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[JFFS2] Prevent return of initialised variable in jffs2_init_acl_post()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / niu.c
blob112ab079ce7d19af82403d8e148701470ddc2c17
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 bss;
3107
3108 bss = min(PAGE_SHIFT, 15);
3109
3110 rp->rbr_block_size = 1 << bss;
3111 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
3112
3113 rp->rbr_sizes[0] = 256;
3114 rp->rbr_sizes[1] = 1024;
3115 if (np->dev->mtu > ETH_DATA_LEN) {
3116 switch (PAGE_SIZE) {
3117 case 4 * 1024:
3118 rp->rbr_sizes[2] = 4096;
3119 break;
3120
3121 default:
3122 rp->rbr_sizes[2] = 8192;
3123 break;
3124 }
3125 } else {
3126 rp->rbr_sizes[2] = 2048;
3127 }
3128 rp->rbr_sizes[3] = rp->rbr_block_size;
3129 }
3130
3131 static int niu_alloc_channels(struct niu *np)
3132 {
3133 struct niu_parent *parent = np->parent;
3134 int first_rx_channel, first_tx_channel;
3135 int i, port, err;
3136
3137 port = np->port;
3138 first_rx_channel = first_tx_channel = 0;
3139 for (i = 0; i < port; i++) {
3140 first_rx_channel += parent->rxchan_per_port[i];
3141 first_tx_channel += parent->txchan_per_port[i];
3142 }
3143
3144 np->num_rx_rings = parent->rxchan_per_port[port];
3145 np->num_tx_rings = parent->txchan_per_port[port];
3146
3147 np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
3148 GFP_KERNEL);
3149 err = -ENOMEM;
3150 if (!np->rx_rings)
3151 goto out_err;
3152
3153 for (i = 0; i < np->num_rx_rings; i++) {
3154 struct rx_ring_info *rp = &np->rx_rings[i];
3155
3156 rp->np = np;
3157 rp->rx_channel = first_rx_channel + i;
3158
3159 err = niu_alloc_rx_ring_info(np, rp);
3160 if (err)
3161 goto out_err;
3162
3163 niu_size_rbr(np, rp);
3164
3165 /* XXX better defaults, configurable, etc... XXX */
3166 rp->nonsyn_window = 64;
3167 rp->nonsyn_threshold = rp->rcr_table_size - 64;
3168 rp->syn_window = 64;
3169 rp->syn_threshold = rp->rcr_table_size - 64;
3170 rp->rcr_pkt_threshold = 16;
3171 rp->rcr_timeout = 8;
3172 rp->rbr_kick_thresh = RBR_REFILL_MIN;
3173 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
3174 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
3175
3176 err = niu_rbr_fill(np, rp, GFP_KERNEL);
3177 if (err)
3178 return err;
3179 }
3180
3181 np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
3182 GFP_KERNEL);
3183 err = -ENOMEM;
3184 if (!np->tx_rings)
3185 goto out_err;
3186
3187 for (i = 0; i < np->num_tx_rings; i++) {
3188 struct tx_ring_info *rp = &np->tx_rings[i];
3189
3190 rp->np = np;
3191 rp->tx_channel = first_tx_channel + i;
3192
3193 err = niu_alloc_tx_ring_info(np, rp);
3194 if (err)
3195 goto out_err;
3196 }
3197
3198 return 0;
3199
3200 out_err:
3201 niu_free_channels(np);
3202 return err;
3203 }
3204
3205 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
3206 {
3207 int limit = 1000;
3208
3209 while (--limit > 0) {
3210 u64 val = nr64(TX_CS(channel));
3211 if (val & TX_CS_SNG_STATE)
3212 return 0;
3213 }
3214 return -ENODEV;
3215 }
3216
3217 static int niu_tx_channel_stop(struct niu *np, int channel)
3218 {
3219 u64 val = nr64(TX_CS(channel));
3220
3221 val |= TX_CS_STOP_N_GO;
3222 nw64(TX_CS(channel), val);
3223
3224 return niu_tx_cs_sng_poll(np, channel);
3225 }
3226
3227 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
3228 {
3229 int limit = 1000;
3230
3231 while (--limit > 0) {
3232 u64 val = nr64(TX_CS(channel));
3233 if (!(val & TX_CS_RST))
3234 return 0;
3235 }
3236 return -ENODEV;
3237 }
3238
3239 static int niu_tx_channel_reset(struct niu *np, int channel)
3240 {
3241 u64 val = nr64(TX_CS(channel));
3242 int err;
3243
3244 val |= TX_CS_RST;
3245 nw64(TX_CS(channel), val);
3246
3247 err = niu_tx_cs_reset_poll(np, channel);
3248 if (!err)
3249 nw64(TX_RING_KICK(channel), 0);
3250
3251 return err;
3252 }
3253
3254 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
3255 {
3256 u64 val;
3257
3258 nw64(TX_LOG_MASK1(channel), 0);
3259 nw64(TX_LOG_VAL1(channel), 0);
3260 nw64(TX_LOG_MASK2(channel), 0);
3261 nw64(TX_LOG_VAL2(channel), 0);
3262 nw64(TX_LOG_PAGE_RELO1(channel), 0);
3263 nw64(TX_LOG_PAGE_RELO2(channel), 0);
3264 nw64(TX_LOG_PAGE_HDL(channel), 0);
3265
3266 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
3267 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
3268 nw64(TX_LOG_PAGE_VLD(channel), val);
3269
3270 /* XXX TXDMA 32bit mode? XXX */
3271
3272 return 0;
3273 }
3274
3275 static void niu_txc_enable_port(struct niu *np, int on)
3276 {
3277 unsigned long flags;
3278 u64 val, mask;
3279
3280 niu_lock_parent(np, flags);
3281 val = nr64(TXC_CONTROL);
3282 mask = (u64)1 << np->port;
3283 if (on) {
3284 val |= TXC_CONTROL_ENABLE | mask;
3285 } else {
3286 val &= ~mask;
3287 if ((val & ~TXC_CONTROL_ENABLE) == 0)
3288 val &= ~TXC_CONTROL_ENABLE;
3289 }
3290 nw64(TXC_CONTROL, val);
3291 niu_unlock_parent(np, flags);
3292 }
3293
3294 static void niu_txc_set_imask(struct niu *np, u64 imask)
3295 {
3296 unsigned long flags;
3297 u64 val;
3298
3299 niu_lock_parent(np, flags);
3300 val = nr64(TXC_INT_MASK);
3301 val &= ~TXC_INT_MASK_VAL(np->port);
3302 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
3303 niu_unlock_parent(np, flags);
3304 }
3305
3306 static void niu_txc_port_dma_enable(struct niu *np, int on)
3307 {
3308 u64 val = 0;
3309
3310 if (on) {
3311 int i;
3312
3313 for (i = 0; i < np->num_tx_rings; i++)
3314 val |= (1 << np->tx_rings[i].tx_channel);
3315 }
3316 nw64(TXC_PORT_DMA(np->port), val);
3317 }
3318
3319 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
3320 {
3321 int err, channel = rp->tx_channel;
3322 u64 val, ring_len;
3323
3324 err = niu_tx_channel_stop(np, channel);
3325 if (err)
3326 return err;
3327
3328 err = niu_tx_channel_reset(np, channel);
3329 if (err)
3330 return err;
3331
3332 err = niu_tx_channel_lpage_init(np, channel);
3333 if (err)
3334 return err;
3335
3336 nw64(TXC_DMA_MAX(channel), rp->max_burst);
3337 nw64(TX_ENT_MSK(channel), 0);
3338
3339 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
3340 TX_RNG_CFIG_STADDR)) {
3341 dev_err(np->device, PFX "%s: TX ring channel %d "
3342 "DMA addr (%llx) is not aligned.\n",
3343 np->dev->name, channel,
3344 (unsigned long long) rp->descr_dma);
3345 return -EINVAL;
3346 }
3347
3348 /* The length field in TX_RNG_CFIG is measured in 64-byte
3349 * blocks. rp->pending is the number of TX descriptors in
3350 * our ring, 8 bytes each, thus we divide by 8 bytes more
3351 * to get the proper value the chip wants.
3352 */
3353 ring_len = (rp->pending / 8);
3354
3355 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
3356 rp->descr_dma);
3357 nw64(TX_RNG_CFIG(channel), val);
3358
3359 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
3360 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
3361 dev_err(np->device, PFX "%s: TX ring channel %d "
3362 "MBOX addr (%llx) is has illegal bits.\n",
3363 np->dev->name, channel,
3364 (unsigned long long) rp->mbox_dma);
3365 return -EINVAL;
3366 }
3367 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
3368 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
3369
3370 nw64(TX_CS(channel), 0);
3371
3372 rp->last_pkt_cnt = 0;
3373
3374 return 0;
3375 }
3376
3377 static void niu_init_rdc_groups(struct niu *np)
3378 {
3379 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
3380 int i, first_table_num = tp->first_table_num;
3381
3382 for (i = 0; i < tp->num_tables; i++) {
3383 struct rdc_table *tbl = &tp->tables[i];
3384 int this_table = first_table_num + i;
3385 int slot;
3386
3387 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
3388 nw64(RDC_TBL(this_table, slot),
3389 tbl->rxdma_channel[slot]);
3390 }
3391
3392 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
3393 }
3394
3395 static void niu_init_drr_weight(struct niu *np)
3396 {
3397 int type = phy_decode(np->parent->port_phy, np->port);
3398 u64 val;
3399
3400 switch (type) {
3401 case PORT_TYPE_10G:
3402 val = PT_DRR_WEIGHT_DEFAULT_10G;
3403 break;
3404
3405 case PORT_TYPE_1G:
3406 default:
3407 val = PT_DRR_WEIGHT_DEFAULT_1G;
3408 break;
3409 }
3410 nw64(PT_DRR_WT(np->port), val);
3411 }
3412
3413 static int niu_init_hostinfo(struct niu *np)
3414 {
3415 struct niu_parent *parent = np->parent;
3416 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
3417 int i, err, num_alt = niu_num_alt_addr(np);
3418 int first_rdc_table = tp->first_table_num;
3419
3420 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
3421 if (err)
3422 return err;
3423
3424 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
3425 if (err)
3426 return err;
3427
3428 for (i = 0; i < num_alt; i++) {
3429 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
3430 if (err)
3431 return err;
3432 }
3433
3434 return 0;
3435 }
3436
3437 static int niu_rx_channel_reset(struct niu *np, int channel)
3438 {
3439 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
3440 RXDMA_CFIG1_RST, 1000, 10,
3441 "RXDMA_CFIG1");
3442 }
3443
3444 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
3445 {
3446 u64 val;
3447
3448 nw64(RX_LOG_MASK1(channel), 0);
3449 nw64(RX_LOG_VAL1(channel), 0);
3450 nw64(RX_LOG_MASK2(channel), 0);
3451 nw64(RX_LOG_VAL2(channel), 0);
3452 nw64(RX_LOG_PAGE_RELO1(channel), 0);
3453 nw64(RX_LOG_PAGE_RELO2(channel), 0);
3454 nw64(RX_LOG_PAGE_HDL(channel), 0);
3455
3456 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
3457 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
3458 nw64(RX_LOG_PAGE_VLD(channel), val);
3459
3460 return 0;
3461 }
3462
3463 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
3464 {
3465 u64 val;
3466
3467 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
3468 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
3469 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
3470 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
3471 nw64(RDC_RED_PARA(rp->rx_channel), val);
3472 }
3473
3474 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
3475 {
3476 u64 val = 0;
3477
3478 switch (rp->rbr_block_size) {
3479 case 4 * 1024:
3480 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
3481 break;
3482 case 8 * 1024:
3483 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
3484 break;
3485 case 16 * 1024:
3486 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
3487 break;
3488 case 32 * 1024:
3489 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
3490 break;
3491 default:
3492 return -EINVAL;
3493 }
3494 val |= RBR_CFIG_B_VLD2;
3495 switch (rp->rbr_sizes[2]) {
3496 case 2 * 1024:
3497 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
3498 break;
3499 case 4 * 1024:
3500 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
3501 break;
3502 case 8 * 1024:
3503 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
3504 break;
3505 case 16 * 1024:
3506 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
3507 break;
3508
3509 default:
3510 return -EINVAL;
3511 }
3512 val |= RBR_CFIG_B_VLD1;
3513 switch (rp->rbr_sizes[1]) {
3514 case 1 * 1024:
3515 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
3516 break;
3517 case 2 * 1024:
3518 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
3519 break;
3520 case 4 * 1024:
3521 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
3522 break;
3523 case 8 * 1024:
3524 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
3525 break;
3526
3527 default:
3528 return -EINVAL;
3529 }
3530 val |= RBR_CFIG_B_VLD0;
3531 switch (rp->rbr_sizes[0]) {
3532 case 256:
3533 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
3534 break;
3535 case 512:
3536 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
3537 break;
3538 case 1 * 1024:
3539 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
3540 break;
3541 case 2 * 1024:
3542 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
3543 break;
3544
3545 default:
3546 return -EINVAL;
3547 }
3548
3549 *ret = val;
3550 return 0;
3551 }
3552
3553 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
3554 {
3555 u64 val = nr64(RXDMA_CFIG1(channel));
3556 int limit;
3557
3558 if (on)
3559 val |= RXDMA_CFIG1_EN;
3560 else
3561 val &= ~RXDMA_CFIG1_EN;
3562 nw64(RXDMA_CFIG1(channel), val);
3563
3564 limit = 1000;
3565 while (--limit > 0) {
3566 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
3567 break;
3568 udelay(10);
3569 }
3570 if (limit <= 0)
3571 return -ENODEV;
3572 return 0;
3573 }
3574
3575 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
3576 {
3577 int err, channel = rp->rx_channel;
3578 u64 val;
3579
3580 err = niu_rx_channel_reset(np, channel);
3581 if (err)
3582 return err;
3583
3584 err = niu_rx_channel_lpage_init(np, channel);
3585 if (err)
3586 return err;
3587
3588 niu_rx_channel_wred_init(np, rp);
3589
3590 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
3591 nw64(RX_DMA_CTL_STAT(channel),
3592 (RX_DMA_CTL_STAT_MEX |
3593 RX_DMA_CTL_STAT_RCRTHRES |
3594 RX_DMA_CTL_STAT_RCRTO |
3595 RX_DMA_CTL_STAT_RBR_EMPTY));
3596 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
3597 nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
3598 nw64(RBR_CFIG_A(channel),
3599 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
3600 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
3601 err = niu_compute_rbr_cfig_b(rp, &val);
3602 if (err)
3603 return err;
3604 nw64(RBR_CFIG_B(channel), val);
3605 nw64(RCRCFIG_A(channel),
3606 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
3607 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
3608 nw64(RCRCFIG_B(channel),
3609 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
3610 RCRCFIG_B_ENTOUT |
3611 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
3612
3613 err = niu_enable_rx_channel(np, channel, 1);
3614 if (err)
3615 return err;
3616
3617 nw64(RBR_KICK(channel), rp->rbr_index);
3618
3619 val = nr64(RX_DMA_CTL_STAT(channel));
3620 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
3621 nw64(RX_DMA_CTL_STAT(channel), val);
3622
3623 return 0;
3624 }
3625
3626 static int niu_init_rx_channels(struct niu *np)
3627 {
3628 unsigned long flags;
3629 u64 seed = jiffies_64;
3630 int err, i;
3631
3632 niu_lock_parent(np, flags);
3633 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
3634 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
3635 niu_unlock_parent(np, flags);
3636
3637 /* XXX RXDMA 32bit mode? XXX */
3638
3639 niu_init_rdc_groups(np);
3640 niu_init_drr_weight(np);
3641
3642 err = niu_init_hostinfo(np);
3643 if (err)
3644 return err;
3645
3646 for (i = 0; i < np->num_rx_rings; i++) {
3647 struct rx_ring_info *rp = &np->rx_rings[i];
3648
3649 err = niu_init_one_rx_channel(np, rp);
3650 if (err)
3651 return err;
3652 }
3653
3654 return 0;
3655 }
3656
3657 static int niu_set_ip_frag_rule(struct niu *np)
3658 {
3659 struct niu_parent *parent = np->parent;
3660 struct niu_classifier *cp = &np->clas;
3661 struct niu_tcam_entry *tp;
3662 int index, err;
3663
3664 /* XXX fix this allocation scheme XXX */
3665 index = cp->tcam_index;
3666 tp = &parent->tcam[index];
3667
3668 /* Note that the noport bit is the same in both ipv4 and
3669 * ipv6 format TCAM entries.
