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Blackfin arch: do not allow people to pass in a diff clkin_hz value
[linux-2.6/mini2440.git] / drivers / net / niu.c
blob0c0b752315cae844c6944b912d8605032070e93c
1 /* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6 #include <linux/module.h>
7 #include <linux/init.h>
8 #include <linux/pci.h>
9 #include <linux/dma-mapping.h>
10 #include <linux/netdevice.h>
11 #include <linux/ethtool.h>
12 #include <linux/etherdevice.h>
13 #include <linux/platform_device.h>
14 #include <linux/delay.h>
15 #include <linux/bitops.h>
16 #include <linux/mii.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ip.h>
20 #include <linux/in.h>
21 #include <linux/ipv6.h>
22 #include <linux/log2.h>
23 #include <linux/jiffies.h>
24 #include <linux/crc32.h>
25
26 #include <linux/io.h>
27
28 #ifdef CONFIG_SPARC64
29 #include <linux/of_device.h>
30 #endif
31
32 #include "niu.h"
33
34 #define DRV_MODULE_NAME "niu"
35 #define PFX DRV_MODULE_NAME ": "
36 #define DRV_MODULE_VERSION "1.0"
37 #define DRV_MODULE_RELDATE "Nov 14, 2008"
38
39 static char version[] __devinitdata =
40 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
41
42 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
43 MODULE_DESCRIPTION("NIU ethernet driver");
44 MODULE_LICENSE("GPL");
45 MODULE_VERSION(DRV_MODULE_VERSION);
46
47 #ifndef DMA_44BIT_MASK
48 #define DMA_44BIT_MASK 0x00000fffffffffffULL
49 #endif
50
51 #ifndef readq
52 static u64 readq(void __iomem *reg)
53 {
54 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
55 }
56
57 static void writeq(u64 val, void __iomem *reg)
58 {
59 writel(val & 0xffffffff, reg);
60 writel(val >> 32, reg + 0x4UL);
61 }
62 #endif
63
64 static struct pci_device_id niu_pci_tbl[] = {
65 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
66 {}
67 };
68
69 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
70
71 #define NIU_TX_TIMEOUT (5 * HZ)
72
73 #define nr64(reg) readq(np->regs + (reg))
74 #define nw64(reg, val) writeq((val), np->regs + (reg))
75
76 #define nr64_mac(reg) readq(np->mac_regs + (reg))
77 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
78
79 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
80 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
81
82 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
83 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
84
85 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
86 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
87
88 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
89
90 static int niu_debug;
91 static int debug = -1;
92 module_param(debug, int, 0);
93 MODULE_PARM_DESC(debug, "NIU debug level");
94
95 #define niudbg(TYPE, f, a...) \
96 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
97 printk(KERN_DEBUG PFX f, ## a); \
98 } while (0)
99
100 #define niuinfo(TYPE, f, a...) \
101 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
102 printk(KERN_INFO PFX f, ## a); \
103 } while (0)
104
105 #define niuwarn(TYPE, f, a...) \
106 do { if ((np)->msg_enable & NETIF_MSG_##TYPE) \
107 printk(KERN_WARNING PFX f, ## a); \
108 } while (0)
109
110 #define niu_lock_parent(np, flags) \
111 spin_lock_irqsave(&np->parent->lock, flags)
112 #define niu_unlock_parent(np, flags) \
113 spin_unlock_irqrestore(&np->parent->lock, flags)
114
115 static int serdes_init_10g_serdes(struct niu *np);
116
117 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
118 u64 bits, int limit, int delay)
119 {
120 while (--limit >= 0) {
121 u64 val = nr64_mac(reg);
122
123 if (!(val & bits))
124 break;
125 udelay(delay);
126 }
127 if (limit < 0)
128 return -ENODEV;
129 return 0;
130 }
131
132 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
133 u64 bits, int limit, int delay,
134 const char *reg_name)
135 {
136 int err;
137
138 nw64_mac(reg, bits);
139 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
140 if (err)
141 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
142 "would not clear, val[%llx]\n",
143 np->dev->name, (unsigned long long) bits, reg_name,
144 (unsigned long long) nr64_mac(reg));
145 return err;
146 }
147
148 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
149 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
150 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
151 })
152
153 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
154 u64 bits, int limit, int delay)
155 {
156 while (--limit >= 0) {
157 u64 val = nr64_ipp(reg);
158
159 if (!(val & bits))
160 break;
161 udelay(delay);
162 }
163 if (limit < 0)
164 return -ENODEV;
165 return 0;
166 }
167
168 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
169 u64 bits, int limit, int delay,
170 const char *reg_name)
171 {
172 int err;
173 u64 val;
174
175 val = nr64_ipp(reg);
176 val |= bits;
177 nw64_ipp(reg, val);
178
179 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
180 if (err)
181 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
182 "would not clear, val[%llx]\n",
183 np->dev->name, (unsigned long long) bits, reg_name,
184 (unsigned long long) nr64_ipp(reg));
185 return err;
186 }
187
188 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
189 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
190 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
191 })
192
193 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
194 u64 bits, int limit, int delay)
195 {
196 while (--limit >= 0) {
197 u64 val = nr64(reg);
198
199 if (!(val & bits))
200 break;
201 udelay(delay);
202 }
203 if (limit < 0)
204 return -ENODEV;
205 return 0;
206 }
207
208 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
209 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
210 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
211 })
212
213 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
214 u64 bits, int limit, int delay,
215 const char *reg_name)
216 {
217 int err;
218
219 nw64(reg, bits);
220 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
221 if (err)
222 dev_err(np->device, PFX "%s: bits (%llx) of register %s "
223 "would not clear, val[%llx]\n",
224 np->dev->name, (unsigned long long) bits, reg_name,
225 (unsigned long long) nr64(reg));
226 return err;
227 }
228
229 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
230 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
231 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
232 })
233
234 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
235 {
236 u64 val = (u64) lp->timer;
237
238 if (on)
239 val |= LDG_IMGMT_ARM;
240
241 nw64(LDG_IMGMT(lp->ldg_num), val);
242 }
243
244 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
245 {
246 unsigned long mask_reg, bits;
247 u64 val;
248
249 if (ldn < 0 || ldn > LDN_MAX)
250 return -EINVAL;
251
252 if (ldn < 64) {
253 mask_reg = LD_IM0(ldn);
254 bits = LD_IM0_MASK;
255 } else {
256 mask_reg = LD_IM1(ldn - 64);
257 bits = LD_IM1_MASK;
258 }
259
260 val = nr64(mask_reg);
261 if (on)
262 val &= ~bits;
263 else
264 val |= bits;
265 nw64(mask_reg, val);
266
267 return 0;
268 }
269
270 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
271 {
272 struct niu_parent *parent = np->parent;
273 int i;
274
275 for (i = 0; i <= LDN_MAX; i++) {
276 int err;
277
278 if (parent->ldg_map[i] != lp->ldg_num)
279 continue;
280
281 err = niu_ldn_irq_enable(np, i, on);
282 if (err)
283 return err;
284 }
285 return 0;
286 }
287
288 static int niu_enable_interrupts(struct niu *np, int on)
289 {
290 int i;
291
292 for (i = 0; i < np->num_ldg; i++) {
293 struct niu_ldg *lp = &np->ldg[i];
294 int err;
295
296 err = niu_enable_ldn_in_ldg(np, lp, on);
297 if (err)
298 return err;
299 }
300 for (i = 0; i < np->num_ldg; i++)
301 niu_ldg_rearm(np, &np->ldg[i], on);
302
303 return 0;
304 }
305
306 static u32 phy_encode(u32 type, int port)
307 {
308 return (type << (port * 2));
309 }
310
311 static u32 phy_decode(u32 val, int port)
312 {
313 return (val >> (port * 2)) & PORT_TYPE_MASK;
314 }
315
316 static int mdio_wait(struct niu *np)
317 {
318 int limit = 1000;
319 u64 val;
320
321 while (--limit > 0) {
322 val = nr64(MIF_FRAME_OUTPUT);
323 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
324 return val & MIF_FRAME_OUTPUT_DATA;
325
326 udelay(10);
327 }
328
329 return -ENODEV;
330 }
331
332 static int mdio_read(struct niu *np, int port, int dev, int reg)
333 {
334 int err;
335
336 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
337 err = mdio_wait(np);
338 if (err < 0)
339 return err;
340
341 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
342 return mdio_wait(np);
343 }
344
345 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
346 {
347 int err;
348
349 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
350 err = mdio_wait(np);
351 if (err < 0)
352 return err;
353
354 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
355 err = mdio_wait(np);
356 if (err < 0)
357 return err;
358
359 return 0;
360 }
361
362 static int mii_read(struct niu *np, int port, int reg)
363 {
364 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
365 return mdio_wait(np);
366 }
367
368 static int mii_write(struct niu *np, int port, int reg, int data)
369 {
370 int err;
371
372 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
373 err = mdio_wait(np);
374 if (err < 0)
375 return err;
376
377 return 0;
378 }
379
380 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
381 {
382 int err;
383
384 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
385 ESR2_TI_PLL_TX_CFG_L(channel),
386 val & 0xffff);
387 if (!err)
388 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
389 ESR2_TI_PLL_TX_CFG_H(channel),
390 val >> 16);
391 return err;
392 }
393
394 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
395 {
396 int err;
397
398 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
399 ESR2_TI_PLL_RX_CFG_L(channel),
400 val & 0xffff);
401 if (!err)
402 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
403 ESR2_TI_PLL_RX_CFG_H(channel),
404 val >> 16);
405 return err;
406 }
407
408 /* Mode is always 10G fiber. */
409 static int serdes_init_niu_10g_fiber(struct niu *np)
410 {
411 struct niu_link_config *lp = &np->link_config;
412 u32 tx_cfg, rx_cfg;
413 unsigned long i;
414
415 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
416 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
417 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
418 PLL_RX_CFG_EQ_LP_ADAPTIVE);
419
420 if (lp->loopback_mode == LOOPBACK_PHY) {
421 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
422
423 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
424 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
425
426 tx_cfg |= PLL_TX_CFG_ENTEST;
427 rx_cfg |= PLL_RX_CFG_ENTEST;
428 }
429
430 /* Initialize all 4 lanes of the SERDES. */
431 for (i = 0; i < 4; i++) {
432 int err = esr2_set_tx_cfg(np, i, tx_cfg);
433 if (err)
434 return err;
435 }
436
437 for (i = 0; i < 4; i++) {
438 int err = esr2_set_rx_cfg(np, i, rx_cfg);
439 if (err)
440 return err;
441 }
442
443 return 0;
444 }
445
446 static int serdes_init_niu_1g_serdes(struct niu *np)
447 {
448 struct niu_link_config *lp = &np->link_config;
449 u16 pll_cfg, pll_sts;
450 int max_retry = 100;
451 u64 uninitialized_var(sig), mask, val;
452 u32 tx_cfg, rx_cfg;
453 unsigned long i;
454 int err;
455
456 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
457 PLL_TX_CFG_RATE_HALF);
458 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
459 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
460 PLL_RX_CFG_RATE_HALF);
461
462 if (np->port == 0)
463 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
464
465 if (lp->loopback_mode == LOOPBACK_PHY) {
466 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
467
