 };
1289
1290 static const struct niu_phy_template phy_template_10g_copper = {
1291         .ops            = &phy_ops_10g_copper,
1292         .phy_addr_base  = 10,
1293 };
1294
1295 static const struct niu_phy_template phy_template_1g_fiber = {
1296         .ops            = &phy_ops_1g_fiber,
1297         .phy_addr_base  = 0,
1298 };
1299
1300 static const struct niu_phy_template phy_template_1g_copper = {
1301         .ops            = &phy_ops_1g_copper,
1302         .phy_addr_base  = 0,
1303 };
1304
1305 static int niu_determine_phy_disposition(struct niu *np)
1306 {
1307         struct niu_parent *parent = np->parent;
1308         u8 plat_type = parent->plat_type;
1309         const struct niu_phy_template *tp;
1310         u32 phy_addr_off = 0;
1311
1312         if (plat_type == PLAT_TYPE_NIU) {
1313                 tp = &phy_template_niu;
1314                 phy_addr_off += np->port;
1315         } else {
1316                 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
1317                 case 0:
1318                         /* 1G copper */
1319                         tp = &phy_template_1g_copper;
1320                         if (plat_type == PLAT_TYPE_VF_P0)
1321                                 phy_addr_off = 10;
1322                         else if (plat_type == PLAT_TYPE_VF_P1)
1323                                 phy_addr_off = 26;
1324
1325                         phy_addr_off += (np->port ^ 0x3);
1326                         break;
1327
1328                 case NIU_FLAGS_10G:
1329                         /* 10G copper */
1330                         tp = &phy_template_1g_copper;
1331                         break;
1332
1333                 case NIU_FLAGS_FIBER:
1334                         /* 1G fiber */
1335                         tp = &phy_template_1g_fiber;
1336                         break;
1337
1338                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
1339                         /* 10G fiber */
1340                         tp = &phy_template_10g_fiber;
1341                         if (plat_type == PLAT_TYPE_VF_P0 ||
1342                             plat_type == PLAT_TYPE_VF_P1)
1343                                 phy_addr_off = 8;
1344                         phy_addr_off += np->port;
1345                         break;
1346
1347                 default:
1348                         return -EINVAL;
1349                 }
1350         }
1351
1352         np->phy_ops = tp->ops;
1353         np->phy_addr = tp->phy_addr_base + phy_addr_off;
1354
1355         return 0;
1356 }
1357
1358 static int niu_init_link(struct niu *np)
1359 {
1360         struct niu_parent *parent = np->parent;
1361         int err, ignore;
1362
1363         if (parent->plat_type == PLAT_TYPE_NIU) {
1364                 err = niu_xcvr_init(np);
1365                 if (err)
1366                         return err;
1367                 msleep(200);
1368         }
1369         err = niu_serdes_init(np);
1370         if (err)
1371                 return err;
1372         msleep(200);
1373         err = niu_xcvr_init(np);
1374         if (!err)
1375                 niu_link_status(np, &ignore);
1376         return 0;
1377 }
1378
1379 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
1380 {
1381         u16 reg0 = addr[4] << 8 | addr[5];
1382         u16 reg1 = addr[2] << 8 | addr[3];
1383         u16 reg2 = addr[0] << 8 | addr[1];
1384
1385         if (np->flags & NIU_FLAGS_XMAC) {
1386                 nw64_mac(XMAC_ADDR0, reg0);
1387                 nw64_mac(XMAC_ADDR1, reg1);
1388                 nw64_mac(XMAC_ADDR2, reg2);
1389         } else {
1390                 nw64_mac(BMAC_ADDR0, reg0);
1391                 nw64_mac(BMAC_ADDR1, reg1);
1392                 nw64_mac(BMAC_ADDR2, reg2);
1393         }
1394 }
1395
1396 static int niu_num_alt_addr(struct niu *np)
1397 {
1398         if (np->flags & NIU_FLAGS_XMAC)
1399                 return XMAC_NUM_ALT_ADDR;
1400         else
1401                 return BMAC_NUM_ALT_ADDR;
1402 }
1403
1404 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
1405 {
1406         u16 reg0 = addr[4] << 8 | addr[5];
1407         u16 reg1 = addr[2] << 8 | addr[3];
1408         u16 reg2 = addr[0] << 8 | addr[1];
1409
1410         if (index >= niu_num_alt_addr(np))
1411                 return -EINVAL;
1412
1413         if (np->flags & NIU_FLAGS_XMAC) {
1414                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
1415                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
1416                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
1417         } else {
1418                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
1419                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
1420                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
1421         }
1422
1423         return 0;
1424 }
1425
1426 static int niu_enable_alt_mac(struct niu *np, int index, int on)
1427 {
1428         unsigned long reg;
1429         u64 val, mask;
1430
1431         if (index >= niu_num_alt_addr(np))
1432                 return -EINVAL;
1433
1434         if (np->flags & NIU_FLAGS_XMAC)
1435                 reg = XMAC_ADDR_CMPEN;
1436         else
1437                 reg = BMAC_ADDR_CMPEN;
1438
1439         mask = 1 << index;
1440
1441         val = nr64_mac(reg);
1442         if (on)
1443                 val |= mask;
1444         else
1445                 val &= ~mask;
1446         nw64_mac(reg, val);
1447
1448         return 0;
1449 }
1450
1451 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
1452                                    int num, int mac_pref)
1453 {
1454         u64 val = nr64_mac(reg);
1455         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
1456         val |= num;
1457         if (mac_pref)
1458                 val |= HOST_INFO_MPR;
1459         nw64_mac(reg, val);
1460 }
1461
1462 static int __set_rdc_table_num(struct niu *np,
1463                                int xmac_index, int bmac_index,
1464                                int rdc_table_num, int mac_pref)
1465 {
1466         unsigned long reg;
1467
1468         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
1469                 return -EINVAL;
1470         if (np->flags & NIU_FLAGS_XMAC)
1471                 reg = XMAC_HOST_INFO(xmac_index);
1472         else
1473                 reg = BMAC_HOST_INFO(bmac_index);
1474         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
1475         return 0;
1476 }
1477
1478 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
1479                                          int mac_pref)
1480 {
1481         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
1482 }
1483
1484 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
1485                                            int mac_pref)
1486 {
1487         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
1488 }
1489
1490 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
1491                                      int table_num, int mac_pref)
1492 {
1493         if (idx >= niu_num_alt_addr(np))
1494                 return -EINVAL;
1495         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
1496 }
1497
1498 static u64 vlan_entry_set_parity(u64 reg_val)
1499 {
1500         u64 port01_mask;
1501         u64 port23_mask;
1502
1503         port01_mask = 0x00ff;
1504         port23_mask = 0xff00;
1505
1506         if (hweight64(reg_val & port01_mask) & 1)
1507                 reg_val |= ENET_VLAN_TBL_PARITY0;
1508         else
1509                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
1510
1511         if (hweight64(reg_val & port23_mask) & 1)
1512                 reg_val |= ENET_VLAN_TBL_PARITY1;
1513         else
1514                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
1515
1516         return reg_val;
1517 }
1518
1519 static void vlan_tbl_write(struct niu *np, unsigned long index,
1520                            int port, int vpr, int rdc_table)
1521 {
1522         u64 reg_val = nr64(ENET_VLAN_TBL(index));
1523
1524         reg_val &= ~((ENET_VLAN_TBL_VPR |
1525                       ENET_VLAN_TBL_VLANRDCTBLN) <<
1526                      ENET_VLAN_TBL_SHIFT(port));
1527         if (vpr)
1528                 reg_val |= (ENET_VLAN_TBL_VPR <<
1529                             ENET_VLAN_TBL_SHIFT(port));
1530         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
1531
1532         reg_val = vlan_entry_set_parity(reg_val);
1533
1534         nw64(ENET_VLAN_TBL(index), reg_val);
1535 }
1536
1537 static void vlan_tbl_clear(struct niu *np)
1538 {
1539         int i;
1540
1541         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
1542                 nw64(ENET_VLAN_TBL(i), 0);
1543 }
1544
1545 static int tcam_wait_bit(struct niu *np, u64 bit)
1546 {
1547         int limit = 1000;
1548
1549         while (--limit > 0) {
1550                 if (nr64(TCAM_CTL) & bit)
1551                         break;
1552                 udelay(1);
1553         }
1554         if (limit < 0)
1555                 return -ENODEV;
1556
1557         return 0;
1558 }
1559
1560 static int tcam_flush(struct niu *np, int index)
1561 {
1562         nw64(TCAM_KEY_0, 0x00);
1563         nw64(TCAM_KEY_MASK_0, 0xff);
1564         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1565
1566         return tcam_wait_bit(np, TCAM_CTL_STAT);
1567 }
1568
1569 #if 0
1570 static int tcam_read(struct niu *np, int index,
1571                      u64 *key, u64 *mask)
1572 {
1573         int err;
1574
1575         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
1576         err = tcam_wait_bit(np, TCAM_CTL_STAT);
1577         if (!err) {
1578                 key[0] = nr64(TCAM_KEY_0);
1579                 key[1] = nr64(TCAM_KEY_1);
1580                 key[2] = nr64(TCAM_KEY_2);
1581                 key[3] = nr64(TCAM_KEY_3);
1582                 mask[0] = nr64(TCAM_KEY_MASK_0);
1583                 mask[1] = nr64(TCAM_KEY_MASK_1);
1584                 mask[2] = nr64(TCAM_KEY_MASK_2);
1585                 mask[3] = nr64(TCAM_KEY_MASK_3);
1586         }
1587         return err;
1588 }
1589 #endif
1590
1591 static int tcam_write(struct niu *np, int index,
1592                       u64 *key, u64 *mask)
1593 {
1594         nw64(TCAM_KEY_0, key[0]);
1595         nw64(TCAM_KEY_1, key[1]);
1596         nw64(TCAM_KEY_2, key[2]);
1597         nw64(TCAM_KEY_3, key[3]);
1598         nw64(TCAM_KEY_MASK_0, mask[0]);
1599         nw64(TCAM_KEY_MASK_1, mask[1]);
1600         nw64(TCAM_KEY_MASK_2, mask[2]);
1601         nw64(TCAM_KEY_MASK_3, mask[3]);
1602         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1603
1604         return tcam_wait_bit(np, TCAM_CTL_STAT);
1605 }
1606
1607 #if 0
1608 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
1609 {
1610         int err;
1611
1612         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
1613         err = tcam_wait_bit(np, TCAM_CTL_STAT);
1614         if (!err)
1615                 *data = nr64(TCAM_KEY_1);
1616
1617         return err;
1618 }
1619 #endif
1620
1621 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
1622 {
1623         nw64(TCAM_KEY_1, assoc_data);
1624         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
1625
1626         return tcam_wait_bit(np, TCAM_CTL_STAT);
1627 }
1628
1629 static void tcam_enable(struct niu *np, int on)
1630 {
1631         u64 val = nr64(FFLP_CFG_1);
1632
1633         if (on)
1634                 val &= ~FFLP_CFG_1_TCAM_DIS;
1635         else
1636                 val |= FFLP_CFG_1_TCAM_DIS;
1637         nw64(FFLP_CFG_1, val);
1638 }
1639
1640 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
1641 {
1642         u64 val = nr64(FFLP_CFG_1);
1643
1644         val &= ~(FFLP_CFG_1_FFLPINITDONE |
1645                  FFLP_CFG_1_CAMLAT |
1646                  FFLP_CFG_1_CAMRATIO);
1647         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
1648         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
1649         nw64(FFLP_CFG_1, val);
1650
1651         val = nr64(FFLP_CFG_1);
1652         val |= FFLP_CFG_1_FFLPINITDONE;
1653         nw64(FFLP_CFG_1, val);
1654 }
1655
1656 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
1657                                       int on)
1658 {
1659         unsigned long reg;
1660         u64 val;
1661
1662         if (class < CLASS_CODE_ETHERTYPE1 ||
1663             class > CLASS_CODE_ETHERTYPE2)
1664                 return -EINVAL;
1665
1666         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1667         val = nr64(reg);
1668         if (on)
1669                 val |= L2_CLS_VLD;
1670         else
1671                 val &= ~L2_CLS_VLD;
1672         nw64(reg, val);
1673
1674         return 0;
1675 }
1676
1677 #if 0
1678 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
1679                                    u64 ether_type)
1680 {
1681         unsigned long reg;
1682         u64 val;
1683
1684         if (class < CLASS_CODE_ETHERTYPE1 ||
1685             class > CLASS_CODE_ETHERTYPE2 ||
1686             (ether_type & ~(u64)0xffff) != 0)
1687                 return -EINVAL;
1688
1689         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1690         val = nr64(reg);
1691         val &= ~L2_CLS_ETYPE;
1692         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
1693         nw64(reg, val);
1694
1695         return 0;
1696 }
1697 #endif
1698
1699 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
1700                                      int on)
1701 {
1702         unsigned long reg;
1703         u64 val;
1704
1705         if (class < CLASS_CODE_USER_PROG1 ||
1706             class > CLASS_CODE_USER_PROG4)
1707                 return -EINVAL;
1708
1709         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1710         val = nr64(reg);
1711         if (on)
1712                 val |= L3_CLS_VALID;
1713         else
1714                 val &= ~L3_CLS_VALID;
1715         nw64(reg, val);
1716
1717         return 0;
1718 }
1719
1720 #if 0
1721 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
1722                                   int ipv6, u64 protocol_id,
1723                                   u64 tos_mask, u64 tos_val)
1724 {
1725         unsigned long reg;
1726         u64 val;
1727
1728         if (class < CLASS_CODE_USER_PROG1 ||
1729             class > CLASS_CODE_USER_PROG4 ||
1730             (protocol_id & ~(u64)0xff) != 0 ||
1731             (tos_mask & ~(u64)0xff) != 0 ||
1732             (tos_val & ~(u64)0xff) != 0)
1733                 return -EINVAL;
1734
1735         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1736         val = nr64(reg);
1737         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
1738                  L3_CLS_TOSMASK | L3_CLS_TOS);
1739         if (ipv6)
1740                 val |= L3_CLS_IPVER;
1741         val |= (protocol_id << L3_CLS_PID_SHIFT);
1742         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
1743         val |= (tos_val << L3_CLS_TOS_SHIFT);
1744         nw64(reg, val);
1745
1746         return 0;
1747 }
1748 #endif
1749
1750 static int tcam_early_init(struct niu *np)
1751 {
1752         unsigned long i;
1753         int err;
1754
1755         tcam_enable(np, 0);
1756         tcam_set_lat_and_ratio(np,
1757                                DEFAULT_TCAM_LATENCY,
1758                                DEFAULT_TCAM_ACCESS_RATIO);
1759         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
1760                 err = tcam_user_eth_class_enable(np, i, 0);
1761                 if (err)
1762                         return err;
1763         }
1764         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
1765                 err = tcam_user_ip_class_enable(np, i, 0);
1766                 if (err)
1767                         return err;
1768         }
1769
1770         return 0;
1771 }
1772
1773 static int tcam_flush_all(struct niu *np)
1774 {
1775         unsigned long i;
1776
1777         for (i = 0; i < np->parent->tcam_num_entries; i++) {
1778                 int err = tcam_flush(np, i);
1779                 if (err)
1780                         return err;
1781         }
1782         return 0;
1783 }
1784
1785 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
1786 {
1787         return ((u64)index | (num_entries == 1 ?
1788                               HASH_TBL_ADDR_AUTOINC : 0));
1789 }
1790
1791 #if 0
1792 static int hash_read(struct niu *np, unsigned long partition,
1793                      unsigned long index, unsigned long num_entries,
1794                      u64 *data)
1795 {
1796         u64 val = hash_addr_regval(index, num_entries);
1797         unsigned long i;
1798
1799         if (partition >= FCRAM_NUM_PARTITIONS ||
1800             index + num_entries > FCRAM_SIZE)
1801                 return -EINVAL;
1802
1803         nw64(HASH_TBL_ADDR(partition), val);
1804         for (i = 0; i < num_entries; i++)
1805                 data[i] = nr64(HASH_TBL_DATA(partition));
1806
1807         return 0;
1808 }
1809 #endif
1810
1811 static int hash_write(struct niu *np, unsigned long partition,
1812                       unsigned long index, unsigned long num_entries,
1813                       u64 *data)
1814 {
1815         u64 val = hash_addr_regval(index, num_entries);
1816         unsigned long i;
1817
1818         if (partition >= FCRAM_NUM_PARTITIONS ||
1819             index + (num_entries * 8) > FCRAM_SIZE)
1820                 return -EINVAL;
1821
1822         nw64(HASH_TBL_ADDR(partition), val);
1823         for (i = 0; i < num_entries; i++)
1824                 nw64(HASH_TBL_DATA(partition), data[i]);
1825
1826         return 0;
1827 }
1828
1829 static void fflp_reset(struct niu *np)
1830 {
1831         u64 val;
1832
1833         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
1834         udelay(10);
1835         nw64(FFLP_CFG_1, 0);
1836
1837         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
1838         nw64(FFLP_CFG_1, val);
1839 }
1840
1841 static void fflp_set_timings(struct niu *np)
1842 {
1843         u64 val = nr64(FFLP_CFG_1);
1844
1845         val &= ~FFLP_CFG_1_FFLPINITDONE;
1846         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
1847         nw64(FFLP_CFG_1, val);
1848
1849         val = nr64(FFLP_CFG_1);
1850         val |= FFLP_CFG_1_FFLPINITDONE;
1851         nw64(FFLP_CFG_1, val);
1852
1853         val = nr64(FCRAM_REF_TMR);
1854         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
1855         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
1856         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
1857         nw64(FCRAM_REF_TMR, val);
1858 }
1859
1860 static int fflp_set_partition(struct niu *np, u64 partition,
1861                               u64 mask, u64 base, int enable)
1862 {
1863         unsigned long reg;
1864         u64 val;
1865
1866         if (partition >= FCRAM_NUM_PARTITIONS ||
1867             (mask & ~(u64)0x1f) != 0 ||
1868             (base & ~(u64)0x1f) != 0)
1869                 return -EINVAL;
1870
1871         reg = FLW_PRT_SEL(partition);
1872
1873         val = nr64(reg);
1874         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
1875         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
1876         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
1877         if (enable)
1878                 val |= FLW_PRT_SEL_EXT;
1879         nw64(reg, val);
1880
1881         return 0;
1882 }
1883
1884 static int fflp_disable_all_partitions(struct niu *np)
1885 {
1886         unsigned long i;
1887
1888         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
1889                 int err = fflp_set_partition(np, 0, 0, 0, 0);
1890                 if (err)
1891                         return err;
1892         }
1893         return 0;
1894 }
1895
1896 static void fflp_llcsnap_enable(struct niu *np, int on)
1897 {
1898         u64 val = nr64(FFLP_CFG_1);
1899
1900         if (on)
1901                 val |= FFLP_CFG_1_LLCSNAP;
1902         else
1903                 val &= ~FFLP_CFG_1_LLCSNAP;
1904         nw64(FFLP_CFG_1, val);
1905 }
1906
1907 static void fflp_errors_enable(struct niu *np, int on)
1908 {
1909         u64 val = nr64(FFLP_CFG_1);
1910
1911         if (on)
1912                 val &= ~FFLP_CFG_1_ERRORDIS;
1913         else
1914                 val |= FFLP_CFG_1_ERRORDIS;
1915         nw64(FFLP_CFG_1, val);
1916 }
1917
1918 static int fflp_hash_clear(struct niu *np)
1919 {
1920         struct fcram_hash_ipv4 ent;
1921         unsigned long i;
1922
1923         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
1924         memset(&ent, 0, sizeof(ent));
1925         ent.header = HASH_HEADER_EXT;
1926
1927         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
1928                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
1929                 if (err)
1930                         return err;
1931         }
1932         return 0;
1933 }
1934
1935 static int fflp_early_init(struct niu *np)
1936 {
1937         struct niu_parent *parent;
1938         unsigned long flags;
1939         int err;
1940
1941         niu_lock_parent(np, flags);
1942
1943         parent = np->parent;
1944         err = 0;
1945         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
1946                 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
1947                        np->port);
1948                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
1949                         fflp_reset(np);
1950                         fflp_set_timings(np);
1951                         err = fflp_disable_all_partitions(np);
1952                         if (err) {
1953                                 niudbg(PROBE, "fflp_disable_all_partitions "
1954                                        "failed, err=%d\n", err);
1955                                 goto out;
1956                         }
1957                 }
1958
1959                 err = tcam_early_init(np);
1960                 if (err) {
1961                         niudbg(PROBE, "tcam_early_init failed, err=%d\n",
1962                                err);
1963                         goto out;
1964                 }
1965                 fflp_llcsnap_enable(np, 1);
1966                 fflp_errors_enable(np, 0);
1967                 nw64(H1POLY, 0);
1968                 nw64(H2POLY, 0);
1969
1970                 err = tcam_flush_all(np);
1971                 if (err) {
1972                         niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
1973                                err);
1974                         goto out;
1975                 }
1976                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
1977                         err = fflp_hash_clear(np);
1978                         if (err) {
1979                                 niudbg(PROBE, "fflp_hash_clear failed, "
1980                                        "err=%d\n", err);
1981                                 goto out;
1982                         }
1983                 }
1984
1985                 vlan_tbl_clear(np);
1986
1987                 niudbg(PROBE, "fflp_early_init: Success\n");
1988                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
1989         }
1990 out:
1991         niu_unlock_parent(np, flags);
1992         return err;
1993 }
1994
1995 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
1996 {
1997         if (class_code < CLASS_CODE_USER_PROG1 ||
1998             class_code > CLASS_CODE_SCTP_IPV6)
1999                 return -EINVAL;
2000
2001         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2002         return 0;
2003 }
2004
2005 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
2006 {
2007         if (class_code < CLASS_CODE_USER_PROG1 ||
2008             class_code > CLASS_CODE_SCTP_IPV6)
2009                 return -EINVAL;
2010
2011         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2012         return 0;
2013 }
2014
2015 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
2016                               u32 offset, u32 size)
2017 {
2018         int i = skb_shinfo(skb)->nr_frags;
2019         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2020
2021         frag->page = page;
2022         frag->page_offset = offset;
2023         frag->size = size;
2024
2025         skb->len += size;
2026         skb->data_len += size;
2027         skb->truesize += size;
2028
2029         skb_shinfo(skb)->nr_frags = i + 1;
2030 }
2031
2032 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
2033 {
2034         a >>= PAGE_SHIFT;
2035         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
2036
2037         return (a & (MAX_RBR_RING_SIZE - 1));
2038 }
2039
2040 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
2041                                     struct page ***link)
2042 {
2043         unsigned int h = niu_hash_rxaddr(rp, addr);
2044         struct page *p, **pp;
2045
2046         addr &= PAGE_MASK;
2047         pp = &rp->rxhash[h];
2048         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
2049                 if (p->index == addr) {
2050                         *link = pp;
2051                         break;
2052                 }
2053         }
2054
2055         return p;
2056 }
2057
2058 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
2059 {
2060         unsigned int h = niu_hash_rxaddr(rp, base);
2061
2062         page->index = base;
2063         page->mapping = (struct address_space *) rp->rxhash[h];
2064         rp->rxhash[h] = page;
2065 }
2066
2067 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
2068                             gfp_t mask, int start_index)
2069 {
2070         struct page *page;
2071         u64 addr;
2072         int i;
2073
2074         page = alloc_page(mask);
2075         if (!page)
2076                 return -ENOMEM;
2077
2078         addr = np->ops->map_page(np->device, page, 0,
2079                                  PAGE_SIZE, DMA_FROM_DEVICE);
2080
2081         niu_hash_page(rp, page, addr);
2082         if (rp->rbr_blocks_per_page > 1)
2083                 atomic_add(rp->rbr_blocks_per_page - 1,
2084                            &compound_head(page)->_count);
2085
2086         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
2087                 __le32 *rbr = &rp->rbr[start_index + i];
2088
2089                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
2090                 addr += rp->rbr_block_size;
2091         }
2092
2093         return 0;
2094 }
2095
2096 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2097 {
2098         int index = rp->rbr_index;
2099
2100         rp->rbr_pending++;
2101         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
2102                 int err = niu_rbr_add_page(np, rp, mask, index);
2103
2104                 if (unlikely(err)) {
2105                         rp->rbr_pending--;
2106                         return;
2107                 }
2108
2109                 rp->rbr_index += rp->rbr_blocks_per_page;
2110                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
2111                 if (rp->rbr_index == rp->rbr_table_size)
2112                         rp->rbr_index = 0;
2113
2114                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
2115                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
2116                         rp->rbr_pending = 0;
2117                 }
2118         }
2119 }
2120
2121 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
2122 {
2123         unsigned int index = rp->rcr_index;
2124         int num_rcr = 0;
2125
2126         rp->rx_dropped++;
2127         while (1) {
2128                 struct page *page, **link;
2129                 u64 addr, val;
2130                 u32 rcr_size;
2131
2132                 num_rcr++;
2133
2134                 val = le64_to_cpup(&rp->rcr[index]);
2135                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2136                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2137                 page = niu_find_rxpage(rp, addr, &link);
2138
2139                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2140                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
2141                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
2142                         *link = (struct page *) page->mapping;
2143                         np->ops->unmap_page(np->device, page->index,
2144                                             PAGE_SIZE, DMA_FROM_DEVICE);
2145                         page->index = 0;
2146                         page->mapping = NULL;
2147                         __free_page(page);
2148                         rp->rbr_refill_pending++;
2149                 }
2150
2151                 index = NEXT_RCR(rp, index);
2152                 if (!(val & RCR_ENTRY_MULTI))
2153                         break;
2154
2155         }
2156         rp->rcr_index = index;
2157
2158         return num_rcr;
2159 }
2160
2161 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
2162 {
2163         unsigned int index = rp->rcr_index;
2164         struct sk_buff *skb;
2165         int len, num_rcr;
2166
2167         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
2168         if (unlikely(!skb))
2169                 return niu_rx_pkt_ignore(np, rp);
2170
2171         num_rcr = 0;
2172         while (1) {
2173                 struct page *page, **link;
2174                 u32 rcr_size, append_size;
2175                 u64 addr, val, off;
2176
2177                 num_rcr++;
2178
2179                 val = le64_to_cpup(&rp->rcr[index]);
2180
2181                 len = (val & RCR_ENTRY_L2_LEN) >>
2182                         RCR_ENTRY_L2_LEN_SHIFT;
2183                 len -= ETH_FCS_LEN;
2184
2185                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2186                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2187                 page = niu_find_rxpage(rp, addr, &link);
2188
2189                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2190                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
2191
2192                 off = addr & ~PAGE_MASK;
2193                 append_size = rcr_size;
2194                 if (num_rcr == 1) {
2195                         int ptype;
2196
2197                         off += 2;
2198                         append_size -= 2;
2199
2200                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
2201                         if ((ptype == RCR_PKT_TYPE_TCP ||
2202                              ptype == RCR_PKT_TYPE_UDP) &&
2203                             !(val & (RCR_ENTRY_NOPORT |
2204                                      RCR_ENTRY_ERROR)))
2205                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2206                         else
2207                                 skb->ip_summed = CHECKSUM_NONE;
2208                 }
2209                 if (!(val & RCR_ENTRY_MULTI))
2210                         append_size = len - skb->len;
2211
2212                 niu_rx_skb_append(skb, page, off, append_size);
2213                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
2214                         *link = (struct page *) page->mapping;
2215                         np->ops->unmap_page(np->device, page->index,
2216                                             PAGE_SIZE, DMA_FROM_DEVICE);
2217                         page->index = 0;
2218                         page->mapping = NULL;
2219                         rp->rbr_refill_pending++;
2220                 } else
2221                         get_page(page);
2222
2223                 index = NEXT_RCR(rp, index);
2224                 if (!(val & RCR_ENTRY_MULTI))
2225                         break;
2226
2227         }
2228         rp->rcr_index = index;
2229
2230         skb_reserve(skb, NET_IP_ALIGN);
2231         __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