3670 */
3671 memset(tp, 0, sizeof(*tp));
3672 tp->key[1] = TCAM_V4KEY1_NOPORT;
3673 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
3674 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
3675 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
3676 err = tcam_write(np, index, tp->key, tp->key_mask);
3677 if (err)
3678 return err;
3679 err = tcam_assoc_write(np, index, tp->assoc_data);
3680 if (err)
3681 return err;
3682
3683 return 0;
3684 }
3685
3686 static int niu_init_classifier_hw(struct niu *np)
3687 {
3688 struct niu_parent *parent = np->parent;
3689 struct niu_classifier *cp = &np->clas;
3690 int i, err;
3691
3692 nw64(H1POLY, cp->h1_init);
3693 nw64(H2POLY, cp->h2_init);
3694
3695 err = niu_init_hostinfo(np);
3696 if (err)
3697 return err;
3698
3699 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
3700 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
3701
3702 vlan_tbl_write(np, i, np->port,
3703 vp->vlan_pref, vp->rdc_num);
3704 }
3705
3706 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
3707 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
3708
3709 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
3710 ap->rdc_num, ap->mac_pref);
3711 if (err)
3712 return err;
3713 }
3714
3715 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
3716 int index = i - CLASS_CODE_USER_PROG1;
3717
3718 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
3719 if (err)
3720 return err;
3721 err = niu_set_flow_key(np, i, parent->flow_key[index]);
3722 if (err)
3723 return err;
3724 }
3725
3726 err = niu_set_ip_frag_rule(np);
3727 if (err)
3728 return err;
3729
3730 tcam_enable(np, 1);
3731
3732 return 0;
3733 }
3734
3735 static int niu_zcp_write(struct niu *np, int index, u64 *data)
3736 {
3737 nw64(ZCP_RAM_DATA0, data[0]);
3738 nw64(ZCP_RAM_DATA1, data[1]);
3739 nw64(ZCP_RAM_DATA2, data[2]);
3740 nw64(ZCP_RAM_DATA3, data[3]);
3741 nw64(ZCP_RAM_DATA4, data[4]);
3742 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
3743 nw64(ZCP_RAM_ACC,
3744 (ZCP_RAM_ACC_WRITE |
3745 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3746 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3747
3748 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3749 1000, 100);
3750 }
3751
3752 static int niu_zcp_read(struct niu *np, int index, u64 *data)
3753 {
3754 int err;
3755
3756 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3757 1000, 100);
3758 if (err) {
3759 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
3760 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3761 (unsigned long long) nr64(ZCP_RAM_ACC));
3762 return err;
3763 }
3764
3765 nw64(ZCP_RAM_ACC,
3766 (ZCP_RAM_ACC_READ |
3767 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
3768 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
3769
3770 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
3771 1000, 100);
3772 if (err) {
3773 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
3774 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
3775 (unsigned long long) nr64(ZCP_RAM_ACC));
3776 return err;
3777 }
3778
3779 data[0] = nr64(ZCP_RAM_DATA0);
3780 data[1] = nr64(ZCP_RAM_DATA1);
3781 data[2] = nr64(ZCP_RAM_DATA2);
3782 data[3] = nr64(ZCP_RAM_DATA3);
3783 data[4] = nr64(ZCP_RAM_DATA4);
3784
3785 return 0;
3786 }
3787
3788 static void niu_zcp_cfifo_reset(struct niu *np)
3789 {
3790 u64 val = nr64(RESET_CFIFO);
3791
3792 val |= RESET_CFIFO_RST(np->port);
3793 nw64(RESET_CFIFO, val);
3794 udelay(10);
3795
3796 val &= ~RESET_CFIFO_RST(np->port);
3797 nw64(RESET_CFIFO, val);
3798 }
3799
3800 static int niu_init_zcp(struct niu *np)
3801 {
3802 u64 data[5], rbuf[5];
3803 int i, max, err;
3804
3805 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3806 if (np->port == 0 || np->port == 1)
3807 max = ATLAS_P0_P1_CFIFO_ENTRIES;
3808 else
3809 max = ATLAS_P2_P3_CFIFO_ENTRIES;
3810 } else
3811 max = NIU_CFIFO_ENTRIES;
3812
3813 data[0] = 0;
3814 data[1] = 0;
3815 data[2] = 0;
3816 data[3] = 0;
3817 data[4] = 0;
3818
3819 for (i = 0; i < max; i++) {
3820 err = niu_zcp_write(np, i, data);
3821 if (err)
3822 return err;
3823 err = niu_zcp_read(np, i, rbuf);
3824 if (err)
3825 return err;
3826 }
3827
3828 niu_zcp_cfifo_reset(np);
3829 nw64(CFIFO_ECC(np->port), 0);
3830 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
3831 (void) nr64(ZCP_INT_STAT);
3832 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
3833
3834 return 0;
3835 }
3836
3837 static void niu_ipp_write(struct niu *np, int index, u64 *data)
3838 {
3839 u64 val = nr64_ipp(IPP_CFIG);
3840
3841 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
3842 nw64_ipp(IPP_DFIFO_WR_PTR, index);
3843 nw64_ipp(IPP_DFIFO_WR0, data[0]);
3844 nw64_ipp(IPP_DFIFO_WR1, data[1]);
3845 nw64_ipp(IPP_DFIFO_WR2, data[2]);
3846 nw64_ipp(IPP_DFIFO_WR3, data[3]);
3847 nw64_ipp(IPP_DFIFO_WR4, data[4]);
3848 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
3849 }
3850
3851 static void niu_ipp_read(struct niu *np, int index, u64 *data)
3852 {
3853 nw64_ipp(IPP_DFIFO_RD_PTR, index);
3854 data[0] = nr64_ipp(IPP_DFIFO_RD0);
3855 data[1] = nr64_ipp(IPP_DFIFO_RD1);
3856 data[2] = nr64_ipp(IPP_DFIFO_RD2);
3857 data[3] = nr64_ipp(IPP_DFIFO_RD3);
3858 data[4] = nr64_ipp(IPP_DFIFO_RD4);
3859 }
3860
3861 static int niu_ipp_reset(struct niu *np)
3862 {
3863 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
3864 1000, 100, "IPP_CFIG");
3865 }
3866
3867 static int niu_init_ipp(struct niu *np)
3868 {
3869 u64 data[5], rbuf[5], val;
3870 int i, max, err;
3871
3872 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3873 if (np->port == 0 || np->port == 1)
3874 max = ATLAS_P0_P1_DFIFO_ENTRIES;
3875 else
3876 max = ATLAS_P2_P3_DFIFO_ENTRIES;
3877 } else
3878 max = NIU_DFIFO_ENTRIES;
3879
3880 data[0] = 0;
3881 data[1] = 0;
3882 data[2] = 0;
3883 data[3] = 0;
3884 data[4] = 0;
3885
3886 for (i = 0; i < max; i++) {
3887 niu_ipp_write(np, i, data);
3888 niu_ipp_read(np, i, rbuf);
3889 }
3890
3891 (void) nr64_ipp(IPP_INT_STAT);
3892 (void) nr64_ipp(IPP_INT_STAT);
3893
3894 err = niu_ipp_reset(np);
3895 if (err)
3896 return err;
3897
3898 (void) nr64_ipp(IPP_PKT_DIS);
3899 (void) nr64_ipp(IPP_BAD_CS_CNT);
3900 (void) nr64_ipp(IPP_ECC);
3901
3902 (void) nr64_ipp(IPP_INT_STAT);
3903
3904 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
3905
3906 val = nr64_ipp(IPP_CFIG);
3907 val &= ~IPP_CFIG_IP_MAX_PKT;
3908 val |= (IPP_CFIG_IPP_ENABLE |
3909 IPP_CFIG_DFIFO_ECC_EN |
3910 IPP_CFIG_DROP_BAD_CRC |
3911 IPP_CFIG_CKSUM_EN |
3912 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
3913 nw64_ipp(IPP_CFIG, val);
3914
3915 return 0;
3916 }
3917
3918 static void niu_init_xif_xmac(struct niu *np)
3919 {
3920 struct niu_link_config *lp = &np->link_config;
3921 u64 val;
3922
3923 val = nr64_mac(XMAC_CONFIG);
3924
3925 if ((np->flags & NIU_FLAGS_10G) != 0 &&
3926 (np->flags & NIU_FLAGS_FIBER) != 0) {
3927 if (netif_carrier_ok(np->dev)) {
3928 val |= XMAC_CONFIG_LED_POLARITY;
3929 val &= ~XMAC_CONFIG_FORCE_LED_ON;
3930 } else {
3931 val |= XMAC_CONFIG_FORCE_LED_ON;
3932 val &= ~XMAC_CONFIG_LED_POLARITY;
3933 }
3934 }
3935
3936 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3937
3938 val |= XMAC_CONFIG_TX_OUTPUT_EN;
3939
3940 if (lp->loopback_mode == LOOPBACK_MAC) {
3941 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
3942 val |= XMAC_CONFIG_LOOPBACK;
3943 } else {
3944 val &= ~XMAC_CONFIG_LOOPBACK;
3945 }
3946
3947 if (np->flags & NIU_FLAGS_10G) {
3948 val &= ~XMAC_CONFIG_LFS_DISABLE;
3949 } else {
3950 val |= XMAC_CONFIG_LFS_DISABLE;
3951 if (!(np->flags & NIU_FLAGS_FIBER))
3952 val |= XMAC_CONFIG_1G_PCS_BYPASS;
3953 else
3954 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
3955 }
3956
3957 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
3958
3959 if (lp->active_speed == SPEED_100)
3960 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
3961 else
3962 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
3963
3964 nw64_mac(XMAC_CONFIG, val);
3965
3966 val = nr64_mac(XMAC_CONFIG);
3967 val &= ~XMAC_CONFIG_MODE_MASK;
3968 if (np->flags & NIU_FLAGS_10G) {
3969 val |= XMAC_CONFIG_MODE_XGMII;
3970 } else {
3971 if (lp->active_speed == SPEED_100)
3972 val |= XMAC_CONFIG_MODE_MII;
3973 else
3974 val |= XMAC_CONFIG_MODE_GMII;
3975 }
3976
3977 nw64_mac(XMAC_CONFIG, val);
3978 }
3979
3980 static void niu_init_xif_bmac(struct niu *np)
3981 {
3982 struct niu_link_config *lp = &np->link_config;
3983 u64 val;
3984
3985 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
3986
3987 if (lp->loopback_mode == LOOPBACK_MAC)
3988 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
3989 else
3990 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
3991
3992 if (lp->active_speed == SPEED_1000)
3993 val |= BMAC_XIF_CONFIG_GMII_MODE;
3994 else
3995 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
3996
3997 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
3998 BMAC_XIF_CONFIG_LED_POLARITY);
3999
4000 if (!(np->flags & NIU_FLAGS_10G) &&
4001 !(np->flags & NIU_FLAGS_FIBER) &&
4002 lp->active_speed == SPEED_100)
4003 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
4004 else
4005 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
4006
4007 nw64_mac(BMAC_XIF_CONFIG, val);
4008 }
4009
4010 static void niu_init_xif(struct niu *np)
4011 {
4012 if (np->flags & NIU_FLAGS_XMAC)
4013 niu_init_xif_xmac(np);
4014 else
4015 niu_init_xif_bmac(np);
4016 }
4017
4018 static void niu_pcs_mii_reset(struct niu *np)
4019 {
4020 u64 val = nr64_pcs(PCS_MII_CTL);
4021 val |= PCS_MII_CTL_RST;
4022 nw64_pcs(PCS_MII_CTL, val);
4023 }
4024
4025 static void niu_xpcs_reset(struct niu *np)
4026 {
4027 u64 val = nr64_xpcs(XPCS_CONTROL1);
4028 val |= XPCS_CONTROL1_RESET;
4029 nw64_xpcs(XPCS_CONTROL1, val);
4030 }
4031
4032 static int niu_init_pcs(struct niu *np)
4033 {
4034 struct niu_link_config *lp = &np->link_config;
4035 u64 val;
4036
4037 switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
4038 case NIU_FLAGS_FIBER:
4039 /* 1G fiber */
4040 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
4041 nw64_pcs(PCS_DPATH_MODE, 0);
4042 niu_pcs_mii_reset(np);
4043 break;
4044
4045 case NIU_FLAGS_10G:
4046 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
4047 if (!(np->flags & NIU_FLAGS_XMAC))
4048 return -EINVAL;
4049
4050 /* 10G copper or fiber */
4051 val = nr64_mac(XMAC_CONFIG);
4052 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
4053 nw64_mac(XMAC_CONFIG, val);
4054
4055 niu_xpcs_reset(np);
4056
4057 val = nr64_xpcs(XPCS_CONTROL1);
4058 if (lp->loopback_mode == LOOPBACK_PHY)
4059 val |= XPCS_CONTROL1_LOOPBACK;
4060 else
4061 val &= ~XPCS_CONTROL1_LOOPBACK;
4062 nw64_xpcs(XPCS_CONTROL1, val);
4063
4064 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
4065 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
4066 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
4067 break;
4068
4069 case 0:
4070 /* 1G copper */
4071 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
4072 niu_pcs_mii_reset(np);
4073 break;
4074
4075 default:
4076 return -EINVAL;
4077 }
4078
4079 return 0;
4080 }
4081
4082 static int niu_reset_tx_xmac(struct niu *np)
4083 {
4084 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
4085 (XTXMAC_SW_RST_REG_RS |
4086 XTXMAC_SW_RST_SOFT_RST),
4087 1000, 100, "XTXMAC_SW_RST");
4088 }
4089
4090 static int niu_reset_tx_bmac(struct niu *np)
4091 {
4092 int limit;
4093
4094 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
4095 limit = 1000;
4096 while (--limit >= 0) {
4097 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
4098 break;
4099 udelay(100);
4100 }
4101 if (limit < 0) {
4102 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
4103 "BTXMAC_SW_RST[%llx]\n",
4104 np->port,
4105 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
4106 return -ENODEV;
4107 }
4108
4109 return 0;
4110 }
4111
4112 static int niu_reset_tx_mac(struct niu *np)
4113 {
4114 if (np->flags & NIU_FLAGS_XMAC)
4115 return niu_reset_tx_xmac(np);
4116 else
4117 return niu_reset_tx_bmac(np);
4118 }
4119
4120 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
4121 {
4122 u64 val;
4123
4124 val = nr64_mac(XMAC_MIN);
4125 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
4126 XMAC_MIN_RX_MIN_PKT_SIZE);
4127 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
4128 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
4129 nw64_mac(XMAC_MIN, val);
4130
4131 nw64_mac(XMAC_MAX, max);
4132
4133 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
4134
4135 val = nr64_mac(XMAC_IPG);
4136 if (np->flags & NIU_FLAGS_10G) {
4137 val &= ~XMAC_IPG_IPG_XGMII;
4138 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
4139 } else {
4140 val &= ~XMAC_IPG_IPG_MII_GMII;
4141 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
4142 }
4143 nw64_mac(XMAC_IPG, val);
4144
4145 val = nr64_mac(XMAC_CONFIG);
4146 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
4147 XMAC_CONFIG_STRETCH_MODE |
4148 XMAC_CONFIG_VAR_MIN_IPG_EN |
4149 XMAC_CONFIG_TX_ENABLE);
4150 nw64_mac(XMAC_CONFIG, val);
4151
4152 nw64_mac(TXMAC_FRM_CNT, 0);
4153 nw64_mac(TXMAC_BYTE_CNT, 0);
4154 }
4155
4156 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
4157 {
4158 u64 val;
4159
4160 nw64_mac(BMAC_MIN_FRAME, min);
4161 nw64_mac(BMAC_MAX_FRAME, max);
4162
4163 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
4164 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
4165 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
4166
4167 val = nr64_mac(BTXMAC_CONFIG);
4168 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
4169 BTXMAC_CONFIG_ENABLE);
4170 nw64_mac(BTXMAC_CONFIG, val);
4171 }
4172
4173 static void niu_init_tx_mac(struct niu *np)
4174 {
4175 u64 min, max;
4176
4177 min = 64;
4178 if (np->dev->mtu > ETH_DATA_LEN)
4179 max = 9216;
4180 else
4181 max = 1522;
4182
4183 /* The XMAC_MIN register only accepts values for TX min which
4184 * have the low 3 bits cleared.
