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[NIU]: Fix slowpath interrupt handling.
[linux-2.6/sactl.git] / drivers / net / niu.c
blob32ed87d54706eca81644ff2a014453a67c77a135
1 /* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4 */
5
6 #include <linux/module.h>
7 #include <linux/init.h>
8 #include <linux/pci.h>
9 #include <linux/dma-mapping.h>
10 #include <linux/netdevice.h>
11 #include <linux/ethtool.h>
12 #include <linux/etherdevice.h>
13 #include <linux/platform_device.h>
14 #include <linux/delay.h>
15 #include <linux/bitops.h>
16 #include <linux/mii.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ip.h>
20 #include <linux/in.h>
21 #include <linux/ipv6.h>
22 #include <linux/log2.h>
23 #include <linux/jiffies.h>
24 #include <linux/crc32.h>
25
26 #include <linux/io.h>
27
28 #ifdef CONFIG_SPARC64
29 #include <linux/of_device.h>
30 #endif
31
32 #include "niu.h"
33
34 #define DRV_MODULE_NAME "niu"
35 #define PFX DRV_MODULE_NAME ": "
36 #define DRV_MODULE_VERSION "0.5"
37 #define DRV_MODULE_RELDATE "October 5, 2007"
38
39 static char version[] __devinitdata =
40 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
41
42 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
43 MODULE_DESCRIPTION("NIU ethernet driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(DRV_MODULE_VERSION);
46
47 #ifndef DMA_44BIT_MASK
48 #define DMA_44BIT_MASK 0x00000fffffffffffULL
49 #endif
50
51 #ifndef readq
52 static u64 readq(void __iomem *reg)
53 {
54 return (((u64)readl(reg + 0x4UL) << 32) |
55 (u64)readl(reg));
56 }
57
58 static void writeq(u64 val, void __iomem *reg)
59 {
60 writel(val & 0xffffffff, reg);
61 writel(val >> 32, reg + 0x4UL);
62 }
63 #endif
64
65 static struct pci_device_id niu_pci_tbl[] = {
66 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
67 {}
68 };
69
70 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
71
72 #define NIU_TX_TIMEOUT (5 * HZ)
73
74 #define nr64(reg) readq(np->regs + (reg))
75 #define nw64(reg, val) writeq((val), np->regs + (reg))
76
77 #define nr64_mac(reg) readq(np->mac_regs + (reg))
78 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
79
80 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
81 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
82
83 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
84 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
85
86 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
87 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
88
89 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
90
91 static int niu_debug;
92 static int debug = -1;
93 module_param(debug, int, 0);
94 MODULE_PARM_DESC(debug, "NIU debug level");
95
96 #define niudbg(TYPE, f, a...) \
97 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
98 printk(KERN_DEBUG PFX f, ## a); \
99 } while (0)
100
101 #define niuinfo(TYPE, f, a...) \
102 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
103 printk(KERN_INFO PFX f, ## a); \
104 } while (0)
105
106 #define niuwarn(TYPE, f, a...) \
107 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
108 printk(KERN_WARNING PFX f, ## a); \
109 } while (0)
110
111 #define niu_lock_parent(np, flags) \
112 spin_lock_irqsave(&np->parent->lock, flags)
113 #define niu_unlock_parent(np, flags) \
114 spin_unlock_irqrestore(&np->parent->lock, flags)
115
116 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
117 u64 bits, int limit, int delay)
118 {
119 while (--limit >= 0) {
120 u64 val = nr64_mac(reg);
121
122 if (!(val & bits))
123 break;
124 udelay(delay);
125 }
126 if (limit < 0)
127 return -ENODEV;
128 return 0;
129 }
130
131 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
132 u64 bits, int limit, int delay,
133 const char *reg_name)
134 {
135 int err;
136
137 nw64_mac(reg, bits);
138 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
139 if (err)
140 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
141 "would not clear, val[%llx]\n",
142 np->dev->name, (unsigned long long) bits, reg_name,
143 (unsigned long long) nr64_mac(reg));
144 return err;
145 }
146
147 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
148 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
149 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
150 })
151
152 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
153 u64 bits, int limit, int delay)
154 {
155 while (--limit >= 0) {
156 u64 val = nr64_ipp(reg);
157
158 if (!(val & bits))
159 break;
160 udelay(delay);
161 }
162 if (limit < 0)
163 return -ENODEV;
164 return 0;
165 }
166
167 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
168 u64 bits, int limit, int delay,
169 const char *reg_name)
170 {
171 int err;
172 u64 val;
173
174 val = nr64_ipp(reg);
175 val |= bits;
176 nw64_ipp(reg, val);
177
178 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
179 if (err)
180 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
181 "would not clear, val[%llx]\n",
182 np->dev->name, (unsigned long long) bits, reg_name,
183 (unsigned long long) nr64_ipp(reg));
184 return err;
185 }
186
187 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
188 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
189 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
190 })
191
192 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
193 u64 bits, int limit, int delay)
194 {
195 while (--limit >= 0) {
196 u64 val = nr64(reg);
197
198 if (!(val & bits))
199 break;
200 udelay(delay);
201 }
202 if (limit < 0)
203 return -ENODEV;
204 return 0;
205 }
206
207 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
208 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
209 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
210 })
211
212 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
213 u64 bits, int limit, int delay,
214 const char *reg_name)
215 {
216 int err;
217
218 nw64(reg, bits);
219 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
220 if (err)
221 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
222 "would not clear, val[%llx]\n",
223 np->dev->name, (unsigned long long) bits, reg_name,
224 (unsigned long long) nr64(reg));
225 return err;
226 }
227
228 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
229 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
230 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
231 })
232
233 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
234 {
235 u64 val = (u64) lp->timer;
236
237 if (on)
238 val |= LDG_IMGMT_ARM;
239
240 nw64(LDG_IMGMT(lp->ldg_num), val);
241 }
242
243 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
244 {
245 unsigned long mask_reg, bits;
246 u64 val;
247
248 if (ldn < 0 || ldn > LDN_MAX)
249 return -EINVAL;
250
251 if (ldn < 64) {
252 mask_reg = LD_IM0(ldn);
253 bits = LD_IM0_MASK;
254 } else {
255 mask_reg = LD_IM1(ldn - 64);
256 bits = LD_IM1_MASK;
257 }
258
259 val = nr64(mask_reg);
260 if (on)
261 val &= ~bits;
262 else
263 val |= bits;
264 nw64(mask_reg, val);
265
266 return 0;
267 }
268
269 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
270 {
271 struct niu_parent *parent = np->parent;
272 int i;
273
274 for (i = 0; i <= LDN_MAX; i++) {
275 int err;
276
277 if (parent->ldg_map[i] != lp->ldg_num)
278 continue;
279
280 err = niu_ldn_irq_enable(np, i, on);
281 if (err)
282 return err;
283 }
284 return 0;
285 }
286
287 static int niu_enable_interrupts(struct niu *np, int on)
288 {
289 int i;
290
291 for (i = 0; i < np->num_ldg; i++) {
292 struct niu_ldg *lp = &np->ldg[i];
293 int err;
294
295 err = niu_enable_ldn_in_ldg(np, lp, on);
296 if (err)
297 return err;
298 }
299 for (i = 0; i < np->num_ldg; i++)
300 niu_ldg_rearm(np, &np->ldg[i], on);
301
302 return 0;
303 }
304
305 static u32 phy_encode(u32 type, int port)
306 {
307 return (type << (port * 2));
308 }
309
310 static u32 phy_decode(u32 val, int port)
311 {
312 return (val >> (port * 2)) & PORT_TYPE_MASK;
313 }
314
315 static int mdio_wait(struct niu *np)
316 {
317 int limit = 1000;
318 u64 val;
319
320 while (--limit > 0) {
321 val = nr64(MIF_FRAME_OUTPUT);
322 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
323 return val & MIF_FRAME_OUTPUT_DATA;
324
325 udelay(10);
326 }
327
328 return -ENODEV;
329 }
330
331 static int mdio_read(struct niu *np, int port, int dev, int reg)
332 {
333 int err;
334
335 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
336 err = mdio_wait(np);
337 if (err < 0)
338 return err;
339
340 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
341 return mdio_wait(np);
342 }
343
344 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
345 {
346 int err;
347
348 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
349 err = mdio_wait(np);
350 if (err < 0)
351 return err;
352
353 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
354 err = mdio_wait(np);
355 if (err < 0)
356 return err;
357
358 return 0;
359 }
360
361 static int mii_read(struct niu *np, int port, int reg)
362 {
363 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
364 return mdio_wait(np);
365 }
366
367 static int mii_write(struct niu *np, int port, int reg, int data)
368 {
369 int err;
370
371 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
372 err = mdio_wait(np);
373 if (err < 0)
374 return err;
375
376 return 0;
377 }
378
379 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
380 {
381 int err;
382
383 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
384 ESR2_TI_PLL_TX_CFG_L(channel),
385 val & 0xffff);
386 if (!err)
387 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
388 ESR2_TI_PLL_TX_CFG_H(channel),
389 val >> 16);
390 return err;
391 }
392
393 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
394 {
395 int err;
396
397 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
398 ESR2_TI_PLL_RX_CFG_L(channel),
399 val & 0xffff);
400 if (!err)
401 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
402 ESR2_TI_PLL_RX_CFG_H(channel),
403 val >> 16);
404 return err;
405 }
406
407 /* Mode is always 10G fiber. */
408 static int serdes_init_niu(struct niu *np)
409 {
410 struct niu_link_config *lp = &np->link_config;
411 u32 tx_cfg, rx_cfg;
412 unsigned long i;
413
414 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
415 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
416 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
417 PLL_RX_CFG_EQ_LP_ADAPTIVE);
418
419 if (lp->loopback_mode == LOOPBACK_PHY) {
420 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
421
422 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
423 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
424
425 tx_cfg |= PLL_TX_CFG_ENTEST;
426 rx_cfg |= PLL_RX_CFG_ENTEST;
427 }
428
429 /* Initialize all 4 lanes of the SERDES. */
430 for (i = 0; i < 4; i++) {
431 int err = esr2_set_tx_cfg(np, i, tx_cfg);
432 if (err)
433 return err;
434 }
435
436 for (i = 0; i < 4; i++) {
437 int err = esr2_set_rx_cfg(np, i, rx_cfg);
438 if (err)
439 return err;
440 }
441
442 return 0;
443 }
444
445 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
446 {
447 int err;
448
449 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
450 if (err >= 0) {
451 *val = (err & 0xffff);
452 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
453 ESR_RXTX_CTRL_H(chan));
454 if (err >= 0)
455 *val |= ((err & 0xffff) << 16);
456 err = 0;
457 }
458 return err;
459 }
460
461 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
462 {
463 int err;
464
465 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
466 ESR_GLUE_CTRL0_L(chan));
467 if (err >= 0) {
468 *val = (err & 0xffff);
469 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
470 ESR_GLUE_CTRL0_H(chan));
471 if (err >= 0) {
472 *val |= ((err & 0xffff) << 16);
473 err = 0;
474 }
475 }
476 return err;
477 }
478
479 static int esr_read_reset(struct niu *np, u32 *val)
480 {
481 int err;
482
483 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
484 ESR_RXTX_RESET_CTRL_L);
485 if (err >= 0) {
486 *val = (err & 0xffff);
487 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
488 ESR_RXTX_RESET_CTRL_H);
489 if (err >= 0) {
490 *val |= ((err & 0xffff) << 16);
491 err = 0;
492 }
493 }
494 return err;
495 }
496
497 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
498 {
499 int err;
500
501 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
502 ESR_RXTX_CTRL_L(chan), val & 0xffff);
503 if (!err)
504 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
505 ESR_RXTX_CTRL_H(chan), (val >> 16));
506 return err;
507 }
508
509 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
510 {
511 int err;
512
513 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
514 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
515 if (!err)
516 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
517 ESR_GLUE_CTRL0_H(chan), (val >> 16));
518 return err;
519 }
520
521 static int esr_reset(struct niu *np)
522 {
523 u32 reset;
524 int err;
525
526 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
527 ESR_RXTX_RESET_CTRL_L, 0x0000);
528 if (err)
529 return err;
530 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
531 ESR_RXTX_RESET_CTRL_H, 0xffff);
532 if (err)
533 return err;
534 udelay(200);
535
536 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
537 ESR_RXTX_RESET_CTRL_L, 0xffff);
538 if (err)
539 return err;
540 udelay(200);
541
542 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
543 ESR_RXTX_RESET_CTRL_H, 0x0000);
544 if (err)
545 return err;
546 udelay(200);
547
548 err = esr_read_reset(np, &reset);
549 if (err)
550 return err;
551 if (reset != 0) {
552 dev_err(np->device, PFX "Port %u ESR_RESET "
553 "did not clear [%08x]\n",
554 np->port, reset);
555 return -ENODEV;
556 }
557
558 return 0;
559 }
560
561 static int serdes_init_10g(struct niu *np)
562 {
563 struct niu_link_config *lp = &np->link_config;
564 unsigned long ctrl_reg, test_cfg_reg, i;
565 u64 ctrl_val, test_cfg_val, sig, mask, val;
566 int err;
567
568 switch (np->port) {
569 case 0:
570 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
571 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
572 break;
573 case 1:
574 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
575 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
576 break;
577
578 default:
579 return -EINVAL;
580 }
581 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
582 ENET_SERDES_CTRL_SDET_1 |
583 ENET_SERDES_CTRL_SDET_2 |
584 ENET_SERDES_CTRL_SDET_3 |
585 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
586 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
587 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
588 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
589 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
590 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
591 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
592 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
593 test_cfg_val = 0;
594
595 if (lp->loopback_mode == LOOPBACK_PHY) {
596 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
597 ENET_SERDES_TEST_MD_0_SHIFT) |
598 (ENET_TEST_MD_PAD_LOOPBACK <<
599 ENET_SERDES_TEST_MD_1_SHIFT) |
600 (ENET_TEST_MD_PAD_LOOPBACK <<
601 ENET_SERDES_TEST_MD_2_SHIFT) |
602 (ENET_TEST_MD_PAD_LOOPBACK <<
603 ENET_SERDES_TEST_MD_3_SHIFT));
604 }
605
606 nw64(ctrl_reg, ctrl_val);
607 nw64(test_cfg_reg, test_cfg_val);
608
609 /* Initialize all 4 lanes of the SERDES. */
610 for (i = 0; i < 4; i++) {
611 u32 rxtx_ctrl, glue0;
612
613 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
614 if (err)
615 return err;
616 err = esr_read_glue0(np, i, &glue0);
617 if (err)
618 return err;
619
620 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
621 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
622 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
623
624 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
625 ESR_GLUE_CTRL0_THCNT |
626 ESR_GLUE_CTRL0_BLTIME);
627 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
628 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
629 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
630 (BLTIME_300_CYCLES <<
631 ESR_GLUE_CTRL0_BLTIME_SHIFT));
632
633 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
634 if (err)
635 return err;
636 err = esr_write_glue0(np, i, glue0);
637 if (err)
638 return err;
639 }
640
641 err = esr_reset(np);
642 if (err)
643 return err;
644
645 sig = nr64(ESR_INT_SIGNALS);
646 switch (np->port) {
647 case 0:
648 mask = ESR_INT_SIGNALS_P0_BITS;
649 val = (ESR_INT_SRDY0_P0 |
650 ESR_INT_DET0_P0 |
651 ESR_INT_XSRDY_P0 |
652 ESR_INT_XDP_P0_CH3 |
653 ESR_INT_XDP_P0_CH2 |
654 ESR_INT_XDP_P0_CH1 |
655 ESR_INT_XDP_P0_CH0);
656 break;
657
658 case 1:
659 mask = ESR_INT_SIGNALS_P1_BITS;
660 val = (ESR_INT_SRDY0_P1 |
661 ESR_INT_DET0_P1 |
662 ESR_INT_XSRDY_P1 |
663 ESR_INT_XDP_P1_CH3 |
664 ESR_INT_XDP_P1_CH2 |
665 ESR_INT_XDP_P1_CH1 |
666 ESR_INT_XDP_P1_CH0);
667 break;
668
669 default:
670 return -EINVAL;
671 }
672
673 if ((sig & mask) != val) {
674 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
675 "[%08x]\n", np->port, (int) (sig & mask), (int) val);
676 return -ENODEV;
677 }
678
679 return 0;
680 }
681
682 static int serdes_init_1g(struct niu *np)
683 {
684 u64 val;
685
686 val = nr64(ENET_SERDES_1_PLL_CFG);
687 val &= ~ENET_SERDES_PLL_FBDIV2;
688 switch (np->port) {
689 case 0:
690 val |= ENET_SERDES_PLL_HRATE0;
691 break;
692 case 1:
693 val |= ENET_SERDES_PLL_HRATE1;
694 break;
695 case 2:
696 val |= ENET_SERDES_PLL_HRATE2;
697 break;
698 case 3:
699 val |= ENET_SERDES_PLL_HRATE3;
700 break;
701 default:
702 return -EINVAL;
703 }
704 nw64(ENET_SERDES_1_PLL_CFG, val);
705
706 return 0;
707 }
708
709 static int bcm8704_reset(struct niu *np)
710 {
711 int err, limit;
712
713 err = mdio_read(np, np->phy_addr,
714 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
715 if (err < 0)
716 return err;
717 err |= BMCR_RESET;
718 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
719 MII_BMCR, err);
720 if (err)
721 return err;
722
723 limit = 1000;
724 while (--limit >= 0) {
725 err = mdio_read(np, np->phy_addr,
726 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
727 if (err < 0)
728 return err;
729 if (!(err & BMCR_RESET))
730 break;
731 }
732 if (limit < 0) {
733 dev_err(np->device, PFX "Port %u PHY will not reset "
734 "(bmcr=%04x)\n", np->port, (err & 0xffff));
735 return -ENODEV;
736 }
737 return 0;
738 }
739
740 /* When written, certain PHY registers need to be read back twice
741 * in order for the bits to settle properly.
742 */
743 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
744 {
745 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
746 if (err < 0)
747 return err;
748 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
749 if (err < 0)
750 return err;
751 return 0;
752 }
753
754 static int bcm8704_init_user_dev3(struct niu *np)
755 {
756 int err;
757
758 err = mdio_write(np, np->phy_addr,
759 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
760 (USER_CONTROL_OPTXRST_LVL |
761 USER_CONTROL_OPBIASFLT_LVL |
762 USER_CONTROL_OBTMPFLT_LVL |
763 USER_CONTROL_OPPRFLT_LVL |
764 USER_CONTROL_OPTXFLT_LVL |
765 USER_CONTROL_OPRXLOS_LVL |
766 USER_CONTROL_OPRXFLT_LVL |
767 USER_CONTROL_OPTXON_LVL |
768 (0x3f << USER_CONTROL_RES1_SHIFT)));
769 if (err)
770 return err;
771
772 err = mdio_write(np, np->phy_addr,
773 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
774 (USER_PMD_TX_CTL_XFP_CLKEN |
775 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
776 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
777 USER_PMD_TX_CTL_TSCK_LPWREN));
778 if (err)
779 return err;
780
781 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
782 if (err)
783 return err;
784 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
785 if (err)
786 return err;
787
788 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
789 BCM8704_USER_OPT_DIGITAL_CTRL);
790 if (err < 0)
791 return err;
792 err &= ~USER_ODIG_CTRL_GPIOS;
793 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
794 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
795 BCM8704_USER_OPT_DIGITAL_CTRL, err);
796 if (err)
797 return err;
798
799 mdelay(1000);
800
801 return 0;
802 }
803
804 static int xcvr_init_10g(struct niu *np)
805 {
806 struct niu_link_config *lp = &np->link_config;
807 u16 analog_stat0, tx_alarm_status;
808 int err;
809 u64 val;
810
811 val = nr64_mac(XMAC_CONFIG);
812 val &= ~XMAC_CONFIG_LED_POLARITY;
813 val |= XMAC_CONFIG_FORCE_LED_ON;
814 nw64_mac(XMAC_CONFIG, val);
815
816 /* XXX shared resource, lock parent XXX */
817 val = nr64(MIF_CONFIG);
818 val |= MIF_CONFIG_INDIRECT_MODE;
819 nw64(MIF_CONFIG, val);
820
821 err = bcm8704_reset(np);
822 if (err)
823 return err;
824
825 err = bcm8704_init_user_dev3(np);
826 if (err)
827 return err;
828
829 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
830 MII_BMCR);
831 if (err < 0)
832 return err;
833 err &= ~BMCR_LOOPBACK;
834
835 if (lp->loopback_mode == LOOPBACK_MAC)
836 err |= BMCR_LOOPBACK;
837
838 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
839 MII_BMCR, err);
840 if (err)
841 return err;
842
843 #if 1
844 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
845 MII_STAT1000);
846 if (err < 0)
847 return err;
848 pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
849 np->port, err);
850
851 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
852 if (err < 0)
853 return err;
854 pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
855 np->port, err);
856
857 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
858 MII_NWAYTEST);
859 if (err < 0)
860 return err;
861 pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
862 np->port, err);
863 #endif
864
865 /* XXX dig this out it might not be so useful XXX */
866 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
867 BCM8704_USER_ANALOG_STATUS0);
868 if (err < 0)
869 return err;
870 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
871 BCM8704_USER_ANALOG_STATUS0);
872 if (err < 0)
873 return err;
874 analog_stat0 = err;
875
876 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
877 BCM8704_USER_TX_ALARM_STATUS);
878 if (err < 0)
879 return err;
880 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
881 BCM8704_USER_TX_ALARM_STATUS);
882 if (err < 0)
883 return err;
884 tx_alarm_status = err;
885
886 if (analog_stat0 != 0x03fc) {
887 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
888 pr_info(PFX "Port %u cable not connected "
889 "or bad cable.\n", np->port);
890 } else if (analog_stat0 == 0x639c) {
891 pr_info(PFX "Port %u optical module is bad "
892 "or missing.\n", np->port);
893 }
894 }
895
896 return 0;
897 }
898
899 static int mii_reset(struct niu *np)
900 {
901 int limit, err;
902
903 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
904 if (err)
905 return err;
906
907 limit = 1000;
908 while (--limit >= 0) {
909 udelay(500);
910 err = mii_read(np, np->phy_addr, MII_BMCR);
911 if (err < 0)
912 return err;
913 if (!(err & BMCR_RESET))
914 break;
915 }
916 if (limit < 0) {
917 dev_err(np->device, PFX "Port %u MII would not reset, "
918 "bmcr[%04x]\n", np->port, err);
919 return -ENODEV;
920 }
921
922 return 0;
923 }
924
925 static int mii_init_common(struct niu *np)
926 {
927 struct niu_link_config *lp = &np->link_config;
928 u16 bmcr, bmsr, adv, estat;
929 int err;
930
931 err = mii_reset(np);
932 if (err)
933 return err;
934
935 err = mii_read(np, np->phy_addr, MII_BMSR);
936 if (err < 0)
937 return err;
938 bmsr = err;
939
940 estat = 0;
941 if (bmsr & BMSR_ESTATEN) {
942 err = mii_read(np, np->phy_addr, MII_ESTATUS);
943 if (err < 0)
944 return err;
945 estat = err;
946 }
947
948 bmcr = 0;
949 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
950 if (err)
951 return err;
952
953 if (lp->loopback_mode == LOOPBACK_MAC) {
954 bmcr |= BMCR_LOOPBACK;
955 if (lp->active_speed == SPEED_1000)
956 bmcr |= BMCR_SPEED1000;
957 if (lp->active_duplex == DUPLEX_FULL)
958 bmcr |= BMCR_FULLDPLX;
959 }
960
961 if (lp->loopback_mode == LOOPBACK_PHY) {
962 u16 aux;
963
964 aux = (BCM5464R_AUX_CTL_EXT_LB |
965 BCM5464R_AUX_CTL_WRITE_1);
966 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
967 if (err)
968 return err;
969 }
970
971 /* XXX configurable XXX */
972 /* XXX for now don't advertise half-duplex or asym pause... XXX */
973 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
974 if (bmsr & BMSR_10FULL)
975 adv |= ADVERTISE_10FULL;
976 if (bmsr & BMSR_100FULL)
977 adv |= ADVERTISE_100FULL;
978 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
979 if (err)
980 return err;
981
982 if (bmsr & BMSR_ESTATEN) {
983 u16 ctrl1000 = 0;
984
985 if (estat & ESTATUS_1000_TFULL)
986 ctrl1000 |= ADVERTISE_1000FULL;
987 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
988 if (err)
989 return err;
990 }
991 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
992
993 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
994 if (err)
995 return err;
996
997 err = mii_read(np, np->phy_addr, MII_BMCR);
998 if (err < 0)
999 return err;
1000 err = mii_read(np, np->phy_addr, MII_BMSR);
1001 if (err < 0)
1002 return err;
1003 #if 0
1004 pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1005 np->port, bmcr, bmsr);
1006 #endif
1007
1008 return 0;
1009 }
1010
1011 static int xcvr_init_1g(struct niu *np)
1012 {
1013 u64 val;
1014
1015 /* XXX shared resource, lock parent XXX */
1016 val = nr64(MIF_CONFIG);
1017 val &= ~MIF_CONFIG_INDIRECT_MODE;
1018 nw64(MIF_CONFIG, val);
1019
1020 return mii_init_common(np);
1021 }
1022
1023 static int niu_xcvr_init(struct niu *np)
1024 {
1025 const struct niu_phy_ops *ops = np->phy_ops;
1026 int err;
1027
1028 err = 0;
1029 if (ops->xcvr_init)
1030 err = ops->xcvr_init(np);
1031
1032 return err;
1033 }
1034
1035 static int niu_serdes_init(struct niu *np)
1036 {
1037 const struct niu_phy_ops *ops = np->phy_ops;
1038 int err;
1039
1040 err = 0;
1041 if (ops->serdes_init)
1042 err = ops->serdes_init(np);
1043
1044 return err;
1045 }
1046
1047 static void niu_init_xif(struct niu *);
1048 static void niu_handle_led(struct niu *, int status);
1049
1050 static int niu_link_status_common(struct niu *np, int link_up)
1051 {
1052 struct niu_link_config *lp = &np->link_config;
1053 struct net_device *dev = np->dev;
1054 unsigned long flags;
1055
1056 if (!netif_carrier_ok(dev) && link_up) {
1057 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1058 dev->name,
1059 (lp->active_speed == SPEED_10000 ?
1060 "10Gb/sec" :
1061 (lp->active_speed == SPEED_1000 ?
1062 "1Gb/sec" :
1063 (lp->active_speed == SPEED_100 ?
1064 "100Mbit/sec" : "10Mbit/sec"))),
1065 (lp->active_duplex == DUPLEX_FULL ?
