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sparse pointer use of zero as null
[linux-2.6/linux-loongson.git] / drivers / net / niu.c
blobed1f9bbb2a32e5265e13cca49b46e807b32e9c69
1 /* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4 */
5
6 #include <linux/module.h>
7 #include <linux/init.h>
8 #include <linux/pci.h>
9 #include <linux/dma-mapping.h>
10 #include <linux/netdevice.h>
11 #include <linux/ethtool.h>
12 #include <linux/etherdevice.h>
13 #include <linux/platform_device.h>
14 #include <linux/delay.h>
15 #include <linux/bitops.h>
16 #include <linux/mii.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ip.h>
20 #include <linux/in.h>
21 #include <linux/ipv6.h>
22 #include <linux/log2.h>
23 #include <linux/jiffies.h>
24 #include <linux/crc32.h>
25
26 #include <linux/io.h>
27
28 #ifdef CONFIG_SPARC64
29 #include <linux/of_device.h>
30 #endif
31
32 #include "niu.h"
33
34 #define DRV_MODULE_NAME "niu"
35 #define PFX DRV_MODULE_NAME ": "
36 #define DRV_MODULE_VERSION "0.5"
37 #define DRV_MODULE_RELDATE "October 5, 2007"
38
39 static char version[] __devinitdata =
40 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
41
42 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
43 MODULE_DESCRIPTION("NIU ethernet driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(DRV_MODULE_VERSION);
46
47 #ifndef DMA_44BIT_MASK
48 #define DMA_44BIT_MASK 0x00000fffffffffffULL
49 #endif
50
51 #ifndef readq
52 static u64 readq(void __iomem *reg)
53 {
54 return (((u64)readl(reg + 0x4UL) << 32) |
55 (u64)readl(reg));
56 }
57
58 static void writeq(u64 val, void __iomem *reg)
59 {
60 writel(val & 0xffffffff, reg);
61 writel(val >> 32, reg + 0x4UL);
62 }
63 #endif
64
65 static struct pci_device_id niu_pci_tbl[] = {
66 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
67 {}
68 };
69
70 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
71
72 #define NIU_TX_TIMEOUT (5 * HZ)
73
74 #define nr64(reg) readq(np->regs + (reg))
75 #define nw64(reg, val) writeq((val), np->regs + (reg))
76
77 #define nr64_mac(reg) readq(np->mac_regs + (reg))
78 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
79
80 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
81 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
82
83 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
84 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
85
86 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
87 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
88
89 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
90
91 static int niu_debug;
92 static int debug = -1;
93 module_param(debug, int, 0);
94 MODULE_PARM_DESC(debug, "NIU debug level");
95
96 #define niudbg(TYPE, f, a...) \
97 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
98 printk(KERN_DEBUG PFX f, ## a); \
99 } while (0)
100
101 #define niuinfo(TYPE, f, a...) \
102 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
103 printk(KERN_INFO PFX f, ## a); \
104 } while (0)
105
106 #define niuwarn(TYPE, f, a...) \
107 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
108 printk(KERN_WARNING PFX f, ## a); \
109 } while (0)
110
111 #define niu_lock_parent(np, flags) \
112 spin_lock_irqsave(&np->parent->lock, flags)
113 #define niu_unlock_parent(np, flags) \
114 spin_unlock_irqrestore(&np->parent->lock, flags)
115
116 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
117 u64 bits, int limit, int delay)
118 {
119 while (--limit >= 0) {
120 u64 val = nr64_mac(reg);
121
122 if (!(val & bits))
123 break;
124 udelay(delay);
125 }
126 if (limit < 0)
127 return -ENODEV;
128 return 0;
129 }
130
131 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
132 u64 bits, int limit, int delay,
133 const char *reg_name)
134 {
135 int err;
136
137 nw64_mac(reg, bits);
138 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
139 if (err)
140 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
141 "would not clear, val[%llx]\n",
142 np->dev->name, (unsigned long long) bits, reg_name,
143 (unsigned long long) nr64_mac(reg));
144 return err;
145 }
146
147 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
148 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
149 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
150 })
151
152 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
153 u64 bits, int limit, int delay)
154 {
155 while (--limit >= 0) {
156 u64 val = nr64_ipp(reg);
157
158 if (!(val & bits))
159 break;
160 udelay(delay);
161 }
162 if (limit < 0)
163 return -ENODEV;
164 return 0;
165 }
166
167 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
168 u64 bits, int limit, int delay,
169 const char *reg_name)
170 {
171 int err;
172 u64 val;
173
174 val = nr64_ipp(reg);
175 val |= bits;
176 nw64_ipp(reg, val);
177
178 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
179 if (err)
180 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
181 "would not clear, val[%llx]\n",
182 np->dev->name, (unsigned long long) bits, reg_name,
183 (unsigned long long) nr64_ipp(reg));
184 return err;
185 }
186
187 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
188 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
189 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
190 })
191
192 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
193 u64 bits, int limit, int delay)
194 {
195 while (--limit >= 0) {
196 u64 val = nr64(reg);
197
198 if (!(val & bits))
199 break;
200 udelay(delay);
201 }
202 if (limit < 0)
203 return -ENODEV;
204 return 0;
205 }
206
207 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
208 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
209 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
210 })
211
212 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
213 u64 bits, int limit, int delay,
214 const char *reg_name)
215 {
216 int err;
217
218 nw64(reg, bits);
219 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
220 if (err)
221 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
222 "would not clear, val[%llx]\n",
223 np->dev->name, (unsigned long long) bits, reg_name,
224 (unsigned long long) nr64(reg));
225 return err;
226 }
227
228 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
229 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
230 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
231 })
232
233 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
234 {
235 u64 val = (u64) lp->timer;
236
237 if (on)
238 val |= LDG_IMGMT_ARM;
239
240 nw64(LDG_IMGMT(lp->ldg_num), val);
241 }
242
243 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
244 {
245 unsigned long mask_reg, bits;
246 u64 val;
247
248 if (ldn < 0 || ldn > LDN_MAX)
249 return -EINVAL;
250
251 if (ldn < 64) {
252 mask_reg = LD_IM0(ldn);
253 bits = LD_IM0_MASK;
254 } else {
255 mask_reg = LD_IM1(ldn - 64);
256 bits = LD_IM1_MASK;
257 }
258
259 val = nr64(mask_reg);
260 if (on)
261 val &= ~bits;
262 else
263 val |= bits;
264 nw64(mask_reg, val);
265
266 return 0;
267 }
268
269 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
270 {
271 struct niu_parent *parent = np->parent;
272 int i;
273
274 for (i = 0; i <= LDN_MAX; i++) {
275 int err;
276
277 if (parent->ldg_map[i] != lp->ldg_num)
278 continue;
279
280 err = niu_ldn_irq_enable(np, i, on);
281 if (err)
282 return err;
283 }
284 return 0;
285 }
286
287 static int niu_enable_interrupts(struct niu *np, int on)
288 {
289 int i;
290
291 for (i = 0; i < np->num_ldg; i++) {
292 struct niu_ldg *lp = &np->ldg[i];
293 int err;
294
295 err = niu_enable_ldn_in_ldg(np, lp, on);
296 if (err)
297 return err;
298 }
299 for (i = 0; i < np->num_ldg; i++)
300 niu_ldg_rearm(np, &np->ldg[i], on);
301
302 return 0;
303 }
304
305 static u32 phy_encode(u32 type, int port)
306 {
307 return (type << (port * 2));
308 }
309
310 static u32 phy_decode(u32 val, int port)
311 {
312 return (val >> (port * 2)) & PORT_TYPE_MASK;
313 }
314
315 static int mdio_wait(struct niu *np)
316 {
317 int limit = 1000;
318 u64 val;
319
320 while (--limit > 0) {
321 val = nr64(MIF_FRAME_OUTPUT);
322 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
323 return val & MIF_FRAME_OUTPUT_DATA;
324
325 udelay(10);
326 }
327
328 return -ENODEV;
329 }
330
331 static int mdio_read(struct niu *np, int port, int dev, int reg)
332 {
333 int err;
334
335 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
336 err = mdio_wait(np);
337 if (err < 0)
338 return err;
339
340 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
341 return mdio_wait(np);
342 }
343
344 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
345 {
346 int err;
347
348 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
349 err = mdio_wait(np);
350 if (err < 0)
351 return err;
352
353 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
354 err = mdio_wait(np);
355 if (err < 0)
356 return err;
357
358 return 0;
359 }
360
361 static int mii_read(struct niu *np, int port, int reg)
362 {
363 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
364 return mdio_wait(np);
365 }
366
367 static int mii_write(struct niu *np, int port, int reg, int data)
368 {
369 int err;
370
371 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
372 err = mdio_wait(np);
373 if (err < 0)
374 return err;
375
376 return 0;
377 }
378
379 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
380 {
381 int err;
382
383 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
384 ESR2_TI_PLL_TX_CFG_L(channel),
385 val & 0xffff);
386 if (!err)
387 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
388 ESR2_TI_PLL_TX_CFG_H(channel),
389 val >> 16);
390 return err;
391 }
392
393 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
394 {
395 int err;
396
397 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
398 ESR2_TI_PLL_RX_CFG_L(channel),
399 val & 0xffff);
400 if (!err)
401 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
402 ESR2_TI_PLL_RX_CFG_H(channel),
403 val >> 16);
404 return err;
405 }
406
407 /* Mode is always 10G fiber. */
408 static int serdes_init_niu(struct niu *np)
409 {
410 struct niu_link_config *lp = &np->link_config;
411 u32 tx_cfg, rx_cfg;
412 unsigned long i;
413
414 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
415 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
416 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
417 PLL_RX_CFG_EQ_LP_ADAPTIVE);
418
419 if (lp->loopback_mode == LOOPBACK_PHY) {
420 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
421
422 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
423 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
424
425 tx_cfg |= PLL_TX_CFG_ENTEST;
426 rx_cfg |= PLL_RX_CFG_ENTEST;
427 }
428
429 /* Initialize all 4 lanes of the SERDES. */
430 for (i = 0; i < 4; i++) {
431 int err = esr2_set_tx_cfg(np, i, tx_cfg);
432 if (err)
433 return err;
434 }
435
436 for (i = 0; i < 4; i++) {
437 int err = esr2_set_rx_cfg(np, i, rx_cfg);
438 if (err)
439 return err;
440 }
441
442 return 0;
443 }
444
445 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
446 {
447 int err;
448
449 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
450 if (err >= 0) {
451 *val = (err & 0xffff);
452 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
453 ESR_RXTX_CTRL_H(chan));
454 if (err >= 0)
455 *val |= ((err & 0xffff) << 16);
456 err = 0;
457 }
458 return err;
459 }
460
461 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
462 {
463 int err;
464
465 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
466 ESR_GLUE_CTRL0_L(chan));
467 if (err >= 0) {
468 *val = (err & 0xffff);
469 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
470 ESR_GLUE_CTRL0_H(chan));
471 if (err >= 0) {
472 *val |= ((err & 0xffff) << 16);
473 err = 0;
474 }
475 }
476 return err;
477 }
478
479 static int esr_read_reset(struct niu *np, u32 *val)
480 {
481 int err;
482
483 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
484 ESR_RXTX_RESET_CTRL_L);
485 if (err >= 0) {
486 *val = (err & 0xffff);
487 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
488 ESR_RXTX_RESET_CTRL_H);
489 if (err >= 0) {
490 *val |= ((err & 0xffff) << 16);
491 err = 0;
492 }
493 }
494 return err;
495 }
496
497 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
498 {
499 int err;
500
501 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
502 ESR_RXTX_CTRL_L(chan), val & 0xffff);
503 if (!err)
504 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
505 ESR_RXTX_CTRL_H(chan), (val >> 16));
506 return err;
507 }
508
509 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
510 {
511 int err;
512
513 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
514 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
515 if (!err)
516 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
517 ESR_GLUE_CTRL0_H(chan), (val >> 16));
518 return err;
519 }
520
521 static int esr_reset(struct niu *np)
522 {
523 u32 reset;
524 int err;
525
526 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
527 ESR_RXTX_RESET_CTRL_L, 0x0000);
528 if (err)
529 return err;
530 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
531 ESR_RXTX_RESET_CTRL_H, 0xffff);
532 if (err)
533 return err;
534 udelay(200);
535
536 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
537 ESR_RXTX_RESET_CTRL_L, 0xffff);
538 if (err)
539 return err;
540 udelay(200);
541
542 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
543 ESR_RXTX_RESET_CTRL_H, 0x0000);
544 if (err)
545 return err;
546 udelay(200);
547
548 err = esr_read_reset(np, &reset);
549 if (err)
550 return err;
551 if (reset != 0) {
552 dev_err(np->device, PFX "Port %u ESR_RESET "
553 "did not clear [%08x]\n",
554 np->port, reset);
555 return -ENODEV;
556 }
557
558 return 0;
559 }
560
561 static int serdes_init_10g(struct niu *np)
562 {
563 struct niu_link_config *lp = &np->link_config;
564 unsigned long ctrl_reg, test_cfg_reg, i;
565 u64 ctrl_val, test_cfg_val, sig, mask, val;
566 int err;
567
568 switch (np->port) {
569 case 0:
570 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
571 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
572 break;
573 case 1:
574 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
575 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
576 break;
577
578 default:
579 return -EINVAL;
580 }
581 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
582 ENET_SERDES_CTRL_SDET_1 |
583 ENET_SERDES_CTRL_SDET_2 |
584 ENET_SERDES_CTRL_SDET_3 |
585 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
586 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
587 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
588 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
589 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
590 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
591 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
592 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
593 test_cfg_val = 0;
594
595 if (lp->loopback_mode == LOOPBACK_PHY) {
596 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
597 ENET_SERDES_TEST_MD_0_SHIFT) |
598 (ENET_TEST_MD_PAD_LOOPBACK <<
599 ENET_SERDES_TEST_MD_1_SHIFT) |
600 (ENET_TEST_MD_PAD_LOOPBACK <<
601 ENET_SERDES_TEST_MD_2_SHIFT) |
602 (ENET_TEST_MD_PAD_LOOPBACK <<
603 ENET_SERDES_TEST_MD_3_SHIFT));
604 }
605
606 nw64(ctrl_reg, ctrl_val);
607 nw64(test_cfg_reg, test_cfg_val);
608
609 /* Initialize all 4 lanes of the SERDES. */
610 for (i = 0; i < 4; i++) {
611 u32 rxtx_ctrl, glue0;
612
613 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
614 if (err)
615 return err;
616 err = esr_read_glue0(np, i, &glue0);
617 if (err)
618 return err;
619
620 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
621 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
622 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
623
624 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
625 ESR_GLUE_CTRL0_THCNT |
626 ESR_GLUE_CTRL0_BLTIME);
627 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
628 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
629 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
630 (BLTIME_300_CYCLES <<
631 ESR_GLUE_CTRL0_BLTIME_SHIFT));
632
633 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
634 if (err)
635 return err;
636 err = esr_write_glue0(np, i, glue0);
637 if (err)
638 return err;
639 }
640
641 err = esr_reset(np);
642 if (err)
643 return err;
644
645 sig = nr64(ESR_INT_SIGNALS);
646 switch (np->port) {
647 case 0:
648 mask = ESR_INT_SIGNALS_P0_BITS;
649 val = (ESR_INT_SRDY0_P0 |
650 ESR_INT_DET0_P0 |
651 ESR_INT_XSRDY_P0 |
652 ESR_INT_XDP_P0_CH3 |
653 ESR_INT_XDP_P0_CH2 |
654 ESR_INT_XDP_P0_CH1 |
655 ESR_INT_XDP_P0_CH0);
656 break;
657
658 case 1:
659 mask = ESR_INT_SIGNALS_P1_BITS;
660 val = (ESR_INT_SRDY0_P1 |
661 ESR_INT_DET0_P1 |
662 ESR_INT_XSRDY_P1 |
663 ESR_INT_XDP_P1_CH3 |
664 ESR_INT_XDP_P1_CH2 |
665 ESR_INT_XDP_P1_CH1 |
666 ESR_INT_XDP_P1_CH0);
667 break;
668
669 default:
670 return -EINVAL;
671 }
672
673 if ((sig & mask) != val) {
674 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
675 "[%08x]\n", np->port, (int) (sig & mask), (int) val);
676 return -ENODEV;
677 }
678
679 return 0;
680 }
681
682 static int serdes_init_1g(struct niu *np)
683 {
684 u64 val;
685
686 val = nr64(ENET_SERDES_1_PLL_CFG);
687 val &= ~ENET_SERDES_PLL_FBDIV2;
688 switch (np->port) {
689 case 0:
690 val |= ENET_SERDES_PLL_HRATE0;
691 break;
692 case 1:
693 val |= ENET_SERDES_PLL_HRATE1;
694 break;
695 case 2:
696 val |= ENET_SERDES_PLL_HRATE2;
697 break;
698 case 3:
699 val |= ENET_SERDES_PLL_HRATE3;
700 break;
701 default:
702 return -EINVAL;
703 }
704 nw64(ENET_SERDES_1_PLL_CFG, val);
705
706 return 0;
707 }
708
709 static int bcm8704_reset(struct niu *np)
710 {
711 int err, limit;
712
713 err = mdio_read(np, np->phy_addr,
714 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
715 if (err < 0)
716 return err;
717 err |= BMCR_RESET;
718 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
719 MII_BMCR, err);
720 if (err)
721 return err;
722
723 limit = 1000;
724 while (--limit >= 0) {
725 err = mdio_read(np, np->phy_addr,
726 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
727 if (err < 0)
728 return err;
729 if (!(err & BMCR_RESET))
730 break;
731 }
732 if (limit < 0) {
733 dev_err(np->device, PFX "Port %u PHY will not reset "
734 "(bmcr=%04x)\n", np->port, (err & 0xffff));
735 return -ENODEV;
736 }
737 return 0;
738 }
739
740 /* When written, certain PHY registers need to be read back twice
741 * in order for the bits to settle properly.
742 */
743 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
744 {
745 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
746 if (err < 0)
747 return err;
748 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
749 if (err < 0)
750 return err;
751 return 0;
752 }
753
754 static int bcm8704_init_user_dev3(struct niu *np)
755 {
756 int err;
757
758 err = mdio_write(np, np->phy_addr,
759 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
760 (USER_CONTROL_OPTXRST_LVL |
761 USER_CONTROL_OPBIASFLT_LVL |
762 USER_CONTROL_OBTMPFLT_LVL |
763 USER_CONTROL_OPPRFLT_LVL |
764 USER_CONTROL_OPTXFLT_LVL |
765 USER_CONTROL_OPRXLOS_LVL |
766 USER_CONTROL_OPRXFLT_LVL |
767 USER_CONTROL_OPTXON_LVL |
768 (0x3f << USER_CONTROL_RES1_SHIFT)));
769 if (err)
770 return err;
771
772 err = mdio_write(np, np->phy_addr,
773 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
774 (USER_PMD_TX_CTL_XFP_CLKEN |
775 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
776 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
777 USER_PMD_TX_CTL_TSCK_LPWREN));
778 if (err)
779 return err;
780
781 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
782 if (err)
783 return err;
784 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
785 if (err)
786 return err;
787
788 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
789 BCM8704_USER_OPT_DIGITAL_CTRL);
790 if (err < 0)
791 return err;
792 err &= ~USER_ODIG_CTRL_GPIOS;
793 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
794 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
795 BCM8704_USER_OPT_DIGITAL_CTRL, err);
796 if (err)
797 return err;
798
799 mdelay(1000);
800
801 return 0;
802 }
803
804 static int xcvr_init_10g(struct niu *np)
805 {
806 struct niu_link_config *lp = &np->link_config;
807 u16 analog_stat0, tx_alarm_status;
808 int err;
809 u64 val;
810
811 val = nr64_mac(XMAC_CONFIG);
812 val &= ~XMAC_CONFIG_LED_POLARITY;
813 val |= XMAC_CONFIG_FORCE_LED_ON;
814 nw64_mac(XMAC_CONFIG, val);
815
816 /* XXX shared resource, lock parent XXX */
817 val = nr64(MIF_CONFIG);
818 val |= MIF_CONFIG_INDIRECT_MODE;
819 nw64(MIF_CONFIG, val);
820
821 err = bcm8704_reset(np);
822 if (err)
823 return err;
824
825 err = bcm8704_init_user_dev3(np);
826 if (err)
827 return err;
828
829 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
830 MII_BMCR);
831 if (err < 0)
832 return err;
833 err &= ~BMCR_LOOPBACK;
834
835 if (lp->loopback_mode == LOOPBACK_MAC)
836 err |= BMCR_LOOPBACK;
837
838 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
839 MII_BMCR, err);
840 if (err)
841 return err;
842
843 #if 1
844 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
845 MII_STAT1000);
846 if (err < 0)
847 return err;
848 pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
849 np->port, err);
850
851 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
852 if (err < 0)
853 return err;
854 pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
855 np->port, err);
856
857 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
858 MII_NWAYTEST);
859 if (err < 0)
860 return err;
861 pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
862 np->port, err);
863 #endif
864
865 /* XXX dig this out it might not be so useful XXX */
866 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
867 BCM8704_USER_ANALOG_STATUS0);
868 if (err < 0)
869 return err;
870 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
871 BCM8704_USER_ANALOG_STATUS0);
872 if (err < 0)
873 return err;
874 analog_stat0 = err;
875
876 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
877 BCM8704_USER_TX_ALARM_STATUS);
878 if (err < 0)
879 return err;
880 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
881 BCM8704_USER_TX_ALARM_STATUS);
882 if (err < 0)
883 return err;
884 tx_alarm_status = err;
885
886 if (analog_stat0 != 0x03fc) {
887 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
888 pr_info(PFX "Port %u cable not connected "
889 "or bad cable.\n", np->port);
890 } else if (analog_stat0 == 0x639c) {
891 pr_info(PFX "Port %u optical module is bad "
892 "or missing.\n", np->port);
893 }
894 }
895
896 return 0;
897 }
898
899 static int mii_reset(struct niu *np)
900 {
901 int limit, err;
902
903 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
904 if (err)
905 return err;
906
907 limit = 1000;
908 while (--limit >= 0) {
909 udelay(500);
910 err = mii_read(np, np->phy_addr, MII_BMCR);
911 if (err < 0)
912 return err;
913 if (!(err & BMCR_RESET))
914 break;
915 }
916 if (limit < 0) {
917 dev_err(np->device, PFX "Port %u MII would not reset, "
918 "bmcr[%04x]\n", np->port, err);
919 return -ENODEV;
920 }
921
922 return 0;
923 }
924
925 static int mii_init_common(struct niu *np)
926 {
927 struct niu_link_config *lp = &np->link_config;
928 u16 bmcr, bmsr, adv, estat;
929 int err;
930
931 err = mii_reset(np);
932 if (err)
933 return err;
934
935 err = mii_read(np, np->phy_addr, MII_BMSR);
936 if (err < 0)
937 return err;
938 bmsr = err;
939
940 estat = 0;
941 if (bmsr & BMSR_ESTATEN) {
942 err = mii_read(np, np->phy_addr, MII_ESTATUS);
943 if (err < 0)
944 return err;
945 estat = err;
946 }
947
948 bmcr = 0;
949 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
950 if (err)
951 return err;
952
953 if (lp->loopback_mode == LOOPBACK_MAC) {
954 bmcr |= BMCR_LOOPBACK;
955 if (lp->active_speed == SPEED_1000)
956 bmcr |= BMCR_SPEED1000;
957 if (lp->active_duplex == DUPLEX_FULL)
958 bmcr |= BMCR_FULLDPLX;
959 }
960
961 if (lp->loopback_mode == LOOPBACK_PHY) {
962 u16 aux;
963
964 aux = (BCM5464R_AUX_CTL_EXT_LB |
965 BCM5464R_AUX_CTL_WRITE_1);
966 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
967 if (err)
968 return err;
969 }
970
971 /* XXX configurable XXX */
972 /* XXX for now don't advertise half-duplex or asym pause... XXX */
973 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
974 if (bmsr & BMSR_10FULL)
975 adv |= ADVERTISE_10FULL;
976 if (bmsr & BMSR_100FULL)
977 adv |= ADVERTISE_100FULL;
978 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
979 if (err)
980 return err;
981
982 if (bmsr & BMSR_ESTATEN) {
983 u16 ctrl1000 = 0;
984
985 if (estat & ESTATUS_1000_TFULL)
986 ctrl1000 |= ADVERTISE_1000FULL;
987 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
988 if (err)
989 return err;
990 }
991 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
992
993 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
994 if (err)
995 return err;
996
997 err = mii_read(np, np->phy_addr, MII_BMCR);
998 if (err < 0)
999 return err;
1000 err = mii_read(np, np->phy_addr, MII_BMSR);
1001 if (err < 0)
1002 return err;
1003 #if 0
1004 pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1005 np->port, bmcr, bmsr);
1006 #endif
1007
1008 return 0;
1009 }
1010
1011 static int xcvr_init_1g(struct niu *np)
1012 {
1013 u64 val;
1014
1015 /* XXX shared resource, lock parent XXX */
1016 val = nr64(MIF_CONFIG);
1017 val &= ~MIF_CONFIG_INDIRECT_MODE;
1018 nw64(MIF_CONFIG, val);
1019
1020 return mii_init_common(np);
1021 }
1022
1023 static int niu_xcvr_init(struct niu *np)
1024 {
1025 const struct niu_phy_ops *ops = np->phy_ops;
1026 int err;
1027
1028 err = 0;
1029 if (ops->xcvr_init)
1030 err = ops->xcvr_init(np);
1031
1032 return err;
1033 }
1034
1035 static int niu_serdes_init(struct niu *np)
1036 {
1037 const struct niu_phy_ops *ops = np->phy_ops;
1038 int err;
1039
1040 err = 0;
1041 if (ops->serdes_init)
1042 err = ops->serdes_init(np);
1043
1044 return err;
1045 }
1046
1047 static void niu_init_xif(struct niu *);
1048
1049 static int niu_link_status_common(struct niu *np, int link_up)
1050 {
1051 struct niu_link_config *lp = &np->link_config;
1052 struct net_device *dev = np->dev;
1053 unsigned long flags;
1054
1055 if (!netif_carrier_ok(dev) && link_up) {
1056 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1057 dev->name,
1058 (lp->active_speed == SPEED_10000 ?
1059 "10Gb/sec" :
1060 (lp->active_speed == SPEED_1000 ?
1061 "1Gb/sec" :
1062 (lp->active_speed == SPEED_100 ?
1063 "100Mbit/sec" : "10Mbit/sec"))),
1064 (lp->active_duplex == DUPLEX_FULL ?