4185 */
4186 BUILD_BUG_ON(min & 0x7);
4187
4188 if (np->flags & NIU_FLAGS_XMAC)
4189 niu_init_tx_xmac(np, min, max);
4190 else
4191 niu_init_tx_bmac(np, min, max);
4192 }
4193
4194 static int niu_reset_rx_xmac(struct niu *np)
4195 {
4196 int limit;
4197
4198 nw64_mac(XRXMAC_SW_RST,
4199 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
4200 limit = 1000;
4201 while (--limit >= 0) {
4202 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
4203 XRXMAC_SW_RST_SOFT_RST)))
4204 break;
4205 udelay(100);
4206 }
4207 if (limit < 0) {
4208 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
4209 "XRXMAC_SW_RST[%llx]\n",
4210 np->port,
4211 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
4212 return -ENODEV;
4213 }
4214
4215 return 0;
4216 }
4217
4218 static int niu_reset_rx_bmac(struct niu *np)
4219 {
4220 int limit;
4221
4222 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
4223 limit = 1000;
4224 while (--limit >= 0) {
4225 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
4226 break;
4227 udelay(100);
4228 }
4229 if (limit < 0) {
4230 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
4231 "BRXMAC_SW_RST[%llx]\n",
4232 np->port,
4233 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
4234 return -ENODEV;
4235 }
4236
4237 return 0;
4238 }
4239
4240 static int niu_reset_rx_mac(struct niu *np)
4241 {
4242 if (np->flags & NIU_FLAGS_XMAC)
4243 return niu_reset_rx_xmac(np);
4244 else
4245 return niu_reset_rx_bmac(np);
4246 }
4247
4248 static void niu_init_rx_xmac(struct niu *np)
4249 {
4250 struct niu_parent *parent = np->parent;
4251 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4252 int first_rdc_table = tp->first_table_num;
4253 unsigned long i;
4254 u64 val;
4255
4256 nw64_mac(XMAC_ADD_FILT0, 0);
4257 nw64_mac(XMAC_ADD_FILT1, 0);
4258 nw64_mac(XMAC_ADD_FILT2, 0);
4259 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
4260 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
4261 for (i = 0; i < MAC_NUM_HASH; i++)
4262 nw64_mac(XMAC_HASH_TBL(i), 0);
4263 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
4264 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4265 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4266
4267 val = nr64_mac(XMAC_CONFIG);
4268 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
4269 XMAC_CONFIG_PROMISCUOUS |
4270 XMAC_CONFIG_PROMISC_GROUP |
4271 XMAC_CONFIG_ERR_CHK_DIS |
4272 XMAC_CONFIG_RX_CRC_CHK_DIS |
4273 XMAC_CONFIG_RESERVED_MULTICAST |
4274 XMAC_CONFIG_RX_CODEV_CHK_DIS |
4275 XMAC_CONFIG_ADDR_FILTER_EN |
4276 XMAC_CONFIG_RCV_PAUSE_ENABLE |
4277 XMAC_CONFIG_STRIP_CRC |
4278 XMAC_CONFIG_PASS_FLOW_CTRL |
4279 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
4280 val |= (XMAC_CONFIG_HASH_FILTER_EN);
4281 nw64_mac(XMAC_CONFIG, val);
4282
4283 nw64_mac(RXMAC_BT_CNT, 0);
4284 nw64_mac(RXMAC_BC_FRM_CNT, 0);
4285 nw64_mac(RXMAC_MC_FRM_CNT, 0);
4286 nw64_mac(RXMAC_FRAG_CNT, 0);
4287 nw64_mac(RXMAC_HIST_CNT1, 0);
4288 nw64_mac(RXMAC_HIST_CNT2, 0);
4289 nw64_mac(RXMAC_HIST_CNT3, 0);
4290 nw64_mac(RXMAC_HIST_CNT4, 0);
4291 nw64_mac(RXMAC_HIST_CNT5, 0);
4292 nw64_mac(RXMAC_HIST_CNT6, 0);
4293 nw64_mac(RXMAC_HIST_CNT7, 0);
4294 nw64_mac(RXMAC_MPSZER_CNT, 0);
4295 nw64_mac(RXMAC_CRC_ER_CNT, 0);
4296 nw64_mac(RXMAC_CD_VIO_CNT, 0);
4297 nw64_mac(LINK_FAULT_CNT, 0);
4298 }
4299
4300 static void niu_init_rx_bmac(struct niu *np)
4301 {
4302 struct niu_parent *parent = np->parent;
4303 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4304 int first_rdc_table = tp->first_table_num;
4305 unsigned long i;
4306 u64 val;
4307
4308 nw64_mac(BMAC_ADD_FILT0, 0);
4309 nw64_mac(BMAC_ADD_FILT1, 0);
4310 nw64_mac(BMAC_ADD_FILT2, 0);
4311 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
4312 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
4313 for (i = 0; i < MAC_NUM_HASH; i++)
4314 nw64_mac(BMAC_HASH_TBL(i), 0);
4315 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4316 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4317 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
4318
4319 val = nr64_mac(BRXMAC_CONFIG);
4320 val &= ~(BRXMAC_CONFIG_ENABLE |
4321 BRXMAC_CONFIG_STRIP_PAD |
4322 BRXMAC_CONFIG_STRIP_FCS |
4323 BRXMAC_CONFIG_PROMISC |
4324 BRXMAC_CONFIG_PROMISC_GRP |
4325 BRXMAC_CONFIG_ADDR_FILT_EN |
4326 BRXMAC_CONFIG_DISCARD_DIS);
4327 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
4328 nw64_mac(BRXMAC_CONFIG, val);
4329
4330 val = nr64_mac(BMAC_ADDR_CMPEN);
4331 val |= BMAC_ADDR_CMPEN_EN0;
4332 nw64_mac(BMAC_ADDR_CMPEN, val);
4333 }
4334
4335 static void niu_init_rx_mac(struct niu *np)
4336 {
4337 niu_set_primary_mac(np, np->dev->dev_addr);
4338
4339 if (np->flags & NIU_FLAGS_XMAC)
4340 niu_init_rx_xmac(np);
4341 else
4342 niu_init_rx_bmac(np);
4343 }
4344
4345 static void niu_enable_tx_xmac(struct niu *np, int on)
4346 {
4347 u64 val = nr64_mac(XMAC_CONFIG);
4348
4349 if (on)
4350 val |= XMAC_CONFIG_TX_ENABLE;
4351 else
4352 val &= ~XMAC_CONFIG_TX_ENABLE;
4353 nw64_mac(XMAC_CONFIG, val);
4354 }
4355
4356 static void niu_enable_tx_bmac(struct niu *np, int on)
4357 {
4358 u64 val = nr64_mac(BTXMAC_CONFIG);
4359
4360 if (on)
4361 val |= BTXMAC_CONFIG_ENABLE;
4362 else
4363 val &= ~BTXMAC_CONFIG_ENABLE;
4364 nw64_mac(BTXMAC_CONFIG, val);
4365 }
4366
4367 static void niu_enable_tx_mac(struct niu *np, int on)
4368 {
4369 if (np->flags & NIU_FLAGS_XMAC)
4370 niu_enable_tx_xmac(np, on);
4371 else
4372 niu_enable_tx_bmac(np, on);
4373 }
4374
4375 static void niu_enable_rx_xmac(struct niu *np, int on)
4376 {
4377 u64 val = nr64_mac(XMAC_CONFIG);
4378
4379 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
4380 XMAC_CONFIG_PROMISCUOUS);
4381
4382 if (np->flags & NIU_FLAGS_MCAST)
4383 val |= XMAC_CONFIG_HASH_FILTER_EN;
4384 if (np->flags & NIU_FLAGS_PROMISC)
4385 val |= XMAC_CONFIG_PROMISCUOUS;
4386
4387 if (on)
4388 val |= XMAC_CONFIG_RX_MAC_ENABLE;
4389 else
4390 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
4391 nw64_mac(XMAC_CONFIG, val);
4392 }
4393
4394 static void niu_enable_rx_bmac(struct niu *np, int on)
4395 {
4396 u64 val = nr64_mac(BRXMAC_CONFIG);
4397
4398 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
4399 BRXMAC_CONFIG_PROMISC);
4400
4401 if (np->flags & NIU_FLAGS_MCAST)
4402 val |= BRXMAC_CONFIG_HASH_FILT_EN;
4403 if (np->flags & NIU_FLAGS_PROMISC)
4404 val |= BRXMAC_CONFIG_PROMISC;
4405
4406 if (on)
4407 val |= BRXMAC_CONFIG_ENABLE;
4408 else
4409 val &= ~BRXMAC_CONFIG_ENABLE;
4410 nw64_mac(BRXMAC_CONFIG, val);
4411 }
4412
4413 static void niu_enable_rx_mac(struct niu *np, int on)
4414 {
4415 if (np->flags & NIU_FLAGS_XMAC)
4416 niu_enable_rx_xmac(np, on);
4417 else
4418 niu_enable_rx_bmac(np, on);
4419 }
4420
4421 static int niu_init_mac(struct niu *np)
4422 {
4423 int err;
4424
4425 niu_init_xif(np);
4426 err = niu_init_pcs(np);
4427 if (err)
4428 return err;
4429
4430 err = niu_reset_tx_mac(np);
4431 if (err)
4432 return err;
4433 niu_init_tx_mac(np);
4434 err = niu_reset_rx_mac(np);
4435 if (err)
4436 return err;
4437 niu_init_rx_mac(np);
4438
4439 /* This looks hookey but the RX MAC reset we just did will
4440 * undo some of the state we setup in niu_init_tx_mac() so we
4441 * have to call it again. In particular, the RX MAC reset will
4442 * set the XMAC_MAX register back to it's default value.
4443 */
4444 niu_init_tx_mac(np);
4445 niu_enable_tx_mac(np, 1);
4446
4447 niu_enable_rx_mac(np, 1);
4448
4449 return 0;
4450 }
4451
4452 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4453 {
4454 (void) niu_tx_channel_stop(np, rp->tx_channel);
4455 }
4456
4457 static void niu_stop_tx_channels(struct niu *np)
4458 {
4459 int i;
4460
4461 for (i = 0; i < np->num_tx_rings; i++) {
4462 struct tx_ring_info *rp = &np->tx_rings[i];
4463
4464 niu_stop_one_tx_channel(np, rp);
4465 }
4466 }
4467
4468 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4469 {
4470 (void) niu_tx_channel_reset(np, rp->tx_channel);
4471 }
4472
4473 static void niu_reset_tx_channels(struct niu *np)
4474 {
4475 int i;
4476
4477 for (i = 0; i < np->num_tx_rings; i++) {
4478 struct tx_ring_info *rp = &np->tx_rings[i];
4479
4480 niu_reset_one_tx_channel(np, rp);
4481 }
4482 }
4483
4484 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4485 {
4486 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
4487 }
4488
4489 static void niu_stop_rx_channels(struct niu *np)
4490 {
4491 int i;
4492
4493 for (i = 0; i < np->num_rx_rings; i++) {
4494 struct rx_ring_info *rp = &np->rx_rings[i];
4495
4496 niu_stop_one_rx_channel(np, rp);
4497 }
4498 }
4499
4500 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4501 {
4502 int channel = rp->rx_channel;
4503
4504 (void) niu_rx_channel_reset(np, channel);
4505 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
4506 nw64(RX_DMA_CTL_STAT(channel), 0);
4507 (void) niu_enable_rx_channel(np, channel, 0);
4508 }
4509
4510 static void niu_reset_rx_channels(struct niu *np)
4511 {
4512 int i;
4513
4514 for (i = 0; i < np->num_rx_rings; i++) {
4515 struct rx_ring_info *rp = &np->rx_rings[i];
4516
4517 niu_reset_one_rx_channel(np, rp);
4518 }
4519 }
4520
4521 static void niu_disable_ipp(struct niu *np)
4522 {
4523 u64 rd, wr, val;
4524 int limit;
4525
4526 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4527 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4528 limit = 100;
4529 while (--limit >= 0 && (rd != wr)) {
4530 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
4531 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
4532 }
4533 if (limit < 0 &&
4534 (rd != 0 && wr != 1)) {
4535 dev_err(np->device, PFX "%s: IPP would not quiesce, "
4536 "rd_ptr[%llx] wr_ptr[%llx]\n",
4537 np->dev->name,
4538 (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
4539 (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
4540 }
4541
4542 val = nr64_ipp(IPP_CFIG);
4543 val &= ~(IPP_CFIG_IPP_ENABLE |
4544 IPP_CFIG_DFIFO_ECC_EN |
4545 IPP_CFIG_DROP_BAD_CRC |
4546 IPP_CFIG_CKSUM_EN);
4547 nw64_ipp(IPP_CFIG, val);
4548
4549 (void) niu_ipp_reset(np);
4550 }
4551
4552 static int niu_init_hw(struct niu *np)
4553 {
4554 int i, err;
4555
4556 niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
4557 niu_txc_enable_port(np, 1);
4558 niu_txc_port_dma_enable(np, 1);
4559 niu_txc_set_imask(np, 0);
4560
4561 niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
4562 for (i = 0; i < np->num_tx_rings; i++) {
4563 struct tx_ring_info *rp = &np->tx_rings[i];
4564
4565 err = niu_init_one_tx_channel(np, rp);
4566 if (err)
4567 return err;
4568 }
4569
4570 niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
4571 err = niu_init_rx_channels(np);
4572 if (err)
4573 goto out_uninit_tx_channels;
4574
4575 niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
4576 err = niu_init_classifier_hw(np);
4577 if (err)
4578 goto out_uninit_rx_channels;
4579
4580 niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
4581 err = niu_init_zcp(np);
4582 if (err)
4583 goto out_uninit_rx_channels;
4584
4585 niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
4586 err = niu_init_ipp(np);
4587 if (err)
4588 goto out_uninit_rx_channels;
4589
4590 niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
4591 err = niu_init_mac(np);
4592 if (err)
4593 goto out_uninit_ipp;
4594
4595 return 0;
4596
4597 out_uninit_ipp:
4598 niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
4599 niu_disable_ipp(np);
4600
4601 out_uninit_rx_channels:
4602 niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
4603 niu_stop_rx_channels(np);
4604 niu_reset_rx_channels(np);
4605
4606 out_uninit_tx_channels:
4607 niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
4608 niu_stop_tx_channels(np);
4609 niu_reset_tx_channels(np);
4610
4611 return err;
4612 }
4613
4614 static void niu_stop_hw(struct niu *np)
4615 {
4616 niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
4617 niu_enable_interrupts(np, 0);
4618
4619 niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
4620 niu_enable_rx_mac(np, 0);
4621
4622 niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
4623 niu_disable_ipp(np);
4624
4625 niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
4626 niu_stop_tx_channels(np);
4627
4628 niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
4629 niu_stop_rx_channels(np);
4630
4631 niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
4632 niu_reset_tx_channels(np);
4633
4634 niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
4635 niu_reset_rx_channels(np);
4636 }
4637
4638 static int niu_request_irq(struct niu *np)
4639 {
4640 int i, j, err;
4641
4642 err = 0;
4643 for (i = 0; i < np->num_ldg; i++) {
4644 struct niu_ldg *lp = &np->ldg[i];
4645
4646 err = request_irq(lp->irq, niu_interrupt,
4647 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
4648 np->dev->name, lp);
4649 if (err)
4650 goto out_free_irqs;
4651
4652 }
4653
4654 return 0;
4655
4656 out_free_irqs:
4657 for (j = 0; j < i; j++) {
4658 struct niu_ldg *lp = &np->ldg[j];
4659
4660 free_irq(lp->irq, lp);
4661 }
4662 return err;
4663 }
4664
4665 static void niu_free_irq(struct niu *np)
4666 {
4667 int i;
4668
4669 for (i = 0; i < np->num_ldg; i++) {
4670 struct niu_ldg *lp = &np->ldg[i];
4671
4672 free_irq(lp->irq, lp);
4673 }
4674 }
4675
4676 static void niu_enable_napi(struct niu *np)
4677 {
4678 int i;
4679
4680 for (i = 0; i < np->num_ldg; i++)
4681 napi_enable(&np->ldg[i].napi);
4682 }
4683
4684 static void niu_disable_napi(struct niu *np)
4685 {
4686 int i;
4687
4688 for (i = 0; i < np->num_ldg; i++)
4689 napi_disable(&np->ldg[i].napi);
4690 }
4691
4692 static int niu_open(struct net_device *dev)
4693 {
4694 struct niu *np = netdev_priv(dev);
4695 int err;
4696
4697 netif_carrier_off(dev);
4698
4699 err = niu_alloc_channels(np);
4700 if (err)
4701 goto out_err;
4702
4703 err = niu_enable_interrupts(np, 0);
4704 if (err)
4705 goto out_free_channels;
4706
4707 err = niu_request_irq(np);
4708 if (err)
4709 goto out_free_channels;
4710
4711 niu_enable_napi(np);
4712
4713 spin_lock_irq(&np->lock);
4714
4715 err = niu_init_hw(np);
4716 if (!err) {
4717 init_timer(&np->timer);
4718 np->timer.expires = jiffies + HZ;
4719 np->timer.data = (unsigned long) np;
4720 np->timer.function = niu_timer;
4721
4722 err = niu_enable_interrupts(np, 1);
4723 if (err)
4724 niu_stop_hw(np);
4725 }
4726
4727 spin_unlock_irq(&np->lock);
4728
4729 if (err) {
4730 niu_disable_napi(np);
4731 goto out_free_irq;
4732 }
4733
4734 netif_start_queue(dev);
4735
4736 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
4737 netif_carrier_on(dev);
4738
4739 add_timer(&np->timer);
4740
4741 return 0;
4742
4743 out_free_irq:
4744 niu_free_irq(np);
4745
4746 out_free_channels:
4747 niu_free_channels(np);
4748
4749 out_err:
4750 return err;
4751 }
4752
4753 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
4754 {
4755 cancel_work_sync(&np->reset_task);
4756
4757 niu_disable_napi(np);
4758 netif_stop_queue(dev);
4759
4760 del_timer_sync(&np->timer);
4761
4762 spin_lock_irq(&np->lock);
4763
4764 niu_stop_hw(np);
4765
4766 spin_unlock_irq(&np->lock);
4767 }
4768
4769 static int niu_close(struct net_device *dev)
4770 {
4771 struct niu *np = netdev_priv(dev);
4772
4773 niu_full_shutdown(np, dev);
4774
4775 niu_free_irq(np);
4776
4777 niu_free_channels(np);
4778
4779 return 0;
4780 }
4781
4782 static void niu_sync_xmac_stats(struct niu *np)
4783 {
4784 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
4785
4786 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
4787 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
4788
4789 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
4790 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
4791 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
4792 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
4793 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
4794 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
4795 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
4796 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
4797 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
4798 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
4799 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
4800 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
4801 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
4802 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
4803 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
4804 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
4805 }
4806
4807 static void niu_sync_bmac_stats(struct niu *np)
4808 {
4809 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4810
4811 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
4812 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
4813
4814 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
4815 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4816 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
4817 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
4818 }
4819
4820 static void niu_sync_mac_stats(struct niu *np)
4821 {
4822 if (np->flags & NIU_FLAGS_XMAC)
4823 niu_sync_xmac_stats(np);
4824 else
4825 niu_sync_bmac_stats(np);
4826 }
4827
4828 static void niu_get_rx_stats(struct niu *np)
4829 {
4830 unsigned long pkts, dropped, errors, bytes;
4831 int i;
4832
4833 pkts = dropped = errors = bytes = 0;
4834 for (i = 0; i < np->num_rx_rings; i++) {
4835 struct rx_ring_info *rp = &np->rx_rings[i];
4836
4837 pkts += rp->rx_packets;
4838 bytes += rp->rx_bytes;
4839 dropped += rp->rx_dropped;
4840 errors += rp->rx_errors;
4841 }
4842 np->net_stats.rx_packets = pkts;
4843 np->net_stats.rx_bytes = bytes;
4844 np->net_stats.rx_dropped = dropped;
4845 np->net_stats.rx_errors = errors;
4846 }
4847
4848 static void niu_get_tx_stats(struct niu *np)
4849 {
4850 unsigned long pkts, errors, bytes;
4851 int i;
4852
4853 pkts = errors = bytes = 0;
4854 for (i = 0; i < np->num_tx_rings; i++) {
4855 struct tx_ring_info *rp = &np->tx_rings[i];
4856
4857 pkts += rp->tx_packets;
4858 bytes += rp->tx_bytes;
4859 errors += rp->tx_errors;
4860 }
4861 np->net_stats.tx_packets = pkts;
4862 np->net_stats.tx_bytes = bytes;
4863 np->net_stats.tx_errors = errors;
4864 }
4865
4866 static struct net_device_stats *niu_get_stats(struct net_device *dev)
4867 {
4868 struct niu *np = netdev_priv(dev);
4869
4870 niu_get_rx_stats(np);
4871 niu_get_tx_stats(np);
4872
4873 return &np->net_stats;
4874 }
4875
4876 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
4877 {
4878 int i;
4879
4880 for (i = 0; i < 16; i++)
4881 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
4882 }
4883
4884 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
4885 {
4886 int i;
4887
4888 for (i = 0; i < 16; i++)
4889 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
4890 }
4891
4892 static void niu_load_hash(struct niu *np, u16 *hash)
4893 {
4894 if (np->flags & NIU_FLAGS_XMAC)
4895 niu_load_hash_xmac(np, hash);
4896 else
4897 niu_load_hash_bmac(np, hash);
4898 }
4899
4900 static void niu_set_rx_mode(struct net_device *dev)
4901 {
4902 struct niu *np = netdev_priv(dev);
4903 int i, alt_cnt, err;
4904 struct dev_addr_list *addr;
4905 unsigned long flags;
4906 u16 hash[16] = { 0, };
4907
4908 spin_lock_irqsave(&np->lock, flags);
4909 niu_enable_rx_mac(np, 0);
4910
4911 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
4912 if (dev->flags & IFF_PROMISC)
4913 np->flags |= NIU_FLAGS_PROMISC;
4914 if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
4915 np->flags |= NIU_FLAGS_MCAST;
4916
4917 alt_cnt = dev->uc_count;
4918 if (alt_cnt > niu_num_alt_addr(np)) {
4919 alt_cnt = 0;
4920 np->flags |= NIU_FLAGS_PROMISC;
4921 }
4922
4923 if (alt_cnt) {
4924 int index = 0;
4925
4926 for (addr = dev->uc_list; addr; addr = addr->next) {
4927 err = niu_set_alt_mac(np, index,
4928 addr->da_addr);
4929 if (err)
4930 printk(KERN_WARNING PFX "%s: Error %d "
4931 "adding alt mac %d\n",
4932 dev->name, err, index);
4933 err = niu_enable_alt_mac(np, index, 1);
4934 if (err)
4935 printk(KERN_WARNING PFX "%s: Error %d "
4936 "enabling alt mac %d\n",
4937 dev->name, err, index);
4938
4939 index++;
4940 }
4941 } else {
4942 for (i = 0; i < niu_num_alt_addr(np); i++) {
4943 err = niu_enable_alt_mac(np, i, 0);
4944 if (err)
4945 printk(KERN_WARNING PFX "%s: Error %d "
4946 "disabling alt mac %d\n",
4947 dev->name, err, i);
4948 }
4949 }
4950 if (dev->flags & IFF_ALLMULTI) {
4951 for (i = 0; i < 16; i++)
4952 hash[i] = 0xffff;
4953 } else if (dev->mc_count > 0) {
4954 for (addr = dev->mc_list; addr; addr = addr->next) {
4955 u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
4956
4957 crc >>= 24;
4958 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
4959 }
4960 }
4961
4962 if (np->flags & NIU_FLAGS_MCAST)
4963 niu_load_hash(np, hash);
4964
4965 niu_enable_rx_mac(np, 1);
4966 spin_unlock_irqrestore(&np->lock, flags);
4967 }
4968
4969 static int niu_set_mac_addr(struct net_device *dev, void *p)
4970 {
4971 struct niu *np = netdev_priv(dev);
4972 struct sockaddr *addr = p;
4973 unsigned long flags;
4974
4975 if (!is_valid_ether_addr(addr->sa_data))
4976 return -EINVAL;
4977
4978 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
4979
4980 if (!netif_running(dev))
4981 return 0;
4982
4983 spin_lock_irqsave(&np->lock, flags);
4984 niu_enable_rx_mac(np, 0);
4985 niu_set_primary_mac(np, dev->dev_addr);
4986 niu_enable_rx_mac(np, 1);
4987 spin_unlock_irqrestore(&np->lock, flags);
4988
4989 return 0;
4990 }
4991
4992 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
4993 {
4994 return -EOPNOTSUPP;
4995 }
4996
4997 static void niu_netif_stop(struct niu *np)
4998 {
4999 np->dev->trans_start = jiffies; /* prevent tx timeout */
5000
5001 niu_disable_napi(np);
5002
5003 netif_tx_disable(np->dev);
5004 }
5005
5006 static void niu_netif_start(struct niu *np)
5007 {
5008 /* NOTE: unconditional netif_wake_queue is only appropriate
5009 * so long as all callers are assured to have free tx slots
5010 * (such as after niu_init_hw).