468 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
469 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
470
471 tx_cfg |= PLL_TX_CFG_ENTEST;
472 rx_cfg |= PLL_RX_CFG_ENTEST;
473 }
474
475 /* Initialize PLL for 1G */
476 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
477
478 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
479 ESR2_TI_PLL_CFG_L, pll_cfg);
480 if (err) {
481 dev_err(np->device, PFX "NIU Port %d "
482 "serdes_init_niu_1g_serdes: "
483 "mdio write to ESR2_TI_PLL_CFG_L failed", np->port);
484 return err;
485 }
486
487 pll_sts = PLL_CFG_ENPLL;
488
489 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
490 ESR2_TI_PLL_STS_L, pll_sts);
491 if (err) {
492 dev_err(np->device, PFX "NIU Port %d "
493 "serdes_init_niu_1g_serdes: "
494 "mdio write to ESR2_TI_PLL_STS_L failed", np->port);
495 return err;
496 }
497
498 udelay(200);
499
500 /* Initialize all 4 lanes of the SERDES. */
501 for (i = 0; i < 4; i++) {
502 err = esr2_set_tx_cfg(np, i, tx_cfg);
503 if (err)
504 return err;
505 }
506
507 for (i = 0; i < 4; i++) {
508 err = esr2_set_rx_cfg(np, i, rx_cfg);
509 if (err)
510 return err;
511 }
512
513 switch (np->port) {
514 case 0:
515 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
516 mask = val;
517 break;
518
519 case 1:
520 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
521 mask = val;
522 break;
523
524 default:
525 return -EINVAL;
526 }
527
528 while (max_retry--) {
529 sig = nr64(ESR_INT_SIGNALS);
530 if ((sig & mask) == val)
531 break;
532
533 mdelay(500);
534 }
535
536 if ((sig & mask) != val) {
537 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
538 "[%08x]\n", np->port, (int) (sig & mask), (int) val);
539 return -ENODEV;
540 }
541
542 return 0;
543 }
544
545 static int serdes_init_niu_10g_serdes(struct niu *np)
546 {
547 struct niu_link_config *lp = &np->link_config;
548 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
549 int max_retry = 100;
550 u64 uninitialized_var(sig), mask, val;
551 unsigned long i;
552 int err;
553
554 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
555 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
556 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
557 PLL_RX_CFG_EQ_LP_ADAPTIVE);
558
559 if (lp->loopback_mode == LOOPBACK_PHY) {
560 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
561
562 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
563 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
564
565 tx_cfg |= PLL_TX_CFG_ENTEST;
566 rx_cfg |= PLL_RX_CFG_ENTEST;
567 }
568
569 /* Initialize PLL for 10G */
570 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
571
572 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
573 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
574 if (err) {
575 dev_err(np->device, PFX "NIU Port %d "
576 "serdes_init_niu_10g_serdes: "
577 "mdio write to ESR2_TI_PLL_CFG_L failed", np->port);
578 return err;
579 }
580
581 pll_sts = PLL_CFG_ENPLL;
582
583 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
584 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
585 if (err) {
586 dev_err(np->device, PFX "NIU Port %d "
587 "serdes_init_niu_10g_serdes: "
588 "mdio write to ESR2_TI_PLL_STS_L failed", np->port);
589 return err;
590 }
591
592 udelay(200);
593
594 /* Initialize all 4 lanes of the SERDES. */
595 for (i = 0; i < 4; i++) {
596 err = esr2_set_tx_cfg(np, i, tx_cfg);
597 if (err)
598 return err;
599 }
600
601 for (i = 0; i < 4; i++) {
602 err = esr2_set_rx_cfg(np, i, rx_cfg);
603 if (err)
604 return err;
605 }
606
607 /* check if serdes is ready */
608
609 switch (np->port) {
610 case 0:
611 mask = ESR_INT_SIGNALS_P0_BITS;
612 val = (ESR_INT_SRDY0_P0 |
613 ESR_INT_DET0_P0 |
614 ESR_INT_XSRDY_P0 |
615 ESR_INT_XDP_P0_CH3 |
616 ESR_INT_XDP_P0_CH2 |
617 ESR_INT_XDP_P0_CH1 |
618 ESR_INT_XDP_P0_CH0);
619 break;
620
621 case 1:
622 mask = ESR_INT_SIGNALS_P1_BITS;
623 val = (ESR_INT_SRDY0_P1 |
624 ESR_INT_DET0_P1 |
625 ESR_INT_XSRDY_P1 |
626 ESR_INT_XDP_P1_CH3 |
627 ESR_INT_XDP_P1_CH2 |
628 ESR_INT_XDP_P1_CH1 |
629 ESR_INT_XDP_P1_CH0);
630 break;
631
632 default:
633 return -EINVAL;
634 }
635
636 while (max_retry--) {
637 sig = nr64(ESR_INT_SIGNALS);
638 if ((sig & mask) == val)
639 break;
640
641 mdelay(500);
642 }
643
644 if ((sig & mask) != val) {
645 pr_info(PFX "NIU Port %u signal bits [%08x] are not "
646 "[%08x] for 10G...trying 1G\n",
647 np->port, (int) (sig & mask), (int) val);
648
649 /* 10G failed, try initializing at 1G */
650 err = serdes_init_niu_1g_serdes(np);
651 if (!err) {
652 np->flags &= ~NIU_FLAGS_10G;
653 np->mac_xcvr = MAC_XCVR_PCS;
654 } else {
655 dev_err(np->device, PFX "Port %u 10G/1G SERDES "
656 "Link Failed \n", np->port);
657 return -ENODEV;
658 }
659 }
660 return 0;
661 }
662
663 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
664 {
665 int err;
666
667 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
668 if (err >= 0) {
669 *val = (err & 0xffff);
670 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
671 ESR_RXTX_CTRL_H(chan));
672 if (err >= 0)
673 *val |= ((err & 0xffff) << 16);
674 err = 0;
675 }
676 return err;
677 }
678
679 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
680 {
681 int err;
682
683 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
684 ESR_GLUE_CTRL0_L(chan));
685 if (err >= 0) {
686 *val = (err & 0xffff);
687 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
688 ESR_GLUE_CTRL0_H(chan));
689 if (err >= 0) {
690 *val |= ((err & 0xffff) << 16);
691 err = 0;
692 }
693 }
694 return err;
695 }
696
697 static int esr_read_reset(struct niu *np, u32 *val)
698 {
699 int err;
700
701 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
702 ESR_RXTX_RESET_CTRL_L);
703 if (err >= 0) {
704 *val = (err & 0xffff);
705 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
706 ESR_RXTX_RESET_CTRL_H);
707 if (err >= 0) {
708 *val |= ((err & 0xffff) << 16);
709 err = 0;
710 }
711 }
712 return err;
713 }
714
715 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
716 {
717 int err;
718
719 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
720 ESR_RXTX_CTRL_L(chan), val & 0xffff);
721 if (!err)
722 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
723 ESR_RXTX_CTRL_H(chan), (val >> 16));
724 return err;
725 }
726
727 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
728 {
729 int err;
730
731 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
732 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
733 if (!err)
734 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
735 ESR_GLUE_CTRL0_H(chan), (val >> 16));
736 return err;
737 }
738
739 static int esr_reset(struct niu *np)
740 {
741 u32 uninitialized_var(reset);
742 int err;
743
744 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
745 ESR_RXTX_RESET_CTRL_L, 0x0000);
746 if (err)
747 return err;
748 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
749 ESR_RXTX_RESET_CTRL_H, 0xffff);
750 if (err)
751 return err;
752 udelay(200);
753
754 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
755 ESR_RXTX_RESET_CTRL_L, 0xffff);
756 if (err)
757 return err;
758 udelay(200);
759
760 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
761 ESR_RXTX_RESET_CTRL_H, 0x0000);
762 if (err)
763 return err;
764 udelay(200);
765
766 err = esr_read_reset(np, &reset);
767 if (err)
768 return err;
769 if (reset != 0) {
770 dev_err(np->device, PFX "Port %u ESR_RESET "
771 "did not clear [%08x]\n",
772 np->port, reset);
773 return -ENODEV;
774 }
775
776 return 0;
777 }
778
779 static int serdes_init_10g(struct niu *np)
780 {
781 struct niu_link_config *lp = &np->link_config;
782 unsigned long ctrl_reg, test_cfg_reg, i;
783 u64 ctrl_val, test_cfg_val, sig, mask, val;
784 int err;
785
786 switch (np->port) {
787 case 0:
788 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
789 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
790 break;
791 case 1:
792 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
793 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
794 break;
795
796 default:
797 return -EINVAL;
798 }
799 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
800 ENET_SERDES_CTRL_SDET_1 |
801 ENET_SERDES_CTRL_SDET_2 |
802 ENET_SERDES_CTRL_SDET_3 |
803 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
804 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
805 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
806 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
807 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
808 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
809 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
810 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
811 test_cfg_val = 0;
812
813 if (lp->loopback_mode == LOOPBACK_PHY) {
814 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
815 ENET_SERDES_TEST_MD_0_SHIFT) |
816 (ENET_TEST_MD_PAD_LOOPBACK <<
817 ENET_SERDES_TEST_MD_1_SHIFT) |
818 (ENET_TEST_MD_PAD_LOOPBACK <<
819 ENET_SERDES_TEST_MD_2_SHIFT) |
820 (ENET_TEST_MD_PAD_LOOPBACK <<
821 ENET_SERDES_TEST_MD_3_SHIFT));
822 }
823
824 nw64(ctrl_reg, ctrl_val);
825 nw64(test_cfg_reg, test_cfg_val);
826
827 /* Initialize all 4 lanes of the SERDES. */
828 for (i = 0; i < 4; i++) {
829 u32 rxtx_ctrl, glue0;
830
831 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
832 if (err)
833 return err;
834 err = esr_read_glue0(np, i, &glue0);
835 if (err)
836 return err;
837
838 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
839 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
840 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
841
842 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
843 ESR_GLUE_CTRL0_THCNT |
844 ESR_GLUE_CTRL0_BLTIME);
845 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
846 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
847 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
848 (BLTIME_300_CYCLES <<
849 ESR_GLUE_CTRL0_BLTIME_SHIFT));
850
851 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
852 if (err)
853 return err;
854 err = esr_write_glue0(np, i, glue0);
855 if (err)
856 return err;
857 }
858
859 err = esr_reset(np);
860 if (err)
861 return err;
862
863 sig = nr64(ESR_INT_SIGNALS);
864 switch (np->port) {
865 case 0:
866 mask = ESR_INT_SIGNALS_P0_BITS;
867 val = (ESR_INT_SRDY0_P0 |
868 ESR_INT_DET0_P0 |
869 ESR_INT_XSRDY_P0 |
870 ESR_INT_XDP_P0_CH3 |
871 ESR_INT_XDP_P0_CH2 |
872 ESR_INT_XDP_P0_CH1 |
873 ESR_INT_XDP_P0_CH0);
874 break;
875
876 case 1:
877 mask = ESR_INT_SIGNALS_P1_BITS;
878 val = (ESR_INT_SRDY0_P1 |
879 ESR_INT_DET0_P1 |
880 ESR_INT_XSRDY_P1 |
881 ESR_INT_XDP_P1_CH3 |
882 ESR_INT_XDP_P1_CH2 |
883 ESR_INT_XDP_P1_CH1 |
884 ESR_INT_XDP_P1_CH0);
885 break;
886
887 default:
888 return -EINVAL;
889 }
890
891 if ((sig & mask) != val) {
892 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
893 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
894 return 0;
895 }
896 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
897 "[%08x]\n", np->port, (int) (sig & mask), (int) val);
898 return -ENODEV;
899 }
900 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
901 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
902 return 0;
903 }
904
905 static int serdes_init_1g(struct niu *np)
906 {
907 u64 val;
908
909 val = nr64(ENET_SERDES_1_PLL_CFG);
910 val &= ~ENET_SERDES_PLL_FBDIV2;
911 switch (np->port) {
912 case 0:
913 val |= ENET_SERDES_PLL_HRATE0;
914 break;
915 case 1:
916 val |= ENET_SERDES_PLL_HRATE1;
917 break;
918 case 2:
919 val |= ENET_SERDES_PLL_HRATE2;
920 break;
921 case 3:
922 val |= ENET_SERDES_PLL_HRATE3;
923 break;
924 default:
925 return -EINVAL;
926 }
927 nw64(ENET_SERDES_1_PLL_CFG, val);
928
929 return 0;
930 }
931