1065 "full" : "half"));
1066
1067 spin_lock_irqsave(&np->lock, flags);
1068 niu_init_xif(np);
1069 spin_unlock_irqrestore(&np->lock, flags);
1070
1071 netif_carrier_on(dev);
1072 } else if (netif_carrier_ok(dev) && !link_up) {
1073 niuwarn(LINK, "%s: Link is down\n", dev->name);
1074 netif_carrier_off(dev);
1075 }
1076
1077 return 0;
1078 }
1079
1080 static int link_status_10g(struct niu *np, int *link_up_p)
1081 {
1082 unsigned long flags;
1083 int err, link_up;
1084
1085 link_up = 0;
1086
1087 spin_lock_irqsave(&np->lock, flags);
1088
1089 err = -EINVAL;
1090 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1091 goto out;
1092
1093 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1094 BCM8704_PMD_RCV_SIGDET);
1095 if (err < 0)
1096 goto out;
1097 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1098 err = 0;
1099 goto out;
1100 }
1101
1102 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1103 BCM8704_PCS_10G_R_STATUS);
1104 if (err < 0)
1105 goto out;
1106 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1107 err = 0;
1108 goto out;
1109 }
1110
1111 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1112 BCM8704_PHYXS_XGXS_LANE_STAT);
1113 if (err < 0)
1114 goto out;
1115
1116 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1117 PHYXS_XGXS_LANE_STAT_MAGIC |
1118 PHYXS_XGXS_LANE_STAT_LANE3 |
1119 PHYXS_XGXS_LANE_STAT_LANE2 |
1120 PHYXS_XGXS_LANE_STAT_LANE1 |
1121 PHYXS_XGXS_LANE_STAT_LANE0)) {
1122 err = 0;
1123 goto out;
1124 }
1125
1126 link_up = 1;
1127 np->link_config.active_speed = SPEED_10000;
1128 np->link_config.active_duplex = DUPLEX_FULL;
1129 err = 0;
1130
1131 out:
1132 spin_unlock_irqrestore(&np->lock, flags);
1133
1134 *link_up_p = link_up;
1135 return err;
1136 }
1137
1138 static int link_status_1g(struct niu *np, int *link_up_p)
1139 {
1140 u16 current_speed, bmsr;
1141 unsigned long flags;
1142 u8 current_duplex;
1143 int err, link_up;
1144
1145 link_up = 0;
1146 current_speed = SPEED_INVALID;
1147 current_duplex = DUPLEX_INVALID;
1148
1149 spin_lock_irqsave(&np->lock, flags);
1150
1151 err = -EINVAL;
1152 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
1153 goto out;
1154
1155 err = mii_read(np, np->phy_addr, MII_BMSR);
1156 if (err < 0)
1157 goto out;
1158
1159 bmsr = err;
1160 if (bmsr & BMSR_LSTATUS) {
1161 u16 adv, lpa, common, estat;
1162
1163 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1164 if (err < 0)
1165 goto out;
1166 adv = err;
1167
1168 err = mii_read(np, np->phy_addr, MII_LPA);
1169 if (err < 0)
1170 goto out;
1171 lpa = err;
1172
1173 common = adv & lpa;
1174
1175 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1176 if (err < 0)
1177 goto out;
1178 estat = err;
1179
1180 link_up = 1;
1181 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
1182 current_speed = SPEED_1000;
1183 if (estat & ESTATUS_1000_TFULL)
1184 current_duplex = DUPLEX_FULL;
1185 else
1186 current_duplex = DUPLEX_HALF;
1187 } else {
1188 if (common & ADVERTISE_100BASE4) {
1189 current_speed = SPEED_100;
1190 current_duplex = DUPLEX_HALF;
1191 } else if (common & ADVERTISE_100FULL) {
1192 current_speed = SPEED_100;
1193 current_duplex = DUPLEX_FULL;
1194 } else if (common & ADVERTISE_100HALF) {
1195 current_speed = SPEED_100;
1196 current_duplex = DUPLEX_HALF;
1197 } else if (common & ADVERTISE_10FULL) {
1198 current_speed = SPEED_10;
1199 current_duplex = DUPLEX_FULL;
1200 } else if (common & ADVERTISE_10HALF) {
1201 current_speed = SPEED_10;
1202 current_duplex = DUPLEX_HALF;
1203 } else
1204 link_up = 0;
1205 }
1206 }
1207 err = 0;
1208
1209 out:
1210 spin_unlock_irqrestore(&np->lock, flags);
1211
1212 *link_up_p = link_up;
1213 return err;
1214 }
1215
1216 static int niu_link_status(struct niu *np, int *link_up_p)
1217 {
1218 const struct niu_phy_ops *ops = np->phy_ops;
1219 int err;
1220
1221 err = 0;
1222 if (ops->link_status)
1223 err = ops->link_status(np, link_up_p);
1224
1225 return err;
1226 }
1227
1228 static void niu_timer(unsigned long __opaque)
1229 {
1230 struct niu *np = (struct niu *) __opaque;
1231 unsigned long off;
1232 int err, link_up;
1233
1234 err = niu_link_status(np, &link_up);
1235 if (!err)
1236 niu_link_status_common(np, link_up);
1237
1238 if (netif_carrier_ok(np->dev))
1239 off = 5 * HZ;
1240 else
1241 off = 1 * HZ;
1242 np->timer.expires = jiffies + off;
1243
1244 add_timer(&np->timer);
1245 }
1246
1247 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
1248 .serdes_init = serdes_init_niu,
1249 .xcvr_init = xcvr_init_10g,
1250 .link_status = link_status_10g,
1251 };
1252
1253 static const struct niu_phy_ops phy_ops_10g_fiber = {
1254 .serdes_init = serdes_init_10g,
1255 .xcvr_init = xcvr_init_10g,
1256 .link_status = link_status_10g,
1257 };
1258
1259 static const struct niu_phy_ops phy_ops_10g_copper = {
1260 .serdes_init = serdes_init_10g,
1261 .link_status = link_status_10g, /* XXX */
1262 };
1263
1264 static const struct niu_phy_ops phy_ops_1g_fiber = {
1265 .serdes_init = serdes_init_1g,
1266 .xcvr_init = xcvr_init_1g,
1267 .link_status = link_status_1g,
1268 };
1269
1270 static const struct niu_phy_ops phy_ops_1g_copper = {
1271 .xcvr_init = xcvr_init_1g,
1272 .link_status = link_status_1g,
1273 };
1274
1275 struct niu_phy_template {
1276 const struct niu_phy_ops *ops;
1277 u32 phy_addr_base;
1278 };
1279
1280 static const struct niu_phy_template phy_template_niu = {
1281 .ops = &phy_ops_10g_fiber_niu,
1282 .phy_addr_base = 16,
1283 };
1284
1285 static const struct niu_phy_template phy_template_10g_fiber = {
1286 .ops = &phy_ops_10g_fiber,
1287 .phy_addr_base = 8,
1288 };
1289
1290 static const struct niu_phy_template phy_template_10g_copper = {
1291 .ops = &phy_ops_10g_copper,
1292 .phy_addr_base = 10,
1293 };
1294
1295 static const struct niu_phy_template phy_template_1g_fiber = {
1296 .ops = &phy_ops_1g_fiber,
1297 .phy_addr_base = 0,
1298 };
1299
1300 static const struct niu_phy_template phy_template_1g_copper = {
1301 .ops = &phy_ops_1g_copper,
1302 .phy_addr_base = 0,
1303 };
1304
1305 static int niu_determine_phy_disposition(struct niu *np)
1306 {
1307 struct niu_parent *parent = np->parent;
1308 u8 plat_type = parent->plat_type;
1309 const struct niu_phy_template *tp;
1310 u32 phy_addr_off = 0;
1311
1312 if (plat_type == PLAT_TYPE_NIU) {
1313 tp = &phy_template_niu;
1314 phy_addr_off += np->port;
1315 } else {
1316 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
1317 case 0:
1318 /* 1G copper */
1319 tp = &phy_template_1g_copper;
1320 if (plat_type == PLAT_TYPE_VF_P0)
1321 phy_addr_off = 10;
1322 else if (plat_type == PLAT_TYPE_VF_P1)
1323 phy_addr_off = 26;
1324
1325 phy_addr_off += (np->port ^ 0x3);
1326 break;
1327
1328 case NIU_FLAGS_10G:
1329 /* 10G copper */
1330 tp = &phy_template_1g_copper;
1331 break;
1332
1333 case NIU_FLAGS_FIBER:
1334 /* 1G fiber */
1335 tp = &phy_template_1g_fiber;
1336 break;
1337
1338 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
1339 /* 10G fiber */
1340 tp = &phy_template_10g_fiber;
1341 if (plat_type == PLAT_TYPE_VF_P0 ||
1342 plat_type == PLAT_TYPE_VF_P1)
1343 phy_addr_off = 8;
1344 phy_addr_off += np->port;
1345 break;
1346
1347 default:
1348 return -EINVAL;
1349 }
1350 }
1351
1352 np->phy_ops = tp->ops;
1353 np->phy_addr = tp->phy_addr_base + phy_addr_off;
1354
1355 return 0;
1356 }
1357
1358 static int niu_init_link(struct niu *np)
1359 {
1360 struct niu_parent *parent = np->parent;
1361 int err, ignore;
1362
1363 if (parent->plat_type == PLAT_TYPE_NIU) {
1364 err = niu_xcvr_init(np);
1365 if (err)
1366 return err;
1367 msleep(200);
1368 }
1369 err = niu_serdes_init(np);
1370 if (err)
1371 return err;
1372 msleep(200);
1373 err = niu_xcvr_init(np);
1374 if (!err)
1375 niu_link_status(np, &ignore);
1376 return 0;
1377 }
1378
1379 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
1380 {
1381 u16 reg0 = addr[4] << 8 | addr[5];
1382 u16 reg1 = addr[2] << 8 | addr[3];
1383 u16 reg2 = addr[0] << 8 | addr[1];
1384
1385 if (np->flags & NIU_FLAGS_XMAC) {
1386 nw64_mac(XMAC_ADDR0, reg0);
1387 nw64_mac(XMAC_ADDR1, reg1);
1388 nw64_mac(XMAC_ADDR2, reg2);
1389 } else {
1390 nw64_mac(BMAC_ADDR0, reg0);
1391 nw64_mac(BMAC_ADDR1, reg1);
1392 nw64_mac(BMAC_ADDR2, reg2);
1393 }
1394 }
1395
1396 static int niu_num_alt_addr(struct niu *np)
1397 {
1398 if (np->flags & NIU_FLAGS_XMAC)
1399 return XMAC_NUM_ALT_ADDR;
1400 else
1401 return BMAC_NUM_ALT_ADDR;
1402 }
1403
1404 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
1405 {
1406 u16 reg0 = addr[4] << 8 | addr[5];
1407 u16 reg1 = addr[2] << 8 | addr[3];
1408 u16 reg2 = addr[0] << 8 | addr[1];
1409
1410 if (index >= niu_num_alt_addr(np))
1411 return -EINVAL;
1412
1413 if (np->flags & NIU_FLAGS_XMAC) {
1414 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
1415 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
1416 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
1417 } else {
1418 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
1419 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
1420 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
1421 }
1422
1423 return 0;
1424 }
1425
1426 static int niu_enable_alt_mac(struct niu *np, int index, int on)
1427 {
1428 unsigned long reg;
1429 u64 val, mask;
1430
1431 if (index >= niu_num_alt_addr(np))
1432 return -EINVAL;
1433
1434 if (np->flags & NIU_FLAGS_XMAC)
1435 reg = XMAC_ADDR_CMPEN;
1436 else
1437 reg = BMAC_ADDR_CMPEN;
1438
1439 mask = 1 << index;
1440
1441 val = nr64_mac(reg);
1442 if (on)
1443 val |= mask;
1444 else
1445 val &= ~mask;
1446 nw64_mac(reg, val);
1447
1448 return 0;
1449 }
1450
1451 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
1452 int num, int mac_pref)
1453 {
1454 u64 val = nr64_mac(reg);
1455 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
1456 val |= num;
1457 if (mac_pref)
1458 val |= HOST_INFO_MPR;
1459 nw64_mac(reg, val);
1460 }
1461
1462 static int __set_rdc_table_num(struct niu *np,
1463 int xmac_index, int bmac_index,
1464 int rdc_table_num, int mac_pref)
1465 {
1466 unsigned long reg;
1467
1468 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
1469 return -EINVAL;
1470 if (np->flags & NIU_FLAGS_XMAC)
1471 reg = XMAC_HOST_INFO(xmac_index);
1472 else
1473 reg = BMAC_HOST_INFO(bmac_index);
1474 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
1475 return 0;
1476 }
1477
1478 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
1479 int mac_pref)
1480 {
1481 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
1482 }
1483
1484 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
1485 int mac_pref)
1486 {
1487 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
1488 }
1489
1490 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
1491 int table_num, int mac_pref)
1492 {
1493 if (idx >= niu_num_alt_addr(np))
1494 return -EINVAL;
1495 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
1496 }
1497
1498 static u64 vlan_entry_set_parity(u64 reg_val)
1499 {
1500 u64 port01_mask;
1501 u64 port23_mask;
1502
1503 port01_mask = 0x00ff;
1504 port23_mask = 0xff00;
1505
1506 if (hweight64(reg_val & port01_mask) & 1)
1507 reg_val |= ENET_VLAN_TBL_PARITY0;
1508 else
1509 reg_val &= ~ENET_VLAN_TBL_PARITY0;
1510
1511 if (hweight64(reg_val & port23_mask) & 1)
1512 reg_val |= ENET_VLAN_TBL_PARITY1;
1513 else
1514 reg_val &= ~ENET_VLAN_TBL_PARITY1;
1515
1516 return reg_val;
1517 }
1518
1519 static void vlan_tbl_write(struct niu *np, unsigned long index,
1520 int port, int vpr, int rdc_table)
1521 {
1522 u64 reg_val = nr64(ENET_VLAN_TBL(index));
1523
1524 reg_val &= ~((ENET_VLAN_TBL_VPR |
1525 ENET_VLAN_TBL_VLANRDCTBLN) <<
1526 ENET_VLAN_TBL_SHIFT(port));
1527 if (vpr)
1528 reg_val |= (ENET_VLAN_TBL_VPR <<
1529 ENET_VLAN_TBL_SHIFT(port));
1530 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
1531
1532 reg_val = vlan_entry_set_parity(reg_val);
1533
1534 nw64(ENET_VLAN_TBL(index), reg_val);
1535 }
1536
1537 static void vlan_tbl_clear(struct niu *np)
1538 {
1539 int i;
1540
1541 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
1542 nw64(ENET_VLAN_TBL(i), 0);
1543 }
1544
1545 static int tcam_wait_bit(struct niu *np, u64 bit)
1546 {
1547 int limit = 1000;
1548
1549 while (--limit > 0) {
1550 if (nr64(TCAM_CTL) & bit)
1551 break;
1552 udelay(1);
1553 }
1554 if (limit < 0)
1555 return -ENODEV;
1556
1557 return 0;
1558 }
1559
1560 static int tcam_flush(struct niu *np, int index)
1561 {
1562 nw64(TCAM_KEY_0, 0x00);
1563 nw64(TCAM_KEY_MASK_0, 0xff);
1564 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1565
1566 return tcam_wait_bit(np, TCAM_CTL_STAT);
1567 }
1568
1569 #if 0
1570 static int tcam_read(struct niu *np, int index,
1571 u64 *key, u64 *mask)
1572 {
1573 int err;
1574
1575 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
1576 err = tcam_wait_bit(np, TCAM_CTL_STAT);
1577 if (!err) {
1578 key[0] = nr64(TCAM_KEY_0);
1579 key[1] = nr64(TCAM_KEY_1);
1580 key[2] = nr64(TCAM_KEY_2);
1581 key[3] = nr64(TCAM_KEY_3);
1582 mask[0] = nr64(TCAM_KEY_MASK_0);
1583 mask[1] = nr64(TCAM_KEY_MASK_1);
1584 mask[2] = nr64(TCAM_KEY_MASK_2);
1585 mask[3] = nr64(TCAM_KEY_MASK_3);
1586 }
1587 return err;
1588 }
1589 #endif
1590
1591 static int tcam_write(struct niu *np, int index,
1592 u64 *key, u64 *mask)
1593 {
1594 nw64(TCAM_KEY_0, key[0]);
1595 nw64(TCAM_KEY_1, key[1]);
1596 nw64(TCAM_KEY_2, key[2]);
1597 nw64(TCAM_KEY_3, key[3]);
1598 nw64(TCAM_KEY_MASK_0, mask[0]);
1599 nw64(TCAM_KEY_MASK_1, mask[1]);
1600 nw64(TCAM_KEY_MASK_2, mask[2]);
1601 nw64(TCAM_KEY_MASK_3, mask[3]);
1602 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
1603
1604 return tcam_wait_bit(np, TCAM_CTL_STAT);
1605 }
1606
1607 #if 0
1608 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
1609 {
1610 int err;
1611
1612 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
1613 err = tcam_wait_bit(np, TCAM_CTL_STAT);
1614 if (!err)
1615 *data = nr64(TCAM_KEY_1);
1616
1617 return err;
1618 }
1619 #endif
1620
1621 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
1622 {
1623 nw64(TCAM_KEY_1, assoc_data);
1624 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
1625
1626 return tcam_wait_bit(np, TCAM_CTL_STAT);
1627 }
1628
1629 static void tcam_enable(struct niu *np, int on)
1630 {
1631 u64 val = nr64(FFLP_CFG_1);
1632
1633 if (on)
1634 val &= ~FFLP_CFG_1_TCAM_DIS;
1635 else
1636 val |= FFLP_CFG_1_TCAM_DIS;
1637 nw64(FFLP_CFG_1, val);
1638 }
1639
1640 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
1641 {
1642 u64 val = nr64(FFLP_CFG_1);
1643
1644 val &= ~(FFLP_CFG_1_FFLPINITDONE |
1645 FFLP_CFG_1_CAMLAT |
1646 FFLP_CFG_1_CAMRATIO);
1647 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
1648 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
1649 nw64(FFLP_CFG_1, val);
1650
1651 val = nr64(FFLP_CFG_1);
1652 val |= FFLP_CFG_1_FFLPINITDONE;
1653 nw64(FFLP_CFG_1, val);
1654 }
1655
1656 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
1657 int on)
1658 {
1659 unsigned long reg;
1660 u64 val;
1661
1662 if (class < CLASS_CODE_ETHERTYPE1 ||
1663 class > CLASS_CODE_ETHERTYPE2)
1664 return -EINVAL;
1665
1666 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1667 val = nr64(reg);
1668 if (on)
1669 val |= L2_CLS_VLD;
1670 else
1671 val &= ~L2_CLS_VLD;
1672 nw64(reg, val);
1673
1674 return 0;
1675 }
1676
1677 #if 0
1678 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
1679 u64 ether_type)
1680 {
1681 unsigned long reg;
1682 u64 val;
1683
1684 if (class < CLASS_CODE_ETHERTYPE1 ||
1685 class > CLASS_CODE_ETHERTYPE2 ||
1686 (ether_type & ~(u64)0xffff) != 0)
1687 return -EINVAL;
1688
1689 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
1690 val = nr64(reg);
1691 val &= ~L2_CLS_ETYPE;
1692 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
1693 nw64(reg, val);
1694
1695 return 0;
1696 }
1697 #endif
1698
1699 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
1700 int on)
1701 {
1702 unsigned long reg;
1703 u64 val;
1704
1705 if (class < CLASS_CODE_USER_PROG1 ||
1706 class > CLASS_CODE_USER_PROG4)
1707 return -EINVAL;
1708
1709 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1710 val = nr64(reg);
1711 if (on)
1712 val |= L3_CLS_VALID;
1713 else
1714 val &= ~L3_CLS_VALID;
1715 nw64(reg, val);
1716
1717 return 0;
1718 }
1719
1720 #if 0
1721 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
1722 int ipv6, u64 protocol_id,
1723 u64 tos_mask, u64 tos_val)
1724 {
1725 unsigned long reg;
1726 u64 val;
1727
1728 if (class < CLASS_CODE_USER_PROG1 ||
1729 class > CLASS_CODE_USER_PROG4 ||
1730 (protocol_id & ~(u64)0xff) != 0 ||
1731 (tos_mask & ~(u64)0xff) != 0 ||
1732 (tos_val & ~(u64)0xff) != 0)
1733 return -EINVAL;
1734
1735 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
1736 val = nr64(reg);
1737 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
1738 L3_CLS_TOSMASK | L3_CLS_TOS);
1739 if (ipv6)
1740 val |= L3_CLS_IPVER;
1741 val |= (protocol_id << L3_CLS_PID_SHIFT);
1742 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
1743 val |= (tos_val << L3_CLS_TOS_SHIFT);
1744 nw64(reg, val);
1745
1746 return 0;
1747 }
1748 #endif
1749
1750 static int tcam_early_init(struct niu *np)
1751 {
1752 unsigned long i;
1753 int err;
1754
1755 tcam_enable(np, 0);
1756 tcam_set_lat_and_ratio(np,
1757 DEFAULT_TCAM_LATENCY,
1758 DEFAULT_TCAM_ACCESS_RATIO);
1759 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
1760 err = tcam_user_eth_class_enable(np, i, 0);
1761 if (err)
1762 return err;
1763 }
1764 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
1765 err = tcam_user_ip_class_enable(np, i, 0);
1766 if (err)
1767 return err;
1768 }
1769
1770 return 0;
1771 }
1772
1773 static int tcam_flush_all(struct niu *np)
1774 {
1775 unsigned long i;
1776
1777 for (i = 0; i < np->parent->tcam_num_entries; i++) {
1778 int err = tcam_flush(np, i);
1779 if (err)
1780 return err;
1781 }
1782 return 0;
1783 }
1784
1785 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
1786 {
1787 return ((u64)index | (num_entries == 1 ?
1788 HASH_TBL_ADDR_AUTOINC : 0));
1789 }
1790
1791 #if 0
1792 static int hash_read(struct niu *np, unsigned long partition,
1793 unsigned long index, unsigned long num_entries,
1794 u64 *data)
1795 {
1796 u64 val = hash_addr_regval(index, num_entries);
1797 unsigned long i;
1798
1799 if (partition >= FCRAM_NUM_PARTITIONS ||
1800 index + num_entries > FCRAM_SIZE)
1801 return -EINVAL;
1802
1803 nw64(HASH_TBL_ADDR(partition), val);
1804 for (i = 0; i < num_entries; i++)
1805 data[i] = nr64(HASH_TBL_DATA(partition));
1806
1807 return 0;
1808 }
1809 #endif
1810
1811 static int hash_write(struct niu *np, unsigned long partition,
1812 unsigned long index, unsigned long num_entries,
1813 u64 *data)
1814 {
1815 u64 val = hash_addr_regval(index, num_entries);
1816 unsigned long i;
1817
1818 if (partition >= FCRAM_NUM_PARTITIONS ||
1819 index + (num_entries * 8) > FCRAM_SIZE)
1820 return -EINVAL;
1821
1822 nw64(HASH_TBL_ADDR(partition), val);
1823 for (i = 0; i < num_entries; i++)
1824 nw64(HASH_TBL_DATA(partition), data[i]);
1825
1826 return 0;
1827 }
1828
1829 static void fflp_reset(struct niu *np)
1830 {
1831 u64 val;
1832
1833 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
1834 udelay(10);
1835 nw64(FFLP_CFG_1, 0);
1836
1837 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
1838 nw64(FFLP_CFG_1, val);
1839 }
1840
1841 static void fflp_set_timings(struct niu *np)
1842 {
1843 u64 val = nr64(FFLP_CFG_1);
1844
1845 val &= ~FFLP_CFG_1_FFLPINITDONE;
1846 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
1847 nw64(FFLP_CFG_1, val);
1848
1849 val = nr64(FFLP_CFG_1);
1850 val |= FFLP_CFG_1_FFLPINITDONE;
1851 nw64(FFLP_CFG_1, val);
1852
1853 val = nr64(FCRAM_REF_TMR);
1854 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
1855 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
1856 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
1857 nw64(FCRAM_REF_TMR, val);
1858 }
1859
1860 static int fflp_set_partition(struct niu *np, u64 partition,
1861 u64 mask, u64 base, int enable)
1862 {
1863 unsigned long reg;
1864 u64 val;
1865
1866 if (partition >= FCRAM_NUM_PARTITIONS ||
1867 (mask & ~(u64)0x1f) != 0 ||
1868 (base & ~(u64)0x1f) != 0)
1869 return -EINVAL;
1870
1871 reg = FLW_PRT_SEL(partition);
1872
1873 val = nr64(reg);
1874 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
1875 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
1876 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
1877 if (enable)
1878 val |= FLW_PRT_SEL_EXT;
1879 nw64(reg, val);
1880
1881 return 0;
1882 }
1883
1884 static int fflp_disable_all_partitions(struct niu *np)
1885 {
1886 unsigned long i;
1887
1888 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
1889 int err = fflp_set_partition(np, 0, 0, 0, 0);
1890 if (err)
1891 return err;
1892 }
1893 return 0;
1894 }
1895
1896 static void fflp_llcsnap_enable(struct niu *np, int on)
1897 {
1898 u64 val = nr64(FFLP_CFG_1);
1899
1900 if (on)
1901 val |= FFLP_CFG_1_LLCSNAP;
1902 else
1903 val &= ~FFLP_CFG_1_LLCSNAP;
1904 nw64(FFLP_CFG_1, val);
1905 }
1906
1907 static void fflp_errors_enable(struct niu *np, int on)
1908 {
1909 u64 val = nr64(FFLP_CFG_1);
1910
1911 if (on)
1912 val &= ~FFLP_CFG_1_ERRORDIS;
1913 else
1914 val |= FFLP_CFG_1_ERRORDIS;
1915 nw64(FFLP_CFG_1, val);
1916 }
1917
1918 static int fflp_hash_clear(struct niu *np)
1919 {
1920 struct fcram_hash_ipv4 ent;
1921 unsigned long i;
1922
1923 /* IPV4 hash entry with valid bit clear, rest is don't care. */
1924 memset(&ent, 0, sizeof(ent));
1925 ent.header = HASH_HEADER_EXT;
1926
1927 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
1928 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
1929 if (err)
1930 return err;
1931 }
1932 return 0;
1933 }
1934
1935 static int fflp_early_init(struct niu *np)
1936 {
1937 struct niu_parent *parent;
1938 unsigned long flags;
1939 int err;
1940
1941 niu_lock_parent(np, flags);
1942
1943 parent = np->parent;
1944 err = 0;
1945 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
1946 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
1947 np->port);
1948 if (np->parent->plat_type != PLAT_TYPE_NIU) {
1949 fflp_reset(np);
1950 fflp_set_timings(np);
1951 err = fflp_disable_all_partitions(np);
1952 if (err) {
1953 niudbg(PROBE, "fflp_disable_all_partitions "
1954 "failed, err=%d\n", err);
1955 goto out;
1956 }
1957 }
1958
1959 err = tcam_early_init(np);
1960 if (err) {
1961 niudbg(PROBE, "tcam_early_init failed, err=%d\n",
1962 err);
1963 goto out;
1964 }
1965 fflp_llcsnap_enable(np, 1);
1966 fflp_errors_enable(np, 0);
1967 nw64(H1POLY, 0);
1968 nw64(H2POLY, 0);
1969
1970 err = tcam_flush_all(np);
1971 if (err) {
1972 niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
1973 err);
1974 goto out;
1975 }
1976 if (np->parent->plat_type != PLAT_TYPE_NIU) {
1977 err = fflp_hash_clear(np);
1978 if (err) {
1979 niudbg(PROBE, "fflp_hash_clear failed, "
1980 "err=%d\n", err);
1981 goto out;
1982 }
1983 }
1984
1985 vlan_tbl_clear(np);
1986
1987 niudbg(PROBE, "fflp_early_init: Success\n");
1988 parent->flags |= PARENT_FLGS_CLS_HWINIT;
1989 }
1990 out:
1991 niu_unlock_parent(np, flags);
1992 return err;
1993 }
1994
1995 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
1996 {
1997 if (class_code < CLASS_CODE_USER_PROG1 ||
1998 class_code > CLASS_CODE_SCTP_IPV6)
1999 return -EINVAL;
2000
2001 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2002 return 0;
2003 }
2004
2005 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
2006 {
2007 if (class_code < CLASS_CODE_USER_PROG1 ||
2008 class_code > CLASS_CODE_SCTP_IPV6)
2009 return -EINVAL;
2010
2011 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
2012 return 0;
2013 }
2014
2015 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
2016 u32 offset, u32 size)
2017 {
2018 int i = skb_shinfo(skb)->nr_frags;
2019 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2020
2021 frag->page = page;
2022 frag->page_offset = offset;
2023 frag->size = size;
2024
2025 skb->len += size;
2026 skb->data_len += size;
2027 skb->truesize += size;
2028
2029 skb_shinfo(skb)->nr_frags = i + 1;
2030 }
2031
2032 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
2033 {
2034 a >>= PAGE_SHIFT;
2035 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
2036
2037 return (a & (MAX_RBR_RING_SIZE - 1));
2038 }
2039
2040 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
2041 struct page ***link)
2042 {
2043 unsigned int h = niu_hash_rxaddr(rp, addr);
2044 struct page *p, **pp;
2045
2046 addr &= PAGE_MASK;
2047 pp = &rp->rxhash[h];
2048 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
2049 if (p->index == addr) {
2050 *link = pp;
2051 break;
2052 }
2053 }
2054
2055 return p;
2056 }
2057
2058 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
2059 {
2060 unsigned int h = niu_hash_rxaddr(rp, base);
2061
2062 page->index = base;
2063 page->mapping = (struct address_space *) rp->rxhash[h];
2064 rp->rxhash[h] = page;
2065 }
2066
2067 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
2068 gfp_t mask, int start_index)
2069 {
2070 struct page *page;
2071 u64 addr;
2072 int i;
2073
2074 page = alloc_page(mask);
2075 if (!page)
2076 return -ENOMEM;
2077
2078 addr = np->ops->map_page(np->device, page, 0,
2079 PAGE_SIZE, DMA_FROM_DEVICE);
2080
2081 niu_hash_page(rp, page, addr);
2082 if (rp->rbr_blocks_per_page > 1)
2083 atomic_add(rp->rbr_blocks_per_page - 1,
2084 &compound_head(page)->_count);
2085
2086 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
2087 __le32 *rbr = &rp->rbr[start_index + i];
2088
2089 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
2090 addr += rp->rbr_block_size;
2091 }
2092
2093 return 0;
2094 }
2095
2096 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2097 {
2098 int index = rp->rbr_index;
2099
2100 rp->rbr_pending++;
2101 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
2102 int err = niu_rbr_add_page(np, rp, mask, index);
2103
2104 if (unlikely(err)) {
2105 rp->rbr_pending--;
2106 return;
2107 }
2108
2109 rp->rbr_index += rp->rbr_blocks_per_page;
2110 BUG_ON(rp->rbr_index > rp->rbr_table_size);
2111 if (rp->rbr_index == rp->rbr_table_size)
2112 rp->rbr_index = 0;
2113
2114 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
2115 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
2116 rp->rbr_pending = 0;
2117 }
2118 }
2119 }
2120
2121 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
2122 {
2123 unsigned int index = rp->rcr_index;
2124 int num_rcr = 0;
2125
2126 rp->rx_dropped++;
2127 while (1) {
2128 struct page *page, **link;
2129 u64 addr, val;
2130 u32 rcr_size;
2131
2132 num_rcr++;
2133
2134 val = le64_to_cpup(&rp->rcr[index]);
