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[S390] lowcore: Change type of lowcores softirq_pending to __u32.
[linux-2.6/next.git] / drivers / net / niu.c
blobd11ba61baa4f1611a3de3afdf6513ca7b29ad10f
1 /* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4 */
5
6 #include <linux/module.h>
7 #include <linux/init.h>
8 #include <linux/pci.h>
9 #include <linux/dma-mapping.h>
10 #include <linux/netdevice.h>
11 #include <linux/ethtool.h>
12 #include <linux/etherdevice.h>
13 #include <linux/platform_device.h>
14 #include <linux/delay.h>
15 #include <linux/bitops.h>
16 #include <linux/mii.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ip.h>
20 #include <linux/in.h>
21 #include <linux/ipv6.h>
22 #include <linux/log2.h>
23 #include <linux/jiffies.h>
24 #include <linux/crc32.h>
25
26 #include <linux/io.h>
27
28 #ifdef CONFIG_SPARC64
29 #include <linux/of_device.h>
30 #endif
31
32 #include "niu.h"
33
34 #define DRV_MODULE_NAME "niu"
35 #define PFX DRV_MODULE_NAME ": "
36 #define DRV_MODULE_VERSION "0.7"
37 #define DRV_MODULE_RELDATE "February 18, 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 __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
117 u64 bits, int limit, int delay)
118 {
119 while (--limit >= 0) {
120 u64 val = nr64_mac(reg);
121
122 if (!(val & bits))
123 break;
124 udelay(delay);
125 }
126 if (limit < 0)
127 return -ENODEV;
128 return 0;
129 }
130
131 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
132 u64 bits, int limit, int delay,
133 const char *reg_name)
134 {
135 int err;
136
137 nw64_mac(reg, bits);
138 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
139 if (err)
140 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
141 "would not clear, val[%llx]\n",
142 np->dev->name, (unsigned long long) bits, reg_name,
143 (unsigned long long) nr64_mac(reg));
144 return err;
145 }
146
147 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
148 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
149 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
150 })
151
152 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
153 u64 bits, int limit, int delay)
154 {
155 while (--limit >= 0) {
156 u64 val = nr64_ipp(reg);
157
158 if (!(val & bits))
159 break;
160 udelay(delay);
161 }
162 if (limit < 0)
163 return -ENODEV;
164 return 0;
165 }
166
167 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
168 u64 bits, int limit, int delay,
169 const char *reg_name)
170 {
171 int err;
172 u64 val;
173
174 val = nr64_ipp(reg);
175 val |= bits;
176 nw64_ipp(reg, val);
177
178 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
179 if (err)
180 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
181 "would not clear, val[%llx]\n",
182 np->dev->name, (unsigned long long) bits, reg_name,
183 (unsigned long long) nr64_ipp(reg));
184 return err;
185 }
186
187 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
188 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
189 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
190 })
191
192 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
193 u64 bits, int limit, int delay)
194 {
195 while (--limit >= 0) {
196 u64 val = nr64(reg);
197
198 if (!(val & bits))
199 break;
200 udelay(delay);
201 }
202 if (limit < 0)
203 return -ENODEV;
204 return 0;
205 }
206
207 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
208 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
209 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
210 })
211
212 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
213 u64 bits, int limit, int delay,
214 const char *reg_name)
215 {
216 int err;
217
218 nw64(reg, bits);
219 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
220 if (err)
221 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
222 "would not clear, val[%llx]\n",
223 np->dev->name, (unsigned long long) bits, reg_name,
224 (unsigned long long) nr64(reg));
225 return err;
226 }
227
228 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
229 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
230 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
231 })
232
233 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
234 {
235 u64 val = (u64) lp->timer;
236
237 if (on)
238 val |= LDG_IMGMT_ARM;
239
240 nw64(LDG_IMGMT(lp->ldg_num), val);
241 }
242
243 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
244 {
245 unsigned long mask_reg, bits;
246 u64 val;
247
248 if (ldn < 0 || ldn > LDN_MAX)
249 return -EINVAL;
250
251 if (ldn < 64) {
252 mask_reg = LD_IM0(ldn);
253 bits = LD_IM0_MASK;
254 } else {
255 mask_reg = LD_IM1(ldn - 64);
256 bits = LD_IM1_MASK;
257 }
258
259 val = nr64(mask_reg);
260 if (on)
261 val &= ~bits;
262 else
263 val |= bits;
264 nw64(mask_reg, val);
265
266 return 0;
267 }
268
269 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
270 {
271 struct niu_parent *parent = np->parent;
272 int i;
273
274 for (i = 0; i <= LDN_MAX; i++) {
275 int err;
276
277 if (parent->ldg_map[i] != lp->ldg_num)
278 continue;
279
280 err = niu_ldn_irq_enable(np, i, on);
281 if (err)
282 return err;
283 }
284 return 0;
285 }
286
287 static int niu_enable_interrupts(struct niu *np, int on)
288 {
289 int i;
290
291 for (i = 0; i < np->num_ldg; i++) {
292 struct niu_ldg *lp = &np->ldg[i];
293 int err;
294
295 err = niu_enable_ldn_in_ldg(np, lp, on);
296 if (err)
297 return err;
298 }
299 for (i = 0; i < np->num_ldg; i++)
300 niu_ldg_rearm(np, &np->ldg[i], on);
301
302 return 0;
303 }
304
305 static u32 phy_encode(u32 type, int port)
306 {
307 return (type << (port * 2));
308 }
309
310 static u32 phy_decode(u32 val, int port)
311 {
312 return (val >> (port * 2)) & PORT_TYPE_MASK;
313 }
314
315 static int mdio_wait(struct niu *np)
316 {
317 int limit = 1000;
318 u64 val;
319
320 while (--limit > 0) {
321 val = nr64(MIF_FRAME_OUTPUT);
322 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
323 return val & MIF_FRAME_OUTPUT_DATA;
324
325 udelay(10);
326 }
327
328 return -ENODEV;
329 }
330
331 static int mdio_read(struct niu *np, int port, int dev, int reg)
332 {
333 int err;
334
335 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
336 err = mdio_wait(np);
337 if (err < 0)
338 return err;
339
340 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
341 return mdio_wait(np);
342 }
343
344 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
345 {
346 int err;
347
348 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
349 err = mdio_wait(np);
350 if (err < 0)
351 return err;
352
353 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
354 err = mdio_wait(np);
355 if (err < 0)
356 return err;
357
358 return 0;
359 }
360
361 static int mii_read(struct niu *np, int port, int reg)
362 {
363 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
364 return mdio_wait(np);
365 }
366
367 static int mii_write(struct niu *np, int port, int reg, int data)
368 {
369 int err;
370
371 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
372 err = mdio_wait(np);
373 if (err < 0)
374 return err;
375
376 return 0;
377 }
378
379 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
380 {
381 int err;
382
383 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
384 ESR2_TI_PLL_TX_CFG_L(channel),
385 val & 0xffff);
386 if (!err)
387 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
388 ESR2_TI_PLL_TX_CFG_H(channel),
389 val >> 16);
390 return err;
391 }
392
393 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
394 {
395 int err;
396
397 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
398 ESR2_TI_PLL_RX_CFG_L(channel),
399 val & 0xffff);
400 if (!err)
401 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
402 ESR2_TI_PLL_RX_CFG_H(channel),
403 val >> 16);
404 return err;
405 }
406
407 /* Mode is always 10G fiber. */
408 static int serdes_init_niu(struct niu *np)
409 {
410 struct niu_link_config *lp = &np->link_config;
411 u32 tx_cfg, rx_cfg;
412 unsigned long i;
413
414 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
415 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
416 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
417 PLL_RX_CFG_EQ_LP_ADAPTIVE);
418
419 if (lp->loopback_mode == LOOPBACK_PHY) {
420 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
421
422 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
423 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
424
425 tx_cfg |= PLL_TX_CFG_ENTEST;
426 rx_cfg |= PLL_RX_CFG_ENTEST;
427 }
428
429 /* Initialize all 4 lanes of the SERDES. */
430 for (i = 0; i < 4; i++) {
431 int err = esr2_set_tx_cfg(np, i, tx_cfg);
432 if (err)
433 return err;
434 }
435
436 for (i = 0; i < 4; i++) {
437 int err = esr2_set_rx_cfg(np, i, rx_cfg);
438 if (err)
439 return err;
440 }
441
442 return 0;
443 }
444
445 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
446 {
447 int err;
448
449 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
450 if (err >= 0) {
451 *val = (err & 0xffff);
452 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
453 ESR_RXTX_CTRL_H(chan));
454 if (err >= 0)
455 *val |= ((err & 0xffff) << 16);
456 err = 0;
457 }
458 return err;
459 }
460
461 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
462 {
463 int err;
464
465 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
466 ESR_GLUE_CTRL0_L(chan));
467 if (err >= 0) {
468 *val = (err & 0xffff);
469 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
470 ESR_GLUE_CTRL0_H(chan));
471 if (err >= 0) {
472 *val |= ((err & 0xffff) << 16);
473 err = 0;
474 }
475 }
476 return err;
477 }
478
479 static int esr_read_reset(struct niu *np, u32 *val)
480 {
481 int err;
482
483 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
484 ESR_RXTX_RESET_CTRL_L);
485 if (err >= 0) {
486 *val = (err & 0xffff);
487 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
488 ESR_RXTX_RESET_CTRL_H);
489 if (err >= 0) {
490 *val |= ((err & 0xffff) << 16);
491 err = 0;
492 }
493 }
494 return err;
495 }
496
497 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
498 {
499 int err;
500
501 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
502 ESR_RXTX_CTRL_L(chan), val & 0xffff);
503 if (!err)
504 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
505 ESR_RXTX_CTRL_H(chan), (val >> 16));
506 return err;
507 }
508
509 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
510 {
511 int err;
512
513 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
514 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
515 if (!err)
516 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
517 ESR_GLUE_CTRL0_H(chan), (val >> 16));
518 return err;
519 }
520
521 static int esr_reset(struct niu *np)
522 {
523 u32 reset;
524 int err;
525
526 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
527 ESR_RXTX_RESET_CTRL_L, 0x0000);
528 if (err)
529 return err;
530 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
531 ESR_RXTX_RESET_CTRL_H, 0xffff);
532 if (err)
533 return err;
534 udelay(200);
535
536 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
537 ESR_RXTX_RESET_CTRL_L, 0xffff);
538 if (err)
539 return err;
540 udelay(200);
541
542 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
543 ESR_RXTX_RESET_CTRL_H, 0x0000);
544 if (err)
545 return err;
546 udelay(200);
547
548 err = esr_read_reset(np, &reset);
549 if (err)
550 return err;
551 if (reset != 0) {
552 dev_err(np->device, PFX "Port %u ESR_RESET "
553 "did not clear [%08x]\n",
554 np->port, reset);
555 return -ENODEV;
556 }
557
558 return 0;
559 }
560
561 static int serdes_init_10g(struct niu *np)
562 {
563 struct niu_link_config *lp = &np->link_config;
564 unsigned long ctrl_reg, test_cfg_reg, i;
565 u64 ctrl_val, test_cfg_val, sig, mask, val;
566 int err;
567
568 switch (np->port) {
569 case 0:
570 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
571 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
572 break;
573 case 1:
574 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
575 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
576 break;
577
578 default:
579 return -EINVAL;
580 }
581 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
582 ENET_SERDES_CTRL_SDET_1 |
583 ENET_SERDES_CTRL_SDET_2 |
584 ENET_SERDES_CTRL_SDET_3 |
585 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
586 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
587 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
588 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
589 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
590 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
591 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
592 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
593 test_cfg_val = 0;
594
595 if (lp->loopback_mode == LOOPBACK_PHY) {
596 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
597 ENET_SERDES_TEST_MD_0_SHIFT) |
598 (ENET_TEST_MD_PAD_LOOPBACK <<
599 ENET_SERDES_TEST_MD_1_SHIFT) |
600 (ENET_TEST_MD_PAD_LOOPBACK <<
601 ENET_SERDES_TEST_MD_2_SHIFT) |
602 (ENET_TEST_MD_PAD_LOOPBACK <<
603 ENET_SERDES_TEST_MD_3_SHIFT));
604 }
605
606 nw64(ctrl_reg, ctrl_val);
607 nw64(test_cfg_reg, test_cfg_val);
608
609 /* Initialize all 4 lanes of the SERDES. */
610 for (i = 0; i < 4; i++) {
611 u32 rxtx_ctrl, glue0;
612
613 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
614 if (err)
615 return err;
616 err = esr_read_glue0(np, i, &glue0);
617 if (err)
618 return err;
619
620 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
621 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
622 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
623
624 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
625 ESR_GLUE_CTRL0_THCNT |
626 ESR_GLUE_CTRL0_BLTIME);
627 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
628 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
629 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
630 (BLTIME_300_CYCLES <<
631 ESR_GLUE_CTRL0_BLTIME_SHIFT));
632
633 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
634 if (err)
635 return err;
636 err = esr_write_glue0(np, i, glue0);
637 if (err)
638 return err;
639 }
640
641 err = esr_reset(np);
642 if (err)
643 return err;
644
645 sig = nr64(ESR_INT_SIGNALS);
646 switch (np->port) {
647 case 0:
648 mask = ESR_INT_SIGNALS_P0_BITS;
649 val = (ESR_INT_SRDY0_P0 |
650 ESR_INT_DET0_P0 |
651 ESR_INT_XSRDY_P0 |
652 ESR_INT_XDP_P0_CH3 |
653 ESR_INT_XDP_P0_CH2 |
654 ESR_INT_XDP_P0_CH1 |
655 ESR_INT_XDP_P0_CH0);
656 break;
657
658 case 1:
659 mask = ESR_INT_SIGNALS_P1_BITS;
660 val = (ESR_INT_SRDY0_P1 |
661 ESR_INT_DET0_P1 |
662 ESR_INT_XSRDY_P1 |
663 ESR_INT_XDP_P1_CH3 |
664 ESR_INT_XDP_P1_CH2 |
665 ESR_INT_XDP_P1_CH1 |
666 ESR_INT_XDP_P1_CH0);
667 break;
668
669 default:
670 return -EINVAL;
671 }
672
673 if ((sig & mask) != val) {
674 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
675 "[%08x]\n", np->port, (int) (sig & mask), (int) val);
676 return -ENODEV;
677 }
678
679 return 0;
680 }
681
682 static int serdes_init_1g(struct niu *np)
683 {
684 u64 val;
685
686 val = nr64(ENET_SERDES_1_PLL_CFG);
687 val &= ~ENET_SERDES_PLL_FBDIV2;
688 switch (np->port) {
689 case 0:
690 val |= ENET_SERDES_PLL_HRATE0;
691 break;
692 case 1:
693 val |= ENET_SERDES_PLL_HRATE1;
694 break;
695 case 2:
696 val |= ENET_SERDES_PLL_HRATE2;
697 break;
698 case 3:
699 val |= ENET_SERDES_PLL_HRATE3;
700 break;
701 default:
702 return -EINVAL;
703 }
704 nw64(ENET_SERDES_1_PLL_CFG, val);
705
706 return 0;
707 }
708
709 static int bcm8704_reset(struct niu *np)
710 {
711 int err, limit;
712
713 err = mdio_read(np, np->phy_addr,
714 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
715 if (err < 0)
716 return err;
717 err |= BMCR_RESET;
718 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
719 MII_BMCR, err);
720 if (err)
721 return err;
722
723 limit = 1000;
724 while (--limit >= 0) {
725 err = mdio_read(np, np->phy_addr,
726 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
727 if (err < 0)
728 return err;
729 if (!(err & BMCR_RESET))
730 break;
731 }
732 if (limit < 0) {
733 dev_err(np->device, PFX "Port %u PHY will not reset "
734 "(bmcr=%04x)\n", np->port, (err & 0xffff));
735 return -ENODEV;
736 }
737 return 0;
738 }
739
740 /* When written, certain PHY registers need to be read back twice
741 * in order for the bits to settle properly.
742 */
743 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
744 {
745 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
746 if (err < 0)
747 return err;
748 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
749 if (err < 0)
750 return err;
751 return 0;
752 }
753
754 static int bcm8704_init_user_dev3(struct niu *np)
755 {
756 int err;
757
758 err = mdio_write(np, np->phy_addr,
759 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
760 (USER_CONTROL_OPTXRST_LVL |
761 USER_CONTROL_OPBIASFLT_LVL |
762 USER_CONTROL_OBTMPFLT_LVL |
763 USER_CONTROL_OPPRFLT_LVL |
764 USER_CONTROL_OPTXFLT_LVL |
765 USER_CONTROL_OPRXLOS_LVL |
766 USER_CONTROL_OPRXFLT_LVL |
767 USER_CONTROL_OPTXON_LVL |
768 (0x3f << USER_CONTROL_RES1_SHIFT)));
769 if (err)
770 return err;
771
772 err = mdio_write(np, np->phy_addr,
773 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
774 (USER_PMD_TX_CTL_XFP_CLKEN |
775 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
776 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
777 USER_PMD_TX_CTL_TSCK_LPWREN));
778 if (err)
779 return err;
780
781 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
782 if (err)
783 return err;
784 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
785 if (err)
786 return err;
787
788 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
789 BCM8704_USER_OPT_DIGITAL_CTRL);
790 if (err < 0)
791 return err;
792 err &= ~USER_ODIG_CTRL_GPIOS;
793 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
794 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
795 BCM8704_USER_OPT_DIGITAL_CTRL, err);
796 if (err)
797 return err;
798
799 mdelay(1000);
800
801 return 0;
802 }
803
804 static int mrvl88x2011_act_led(struct niu *np, int val)
805 {
806 int err;
807
808 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
809 MRVL88X2011_LED_8_TO_11_CTL);
810 if (err < 0)
811 return err;
812
813 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
814 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
815
816 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
817 MRVL88X2011_LED_8_TO_11_CTL, err);
818 }
819
820 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
821 {
822 int err;
823
824 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
825 MRVL88X2011_LED_BLINK_CTL);
826 if (err >= 0) {
827 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
828 err |= (rate << 4);
829
830 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
831 MRVL88X2011_LED_BLINK_CTL, err);
832 }
833
834 return err;
835 }
836
837 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
838 {
839 int err;
840
841 /* Set LED functions */
842 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
843 if (err)
844 return err;
845
846 /* led activity */
847 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
848 if (err)
849 return err;
850
851 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
852 MRVL88X2011_GENERAL_CTL);
853 if (err < 0)
854 return err;
855
856 err |= MRVL88X2011_ENA_XFPREFCLK;
857
858 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
859 MRVL88X2011_GENERAL_CTL, err);
860 if (err < 0)
861 return err;
862
863 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
864 MRVL88X2011_PMA_PMD_CTL_1);
865 if (err < 0)
866 return err;
867
868 if (np->link_config.loopback_mode == LOOPBACK_MAC)
869 err |= MRVL88X2011_LOOPBACK;
870 else
871 err &= ~MRVL88X2011_LOOPBACK;
872
873 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
874 MRVL88X2011_PMA_PMD_CTL_1, err);
875 if (err < 0)
876 return err;
877
878 /* Enable PMD */
879 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
880 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
881 }
882
883 static int xcvr_init_10g_bcm8704(struct niu *np)
884 {
885 struct niu_link_config *lp = &np->link_config;
886 u16 analog_stat0, tx_alarm_status;
887 int err;
888
889 err = bcm8704_reset(np);
890 if (err)
891 return err;
892
893 err = bcm8704_init_user_dev3(np);
894 if (err)
895 return err;
896
897 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
898 MII_BMCR);
899 if (err < 0)
900 return err;
901 err &= ~BMCR_LOOPBACK;
902
903 if (lp->loopback_mode == LOOPBACK_MAC)
904 err |= BMCR_LOOPBACK;
905
906 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
907 MII_BMCR, err);
908 if (err)
909 return err;
910
911 #if 1
912 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
913 MII_STAT1000);
914 if (err < 0)
915 return err;
916 pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
917 np->port, err);
918
919 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
920 if (err < 0)
921 return err;
922 pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
923 np->port, err);
924
925 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
926 MII_NWAYTEST);
927 if (err < 0)
928 return err;
929 pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
930 np->port, err);
931 #endif
932
933 /* XXX dig this out it might not be so useful XXX */
934 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
935 BCM8704_USER_ANALOG_STATUS0);
936 if (err < 0)
937 return err;
938 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
939 BCM8704_USER_ANALOG_STATUS0);
940 if (err < 0)
941 return err;
942 analog_stat0 = err;
943
944 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
945 BCM8704_USER_TX_ALARM_STATUS);
946 if (err < 0)
947 return err;
948 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
949 BCM8704_USER_TX_ALARM_STATUS);
950 if (err < 0)
951 return err;
952 tx_alarm_status = err;
953
954 if (analog_stat0 != 0x03fc) {
955 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
956 pr_info(PFX "Port %u cable not connected "
957 "or bad cable.\n", np->port);
958 } else if (analog_stat0 == 0x639c) {
959 pr_info(PFX "Port %u optical module is bad "
960 "or missing.\n", np->port);
961 }
962 }
963
964 return 0;
965 }
966
967 static int xcvr_init_10g(struct niu *np)
968 {
969 int phy_id, err;
970 u64 val;
971
972 val = nr64_mac(XMAC_CONFIG);
973 val &= ~XMAC_CONFIG_LED_POLARITY;
974 val |= XMAC_CONFIG_FORCE_LED_ON;
975 nw64_mac(XMAC_CONFIG, val);
976
977 /* XXX shared resource, lock parent XXX */
978 val = nr64(MIF_CONFIG);
979 val |= MIF_CONFIG_INDIRECT_MODE;
980 nw64(MIF_CONFIG, val);
981
982 phy_id = phy_decode(np->parent->port_phy, np->port);
983 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
984
985 /* handle different phy types */
986 switch (phy_id & NIU_PHY_ID_MASK) {
987 case NIU_PHY_ID_MRVL88X2011:
988 err = xcvr_init_10g_mrvl88x2011(np);
989 break;
990
991 default: /* bcom 8704 */
992 err = xcvr_init_10g_bcm8704(np);
993 break;
994 }
995
996 return 0;
997 }
998
999 static int mii_reset(struct niu *np)
1000 {
1001 int limit, err;
1002
1003 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1004 if (err)
1005 return err;
1006
1007 limit = 1000;
1008 while (--limit >= 0) {
1009 udelay(500);
1010 err = mii_read(np, np->phy_addr, MII_BMCR);
1011 if (err < 0)
1012 return err;
1013 if (!(err & BMCR_RESET))
1014 break;
1015 }
1016 if (limit < 0) {
1017 dev_err(np->device, PFX "Port %u MII would not reset, "
1018 "bmcr[%04x]\n", np->port, err);
1019 return -ENODEV;
1020 }
1021
1022 return 0;
1023 }
1024
1025 static int mii_init_common(struct niu *np)
1026 {
1027 struct niu_link_config *lp = &np->link_config;
1028 u16 bmcr, bmsr, adv, estat;
1029 int err;
1030
1031 err = mii_reset(np);
1032 if (err)
1033 return err;
1034
1035 err = mii_read(np, np->phy_addr, MII_BMSR);
1036 if (err < 0)
1037 return err;
1038 bmsr = err;
1039
1040 estat = 0;
1041 if (bmsr & BMSR_ESTATEN) {
1042 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1043 if (err < 0)
1044 return err;
1045 estat = err;
1046 }
1047
1048 bmcr = 0;
1049 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1050 if (err)
1051 return err;
1052
1053 if (lp->loopback_mode == LOOPBACK_MAC) {
1054 bmcr |= BMCR_LOOPBACK;
1055 if (lp->active_speed == SPEED_1000)
1056 bmcr |= BMCR_SPEED1000;
1057 if (lp->active_duplex == DUPLEX_FULL)
1058 bmcr |= BMCR_FULLDPLX;
1059 }
1060
1061 if (lp->loopback_mode == LOOPBACK_PHY) {
1062 u16 aux;
1063
1064 aux = (BCM5464R_AUX_CTL_EXT_LB |
1065 BCM5464R_AUX_CTL_WRITE_1);
1066 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1067 if (err)
1068 return err;
1069 }
1070
1071 /* XXX configurable XXX */
1072 /* XXX for now don't advertise half-duplex or asym pause... XXX */
1073 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1074 if (bmsr & BMSR_10FULL)
1075 adv |= ADVERTISE_10FULL;
1076 if (bmsr & BMSR_100FULL)
1077 adv |= ADVERTISE_100FULL;
1078 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1079 if (err)
1080 return err;
1081
1082 if (bmsr & BMSR_ESTATEN) {
1083 u16 ctrl1000 = 0;
1084
1085 if (estat & ESTATUS_1000_TFULL)
1086 ctrl1000 |= ADVERTISE_1000FULL;
1087 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1088 if (err)
1089 return err;
1090 }
1091 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1092
1093 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1094 if (err)
1095 return err;
1096
1097 err = mii_read(np, np->phy_addr, MII_BMCR);
1098 if (err < 0)
1099 return err;
1100 err = mii_read(np, np->phy_addr, MII_BMSR);
1101 if (err < 0)
1102 return err;
1103 #if 0
1104 pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1105 np->port, bmcr, bmsr);
1106 #endif
1107
1108 return 0;
1109 }
1110
1111 static int xcvr_init_1g(struct niu *np)
1112 {
1113 u64 val;
1114
1115 /* XXX shared resource, lock parent XXX */
1116 val = nr64(MIF_CONFIG);
1117 val &= ~MIF_CONFIG_INDIRECT_MODE;
1118 nw64(MIF_CONFIG, val);
1119
1120 return mii_init_common(np);
1121 }
1122
1123 static int niu_xcvr_init(struct niu *np)
1124 {
1125 const struct niu_phy_ops *ops = np->phy_ops;
1126 int err;
1127
1128 err = 0;
1129 if (ops->xcvr_init)
1130 err = ops->xcvr_init(np);
1131
1132 return err;
1133 }
1134
1135 static int niu_serdes_init(struct niu *np)
1136 {
1137 const struct niu_phy_ops *ops = np->phy_ops;
1138 int err;
1139
1140 err = 0;
1141 if (ops->serdes_init)
1142 err = ops->serdes_init(np);
1143
1144 return err;
1145 }
1146
1147 static void niu_init_xif(struct niu *);
1148 static void niu_handle_led(struct niu *, int status);
1149
1150 static int niu_link_status_common(struct niu *np, int link_up)
1151 {
1152 struct niu_link_config *lp = &np->link_config;
1153 struct net_device *dev = np->dev;
1154 unsigned long flags;
1155
1156 if (!netif_carrier_ok(dev) && link_up) {
1157 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1158 dev->name,
1159 (lp->active_speed == SPEED_10000 ?
1160 "10Gb/sec" :
1161 (lp->active_speed == SPEED_1000 ?
1162 "1Gb/sec" :
1163 (lp->active_speed == SPEED_100 ?
1164 "100Mbit/sec" : "10Mbit/sec"))),
1165 (lp->active_duplex == DUPLEX_FULL ?
1166 "full" : "half"));
1167
1168 spin_lock_irqsave(&np->lock, flags);
1169 niu_init_xif(np);
1170 niu_handle_led(np, 1);
1171 spin_unlock_irqrestore(&np->lock, flags);
1172
1173 netif_carrier_on(dev);
1174 } else if (netif_carrier_ok(dev) && !link_up) {
1175 niuwarn(LINK, "%s: Link is down\n", dev->name);
1176 spin_lock_irqsave(&np->lock, flags);
1177 niu_handle_led(np, 0);
1178 spin_unlock_irqrestore(&np->lock, flags);
1179 netif_carrier_off(dev);
1180 }
1181
1182 return 0;
1183 }
1184
1185 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1186 {
1187 int err, link_up, pma_status, pcs_status;
1188
1189 link_up = 0;
1190
1191 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1192 MRVL88X2011_10G_PMD_STATUS_2);
1193 if (err < 0)
1194 goto out;
1195
1196 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1197 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1198 MRVL88X2011_PMA_PMD_STATUS_1);
1199 if (err < 0)
1200 goto out;
1201
1202 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1203
1204 /* Check PMC Register : 3.0001.2 == 1: read twice */
1205 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1206 MRVL88X2011_PMA_PMD_STATUS_1);
1207 if (err < 0)
1208 goto out;
1209
1210 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1211 MRVL88X2011_PMA_PMD_STATUS_1);
1212 if (err < 0)
1213 goto out;
1214
1215 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1216
1217 /* Check XGXS Register : 4.0018.[0-3,12] */
1218 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1219 MRVL88X2011_10G_XGXS_LANE_STAT);
1220 if (err < 0)
1221 goto out;
1222
1223 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1224 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1225 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1226 0x800))
1227 link_up = (pma_status && pcs_status) ? 1 : 0;
1228
1229 np->link_config.active_speed = SPEED_10000;
1230 np->link_config.active_duplex = DUPLEX_FULL;
1231 err = 0;
1232 out:
1233 mrvl88x2011_act_led(np, (link_up ?