932 static int serdes_init_1g_serdes(struct niu *np)
933 {
934 struct niu_link_config *lp = &np->link_config;
935 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
936 u64 ctrl_val, test_cfg_val, sig, mask, val;
937 int err;
938 u64 reset_val, val_rd;
939
940 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
941 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
942 ENET_SERDES_PLL_FBDIV0;
943 switch (np->port) {
944 case 0:
945 reset_val = ENET_SERDES_RESET_0;
946 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
947 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
948 pll_cfg = ENET_SERDES_0_PLL_CFG;
949 break;
950 case 1:
951 reset_val = ENET_SERDES_RESET_1;
952 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
953 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
954 pll_cfg = ENET_SERDES_1_PLL_CFG;
955 break;
956
957 default:
958 return -EINVAL;
959 }
960 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
961 ENET_SERDES_CTRL_SDET_1 |
962 ENET_SERDES_CTRL_SDET_2 |
963 ENET_SERDES_CTRL_SDET_3 |
964 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
965 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
966 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
967 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
968 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
969 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
970 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
971 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
972 test_cfg_val = 0;
973
974 if (lp->loopback_mode == LOOPBACK_PHY) {
975 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
976 ENET_SERDES_TEST_MD_0_SHIFT) |
977 (ENET_TEST_MD_PAD_LOOPBACK <<
978 ENET_SERDES_TEST_MD_1_SHIFT) |
979 (ENET_TEST_MD_PAD_LOOPBACK <<
980 ENET_SERDES_TEST_MD_2_SHIFT) |
981 (ENET_TEST_MD_PAD_LOOPBACK <<
982 ENET_SERDES_TEST_MD_3_SHIFT));
983 }
984
985 nw64(ENET_SERDES_RESET, reset_val);
986 mdelay(20);
987 val_rd = nr64(ENET_SERDES_RESET);
988 val_rd &= ~reset_val;
989 nw64(pll_cfg, val);
990 nw64(ctrl_reg, ctrl_val);
991 nw64(test_cfg_reg, test_cfg_val);
992 nw64(ENET_SERDES_RESET, val_rd);
993 mdelay(2000);
994
995 /* Initialize all 4 lanes of the SERDES. */
996 for (i = 0; i < 4; i++) {
997 u32 rxtx_ctrl, glue0;
998
999 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
1000 if (err)
1001 return err;
1002 err = esr_read_glue0(np, i, &glue0);
1003 if (err)
1004 return err;
1005
1006 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
1007 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
1008 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
1009
1010 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
1011 ESR_GLUE_CTRL0_THCNT |
1012 ESR_GLUE_CTRL0_BLTIME);
1013 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
1014 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
1015 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
1016 (BLTIME_300_CYCLES <<
1017 ESR_GLUE_CTRL0_BLTIME_SHIFT));
1018
1019 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
1020 if (err)
1021 return err;
1022 err = esr_write_glue0(np, i, glue0);
1023 if (err)
1024 return err;
1025 }
1026
1027
1028 sig = nr64(ESR_INT_SIGNALS);
1029 switch (np->port) {
1030 case 0:
1031 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1032 mask = val;
1033 break;
1034
1035 case 1:
1036 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1037 mask = val;
1038 break;
1039
1040 default:
1041 return -EINVAL;
1042 }
1043
1044 if ((sig & mask) != val) {
1045 dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
1046 "[%08x]\n", np->port, (int) (sig & mask), (int) val);
1047 return -ENODEV;
1048 }
1049
1050 return 0;
1051 }
1052
1053 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1054 {
1055 struct niu_link_config *lp = &np->link_config;
1056 int link_up;
1057 u64 val;
1058 u16 current_speed;
1059 unsigned long flags;
1060 u8 current_duplex;
1061
1062 link_up = 0;
1063 current_speed = SPEED_INVALID;
1064 current_duplex = DUPLEX_INVALID;
1065
1066 spin_lock_irqsave(&np->lock, flags);
1067
1068 val = nr64_pcs(PCS_MII_STAT);
1069
1070 if (val & PCS_MII_STAT_LINK_STATUS) {
1071 link_up = 1;
1072 current_speed = SPEED_1000;
1073 current_duplex = DUPLEX_FULL;
1074 }
1075
1076 lp->active_speed = current_speed;
1077 lp->active_duplex = current_duplex;
1078 spin_unlock_irqrestore(&np->lock, flags);
1079
1080 *link_up_p = link_up;
1081 return 0;
1082 }
1083
1084 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1085 {
1086 unsigned long flags;
1087 struct niu_link_config *lp = &np->link_config;
1088 int link_up = 0;
1089 int link_ok = 1;
1090 u64 val, val2;
1091 u16 current_speed;
1092 u8 current_duplex;
1093
1094 if (!(np->flags & NIU_FLAGS_10G))
1095 return link_status_1g_serdes(np, link_up_p);
1096
1097 current_speed = SPEED_INVALID;
1098 current_duplex = DUPLEX_INVALID;
1099 spin_lock_irqsave(&np->lock, flags);
1100
1101 val = nr64_xpcs(XPCS_STATUS(0));
1102 val2 = nr64_mac(XMAC_INTER2);
1103 if (val2 & 0x01000000)
1104 link_ok = 0;
1105
1106 if ((val & 0x1000ULL) && link_ok) {
1107 link_up = 1;
1108 current_speed = SPEED_10000;
1109 current_duplex = DUPLEX_FULL;
1110 }
1111 lp->active_speed = current_speed;
1112 lp->active_duplex = current_duplex;
1113 spin_unlock_irqrestore(&np->lock, flags);
1114 *link_up_p = link_up;
1115 return 0;
1116 }
1117
1118 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1119 {
1120 struct niu_link_config *lp = &np->link_config;
1121 u16 current_speed, bmsr;
1122 unsigned long flags;
1123 u8 current_duplex;
1124 int err, link_up;
1125
1126 link_up = 0;
1127 current_speed = SPEED_INVALID;
1128 current_duplex = DUPLEX_INVALID;
1129
1130 spin_lock_irqsave(&np->lock, flags);
1131
1132 err = -EINVAL;
1133
1134 err = mii_read(np, np->phy_addr, MII_BMSR);
1135 if (err < 0)
1136 goto out;
1137
1138 bmsr = err;
1139 if (bmsr & BMSR_LSTATUS) {
1140 u16 adv, lpa, common, estat;
1141
1142 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1143 if (err < 0)
1144 goto out;
1145 adv = err;
1146
1147 err = mii_read(np, np->phy_addr, MII_LPA);
1148 if (err < 0)
1149 goto out;
1150 lpa = err;
1151
1152 common = adv & lpa;
1153
1154 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1155 if (err < 0)
1156 goto out;
1157 estat = err;
1158 link_up = 1;
1159 current_speed = SPEED_1000;
1160 current_duplex = DUPLEX_FULL;
1161
1162 }
1163 lp->active_speed = current_speed;
1164 lp->active_duplex = current_duplex;
1165 err = 0;
1166
1167 out:
1168 spin_unlock_irqrestore(&np->lock, flags);
1169
1170 *link_up_p = link_up;
1171 return err;
1172 }
1173
1174 static int bcm8704_reset(struct niu *np)
1175 {
1176 int err, limit;
1177
1178 err = mdio_read(np, np->phy_addr,
1179 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1180 if (err < 0)
1181 return err;
1182 err |= BMCR_RESET;
1183 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1184 MII_BMCR, err);
1185 if (err)
1186 return err;
1187
1188 limit = 1000;
1189 while (--limit >= 0) {
1190 err = mdio_read(np, np->phy_addr,
1191 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1192 if (err < 0)
1193 return err;
1194 if (!(err & BMCR_RESET))
1195 break;
1196 }
1197 if (limit < 0) {
1198 dev_err(np->device, PFX "Port %u PHY will not reset "
1199 "(bmcr=%04x)\n", np->port, (err & 0xffff));
1200 return -ENODEV;
1201 }
1202 return 0;
1203 }
1204
1205 /* When written, certain PHY registers need to be read back twice
1206 * in order for the bits to settle properly.
1207 */
1208 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1209 {
1210 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1211 if (err < 0)
1212 return err;
1213 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1214 if (err < 0)
1215 return err;
1216 return 0;
1217 }
1218
1219 static int bcm8706_init_user_dev3(struct niu *np)
1220 {
1221 int err;
1222
1223
1224 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1225 BCM8704_USER_OPT_DIGITAL_CTRL);
1226 if (err < 0)
1227 return err;
1228 err &= ~USER_ODIG_CTRL_GPIOS;
1229 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1230 err |= USER_ODIG_CTRL_RESV2;
1231 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1232 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1233 if (err)
1234 return err;
1235
1236 mdelay(1000);
1237
1238 return 0;
1239 }
1240
1241 static int bcm8704_init_user_dev3(struct niu *np)
1242 {
1243 int err;
1244
1245 err = mdio_write(np, np->phy_addr,
1246 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1247 (USER_CONTROL_OPTXRST_LVL |
1248 USER_CONTROL_OPBIASFLT_LVL |
1249 USER_CONTROL_OBTMPFLT_LVL |
1250 USER_CONTROL_OPPRFLT_LVL |
1251 USER_CONTROL_OPTXFLT_LVL |
1252 USER_CONTROL_OPRXLOS_LVL |
1253 USER_CONTROL_OPRXFLT_LVL |
1254 USER_CONTROL_OPTXON_LVL |
1255 (0x3f << USER_CONTROL_RES1_SHIFT)));
1256 if (err)
1257 return err;
1258
1259 err = mdio_write(np, np->phy_addr,
1260 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1261 (USER_PMD_TX_CTL_XFP_CLKEN |
1262 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1263 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1264 USER_PMD_TX_CTL_TSCK_LPWREN));
1265 if (err)
1266 return err;
1267
1268 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1269 if (err)
1270 return err;
1271 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1272 if (err)
1273 return err;
1274
1275 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1276 BCM8704_USER_OPT_DIGITAL_CTRL);
1277 if (err < 0)
1278 return err;
1279 err &= ~USER_ODIG_CTRL_GPIOS;
1280 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1281 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1282 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1283 if (err)
1284 return err;
1285
1286 mdelay(1000);
1287
1288 return 0;
1289 }
1290
1291 static int mrvl88x2011_act_led(struct niu *np, int val)
1292 {
1293 int err;
1294
1295 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1296 MRVL88X2011_LED_8_TO_11_CTL);
1297 if (err < 0)
1298 return err;
1299
1300 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1301 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1302
1303 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1304 MRVL88X2011_LED_8_TO_11_CTL, err);
1305 }
1306
1307 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1308 {
1309 int err;
1310
1311 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1312 MRVL88X2011_LED_BLINK_CTL);
1313 if (err >= 0) {
1314 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1315 err |= (rate << 4);
1316
1317 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1318 MRVL88X2011_LED_BLINK_CTL, err);
1319 }
1320
1321 return err;
1322 }
1323
1324 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1325 {
1326 int err;
1327
1328 /* Set LED functions */
1329 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1330 if (err)
1331 return err;
1332
1333 /* led activity */
1334 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1335 if (err)
1336 return err;
1337
1338 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1339 MRVL88X2011_GENERAL_CTL);
1340 if (err < 0)
1341 return err;
1342
1343 err |= MRVL88X2011_ENA_XFPREFCLK;
1344
1345 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1346 MRVL88X2011_GENERAL_CTL, err);
1347 if (err < 0)
1348 return err;
1349
1350 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1351 MRVL88X2011_PMA_PMD_CTL_1);
1352 if (err < 0)
1353 return err;
1354
1355 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1356 err |= MRVL88X2011_LOOPBACK;
1357 else
1358 err &= ~MRVL88X2011_LOOPBACK;
1359
1360 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1361 MRVL88X2011_PMA_PMD_CTL_1, err);
1362 if (err < 0)
1363 return err;
1364
1365 /* Enable PMD */