2135 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2136 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2137 page = niu_find_rxpage(rp, addr, &link);
2138
2139 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2140 RCR_ENTRY_PKTBUFSZ_SHIFT];
2141 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
2142 *link = (struct page *) page->mapping;
2143 np->ops->unmap_page(np->device, page->index,
2144 PAGE_SIZE, DMA_FROM_DEVICE);
2145 page->index = 0;
2146 page->mapping = NULL;
2147 __free_page(page);
2148 rp->rbr_refill_pending++;
2149 }
2150
2151 index = NEXT_RCR(rp, index);
2152 if (!(val & RCR_ENTRY_MULTI))
2153 break;
2154
2155 }
2156 rp->rcr_index = index;
2157
2158 return num_rcr;
2159 }
2160
2161 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
2162 {
2163 unsigned int index = rp->rcr_index;
2164 struct sk_buff *skb;
2165 int len, num_rcr;
2166
2167 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
2168 if (unlikely(!skb))
2169 return niu_rx_pkt_ignore(np, rp);
2170
2171 num_rcr = 0;
2172 while (1) {
2173 struct page *page, **link;
2174 u32 rcr_size, append_size;
2175 u64 addr, val, off;
2176
2177 num_rcr++;
2178
2179 val = le64_to_cpup(&rp->rcr[index]);
2180
2181 len = (val & RCR_ENTRY_L2_LEN) >>
2182 RCR_ENTRY_L2_LEN_SHIFT;
2183 len -= ETH_FCS_LEN;
2184
2185 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
2186 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
2187 page = niu_find_rxpage(rp, addr, &link);
2188
2189 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
2190 RCR_ENTRY_PKTBUFSZ_SHIFT];
2191
2192 off = addr & ~PAGE_MASK;
2193 append_size = rcr_size;
2194 if (num_rcr == 1) {
2195 int ptype;
2196
2197 off += 2;
2198 append_size -= 2;
2199
2200 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
2201 if ((ptype == RCR_PKT_TYPE_TCP ||
2202 ptype == RCR_PKT_TYPE_UDP) &&
2203 !(val & (RCR_ENTRY_NOPORT |
2204 RCR_ENTRY_ERROR)))
2205 skb->ip_summed = CHECKSUM_UNNECESSARY;
2206 else
2207 skb->ip_summed = CHECKSUM_NONE;
2208 }
2209 if (!(val & RCR_ENTRY_MULTI))
2210 append_size = len - skb->len;
2211
2212 niu_rx_skb_append(skb, page, off, append_size);
2213 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
2214 *link = (struct page *) page->mapping;
2215 np->ops->unmap_page(np->device, page->index,
2216 PAGE_SIZE, DMA_FROM_DEVICE);
2217 page->index = 0;
2218 page->mapping = NULL;
2219 rp->rbr_refill_pending++;
2220 } else
2221 get_page(page);
2222
2223 index = NEXT_RCR(rp, index);
2224 if (!(val & RCR_ENTRY_MULTI))
2225 break;
2226
2227 }
2228 rp->rcr_index = index;
2229
2230 skb_reserve(skb, NET_IP_ALIGN);
2231 __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
2232
2233 rp->rx_packets++;
2234 rp->rx_bytes += skb->len;
2235
2236 skb->protocol = eth_type_trans(skb, np->dev);
2237 netif_receive_skb(skb);
2238
2239 return num_rcr;
2240 }
2241
2242 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
2243 {
2244 int blocks_per_page = rp->rbr_blocks_per_page;
2245 int err, index = rp->rbr_index;
2246
2247 err = 0;
2248 while (index < (rp->rbr_table_size - blocks_per_page)) {
2249 err = niu_rbr_add_page(np, rp, mask, index);
2250 if (err)
2251 break;
2252
2253 index += blocks_per_page;
2254 }
2255
2256 rp->rbr_index = index;
2257 return err;
2258 }
2259
2260 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
2261 {
2262 int i;
2263
2264 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
2265 struct page *page;
2266
2267 page = rp->rxhash[i];
2268 while (page) {
2269 struct page *next = (struct page *) page->mapping;
2270 u64 base = page->index;
2271
2272 np->ops->unmap_page(np->device, base, PAGE_SIZE,
2273 DMA_FROM_DEVICE);
2274 page->index = 0;
2275 page->mapping = NULL;
2276
2277 __free_page(page);
2278
2279 page = next;
2280 }
2281 }
2282
2283 for (i = 0; i < rp->rbr_table_size; i++)
2284 rp->rbr[i] = cpu_to_le32(0);
2285 rp->rbr_index = 0;
2286 }
2287
2288 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
2289 {
2290 struct tx_buff_info *tb = &rp->tx_buffs[idx];
2291 struct sk_buff *skb = tb->skb;
2292 struct tx_pkt_hdr *tp;
2293 u64 tx_flags;
2294 int i, len;
2295
2296 tp = (struct tx_pkt_hdr *) skb->data;
2297 tx_flags = le64_to_cpup(&tp->flags);
2298
2299 rp->tx_packets++;
2300 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
2301 ((tx_flags & TXHDR_PAD) / 2));
2302
2303 len = skb_headlen(skb);
2304 np->ops->unmap_single(np->device, tb->mapping,
2305 len, DMA_TO_DEVICE);
2306
2307 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
2308 rp->mark_pending--;
2309
2310 tb->skb = NULL;
2311 do {
2312 idx = NEXT_TX(rp, idx);
2313 len -= MAX_TX_DESC_LEN;
2314 } while (len > 0);
2315
2316 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2317 tb = &rp->tx_buffs[idx];
2318 BUG_ON(tb->skb != NULL);
2319 np->ops->unmap_page(np->device, tb->mapping,
2320 skb_shinfo(skb)->frags[i].size,
2321 DMA_TO_DEVICE);
2322 idx = NEXT_TX(rp, idx);
2323 }
2324
2325 dev_kfree_skb(skb);
2326
2327 return idx;
2328 }
2329
2330 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
2331
2332 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
2333 {
2334 u16 pkt_cnt, tmp;
2335 int cons;
2336 u64 cs;
2337
2338 cs = rp->tx_cs;
2339 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
2340 goto out;
2341
2342 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
2343 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
2344 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
2345
2346 rp->last_pkt_cnt = tmp;
2347
2348 cons = rp->cons;
2349
2350 niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
2351 np->dev->name, pkt_cnt, cons);
2352
2353 while (pkt_cnt--)
2354 cons = release_tx_packet(np, rp, cons);
2355
2356 rp->cons = cons;
2357 smp_mb();
2358
2359 out:
2360 if (unlikely(netif_queue_stopped(np->dev) &&
2361 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
2362 netif_tx_lock(np->dev);
2363 if (netif_queue_stopped(np->dev) &&
2364 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
2365 netif_wake_queue(np->dev);
2366 netif_tx_unlock(np->dev);
2367 }
2368 }
2369
2370 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
2371 {
2372 int qlen, rcr_done = 0, work_done = 0;
2373 struct rxdma_mailbox *mbox = rp->mbox;
2374 u64 stat;
2375
2376 #if 1
2377 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2378 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
2379 #else
2380 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2381 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
2382 #endif
2383 mbox->rx_dma_ctl_stat = 0;
2384 mbox->rcrstat_a = 0;
2385
2386 niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
2387 np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
2388
2389 rcr_done = work_done = 0;
2390 qlen = min(qlen, budget);
2391 while (work_done < qlen) {
2392 rcr_done += niu_process_rx_pkt(np, rp);
2393 work_done++;
2394 }
2395
2396 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
2397 unsigned int i;
2398
2399 for (i = 0; i < rp->rbr_refill_pending; i++)
2400 niu_rbr_refill(np, rp, GFP_ATOMIC);
2401 rp->rbr_refill_pending = 0;
2402 }
2403
2404 stat = (RX_DMA_CTL_STAT_MEX |
2405 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
2406 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
2407
2408 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
2409
2410 return work_done;
2411 }
2412
2413 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
2414 {
2415 u64 v0 = lp->v0;
2416 u32 tx_vec = (v0 >> 32);
2417 u32 rx_vec = (v0 & 0xffffffff);
2418 int i, work_done = 0;
2419
2420 niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
2421 np->dev->name, (unsigned long long) v0);
2422
2423 for (i = 0; i < np->num_tx_rings; i++) {
2424 struct tx_ring_info *rp = &np->tx_rings[i];
2425 if (tx_vec & (1 << rp->tx_channel))
2426 niu_tx_work(np, rp);
2427 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
2428 }
2429
2430 for (i = 0; i < np->num_rx_rings; i++) {
2431 struct rx_ring_info *rp = &np->rx_rings[i];
2432
2433 if (rx_vec & (1 << rp->rx_channel)) {
2434 int this_work_done;
2435
2436 this_work_done = niu_rx_work(np, rp,
2437 budget);
2438
2439 budget -= this_work_done;
2440 work_done += this_work_done;
2441 }
2442 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
2443 }
2444
2445 return work_done;
2446 }
2447
2448 static int niu_poll(struct napi_struct *napi, int budget)
2449 {
2450 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
2451 struct niu *np = lp->np;
2452 int work_done;
2453
2454 work_done = niu_poll_core(np, lp, budget);
2455
2456 if (work_done < budget) {
2457 netif_rx_complete(np->dev, napi);
2458 niu_ldg_rearm(np, lp, 1);
2459 }
2460 return work_done;
2461 }
2462
2463 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
2464 u64 stat)
2465 {
2466 dev_err(np->device, PFX "%s: RX channel %u errors ( ",
2467 np->dev->name, rp->rx_channel);
2468
2469 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
2470 printk("RBR_TMOUT ");
2471 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
2472 printk("RSP_CNT ");
2473 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
2474 printk("BYTE_EN_BUS ");
2475 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
2476 printk("RSP_DAT ");
2477 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
2478 printk("RCR_ACK ");
2479 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
2480 printk("RCR_SHA_PAR ");
2481 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
2482 printk("RBR_PRE_PAR ");
2483 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
2484 printk("CONFIG ");
2485 if (stat & RX_DMA_CTL_STAT_RCRINCON)
2486 printk("RCRINCON ");
2487 if (stat & RX_DMA_CTL_STAT_RCRFULL)
2488 printk("RCRFULL ");
2489 if (stat & RX_DMA_CTL_STAT_RBRFULL)
2490 printk("RBRFULL ");
2491 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
2492 printk("RBRLOGPAGE ");
2493 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
2494 printk("CFIGLOGPAGE ");
2495 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
2496 printk("DC_FIDO ");
2497
2498 printk(")\n");
2499 }
2500
2501 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
2502 {
2503 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
2504 int err = 0;
2505
2506 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
2507 np->dev->name, rp->rx_channel, (unsigned long long) stat);
2508
2509 niu_log_rxchan_errors(np, rp, stat);
2510
2511 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
2512 RX_DMA_CTL_STAT_PORT_FATAL))
2513 err = -EINVAL;
2514
2515 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
2516 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
2517
2518 return err;
2519 }
2520
2521 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
2522 u64 cs)
2523 {
2524 dev_err(np->device, PFX "%s: TX channel %u errors ( ",
2525 np->dev->name, rp->tx_channel);
2526
2527 if (cs & TX_CS_MBOX_ERR)
2528 printk("MBOX ");
2529 if (cs & TX_CS_PKT_SIZE_ERR)
2530 printk("PKT_SIZE ");
2531 if (cs & TX_CS_TX_RING_OFLOW)
2532 printk("TX_RING_OFLOW ");
2533 if (cs & TX_CS_PREF_BUF_PAR_ERR)
2534 printk("PREF_BUF_PAR ");
2535 if (cs & TX_CS_NACK_PREF)
2536 printk("NACK_PREF ");
2537 if (cs & TX_CS_NACK_PKT_RD)
2538 printk("NACK_PKT_RD ");
2539 if (cs & TX_CS_CONF_PART_ERR)
2540 printk("CONF_PART ");
2541 if (cs & TX_CS_PKT_PRT_ERR)
2542 printk("PKT_PTR ");
2543
2544 printk(")\n");
2545 }
2546
2547 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
2548 {
2549 u64 cs, logh, logl;
2550
2551 cs = nr64(TX_CS(rp->tx_channel));
2552 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
2553 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
2554
2555 dev_err(np->device, PFX "%s: TX channel %u error, "
2556 "cs[%llx] logh[%llx] logl[%llx]\n",
2557 np->dev->name, rp->tx_channel,
2558 (unsigned long long) cs,
2559 (unsigned long long) logh,
2560 (unsigned long long) logl);
2561
2562 niu_log_txchan_errors(np, rp, cs);
2563
2564 return -ENODEV;
2565 }
2566
2567 static int niu_mif_interrupt(struct niu *np)
2568 {
2569 u64 mif_status = nr64(MIF_STATUS);
2570 int phy_mdint = 0;
2571
2572 if (np->flags & NIU_FLAGS_XMAC) {
2573 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
2574
2575 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
2576 phy_mdint = 1;
2577 }
2578
2579 dev_err(np->device, PFX "%s: MIF interrupt, "
2580 "stat[%llx] phy_mdint(%d)\n",
2581 np->dev->name, (unsigned long long) mif_status, phy_mdint);
2582
2583 return -ENODEV;
2584 }
2585
2586 static void niu_xmac_interrupt(struct niu *np)
2587 {
2588 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
2589 u64 val;
2590
2591 val = nr64_mac(XTXMAC_STATUS);
2592 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
2593 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
2594 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
2595 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
2596 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
2597 mp->tx_fifo_errors++;
2598 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
2599 mp->tx_overflow_errors++;
2600 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
2601 mp->tx_max_pkt_size_errors++;
2602 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
2603 mp->tx_underflow_errors++;
2604
2605 val = nr64_mac(XRXMAC_STATUS);
2606 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
2607 mp->rx_local_faults++;
2608 if (val & XRXMAC_STATUS_RFLT_DET)
2609 mp->rx_remote_faults++;
2610 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
2611 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
2612 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
2613 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
2614 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
2615 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
2616 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
2617 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
2618 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2619 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2620 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
2621 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
2622 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
2623 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
2624 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
2625 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
2626 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
2627 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
2628 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
2629 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
2630 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
2631 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
2632 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
2633 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
2634 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
2635 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
2636 if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
2637 mp->rx_octets += RXMAC_BT_CNT_COUNT;
2638 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
2639 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
2640 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
2641 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
2642 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
2643 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
2644 if (val & XRXMAC_STATUS_RXUFLOW)
2645 mp->rx_underflows++;
2646 if (val & XRXMAC_STATUS_RXOFLOW)
2647 mp->rx_overflows++;
2648
2649 val = nr64_mac(XMAC_FC_STAT);
2650 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
2651 mp->pause_off_state++;
2652 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
2653 mp->pause_on_state++;
2654 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
2655 mp->pause_received++;
2656 }
2657
2658 static void niu_bmac_interrupt(struct niu *np)
2659 {
2660 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
2661 u64 val;
2662
2663 val = nr64_mac(BTXMAC_STATUS);
2664 if (val & BTXMAC_STATUS_UNDERRUN)
2665 mp->tx_underflow_errors++;
2666 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
2667 mp->tx_max_pkt_size_errors++;
2668 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
2669 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
2670 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
2671 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
2672
2673 val = nr64_mac(BRXMAC_STATUS);
2674 if (val & BRXMAC_STATUS_OVERFLOW)
2675 mp->rx_overflows++;
2676 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
2677 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
2678 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
2679 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2680 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
2681 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
2682 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
2683 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
2684
2685 val = nr64_mac(BMAC_CTRL_STATUS);
2686 if (val & BMAC_CTRL_STATUS_NOPAUSE)
2687 mp->pause_off_state++;
2688 if (val & BMAC_CTRL_STATUS_PAUSE)
2689 mp->pause_on_state++;
2690 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
2691 mp->pause_received++;
2692 }
2693
2694 static int niu_mac_interrupt(struct niu *np)
2695 {
2696 if (np->flags & NIU_FLAGS_XMAC)
2697 niu_xmac_interrupt(np);
2698 else
2699 niu_bmac_interrupt(np);
2700
2701 return 0;
2702 }
2703
2704 static void niu_log_device_error(struct niu *np, u64 stat)
2705 {
2706 dev_err(np->device, PFX "%s: Core device errors ( ",
2707 np->dev->name);
2708
2709 if (stat & SYS_ERR_MASK_META2)
2710 printk("META2 ");
2711 if (stat & SYS_ERR_MASK_META1)
2712 printk("META1 ");
2713 if (stat & SYS_ERR_MASK_PEU)
2714 printk("PEU ");
2715 if (stat & SYS_ERR_MASK_TXC)
2716 printk("TXC ");
2717 if (stat & SYS_ERR_MASK_RDMC)
2718 printk("RDMC ");
2719 if (stat & SYS_ERR_MASK_TDMC)
2720 printk("TDMC ");
2721 if (stat & SYS_ERR_MASK_ZCP)
2722 printk("ZCP ");
2723 if (stat & SYS_ERR_MASK_FFLP)
2724 printk("FFLP ");
2725 if (stat & SYS_ERR_MASK_IPP)
2726 printk("IPP ");
2727 if (stat & SYS_ERR_MASK_MAC)
2728 printk("MAC ");
2729 if (stat & SYS_ERR_MASK_SMX)
2730 printk("SMX ");
2731
2732 printk(")\n");
2733 }
2734
2735 static int niu_device_error(struct niu *np)
2736 {
2737 u64 stat = nr64(SYS_ERR_STAT);
2738
2739 dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
2740 np->dev->name, (unsigned long long) stat);
2741
2742 niu_log_device_error(np, stat);
2743
2744 return -ENODEV;
2745 }
2746
2747 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp)
2748 {
2749 u64 v0 = lp->v0;
2750 u64 v1 = lp->v1;
2751 u64 v2 = lp->v2;
2752 int i, err = 0;
2753
2754 if (v1 & 0x00000000ffffffffULL) {
2755 u32 rx_vec = (v1 & 0xffffffff);
2756
2757 for (i = 0; i < np->num_rx_rings; i++) {
2758 struct rx_ring_info *rp = &np->rx_rings[i];
2759
2760 if (rx_vec & (1 << rp->rx_channel)) {
2761 int r = niu_rx_error(np, rp);
2762 if (r)
2763 err = r;
2764 }
2765 }
2766 }
2767 if (v1 & 0x7fffffff00000000ULL) {
2768 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
2769
2770 for (i = 0; i < np->num_tx_rings; i++) {
2771 struct tx_ring_info *rp = &np->tx_rings[i];
2772
2773 if (tx_vec & (1 << rp->tx_channel)) {
2774 int r = niu_tx_error(np, rp);
2775 if (r)
2776 err = r;
2777 }
2778 }
2779 }
2780 if ((v0 | v1) & 0x8000000000000000ULL) {
2781 int r = niu_mif_interrupt(np);
2782 if (r)
2783 err = r;
2784 }
2785 if (v2) {
2786 if (v2 & 0x01ef) {
2787 int r = niu_mac_interrupt(np);
2788 if (r)
2789 err = r;
2790 }
2791 if (v2 & 0x0210) {
2792 int r = niu_device_error(np);
2793 if (r)
2794 err = r;
2795 }
2796 }
2797
2798 if (err)
2799 niu_enable_interrupts(np, 0);
2800
2801 return -EINVAL;
2802 }
2803
2804 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
2805 int ldn)
2806 {
2807 struct rxdma_mailbox *mbox = rp->mbox;
2808 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
2809
2810 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
2811 RX_DMA_CTL_STAT_RCRTO);
2812 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
2813
2814 niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
2815 np->dev->name, (unsigned long long) stat);
2816 }
2817
2818 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
2819 int ldn)
2820 {
2821 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
2822
2823 niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
2824 np->dev->name, (unsigned long long) rp->tx_cs);
2825 }
2826
2827 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
2828 {
2829 struct niu_parent *parent = np->parent;
2830 u32 rx_vec, tx_vec;
2831 int i;
2832
2833 tx_vec = (v0 >> 32);
2834 rx_vec = (v0 & 0xffffffff);
2835
2836 for (i = 0; i < np->num_rx_rings; i++) {
2837 struct rx_ring_info *rp = &np->rx_rings[i];
2838 int ldn = LDN_RXDMA(rp->rx_channel);
2839
2840 if (parent->ldg_map[ldn] != ldg)
2841 continue;
2842
2843 nw64(LD_IM0(ldn), LD_IM0_MASK);
2844 if (rx_vec & (1 << rp->rx_channel))
2845 niu_rxchan_intr(np, rp, ldn);
2846 }
2847
2848 for (i = 0; i < np->num_tx_rings; i++) {
2849 struct tx_ring_info *rp = &np->tx_rings[i];
2850 int ldn = LDN_TXDMA(rp->tx_channel);
2851
2852 if (parent->ldg_map[ldn] != ldg)
2853 continue;
2854
2855 nw64(LD_IM0(ldn), LD_IM0_MASK);
2856 if (tx_vec & (1 << rp->tx_channel))
2857 niu_txchan_intr(np, rp, ldn);
2858 }
2859 }
2860
2861 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
2862 u64 v0, u64 v1, u64 v2)
2863 {
2864 if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
2865 lp->v0 = v0;
2866 lp->v1 = v1;
2867 lp->v2 = v2;
2868 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
2869 __netif_rx_schedule(np->dev, &lp->napi);
2870 }
2871 }
2872
2873 static irqreturn_t niu_interrupt(int irq, void *dev_id)
2874 {
2875 struct niu_ldg *lp = dev_id;
2876 struct niu *np = lp->np;
2877 int ldg = lp->ldg_num;
2878 unsigned long flags;
2879 u64 v0, v1, v2;
2880
2881 if (netif_msg_intr(np))
2882 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
2883 lp, ldg);
2884
2885 spin_lock_irqsave(&np->lock, flags);
2886
2887 v0 = nr64(LDSV0(ldg));
2888 v1 = nr64(LDSV1(ldg));
2889 v2 = nr64(LDSV2(ldg));
2890
2891 if (netif_msg_intr(np))
2892 printk("v0[%llx] v1[%llx] v2[%llx]\n",
2893 (unsigned long long) v0,
2894 (unsigned long long) v1,
2895 (unsigned long long) v2);
2896
2897 if (unlikely(!v0 && !v1 && !v2)) {
2898 spin_unlock_irqrestore(&np->lock, flags);
2899 return IRQ_NONE;
2900 }
2901
2902 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
2903 int err = niu_slowpath_interrupt(np, lp);
2904 if (err)
2905 goto out;
2906 }
2907 if (likely(v0 & ~((u64)1 << LDN_MIF)))
2908 niu_schedule_napi(np, lp, v0, v1, v2);
2909 else
2910 niu_ldg_rearm(np, lp, 1);
2911 out:
2912 spin_unlock_irqrestore(&np->lock, flags);
2913
2914 return IRQ_HANDLED;
2915 }
2916
2917 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
2918 {
2919 if (rp->mbox) {
2920 np->ops->free_coherent(np->device,
2921 sizeof(struct rxdma_mailbox),
2922 rp->mbox, rp->mbox_dma);
2923 rp->mbox = NULL;
2924 }
2925 if (rp->rcr) {
2926 np->ops->free_coherent(np->device,
2927 MAX_RCR_RING_SIZE * sizeof(__le64),
2928 rp->rcr, rp->rcr_dma);
2929 rp->rcr = NULL;
2930 rp->rcr_table_size = 0;
2931 rp->rcr_index = 0;
2932 }
2933 if (rp->rbr) {
2934 niu_rbr_free(np, rp);
2935
2936 np->ops->free_coherent(np->device,
2937 MAX_RBR_RING_SIZE * sizeof(__le32),
2938 rp->rbr, rp->rbr_dma);
2939 rp->rbr = NULL;
2940 rp->rbr_table_size = 0;
2941 rp->rbr_index = 0;
2942 }
2943 kfree(rp->rxhash);
2944 rp->rxhash = NULL;
2945 }
2946
2947 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
2948 {
2949 if (rp->mbox) {
2950 np->ops->free_coherent(np->device,
2951 sizeof(struct txdma_mailbox),
2952 rp->mbox, rp->mbox_dma);
2953 rp->mbox = NULL;
2954 }
2955 if (rp->descr) {
2956 int i;
2957
2958 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
2959 if (rp->tx_buffs[i].skb)
2960 (void) release_tx_packet(np, rp, i);
2961 }
2962
2963 np->ops->free_coherent(np->device,
2964 MAX_TX_RING_SIZE * sizeof(__le64),
2965 rp->descr, rp->descr_dma);
2966 rp->descr = NULL;
2967 rp->pending = 0;
2968 rp->prod = 0;
2969 rp->cons = 0;
2970 rp->wrap_bit = 0;
2971 }
2972 }
2973
2974 static void niu_free_channels(struct niu *np)
2975 {
2976 int i;
2977
2978 if (np->rx_rings) {
2979 for (i = 0; i < np->num_rx_rings; i++) {
2980 struct rx_ring_info *rp = &np->rx_rings[i];
2981
2982 niu_free_rx_ring_info(np, rp);
2983 }
2984 kfree(np->rx_rings);
2985 np->rx_rings = NULL;
2986 np->num_rx_rings = 0;
2987 }
2988
2989 if (np->tx_rings) {
2990 for (i = 0; i < np->num_tx_rings; i++) {
2991 struct tx_ring_info *rp = &np->tx_rings[i];
2992
2993 niu_free_tx_ring_info(np, rp);
2994 }
2995 kfree(np->tx_rings);
2996 np->tx_rings = NULL;
2997 np->num_tx_rings = 0;
2998 }
2999 }
3000
3001 static int niu_alloc_rx_ring_info(struct niu *np,
3002 struct rx_ring_info *rp)
3003 {
3004 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
3005
3006 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
3007 GFP_KERNEL);
3008 if (!rp->rxhash)
3009 return -ENOMEM;
3010
3011 rp->mbox = np->ops->alloc_coherent(np->device,
3012 sizeof(struct rxdma_mailbox),
3013 &rp->mbox_dma, GFP_KERNEL);
3014 if (!rp->mbox)
3015 return -ENOMEM;
3016 if ((unsigned long)rp->mbox & (64UL - 1)) {
3017 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3018 "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
3019 return -EINVAL;
3020 }
3021
3022 rp->rcr = np->ops->alloc_coherent(np->device,
3023 MAX_RCR_RING_SIZE * sizeof(__le64),
3024 &rp->rcr_dma, GFP_KERNEL);
3025 if (!rp->rcr)
3026 return -ENOMEM;
3027 if ((unsigned long)rp->rcr & (64UL - 1)) {
3028 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3029 "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
3030 return -EINVAL;
3031 }
3032 rp->rcr_table_size = MAX_RCR_RING_SIZE;
3033 rp->rcr_index = 0;
3034
3035 rp->rbr = np->ops->alloc_coherent(np->device,
3036 MAX_RBR_RING_SIZE * sizeof(__le32),
3037 &rp->rbr_dma, GFP_KERNEL);
3038 if (!rp->rbr)
3039 return -ENOMEM;
3040 if ((unsigned long)rp->rbr & (64UL - 1)) {
3041 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3042 "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
3043 return -EINVAL;
3044 }
3045 rp->rbr_table_size = MAX_RBR_RING_SIZE;
3046 rp->rbr_index = 0;
3047 rp->rbr_pending = 0;
3048
3049 return 0;
3050 }
3051
3052 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
3053 {
3054 int mtu = np->dev->mtu;
3055
3056 /* These values are recommended by the HW designers for fair
3057 * utilization of DRR amongst the rings.