1234 MRVL88X2011_LED_CTL_PCS_ACT :
1235 MRVL88X2011_LED_CTL_OFF));
1236
1237 *link_up_p = link_up;
1238 return err;
1239 }
1240
1241 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
1242 {
1243 int err, link_up;
1244
1245 link_up = 0;
1246
1247 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1248 BCM8704_PMD_RCV_SIGDET);
1249 if (err < 0)
1250 goto out;
1251 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1252 err = 0;
1253 goto out;
1254 }
1255
1256 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1257 BCM8704_PCS_10G_R_STATUS);
1258 if (err < 0)
1259 goto out;
1260 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1261 err = 0;
1262 goto out;
1263 }
1264
1265 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1266 BCM8704_PHYXS_XGXS_LANE_STAT);
1267 if (err < 0)
1268 goto out;
1269
1270 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1271 PHYXS_XGXS_LANE_STAT_MAGIC |
1272 PHYXS_XGXS_LANE_STAT_LANE3 |
1273 PHYXS_XGXS_LANE_STAT_LANE2 |
1274 PHYXS_XGXS_LANE_STAT_LANE1 |
1275 PHYXS_XGXS_LANE_STAT_LANE0)) {
1276 err = 0;
1277 goto out;
1278 }
1279
1280 link_up = 1;
1281 np->link_config.active_speed = SPEED_10000;
1282 np->link_config.active_duplex = DUPLEX_FULL;
1283 err = 0;
1284
1285 out:
1286 *link_up_p = link_up;
1287 return err;
1288 }
1289
1290 static int link_status_10g(struct niu *np, int *link_up_p)
1291 {
1292 unsigned long flags;
1293 int err = -EINVAL;
1294
1295 spin_lock_irqsave(&np->lock, flags);
1296
1297 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
1298 int phy_id;
1299
1300 phy_id = phy_decode(np->parent->port_phy, np->port);
1301 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1302
1303 /* handle different phy types */
1304 switch (phy_id & NIU_PHY_ID_MASK) {
1305 case NIU_PHY_ID_MRVL88X2011:
1306 err = link_status_10g_mrvl(np, link_up_p);
1307 break;
1308
1309 default: /* bcom 8704 */
1310 err = link_status_10g_bcom(np, link_up_p);
1311 break;
1312 }
1313 }
1314
1315 spin_unlock_irqrestore(&np->lock, flags);
1316
1317 return err;
1318 }
1319
1320 static int link_status_1g(struct niu *np, int *link_up_p)
1321 {
1322 struct niu_link_config *lp = &np->link_config;
1323 u16 current_speed, bmsr;
1324 unsigned long flags;
1325 u8 current_duplex;
1326 int err, link_up;
1327
1328 link_up = 0;
1329 current_speed = SPEED_INVALID;
1330 current_duplex = DUPLEX_INVALID;
1331
1332 spin_lock_irqsave(&np->lock, flags);
1333
1334 err = -EINVAL;
1335 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1336 goto out;
1337
1338 err = mii_read(np, np->phy_addr, MII_BMSR);
1339 if (err < 0)
1340 goto out;
1341
1342 bmsr = err;
1343 if (bmsr & BMSR_LSTATUS) {
1344 u16 adv, lpa, common, estat;
1345
1346 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1347 if (err < 0)
1348 goto out;
1349 adv = err;
1350
1351 err = mii_read(np, np->phy_addr, MII_LPA);
1352 if (err < 0)
1353 goto out;
1354 lpa = err;
1355
1356 common = adv & lpa;
1357
1358 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1359 if (err < 0)
1360 goto out;
1361 estat = err;
1362
1363 link_up = 1;
1364 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
1365 current_speed = SPEED_1000;
1366 if (estat & ESTATUS_1000_TFULL)
1367 current_duplex = DUPLEX_FULL;
1368 else
1369 current_duplex = DUPLEX_HALF;
1370 } else {
1371 if (common & ADVERTISE_100BASE4) {
1372 current_speed = SPEED_100;
1373 current_duplex = DUPLEX_HALF;
1374 } else if (common & ADVERTISE_100FULL) {
1375 current_speed = SPEED_100;
1376 current_duplex = DUPLEX_FULL;
1377 } else if (common & ADVERTISE_100HALF) {
1378 current_speed = SPEED_100;
1379 current_duplex = DUPLEX_HALF;
1380 } else if (common & ADVERTISE_10FULL) {
1381 current_speed = SPEED_10;
1382 current_duplex = DUPLEX_FULL;
1383 } else if (common & ADVERTISE_10HALF) {
1384 current_speed = SPEED_10;
1385 current_duplex = DUPLEX_HALF;
1386 } else
1387 link_up = 0;
1388 }
1389 }
1390 lp->active_speed = current_speed;
1391 lp->active_duplex = current_duplex;
1392 err = 0;
1393
1394 out:
1395 spin_unlock_irqrestore(&np->lock, flags);
1396
1397 *link_up_p = link_up;
1398 return err;
1399 }
1400
1401 static int niu_link_status(struct niu *np, int *link_up_p)
1402 {
1403 const struct niu_phy_ops *ops = np->phy_ops;
1404 int err;
1405
1406 err = 0;
1407 if (ops->link_status)
1408 err = ops->link_status(np, link_up_p);
1409
1410 return err;
1411 }
1412
1413 static void niu_timer(unsigned long __opaque)
1414 {
1415 struct niu *np = (struct niu *) __opaque;
1416 unsigned long off;
1417 int err, link_up;
1418
1419 err = niu_link_status(np, &link_up);
1420 if (!err)
1421 niu_link_status_common(np, link_up);
1422
1423 if (netif_carrier_ok(np->dev))
1424 off = 5 * HZ;
1425 else
1426 off = 1 * HZ;
1427 np->timer.expires = jiffies + off;
1428
1429 add_timer(&np->timer);
1430 }
1431
1432 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
1433 .serdes_init = serdes_init_niu,
1434 .xcvr_init = xcvr_init_10g,
1435 .link_status = link_status_10g,
1436 };
1437
1438 static const struct niu_phy_ops phy_ops_10g_fiber = {
1439 .serdes_init = serdes_init_10g,
1440 .xcvr_init = xcvr_init_10g,
1441 .link_status = link_status_10g,
1442 };
1443
1444 static const struct niu_phy_ops phy_ops_10g_copper = {
1445 .serdes_init = serdes_init_10g,
1446 .link_status = link_status_10g, /* XXX */
1447 };
1448
1449 static const struct niu_phy_ops phy_ops_1g_fiber = {
1450 .serdes_init = serdes_init_1g,
1451 .xcvr_init = xcvr_init_1g,
1452 .link_status = link_status_1g,
1453 };
1454
1455 static const struct niu_phy_ops phy_ops_1g_copper = {
1456 .xcvr_init = xcvr_init_1g,
1457 .link_status = link_status_1g,
1458 };
1459
1460 struct niu_phy_template {
1461 const struct niu_phy_ops *ops;
1462 u32 phy_addr_base;
1463 };
1464
1465 static const struct niu_phy_template phy_template_niu = {
1466 .ops = &phy_ops_10g_fiber_niu,
1467 .phy_addr_base = 16,
1468 };
1469
1470 static const struct niu_phy_template phy_template_10g_fiber = {
1471 .ops = &phy_ops_10g_fiber,
1472 .phy_addr_base = 8,
1473 };
1474
1475 static const struct niu_phy_template phy_template_10g_copper = {
1476 .ops = &phy_ops_10g_copper,
1477 .phy_addr_base = 10,
1478 };
1479
1480 static const struct niu_phy_template phy_template_1g_fiber = {
1481 .ops = &phy_ops_1g_fiber,
1482 .phy_addr_base = 0,
1483 };
1484
1485 static const struct niu_phy_template phy_template_1g_copper = {
1486 .ops = &phy_ops_1g_copper,
1487 .phy_addr_base = 0,
1488 };
1489
1490 static int niu_determine_phy_disposition(struct niu *np)
1491 {
1492 struct niu_parent *parent = np->parent;
1493 u8 plat_type = parent->plat_type;
1494 const struct niu_phy_template *tp;
1495 u32 phy_addr_off = 0;
1496
1497 if (plat_type == PLAT_TYPE_NIU) {
1498 tp = &phy_template_niu;
1499 phy_addr_off += np->port;
1500 } else {
1501 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
1502 case 0:
1503 /* 1G copper */
1504 tp = &phy_template_1g_copper;
1505 if (plat_type == PLAT_TYPE_VF_P0)
1506 phy_addr_off = 10;
1507 else if (plat_type == PLAT_TYPE_VF_P1)
1508 phy_addr_off = 26;
1509
1510 phy_addr_off += (np->port ^ 0x3);
1511 break;
1512
1513 case NIU_FLAGS_10G:
1514 /* 10G copper */
1515 tp = &phy_template_1g_copper;
1516 break;
1517
1518 case NIU_FLAGS_FIBER:
1519 /* 1G fiber */
1520 tp = &phy_template_1g_fiber;
1521 break;
1522
1523 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
1524 /* 10G fiber */
1525 tp = &phy_template_10g_fiber;
1526 if (plat_type == PLAT_TYPE_VF_P0 ||
1527 plat_type == PLAT_TYPE_VF_P1)
1528 phy_addr_off = 8;
1529 phy_addr_off += np->port;
1530 break;
1531
1532 default:
1533 return -EINVAL;
1534 }
1535 }
1536
1537 np->phy_ops = tp->ops;
1538 np->phy_addr = tp->phy_addr_base + phy_addr_off;
1539
1540 return 0;
1541 }
1542
1543 static int niu_init_link(struct niu *np)
1544 {
1545 struct niu_parent *parent = np->parent;
1546 int err, ignore;
1547
1548 if (parent->plat_type == PLAT_TYPE_NIU) {
1549 err = niu_xcvr_init(np);
1550 if (err)
1551 return err;
1552 msleep(200);
1553 }
1554 err = niu_serdes_init(np);
1555 if (err)
1556 return err;
1557 msleep(200);
1558 err = niu_xcvr_init(np);
1559 if (!err)
1560 niu_link_status(np, &ignore);
1561 return 0;
1562 }
1563
1564 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
1565 {
1566 u16 reg0 = addr[4] << 8 | addr[5];
1567 u16 reg1 = addr[2] << 8 | addr[3];
1568 u16 reg2 = addr[0] << 8 | addr[1];
1569
1570 if (np->flags & NIU_FLAGS_XMAC) {
1571 nw64_mac(XMAC_ADDR0, reg0);
1572 nw64_mac(XMAC_ADDR1, reg1);
1573 nw64_mac(XMAC_ADDR2, reg2);
1574 } else {
1575 nw64_mac(BMAC_ADDR0, reg0);
1576 nw64_mac(BMAC_ADDR1, reg1);
1577 nw64_mac(BMAC_ADDR2, reg2);
1578 }
1579 }
1580
1581 static int niu_num_alt_addr(struct niu *np)
1582 {
1583 if (np->flags & NIU_FLAGS_XMAC)
1584 return XMAC_NUM_ALT_ADDR;
1585 else
1586 return BMAC_NUM_ALT_ADDR;
1587 }
1588
1589 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
1590 {
1591 u16 reg0 = addr[4] << 8 | addr[5];
1592 u16 reg1 = addr[2] << 8 | addr[3];
1593 u16 reg2 = addr[0] << 8 | addr[1];
1594
1595 if (index >= niu_num_alt_addr(np))
1596 return -EINVAL;
1597
1598 if (np->flags & NIU_FLAGS_XMAC) {
1599 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
1600 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
1601 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
1602 } else {
1603 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
1604 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
1605 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
1606 }
1607
1608 return 0;
1609 }
1610
1611 static int niu_enable_alt_mac(struct niu *np, int index, int on)
1612 {
1613 unsigned long reg;
1614 u64 val, mask;
1615
1616 if (index >= niu_num_alt_addr(np))
1617 return -EINVAL;
1618
1619 if (np->flags & NIU_FLAGS_XMAC) {
1620 reg = XMAC_ADDR_CMPEN;
1621 mask = 1 << index;
1622 } else {
1623 reg = BMAC_ADDR_CMPEN;
1624 mask = 1 << (index + 1);
1625 }
1626
1627 val = nr64_mac(reg);
1628 if (on)
1629 val |= mask;
1630 else
1631 val &= ~mask;
1632 nw64_mac(reg, val);
1633
1634 return 0;
1635 }
1636
1637 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
1638 int num, int mac_pref)
1639 {
1640 u64 val = nr64_mac(reg);
1641 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
1642 val |= num;
1643 if (mac_pref)
1644 val |= HOST_INFO_MPR;
1645 nw64_mac(reg, val);
1646 }
1647
1648 static int __set_rdc_table_num(struct niu *np,
1649 int xmac_index, int bmac_index,
1650 int rdc_table_num, int mac_pref)
1651 {
1652 unsigned long reg;
1653
1654 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
1655 return -EINVAL;
1656 if (np->flags & NIU_FLAGS_XMAC)
1657 reg = XMAC_HOST_INFO(xmac_index);
1658 else
1659 reg = BMAC_HOST_INFO(bmac_index);
1660 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
1661 return 0;
1662 }
1663
1664 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
1665 int mac_pref)
1666 {
1667 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
1668 }
1669
1670 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
1671 int mac_pref)
1672 {
1673 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
1674 }
1675
1676 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
1677 int table_num, int mac_pref)
1678 {
1679 if (idx >= niu_num_alt_addr(np))
1680 return -EINVAL;
1681 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
1682 }
1683
1684 static u64 vlan_entry_set_parity(u64 reg_val)
1685 {
1686 u64 port01_mask;
1687 u64 port23_mask;
1688
1689 port01_mask = 0x00ff;
1690 port23_mask = 0xff00;
1691
1692 if (hweight64(reg_val & port01_mask) & 1)
1693 reg_val |= ENET_VLAN_TBL_PARITY0;
1694 else
1695 reg_val &= ~ENET_VLAN_TBL_PARITY0;
1696
1697 if (hweight64(reg_val & port23_mask) & 1)
1698 reg_val |= ENET_VLAN_TBL_PARITY1;
1699 else
1700 reg_val &= ~ENET_VLAN_TBL_PARITY1;
1701
1702 return reg_val;
1703 }
1704
1705 static void vlan_tbl_write(struct niu *np, unsigned long index,
1706 int port, int vpr, int rdc_table)
1707 {
1708 u64 reg_val = nr64(ENET_VLAN_TBL(index));
1709
1710 reg_val &= ~((ENET_VLAN_TBL_VPR |
1711 ENET_VLAN_TBL_VLANRDCTBLN) <<
1712 ENET_VLAN_TBL_SHIFT(port));
1713 if (vpr)
1714 reg_val |= (ENET_VLAN_TBL_VPR <<
1715 ENET_VLAN_TBL_SHIFT(port));
1716 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
1717
1718 reg_val = vlan_entry_set_parity(reg_val);
1719
1720 nw64(ENET_VLAN_TBL(index), reg_val);
1721 }
1722
1723 static void vlan_tbl_clear(struct niu *np)
1724 {
1725 int i;
1726
1727 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
1728 nw64(ENET_VLAN_TBL(i), 0);
1729 }
1730
1731 static int tcam_wait_bit(struct niu *np, u64 bit)
1732 {
1733 int limit = 1000;
1734
1735 while (--limit > 0) {
1736 if (nr64(TCAM_CTL) & bit)
1737 break;
1738 udelay(1);
1739 }
1740 if (limit < 0)
1741 return -ENODEV;
1742
1743 return 0;
1744 }
1745
1746 static int tcam_flush(struct niu *np, int index)
1747 {
1748 nw64(TCAM_KEY_0, 0x00);
1749 nw64(TCAM_KEY_MASK_0, 0xff);
1750 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1751
1752 return tcam_wait_bit(np, TCAM_CTL_STAT);
1753 }
1754
1755 #if 0
1756 static int tcam_read(struct niu *np, int index,
1757 u64 *key, u64 *mask)
1758 {
1759 int err;
1760
1761 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
1762 err = tcam_wait_bit(np, TCAM_CTL_STAT);
1763 if (!err) {
1764 key[0] = nr64(TCAM_KEY_0);
1765 key[1] = nr64(TCAM_KEY_1);
1766 key[2] = nr64(TCAM_KEY_2);
1767 key[3] = nr64(TCAM_KEY_3);
1768 mask[0] = nr64(TCAM_KEY_MASK_0);
1769 mask[1] = nr64(TCAM_KEY_MASK_1);
1770 mask[2] = nr64(TCAM_KEY_MASK_2);
1771 mask[3] = nr64(TCAM_KEY_MASK_3);
1772 }
1773 return err;
1774 }
1775 #endif
1776
1777 static int tcam_write(struct niu *np, int index,
1778 u64 *key, u64 *mask)
1779 {
1780 nw64(TCAM_KEY_0, key[0]);
1781 nw64(TCAM_KEY_1, key[1]);
1782 nw64(TCAM_KEY_2, key[2]);
1783 nw64(TCAM_KEY_3, key[3]);
1784 nw64(TCAM_KEY_MASK_0, mask[0]);
1785 nw64(TCAM_KEY_MASK_1, mask[1]);
1786 nw64(TCAM_KEY_MASK_2, mask[2]);
1787 nw64(TCAM_KEY_MASK_3, mask[3]);
1788 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1789
1790 return tcam_wait_bit(np, TCAM_CTL_STAT);
1791 }
1792
1793 #if 0
1794 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
1795 {
1796 int err;
1797
1798 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
1799 err = tcam_wait_bit(np, TCAM_CTL_STAT);
1800 if (!err)
1801 *data = nr64(TCAM_KEY_1);
1802
1803 return err;
1804 }
1805 #endif
1806
1807 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
1808 {
1809 nw64(TCAM_KEY_1, assoc_data);
1810 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
1811
1812 return tcam_wait_bit(np, TCAM_CTL_STAT);
1813 }
1814
1815 static void tcam_enable(struct niu *np, int on)
1816 {
1817 u64 val = nr64(FFLP_CFG_1);
1818
1819 if (on)
1820 val &= ~FFLP_CFG_1_TCAM_DIS;
1821 else
1822 val |= FFLP_CFG_1_TCAM_DIS;
1823 nw64(FFLP_CFG_1, val);
1824 }
1825
1826 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
1827 {
1828 u64 val = nr64(FFLP_CFG_1);
1829
1830 val &= ~(FFLP_CFG_1_FFLPINITDONE |
1831 FFLP_CFG_1_CAMLAT |
1832 FFLP_CFG_1_CAMRATIO);
1833 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
1834 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
1835 nw64(FFLP_CFG_1, val);
1836
1837 val = nr64(FFLP_CFG_1);
1838 val |= FFLP_CFG_1_FFLPINITDONE;
1839 nw64(FFLP_CFG_1, val);
1840 }
1841
1842 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
1843 int on)
1844 {
1845 unsigned long reg;
1846 u64 val;
1847
1848 if (class < CLASS_CODE_ETHERTYPE1 ||
1849 class > CLASS_CODE_ETHERTYPE2)
1850 return -EINVAL;
1851
1852 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1853 val = nr64(reg);
1854 if (on)
1855 val |= L2_CLS_VLD;
1856 else
1857 val &= ~L2_CLS_VLD;
1858 nw64(reg, val);
1859
1860 return 0;
1861 }
1862
1863 #if 0
1864 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
1865 u64 ether_type)
1866 {
1867 unsigned long reg;
1868 u64 val;
1869
1870 if (class < CLASS_CODE_ETHERTYPE1 ||
1871 class > CLASS_CODE_ETHERTYPE2 ||
1872 (ether_type & ~(u64)0xffff) != 0)
1873 return -EINVAL;
1874
1875 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1876 val = nr64(reg);
1877 val &= ~L2_CLS_ETYPE;
1878 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
1879 nw64(reg, val);
1880
1881 return 0;
1882 }
1883 #endif
1884
1885 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
1886 int on)
1887 {
1888 unsigned long reg;
1889 u64 val;
1890
1891 if (class < CLASS_CODE_USER_PROG1 ||
1892 class > CLASS_CODE_USER_PROG4)
1893 return -EINVAL;
1894
1895 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1896 val = nr64(reg);
1897 if (on)
1898 val |= L3_CLS_VALID;
1899 else
1900 val &= ~L3_CLS_VALID;
1901 nw64(reg, val);
1902
1903 return 0;
1904 }
1905
1906 #if 0
1907 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
1908 int ipv6, u64 protocol_id,
1909 u64 tos_mask, u64 tos_val)
1910 {
1911 unsigned long reg;
1912 u64 val;
1913
1914 if (class < CLASS_CODE_USER_PROG1 ||
1915 class > CLASS_CODE_USER_PROG4 ||
1916 (protocol_id & ~(u64)0xff) != 0 ||
1917 (tos_mask & ~(u64)0xff) != 0 ||
1918 (tos_val & ~(u64)0xff) != 0)
1919 return -EINVAL;
1920
1921 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1922 val = nr64(reg);
1923 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
1924 L3_CLS_TOSMASK | L3_CLS_TOS);
1925 if (ipv6)
1926 val |= L3_CLS_IPVER;
1927 val |= (protocol_id << L3_CLS_PID_SHIFT);
1928 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
1929 val |= (tos_val << L3_CLS_TOS_SHIFT);
1930 nw64(reg, val);
1931
1932 return 0;
1933 }
1934 #endif
1935
1936 static int tcam_early_init(struct niu *np)
1937 {
1938 unsigned long i;
1939 int err;
1940
1941 tcam_enable(np, 0);
1942 tcam_set_lat_and_ratio(np,
1943 DEFAULT_TCAM_LATENCY,
1944 DEFAULT_TCAM_ACCESS_RATIO);
1945 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
1946 err = tcam_user_eth_class_enable(np, i, 0);
1947 if (err)
1948 return err;
1949 }
1950 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
1951 err = tcam_user_ip_class_enable(np, i, 0);
1952 if (err)
1953 return err;
1954 }
1955
1956 return 0;
1957 }
1958
1959 static int tcam_flush_all(struct niu *np)
1960 {
1961 unsigned long i;
1962
1963 for (i = 0; i < np->parent->tcam_num_entries; i++) {
1964 int err = tcam_flush(np, i);
1965 if (err)
1966 return err;
1967 }
1968 return 0;
1969 }
1970
1971 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
1972 {
1973 return ((u64)index | (num_entries == 1 ?