5011 */
5012 netif_wake_queue(np->dev);
5013
5014 niu_enable_napi(np);
5015
5016 niu_enable_interrupts(np, 1);
5017 }
5018
5019 static void niu_reset_task(struct work_struct *work)
5020 {
5021 struct niu *np = container_of(work, struct niu, reset_task);
5022 unsigned long flags;
5023 int err;
5024
5025 spin_lock_irqsave(&np->lock, flags);
5026 if (!netif_running(np->dev)) {
5027 spin_unlock_irqrestore(&np->lock, flags);
5028 return;
5029 }
5030
5031 spin_unlock_irqrestore(&np->lock, flags);
5032
5033 del_timer_sync(&np->timer);
5034
5035 niu_netif_stop(np);
5036
5037 spin_lock_irqsave(&np->lock, flags);
5038
5039 niu_stop_hw(np);
5040
5041 err = niu_init_hw(np);
5042 if (!err) {
5043 np->timer.expires = jiffies + HZ;
5044 add_timer(&np->timer);
5045 niu_netif_start(np);
5046 }
5047
5048 spin_unlock_irqrestore(&np->lock, flags);
5049 }
5050
5051 static void niu_tx_timeout(struct net_device *dev)
5052 {
5053 struct niu *np = netdev_priv(dev);
5054
5055 dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
5056 dev->name);
5057
5058 schedule_work(&np->reset_task);
5059 }
5060
5061 static void niu_set_txd(struct tx_ring_info *rp, int index,
5062 u64 mapping, u64 len, u64 mark,
5063 u64 n_frags)
5064 {
5065 __le64 *desc = &rp->descr[index];
5066
5067 *desc = cpu_to_le64(mark |
5068 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
5069 (len << TX_DESC_TR_LEN_SHIFT) |
5070 (mapping & TX_DESC_SAD));
5071 }
5072
5073 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
5074 u64 pad_bytes, u64 len)
5075 {
5076 u16 eth_proto, eth_proto_inner;
5077 u64 csum_bits, l3off, ihl, ret;
5078 u8 ip_proto;
5079 int ipv6;
5080
5081 eth_proto = be16_to_cpu(ehdr->h_proto);
5082 eth_proto_inner = eth_proto;
5083 if (eth_proto == ETH_P_8021Q) {
5084 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
5085 __be16 val = vp->h_vlan_encapsulated_proto;
5086
5087 eth_proto_inner = be16_to_cpu(val);
5088 }
5089
5090 ipv6 = ihl = 0;
5091 switch (skb->protocol) {
5092 case __constant_htons(ETH_P_IP):
5093 ip_proto = ip_hdr(skb)->protocol;
5094 ihl = ip_hdr(skb)->ihl;
5095 break;
5096 case __constant_htons(ETH_P_IPV6):
5097 ip_proto = ipv6_hdr(skb)->nexthdr;
5098 ihl = (40 >> 2);
5099 ipv6 = 1;
5100 break;
5101 default:
5102 ip_proto = ihl = 0;
5103 break;
5104 }
5105
5106 csum_bits = TXHDR_CSUM_NONE;
5107 if (skb->ip_summed == CHECKSUM_PARTIAL) {
5108 u64 start, stuff;
5109
5110 csum_bits = (ip_proto == IPPROTO_TCP ?
5111 TXHDR_CSUM_TCP :
5112 (ip_proto == IPPROTO_UDP ?
5113 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
5114
5115 start = skb_transport_offset(skb) -
5116 (pad_bytes + sizeof(struct tx_pkt_hdr));
5117 stuff = start + skb->csum_offset;
5118
5119 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
5120 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
5121 }
5122
5123 l3off = skb_network_offset(skb) -
5124 (pad_bytes + sizeof(struct tx_pkt_hdr));
5125
5126 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
5127 (len << TXHDR_LEN_SHIFT) |
5128 ((l3off / 2) << TXHDR_L3START_SHIFT) |
5129 (ihl << TXHDR_IHL_SHIFT) |
5130 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
5131 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
5132 (ipv6 ? TXHDR_IP_VER : 0) |
5133 csum_bits);
5134
5135 return ret;
5136 }
5137
5138 static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
5139 {
5140 return &np->tx_rings[0];
5141 }
5142
5143 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
5144 {
5145 struct niu *np = netdev_priv(dev);
5146 unsigned long align, headroom;
5147 struct tx_ring_info *rp;
5148 struct tx_pkt_hdr *tp;
5149 unsigned int len, nfg;
5150 struct ethhdr *ehdr;
5151 int prod, i, tlen;
5152 u64 mapping, mrk;
5153
5154 rp = tx_ring_select(np, skb);
5155
5156 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
5157 netif_stop_queue(dev);
5158 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
5159 "queue awake!\n", dev->name);
5160 rp->tx_errors++;
5161 return NETDEV_TX_BUSY;
5162 }
5163
5164 if (skb->len < ETH_ZLEN) {
5165 unsigned int pad_bytes = ETH_ZLEN - skb->len;
5166
5167 if (skb_pad(skb, pad_bytes))
5168 goto out;
5169 skb_put(skb, pad_bytes);
5170 }
5171
5172 len = sizeof(struct tx_pkt_hdr) + 15;
5173 if (skb_headroom(skb) < len) {
5174 struct sk_buff *skb_new;
5175
5176 skb_new = skb_realloc_headroom(skb, len);
5177 if (!skb_new) {
5178 rp->tx_errors++;
5179 goto out_drop;
5180 }
5181 kfree_skb(skb);
5182 skb = skb_new;
5183 }
5184
5185 align = ((unsigned long) skb->data & (16 - 1));
5186 headroom = align + sizeof(struct tx_pkt_hdr);
5187
5188 ehdr = (struct ethhdr *) skb->data;
5189 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
5190
5191 len = skb->len - sizeof(struct tx_pkt_hdr);
5192 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
5193 tp->resv = 0;
5194
5195 len = skb_headlen(skb);
5196 mapping = np->ops->map_single(np->device, skb->data,
5197 len, DMA_TO_DEVICE);
5198
5199 prod = rp->prod;
5200
5201 rp->tx_buffs[prod].skb = skb;
5202 rp->tx_buffs[prod].mapping = mapping;
5203
5204 mrk = TX_DESC_SOP;
5205 if (++rp->mark_counter == rp->mark_freq) {
5206 rp->mark_counter = 0;
5207 mrk |= TX_DESC_MARK;
5208 rp->mark_pending++;
5209 }
5210
5211 tlen = len;
5212 nfg = skb_shinfo(skb)->nr_frags;
5213 while (tlen > 0) {
5214 tlen -= MAX_TX_DESC_LEN;
5215 nfg++;
5216 }
5217
5218 while (len > 0) {
5219 unsigned int this_len = len;
5220
5221 if (this_len > MAX_TX_DESC_LEN)
5222 this_len = MAX_TX_DESC_LEN;
5223
5224 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
5225 mrk = nfg = 0;
5226
5227 prod = NEXT_TX(rp, prod);
5228 mapping += this_len;
5229 len -= this_len;
5230 }
5231
5232 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
5233 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
5234
5235 len = frag->size;
5236 mapping = np->ops->map_page(np->device, frag->page,
5237 frag->page_offset, len,
5238 DMA_TO_DEVICE);
5239
5240 rp->tx_buffs[prod].skb = NULL;
5241 rp->tx_buffs[prod].mapping = mapping;
5242
5243 niu_set_txd(rp, prod, mapping, len, 0, 0);
5244
5245 prod = NEXT_TX(rp, prod);
5246 }
5247
5248 if (prod < rp->prod)
5249 rp->wrap_bit ^= TX_RING_KICK_WRAP;
5250 rp->prod = prod;
5251
5252 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
5253
5254 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
5255 netif_stop_queue(dev);
5256 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
5257 netif_wake_queue(dev);
5258 }
5259
5260 dev->trans_start = jiffies;
5261
5262 out:
5263 return NETDEV_TX_OK;
5264
5265 out_drop:
5266 rp->tx_errors++;
5267 kfree_skb(skb);
5268 goto out;
5269 }
5270
5271 static int niu_change_mtu(struct net_device *dev, int new_mtu)
5272 {
5273 struct niu *np = netdev_priv(dev);
5274 int err, orig_jumbo, new_jumbo;
5275
5276 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
5277 return -EINVAL;
5278
5279 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
5280 new_jumbo = (new_mtu > ETH_DATA_LEN);
5281
5282 dev->mtu = new_mtu;
5283
5284 if (!netif_running(dev) ||
5285 (orig_jumbo == new_jumbo))
5286 return 0;
5287
5288 niu_full_shutdown(np, dev);
5289
5290 niu_free_channels(np);
5291
5292 niu_enable_napi(np);
5293
5294 err = niu_alloc_channels(np);
5295 if (err)
5296 return err;
5297
5298 spin_lock_irq(&np->lock);
5299
5300 err = niu_init_hw(np);
5301 if (!err) {
5302 init_timer(&np->timer);
5303 np->timer.expires = jiffies + HZ;
5304 np->timer.data = (unsigned long) np;
5305 np->timer.function = niu_timer;
5306
5307 err = niu_enable_interrupts(np, 1);
5308 if (err)
5309 niu_stop_hw(np);
5310 }
5311
5312 spin_unlock_irq(&np->lock);
5313
5314 if (!err) {
5315 netif_start_queue(dev);
5316 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
5317 netif_carrier_on(dev);
5318
5319 add_timer(&np->timer);
5320 }
5321
5322 return err;
5323 }
5324
5325 static void niu_get_drvinfo(struct net_device *dev,
5326 struct ethtool_drvinfo *info)
5327 {
5328 struct niu *np = netdev_priv(dev);
5329 struct niu_vpd *vpd = &np->vpd;
5330
5331 strcpy(info->driver, DRV_MODULE_NAME);
5332 strcpy(info->version, DRV_MODULE_VERSION);
5333 sprintf(info->fw_version, "%d.%d",
5334 vpd->fcode_major, vpd->fcode_minor);
5335 if (np->parent->plat_type != PLAT_TYPE_NIU)
5336 strcpy(info->bus_info, pci_name(np->pdev));
5337 }
5338
5339 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5340 {
5341 struct niu *np = netdev_priv(dev);
5342 struct niu_link_config *lp;
5343
5344 lp = &np->link_config;
5345
5346 memset(cmd, 0, sizeof(*cmd));
5347 cmd->phy_address = np->phy_addr;
5348 cmd->supported = lp->supported;
5349 cmd->advertising = lp->advertising;
5350 cmd->autoneg = lp->autoneg;
5351 cmd->speed = lp->active_speed;
5352 cmd->duplex = lp->active_duplex;
5353
5354 return 0;
5355 }
5356
5357 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
5358 {
5359 return -EINVAL;
5360 }
5361
5362 static u32 niu_get_msglevel(struct net_device *dev)
5363 {
5364 struct niu *np = netdev_priv(dev);
5365 return np->msg_enable;
5366 }
5367
5368 static void niu_set_msglevel(struct net_device *dev, u32 value)
5369 {
5370 struct niu *np = netdev_priv(dev);
5371 np->msg_enable = value;
5372 }
5373
5374 static int niu_get_eeprom_len(struct net_device *dev)
5375 {
5376 struct niu *np = netdev_priv(dev);
5377
5378 return np->eeprom_len;
5379 }
5380
5381 static int niu_get_eeprom(struct net_device *dev,
5382 struct ethtool_eeprom *eeprom, u8 *data)
5383 {
5384 struct niu *np = netdev_priv(dev);
5385 u32 offset, len, val;
5386
5387 offset = eeprom->offset;
5388 len = eeprom->len;
5389
5390 if (offset + len < offset)
5391 return -EINVAL;
5392 if (offset >= np->eeprom_len)
5393 return -EINVAL;
5394 if (offset + len > np->eeprom_len)
5395 len = eeprom->len = np->eeprom_len - offset;
5396
5397 if (offset & 3) {
5398 u32 b_offset, b_count;
5399
5400 b_offset = offset & 3;
5401 b_count = 4 - b_offset;
5402 if (b_count > len)
5403 b_count = len;
5404
5405 val = nr64(ESPC_NCR((offset - b_offset) / 4));
5406 memcpy(data, ((char *)&val) + b_offset, b_count);
5407 data += b_count;
5408 len -= b_count;
5409 offset += b_count;
5410 }
5411 while (len >= 4) {
5412 val = nr64(ESPC_NCR(offset / 4));
5413 memcpy(data, &val, 4);
5414 data += 4;
5415 len -= 4;
5416 offset += 4;
5417 }
5418 if (len) {
5419 val = nr64(ESPC_NCR(offset / 4));
5420 memcpy(data, &val, len);
5421 }
5422 return 0;
5423 }
5424
5425 static const struct {
5426 const char string[ETH_GSTRING_LEN];
5427 } niu_xmac_stat_keys[] = {
5428 { "tx_frames" },
5429 { "tx_bytes" },
5430 { "tx_fifo_errors" },
5431 { "tx_overflow_errors" },
5432 { "tx_max_pkt_size_errors" },
5433 { "tx_underflow_errors" },
5434 { "rx_local_faults" },
5435 { "rx_remote_faults" },
5436 { "rx_link_faults" },
5437 { "rx_align_errors" },
5438 { "rx_frags" },
5439 { "rx_mcasts" },
5440 { "rx_bcasts" },
5441 { "rx_hist_cnt1" },
5442 { "rx_hist_cnt2" },
5443 { "rx_hist_cnt3" },
5444 { "rx_hist_cnt4" },
5445 { "rx_hist_cnt5" },
5446 { "rx_hist_cnt6" },
5447 { "rx_hist_cnt7" },
5448 { "rx_octets" },
5449 { "rx_code_violations" },
5450 { "rx_len_errors" },
5451 { "rx_crc_errors" },
5452 { "rx_underflows" },
5453 { "rx_overflows" },
5454 { "pause_off_state" },
5455 { "pause_on_state" },
5456 { "pause_received" },
5457 };
5458
5459 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
5460
5461 static const struct {
5462 const char string[ETH_GSTRING_LEN];
5463 } niu_bmac_stat_keys[] = {
5464 { "tx_underflow_errors" },
5465 { "tx_max_pkt_size_errors" },
5466 { "tx_bytes" },
5467 { "tx_frames" },
5468 { "rx_overflows" },
5469 { "rx_frames" },
5470 { "rx_align_errors" },
5471 { "rx_crc_errors" },
5472 { "rx_len_errors" },
5473 { "pause_off_state" },
5474 { "pause_on_state" },
5475 { "pause_received" },
5476 };
5477
5478 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
5479
5480 static const struct {
5481 const char string[ETH_GSTRING_LEN];
5482 } niu_rxchan_stat_keys[] = {
5483 { "rx_channel" },
5484 { "rx_packets" },
5485 { "rx_bytes" },
5486 { "rx_dropped" },
5487 { "rx_errors" },
5488 };
5489
5490 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
5491
5492 static const struct {
5493 const char string[ETH_GSTRING_LEN];
5494 } niu_txchan_stat_keys[] = {
5495 { "tx_channel" },
5496 { "tx_packets" },
5497 { "tx_bytes" },
5498 { "tx_errors" },
5499 };
5500
5501 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
5502
5503 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5504 {
5505 struct niu *np = netdev_priv(dev);
5506 int i;
5507
5508 if (stringset != ETH_SS_STATS)
5509 return;
5510
5511 if (np->flags & NIU_FLAGS_XMAC) {
5512 memcpy(data, niu_xmac_stat_keys,
5513 sizeof(niu_xmac_stat_keys));
5514 data += sizeof(niu_xmac_stat_keys);
5515 } else {
5516 memcpy(data, niu_bmac_stat_keys,
5517 sizeof(niu_bmac_stat_keys));
5518 data += sizeof(niu_bmac_stat_keys);
5519 }
5520 for (i = 0; i < np->num_rx_rings; i++) {
5521 memcpy(data, niu_rxchan_stat_keys,
5522 sizeof(niu_rxchan_stat_keys));
5523 data += sizeof(niu_rxchan_stat_keys);
5524 }
5525 for (i = 0; i < np->num_tx_rings; i++) {
5526 memcpy(data, niu_txchan_stat_keys,
5527 sizeof(niu_txchan_stat_keys));
5528 data += sizeof(niu_txchan_stat_keys);
5529 }
5530 }
5531
5532 static int niu_get_stats_count(struct net_device *dev)
5533 {
5534 struct niu *np = netdev_priv(dev);
5535
5536 return ((np->flags & NIU_FLAGS_XMAC ?