3058 */
3059 rp->max_burst = mtu + 32;
3060 if (rp->max_burst > 4096)
3061 rp->max_burst = 4096;
3062 }
3063
3064 static int niu_alloc_tx_ring_info(struct niu *np,
3065 struct tx_ring_info *rp)
3066 {
3067 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
3068
3069 rp->mbox = np->ops->alloc_coherent(np->device,
3070 sizeof(struct txdma_mailbox),
3071 &rp->mbox_dma, GFP_KERNEL);
3072 if (!rp->mbox)
3073 return -ENOMEM;
3074 if ((unsigned long)rp->mbox & (64UL - 1)) {
3075 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3076 "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
3077 return -EINVAL;
3078 }
3079
3080 rp->descr = np->ops->alloc_coherent(np->device,
3081 MAX_TX_RING_SIZE * sizeof(__le64),
3082 &rp->descr_dma, GFP_KERNEL);
3083 if (!rp->descr)
3084 return -ENOMEM;
3085 if ((unsigned long)rp->descr & (64UL - 1)) {
3086 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
3087 "TXDMA descr table %p\n", np->dev->name, rp->descr);
3088 return -EINVAL;
3089 }
3090
3091 rp->pending = MAX_TX_RING_SIZE;
3092 rp->prod = 0;
3093 rp->cons = 0;
3094 rp->wrap_bit = 0;
3095
3096 /* XXX make these configurable... XXX */
3097 rp->mark_freq = rp->pending / 4;
3098
3099 niu_set_max_burst(np, rp);
3100
3101 return 0;
3102 }
3103
3104 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
3105 {
3106 u16 bs;
3107
3108 switch (PAGE_SIZE) {
3109 case 4 * 1024:
3110 case 8 * 1024:
3111 case 16 * 1024:
3112 case 32 * 1024:
3113 rp->rbr_block_size = PAGE_SIZE;
3114 rp->rbr_blocks_per_page = 1;
3115 break;
3116
3117 default:
3118 if (PAGE_SIZE % (32 * 1024) == 0)
3119 bs = 32 * 1024;
3120 else if (PAGE_SIZE % (16 * 1024) == 0)
3121 bs = 16 * 1024;
3122 else if (PAGE_SIZE % (8 * 1024) == 0)
3123 bs = 8 * 1024;
3124 else if (PAGE_SIZE % (4 * 1024) == 0)
3125 bs = 4 * 1024;
3126 else
3127 BUG();
3128 rp->rbr_block_size = bs;
3129 rp->rbr_blocks_per_page = PAGE_SIZE / bs;
3130 }
3131
3132 rp->rbr_sizes[0] = 256;
3133 rp->rbr_sizes[1] = 1024;
3134 if (np->dev->mtu > ETH_DATA_LEN) {
3135 switch (PAGE_SIZE) {
3136 case 4 * 1024:
3137 rp->rbr_sizes[2] = 4096;
3138 break;
3139
3140 default:
3141 rp->rbr_sizes[2] = 8192;
3142 break;
3143 }
3144 } else {
3145 rp->rbr_sizes[2] = 2048;
3146 }
3147 rp->rbr_sizes[3] = rp->rbr_block_size;
3148 }
3149
3150 static int niu_alloc_channels(struct niu *np)
3151 {
3152 struct niu_parent *parent = np->parent;
3153 int first_rx_channel, first_tx_channel;
3154 int i, port, err;
3155
3156 port = np->port;
3157 first_rx_channel = first_tx_channel = 0;
3158 for (i = 0; i < port; i++) {
3159 first_rx_channel += parent->rxchan_per_port[i];
3160 first_tx_channel += parent->txchan_per_port[i];
3161 }
3162
3163 np->num_rx_rings = parent->rxchan_per_port[port];
3164 np->num_tx_rings = parent->txchan_per_port[port];
3165
3166 np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
3167 GFP_KERNEL);
3168 err = -ENOMEM;
3169 if (!np->rx_rings)
3170 goto out_err;
3171
3172 for (i = 0; i < np->num_rx_rings; i++) {
3173 struct rx_ring_info *rp = &np->rx_rings[i];
3174
3175 rp->np = np;
3176 rp->rx_channel = first_rx_channel + i;
3177
3178 err = niu_alloc_rx_ring_info(np, rp);
3179 if (err)
3180 goto out_err;
3181
3182 niu_size_rbr(np, rp);
3183
3184 /* XXX better defaults, configurable, etc... XXX */
3185 rp->nonsyn_window = 64;
3186 rp->nonsyn_threshold = rp->rcr_table_size - 64;
3187 rp->syn_window = 64;
3188 rp->syn_threshold = rp->rcr_table_size - 64;
3189 rp->rcr_pkt_threshold = 16;
3190 rp->rcr_timeout = 8;
3191 rp->rbr_kick_thresh = RBR_REFILL_MIN;
3192 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
3193 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
3194
3195 err = niu_rbr_fill(np, rp, GFP_KERNEL);
3196 if (err)
3197 return err;
3198 }
3199
3200 np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
3201 GFP_KERNEL);
3202 err = -ENOMEM;
3203 if (!np->tx_rings)
3204 goto out_err;
3205
3206 for (i = 0; i < np->num_tx_rings; i++) {
3207 struct tx_ring_info *rp = &np->tx_rings[i];
3208
3209 rp->np = np;
3210 rp->tx_channel = first_tx_channel + i;
3211
3212 err = niu_alloc_tx_ring_info(np, rp);
3213 if (err)
3214 goto out_err;
3215 }
3216
3217 return 0;
3218
3219 out_err:
3220 niu_free_channels(np);
3221 return err;
3222 }
3223
3224 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
3225 {
3226 int limit = 1000;
3227
3228 while (--limit > 0) {
3229 u64 val = nr64(TX_CS(channel));
3230 if (val & TX_CS_SNG_STATE)
3231 return 0;
3232 }
3233 return -ENODEV;
3234 }
3235
3236 static int niu_tx_channel_stop(struct niu *np, int channel)
3237 {
3238 u64 val = nr64(TX_CS(channel));
3239
3240 val |= TX_CS_STOP_N_GO;
3241 nw64(TX_CS(channel), val);
3242
3243 return niu_tx_cs_sng_poll(np, channel);
3244 }
3245
3246 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
3247 {
3248 int limit = 1000;
3249
3250 while (--limit > 0) {
3251 u64 val = nr64(TX_CS(channel));
3252 if (!(val & TX_CS_RST))
3253 return 0;
3254 }
3255 return -ENODEV;
3256 }
3257
3258 static int niu_tx_channel_reset(struct niu *np, int channel)
3259 {
3260 u64 val = nr64(TX_CS(channel));
3261 int err;
3262
3263 val |= TX_CS_RST;
3264 nw64(TX_CS(channel), val);
3265
3266 err = niu_tx_cs_reset_poll(np, channel);
3267 if (!err)
3268 nw64(TX_RING_KICK(channel), 0);
3269
3270 return err;
3271 }
3272
3273 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
3274 {
3275 u64 val;
3276
3277 nw64(TX_LOG_MASK1(channel), 0);
3278 nw64(TX_LOG_VAL1(channel), 0);
3279 nw64(TX_LOG_MASK2(channel), 0);
3280 nw64(TX_LOG_VAL2(channel), 0);
3281 nw64(TX_LOG_PAGE_RELO1(channel), 0);
3282 nw64(TX_LOG_PAGE_RELO2(channel), 0);
3283 nw64(TX_LOG_PAGE_HDL(channel), 0);
3284
3285 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
3286 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
3287 nw64(TX_LOG_PAGE_VLD(channel), val);
3288
3289 /* XXX TXDMA 32bit mode? XXX */
3290
3291 return 0;
3292 }
3293
3294 static void niu_txc_enable_port(struct niu *np, int on)
3295 {
3296 unsigned long flags;
3297 u64 val, mask;
3298
3299 niu_lock_parent(np, flags);
3300 val = nr64(TXC_CONTROL);
3301 mask = (u64)1 << np->port;
3302 if (on) {
3303 val |= TXC_CONTROL_ENABLE | mask;
3304 } else {
3305 val &= ~mask;
3306 if ((val & ~TXC_CONTROL_ENABLE) == 0)
3307 val &= ~TXC_CONTROL_ENABLE;
3308 }
3309 nw64(TXC_CONTROL, val);
3310 niu_unlock_parent(np, flags);
3311 }
3312
3313 static void niu_txc_set_imask(struct niu *np, u64 imask)
3314 {
3315 unsigned long flags;
3316 u64 val;
3317
3318 niu_lock_parent(np, flags);
3319 val = nr64(TXC_INT_MASK);
3320 val &= ~TXC_INT_MASK_VAL(np->port);
3321 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
3322 niu_unlock_parent(np, flags);
3323 }
3324
3325 static void niu_txc_port_dma_enable(struct niu *np, int on)
3326 {
3327 u64 val = 0;
3328
3329 if (on) {
3330 int i;
3331
3332 for (i = 0; i < np->num_tx_rings; i++)
3333 val |= (1 << np->tx_rings[i].tx_channel);
3334 }
3335 nw64(TXC_PORT_DMA(np->port), val);
3336 }
3337
3338 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
3339 {
3340 int err, channel = rp->tx_channel;
3341 u64 val, ring_len;
3342
3343 err = niu_tx_channel_stop(np, channel);
3344 if (err)
3345 return err;
3346
3347 err = niu_tx_channel_reset(np, channel);
3348 if (err)
3349 return err;
3350
3351 err = niu_tx_channel_lpage_init(np, channel);
3352 if (err)
3353 return err;
3354
3355 nw64(TXC_DMA_MAX(channel), rp->max_burst);
3356 nw64(TX_ENT_MSK(channel), 0);
3357
3358 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
3359 TX_RNG_CFIG_STADDR)) {
3360 dev_err(np->device, PFX "%s: TX ring channel %d "
3361 "DMA addr (%llx) is not aligned.\n",
3362 np->dev->name, channel,
3363 (unsigned long long) rp->descr_dma);
3364 return -EINVAL;
3365 }
3366
3367 /* The length field in TX_RNG_CFIG is measured in 64-byte
3368 * blocks. rp->pending is the number of TX descriptors in
3369 * our ring, 8 bytes each, thus we divide by 8 bytes more
3370 * to get the proper value the chip wants.
3371 */
3372 ring_len = (rp->pending / 8);
3373
3374 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
3375 rp->descr_dma);
3376 nw64(TX_RNG_CFIG(channel), val);
3377
3378 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
3379 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
3380 dev_err(np->device, PFX "%s: TX ring channel %d "
3381 "MBOX addr (%llx) is has illegal bits.\n",
3382 np->dev->name, channel,
3383 (unsigned long long) rp->mbox_dma);
3384 return -EINVAL;
3385 }
3386 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
3387 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
3388
3389 nw64(TX_CS(channel), 0);
3390
3391 rp->last_pkt_cnt = 0;
3392
3393 return 0;
3394 }
3395
3396 static void niu_init_rdc_groups(struct niu *np)
3397 {
3398 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
3399 int i, first_table_num = tp->first_table_num;
3400
3401 for (i = 0; i < tp->num_tables; i++) {
3402 struct rdc_table *tbl = &tp->tables[i];
3403 int this_table = first_table_num + i;
3404 int slot;
3405
3406 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
3407 nw64(RDC_TBL(this_table, slot),
3408 tbl->rxdma_channel[slot]);
3409 }
3410
3411 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
3412 }
3413
3414 static void niu_init_drr_weight(struct niu *np)
3415 {
3416 int type = phy_decode(np->parent->port_phy, np->port);
3417 u64 val;
3418
3419 switch (type) {
3420 case PORT_TYPE_10G:
3421 val = PT_DRR_WEIGHT_DEFAULT_10G;
3422 break;
3423
3424 case PORT_TYPE_1G:
3425 default:
3426 val = PT_DRR_WEIGHT_DEFAULT_1G;
3427 break;
3428 }
3429 nw64(PT_DRR_WT(np->port), val);
3430 }
3431
3432 static int niu_init_hostinfo(struct niu *np)
3433 {
3434 struct niu_parent *parent = np->parent;
3435 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
3436 int i, err, num_alt = niu_num_alt_addr(np);
3437 int first_rdc_table = tp->first_table_num;
3438
3439 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
3440 if (err)
3441 return err;
3442
3443 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
3444 if (err)
3445 return err;
3446
3447 for (i = 0; i < num_alt; i++) {
3448 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
3449 if (err)
3450 return err;
3451 }
3452
3453 return 0;
3454 }
3455
3456 static int niu_rx_channel_reset(struct niu *np, int channel)
3457 {
3458 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
3459 RXDMA_CFIG1_RST, 1000, 10,
3460 "RXDMA_CFIG1");
3461 }
3462
3463 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
3464 {
3465 u64 val;
3466
3467 nw64(RX_LOG_MASK1(channel), 0);
3468 nw64(RX_LOG_VAL1(channel), 0);
3469 nw64(RX_LOG_MASK2(channel), 0);
3470 nw64(RX_LOG_VAL2(channel), 0);
3471 nw64(RX_LOG_PAGE_RELO1(channel), 0);
3472 nw64(RX_LOG_PAGE_RELO2(channel), 0);
3473 nw64(RX_LOG_PAGE_HDL(channel), 0);
3474
3475 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
3476 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
3477 nw64(RX_LOG_PAGE_VLD(channel), val);
3478
3479 return 0;
3480 }
3481
3482 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
3483 {
3484 u64 val;
3485
3486 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
3487 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
3488 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
3489 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
3490 nw64(RDC_RED_PARA(rp->rx_channel), val);
3491 }
3492
3493 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
3494 {
3495 u64 val = 0;
3496
3497 switch (rp->rbr_block_size) {
3498 case 4 * 1024:
3499 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
3500 break;
3501 case 8 * 1024:
3502 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
3503 break;
3504 case 16 * 1024:
3505 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
3506 break;
3507 case 32 * 1024:
3508 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
3509 break;
3510 default:
3511 return -EINVAL;
3512 }
3513 val |= RBR_CFIG_B_VLD2;
3514 switch (rp->rbr_sizes[2]) {
3515 case 2 * 1024:
3516 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
3517 break;
3518 case 4 * 1024:
3519 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
3520 break;
3521 case 8 * 1024:
3522 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
3523 break;
3524 case 16 * 1024:
3525 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
3526 break;
3527
3528 default:
3529 return -EINVAL;
3530 }
3531 val |= RBR_CFIG_B_VLD1;
3532 switch (rp->rbr_sizes[1]) {
3533 case 1 * 1024:
3534 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
3535 break;
3536 case 2 * 1024:
3537 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
3538 break;
3539 case 4 * 1024:
3540 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
3541 break;
3542 case 8 * 1024:
3543 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
3544 break;
3545
3546 default:
3547 return -EINVAL;
3548 }
3549 val |= RBR_CFIG_B_VLD0;
3550 switch (rp->rbr_sizes[0]) {
3551 case 256:
3552 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
3553 break;
3554 case 512:
3555 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
3556 break;
3557 case 1 * 1024:
3558 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
3559 break;
3560 case 2 * 1024:
3561 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
3562 break;
3563
3564 default:
3565 return -EINVAL;
3566 }
3567
3568 *ret = val;
3569 return 0;
3570 }
3571
3572 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
3573 {
3574 u64 val = nr64(RXDMA_CFIG1(channel));
3575 int limit;
3576
3577 if (on)
3578 val |= RXDMA_CFIG1_EN;
3579 else
3580 val &= ~RXDMA_CFIG1_EN;
3581 nw64(RXDMA_CFIG1(channel), val);
3582
3583 limit = 1000;
3584 while (--limit > 0) {
3585 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
3586 break;
3587 udelay(10);
3588 }
3589 if (limit <= 0)
3590 return -ENODEV;
3591 return 0;
3592 }
3593
3594 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
3595 {
3596 int err, channel = rp->rx_channel;
3597 u64 val;
3598
3599 err = niu_rx_channel_reset(np, channel);
3600 if (err)
3601 return err;
3602
3603 err = niu_rx_channel_lpage_init(np, channel);
3604 if (err)
3605 return err;
3606
3607 niu_rx_channel_wred_init(np, rp);
3608
3609 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
3610 nw64(RX_DMA_CTL_STAT(channel),
3611 (RX_DMA_CTL_STAT_MEX |
3612 RX_DMA_CTL_STAT_RCRTHRES |
3613 RX_DMA_CTL_STAT_RCRTO |
3614 RX_DMA_CTL_STAT_RBR_EMPTY));
3615 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
3616 nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
3617 nw64(RBR_CFIG_A(channel),
3618 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
3619 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
3620 err = niu_compute_rbr_cfig_b(rp, &val);
3621 if (err)
3622 return err;
3623 nw64(RBR_CFIG_B(channel), val);
3624 nw64(RCRCFIG_A(channel),
3625 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
3626 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
3627 nw64(RCRCFIG_B(channel),
3628 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
3629 RCRCFIG_B_ENTOUT |
3630 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
3631
3632 err = niu_enable_rx_channel(np, channel, 1);
3633 if (err)
3634 return err;
3635
3636 nw64(RBR_KICK(channel), rp->rbr_index);
3637
3638 val = nr64(RX_DMA_CTL_STAT(channel));
3639 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
3640 nw64(RX_DMA_CTL_STAT(channel), val);
3641
3642 return 0;
3643 }
3644
3645 static int niu_init_rx_channels(struct niu *np)
3646 {
3647 unsigned long flags;
3648 u64 seed = jiffies_64;
3649 int err, i;
3650
3651 niu_lock_parent(np, flags);
3652 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
3653 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
3654 niu_unlock_parent(np, flags);
3655
3656 /* XXX RXDMA 32bit mode? XXX */
3657
3658 niu_init_rdc_groups(np);
3659 niu_init_drr_weight(np);
3660
3661 err = niu_init_hostinfo(np);
3662 if (err)
3663 return err;
3664
3665 for (i = 0; i < np->num_rx_rings; i++) {
3666 struct rx_ring_info *rp = &np->rx_rings[i];
3667
3668 err = niu_init_one_rx_channel(np, rp);
3669 if (err)
3670 return err;
3671 }
3672
3673 return 0;
3674 }
3675
3676 static int niu_set_ip_frag_rule(struct niu *np)
3677 {
3678 struct niu_parent *parent = np->parent;
3679 struct niu_classifier *cp = &np->clas;
3680 struct niu_tcam_entry *tp;
3681 int index, err;
3682
3683 /* XXX fix this allocation scheme XXX */
3684 index = cp->tcam_index;
3685 tp = &parent->tcam[index];
3686
3687 /* Note that the noport bit is the same in both ipv4 and
3688 * ipv6 format TCAM entries.
3689 */
3690 memset(tp, 0, sizeof(*tp));
3691 tp->key[1] = TCAM_V4KEY1_NOPORT;
3692 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
3693 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
3694 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
3695 err = tcam_write(np, index, tp->key, tp->key_mask);
3696 if (err)
3697 return err;
3698 err = tcam_assoc_write(np, index, tp->assoc_data);
3699 if (err)
3700 return err;
3701
3702 return 0;
3703 }
3704
3705 static int niu_init_classifier_hw(struct niu *np)
3706 {
3707 struct niu_parent *parent = np->parent;
3708 struct niu_classifier *cp = &np->clas;
3709 int i, err;
3710
3711 nw64(H1POLY, cp->h1_init);
3712 nw64(H2POLY, cp->h2_init);
3713
3714 err = niu_init_hostinfo(np);
3715 if (err)
3716 return err;
3717
3718 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
3719 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
3720
3721 vlan_tbl_write(np, i, np->port,
3722 vp->vlan_pref, vp->rdc_num);
3723 }
3724
3725 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
3726 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
3727
3728 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
3729 ap->rdc_num, ap->mac_pref);
3730 if (err)
3731 return err;
3732 }
3733
3734 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
3735 int index = i - CLASS_CODE_USER_PROG1;
3736
3737 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
3738 if (err)
3739 return err;
3740 err = niu_set_flow_key(np, i, parent->flow_key[index]);
3741 if (err)
3742 return err;
3743 }
3744
3745 err = niu_set_ip_frag_rule(np);
3746 if (err)
3747 return err;
3748
3749 tcam_enable(np, 1);
3750
3751 return 0;
3752 }
3753
3754 static int niu_zcp_write(struct niu *np, int index, u64 *data)
3755 {
3756 nw64(ZCP_RAM_DATA0, data[0]);
3757 nw64(ZCP_RAM_DATA1, data[1]);
3758 nw64(ZCP_RAM_DATA2, data[2]);
3759 nw64(ZCP_RAM_DATA3, data[3]);
3760 nw64(ZCP_RAM_DATA4, data[4]);
3761 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
3762 nw64(ZCP_RAM_ACC,
3763 (ZCP_RAM_ACC_WRITE |
3764 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3765 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3766
3767 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3768 1000, 100);
3769 }
3770
3771 static int niu_zcp_read(struct niu *np, int index, u64 *data)
3772 {
3773 int err;
3774
3775 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3776 1000, 100);
3777 if (err) {
3778 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
3779 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3780 (unsigned long long) nr64(ZCP_RAM_ACC));
3781 return err;
3782 }
3783
3784 nw64(ZCP_RAM_ACC,
3785 (ZCP_RAM_ACC_READ |
3786 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3787 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3788
3789 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3790 1000, 100);
3791 if (err) {
3792 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
3793 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3794 (unsigned long long) nr64(ZCP_RAM_ACC));
3795 return err;
3796 }
3797
3798 data[0] = nr64(ZCP_RAM_DATA0);
3799 data[1] = nr64(ZCP_RAM_DATA1);
3800 data[2] = nr64(ZCP_RAM_DATA2);
3801 data[3] = nr64(ZCP_RAM_DATA3);
3802 data[4] = nr64(ZCP_RAM_DATA4);
3803
3804 return 0;
3805 }
3806
3807 static void niu_zcp_cfifo_reset(struct niu *np)
3808 {
3809 u64 val = nr64(RESET_CFIFO);
3810
3811 val |= RESET_CFIFO_RST(np->port);
3812 nw64(RESET_CFIFO, val);
3813 udelay(10);
3814
3815 val &= ~RESET_CFIFO_RST(np->port);
3816 nw64(RESET_CFIFO, val);
3817 }
3818
3819 static int niu_init_zcp(struct niu *np)
3820 {
3821 u64 data[5], rbuf[5];
3822 int i, max, err;
3823
3824 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3825 if (np->port == 0 || np->port == 1)
3826 max = ATLAS_P0_P1_CFIFO_ENTRIES;
3827 else
3828 max = ATLAS_P2_P3_CFIFO_ENTRIES;
3829 } else
3830 max = NIU_CFIFO_ENTRIES;
3831
3832 data[0] = 0;
3833 data[1] = 0;
3834 data[2] = 0;
3835 data[3] = 0;
3836 data[4] = 0;
3837
3838 for (i = 0; i < max; i++) {
3839 err = niu_zcp_write(np, i, data);
3840 if (err)
3841 return err;
3842 err = niu_zcp_read(np, i, rbuf);
3843 if (err)
3844 return err;
3845 }
3846
3847 niu_zcp_cfifo_reset(np);
3848 nw64(CFIFO_ECC(np->port), 0);
3849 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
3850 (void) nr64(ZCP_INT_STAT);
3851 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
3852
3853 return 0;
3854 }
3855
3856 static void niu_ipp_write(struct niu *np, int index, u64 *data)
3857 {
3858 u64 val = nr64_ipp(IPP_CFIG);
3859
3860 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
3861 nw64_ipp(IPP_DFIFO_WR_PTR, index);
3862 nw64_ipp(IPP_DFIFO_WR0, data[0]);
3863 nw64_ipp(IPP_DFIFO_WR1, data[1]);
3864 nw64_ipp(IPP_DFIFO_WR2, data[2]);
3865 nw64_ipp(IPP_DFIFO_WR3, data[3]);
3866 nw64_ipp(IPP_DFIFO_WR4, data[4]);
3867 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
3868 }
3869
3870 static void niu_ipp_read(struct niu *np, int index, u64 *data)
3871 {
3872 nw64_ipp(IPP_DFIFO_RD_PTR, index);
3873 data[0] = nr64_ipp(IPP_DFIFO_RD0);
3874 data[1] = nr64_ipp(IPP_DFIFO_RD1);
3875 data[2] = nr64_ipp(IPP_DFIFO_RD2);
3876 data[3] = nr64_ipp(IPP_DFIFO_RD3);
3877 data[4] = nr64_ipp(IPP_DFIFO_RD4);
3878 }
3879
3880 static int niu_ipp_reset(struct niu *np)
3881 {
3882 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
3883 1000, 100, "IPP_CFIG");
3884 }
3885
3886 static int niu_init_ipp(struct niu *np)
3887 {
3888 u64 data[5], rbuf[5], val;
3889 int i, max, err;
3890
3891 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3892 if (np->port == 0 || np->port == 1)
3893 max = ATLAS_P0_P1_DFIFO_ENTRIES;
3894 else
3895 max = ATLAS_P2_P3_DFIFO_ENTRIES;
3896 } else
3897 max = NIU_DFIFO_ENTRIES;
3898
3899 data[0] = 0;
3900 data[1] = 0;
3901 data[2] = 0;
3902 data[3] = 0;
3903 data[4] = 0;
3904
3905 for (i = 0; i < max; i++) {
3906 niu_ipp_write(np, i, data);
3907 niu_ipp_read(np, i, rbuf);
3908 }
3909
3910 (void) nr64_ipp(IPP_INT_STAT);
3911 (void) nr64_ipp(IPP_INT_STAT);
3912
3913 err = niu_ipp_reset(np);
3914 if (err)
3915 return err;
3916
3917 (void) nr64_ipp(IPP_PKT_DIS);
3918 (void) nr64_ipp(IPP_BAD_CS_CNT);
3919 (void) nr64_ipp(IPP_ECC);
3920
3921 (void) nr64_ipp(IPP_INT_STAT);
3922
3923 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
3924
3925 val = nr64_ipp(IPP_CFIG);
3926 val &= ~IPP_CFIG_IP_MAX_PKT;
3927 val |= (IPP_CFIG_IPP_ENABLE |
3928 IPP_CFIG_DFIFO_ECC_EN |
3929 IPP_CFIG_DROP_BAD_CRC |
3930 IPP_CFIG_CKSUM_EN |
3931 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
3932 nw64_ipp(IPP_CFIG, val);
3933
3934 return 0;
3935 }
3936
3937 static void niu_init_xif_xmac(struct niu *np)
3938 {
3939 struct niu_link_config *lp = &np->link_config;
3940 u64 val;
3941
3942 val = nr64_mac(XMAC_CONFIG);
3943
3944 if ((np->flags & NIU_FLAGS_10G) != 0 &&
3945 (np->flags & NIU_FLAGS_FIBER) != 0) {
3946 if (netif_carrier_ok(np->dev)) {
3947 val |= XMAC_CONFIG_LED_POLARITY;
3948 val &= ~XMAC_CONFIG_FORCE_LED_ON;
3949 } else {
3950 val |= XMAC_CONFIG_FORCE_LED_ON;
3951 val &= ~XMAC_CONFIG_LED_POLARITY;
3952 }
3953 }
3954
3955 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3956
3957 val |= XMAC_CONFIG_TX_OUTPUT_EN;
3958
3959 if (lp->loopback_mode == LOOPBACK_MAC) {
3960 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3961 val |= XMAC_CONFIG_LOOPBACK;
3962 } else {
3963 val &= ~XMAC_CONFIG_LOOPBACK;
3964 }
3965
3966 if (np->flags & NIU_FLAGS_10G) {
3967 val &= ~XMAC_CONFIG_LFS_DISABLE;
3968 } else {
3969 val |= XMAC_CONFIG_LFS_DISABLE;
3970 if (!(np->flags & NIU_FLAGS_FIBER))
3971 val |= XMAC_CONFIG_1G_PCS_BYPASS;
3972 else
3973 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
3974 }
3975
3976 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
3977
3978 if (lp->active_speed == SPEED_100)
3979 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
3980 else
3981 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
3982
3983 nw64_mac(XMAC_CONFIG, val);
3984
3985 val = nr64_mac(XMAC_CONFIG);
3986 val &= ~XMAC_CONFIG_MODE_MASK;
3987 if (np->flags & NIU_FLAGS_10G) {
3988 val |= XMAC_CONFIG_MODE_XGMII;
3989 } else {
3990 if (lp->active_speed == SPEED_100)
3991 val |= XMAC_CONFIG_MODE_MII;
3992 else
3993 val |= XMAC_CONFIG_MODE_GMII;
3994 }
3995
3996 nw64_mac(XMAC_CONFIG, val);
3997 }
3998
3999 static void niu_init_xif_bmac(struct niu *np)
4000 {
4001 struct niu_link_config *lp = &np->link_config;
4002 u64 val;
4003
4004 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
4005
4006 if (lp->loopback_mode == LOOPBACK_MAC)
4007 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
4008 else
4009 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
4010
4011 if (lp->active_speed == SPEED_1000)
4012 val |= BMAC_XIF_CONFIG_GMII_MODE;
4013 else
4014 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
4015
4016 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
4017 BMAC_XIF_CONFIG_LED_POLARITY);
4018
4019 if (!(np->flags & NIU_FLAGS_10G) &&
4020 !(np->flags & NIU_FLAGS_FIBER) &&
4021 lp->active_speed == SPEED_100)
4022 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
4023 else
4024 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
4025
4026 nw64_mac(BMAC_XIF_CONFIG, val);
4027 }
4028
4029 static void niu_init_xif(struct niu *np)
4030 {
4031 if (np->flags & NIU_FLAGS_XMAC)
4032 niu_init_xif_xmac(np);
4033 else
4034 niu_init_xif_bmac(np);
4035 }
4036
4037 static void niu_pcs_mii_reset(struct niu *np)
4038 {
4039 u64 val = nr64_pcs(PCS_MII_CTL);
4040 val |= PCS_MII_CTL_RST;
4041 nw64_pcs(PCS_MII_CTL, val);
4042 }
4043
4044 static void niu_xpcs_reset(struct niu *np)
4045 {
4046 u64 val = nr64_xpcs(XPCS_CONTROL1);
4047 val |= XPCS_CONTROL1_RESET;
4048 nw64_xpcs(XPCS_CONTROL1, val);
4049 }
4050
4051 static int niu_init_pcs(struct niu *np)
4052 {
4053 struct niu_link_config *lp = &np->link_config;
4054 u64 val;
4055
4056 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
4057 case NIU_FLAGS_FIBER:
4058 /* 1G fiber */
4059 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
4060 nw64_pcs(PCS_DPATH_MODE, 0);
4061 niu_pcs_mii_reset(np);
4062 break;
4063
4064 case NIU_FLAGS_10G:
4065 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
4066 if (!(np->flags & NIU_FLAGS_XMAC))
4067 return -EINVAL;
4068
4069 /* 10G copper or fiber */
4070 val = nr64_mac(XMAC_CONFIG);
4071 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4072 nw64_mac(XMAC_CONFIG, val);
4073
4074 niu_xpcs_reset(np);
4075
4076 val = nr64_xpcs(XPCS_CONTROL1);
4077 if (lp->loopback_mode == LOOPBACK_PHY)
4078 val |= XPCS_CONTROL1_LOOPBACK;
4079 else
4080 val &= ~XPCS_CONTROL1_LOOPBACK;
4081 nw64_xpcs(XPCS_CONTROL1, val);
4082
4083 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
4084 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
4085 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
4086 break;
4087
4088 case 0:
4089 /* 1G copper */
4090 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
4091 niu_pcs_mii_reset(np);
4092 break;
4093
4094 default:
4095 return -EINVAL;
4096 }
4097
4098 return 0;
4099 }
4100
4101 static int niu_reset_tx_xmac(struct niu *np)
4102 {
4103 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
4104 (XTXMAC_SW_RST_REG_RS |
4105 XTXMAC_SW_RST_SOFT_RST),
4106 1000, 100, "XTXMAC_SW_RST");
4107 }
4108
4109 static int niu_reset_tx_bmac(struct niu *np)
4110 {
4111 int limit;
4112
4113 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
4114 limit = 1000;
4115 while (--limit >= 0) {
4116 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
4117 break;
4118 udelay(100);
4119 }
4120 if (limit < 0) {
4121 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
4122 "BTXMAC_SW_RST[%llx]\n",
4123 np->port,
4124 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
4125 return -ENODEV;
4126 }
4127
4128 return 0;
4129 }
4130
4131 static int niu_reset_tx_mac(struct niu *np)
4132 {
4133 if (np->flags & NIU_FLAGS_XMAC)
4134 return niu_reset_tx_xmac(np);
4135 else
4136 return niu_reset_tx_bmac(np);
4137 }
4138
4139 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
4140 {
4141 u64 val;
4142
4143 val = nr64_mac(XMAC_MIN);
4144 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
4145 XMAC_MIN_RX_MIN_PKT_SIZE);
4146 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
4147 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
4148 nw64_mac(XMAC_MIN, val);
4149
4150 nw64_mac(XMAC_MAX, max);
4151
4152 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
4153
4154 val = nr64_mac(XMAC_IPG);
4155 if (np->flags & NIU_FLAGS_10G) {
4156 val &= ~XMAC_IPG_IPG_XGMII;
4157 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
4158 } else {
4159 val &= ~XMAC_IPG_IPG_MII_GMII;
4160 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
4161 }
4162 nw64_mac(XMAC_IPG, val);
4163
4164 val = nr64_mac(XMAC_CONFIG);
4165 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
4166 XMAC_CONFIG_STRETCH_MODE |
4167 XMAC_CONFIG_VAR_MIN_IPG_EN |
4168 XMAC_CONFIG_TX_ENABLE);
4169 nw64_mac(XMAC_CONFIG, val);
4170
4171 nw64_mac(TXMAC_FRM_CNT, 0);
4172 nw64_mac(TXMAC_BYTE_CNT, 0);
4173 }
4174
4175 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
4176 {
4177 u64 val;
4178
4179 nw64_mac(BMAC_MIN_FRAME, min);
4180 nw64_mac(BMAC_MAX_FRAME, max);
4181
4182 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
4183 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
4184 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
4185
4186 val = nr64_mac(BTXMAC_CONFIG);
4187 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
4188 BTXMAC_CONFIG_ENABLE);
4189 nw64_mac(BTXMAC_CONFIG, val);
4190 }
4191
4192 static void niu_init_tx_mac(struct niu *np)
4193 {
4194 u64 min, max;
4195
4196 min = 64;
4197 if (np->dev->mtu > ETH_DATA_LEN)
4198 max = 9216;
4199 else
4200 max = 1522;
4201
4202 /* The XMAC_MIN register only accepts values for TX min which
4203 * have the low 3 bits cleared.