1066 "full" : "half"));
1067
1068 spin_lock_irqsave(&np->lock, flags);
1069 niu_init_xif(np);
1070 niu_handle_led(np, 1);
1071 spin_unlock_irqrestore(&np->lock, flags);
1072
1073 netif_carrier_on(dev);
1074 } else if (netif_carrier_ok(dev) && !link_up) {
1075 niuwarn(LINK, "%s: Link is down\n", dev->name);
1076 spin_lock_irqsave(&np->lock, flags);
1077 niu_handle_led(np, 0);
1078 spin_unlock_irqrestore(&np->lock, flags);
1079 netif_carrier_off(dev);
1080 }
1081
1082 return 0;
1083 }
1084
1085 static int link_status_10g(struct niu *np, int *link_up_p)
1086 {
1087 unsigned long flags;
1088 int err, link_up;
1089
1090 link_up = 0;
1091
1092 spin_lock_irqsave(&np->lock, flags);
1093
1094 err = -EINVAL;
1095 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1096 goto out;
1097
1098 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1099 BCM8704_PMD_RCV_SIGDET);
1100 if (err < 0)
1101 goto out;
1102 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1103 err = 0;
1104 goto out;
1105 }
1106
1107 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1108 BCM8704_PCS_10G_R_STATUS);
1109 if (err < 0)
1110 goto out;
1111 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1112 err = 0;
1113 goto out;
1114 }
1115
1116 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1117 BCM8704_PHYXS_XGXS_LANE_STAT);
1118 if (err < 0)
1119 goto out;
1120
1121 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1122 PHYXS_XGXS_LANE_STAT_MAGIC |
1123 PHYXS_XGXS_LANE_STAT_LANE3 |
1124 PHYXS_XGXS_LANE_STAT_LANE2 |
1125 PHYXS_XGXS_LANE_STAT_LANE1 |
1126 PHYXS_XGXS_LANE_STAT_LANE0)) {
1127 err = 0;
1128 goto out;
1129 }
1130
1131 link_up = 1;
1132 np->link_config.active_speed = SPEED_10000;
1133 np->link_config.active_duplex = DUPLEX_FULL;
1134 err = 0;
1135
1136 out:
1137 spin_unlock_irqrestore(&np->lock, flags);
1138
1139 *link_up_p = link_up;
1140 return err;
1141 }
1142
1143 static int link_status_1g(struct niu *np, int *link_up_p)
1144 {
1145 u16 current_speed, bmsr;
1146 unsigned long flags;
1147 u8 current_duplex;
1148 int err, link_up;
1149
1150 link_up = 0;
1151 current_speed = SPEED_INVALID;
1152 current_duplex = DUPLEX_INVALID;
1153
1154 spin_lock_irqsave(&np->lock, flags);
1155
1156 err = -EINVAL;
1157 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1158 goto out;
1159
1160 err = mii_read(np, np->phy_addr, MII_BMSR);
1161 if (err < 0)
1162 goto out;
1163
1164 bmsr = err;
1165 if (bmsr & BMSR_LSTATUS) {
1166 u16 adv, lpa, common, estat;
1167
1168 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1169 if (err < 0)
1170 goto out;
1171 adv = err;
1172
1173 err = mii_read(np, np->phy_addr, MII_LPA);
1174 if (err < 0)
1175 goto out;
1176 lpa = err;
1177
1178 common = adv & lpa;
1179
1180 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1181 if (err < 0)
1182 goto out;
1183 estat = err;
1184
1185 link_up = 1;
1186 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
1187 current_speed = SPEED_1000;
1188 if (estat & ESTATUS_1000_TFULL)
1189 current_duplex = DUPLEX_FULL;
1190 else
1191 current_duplex = DUPLEX_HALF;
1192 } else {
1193 if (common & ADVERTISE_100BASE4) {
1194 current_speed = SPEED_100;
1195 current_duplex = DUPLEX_HALF;
1196 } else if (common & ADVERTISE_100FULL) {
1197 current_speed = SPEED_100;
1198 current_duplex = DUPLEX_FULL;
1199 } else if (common & ADVERTISE_100HALF) {
1200 current_speed = SPEED_100;
1201 current_duplex = DUPLEX_HALF;
1202 } else if (common & ADVERTISE_10FULL) {
1203 current_speed = SPEED_10;
1204 current_duplex = DUPLEX_FULL;
1205 } else if (common & ADVERTISE_10HALF) {
1206 current_speed = SPEED_10;
1207 current_duplex = DUPLEX_HALF;
1208 } else
1209 link_up = 0;
1210 }
1211 }
1212 err = 0;
1213
1214 out:
1215 spin_unlock_irqrestore(&np->lock, flags);
1216
1217 *link_up_p = link_up;
1218 return err;
1219 }
1220
1221 static int niu_link_status(struct niu *np, int *link_up_p)
1222 {
1223 const struct niu_phy_ops *ops = np->phy_ops;
1224 int err;
1225
1226 err = 0;
1227 if (ops->link_status)
1228 err = ops->link_status(np, link_up_p);
1229
1230 return err;
1231 }
1232
1233 static void niu_timer(unsigned long __opaque)
1234 {
1235 struct niu *np = (struct niu *) __opaque;
1236 unsigned long off;
1237 int err, link_up;
1238
1239 err = niu_link_status(np, &link_up);
1240 if (!err)
1241 niu_link_status_common(np, link_up);
1242
1243 if (netif_carrier_ok(np->dev))
1244 off = 5 * HZ;
1245 else
1246 off = 1 * HZ;
1247 np->timer.expires = jiffies + off;
1248
1249 add_timer(&np->timer);
1250 }
1251
1252 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
1253 .serdes_init = serdes_init_niu,
1254 .xcvr_init = xcvr_init_10g,
1255 .link_status = link_status_10g,
1256 };
1257
1258 static const struct niu_phy_ops phy_ops_10g_fiber = {
1259 .serdes_init = serdes_init_10g,
1260 .xcvr_init = xcvr_init_10g,
1261 .link_status = link_status_10g,
1262 };
1263
1264 static const struct niu_phy_ops phy_ops_10g_copper = {
1265 .serdes_init = serdes_init_10g,
1266 .link_status = link_status_10g, /* XXX */
1267 };
1268
1269 static const struct niu_phy_ops phy_ops_1g_fiber = {
1270 .serdes_init = serdes_init_1g,
1271 .xcvr_init = xcvr_init_1g,
1272 .link_status = link_status_1g,
1273 };
1274
1275 static const struct niu_phy_ops phy_ops_1g_copper = {
1276 .xcvr_init = xcvr_init_1g,
1277 .link_status = link_status_1g,
1278 };
1279
1280 struct niu_phy_template {
1281 const struct niu_phy_ops *ops;
1282 u32 phy_addr_base;
1283 };
1284
1285 static const struct niu_phy_template phy_template_niu = {
1286 .ops = &phy_ops_10g_fiber_niu,
1287 .phy_addr_base = 16,
1288 };
1289
1290 static const struct niu_phy_template phy_template_10g_fiber = {
1291 .ops = &phy_ops_10g_fiber,
1292 .phy_addr_base = 8,
1293 };
1294
1295 static const struct niu_phy_template phy_template_10g_copper = {
1296 .ops = &phy_ops_10g_copper,
1297 .phy_addr_base = 10,
1298 };
1299
1300 static const struct niu_phy_template phy_template_1g_fiber = {
1301 .ops = &phy_ops_1g_fiber,
1302 .phy_addr_base = 0,
1303 };
1304
1305 static const struct niu_phy_template phy_template_1g_copper = {
1306 .ops = &phy_ops_1g_copper,
1307 .phy_addr_base = 0,
1308 };
1309
1310 static int niu_determine_phy_disposition(struct niu *np)
1311 {
1312 struct niu_parent *parent = np->parent;
1313 u8 plat_type = parent->plat_type;
1314 const struct niu_phy_template *tp;
1315 u32 phy_addr_off = 0;
1316
1317 if (plat_type == PLAT_TYPE_NIU) {
1318 tp = &phy_template_niu;
1319 phy_addr_off += np->port;
1320 } else {
1321 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
1322 case 0:
1323 /* 1G copper */
1324 tp = &phy_template_1g_copper;
1325 if (plat_type == PLAT_TYPE_VF_P0)
1326 phy_addr_off = 10;
1327 else if (plat_type == PLAT_TYPE_VF_P1)
1328 phy_addr_off = 26;
1329
1330 phy_addr_off += (np->port ^ 0x3);
1331 break;
1332
1333 case NIU_FLAGS_10G:
1334 /* 10G copper */
1335 tp = &phy_template_1g_copper;
1336 break;
1337
1338 case NIU_FLAGS_FIBER:
1339 /* 1G fiber */
1340 tp = &phy_template_1g_fiber;
1341 break;
1342
1343 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
1344 /* 10G fiber */
1345 tp = &phy_template_10g_fiber;
1346 if (plat_type == PLAT_TYPE_VF_P0 ||
1347 plat_type == PLAT_TYPE_VF_P1)
1348 phy_addr_off = 8;
1349 phy_addr_off += np->port;
1350 break;
1351
1352 default:
1353 return -EINVAL;
1354 }
1355 }
1356
1357 np->phy_ops = tp->ops;
1358 np->phy_addr = tp->phy_addr_base + phy_addr_off;
1359
1360 return 0;
1361 }
1362
1363 static int niu_init_link(struct niu *np)
1364 {
1365 struct niu_parent *parent = np->parent;
1366 int err, ignore;
1367
1368 if (parent->plat_type == PLAT_TYPE_NIU) {
1369 err = niu_xcvr_init(np);
1370 if (err)
1371 return err;
1372 msleep(200);
1373 }
1374 err = niu_serdes_init(np);
1375 if (err)
1376 return err;
1377 msleep(200);
1378 err = niu_xcvr_init(np);
1379 if (!err)
1380 niu_link_status(np, &ignore);
1381 return 0;
1382 }
1383
1384 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
1385 {
1386 u16 reg0 = addr[4] << 8 | addr[5];
1387 u16 reg1 = addr[2] << 8 | addr[3];
1388 u16 reg2 = addr[0] << 8 | addr[1];
1389
1390 if (np->flags & NIU_FLAGS_XMAC) {
1391 nw64_mac(XMAC_ADDR0, reg0);
1392 nw64_mac(XMAC_ADDR1, reg1);
1393 nw64_mac(XMAC_ADDR2, reg2);
1394 } else {
1395 nw64_mac(BMAC_ADDR0, reg0);
1396 nw64_mac(BMAC_ADDR1, reg1);
1397 nw64_mac(BMAC_ADDR2, reg2);
1398 }
1399 }
1400
1401 static int niu_num_alt_addr(struct niu *np)
1402 {
1403 if (np->flags & NIU_FLAGS_XMAC)
1404 return XMAC_NUM_ALT_ADDR;
1405 else
1406 return BMAC_NUM_ALT_ADDR;
1407 }
1408
1409 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
1410 {
1411 u16 reg0 = addr[4] << 8 | addr[5];
1412 u16 reg1 = addr[2] << 8 | addr[3];
1413 u16 reg2 = addr[0] << 8 | addr[1];
1414
1415 if (index >= niu_num_alt_addr(np))
1416 return -EINVAL;
1417
1418 if (np->flags & NIU_FLAGS_XMAC) {
1419 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
1420 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
1421 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
1422 } else {
1423 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
1424 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
1425 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
1426 }
1427
1428 return 0;
1429 }
1430
1431 static int niu_enable_alt_mac(struct niu *np, int index, int on)
1432 {
1433 unsigned long reg;
1434 u64 val, mask;
1435
1436 if (index >= niu_num_alt_addr(np))
1437 return -EINVAL;
1438
1439 if (np->flags & NIU_FLAGS_XMAC)
1440 reg = XMAC_ADDR_CMPEN;
1441 else
1442 reg = BMAC_ADDR_CMPEN;
1443
1444 mask = 1 << index;
1445
1446 val = nr64_mac(reg);
1447 if (on)
1448 val |= mask;
1449 else
1450 val &= ~mask;
1451 nw64_mac(reg, val);
1452
1453 return 0;
1454 }
1455
1456 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
1457 int num, int mac_pref)
1458 {
1459 u64 val = nr64_mac(reg);
1460 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
1461 val |= num;
1462 if (mac_pref)
1463 val |= HOST_INFO_MPR;
1464 nw64_mac(reg, val);
1465 }
1466
1467 static int __set_rdc_table_num(struct niu *np,
1468 int xmac_index, int bmac_index,
1469 int rdc_table_num, int mac_pref)
1470 {
1471 unsigned long reg;
1472
1473 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
1474 return -EINVAL;
1475 if (np->flags & NIU_FLAGS_XMAC)
1476 reg = XMAC_HOST_INFO(xmac_index);
1477 else
1478 reg = BMAC_HOST_INFO(bmac_index);
1479 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
1480 return 0;
1481 }
1482
1483 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
1484 int mac_pref)
1485 {
1486 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
1487 }
1488
1489 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
1490 int mac_pref)
1491 {
1492 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
1493 }
1494
1495 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
1496 int table_num, int mac_pref)
1497 {
1498 if (idx >= niu_num_alt_addr(np))
1499 return -EINVAL;
1500 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
1501 }
1502
1503 static u64 vlan_entry_set_parity(u64 reg_val)
1504 {
1505 u64 port01_mask;
1506 u64 port23_mask;
1507
1508 port01_mask = 0x00ff;
1509 port23_mask = 0xff00;
1510
1511 if (hweight64(reg_val & port01_mask) & 1)
1512 reg_val |= ENET_VLAN_TBL_PARITY0;
1513 else
1514 reg_val &= ~ENET_VLAN_TBL_PARITY0;
1515
1516 if (hweight64(reg_val & port23_mask) & 1)
1517 reg_val |= ENET_VLAN_TBL_PARITY1;
1518 else
1519 reg_val &= ~ENET_VLAN_TBL_PARITY1;
1520
1521 return reg_val;
1522 }
1523
1524 static void vlan_tbl_write(struct niu *np, unsigned long index,
1525 int port, int vpr, int rdc_table)
1526 {
1527 u64 reg_val = nr64(ENET_VLAN_TBL(index));
1528
1529 reg_val &= ~((ENET_VLAN_TBL_VPR |
1530 ENET_VLAN_TBL_VLANRDCTBLN) <<
1531 ENET_VLAN_TBL_SHIFT(port));
1532 if (vpr)
1533 reg_val |= (ENET_VLAN_TBL_VPR <<
1534 ENET_VLAN_TBL_SHIFT(port));
1535 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
1536
1537 reg_val = vlan_entry_set_parity(reg_val);
1538
1539 nw64(ENET_VLAN_TBL(index), reg_val);
1540 }
1541
1542 static void vlan_tbl_clear(struct niu *np)
1543 {
1544 int i;
1545
1546 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
1547 nw64(ENET_VLAN_TBL(i), 0);
1548 }
1549
1550 static int tcam_wait_bit(struct niu *np, u64 bit)
1551 {
1552 int limit = 1000;
1553
1554 while (--limit > 0) {
1555 if (nr64(TCAM_CTL) & bit)
1556 break;
1557 udelay(1);
1558 }
1559 if (limit < 0)
1560 return -ENODEV;
1561
1562 return 0;
1563 }
1564
1565 static int tcam_flush(struct niu *np, int index)
1566 {
1567 nw64(TCAM_KEY_0, 0x00);
1568 nw64(TCAM_KEY_MASK_0, 0xff);
1569 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1570
1571 return tcam_wait_bit(np, TCAM_CTL_STAT);
1572 }
1573
1574 #if 0
1575 static int tcam_read(struct niu *np, int index,
1576 u64 *key, u64 *mask)
1577 {
1578 int err;
1579
1580 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
1581 err = tcam_wait_bit(np, TCAM_CTL_STAT);
1582 if (!err) {
1583 key[0] = nr64(TCAM_KEY_0);
1584 key[1] = nr64(TCAM_KEY_1);
1585 key[2] = nr64(TCAM_KEY_2);
1586 key[3] = nr64(TCAM_KEY_3);
1587 mask[0] = nr64(TCAM_KEY_MASK_0);
1588 mask[1] = nr64(TCAM_KEY_MASK_1);
1589 mask[2] = nr64(TCAM_KEY_MASK_2);
1590 mask[3] = nr64(TCAM_KEY_MASK_3);
1591 }
1592 return err;
1593 }
1594 #endif
1595
1596 static int tcam_write(struct niu *np, int index,
1597 u64 *key, u64 *mask)
1598 {
1599 nw64(TCAM_KEY_0, key[0]);
1600 nw64(TCAM_KEY_1, key[1]);
1601 nw64(TCAM_KEY_2, key[2]);
1602 nw64(TCAM_KEY_3, key[3]);
1603 nw64(TCAM_KEY_MASK_0, mask[0]);
1604 nw64(TCAM_KEY_MASK_1, mask[1]);
1605 nw64(TCAM_KEY_MASK_2, mask[2]);
1606 nw64(TCAM_KEY_MASK_3, mask[3]);
1607 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1608
1609 return tcam_wait_bit(np, TCAM_CTL_STAT);
1610 }
1611
1612 #if 0
1613 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
1614 {
1615 int err;
1616
1617 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
1618 err = tcam_wait_bit(np, TCAM_CTL_STAT);
1619 if (!err)
1620 *data = nr64(TCAM_KEY_1);
1621
1622 return err;
1623 }
1624 #endif
1625
1626 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
1627 {
1628 nw64(TCAM_KEY_1, assoc_data);
1629 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
1630
1631 return tcam_wait_bit(np, TCAM_CTL_STAT);
1632 }
1633
1634 static void tcam_enable(struct niu *np, int on)
1635 {
1636 u64 val = nr64(FFLP_CFG_1);
1637
1638 if (on)
1639 val &= ~FFLP_CFG_1_TCAM_DIS;
1640 else
1641 val |= FFLP_CFG_1_TCAM_DIS;
1642 nw64(FFLP_CFG_1, val);
1643 }
1644
1645 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
1646 {
1647 u64 val = nr64(FFLP_CFG_1);
1648
1649 val &= ~(FFLP_CFG_1_FFLPINITDONE |
1650 FFLP_CFG_1_CAMLAT |
1651 FFLP_CFG_1_CAMRATIO);
1652 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
1653 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
1654 nw64(FFLP_CFG_1, val);
1655
1656 val = nr64(FFLP_CFG_1);
1657 val |= FFLP_CFG_1_FFLPINITDONE;
1658 nw64(FFLP_CFG_1, val);
1659 }
1660
1661 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
1662 int on)
1663 {
1664 unsigned long reg;
1665 u64 val;
1666
1667 if (class < CLASS_CODE_ETHERTYPE1 ||
1668 class > CLASS_CODE_ETHERTYPE2)
1669 return -EINVAL;
1670
1671 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1672 val = nr64(reg);
1673 if (on)
1674 val |= L2_CLS_VLD;
1675 else
1676 val &= ~L2_CLS_VLD;
1677 nw64(reg, val);
1678
1679 return 0;
1680 }
1681
1682 #if 0
1683 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
1684 u64 ether_type)
1685 {
1686 unsigned long reg;
1687 u64 val;
1688
1689 if (class < CLASS_CODE_ETHERTYPE1 ||
1690 class > CLASS_CODE_ETHERTYPE2 ||
1691 (ether_type & ~(u64)0xffff) != 0)
1692 return -EINVAL;
1693
1694 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1695 val = nr64(reg);
1696 val &= ~L2_CLS_ETYPE;
1697 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
1698 nw64(reg, val);
1699
1700 return 0;
1701 }
1702 #endif
1703
1704 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
1705 int on)
1706 {
1707 unsigned long reg;
1708 u64 val;
1709
1710 if (class < CLASS_CODE_USER_PROG1 ||
1711 class > CLASS_CODE_USER_PROG4)
1712 return -EINVAL;
1713
1714 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1715 val = nr64(reg);
1716 if (on)
1717 val |= L3_CLS_VALID;
1718 else
1719 val &= ~L3_CLS_VALID;
1720 nw64(reg, val);
1721
1722 return 0;
1723 }
1724
1725 #if 0
1726 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
1727 int ipv6, u64 protocol_id,
1728 u64 tos_mask, u64 tos_val)
1729 {
1730 unsigned long reg;
1731 u64 val;
1732
1733 if (class < CLASS_CODE_USER_PROG1 ||
1734 class > CLASS_CODE_USER_PROG4 ||
1735 (protocol_id & ~(u64)0xff) != 0 ||
1736 (tos_mask & ~(u64)0xff) != 0 ||
1737 (tos_val & ~(u64)0xff) != 0)
1738 return -EINVAL;
1739
1740 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1741 val = nr64(reg);
1742 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
1743 L3_CLS_TOSMASK | L3_CLS_TOS);
1744 if (ipv6)
1745 val |= L3_CLS_IPVER;
1746 val |= (protocol_id << L3_CLS_PID_SHIFT);
1747 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
1748 val |= (tos_val << L3_CLS_TOS_SHIFT);
1749 nw64(reg, val);
1750
1751 return 0;
1752 }
1753 #endif
1754
1755 static int tcam_early_init(struct niu *np)
1756 {
1757 unsigned long i;
1758 int err;
1759
1760 tcam_enable(np, 0);
1761 tcam_set_lat_and_ratio(np,
1762 DEFAULT_TCAM_LATENCY,
1763 DEFAULT_TCAM_ACCESS_RATIO);
1764 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
1765 err = tcam_user_eth_class_enable(np, i, 0);
1766 if (err)
1767 return err;
1768 }
1769 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
1770 err = tcam_user_ip_class_enable(np, i, 0);
1771 if (err)
1772 return err;
1773 }
1774
1775 return 0;
1776 }
1777
1778 static int tcam_flush_all(struct niu *np)
1779 {
1780 unsigned long i;
1781
1782 for (i = 0; i < np->parent->tcam_num_entries; i++) {
1783 int err = tcam_flush(np, i);
1784 if (err)
1785 return err;
1786 }
1787 return 0;
1788 }
1789
1790 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
1791 {
1792 return ((u64)index | (num_entries == 1 ?
1793 HASH_TBL_ADDR_AUTOINC : 0));
1794 }
1795
1796 #if 0
1797 static int hash_read(struct niu *np, unsigned long partition,
1798 unsigned long index, unsigned long num_entries,
1799 u64 *data)
1800 {
1801 u64 val = hash_addr_regval(index, num_entries);
1802 unsigned long i;
1803
1804 if (partition >= FCRAM_NUM_PARTITIONS ||
1805 index + num_entries > FCRAM_SIZE)
1806 return -EINVAL;
1807
1808 nw64(HASH_TBL_ADDR(partition), val);
1809 for (i = 0; i < num_entries; i++)
1810 data[i] = nr64(HASH_TBL_DATA(partition));
1811
1812 return 0;
1813 }
1814 #endif
1815
1816 static int hash_write(struct niu *np, unsigned long partition,
1817 unsigned long index, unsigned long num_entries,
1818 u64 *data)
1819 {
1820 u64 val = hash_addr_regval(index, num_entries);
1821 unsigned long i;
1822
1823 if (partition >= FCRAM_NUM_PARTITIONS ||
1824 index + (num_entries * 8) > FCRAM_SIZE)
1825 return -EINVAL;
1826
1827 nw64(HASH_TBL_ADDR(partition), val);
1828 for (i = 0; i < num_entries; i++)
1829 nw64(HASH_TBL_DATA(partition), data[i]);
1830
1831 return 0;
1832 }
1833
1834 static void fflp_reset(struct niu *np)
1835 {
1836 u64 val;
1837
1838 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
1839 udelay(10);
1840 nw64(FFLP_CFG_1, 0);
1841
1842 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
1843 nw64(FFLP_CFG_1, val);
1844 }
1845
1846 static void fflp_set_timings(struct niu *np)
1847 {
1848 u64 val = nr64(FFLP_CFG_1);
1849
1850 val &= ~FFLP_CFG_1_FFLPINITDONE;
1851 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
1852 nw64(FFLP_CFG_1, val);
1853
1854 val = nr64(FFLP_CFG_1);
1855 val |= FFLP_CFG_1_FFLPINITDONE;
1856 nw64(FFLP_CFG_1, val);
1857
1858 val = nr64(FCRAM_REF_TMR);
1859 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
1860 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
1861 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
1862 nw64(FCRAM_REF_TMR, val);
1863 }
1864
1865 static int fflp_set_partition(struct niu *np, u64 partition,
1866 u64 mask, u64 base, int enable)
1867 {
1868 unsigned long reg;
1869 u64 val;
1870
1871 if (partition >= FCRAM_NUM_PARTITIONS ||
1872 (mask & ~(u64)0x1f) != 0 ||
1873 (base & ~(u64)0x1f) != 0)
1874 return -EINVAL;
1875
1876 reg = FLW_PRT_SEL(partition);
1877
1878 val = nr64(reg);
1879 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
1880 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
1881 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
1882 if (enable)
1883 val |= FLW_PRT_SEL_EXT;
1884 nw64(reg, val);
1885
1886 return 0;
1887 }
1888
1889 static int fflp_disable_all_partitions(struct niu *np)
1890 {
1891 unsigned long i;
1892
1893 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
1894 int err = fflp_set_partition(np, 0, 0, 0, 0);
1895 if (err)
1896 return err;
1897 }
1898 return 0;
1899 }
1900
1901 static void fflp_llcsnap_enable(struct niu *np, int on)
1902 {
1903 u64 val = nr64(FFLP_CFG_1);
1904
1905 if (on)
1906 val |= FFLP_CFG_1_LLCSNAP;
1907 else
1908 val &= ~FFLP_CFG_1_LLCSNAP;
1909 nw64(FFLP_CFG_1, val);
1910 }
1911
1912 static void fflp_errors_enable(struct niu *np, int on)
1913 {
1914 u64 val = nr64(FFLP_CFG_1);
1915
1916 if (on)
1917 val &= ~FFLP_CFG_1_ERRORDIS;
1918 else
1919 val |= FFLP_CFG_1_ERRORDIS;
1920 nw64(FFLP_CFG_1, val);
1921 }
1922
1923 static int fflp_hash_clear(struct niu *np)
1924 {
1925 struct fcram_hash_ipv4 ent;
1926 unsigned long i;
1927
1928 /* IPV4 hash entry with valid bit clear, rest is don't care. */
1929 memset(&ent, 0, sizeof(ent));
1930 ent.header = HASH_HEADER_EXT;
1931
1932 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
1933 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
1934 if (err)
1935 return err;
1936 }
1937 return 0;
1938 }
1939
1940 static int fflp_early_init(struct niu *np)
1941 {
1942 struct niu_parent *parent;
1943 unsigned long flags;
1944 int err;
1945
1946 niu_lock_parent(np, flags);
1947
1948 parent = np->parent;
1949 err = 0;
1950 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
1951 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
1952 np->port);
1953 if (np->parent->plat_type != PLAT_TYPE_NIU) {
1954 fflp_reset(np);
1955 fflp_set_timings(np);
1956 err = fflp_disable_all_partitions(np);
1957 if (err) {
1958 niudbg(PROBE, "fflp_disable_all_partitions "
1959 "failed, err=%d\n", err);
1960 goto out;
1961 }
1962 }
1963
1964 err = tcam_early_init(np);
1965 if (err) {
1966 niudbg(PROBE, "tcam_early_init failed, err=%d\n",
1967 err);
1968 goto out;
1969 }
1970 fflp_llcsnap_enable(np, 1);
1971 fflp_errors_enable(np, 0);
1972 nw64(H1POLY, 0);
1973 nw64(H2POLY, 0);
1974
1975 err = tcam_flush_all(np);
1976 if (err) {
1977 niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
1978 err);
1979 goto out;
1980 }
1981 if (np->parent->plat_type != PLAT_TYPE_NIU) {
1982 err = fflp_hash_clear(np);
1983 if (err) {
1984 niudbg(PROBE, "fflp_hash_clear failed, "
1985 "err=%d\n", err);
1986 goto out;
1987 }
1988 }
1989
1990 vlan_tbl_clear(np);
1991
1992 niudbg(PROBE, "fflp_early_init: Success\n");
1993 parent->flags |= PARENT_FLGS_CLS_HWINIT;
1994 }
1995 out:
1996 niu_unlock_parent(np, flags);
1997 return err;
1998 }
1999
2000 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
2001 {
2002 if (class_code < CLASS_CODE_USER_PROG1 ||
2003 class_code > CLASS_CODE_SCTP_IPV6)
2004 return -EINVAL;
2005
2006 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2007 return 0;
2008 }
2009
2010 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
2011 {
2012 if (class_code < CLASS_CODE_USER_PROG1 ||
2013 class_code > CLASS_CODE_SCTP_IPV6)
2014 return -EINVAL;
2015
2016 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2017 return 0;
2018 }
2019
2020 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
2021 u32 offset, u32 size)
2022 {
2023 int i = skb_shinfo(skb)->nr_frags;
2024 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2025
2026 frag->page = page;
2027 frag->page_offset = offset;
2028 frag->size = size;
2029
2030 skb->len += size;
2031 skb->data_len += size;
2032 skb->truesize += size;
2033
2034 skb_shinfo(skb)->nr_frags = i + 1;
2035 }
2036
2037 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
2038 {
2039 a >>= PAGE_SHIFT;
2040 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
2041
2042 return (a & (MAX_RBR_RING_SIZE - 1));
2043 }
2044
2045 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
2046 struct page ***link)
2047 {
2048 unsigned int h = niu_hash_rxaddr(rp, addr);
2049 struct page *p, **pp;
2050
2051 addr &= PAGE_MASK;
2052 pp = &rp->rxhash[h];
2053 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
2054 if (p->index == addr) {
2055 *link = pp;
2056 break;
2057 }
2058 }
2059
2060 return p;
2061 }
2062
2063 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
2064 {
2065 unsigned int h = niu_hash_rxaddr(rp, base);
2066
2067 page->index = base;
2068 page->mapping = (struct address_space *) rp->rxhash[h];
2069 rp->rxhash[h] = page;
2070 }
2071
2072 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
2073 gfp_t mask, int start_index)
2074 {
2075 struct page *page;
2076 u64 addr;
2077 int i;
2078
2079 page = alloc_page(mask);
2080 if (!page)
2081 return -ENOMEM;
2082
2083 addr = np->ops->map_page(np->device, page, 0,
2084 PAGE_SIZE, DMA_FROM_DEVICE);
2085
2086 niu_hash_page(rp, page, addr);
2087 if (rp->rbr_blocks_per_page > 1)
2088 atomic_add(rp->rbr_blocks_per_page - 1,
2089 &compound_head(page)->_count);
2090
2091 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
2092 __le32 *rbr = &rp->rbr[start_index + i];
2093
2094 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
2095 addr += rp->rbr_block_size;
2096 }
2097
2098 return 0;
2099 }
2100
2101 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2102 {
2103 int index = rp->rbr_index;
2104
2105 rp->rbr_pending++;
2106 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
2107 int err = niu_rbr_add_page(np, rp, mask, index);
2108
2109 if (unlikely(err)) {
2110 rp->rbr_pending--;
2111 return;
2112 }
2113
2114 rp->rbr_index += rp->rbr_blocks_per_page;
2115 BUG_ON(rp->rbr_index > rp->rbr_table_size);
2116 if (rp->rbr_index == rp->rbr_table_size)
2117 rp->rbr_index = 0;
2118
2119 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
2120 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
2121 rp->rbr_pending = 0;
2122 }
2123 }
2124 }
2125
2126 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
2127 {
2128 unsigned int index = rp->rcr_index;
2129 int num_rcr = 0;
2130
2131 rp->rx_dropped++;
2132 while (1) {
2133 struct page *page, **link;
2134 u64 addr, val;
2135 u32 rcr_size;
2136
2137 num_rcr++;
2138
2139 val = le64_to_cpup(&rp->rcr[index]);