1974 HASH_TBL_ADDR_AUTOINC : 0));
1975 }
1976
1977 #if 0
1978 static int hash_read(struct niu *np, unsigned long partition,
1979 unsigned long index, unsigned long num_entries,
1980 u64 *data)
1981 {
1982 u64 val = hash_addr_regval(index, num_entries);
1983 unsigned long i;
1984
1985 if (partition >= FCRAM_NUM_PARTITIONS ||
1986 index + num_entries > FCRAM_SIZE)
1987 return -EINVAL;
1988
1989 nw64(HASH_TBL_ADDR(partition), val);
1990 for (i = 0; i < num_entries; i++)
1991 data[i] = nr64(HASH_TBL_DATA(partition));
1992
1993 return 0;
1994 }
1995 #endif
1996
1997 static int hash_write(struct niu *np, unsigned long partition,
1998 unsigned long index, unsigned long num_entries,
1999 u64 *data)
2000 {
2001 u64 val = hash_addr_regval(index, num_entries);
2002 unsigned long i;
2003
2004 if (partition >= FCRAM_NUM_PARTITIONS ||
2005 index + (num_entries * 8) > FCRAM_SIZE)
2006 return -EINVAL;
2007
2008 nw64(HASH_TBL_ADDR(partition), val);
2009 for (i = 0; i < num_entries; i++)
2010 nw64(HASH_TBL_DATA(partition), data[i]);
2011
2012 return 0;
2013 }
2014
2015 static void fflp_reset(struct niu *np)
2016 {
2017 u64 val;
2018
2019 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
2020 udelay(10);
2021 nw64(FFLP_CFG_1, 0);
2022
2023 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
2024 nw64(FFLP_CFG_1, val);
2025 }
2026
2027 static void fflp_set_timings(struct niu *np)
2028 {
2029 u64 val = nr64(FFLP_CFG_1);
2030
2031 val &= ~FFLP_CFG_1_FFLPINITDONE;
2032 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
2033 nw64(FFLP_CFG_1, val);
2034
2035 val = nr64(FFLP_CFG_1);
2036 val |= FFLP_CFG_1_FFLPINITDONE;
2037 nw64(FFLP_CFG_1, val);
2038
2039 val = nr64(FCRAM_REF_TMR);
2040 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
2041 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
2042 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
2043 nw64(FCRAM_REF_TMR, val);
2044 }
2045
2046 static int fflp_set_partition(struct niu *np, u64 partition,
2047 u64 mask, u64 base, int enable)
2048 {
2049 unsigned long reg;
2050 u64 val;
2051
2052 if (partition >= FCRAM_NUM_PARTITIONS ||
2053 (mask & ~(u64)0x1f) != 0 ||
2054 (base & ~(u64)0x1f) != 0)
2055 return -EINVAL;
2056
2057 reg = FLW_PRT_SEL(partition);
2058
2059 val = nr64(reg);
2060 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
2061 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
2062 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
2063 if (enable)
2064 val |= FLW_PRT_SEL_EXT;
2065 nw64(reg, val);
2066
2067 return 0;
2068 }
2069
2070 static int fflp_disable_all_partitions(struct niu *np)
2071 {
2072 unsigned long i;
2073
2074 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
2075 int err = fflp_set_partition(np, 0, 0, 0, 0);
2076 if (err)
2077 return err;
2078 }
2079 return 0;
2080 }
2081
2082 static void fflp_llcsnap_enable(struct niu *np, int on)
2083 {
2084 u64 val = nr64(FFLP_CFG_1);
2085
2086 if (on)
2087 val |= FFLP_CFG_1_LLCSNAP;
2088 else
2089 val &= ~FFLP_CFG_1_LLCSNAP;
2090 nw64(FFLP_CFG_1, val);
2091 }
2092
2093 static void fflp_errors_enable(struct niu *np, int on)
2094 {
2095 u64 val = nr64(FFLP_CFG_1);
2096
2097 if (on)
2098 val &= ~FFLP_CFG_1_ERRORDIS;
2099 else
2100 val |= FFLP_CFG_1_ERRORDIS;
2101 nw64(FFLP_CFG_1, val);
2102 }
2103
2104 static int fflp_hash_clear(struct niu *np)
2105 {
2106 struct fcram_hash_ipv4 ent;
2107 unsigned long i;
2108
2109 /* IPV4 hash entry with valid bit clear, rest is don't care. */
2110 memset(&ent, 0, sizeof(ent));
2111 ent.header = HASH_HEADER_EXT;
2112
2113 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
2114 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
2115 if (err)
2116 return err;
2117 }
2118 return 0;
2119 }
2120
2121 static int fflp_early_init(struct niu *np)
2122 {
2123 struct niu_parent *parent;
2124 unsigned long flags;
2125 int err;
2126
2127 niu_lock_parent(np, flags);
2128
2129 parent = np->parent;
2130 err = 0;
2131 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
2132 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
2133 np->port);
2134 if (np->parent->plat_type != PLAT_TYPE_NIU) {
2135 fflp_reset(np);
2136 fflp_set_timings(np);
2137 err = fflp_disable_all_partitions(np);
2138 if (err) {
2139 niudbg(PROBE, "fflp_disable_all_partitions "
2140 "failed, err=%d\n", err);
2141 goto out;
2142 }
2143 }
2144
2145 err = tcam_early_init(np);
2146 if (err) {
2147 niudbg(PROBE, "tcam_early_init failed, err=%d\n",
2148 err);
2149 goto out;
2150 }
2151 fflp_llcsnap_enable(np, 1);
2152 fflp_errors_enable(np, 0);
2153 nw64(H1POLY, 0);
2154 nw64(H2POLY, 0);
2155
2156 err = tcam_flush_all(np);
2157 if (err) {
2158 niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
2159 err);
2160 goto out;
2161 }
2162 if (np->parent->plat_type != PLAT_TYPE_NIU) {
2163 err = fflp_hash_clear(np);
2164 if (err) {
2165 niudbg(PROBE, "fflp_hash_clear failed, "
2166 "err=%d\n", err);
2167 goto out;
2168 }
2169 }
2170
2171 vlan_tbl_clear(np);
2172
2173 niudbg(PROBE, "fflp_early_init: Success\n");
2174 parent->flags |= PARENT_FLGS_CLS_HWINIT;
2175 }
2176 out:
2177 niu_unlock_parent(np, flags);
2178 return err;
2179 }
2180
2181 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
2182 {
2183 if (class_code < CLASS_CODE_USER_PROG1 ||
2184 class_code > CLASS_CODE_SCTP_IPV6)
2185 return -EINVAL;
2186
2187 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2188 return 0;
2189 }
2190
2191 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
2192 {
2193 if (class_code < CLASS_CODE_USER_PROG1 ||
2194 class_code > CLASS_CODE_SCTP_IPV6)
2195 return -EINVAL;
2196
2197 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2198 return 0;
2199 }
2200
2201 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
2202 u32 offset, u32 size)
2203 {
2204 int i = skb_shinfo(skb)->nr_frags;
2205 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2206
2207 frag->page = page;
2208 frag->page_offset = offset;
2209 frag->size = size;
2210
2211 skb->len += size;
2212 skb->data_len += size;
2213 skb->truesize += size;
2214
2215 skb_shinfo(skb)->nr_frags = i + 1;
2216 }
2217
2218 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
2219 {
2220 a >>= PAGE_SHIFT;
2221 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
2222
2223 return (a & (MAX_RBR_RING_SIZE - 1));
2224 }
2225
2226 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
2227 struct page ***link)
2228 {
2229 unsigned int h = niu_hash_rxaddr(rp, addr);
2230 struct page *p, **pp;
2231
2232 addr &= PAGE_MASK;
2233 pp = &rp->rxhash[h];
2234 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
2235 if (p->index == addr) {
2236 *link = pp;
2237 break;
2238 }
2239 }
2240
2241 return p;
2242 }
2243
2244 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
2245 {
2246 unsigned int h = niu_hash_rxaddr(rp, base);
2247
2248 page->index = base;
2249 page->mapping = (struct address_space *) rp->rxhash[h];
2250 rp->rxhash[h] = page;
2251 }
2252
2253 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
2254 gfp_t mask, int start_index)
2255 {
2256 struct page *page;
2257 u64 addr;
2258 int i;
2259
2260 page = alloc_page(mask);
2261 if (!page)
2262 return -ENOMEM;
2263
2264 addr = np->ops->map_page(np->device, page, 0,
2265 PAGE_SIZE, DMA_FROM_DEVICE);
2266
2267 niu_hash_page(rp, page, addr);
2268 if (rp->rbr_blocks_per_page > 1)
2269 atomic_add(rp->rbr_blocks_per_page - 1,
2270 &compound_head(page)->_count);
2271
2272 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
2273 __le32 *rbr = &rp->rbr[start_index + i];
2274
2275 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
2276 addr += rp->rbr_block_size;
2277 }
2278
2279 return 0;
2280 }
2281
2282 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2283 {
2284 int index = rp->rbr_index;
2285
2286 rp->rbr_pending++;
2287 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
2288 int err = niu_rbr_add_page(np, rp, mask, index);
2289
2290 if (unlikely(err)) {
2291 rp->rbr_pending--;
2292 return;
2293 }
2294
2295 rp->rbr_index += rp->rbr_blocks_per_page;
2296 BUG_ON(rp->rbr_index > rp->rbr_table_size);
2297 if (rp->rbr_index == rp->rbr_table_size)
2298 rp->rbr_index = 0;
2299
2300 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
2301 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
2302 rp->rbr_pending = 0;
2303 }
2304 }
2305 }
2306
2307 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
2308 {
2309 unsigned int index = rp->rcr_index;
2310 int num_rcr = 0;
2311
2312 rp->rx_dropped++;
2313 while (1) {
2314 struct page *page, **link;
2315 u64 addr, val;
2316 u32 rcr_size;
2317
2318 num_rcr++;
2319
2320 val = le64_to_cpup(&rp->rcr[index]);
2321 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2322 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2323 page = niu_find_rxpage(rp, addr, &link);
2324
2325 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2326 RCR_ENTRY_PKTBUFSZ_SHIFT];
2327 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
2328 *link = (struct page *) page->mapping;
2329 np->ops->unmap_page(np->device, page->index,
2330 PAGE_SIZE, DMA_FROM_DEVICE);
2331 page->index = 0;
2332 page->mapping = NULL;
2333 __free_page(page);
2334 rp->rbr_refill_pending++;
2335 }
2336
2337 index = NEXT_RCR(rp, index);
2338 if (!(val & RCR_ENTRY_MULTI))
2339 break;
2340
2341 }
2342 rp->rcr_index = index;
2343
2344 return num_rcr;
2345 }
2346
2347 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
2348 {
2349 unsigned int index = rp->rcr_index;
2350 struct sk_buff *skb;
2351 int len, num_rcr;
2352
2353 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
2354 if (unlikely(!skb))
2355 return niu_rx_pkt_ignore(np, rp);
2356
2357 num_rcr = 0;
2358 while (1) {
2359 struct page *page, **link;
2360 u32 rcr_size, append_size;
2361 u64 addr, val, off;
2362
2363 num_rcr++;
2364
2365 val = le64_to_cpup(&rp->rcr[index]);
2366
2367 len = (val & RCR_ENTRY_L2_LEN) >>
2368 RCR_ENTRY_L2_LEN_SHIFT;
2369 len -= ETH_FCS_LEN;
2370
2371 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2372 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2373 page = niu_find_rxpage(rp, addr, &link);
2374
2375 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2376 RCR_ENTRY_PKTBUFSZ_SHIFT];
2377
2378 off = addr & ~PAGE_MASK;
2379 append_size = rcr_size;
2380 if (num_rcr == 1) {
2381 int ptype;
2382
2383 off += 2;
2384 append_size -= 2;
2385
2386 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
2387 if ((ptype == RCR_PKT_TYPE_TCP ||
2388 ptype == RCR_PKT_TYPE_UDP) &&
2389 !(val & (RCR_ENTRY_NOPORT |
2390 RCR_ENTRY_ERROR)))
2391 skb->ip_summed = CHECKSUM_UNNECESSARY;
2392 else
2393 skb->ip_summed = CHECKSUM_NONE;
2394 }
2395 if (!(val & RCR_ENTRY_MULTI))
2396 append_size = len - skb->len;
2397
2398 niu_rx_skb_append(skb, page, off, append_size);
2399 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
2400 *link = (struct page *) page->mapping;
2401 np->ops->unmap_page(np->device, page->index,
2402 PAGE_SIZE, DMA_FROM_DEVICE);
2403 page->index = 0;
2404 page->mapping = NULL;
2405 rp->rbr_refill_pending++;
2406 } else
2407 get_page(page);
2408
2409 index = NEXT_RCR(rp, index);
2410 if (!(val & RCR_ENTRY_MULTI))
2411 break;
2412
2413 }
2414 rp->rcr_index = index;
2415
2416 skb_reserve(skb, NET_IP_ALIGN);
2417 __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
2418
2419 rp->rx_packets++;
2420 rp->rx_bytes += skb->len;
2421
2422 skb->protocol = eth_type_trans(skb, np->dev);
2423 netif_receive_skb(skb);
2424
2425 np->dev->last_rx = jiffies;
2426
2427 return num_rcr;
2428 }
2429
2430 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2431 {
2432 int blocks_per_page = rp->rbr_blocks_per_page;
2433 int err, index = rp->rbr_index;
2434
2435 err = 0;
2436 while (index < (rp->rbr_table_size - blocks_per_page)) {
2437 err = niu_rbr_add_page(np, rp, mask, index);
2438 if (err)
2439 break;
2440
2441 index += blocks_per_page;
2442 }
2443
2444 rp->rbr_index = index;
2445 return err;
2446 }
2447
2448 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
2449 {
2450 int i;
2451
2452 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
2453 struct page *page;
2454
2455 page = rp->rxhash[i];
2456 while (page) {
2457 struct page *next = (struct page *) page->mapping;
2458 u64 base = page->index;
2459
2460 np->ops->unmap_page(np->device, base, PAGE_SIZE,
2461 DMA_FROM_DEVICE);
2462 page->index = 0;
2463 page->mapping = NULL;
2464
2465 __free_page(page);
2466
2467 page = next;
2468 }
2469 }
2470
2471 for (i = 0; i < rp->rbr_table_size; i++)
2472 rp->rbr[i] = cpu_to_le32(0);
2473 rp->rbr_index = 0;
2474 }
2475
2476 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
2477 {
2478 struct tx_buff_info *tb = &rp->tx_buffs[idx];
2479 struct sk_buff *skb = tb->skb;
2480 struct tx_pkt_hdr *tp;
2481 u64 tx_flags;
2482 int i, len;
2483
2484 tp = (struct tx_pkt_hdr *) skb->data;
2485 tx_flags = le64_to_cpup(&tp->flags);
2486
2487 rp->tx_packets++;
2488 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
2489 ((tx_flags & TXHDR_PAD) / 2));
2490
2491 len = skb_headlen(skb);
2492 np->ops->unmap_single(np->device, tb->mapping,
2493 len, DMA_TO_DEVICE);
2494
2495 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
2496 rp->mark_pending--;
2497
2498 tb->skb = NULL;
2499 do {
2500 idx = NEXT_TX(rp, idx);
2501 len -= MAX_TX_DESC_LEN;
2502 } while (len > 0);
2503
2504 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2505 tb = &rp->tx_buffs[idx];
2506 BUG_ON(tb->skb != NULL);
2507 np->ops->unmap_page(np->device, tb->mapping,
2508 skb_shinfo(skb)->frags[i].size,
2509 DMA_TO_DEVICE);
2510 idx = NEXT_TX(rp, idx);
2511 }
2512
2513 dev_kfree_skb(skb);
2514
2515 return idx;
2516 }
2517
2518 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
2519
2520 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
2521 {
2522 u16 pkt_cnt, tmp;
2523 int cons;
2524 u64 cs;
2525
2526 cs = rp->tx_cs;
2527 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
2528 goto out;
2529
2530 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
2531 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
2532 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
2533
2534 rp->last_pkt_cnt = tmp;
2535
2536 cons = rp->cons;
2537
2538 niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
2539 np->dev->name, pkt_cnt, cons);
2540
2541 while (pkt_cnt--)
2542 cons = release_tx_packet(np, rp, cons);
2543
2544 rp->cons = cons;
2545 smp_mb();
2546
2547 out:
2548 if (unlikely(netif_queue_stopped(np->dev) &&
2549 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
2550 netif_tx_lock(np->dev);
2551 if (netif_queue_stopped(np->dev) &&
2552 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
2553 netif_wake_queue(np->dev);
2554 netif_tx_unlock(np->dev);
2555 }
2556 }
2557
2558 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
2559 {
2560 int qlen, rcr_done = 0, work_done = 0;
2561 struct rxdma_mailbox *mbox = rp->mbox;
2562 u64 stat;
2563
2564 #if 1
2565 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2566 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
2567 #else
2568 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2569 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
2570 #endif
2571 mbox->rx_dma_ctl_stat = 0;
2572 mbox->rcrstat_a = 0;
2573
2574 niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
2575 np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
2576
2577 rcr_done = work_done = 0;
2578 qlen = min(qlen, budget);
2579 while (work_done < qlen) {
2580 rcr_done += niu_process_rx_pkt(np, rp);
2581 work_done++;
2582 }
2583
2584 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
2585 unsigned int i;
2586
2587 for (i = 0; i < rp->rbr_refill_pending; i++)
2588 niu_rbr_refill(np, rp, GFP_ATOMIC);
2589 rp->rbr_refill_pending = 0;
2590 }
2591
2592 stat = (RX_DMA_CTL_STAT_MEX |
2593 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
2594 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
2595
2596 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
2597
2598 return work_done;
2599 }
2600
2601 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
2602 {
2603 u64 v0 = lp->v0;
2604 u32 tx_vec = (v0 >> 32);
2605 u32 rx_vec = (v0 & 0xffffffff);
2606 int i, work_done = 0;
2607
2608 niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
2609 np->dev->name, (unsigned long long) v0);
2610
2611 for (i = 0; i < np->num_tx_rings; i++) {
2612 struct tx_ring_info *rp = &np->tx_rings[i];
2613 if (tx_vec & (1 << rp->tx_channel))
2614 niu_tx_work(np, rp);
2615 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
2616 }
2617
2618 for (i = 0; i < np->num_rx_rings; i++) {
2619 struct rx_ring_info *rp = &np->rx_rings[i];
2620
2621 if (rx_vec & (1 << rp->rx_channel)) {
2622 int this_work_done;
2623
2624 this_work_done = niu_rx_work(np, rp,
2625 budget);
2626
2627 budget -= this_work_done;
2628 work_done += this_work_done;
2629 }
2630 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
2631 }
2632
2633 return work_done;
2634 }
2635
2636 static int niu_poll(struct napi_struct *napi, int budget)
2637 {
2638 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
2639 struct niu *np = lp->np;
2640 int work_done;
2641
2642 work_done = niu_poll_core(np, lp, budget);
2643
2644 if (work_done < budget) {
2645 netif_rx_complete(np->dev, napi);
2646 niu_ldg_rearm(np, lp, 1);
2647 }
2648 return work_done;
2649 }
2650
2651 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
2652 u64 stat)
2653 {
2654 dev_err(np->device, PFX "%s: RX channel %u errors ( ",
2655 np->dev->name, rp->rx_channel);
2656
2657 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
2658 printk("RBR_TMOUT ");
2659 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
2660 printk("RSP_CNT ");
2661 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
2662 printk("BYTE_EN_BUS ");
2663 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
2664 printk("RSP_DAT ");
2665 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
2666 printk("RCR_ACK ");
2667 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
2668 printk("RCR_SHA_PAR ");
2669 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
2670 printk("RBR_PRE_PAR ");
2671 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
2672 printk("CONFIG ");
2673 if (stat & RX_DMA_CTL_STAT_RCRINCON)
2674 printk("RCRINCON ");
2675 if (stat & RX_DMA_CTL_STAT_RCRFULL)
2676 printk("RCRFULL ");
2677 if (stat & RX_DMA_CTL_STAT_RBRFULL)
2678 printk("RBRFULL ");
2679 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
2680 printk("RBRLOGPAGE ");
2681 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
2682 printk("CFIGLOGPAGE ");
2683 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
2684 printk("DC_FIDO ");
2685
2686 printk(")\n");
2687 }
2688
2689 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
2690 {
2691 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2692 int err = 0;
2693
2694
2695 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
2696 RX_DMA_CTL_STAT_PORT_FATAL))
2697 err = -EINVAL;
2698
2699 if (err) {
2700 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
2701 np->dev->name, rp->rx_channel,
2702 (unsigned long long) stat);
2703
2704 niu_log_rxchan_errors(np, rp, stat);
2705 }
2706
2707 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
2708 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
2709
2710 return err;
2711 }
2712
2713 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
2714 u64 cs)
2715 {
2716 dev_err(np->device, PFX "%s: TX channel %u errors ( ",
2717 np->dev->name, rp->tx_channel);
2718
2719 if (cs & TX_CS_MBOX_ERR)
2720 printk("MBOX ");
2721 if (cs & TX_CS_PKT_SIZE_ERR)
2722 printk("PKT_SIZE ");
2723 if (cs & TX_CS_TX_RING_OFLOW)
2724 printk("TX_RING_OFLOW ");
2725 if (cs & TX_CS_PREF_BUF_PAR_ERR)
2726 printk("PREF_BUF_PAR ");
2727 if (cs & TX_CS_NACK_PREF)
2728 printk("NACK_PREF ");
2729 if (cs & TX_CS_NACK_PKT_RD)
2730 printk("NACK_PKT_RD ");
2731 if (cs & TX_CS_CONF_PART_ERR)
2732 printk("CONF_PART ");
2733 if (cs & TX_CS_PKT_PRT_ERR)
2734 printk("PKT_PTR ");
2735
2736 printk(")\n");
2737 }
2738
2739 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
2740 {
2741 u64 cs, logh, logl;
2742
2743 cs = nr64(TX_CS(rp->tx_channel));
2744 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
2745 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
2746
2747 dev_err(np->device, PFX "%s: TX channel %u error, "
2748 "cs[%llx] logh[%llx] logl[%llx]\n",
2749 np->dev->name, rp->tx_channel,
2750 (unsigned long long) cs,
2751 (unsigned long long) logh,
2752 (unsigned long long) logl);
2753
2754 niu_log_txchan_errors(np, rp, cs);
2755
2756 return -ENODEV;
2757 }
2758
2759 static int niu_mif_interrupt(struct niu *np)
2760 {
2761 u64 mif_status = nr64(MIF_STATUS);
2762 int phy_mdint = 0;
2763
2764 if (np->flags & NIU_FLAGS_XMAC) {
2765 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
2766
2767 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
2768 phy_mdint = 1;
2769 }
2770
2771 dev_err(np->device, PFX "%s: MIF interrupt, "
2772 "stat[%llx] phy_mdint(%d)\n",
2773 np->dev->name, (unsigned long long) mif_status, phy_mdint);
2774
2775 return -ENODEV;
2776 }
2777
2778 static void niu_xmac_interrupt(struct niu *np)
2779 {
2780 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
2781 u64 val;
2782
2783 val = nr64_mac(XTXMAC_STATUS);
2784 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
2785 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
2786 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
2787 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
2788 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
2789 mp->tx_fifo_errors++;
2790 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
2791 mp->tx_overflow_errors++;
2792 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
2793 mp->tx_max_pkt_size_errors++;
2794 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
2795 mp->tx_underflow_errors++;
2796
2797 val = nr64_mac(XRXMAC_STATUS);
2798 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
2799 mp->rx_local_faults++;
2800 if (val & XRXMAC_STATUS_RFLT_DET)
2801 mp->rx_remote_faults++;
2802 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
2803 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
2804 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
2805 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
2806 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
2807 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
2808 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
2809 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
2810 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2811 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2812 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2813 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2814 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
2815 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
2816 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
2817 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
2818 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
2819 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
2820 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
2821 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
2822 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
2823 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
2824 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
2825 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
2826 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
2827 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
2828 if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
2829 mp->rx_octets += RXMAC_BT_CNT_COUNT;
2830 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
2831 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
2832 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
2833 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
2834 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
2835 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
2836 if (val & XRXMAC_STATUS_RXUFLOW)
2837 mp->rx_underflows++;
2838 if (val & XRXMAC_STATUS_RXOFLOW)
2839 mp->rx_overflows++;
2840
2841 val = nr64_mac(XMAC_FC_STAT);
2842 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
2843 mp->pause_off_state++;
2844 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
2845 mp->pause_on_state++;
2846 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
2847 mp->pause_received++;
2848 }
2849
2850 static void niu_bmac_interrupt(struct niu *np)
2851 {
2852 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
2853 u64 val;
2854
2855 val = nr64_mac(BTXMAC_STATUS);
2856 if (val & BTXMAC_STATUS_UNDERRUN)
2857 mp->tx_underflow_errors++;
2858 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
2859 mp->tx_max_pkt_size_errors++;
2860 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
2861 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
2862 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
2863 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
2864
2865 val = nr64_mac(BRXMAC_STATUS);
2866 if (val & BRXMAC_STATUS_OVERFLOW)
2867 mp->rx_overflows++;
2868 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
2869 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
2870 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
2871 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2872 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
2873 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2874 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
2875 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
2876
2877 val = nr64_mac(BMAC_CTRL_STATUS);
2878 if (val & BMAC_CTRL_STATUS_NOPAUSE)
2879 mp->pause_off_state++;
2880 if (val & BMAC_CTRL_STATUS_PAUSE)
2881 mp->pause_on_state++;
2882 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
2883 mp->pause_received++;
2884 }
2885
2886 static int niu_mac_interrupt(struct niu *np)
2887 {
2888 if (np->flags & NIU_FLAGS_XMAC)
2889 niu_xmac_interrupt(np);
2890 else
2891 niu_bmac_interrupt(np);
2892
2893 return 0;
2894 }
2895
2896 static void niu_log_device_error(struct niu *np, u64 stat)
2897 {
2898 dev_err(np->device, PFX "%s: Core device errors ( ",
2899 np->dev->name);
2900
2901 if (stat & SYS_ERR_MASK_META2)
2902 printk("META2 ");
2903 if (stat & SYS_ERR_MASK_META1)
2904 printk("META1 ");
2905 if (stat & SYS_ERR_MASK_PEU)
2906 printk("PEU ");
2907 if (stat & SYS_ERR_MASK_TXC)
2908 printk("TXC ");
2909 if (stat & SYS_ERR_MASK_RDMC)
2910 printk("RDMC ");
2911 if (stat & SYS_ERR_MASK_TDMC)
2912 printk("TDMC ");
2913 if (stat & SYS_ERR_MASK_ZCP)
2914 printk("ZCP ");
2915 if (stat & SYS_ERR_MASK_FFLP)
2916 printk("FFLP ");
2917 if (stat & SYS_ERR_MASK_IPP)
2918 printk("IPP ");
2919 if (stat & SYS_ERR_MASK_MAC)
2920 printk("MAC ");
2921 if (stat & SYS_ERR_MASK_SMX)
2922 printk("SMX ");
2923
2924 printk(")\n");
2925 }
2926
2927 static int niu_device_error(struct niu *np)
2928 {
2929 u64 stat = nr64(SYS_ERR_STAT);
2930
2931 dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
2932 np->dev->name, (unsigned long long) stat);
2933
2934 niu_log_device_error(np, stat);
2935
2936 return -ENODEV;
2937 }
2938
2939 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
2940 u64 v0, u64 v1, u64 v2)
2941 {
2942
2943 int i, err = 0;
2944
2945 lp->v0 = v0;
2946 lp->v1 = v1;
2947 lp->v2 = v2;
2948
2949 if (v1 & 0x00000000ffffffffULL) {
2950 u32 rx_vec = (v1 & 0xffffffff);
2951
2952 for (i = 0; i < np->num_rx_rings; i++) {
2953 struct rx_ring_info *rp = &np->rx_rings[i];
2954
2955 if (rx_vec & (1 << rp->rx_channel)) {
2956 int r = niu_rx_error(np, rp);
2957 if (r) {
2958 err = r;
2959 } else {
2960 if (!v0)
2961 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
2962 RX_DMA_CTL_STAT_MEX);
2963 }
2964 }
2965 }
2966 }
2967 if (v1 & 0x7fffffff00000000ULL) {
2968 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
2969
2970 for (i = 0; i < np->num_tx_rings; i++) {
2971 struct tx_ring_info *rp = &np->tx_rings[i];
2972
2973 if (tx_vec & (1 << rp->tx_channel)) {
2974 int r = niu_tx_error(np, rp);
2975 if (r)
2976 err = r;
2977 }
2978 }
2979 }
2980 if ((v0 | v1) & 0x8000000000000000ULL) {
2981 int r = niu_mif_interrupt(np);
2982 if (r)
2983 err = r;
2984 }
2985 if (v2) {
2986 if (v2 & 0x01ef) {
2987 int r = niu_mac_interrupt(np);
2988 if (r)
2989 err = r;
2990 }
2991 if (v2 & 0x0210) {
2992 int r = niu_device_error(np);
2993 if (r)
2994 err = r;
2995 }
2996 }
2997
2998 if (err)
2999 niu_enable_interrupts(np, 0);
3000
3001 return err;
3002 }
3003
3004 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
3005 int ldn)
3006 {
3007 struct rxdma_mailbox *mbox = rp->mbox;
3008 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3009
3010 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
3011 RX_DMA_CTL_STAT_RCRTO);
3012 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
3013
3014 niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
3015 np->dev->name, (unsigned long long) stat);
3016 }
3017
3018 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
3019 int ldn)
3020 {
3021 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
3022
3023 niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
3024 np->dev->name, (unsigned long long) rp->tx_cs);
3025 }
3026
3027 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
3028 {
3029 struct niu_parent *parent = np->parent;
3030 u32 rx_vec, tx_vec;
3031 int i;
3032
3033 tx_vec = (v0 >> 32);
3034 rx_vec = (v0 & 0xffffffff);
3035
3036 for (i = 0; i < np->num_rx_rings; i++) {
3037 struct rx_ring_info *rp = &np->rx_rings[i];
3038 int ldn = LDN_RXDMA(rp->rx_channel);
3039
3040 if (parent->ldg_map[ldn] != ldg)
3041 continue;
3042
3043 nw64(LD_IM0(ldn), LD_IM0_MASK);
3044 if (rx_vec & (1 << rp->rx_channel))
3045 niu_rxchan_intr(np, rp, ldn);
3046 }
3047
3048 for (i = 0; i < np->num_tx_rings; i++) {
3049 struct tx_ring_info *rp = &np->tx_rings[i];
3050 int ldn = LDN_TXDMA(rp->tx_channel);
3051
3052 if (parent->ldg_map[ldn] != ldg)
3053 continue;
3054
3055 nw64(LD_IM0(ldn), LD_IM0_MASK);
3056 if (tx_vec & (1 << rp->tx_channel))
3057 niu_txchan_intr(np, rp, ldn);
3058 }
3059 }
3060
3061 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
3062 u64 v0, u64 v1, u64 v2)
3063 {
3064 if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
3065 lp->v0 = v0;
3066 lp->v1 = v1;
3067 lp->v2 = v2;
3068 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
3069 __netif_rx_schedule(np->dev, &lp->napi);
3070 }
3071 }
3072
3073 static irqreturn_t niu_interrupt(int irq, void *dev_id)
3074 {
3075 struct niu_ldg *lp = dev_id;
3076 struct niu *np = lp->np;
3077 int ldg = lp->ldg_num;
3078 unsigned long flags;
3079 u64 v0, v1, v2;
3080
3081 if (netif_msg_intr(np))
3082 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
3083 lp, ldg);
3084
3085 spin_lock_irqsave(&np->lock, flags);
3086
3087 v0 = nr64(LDSV0(ldg));
3088 v1 = nr64(LDSV1(ldg));
3089 v2 = nr64(LDSV2(ldg));
3090
3091 if (netif_msg_intr(np))
3092 printk("v0[%llx] v1[%llx] v2[%llx]\n",
3093 (unsigned long long) v0,
3094 (unsigned long long) v1,
3095 (unsigned long long) v2);
3096
3097 if (unlikely(!v0 && !v1 && !v2)) {
3098 spin_unlock_irqrestore(&np->lock, flags);
3099 return IRQ_NONE;
3100 }
3101
3102 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
3103 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
3104 if (err)
3105 goto out;
3106 }
3107 if (likely(v0 & ~((u64)1 << LDN_MIF)))
3108 niu_schedule_napi(np, lp, v0, v1, v2);
3109 else
3110 niu_ldg_rearm(np, lp, 1);
3111 out:
3112 spin_unlock_irqrestore(&np->lock, flags);
3113
3114 return IRQ_HANDLED;
3115 }
3116
3117 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
3118 {
3119 if (rp->mbox) {
3120 np->ops->free_coherent(np->device,
3121 sizeof(struct rxdma_mailbox),
3122 rp->mbox, rp->mbox_dma);
3123 rp->mbox = NULL;
3124 }
3125 if (rp->rcr) {
3126 np->ops->free_coherent(np->device,
3127 MAX_RCR_RING_SIZE * sizeof(__le64),
3128 rp->rcr, rp->rcr_dma);
3129 rp->rcr = NULL;
3130 rp->rcr_table_size = 0;
3131 rp->rcr_index = 0;
3132 }
3133 if (rp->rbr) {
3134 niu_rbr_free(np, rp);
3135
3136 np->ops->free_coherent(np->device,
3137 MAX_RBR_RING_SIZE * sizeof(__le32),
3138 rp->rbr, rp->rbr_dma);
3139 rp->rbr = NULL;
3140 rp->rbr_table_size = 0;
3141 rp->rbr_index = 0;
3142 }
3143 kfree(rp->rxhash);
3144 rp->rxhash = NULL;
3145 }
3146
3147 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
3148 {
3149 if (rp->mbox) {
3150 np->ops->free_coherent(np->device,
3151 sizeof(struct txdma_mailbox),
3152 rp->mbox, rp->mbox_dma);
3153 rp->mbox = NULL;
3154 }
3155 if (rp->descr) {
3156 int i;
3157
3158 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
3159 if (rp->tx_buffs[i].skb)
3160 (void) release_tx_packet(np, rp, i);
3161 }
3162
3163 np->ops->free_coherent(np->device,
3164 MAX_TX_RING_SIZE * sizeof(__le64),
3165 rp->descr, rp->descr_dma);
3166 rp->descr = NULL;
3167 rp->pending = 0;
3168 rp->prod = 0;
3169 rp->cons = 0;
3170 rp->wrap_bit = 0;
3171 }
3172 }
3173
3174 static void niu_free_channels(struct niu *np)
3175 {
3176 int i;
3177
3178 if (np->rx_rings) {
3179 for (i = 0; i < np->num_rx_rings; i++) {
3180 struct rx_ring_info *rp = &np->rx_rings[i];
3181
3182 niu_free_rx_ring_info(np, rp);
3183 }
3184 kfree(np->rx_rings);
3185 np->rx_rings = NULL;
3186 np->num_rx_rings = 0;
3187 }
3188
3189 if (np->tx_rings) {
3190 for (i = 0; i < np->num_tx_rings; i++) {
3191 struct tx_ring_info *rp = &np->tx_rings[i];
3192
3193 niu_free_tx_ring_info(np, rp);
3194 }
3195 kfree(np->tx_rings);
3196 np->tx_rings = NULL;
3197 np->num_tx_rings = 0;
3198 }
3199 }
3200
3201 static int niu_alloc_rx_ring_info(struct niu *np,
3202 struct rx_ring_info *rp)
3203 {
3204 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
3205
3206 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
3207 GFP_KERNEL);
3208 if (!rp->rxhash)
3209 return -ENOMEM;
3210
3211 rp->mbox = np->ops->alloc_coherent(np->device,
3212 sizeof(struct rxdma_mailbox),
3213 &rp->mbox_dma, GFP_KERNEL);
3214 if (!rp->mbox)
3215 return -ENOMEM;
3216 if ((unsigned long)rp->mbox & (64UL - 1)) {
3217 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3218 "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
3219 return -EINVAL;
3220 }
3221
3222 rp->rcr = np->ops->alloc_coherent(np->device,
3223 MAX_RCR_RING_SIZE * sizeof(__le64),
3224 &rp->rcr_dma, GFP_KERNEL);
3225 if (!rp->rcr)
3226 return -ENOMEM;
3227 if ((unsigned long)rp->rcr & (64UL - 1)) {
3228 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3229 "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
3230 return -EINVAL;
3231 }
3232 rp->rcr_table_size = MAX_RCR_RING_SIZE;
3233 rp->rcr_index = 0;
3234
3235 rp->rbr = np->ops->alloc_coherent(np->device,
3236 MAX_RBR_RING_SIZE * sizeof(__le32),
3237 &rp->rbr_dma, GFP_KERNEL);
3238 if (!rp->rbr)
3239 return -ENOMEM;
3240 if ((unsigned long)rp->rbr & (64UL - 1)) {
3241 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3242 "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
3243 return -EINVAL;
3244 }
3245 rp->rbr_table_size = MAX_RBR_RING_SIZE;
3246 rp->rbr_index = 0;
3247 rp->rbr_pending = 0;
3248
3249 return 0;
3250 }
3251
3252 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
3253 {
3254 int mtu = np->dev->mtu;
3255
3256 /* These values are recommended by the HW designers for fair
3257 * utilization of DRR amongst the rings.