1366 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1367 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1368 }
1369
1370
1371 static int xcvr_diag_bcm870x(struct niu *np)
1372 {
1373 u16 analog_stat0, tx_alarm_status;
1374 int err = 0;
1375
1376 #if 1
1377 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1378 MII_STAT1000);
1379 if (err < 0)
1380 return err;
1381 pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
1382 np->port, err);
1383
1384 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1385 if (err < 0)
1386 return err;
1387 pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
1388 np->port, err);
1389
1390 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1391 MII_NWAYTEST);
1392 if (err < 0)
1393 return err;
1394 pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
1395 np->port, err);
1396 #endif
1397
1398 /* XXX dig this out it might not be so useful XXX */
1399 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1400 BCM8704_USER_ANALOG_STATUS0);
1401 if (err < 0)
1402 return err;
1403 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1404 BCM8704_USER_ANALOG_STATUS0);
1405 if (err < 0)
1406 return err;
1407 analog_stat0 = err;
1408
1409 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1410 BCM8704_USER_TX_ALARM_STATUS);
1411 if (err < 0)
1412 return err;
1413 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1414 BCM8704_USER_TX_ALARM_STATUS);
1415 if (err < 0)
1416 return err;
1417 tx_alarm_status = err;
1418
1419 if (analog_stat0 != 0x03fc) {
1420 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1421 pr_info(PFX "Port %u cable not connected "
1422 "or bad cable.\n", np->port);
1423 } else if (analog_stat0 == 0x639c) {
1424 pr_info(PFX "Port %u optical module is bad "
1425 "or missing.\n", np->port);
1426 }
1427 }
1428
1429 return 0;
1430 }
1431
1432 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1433 {
1434 struct niu_link_config *lp = &np->link_config;
1435 int err;
1436
1437 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1438 MII_BMCR);
1439 if (err < 0)
1440 return err;
1441
1442 err &= ~BMCR_LOOPBACK;
1443
1444 if (lp->loopback_mode == LOOPBACK_MAC)
1445 err |= BMCR_LOOPBACK;
1446
1447 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1448 MII_BMCR, err);
1449 if (err)
1450 return err;
1451
1452 return 0;
1453 }
1454
1455 static int xcvr_init_10g_bcm8706(struct niu *np)
1456 {
1457 int err = 0;
1458 u64 val;
1459
1460 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1461 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1462 return err;
1463
1464 val = nr64_mac(XMAC_CONFIG);
1465 val &= ~XMAC_CONFIG_LED_POLARITY;
1466 val |= XMAC_CONFIG_FORCE_LED_ON;
1467 nw64_mac(XMAC_CONFIG, val);
1468
1469 val = nr64(MIF_CONFIG);
1470 val |= MIF_CONFIG_INDIRECT_MODE;
1471 nw64(MIF_CONFIG, val);
1472
1473 err = bcm8704_reset(np);
1474 if (err)
1475 return err;
1476
1477 err = xcvr_10g_set_lb_bcm870x(np);
1478 if (err)
1479 return err;
1480
1481 err = bcm8706_init_user_dev3(np);
1482 if (err)
1483 return err;
1484
1485 err = xcvr_diag_bcm870x(np);
1486 if (err)
1487 return err;
1488
1489 return 0;
1490 }
1491
1492 static int xcvr_init_10g_bcm8704(struct niu *np)
1493 {
1494 int err;
1495
1496 err = bcm8704_reset(np);
1497 if (err)
1498 return err;
1499
1500 err = bcm8704_init_user_dev3(np);
1501 if (err)
1502 return err;
1503
1504 err = xcvr_10g_set_lb_bcm870x(np);
1505 if (err)
1506 return err;
1507
1508 err = xcvr_diag_bcm870x(np);
1509 if (err)
1510 return err;
1511
1512 return 0;
1513 }
1514
1515 static int xcvr_init_10g(struct niu *np)
1516 {
1517 int phy_id, err;
1518 u64 val;
1519
1520 val = nr64_mac(XMAC_CONFIG);
1521 val &= ~XMAC_CONFIG_LED_POLARITY;
1522 val |= XMAC_CONFIG_FORCE_LED_ON;
1523 nw64_mac(XMAC_CONFIG, val);
1524
1525 /* XXX shared resource, lock parent XXX */
1526 val = nr64(MIF_CONFIG);
1527 val |= MIF_CONFIG_INDIRECT_MODE;
1528 nw64(MIF_CONFIG, val);
1529
1530 phy_id = phy_decode(np->parent->port_phy, np->port);
1531 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1532
1533 /* handle different phy types */
1534 switch (phy_id & NIU_PHY_ID_MASK) {
1535 case NIU_PHY_ID_MRVL88X2011:
1536 err = xcvr_init_10g_mrvl88x2011(np);
1537 break;
1538
1539 default: /* bcom 8704 */
1540 err = xcvr_init_10g_bcm8704(np);
1541 break;
1542 }
1543
1544 return 0;
1545 }
1546
1547 static int mii_reset(struct niu *np)
1548 {
1549 int limit, err;
1550
1551 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1552 if (err)
1553 return err;
1554
1555 limit = 1000;
1556 while (--limit >= 0) {
1557 udelay(500);
1558 err = mii_read(np, np->phy_addr, MII_BMCR);
1559 if (err < 0)
1560 return err;
1561 if (!(err & BMCR_RESET))
1562 break;
1563 }
1564 if (limit < 0) {
1565 dev_err(np->device, PFX "Port %u MII would not reset, "
1566 "bmcr[%04x]\n", np->port, err);
1567 return -ENODEV;
1568 }
1569
1570 return 0;
1571 }
1572
1573 static int xcvr_init_1g_rgmii(struct niu *np)
1574 {
1575 int err;
1576 u64 val;
1577 u16 bmcr, bmsr, estat;
1578
1579 val = nr64(MIF_CONFIG);
1580 val &= ~MIF_CONFIG_INDIRECT_MODE;
1581 nw64(MIF_CONFIG, val);
1582
1583 err = mii_reset(np);
1584 if (err)
1585 return err;
1586
1587 err = mii_read(np, np->phy_addr, MII_BMSR);
1588 if (err < 0)
1589 return err;
1590 bmsr = err;
1591
1592 estat = 0;
1593 if (bmsr & BMSR_ESTATEN) {
1594 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1595 if (err < 0)
1596 return err;
1597 estat = err;
1598 }
1599
1600 bmcr = 0;
1601 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1602 if (err)
1603 return err;
1604
1605 if (bmsr & BMSR_ESTATEN) {
1606 u16 ctrl1000 = 0;
1607
1608 if (estat & ESTATUS_1000_TFULL)
1609 ctrl1000 |= ADVERTISE_1000FULL;
1610 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1611 if (err)
1612 return err;
1613 }
1614
1615 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1616
1617 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1618 if (err)
1619 return err;
1620
1621 err = mii_read(np, np->phy_addr, MII_BMCR);
1622 if (err < 0)
1623 return err;
1624 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1625
1626 err = mii_read(np, np->phy_addr, MII_BMSR);
1627 if (err < 0)
1628 return err;
1629
1630 return 0;
1631 }
1632
1633 static int mii_init_common(struct niu *np)
1634 {
1635 struct niu_link_config *lp = &np->link_config;
1636 u16 bmcr, bmsr, adv, estat;
1637 int err;
1638
1639 err = mii_reset(np);
1640 if (err)
1641 return err;
1642
1643 err = mii_read(np, np->phy_addr, MII_BMSR);
1644 if (err < 0)
1645 return err;
1646 bmsr = err;
1647
1648 estat = 0;
1649 if (bmsr & BMSR_ESTATEN) {
1650 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1651 if (err < 0)
1652 return err;
1653 estat = err;
1654 }
1655
1656 bmcr = 0;
1657 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1658 if (err)
1659 return err;
1660
1661 if (lp->loopback_mode == LOOPBACK_MAC) {
1662 bmcr |= BMCR_LOOPBACK;
1663 if (lp->active_speed == SPEED_1000)
1664 bmcr |= BMCR_SPEED1000;
1665 if (lp->active_duplex == DUPLEX_FULL)
1666 bmcr |= BMCR_FULLDPLX;
1667 }
1668
1669 if (lp->loopback_mode == LOOPBACK_PHY) {
1670 u16 aux;
1671
1672 aux = (BCM5464R_AUX_CTL_EXT_LB |
1673 BCM5464R_AUX_CTL_WRITE_1);
1674 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1675 if (err)
1676 return err;
1677 }
1678
1679 /* XXX configurable XXX */
1680 /* XXX for now don't advertise half-duplex or asym pause... XXX */
1681 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1682 if (bmsr & BMSR_10FULL)
1683 adv |= ADVERTISE_10FULL;
1684 if (bmsr & BMSR_100FULL)
1685 adv |= ADVERTISE_100FULL;
1686 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1687 if (err)
1688 return err;
1689
1690 if (bmsr & BMSR_ESTATEN) {
1691 u16 ctrl1000 = 0;
1692
1693 if (estat & ESTATUS_1000_TFULL)
1694 ctrl1000 |= ADVERTISE_1000FULL;
1695 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1696 if (err)
1697 return err;
1698 }
1699 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1700
1701 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1702 if (err)
1703 return err;
1704
1705 err = mii_read(np, np->phy_addr, MII_BMCR);
1706 if (err < 0)
1707 return err;
1708 err = mii_read(np, np->phy_addr, MII_BMSR);
1709 if (err < 0)
1710 return err;
1711 #if 0
1712 pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1713 np->port, bmcr, bmsr);
1714 #endif
1715
1716 return 0;
1717 }
1718
1719 static int xcvr_init_1g(struct niu *np)
1720 {
1721 u64 val;
1722
1723 /* XXX shared resource, lock parent XXX */
1724 val = nr64(MIF_CONFIG);
1725 val &= ~MIF_CONFIG_INDIRECT_MODE;
1726 nw64(MIF_CONFIG, val);
1727
1728 return mii_init_common(np);
1729 }
1730
1731 static int niu_xcvr_init(struct niu *np)
1732 {
1733 const struct niu_phy_ops *ops = np->phy_ops;
1734 int err;
1735
1736 err = 0;
1737 if (ops->xcvr_init)
1738 err = ops->xcvr_init(np);
1739
1740 return err;
1741 }
1742
1743 static int niu_serdes_init(struct niu *np)
1744 {
1745 const struct niu_phy_ops *ops = np->phy_ops;
1746 int err;
1747
1748 err = 0;
1749 if (ops->serdes_init)
1750 err = ops->serdes_init(np);
1751
1752 return err;
1753 }
1754
1755 static void niu_init_xif(struct niu *);
1756 static void niu_handle_led(struct niu *, int status);
1757
1758 static int niu_link_status_common(struct niu *np, int link_up)
1759 {
1760 struct niu_link_config *lp = &np->link_config;
1761 struct net_device *dev = np->dev;
1762 unsigned long flags;
1763
1764 if (!netif_carrier_ok(dev) && link_up) {
1765 niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
1766 dev->name,
1767 (lp->active_speed == SPEED_10000 ?
1768 "10Gb/sec" :
1769 (lp->active_speed == SPEED_1000 ?
1770 "1Gb/sec" :
1771 (lp->active_speed == SPEED_100 ?
1772 "100Mbit/sec" : "10Mbit/sec"))),
1773 (lp->active_duplex == DUPLEX_FULL ?
1774 "full" : "half"));
1775
1776 spin_lock_irqsave(&np->lock, flags);
1777 niu_init_xif(np);
1778 niu_handle_led(np, 1);
1779 spin_unlock_irqrestore(&np->lock, flags);
1780
1781 netif_carrier_on(dev);
1782 } else if (netif_carrier_ok(dev) && !link_up) {
1783 niuwarn(LINK, "%s: Link is down\n", dev->name);
1784 spin_lock_irqsave(&np->lock, flags);
1785 niu_handle_led(np, 0);
1786 spin_unlock_irqrestore(&np->lock, flags);
1787 netif_carrier_off(dev);
1788 }
1789
1790 return 0;
1791 }
1792
1793 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1794 {
1795 int err, link_up, pma_status, pcs_status;
1796
1797 link_up = 0;
1798
1799 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1800 MRVL88X2011_10G_PMD_STATUS_2);
1801 if (err < 0)
1802 goto out;
1803
1804 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1805 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1806 MRVL88X2011_PMA_PMD_STATUS_1);
1807 if (err < 0)
1808 goto out;
1809
1810 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1811
1812 /* Check PMC Register : 3.0001.2 == 1: read twice */
1813 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1814 MRVL88X2011_PMA_PMD_STATUS_1);
1815 if (err < 0)
1816 goto out;
1817
1818 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1819 MRVL88X2011_PMA_PMD_STATUS_1);
1820 if (err < 0)
1821 goto out;
1822
1823 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1824
1825 /* Check XGXS Register : 4.0018.[0-3,12] */
1826 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1827 MRVL88X2011_10G_XGXS_LANE_STAT);
1828 if (err < 0)
1829 goto out;
1830
1831 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1832 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1833 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1834 0x800))
1835 link_up = (pma_status && pcs_status) ? 1 : 0;
1836
1837 np->link_config.active_speed = SPEED_10000;
1838 np->link_config.active_duplex = DUPLEX_FULL;
1839 err = 0;
1840 out:
1841 mrvl88x2011_act_led(np, (link_up ?