2140 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2141 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2142 page = niu_find_rxpage(rp, addr, &link);
2143
2144 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2145 RCR_ENTRY_PKTBUFSZ_SHIFT];
2146 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
2147 *link = (struct page *) page->mapping;
2148 np->ops->unmap_page(np->device, page->index,
2149 PAGE_SIZE, DMA_FROM_DEVICE);
2150 page->index = 0;
2151 page->mapping = NULL;
2152 __free_page(page);
2153 rp->rbr_refill_pending++;
2154 }
2155
2156 index = NEXT_RCR(rp, index);
2157 if (!(val & RCR_ENTRY_MULTI))
2158 break;
2159
2160 }
2161 rp->rcr_index = index;
2162
2163 return num_rcr;
2164 }
2165
2166 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
2167 {
2168 unsigned int index = rp->rcr_index;
2169 struct sk_buff *skb;
2170 int len, num_rcr;
2171
2172 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
2173 if (unlikely(!skb))
2174 return niu_rx_pkt_ignore(np, rp);
2175
2176 num_rcr = 0;
2177 while (1) {
2178 struct page *page, **link;
2179 u32 rcr_size, append_size;
2180 u64 addr, val, off;
2181
2182 num_rcr++;
2183
2184 val = le64_to_cpup(&rp->rcr[index]);
2185
2186 len = (val & RCR_ENTRY_L2_LEN) >>
2187 RCR_ENTRY_L2_LEN_SHIFT;
2188 len -= ETH_FCS_LEN;
2189
2190 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2191 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2192 page = niu_find_rxpage(rp, addr, &link);
2193
2194 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2195 RCR_ENTRY_PKTBUFSZ_SHIFT];
2196
2197 off = addr & ~PAGE_MASK;
2198 append_size = rcr_size;
2199 if (num_rcr == 1) {
2200 int ptype;
2201
2202 off += 2;
2203 append_size -= 2;
2204
2205 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
2206 if ((ptype == RCR_PKT_TYPE_TCP ||
2207 ptype == RCR_PKT_TYPE_UDP) &&
2208 !(val & (RCR_ENTRY_NOPORT |
2209 RCR_ENTRY_ERROR)))
2210 skb->ip_summed = CHECKSUM_UNNECESSARY;
2211 else
2212 skb->ip_summed = CHECKSUM_NONE;
2213 }
2214 if (!(val & RCR_ENTRY_MULTI))
2215 append_size = len - skb->len;
2216
2217 niu_rx_skb_append(skb, page, off, append_size);
2218 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
2219 *link = (struct page *) page->mapping;
2220 np->ops->unmap_page(np->device, page->index,
2221 PAGE_SIZE, DMA_FROM_DEVICE);
2222 page->index = 0;
2223 page->mapping = NULL;
2224 rp->rbr_refill_pending++;
2225 } else
2226 get_page(page);
2227
2228 index = NEXT_RCR(rp, index);
2229 if (!(val & RCR_ENTRY_MULTI))
2230 break;
2231
2232 }
2233 rp->rcr_index = index;
2234
2235 skb_reserve(skb, NET_IP_ALIGN);
2236 __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
2237
2238 rp->rx_packets++;
2239 rp->rx_bytes += skb->len;
2240
2241 skb->protocol = eth_type_trans(skb, np->dev);
2242 netif_receive_skb(skb);
2243
2244 return num_rcr;
2245 }
2246
2247 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2248 {
2249 int blocks_per_page = rp->rbr_blocks_per_page;
2250 int err, index = rp->rbr_index;
2251
2252 err = 0;
2253 while (index < (rp->rbr_table_size - blocks_per_page)) {
2254 err = niu_rbr_add_page(np, rp, mask, index);
2255 if (err)
2256 break;
2257
2258 index += blocks_per_page;
2259 }
2260
2261 rp->rbr_index = index;
2262 return err;
2263 }
2264
2265 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
2266 {
2267 int i;
2268
2269 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
2270 struct page *page;
2271
2272 page = rp->rxhash[i];
2273 while (page) {
2274 struct page *next = (struct page *) page->mapping;
2275 u64 base = page->index;
2276
2277 np->ops->unmap_page(np->device, base, PAGE_SIZE,
2278 DMA_FROM_DEVICE);
2279 page->index = 0;
2280 page->mapping = NULL;
2281
2282 __free_page(page);
2283
2284 page = next;
2285 }
2286 }
2287
2288 for (i = 0; i < rp->rbr_table_size; i++)
2289 rp->rbr[i] = cpu_to_le32(0);
2290 rp->rbr_index = 0;
2291 }
2292
2293 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
2294 {
2295 struct tx_buff_info *tb = &rp->tx_buffs[idx];
2296 struct sk_buff *skb = tb->skb;
2297 struct tx_pkt_hdr *tp;
2298 u64 tx_flags;
2299 int i, len;
2300
2301 tp = (struct tx_pkt_hdr *) skb->data;
2302 tx_flags = le64_to_cpup(&tp->flags);
2303
2304 rp->tx_packets++;
2305 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
2306 ((tx_flags & TXHDR_PAD) / 2));
2307
2308 len = skb_headlen(skb);
2309 np->ops->unmap_single(np->device, tb->mapping,
2310 len, DMA_TO_DEVICE);
2311
2312 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
2313 rp->mark_pending--;
2314
2315 tb->skb = NULL;
2316 do {
2317 idx = NEXT_TX(rp, idx);
2318 len -= MAX_TX_DESC_LEN;
2319 } while (len > 0);
2320
2321 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2322 tb = &rp->tx_buffs[idx];
2323 BUG_ON(tb->skb != NULL);
2324 np->ops->unmap_page(np->device, tb->mapping,
2325 skb_shinfo(skb)->frags[i].size,
2326 DMA_TO_DEVICE);
2327 idx = NEXT_TX(rp, idx);
2328 }
2329
2330 dev_kfree_skb(skb);
2331
2332 return idx;
2333 }
2334
2335 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
2336
2337 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
2338 {
2339 u16 pkt_cnt, tmp;
2340 int cons;
2341 u64 cs;
2342
2343 cs = rp->tx_cs;
2344 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
2345 goto out;
2346
2347 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
2348 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
2349 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
2350
2351 rp->last_pkt_cnt = tmp;
2352
2353 cons = rp->cons;
2354
2355 niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
2356 np->dev->name, pkt_cnt, cons);
2357
2358 while (pkt_cnt--)
2359 cons = release_tx_packet(np, rp, cons);
2360
2361 rp->cons = cons;
2362 smp_mb();
2363
2364 out:
2365 if (unlikely(netif_queue_stopped(np->dev) &&
2366 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
2367 netif_tx_lock(np->dev);
2368 if (netif_queue_stopped(np->dev) &&
2369 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
2370 netif_wake_queue(np->dev);
2371 netif_tx_unlock(np->dev);
2372 }
2373 }
2374
2375 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
2376 {
2377 int qlen, rcr_done = 0, work_done = 0;
2378 struct rxdma_mailbox *mbox = rp->mbox;
2379 u64 stat;
2380
2381 #if 1
2382 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2383 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
2384 #else
2385 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2386 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
2387 #endif
2388 mbox->rx_dma_ctl_stat = 0;
2389 mbox->rcrstat_a = 0;
2390
2391 niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
2392 np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
2393
2394 rcr_done = work_done = 0;
2395 qlen = min(qlen, budget);
2396 while (work_done < qlen) {
2397 rcr_done += niu_process_rx_pkt(np, rp);
2398 work_done++;
2399 }
2400
2401 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
2402 unsigned int i;
2403
2404 for (i = 0; i < rp->rbr_refill_pending; i++)
2405 niu_rbr_refill(np, rp, GFP_ATOMIC);
2406 rp->rbr_refill_pending = 0;
2407 }
2408
2409 stat = (RX_DMA_CTL_STAT_MEX |
2410 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
2411 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
2412
2413 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
2414
2415 return work_done;
2416 }
2417
2418 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
2419 {
2420 u64 v0 = lp->v0;
2421 u32 tx_vec = (v0 >> 32);
2422 u32 rx_vec = (v0 & 0xffffffff);
2423 int i, work_done = 0;
2424
2425 niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
2426 np->dev->name, (unsigned long long) v0);
2427
2428 for (i = 0; i < np->num_tx_rings; i++) {
2429 struct tx_ring_info *rp = &np->tx_rings[i];
2430 if (tx_vec & (1 << rp->tx_channel))
2431 niu_tx_work(np, rp);
2432 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
2433 }
2434
2435 for (i = 0; i < np->num_rx_rings; i++) {
2436 struct rx_ring_info *rp = &np->rx_rings[i];
2437
2438 if (rx_vec & (1 << rp->rx_channel)) {
2439 int this_work_done;
2440
2441 this_work_done = niu_rx_work(np, rp,
2442 budget);
2443
2444 budget -= this_work_done;
2445 work_done += this_work_done;
2446 }
2447 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
2448 }
2449
2450 return work_done;
2451 }
2452
2453 static int niu_poll(struct napi_struct *napi, int budget)
2454 {
2455 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
2456 struct niu *np = lp->np;
2457 int work_done;
2458
2459 work_done = niu_poll_core(np, lp, budget);
2460
2461 if (work_done < budget) {
2462 netif_rx_complete(np->dev, napi);
2463 niu_ldg_rearm(np, lp, 1);
2464 }
2465 return work_done;
2466 }
2467
2468 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
2469 u64 stat)
2470 {
2471 dev_err(np->device, PFX "%s: RX channel %u errors ( ",
2472 np->dev->name, rp->rx_channel);
2473
2474 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
2475 printk("RBR_TMOUT ");
2476 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
2477 printk("RSP_CNT ");
2478 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
2479 printk("BYTE_EN_BUS ");
2480 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
2481 printk("RSP_DAT ");
2482 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
2483 printk("RCR_ACK ");
2484 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
2485 printk("RCR_SHA_PAR ");
2486 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
2487 printk("RBR_PRE_PAR ");
2488 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
2489 printk("CONFIG ");
2490 if (stat & RX_DMA_CTL_STAT_RCRINCON)
2491 printk("RCRINCON ");
2492 if (stat & RX_DMA_CTL_STAT_RCRFULL)
2493 printk("RCRFULL ");
2494 if (stat & RX_DMA_CTL_STAT_RBRFULL)
2495 printk("RBRFULL ");
2496 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
2497 printk("RBRLOGPAGE ");
2498 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
2499 printk("CFIGLOGPAGE ");
2500 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
2501 printk("DC_FIDO ");
2502
2503 printk(")\n");
2504 }
2505
2506 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
2507 {
2508 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2509 int err = 0;
2510
2511
2512 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
2513 RX_DMA_CTL_STAT_PORT_FATAL))
2514 err = -EINVAL;
2515
2516 if (err) {
2517 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
2518 np->dev->name, rp->rx_channel,
2519 (unsigned long long) stat);
2520
2521 niu_log_rxchan_errors(np, rp, stat);
2522 }
2523
2524 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
2525 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
2526
2527 return err;
2528 }
2529
2530 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
2531 u64 cs)
2532 {
2533 dev_err(np->device, PFX "%s: TX channel %u errors ( ",
2534 np->dev->name, rp->tx_channel);
2535
2536 if (cs & TX_CS_MBOX_ERR)
2537 printk("MBOX ");
2538 if (cs & TX_CS_PKT_SIZE_ERR)
2539 printk("PKT_SIZE ");
2540 if (cs & TX_CS_TX_RING_OFLOW)
2541 printk("TX_RING_OFLOW ");
2542 if (cs & TX_CS_PREF_BUF_PAR_ERR)
2543 printk("PREF_BUF_PAR ");
2544 if (cs & TX_CS_NACK_PREF)
2545 printk("NACK_PREF ");
2546 if (cs & TX_CS_NACK_PKT_RD)
2547 printk("NACK_PKT_RD ");
2548 if (cs & TX_CS_CONF_PART_ERR)
2549 printk("CONF_PART ");
2550 if (cs & TX_CS_PKT_PRT_ERR)
2551 printk("PKT_PTR ");
2552
2553 printk(")\n");
2554 }
2555
2556 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
2557 {
2558 u64 cs, logh, logl;
2559
2560 cs = nr64(TX_CS(rp->tx_channel));
2561 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
2562 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
2563
2564 dev_err(np->device, PFX "%s: TX channel %u error, "
2565 "cs[%llx] logh[%llx] logl[%llx]\n",
2566 np->dev->name, rp->tx_channel,
2567 (unsigned long long) cs,
2568 (unsigned long long) logh,
2569 (unsigned long long) logl);
2570
2571 niu_log_txchan_errors(np, rp, cs);
2572
2573 return -ENODEV;
2574 }
2575
2576 static int niu_mif_interrupt(struct niu *np)
2577 {
2578 u64 mif_status = nr64(MIF_STATUS);
2579 int phy_mdint = 0;
2580
2581 if (np->flags & NIU_FLAGS_XMAC) {
2582 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
2583
2584 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
2585 phy_mdint = 1;
2586 }
2587
2588 dev_err(np->device, PFX "%s: MIF interrupt, "
2589 "stat[%llx] phy_mdint(%d)\n",
2590 np->dev->name, (unsigned long long) mif_status, phy_mdint);
2591
2592 return -ENODEV;
2593 }
2594
2595 static void niu_xmac_interrupt(struct niu *np)
2596 {
2597 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
2598 u64 val;
2599
2600 val = nr64_mac(XTXMAC_STATUS);
2601 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
2602 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
2603 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
2604 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
2605 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
2606 mp->tx_fifo_errors++;
2607 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
2608 mp->tx_overflow_errors++;
2609 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
2610 mp->tx_max_pkt_size_errors++;
2611 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
2612 mp->tx_underflow_errors++;
2613
2614 val = nr64_mac(XRXMAC_STATUS);
2615 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
2616 mp->rx_local_faults++;
2617 if (val & XRXMAC_STATUS_RFLT_DET)
2618 mp->rx_remote_faults++;
2619 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
2620 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
2621 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
2622 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
2623 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
2624 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
2625 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
2626 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
2627 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2628 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2629 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2630 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2631 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
2632 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
2633 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
2634 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
2635 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
2636 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
2637 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
2638 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
2639 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
2640 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
2641 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
2642 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
2643 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
2644 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
2645 if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
2646 mp->rx_octets += RXMAC_BT_CNT_COUNT;
2647 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
2648 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
2649 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
2650 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
2651 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
2652 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
2653 if (val & XRXMAC_STATUS_RXUFLOW)
2654 mp->rx_underflows++;
2655 if (val & XRXMAC_STATUS_RXOFLOW)
2656 mp->rx_overflows++;
2657
2658 val = nr64_mac(XMAC_FC_STAT);
2659 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
2660 mp->pause_off_state++;
2661 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
2662 mp->pause_on_state++;
2663 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
2664 mp->pause_received++;
2665 }
2666
2667 static void niu_bmac_interrupt(struct niu *np)
2668 {
2669 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
2670 u64 val;
2671
2672 val = nr64_mac(BTXMAC_STATUS);
2673 if (val & BTXMAC_STATUS_UNDERRUN)
2674 mp->tx_underflow_errors++;
2675 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
2676 mp->tx_max_pkt_size_errors++;
2677 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
2678 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
2679 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
2680 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
2681
2682 val = nr64_mac(BRXMAC_STATUS);
2683 if (val & BRXMAC_STATUS_OVERFLOW)
2684 mp->rx_overflows++;
2685 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
2686 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
2687 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
2688 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2689 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
2690 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2691 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
2692 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
2693
2694 val = nr64_mac(BMAC_CTRL_STATUS);
2695 if (val & BMAC_CTRL_STATUS_NOPAUSE)
2696 mp->pause_off_state++;
2697 if (val & BMAC_CTRL_STATUS_PAUSE)
2698 mp->pause_on_state++;
2699 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
2700 mp->pause_received++;
2701 }
2702
2703 static int niu_mac_interrupt(struct niu *np)
2704 {
2705 if (np->flags & NIU_FLAGS_XMAC)
2706 niu_xmac_interrupt(np);
2707 else
2708 niu_bmac_interrupt(np);
2709
2710 return 0;
2711 }
2712
2713 static void niu_log_device_error(struct niu *np, u64 stat)
2714 {
2715 dev_err(np->device, PFX "%s: Core device errors ( ",
2716 np->dev->name);
2717
2718 if (stat & SYS_ERR_MASK_META2)
2719 printk("META2 ");
2720 if (stat & SYS_ERR_MASK_META1)
2721 printk("META1 ");
2722 if (stat & SYS_ERR_MASK_PEU)
2723 printk("PEU ");
2724 if (stat & SYS_ERR_MASK_TXC)
2725 printk("TXC ");
2726 if (stat & SYS_ERR_MASK_RDMC)
2727 printk("RDMC ");
2728 if (stat & SYS_ERR_MASK_TDMC)
2729 printk("TDMC ");
2730 if (stat & SYS_ERR_MASK_ZCP)
2731 printk("ZCP ");
2732 if (stat & SYS_ERR_MASK_FFLP)
2733 printk("FFLP ");
2734 if (stat & SYS_ERR_MASK_IPP)
2735 printk("IPP ");
2736 if (stat & SYS_ERR_MASK_MAC)
2737 printk("MAC ");
2738 if (stat & SYS_ERR_MASK_SMX)
2739 printk("SMX ");
2740
2741 printk(")\n");
2742 }
2743
2744 static int niu_device_error(struct niu *np)
2745 {
2746 u64 stat = nr64(SYS_ERR_STAT);
2747
2748 dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
2749 np->dev->name, (unsigned long long) stat);
2750
2751 niu_log_device_error(np, stat);
2752
2753 return -ENODEV;
2754 }
2755
2756 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
2757 u64 v0, u64 v1, u64 v2)
2758 {
2759
2760 int i, err = 0;
2761
2762 lp->v0 = v0;
2763 lp->v1 = v1;
2764 lp->v2 = v2;
2765
2766 if (v1 & 0x00000000ffffffffULL) {
2767 u32 rx_vec = (v1 & 0xffffffff);
2768
2769 for (i = 0; i < np->num_rx_rings; i++) {
2770 struct rx_ring_info *rp = &np->rx_rings[i];
2771
2772 if (rx_vec & (1 << rp->rx_channel)) {
2773 int r = niu_rx_error(np, rp);
2774 if (r) {
2775 err = r;
2776 } else {
2777 if (!v0)
2778 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
2779 RX_DMA_CTL_STAT_MEX);
2780 }
2781 }
2782 }
2783 }
2784 if (v1 & 0x7fffffff00000000ULL) {
2785 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
2786
2787 for (i = 0; i < np->num_tx_rings; i++) {
2788 struct tx_ring_info *rp = &np->tx_rings[i];
2789
2790 if (tx_vec & (1 << rp->tx_channel)) {
2791 int r = niu_tx_error(np, rp);
2792 if (r)
2793 err = r;
2794 }
2795 }
2796 }
2797 if ((v0 | v1) & 0x8000000000000000ULL) {
2798 int r = niu_mif_interrupt(np);
2799 if (r)
2800 err = r;
2801 }
2802 if (v2) {
2803 if (v2 & 0x01ef) {
2804 int r = niu_mac_interrupt(np);
2805 if (r)
2806 err = r;
2807 }
2808 if (v2 & 0x0210) {
2809 int r = niu_device_error(np);
2810 if (r)
2811 err = r;
2812 }
2813 }
2814
2815 if (err)
2816 niu_enable_interrupts(np, 0);
2817
2818 return err;
2819 }
2820
2821 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
2822 int ldn)
2823 {
2824 struct rxdma_mailbox *mbox = rp->mbox;
2825 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2826
2827 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
2828 RX_DMA_CTL_STAT_RCRTO);
2829 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
2830
2831 niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
2832 np->dev->name, (unsigned long long) stat);
2833 }
2834
2835 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
2836 int ldn)
2837 {
2838 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
2839
2840 niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
2841 np->dev->name, (unsigned long long) rp->tx_cs);
2842 }
2843
2844 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
2845 {
2846 struct niu_parent *parent = np->parent;
2847 u32 rx_vec, tx_vec;
2848 int i;
2849
2850 tx_vec = (v0 >> 32);
2851 rx_vec = (v0 & 0xffffffff);
2852
2853 for (i = 0; i < np->num_rx_rings; i++) {
2854 struct rx_ring_info *rp = &np->rx_rings[i];
2855 int ldn = LDN_RXDMA(rp->rx_channel);
2856
2857 if (parent->ldg_map[ldn] != ldg)
2858 continue;
2859
2860 nw64(LD_IM0(ldn), LD_IM0_MASK);
2861 if (rx_vec & (1 << rp->rx_channel))
2862 niu_rxchan_intr(np, rp, ldn);
2863 }
2864
2865 for (i = 0; i < np->num_tx_rings; i++) {
2866 struct tx_ring_info *rp = &np->tx_rings[i];
2867 int ldn = LDN_TXDMA(rp->tx_channel);
2868
2869 if (parent->ldg_map[ldn] != ldg)
2870 continue;
2871
2872 nw64(LD_IM0(ldn), LD_IM0_MASK);
2873 if (tx_vec & (1 << rp->tx_channel))
2874 niu_txchan_intr(np, rp, ldn);
2875 }
2876 }
2877
2878 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
2879 u64 v0, u64 v1, u64 v2)
2880 {
2881 if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
2882 lp->v0 = v0;
2883 lp->v1 = v1;
2884 lp->v2 = v2;
2885 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
2886 __netif_rx_schedule(np->dev, &lp->napi);
2887 }
2888 }
2889
2890 static irqreturn_t niu_interrupt(int irq, void *dev_id)
2891 {
2892 struct niu_ldg *lp = dev_id;
2893 struct niu *np = lp->np;
2894 int ldg = lp->ldg_num;
2895 unsigned long flags;
2896 u64 v0, v1, v2;
2897
2898 if (netif_msg_intr(np))
2899 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
2900 lp, ldg);
2901
2902 spin_lock_irqsave(&np->lock, flags);
2903
2904 v0 = nr64(LDSV0(ldg));
2905 v1 = nr64(LDSV1(ldg));
2906 v2 = nr64(LDSV2(ldg));
2907
2908 if (netif_msg_intr(np))
2909 printk("v0[%llx] v1[%llx] v2[%llx]\n",
2910 (unsigned long long) v0,
2911 (unsigned long long) v1,
2912 (unsigned long long) v2);
2913
2914 if (unlikely(!v0 && !v1 && !v2)) {
2915 spin_unlock_irqrestore(&np->lock, flags);
2916 return IRQ_NONE;
2917 }
2918
2919 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
2920 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
2921 if (err)
2922 goto out;
2923 }
2924 if (likely(v0 & ~((u64)1 << LDN_MIF)))
2925 niu_schedule_napi(np, lp, v0, v1, v2);
2926 else
2927 niu_ldg_rearm(np, lp, 1);
2928 out:
2929 spin_unlock_irqrestore(&np->lock, flags);
2930
2931 return IRQ_HANDLED;
2932 }
2933
2934 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
2935 {
2936 if (rp->mbox) {
2937 np->ops->free_coherent(np->device,
2938 sizeof(struct rxdma_mailbox),
2939 rp->mbox, rp->mbox_dma);
2940 rp->mbox = NULL;
2941 }
2942 if (rp->rcr) {
2943 np->ops->free_coherent(np->device,
2944 MAX_RCR_RING_SIZE * sizeof(__le64),
2945 rp->rcr, rp->rcr_dma);
2946 rp->rcr = NULL;
2947 rp->rcr_table_size = 0;
2948 rp->rcr_index = 0;
2949 }
2950 if (rp->rbr) {
2951 niu_rbr_free(np, rp);
2952
2953 np->ops->free_coherent(np->device,
2954 MAX_RBR_RING_SIZE * sizeof(__le32),
2955 rp->rbr, rp->rbr_dma);
2956 rp->rbr = NULL;
2957 rp->rbr_table_size = 0;
2958 rp->rbr_index = 0;
2959 }
2960 kfree(rp->rxhash);
2961 rp->rxhash = NULL;
2962 }
2963
2964 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
2965 {
2966 if (rp->mbox) {
2967 np->ops->free_coherent(np->device,
2968 sizeof(struct txdma_mailbox),
2969 rp->mbox, rp->mbox_dma);
2970 rp->mbox = NULL;
2971 }
2972 if (rp->descr) {
2973 int i;
2974
2975 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
2976 if (rp->tx_buffs[i].skb)
2977 (void) release_tx_packet(np, rp, i);
2978 }
2979
2980 np->ops->free_coherent(np->device,
2981 MAX_TX_RING_SIZE * sizeof(__le64),
2982 rp->descr, rp->descr_dma);
2983 rp->descr = NULL;
2984 rp->pending = 0;
2985 rp->prod = 0;
2986 rp->cons = 0;
2987 rp->wrap_bit = 0;
2988 }
2989 }
2990
2991 static void niu_free_channels(struct niu *np)
2992 {
2993 int i;
2994
2995 if (np->rx_rings) {
2996 for (i = 0; i < np->num_rx_rings; i++) {
2997 struct rx_ring_info *rp = &np->rx_rings[i];
2998
2999 niu_free_rx_ring_info(np, rp);
3000 }
3001 kfree(np->rx_rings);
3002 np->rx_rings = NULL;
3003 np->num_rx_rings = 0;
3004 }
3005
3006 if (np->tx_rings) {
3007 for (i = 0; i < np->num_tx_rings; i++) {
3008 struct tx_ring_info *rp = &np->tx_rings[i];
3009
3010 niu_free_tx_ring_info(np, rp);
3011 }
3012 kfree(np->tx_rings);
3013 np->tx_rings = NULL;
3014 np->num_tx_rings = 0;
3015 }
3016 }
3017
3018 static int niu_alloc_rx_ring_info(struct niu *np,
3019 struct rx_ring_info *rp)
3020 {
3021 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
3022
3023 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
3024 GFP_KERNEL);
3025 if (!rp->rxhash)
3026 return -ENOMEM;
3027
3028 rp->mbox = np->ops->alloc_coherent(np->device,
3029 sizeof(struct rxdma_mailbox),
3030 &rp->mbox_dma, GFP_KERNEL);
3031 if (!rp->mbox)
3032 return -ENOMEM;
3033 if ((unsigned long)rp->mbox & (64UL - 1)) {
3034 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3035 "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
3036 return -EINVAL;
3037 }
3038
3039 rp->rcr = np->ops->alloc_coherent(np->device,
3040 MAX_RCR_RING_SIZE * sizeof(__le64),
3041 &rp->rcr_dma, GFP_KERNEL);
3042 if (!rp->rcr)
3043 return -ENOMEM;
3044 if ((unsigned long)rp->rcr & (64UL - 1)) {
3045 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3046 "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
3047 return -EINVAL;
3048 }
3049 rp->rcr_table_size = MAX_RCR_RING_SIZE;
3050 rp->rcr_index = 0;
3051
3052 rp->rbr = np->ops->alloc_coherent(np->device,
3053 MAX_RBR_RING_SIZE * sizeof(__le32),
3054 &rp->rbr_dma, GFP_KERNEL);
3055 if (!rp->rbr)
3056 return -ENOMEM;
3057 if ((unsigned long)rp->rbr & (64UL - 1)) {
3058 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3059 "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
3060 return -EINVAL;
3061 }
3062 rp->rbr_table_size = MAX_RBR_RING_SIZE;
3063 rp->rbr_index = 0;
3064 rp->rbr_pending = 0;
3065
3066 return 0;
3067 }
3068
3069 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
3070 {
3071 int mtu = np->dev->mtu;
3072
3073 /* These values are recommended by the HW designers for fair
3074 * utilization of DRR amongst the rings.