5537 NUM_XMAC_STAT_KEYS :
5538 NUM_BMAC_STAT_KEYS) +
5539 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
5540 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
5541 }
5542
5543 static void niu_get_ethtool_stats(struct net_device *dev,
5544 struct ethtool_stats *stats, u64 *data)
5545 {
5546 struct niu *np = netdev_priv(dev);
5547 int i;
5548
5549 niu_sync_mac_stats(np);
5550 if (np->flags & NIU_FLAGS_XMAC) {
5551 memcpy(data, &np->mac_stats.xmac,
5552 sizeof(struct niu_xmac_stats));
5553 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
5554 } else {
5555 memcpy(data, &np->mac_stats.bmac,
5556 sizeof(struct niu_bmac_stats));
5557 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
5558 }
5559 for (i = 0; i < np->num_rx_rings; i++) {
5560 struct rx_ring_info *rp = &np->rx_rings[i];
5561
5562 data[0] = rp->rx_channel;
5563 data[1] = rp->rx_packets;
5564 data[2] = rp->rx_bytes;
5565 data[3] = rp->rx_dropped;
5566 data[4] = rp->rx_errors;
5567 data += 5;
5568 }
5569 for (i = 0; i < np->num_tx_rings; i++) {
5570 struct tx_ring_info *rp = &np->tx_rings[i];
5571
5572 data[0] = rp->tx_channel;
5573 data[1] = rp->tx_packets;
5574 data[2] = rp->tx_bytes;
5575 data[3] = rp->tx_errors;
5576 data += 4;
5577 }
5578 }
5579
5580 static u64 niu_led_state_save(struct niu *np)
5581 {
5582 if (np->flags & NIU_FLAGS_XMAC)
5583 return nr64_mac(XMAC_CONFIG);
5584 else
5585 return nr64_mac(BMAC_XIF_CONFIG);
5586 }
5587
5588 static void niu_led_state_restore(struct niu *np, u64 val)
5589 {
5590 if (np->flags & NIU_FLAGS_XMAC)
5591 nw64_mac(XMAC_CONFIG, val);
5592 else
5593 nw64_mac(BMAC_XIF_CONFIG, val);
5594 }
5595
5596 static void niu_force_led(struct niu *np, int on)
5597 {
5598 u64 val, reg, bit;
5599
5600 if (np->flags & NIU_FLAGS_XMAC) {
5601 reg = XMAC_CONFIG;
5602 bit = XMAC_CONFIG_FORCE_LED_ON;
5603 } else {
5604 reg = BMAC_XIF_CONFIG;
5605 bit = BMAC_XIF_CONFIG_LINK_LED;
5606 }
5607
5608 val = nr64_mac(reg);
5609 if (on)
5610 val |= bit;
5611 else
5612 val &= ~bit;
5613 nw64_mac(reg, val);
5614 }
5615
5616 static int niu_phys_id(struct net_device *dev, u32 data)
5617 {
5618 struct niu *np = netdev_priv(dev);
5619 u64 orig_led_state;
5620 int i;
5621
5622 if (!netif_running(dev))
5623 return -EAGAIN;
5624
5625 if (data == 0)
5626 data = 2;
5627
5628 orig_led_state = niu_led_state_save(np);
5629 for (i = 0; i < (data * 2); i++) {
5630 int on = ((i % 2) == 0);
5631
5632 niu_force_led(np, on);
5633
5634 if (msleep_interruptible(500))
5635 break;
5636 }
5637 niu_led_state_restore(np, orig_led_state);
5638
5639 return 0;
5640 }
5641
5642 static const struct ethtool_ops niu_ethtool_ops = {
5643 .get_drvinfo = niu_get_drvinfo,
5644 .get_link = ethtool_op_get_link,
5645 .get_msglevel = niu_get_msglevel,
5646 .set_msglevel = niu_set_msglevel,
5647 .get_eeprom_len = niu_get_eeprom_len,
5648 .get_eeprom = niu_get_eeprom,
5649 .get_settings = niu_get_settings,
5650 .set_settings = niu_set_settings,
5651 .get_strings = niu_get_strings,
5652 .get_stats_count = niu_get_stats_count,
5653 .get_ethtool_stats = niu_get_ethtool_stats,
5654 .phys_id = niu_phys_id,
5655 };
5656
5657 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
5658 int ldg, int ldn)
5659 {
5660 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
5661 return -EINVAL;
5662 if (ldn < 0 || ldn > LDN_MAX)
5663 return -EINVAL;
5664
5665 parent->ldg_map[ldn] = ldg;
5666
5667 if (np->parent->plat_type == PLAT_TYPE_NIU) {
5668 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
5669 * the firmware, and we're not supposed to change them.
5670 * Validate the mapping, because if it's wrong we probably
5671 * won't get any interrupts and that's painful to debug.
5672 */
5673 if (nr64(LDG_NUM(ldn)) != ldg) {
5674 dev_err(np->device, PFX "Port %u, mis-matched "
5675 "LDG assignment "
5676 "for ldn %d, should be %d is %llu\n",
5677 np->port, ldn, ldg,
5678 (unsigned long long) nr64(LDG_NUM(ldn)));
5679 return -EINVAL;
5680 }
5681 } else
5682 nw64(LDG_NUM(ldn), ldg);
5683
5684 return 0;
5685 }
5686
5687 static int niu_set_ldg_timer_res(struct niu *np, int res)
5688 {
5689 if (res < 0 || res > LDG_TIMER_RES_VAL)
5690 return -EINVAL;
5691
5692
5693 nw64(LDG_TIMER_RES, res);
5694
5695 return 0;
5696 }
5697
5698 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
5699 {
5700 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
5701 (func < 0 || func > 3) ||
5702 (vector < 0 || vector > 0x1f))
5703 return -EINVAL;
5704
5705 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
5706
5707 return 0;
5708 }
5709
5710 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
5711 {
5712 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
5713 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
5714 int limit;
5715
5716 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
5717 return -EINVAL;
5718
5719 frame = frame_base;
5720 nw64(ESPC_PIO_STAT, frame);
5721 limit = 64;
5722 do {
5723 udelay(5);
5724 frame = nr64(ESPC_PIO_STAT);
5725 if (frame & ESPC_PIO_STAT_READ_END)
5726 break;
5727 } while (limit--);
5728 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5729 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5730 (unsigned long long) frame);
5731 return -ENODEV;
5732 }
5733
5734 frame = frame_base;
5735 nw64(ESPC_PIO_STAT, frame);
5736 limit = 64;
5737 do {
5738 udelay(5);
5739 frame = nr64(ESPC_PIO_STAT);
5740 if (frame & ESPC_PIO_STAT_READ_END)
5741 break;
5742 } while (limit--);
5743 if (!(frame & ESPC_PIO_STAT_READ_END)) {
5744 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
5745 (unsigned long long) frame);
5746 return -ENODEV;
5747 }
5748
5749 frame = nr64(ESPC_PIO_STAT);
5750 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
5751 }
5752
5753 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
5754 {
5755 int err = niu_pci_eeprom_read(np, off);
5756 u16 val;
5757
5758 if (err < 0)
5759 return err;
5760 val = (err << 8);
5761 err = niu_pci_eeprom_read(np, off + 1);
5762 if (err < 0)
5763 return err;
5764 val |= (err & 0xff);
5765
5766 return val;
5767 }
5768
5769 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
5770 {
5771 int err = niu_pci_eeprom_read(np, off);
5772 u16 val;
5773
5774 if (err < 0)
5775 return err;
5776
5777 val = (err & 0xff);
5778 err = niu_pci_eeprom_read(np, off + 1);
5779 if (err < 0)
5780 return err;
5781
5782 val |= (err & 0xff) << 8;
5783
5784 return val;
5785 }
5786
5787 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
5788 u32 off,
5789 char *namebuf,
5790 int namebuf_len)
5791 {
5792 int i;
5793
5794 for (i = 0; i < namebuf_len; i++) {
5795 int err = niu_pci_eeprom_read(np, off + i);
5796 if (err < 0)
5797 return err;
5798 *namebuf++ = err;
5799 if (!err)
5800 break;
5801 }
5802 if (i >= namebuf_len)
5803 return -EINVAL;
5804
5805 return i + 1;
5806 }
5807
5808 static void __devinit niu_vpd_parse_version(struct niu *np)
5809 {
5810 struct niu_vpd *vpd = &np->vpd;
5811 int len = strlen(vpd->version) + 1;
5812 const char *s = vpd->version;
5813 int i;
5814
5815 for (i = 0; i < len - 5; i++) {
5816 if (!strncmp(s + i, "FCode ", 5))
5817 break;
5818 }
5819 if (i >= len - 5)
5820 return;
5821
5822 s += i + 5;
5823 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
5824
5825 niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
5826 vpd->fcode_major, vpd->fcode_minor);
5827 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
5828 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
5829 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
5830 np->flags |= NIU_FLAGS_VPD_VALID;
5831 }
5832
5833 /* ESPC_PIO_EN_ENABLE must be set */
5834 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
5835 u32 start, u32 end)
5836 {
5837 unsigned int found_mask = 0;
5838 #define FOUND_MASK_MODEL 0x00000001
5839 #define FOUND_MASK_BMODEL 0x00000002
5840 #define FOUND_MASK_VERS 0x00000004
5841 #define FOUND_MASK_MAC 0x00000008
5842 #define FOUND_MASK_NMAC 0x00000010
5843 #define FOUND_MASK_PHY 0x00000020
5844 #define FOUND_MASK_ALL 0x0000003f
5845
5846 niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
5847 start, end);
5848 while (start < end) {
5849 int len, err, instance, type, prop_len;
5850 char namebuf[64];
5851 u8 *prop_buf;
5852 int max_len;
5853
5854 if (found_mask == FOUND_MASK_ALL) {
5855 niu_vpd_parse_version(np);
5856 return 1;
5857 }
5858
5859 err = niu_pci_eeprom_read(np, start + 2);
5860 if (err < 0)
5861 return err;
5862 len = err;
5863 start += 3;
5864
5865 instance = niu_pci_eeprom_read(np, start);
5866 type = niu_pci_eeprom_read(np, start + 3);
5867 prop_len = niu_pci_eeprom_read(np, start + 4);
5868 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
5869 if (err < 0)
5870 return err;
5871
5872 prop_buf = NULL;
5873 max_len = 0;
5874 if (!strcmp(namebuf, "model")) {
5875 prop_buf = np->vpd.model;
5876 max_len = NIU_VPD_MODEL_MAX;
5877 found_mask |= FOUND_MASK_MODEL;
5878 } else if (!strcmp(namebuf, "board-model")) {
5879 prop_buf = np->vpd.board_model;
5880 max_len = NIU_VPD_BD_MODEL_MAX;
5881 found_mask |= FOUND_MASK_BMODEL;
5882 } else if (!strcmp(namebuf, "version")) {
5883 prop_buf = np->vpd.version;
5884 max_len = NIU_VPD_VERSION_MAX;
5885 found_mask |= FOUND_MASK_VERS;
5886 } else if (!strcmp(namebuf, "local-mac-address")) {
5887 prop_buf = np->vpd.local_mac;
5888 max_len = ETH_ALEN;
5889 found_mask |= FOUND_MASK_MAC;
5890 } else if (!strcmp(namebuf, "num-mac-addresses")) {
5891 prop_buf = &np->vpd.mac_num;
5892 max_len = 1;
5893 found_mask |= FOUND_MASK_NMAC;
5894 } else if (!strcmp(namebuf, "phy-type")) {
5895 prop_buf = np->vpd.phy_type;
5896 max_len = NIU_VPD_PHY_TYPE_MAX;
5897 found_mask |= FOUND_MASK_PHY;
5898 }
5899
5900 if (max_len && prop_len > max_len) {
5901 dev_err(np->device, PFX "Property '%s' length (%d) is "
5902 "too long.\n", namebuf, prop_len);
5903 return -EINVAL;
5904 }
5905
5906 if (prop_buf) {
5907 u32 off = start + 5 + err;
5908 int i;
5909
5910 niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
5911 "len[%d]\n", namebuf, prop_len);
5912 for (i = 0; i < prop_len; i++)
5913 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
5914 }
5915
5916 start += len;
5917 }
5918
5919 return 0;
5920 }
5921
5922 /* ESPC_PIO_EN_ENABLE must be set */
5923 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
5924 {
5925 u32 offset;
5926 int err;
5927
5928 err = niu_pci_eeprom_read16_swp(np, start + 1);
5929 if (err < 0)
5930 return;
5931
5932 offset = err + 3;
5933
5934 while (start + offset < ESPC_EEPROM_SIZE) {
5935 u32 here = start + offset;
5936 u32 end;
5937
5938 err = niu_pci_eeprom_read(np, here);
5939 if (err != 0x90)
5940 return;
5941
5942 err = niu_pci_eeprom_read16_swp(np, here + 1);
5943 if (err < 0)
5944 return;
5945
5946 here = start + offset + 3;
5947 end = start + offset + err;
5948
5949 offset += err;
5950
5951 err = niu_pci_vpd_scan_props(np, here, end);
5952 if (err < 0 || err == 1)
5953 return;
5954 }
5955 }
5956
5957 /* ESPC_PIO_EN_ENABLE must be set */
5958 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
5959 {
5960 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
5961 int err;
5962
5963 while (start < end) {
5964 ret = start;
5965
5966 /* ROM header signature? */
5967 err = niu_pci_eeprom_read16(np, start + 0);
5968 if (err != 0x55aa)
5969 return 0;
5970
5971 /* Apply offset to PCI data structure. */
5972 err = niu_pci_eeprom_read16(np, start + 23);
5973 if (err < 0)
5974 return 0;
5975 start += err;
5976
5977 /* Check for "PCIR" signature. */
5978 err = niu_pci_eeprom_read16(np, start + 0);
5979 if (err != 0x5043)
5980 return 0;
5981 err = niu_pci_eeprom_read16(np, start + 2);
5982 if (err != 0x4952)
5983 return 0;
5984
5985 /* Check for OBP image type. */
5986 err = niu_pci_eeprom_read(np, start + 20);
5987 if (err < 0)
5988 return 0;
5989 if (err != 0x01) {
5990 err = niu_pci_eeprom_read(np, ret + 2);
5991 if (err < 0)
5992 return 0;
5993
5994 start = ret + (err * 512);
5995 continue;
5996 }
5997
5998 err = niu_pci_eeprom_read16_swp(np, start + 8);
5999 if (err < 0)
6000 return err;
6001 ret += err;
6002
6003 err = niu_pci_eeprom_read(np, ret + 0);
6004 if (err != 0x82)
6005 return 0;
6006
6007 return ret;
6008 }
6009
6010 return 0;
6011 }
6012
6013 static int __devinit niu_phy_type_prop_decode(struct niu *np,
6014 const char *phy_prop)
6015 {
6016 if (!strcmp(phy_prop, "mif")) {
6017 /* 1G copper, MII */
6018 np->flags &= ~(NIU_FLAGS_FIBER |
6019 NIU_FLAGS_10G);
6020 np->mac_xcvr = MAC_XCVR_MII;
6021 } else if (!strcmp(phy_prop, "xgf")) {
6022 /* 10G fiber, XPCS */
6023 np->flags |= (NIU_FLAGS_10G |
6024 NIU_FLAGS_FIBER);
6025 np->mac_xcvr = MAC_XCVR_XPCS;
6026 } else if (!strcmp(phy_prop, "pcs")) {
6027 /* 1G fiber, PCS */
6028 np->flags &= ~NIU_FLAGS_10G;
6029 np->flags |= NIU_FLAGS_FIBER;
6030 np->mac_xcvr = MAC_XCVR_PCS;
6031 } else if (!strcmp(phy_prop, "xgc")) {
6032 /* 10G copper, XPCS */
6033 np->flags |= NIU_FLAGS_10G;
6034 np->flags &= ~NIU_FLAGS_FIBER;
6035 np->mac_xcvr = MAC_XCVR_XPCS;
6036 } else {
6037 return -EINVAL;
6038 }
6039 return 0;
6040 }
6041
6042 static void __devinit niu_pci_vpd_validate(struct niu *np)
6043 {
6044 struct net_device *dev = np->dev;
6045 struct niu_vpd *vpd = &np->vpd;
6046 u8 val8;
6047
6048 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
6049 dev_err(np->device, PFX "VPD MAC invalid, "
6050 "falling back to SPROM.\n");
6051
6052 np->flags &= ~NIU_FLAGS_VPD_VALID;
6053 return;
6054 }
6055
6056 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6057 dev_err(np->device, PFX "Illegal phy string [%s].\n",
6058 np->vpd.phy_type);
6059 dev_err(np->device, PFX "Falling back to SPROM.\n");
6060 np->flags &= ~NIU_FLAGS_VPD_VALID;
6061 return;
6062 }
6063
6064 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
6065
6066 val8 = dev->perm_addr[5];
6067 dev->perm_addr[5] += np->port;
6068 if (dev->perm_addr[5] < val8)
6069 dev->perm_addr[4]++;
6070
6071 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6072 }
6073
6074 static int __devinit niu_pci_probe_sprom(struct niu *np)
6075 {
6076 struct net_device *dev = np->dev;
6077 int len, i;
6078 u64 val, sum;
6079 u8 val8;
6080
6081 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
6082 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
6083 len = val / 4;
6084
6085 np->eeprom_len = len;
6086
6087 niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
6088
6089 sum = 0;
6090 for (i = 0; i < len; i++) {
6091 val = nr64(ESPC_NCR(i));
6092 sum += (val >> 0) & 0xff;
6093 sum += (val >> 8) & 0xff;
6094 sum += (val >> 16) & 0xff;
6095 sum += (val >> 24) & 0xff;
6096 }
6097 niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
6098 if ((sum & 0xff) != 0xab) {
6099 dev_err(np->device, PFX "Bad SPROM checksum "
6100 "(%x, should be 0xab)\n", (int) (sum & 0xff));
6101 return -EINVAL;
6102 }
6103
6104 val = nr64(ESPC_PHY_TYPE);
6105 switch (np->port) {
6106 case 0:
6107 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
6108 ESPC_PHY_TYPE_PORT0_SHIFT;
6109 break;
6110 case 1:
6111 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
6112 ESPC_PHY_TYPE_PORT1_SHIFT;
6113 break;
6114 case 2:
6115 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
6116 ESPC_PHY_TYPE_PORT2_SHIFT;
6117 break;
6118 case 3:
6119 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
6120 ESPC_PHY_TYPE_PORT3_SHIFT;
6121 break;
6122 default:
6123 dev_err(np->device, PFX "Bogus port number %u\n",
6124 np->port);
6125 return -EINVAL;
6126 }
6127 niudbg(PROBE, "SPROM: PHY type %x\n", val8);
6128
6129 switch (val8) {
6130 case ESPC_PHY_TYPE_1G_COPPER:
6131 /* 1G copper, MII */
6132 np->flags &= ~(NIU_FLAGS_FIBER |
6133 NIU_FLAGS_10G);
6134 np->mac_xcvr = MAC_XCVR_MII;
6135 break;
6136
6137 case ESPC_PHY_TYPE_1G_FIBER:
6138 /* 1G fiber, PCS */
6139 np->flags &= ~NIU_FLAGS_10G;
6140 np->flags |= NIU_FLAGS_FIBER;
6141 np->mac_xcvr = MAC_XCVR_PCS;
6142 break;
6143
6144 case ESPC_PHY_TYPE_10G_COPPER:
6145 /* 10G copper, XPCS */
6146 np->flags |= NIU_FLAGS_10G;
6147 np->flags &= ~NIU_FLAGS_FIBER;
6148 np->mac_xcvr = MAC_XCVR_XPCS;
6149 break;
6150
6151 case ESPC_PHY_TYPE_10G_FIBER:
6152 /* 10G fiber, XPCS */
6153 np->flags |= (NIU_FLAGS_10G |
6154 NIU_FLAGS_FIBER);
6155 np->mac_xcvr = MAC_XCVR_XPCS;
6156 break;
6157
6158 default:
6159 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
6160 return -EINVAL;
6161 }
6162
6163 val = nr64(ESPC_MAC_ADDR0);
6164 niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
6165 (unsigned long long) val);
6166 dev->perm_addr[0] = (val >> 0) & 0xff;
6167 dev->perm_addr[1] = (val >> 8) & 0xff;
6168 dev->perm_addr[2] = (val >> 16) & 0xff;
6169 dev->perm_addr[3] = (val >> 24) & 0xff;
6170
6171 val = nr64(ESPC_MAC_ADDR1);
6172 niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
6173 (unsigned long long) val);
6174 dev->perm_addr[4] = (val >> 0) & 0xff;
6175 dev->perm_addr[5] = (val >> 8) & 0xff;
6176
6177 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6178 dev_err(np->device, PFX "SPROM MAC address invalid\n");
6179 dev_err(np->device, PFX "[ \n");
6180 for (i = 0; i < 6; i++)
6181 printk("%02x ", dev->perm_addr[i]);
6182 printk("]\n");
6183 return -EINVAL;
6184 }
6185
6186 val8 = dev->perm_addr[5];
6187 dev->perm_addr[5] += np->port;
6188 if (dev->perm_addr[5] < val8)
6189 dev->perm_addr[4]++;
6190
6191 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6192
6193 val = nr64(ESPC_MOD_STR_LEN);
6194 niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
6195 (unsigned long long) val);
6196 if (val >= 8 * 4)
6197 return -EINVAL;
6198
6199 for (i = 0; i < val; i += 4) {
6200 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
6201
6202 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
6203 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
6204 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
6205 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
6206 }
6207 np->vpd.model[val] = '\0';
6208
6209 val = nr64(ESPC_BD_MOD_STR_LEN);
6210 niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
6211 (unsigned long long) val);
6212 if (val >= 4 * 4)
6213 return -EINVAL;
6214
6215 for (i = 0; i < val; i += 4) {
6216 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
6217
6218 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
6219 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
6220 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
6221 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
6222 }
6223 np->vpd.board_model[val] = '\0';
6224
6225 np->vpd.mac_num =
6226 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
6227 niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
6228 np->vpd.mac_num);
6229
6230 return 0;
6231 }
6232
6233 static int __devinit niu_get_and_validate_port(struct niu *np)
6234 {
6235 struct niu_parent *parent = np->parent;
6236
6237 if (np->port <= 1)
6238 np->flags |= NIU_FLAGS_XMAC;
6239
6240 if (!parent->num_ports) {
6241 if (parent->plat_type == PLAT_TYPE_NIU) {
6242 parent->num_ports = 2;
6243 } else {
6244 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
6245 ESPC_NUM_PORTS_MACS_VAL;
6246
6247 if (!parent->num_ports)
6248 parent->num_ports = 4;
6249 }
6250 }
6251
6252 niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
6253 np->port, parent->num_ports);
6254 if (np->port >= parent->num_ports)
6255 return -ENODEV;
6256
6257 return 0;
6258 }
6259
6260 static int __devinit phy_record(struct niu_parent *parent,
6261 struct phy_probe_info *p,
6262 int dev_id_1, int dev_id_2, u8 phy_port,
6263 int type)
6264 {
6265 u32 id = (dev_id_1 << 16) | dev_id_2;
6266 u8 idx;
6267
6268 if (dev_id_1 < 0 || dev_id_2 < 0)
6269 return 0;
6270 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
6271 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704)
6272 return 0;
6273 } else {
6274 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
6275 return 0;
6276 }
6277
6278 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
6279 parent->index, id,
6280 (type == PHY_TYPE_PMA_PMD ?