2232
2233         rp->rx_packets++;
2234         rp->rx_bytes += skb->len;
2235
2236         skb->protocol = eth_type_trans(skb, np->dev);
2237         netif_receive_skb(skb);
2238
2239         return num_rcr;
2240 }
2241
2242 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2243 {
2244         int blocks_per_page = rp->rbr_blocks_per_page;
2245         int err, index = rp->rbr_index;
2246
2247         err = 0;
2248         while (index < (rp->rbr_table_size - blocks_per_page)) {
2249                 err = niu_rbr_add_page(np, rp, mask, index);
2250                 if (err)
2251                         break;
2252
2253                 index += blocks_per_page;
2254         }
2255
2256         rp->rbr_index = index;
2257         return err;
2258 }
2259
2260 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
2261 {
2262         int i;
2263
2264         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
2265                 struct page *page;
2266
2267                 page = rp->rxhash[i];
2268                 while (page) {
2269                         struct page *next = (struct page *) page->mapping;
2270                         u64 base = page->index;
2271
2272                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
2273                                             DMA_FROM_DEVICE);
2274                         page->index = 0;
2275                         page->mapping = NULL;
2276
2277                         __free_page(page);
2278
2279                         page = next;
2280                 }
2281         }
2282
2283         for (i = 0; i < rp->rbr_table_size; i++)
2284                 rp->rbr[i] = cpu_to_le32(0);
2285         rp->rbr_index = 0;
2286 }
2287
2288 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
2289 {
2290         struct tx_buff_info *tb = &rp->tx_buffs[idx];
2291         struct sk_buff *skb = tb->skb;
2292         struct tx_pkt_hdr *tp;
2293         u64 tx_flags;
2294         int i, len;
2295
2296         tp = (struct tx_pkt_hdr *) skb->data;
2297         tx_flags = le64_to_cpup(&tp->flags);
2298
2299         rp->tx_packets++;
2300         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
2301                          ((tx_flags & TXHDR_PAD) / 2));
2302
2303         len = skb_headlen(skb);
2304         np->ops->unmap_single(np->device, tb->mapping,
2305                               len, DMA_TO_DEVICE);
2306
2307         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
2308                 rp->mark_pending--;
2309
2310         tb->skb = NULL;
2311         do {
2312                 idx = NEXT_TX(rp, idx);
2313                 len -= MAX_TX_DESC_LEN;
2314         } while (len > 0);
2315
2316         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2317                 tb = &rp->tx_buffs[idx];
2318                 BUG_ON(tb->skb != NULL);
2319                 np->ops->unmap_page(np->device, tb->mapping,
2320                                     skb_shinfo(skb)->frags[i].size,
2321                                     DMA_TO_DEVICE);
2322                 idx = NEXT_TX(rp, idx);
2323         }
2324
2325         dev_kfree_skb(skb);
2326
2327         return idx;
2328 }
2329
2330 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
2331
2332 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
2333 {
2334         u16 pkt_cnt, tmp;
2335         int cons;
2336         u64 cs;
2337
2338         cs = rp->tx_cs;
2339         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
2340                 goto out;
2341
2342         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
2343         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
2344                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
2345
2346         rp->last_pkt_cnt = tmp;
2347
2348         cons = rp->cons;
2349
2350         niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
2351                np->dev->name, pkt_cnt, cons);
2352
2353         while (pkt_cnt--)
2354                 cons = release_tx_packet(np, rp, cons);
2355
2356         rp->cons = cons;
2357         smp_mb();
2358
2359 out:
2360         if (unlikely(netif_queue_stopped(np->dev) &&
2361                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
2362                 netif_tx_lock(np->dev);
2363                 if (netif_queue_stopped(np->dev) &&
2364                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
2365                         netif_wake_queue(np->dev);
2366                 netif_tx_unlock(np->dev);
2367         }
2368 }
2369
2370 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
2371 {
2372         int qlen, rcr_done = 0, work_done = 0;
2373         struct rxdma_mailbox *mbox = rp->mbox;
2374         u64 stat;
2375
2376 #if 1
2377         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2378         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
2379 #else
2380         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2381         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
2382 #endif
2383         mbox->rx_dma_ctl_stat = 0;
2384         mbox->rcrstat_a = 0;
2385
2386         niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
2387                np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
2388
2389         rcr_done = work_done = 0;
2390         qlen = min(qlen, budget);
2391         while (work_done < qlen) {
2392                 rcr_done += niu_process_rx_pkt(np, rp);
2393                 work_done++;
2394         }
2395
2396         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
2397                 unsigned int i;
2398
2399                 for (i = 0; i < rp->rbr_refill_pending; i++)
2400                         niu_rbr_refill(np, rp, GFP_ATOMIC);
2401                 rp->rbr_refill_pending = 0;
2402         }
2403
2404         stat = (RX_DMA_CTL_STAT_MEX |
2405                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
2406                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
2407
2408         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
2409
2410         return work_done;
2411 }
2412
2413 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
2414 {
2415         u64 v0 = lp->v0;
2416         u32 tx_vec = (v0 >> 32);
2417         u32 rx_vec = (v0 & 0xffffffff);
2418         int i, work_done = 0;
2419
2420         niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
2421                np->dev->name, (unsigned long long) v0);
2422
2423         for (i = 0; i < np->num_tx_rings; i++) {
2424                 struct tx_ring_info *rp = &np->tx_rings[i];
2425                 if (tx_vec & (1 << rp->tx_channel))
2426                         niu_tx_work(np, rp);
2427                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
2428         }
2429
2430         for (i = 0; i < np->num_rx_rings; i++) {
2431                 struct rx_ring_info *rp = &np->rx_rings[i];
2432
2433                 if (rx_vec & (1 << rp->rx_channel)) {
2434                         int this_work_done;
2435
2436                         this_work_done = niu_rx_work(np, rp,
2437                                                      budget);
2438
2439                         budget -= this_work_done;
2440                         work_done += this_work_done;
2441                 }
2442                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
2443         }
2444
2445         return work_done;
2446 }
2447
2448 static int niu_poll(struct napi_struct *napi, int budget)
2449 {
2450         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
2451         struct niu *np = lp->np;
2452         int work_done;
2453
2454         work_done = niu_poll_core(np, lp, budget);
2455
2456         if (work_done < budget) {
2457                 netif_rx_complete(np->dev, napi);
2458                 niu_ldg_rearm(np, lp, 1);
2459         }
2460         return work_done;
2461 }
2462
2463 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
2464                                   u64 stat)
2465 {
2466         dev_err(np->device, PFX "%s: RX channel %u errors ( ",
2467                 np->dev->name, rp->rx_channel);
2468
2469         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
2470                 printk("RBR_TMOUT ");
2471         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
2472                 printk("RSP_CNT ");
2473         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
2474                 printk("BYTE_EN_BUS ");
2475         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
2476                 printk("RSP_DAT ");
2477         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
2478                 printk("RCR_ACK ");
2479         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
2480                 printk("RCR_SHA_PAR ");
2481         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
2482                 printk("RBR_PRE_PAR ");
2483         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
2484                 printk("CONFIG ");
2485         if (stat & RX_DMA_CTL_STAT_RCRINCON)
2486                 printk("RCRINCON ");
2487         if (stat & RX_DMA_CTL_STAT_RCRFULL)
2488                 printk("RCRFULL ");
2489         if (stat & RX_DMA_CTL_STAT_RBRFULL)
2490                 printk("RBRFULL ");
2491         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
2492                 printk("RBRLOGPAGE ");
2493         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
2494                 printk("CFIGLOGPAGE ");
2495         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
2496                 printk("DC_FIDO ");
2497
2498         printk(")\n");
2499 }
2500
2501 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
2502 {
2503         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2504         int err = 0;
2505
2506         dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
2507                 np->dev->name, rp->rx_channel, (unsigned long long) stat);
2508
2509         niu_log_rxchan_errors(np, rp, stat);
2510
2511         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
2512                     RX_DMA_CTL_STAT_PORT_FATAL))
2513                 err = -EINVAL;
2514
2515         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
2516              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
2517
2518         return err;
2519 }
2520
2521 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
2522                                   u64 cs)
2523 {
2524         dev_err(np->device, PFX "%s: TX channel %u errors ( ",
2525                 np->dev->name, rp->tx_channel);
2526
2527         if (cs & TX_CS_MBOX_ERR)
2528                 printk("MBOX ");
2529         if (cs & TX_CS_PKT_SIZE_ERR)
2530                 printk("PKT_SIZE ");
2531         if (cs & TX_CS_TX_RING_OFLOW)
2532                 printk("TX_RING_OFLOW ");
2533         if (cs & TX_CS_PREF_BUF_PAR_ERR)
2534                 printk("PREF_BUF_PAR ");
2535         if (cs & TX_CS_NACK_PREF)
2536                 printk("NACK_PREF ");
2537         if (cs & TX_CS_NACK_PKT_RD)
2538                 printk("NACK_PKT_RD ");
2539         if (cs & TX_CS_CONF_PART_ERR)
2540                 printk("CONF_PART ");
2541         if (cs & TX_CS_PKT_PRT_ERR)
2542                 printk("PKT_PTR ");
2543
2544         printk(")\n");
2545 }
2546
2547 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
2548 {
2549         u64 cs, logh, logl;
2550
2551         cs = nr64(TX_CS(rp->tx_channel));
2552         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
2553         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
2554
2555         dev_err(np->device, PFX "%s: TX channel %u error, "
2556                 "cs[%llx] logh[%llx] logl[%llx]\n",
2557                 np->dev->name, rp->tx_channel,
2558                 (unsigned long long) cs,
2559                 (unsigned long long) logh,
2560                 (unsigned long long) logl);
2561
2562         niu_log_txchan_errors(np, rp, cs);
2563
2564         return -ENODEV;
2565 }
2566
2567 static int niu_mif_interrupt(struct niu *np)
2568 {
2569         u64 mif_status = nr64(MIF_STATUS);
2570         int phy_mdint = 0;
2571
2572         if (np->flags & NIU_FLAGS_XMAC) {
2573                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
2574
2575                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
2576                         phy_mdint = 1;
2577         }
2578
2579         dev_err(np->device, PFX "%s: MIF interrupt, "
2580                 "stat[%llx] phy_mdint(%d)\n",
2581                 np->dev->name, (unsigned long long) mif_status, phy_mdint);
2582
2583         return -ENODEV;
2584 }
2585
2586 static void niu_xmac_interrupt(struct niu *np)
2587 {
2588         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
2589         u64 val;
2590
2591         val = nr64_mac(XTXMAC_STATUS);
2592         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
2593                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
2594         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
2595                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
2596         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
2597                 mp->tx_fifo_errors++;
2598         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
2599                 mp->tx_overflow_errors++;
2600         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
2601                 mp->tx_max_pkt_size_errors++;
2602         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
2603                 mp->tx_underflow_errors++;
2604
2605         val = nr64_mac(XRXMAC_STATUS);
2606         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
2607                 mp->rx_local_faults++;
2608         if (val & XRXMAC_STATUS_RFLT_DET)
2609                 mp->rx_remote_faults++;
2610         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
2611                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
2612         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
2613                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
2614         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
2615                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
2616         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
2617                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
2618         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2619                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2620         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2621                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2622         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
2623                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
2624         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
2625                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
2626         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
2627                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
2628         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
2629                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
2630         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
2631                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
2632         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
2633                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
2634         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
2635                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
2636         if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
2637                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
2638         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
2639                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
2640         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
2641                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
2642         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
2643                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
2644         if (val & XRXMAC_STATUS_RXUFLOW)
2645                 mp->rx_underflows++;
2646         if (val & XRXMAC_STATUS_RXOFLOW)
2647                 mp->rx_overflows++;
2648
2649         val = nr64_mac(XMAC_FC_STAT);
2650         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
2651                 mp->pause_off_state++;
2652         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
2653                 mp->pause_on_state++;
2654         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
2655                 mp->pause_received++;
2656 }
2657
2658 static void niu_bmac_interrupt(struct niu *np)
2659 {
2660         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
2661         u64 val;
2662
2663         val = nr64_mac(BTXMAC_STATUS);
2664         if (val & BTXMAC_STATUS_UNDERRUN)
2665                 mp->tx_underflow_errors++;
2666         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
2667                 mp->tx_max_pkt_size_errors++;
2668         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
2669                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
2670         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
2671                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
2672
2673         val = nr64_mac(BRXMAC_STATUS);
2674         if (val & BRXMAC_STATUS_OVERFLOW)
2675                 mp->rx_overflows++;
2676         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
2677                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
2678         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
2679                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2680         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
2681                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2682         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
2683                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
2684
2685         val = nr64_mac(BMAC_CTRL_STATUS);
2686         if (val & BMAC_CTRL_STATUS_NOPAUSE)
2687                 mp->pause_off_state++;
2688         if (val & BMAC_CTRL_STATUS_PAUSE)
2689                 mp->pause_on_state++;
2690         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
2691                 mp->pause_received++;
2692 }
2693
2694 static int niu_mac_interrupt(struct niu *np)
2695 {
2696         if (np->flags & NIU_FLAGS_XMAC)
2697                 niu_xmac_interrupt(np);
2698         else
2699                 niu_bmac_interrupt(np);
2700
2701         return 0;
2702 }
2703
2704 static void niu_log_device_error(struct niu *np, u64 stat)
2705 {
2706         dev_err(np->device, PFX "%s: Core device errors ( ",
2707                 np->dev->name);
2708
2709         if (stat & SYS_ERR_MASK_META2)
2710                 printk("META2 ");
2711         if (stat & SYS_ERR_MASK_META1)
2712                 printk("META1 ");
2713         if (stat & SYS_ERR_MASK_PEU)
2714                 printk("PEU ");
2715         if (stat & SYS_ERR_MASK_TXC)
2716                 printk("TXC ");
2717         if (stat & SYS_ERR_MASK_RDMC)
2718                 printk("RDMC ");
2719         if (stat & SYS_ERR_MASK_TDMC)
2720                 printk("TDMC ");
2721         if (stat & SYS_ERR_MASK_ZCP)
2722                 printk("ZCP ");
2723         if (stat & SYS_ERR_MASK_FFLP)
2724                 printk("FFLP ");
2725         if (stat & SYS_ERR_MASK_IPP)
2726                 printk("IPP ");
2727         if (stat & SYS_ERR_MASK_MAC)
2728                 printk("MAC ");
2729         if (stat & SYS_ERR_MASK_SMX)
2730                 printk("SMX ");
2731
2732         printk(")\n");
2733 }
2734
2735 static int niu_device_error(struct niu *np)
2736 {
2737         u64 stat = nr64(SYS_ERR_STAT);
2738
2739         dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
2740                 np->dev->name, (unsigned long long) stat);
2741
2742         niu_log_device_error(np, stat);
2743
2744         return -ENODEV;
2745 }
2746
2747 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp)
2748 {
2749         u64 v0 = lp->v0;
2750         u64 v1 = lp->v1;
2751         u64 v2 = lp->v2;
2752         int i, err = 0;
2753
2754         if (v1 & 0x00000000ffffffffULL) {
2755                 u32 rx_vec = (v1 & 0xffffffff);
2756
2757                 for (i = 0; i < np->num_rx_rings; i++) {
2758                         struct rx_ring_info *rp = &np->rx_rings[i];
2759
2760                         if (rx_vec & (1 << rp->rx_channel)) {
2761                                 int r = niu_rx_error(np, rp);
2762                                 if (r)
2763                                         err = r;
2764                         }
2765                 }
2766         }
2767         if (v1 & 0x7fffffff00000000ULL) {
2768                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
2769
2770                 for (i = 0; i < np->num_tx_rings; i++) {
2771                         struct tx_ring_info *rp = &np->tx_rings[i];
2772
2773                         if (tx_vec & (1 << rp->tx_channel)) {
2774                                 int r = niu_tx_error(np, rp);
2775                                 if (r)
2776                                         err = r;
2777                         }
2778                 }
2779         }
2780         if ((v0 | v1) & 0x8000000000000000ULL) {
2781                 int r = niu_mif_interrupt(np);
2782                 if (r)
2783                         err = r;
2784         }
2785         if (v2) {
2786                 if (v2 & 0x01ef) {
2787                         int r = niu_mac_interrupt(np);
2788                         if (r)
2789                                 err = r;
2790                 }
2791                 if (v2 & 0x0210) {
2792                         int r = niu_device_error(np);
2793                         if (r)
2794                                 err = r;
2795                 }
2796         }
2797
2798         if (err)
2799                 niu_enable_interrupts(np, 0);
2800
2801         return -EINVAL;
2802 }
2803
2804 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
2805                             int ldn)
2806 {
2807         struct rxdma_mailbox *mbox = rp->mbox;
2808         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2809
2810         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
2811                       RX_DMA_CTL_STAT_RCRTO);
2812         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
2813
2814         niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
2815                np->dev->name, (unsigned long long) stat);
2816 }
2817
2818 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
2819                             int ldn)
2820 {
2821         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
2822
2823         niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
2824                np->dev->name, (unsigned long long) rp->tx_cs);
2825 }
2826
2827 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
2828 {
2829         struct niu_parent *parent = np->parent;
2830         u32 rx_vec, tx_vec;
2831         int i;
2832
2833         tx_vec = (v0 >> 32);
2834         rx_vec = (v0 & 0xffffffff);
2835
2836         for (i = 0; i < np->num_rx_rings; i++) {
2837                 struct rx_ring_info *rp = &np->rx_rings[i];
2838                 int ldn = LDN_RXDMA(rp->rx_channel);
2839
2840                 if (parent->ldg_map[ldn] != ldg)
2841                         continue;
2842
2843                 nw64(LD_IM0(ldn), LD_IM0_MASK);
2844                 if (rx_vec & (1 << rp->rx_channel))
2845                         niu_rxchan_intr(np, rp, ldn);
2846         }
2847
2848         for (i = 0; i < np->num_tx_rings; i++) {
2849                 struct tx_ring_info *rp = &np->tx_rings[i];
2850                 int ldn = LDN_TXDMA(rp->tx_channel);
2851
2852                 if (parent->ldg_map[ldn] != ldg)
2853                         continue;
2854
2855                 nw64(LD_IM0(ldn), LD_IM0_MASK);
2856                 if (tx_vec & (1 << rp->tx_channel))
2857                         niu_txchan_intr(np, rp, ldn);
2858         }
2859 }
2860
2861 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
2862                               u64 v0, u64 v1, u64 v2)
2863 {
2864         if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
2865                 lp->v0 = v0;
2866                 lp->v1 = v1;
2867                 lp->v2 = v2;
2868                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
2869                 __netif_rx_schedule(np->dev, &lp->napi);
2870         }
2871 }
2872
2873 static irqreturn_t niu_interrupt(int irq, void *dev_id)
2874 {
2875         struct niu_ldg *lp = dev_id;
2876         struct niu *np = lp->np;
2877         int ldg = lp->ldg_num;
2878         unsigned long flags;
2879         u64 v0, v1, v2;
2880
2881         if (netif_msg_intr(np))
2882                 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
2883                        lp, ldg);
2884
2885         spin_lock_irqsave(&np->lock, flags);
2886
2887         v0 = nr64(LDSV0(ldg));
2888         v1 = nr64(LDSV1(ldg));
2889         v2 = nr64(LDSV2(ldg));
2890
2891         if (netif_msg_intr(np))
2892                 printk("v0[%llx] v1[%llx] v2[%llx]\n",
2893                        (unsigned long long) v0,
2894                        (unsigned long long) v1,
2895                        (unsigned long long) v2);
2896
2897         if (unlikely(!v0 && !v1 && !v2)) {
2898                 spin_unlock_irqrestore(&np->lock, flags);
2899                 return IRQ_NONE;
2900         }
2901
2902         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
2903                 int err = niu_slowpath_interrupt(np, lp);
2904                 if (err)
2905                         goto out;
2906         }
2907         if (likely(v0 & ~((u64)1 << LDN_MIF)))
2908                 niu_schedule_napi(np, lp, v0, v1, v2);
2909         else
2910                 niu_ldg_rearm(np, lp, 1);
2911 out:
2912         spin_unlock_irqrestore(&np->lock, flags);
2913
2914         return IRQ_HANDLED;
2915 }
2916
2917 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
2918 {
2919         if (rp->mbox) {
2920                 np->ops->free_coherent(np->device,
2921                                        sizeof(struct rxdma_mailbox),
2922                                        rp->mbox, rp->mbox_dma);
2923                 rp->mbox = NULL;
2924         }
2925         if (rp->rcr) {
2926                 np->ops->free_coherent(np->device,
2927                                        MAX_RCR_RING_SIZE * sizeof(__le64),
2928                                        rp->rcr, rp->rcr_dma);
2929                 rp->rcr = NULL;
2930                 rp->rcr_table_size = 0;
2931                 rp->rcr_index = 0;
2932         }
2933         if (rp->rbr) {
2934                 niu_rbr_free(np, rp);
2935
2936                 np->ops->free_coherent(np->device,
2937                                        MAX_RBR_RING_SIZE * sizeof(__le32),
2938                                        rp->rbr, rp->rbr_dma);
2939                 rp->rbr = NULL;
2940                 rp->rbr_table_size = 0;
2941                 rp->rbr_index = 0;
2942         }
2943         kfree(rp->rxhash);
2944         rp->rxhash = NULL;
2945 }
2946
2947 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
2948 {
2949         if (rp->mbox) {
2950                 np->ops->free_coherent(np->device,
2951                                        sizeof(struct txdma_mailbox),
2952                                        rp->mbox, rp->mbox_dma);
2953                 rp->mbox = NULL;
2954         }
2955         if (rp->descr) {
2956                 int i;
2957
2958                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
2959                         if (rp->tx_buffs[i].skb)
2960                                 (void) release_tx_packet(np, rp, i);
2961                 }
2962
2963                 np->ops->free_coherent(np->device,
2964                                        MAX_TX_RING_SIZE * sizeof(__le64),
2965                                        rp->descr, rp->descr_dma);
2966                 rp->descr = NULL;
2967                 rp->pending = 0;
2968                 rp->prod = 0;
2969                 rp->cons = 0;
2970                 rp->wrap_bit = 0;
2971         }
2972 }
2973
2974 static void niu_free_channels(struct niu *np)
2975 {
2976         int i;
2977
2978         if (np->rx_rings) {
2979                 for (i = 0; i < np->num_rx_rings; i++) {
2980                         struct rx_ring_info *rp = &np->rx_rings[i];
2981
2982                         niu_free_rx_ring_info(np, rp);
2983                 }
2984                 kfree(np->rx_rings);
2985                 np->rx_rings = NULL;
2986                 np->num_rx_rings = 0;
2987         }
2988
2989         if (np->tx_rings) {
2990                 for (i = 0; i < np->num_tx_rings; i++) {
2991                         struct tx_ring_info *rp = &np->tx_rings[i];
2992
2993                         niu_free_tx_ring_info(np, rp);
2994                 }
2995                 kfree(np->tx_rings);
2996                 np->tx_rings = NULL;
2997                 np->num_tx_rings = 0;
2998         }
2999 }
3000
3001 static int niu_alloc_rx_ring_info(struct niu *np,
3002                                   struct rx_ring_info *rp)
3003 {
3004         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
3005
3006         rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
3007                              GFP_KERNEL);
3008         if (!rp->rxhash)
3009                 return -ENOMEM;
3010
3011         rp->mbox = np->ops->alloc_coherent(np->device,
3012                                            sizeof(struct rxdma_mailbox),
3013                                            &rp->mbox_dma, GFP_KERNEL);
3014         if (!rp->mbox)
3015                 return -ENOMEM;
3016         if ((unsigned long)rp->mbox & (64UL - 1)) {
3017                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3018                         "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
3019                 return -EINVAL;
3020         }
3021
3022         rp->rcr = np->ops->alloc_coherent(np->device,
3023                                           MAX_RCR_RING_SIZE * sizeof(__le64),
3024                                           &rp->rcr_dma, GFP_KERNEL);
3025         if (!rp->rcr)
3026                 return -ENOMEM;
3027         if ((unsigned long)rp->rcr & (64UL - 1)) {
3028                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3029                         "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
3030                 return -EINVAL;
3031         }
3032         rp->rcr_table_size = MAX_RCR_RING_SIZE;
3033         rp->rcr_index = 0;
3034
3035         rp->rbr = np->ops->alloc_coherent(np->device,
3036                                           MAX_RBR_RING_SIZE * sizeof(__le32),
3037                                           &rp->rbr_dma, GFP_KERNEL);
3038         if (!rp->rbr)
3039                 return -ENOMEM;
3040         if ((unsigned long)rp->rbr & (64UL - 1)) {
3041                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3042                         "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
3043                 return -EINVAL;
3044         }
3045         rp->rbr_table_size = MAX_RBR_RING_SIZE;
3046         rp->rbr_index = 0;
3047         rp->rbr_pending = 0;
3048
3049         return 0;
3050 }
3051
3052 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
3053 {
3054         int mtu = np->dev->mtu;
3055
3056         /* These values are recommended by the HW designers for fair
3057          * utilization of DRR amongst the rings.
3058          */
3059         rp->max_burst = mtu + 32;
3060         if (rp->max_burst > 4096)
3061                 rp->max_burst = 4096;
3062 }
3063
3064 static int niu_alloc_tx_ring_info(struct niu *np,
3065                                   struct tx_ring_info *rp)
3066 {
3067         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
3068
3069         rp->mbox = np->ops->alloc_coherent(np->device,
3070                                            sizeof(struct txdma_mailbox),
3071                                            &rp->mbox_dma, GFP_KERNEL);
3072         if (!rp->mbox)
3073                 return -ENOMEM;
3074         if ((unsigned long)rp->mbox & (64UL - 1)) {
3075                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3076                         "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
3077                 return -EINVAL;
3078         }
3079
3080         rp->descr = np->ops->alloc_coherent(np->device,
3081                                             MAX_TX_RING_SIZE * sizeof(__le64),
3082                                             &rp->descr_dma, GFP_KERNEL);
3083         if (!rp->descr)
3084                 return -ENOMEM;
3085         if ((unsigned long)rp->descr & (64UL - 1)) {
3086                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3087                         "TXDMA descr table %p\n", np->dev->name, rp->descr);
3088                 return -EINVAL;
3089         }
3090
3091         rp->pending = MAX_TX_RING_SIZE;
3092         rp->prod = 0;
3093         rp->cons = 0;
3094         rp->wrap_bit = 0;
3095
3096         /* XXX make these configurable... XXX */
3097         rp->mark_freq = rp->pending / 4;
3098
3099         niu_set_max_burst(np, rp);
3100
3101         return 0;
3102 }
3103
3104 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
3105 {
3106         u16 bs;
3107
3108         switch (PAGE_SIZE) {
3109         case 4 * 1024:
3110         case 8 * 1024:
3111         case 16 * 1024:
3112         case 32 * 1024:
3113                 rp->rbr_block_size = PAGE_SIZE;
3114                 rp->rbr_blocks_per_page = 1;
3115                 break;
3116
3117         default:
3118                 if (PAGE_SIZE % (32 * 1024) == 0)
3119                         bs = 32 * 1024;
3120                 else if (PAGE_SIZE % (16 * 1024) == 0)
3121                         bs = 16 * 1024;
3122                 else if (PAGE_SIZE % (8 * 1024) == 0)
3123                         bs = 8 * 1024;
3124                 else if (PAGE_SIZE % (4 * 1024) == 0)
3125                         bs = 4 * 1024;
3126                 else
3127                         BUG();
3128                 rp->rbr_block_size = bs;
3129                 rp->rbr_blocks_per_page = PAGE_SIZE / bs;
3130         }
3131
3132         rp->rbr_sizes[0] = 256;
3133         rp->rbr_sizes[1] = 1024;
3134         if (np->dev->mtu > ETH_DATA_LEN) {
3135                 switch (PAGE_SIZE) {
3136                 case 4 * 1024:
3137                         rp->rbr_sizes[2] = 4096;
3138                         break;
3139
3140                 default:
3141                         rp->rbr_sizes[2] = 8192;
3142                         break;
3143                 }
3144         } else {
3145                 rp->rbr_sizes[2] = 2048;
3146         }
3147         rp->rbr_sizes[3] = rp->rbr_block_size;
3148 }
3149
3150 static int niu_alloc_channels(struct niu *np)
3151 {
3152         struct niu_parent *parent = np->parent;
3153         int first_rx_channel, first_tx_channel;
3154         int i, port, err;
3155
3156         port = np->port;
3157         first_rx_channel = first_tx_channel = 0;
3158         for (i = 0; i < port; i++) {
3159                 first_rx_channel += parent->rxchan_per_port[i];
3160                 first_tx_channel += parent->txchan_per_port[i];
3161         }
3162
3163         np->num_rx_rings = parent->rxchan_per_port[port];
3164         np->num_tx_rings = parent->txchan_per_port[port];
3165
3166         np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
3167                                GFP_KERNEL);
3168         err = -ENOMEM;
3169         if (!np->rx_rings)
3170                 goto out_err;
3171
3172         for (i = 0; i < np->num_rx_rings; i++) {
3173                 struct rx_ring_info *rp = &np->rx_rings[i];
3174
3175                 rp->np = np;
3176                 rp->rx_channel = first_rx_channel + i;
3177
3178                 err = niu_alloc_rx_ring_info(np, rp);
3179                 if (err)
3180                         goto out_err;
3181
3182                 niu_size_rbr(np, rp);
3183
3184                 /* XXX better defaults, configurable, etc... XXX */
3185                 rp->nonsyn_window = 64;
3186                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
3187                 rp->syn_window = 64;
3188                 rp->syn_threshold = rp->rcr_table_size - 64;
3189                 rp->rcr_pkt_threshold = 16;
3190                 rp->rcr_timeout = 8;
3191                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
3192                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
3193                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
3194
3195                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
3196                 if (err)
3197                         return err;
3198         }
3199
3200         np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
3201                                GFP_KERNEL);
3202         err = -ENOMEM;
3203         if (!np->tx_rings)
3204                 goto out_err;
3205
3206         for (i = 0; i < np->num_tx_rings; i++) {
3207                 struct tx_ring_info *rp = &np->tx_rings[i];
3208
3209                 rp->np = np;
3210                 rp->tx_channel = first_tx_channel + i;
3211
3212                 err = niu_alloc_tx_ring_info(np, rp);
3213                 if (err)
3214                         goto out_err;
3215         }
3216
3217         return 0;
3218
3219 out_err:
3220         niu_free_channels(np);
3221         return err;
3222 }
3223
3224 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
3225 {
3226         int limit = 1000;
3227
3228         while (--limit > 0) {
3229                 u64 val = nr64(TX_CS(channel));
3230                 if (val & TX_CS_SNG_STATE)
3231                         return 0;
3232         }
3233         return -ENODEV;
3234 }
3235
3236 static int niu_tx_channel_stop(struct niu *np, int channel)
3237 {
3238         u64 val = nr64(TX_CS(channel));
3239
3240         val |= TX_CS_STOP_N_GO;
3241         nw64(TX_CS(channel), val);
3242
3243         return niu_tx_cs_sng_poll(np, channel);
3244 }
3245
3246 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
3247 {
3248         int limit = 1000;
3249
3250         while (--limit > 0) {
3251                 u64 val = nr64(TX_CS(channel));
3252                 if (!(val & TX_CS_RST))
3253                         return 0;
3254         }
3255         return -ENODEV;
3256 }
3257
3258 static int niu_tx_channel_reset(struct niu *np, int channel)
3259 {
3260         u64 val = nr64(TX_CS(channel));
3261         int err;
3262
3263         val |= TX_CS_RST;
3264         nw64(TX_CS(channel), val);
3265
3266         err = niu_tx_cs_reset_poll(np, channel);
3267         if (!err)
3268                 nw64(TX_RING_KICK(channel), 0);
3269
3270         return err;
3271 }
3272
3273 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
3274 {
3275         u64 val;
3276
3277         nw64(TX_LOG_MASK1(channel), 0);
3278         nw64(TX_LOG_VAL1(channel), 0);
3279         nw64(TX_LOG_MASK2(channel), 0);
3280         nw64(TX_LOG_VAL2(channel), 0);
3281         nw64(TX_LOG_PAGE_RELO1(channel), 0);
3282         nw64(TX_LOG_PAGE_RELO2(channel), 0);
3283         nw64(TX_LOG_PAGE_HDL(channel), 0);
3284
3285         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
3286         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
3287         nw64(TX_LOG_PAGE_VLD(channel), val);
3288
3289         /* XXX TXDMA 32bit mode? XXX */
3290
3291         return 0;
3292 }
3293
3294 static void niu_txc_enable_port(struct niu *np, int on)
3295 {
3296         unsigned long flags;
3297         u64 val, mask;
3298
3299         niu_lock_parent(np, flags);
3300         val = nr64(TXC_CONTROL);
3301         mask = (u64)1 << np->port;
3302         if (on) {
3303                 val |= TXC_CONTROL_ENABLE | mask;
3304         } else {
3305                 val &= ~mask;
3306                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
3307                         val &= ~TXC_CONTROL_ENABLE;
3308         }
3309         nw64(TXC_CONTROL, val);
3310         niu_unlock_parent(np, flags);
3311 }
3312
3313 static void niu_txc_set_imask(struct niu *np, u64 imask)
3314 {
3315         unsigned long flags;
3316         u64 val;
3317
3318         niu_lock_parent(np, flags);
3319         val = nr64(TXC_INT_MASK);
3320         val &= ~TXC_INT_MASK_VAL(np->port);
3321         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
3322         niu_unlock_parent(np, flags);
3323 }
3324
3325 static void niu_txc_port_dma_enable(struct niu *np, int on)
3326 {
3327         u64 val = 0;
3328
3329         if (on) {
3330                 int i;
3331
3332                 for (i = 0; i < np->num_tx_rings; i++)
3333                         val |= (1 << np->tx_rings[i].tx_channel);
3334         }
3335         nw64(TXC_PORT_DMA(np->port), val);
3336 }
3337
3338 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
3339 {
3340         int err, channel = rp->tx_channel;
3341         u64 val, ring_len;
3342
3343         err = niu_tx_channel_stop(np, channel);
3344         if (err)
3345                 return err;
3346
3347         err = niu_tx_channel_reset(np, channel);
3348         if (err)
3349                 return err;
3350
3351         err = niu_tx_channel_lpage_init(np, channel);
3352         if (err)
3353                 return err;
3354
3355         nw64(TXC_DMA_MAX(channel), rp->max_burst);
3356         nw64(TX_ENT_MSK(channel), 0);
3357
3358         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
3359                               TX_RNG_CFIG_STADDR)) {
3360                 dev_err(np->device, PFX "%s: TX ring channel %d "
3361                         "DMA addr (%llx) is not aligned.\n",
3362                         np->dev->name, channel,
3363                         (unsigned long long) rp->descr_dma);
3364                 return -EINVAL;
3365         }
3366
3367         /* The length field in TX_RNG_CFIG is measured in 64-byte
3368          * blocks.  rp->pending is the number of TX descriptors in
3369          * our ring, 8 bytes each, thus we divide by 8 bytes more
3370          * to get the proper value the chip wants.
3371          */
3372         ring_len = (rp->pending / 8);
3373
3374         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
3375                rp->descr_dma);
3376         nw64(TX_RNG_CFIG(channel), val);
3377
3378         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
3379             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
3380                 dev_err(np->device, PFX "%s: TX ring channel %d "
3381                         "MBOX addr (%llx) is has illegal bits.\n",
3382                         np->dev->name, channel,
3383                         (unsigned long long) rp->mbox_dma);
3384                 return -EINVAL;
3385         }
3386         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
3387         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
3388
3389         nw64(TX_CS(channel), 0);
3390
3391         rp->last_pkt_cnt = 0;
3392
3393         return 0;
3394 }
3395
3396 static void niu_init_rdc_groups(struct niu *np)
3397 {
3398         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
3399         int i, first_table_num = tp->first_table_num;
3400
3401         for (i = 0; i < tp->num_tables; i++) {
3402                 struct rdc_table *tbl = &tp->tables[i];
3403                 int this_table = first_table_num + i;
3404                 int slot;
3405
3406                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
3407                         nw64(RDC_TBL(this_table, slot),
3408                              tbl->rxdma_channel[slot]);
3409         }
3410
3411         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
3412 }
3413
3414 static void niu_init_drr_weight(struct niu *np)
3415 {
3416         int type = phy_decode(np->parent->port_phy, np->port);
3417         u64 val;
3418
3419         switch (type) {
3420         case PORT_TYPE_10G:
3421                 val = PT_DRR_WEIGHT_DEFAULT_10G;
3422                 break;
3423
3424         case PORT_TYPE_1G:
3425         default:
3426                 val = PT_DRR_WEIGHT_DEFAULT_1G;
3427                 break;
3428         }
3429         nw64(PT_DRR_WT(np->port), val);
3430 }
3431
3432 static int niu_init_hostinfo(struct niu *np)
3433 {
3434         struct niu_parent *parent = np->parent;
3435         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
3436         int i, err, num_alt = niu_num_alt_addr(np);
3437         int first_rdc_table = tp->first_table_num;
3438
3439         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
3440         if (err)
3441                 return err;
3442
3443         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
3444         if (err)
3445                 return err;
3446
3447         for (i = 0; i < num_alt; i++) {
3448                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
3449                 if (err)
3450                         return err;
3451         }
3452
3453         return 0;
3454 }
3455
3456 static int niu_rx_channel_reset(struct niu *np, int channel)
3457 {
3458         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
3459                                       RXDMA_CFIG1_RST, 1000, 10,
3460                                       "RXDMA_CFIG1");
3461 }
3462
3463 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
3464 {
3465         u64 val;
3466
3467         nw64(RX_LOG_MASK1(channel), 0);
3468         nw64(RX_LOG_VAL1(channel), 0);
3469         nw64(RX_LOG_MASK2(channel), 0);
3470         nw64(RX_LOG_VAL2(channel), 0);
3471         nw64(RX_LOG_PAGE_RELO1(channel), 0);
3472         nw64(RX_LOG_PAGE_RELO2(channel), 0);
3473         nw64(RX_LOG_PAGE_HDL(channel), 0);
3474
3475         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
3476         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
3477         nw64(RX_LOG_PAGE_VLD(channel), val);
3478
3479         return 0;
3480 }
3481
3482 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
3483 {
3484         u64 val;
3485
3486         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
3487                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
3488                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
3489                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
3490         nw64(RDC_RED_PARA(rp->rx_channel), val);
3491 }
3492
3493 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
3494 {
3495         u64 val = 0;
3496
3497         switch (rp->rbr_block_size) {
3498         case 4 * 1024:
3499                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
3500                 break;
3501         case 8 * 1024:
3502                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
3503                 break;
3504         case 16 * 1024:
3505                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
3506                 break;
3507         case 32 * 1024:
3508                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
3509                 break;
3510         default:
3511                 return -EINVAL;
3512         }
3513         val |= RBR_CFIG_B_VLD2;
3514         switch (rp->rbr_sizes[2]) {
3515         case 2 * 1024:
3516                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
3517                 break;
3518         case 4 * 1024:
3519                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
3520                 break;
3521         case 8 * 1024:
3522                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
3523                 break;
3524         case 16 * 1024:
3525                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
3526                 break;
3527
3528         default:
3529                 return -EINVAL;
3530         }
3531         val |= RBR_CFIG_B_VLD1;
3532         switch (rp->rbr_sizes[1]) {
3533         case 1 * 1024:
3534                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
3535                 break;
3536         case 2 * 1024:
3537                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
3538                 break;
3539         case 4 * 1024:
3540                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
3541                 break;
3542         case 8 * 1024:
3543                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
3544                 break;
3545
3546         default:
3547                 return -EINVAL;
3548         }
3549         val |= RBR_CFIG_B_VLD0;
3550         switch (rp->rbr_sizes[0]) {
3551         case 256:
3552                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
3553                 break;
3554         case 512:
3555                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
3556                 break;
3557         case 1 * 1024:
3558                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
3559                 break;
3560         case 2 * 1024:
3561                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
3562                 break;
3563
3564         default:
3565                 return -EINVAL;
3566         }
3567
3568         *ret = val;
3569         return 0;
3570 }
3571
3572 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
3573 {
3574         u64 val = nr64(RXDMA_CFIG1(channel));
3575         int limit;
3576
3577         if (on)
3578                 val |= RXDMA_CFIG1_EN;
3579         else
3580                 val &= ~RXDMA_CFIG1_EN;
3581         nw64(RXDMA_CFIG1(channel), val);
3582
3583         limit = 1000;
3584         while (--limit > 0) {
3585                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
3586                         break;
3587                 udelay(10);
3588         }
3589         if (limit <= 0)
3590                 return -ENODEV;
3591         return 0;
3592 }
3593
3594 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
3595 {
3596         int err, channel = rp->rx_channel;
3597         u64 val;
3598
3599         err = niu_rx_channel_reset(np, channel);
3600         if (err)
3601                 return err;
3602
3603         err = niu_rx_channel_lpage_init(np, channel);
3604         if (err)
3605                 return err;
3606
3607         niu_rx_channel_wred_init(np, rp);
3608
3609         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
3610         nw64(RX_DMA_CTL_STAT(channel),
3611              (RX_DMA_CTL_STAT_MEX |
3612               RX_DMA_CTL_STAT_RCRTHRES |
3613               RX_DMA_CTL_STAT_RCRTO |
3614               RX_DMA_CTL_STAT_RBR_EMPTY));
3615         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
3616         nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
3617         nw64(RBR_CFIG_A(channel),
3618              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
3619              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
3620         err = niu_compute_rbr_cfig_b(rp, &val);
3621         if (err)
3622                 return err;
3623         nw64(RBR_CFIG_B(channel), val);
3624         nw64(RCRCFIG_A(channel),
3625              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
3626              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
3627         nw64(RCRCFIG_B(channel),
3628              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
3629              RCRCFIG_B_ENTOUT |
3630              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
3631
3632         err = niu_enable_rx_channel(np, channel, 1);
3633         if (err)
3634                 return err;
3635
3636         nw64(RBR_KICK(channel), rp->rbr_index);
3637
3638         val = nr64(RX_DMA_CTL_STAT(channel));
3639         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
3640         nw64(RX_DMA_CTL_STAT(channel), val);
3641
3642         return 0;
3643 }
3644
3645 static int niu_init_rx_channels(struct niu *np)
3646 {
3647         unsigned long flags;
3648         u64 seed = jiffies_64;
3649         int err, i;
3650
3651         niu_lock_parent(np, flags);
3652         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
3653         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
3654         niu_unlock_parent(np, flags);
3655
3656         /* XXX RXDMA 32bit mode? XXX */
3657
3658         niu_init_rdc_groups(np);
3659         niu_init_drr_weight(np);
3660
3661         err = niu_init_hostinfo(np);
3662         if (err)
3663                 return err;
3664
3665         for (i = 0; i < np->num_rx_rings; i++) {
3666                 struct rx_ring_info *rp = &np->rx_rings[i];
3667
3668                 err = niu_init_one_rx_channel(np, rp);
3669                 if (err)
3670                         return err;
3671         }
3672
3673         return 0;
3674 }
3675
3676 static int niu_set_ip_frag_rule(struct niu *np)
3677 {
3678         struct niu_parent *parent = np->parent;
3679         struct niu_classifier *cp = &np->clas;
3680         struct niu_tcam_entry *tp;
3681         int index, err;
3682
3683         /* XXX fix this allocation scheme XXX */
3684         index = cp->tcam_index;
3685         tp = &parent->tcam[index];
3686
3687         /* Note that the noport bit is the same in both ipv4 and
3688          * ipv6 format TCAM entries.
3689          */
3690         memset(tp, 0, sizeof(*tp));
3691         tp->key[1] = TCAM_V4KEY1_NOPORT;
3692         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
3693         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
3694                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
3695         err = tcam_write(np, index, tp->key, tp->key_mask);
3696         if (err)
3697                 return err;
3698         err = tcam_assoc_write(np, index, tp->assoc_data);
3699         if (err)
3700                 return err;
3701
3702         return 0;
3703 }
3704
3705 static int niu_init_classifier_hw(struct niu *np)
3706 {
3707         struct niu_parent *parent = np->parent;
3708         struct niu_classifier *cp = &np->clas;
3709         int i, err;
3710
3711         nw64(H1POLY, cp->h1_init);
3712         nw64(H2POLY, cp->h2_init);
3713
3714         err = niu_init_hostinfo(np);
3715         if (err)
3716                 return err;
3717
3718         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
3719                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
3720
3721                 vlan_tbl_write(np, i, np->port,
3722                                vp->vlan_pref, vp->rdc_num);
3723         }
3724
3725         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
3726                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
3727
3728                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
3729                                                 ap->rdc_num, ap->mac_pref);
3730                 if (err)
3731                         return err;
3732         }
3733
3734         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
3735                 int index = i - CLASS_CODE_USER_PROG1;
3736
3737                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
3738                 if (err)
3739                         return err;
3740                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
3741                 if (err)
3742                         return err;
3743         }
3744
3745         err = niu_set_ip_frag_rule(np);
3746         if (err)
3747                 return err;
3748
3749         tcam_enable(np, 1);
3750
3751         return 0;
3752 }
3753
3754 static int niu_zcp_write(struct niu *np, int index, u64 *data)
3755 {
3756         nw64(ZCP_RAM_DATA0, data[0]);
3757         nw64(ZCP_RAM_DATA1, data[1]);
3758         nw64(ZCP_RAM_DATA2, data[2]);
3759         nw64(ZCP_RAM_DATA3, data[3]);
3760         nw64(ZCP_RAM_DATA4, data[4]);
3761         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
3762         nw64(ZCP_RAM_ACC,
3763              (ZCP_RAM_ACC_WRITE |
3764               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3765               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3766
3767         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3768                                    1000, 100);
3769 }
3770
3771 static int niu_zcp_read(struct niu *np, int index, u64 *data)
3772 {
3773         int err;
3774
3775         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3776                                   1000, 100);
3777         if (err) {
3778                 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
3779                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3780                         (unsigned long long) nr64(ZCP_RAM_ACC));
3781                 return err;
3782         }
3783
3784         nw64(ZCP_RAM_ACC,
3785              (ZCP_RAM_ACC_READ |
3786               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3787               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3788
3789         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3790                                   1000, 100);
3791         if (err) {
3792                 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
3793                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3794                         (unsigned long long) nr64(ZCP_RAM_ACC));
3795                 return err;
3796         }
3797
3798         data[0] = nr64(ZCP_RAM_DATA0);
3799         data[1] = nr64(ZCP_RAM_DATA1);
3800         data[2] = nr64(ZCP_RAM_DATA2);
3801         data[3] = nr64(ZCP_RAM_DATA3);
3802         data[4] = nr64(ZCP_RAM_DATA4);
3803
3804         return 0;
3805 }
3806
3807 static void niu_zcp_cfifo_reset(struct niu *np)
3808 {
3809         u64 val = nr64(RESET_CFIFO);
3810
3811         val |= RESET_CFIFO_RST(np->port);
3812         nw64(RESET_CFIFO, val);
3813         udelay(10);
3814
3815         val &= ~RESET_CFIFO_RST(np->port);
3816         nw64(RESET_CFIFO, val);
3817 }
3818
3819 static int niu_init_zcp(struct niu *np)
3820 {
3821         u64 data[5], rbuf[5];
3822         int i, max, err;
3823
3824         if (np->parent->plat_type != PLAT_TYPE_NIU) {
3825                 if (np->port == 0 || np->port == 1)
3826                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
3827                 else
3828                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
3829         } else
3830                 max = NIU_CFIFO_ENTRIES;
3831
3832         data[0] = 0;
3833         data[1] = 0;
3834         data[2] = 0;
3835         data[3] = 0;
3836         data[4] = 0;
3837
3838         for (i = 0; i < max; i++) {
3839                 err = niu_zcp_write(np, i, data);
3840                 if (err)
3841                         return err;
3842                 err = niu_zcp_read(np, i, rbuf);
3843                 if (err)
3844                         return err;
3845         }
3846
3847         niu_zcp_cfifo_reset(np);
3848         nw64(CFIFO_ECC(np->port), 0);
3849         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
3850         (void) nr64(ZCP_INT_STAT);
3851         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
3852
3853         return 0;
3854 }
3855
3856 static void niu_ipp_write(struct niu *np, int index, u64 *data)
3857 {
3858         u64 val = nr64_ipp(IPP_CFIG);
3859
3860         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
3861         nw64_ipp(IPP_DFIFO_WR_PTR, index);
3862         nw64_ipp(IPP_DFIFO_WR0, data[0]);
3863         nw64_ipp(IPP_DFIFO_WR1, data[1]);
3864         nw64_ipp(IPP_DFIFO_WR2, data[2]);
3865         nw64_ipp(IPP_DFIFO_WR3, data[3]);
3866         nw64_ipp(IPP_DFIFO_WR4, data[4]);
3867         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
3868 }
3869
3870 static void niu_ipp_read(struct niu *np, int index, u64 *data)
3871 {
3872         nw64_ipp(IPP_DFIFO_RD_PTR, index);
3873         data[0] = nr64_ipp(IPP_DFIFO_RD0);
3874         data[1] = nr64_ipp(IPP_DFIFO_RD1);
3875         data[2] = nr64_ipp(IPP_DFIFO_RD2);
3876         data[3] = nr64_ipp(IPP_DFIFO_RD3);
3877         data[4] = nr64_ipp(IPP_DFIFO_RD4);
3878 }
3879
3880 static int niu_ipp_reset(struct niu *np)
3881 {
3882         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
3883                                           1000, 100, "IPP_CFIG");
3884 }
3885
3886 static int niu_init_ipp(struct niu *np)
3887 {
3888         u64 data[5], rbuf[5], val;
3889         int i, max, err;
3890
3891         if (np->parent->plat_type != PLAT_TYPE_NIU) {
3892                 if (np->port == 0 || np->port == 1)
3893                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
3894                 else
3895                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
3896         } else
3897                 max = NIU_DFIFO_ENTRIES;
3898
3899         data[0] = 0;
3900         data[1] = 0;
3901         data[2] = 0;
3902         data[3] = 0;
3903         data[4] = 0;
3904
3905         for (i = 0; i < max; i++) {
3906                 niu_ipp_write(np, i, data);
3907                 niu_ipp_read(np, i, rbuf);
3908         }
3909
3910         (void) nr64_ipp(IPP_INT_STAT);
3911         (void) nr64_ipp(IPP_INT_STAT);
3912
3913         err = niu_ipp_reset(np);
3914         if (err)
3915                 return err;
3916
3917         (void) nr64_ipp(IPP_PKT_DIS);
3918         (void) nr64_ipp(IPP_BAD_CS_CNT);
3919         (void) nr64_ipp(IPP_ECC);
3920
3921         (void) nr64_ipp(IPP_INT_STAT);
3922
3923         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
3924
3925         val = nr64_ipp(IPP_CFIG);
3926         val &= ~IPP_CFIG_IP_MAX_PKT;
3927         val |= (IPP_CFIG_IPP_ENABLE |
3928                 IPP_CFIG_DFIFO_ECC_EN |
3929                 IPP_CFIG_DROP_BAD_CRC |
3930                 IPP_CFIG_CKSUM_EN |
3931                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
3932         nw64_ipp(IPP_CFIG, val);
3933
3934         return 0;
3935 }
3936
3937 static void niu_init_xif_xmac(struct niu *np)
3938 {
3939         struct niu_link_config *lp = &np->link_config;
3940         u64 val;
3941
3942         val = nr64_mac(XMAC_CONFIG);
3943
3944         if ((np->flags & NIU_FLAGS_10G) != 0 &&
3945             (np->flags & NIU_FLAGS_FIBER) != 0) {
3946                 if (netif_carrier_ok(np->dev)) {
3947                         val |= XMAC_CONFIG_LED_POLARITY;
3948                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
3949                 } else {
3950                         val |= XMAC_CONFIG_FORCE_LED_ON;
3951                         val &= ~XMAC_CONFIG_LED_POLARITY;
3952                 }
3953         }
3954
3955         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3956
3957         val |= XMAC_CONFIG_TX_OUTPUT_EN;
3958
3959         if (lp->loopback_mode == LOOPBACK_MAC) {
3960                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3961                 val |= XMAC_CONFIG_LOOPBACK;
3962         } else {
3963                 val &= ~XMAC_CONFIG_LOOPBACK;
3964         }
3965
3966         if (np->flags & NIU_FLAGS_10G) {
3967                 val &= ~XMAC_CONFIG_LFS_DISABLE;
3968         } else {
3969                 val |= XMAC_CONFIG_LFS_DISABLE;
3970                 if (!(np->flags & NIU_FLAGS_FIBER))
3971                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
3972                 else
3973                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
3974         }
3975
3976         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
3977
3978         if (lp->active_speed == SPEED_100)
3979                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
3980         else
3981                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
3982
3983         nw64_mac(XMAC_CONFIG, val);
3984
3985         val = nr64_mac(XMAC_CONFIG);
3986         val &= ~XMAC_CONFIG_MODE_MASK;
3987         if (np->flags & NIU_FLAGS_10G) {
3988                 val |= XMAC_CONFIG_MODE_XGMII;
3989         } else {
3990                 if (lp->active_speed == SPEED_100)
3991                         val |= XMAC_CONFIG_MODE_MII;
3992                 else
3993                         val |= XMAC_CONFIG_MODE_GMII;
3994         }
3995
3996         nw64_mac(XMAC_CONFIG, val);
3997 }
3998
3999 static void niu_init_xif_bmac(struct niu *np)
4000 {
4001         struct niu_link_config *lp = &np->link_config;
4002         u64 val;
4003
4004         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
4005
4006         if (lp->loopback_mode == LOOPBACK_MAC)
4007                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
4008         else
4009                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
4010
4011         if (lp->active_speed == SPEED_1000)
4012                 val |= BMAC_XIF_CONFIG_GMII_MODE;
4013         else
4014                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
4015
4016         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
4017                  BMAC_XIF_CONFIG_LED_POLARITY);
4018
4019         if (!(np->flags & NIU_FLAGS_10G) &&
4020             !(np->flags & NIU_FLAGS_FIBER) &&
4021             lp->active_speed == SPEED_100)
4022                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
4023         else
4024                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
4025
4026         nw64_mac(BMAC_XIF_CONFIG, val);
4027 }
4028
4029 static void niu_init_xif(struct niu *np)
4030 {
4031         if (np->flags & NIU_FLAGS_XMAC)
4032                 niu_init_xif_xmac(np);
4033         else
4034                 niu_init_xif_bmac(np);
4035 }
4036
4037 static void niu_pcs_mii_reset(struct niu *np)
4038 {
4039         u64 val = nr64_pcs(PCS_MII_CTL);
4040         val |= PCS_MII_CTL_RST;
4041         nw64_pcs(PCS_MII_CTL, val);
4042 }
4043
4044 static void niu_xpcs_reset(struct niu *np)
4045 {
4046         u64 val = nr64_xpcs(XPCS_CONTROL1);
4047         val |= XPCS_CONTROL1_RESET;
4048         nw64_xpcs(XPCS_CONTROL1, val);
4049 }
4050
4051 static int niu_init_pcs(struct niu *np)
4052 {
4053         struct niu_link_config *lp = &np->link_config;
4054         u64 val;
4055
4056         switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
4057         case NIU_FLAGS_FIBER:
4058                 /* 1G fiber */
4059                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
4060                 nw64_pcs(PCS_DPATH_MODE, 0);
4061                 niu_pcs_mii_reset(np);
4062                 break;
4063
4064         case NIU_FLAGS_10G:
4065         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
4066                 if (!(np->flags & NIU_FLAGS_XMAC))
4067                         return -EINVAL;
4068
4069                 /* 10G copper or fiber */
4070                 val = nr64_mac(XMAC_CONFIG);
4071                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4072                 nw64_mac(XMAC_CONFIG, val);
4073
4074                 niu_xpcs_reset(np);
4075
4076                 val = nr64_xpcs(XPCS_CONTROL1);
4077                 if (lp->loopback_mode == LOOPBACK_PHY)
4078                         val |= XPCS_CONTROL1_LOOPBACK;
4079                 else
4080                         val &= ~XPCS_CONTROL1_LOOPBACK;
4081                 nw64_xpcs(XPCS_CONTROL1, val);
4082
4083                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
4084                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
4085                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
4086                 break;
4087
4088         case 0:
4089                 /* 1G copper */
4090                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
4091                 niu_pcs_mii_reset(np);
4092                 break;
4093
4094         default:
4095                 return -EINVAL;
4096         }
4097
4098         return 0;
4099 }
4100
4101 static int niu_reset_tx_xmac(struct niu *np)
4102 {
4103         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
4104                                           (XTXMAC_SW_RST_REG_RS |
4105                                            XTXMAC_SW_RST_SOFT_RST),
4106                                           1000, 100, "XTXMAC_SW_RST");
4107 }
4108
4109 static int niu_reset_tx_bmac(struct niu *np)
4110 {
4111         int limit;
4112
4113         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
4114         limit = 1000;
4115         while (--limit >= 0) {
4116                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
4117                         break;
4118                 udelay(100);
4119         }
4120         if (limit < 0) {
4121                 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
4122                         "BTXMAC_SW_RST[%llx]\n",
4123                         np->port,
4124                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
4125                 return -ENODEV;
4126         }
4127
4128         return 0;
4129 }
4130
4131 static int niu_reset_tx_mac(struct niu *np)
4132 {
4133         if (np->flags & NIU_FLAGS_XMAC)
4134                 return niu_reset_tx_xmac(np);
4135         else
4136                 return niu_reset_tx_bmac(np);
4137 }
4138
4139 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
4140 {
4141         u64 val;
4142
4143         val = nr64_mac(XMAC_MIN);
4144         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
4145                  XMAC_MIN_RX_MIN_PKT_SIZE);
4146         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
4147         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
4148         nw64_mac(XMAC_MIN, val);
4149
4150         nw64_mac(XMAC_MAX, max);
4151
4152         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
4153
4154         val = nr64_mac(XMAC_IPG);
4155         if (np->flags & NIU_FLAGS_10G) {
4156                 val &= ~XMAC_IPG_IPG_XGMII;
4157                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
4158         } else {
4159                 val &= ~XMAC_IPG_IPG_MII_GMII;
4160                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
4161         }
4162         nw64_mac(XMAC_IPG, val);
4163
4164         val = nr64_mac(XMAC_CONFIG);
4165         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
4166                  XMAC_CONFIG_STRETCH_MODE |
4167                  XMAC_CONFIG_VAR_MIN_IPG_EN |
4168                  XMAC_CONFIG_TX_ENABLE);
4169         nw64_mac(XMAC_CONFIG, val);
4170
4171         nw64_mac(TXMAC_FRM_CNT, 0);
4172         nw64_mac(TXMAC_BYTE_CNT, 0);
4173 }
4174
4175 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
4176 {
4177         u64 val;
4178
4179         nw64_mac(BMAC_MIN_FRAME, min);
4180         nw64_mac(BMAC_MAX_FRAME, max);
4181
4182         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
4183         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
4184         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
4185
4186         val = nr64_mac(BTXMAC_CONFIG);
4187         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
4188                  BTXMAC_CONFIG_ENABLE);
4189         nw64_mac(BTXMAC_CONFIG, val);
4190 }
4191
4192 static void niu_init_tx_mac(struct niu *np)
4193 {
4194         u64 min, max;
4195
4196         min = 64;
4197         if (np->dev->mtu > ETH_DATA_LEN)
4198                 max = 9216;
4199         else
4200                 max = 1522;
4201
4202         /* The XMAC_MIN register only accepts values for TX min which
4203          * have the low 3 bits cleared.
4204          */
4205         BUILD_BUG_ON(min & 0x7);
4206
4207         if (np->flags & NIU_FLAGS_XMAC)
4208                 niu_init_tx_xmac(np, min, max);
4209         else
4210                 niu_init_tx_bmac(np, min, max);
4211 }
4212
4213 static int niu_reset_rx_xmac(struct niu *np)
4214 {
4215         int limit;
4216
4217         nw64_mac(XRXMAC_SW_RST,
4218                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
4219         limit = 1000;
4220         while (--limit >= 0) {
4221                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
4222                                                  XRXMAC_SW_RST_SOFT_RST)))
4223                     break;
4224                 udelay(100);
4225         }
4226         if (limit < 0) {
4227                 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
4228                         "XRXMAC_SW_RST[%llx]\n",
4229                         np->port,
4230                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
4231                 return -ENODEV;
4232         }
4233
4234         return 0;
4235 }
4236
4237 static int niu_reset_rx_bmac(struct niu *np)
4238 {
4239         int limit;
4240
4241         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
4242         limit = 1000;
4243         while (--limit >= 0) {
4244                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
4245                         break;
4246                 udelay(100);
4247         }
4248         if (limit < 0) {
4249                 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
4250                         "BRXMAC_SW_RST[%llx]\n",
4251                         np->port,
4252                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
4253                 return -ENODEV;
4254         }
4255
4256         return 0;
4257 }
4258
4259 static int niu_reset_rx_mac(struct niu *np)
4260 {
4261         if (np->flags & NIU_FLAGS_XMAC)
4262                 return niu_reset_rx_xmac(np);
4263         else
4264                 return niu_reset_rx_bmac(np);
4265 }
4266
4267 static void niu_init_rx_xmac(struct niu *np)
4268 {
4269         struct niu_parent *parent = np->parent;
4270         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4271         int first_rdc_table = tp->first_table_num;
4272         unsigned long i;
4273         u64 val;
4274
4275         nw64_mac(XMAC_ADD_FILT0, 0);
4276         nw64_mac(XMAC_ADD_FILT1, 0);
4277         nw64_mac(XMAC_ADD_FILT2, 0);
4278         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
4279         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
4280         for (i = 0; i < MAC_NUM_HASH; i++)
4281                 nw64_mac(XMAC_HASH_TBL(i), 0);
4282         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
4283         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4284         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4285
4286         val = nr64_mac(XMAC_CONFIG);
4287         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
4288                  XMAC_CONFIG_PROMISCUOUS |
4289                  XMAC_CONFIG_PROMISC_GROUP |
4290                  XMAC_CONFIG_ERR_CHK_DIS |
4291                  XMAC_CONFIG_RX_CRC_CHK_DIS |
4292                  XMAC_CONFIG_RESERVED_MULTICAST |
4293                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
4294                  XMAC_CONFIG_ADDR_FILTER_EN |
4295                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
4296                  XMAC_CONFIG_STRIP_CRC |
4297                  XMAC_CONFIG_PASS_FLOW_CTRL |
4298                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
4299         val |= (XMAC_CONFIG_HASH_FILTER_EN);
4300         nw64_mac(XMAC_CONFIG, val);
4301
4302         nw64_mac(RXMAC_BT_CNT, 0);
4303         nw64_mac(RXMAC_BC_FRM_CNT, 0);
4304         nw64_mac(RXMAC_MC_FRM_CNT, 0);
4305         nw64_mac(RXMAC_FRAG_CNT, 0);
4306         nw64_mac(RXMAC_HIST_CNT1, 0);
4307         nw64_mac(RXMAC_HIST_CNT2, 0);
4308         nw64_mac(RXMAC_HIST_CNT3, 0);
4309         nw64_mac(RXMAC_HIST_CNT4, 0);
4310         nw64_mac(RXMAC_HIST_CNT5, 0);
4311         nw64_mac(RXMAC_HIST_CNT6, 0);
4312         nw64_mac(RXMAC_HIST_CNT7, 0);
4313         nw64_mac(RXMAC_MPSZER_CNT, 0);
4314         nw64_mac(RXMAC_CRC_ER_CNT, 0);
4315         nw64_mac(RXMAC_CD_VIO_CNT, 0);
4316         nw64_mac(LINK_FAULT_CNT, 0);
4317 }
4318
4319 static void niu_init_rx_bmac(struct niu *np)
4320 {
4321         struct niu_parent *parent = np->parent;
4322         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4323         int first_rdc_table = tp->first_table_num;
4324         unsigned long i;
4325         u64 val;
4326
4327         nw64_mac(BMAC_ADD_FILT0, 0);
4328         nw64_mac(BMAC_ADD_FILT1, 0);
4329         nw64_mac(BMAC_ADD_FILT2, 0);
4330         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
4331         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
4332         for (i = 0; i < MAC_NUM_HASH; i++)
4333                 nw64_mac(BMAC_HASH_TBL(i), 0);
4334         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4335         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4336         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
4337
4338         val = nr64_mac(BRXMAC_CONFIG);
4339         val &= ~(BRXMAC_CONFIG_ENABLE |
4340                  BRXMAC_CONFIG_STRIP_PAD |
4341                  BRXMAC_CONFIG_STRIP_FCS |
4342                  BRXMAC_CONFIG_PROMISC |
4343                  BRXMAC_CONFIG_PROMISC_GRP |
4344                  BRXMAC_CONFIG_ADDR_FILT_EN |
4345                  BRXMAC_CONFIG_DISCARD_DIS);
4346         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
4347         nw64_mac(BRXMAC_CONFIG, val);
4348
4349         val = nr64_mac(BMAC_ADDR_CMPEN);
4350         val |= BMAC_ADDR_CMPEN_EN0;
4351         nw64_mac(BMAC_ADDR_CMPEN, val);
4352 }
4353
4354 static void niu_init_rx_mac(struct niu *np)
4355 {
4356         niu_set_primary_mac(np, np->dev->dev_addr);
4357
4358         if (np->flags & NIU_FLAGS_XMAC)
4359                 niu_init_rx_xmac(np);
4360         else
4361                 niu_init_rx_bmac(np);
4362 }
4363
4364 static void niu_enable_tx_xmac(struct niu *np, int on)
4365 {
4366         u64 val = nr64_mac(XMAC_CONFIG);
4367
4368         if (on)
4369                 val |= XMAC_CONFIG_TX_ENABLE;
4370         else
4371                 val &= ~XMAC_CONFIG_TX_ENABLE;
4372         nw64_mac(XMAC_CONFIG, val);
4373 }
4374
4375 static void niu_enable_tx_bmac(struct niu *np, int on)
4376 {
4377         u64 val = nr64_mac(BTXMAC_CONFIG);
4378
4379         if (on)
4380                 val |= BTXMAC_CONFIG_ENABLE;
4381         else
4382                 val &= ~BTXMAC_CONFIG_ENABLE;
4383         nw64_mac(BTXMAC_CONFIG, val);
4384 }
4385
4386 static void niu_enable_tx_mac(struct niu *np, int on)
4387 {
4388         if (np->flags & NIU_FLAGS_XMAC)
4389                 niu_enable_tx_xmac(np, on);
4390         else
4391                 niu_enable_tx_bmac(np, on);
4392 }
4393
4394 static void niu_enable_rx_xmac(struct niu *np, int on)
4395 {
4396         u64 val = nr64_mac(XMAC_CONFIG);
4397
4398         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
4399                  XMAC_CONFIG_PROMISCUOUS);
4400
4401         if (np->flags & NIU_FLAGS_MCAST)
4402                 val |= XMAC_CONFIG_HASH_FILTER_EN;
4403         if (np->flags & NIU_FLAGS_PROMISC)
4404                 val |= XMAC_CONFIG_PROMISCUOUS;
4405
4406         if (on)
4407                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
4408         else
4409                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
4410         nw64_mac(XMAC_CONFIG, val);
4411 }
4412
4413 static void niu_enable_rx_bmac(struct niu *np, int on)
4414 {
4415         u64 val = nr64_mac(BRXMAC_CONFIG);
4416
4417         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
4418                  BRXMAC_CONFIG_PROMISC);
4419
4420         if (np->flags & NIU_FLAGS_MCAST)
4421                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
4422         if (np->flags & NIU_FLAGS_PROMISC)
4423                 val |= BRXMAC_CONFIG_PROMISC;
4424
4425         if (on)
4426                 val |= BRXMAC_CONFIG_ENABLE;
4427         else
4428                 val &= ~BRXMAC_CONFIG_ENABLE;
4429         nw64_mac(BRXMAC_CONFIG, val);
4430 }
4431
4432 static void niu_enable_rx_mac(struct niu *np, int on)
4433 {
4434         if (np->flags & NIU_FLAGS_XMAC)
4435                 niu_enable_rx_xmac(np, on);
4436         else
4437                 niu_enable_rx_bmac(np, on);
4438 }
4439
4440 static int niu_init_mac(struct niu *np)
4441 {
4442         int err;
4443
4444         niu_init_xif(np);
4445         err = niu_init_pcs(np);
4446         if (err)
4447                 return err;
4448
4449         err = niu_reset_tx_mac(np);
4450         if (err)
4451                 return err;
4452         niu_init_tx_mac(np);
4453         err = niu_reset_rx_mac(np);
4454         if (err)
4455                 return err;
4456         niu_init_rx_mac(np);
4457
4458         /* This looks hookey but the RX MAC reset we just did will
4459          * undo some of the state we setup in niu_init_tx_mac() so we
4460          * have to call it again.  In particular, the RX MAC reset will
4461          * set the XMAC_MAX register back to it's default value.
4462          */
4463         niu_init_tx_mac(np);
4464         niu_enable_tx_mac(np, 1);
4465
4466         niu_enable_rx_mac(np, 1);
4467
4468         return 0;
4469 }
4470
4471 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4472 {
4473         (void) niu_tx_channel_stop(np, rp->tx_channel);
4474 }
4475
4476 static void niu_stop_tx_channels(struct niu *np)
4477 {
4478         int i;
4479
4480         for (i = 0; i < np->num_tx_rings; i++) {
4481                 struct tx_ring_info *rp = &np->tx_rings[i];
4482
4483                 niu_stop_one_tx_channel(np, rp);
4484         }
4485 }
4486
4487 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4488 {
4489         (void) niu_tx_channel_reset(np, rp->tx_channel);
4490 }
4491
4492 static void niu_reset_tx_channels(struct niu *np)
4493 {
4494         int i;
4495
4496         for (i = 0; i < np->num_tx_rings; i++) {
4497                 struct tx_ring_info *rp = &np->tx_rings[i];
4498
4499                 niu_reset_one_tx_channel(np, rp);
4500         }
4501 }
4502
4503 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4504 {
4505         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
4506 }
4507
4508 static void niu_stop_rx_channels(struct niu *np)
4509 {
4510         int i;
4511
4512         for (i = 0; i < np->num_rx_rings; i++) {
4513                 struct rx_ring_info *rp = &np->rx_rings[i];
4514
4515                 niu_stop_one_rx_channel(np, rp);
4516         }
4517 }
4518
4519 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4520 {
4521         int channel = rp->rx_channel;
4522
4523         (void) niu_rx_channel_reset(np, channel);
4524         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
4525         nw64(RX_DMA_CTL_STAT(channel), 0);
4526         (void) niu_enable_rx_channel(np, channel, 0);
4527 }
4528
4529 static void niu_reset_rx_channels(struct niu *np)
4530 {
4531         int i;
4532
4533         for (i = 0; i < np->num_rx_rings; i++) {
4534                 struct rx_ring_info *rp = &np->rx_rings[i];
4535
4536                 niu_reset_one_rx_channel(np, rp);
4537         }
4538 }
4539
4540 static void niu_disable_ipp(struct niu *np)
4541 {
4542         u64 rd, wr, val;
4543         int limit;
4544
4545         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4546         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4547         limit = 100;
4548         while (--limit >= 0 && (rd != wr)) {
4549                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4550                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4551         }
4552         if (limit < 0 &&
4553             (rd != 0 && wr != 1)) {
4554                 dev_err(np->device, PFX "%s: IPP would not quiesce, "
4555                         "rd_ptr[%llx] wr_ptr[%llx]\n",
4556                         np->dev->name,
4557                         (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
4558                         (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
4559         }
4560
4561         val = nr64_ipp(IPP_CFIG);
4562         val &= ~(IPP_CFIG_IPP_ENABLE |
4563                  IPP_CFIG_DFIFO_ECC_EN |
4564                  IPP_CFIG_DROP_BAD_CRC |
4565                  IPP_CFIG_CKSUM_EN);
4566         nw64_ipp(IPP_CFIG, val);
4567
4568         (void) niu_ipp_reset(np);
4569 }
4570
4571 static int niu_init_hw(struct niu *np)
4572 {
4573         int i, err;
4574
4575         niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
4576         niu_txc_enable_port(np, 1);
4577         niu_txc_port_dma_enable(np, 1);
4578         niu_txc_set_imask(np, 0);
4579
4580         niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
4581         for (i = 0; i < np->num_tx_rings; i++) {
4582                 struct tx_ring_info *rp = &np->tx_rings[i];
4583
4584                 err = niu_init_one_tx_channel(np, rp);
4585                 if (err)
4586                         return err;
4587         }
4588
4589         niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
4590         err = niu_init_rx_channels(np);
4591         if (err)
4592                 goto out_uninit_tx_channels;
4593
4594         niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
4595         err = niu_init_classifier_hw(np);
4596         if (err)
4597                 goto out_uninit_rx_channels;
4598
4599         niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
4600         err = niu_init_zcp(np);
4601         if (err)
4602                 goto out_uninit_rx_channels;
4603
4604         niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
4605         err = niu_init_ipp(np);
4606         if (err)
4607                 goto out_uninit_rx_channels;
4608
4609         niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
4610         err = niu_init_mac(np);
4611         if (err)
4612                 goto out_uninit_ipp;
4613
4614         return 0;
4615
4616 out_uninit_ipp:
4617         niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
4618         niu_disable_ipp(np);
4619
4620 out_uninit_rx_channels:
4621         niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
4622         niu_stop_rx_channels(np);
4623         niu_reset_rx_channels(np);
4624
4625 out_uninit_tx_channels:
4626         niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
4627         niu_stop_tx_channels(np);
4628         niu_reset_tx_channels(np);
4629
4630         return err;
4631 }
4632
4633 static void niu_stop_hw(struct niu *np)
4634 {
4635         niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
4636         niu_enable_interrupts(np, 0);
4637
4638         niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
4639         niu_enable_rx_mac(np, 0);
4640
4641         niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
4642         niu_disable_ipp(np);
4643
4644         niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
4645         niu_stop_tx_channels(np);
4646
4647         niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
4648         niu_stop_rx_channels(np);
4649
4650         niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
4651         niu_reset_tx_channels(np);
4652
4653         niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
4654         niu_reset_rx_channels(np);
4655 }
4656
4657 static int niu_request_irq(struct niu *np)
4658 {
4659         int i, j, err;
4660
4661         err = 0;
4662         for (i = 0; i < np->num_ldg; i++) {
4663                 struct niu_ldg *lp = &np->ldg[i];
4664
4665                 err = request_irq(lp->irq, niu_interrupt,
4666                                   IRQF_SHARED | IRQF_SAMPLE_RANDOM,
4667                                   np->dev->name, lp);
4668                 if (err)
4669                         goto out_free_irqs;
4670
4671         }
4672
4673         return 0;
4674
4675 out_free_irqs:
4676         for (j = 0; j < i; j++) {
4677                 struct niu_ldg *lp = &np->ldg[j];
4678
4679                 free_irq(lp->irq, lp);
4680         }
4681         return err;
4682 }
4683
4684 static void niu_free_irq(struct niu *np)
4685 {
4686         int i;
4687
4688         for (i = 0; i < np->num_ldg; i++) {
4689                 struct niu_ldg *lp = &np->ldg[i];
4690
4691                 free_irq(lp->irq, lp);
4692         }
4693 }
4694
4695 static void niu_enable_napi(struct niu *np)
4696 {
4697         int i;
4698
4699         for (i = 0; i < np->num_ldg; i++)
4700                 napi_enable(&np->ldg[i].napi);
4701 }
4702
4703 static void niu_disable_napi(struct niu *np)
4704 {
4705         int i;
4706
4707         for (i = 0; i < np->num_ldg; i++)
4708                 napi_disable(&np->ldg[i].napi);
4709 }
4710
4711 static int niu_open(struct net_device *dev)
4712 {
4713         struct niu *np = netdev_priv(dev);
4714         int err;
4715
4716         netif_carrier_off(dev);
4717
4718         err = niu_alloc_channels(np);
4719         if (err)
4720                 goto out_err;
4721
4722         err = niu_enable_interrupts(np, 0);
4723         if (err)
4724                 goto out_free_channels;
4725
4726         err = niu_request_irq(np);
4727         if (err)
4728                 goto out_free_channels;
4729
4730         niu_enable_napi(np);
4731
4732         spin_lock_irq(&np->lock);
4733
4734         err = niu_init_hw(np);
4735         if (!err) {
4736                 init_timer(&np->timer);
4737                 np->timer.expires = jiffies + HZ;
4738                 np->timer.data = (unsigned long) np;
4739                 np->timer.function = niu_timer;
4740
4741                 err = niu_enable_interrupts(np, 1);
4742                 if (err)
4743                         niu_stop_hw(np);
4744         }
4745
4746         spin_unlock_irq(&np->lock);
4747
4748         if (err) {
4749                 niu_disable_napi(np);
4750                 goto out_free_irq;
4751         }
4752
4753         netif_start_queue(dev);
4754
4755         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
4756                 netif_carrier_on(dev);
4757
4758         add_timer(&np->timer);
4759
4760         return 0;
4761
4762 out_free_irq:
4763         niu_free_irq(np);
4764
4765 out_free_channels:
4766         niu_free_channels(np);
4767
4768 out_err:
4769         return err;
4770 }
4771
4772 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
4773 {
4774         cancel_work_sync(&np->reset_task);
4775
4776         niu_disable_napi(np);
4777         netif_stop_queue(dev);
4778
4779         del_timer_sync(&np->timer);
4780
4781         spin_lock_irq(&np->lock);
4782
4783         niu_stop_hw(np);
4784
4785         spin_unlock_irq(&np->lock);
4786 }
4787
4788 static int niu_close(struct net_device *dev)
4789 {
4790         struct niu *np = netdev_priv(dev);
4791
4792         niu_full_shutdown(np, dev);
4793
4794         niu_free_irq(np);
4795
4796         niu_free_channels(np);
4797
4798         return 0;
4799 }
4800
4801 static void niu_sync_xmac_stats(struct niu *np)
4802 {
4803         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
4804
4805         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
4806         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
4807
4808         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
4809         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
4810         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
4811         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
4812         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
4813         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
4814         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
4815         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
4816         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
4817         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
4818         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
4819         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
4820         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
4821         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
4822         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
4823         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
4824 }
4825
4826 static void niu_sync_bmac_stats(struct niu *np)
4827 {
4828         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4829
4830         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
4831         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
4832
4833         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
4834         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4835         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4836         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
4837 }
4838
4839 static void niu_sync_mac_stats(struct niu *np)
4840 {
4841         if (np->flags & NIU_FLAGS_XMAC)
4842                 niu_sync_xmac_stats(np);
4843         else
4844                 niu_sync_bmac_stats(np);
4845 }
4846
4847 static void niu_get_rx_stats(struct niu *np)
4848 {
4849         unsigned long pkts, dropped, errors, bytes;
4850         int i;
4851
4852         pkts = dropped = errors = bytes = 0;
4853         for (i = 0; i < np->num_rx_rings; i++) {
4854                 struct rx_ring_info *rp = &np->rx_rings[i];
4855
4856                 pkts += rp->rx_packets;
4857                 bytes += rp->rx_bytes;
4858                 dropped += rp->rx_dropped;
4859                 errors += rp->rx_errors;
4860         }
4861         np->net_stats.rx_packets = pkts;
4862         np->net_stats.rx_bytes = bytes;
4863         np->net_stats.rx_dropped = dropped;
4864         np->net_stats.rx_errors = errors;
4865 }
4866
4867 static void niu_get_tx_stats(struct niu *np)
4868 {
4869         unsigned long pkts, errors, bytes;
4870         int i;
4871
4872         pkts = errors = bytes = 0;
4873         for (i = 0; i < np->num_tx_rings; i++) {
4874                 struct tx_ring_info *rp = &np->tx_rings[i];
4875
4876                 pkts += rp->tx_packets;
4877                 bytes += rp->tx_bytes;
4878                 errors += rp->tx_errors;
4879         }
4880         np->net_stats.tx_packets = pkts;
4881         np->net_stats.tx_bytes = bytes;
4882         np->net_stats.tx_errors = errors;
4883 }
4884
4885 static struct net_device_stats *niu_get_stats(struct net_device *dev)
4886 {
4887         struct niu *np = netdev_priv(dev);
4888
4889         niu_get_rx_stats(np);
4890         niu_get_tx_stats(np);
4891
4892         return &np->net_stats;
4893 }
4894
4895 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
4896 {
4897         int i;
4898
4899         for (i = 0; i < 16; i++)
4900                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
4901 }
4902
4903 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
4904 {
4905         int i;
4906
4907         for (i = 0; i < 16; i++)
4908                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
4909 }
4910
4911 static void niu_load_hash(struct niu *np, u16 *hash)
4912 {
4913         if (np->flags & NIU_FLAGS_XMAC)
4914                 niu_load_hash_xmac(np, hash);
4915         else
4916                 niu_load_hash_bmac(np, hash);
4917 }
4918
4919 static void niu_set_rx_mode(struct net_device *dev)
4920 {
4921         struct niu *np = netdev_priv(dev);
4922         int i, alt_cnt, err;
4923         struct dev_addr_list *addr;
4924         unsigned long flags;
4925         u16 hash[16] = { 0, };
4926
4927         spin_lock_irqsave(&np->lock, flags);
4928         niu_enable_rx_mac(np, 0);
4929
4930         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
4931         if (dev->flags & IFF_PROMISC)
4932                 np->flags |= NIU_FLAGS_PROMISC;
4933         if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
4934                 np->flags |= NIU_FLAGS_MCAST;
4935
4936         alt_cnt = dev->uc_count;
4937         if (alt_cnt > niu_num_alt_addr(np)) {
4938                 alt_cnt = 0;
4939                 np->flags |= NIU_FLAGS_PROMISC;
4940         }
4941
4942         if (alt_cnt) {
4943                 int index = 0;
4944
4945                 for (addr = dev->uc_list; addr; addr = addr->next) {
4946                         err = niu_set_alt_mac(np, index,
4947                                               addr->da_addr);
4948                         if (err)
4949                                 printk(KERN_WARNING PFX "%s: Error %d "
4950                                        "adding alt mac %d\n",
4951                                        dev->name, err, index);
4952                         err = niu_enable_alt_mac(np, index, 1);
4953                         if (err)
4954                                 printk(KERN_WARNING PFX "%s: Error %d "
4955                                        "enabling alt mac %d\n",
4956                                        dev->name, err, index);
4957
4958                         index++;
4959                 }
4960         } else {
4961                 for (i = 0; i < niu_num_alt_addr(np); i++) {
4962                         err = niu_enable_alt_mac(np, i, 0);
4963                         if (err)
4964                                 printk(KERN_WARNING PFX "%s: Error %d "
4965                                        "disabling alt mac %d\n",
4966                                        dev->name, err, i);
4967                 }
4968         }
4969         if (dev->flags & IFF_ALLMULTI) {
4970                 for (i = 0; i < 16; i++)
4971                         hash[i] = 0xffff;
4972         } else if (dev->mc_count > 0) {
4973                 for (addr = dev->mc_list; addr; addr = addr->next) {
4974                         u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
4975
4976                         crc >>= 24;
4977                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
4978                 }
4979         }
4980
4981         if (np->flags & NIU_FLAGS_MCAST)
4982                 niu_load_hash(np, hash);
4983
4984         niu_enable_rx_mac(np, 1);
4985         spin_unlock_irqrestore(&np->lock, flags);
4986 }
4987
4988 static int niu_set_mac_addr(struct net_device *dev, void *p)
4989 {
4990         struct niu *np = netdev_priv(dev);
4991         struct sockaddr *addr = p;
4992         unsigned long flags;
4993
4994         if (!is_valid_ether_addr(addr->sa_data))
4995                 return -EINVAL;
4996
4997         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
4998
4999         if (!netif_running(dev))
5000                 return 0;
5001
5002         spin_lock_irqsave(&np->lock, flags);
5003         niu_enable_rx_mac(np, 0);
5004         niu_set_primary_mac(np, dev->dev_addr);
5005         niu_enable_rx_mac(np, 1);
5006         spin_unlock_irqrestore(&np->lock, flags);
5007
5008         return 0;
5009 }
5010
5011 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
5012 {
5013         return -EOPNOTSUPP;
5014 }
5015
5016 static void niu_netif_stop(struct niu *np)
5017 {
5018         np->dev->trans_start = jiffies; /* prevent tx timeout */
5019
5020         niu_disable_napi(np);
5021
5022         netif_tx_disable(np->dev);
5023 }
5024
5025 static void niu_netif_start(struct niu *np)
5026 {
5027         /* NOTE: unconditional netif_wake_queue is only appropriate
5028          * so long as all callers are assured to have free tx slots
5029          * (such as after niu_init_hw).
5030          */
5031         netif_wake_queue(np->dev);
5032
5033         niu_enable_napi(np);
5034
5035         niu_enable_interrupts(np, 1);
5036 }
5037
5038 static void niu_reset_task(struct work_struct *work)
5039 {
5040         struct niu *np = container_of(work, struct niu, reset_task);
5041         unsigned long flags;
5042         int err;
5043
5044         spin_lock_irqsave(&np->lock, flags);
5045         if (!netif_running(np->dev)) {
5046                 spin_unlock_irqrestore(&np->lock, flags);
5047                 return;
5048         }
5049
5050         spin_unlock_irqrestore(&np->lock, flags);
5051
5052         del_timer_sync(&np->timer);
5053
5054         niu_netif_stop(np);
5055
5056         spin_lock_irqsave(&np->lock, flags);
5057
5058         niu_stop_hw(np);
5059
5060         err = niu_init_hw(np);
5061         if (!err) {
5062                 np->timer.expires = jiffies + HZ;
5063                 add_timer(&np->timer);
5064                 niu_netif_start(np);
5065         }
5066
5067         spin_unlock_irqrestore(&np->lock, flags);
5068 }
5069
5070 static void niu_tx_timeout(struct net_device *dev)
5071 {
5072         struct niu *np = netdev_priv(dev);
5073
5074         dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
5075                 dev->name);
5076
5077         schedule_work(&np->reset_task);
5078 }
5079
5080 static void niu_set_txd(struct tx_ring_info *rp, int index,
5081                         u64 mapping, u64 len, u64 mark,
5082                         u64 n_frags)
5083 {
5084         __le64 *desc = &rp->descr[index];
5085
5086         *desc = cpu_to_le64(mark |
5087                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
5088                             (len << TX_DESC_TR_LEN_SHIFT) |
5089                             (mapping & TX_DESC_SAD));
5090 }
5091
5092 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
5093                                 u64 pad_bytes, u64 len)
5094 {
5095         u16 eth_proto, eth_proto_inner;
5096         u64 csum_bits, l3off, ihl, ret;
5097         u8 ip_proto;
5098         int ipv6;
5099
5100         eth_proto = be16_to_cpu(ehdr->h_proto);
5101         eth_proto_inner = eth_proto;
5102         if (eth_proto == ETH_P_8021Q) {
5103                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
5104                 __be16 val = vp->h_vlan_encapsulated_proto;
5105
5106                 eth_proto_inner = be16_to_cpu(val);
5107         }
5108
5109         ipv6 = ihl = 0;
5110         switch (skb->protocol) {
5111         case __constant_htons(ETH_P_IP):
5112                 ip_proto = ip_hdr(skb)->protocol;
5113                 ihl = ip_hdr(skb)->ihl;
5114                 break;
5115         case __constant_htons(ETH_P_IPV6):
5116                 ip_proto = ipv6_hdr(skb)->nexthdr;
5117                 ihl = (40 >> 2);
5118                 ipv6 = 1;
5119                 break;
5120         default:
5121                 ip_proto = ihl = 0;
5122                 break;
5123         }
5124
5125         csum_bits = TXHDR_CSUM_NONE;
5126         if (skb->ip_summed == CHECKSUM_PARTIAL) {
5127                 u64 start, stuff;
5128
5129                 csum_bits = (ip_proto == IPPROTO_TCP ?
5130                              TXHDR_CSUM_TCP :
5131                              (ip_proto == IPPROTO_UDP ?
5132                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
5133
5134                 start = skb_transport_offset(skb) -
5135                         (pad_bytes + sizeof(struct tx_pkt_hdr));
5136                 stuff = start + skb->csum_offset;
5137
5138                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
5139                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
5140         }
5141
5142         l3off = skb_network_offset(skb) -
5143                 (pad_bytes + sizeof(struct tx_pkt_hdr));
5144
5145         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
5146                (len << TXHDR_LEN_SHIFT) |
5147                ((l3off / 2) << TXHDR_L3START_SHIFT) |
5148                (ihl << TXHDR_IHL_SHIFT) |
5149                ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
5150                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
5151                (ipv6 ? TXHDR_IP_VER : 0) |
5152                csum_bits);
5153
5154         return ret;
5155 }
5156
5157 static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
5158 {
5159         return &np->tx_rings[0];
5160 }
5161
5162 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
5163 {
5164         struct niu *np = netdev_priv(dev);
5165         unsigned long align, headroom;
5166         struct tx_ring_info *rp;
5167         struct tx_pkt_hdr *tp;
5168         unsigned int len, nfg;
5169         struct ethhdr *ehdr;
5170         int prod, i, tlen;
5171         u64 mapping, mrk;
5172
5173         rp = tx_ring_select(np, skb);
5174
5175         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
5176                 netif_stop_queue(dev);
5177                 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
5178                         "queue awake!\n", dev->name);
5179                 rp->tx_errors++;
5180                 return NETDEV_TX_BUSY;
5181         }
5182
5183         if (skb->len < ETH_ZLEN) {
5184                 unsigned int pad_bytes = ETH_ZLEN - skb->len;
5185
5186                 if (skb_pad(skb, pad_bytes))
5187                         goto out;
5188                 skb_put(skb, pad_bytes);
5189         }
5190
5191         len = sizeof(struct tx_pkt_hdr) + 15;
5192         if (skb_headroom(skb) < len) {
5193                 struct sk_buff *skb_new;
5194
5195                 skb_new = skb_realloc_headroom(skb, len);
5196                 if (!skb_new) {
5197                         rp->tx_errors++;
5198                         goto out_drop;
5199                 }
5200                 kfree_skb(skb);
5201                 skb = skb_new;
5202         }
5203
5204         align = ((unsigned long) skb->data & (16 - 1));
5205         headroom = align + sizeof(struct tx_pkt_hdr);
5206
5207         ehdr = (struct ethhdr *) skb->data;
5208         tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
5209
5210         len = skb->len - sizeof(struct tx_pkt_hdr);
5211         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
5212         tp->resv = 0;
5213
5214         len = skb_headlen(skb);
5215         mapping = np->ops->map_single(np->device, skb->data,
5216                                       len, DMA_TO_DEVICE);
5217
5218         prod = rp->prod;
5219
5220         rp->tx_buffs[prod].skb = skb;
5221         rp->tx_buffs[prod].mapping = mapping;
5222
5223         mrk = TX_DESC_SOP;
5224         if (++rp->mark_counter == rp->mark_freq) {
5225                 rp->mark_counter = 0;
5226                 mrk |= TX_DESC_MARK;
5227                 rp->mark_pending++;
5228         }
5229
5230         tlen = len;
5231         nfg = skb_shinfo(skb)->nr_frags;
5232         while (tlen > 0) {
5233                 tlen -= MAX_TX_DESC_LEN;
5234                 nfg++;
5235         }
5236
5237         while (len > 0) {
5238                 unsigned int this_len = len;
5239
5240                 if (this_len > MAX_TX_DESC_LEN)
5241                         this_len = MAX_TX_DESC_LEN;
5242
5243                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
5244                 mrk = nfg = 0;
5245
5246                 prod = NEXT_TX(rp, prod);
5247                 mapping += this_len;
5248                 len -= this_len;
5249         }
5250
5251         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
5252                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
5253
5254                 len = frag->size;
5255                 mapping = np->ops->map_page(np->device, frag->page,
5256                                             frag->page_offset, len,
5257                                             DMA_TO_DEVICE);
5258
5259                 rp->tx_buffs[prod].skb = NULL;
5260                 rp->tx_buffs[prod].mapping = mapping;
5261
5262                 niu_set_txd(rp, prod, mapping, len, 0, 0);
5263
5264                 prod = NEXT_TX(rp, prod);
5265         }
5266
5267         if (prod < rp->prod)
5268                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
5269         rp->prod = prod;
5270
5271         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
5272
5273         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
5274                 netif_stop_queue(dev);
5275                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
5276                         netif_wake_queue(dev);
5277         }
5278
5279         dev->trans_start = jiffies;
5280
5281 out:
5282         return NETDEV_TX_OK;
5283
5284 out_drop:
5285         rp->tx_errors++;
5286         kfree_skb(skb);
5287         goto out;
5288 }
5289
5290 static int niu_change_mtu(struct net_device *dev, int new_mtu)
5291 {
5292         struct niu *np = netdev_priv(dev);
5293         int err, orig_jumbo, new_jumbo;
5294
5295         if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
5296                 return -EINVAL;
5297
5298         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
5299         new_jumbo = (new_mtu > ETH_DATA_LEN);
5300
5301         dev->mtu = new_mtu;
5302
5303         if (!netif_running(dev) ||
5304             (orig_jumbo == new_jumbo))
5305                 return 0;
5306
5307         niu_full_shutdown(np, dev);
5308
5309         niu_free_channels(np);
5310
5311         niu_enable_napi(np);
5312
5313         err = niu_alloc_channels(np);
5314         if (err)
5315                 return err;
5316
5317         spin_lock_irq(&np->lock);
5318
5319         err = niu_init_hw(np);
5320         if (!err) {
5321                 init_timer(&np->timer);
5322                 np->timer.expires = jiffies + HZ;
5323                 np->timer.data = (unsigned long) np;
5324                 np->timer.function = niu_timer;
5325
5326                 err = niu_enable_interrupts(np, 1);
5327                 if (err)
5328                         niu_stop_hw(np);
5329         }
5330
5331         spin_unlock_irq(&np->lock);
5332
5333         if (!err) {
5334                 netif_start_queue(dev);
5335                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
5336                         netif_carrier_on(dev);
5337
5338                 add_timer(&np->timer);
5339         }
5340
5341         return err;
5342 }
5343
5344 static void niu_get_drvinfo(struct net_device *dev,
5345                             struct ethtool_drvinfo *info)
5346 {
5347         struct niu *np = netdev_priv(dev);
5348         struct niu_vpd *vpd = &np->vpd;
5349
5350         strcpy(info->driver, DRV_MODULE_NAME);
5351         strcpy(info->version, DRV_MODULE_VERSION);
5352         sprintf(info->fw_version, "%d.%d",
5353                 vpd->fcode_major, vpd->fcode_minor);
5354         if (np->parent->plat_type != PLAT_TYPE_NIU)
5355                 strcpy(info->bus_info, pci_name(np->pdev));
5356 }
5357
5358 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5359 {
5360         struct niu *np = netdev_priv(dev);
5361         struct niu_link_config *lp;
5362
5363         lp = &np->link_config;
5364
5365         memset(cmd, 0, sizeof(*cmd));
5366         cmd->phy_address = np->phy_addr;
5367         cmd->supported = lp->supported;
5368         cmd->advertising = lp->advertising;
5369         cmd->autoneg = lp->autoneg;
5370         cmd->speed = lp->active_speed;
5371         cmd->duplex = lp->active_duplex;
5372
5373         return 0;
5374 }
5375
5376 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5377 {
5378         return -EINVAL;
5379 }
5380
5381 static u32 niu_get_msglevel(struct net_device *dev)
5382 {
5383         struct niu *np = netdev_priv(dev);
5384         return np->msg_enable;
5385 }
5386
5387 static void niu_set_msglevel(struct net_device *dev, u32 value)
5388 {
5389         struct niu *np = netdev_priv(dev);
5390         np->msg_enable = value;
5391 }
5392
5393 static int niu_get_eeprom_len(struct net_device *dev)
5394 {
5395         struct niu *np = netdev_priv(dev);
5396
5397         return np->eeprom_len;
5398 }
5399
5400 static int niu_get_eeprom(struct net_device *dev,
5401                           struct ethtool_eeprom *eeprom, u8 *data)
5402 {
5403         struct niu *np = netdev_priv(dev);
5404         u32 offset, len, val;
5405
5406         offset = eeprom->offset;
5407         len = eeprom->len;
5408
5409         if (offset + len < offset)
5410                 return -EINVAL;
5411         if (offset >= np->eeprom_len)
5412                 return -EINVAL;
5413         if (offset + len > np->eeprom_len)
5414                 len = eeprom->len = np->eeprom_len - offset;
5415
5416         if (offset & 3) {
5417                 u32 b_offset, b_count;
5418
5419                 b_offset = offset & 3;
5420                 b_count = 4 - b_offset;
5421                 if (b_count > len)
5422                         b_count = len;
5423
5424                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
5425                 memcpy(data, ((char *)&val) + b_offset, b_count);
5426                 data += b_count;
5427                 len -= b_count;
5428                 offset += b_count;
5429         }
5430         while (len >= 4) {
5431                 val = nr64(ESPC_NCR(offset / 4));
5432                 memcpy(data, &val, 4);
5433                 data += 4;
5434                 len -= 4;
5435                 offset += 4;
5436         }
5437         if (len) {
5438                 val = nr64(ESPC_NCR(offset / 4));
5439                 memcpy(data, &val, len);
5440         }
5441         return 0;
5442 }
5443
5444 static const struct {
5445         const char string[ETH_GSTRING_LEN];
5446 } niu_xmac_stat_keys[] = {
5447         { "tx_frames" },
5448         { "tx_bytes" },
5449         { "tx_fifo_errors" },
5450         { "tx_overflow_errors" },
5451         { "tx_max_pkt_size_errors" },
5452         { "tx_underflow_errors" },
5453         { "rx_local_faults" },
5454         { "rx_remote_faults" },
5455         { "rx_link_faults" },
5456         { "rx_align_errors" },
5457         { "rx_frags" },
5458         { "rx_mcasts" },
5459         { "rx_bcasts" },
5460         { "rx_hist_cnt1" },
5461         { "rx_hist_cnt2" },
5462         { "rx_hist_cnt3" },
5463         { "rx_hist_cnt4" },
5464         { "rx_hist_cnt5" },
5465         { "rx_hist_cnt6" },
5466         { "rx_hist_cnt7" },
5467         { "rx_octets" },
5468         { "rx_code_violations" },
5469         { "rx_len_errors" },
5470         { "rx_crc_errors" },
5471         { "rx_underflows" },
5472         { "rx_overflows" },
5473         { "pause_off_state" },
5474         { "pause_on_state" },
5475         { "pause_received" },
5476 };
5477
5478 #define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
5479
5480 static const struct {
5481         const char string[ETH_GSTRING_LEN];
5482 } niu_bmac_stat_keys[] = {
5483         { "tx_underflow_errors" },
5484         { "tx_max_pkt_size_errors" },
5485         { "tx_bytes" },
5486         { "tx_frames" },
5487         { "rx_overflows" },
5488         { "rx_frames" },
5489         { "rx_align_errors" },
5490         { "rx_crc_errors" },
5491         { "rx_len_errors" },
5492         { "pause_off_state" },
5493         { "pause_on_state" },
5494         { "pause_received" },
5495 };
5496
5497 #define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
5498
5499 static const struct {
5500         const char string[ETH_GSTRING_LEN];
5501 } niu_rxchan_stat_keys[] = {
5502         { "rx_channel" },
5503         { "rx_packets" },
5504         { "rx_bytes" },
5505         { "rx_dropped" },
5506         { "rx_errors" },
5507 };
5508
5509 #define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
5510
5511 static const struct {
5512         const char string[ETH_GSTRING_LEN];
5513 } niu_txchan_stat_keys[] = {
5514         { "tx_channel" },
5515         { "tx_packets" },
5516         { "tx_bytes" },
5517         { "tx_errors" },
5518 };
5519
5520 #define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
5521
5522 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5523 {
5524         struct niu *np = netdev_priv(dev);
5525         int i;
5526
5527         if (stringset != ETH_SS_STATS)
5528                 return;
5529
5530         if (np->flags & NIU_FLAGS_XMAC) {
5531                 memcpy(data, niu_xmac_stat_keys,
5532                        sizeof(niu_xmac_stat_keys));
5533                 data += sizeof(niu_xmac_stat_keys);
5534         } else {
5535                 memcpy(data, niu_bmac_stat_keys,
5536                        sizeof(niu_bmac_stat_keys));
5537                 data += sizeof(niu_bmac_stat_keys);
5538         }
5539         for (i = 0; i < np->num_rx_rings; i++) {
5540                 memcpy(data, niu_rxchan_stat_keys,
5541                        sizeof(niu_rxchan_stat_keys));
5542                 data += sizeof(niu_rxchan_stat_keys);
5543         }
5544         for (i = 0; i < np->num_tx_rings; i++) {
5545                 memcpy(data, niu_txchan_stat_keys,
5546                        sizeof(niu_txchan_stat_keys));
5547                 data += sizeof(niu_txchan_stat_keys);
5548         }
5549 }
5550
5551 static int niu_get_stats_count(struct net_device *dev)
5552 {
5553         struct niu *np = netdev_priv(dev);
5554
5555         return ((np->flags & NIU_FLAGS_XMAC ?
5556                  NUM_XMAC_STAT_KEYS :
5557                  NUM_BMAC_STAT_KEYS) +
5558                 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
5559                 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
5560 }
5561
5562 static void niu_get_ethtool_stats(struct net_device *dev,
5563                                   struct ethtool_stats *stats, u64 *data)
5564 {
5565         struct niu *np = netdev_priv(dev);
5566         int i;
5567
5568         niu_sync_mac_stats(np);
5569         if (np->flags & NIU_FLAGS_XMAC) {
5570                 memcpy(data, &np->mac_stats.xmac,
5571                        sizeof(struct niu_xmac_stats));
5572                 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
5573         } else {
5574                 memcpy(data, &np->mac_stats.bmac,
5575                        sizeof(struct niu_bmac_stats));
5576                 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
5577         }
5578         for (i = 0; i < np->num_rx_rings; i++) {
5579                 struct rx_ring_info *rp = &np->rx_rings[i];
5580
5581                 data[0] = rp->rx_channel;
5582                 data[1] = rp->rx_packets;
5583                 data[2] = rp->rx_bytes;
5584                 data[3] = rp->rx_dropped;
5585                 data[4] = rp->rx_errors;
5586                 data += 5;
5587         }
5588         for (i = 0; i < np->num_tx_rings; i++) {
5589                 struct tx_ring_info *rp = &np->tx_rings[i];
5590
5591                 data[0] = rp->tx_channel;
5592                 data[1] = rp->tx_packets;
5593                 data[2] = rp->tx_bytes;
5594                 data[3] = rp->tx_errors;
5595                 data += 4;
5596         }
5597 }
5598
5599 static u64 niu_led_state_save(struct niu *np)
5600 {
5601         if (np->flags & NIU_FLAGS_XMAC)
5602                 return nr64_mac(XMAC_CONFIG);
5603         else
5604                 return nr64_mac(BMAC_XIF_CONFIG);
5605 }
5606
5607 static void niu_led_state_restore(struct niu *np, u64 val)
5608 {
5609         if (np->flags & NIU_FLAGS_XMAC)
5610                 nw64_mac(XMAC_CONFIG, val);
5611         else
5612                 nw64_mac(BMAC_XIF_CONFIG, val);
5613 }
5614
5615 static void niu_force_led(struct niu *np, int on)
5616 {
5617         u64 val, reg, bit;
5618
5619         if (np->flags & NIU_FLAGS_XMAC) {
5620                 reg = XMAC_CONFIG;
5621                 bit = XMAC_CONFIG_FORCE_LED_ON;
5622         } else {
5623                 reg = BMAC_XIF_CONFIG;
5624                 bit = BMAC_XIF_CONFIG_LINK_LED;
5625         }
5626
5627         val = nr64_mac(reg);
5628         if (on)
5629                 val |= bit;
5630         else
5631                 val &= ~bit;
5632         nw64_mac(reg, val);
5633 }
5634
5635 static int niu_phys_id(struct net_device *dev, u32 data)
5636 {
5637         struct niu *np = netdev_priv(dev);
5638         u64 orig_led_state;
5639         int i;
5640
5641         if (!netif_running(dev))
5642                 return -EAGAIN;
5643
5644         if (data == 0)
5645                 data = 2;
5646
5647         orig_led_state = niu_led_state_save(np);
5648         for (i = 0; i < (data * 2); i++) {
5649                 int on = ((i % 2) == 0);
5650
5651                 niu_force_led(np, on);
5652
5653                 if (msleep_interruptible(500))
5654                         break;
5655         }
5656         niu_led_state_restore(np, orig_led_state);
5657
5658         return 0;
5659 }
5660
5661 static const struct ethtool_ops niu_ethtool_ops = {
5662         .get_drvinfo            = niu_get_drvinfo,
5663         .get_link               = ethtool_op_get_link,
5664         .get_msglevel           = niu_get_msglevel,
5665         .set_msglevel           = niu_set_msglevel,
5666         .get_eeprom_len         = niu_get_eeprom_len,
5667         .get_eeprom             = niu_get_eeprom,
5668         .get_settings           = niu_get_settings,
5669         .set_settings           = niu_set_settings,
5670         .get_strings            = niu_get_strings,
5671         .get_stats_count        = niu_get_stats_count,
5672         .get_ethtool_stats      = niu_get_ethtool_stats,
5673         .phys_id                = niu_phys_id,
5674 };
5675
5676 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
5677                               int ldg, int ldn)
5678 {
5679         if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
5680                 return -EINVAL;
5681         if (ldn < 0 || ldn > LDN_MAX)
5682                 return -EINVAL;
5683
5684         parent->ldg_map[ldn] = ldg;
5685
5686         if (np->parent->plat_type == PLAT_TYPE_NIU) {
5687                 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
5688                  * the firmware, and we're not supposed to change them.
5689                  * Validate the mapping, because if it's wrong we probably
5690                  * won't get any interrupts and that's painful to debug.
5691                  */
5692                 if (nr64(LDG_NUM(ldn)) != ldg) {
5693                         dev_err(np->device, PFX "Port %u, mis-matched "
5694                                 "LDG assignment "
5695                                 "for ldn %d, should be %d is %llu\n",
5696                                 np->port, ldn, ldg,
5697                                 (unsigned long long) nr64(LDG_NUM(ldn)));
5698                         return -EINVAL;
5699                 }
5700         } else
5701                 nw64(LDG_NUM(ldn), ldg);
5702
5703         return 0;
5704 }
5705
5706 static int niu_set_ldg_timer_res(struct niu *np, int res)
5707 {
5708         if (res < 0 || res > LDG_TIMER_RES_VAL)
5709                 return -EINVAL;
5710
5711
5712         nw64(LDG_TIMER_RES, res);
5713
5714         return 0;
5715 }
5716
5717 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
5718 {
5719         if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
5720             (func < 0 || func > 3) ||
5721             (vector < 0 || vector > 0x1f))
5722                 return -EINVAL;
5723
5724         nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
5725
5726         return 0;
5727 }
5728
5729 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
5730 {
5731         u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
5732                                  (addr << ESPC_PIO_STAT_ADDR_SHIFT));
5733         int limit;
5734
5735         if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
5736                 return -EINVAL;
5737
5738         frame = frame_base;
5739         nw64(ESPC_PIO_STAT, frame);
5740         limit = 64;
5741         do {
5742                 udelay(5);
5743                 frame = nr64(ESPC_PIO_STAT);
5744                 if (frame & ESPC_PIO_STAT_READ_END)
5745                         break;
5746         } while (limit--);
5747         if (!(frame & ESPC_PIO_STAT_READ_END)) {
5748                 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5749                         (unsigned long long) frame);
5750                 return -ENODEV;
5751         }
5752
5753         frame = frame_base;
5754         nw64(ESPC_PIO_STAT, frame);
5755         limit = 64;
5756         do {
5757                 udelay(5);
5758                 frame = nr64(ESPC_PIO_STAT);
5759                 if (frame & ESPC_PIO_STAT_READ_END)
5760                         break;
5761         } while (limit--);
5762         if (!(frame & ESPC_PIO_STAT_READ_END)) {
5763                 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5764                         (unsigned long long) frame);
5765                 return -ENODEV;
5766         }
5767
5768         frame = nr64(ESPC_PIO_STAT);
5769         return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
5770 }
5771
5772 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
5773 {
5774         int err = niu_pci_eeprom_read(np, off);
5775         u16 val;
5776
5777         if (err < 0)
5778                 return err;
5779         val = (err << 8);
5780         err = niu_pci_eeprom_read(np, off + 1);
5781         if (err < 0)
5782                 return err;
5783         val |= (err & 0xff);
5784
5785         return val;
5786 }
5787
5788 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
5789 {
5790         int err = niu_pci_eeprom_read(np, off);
5791         u16 val;
5792
5793         if (err < 0)
5794                 return err;
5795
5796         val = (err & 0xff);
5797         err = niu_pci_eeprom_read(np, off + 1);
5798         if (err < 0)
5799                 return err;
5800
5801         val |= (err & 0xff) << 8;
5802
5803         return val;
5804 }
5805
5806 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
5807                                               u32 off,
5808                                               char *namebuf,
5809                                               int namebuf_len)
5810 {
5811         int i;
5812
5813         for (i = 0; i < namebuf_len; i++) {
5814                 int err = niu_pci_eeprom_read(np, off + i);
5815                 if (err < 0)
5816                         return err;
5817                 *namebuf++ = err;
5818                 if (!err)
5819                         break;
5820         }
5821         if (i >= namebuf_len)
5822                 return -EINVAL;
5823
5824         return i + 1;
5825 }
5826
5827 static void __devinit niu_vpd_parse_version(struct niu *np)
5828 {
5829         struct niu_vpd *vpd = &np->vpd;
5830         int len = strlen(vpd->version) + 1;
5831         const char *s = vpd->version;
5832         int i;
5833
5834         for (i = 0; i < len - 5; i++) {
5835                 if (!strncmp(s + i, "FCode ", 5))
5836                         break;
5837         }
5838         if (i >= len - 5)
5839                 return;
5840
5841         s += i + 5;
5842         sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
5843
5844         niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
5845                vpd->fcode_major, vpd->fcode_minor);
5846         if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
5847             (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
5848              vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
5849                 np->flags |= NIU_FLAGS_VPD_VALID;
5850 }
5851
5852 /* ESPC_PIO_EN_ENABLE must be set */
5853 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
5854                                             u32 start, u32 end)
5855 {
5856         unsigned int found_mask = 0;
5857 #define FOUND_MASK_MODEL        0x00000001
5858 #define FOUND_MASK_BMODEL       0x00000002
5859 #define FOUND_MASK_VERS         0x00000004
5860 #define FOUND_MASK_MAC          0x00000008
5861 #define FOUND_MASK_NMAC         0x00000010
5862 #define FOUND_MASK_PHY          0x00000020
5863 #define FOUND_MASK_ALL          0x0000003f
5864
5865         niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
5866                start, end);
5867         while (start < end) {
5868                 int len, err, instance, type, prop_len;
5869                 char namebuf[64];
5870                 u8 *prop_buf;
5871                 int max_len;
5872
5873                 if (found_mask == FOUND_MASK_ALL) {
5874                         niu_vpd_parse_version(np);
5875                         return 1;
5876                 }
5877
5878                 err = niu_pci_eeprom_read(np, start + 2);
5879                 if (err < 0)
5880                         return err;
5881                 len = err;
5882                 start += 3;
5883
5884                 instance = niu_pci_eeprom_read(np, start);
5885                 type = niu_pci_eeprom_read(np, start + 3);
5886                 prop_len = niu_pci_eeprom_read(np, start + 4);
5887                 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
5888                 if (err < 0)
5889                         return err;
5890
5891                 prop_buf = NULL;
5892                 max_len = 0;
5893                 if (!strcmp(namebuf, "model")) {
5894                         prop_buf = np->vpd.model;
5895                         max_len = NIU_VPD_MODEL_MAX;
5896                         found_mask |= FOUND_MASK_MODEL;
5897                 } else if (!strcmp(namebuf, "board-model")) {
5898                         prop_buf = np->vpd.board_model;
5899                         max_len = NIU_VPD_BD_MODEL_MAX;
5900                         found_mask |= FOUND_MASK_BMODEL;
5901                 } else if (!strcmp(namebuf, "version")) {
5902                         prop_buf = np->vpd.version;
5903                         max_len = NIU_VPD_VERSION_MAX;
5904                         found_mask |= FOUND_MASK_VERS;
5905                 } else if (!strcmp(namebuf, "local-mac-address")) {
5906                         prop_buf = np->vpd.local_mac;
5907                         max_len = ETH_ALEN;
5908                         found_mask |= FOUND_MASK_MAC;
5909                 } else if (!strcmp(namebuf, "num-mac-addresses")) {
5910                         prop_buf = &np->vpd.mac_num;
5911                         max_len = 1;
5912                         found_mask |= FOUND_MASK_NMAC;
5913                 } else if (!strcmp(namebuf, "phy-type")) {
5914                         prop_buf = np->vpd.phy_type;
5915                         max_len = NIU_VPD_PHY_TYPE_MAX;
5916                         found_mask |= FOUND_MASK_PHY;
5917                 }
5918
5919                 if (max_len && prop_len > max_len) {
5920                         dev_err(np->device, PFX "Property '%s' length (%d) is "
5921                                 "too long.\n", namebuf, prop_len);
5922                         return -EINVAL;
5923                 }
5924
5925                 if (prop_buf) {
5926                         u32 off = start + 5 + err;
5927                         int i;
5928
5929                         niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
5930                                "len[%d]\n", namebuf, prop_len);
5931                         for (i = 0; i < prop_len; i++)
5932                                 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
5933                 }
5934
5935                 start += len;
5936         }
5937
5938         return 0;
5939 }
5940
5941 /* ESPC_PIO_EN_ENABLE must be set */
5942 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
5943 {
5944         u32 offset;
5945         int err;
5946
5947         err = niu_pci_eeprom_read16_swp(np, start + 1);
5948         if (err < 0)
5949                 return;
5950
5951         offset = err + 3;
5952
5953         while (start + offset < ESPC_EEPROM_SIZE) {
5954                 u32 here = start + offset;
5955                 u32 end;
5956
5957                 err = niu_pci_eeprom_read(np, here);
5958                 if (err != 0x90)
5959                         return;
5960
5961                 err = niu_pci_eeprom_read16_swp(np, here + 1);
5962                 if (err < 0)
5963                         return;
5964
5965                 here = start + offset + 3;
5966                 end = start + offset + err;
5967
5968                 offset += err;
5969
5970                 err = niu_pci_vpd_scan_props(np, here, end);
5971                 if (err < 0 || err == 1)
5972                         return;
5973         }
5974 }
5975
5976 /* ESPC_PIO_EN_ENABLE must be set */
5977 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
5978 {
5979         u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
5980         int err;
5981
5982         while (start < end) {
5983                 ret = start;
5984
5985                 /* ROM header signature?  */
5986                 err = niu_pci_eeprom_read16(np, start +  0);
5987                 if (err != 0x55aa)
5988                         return 0;
5989
5990                 /* Apply offset to PCI data structure.  */
5991                 err = niu_pci_eeprom_read16(np, start + 23);
5992                 if (err < 0)
5993                         return 0;
5994                 start += err;
5995
5996                 /* Check for "PCIR" signature.  */
5997                 err = niu_pci_eeprom_read16(np, start +  0);
5998                 if (err != 0x5043)
5999                         return 0;
6000                 err = niu_pci_eeprom_read16(np, start +  2);
6001                 if (err != 0x4952)
6002                         return 0;
6003
6004                 /* Check for OBP image type.  */
6005                 err = niu_pci_eeprom_read(np, start + 20);
6006                 if (err < 0)
6007                         return 0;
6008                 if (err != 0x01) {
6009                         err = niu_pci_eeprom_read(np, ret + 2);
6010                         if (err < 0)
6011                                 return 0;
6012
6013                         start = ret + (err * 512);
6014                         continue;
6015                 }
6016
6017                 err = niu_pci_eeprom_read16_swp(np, start + 8);
6018                 if (err < 0)
6019                         return err;
6020                 ret += err;
6021
6022                 err = niu_pci_eeprom_read(np, ret + 0);
6023                 if (err != 0x82)
6024                         return 0;
6025
6026                 return ret;
6027         }
6028
6029         return 0;
6030 }
6031
6032 static int __devinit niu_phy_type_prop_decode(struct niu *np,
6033                                               const char *phy_prop)
6034 {
6035         if (!strcmp(phy_prop, "mif")) {
6036                 /* 1G copper, MII */
6037                 np->flags &= ~(NIU_FLAGS_FIBER |
6038                                NIU_FLAGS_10G);
6039                 np->mac_xcvr = MAC_XCVR_MII;
6040         } else if (!strcmp(phy_prop, "xgf")) {
6041                 /* 10G fiber, XPCS */
6042                 np->flags |= (NIU_FLAGS_10G |
6043                               NIU_FLAGS_FIBER);
6044                 np->mac_xcvr = MAC_XCVR_XPCS;
6045         } else if (!strcmp(phy_prop, "pcs")) {
6046                 /* 1G fiber, PCS */
6047                 np->flags &= ~NIU_FLAGS_10G;
6048                 np->flags |= NIU_FLAGS_FIBER;
6049                 np->mac_xcvr = MAC_XCVR_PCS;
6050         } else if (!strcmp(phy_prop, "xgc")) {
6051                 /* 10G copper, XPCS */
6052                 np->flags |= NIU_FLAGS_10G;
6053                 np->flags &= ~NIU_FLAGS_FIBER;
6054                 np->mac_xcvr = MAC_XCVR_XPCS;
6055         } else {
6056                 return -EINVAL;
6057         }
6058         return 0;
6059 }
6060
6061 static void __devinit niu_pci_vpd_validate(struct niu *np)
6062 {
6063         struct net_device *dev = np->dev;
6064         struct niu_vpd *vpd = &np->vpd;
6065         u8 val8;
6066
6067         if (!is_valid_ether_addr(&vpd->local_mac[0])) {
6068                 dev_err(np->device, PFX "VPD MAC invalid, "
6069                         "falling back to SPROM.\n");
6070
6071                 np->flags &= ~NIU_FLAGS_VPD_VALID;
6072                 return;
6073         }
6074
6075         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6076                 dev_err(np->device, PFX "Illegal phy string [%s].\n",
6077                         np->vpd.phy_type);
6078                 dev_err(np->device, PFX "Falling back to SPROM.\n");
6079                 np->flags &= ~NIU_FLAGS_VPD_VALID;
6080                 return;
6081         }
6082
6083         memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
6084
6085         val8 = dev->perm_addr[5];
6086         dev->perm_addr[5] += np->port;
6087         if (dev->perm_addr[5] < val8)
6088                 dev->perm_addr[4]++;
6089
6090         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6091 }
6092
6093 static int __devinit niu_pci_probe_sprom(struct niu *np)
6094 {
6095         struct net_device *dev = np->dev;
6096         int len, i;
6097         u64 val, sum;
6098         u8 val8;
6099
6100         val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
6101         val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
6102         len = val / 4;
6103
6104         np->eeprom_len = len;
6105
6106         niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
6107
6108         sum = 0;
6109         for (i = 0; i < len; i++) {
6110                 val = nr64(ESPC_NCR(i));
6111                 sum += (val >>  0) & 0xff;
6112                 sum += (val >>  8) & 0xff;
6113                 sum += (val >> 16) & 0xff;
6114                 sum += (val >> 24) & 0xff;
6115         }
6116         niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
6117         if ((sum & 0xff) != 0xab) {
6118                 dev_err(np->device, PFX "Bad SPROM checksum "
6119                         "(%x, should be 0xab)\n", (int) (sum & 0xff));
6120                 return -EINVAL;
6121         }
6122
6123         val = nr64(ESPC_PHY_TYPE);
6124         switch (np->port) {
6125         case 0:
6126                 val = (val & ESPC_PHY_TYPE_PORT0) >>
6127                         ESPC_PHY_TYPE_PORT0_SHIFT;
6128                 break;
6129         case 1:
6130                 val = (val & ESPC_PHY_TYPE_PORT1) >>
6131                         ESPC_PHY_TYPE_PORT1_SHIFT;
6132                 break;
6133         case 2:
6134                 val = (val & ESPC_PHY_TYPE_PORT2) >>
6135                         ESPC_PHY_TYPE_PORT2_SHIFT;
6136                 break;
6137         case 3:
6138                 val = (val & ESPC_PHY_TYPE_PORT3) >>
6139                         ESPC_PHY_TYPE_PORT3_SHIFT;
6140                 break;
6141         default:
6142                 dev_err(np->device, PFX "Bogus port number %u\n",
6143                         np->port);
6144                 return -EINVAL;
6145         }
6146         niudbg(PROBE, "SPROM: PHY type %llx\n", (unsigned long long) val);
6147
6148         switch (val) {
6149         case ESPC_PHY_TYPE_1G_COPPER:
6150                 /* 1G copper, MII */
6151                 np->flags &= ~(NIU_FLAGS_FIBER |
6152                                NIU_FLAGS_10G);
6153                 np->mac_xcvr = MAC_XCVR_MII;
6154                 break;
6155
6156         case ESPC_PHY_TYPE_1G_FIBER:
6157                 /* 1G fiber, PCS */
6158                 np->flags &= ~NIU_FLAGS_10G;
6159                 np->flags |= NIU_FLAGS_FIBER;
6160                 np->mac_xcvr = MAC_XCVR_PCS;
6161                 break;
6162
6163         case ESPC_PHY_TYPE_10G_COPPER:
6164                 /* 10G copper, XPCS */
6165                 np->flags |= NIU_FLAGS_10G;
6166                 np->flags &= ~NIU_FLAGS_FIBER;
6167                 np->mac_xcvr = MAC_XCVR_XPCS;
6168                 break;
6169
6170         case ESPC_PHY_TYPE_10G_FIBER:
6171                 /* 10G fiber, XPCS */
6172                 np->flags |= (NIU_FLAGS_10G |
6173                               NIU_FLAGS_FIBER);
6174                 np->mac_xcvr = MAC_XCVR_XPCS;
6175                 break;
6176
6177         default:
6178                 dev_err(np->device, PFX "Bogus SPROM phy type %llu\n",
6179                         (unsigned long long) val);
6180                 return -EINVAL;
6181         }
6182
6183         val = nr64(ESPC_MAC_ADDR0);
6184         niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
6185                (unsigned long long) val);
6186         dev->perm_addr[0] = (val >>  0) & 0xff;
6187         dev->perm_addr[1] = (val >>  8) & 0xff;
6188         dev->perm_addr[2] = (val >> 16) & 0xff;
6189         dev->perm_addr[3] = (val >> 24) & 0xff;
6190
6191         val = nr64(ESPC_MAC_ADDR1);
6192         niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
6193                (unsigned long long) val);
6194         dev->perm_addr[4] = (val >>  0) & 0xff;
6195         dev->perm_addr[5] = (val >>  8) & 0xff;
6196
6197         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6198                 dev_err(np->device, PFX "SPROM MAC address invalid\n");
6199                 dev_err(np->device, PFX "[ \n");
6200                 for (i = 0; i < 6; i++)
6201                         printk("%02x ", dev->perm_addr[i]);
6202                 printk("]\n");
6203                 return -EINVAL;
6204         }
6205
6206         val8 = dev->perm_addr[5];
6207         dev->perm_addr[5] += np->port;
6208         if (dev->perm_addr[5] < val8)
6209                 dev->perm_addr[4]++;
6210
6211         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6212
6213         val = nr64(ESPC_MOD_STR_LEN);
6214         niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
6215                (unsigned long long) val);
6216         if (val > 8 * 4)
6217                 return -EINVAL;
6218
6219         for (i = 0; i < val; i += 4) {
6220                 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
6221
6222                 np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
6223                 np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
6224                 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
6225                 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
6226         }
6227         np->vpd.model[val] = '\0';
6228
6229         val = nr64(ESPC_BD_MOD_STR_LEN);
6230         niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
6231                (unsigned long long) val);
6232         if (val > 4 * 4)
6233                 return -EINVAL;
6234
6235         for (i = 0; i < val; i += 4) {
6236                 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
6237
6238                 np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
6239                 np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
6240                 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
6241                 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
6242         }
6243         np->vpd.board_model[val] = '\0';
6244
6245         np->vpd.mac_num =
6246                 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
6247         niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
6248                np->vpd.mac_num);
6249
6250         return 0;
6251 }
6252
6253 static int __devinit niu_get_and_validate_port(struct niu *np)
6254 {
6255         struct niu_parent *parent = np->parent;
6256
6257         if (np->port <= 1)
6258                 np->flags |= NIU_FLAGS_XMAC;
6259
6260         if (!parent->num_ports) {
6261                 if (parent->plat_type == PLAT_TYPE_NIU) {
6262                         parent->num_ports = 2;
6263                 } else {
6264                         parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
6265                                 ESPC_NUM_PORTS_MACS_VAL;
6266
6267                         if (!parent->num_ports)
6268                                 parent->num_ports = 4;
6269                 }
6270         }
6271
6272         niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
6273                np->port, parent->num_ports);
6274         if (np->port >= parent->num_ports)
6275                 return -ENODEV;
6276
6277         return 0;
6278 }
6279
6280 static int __devinit phy_record(struct niu_parent *parent,
6281                                 struct phy_probe_info *p,
6282                                 int dev_id_1, int dev_id_2, u8 phy_port,
6283                                 int type)
6284 {
6285         u32 id = (dev_id_1 << 16) | dev_id_2;
6286         u8 idx;
6287
6288         if (dev_id_1 < 0 || dev_id_2 < 0)
6289                 return 0;
6290         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
6291                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704)
6292                         return 0;
6293         } else {
6294                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
6295                         return 0;
6296         }
6297
6298         pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
6299                 parent->index, id,
6300                 (type == PHY_TYPE_PMA_PMD ?
6301                  "PMA/PMD" :
6302                  (type == PHY_TYPE_PCS ?
6303                   "PCS" : "MII")),
6304                 phy_port);
6305
6306         if (p->cur[type] >= NIU_MAX_PORTS) {
6307                 printk(KERN_ERR PFX "Too many PHY ports.\n");
6308                 return -EINVAL;
6309         }
6310         idx = p->cur[type];
6311         p->phy_id[type][idx] = id;
6312         p->phy_port[type][idx] = phy_port;
6313         p->cur[type] = idx + 1;
6314         return 0;
6315 }
6316
6317 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
6318 {
6319         int i;
6320
6321         for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
6322                 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
6323                         return 1;
6324         }
6325         for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
6326                 if (p->phy_port[PHY_TYPE_PCS][i] == port)
6327                         return 1;
6328         }
6329
6330         return 0;
6331 }
6332
6333 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
6334 {
6335         int port, cnt;
6336
6337         cnt = 0;
6338         *lowest = 32;
6339         for (port = 8; port < 32; port++) {
6340                 if (port_has_10g(p, port)) {
6341                         if (!cnt)
6342                                 *lowest = port;
6343                         cnt++;
6344                 }
6345         }
6346
6347         return cnt;
6348 }
6349
6350 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
6351 {
6352         *lowest = 32;
6353         if (p->cur[PHY_TYPE_MII])
6354                 *lowest = p->phy_port[PHY_TYPE_MII][0];
6355
6356         return p->cur[PHY_TYPE_MII];
6357 }
6358
6359 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
6360 {
6361         int num_ports = parent->num_ports;
6362         int i;
6363
6364         for (i = 0; i < num_ports; i++) {
6365                 parent->rxchan_per_port[i] = (16 / num_ports);
6366                 parent->txchan_per_port[i] = (16 / num_ports);
6367
6368                 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6369                         "[%u TX chans]\n",
6370                         parent->index, i,
6371                         parent->rxchan_per_port[i],
6372                         parent->txchan_per_port[i]);
6373         }
6374 }
6375
6376 static void __devinit niu_divide_channels(struct niu_parent *parent,
6377                                           int num_10g, int num_1g)
6378 {
6379         int num_ports = parent->num_ports;
6380         int rx_chans_per_10g, rx_chans_per_1g;
6381         int tx_chans_per_10g, tx_chans_per_1g;
6382         int i, tot_rx, tot_tx;
6383
6384         if (!num_10g || !num_1g) {
6385                 rx_chans_per_10g = rx_chans_per_1g =
6386                         (NIU_NUM_RXCHAN / num_ports);
6387                 tx_chans_per_10g = tx_chans_per_1g =
6388                         (NIU_NUM_TXCHAN / num_ports);
6389         } else {
6390                 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
6391                 rx_chans_per_10g = (NIU_NUM_RXCHAN -
6392                                     (rx_chans_per_1g * num_1g)) /
6393                         num_10g;
6394
6395                 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
6396                 tx_chans_per_10g = (NIU_NUM_TXCHAN -
6397                                     (tx_chans_per_1g * num_1g)) /
6398                         num_10g;
6399         }
6400
6401         tot_rx = tot_tx = 0;
6402         for (i = 0; i < num_ports; i++) {
6403                 int type = phy_decode(parent->port_phy, i);
6404
6405                 if (type == PORT_TYPE_10G) {
6406                         parent->rxchan_per_port[i] = rx_chans_per_10g;
6407                         parent->txchan_per_port[i] = tx_chans_per_10g;
6408                 } else {
6409                         parent->rxchan_per_port[i] = rx_chans_per_1g;
6410                         parent->txchan_per_port[i] = tx_chans_per_1g;
6411                 }
6412                 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6413                         "[%u TX chans]\n",
6414                         parent->index, i,
6415                         parent->rxchan_per_port[i],
6416                         parent->txchan_per_port[i]);
6417                 tot_rx += parent->rxchan_per_port[i];
6418                 tot_tx += parent->txchan_per_port[i];
6419         }
6420
6421         if (tot_rx > NIU_NUM_RXCHAN) {
6422                 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
6423                        "resetting to one per port.\n",
6424                        parent->index, tot_rx);
6425                 for (i = 0; i < num_ports; i++)
6426                         parent->rxchan_per_port[i] = 1;
6427         }
6428         if (tot_tx > NIU_NUM_TXCHAN) {
6429                 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
6430                        "resetting to one per port.\n",
6431                        parent->index, tot_tx);
6432                 for (i = 0; i < num_ports; i++)
6433                         parent->txchan_per_port[i] = 1;
6434         }
6435         if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
6436                 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
6437                        "RX[%d] TX[%d]\n",
6438                        parent->index, tot_rx, tot_tx);
6439         }
6440 }
6441
6442 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
6443                                             int num_10g, int num_1g)
6444 {
6445         int i, num_ports = parent->num_ports;
6446         int rdc_group, rdc_groups_per_port;
6447         int rdc_channel_base;
6448
6449         rdc_group = 0;
6450         rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
6451
6452         rdc_channel_base = 0;
6453
6454         for (i = 0; i < num_ports; i++) {
6455                 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
6456                 int grp, num_channels = parent->rxchan_per_port[i];
6457                 int this_channel_offset;
6458
6459                 tp->first_table_num = rdc_group;
6460                 tp->num_tables = rdc_groups_per_port;
6461                 this_channel_offset = 0;
6462                 for (grp = 0; grp < tp->num_tables; grp++) {
6463                         struct rdc_table *rt = &tp->tables[grp];
6464                         int slot;
6465
6466                         pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
6467                                 parent->index, i, tp->first_table_num + grp);
6468                         for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
6469                                 rt->rxdma_channel[slot] =
6470                                         rdc_channel_base + this_channel_offset;
6471
6472                                 printk("%d ", rt->rxdma_channel[slot]);
6473
6474                                 if (++this_channel_offset == num_channels)
6475                                         this_channel_offset = 0;
6476                         }
6477                         printk("]\n");
6478                 }
6479
6480                 parent->rdc_default[i] = rdc_channel_base;
6481
6482                 rdc_channel_base += num_channels;
6483                 rdc_group += rdc_groups_per_port;
6484         }
6485 }
6486
6487 static int __devinit fill_phy_probe_info(struct niu *np,
6488                                          struct niu_parent *parent,
6489                                          struct phy_probe_info *info)
6490 {
6491         unsigned long flags;
6492         int port, err;
6493
6494         memset(info, 0, sizeof(*info));
6495
6496         /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
6497         niu_lock_parent(np, flags);
6498         err = 0;
6499         for (port = 8; port < 32; port++) {
6500                 int dev_id_1, dev_id_2;
6501
6502                 dev_id_1 = mdio_read(np, port,
6503                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
6504                 dev_id_2 = mdio_read(np, port,
6505                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
6506                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6507                                  PHY_TYPE_PMA_PMD);
6508                 if (err)
6509                         break;
6510                 dev_id_1 = mdio_read(np, port,
6511                                      NIU_PCS_DEV_ADDR, MII_PHYSID1);
6512                 dev_id_2 = mdio_read(np, port,
6513                                      NIU_PCS_DEV_ADDR, MII_PHYSID2);
6514                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6515                                  PHY_TYPE_PCS);
6516                 if (err)
6517                         break;
6518                 dev_id_1 = mii_read(np, port, MII_PHYSID1);
6519                 dev_id_2 = mii_read(np, port, MII_PHYSID2);
6520                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6521                                  PHY_TYPE_MII);
6522                 if (err)
6523                         break;
6524         }
6525         niu_unlock_parent(np, flags);
6526
6527         return err;
6528 }
6529
6530 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
6531 {
6532         struct phy_probe_info *info = &parent->phy_probe_info;
6533         int lowest_10g, lowest_1g;
6534         int num_10g, num_1g;
6535         u32 val;
6536         int err;
6537
6538         err = fill_phy_probe_info(np, parent, info);
6539         if (err)
6540                 return err;
6541
6542         num_10g = count_10g_ports(info, &lowest_10g);
6543         num_1g = count_1g_ports(info, &lowest_1g);
6544
6545         switch ((num_10g << 4) | num_1g) {
6546         case 0x24:
6547                 if (lowest_1g == 10)
6548                         parent->plat_type = PLAT_TYPE_VF_P0;
6549                 else if (lowest_1g == 26)
6550                         parent->plat_type = PLAT_TYPE_VF_P1;
6551                 else
6552                         goto unknown_vg_1g_port;
6553
6554                 /* fallthru */
6555         case 0x22:
6556                 val = (phy_encode(PORT_TYPE_10G, 0) |
6557                        phy_encode(PORT_TYPE_10G, 1) |
6558                        phy_encode(PORT_TYPE_1G, 2) |
6559                        phy_encode(PORT_TYPE_1G, 3));
6560                 break;
6561
6562         case 0x20:
6563                 val = (phy_encode(PORT_TYPE_10G, 0) |
6564                        phy_encode(PORT_TYPE_10G, 1));
6565                 break;
6566
6567         case 0x10:
6568                 val = phy_encode(PORT_TYPE_10G, np->port);
6569                 break;
6570
6571         case 0x14:
6572                 if (lowest_1g == 10)
6573                         parent->plat_type = PLAT_TYPE_VF_P0;
6574                 else if (lowest_1g == 26)
6575                         parent->plat_type = PLAT_TYPE_VF_P1;
6576                 else
6577                         goto unknown_vg_1g_port;
6578
6579                 /* fallthru */
6580         case 0x13:
6581                 if ((lowest_10g & 0x7) == 0)
6582                         val = (phy_encode(PORT_TYPE_10G, 0) |
6583                                phy_encode(PORT_TYPE_1G, 1) |
6584                                phy_encode(PORT_TYPE_1G, 2) |
6585                                phy_encode(PORT_TYPE_1G, 3));
6586                 else
6587                         val = (phy_encode(PORT_TYPE_1G, 0) |
6588                                phy_encode(PORT_TYPE_10G, 1) |
6589                                phy_encode(PORT_TYPE_1G, 2) |
6590                                phy_encode(PORT_TYPE_1G, 3));
6591                 break;
6592
6593         case 0x04:
6594                 if (lowest_1g == 10)
6595                         parent->plat_type = PLAT_TYPE_VF_P0;
6596                 else if (lowest_1g == 26)
6597                         parent->plat_type = PLAT_TYPE_VF_P1;
6598                 else
6599                         goto unknown_vg_1g_port;
6600
6601                 val = (phy_encode(PORT_TYPE_1G, 0) |
6602                        phy_encode(PORT_TYPE_1G, 1) |
6603                        phy_encode(PORT_TYPE_1G, 2) |
6604                        phy_encode(PORT_TYPE_1G, 3));
6605                 break;
6606
6607         default:
6608                 printk(KERN_ERR PFX "Unsupported port config "
6609                        "10G[%d] 1G[%d]\n",
6610                        num_10g, num_1g);
6611                 return -EINVAL;
6612         }
6613
6614         parent->port_phy = val;
6615
6616         if (parent->plat_type == PLAT_TYPE_NIU)
6617                 niu_n2_divide_channels(parent);
6618         else
6619                 niu_divide_channels(parent, num_10g, num_1g);
6620
6621         niu_divide_rdc_groups(parent, num_10g, num_1g);
6622
6623         return 0;
6624
6625 unknown_vg_1g_port:
6626         printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
6627                lowest_1g);
6628         return -EINVAL;
6629 }
6630
6631 static int __devinit niu_probe_ports(struct niu *np)
6632 {
6633         struct niu_parent *parent = np->parent;
6634         int err, i;
6635
6636         niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
6637                parent->port_phy);
6638
6639         if (parent->port_phy == PORT_PHY_UNKNOWN) {
6640                 err = walk_phys(np, parent);
6641                 if (err)
6642                         return err;
6643
6644                 niu_set_ldg_timer_res(np, 2);
6645                 for (i = 0; i <= LDN_MAX; i++)
6646                         niu_ldn_irq_enable(np, i, 0);
6647         }
6648
6649         if (parent->port_phy == PORT_PHY_INVALID)
6650                 return -EINVAL;
6651
6652         return 0;
6653 }
6654
6655 static int __devinit niu_classifier_swstate_init(struct niu *np)
6656 {
6657         struct niu_classifier *cp = &np->clas;
6658
6659         niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
6660                np->parent->tcam_num_entries);
6661
6662         cp->tcam_index = (u16) np->port;
6663         cp->h1_init = 0xffffffff;
6664         cp->h2_init = 0xffff;
6665
6666         return fflp_early_init(np);
6667 }
6668
6669 static void __devinit niu_link_config_init(struct niu *np)
6670 {
6671         struct niu_link_config *lp = &np->link_config;
6672
6673         lp->advertising = (ADVERTISED_10baseT_Half |
6674                            ADVERTISED_10baseT_Full |
6675                            ADVERTISED_100baseT_Half |
6676                            ADVERTISED_100baseT_Full |
6677                            ADVERTISED_1000baseT_Half |
6678                            ADVERTISED_1000baseT_Full |
6679                            ADVERTISED_10000baseT_Full |
6680                            ADVERTISED_Autoneg);
6681         lp->speed = lp->active_speed = SPEED_INVALID;
6682         lp->duplex = lp->active_duplex = DUPLEX_INVALID;
6683 #if 0
6684         lp->loopback_mode = LOOPBACK_MAC;
6685         lp->active_speed = SPEED_10000;
6686         lp->active_duplex = DUPLEX_FULL;
6687 #else
6688         lp->loopback_mode = LOOPBACK_DISABLED;
6689 #endif
6690 }
6691
6692 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
6693 {
6694         switch (np->port) {
6695         case 0:
6696                 np->mac_regs = np->regs + XMAC_PORT0_OFF;
6697                 np->ipp_off  = 0x00000;
6698                 np->pcs_off  = 0x04000;
6699                 np->xpcs_off = 0x02000;
6700                 break;
6701
6702         case 1:
6703                 np->mac_regs = np->regs + XMAC_PORT1_OFF;
6704                 np->ipp_off  = 0x08000;
6705                 np->pcs_off  = 0x0a000;
6706                 np->xpcs_off = 0x08000;
6707                 break;
6708
6709         case 2:
6710                 np->mac_regs = np->regs + BMAC_PORT2_OFF;
6711                 np->ipp_off  = 0x04000;
6712                 np->pcs_off  = 0x0e000;
6713                 np->xpcs_off = ~0UL;
6714                 break;
6715
6716         case 3:
6717                 np->mac_regs = np->regs + BMAC_PORT3_OFF;
6718                 np->ipp_off  = 0x0c000;
6719                 np->pcs_off  = 0x12000;
6720                 np->xpcs_off = ~0UL;
6721                 break;
6722
6723         default:
6724                 dev_err(np->device, PFX "Port %u is invalid, cannot "
6725                         "compute MAC block offset.\n", np->port);
6726                 return -EINVAL;
6727         }
6728
6729         return 0;
6730 }
6731
6732 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
6733 {
6734         struct msix_entry msi_vec[NIU_NUM_LDG];
6735         struct niu_parent *parent = np->parent;
6736         struct pci_dev *pdev = np->pdev;
6737         int i, num_irqs, err;
6738         u8 first_ldg;
6739
6740         first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
6741         for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
6742                 ldg_num_map[i] = first_ldg + i;
6743
6744         num_irqs = (parent->rxchan_per_port[np->port] +
6745                     parent->txchan_per_port[np->port] +
6746                     (np->port == 0 ? 3 : 1));
6747         BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
6748
6749 retry:
6750         for (i = 0; i < num_irqs; i++) {
6751                 msi_vec[i].vector = 0;
6752                 msi_vec[i].entry = i;
6753         }
6754
6755         err = pci_enable_msix(pdev, msi_vec, num_irqs);
6756         if (err < 0) {
6757                 np->flags &= ~NIU_FLAGS_MSIX;
6758                 return;
6759         }
6760         if (err > 0) {
6761                 num_irqs = err;
6762                 goto retry;
6763         }
6764
6765         np->flags |= NIU_FLAGS_MSIX;
6766         for (i = 0; i < num_irqs; i++)
6767                 np->ldg[i].irq = msi_vec[i].vector;
6768         np->num_ldg = num_irqs;
6769 }
6770
6771 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
6772 {
6773 #ifdef CONFIG_SPARC64
6774         struct of_device *op = np->op;
6775         const u32 *int_prop;
6776         int i;
6777
6778         int_prop = of_get_property(op->node, "interrupts", NULL);
6779         if (!int_prop)
6780                 return -ENODEV;
6781
6782         for (i = 0; i < op->num_irqs; i++) {
6783                 ldg_num_map[i] = int_prop[i];
6784                 np->ldg[i].irq = op->irqs[i];
6785         }
6786
6787         np->num_ldg = op->num_irqs;
6788
6789         return 0;
6790 #else
6791         return -EINVAL;
6792 #endif
6793 }
6794
6795 static int __devinit niu_ldg_init(struct niu *np)
6796 {
6797         struct niu_parent *parent = np->parent;
6798         u8 ldg_num_map[NIU_NUM_LDG];
6799         int first_chan, num_chan;
6800         int i, err, ldg_rotor;
6801         u8 port;
6802
6803         np->num_ldg = 1;
6804         np->ldg[0].irq = np->dev->irq;
6805         if (parent->plat_type == PLAT_TYPE_NIU) {
6806                 err = niu_n2_irq_init(np, ldg_num_map);
6807                 if (err)
6808                         return err;
6809         } else
6810                 niu_try_msix(np, ldg_num_map);
6811
6812         port = np->port;
6813         for (i = 0; i < np->num_ldg; i++) {
6814                 struct niu_ldg *lp = &np->ldg[i];
6815
6816                 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
6817
6818                 lp->np = np;
6819                 lp->ldg_num = ldg_num_map[i];
6820                 lp->timer = 2; /* XXX */
6821
6822                 /* On N2 NIU the firmware has setup the SID mappings so they go
6823                  * to the correct values that will route the LDG to the proper
6824                  * interrupt in the NCU interrupt table.
6825                  */
6826                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
6827                         err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
6828                         if (err)
6829                                 return err;
6830                 }
6831         }
6832
6833         /* We adopt the LDG assignment ordering used by the N2 NIU
6834          * 'interrupt' properties because that simplifies a lot of
6835          * things.  This ordering is:
6836          *
6837          *      MAC
6838          *      MIF     (if port zero)
6839          *      SYSERR  (if port zero)
6840          *      RX channels
6841          *      TX channels
6842          */
6843
6844         ldg_rotor = 0;
6845
6846         err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
6847                                   LDN_MAC(port));
6848         if (err)
6849                 return err;
6850
6851         ldg_rotor++;
6852         if (ldg_rotor == np->num_ldg)
6853                 ldg_rotor = 0;
6854
6855         if (port == 0) {
6856                 err = niu_ldg_assign_ldn(np, parent,
6857                                          ldg_num_map[ldg_rotor],
6858                                          LDN_MIF);
6859                 if (err)
6860                         return err;
6861
6862                 ldg_rotor++;
6863                 if (ldg_rotor == np->num_ldg)
6864                         ldg_rotor = 0;
6865
6866                 err = niu_ldg_assign_ldn(np, parent,
6867                                          ldg_num_map[ldg_rotor],
6868                                          LDN_DEVICE_ERROR);
6869                 if (err)
6870                         return err;
6871
6872                 ldg_rotor++;
6873                 if (ldg_rotor == np->num_ldg)
6874                         ldg_rotor = 0;
6875
6876         }
6877
6878         first_chan = 0;
6879         for (i = 0; i < port; i++)
6880                 first_chan += parent->rxchan_per_port[port];
6881         num_chan = parent->rxchan_per_port[port];
6882
6883         for (i = first_chan; i < (first_chan + num_chan); i++) {
6884                 err = niu_ldg_assign_ldn(np, parent,
6885                                          ldg_num_map[ldg_rotor],
6886                                          LDN_RXDMA(i));
6887                 if (err)
6888                         return err;
6889                 ldg_rotor++;
6890                 if (ldg_rotor == np->num_ldg)
6891                         ldg_rotor = 0;
6892         }
6893
6894         first_chan = 0;
6895         for (i = 0; i < port; i++)
6896                 first_chan += parent->txchan_per_port[port];
6897         num_chan = parent->txchan_per_port[port];
6898         for (i = first_chan; i < (first_chan + num_chan); i++) {
6899                 err = niu_ldg_assign_ldn(np, parent,
6900                                          ldg_num_map[ldg_rotor],
6901                                          LDN_TXDMA(i));
6902                 if (err)
6903                         return err;
6904                 ldg_rotor++;
6905                 if (ldg_rotor == np->num_ldg)
6906                         ldg_rotor = 0;
6907         }
6908
6909         return 0;
6910 }
6911
6912 static void __devexit niu_ldg_free(struct niu *np)
6913 {
6914         if (np->flags & NIU_FLAGS_MSIX)
6915                 pci_disable_msix(np->pdev);
6916 }
6917
6918 static int __devinit niu_get_of_props(struct niu *np)
6919 {
6920 #ifdef CONFIG_SPARC64
6921         struct net_device *dev = np->dev;
6922         struct device_node *dp;
6923         const char *phy_type;
6924         const u8 *mac_addr;
6925         int prop_len;
6926
6927         if (np->parent->plat_type == PLAT_TYPE_NIU)
6928                 dp = np->op->node;
6929         else
6930                 dp = pci_device_to_OF_node(np->pdev);
6931
6932         phy_type = of_get_property(dp, "phy-type", &prop_len);
6933         if (!phy_type) {
6934                 dev_err(np->device, PFX "%s: OF node lacks "
6935                         "phy-type property\n",
6936                         dp->full_name);
6937                 return -EINVAL;
6938         }
6939
6940         if (!strcmp(phy_type, "none"))
6941                 return -ENODEV;
6942
6943         strcpy(np->vpd.phy_type, phy_type);
6944
6945         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6946                 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
6947                         dp->full_name, np->vpd.phy_type);
6948                 return -EINVAL;
6949         }
6950
6951         mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
6952         if (!mac_addr) {
6953                 dev_err(np->device, PFX "%s: OF node lacks "
6954                         "local-mac-address property\n",
6955                         dp->full_name);
6956                 return -EINVAL;
6957         }
6958         if (prop_len != dev->addr_len) {
6959                 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
6960                         "is wrong.\n",
6961                         dp->full_name, prop_len);
6962         }
6963         memcpy(dev->perm_addr, mac_addr, dev->addr_len);
6964         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6965                 int i;
6966
6967                 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
6968                         dp->full_name);
6969                 dev_err(np->device, PFX "%s: [ \n",
6970                         dp->full_name);
6971                 for (i = 0; i < 6; i++)
6972                         printk("%02x ", dev->perm_addr[i]);
6973                 printk("]\n");
6974                 return -EINVAL;
6975         }
6976
6977         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6978
6979         return 0;
6980 #else
6981         return -EINVAL;
6982 #endif
6983 }
6984
6985 static int __devinit niu_get_invariants(struct niu *np)
6986 {
6987         int err, have_props;
6988         u32 offset;
6989
6990         err = niu_get_of_props(np);
6991         if (err == -ENODEV)
6992                 return err;
6993
6994         have_props = !err;
6995
6996         err = niu_get_and_validate_port(np);
6997         if (err)
6998                 return err;
6999
7000         err = niu_init_mac_ipp_pcs_base(np);
7001         if (err)
7002                 return err;
7003
7004         if (!have_props) {
7005                 if (np->parent->plat_type == PLAT_TYPE_NIU)
7006                         return -EINVAL;
7007
7008                 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
7009                 offset = niu_pci_vpd_offset(np);
7010                 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
7011                        offset);
7012                 if (offset)
7013                         niu_pci_vpd_fetch(np, offset);
7014                 nw64(ESPC_PIO_EN, 0);
7015
7016                 if (np->flags & NIU_FLAGS_VPD_VALID)
7017                         niu_pci_vpd_validate(np);
7018
7019                 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
7020                         err = niu_pci_probe_sprom(np);
7021                         if (err)
7022                                 return err;
7023                 }
7024         }
7025
7026         err = niu_probe_ports(np);
7027         if (err)
7028                 return err;
7029
7030         niu_ldg_init(np);
7031
7032         niu_classifier_swstate_init(np);
7033         niu_link_config_init(np);
7034
7035         err = niu_determine_phy_disposition(np);
7036         if (!err)
7037                 err = niu_init_link(np);
7038
7039         return err;
7040 }
7041
7042 static LIST_HEAD(niu_parent_list);
7043 static DEFINE_MUTEX(niu_parent_lock);
7044 static int niu_parent_index;
7045
7046 static ssize_t show_port_phy(struct device *dev,
7047                              struct device_attribute *attr, char *buf)
7048 {
7049         struct platform_device *plat_dev = to_platform_device(dev);
7050         struct niu_parent *p = plat_dev->dev.platform_data;
7051         u32 port_phy = p->port_phy;
7052         char *orig_buf = buf;
7053         int i;
7054
7055         if (port_phy == PORT_PHY_UNKNOWN ||
7056             port_phy == PORT_PHY_INVALID)
7057                 return 0;
7058
7059         for (i = 0; i < p->num_ports; i++) {
7060                 const char *type_str;
7061                 int type;
7062
7063                 type = phy_decode(port_phy, i);
7064                 if (type == PORT_TYPE_10G)
7065                         type_str = "10G";
7066                 else
7067                         type_str = "1G";
7068                 buf += sprintf(buf,
7069                                (i == 0) ? "%s" : " %s",
7070                                type_str);
7071         }
7072         buf += sprintf(buf, "\n");
7073         return buf - orig_buf;
7074 }
7075
7076 static ssize_t show_plat_type(struct device *dev,
7077                               struct device_attribute *attr, char *buf)
7078 {
7079         struct platform_device *plat_dev = to_platform_device(dev);
7080         struct niu_parent *p = plat_dev->dev.platform_data;
7081         const char *type_str;
7082
7083         switch (p->plat_type) {
7084         case PLAT_TYPE_ATLAS:
7085                 type_str = "atlas";
7086                 break;
7087         case PLAT_TYPE_NIU:
7088                 type_str = "niu";
7089                 break;
7090         case PLAT_TYPE_VF_P0:
7091                 type_str = "vf_p0";
7092                 break;
7093         case PLAT_TYPE_VF_P1:
7094                 type_str = "vf_p1";
7095                 break;
7096         default:
7097                 type_str = "unknown";
7098                 break;
7099         }
7100
7101         return sprintf(buf, "%s\n", type_str);
7102 }
7103
7104 static ssize_t __show_chan_per_port(struct device *dev,
7105                                     struct device_attribute *attr, char *buf,
7106                                     int rx)
7107 {
7108         struct platform_device *plat_dev = to_platform_device(dev);
7109         struct niu_parent *p = plat_dev->dev.platform_data;
7110         char *orig_buf = buf;
7111         u8 *arr;
7112         int i;
7113
7114         arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
7115
7116         for (i = 0; i < p->num_ports; i++) {
7117                 buf += sprintf(buf,
7118                                (i == 0) ? "%d" : " %d",
7119                                arr[i]);
7120         }
7121         buf += sprintf(buf, "\n");
7122
7123         return buf - orig_buf;
7124 }
7125
7126 static ssize_t show_rxchan_per_port(struct device *dev,
7127                                     struct device_attribute *attr, char *buf)
7128 {
7129         return __show_chan_per_port(dev, attr, buf, 1);
7130 }
7131
7132 static ssize_t show_txchan_per_port(struct device *dev,
7133                                     struct device_attribute *attr, char *buf)
7134 {
7135         return __show_chan_per_port(dev, attr, buf, 1);
7136 }
7137
7138 static ssize_t show_num_ports(struct device *dev,
7139                               struct device_attribute *attr, char *buf)
7140 {
7141         struct platform_device *plat_dev = to_platform_device(dev);
7142         struct niu_parent *p = plat_dev->dev.platform_data;
7143
7144         return sprintf(buf, "%d\n", p->num_ports);
7145 }
7146
7147 static struct device_attribute niu_parent_attributes[] = {
7148         __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
7149         __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
7150         __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
7151         __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
7152         __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
7153         {}
7154 };
7155
7156 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
7157                                                     union niu_parent_id *id,
7158                                                     u8 ptype)
7159 {
7160         struct platform_device *plat_dev;
7161         struct niu_parent *p;
7162         int i;
7163
7164         niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
7165
7166         plat_dev = platform_device_register_simple("niu", niu_parent_index,
7167                                                    NULL, 0);
7168         if (!plat_dev)
7169                 return NULL;
7170
7171         for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
7172                 int err = device_create_file(&plat_dev->dev,
7173                                              &niu_parent_attributes[i]);
7174                 if (err)
7175                         goto fail_unregister;
7176         }
7177
7178         p = kzalloc(sizeof(*p), GFP_KERNEL);
7179         if (!p)
7180                 goto fail_unregister;
7181
7182         p->index = niu_parent_index++;
7183
7184         plat_dev->dev.platform_data = p;
7185         p->plat_dev = plat_dev;
7186
7187         memcpy(&p->id, id, sizeof(*id));
7188         p->plat_type = ptype;
7189         INIT_LIST_HEAD(&p->list);
7190         atomic_set(&p->refcnt, 0);
7191         list_add(&p->list, &niu_parent_list);
7192         spin_lock_init(&p->lock);
7193
7194         p->rxdma_clock_divider = 7500;
7195
7196         p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
7197         if (p->plat_type == PLAT_TYPE_NIU)
7198                 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
7199
7200         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
7201                 int index = i - CLASS_CODE_USER_PROG1;
7202
7203                 p->tcam_key[index] = TCAM_KEY_TSEL;
7204                 p->flow_key[index] = (FLOW_KEY_IPSA |
7205                                       FLOW_KEY_IPDA |
7206                                       FLOW_KEY_PROTO |
7207                                       (FLOW_KEY_L4_BYTE12 <<
7208                                        FLOW_KEY_L4_0_SHIFT) |
7209                                       (FLOW_KEY_L4_BYTE12 <<
7210                                        FLOW_KEY_L4_1_SHIFT));
7211         }
7212
7213         for (i = 0; i < LDN_MAX + 1; i++)
7214                 p->ldg_map[i] = LDG_INVALID;
7215
7216         return p;
7217
7218 fail_unregister:
7219         platform_device_unregister(plat_dev);
7220         return NULL;
7221 }
7222
7223 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
7224                                                     union niu_parent_id *id,
7225                                                     u8 ptype)
7226 {
7227         struct niu_parent *p, *tmp;
7228         int port = np->port;
7229
7230         niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
7231                ptype, port);
7232
7233         mutex_lock(&niu_parent_lock);
7234         p = NULL;
7235         list_for_each_entry(tmp, &niu_parent_list, list) {
7236                 if (!memcmp(id, &tmp->id, sizeof(*id))) {
7237                         p = tmp;
7238                         break;
7239                 }
7240         }
7241         if (!p)
7242                 p = niu_new_parent(np, id, ptype);
7243
7244         if (p) {
7245                 char port_name[6];
7246                 int err;
7247
7248                 sprintf(port_name, "port%d", port);
7249                 err = sysfs_create_link(&p->plat_dev->dev.kobj,
7250                                         &np->device->kobj,
7251                                         port_name);
7252                 if (!err) {
7253                         p->ports[port] = np;
7254                         atomic_inc(&p->refcnt);
7255                 }
7256         }
7257         mutex_unlock(&niu_parent_lock);
7258
7259         return p;
7260 }
7261
7262 static void niu_put_parent(struct niu *np)
7263 {
7264         struct niu_parent *p = np->parent;
7265         u8 port = np->port;
7266         char port_name[6];
7267
7268         BUG_ON(!p || p->ports[port] != np);
7269
7270         niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
7271
7272         sprintf(port_name, "port%d", port);
7273
7274         mutex_lock(&niu_parent_lock);
7275
7276         sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
7277
7278         p->ports[port] = NULL;
7279         np->parent = NULL;
7280
7281         if (atomic_dec_and_test(&p->refcnt)) {
7282                 list_del(&p->list);
7283                 platform_device_unregister(p->plat_dev);
7284         }
7285
7286         mutex_unlock(&niu_parent_lock);
7287 }
7288
7289 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
7290                                     u64 *handle, gfp_t flag)
7291 {
7292         dma_addr_t dh;
7293         void *ret;
7294
7295         ret = dma_alloc_coherent(dev, size, &dh, flag);
7296         if (ret)
7297                 *handle = dh;
7298         return ret;
7299 }
7300
7301 static void niu_pci_free_coherent(struct device *dev, size_t size,
7302                                   void *cpu_addr, u64 handle)
7303 {
7304         dma_free_coherent(dev, size, cpu_addr, handle);
7305 }
7306
7307 static u64 niu_pci_map_page(struct device *dev, struct page *page,
7308                             unsigned long offset, size_t size,
7309                             enum dma_data_direction direction)
7310 {
7311         return dma_map_page(dev, page, offset, size, direction);
7312 }
7313
7314 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
7315                                size_t size, enum dma_data_direction direction)
7316 {
7317         return dma_unmap_page(dev, dma_address, size, direction);
7318 }
7319
7320 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
7321                               size_t size,
7322                               enum dma_data_direction direction)
7323 {
7324         return dma_map_single(dev, cpu_addr, size, direction);
7325 }
7326
7327 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
7328                                  size_t size,
7329                                  enum dma_data_direction direction)
7330 {
7331         dma_unmap_single(dev, dma_address, size, direction);
7332 }
7333
7334 static const struct niu_ops niu_pci_ops = {
7335         .alloc_coherent = niu_pci_alloc_coherent,
7336         .free_coherent  = niu_pci_free_coherent,
7337         .map_page       = niu_pci_map_page,
7338         .unmap_page     = niu_pci_unmap_page,
7339         .map_single     = niu_pci_map_single,
7340         .unmap_single   = niu_pci_unmap_single,
7341 };
7342
7343 static void __devinit niu_driver_version(void)
7344 {
7345         static int niu_version_printed;
7346
7347         if (niu_version_printed++ == 0)
7348                 pr_info("%s", version);
7349 }
7350
7351 static struct net_device * __devinit niu_alloc_and_init(
7352         struct device *gen_dev, struct pci_dev *pdev,
7353         struct of_device *op, const struct niu_ops *ops,
7354         u8 port)
7355 {
7356         struct net_device *dev = alloc_etherdev(sizeof(struct niu));
7357         struct niu *np;
7358
7359         if (!dev) {
7360                 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
7361                 return NULL;
7362         }
7363
7364         SET_NETDEV_DEV(dev, gen_dev);
7365
7366         np = netdev_priv(dev);
7367         np->dev = dev;
7368         np->pdev = pdev;
7369         np->op = op;
7370         np->device = gen_dev;
7371         np->ops = ops;
7372
7373         np->msg_enable = niu_debug;
7374
7375         spin_lock_init(&np->lock);
7376         INIT_WORK(&np->reset_task, niu_reset_task);
7377
7378         np->port = port;
7379
7380         return dev;
7381 }
7382
7383 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
7384 {
7385         dev->open = niu_open;
7386         dev->stop = niu_close;
7387         dev->get_stats = niu_get_stats;
7388         dev->set_multicast_list = niu_set_rx_mode;
7389         dev->set_mac_address = niu_set_mac_addr;
7390         dev->do_ioctl = niu_ioctl;
7391         dev->tx_timeout = niu_tx_timeout;
7392         dev->hard_start_xmit = niu_start_xmit;
7393         dev->ethtool_ops = &niu_ethtool_ops;
7394         dev->watchdog_timeo = NIU_TX_TIMEOUT;
7395         dev->change_mtu = niu_change_mtu;
7396 }
7397
7398 static void __devinit niu_device_announce(struct niu *np)
7399 {
7400         struct net_device *dev = np->dev;
7401         int i;
7402
7403         pr_info("%s: NIU Ethernet ", dev->name);
7404         for (i = 0; i < 6; i++)
7405                 printk("%2.2x%c", dev->dev_addr[i],
7406                        i == 5 ? '\n' : ':');
7407
7408         pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
7409                 dev->name,
7410                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
7411                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
7412                 (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
7413                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
7414                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
7415                 np->vpd.phy_type);
7416 }
7417
7418 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
7419                                       const struct pci_device_id *ent)
7420 {
7421         unsigned long niureg_base, niureg_len;
7422         union niu_parent_id parent_id;
7423         struct net_device *dev;
7424         struct niu *np;
7425         int err, pos;
7426         u64 dma_mask;
7427         u16 val16;
7428
7429         niu_driver_version();
7430
7431         err = pci_enable_device(pdev);
7432         if (err) {
7433                 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
7434                         "aborting.\n");
7435                 return err;
7436         }
7437
7438         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
7439             !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
7440                 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
7441                         "base addresses, aborting.\n");
7442                 err = -ENODEV;
7443                 goto err_out_disable_pdev;
7444         }
7445
7446         err = pci_request_regions(pdev, DRV_MODULE_NAME);
7447         if (err) {
7448                 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
7449                         "aborting.\n");
7450                 goto err_out_disable_pdev;
7451         }
7452
7453         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
7454         if (pos <= 0) {
7455                 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
7456                         "aborting.\n");
7457                 goto err_out_free_res;
7458         }
7459
7460         dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
7461                                  &niu_pci_ops, PCI_FUNC(pdev->devfn));
7462         if (!dev) {
7463                 err = -ENOMEM;
7464                 goto err_out_free_res;
7465         }
7466         np = netdev_priv(dev);
7467
7468         memset(&parent_id, 0, sizeof(parent_id));
7469         parent_id.pci.domain = pci_domain_nr(pdev->bus);
7470         parent_id.pci.bus = pdev->bus->number;
7471         parent_id.pci.device = PCI_SLOT(pdev->devfn);
7472
7473         np->parent = niu_get_parent(np, &parent_id,
7474                                     PLAT_TYPE_ATLAS);
7475         if (!np->parent) {
7476                 err = -ENOMEM;
7477                 goto err_out_free_dev;
7478         }
7479
7480         pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
7481         val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
7482         val16 |= (PCI_EXP_DEVCTL_CERE |
7483                   PCI_EXP_DEVCTL_NFERE |
7484                   PCI_EXP_DEVCTL_FERE |
7485                   PCI_EXP_DEVCTL_URRE |
7486                   PCI_EXP_DEVCTL_RELAX_EN);
7487         pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
7488
7489         dma_mask = DMA_44BIT_MASK;
7490         err = pci_set_dma_mask(pdev, dma_mask);
7491         if (!err) {
7492                 dev->features |= NETIF_F_HIGHDMA;
7493                 err = pci_set_consistent_dma_mask(pdev, dma_mask);
7494                 if (err) {
7495                         dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
7496                                 "DMA for consistent allocations, "
7497                                 "aborting.\n");
7498                         goto err_out_release_parent;
7499                 }
7500         }
7501         if (err || dma_mask == DMA_32BIT_MASK) {
7502                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7503                 if (err) {
7504                         dev_err(&pdev->dev, PFX "No usable DMA configuration, "
7505                                 "aborting.\n");
7506                         goto err_out_release_parent;
7507                 }
7508         }
7509
7510         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7511
7512         niureg_base = pci_resource_start(pdev, 0);
7513         niureg_len = pci_resource_len(pdev, 0);
7514
7515         np->regs = ioremap_nocache(niureg_base, niureg_len);
7516         if (!np->regs) {
7517                 dev_err(&pdev->dev, PFX "Cannot map device registers, "
7518                         "aborting.\n");
7519                 err = -ENOMEM;
7520                 goto err_out_release_parent;
7521         }
7522
7523         pci_set_master(pdev);
7524         pci_save_state(pdev);
7525
7526         dev->irq = pdev->irq;
7527
7528         niu_assign_netdev_ops(dev);
7529
7530         err = niu_get_invariants(np);
7531         if (err) {
7532                 if (err != -ENODEV)
7533                         dev_err(&pdev->dev, PFX "Problem fetching invariants "
7534                                 "of chip, aborting.\n");
7535                 goto err_out_iounmap;
7536         }
7537
7538         err = register_netdev(dev);
7539         if (err) {
7540                 dev_err(&pdev->dev, PFX "Cannot register net device, "
7541                         "aborting.\n");
7542                 goto err_out_iounmap;
7543         }
7544
7545         pci_set_drvdata(pdev, dev);
7546
7547         niu_device_announce(np);
7548
7549         return 0;
7550
7551 err_out_iounmap:
7552         if (np->regs) {
7553                 iounmap(np->regs);
7554                 np->regs = NULL;
7555         }
7556
7557 err_out_release_parent:
7558         niu_put_parent(np);
7559
7560 err_out_free_dev:
7561         free_netdev(dev);
7562
7563 err_out_free_res:
7564         pci_release_regions(pdev);
7565
7566 err_out_disable_pdev:
7567         pci_disable_device(pdev);
7568         pci_set_drvdata(pdev, NULL);
7569
7570         return err;
7571 }
7572
7573 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
7574 {
7575         struct net_device *dev = pci_get_drvdata(pdev);
7576
7577         if (dev) {
7578                 struct niu *np = netdev_priv(dev);
7579
7580                 unregister_netdev(dev);
7581                 if (np->regs) {
7582                         iounmap(np->regs);
7583                         np->regs = NULL;
7584                 }
7585
7586                 niu_ldg_free(np);
7587
7588                 niu_put_parent(np);
7589
7590                 free_netdev(dev);
7591                 pci_release_regions(pdev);
7592                 pci_disable_device(pdev);
7593                 pci_set_drvdata(pdev, NULL);
7594         }
7595 }
7596
7597 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
7598 {
7599         struct net_device *dev = pci_get_drvdata(pdev);
7600         struct niu *np = netdev_priv(dev);
7601         unsigned long flags;
7602
7603         if (!netif_running(dev))
7604                 return 0;
7605
7606         flush_scheduled_work();
7607         niu_netif_stop(np);
7608
7609         del_timer_sync(&np->timer);
7610
7611         spin_lock_irqsave(&np->lock, flags);
7612         niu_enable_interrupts(np, 0);
7613         spin_unlock_irqrestore(&np->lock, flags);
7614
7615         netif_device_detach(dev);
7616
7617         spin_lock_irqsave(&np->lock, flags);
7618         niu_stop_hw(np);
7619         spin_unlock_irqrestore(&np->lock, flags);
7620
7621         pci_save_state(pdev);
7622
7623         return 0;
7624 }
7625
7626 static int niu_resume(struct pci_dev *pdev)
7627 {
7628         struct net_device *dev = pci_get_drvdata(pdev);
7629         struct niu *np = netdev_priv(dev);
7630         unsigned long flags;
7631         int err;
7632
7633         if (!netif_running(dev))
7634                 return 0;
7635
7636         pci_restore_state(pdev);
7637
7638         netif_device_attach(dev);
7639
7640         spin_lock_irqsave(&np->lock, flags);
7641
7642         err = niu_init_hw(np);
7643         if (!err) {
7644                 np->timer.expires = jiffies + HZ;
7645                 add_timer(&np->timer);
7646                 niu_netif_start(np);
7647         }
7648
7649         spin_unlock_irqrestore(&np->lock, flags);
7650
7651         return err;
7652 }
7653
7654 static struct pci_driver niu_pci_driver = {
7655         .name           = DRV_MODULE_NAME,
7656         .id_table       = niu_pci_tbl,
7657         .probe          = niu_pci_init_one,
7658         .remove         = __devexit_p(niu_pci_remove_one),
7659         .suspend        = niu_suspend,
7660         .resume         = niu_resume,
7661 };
7662
7663 #ifdef CONFIG_SPARC64
7664 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
7665                                      u64 *dma_addr, gfp_t flag)
7666 {
7667         unsigned long order = get_order(size);
7668         unsigned long page = __get_free_pages(flag, order);
7669
7670         if (page == 0UL)
7671                 return NULL;
7672         memset((char *)page, 0, PAGE_SIZE << order);
7673         *dma_addr = __pa(page);
7674
7675         return (void *) page;
7676 }
7677
7678 static void niu_phys_free_coherent(struct device *dev, size_t size,
7679                                    void *cpu_addr, u64 handle)
7680 {
7681         unsigned long order = get_order(size);
7682
7683         free_pages((unsigned long) cpu_addr, order);
7684 }
7685
7686 static u64 niu_phys_map_page(struct device *dev, struct page *page,
7687                              unsigned long offset, size_t size,
7688                              enum dma_data_direction direction)
7689 {
7690         return page_to_phys(page) + offset;
7691 }
7692
7693 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
7694                                 size_t size, enum dma_data_direction direction)
7695 {
7696         /* Nothing to do.  */
7697 }
7698
7699 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
7700                                size_t size,
7701                                enum dma_data_direction direction)
7702 {
7703         return __pa(cpu_addr);
7704 }
7705
7706 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
7707                                   size_t size,
7708                                   enum dma_data_direction direction)
7709 {
7710         /* Nothing to do.  */
7711 }
7712
7713 static const struct niu_ops niu_phys_ops = {
7714         .alloc_coherent = niu_phys_alloc_coherent,
7715         .free_coherent  = niu_phys_free_coherent,
7716         .map_page       = niu_phys_map_page,
7717         .unmap_page     = niu_phys_unmap_page,
7718         .map_single     = niu_phys_map_single,
7719         .unmap_single   = niu_phys_unmap_single,
7720 };
7721
7722 static unsigned long res_size(struct resource *r)
7723 {
7724         return r->end - r->start + 1UL;
7725 }
7726
7727 static int __devinit niu_of_probe(struct of_device *op,
7728                                   const struct of_device_id *match)
7729 {
7730         union niu_parent_id parent_id;
7731         struct net_device *dev;
7732         struct niu *np;
7733         const u32 *reg;
7734         int err;
7735
7736         niu_driver_version();
7737
7738         reg = of_get_property(op->node, "reg", NULL);
7739         if (!reg) {
7740                 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
7741                         op->node->full_name);
7742                 return -ENODEV;
7743         }
7744
7745         dev = niu_alloc_and_init(&op->dev, NULL, op,
7746                                  &niu_phys_ops, reg[0] & 0x1);
7747         if (!dev) {
7748                 err = -ENOMEM;
7749                 goto err_out;
7750         }
7751         np = netdev_priv(dev);
7752
7753         memset(&parent_id, 0, sizeof(parent_id));
7754         parent_id.of = of_get_parent(op->node);
7755
7756         np->parent = niu_get_parent(np, &parent_id,
7757                                     PLAT_TYPE_NIU);
7758         if (!np->parent) {
7759                 err = -ENOMEM;
7760                 goto err_out_free_dev;
7761         }
7762
7763         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7764
7765         np->regs = of_ioremap(&op->resource[1], 0,
7766                               res_size(&op->resource[1]),
7767                               "niu regs");
7768         if (!np->regs) {
7769                 dev_err(&op->dev, PFX "Cannot map device registers, "
7770                         "aborting.\n");
7771                 err = -ENOMEM;
7772                 goto err_out_release_parent;
7773         }
7774
7775         np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
7776                                     res_size(&op->resource[2]),
7777                                     "niu vregs-1");
7778         if (!np->vir_regs_1) {
7779                 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
7780                         "aborting.\n");
7781                 err = -ENOMEM;
7782                 goto err_out_iounmap;
7783         }
7784
7785         np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
7786                                     res_size(&op->resource[3]),
7787                                     "niu vregs-2");
7788         if (!np->vir_regs_2) {
7789                 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
7790                         "aborting.\n");
7791                 err = -ENOMEM;
7792                 goto err_out_iounmap;
7793         }
7794
7795         niu_assign_netdev_ops(dev);
7796
7797         err = niu_get_invariants(np);
7798         if (err) {
7799                 if (err != -ENODEV)
7800                         dev_err(&op->dev, PFX "Problem fetching invariants "
7801                                 "of chip, aborting.\n");
7802                 goto err_out_iounmap;
7803         }
7804
7805         err = register_netdev(dev);
7806         if (err) {
7807                 dev_err(&op->dev, PFX "Cannot register net device, "
7808                         "aborting.\n");
7809                 goto err_out_iounmap;
7810         }
7811
7812         dev_set_drvdata(&op->dev, dev);
7813
7814         niu_device_announce(np);
7815
7816         return 0;
7817
7818 err_out_iounmap:
7819         if (np->vir_regs_1) {
7820                 of_iounmap(&op->resource[2], np->vir_regs_1,
7821                            res_size(&op->resource[2]));
7822                 np->vir_regs_1 = NULL;
7823         }
7824
7825         if (np->vir_regs_2) {
7826                 of_iounmap(&op->resource[3], np->vir_regs_2,
7827                            res_size(&op->resource[3]));
7828                 np->vir_regs_2 = NULL;
7829         }
7830
7831         if (np->regs) {
7832                 of_iounmap(&op->resource[1], np->regs,
7833                            res_size(&op->resource[1]));
7834                 np->regs = NULL;
7835         }
7836
7837 err_out_release_parent:
7838         niu_put_parent(np);
7839
7840 err_out_free_dev:
7841         free_netdev(dev);
7842
7843 err_out:
7844         return err;
7845 }
7846
7847 static int __devexit niu_of_remove(struct of_device *op)
7848 {
7849         struct net_device *dev = dev_get_drvdata(&op->dev);
7850
7851         if (dev) {
7852                 struct niu *np = netdev_priv(dev);
7853
7854                 unregister_netdev(dev);
7855
7856                 if (np->vir_regs_1) {
7857                         of_iounmap(&op->resource[2], np->vir_regs_1,
7858                                    res_size(&op->resource[2]));
7859                         np->vir_regs_1 = NULL;
7860                 }
7861
7862                 if (np->vir_regs_2) {
7863                         of_iounmap(&op->resource[3], np->vir_regs_2,
7864                                    res_size(&op->resource[3]));
7865                         np->vir_regs_2 = NULL;
7866                 }
7867
7868                 if (np->regs) {
7869                         of_iounmap(&op->resource[1], np->regs,
7870                                    res_size(&op->resource[1]));
7871                         np->regs = NULL;
7872                 }
7873
7874                 niu_ldg_free(np);
7875
7876                 niu_put_parent(np);
7877
7878                 free_netdev(dev);
7879                 dev_set_drvdata(&op->dev, NULL);
7880         }
7881         return 0;
7882 }
7883
7884 static struct of_device_id niu_match[] = {
7885         {
7886                 .name = "network",
7887                 .compatible = "SUNW,niusl",
7888         },
7889         {},
7890 };
7891 MODULE_DEVICE_TABLE(of, niu_match);
7892
7893 static struct of_platform_driver niu_of_driver = {
7894         .name           = "niu",
7895         .match_table    = niu_match,
7896         .probe          = niu_of_probe,
7897         .remove         = __devexit_p(niu_of_remove),
7898 };
7899
7900 #endif /* CONFIG_SPARC64 */
7901
7902 static int __init niu_init(void)
7903 {
7904         int err = 0;
7905
7906         BUILD_BUG_ON((PAGE_SIZE < 4 * 1024) ||
7907                      ((PAGE_SIZE > 32 * 1024) &&
7908                       ((PAGE_SIZE % (32 * 1024)) != 0 &&
7909                        (PAGE_SIZE % (16 * 1024)) != 0 &&
7910                        (PAGE_SIZE % (8 * 1024)) != 0 &&
7911                        (PAGE_SIZE % (4 * 1024)) != 0)));
7912
7913         niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
7914
7915 #ifdef CONFIG_SPARC64
7916         err = of_register_driver(&niu_of_driver, &of_bus_type);
7917 #endif
7918
7919         if (!err) {
7920                 err = pci_register_driver(&niu_pci_driver);
7921 #ifdef CONFIG_SPARC64
7922                 if (err)
7923                         of_unregister_driver(&niu_of_driver);
7924 #endif
7925         }
7926
7927         return err;
7928 }
7929
7930 static void __exit niu_exit(void)
7931 {
7932         pci_unregister_driver(&niu_pci_driver);
7933 #ifdef CONFIG_SPARC64
7934         of_unregister_driver(&niu_of_driver);
7935 #endif
7936 }
7937
7938 module_init(niu_init);
7939 module_exit(niu_exit);