3075 */
3076 rp->max_burst = mtu + 32;
3077 if (rp->max_burst > 4096)
3078 rp->max_burst = 4096;
3079 }
3080
3081 static int niu_alloc_tx_ring_info(struct niu *np,
3082 struct tx_ring_info *rp)
3083 {
3084 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
3085
3086 rp->mbox = np->ops->alloc_coherent(np->device,
3087 sizeof(struct txdma_mailbox),
3088 &rp->mbox_dma, GFP_KERNEL);
3089 if (!rp->mbox)
3090 return -ENOMEM;
3091 if ((unsigned long)rp->mbox & (64UL - 1)) {
3092 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3093 "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
3094 return -EINVAL;
3095 }
3096
3097 rp->descr = np->ops->alloc_coherent(np->device,
3098 MAX_TX_RING_SIZE * sizeof(__le64),
3099 &rp->descr_dma, GFP_KERNEL);
3100 if (!rp->descr)
3101 return -ENOMEM;
3102 if ((unsigned long)rp->descr & (64UL - 1)) {
3103 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3104 "TXDMA descr table %p\n", np->dev->name, rp->descr);
3105 return -EINVAL;
3106 }
3107
3108 rp->pending = MAX_TX_RING_SIZE;
3109 rp->prod = 0;
3110 rp->cons = 0;
3111 rp->wrap_bit = 0;
3112
3113 /* XXX make these configurable... XXX */
3114 rp->mark_freq = rp->pending / 4;
3115
3116 niu_set_max_burst(np, rp);
3117
3118 return 0;
3119 }
3120
3121 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
3122 {
3123 u16 bss;
3124
3125 bss = min(PAGE_SHIFT, 15);
3126
3127 rp->rbr_block_size = 1 << bss;
3128 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
3129
3130 rp->rbr_sizes[0] = 256;
3131 rp->rbr_sizes[1] = 1024;
3132 if (np->dev->mtu > ETH_DATA_LEN) {
3133 switch (PAGE_SIZE) {
3134 case 4 * 1024:
3135 rp->rbr_sizes[2] = 4096;
3136 break;
3137
3138 default:
3139 rp->rbr_sizes[2] = 8192;
3140 break;
3141 }
3142 } else {
3143 rp->rbr_sizes[2] = 2048;
3144 }
3145 rp->rbr_sizes[3] = rp->rbr_block_size;
3146 }
3147
3148 static int niu_alloc_channels(struct niu *np)
3149 {
3150 struct niu_parent *parent = np->parent;
3151 int first_rx_channel, first_tx_channel;
3152 int i, port, err;
3153
3154 port = np->port;
3155 first_rx_channel = first_tx_channel = 0;
3156 for (i = 0; i < port; i++) {
3157 first_rx_channel += parent->rxchan_per_port[i];
3158 first_tx_channel += parent->txchan_per_port[i];
3159 }
3160
3161 np->num_rx_rings = parent->rxchan_per_port[port];
3162 np->num_tx_rings = parent->txchan_per_port[port];
3163
3164 np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
3165 GFP_KERNEL);
3166 err = -ENOMEM;
3167 if (!np->rx_rings)
3168 goto out_err;
3169
3170 for (i = 0; i < np->num_rx_rings; i++) {
3171 struct rx_ring_info *rp = &np->rx_rings[i];
3172
3173 rp->np = np;
3174 rp->rx_channel = first_rx_channel + i;
3175
3176 err = niu_alloc_rx_ring_info(np, rp);
3177 if (err)
3178 goto out_err;
3179
3180 niu_size_rbr(np, rp);
3181
3182 /* XXX better defaults, configurable, etc... XXX */
3183 rp->nonsyn_window = 64;
3184 rp->nonsyn_threshold = rp->rcr_table_size - 64;
3185 rp->syn_window = 64;
3186 rp->syn_threshold = rp->rcr_table_size - 64;
3187 rp->rcr_pkt_threshold = 16;
3188 rp->rcr_timeout = 8;
3189 rp->rbr_kick_thresh = RBR_REFILL_MIN;
3190 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
3191 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
3192
3193 err = niu_rbr_fill(np, rp, GFP_KERNEL);
3194 if (err)
3195 return err;
3196 }
3197
3198 np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
3199 GFP_KERNEL);
3200 err = -ENOMEM;
3201 if (!np->tx_rings)
3202 goto out_err;
3203
3204 for (i = 0; i < np->num_tx_rings; i++) {
3205 struct tx_ring_info *rp = &np->tx_rings[i];
3206
3207 rp->np = np;
3208 rp->tx_channel = first_tx_channel + i;
3209
3210 err = niu_alloc_tx_ring_info(np, rp);
3211 if (err)
3212 goto out_err;
3213 }
3214
3215 return 0;
3216
3217 out_err:
3218 niu_free_channels(np);
3219 return err;
3220 }
3221
3222 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
3223 {
3224 int limit = 1000;
3225
3226 while (--limit > 0) {
3227 u64 val = nr64(TX_CS(channel));
3228 if (val & TX_CS_SNG_STATE)
3229 return 0;
3230 }
3231 return -ENODEV;
3232 }
3233
3234 static int niu_tx_channel_stop(struct niu *np, int channel)
3235 {
3236 u64 val = nr64(TX_CS(channel));
3237
3238 val |= TX_CS_STOP_N_GO;
3239 nw64(TX_CS(channel), val);
3240
3241 return niu_tx_cs_sng_poll(np, channel);
3242 }
3243
3244 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
3245 {
3246 int limit = 1000;
3247
3248 while (--limit > 0) {
3249 u64 val = nr64(TX_CS(channel));
3250 if (!(val & TX_CS_RST))
3251 return 0;
3252 }
3253 return -ENODEV;
3254 }
3255
3256 static int niu_tx_channel_reset(struct niu *np, int channel)
3257 {
3258 u64 val = nr64(TX_CS(channel));
3259 int err;
3260
3261 val |= TX_CS_RST;
3262 nw64(TX_CS(channel), val);
3263
3264 err = niu_tx_cs_reset_poll(np, channel);
3265 if (!err)
3266 nw64(TX_RING_KICK(channel), 0);
3267
3268 return err;
3269 }
3270
3271 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
3272 {
3273 u64 val;
3274
3275 nw64(TX_LOG_MASK1(channel), 0);
3276 nw64(TX_LOG_VAL1(channel), 0);
3277 nw64(TX_LOG_MASK2(channel), 0);
3278 nw64(TX_LOG_VAL2(channel), 0);
3279 nw64(TX_LOG_PAGE_RELO1(channel), 0);
3280 nw64(TX_LOG_PAGE_RELO2(channel), 0);
3281 nw64(TX_LOG_PAGE_HDL(channel), 0);
3282
3283 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
3284 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
3285 nw64(TX_LOG_PAGE_VLD(channel), val);
3286
3287 /* XXX TXDMA 32bit mode? XXX */
3288
3289 return 0;
3290 }
3291
3292 static void niu_txc_enable_port(struct niu *np, int on)
3293 {
3294 unsigned long flags;
3295 u64 val, mask;
3296
3297 niu_lock_parent(np, flags);
3298 val = nr64(TXC_CONTROL);
3299 mask = (u64)1 << np->port;
3300 if (on) {
3301 val |= TXC_CONTROL_ENABLE | mask;
3302 } else {
3303 val &= ~mask;
3304 if ((val & ~TXC_CONTROL_ENABLE) == 0)
3305 val &= ~TXC_CONTROL_ENABLE;
3306 }
3307 nw64(TXC_CONTROL, val);
3308 niu_unlock_parent(np, flags);
3309 }
3310
3311 static void niu_txc_set_imask(struct niu *np, u64 imask)
3312 {
3313 unsigned long flags;
3314 u64 val;
3315
3316 niu_lock_parent(np, flags);
3317 val = nr64(TXC_INT_MASK);
3318 val &= ~TXC_INT_MASK_VAL(np->port);
3319 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
3320 niu_unlock_parent(np, flags);
3321 }
3322
3323 static void niu_txc_port_dma_enable(struct niu *np, int on)
3324 {
3325 u64 val = 0;
3326
3327 if (on) {
3328 int i;
3329
3330 for (i = 0; i < np->num_tx_rings; i++)
3331 val |= (1 << np->tx_rings[i].tx_channel);
3332 }
3333 nw64(TXC_PORT_DMA(np->port), val);
3334 }
3335
3336 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
3337 {
3338 int err, channel = rp->tx_channel;
3339 u64 val, ring_len;
3340
3341 err = niu_tx_channel_stop(np, channel);
3342 if (err)
3343 return err;
3344
3345 err = niu_tx_channel_reset(np, channel);
3346 if (err)
3347 return err;
3348
3349 err = niu_tx_channel_lpage_init(np, channel);
3350 if (err)
3351 return err;
3352
3353 nw64(TXC_DMA_MAX(channel), rp->max_burst);
3354 nw64(TX_ENT_MSK(channel), 0);
3355
3356 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
3357 TX_RNG_CFIG_STADDR)) {
3358 dev_err(np->device, PFX "%s: TX ring channel %d "
3359 "DMA addr (%llx) is not aligned.\n",
3360 np->dev->name, channel,
3361 (unsigned long long) rp->descr_dma);
3362 return -EINVAL;
3363 }
3364
3365 /* The length field in TX_RNG_CFIG is measured in 64-byte
3366 * blocks. rp->pending is the number of TX descriptors in
3367 * our ring, 8 bytes each, thus we divide by 8 bytes more
3368 * to get the proper value the chip wants.
3369 */
3370 ring_len = (rp->pending / 8);
3371
3372 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
3373 rp->descr_dma);
3374 nw64(TX_RNG_CFIG(channel), val);
3375
3376 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
3377 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
3378 dev_err(np->device, PFX "%s: TX ring channel %d "
3379 "MBOX addr (%llx) is has illegal bits.\n",
3380 np->dev->name, channel,
3381 (unsigned long long) rp->mbox_dma);
3382 return -EINVAL;
3383 }
3384 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
3385 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
3386
3387 nw64(TX_CS(channel), 0);
3388
3389 rp->last_pkt_cnt = 0;
3390
3391 return 0;
3392 }
3393
3394 static void niu_init_rdc_groups(struct niu *np)
3395 {
3396 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
3397 int i, first_table_num = tp->first_table_num;
3398
3399 for (i = 0; i < tp->num_tables; i++) {
3400 struct rdc_table *tbl = &tp->tables[i];
3401 int this_table = first_table_num + i;
3402 int slot;
3403
3404 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
3405 nw64(RDC_TBL(this_table, slot),
3406 tbl->rxdma_channel[slot]);
3407 }
3408
3409 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
3410 }
3411
3412 static void niu_init_drr_weight(struct niu *np)
3413 {
3414 int type = phy_decode(np->parent->port_phy, np->port);
3415 u64 val;
3416
3417 switch (type) {
3418 case PORT_TYPE_10G:
3419 val = PT_DRR_WEIGHT_DEFAULT_10G;
3420 break;
3421
3422 case PORT_TYPE_1G:
3423 default:
3424 val = PT_DRR_WEIGHT_DEFAULT_1G;
3425 break;
3426 }
3427 nw64(PT_DRR_WT(np->port), val);
3428 }
3429
3430 static int niu_init_hostinfo(struct niu *np)
3431 {
3432 struct niu_parent *parent = np->parent;
3433 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
3434 int i, err, num_alt = niu_num_alt_addr(np);
3435 int first_rdc_table = tp->first_table_num;
3436
3437 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
3438 if (err)
3439 return err;
3440
3441 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
3442 if (err)
3443 return err;
3444
3445 for (i = 0; i < num_alt; i++) {
3446 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
3447 if (err)
3448 return err;
3449 }
3450
3451 return 0;
3452 }
3453
3454 static int niu_rx_channel_reset(struct niu *np, int channel)
3455 {
3456 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
3457 RXDMA_CFIG1_RST, 1000, 10,
3458 "RXDMA_CFIG1");
3459 }
3460
3461 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
3462 {
3463 u64 val;
3464
3465 nw64(RX_LOG_MASK1(channel), 0);
3466 nw64(RX_LOG_VAL1(channel), 0);
3467 nw64(RX_LOG_MASK2(channel), 0);
3468 nw64(RX_LOG_VAL2(channel), 0);
3469 nw64(RX_LOG_PAGE_RELO1(channel), 0);
3470 nw64(RX_LOG_PAGE_RELO2(channel), 0);
3471 nw64(RX_LOG_PAGE_HDL(channel), 0);
3472
3473 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
3474 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
3475 nw64(RX_LOG_PAGE_VLD(channel), val);
3476
3477 return 0;
3478 }
3479
3480 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
3481 {
3482 u64 val;
3483
3484 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
3485 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
3486 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
3487 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
3488 nw64(RDC_RED_PARA(rp->rx_channel), val);
3489 }
3490
3491 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
3492 {
3493 u64 val = 0;
3494
3495 switch (rp->rbr_block_size) {
3496 case 4 * 1024:
3497 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
3498 break;
3499 case 8 * 1024:
3500 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
3501 break;
3502 case 16 * 1024:
3503 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
3504 break;
3505 case 32 * 1024:
3506 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
3507 break;
3508 default:
3509 return -EINVAL;
3510 }
3511 val |= RBR_CFIG_B_VLD2;
3512 switch (rp->rbr_sizes[2]) {
3513 case 2 * 1024:
3514 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
3515 break;
3516 case 4 * 1024:
3517 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
3518 break;
3519 case 8 * 1024:
3520 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
3521 break;
3522 case 16 * 1024:
3523 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
3524 break;
3525
3526 default:
3527 return -EINVAL;
3528 }
3529 val |= RBR_CFIG_B_VLD1;
3530 switch (rp->rbr_sizes[1]) {
3531 case 1 * 1024:
3532 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
3533 break;
3534 case 2 * 1024:
3535 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
3536 break;
3537 case 4 * 1024:
3538 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
3539 break;
3540 case 8 * 1024:
3541 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
3542 break;
3543
3544 default:
3545 return -EINVAL;
3546 }
3547 val |= RBR_CFIG_B_VLD0;
3548 switch (rp->rbr_sizes[0]) {
3549 case 256:
3550 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
3551 break;
3552 case 512:
3553 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
3554 break;
3555 case 1 * 1024:
3556 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
3557 break;
3558 case 2 * 1024:
3559 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
3560 break;
3561
3562 default:
3563 return -EINVAL;
3564 }
3565
3566 *ret = val;
3567 return 0;
3568 }
3569
3570 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
3571 {
3572 u64 val = nr64(RXDMA_CFIG1(channel));
3573 int limit;
3574
3575 if (on)
3576 val |= RXDMA_CFIG1_EN;
3577 else
3578 val &= ~RXDMA_CFIG1_EN;
3579 nw64(RXDMA_CFIG1(channel), val);
3580
3581 limit = 1000;
3582 while (--limit > 0) {
3583 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
3584 break;
3585 udelay(10);
3586 }
3587 if (limit <= 0)
3588 return -ENODEV;
3589 return 0;
3590 }
3591
3592 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
3593 {
3594 int err, channel = rp->rx_channel;
3595 u64 val;
3596
3597 err = niu_rx_channel_reset(np, channel);
3598 if (err)
3599 return err;
3600
3601 err = niu_rx_channel_lpage_init(np, channel);
3602 if (err)
3603 return err;
3604
3605 niu_rx_channel_wred_init(np, rp);
3606
3607 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
3608 nw64(RX_DMA_CTL_STAT(channel),
3609 (RX_DMA_CTL_STAT_MEX |
3610 RX_DMA_CTL_STAT_RCRTHRES |
3611 RX_DMA_CTL_STAT_RCRTO |
3612 RX_DMA_CTL_STAT_RBR_EMPTY));
3613 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
3614 nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
3615 nw64(RBR_CFIG_A(channel),
3616 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
3617 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
3618 err = niu_compute_rbr_cfig_b(rp, &val);
3619 if (err)
3620 return err;
3621 nw64(RBR_CFIG_B(channel), val);
3622 nw64(RCRCFIG_A(channel),
3623 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
3624 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
3625 nw64(RCRCFIG_B(channel),
3626 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
3627 RCRCFIG_B_ENTOUT |
3628 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
3629
3630 err = niu_enable_rx_channel(np, channel, 1);
3631 if (err)
3632 return err;
3633
3634 nw64(RBR_KICK(channel), rp->rbr_index);
3635
3636 val = nr64(RX_DMA_CTL_STAT(channel));
3637 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
3638 nw64(RX_DMA_CTL_STAT(channel), val);
3639
3640 return 0;
3641 }
3642
3643 static int niu_init_rx_channels(struct niu *np)
3644 {
3645 unsigned long flags;
3646 u64 seed = jiffies_64;
3647 int err, i;
3648
3649 niu_lock_parent(np, flags);
3650 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
3651 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
3652 niu_unlock_parent(np, flags);
3653
3654 /* XXX RXDMA 32bit mode? XXX */
3655
3656 niu_init_rdc_groups(np);
3657 niu_init_drr_weight(np);
3658
3659 err = niu_init_hostinfo(np);
3660 if (err)
3661 return err;
3662
3663 for (i = 0; i < np->num_rx_rings; i++) {
3664 struct rx_ring_info *rp = &np->rx_rings[i];
3665
3666 err = niu_init_one_rx_channel(np, rp);
3667 if (err)
3668 return err;
3669 }
3670
3671 return 0;
3672 }
3673
3674 static int niu_set_ip_frag_rule(struct niu *np)
3675 {
3676 struct niu_parent *parent = np->parent;
3677 struct niu_classifier *cp = &np->clas;
3678 struct niu_tcam_entry *tp;
3679 int index, err;
3680
3681 /* XXX fix this allocation scheme XXX */
3682 index = cp->tcam_index;
3683 tp = &parent->tcam[index];
3684
3685 /* Note that the noport bit is the same in both ipv4 and
3686 * ipv6 format TCAM entries.
3687 */
3688 memset(tp, 0, sizeof(*tp));
3689 tp->key[1] = TCAM_V4KEY1_NOPORT;
3690 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
3691 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
3692 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
3693 err = tcam_write(np, index, tp->key, tp->key_mask);
3694 if (err)
3695 return err;
3696 err = tcam_assoc_write(np, index, tp->assoc_data);
3697 if (err)
3698 return err;
3699
3700 return 0;
3701 }
3702
3703 static int niu_init_classifier_hw(struct niu *np)
3704 {
3705 struct niu_parent *parent = np->parent;
3706 struct niu_classifier *cp = &np->clas;
3707 int i, err;
3708
3709 nw64(H1POLY, cp->h1_init);
3710 nw64(H2POLY, cp->h2_init);
3711
3712 err = niu_init_hostinfo(np);
3713 if (err)
3714 return err;
3715
3716 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
3717 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
3718
3719 vlan_tbl_write(np, i, np->port,
3720 vp->vlan_pref, vp->rdc_num);
3721 }
3722
3723 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
3724 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
3725
3726 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
3727 ap->rdc_num, ap->mac_pref);
3728 if (err)
3729 return err;
3730 }
3731
3732 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
3733 int index = i - CLASS_CODE_USER_PROG1;
3734
3735 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
3736 if (err)
3737 return err;
3738 err = niu_set_flow_key(np, i, parent->flow_key[index]);
3739 if (err)
3740 return err;
3741 }
3742
3743 err = niu_set_ip_frag_rule(np);
3744 if (err)
3745 return err;
3746
3747 tcam_enable(np, 1);
3748
3749 return 0;
3750 }
3751
3752 static int niu_zcp_write(struct niu *np, int index, u64 *data)
3753 {
3754 nw64(ZCP_RAM_DATA0, data[0]);
3755 nw64(ZCP_RAM_DATA1, data[1]);
3756 nw64(ZCP_RAM_DATA2, data[2]);
3757 nw64(ZCP_RAM_DATA3, data[3]);
3758 nw64(ZCP_RAM_DATA4, data[4]);
3759 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
3760 nw64(ZCP_RAM_ACC,
3761 (ZCP_RAM_ACC_WRITE |
3762 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3763 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3764
3765 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3766 1000, 100);
3767 }
3768
3769 static int niu_zcp_read(struct niu *np, int index, u64 *data)
3770 {
3771 int err;
3772
3773 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3774 1000, 100);
3775 if (err) {
3776 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
3777 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3778 (unsigned long long) nr64(ZCP_RAM_ACC));
3779 return err;
3780 }
3781
3782 nw64(ZCP_RAM_ACC,
3783 (ZCP_RAM_ACC_READ |
3784 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3785 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3786
3787 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3788 1000, 100);
3789 if (err) {
3790 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
3791 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3792 (unsigned long long) nr64(ZCP_RAM_ACC));
3793 return err;
3794 }
3795
3796 data[0] = nr64(ZCP_RAM_DATA0);
3797 data[1] = nr64(ZCP_RAM_DATA1);
3798 data[2] = nr64(ZCP_RAM_DATA2);
3799 data[3] = nr64(ZCP_RAM_DATA3);
3800 data[4] = nr64(ZCP_RAM_DATA4);
3801
3802 return 0;
3803 }
3804
3805 static void niu_zcp_cfifo_reset(struct niu *np)
3806 {
3807 u64 val = nr64(RESET_CFIFO);
3808
3809 val |= RESET_CFIFO_RST(np->port);
3810 nw64(RESET_CFIFO, val);
3811 udelay(10);
3812
3813 val &= ~RESET_CFIFO_RST(np->port);
3814 nw64(RESET_CFIFO, val);
3815 }
3816
3817 static int niu_init_zcp(struct niu *np)
3818 {
3819 u64 data[5], rbuf[5];
3820 int i, max, err;
3821
3822 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3823 if (np->port == 0 || np->port == 1)
3824 max = ATLAS_P0_P1_CFIFO_ENTRIES;
3825 else
3826 max = ATLAS_P2_P3_CFIFO_ENTRIES;
3827 } else
3828 max = NIU_CFIFO_ENTRIES;
3829
3830 data[0] = 0;
3831 data[1] = 0;
3832 data[2] = 0;
3833 data[3] = 0;
3834 data[4] = 0;
3835
3836 for (i = 0; i < max; i++) {
3837 err = niu_zcp_write(np, i, data);
3838 if (err)
3839 return err;
3840 err = niu_zcp_read(np, i, rbuf);
3841 if (err)
3842 return err;
3843 }
3844
3845 niu_zcp_cfifo_reset(np);
3846 nw64(CFIFO_ECC(np->port), 0);
3847 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
3848 (void) nr64(ZCP_INT_STAT);
3849 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
3850
3851 return 0;
3852 }
3853
3854 static void niu_ipp_write(struct niu *np, int index, u64 *data)
3855 {
3856 u64 val = nr64_ipp(IPP_CFIG);
3857
3858 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
3859 nw64_ipp(IPP_DFIFO_WR_PTR, index);
3860 nw64_ipp(IPP_DFIFO_WR0, data[0]);
3861 nw64_ipp(IPP_DFIFO_WR1, data[1]);
3862 nw64_ipp(IPP_DFIFO_WR2, data[2]);
3863 nw64_ipp(IPP_DFIFO_WR3, data[3]);
3864 nw64_ipp(IPP_DFIFO_WR4, data[4]);
3865 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
3866 }
3867
3868 static void niu_ipp_read(struct niu *np, int index, u64 *data)
3869 {
3870 nw64_ipp(IPP_DFIFO_RD_PTR, index);
3871 data[0] = nr64_ipp(IPP_DFIFO_RD0);
3872 data[1] = nr64_ipp(IPP_DFIFO_RD1);
3873 data[2] = nr64_ipp(IPP_DFIFO_RD2);
3874 data[3] = nr64_ipp(IPP_DFIFO_RD3);
3875 data[4] = nr64_ipp(IPP_DFIFO_RD4);
3876 }
3877
3878 static int niu_ipp_reset(struct niu *np)
3879 {
3880 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
3881 1000, 100, "IPP_CFIG");
3882 }
3883
3884 static int niu_init_ipp(struct niu *np)
3885 {
3886 u64 data[5], rbuf[5], val;
3887 int i, max, err;
3888
3889 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3890 if (np->port == 0 || np->port == 1)
3891 max = ATLAS_P0_P1_DFIFO_ENTRIES;
3892 else
3893 max = ATLAS_P2_P3_DFIFO_ENTRIES;
3894 } else
3895 max = NIU_DFIFO_ENTRIES;
3896
3897 data[0] = 0;
3898 data[1] = 0;
3899 data[2] = 0;
3900 data[3] = 0;
3901 data[4] = 0;
3902
3903 for (i = 0; i < max; i++) {
3904 niu_ipp_write(np, i, data);
3905 niu_ipp_read(np, i, rbuf);
3906 }
3907
3908 (void) nr64_ipp(IPP_INT_STAT);
3909 (void) nr64_ipp(IPP_INT_STAT);
3910
3911 err = niu_ipp_reset(np);
3912 if (err)
3913 return err;
3914
3915 (void) nr64_ipp(IPP_PKT_DIS);
3916 (void) nr64_ipp(IPP_BAD_CS_CNT);
3917 (void) nr64_ipp(IPP_ECC);
3918
3919 (void) nr64_ipp(IPP_INT_STAT);
3920
3921 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
3922
3923 val = nr64_ipp(IPP_CFIG);
3924 val &= ~IPP_CFIG_IP_MAX_PKT;
3925 val |= (IPP_CFIG_IPP_ENABLE |
3926 IPP_CFIG_DFIFO_ECC_EN |
3927 IPP_CFIG_DROP_BAD_CRC |
3928 IPP_CFIG_CKSUM_EN |
3929 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
3930 nw64_ipp(IPP_CFIG, val);
3931
3932 return 0;
3933 }
3934
3935 static void niu_handle_led(struct niu *np, int status)
3936 {
3937 u64 val;
3938 val = nr64_mac(XMAC_CONFIG);
3939
3940 if ((np->flags & NIU_FLAGS_10G) != 0 &&
3941 (np->flags & NIU_FLAGS_FIBER) != 0) {
3942 if (status) {
3943 val |= XMAC_CONFIG_LED_POLARITY;
3944 val &= ~XMAC_CONFIG_FORCE_LED_ON;
3945 } else {
3946 val |= XMAC_CONFIG_FORCE_LED_ON;
3947 val &= ~XMAC_CONFIG_LED_POLARITY;
3948 }
3949 }
3950
3951 nw64_mac(XMAC_CONFIG, val);
3952 }
3953
3954 static void niu_init_xif_xmac(struct niu *np)
3955 {
3956 struct niu_link_config *lp = &np->link_config;
3957 u64 val;
3958
3959 val = nr64_mac(XMAC_CONFIG);
3960 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3961
3962 val |= XMAC_CONFIG_TX_OUTPUT_EN;
3963
3964 if (lp->loopback_mode == LOOPBACK_MAC) {
3965 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3966 val |= XMAC_CONFIG_LOOPBACK;
3967 } else {
3968 val &= ~XMAC_CONFIG_LOOPBACK;
3969 }
3970
3971 if (np->flags & NIU_FLAGS_10G) {
3972 val &= ~XMAC_CONFIG_LFS_DISABLE;
3973 } else {
3974 val |= XMAC_CONFIG_LFS_DISABLE;
3975 if (!(np->flags & NIU_FLAGS_FIBER))
3976 val |= XMAC_CONFIG_1G_PCS_BYPASS;
3977 else
3978 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
3979 }
3980
3981 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
3982
3983 if (lp->active_speed == SPEED_100)
3984 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
3985 else
3986 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
3987
3988 nw64_mac(XMAC_CONFIG, val);
3989
3990 val = nr64_mac(XMAC_CONFIG);
3991 val &= ~XMAC_CONFIG_MODE_MASK;
3992 if (np->flags & NIU_FLAGS_10G) {
3993 val |= XMAC_CONFIG_MODE_XGMII;
3994 } else {
3995 if (lp->active_speed == SPEED_100)
3996 val |= XMAC_CONFIG_MODE_MII;
3997 else
3998 val |= XMAC_CONFIG_MODE_GMII;
3999 }
4000
4001 nw64_mac(XMAC_CONFIG, val);
4002 }
4003
4004 static void niu_init_xif_bmac(struct niu *np)
4005 {
4006 struct niu_link_config *lp = &np->link_config;
4007 u64 val;
4008
4009 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
4010
4011 if (lp->loopback_mode == LOOPBACK_MAC)
4012 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
4013 else
4014 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
4015
4016 if (lp->active_speed == SPEED_1000)
4017 val |= BMAC_XIF_CONFIG_GMII_MODE;
4018 else
4019 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
4020
4021 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
4022 BMAC_XIF_CONFIG_LED_POLARITY);
4023
4024 if (!(np->flags & NIU_FLAGS_10G) &&
4025 !(np->flags & NIU_FLAGS_FIBER) &&
4026 lp->active_speed == SPEED_100)
4027 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
4028 else
4029 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
4030
4031 nw64_mac(BMAC_XIF_CONFIG, val);
4032 }
4033
4034 static void niu_init_xif(struct niu *np)
4035 {
4036 if (np->flags & NIU_FLAGS_XMAC)
4037 niu_init_xif_xmac(np);
4038 else
4039 niu_init_xif_bmac(np);
4040 }
4041
4042 static void niu_pcs_mii_reset(struct niu *np)
4043 {
4044 u64 val = nr64_pcs(PCS_MII_CTL);
4045 val |= PCS_MII_CTL_RST;
4046 nw64_pcs(PCS_MII_CTL, val);
4047 }
4048
4049 static void niu_xpcs_reset(struct niu *np)
4050 {
4051 u64 val = nr64_xpcs(XPCS_CONTROL1);
4052 val |= XPCS_CONTROL1_RESET;
4053 nw64_xpcs(XPCS_CONTROL1, val);
4054 }
4055
4056 static int niu_init_pcs(struct niu *np)
4057 {
4058 struct niu_link_config *lp = &np->link_config;
4059 u64 val;
4060
4061 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
4062 case NIU_FLAGS_FIBER:
4063 /* 1G fiber */
4064 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
4065 nw64_pcs(PCS_DPATH_MODE, 0);
4066 niu_pcs_mii_reset(np);
4067 break;
4068
4069 case NIU_FLAGS_10G:
4070 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
4071 if (!(np->flags & NIU_FLAGS_XMAC))
4072 return -EINVAL;
4073
4074 /* 10G copper or fiber */
4075 val = nr64_mac(XMAC_CONFIG);
4076 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4077 nw64_mac(XMAC_CONFIG, val);
4078
4079 niu_xpcs_reset(np);
4080
4081 val = nr64_xpcs(XPCS_CONTROL1);
4082 if (lp->loopback_mode == LOOPBACK_PHY)
4083 val |= XPCS_CONTROL1_LOOPBACK;
4084 else
4085 val &= ~XPCS_CONTROL1_LOOPBACK;
4086 nw64_xpcs(XPCS_CONTROL1, val);
4087
4088 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
4089 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
4090 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
4091 break;
4092
4093 case 0:
4094 /* 1G copper */
4095 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
4096 niu_pcs_mii_reset(np);
4097 break;
4098
4099 default:
4100 return -EINVAL;
4101 }
4102
4103 return 0;
4104 }
4105
4106 static int niu_reset_tx_xmac(struct niu *np)
4107 {
4108 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
4109 (XTXMAC_SW_RST_REG_RS |
4110 XTXMAC_SW_RST_SOFT_RST),
4111 1000, 100, "XTXMAC_SW_RST");
4112 }
4113
4114 static int niu_reset_tx_bmac(struct niu *np)
4115 {
4116 int limit;
4117
4118 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
4119 limit = 1000;
4120 while (--limit >= 0) {
4121 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
4122 break;
4123 udelay(100);
4124 }
4125 if (limit < 0) {
4126 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
4127 "BTXMAC_SW_RST[%llx]\n",
4128 np->port,
4129 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
4130 return -ENODEV;
4131 }
4132
4133 return 0;
4134 }
4135
4136 static int niu_reset_tx_mac(struct niu *np)
4137 {
4138 if (np->flags & NIU_FLAGS_XMAC)
4139 return niu_reset_tx_xmac(np);
4140 else
4141 return niu_reset_tx_bmac(np);
4142 }
4143
4144 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
4145 {
4146 u64 val;
4147
4148 val = nr64_mac(XMAC_MIN);
4149 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
4150 XMAC_MIN_RX_MIN_PKT_SIZE);
4151 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
4152 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
4153 nw64_mac(XMAC_MIN, val);
4154
4155 nw64_mac(XMAC_MAX, max);
4156
4157 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
4158
4159 val = nr64_mac(XMAC_IPG);
4160 if (np->flags & NIU_FLAGS_10G) {
4161 val &= ~XMAC_IPG_IPG_XGMII;
4162 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
4163 } else {
4164 val &= ~XMAC_IPG_IPG_MII_GMII;
4165 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
4166 }
4167 nw64_mac(XMAC_IPG, val);
4168
4169 val = nr64_mac(XMAC_CONFIG);
4170 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
4171 XMAC_CONFIG_STRETCH_MODE |
4172 XMAC_CONFIG_VAR_MIN_IPG_EN |
4173 XMAC_CONFIG_TX_ENABLE);
4174 nw64_mac(XMAC_CONFIG, val);
4175
4176 nw64_mac(TXMAC_FRM_CNT, 0);
4177 nw64_mac(TXMAC_BYTE_CNT, 0);
4178 }
4179
4180 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
4181 {
4182 u64 val;
4183
4184 nw64_mac(BMAC_MIN_FRAME, min);
4185 nw64_mac(BMAC_MAX_FRAME, max);
4186
4187 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
4188 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
4189 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
4190
4191 val = nr64_mac(BTXMAC_CONFIG);
4192 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
4193 BTXMAC_CONFIG_ENABLE);
4194 nw64_mac(BTXMAC_CONFIG, val);
4195 }
4196
4197 static void niu_init_tx_mac(struct niu *np)
4198 {
4199 u64 min, max;
4200
4201 min = 64;
4202 if (np->dev->mtu > ETH_DATA_LEN)
4203 max = 9216;
4204 else
4205 max = 1522;
4206
4207 /* The XMAC_MIN register only accepts values for TX min which
4208 * have the low 3 bits cleared.