1842 MRVL88X2011_LED_CTL_PCS_ACT :
1843 MRVL88X2011_LED_CTL_OFF));
1844
1845 *link_up_p = link_up;
1846 return err;
1847 }
1848
1849 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1850 {
1851 int err, link_up;
1852 link_up = 0;
1853
1854 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1855 BCM8704_PMD_RCV_SIGDET);
1856 if (err < 0)
1857 goto out;
1858 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1859 err = 0;
1860 goto out;
1861 }
1862
1863 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1864 BCM8704_PCS_10G_R_STATUS);
1865 if (err < 0)
1866 goto out;
1867
1868 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1869 err = 0;
1870 goto out;
1871 }
1872
1873 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1874 BCM8704_PHYXS_XGXS_LANE_STAT);
1875 if (err < 0)
1876 goto out;
1877 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1878 PHYXS_XGXS_LANE_STAT_MAGIC |
1879 PHYXS_XGXS_LANE_STAT_PATTEST |
1880 PHYXS_XGXS_LANE_STAT_LANE3 |
1881 PHYXS_XGXS_LANE_STAT_LANE2 |
1882 PHYXS_XGXS_LANE_STAT_LANE1 |
1883 PHYXS_XGXS_LANE_STAT_LANE0)) {
1884 err = 0;
1885 np->link_config.active_speed = SPEED_INVALID;
1886 np->link_config.active_duplex = DUPLEX_INVALID;
1887 goto out;
1888 }
1889
1890 link_up = 1;
1891 np->link_config.active_speed = SPEED_10000;
1892 np->link_config.active_duplex = DUPLEX_FULL;
1893 err = 0;
1894
1895 out:
1896 *link_up_p = link_up;
1897 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
1898 err = 0;
1899 return err;
1900 }
1901
1902 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
1903 {
1904 int err, link_up;
1905
1906 link_up = 0;
1907
1908 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1909 BCM8704_PMD_RCV_SIGDET);
1910 if (err < 0)
1911 goto out;
1912 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1913 err = 0;
1914 goto out;
1915 }
1916
1917 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1918 BCM8704_PCS_10G_R_STATUS);
1919 if (err < 0)
1920 goto out;
1921 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1922 err = 0;
1923 goto out;
1924 }
1925
1926 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1927 BCM8704_PHYXS_XGXS_LANE_STAT);
1928 if (err < 0)
1929 goto out;
1930
1931 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
1932 PHYXS_XGXS_LANE_STAT_MAGIC |
1933 PHYXS_XGXS_LANE_STAT_LANE3 |
1934 PHYXS_XGXS_LANE_STAT_LANE2 |
1935 PHYXS_XGXS_LANE_STAT_LANE1 |
1936 PHYXS_XGXS_LANE_STAT_LANE0)) {
1937 err = 0;
1938 goto out;
1939 }
1940
1941 link_up = 1;
1942 np->link_config.active_speed = SPEED_10000;
1943 np->link_config.active_duplex = DUPLEX_FULL;
1944 err = 0;
1945
1946 out:
1947 *link_up_p = link_up;
1948 return err;
1949 }
1950
1951 static int link_status_10g(struct niu *np, int *link_up_p)
1952 {
1953 unsigned long flags;
1954 int err = -EINVAL;
1955
1956 spin_lock_irqsave(&np->lock, flags);
1957
1958 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
1959 int phy_id;
1960
1961 phy_id = phy_decode(np->parent->port_phy, np->port);
1962 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1963
1964 /* handle different phy types */
1965 switch (phy_id & NIU_PHY_ID_MASK) {
1966 case NIU_PHY_ID_MRVL88X2011:
1967 err = link_status_10g_mrvl(np, link_up_p);
1968 break;
1969
1970 default: /* bcom 8704 */
1971 err = link_status_10g_bcom(np, link_up_p);
1972 break;
1973 }
1974 }
1975
1976 spin_unlock_irqrestore(&np->lock, flags);
1977
1978 return err;
1979 }
1980
1981 static int niu_10g_phy_present(struct niu *np)
1982 {
1983 u64 sig, mask, val;
1984
1985 sig = nr64(ESR_INT_SIGNALS);
1986 switch (np->port) {
1987 case 0:
1988 mask = ESR_INT_SIGNALS_P0_BITS;
1989 val = (ESR_INT_SRDY0_P0 |
1990 ESR_INT_DET0_P0 |
1991 ESR_INT_XSRDY_P0 |
1992 ESR_INT_XDP_P0_CH3 |
1993 ESR_INT_XDP_P0_CH2 |
1994 ESR_INT_XDP_P0_CH1 |
1995 ESR_INT_XDP_P0_CH0);
1996 break;
1997
1998 case 1:
1999 mask = ESR_INT_SIGNALS_P1_BITS;
2000 val = (ESR_INT_SRDY0_P1 |
2001 ESR_INT_DET0_P1 |
2002 ESR_INT_XSRDY_P1 |
2003 ESR_INT_XDP_P1_CH3 |
2004 ESR_INT_XDP_P1_CH2 |
2005 ESR_INT_XDP_P1_CH1 |
2006 ESR_INT_XDP_P1_CH0);
2007 break;
2008
2009 default:
2010 return 0;
2011 }
2012
2013 if ((sig & mask) != val)
2014 return 0;
2015 return 1;
2016 }
2017
2018 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2019 {
2020 unsigned long flags;
2021 int err = 0;
2022 int phy_present;
2023 int phy_present_prev;
2024
2025 spin_lock_irqsave(&np->lock, flags);
2026
2027 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2028 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2029 1 : 0;
2030 phy_present = niu_10g_phy_present(np);
2031 if (phy_present != phy_present_prev) {
2032 /* state change */
2033 if (phy_present) {
2034 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2035 if (np->phy_ops->xcvr_init)
2036 err = np->phy_ops->xcvr_init(np);
2037 if (err) {
2038 /* debounce */
2039 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2040 }
2041 } else {
2042 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2043 *link_up_p = 0;
2044 niuwarn(LINK, "%s: Hotplug PHY Removed\n",
2045 np->dev->name);
2046 }
2047 }
2048 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT)
2049 err = link_status_10g_bcm8706(np, link_up_p);
2050 }
2051
2052 spin_unlock_irqrestore(&np->lock, flags);
2053
2054 return err;
2055 }
2056
2057 static int link_status_1g(struct niu *np, int *link_up_p)
2058 {
2059 struct niu_link_config *lp = &np->link_config;
2060 u16 current_speed, bmsr;
2061 unsigned long flags;
2062 u8 current_duplex;
2063 int err, link_up;
2064
2065 link_up = 0;
2066 current_speed = SPEED_INVALID;
2067 current_duplex = DUPLEX_INVALID;
2068
2069 spin_lock_irqsave(&np->lock, flags);
2070
2071 err = -EINVAL;
2072 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
2073 goto out;
2074
2075 err = mii_read(np, np->phy_addr, MII_BMSR);
2076 if (err < 0)
2077 goto out;
2078
2079 bmsr = err;
2080 if (bmsr & BMSR_LSTATUS) {
2081 u16 adv, lpa, common, estat;
2082
2083 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
2084 if (err < 0)
2085 goto out;
2086 adv = err;
2087
2088 err = mii_read(np, np->phy_addr, MII_LPA);
2089 if (err < 0)
2090 goto out;
2091 lpa = err;
2092
2093 common = adv & lpa;
2094
2095 err = mii_read(np, np->phy_addr, MII_ESTATUS);
2096 if (err < 0)
2097 goto out;
2098 estat = err;
2099
2100 link_up = 1;
2101 if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
2102 current_speed = SPEED_1000;
2103 if (estat & ESTATUS_1000_TFULL)
2104 current_duplex = DUPLEX_FULL;
2105 else
2106 current_duplex = DUPLEX_HALF;
2107 } else {
2108 if (common & ADVERTISE_100BASE4) {
2109 current_speed = SPEED_100;
2110 current_duplex = DUPLEX_HALF;
2111 } else if (common & ADVERTISE_100FULL) {
2112 current_speed = SPEED_100;
2113 current_duplex = DUPLEX_FULL;
2114 } else if (common & ADVERTISE_100HALF) {
2115 current_speed = SPEED_100;
2116 current_duplex = DUPLEX_HALF;
2117 } else if (common & ADVERTISE_10FULL) {
2118 current_speed = SPEED_10;
2119 current_duplex = DUPLEX_FULL;
2120 } else if (common & ADVERTISE_10HALF) {
2121 current_speed = SPEED_10;
2122 current_duplex = DUPLEX_HALF;
2123 } else
2124 link_up = 0;
2125 }
2126 }
2127 lp->active_speed = current_speed;
2128 lp->active_duplex = current_duplex;
2129 err = 0;
2130
2131 out:
2132 spin_unlock_irqrestore(&np->lock, flags);
2133
2134 *link_up_p = link_up;
2135 return err;
2136 }
2137
2138 static int niu_link_status(struct niu *np, int *link_up_p)
2139 {
2140 const struct niu_phy_ops *ops = np->phy_ops;
2141 int err;
2142
2143 err = 0;
2144 if (ops->link_status)
2145 err = ops->link_status(np, link_up_p);
2146
2147 return err;
2148 }
2149
2150 static void niu_timer(unsigned long __opaque)
2151 {
2152 struct niu *np = (struct niu *) __opaque;
2153 unsigned long off;
2154 int err, link_up;
2155
2156 err = niu_link_status(np, &link_up);
2157 if (!err)
2158 niu_link_status_common(np, link_up);
2159
2160 if (netif_carrier_ok(np->dev))
2161 off = 5 * HZ;
2162 else
2163 off = 1 * HZ;
2164 np->timer.expires = jiffies + off;
2165
2166 add_timer(&np->timer);
2167 }
2168
2169 static const struct niu_phy_ops phy_ops_10g_serdes = {
2170 .serdes_init = serdes_init_10g_serdes,
2171 .link_status = link_status_10g_serdes,
2172 };
2173
2174 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2175 .serdes_init = serdes_init_niu_10g_serdes,
2176 .link_status = link_status_10g_serdes,
2177 };
2178
2179 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2180 .serdes_init = serdes_init_niu_1g_serdes,
2181 .link_status = link_status_1g_serdes,
2182 };
2183
2184 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2185 .xcvr_init = xcvr_init_1g_rgmii,
2186 .link_status = link_status_1g_rgmii,
2187 };
2188
2189 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2190 .serdes_init = serdes_init_niu_10g_fiber,
2191 .xcvr_init = xcvr_init_10g,
2192 .link_status = link_status_10g,
2193 };
2194
2195 static const struct niu_phy_ops phy_ops_10g_fiber = {
2196 .serdes_init = serdes_init_10g,
2197 .xcvr_init = xcvr_init_10g,
2198 .link_status = link_status_10g,
2199 };
2200
2201 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2202 .serdes_init = serdes_init_10g,
2203 .xcvr_init = xcvr_init_10g_bcm8706,
2204 .link_status = link_status_10g_hotplug,
2205 };
2206
2207 static const struct niu_phy_ops phy_ops_10g_copper = {
2208 .serdes_init = serdes_init_10g,
2209 .link_status = link_status_10g, /* XXX */
2210 };
2211
2212 static const struct niu_phy_ops phy_ops_1g_fiber = {
2213 .serdes_init = serdes_init_1g,
2214 .xcvr_init = xcvr_init_1g,
2215 .link_status = link_status_1g,
2216 };
2217
2218 static const struct niu_phy_ops phy_ops_1g_copper = {
2219 .xcvr_init = xcvr_init_1g,
2220 .link_status = link_status_1g,
2221 };
2222
2223 struct niu_phy_template {
2224 const struct niu_phy_ops *ops;
2225 u32 phy_addr_base;
2226 };
2227
2228 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2229 .ops = &phy_ops_10g_fiber_niu,
2230 .phy_addr_base = 16,
2231 };
2232
2233 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2234 .ops = &phy_ops_10g_serdes_niu,
2235 .phy_addr_base = 0,
2236 };
2237
2238 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2239 .ops = &phy_ops_1g_serdes_niu,
2240 .phy_addr_base = 0,
2241 };
2242
2243 static const struct niu_phy_template phy_template_10g_fiber = {
2244 .ops = &phy_ops_10g_fiber,
2245 .phy_addr_base = 8,
2246 };
2247
2248 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2249 .ops = &phy_ops_10g_fiber_hotplug,
2250 .phy_addr_base = 8,
2251 };
2252
2253 static const struct niu_phy_template phy_template_10g_copper = {
2254 .ops = &phy_ops_10g_copper,
2255 .phy_addr_base = 10,
2256 };
2257
2258 static const struct niu_phy_template phy_template_1g_fiber = {
2259 .ops = &phy_ops_1g_fiber,
2260 .phy_addr_base = 0,
2261 };
2262
2263 static const struct niu_phy_template phy_template_1g_copper = {
2264 .ops = &phy_ops_1g_copper,
2265 .phy_addr_base = 0,
2266 };
2267
2268 static const struct niu_phy_template phy_template_1g_rgmii = {
2269 .ops = &phy_ops_1g_rgmii,
2270 .phy_addr_base = 0,
2271 };
2272
2273 static const struct niu_phy_template phy_template_10g_serdes = {
2274 .ops = &phy_ops_10g_serdes,
2275 .phy_addr_base = 0,
2276 };
2277
2278 static int niu_atca_port_num[4] = {
2279 0, 0, 11, 10
2280 };
2281
2282 static int serdes_init_10g_serdes(struct niu *np)
2283 {
2284 struct niu_link_config *lp = &np->link_config;
2285 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2286 u64 ctrl_val, test_cfg_val, sig, mask, val;
2287 int err;
2288 u64 reset_val;
2289
2290 switch (np->port) {
2291 case 0:
2292 reset_val = ENET_SERDES_RESET_0;
2293 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2294 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2295 pll_cfg = ENET_SERDES_0_PLL_CFG;
2296 break;
2297 case 1:
2298 reset_val = ENET_SERDES_RESET_1;
2299 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2300 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2301 pll_cfg = ENET_SERDES_1_PLL_CFG;