4204 */
4205 BUILD_BUG_ON(min & 0x7);
4206
4207 if (np->flags & NIU_FLAGS_XMAC)
4208 niu_init_tx_xmac(np, min, max);
4209 else
4210 niu_init_tx_bmac(np, min, max);
4211 }
4212
4213 static int niu_reset_rx_xmac(struct niu *np)
4214 {
4215 int limit;
4216
4217 nw64_mac(XRXMAC_SW_RST,
4218 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
4219 limit = 1000;
4220 while (--limit >= 0) {
4221 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
4222 XRXMAC_SW_RST_SOFT_RST)))
4223 break;
4224 udelay(100);
4225 }
4226 if (limit < 0) {
4227 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
4228 "XRXMAC_SW_RST[%llx]\n",
4229 np->port,
4230 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
4231 return -ENODEV;
4232 }
4233
4234 return 0;
4235 }
4236
4237 static int niu_reset_rx_bmac(struct niu *np)
4238 {
4239 int limit;
4240
4241 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
4242 limit = 1000;
4243 while (--limit >= 0) {
4244 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
4245 break;
4246 udelay(100);
4247 }
4248 if (limit < 0) {
4249 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
4250 "BRXMAC_SW_RST[%llx]\n",
4251 np->port,
4252 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
4253 return -ENODEV;
4254 }
4255
4256 return 0;
4257 }
4258
4259 static int niu_reset_rx_mac(struct niu *np)
4260 {
4261 if (np->flags & NIU_FLAGS_XMAC)
4262 return niu_reset_rx_xmac(np);
4263 else
4264 return niu_reset_rx_bmac(np);
4265 }
4266
4267 static void niu_init_rx_xmac(struct niu *np)
4268 {
4269 struct niu_parent *parent = np->parent;
4270 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4271 int first_rdc_table = tp->first_table_num;
4272 unsigned long i;
4273 u64 val;
4274
4275 nw64_mac(XMAC_ADD_FILT0, 0);
4276 nw64_mac(XMAC_ADD_FILT1, 0);
4277 nw64_mac(XMAC_ADD_FILT2, 0);
4278 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
4279 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
4280 for (i = 0; i < MAC_NUM_HASH; i++)
4281 nw64_mac(XMAC_HASH_TBL(i), 0);
4282 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
4283 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4284 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4285
4286 val = nr64_mac(XMAC_CONFIG);
4287 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
4288 XMAC_CONFIG_PROMISCUOUS |
4289 XMAC_CONFIG_PROMISC_GROUP |
4290 XMAC_CONFIG_ERR_CHK_DIS |
4291 XMAC_CONFIG_RX_CRC_CHK_DIS |
4292 XMAC_CONFIG_RESERVED_MULTICAST |
4293 XMAC_CONFIG_RX_CODEV_CHK_DIS |
4294 XMAC_CONFIG_ADDR_FILTER_EN |
4295 XMAC_CONFIG_RCV_PAUSE_ENABLE |
4296 XMAC_CONFIG_STRIP_CRC |
4297 XMAC_CONFIG_PASS_FLOW_CTRL |
4298 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
4299 val |= (XMAC_CONFIG_HASH_FILTER_EN);
4300 nw64_mac(XMAC_CONFIG, val);
4301
4302 nw64_mac(RXMAC_BT_CNT, 0);
4303 nw64_mac(RXMAC_BC_FRM_CNT, 0);
4304 nw64_mac(RXMAC_MC_FRM_CNT, 0);
4305 nw64_mac(RXMAC_FRAG_CNT, 0);
4306 nw64_mac(RXMAC_HIST_CNT1, 0);
4307 nw64_mac(RXMAC_HIST_CNT2, 0);
4308 nw64_mac(RXMAC_HIST_CNT3, 0);
4309 nw64_mac(RXMAC_HIST_CNT4, 0);
4310 nw64_mac(RXMAC_HIST_CNT5, 0);
4311 nw64_mac(RXMAC_HIST_CNT6, 0);
4312 nw64_mac(RXMAC_HIST_CNT7, 0);
4313 nw64_mac(RXMAC_MPSZER_CNT, 0);
4314 nw64_mac(RXMAC_CRC_ER_CNT, 0);
4315 nw64_mac(RXMAC_CD_VIO_CNT, 0);
4316 nw64_mac(LINK_FAULT_CNT, 0);
4317 }
4318
4319 static void niu_init_rx_bmac(struct niu *np)
4320 {
4321 struct niu_parent *parent = np->parent;
4322 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4323 int first_rdc_table = tp->first_table_num;
4324 unsigned long i;
4325 u64 val;
4326
4327 nw64_mac(BMAC_ADD_FILT0, 0);
4328 nw64_mac(BMAC_ADD_FILT1, 0);
4329 nw64_mac(BMAC_ADD_FILT2, 0);
4330 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
4331 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
4332 for (i = 0; i < MAC_NUM_HASH; i++)
4333 nw64_mac(BMAC_HASH_TBL(i), 0);
4334 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4335 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4336 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
4337
4338 val = nr64_mac(BRXMAC_CONFIG);
4339 val &= ~(BRXMAC_CONFIG_ENABLE |
4340 BRXMAC_CONFIG_STRIP_PAD |
4341 BRXMAC_CONFIG_STRIP_FCS |
4342 BRXMAC_CONFIG_PROMISC |
4343 BRXMAC_CONFIG_PROMISC_GRP |
4344 BRXMAC_CONFIG_ADDR_FILT_EN |
4345 BRXMAC_CONFIG_DISCARD_DIS);
4346 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
4347 nw64_mac(BRXMAC_CONFIG, val);
4348
4349 val = nr64_mac(BMAC_ADDR_CMPEN);
4350 val |= BMAC_ADDR_CMPEN_EN0;
4351 nw64_mac(BMAC_ADDR_CMPEN, val);
4352 }
4353
4354 static void niu_init_rx_mac(struct niu *np)
4355 {
4356 niu_set_primary_mac(np, np->dev->dev_addr);
4357
4358 if (np->flags & NIU_FLAGS_XMAC)
4359 niu_init_rx_xmac(np);
4360 else
4361 niu_init_rx_bmac(np);
4362 }
4363
4364 static void niu_enable_tx_xmac(struct niu *np, int on)
4365 {
4366 u64 val = nr64_mac(XMAC_CONFIG);
4367
4368 if (on)
4369 val |= XMAC_CONFIG_TX_ENABLE;
4370 else
4371 val &= ~XMAC_CONFIG_TX_ENABLE;
4372 nw64_mac(XMAC_CONFIG, val);
4373 }
4374
4375 static void niu_enable_tx_bmac(struct niu *np, int on)
4376 {
4377 u64 val = nr64_mac(BTXMAC_CONFIG);
4378
4379 if (on)
4380 val |= BTXMAC_CONFIG_ENABLE;
4381 else
4382 val &= ~BTXMAC_CONFIG_ENABLE;
4383 nw64_mac(BTXMAC_CONFIG, val);
4384 }
4385
4386 static void niu_enable_tx_mac(struct niu *np, int on)
4387 {
4388 if (np->flags & NIU_FLAGS_XMAC)
4389 niu_enable_tx_xmac(np, on);
4390 else
4391 niu_enable_tx_bmac(np, on);
4392 }
4393
4394 static void niu_enable_rx_xmac(struct niu *np, int on)
4395 {
4396 u64 val = nr64_mac(XMAC_CONFIG);
4397
4398 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
4399 XMAC_CONFIG_PROMISCUOUS);
4400
4401 if (np->flags & NIU_FLAGS_MCAST)
4402 val |= XMAC_CONFIG_HASH_FILTER_EN;
4403 if (np->flags & NIU_FLAGS_PROMISC)
4404 val |= XMAC_CONFIG_PROMISCUOUS;
4405
4406 if (on)
4407 val |= XMAC_CONFIG_RX_MAC_ENABLE;
4408 else
4409 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
4410 nw64_mac(XMAC_CONFIG, val);
4411 }
4412
4413 static void niu_enable_rx_bmac(struct niu *np, int on)
4414 {
4415 u64 val = nr64_mac(BRXMAC_CONFIG);
4416
4417 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
4418 BRXMAC_CONFIG_PROMISC);
4419
4420 if (np->flags & NIU_FLAGS_MCAST)
4421 val |= BRXMAC_CONFIG_HASH_FILT_EN;
4422 if (np->flags & NIU_FLAGS_PROMISC)
4423 val |= BRXMAC_CONFIG_PROMISC;
4424
4425 if (on)
4426 val |= BRXMAC_CONFIG_ENABLE;
4427 else
4428 val &= ~BRXMAC_CONFIG_ENABLE;
4429 nw64_mac(BRXMAC_CONFIG, val);
4430 }
4431
4432 static void niu_enable_rx_mac(struct niu *np, int on)
4433 {
4434 if (np->flags & NIU_FLAGS_XMAC)
4435 niu_enable_rx_xmac(np, on);
4436 else
4437 niu_enable_rx_bmac(np, on);
4438 }
4439
4440 static int niu_init_mac(struct niu *np)
4441 {
4442 int err;
4443
4444 niu_init_xif(np);
4445 err = niu_init_pcs(np);
4446 if (err)
4447 return err;
4448
4449 err = niu_reset_tx_mac(np);
4450 if (err)
4451 return err;
4452 niu_init_tx_mac(np);
4453 err = niu_reset_rx_mac(np);
4454 if (err)
4455 return err;
4456 niu_init_rx_mac(np);
4457
4458 /* This looks hookey but the RX MAC reset we just did will
4459 * undo some of the state we setup in niu_init_tx_mac() so we
4460 * have to call it again. In particular, the RX MAC reset will
4461 * set the XMAC_MAX register back to it's default value.
4462 */
4463 niu_init_tx_mac(np);
4464 niu_enable_tx_mac(np, 1);
4465
4466 niu_enable_rx_mac(np, 1);
4467
4468 return 0;
4469 }
4470
4471 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4472 {
4473 (void) niu_tx_channel_stop(np, rp->tx_channel);
4474 }
4475
4476 static void niu_stop_tx_channels(struct niu *np)
4477 {
4478 int i;
4479
4480 for (i = 0; i < np->num_tx_rings; i++) {
4481 struct tx_ring_info *rp = &np->tx_rings[i];
4482
4483 niu_stop_one_tx_channel(np, rp);
4484 }
4485 }
4486
4487 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4488 {
4489 (void) niu_tx_channel_reset(np, rp->tx_channel);
4490 }
4491
4492 static void niu_reset_tx_channels(struct niu *np)
4493 {
4494 int i;
4495
4496 for (i = 0; i < np->num_tx_rings; i++) {
4497 struct tx_ring_info *rp = &np->tx_rings[i];
4498
4499 niu_reset_one_tx_channel(np, rp);
4500 }
4501 }
4502
4503 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4504 {
4505 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
4506 }
4507
4508 static void niu_stop_rx_channels(struct niu *np)
4509 {
4510 int i;
4511
4512 for (i = 0; i < np->num_rx_rings; i++) {
4513 struct rx_ring_info *rp = &np->rx_rings[i];
4514
4515 niu_stop_one_rx_channel(np, rp);
4516 }
4517 }
4518
4519 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4520 {
4521 int channel = rp->rx_channel;
4522
4523 (void) niu_rx_channel_reset(np, channel);
4524 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
4525 nw64(RX_DMA_CTL_STAT(channel), 0);
4526 (void) niu_enable_rx_channel(np, channel, 0);
4527 }
4528
4529 static void niu_reset_rx_channels(struct niu *np)
4530 {
4531 int i;
4532
4533 for (i = 0; i < np->num_rx_rings; i++) {
4534 struct rx_ring_info *rp = &np->rx_rings[i];
4535
4536 niu_reset_one_rx_channel(np, rp);
4537 }
4538 }
4539
4540 static void niu_disable_ipp(struct niu *np)
4541 {
4542 u64 rd, wr, val;
4543 int limit;
4544
4545 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4546 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4547 limit = 100;
4548 while (--limit >= 0 && (rd != wr)) {
4549 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4550 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4551 }
4552 if (limit < 0 &&
4553 (rd != 0 && wr != 1)) {
4554 dev_err(np->device, PFX "%s: IPP would not quiesce, "
4555 "rd_ptr[%llx] wr_ptr[%llx]\n",
4556 np->dev->name,
4557 (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
4558 (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
4559 }
4560
4561 val = nr64_ipp(IPP_CFIG);
4562 val &= ~(IPP_CFIG_IPP_ENABLE |
4563 IPP_CFIG_DFIFO_ECC_EN |
4564 IPP_CFIG_DROP_BAD_CRC |
4565 IPP_CFIG_CKSUM_EN);
4566 nw64_ipp(IPP_CFIG, val);
4567
4568 (void) niu_ipp_reset(np);
4569 }
4570
4571 static int niu_init_hw(struct niu *np)
4572 {
4573 int i, err;
4574
4575 niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
4576 niu_txc_enable_port(np, 1);
4577 niu_txc_port_dma_enable(np, 1);
4578 niu_txc_set_imask(np, 0);
4579
4580 niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
4581 for (i = 0; i < np->num_tx_rings; i++) {
4582 struct tx_ring_info *rp = &np->tx_rings[i];
4583
4584 err = niu_init_one_tx_channel(np, rp);
4585 if (err)
4586 return err;
4587 }
4588
4589 niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
4590 err = niu_init_rx_channels(np);
4591 if (err)
4592 goto out_uninit_tx_channels;
4593
4594 niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
4595 err = niu_init_classifier_hw(np);
4596 if (err)
4597 goto out_uninit_rx_channels;
4598
4599 niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
4600 err = niu_init_zcp(np);
4601 if (err)
4602 goto out_uninit_rx_channels;
4603
4604 niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
4605 err = niu_init_ipp(np);
4606 if (err)
4607 goto out_uninit_rx_channels;
4608
4609 niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
4610 err = niu_init_mac(np);
4611 if (err)
4612 goto out_uninit_ipp;
4613
4614 return 0;
4615
4616 out_uninit_ipp:
4617 niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
4618 niu_disable_ipp(np);
4619
4620 out_uninit_rx_channels:
4621 niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
4622 niu_stop_rx_channels(np);
4623 niu_reset_rx_channels(np);
4624
4625 out_uninit_tx_channels:
4626 niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
4627 niu_stop_tx_channels(np);
4628 niu_reset_tx_channels(np);
4629
4630 return err;
4631 }
4632
4633 static void niu_stop_hw(struct niu *np)
4634 {
4635 niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
4636 niu_enable_interrupts(np, 0);
4637
4638 niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
4639 niu_enable_rx_mac(np, 0);
4640
4641 niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
4642 niu_disable_ipp(np);
4643
4644 niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
4645 niu_stop_tx_channels(np);
4646
4647 niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
4648 niu_stop_rx_channels(np);
4649
4650 niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
4651 niu_reset_tx_channels(np);
4652
4653 niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
4654 niu_reset_rx_channels(np);
4655 }
4656
4657 static int niu_request_irq(struct niu *np)
4658 {
4659 int i, j, err;
4660
4661 err = 0;
4662 for (i = 0; i < np->num_ldg; i++) {
4663 struct niu_ldg *lp = &np->ldg[i];
4664
4665 err = request_irq(lp->irq, niu_interrupt,
4666 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
4667 np->dev->name, lp);
4668 if (err)
4669 goto out_free_irqs;
4670
4671 }
4672
4673 return 0;
4674
4675 out_free_irqs:
4676 for (j = 0; j < i; j++) {
4677 struct niu_ldg *lp = &np->ldg[j];
4678
4679 free_irq(lp->irq, lp);
4680 }
4681 return err;
4682 }
4683
4684 static void niu_free_irq(struct niu *np)
4685 {
4686 int i;
4687
4688 for (i = 0; i < np->num_ldg; i++) {
4689 struct niu_ldg *lp = &np->ldg[i];
4690
4691 free_irq(lp->irq, lp);
4692 }
4693 }
4694
4695 static void niu_enable_napi(struct niu *np)
4696 {
4697 int i;
4698
4699 for (i = 0; i < np->num_ldg; i++)
4700 napi_enable(&np->ldg[i].napi);
4701 }
4702
4703 static void niu_disable_napi(struct niu *np)
4704 {
4705 int i;
4706
4707 for (i = 0; i < np->num_ldg; i++)
4708 napi_disable(&np->ldg[i].napi);
4709 }
4710
4711 static int niu_open(struct net_device *dev)
4712 {
4713 struct niu *np = netdev_priv(dev);
4714 int err;
4715
4716 netif_carrier_off(dev);
4717
4718 err = niu_alloc_channels(np);
4719 if (err)
4720 goto out_err;
4721
4722 err = niu_enable_interrupts(np, 0);
4723 if (err)
4724 goto out_free_channels;
4725
4726 err = niu_request_irq(np);
4727 if (err)
4728 goto out_free_channels;
4729
4730 niu_enable_napi(np);
4731
4732 spin_lock_irq(&np->lock);
4733
4734 err = niu_init_hw(np);
4735 if (!err) {
4736 init_timer(&np->timer);
4737 np->timer.expires = jiffies + HZ;
4738 np->timer.data = (unsigned long) np;
4739 np->timer.function = niu_timer;
4740
4741 err = niu_enable_interrupts(np, 1);
4742 if (err)
4743 niu_stop_hw(np);
4744 }
4745
4746 spin_unlock_irq(&np->lock);
4747
4748 if (err) {
4749 niu_disable_napi(np);
4750 goto out_free_irq;
4751 }
4752
4753 netif_start_queue(dev);
4754
4755 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
4756 netif_carrier_on(dev);
4757
4758 add_timer(&np->timer);
4759
4760 return 0;
4761
4762 out_free_irq:
4763 niu_free_irq(np);
4764
4765 out_free_channels:
4766 niu_free_channels(np);
4767
4768 out_err:
4769 return err;
4770 }
4771
4772 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
4773 {
4774 cancel_work_sync(&np->reset_task);
4775
4776 niu_disable_napi(np);
4777 netif_stop_queue(dev);
4778
4779 del_timer_sync(&np->timer);
4780
4781 spin_lock_irq(&np->lock);
4782
4783 niu_stop_hw(np);
4784
4785 spin_unlock_irq(&np->lock);
4786 }
4787
4788 static int niu_close(struct net_device *dev)
4789 {
4790 struct niu *np = netdev_priv(dev);
4791
4792 niu_full_shutdown(np, dev);
4793
4794 niu_free_irq(np);
4795
4796 niu_free_channels(np);
4797
4798 return 0;
4799 }
4800
4801 static void niu_sync_xmac_stats(struct niu *np)
4802 {
4803 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
4804
4805 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
4806 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
4807
4808 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
4809 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
4810 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
4811 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
4812 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
4813 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
4814 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
4815 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
4816 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
4817 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
4818 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
4819 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
4820 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
4821 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
4822 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
4823 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
4824 }
4825
4826 static void niu_sync_bmac_stats(struct niu *np)
4827 {
4828 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4829
4830 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
4831 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
4832
4833 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
4834 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4835 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4836 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
4837 }
4838
4839 static void niu_sync_mac_stats(struct niu *np)
4840 {
4841 if (np->flags & NIU_FLAGS_XMAC)
4842 niu_sync_xmac_stats(np);
4843 else
4844 niu_sync_bmac_stats(np);
4845 }
4846
4847 static void niu_get_rx_stats(struct niu *np)
4848 {
4849 unsigned long pkts, dropped, errors, bytes;
4850 int i;
4851
4852 pkts = dropped = errors = bytes = 0;
4853 for (i = 0; i < np->num_rx_rings; i++) {
4854 struct rx_ring_info *rp = &np->rx_rings[i];
4855
4856 pkts += rp->rx_packets;
4857 bytes += rp->rx_bytes;
4858 dropped += rp->rx_dropped;
4859 errors += rp->rx_errors;
4860 }
4861 np->net_stats.rx_packets = pkts;
4862 np->net_stats.rx_bytes = bytes;
4863 np->net_stats.rx_dropped = dropped;
4864 np->net_stats.rx_errors = errors;
4865 }
4866
4867 static void niu_get_tx_stats(struct niu *np)
4868 {
4869 unsigned long pkts, errors, bytes;
4870 int i;
4871
4872 pkts = errors = bytes = 0;
4873 for (i = 0; i < np->num_tx_rings; i++) {
4874 struct tx_ring_info *rp = &np->tx_rings[i];
4875
4876 pkts += rp->tx_packets;
4877 bytes += rp->tx_bytes;
4878 errors += rp->tx_errors;
4879 }
4880 np->net_stats.tx_packets = pkts;
4881 np->net_stats.tx_bytes = bytes;
4882 np->net_stats.tx_errors = errors;
4883 }
4884
4885 static struct net_device_stats *niu_get_stats(struct net_device *dev)
4886 {
4887 struct niu *np = netdev_priv(dev);
4888
4889 niu_get_rx_stats(np);
4890 niu_get_tx_stats(np);
4891
4892 return &np->net_stats;
4893 }
4894
4895 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
4896 {
4897 int i;
4898
4899 for (i = 0; i < 16; i++)
4900 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
4901 }
4902
4903 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
4904 {
4905 int i;
4906
4907 for (i = 0; i < 16; i++)
4908 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
4909 }
4910
4911 static void niu_load_hash(struct niu *np, u16 *hash)
4912 {
4913 if (np->flags & NIU_FLAGS_XMAC)
4914 niu_load_hash_xmac(np, hash);
4915 else
4916 niu_load_hash_bmac(np, hash);
4917 }
4918
4919 static void niu_set_rx_mode(struct net_device *dev)
4920 {
4921 struct niu *np = netdev_priv(dev);
4922 int i, alt_cnt, err;
4923 struct dev_addr_list *addr;
4924 unsigned long flags;
4925 u16 hash[16] = { 0, };
4926
4927 spin_lock_irqsave(&np->lock, flags);
4928 niu_enable_rx_mac(np, 0);
4929
4930 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
4931 if (dev->flags & IFF_PROMISC)
4932 np->flags |= NIU_FLAGS_PROMISC;
4933 if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
4934 np->flags |= NIU_FLAGS_MCAST;
4935
4936 alt_cnt = dev->uc_count;
4937 if (alt_cnt > niu_num_alt_addr(np)) {
4938 alt_cnt = 0;
4939 np->flags |= NIU_FLAGS_PROMISC;
4940 }
4941
4942 if (alt_cnt) {
4943 int index = 0;
4944
4945 for (addr = dev->uc_list; addr; addr = addr->next) {
4946 err = niu_set_alt_mac(np, index,
4947 addr->da_addr);
4948 if (err)
4949 printk(KERN_WARNING PFX "%s: Error %d "
4950 "adding alt mac %d\n",
4951 dev->name, err, index);
4952 err = niu_enable_alt_mac(np, index, 1);
4953 if (err)
4954 printk(KERN_WARNING PFX "%s: Error %d "
4955 "enabling alt mac %d\n",
4956 dev->name, err, index);
4957
4958 index++;
4959 }
4960 } else {
4961 for (i = 0; i < niu_num_alt_addr(np); i++) {
4962 err = niu_enable_alt_mac(np, i, 0);
4963 if (err)
4964 printk(KERN_WARNING PFX "%s: Error %d "
4965 "disabling alt mac %d\n",
4966 dev->name, err, i);
4967 }
4968 }
4969 if (dev->flags & IFF_ALLMULTI) {
4970 for (i = 0; i < 16; i++)
4971 hash[i] = 0xffff;
4972 } else if (dev->mc_count > 0) {
4973 for (addr = dev->mc_list; addr; addr = addr->next) {
4974 u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
4975
4976 crc >>= 24;
4977 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
4978 }
4979 }
4980
4981 if (np->flags & NIU_FLAGS_MCAST)
4982 niu_load_hash(np, hash);
4983
4984 niu_enable_rx_mac(np, 1);
4985 spin_unlock_irqrestore(&np->lock, flags);
4986 }
4987
4988 static int niu_set_mac_addr(struct net_device *dev, void *p)
4989 {
4990 struct niu *np = netdev_priv(dev);
4991 struct sockaddr *addr = p;
4992 unsigned long flags;
4993
4994 if (!is_valid_ether_addr(addr->sa_data))
4995 return -EINVAL;
4996
4997 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
4998
4999 if (!netif_running(dev))
5000 return 0;
5001
5002 spin_lock_irqsave(&np->lock, flags);
5003 niu_enable_rx_mac(np, 0);
5004 niu_set_primary_mac(np, dev->dev_addr);
5005 niu_enable_rx_mac(np, 1);
5006 spin_unlock_irqrestore(&np->lock, flags);
5007
5008 return 0;
5009 }
5010
5011 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
5012 {
5013 return -EOPNOTSUPP;
5014 }
5015
5016 static void niu_netif_stop(struct niu *np)
5017 {
5018 np->dev->trans_start = jiffies; /* prevent tx timeout */
5019
5020 niu_disable_napi(np);
5021
5022 netif_tx_disable(np->dev);
5023 }
5024
5025 static void niu_netif_start(struct niu *np)
5026 {
5027 /* NOTE: unconditional netif_wake_queue is only appropriate
5028 * so long as all callers are assured to have free tx slots
5029 * (such as after niu_init_hw).
5030 */
5031 netif_wake_queue(np->dev);
5032
5033 niu_enable_napi(np);
5034
5035 niu_enable_interrupts(np, 1);
5036 }
5037
5038 static void niu_reset_task(struct work_struct *work)
5039 {
5040 struct niu *np = container_of(work, struct niu, reset_task);
5041 unsigned long flags;
5042 int err;
5043
5044 spin_lock_irqsave(&np->lock, flags);
5045 if (!netif_running(np->dev)) {
5046 spin_unlock_irqrestore(&np->lock, flags);
5047 return;
5048 }
5049
5050 spin_unlock_irqrestore(&np->lock, flags);
5051
5052 del_timer_sync(&np->timer);
5053
5054 niu_netif_stop(np);
5055
5056 spin_lock_irqsave(&np->lock, flags);
5057
5058 niu_stop_hw(np);
5059
5060 err = niu_init_hw(np);
5061 if (!err) {
5062 np->timer.expires = jiffies + HZ;
5063 add_timer(&np->timer);
5064 niu_netif_start(np);
5065 }
5066
5067 spin_unlock_irqrestore(&np->lock, flags);
5068 }
5069
5070 static void niu_tx_timeout(struct net_device *dev)
5071 {
5072 struct niu *np = netdev_priv(dev);
5073
5074 dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
5075 dev->name);
5076
5077 schedule_work(&np->reset_task);
5078 }
5079
5080 static void niu_set_txd(struct tx_ring_info *rp, int index,
5081 u64 mapping, u64 len, u64 mark,
5082 u64 n_frags)
5083 {
5084 __le64 *desc = &rp->descr[index];
5085
5086 *desc = cpu_to_le64(mark |
5087 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
5088 (len << TX_DESC_TR_LEN_SHIFT) |
5089 (mapping & TX_DESC_SAD));
5090 }
5091
5092 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
5093 u64 pad_bytes, u64 len)
5094 {
5095 u16 eth_proto, eth_proto_inner;
5096 u64 csum_bits, l3off, ihl, ret;
5097 u8 ip_proto;
5098 int ipv6;
5099
5100 eth_proto = be16_to_cpu(ehdr->h_proto);
5101 eth_proto_inner = eth_proto;
5102 if (eth_proto == ETH_P_8021Q) {
5103 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
5104 __be16 val = vp->h_vlan_encapsulated_proto;
5105
5106 eth_proto_inner = be16_to_cpu(val);
5107 }
5108
5109 ipv6 = ihl = 0;
5110 switch (skb->protocol) {
5111 case __constant_htons(ETH_P_IP):
5112 ip_proto = ip_hdr(skb)->protocol;
5113 ihl = ip_hdr(skb)->ihl;
5114 break;
5115 case __constant_htons(ETH_P_IPV6):
5116 ip_proto = ipv6_hdr(skb)->nexthdr;
5117 ihl = (40 >> 2);
5118 ipv6 = 1;
5119 break;
5120 default:
5121 ip_proto = ihl = 0;
5122 break;
5123 }
5124
5125 csum_bits = TXHDR_CSUM_NONE;
5126 if (skb->ip_summed == CHECKSUM_PARTIAL) {
5127 u64 start, stuff;
5128
5129 csum_bits = (ip_proto == IPPROTO_TCP ?