6281 "PMA/PMD" :
6282 (type == PHY_TYPE_PCS ?
6283 "PCS" : "MII")),
6284 phy_port);
6285
6286 if (p->cur[type] >= NIU_MAX_PORTS) {
6287 printk(KERN_ERR PFX "Too many PHY ports.\n");
6288 return -EINVAL;
6289 }
6290 idx = p->cur[type];
6291 p->phy_id[type][idx] = id;
6292 p->phy_port[type][idx] = phy_port;
6293 p->cur[type] = idx + 1;
6294 return 0;
6295 }
6296
6297 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
6298 {
6299 int i;
6300
6301 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
6302 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
6303 return 1;
6304 }
6305 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
6306 if (p->phy_port[PHY_TYPE_PCS][i] == port)
6307 return 1;
6308 }
6309
6310 return 0;
6311 }
6312
6313 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
6314 {
6315 int port, cnt;
6316
6317 cnt = 0;
6318 *lowest = 32;
6319 for (port = 8; port < 32; port++) {
6320 if (port_has_10g(p, port)) {
6321 if (!cnt)
6322 *lowest = port;
6323 cnt++;
6324 }
6325 }
6326
6327 return cnt;
6328 }
6329
6330 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
6331 {
6332 *lowest = 32;
6333 if (p->cur[PHY_TYPE_MII])
6334 *lowest = p->phy_port[PHY_TYPE_MII][0];
6335
6336 return p->cur[PHY_TYPE_MII];
6337 }
6338
6339 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
6340 {
6341 int num_ports = parent->num_ports;
6342 int i;
6343
6344 for (i = 0; i < num_ports; i++) {
6345 parent->rxchan_per_port[i] = (16 / num_ports);
6346 parent->txchan_per_port[i] = (16 / num_ports);
6347
6348 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6349 "[%u TX chans]\n",
6350 parent->index, i,
6351 parent->rxchan_per_port[i],
6352 parent->txchan_per_port[i]);
6353 }
6354 }
6355
6356 static void __devinit niu_divide_channels(struct niu_parent *parent,
6357 int num_10g, int num_1g)
6358 {
6359 int num_ports = parent->num_ports;
6360 int rx_chans_per_10g, rx_chans_per_1g;
6361 int tx_chans_per_10g, tx_chans_per_1g;
6362 int i, tot_rx, tot_tx;
6363
6364 if (!num_10g || !num_1g) {
6365 rx_chans_per_10g = rx_chans_per_1g =
6366 (NIU_NUM_RXCHAN / num_ports);
6367 tx_chans_per_10g = tx_chans_per_1g =
6368 (NIU_NUM_TXCHAN / num_ports);
6369 } else {
6370 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
6371 rx_chans_per_10g = (NIU_NUM_RXCHAN -
6372 (rx_chans_per_1g * num_1g)) /
6373 num_10g;
6374
6375 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
6376 tx_chans_per_10g = (NIU_NUM_TXCHAN -
6377 (tx_chans_per_1g * num_1g)) /
6378 num_10g;
6379 }
6380
6381 tot_rx = tot_tx = 0;
6382 for (i = 0; i < num_ports; i++) {
6383 int type = phy_decode(parent->port_phy, i);
6384
6385 if (type == PORT_TYPE_10G) {
6386 parent->rxchan_per_port[i] = rx_chans_per_10g;
6387 parent->txchan_per_port[i] = tx_chans_per_10g;
6388 } else {
6389 parent->rxchan_per_port[i] = rx_chans_per_1g;
6390 parent->txchan_per_port[i] = tx_chans_per_1g;
6391 }
6392 pr_info(PFX "niu%d: Port %u [%u RX chans] "
6393 "[%u TX chans]\n",
6394 parent->index, i,
6395 parent->rxchan_per_port[i],
6396 parent->txchan_per_port[i]);
6397 tot_rx += parent->rxchan_per_port[i];
6398 tot_tx += parent->txchan_per_port[i];
6399 }
6400
6401 if (tot_rx > NIU_NUM_RXCHAN) {
6402 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
6403 "resetting to one per port.\n",
6404 parent->index, tot_rx);
6405 for (i = 0; i < num_ports; i++)
6406 parent->rxchan_per_port[i] = 1;
6407 }
6408 if (tot_tx > NIU_NUM_TXCHAN) {
6409 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
6410 "resetting to one per port.\n",
6411 parent->index, tot_tx);
6412 for (i = 0; i < num_ports; i++)
6413 parent->txchan_per_port[i] = 1;
6414 }
6415 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
6416 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
6417 "RX[%d] TX[%d]\n",
6418 parent->index, tot_rx, tot_tx);
6419 }
6420 }
6421
6422 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
6423 int num_10g, int num_1g)
6424 {
6425 int i, num_ports = parent->num_ports;
6426 int rdc_group, rdc_groups_per_port;
6427 int rdc_channel_base;
6428
6429 rdc_group = 0;
6430 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
6431
6432 rdc_channel_base = 0;
6433
6434 for (i = 0; i < num_ports; i++) {
6435 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
6436 int grp, num_channels = parent->rxchan_per_port[i];
6437 int this_channel_offset;
6438
6439 tp->first_table_num = rdc_group;
6440 tp->num_tables = rdc_groups_per_port;
6441 this_channel_offset = 0;
6442 for (grp = 0; grp < tp->num_tables; grp++) {
6443 struct rdc_table *rt = &tp->tables[grp];
6444 int slot;
6445
6446 pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
6447 parent->index, i, tp->first_table_num + grp);
6448 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
6449 rt->rxdma_channel[slot] =
6450 rdc_channel_base + this_channel_offset;
6451
6452 printk("%d ", rt->rxdma_channel[slot]);
6453
6454 if (++this_channel_offset == num_channels)
6455 this_channel_offset = 0;
6456 }
6457 printk("]\n");
6458 }
6459
6460 parent->rdc_default[i] = rdc_channel_base;
6461
6462 rdc_channel_base += num_channels;
6463 rdc_group += rdc_groups_per_port;
6464 }
6465 }
6466
6467 static int __devinit fill_phy_probe_info(struct niu *np,
6468 struct niu_parent *parent,
6469 struct phy_probe_info *info)
6470 {
6471 unsigned long flags;
6472 int port, err;
6473
6474 memset(info, 0, sizeof(*info));
6475
6476 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
6477 niu_lock_parent(np, flags);
6478 err = 0;
6479 for (port = 8; port < 32; port++) {
6480 int dev_id_1, dev_id_2;
6481
6482 dev_id_1 = mdio_read(np, port,
6483 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
6484 dev_id_2 = mdio_read(np, port,
6485 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
6486 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6487 PHY_TYPE_PMA_PMD);
6488 if (err)
6489 break;
6490 dev_id_1 = mdio_read(np, port,
6491 NIU_PCS_DEV_ADDR, MII_PHYSID1);
6492 dev_id_2 = mdio_read(np, port,
6493 NIU_PCS_DEV_ADDR, MII_PHYSID2);
6494 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6495 PHY_TYPE_PCS);
6496 if (err)
6497 break;
6498 dev_id_1 = mii_read(np, port, MII_PHYSID1);
6499 dev_id_2 = mii_read(np, port, MII_PHYSID2);
6500 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
6501 PHY_TYPE_MII);
6502 if (err)
6503 break;
6504 }
6505 niu_unlock_parent(np, flags);
6506
6507 return err;
6508 }
6509
6510 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
6511 {
6512 struct phy_probe_info *info = &parent->phy_probe_info;
6513 int lowest_10g, lowest_1g;
6514 int num_10g, num_1g;
6515 u32 val;
6516 int err;
6517
6518 err = fill_phy_probe_info(np, parent, info);
6519 if (err)
6520 return err;
6521
6522 num_10g = count_10g_ports(info, &lowest_10g);
6523 num_1g = count_1g_ports(info, &lowest_1g);
6524
6525 switch ((num_10g << 4) | num_1g) {
6526 case 0x24:
6527 if (lowest_1g == 10)
6528 parent->plat_type = PLAT_TYPE_VF_P0;
6529 else if (lowest_1g == 26)
6530 parent->plat_type = PLAT_TYPE_VF_P1;
6531 else
6532 goto unknown_vg_1g_port;
6533
6534 /* fallthru */
6535 case 0x22:
6536 val = (phy_encode(PORT_TYPE_10G, 0) |
6537 phy_encode(PORT_TYPE_10G, 1) |
6538 phy_encode(PORT_TYPE_1G, 2) |
6539 phy_encode(PORT_TYPE_1G, 3));
6540 break;
6541
6542 case 0x20:
6543 val = (phy_encode(PORT_TYPE_10G, 0) |
6544 phy_encode(PORT_TYPE_10G, 1));
6545 break;
6546
6547 case 0x10:
6548 val = phy_encode(PORT_TYPE_10G, np->port);
6549 break;
6550
6551 case 0x14:
6552 if (lowest_1g == 10)
6553 parent->plat_type = PLAT_TYPE_VF_P0;
6554 else if (lowest_1g == 26)
6555 parent->plat_type = PLAT_TYPE_VF_P1;
6556 else
6557 goto unknown_vg_1g_port;
6558
6559 /* fallthru */
6560 case 0x13:
6561 if ((lowest_10g & 0x7) == 0)
6562 val = (phy_encode(PORT_TYPE_10G, 0) |
6563 phy_encode(PORT_TYPE_1G, 1) |
6564 phy_encode(PORT_TYPE_1G, 2) |
6565 phy_encode(PORT_TYPE_1G, 3));
6566 else
6567 val = (phy_encode(PORT_TYPE_1G, 0) |
6568 phy_encode(PORT_TYPE_10G, 1) |
6569 phy_encode(PORT_TYPE_1G, 2) |
6570 phy_encode(PORT_TYPE_1G, 3));
6571 break;
6572
6573 case 0x04:
6574 if (lowest_1g == 10)
6575 parent->plat_type = PLAT_TYPE_VF_P0;
6576 else if (lowest_1g == 26)
6577 parent->plat_type = PLAT_TYPE_VF_P1;
6578 else
6579 goto unknown_vg_1g_port;
6580
6581 val = (phy_encode(PORT_TYPE_1G, 0) |
6582 phy_encode(PORT_TYPE_1G, 1) |
6583 phy_encode(PORT_TYPE_1G, 2) |
6584 phy_encode(PORT_TYPE_1G, 3));
6585 break;
6586
6587 default:
6588 printk(KERN_ERR PFX "Unsupported port config "
6589 "10G[%d] 1G[%d]\n",
6590 num_10g, num_1g);
6591 return -EINVAL;
6592 }
6593
6594 parent->port_phy = val;
6595
6596 if (parent->plat_type == PLAT_TYPE_NIU)
6597 niu_n2_divide_channels(parent);
6598 else
6599 niu_divide_channels(parent, num_10g, num_1g);
6600
6601 niu_divide_rdc_groups(parent, num_10g, num_1g);
6602
6603 return 0;
6604
6605 unknown_vg_1g_port:
6606 printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
6607 lowest_1g);
6608 return -EINVAL;
6609 }
6610
6611 static int __devinit niu_probe_ports(struct niu *np)
6612 {
6613 struct niu_parent *parent = np->parent;
6614 int err, i;
6615
6616 niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
6617 parent->port_phy);
6618
6619 if (parent->port_phy == PORT_PHY_UNKNOWN) {
6620 err = walk_phys(np, parent);
6621 if (err)
6622 return err;
6623
6624 niu_set_ldg_timer_res(np, 2);
6625 for (i = 0; i <= LDN_MAX; i++)
6626 niu_ldn_irq_enable(np, i, 0);
6627 }
6628
6629 if (parent->port_phy == PORT_PHY_INVALID)
6630 return -EINVAL;
6631
6632 return 0;
6633 }
6634
6635 static int __devinit niu_classifier_swstate_init(struct niu *np)
6636 {
6637 struct niu_classifier *cp = &np->clas;
6638
6639 niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
6640 np->parent->tcam_num_entries);
6641
6642 cp->tcam_index = (u16) np->port;
6643 cp->h1_init = 0xffffffff;
6644 cp->h2_init = 0xffff;
6645
6646 return fflp_early_init(np);
6647 }
6648
6649 static void __devinit niu_link_config_init(struct niu *np)
6650 {
6651 struct niu_link_config *lp = &np->link_config;
6652
6653 lp->advertising = (ADVERTISED_10baseT_Half |
6654 ADVERTISED_10baseT_Full |
6655 ADVERTISED_100baseT_Half |
6656 ADVERTISED_100baseT_Full |
6657 ADVERTISED_1000baseT_Half |
6658 ADVERTISED_1000baseT_Full |
6659 ADVERTISED_10000baseT_Full |
6660 ADVERTISED_Autoneg);
6661 lp->speed = lp->active_speed = SPEED_INVALID;
6662 lp->duplex = lp->active_duplex = DUPLEX_INVALID;
6663 #if 0
6664 lp->loopback_mode = LOOPBACK_MAC;
6665 lp->active_speed = SPEED_10000;
6666 lp->active_duplex = DUPLEX_FULL;
6667 #else
6668 lp->loopback_mode = LOOPBACK_DISABLED;
6669 #endif
6670 }
6671
6672 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
6673 {
6674 switch (np->port) {
6675 case 0:
6676 np->mac_regs = np->regs + XMAC_PORT0_OFF;
6677 np->ipp_off = 0x00000;
6678 np->pcs_off = 0x04000;
6679 np->xpcs_off = 0x02000;
6680 break;
6681
6682 case 1:
6683 np->mac_regs = np->regs + XMAC_PORT1_OFF;
6684 np->ipp_off = 0x08000;
6685 np->pcs_off = 0x0a000;
6686 np->xpcs_off = 0x08000;
6687 break;
6688
6689 case 2:
6690 np->mac_regs = np->regs + BMAC_PORT2_OFF;
6691 np->ipp_off = 0x04000;
6692 np->pcs_off = 0x0e000;
6693 np->xpcs_off = ~0UL;
6694 break;
6695
6696 case 3:
6697 np->mac_regs = np->regs + BMAC_PORT3_OFF;
6698 np->ipp_off = 0x0c000;
6699 np->pcs_off = 0x12000;
6700 np->xpcs_off = ~0UL;
6701 break;
6702
6703 default:
6704 dev_err(np->device, PFX "Port %u is invalid, cannot "
6705 "compute MAC block offset.\n", np->port);
6706 return -EINVAL;
6707 }
6708
6709 return 0;
6710 }
6711
6712 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
6713 {
6714 struct msix_entry msi_vec[NIU_NUM_LDG];
6715 struct niu_parent *parent = np->parent;
6716 struct pci_dev *pdev = np->pdev;
6717 int i, num_irqs, err;
6718 u8 first_ldg;
6719
6720 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
6721 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
6722 ldg_num_map[i] = first_ldg + i;
6723
6724 num_irqs = (parent->rxchan_per_port[np->port] +
6725 parent->txchan_per_port[np->port] +
6726 (np->port == 0 ? 3 : 1));
6727 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
6728
6729 retry:
6730 for (i = 0; i < num_irqs; i++) {
6731 msi_vec[i].vector = 0;
6732 msi_vec[i].entry = i;
6733 }
6734
6735 err = pci_enable_msix(pdev, msi_vec, num_irqs);
6736 if (err < 0) {
6737 np->flags &= ~NIU_FLAGS_MSIX;
6738 return;
6739 }
6740 if (err > 0) {
6741 num_irqs = err;
6742 goto retry;
6743 }
6744
6745 np->flags |= NIU_FLAGS_MSIX;
6746 for (i = 0; i < num_irqs; i++)
6747 np->ldg[i].irq = msi_vec[i].vector;
6748 np->num_ldg = num_irqs;
6749 }
6750
6751 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
6752 {
6753 #ifdef CONFIG_SPARC64
6754 struct of_device *op = np->op;
6755 const u32 *int_prop;
6756 int i;
6757
6758 int_prop = of_get_property(op->node, "interrupts", NULL);
6759 if (!int_prop)
6760 return -ENODEV;
6761
6762 for (i = 0; i < op->num_irqs; i++) {
6763 ldg_num_map[i] = int_prop[i];
6764 np->ldg[i].irq = op->irqs[i];
6765 }
6766
6767 np->num_ldg = op->num_irqs;
6768
6769 return 0;
6770 #else
6771 return -EINVAL;
6772 #endif
6773 }
6774
6775 static int __devinit niu_ldg_init(struct niu *np)
6776 {
6777 struct niu_parent *parent = np->parent;
6778 u8 ldg_num_map[NIU_NUM_LDG];
6779 int first_chan, num_chan;
6780 int i, err, ldg_rotor;
6781 u8 port;
6782
6783 np->num_ldg = 1;
6784 np->ldg[0].irq = np->dev->irq;
6785 if (parent->plat_type == PLAT_TYPE_NIU) {
6786 err = niu_n2_irq_init(np, ldg_num_map);
6787 if (err)
6788 return err;
6789 } else
6790 niu_try_msix(np, ldg_num_map);
6791
6792 port = np->port;
6793 for (i = 0; i < np->num_ldg; i++) {
6794 struct niu_ldg *lp = &np->ldg[i];
6795
6796 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
6797
6798 lp->np = np;
6799 lp->ldg_num = ldg_num_map[i];
6800 lp->timer = 2; /* XXX */
6801
6802 /* On N2 NIU the firmware has setup the SID mappings so they go
6803 * to the correct values that will route the LDG to the proper
6804 * interrupt in the NCU interrupt table.