2302 break;
2303
2304 default:
2305 return -EINVAL;
2306 }
2307 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2308 ENET_SERDES_CTRL_SDET_1 |
2309 ENET_SERDES_CTRL_SDET_2 |
2310 ENET_SERDES_CTRL_SDET_3 |
2311 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2312 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2313 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2314 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2315 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2316 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2317 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2318 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2319 test_cfg_val = 0;
2320
2321 if (lp->loopback_mode == LOOPBACK_PHY) {
2322 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2323 ENET_SERDES_TEST_MD_0_SHIFT) |
2324 (ENET_TEST_MD_PAD_LOOPBACK <<
2325 ENET_SERDES_TEST_MD_1_SHIFT) |
2326 (ENET_TEST_MD_PAD_LOOPBACK <<
2327 ENET_SERDES_TEST_MD_2_SHIFT) |
2328 (ENET_TEST_MD_PAD_LOOPBACK <<
2329 ENET_SERDES_TEST_MD_3_SHIFT));
2330 }
2331
2332 esr_reset(np);
2333 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2334 nw64(ctrl_reg, ctrl_val);
2335 nw64(test_cfg_reg, test_cfg_val);
2336
2337 /* Initialize all 4 lanes of the SERDES. */
2338 for (i = 0; i < 4; i++) {
2339 u32 rxtx_ctrl, glue0;
2340
2341 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2342 if (err)
2343 return err;
2344 err = esr_read_glue0(np, i, &glue0);
2345 if (err)
2346 return err;
2347
2348 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2349 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2350 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2351
2352 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2353 ESR_GLUE_CTRL0_THCNT |
2354 ESR_GLUE_CTRL0_BLTIME);
2355 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2356 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2357 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2358 (BLTIME_300_CYCLES <<
2359 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2360
2361 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2362 if (err)
2363 return err;
2364 err = esr_write_glue0(np, i, glue0);
2365 if (err)
2366 return err;
2367 }
2368
2369
2370 sig = nr64(ESR_INT_SIGNALS);
2371 switch (np->port) {
2372 case 0:
2373 mask = ESR_INT_SIGNALS_P0_BITS;
2374 val = (ESR_INT_SRDY0_P0 |
2375 ESR_INT_DET0_P0 |
2376 ESR_INT_XSRDY_P0 |
2377 ESR_INT_XDP_P0_CH3 |
2378 ESR_INT_XDP_P0_CH2 |
2379 ESR_INT_XDP_P0_CH1 |
2380 ESR_INT_XDP_P0_CH0);
2381 break;
2382
2383 case 1:
2384 mask = ESR_INT_SIGNALS_P1_BITS;
2385 val = (ESR_INT_SRDY0_P1 |
2386 ESR_INT_DET0_P1 |
2387 ESR_INT_XSRDY_P1 |
2388 ESR_INT_XDP_P1_CH3 |
2389 ESR_INT_XDP_P1_CH2 |
2390 ESR_INT_XDP_P1_CH1 |
2391 ESR_INT_XDP_P1_CH0);
2392 break;
2393
2394 default:
2395 return -EINVAL;
2396 }
2397
2398 if ((sig & mask) != val) {
2399 int err;
2400 err = serdes_init_1g_serdes(np);
2401 if (!err) {
2402 np->flags &= ~NIU_FLAGS_10G;
2403 np->mac_xcvr = MAC_XCVR_PCS;
2404 } else {
2405 dev_err(np->device, PFX "Port %u 10G/1G SERDES Link Failed \n",
2406 np->port);
2407 return -ENODEV;
2408 }
2409 }
2410
2411 return 0;
2412 }
2413
2414 static int niu_determine_phy_disposition(struct niu *np)
2415 {
2416 struct niu_parent *parent = np->parent;
2417 u8 plat_type = parent->plat_type;
2418 const struct niu_phy_template *tp;
2419 u32 phy_addr_off = 0;
2420
2421 if (plat_type == PLAT_TYPE_NIU) {
2422 switch (np->flags &
2423 (NIU_FLAGS_10G |
2424 NIU_FLAGS_FIBER |
2425 NIU_FLAGS_XCVR_SERDES)) {
2426 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2427 /* 10G Serdes */
2428 tp = &phy_template_niu_10g_serdes;
2429 break;
2430 case NIU_FLAGS_XCVR_SERDES:
2431 /* 1G Serdes */
2432 tp = &phy_template_niu_1g_serdes;
2433 break;
2434 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2435 /* 10G Fiber */
2436 default:
2437 tp = &phy_template_niu_10g_fiber;
2438 phy_addr_off += np->port;
2439 break;
2440 }
2441 } else {
2442 switch (np->flags &
2443 (NIU_FLAGS_10G |
2444 NIU_FLAGS_FIBER |
2445 NIU_FLAGS_XCVR_SERDES)) {
2446 case 0:
2447 /* 1G copper */
2448 tp = &phy_template_1g_copper;
2449 if (plat_type == PLAT_TYPE_VF_P0)
2450 phy_addr_off = 10;
2451 else if (plat_type == PLAT_TYPE_VF_P1)
2452 phy_addr_off = 26;
2453
2454 phy_addr_off += (np->port ^ 0x3);
2455 break;
2456
2457 case NIU_FLAGS_10G:
2458 /* 10G copper */
2459 tp = &phy_template_1g_copper;
2460 break;
2461
2462 case NIU_FLAGS_FIBER:
2463 /* 1G fiber */
2464 tp = &phy_template_1g_fiber;
2465 break;
2466
2467 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2468 /* 10G fiber */
2469 tp = &phy_template_10g_fiber;
2470 if (plat_type == PLAT_TYPE_VF_P0 ||
2471 plat_type == PLAT_TYPE_VF_P1)
2472 phy_addr_off = 8;
2473 phy_addr_off += np->port;
2474 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2475 tp = &phy_template_10g_fiber_hotplug;
2476 if (np->port == 0)
2477 phy_addr_off = 8;
2478 if (np->port == 1)
2479 phy_addr_off = 12;
2480 }
2481 break;
2482
2483 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2484 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2485 case NIU_FLAGS_XCVR_SERDES:
2486 switch(np->port) {
2487 case 0:
2488 case 1:
2489 tp = &phy_template_10g_serdes;
2490 break;
2491 case 2:
2492 case 3:
2493 tp = &phy_template_1g_rgmii;
2494 break;
2495 default:
2496 return -EINVAL;
2497 break;
2498 }
2499 phy_addr_off = niu_atca_port_num[np->port];
2500 break;
2501
2502 default:
2503 return -EINVAL;
2504 }
2505 }
2506
2507 np->phy_ops = tp->ops;
2508 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2509
2510 return 0;
2511 }
2512
2513 static int niu_init_link(struct niu *np)
2514 {
2515 struct niu_parent *parent = np->parent;
2516 int err, ignore;
2517
2518 if (parent->plat_type == PLAT_TYPE_NIU) {
2519 err = niu_xcvr_init(np);
2520 if (err)
2521 return err;
2522 msleep(200);
2523 }
2524 err = niu_serdes_init(np);
2525 if (err)
2526 return err;
2527 msleep(200);
2528 err = niu_xcvr_init(np);
2529 if (!err)
2530 niu_link_status(np, &ignore);
2531 return 0;
2532 }
2533
2534 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2535 {
2536 u16 reg0 = addr[4] << 8 | addr[5];
2537 u16 reg1 = addr[2] << 8 | addr[3];
2538 u16 reg2 = addr[0] << 8 | addr[1];
2539
2540 if (np->flags & NIU_FLAGS_XMAC) {
2541 nw64_mac(XMAC_ADDR0, reg0);
2542 nw64_mac(XMAC_ADDR1, reg1);
2543 nw64_mac(XMAC_ADDR2, reg2);
2544 } else {
2545 nw64_mac(BMAC_ADDR0, reg0);
2546 nw64_mac(BMAC_ADDR1, reg1);
2547 nw64_mac(BMAC_ADDR2, reg2);
2548 }
2549 }
2550
2551 static int niu_num_alt_addr(struct niu *np)
2552 {
2553 if (np->flags & NIU_FLAGS_XMAC)
2554 return XMAC_NUM_ALT_ADDR;
2555 else
2556 return BMAC_NUM_ALT_ADDR;
2557 }
2558
2559 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2560 {
2561 u16 reg0 = addr[4] << 8 | addr[5];
2562 u16 reg1 = addr[2] << 8 | addr[3];
2563 u16 reg2 = addr[0] << 8 | addr[1];
2564
2565 if (index >= niu_num_alt_addr(np))
2566 return -EINVAL;
2567
2568 if (np->flags & NIU_FLAGS_XMAC) {
2569 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2570 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2571 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2572 } else {
2573 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2574 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2575 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2576 }
2577
2578 return 0;
2579 }
2580
2581 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2582 {
2583 unsigned long reg;
2584 u64 val, mask;
2585
2586 if (index >= niu_num_alt_addr(np))
2587 return -EINVAL;
2588
2589 if (np->flags & NIU_FLAGS_XMAC) {
2590 reg = XMAC_ADDR_CMPEN;
2591 mask = 1 << index;
2592 } else {
2593 reg = BMAC_ADDR_CMPEN;
2594 mask = 1 << (index + 1);
2595 }
2596
2597 val = nr64_mac(reg);
2598 if (on)
2599 val |= mask;
2600 else
2601 val &= ~mask;
2602 nw64_mac(reg, val);
2603
2604 return 0;
2605 }
2606
2607 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2608 int num, int mac_pref)
2609 {
2610 u64 val = nr64_mac(reg);
2611 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2612 val |= num;
2613 if (mac_pref)
2614 val |= HOST_INFO_MPR;
2615 nw64_mac(reg, val);
2616 }
2617
2618 static int __set_rdc_table_num(struct niu *np,
2619 int xmac_index, int bmac_index,
2620 int rdc_table_num, int mac_pref)
2621 {
2622 unsigned long reg;
2623
2624 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2625 return -EINVAL;
2626 if (np->flags & NIU_FLAGS_XMAC)
2627 reg = XMAC_HOST_INFO(xmac_index);
2628 else
2629 reg = BMAC_HOST_INFO(bmac_index);
2630 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2631 return 0;
2632 }
2633
2634 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2635 int mac_pref)
2636 {
2637 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2638 }
2639
2640 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2641 int mac_pref)
2642 {
2643 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2644 }
2645
2646 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2647 int table_num, int mac_pref)
2648 {
2649 if (idx >= niu_num_alt_addr(np))
2650 return -EINVAL;
2651 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2652 }
2653
2654 static u64 vlan_entry_set_parity(u64 reg_val)
2655 {
2656 u64 port01_mask;
2657 u64 port23_mask;
2658
2659 port01_mask = 0x00ff;
2660 port23_mask = 0xff00;
2661
2662 if (hweight64(reg_val & port01_mask) & 1)
2663 reg_val |= ENET_VLAN_TBL_PARITY0;
2664 else
2665 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2666
2667 if (hweight64(reg_val & port23_mask) & 1)
2668 reg_val |= ENET_VLAN_TBL_PARITY1;
2669 else
2670 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2671
2672 return reg_val;
2673 }
2674
2675 static void vlan_tbl_write(struct niu *np, unsigned long index,
2676 int port, int vpr, int rdc_table)
2677 {
2678 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2679
2680 reg_val &= ~((ENET_VLAN_TBL_VPR |
2681 ENET_VLAN_TBL_VLANRDCTBLN) <<
2682 ENET_VLAN_TBL_SHIFT(port));
2683 if (vpr)
2684 reg_val |= (ENET_VLAN_TBL_VPR <<
2685 ENET_VLAN_TBL_SHIFT(port));
2686 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2687
2688 reg_val = vlan_entry_set_parity(reg_val);
2689
2690 nw64(ENET_VLAN_TBL(index), reg_val);
2691 }
2692
2693 static void vlan_tbl_clear(struct niu *np)
2694 {
2695 int i;
2696
2697 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2698 nw64(ENET_VLAN_TBL(i), 0);
2699 }
2700
2701 static int tcam_wait_bit(struct niu *np, u64 bit)
2702 {
2703 int limit = 1000;
2704
2705 while (--limit > 0) {
2706 if (nr64(TCAM_CTL) & bit)
2707 break;
2708 udelay(1);
2709 }
2710 if (limit < 0)
2711 return -ENODEV;
2712
2713 return 0;
2714 }
2715
2716 static int tcam_flush(struct niu *np, int index)
2717 {
2718 nw64(TCAM_KEY_0, 0x00);
2719 nw64(TCAM_KEY_MASK_0, 0xff);
2720 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2721
2722 return tcam_wait_bit(np, TCAM_CTL_STAT);
2723 }
2724
2725 #if 0
2726 static int tcam_read(struct niu *np, int index,
2727 u64 *key, u64 *mask)
2728 {
2729 int err;
2730
2731 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2732 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2733 if (!err) {
2734 key[0] = nr64(TCAM_KEY_0);
2735 key[1] = nr64(TCAM_KEY_1);
2736 key[2] = nr64(TCAM_KEY_2);
2737 key[3] = nr64(TCAM_KEY_3);
2738 mask[0] = nr64(TCAM_KEY_MASK_0);
2739 mask[1] = nr64(TCAM_KEY_MASK_1);
2740 mask[2] = nr64(TCAM_KEY_MASK_2);
2741 mask[3] = nr64(TCAM_KEY_MASK_3);
2742 }
2743 return err;
2744 }
2745 #endif
2746
2747 static int tcam_write(struct niu *np, int index,
2748 u64 *key, u64 *mask)
2749 {
2750 nw64(TCAM_KEY_0, key[0]);
2751 nw64(TCAM_KEY_1, key[1]);
2752 nw64(TCAM_KEY_2, key[2]);
2753 nw64(TCAM_KEY_3, key[3]);
2754 nw64(TCAM_KEY_MASK_0, mask[0]);
2755 nw64(TCAM_KEY_MASK_1, mask[1]);
2756 nw64(TCAM_KEY_MASK_2, mask[2]);