4209 */
4210 BUILD_BUG_ON(min & 0x7);
4211
4212 if (np->flags & NIU_FLAGS_XMAC)
4213 niu_init_tx_xmac(np, min, max);
4214 else
4215 niu_init_tx_bmac(np, min, max);
4216 }
4217
4218 static int niu_reset_rx_xmac(struct niu *np)
4219 {
4220 int limit;
4221
4222 nw64_mac(XRXMAC_SW_RST,
4223 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
4224 limit = 1000;
4225 while (--limit >= 0) {
4226 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
4227 XRXMAC_SW_RST_SOFT_RST)))
4228 break;
4229 udelay(100);
4230 }
4231 if (limit < 0) {
4232 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
4233 "XRXMAC_SW_RST[%llx]\n",
4234 np->port,
4235 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
4236 return -ENODEV;
4237 }
4238
4239 return 0;
4240 }
4241
4242 static int niu_reset_rx_bmac(struct niu *np)
4243 {
4244 int limit;
4245
4246 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
4247 limit = 1000;
4248 while (--limit >= 0) {
4249 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
4250 break;
4251 udelay(100);
4252 }
4253 if (limit < 0) {
4254 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
4255 "BRXMAC_SW_RST[%llx]\n",
4256 np->port,
4257 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
4258 return -ENODEV;
4259 }
4260
4261 return 0;
4262 }
4263
4264 static int niu_reset_rx_mac(struct niu *np)
4265 {
4266 if (np->flags & NIU_FLAGS_XMAC)
4267 return niu_reset_rx_xmac(np);
4268 else
4269 return niu_reset_rx_bmac(np);
4270 }
4271
4272 static void niu_init_rx_xmac(struct niu *np)
4273 {
4274 struct niu_parent *parent = np->parent;
4275 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4276 int first_rdc_table = tp->first_table_num;
4277 unsigned long i;
4278 u64 val;
4279
4280 nw64_mac(XMAC_ADD_FILT0, 0);
4281 nw64_mac(XMAC_ADD_FILT1, 0);
4282 nw64_mac(XMAC_ADD_FILT2, 0);
4283 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
4284 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
4285 for (i = 0; i < MAC_NUM_HASH; i++)
4286 nw64_mac(XMAC_HASH_TBL(i), 0);
4287 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
4288 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4289 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4290
4291 val = nr64_mac(XMAC_CONFIG);
4292 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
4293 XMAC_CONFIG_PROMISCUOUS |
4294 XMAC_CONFIG_PROMISC_GROUP |
4295 XMAC_CONFIG_ERR_CHK_DIS |
4296 XMAC_CONFIG_RX_CRC_CHK_DIS |
4297 XMAC_CONFIG_RESERVED_MULTICAST |
4298 XMAC_CONFIG_RX_CODEV_CHK_DIS |
4299 XMAC_CONFIG_ADDR_FILTER_EN |
4300 XMAC_CONFIG_RCV_PAUSE_ENABLE |
4301 XMAC_CONFIG_STRIP_CRC |
4302 XMAC_CONFIG_PASS_FLOW_CTRL |
4303 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
4304 val |= (XMAC_CONFIG_HASH_FILTER_EN);
4305 nw64_mac(XMAC_CONFIG, val);
4306
4307 nw64_mac(RXMAC_BT_CNT, 0);
4308 nw64_mac(RXMAC_BC_FRM_CNT, 0);
4309 nw64_mac(RXMAC_MC_FRM_CNT, 0);
4310 nw64_mac(RXMAC_FRAG_CNT, 0);
4311 nw64_mac(RXMAC_HIST_CNT1, 0);
4312 nw64_mac(RXMAC_HIST_CNT2, 0);
4313 nw64_mac(RXMAC_HIST_CNT3, 0);
4314 nw64_mac(RXMAC_HIST_CNT4, 0);
4315 nw64_mac(RXMAC_HIST_CNT5, 0);
4316 nw64_mac(RXMAC_HIST_CNT6, 0);
4317 nw64_mac(RXMAC_HIST_CNT7, 0);
4318 nw64_mac(RXMAC_MPSZER_CNT, 0);
4319 nw64_mac(RXMAC_CRC_ER_CNT, 0);
4320 nw64_mac(RXMAC_CD_VIO_CNT, 0);
4321 nw64_mac(LINK_FAULT_CNT, 0);
4322 }
4323
4324 static void niu_init_rx_bmac(struct niu *np)
4325 {
4326 struct niu_parent *parent = np->parent;
4327 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4328 int first_rdc_table = tp->first_table_num;
4329 unsigned long i;
4330 u64 val;
4331
4332 nw64_mac(BMAC_ADD_FILT0, 0);
4333 nw64_mac(BMAC_ADD_FILT1, 0);
4334 nw64_mac(BMAC_ADD_FILT2, 0);
4335 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
4336 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
4337 for (i = 0; i < MAC_NUM_HASH; i++)
4338 nw64_mac(BMAC_HASH_TBL(i), 0);
4339 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4340 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4341 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
4342
4343 val = nr64_mac(BRXMAC_CONFIG);
4344 val &= ~(BRXMAC_CONFIG_ENABLE |
4345 BRXMAC_CONFIG_STRIP_PAD |
4346 BRXMAC_CONFIG_STRIP_FCS |
4347 BRXMAC_CONFIG_PROMISC |
4348 BRXMAC_CONFIG_PROMISC_GRP |
4349 BRXMAC_CONFIG_ADDR_FILT_EN |
4350 BRXMAC_CONFIG_DISCARD_DIS);
4351 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
4352 nw64_mac(BRXMAC_CONFIG, val);
4353
4354 val = nr64_mac(BMAC_ADDR_CMPEN);
4355 val |= BMAC_ADDR_CMPEN_EN0;
4356 nw64_mac(BMAC_ADDR_CMPEN, val);
4357 }
4358
4359 static void niu_init_rx_mac(struct niu *np)
4360 {
4361 niu_set_primary_mac(np, np->dev->dev_addr);
4362
4363 if (np->flags & NIU_FLAGS_XMAC)
4364 niu_init_rx_xmac(np);
4365 else
4366 niu_init_rx_bmac(np);
4367 }
4368
4369 static void niu_enable_tx_xmac(struct niu *np, int on)
4370 {
4371 u64 val = nr64_mac(XMAC_CONFIG);
4372
4373 if (on)
4374 val |= XMAC_CONFIG_TX_ENABLE;
4375 else
4376 val &= ~XMAC_CONFIG_TX_ENABLE;
4377 nw64_mac(XMAC_CONFIG, val);
4378 }
4379
4380 static void niu_enable_tx_bmac(struct niu *np, int on)
4381 {
4382 u64 val = nr64_mac(BTXMAC_CONFIG);
4383
4384 if (on)
4385 val |= BTXMAC_CONFIG_ENABLE;
4386 else
4387 val &= ~BTXMAC_CONFIG_ENABLE;
4388 nw64_mac(BTXMAC_CONFIG, val);
4389 }
4390
4391 static void niu_enable_tx_mac(struct niu *np, int on)
4392 {
4393 if (np->flags & NIU_FLAGS_XMAC)
4394 niu_enable_tx_xmac(np, on);
4395 else
4396 niu_enable_tx_bmac(np, on);
4397 }
4398
4399 static void niu_enable_rx_xmac(struct niu *np, int on)
4400 {
4401 u64 val = nr64_mac(XMAC_CONFIG);
4402
4403 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
4404 XMAC_CONFIG_PROMISCUOUS);
4405
4406 if (np->flags & NIU_FLAGS_MCAST)
4407 val |= XMAC_CONFIG_HASH_FILTER_EN;
4408 if (np->flags & NIU_FLAGS_PROMISC)
4409 val |= XMAC_CONFIG_PROMISCUOUS;
4410
4411 if (on)
4412 val |= XMAC_CONFIG_RX_MAC_ENABLE;
4413 else
4414 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
4415 nw64_mac(XMAC_CONFIG, val);
4416 }
4417
4418 static void niu_enable_rx_bmac(struct niu *np, int on)
4419 {
4420 u64 val = nr64_mac(BRXMAC_CONFIG);
4421
4422 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
4423 BRXMAC_CONFIG_PROMISC);
4424
4425 if (np->flags & NIU_FLAGS_MCAST)
4426 val |= BRXMAC_CONFIG_HASH_FILT_EN;
4427 if (np->flags & NIU_FLAGS_PROMISC)
4428 val |= BRXMAC_CONFIG_PROMISC;
4429
4430 if (on)
4431 val |= BRXMAC_CONFIG_ENABLE;
4432 else
4433 val &= ~BRXMAC_CONFIG_ENABLE;
4434 nw64_mac(BRXMAC_CONFIG, val);
4435 }
4436
4437 static void niu_enable_rx_mac(struct niu *np, int on)
4438 {
4439 if (np->flags & NIU_FLAGS_XMAC)
4440 niu_enable_rx_xmac(np, on);
4441 else
4442 niu_enable_rx_bmac(np, on);
4443 }
4444
4445 static int niu_init_mac(struct niu *np)
4446 {
4447 int err;
4448
4449 niu_init_xif(np);
4450 err = niu_init_pcs(np);
4451 if (err)
4452 return err;
4453
4454 err = niu_reset_tx_mac(np);
4455 if (err)
4456 return err;
4457 niu_init_tx_mac(np);
4458 err = niu_reset_rx_mac(np);
4459 if (err)
4460 return err;
4461 niu_init_rx_mac(np);
4462
4463 /* This looks hookey but the RX MAC reset we just did will
4464 * undo some of the state we setup in niu_init_tx_mac() so we
4465 * have to call it again. In particular, the RX MAC reset will
4466 * set the XMAC_MAX register back to it's default value.
4467 */
4468 niu_init_tx_mac(np);
4469 niu_enable_tx_mac(np, 1);
4470
4471 niu_enable_rx_mac(np, 1);
4472
4473 return 0;
4474 }
4475
4476 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4477 {
4478 (void) niu_tx_channel_stop(np, rp->tx_channel);
4479 }
4480
4481 static void niu_stop_tx_channels(struct niu *np)
4482 {
4483 int i;
4484
4485 for (i = 0; i < np->num_tx_rings; i++) {
4486 struct tx_ring_info *rp = &np->tx_rings[i];
4487
4488 niu_stop_one_tx_channel(np, rp);
4489 }
4490 }
4491
4492 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4493 {
4494 (void) niu_tx_channel_reset(np, rp->tx_channel);
4495 }
4496
4497 static void niu_reset_tx_channels(struct niu *np)
4498 {
4499 int i;
4500
4501 for (i = 0; i < np->num_tx_rings; i++) {
4502 struct tx_ring_info *rp = &np->tx_rings[i];
4503
4504 niu_reset_one_tx_channel(np, rp);
4505 }
4506 }
4507
4508 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4509 {
4510 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
4511 }
4512
4513 static void niu_stop_rx_channels(struct niu *np)
4514 {
4515 int i;
4516
4517 for (i = 0; i < np->num_rx_rings; i++) {
4518 struct rx_ring_info *rp = &np->rx_rings[i];
4519
4520 niu_stop_one_rx_channel(np, rp);
4521 }
4522 }
4523
4524 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4525 {
4526 int channel = rp->rx_channel;
4527
4528 (void) niu_rx_channel_reset(np, channel);
4529 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
4530 nw64(RX_DMA_CTL_STAT(channel), 0);
4531 (void) niu_enable_rx_channel(np, channel, 0);
4532 }
4533
4534 static void niu_reset_rx_channels(struct niu *np)
4535 {
4536 int i;
4537
4538 for (i = 0; i < np->num_rx_rings; i++) {
4539 struct rx_ring_info *rp = &np->rx_rings[i];
4540
4541 niu_reset_one_rx_channel(np, rp);
4542 }
4543 }
4544
4545 static void niu_disable_ipp(struct niu *np)
4546 {
4547 u64 rd, wr, val;
4548 int limit;
4549
4550 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4551 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4552 limit = 100;
4553 while (--limit >= 0 && (rd != wr)) {
4554 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4555 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4556 }
4557 if (limit < 0 &&
4558 (rd != 0 && wr != 1)) {
4559 dev_err(np->device, PFX "%s: IPP would not quiesce, "
4560 "rd_ptr[%llx] wr_ptr[%llx]\n",
4561 np->dev->name,
4562 (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
4563 (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
4564 }
4565
4566 val = nr64_ipp(IPP_CFIG);
4567 val &= ~(IPP_CFIG_IPP_ENABLE |
4568 IPP_CFIG_DFIFO_ECC_EN |
4569 IPP_CFIG_DROP_BAD_CRC |
4570 IPP_CFIG_CKSUM_EN);
4571 nw64_ipp(IPP_CFIG, val);
4572
4573 (void) niu_ipp_reset(np);
4574 }
4575
4576 static int niu_init_hw(struct niu *np)
4577 {
4578 int i, err;
4579
4580 niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
4581 niu_txc_enable_port(np, 1);
4582 niu_txc_port_dma_enable(np, 1);
4583 niu_txc_set_imask(np, 0);
4584
4585 niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
4586 for (i = 0; i < np->num_tx_rings; i++) {
4587 struct tx_ring_info *rp = &np->tx_rings[i];
4588
4589 err = niu_init_one_tx_channel(np, rp);
4590 if (err)
4591 return err;
4592 }
4593
4594 niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
4595 err = niu_init_rx_channels(np);
4596 if (err)
4597 goto out_uninit_tx_channels;
4598
4599 niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
4600 err = niu_init_classifier_hw(np);
4601 if (err)
4602 goto out_uninit_rx_channels;
4603
4604 niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
4605 err = niu_init_zcp(np);
4606 if (err)
4607 goto out_uninit_rx_channels;
4608
4609 niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
4610 err = niu_init_ipp(np);
4611 if (err)
4612 goto out_uninit_rx_channels;
4613
4614 niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
4615 err = niu_init_mac(np);
4616 if (err)
4617 goto out_uninit_ipp;
4618
4619 return 0;
4620
4621 out_uninit_ipp:
4622 niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
4623 niu_disable_ipp(np);
4624
4625 out_uninit_rx_channels:
4626 niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
4627 niu_stop_rx_channels(np);
4628 niu_reset_rx_channels(np);
4629
4630 out_uninit_tx_channels:
4631 niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
4632 niu_stop_tx_channels(np);
4633 niu_reset_tx_channels(np);
4634
4635 return err;
4636 }
4637
4638 static void niu_stop_hw(struct niu *np)
4639 {
4640 niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
4641 niu_enable_interrupts(np, 0);
4642
4643 niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
4644 niu_enable_rx_mac(np, 0);
4645
4646 niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
4647 niu_disable_ipp(np);
4648
4649 niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
4650 niu_stop_tx_channels(np);
4651
4652 niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
4653 niu_stop_rx_channels(np);
4654
4655 niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
4656 niu_reset_tx_channels(np);
4657
4658 niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
4659 niu_reset_rx_channels(np);
4660 }
4661
4662 static int niu_request_irq(struct niu *np)
4663 {
4664 int i, j, err;
4665
4666 err = 0;
4667 for (i = 0; i < np->num_ldg; i++) {
4668 struct niu_ldg *lp = &np->ldg[i];
4669
4670 err = request_irq(lp->irq, niu_interrupt,
4671 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
4672 np->dev->name, lp);
4673 if (err)
4674 goto out_free_irqs;
4675
4676 }
4677
4678 return 0;
4679
4680 out_free_irqs:
4681 for (j = 0; j < i; j++) {
4682 struct niu_ldg *lp = &np->ldg[j];
4683
4684 free_irq(lp->irq, lp);
4685 }
4686 return err;
4687 }
4688
4689 static void niu_free_irq(struct niu *np)
4690 {
4691 int i;
4692
4693 for (i = 0; i < np->num_ldg; i++) {
4694 struct niu_ldg *lp = &np->ldg[i];
4695
4696 free_irq(lp->irq, lp);
4697 }
4698 }
4699
4700 static void niu_enable_napi(struct niu *np)
4701 {
4702 int i;
4703
4704 for (i = 0; i < np->num_ldg; i++)
4705 napi_enable(&np->ldg[i].napi);
4706 }
4707
4708 static void niu_disable_napi(struct niu *np)
4709 {
4710 int i;
4711
4712 for (i = 0; i < np->num_ldg; i++)
4713 napi_disable(&np->ldg[i].napi);
4714 }
4715
4716 static int niu_open(struct net_device *dev)
4717 {
4718 struct niu *np = netdev_priv(dev);
4719 int err;
4720
4721 netif_carrier_off(dev);
4722
4723 err = niu_alloc_channels(np);
4724 if (err)
4725 goto out_err;
4726
4727 err = niu_enable_interrupts(np, 0);
4728 if (err)
4729 goto out_free_channels;
4730
4731 err = niu_request_irq(np);
4732 if (err)
4733 goto out_free_channels;
4734
4735 niu_enable_napi(np);
4736
4737 spin_lock_irq(&np->lock);
4738
4739 err = niu_init_hw(np);
4740 if (!err) {
4741 init_timer(&np->timer);
4742 np->timer.expires = jiffies + HZ;
4743 np->timer.data = (unsigned long) np;
4744 np->timer.function = niu_timer;
4745
4746 err = niu_enable_interrupts(np, 1);
4747 if (err)
4748 niu_stop_hw(np);
4749 }
4750
4751 spin_unlock_irq(&np->lock);
4752
4753 if (err) {
4754 niu_disable_napi(np);
4755 goto out_free_irq;
4756 }
4757
4758 netif_start_queue(dev);
4759
4760 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
4761 netif_carrier_on(dev);
4762
4763 add_timer(&np->timer);
4764
4765 return 0;
4766
4767 out_free_irq:
4768 niu_free_irq(np);
4769
4770 out_free_channels:
4771 niu_free_channels(np);
4772
4773 out_err:
4774 return err;
4775 }
4776
4777 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
4778 {
4779 cancel_work_sync(&np->reset_task);
4780
4781 niu_disable_napi(np);
4782 netif_stop_queue(dev);
4783
4784 del_timer_sync(&np->timer);
4785
4786 spin_lock_irq(&np->lock);
4787
4788 niu_stop_hw(np);
4789
4790 spin_unlock_irq(&np->lock);
4791 }
4792
4793 static int niu_close(struct net_device *dev)
4794 {
4795 struct niu *np = netdev_priv(dev);
4796
4797 niu_full_shutdown(np, dev);
4798
4799 niu_free_irq(np);
4800
4801 niu_free_channels(np);
4802
4803 niu_handle_led(np, 0);
4804
4805 return 0;
4806 }
4807
4808 static void niu_sync_xmac_stats(struct niu *np)
4809 {
4810 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
4811
4812 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
4813 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
4814
4815 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
4816 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
4817 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
4818 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
4819 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
4820 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
4821 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
4822 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
4823 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
4824 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
4825 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
4826 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
4827 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
4828 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
4829 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
4830 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
4831 }
4832
4833 static void niu_sync_bmac_stats(struct niu *np)
4834 {
4835 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4836
4837 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
4838 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
4839
4840 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
4841 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4842 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4843 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
4844 }
4845
4846 static void niu_sync_mac_stats(struct niu *np)
4847 {
4848 if (np->flags & NIU_FLAGS_XMAC)
4849 niu_sync_xmac_stats(np);
4850 else
4851 niu_sync_bmac_stats(np);
4852 }
4853
4854 static void niu_get_rx_stats(struct niu *np)
4855 {
4856 unsigned long pkts, dropped, errors, bytes;
4857 int i;
4858
4859 pkts = dropped = errors = bytes = 0;
4860 for (i = 0; i < np->num_rx_rings; i++) {
4861 struct rx_ring_info *rp = &np->rx_rings[i];
4862
4863 pkts += rp->rx_packets;
4864 bytes += rp->rx_bytes;
4865 dropped += rp->rx_dropped;
4866 errors += rp->rx_errors;
4867 }
4868 np->net_stats.rx_packets = pkts;
4869 np->net_stats.rx_bytes = bytes;
4870 np->net_stats.rx_dropped = dropped;
4871 np->net_stats.rx_errors = errors;
4872 }
4873
4874 static void niu_get_tx_stats(struct niu *np)
4875 {
4876 unsigned long pkts, errors, bytes;
4877 int i;
4878
4879 pkts = errors = bytes = 0;
4880 for (i = 0; i < np->num_tx_rings; i++) {
4881 struct tx_ring_info *rp = &np->tx_rings[i];
4882
4883 pkts += rp->tx_packets;
4884 bytes += rp->tx_bytes;
4885 errors += rp->tx_errors;
4886 }
4887 np->net_stats.tx_packets = pkts;
4888 np->net_stats.tx_bytes = bytes;
4889 np->net_stats.tx_errors = errors;
4890 }
4891
4892 static struct net_device_stats *niu_get_stats(struct net_device *dev)
4893 {
4894 struct niu *np = netdev_priv(dev);
4895
4896 niu_get_rx_stats(np);
4897 niu_get_tx_stats(np);
4898
4899 return &np->net_stats;
4900 }
4901
4902 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
4903 {
4904 int i;
4905
4906 for (i = 0; i < 16; i++)
4907 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
4908 }
4909
4910 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
4911 {
4912 int i;
4913
4914 for (i = 0; i < 16; i++)
4915 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
4916 }
4917
4918 static void niu_load_hash(struct niu *np, u16 *hash)
4919 {
4920 if (np->flags & NIU_FLAGS_XMAC)
4921 niu_load_hash_xmac(np, hash);
4922 else
4923 niu_load_hash_bmac(np, hash);
4924 }
4925
4926 static void niu_set_rx_mode(struct net_device *dev)
4927 {
4928 struct niu *np = netdev_priv(dev);
4929 int i, alt_cnt, err;
4930 struct dev_addr_list *addr;
4931 unsigned long flags;
4932 u16 hash[16] = { 0, };
4933
4934 spin_lock_irqsave(&np->lock, flags);
4935 niu_enable_rx_mac(np, 0);
4936
4937 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
4938 if (dev->flags & IFF_PROMISC)
4939 np->flags |= NIU_FLAGS_PROMISC;
4940 if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
4941 np->flags |= NIU_FLAGS_MCAST;
4942
4943 alt_cnt = dev->uc_count;
4944 if (alt_cnt > niu_num_alt_addr(np)) {
4945 alt_cnt = 0;
4946 np->flags |= NIU_FLAGS_PROMISC;
4947 }
4948
4949 if (alt_cnt) {
4950 int index = 0;
4951
4952 for (addr = dev->uc_list; addr; addr = addr->next) {
4953 err = niu_set_alt_mac(np, index,
4954 addr->da_addr);
4955 if (err)
4956 printk(KERN_WARNING PFX "%s: Error %d "
4957 "adding alt mac %d\n",
4958 dev->name, err, index);
4959 err = niu_enable_alt_mac(np, index, 1);
4960 if (err)
4961 printk(KERN_WARNING PFX "%s: Error %d "
4962 "enabling alt mac %d\n",
4963 dev->name, err, index);
4964
4965 index++;
4966 }
4967 } else {
4968 for (i = 0; i < niu_num_alt_addr(np); i++) {
4969 err = niu_enable_alt_mac(np, i, 0);
4970 if (err)
4971 printk(KERN_WARNING PFX "%s: Error %d "
4972 "disabling alt mac %d\n",
4973 dev->name, err, i);
4974 }
4975 }
4976 if (dev->flags & IFF_ALLMULTI) {
4977 for (i = 0; i < 16; i++)
4978 hash[i] = 0xffff;
4979 } else if (dev->mc_count > 0) {
4980 for (addr = dev->mc_list; addr; addr = addr->next) {
4981 u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
4982
4983 crc >>= 24;
4984 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
4985 }
4986 }
4987
4988 if (np->flags & NIU_FLAGS_MCAST)
4989 niu_load_hash(np, hash);
4990
4991 niu_enable_rx_mac(np, 1);
4992 spin_unlock_irqrestore(&np->lock, flags);
4993 }
4994
4995 static int niu_set_mac_addr(struct net_device *dev, void *p)
4996 {
4997 struct niu *np = netdev_priv(dev);
4998 struct sockaddr *addr = p;
4999 unsigned long flags;
5000
5001 if (!is_valid_ether_addr(addr->sa_data))
5002 return -EINVAL;
5003
5004 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
5005
5006 if (!netif_running(dev))
5007 return 0;
5008
5009 spin_lock_irqsave(&np->lock, flags);
5010 niu_enable_rx_mac(np, 0);
5011 niu_set_primary_mac(np, dev->dev_addr);
5012 niu_enable_rx_mac(np, 1);
5013 spin_unlock_irqrestore(&np->lock, flags);
5014
5015 return 0;
5016 }
5017
5018 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
5019 {
5020 return -EOPNOTSUPP;
5021 }
5022
5023 static void niu_netif_stop(struct niu *np)
5024 {
5025 np->dev->trans_start = jiffies; /* prevent tx timeout */
5026
5027 niu_disable_napi(np);
5028
5029 netif_tx_disable(np->dev);
5030 }
5031
5032 static void niu_netif_start(struct niu *np)
5033 {
5034 /* NOTE: unconditional netif_wake_queue is only appropriate
5035 * so long as all callers are assured to have free tx slots
5036 * (such as after niu_init_hw).
5037 */
5038 netif_wake_queue(np->dev);
5039
5040 niu_enable_napi(np);
5041
5042 niu_enable_interrupts(np, 1);
5043 }
5044
5045 static void niu_reset_task(struct work_struct *work)
5046 {
5047 struct niu *np = container_of(work, struct niu, reset_task);
5048 unsigned long flags;
5049 int err;
5050
5051 spin_lock_irqsave(&np->lock, flags);
5052 if (!netif_running(np->dev)) {
5053 spin_unlock_irqrestore(&np->lock, flags);
5054 return;
5055 }
5056
5057 spin_unlock_irqrestore(&np->lock, flags);
5058
5059 del_timer_sync(&np->timer);
5060
5061 niu_netif_stop(np);
5062
5063 spin_lock_irqsave(&np->lock, flags);
5064
5065 niu_stop_hw(np);
5066
5067 err = niu_init_hw(np);
5068 if (!err) {
5069 np->timer.expires = jiffies + HZ;
5070 add_timer(&np->timer);
5071 niu_netif_start(np);
5072 }
5073
5074 spin_unlock_irqrestore(&np->lock, flags);
5075 }
5076
5077 static void niu_tx_timeout(struct net_device *dev)
5078 {
5079 struct niu *np = netdev_priv(dev);
5080
5081 dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
5082 dev->name);
5083
5084 schedule_work(&np->reset_task);
5085 }
5086
5087 static void niu_set_txd(struct tx_ring_info *rp, int index,
5088 u64 mapping, u64 len, u64 mark,
5089 u64 n_frags)
5090 {
5091 __le64 *desc = &rp->descr[index];
5092
5093 *desc = cpu_to_le64(mark |
5094 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
5095 (len << TX_DESC_TR_LEN_SHIFT) |
5096 (mapping & TX_DESC_SAD));
5097 }
5098
5099 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
5100 u64 pad_bytes, u64 len)
5101 {
5102 u16 eth_proto, eth_proto_inner;
5103 u64 csum_bits, l3off, ihl, ret;
5104 u8 ip_proto;
5105 int ipv6;
5106
5107 eth_proto = be16_to_cpu(ehdr->h_proto);
5108 eth_proto_inner = eth_proto;
5109 if (eth_proto == ETH_P_8021Q) {
5110 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
5111 __be16 val = vp->h_vlan_encapsulated_proto;
5112
5113 eth_proto_inner = be16_to_cpu(val);
5114 }
5115
5116 ipv6 = ihl = 0;
5117 switch (skb->protocol) {
5118 case __constant_htons(ETH_P_IP):
5119 ip_proto = ip_hdr(skb)->protocol;
5120 ihl = ip_hdr(skb)->ihl;
5121 break;
5122 case __constant_htons(ETH_P_IPV6):
5123 ip_proto = ipv6_hdr(skb)->nexthdr;
5124 ihl = (40 >> 2);
5125 ipv6 = 1;
5126 break;
5127 default:
5128 ip_proto = ihl = 0;
5129 break;
5130 }
5131
5132 csum_bits = TXHDR_CSUM_NONE;
5133 if (skb->ip_summed == CHECKSUM_PARTIAL) {
5134 u64 start, stuff;
5135
5136 csum_bits = (ip_proto == IPPROTO_TCP ?
