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ath9k: uses/needs led_classdev_[un]register
[linux-2.6/zen-sources.git] / drivers / net / niu.c
blobe4765b713abab5afae02980bf6af52d8da8cb8b0
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_task(struct work_struct *work)
5988 {
5989 struct niu *np = container_of(work, struct niu, reset_task);
5990 unsigned long flags;
5991 int err;
5992
5993 spin_lock_irqsave(&np->lock, flags);
5994 if (!netif_running(np->dev)) {
5995 spin_unlock_irqrestore(&np->lock, flags);
5996 return;
5997 }
5998
5999 spin_unlock_irqrestore(&np->lock, flags);
6000
6001 del_timer_sync(&np->timer);
6002
6003 niu_netif_stop(np);
6004
6005 spin_lock_irqsave(&np->lock, flags);
6006
6007 niu_stop_hw(np);
6008
6009 err = niu_init_hw(np);
6010 if (!err) {
6011 np->timer.expires = jiffies + HZ;
6012 add_timer(&np->timer);
6013 niu_netif_start(np);
6014 }
6015
6016 spin_unlock_irqrestore(&np->lock, flags);
6017 }
6018
6019 static void niu_tx_timeout(struct net_device *dev)
6020 {
6021 struct niu *np = netdev_priv(dev);
6022
6023 dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
6024 dev->name);
6025
6026 schedule_work(&np->reset_task);
6027 }
6028
6029 static void niu_set_txd(struct tx_ring_info *rp, int index,
6030 u64 mapping, u64 len, u64 mark,
6031 u64 n_frags)
6032 {
6033 __le64 *desc = &rp->descr[index];
6034
6035 *desc = cpu_to_le64(mark |
6036 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6037 (len << TX_DESC_TR_LEN_SHIFT) |
6038 (mapping & TX_DESC_SAD));
6039 }
6040
6041 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6042 u64 pad_bytes, u64 len)
6043 {
6044 u16 eth_proto, eth_proto_inner;
6045 u64 csum_bits, l3off, ihl, ret;
6046 u8 ip_proto;
6047 int ipv6;
6048
6049 eth_proto = be16_to_cpu(ehdr->h_proto);
6050 eth_proto_inner = eth_proto;
6051 if (eth_proto == ETH_P_8021Q) {
6052 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6053 __be16 val = vp->h_vlan_encapsulated_proto;
6054
6055 eth_proto_inner = be16_to_cpu(val);
6056 }
6057
6058 ipv6 = ihl = 0;
6059 switch (skb->protocol) {
6060 case __constant_htons(ETH_P_IP):
6061 ip_proto = ip_hdr(skb)->protocol;
6062 ihl = ip_hdr(skb)->ihl;
6063 break;
6064 case __constant_htons(ETH_P_IPV6):
6065 ip_proto = ipv6_hdr(skb)->nexthdr;
6066 ihl = (40 >> 2);
6067 ipv6 = 1;
6068 break;
6069 default:
6070 ip_proto = ihl = 0;
6071 break;
6072 }
6073
6074 csum_bits = TXHDR_CSUM_NONE;
6075 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6076 u64 start, stuff;
6077
6078 csum_bits = (ip_proto == IPPROTO_TCP ?
6079 TXHDR_CSUM_TCP :
6080 (ip_proto == IPPROTO_UDP ?
6081 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6082
6083 start = skb_transport_offset(skb) -
6084 (pad_bytes + sizeof(struct tx_pkt_hdr));
6085 stuff = start + skb->csum_offset;
6086
6087 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6088 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6089 }
6090
6091 l3off = skb_network_offset(skb) -
6092 (pad_bytes + sizeof(struct tx_pkt_hdr));
6093
6094 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6095 (len << TXHDR_LEN_SHIFT) |
6096 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6097 (ihl << TXHDR_IHL_SHIFT) |
6098 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6099 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6100 (ipv6 ? TXHDR_IP_VER : 0) |
6101 csum_bits);
6102
6103 return ret;
6104 }
6105
6106 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
6107 {
6108 struct niu *np = netdev_priv(dev);
6109 unsigned long align, headroom;
6110 struct netdev_queue *txq;
6111 struct tx_ring_info *rp;
6112 struct tx_pkt_hdr *tp;
6113 unsigned int len, nfg;
6114 struct ethhdr *ehdr;
6115 int prod, i, tlen;
6116 u64 mapping, mrk;
6117
6118 i = skb_get_queue_mapping(skb);
6119 rp = &np->tx_rings[i];
6120 txq = netdev_get_tx_queue(dev, i);
6121
6122 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6123 netif_tx_stop_queue(txq);
6124 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
6125 "queue awake!\n", dev->name);
6126 rp->tx_errors++;
6127 return NETDEV_TX_BUSY;
6128 }
6129
6130 if (skb->len < ETH_ZLEN) {
6131 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6132
6133 if (skb_pad(skb, pad_bytes))
6134 goto out;
6135 skb_put(skb, pad_bytes);
6136 }
6137
6138 len = sizeof(struct tx_pkt_hdr) + 15;
6139 if (skb_headroom(skb) < len) {
6140 struct sk_buff *skb_new;
6141
6142 skb_new = skb_realloc_headroom(skb, len);
6143 if (!skb_new) {
6144 rp->tx_errors++;
6145 goto out_drop;
6146 }
6147 kfree_skb(skb);
6148 skb = skb_new;
6149 } else
6150 skb_orphan(skb);
6151
6152 align = ((unsigned long) skb->data & (16 - 1));
6153 headroom = align + sizeof(struct tx_pkt_hdr);
6154
6155 ehdr = (struct ethhdr *) skb->data;
6156 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6157
6158 len = skb->len - sizeof(struct tx_pkt_hdr);
6159 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6160 tp->resv = 0;
6161
6162 len = skb_headlen(skb);
6163 mapping = np->ops->map_single(np->device, skb->data,
6164 len, DMA_TO_DEVICE);
6165
6166 prod = rp->prod;
6167
6168 rp->tx_buffs[prod].skb = skb;
6169 rp->tx_buffs[prod].mapping = mapping;
6170
6171 mrk = TX_DESC_SOP;
6172 if (++rp->mark_counter == rp->mark_freq) {
6173 rp->mark_counter = 0;
6174 mrk |= TX_DESC_MARK;
6175 rp->mark_pending++;
6176 }
6177
6178 tlen = len;
6179 nfg = skb_shinfo(skb)->nr_frags;
6180 while (tlen > 0) {
6181 tlen -= MAX_TX_DESC_LEN;
6182 nfg++;
6183 }
6184
6185 while (len > 0) {
6186 unsigned int this_len = len;
6187
6188 if (this_len > MAX_TX_DESC_LEN)
6189 this_len = MAX_TX_DESC_LEN;
6190
6191 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6192 mrk = nfg = 0;
6193
6194 prod = NEXT_TX(rp, prod);
6195 mapping += this_len;
6196 len -= this_len;
6197 }
6198
6199 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6200 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6201
6202 len = frag->size;
6203 mapping = np->ops->map_page(np->device, frag->page,
6204 frag->page_offset, len,
6205 DMA_TO_DEVICE);
6206
6207 rp->tx_buffs[prod].skb = NULL;
6208 rp->tx_buffs[prod].mapping = mapping;
6209
6210 niu_set_txd(rp, prod, mapping, len, 0, 0);
6211
6212 prod = NEXT_TX(rp, prod);
6213 }
6214
6215 if (prod < rp->prod)
6216 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6217 rp->prod = prod;
6218
6219 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6220
6221 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6222 netif_tx_stop_queue(txq);
6223 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6224 netif_tx_wake_queue(txq);
6225 }
6226
6227 dev->trans_start = jiffies;
6228
6229 out:
6230 return NETDEV_TX_OK;
6231
6232 out_drop:
6233 rp->tx_errors++;
6234 kfree_skb(skb);
6235 goto out;
6236 }
6237
6238 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6239 {
6240 struct niu *np = netdev_priv(dev);
6241 int err, orig_jumbo, new_jumbo;
6242
6243 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6244 return -EINVAL;
6245
6246 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6247 new_jumbo = (new_mtu > ETH_DATA_LEN);
6248
6249 dev->mtu = new_mtu;
6250
6251 if (!netif_running(dev) ||
6252 (orig_jumbo == new_jumbo))
6253 return 0;
6254
6255 niu_full_shutdown(np, dev);
6256
6257 niu_free_channels(np);
6258
6259 niu_enable_napi(np);
6260
6261 err = niu_alloc_channels(np);
6262 if (err)
6263 return err;
6264
6265 spin_lock_irq(&np->lock);
6266
6267 err = niu_init_hw(np);
6268 if (!err) {
6269 init_timer(&np->timer);
6270 np->timer.expires = jiffies + HZ;
6271 np->timer.data = (unsigned long) np;
6272 np->timer.function = niu_timer;
6273
6274 err = niu_enable_interrupts(np, 1);
6275 if (err)
6276 niu_stop_hw(np);
6277 }
6278
6279 spin_unlock_irq(&np->lock);
6280
6281 if (!err) {
6282 netif_tx_start_all_queues(dev);
6283 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6284 netif_carrier_on(dev);
6285
6286 add_timer(&np->timer);
6287 }
6288
6289 return err;
6290 }
6291
6292 static void niu_get_drvinfo(struct net_device *dev,
6293 struct ethtool_drvinfo *info)
6294 {
6295 struct niu *np = netdev_priv(dev);
6296 struct niu_vpd *vpd = &np->vpd;
6297
6298 strcpy(info->driver, DRV_MODULE_NAME);
6299 strcpy(info->version, DRV_MODULE_VERSION);
6300 sprintf(info->fw_version, "%d.%d",
6301 vpd->fcode_major, vpd->fcode_minor);
6302 if (np->parent->plat_type != PLAT_TYPE_NIU)
6303 strcpy(info->bus_info, pci_name(np->pdev));
6304 }
6305
6306 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6307 {
6308 struct niu *np = netdev_priv(dev);
6309 struct niu_link_config *lp;
6310
6311 lp = &np->link_config;
6312
6313 memset(cmd, 0, sizeof(*cmd));
6314 cmd->phy_address = np->phy_addr;
6315 cmd->supported = lp->supported;
6316 cmd->advertising = lp->advertising;
6317 cmd->autoneg = lp->autoneg;
6318 cmd->speed = lp->active_speed;
6319 cmd->duplex = lp->active_duplex;
6320
6321 return 0;
6322 }
6323
6324 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6325 {
6326 return -EINVAL;
6327 }
6328
6329 static u32 niu_get_msglevel(struct net_device *dev)
6330 {
6331 struct niu *np = netdev_priv(dev);
6332 return np->msg_enable;
6333 }
6334
6335 static void niu_set_msglevel(struct net_device *dev, u32 value)
6336 {
6337 struct niu *np = netdev_priv(dev);
6338 np->msg_enable = value;
6339 }
6340
6341 static int niu_get_eeprom_len(struct net_device *dev)
6342 {
6343 struct niu *np = netdev_priv(dev);
6344
6345 return np->eeprom_len;
6346 }
6347
6348 static int niu_get_eeprom(struct net_device *dev,
6349 struct ethtool_eeprom *eeprom, u8 *data)
6350 {
6351 struct niu *np = netdev_priv(dev);
6352 u32 offset, len, val;
6353
6354 offset = eeprom->offset;
6355 len = eeprom->len;
6356
6357 if (offset + len < offset)
6358 return -EINVAL;
6359 if (offset >= np->eeprom_len)
6360 return -EINVAL;
6361 if (offset + len > np->eeprom_len)
6362 len = eeprom->len = np->eeprom_len - offset;
6363
6364 if (offset & 3) {
6365 u32 b_offset, b_count;
6366
6367 b_offset = offset & 3;
6368 b_count = 4 - b_offset;
6369 if (b_count > len)
6370 b_count = len;
6371
6372 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6373 memcpy(data, ((char *)&val) + b_offset, b_count);
6374 data += b_count;
6375 len -= b_count;
6376 offset += b_count;
6377 }
6378 while (len >= 4) {
6379 val = nr64(ESPC_NCR(offset / 4));
6380 memcpy(data, &val, 4);
6381 data += 4;
6382 len -= 4;
6383 offset += 4;
6384 }
6385 if (len) {
6386 val = nr64(ESPC_NCR(offset / 4));
6387 memcpy(data, &val, len);
6388 }
6389 return 0;
6390 }
6391
6392 static int niu_ethflow_to_class(int flow_type, u64 *class)
6393 {
6394 switch (flow_type) {
6395 case TCP_V4_FLOW:
6396 *class = CLASS_CODE_TCP_IPV4;