6805 */
6806 if (np->parent->plat_type != PLAT_TYPE_NIU) {
6807 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
6808 if (err)
6809 return err;
6810 }
6811 }
6812
6813 /* We adopt the LDG assignment ordering used by the N2 NIU
6814 * 'interrupt' properties because that simplifies a lot of
6815 * things. This ordering is:
6816 *
6817 * MAC
6818 * MIF (if port zero)
6819 * SYSERR (if port zero)
6820 * RX channels
6821 * TX channels
6822 */
6823
6824 ldg_rotor = 0;
6825
6826 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
6827 LDN_MAC(port));
6828 if (err)
6829 return err;
6830
6831 ldg_rotor++;
6832 if (ldg_rotor == np->num_ldg)
6833 ldg_rotor = 0;
6834
6835 if (port == 0) {
6836 err = niu_ldg_assign_ldn(np, parent,
6837 ldg_num_map[ldg_rotor],
6838 LDN_MIF);
6839 if (err)
6840 return err;
6841
6842 ldg_rotor++;
6843 if (ldg_rotor == np->num_ldg)
6844 ldg_rotor = 0;
6845
6846 err = niu_ldg_assign_ldn(np, parent,
6847 ldg_num_map[ldg_rotor],
6848 LDN_DEVICE_ERROR);
6849 if (err)
6850 return err;
6851
6852 ldg_rotor++;
6853 if (ldg_rotor == np->num_ldg)
6854 ldg_rotor = 0;
6855
6856 }
6857
6858 first_chan = 0;
6859 for (i = 0; i < port; i++)
6860 first_chan += parent->rxchan_per_port[port];
6861 num_chan = parent->rxchan_per_port[port];
6862
6863 for (i = first_chan; i < (first_chan + num_chan); i++) {
6864 err = niu_ldg_assign_ldn(np, parent,
6865 ldg_num_map[ldg_rotor],
6866 LDN_RXDMA(i));
6867 if (err)
6868 return err;
6869 ldg_rotor++;
6870 if (ldg_rotor == np->num_ldg)
6871 ldg_rotor = 0;
6872 }
6873
6874 first_chan = 0;
6875 for (i = 0; i < port; i++)
6876 first_chan += parent->txchan_per_port[port];
6877 num_chan = parent->txchan_per_port[port];
6878 for (i = first_chan; i < (first_chan + num_chan); i++) {
6879 err = niu_ldg_assign_ldn(np, parent,
6880 ldg_num_map[ldg_rotor],
6881 LDN_TXDMA(i));
6882 if (err)
6883 return err;
6884 ldg_rotor++;
6885 if (ldg_rotor == np->num_ldg)
6886 ldg_rotor = 0;
6887 }
6888
6889 return 0;
6890 }
6891
6892 static void __devexit niu_ldg_free(struct niu *np)
6893 {
6894 if (np->flags & NIU_FLAGS_MSIX)
6895 pci_disable_msix(np->pdev);
6896 }
6897
6898 static int __devinit niu_get_of_props(struct niu *np)
6899 {
6900 #ifdef CONFIG_SPARC64
6901 struct net_device *dev = np->dev;
6902 struct device_node *dp;
6903 const char *phy_type;
6904 const u8 *mac_addr;
6905 int prop_len;
6906
6907 if (np->parent->plat_type == PLAT_TYPE_NIU)
6908 dp = np->op->node;
6909 else
6910 dp = pci_device_to_OF_node(np->pdev);
6911
6912 phy_type = of_get_property(dp, "phy-type", &prop_len);
6913 if (!phy_type) {
6914 dev_err(np->device, PFX "%s: OF node lacks "
6915 "phy-type property\n",
6916 dp->full_name);
6917 return -EINVAL;
6918 }
6919
6920 if (!strcmp(phy_type, "none"))
6921 return -ENODEV;
6922
6923 strcpy(np->vpd.phy_type, phy_type);
6924
6925 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
6926 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
6927 dp->full_name, np->vpd.phy_type);
6928 return -EINVAL;
6929 }
6930
6931 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
6932 if (!mac_addr) {
6933 dev_err(np->device, PFX "%s: OF node lacks "
6934 "local-mac-address property\n",
6935 dp->full_name);
6936 return -EINVAL;
6937 }
6938 if (prop_len != dev->addr_len) {
6939 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
6940 "is wrong.\n",
6941 dp->full_name, prop_len);
6942 }
6943 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
6944 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
6945 int i;
6946
6947 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
6948 dp->full_name);
6949 dev_err(np->device, PFX "%s: [ \n",
6950 dp->full_name);
6951 for (i = 0; i < 6; i++)
6952 printk("%02x ", dev->perm_addr[i]);
6953 printk("]\n");
6954 return -EINVAL;
6955 }
6956
6957 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
6958
6959 return 0;
6960 #else
6961 return -EINVAL;
6962 #endif
6963 }
6964
6965 static int __devinit niu_get_invariants(struct niu *np)
6966 {
6967 int err, have_props;
6968 u32 offset;
6969
6970 err = niu_get_of_props(np);
6971 if (err == -ENODEV)
6972 return err;
6973
6974 have_props = !err;
6975
6976 err = niu_get_and_validate_port(np);
6977 if (err)
6978 return err;
6979
6980 err = niu_init_mac_ipp_pcs_base(np);
6981 if (err)
6982 return err;
6983
6984 if (!have_props) {
6985 if (np->parent->plat_type == PLAT_TYPE_NIU)
6986 return -EINVAL;
6987
6988 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
6989 offset = niu_pci_vpd_offset(np);
6990 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
6991 offset);
6992 if (offset)
6993 niu_pci_vpd_fetch(np, offset);
6994 nw64(ESPC_PIO_EN, 0);
6995
6996 if (np->flags & NIU_FLAGS_VPD_VALID)
6997 niu_pci_vpd_validate(np);
6998
6999 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
7000 err = niu_pci_probe_sprom(np);
7001 if (err)
7002 return err;
7003 }
7004 }
7005
7006 err = niu_probe_ports(np);
7007 if (err)
7008 return err;
7009
7010 niu_ldg_init(np);
7011
7012 niu_classifier_swstate_init(np);
7013 niu_link_config_init(np);
7014
7015 err = niu_determine_phy_disposition(np);
7016 if (!err)
7017 err = niu_init_link(np);
7018
7019 return err;
7020 }
7021
7022 static LIST_HEAD(niu_parent_list);
7023 static DEFINE_MUTEX(niu_parent_lock);
7024 static int niu_parent_index;
7025
7026 static ssize_t show_port_phy(struct device *dev,
7027 struct device_attribute *attr, char *buf)
7028 {
7029 struct platform_device *plat_dev = to_platform_device(dev);
7030 struct niu_parent *p = plat_dev->dev.platform_data;
7031 u32 port_phy = p->port_phy;
7032 char *orig_buf = buf;
7033 int i;
7034
7035 if (port_phy == PORT_PHY_UNKNOWN ||
7036 port_phy == PORT_PHY_INVALID)
7037 return 0;
7038
7039 for (i = 0; i < p->num_ports; i++) {
7040 const char *type_str;
7041 int type;
7042
7043 type = phy_decode(port_phy, i);
7044 if (type == PORT_TYPE_10G)
7045 type_str = "10G";
7046 else
7047 type_str = "1G";
7048 buf += sprintf(buf,
7049 (i == 0) ? "%s" : " %s",
7050 type_str);
7051 }
7052 buf += sprintf(buf, "\n");
7053 return buf - orig_buf;
7054 }
7055
7056 static ssize_t show_plat_type(struct device *dev,
7057 struct device_attribute *attr, char *buf)
7058 {
7059 struct platform_device *plat_dev = to_platform_device(dev);
7060 struct niu_parent *p = plat_dev->dev.platform_data;
7061 const char *type_str;
7062
7063 switch (p->plat_type) {
7064 case PLAT_TYPE_ATLAS:
7065 type_str = "atlas";
7066 break;
7067 case PLAT_TYPE_NIU:
7068 type_str = "niu";
7069 break;
7070 case PLAT_TYPE_VF_P0:
7071 type_str = "vf_p0";
7072 break;
7073 case PLAT_TYPE_VF_P1:
7074 type_str = "vf_p1";
7075 break;
7076 default:
7077 type_str = "unknown";
7078 break;
7079 }
7080
7081 return sprintf(buf, "%s\n", type_str);
7082 }
7083
7084 static ssize_t __show_chan_per_port(struct device *dev,
7085 struct device_attribute *attr, char *buf,
7086 int rx)
7087 {
7088 struct platform_device *plat_dev = to_platform_device(dev);
7089 struct niu_parent *p = plat_dev->dev.platform_data;
7090 char *orig_buf = buf;
7091 u8 *arr;
7092 int i;
7093
7094 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
7095
7096 for (i = 0; i < p->num_ports; i++) {
7097 buf += sprintf(buf,
7098 (i == 0) ? "%d" : " %d",
7099 arr[i]);
7100 }
7101 buf += sprintf(buf, "\n");
7102
7103 return buf - orig_buf;
7104 }
7105
7106 static ssize_t show_rxchan_per_port(struct device *dev,
7107 struct device_attribute *attr, char *buf)
7108 {
7109 return __show_chan_per_port(dev, attr, buf, 1);
7110 }
7111
7112 static ssize_t show_txchan_per_port(struct device *dev,
7113 struct device_attribute *attr, char *buf)
7114 {
7115 return __show_chan_per_port(dev, attr, buf, 1);
7116 }
7117
7118 static ssize_t show_num_ports(struct device *dev,
7119 struct device_attribute *attr, char *buf)
7120 {
7121 struct platform_device *plat_dev = to_platform_device(dev);
7122 struct niu_parent *p = plat_dev->dev.platform_data;
7123
7124 return sprintf(buf, "%d\n", p->num_ports);
7125 }
7126
7127 static struct device_attribute niu_parent_attributes[] = {
7128 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
7129 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
7130 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
7131 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
7132 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
7133 {}
7134 };
7135
7136 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
7137 union niu_parent_id *id,
7138 u8 ptype)
7139 {
7140 struct platform_device *plat_dev;
7141 struct niu_parent *p;
7142 int i;
7143
7144 niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
7145
7146 plat_dev = platform_device_register_simple("niu", niu_parent_index,
7147 NULL, 0);
7148 if (!plat_dev)
7149 return NULL;
7150
7151 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
7152 int err = device_create_file(&plat_dev->dev,
7153 &niu_parent_attributes[i]);
7154 if (err)
7155 goto fail_unregister;
7156 }
7157
7158 p = kzalloc(sizeof(*p), GFP_KERNEL);
7159 if (!p)
7160 goto fail_unregister;
7161
7162 p->index = niu_parent_index++;
7163
7164 plat_dev->dev.platform_data = p;
7165 p->plat_dev = plat_dev;
7166
7167 memcpy(&p->id, id, sizeof(*id));
7168 p->plat_type = ptype;
7169 INIT_LIST_HEAD(&p->list);
7170 atomic_set(&p->refcnt, 0);
7171 list_add(&p->list, &niu_parent_list);
7172 spin_lock_init(&p->lock);
7173
7174 p->rxdma_clock_divider = 7500;
7175
7176 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
7177 if (p->plat_type == PLAT_TYPE_NIU)
7178 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
7179
7180 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
7181 int index = i - CLASS_CODE_USER_PROG1;
7182
7183 p->tcam_key[index] = TCAM_KEY_TSEL;
7184 p->flow_key[index] = (FLOW_KEY_IPSA |
7185 FLOW_KEY_IPDA |
7186 FLOW_KEY_PROTO |
7187 (FLOW_KEY_L4_BYTE12 <<
7188 FLOW_KEY_L4_0_SHIFT) |
7189 (FLOW_KEY_L4_BYTE12 <<
7190 FLOW_KEY_L4_1_SHIFT));
7191 }
7192
7193 for (i = 0; i < LDN_MAX + 1; i++)
7194 p->ldg_map[i] = LDG_INVALID;
7195
7196 return p;
7197
7198 fail_unregister:
7199 platform_device_unregister(plat_dev);
7200 return NULL;
7201 }
7202
7203 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
7204 union niu_parent_id *id,
7205 u8 ptype)
7206 {
7207 struct niu_parent *p, *tmp;
7208 int port = np->port;
7209
7210 niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
7211 ptype, port);
7212
7213 mutex_lock(&niu_parent_lock);
7214 p = NULL;
7215 list_for_each_entry(tmp, &niu_parent_list, list) {
7216 if (!memcmp(id, &tmp->id, sizeof(*id))) {
7217 p = tmp;
7218 break;
7219 }
7220 }
7221 if (!p)
7222 p = niu_new_parent(np, id, ptype);
7223
7224 if (p) {
7225 char port_name[6];
7226 int err;
7227
7228 sprintf(port_name, "port%d", port);
7229 err = sysfs_create_link(&p->plat_dev->dev.kobj,
7230 &np->device->kobj,
7231 port_name);
7232 if (!err) {
7233 p->ports[port] = np;
7234 atomic_inc(&p->refcnt);
7235 }
7236 }
7237 mutex_unlock(&niu_parent_lock);
7238
7239 return p;
7240 }
7241
7242 static void niu_put_parent(struct niu *np)
7243 {
7244 struct niu_parent *p = np->parent;
7245 u8 port = np->port;
7246 char port_name[6];
7247
7248 BUG_ON(!p || p->ports[port] != np);
7249
7250 niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
7251
7252 sprintf(port_name, "port%d", port);
7253
7254 mutex_lock(&niu_parent_lock);
7255
7256 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
7257
7258 p->ports[port] = NULL;
7259 np->parent = NULL;
7260
7261 if (atomic_dec_and_test(&p->refcnt)) {
7262 list_del(&p->list);
7263 platform_device_unregister(p->plat_dev);
7264 }
7265
7266 mutex_unlock(&niu_parent_lock);
7267 }
7268
7269 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
7270 u64 *handle, gfp_t flag)
7271 {
7272 dma_addr_t dh;
7273 void *ret;
7274
7275 ret = dma_alloc_coherent(dev, size, &dh, flag);
7276 if (ret)
7277 *handle = dh;
7278 return ret;
7279 }
7280
7281 static void niu_pci_free_coherent(struct device *dev, size_t size,
7282 void *cpu_addr, u64 handle)
7283 {
7284 dma_free_coherent(dev, size, cpu_addr, handle);
7285 }
7286
7287 static u64 niu_pci_map_page(struct device *dev, struct page *page,
7288 unsigned long offset, size_t size,
7289 enum dma_data_direction direction)
7290 {
7291 return dma_map_page(dev, page, offset, size, direction);
7292 }
7293
7294 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
7295 size_t size, enum dma_data_direction direction)
7296 {
7297 return dma_unmap_page(dev, dma_address, size, direction);
7298 }
7299
7300 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
7301 size_t size,
7302 enum dma_data_direction direction)
7303 {
7304 return dma_map_single(dev, cpu_addr, size, direction);
7305 }
7306
7307 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
7308 size_t size,
7309 enum dma_data_direction direction)
7310 {
7311 dma_unmap_single(dev, dma_address, size, direction);
7312 }
7313
7314 static const struct niu_ops niu_pci_ops = {
7315 .alloc_coherent = niu_pci_alloc_coherent,
7316 .free_coherent = niu_pci_free_coherent,
7317 .map_page = niu_pci_map_page,
7318 .unmap_page = niu_pci_unmap_page,
7319 .map_single = niu_pci_map_single,
7320 .unmap_single = niu_pci_unmap_single,
7321 };
7322
7323 static void __devinit niu_driver_version(void)
7324 {
7325 static int niu_version_printed;
7326
7327 if (niu_version_printed++ == 0)
7328 pr_info("%s", version);
7329 }
7330
7331 static struct net_device * __devinit niu_alloc_and_init(
7332 struct device *gen_dev, struct pci_dev *pdev,
7333 struct of_device *op, const struct niu_ops *ops,
7334 u8 port)
7335 {
7336 struct net_device *dev = alloc_etherdev(sizeof(struct niu));
7337 struct niu *np;
7338
7339 if (!dev) {
7340 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
7341 return NULL;
7342 }
7343
7344 SET_NETDEV_DEV(dev, gen_dev);
7345
7346 np = netdev_priv(dev);
7347 np->dev = dev;
7348 np->pdev = pdev;
7349 np->op = op;
7350 np->device = gen_dev;
7351 np->ops = ops;
7352
7353 np->msg_enable = niu_debug;
7354
7355 spin_lock_init(&np->lock);
7356 INIT_WORK(&np->reset_task, niu_reset_task);