5130 TXHDR_CSUM_TCP :
5131 (ip_proto == IPPROTO_UDP ?
5132 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
5133
5134 start = skb_transport_offset(skb) -
5135 (pad_bytes + sizeof(struct tx_pkt_hdr));
5136 stuff = start + skb->csum_offset;
5137
5138 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
5139 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
5140 }
5141
5142 l3off = skb_network_offset(skb) -
5143 (pad_bytes + sizeof(struct tx_pkt_hdr));
5144
5145 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
5146 (len << TXHDR_LEN_SHIFT) |
5147 ((l3off / 2) << TXHDR_L3START_SHIFT) |
5148 (ihl << TXHDR_IHL_SHIFT) |
5149 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
5150 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
5151 (ipv6 ? TXHDR_IP_VER : 0) |
5152 csum_bits);
5153
5154 return ret;
5155 }
5156
5157 static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
5158 {
5159 return &np->tx_rings[0];
5160 }
5161
5162 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
5163 {
5164 struct niu *np = netdev_priv(dev);
5165 unsigned long align, headroom;
5166 struct tx_ring_info *rp;
5167 struct tx_pkt_hdr *tp;
5168 unsigned int len, nfg;
5169 struct ethhdr *ehdr;
5170 int prod, i, tlen;
5171 u64 mapping, mrk;
5172
5173 rp = tx_ring_select(np, skb);
5174
5175 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
5176 netif_stop_queue(dev);
5177 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
5178 "queue awake!\n", dev->name);
5179 rp->tx_errors++;
5180 return NETDEV_TX_BUSY;
5181 }
5182
5183 if (skb->len < ETH_ZLEN) {
5184 unsigned int pad_bytes = ETH_ZLEN - skb->len;
5185
5186 if (skb_pad(skb, pad_bytes))
5187 goto out;
5188 skb_put(skb, pad_bytes);
5189 }
5190
5191 len = sizeof(struct tx_pkt_hdr) + 15;
5192 if (skb_headroom(skb) < len) {
5193 struct sk_buff *skb_new;
5194
5195 skb_new = skb_realloc_headroom(skb, len);
5196 if (!skb_new) {
5197 rp->tx_errors++;
5198 goto out_drop;
5199 }
5200 kfree_skb(skb);
5201 skb = skb_new;
5202 }
5203
5204 align = ((unsigned long) skb->data & (16 - 1));
5205 headroom = align + sizeof(struct tx_pkt_hdr);
5206
5207 ehdr = (struct ethhdr *) skb->data;
5208 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
5209
5210 len = skb->len - sizeof(struct tx_pkt_hdr);
5211 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
5212 tp->resv = 0;
5213
5214 len = skb_headlen(skb);
5215 mapping = np->ops->map_single(np->device, skb->data,
5216 len, DMA_TO_DEVICE);
5217
5218 prod = rp->prod;
5219
5220 rp->tx_buffs[prod].skb = skb;
5221 rp->tx_buffs[prod].mapping = mapping;
5222
5223 mrk = TX_DESC_SOP;
5224 if (++rp->mark_counter == rp->mark_freq) {
5225 rp->mark_counter = 0;
5226 mrk |= TX_DESC_MARK;
5227 rp->mark_pending++;
5228 }
5229
5230 tlen = len;
5231 nfg = skb_shinfo(skb)->nr_frags;
5232 while (tlen > 0) {
5233 tlen -= MAX_TX_DESC_LEN;
5234 nfg++;
5235 }
5236
5237 while (len > 0) {
5238 unsigned int this_len = len;
5239
5240 if (this_len > MAX_TX_DESC_LEN)
5241 this_len = MAX_TX_DESC_LEN;
5242
5243 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
5244 mrk = nfg = 0;
5245
5246 prod = NEXT_TX(rp, prod);
5247 mapping += this_len;
5248 len -= this_len;
5249 }
5250
5251 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
5252 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
5253
5254 len = frag->size;
5255 mapping = np->ops->map_page(np->device, frag->page,
5256 frag->page_offset, len,
5257 DMA_TO_DEVICE);
5258
5259 rp->tx_buffs[prod].skb = NULL;
5260 rp->tx_buffs[prod].mapping = mapping;
5261
5262 niu_set_txd(rp, prod, mapping, len, 0, 0);
5263
5264 prod = NEXT_TX(rp, prod);
5265 }
5266
5267 if (prod < rp->prod)
5268 rp->wrap_bit ^= TX_RING_KICK_WRAP;
5269 rp->prod = prod;
5270
5271 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
5272
5273 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
5274 netif_stop_queue(dev);
5275 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
5276 netif_wake_queue(dev);
5277 }
5278
5279 dev->trans_start = jiffies;
5280
5281 out:
5282 return NETDEV_TX_OK;
5283
5284 out_drop:
5285 rp->tx_errors++;
5286 kfree_skb(skb);
5287 goto out;
5288 }
5289
5290 static int niu_change_mtu(struct net_device *dev, int new_mtu)
5291 {
5292 struct niu *np = netdev_priv(dev);
5293 int err, orig_jumbo, new_jumbo;
5294
5295 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
5296 return -EINVAL;
5297
5298 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
5299 new_jumbo = (new_mtu > ETH_DATA_LEN);
5300
5301 dev->mtu = new_mtu;
5302
5303 if (!netif_running(dev) ||
5304 (orig_jumbo == new_jumbo))
5305 return 0;
5306
5307 niu_full_shutdown(np, dev);
5308
5309 niu_free_channels(np);
5310
5311 niu_enable_napi(np);
5312
5313 err = niu_alloc_channels(np);
5314 if (err)
5315 return err;
5316
5317 spin_lock_irq(&np->lock);
5318
5319 err = niu_init_hw(np);
5320 if (!err) {
5321 init_timer(&np->timer);
5322 np->timer.expires = jiffies + HZ;
5323 np->timer.data = (unsigned long) np;
5324 np->timer.function = niu_timer;
5325
5326 err = niu_enable_interrupts(np, 1);
5327 if (err)
5328 niu_stop_hw(np);
5329 }
5330
5331 spin_unlock_irq(&np->lock);
5332
5333 if (!err) {
5334 netif_start_queue(dev);
5335 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
5336 netif_carrier_on(dev);
5337
5338 add_timer(&np->timer);
5339 }
5340
5341 return err;
5342 }
5343
5344 static void niu_get_drvinfo(struct net_device *dev,
5345 struct ethtool_drvinfo *info)
5346 {
5347 struct niu *np = netdev_priv(dev);
5348 struct niu_vpd *vpd = &np->vpd;
5349
5350 strcpy(info->driver, DRV_MODULE_NAME);
5351 strcpy(info->version, DRV_MODULE_VERSION);
5352 sprintf(info->fw_version, "%d.%d",
5353 vpd->fcode_major, vpd->fcode_minor);
5354 if (np->parent->plat_type != PLAT_TYPE_NIU)
5355 strcpy(info->bus_info, pci_name(np->pdev));
5356 }
5357
5358 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5359 {
5360 struct niu *np = netdev_priv(dev);
5361 struct niu_link_config *lp;
5362
5363 lp = &np->link_config;
5364
5365 memset(cmd, 0, sizeof(*cmd));
5366 cmd->phy_address = np->phy_addr;
5367 cmd->supported = lp->supported;
5368 cmd->advertising = lp->advertising;
5369 cmd->autoneg = lp->autoneg;
5370 cmd->speed = lp->active_speed;
5371 cmd->duplex = lp->active_duplex;
5372
5373 return 0;
5374 }
5375
5376 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5377 {
5378 return -EINVAL;
5379 }
5380
5381 static u32 niu_get_msglevel(struct net_device *dev)
5382 {
5383 struct niu *np = netdev_priv(dev);
5384 return np->msg_enable;
5385 }
5386
5387 static void niu_set_msglevel(struct net_device *dev, u32 value)
5388 {
5389 struct niu *np = netdev_priv(dev);
5390 np->msg_enable = value;
5391 }
5392
5393 static int niu_get_eeprom_len(struct net_device *dev)
5394 {
5395 struct niu *np = netdev_priv(dev);
5396
5397 return np->eeprom_len;
5398 }
5399
5400 static int niu_get_eeprom(struct net_device *dev,
5401 struct ethtool_eeprom *eeprom, u8 *data)
5402 {
5403 struct niu *np = netdev_priv(dev);
5404 u32 offset, len, val;
5405
5406 offset = eeprom->offset;
5407 len = eeprom->len;
5408
5409 if (offset + len < offset)
5410 return -EINVAL;
5411 if (offset >= np->eeprom_len)
5412 return -EINVAL;
5413 if (offset + len > np->eeprom_len)
5414 len = eeprom->len = np->eeprom_len - offset;
5415
5416 if (offset & 3) {
5417 u32 b_offset, b_count;
5418
5419 b_offset = offset & 3;
5420 b_count = 4 - b_offset;
5421 if (b_count > len)
5422 b_count = len;
5423
5424 val = nr64(ESPC_NCR((offset - b_offset) / 4));
5425 memcpy(data, ((char *)&val) + b_offset, b_count);
5426 data += b_count;
5427 len -= b_count;
5428 offset += b_count;
5429 }
5430 while (len >= 4) {
5431 val = nr64(ESPC_NCR(offset / 4));
5432 memcpy(data, &val, 4);
5433 data += 4;
5434 len -= 4;
5435 offset += 4;
5436 }
5437 if (len) {
5438 val = nr64(ESPC_NCR(offset / 4));
5439 memcpy(data, &val, len);
5440 }
5441 return 0;
5442 }
5443
5444 static const struct {
5445 const char string[ETH_GSTRING_LEN];
5446 } niu_xmac_stat_keys[] = {
5447 { "tx_frames" },
5448 { "tx_bytes" },
5449 { "tx_fifo_errors" },
5450 { "tx_overflow_errors" },
5451 { "tx_max_pkt_size_errors" },
5452 { "tx_underflow_errors" },
5453 { "rx_local_faults" },
5454 { "rx_remote_faults" },
5455 { "rx_link_faults" },
5456 { "rx_align_errors" },
5457 { "rx_frags" },
5458 { "rx_mcasts" },
5459 { "rx_bcasts" },
5460 { "rx_hist_cnt1" },
5461 { "rx_hist_cnt2" },
5462 { "rx_hist_cnt3" },
5463 { "rx_hist_cnt4" },
5464 { "rx_hist_cnt5" },
5465 { "rx_hist_cnt6" },
5466 { "rx_hist_cnt7" },
5467 { "rx_octets" },
5468 { "rx_code_violations" },
5469 { "rx_len_errors" },
5470 { "rx_crc_errors" },
5471 { "rx_underflows" },
5472 { "rx_overflows" },
5473 { "pause_off_state" },
5474 { "pause_on_state" },
5475 { "pause_received" },
5476 };
5477
5478 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
5479
5480 static const struct {
5481 const char string[ETH_GSTRING_LEN];
5482 } niu_bmac_stat_keys[] = {
5483 { "tx_underflow_errors" },
5484 { "tx_max_pkt_size_errors" },
5485 { "tx_bytes" },
5486 { "tx_frames" },
5487 { "rx_overflows" },
5488 { "rx_frames" },
5489 { "rx_align_errors" },
5490 { "rx_crc_errors" },
5491 { "rx_len_errors" },
5492 { "pause_off_state" },
5493 { "pause_on_state" },
5494 { "pause_received" },
5495 };
5496
5497 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
5498
5499 static const struct {
5500 const char string[ETH_GSTRING_LEN];
5501 } niu_rxchan_stat_keys[] = {
5502 { "rx_channel" },
5503 { "rx_packets" },
5504 { "rx_bytes" },
5505 { "rx_dropped" },
5506 { "rx_errors" },
5507 };
5508
5509 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
5510
5511 static const struct {
5512 const char string[ETH_GSTRING_LEN];
5513 } niu_txchan_stat_keys[] = {
5514 { "tx_channel" },
5515 { "tx_packets" },
5516 { "tx_bytes" },
5517 { "tx_errors" },
5518 };
5519
5520 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
5521
5522 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5523 {
5524 struct niu *np = netdev_priv(dev);
5525 int i;
5526
5527 if (stringset != ETH_SS_STATS)
5528 return;
5529
5530 if (np->flags & NIU_FLAGS_XMAC) {
5531 memcpy(data, niu_xmac_stat_keys,
5532 sizeof(niu_xmac_stat_keys));
5533 data += sizeof(niu_xmac_stat_keys);
5534 } else {
5535 memcpy(data, niu_bmac_stat_keys,
5536 sizeof(niu_bmac_stat_keys));
5537 data += sizeof(niu_bmac_stat_keys);
5538 }
5539 for (i = 0; i < np->num_rx_rings; i++) {
5540 memcpy(data, niu_rxchan_stat_keys,
5541 sizeof(niu_rxchan_stat_keys));
5542 data += sizeof(niu_rxchan_stat_keys);
5543 }
5544 for (i = 0; i < np->num_tx_rings; i++) {
5545 memcpy(data, niu_txchan_stat_keys,
5546 sizeof(niu_txchan_stat_keys));
5547 data += sizeof(niu_txchan_stat_keys);
5548 }
5549 }
5550
5551 static int niu_get_stats_count(struct net_device *dev)
5552 {
5553 struct niu *np = netdev_priv(dev);
5554
5555 return ((np->flags & NIU_FLAGS_XMAC ?
5556 NUM_XMAC_STAT_KEYS :
5557 NUM_BMAC_STAT_KEYS) +
5558 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
5559 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
5560 }
5561
5562 static void niu_get_ethtool_stats(struct net_device *dev,
5563 struct ethtool_stats *stats, u64 *data)
5564 {
5565 struct niu *np = netdev_priv(dev);
5566 int i;
5567
5568 niu_sync_mac_stats(np);
5569 if (np->flags & NIU_FLAGS_XMAC) {
5570 memcpy(data, &np->mac_stats.xmac,
5571 sizeof(struct niu_xmac_stats));
5572 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
5573 } else {
5574 memcpy(data, &np->mac_stats.bmac,
5575 sizeof(struct niu_bmac_stats));
5576 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
5577 }
5578 for (i = 0; i < np->num_rx_rings; i++) {
5579 struct rx_ring_info *rp = &np->rx_rings[i];
5580
5581 data[0] = rp->rx_channel;
5582 data[1] = rp->rx_packets;
5583 data[2] = rp->rx_bytes;
5584 data[3] = rp->rx_dropped;
5585 data[4] = rp->rx_errors;
5586 data += 5;
5587 }
5588 for (i = 0; i < np->num_tx_rings; i++) {
5589 struct tx_ring_info *rp = &np->tx_rings[i];
5590
5591 data[0] = rp->tx_channel;
5592 data[1] = rp->tx_packets;
5593 data[2] = rp->tx_bytes;
5594 data[3] = rp->tx_errors;
5595 data += 4;
5596 }
5597 }
5598
5599 static u64 niu_led_state_save(struct niu *np)
5600 {
5601 if (np->flags & NIU_FLAGS_XMAC)
5602 return nr64_mac(XMAC_CONFIG);
5603 else
5604 return nr64_mac(BMAC_XIF_CONFIG);
5605 }
5606
5607 static void niu_led_state_restore(struct niu *np, u64 val)
5608 {
5609 if (np->flags & NIU_FLAGS_XMAC)
5610 nw64_mac(XMAC_CONFIG, val);
5611 else
5612 nw64_mac(BMAC_XIF_CONFIG, val);
5613 }
5614
5615 static void niu_force_led(struct niu *np, int on)
5616 {
5617 u64 val, reg, bit;
5618
5619 if (np->flags & NIU_FLAGS_XMAC) {
5620 reg = XMAC_CONFIG;
5621 bit = XMAC_CONFIG_FORCE_LED_ON;
5622 } else {
5623 reg = BMAC_XIF_CONFIG;
5624 bit = BMAC_XIF_CONFIG_LINK_LED;
5625 }
5626
5627 val = nr64_mac(reg);
5628 if (on)
5629 val |= bit;
5630 else
5631 val &= ~bit;
5632 nw64_mac(reg, val);
5633 }
5634
5635 static int niu_phys_id(struct net_device *dev, u32 data)
5636 {
5637 struct niu *np = netdev_priv(dev);
5638 u64 orig_led_state;
5639 int i;
5640
5641 if (!netif_running(dev))
5642 return -EAGAIN;
5643
5644 if (data == 0)
5645 data = 2;
5646
5647 orig_led_state = niu_led_state_save(np);
5648 for (i = 0; i < (data * 2); i++) {
5649 int on = ((i % 2) == 0);
5650
5651 niu_force_led(np, on);
5652
5653 if (msleep_interruptible(500))
5654 break;
5655 }
5656 niu_led_state_restore(np, orig_led_state);
5657
5658 return 0;
5659 }
5660
5661 static const struct ethtool_ops niu_ethtool_ops = {
5662 .get_drvinfo = niu_get_drvinfo,
5663 .get_link = ethtool_op_get_link,
5664 .get_msglevel = niu_get_msglevel,
5665 .set_msglevel = niu_set_msglevel,
5666 .get_eeprom_len = niu_get_eeprom_len,
5667 .get_eeprom = niu_get_eeprom,
5668 .get_settings = niu_get_settings,
5669 .set_settings = niu_set_settings,
5670 .get_strings = niu_get_strings,
5671 .get_stats_count = niu_get_stats_count,
5672 .get_ethtool_stats = niu_get_ethtool_stats,
5673 .phys_id = niu_phys_id,
5674 };
5675
5676 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
5677 int ldg, int ldn)
5678 {
5679 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
5680 return -EINVAL;
5681 if (ldn < 0 || ldn > LDN_MAX)
5682 return -EINVAL;
5683
5684 parent->ldg_map[ldn] = ldg;
5685
5686 if (np->parent->plat_type == PLAT_TYPE_NIU) {
5687 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
5688 * the firmware, and we're not supposed to change them.
5689 * Validate the mapping, because if it's wrong we probably
5690 * won't get any interrupts and that's painful to debug.
5691 */
5692 if (nr64(LDG_NUM(ldn)) != ldg) {
5693 dev_err(np->device, PFX "Port %u, mis-matched "
5694 "LDG assignment "
5695 "for ldn %d, should be %d is %llu\n",
5696 np->port, ldn, ldg,
5697 (unsigned long long) nr64(LDG_NUM(ldn)));
5698 return -EINVAL;
5699 }
5700 } else
5701 nw64(LDG_NUM(ldn), ldg);
5702
5703 return 0;
5704 }
5705
5706 static int niu_set_ldg_timer_res(struct niu *np, int res)
5707 {
5708 if (res < 0 || res > LDG_TIMER_RES_VAL)
5709 return -EINVAL;
5710
5711
5712 nw64(LDG_TIMER_RES, res);
5713
5714 return 0;
5715 }
5716
5717 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
5718 {
5719 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
5720 (func < 0 || func > 3) ||
5721 (vector < 0 || vector > 0x1f))
5722 return -EINVAL;
5723
5724 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
5725
5726 return 0;
5727 }
5728
5729 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
5730 {
5731 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
5732 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
5733 int limit;
5734
5735 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
5736 return -EINVAL;
5737
5738 frame = frame_base;
5739 nw64(ESPC_PIO_STAT, frame);
5740 limit = 64;
5741 do {
5742 udelay(5);
5743 frame = nr64(ESPC_PIO_STAT);
5744 if (frame & ESPC_PIO_STAT_READ_END)
5745 break;
5746 } while (limit--);
5747 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5748 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5749 (unsigned long long) frame);
5750 return -ENODEV;
5751 }
5752
5753 frame = frame_base;
5754 nw64(ESPC_PIO_STAT, frame);
5755 limit = 64;
5756 do {
5757 udelay(5);
5758 frame = nr64(ESPC_PIO_STAT);
5759 if (frame & ESPC_PIO_STAT_READ_END)
5760 break;
5761 } while (limit--);
5762 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5763 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5764 (unsigned long long) frame);
5765 return -ENODEV;
5766 }
5767
5768 frame = nr64(ESPC_PIO_STAT);
5769 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
5770 }
5771
5772 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
5773 {
5774 int err = niu_pci_eeprom_read(np, off);
5775 u16 val;
5776
5777 if (err < 0)
5778 return err;
5779 val = (err << 8);
5780 err = niu_pci_eeprom_read(np, off + 1);
5781 if (err < 0)
5782 return err;
5783 val |= (err & 0xff);
5784
5785 return val;
5786 }
5787
5788 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
5789 {
5790 int err = niu_pci_eeprom_read(np, off);
5791 u16 val;
5792
5793 if (err < 0)
5794 return err;
5795
5796 val = (err & 0xff);
5797 err = niu_pci_eeprom_read(np, off + 1);
5798 if (err < 0)
5799 return err;
5800
5801 val |= (err & 0xff) << 8;
5802
5803 return val;
5804 }
5805
5806 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
5807 u32 off,
5808 char *namebuf,
5809 int namebuf_len)
5810 {
5811 int i;
5812
5813 for (i = 0; i < namebuf_len; i++) {
5814 int err = niu_pci_eeprom_read(np, off + i);
5815 if (err < 0)
5816 return err;
5817 *namebuf++ = err;
5818 if (!err)
5819 break;
5820 }
5821 if (i >= namebuf_len)
5822 return -EINVAL;
5823
5824 return i + 1;
5825 }
5826
5827 static void __devinit niu_vpd_parse_version(struct niu *np)
5828 {
5829 struct niu_vpd *vpd = &np->vpd;
5830 int len = strlen(vpd->version) + 1;
5831 const char *s = vpd->version;
5832 int i;
5833
5834 for (i = 0; i < len - 5; i++) {
5835 if (!strncmp(s + i, "FCode ", 5))
5836 break;
5837 }
5838 if (i >= len - 5)
5839 return;
5840
5841 s += i + 5;
5842 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
5843
5844 niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
5845 vpd->fcode_major, vpd->fcode_minor);
5846 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
5847 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
5848 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
5849 np->flags |= NIU_FLAGS_VPD_VALID;
5850 }
5851
5852 /* ESPC_PIO_EN_ENABLE must be set */
5853 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
5854 u32 start, u32 end)
5855 {
5856 unsigned int found_mask = 0;
5857 #define FOUND_MASK_MODEL 0x00000001
5858 #define FOUND_MASK_BMODEL 0x00000002
5859 #define FOUND_MASK_VERS 0x00000004
5860 #define FOUND_MASK_MAC 0x00000008
5861 #define FOUND_MASK_NMAC 0x00000010
5862 #define FOUND_MASK_PHY 0x00000020
5863 #define FOUND_MASK_ALL 0x0000003f
5864
5865 niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
5866 start, end);
5867 while (start < end) {
5868 int len, err, instance, type, prop_len;
5869 char namebuf[64];
5870 u8 *prop_buf;
5871 int max_len;
5872
5873 if (found_mask == FOUND_MASK_ALL) {
5874 niu_vpd_parse_version(np);
5875 return 1;
5876 }
5877
5878 err = niu_pci_eeprom_read(np, start + 2);
5879 if (err < 0)
5880 return err;
5881 len = err;
5882 start += 3;
5883
5884 instance = niu_pci_eeprom_read(np, start);
5885 type = niu_pci_eeprom_read(np, start + 3);
5886 prop_len = niu_pci_eeprom_read(np, start + 4);
5887 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
5888 if (err < 0)
5889 return err;
5890
5891 prop_buf = NULL;
5892 max_len = 0;
5893 if (!strcmp(namebuf, "model")) {
5894 prop_buf = np->vpd.model;
5895 max_len = NIU_VPD_MODEL_MAX;
5896 found_mask |= FOUND_MASK_MODEL;
5897 } else if (!strcmp(namebuf, "board-model")) {
5898 prop_buf = np->vpd.board_model;
5899 max_len = NIU_VPD_BD_MODEL_MAX;
5900 found_mask |= FOUND_MASK_BMODEL;
5901 } else if (!strcmp(namebuf, "version")) {
5902 prop_buf = np->vpd.version;
5903 max_len = NIU_VPD_VERSION_MAX;
5904 found_mask |= FOUND_MASK_VERS;
5905 } else if (!strcmp(namebuf, "local-mac-address")) {
5906 prop_buf = np->vpd.local_mac;
5907 max_len = ETH_ALEN;
5908 found_mask |= FOUND_MASK_MAC;
5909 } else if (!strcmp(namebuf, "num-mac-addresses")) {
5910 prop_buf = &np->vpd.mac_num;
5911 max_len = 1;
5912 found_mask |= FOUND_MASK_NMAC;
5913 } else if (!strcmp(namebuf, "phy-type")) {
5914 prop_buf = np->vpd.phy_type;
5915 max_len = NIU_VPD_PHY_TYPE_MAX;
5916 found_mask |= FOUND_MASK_PHY;
5917 }
5918
5919 if (max_len && prop_len > max_len) {
5920 dev_err(np->device, PFX "Property '%s' length (%d) is "
5921 "too long.\n", namebuf, prop_len);
5922 return -EINVAL;
5923 }
5924
5925 if (prop_buf) {
5926 u32 off = start + 5 + err;
5927 int i;
5928
5929 niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
5930 "len[%d]\n", namebuf, prop_len);
5931 for (i = 0; i < prop_len; i++)
5932 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
5933 }
5934
5935 start += len;
5936 }
5937
5938 return 0;
5939 }
5940
5941 /* ESPC_PIO_EN_ENABLE must be set */
5942 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
5943 {
5944 u32 offset;
5945 int err;
5946
5947 err = niu_pci_eeprom_read16_swp(np, start + 1);
5948 if (err < 0)
5949 return;
5950
5951 offset = err + 3;
5952
5953 while (start + offset < ESPC_EEPROM_SIZE) {
5954 u32 here = start + offset;
5955 u32 end;
5956
5957 err = niu_pci_eeprom_read(np, here);
5958 if (err != 0x90)
5959 return;
5960
5961 err = niu_pci_eeprom_read16_swp(np, here + 1);
5962 if (err < 0)
5963 return;
5964
5965 here = start + offset + 3;
5966 end = start + offset + err;
5967
5968 offset += err;
5969
5970 err = niu_pci_vpd_scan_props(np, here, end);
5971 if (err < 0 || err == 1)
5972 return;
5973 }
5974 }
5975
5976 /* ESPC_PIO_EN_ENABLE must be set */
5977 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
5978 {
5979 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
5980 int err;
5981
5982 while (start < end) {
5983 ret = start;
5984
5985 /* ROM header signature? */
5986 err = niu_pci_eeprom_read16(np, start + 0);
5987 if (err != 0x55aa)
5988 return 0;
5989
5990 /* Apply offset to PCI data structure. */
5991 err = niu_pci_eeprom_read16(np, start + 23);
5992 if (err < 0)
5993 return 0;
5994 start += err;
5995
5996 /* Check for "PCIR" signature. */
5997 err = niu_pci_eeprom_read16(np, start + 0);
5998 if (err != 0x5043)
5999 return 0;
6000 err = niu_pci_eeprom_read16(np, start + 2);
6001 if (err != 0x4952)
6002 return 0;
6003
6004 /* Check for OBP image type. */
6005 err = niu_pci_eeprom_read(np, start + 20);
6006 if (err < 0)
6007 return 0;
6008 if (err != 0x01) {
6009 err = niu_pci_eeprom_read(np, ret + 2);
6010 if (err < 0)
6011 return 0;
6012
6013 start = ret + (err * 512);
6014 continue;
6015 }
6016
6017 err = niu_pci_eeprom_read16_swp(np, start + 8);
6018 if (err < 0)
6019 return err;
6020 ret += err;
6021
6022 err = niu_pci_eeprom_read(np, ret + 0);
6023 if (err != 0x82)
6024 return 0;
6025
6026 return ret;
6027 }
6028
6029 return 0;
6030 }
6031
6032 static int __devinit niu_phy_type_prop_decode(struct niu *np,
6033 const char *phy_prop)
6034 {
6035 if (!strcmp(phy_prop, "mif")) {
6036 /* 1G copper, MII */
6037 np->flags &= ~(NIU_FLAGS_FIBER |
6038 NIU_FLAGS_10G);
6039 np->mac_xcvr = MAC_XCVR_MII;
6040 } else if (!strcmp(phy_prop, "xgf")) {
6041 /* 10G fiber, XPCS */
6042 np->flags |= (NIU_FLAGS_10G |
6043 NIU_FLAGS_FIBER);
6044 np->mac_xcvr = MAC_XCVR_XPCS;
6045 } else if (!strcmp(phy_prop, "pcs")) {
6046 /* 1G fiber, PCS */
6047 np->flags &= ~NIU_FLAGS_10G;
6048 np->flags |= NIU_FLAGS_FIBER;
6049 np->mac_xcvr = MAC_XCVR_PCS;
6050 } else if (!strcmp(phy_prop, "xgc")) {
6051 /* 10G copper, XPCS */
6052 np->flags |= NIU_FLAGS_10G;
6053 np->flags &= ~NIU_FLAGS_FIBER;
6054 np->mac_xcvr = MAC_XCVR_XPCS;
6055 } else {
6056 return -EINVAL;
6057 }
6058 return 0;
6059 }
6060
6061 static void __devinit niu_pci_vpd_validate(struct niu *np)
6062 {
6063 struct net_device *dev = np->dev;
6064 struct niu_vpd *vpd = &np->vpd;
6065 u8 val8;
6066
6067 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
6068 dev_err(np->device, PFX "VPD MAC invalid, "
6069 "falling back to SPROM.\n");
6070
6071 np->flags &= ~NIU_FLAGS_VPD_VALID;
6072 return;
6073 }
6074
6075 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6076 dev_err(np->device, PFX "Illegal phy string [%s].\n",
6077 np->vpd.phy_type);
6078 dev_err(np->device, PFX "Falling back to SPROM.\n");
6079 np->flags &= ~NIU_FLAGS_VPD_VALID;
6080 return;
6081 }
6082
6083 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
6084
6085 val8 = dev->perm_addr[5];
6086 dev->perm_addr[5] += np->port;
6087 if (dev->perm_addr[5] < val8)
6088 dev->perm_addr[4]++;
6089
6090 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6091 }
6092
6093 static int __devinit niu_pci_probe_sprom(struct niu *np)
6094 {
6095 struct net_device *dev = np->dev;
6096 int len, i;
6097 u64 val, sum;
6098 u8 val8;
6099
6100 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
6101 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
6102 len = val / 4;
6103
6104 np->eeprom_len = len;
6105
6106 niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
6107
6108 sum = 0;
6109 for (i = 0; i < len; i++) {
6110 val = nr64(ESPC_NCR(i));
6111 sum += (val >> 0) & 0xff;
6112 sum += (val >> 8) & 0xff;
6113 sum += (val >> 16) & 0xff;
6114 sum += (val >> 24) & 0xff;
6115 }
6116 niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
6117 if ((sum & 0xff) != 0xab) {
6118 dev_err(np->device, PFX "Bad SPROM checksum "
6119 "(%x, should be 0xab)\n", (int) (sum & 0xff));
6120 return -EINVAL;
6121 }
6122
6123 val = nr64(ESPC_PHY_TYPE);
6124 switch (np->port) {
6125 case 0:
6126 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
6127 ESPC_PHY_TYPE_PORT0_SHIFT;
6128 break;
6129 case 1:
6130 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
6131 ESPC_PHY_TYPE_PORT1_SHIFT;
6132 break;
6133 case 2:
6134 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
6135 ESPC_PHY_TYPE_PORT2_SHIFT;
6136 break;
6137 case 3:
6138 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
6139 ESPC_PHY_TYPE_PORT3_SHIFT;
6140 break;
6141 default:
6142 dev_err(np->device, PFX "Bogus port number %u\n",
6143 np->port);
6144 return -EINVAL;
6145 }
6146 niudbg(PROBE, "SPROM: PHY type %x\n", val8);
6147
6148 switch (val8) {
6149 case ESPC_PHY_TYPE_1G_COPPER:
6150 /* 1G copper, MII */
6151 np->flags &= ~(NIU_FLAGS_FIBER |
6152 NIU_FLAGS_10G);
6153 np->mac_xcvr = MAC_XCVR_MII;
6154 break;
6155
6156 case ESPC_PHY_TYPE_1G_FIBER:
6157 /* 1G fiber, PCS */
6158 np->flags &= ~NIU_FLAGS_10G;
6159 np->flags |= NIU_FLAGS_FIBER;
6160 np->mac_xcvr = MAC_XCVR_PCS;
6161 break;
6162
6163 case ESPC_PHY_TYPE_10G_COPPER:
6164 /* 10G copper, XPCS */
6165 np->flags |= NIU_FLAGS_10G;
6166 np->flags &= ~NIU_FLAGS_FIBER;
6167 np->mac_xcvr = MAC_XCVR_XPCS;
6168 break;
6169
6170 case ESPC_PHY_TYPE_10G_FIBER:
6171 /* 10G fiber, XPCS */
6172 np->flags |= (NIU_FLAGS_10G |
6173 NIU_FLAGS_FIBER);
6174 np->mac_xcvr = MAC_XCVR_XPCS;
6175 break;
6176
6177 default:
6178 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
6179 return -EINVAL;
6180 }
6181
6182 val = nr64(ESPC_MAC_ADDR0);
6183 niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
6184 (unsigned long long) val);
6185 dev->perm_addr[0] = (val >> 0) & 0xff;
6186 dev->perm_addr[1] = (val >> 8) & 0xff;
6187 dev->perm_addr[2] = (val >> 16) & 0xff;
6188 dev->perm_addr[3] = (val >> 24) & 0xff;
6189
6190 val = nr64(ESPC_MAC_ADDR1);
6191 niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
6192 (unsigned long long) val);
6193 dev->perm_addr[4] = (val >> 0) & 0xff;
6194 dev->perm_addr[5] = (val >> 8) & 0xff;
6195
6196 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6197 dev_err(np->device, PFX "SPROM MAC address invalid\n");
6198 dev_err(np->device, PFX "[ \n");
6199 for (i = 0; i < 6; i++)
6200 printk("%02x ", dev->perm_addr[i]);
6201 printk("]\n");
6202 return -EINVAL;
6203 }
6204
6205 val8 = dev->perm_addr[5];
6206 dev->perm_addr[5] += np->port;
6207 if (dev->perm_addr[5] < val8)
6208 dev->perm_addr[4]++;
6209
6210 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6211
6212 val = nr64(ESPC_MOD_STR_LEN);
6213 niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
6214 (unsigned long long) val);
6215 if (val >= 8 * 4)
6216 return -EINVAL;
6217
6218 for (i = 0; i < val; i += 4) {
6219 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
6220
6221 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
6222 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
6223 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
6224 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
6225 }
6226 np->vpd.model[val] = '\0';
6227
6228 val = nr64(ESPC_BD_MOD_STR_LEN);
6229 niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
6230 (unsigned long long) val);
6231 if (val >= 4 * 4)
6232 return -EINVAL;
6233
6234 for (i = 0; i < val; i += 4) {
6235 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
6236
6237 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
6238 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
6239 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
6240 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
6241 }
6242 np->vpd.board_model[val] = '\0';
6243
6244 np->vpd.mac_num =
6245 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
6246 niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
6247 np->vpd.mac_num);
6248
6249 return 0;
6250 }
6251
6252 static int __devinit niu_get_and_validate_port(struct niu *np)
6253 {
6254 struct niu_parent *parent = np->parent;
6255
6256 if (np->port <= 1)
6257 np->flags |= NIU_FLAGS_XMAC;
6258
6259 if (!parent->num_ports) {
6260 if (parent->plat_type == PLAT_TYPE_NIU) {
6261 parent->num_ports = 2;
6262 } else {
6263 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
6264 ESPC_NUM_PORTS_MACS_VAL;
6265
6266 if (!parent->num_ports)
6267 parent->num_ports = 4;
6268 }
6269 }
6270
6271 niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
6272 np->port, parent->num_ports);
6273 if (np->port >= parent->num_ports)
6274 return -ENODEV;
6275
6276 return 0;
6277 }
6278
6279 static int __devinit phy_record(struct niu_parent *parent,
6280 struct phy_probe_info *p,
6281 int dev_id_1, int dev_id_2, u8 phy_port,
6282 int type)
6283 {
6284 u32 id = (dev_id_1 << 16) | dev_id_2;
6285 u8 idx;
6286
6287 if (dev_id_1 < 0 || dev_id_2 < 0)
6288 return 0;
6289 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
6290 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704)
6291 return 0;
6292 } else {
6293 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
6294 return 0;
6295 }
6296
6297 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
6298 parent->index, id,
6299 (type == PHY_TYPE_PMA_PMD ?