6397 break;
6398 case UDP_V4_FLOW:
6399 *class = CLASS_CODE_UDP_IPV4;
6400 break;
6401 case AH_ESP_V4_FLOW:
6402 *class = CLASS_CODE_AH_ESP_IPV4;
6403 break;
6404 case SCTP_V4_FLOW:
6405 *class = CLASS_CODE_SCTP_IPV4;
6406 break;
6407 case TCP_V6_FLOW:
6408 *class = CLASS_CODE_TCP_IPV6;
6409 break;
6410 case UDP_V6_FLOW:
6411 *class = CLASS_CODE_UDP_IPV6;
6412 break;
6413 case AH_ESP_V6_FLOW:
6414 *class = CLASS_CODE_AH_ESP_IPV6;
6415 break;
6416 case SCTP_V6_FLOW:
6417 *class = CLASS_CODE_SCTP_IPV6;
6418 break;
6419 default:
6420 return 0;
6421 }
6422
6423 return 1;
6424 }
6425
6426 static u64 niu_flowkey_to_ethflow(u64 flow_key)
6427 {
6428 u64 ethflow = 0;
6429
6430 if (flow_key & FLOW_KEY_PORT)
6431 ethflow |= RXH_DEV_PORT;
6432 if (flow_key & FLOW_KEY_L2DA)
6433 ethflow |= RXH_L2DA;
6434 if (flow_key & FLOW_KEY_VLAN)
6435 ethflow |= RXH_VLAN;
6436 if (flow_key & FLOW_KEY_IPSA)
6437 ethflow |= RXH_IP_SRC;
6438 if (flow_key & FLOW_KEY_IPDA)
6439 ethflow |= RXH_IP_DST;
6440 if (flow_key & FLOW_KEY_PROTO)
6441 ethflow |= RXH_L3_PROTO;
6442 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
6443 ethflow |= RXH_L4_B_0_1;
6444 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
6445 ethflow |= RXH_L4_B_2_3;
6446
6447 return ethflow;
6448
6449 }
6450
6451 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
6452 {
6453 u64 key = 0;
6454
6455 if (ethflow & RXH_DEV_PORT)
6456 key |= FLOW_KEY_PORT;
6457 if (ethflow & RXH_L2DA)
6458 key |= FLOW_KEY_L2DA;
6459 if (ethflow & RXH_VLAN)
6460 key |= FLOW_KEY_VLAN;
6461 if (ethflow & RXH_IP_SRC)
6462 key |= FLOW_KEY_IPSA;
6463 if (ethflow & RXH_IP_DST)
6464 key |= FLOW_KEY_IPDA;
6465 if (ethflow & RXH_L3_PROTO)
6466 key |= FLOW_KEY_PROTO;
6467 if (ethflow & RXH_L4_B_0_1)
6468 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
6469 if (ethflow & RXH_L4_B_2_3)
6470 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
6471
6472 *flow_key = key;
6473
6474 return 1;
6475
6476 }
6477
6478 static int niu_get_hash_opts(struct net_device *dev, struct ethtool_rxnfc *cmd)
6479 {
6480 struct niu *np = netdev_priv(dev);
6481 u64 class;
6482
6483 cmd->data = 0;
6484
6485 if (!niu_ethflow_to_class(cmd->flow_type, &class))
6486 return -EINVAL;
6487
6488 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
6489 TCAM_KEY_DISC)
6490 cmd->data = RXH_DISCARD;
6491 else
6492
6493 cmd->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
6494 CLASS_CODE_USER_PROG1]);
6495 return 0;
6496 }
6497
6498 static int niu_set_hash_opts(struct net_device *dev, struct ethtool_rxnfc *cmd)
6499 {
6500 struct niu *np = netdev_priv(dev);
6501 u64 class;
6502 u64 flow_key = 0;
6503 unsigned long flags;
6504
6505 if (!niu_ethflow_to_class(cmd->flow_type, &class))
6506 return -EINVAL;
6507
6508 if (class < CLASS_CODE_USER_PROG1 ||
6509 class > CLASS_CODE_SCTP_IPV6)
6510 return -EINVAL;
6511
6512 if (cmd->data & RXH_DISCARD) {
6513 niu_lock_parent(np, flags);
6514 flow_key = np->parent->tcam_key[class -
6515 CLASS_CODE_USER_PROG1];
6516 flow_key |= TCAM_KEY_DISC;
6517 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
6518 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
6519 niu_unlock_parent(np, flags);
6520 return 0;
6521 } else {
6522 /* Discard was set before, but is not set now */
6523 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
6524 TCAM_KEY_DISC) {
6525 niu_lock_parent(np, flags);
6526 flow_key = np->parent->tcam_key[class -
6527 CLASS_CODE_USER_PROG1];
6528 flow_key &= ~TCAM_KEY_DISC;
6529 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
6530 flow_key);
6531 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
6532 flow_key;
6533 niu_unlock_parent(np, flags);
6534 }
6535 }
6536
6537 if (!niu_ethflow_to_flowkey(cmd->data, &flow_key))
6538 return -EINVAL;
6539
6540 niu_lock_parent(np, flags);
6541 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
6542 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
6543 niu_unlock_parent(np, flags);
6544
6545 return 0;
6546 }
6547
6548 static const struct {
6549 const char string[ETH_GSTRING_LEN];
6550 } niu_xmac_stat_keys[] = {
6551 { "tx_frames" },
6552 { "tx_bytes" },
6553 { "tx_fifo_errors" },
6554 { "tx_overflow_errors" },
6555 { "tx_max_pkt_size_errors" },
6556 { "tx_underflow_errors" },
6557 { "rx_local_faults" },
6558 { "rx_remote_faults" },
6559 { "rx_link_faults" },
6560 { "rx_align_errors" },
6561 { "rx_frags" },
6562 { "rx_mcasts" },
6563 { "rx_bcasts" },
6564 { "rx_hist_cnt1" },
6565 { "rx_hist_cnt2" },
6566 { "rx_hist_cnt3" },
6567 { "rx_hist_cnt4" },
6568 { "rx_hist_cnt5" },
6569 { "rx_hist_cnt6" },
6570 { "rx_hist_cnt7" },
6571 { "rx_octets" },
6572 { "rx_code_violations" },
6573 { "rx_len_errors" },
6574 { "rx_crc_errors" },
6575 { "rx_underflows" },
6576 { "rx_overflows" },
6577 { "pause_off_state" },
6578 { "pause_on_state" },
6579 { "pause_received" },
6580 };
6581
6582 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
6583
6584 static const struct {
6585 const char string[ETH_GSTRING_LEN];
6586 } niu_bmac_stat_keys[] = {
6587 { "tx_underflow_errors" },
6588 { "tx_max_pkt_size_errors" },
6589 { "tx_bytes" },
6590 { "tx_frames" },
6591 { "rx_overflows" },
6592 { "rx_frames" },
6593 { "rx_align_errors" },
6594 { "rx_crc_errors" },
6595 { "rx_len_errors" },
6596 { "pause_off_state" },
6597 { "pause_on_state" },
6598 { "pause_received" },
6599 };
6600
6601 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
6602
6603 static const struct {
6604 const char string[ETH_GSTRING_LEN];
6605 } niu_rxchan_stat_keys[] = {
6606 { "rx_channel" },
6607 { "rx_packets" },
6608 { "rx_bytes" },
6609 { "rx_dropped" },
6610 { "rx_errors" },
6611 };
6612
6613 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
6614
6615 static const struct {
6616 const char string[ETH_GSTRING_LEN];
6617 } niu_txchan_stat_keys[] = {
6618 { "tx_channel" },
6619 { "tx_packets" },
6620 { "tx_bytes" },
6621 { "tx_errors" },
6622 };
6623
6624 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
6625
6626 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6627 {
6628 struct niu *np = netdev_priv(dev);
6629 int i;
6630
6631 if (stringset != ETH_SS_STATS)
6632 return;
6633
6634 if (np->flags & NIU_FLAGS_XMAC) {
6635 memcpy(data, niu_xmac_stat_keys,
6636 sizeof(niu_xmac_stat_keys));
6637 data += sizeof(niu_xmac_stat_keys);
6638 } else {
6639 memcpy(data, niu_bmac_stat_keys,
6640 sizeof(niu_bmac_stat_keys));
6641 data += sizeof(niu_bmac_stat_keys);
6642 }
6643 for (i = 0; i < np->num_rx_rings; i++) {
6644 memcpy(data, niu_rxchan_stat_keys,
6645 sizeof(niu_rxchan_stat_keys));
6646 data += sizeof(niu_rxchan_stat_keys);
6647 }
6648 for (i = 0; i < np->num_tx_rings; i++) {
6649 memcpy(data, niu_txchan_stat_keys,
6650 sizeof(niu_txchan_stat_keys));
6651 data += sizeof(niu_txchan_stat_keys);
6652 }
6653 }
6654
6655 static int niu_get_stats_count(struct net_device *dev)
6656 {
6657 struct niu *np = netdev_priv(dev);
6658
6659 return ((np->flags & NIU_FLAGS_XMAC ?
6660 NUM_XMAC_STAT_KEYS :
6661 NUM_BMAC_STAT_KEYS) +
6662 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
6663 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
6664 }
6665
6666 static void niu_get_ethtool_stats(struct net_device *dev,
6667 struct ethtool_stats *stats, u64 *data)
6668 {
6669 struct niu *np = netdev_priv(dev);
6670 int i;
6671
6672 niu_sync_mac_stats(np);
6673 if (np->flags & NIU_FLAGS_XMAC) {
6674 memcpy(data, &np->mac_stats.xmac,
6675 sizeof(struct niu_xmac_stats));
6676 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
6677 } else {
6678 memcpy(data, &np->mac_stats.bmac,
6679 sizeof(struct niu_bmac_stats));
6680 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
6681 }
6682 for (i = 0; i < np->num_rx_rings; i++) {
6683 struct rx_ring_info *rp = &np->rx_rings[i];
6684
6685 data[0] = rp->rx_channel;
6686 data[1] = rp->rx_packets;
6687 data[2] = rp->rx_bytes;
6688 data[3] = rp->rx_dropped;
6689 data[4] = rp->rx_errors;
6690 data += 5;
6691 }
6692 for (i = 0; i < np->num_tx_rings; i++) {
6693 struct tx_ring_info *rp = &np->tx_rings[i];
6694
6695 data[0] = rp->tx_channel;
6696 data[1] = rp->tx_packets;
6697 data[2] = rp->tx_bytes;
6698 data[3] = rp->tx_errors;
6699 data += 4;
6700 }
6701 }
6702
6703 static u64 niu_led_state_save(struct niu *np)
6704 {
6705 if (np->flags & NIU_FLAGS_XMAC)
6706 return nr64_mac(XMAC_CONFIG);
6707 else
6708 return nr64_mac(BMAC_XIF_CONFIG);
6709 }
6710
6711 static void niu_led_state_restore(struct niu *np, u64 val)
6712 {
6713 if (np->flags & NIU_FLAGS_XMAC)
6714 nw64_mac(XMAC_CONFIG, val);
6715 else
6716 nw64_mac(BMAC_XIF_CONFIG, val);
6717 }
6718
6719 static void niu_force_led(struct niu *np, int on)
6720 {
6721 u64 val, reg, bit;
6722
6723 if (np->flags & NIU_FLAGS_XMAC) {
6724 reg = XMAC_CONFIG;
6725 bit = XMAC_CONFIG_FORCE_LED_ON;
6726 } else {
6727 reg = BMAC_XIF_CONFIG;
6728 bit = BMAC_XIF_CONFIG_LINK_LED;
6729 }
6730
6731 val = nr64_mac(reg);
6732 if (on)
6733 val |= bit;
6734 else
6735 val &= ~bit;
6736 nw64_mac(reg, val);
6737 }
6738
6739 static int niu_phys_id(struct net_device *dev, u32 data)
6740 {
6741 struct niu *np = netdev_priv(dev);
6742 u64 orig_led_state;
6743 int i;
6744
6745 if (!netif_running(dev))
6746 return -EAGAIN;
6747
6748 if (data == 0)
6749 data = 2;
6750
6751 orig_led_state = niu_led_state_save(np);
6752 for (i = 0; i < (data * 2); i++) {
6753 int on = ((i % 2) == 0);
6754
6755 niu_force_led(np, on);
6756
6757 if (msleep_interruptible(500))
6758 break;
6759 }
6760 niu_led_state_restore(np, orig_led_state);
6761
6762 return 0;
6763 }
6764
6765 static const struct ethtool_ops niu_ethtool_ops = {
6766 .get_drvinfo = niu_get_drvinfo,
6767 .get_link = ethtool_op_get_link,
6768 .get_msglevel = niu_get_msglevel,
6769 .set_msglevel = niu_set_msglevel,
6770 .get_eeprom_len = niu_get_eeprom_len,
6771 .get_eeprom = niu_get_eeprom,
6772 .get_settings = niu_get_settings,
6773 .set_settings = niu_set_settings,
6774 .get_strings = niu_get_strings,
6775 .get_stats_count = niu_get_stats_count,
6776 .get_ethtool_stats = niu_get_ethtool_stats,
6777 .phys_id = niu_phys_id,
6778 .get_rxhash = niu_get_hash_opts,
6779 .set_rxhash = niu_set_hash_opts,
6780 };
6781
6782 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
6783 int ldg, int ldn)
6784 {
6785 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
6786 return -EINVAL;
6787 if (ldn < 0 || ldn > LDN_MAX)
6788 return -EINVAL;
6789
6790 parent->ldg_map[ldn] = ldg;
6791
6792 if (np->parent->plat_type == PLAT_TYPE_NIU) {
6793 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
6794 * the firmware, and we're not supposed to change them.
6795 * Validate the mapping, because if it's wrong we probably
6796 * won't get any interrupts and that's painful to debug.
6797 */
6798 if (nr64(LDG_NUM(ldn)) != ldg) {
6799 dev_err(np->device, PFX "Port %u, mis-matched "
6800 "LDG assignment "
6801 "for ldn %d, should be %d is %llu\n",
6802 np->port, ldn, ldg,
6803 (unsigned long long) nr64(LDG_NUM(ldn)));
6804 return -EINVAL;
6805 }
6806 } else
6807 nw64(LDG_NUM(ldn), ldg);
6808
6809 return 0;
6810 }
6811
6812 static int niu_set_ldg_timer_res(struct niu *np, int res)
6813 {
6814 if (res < 0 || res > LDG_TIMER_RES_VAL)
6815 return -EINVAL;
6816
6817
6818 nw64(LDG_TIMER_RES, res);
6819
6820 return 0;
6821 }
6822
6823 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
6824 {
6825 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
6826 (func < 0 || func > 3) ||
6827 (vector < 0 || vector > 0x1f))
6828 return -EINVAL;
6829
6830 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
6831
6832 return 0;
6833 }
6834
6835 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
6836 {
6837 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
6838 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
6839 int limit;
6840
6841 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
6842 return -EINVAL;
6843
6844 frame = frame_base;
6845 nw64(ESPC_PIO_STAT, frame);
6846 limit = 64;
6847 do {
6848 udelay(5);
6849 frame = nr64(ESPC_PIO_STAT);
6850 if (frame & ESPC_PIO_STAT_READ_END)
6851 break;
6852 } while (limit--);
6853 if (!(frame & ESPC_PIO_STAT_READ_END)) {
6854 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
6855 (unsigned long long) frame);
6856 return -ENODEV;
6857 }
6858
6859 frame = frame_base;
6860 nw64(ESPC_PIO_STAT, frame);
6861 limit = 64;
6862 do {
6863 udelay(5);
6864 frame = nr64(ESPC_PIO_STAT);
6865 if (frame & ESPC_PIO_STAT_READ_END)
6866 break;
6867 } while (limit--);
6868 if (!(frame & ESPC_PIO_STAT_READ_END)) {
6869 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
6870 (unsigned long long) frame);
6871 return -ENODEV;
6872 }
6873
6874 frame = nr64(ESPC_PIO_STAT);
6875 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
6876 }
6877
6878 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
6879 {
6880 int err = niu_pci_eeprom_read(np, off);
6881 u16 val;
6882
6883 if (err < 0)
6884 return err;
6885 val = (err << 8);
6886 err = niu_pci_eeprom_read(np, off + 1);
6887 if (err < 0)
6888 return err;
6889 val |= (err & 0xff);
6890
6891 return val;
6892 }
6893
6894 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
6895 {
6896 int err = niu_pci_eeprom_read(np, off);
6897 u16 val;
6898
6899 if (err < 0)
6900 return err;
6901
6902 val = (err & 0xff);
6903 err = niu_pci_eeprom_read(np, off + 1);
6904 if (err < 0)
6905 return err;
6906
6907 val |= (err & 0xff) << 8;
6908
6909 return val;
6910 }
6911
6912 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
6913 u32 off,
6914 char *namebuf,
6915 int namebuf_len)
6916 {
6917 int i;
6918
6919 for (i = 0; i < namebuf_len; i++) {
6920 int err = niu_pci_eeprom_read(np, off + i);
6921 if (err < 0)
6922 return err;
6923 *namebuf++ = err;
6924 if (!err)
6925 break;
6926 }
6927 if (i >= namebuf_len)
6928 return -EINVAL;
6929
6930 return i + 1;
6931 }
6932
6933 static void __devinit niu_vpd_parse_version(struct niu *np)
6934 {
6935 struct niu_vpd *vpd = &np->vpd;
6936 int len = strlen(vpd->version) + 1;
6937 const char *s = vpd->version;
6938 int i;
6939
6940 for (i = 0; i < len - 5; i++) {
6941 if (!strncmp(s + i, "FCode ", 5))
6942 break;
6943 }
6944 if (i >= len - 5)
6945 return;
6946
6947 s += i + 5;
6948 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
6949
6950 niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
6951 vpd->fcode_major, vpd->fcode_minor);
6952 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
6953 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
6954 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
6955 np->flags |= NIU_FLAGS_VPD_VALID;
6956 }
6957
6958 /* ESPC_PIO_EN_ENABLE must be set */
6959 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
6960 u32 start, u32 end)
6961 {
6962 unsigned int found_mask = 0;
6963 #define FOUND_MASK_MODEL 0x00000001
6964 #define FOUND_MASK_BMODEL 0x00000002
6965 #define FOUND_MASK_VERS 0x00000004
6966 #define FOUND_MASK_MAC 0x00000008
6967 #define FOUND_MASK_NMAC 0x00000010
6968 #define FOUND_MASK_PHY 0x00000020
6969 #define FOUND_MASK_ALL 0x0000003f
6970
6971 niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
6972 start, end);
6973 while (start < end) {
6974 int len, err, instance, type, prop_len;
6975 char namebuf[64];
6976 u8 *prop_buf;
6977 int max_len;
6978
6979 if (found_mask == FOUND_MASK_ALL) {
6980 niu_vpd_parse_version(np);
6981 return 1;
6982 }
6983
6984 err = niu_pci_eeprom_read(np, start + 2);
6985 if (err < 0)
6986 return err;
6987 len = err;
6988 start += 3;
6989
6990 instance = niu_pci_eeprom_read(np, start);
6991 type = niu_pci_eeprom_read(np, start + 3);
6992 prop_len = niu_pci_eeprom_read(np, start + 4);
6993 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
6994 if (err < 0)
6995 return err;
6996
6997 prop_buf = NULL;
6998 max_len = 0;
6999 if (!strcmp(namebuf, "model")) {
7000 prop_buf = np->vpd.model;
7001 max_len = NIU_VPD_MODEL_MAX;
7002 found_mask |= FOUND_MASK_MODEL;
7003 } else if (!strcmp(namebuf, "board-model")) {
7004 prop_buf = np->vpd.board_model;
7005 max_len = NIU_VPD_BD_MODEL_MAX;
7006 found_mask |= FOUND_MASK_BMODEL;
7007 } else if (!strcmp(namebuf, "version")) {
7008 prop_buf = np->vpd.version;
7009 max_len = NIU_VPD_VERSION_MAX;
7010 found_mask |= FOUND_MASK_VERS;
7011 } else if (!strcmp(namebuf, "local-mac-address")) {
7012 prop_buf = np->vpd.local_mac;
7013 max_len = ETH_ALEN;
7014 found_mask |= FOUND_MASK_MAC;
7015 } else if (!strcmp(namebuf, "num-mac-addresses")) {
7016 prop_buf = &np->vpd.mac_num;
7017 max_len = 1;
7018 found_mask |= FOUND_MASK_NMAC;
7019 } else if (!strcmp(namebuf, "phy-type")) {
7020 prop_buf = np->vpd.phy_type;
7021 max_len = NIU_VPD_PHY_TYPE_MAX;
7022 found_mask |= FOUND_MASK_PHY;
7023 }
7024
7025 if (max_len && prop_len > max_len) {
7026 dev_err(np->device, PFX "Property '%s' length (%d) is "
7027 "too long.\n", namebuf, prop_len);
7028 return -EINVAL;
7029 }
7030
7031 if (prop_buf) {
7032 u32 off = start + 5 + err;
7033 int i;
7034
7035 niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
7036 "len[%d]\n", namebuf, prop_len);
7037 for (i = 0; i < prop_len; i++)
7038 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
7039 }
7040
7041 start += len;
7042 }
7043
7044 return 0;
7045 }
7046
7047 /* ESPC_PIO_EN_ENABLE must be set */
7048 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
7049 {
7050 u32 offset;
7051 int err;
7052
7053 err = niu_pci_eeprom_read16_swp(np, start + 1);
7054 if (err < 0)
7055 return;
7056
7057 offset = err + 3;
7058
7059 while (start + offset < ESPC_EEPROM_SIZE) {
7060 u32 here = start + offset;
7061 u32 end;
7062
7063 err = niu_pci_eeprom_read(np, here);
7064 if (err != 0x90)
7065 return;
7066
7067 err = niu_pci_eeprom_read16_swp(np, here + 1);
7068 if (err < 0)
7069 return;
7070
7071 here = start + offset + 3;
7072 end = start + offset + err;
7073
7074 offset += err;
7075
7076 err = niu_pci_vpd_scan_props(np, here, end);
7077 if (err < 0 || err == 1)
7078 return;
7079 }
7080 }
7081
7082 /* ESPC_PIO_EN_ENABLE must be set */
7083 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
7084 {
7085 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
7086 int err;
7087
7088 while (start < end) {
7089 ret = start;
7090
7091 /* ROM header signature? */
7092 err = niu_pci_eeprom_read16(np, start + 0);
7093 if (err != 0x55aa)
7094 return 0;
7095
7096 /* Apply offset to PCI data structure. */
7097 err = niu_pci_eeprom_read16(np, start + 23);
7098 if (err < 0)
7099 return 0;
7100 start += err;
7101
7102 /* Check for "PCIR" signature. */
7103 err = niu_pci_eeprom_read16(np, start + 0);
7104 if (err != 0x5043)
7105 return 0;
7106 err = niu_pci_eeprom_read16(np, start + 2);
7107 if (err != 0x4952)
7108 return 0;
7109
7110 /* Check for OBP image type. */
7111 err = niu_pci_eeprom_read(np, start + 20);
7112 if (err < 0)
7113 return 0;
7114 if (err != 0x01) {
7115 err = niu_pci_eeprom_read(np, ret + 2);
7116 if (err < 0)
7117 return 0;
7118
7119 start = ret + (err * 512);
7120 continue;
7121 }
7122
7123 err = niu_pci_eeprom_read16_swp(np, start + 8);
7124 if (err < 0)
7125 return err;
7126 ret += err;
7127
7128 err = niu_pci_eeprom_read(np, ret + 0);
7129 if (err != 0x82)
7130 return 0;
7131
7132 return ret;
7133 }
7134
7135 return 0;
7136 }
7137
7138 static int __devinit niu_phy_type_prop_decode(struct niu *np,
7139 const char *phy_prop)
7140 {
7141 if (!strcmp(phy_prop, "mif")) {
7142 /* 1G copper, MII */
7143 np->flags &= ~(NIU_FLAGS_FIBER |
7144 NIU_FLAGS_10G);
7145 np->mac_xcvr = MAC_XCVR_MII;
7146 } else if (!strcmp(phy_prop, "xgf")) {
7147 /* 10G fiber, XPCS */
7148 np->flags |= (NIU_FLAGS_10G |
7149 NIU_FLAGS_FIBER);
7150 np->mac_xcvr = MAC_XCVR_XPCS;
7151 } else if (!strcmp(phy_prop, "pcs")) {
7152 /* 1G fiber, PCS */
7153 np->flags &= ~NIU_FLAGS_10G;
7154 np->flags |= NIU_FLAGS_FIBER;
7155 np->mac_xcvr = MAC_XCVR_PCS;
7156 } else if (!strcmp(phy_prop, "xgc")) {
7157 /* 10G copper, XPCS */
7158 np->flags |= NIU_FLAGS_10G;
7159 np->flags &= ~NIU_FLAGS_FIBER;
7160 np->mac_xcvr = MAC_XCVR_XPCS;
7161 } else {
7162 return -EINVAL;
7163 }
7164 return 0;
7165 }
7166
7167 static int niu_pci_vpd_get_nports(struct niu *np)
7168 {
7169 int ports = 0;
7170
7171 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
7172 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
7173 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
7174 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
7175 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
7176 ports = 4;
7177 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
7178 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
7179 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
7180 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
7181 ports = 2;
7182 }
7183
7184 return ports;
7185 }
7186
7187 static void __devinit niu_pci_vpd_validate(struct niu *np)
7188 {
7189 struct net_device *dev = np->dev;
7190 struct niu_vpd *vpd = &np->vpd;
7191 u8 val8;
7192
7193 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
7194 dev_err(np->device, PFX "VPD MAC invalid, "
7195 "falling back to SPROM.\n");
7196
7197 np->flags &= ~NIU_FLAGS_VPD_VALID;
7198 return;
7199 }
7200
7201 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
7202 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
7203 np->flags |= NIU_FLAGS_10G;
7204 np->flags &= ~NIU_FLAGS_FIBER;
7205 np->flags |= NIU_FLAGS_XCVR_SERDES;
7206 np->mac_xcvr = MAC_XCVR_PCS;
7207 if (np->port > 1) {
7208 np->flags |= NIU_FLAGS_FIBER;
7209 np->flags &= ~NIU_FLAGS_10G;
7210 }
7211 if (np->flags & NIU_FLAGS_10G)
7212 np->mac_xcvr = MAC_XCVR_XPCS;
7213 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
7214 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
7215 NIU_FLAGS_HOTPLUG_PHY);
7216 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
7217 dev_err(np->device, PFX "Illegal phy string [%s].\n",
7218 np->vpd.phy_type);
7219 dev_err(np->device, PFX "Falling back to SPROM.\n");
7220 np->flags &= ~NIU_FLAGS_VPD_VALID;
7221 return;
7222 }
7223
7224 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
7225
7226 val8 = dev->perm_addr[5];
7227 dev->perm_addr[5] += np->port;
7228 if (dev->perm_addr[5] < val8)
7229 dev->perm_addr[4]++;
7230
7231 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7232 }
7233
7234 static int __devinit niu_pci_probe_sprom(struct niu *np)
7235 {
7236 struct net_device *dev = np->dev;
7237 int len, i;
7238 u64 val, sum;
7239 u8 val8;
7240
7241 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
7242 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
7243 len = val / 4;
7244
7245 np->eeprom_len = len;
7246
7247 niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
7248
7249 sum = 0;
7250 for (i = 0; i < len; i++) {
7251 val = nr64(ESPC_NCR(i));
7252 sum += (val >> 0) & 0xff;
7253 sum += (val >> 8) & 0xff;
7254 sum += (val >> 16) & 0xff;
7255 sum += (val >> 24) & 0xff;
7256 }
7257 niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
7258 if ((sum & 0xff) != 0xab) {
7259 dev_err(np->device, PFX "Bad SPROM checksum "
7260 "(%x, should be 0xab)\n", (int) (sum & 0xff));
7261 return -EINVAL;
7262 }
7263
7264 val = nr64(ESPC_PHY_TYPE);
7265 switch (np->port) {
7266 case 0:
7267 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
7268 ESPC_PHY_TYPE_PORT0_SHIFT;
7269 break;
7270 case 1:
7271 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
7272 ESPC_PHY_TYPE_PORT1_SHIFT;
7273 break;
7274 case 2:
7275 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
7276 ESPC_PHY_TYPE_PORT2_SHIFT;
7277 break;
7278 case 3:
7279 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
7280 ESPC_PHY_TYPE_PORT3_SHIFT;
7281 break;
7282 default:
7283 dev_err(np->device, PFX "Bogus port number %u\n",
7284 np->port);
7285 return -EINVAL;
7286 }
7287 niudbg(PROBE, "SPROM: PHY type %x\n", val8);
7288
7289 switch (val8) {
7290 case ESPC_PHY_TYPE_1G_COPPER:
7291 /* 1G copper, MII */
7292 np->flags &= ~(NIU_FLAGS_FIBER |
7293 NIU_FLAGS_10G);
7294 np->mac_xcvr = MAC_XCVR_MII;
7295 break;
7296
7297 case ESPC_PHY_TYPE_1G_FIBER:
7298 /* 1G fiber, PCS */
7299 np->flags &= ~NIU_FLAGS_10G;
7300 np->flags |= NIU_FLAGS_FIBER;
7301 np->mac_xcvr = MAC_XCVR_PCS;
7302 break;
7303
7304 case ESPC_PHY_TYPE_10G_COPPER:
7305 /* 10G copper, XPCS */
7306 np->flags |= NIU_FLAGS_10G;
7307 np->flags &= ~NIU_FLAGS_FIBER;
7308 np->mac_xcvr = MAC_XCVR_XPCS;
7309 break;
7310
7311 case ESPC_PHY_TYPE_10G_FIBER:
7312 /* 10G fiber, XPCS */
7313 np->flags |= (NIU_FLAGS_10G |
7314 NIU_FLAGS_FIBER);
7315 np->mac_xcvr = MAC_XCVR_XPCS;
7316 break;
7317
7318 default:
7319 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
7320 return -EINVAL;
7321 }
7322
7323 val = nr64(ESPC_MAC_ADDR0);
7324 niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
7325 (unsigned long long) val);
7326 dev->perm_addr[0] = (val >> 0) & 0xff;
7327 dev->perm_addr[1] = (val >> 8) & 0xff;
7328 dev->perm_addr[2] = (val >> 16) & 0xff;
7329 dev->perm_addr[3] = (val >> 24) & 0xff;
7330
7331 val = nr64(ESPC_MAC_ADDR1);
7332 niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
7333 (unsigned long long) val);
7334 dev->perm_addr[4] = (val >> 0) & 0xff;
7335 dev->perm_addr[5] = (val >> 8) & 0xff;
7336
7337 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
7338 dev_err(np->device, PFX "SPROM MAC address invalid\n");
7339 dev_err(np->device, PFX "[ \n");
7340 for (i = 0; i < 6; i++)
7341 printk("%02x ", dev->perm_addr[i]);
7342 printk("]\n");
7343 return -EINVAL;
7344 }
7345
7346 val8 = dev->perm_addr[5];
7347 dev->perm_addr[5] += np->port;
7348 if (dev->perm_addr[5] < val8)
7349 dev->perm_addr[4]++;
7350
7351 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7352
7353 val = nr64(ESPC_MOD_STR_LEN);
7354 niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
7355 (unsigned long long) val);
7356 if (val >= 8 * 4)
7357 return -EINVAL;
7358
7359 for (i = 0; i < val; i += 4) {
7360 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
7361
7362 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
7363 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
7364 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
7365 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
7366 }
7367 np->vpd.model[val] = '\0';
7368
7369 val = nr64(ESPC_BD_MOD_STR_LEN);
7370 niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
7371 (unsigned long long) val);
7372 if (val >= 4 * 4)
7373 return -EINVAL;
7374
7375 for (i = 0; i < val; i += 4) {
7376 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
7377
7378 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
7379 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
7380 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
7381 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
7382 }
7383 np->vpd.board_model[val] = '\0';
7384
7385 np->vpd.mac_num =
7386 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
7387 niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
7388 np->vpd.mac_num);
7389
7390 return 0;
7391 }
7392
7393 static int __devinit niu_get_and_validate_port(struct niu *np)
7394 {
7395 struct niu_parent *parent = np->parent;
7396
7397 if (np->port <= 1)
7398 np->flags |= NIU_FLAGS_XMAC;
7399
7400 if (!parent->num_ports) {
7401 if (parent->plat_type == PLAT_TYPE_NIU) {
7402 parent->num_ports = 2;
7403 } else {
7404 parent->num_ports = niu_pci_vpd_get_nports(np);
7405 if (!parent->num_ports) {
7406 /* Fall back to SPROM as last resort.
7407 * This will fail on most cards.
7408 */
7409 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
7410 ESPC_NUM_PORTS_MACS_VAL;
7411
7412 /* All of the current probing methods fail on
7413 * Maramba on-board parts.
7414 */
7415 if (!parent->num_ports)
7416 parent->num_ports = 4;
7417 }
7418 }
7419 }
7420
7421 niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
7422 np->port, parent->num_ports);
7423 if (np->port >= parent->num_ports)
7424 return -ENODEV;
7425
7426 return 0;
7427 }
7428
7429 static int __devinit phy_record(struct niu_parent *parent,
7430 struct phy_probe_info *p,
7431 int dev_id_1, int dev_id_2, u8 phy_port,
7432 int type)
7433 {
7434 u32 id = (dev_id_1 << 16) | dev_id_2;
7435 u8 idx;
7436
7437 if (dev_id_1 < 0 || dev_id_2 < 0)
7438 return 0;
7439 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
7440 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
7441 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
7442 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
7443 return 0;
7444 } else {
7445 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
7446 return 0;
7447 }
7448
7449 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
7450 parent->index, id,
7451 (type == PHY_TYPE_PMA_PMD ?
7452 "PMA/PMD" :
7453 (type == PHY_TYPE_PCS ?
7454 "PCS" : "MII")),
7455 phy_port);
7456
7457 if (p->cur[type] >= NIU_MAX_PORTS) {
7458 printk(KERN_ERR PFX "Too many PHY ports.\n");
7459 return -EINVAL;
7460 }
7461 idx = p->cur[type];
7462 p->phy_id[type][idx] = id;
7463 p->phy_port[type][idx] = phy_port;
7464 p->cur[type] = idx + 1;
7465 return 0;
7466 }
7467
7468 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
7469 {
7470 int i;
7471
7472 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
7473 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
7474 return 1;
7475 }
7476 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
7477 if (p->phy_port[PHY_TYPE_PCS][i] == port)
7478 return 1;
7479 }
7480
7481 return 0;
7482 }
7483
7484 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
7485 {
7486 int port, cnt;
7487
7488 cnt = 0;
7489 *lowest = 32;
7490 for (port = 8; port < 32; port++) {
7491 if (port_has_10g(p, port)) {
7492 if (!cnt)
7493 *lowest = port;
7494 cnt++;
7495 }
7496 }
7497
7498 return cnt;
7499 }
7500
7501 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
7502 {
7503 *lowest = 32;
7504 if (p->cur[PHY_TYPE_MII])
7505 *lowest = p->phy_port[PHY_TYPE_MII][0];
7506
7507 return p->cur[PHY_TYPE_MII];
7508 }
7509
7510 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
7511 {
7512 int num_ports = parent->num_ports;
7513 int i;
7514
7515 for (i = 0; i < num_ports; i++) {
7516 parent->rxchan_per_port[i] = (16 / num_ports);
7517 parent->txchan_per_port[i] = (16 / num_ports);
7518
7519 pr_info(PFX "niu%d: Port %u [%u RX chans] "
7520 "[%u TX chans]\n",
7521 parent->index, i,
7522 parent->rxchan_per_port[i],
7523 parent->txchan_per_port[i]);
7524 }
7525 }
7526
7527 static void __devinit niu_divide_channels(struct niu_parent *parent,
7528 int num_10g, int num_1g)
7529 {
7530 int num_ports = parent->num_ports;
7531 int rx_chans_per_10g, rx_chans_per_1g;
7532 int tx_chans_per_10g, tx_chans_per_1g;
7533 int i, tot_rx, tot_tx;
7534
7535 if (!num_10g || !num_1g) {
7536 rx_chans_per_10g = rx_chans_per_1g =
7537 (NIU_NUM_RXCHAN / num_ports);
7538 tx_chans_per_10g = tx_chans_per_1g =
7539 (NIU_NUM_TXCHAN / num_ports);
7540 } else {
7541 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
7542 rx_chans_per_10g = (NIU_NUM_RXCHAN -
7543 (rx_chans_per_1g * num_1g)) /
7544 num_10g;
7545
7546 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
7547 tx_chans_per_10g = (NIU_NUM_TXCHAN -
7548 (tx_chans_per_1g * num_1g)) /
7549 num_10g;
7550 }
7551
7552 tot_rx = tot_tx = 0;
7553 for (i = 0; i < num_ports; i++) {
7554 int type = phy_decode(parent->port_phy, i);
7555
7556 if (type == PORT_TYPE_10G) {
7557 parent->rxchan_per_port[i] = rx_chans_per_10g;
7558 parent->txchan_per_port[i] = tx_chans_per_10g;
7559 } else {
7560 parent->rxchan_per_port[i] = rx_chans_per_1g;
7561 parent->txchan_per_port[i] = tx_chans_per_1g;
7562 }
7563 pr_info(PFX "niu%d: Port %u [%u RX chans] "
7564 "[%u TX chans]\n",
7565 parent->index, i,
7566 parent->rxchan_per_port[i],
7567 parent->txchan_per_port[i]);
7568 tot_rx += parent->rxchan_per_port[i];
7569 tot_tx += parent->txchan_per_port[i];
7570 }
7571
7572 if (tot_rx > NIU_NUM_RXCHAN) {
7573 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
7574 "resetting to one per port.\n",
7575 parent->index, tot_rx);
7576 for (i = 0; i < num_ports; i++)
7577 parent->rxchan_per_port[i] = 1;
7578 }
7579 if (tot_tx > NIU_NUM_TXCHAN) {
7580 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
7581 "resetting to one per port.\n",
7582 parent->index, tot_tx);
7583 for (i = 0; i < num_ports; i++)
7584 parent->txchan_per_port[i] = 1;
7585 }
7586 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
7587 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
7588 "RX[%d] TX[%d]\n",
7589 parent->index, tot_rx, tot_tx);
7590 }
7591 }
7592
7593 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
7594 int num_10g, int num_1g)
7595 {
7596 int i, num_ports = parent->num_ports;
7597 int rdc_group, rdc_groups_per_port;
7598 int rdc_channel_base;
7599
7600 rdc_group = 0;
7601 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
7602
7603 rdc_channel_base = 0;
7604
7605 for (i = 0; i < num_ports; i++) {
7606 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
7607 int grp, num_channels = parent->rxchan_per_port[i];
7608 int this_channel_offset;
7609
7610 tp->first_table_num = rdc_group;
7611 tp->num_tables = rdc_groups_per_port;
7612 this_channel_offset = 0;
7613 for (grp = 0; grp < tp->num_tables; grp++) {
7614 struct rdc_table *rt = &tp->tables[grp];
7615 int slot;
7616
7617 pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
7618 parent->index, i, tp->first_table_num + grp);
7619 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
7620 rt->rxdma_channel[slot] =
7621 rdc_channel_base + this_channel_offset;
7622
7623 printk("%d ", rt->rxdma_channel[slot]);
7624
7625 if (++this_channel_offset == num_channels)
7626 this_channel_offset = 0;
7627 }
7628 printk("]\n");
7629 }
7630
7631 parent->rdc_default[i] = rdc_channel_base;
7632
7633 rdc_channel_base += num_channels;
7634 rdc_group += rdc_groups_per_port;
7635 }
7636 }
7637
7638 static int __devinit fill_phy_probe_info(struct niu *np,
7639 struct niu_parent *parent,
7640 struct phy_probe_info *info)
7641 {
7642 unsigned long flags;
7643 int port, err;
7644
7645 memset(info, 0, sizeof(*info));
7646
7647 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
7648 niu_lock_parent(np, flags);
7649 err = 0;
7650 for (port = 8; port < 32; port++) {
7651 int dev_id_1, dev_id_2;
7652
7653 dev_id_1 = mdio_read(np, port,
7654 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
7655 dev_id_2 = mdio_read(np, port,
7656 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
7657 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
7658 PHY_TYPE_PMA_PMD);
7659 if (err)
7660 break;
7661 dev_id_1 = mdio_read(np, port,
7662 NIU_PCS_DEV_ADDR, MII_PHYSID1);
7663 dev_id_2 = mdio_read(np, port,
7664 NIU_PCS_DEV_ADDR, MII_PHYSID2);
7665 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
7666 PHY_TYPE_PCS);
7667 if (err)
7668 break;
7669 dev_id_1 = mii_read(np, port, MII_PHYSID1);
7670 dev_id_2 = mii_read(np, port, MII_PHYSID2);
7671 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
7672 PHY_TYPE_MII);
7673 if (err)
7674 break;
7675 }
7676 niu_unlock_parent(np, flags);
7677
7678 return err;
7679 }
7680
7681 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
7682 {
7683 struct phy_probe_info *info = &parent->phy_probe_info;
7684 int lowest_10g, lowest_1g;
7685 int num_10g, num_1g;
7686 u32 val;
7687 int err;
7688
7689 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
7690 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
7691 num_10g = 0;
7692 num_1g = 2;
7693 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
7694 parent->num_ports = 4;
7695 val = (phy_encode(PORT_TYPE_1G, 0) |
7696 phy_encode(PORT_TYPE_1G, 1) |
7697 phy_encode(PORT_TYPE_1G, 2) |
7698 phy_encode(PORT_TYPE_1G, 3));
7699 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
7700 num_10g = 2;
7701 num_1g = 0;
7702 parent->num_ports = 2;
7703 val = (phy_encode(PORT_TYPE_10G, 0) |
7704 phy_encode(PORT_TYPE_10G, 1));
7705 } else {
7706 err = fill_phy_probe_info(np, parent, info);
7707 if (err)
7708 return err;
7709
7710 num_10g = count_10g_ports(info, &lowest_10g);
7711 num_1g = count_1g_ports(info, &lowest_1g);
7712
7713 switch ((num_10g << 4) | num_1g) {
7714 case 0x24:
7715 if (lowest_1g == 10)
7716 parent->plat_type = PLAT_TYPE_VF_P0;
7717 else if (lowest_1g == 26)
7718 parent->plat_type = PLAT_TYPE_VF_P1;
7719 else
7720 goto unknown_vg_1g_port;
7721
7722 /* fallthru */
7723 case 0x22:
7724 val = (phy_encode(PORT_TYPE_10G, 0) |
7725 phy_encode(PORT_TYPE_10G, 1) |
7726 phy_encode(PORT_TYPE_1G, 2) |
7727 phy_encode(PORT_TYPE_1G, 3));
7728 break;
7729
7730 case 0x20:
7731 val = (phy_encode(PORT_TYPE_10G, 0) |
7732 phy_encode(PORT_TYPE_10G, 1));
7733 break;
7734
7735 case 0x10:
7736 val = phy_encode(PORT_TYPE_10G, np->port);
7737 break;
7738
7739 case 0x14:
7740 if (lowest_1g == 10)
7741 parent->plat_type = PLAT_TYPE_VF_P0;
7742 else if (lowest_1g == 26)
7743 parent->plat_type = PLAT_TYPE_VF_P1;
7744 else
7745 goto unknown_vg_1g_port;
7746
7747 /* fallthru */
7748 case 0x13:
7749 if ((lowest_10g & 0x7) == 0)
7750 val = (phy_encode(PORT_TYPE_10G, 0) |
7751 phy_encode(PORT_TYPE_1G, 1) |
7752 phy_encode(PORT_TYPE_1G, 2) |
7753 phy_encode(PORT_TYPE_1G, 3));
7754 else
7755 val = (phy_encode(PORT_TYPE_1G, 0) |
7756 phy_encode(PORT_TYPE_10G, 1) |
7757 phy_encode(PORT_TYPE_1G, 2) |
7758 phy_encode(PORT_TYPE_1G, 3));
7759 break;
7760
7761 case 0x04:
7762 if (lowest_1g == 10)
7763 parent->plat_type = PLAT_TYPE_VF_P0;
7764 else if (lowest_1g == 26)
7765 parent->plat_type = PLAT_TYPE_VF_P1;
7766 else
7767 goto unknown_vg_1g_port;
7768
7769 val = (phy_encode(PORT_TYPE_1G, 0) |
7770 phy_encode(PORT_TYPE_1G, 1) |
7771 phy_encode(PORT_TYPE_1G, 2) |
7772 phy_encode(PORT_TYPE_1G, 3));
7773 break;
7774
7775 default:
7776 printk(KERN_ERR PFX "Unsupported port config "
7777 "10G[%d] 1G[%d]\n",
7778 num_10g, num_1g);
7779 return -EINVAL;
7780 }
7781 }
7782
7783 parent->port_phy = val;
7784
7785 if (parent->plat_type == PLAT_TYPE_NIU)
7786 niu_n2_divide_channels(parent);
7787 else
7788 niu_divide_channels(parent, num_10g, num_1g);
7789
7790 niu_divide_rdc_groups(parent, num_10g, num_1g);
7791
7792 return 0;
7793
7794 unknown_vg_1g_port:
7795 printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
7796 lowest_1g);
7797 return -EINVAL;
7798 }
7799
7800 static int __devinit niu_probe_ports(struct niu *np)
7801 {
7802 struct niu_parent *parent = np->parent;
7803 int err, i;
7804
7805 niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
7806 parent->port_phy);
7807
7808 if (parent->port_phy == PORT_PHY_UNKNOWN) {
7809 err = walk_phys(np, parent);
7810 if (err)
7811 return err;
7812
7813 niu_set_ldg_timer_res(np, 2);
7814 for (i = 0; i <= LDN_MAX; i++)
7815 niu_ldn_irq_enable(np, i, 0);
7816 }
7817
7818 if (parent->port_phy == PORT_PHY_INVALID)
7819 return -EINVAL;
7820
7821 return 0;
7822 }
7823
7824 static int __devinit niu_classifier_swstate_init(struct niu *np)
7825 {
7826 struct niu_classifier *cp = &np->clas;
7827
7828 niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
7829 np->parent->tcam_num_entries);
7830
7831 cp->tcam_index = (u16) np->port;
7832 cp->h1_init = 0xffffffff;
7833 cp->h2_init = 0xffff;
7834
7835 return fflp_early_init(np);
7836 }
7837
7838 static void __devinit niu_link_config_init(struct niu *np)
7839 {
7840 struct niu_link_config *lp = &np->link_config;
7841
7842 lp->advertising = (ADVERTISED_10baseT_Half |
7843 ADVERTISED_10baseT_Full |
7844 ADVERTISED_100baseT_Half |
7845 ADVERTISED_100baseT_Full |
7846 ADVERTISED_1000baseT_Half |
7847 ADVERTISED_1000baseT_Full |
7848 ADVERTISED_10000baseT_Full |
7849 ADVERTISED_Autoneg);
7850 lp->speed = lp->active_speed = SPEED_INVALID;
7851 lp->duplex = lp->active_duplex = DUPLEX_INVALID;
7852 #if 0
7853 lp->loopback_mode = LOOPBACK_MAC;
7854 lp->active_speed = SPEED_10000;
7855 lp->active_duplex = DUPLEX_FULL;
7856 #else
7857 lp->loopback_mode = LOOPBACK_DISABLED;
7858 #endif
7859 }
7860
7861 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
7862 {
7863 switch (np->port) {
7864 case 0:
7865 np->mac_regs = np->regs + XMAC_PORT0_OFF;
7866 np->ipp_off = 0x00000;
7867 np->pcs_off = 0x04000;
7868 np->xpcs_off = 0x02000;
7869 break;
7870
7871 case 1:
7872 np->mac_regs = np->regs + XMAC_PORT1_OFF;
7873 np->ipp_off = 0x08000;
7874 np->pcs_off = 0x0a000;
7875 np->xpcs_off = 0x08000;
7876 break;
7877
7878 case 2:
7879 np->mac_regs = np->regs + BMAC_PORT2_OFF;
7880 np->ipp_off = 0x04000;
7881 np->pcs_off = 0x0e000;
7882 np->xpcs_off = ~0UL;
7883 break;
7884
7885 case 3:
7886 np->mac_regs = np->regs + BMAC_PORT3_OFF;
7887 np->ipp_off = 0x0c000;
7888 np->pcs_off = 0x12000;
7889 np->xpcs_off = ~0UL;
7890 break;
7891
7892 default:
7893 dev_err(np->device, PFX "Port %u is invalid, cannot "
7894 "compute MAC block offset.\n", np->port);
7895 return -EINVAL;
7896 }
7897
7898 return 0;
7899 }
7900
7901 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
7902 {
7903 struct msix_entry msi_vec[NIU_NUM_LDG];
7904 struct niu_parent *parent = np->parent;
7905 struct pci_dev *pdev = np->pdev;
7906 int i, num_irqs, err;
7907 u8 first_ldg;
7908
7909 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
7910 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
7911 ldg_num_map[i] = first_ldg + i;
7912
7913 num_irqs = (parent->rxchan_per_port[np->port] +
7914 parent->txchan_per_port[np->port] +
7915 (np->port == 0 ? 3 : 1));
7916 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
7917
7918 retry:
7919 for (i = 0; i < num_irqs; i++) {
7920 msi_vec[i].vector = 0;
7921 msi_vec[i].entry = i;
7922 }
7923
7924 err = pci_enable_msix(pdev, msi_vec, num_irqs);
7925 if (err < 0) {
7926 np->flags &= ~NIU_FLAGS_MSIX;
7927 return;
7928 }
7929 if (err > 0) {
7930 num_irqs = err;
7931 goto retry;
7932 }
7933
7934 np->flags |= NIU_FLAGS_MSIX;
7935 for (i = 0; i < num_irqs; i++)
7936 np->ldg[i].irq = msi_vec[i].vector;
7937 np->num_ldg = num_irqs;
7938 }
7939
7940 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
7941 {
7942 #ifdef CONFIG_SPARC64
7943 struct of_device *op = np->op;
7944 const u32 *int_prop;
7945 int i;
7946
7947 int_prop = of_get_property(op->node, "interrupts", NULL);
7948 if (!int_prop)
7949 return -ENODEV;
7950
7951 for (i = 0; i < op->num_irqs; i++) {
7952 ldg_num_map[i] = int_prop[i];
7953 np->ldg[i].irq = op->irqs[i];
7954 }
7955
7956 np->num_ldg = op->num_irqs;
7957
7958 return 0;
7959 #else
7960 return -EINVAL;
7961 #endif
7962 }
7963
7964 static int __devinit niu_ldg_init(struct niu *np)
7965 {
7966 struct niu_parent *parent = np->parent;
7967 u8 ldg_num_map[NIU_NUM_LDG];
7968 int first_chan, num_chan;
7969 int i, err, ldg_rotor;
7970 u8 port;
7971
7972 np->num_ldg = 1;
7973 np->ldg[0].irq = np->dev->irq;
7974 if (parent->plat_type == PLAT_TYPE_NIU) {
7975 err = niu_n2_irq_init(np, ldg_num_map);
7976 if (err)
7977 return err;
7978 } else
7979 niu_try_msix(np, ldg_num_map);
7980
7981 port = np->port;
7982 for (i = 0; i < np->num_ldg; i++) {
7983 struct niu_ldg *lp = &np->ldg[i];
7984
7985 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
7986
7987 lp->np = np;
7988 lp->ldg_num = ldg_num_map[i];
7989 lp->timer = 2; /* XXX */
7990
7991 /* On N2 NIU the firmware has setup the SID mappings so they go
7992 * to the correct values that will route the LDG to the proper
7993 * interrupt in the NCU interrupt table.
7994 */
7995 if (np->parent->plat_type != PLAT_TYPE_NIU) {
7996 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
7997 if (err)
7998 return err;
7999 }
8000 }
8001
8002 /* We adopt the LDG assignment ordering used by the N2 NIU
8003 * 'interrupt' properties because that simplifies a lot of
8004 * things. This ordering is:
8005 *
8006 * MAC
8007 * MIF (if port zero)
8008 * SYSERR (if port zero)
8009 * RX channels
8010 * TX channels
8011 */
8012
8013 ldg_rotor = 0;
8014
8015 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
8016 LDN_MAC(port));
8017 if (err)
8018 return err;
8019
8020 ldg_rotor++;
8021 if (ldg_rotor == np->num_ldg)
8022 ldg_rotor = 0;
8023
8024 if (port == 0) {
8025 err = niu_ldg_assign_ldn(np, parent,
8026 ldg_num_map[ldg_rotor],
8027 LDN_MIF);
8028 if (err)
8029 return err;
8030
8031 ldg_rotor++;
8032 if (ldg_rotor == np->num_ldg)
8033 ldg_rotor = 0;
8034
8035 err = niu_ldg_assign_ldn(np, parent,
8036 ldg_num_map[ldg_rotor],
8037 LDN_DEVICE_ERROR);
8038 if (err)
8039 return err;
8040
8041 ldg_rotor++;
8042 if (ldg_rotor == np->num_ldg)
8043 ldg_rotor = 0;
8044
8045 }
8046
8047 first_chan = 0;
8048 for (i = 0; i < port; i++)
8049 first_chan += parent->rxchan_per_port[port];
8050 num_chan = parent->rxchan_per_port[port];
8051
8052 for (i = first_chan; i < (first_chan + num_chan); i++) {
8053 err = niu_ldg_assign_ldn(np, parent,
8054 ldg_num_map[ldg_rotor],
8055 LDN_RXDMA(i));
8056 if (err)
8057 return err;
8058 ldg_rotor++;
8059 if (ldg_rotor == np->num_ldg)
8060 ldg_rotor = 0;
8061 }
8062
8063 first_chan = 0;
8064 for (i = 0; i < port; i++)
8065 first_chan += parent->txchan_per_port[port];
8066 num_chan = parent->txchan_per_port[port];
8067 for (i = first_chan; i < (first_chan + num_chan); i++) {
8068 err = niu_ldg_assign_ldn(np, parent,
8069 ldg_num_map[ldg_rotor],
8070 LDN_TXDMA(i));
8071 if (err)
8072 return err;
8073 ldg_rotor++;
8074 if (ldg_rotor == np->num_ldg)
8075 ldg_rotor = 0;
8076 }
8077
8078 return 0;
8079 }
8080
8081 static void __devexit niu_ldg_free(struct niu *np)
8082 {
8083 if (np->flags & NIU_FLAGS_MSIX)
8084 pci_disable_msix(np->pdev);
8085 }
8086
8087 static int __devinit niu_get_of_props(struct niu *np)
8088 {
8089 #ifdef CONFIG_SPARC64
8090 struct net_device *dev = np->dev;
8091 struct device_node *dp;
8092 const char *phy_type;
8093 const u8 *mac_addr;
8094 const char *model;
8095 int prop_len;
8096
8097 if (np->parent->plat_type == PLAT_TYPE_NIU)
8098 dp = np->op->node;
8099 else
8100 dp = pci_device_to_OF_node(np->pdev);
8101
8102 phy_type = of_get_property(dp, "phy-type", &prop_len);
8103 if (!phy_type) {
8104 dev_err(np->device, PFX "%s: OF node lacks "
8105 "phy-type property\n",
8106 dp->full_name);
8107 return -EINVAL;
8108 }
8109
8110 if (!strcmp(phy_type, "none"))
8111 return -ENODEV;
8112
8113 strcpy(np->vpd.phy_type, phy_type);
8114
8115 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8116 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
8117 dp->full_name, np->vpd.phy_type);
8118 return -EINVAL;
8119 }
8120
8121 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
8122 if (!mac_addr) {
8123 dev_err(np->device, PFX "%s: OF node lacks "
8124 "local-mac-address property\n",
8125 dp->full_name);
8126 return -EINVAL;
8127 }
8128 if (prop_len != dev->addr_len) {
8129 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
8130 "is wrong.\n",
8131 dp->full_name, prop_len);
8132 }
8133 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
8134 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8135 int i;
8136
8137 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
8138 dp->full_name);
8139 dev_err(np->device, PFX "%s: [ \n",
8140 dp->full_name);
8141 for (i = 0; i < 6; i++)
8142 printk("%02x ", dev->perm_addr[i]);
8143 printk("]\n");
8144 return -EINVAL;
8145 }
8146
8147 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8148
8149 model = of_get_property(dp, "model", &prop_len);
8150
8151 if (model)
8152 strcpy(np->vpd.model, model);
8153
8154 return 0;
8155 #else
8156 return -EINVAL;
8157 #endif
8158 }
8159
8160 static int __devinit niu_get_invariants(struct niu *np)
8161 {
8162 int err, have_props;
8163 u32 offset;
8164
8165 err = niu_get_of_props(np);
8166 if (err == -ENODEV)
8167 return err;
8168
8169 have_props = !err;
8170
8171 err = niu_init_mac_ipp_pcs_base(np);
8172 if (err)
8173 return err;
8174
8175 if (have_props) {
8176 err = niu_get_and_validate_port(np);
8177 if (err)
8178 return err;
8179
8180 } else {
8181 if (np->parent->plat_type == PLAT_TYPE_NIU)
8182 return -EINVAL;
8183
8184 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
8185 offset = niu_pci_vpd_offset(np);
8186 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
8187 offset);
8188 if (offset)
8189 niu_pci_vpd_fetch(np, offset);
8190 nw64(ESPC_PIO_EN, 0);
8191
8192 if (np->flags & NIU_FLAGS_VPD_VALID) {
8193 niu_pci_vpd_validate(np);
8194 err = niu_get_and_validate_port(np);
8195 if (err)
8196 return err;
8197 }
8198
8199 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
8200 err = niu_get_and_validate_port(np);
8201 if (err)
8202 return err;
8203 err = niu_pci_probe_sprom(np);
8204 if (err)
8205 return err;
8206 }
8207 }
8208
8209 err = niu_probe_ports(np);
8210 if (err)
8211 return err;
8212
8213 niu_ldg_init(np);
8214
8215 niu_classifier_swstate_init(np);
8216 niu_link_config_init(np);
8217
8218 err = niu_determine_phy_disposition(np);
8219 if (!err)
8220 err = niu_init_link(np);
8221
8222 return err;
8223 }
8224
8225 static LIST_HEAD(niu_parent_list);
8226 static DEFINE_MUTEX(niu_parent_lock);
8227 static int niu_parent_index;
8228
8229 static ssize_t show_port_phy(struct device *dev,
8230 struct device_attribute *attr, char *buf)
8231 {
8232 struct platform_device *plat_dev = to_platform_device(dev);
8233 struct niu_parent *p = plat_dev->dev.platform_data;
8234 u32 port_phy = p->port_phy;
8235 char *orig_buf = buf;
8236 int i;
8237
8238 if (port_phy == PORT_PHY_UNKNOWN ||
8239 port_phy == PORT_PHY_INVALID)
8240 return 0;
8241
8242 for (i = 0; i < p->num_ports; i++) {
8243 const char *type_str;
8244 int type;
8245
8246 type = phy_decode(port_phy, i);
8247 if (type == PORT_TYPE_10G)
8248 type_str = "10G";
8249 else
8250 type_str = "1G";
8251 buf += sprintf(buf,
8252 (i == 0) ? "%s" : " %s",
8253 type_str);
8254 }
8255 buf += sprintf(buf, "\n");
8256 return buf - orig_buf;
8257 }
8258
8259 static ssize_t show_plat_type(struct device *dev,
8260 struct device_attribute *attr, char *buf)
8261 {
8262 struct platform_device *plat_dev = to_platform_device(dev);
8263 struct niu_parent *p = plat_dev->dev.platform_data;
8264 const char *type_str;
8265
8266 switch (p->plat_type) {
8267 case PLAT_TYPE_ATLAS:
8268 type_str = "atlas";
8269 break;
8270 case PLAT_TYPE_NIU:
8271 type_str = "niu";
8272 break;
8273 case PLAT_TYPE_VF_P0:
8274 type_str = "vf_p0";
8275 break;
8276 case PLAT_TYPE_VF_P1:
8277 type_str = "vf_p1";
8278 break;
8279 default:
8280 type_str = "unknown";
8281 break;
8282 }
8283
8284 return sprintf(buf, "%s\n", type_str);
8285 }
8286
8287 static ssize_t __show_chan_per_port(struct device *dev,
8288 struct device_attribute *attr, char *buf,
8289 int rx)
8290 {
8291 struct platform_device *plat_dev = to_platform_device(dev);
8292 struct niu_parent *p = plat_dev->dev.platform_data;
8293 char *orig_buf = buf;
8294 u8 *arr;
8295 int i;
8296
8297 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
8298
8299 for (i = 0; i < p->num_ports; i++) {
8300 buf += sprintf(buf,
8301 (i == 0) ? "%d" : " %d",
8302 arr[i]);
8303 }
8304 buf += sprintf(buf, "\n");
8305
8306 return buf - orig_buf;
8307 }
8308
8309 static ssize_t show_rxchan_per_port(struct device *dev,
8310 struct device_attribute *attr, char *buf)
8311 {
8312 return __show_chan_per_port(dev, attr, buf, 1);
8313 }
8314
8315 static ssize_t show_txchan_per_port(struct device *dev,
8316 struct device_attribute *attr, char *buf)
8317 {
8318 return __show_chan_per_port(dev, attr, buf, 1);
8319 }
8320
8321 static ssize_t show_num_ports(struct device *dev,
8322 struct device_attribute *attr, char *buf)
8323 {
8324 struct platform_device *plat_dev = to_platform_device(dev);
8325 struct niu_parent *p = plat_dev->dev.platform_data;
8326
8327 return sprintf(buf, "%d\n", p->num_ports);
8328 }
8329
8330 static struct device_attribute niu_parent_attributes[] = {
8331 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
8332 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
8333 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
8334 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
8335 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
8336 {}
8337 };
8338
8339 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
8340 union niu_parent_id *id,
8341 u8 ptype)
8342 {
8343 struct platform_device *plat_dev;
8344 struct niu_parent *p;
8345 int i;
8346
8347 niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
8348
8349 plat_dev = platform_device_register_simple("niu", niu_parent_index,
8350 NULL, 0);
8351 if (!plat_dev)
8352 return NULL;
8353
8354 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
8355 int err = device_create_file(&plat_dev->dev,
8356 &niu_parent_attributes[i]);
8357 if (err)
8358 goto fail_unregister;
8359 }
8360
8361 p = kzalloc(sizeof(*p), GFP_KERNEL);
8362 if (!p)
8363 goto fail_unregister;
8364
8365 p->index = niu_parent_index++;
8366
8367 plat_dev->dev.platform_data = p;
8368 p->plat_dev = plat_dev;
8369
8370 memcpy(&p->id, id, sizeof(*id));
8371 p->plat_type = ptype;
8372 INIT_LIST_HEAD(&p->list);
8373 atomic_set(&p->refcnt, 0);
8374 list_add(&p->list, &niu_parent_list);
8375 spin_lock_init(&p->lock);
8376
8377 p->rxdma_clock_divider = 7500;
8378
8379 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
8380 if (p->plat_type == PLAT_TYPE_NIU)
8381 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
8382
8383 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
8384 int index = i - CLASS_CODE_USER_PROG1;
8385
8386 p->tcam_key[index] = TCAM_KEY_TSEL;
8387 p->flow_key[index] = (FLOW_KEY_IPSA |
8388 FLOW_KEY_IPDA |
8389 FLOW_KEY_PROTO |
8390 (FLOW_KEY_L4_BYTE12 <<
8391 FLOW_KEY_L4_0_SHIFT) |
8392 (FLOW_KEY_L4_BYTE12 <<
8393 FLOW_KEY_L4_1_SHIFT));
8394 }
8395
8396 for (i = 0; i < LDN_MAX + 1; i++)
8397 p->ldg_map[i] = LDG_INVALID;
8398
8399 return p;
8400
8401 fail_unregister:
8402 platform_device_unregister(plat_dev);
8403 return NULL;
8404 }
8405
8406 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
8407 union niu_parent_id *id,
8408 u8 ptype)
8409 {
8410 struct niu_parent *p, *tmp;
8411 int port = np->port;
8412
8413 niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
8414 ptype, port);
8415
8416 mutex_lock(&niu_parent_lock);
8417 p = NULL;
8418 list_for_each_entry(tmp, &niu_parent_list, list) {
8419 if (!memcmp(id, &tmp->id, sizeof(*id))) {
8420 p = tmp;
8421 break;
8422 }
8423 }
8424 if (!p)
8425 p = niu_new_parent(np, id, ptype);
8426
8427 if (p) {
8428 char port_name[6];
8429 int err;
8430
8431 sprintf(port_name, "port%d", port);
8432 err = sysfs_create_link(&p->plat_dev->dev.kobj,
8433 &np->device->kobj,
8434 port_name);
8435 if (!err) {
8436 p->ports[port] = np;
8437 atomic_inc(&p->refcnt);
8438 }
8439 }
8440 mutex_unlock(&niu_parent_lock);
8441
8442 return p;
8443 }
8444
8445 static void niu_put_parent(struct niu *np)
8446 {
8447 struct niu_parent *p = np->parent;
8448 u8 port = np->port;
8449 char port_name[6];
8450
8451 BUG_ON(!p || p->ports[port] != np);
8452
8453 niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
8454
8455 sprintf(port_name, "port%d", port);
8456
8457 mutex_lock(&niu_parent_lock);
8458
8459 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
8460
8461 p->ports[port] = NULL;
8462 np->parent = NULL;
8463
8464 if (atomic_dec_and_test(&p->refcnt)) {
8465 list_del(&p->list);
8466 platform_device_unregister(p->plat_dev);
8467 }
8468
8469 mutex_unlock(&niu_parent_lock);
8470 }
8471
8472 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
8473 u64 *handle, gfp_t flag)
8474 {
8475 dma_addr_t dh;
8476 void *ret;
8477
8478 ret = dma_alloc_coherent(dev, size, &dh, flag);
8479 if (ret)
8480 *handle = dh;
8481 return ret;
8482 }
8483
8484 static void niu_pci_free_coherent(struct device *dev, size_t size,
8485 void *cpu_addr, u64 handle)
8486 {
8487 dma_free_coherent(dev, size, cpu_addr, handle);
8488 }
8489
8490 static u64 niu_pci_map_page(struct device *dev, struct page *page,
8491 unsigned long offset, size_t size,
8492 enum dma_data_direction direction)
8493 {
8494 return dma_map_page(dev, page, offset, size, direction);
8495 }
8496
8497 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
8498 size_t size, enum dma_data_direction direction)
8499 {
8500 return dma_unmap_page(dev, dma_address, size, direction);
8501 }
8502
8503 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
8504 size_t size,
8505 enum dma_data_direction direction)
8506 {
8507 return dma_map_single(dev, cpu_addr, size, direction);
8508 }
8509
8510 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
8511 size_t size,
8512 enum dma_data_direction direction)
8513 {
8514 dma_unmap_single(dev, dma_address, size, direction);
8515 }
8516
8517 static const struct niu_ops niu_pci_ops = {
8518 .alloc_coherent = niu_pci_alloc_coherent,
8519 .free_coherent = niu_pci_free_coherent,
8520 .map_page = niu_pci_map_page,
8521 .unmap_page = niu_pci_unmap_page,
8522 .map_single = niu_pci_map_single,
8523 .unmap_single = niu_pci_unmap_single,
8524 };
8525
8526 static void __devinit niu_driver_version(void)
8527 {
8528 static int niu_version_printed;
8529
8530 if (niu_version_printed++ == 0)
8531 pr_info("%s", version);
8532 }
8533
8534 static struct net_device * __devinit niu_alloc_and_init(
8535 struct device *gen_dev, struct pci_dev *pdev,
8536 struct of_device *op, const struct niu_ops *ops,
8537 u8 port)
8538 {
8539 struct net_device *dev;
8540 struct niu *np;
8541
8542 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
8543 if (!dev) {
8544 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
8545 return NULL;
8546 }
8547
8548 SET_NETDEV_DEV(dev, gen_dev);
8549
8550 np = netdev_priv(dev);
8551 np->dev = dev;
8552 np->pdev = pdev;
8553 np->op = op;
8554 np->device = gen_dev;
8555 np->ops = ops;
8556
8557 np->msg_enable = niu_debug;
8558
8559 spin_lock_init(&np->lock);
8560 INIT_WORK(&np->reset_task, niu_reset_task);
8561
8562 np->port = port;
8563
8564 return dev;
8565 }
8566
8567 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
8568 {
8569 dev->open = niu_open;
8570 dev->stop = niu_close;
8571 dev->get_stats = niu_get_stats;
8572 dev->set_multicast_list = niu_set_rx_mode;
8573 dev->set_mac_address = niu_set_mac_addr;
8574 dev->do_ioctl = niu_ioctl;
8575 dev->tx_timeout = niu_tx_timeout;
8576 dev->hard_start_xmit = niu_start_xmit;
8577 dev->ethtool_ops = &niu_ethtool_ops;
8578 dev->watchdog_timeo = NIU_TX_TIMEOUT;
8579 dev->change_mtu = niu_change_mtu;
8580 }
8581
8582 static void __devinit niu_device_announce(struct niu *np)
8583 {
8584 struct net_device *dev = np->dev;
8585 DECLARE_MAC_BUF(mac);
8586
8587 pr_info("%s: NIU Ethernet %s\n",
8588 dev->name, print_mac(mac, dev->dev_addr));
8589
8590 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
8591 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
8592 dev->name,
8593 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
8594 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
8595 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
8596 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
8597 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
8598 np->vpd.phy_type);
8599 } else {
8600 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
8601 dev->name,
8602 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
8603 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
8604 (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
8605 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
8606 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
8607 np->vpd.phy_type);
8608 }
8609 }
8610
8611 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
8612 const struct pci_device_id *ent)
8613 {
8614 unsigned long niureg_base, niureg_len;
8615 union niu_parent_id parent_id;
8616 struct net_device *dev;
8617 struct niu *np;
8618 int err, pos;
8619 u64 dma_mask;
8620 u16 val16;
8621
8622 niu_driver_version();
8623
8624 err = pci_enable_device(pdev);
8625 if (err) {
8626 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
8627 "aborting.\n");
8628 return err;
8629 }
8630
8631 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
8632 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
8633 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
8634 "base addresses, aborting.\n");
8635 err = -ENODEV;
8636 goto err_out_disable_pdev;
8637 }
8638
8639 err = pci_request_regions(pdev, DRV_MODULE_NAME);
8640 if (err) {
8641 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
8642 "aborting.\n");
8643 goto err_out_disable_pdev;
8644 }
8645
8646 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
8647 if (pos <= 0) {
8648 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
8649 "aborting.\n");
8650 goto err_out_free_res;
8651 }
8652
8653 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
8654 &niu_pci_ops, PCI_FUNC(pdev->devfn));
8655 if (!dev) {
8656 err = -ENOMEM;
8657 goto err_out_free_res;
8658 }
8659 np = netdev_priv(dev);
8660
8661 memset(&parent_id, 0, sizeof(parent_id));
8662 parent_id.pci.domain = pci_domain_nr(pdev->bus);
8663 parent_id.pci.bus = pdev->bus->number;
8664 parent_id.pci.device = PCI_SLOT(pdev->devfn);
8665
8666 np->parent = niu_get_parent(np, &parent_id,
8667 PLAT_TYPE_ATLAS);
8668 if (!np->parent) {
8669 err = -ENOMEM;
8670 goto err_out_free_dev;
8671 }
8672
8673 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
8674 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
8675 val16 |= (PCI_EXP_DEVCTL_CERE |
8676 PCI_EXP_DEVCTL_NFERE |
8677 PCI_EXP_DEVCTL_FERE |
8678 PCI_EXP_DEVCTL_URRE |
8679 PCI_EXP_DEVCTL_RELAX_EN);
8680 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
8681
8682 dma_mask = DMA_44BIT_MASK;
8683 err = pci_set_dma_mask(pdev, dma_mask);
8684 if (!err) {
8685 dev->features |= NETIF_F_HIGHDMA;
8686 err = pci_set_consistent_dma_mask(pdev, dma_mask);
8687 if (err) {
8688 dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
8689 "DMA for consistent allocations, "
8690 "aborting.\n");
8691 goto err_out_release_parent;
8692 }
8693 }
8694 if (err || dma_mask == DMA_32BIT_MASK) {
8695 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8696 if (err) {
8697 dev_err(&pdev->dev, PFX "No usable DMA configuration, "
8698 "aborting.\n");
8699 goto err_out_release_parent;
8700 }
8701 }
8702
8703 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
8704
8705 niureg_base = pci_resource_start(pdev, 0);
8706 niureg_len = pci_resource_len(pdev, 0);
8707
8708 np->regs = ioremap_nocache(niureg_base, niureg_len);
8709 if (!np->regs) {
8710 dev_err(&pdev->dev, PFX "Cannot map device registers, "
8711 "aborting.\n");
8712 err = -ENOMEM;
8713 goto err_out_release_parent;
8714 }
8715
8716 pci_set_master(pdev);
8717 pci_save_state(pdev);
8718
8719 dev->irq = pdev->irq;
8720
8721 niu_assign_netdev_ops(dev);
8722
8723 err = niu_get_invariants(np);
8724 if (err) {
8725 if (err != -ENODEV)
8726 dev_err(&pdev->dev, PFX "Problem fetching invariants "
8727 "of chip, aborting.\n");
8728 goto err_out_iounmap;
8729 }
8730
8731 err = register_netdev(dev);
8732 if (err) {
8733 dev_err(&pdev->dev, PFX "Cannot register net device, "
8734 "aborting.\n");
8735 goto err_out_iounmap;
8736 }
8737
8738 pci_set_drvdata(pdev, dev);
8739
8740 niu_device_announce(np);
8741
8742 return 0;
8743
8744 err_out_iounmap:
8745 if (np->regs) {
8746 iounmap(np->regs);
8747 np->regs = NULL;
8748 }
8749
8750 err_out_release_parent:
8751 niu_put_parent(np);
8752
8753 err_out_free_dev:
8754 free_netdev(dev);
8755
8756 err_out_free_res:
8757 pci_release_regions(pdev);
8758
8759 err_out_disable_pdev:
8760 pci_disable_device(pdev);
8761 pci_set_drvdata(pdev, NULL);
8762
8763 return err;
8764 }
8765
8766 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
8767 {
8768 struct net_device *dev = pci_get_drvdata(pdev);
8769
8770 if (dev) {
8771 struct niu *np = netdev_priv(dev);
8772
8773 unregister_netdev(dev);
8774 if (np->regs) {
8775 iounmap(np->regs);
8776 np->regs = NULL;
8777 }
8778
8779 niu_ldg_free(np);
8780
8781 niu_put_parent(np);
8782
8783 free_netdev(dev);
8784 pci_release_regions(pdev);
8785 pci_disable_device(pdev);
8786 pci_set_drvdata(pdev, NULL);
8787 }
8788 }
8789
8790 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
8791 {
8792 struct net_device *dev = pci_get_drvdata(pdev);
8793 struct niu *np = netdev_priv(dev);
8794 unsigned long flags;
8795
8796 if (!netif_running(dev))
8797 return 0;
8798
8799 flush_scheduled_work();
8800 niu_netif_stop(np);
8801
8802 del_timer_sync(&np->timer);
8803
8804 spin_lock_irqsave(&np->lock, flags);
8805 niu_enable_interrupts(np, 0);
8806 spin_unlock_irqrestore(&np->lock, flags);
8807
8808 netif_device_detach(dev);
8809
8810 spin_lock_irqsave(&np->lock, flags);
8811 niu_stop_hw(np);
8812 spin_unlock_irqrestore(&np->lock, flags);
8813
8814 pci_save_state(pdev);
8815
8816 return 0;
8817 }
8818
8819 static int niu_resume(struct pci_dev *pdev)
8820 {
8821 struct net_device *dev = pci_get_drvdata(pdev);
8822 struct niu *np = netdev_priv(dev);
8823 unsigned long flags;
8824 int err;
8825
8826 if (!netif_running(dev))
8827 return 0;
8828
8829 pci_restore_state(pdev);
8830
8831 netif_device_attach(dev);
8832
8833 spin_lock_irqsave(&np->lock, flags);
8834
8835 err = niu_init_hw(np);
8836 if (!err) {
8837 np->timer.expires = jiffies + HZ;
8838 add_timer(&np->timer);
8839 niu_netif_start(np);
8840 }
8841
8842 spin_unlock_irqrestore(&np->lock, flags);
8843
8844 return err;
8845 }
8846
8847 static struct pci_driver niu_pci_driver = {
8848 .name = DRV_MODULE_NAME,
8849 .id_table = niu_pci_tbl,
8850 .probe = niu_pci_init_one,
8851 .remove = __devexit_p(niu_pci_remove_one),
8852 .suspend = niu_suspend,
8853 .resume = niu_resume,
8854 };
8855
8856 #ifdef CONFIG_SPARC64
8857 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
8858 u64 *dma_addr, gfp_t flag)
8859 {
8860 unsigned long order = get_order(size);
8861 unsigned long page = __get_free_pages(flag, order);
8862
8863 if (page == 0UL)
8864 return NULL;
8865 memset((char *)page, 0, PAGE_SIZE << order);
8866 *dma_addr = __pa(page);
8867
8868 return (void *) page;
8869 }
8870
8871 static void niu_phys_free_coherent(struct device *dev, size_t size,
8872 void *cpu_addr, u64 handle)
8873 {
8874 unsigned long order = get_order(size);
8875
8876 free_pages((unsigned long) cpu_addr, order);
8877 }
8878
8879 static u64 niu_phys_map_page(struct device *dev, struct page *page,
8880 unsigned long offset, size_t size,
8881 enum dma_data_direction direction)
8882 {
8883 return page_to_phys(page) + offset;
8884 }
8885
8886 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
8887 size_t size, enum dma_data_direction direction)
8888 {
8889 /* Nothing to do. */
8890 }
8891
8892 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
8893 size_t size,
8894 enum dma_data_direction direction)
8895 {
8896 return __pa(cpu_addr);
8897 }
8898
8899 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
8900 size_t size,
8901 enum dma_data_direction direction)
8902 {
8903 /* Nothing to do. */
8904 }
8905
8906 static const struct niu_ops niu_phys_ops = {
8907 .alloc_coherent = niu_phys_alloc_coherent,
8908 .free_coherent = niu_phys_free_coherent,
8909 .map_page = niu_phys_map_page,
8910 .unmap_page = niu_phys_unmap_page,
8911 .map_single = niu_phys_map_single,
8912 .unmap_single = niu_phys_unmap_single,
8913 };
8914
8915 static unsigned long res_size(struct resource *r)
8916 {
8917 return r->end - r->start + 1UL;
8918 }
8919
8920 static int __devinit niu_of_probe(struct of_device *op,
8921 const struct of_device_id *match)
8922 {
8923 union niu_parent_id parent_id;
8924 struct net_device *dev;
8925 struct niu *np;
8926 const u32 *reg;
8927 int err;
8928
8929 niu_driver_version();
8930
8931 reg = of_get_property(op->node, "reg", NULL);
8932 if (!reg) {
8933 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
8934 op->node->full_name);
8935 return -ENODEV;
8936 }
8937
8938 dev = niu_alloc_and_init(&op->dev, NULL, op,
8939 &niu_phys_ops, reg[0] & 0x1);
8940 if (!dev) {
8941 err = -ENOMEM;
8942 goto err_out;
8943 }
8944 np = netdev_priv(dev);
8945
8946 memset(&parent_id, 0, sizeof(parent_id));
8947 parent_id.of = of_get_parent(op->node);
8948
8949 np->parent = niu_get_parent(np, &parent_id,
8950 PLAT_TYPE_NIU);
8951 if (!np->parent) {
8952 err = -ENOMEM;
8953 goto err_out_free_dev;
8954 }
8955
8956 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
8957
8958 np->regs = of_ioremap(&op->resource[1], 0,
8959 res_size(&op->resource[1]),
8960 "niu regs");
8961 if (!np->regs) {
8962 dev_err(&op->dev, PFX "Cannot map device registers, "
8963 "aborting.\n");
8964 err = -ENOMEM;
8965 goto err_out_release_parent;
8966 }
8967
8968 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
8969 res_size(&op->resource[2]),
8970 "niu vregs-1");
8971 if (!np->vir_regs_1) {
8972 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
8973 "aborting.\n");
8974 err = -ENOMEM;
8975 goto err_out_iounmap;
8976 }
8977
8978 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
8979 res_size(&op->resource[3]),
8980 "niu vregs-2");
8981 if (!np->vir_regs_2) {
8982 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
8983 "aborting.\n");
8984 err = -ENOMEM;
8985 goto err_out_iounmap;
8986 }
8987
8988 niu_assign_netdev_ops(dev);
8989
8990 err = niu_get_invariants(np);
8991 if (err) {
8992 if (err != -ENODEV)
8993 dev_err(&op->dev, PFX "Problem fetching invariants "
8994 "of chip, aborting.\n");
8995 goto err_out_iounmap;
8996 }
8997
8998 err = register_netdev(dev);
8999 if (err) {
9000 dev_err(&op->dev, PFX "Cannot register net device, "
9001 "aborting.\n");
9002 goto err_out_iounmap;
9003 }
9004
9005 dev_set_drvdata(&op->dev, dev);
9006
9007 niu_device_announce(np);
9008
9009 return 0;
9010
9011 err_out_iounmap:
9012 if (np->vir_regs_1) {
9013 of_iounmap(&op->resource[2], np->vir_regs_1,
9014 res_size(&op->resource[2]));
9015 np->vir_regs_1 = NULL;
9016 }
9017
9018 if (np->vir_regs_2) {
9019 of_iounmap(&op->resource[3], np->vir_regs_2,
9020 res_size(&op->resource[3]));
9021 np->vir_regs_2 = NULL;
9022 }
9023
9024 if (np->regs) {
9025 of_iounmap(&op->resource[1], np->regs,
9026 res_size(&op->resource[1]));
9027 np->regs = NULL;
9028 }
9029
9030 err_out_release_parent:
9031 niu_put_parent(np);
9032
9033 err_out_free_dev:
9034 free_netdev(dev);
9035
9036 err_out:
9037 return err;
9038 }
9039
9040 static int __devexit niu_of_remove(struct of_device *op)
9041 {
9042 struct net_device *dev = dev_get_drvdata(&op->dev);
9043
9044 if (dev) {
9045 struct niu *np = netdev_priv(dev);
9046
9047 unregister_netdev(dev);
9048
9049 if (np->vir_regs_1) {
9050 of_iounmap(&op->resource[2], np->vir_regs_1,
9051 res_size(&op->resource[2]));
9052 np->vir_regs_1 = NULL;
9053 }
9054
9055 if (np->vir_regs_2) {
9056 of_iounmap(&op->resource[3], np->vir_regs_2,
9057 res_size(&op->resource[3]));
9058 np->vir_regs_2 = NULL;
9059 }
9060
9061 if (np->regs) {
9062 of_iounmap(&op->resource[1], np->regs,
9063 res_size(&op->resource[1]));
9064 np->regs = NULL;
9065 }
9066
9067 niu_ldg_free(np);
9068
9069 niu_put_parent(np);
9070
9071 free_netdev(dev);
9072 dev_set_drvdata(&op->dev, NULL);
9073 }
9074 return 0;
9075 }
9076
9077 static struct of_device_id niu_match[] = {
9078 {
9079 .name = "network",
9080 .compatible = "SUNW,niusl",
9081 },
9082 {},
9083 };
9084 MODULE_DEVICE_TABLE(of, niu_match);
9085
9086 static struct of_platform_driver niu_of_driver = {
9087 .name = "niu",
9088 .match_table = niu_match,
9089 .probe = niu_of_probe,
9090 .remove = __devexit_p(niu_of_remove),
9091 };
9092
9093 #endif /* CONFIG_SPARC64 */
9094
9095 static int __init niu_init(void)
9096 {
9097 int err = 0;
9098
9099 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
9100
9101 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
9102
9103 #ifdef CONFIG_SPARC64
9104 err = of_register_driver(&niu_of_driver, &of_bus_type);
9105 #endif
9106
9107 if (!err) {
9108 err = pci_register_driver(&niu_pci_driver);
9109 #ifdef CONFIG_SPARC64
9110 if (err)
9111 of_unregister_driver(&niu_of_driver);
9112 #endif
9113 }
9114
9115 return err;
9116 }
9117
9118 static void __exit niu_exit(void)
9119 {
9120 pci_unregister_driver(&niu_pci_driver);
9121 #ifdef CONFIG_SPARC64
9122 of_unregister_driver(&niu_of_driver);
9123 #endif
9124 }
9125
9126 module_init(niu_init);
9127 module_exit(niu_exit);
Stable & featurefull patchset based on Linus's git branch