3258 */
3259 rp->max_burst = mtu + 32;
3260 if (rp->max_burst > 4096)
3261 rp->max_burst = 4096;
3262 }
3263
3264 static int niu_alloc_tx_ring_info(struct niu *np,
3265 struct tx_ring_info *rp)
3266 {
3267 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
3268
3269 rp->mbox = np->ops->alloc_coherent(np->device,
3270 sizeof(struct txdma_mailbox),
3271 &rp->mbox_dma, GFP_KERNEL);
3272 if (!rp->mbox)
3273 return -ENOMEM;
3274 if ((unsigned long)rp->mbox & (64UL - 1)) {
3275 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3276 "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
3277 return -EINVAL;
3278 }
3279
3280 rp->descr = np->ops->alloc_coherent(np->device,
3281 MAX_TX_RING_SIZE * sizeof(__le64),
3282 &rp->descr_dma, GFP_KERNEL);
3283 if (!rp->descr)
3284 return -ENOMEM;
3285 if ((unsigned long)rp->descr & (64UL - 1)) {
3286 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3287 "TXDMA descr table %p\n", np->dev->name, rp->descr);
3288 return -EINVAL;
3289 }
3290
3291 rp->pending = MAX_TX_RING_SIZE;
3292 rp->prod = 0;
3293 rp->cons = 0;
3294 rp->wrap_bit = 0;
3295
3296 /* XXX make these configurable... XXX */
3297 rp->mark_freq = rp->pending / 4;
3298
3299 niu_set_max_burst(np, rp);
3300
3301 return 0;
3302 }
3303
3304 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
3305 {
3306 u16 bss;
3307
3308 bss = min(PAGE_SHIFT, 15);
3309
3310 rp->rbr_block_size = 1 << bss;
3311 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
3312
3313 rp->rbr_sizes[0] = 256;
3314 rp->rbr_sizes[1] = 1024;
3315 if (np->dev->mtu > ETH_DATA_LEN) {
3316 switch (PAGE_SIZE) {
3317 case 4 * 1024:
3318 rp->rbr_sizes[2] = 4096;
3319 break;
3320
3321 default:
3322 rp->rbr_sizes[2] = 8192;
3323 break;
3324 }
3325 } else {
3326 rp->rbr_sizes[2] = 2048;
3327 }
3328 rp->rbr_sizes[3] = rp->rbr_block_size;
3329 }
3330
3331 static int niu_alloc_channels(struct niu *np)
3332 {
3333 struct niu_parent *parent = np->parent;
3334 int first_rx_channel, first_tx_channel;
3335 int i, port, err;
3336
3337 port = np->port;
3338 first_rx_channel = first_tx_channel = 0;
3339 for (i = 0; i < port; i++) {
3340 first_rx_channel += parent->rxchan_per_port[i];
3341 first_tx_channel += parent->txchan_per_port[i];
3342 }
3343
3344 np->num_rx_rings = parent->rxchan_per_port[port];
3345 np->num_tx_rings = parent->txchan_per_port[port];
3346
3347 np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
3348 GFP_KERNEL);
3349 err = -ENOMEM;
3350 if (!np->rx_rings)
3351 goto out_err;
3352
3353 for (i = 0; i < np->num_rx_rings; i++) {
3354 struct rx_ring_info *rp = &np->rx_rings[i];
3355
3356 rp->np = np;
3357 rp->rx_channel = first_rx_channel + i;
3358
3359 err = niu_alloc_rx_ring_info(np, rp);
3360 if (err)
3361 goto out_err;
3362
3363 niu_size_rbr(np, rp);
3364
3365 /* XXX better defaults, configurable, etc... XXX */
3366 rp->nonsyn_window = 64;
3367 rp->nonsyn_threshold = rp->rcr_table_size - 64;
3368 rp->syn_window = 64;
3369 rp->syn_threshold = rp->rcr_table_size - 64;
3370 rp->rcr_pkt_threshold = 16;
3371 rp->rcr_timeout = 8;
3372 rp->rbr_kick_thresh = RBR_REFILL_MIN;
3373 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
3374 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
3375
3376 err = niu_rbr_fill(np, rp, GFP_KERNEL);
3377 if (err)
3378 return err;
3379 }
3380
3381 np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
3382 GFP_KERNEL);
3383 err = -ENOMEM;
3384 if (!np->tx_rings)
3385 goto out_err;
3386
3387 for (i = 0; i < np->num_tx_rings; i++) {
3388 struct tx_ring_info *rp = &np->tx_rings[i];
3389
3390 rp->np = np;
3391 rp->tx_channel = first_tx_channel + i;
3392
3393 err = niu_alloc_tx_ring_info(np, rp);
3394 if (err)
3395 goto out_err;
3396 }
3397
3398 return 0;
3399
3400 out_err:
3401 niu_free_channels(np);
3402 return err;
3403 }
3404
3405 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
3406 {
3407 int limit = 1000;
3408
3409 while (--limit > 0) {
3410 u64 val = nr64(TX_CS(channel));
3411 if (val & TX_CS_SNG_STATE)
3412 return 0;
3413 }
3414 return -ENODEV;
3415 }
3416
3417 static int niu_tx_channel_stop(struct niu *np, int channel)
3418 {
3419 u64 val = nr64(TX_CS(channel));
3420
3421 val |= TX_CS_STOP_N_GO;
3422 nw64(TX_CS(channel), val);
3423
3424 return niu_tx_cs_sng_poll(np, channel);
3425 }
3426
3427 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
3428 {
3429 int limit = 1000;
3430
3431 while (--limit > 0) {
3432 u64 val = nr64(TX_CS(channel));
3433 if (!(val & TX_CS_RST))
3434 return 0;
3435 }
3436 return -ENODEV;
3437 }
3438
3439 static int niu_tx_channel_reset(struct niu *np, int channel)
3440 {
3441 u64 val = nr64(TX_CS(channel));
3442 int err;
3443
3444 val |= TX_CS_RST;
3445 nw64(TX_CS(channel), val);
3446
3447 err = niu_tx_cs_reset_poll(np, channel);
3448 if (!err)
3449 nw64(TX_RING_KICK(channel), 0);
3450
3451 return err;
3452 }
3453
3454 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
3455 {
3456 u64 val;
3457
3458 nw64(TX_LOG_MASK1(channel), 0);
3459 nw64(TX_LOG_VAL1(channel), 0);
3460 nw64(TX_LOG_MASK2(channel), 0);
3461 nw64(TX_LOG_VAL2(channel), 0);
3462 nw64(TX_LOG_PAGE_RELO1(channel), 0);
3463 nw64(TX_LOG_PAGE_RELO2(channel), 0);
3464 nw64(TX_LOG_PAGE_HDL(channel), 0);
3465
3466 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
3467 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
3468 nw64(TX_LOG_PAGE_VLD(channel), val);
3469
3470 /* XXX TXDMA 32bit mode? XXX */
3471
3472 return 0;
3473 }
3474
3475 static void niu_txc_enable_port(struct niu *np, int on)
3476 {
3477 unsigned long flags;
3478 u64 val, mask;
3479
3480 niu_lock_parent(np, flags);
3481 val = nr64(TXC_CONTROL);
3482 mask = (u64)1 << np->port;
3483 if (on) {
3484 val |= TXC_CONTROL_ENABLE | mask;
3485 } else {
3486 val &= ~mask;
3487 if ((val & ~TXC_CONTROL_ENABLE) == 0)
3488 val &= ~TXC_CONTROL_ENABLE;
3489 }
3490 nw64(TXC_CONTROL, val);
3491 niu_unlock_parent(np, flags);
3492 }
3493
3494 static void niu_txc_set_imask(struct niu *np, u64 imask)
3495 {
3496 unsigned long flags;
3497 u64 val;
3498
3499 niu_lock_parent(np, flags);
3500 val = nr64(TXC_INT_MASK);
3501 val &= ~TXC_INT_MASK_VAL(np->port);
3502 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
3503 niu_unlock_parent(np, flags);
3504 }
3505
3506 static void niu_txc_port_dma_enable(struct niu *np, int on)
3507 {
3508 u64 val = 0;
3509
3510 if (on) {
3511 int i;
3512
3513 for (i = 0; i < np->num_tx_rings; i++)
3514 val |= (1 << np->tx_rings[i].tx_channel);
3515 }
3516 nw64(TXC_PORT_DMA(np->port), val);
3517 }
3518
3519 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
3520 {
3521 int err, channel = rp->tx_channel;
3522 u64 val, ring_len;
3523
3524 err = niu_tx_channel_stop(np, channel);
3525 if (err)
3526 return err;
3527
3528 err = niu_tx_channel_reset(np, channel);
3529 if (err)
3530 return err;
3531
3532 err = niu_tx_channel_lpage_init(np, channel);
3533 if (err)
3534 return err;
3535
3536 nw64(TXC_DMA_MAX(channel), rp->max_burst);
3537 nw64(TX_ENT_MSK(channel), 0);
3538
3539 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
3540 TX_RNG_CFIG_STADDR)) {
3541 dev_err(np->device, PFX "%s: TX ring channel %d "
3542 "DMA addr (%llx) is not aligned.\n",
3543 np->dev->name, channel,
3544 (unsigned long long) rp->descr_dma);
3545 return -EINVAL;
3546 }
3547
3548 /* The length field in TX_RNG_CFIG is measured in 64-byte
3549 * blocks. rp->pending is the number of TX descriptors in
3550 * our ring, 8 bytes each, thus we divide by 8 bytes more
3551 * to get the proper value the chip wants.
3552 */
3553 ring_len = (rp->pending / 8);
3554
3555 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
3556 rp->descr_dma);
3557 nw64(TX_RNG_CFIG(channel), val);
3558
3559 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
3560 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
3561 dev_err(np->device, PFX "%s: TX ring channel %d "
3562 "MBOX addr (%llx) is has illegal bits.\n",
3563 np->dev->name, channel,
3564 (unsigned long long) rp->mbox_dma);
3565 return -EINVAL;
3566 }
3567 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
3568 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
3569
3570 nw64(TX_CS(channel), 0);
3571
3572 rp->last_pkt_cnt = 0;
3573
3574 return 0;
3575 }
3576
3577 static void niu_init_rdc_groups(struct niu *np)
3578 {
3579 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
3580 int i, first_table_num = tp->first_table_num;
3581
3582 for (i = 0; i < tp->num_tables; i++) {
3583 struct rdc_table *tbl = &tp->tables[i];
3584 int this_table = first_table_num + i;
3585 int slot;
3586
3587 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
3588 nw64(RDC_TBL(this_table, slot),
3589 tbl->rxdma_channel[slot]);
3590 }
3591
3592 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
3593 }
3594
3595 static void niu_init_drr_weight(struct niu *np)
3596 {
3597 int type = phy_decode(np->parent->port_phy, np->port);
3598 u64 val;
3599
3600 switch (type) {
3601 case PORT_TYPE_10G:
3602 val = PT_DRR_WEIGHT_DEFAULT_10G;
3603 break;
3604
3605 case PORT_TYPE_1G:
3606 default:
3607 val = PT_DRR_WEIGHT_DEFAULT_1G;
3608 break;
3609 }
3610 nw64(PT_DRR_WT(np->port), val);
3611 }
3612
3613 static int niu_init_hostinfo(struct niu *np)
3614 {
3615 struct niu_parent *parent = np->parent;
3616 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
3617 int i, err, num_alt = niu_num_alt_addr(np);
3618 int first_rdc_table = tp->first_table_num;
3619
3620 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
3621 if (err)
3622 return err;
3623
3624 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
3625 if (err)
3626 return err;
3627
3628 for (i = 0; i < num_alt; i++) {
3629 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
3630 if (err)
3631 return err;
3632 }
3633
3634 return 0;
3635 }
3636
3637 static int niu_rx_channel_reset(struct niu *np, int channel)
3638 {
3639 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
3640 RXDMA_CFIG1_RST, 1000, 10,
3641 "RXDMA_CFIG1");
3642 }
3643
3644 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
3645 {
3646 u64 val;
3647
3648 nw64(RX_LOG_MASK1(channel), 0);
3649 nw64(RX_LOG_VAL1(channel), 0);
3650 nw64(RX_LOG_MASK2(channel), 0);
3651 nw64(RX_LOG_VAL2(channel), 0);
3652 nw64(RX_LOG_PAGE_RELO1(channel), 0);
3653 nw64(RX_LOG_PAGE_RELO2(channel), 0);
3654 nw64(RX_LOG_PAGE_HDL(channel), 0);
3655
3656 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
3657 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
3658 nw64(RX_LOG_PAGE_VLD(channel), val);
3659
3660 return 0;
3661 }
3662
3663 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
3664 {
3665 u64 val;
3666
3667 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
3668 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
3669 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
3670 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
3671 nw64(RDC_RED_PARA(rp->rx_channel), val);
3672 }
3673
3674 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
3675 {
3676 u64 val = 0;
3677
3678 switch (rp->rbr_block_size) {
3679 case 4 * 1024:
3680 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
3681 break;
3682 case 8 * 1024:
3683 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
3684 break;
3685 case 16 * 1024:
3686 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
3687 break;
3688 case 32 * 1024:
3689 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
3690 break;
3691 default:
3692 return -EINVAL;
3693 }
3694 val |= RBR_CFIG_B_VLD2;
3695 switch (rp->rbr_sizes[2]) {
3696 case 2 * 1024:
3697 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
3698 break;
3699 case 4 * 1024:
3700 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
3701 break;
3702 case 8 * 1024:
3703 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
3704 break;
3705 case 16 * 1024:
3706 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
3707 break;
3708
3709 default:
3710 return -EINVAL;
3711 }
3712 val |= RBR_CFIG_B_VLD1;
3713 switch (rp->rbr_sizes[1]) {
3714 case 1 * 1024:
3715 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
3716 break;
3717 case 2 * 1024:
3718 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
3719 break;
3720 case 4 * 1024:
3721 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
3722 break;
3723 case 8 * 1024:
3724 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
3725 break;
3726
3727 default:
3728 return -EINVAL;
3729 }
3730 val |= RBR_CFIG_B_VLD0;
3731 switch (rp->rbr_sizes[0]) {
3732 case 256:
3733 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
3734 break;
3735 case 512:
3736 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
3737 break;
3738 case 1 * 1024:
3739 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
3740 break;
3741 case 2 * 1024:
3742 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
3743 break;
3744
3745 default:
3746 return -EINVAL;
3747 }
3748
3749 *ret = val;
3750 return 0;
3751 }
3752
3753 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
3754 {
3755 u64 val = nr64(RXDMA_CFIG1(channel));
3756 int limit;
3757
3758 if (on)
3759 val |= RXDMA_CFIG1_EN;
3760 else
3761 val &= ~RXDMA_CFIG1_EN;
3762 nw64(RXDMA_CFIG1(channel), val);
3763
3764 limit = 1000;
3765 while (--limit > 0) {
3766 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
3767 break;
3768 udelay(10);
3769 }
3770 if (limit <= 0)
3771 return -ENODEV;
3772 return 0;
3773 }
3774
3775 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
3776 {
3777 int err, channel = rp->rx_channel;
3778 u64 val;
3779
3780 err = niu_rx_channel_reset(np, channel);
3781 if (err)
3782 return err;
3783
3784 err = niu_rx_channel_lpage_init(np, channel);
3785 if (err)
3786 return err;
3787
3788 niu_rx_channel_wred_init(np, rp);
3789
3790 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
3791 nw64(RX_DMA_CTL_STAT(channel),
3792 (RX_DMA_CTL_STAT_MEX |
3793 RX_DMA_CTL_STAT_RCRTHRES |
3794 RX_DMA_CTL_STAT_RCRTO |
3795 RX_DMA_CTL_STAT_RBR_EMPTY));
3796 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
3797 nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
3798 nw64(RBR_CFIG_A(channel),
3799 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
3800 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
3801 err = niu_compute_rbr_cfig_b(rp, &val);
3802 if (err)
3803 return err;
3804 nw64(RBR_CFIG_B(channel), val);
3805 nw64(RCRCFIG_A(channel),
3806 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
3807 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
3808 nw64(RCRCFIG_B(channel),
3809 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
3810 RCRCFIG_B_ENTOUT |
3811 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
3812
3813 err = niu_enable_rx_channel(np, channel, 1);
3814 if (err)
3815 return err;
3816
3817 nw64(RBR_KICK(channel), rp->rbr_index);
3818
3819 val = nr64(RX_DMA_CTL_STAT(channel));
3820 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
3821 nw64(RX_DMA_CTL_STAT(channel), val);
3822
3823 return 0;
3824 }
3825
3826 static int niu_init_rx_channels(struct niu *np)
3827 {
3828 unsigned long flags;
3829 u64 seed = jiffies_64;
3830 int err, i;
3831
3832 niu_lock_parent(np, flags);
3833 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
3834 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
3835 niu_unlock_parent(np, flags);
3836
3837 /* XXX RXDMA 32bit mode? XXX */
3838
3839 niu_init_rdc_groups(np);
3840 niu_init_drr_weight(np);
3841
3842 err = niu_init_hostinfo(np);
3843 if (err)
3844 return err;
3845
3846 for (i = 0; i < np->num_rx_rings; i++) {
3847 struct rx_ring_info *rp = &np->rx_rings[i];
3848
3849 err = niu_init_one_rx_channel(np, rp);
3850 if (err)
3851 return err;
3852 }
3853
3854 return 0;
3855 }
3856
3857 static int niu_set_ip_frag_rule(struct niu *np)
3858 {
3859 struct niu_parent *parent = np->parent;
3860 struct niu_classifier *cp = &np->clas;
3861 struct niu_tcam_entry *tp;
3862 int index, err;
3863
3864 /* XXX fix this allocation scheme XXX */
3865 index = cp->tcam_index;
3866 tp = &parent->tcam[index];
3867
3868 /* Note that the noport bit is the same in both ipv4 and
3869 * ipv6 format TCAM entries.
3870 */
3871 memset(tp, 0, sizeof(*tp));
3872 tp->key[1] = TCAM_V4KEY1_NOPORT;
3873 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
3874 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
3875 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
3876 err = tcam_write(np, index, tp->key, tp->key_mask);
3877 if (err)
3878 return err;
3879 err = tcam_assoc_write(np, index, tp->assoc_data);
3880 if (err)
3881 return err;
3882
3883 return 0;
3884 }
3885
3886 static int niu_init_classifier_hw(struct niu *np)
3887 {
3888 struct niu_parent *parent = np->parent;
3889 struct niu_classifier *cp = &np->clas;
3890 int i, err;
3891
3892 nw64(H1POLY, cp->h1_init);
3893 nw64(H2POLY, cp->h2_init);
3894
3895 err = niu_init_hostinfo(np);
3896 if (err)
3897 return err;
3898
3899 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
3900 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
3901
3902 vlan_tbl_write(np, i, np->port,
3903 vp->vlan_pref, vp->rdc_num);
3904 }
3905
3906 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
3907 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
3908
3909 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
3910 ap->rdc_num, ap->mac_pref);
3911 if (err)
3912 return err;
3913 }
3914
3915 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
3916 int index = i - CLASS_CODE_USER_PROG1;
3917
3918 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
3919 if (err)
3920 return err;
3921 err = niu_set_flow_key(np, i, parent->flow_key[index]);
3922 if (err)
3923 return err;
3924 }
3925
3926 err = niu_set_ip_frag_rule(np);
3927 if (err)
3928 return err;
3929
3930 tcam_enable(np, 1);
3931
3932 return 0;
3933 }
3934
3935 static int niu_zcp_write(struct niu *np, int index, u64 *data)
3936 {
3937 nw64(ZCP_RAM_DATA0, data[0]);
3938 nw64(ZCP_RAM_DATA1, data[1]);
3939 nw64(ZCP_RAM_DATA2, data[2]);
3940 nw64(ZCP_RAM_DATA3, data[3]);
3941 nw64(ZCP_RAM_DATA4, data[4]);
3942 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
3943 nw64(ZCP_RAM_ACC,
3944 (ZCP_RAM_ACC_WRITE |
3945 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3946 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3947
3948 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3949 1000, 100);
3950 }
3951
3952 static int niu_zcp_read(struct niu *np, int index, u64 *data)
3953 {
3954 int err;
3955
3956 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3957 1000, 100);
3958 if (err) {
3959 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
3960 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3961 (unsigned long long) nr64(ZCP_RAM_ACC));
3962 return err;
3963 }
3964
3965 nw64(ZCP_RAM_ACC,
3966 (ZCP_RAM_ACC_READ |
3967 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3968 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3969
3970 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3971 1000, 100);
3972 if (err) {
3973 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
3974 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3975 (unsigned long long) nr64(ZCP_RAM_ACC));
3976 return err;
3977 }
3978
3979 data[0] = nr64(ZCP_RAM_DATA0);
3980 data[1] = nr64(ZCP_RAM_DATA1);
3981 data[2] = nr64(ZCP_RAM_DATA2);
3982 data[3] = nr64(ZCP_RAM_DATA3);
3983 data[4] = nr64(ZCP_RAM_DATA4);
3984
3985 return 0;
3986 }
3987
3988 static void niu_zcp_cfifo_reset(struct niu *np)
3989 {
3990 u64 val = nr64(RESET_CFIFO);
3991
3992 val |= RESET_CFIFO_RST(np->port);
3993 nw64(RESET_CFIFO, val);
3994 udelay(10);
3995
3996 val &= ~RESET_CFIFO_RST(np->port);
3997 nw64(RESET_CFIFO, val);
3998 }
3999
4000 static int niu_init_zcp(struct niu *np)
4001 {
4002 u64 data[5], rbuf[5];
4003 int i, max, err;
4004
4005 if (np->parent->plat_type != PLAT_TYPE_NIU) {
4006 if (np->port == 0 || np->port == 1)
4007 max = ATLAS_P0_P1_CFIFO_ENTRIES;
4008 else
4009 max = ATLAS_P2_P3_CFIFO_ENTRIES;
4010 } else
4011 max = NIU_CFIFO_ENTRIES;
4012
4013 data[0] = 0;
4014 data[1] = 0;
4015 data[2] = 0;
4016 data[3] = 0;
4017 data[4] = 0;
4018
4019 for (i = 0; i < max; i++) {
4020 err = niu_zcp_write(np, i, data);
4021 if (err)
4022 return err;
4023 err = niu_zcp_read(np, i, rbuf);
4024 if (err)
4025 return err;
4026 }
4027
4028 niu_zcp_cfifo_reset(np);
4029 nw64(CFIFO_ECC(np->port), 0);
4030 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
4031 (void) nr64(ZCP_INT_STAT);
4032 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
4033
4034 return 0;
4035 }
4036
4037 static void niu_ipp_write(struct niu *np, int index, u64 *data)
4038 {
4039 u64 val = nr64_ipp(IPP_CFIG);
4040
4041 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
4042 nw64_ipp(IPP_DFIFO_WR_PTR, index);
4043 nw64_ipp(IPP_DFIFO_WR0, data[0]);
4044 nw64_ipp(IPP_DFIFO_WR1, data[1]);
4045 nw64_ipp(IPP_DFIFO_WR2, data[2]);
4046 nw64_ipp(IPP_DFIFO_WR3, data[3]);
4047 nw64_ipp(IPP_DFIFO_WR4, data[4]);
4048 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
4049 }
4050
4051 static void niu_ipp_read(struct niu *np, int index, u64 *data)
4052 {
4053 nw64_ipp(IPP_DFIFO_RD_PTR, index);
4054 data[0] = nr64_ipp(IPP_DFIFO_RD0);
4055 data[1] = nr64_ipp(IPP_DFIFO_RD1);
4056 data[2] = nr64_ipp(IPP_DFIFO_RD2);
4057 data[3] = nr64_ipp(IPP_DFIFO_RD3);
4058 data[4] = nr64_ipp(IPP_DFIFO_RD4);
4059 }
4060
4061 static int niu_ipp_reset(struct niu *np)
4062 {
4063 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
4064 1000, 100, "IPP_CFIG");
4065 }
4066
4067 static int niu_init_ipp(struct niu *np)
4068 {
4069 u64 data[5], rbuf[5], val;
4070 int i, max, err;
4071
4072 if (np->parent->plat_type != PLAT_TYPE_NIU) {
4073 if (np->port == 0 || np->port == 1)
4074 max = ATLAS_P0_P1_DFIFO_ENTRIES;
4075 else
4076 max = ATLAS_P2_P3_DFIFO_ENTRIES;
4077 } else
4078 max = NIU_DFIFO_ENTRIES;
4079
4080 data[0] = 0;
4081 data[1] = 0;
4082 data[2] = 0;
4083 data[3] = 0;
4084 data[4] = 0;
4085
4086 for (i = 0; i < max; i++) {
4087 niu_ipp_write(np, i, data);
4088 niu_ipp_read(np, i, rbuf);
4089 }
4090
4091 (void) nr64_ipp(IPP_INT_STAT);
4092 (void) nr64_ipp(IPP_INT_STAT);
4093
4094 err = niu_ipp_reset(np);
4095 if (err)
4096 return err;
4097
4098 (void) nr64_ipp(IPP_PKT_DIS);
4099 (void) nr64_ipp(IPP_BAD_CS_CNT);
4100 (void) nr64_ipp(IPP_ECC);
4101
4102 (void) nr64_ipp(IPP_INT_STAT);
4103
4104 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
4105
4106 val = nr64_ipp(IPP_CFIG);
4107 val &= ~IPP_CFIG_IP_MAX_PKT;
4108 val |= (IPP_CFIG_IPP_ENABLE |
4109 IPP_CFIG_DFIFO_ECC_EN |
4110 IPP_CFIG_DROP_BAD_CRC |
4111 IPP_CFIG_CKSUM_EN |
4112 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
4113 nw64_ipp(IPP_CFIG, val);
4114
4115 return 0;
4116 }
4117
4118 static void niu_handle_led(struct niu *np, int status)
4119 {
4120 u64 val;
4121 val = nr64_mac(XMAC_CONFIG);
4122
4123 if ((np->flags & NIU_FLAGS_10G) != 0 &&
4124 (np->flags & NIU_FLAGS_FIBER) != 0) {
4125 if (status) {
4126 val |= XMAC_CONFIG_LED_POLARITY;
4127 val &= ~XMAC_CONFIG_FORCE_LED_ON;
4128 } else {
4129 val |= XMAC_CONFIG_FORCE_LED_ON;
4130 val &= ~XMAC_CONFIG_LED_POLARITY;
4131 }
4132 }
4133
4134 nw64_mac(XMAC_CONFIG, val);
4135 }
4136
4137 static void niu_init_xif_xmac(struct niu *np)
4138 {
4139 struct niu_link_config *lp = &np->link_config;
4140 u64 val;
4141
4142 val = nr64_mac(XMAC_CONFIG);
4143 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
4144
4145 val |= XMAC_CONFIG_TX_OUTPUT_EN;
4146
4147 if (lp->loopback_mode == LOOPBACK_MAC) {
4148 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
4149 val |= XMAC_CONFIG_LOOPBACK;
4150 } else {
4151 val &= ~XMAC_CONFIG_LOOPBACK;
4152 }
4153
4154 if (np->flags & NIU_FLAGS_10G) {
4155 val &= ~XMAC_CONFIG_LFS_DISABLE;
4156 } else {
4157 val |= XMAC_CONFIG_LFS_DISABLE;
4158 if (!(np->flags & NIU_FLAGS_FIBER))
4159 val |= XMAC_CONFIG_1G_PCS_BYPASS;
4160 else
4161 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
4162 }
4163
4164 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4165
4166 if (lp->active_speed == SPEED_100)
4167 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
4168 else
4169 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
4170
4171 nw64_mac(XMAC_CONFIG, val);
4172
4173 val = nr64_mac(XMAC_CONFIG);
4174 val &= ~XMAC_CONFIG_MODE_MASK;
4175 if (np->flags & NIU_FLAGS_10G) {
4176 val |= XMAC_CONFIG_MODE_XGMII;
4177 } else {
4178 if (lp->active_speed == SPEED_100)
4179 val |= XMAC_CONFIG_MODE_MII;
4180 else
4181 val |= XMAC_CONFIG_MODE_GMII;
4182 }
4183
4184 nw64_mac(XMAC_CONFIG, val);
4185 }
4186
4187 static void niu_init_xif_bmac(struct niu *np)
4188 {
4189 struct niu_link_config *lp = &np->link_config;
4190 u64 val;
4191
4192 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
4193
4194 if (lp->loopback_mode == LOOPBACK_MAC)
4195 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
4196 else
4197 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
4198
4199 if (lp->active_speed == SPEED_1000)
4200 val |= BMAC_XIF_CONFIG_GMII_MODE;
4201 else
4202 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
4203
4204 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
4205 BMAC_XIF_CONFIG_LED_POLARITY);
4206
4207 if (!(np->flags & NIU_FLAGS_10G) &&
4208 !(np->flags & NIU_FLAGS_FIBER) &&
4209 lp->active_speed == SPEED_100)
4210 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
4211 else
4212 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
4213
4214 nw64_mac(BMAC_XIF_CONFIG, val);
4215 }
4216
4217 static void niu_init_xif(struct niu *np)
4218 {
4219 if (np->flags & NIU_FLAGS_XMAC)
4220 niu_init_xif_xmac(np);
4221 else
4222 niu_init_xif_bmac(np);
4223 }
4224
4225 static void niu_pcs_mii_reset(struct niu *np)
4226 {
4227 u64 val = nr64_pcs(PCS_MII_CTL);
4228 val |= PCS_MII_CTL_RST;
4229 nw64_pcs(PCS_MII_CTL, val);
4230 }
4231
4232 static void niu_xpcs_reset(struct niu *np)
4233 {
4234 u64 val = nr64_xpcs(XPCS_CONTROL1);
4235 val |= XPCS_CONTROL1_RESET;
4236 nw64_xpcs(XPCS_CONTROL1, val);
4237 }
4238
4239 static int niu_init_pcs(struct niu *np)
4240 {
4241 struct niu_link_config *lp = &np->link_config;
4242 u64 val;
4243
4244 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
4245 case NIU_FLAGS_FIBER:
4246 /* 1G fiber */
4247 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
4248 nw64_pcs(PCS_DPATH_MODE, 0);
4249 niu_pcs_mii_reset(np);
4250 break;
4251
4252 case NIU_FLAGS_10G:
4253 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
4254 if (!(np->flags & NIU_FLAGS_XMAC))
4255 return -EINVAL;
4256
4257 /* 10G copper or fiber */
4258 val = nr64_mac(XMAC_CONFIG);
4259 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4260 nw64_mac(XMAC_CONFIG, val);
4261
4262 niu_xpcs_reset(np);
4263
4264 val = nr64_xpcs(XPCS_CONTROL1);
4265 if (lp->loopback_mode == LOOPBACK_PHY)
4266 val |= XPCS_CONTROL1_LOOPBACK;
4267 else
4268 val &= ~XPCS_CONTROL1_LOOPBACK;
4269 nw64_xpcs(XPCS_CONTROL1, val);
4270
4271 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
4272 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
4273 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
4274 break;
4275
4276 case 0:
4277 /* 1G copper */
4278 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
4279 niu_pcs_mii_reset(np);
4280 break;
4281
4282 default:
4283 return -EINVAL;
4284 }
4285
4286 return 0;
4287 }
4288
4289 static int niu_reset_tx_xmac(struct niu *np)
4290 {
4291 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
4292 (XTXMAC_SW_RST_REG_RS |
4293 XTXMAC_SW_RST_SOFT_RST),
4294 1000, 100, "XTXMAC_SW_RST");
4295 }
4296
4297 static int niu_reset_tx_bmac(struct niu *np)
4298 {
4299 int limit;
4300
4301 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
4302 limit = 1000;
4303 while (--limit >= 0) {
4304 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
4305 break;
4306 udelay(100);
4307 }
4308 if (limit < 0) {
4309 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
4310 "BTXMAC_SW_RST[%llx]\n",
4311 np->port,
4312 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
4313 return -ENODEV;
4314 }
4315
4316 return 0;
4317 }
4318
4319 static int niu_reset_tx_mac(struct niu *np)
4320 {
4321 if (np->flags & NIU_FLAGS_XMAC)
4322 return niu_reset_tx_xmac(np);
4323 else
4324 return niu_reset_tx_bmac(np);
4325 }
4326
4327 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
4328 {
4329 u64 val;
4330
4331 val = nr64_mac(XMAC_MIN);
4332 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
4333 XMAC_MIN_RX_MIN_PKT_SIZE);
4334 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
4335 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
4336 nw64_mac(XMAC_MIN, val);
4337
4338 nw64_mac(XMAC_MAX, max);
4339
4340 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
4341
4342 val = nr64_mac(XMAC_IPG);
4343 if (np->flags & NIU_FLAGS_10G) {
4344 val &= ~XMAC_IPG_IPG_XGMII;
4345 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
4346 } else {
4347 val &= ~XMAC_IPG_IPG_MII_GMII;
4348 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
4349 }
4350 nw64_mac(XMAC_IPG, val);
4351
4352 val = nr64_mac(XMAC_CONFIG);
4353 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
4354 XMAC_CONFIG_STRETCH_MODE |
4355 XMAC_CONFIG_VAR_MIN_IPG_EN |
4356 XMAC_CONFIG_TX_ENABLE);
4357 nw64_mac(XMAC_CONFIG, val);
4358
4359 nw64_mac(TXMAC_FRM_CNT, 0);
4360 nw64_mac(TXMAC_BYTE_CNT, 0);
4361 }
4362
4363 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
4364 {
4365 u64 val;
4366
4367 nw64_mac(BMAC_MIN_FRAME, min);
4368 nw64_mac(BMAC_MAX_FRAME, max);
4369
4370 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
4371 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
4372 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
4373
4374 val = nr64_mac(BTXMAC_CONFIG);
4375 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
4376 BTXMAC_CONFIG_ENABLE);
4377 nw64_mac(BTXMAC_CONFIG, val);
4378 }
4379
4380 static void niu_init_tx_mac(struct niu *np)
4381 {
4382 u64 min, max;
4383
4384 min = 64;
4385 if (np->dev->mtu > ETH_DATA_LEN)
4386 max = 9216;
4387 else
4388 max = 1522;
4389
4390 /* The XMAC_MIN register only accepts values for TX min which
4391 * have the low 3 bits cleared.
4392 */
4393 BUILD_BUG_ON(min & 0x7);
4394
4395 if (np->flags & NIU_FLAGS_XMAC)
4396 niu_init_tx_xmac(np, min, max);
4397 else
4398 niu_init_tx_bmac(np, min, max);
4399 }
4400
4401 static int niu_reset_rx_xmac(struct niu *np)
4402 {
4403 int limit;
4404
4405 nw64_mac(XRXMAC_SW_RST,
4406 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
4407 limit = 1000;
4408 while (--limit >= 0) {
4409 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
4410 XRXMAC_SW_RST_SOFT_RST)))
4411 break;
4412 udelay(100);
4413 }
4414 if (limit < 0) {
4415 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
4416 "XRXMAC_SW_RST[%llx]\n",
4417 np->port,
4418 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
4419 return -ENODEV;
4420 }
4421
4422 return 0;
4423 }
4424
4425 static int niu_reset_rx_bmac(struct niu *np)
4426 {
4427 int limit;
4428
4429 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
4430 limit = 1000;
4431 while (--limit >= 0) {
4432 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
4433 break;
4434 udelay(100);
4435 }
4436 if (limit < 0) {
4437 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
4438 "BRXMAC_SW_RST[%llx]\n",
4439 np->port,
4440 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
4441 return -ENODEV;
4442 }
4443
4444 return 0;
4445 }
4446
4447 static int niu_reset_rx_mac(struct niu *np)
4448 {
4449 if (np->flags & NIU_FLAGS_XMAC)
4450 return niu_reset_rx_xmac(np);
4451 else
4452 return niu_reset_rx_bmac(np);
4453 }
4454
4455 static void niu_init_rx_xmac(struct niu *np)
4456 {
4457 struct niu_parent *parent = np->parent;
4458 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4459 int first_rdc_table = tp->first_table_num;
4460 unsigned long i;
4461 u64 val;
4462
4463 nw64_mac(XMAC_ADD_FILT0, 0);
4464 nw64_mac(XMAC_ADD_FILT1, 0);
4465 nw64_mac(XMAC_ADD_FILT2, 0);
4466 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
4467 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
4468 for (i = 0; i < MAC_NUM_HASH; i++)
4469 nw64_mac(XMAC_HASH_TBL(i), 0);
4470 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
4471 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4472 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4473
4474 val = nr64_mac(XMAC_CONFIG);
4475 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
4476 XMAC_CONFIG_PROMISCUOUS |
4477 XMAC_CONFIG_PROMISC_GROUP |
4478 XMAC_CONFIG_ERR_CHK_DIS |
4479 XMAC_CONFIG_RX_CRC_CHK_DIS |
4480 XMAC_CONFIG_RESERVED_MULTICAST |
4481 XMAC_CONFIG_RX_CODEV_CHK_DIS |
4482 XMAC_CONFIG_ADDR_FILTER_EN |
4483 XMAC_CONFIG_RCV_PAUSE_ENABLE |
4484 XMAC_CONFIG_STRIP_CRC |
4485 XMAC_CONFIG_PASS_FLOW_CTRL |
4486 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
4487 val |= (XMAC_CONFIG_HASH_FILTER_EN);
4488 nw64_mac(XMAC_CONFIG, val);
4489
4490 nw64_mac(RXMAC_BT_CNT, 0);
4491 nw64_mac(RXMAC_BC_FRM_CNT, 0);
4492 nw64_mac(RXMAC_MC_FRM_CNT, 0);
4493 nw64_mac(RXMAC_FRAG_CNT, 0);
4494 nw64_mac(RXMAC_HIST_CNT1, 0);
4495 nw64_mac(RXMAC_HIST_CNT2, 0);
4496 nw64_mac(RXMAC_HIST_CNT3, 0);
4497 nw64_mac(RXMAC_HIST_CNT4, 0);
4498 nw64_mac(RXMAC_HIST_CNT5, 0);
4499 nw64_mac(RXMAC_HIST_CNT6, 0);
4500 nw64_mac(RXMAC_HIST_CNT7, 0);
4501 nw64_mac(RXMAC_MPSZER_CNT, 0);
4502 nw64_mac(RXMAC_CRC_ER_CNT, 0);
4503 nw64_mac(RXMAC_CD_VIO_CNT, 0);
4504 nw64_mac(LINK_FAULT_CNT, 0);
4505 }
4506
4507 static void niu_init_rx_bmac(struct niu *np)
4508 {
4509 struct niu_parent *parent = np->parent;
4510 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4511 int first_rdc_table = tp->first_table_num;
4512 unsigned long i;
4513 u64 val;
4514
4515 nw64_mac(BMAC_ADD_FILT0, 0);
4516 nw64_mac(BMAC_ADD_FILT1, 0);
4517 nw64_mac(BMAC_ADD_FILT2, 0);
4518 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
4519 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
4520 for (i = 0; i < MAC_NUM_HASH; i++)
4521 nw64_mac(BMAC_HASH_TBL(i), 0);
4522 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4523 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4524 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
4525
4526 val = nr64_mac(BRXMAC_CONFIG);
4527 val &= ~(BRXMAC_CONFIG_ENABLE |
4528 BRXMAC_CONFIG_STRIP_PAD |
4529 BRXMAC_CONFIG_STRIP_FCS |
4530 BRXMAC_CONFIG_PROMISC |
4531 BRXMAC_CONFIG_PROMISC_GRP |
4532 BRXMAC_CONFIG_ADDR_FILT_EN |
4533 BRXMAC_CONFIG_DISCARD_DIS);
4534 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
4535 nw64_mac(BRXMAC_CONFIG, val);
4536
4537 val = nr64_mac(BMAC_ADDR_CMPEN);
4538 val |= BMAC_ADDR_CMPEN_EN0;
4539 nw64_mac(BMAC_ADDR_CMPEN, val);
4540 }
4541
4542 static void niu_init_rx_mac(struct niu *np)
4543 {
4544 niu_set_primary_mac(np, np->dev->dev_addr);
4545
4546 if (np->flags & NIU_FLAGS_XMAC)
4547 niu_init_rx_xmac(np);
4548 else
4549 niu_init_rx_bmac(np);
4550 }
4551
4552 static void niu_enable_tx_xmac(struct niu *np, int on)
4553 {
4554 u64 val = nr64_mac(XMAC_CONFIG);
4555
4556 if (on)
4557 val |= XMAC_CONFIG_TX_ENABLE;
4558 else
4559 val &= ~XMAC_CONFIG_TX_ENABLE;
4560 nw64_mac(XMAC_CONFIG, val);
4561 }
4562
4563 static void niu_enable_tx_bmac(struct niu *np, int on)
4564 {
4565 u64 val = nr64_mac(BTXMAC_CONFIG);
4566
4567 if (on)
4568 val |= BTXMAC_CONFIG_ENABLE;
4569 else
4570 val &= ~BTXMAC_CONFIG_ENABLE;
4571 nw64_mac(BTXMAC_CONFIG, val);
4572 }
4573
4574 static void niu_enable_tx_mac(struct niu *np, int on)
4575 {
4576 if (np->flags & NIU_FLAGS_XMAC)
4577 niu_enable_tx_xmac(np, on);
4578 else
4579 niu_enable_tx_bmac(np, on);
4580 }
4581
4582 static void niu_enable_rx_xmac(struct niu *np, int on)
4583 {
4584 u64 val = nr64_mac(XMAC_CONFIG);
4585
4586 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
4587 XMAC_CONFIG_PROMISCUOUS);
4588
4589 if (np->flags & NIU_FLAGS_MCAST)
4590 val |= XMAC_CONFIG_HASH_FILTER_EN;
4591 if (np->flags & NIU_FLAGS_PROMISC)
4592 val |= XMAC_CONFIG_PROMISCUOUS;
4593
4594 if (on)
4595 val |= XMAC_CONFIG_RX_MAC_ENABLE;
4596 else
4597 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
4598 nw64_mac(XMAC_CONFIG, val);
4599 }
4600
4601 static void niu_enable_rx_bmac(struct niu *np, int on)
4602 {
4603 u64 val = nr64_mac(BRXMAC_CONFIG);
4604
4605 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
4606 BRXMAC_CONFIG_PROMISC);
4607
4608 if (np->flags & NIU_FLAGS_MCAST)
4609 val |= BRXMAC_CONFIG_HASH_FILT_EN;
4610 if (np->flags & NIU_FLAGS_PROMISC)
4611 val |= BRXMAC_CONFIG_PROMISC;
4612
4613 if (on)
4614 val |= BRXMAC_CONFIG_ENABLE;
4615 else
4616 val &= ~BRXMAC_CONFIG_ENABLE;
4617 nw64_mac(BRXMAC_CONFIG, val);
4618 }
4619
4620 static void niu_enable_rx_mac(struct niu *np, int on)
4621 {
4622 if (np->flags & NIU_FLAGS_XMAC)
4623 niu_enable_rx_xmac(np, on);
4624 else
4625 niu_enable_rx_bmac(np, on);
4626 }
4627
4628 static int niu_init_mac(struct niu *np)
4629 {
4630 int err;
4631
4632 niu_init_xif(np);
4633 err = niu_init_pcs(np);
4634 if (err)
4635 return err;
4636
4637 err = niu_reset_tx_mac(np);
4638 if (err)
4639 return err;
4640 niu_init_tx_mac(np);
4641 err = niu_reset_rx_mac(np);
4642 if (err)
4643 return err;
4644 niu_init_rx_mac(np);
4645
4646 /* This looks hookey but the RX MAC reset we just did will
4647 * undo some of the state we setup in niu_init_tx_mac() so we
4648 * have to call it again. In particular, the RX MAC reset will
4649 * set the XMAC_MAX register back to it's default value.
4650 */
4651 niu_init_tx_mac(np);
4652 niu_enable_tx_mac(np, 1);
4653
4654 niu_enable_rx_mac(np, 1);
4655
4656 return 0;
4657 }
4658
4659 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4660 {
4661 (void) niu_tx_channel_stop(np, rp->tx_channel);
4662 }
4663
4664 static void niu_stop_tx_channels(struct niu *np)
4665 {
4666 int i;
4667
4668 for (i = 0; i < np->num_tx_rings; i++) {
4669 struct tx_ring_info *rp = &np->tx_rings[i];
4670
4671 niu_stop_one_tx_channel(np, rp);
4672 }
4673 }
4674
4675 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4676 {
4677 (void) niu_tx_channel_reset(np, rp->tx_channel);
4678 }
4679
4680 static void niu_reset_tx_channels(struct niu *np)
4681 {
4682 int i;
4683
4684 for (i = 0; i < np->num_tx_rings; i++) {
4685 struct tx_ring_info *rp = &np->tx_rings[i];
4686
4687 niu_reset_one_tx_channel(np, rp);
4688 }
4689 }
4690
4691 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4692 {
4693 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
4694 }
4695
4696 static void niu_stop_rx_channels(struct niu *np)
4697 {
4698 int i;
4699
4700 for (i = 0; i < np->num_rx_rings; i++) {
4701 struct rx_ring_info *rp = &np->rx_rings[i];
4702
4703 niu_stop_one_rx_channel(np, rp);
4704 }
4705 }
4706
4707 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4708 {
4709 int channel = rp->rx_channel;
4710
4711 (void) niu_rx_channel_reset(np, channel);
4712 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
4713 nw64(RX_DMA_CTL_STAT(channel), 0);
4714 (void) niu_enable_rx_channel(np, channel, 0);
4715 }
4716
4717 static void niu_reset_rx_channels(struct niu *np)
4718 {
4719 int i;
4720
4721 for (i = 0; i < np->num_rx_rings; i++) {
4722 struct rx_ring_info *rp = &np->rx_rings[i];
4723
4724 niu_reset_one_rx_channel(np, rp);
4725 }
4726 }
4727
4728 static void niu_disable_ipp(struct niu *np)
4729 {
4730 u64 rd, wr, val;
4731 int limit;
4732
4733 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4734 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4735 limit = 100;
4736 while (--limit >= 0 && (rd != wr)) {
4737 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4738 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4739 }
4740 if (limit < 0 &&
4741 (rd != 0 && wr != 1)) {
4742 dev_err(np->device, PFX "%s: IPP would not quiesce, "
4743 "rd_ptr[%llx] wr_ptr[%llx]\n",
4744 np->dev->name,
4745 (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
4746 (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
4747 }
4748
4749 val = nr64_ipp(IPP_CFIG);
4750 val &= ~(IPP_CFIG_IPP_ENABLE |
4751 IPP_CFIG_DFIFO_ECC_EN |
4752 IPP_CFIG_DROP_BAD_CRC |
4753 IPP_CFIG_CKSUM_EN);
4754 nw64_ipp(IPP_CFIG, val);
4755
4756 (void) niu_ipp_reset(np);
4757 }
4758
4759 static int niu_init_hw(struct niu *np)
4760 {
4761 int i, err;
4762
4763 niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
4764 niu_txc_enable_port(np, 1);
4765 niu_txc_port_dma_enable(np, 1);
4766 niu_txc_set_imask(np, 0);
4767
4768 niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
4769 for (i = 0; i < np->num_tx_rings; i++) {
4770 struct tx_ring_info *rp = &np->tx_rings[i];
4771
4772 err = niu_init_one_tx_channel(np, rp);
4773 if (err)
4774 return err;
4775 }
4776
4777 niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
4778 err = niu_init_rx_channels(np);
4779 if (err)
4780 goto out_uninit_tx_channels;
4781
4782 niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
4783 err = niu_init_classifier_hw(np);
4784 if (err)
4785 goto out_uninit_rx_channels;
4786
4787 niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
4788 err = niu_init_zcp(np);
4789 if (err)
4790 goto out_uninit_rx_channels;
4791
4792 niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
4793 err = niu_init_ipp(np);
4794 if (err)
4795 goto out_uninit_rx_channels;
4796
4797 niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
4798 err = niu_init_mac(np);
4799 if (err)
4800 goto out_uninit_ipp;
4801
4802 return 0;
4803
4804 out_uninit_ipp:
4805 niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
4806 niu_disable_ipp(np);
4807
4808 out_uninit_rx_channels:
4809 niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
4810 niu_stop_rx_channels(np);
4811 niu_reset_rx_channels(np);
4812
4813 out_uninit_tx_channels:
4814 niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
4815 niu_stop_tx_channels(np);
4816 niu_reset_tx_channels(np);
4817
4818 return err;
4819 }
4820
4821 static void niu_stop_hw(struct niu *np)
4822 {
4823 niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
4824 niu_enable_interrupts(np, 0);
4825
4826 niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
4827 niu_enable_rx_mac(np, 0);
4828
4829 niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
4830 niu_disable_ipp(np);
4831
4832 niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
4833 niu_stop_tx_channels(np);
4834
4835 niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
4836 niu_stop_rx_channels(np);
4837
4838 niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
4839 niu_reset_tx_channels(np);
4840
4841 niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
4842 niu_reset_rx_channels(np);
4843 }
4844
4845 static int niu_request_irq(struct niu *np)
4846 {
4847 int i, j, err;
4848
4849 err = 0;
4850 for (i = 0; i < np->num_ldg; i++) {
4851 struct niu_ldg *lp = &np->ldg[i];
4852
4853 err = request_irq(lp->irq, niu_interrupt,
4854 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
4855 np->dev->name, lp);
4856 if (err)
4857 goto out_free_irqs;
4858
4859 }
4860
4861 return 0;
4862
4863 out_free_irqs:
4864 for (j = 0; j < i; j++) {
4865 struct niu_ldg *lp = &np->ldg[j];
4866
4867 free_irq(lp->irq, lp);
4868 }
4869 return err;
4870 }
4871
4872 static void niu_free_irq(struct niu *np)
4873 {
4874 int i;
4875
4876 for (i = 0; i < np->num_ldg; i++) {
4877 struct niu_ldg *lp = &np->ldg[i];
4878
4879 free_irq(lp->irq, lp);
4880 }
4881 }
4882
4883 static void niu_enable_napi(struct niu *np)
4884 {
4885 int i;
4886
4887 for (i = 0; i < np->num_ldg; i++)
4888 napi_enable(&np->ldg[i].napi);
4889 }
4890
4891 static void niu_disable_napi(struct niu *np)
4892 {
4893 int i;
4894
4895 for (i = 0; i < np->num_ldg; i++)
4896 napi_disable(&np->ldg[i].napi);
4897 }
4898
4899 static int niu_open(struct net_device *dev)
4900 {
4901 struct niu *np = netdev_priv(dev);
4902 int err;
4903
4904 netif_carrier_off(dev);
4905
4906 err = niu_alloc_channels(np);
4907 if (err)
4908 goto out_err;
4909
4910 err = niu_enable_interrupts(np, 0);
4911 if (err)
4912 goto out_free_channels;
4913
4914 err = niu_request_irq(np);
4915 if (err)
4916 goto out_free_channels;
4917
4918 niu_enable_napi(np);
4919
4920 spin_lock_irq(&np->lock);
4921
4922 err = niu_init_hw(np);
4923 if (!err) {
4924 init_timer(&np->timer);
4925 np->timer.expires = jiffies + HZ;
4926 np->timer.data = (unsigned long) np;
4927 np->timer.function = niu_timer;
4928
4929 err = niu_enable_interrupts(np, 1);
4930 if (err)
4931 niu_stop_hw(np);
4932 }
4933
4934 spin_unlock_irq(&np->lock);
4935
4936 if (err) {
4937 niu_disable_napi(np);
4938 goto out_free_irq;
4939 }
4940
4941 netif_start_queue(dev);
4942
4943 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
4944 netif_carrier_on(dev);
4945
4946 add_timer(&np->timer);
4947
4948 return 0;
4949
4950 out_free_irq:
4951 niu_free_irq(np);
4952
4953 out_free_channels:
4954 niu_free_channels(np);
4955
4956 out_err:
4957 return err;
4958 }
4959
4960 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
4961 {
4962 cancel_work_sync(&np->reset_task);
4963
4964 niu_disable_napi(np);
4965 netif_stop_queue(dev);
4966
4967 del_timer_sync(&np->timer);
4968
4969 spin_lock_irq(&np->lock);
4970
4971 niu_stop_hw(np);
4972
4973 spin_unlock_irq(&np->lock);
4974 }
4975
4976 static int niu_close(struct net_device *dev)
4977 {
4978 struct niu *np = netdev_priv(dev);
4979
4980 niu_full_shutdown(np, dev);
4981
4982 niu_free_irq(np);
4983
4984 niu_free_channels(np);
4985
4986 niu_handle_led(np, 0);
4987
4988 return 0;
4989 }
4990
4991 static void niu_sync_xmac_stats(struct niu *np)
4992 {
4993 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
4994
4995 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
4996 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
4997
4998 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
4999 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
5000 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
5001 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
5002 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
5003 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
5004 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
5005 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
5006 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
5007 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
5008 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
5009 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
5010 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
5011 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
5012 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
5013 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
5014 }
5015
5016 static void niu_sync_bmac_stats(struct niu *np)
5017 {
5018 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
5019
5020 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
5021 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
5022
5023 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
5024 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
5025 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
5026 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
5027 }
5028
5029 static void niu_sync_mac_stats(struct niu *np)
5030 {
5031 if (np->flags & NIU_FLAGS_XMAC)
5032 niu_sync_xmac_stats(np);
5033 else
5034 niu_sync_bmac_stats(np);
5035 }
5036
5037 static void niu_get_rx_stats(struct niu *np)
5038 {
5039 unsigned long pkts, dropped, errors, bytes;
5040 int i;
5041
5042 pkts = dropped = errors = bytes = 0;
5043 for (i = 0; i < np->num_rx_rings; i++) {
5044 struct rx_ring_info *rp = &np->rx_rings[i];
5045
5046 pkts += rp->rx_packets;
5047 bytes += rp->rx_bytes;
5048 dropped += rp->rx_dropped;
5049 errors += rp->rx_errors;
5050 }
5051 np->net_stats.rx_packets = pkts;
5052 np->net_stats.rx_bytes = bytes;
5053 np->net_stats.rx_dropped = dropped;
5054 np->net_stats.rx_errors = errors;
5055 }
5056
5057 static void niu_get_tx_stats(struct niu *np)
5058 {
5059 unsigned long pkts, errors, bytes;
5060 int i;
5061
5062 pkts = errors = bytes = 0;
5063 for (i = 0; i < np->num_tx_rings; i++) {
5064 struct tx_ring_info *rp = &np->tx_rings[i];
5065
5066 pkts += rp->tx_packets;
5067 bytes += rp->tx_bytes;
5068 errors += rp->tx_errors;
5069 }
5070 np->net_stats.tx_packets = pkts;
5071 np->net_stats.tx_bytes = bytes;
5072 np->net_stats.tx_errors = errors;
5073 }
5074
5075 static struct net_device_stats *niu_get_stats(struct net_device *dev)
5076 {
5077 struct niu *np = netdev_priv(dev);
5078
5079 niu_get_rx_stats(np);
5080 niu_get_tx_stats(np);
5081
5082 return &np->net_stats;
5083 }
5084
5085 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
5086 {
5087 int i;
5088
5089 for (i = 0; i < 16; i++)
5090 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
5091 }
5092
5093 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
5094 {
5095 int i;
5096
5097 for (i = 0; i < 16; i++)
5098 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
5099 }
5100
5101 static void niu_load_hash(struct niu *np, u16 *hash)
5102 {
5103 if (np->flags & NIU_FLAGS_XMAC)
5104 niu_load_hash_xmac(np, hash);
5105 else
5106 niu_load_hash_bmac(np, hash);
5107 }
5108
5109 static void niu_set_rx_mode(struct net_device *dev)
5110 {
5111 struct niu *np = netdev_priv(dev);
5112 int i, alt_cnt, err;
5113 struct dev_addr_list *addr;
5114 unsigned long flags;
5115 u16 hash[16] = { 0, };
5116
5117 spin_lock_irqsave(&np->lock, flags);
5118 niu_enable_rx_mac(np, 0);
5119
5120 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
5121 if (dev->flags & IFF_PROMISC)
5122 np->flags |= NIU_FLAGS_PROMISC;
5123 if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
5124 np->flags |= NIU_FLAGS_MCAST;
5125
5126 alt_cnt = dev->uc_count;
5127 if (alt_cnt > niu_num_alt_addr(np)) {
5128 alt_cnt = 0;
5129 np->flags |= NIU_FLAGS_PROMISC;
5130 }
5131
5132 if (alt_cnt) {
5133 int index = 0;
5134
5135 for (addr = dev->uc_list; addr; addr = addr->next) {
5136 err = niu_set_alt_mac(np, index,
5137 addr->da_addr);
5138 if (err)
5139 printk(KERN_WARNING PFX "%s: Error %d "
5140 "adding alt mac %d\n",
5141 dev->name, err, index);
5142 err = niu_enable_alt_mac(np, index, 1);
5143 if (err)
5144 printk(KERN_WARNING PFX "%s: Error %d "
5145 "enabling alt mac %d\n",
5146 dev->name, err, index);
5147
5148 index++;
5149 }
5150 } else {
5151 int alt_start;
5152 if (np->flags & NIU_FLAGS_XMAC)
5153 alt_start = 0;
5154 else
5155 alt_start = 1;
5156 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
5157 err = niu_enable_alt_mac(np, i, 0);
5158 if (err)
5159 printk(KERN_WARNING PFX "%s: Error %d "
5160 "disabling alt mac %d\n",
5161 dev->name, err, i);
5162 }
5163 }
5164 if (dev->flags & IFF_ALLMULTI) {
5165 for (i = 0; i < 16; i++)
5166 hash[i] = 0xffff;
5167 } else if (dev->mc_count > 0) {
5168 for (addr = dev->mc_list; addr; addr = addr->next) {
5169 u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
5170
5171 crc >>= 24;
5172 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
5173 }
5174 }
5175
5176 if (np->flags & NIU_FLAGS_MCAST)
5177 niu_load_hash(np, hash);
5178
5179 niu_enable_rx_mac(np, 1);
5180 spin_unlock_irqrestore(&np->lock, flags);
5181 }
5182
5183 static int niu_set_mac_addr(struct net_device *dev, void *p)
5184 {
5185 struct niu *np = netdev_priv(dev);
5186 struct sockaddr *addr = p;
5187 unsigned long flags;
5188
5189 if (!is_valid_ether_addr(addr->sa_data))
5190 return -EINVAL;
5191
5192 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
5193
5194 if (!netif_running(dev))
5195 return 0;
5196
5197 spin_lock_irqsave(&np->lock, flags);
5198 niu_enable_rx_mac(np, 0);
5199 niu_set_primary_mac(np, dev->dev_addr);
5200 niu_enable_rx_mac(np, 1);
5201 spin_unlock_irqrestore(&np->lock, flags);
5202
5203 return 0;
5204 }
5205
5206 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
5207 {
5208 return -EOPNOTSUPP;
5209 }
5210
5211 static void niu_netif_stop(struct niu *np)
5212 {
5213 np->dev->trans_start = jiffies; /* prevent tx timeout */
5214
5215 niu_disable_napi(np);
5216
5217 netif_tx_disable(np->dev);
5218 }
5219
5220 static void niu_netif_start(struct niu *np)
5221 {
5222 /* NOTE: unconditional netif_wake_queue is only appropriate
5223 * so long as all callers are assured to have free tx slots
5224 * (such as after niu_init_hw).
5225 */
5226 netif_wake_queue(np->dev);
5227
5228 niu_enable_napi(np);
5229
5230 niu_enable_interrupts(np, 1);
5231 }
5232
5233 static void niu_reset_task(struct work_struct *work)
5234 {
5235 struct niu *np = container_of(work, struct niu, reset_task);
5236 unsigned long flags;
5237 int err;
5238
5239 spin_lock_irqsave(&np->lock, flags);
5240 if (!netif_running(np->dev)) {
5241 spin_unlock_irqrestore(&np->lock, flags);
5242 return;
5243 }
5244
5245 spin_unlock_irqrestore(&np->lock, flags);
5246
5247 del_timer_sync(&np->timer);
5248
5249 niu_netif_stop(np);
5250
5251 spin_lock_irqsave(&np->lock, flags);
5252
5253 niu_stop_hw(np);
5254
5255 err = niu_init_hw(np);
5256 if (!err) {
5257 np->timer.expires = jiffies + HZ;
5258 add_timer(&np->timer);
5259 niu_netif_start(np);
5260 }
5261
5262 spin_unlock_irqrestore(&np->lock, flags);
5263 }
5264
5265 static void niu_tx_timeout(struct net_device *dev)
5266 {
5267 struct niu *np = netdev_priv(dev);
5268
5269 dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
5270 dev->name);
5271
5272 schedule_work(&np->reset_task);
5273 }
5274
5275 static void niu_set_txd(struct tx_ring_info *rp, int index,
5276 u64 mapping, u64 len, u64 mark,
5277 u64 n_frags)
5278 {
5279 __le64 *desc = &rp->descr[index];
5280
5281 *desc = cpu_to_le64(mark |
5282 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
5283 (len << TX_DESC_TR_LEN_SHIFT) |
5284 (mapping & TX_DESC_SAD));
5285 }
5286
5287 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
5288 u64 pad_bytes, u64 len)
5289 {
5290 u16 eth_proto, eth_proto_inner;
5291 u64 csum_bits, l3off, ihl, ret;
5292 u8 ip_proto;
5293 int ipv6;
5294
5295 eth_proto = be16_to_cpu(ehdr->h_proto);
5296 eth_proto_inner = eth_proto;
5297 if (eth_proto == ETH_P_8021Q) {
5298 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
5299 __be16 val = vp->h_vlan_encapsulated_proto;
5300
5301 eth_proto_inner = be16_to_cpu(val);
5302 }
5303
5304 ipv6 = ihl = 0;
5305 switch (skb->protocol) {
5306 case __constant_htons(ETH_P_IP):
5307 ip_proto = ip_hdr(skb)->protocol;
5308 ihl = ip_hdr(skb)->ihl;
5309 break;
5310 case __constant_htons(ETH_P_IPV6):
5311 ip_proto = ipv6_hdr(skb)->nexthdr;
5312 ihl = (40 >> 2);
5313 ipv6 = 1;
5314 break;
5315 default:
5316 ip_proto = ihl = 0;
5317 break;
5318 }
5319
5320 csum_bits = TXHDR_CSUM_NONE;
5321 if (skb->ip_summed == CHECKSUM_PARTIAL) {
5322 u64 start, stuff;
5323
5324 csum_bits = (ip_proto == IPPROTO_TCP ?
5325 TXHDR_CSUM_TCP :
5326 (ip_proto == IPPROTO_UDP ?
5327 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
5328
5329 start = skb_transport_offset(skb) -
5330 (pad_bytes + sizeof(struct tx_pkt_hdr));
5331 stuff = start + skb->csum_offset;
5332
5333 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
5334 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
5335 }
5336
5337 l3off = skb_network_offset(skb) -
5338 (pad_bytes + sizeof(struct tx_pkt_hdr));
5339
5340 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
5341 (len << TXHDR_LEN_SHIFT) |
5342 ((l3off / 2) << TXHDR_L3START_SHIFT) |
5343 (ihl << TXHDR_IHL_SHIFT) |
5344 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
5345 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
5346 (ipv6 ? TXHDR_IP_VER : 0) |
5347 csum_bits);
5348
5349 return ret;
5350 }
5351
5352 static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
5353 {
5354 return &np->tx_rings[0];
5355 }
5356
5357 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
5358 {
5359 struct niu *np = netdev_priv(dev);
5360 unsigned long align, headroom;
5361 struct tx_ring_info *rp;
5362 struct tx_pkt_hdr *tp;
5363 unsigned int len, nfg;
5364 struct ethhdr *ehdr;
5365 int prod, i, tlen;
5366 u64 mapping, mrk;
5367
5368 rp = tx_ring_select(np, skb);
5369
5370 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
5371 netif_stop_queue(dev);
5372 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
5373 "queue awake!\n", dev->name);
5374 rp->tx_errors++;
5375 return NETDEV_TX_BUSY;
5376 }
5377
5378 if (skb->len < ETH_ZLEN) {
5379 unsigned int pad_bytes = ETH_ZLEN - skb->len;
5380
5381 if (skb_pad(skb, pad_bytes))
5382 goto out;
5383 skb_put(skb, pad_bytes);
5384 }
5385
5386 len = sizeof(struct tx_pkt_hdr) + 15;
5387 if (skb_headroom(skb) < len) {
5388 struct sk_buff *skb_new;
5389
5390 skb_new = skb_realloc_headroom(skb, len);
5391 if (!skb_new) {
5392 rp->tx_errors++;
5393 goto out_drop;
5394 }
5395 kfree_skb(skb);
5396 skb = skb_new;
5397 } else
5398 skb_orphan(skb);
5399
5400 align = ((unsigned long) skb->data & (16 - 1));
5401 headroom = align + sizeof(struct tx_pkt_hdr);
5402
5403 ehdr = (struct ethhdr *) skb->data;
5404 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
5405
5406 len = skb->len - sizeof(struct tx_pkt_hdr);
5407 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
5408 tp->resv = 0;
5409
5410 len = skb_headlen(skb);
5411 mapping = np->ops->map_single(np->device, skb->data,
5412 len, DMA_TO_DEVICE);
5413
5414 prod = rp->prod;
5415
5416 rp->tx_buffs[prod].skb = skb;
5417 rp->tx_buffs[prod].mapping = mapping;
5418
5419 mrk = TX_DESC_SOP;
5420 if (++rp->mark_counter == rp->mark_freq) {
5421 rp->mark_counter = 0;
5422 mrk |= TX_DESC_MARK;
5423 rp->mark_pending++;
5424 }
5425
5426 tlen = len;
5427 nfg = skb_shinfo(skb)->nr_frags;
5428 while (tlen > 0) {
5429 tlen -= MAX_TX_DESC_LEN;
5430 nfg++;
5431 }
5432
5433 while (len > 0) {
5434 unsigned int this_len = len;
5435
5436 if (this_len > MAX_TX_DESC_LEN)
5437 this_len = MAX_TX_DESC_LEN;
5438
5439 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
5440 mrk = nfg = 0;
5441
5442 prod = NEXT_TX(rp, prod);
5443 mapping += this_len;
5444 len -= this_len;
5445 }
5446
5447 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
5448 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
5449
5450 len = frag->size;
5451 mapping = np->ops->map_page(np->device, frag->page,
5452 frag->page_offset, len,
5453 DMA_TO_DEVICE);
5454
5455 rp->tx_buffs[prod].skb = NULL;
5456 rp->tx_buffs[prod].mapping = mapping;
5457
5458 niu_set_txd(rp, prod, mapping, len, 0, 0);
5459
5460 prod = NEXT_TX(rp, prod);
5461 }
5462
5463 if (prod < rp->prod)
5464 rp->wrap_bit ^= TX_RING_KICK_WRAP;
5465 rp->prod = prod;
5466
5467 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
5468
5469 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
5470 netif_stop_queue(dev);
5471 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
5472 netif_wake_queue(dev);
5473 }
5474
5475 dev->trans_start = jiffies;
5476
5477 out:
5478 return NETDEV_TX_OK;
5479
5480 out_drop:
5481 rp->tx_errors++;
5482 kfree_skb(skb);
5483 goto out;
5484 }
5485
5486 static int niu_change_mtu(struct net_device *dev, int new_mtu)
5487 {
5488 struct niu *np = netdev_priv(dev);
5489 int err, orig_jumbo, new_jumbo;
5490
5491 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
5492 return -EINVAL;
5493
5494 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
5495 new_jumbo = (new_mtu > ETH_DATA_LEN);
5496
5497 dev->mtu = new_mtu;
5498
5499 if (!netif_running(dev) ||
5500 (orig_jumbo == new_jumbo))
5501 return 0;
5502
5503 niu_full_shutdown(np, dev);
5504
5505 niu_free_channels(np);
5506
5507 niu_enable_napi(np);
5508
5509 err = niu_alloc_channels(np);
5510 if (err)
5511 return err;
5512
5513 spin_lock_irq(&np->lock);
5514
5515 err = niu_init_hw(np);
5516 if (!err) {
5517 init_timer(&np->timer);
5518 np->timer.expires = jiffies + HZ;
5519 np->timer.data = (unsigned long) np;
5520 np->timer.function = niu_timer;
5521
5522 err = niu_enable_interrupts(np, 1);
5523 if (err)
5524 niu_stop_hw(np);
5525 }
5526
5527 spin_unlock_irq(&np->lock);
5528
5529 if (!err) {
5530 netif_start_queue(dev);
5531 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
5532 netif_carrier_on(dev);
5533
5534 add_timer(&np->timer);
5535 }
5536
5537 return err;
5538 }
5539
5540 static void niu_get_drvinfo(struct net_device *dev,
5541 struct ethtool_drvinfo *info)
5542 {
5543 struct niu *np = netdev_priv(dev);
5544 struct niu_vpd *vpd = &np->vpd;
5545
5546 strcpy(info->driver, DRV_MODULE_NAME);
5547 strcpy(info->version, DRV_MODULE_VERSION);
5548 sprintf(info->fw_version, "%d.%d",
5549 vpd->fcode_major, vpd->fcode_minor);
5550 if (np->parent->plat_type != PLAT_TYPE_NIU)
5551 strcpy(info->bus_info, pci_name(np->pdev));
5552 }
5553
5554 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5555 {
5556 struct niu *np = netdev_priv(dev);
5557 struct niu_link_config *lp;
5558
5559 lp = &np->link_config;
5560
5561 memset(cmd, 0, sizeof(*cmd));
5562 cmd->phy_address = np->phy_addr;
5563 cmd->supported = lp->supported;
5564 cmd->advertising = lp->advertising;
5565 cmd->autoneg = lp->autoneg;
5566 cmd->speed = lp->active_speed;
5567 cmd->duplex = lp->active_duplex;
5568
5569 return 0;
5570 }
5571
5572 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5573 {
5574 return -EINVAL;
5575 }
5576
5577 static u32 niu_get_msglevel(struct net_device *dev)
5578 {
5579 struct niu *np = netdev_priv(dev);
5580 return np->msg_enable;
5581 }
5582
5583 static void niu_set_msglevel(struct net_device *dev, u32 value)
5584 {
5585 struct niu *np = netdev_priv(dev);
5586 np->msg_enable = value;
5587 }
5588
5589 static int niu_get_eeprom_len(struct net_device *dev)
5590 {
5591 struct niu *np = netdev_priv(dev);
5592
5593 return np->eeprom_len;
5594 }
5595
5596 static int niu_get_eeprom(struct net_device *dev,
5597 struct ethtool_eeprom *eeprom, u8 *data)
5598 {
5599 struct niu *np = netdev_priv(dev);
5600 u32 offset, len, val;
5601
5602 offset = eeprom->offset;
5603 len = eeprom->len;
5604
5605 if (offset + len < offset)
5606 return -EINVAL;
5607 if (offset >= np->eeprom_len)
5608 return -EINVAL;
5609 if (offset + len > np->eeprom_len)
5610 len = eeprom->len = np->eeprom_len - offset;
5611
5612 if (offset & 3) {
5613 u32 b_offset, b_count;
5614
5615 b_offset = offset & 3;
5616 b_count = 4 - b_offset;
5617 if (b_count > len)
5618 b_count = len;
5619
5620 val = nr64(ESPC_NCR((offset - b_offset) / 4));
5621 memcpy(data, ((char *)&val) + b_offset, b_count);
5622 data += b_count;
5623 len -= b_count;
5624 offset += b_count;
5625 }
5626 while (len >= 4) {
5627 val = nr64(ESPC_NCR(offset / 4));
5628 memcpy(data, &val, 4);
5629 data += 4;
5630 len -= 4;
5631 offset += 4;
5632 }
5633 if (len) {
5634 val = nr64(ESPC_NCR(offset / 4));
5635 memcpy(data, &val, len);
5636 }
5637 return 0;
5638 }
5639
5640 static const struct {
5641 const char string[ETH_GSTRING_LEN];
5642 } niu_xmac_stat_keys[] = {
5643 { "tx_frames" },
5644 { "tx_bytes" },
5645 { "tx_fifo_errors" },
5646 { "tx_overflow_errors" },
5647 { "tx_max_pkt_size_errors" },
5648 { "tx_underflow_errors" },
5649 { "rx_local_faults" },
5650 { "rx_remote_faults" },
5651 { "rx_link_faults" },
5652 { "rx_align_errors" },
5653 { "rx_frags" },
5654 { "rx_mcasts" },
5655 { "rx_bcasts" },
5656 { "rx_hist_cnt1" },
5657 { "rx_hist_cnt2" },
5658 { "rx_hist_cnt3" },
5659 { "rx_hist_cnt4" },
5660 { "rx_hist_cnt5" },
5661 { "rx_hist_cnt6" },
5662 { "rx_hist_cnt7" },
5663 { "rx_octets" },
5664 { "rx_code_violations" },
5665 { "rx_len_errors" },
5666 { "rx_crc_errors" },
5667 { "rx_underflows" },
5668 { "rx_overflows" },
5669 { "pause_off_state" },
5670 { "pause_on_state" },
5671 { "pause_received" },
5672 };
5673
5674 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
5675
5676 static const struct {
5677 const char string[ETH_GSTRING_LEN];
5678 } niu_bmac_stat_keys[] = {
5679 { "tx_underflow_errors" },
5680 { "tx_max_pkt_size_errors" },
5681 { "tx_bytes" },
5682 { "tx_frames" },
5683 { "rx_overflows" },
5684 { "rx_frames" },
5685 { "rx_align_errors" },
5686 { "rx_crc_errors" },
5687 { "rx_len_errors" },
5688 { "pause_off_state" },
5689 { "pause_on_state" },
5690 { "pause_received" },
5691 };
5692
5693 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
5694
5695 static const struct {
5696 const char string[ETH_GSTRING_LEN];
5697 } niu_rxchan_stat_keys[] = {
5698 { "rx_channel" },
5699 { "rx_packets" },
5700 { "rx_bytes" },
5701 { "rx_dropped" },
5702 { "rx_errors" },
5703 };
5704
5705 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
5706
5707 static const struct {
5708 const char string[ETH_GSTRING_LEN];
5709 } niu_txchan_stat_keys[] = {
5710 { "tx_channel" },
5711 { "tx_packets" },
5712 { "tx_bytes" },
5713 { "tx_errors" },
5714 };
5715
5716 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
5717
5718 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5719 {
5720 struct niu *np = netdev_priv(dev);
5721 int i;
5722
5723 if (stringset != ETH_SS_STATS)
5724 return;
5725
5726 if (np->flags & NIU_FLAGS_XMAC) {
5727 memcpy(data, niu_xmac_stat_keys,
5728 sizeof(niu_xmac_stat_keys));
5729 data += sizeof(niu_xmac_stat_keys);
5730 } else {
5731 memcpy(data, niu_bmac_stat_keys,
5732 sizeof(niu_bmac_stat_keys));
5733 data += sizeof(niu_bmac_stat_keys);
5734 }
5735 for (i = 0; i < np->num_rx_rings; i++) {
5736 memcpy(data, niu_rxchan_stat_keys,
5737 sizeof(niu_rxchan_stat_keys));
5738 data += sizeof(niu_rxchan_stat_keys);
5739 }
5740 for (i = 0; i < np->num_tx_rings; i++) {
5741 memcpy(data, niu_txchan_stat_keys,
5742 sizeof(niu_txchan_stat_keys));
5743 data += sizeof(niu_txchan_stat_keys);
5744 }
5745 }
5746
5747 static int niu_get_stats_count(struct net_device *dev)
5748 {
5749 struct niu *np = netdev_priv(dev);
5750
5751 return ((np->flags & NIU_FLAGS_XMAC ?
5752 NUM_XMAC_STAT_KEYS :
5753 NUM_BMAC_STAT_KEYS) +
5754 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
5755 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
5756 }
5757
5758 static void niu_get_ethtool_stats(struct net_device *dev,
5759 struct ethtool_stats *stats, u64 *data)
5760 {
5761 struct niu *np = netdev_priv(dev);
5762 int i;
5763
5764 niu_sync_mac_stats(np);
5765 if (np->flags & NIU_FLAGS_XMAC) {
5766 memcpy(data, &np->mac_stats.xmac,
5767 sizeof(struct niu_xmac_stats));
5768 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
5769 } else {
5770 memcpy(data, &np->mac_stats.bmac,
5771 sizeof(struct niu_bmac_stats));
5772 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
5773 }
5774 for (i = 0; i < np->num_rx_rings; i++) {
5775 struct rx_ring_info *rp = &np->rx_rings[i];
5776
5777 data[0] = rp->rx_channel;
5778 data[1] = rp->rx_packets;
5779 data[2] = rp->rx_bytes;
5780 data[3] = rp->rx_dropped;
5781 data[4] = rp->rx_errors;
5782 data += 5;
5783 }
5784 for (i = 0; i < np->num_tx_rings; i++) {
5785 struct tx_ring_info *rp = &np->tx_rings[i];
5786
5787 data[0] = rp->tx_channel;
5788 data[1] = rp->tx_packets;
5789 data[2] = rp->tx_bytes;
5790 data[3] = rp->tx_errors;
5791 data += 4;
5792 }
5793 }
5794
5795 static u64 niu_led_state_save(struct niu *np)
5796 {
5797 if (np->flags & NIU_FLAGS_XMAC)
5798 return nr64_mac(XMAC_CONFIG);
5799 else
5800 return nr64_mac(BMAC_XIF_CONFIG);
5801 }
5802
5803 static void niu_led_state_restore(struct niu *np, u64 val)
5804 {
5805 if (np->flags & NIU_FLAGS_XMAC)
5806 nw64_mac(XMAC_CONFIG, val);
5807 else
5808 nw64_mac(BMAC_XIF_CONFIG, val);
5809 }
5810
5811 static void niu_force_led(struct niu *np, int on)
5812 {
5813 u64 val, reg, bit;
5814
5815 if (np->flags & NIU_FLAGS_XMAC) {
5816 reg = XMAC_CONFIG;
5817 bit = XMAC_CONFIG_FORCE_LED_ON;
5818 } else {
5819 reg = BMAC_XIF_CONFIG;
5820 bit = BMAC_XIF_CONFIG_LINK_LED;
5821 }
5822
5823 val = nr64_mac(reg);
5824 if (on)
5825 val |= bit;
5826 else
5827 val &= ~bit;
5828 nw64_mac(reg, val);
5829 }
5830
5831 static int niu_phys_id(struct net_device *dev, u32 data)
5832 {
5833 struct niu *np = netdev_priv(dev);
5834 u64 orig_led_state;
5835 int i;
5836
5837 if (!netif_running(dev))
5838 return -EAGAIN;
5839
5840 if (data == 0)
5841 data = 2;
5842
5843 orig_led_state = niu_led_state_save(np);
5844 for (i = 0; i < (data * 2); i++) {
5845 int on = ((i % 2) == 0);
5846
5847 niu_force_led(np, on);
5848
5849 if (msleep_interruptible(500))
5850 break;
5851 }
5852 niu_led_state_restore(np, orig_led_state);
5853
5854 return 0;
5855 }
5856
5857 static const struct ethtool_ops niu_ethtool_ops = {
5858 .get_drvinfo = niu_get_drvinfo,
5859 .get_link = ethtool_op_get_link,
5860 .get_msglevel = niu_get_msglevel,
5861 .set_msglevel = niu_set_msglevel,
5862 .get_eeprom_len = niu_get_eeprom_len,
5863 .get_eeprom = niu_get_eeprom,
5864 .get_settings = niu_get_settings,
5865 .set_settings = niu_set_settings,
5866 .get_strings = niu_get_strings,
5867 .get_stats_count = niu_get_stats_count,
5868 .get_ethtool_stats = niu_get_ethtool_stats,
5869 .phys_id = niu_phys_id,
5870 };
5871
5872 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
5873 int ldg, int ldn)
5874 {
5875 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
5876 return -EINVAL;
5877 if (ldn < 0 || ldn > LDN_MAX)
5878 return -EINVAL;
5879
5880 parent->ldg_map[ldn] = ldg;
5881
5882 if (np->parent->plat_type == PLAT_TYPE_NIU) {
5883 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
5884 * the firmware, and we're not supposed to change them.
5885 * Validate the mapping, because if it's wrong we probably
5886 * won't get any interrupts and that's painful to debug.
5887 */
5888 if (nr64(LDG_NUM(ldn)) != ldg) {
5889 dev_err(np->device, PFX "Port %u, mis-matched "
5890 "LDG assignment "
5891 "for ldn %d, should be %d is %llu\n",
5892 np->port, ldn, ldg,
5893 (unsigned long long) nr64(LDG_NUM(ldn)));
5894 return -EINVAL;
5895 }
5896 } else
5897 nw64(LDG_NUM(ldn), ldg);
5898
5899 return 0;
5900 }
5901
5902 static int niu_set_ldg_timer_res(struct niu *np, int res)
5903 {
5904 if (res < 0 || res > LDG_TIMER_RES_VAL)
5905 return -EINVAL;
5906
5907
5908 nw64(LDG_TIMER_RES, res);
5909
5910 return 0;
5911 }
5912
5913 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
5914 {
5915 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
5916 (func < 0 || func > 3) ||
5917 (vector < 0 || vector > 0x1f))
5918 return -EINVAL;
5919
5920 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
5921
5922 return 0;
5923 }
5924
5925 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
5926 {
5927 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
5928 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
5929 int limit;
5930
5931 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
5932 return -EINVAL;
5933
5934 frame = frame_base;
5935 nw64(ESPC_PIO_STAT, frame);
5936 limit = 64;
5937 do {
5938 udelay(5);
5939 frame = nr64(ESPC_PIO_STAT);
5940 if (frame & ESPC_PIO_STAT_READ_END)
5941 break;
5942 } while (limit--);
5943 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5944 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5945 (unsigned long long) frame);
5946 return -ENODEV;
5947 }
5948
5949 frame = frame_base;
5950 nw64(ESPC_PIO_STAT, frame);
5951 limit = 64;
5952 do {
5953 udelay(5);
5954 frame = nr64(ESPC_PIO_STAT);
5955 if (frame & ESPC_PIO_STAT_READ_END)
5956 break;
5957 } while (limit--);
5958 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5959 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5960 (unsigned long long) frame);
5961 return -ENODEV;
5962 }
5963
5964 frame = nr64(ESPC_PIO_STAT);
5965 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
5966 }
5967
5968 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
5969 {
5970 int err = niu_pci_eeprom_read(np, off);
5971 u16 val;
5972
5973 if (err < 0)
5974 return err;
5975 val = (err << 8);
5976 err = niu_pci_eeprom_read(np, off + 1);
5977 if (err < 0)
5978 return err;
5979 val |= (err & 0xff);
5980
5981 return val;
5982 }
5983
5984 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
5985 {
5986 int err = niu_pci_eeprom_read(np, off);
5987 u16 val;
5988
5989 if (err < 0)
5990 return err;
5991
5992 val = (err & 0xff);
5993 err = niu_pci_eeprom_read(np, off + 1);
5994 if (err < 0)
5995 return err;
5996
5997 val |= (err & 0xff) << 8;
5998
5999 return val;
6000 }
6001
6002 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
6003 u32 off,
6004 char *namebuf,
6005 int namebuf_len)
6006 {
6007 int i;
6008
6009 for (i = 0; i < namebuf_len; i++) {
6010 int err = niu_pci_eeprom_read(np, off + i);
6011 if (err < 0)
6012 return err;
6013 *namebuf++ = err;
6014 if (!err)
6015 break;
6016 }
6017 if (i >= namebuf_len)
6018 return -EINVAL;
6019
6020 return i + 1;
6021 }
6022
6023 static void __devinit niu_vpd_parse_version(struct niu *np)
6024 {
6025 struct niu_vpd *vpd = &np->vpd;
6026 int len = strlen(vpd->version) + 1;
6027 const char *s = vpd->version;
6028 int i;
6029
6030 for (i = 0; i < len - 5; i++) {
6031 if (!strncmp(s + i, "FCode ", 5))
6032 break;
6033 }
6034 if (i >= len - 5)
6035 return;
6036
6037 s += i + 5;
6038 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
6039
6040 niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
6041 vpd->fcode_major, vpd->fcode_minor);
6042 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
6043 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
6044 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
6045 np->flags |= NIU_FLAGS_VPD_VALID;
6046 }
6047
6048 /* ESPC_PIO_EN_ENABLE must be set */
6049 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
6050 u32 start, u32 end)
6051 {
6052 unsigned int found_mask = 0;
6053 #define FOUND_MASK_MODEL 0x00000001
6054 #define FOUND_MASK_BMODEL 0x00000002
6055 #define FOUND_MASK_VERS 0x00000004
6056 #define FOUND_MASK_MAC 0x00000008
6057 #define FOUND_MASK_NMAC 0x00000010
6058 #define FOUND_MASK_PHY 0x00000020
6059 #define FOUND_MASK_ALL 0x0000003f
6060
6061 niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
6062 start, end);
6063 while (start < end) {
6064 int len, err, instance, type, prop_len;
6065 char namebuf[64];
6066 u8 *prop_buf;
6067 int max_len;
6068
6069 if (found_mask == FOUND_MASK_ALL) {
6070 niu_vpd_parse_version(np);
6071 return 1;
6072 }
6073
6074 err = niu_pci_eeprom_read(np, start + 2);
6075 if (err < 0)
6076 return err;
6077 len = err;
6078 start += 3;
6079
6080 instance = niu_pci_eeprom_read(np, start);
6081 type = niu_pci_eeprom_read(np, start + 3);
6082 prop_len = niu_pci_eeprom_read(np, start + 4);
6083 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
6084 if (err < 0)
6085 return err;
6086
6087 prop_buf = NULL;
6088 max_len = 0;
6089 if (!strcmp(namebuf, "model")) {
6090 prop_buf = np->vpd.model;
6091 max_len = NIU_VPD_MODEL_MAX;
6092 found_mask |= FOUND_MASK_MODEL;
6093 } else if (!strcmp(namebuf, "board-model")) {
6094 prop_buf = np->vpd.board_model;
6095 max_len = NIU_VPD_BD_MODEL_MAX;
6096 found_mask |= FOUND_MASK_BMODEL;
6097 } else if (!strcmp(namebuf, "version")) {
6098 prop_buf = np->vpd.version;
6099 max_len = NIU_VPD_VERSION_MAX;
6100 found_mask |= FOUND_MASK_VERS;
6101 } else if (!strcmp(namebuf, "local-mac-address")) {
6102 prop_buf = np->vpd.local_mac;
6103 max_len = ETH_ALEN;
6104 found_mask |= FOUND_MASK_MAC;
6105 } else if (!strcmp(namebuf, "num-mac-addresses")) {
6106 prop_buf = &np->vpd.mac_num;
6107 max_len = 1;
6108 found_mask |= FOUND_MASK_NMAC;
6109 } else if (!strcmp(namebuf, "phy-type")) {
6110 prop_buf = np->vpd.phy_type;
6111 max_len = NIU_VPD_PHY_TYPE_MAX;
6112 found_mask |= FOUND_MASK_PHY;
6113 }
6114
6115 if (max_len && prop_len > max_len) {
6116 dev_err(np->device, PFX "Property '%s' length (%d) is "
6117 "too long.\n", namebuf, prop_len);
6118 return -EINVAL;
6119 }
6120
6121 if (prop_buf) {
6122 u32 off = start + 5 + err;
6123 int i;
6124
6125 niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
6126 "len[%d]\n", namebuf, prop_len);
6127 for (i = 0; i < prop_len; i++)
6128 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
6129 }
6130
6131 start += len;
6132 }
6133
6134 return 0;
6135 }
6136
6137 /* ESPC_PIO_EN_ENABLE must be set */
6138 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
6139 {
6140 u32 offset;
6141 int err;
6142
6143 err = niu_pci_eeprom_read16_swp(np, start + 1);
6144 if (err < 0)
6145 return;
6146
6147 offset = err + 3;
6148
6149 while (start + offset < ESPC_EEPROM_SIZE) {
6150 u32 here = start + offset;
6151 u32 end;
6152
6153 err = niu_pci_eeprom_read(np, here);
6154 if (err != 0x90)
6155 return;
6156
6157 err = niu_pci_eeprom_read16_swp(np, here + 1);
6158 if (err < 0)
6159 return;
6160
6161 here = start + offset + 3;
6162 end = start + offset + err;
6163
6164 offset += err;
6165
6166 err = niu_pci_vpd_scan_props(np, here, end);
6167 if (err < 0 || err == 1)
6168 return;
6169 }
6170 }
6171
6172 /* ESPC_PIO_EN_ENABLE must be set */
6173 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
6174 {
6175 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
6176 int err;
6177
6178 while (start < end) {
6179 ret = start;
6180
6181 /* ROM header signature? */
6182 err = niu_pci_eeprom_read16(np, start + 0);
6183 if (err != 0x55aa)
6184 return 0;
6185
6186 /* Apply offset to PCI data structure. */
6187 err = niu_pci_eeprom_read16(np, start + 23);
6188 if (err < 0)
6189 return 0;
6190 start += err;
6191
6192 /* Check for "PCIR" signature. */
6193 err = niu_pci_eeprom_read16(np, start + 0);
6194 if (err != 0x5043)
6195 return 0;
6196 err = niu_pci_eeprom_read16(np, start + 2);
6197 if (err != 0x4952)
6198 return 0;
6199
6200 /* Check for OBP image type. */
6201 err = niu_pci_eeprom_read(np, start + 20);
6202 if (err < 0)
6203 return 0;
6204 if (err != 0x01) {
6205 err = niu_pci_eeprom_read(np, ret + 2);
6206 if (err < 0)
6207 return 0;
6208
6209 start = ret + (err * 512);
6210 continue;
6211 }
6212
6213 err = niu_pci_eeprom_read16_swp(np, start + 8);
6214 if (err < 0)
6215 return err;
6216 ret += err;
6217
6218 err = niu_pci_eeprom_read(np, ret + 0);
6219 if (err != 0x82)
6220 return 0;
6221
6222 return ret;
6223 }
6224
6225 return 0;
6226 }
6227
6228 static int __devinit niu_phy_type_prop_decode(struct niu *np,
6229 const char *phy_prop)
6230 {
6231 if (!strcmp(phy_prop, "mif")) {
6232 /* 1G copper, MII */
6233 np->flags &= ~(NIU_FLAGS_FIBER |
6234 NIU_FLAGS_10G);
6235 np->mac_xcvr = MAC_XCVR_MII;
6236 } else if (!strcmp(phy_prop, "xgf")) {
6237 /* 10G fiber, XPCS */
6238 np->flags |= (NIU_FLAGS_10G |
6239 NIU_FLAGS_FIBER);
6240 np->mac_xcvr = MAC_XCVR_XPCS;
6241 } else if (!strcmp(phy_prop, "pcs")) {
6242 /* 1G fiber, PCS */
6243 np->flags &= ~NIU_FLAGS_10G;
6244 np->flags |= NIU_FLAGS_FIBER;
6245 np->mac_xcvr = MAC_XCVR_PCS;
6246 } else if (!strcmp(phy_prop, "xgc")) {
6247 /* 10G copper, XPCS */
6248 np->flags |= NIU_FLAGS_10G;
6249 np->flags &= ~NIU_FLAGS_FIBER;
6250 np->mac_xcvr = MAC_XCVR_XPCS;
6251 } else {
6252 return -EINVAL;
6253 }
6254 return 0;
6255 }
6256
6257 static void __devinit niu_pci_vpd_validate(struct niu *np)
6258 {
6259 struct net_device *dev = np->dev;
6260 struct niu_vpd *vpd = &np->vpd;
6261 u8 val8;
6262
6263 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
6264 dev_err(np->device, PFX "VPD MAC invalid, "
6265 "falling back to SPROM.\n");
6266
6267 np->flags &= ~NIU_FLAGS_VPD_VALID;
6268 return;
6269 }
6270
6271 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6272 dev_err(np->device, PFX "Illegal phy string [%s].\n",
6273 np->vpd.phy_type);
6274 dev_err(np->device, PFX "Falling back to SPROM.\n");
6275 np->flags &= ~NIU_FLAGS_VPD_VALID;
6276 return;
6277 }
6278
6279 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
6280
6281 val8 = dev->perm_addr[5];
6282 dev->perm_addr[5] += np->port;
6283 if (dev->perm_addr[5] < val8)
6284 dev->perm_addr[4]++;
6285
6286 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6287 }
6288
6289 static int __devinit niu_pci_probe_sprom(struct niu *np)
6290 {
6291 struct net_device *dev = np->dev;
6292 int len, i;
6293 u64 val, sum;
6294 u8 val8;
6295
6296 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
6297 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
6298 len = val / 4;
6299
6300 np->eeprom_len = len;
6301
6302 niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
6303
6304 sum = 0;
6305 for (i = 0; i < len; i++) {
6306 val = nr64(ESPC_NCR(i));
6307 sum += (val >> 0) & 0xff;
6308 sum += (val >> 8) & 0xff;
6309 sum += (val >> 16) & 0xff;
6310 sum += (val >> 24) & 0xff;
6311 }
6312 niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
6313 if ((sum & 0xff) != 0xab) {
6314 dev_err(np->device, PFX "Bad SPROM checksum "
6315 "(%x, should be 0xab)\n", (int) (sum & 0xff));
6316 return -EINVAL;
6317 }
6318
6319 val = nr64(ESPC_PHY_TYPE);
6320 switch (np->port) {
6321 case 0:
6322 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
6323 ESPC_PHY_TYPE_PORT0_SHIFT;
6324 break;
6325 case 1:
6326 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
6327 ESPC_PHY_TYPE_PORT1_SHIFT;
6328 break;
6329 case 2:
6330 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
6331 ESPC_PHY_TYPE_PORT2_SHIFT;
6332 break;
6333 case 3:
6334 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
6335 ESPC_PHY_TYPE_PORT3_SHIFT;
6336 break;
6337 default:
6338 dev_err(np->device, PFX "Bogus port number %u\n",
6339 np->port);
6340 return -EINVAL;
6341 }
6342 niudbg(PROBE, "SPROM: PHY type %x\n", val8);
6343
6344 switch (val8) {
6345 case ESPC_PHY_TYPE_1G_COPPER:
6346 /* 1G copper, MII */
6347 np->flags &= ~(NIU_FLAGS_FIBER |
6348 NIU_FLAGS_10G);
6349 np->mac_xcvr = MAC_XCVR_MII;
6350 break;
6351
6352 case ESPC_PHY_TYPE_1G_FIBER:
6353 /* 1G fiber, PCS */
6354 np->flags &= ~NIU_FLAGS_10G;
6355 np->flags |= NIU_FLAGS_FIBER;
6356 np->mac_xcvr = MAC_XCVR_PCS;
6357 break;
6358
6359 case ESPC_PHY_TYPE_10G_COPPER:
6360 /* 10G copper, XPCS */
6361 np->flags |= NIU_FLAGS_10G;
6362 np->flags &= ~NIU_FLAGS_FIBER;
6363 np->mac_xcvr = MAC_XCVR_XPCS;
6364 break;
6365
6366 case ESPC_PHY_TYPE_10G_FIBER:
6367 /* 10G fiber, XPCS */
6368 np->flags |= (NIU_FLAGS_10G |
6369 NIU_FLAGS_FIBER);
6370 np->mac_xcvr = MAC_XCVR_XPCS;
6371 break;
6372
6373 default:
6374 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
6375 return -EINVAL;
6376 }
6377
6378 val = nr64(ESPC_MAC_ADDR0);
6379 niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
6380 (unsigned long long) val);
6381 dev->perm_addr[0] = (val >> 0) & 0xff;
6382 dev->perm_addr[1] = (val >> 8) & 0xff;
6383 dev->perm_addr[2] = (val >> 16) & 0xff;
6384 dev->perm_addr[3] = (val >> 24) & 0xff;
6385
6386 val = nr64(ESPC_MAC_ADDR1);
6387 niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
6388 (unsigned long long) val);
6389 dev->perm_addr[4] = (val >> 0) & 0xff;
6390 dev->perm_addr[5] = (val >> 8) & 0xff;
6391
6392 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6393 dev_err(np->device, PFX "SPROM MAC address invalid\n");
6394 dev_err(np->device, PFX "[ \n");
6395 for (i = 0; i < 6; i++)
6396 printk("%02x ", dev->perm_addr[i]);
6397 printk("]\n");
6398 return -EINVAL;
6399 }
6400
6401 val8 = dev->perm_addr[5];
6402 dev->perm_addr[5] += np->port;
6403 if (dev->perm_addr[5] < val8)
6404 dev->perm_addr[4]++;
6405
6406 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6407
6408 val = nr64(ESPC_MOD_STR_LEN);
6409 niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
6410 (unsigned long long) val);
6411 if (val >= 8 * 4)
6412 return -EINVAL;
6413
6414 for (i = 0; i < val; i += 4) {
6415 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
6416
6417 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
6418 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
6419 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
6420 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
6421 }
6422 np->vpd.model[val] = '\0';
6423
6424 val = nr64(ESPC_BD_MOD_STR_LEN);
6425 niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
6426 (unsigned long long) val);
6427 if (val >= 4 * 4)
6428 return -EINVAL;
6429
6430 for (i = 0; i < val; i += 4) {
6431 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
6432
6433 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
6434 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
6435 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
6436 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
6437 }
6438 np->vpd.board_model[val] = '\0';
6439
6440 np->vpd.mac_num =
6441 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
6442 niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
6443 np->vpd.mac_num);
6444
6445 return 0;
6446 }
6447
6448 static int __devinit niu_get_and_validate_port(struct niu *np)
6449 {
6450 struct niu_parent *parent = np->parent;
6451
6452 if (np->port <= 1)
6453 np->flags |= NIU_FLAGS_XMAC;
6454
6455 if (!parent->num_ports) {
6456 if (parent->plat_type == PLAT_TYPE_NIU) {
6457 parent->num_ports = 2;
6458 } else {
6459 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
6460 ESPC_NUM_PORTS_MACS_VAL;
6461
6462 if (!parent->num_ports)
6463 parent->num_ports = 4;
6464 }
6465 }
6466
6467 niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
6468 np->port, parent->num_ports);
6469 if (np->port >= parent->num_ports)
6470 return -ENODEV;
6471
6472 return 0;
6473 }
6474
6475 static int __devinit phy_record(struct niu_parent *parent,
6476 struct phy_probe_info *p,
6477 int dev_id_1, int dev_id_2, u8 phy_port,
6478 int type)
6479 {
6480 u32 id = (dev_id_1 << 16) | dev_id_2;
6481 u8 idx;
6482
6483 if (dev_id_1 < 0 || dev_id_2 < 0)
6484 return 0;
6485 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
6486 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
6487 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
6488 return 0;
6489 } else {
6490 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
6491 return 0;
6492 }
6493
6494 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
6495 parent->index, id,
6496 (type == PHY_TYPE_PMA_PMD ?
6497 "PMA/PMD" :
6498 (type == PHY_TYPE_PCS ?
6499 "PCS" : "MII")),
6500 phy_port);
6501
6502 if (p->cur[type] >= NIU_MAX_PORTS) {
6503 printk(KERN_ERR PFX "Too many PHY ports.\n");
6504 return -EINVAL;
6505 }
6506 idx = p->cur[type];
6507 p->phy_id[type][idx] = id;
6508 p->phy_port[type][idx] = phy_port;
6509 p->cur[type] = idx + 1;
6510 return 0;
6511 }
6512
6513 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
6514 {
6515 int i;
6516
6517 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
6518 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
6519 return 1;
6520 }
6521 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
6522 if (p->phy_port[PHY_TYPE_PCS][i] == port)
6523 return 1;
6524 }
6525
6526 return 0;
6527 }
6528
6529 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
6530 {
6531 int port, cnt;
6532
6533 cnt = 0;
6534 *lowest = 32;
6535 for (port = 8; port < 32; port++) {
6536 if (port_has_10g(p, port)) {
6537 if (!cnt)
6538 *lowest = port;
6539 cnt++;
6540 }
6541 }
6542
6543 return cnt;
6544 }
6545
6546 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
6547 {
6548 *lowest = 32;
6549 if (p->cur[PHY_TYPE_MII])
6550 *lowest = p->phy_port[PHY_TYPE_MII][0];
6551
6552 return p->cur[PHY_TYPE_MII];
6553 }
6554
6555 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
6556 {
6557 int num_ports = parent->num_ports;
6558 int i;
6559
6560 for (i = 0; i < num_ports; i++) {
6561 parent->rxchan_per_port[i] = (16 / num_ports);
6562 parent->txchan_per_port[i] = (16 / num_ports);
6563
6564 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6565 "[%u TX chans]\n",
6566 parent->index, i,
6567 parent->rxchan_per_port[i],
6568 parent->txchan_per_port[i]);
6569 }
6570 }
6571
6572 static void __devinit niu_divide_channels(struct niu_parent *parent,
6573 int num_10g, int num_1g)
6574 {
6575 int num_ports = parent->num_ports;
6576 int rx_chans_per_10g, rx_chans_per_1g;
6577 int tx_chans_per_10g, tx_chans_per_1g;
6578 int i, tot_rx, tot_tx;
6579
6580 if (!num_10g || !num_1g) {
6581 rx_chans_per_10g = rx_chans_per_1g =
6582 (NIU_NUM_RXCHAN / num_ports);
6583 tx_chans_per_10g = tx_chans_per_1g =
6584 (NIU_NUM_TXCHAN / num_ports);
6585 } else {
6586 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
6587 rx_chans_per_10g = (NIU_NUM_RXCHAN -
6588 (rx_chans_per_1g * num_1g)) /
6589 num_10g;
6590
6591 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
6592 tx_chans_per_10g = (NIU_NUM_TXCHAN -
6593 (tx_chans_per_1g * num_1g)) /
6594 num_10g;
6595 }
6596
6597 tot_rx = tot_tx = 0;
6598 for (i = 0; i < num_ports; i++) {
6599 int type = phy_decode(parent->port_phy, i);
6600
6601 if (type == PORT_TYPE_10G) {
6602 parent->rxchan_per_port[i] = rx_chans_per_10g;
6603 parent->txchan_per_port[i] = tx_chans_per_10g;
6604 } else {
6605 parent->rxchan_per_port[i] = rx_chans_per_1g;
6606 parent->txchan_per_port[i] = tx_chans_per_1g;
6607 }
6608 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6609 "[%u TX chans]\n",
6610 parent->index, i,
6611 parent->rxchan_per_port[i],
6612 parent->txchan_per_port[i]);
6613 tot_rx += parent->rxchan_per_port[i];
6614 tot_tx += parent->txchan_per_port[i];
6615 }
6616
6617 if (tot_rx > NIU_NUM_RXCHAN) {
6618 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
6619 "resetting to one per port.\n",
6620 parent->index, tot_rx);
6621 for (i = 0; i < num_ports; i++)
6622 parent->rxchan_per_port[i] = 1;
6623 }
6624 if (tot_tx > NIU_NUM_TXCHAN) {
6625 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
6626 "resetting to one per port.\n",
6627 parent->index, tot_tx);
6628 for (i = 0; i < num_ports; i++)
6629 parent->txchan_per_port[i] = 1;
6630 }
6631 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
6632 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
6633 "RX[%d] TX[%d]\n",
6634 parent->index, tot_rx, tot_tx);
6635 }
6636 }
6637
6638 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
6639 int num_10g, int num_1g)
6640 {
6641 int i, num_ports = parent->num_ports;
6642 int rdc_group, rdc_groups_per_port;
6643 int rdc_channel_base;
6644
6645 rdc_group = 0;
6646 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
6647
6648 rdc_channel_base = 0;
6649
6650 for (i = 0; i < num_ports; i++) {
6651 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
6652 int grp, num_channels = parent->rxchan_per_port[i];
6653 int this_channel_offset;
6654
6655 tp->first_table_num = rdc_group;
6656 tp->num_tables = rdc_groups_per_port;
6657 this_channel_offset = 0;
6658 for (grp = 0; grp < tp->num_tables; grp++) {
6659 struct rdc_table *rt = &tp->tables[grp];
6660 int slot;
6661
6662 pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
6663 parent->index, i, tp->first_table_num + grp);
6664 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
6665 rt->rxdma_channel[slot] =
6666 rdc_channel_base + this_channel_offset;
6667
6668 printk("%d ", rt->rxdma_channel[slot]);
6669
6670 if (++this_channel_offset == num_channels)
6671 this_channel_offset = 0;
6672 }
6673 printk("]\n");
6674 }
6675
6676 parent->rdc_default[i] = rdc_channel_base;
6677
6678 rdc_channel_base += num_channels;
6679 rdc_group += rdc_groups_per_port;
6680 }
6681 }
6682
6683 static int __devinit fill_phy_probe_info(struct niu *np,
6684 struct niu_parent *parent,
6685 struct phy_probe_info *info)
6686 {
6687 unsigned long flags;
6688 int port, err;
6689
6690 memset(info, 0, sizeof(*info));
6691
6692 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
6693 niu_lock_parent(np, flags);
6694 err = 0;
6695 for (port = 8; port < 32; port++) {
6696 int dev_id_1, dev_id_2;
6697
6698 dev_id_1 = mdio_read(np, port,
6699 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
6700 dev_id_2 = mdio_read(np, port,
6701 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
6702 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6703 PHY_TYPE_PMA_PMD);
6704 if (err)
6705 break;
6706 dev_id_1 = mdio_read(np, port,
6707 NIU_PCS_DEV_ADDR, MII_PHYSID1);
6708 dev_id_2 = mdio_read(np, port,
6709 NIU_PCS_DEV_ADDR, MII_PHYSID2);
6710 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6711 PHY_TYPE_PCS);
6712 if (err)
6713 break;
6714 dev_id_1 = mii_read(np, port, MII_PHYSID1);
6715 dev_id_2 = mii_read(np, port, MII_PHYSID2);
6716 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6717 PHY_TYPE_MII);
6718 if (err)
6719 break;
6720 }
6721 niu_unlock_parent(np, flags);
6722
6723 return err;
6724 }
6725
6726 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
6727 {
6728 struct phy_probe_info *info = &parent->phy_probe_info;
6729 int lowest_10g, lowest_1g;
6730 int num_10g, num_1g;
6731 u32 val;
6732 int err;
6733
6734 err = fill_phy_probe_info(np, parent, info);
6735 if (err)
6736 return err;
6737
6738 num_10g = count_10g_ports(info, &lowest_10g);
6739 num_1g = count_1g_ports(info, &lowest_1g);
6740
6741 switch ((num_10g << 4) | num_1g) {
6742 case 0x24:
6743 if (lowest_1g == 10)
6744 parent->plat_type = PLAT_TYPE_VF_P0;
6745 else if (lowest_1g == 26)
6746 parent->plat_type = PLAT_TYPE_VF_P1;
6747 else
6748 goto unknown_vg_1g_port;
6749
6750 /* fallthru */
6751 case 0x22:
6752 val = (phy_encode(PORT_TYPE_10G, 0) |
6753 phy_encode(PORT_TYPE_10G, 1) |
6754 phy_encode(PORT_TYPE_1G, 2) |
6755 phy_encode(PORT_TYPE_1G, 3));
6756 break;
6757
6758 case 0x20:
6759 val = (phy_encode(PORT_TYPE_10G, 0) |
6760 phy_encode(PORT_TYPE_10G, 1));
6761 break;
6762
6763 case 0x10:
6764 val = phy_encode(PORT_TYPE_10G, np->port);
6765 break;
6766
6767 case 0x14:
6768 if (lowest_1g == 10)
6769 parent->plat_type = PLAT_TYPE_VF_P0;
6770 else if (lowest_1g == 26)
6771 parent->plat_type = PLAT_TYPE_VF_P1;
6772 else
6773 goto unknown_vg_1g_port;
6774
6775 /* fallthru */
6776 case 0x13:
6777 if ((lowest_10g & 0x7) == 0)
6778 val = (phy_encode(PORT_TYPE_10G, 0) |
6779 phy_encode(PORT_TYPE_1G, 1) |
6780 phy_encode(PORT_TYPE_1G, 2) |
6781 phy_encode(PORT_TYPE_1G, 3));
6782 else
6783 val = (phy_encode(PORT_TYPE_1G, 0) |
6784 phy_encode(PORT_TYPE_10G, 1) |
6785 phy_encode(PORT_TYPE_1G, 2) |
6786 phy_encode(PORT_TYPE_1G, 3));
6787 break;
6788
6789 case 0x04:
6790 if (lowest_1g == 10)
6791 parent->plat_type = PLAT_TYPE_VF_P0;
6792 else if (lowest_1g == 26)
6793 parent->plat_type = PLAT_TYPE_VF_P1;
6794 else
6795 goto unknown_vg_1g_port;
6796
6797 val = (phy_encode(PORT_TYPE_1G, 0) |
6798 phy_encode(PORT_TYPE_1G, 1) |
6799 phy_encode(PORT_TYPE_1G, 2) |
6800 phy_encode(PORT_TYPE_1G, 3));
6801 break;
6802
6803 default:
6804 printk(KERN_ERR PFX "Unsupported port config "
6805 "10G[%d] 1G[%d]\n",
6806 num_10g, num_1g);
6807 return -EINVAL;
6808 }
6809
6810 parent->port_phy = val;
6811
6812 if (parent->plat_type == PLAT_TYPE_NIU)
6813 niu_n2_divide_channels(parent);
6814 else
6815 niu_divide_channels(parent, num_10g, num_1g);
6816
6817 niu_divide_rdc_groups(parent, num_10g, num_1g);
6818
6819 return 0;
6820
6821 unknown_vg_1g_port:
6822 printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
6823 lowest_1g);
6824 return -EINVAL;
6825 }
6826
6827 static int __devinit niu_probe_ports(struct niu *np)
6828 {
6829 struct niu_parent *parent = np->parent;
6830 int err, i;
6831
6832 niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
6833 parent->port_phy);
6834
6835 if (parent->port_phy == PORT_PHY_UNKNOWN) {
6836 err = walk_phys(np, parent);
6837 if (err)
6838 return err;
6839
6840 niu_set_ldg_timer_res(np, 2);
6841 for (i = 0; i <= LDN_MAX; i++)
6842 niu_ldn_irq_enable(np, i, 0);
6843 }
6844
6845 if (parent->port_phy == PORT_PHY_INVALID)
6846 return -EINVAL;
6847
6848 return 0;
6849 }
6850
6851 static int __devinit niu_classifier_swstate_init(struct niu *np)
6852 {
6853 struct niu_classifier *cp = &np->clas;
6854
6855 niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
6856 np->parent->tcam_num_entries);
6857
6858 cp->tcam_index = (u16) np->port;
6859 cp->h1_init = 0xffffffff;
6860 cp->h2_init = 0xffff;
6861
6862 return fflp_early_init(np);
6863 }
6864
6865 static void __devinit niu_link_config_init(struct niu *np)
6866 {
6867 struct niu_link_config *lp = &np->link_config;
6868
6869 lp->advertising = (ADVERTISED_10baseT_Half |
6870 ADVERTISED_10baseT_Full |
6871 ADVERTISED_100baseT_Half |
6872 ADVERTISED_100baseT_Full |
6873 ADVERTISED_1000baseT_Half |
6874 ADVERTISED_1000baseT_Full |
6875 ADVERTISED_10000baseT_Full |
6876 ADVERTISED_Autoneg);
6877 lp->speed = lp->active_speed = SPEED_INVALID;
6878 lp->duplex = lp->active_duplex = DUPLEX_INVALID;
6879 #if 0
6880 lp->loopback_mode = LOOPBACK_MAC;
6881 lp->active_speed = SPEED_10000;
6882 lp->active_duplex = DUPLEX_FULL;
6883 #else
6884 lp->loopback_mode = LOOPBACK_DISABLED;
6885 #endif
6886 }
6887
6888 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
6889 {
6890 switch (np->port) {
6891 case 0:
6892 np->mac_regs = np->regs + XMAC_PORT0_OFF;
6893 np->ipp_off = 0x00000;
6894 np->pcs_off = 0x04000;
6895 np->xpcs_off = 0x02000;
6896 break;
6897
6898 case 1:
6899 np->mac_regs = np->regs + XMAC_PORT1_OFF;
6900 np->ipp_off = 0x08000;
6901 np->pcs_off = 0x0a000;
6902 np->xpcs_off = 0x08000;
6903 break;
6904
6905 case 2:
6906 np->mac_regs = np->regs + BMAC_PORT2_OFF;
6907 np->ipp_off = 0x04000;
6908 np->pcs_off = 0x0e000;
6909 np->xpcs_off = ~0UL;
6910 break;
6911
6912 case 3:
6913 np->mac_regs = np->regs + BMAC_PORT3_OFF;
6914 np->ipp_off = 0x0c000;
6915 np->pcs_off = 0x12000;
6916 np->xpcs_off = ~0UL;
6917 break;
6918
6919 default:
6920 dev_err(np->device, PFX "Port %u is invalid, cannot "
6921 "compute MAC block offset.\n", np->port);
6922 return -EINVAL;
6923 }
6924
6925 return 0;
6926 }
6927
6928 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
6929 {
6930 struct msix_entry msi_vec[NIU_NUM_LDG];
6931 struct niu_parent *parent = np->parent;
6932 struct pci_dev *pdev = np->pdev;
6933 int i, num_irqs, err;
6934 u8 first_ldg;
6935
6936 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
6937 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
6938 ldg_num_map[i] = first_ldg + i;
6939
6940 num_irqs = (parent->rxchan_per_port[np->port] +
6941 parent->txchan_per_port[np->port] +
6942 (np->port == 0 ? 3 : 1));
6943 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
6944
6945 retry:
6946 for (i = 0; i < num_irqs; i++) {
6947 msi_vec[i].vector = 0;
6948 msi_vec[i].entry = i;
6949 }
6950
6951 err = pci_enable_msix(pdev, msi_vec, num_irqs);
6952 if (err < 0) {
6953 np->flags &= ~NIU_FLAGS_MSIX;
6954 return;
6955 }
6956 if (err > 0) {
6957 num_irqs = err;
6958 goto retry;
6959 }
6960
6961 np->flags |= NIU_FLAGS_MSIX;
6962 for (i = 0; i < num_irqs; i++)
6963 np->ldg[i].irq = msi_vec[i].vector;
6964 np->num_ldg = num_irqs;
6965 }
6966
6967 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
6968 {
6969 #ifdef CONFIG_SPARC64
6970 struct of_device *op = np->op;
6971 const u32 *int_prop;
6972 int i;
6973
6974 int_prop = of_get_property(op->node, "interrupts", NULL);
6975 if (!int_prop)
6976 return -ENODEV;
6977
6978 for (i = 0; i < op->num_irqs; i++) {
6979 ldg_num_map[i] = int_prop[i];
6980 np->ldg[i].irq = op->irqs[i];
6981 }
6982
6983 np->num_ldg = op->num_irqs;
6984
6985 return 0;
6986 #else
6987 return -EINVAL;
6988 #endif
6989 }
6990
6991 static int __devinit niu_ldg_init(struct niu *np)
6992 {
6993 struct niu_parent *parent = np->parent;
6994 u8 ldg_num_map[NIU_NUM_LDG];
6995 int first_chan, num_chan;
6996 int i, err, ldg_rotor;
6997 u8 port;
6998
6999 np->num_ldg = 1;
7000 np->ldg[0].irq = np->dev->irq;
7001 if (parent->plat_type == PLAT_TYPE_NIU) {
7002 err = niu_n2_irq_init(np, ldg_num_map);
7003 if (err)
7004 return err;
7005 } else
7006 niu_try_msix(np, ldg_num_map);
7007
7008 port = np->port;
7009 for (i = 0; i < np->num_ldg; i++) {
7010 struct niu_ldg *lp = &np->ldg[i];
7011
7012 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
7013
7014 lp->np = np;
7015 lp->ldg_num = ldg_num_map[i];
7016 lp->timer = 2; /* XXX */
7017
7018 /* On N2 NIU the firmware has setup the SID mappings so they go
7019 * to the correct values that will route the LDG to the proper
7020 * interrupt in the NCU interrupt table.
7021 */
7022 if (np->parent->plat_type != PLAT_TYPE_NIU) {
7023 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
7024 if (err)
7025 return err;
7026 }
7027 }
7028
7029 /* We adopt the LDG assignment ordering used by the N2 NIU
7030 * 'interrupt' properties because that simplifies a lot of
7031 * things. This ordering is:
7032 *
7033 * MAC
7034 * MIF (if port zero)
7035 * SYSERR (if port zero)
7036 * RX channels
7037 * TX channels
7038 */
7039
7040 ldg_rotor = 0;
7041
7042 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
7043 LDN_MAC(port));
7044 if (err)
7045 return err;
7046
7047 ldg_rotor++;
7048 if (ldg_rotor == np->num_ldg)
7049 ldg_rotor = 0;
7050
7051 if (port == 0) {
7052 err = niu_ldg_assign_ldn(np, parent,
7053 ldg_num_map[ldg_rotor],
7054 LDN_MIF);
7055 if (err)
7056 return err;
7057
7058 ldg_rotor++;
7059 if (ldg_rotor == np->num_ldg)
7060 ldg_rotor = 0;
7061
7062 err = niu_ldg_assign_ldn(np, parent,
7063 ldg_num_map[ldg_rotor],
7064 LDN_DEVICE_ERROR);
7065 if (err)
7066 return err;
7067
7068 ldg_rotor++;
7069 if (ldg_rotor == np->num_ldg)
7070 ldg_rotor = 0;
7071
7072 }
7073
7074 first_chan = 0;
7075 for (i = 0; i < port; i++)
7076 first_chan += parent->rxchan_per_port[port];
7077 num_chan = parent->rxchan_per_port[port];
7078
7079 for (i = first_chan; i < (first_chan + num_chan); i++) {
7080 err = niu_ldg_assign_ldn(np, parent,
7081 ldg_num_map[ldg_rotor],
7082 LDN_RXDMA(i));
7083 if (err)
7084 return err;
7085 ldg_rotor++;
7086 if (ldg_rotor == np->num_ldg)
7087 ldg_rotor = 0;
7088 }
7089
7090 first_chan = 0;
7091 for (i = 0; i < port; i++)
7092 first_chan += parent->txchan_per_port[port];
7093 num_chan = parent->txchan_per_port[port];
7094 for (i = first_chan; i < (first_chan + num_chan); i++) {
7095 err = niu_ldg_assign_ldn(np, parent,
7096 ldg_num_map[ldg_rotor],
7097 LDN_TXDMA(i));
7098 if (err)
7099 return err;
7100 ldg_rotor++;
7101 if (ldg_rotor == np->num_ldg)
7102 ldg_rotor = 0;
7103 }
7104
7105 return 0;
7106 }
7107
7108 static void __devexit niu_ldg_free(struct niu *np)
7109 {
7110 if (np->flags & NIU_FLAGS_MSIX)
7111 pci_disable_msix(np->pdev);
7112 }
7113
7114 static int __devinit niu_get_of_props(struct niu *np)
7115 {
7116 #ifdef CONFIG_SPARC64
7117 struct net_device *dev = np->dev;
7118 struct device_node *dp;
7119 const char *phy_type;
7120 const u8 *mac_addr;
7121 int prop_len;
7122
7123 if (np->parent->plat_type == PLAT_TYPE_NIU)
7124 dp = np->op->node;
7125 else
7126 dp = pci_device_to_OF_node(np->pdev);
7127
7128 phy_type = of_get_property(dp, "phy-type", &prop_len);
7129 if (!phy_type) {
7130 dev_err(np->device, PFX "%s: OF node lacks "
7131 "phy-type property\n",
7132 dp->full_name);
7133 return -EINVAL;
7134 }
7135
7136 if (!strcmp(phy_type, "none"))
7137 return -ENODEV;
7138
7139 strcpy(np->vpd.phy_type, phy_type);
7140
7141 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
7142 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
7143 dp->full_name, np->vpd.phy_type);
7144 return -EINVAL;
7145 }
7146
7147 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
7148 if (!mac_addr) {
7149 dev_err(np->device, PFX "%s: OF node lacks "
7150 "local-mac-address property\n",
7151 dp->full_name);
7152 return -EINVAL;
7153 }
7154 if (prop_len != dev->addr_len) {
7155 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
7156 "is wrong.\n",
7157 dp->full_name, prop_len);
7158 }
7159 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
7160 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
7161 int i;
7162
7163 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
7164 dp->full_name);
7165 dev_err(np->device, PFX "%s: [ \n",
7166 dp->full_name);
7167 for (i = 0; i < 6; i++)
7168 printk("%02x ", dev->perm_addr[i]);
7169 printk("]\n");
7170 return -EINVAL;
7171 }
7172
7173 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7174
7175 return 0;
7176 #else
7177 return -EINVAL;
7178 #endif
7179 }
7180
7181 static int __devinit niu_get_invariants(struct niu *np)
7182 {
7183 int err, have_props;
7184 u32 offset;
7185
7186 err = niu_get_of_props(np);
7187 if (err == -ENODEV)
7188 return err;
7189
7190 have_props = !err;
7191
7192 err = niu_get_and_validate_port(np);
7193 if (err)
7194 return err;
7195
7196 err = niu_init_mac_ipp_pcs_base(np);
7197 if (err)
7198 return err;
7199
7200 if (!have_props) {
7201 if (np->parent->plat_type == PLAT_TYPE_NIU)
7202 return -EINVAL;
7203
7204 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
7205 offset = niu_pci_vpd_offset(np);
7206 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
7207 offset);
7208 if (offset)
7209 niu_pci_vpd_fetch(np, offset);
7210 nw64(ESPC_PIO_EN, 0);
7211
7212 if (np->flags & NIU_FLAGS_VPD_VALID)
7213 niu_pci_vpd_validate(np);
7214
7215 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
7216 err = niu_pci_probe_sprom(np);
7217 if (err)
7218 return err;
7219 }
7220 }
7221
7222 err = niu_probe_ports(np);
7223 if (err)
7224 return err;
7225
7226 niu_ldg_init(np);
7227
7228 niu_classifier_swstate_init(np);
7229 niu_link_config_init(np);
7230
7231 err = niu_determine_phy_disposition(np);
7232 if (!err)
7233 err = niu_init_link(np);
7234
7235 return err;
7236 }
7237
7238 static LIST_HEAD(niu_parent_list);
7239 static DEFINE_MUTEX(niu_parent_lock);
7240 static int niu_parent_index;
7241
7242 static ssize_t show_port_phy(struct device *dev,
7243 struct device_attribute *attr, char *buf)
7244 {
7245 struct platform_device *plat_dev = to_platform_device(dev);
7246 struct niu_parent *p = plat_dev->dev.platform_data;
7247 u32 port_phy = p->port_phy;
7248 char *orig_buf = buf;
7249 int i;
7250
7251 if (port_phy == PORT_PHY_UNKNOWN ||
7252 port_phy == PORT_PHY_INVALID)
7253 return 0;
7254
7255 for (i = 0; i < p->num_ports; i++) {
7256 const char *type_str;
7257 int type;
7258
7259 type = phy_decode(port_phy, i);
7260 if (type == PORT_TYPE_10G)
7261 type_str = "10G";
7262 else
7263 type_str = "1G";
7264 buf += sprintf(buf,
7265 (i == 0) ? "%s" : " %s",
7266 type_str);
7267 }
7268 buf += sprintf(buf, "\n");
7269 return buf - orig_buf;
7270 }
7271
7272 static ssize_t show_plat_type(struct device *dev,
7273 struct device_attribute *attr, char *buf)
7274 {
7275 struct platform_device *plat_dev = to_platform_device(dev);
7276 struct niu_parent *p = plat_dev->dev.platform_data;
7277 const char *type_str;
7278
7279 switch (p->plat_type) {
7280 case PLAT_TYPE_ATLAS:
7281 type_str = "atlas";
7282 break;
7283 case PLAT_TYPE_NIU:
7284 type_str = "niu";
7285 break;
7286 case PLAT_TYPE_VF_P0:
7287 type_str = "vf_p0";
7288 break;
7289 case PLAT_TYPE_VF_P1:
7290 type_str = "vf_p1";
7291 break;
7292 default:
7293 type_str = "unknown";
7294 break;
7295 }
7296
7297 return sprintf(buf, "%s\n", type_str);
7298 }
7299
7300 static ssize_t __show_chan_per_port(struct device *dev,
7301 struct device_attribute *attr, char *buf,
7302 int rx)
7303 {
7304 struct platform_device *plat_dev = to_platform_device(dev);
7305 struct niu_parent *p = plat_dev->dev.platform_data;
7306 char *orig_buf = buf;
7307 u8 *arr;
7308 int i;
7309
7310 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
7311
7312 for (i = 0; i < p->num_ports; i++) {
7313 buf += sprintf(buf,
7314 (i == 0) ? "%d" : " %d",
7315 arr[i]);
7316 }
7317 buf += sprintf(buf, "\n");
7318
7319 return buf - orig_buf;
7320 }
7321
7322 static ssize_t show_rxchan_per_port(struct device *dev,
7323 struct device_attribute *attr, char *buf)
7324 {
7325 return __show_chan_per_port(dev, attr, buf, 1);
7326 }
7327
7328 static ssize_t show_txchan_per_port(struct device *dev,
7329 struct device_attribute *attr, char *buf)
7330 {
7331 return __show_chan_per_port(dev, attr, buf, 1);
7332 }
7333
7334 static ssize_t show_num_ports(struct device *dev,
7335 struct device_attribute *attr, char *buf)
7336 {
7337 struct platform_device *plat_dev = to_platform_device(dev);
7338 struct niu_parent *p = plat_dev->dev.platform_data;
7339
7340 return sprintf(buf, "%d\n", p->num_ports);
7341 }
7342
7343 static struct device_attribute niu_parent_attributes[] = {
7344 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
7345 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
7346 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
7347 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
7348 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
7349 {}
7350 };
7351
7352 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
7353 union niu_parent_id *id,
7354 u8 ptype)
7355 {
7356 struct platform_device *plat_dev;
7357 struct niu_parent *p;
7358 int i;
7359
7360 niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
7361
7362 plat_dev = platform_device_register_simple("niu", niu_parent_index,
7363 NULL, 0);
7364 if (!plat_dev)
7365 return NULL;
7366
7367 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
7368 int err = device_create_file(&plat_dev->dev,
7369 &niu_parent_attributes[i]);
7370 if (err)
7371 goto fail_unregister;
7372 }
7373
7374 p = kzalloc(sizeof(*p), GFP_KERNEL);
7375 if (!p)
7376 goto fail_unregister;
7377
7378 p->index = niu_parent_index++;
7379
7380 plat_dev->dev.platform_data = p;
7381 p->plat_dev = plat_dev;
7382
7383 memcpy(&p->id, id, sizeof(*id));
7384 p->plat_type = ptype;
7385 INIT_LIST_HEAD(&p->list);
7386 atomic_set(&p->refcnt, 0);
7387 list_add(&p->list, &niu_parent_list);
7388 spin_lock_init(&p->lock);
7389
7390 p->rxdma_clock_divider = 7500;
7391
7392 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
7393 if (p->plat_type == PLAT_TYPE_NIU)
7394 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
7395
7396 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
7397 int index = i - CLASS_CODE_USER_PROG1;
7398
7399 p->tcam_key[index] = TCAM_KEY_TSEL;
7400 p->flow_key[index] = (FLOW_KEY_IPSA |
7401 FLOW_KEY_IPDA |
7402 FLOW_KEY_PROTO |
7403 (FLOW_KEY_L4_BYTE12 <<
7404 FLOW_KEY_L4_0_SHIFT) |
7405 (FLOW_KEY_L4_BYTE12 <<
7406 FLOW_KEY_L4_1_SHIFT));
7407 }
7408
7409 for (i = 0; i < LDN_MAX + 1; i++)
7410 p->ldg_map[i] = LDG_INVALID;
7411
7412 return p;
7413
7414 fail_unregister:
7415 platform_device_unregister(plat_dev);
7416 return NULL;
7417 }
7418
7419 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
7420 union niu_parent_id *id,
7421 u8 ptype)
7422 {
7423 struct niu_parent *p, *tmp;
7424 int port = np->port;
7425
7426 niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
7427 ptype, port);
7428
7429 mutex_lock(&niu_parent_lock);
7430 p = NULL;
7431 list_for_each_entry(tmp, &niu_parent_list, list) {
7432 if (!memcmp(id, &tmp->id, sizeof(*id))) {
7433 p = tmp;
7434 break;
7435 }
7436 }
7437 if (!p)
7438 p = niu_new_parent(np, id, ptype);
7439
7440 if (p) {
7441 char port_name[6];
7442 int err;
7443
7444 sprintf(port_name, "port%d", port);
7445 err = sysfs_create_link(&p->plat_dev->dev.kobj,
7446 &np->device->kobj,
7447 port_name);
7448 if (!err) {
7449 p->ports[port] = np;
7450 atomic_inc(&p->refcnt);
7451 }
7452 }
7453 mutex_unlock(&niu_parent_lock);
7454
7455 return p;
7456 }
7457
7458 static void niu_put_parent(struct niu *np)
7459 {
7460 struct niu_parent *p = np->parent;
7461 u8 port = np->port;
7462 char port_name[6];
7463
7464 BUG_ON(!p || p->ports[port] != np);
7465
7466 niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
7467
7468 sprintf(port_name, "port%d", port);
7469
7470 mutex_lock(&niu_parent_lock);
7471
7472 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
7473
7474 p->ports[port] = NULL;
7475 np->parent = NULL;
7476
7477 if (atomic_dec_and_test(&p->refcnt)) {
7478 list_del(&p->list);
7479 platform_device_unregister(p->plat_dev);
7480 }
7481
7482 mutex_unlock(&niu_parent_lock);
7483 }
7484
7485 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
7486 u64 *handle, gfp_t flag)
7487 {
7488 dma_addr_t dh;
7489 void *ret;
7490
7491 ret = dma_alloc_coherent(dev, size, &dh, flag);
7492 if (ret)
7493 *handle = dh;
7494 return ret;
7495 }
7496
7497 static void niu_pci_free_coherent(struct device *dev, size_t size,
7498 void *cpu_addr, u64 handle)
7499 {
7500 dma_free_coherent(dev, size, cpu_addr, handle);
7501 }
7502
7503 static u64 niu_pci_map_page(struct device *dev, struct page *page,
7504 unsigned long offset, size_t size,
7505 enum dma_data_direction direction)
7506 {
7507 return dma_map_page(dev, page, offset, size, direction);
7508 }
7509
7510 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
7511 size_t size, enum dma_data_direction direction)
7512 {
7513 return dma_unmap_page(dev, dma_address, size, direction);
7514 }
7515
7516 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
7517 size_t size,
7518 enum dma_data_direction direction)
7519 {
7520 return dma_map_single(dev, cpu_addr, size, direction);
7521 }
7522
7523 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
7524 size_t size,
7525 enum dma_data_direction direction)
7526 {
7527 dma_unmap_single(dev, dma_address, size, direction);
7528 }
7529
7530 static const struct niu_ops niu_pci_ops = {
7531 .alloc_coherent = niu_pci_alloc_coherent,
7532 .free_coherent = niu_pci_free_coherent,
7533 .map_page = niu_pci_map_page,
7534 .unmap_page = niu_pci_unmap_page,
7535 .map_single = niu_pci_map_single,
7536 .unmap_single = niu_pci_unmap_single,
7537 };
7538
7539 static void __devinit niu_driver_version(void)
7540 {
7541 static int niu_version_printed;
7542
7543 if (niu_version_printed++ == 0)
7544 pr_info("%s", version);
7545 }
7546
7547 static struct net_device * __devinit niu_alloc_and_init(
7548 struct device *gen_dev, struct pci_dev *pdev,
7549 struct of_device *op, const struct niu_ops *ops,
7550 u8 port)
7551 {
7552 struct net_device *dev = alloc_etherdev(sizeof(struct niu));
7553 struct niu *np;
7554
7555 if (!dev) {
7556 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
7557 return NULL;
7558 }
7559
7560 SET_NETDEV_DEV(dev, gen_dev);
7561
7562 np = netdev_priv(dev);
7563 np->dev = dev;
7564 np->pdev = pdev;
7565 np->op = op;
7566 np->device = gen_dev;
7567 np->ops = ops;
7568
7569 np->msg_enable = niu_debug;
7570
7571 spin_lock_init(&np->lock);
7572 INIT_WORK(&np->reset_task, niu_reset_task);
7573
7574 np->port = port;
7575
7576 return dev;
7577 }
7578
7579 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
7580 {
7581 dev->open = niu_open;
7582 dev->stop = niu_close;
7583 dev->get_stats = niu_get_stats;
7584 dev->set_multicast_list = niu_set_rx_mode;
7585 dev->set_mac_address = niu_set_mac_addr;
7586 dev->do_ioctl = niu_ioctl;
7587 dev->tx_timeout = niu_tx_timeout;
7588 dev->hard_start_xmit = niu_start_xmit;
7589 dev->ethtool_ops = &niu_ethtool_ops;
7590 dev->watchdog_timeo = NIU_TX_TIMEOUT;
7591 dev->change_mtu = niu_change_mtu;
7592 }
7593
7594 static void __devinit niu_device_announce(struct niu *np)
7595 {
7596 struct net_device *dev = np->dev;
7597 DECLARE_MAC_BUF(mac);
7598
7599 pr_info("%s: NIU Ethernet %s\n",
7600 dev->name, print_mac(mac, dev->dev_addr));
7601
7602 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
7603 dev->name,
7604 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
7605 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
7606 (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
7607 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
7608 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
7609 np->vpd.phy_type);
7610 }
7611
7612 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
7613 const struct pci_device_id *ent)
7614 {
7615 unsigned long niureg_base, niureg_len;
7616 union niu_parent_id parent_id;
7617 struct net_device *dev;
7618 struct niu *np;
7619 int err, pos;
7620 u64 dma_mask;
7621 u16 val16;
7622
7623 niu_driver_version();
7624
7625 err = pci_enable_device(pdev);
7626 if (err) {
7627 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
7628 "aborting.\n");
7629 return err;
7630 }
7631
7632 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
7633 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
7634 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
7635 "base addresses, aborting.\n");
7636 err = -ENODEV;
7637 goto err_out_disable_pdev;
7638 }
7639
7640 err = pci_request_regions(pdev, DRV_MODULE_NAME);
7641 if (err) {
7642 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
7643 "aborting.\n");
7644 goto err_out_disable_pdev;
7645 }
7646
7647 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
7648 if (pos <= 0) {
7649 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
7650 "aborting.\n");
7651 goto err_out_free_res;
7652 }
7653
7654 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
7655 &niu_pci_ops, PCI_FUNC(pdev->devfn));
7656 if (!dev) {
7657 err = -ENOMEM;
7658 goto err_out_free_res;
7659 }
7660 np = netdev_priv(dev);
7661
7662 memset(&parent_id, 0, sizeof(parent_id));
7663 parent_id.pci.domain = pci_domain_nr(pdev->bus);
7664 parent_id.pci.bus = pdev->bus->number;
7665 parent_id.pci.device = PCI_SLOT(pdev->devfn);
7666
7667 np->parent = niu_get_parent(np, &parent_id,
7668 PLAT_TYPE_ATLAS);
7669 if (!np->parent) {
7670 err = -ENOMEM;
7671 goto err_out_free_dev;
7672 }
7673
7674 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
7675 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
7676 val16 |= (PCI_EXP_DEVCTL_CERE |
7677 PCI_EXP_DEVCTL_NFERE |
7678 PCI_EXP_DEVCTL_FERE |
7679 PCI_EXP_DEVCTL_URRE |
7680 PCI_EXP_DEVCTL_RELAX_EN);
7681 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
7682
7683 dma_mask = DMA_44BIT_MASK;
7684 err = pci_set_dma_mask(pdev, dma_mask);
7685 if (!err) {
7686 dev->features |= NETIF_F_HIGHDMA;
7687 err = pci_set_consistent_dma_mask(pdev, dma_mask);
7688 if (err) {
7689 dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
7690 "DMA for consistent allocations, "
7691 "aborting.\n");
7692 goto err_out_release_parent;
7693 }
7694 }
7695 if (err || dma_mask == DMA_32BIT_MASK) {
7696 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7697 if (err) {
7698 dev_err(&pdev->dev, PFX "No usable DMA configuration, "
7699 "aborting.\n");
7700 goto err_out_release_parent;
7701 }
7702 }
7703
7704 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7705
7706 niureg_base = pci_resource_start(pdev, 0);
7707 niureg_len = pci_resource_len(pdev, 0);
7708
7709 np->regs = ioremap_nocache(niureg_base, niureg_len);
7710 if (!np->regs) {
7711 dev_err(&pdev->dev, PFX "Cannot map device registers, "
7712 "aborting.\n");
7713 err = -ENOMEM;
7714 goto err_out_release_parent;
7715 }
7716
7717 pci_set_master(pdev);
7718 pci_save_state(pdev);
7719
7720 dev->irq = pdev->irq;
7721
7722 niu_assign_netdev_ops(dev);
7723
7724 err = niu_get_invariants(np);
7725 if (err) {
7726 if (err != -ENODEV)
7727 dev_err(&pdev->dev, PFX "Problem fetching invariants "
7728 "of chip, aborting.\n");
7729 goto err_out_iounmap;
7730 }
7731
7732 err = register_netdev(dev);
7733 if (err) {
7734 dev_err(&pdev->dev, PFX "Cannot register net device, "
7735 "aborting.\n");
7736 goto err_out_iounmap;
7737 }
7738
7739 pci_set_drvdata(pdev, dev);
7740
7741 niu_device_announce(np);
7742
7743 return 0;
7744
7745 err_out_iounmap:
7746 if (np->regs) {
7747 iounmap(np->regs);
7748 np->regs = NULL;
7749 }
7750
7751 err_out_release_parent:
7752 niu_put_parent(np);
7753
7754 err_out_free_dev:
7755 free_netdev(dev);
7756
7757 err_out_free_res:
7758 pci_release_regions(pdev);
7759
7760 err_out_disable_pdev:
7761 pci_disable_device(pdev);
7762 pci_set_drvdata(pdev, NULL);
7763
7764 return err;
7765 }
7766
7767 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
7768 {
7769 struct net_device *dev = pci_get_drvdata(pdev);
7770
7771 if (dev) {
7772 struct niu *np = netdev_priv(dev);
7773
7774 unregister_netdev(dev);
7775 if (np->regs) {
7776 iounmap(np->regs);
7777 np->regs = NULL;
7778 }
7779
7780 niu_ldg_free(np);
7781
7782 niu_put_parent(np);
7783
7784 free_netdev(dev);
7785 pci_release_regions(pdev);
7786 pci_disable_device(pdev);
7787 pci_set_drvdata(pdev, NULL);
7788 }
7789 }
7790
7791 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
7792 {
7793 struct net_device *dev = pci_get_drvdata(pdev);
7794 struct niu *np = netdev_priv(dev);
7795 unsigned long flags;
7796
7797 if (!netif_running(dev))
7798 return 0;
7799
7800 flush_scheduled_work();
7801 niu_netif_stop(np);
7802
7803 del_timer_sync(&np->timer);
7804
7805 spin_lock_irqsave(&np->lock, flags);
7806 niu_enable_interrupts(np, 0);
7807 spin_unlock_irqrestore(&np->lock, flags);
7808
7809 netif_device_detach(dev);
7810
7811 spin_lock_irqsave(&np->lock, flags);
7812 niu_stop_hw(np);
7813 spin_unlock_irqrestore(&np->lock, flags);
7814
7815 pci_save_state(pdev);
7816
7817 return 0;
7818 }
7819
7820 static int niu_resume(struct pci_dev *pdev)
7821 {
7822 struct net_device *dev = pci_get_drvdata(pdev);
7823 struct niu *np = netdev_priv(dev);
7824 unsigned long flags;
7825 int err;
7826
7827 if (!netif_running(dev))
7828 return 0;
7829
7830 pci_restore_state(pdev);
7831
7832 netif_device_attach(dev);
7833
7834 spin_lock_irqsave(&np->lock, flags);
7835
7836 err = niu_init_hw(np);
7837 if (!err) {
7838 np->timer.expires = jiffies + HZ;
7839 add_timer(&np->timer);
7840 niu_netif_start(np);
7841 }
7842
7843 spin_unlock_irqrestore(&np->lock, flags);
7844
7845 return err;
7846 }
7847
7848 static struct pci_driver niu_pci_driver = {
7849 .name = DRV_MODULE_NAME,
7850 .id_table = niu_pci_tbl,
7851 .probe = niu_pci_init_one,
7852 .remove = __devexit_p(niu_pci_remove_one),
7853 .suspend = niu_suspend,
7854 .resume = niu_resume,
7855 };
7856
7857 #ifdef CONFIG_SPARC64
7858 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
7859 u64 *dma_addr, gfp_t flag)
7860 {
7861 unsigned long order = get_order(size);
7862 unsigned long page = __get_free_pages(flag, order);
7863
7864 if (page == 0UL)
7865 return NULL;
7866 memset((char *)page, 0, PAGE_SIZE << order);
7867 *dma_addr = __pa(page);
7868
7869 return (void *) page;
7870 }
7871
7872 static void niu_phys_free_coherent(struct device *dev, size_t size,
7873 void *cpu_addr, u64 handle)
7874 {
7875 unsigned long order = get_order(size);
7876
7877 free_pages((unsigned long) cpu_addr, order);
7878 }
7879
7880 static u64 niu_phys_map_page(struct device *dev, struct page *page,
7881 unsigned long offset, size_t size,
7882 enum dma_data_direction direction)
7883 {
7884 return page_to_phys(page) + offset;
7885 }
7886
7887 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
7888 size_t size, enum dma_data_direction direction)
7889 {
7890 /* Nothing to do. */
7891 }
7892
7893 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
7894 size_t size,
7895 enum dma_data_direction direction)
7896 {
7897 return __pa(cpu_addr);
7898 }
7899
7900 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
7901 size_t size,
7902 enum dma_data_direction direction)
7903 {
7904 /* Nothing to do. */
7905 }
7906
7907 static const struct niu_ops niu_phys_ops = {
7908 .alloc_coherent = niu_phys_alloc_coherent,
7909 .free_coherent = niu_phys_free_coherent,
7910 .map_page = niu_phys_map_page,
7911 .unmap_page = niu_phys_unmap_page,
7912 .map_single = niu_phys_map_single,
7913 .unmap_single = niu_phys_unmap_single,
7914 };
7915
7916 static unsigned long res_size(struct resource *r)
7917 {
7918 return r->end - r->start + 1UL;
7919 }
7920
7921 static int __devinit niu_of_probe(struct of_device *op,
7922 const struct of_device_id *match)
7923 {
7924 union niu_parent_id parent_id;
7925 struct net_device *dev;
7926 struct niu *np;
7927 const u32 *reg;
7928 int err;
7929
7930 niu_driver_version();
7931
7932 reg = of_get_property(op->node, "reg", NULL);
7933 if (!reg) {
7934 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
7935 op->node->full_name);
7936 return -ENODEV;
7937 }
7938
7939 dev = niu_alloc_and_init(&op->dev, NULL, op,
7940 &niu_phys_ops, reg[0] & 0x1);
7941 if (!dev) {
7942 err = -ENOMEM;
7943 goto err_out;
7944 }
7945 np = netdev_priv(dev);
7946
7947 memset(&parent_id, 0, sizeof(parent_id));
7948 parent_id.of = of_get_parent(op->node);
7949
7950 np->parent = niu_get_parent(np, &parent_id,
7951 PLAT_TYPE_NIU);
7952 if (!np->parent) {
7953 err = -ENOMEM;
7954 goto err_out_free_dev;
7955 }
7956
7957 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7958
7959 np->regs = of_ioremap(&op->resource[1], 0,
7960 res_size(&op->resource[1]),
7961 "niu regs");
7962 if (!np->regs) {
7963 dev_err(&op->dev, PFX "Cannot map device registers, "
7964 "aborting.\n");
7965 err = -ENOMEM;
7966 goto err_out_release_parent;
7967 }
7968
7969 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
7970 res_size(&op->resource[2]),
7971 "niu vregs-1");
7972 if (!np->vir_regs_1) {
7973 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
7974 "aborting.\n");
7975 err = -ENOMEM;
7976 goto err_out_iounmap;
7977 }
7978
7979 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
7980 res_size(&op->resource[3]),
7981 "niu vregs-2");
7982 if (!np->vir_regs_2) {
7983 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
7984 "aborting.\n");
7985 err = -ENOMEM;
7986 goto err_out_iounmap;
7987 }
7988
7989 niu_assign_netdev_ops(dev);
7990
7991 err = niu_get_invariants(np);
7992 if (err) {
7993 if (err != -ENODEV)
7994 dev_err(&op->dev, PFX "Problem fetching invariants "
7995 "of chip, aborting.\n");
7996 goto err_out_iounmap;
7997 }
7998
7999 err = register_netdev(dev);
8000 if (err) {
8001 dev_err(&op->dev, PFX "Cannot register net device, "
8002 "aborting.\n");
8003 goto err_out_iounmap;
8004 }
8005
8006 dev_set_drvdata(&op->dev, dev);
8007
8008 niu_device_announce(np);
8009
8010 return 0;
8011
8012 err_out_iounmap:
8013 if (np->vir_regs_1) {
8014 of_iounmap(&op->resource[2], np->vir_regs_1,
8015 res_size(&op->resource[2]));
8016 np->vir_regs_1 = NULL;
8017 }
8018
8019 if (np->vir_regs_2) {
8020 of_iounmap(&op->resource[3], np->vir_regs_2,
8021 res_size(&op->resource[3]));
8022 np->vir_regs_2 = NULL;
8023 }
8024
8025 if (np->regs) {
8026 of_iounmap(&op->resource[1], np->regs,
8027 res_size(&op->resource[1]));
8028 np->regs = NULL;
8029 }
8030
8031 err_out_release_parent:
8032 niu_put_parent(np);
8033
8034 err_out_free_dev:
8035 free_netdev(dev);
8036
8037 err_out:
8038 return err;
8039 }
8040
8041 static int __devexit niu_of_remove(struct of_device *op)
8042 {
8043 struct net_device *dev = dev_get_drvdata(&op->dev);
8044
8045 if (dev) {
8046 struct niu *np = netdev_priv(dev);
8047
8048 unregister_netdev(dev);
8049
8050 if (np->vir_regs_1) {
8051 of_iounmap(&op->resource[2], np->vir_regs_1,
8052 res_size(&op->resource[2]));
8053 np->vir_regs_1 = NULL;
8054 }
8055
8056 if (np->vir_regs_2) {
8057 of_iounmap(&op->resource[3], np->vir_regs_2,
8058 res_size(&op->resource[3]));
8059 np->vir_regs_2 = NULL;
8060 }
8061
8062 if (np->regs) {
8063 of_iounmap(&op->resource[1], np->regs,
8064 res_size(&op->resource[1]));
8065 np->regs = NULL;
8066 }
8067
8068 niu_ldg_free(np);
8069
8070 niu_put_parent(np);
8071
8072 free_netdev(dev);
8073 dev_set_drvdata(&op->dev, NULL);
8074 }
8075 return 0;
8076 }
8077
8078 static struct of_device_id niu_match[] = {
8079 {
8080 .name = "network",
8081 .compatible = "SUNW,niusl",
8082 },
8083 {},
8084 };
8085 MODULE_DEVICE_TABLE(of, niu_match);
8086
8087 static struct of_platform_driver niu_of_driver = {
8088 .name = "niu",
8089 .match_table = niu_match,
8090 .probe = niu_of_probe,
8091 .remove = __devexit_p(niu_of_remove),
8092 };
8093
8094 #endif /* CONFIG_SPARC64 */
8095
8096 static int __init niu_init(void)
8097 {
8098 int err = 0;
8099
8100 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
8101
8102 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
8103
8104 #ifdef CONFIG_SPARC64
8105 err = of_register_driver(&niu_of_driver, &of_bus_type);
8106 #endif
8107
8108 if (!err) {
8109 err = pci_register_driver(&niu_pci_driver);
8110 #ifdef CONFIG_SPARC64
8111 if (err)
8112 of_unregister_driver(&niu_of_driver);
8113 #endif
8114 }
8115
8116 return err;
8117 }
8118
8119 static void __exit niu_exit(void)
8120 {
8121 pci_unregister_driver(&niu_pci_driver);
8122 #ifdef CONFIG_SPARC64
8123 of_unregister_driver(&niu_of_driver);
8124 #endif
8125 }
8126
8127 module_init(niu_init);
8128 module_exit(niu_exit);
linux-next