5137 TXHDR_CSUM_TCP :
5138 (ip_proto == IPPROTO_UDP ?
5139 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
5140
5141 start = skb_transport_offset(skb) -
5142 (pad_bytes + sizeof(struct tx_pkt_hdr));
5143 stuff = start + skb->csum_offset;
5144
5145 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
5146 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
5147 }
5148
5149 l3off = skb_network_offset(skb) -
5150 (pad_bytes + sizeof(struct tx_pkt_hdr));
5151
5152 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
5153 (len << TXHDR_LEN_SHIFT) |
5154 ((l3off / 2) << TXHDR_L3START_SHIFT) |
5155 (ihl << TXHDR_IHL_SHIFT) |
5156 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
5157 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
5158 (ipv6 ? TXHDR_IP_VER : 0) |
5159 csum_bits);
5160
5161 return ret;
5162 }
5163
5164 static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
5165 {
5166 return &np->tx_rings[0];
5167 }
5168
5169 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
5170 {
5171 struct niu *np = netdev_priv(dev);
5172 unsigned long align, headroom;
5173 struct tx_ring_info *rp;
5174 struct tx_pkt_hdr *tp;
5175 unsigned int len, nfg;
5176 struct ethhdr *ehdr;
5177 int prod, i, tlen;
5178 u64 mapping, mrk;
5179
5180 rp = tx_ring_select(np, skb);
5181
5182 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
5183 netif_stop_queue(dev);
5184 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
5185 "queue awake!\n", dev->name);
5186 rp->tx_errors++;
5187 return NETDEV_TX_BUSY;
5188 }
5189
5190 if (skb->len < ETH_ZLEN) {
5191 unsigned int pad_bytes = ETH_ZLEN - skb->len;
5192
5193 if (skb_pad(skb, pad_bytes))
5194 goto out;
5195 skb_put(skb, pad_bytes);
5196 }
5197
5198 len = sizeof(struct tx_pkt_hdr) + 15;
5199 if (skb_headroom(skb) < len) {
5200 struct sk_buff *skb_new;
5201
5202 skb_new = skb_realloc_headroom(skb, len);
5203 if (!skb_new) {
5204 rp->tx_errors++;
5205 goto out_drop;
5206 }
5207 kfree_skb(skb);
5208 skb = skb_new;
5209 }
5210
5211 align = ((unsigned long) skb->data & (16 - 1));
5212 headroom = align + sizeof(struct tx_pkt_hdr);
5213
5214 ehdr = (struct ethhdr *) skb->data;
5215 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
5216
5217 len = skb->len - sizeof(struct tx_pkt_hdr);
5218 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
5219 tp->resv = 0;
5220
5221 len = skb_headlen(skb);
5222 mapping = np->ops->map_single(np->device, skb->data,
5223 len, DMA_TO_DEVICE);
5224
5225 prod = rp->prod;
5226
5227 rp->tx_buffs[prod].skb = skb;
5228 rp->tx_buffs[prod].mapping = mapping;
5229
5230 mrk = TX_DESC_SOP;
5231 if (++rp->mark_counter == rp->mark_freq) {
5232 rp->mark_counter = 0;
5233 mrk |= TX_DESC_MARK;
5234 rp->mark_pending++;
5235 }
5236
5237 tlen = len;
5238 nfg = skb_shinfo(skb)->nr_frags;
5239 while (tlen > 0) {
5240 tlen -= MAX_TX_DESC_LEN;
5241 nfg++;
5242 }
5243
5244 while (len > 0) {
5245 unsigned int this_len = len;
5246
5247 if (this_len > MAX_TX_DESC_LEN)
5248 this_len = MAX_TX_DESC_LEN;
5249
5250 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
5251 mrk = nfg = 0;
5252
5253 prod = NEXT_TX(rp, prod);
5254 mapping += this_len;
5255 len -= this_len;
5256 }
5257
5258 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
5259 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
5260
5261 len = frag->size;
5262 mapping = np->ops->map_page(np->device, frag->page,
5263 frag->page_offset, len,
5264 DMA_TO_DEVICE);
5265
5266 rp->tx_buffs[prod].skb = NULL;
5267 rp->tx_buffs[prod].mapping = mapping;
5268
5269 niu_set_txd(rp, prod, mapping, len, 0, 0);
5270
5271 prod = NEXT_TX(rp, prod);
5272 }
5273
5274 if (prod < rp->prod)
5275 rp->wrap_bit ^= TX_RING_KICK_WRAP;
5276 rp->prod = prod;
5277
5278 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
5279
5280 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
5281 netif_stop_queue(dev);
5282 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
5283 netif_wake_queue(dev);
5284 }
5285
5286 dev->trans_start = jiffies;
5287
5288 out:
5289 return NETDEV_TX_OK;
5290
5291 out_drop:
5292 rp->tx_errors++;
5293 kfree_skb(skb);
5294 goto out;
5295 }
5296
5297 static int niu_change_mtu(struct net_device *dev, int new_mtu)
5298 {
5299 struct niu *np = netdev_priv(dev);
5300 int err, orig_jumbo, new_jumbo;
5301
5302 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
5303 return -EINVAL;
5304
5305 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
5306 new_jumbo = (new_mtu > ETH_DATA_LEN);
5307
5308 dev->mtu = new_mtu;
5309
5310 if (!netif_running(dev) ||
5311 (orig_jumbo == new_jumbo))
5312 return 0;
5313
5314 niu_full_shutdown(np, dev);
5315
5316 niu_free_channels(np);
5317
5318 niu_enable_napi(np);
5319
5320 err = niu_alloc_channels(np);
5321 if (err)
5322 return err;
5323
5324 spin_lock_irq(&np->lock);
5325
5326 err = niu_init_hw(np);
5327 if (!err) {
5328 init_timer(&np->timer);
5329 np->timer.expires = jiffies + HZ;
5330 np->timer.data = (unsigned long) np;
5331 np->timer.function = niu_timer;
5332
5333 err = niu_enable_interrupts(np, 1);
5334 if (err)
5335 niu_stop_hw(np);
5336 }
5337
5338 spin_unlock_irq(&np->lock);
5339
5340 if (!err) {
5341 netif_start_queue(dev);
5342 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
5343 netif_carrier_on(dev);
5344
5345 add_timer(&np->timer);
5346 }
5347
5348 return err;
5349 }
5350
5351 static void niu_get_drvinfo(struct net_device *dev,
5352 struct ethtool_drvinfo *info)
5353 {
5354 struct niu *np = netdev_priv(dev);
5355 struct niu_vpd *vpd = &np->vpd;
5356
5357 strcpy(info->driver, DRV_MODULE_NAME);
5358 strcpy(info->version, DRV_MODULE_VERSION);
5359 sprintf(info->fw_version, "%d.%d",
5360 vpd->fcode_major, vpd->fcode_minor);
5361 if (np->parent->plat_type != PLAT_TYPE_NIU)
5362 strcpy(info->bus_info, pci_name(np->pdev));
5363 }
5364
5365 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5366 {
5367 struct niu *np = netdev_priv(dev);
5368 struct niu_link_config *lp;
5369
5370 lp = &np->link_config;
5371
5372 memset(cmd, 0, sizeof(*cmd));
5373 cmd->phy_address = np->phy_addr;
5374 cmd->supported = lp->supported;
5375 cmd->advertising = lp->advertising;
5376 cmd->autoneg = lp->autoneg;
5377 cmd->speed = lp->active_speed;
5378 cmd->duplex = lp->active_duplex;
5379
5380 return 0;
5381 }
5382
5383 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5384 {
5385 return -EINVAL;
5386 }
5387
5388 static u32 niu_get_msglevel(struct net_device *dev)
5389 {
5390 struct niu *np = netdev_priv(dev);
5391 return np->msg_enable;
5392 }
5393
5394 static void niu_set_msglevel(struct net_device *dev, u32 value)
5395 {
5396 struct niu *np = netdev_priv(dev);
5397 np->msg_enable = value;
5398 }
5399
5400 static int niu_get_eeprom_len(struct net_device *dev)
5401 {
5402 struct niu *np = netdev_priv(dev);
5403
5404 return np->eeprom_len;
5405 }
5406
5407 static int niu_get_eeprom(struct net_device *dev,
5408 struct ethtool_eeprom *eeprom, u8 *data)
5409 {
5410 struct niu *np = netdev_priv(dev);
5411 u32 offset, len, val;
5412
5413 offset = eeprom->offset;
5414 len = eeprom->len;
5415
5416 if (offset + len < offset)
5417 return -EINVAL;
5418 if (offset >= np->eeprom_len)
5419 return -EINVAL;
5420 if (offset + len > np->eeprom_len)
5421 len = eeprom->len = np->eeprom_len - offset;
5422
5423 if (offset & 3) {
5424 u32 b_offset, b_count;
5425
5426 b_offset = offset & 3;
5427 b_count = 4 - b_offset;
5428 if (b_count > len)
5429 b_count = len;
5430
5431 val = nr64(ESPC_NCR((offset - b_offset) / 4));
5432 memcpy(data, ((char *)&val) + b_offset, b_count);
5433 data += b_count;
5434 len -= b_count;
5435 offset += b_count;
5436 }
5437 while (len >= 4) {
5438 val = nr64(ESPC_NCR(offset / 4));
5439 memcpy(data, &val, 4);
5440 data += 4;
5441 len -= 4;
5442 offset += 4;
5443 }
5444 if (len) {
5445 val = nr64(ESPC_NCR(offset / 4));
5446 memcpy(data, &val, len);
5447 }
5448 return 0;
5449 }
5450
5451 static const struct {
5452 const char string[ETH_GSTRING_LEN];
5453 } niu_xmac_stat_keys[] = {
5454 { "tx_frames" },
5455 { "tx_bytes" },
5456 { "tx_fifo_errors" },
5457 { "tx_overflow_errors" },
5458 { "tx_max_pkt_size_errors" },
5459 { "tx_underflow_errors" },
5460 { "rx_local_faults" },
5461 { "rx_remote_faults" },
5462 { "rx_link_faults" },
5463 { "rx_align_errors" },
5464 { "rx_frags" },
5465 { "rx_mcasts" },
5466 { "rx_bcasts" },
5467 { "rx_hist_cnt1" },
5468 { "rx_hist_cnt2" },
5469 { "rx_hist_cnt3" },
5470 { "rx_hist_cnt4" },
5471 { "rx_hist_cnt5" },
5472 { "rx_hist_cnt6" },
5473 { "rx_hist_cnt7" },
5474 { "rx_octets" },
5475 { "rx_code_violations" },
5476 { "rx_len_errors" },
5477 { "rx_crc_errors" },
5478 { "rx_underflows" },
5479 { "rx_overflows" },
5480 { "pause_off_state" },
5481 { "pause_on_state" },
5482 { "pause_received" },
5483 };
5484
5485 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
5486
5487 static const struct {
5488 const char string[ETH_GSTRING_LEN];
5489 } niu_bmac_stat_keys[] = {
5490 { "tx_underflow_errors" },
5491 { "tx_max_pkt_size_errors" },
5492 { "tx_bytes" },
5493 { "tx_frames" },
5494 { "rx_overflows" },
5495 { "rx_frames" },
5496 { "rx_align_errors" },
5497 { "rx_crc_errors" },
5498 { "rx_len_errors" },
5499 { "pause_off_state" },
5500 { "pause_on_state" },
5501 { "pause_received" },
5502 };
5503
5504 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
5505
5506 static const struct {
5507 const char string[ETH_GSTRING_LEN];
5508 } niu_rxchan_stat_keys[] = {
5509 { "rx_channel" },
5510 { "rx_packets" },
5511 { "rx_bytes" },
5512 { "rx_dropped" },
5513 { "rx_errors" },
5514 };
5515
5516 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
5517
5518 static const struct {
5519 const char string[ETH_GSTRING_LEN];
5520 } niu_txchan_stat_keys[] = {
5521 { "tx_channel" },
5522 { "tx_packets" },
5523 { "tx_bytes" },
5524 { "tx_errors" },
5525 };
5526
5527 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
5528
5529 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5530 {
5531 struct niu *np = netdev_priv(dev);
5532 int i;
5533
5534 if (stringset != ETH_SS_STATS)
5535 return;
5536
5537 if (np->flags & NIU_FLAGS_XMAC) {
5538 memcpy(data, niu_xmac_stat_keys,
5539 sizeof(niu_xmac_stat_keys));
5540 data += sizeof(niu_xmac_stat_keys);
5541 } else {
5542 memcpy(data, niu_bmac_stat_keys,
5543 sizeof(niu_bmac_stat_keys));
5544 data += sizeof(niu_bmac_stat_keys);
5545 }
5546 for (i = 0; i < np->num_rx_rings; i++) {
5547 memcpy(data, niu_rxchan_stat_keys,
5548 sizeof(niu_rxchan_stat_keys));
5549 data += sizeof(niu_rxchan_stat_keys);
5550 }
5551 for (i = 0; i < np->num_tx_rings; i++) {
5552 memcpy(data, niu_txchan_stat_keys,
5553 sizeof(niu_txchan_stat_keys));
5554 data += sizeof(niu_txchan_stat_keys);
5555 }
5556 }
5557
5558 static int niu_get_stats_count(struct net_device *dev)
5559 {
5560 struct niu *np = netdev_priv(dev);
5561
5562 return ((np->flags & NIU_FLAGS_XMAC ?
5563 NUM_XMAC_STAT_KEYS :
5564 NUM_BMAC_STAT_KEYS) +
5565 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
5566 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
5567 }
5568
5569 static void niu_get_ethtool_stats(struct net_device *dev,
5570 struct ethtool_stats *stats, u64 *data)
5571 {
5572 struct niu *np = netdev_priv(dev);
5573 int i;
5574
5575 niu_sync_mac_stats(np);
5576 if (np->flags & NIU_FLAGS_XMAC) {
5577 memcpy(data, &np->mac_stats.xmac,
5578 sizeof(struct niu_xmac_stats));
5579 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
5580 } else {
5581 memcpy(data, &np->mac_stats.bmac,
5582 sizeof(struct niu_bmac_stats));
5583 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
5584 }
5585 for (i = 0; i < np->num_rx_rings; i++) {
5586 struct rx_ring_info *rp = &np->rx_rings[i];
5587
5588 data[0] = rp->rx_channel;
5589 data[1] = rp->rx_packets;
5590 data[2] = rp->rx_bytes;
5591 data[3] = rp->rx_dropped;
5592 data[4] = rp->rx_errors;
5593 data += 5;
5594 }
5595 for (i = 0; i < np->num_tx_rings; i++) {
5596 struct tx_ring_info *rp = &np->tx_rings[i];
5597
5598 data[0] = rp->tx_channel;
5599 data[1] = rp->tx_packets;
5600 data[2] = rp->tx_bytes;
5601 data[3] = rp->tx_errors;
5602 data += 4;
5603 }
5604 }
5605
5606 static u64 niu_led_state_save(struct niu *np)
5607 {
5608 if (np->flags & NIU_FLAGS_XMAC)
5609 return nr64_mac(XMAC_CONFIG);
5610 else
5611 return nr64_mac(BMAC_XIF_CONFIG);
5612 }
5613
5614 static void niu_led_state_restore(struct niu *np, u64 val)
5615 {
5616 if (np->flags & NIU_FLAGS_XMAC)
5617 nw64_mac(XMAC_CONFIG, val);
5618 else
5619 nw64_mac(BMAC_XIF_CONFIG, val);
5620 }
5621
5622 static void niu_force_led(struct niu *np, int on)
5623 {
5624 u64 val, reg, bit;
5625
5626 if (np->flags & NIU_FLAGS_XMAC) {
5627 reg = XMAC_CONFIG;
5628 bit = XMAC_CONFIG_FORCE_LED_ON;
5629 } else {
5630 reg = BMAC_XIF_CONFIG;
5631 bit = BMAC_XIF_CONFIG_LINK_LED;
5632 }
5633
5634 val = nr64_mac(reg);
5635 if (on)
5636 val |= bit;
5637 else
5638 val &= ~bit;
5639 nw64_mac(reg, val);
5640 }
5641
5642 static int niu_phys_id(struct net_device *dev, u32 data)
5643 {
5644 struct niu *np = netdev_priv(dev);
5645 u64 orig_led_state;
5646 int i;
5647
5648 if (!netif_running(dev))
5649 return -EAGAIN;
5650
5651 if (data == 0)
5652 data = 2;
5653
5654 orig_led_state = niu_led_state_save(np);
5655 for (i = 0; i < (data * 2); i++) {
5656 int on = ((i % 2) == 0);
5657
5658 niu_force_led(np, on);
5659
5660 if (msleep_interruptible(500))
5661 break;
5662 }
5663 niu_led_state_restore(np, orig_led_state);
5664
5665 return 0;
5666 }
5667
5668 static const struct ethtool_ops niu_ethtool_ops = {
5669 .get_drvinfo = niu_get_drvinfo,
5670 .get_link = ethtool_op_get_link,
5671 .get_msglevel = niu_get_msglevel,
5672 .set_msglevel = niu_set_msglevel,
5673 .get_eeprom_len = niu_get_eeprom_len,
5674 .get_eeprom = niu_get_eeprom,
5675 .get_settings = niu_get_settings,
5676 .set_settings = niu_set_settings,
5677 .get_strings = niu_get_strings,
5678 .get_stats_count = niu_get_stats_count,
5679 .get_ethtool_stats = niu_get_ethtool_stats,
5680 .phys_id = niu_phys_id,
5681 };
5682
5683 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
5684 int ldg, int ldn)
5685 {
5686 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
5687 return -EINVAL;
5688 if (ldn < 0 || ldn > LDN_MAX)
5689 return -EINVAL;
5690
5691 parent->ldg_map[ldn] = ldg;
5692
5693 if (np->parent->plat_type == PLAT_TYPE_NIU) {
5694 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
5695 * the firmware, and we're not supposed to change them.
5696 * Validate the mapping, because if it's wrong we probably
5697 * won't get any interrupts and that's painful to debug.
5698 */
5699 if (nr64(LDG_NUM(ldn)) != ldg) {
5700 dev_err(np->device, PFX "Port %u, mis-matched "
5701 "LDG assignment "
5702 "for ldn %d, should be %d is %llu\n",
5703 np->port, ldn, ldg,
5704 (unsigned long long) nr64(LDG_NUM(ldn)));
5705 return -EINVAL;
5706 }
5707 } else
5708 nw64(LDG_NUM(ldn), ldg);
5709
5710 return 0;
5711 }
5712
5713 static int niu_set_ldg_timer_res(struct niu *np, int res)
5714 {
5715 if (res < 0 || res > LDG_TIMER_RES_VAL)
5716 return -EINVAL;
5717
5718
5719 nw64(LDG_TIMER_RES, res);
5720
5721 return 0;
5722 }
5723
5724 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
5725 {
5726 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
5727 (func < 0 || func > 3) ||
5728 (vector < 0 || vector > 0x1f))
5729 return -EINVAL;
5730
5731 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
5732
5733 return 0;
5734 }
5735
5736 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
5737 {
5738 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
5739 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
5740 int limit;
5741
5742 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
5743 return -EINVAL;
5744
5745 frame = frame_base;
5746 nw64(ESPC_PIO_STAT, frame);
5747 limit = 64;
5748 do {
5749 udelay(5);
5750 frame = nr64(ESPC_PIO_STAT);
5751 if (frame & ESPC_PIO_STAT_READ_END)
5752 break;
5753 } while (limit--);
5754 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5755 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5756 (unsigned long long) frame);
5757 return -ENODEV;
5758 }
5759
5760 frame = frame_base;
5761 nw64(ESPC_PIO_STAT, frame);
5762 limit = 64;
5763 do {
5764 udelay(5);
5765 frame = nr64(ESPC_PIO_STAT);
5766 if (frame & ESPC_PIO_STAT_READ_END)
5767 break;
5768 } while (limit--);
5769 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5770 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5771 (unsigned long long) frame);
5772 return -ENODEV;
5773 }
5774
5775 frame = nr64(ESPC_PIO_STAT);
5776 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
5777 }
5778
5779 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
5780 {
5781 int err = niu_pci_eeprom_read(np, off);
5782 u16 val;
5783
5784 if (err < 0)
5785 return err;
5786 val = (err << 8);
5787 err = niu_pci_eeprom_read(np, off + 1);
5788 if (err < 0)
5789 return err;
5790 val |= (err & 0xff);
5791
5792 return val;
5793 }
5794
5795 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
5796 {
5797 int err = niu_pci_eeprom_read(np, off);
5798 u16 val;
5799
5800 if (err < 0)
5801 return err;
5802
5803 val = (err & 0xff);
5804 err = niu_pci_eeprom_read(np, off + 1);
5805 if (err < 0)
5806 return err;
5807
5808 val |= (err & 0xff) << 8;
5809
5810 return val;
5811 }
5812
5813 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
5814 u32 off,
5815 char *namebuf,
5816 int namebuf_len)
5817 {
5818 int i;
5819
5820 for (i = 0; i < namebuf_len; i++) {
5821 int err = niu_pci_eeprom_read(np, off + i);
5822 if (err < 0)
5823 return err;
5824 *namebuf++ = err;
5825 if (!err)
5826 break;
5827 }
5828 if (i >= namebuf_len)
5829 return -EINVAL;
5830
5831 return i + 1;
5832 }
5833
5834 static void __devinit niu_vpd_parse_version(struct niu *np)
5835 {
5836 struct niu_vpd *vpd = &np->vpd;
5837 int len = strlen(vpd->version) + 1;
5838 const char *s = vpd->version;
5839 int i;
5840
5841 for (i = 0; i < len - 5; i++) {
5842 if (!strncmp(s + i, "FCode ", 5))
5843 break;
5844 }
5845 if (i >= len - 5)
5846 return;
5847
5848 s += i + 5;
5849 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
5850
5851 niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
5852 vpd->fcode_major, vpd->fcode_minor);
5853 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
5854 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
5855 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
5856 np->flags |= NIU_FLAGS_VPD_VALID;
5857 }
5858
5859 /* ESPC_PIO_EN_ENABLE must be set */
5860 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
5861 u32 start, u32 end)
5862 {
5863 unsigned int found_mask = 0;
5864 #define FOUND_MASK_MODEL 0x00000001
5865 #define FOUND_MASK_BMODEL 0x00000002
5866 #define FOUND_MASK_VERS 0x00000004
5867 #define FOUND_MASK_MAC 0x00000008
5868 #define FOUND_MASK_NMAC 0x00000010
5869 #define FOUND_MASK_PHY 0x00000020
5870 #define FOUND_MASK_ALL 0x0000003f
5871
5872 niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
5873 start, end);
5874 while (start < end) {
5875 int len, err, instance, type, prop_len;
5876 char namebuf[64];
5877 u8 *prop_buf;
5878 int max_len;
5879
5880 if (found_mask == FOUND_MASK_ALL) {
5881 niu_vpd_parse_version(np);
5882 return 1;
5883 }
5884
5885 err = niu_pci_eeprom_read(np, start + 2);
5886 if (err < 0)
5887 return err;
5888 len = err;
5889 start += 3;
5890
5891 instance = niu_pci_eeprom_read(np, start);
5892 type = niu_pci_eeprom_read(np, start + 3);
5893 prop_len = niu_pci_eeprom_read(np, start + 4);
5894 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
5895 if (err < 0)
5896 return err;
5897
5898 prop_buf = NULL;
5899 max_len = 0;
5900 if (!strcmp(namebuf, "model")) {
5901 prop_buf = np->vpd.model;
5902 max_len = NIU_VPD_MODEL_MAX;
5903 found_mask |= FOUND_MASK_MODEL;
5904 } else if (!strcmp(namebuf, "board-model")) {
5905 prop_buf = np->vpd.board_model;
5906 max_len = NIU_VPD_BD_MODEL_MAX;
5907 found_mask |= FOUND_MASK_BMODEL;
5908 } else if (!strcmp(namebuf, "version")) {
5909 prop_buf = np->vpd.version;
5910 max_len = NIU_VPD_VERSION_MAX;
5911 found_mask |= FOUND_MASK_VERS;
5912 } else if (!strcmp(namebuf, "local-mac-address")) {
5913 prop_buf = np->vpd.local_mac;
5914 max_len = ETH_ALEN;
5915 found_mask |= FOUND_MASK_MAC;
5916 } else if (!strcmp(namebuf, "num-mac-addresses")) {
5917 prop_buf = &np->vpd.mac_num;
5918 max_len = 1;
5919 found_mask |= FOUND_MASK_NMAC;
5920 } else if (!strcmp(namebuf, "phy-type")) {
5921 prop_buf = np->vpd.phy_type;
5922 max_len = NIU_VPD_PHY_TYPE_MAX;
5923 found_mask |= FOUND_MASK_PHY;
5924 }
5925
5926 if (max_len && prop_len > max_len) {
5927 dev_err(np->device, PFX "Property '%s' length (%d) is "
5928 "too long.\n", namebuf, prop_len);
5929 return -EINVAL;
5930 }
5931
5932 if (prop_buf) {
5933 u32 off = start + 5 + err;
5934 int i;
5935
5936 niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
5937 "len[%d]\n", namebuf, prop_len);
5938 for (i = 0; i < prop_len; i++)
5939 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
5940 }
5941
5942 start += len;
5943 }
5944
5945 return 0;
5946 }
5947
5948 /* ESPC_PIO_EN_ENABLE must be set */
5949 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
5950 {
5951 u32 offset;
5952 int err;
5953
5954 err = niu_pci_eeprom_read16_swp(np, start + 1);
5955 if (err < 0)
5956 return;
5957
5958 offset = err + 3;
5959
5960 while (start + offset < ESPC_EEPROM_SIZE) {
5961 u32 here = start + offset;
5962 u32 end;
5963
5964 err = niu_pci_eeprom_read(np, here);
5965 if (err != 0x90)
5966 return;
5967
5968 err = niu_pci_eeprom_read16_swp(np, here + 1);
5969 if (err < 0)
5970 return;
5971
5972 here = start + offset + 3;
5973 end = start + offset + err;
5974
5975 offset += err;
5976
5977 err = niu_pci_vpd_scan_props(np, here, end);
5978 if (err < 0 || err == 1)
5979 return;
5980 }
5981 }
5982
5983 /* ESPC_PIO_EN_ENABLE must be set */
5984 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
5985 {
5986 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
5987 int err;
5988
5989 while (start < end) {
5990 ret = start;
5991
5992 /* ROM header signature? */
5993 err = niu_pci_eeprom_read16(np, start + 0);
5994 if (err != 0x55aa)
5995 return 0;
5996
5997 /* Apply offset to PCI data structure. */
5998 err = niu_pci_eeprom_read16(np, start + 23);
5999 if (err < 0)
6000 return 0;
6001 start += err;
6002
6003 /* Check for "PCIR" signature. */
6004 err = niu_pci_eeprom_read16(np, start + 0);
6005 if (err != 0x5043)
6006 return 0;
6007 err = niu_pci_eeprom_read16(np, start + 2);
6008 if (err != 0x4952)
6009 return 0;
6010
6011 /* Check for OBP image type. */
6012 err = niu_pci_eeprom_read(np, start + 20);
6013 if (err < 0)
6014 return 0;
6015 if (err != 0x01) {
6016 err = niu_pci_eeprom_read(np, ret + 2);
6017 if (err < 0)
6018 return 0;
6019
6020 start = ret + (err * 512);
6021 continue;
6022 }
6023
6024 err = niu_pci_eeprom_read16_swp(np, start + 8);
6025 if (err < 0)
6026 return err;
6027 ret += err;
6028
6029 err = niu_pci_eeprom_read(np, ret + 0);
6030 if (err != 0x82)
6031 return 0;
6032
6033 return ret;
6034 }
6035
6036 return 0;
6037 }
6038
6039 static int __devinit niu_phy_type_prop_decode(struct niu *np,
6040 const char *phy_prop)
6041 {
6042 if (!strcmp(phy_prop, "mif")) {
6043 /* 1G copper, MII */
6044 np->flags &= ~(NIU_FLAGS_FIBER |
6045 NIU_FLAGS_10G);
6046 np->mac_xcvr = MAC_XCVR_MII;
6047 } else if (!strcmp(phy_prop, "xgf")) {
6048 /* 10G fiber, XPCS */
6049 np->flags |= (NIU_FLAGS_10G |
6050 NIU_FLAGS_FIBER);
6051 np->mac_xcvr = MAC_XCVR_XPCS;
6052 } else if (!strcmp(phy_prop, "pcs")) {
6053 /* 1G fiber, PCS */
6054 np->flags &= ~NIU_FLAGS_10G;
6055 np->flags |= NIU_FLAGS_FIBER;
6056 np->mac_xcvr = MAC_XCVR_PCS;
6057 } else if (!strcmp(phy_prop, "xgc")) {
6058 /* 10G copper, XPCS */
6059 np->flags |= NIU_FLAGS_10G;
6060 np->flags &= ~NIU_FLAGS_FIBER;
6061 np->mac_xcvr = MAC_XCVR_XPCS;
6062 } else {
6063 return -EINVAL;
6064 }
6065 return 0;
6066 }
6067
6068 static void __devinit niu_pci_vpd_validate(struct niu *np)
6069 {
6070 struct net_device *dev = np->dev;
6071 struct niu_vpd *vpd = &np->vpd;
6072 u8 val8;
6073
6074 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
6075 dev_err(np->device, PFX "VPD MAC invalid, "
6076 "falling back to SPROM.\n");
6077
6078 np->flags &= ~NIU_FLAGS_VPD_VALID;
6079 return;
6080 }
6081
6082 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6083 dev_err(np->device, PFX "Illegal phy string [%s].\n",
6084 np->vpd.phy_type);
6085 dev_err(np->device, PFX "Falling back to SPROM.\n");
6086 np->flags &= ~NIU_FLAGS_VPD_VALID;
6087 return;
6088 }
6089
6090 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
6091
6092 val8 = dev->perm_addr[5];
6093 dev->perm_addr[5] += np->port;
6094 if (dev->perm_addr[5] < val8)
6095 dev->perm_addr[4]++;
6096
6097 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6098 }
6099
6100 static int __devinit niu_pci_probe_sprom(struct niu *np)
6101 {
6102 struct net_device *dev = np->dev;
6103 int len, i;
6104 u64 val, sum;
6105 u8 val8;
6106
6107 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
6108 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
6109 len = val / 4;
6110
6111 np->eeprom_len = len;
6112
6113 niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
6114
6115 sum = 0;
6116 for (i = 0; i < len; i++) {
6117 val = nr64(ESPC_NCR(i));
6118 sum += (val >> 0) & 0xff;
6119 sum += (val >> 8) & 0xff;
6120 sum += (val >> 16) & 0xff;
6121 sum += (val >> 24) & 0xff;
6122 }
6123 niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
6124 if ((sum & 0xff) != 0xab) {
6125 dev_err(np->device, PFX "Bad SPROM checksum "
6126 "(%x, should be 0xab)\n", (int) (sum & 0xff));
6127 return -EINVAL;
6128 }
6129
6130 val = nr64(ESPC_PHY_TYPE);
6131 switch (np->port) {
6132 case 0:
6133 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
6134 ESPC_PHY_TYPE_PORT0_SHIFT;
6135 break;
6136 case 1:
6137 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
6138 ESPC_PHY_TYPE_PORT1_SHIFT;
6139 break;
6140 case 2:
6141 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
6142 ESPC_PHY_TYPE_PORT2_SHIFT;
6143 break;
6144 case 3:
6145 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
6146 ESPC_PHY_TYPE_PORT3_SHIFT;
6147 break;
6148 default:
6149 dev_err(np->device, PFX "Bogus port number %u\n",
6150 np->port);
6151 return -EINVAL;
6152 }
6153 niudbg(PROBE, "SPROM: PHY type %x\n", val8);
6154
6155 switch (val8) {
6156 case ESPC_PHY_TYPE_1G_COPPER:
6157 /* 1G copper, MII */
6158 np->flags &= ~(NIU_FLAGS_FIBER |
6159 NIU_FLAGS_10G);
6160 np->mac_xcvr = MAC_XCVR_MII;
6161 break;
6162
6163 case ESPC_PHY_TYPE_1G_FIBER:
6164 /* 1G fiber, PCS */
6165 np->flags &= ~NIU_FLAGS_10G;
6166 np->flags |= NIU_FLAGS_FIBER;
6167 np->mac_xcvr = MAC_XCVR_PCS;
6168 break;
6169
6170 case ESPC_PHY_TYPE_10G_COPPER:
6171 /* 10G copper, XPCS */
6172 np->flags |= NIU_FLAGS_10G;
6173 np->flags &= ~NIU_FLAGS_FIBER;
6174 np->mac_xcvr = MAC_XCVR_XPCS;
6175 break;
6176
6177 case ESPC_PHY_TYPE_10G_FIBER:
6178 /* 10G fiber, XPCS */
6179 np->flags |= (NIU_FLAGS_10G |
6180 NIU_FLAGS_FIBER);
6181 np->mac_xcvr = MAC_XCVR_XPCS;
6182 break;
6183
6184 default:
6185 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
6186 return -EINVAL;
6187 }
6188
6189 val = nr64(ESPC_MAC_ADDR0);
6190 niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
6191 (unsigned long long) val);
6192 dev->perm_addr[0] = (val >> 0) & 0xff;
6193 dev->perm_addr[1] = (val >> 8) & 0xff;
6194 dev->perm_addr[2] = (val >> 16) & 0xff;
6195 dev->perm_addr[3] = (val >> 24) & 0xff;
6196
6197 val = nr64(ESPC_MAC_ADDR1);
6198 niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
6199 (unsigned long long) val);
6200 dev->perm_addr[4] = (val >> 0) & 0xff;
6201 dev->perm_addr[5] = (val >> 8) & 0xff;
6202
6203 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6204 dev_err(np->device, PFX "SPROM MAC address invalid\n");
6205 dev_err(np->device, PFX "[ \n");
6206 for (i = 0; i < 6; i++)
6207 printk("%02x ", dev->perm_addr[i]);
6208 printk("]\n");
6209 return -EINVAL;
6210 }
6211
6212 val8 = dev->perm_addr[5];
6213 dev->perm_addr[5] += np->port;
6214 if (dev->perm_addr[5] < val8)
6215 dev->perm_addr[4]++;
6216
6217 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6218
6219 val = nr64(ESPC_MOD_STR_LEN);
6220 niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
6221 (unsigned long long) val);
6222 if (val >= 8 * 4)
6223 return -EINVAL;
6224
6225 for (i = 0; i < val; i += 4) {
6226 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
6227
6228 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
6229 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
6230 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
6231 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
6232 }
6233 np->vpd.model[val] = '\0';
6234
6235 val = nr64(ESPC_BD_MOD_STR_LEN);
6236 niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
6237 (unsigned long long) val);
6238 if (val >= 4 * 4)
6239 return -EINVAL;
6240
6241 for (i = 0; i < val; i += 4) {
6242 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
6243
6244 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
6245 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
6246 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
6247 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
6248 }
6249 np->vpd.board_model[val] = '\0';
6250
6251 np->vpd.mac_num =
6252 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
6253 niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
6254 np->vpd.mac_num);
6255
6256 return 0;
6257 }
6258
6259 static int __devinit niu_get_and_validate_port(struct niu *np)
6260 {
6261 struct niu_parent *parent = np->parent;
6262
6263 if (np->port <= 1)
6264 np->flags |= NIU_FLAGS_XMAC;
6265
6266 if (!parent->num_ports) {
6267 if (parent->plat_type == PLAT_TYPE_NIU) {
6268 parent->num_ports = 2;
6269 } else {
6270 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
6271 ESPC_NUM_PORTS_MACS_VAL;
6272
6273 if (!parent->num_ports)
6274 parent->num_ports = 4;
6275 }
6276 }
6277
6278 niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
6279 np->port, parent->num_ports);
6280 if (np->port >= parent->num_ports)
6281 return -ENODEV;
6282
6283 return 0;
6284 }
6285
6286 static int __devinit phy_record(struct niu_parent *parent,
6287 struct phy_probe_info *p,
6288 int dev_id_1, int dev_id_2, u8 phy_port,
6289 int type)
6290 {
6291 u32 id = (dev_id_1 << 16) | dev_id_2;
6292 u8 idx;
6293
6294 if (dev_id_1 < 0 || dev_id_2 < 0)
6295 return 0;
6296 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
6297 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704)
6298 return 0;
6299 } else {
6300 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
6301 return 0;
6302 }
6303
6304 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
6305 parent->index, id,
6306 (type == PHY_TYPE_PMA_PMD ?