7357
7358 np->port = port;
7359
7360 return dev;
7361 }
7362
7363 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
7364 {
7365 dev->open = niu_open;
7366 dev->stop = niu_close;
7367 dev->get_stats = niu_get_stats;
7368 dev->set_multicast_list = niu_set_rx_mode;
7369 dev->set_mac_address = niu_set_mac_addr;
7370 dev->do_ioctl = niu_ioctl;
7371 dev->tx_timeout = niu_tx_timeout;
7372 dev->hard_start_xmit = niu_start_xmit;
7373 dev->ethtool_ops = &niu_ethtool_ops;
7374 dev->watchdog_timeo = NIU_TX_TIMEOUT;
7375 dev->change_mtu = niu_change_mtu;
7376 }
7377
7378 static void __devinit niu_device_announce(struct niu *np)
7379 {
7380 struct net_device *dev = np->dev;
7381 int i;
7382
7383 pr_info("%s: NIU Ethernet ", dev->name);
7384 for (i = 0; i < 6; i++)
7385 printk("%2.2x%c", dev->dev_addr[i],
7386 i == 5 ? '\n' : ':');
7387
7388 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
7389 dev->name,
7390 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
7391 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
7392 (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
7393 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
7394 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
7395 np->vpd.phy_type);
7396 }
7397
7398 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
7399 const struct pci_device_id *ent)
7400 {
7401 unsigned long niureg_base, niureg_len;
7402 union niu_parent_id parent_id;
7403 struct net_device *dev;
7404 struct niu *np;
7405 int err, pos;
7406 u64 dma_mask;
7407 u16 val16;
7408
7409 niu_driver_version();
7410
7411 err = pci_enable_device(pdev);
7412 if (err) {
7413 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
7414 "aborting.\n");
7415 return err;
7416 }
7417
7418 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
7419 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
7420 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
7421 "base addresses, aborting.\n");
7422 err = -ENODEV;
7423 goto err_out_disable_pdev;
7424 }
7425
7426 err = pci_request_regions(pdev, DRV_MODULE_NAME);
7427 if (err) {
7428 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
7429 "aborting.\n");
7430 goto err_out_disable_pdev;
7431 }
7432
7433 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
7434 if (pos <= 0) {
7435 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
7436 "aborting.\n");
7437 goto err_out_free_res;
7438 }
7439
7440 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
7441 &niu_pci_ops, PCI_FUNC(pdev->devfn));
7442 if (!dev) {
7443 err = -ENOMEM;
7444 goto err_out_free_res;
7445 }
7446 np = netdev_priv(dev);
7447
7448 memset(&parent_id, 0, sizeof(parent_id));
7449 parent_id.pci.domain = pci_domain_nr(pdev->bus);
7450 parent_id.pci.bus = pdev->bus->number;
7451 parent_id.pci.device = PCI_SLOT(pdev->devfn);
7452
7453 np->parent = niu_get_parent(np, &parent_id,
7454 PLAT_TYPE_ATLAS);
7455 if (!np->parent) {
7456 err = -ENOMEM;
7457 goto err_out_free_dev;
7458 }
7459
7460 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
7461 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
7462 val16 |= (PCI_EXP_DEVCTL_CERE |
7463 PCI_EXP_DEVCTL_NFERE |
7464 PCI_EXP_DEVCTL_FERE |
7465 PCI_EXP_DEVCTL_URRE |
7466 PCI_EXP_DEVCTL_RELAX_EN);
7467 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
7468
7469 dma_mask = DMA_44BIT_MASK;
7470 err = pci_set_dma_mask(pdev, dma_mask);
7471 if (!err) {
7472 dev->features |= NETIF_F_HIGHDMA;
7473 err = pci_set_consistent_dma_mask(pdev, dma_mask);
7474 if (err) {
7475 dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
7476 "DMA for consistent allocations, "
7477 "aborting.\n");
7478 goto err_out_release_parent;
7479 }
7480 }
7481 if (err || dma_mask == DMA_32BIT_MASK) {
7482 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7483 if (err) {
7484 dev_err(&pdev->dev, PFX "No usable DMA configuration, "
7485 "aborting.\n");
7486 goto err_out_release_parent;
7487 }
7488 }
7489
7490 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7491
7492 niureg_base = pci_resource_start(pdev, 0);
7493 niureg_len = pci_resource_len(pdev, 0);
7494
7495 np->regs = ioremap_nocache(niureg_base, niureg_len);
7496 if (!np->regs) {
7497 dev_err(&pdev->dev, PFX "Cannot map device registers, "
7498 "aborting.\n");
7499 err = -ENOMEM;
7500 goto err_out_release_parent;
7501 }
7502
7503 pci_set_master(pdev);
7504 pci_save_state(pdev);
7505
7506 dev->irq = pdev->irq;
7507
7508 niu_assign_netdev_ops(dev);
7509
7510 err = niu_get_invariants(np);
7511 if (err) {
7512 if (err != -ENODEV)
7513 dev_err(&pdev->dev, PFX "Problem fetching invariants "
7514 "of chip, aborting.\n");
7515 goto err_out_iounmap;
7516 }
7517
7518 err = register_netdev(dev);
7519 if (err) {
7520 dev_err(&pdev->dev, PFX "Cannot register net device, "
7521 "aborting.\n");
7522 goto err_out_iounmap;
7523 }
7524
7525 pci_set_drvdata(pdev, dev);
7526
7527 niu_device_announce(np);
7528
7529 return 0;
7530
7531 err_out_iounmap:
7532 if (np->regs) {
7533 iounmap(np->regs);
7534 np->regs = NULL;
7535 }
7536
7537 err_out_release_parent:
7538 niu_put_parent(np);
7539
7540 err_out_free_dev:
7541 free_netdev(dev);
7542
7543 err_out_free_res:
7544 pci_release_regions(pdev);
7545
7546 err_out_disable_pdev:
7547 pci_disable_device(pdev);
7548 pci_set_drvdata(pdev, NULL);
7549
7550 return err;
7551 }
7552
7553 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
7554 {
7555 struct net_device *dev = pci_get_drvdata(pdev);
7556
7557 if (dev) {
7558 struct niu *np = netdev_priv(dev);
7559
7560 unregister_netdev(dev);
7561 if (np->regs) {
7562 iounmap(np->regs);
7563 np->regs = NULL;
7564 }
7565
7566 niu_ldg_free(np);
7567
7568 niu_put_parent(np);
7569
7570 free_netdev(dev);
7571 pci_release_regions(pdev);
7572 pci_disable_device(pdev);
7573 pci_set_drvdata(pdev, NULL);
7574 }
7575 }
7576
7577 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
7578 {
7579 struct net_device *dev = pci_get_drvdata(pdev);
7580 struct niu *np = netdev_priv(dev);
7581 unsigned long flags;
7582
7583 if (!netif_running(dev))
7584 return 0;
7585
7586 flush_scheduled_work();
7587 niu_netif_stop(np);
7588
7589 del_timer_sync(&np->timer);
7590
7591 spin_lock_irqsave(&np->lock, flags);
7592 niu_enable_interrupts(np, 0);
7593 spin_unlock_irqrestore(&np->lock, flags);
7594
7595 netif_device_detach(dev);
7596
7597 spin_lock_irqsave(&np->lock, flags);
7598 niu_stop_hw(np);
7599 spin_unlock_irqrestore(&np->lock, flags);
7600
7601 pci_save_state(pdev);
7602
7603 return 0;
7604 }
7605
7606 static int niu_resume(struct pci_dev *pdev)
7607 {
7608 struct net_device *dev = pci_get_drvdata(pdev);
7609 struct niu *np = netdev_priv(dev);
7610 unsigned long flags;
7611 int err;
7612
7613 if (!netif_running(dev))
7614 return 0;
7615
7616 pci_restore_state(pdev);
7617
7618 netif_device_attach(dev);
7619
7620 spin_lock_irqsave(&np->lock, flags);
7621
7622 err = niu_init_hw(np);
7623 if (!err) {
7624 np->timer.expires = jiffies + HZ;
7625 add_timer(&np->timer);
7626 niu_netif_start(np);
7627 }
7628
7629 spin_unlock_irqrestore(&np->lock, flags);
7630
7631 return err;
7632 }
7633
7634 static struct pci_driver niu_pci_driver = {
7635 .name = DRV_MODULE_NAME,
7636 .id_table = niu_pci_tbl,
7637 .probe = niu_pci_init_one,
7638 .remove = __devexit_p(niu_pci_remove_one),
7639 .suspend = niu_suspend,
7640 .resume = niu_resume,
7641 };
7642
7643 #ifdef CONFIG_SPARC64
7644 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
7645 u64 *dma_addr, gfp_t flag)
7646 {
7647 unsigned long order = get_order(size);
7648 unsigned long page = __get_free_pages(flag, order);
7649
7650 if (page == 0UL)
7651 return NULL;
7652 memset((char *)page, 0, PAGE_SIZE << order);
7653 *dma_addr = __pa(page);
7654
7655 return (void *) page;
7656 }
7657
7658 static void niu_phys_free_coherent(struct device *dev, size_t size,
7659 void *cpu_addr, u64 handle)
7660 {
7661 unsigned long order = get_order(size);
7662
7663 free_pages((unsigned long) cpu_addr, order);
7664 }
7665
7666 static u64 niu_phys_map_page(struct device *dev, struct page *page,
7667 unsigned long offset, size_t size,
7668 enum dma_data_direction direction)
7669 {
7670 return page_to_phys(page) + offset;
7671 }
7672
7673 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
7674 size_t size, enum dma_data_direction direction)
7675 {
7676 /* Nothing to do. */
7677 }
7678
7679 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
7680 size_t size,
7681 enum dma_data_direction direction)
7682 {
7683 return __pa(cpu_addr);
7684 }
7685
7686 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
7687 size_t size,
7688 enum dma_data_direction direction)
7689 {
7690 /* Nothing to do. */
7691 }
7692
7693 static const struct niu_ops niu_phys_ops = {
7694 .alloc_coherent = niu_phys_alloc_coherent,
7695 .free_coherent = niu_phys_free_coherent,
7696 .map_page = niu_phys_map_page,
7697 .unmap_page = niu_phys_unmap_page,
7698 .map_single = niu_phys_map_single,
7699 .unmap_single = niu_phys_unmap_single,
7700 };
7701
7702 static unsigned long res_size(struct resource *r)
7703 {
7704 return r->end - r->start + 1UL;
7705 }
7706
7707 static int __devinit niu_of_probe(struct of_device *op,
7708 const struct of_device_id *match)
7709 {
7710 union niu_parent_id parent_id;
7711 struct net_device *dev;
7712 struct niu *np;
7713 const u32 *reg;
7714 int err;
7715
7716 niu_driver_version();
7717
7718 reg = of_get_property(op->node, "reg", NULL);
7719 if (!reg) {
7720 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
7721 op->node->full_name);
7722 return -ENODEV;
7723 }
7724
7725 dev = niu_alloc_and_init(&op->dev, NULL, op,
7726 &niu_phys_ops, reg[0] & 0x1);
7727 if (!dev) {
7728 err = -ENOMEM;
7729 goto err_out;
7730 }
7731 np = netdev_priv(dev);
7732
7733 memset(&parent_id, 0, sizeof(parent_id));
7734 parent_id.of = of_get_parent(op->node);
7735
7736 np->parent = niu_get_parent(np, &parent_id,
7737 PLAT_TYPE_NIU);
7738 if (!np->parent) {
7739 err = -ENOMEM;
7740 goto err_out_free_dev;
7741 }
7742
7743 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
7744
7745 np->regs = of_ioremap(&op->resource[1], 0,
7746 res_size(&op->resource[1]),
7747 "niu regs");
7748 if (!np->regs) {
7749 dev_err(&op->dev, PFX "Cannot map device registers, "
7750 "aborting.\n");
7751 err = -ENOMEM;
7752 goto err_out_release_parent;
7753 }
7754
7755 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
7756 res_size(&op->resource[2]),
7757 "niu vregs-1");
7758 if (!np->vir_regs_1) {
7759 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
7760 "aborting.\n");
7761 err = -ENOMEM;
7762 goto err_out_iounmap;
7763 }
7764
7765 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
7766 res_size(&op->resource[3]),
7767 "niu vregs-2");
7768 if (!np->vir_regs_2) {
7769 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
7770 "aborting.\n");
7771 err = -ENOMEM;
7772 goto err_out_iounmap;
7773 }
7774
7775 niu_assign_netdev_ops(dev);
7776
7777 err = niu_get_invariants(np);
7778 if (err) {
7779 if (err != -ENODEV)
7780 dev_err(&op->dev, PFX "Problem fetching invariants "
7781 "of chip, aborting.\n");
7782 goto err_out_iounmap;
7783 }
7784
7785 err = register_netdev(dev);
7786 if (err) {
7787 dev_err(&op->dev, PFX "Cannot register net device, "
7788 "aborting.\n");
7789 goto err_out_iounmap;
7790 }
7791
7792 dev_set_drvdata(&op->dev, dev);
7793
7794 niu_device_announce(np);
7795
7796 return 0;
7797
7798 err_out_iounmap:
7799 if (np->vir_regs_1) {
7800 of_iounmap(&op->resource[2], np->vir_regs_1,
7801 res_size(&op->resource[2]));
7802 np->vir_regs_1 = NULL;
7803 }
7804
7805 if (np->vir_regs_2) {
7806 of_iounmap(&op->resource[3], np->vir_regs_2,
7807 res_size(&op->resource[3]));
7808 np->vir_regs_2 = NULL;
7809 }
7810
7811 if (np->regs) {
7812 of_iounmap(&op->resource[1], np->regs,
7813 res_size(&op->resource[1]));
7814 np->regs = NULL;
7815 }
7816
7817 err_out_release_parent:
7818 niu_put_parent(np);
7819
7820 err_out_free_dev:
7821 free_netdev(dev);
7822
7823 err_out:
7824 return err;
7825 }
7826
7827 static int __devexit niu_of_remove(struct of_device *op)
7828 {
7829 struct net_device *dev = dev_get_drvdata(&op->dev);
7830
7831 if (dev) {
7832 struct niu *np = netdev_priv(dev);
7833
7834 unregister_netdev(dev);
7835
7836 if (np->vir_regs_1) {
7837 of_iounmap(&op->resource[2], np->vir_regs_1,
7838 res_size(&op->resource[2]));
7839 np->vir_regs_1 = NULL;
7840 }
7841
7842 if (np->vir_regs_2) {
7843 of_iounmap(&op->resource[3], np->vir_regs_2,
7844 res_size(&op->resource[3]));
7845 np->vir_regs_2 = NULL;
7846 }
7847
7848 if (np->regs) {
7849 of_iounmap(&op->resource[1], np->regs,
7850 res_size(&op->resource[1]));
7851 np->regs = NULL;
7852 }
7853
7854 niu_ldg_free(np);
7855
7856 niu_put_parent(np);
7857
7858 free_netdev(dev);
7859 dev_set_drvdata(&op->dev, NULL);
7860 }
7861 return 0;
7862 }
7863
7864 static struct of_device_id niu_match[] = {
7865 {
7866 .name = "network",
7867 .compatible = "SUNW,niusl",
7868 },
7869 {},
7870 };
7871 MODULE_DEVICE_TABLE(of, niu_match);
7872
7873 static struct of_platform_driver niu_of_driver = {
7874 .name = "niu",
7875 .match_table = niu_match,
7876 .probe = niu_of_probe,
7877 .remove = __devexit_p(niu_of_remove),
7878 };
7879
7880 #endif /* CONFIG_SPARC64 */
7881
7882 static int __init niu_init(void)
7883 {
7884 int err = 0;
7885
7886 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
7887
7888 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
7889
7890 #ifdef CONFIG_SPARC64
7891 err = of_register_driver(&niu_of_driver, &of_bus_type);
7892 #endif
7893
7894 if (!err) {
7895 err = pci_register_driver(&niu_pci_driver);
7896 #ifdef CONFIG_SPARC64
7897 if (err)
7898 of_unregister_driver(&niu_of_driver);
7899 #endif
7900 }
7901
7902 return err;
7903 }
7904
7905 static void __exit niu_exit(void)
7906 {
7907 pci_unregister_driver(&niu_pci_driver);
7908 #ifdef CONFIG_SPARC64
7909 of_unregister_driver(&niu_of_driver);
7910 #endif
7911 }
7912
7913 module_init(niu_init);
7914 module_exit(niu_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree