Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / net / niu.c
1 /* niu.c: Neptune ethernet driver.
2  *
3  * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
4  */
5
6 #include <linux/module.h>
7 #include <linux/init.h>
8 #include <linux/pci.h>
9 #include <linux/dma-mapping.h>
10 #include <linux/netdevice.h>
11 #include <linux/ethtool.h>
12 #include <linux/etherdevice.h>
13 #include <linux/platform_device.h>
14 #include <linux/delay.h>
15 #include <linux/bitops.h>
16 #include <linux/mii.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ip.h>
20 #include <linux/in.h>
21 #include <linux/ipv6.h>
22 #include <linux/log2.h>
23 #include <linux/jiffies.h>
24 #include <linux/crc32.h>
25
26 #include <linux/io.h>
27
28 #ifdef CONFIG_SPARC64
29 #include <linux/of_device.h>
30 #endif
31
32 #include "niu.h"
33
34 #define DRV_MODULE_NAME         "niu"
35 #define PFX DRV_MODULE_NAME     ": "
36 #define DRV_MODULE_VERSION      "0.9"
37 #define DRV_MODULE_RELDATE      "May 4, 2008"
38
39 static char version[] __devinitdata =
40         DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
41
42 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
43 MODULE_DESCRIPTION("NIU ethernet driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(DRV_MODULE_VERSION);
46
47 #ifndef DMA_44BIT_MASK
48 #define DMA_44BIT_MASK  0x00000fffffffffffULL
49 #endif
50
51 #ifndef readq
52 static u64 readq(void __iomem *reg)
53 {
54         return (((u64)readl(reg + 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 serdes_init_10g_serdes(struct niu *np);
117
118 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
119                                      u64 bits, int limit, int delay)
120 {
121         while (--limit >= 0) {
122                 u64 val = nr64_mac(reg);
123
124                 if (!(val & bits))
125                         break;
126                 udelay(delay);
127         }
128         if (limit < 0)
129                 return -ENODEV;
130         return 0;
131 }
132
133 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
134                                         u64 bits, int limit, int delay,
135                                         const char *reg_name)
136 {
137         int err;
138
139         nw64_mac(reg, bits);
140         err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
141         if (err)
142                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
143                         "would not clear, val[%llx]\n",
144                         np->dev->name, (unsigned long long) bits, reg_name,
145                         (unsigned long long) nr64_mac(reg));
146         return err;
147 }
148
149 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
150 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
151         __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
152 })
153
154 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
155                                      u64 bits, int limit, int delay)
156 {
157         while (--limit >= 0) {
158                 u64 val = nr64_ipp(reg);
159
160                 if (!(val & bits))
161                         break;
162                 udelay(delay);
163         }
164         if (limit < 0)
165                 return -ENODEV;
166         return 0;
167 }
168
169 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
170                                         u64 bits, int limit, int delay,
171                                         const char *reg_name)
172 {
173         int err;
174         u64 val;
175
176         val = nr64_ipp(reg);
177         val |= bits;
178         nw64_ipp(reg, val);
179
180         err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
181         if (err)
182                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
183                         "would not clear, val[%llx]\n",
184                         np->dev->name, (unsigned long long) bits, reg_name,
185                         (unsigned long long) nr64_ipp(reg));
186         return err;
187 }
188
189 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
190 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
191         __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
192 })
193
194 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
195                                  u64 bits, int limit, int delay)
196 {
197         while (--limit >= 0) {
198                 u64 val = nr64(reg);
199
200                 if (!(val & bits))
201                         break;
202                 udelay(delay);
203         }
204         if (limit < 0)
205                 return -ENODEV;
206         return 0;
207 }
208
209 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
210 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
211         __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
212 })
213
214 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
215                                     u64 bits, int limit, int delay,
216                                     const char *reg_name)
217 {
218         int err;
219
220         nw64(reg, bits);
221         err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
222         if (err)
223                 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
224                         "would not clear, val[%llx]\n",
225                         np->dev->name, (unsigned long long) bits, reg_name,
226                         (unsigned long long) nr64(reg));
227         return err;
228 }
229
230 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
231 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
232         __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
233 })
234
235 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
236 {
237         u64 val = (u64) lp->timer;
238
239         if (on)
240                 val |= LDG_IMGMT_ARM;
241
242         nw64(LDG_IMGMT(lp->ldg_num), val);
243 }
244
245 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
246 {
247         unsigned long mask_reg, bits;
248         u64 val;
249
250         if (ldn < 0 || ldn > LDN_MAX)
251                 return -EINVAL;
252
253         if (ldn < 64) {
254                 mask_reg = LD_IM0(ldn);
255                 bits = LD_IM0_MASK;
256         } else {
257                 mask_reg = LD_IM1(ldn - 64);
258                 bits = LD_IM1_MASK;
259         }
260
261         val = nr64(mask_reg);
262         if (on)
263                 val &= ~bits;
264         else
265                 val |= bits;
266         nw64(mask_reg, val);
267
268         return 0;
269 }
270
271 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
272 {
273         struct niu_parent *parent = np->parent;
274         int i;
275
276         for (i = 0; i <= LDN_MAX; i++) {
277                 int err;
278
279                 if (parent->ldg_map[i] != lp->ldg_num)
280                         continue;
281
282                 err = niu_ldn_irq_enable(np, i, on);
283                 if (err)
284                         return err;
285         }
286         return 0;
287 }
288
289 static int niu_enable_interrupts(struct niu *np, int on)
290 {
291         int i;
292
293         for (i = 0; i < np->num_ldg; i++) {
294                 struct niu_ldg *lp = &np->ldg[i];
295                 int err;
296
297                 err = niu_enable_ldn_in_ldg(np, lp, on);
298                 if (err)
299                         return err;
300         }
301         for (i = 0; i < np->num_ldg; i++)
302                 niu_ldg_rearm(np, &np->ldg[i], on);
303
304         return 0;
305 }
306
307 static u32 phy_encode(u32 type, int port)
308 {
309         return (type << (port * 2));
310 }
311
312 static u32 phy_decode(u32 val, int port)
313 {
314         return (val >> (port * 2)) & PORT_TYPE_MASK;
315 }
316
317 static int mdio_wait(struct niu *np)
318 {
319         int limit = 1000;
320         u64 val;
321
322         while (--limit > 0) {
323                 val = nr64(MIF_FRAME_OUTPUT);
324                 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
325                         return val & MIF_FRAME_OUTPUT_DATA;
326
327                 udelay(10);
328         }
329
330         return -ENODEV;
331 }
332
333 static int mdio_read(struct niu *np, int port, int dev, int reg)
334 {
335         int err;
336
337         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
338         err = mdio_wait(np);
339         if (err < 0)
340                 return err;
341
342         nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
343         return mdio_wait(np);
344 }
345
346 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
347 {
348         int err;
349
350         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
351         err = mdio_wait(np);
352         if (err < 0)
353                 return err;
354
355         nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
356         err = mdio_wait(np);
357         if (err < 0)
358                 return err;
359
360         return 0;
361 }
362
363 static int mii_read(struct niu *np, int port, int reg)
364 {
365         nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
366         return mdio_wait(np);
367 }
368
369 static int mii_write(struct niu *np, int port, int reg, int data)
370 {
371         int err;
372
373         nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
374         err = mdio_wait(np);
375         if (err < 0)
376                 return err;
377
378         return 0;
379 }
380
381 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
382 {
383         int err;
384
385         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
386                          ESR2_TI_PLL_TX_CFG_L(channel),
387                          val & 0xffff);
388         if (!err)
389                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
390                                  ESR2_TI_PLL_TX_CFG_H(channel),
391                                  val >> 16);
392         return err;
393 }
394
395 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
396 {
397         int err;
398
399         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
400                          ESR2_TI_PLL_RX_CFG_L(channel),
401                          val & 0xffff);
402         if (!err)
403                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
404                                  ESR2_TI_PLL_RX_CFG_H(channel),
405                                  val >> 16);
406         return err;
407 }
408
409 /* Mode is always 10G fiber.  */
410 static int serdes_init_niu(struct niu *np)
411 {
412         struct niu_link_config *lp = &np->link_config;
413         u32 tx_cfg, rx_cfg;
414         unsigned long i;
415
416         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
417         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
418                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
419                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
420
421         if (lp->loopback_mode == LOOPBACK_PHY) {
422                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
423
424                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
425                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
426
427                 tx_cfg |= PLL_TX_CFG_ENTEST;
428                 rx_cfg |= PLL_RX_CFG_ENTEST;
429         }
430
431         /* Initialize all 4 lanes of the SERDES.  */
432         for (i = 0; i < 4; i++) {
433                 int err = esr2_set_tx_cfg(np, i, tx_cfg);
434                 if (err)
435                         return err;
436         }
437
438         for (i = 0; i < 4; i++) {
439                 int err = esr2_set_rx_cfg(np, i, rx_cfg);
440                 if (err)
441                         return err;
442         }
443
444         return 0;
445 }
446
447 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
448 {
449         int err;
450
451         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
452         if (err >= 0) {
453                 *val = (err & 0xffff);
454                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
455                                 ESR_RXTX_CTRL_H(chan));
456                 if (err >= 0)
457                         *val |= ((err & 0xffff) << 16);
458                 err = 0;
459         }
460         return err;
461 }
462
463 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
464 {
465         int err;
466
467         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
468                         ESR_GLUE_CTRL0_L(chan));
469         if (err >= 0) {
470                 *val = (err & 0xffff);
471                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
472                                 ESR_GLUE_CTRL0_H(chan));
473                 if (err >= 0) {
474                         *val |= ((err & 0xffff) << 16);
475                         err = 0;
476                 }
477         }
478         return err;
479 }
480
481 static int esr_read_reset(struct niu *np, u32 *val)
482 {
483         int err;
484
485         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
486                         ESR_RXTX_RESET_CTRL_L);
487         if (err >= 0) {
488                 *val = (err & 0xffff);
489                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
490                                 ESR_RXTX_RESET_CTRL_H);
491                 if (err >= 0) {
492                         *val |= ((err & 0xffff) << 16);
493                         err = 0;
494                 }
495         }
496         return err;
497 }
498
499 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
500 {
501         int err;
502
503         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
504                          ESR_RXTX_CTRL_L(chan), val & 0xffff);
505         if (!err)
506                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
507                                  ESR_RXTX_CTRL_H(chan), (val >> 16));
508         return err;
509 }
510
511 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
512 {
513         int err;
514
515         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
516                         ESR_GLUE_CTRL0_L(chan), val & 0xffff);
517         if (!err)
518                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
519                                  ESR_GLUE_CTRL0_H(chan), (val >> 16));
520         return err;
521 }
522
523 static int esr_reset(struct niu *np)
524 {
525         u32 reset;
526         int err;
527
528         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
529                          ESR_RXTX_RESET_CTRL_L, 0x0000);
530         if (err)
531                 return err;
532         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
533                          ESR_RXTX_RESET_CTRL_H, 0xffff);
534         if (err)
535                 return err;
536         udelay(200);
537
538         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
539                          ESR_RXTX_RESET_CTRL_L, 0xffff);
540         if (err)
541                 return err;
542         udelay(200);
543
544         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
545                          ESR_RXTX_RESET_CTRL_H, 0x0000);
546         if (err)
547                 return err;
548         udelay(200);
549
550         err = esr_read_reset(np, &reset);
551         if (err)
552                 return err;
553         if (reset != 0) {
554                 dev_err(np->device, PFX "Port %u ESR_RESET "
555                         "did not clear [%08x]\n",
556                         np->port, reset);
557                 return -ENODEV;
558         }
559
560         return 0;
561 }
562
563 static int serdes_init_10g(struct niu *np)
564 {
565         struct niu_link_config *lp = &np->link_config;
566         unsigned long ctrl_reg, test_cfg_reg, i;
567         u64 ctrl_val, test_cfg_val, sig, mask, val;
568         int err;
569
570         switch (np->port) {
571         case 0:
572                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
573                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
574                 break;
575         case 1:
576                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
577                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
578                 break;
579
580         default:
581                 return -EINVAL;
582         }
583         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
584                     ENET_SERDES_CTRL_SDET_1 |
585                     ENET_SERDES_CTRL_SDET_2 |
586                     ENET_SERDES_CTRL_SDET_3 |
587                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
588                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
589                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
590                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
591                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
592                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
593                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
594                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
595         test_cfg_val = 0;
596
597         if (lp->loopback_mode == LOOPBACK_PHY) {
598                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
599                                   ENET_SERDES_TEST_MD_0_SHIFT) |
600                                  (ENET_TEST_MD_PAD_LOOPBACK <<
601                                   ENET_SERDES_TEST_MD_1_SHIFT) |
602                                  (ENET_TEST_MD_PAD_LOOPBACK <<
603                                   ENET_SERDES_TEST_MD_2_SHIFT) |
604                                  (ENET_TEST_MD_PAD_LOOPBACK <<
605                                   ENET_SERDES_TEST_MD_3_SHIFT));
606         }
607
608         nw64(ctrl_reg, ctrl_val);
609         nw64(test_cfg_reg, test_cfg_val);
610
611         /* Initialize all 4 lanes of the SERDES.  */
612         for (i = 0; i < 4; i++) {
613                 u32 rxtx_ctrl, glue0;
614
615                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
616                 if (err)
617                         return err;
618                 err = esr_read_glue0(np, i, &glue0);
619                 if (err)
620                         return err;
621
622                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
623                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
624                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
625
626                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
627                            ESR_GLUE_CTRL0_THCNT |
628                            ESR_GLUE_CTRL0_BLTIME);
629                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
630                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
631                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
632                           (BLTIME_300_CYCLES <<
633                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
634
635                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
636                 if (err)
637                         return err;
638                 err = esr_write_glue0(np, i, glue0);
639                 if (err)
640                         return err;
641         }
642
643         err = esr_reset(np);
644         if (err)
645                 return err;
646
647         sig = nr64(ESR_INT_SIGNALS);
648         switch (np->port) {
649         case 0:
650                 mask = ESR_INT_SIGNALS_P0_BITS;
651                 val = (ESR_INT_SRDY0_P0 |
652                        ESR_INT_DET0_P0 |
653                        ESR_INT_XSRDY_P0 |
654                        ESR_INT_XDP_P0_CH3 |
655                        ESR_INT_XDP_P0_CH2 |
656                        ESR_INT_XDP_P0_CH1 |
657                        ESR_INT_XDP_P0_CH0);
658                 break;
659
660         case 1:
661                 mask = ESR_INT_SIGNALS_P1_BITS;
662                 val = (ESR_INT_SRDY0_P1 |
663                        ESR_INT_DET0_P1 |
664                        ESR_INT_XSRDY_P1 |
665                        ESR_INT_XDP_P1_CH3 |
666                        ESR_INT_XDP_P1_CH2 |
667                        ESR_INT_XDP_P1_CH1 |
668                        ESR_INT_XDP_P1_CH0);
669                 break;
670
671         default:
672                 return -EINVAL;
673         }
674
675         if ((sig & mask) != val) {
676                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
677                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
678                         return 0;
679                 }
680                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
681                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
682                 return -ENODEV;
683         }
684         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
685                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
686         return 0;
687 }
688
689 static int serdes_init_1g(struct niu *np)
690 {
691         u64 val;
692
693         val = nr64(ENET_SERDES_1_PLL_CFG);
694         val &= ~ENET_SERDES_PLL_FBDIV2;
695         switch (np->port) {
696         case 0:
697                 val |= ENET_SERDES_PLL_HRATE0;
698                 break;
699         case 1:
700                 val |= ENET_SERDES_PLL_HRATE1;
701                 break;
702         case 2:
703                 val |= ENET_SERDES_PLL_HRATE2;
704                 break;
705         case 3:
706                 val |= ENET_SERDES_PLL_HRATE3;
707                 break;
708         default:
709                 return -EINVAL;
710         }
711         nw64(ENET_SERDES_1_PLL_CFG, val);
712
713         return 0;
714 }
715
716 static int serdes_init_1g_serdes(struct niu *np)
717 {
718         struct niu_link_config *lp = &np->link_config;
719         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
720         u64 ctrl_val, test_cfg_val, sig, mask, val;
721         int err;
722         u64 reset_val, val_rd;
723
724         val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
725                 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
726                 ENET_SERDES_PLL_FBDIV0;
727         switch (np->port) {
728         case 0:
729                 reset_val =  ENET_SERDES_RESET_0;
730                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
731                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
732                 pll_cfg = ENET_SERDES_0_PLL_CFG;
733                 break;
734         case 1:
735                 reset_val =  ENET_SERDES_RESET_1;
736                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
737                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
738                 pll_cfg = ENET_SERDES_1_PLL_CFG;
739                 break;
740
741         default:
742                 return -EINVAL;
743         }
744         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
745                     ENET_SERDES_CTRL_SDET_1 |
746                     ENET_SERDES_CTRL_SDET_2 |
747                     ENET_SERDES_CTRL_SDET_3 |
748                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
749                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
750                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
751                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
752                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
753                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
754                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
755                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
756         test_cfg_val = 0;
757
758         if (lp->loopback_mode == LOOPBACK_PHY) {
759                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
760                                   ENET_SERDES_TEST_MD_0_SHIFT) |
761                                  (ENET_TEST_MD_PAD_LOOPBACK <<
762                                   ENET_SERDES_TEST_MD_1_SHIFT) |
763                                  (ENET_TEST_MD_PAD_LOOPBACK <<
764                                   ENET_SERDES_TEST_MD_2_SHIFT) |
765                                  (ENET_TEST_MD_PAD_LOOPBACK <<
766                                   ENET_SERDES_TEST_MD_3_SHIFT));
767         }
768
769         nw64(ENET_SERDES_RESET, reset_val);
770         mdelay(20);
771         val_rd = nr64(ENET_SERDES_RESET);
772         val_rd &= ~reset_val;
773         nw64(pll_cfg, val);
774         nw64(ctrl_reg, ctrl_val);
775         nw64(test_cfg_reg, test_cfg_val);
776         nw64(ENET_SERDES_RESET, val_rd);
777         mdelay(2000);
778
779         /* Initialize all 4 lanes of the SERDES.  */
780         for (i = 0; i < 4; i++) {
781                 u32 rxtx_ctrl, glue0;
782
783                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
784                 if (err)
785                         return err;
786                 err = esr_read_glue0(np, i, &glue0);
787                 if (err)
788                         return err;
789
790                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
791                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
792                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
793
794                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
795                            ESR_GLUE_CTRL0_THCNT |
796                            ESR_GLUE_CTRL0_BLTIME);
797                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
798                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
799                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
800                           (BLTIME_300_CYCLES <<
801                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
802
803                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
804                 if (err)
805                         return err;
806                 err = esr_write_glue0(np, i, glue0);
807                 if (err)
808                         return err;
809         }
810
811
812         sig = nr64(ESR_INT_SIGNALS);
813         switch (np->port) {
814         case 0:
815                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
816                 mask = val;
817                 break;
818
819         case 1:
820                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
821                 mask = val;
822                 break;
823
824         default:
825                 return -EINVAL;
826         }
827
828         if ((sig & mask) != val) {
829                 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
830                         "[%08x]\n", np->port, (int) (sig & mask), (int) val);
831                 return -ENODEV;
832         }
833
834         return 0;
835 }
836
837 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
838 {
839         struct niu_link_config *lp = &np->link_config;
840         int link_up;
841         u64 val;
842         u16 current_speed;
843         unsigned long flags;
844         u8 current_duplex;
845
846         link_up = 0;
847         current_speed = SPEED_INVALID;
848         current_duplex = DUPLEX_INVALID;
849
850         spin_lock_irqsave(&np->lock, flags);
851
852         val = nr64_pcs(PCS_MII_STAT);
853
854         if (val & PCS_MII_STAT_LINK_STATUS) {
855                 link_up = 1;
856                 current_speed = SPEED_1000;
857                 current_duplex = DUPLEX_FULL;
858         }
859
860         lp->active_speed = current_speed;
861         lp->active_duplex = current_duplex;
862         spin_unlock_irqrestore(&np->lock, flags);
863
864         *link_up_p = link_up;
865         return 0;
866 }
867
868 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
869 {
870         unsigned long flags;
871         struct niu_link_config *lp = &np->link_config;
872         int link_up = 0;
873         int link_ok = 1;
874         u64 val, val2;
875         u16 current_speed;
876         u8 current_duplex;
877
878         if (!(np->flags & NIU_FLAGS_10G))
879                 return link_status_1g_serdes(np, link_up_p);
880
881         current_speed = SPEED_INVALID;
882         current_duplex = DUPLEX_INVALID;
883         spin_lock_irqsave(&np->lock, flags);
884
885         val = nr64_xpcs(XPCS_STATUS(0));
886         val2 = nr64_mac(XMAC_INTER2);
887         if (val2 & 0x01000000)
888                 link_ok = 0;
889
890         if ((val & 0x1000ULL) && link_ok) {
891                 link_up = 1;
892                 current_speed = SPEED_10000;
893                 current_duplex = DUPLEX_FULL;
894         }
895         lp->active_speed = current_speed;
896         lp->active_duplex = current_duplex;
897         spin_unlock_irqrestore(&np->lock, flags);
898         *link_up_p = link_up;
899         return 0;
900 }
901
902 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
903 {
904         struct niu_link_config *lp = &np->link_config;
905         u16 current_speed, bmsr;
906         unsigned long flags;
907         u8 current_duplex;
908         int err, link_up;
909
910         link_up = 0;
911         current_speed = SPEED_INVALID;
912         current_duplex = DUPLEX_INVALID;
913
914         spin_lock_irqsave(&np->lock, flags);
915
916         err = -EINVAL;
917
918         err = mii_read(np, np->phy_addr, MII_BMSR);
919         if (err < 0)
920                 goto out;
921
922         bmsr = err;
923         if (bmsr & BMSR_LSTATUS) {
924                 u16 adv, lpa, common, estat;
925
926                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
927                 if (err < 0)
928                         goto out;
929                 adv = err;
930
931                 err = mii_read(np, np->phy_addr, MII_LPA);
932                 if (err < 0)
933                         goto out;
934                 lpa = err;
935
936                 common = adv & lpa;
937
938                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
939                 if (err < 0)
940                         goto out;
941                 estat = err;
942                 link_up = 1;
943                 current_speed = SPEED_1000;
944                 current_duplex = DUPLEX_FULL;
945
946         }
947         lp->active_speed = current_speed;
948         lp->active_duplex = current_duplex;
949         err = 0;
950
951 out:
952         spin_unlock_irqrestore(&np->lock, flags);
953
954         *link_up_p = link_up;
955         return err;
956 }
957
958 static int bcm8704_reset(struct niu *np)
959 {
960         int err, limit;
961
962         err = mdio_read(np, np->phy_addr,
963                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
964         if (err < 0)
965                 return err;
966         err |= BMCR_RESET;
967         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
968                          MII_BMCR, err);
969         if (err)
970                 return err;
971
972         limit = 1000;
973         while (--limit >= 0) {
974                 err = mdio_read(np, np->phy_addr,
975                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
976                 if (err < 0)
977                         return err;
978                 if (!(err & BMCR_RESET))
979                         break;
980         }
981         if (limit < 0) {
982                 dev_err(np->device, PFX "Port %u PHY will not reset "
983                         "(bmcr=%04x)\n", np->port, (err & 0xffff));
984                 return -ENODEV;
985         }
986         return 0;
987 }
988
989 /* When written, certain PHY registers need to be read back twice
990  * in order for the bits to settle properly.
991  */
992 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
993 {
994         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
995         if (err < 0)
996                 return err;
997         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
998         if (err < 0)
999                 return err;
1000         return 0;
1001 }
1002
1003 static int bcm8706_init_user_dev3(struct niu *np)
1004 {
1005         int err;
1006
1007
1008         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1009                         BCM8704_USER_OPT_DIGITAL_CTRL);
1010         if (err < 0)
1011                 return err;
1012         err &= ~USER_ODIG_CTRL_GPIOS;
1013         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1014         err |=  USER_ODIG_CTRL_RESV2;
1015         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1016                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1017         if (err)
1018                 return err;
1019
1020         mdelay(1000);
1021
1022         return 0;
1023 }
1024
1025 static int bcm8704_init_user_dev3(struct niu *np)
1026 {
1027         int err;
1028
1029         err = mdio_write(np, np->phy_addr,
1030                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1031                          (USER_CONTROL_OPTXRST_LVL |
1032                           USER_CONTROL_OPBIASFLT_LVL |
1033                           USER_CONTROL_OBTMPFLT_LVL |
1034                           USER_CONTROL_OPPRFLT_LVL |
1035                           USER_CONTROL_OPTXFLT_LVL |
1036                           USER_CONTROL_OPRXLOS_LVL |
1037                           USER_CONTROL_OPRXFLT_LVL |
1038                           USER_CONTROL_OPTXON_LVL |
1039                           (0x3f << USER_CONTROL_RES1_SHIFT)));
1040         if (err)
1041                 return err;
1042
1043         err = mdio_write(np, np->phy_addr,
1044                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1045                          (USER_PMD_TX_CTL_XFP_CLKEN |
1046                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1047                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1048                           USER_PMD_TX_CTL_TSCK_LPWREN));
1049         if (err)
1050                 return err;
1051
1052         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1053         if (err)
1054                 return err;
1055         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1056         if (err)
1057                 return err;
1058
1059         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1060                         BCM8704_USER_OPT_DIGITAL_CTRL);
1061         if (err < 0)
1062                 return err;
1063         err &= ~USER_ODIG_CTRL_GPIOS;
1064         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1065         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1066                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1067         if (err)
1068                 return err;
1069
1070         mdelay(1000);
1071
1072         return 0;
1073 }
1074
1075 static int mrvl88x2011_act_led(struct niu *np, int val)
1076 {
1077         int     err;
1078
1079         err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1080                 MRVL88X2011_LED_8_TO_11_CTL);
1081         if (err < 0)
1082                 return err;
1083
1084         err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1085         err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1086
1087         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1088                           MRVL88X2011_LED_8_TO_11_CTL, err);
1089 }
1090
1091 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1092 {
1093         int     err;
1094
1095         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1096                         MRVL88X2011_LED_BLINK_CTL);
1097         if (err >= 0) {
1098                 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1099                 err |= (rate << 4);
1100
1101                 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1102                                  MRVL88X2011_LED_BLINK_CTL, err);
1103         }
1104
1105         return err;
1106 }
1107
1108 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1109 {
1110         int     err;
1111
1112         /* Set LED functions */
1113         err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1114         if (err)
1115                 return err;
1116
1117         /* led activity */
1118         err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1119         if (err)
1120                 return err;
1121
1122         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1123                         MRVL88X2011_GENERAL_CTL);
1124         if (err < 0)
1125                 return err;
1126
1127         err |= MRVL88X2011_ENA_XFPREFCLK;
1128
1129         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1130                          MRVL88X2011_GENERAL_CTL, err);
1131         if (err < 0)
1132                 return err;
1133
1134         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1135                         MRVL88X2011_PMA_PMD_CTL_1);
1136         if (err < 0)
1137                 return err;
1138
1139         if (np->link_config.loopback_mode == LOOPBACK_MAC)
1140                 err |= MRVL88X2011_LOOPBACK;
1141         else
1142                 err &= ~MRVL88X2011_LOOPBACK;
1143
1144         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1145                          MRVL88X2011_PMA_PMD_CTL_1, err);
1146         if (err < 0)
1147                 return err;
1148
1149         /* Enable PMD  */
1150         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1151                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1152 }
1153
1154
1155 static int xcvr_diag_bcm870x(struct niu *np)
1156 {
1157         u16 analog_stat0, tx_alarm_status;
1158         int err = 0;
1159
1160 #if 1
1161         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1162                         MII_STAT1000);
1163         if (err < 0)
1164                 return err;
1165         pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
1166                 np->port, err);
1167
1168         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1169         if (err < 0)
1170                 return err;
1171         pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
1172                 np->port, err);
1173
1174         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1175                         MII_NWAYTEST);
1176         if (err < 0)
1177                 return err;
1178         pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
1179                 np->port, err);
1180 #endif
1181
1182         /* XXX dig this out it might not be so useful XXX */
1183         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1184                         BCM8704_USER_ANALOG_STATUS0);
1185         if (err < 0)
1186                 return err;
1187         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1188                         BCM8704_USER_ANALOG_STATUS0);
1189         if (err < 0)
1190                 return err;
1191         analog_stat0 = err;
1192
1193         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1194                         BCM8704_USER_TX_ALARM_STATUS);
1195         if (err < 0)
1196                 return err;
1197         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1198                         BCM8704_USER_TX_ALARM_STATUS);
1199         if (err < 0)
1200                 return err;
1201         tx_alarm_status = err;
1202
1203         if (analog_stat0 != 0x03fc) {
1204                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1205                         pr_info(PFX "Port %u cable not connected "
1206                                 "or bad cable.\n", np->port);
1207                 } else if (analog_stat0 == 0x639c) {
1208                         pr_info(PFX "Port %u optical module is bad "
1209                                 "or missing.\n", np->port);
1210                 }
1211         }
1212
1213         return 0;
1214 }
1215
1216 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1217 {
1218         struct niu_link_config *lp = &np->link_config;
1219         int err;
1220
1221         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1222                         MII_BMCR);
1223         if (err < 0)
1224                 return err;
1225
1226         err &= ~BMCR_LOOPBACK;
1227
1228         if (lp->loopback_mode == LOOPBACK_MAC)
1229                 err |= BMCR_LOOPBACK;
1230
1231         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1232                          MII_BMCR, err);
1233         if (err)
1234                 return err;
1235
1236         return 0;
1237 }
1238
1239 static int xcvr_init_10g_bcm8706(struct niu *np)
1240 {
1241         int err = 0;
1242         u64 val;
1243
1244         if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1245             (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1246                         return err;
1247
1248         val = nr64_mac(XMAC_CONFIG);
1249         val &= ~XMAC_CONFIG_LED_POLARITY;
1250         val |= XMAC_CONFIG_FORCE_LED_ON;
1251         nw64_mac(XMAC_CONFIG, val);
1252
1253         val = nr64(MIF_CONFIG);
1254         val |= MIF_CONFIG_INDIRECT_MODE;
1255         nw64(MIF_CONFIG, val);
1256
1257         err = bcm8704_reset(np);
1258         if (err)
1259                 return err;
1260
1261         err = xcvr_10g_set_lb_bcm870x(np);
1262         if (err)
1263                 return err;
1264
1265         err = bcm8706_init_user_dev3(np);
1266         if (err)
1267                 return err;
1268
1269         err = xcvr_diag_bcm870x(np);
1270         if (err)
1271                 return err;
1272
1273         return 0;
1274 }
1275
1276 static int xcvr_init_10g_bcm8704(struct niu *np)
1277 {
1278         int err;
1279
1280         err = bcm8704_reset(np);
1281         if (err)
1282                 return err;
1283
1284         err = bcm8704_init_user_dev3(np);
1285         if (err)
1286                 return err;
1287
1288         err = xcvr_10g_set_lb_bcm870x(np);
1289         if (err)
1290                 return err;
1291
1292         err =  xcvr_diag_bcm870x(np);
1293         if (err)
1294                 return err;
1295
1296         return 0;
1297 }
1298
1299 static int xcvr_init_10g(struct niu *np)
1300 {
1301         int phy_id, err;
1302         u64 val;
1303
1304         val = nr64_mac(XMAC_CONFIG);
1305         val &= ~XMAC_CONFIG_LED_POLARITY;
1306         val |= XMAC_CONFIG_FORCE_LED_ON;
1307         nw64_mac(XMAC_CONFIG, val);
1308
1309         /* XXX shared resource, lock parent XXX */
1310         val = nr64(MIF_CONFIG);
1311         val |= MIF_CONFIG_INDIRECT_MODE;
1312         nw64(MIF_CONFIG, val);
1313
1314         phy_id = phy_decode(np->parent->port_phy, np->port);
1315         phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1316
1317         /* handle different phy types */
1318         switch (phy_id & NIU_PHY_ID_MASK) {
1319         case NIU_PHY_ID_MRVL88X2011:
1320                 err = xcvr_init_10g_mrvl88x2011(np);
1321                 break;
1322
1323         default: /* bcom 8704 */
1324                 err = xcvr_init_10g_bcm8704(np);
1325                 break;
1326         }
1327
1328         return 0;
1329 }
1330
1331 static int mii_reset(struct niu *np)
1332 {
1333         int limit, err;
1334
1335         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1336         if (err)
1337                 return err;
1338
1339         limit = 1000;
1340         while (--limit >= 0) {
1341                 udelay(500);
1342                 err = mii_read(np, np->phy_addr, MII_BMCR);
1343                 if (err < 0)
1344                         return err;
1345                 if (!(err & BMCR_RESET))
1346                         break;
1347         }
1348         if (limit < 0) {
1349                 dev_err(np->device, PFX "Port %u MII would not reset, "
1350                         "bmcr[%04x]\n", np->port, err);
1351                 return -ENODEV;
1352         }
1353
1354         return 0;
1355 }
1356
1357 static int xcvr_init_1g_rgmii(struct niu *np)
1358 {
1359         int err;
1360         u64 val;
1361         u16 bmcr, bmsr, estat;
1362
1363         val = nr64(MIF_CONFIG);
1364         val &= ~MIF_CONFIG_INDIRECT_MODE;
1365         nw64(MIF_CONFIG, val);
1366
1367         err = mii_reset(np);
1368         if (err)
1369                 return err;
1370
1371         err = mii_read(np, np->phy_addr, MII_BMSR);
1372         if (err < 0)
1373                 return err;
1374         bmsr = err;
1375
1376         estat = 0;
1377         if (bmsr & BMSR_ESTATEN) {
1378                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1379                 if (err < 0)
1380                         return err;
1381                 estat = err;
1382         }
1383
1384         bmcr = 0;
1385         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1386         if (err)
1387                 return err;
1388
1389         if (bmsr & BMSR_ESTATEN) {
1390                 u16 ctrl1000 = 0;
1391
1392                 if (estat & ESTATUS_1000_TFULL)
1393                         ctrl1000 |= ADVERTISE_1000FULL;
1394                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1395                 if (err)
1396                         return err;
1397         }
1398
1399         bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1400
1401         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1402         if (err)
1403                 return err;
1404
1405         err = mii_read(np, np->phy_addr, MII_BMCR);
1406         if (err < 0)
1407                 return err;
1408         bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1409
1410         err = mii_read(np, np->phy_addr, MII_BMSR);
1411         if (err < 0)
1412                 return err;
1413
1414         return 0;
1415 }
1416
1417 static int mii_init_common(struct niu *np)
1418 {
1419         struct niu_link_config *lp = &np->link_config;
1420         u16 bmcr, bmsr, adv, estat;
1421         int err;
1422
1423         err = mii_reset(np);
1424         if (err)
1425                 return err;
1426
1427         err = mii_read(np, np->phy_addr, MII_BMSR);
1428         if (err < 0)
1429                 return err;
1430         bmsr = err;
1431
1432         estat = 0;
1433         if (bmsr & BMSR_ESTATEN) {
1434                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1435                 if (err < 0)
1436                         return err;
1437                 estat = err;
1438         }
1439
1440         bmcr = 0;
1441         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1442         if (err)
1443                 return err;
1444
1445         if (lp->loopback_mode == LOOPBACK_MAC) {
1446                 bmcr |= BMCR_LOOPBACK;
1447                 if (lp->active_speed == SPEED_1000)
1448                         bmcr |= BMCR_SPEED1000;
1449                 if (lp->active_duplex == DUPLEX_FULL)
1450                         bmcr |= BMCR_FULLDPLX;
1451         }
1452
1453         if (lp->loopback_mode == LOOPBACK_PHY) {
1454                 u16 aux;
1455
1456                 aux = (BCM5464R_AUX_CTL_EXT_LB |
1457                        BCM5464R_AUX_CTL_WRITE_1);
1458                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1459                 if (err)
1460                         return err;
1461         }
1462
1463         /* XXX configurable XXX */
1464         /* XXX for now don't advertise half-duplex or asym pause... XXX */
1465         adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1466         if (bmsr & BMSR_10FULL)
1467                 adv |= ADVERTISE_10FULL;
1468         if (bmsr & BMSR_100FULL)
1469                 adv |= ADVERTISE_100FULL;
1470         err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1471         if (err)
1472                 return err;
1473
1474         if (bmsr & BMSR_ESTATEN) {
1475                 u16 ctrl1000 = 0;
1476
1477                 if (estat & ESTATUS_1000_TFULL)
1478                         ctrl1000 |= ADVERTISE_1000FULL;
1479                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1480                 if (err)
1481                         return err;
1482         }
1483         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1484
1485         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1486         if (err)
1487                 return err;
1488
1489         err = mii_read(np, np->phy_addr, MII_BMCR);
1490         if (err < 0)
1491                 return err;
1492         err = mii_read(np, np->phy_addr, MII_BMSR);
1493         if (err < 0)
1494                 return err;
1495 #if 0
1496         pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1497                 np->port, bmcr, bmsr);
1498 #endif
1499
1500         return 0;
1501 }
1502
1503 static int xcvr_init_1g(struct niu *np)
1504 {
1505         u64 val;
1506
1507         /* XXX shared resource, lock parent XXX */
1508         val = nr64(MIF_CONFIG);
1509         val &= ~MIF_CONFIG_INDIRECT_MODE;
1510         nw64(MIF_CONFIG, val);
1511
1512         return mii_init_common(np);
1513 }
1514
1515 static int niu_xcvr_init(struct niu *np)
1516 {
1517         const struct niu_phy_ops *ops = np->phy_ops;
1518         int err;
1519
1520         err = 0;
1521         if (ops->xcvr_init)
1522                 err = ops->xcvr_init(np);
1523
1524         return err;
1525 }
1526
1527 static int niu_serdes_init(struct niu *np)
1528 {
1529         const struct niu_phy_ops *ops = np->phy_ops;
1530         int err;
1531
1532         err = 0;
1533         if (ops->serdes_init)
1534                 err = ops->serdes_init(np);
1535
1536         return err;
1537 }
1538
1539 static void niu_init_xif(struct niu *);
1540 static void niu_handle_led(struct niu *, int status);
1541
1542 static int niu_link_status_common(struct niu *np, int link_up)
1543 {
1544         struct niu_link_config *lp = &np->link_config;
1545         struct net_device *dev = np->dev;
1546         unsigned long flags;
1547
1548         if (!netif_carrier_ok(dev) && link_up) {
1549                 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1550                        dev->name,
1551                        (lp->active_speed == SPEED_10000 ?
1552                         "10Gb/sec" :
1553                         (lp->active_speed == SPEED_1000 ?
1554                          "1Gb/sec" :
1555                          (lp->active_speed == SPEED_100 ?
1556                           "100Mbit/sec" : "10Mbit/sec"))),
1557                        (lp->active_duplex == DUPLEX_FULL ?
1558                         "full" : "half"));
1559
1560                 spin_lock_irqsave(&np->lock, flags);
1561                 niu_init_xif(np);
1562                 niu_handle_led(np, 1);
1563                 spin_unlock_irqrestore(&np->lock, flags);
1564
1565                 netif_carrier_on(dev);
1566         } else if (netif_carrier_ok(dev) && !link_up) {
1567                 niuwarn(LINK, "%s: Link is down\n", dev->name);
1568                 spin_lock_irqsave(&np->lock, flags);
1569                 niu_handle_led(np, 0);
1570                 spin_unlock_irqrestore(&np->lock, flags);
1571                 netif_carrier_off(dev);
1572         }
1573
1574         return 0;
1575 }
1576
1577 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1578 {
1579         int err, link_up, pma_status, pcs_status;
1580
1581         link_up = 0;
1582
1583         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1584                         MRVL88X2011_10G_PMD_STATUS_2);
1585         if (err < 0)
1586                 goto out;
1587
1588         /* Check PMA/PMD Register: 1.0001.2 == 1 */
1589         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1590                         MRVL88X2011_PMA_PMD_STATUS_1);
1591         if (err < 0)
1592                 goto out;
1593
1594         pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1595
1596         /* Check PMC Register : 3.0001.2 == 1: read twice */
1597         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1598                         MRVL88X2011_PMA_PMD_STATUS_1);
1599         if (err < 0)
1600                 goto out;
1601
1602         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1603                         MRVL88X2011_PMA_PMD_STATUS_1);
1604         if (err < 0)
1605                 goto out;
1606
1607         pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1608
1609         /* Check XGXS Register : 4.0018.[0-3,12] */
1610         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1611                         MRVL88X2011_10G_XGXS_LANE_STAT);
1612         if (err < 0)
1613                 goto out;
1614
1615         if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1616                     PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1617                     PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1618                     0x800))
1619                 link_up = (pma_status && pcs_status) ? 1 : 0;
1620
1621         np->link_config.active_speed = SPEED_10000;
1622         np->link_config.active_duplex = DUPLEX_FULL;
1623         err = 0;
1624 out:
1625         mrvl88x2011_act_led(np, (link_up ?
1626                                  MRVL88X2011_LED_CTL_PCS_ACT :
1627                                  MRVL88X2011_LED_CTL_OFF));
1628
1629         *link_up_p = link_up;
1630         return err;
1631 }
1632
1633 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1634 {
1635         int err, link_up;
1636         link_up = 0;
1637
1638         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1639                         BCM8704_PMD_RCV_SIGDET);
1640         if (err < 0)
1641                 goto out;
1642         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1643                 err = 0;
1644                 goto out;
1645         }
1646
1647         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1648                         BCM8704_PCS_10G_R_STATUS);
1649         if (err < 0)
1650                 goto out;
1651
1652         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1653                 err = 0;
1654                 goto out;
1655         }
1656
1657         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1658                         BCM8704_PHYXS_XGXS_LANE_STAT);
1659         if (err < 0)
1660                 goto out;
1661         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1662                     PHYXS_XGXS_LANE_STAT_MAGIC |
1663                     PHYXS_XGXS_LANE_STAT_PATTEST |
1664                     PHYXS_XGXS_LANE_STAT_LANE3 |
1665                     PHYXS_XGXS_LANE_STAT_LANE2 |
1666                     PHYXS_XGXS_LANE_STAT_LANE1 |
1667                     PHYXS_XGXS_LANE_STAT_LANE0)) {
1668                 err = 0;
1669                 np->link_config.active_speed = SPEED_INVALID;
1670                 np->link_config.active_duplex = DUPLEX_INVALID;
1671                 goto out;
1672         }
1673
1674         link_up = 1;
1675         np->link_config.active_speed = SPEED_10000;
1676         np->link_config.active_duplex = DUPLEX_FULL;
1677         err = 0;
1678
1679 out:
1680         *link_up_p = link_up;
1681         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
1682                 err = 0;
1683         return err;
1684 }
1685
1686 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
1687 {
1688         int err, link_up;
1689
1690         link_up = 0;
1691
1692         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1693                         BCM8704_PMD_RCV_SIGDET);
1694         if (err < 0)
1695                 goto out;
1696         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1697                 err = 0;
1698                 goto out;
1699         }
1700
1701         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1702                         BCM8704_PCS_10G_R_STATUS);
1703         if (err < 0)
1704                 goto out;
1705         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1706                 err = 0;
1707                 goto out;
1708         }
1709
1710         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1711                         BCM8704_PHYXS_XGXS_LANE_STAT);
1712         if (err < 0)
1713                 goto out;
1714
1715         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1716                     PHYXS_XGXS_LANE_STAT_MAGIC |
1717                     PHYXS_XGXS_LANE_STAT_LANE3 |
1718                     PHYXS_XGXS_LANE_STAT_LANE2 |
1719                     PHYXS_XGXS_LANE_STAT_LANE1 |
1720                     PHYXS_XGXS_LANE_STAT_LANE0)) {
1721                 err = 0;
1722                 goto out;
1723         }
1724
1725         link_up = 1;
1726         np->link_config.active_speed = SPEED_10000;
1727         np->link_config.active_duplex = DUPLEX_FULL;
1728         err = 0;
1729
1730 out:
1731         *link_up_p = link_up;
1732         return err;
1733 }
1734
1735 static int link_status_10g(struct niu *np, int *link_up_p)
1736 {
1737         unsigned long flags;
1738         int err = -EINVAL;
1739
1740         spin_lock_irqsave(&np->lock, flags);
1741
1742         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
1743                 int phy_id;
1744
1745                 phy_id = phy_decode(np->parent->port_phy, np->port);
1746                 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1747
1748                 /* handle different phy types */
1749                 switch (phy_id & NIU_PHY_ID_MASK) {
1750                 case NIU_PHY_ID_MRVL88X2011:
1751                         err = link_status_10g_mrvl(np, link_up_p);
1752                         break;
1753
1754                 default: /* bcom 8704 */
1755                         err = link_status_10g_bcom(np, link_up_p);
1756                         break;
1757                 }
1758         }
1759
1760         spin_unlock_irqrestore(&np->lock, flags);
1761
1762         return err;
1763 }
1764
1765 static int niu_10g_phy_present(struct niu *np)
1766 {
1767         u64 sig, mask, val;
1768
1769         sig = nr64(ESR_INT_SIGNALS);
1770         switch (np->port) {
1771         case 0:
1772                 mask = ESR_INT_SIGNALS_P0_BITS;
1773                 val = (ESR_INT_SRDY0_P0 |
1774                        ESR_INT_DET0_P0 |
1775                        ESR_INT_XSRDY_P0 |
1776                        ESR_INT_XDP_P0_CH3 |
1777                        ESR_INT_XDP_P0_CH2 |
1778                        ESR_INT_XDP_P0_CH1 |
1779                        ESR_INT_XDP_P0_CH0);
1780                 break;
1781
1782         case 1:
1783                 mask = ESR_INT_SIGNALS_P1_BITS;
1784                 val = (ESR_INT_SRDY0_P1 |
1785                        ESR_INT_DET0_P1 |
1786                        ESR_INT_XSRDY_P1 |
1787                        ESR_INT_XDP_P1_CH3 |
1788                        ESR_INT_XDP_P1_CH2 |
1789                        ESR_INT_XDP_P1_CH1 |
1790                        ESR_INT_XDP_P1_CH0);
1791                 break;
1792
1793         default:
1794                 return 0;
1795         }
1796
1797         if ((sig & mask) != val)
1798                 return 0;
1799         return 1;
1800 }
1801
1802 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
1803 {
1804         unsigned long flags;
1805         int err = 0;
1806         int phy_present;
1807         int phy_present_prev;
1808
1809         spin_lock_irqsave(&np->lock, flags);
1810
1811         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
1812                 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
1813                         1 : 0;
1814                 phy_present = niu_10g_phy_present(np);
1815                 if (phy_present != phy_present_prev) {
1816                         /* state change */
1817                         if (phy_present) {
1818                                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
1819                                 if (np->phy_ops->xcvr_init)
1820                                         err = np->phy_ops->xcvr_init(np);
1821                                 if (err) {
1822                                         /* debounce */
1823                                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
1824                                 }
1825                         } else {
1826                                 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
1827                                 *link_up_p = 0;
1828                                 niuwarn(LINK, "%s: Hotplug PHY Removed\n",
1829                                         np->dev->name);
1830                         }
1831                 }
1832                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT)
1833                         err = link_status_10g_bcm8706(np, link_up_p);
1834         }
1835
1836         spin_unlock_irqrestore(&np->lock, flags);
1837
1838         return err;
1839 }
1840
1841 static int link_status_1g(struct niu *np, int *link_up_p)
1842 {
1843         struct niu_link_config *lp = &np->link_config;
1844         u16 current_speed, bmsr;
1845         unsigned long flags;
1846         u8 current_duplex;
1847         int err, link_up;
1848
1849         link_up = 0;
1850         current_speed = SPEED_INVALID;
1851         current_duplex = DUPLEX_INVALID;
1852
1853         spin_lock_irqsave(&np->lock, flags);
1854
1855         err = -EINVAL;
1856         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1857                 goto out;
1858
1859         err = mii_read(np, np->phy_addr, MII_BMSR);
1860         if (err < 0)
1861                 goto out;
1862
1863         bmsr = err;
1864         if (bmsr & BMSR_LSTATUS) {
1865                 u16 adv, lpa, common, estat;
1866
1867                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1868                 if (err < 0)
1869                         goto out;
1870                 adv = err;
1871
1872                 err = mii_read(np, np->phy_addr, MII_LPA);
1873                 if (err < 0)
1874                         goto out;
1875                 lpa = err;
1876
1877                 common = adv & lpa;
1878
1879                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1880                 if (err < 0)
1881                         goto out;
1882                 estat = err;
1883
1884                 link_up = 1;
1885                 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
1886                         current_speed = SPEED_1000;
1887                         if (estat & ESTATUS_1000_TFULL)
1888                                 current_duplex = DUPLEX_FULL;
1889                         else
1890                                 current_duplex = DUPLEX_HALF;
1891                 } else {
1892                         if (common & ADVERTISE_100BASE4) {
1893                                 current_speed = SPEED_100;
1894                                 current_duplex = DUPLEX_HALF;
1895                         } else if (common & ADVERTISE_100FULL) {
1896                                 current_speed = SPEED_100;
1897                                 current_duplex = DUPLEX_FULL;
1898                         } else if (common & ADVERTISE_100HALF) {
1899                                 current_speed = SPEED_100;
1900                                 current_duplex = DUPLEX_HALF;
1901                         } else if (common & ADVERTISE_10FULL) {
1902                                 current_speed = SPEED_10;
1903                                 current_duplex = DUPLEX_FULL;
1904                         } else if (common & ADVERTISE_10HALF) {
1905                                 current_speed = SPEED_10;
1906                                 current_duplex = DUPLEX_HALF;
1907                         } else
1908                                 link_up = 0;
1909                 }
1910         }
1911         lp->active_speed = current_speed;
1912         lp->active_duplex = current_duplex;
1913         err = 0;
1914
1915 out:
1916         spin_unlock_irqrestore(&np->lock, flags);
1917
1918         *link_up_p = link_up;
1919         return err;
1920 }
1921
1922 static int niu_link_status(struct niu *np, int *link_up_p)
1923 {
1924         const struct niu_phy_ops *ops = np->phy_ops;
1925         int err;
1926
1927         err = 0;
1928         if (ops->link_status)
1929                 err = ops->link_status(np, link_up_p);
1930
1931         return err;
1932 }
1933
1934 static void niu_timer(unsigned long __opaque)
1935 {
1936         struct niu *np = (struct niu *) __opaque;
1937         unsigned long off;
1938         int err, link_up;
1939
1940         err = niu_link_status(np, &link_up);
1941         if (!err)
1942                 niu_link_status_common(np, link_up);
1943
1944         if (netif_carrier_ok(np->dev))
1945                 off = 5 * HZ;
1946         else
1947                 off = 1 * HZ;
1948         np->timer.expires = jiffies + off;
1949
1950         add_timer(&np->timer);
1951 }
1952
1953 static const struct niu_phy_ops phy_ops_10g_serdes = {
1954         .serdes_init            = serdes_init_10g_serdes,
1955         .link_status            = link_status_10g_serdes,
1956 };
1957
1958 static const struct niu_phy_ops phy_ops_1g_rgmii = {
1959         .xcvr_init              = xcvr_init_1g_rgmii,
1960         .link_status            = link_status_1g_rgmii,
1961 };
1962
1963 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
1964         .serdes_init            = serdes_init_niu,
1965         .xcvr_init              = xcvr_init_10g,
1966         .link_status            = link_status_10g,
1967 };
1968
1969 static const struct niu_phy_ops phy_ops_10g_fiber = {
1970         .serdes_init            = serdes_init_10g,
1971         .xcvr_init              = xcvr_init_10g,
1972         .link_status            = link_status_10g,
1973 };
1974
1975 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
1976         .serdes_init            = serdes_init_10g,
1977         .xcvr_init              = xcvr_init_10g_bcm8706,
1978         .link_status            = link_status_10g_hotplug,
1979 };
1980
1981 static const struct niu_phy_ops phy_ops_10g_copper = {
1982         .serdes_init            = serdes_init_10g,
1983         .link_status            = link_status_10g, /* XXX */
1984 };
1985
1986 static const struct niu_phy_ops phy_ops_1g_fiber = {
1987         .serdes_init            = serdes_init_1g,
1988         .xcvr_init              = xcvr_init_1g,
1989         .link_status            = link_status_1g,
1990 };
1991
1992 static const struct niu_phy_ops phy_ops_1g_copper = {
1993         .xcvr_init              = xcvr_init_1g,
1994         .link_status            = link_status_1g,
1995 };
1996
1997 struct niu_phy_template {
1998         const struct niu_phy_ops        *ops;
1999         u32                             phy_addr_base;
2000 };
2001
2002 static const struct niu_phy_template phy_template_niu = {
2003         .ops            = &phy_ops_10g_fiber_niu,
2004         .phy_addr_base  = 16,
2005 };
2006
2007 static const struct niu_phy_template phy_template_10g_fiber = {
2008         .ops            = &phy_ops_10g_fiber,
2009         .phy_addr_base  = 8,
2010 };
2011
2012 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2013         .ops            = &phy_ops_10g_fiber_hotplug,
2014         .phy_addr_base  = 8,
2015 };
2016
2017 static const struct niu_phy_template phy_template_10g_copper = {
2018         .ops            = &phy_ops_10g_copper,
2019         .phy_addr_base  = 10,
2020 };
2021
2022 static const struct niu_phy_template phy_template_1g_fiber = {
2023         .ops            = &phy_ops_1g_fiber,
2024         .phy_addr_base  = 0,
2025 };
2026
2027 static const struct niu_phy_template phy_template_1g_copper = {
2028         .ops            = &phy_ops_1g_copper,
2029         .phy_addr_base  = 0,
2030 };
2031
2032 static const struct niu_phy_template phy_template_1g_rgmii = {
2033         .ops            = &phy_ops_1g_rgmii,
2034         .phy_addr_base  = 0,
2035 };
2036
2037 static const struct niu_phy_template phy_template_10g_serdes = {
2038         .ops            = &phy_ops_10g_serdes,
2039         .phy_addr_base  = 0,
2040 };
2041
2042 static int niu_atca_port_num[4] = {
2043         0, 0,  11, 10
2044 };
2045
2046 static int serdes_init_10g_serdes(struct niu *np)
2047 {
2048         struct niu_link_config *lp = &np->link_config;
2049         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2050         u64 ctrl_val, test_cfg_val, sig, mask, val;
2051         int err;
2052         u64 reset_val;
2053
2054         switch (np->port) {
2055         case 0:
2056                 reset_val =  ENET_SERDES_RESET_0;
2057                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2058                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2059                 pll_cfg = ENET_SERDES_0_PLL_CFG;
2060                 break;
2061         case 1:
2062                 reset_val =  ENET_SERDES_RESET_1;
2063                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2064                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2065                 pll_cfg = ENET_SERDES_1_PLL_CFG;
2066                 break;
2067
2068         default:
2069                 return -EINVAL;
2070         }
2071         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2072                     ENET_SERDES_CTRL_SDET_1 |
2073                     ENET_SERDES_CTRL_SDET_2 |
2074                     ENET_SERDES_CTRL_SDET_3 |
2075                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2076                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2077                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2078                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2079                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2080                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2081                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2082                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2083         test_cfg_val = 0;
2084
2085         if (lp->loopback_mode == LOOPBACK_PHY) {
2086                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2087                                   ENET_SERDES_TEST_MD_0_SHIFT) |
2088                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2089                                   ENET_SERDES_TEST_MD_1_SHIFT) |
2090                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2091                                   ENET_SERDES_TEST_MD_2_SHIFT) |
2092                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2093                                   ENET_SERDES_TEST_MD_3_SHIFT));
2094         }
2095
2096         esr_reset(np);
2097         nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2098         nw64(ctrl_reg, ctrl_val);
2099         nw64(test_cfg_reg, test_cfg_val);
2100
2101         /* Initialize all 4 lanes of the SERDES.  */
2102         for (i = 0; i < 4; i++) {
2103                 u32 rxtx_ctrl, glue0;
2104
2105                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2106                 if (err)
2107                         return err;
2108                 err = esr_read_glue0(np, i, &glue0);
2109                 if (err)
2110                         return err;
2111
2112                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2113                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2114                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2115
2116                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2117                            ESR_GLUE_CTRL0_THCNT |
2118                            ESR_GLUE_CTRL0_BLTIME);
2119                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2120                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2121                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2122                           (BLTIME_300_CYCLES <<
2123                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
2124
2125                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2126                 if (err)
2127                         return err;
2128                 err = esr_write_glue0(np, i, glue0);
2129                 if (err)
2130                         return err;
2131         }
2132
2133
2134         sig = nr64(ESR_INT_SIGNALS);
2135         switch (np->port) {
2136         case 0:
2137                 mask = ESR_INT_SIGNALS_P0_BITS;
2138                 val = (ESR_INT_SRDY0_P0 |
2139                        ESR_INT_DET0_P0 |
2140                        ESR_INT_XSRDY_P0 |
2141                        ESR_INT_XDP_P0_CH3 |
2142                        ESR_INT_XDP_P0_CH2 |
2143                        ESR_INT_XDP_P0_CH1 |
2144                        ESR_INT_XDP_P0_CH0);
2145                 break;
2146
2147         case 1:
2148                 mask = ESR_INT_SIGNALS_P1_BITS;
2149                 val = (ESR_INT_SRDY0_P1 |
2150                        ESR_INT_DET0_P1 |
2151                        ESR_INT_XSRDY_P1 |
2152                        ESR_INT_XDP_P1_CH3 |
2153                        ESR_INT_XDP_P1_CH2 |
2154                        ESR_INT_XDP_P1_CH1 |
2155                        ESR_INT_XDP_P1_CH0);
2156                 break;
2157
2158         default:
2159                 return -EINVAL;
2160         }
2161
2162         if ((sig & mask) != val) {
2163                 int err;
2164                 err = serdes_init_1g_serdes(np);
2165                 if (!err) {
2166                         np->flags &= ~NIU_FLAGS_10G;
2167                         np->mac_xcvr = MAC_XCVR_PCS;
2168                 }  else {
2169                         dev_err(np->device, PFX "Port %u 10G/1G SERDES Link Failed \n",
2170                          np->port);
2171                         return -ENODEV;
2172                 }
2173         }
2174
2175         return 0;
2176 }
2177
2178 static int niu_determine_phy_disposition(struct niu *np)
2179 {
2180         struct niu_parent *parent = np->parent;
2181         u8 plat_type = parent->plat_type;
2182         const struct niu_phy_template *tp;
2183         u32 phy_addr_off = 0;
2184
2185         if (plat_type == PLAT_TYPE_NIU) {
2186                 tp = &phy_template_niu;
2187                 phy_addr_off += np->port;
2188         } else {
2189                 switch (np->flags &
2190                         (NIU_FLAGS_10G |
2191                          NIU_FLAGS_FIBER |
2192                          NIU_FLAGS_XCVR_SERDES)) {
2193                 case 0:
2194                         /* 1G copper */
2195                         tp = &phy_template_1g_copper;
2196                         if (plat_type == PLAT_TYPE_VF_P0)
2197                                 phy_addr_off = 10;
2198                         else if (plat_type == PLAT_TYPE_VF_P1)
2199                                 phy_addr_off = 26;
2200
2201                         phy_addr_off += (np->port ^ 0x3);
2202                         break;
2203
2204                 case NIU_FLAGS_10G:
2205                         /* 10G copper */
2206                         tp = &phy_template_1g_copper;
2207                         break;
2208
2209                 case NIU_FLAGS_FIBER:
2210                         /* 1G fiber */
2211                         tp = &phy_template_1g_fiber;
2212                         break;
2213
2214                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2215                         /* 10G fiber */
2216                         tp = &phy_template_10g_fiber;
2217                         if (plat_type == PLAT_TYPE_VF_P0 ||
2218                             plat_type == PLAT_TYPE_VF_P1)
2219                                 phy_addr_off = 8;
2220                         phy_addr_off += np->port;
2221                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2222                                 tp = &phy_template_10g_fiber_hotplug;
2223                                 if (np->port == 0)
2224                                         phy_addr_off = 8;
2225                                 if (np->port == 1)
2226                                         phy_addr_off = 12;
2227                         }
2228                         break;
2229
2230                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2231                 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2232                 case NIU_FLAGS_XCVR_SERDES:
2233                         switch(np->port) {
2234                         case 0:
2235                         case 1:
2236                                 tp = &phy_template_10g_serdes;
2237                                 break;
2238                         case 2:
2239                         case 3:
2240                                 tp = &phy_template_1g_rgmii;
2241                                 break;
2242                         default:
2243                                 return -EINVAL;
2244                                 break;
2245                         }
2246                         phy_addr_off = niu_atca_port_num[np->port];
2247                         break;
2248
2249                 default:
2250                         return -EINVAL;
2251                 }
2252         }
2253
2254         np->phy_ops = tp->ops;
2255         np->phy_addr = tp->phy_addr_base + phy_addr_off;
2256
2257         return 0;
2258 }
2259
2260 static int niu_init_link(struct niu *np)
2261 {
2262         struct niu_parent *parent = np->parent;
2263         int err, ignore;
2264
2265         if (parent->plat_type == PLAT_TYPE_NIU) {
2266                 err = niu_xcvr_init(np);
2267                 if (err)
2268                         return err;
2269                 msleep(200);
2270         }
2271         err = niu_serdes_init(np);
2272         if (err)
2273                 return err;
2274         msleep(200);
2275         err = niu_xcvr_init(np);
2276         if (!err)
2277                 niu_link_status(np, &ignore);
2278         return 0;
2279 }
2280
2281 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2282 {
2283         u16 reg0 = addr[4] << 8 | addr[5];
2284         u16 reg1 = addr[2] << 8 | addr[3];
2285         u16 reg2 = addr[0] << 8 | addr[1];
2286
2287         if (np->flags & NIU_FLAGS_XMAC) {
2288                 nw64_mac(XMAC_ADDR0, reg0);
2289                 nw64_mac(XMAC_ADDR1, reg1);
2290                 nw64_mac(XMAC_ADDR2, reg2);
2291         } else {
2292                 nw64_mac(BMAC_ADDR0, reg0);
2293                 nw64_mac(BMAC_ADDR1, reg1);
2294                 nw64_mac(BMAC_ADDR2, reg2);
2295         }
2296 }
2297
2298 static int niu_num_alt_addr(struct niu *np)
2299 {
2300         if (np->flags & NIU_FLAGS_XMAC)
2301                 return XMAC_NUM_ALT_ADDR;
2302         else
2303                 return BMAC_NUM_ALT_ADDR;
2304 }
2305
2306 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2307 {
2308         u16 reg0 = addr[4] << 8 | addr[5];
2309         u16 reg1 = addr[2] << 8 | addr[3];
2310         u16 reg2 = addr[0] << 8 | addr[1];
2311
2312         if (index >= niu_num_alt_addr(np))
2313                 return -EINVAL;
2314
2315         if (np->flags & NIU_FLAGS_XMAC) {
2316                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2317                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2318                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2319         } else {
2320                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2321                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2322                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2323         }
2324
2325         return 0;
2326 }
2327
2328 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2329 {
2330         unsigned long reg;
2331         u64 val, mask;
2332
2333         if (index >= niu_num_alt_addr(np))
2334                 return -EINVAL;
2335
2336         if (np->flags & NIU_FLAGS_XMAC) {
2337                 reg = XMAC_ADDR_CMPEN;
2338                 mask = 1 << index;
2339         } else {
2340                 reg = BMAC_ADDR_CMPEN;
2341                 mask = 1 << (index + 1);
2342         }
2343
2344         val = nr64_mac(reg);
2345         if (on)
2346                 val |= mask;
2347         else
2348                 val &= ~mask;
2349         nw64_mac(reg, val);
2350
2351         return 0;
2352 }
2353
2354 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2355                                    int num, int mac_pref)
2356 {
2357         u64 val = nr64_mac(reg);
2358         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2359         val |= num;
2360         if (mac_pref)
2361                 val |= HOST_INFO_MPR;
2362         nw64_mac(reg, val);
2363 }
2364
2365 static int __set_rdc_table_num(struct niu *np,
2366                                int xmac_index, int bmac_index,
2367                                int rdc_table_num, int mac_pref)
2368 {
2369         unsigned long reg;
2370
2371         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2372                 return -EINVAL;
2373         if (np->flags & NIU_FLAGS_XMAC)
2374                 reg = XMAC_HOST_INFO(xmac_index);
2375         else
2376                 reg = BMAC_HOST_INFO(bmac_index);
2377         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2378         return 0;
2379 }
2380
2381 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2382                                          int mac_pref)
2383 {
2384         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2385 }
2386
2387 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2388                                            int mac_pref)
2389 {
2390         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2391 }
2392
2393 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2394                                      int table_num, int mac_pref)
2395 {
2396         if (idx >= niu_num_alt_addr(np))
2397                 return -EINVAL;
2398         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2399 }
2400
2401 static u64 vlan_entry_set_parity(u64 reg_val)
2402 {
2403         u64 port01_mask;
2404         u64 port23_mask;
2405
2406         port01_mask = 0x00ff;
2407         port23_mask = 0xff00;
2408
2409         if (hweight64(reg_val & port01_mask) & 1)
2410                 reg_val |= ENET_VLAN_TBL_PARITY0;
2411         else
2412                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2413
2414         if (hweight64(reg_val & port23_mask) & 1)
2415                 reg_val |= ENET_VLAN_TBL_PARITY1;
2416         else
2417                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2418
2419         return reg_val;
2420 }
2421
2422 static void vlan_tbl_write(struct niu *np, unsigned long index,
2423                            int port, int vpr, int rdc_table)
2424 {
2425         u64 reg_val = nr64(ENET_VLAN_TBL(index));
2426
2427         reg_val &= ~((ENET_VLAN_TBL_VPR |
2428                       ENET_VLAN_TBL_VLANRDCTBLN) <<
2429                      ENET_VLAN_TBL_SHIFT(port));
2430         if (vpr)
2431                 reg_val |= (ENET_VLAN_TBL_VPR <<
2432                             ENET_VLAN_TBL_SHIFT(port));
2433         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2434
2435         reg_val = vlan_entry_set_parity(reg_val);
2436
2437         nw64(ENET_VLAN_TBL(index), reg_val);
2438 }
2439
2440 static void vlan_tbl_clear(struct niu *np)
2441 {
2442         int i;
2443
2444         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2445                 nw64(ENET_VLAN_TBL(i), 0);
2446 }
2447
2448 static int tcam_wait_bit(struct niu *np, u64 bit)
2449 {
2450         int limit = 1000;
2451
2452         while (--limit > 0) {
2453                 if (nr64(TCAM_CTL) & bit)
2454                         break;
2455                 udelay(1);
2456         }
2457         if (limit < 0)
2458                 return -ENODEV;
2459
2460         return 0;
2461 }
2462
2463 static int tcam_flush(struct niu *np, int index)
2464 {
2465         nw64(TCAM_KEY_0, 0x00);
2466         nw64(TCAM_KEY_MASK_0, 0xff);
2467         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2468
2469         return tcam_wait_bit(np, TCAM_CTL_STAT);
2470 }
2471
2472 #if 0
2473 static int tcam_read(struct niu *np, int index,
2474                      u64 *key, u64 *mask)
2475 {
2476         int err;
2477
2478         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2479         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2480         if (!err) {
2481                 key[0] = nr64(TCAM_KEY_0);
2482                 key[1] = nr64(TCAM_KEY_1);
2483                 key[2] = nr64(TCAM_KEY_2);
2484                 key[3] = nr64(TCAM_KEY_3);
2485                 mask[0] = nr64(TCAM_KEY_MASK_0);
2486                 mask[1] = nr64(TCAM_KEY_MASK_1);
2487                 mask[2] = nr64(TCAM_KEY_MASK_2);
2488                 mask[3] = nr64(TCAM_KEY_MASK_3);
2489         }
2490         return err;
2491 }
2492 #endif
2493
2494 static int tcam_write(struct niu *np, int index,
2495                       u64 *key, u64 *mask)
2496 {
2497         nw64(TCAM_KEY_0, key[0]);
2498         nw64(TCAM_KEY_1, key[1]);
2499         nw64(TCAM_KEY_2, key[2]);
2500         nw64(TCAM_KEY_3, key[3]);
2501         nw64(TCAM_KEY_MASK_0, mask[0]);
2502         nw64(TCAM_KEY_MASK_1, mask[1]);
2503         nw64(TCAM_KEY_MASK_2, mask[2]);
2504         nw64(TCAM_KEY_MASK_3, mask[3]);
2505         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2506
2507         return tcam_wait_bit(np, TCAM_CTL_STAT);
2508 }
2509
2510 #if 0
2511 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2512 {
2513         int err;
2514
2515         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2516         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2517         if (!err)
2518                 *data = nr64(TCAM_KEY_1);
2519
2520         return err;
2521 }
2522 #endif
2523
2524 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2525 {
2526         nw64(TCAM_KEY_1, assoc_data);
2527         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2528
2529         return tcam_wait_bit(np, TCAM_CTL_STAT);
2530 }
2531
2532 static void tcam_enable(struct niu *np, int on)
2533 {
2534         u64 val = nr64(FFLP_CFG_1);
2535
2536         if (on)
2537                 val &= ~FFLP_CFG_1_TCAM_DIS;
2538         else
2539                 val |= FFLP_CFG_1_TCAM_DIS;
2540         nw64(FFLP_CFG_1, val);
2541 }
2542
2543 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2544 {
2545         u64 val = nr64(FFLP_CFG_1);
2546
2547         val &= ~(FFLP_CFG_1_FFLPINITDONE |
2548                  FFLP_CFG_1_CAMLAT |
2549                  FFLP_CFG_1_CAMRATIO);
2550         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2551         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2552         nw64(FFLP_CFG_1, val);
2553
2554         val = nr64(FFLP_CFG_1);
2555         val |= FFLP_CFG_1_FFLPINITDONE;
2556         nw64(FFLP_CFG_1, val);
2557 }
2558
2559 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2560                                       int on)
2561 {
2562         unsigned long reg;
2563         u64 val;
2564
2565         if (class < CLASS_CODE_ETHERTYPE1 ||
2566             class > CLASS_CODE_ETHERTYPE2)
2567                 return -EINVAL;
2568
2569         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2570         val = nr64(reg);
2571         if (on)
2572                 val |= L2_CLS_VLD;
2573         else
2574                 val &= ~L2_CLS_VLD;
2575         nw64(reg, val);
2576
2577         return 0;
2578 }
2579
2580 #if 0
2581 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2582                                    u64 ether_type)
2583 {
2584         unsigned long reg;
2585         u64 val;
2586
2587         if (class < CLASS_CODE_ETHERTYPE1 ||
2588             class > CLASS_CODE_ETHERTYPE2 ||
2589             (ether_type & ~(u64)0xffff) != 0)
2590                 return -EINVAL;
2591
2592         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2593         val = nr64(reg);
2594         val &= ~L2_CLS_ETYPE;
2595         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2596         nw64(reg, val);
2597
2598         return 0;
2599 }
2600 #endif
2601
2602 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2603                                      int on)
2604 {
2605         unsigned long reg;
2606         u64 val;
2607
2608         if (class < CLASS_CODE_USER_PROG1 ||
2609             class > CLASS_CODE_USER_PROG4)
2610                 return -EINVAL;
2611
2612         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2613         val = nr64(reg);
2614         if (on)
2615                 val |= L3_CLS_VALID;
2616         else
2617                 val &= ~L3_CLS_VALID;
2618         nw64(reg, val);
2619
2620         return 0;
2621 }
2622
2623 #if 0
2624 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2625                                   int ipv6, u64 protocol_id,
2626                                   u64 tos_mask, u64 tos_val)
2627 {
2628         unsigned long reg;
2629         u64 val;
2630
2631         if (class < CLASS_CODE_USER_PROG1 ||
2632             class > CLASS_CODE_USER_PROG4 ||
2633             (protocol_id & ~(u64)0xff) != 0 ||
2634             (tos_mask & ~(u64)0xff) != 0 ||
2635             (tos_val & ~(u64)0xff) != 0)
2636                 return -EINVAL;
2637
2638         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2639         val = nr64(reg);
2640         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2641                  L3_CLS_TOSMASK | L3_CLS_TOS);
2642         if (ipv6)
2643                 val |= L3_CLS_IPVER;
2644         val |= (protocol_id << L3_CLS_PID_SHIFT);
2645         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2646         val |= (tos_val << L3_CLS_TOS_SHIFT);
2647         nw64(reg, val);
2648
2649         return 0;
2650 }
2651 #endif
2652
2653 static int tcam_early_init(struct niu *np)
2654 {
2655         unsigned long i;
2656         int err;
2657
2658         tcam_enable(np, 0);
2659         tcam_set_lat_and_ratio(np,
2660                                DEFAULT_TCAM_LATENCY,
2661                                DEFAULT_TCAM_ACCESS_RATIO);
2662         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
2663                 err = tcam_user_eth_class_enable(np, i, 0);
2664                 if (err)
2665                         return err;
2666         }
2667         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
2668                 err = tcam_user_ip_class_enable(np, i, 0);
2669                 if (err)
2670                         return err;
2671         }
2672
2673         return 0;
2674 }
2675
2676 static int tcam_flush_all(struct niu *np)
2677 {
2678         unsigned long i;
2679
2680         for (i = 0; i < np->parent->tcam_num_entries; i++) {
2681                 int err = tcam_flush(np, i);
2682                 if (err)
2683                         return err;
2684         }
2685         return 0;
2686 }
2687
2688 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
2689 {
2690         return ((u64)index | (num_entries == 1 ?
2691                               HASH_TBL_ADDR_AUTOINC : 0));
2692 }
2693
2694 #if 0
2695 static int hash_read(struct niu *np, unsigned long partition,
2696                      unsigned long index, unsigned long num_entries,
2697                      u64 *data)
2698 {
2699         u64 val = hash_addr_regval(index, num_entries);
2700         unsigned long i;
2701
2702         if (partition >= FCRAM_NUM_PARTITIONS ||
2703             index + num_entries > FCRAM_SIZE)
2704                 return -EINVAL;
2705
2706         nw64(HASH_TBL_ADDR(partition), val);
2707         for (i = 0; i < num_entries; i++)
2708                 data[i] = nr64(HASH_TBL_DATA(partition));
2709
2710         return 0;
2711 }
2712 #endif
2713
2714 static int hash_write(struct niu *np, unsigned long partition,
2715                       unsigned long index, unsigned long num_entries,
2716                       u64 *data)
2717 {
2718         u64 val = hash_addr_regval(index, num_entries);
2719         unsigned long i;
2720
2721         if (partition >= FCRAM_NUM_PARTITIONS ||
2722             index + (num_entries * 8) > FCRAM_SIZE)
2723                 return -EINVAL;
2724
2725         nw64(HASH_TBL_ADDR(partition), val);
2726         for (i = 0; i < num_entries; i++)
2727                 nw64(HASH_TBL_DATA(partition), data[i]);
2728
2729         return 0;
2730 }
2731
2732 static void fflp_reset(struct niu *np)
2733 {
2734         u64 val;
2735
2736         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
2737         udelay(10);
2738         nw64(FFLP_CFG_1, 0);
2739
2740         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
2741         nw64(FFLP_CFG_1, val);
2742 }
2743
2744 static void fflp_set_timings(struct niu *np)
2745 {
2746         u64 val = nr64(FFLP_CFG_1);
2747
2748         val &= ~FFLP_CFG_1_FFLPINITDONE;
2749         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
2750         nw64(FFLP_CFG_1, val);
2751
2752         val = nr64(FFLP_CFG_1);
2753         val |= FFLP_CFG_1_FFLPINITDONE;
2754         nw64(FFLP_CFG_1, val);
2755
2756         val = nr64(FCRAM_REF_TMR);
2757         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
2758         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
2759         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
2760         nw64(FCRAM_REF_TMR, val);
2761 }
2762
2763 static int fflp_set_partition(struct niu *np, u64 partition,
2764                               u64 mask, u64 base, int enable)
2765 {
2766         unsigned long reg;
2767         u64 val;
2768
2769         if (partition >= FCRAM_NUM_PARTITIONS ||
2770             (mask & ~(u64)0x1f) != 0 ||
2771             (base & ~(u64)0x1f) != 0)
2772                 return -EINVAL;
2773
2774         reg = FLW_PRT_SEL(partition);
2775
2776         val = nr64(reg);
2777         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
2778         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
2779         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
2780         if (enable)
2781                 val |= FLW_PRT_SEL_EXT;
2782         nw64(reg, val);
2783
2784         return 0;
2785 }
2786
2787 static int fflp_disable_all_partitions(struct niu *np)
2788 {
2789         unsigned long i;
2790
2791         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
2792                 int err = fflp_set_partition(np, 0, 0, 0, 0);
2793                 if (err)
2794                         return err;
2795         }
2796         return 0;
2797 }
2798
2799 static void fflp_llcsnap_enable(struct niu *np, int on)
2800 {
2801         u64 val = nr64(FFLP_CFG_1);
2802
2803         if (on)
2804                 val |= FFLP_CFG_1_LLCSNAP;
2805         else
2806                 val &= ~FFLP_CFG_1_LLCSNAP;
2807         nw64(FFLP_CFG_1, val);
2808 }
2809
2810 static void fflp_errors_enable(struct niu *np, int on)
2811 {
2812         u64 val = nr64(FFLP_CFG_1);
2813
2814         if (on)
2815                 val &= ~FFLP_CFG_1_ERRORDIS;
2816         else
2817                 val |= FFLP_CFG_1_ERRORDIS;
2818         nw64(FFLP_CFG_1, val);
2819 }
2820
2821 static int fflp_hash_clear(struct niu *np)
2822 {
2823         struct fcram_hash_ipv4 ent;
2824         unsigned long i;
2825
2826         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
2827         memset(&ent, 0, sizeof(ent));
2828         ent.header = HASH_HEADER_EXT;
2829
2830         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
2831                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
2832                 if (err)
2833                         return err;
2834         }
2835         return 0;
2836 }
2837
2838 static int fflp_early_init(struct niu *np)
2839 {
2840         struct niu_parent *parent;
2841         unsigned long flags;
2842         int err;
2843
2844         niu_lock_parent(np, flags);
2845
2846         parent = np->parent;
2847         err = 0;
2848         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
2849                 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
2850                        np->port);
2851                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
2852                         fflp_reset(np);
2853                         fflp_set_timings(np);
2854                         err = fflp_disable_all_partitions(np);
2855                         if (err) {
2856                                 niudbg(PROBE, "fflp_disable_all_partitions "
2857                                        "failed, err=%d\n", err);
2858                                 goto out;
2859                         }
2860                 }
2861
2862                 err = tcam_early_init(np);
2863                 if (err) {
2864                         niudbg(PROBE, "tcam_early_init failed, err=%d\n",
2865                                err);
2866                         goto out;
2867                 }
2868                 fflp_llcsnap_enable(np, 1);
2869                 fflp_errors_enable(np, 0);
2870                 nw64(H1POLY, 0);
2871                 nw64(H2POLY, 0);
2872
2873                 err = tcam_flush_all(np);
2874                 if (err) {
2875                         niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
2876                                err);
2877                         goto out;
2878                 }
2879                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
2880                         err = fflp_hash_clear(np);
2881                         if (err) {
2882                                 niudbg(PROBE, "fflp_hash_clear failed, "
2883                                        "err=%d\n", err);
2884                                 goto out;
2885                         }
2886                 }
2887
2888                 vlan_tbl_clear(np);
2889
2890                 niudbg(PROBE, "fflp_early_init: Success\n");
2891                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
2892         }
2893 out:
2894         niu_unlock_parent(np, flags);
2895         return err;
2896 }
2897
2898 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
2899 {
2900         if (class_code < CLASS_CODE_USER_PROG1 ||
2901             class_code > CLASS_CODE_SCTP_IPV6)
2902                 return -EINVAL;
2903
2904         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2905         return 0;
2906 }
2907
2908 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
2909 {
2910         if (class_code < CLASS_CODE_USER_PROG1 ||
2911             class_code > CLASS_CODE_SCTP_IPV6)
2912                 return -EINVAL;
2913
2914         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2915         return 0;
2916 }
2917
2918 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
2919                               u32 offset, u32 size)
2920 {
2921         int i = skb_shinfo(skb)->nr_frags;
2922         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2923
2924         frag->page = page;
2925         frag->page_offset = offset;
2926         frag->size = size;
2927
2928         skb->len += size;
2929         skb->data_len += size;
2930         skb->truesize += size;
2931
2932         skb_shinfo(skb)->nr_frags = i + 1;
2933 }
2934
2935 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
2936 {
2937         a >>= PAGE_SHIFT;
2938         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
2939
2940         return (a & (MAX_RBR_RING_SIZE - 1));
2941 }
2942
2943 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
2944                                     struct page ***link)
2945 {
2946         unsigned int h = niu_hash_rxaddr(rp, addr);
2947         struct page *p, **pp;
2948
2949         addr &= PAGE_MASK;
2950         pp = &rp->rxhash[h];
2951         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
2952                 if (p->index == addr) {
2953                         *link = pp;
2954                         break;
2955                 }
2956         }
2957
2958         return p;
2959 }
2960
2961 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
2962 {
2963         unsigned int h = niu_hash_rxaddr(rp, base);
2964
2965         page->index = base;
2966         page->mapping = (struct address_space *) rp->rxhash[h];
2967         rp->rxhash[h] = page;
2968 }
2969
2970 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
2971                             gfp_t mask, int start_index)
2972 {
2973         struct page *page;
2974         u64 addr;
2975         int i;
2976
2977         page = alloc_page(mask);
2978         if (!page)
2979                 return -ENOMEM;
2980
2981         addr = np->ops->map_page(np->device, page, 0,
2982                                  PAGE_SIZE, DMA_FROM_DEVICE);
2983
2984         niu_hash_page(rp, page, addr);
2985         if (rp->rbr_blocks_per_page > 1)
2986                 atomic_add(rp->rbr_blocks_per_page - 1,
2987                            &compound_head(page)->_count);
2988
2989         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
2990                 __le32 *rbr = &rp->rbr[start_index + i];
2991
2992                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
2993                 addr += rp->rbr_block_size;
2994         }
2995
2996         return 0;
2997 }
2998
2999 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3000 {
3001         int index = rp->rbr_index;
3002
3003         rp->rbr_pending++;
3004         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3005                 int err = niu_rbr_add_page(np, rp, mask, index);
3006
3007                 if (unlikely(err)) {
3008                         rp->rbr_pending--;
3009                         return;
3010                 }
3011
3012                 rp->rbr_index += rp->rbr_blocks_per_page;
3013                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3014                 if (rp->rbr_index == rp->rbr_table_size)
3015                         rp->rbr_index = 0;
3016
3017                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3018                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3019                         rp->rbr_pending = 0;
3020                 }
3021         }
3022 }
3023
3024 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3025 {
3026         unsigned int index = rp->rcr_index;
3027         int num_rcr = 0;
3028
3029         rp->rx_dropped++;
3030         while (1) {
3031                 struct page *page, **link;
3032                 u64 addr, val;
3033                 u32 rcr_size;
3034
3035                 num_rcr++;
3036
3037                 val = le64_to_cpup(&rp->rcr[index]);
3038                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3039                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3040                 page = niu_find_rxpage(rp, addr, &link);
3041
3042                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3043                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3044                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3045                         *link = (struct page *) page->mapping;
3046                         np->ops->unmap_page(np->device, page->index,
3047                                             PAGE_SIZE, DMA_FROM_DEVICE);
3048                         page->index = 0;
3049                         page->mapping = NULL;
3050                         __free_page(page);
3051                         rp->rbr_refill_pending++;
3052                 }
3053
3054                 index = NEXT_RCR(rp, index);
3055                 if (!(val & RCR_ENTRY_MULTI))
3056                         break;
3057
3058         }
3059         rp->rcr_index = index;
3060
3061         return num_rcr;
3062 }
3063
3064 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
3065 {
3066         unsigned int index = rp->rcr_index;
3067         struct sk_buff *skb;
3068         int len, num_rcr;
3069
3070         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3071         if (unlikely(!skb))
3072                 return niu_rx_pkt_ignore(np, rp);
3073
3074         num_rcr = 0;
3075         while (1) {
3076                 struct page *page, **link;
3077                 u32 rcr_size, append_size;
3078                 u64 addr, val, off;
3079
3080                 num_rcr++;
3081
3082                 val = le64_to_cpup(&rp->rcr[index]);
3083
3084                 len = (val & RCR_ENTRY_L2_LEN) >>
3085                         RCR_ENTRY_L2_LEN_SHIFT;
3086                 len -= ETH_FCS_LEN;
3087
3088                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3089                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3090                 page = niu_find_rxpage(rp, addr, &link);
3091
3092                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3093                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3094
3095                 off = addr & ~PAGE_MASK;
3096                 append_size = rcr_size;
3097                 if (num_rcr == 1) {
3098                         int ptype;
3099
3100                         off += 2;
3101                         append_size -= 2;
3102
3103                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3104                         if ((ptype == RCR_PKT_TYPE_TCP ||
3105                              ptype == RCR_PKT_TYPE_UDP) &&
3106                             !(val & (RCR_ENTRY_NOPORT |
3107                                      RCR_ENTRY_ERROR)))
3108                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3109                         else
3110                                 skb->ip_summed = CHECKSUM_NONE;
3111                 }
3112                 if (!(val & RCR_ENTRY_MULTI))
3113                         append_size = len - skb->len;
3114
3115                 niu_rx_skb_append(skb, page, off, append_size);
3116                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3117                         *link = (struct page *) page->mapping;
3118                         np->ops->unmap_page(np->device, page->index,
3119                                             PAGE_SIZE, DMA_FROM_DEVICE);
3120                         page->index = 0;
3121                         page->mapping = NULL;
3122                         rp->rbr_refill_pending++;
3123                 } else
3124                         get_page(page);
3125
3126                 index = NEXT_RCR(rp, index);
3127                 if (!(val & RCR_ENTRY_MULTI))
3128                         break;
3129
3130         }
3131         rp->rcr_index = index;
3132
3133         skb_reserve(skb, NET_IP_ALIGN);
3134         __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
3135
3136         rp->rx_packets++;
3137         rp->rx_bytes += skb->len;
3138
3139         skb->protocol = eth_type_trans(skb, np->dev);
3140         netif_receive_skb(skb);
3141
3142         np->dev->last_rx = jiffies;
3143
3144         return num_rcr;
3145 }
3146
3147 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3148 {
3149         int blocks_per_page = rp->rbr_blocks_per_page;
3150         int err, index = rp->rbr_index;
3151
3152         err = 0;
3153         while (index < (rp->rbr_table_size - blocks_per_page)) {
3154                 err = niu_rbr_add_page(np, rp, mask, index);
3155                 if (err)
3156                         break;
3157
3158                 index += blocks_per_page;
3159         }
3160
3161         rp->rbr_index = index;
3162         return err;
3163 }
3164
3165 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3166 {
3167         int i;
3168
3169         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3170                 struct page *page;
3171
3172                 page = rp->rxhash[i];
3173                 while (page) {
3174                         struct page *next = (struct page *) page->mapping;
3175                         u64 base = page->index;
3176
3177                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
3178                                             DMA_FROM_DEVICE);
3179                         page->index = 0;
3180                         page->mapping = NULL;
3181
3182                         __free_page(page);
3183
3184                         page = next;
3185                 }
3186         }
3187
3188         for (i = 0; i < rp->rbr_table_size; i++)
3189                 rp->rbr[i] = cpu_to_le32(0);
3190         rp->rbr_index = 0;
3191 }
3192
3193 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3194 {
3195         struct tx_buff_info *tb = &rp->tx_buffs[idx];
3196         struct sk_buff *skb = tb->skb;
3197         struct tx_pkt_hdr *tp;
3198         u64 tx_flags;
3199         int i, len;
3200
3201         tp = (struct tx_pkt_hdr *) skb->data;
3202         tx_flags = le64_to_cpup(&tp->flags);
3203
3204         rp->tx_packets++;
3205         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3206                          ((tx_flags & TXHDR_PAD) / 2));
3207
3208         len = skb_headlen(skb);
3209         np->ops->unmap_single(np->device, tb->mapping,
3210                               len, DMA_TO_DEVICE);
3211
3212         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3213                 rp->mark_pending--;
3214
3215         tb->skb = NULL;
3216         do {
3217                 idx = NEXT_TX(rp, idx);
3218                 len -= MAX_TX_DESC_LEN;
3219         } while (len > 0);
3220
3221         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3222                 tb = &rp->tx_buffs[idx];
3223                 BUG_ON(tb->skb != NULL);
3224                 np->ops->unmap_page(np->device, tb->mapping,
3225                                     skb_shinfo(skb)->frags[i].size,
3226                                     DMA_TO_DEVICE);
3227                 idx = NEXT_TX(rp, idx);
3228         }
3229
3230         dev_kfree_skb(skb);
3231
3232         return idx;
3233 }
3234
3235 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
3236
3237 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3238 {
3239         struct netdev_queue *txq;
3240         u16 pkt_cnt, tmp;
3241         int cons, index;
3242         u64 cs;
3243
3244         index = (rp - np->tx_rings);
3245         txq = netdev_get_tx_queue(np->dev, index);
3246
3247         cs = rp->tx_cs;
3248         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3249                 goto out;
3250
3251         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3252         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3253                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3254
3255         rp->last_pkt_cnt = tmp;
3256
3257         cons = rp->cons;
3258
3259         niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
3260                np->dev->name, pkt_cnt, cons);
3261
3262         while (pkt_cnt--)
3263                 cons = release_tx_packet(np, rp, cons);
3264
3265         rp->cons = cons;
3266         smp_mb();
3267
3268 out:
3269         if (unlikely(netif_tx_queue_stopped(txq) &&
3270                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3271                 __netif_tx_lock(txq, smp_processor_id());
3272                 if (netif_tx_queue_stopped(txq) &&
3273                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3274                         netif_tx_wake_queue(txq);
3275                 __netif_tx_unlock(txq);
3276         }
3277 }
3278
3279 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
3280 {
3281         int qlen, rcr_done = 0, work_done = 0;
3282         struct rxdma_mailbox *mbox = rp->mbox;
3283         u64 stat;
3284
3285 #if 1
3286         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3287         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3288 #else
3289         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3290         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3291 #endif
3292         mbox->rx_dma_ctl_stat = 0;
3293         mbox->rcrstat_a = 0;
3294
3295         niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
3296                np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
3297
3298         rcr_done = work_done = 0;
3299         qlen = min(qlen, budget);
3300         while (work_done < qlen) {
3301                 rcr_done += niu_process_rx_pkt(np, rp);
3302                 work_done++;
3303         }
3304
3305         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3306                 unsigned int i;
3307
3308                 for (i = 0; i < rp->rbr_refill_pending; i++)
3309                         niu_rbr_refill(np, rp, GFP_ATOMIC);
3310                 rp->rbr_refill_pending = 0;
3311         }
3312
3313         stat = (RX_DMA_CTL_STAT_MEX |
3314                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3315                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3316
3317         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3318
3319         return work_done;
3320 }
3321
3322 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3323 {
3324         u64 v0 = lp->v0;
3325         u32 tx_vec = (v0 >> 32);
3326         u32 rx_vec = (v0 & 0xffffffff);
3327         int i, work_done = 0;
3328
3329         niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
3330                np->dev->name, (unsigned long long) v0);
3331
3332         for (i = 0; i < np->num_tx_rings; i++) {
3333                 struct tx_ring_info *rp = &np->tx_rings[i];
3334                 if (tx_vec & (1 << rp->tx_channel))
3335                         niu_tx_work(np, rp);
3336                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3337         }
3338
3339         for (i = 0; i < np->num_rx_rings; i++) {
3340                 struct rx_ring_info *rp = &np->rx_rings[i];
3341
3342                 if (rx_vec & (1 << rp->rx_channel)) {
3343                         int this_work_done;
3344
3345                         this_work_done = niu_rx_work(np, rp,
3346                                                      budget);
3347
3348                         budget -= this_work_done;
3349                         work_done += this_work_done;
3350                 }
3351                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3352         }
3353
3354         return work_done;
3355 }
3356
3357 static int niu_poll(struct napi_struct *napi, int budget)
3358 {
3359         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3360         struct niu *np = lp->np;
3361         int work_done;
3362
3363         work_done = niu_poll_core(np, lp, budget);
3364
3365         if (work_done < budget) {
3366                 netif_rx_complete(np->dev, napi);
3367                 niu_ldg_rearm(np, lp, 1);
3368         }
3369         return work_done;
3370 }
3371
3372 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3373                                   u64 stat)
3374 {
3375         dev_err(np->device, PFX "%s: RX channel %u errors ( ",
3376                 np->dev->name, rp->rx_channel);
3377
3378         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3379                 printk("RBR_TMOUT ");
3380         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3381                 printk("RSP_CNT ");
3382         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3383                 printk("BYTE_EN_BUS ");
3384         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3385                 printk("RSP_DAT ");
3386         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3387                 printk("RCR_ACK ");
3388         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3389                 printk("RCR_SHA_PAR ");
3390         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3391                 printk("RBR_PRE_PAR ");
3392         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3393                 printk("CONFIG ");
3394         if (stat & RX_DMA_CTL_STAT_RCRINCON)
3395                 printk("RCRINCON ");
3396         if (stat & RX_DMA_CTL_STAT_RCRFULL)
3397                 printk("RCRFULL ");
3398         if (stat & RX_DMA_CTL_STAT_RBRFULL)
3399                 printk("RBRFULL ");
3400         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3401                 printk("RBRLOGPAGE ");
3402         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3403                 printk("CFIGLOGPAGE ");
3404         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3405                 printk("DC_FIDO ");
3406
3407         printk(")\n");
3408 }
3409
3410 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3411 {
3412         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3413         int err = 0;
3414
3415
3416         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3417                     RX_DMA_CTL_STAT_PORT_FATAL))
3418                 err = -EINVAL;
3419
3420         if (err) {
3421                 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
3422                         np->dev->name, rp->rx_channel,
3423                         (unsigned long long) stat);
3424
3425                 niu_log_rxchan_errors(np, rp, stat);
3426         }
3427
3428         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3429              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3430
3431         return err;
3432 }
3433
3434 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3435                                   u64 cs)
3436 {
3437         dev_err(np->device, PFX "%s: TX channel %u errors ( ",
3438                 np->dev->name, rp->tx_channel);
3439
3440         if (cs & TX_CS_MBOX_ERR)
3441                 printk("MBOX ");
3442         if (cs & TX_CS_PKT_SIZE_ERR)
3443                 printk("PKT_SIZE ");
3444         if (cs & TX_CS_TX_RING_OFLOW)
3445                 printk("TX_RING_OFLOW ");
3446         if (cs & TX_CS_PREF_BUF_PAR_ERR)
3447                 printk("PREF_BUF_PAR ");
3448         if (cs & TX_CS_NACK_PREF)
3449                 printk("NACK_PREF ");
3450         if (cs & TX_CS_NACK_PKT_RD)
3451                 printk("NACK_PKT_RD ");
3452         if (cs & TX_CS_CONF_PART_ERR)
3453                 printk("CONF_PART ");
3454         if (cs & TX_CS_PKT_PRT_ERR)
3455                 printk("PKT_PTR ");
3456
3457         printk(")\n");
3458 }
3459
3460 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3461 {
3462         u64 cs, logh, logl;
3463
3464         cs = nr64(TX_CS(rp->tx_channel));
3465         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3466         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3467
3468         dev_err(np->device, PFX "%s: TX channel %u error, "
3469                 "cs[%llx] logh[%llx] logl[%llx]\n",
3470                 np->dev->name, rp->tx_channel,
3471                 (unsigned long long) cs,
3472                 (unsigned long long) logh,
3473                 (unsigned long long) logl);
3474
3475         niu_log_txchan_errors(np, rp, cs);
3476
3477         return -ENODEV;
3478 }
3479
3480 static int niu_mif_interrupt(struct niu *np)
3481 {
3482         u64 mif_status = nr64(MIF_STATUS);
3483         int phy_mdint = 0;
3484
3485         if (np->flags & NIU_FLAGS_XMAC) {
3486                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3487
3488                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3489                         phy_mdint = 1;
3490         }
3491
3492         dev_err(np->device, PFX "%s: MIF interrupt, "
3493                 "stat[%llx] phy_mdint(%d)\n",
3494                 np->dev->name, (unsigned long long) mif_status, phy_mdint);
3495
3496         return -ENODEV;
3497 }
3498
3499 static void niu_xmac_interrupt(struct niu *np)
3500 {
3501         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3502         u64 val;
3503
3504         val = nr64_mac(XTXMAC_STATUS);
3505         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3506                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3507         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3508                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3509         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3510                 mp->tx_fifo_errors++;
3511         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3512                 mp->tx_overflow_errors++;
3513         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3514                 mp->tx_max_pkt_size_errors++;
3515         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3516                 mp->tx_underflow_errors++;
3517
3518         val = nr64_mac(XRXMAC_STATUS);
3519         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3520                 mp->rx_local_faults++;
3521         if (val & XRXMAC_STATUS_RFLT_DET)
3522                 mp->rx_remote_faults++;
3523         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3524                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3525         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3526                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3527         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3528                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3529         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3530                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3531         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3532                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3533         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3534                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3535         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3536                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3537         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3538                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3539         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3540                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3541         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3542                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3543         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3544                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3545         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3546                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3547         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3548                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3549         if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
3550                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3551         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3552                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3553         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3554                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3555         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3556                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3557         if (val & XRXMAC_STATUS_RXUFLOW)
3558                 mp->rx_underflows++;
3559         if (val & XRXMAC_STATUS_RXOFLOW)
3560                 mp->rx_overflows++;
3561
3562         val = nr64_mac(XMAC_FC_STAT);
3563         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3564                 mp->pause_off_state++;
3565         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3566                 mp->pause_on_state++;
3567         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3568                 mp->pause_received++;
3569 }
3570
3571 static void niu_bmac_interrupt(struct niu *np)
3572 {
3573         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3574         u64 val;
3575
3576         val = nr64_mac(BTXMAC_STATUS);
3577         if (val & BTXMAC_STATUS_UNDERRUN)
3578                 mp->tx_underflow_errors++;
3579         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3580                 mp->tx_max_pkt_size_errors++;
3581         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
3582                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
3583         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
3584                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
3585
3586         val = nr64_mac(BRXMAC_STATUS);
3587         if (val & BRXMAC_STATUS_OVERFLOW)
3588                 mp->rx_overflows++;
3589         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
3590                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
3591         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
3592                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3593         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
3594                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3595         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
3596                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
3597
3598         val = nr64_mac(BMAC_CTRL_STATUS);
3599         if (val & BMAC_CTRL_STATUS_NOPAUSE)
3600                 mp->pause_off_state++;
3601         if (val & BMAC_CTRL_STATUS_PAUSE)
3602                 mp->pause_on_state++;
3603         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
3604                 mp->pause_received++;
3605 }
3606
3607 static int niu_mac_interrupt(struct niu *np)
3608 {
3609         if (np->flags & NIU_FLAGS_XMAC)
3610                 niu_xmac_interrupt(np);
3611         else
3612                 niu_bmac_interrupt(np);
3613
3614         return 0;
3615 }
3616
3617 static void niu_log_device_error(struct niu *np, u64 stat)
3618 {
3619         dev_err(np->device, PFX "%s: Core device errors ( ",
3620                 np->dev->name);
3621
3622         if (stat & SYS_ERR_MASK_META2)
3623                 printk("META2 ");
3624         if (stat & SYS_ERR_MASK_META1)
3625                 printk("META1 ");
3626         if (stat & SYS_ERR_MASK_PEU)
3627                 printk("PEU ");
3628         if (stat & SYS_ERR_MASK_TXC)
3629                 printk("TXC ");
3630         if (stat & SYS_ERR_MASK_RDMC)
3631                 printk("RDMC ");
3632         if (stat & SYS_ERR_MASK_TDMC)
3633                 printk("TDMC ");
3634         if (stat & SYS_ERR_MASK_ZCP)
3635                 printk("ZCP ");
3636         if (stat & SYS_ERR_MASK_FFLP)
3637                 printk("FFLP ");
3638         if (stat & SYS_ERR_MASK_IPP)
3639                 printk("IPP ");
3640         if (stat & SYS_ERR_MASK_MAC)
3641                 printk("MAC ");
3642         if (stat & SYS_ERR_MASK_SMX)
3643                 printk("SMX ");
3644
3645         printk(")\n");
3646 }
3647
3648 static int niu_device_error(struct niu *np)
3649 {
3650         u64 stat = nr64(SYS_ERR_STAT);
3651
3652         dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
3653                 np->dev->name, (unsigned long long) stat);
3654
3655         niu_log_device_error(np, stat);
3656
3657         return -ENODEV;
3658 }
3659
3660 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
3661                               u64 v0, u64 v1, u64 v2)
3662 {
3663
3664         int i, err = 0;
3665
3666         lp->v0 = v0;
3667         lp->v1 = v1;
3668         lp->v2 = v2;
3669
3670         if (v1 & 0x00000000ffffffffULL) {
3671                 u32 rx_vec = (v1 & 0xffffffff);
3672
3673                 for (i = 0; i < np->num_rx_rings; i++) {
3674                         struct rx_ring_info *rp = &np->rx_rings[i];
3675
3676                         if (rx_vec & (1 << rp->rx_channel)) {
3677                                 int r = niu_rx_error(np, rp);
3678                                 if (r) {
3679                                         err = r;
3680                                 } else {
3681                                         if (!v0)
3682                                                 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3683                                                      RX_DMA_CTL_STAT_MEX);
3684                                 }
3685                         }
3686                 }
3687         }
3688         if (v1 & 0x7fffffff00000000ULL) {
3689                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
3690
3691                 for (i = 0; i < np->num_tx_rings; i++) {
3692                         struct tx_ring_info *rp = &np->tx_rings[i];
3693
3694                         if (tx_vec & (1 << rp->tx_channel)) {
3695                                 int r = niu_tx_error(np, rp);
3696                                 if (r)
3697                                         err = r;
3698                         }
3699                 }
3700         }
3701         if ((v0 | v1) & 0x8000000000000000ULL) {
3702                 int r = niu_mif_interrupt(np);
3703                 if (r)
3704                         err = r;
3705         }
3706         if (v2) {
3707                 if (v2 & 0x01ef) {
3708                         int r = niu_mac_interrupt(np);
3709                         if (r)
3710                                 err = r;
3711                 }
3712                 if (v2 & 0x0210) {
3713                         int r = niu_device_error(np);
3714                         if (r)
3715                                 err = r;
3716                 }
3717         }
3718
3719         if (err)
3720                 niu_enable_interrupts(np, 0);
3721
3722         return err;
3723 }
3724
3725 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
3726                             int ldn)
3727 {
3728         struct rxdma_mailbox *mbox = rp->mbox;
3729         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3730
3731         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
3732                       RX_DMA_CTL_STAT_RCRTO);
3733         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
3734
3735         niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
3736                np->dev->name, (unsigned long long) stat);
3737 }
3738
3739 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
3740                             int ldn)
3741 {
3742         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
3743
3744         niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
3745                np->dev->name, (unsigned long long) rp->tx_cs);
3746 }
3747
3748 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
3749 {
3750         struct niu_parent *parent = np->parent;
3751         u32 rx_vec, tx_vec;
3752         int i;
3753
3754         tx_vec = (v0 >> 32);
3755         rx_vec = (v0 & 0xffffffff);
3756
3757         for (i = 0; i < np->num_rx_rings; i++) {
3758                 struct rx_ring_info *rp = &np->rx_rings[i];
3759                 int ldn = LDN_RXDMA(rp->rx_channel);
3760
3761                 if (parent->ldg_map[ldn] != ldg)
3762                         continue;
3763
3764                 nw64(LD_IM0(ldn), LD_IM0_MASK);
3765                 if (rx_vec & (1 << rp->rx_channel))
3766                         niu_rxchan_intr(np, rp, ldn);
3767         }
3768
3769         for (i = 0; i < np->num_tx_rings; i++) {
3770                 struct tx_ring_info *rp = &np->tx_rings[i];
3771                 int ldn = LDN_TXDMA(rp->tx_channel);
3772
3773                 if (parent->ldg_map[ldn] != ldg)
3774                         continue;
3775
3776                 nw64(LD_IM0(ldn), LD_IM0_MASK);
3777                 if (tx_vec & (1 << rp->tx_channel))
3778                         niu_txchan_intr(np, rp, ldn);
3779         }
3780 }
3781
3782 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
3783                               u64 v0, u64 v1, u64 v2)
3784 {
3785         if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
3786                 lp->v0 = v0;
3787                 lp->v1 = v1;
3788                 lp->v2 = v2;
3789                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
3790                 __netif_rx_schedule(np->dev, &lp->napi);
3791         }
3792 }
3793
3794 static irqreturn_t niu_interrupt(int irq, void *dev_id)
3795 {
3796         struct niu_ldg *lp = dev_id;
3797         struct niu *np = lp->np;
3798         int ldg = lp->ldg_num;
3799         unsigned long flags;
3800         u64 v0, v1, v2;
3801
3802         if (netif_msg_intr(np))
3803                 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
3804                        lp, ldg);
3805
3806         spin_lock_irqsave(&np->lock, flags);
3807
3808         v0 = nr64(LDSV0(ldg));
3809         v1 = nr64(LDSV1(ldg));
3810         v2 = nr64(LDSV2(ldg));
3811
3812         if (netif_msg_intr(np))
3813                 printk("v0[%llx] v1[%llx] v2[%llx]\n",
3814                        (unsigned long long) v0,
3815                        (unsigned long long) v1,
3816                        (unsigned long long) v2);
3817
3818         if (unlikely(!v0 && !v1 && !v2)) {
3819                 spin_unlock_irqrestore(&np->lock, flags);
3820                 return IRQ_NONE;
3821         }
3822
3823         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
3824                 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
3825                 if (err)
3826                         goto out;
3827         }
3828         if (likely(v0 & ~((u64)1 << LDN_MIF)))
3829                 niu_schedule_napi(np, lp, v0, v1, v2);
3830         else
3831                 niu_ldg_rearm(np, lp, 1);
3832 out:
3833         spin_unlock_irqrestore(&np->lock, flags);
3834
3835         return IRQ_HANDLED;
3836 }
3837
3838 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
3839 {
3840         if (rp->mbox) {
3841                 np->ops->free_coherent(np->device,
3842                                        sizeof(struct rxdma_mailbox),
3843                                        rp->mbox, rp->mbox_dma);
3844                 rp->mbox = NULL;
3845         }
3846         if (rp->rcr) {
3847                 np->ops->free_coherent(np->device,
3848                                        MAX_RCR_RING_SIZE * sizeof(__le64),
3849                                        rp->rcr, rp->rcr_dma);
3850                 rp->rcr = NULL;
3851                 rp->rcr_table_size = 0;
3852                 rp->rcr_index = 0;
3853         }
3854         if (rp->rbr) {
3855                 niu_rbr_free(np, rp);
3856
3857                 np->ops->free_coherent(np->device,
3858                                        MAX_RBR_RING_SIZE * sizeof(__le32),
3859                                        rp->rbr, rp->rbr_dma);
3860                 rp->rbr = NULL;
3861                 rp->rbr_table_size = 0;
3862                 rp->rbr_index = 0;
3863         }
3864         kfree(rp->rxhash);
3865         rp->rxhash = NULL;
3866 }
3867
3868 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
3869 {
3870         if (rp->mbox) {
3871                 np->ops->free_coherent(np->device,
3872                                        sizeof(struct txdma_mailbox),
3873                                        rp->mbox, rp->mbox_dma);
3874                 rp->mbox = NULL;
3875         }
3876         if (rp->descr) {
3877                 int i;
3878
3879                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
3880                         if (rp->tx_buffs[i].skb)
3881                                 (void) release_tx_packet(np, rp, i);
3882                 }
3883
3884                 np->ops->free_coherent(np->device,
3885                                        MAX_TX_RING_SIZE * sizeof(__le64),
3886                                        rp->descr, rp->descr_dma);
3887                 rp->descr = NULL;
3888                 rp->pending = 0;
3889                 rp->prod = 0;
3890                 rp->cons = 0;
3891                 rp->wrap_bit = 0;
3892         }
3893 }
3894
3895 static void niu_free_channels(struct niu *np)
3896 {
3897         int i;
3898
3899         if (np->rx_rings) {
3900                 for (i = 0; i < np->num_rx_rings; i++) {
3901                         struct rx_ring_info *rp = &np->rx_rings[i];
3902
3903                         niu_free_rx_ring_info(np, rp);
3904                 }
3905                 kfree(np->rx_rings);
3906                 np->rx_rings = NULL;
3907                 np->num_rx_rings = 0;
3908         }
3909
3910         if (np->tx_rings) {
3911                 for (i = 0; i < np->num_tx_rings; i++) {
3912                         struct tx_ring_info *rp = &np->tx_rings[i];
3913
3914                         niu_free_tx_ring_info(np, rp);
3915                 }
3916                 kfree(np->tx_rings);
3917                 np->tx_rings = NULL;
3918                 np->num_tx_rings = 0;
3919         }
3920 }
3921
3922 static int niu_alloc_rx_ring_info(struct niu *np,
3923                                   struct rx_ring_info *rp)
3924 {
3925         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
3926
3927         rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
3928                              GFP_KERNEL);
3929         if (!rp->rxhash)
3930                 return -ENOMEM;
3931
3932         rp->mbox = np->ops->alloc_coherent(np->device,
3933                                            sizeof(struct rxdma_mailbox),
3934                                            &rp->mbox_dma, GFP_KERNEL);
3935         if (!rp->mbox)
3936                 return -ENOMEM;
3937         if ((unsigned long)rp->mbox & (64UL - 1)) {
3938                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3939                         "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
3940                 return -EINVAL;
3941         }
3942
3943         rp->rcr = np->ops->alloc_coherent(np->device,
3944                                           MAX_RCR_RING_SIZE * sizeof(__le64),
3945                                           &rp->rcr_dma, GFP_KERNEL);
3946         if (!rp->rcr)
3947                 return -ENOMEM;
3948         if ((unsigned long)rp->rcr & (64UL - 1)) {
3949                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3950                         "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
3951                 return -EINVAL;
3952         }
3953         rp->rcr_table_size = MAX_RCR_RING_SIZE;
3954         rp->rcr_index = 0;
3955
3956         rp->rbr = np->ops->alloc_coherent(np->device,
3957                                           MAX_RBR_RING_SIZE * sizeof(__le32),
3958                                           &rp->rbr_dma, GFP_KERNEL);
3959         if (!rp->rbr)
3960                 return -ENOMEM;
3961         if ((unsigned long)rp->rbr & (64UL - 1)) {
3962                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3963                         "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
3964                 return -EINVAL;
3965         }
3966         rp->rbr_table_size = MAX_RBR_RING_SIZE;
3967         rp->rbr_index = 0;
3968         rp->rbr_pending = 0;
3969
3970         return 0;
3971 }
3972
3973 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
3974 {
3975         int mtu = np->dev->mtu;
3976
3977         /* These values are recommended by the HW designers for fair
3978          * utilization of DRR amongst the rings.
3979          */
3980         rp->max_burst = mtu + 32;
3981         if (rp->max_burst > 4096)
3982                 rp->max_burst = 4096;
3983 }
3984
3985 static int niu_alloc_tx_ring_info(struct niu *np,
3986                                   struct tx_ring_info *rp)
3987 {
3988         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
3989
3990         rp->mbox = np->ops->alloc_coherent(np->device,
3991                                            sizeof(struct txdma_mailbox),
3992                                            &rp->mbox_dma, GFP_KERNEL);
3993         if (!rp->mbox)
3994                 return -ENOMEM;
3995         if ((unsigned long)rp->mbox & (64UL - 1)) {
3996                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3997                         "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
3998                 return -EINVAL;
3999         }
4000
4001         rp->descr = np->ops->alloc_coherent(np->device,
4002                                             MAX_TX_RING_SIZE * sizeof(__le64),
4003                                             &rp->descr_dma, GFP_KERNEL);
4004         if (!rp->descr)
4005                 return -ENOMEM;
4006         if ((unsigned long)rp->descr & (64UL - 1)) {
4007                 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4008                         "TXDMA descr table %p\n", np->dev->name, rp->descr);
4009                 return -EINVAL;
4010         }
4011
4012         rp->pending = MAX_TX_RING_SIZE;
4013         rp->prod = 0;
4014         rp->cons = 0;
4015         rp->wrap_bit = 0;
4016
4017         /* XXX make these configurable... XXX */
4018         rp->mark_freq = rp->pending / 4;
4019
4020         niu_set_max_burst(np, rp);
4021
4022         return 0;
4023 }
4024
4025 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4026 {
4027         u16 bss;
4028
4029         bss = min(PAGE_SHIFT, 15);
4030
4031         rp->rbr_block_size = 1 << bss;
4032         rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4033
4034         rp->rbr_sizes[0] = 256;
4035         rp->rbr_sizes[1] = 1024;
4036         if (np->dev->mtu > ETH_DATA_LEN) {
4037                 switch (PAGE_SIZE) {
4038                 case 4 * 1024:
4039                         rp->rbr_sizes[2] = 4096;
4040                         break;
4041
4042                 default:
4043                         rp->rbr_sizes[2] = 8192;
4044                         break;
4045                 }
4046         } else {
4047                 rp->rbr_sizes[2] = 2048;
4048         }
4049         rp->rbr_sizes[3] = rp->rbr_block_size;
4050 }
4051
4052 static int niu_alloc_channels(struct niu *np)
4053 {
4054         struct niu_parent *parent = np->parent;
4055         int first_rx_channel, first_tx_channel;
4056         int i, port, err;
4057
4058         port = np->port;
4059         first_rx_channel = first_tx_channel = 0;
4060         for (i = 0; i < port; i++) {
4061                 first_rx_channel += parent->rxchan_per_port[i];
4062                 first_tx_channel += parent->txchan_per_port[i];
4063         }
4064
4065         np->num_rx_rings = parent->rxchan_per_port[port];
4066         np->num_tx_rings = parent->txchan_per_port[port];
4067
4068         np->dev->real_num_tx_queues = np->num_tx_rings;
4069
4070         np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
4071                                GFP_KERNEL);
4072         err = -ENOMEM;
4073         if (!np->rx_rings)
4074                 goto out_err;
4075
4076         for (i = 0; i < np->num_rx_rings; i++) {
4077                 struct rx_ring_info *rp = &np->rx_rings[i];
4078
4079                 rp->np = np;
4080                 rp->rx_channel = first_rx_channel + i;
4081
4082                 err = niu_alloc_rx_ring_info(np, rp);
4083                 if (err)
4084                         goto out_err;
4085
4086                 niu_size_rbr(np, rp);
4087
4088                 /* XXX better defaults, configurable, etc... XXX */
4089                 rp->nonsyn_window = 64;
4090                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4091                 rp->syn_window = 64;
4092                 rp->syn_threshold = rp->rcr_table_size - 64;
4093                 rp->rcr_pkt_threshold = 16;
4094                 rp->rcr_timeout = 8;
4095                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4096                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4097                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4098
4099                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4100                 if (err)
4101                         return err;
4102         }
4103
4104         np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
4105                                GFP_KERNEL);
4106         err = -ENOMEM;
4107         if (!np->tx_rings)
4108                 goto out_err;
4109
4110         for (i = 0; i < np->num_tx_rings; i++) {
4111                 struct tx_ring_info *rp = &np->tx_rings[i];
4112
4113                 rp->np = np;
4114                 rp->tx_channel = first_tx_channel + i;
4115
4116                 err = niu_alloc_tx_ring_info(np, rp);
4117                 if (err)
4118                         goto out_err;
4119         }
4120
4121         return 0;
4122
4123 out_err:
4124         niu_free_channels(np);
4125         return err;
4126 }
4127
4128 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4129 {
4130         int limit = 1000;
4131
4132         while (--limit > 0) {
4133                 u64 val = nr64(TX_CS(channel));
4134                 if (val & TX_CS_SNG_STATE)
4135                         return 0;
4136         }
4137         return -ENODEV;
4138 }
4139
4140 static int niu_tx_channel_stop(struct niu *np, int channel)
4141 {
4142         u64 val = nr64(TX_CS(channel));
4143
4144         val |= TX_CS_STOP_N_GO;
4145         nw64(TX_CS(channel), val);
4146
4147         return niu_tx_cs_sng_poll(np, channel);
4148 }
4149
4150 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4151 {
4152         int limit = 1000;
4153
4154         while (--limit > 0) {
4155                 u64 val = nr64(TX_CS(channel));
4156                 if (!(val & TX_CS_RST))
4157                         return 0;
4158         }
4159         return -ENODEV;
4160 }
4161
4162 static int niu_tx_channel_reset(struct niu *np, int channel)
4163 {
4164         u64 val = nr64(TX_CS(channel));
4165         int err;
4166
4167         val |= TX_CS_RST;
4168         nw64(TX_CS(channel), val);
4169
4170         err = niu_tx_cs_reset_poll(np, channel);
4171         if (!err)
4172                 nw64(TX_RING_KICK(channel), 0);
4173
4174         return err;
4175 }
4176
4177 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4178 {
4179         u64 val;
4180
4181         nw64(TX_LOG_MASK1(channel), 0);
4182         nw64(TX_LOG_VAL1(channel), 0);
4183         nw64(TX_LOG_MASK2(channel), 0);
4184         nw64(TX_LOG_VAL2(channel), 0);
4185         nw64(TX_LOG_PAGE_RELO1(channel), 0);
4186         nw64(TX_LOG_PAGE_RELO2(channel), 0);
4187         nw64(TX_LOG_PAGE_HDL(channel), 0);
4188
4189         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4190         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4191         nw64(TX_LOG_PAGE_VLD(channel), val);
4192
4193         /* XXX TXDMA 32bit mode? XXX */
4194
4195         return 0;
4196 }
4197
4198 static void niu_txc_enable_port(struct niu *np, int on)
4199 {
4200         unsigned long flags;
4201         u64 val, mask;
4202
4203         niu_lock_parent(np, flags);
4204         val = nr64(TXC_CONTROL);
4205         mask = (u64)1 << np->port;
4206         if (on) {
4207                 val |= TXC_CONTROL_ENABLE | mask;
4208         } else {
4209                 val &= ~mask;
4210                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4211                         val &= ~TXC_CONTROL_ENABLE;
4212         }
4213         nw64(TXC_CONTROL, val);
4214         niu_unlock_parent(np, flags);
4215 }
4216
4217 static void niu_txc_set_imask(struct niu *np, u64 imask)
4218 {
4219         unsigned long flags;
4220         u64 val;
4221
4222         niu_lock_parent(np, flags);
4223         val = nr64(TXC_INT_MASK);
4224         val &= ~TXC_INT_MASK_VAL(np->port);
4225         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4226         niu_unlock_parent(np, flags);
4227 }
4228
4229 static void niu_txc_port_dma_enable(struct niu *np, int on)
4230 {
4231         u64 val = 0;
4232
4233         if (on) {
4234                 int i;
4235
4236                 for (i = 0; i < np->num_tx_rings; i++)
4237                         val |= (1 << np->tx_rings[i].tx_channel);
4238         }
4239         nw64(TXC_PORT_DMA(np->port), val);
4240 }
4241
4242 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4243 {
4244         int err, channel = rp->tx_channel;
4245         u64 val, ring_len;
4246
4247         err = niu_tx_channel_stop(np, channel);
4248         if (err)
4249                 return err;
4250
4251         err = niu_tx_channel_reset(np, channel);
4252         if (err)
4253                 return err;
4254
4255         err = niu_tx_channel_lpage_init(np, channel);
4256         if (err)
4257                 return err;
4258
4259         nw64(TXC_DMA_MAX(channel), rp->max_burst);
4260         nw64(TX_ENT_MSK(channel), 0);
4261
4262         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4263                               TX_RNG_CFIG_STADDR)) {
4264                 dev_err(np->device, PFX "%s: TX ring channel %d "
4265                         "DMA addr (%llx) is not aligned.\n",
4266                         np->dev->name, channel,
4267                         (unsigned long long) rp->descr_dma);
4268                 return -EINVAL;
4269         }
4270
4271         /* The length field in TX_RNG_CFIG is measured in 64-byte
4272          * blocks.  rp->pending is the number of TX descriptors in
4273          * our ring, 8 bytes each, thus we divide by 8 bytes more
4274          * to get the proper value the chip wants.
4275          */
4276         ring_len = (rp->pending / 8);
4277
4278         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4279                rp->descr_dma);
4280         nw64(TX_RNG_CFIG(channel), val);
4281
4282         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4283             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4284                 dev_err(np->device, PFX "%s: TX ring channel %d "
4285                         "MBOX addr (%llx) is has illegal bits.\n",
4286                         np->dev->name, channel,
4287                         (unsigned long long) rp->mbox_dma);
4288                 return -EINVAL;
4289         }
4290         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4291         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4292
4293         nw64(TX_CS(channel), 0);
4294
4295         rp->last_pkt_cnt = 0;
4296
4297         return 0;
4298 }
4299
4300 static void niu_init_rdc_groups(struct niu *np)
4301 {
4302         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4303         int i, first_table_num = tp->first_table_num;
4304
4305         for (i = 0; i < tp->num_tables; i++) {
4306                 struct rdc_table *tbl = &tp->tables[i];
4307                 int this_table = first_table_num + i;
4308                 int slot;
4309
4310                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4311                         nw64(RDC_TBL(this_table, slot),
4312                              tbl->rxdma_channel[slot]);
4313         }
4314
4315         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4316 }
4317
4318 static void niu_init_drr_weight(struct niu *np)
4319 {
4320         int type = phy_decode(np->parent->port_phy, np->port);
4321         u64 val;
4322
4323         switch (type) {
4324         case PORT_TYPE_10G:
4325                 val = PT_DRR_WEIGHT_DEFAULT_10G;
4326                 break;
4327
4328         case PORT_TYPE_1G:
4329         default:
4330                 val = PT_DRR_WEIGHT_DEFAULT_1G;
4331                 break;
4332         }
4333         nw64(PT_DRR_WT(np->port), val);
4334 }
4335
4336 static int niu_init_hostinfo(struct niu *np)
4337 {
4338         struct niu_parent *parent = np->parent;
4339         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4340         int i, err, num_alt = niu_num_alt_addr(np);
4341         int first_rdc_table = tp->first_table_num;
4342
4343         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4344         if (err)
4345                 return err;
4346
4347         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4348         if (err)
4349                 return err;
4350
4351         for (i = 0; i < num_alt; i++) {
4352                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4353                 if (err)
4354                         return err;
4355         }
4356
4357         return 0;
4358 }
4359
4360 static int niu_rx_channel_reset(struct niu *np, int channel)
4361 {
4362         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4363                                       RXDMA_CFIG1_RST, 1000, 10,
4364                                       "RXDMA_CFIG1");
4365 }
4366
4367 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4368 {
4369         u64 val;
4370
4371         nw64(RX_LOG_MASK1(channel), 0);
4372         nw64(RX_LOG_VAL1(channel), 0);
4373         nw64(RX_LOG_MASK2(channel), 0);
4374         nw64(RX_LOG_VAL2(channel), 0);
4375         nw64(RX_LOG_PAGE_RELO1(channel), 0);
4376         nw64(RX_LOG_PAGE_RELO2(channel), 0);
4377         nw64(RX_LOG_PAGE_HDL(channel), 0);
4378
4379         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4380         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4381         nw64(RX_LOG_PAGE_VLD(channel), val);
4382
4383         return 0;
4384 }
4385
4386 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4387 {
4388         u64 val;
4389
4390         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4391                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4392                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4393                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4394         nw64(RDC_RED_PARA(rp->rx_channel), val);
4395 }
4396
4397 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4398 {
4399         u64 val = 0;
4400
4401         switch (rp->rbr_block_size) {
4402         case 4 * 1024:
4403                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4404                 break;
4405         case 8 * 1024:
4406                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4407                 break;
4408         case 16 * 1024:
4409                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4410                 break;
4411         case 32 * 1024:
4412                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4413                 break;
4414         default:
4415                 return -EINVAL;
4416         }
4417         val |= RBR_CFIG_B_VLD2;
4418         switch (rp->rbr_sizes[2]) {
4419         case 2 * 1024:
4420                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4421                 break;
4422         case 4 * 1024:
4423                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4424                 break;
4425         case 8 * 1024:
4426                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4427                 break;
4428         case 16 * 1024:
4429                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4430                 break;
4431
4432         default:
4433                 return -EINVAL;
4434         }
4435         val |= RBR_CFIG_B_VLD1;
4436         switch (rp->rbr_sizes[1]) {
4437         case 1 * 1024:
4438                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4439                 break;
4440         case 2 * 1024:
4441                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4442                 break;
4443         case 4 * 1024:
4444                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4445                 break;
4446         case 8 * 1024:
4447                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4448                 break;
4449
4450         default:
4451                 return -EINVAL;
4452         }
4453         val |= RBR_CFIG_B_VLD0;
4454         switch (rp->rbr_sizes[0]) {
4455         case 256:
4456                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4457                 break;
4458         case 512:
4459                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4460                 break;
4461         case 1 * 1024:
4462                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4463                 break;
4464         case 2 * 1024:
4465                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4466                 break;
4467
4468         default:
4469                 return -EINVAL;
4470         }
4471
4472         *ret = val;
4473         return 0;
4474 }
4475
4476 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4477 {
4478         u64 val = nr64(RXDMA_CFIG1(channel));
4479         int limit;
4480
4481         if (on)
4482                 val |= RXDMA_CFIG1_EN;
4483         else
4484                 val &= ~RXDMA_CFIG1_EN;
4485         nw64(RXDMA_CFIG1(channel), val);
4486
4487         limit = 1000;
4488         while (--limit > 0) {
4489                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4490                         break;
4491                 udelay(10);
4492         }
4493         if (limit <= 0)
4494                 return -ENODEV;
4495         return 0;
4496 }
4497
4498 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4499 {
4500         int err, channel = rp->rx_channel;
4501         u64 val;
4502
4503         err = niu_rx_channel_reset(np, channel);
4504         if (err)
4505                 return err;
4506
4507         err = niu_rx_channel_lpage_init(np, channel);
4508         if (err)
4509                 return err;
4510
4511         niu_rx_channel_wred_init(np, rp);
4512
4513         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4514         nw64(RX_DMA_CTL_STAT(channel),
4515              (RX_DMA_CTL_STAT_MEX |
4516               RX_DMA_CTL_STAT_RCRTHRES |
4517               RX_DMA_CTL_STAT_RCRTO |
4518               RX_DMA_CTL_STAT_RBR_EMPTY));
4519         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4520         nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
4521         nw64(RBR_CFIG_A(channel),
4522              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4523              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4524         err = niu_compute_rbr_cfig_b(rp, &val);
4525         if (err)
4526                 return err;
4527         nw64(RBR_CFIG_B(channel), val);
4528         nw64(RCRCFIG_A(channel),
4529              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4530              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4531         nw64(RCRCFIG_B(channel),
4532              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4533              RCRCFIG_B_ENTOUT |
4534              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4535
4536         err = niu_enable_rx_channel(np, channel, 1);
4537         if (err)
4538                 return err;
4539
4540         nw64(RBR_KICK(channel), rp->rbr_index);
4541
4542         val = nr64(RX_DMA_CTL_STAT(channel));
4543         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4544         nw64(RX_DMA_CTL_STAT(channel), val);
4545
4546         return 0;
4547 }
4548
4549 static int niu_init_rx_channels(struct niu *np)
4550 {
4551         unsigned long flags;
4552         u64 seed = jiffies_64;
4553         int err, i;
4554
4555         niu_lock_parent(np, flags);
4556         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4557         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4558         niu_unlock_parent(np, flags);
4559
4560         /* XXX RXDMA 32bit mode? XXX */
4561
4562         niu_init_rdc_groups(np);
4563         niu_init_drr_weight(np);
4564
4565         err = niu_init_hostinfo(np);
4566         if (err)
4567                 return err;
4568
4569         for (i = 0; i < np->num_rx_rings; i++) {
4570                 struct rx_ring_info *rp = &np->rx_rings[i];
4571
4572                 err = niu_init_one_rx_channel(np, rp);
4573                 if (err)
4574                         return err;
4575         }
4576
4577         return 0;
4578 }
4579
4580 static int niu_set_ip_frag_rule(struct niu *np)
4581 {
4582         struct niu_parent *parent = np->parent;
4583         struct niu_classifier *cp = &np->clas;
4584         struct niu_tcam_entry *tp;
4585         int index, err;
4586
4587         /* XXX fix this allocation scheme XXX */
4588         index = cp->tcam_index;
4589         tp = &parent->tcam[index];
4590
4591         /* Note that the noport bit is the same in both ipv4 and
4592          * ipv6 format TCAM entries.
4593          */
4594         memset(tp, 0, sizeof(*tp));
4595         tp->key[1] = TCAM_V4KEY1_NOPORT;
4596         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
4597         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
4598                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
4599         err = tcam_write(np, index, tp->key, tp->key_mask);
4600         if (err)
4601                 return err;
4602         err = tcam_assoc_write(np, index, tp->assoc_data);
4603         if (err)
4604                 return err;
4605
4606         return 0;
4607 }
4608
4609 static int niu_init_classifier_hw(struct niu *np)
4610 {
4611         struct niu_parent *parent = np->parent;
4612         struct niu_classifier *cp = &np->clas;
4613         int i, err;
4614
4615         nw64(H1POLY, cp->h1_init);
4616         nw64(H2POLY, cp->h2_init);
4617
4618         err = niu_init_hostinfo(np);
4619         if (err)
4620                 return err;
4621
4622         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
4623                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
4624
4625                 vlan_tbl_write(np, i, np->port,
4626                                vp->vlan_pref, vp->rdc_num);
4627         }
4628
4629         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
4630                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
4631
4632                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
4633                                                 ap->rdc_num, ap->mac_pref);
4634                 if (err)
4635                         return err;
4636         }
4637
4638         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
4639                 int index = i - CLASS_CODE_USER_PROG1;
4640
4641                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
4642                 if (err)
4643                         return err;
4644                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
4645                 if (err)
4646                         return err;
4647         }
4648
4649         err = niu_set_ip_frag_rule(np);
4650         if (err)
4651                 return err;
4652
4653         tcam_enable(np, 1);
4654
4655         return 0;
4656 }
4657
4658 static int niu_zcp_write(struct niu *np, int index, u64 *data)
4659 {
4660         nw64(ZCP_RAM_DATA0, data[0]);
4661         nw64(ZCP_RAM_DATA1, data[1]);
4662         nw64(ZCP_RAM_DATA2, data[2]);
4663         nw64(ZCP_RAM_DATA3, data[3]);
4664         nw64(ZCP_RAM_DATA4, data[4]);
4665         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
4666         nw64(ZCP_RAM_ACC,
4667              (ZCP_RAM_ACC_WRITE |
4668               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
4669               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
4670
4671         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4672                                    1000, 100);
4673 }
4674
4675 static int niu_zcp_read(struct niu *np, int index, u64 *data)
4676 {
4677         int err;
4678
4679         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4680                                   1000, 100);
4681         if (err) {
4682                 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
4683                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
4684                         (unsigned long long) nr64(ZCP_RAM_ACC));
4685                 return err;
4686         }
4687
4688         nw64(ZCP_RAM_ACC,
4689              (ZCP_RAM_ACC_READ |
4690               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
4691               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
4692
4693         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4694                                   1000, 100);
4695         if (err) {
4696                 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
4697                         "ZCP_RAM_ACC[%llx]\n", np->dev->name,
4698                         (unsigned long long) nr64(ZCP_RAM_ACC));
4699                 return err;
4700         }
4701
4702         data[0] = nr64(ZCP_RAM_DATA0);
4703         data[1] = nr64(ZCP_RAM_DATA1);
4704         data[2] = nr64(ZCP_RAM_DATA2);
4705         data[3] = nr64(ZCP_RAM_DATA3);
4706         data[4] = nr64(ZCP_RAM_DATA4);
4707
4708         return 0;
4709 }
4710
4711 static void niu_zcp_cfifo_reset(struct niu *np)
4712 {
4713         u64 val = nr64(RESET_CFIFO);
4714
4715         val |= RESET_CFIFO_RST(np->port);
4716         nw64(RESET_CFIFO, val);
4717         udelay(10);
4718
4719         val &= ~RESET_CFIFO_RST(np->port);
4720         nw64(RESET_CFIFO, val);
4721 }
4722
4723 static int niu_init_zcp(struct niu *np)
4724 {
4725         u64 data[5], rbuf[5];
4726         int i, max, err;
4727
4728         if (np->parent->plat_type != PLAT_TYPE_NIU) {
4729                 if (np->port == 0 || np->port == 1)
4730                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
4731                 else
4732                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
4733         } else
4734                 max = NIU_CFIFO_ENTRIES;
4735
4736         data[0] = 0;
4737         data[1] = 0;
4738         data[2] = 0;
4739         data[3] = 0;
4740         data[4] = 0;
4741
4742         for (i = 0; i < max; i++) {
4743                 err = niu_zcp_write(np, i, data);
4744                 if (err)
4745                         return err;
4746                 err = niu_zcp_read(np, i, rbuf);
4747                 if (err)
4748                         return err;
4749         }
4750
4751         niu_zcp_cfifo_reset(np);
4752         nw64(CFIFO_ECC(np->port), 0);
4753         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
4754         (void) nr64(ZCP_INT_STAT);
4755         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
4756
4757         return 0;
4758 }
4759
4760 static void niu_ipp_write(struct niu *np, int index, u64 *data)
4761 {
4762         u64 val = nr64_ipp(IPP_CFIG);
4763
4764         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
4765         nw64_ipp(IPP_DFIFO_WR_PTR, index);
4766         nw64_ipp(IPP_DFIFO_WR0, data[0]);
4767         nw64_ipp(IPP_DFIFO_WR1, data[1]);
4768         nw64_ipp(IPP_DFIFO_WR2, data[2]);
4769         nw64_ipp(IPP_DFIFO_WR3, data[3]);
4770         nw64_ipp(IPP_DFIFO_WR4, data[4]);
4771         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
4772 }
4773
4774 static void niu_ipp_read(struct niu *np, int index, u64 *data)
4775 {
4776         nw64_ipp(IPP_DFIFO_RD_PTR, index);
4777         data[0] = nr64_ipp(IPP_DFIFO_RD0);
4778         data[1] = nr64_ipp(IPP_DFIFO_RD1);
4779         data[2] = nr64_ipp(IPP_DFIFO_RD2);
4780         data[3] = nr64_ipp(IPP_DFIFO_RD3);
4781         data[4] = nr64_ipp(IPP_DFIFO_RD4);
4782 }
4783
4784 static int niu_ipp_reset(struct niu *np)
4785 {
4786         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
4787                                           1000, 100, "IPP_CFIG");
4788 }
4789
4790 static int niu_init_ipp(struct niu *np)
4791 {
4792         u64 data[5], rbuf[5], val;
4793         int i, max, err;
4794
4795         if (np->parent->plat_type != PLAT_TYPE_NIU) {
4796                 if (np->port == 0 || np->port == 1)
4797                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
4798                 else
4799                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
4800         } else
4801                 max = NIU_DFIFO_ENTRIES;
4802
4803         data[0] = 0;
4804         data[1] = 0;
4805         data[2] = 0;
4806         data[3] = 0;
4807         data[4] = 0;
4808
4809         for (i = 0; i < max; i++) {
4810                 niu_ipp_write(np, i, data);
4811                 niu_ipp_read(np, i, rbuf);
4812         }
4813
4814         (void) nr64_ipp(IPP_INT_STAT);
4815         (void) nr64_ipp(IPP_INT_STAT);
4816
4817         err = niu_ipp_reset(np);
4818         if (err)
4819                 return err;
4820
4821         (void) nr64_ipp(IPP_PKT_DIS);
4822         (void) nr64_ipp(IPP_BAD_CS_CNT);
4823         (void) nr64_ipp(IPP_ECC);
4824
4825         (void) nr64_ipp(IPP_INT_STAT);
4826
4827         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
4828
4829         val = nr64_ipp(IPP_CFIG);
4830         val &= ~IPP_CFIG_IP_MAX_PKT;
4831         val |= (IPP_CFIG_IPP_ENABLE |
4832                 IPP_CFIG_DFIFO_ECC_EN |
4833                 IPP_CFIG_DROP_BAD_CRC |
4834                 IPP_CFIG_CKSUM_EN |
4835                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
4836         nw64_ipp(IPP_CFIG, val);
4837
4838         return 0;
4839 }
4840
4841 static void niu_handle_led(struct niu *np, int status)
4842 {
4843         u64 val;
4844         val = nr64_mac(XMAC_CONFIG);
4845
4846         if ((np->flags & NIU_FLAGS_10G) != 0 &&
4847             (np->flags & NIU_FLAGS_FIBER) != 0) {
4848                 if (status) {
4849                         val |= XMAC_CONFIG_LED_POLARITY;
4850                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
4851                 } else {
4852                         val |= XMAC_CONFIG_FORCE_LED_ON;
4853                         val &= ~XMAC_CONFIG_LED_POLARITY;
4854                 }
4855         }
4856
4857         nw64_mac(XMAC_CONFIG, val);
4858 }
4859
4860 static void niu_init_xif_xmac(struct niu *np)
4861 {
4862         struct niu_link_config *lp = &np->link_config;
4863         u64 val;
4864
4865         if (np->flags & NIU_FLAGS_XCVR_SERDES) {
4866                 val = nr64(MIF_CONFIG);
4867                 val |= MIF_CONFIG_ATCA_GE;
4868                 nw64(MIF_CONFIG, val);
4869         }
4870
4871         val = nr64_mac(XMAC_CONFIG);
4872         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
4873
4874         val |= XMAC_CONFIG_TX_OUTPUT_EN;
4875
4876         if (lp->loopback_mode == LOOPBACK_MAC) {
4877                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
4878                 val |= XMAC_CONFIG_LOOPBACK;
4879         } else {
4880                 val &= ~XMAC_CONFIG_LOOPBACK;
4881         }
4882
4883         if (np->flags & NIU_FLAGS_10G) {
4884                 val &= ~XMAC_CONFIG_LFS_DISABLE;
4885         } else {
4886                 val |= XMAC_CONFIG_LFS_DISABLE;
4887                 if (!(np->flags & NIU_FLAGS_FIBER) &&
4888                     !(np->flags & NIU_FLAGS_XCVR_SERDES))
4889                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
4890                 else
4891                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
4892         }
4893
4894         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4895
4896         if (lp->active_speed == SPEED_100)
4897                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
4898         else
4899                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
4900
4901         nw64_mac(XMAC_CONFIG, val);
4902
4903         val = nr64_mac(XMAC_CONFIG);
4904         val &= ~XMAC_CONFIG_MODE_MASK;
4905         if (np->flags & NIU_FLAGS_10G) {
4906                 val |= XMAC_CONFIG_MODE_XGMII;
4907         } else {
4908                 if (lp->active_speed == SPEED_100)
4909                         val |= XMAC_CONFIG_MODE_MII;
4910                 else
4911                         val |= XMAC_CONFIG_MODE_GMII;
4912         }
4913
4914         nw64_mac(XMAC_CONFIG, val);
4915 }
4916
4917 static void niu_init_xif_bmac(struct niu *np)
4918 {
4919         struct niu_link_config *lp = &np->link_config;
4920         u64 val;
4921
4922         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
4923
4924         if (lp->loopback_mode == LOOPBACK_MAC)
4925                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
4926         else
4927                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
4928
4929         if (lp->active_speed == SPEED_1000)
4930                 val |= BMAC_XIF_CONFIG_GMII_MODE;
4931         else
4932                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
4933
4934         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
4935                  BMAC_XIF_CONFIG_LED_POLARITY);
4936
4937         if (!(np->flags & NIU_FLAGS_10G) &&
4938             !(np->flags & NIU_FLAGS_FIBER) &&
4939             lp->active_speed == SPEED_100)
4940                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
4941         else
4942                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
4943
4944         nw64_mac(BMAC_XIF_CONFIG, val);
4945 }
4946
4947 static void niu_init_xif(struct niu *np)
4948 {
4949         if (np->flags & NIU_FLAGS_XMAC)
4950                 niu_init_xif_xmac(np);
4951         else
4952                 niu_init_xif_bmac(np);
4953 }
4954
4955 static void niu_pcs_mii_reset(struct niu *np)
4956 {
4957         int limit = 1000;
4958         u64 val = nr64_pcs(PCS_MII_CTL);
4959         val |= PCS_MII_CTL_RST;
4960         nw64_pcs(PCS_MII_CTL, val);
4961         while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
4962                 udelay(100);
4963                 val = nr64_pcs(PCS_MII_CTL);
4964         }
4965 }
4966
4967 static void niu_xpcs_reset(struct niu *np)
4968 {
4969         int limit = 1000;
4970         u64 val = nr64_xpcs(XPCS_CONTROL1);
4971         val |= XPCS_CONTROL1_RESET;
4972         nw64_xpcs(XPCS_CONTROL1, val);
4973         while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
4974                 udelay(100);
4975                 val = nr64_xpcs(XPCS_CONTROL1);
4976         }
4977 }
4978
4979 static int niu_init_pcs(struct niu *np)
4980 {
4981         struct niu_link_config *lp = &np->link_config;
4982         u64 val;
4983
4984         switch (np->flags & (NIU_FLAGS_10G |
4985                              NIU_FLAGS_FIBER |
4986                              NIU_FLAGS_XCVR_SERDES)) {
4987         case NIU_FLAGS_FIBER:
4988                 /* 1G fiber */
4989                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
4990                 nw64_pcs(PCS_DPATH_MODE, 0);
4991                 niu_pcs_mii_reset(np);
4992                 break;
4993
4994         case NIU_FLAGS_10G:
4995         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
4996         case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
4997                 /* 10G SERDES */
4998                 if (!(np->flags & NIU_FLAGS_XMAC))
4999                         return -EINVAL;
5000
5001                 /* 10G copper or fiber */
5002                 val = nr64_mac(XMAC_CONFIG);
5003                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5004                 nw64_mac(XMAC_CONFIG, val);
5005
5006                 niu_xpcs_reset(np);
5007
5008                 val = nr64_xpcs(XPCS_CONTROL1);
5009                 if (lp->loopback_mode == LOOPBACK_PHY)
5010                         val |= XPCS_CONTROL1_LOOPBACK;
5011                 else
5012                         val &= ~XPCS_CONTROL1_LOOPBACK;
5013                 nw64_xpcs(XPCS_CONTROL1, val);
5014
5015                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5016                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5017                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5018                 break;
5019
5020
5021         case NIU_FLAGS_XCVR_SERDES:
5022                 /* 1G SERDES */
5023                 niu_pcs_mii_reset(np);
5024                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5025                 nw64_pcs(PCS_DPATH_MODE, 0);
5026                 break;
5027
5028         case 0:
5029                 /* 1G copper */
5030         case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5031                 /* 1G RGMII FIBER */
5032                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5033                 niu_pcs_mii_reset(np);
5034                 break;
5035
5036         default:
5037                 return -EINVAL;
5038         }
5039
5040         return 0;
5041 }
5042
5043 static int niu_reset_tx_xmac(struct niu *np)
5044 {
5045         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5046                                           (XTXMAC_SW_RST_REG_RS |
5047                                            XTXMAC_SW_RST_SOFT_RST),
5048                                           1000, 100, "XTXMAC_SW_RST");
5049 }
5050
5051 static int niu_reset_tx_bmac(struct niu *np)
5052 {
5053         int limit;
5054
5055         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5056         limit = 1000;
5057         while (--limit >= 0) {
5058                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5059                         break;
5060                 udelay(100);
5061         }
5062         if (limit < 0) {
5063                 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
5064                         "BTXMAC_SW_RST[%llx]\n",
5065                         np->port,
5066                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5067                 return -ENODEV;
5068         }
5069
5070         return 0;
5071 }
5072
5073 static int niu_reset_tx_mac(struct niu *np)
5074 {
5075         if (np->flags & NIU_FLAGS_XMAC)
5076                 return niu_reset_tx_xmac(np);
5077         else
5078                 return niu_reset_tx_bmac(np);
5079 }
5080
5081 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5082 {
5083         u64 val;
5084
5085         val = nr64_mac(XMAC_MIN);
5086         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5087                  XMAC_MIN_RX_MIN_PKT_SIZE);
5088         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5089         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5090         nw64_mac(XMAC_MIN, val);
5091
5092         nw64_mac(XMAC_MAX, max);
5093
5094         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5095
5096         val = nr64_mac(XMAC_IPG);
5097         if (np->flags & NIU_FLAGS_10G) {
5098                 val &= ~XMAC_IPG_IPG_XGMII;
5099                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5100         } else {
5101                 val &= ~XMAC_IPG_IPG_MII_GMII;
5102                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5103         }
5104         nw64_mac(XMAC_IPG, val);
5105
5106         val = nr64_mac(XMAC_CONFIG);
5107         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5108                  XMAC_CONFIG_STRETCH_MODE |
5109                  XMAC_CONFIG_VAR_MIN_IPG_EN |
5110                  XMAC_CONFIG_TX_ENABLE);
5111         nw64_mac(XMAC_CONFIG, val);
5112
5113         nw64_mac(TXMAC_FRM_CNT, 0);
5114         nw64_mac(TXMAC_BYTE_CNT, 0);
5115 }
5116
5117 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5118 {
5119         u64 val;
5120
5121         nw64_mac(BMAC_MIN_FRAME, min);
5122         nw64_mac(BMAC_MAX_FRAME, max);
5123
5124         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5125         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5126         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5127
5128         val = nr64_mac(BTXMAC_CONFIG);
5129         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5130                  BTXMAC_CONFIG_ENABLE);
5131         nw64_mac(BTXMAC_CONFIG, val);
5132 }
5133
5134 static void niu_init_tx_mac(struct niu *np)
5135 {
5136         u64 min, max;
5137
5138         min = 64;
5139         if (np->dev->mtu > ETH_DATA_LEN)
5140                 max = 9216;
5141         else
5142                 max = 1522;
5143
5144         /* The XMAC_MIN register only accepts values for TX min which
5145          * have the low 3 bits cleared.
5146          */
5147         BUILD_BUG_ON(min & 0x7);
5148
5149         if (np->flags & NIU_FLAGS_XMAC)
5150                 niu_init_tx_xmac(np, min, max);
5151         else
5152                 niu_init_tx_bmac(np, min, max);
5153 }
5154
5155 static int niu_reset_rx_xmac(struct niu *np)
5156 {
5157         int limit;
5158
5159         nw64_mac(XRXMAC_SW_RST,
5160                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5161         limit = 1000;
5162         while (--limit >= 0) {
5163                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5164                                                  XRXMAC_SW_RST_SOFT_RST)))
5165                     break;
5166                 udelay(100);
5167         }
5168         if (limit < 0) {
5169                 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
5170                         "XRXMAC_SW_RST[%llx]\n",
5171                         np->port,
5172                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5173                 return -ENODEV;
5174         }
5175
5176         return 0;
5177 }
5178
5179 static int niu_reset_rx_bmac(struct niu *np)
5180 {
5181         int limit;
5182
5183         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5184         limit = 1000;
5185         while (--limit >= 0) {
5186                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5187                         break;
5188                 udelay(100);
5189         }
5190         if (limit < 0) {
5191                 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
5192                         "BRXMAC_SW_RST[%llx]\n",
5193                         np->port,
5194                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5195                 return -ENODEV;
5196         }
5197
5198         return 0;
5199 }
5200
5201 static int niu_reset_rx_mac(struct niu *np)
5202 {
5203         if (np->flags & NIU_FLAGS_XMAC)
5204                 return niu_reset_rx_xmac(np);
5205         else
5206                 return niu_reset_rx_bmac(np);
5207 }
5208
5209 static void niu_init_rx_xmac(struct niu *np)
5210 {
5211         struct niu_parent *parent = np->parent;
5212         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5213         int first_rdc_table = tp->first_table_num;
5214         unsigned long i;
5215         u64 val;
5216
5217         nw64_mac(XMAC_ADD_FILT0, 0);
5218         nw64_mac(XMAC_ADD_FILT1, 0);
5219         nw64_mac(XMAC_ADD_FILT2, 0);
5220         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5221         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5222         for (i = 0; i < MAC_NUM_HASH; i++)
5223                 nw64_mac(XMAC_HASH_TBL(i), 0);
5224         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5225         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5226         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5227
5228         val = nr64_mac(XMAC_CONFIG);
5229         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5230                  XMAC_CONFIG_PROMISCUOUS |
5231                  XMAC_CONFIG_PROMISC_GROUP |
5232                  XMAC_CONFIG_ERR_CHK_DIS |
5233                  XMAC_CONFIG_RX_CRC_CHK_DIS |
5234                  XMAC_CONFIG_RESERVED_MULTICAST |
5235                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
5236                  XMAC_CONFIG_ADDR_FILTER_EN |
5237                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
5238                  XMAC_CONFIG_STRIP_CRC |
5239                  XMAC_CONFIG_PASS_FLOW_CTRL |
5240                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5241         val |= (XMAC_CONFIG_HASH_FILTER_EN);
5242         nw64_mac(XMAC_CONFIG, val);
5243
5244         nw64_mac(RXMAC_BT_CNT, 0);
5245         nw64_mac(RXMAC_BC_FRM_CNT, 0);
5246         nw64_mac(RXMAC_MC_FRM_CNT, 0);
5247         nw64_mac(RXMAC_FRAG_CNT, 0);
5248         nw64_mac(RXMAC_HIST_CNT1, 0);
5249         nw64_mac(RXMAC_HIST_CNT2, 0);
5250         nw64_mac(RXMAC_HIST_CNT3, 0);
5251         nw64_mac(RXMAC_HIST_CNT4, 0);
5252         nw64_mac(RXMAC_HIST_CNT5, 0);
5253         nw64_mac(RXMAC_HIST_CNT6, 0);
5254         nw64_mac(RXMAC_HIST_CNT7, 0);
5255         nw64_mac(RXMAC_MPSZER_CNT, 0);
5256         nw64_mac(RXMAC_CRC_ER_CNT, 0);
5257         nw64_mac(RXMAC_CD_VIO_CNT, 0);
5258         nw64_mac(LINK_FAULT_CNT, 0);
5259 }
5260
5261 static void niu_init_rx_bmac(struct niu *np)
5262 {
5263         struct niu_parent *parent = np->parent;
5264         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5265         int first_rdc_table = tp->first_table_num;
5266         unsigned long i;
5267         u64 val;
5268
5269         nw64_mac(BMAC_ADD_FILT0, 0);
5270         nw64_mac(BMAC_ADD_FILT1, 0);
5271         nw64_mac(BMAC_ADD_FILT2, 0);
5272         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5273         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5274         for (i = 0; i < MAC_NUM_HASH; i++)
5275                 nw64_mac(BMAC_HASH_TBL(i), 0);
5276         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5277         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5278         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5279
5280         val = nr64_mac(BRXMAC_CONFIG);
5281         val &= ~(BRXMAC_CONFIG_ENABLE |
5282                  BRXMAC_CONFIG_STRIP_PAD |
5283                  BRXMAC_CONFIG_STRIP_FCS |
5284                  BRXMAC_CONFIG_PROMISC |
5285                  BRXMAC_CONFIG_PROMISC_GRP |
5286                  BRXMAC_CONFIG_ADDR_FILT_EN |
5287                  BRXMAC_CONFIG_DISCARD_DIS);
5288         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5289         nw64_mac(BRXMAC_CONFIG, val);
5290
5291         val = nr64_mac(BMAC_ADDR_CMPEN);
5292         val |= BMAC_ADDR_CMPEN_EN0;
5293         nw64_mac(BMAC_ADDR_CMPEN, val);
5294 }
5295
5296 static void niu_init_rx_mac(struct niu *np)
5297 {
5298         niu_set_primary_mac(np, np->dev->dev_addr);
5299
5300         if (np->flags & NIU_FLAGS_XMAC)
5301                 niu_init_rx_xmac(np);
5302         else
5303                 niu_init_rx_bmac(np);
5304 }
5305
5306 static void niu_enable_tx_xmac(struct niu *np, int on)
5307 {
5308         u64 val = nr64_mac(XMAC_CONFIG);
5309
5310         if (on)
5311                 val |= XMAC_CONFIG_TX_ENABLE;
5312         else
5313                 val &= ~XMAC_CONFIG_TX_ENABLE;
5314         nw64_mac(XMAC_CONFIG, val);
5315 }
5316
5317 static void niu_enable_tx_bmac(struct niu *np, int on)
5318 {
5319         u64 val = nr64_mac(BTXMAC_CONFIG);
5320
5321         if (on)
5322                 val |= BTXMAC_CONFIG_ENABLE;
5323         else
5324                 val &= ~BTXMAC_CONFIG_ENABLE;
5325         nw64_mac(BTXMAC_CONFIG, val);
5326 }
5327
5328 static void niu_enable_tx_mac(struct niu *np, int on)
5329 {
5330         if (np->flags & NIU_FLAGS_XMAC)
5331                 niu_enable_tx_xmac(np, on);
5332         else
5333                 niu_enable_tx_bmac(np, on);
5334 }
5335
5336 static void niu_enable_rx_xmac(struct niu *np, int on)
5337 {
5338         u64 val = nr64_mac(XMAC_CONFIG);
5339
5340         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5341                  XMAC_CONFIG_PROMISCUOUS);
5342
5343         if (np->flags & NIU_FLAGS_MCAST)
5344                 val |= XMAC_CONFIG_HASH_FILTER_EN;
5345         if (np->flags & NIU_FLAGS_PROMISC)
5346                 val |= XMAC_CONFIG_PROMISCUOUS;
5347
5348         if (on)
5349                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5350         else
5351                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5352         nw64_mac(XMAC_CONFIG, val);
5353 }
5354
5355 static void niu_enable_rx_bmac(struct niu *np, int on)
5356 {
5357         u64 val = nr64_mac(BRXMAC_CONFIG);
5358
5359         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5360                  BRXMAC_CONFIG_PROMISC);
5361
5362         if (np->flags & NIU_FLAGS_MCAST)
5363                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5364         if (np->flags & NIU_FLAGS_PROMISC)
5365                 val |= BRXMAC_CONFIG_PROMISC;
5366
5367         if (on)
5368                 val |= BRXMAC_CONFIG_ENABLE;
5369         else
5370                 val &= ~BRXMAC_CONFIG_ENABLE;
5371         nw64_mac(BRXMAC_CONFIG, val);
5372 }
5373
5374 static void niu_enable_rx_mac(struct niu *np, int on)
5375 {
5376         if (np->flags & NIU_FLAGS_XMAC)
5377                 niu_enable_rx_xmac(np, on);
5378         else
5379                 niu_enable_rx_bmac(np, on);
5380 }
5381
5382 static int niu_init_mac(struct niu *np)
5383 {
5384         int err;
5385
5386         niu_init_xif(np);
5387         err = niu_init_pcs(np);
5388         if (err)
5389                 return err;
5390
5391         err = niu_reset_tx_mac(np);
5392         if (err)
5393                 return err;
5394         niu_init_tx_mac(np);
5395         err = niu_reset_rx_mac(np);
5396         if (err)
5397                 return err;
5398         niu_init_rx_mac(np);
5399
5400         /* This looks hookey but the RX MAC reset we just did will
5401          * undo some of the state we setup in niu_init_tx_mac() so we
5402          * have to call it again.  In particular, the RX MAC reset will
5403          * set the XMAC_MAX register back to it's default value.
5404          */
5405         niu_init_tx_mac(np);
5406         niu_enable_tx_mac(np, 1);
5407
5408         niu_enable_rx_mac(np, 1);
5409
5410         return 0;
5411 }
5412
5413 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5414 {
5415         (void) niu_tx_channel_stop(np, rp->tx_channel);
5416 }
5417
5418 static void niu_stop_tx_channels(struct niu *np)
5419 {
5420         int i;
5421
5422         for (i = 0; i < np->num_tx_rings; i++) {
5423                 struct tx_ring_info *rp = &np->tx_rings[i];
5424
5425                 niu_stop_one_tx_channel(np, rp);
5426         }
5427 }
5428
5429 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5430 {
5431         (void) niu_tx_channel_reset(np, rp->tx_channel);
5432 }
5433
5434 static void niu_reset_tx_channels(struct niu *np)
5435 {
5436         int i;
5437
5438         for (i = 0; i < np->num_tx_rings; i++) {
5439                 struct tx_ring_info *rp = &np->tx_rings[i];
5440
5441                 niu_reset_one_tx_channel(np, rp);
5442         }
5443 }
5444
5445 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5446 {
5447         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5448 }
5449
5450 static void niu_stop_rx_channels(struct niu *np)
5451 {
5452         int i;
5453
5454         for (i = 0; i < np->num_rx_rings; i++) {
5455                 struct rx_ring_info *rp = &np->rx_rings[i];
5456
5457                 niu_stop_one_rx_channel(np, rp);
5458         }
5459 }
5460
5461 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5462 {
5463         int channel = rp->rx_channel;
5464
5465         (void) niu_rx_channel_reset(np, channel);
5466         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5467         nw64(RX_DMA_CTL_STAT(channel), 0);
5468         (void) niu_enable_rx_channel(np, channel, 0);
5469 }
5470
5471 static void niu_reset_rx_channels(struct niu *np)
5472 {
5473         int i;
5474
5475         for (i = 0; i < np->num_rx_rings; i++) {
5476                 struct rx_ring_info *rp = &np->rx_rings[i];
5477
5478                 niu_reset_one_rx_channel(np, rp);
5479         }
5480 }
5481
5482 static void niu_disable_ipp(struct niu *np)
5483 {
5484         u64 rd, wr, val;
5485         int limit;
5486
5487         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5488         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5489         limit = 100;
5490         while (--limit >= 0 && (rd != wr)) {
5491                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5492                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5493         }
5494         if (limit < 0 &&
5495             (rd != 0 && wr != 1)) {
5496                 dev_err(np->device, PFX "%s: IPP would not quiesce, "
5497                         "rd_ptr[%llx] wr_ptr[%llx]\n",
5498                         np->dev->name,
5499                         (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
5500                         (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
5501         }
5502
5503         val = nr64_ipp(IPP_CFIG);
5504         val &= ~(IPP_CFIG_IPP_ENABLE |
5505                  IPP_CFIG_DFIFO_ECC_EN |
5506                  IPP_CFIG_DROP_BAD_CRC |
5507                  IPP_CFIG_CKSUM_EN);
5508         nw64_ipp(IPP_CFIG, val);
5509
5510         (void) niu_ipp_reset(np);
5511 }
5512
5513 static int niu_init_hw(struct niu *np)
5514 {
5515         int i, err;
5516
5517         niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
5518         niu_txc_enable_port(np, 1);
5519         niu_txc_port_dma_enable(np, 1);
5520         niu_txc_set_imask(np, 0);
5521
5522         niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
5523         for (i = 0; i < np->num_tx_rings; i++) {
5524                 struct tx_ring_info *rp = &np->tx_rings[i];
5525
5526                 err = niu_init_one_tx_channel(np, rp);
5527                 if (err)
5528                         return err;
5529         }
5530
5531         niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
5532         err = niu_init_rx_channels(np);
5533         if (err)
5534                 goto out_uninit_tx_channels;
5535
5536         niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
5537         err = niu_init_classifier_hw(np);
5538         if (err)
5539                 goto out_uninit_rx_channels;
5540
5541         niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
5542         err = niu_init_zcp(np);
5543         if (err)
5544                 goto out_uninit_rx_channels;
5545
5546         niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
5547         err = niu_init_ipp(np);
5548         if (err)
5549                 goto out_uninit_rx_channels;
5550
5551         niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
5552         err = niu_init_mac(np);
5553         if (err)
5554                 goto out_uninit_ipp;
5555
5556         return 0;
5557
5558 out_uninit_ipp:
5559         niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
5560         niu_disable_ipp(np);
5561
5562 out_uninit_rx_channels:
5563         niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
5564         niu_stop_rx_channels(np);
5565         niu_reset_rx_channels(np);
5566
5567 out_uninit_tx_channels:
5568         niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
5569         niu_stop_tx_channels(np);
5570         niu_reset_tx_channels(np);
5571
5572         return err;
5573 }
5574
5575 static void niu_stop_hw(struct niu *np)
5576 {
5577         niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
5578         niu_enable_interrupts(np, 0);
5579
5580         niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
5581         niu_enable_rx_mac(np, 0);
5582
5583         niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
5584         niu_disable_ipp(np);
5585
5586         niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
5587         niu_stop_tx_channels(np);
5588
5589         niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
5590         niu_stop_rx_channels(np);
5591
5592         niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
5593         niu_reset_tx_channels(np);
5594
5595         niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
5596         niu_reset_rx_channels(np);
5597 }
5598
5599 static int niu_request_irq(struct niu *np)
5600 {
5601         int i, j, err;
5602
5603         err = 0;
5604         for (i = 0; i < np->num_ldg; i++) {
5605                 struct niu_ldg *lp = &np->ldg[i];
5606
5607                 err = request_irq(lp->irq, niu_interrupt,
5608                                   IRQF_SHARED | IRQF_SAMPLE_RANDOM,
5609                                   np->dev->name, lp);
5610                 if (err)
5611                         goto out_free_irqs;
5612
5613         }
5614
5615         return 0;
5616
5617 out_free_irqs:
5618         for (j = 0; j < i; j++) {
5619                 struct niu_ldg *lp = &np->ldg[j];
5620
5621                 free_irq(lp->irq, lp);
5622         }
5623         return err;
5624 }
5625
5626 static void niu_free_irq(struct niu *np)
5627 {
5628         int i;
5629
5630         for (i = 0; i < np->num_ldg; i++) {
5631                 struct niu_ldg *lp = &np->ldg[i];
5632
5633                 free_irq(lp->irq, lp);
5634         }
5635 }
5636
5637 static void niu_enable_napi(struct niu *np)
5638 {
5639         int i;
5640
5641         for (i = 0; i < np->num_ldg; i++)
5642                 napi_enable(&np->ldg[i].napi);
5643 }
5644
5645 static void niu_disable_napi(struct niu *np)
5646 {
5647         int i;
5648
5649         for (i = 0; i < np->num_ldg; i++)
5650                 napi_disable(&np->ldg[i].napi);
5651 }
5652
5653 static int niu_open(struct net_device *dev)
5654 {
5655         struct niu *np = netdev_priv(dev);
5656         int err;
5657
5658         netif_carrier_off(dev);
5659
5660         err = niu_alloc_channels(np);
5661         if (err)
5662                 goto out_err;
5663
5664         err = niu_enable_interrupts(np, 0);
5665         if (err)
5666                 goto out_free_channels;
5667
5668         err = niu_request_irq(np);
5669         if (err)
5670                 goto out_free_channels;
5671
5672         niu_enable_napi(np);
5673
5674         spin_lock_irq(&np->lock);
5675
5676         err = niu_init_hw(np);
5677         if (!err) {
5678                 init_timer(&np->timer);
5679                 np->timer.expires = jiffies + HZ;
5680                 np->timer.data = (unsigned long) np;
5681                 np->timer.function = niu_timer;
5682
5683                 err = niu_enable_interrupts(np, 1);
5684                 if (err)
5685                         niu_stop_hw(np);
5686         }
5687
5688         spin_unlock_irq(&np->lock);
5689
5690         if (err) {
5691                 niu_disable_napi(np);
5692                 goto out_free_irq;
5693         }
5694
5695         netif_tx_start_all_queues(dev);
5696
5697         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
5698                 netif_carrier_on(dev);
5699
5700         add_timer(&np->timer);
5701
5702         return 0;
5703
5704 out_free_irq:
5705         niu_free_irq(np);
5706
5707 out_free_channels:
5708         niu_free_channels(np);
5709
5710 out_err:
5711         return err;
5712 }
5713
5714 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
5715 {
5716         cancel_work_sync(&np->reset_task);
5717
5718         niu_disable_napi(np);
5719         netif_tx_stop_all_queues(dev);
5720
5721         del_timer_sync(&np->timer);
5722
5723         spin_lock_irq(&np->lock);
5724
5725         niu_stop_hw(np);
5726
5727         spin_unlock_irq(&np->lock);
5728 }
5729
5730 static int niu_close(struct net_device *dev)
5731 {
5732         struct niu *np = netdev_priv(dev);
5733
5734         niu_full_shutdown(np, dev);
5735
5736         niu_free_irq(np);
5737
5738         niu_free_channels(np);
5739
5740         niu_handle_led(np, 0);
5741
5742         return 0;
5743 }
5744
5745 static void niu_sync_xmac_stats(struct niu *np)
5746 {
5747         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
5748
5749         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
5750         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
5751
5752         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
5753         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
5754         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
5755         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
5756         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
5757         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
5758         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
5759         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
5760         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
5761         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
5762         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
5763         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
5764         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
5765         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
5766         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
5767         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
5768 }
5769
5770 static void niu_sync_bmac_stats(struct niu *np)
5771 {
5772         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
5773
5774         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
5775         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
5776
5777         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
5778         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
5779         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
5780         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
5781 }
5782
5783 static void niu_sync_mac_stats(struct niu *np)
5784 {
5785         if (np->flags & NIU_FLAGS_XMAC)
5786                 niu_sync_xmac_stats(np);
5787         else
5788                 niu_sync_bmac_stats(np);
5789 }
5790
5791 static void niu_get_rx_stats(struct niu *np)
5792 {
5793         unsigned long pkts, dropped, errors, bytes;
5794         int i;
5795
5796         pkts = dropped = errors = bytes = 0;
5797         for (i = 0; i < np->num_rx_rings; i++) {
5798                 struct rx_ring_info *rp = &np->rx_rings[i];
5799
5800                 pkts += rp->rx_packets;
5801                 bytes += rp->rx_bytes;
5802                 dropped += rp->rx_dropped;
5803                 errors += rp->rx_errors;
5804         }
5805         np->net_stats.rx_packets = pkts;
5806         np->net_stats.rx_bytes = bytes;
5807         np->net_stats.rx_dropped = dropped;
5808         np->net_stats.rx_errors = errors;
5809 }
5810
5811 static void niu_get_tx_stats(struct niu *np)
5812 {
5813         unsigned long pkts, errors, bytes;
5814         int i;
5815
5816         pkts = errors = bytes = 0;
5817         for (i = 0; i < np->num_tx_rings; i++) {
5818                 struct tx_ring_info *rp = &np->tx_rings[i];
5819
5820                 pkts += rp->tx_packets;
5821                 bytes += rp->tx_bytes;
5822                 errors += rp->tx_errors;
5823         }
5824         np->net_stats.tx_packets = pkts;
5825         np->net_stats.tx_bytes = bytes;
5826         np->net_stats.tx_errors = errors;
5827 }
5828
5829 static struct net_device_stats *niu_get_stats(struct net_device *dev)
5830 {
5831         struct niu *np = netdev_priv(dev);
5832
5833         niu_get_rx_stats(np);
5834         niu_get_tx_stats(np);
5835
5836         return &np->net_stats;
5837 }
5838
5839 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
5840 {
5841         int i;
5842
5843         for (i = 0; i < 16; i++)
5844                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
5845 }
5846
5847 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
5848 {
5849         int i;
5850
5851         for (i = 0; i < 16; i++)
5852                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
5853 }
5854
5855 static void niu_load_hash(struct niu *np, u16 *hash)
5856 {
5857         if (np->flags & NIU_FLAGS_XMAC)
5858                 niu_load_hash_xmac(np, hash);
5859         else
5860                 niu_load_hash_bmac(np, hash);
5861 }
5862
5863 static void niu_set_rx_mode(struct net_device *dev)
5864 {
5865         struct niu *np = netdev_priv(dev);
5866         int i, alt_cnt, err;
5867         struct dev_addr_list *addr;
5868         unsigned long flags;
5869         u16 hash[16] = { 0, };
5870
5871         spin_lock_irqsave(&np->lock, flags);
5872         niu_enable_rx_mac(np, 0);
5873
5874         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
5875         if (dev->flags & IFF_PROMISC)
5876                 np->flags |= NIU_FLAGS_PROMISC;
5877         if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
5878                 np->flags |= NIU_FLAGS_MCAST;
5879
5880         alt_cnt = dev->uc_count;
5881         if (alt_cnt > niu_num_alt_addr(np)) {
5882                 alt_cnt = 0;
5883                 np->flags |= NIU_FLAGS_PROMISC;
5884         }
5885
5886         if (alt_cnt) {
5887                 int index = 0;
5888
5889                 for (addr = dev->uc_list; addr; addr = addr->next) {
5890                         err = niu_set_alt_mac(np, index,
5891                                               addr->da_addr);
5892                         if (err)
5893                                 printk(KERN_WARNING PFX "%s: Error %d "
5894                                        "adding alt mac %d\n",
5895                                        dev->name, err, index);
5896                         err = niu_enable_alt_mac(np, index, 1);
5897                         if (err)
5898                                 printk(KERN_WARNING PFX "%s: Error %d "
5899                                        "enabling alt mac %d\n",
5900                                        dev->name, err, index);
5901
5902                         index++;
5903                 }
5904         } else {
5905                 int alt_start;
5906                 if (np->flags & NIU_FLAGS_XMAC)
5907                         alt_start = 0;
5908                 else
5909                         alt_start = 1;
5910                 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
5911                         err = niu_enable_alt_mac(np, i, 0);
5912                         if (err)
5913                                 printk(KERN_WARNING PFX "%s: Error %d "
5914                                        "disabling alt mac %d\n",
5915                                        dev->name, err, i);
5916                 }
5917         }
5918         if (dev->flags & IFF_ALLMULTI) {
5919                 for (i = 0; i < 16; i++)
5920                         hash[i] = 0xffff;
5921         } else if (dev->mc_count > 0) {
5922                 for (addr = dev->mc_list; addr; addr = addr->next) {
5923                         u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
5924
5925                         crc >>= 24;
5926                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
5927                 }
5928         }
5929
5930         if (np->flags & NIU_FLAGS_MCAST)
5931                 niu_load_hash(np, hash);
5932
5933         niu_enable_rx_mac(np, 1);
5934         spin_unlock_irqrestore(&np->lock, flags);
5935 }
5936
5937 static int niu_set_mac_addr(struct net_device *dev, void *p)
5938 {
5939         struct niu *np = netdev_priv(dev);
5940         struct sockaddr *addr = p;
5941         unsigned long flags;
5942
5943         if (!is_valid_ether_addr(addr->sa_data))
5944                 return -EINVAL;
5945
5946         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
5947
5948         if (!netif_running(dev))
5949                 return 0;
5950
5951         spin_lock_irqsave(&np->lock, flags);
5952         niu_enable_rx_mac(np, 0);
5953         niu_set_primary_mac(np, dev->dev_addr);
5954         niu_enable_rx_mac(np, 1);
5955         spin_unlock_irqrestore(&np->lock, flags);
5956
5957         return 0;
5958 }
5959
5960 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
5961 {
5962         return -EOPNOTSUPP;
5963 }
5964
5965 static void niu_netif_stop(struct niu *np)
5966 {
5967         np->dev->trans_start = jiffies; /* prevent tx timeout */
5968
5969         niu_disable_napi(np);
5970
5971         netif_tx_disable(np->dev);
5972 }
5973
5974 static void niu_netif_start(struct niu *np)
5975 {
5976         /* NOTE: unconditional netif_wake_queue is only appropriate
5977          * so long as all callers are assured to have free tx slots
5978          * (such as after niu_init_hw).
5979          */
5980         netif_tx_wake_all_queues(np->dev);
5981
5982         niu_enable_napi(np);
5983
5984         niu_enable_interrupts(np, 1);
5985 }
5986
5987 static void niu_reset_buffers(struct niu *np)
5988 {
5989         int i, j, k, err;
5990
5991         if (np->rx_rings) {
5992                 for (i = 0; i < np->num_rx_rings; i++) {
5993                         struct rx_ring_info *rp = &np->rx_rings[i];
5994
5995                         for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
5996                                 struct page *page;
5997
5998                                 page = rp->rxhash[j];
5999                                 while (page) {
6000                                         struct page *next =
6001                                                 (struct page *) page->mapping;
6002                                         u64 base = page->index;
6003                                         base = base >> RBR_DESCR_ADDR_SHIFT;
6004                                         rp->rbr[k++] = cpu_to_le32(base);
6005                                         page = next;
6006                                 }
6007                         }
6008                         for (; k < MAX_RBR_RING_SIZE; k++) {
6009                                 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6010                                 if (unlikely(err))
6011                                         break;
6012                         }
6013
6014                         rp->rbr_index = rp->rbr_table_size - 1;
6015                         rp->rcr_index = 0;
6016                         rp->rbr_pending = 0;
6017                         rp->rbr_refill_pending = 0;
6018                 }
6019         }
6020         if (np->tx_rings) {
6021                 for (i = 0; i < np->num_tx_rings; i++) {
6022                         struct tx_ring_info *rp = &np->tx_rings[i];
6023
6024                         for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6025                                 if (rp->tx_buffs[j].skb)
6026                                         (void) release_tx_packet(np, rp, j);
6027                         }
6028
6029                         rp->pending = MAX_TX_RING_SIZE;
6030                         rp->prod = 0;
6031                         rp->cons = 0;
6032                         rp->wrap_bit = 0;
6033                 }
6034         }
6035 }
6036
6037 static void niu_reset_task(struct work_struct *work)
6038 {
6039         struct niu *np = container_of(work, struct niu, reset_task);
6040         unsigned long flags;
6041         int err;
6042
6043         spin_lock_irqsave(&np->lock, flags);
6044         if (!netif_running(np->dev)) {
6045                 spin_unlock_irqrestore(&np->lock, flags);
6046                 return;
6047         }
6048
6049         spin_unlock_irqrestore(&np->lock, flags);
6050
6051         del_timer_sync(&np->timer);
6052
6053         niu_netif_stop(np);
6054
6055         spin_lock_irqsave(&np->lock, flags);
6056
6057         niu_stop_hw(np);
6058
6059         spin_unlock_irqrestore(&np->lock, flags);
6060
6061         niu_reset_buffers(np);
6062
6063         spin_lock_irqsave(&np->lock, flags);
6064
6065         err = niu_init_hw(np);
6066         if (!err) {
6067                 np->timer.expires = jiffies + HZ;
6068                 add_timer(&np->timer);
6069                 niu_netif_start(np);
6070         }
6071
6072         spin_unlock_irqrestore(&np->lock, flags);
6073 }
6074
6075 static void niu_tx_timeout(struct net_device *dev)
6076 {
6077         struct niu *np = netdev_priv(dev);
6078
6079         dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
6080                 dev->name);
6081
6082         schedule_work(&np->reset_task);
6083 }
6084
6085 static void niu_set_txd(struct tx_ring_info *rp, int index,
6086                         u64 mapping, u64 len, u64 mark,
6087                         u64 n_frags)
6088 {
6089         __le64 *desc = &rp->descr[index];
6090
6091         *desc = cpu_to_le64(mark |
6092                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6093                             (len << TX_DESC_TR_LEN_SHIFT) |
6094                             (mapping & TX_DESC_SAD));
6095 }
6096
6097 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6098                                 u64 pad_bytes, u64 len)
6099 {
6100         u16 eth_proto, eth_proto_inner;
6101         u64 csum_bits, l3off, ihl, ret;
6102         u8 ip_proto;
6103         int ipv6;
6104
6105         eth_proto = be16_to_cpu(ehdr->h_proto);
6106         eth_proto_inner = eth_proto;
6107         if (eth_proto == ETH_P_8021Q) {
6108                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6109                 __be16 val = vp->h_vlan_encapsulated_proto;
6110
6111                 eth_proto_inner = be16_to_cpu(val);
6112         }
6113
6114         ipv6 = ihl = 0;
6115         switch (skb->protocol) {
6116         case __constant_htons(ETH_P_IP):
6117                 ip_proto = ip_hdr(skb)->protocol;
6118                 ihl = ip_hdr(skb)->ihl;
6119                 break;
6120         case __constant_htons(ETH_P_IPV6):
6121                 ip_proto = ipv6_hdr(skb)->nexthdr;
6122                 ihl = (40 >> 2);
6123                 ipv6 = 1;
6124                 break;
6125         default:
6126                 ip_proto = ihl = 0;
6127                 break;
6128         }
6129
6130         csum_bits = TXHDR_CSUM_NONE;
6131         if (skb->ip_summed == CHECKSUM_PARTIAL) {
6132                 u64 start, stuff;
6133
6134                 csum_bits = (ip_proto == IPPROTO_TCP ?
6135                              TXHDR_CSUM_TCP :
6136                              (ip_proto == IPPROTO_UDP ?
6137                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6138
6139                 start = skb_transport_offset(skb) -
6140                         (pad_bytes + sizeof(struct tx_pkt_hdr));
6141                 stuff = start + skb->csum_offset;
6142
6143                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6144                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6145         }
6146
6147         l3off = skb_network_offset(skb) -
6148                 (pad_bytes + sizeof(struct tx_pkt_hdr));
6149
6150         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6151                (len << TXHDR_LEN_SHIFT) |
6152                ((l3off / 2) << TXHDR_L3START_SHIFT) |
6153                (ihl << TXHDR_IHL_SHIFT) |
6154                ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6155                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6156                (ipv6 ? TXHDR_IP_VER : 0) |
6157                csum_bits);
6158
6159         return ret;
6160 }
6161
6162 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
6163 {
6164         struct niu *np = netdev_priv(dev);
6165         unsigned long align, headroom;
6166         struct netdev_queue *txq;
6167         struct tx_ring_info *rp;
6168         struct tx_pkt_hdr *tp;
6169         unsigned int len, nfg;
6170         struct ethhdr *ehdr;
6171         int prod, i, tlen;
6172         u64 mapping, mrk;
6173
6174         i = skb_get_queue_mapping(skb);
6175         rp = &np->tx_rings[i];
6176         txq = netdev_get_tx_queue(dev, i);
6177
6178         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6179                 netif_tx_stop_queue(txq);
6180                 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
6181                         "queue awake!\n", dev->name);
6182                 rp->tx_errors++;
6183                 return NETDEV_TX_BUSY;
6184         }
6185
6186         if (skb->len < ETH_ZLEN) {
6187                 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6188
6189                 if (skb_pad(skb, pad_bytes))
6190                         goto out;
6191                 skb_put(skb, pad_bytes);
6192         }
6193
6194         len = sizeof(struct tx_pkt_hdr) + 15;
6195         if (skb_headroom(skb) < len) {
6196                 struct sk_buff *skb_new;
6197
6198                 skb_new = skb_realloc_headroom(skb, len);
6199                 if (!skb_new) {
6200                         rp->tx_errors++;
6201                         goto out_drop;
6202                 }
6203                 kfree_skb(skb);
6204                 skb = skb_new;
6205         } else
6206                 skb_orphan(skb);
6207
6208         align = ((unsigned long) skb->data & (16 - 1));
6209         headroom = align + sizeof(struct tx_pkt_hdr);
6210
6211         ehdr = (struct ethhdr *) skb->data;
6212         tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6213
6214         len = skb->len - sizeof(struct tx_pkt_hdr);
6215         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6216         tp->resv = 0;
6217
6218         len = skb_headlen(skb);
6219         mapping = np->ops->map_single(np->device, skb->data,
6220                                       len, DMA_TO_DEVICE);
6221
6222         prod = rp->prod;
6223
6224         rp->tx_buffs[prod].skb = skb;
6225         rp->tx_buffs[prod].mapping = mapping;
6226
6227         mrk = TX_DESC_SOP;
6228         if (++rp->mark_counter == rp->mark_freq) {
6229                 rp->mark_counter = 0;
6230                 mrk |= TX_DESC_MARK;
6231                 rp->mark_pending++;
6232         }
6233
6234         tlen = len;
6235         nfg = skb_shinfo(skb)->nr_frags;
6236         while (tlen > 0) {
6237                 tlen -= MAX_TX_DESC_LEN;
6238                 nfg++;
6239         }
6240
6241         while (len > 0) {
6242                 unsigned int this_len = len;
6243
6244                 if (this_len > MAX_TX_DESC_LEN)
6245                         this_len = MAX_TX_DESC_LEN;
6246
6247                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6248                 mrk = nfg = 0;
6249
6250                 prod = NEXT_TX(rp, prod);
6251                 mapping += this_len;
6252                 len -= this_len;
6253         }
6254
6255         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
6256                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6257
6258                 len = frag->size;
6259                 mapping = np->ops->map_page(np->device, frag->page,
6260                                             frag->page_offset, len,
6261                                             DMA_TO_DEVICE);
6262
6263                 rp->tx_buffs[prod].skb = NULL;
6264                 rp->tx_buffs[prod].mapping = mapping;
6265
6266                 niu_set_txd(rp, prod, mapping, len, 0, 0);
6267
6268                 prod = NEXT_TX(rp, prod);
6269         }
6270
6271         if (prod < rp->prod)
6272                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6273         rp->prod = prod;
6274
6275         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6276
6277         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6278                 netif_tx_stop_queue(txq);
6279                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6280                         netif_tx_wake_queue(txq);
6281         }
6282
6283         dev->trans_start = jiffies;
6284
6285 out:
6286         return NETDEV_TX_OK;
6287
6288 out_drop:
6289         rp->tx_errors++;
6290         kfree_skb(skb);
6291         goto out;
6292 }
6293
6294 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6295 {
6296         struct niu *np = netdev_priv(dev);
6297         int err, orig_jumbo, new_jumbo;
6298
6299         if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6300                 return -EINVAL;
6301
6302         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6303         new_jumbo = (new_mtu > ETH_DATA_LEN);
6304
6305         dev->mtu = new_mtu;
6306
6307         if (!netif_running(dev) ||
6308             (orig_jumbo == new_jumbo))
6309                 return 0;
6310
6311         niu_full_shutdown(np, dev);
6312
6313         niu_free_channels(np);
6314
6315         niu_enable_napi(np);
6316
6317         err = niu_alloc_channels(np);
6318         if (err)
6319                 return err;
6320
6321         spin_lock_irq(&np->lock);
6322
6323         err = niu_init_hw(np);
6324         if (!err) {
6325                 init_timer(&np->timer);
6326                 np->timer.expires = jiffies + HZ;
6327                 np->timer.data = (unsigned long) np;
6328                 np->timer.function = niu_timer;
6329
6330                 err = niu_enable_interrupts(np, 1);
6331                 if (err)
6332                         niu_stop_hw(np);
6333         }
6334
6335         spin_unlock_irq(&np->lock);
6336
6337         if (!err) {
6338                 netif_tx_start_all_queues(dev);
6339                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6340                         netif_carrier_on(dev);
6341
6342                 add_timer(&np->timer);
6343         }
6344
6345         return err;
6346 }
6347
6348 static void niu_get_drvinfo(struct net_device *dev,
6349                             struct ethtool_drvinfo *info)
6350 {
6351         struct niu *np = netdev_priv(dev);
6352         struct niu_vpd *vpd = &np->vpd;
6353
6354         strcpy(info->driver, DRV_MODULE_NAME);
6355         strcpy(info->version, DRV_MODULE_VERSION);
6356         sprintf(info->fw_version, "%d.%d",
6357                 vpd->fcode_major, vpd->fcode_minor);
6358         if (np->parent->plat_type != PLAT_TYPE_NIU)
6359                 strcpy(info->bus_info, pci_name(np->pdev));
6360 }
6361
6362 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6363 {
6364         struct niu *np = netdev_priv(dev);
6365         struct niu_link_config *lp;
6366
6367         lp = &np->link_config;
6368
6369         memset(cmd, 0, sizeof(*cmd));
6370         cmd->phy_address = np->phy_addr;
6371         cmd->supported = lp->supported;
6372         cmd->advertising = lp->advertising;
6373         cmd->autoneg = lp->autoneg;
6374         cmd->speed = lp->active_speed;
6375         cmd->duplex = lp->active_duplex;
6376
6377         return 0;
6378 }
6379
6380 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6381 {
6382         return -EINVAL;
6383 }
6384
6385 static u32 niu_get_msglevel(struct net_device *dev)
6386 {
6387         struct niu *np = netdev_priv(dev);
6388         return np->msg_enable;
6389 }
6390
6391 static void niu_set_msglevel(struct net_device *dev, u32 value)
6392 {
6393         struct niu *np = netdev_priv(dev);
6394         np->msg_enable = value;
6395 }
6396
6397 static int niu_get_eeprom_len(struct net_device *dev)
6398 {
6399         struct niu *np = netdev_priv(dev);
6400
6401         return np->eeprom_len;
6402 }
6403
6404 static int niu_get_eeprom(struct net_device *dev,
6405                           struct ethtool_eeprom *eeprom, u8 *data)
6406 {
6407         struct niu *np = netdev_priv(dev);
6408         u32 offset, len, val;
6409
6410         offset = eeprom->offset;
6411         len = eeprom->len;
6412
6413         if (offset + len < offset)
6414                 return -EINVAL;
6415         if (offset >= np->eeprom_len)
6416                 return -EINVAL;
6417         if (offset + len > np->eeprom_len)
6418                 len = eeprom->len = np->eeprom_len - offset;
6419
6420         if (offset & 3) {
6421                 u32 b_offset, b_count;
6422
6423                 b_offset = offset & 3;
6424                 b_count = 4 - b_offset;
6425                 if (b_count > len)
6426                         b_count = len;
6427
6428                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6429                 memcpy(data, ((char *)&val) + b_offset, b_count);
6430                 data += b_count;
6431                 len -= b_count;
6432                 offset += b_count;
6433         }
6434         while (len >= 4) {
6435                 val = nr64(ESPC_NCR(offset / 4));
6436                 memcpy(data, &val, 4);
6437                 data += 4;
6438                 len -= 4;
6439                 offset += 4;
6440         }
6441         if (len) {
6442                 val = nr64(ESPC_NCR(offset / 4));
6443                 memcpy(data, &val, len);
6444         }
6445         return 0;
6446 }
6447
6448 static int niu_ethflow_to_class(int flow_type, u64 *class)
6449 {
6450         switch (flow_type) {
6451         case TCP_V4_FLOW:
6452                 *class = CLASS_CODE_TCP_IPV4;
6453                 break;
6454         case UDP_V4_FLOW:
6455                 *class = CLASS_CODE_UDP_IPV4;
6456                 break;