6307 "PMA/PMD" :
6308 (type == PHY_TYPE_PCS ?
6309 "PCS" : "MII")),
6310 phy_port);
6311
6312 if (p->cur[type] >= NIU_MAX_PORTS) {
6313 printk(KERN_ERR PFX "Too many PHY ports.\n");
6314 return -EINVAL;
6315 }
6316 idx = p->cur[type];
6317 p->phy_id[type][idx] = id;
6318 p->phy_port[type][idx] = phy_port;
6319 p->cur[type] = idx + 1;
6320 return 0;
6321 }
6322
6323 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
6324 {
6325 int i;
6326
6327 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
6328 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
6329 return 1;
6330 }
6331 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
6332 if (p->phy_port[PHY_TYPE_PCS][i] == port)
6333 return 1;
6334 }
6335
6336 return 0;
6337 }
6338
6339 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
6340 {
6341 int port, cnt;
6342
6343 cnt = 0;
6344 *lowest = 32;
6345 for (port = 8; port < 32; port++) {
6346 if (port_has_10g(p, port)) {
6347 if (!cnt)
6348 *lowest = port;
6349 cnt++;
6350 }
6351 }
6352
6353 return cnt;
6354 }
6355
6356 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
6357 {
6358 *lowest = 32;
6359 if (p->cur[PHY_TYPE_MII])
6360 *lowest = p->phy_port[PHY_TYPE_MII][0];
6361
6362 return p->cur[PHY_TYPE_MII];
6363 }
6364
6365 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
6366 {
6367 int num_ports = parent->num_ports;
6368 int i;
6369
6370 for (i = 0; i < num_ports; i++) {
6371 parent->rxchan_per_port[i] = (16 / num_ports);
6372 parent->txchan_per_port[i] = (16 / num_ports);
6373
6374 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6375 "[%u TX chans]\n",
6376 parent->index, i,
6377 parent->rxchan_per_port[i],
6378 parent->txchan_per_port[i]);
6379 }
6380 }
6381
6382 static void __devinit niu_divide_channels(struct niu_parent *parent,
6383 int num_10g, int num_1g)
6384 {
6385 int num_ports = parent->num_ports;
6386 int rx_chans_per_10g, rx_chans_per_1g;
6387 int tx_chans_per_10g, tx_chans_per_1g;
6388 int i, tot_rx, tot_tx;
6389
6390 if (!num_10g || !num_1g) {
6391 rx_chans_per_10g = rx_chans_per_1g =
6392 (NIU_NUM_RXCHAN / num_ports);
6393 tx_chans_per_10g = tx_chans_per_1g =
6394 (NIU_NUM_TXCHAN / num_ports);
6395 } else {
6396 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
6397 rx_chans_per_10g = (NIU_NUM_RXCHAN -
6398 (rx_chans_per_1g * num_1g)) /
6399 num_10g;
6400
6401 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
6402 tx_chans_per_10g = (NIU_NUM_TXCHAN -
6403 (tx_chans_per_1g * num_1g)) /
6404 num_10g;
6405 }
6406
6407 tot_rx = tot_tx = 0;
6408 for (i = 0; i < num_ports; i++) {
6409 int type = phy_decode(parent->port_phy, i);
6410
6411 if (type == PORT_TYPE_10G) {
6412 parent->rxchan_per_port[i] = rx_chans_per_10g;
6413 parent->txchan_per_port[i] = tx_chans_per_10g;
6414 } else {
6415 parent->rxchan_per_port[i] = rx_chans_per_1g;
6416 parent->txchan_per_port[i] = tx_chans_per_1g;
6417 }
6418 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6419 "[%u TX chans]\n",
6420 parent->index, i,
6421 parent->rxchan_per_port[i],
6422 parent->txchan_per_port[i]);
6423 tot_rx += parent->rxchan_per_port[i];
6424 tot_tx += parent->txchan_per_port[i];
6425 }
6426
6427 if (tot_rx > NIU_NUM_RXCHAN) {
6428 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
6429 "resetting to one per port.\n",
6430 parent->index, tot_rx);
6431 for (i = 0; i < num_ports; i++)
6432 parent->rxchan_per_port[i] = 1;
6433 }
6434 if (tot_tx > NIU_NUM_TXCHAN) {
6435 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
6436 "resetting to one per port.\n",
6437 parent->index, tot_tx);
6438 for (i = 0; i < num_ports; i++)
6439 parent->txchan_per_port[i] = 1;
6440 }
6441 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
6442 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
6443 "RX[%d] TX[%d]\n",
6444 parent->index, tot_rx, tot_tx);
6445 }
6446 }
6447
6448 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
6449 int num_10g, int num_1g)
6450 {
6451 int i, num_ports = parent->num_ports;
6452 int rdc_group, rdc_groups_per_port;
6453 int rdc_channel_base;
6454
6455 rdc_group = 0;
6456 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
6457
6458 rdc_channel_base = 0;
6459
6460 for (i = 0; i < num_ports; i++) {
6461 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
6462 int grp, num_channels = parent->rxchan_per_port[i];
6463 int this_channel_offset;
6464
6465 tp->first_table_num = rdc_group;
6466 tp->num_tables = rdc_groups_per_port;
6467 this_channel_offset = 0;
6468 for (grp = 0; grp < tp->num_tables; grp++) {
6469 struct rdc_table *rt = &tp->tables[grp];
6470 int slot;
6471
6472 pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
6473 parent->index, i, tp->first_table_num + grp);
6474 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
6475 rt->rxdma_channel[slot] =
6476 rdc_channel_base + this_channel_offset;
6477
6478 printk("%d ", rt->rxdma_channel[slot]);
6479
6480 if (++this_channel_offset == num_channels)
6481 this_channel_offset = 0;
6482 }
6483 printk("]\n");
6484 }
6485
6486 parent->rdc_default[i] = rdc_channel_base;
6487
6488 rdc_channel_base += num_channels;
6489 rdc_group += rdc_groups_per_port;
6490 }
6491 }
6492
6493 static int __devinit fill_phy_probe_info(struct niu *np,
6494 struct niu_parent *parent,
6495 struct phy_probe_info *info)
6496 {
6497 unsigned long flags;
6498 int port, err;
6499
6500 memset(info, 0, sizeof(*info));
6501
6502 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
6503 niu_lock_parent(np, flags);
6504 err = 0;
6505 for (port = 8; port < 32; port++) {
6506 int dev_id_1, dev_id_2;
6507
6508 dev_id_1 = mdio_read(np, port,
6509 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
6510 dev_id_2 = mdio_read(np, port,
6511 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
6512 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6513 PHY_TYPE_PMA_PMD);
6514 if (err)
6515 break;
6516 dev_id_1 = mdio_read(np, port,
6517 NIU_PCS_DEV_ADDR, MII_PHYSID1);
6518 dev_id_2 = mdio_read(np, port,
6519 NIU_PCS_DEV_ADDR, MII_PHYSID2);
6520 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6521 PHY_TYPE_PCS);
6522 if (err)
6523 break;
6524 dev_id_1 = mii_read(np, port, MII_PHYSID1);
6525 dev_id_2 = mii_read(np, port, MII_PHYSID2);
6526 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6527 PHY_TYPE_MII);
6528 if (err)
6529 break;
6530 }
6531 niu_unlock_parent(np, flags);
6532
6533 return err;
6534 }
6535
6536 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
6537 {
6538 struct phy_probe_info *info = &parent->phy_probe_info;
6539 int lowest_10g, lowest_1g;
6540 int num_10g, num_1g;
6541 u32 val;
6542 int err;
6543
6544 err = fill_phy_probe_info(np, parent, info);
6545 if (err)
6546 return err;
6547
6548 num_10g = count_10g_ports(info, &lowest_10g);
6549 num_1g = count_1g_ports(info, &lowest_1g);
6550
6551 switch ((num_10g << 4) | num_1g) {
6552 case 0x24:
6553 if (lowest_1g == 10)
6554 parent->plat_type = PLAT_TYPE_VF_P0;
6555 else if (lowest_1g == 26)
6556 parent->plat_type = PLAT_TYPE_VF_P1;
6557 else
6558 goto unknown_vg_1g_port;
6559
6560 /* fallthru */
6561 case 0x22:
6562 val = (phy_encode(PORT_TYPE_10G, 0) |
6563 phy_encode(PORT_TYPE_10G, 1) |
6564 phy_encode(PORT_TYPE_1G, 2) |
6565 phy_encode(PORT_TYPE_1G, 3));
6566 break;
6567
6568 case 0x20:
6569 val = (phy_encode(PORT_TYPE_10G, 0) |
6570 phy_encode(PORT_TYPE_10G, 1));
6571 break;
6572
6573 case 0x10:
6574 val = phy_encode(PORT_TYPE_10G, np->port);
6575 break;
6576
6577 case 0x14:
6578 if (lowest_1g == 10)
6579 parent->plat_type = PLAT_TYPE_VF_P0;
6580 else if (lowest_1g == 26)
6581 parent->plat_type = PLAT_TYPE_VF_P1;
6582 else
6583 goto unknown_vg_1g_port;
6584
6585 /* fallthru */
6586 case 0x13:
6587 if ((lowest_10g & 0x7) == 0)
6588 val = (phy_encode(PORT_TYPE_10G, 0) |
6589 phy_encode(PORT_TYPE_1G, 1) |
6590 phy_encode(PORT_TYPE_1G, 2) |
6591 phy_encode(PORT_TYPE_1G, 3));
6592 else
6593 val = (phy_encode(PORT_TYPE_1G, 0) |
6594 phy_encode(PORT_TYPE_10G, 1) |
6595 phy_encode(PORT_TYPE_1G, 2) |
6596 phy_encode(PORT_TYPE_1G, 3));
6597 break;
6598
6599 case 0x04:
6600 if (lowest_1g == 10)
6601 parent->plat_type = PLAT_TYPE_VF_P0;
6602 else if (lowest_1g == 26)
6603 parent->plat_type = PLAT_TYPE_VF_P1;
6604 else
6605 goto unknown_vg_1g_port;
6606
6607 val = (phy_encode(PORT_TYPE_1G, 0) |
6608 phy_encode(PORT_TYPE_1G, 1) |
6609 phy_encode(PORT_TYPE_1G, 2) |
6610 phy_encode(PORT_TYPE_1G, 3));
6611 break;
6612
6613 default:
6614 printk(KERN_ERR PFX "Unsupported port config "
6615 "10G[%d] 1G[%d]\n",
6616 num_10g, num_1g);
6617 return -EINVAL;
6618 }
6619
6620 parent->port_phy = val;
6621
6622 if (parent->plat_type == PLAT_TYPE_NIU)
6623 niu_n2_divide_channels(parent);
6624 else
6625 niu_divide_channels(parent, num_10g, num_1g);
6626
6627 niu_divide_rdc_groups(parent, num_10g, num_1g);
6628
6629 return 0;
6630
6631 unknown_vg_1g_port:
6632 printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
6633 lowest_1g);
6634 return -EINVAL;
6635 }
6636
6637 static int __devinit niu_probe_ports(struct niu *np)
6638 {
6639 struct niu_parent *parent = np->parent;
6640 int err, i;
6641
6642 niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
6643 parent->port_phy);
6644
6645 if (parent->port_phy == PORT_PHY_UNKNOWN) {
6646 err = walk_phys(np, parent);
6647 if (err)
6648 return err;
6649
6650 niu_set_ldg_timer_res(np, 2);
6651 for (i = 0; i <= LDN_MAX; i++)
6652 niu_ldn_irq_enable(np, i, 0);
6653 }
6654
6655 if (parent->port_phy == PORT_PHY_INVALID)
6656 return -EINVAL;
6657
6658 return 0;
6659 }
6660
6661 static int __devinit niu_classifier_swstate_init(struct niu *np)
6662 {
6663 struct niu_classifier *cp = &np->clas;
6664
6665 niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
6666 np->parent->tcam_num_entries);
6667
6668 cp->tcam_index = (u16) np->port;
6669 cp->h1_init = 0xffffffff;
6670 cp->h2_init = 0xffff;
6671
6672 return fflp_early_init(np);
6673 }
6674
6675 static void __devinit niu_link_config_init(struct niu *np)
6676 {
6677 struct niu_link_config *lp = &np->link_config;
6678
6679 lp->advertising = (ADVERTISED_10baseT_Half |
6680 ADVERTISED_10baseT_Full |
6681 ADVERTISED_100baseT_Half |
6682 ADVERTISED_100baseT_Full |
6683 ADVERTISED_1000baseT_Half |
6684 ADVERTISED_1000baseT_Full |
6685 ADVERTISED_10000baseT_Full |
6686 ADVERTISED_Autoneg);
6687 lp->speed = lp->active_speed = SPEED_INVALID;
6688 lp->duplex = lp->active_duplex = DUPLEX_INVALID;
6689 #if 0
6690 lp->loopback_mode = LOOPBACK_MAC;
6691 lp->active_speed = SPEED_10000;
6692 lp->active_duplex = DUPLEX_FULL;
6693 #else
6694 lp->loopback_mode = LOOPBACK_DISABLED;
6695 #endif
6696 }
6697
6698 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
6699 {
6700 switch (np->port) {
6701 case 0:
6702 np->mac_regs = np->regs + XMAC_PORT0_OFF;
6703 np->ipp_off = 0x00000;
6704 np->pcs_off = 0x04000;
6705 np->xpcs_off = 0x02000;
6706 break;
6707
6708 case 1:
6709 np->mac_regs = np->regs + XMAC_PORT1_OFF;
6710 np->ipp_off = 0x08000;
6711 np->pcs_off = 0x0a000;
6712 np->xpcs_off = 0x08000;
6713 break;
6714
6715 case 2:
6716 np->mac_regs = np->regs + BMAC_PORT2_OFF;
6717 np->ipp_off = 0x04000;
6718 np->pcs_off = 0x0e000;
6719 np->xpcs_off = ~0UL;
6720 break;
6721
6722 case 3:
6723 np->mac_regs = np->regs + BMAC_PORT3_OFF;
6724 np->ipp_off = 0x0c000;
6725 np->pcs_off = 0x12000;
6726 np->xpcs_off = ~0UL;
6727 break;
6728
6729 default:
6730 dev_err(np->device, PFX "Port %u is invalid, cannot "
6731 "compute MAC block offset.\n", np->port);
6732 return -EINVAL;
6733 }
6734
6735 return 0;
6736 }
6737
6738 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
6739 {
6740 struct msix_entry msi_vec[NIU_NUM_LDG];
6741 struct niu_parent *parent = np->parent;
6742 struct pci_dev *pdev = np->pdev;
6743 int i, num_irqs, err;
6744 u8 first_ldg;
6745
6746 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
6747 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
6748 ldg_num_map[i] = first_ldg + i;
6749
6750 num_irqs = (parent->rxchan_per_port[np->port] +
6751 parent->txchan_per_port[np->port] +
6752 (np->port == 0 ? 3 : 1));
6753 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
6754
6755 retry:
6756 for (i = 0; i < num_irqs; i++) {
6757 msi_vec[i].vector = 0;
6758 msi_vec[i].entry = i;
6759 }
6760
6761 err = pci_enable_msix(pdev, msi_vec, num_irqs);
6762 if (err < 0) {
6763 np->flags &= ~NIU_FLAGS_MSIX;
6764 return;
6765 }
6766 if (err > 0) {
6767 num_irqs = err;
6768 goto retry;
6769 }
6770
6771 np->flags |= NIU_FLAGS_MSIX;
6772 for (i = 0; i < num_irqs; i++)
6773 np->ldg[i].irq = msi_vec[i].vector;
6774 np->num_ldg = num_irqs;
6775 }
6776
6777 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
6778 {
6779 #ifdef CONFIG_SPARC64
6780 struct of_device *op = np->op;
6781 const u32 *int_prop;
6782 int i;
6783
6784 int_prop = of_get_property(op->node, "interrupts", NULL);
6785 if (!int_prop)
6786 return -ENODEV;
6787
6788 for (i = 0; i < op->num_irqs; i++) {
6789 ldg_num_map[i] = int_prop[i];
6790 np->ldg[i].irq = op->irqs[i];
6791 }
6792
6793 np->num_ldg = op->num_irqs;
6794
6795 return 0;
6796 #else
6797 return -EINVAL;
6798 #endif
6799 }
6800
6801 static int __devinit niu_ldg_init(struct niu *np)
6802 {
6803 struct niu_parent *parent = np->parent;
6804 u8 ldg_num_map[NIU_NUM_LDG];
6805 int first_chan, num_chan;
6806 int i, err, ldg_rotor;
6807 u8 port;
6808
6809 np->num_ldg = 1;
6810 np->ldg[0].irq = np->dev->irq;
6811 if (parent->plat_type == PLAT_TYPE_NIU) {
6812 err = niu_n2_irq_init(np, ldg_num_map);
6813 if (err)
6814 return err;
6815 } else
6816 niu_try_msix(np, ldg_num_map);
6817
6818 port = np->port;
6819 for (i = 0; i < np->num_ldg; i++) {
6820 struct niu_ldg *lp = &np->ldg[i];
6821
6822 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
6823
6824 lp->np = np;
6825 lp->ldg_num = ldg_num_map[i];
6826 lp->timer = 2; /* XXX */
6827
6828 /* On N2 NIU the firmware has setup the SID mappings so they go
6829 * to the correct values that will route the LDG to the proper
6830 * interrupt in the NCU interrupt table.
6831 */
6832 if (np->parent->plat_type != PLAT_TYPE_NIU) {
6833 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
6834 if (err)
6835 return err;
6836 }
6837 }
6838
6839 /* We adopt the LDG assignment ordering used by the N2 NIU
6840 * 'interrupt' properties because that simplifies a lot of
6841 * things. This ordering is:
6842 *
6843 * MAC
6844 * MIF (if port zero)
6845 * SYSERR (if port zero)
6846 * RX channels
6847 * TX channels
6848 */
6849
6850 ldg_rotor = 0;
6851
6852 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
6853 LDN_MAC(port));
6854 if (err)
6855 return err;
6856
6857 ldg_rotor++;
6858 if (ldg_rotor == np->num_ldg)
6859 ldg_rotor = 0;
6860
6861 if (port == 0) {
6862 err = niu_ldg_assign_ldn(np, parent,
6863 ldg_num_map[ldg_rotor],
6864 LDN_MIF);
6865 if (err)
6866 return err;
6867
6868 ldg_rotor++;
6869 if (ldg_rotor == np->num_ldg)
6870 ldg_rotor = 0;
6871
6872 err = niu_ldg_assign_ldn(np, parent,
6873 ldg_num_map[ldg_rotor],
6874 LDN_DEVICE_ERROR);
6875 if (err)
6876 return err;
6877
6878 ldg_rotor++;
6879 if (ldg_rotor == np->num_ldg)
6880 ldg_rotor = 0;
6881
6882 }
6883
6884 first_chan = 0;
6885 for (i = 0; i < port; i++)
6886 first_chan += parent->rxchan_per_port[port];
6887 num_chan = parent->rxchan_per_port[port];
6888
6889 for (i = first_chan; i < (first_chan + num_chan); i++) {
6890 err = niu_ldg_assign_ldn(np, parent,
6891 ldg_num_map[ldg_rotor],
6892 LDN_RXDMA(i));
6893 if (err)
6894 return err;
6895 ldg_rotor++;
6896 if (ldg_rotor == np->num_ldg)
6897 ldg_rotor = 0;
6898 }
6899
6900 first_chan = 0;
6901 for (i = 0; i < port; i++)
6902 first_chan += parent->txchan_per_port[port];
6903 num_chan = parent->txchan_per_port[port];
6904 for (i = first_chan; i < (first_chan + num_chan); i++) {
6905 err = niu_ldg_assign_ldn(np, parent,
6906 ldg_num_map[ldg_rotor],
6907 LDN_TXDMA(i));
6908 if (err)
6909 return err;
6910 ldg_rotor++;
6911 if (ldg_rotor == np->num_ldg)
6912 ldg_rotor = 0;
6913 }
6914
6915 return 0;
6916 }
6917
6918 static void __devexit niu_ldg_free(struct niu *np)
6919 {
6920 if (np->flags & NIU_FLAGS_MSIX)
6921 pci_disable_msix(np->pdev);
6922 }
6923
6924 static int __devinit niu_get_of_props(struct niu *np)
6925 {
6926 #ifdef CONFIG_SPARC64
6927 struct net_device *dev = np->dev;
6928 struct device_node *dp;
6929 const char *phy_type;
6930 const u8 *mac_addr;
6931 int prop_len;
6932
6933 if (np->parent->plat_type == PLAT_TYPE_NIU)
6934 dp = np->op->node;
6935 else
6936 dp = pci_device_to_OF_node(np->pdev);
6937
6938 phy_type = of_get_property(dp, "phy-type", &prop_len);
6939 if (!phy_type) {
6940 dev_err(np->device, PFX "%s: OF node lacks "
6941 "phy-type property\n",
6942 dp->full_name);
6943 return -EINVAL;
6944 }
6945
6946 if (!strcmp(phy_type, "none"))
6947 return -ENODEV;
6948
6949 strcpy(np->vpd.phy_type, phy_type);
6950
6951 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6952 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
6953 dp->full_name, np->vpd.phy_type);
6954 return -EINVAL;
6955 }
6956
6957 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
6958 if (!mac_addr) {
6959 dev_err(np->device, PFX "%s: OF node lacks "
6960 "local-mac-address property\n",
6961 dp->full_name);
6962 return -EINVAL;
6963 }
6964 if (prop_len != dev->addr_len) {
6965 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
6966 "is wrong.\n",
6967 dp->full_name, prop_len);
6968 }
6969 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
6970 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6971 int i;
6972
6973 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
6974 dp->full_name);
6975 dev_err(np->device, PFX "%s: [ \n",
6976 dp->full_name);
6977 for (i = 0; i < 6; i++)
6978 printk("%02x ", dev->perm_addr[i]);
6979 printk("]\n");
6980 return -EINVAL;
6981 }
6982
6983 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6984
6985 return 0;
6986 #else
6987 return -EINVAL;
6988 #endif
6989 }
6990
6991 static int __devinit niu_get_invariants(struct niu *np)
6992 {
6993 int err, have_props;
6994 u32 offset;
6995
6996 err = niu_get_of_props(np);
6997 if (err == -ENODEV)
6998 return err;
6999
7000 have_props = !err;
7001
7002 err = niu_get_and_validate_port(np);
7003 if (err)
7004 return err;
7005
7006 err = niu_init_mac_ipp_pcs_base(np);
7007 if (err)
7008 return err;
7009
7010 if (!have_props) {
7011 if (np->parent->plat_type == PLAT_TYPE_NIU)
7012 return -EINVAL;
7013
7014 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
7015 offset = niu_pci_vpd_offset(np);
7016 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
7017 offset);
7018 if (offset)
7019 niu_pci_vpd_fetch(np, offset);
7020 nw64(ESPC_PIO_EN, 0);
7021
7022 if (np->flags & NIU_FLAGS_VPD_VALID)
7023 niu_pci_vpd_validate(np);
7024
7025 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
7026 err = niu_pci_probe_sprom(np);
7027 if (err)
7028 return err;
7029 }
7030 }
7031
7032 err = niu_probe_ports(np);
7033 if (err)
7034 return err;
7035
7036 niu_ldg_init(np);
7037
7038 niu_classifier_swstate_init(np);
7039 niu_link_config_init(np);
7040
7041 err = niu_determine_phy_disposition(np);
7042 if (!err)
7043 err = niu_init_link(np);
7044
7045 return err;
7046 }
7047
7048 static LIST_HEAD(niu_parent_list);
7049 static DEFINE_MUTEX(niu_parent_lock);
7050 static int niu_parent_index;
7051
7052 static ssize_t show_port_phy(struct device *dev,
7053 struct device_attribute *attr, char *buf)
7054 {
7055 struct platform_device *plat_dev = to_platform_device(dev);
7056 struct niu_parent *p = plat_dev->dev.platform_data;
7057 u32 port_phy = p->port_phy;
7058 char *orig_buf = buf;
7059 int i;
7060
7061 if (port_phy == PORT_PHY_UNKNOWN ||
7062 port_phy == PORT_PHY_INVALID)
7063 return 0;
7064
7065 for (i = 0; i < p->num_ports; i++) {
7066 const char *type_str;
7067 int type;
7068
7069 type = phy_decode(port_phy, i);
7070 if (type == PORT_TYPE_10G)
7071 type_str = "10G";
7072 else
7073 type_str = "1G";
7074 buf += sprintf(buf,
7075 (i == 0) ? "%s" : " %s",
7076 type_str);
7077 }
7078 buf += sprintf(buf, "\n");
7079 return buf - orig_buf;
7080 }
7081
7082 static ssize_t show_plat_type(struct device *dev,
7083 struct device_attribute *attr, char *buf)
7084 {
7085 struct platform_device *plat_dev = to_platform_device(dev);
7086 struct niu_parent *p = plat_dev->dev.platform_data;
7087 const char *type_str;
7088
7089 switch (p->plat_type) {
7090 case PLAT_TYPE_ATLAS:
7091 type_str = "atlas";
7092 break;
7093 case PLAT_TYPE_NIU:
7094 type_str = "niu";
7095 break;
7096 case PLAT_TYPE_VF_P0:
7097 type_str = "vf_p0";
7098 break;
7099 case PLAT_TYPE_VF_P1:
7100 type_str = "vf_p1";
7101 break;
7102 default:
7103 type_str = "unknown";
7104 break;
7105 }
7106
7107 return sprintf(buf, "%s\n", type_str);
7108 }
7109
7110 static ssize_t __show_chan_per_port(struct device *dev,
7111 struct device_attribute *attr, char *buf,
7112 int rx)
7113 {
7114 struct platform_device *plat_dev = to_platform_device(dev);
7115 struct niu_parent *p = plat_dev->dev.platform_data;
7116 char *orig_buf = buf;
7117 u8 *arr;
7118 int i;
7119
7120 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
7121
7122 for (i = 0; i < p->num_ports; i++) {
7123 buf += sprintf(buf,
7124 (i == 0) ? "%d" : " %d",
7125 arr[i]);
7126 }
7127 buf += sprintf(buf, "\n");
7128
7129 return buf - orig_buf;
7130 }
7131
7132 static ssize_t show_rxchan_per_port(struct device *dev,
7133 struct device_attribute *attr, char *buf)
7134 {
7135 return __show_chan_per_port(dev, attr, buf, 1);
7136 }
7137
7138 static ssize_t show_txchan_per_port(struct device *dev,
7139 struct device_attribute *attr, char *buf)
7140 {
7141 return __show_chan_per_port(dev, attr, buf, 1);
7142 }
7143
7144 static ssize_t show_num_ports(struct device *dev,
7145 struct device_attribute *attr, char *buf)
7146 {
7147 struct platform_device *plat_dev = to_platform_device(dev);
7148 struct niu_parent *p = plat_dev->dev.platform_data;
7149
7150 return sprintf(buf, "%d\n", p->num_ports);
7151 }
7152
7153 static struct device_attribute niu_parent_attributes[] = {
7154 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
7155 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
7156 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
7157 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
7158 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
7159 {}
7160 };
7161
7162 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
7163 union niu_parent_id *id,
7164 u8 ptype)
7165 {
7166 struct platform_device *plat_dev;
7167 struct niu_parent *p;
7168 int i;
7169
7170 niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
7171
7172 plat_dev = platform_device_register_simple("niu", niu_parent_index,
7173 NULL, 0);
7174 if (!plat_dev)
7175 return NULL;
7176
7177 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
7178 int err = device_create_file(&plat_dev->dev,
7179 &niu_parent_attributes[i]);
7180 if (err)
7181 goto fail_unregister;
7182 }
7183
7184 p = kzalloc(sizeof(*p), GFP_KERNEL);
7185 if (!p)
7186 goto fail_unregister;
7187
7188 p->index = niu_parent_index++;
7189
7190 plat_dev->dev.platform_data = p;
7191 p->plat_dev = plat_dev;
7192
7193 memcpy(&p->id, id, sizeof(*id));
7194 p->plat_type = ptype;
7195 INIT_LIST_HEAD(&p->list);
7196 atomic_set(&p->refcnt, 0);
7197 list_add(&p->list, &niu_parent_list);
7198 spin_lock_init(&p->lock);
7199
7200 p->rxdma_clock_divider = 7500;
7201
7202 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
7203 if (p->plat_type == PLAT_TYPE_NIU)
7204 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
7205
7206 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
7207 int index = i - CLASS_CODE_USER_PROG1;
7208
7209 p->tcam_key[index] = TCAM_KEY_TSEL;
7210 p->flow_key[index] = (FLOW_KEY_IPSA |
7211 FLOW_KEY_IPDA |
7212 FLOW_KEY_PROTO |
7213 (FLOW_KEY_L4_BYTE12 <<
7214 FLOW_KEY_L4_0_SHIFT) |
7215 (FLOW_KEY_L4_BYTE12 <<
7216 FLOW_KEY_L4_1_SHIFT));
7217 }
7218
7219 for (i = 0; i < LDN_MAX + 1; i++)
7220 p->ldg_map[i] = LDG_INVALID;
7221
7222 return p;
7223
7224 fail_unregister:
7225 platform_device_unregister(plat_dev);
7226 return NULL;
7227 }
7228
7229 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
7230 union niu_parent_id *id,
7231 u8 ptype)
7232 {
7233 struct niu_parent *p, *tmp;
7234 int port = np->port;
7235
7236 niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
7237 ptype, port);
7238
7239 mutex_lock(&niu_parent_lock);
7240 p = NULL;
7241 list_for_each_entry(tmp, &niu_parent_list, list) {
7242 if (!memcmp(id, &tmp->id, sizeof(*id))) {
7243 p = tmp;
7244 break;
7245 }
7246 }
7247 if (!p)
7248 p = niu_new_parent(np, id, ptype);
7249
7250 if (p) {
7251 char port_name[6];
7252 int err;
7253
7254 sprintf(port_name, "port%d", port);
7255 err = sysfs_create_link(&p->plat_dev->dev.kobj,
7256 &np->device->kobj,
7257 port_name);
7258 if (!err) {
7259 p->ports[port] = np;
7260 atomic_inc(&p->refcnt);
7261 }
7262 }
7263 mutex_unlock(&niu_parent_lock);
7264
7265 return p;
7266 }
7267
7268 static void niu_put_parent(struct niu *np)
7269 {
7270 struct niu_parent *p = np->parent;
7271 u8 port = np->port;
7272 char port_name[6];
7273
7274 BUG_ON(!p || p->ports[port] != np);
7275
7276 niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
7277
7278 sprintf(port_name, "port%d", port);
7279
7280 mutex_lock(&niu_parent_lock);
7281
7282 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
7283
7284 p->ports[port] = NULL;
7285 np->parent = NULL;
7286
7287 if (atomic_dec_and_test(&p->refcnt)) {
7288 list_del(&p->list);
7289 platform_device_unregister(p->plat_dev);
7290 }
7291
7292 mutex_unlock(&niu_parent_lock);
7293 }
7294
7295 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
7296 u64 *handle, gfp_t flag)
7297 {
7298 dma_addr_t dh;
7299 void *ret;
7300
7301 ret = dma_alloc_coherent(dev, size, &dh, flag);
7302 if (ret)
7303 *handle = dh;
7304 return ret;
7305 }
7306
7307 static void niu_pci_free_coherent(struct device *dev, size_t size,
7308 void *cpu_addr, u64 handle)
7309 {
7310 dma_free_coherent(dev, size, cpu_addr, handle);
7311 }
7312
7313 static u64 niu_pci_map_page(struct device *dev, struct page *page,
7314 unsigned long offset, size_t size,
7315 enum dma_data_direction direction)
7316 {
7317 return dma_map_page(dev, page, offset, size, direction);
7318 }
7319
7320 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
7321 size_t size, enum dma_data_direction direction)
7322 {
7323 return dma_unmap_page(dev, dma_address, size, direction);
7324 }
7325
7326 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
7327 size_t size,
7328 enum dma_data_direction direction)
7329 {
7330 return dma_map_single(dev, cpu_addr, size, direction);
7331 }
7332
7333 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
7334 size_t size,
7335 enum dma_data_direction direction)
7336 {
7337 dma_unmap_single(dev, dma_address, size, direction);
7338 }
7339
7340 static const struct niu_ops niu_pci_ops = {
7341 .alloc_coherent = niu_pci_alloc_coherent,
7342 .free_coherent = niu_pci_free_coherent,
7343 .map_page = niu_pci_map_page,
7344 .unmap_page = niu_pci_unmap_page,
7345 .map_single = niu_pci_map_single,
7346 .unmap_single = niu_pci_unmap_single,
7347 };
7348
7349 static void __devinit niu_driver_version(void)
7350 {
7351 static int niu_version_printed;
7352
7353 if (niu_version_printed++ == 0)
7354 pr_info("%s", version);
7355 }
7356
7357 static struct net_device * __devinit niu_alloc_and_init(
7358 struct device *gen_dev, struct pci_dev *pdev,
7359 struct of_device *op, const struct niu_ops *ops,
7360 u8 port)
7361 {
7362 struct net_device *dev = alloc_etherdev(sizeof(struct niu));
7363 struct niu *np;
7364
7365 if (!dev) {
7366 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
7367 return NULL;
7368 }
7369
7370 SET_NETDEV_DEV(dev, gen_dev);
7371
7372 np = netdev_priv(dev);
7373 np->dev = dev;
7374 np->pdev = pdev;
7375 np->op = op;
7376 np->device = gen_dev;
7377 np->ops = ops;
7378
7379 np->msg_enable = niu_debug;
7380
7381 spin_lock_init(&np->lock);
7382 INIT_WORK(&np->reset_task, niu_reset_task);
7383
7384 np->port = port;
7385
7386 return dev;
7387 }
7388
7389 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
7390 {
7391 dev->open = niu_open;
7392 dev->stop = niu_close;
7393 dev->get_stats = niu_get_stats;
7394 dev->set_multicast_list = niu_set_rx_mode;
7395 dev->set_mac_address = niu_set_mac_addr;
7396 dev->do_ioctl = niu_ioctl;
7397 dev->tx_timeout = niu_tx_timeout;
7398 dev->hard_start_xmit = niu_start_xmit;
7399 dev->ethtool_ops = &niu_ethtool_ops;
7400 dev->watchdog_timeo = NIU_TX_TIMEOUT;
7401 dev->change_mtu = niu_change_mtu;
7402 }
7403
7404 static void __devinit niu_device_announce(struct niu *np)
7405 {
7406 struct net_device *dev = np->dev;
7407 int i;
7408
7409 pr_info("%s: NIU Ethernet ", dev->name);
7410 for (i = 0; i < 6; i++)
7411 printk("%2.2x%c", dev->dev_addr[i],
7412 i == 5 ? '\n' : ':');
7413
7414 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
7415 dev->name,
7416 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
7417 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
7418 (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
7419 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
7420 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
7421 np->vpd.phy_type);
7422 }
7423
7424 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
7425 const struct pci_device_id *ent)
7426 {
7427 unsigned long niureg_base, niureg_len;
7428 union niu_parent_id parent_id;
7429 struct net_device *dev;
7430 struct niu *np;
7431 int err, pos;
7432 u64 dma_mask;
7433 u16 val16;
7434
7435 niu_driver_version();
7436
7437 err = pci_enable_device(pdev);
7438 if (err) {
7439 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
7440 "aborting.\n");
7441 return err;
7442 }
7443
7444 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
7445 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
7446 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
7447 "base addresses, aborting.\n");
7448 err = -ENODEV;
7449 goto err_out_disable_pdev;
7450 }
7451
7452 err = pci_request_regions(pdev, DRV_MODULE_NAME);
7453 if (err) {
7454 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
7455 "aborting.\n");
7456 goto err_out_disable_pdev;
7457 }
7458
7459 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
7460 if (pos <= 0) {
7461 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
7462 "aborting.\n");
7463 goto err_out_free_res;
7464 }
7465
7466 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
7467 &niu_pci_ops, PCI_FUNC(pdev->devfn));
7468 if (!dev) {
7469 err = -ENOMEM;
7470 goto err_out_free_res;
7471 }
7472 np = netdev_priv(dev);
7473
7474 memset(&parent_id, 0, sizeof(parent_id));
7475 parent_id.pci.domain = pci_domain_nr(pdev->bus);
7476 parent_id.pci.bus = pdev->bus->number;
7477 parent_id.pci.device = PCI_SLOT(pdev->devfn);
7478
7479 np->parent = niu_get_parent(np, &parent_id,
7480 PLAT_TYPE_ATLAS);
7481 if (!np->parent) {
7482 err = -ENOMEM;
7483 goto err_out_free_dev;
7484 }
7485
7486 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
7487 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
7488 val16 |= (PCI_EXP_DEVCTL_CERE |
7489 PCI_EXP_DEVCTL_NFERE |
7490 PCI_EXP_DEVCTL_FERE |
7491 PCI_EXP_DEVCTL_URRE |
7492 PCI_EXP_DEVCTL_RELAX_EN);
7493 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
7494
7495 dma_mask = DMA_44BIT_MASK;
7496 err = pci_set_dma_mask(pdev, dma_mask);
7497 if (!err) {
7498 dev->features |= NETIF_F_HIGHDMA;
7499 err = pci_set_consistent_dma_mask(pdev, dma_mask);
7500 if (err) {
7501 dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
7502 "DMA for consistent allocations, "
7503 "aborting.\n");
7504 goto err_out_release_parent;
7505 }
7506 }
7507 if (err || dma_mask == DMA_32BIT_MASK) {
7508 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7509 if (err) {
7510 dev_err(&pdev->dev, PFX "No usable DMA configuration, "
7511 "aborting.\n");
7512 goto err_out_release_parent;
7513 }
7514 }
7515
7516 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7517
7518 niureg_base = pci_resource_start(pdev, 0);
7519 niureg_len = pci_resource_len(pdev, 0);
7520
7521 np->regs = ioremap_nocache(niureg_base, niureg_len);
7522 if (!np->regs) {
7523 dev_err(&pdev->dev, PFX "Cannot map device registers, "
7524 "aborting.\n");
7525 err = -ENOMEM;
7526 goto err_out_release_parent;
7527 }
7528
7529 pci_set_master(pdev);
7530 pci_save_state(pdev);
7531
7532 dev->irq = pdev->irq;
7533
7534 niu_assign_netdev_ops(dev);
7535
7536 err = niu_get_invariants(np);
7537 if (err) {
7538 if (err != -ENODEV)
7539 dev_err(&pdev->dev, PFX "Problem fetching invariants "
7540 "of chip, aborting.\n");
7541 goto err_out_iounmap;
7542 }
7543
7544 err = register_netdev(dev);
7545 if (err) {
7546 dev_err(&pdev->dev, PFX "Cannot register net device, "
7547 "aborting.\n");
7548 goto err_out_iounmap;
7549 }
7550
7551 pci_set_drvdata(pdev, dev);
7552
7553 niu_device_announce(np);
7554
7555 return 0;
7556
7557 err_out_iounmap:
7558 if (np->regs) {
7559 iounmap(np->regs);
7560 np->regs = NULL;
7561 }
7562
7563 err_out_release_parent:
7564 niu_put_parent(np);
7565
7566 err_out_free_dev:
7567 free_netdev(dev);
7568
7569 err_out_free_res:
7570 pci_release_regions(pdev);
7571
7572 err_out_disable_pdev:
7573 pci_disable_device(pdev);
7574 pci_set_drvdata(pdev, NULL);
7575
7576 return err;
7577 }
7578
7579 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
7580 {
7581 struct net_device *dev = pci_get_drvdata(pdev);
7582
7583 if (dev) {
7584 struct niu *np = netdev_priv(dev);
7585
7586 unregister_netdev(dev);
7587 if (np->regs) {
7588 iounmap(np->regs);
7589 np->regs = NULL;
7590 }
7591
7592 niu_ldg_free(np);
7593
7594 niu_put_parent(np);
7595
7596 free_netdev(dev);
7597 pci_release_regions(pdev);
7598 pci_disable_device(pdev);
7599 pci_set_drvdata(pdev, NULL);
7600 }
7601 }
7602
7603 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
7604 {
7605 struct net_device *dev = pci_get_drvdata(pdev);
7606 struct niu *np = netdev_priv(dev);
7607 unsigned long flags;
7608
7609 if (!netif_running(dev))
7610 return 0;
7611
7612 flush_scheduled_work();
7613 niu_netif_stop(np);
7614
7615 del_timer_sync(&np->timer);
7616
7617 spin_lock_irqsave(&np->lock, flags);
7618 niu_enable_interrupts(np, 0);
7619 spin_unlock_irqrestore(&np->lock, flags);
7620
7621 netif_device_detach(dev);
7622
7623 spin_lock_irqsave(&np->lock, flags);
7624 niu_stop_hw(np);
7625 spin_unlock_irqrestore(&np->lock, flags);
7626
7627 pci_save_state(pdev);
7628
7629 return 0;
7630 }
7631
7632 static int niu_resume(struct pci_dev *pdev)
7633 {
7634 struct net_device *dev = pci_get_drvdata(pdev);
7635 struct niu *np = netdev_priv(dev);
7636 unsigned long flags;
7637 int err;
7638
7639 if (!netif_running(dev))
7640 return 0;
7641
7642 pci_restore_state(pdev);
7643
7644 netif_device_attach(dev);
7645
7646 spin_lock_irqsave(&np->lock, flags);
7647
7648 err = niu_init_hw(np);
7649 if (!err) {
7650 np->timer.expires = jiffies + HZ;
7651 add_timer(&np->timer);
7652 niu_netif_start(np);
7653 }
7654
7655 spin_unlock_irqrestore(&np->lock, flags);
7656
7657 return err;
7658 }
7659
7660 static struct pci_driver niu_pci_driver = {
7661 .name = DRV_MODULE_NAME,
7662 .id_table = niu_pci_tbl,
7663 .probe = niu_pci_init_one,
7664 .remove = __devexit_p(niu_pci_remove_one),
7665 .suspend = niu_suspend,
7666 .resume = niu_resume,
7667 };
7668
7669 #ifdef CONFIG_SPARC64
7670 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
7671 u64 *dma_addr, gfp_t flag)
7672 {
7673 unsigned long order = get_order(size);
7674 unsigned long page = __get_free_pages(flag, order);
7675
7676 if (page == 0UL)
7677 return NULL;
7678 memset((char *)page, 0, PAGE_SIZE << order);
7679 *dma_addr = __pa(page);
7680
7681 return (void *) page;
7682 }
7683
7684 static void niu_phys_free_coherent(struct device *dev, size_t size,
7685 void *cpu_addr, u64 handle)
7686 {
7687 unsigned long order = get_order(size);
7688
7689 free_pages((unsigned long) cpu_addr, order);
7690 }
7691
7692 static u64 niu_phys_map_page(struct device *dev, struct page *page,
7693 unsigned long offset, size_t size,
7694 enum dma_data_direction direction)
7695 {
7696 return page_to_phys(page) + offset;
7697 }
7698
7699 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
7700 size_t size, enum dma_data_direction direction)
7701 {
7702 /* Nothing to do. */
7703 }
7704
7705 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
7706 size_t size,
7707 enum dma_data_direction direction)
7708 {
7709 return __pa(cpu_addr);
7710 }
7711
7712 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
7713 size_t size,
7714 enum dma_data_direction direction)
7715 {
7716 /* Nothing to do. */
7717 }
7718
7719 static const struct niu_ops niu_phys_ops = {
7720 .alloc_coherent = niu_phys_alloc_coherent,
7721 .free_coherent = niu_phys_free_coherent,
7722 .map_page = niu_phys_map_page,
7723 .unmap_page = niu_phys_unmap_page,
7724 .map_single = niu_phys_map_single,
7725 .unmap_single = niu_phys_unmap_single,
7726 };
7727
7728 static unsigned long res_size(struct resource *r)
7729 {
7730 return r->end - r->start + 1UL;
7731 }
7732
7733 static int __devinit niu_of_probe(struct of_device *op,
7734 const struct of_device_id *match)
7735 {
7736 union niu_parent_id parent_id;
7737 struct net_device *dev;
7738 struct niu *np;
7739 const u32 *reg;
7740 int err;
7741
7742 niu_driver_version();
7743
7744 reg = of_get_property(op->node, "reg", NULL);
7745 if (!reg) {
7746 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
7747 op->node->full_name);
7748 return -ENODEV;
7749 }
7750
7751 dev = niu_alloc_and_init(&op->dev, NULL, op,
7752 &niu_phys_ops, reg[0] & 0x1);
7753 if (!dev) {
7754 err = -ENOMEM;
7755 goto err_out;
7756 }
7757 np = netdev_priv(dev);
7758
7759 memset(&parent_id, 0, sizeof(parent_id));
7760 parent_id.of = of_get_parent(op->node);
7761
7762 np->parent = niu_get_parent(np, &parent_id,
7763 PLAT_TYPE_NIU);
7764 if (!np->parent) {
7765 err = -ENOMEM;
7766 goto err_out_free_dev;
7767 }
7768
7769 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7770
7771 np->regs = of_ioremap(&op->resource[1], 0,
7772 res_size(&op->resource[1]),
7773 "niu regs");
7774 if (!np->regs) {
7775 dev_err(&op->dev, PFX "Cannot map device registers, "
7776 "aborting.\n");
7777 err = -ENOMEM;
7778 goto err_out_release_parent;
7779 }
7780
7781 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
7782 res_size(&op->resource[2]),
7783 "niu vregs-1");
7784 if (!np->vir_regs_1) {
7785 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
7786 "aborting.\n");
7787 err = -ENOMEM;
7788 goto err_out_iounmap;
7789 }
7790
7791 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
7792 res_size(&op->resource[3]),
7793 "niu vregs-2");
7794 if (!np->vir_regs_2) {
7795 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
7796 "aborting.\n");
7797 err = -ENOMEM;
7798 goto err_out_iounmap;
7799 }
7800
7801 niu_assign_netdev_ops(dev);
7802
7803 err = niu_get_invariants(np);
7804 if (err) {
7805 if (err != -ENODEV)
7806 dev_err(&op->dev, PFX "Problem fetching invariants "
7807 "of chip, aborting.\n");
7808 goto err_out_iounmap;
7809 }
7810
7811 err = register_netdev(dev);
7812 if (err) {
7813 dev_err(&op->dev, PFX "Cannot register net device, "
7814 "aborting.\n");
7815 goto err_out_iounmap;
7816 }
7817
7818 dev_set_drvdata(&op->dev, dev);
7819
7820 niu_device_announce(np);
7821
7822 return 0;
7823
7824 err_out_iounmap:
7825 if (np->vir_regs_1) {
7826 of_iounmap(&op->resource[2], np->vir_regs_1,
7827 res_size(&op->resource[2]));
7828 np->vir_regs_1 = NULL;
7829 }
7830
7831 if (np->vir_regs_2) {
7832 of_iounmap(&op->resource[3], np->vir_regs_2,
7833 res_size(&op->resource[3]));
7834 np->vir_regs_2 = NULL;
7835 }
7836
7837 if (np->regs) {
7838 of_iounmap(&op->resource[1], np->regs,
7839 res_size(&op->resource[1]));
7840 np->regs = NULL;
7841 }
7842
7843 err_out_release_parent:
7844 niu_put_parent(np);
7845
7846 err_out_free_dev:
7847 free_netdev(dev);
7848
7849 err_out:
7850 return err;
7851 }
7852
7853 static int __devexit niu_of_remove(struct of_device *op)
7854 {
7855 struct net_device *dev = dev_get_drvdata(&op->dev);
7856
7857 if (dev) {
7858 struct niu *np = netdev_priv(dev);
7859
7860 unregister_netdev(dev);
7861
7862 if (np->vir_regs_1) {
7863 of_iounmap(&op->resource[2], np->vir_regs_1,
7864 res_size(&op->resource[2]));
7865 np->vir_regs_1 = NULL;
7866 }
7867
7868 if (np->vir_regs_2) {
7869 of_iounmap(&op->resource[3], np->vir_regs_2,
7870 res_size(&op->resource[3]));
7871 np->vir_regs_2 = NULL;
7872 }
7873
7874 if (np->regs) {
7875 of_iounmap(&op->resource[1], np->regs,
7876 res_size(&op->resource[1]));
7877 np->regs = NULL;
7878 }
7879
7880 niu_ldg_free(np);
7881
7882 niu_put_parent(np);
7883
7884 free_netdev(dev);
7885 dev_set_drvdata(&op->dev, NULL);
7886 }
7887 return 0;
7888 }
7889
7890 static struct of_device_id niu_match[] = {
7891 {
7892 .name = "network",
7893 .compatible = "SUNW,niusl",
7894 },
7895 {},
7896 };
7897 MODULE_DEVICE_TABLE(of, niu_match);
7898
7899 static struct of_platform_driver niu_of_driver = {
7900 .name = "niu",
7901 .match_table = niu_match,
7902 .probe = niu_of_probe,
7903 .remove = __devexit_p(niu_of_remove),
7904 };
7905
7906 #endif /* CONFIG_SPARC64 */
7907
7908 static int __init niu_init(void)
7909 {
7910 int err = 0;
7911
7912 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
7913
7914 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
7915
7916 #ifdef CONFIG_SPARC64
7917 err = of_register_driver(&niu_of_driver, &of_bus_type);
7918 #endif
7919
7920 if (!err) {
7921 err = pci_register_driver(&niu_pci_driver);
7922 #ifdef CONFIG_SPARC64
7923 if (err)
7924 of_unregister_driver(&niu_of_driver);
7925 #endif
7926 }
7927
7928 return err;
7929 }
7930
7931 static void __exit niu_exit(void)
7932 {
7933 pci_unregister_driver(&niu_pci_driver);
7934 #ifdef CONFIG_SPARC64
7935 of_unregister_driver(&niu_of_driver);
7936 #endif
7937 }
7938
7939 module_init(niu_init);
7940 module_exit(niu_exit);
SocketAccessConTroL development