6300 "PMA/PMD" :
6301 (type == PHY_TYPE_PCS ?
6302 "PCS" : "MII")),
6303 phy_port);
6304
6305 if (p->cur[type] >= NIU_MAX_PORTS) {
6306 printk(KERN_ERR PFX "Too many PHY ports.\n");
6307 return -EINVAL;
6308 }
6309 idx = p->cur[type];
6310 p->phy_id[type][idx] = id;
6311 p->phy_port[type][idx] = phy_port;
6312 p->cur[type] = idx + 1;
6313 return 0;
6314 }
6315
6316 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
6317 {
6318 int i;
6319
6320 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
6321 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
6322 return 1;
6323 }
6324 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
6325 if (p->phy_port[PHY_TYPE_PCS][i] == port)
6326 return 1;
6327 }
6328
6329 return 0;
6330 }
6331
6332 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
6333 {
6334 int port, cnt;
6335
6336 cnt = 0;
6337 *lowest = 32;
6338 for (port = 8; port < 32; port++) {
6339 if (port_has_10g(p, port)) {
6340 if (!cnt)
6341 *lowest = port;
6342 cnt++;
6343 }
6344 }
6345
6346 return cnt;
6347 }
6348
6349 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
6350 {
6351 *lowest = 32;
6352 if (p->cur[PHY_TYPE_MII])
6353 *lowest = p->phy_port[PHY_TYPE_MII][0];
6354
6355 return p->cur[PHY_TYPE_MII];
6356 }
6357
6358 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
6359 {
6360 int num_ports = parent->num_ports;
6361 int i;
6362
6363 for (i = 0; i < num_ports; i++) {
6364 parent->rxchan_per_port[i] = (16 / num_ports);
6365 parent->txchan_per_port[i] = (16 / num_ports);
6366
6367 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6368 "[%u TX chans]\n",
6369 parent->index, i,
6370 parent->rxchan_per_port[i],
6371 parent->txchan_per_port[i]);
6372 }
6373 }
6374
6375 static void __devinit niu_divide_channels(struct niu_parent *parent,
6376 int num_10g, int num_1g)
6377 {
6378 int num_ports = parent->num_ports;
6379 int rx_chans_per_10g, rx_chans_per_1g;
6380 int tx_chans_per_10g, tx_chans_per_1g;
6381 int i, tot_rx, tot_tx;
6382
6383 if (!num_10g || !num_1g) {
6384 rx_chans_per_10g = rx_chans_per_1g =
6385 (NIU_NUM_RXCHAN / num_ports);
6386 tx_chans_per_10g = tx_chans_per_1g =
6387 (NIU_NUM_TXCHAN / num_ports);
6388 } else {
6389 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
6390 rx_chans_per_10g = (NIU_NUM_RXCHAN -
6391 (rx_chans_per_1g * num_1g)) /
6392 num_10g;
6393
6394 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
6395 tx_chans_per_10g = (NIU_NUM_TXCHAN -
6396 (tx_chans_per_1g * num_1g)) /
6397 num_10g;
6398 }
6399
6400 tot_rx = tot_tx = 0;
6401 for (i = 0; i < num_ports; i++) {
6402 int type = phy_decode(parent->port_phy, i);
6403
6404 if (type == PORT_TYPE_10G) {
6405 parent->rxchan_per_port[i] = rx_chans_per_10g;
6406 parent->txchan_per_port[i] = tx_chans_per_10g;
6407 } else {
6408 parent->rxchan_per_port[i] = rx_chans_per_1g;
6409 parent->txchan_per_port[i] = tx_chans_per_1g;
6410 }
6411 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6412 "[%u TX chans]\n",
6413 parent->index, i,
6414 parent->rxchan_per_port[i],
6415 parent->txchan_per_port[i]);
6416 tot_rx += parent->rxchan_per_port[i];
6417 tot_tx += parent->txchan_per_port[i];
6418 }
6419
6420 if (tot_rx > NIU_NUM_RXCHAN) {
6421 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
6422 "resetting to one per port.\n",
6423 parent->index, tot_rx);
6424 for (i = 0; i < num_ports; i++)
6425 parent->rxchan_per_port[i] = 1;
6426 }
6427 if (tot_tx > NIU_NUM_TXCHAN) {
6428 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
6429 "resetting to one per port.\n",
6430 parent->index, tot_tx);
6431 for (i = 0; i < num_ports; i++)
6432 parent->txchan_per_port[i] = 1;
6433 }
6434 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
6435 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
6436 "RX[%d] TX[%d]\n",
6437 parent->index, tot_rx, tot_tx);
6438 }
6439 }
6440
6441 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
6442 int num_10g, int num_1g)
6443 {
6444 int i, num_ports = parent->num_ports;
6445 int rdc_group, rdc_groups_per_port;
6446 int rdc_channel_base;
6447
6448 rdc_group = 0;
6449 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
6450
6451 rdc_channel_base = 0;
6452
6453 for (i = 0; i < num_ports; i++) {
6454 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
6455 int grp, num_channels = parent->rxchan_per_port[i];
6456 int this_channel_offset;
6457
6458 tp->first_table_num = rdc_group;
6459 tp->num_tables = rdc_groups_per_port;
6460 this_channel_offset = 0;
6461 for (grp = 0; grp < tp->num_tables; grp++) {
6462 struct rdc_table *rt = &tp->tables[grp];
6463 int slot;
6464
6465 pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
6466 parent->index, i, tp->first_table_num + grp);
6467 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
6468 rt->rxdma_channel[slot] =
6469 rdc_channel_base + this_channel_offset;
6470
6471 printk("%d ", rt->rxdma_channel[slot]);
6472
6473 if (++this_channel_offset == num_channels)
6474 this_channel_offset = 0;
6475 }
6476 printk("]\n");
6477 }
6478
6479 parent->rdc_default[i] = rdc_channel_base;
6480
6481 rdc_channel_base += num_channels;
6482 rdc_group += rdc_groups_per_port;
6483 }
6484 }
6485
6486 static int __devinit fill_phy_probe_info(struct niu *np,
6487 struct niu_parent *parent,
6488 struct phy_probe_info *info)
6489 {
6490 unsigned long flags;
6491 int port, err;
6492
6493 memset(info, 0, sizeof(*info));
6494
6495 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
6496 niu_lock_parent(np, flags);
6497 err = 0;
6498 for (port = 8; port < 32; port++) {
6499 int dev_id_1, dev_id_2;
6500
6501 dev_id_1 = mdio_read(np, port,
6502 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
6503 dev_id_2 = mdio_read(np, port,
6504 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
6505 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6506 PHY_TYPE_PMA_PMD);
6507 if (err)
6508 break;
6509 dev_id_1 = mdio_read(np, port,
6510 NIU_PCS_DEV_ADDR, MII_PHYSID1);
6511 dev_id_2 = mdio_read(np, port,
6512 NIU_PCS_DEV_ADDR, MII_PHYSID2);
6513 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6514 PHY_TYPE_PCS);
6515 if (err)
6516 break;
6517 dev_id_1 = mii_read(np, port, MII_PHYSID1);
6518 dev_id_2 = mii_read(np, port, MII_PHYSID2);
6519 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6520 PHY_TYPE_MII);
6521 if (err)
6522 break;
6523 }
6524 niu_unlock_parent(np, flags);
6525
6526 return err;
6527 }
6528
6529 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
6530 {
6531 struct phy_probe_info *info = &parent->phy_probe_info;
6532 int lowest_10g, lowest_1g;
6533 int num_10g, num_1g;
6534 u32 val;
6535 int err;
6536
6537 err = fill_phy_probe_info(np, parent, info);
6538 if (err)
6539 return err;
6540
6541 num_10g = count_10g_ports(info, &lowest_10g);
6542 num_1g = count_1g_ports(info, &lowest_1g);
6543
6544 switch ((num_10g << 4) | num_1g) {
6545 case 0x24:
6546 if (lowest_1g == 10)
6547 parent->plat_type = PLAT_TYPE_VF_P0;
6548 else if (lowest_1g == 26)
6549 parent->plat_type = PLAT_TYPE_VF_P1;
6550 else
6551 goto unknown_vg_1g_port;
6552
6553 /* fallthru */
6554 case 0x22:
6555 val = (phy_encode(PORT_TYPE_10G, 0) |
6556 phy_encode(PORT_TYPE_10G, 1) |
6557 phy_encode(PORT_TYPE_1G, 2) |
6558 phy_encode(PORT_TYPE_1G, 3));
6559 break;
6560
6561 case 0x20:
6562 val = (phy_encode(PORT_TYPE_10G, 0) |
6563 phy_encode(PORT_TYPE_10G, 1));
6564 break;
6565
6566 case 0x10:
6567 val = phy_encode(PORT_TYPE_10G, np->port);
6568 break;
6569
6570 case 0x14:
6571 if (lowest_1g == 10)
6572 parent->plat_type = PLAT_TYPE_VF_P0;
6573 else if (lowest_1g == 26)
6574 parent->plat_type = PLAT_TYPE_VF_P1;
6575 else
6576 goto unknown_vg_1g_port;
6577
6578 /* fallthru */
6579 case 0x13:
6580 if ((lowest_10g & 0x7) == 0)
6581 val = (phy_encode(PORT_TYPE_10G, 0) |
6582 phy_encode(PORT_TYPE_1G, 1) |
6583 phy_encode(PORT_TYPE_1G, 2) |
6584 phy_encode(PORT_TYPE_1G, 3));
6585 else
6586 val = (phy_encode(PORT_TYPE_1G, 0) |
6587 phy_encode(PORT_TYPE_10G, 1) |
6588 phy_encode(PORT_TYPE_1G, 2) |
6589 phy_encode(PORT_TYPE_1G, 3));
6590 break;
6591
6592 case 0x04:
6593 if (lowest_1g == 10)
6594 parent->plat_type = PLAT_TYPE_VF_P0;
6595 else if (lowest_1g == 26)
6596 parent->plat_type = PLAT_TYPE_VF_P1;
6597 else
6598 goto unknown_vg_1g_port;
6599
6600 val = (phy_encode(PORT_TYPE_1G, 0) |
6601 phy_encode(PORT_TYPE_1G, 1) |
6602 phy_encode(PORT_TYPE_1G, 2) |
6603 phy_encode(PORT_TYPE_1G, 3));
6604 break;
6605
6606 default:
6607 printk(KERN_ERR PFX "Unsupported port config "
6608 "10G[%d] 1G[%d]\n",
6609 num_10g, num_1g);
6610 return -EINVAL;
6611 }
6612
6613 parent->port_phy = val;
6614
6615 if (parent->plat_type == PLAT_TYPE_NIU)
6616 niu_n2_divide_channels(parent);
6617 else
6618 niu_divide_channels(parent, num_10g, num_1g);
6619
6620 niu_divide_rdc_groups(parent, num_10g, num_1g);
6621
6622 return 0;
6623
6624 unknown_vg_1g_port:
6625 printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
6626 lowest_1g);
6627 return -EINVAL;
6628 }
6629
6630 static int __devinit niu_probe_ports(struct niu *np)
6631 {
6632 struct niu_parent *parent = np->parent;
6633 int err, i;
6634
6635 niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
6636 parent->port_phy);
6637
6638 if (parent->port_phy == PORT_PHY_UNKNOWN) {
6639 err = walk_phys(np, parent);
6640 if (err)
6641 return err;
6642
6643 niu_set_ldg_timer_res(np, 2);
6644 for (i = 0; i <= LDN_MAX; i++)
6645 niu_ldn_irq_enable(np, i, 0);
6646 }
6647
6648 if (parent->port_phy == PORT_PHY_INVALID)
6649 return -EINVAL;
6650
6651 return 0;
6652 }
6653
6654 static int __devinit niu_classifier_swstate_init(struct niu *np)
6655 {
6656 struct niu_classifier *cp = &np->clas;
6657
6658 niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
6659 np->parent->tcam_num_entries);
6660
6661 cp->tcam_index = (u16) np->port;
6662 cp->h1_init = 0xffffffff;
6663 cp->h2_init = 0xffff;
6664
6665 return fflp_early_init(np);
6666 }
6667
6668 static void __devinit niu_link_config_init(struct niu *np)
6669 {
6670 struct niu_link_config *lp = &np->link_config;
6671
6672 lp->advertising = (ADVERTISED_10baseT_Half |
6673 ADVERTISED_10baseT_Full |
6674 ADVERTISED_100baseT_Half |
6675 ADVERTISED_100baseT_Full |
6676 ADVERTISED_1000baseT_Half |
6677 ADVERTISED_1000baseT_Full |
6678 ADVERTISED_10000baseT_Full |
6679 ADVERTISED_Autoneg);
6680 lp->speed = lp->active_speed = SPEED_INVALID;
6681 lp->duplex = lp->active_duplex = DUPLEX_INVALID;
6682 #if 0
6683 lp->loopback_mode = LOOPBACK_MAC;
6684 lp->active_speed = SPEED_10000;
6685 lp->active_duplex = DUPLEX_FULL;
6686 #else
6687 lp->loopback_mode = LOOPBACK_DISABLED;
6688 #endif
6689 }
6690
6691 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
6692 {
6693 switch (np->port) {
6694 case 0:
6695 np->mac_regs = np->regs + XMAC_PORT0_OFF;
6696 np->ipp_off = 0x00000;
6697 np->pcs_off = 0x04000;
6698 np->xpcs_off = 0x02000;
6699 break;
6700
6701 case 1:
6702 np->mac_regs = np->regs + XMAC_PORT1_OFF;
6703 np->ipp_off = 0x08000;
6704 np->pcs_off = 0x0a000;
6705 np->xpcs_off = 0x08000;
6706 break;
6707
6708 case 2:
6709 np->mac_regs = np->regs + BMAC_PORT2_OFF;
6710 np->ipp_off = 0x04000;
6711 np->pcs_off = 0x0e000;
6712 np->xpcs_off = ~0UL;
6713 break;
6714
6715 case 3:
6716 np->mac_regs = np->regs + BMAC_PORT3_OFF;
6717 np->ipp_off = 0x0c000;
6718 np->pcs_off = 0x12000;
6719 np->xpcs_off = ~0UL;
6720 break;
6721
6722 default:
6723 dev_err(np->device, PFX "Port %u is invalid, cannot "
6724 "compute MAC block offset.\n", np->port);
6725 return -EINVAL;
6726 }
6727
6728 return 0;
6729 }
6730
6731 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
6732 {
6733 struct msix_entry msi_vec[NIU_NUM_LDG];
6734 struct niu_parent *parent = np->parent;
6735 struct pci_dev *pdev = np->pdev;
6736 int i, num_irqs, err;
6737 u8 first_ldg;
6738
6739 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
6740 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
6741 ldg_num_map[i] = first_ldg + i;
6742
6743 num_irqs = (parent->rxchan_per_port[np->port] +
6744 parent->txchan_per_port[np->port] +
6745 (np->port == 0 ? 3 : 1));
6746 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
6747
6748 retry:
6749 for (i = 0; i < num_irqs; i++) {
6750 msi_vec[i].vector = 0;
6751 msi_vec[i].entry = i;
6752 }
6753
6754 err = pci_enable_msix(pdev, msi_vec, num_irqs);
6755 if (err < 0) {
6756 np->flags &= ~NIU_FLAGS_MSIX;
6757 return;
6758 }
6759 if (err > 0) {
6760 num_irqs = err;
6761 goto retry;
6762 }
6763
6764 np->flags |= NIU_FLAGS_MSIX;
6765 for (i = 0; i < num_irqs; i++)
6766 np->ldg[i].irq = msi_vec[i].vector;
6767 np->num_ldg = num_irqs;
6768 }
6769
6770 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
6771 {
6772 #ifdef CONFIG_SPARC64
6773 struct of_device *op = np->op;
6774 const u32 *int_prop;
6775 int i;
6776
6777 int_prop = of_get_property(op->node, "interrupts", NULL);
6778 if (!int_prop)
6779 return -ENODEV;
6780
6781 for (i = 0; i < op->num_irqs; i++) {
6782 ldg_num_map[i] = int_prop[i];
6783 np->ldg[i].irq = op->irqs[i];
6784 }
6785
6786 np->num_ldg = op->num_irqs;
6787
6788 return 0;
6789 #else
6790 return -EINVAL;
6791 #endif
6792 }
6793
6794 static int __devinit niu_ldg_init(struct niu *np)
6795 {
6796 struct niu_parent *parent = np->parent;
6797 u8 ldg_num_map[NIU_NUM_LDG];
6798 int first_chan, num_chan;
6799 int i, err, ldg_rotor;
6800 u8 port;
6801
6802 np->num_ldg = 1;
6803 np->ldg[0].irq = np->dev->irq;
6804 if (parent->plat_type == PLAT_TYPE_NIU) {
6805 err = niu_n2_irq_init(np, ldg_num_map);
6806 if (err)
6807 return err;
6808 } else
6809 niu_try_msix(np, ldg_num_map);
6810
6811 port = np->port;
6812 for (i = 0; i < np->num_ldg; i++) {
6813 struct niu_ldg *lp = &np->ldg[i];
6814
6815 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
6816
6817 lp->np = np;
6818 lp->ldg_num = ldg_num_map[i];
6819 lp->timer = 2; /* XXX */
6820
6821 /* On N2 NIU the firmware has setup the SID mappings so they go
6822 * to the correct values that will route the LDG to the proper
6823 * interrupt in the NCU interrupt table.
6824 */
6825 if (np->parent->plat_type != PLAT_TYPE_NIU) {
6826 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
6827 if (err)
6828 return err;
6829 }
6830 }
6831
6832 /* We adopt the LDG assignment ordering used by the N2 NIU
6833 * 'interrupt' properties because that simplifies a lot of
6834 * things. This ordering is:
6835 *
6836 * MAC
6837 * MIF (if port zero)
6838 * SYSERR (if port zero)
6839 * RX channels
6840 * TX channels
6841 */
6842
6843 ldg_rotor = 0;
6844
6845 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
6846 LDN_MAC(port));
6847 if (err)
6848 return err;
6849
6850 ldg_rotor++;
6851 if (ldg_rotor == np->num_ldg)
6852 ldg_rotor = 0;
6853
6854 if (port == 0) {
6855 err = niu_ldg_assign_ldn(np, parent,
6856 ldg_num_map[ldg_rotor],
6857 LDN_MIF);
6858 if (err)
6859 return err;
6860
6861 ldg_rotor++;
6862 if (ldg_rotor == np->num_ldg)
6863 ldg_rotor = 0;
6864
6865 err = niu_ldg_assign_ldn(np, parent,
6866 ldg_num_map[ldg_rotor],
6867 LDN_DEVICE_ERROR);
6868 if (err)
6869 return err;
6870
6871 ldg_rotor++;
6872 if (ldg_rotor == np->num_ldg)
6873 ldg_rotor = 0;
6874
6875 }
6876
6877 first_chan = 0;
6878 for (i = 0; i < port; i++)
6879 first_chan += parent->rxchan_per_port[port];
6880 num_chan = parent->rxchan_per_port[port];
6881
6882 for (i = first_chan; i < (first_chan + num_chan); i++) {
6883 err = niu_ldg_assign_ldn(np, parent,
6884 ldg_num_map[ldg_rotor],
6885 LDN_RXDMA(i));
6886 if (err)
6887 return err;
6888 ldg_rotor++;
6889 if (ldg_rotor == np->num_ldg)
6890 ldg_rotor = 0;
6891 }
6892
6893 first_chan = 0;
6894 for (i = 0; i < port; i++)
6895 first_chan += parent->txchan_per_port[port];
6896 num_chan = parent->txchan_per_port[port];
6897 for (i = first_chan; i < (first_chan + num_chan); i++) {
6898 err = niu_ldg_assign_ldn(np, parent,
6899 ldg_num_map[ldg_rotor],
6900 LDN_TXDMA(i));
6901 if (err)
6902 return err;
6903 ldg_rotor++;
6904 if (ldg_rotor == np->num_ldg)
6905 ldg_rotor = 0;
6906 }
6907
6908 return 0;
6909 }
6910
6911 static void __devexit niu_ldg_free(struct niu *np)
6912 {
6913 if (np->flags & NIU_FLAGS_MSIX)
6914 pci_disable_msix(np->pdev);
6915 }
6916
6917 static int __devinit niu_get_of_props(struct niu *np)
6918 {
6919 #ifdef CONFIG_SPARC64
6920 struct net_device *dev = np->dev;
6921 struct device_node *dp;
6922 const char *phy_type;
6923 const u8 *mac_addr;
6924 int prop_len;
6925
6926 if (np->parent->plat_type == PLAT_TYPE_NIU)
6927 dp = np->op->node;
6928 else
6929 dp = pci_device_to_OF_node(np->pdev);
6930
6931 phy_type = of_get_property(dp, "phy-type", &prop_len);
6932 if (!phy_type) {
6933 dev_err(np->device, PFX "%s: OF node lacks "
6934 "phy-type property\n",
6935 dp->full_name);
6936 return -EINVAL;
6937 }
6938
6939 if (!strcmp(phy_type, "none"))
6940 return -ENODEV;
6941
6942 strcpy(np->vpd.phy_type, phy_type);
6943
6944 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6945 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
6946 dp->full_name, np->vpd.phy_type);
6947 return -EINVAL;
6948 }
6949
6950 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
6951 if (!mac_addr) {
6952 dev_err(np->device, PFX "%s: OF node lacks "
6953 "local-mac-address property\n",
6954 dp->full_name);
6955 return -EINVAL;
6956 }
6957 if (prop_len != dev->addr_len) {
6958 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
6959 "is wrong.\n",
6960 dp->full_name, prop_len);
6961 }
6962 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
6963 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6964 int i;
6965
6966 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
6967 dp->full_name);
6968 dev_err(np->device, PFX "%s: [ \n",
6969 dp->full_name);
6970 for (i = 0; i < 6; i++)
6971 printk("%02x ", dev->perm_addr[i]);
6972 printk("]\n");
6973 return -EINVAL;
6974 }
6975
6976 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6977
6978 return 0;
6979 #else
6980 return -EINVAL;
6981 #endif
6982 }
6983
6984 static int __devinit niu_get_invariants(struct niu *np)
6985 {
6986 int err, have_props;
6987 u32 offset;
6988
6989 err = niu_get_of_props(np);
6990 if (err == -ENODEV)
6991 return err;
6992
6993 have_props = !err;
6994
6995 err = niu_get_and_validate_port(np);
6996 if (err)
6997 return err;
6998
6999 err = niu_init_mac_ipp_pcs_base(np);
7000 if (err)
7001 return err;
7002
7003 if (!have_props) {
7004 if (np->parent->plat_type == PLAT_TYPE_NIU)
7005 return -EINVAL;
7006
7007 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
7008 offset = niu_pci_vpd_offset(np);
7009 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
7010 offset);
7011 if (offset)
7012 niu_pci_vpd_fetch(np, offset);
7013 nw64(ESPC_PIO_EN, 0);
7014
7015 if (np->flags & NIU_FLAGS_VPD_VALID)
7016 niu_pci_vpd_validate(np);
7017
7018 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
7019 err = niu_pci_probe_sprom(np);
7020 if (err)
7021 return err;
7022 }
7023 }
7024
7025 err = niu_probe_ports(np);
7026 if (err)
7027 return err;
7028
7029 niu_ldg_init(np);
7030
7031 niu_classifier_swstate_init(np);
7032 niu_link_config_init(np);
7033
7034 err = niu_determine_phy_disposition(np);
7035 if (!err)
7036 err = niu_init_link(np);
7037
7038 return err;
7039 }
7040
7041 static LIST_HEAD(niu_parent_list);
7042 static DEFINE_MUTEX(niu_parent_lock);
7043 static int niu_parent_index;
7044
7045 static ssize_t show_port_phy(struct device *dev,
7046 struct device_attribute *attr, char *buf)
7047 {
7048 struct platform_device *plat_dev = to_platform_device(dev);
7049 struct niu_parent *p = plat_dev->dev.platform_data;
7050 u32 port_phy = p->port_phy;
7051 char *orig_buf = buf;
7052 int i;
7053
7054 if (port_phy == PORT_PHY_UNKNOWN ||
7055 port_phy == PORT_PHY_INVALID)
7056 return 0;
7057
7058 for (i = 0; i < p->num_ports; i++) {
7059 const char *type_str;
7060 int type;
7061
7062 type = phy_decode(port_phy, i);
7063 if (type == PORT_TYPE_10G)
7064 type_str = "10G";
7065 else
7066 type_str = "1G";
7067 buf += sprintf(buf,
7068 (i == 0) ? "%s" : " %s",
7069 type_str);
7070 }
7071 buf += sprintf(buf, "\n");
7072 return buf - orig_buf;
7073 }
7074
7075 static ssize_t show_plat_type(struct device *dev,
7076 struct device_attribute *attr, char *buf)
7077 {
7078 struct platform_device *plat_dev = to_platform_device(dev);
7079 struct niu_parent *p = plat_dev->dev.platform_data;
7080 const char *type_str;
7081
7082 switch (p->plat_type) {
7083 case PLAT_TYPE_ATLAS:
7084 type_str = "atlas";
7085 break;
7086 case PLAT_TYPE_NIU:
7087 type_str = "niu";
7088 break;
7089 case PLAT_TYPE_VF_P0:
7090 type_str = "vf_p0";
7091 break;
7092 case PLAT_TYPE_VF_P1:
7093 type_str = "vf_p1";
7094 break;
7095 default:
7096 type_str = "unknown";
7097 break;
7098 }
7099
7100 return sprintf(buf, "%s\n", type_str);
7101 }
7102
7103 static ssize_t __show_chan_per_port(struct device *dev,
7104 struct device_attribute *attr, char *buf,
7105 int rx)
7106 {
7107 struct platform_device *plat_dev = to_platform_device(dev);
7108 struct niu_parent *p = plat_dev->dev.platform_data;
7109 char *orig_buf = buf;
7110 u8 *arr;
7111 int i;
7112
7113 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
7114
7115 for (i = 0; i < p->num_ports; i++) {
7116 buf += sprintf(buf,
7117 (i == 0) ? "%d" : " %d",
7118 arr[i]);
7119 }
7120 buf += sprintf(buf, "\n");
7121
7122 return buf - orig_buf;
7123 }
7124
7125 static ssize_t show_rxchan_per_port(struct device *dev,
7126 struct device_attribute *attr, char *buf)
7127 {
7128 return __show_chan_per_port(dev, attr, buf, 1);
7129 }
7130
7131 static ssize_t show_txchan_per_port(struct device *dev,
7132 struct device_attribute *attr, char *buf)
7133 {
7134 return __show_chan_per_port(dev, attr, buf, 1);
7135 }
7136
7137 static ssize_t show_num_ports(struct device *dev,
7138 struct device_attribute *attr, char *buf)
7139 {
7140 struct platform_device *plat_dev = to_platform_device(dev);
7141 struct niu_parent *p = plat_dev->dev.platform_data;
7142
7143 return sprintf(buf, "%d\n", p->num_ports);
7144 }
7145
7146 static struct device_attribute niu_parent_attributes[] = {
7147 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
7148 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
7149 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
7150 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
7151 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
7152 {}
7153 };
7154
7155 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
7156 union niu_parent_id *id,
7157 u8 ptype)
7158 {
7159 struct platform_device *plat_dev;
7160 struct niu_parent *p;
7161 int i;
7162
7163 niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
7164
7165 plat_dev = platform_device_register_simple("niu", niu_parent_index,
7166 NULL, 0);
7167 if (!plat_dev)
7168 return NULL;
7169
7170 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
7171 int err = device_create_file(&plat_dev->dev,
7172 &niu_parent_attributes[i]);
7173 if (err)
7174 goto fail_unregister;
7175 }
7176
7177 p = kzalloc(sizeof(*p), GFP_KERNEL);
7178 if (!p)
7179 goto fail_unregister;
7180
7181 p->index = niu_parent_index++;
7182
7183 plat_dev->dev.platform_data = p;
7184 p->plat_dev = plat_dev;
7185
7186 memcpy(&p->id, id, sizeof(*id));
7187 p->plat_type = ptype;
7188 INIT_LIST_HEAD(&p->list);
7189 atomic_set(&p->refcnt, 0);
7190 list_add(&p->list, &niu_parent_list);
7191 spin_lock_init(&p->lock);
7192
7193 p->rxdma_clock_divider = 7500;
7194
7195 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
7196 if (p->plat_type == PLAT_TYPE_NIU)
7197 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
7198
7199 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
7200 int index = i - CLASS_CODE_USER_PROG1;
7201
7202 p->tcam_key[index] = TCAM_KEY_TSEL;
7203 p->flow_key[index] = (FLOW_KEY_IPSA |
7204 FLOW_KEY_IPDA |
7205 FLOW_KEY_PROTO |
7206 (FLOW_KEY_L4_BYTE12 <<
7207 FLOW_KEY_L4_0_SHIFT) |
7208 (FLOW_KEY_L4_BYTE12 <<
7209 FLOW_KEY_L4_1_SHIFT));
7210 }
7211
7212 for (i = 0; i < LDN_MAX + 1; i++)
7213 p->ldg_map[i] = LDG_INVALID;
7214
7215 return p;
7216
7217 fail_unregister:
7218 platform_device_unregister(plat_dev);
7219 return NULL;
7220 }
7221
7222 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
7223 union niu_parent_id *id,
7224 u8 ptype)
7225 {
7226 struct niu_parent *p, *tmp;
7227 int port = np->port;
7228
7229 niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
7230 ptype, port);
7231
7232 mutex_lock(&niu_parent_lock);
7233 p = NULL;
7234 list_for_each_entry(tmp, &niu_parent_list, list) {
7235 if (!memcmp(id, &tmp->id, sizeof(*id))) {
7236 p = tmp;
7237 break;
7238 }
7239 }
7240 if (!p)
7241 p = niu_new_parent(np, id, ptype);
7242
7243 if (p) {
7244 char port_name[6];
7245 int err;
7246
7247 sprintf(port_name, "port%d", port);
7248 err = sysfs_create_link(&p->plat_dev->dev.kobj,
7249 &np->device->kobj,
7250 port_name);
7251 if (!err) {
7252 p->ports[port] = np;
7253 atomic_inc(&p->refcnt);
7254 }
7255 }
7256 mutex_unlock(&niu_parent_lock);
7257
7258 return p;
7259 }
7260
7261 static void niu_put_parent(struct niu *np)
7262 {
7263 struct niu_parent *p = np->parent;
7264 u8 port = np->port;
7265 char port_name[6];
7266
7267 BUG_ON(!p || p->ports[port] != np);
7268
7269 niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
7270
7271 sprintf(port_name, "port%d", port);
7272
7273 mutex_lock(&niu_parent_lock);
7274
7275 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
7276
7277 p->ports[port] = NULL;
7278 np->parent = NULL;
7279
7280 if (atomic_dec_and_test(&p->refcnt)) {
7281 list_del(&p->list);
7282 platform_device_unregister(p->plat_dev);
7283 }
7284
7285 mutex_unlock(&niu_parent_lock);
7286 }
7287
7288 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
7289 u64 *handle, gfp_t flag)
7290 {
7291 dma_addr_t dh;
7292 void *ret;
7293
7294 ret = dma_alloc_coherent(dev, size, &dh, flag);
7295 if (ret)
7296 *handle = dh;
7297 return ret;
7298 }
7299
7300 static void niu_pci_free_coherent(struct device *dev, size_t size,
7301 void *cpu_addr, u64 handle)
7302 {
7303 dma_free_coherent(dev, size, cpu_addr, handle);
7304 }
7305
7306 static u64 niu_pci_map_page(struct device *dev, struct page *page,
7307 unsigned long offset, size_t size,
7308 enum dma_data_direction direction)
7309 {
7310 return dma_map_page(dev, page, offset, size, direction);
7311 }
7312
7313 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
7314 size_t size, enum dma_data_direction direction)
7315 {
7316 return dma_unmap_page(dev, dma_address, size, direction);
7317 }
7318
7319 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
7320 size_t size,
7321 enum dma_data_direction direction)
7322 {
7323 return dma_map_single(dev, cpu_addr, size, direction);
7324 }
7325
7326 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
7327 size_t size,
7328 enum dma_data_direction direction)
7329 {
7330 dma_unmap_single(dev, dma_address, size, direction);
7331 }
7332
7333 static const struct niu_ops niu_pci_ops = {
7334 .alloc_coherent = niu_pci_alloc_coherent,
7335 .free_coherent = niu_pci_free_coherent,
7336 .map_page = niu_pci_map_page,
7337 .unmap_page = niu_pci_unmap_page,
7338 .map_single = niu_pci_map_single,
7339 .unmap_single = niu_pci_unmap_single,
7340 };
7341
7342 static void __devinit niu_driver_version(void)
7343 {
7344 static int niu_version_printed;
7345
7346 if (niu_version_printed++ == 0)
7347 pr_info("%s", version);
7348 }
7349
7350 static struct net_device * __devinit niu_alloc_and_init(
7351 struct device *gen_dev, struct pci_dev *pdev,
7352 struct of_device *op, const struct niu_ops *ops,
7353 u8 port)
7354 {
7355 struct net_device *dev = alloc_etherdev(sizeof(struct niu));
7356 struct niu *np;
7357
7358 if (!dev) {
7359 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
7360 return NULL;
7361 }
7362
7363 SET_NETDEV_DEV(dev, gen_dev);
7364
7365 np = netdev_priv(dev);
7366 np->dev = dev;
7367 np->pdev = pdev;
7368 np->op = op;
7369 np->device = gen_dev;
7370 np->ops = ops;
7371
7372 np->msg_enable = niu_debug;
7373
7374 spin_lock_init(&np->lock);
7375 INIT_WORK(&np->reset_task, niu_reset_task);
7376
7377 np->port = port;
7378
7379 return dev;
7380 }
7381
7382 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
7383 {
7384 dev->open = niu_open;
7385 dev->stop = niu_close;
7386 dev->get_stats = niu_get_stats;
7387 dev->set_multicast_list = niu_set_rx_mode;
7388 dev->set_mac_address = niu_set_mac_addr;
7389 dev->do_ioctl = niu_ioctl;
7390 dev->tx_timeout = niu_tx_timeout;
7391 dev->hard_start_xmit = niu_start_xmit;
7392 dev->ethtool_ops = &niu_ethtool_ops;
7393 dev->watchdog_timeo = NIU_TX_TIMEOUT;
7394 dev->change_mtu = niu_change_mtu;
7395 }
7396
7397 static void __devinit niu_device_announce(struct niu *np)
7398 {
7399 struct net_device *dev = np->dev;
7400 int i;
7401
7402 pr_info("%s: NIU Ethernet ", dev->name);
7403 for (i = 0; i < 6; i++)
7404 printk("%2.2x%c", dev->dev_addr[i],
7405 i == 5 ? '\n' : ':');
7406
7407 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
7408 dev->name,
7409 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
7410 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
7411 (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
7412 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
7413 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
7414 np->vpd.phy_type);
7415 }
7416
7417 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
7418 const struct pci_device_id *ent)
7419 {
7420 unsigned long niureg_base, niureg_len;
7421 union niu_parent_id parent_id;
7422 struct net_device *dev;
7423 struct niu *np;
7424 int err, pos;
7425 u64 dma_mask;
7426 u16 val16;
7427
7428 niu_driver_version();
7429
7430 err = pci_enable_device(pdev);
7431 if (err) {
7432 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
7433 "aborting.\n");
7434 return err;
7435 }
7436
7437 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
7438 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
7439 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
7440 "base addresses, aborting.\n");
7441 err = -ENODEV;
7442 goto err_out_disable_pdev;
7443 }
7444
7445 err = pci_request_regions(pdev, DRV_MODULE_NAME);
7446 if (err) {
7447 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
7448 "aborting.\n");
7449 goto err_out_disable_pdev;
7450 }
7451
7452 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
7453 if (pos <= 0) {
7454 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
7455 "aborting.\n");
7456 goto err_out_free_res;
7457 }
7458
7459 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
7460 &niu_pci_ops, PCI_FUNC(pdev->devfn));
7461 if (!dev) {
7462 err = -ENOMEM;
7463 goto err_out_free_res;
7464 }
7465 np = netdev_priv(dev);
7466
7467 memset(&parent_id, 0, sizeof(parent_id));
7468 parent_id.pci.domain = pci_domain_nr(pdev->bus);
7469 parent_id.pci.bus = pdev->bus->number;
7470 parent_id.pci.device = PCI_SLOT(pdev->devfn);
7471
7472 np->parent = niu_get_parent(np, &parent_id,
7473 PLAT_TYPE_ATLAS);
7474 if (!np->parent) {
7475 err = -ENOMEM;
7476 goto err_out_free_dev;
7477 }
7478
7479 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
7480 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
7481 val16 |= (PCI_EXP_DEVCTL_CERE |
7482 PCI_EXP_DEVCTL_NFERE |
7483 PCI_EXP_DEVCTL_FERE |
7484 PCI_EXP_DEVCTL_URRE |
7485 PCI_EXP_DEVCTL_RELAX_EN);
7486 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
7487
7488 dma_mask = DMA_44BIT_MASK;
7489 err = pci_set_dma_mask(pdev, dma_mask);
7490 if (!err) {
7491 dev->features |= NETIF_F_HIGHDMA;
7492 err = pci_set_consistent_dma_mask(pdev, dma_mask);
7493 if (err) {
7494 dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
7495 "DMA for consistent allocations, "
7496 "aborting.\n");
7497 goto err_out_release_parent;
7498 }
7499 }
7500 if (err || dma_mask == DMA_32BIT_MASK) {
7501 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7502 if (err) {
7503 dev_err(&pdev->dev, PFX "No usable DMA configuration, "
7504 "aborting.\n");
7505 goto err_out_release_parent;
7506 }
7507 }
7508
7509 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7510
7511 niureg_base = pci_resource_start(pdev, 0);
7512 niureg_len = pci_resource_len(pdev, 0);
7513
7514 np->regs = ioremap_nocache(niureg_base, niureg_len);
7515 if (!np->regs) {
7516 dev_err(&pdev->dev, PFX "Cannot map device registers, "
7517 "aborting.\n");
7518 err = -ENOMEM;
7519 goto err_out_release_parent;
7520 }
7521
7522 pci_set_master(pdev);
7523 pci_save_state(pdev);
7524
7525 dev->irq = pdev->irq;
7526
7527 niu_assign_netdev_ops(dev);
7528
7529 err = niu_get_invariants(np);
7530 if (err) {
7531 if (err != -ENODEV)
7532 dev_err(&pdev->dev, PFX "Problem fetching invariants "
7533 "of chip, aborting.\n");
7534 goto err_out_iounmap;
7535 }
7536
7537 err = register_netdev(dev);
7538 if (err) {
7539 dev_err(&pdev->dev, PFX "Cannot register net device, "
7540 "aborting.\n");
7541 goto err_out_iounmap;
7542 }
7543
7544 pci_set_drvdata(pdev, dev);
7545
7546 niu_device_announce(np);
7547
7548 return 0;
7549
7550 err_out_iounmap:
7551 if (np->regs) {
7552 iounmap(np->regs);
7553 np->regs = NULL;
7554 }
7555
7556 err_out_release_parent:
7557 niu_put_parent(np);
7558
7559 err_out_free_dev:
7560 free_netdev(dev);
7561
7562 err_out_free_res:
7563 pci_release_regions(pdev);
7564
7565 err_out_disable_pdev:
7566 pci_disable_device(pdev);
7567 pci_set_drvdata(pdev, NULL);
7568
7569 return err;
7570 }
7571
7572 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
7573 {
7574 struct net_device *dev = pci_get_drvdata(pdev);
7575
7576 if (dev) {
7577 struct niu *np = netdev_priv(dev);
7578
7579 unregister_netdev(dev);
7580 if (np->regs) {
7581 iounmap(np->regs);
7582 np->regs = NULL;
7583 }
7584
7585 niu_ldg_free(np);
7586
7587 niu_put_parent(np);
7588
7589 free_netdev(dev);
7590 pci_release_regions(pdev);
7591 pci_disable_device(pdev);
7592 pci_set_drvdata(pdev, NULL);
7593 }
7594 }
7595
7596 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
7597 {
7598 struct net_device *dev = pci_get_drvdata(pdev);
7599 struct niu *np = netdev_priv(dev);
7600 unsigned long flags;
7601
7602 if (!netif_running(dev))
7603 return 0;
7604
7605 flush_scheduled_work();
7606 niu_netif_stop(np);
7607
7608 del_timer_sync(&np->timer);
7609
7610 spin_lock_irqsave(&np->lock, flags);
7611 niu_enable_interrupts(np, 0);
7612 spin_unlock_irqrestore(&np->lock, flags);
7613
7614 netif_device_detach(dev);
7615
7616 spin_lock_irqsave(&np->lock, flags);
7617 niu_stop_hw(np);
7618 spin_unlock_irqrestore(&np->lock, flags);
7619
7620 pci_save_state(pdev);
7621
7622 return 0;
7623 }
7624
7625 static int niu_resume(struct pci_dev *pdev)
7626 {
7627 struct net_device *dev = pci_get_drvdata(pdev);
7628 struct niu *np = netdev_priv(dev);
7629 unsigned long flags;
7630 int err;
7631
7632 if (!netif_running(dev))
7633 return 0;
7634
7635 pci_restore_state(pdev);
7636
7637 netif_device_attach(dev);
7638
7639 spin_lock_irqsave(&np->lock, flags);
7640
7641 err = niu_init_hw(np);
7642 if (!err) {
7643 np->timer.expires = jiffies + HZ;
7644 add_timer(&np->timer);
7645 niu_netif_start(np);
7646 }
7647
7648 spin_unlock_irqrestore(&np->lock, flags);
7649
7650 return err;
7651 }
7652
7653 static struct pci_driver niu_pci_driver = {
7654 .name = DRV_MODULE_NAME,
7655 .id_table = niu_pci_tbl,
7656 .probe = niu_pci_init_one,
7657 .remove = __devexit_p(niu_pci_remove_one),
7658 .suspend = niu_suspend,
7659 .resume = niu_resume,
7660 };
7661
7662 #ifdef CONFIG_SPARC64
7663 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
7664 u64 *dma_addr, gfp_t flag)
7665 {
7666 unsigned long order = get_order(size);
7667 unsigned long page = __get_free_pages(flag, order);
7668
7669 if (page == 0UL)
7670 return NULL;
7671 memset((char *)page, 0, PAGE_SIZE << order);
7672 *dma_addr = __pa(page);
7673
7674 return (void *) page;
7675 }
7676
7677 static void niu_phys_free_coherent(struct device *dev, size_t size,
7678 void *cpu_addr, u64 handle)
7679 {
7680 unsigned long order = get_order(size);
7681
7682 free_pages((unsigned long) cpu_addr, order);
7683 }
7684
7685 static u64 niu_phys_map_page(struct device *dev, struct page *page,
7686 unsigned long offset, size_t size,
7687 enum dma_data_direction direction)
7688 {
7689 return page_to_phys(page) + offset;
7690 }
7691
7692 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
7693 size_t size, enum dma_data_direction direction)
7694 {
7695 /* Nothing to do. */
7696 }
7697
7698 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
7699 size_t size,
7700 enum dma_data_direction direction)
7701 {
7702 return __pa(cpu_addr);
7703 }
7704
7705 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
7706 size_t size,
7707 enum dma_data_direction direction)
7708 {
7709 /* Nothing to do. */
7710 }
7711
7712 static const struct niu_ops niu_phys_ops = {
7713 .alloc_coherent = niu_phys_alloc_coherent,
7714 .free_coherent = niu_phys_free_coherent,
7715 .map_page = niu_phys_map_page,
7716 .unmap_page = niu_phys_unmap_page,
7717 .map_single = niu_phys_map_single,
7718 .unmap_single = niu_phys_unmap_single,
7719 };
7720
7721 static unsigned long res_size(struct resource *r)
7722 {
7723 return r->end - r->start + 1UL;
7724 }
7725
7726 static int __devinit niu_of_probe(struct of_device *op,
7727 const struct of_device_id *match)
7728 {
7729 union niu_parent_id parent_id;
7730 struct net_device *dev;
7731 struct niu *np;
7732 const u32 *reg;
7733 int err;
7734
7735 niu_driver_version();
7736
7737 reg = of_get_property(op->node, "reg", NULL);
7738 if (!reg) {
7739 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
7740 op->node->full_name);
7741 return -ENODEV;
7742 }
7743
7744 dev = niu_alloc_and_init(&op->dev, NULL, op,
7745 &niu_phys_ops, reg[0] & 0x1);
7746 if (!dev) {
7747 err = -ENOMEM;
7748 goto err_out;
7749 }
7750 np = netdev_priv(dev);
7751
7752 memset(&parent_id, 0, sizeof(parent_id));
7753 parent_id.of = of_get_parent(op->node);
7754
7755 np->parent = niu_get_parent(np, &parent_id,
7756 PLAT_TYPE_NIU);
7757 if (!np->parent) {
7758 err = -ENOMEM;
7759 goto err_out_free_dev;
7760 }
7761
7762 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7763
7764 np->regs = of_ioremap(&op->resource[1], 0,
7765 res_size(&op->resource[1]),
7766 "niu regs");
7767 if (!np->regs) {
7768 dev_err(&op->dev, PFX "Cannot map device registers, "
7769 "aborting.\n");
7770 err = -ENOMEM;
7771 goto err_out_release_parent;
7772 }
7773
7774 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
7775 res_size(&op->resource[2]),
7776 "niu vregs-1");
7777 if (!np->vir_regs_1) {
7778 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
7779 "aborting.\n");
7780 err = -ENOMEM;
7781 goto err_out_iounmap;
7782 }
7783
7784 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
7785 res_size(&op->resource[3]),
7786 "niu vregs-2");
7787 if (!np->vir_regs_2) {
7788 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
7789 "aborting.\n");
7790 err = -ENOMEM;
7791 goto err_out_iounmap;
7792 }
7793
7794 niu_assign_netdev_ops(dev);
7795
7796 err = niu_get_invariants(np);
7797 if (err) {
7798 if (err != -ENODEV)
7799 dev_err(&op->dev, PFX "Problem fetching invariants "
7800 "of chip, aborting.\n");
7801 goto err_out_iounmap;
7802 }
7803
7804 err = register_netdev(dev);
7805 if (err) {
7806 dev_err(&op->dev, PFX "Cannot register net device, "
7807 "aborting.\n");
7808 goto err_out_iounmap;
7809 }
7810
7811 dev_set_drvdata(&op->dev, dev);
7812
7813 niu_device_announce(np);
7814
7815 return 0;
7816
7817 err_out_iounmap:
7818 if (np->vir_regs_1) {
7819 of_iounmap(&op->resource[2], np->vir_regs_1,
7820 res_size(&op->resource[2]));
7821 np->vir_regs_1 = NULL;
7822 }
7823
7824 if (np->vir_regs_2) {
7825 of_iounmap(&op->resource[3], np->vir_regs_2,
7826 res_size(&op->resource[3]));
7827 np->vir_regs_2 = NULL;
7828 }
7829
7830 if (np->regs) {
7831 of_iounmap(&op->resource[1], np->regs,
7832 res_size(&op->resource[1]));
7833 np->regs = NULL;
7834 }
7835
7836 err_out_release_parent:
7837 niu_put_parent(np);
7838
7839 err_out_free_dev:
7840 free_netdev(dev);
7841
7842 err_out:
7843 return err;
7844 }
7845
7846 static int __devexit niu_of_remove(struct of_device *op)
7847 {
7848 struct net_device *dev = dev_get_drvdata(&op->dev);
7849
7850 if (dev) {
7851 struct niu *np = netdev_priv(dev);
7852
7853 unregister_netdev(dev);
7854
7855 if (np->vir_regs_1) {
7856 of_iounmap(&op->resource[2], np->vir_regs_1,
7857 res_size(&op->resource[2]));
7858 np->vir_regs_1 = NULL;
7859 }
7860
7861 if (np->vir_regs_2) {
7862 of_iounmap(&op->resource[3], np->vir_regs_2,
7863 res_size(&op->resource[3]));
7864 np->vir_regs_2 = NULL;
7865 }
7866
7867 if (np->regs) {
7868 of_iounmap(&op->resource[1], np->regs,
7869 res_size(&op->resource[1]));
7870 np->regs = NULL;
7871 }
7872
7873 niu_ldg_free(np);
7874
7875 niu_put_parent(np);
7876
7877 free_netdev(dev);
7878 dev_set_drvdata(&op->dev, NULL);
7879 }
7880 return 0;
7881 }
7882
7883 static struct of_device_id niu_match[] = {
7884 {
7885 .name = "network",
7886 .compatible = "SUNW,niusl",
7887 },
7888 {},
7889 };
7890 MODULE_DEVICE_TABLE(of, niu_match);
7891
7892 static struct of_platform_driver niu_of_driver = {
7893 .name = "niu",
7894 .match_table = niu_match,
7895 .probe = niu_of_probe,
7896 .remove = __devexit_p(niu_of_remove),
7897 };
7898
7899 #endif /* CONFIG_SPARC64 */
7900
7901 static int __init niu_init(void)
7902 {
7903 int err = 0;
7904
7905 BUILD_BUG_ON((PAGE_SIZE < 4 * 1024) ||
7906 ((PAGE_SIZE > 32 * 1024) &&
7907 ((PAGE_SIZE % (32 * 1024)) != 0 &&
7908 (PAGE_SIZE % (16 * 1024)) != 0 &&
7909 (PAGE_SIZE % (8 * 1024)) != 0 &&
7910 (PAGE_SIZE % (4 * 1024)) != 0)));
7911
7912 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
7913
7914 #ifdef CONFIG_SPARC64
7915 err = of_register_driver(&niu_of_driver, &of_bus_type);
7916 #endif
7917
7918 if (!err) {
7919 err = pci_register_driver(&niu_pci_driver);
7920 #ifdef CONFIG_SPARC64
7921 if (err)
7922 of_unregister_driver(&niu_of_driver);
7923 #endif
7924 }
7925
7926 return err;
7927 }
7928
7929 static void __exit niu_exit(void)
7930 {
7931 pci_unregister_driver(&niu_pci_driver);
7932 #ifdef CONFIG_SPARC64
7933 of_unregister_driver(&niu_of_driver);
7934 #endif
7935 }
7936
7937 module_init(niu_init);
7938 module_exit(niu_exit);
linux kernel for loongson