2757 nw64(TCAM_KEY_MASK_3, mask[3]);
2758 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2759
2760 return tcam_wait_bit(np, TCAM_CTL_STAT);
2761 }
2762
2763 #if 0
2764 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2765 {
2766 int err;
2767
2768 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2769 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2770 if (!err)
2771 *data = nr64(TCAM_KEY_1);
2772
2773 return err;
2774 }
2775 #endif
2776
2777 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2778 {
2779 nw64(TCAM_KEY_1, assoc_data);
2780 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2781
2782 return tcam_wait_bit(np, TCAM_CTL_STAT);
2783 }
2784
2785 static void tcam_enable(struct niu *np, int on)
2786 {
2787 u64 val = nr64(FFLP_CFG_1);
2788
2789 if (on)
2790 val &= ~FFLP_CFG_1_TCAM_DIS;
2791 else
2792 val |= FFLP_CFG_1_TCAM_DIS;
2793 nw64(FFLP_CFG_1, val);
2794 }
2795
2796 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2797 {
2798 u64 val = nr64(FFLP_CFG_1);
2799
2800 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2801 FFLP_CFG_1_CAMLAT |
2802 FFLP_CFG_1_CAMRATIO);
2803 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2804 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2805 nw64(FFLP_CFG_1, val);
2806
2807 val = nr64(FFLP_CFG_1);
2808 val |= FFLP_CFG_1_FFLPINITDONE;
2809 nw64(FFLP_CFG_1, val);
2810 }
2811
2812 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2813 int on)
2814 {
2815 unsigned long reg;
2816 u64 val;
2817
2818 if (class < CLASS_CODE_ETHERTYPE1 ||
2819 class > CLASS_CODE_ETHERTYPE2)
2820 return -EINVAL;
2821
2822 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2823 val = nr64(reg);
2824 if (on)
2825 val |= L2_CLS_VLD;
2826 else
2827 val &= ~L2_CLS_VLD;
2828 nw64(reg, val);
2829
2830 return 0;
2831 }
2832
2833 #if 0
2834 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2835 u64 ether_type)
2836 {
2837 unsigned long reg;
2838 u64 val;
2839
2840 if (class < CLASS_CODE_ETHERTYPE1 ||
2841 class > CLASS_CODE_ETHERTYPE2 ||
2842 (ether_type & ~(u64)0xffff) != 0)
2843 return -EINVAL;
2844
2845 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2846 val = nr64(reg);
2847 val &= ~L2_CLS_ETYPE;
2848 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2849 nw64(reg, val);
2850
2851 return 0;
2852 }
2853 #endif
2854
2855 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2856 int on)
2857 {
2858 unsigned long reg;
2859 u64 val;
2860
2861 if (class < CLASS_CODE_USER_PROG1 ||
2862 class > CLASS_CODE_USER_PROG4)
2863 return -EINVAL;
2864
2865 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2866 val = nr64(reg);
2867 if (on)
2868 val |= L3_CLS_VALID;
2869 else
2870 val &= ~L3_CLS_VALID;
2871 nw64(reg, val);
2872
2873 return 0;
2874 }
2875
2876 #if 0
2877 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2878 int ipv6, u64 protocol_id,
2879 u64 tos_mask, u64 tos_val)
2880 {
2881 unsigned long reg;
2882 u64 val;
2883
2884 if (class < CLASS_CODE_USER_PROG1 ||
2885 class > CLASS_CODE_USER_PROG4 ||
2886 (protocol_id & ~(u64)0xff) != 0 ||
2887 (tos_mask & ~(u64)0xff) != 0 ||
2888 (tos_val & ~(u64)0xff) != 0)
2889 return -EINVAL;
2890
2891 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2892 val = nr64(reg);
2893 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2894 L3_CLS_TOSMASK | L3_CLS_TOS);
2895 if (ipv6)
2896 val |= L3_CLS_IPVER;
2897 val |= (protocol_id << L3_CLS_PID_SHIFT);
2898 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2899 val |= (tos_val << L3_CLS_TOS_SHIFT);
2900 nw64(reg, val);
2901
2902 return 0;
2903 }
2904 #endif
2905
2906 static int tcam_early_init(struct niu *np)
2907 {
2908 unsigned long i;
2909 int err;
2910
2911 tcam_enable(np, 0);
2912 tcam_set_lat_and_ratio(np,
2913 DEFAULT_TCAM_LATENCY,
2914 DEFAULT_TCAM_ACCESS_RATIO);
2915 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
2916 err = tcam_user_eth_class_enable(np, i, 0);
2917 if (err)
2918 return err;
2919 }
2920 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
2921 err = tcam_user_ip_class_enable(np, i, 0);
2922 if (err)
2923 return err;
2924 }
2925
2926 return 0;
2927 }
2928
2929 static int tcam_flush_all(struct niu *np)
2930 {
2931 unsigned long i;
2932
2933 for (i = 0; i < np->parent->tcam_num_entries; i++) {
2934 int err = tcam_flush(np, i);
2935 if (err)
2936 return err;
2937 }
2938 return 0;
2939 }
2940
2941 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
2942 {
2943 return ((u64)index | (num_entries == 1 ?
2944 HASH_TBL_ADDR_AUTOINC : 0));
2945 }
2946
2947 #if 0
2948 static int hash_read(struct niu *np, unsigned long partition,
2949 unsigned long index, unsigned long num_entries,
2950 u64 *data)
2951 {
2952 u64 val = hash_addr_regval(index, num_entries);
2953 unsigned long i;
2954
2955 if (partition >= FCRAM_NUM_PARTITIONS ||
2956 index + num_entries > FCRAM_SIZE)
2957 return -EINVAL;
2958
2959 nw64(HASH_TBL_ADDR(partition), val);
2960 for (i = 0; i < num_entries; i++)
2961 data[i] = nr64(HASH_TBL_DATA(partition));
2962
2963 return 0;
2964 }
2965 #endif
2966
2967 static int hash_write(struct niu *np, unsigned long partition,
2968 unsigned long index, unsigned long num_entries,
2969 u64 *data)
2970 {
2971 u64 val = hash_addr_regval(index, num_entries);
2972 unsigned long i;
2973
2974 if (partition >= FCRAM_NUM_PARTITIONS ||
2975 index + (num_entries * 8) > FCRAM_SIZE)
2976 return -EINVAL;
2977
2978 nw64(HASH_TBL_ADDR(partition), val);
2979 for (i = 0; i < num_entries; i++)
2980 nw64(HASH_TBL_DATA(partition), data[i]);
2981
2982 return 0;
2983 }
2984
2985 static void fflp_reset(struct niu *np)
2986 {
2987 u64 val;
2988
2989 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
2990 udelay(10);
2991 nw64(FFLP_CFG_1, 0);
2992
2993 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
2994 nw64(FFLP_CFG_1, val);
2995 }
2996
2997 static void fflp_set_timings(struct niu *np)
2998 {
2999 u64 val = nr64(FFLP_CFG_1);
3000
3001 val &= ~FFLP_CFG_1_FFLPINITDONE;
3002 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3003 nw64(FFLP_CFG_1, val);
3004
3005 val = nr64(FFLP_CFG_1);
3006 val |= FFLP_CFG_1_FFLPINITDONE;
3007 nw64(FFLP_CFG_1, val);
3008
3009 val = nr64(FCRAM_REF_TMR);
3010 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3011 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3012 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3013 nw64(FCRAM_REF_TMR, val);
3014 }
3015
3016 static int fflp_set_partition(struct niu *np, u64 partition,
3017 u64 mask, u64 base, int enable)
3018 {
3019 unsigned long reg;
3020 u64 val;
3021
3022 if (partition >= FCRAM_NUM_PARTITIONS ||
3023 (mask & ~(u64)0x1f) != 0 ||
3024 (base & ~(u64)0x1f) != 0)
3025 return -EINVAL;
3026
3027 reg = FLW_PRT_SEL(partition);
3028
3029 val = nr64(reg);
3030 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3031 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3032 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3033 if (enable)
3034 val |= FLW_PRT_SEL_EXT;
3035 nw64(reg, val);
3036
3037 return 0;
3038 }
3039
3040 static int fflp_disable_all_partitions(struct niu *np)
3041 {
3042 unsigned long i;
3043
3044 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3045 int err = fflp_set_partition(np, 0, 0, 0, 0);
3046 if (err)
3047 return err;
3048 }
3049 return 0;
3050 }
3051
3052 static void fflp_llcsnap_enable(struct niu *np, int on)
3053 {
3054 u64 val = nr64(FFLP_CFG_1);
3055
3056 if (on)
3057 val |= FFLP_CFG_1_LLCSNAP;
3058 else
3059 val &= ~FFLP_CFG_1_LLCSNAP;
3060 nw64(FFLP_CFG_1, val);
3061 }
3062
3063 static void fflp_errors_enable(struct niu *np, int on)
3064 {
3065 u64 val = nr64(FFLP_CFG_1);
3066
3067 if (on)
3068 val &= ~FFLP_CFG_1_ERRORDIS;
3069 else
3070 val |= FFLP_CFG_1_ERRORDIS;
3071 nw64(FFLP_CFG_1, val);
3072 }
3073
3074 static int fflp_hash_clear(struct niu *np)
3075 {
3076 struct fcram_hash_ipv4 ent;
3077 unsigned long i;
3078
3079 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3080 memset(&ent, 0, sizeof(ent));
3081 ent.header = HASH_HEADER_EXT;
3082
3083 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3084 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3085 if (err)
3086 return err;
3087 }
3088 return 0;
3089 }
3090
3091 static int fflp_early_init(struct niu *np)
3092 {
3093 struct niu_parent *parent;
3094 unsigned long flags;
3095 int err;
3096
3097 niu_lock_parent(np, flags);
3098
3099 parent = np->parent;
3100 err = 0;
3101 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3102 niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
3103 np->port);
3104 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3105 fflp_reset(np);
3106 fflp_set_timings(np);
3107 err = fflp_disable_all_partitions(np);
3108 if (err) {
3109 niudbg(PROBE, "fflp_disable_all_partitions "
3110 "failed, err=%d\n", err);
3111 goto out;
3112 }
3113 }
3114
3115 err = tcam_early_init(np);
3116 if (err) {
3117 niudbg(PROBE, "tcam_early_init failed, err=%d\n",
3118 err);
3119 goto out;
3120 }
3121 fflp_llcsnap_enable(np, 1);
3122 fflp_errors_enable(np, 0);
3123 nw64(H1POLY, 0);
3124 nw64(H2POLY, 0);
3125
3126 err = tcam_flush_all(np);
3127 if (err) {
3128 niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
3129 err);
3130 goto out;
3131 }
3132 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3133 err = fflp_hash_clear(np);
3134 if (err) {
3135 niudbg(PROBE, "fflp_hash_clear failed, "
3136 "err=%d\n", err);
3137 goto out;
3138 }
3139 }
3140
3141 vlan_tbl_clear(np);
3142
3143 niudbg(PROBE, "fflp_early_init: Success\n");
3144 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3145 }
3146 out:
3147 niu_unlock_parent(np, flags);
3148 return err;
3149 }
3150
3151 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3152 {
3153 if (class_code < CLASS_CODE_USER_PROG1 ||
3154 class_code > CLASS_CODE_SCTP_IPV6)
3155 return -EINVAL;
3156
3157 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3158 return 0;
3159 }
3160
3161 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3162 {
3163 if (class_code < CLASS_CODE_USER_PROG1 ||
3164 class_code > CLASS_CODE_SCTP_IPV6)
3165 return -EINVAL;
3166
3167 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3168 return 0;
3169 }
3170
3171 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3172 u32 offset, u32 size)
3173 {
3174 int i = skb_shinfo(skb)->nr_frags;
3175 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3176
3177 frag->page = page;
3178 frag->page_offset = offset;
3179 frag->size = size;
3180
3181 skb->len += size;
3182 skb->data_len += size;
3183 skb->truesize += size;
3184
3185 skb_shinfo(skb)->nr_frags = i + 1;
3186 }
3187
3188 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3189 {
3190 a >>= PAGE_SHIFT;
3191 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3192
3193 return (a & (MAX_RBR_RING_SIZE - 1));
3194 }
3195
3196 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3197 struct page ***link)
3198 {
3199 unsigned int h = niu_hash_rxaddr(rp, addr);
3200 struct page *p, **pp;
3201
3202 addr &= PAGE_MASK;
3203 pp = &rp->rxhash[h];
3204 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3205 if (p->index == addr) {
3206 *link = pp;
3207 break;
3208 }
3209 }
3210
3211 return p;
3212 }
3213
3214 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3215 {
3216 unsigned int h = niu_hash_rxaddr(rp, base);
3217
3218 page->index = base;
3219 page->mapping = (struct address_space *) rp->rxhash[h];
3220 rp->rxhash[h] = page;
3221 }
3222
3223 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3224 gfp_t mask, int start_index)
3225 {
3226 struct page *page;
3227 u64 addr;
3228 int i;
3229
3230 page = alloc_page(mask);
3231 if (!page)
3232 return -ENOMEM;
3233
3234 addr = np->ops->map_page(np->device, page, 0,
3235 PAGE_SIZE, DMA_FROM_DEVICE);
3236
3237 niu_hash_page(rp, page, addr);
3238 if (rp->rbr_blocks_per_page > 1)
3239 atomic_add(rp->rbr_blocks_per_page - 1,
3240 &compound_head(page)->_count);
3241
3242 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3243 __le32 *rbr = &rp->rbr[start_index + i];
3244
3245 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3246 addr += rp->rbr_block_size;
3247 }
3248
3249 return 0;
3250 }
3251
3252 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3253 {
3254 int index = rp->rbr_index;
3255
3256 rp->rbr_pending++;
3257 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3258 int err = niu_rbr_add_page(np, rp, mask, index);
3259
3260 if (unlikely(err)) {
3261 rp->rbr_pending--;
3262 return;
3263 }
3264
3265 rp->rbr_index += rp->rbr_blocks_per_page;
3266 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3267 if (rp->rbr_index == rp->rbr_table_size)
3268 rp->rbr_index = 0;
3269
3270 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3271 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3272 rp->rbr_pending = 0;
3273 }
3274 }
3275 }
3276
3277 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3278 {
3279 unsigned int index = rp->rcr_index;
3280 int num_rcr = 0;
3281
3282 rp->rx_dropped++;
3283 while (1) {
3284 struct page *page, **link;
3285 u64 addr, val;
3286 u32 rcr_size;
3287
3288 num_rcr++;
3289
3290 val = le64_to_cpup(&rp->rcr[index]);
3291 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3292 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3293 page = niu_find_rxpage(rp, addr, &link);
3294
3295 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3296 RCR_ENTRY_PKTBUFSZ_SHIFT];
3297 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3298 *link = (struct page *) page->mapping;
3299 np->ops->unmap_page(np->device, page->index,
3300 PAGE_SIZE, DMA_FROM_DEVICE);
3301 page->index = 0;
3302 page->mapping = NULL;
3303 __free_page(page);
3304 rp->rbr_refill_pending++;
3305 }
3306
3307 index = NEXT_RCR(rp, index);
3308 if (!(val & RCR_ENTRY_MULTI))
3309 break;
3310
3311 }
3312 rp->rcr_index = index;
3313
3314 return num_rcr;
3315 }
3316
3317 static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
3318 {
3319 unsigned int index = rp->rcr_index;
3320 struct sk_buff *skb;
3321 int len, num_rcr;
3322
3323 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3324 if (unlikely(!skb))
3325 return niu_rx_pkt_ignore(np, rp);
3326
3327 num_rcr = 0;
3328 while (1) {
3329 struct page *page, **link;
3330 u32 rcr_size, append_size;
3331 u64 addr, val, off;
3332
3333 num_rcr++;
3334
3335 val = le64_to_cpup(&rp->rcr[index]);
3336
3337 len = (val & RCR_ENTRY_L2_LEN) >>
3338 RCR_ENTRY_L2_LEN_SHIFT;
3339 len -= ETH_FCS_LEN;
3340
3341 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3342 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3343 page = niu_find_rxpage(rp, addr, &link);
3344
3345 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3346 RCR_ENTRY_PKTBUFSZ_SHIFT];
3347
3348 off = addr & ~PAGE_MASK;
3349 append_size = rcr_size;
3350 if (num_rcr == 1) {
3351 int ptype;
3352
3353 off += 2;
3354 append_size -= 2;
3355
3356 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3357 if ((ptype == RCR_PKT_TYPE_TCP ||
3358 ptype == RCR_PKT_TYPE_UDP) &&
3359 !(val & (RCR_ENTRY_NOPORT |
3360 RCR_ENTRY_ERROR)))
3361 skb->ip_summed = CHECKSUM_UNNECESSARY;
3362 else
3363 skb->ip_summed = CHECKSUM_NONE;
3364 }
3365 if (!(val & RCR_ENTRY_MULTI))
3366 append_size = len - skb->len;
3367
3368 niu_rx_skb_append(skb, page, off, append_size);
3369 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3370 *link = (struct page *) page->mapping;
3371 np->ops->unmap_page(np->device, page->index,
3372 PAGE_SIZE, DMA_FROM_DEVICE);
3373 page->index = 0;
3374 page->mapping = NULL;
3375 rp->rbr_refill_pending++;
3376 } else
3377 get_page(page);
3378
3379 index = NEXT_RCR(rp, index);
3380 if (!(val & RCR_ENTRY_MULTI))
3381 break;
3382
3383 }
3384 rp->rcr_index = index;
3385
3386 skb_reserve(skb, NET_IP_ALIGN);
3387 __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
3388
3389 rp->rx_packets++;
3390 rp->rx_bytes += skb->len;
3391
3392 skb->protocol = eth_type_trans(skb, np->dev);
3393 netif_receive_skb(skb);
3394
3395 return num_rcr;
3396 }
3397
3398 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3399 {
3400 int blocks_per_page = rp->rbr_blocks_per_page;
3401 int err, index = rp->rbr_index;
3402
3403 err = 0;
3404 while (index < (rp->rbr_table_size - blocks_per_page)) {
3405 err = niu_rbr_add_page(np, rp, mask, index);
3406 if (err)
3407 break;
3408
3409 index += blocks_per_page;
3410 }
3411
3412 rp->rbr_index = index;
3413 return err;
3414 }
3415
3416 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3417 {
3418 int i;
3419
3420 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3421 struct page *page;
3422
3423 page = rp->rxhash[i];
3424 while (page) {
3425 struct page *next = (struct page *) page->mapping;
3426 u64 base = page->index;
3427
3428 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3429 DMA_FROM_DEVICE);
3430 page->index = 0;
3431 page->mapping = NULL;
3432
3433 __free_page(page);
3434
3435 page = next;
3436 }
3437 }
3438
3439 for (i = 0; i < rp->rbr_table_size; i++)
3440 rp->rbr[i] = cpu_to_le32(0);
3441 rp->rbr_index = 0;
3442 }
3443
3444 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3445 {
3446 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3447 struct sk_buff *skb = tb->skb;
3448 struct tx_pkt_hdr *tp;
3449 u64 tx_flags;
3450 int i, len;
3451
3452 tp = (struct tx_pkt_hdr *) skb->data;
3453 tx_flags = le64_to_cpup(&tp->flags);
3454
3455 rp->tx_packets++;
3456 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3457 ((tx_flags & TXHDR_PAD) / 2));
3458
3459 len = skb_headlen(skb);
3460 np->ops->unmap_single(np->device, tb->mapping,
3461 len, DMA_TO_DEVICE);
3462
3463 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3464 rp->mark_pending--;
3465
3466 tb->skb = NULL;
3467 do {
3468 idx = NEXT_TX(rp, idx);
3469 len -= MAX_TX_DESC_LEN;
3470 } while (len > 0);
3471
3472 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3473 tb = &rp->tx_buffs[idx];
3474 BUG_ON(tb->skb != NULL);
3475 np->ops->unmap_page(np->device, tb->mapping,
3476 skb_shinfo(skb)->frags[i].size,
3477 DMA_TO_DEVICE);
3478 idx = NEXT_TX(rp, idx);
3479 }
3480
3481 dev_kfree_skb(skb);
3482
3483 return idx;
3484 }
3485
3486 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3487
3488 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3489 {
3490 struct netdev_queue *txq;
3491 u16 pkt_cnt, tmp;
3492 int cons, index;
3493 u64 cs;
3494
3495 index = (rp - np->tx_rings);
3496 txq = netdev_get_tx_queue(np->dev, index);
3497
3498 cs = rp->tx_cs;
3499 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3500 goto out;
3501
3502 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3503 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3504 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3505
3506 rp->last_pkt_cnt = tmp;
3507
3508 cons = rp->cons;
3509
3510 niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
3511 np->dev->name, pkt_cnt, cons);
3512
3513 while (pkt_cnt--)
3514 cons = release_tx_packet(np, rp, cons);
3515
3516 rp->cons = cons;
3517 smp_mb();
3518
3519 out:
3520 if (unlikely(netif_tx_queue_stopped(txq) &&
3521 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3522 __netif_tx_lock(txq, smp_processor_id());
3523 if (netif_tx_queue_stopped(txq) &&
3524 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3525 netif_tx_wake_queue(txq);
3526 __netif_tx_unlock(txq);
3527 }
3528 }
3529
3530 static inline void niu_sync_rx_discard_stats(struct niu *np,
3531 struct rx_ring_info *rp,
3532 const int limit)
3533 {
3534 /* This elaborate scheme is needed for reading the RX discard
3535 * counters, as they are only 16-bit and can overflow quickly,
3536 * and because the overflow indication bit is not usable as
3537 * the counter value does not wrap, but remains at max value
3538 * 0xFFFF.
3539 *
3540 * In theory and in practice counters can be lost in between
3541 * reading nr64() and clearing the counter nw64(). For this
3542 * reason, the number of counter clearings nw64() is
3543 * limited/reduced though the limit parameter.
3544 */
3545 int rx_channel = rp->rx_channel;
3546 u32 misc, wred;
3547
3548 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3549 * following discard events: IPP (Input Port Process),
3550 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3551 * Block Ring) prefetch buffer is empty.
3552 */
3553 misc = nr64(RXMISC(rx_channel));
3554 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3555 nw64(RXMISC(rx_channel), 0);
3556 rp->rx_errors += misc & RXMISC_COUNT;
3557
3558 if (unlikely(misc & RXMISC_OFLOW))
3559 dev_err(np->device, "rx-%d: Counter overflow "
3560 "RXMISC discard\n", rx_channel);
3561
3562 niudbg(RX_ERR, "%s-rx-%d: MISC drop=%u over=%u\n",
3563 np->dev->name, rx_channel, misc, misc-limit);
3564 }
3565
3566 /* WRED (Weighted Random Early Discard) by hardware */
3567 wred = nr64(RED_DIS_CNT(rx_channel));
3568 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3569 nw64(RED_DIS_CNT(rx_channel), 0);
3570 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3571
3572 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3573 dev_err(np->device, "rx-%d: Counter overflow "
3574 "WRED discard\n", rx_channel);
3575
3576 niudbg(RX_ERR, "%s-rx-%d: WRED drop=%u over=%u\n",
3577 np->dev->name, rx_channel, wred, wred-limit);
3578 }
3579 }
3580
3581 static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
3582 {
3583 int qlen, rcr_done = 0, work_done = 0;
3584 struct rxdma_mailbox *mbox = rp->mbox;
3585 u64 stat;
3586
3587 #if 1
3588 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3589 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3590 #else
3591 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3592 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3593 #endif
3594 mbox->rx_dma_ctl_stat = 0;
3595 mbox->rcrstat_a = 0;
3596
3597 niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
3598 np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
3599
3600 rcr_done = work_done = 0;
3601 qlen = min(qlen, budget);
3602 while (work_done < qlen) {
3603 rcr_done += niu_process_rx_pkt(np, rp);
3604 work_done++;
3605 }
3606
3607 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3608 unsigned int i;
3609
3610 for (i = 0; i < rp->rbr_refill_pending; i++)
3611 niu_rbr_refill(np, rp, GFP_ATOMIC);
3612 rp->rbr_refill_pending = 0;
3613 }
3614
3615 stat = (RX_DMA_CTL_STAT_MEX |
3616 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3617 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3618
3619 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3620
3621 /* Only sync discards stats when qlen indicate potential for drops */
3622 if (qlen > 10)
3623 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3624
3625 return work_done;
3626 }
3627
3628 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3629 {
3630 u64 v0 = lp->v0;
3631 u32 tx_vec = (v0 >> 32);
3632 u32 rx_vec = (v0 & 0xffffffff);
3633 int i, work_done = 0;
3634
3635 niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
3636 np->dev->name, (unsigned long long) v0);
3637
3638 for (i = 0; i < np->num_tx_rings; i++) {
3639 struct tx_ring_info *rp = &np->tx_rings[i];
3640 if (tx_vec & (1 << rp->tx_channel))
3641 niu_tx_work(np, rp);
3642 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3643 }
3644
3645 for (i = 0; i < np->num_rx_rings; i++) {
3646 struct rx_ring_info *rp = &np->rx_rings[i];
3647
3648 if (rx_vec & (1 << rp->rx_channel)) {
3649 int this_work_done;
3650
3651 this_work_done = niu_rx_work(np, rp,
3652 budget);
3653
3654 budget -= this_work_done;
3655 work_done += this_work_done;
3656 }
3657 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3658 }
3659
3660 return work_done;
3661 }
3662
3663 static int niu_poll(struct napi_struct *napi, int budget)
3664 {
3665 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3666 struct niu *np = lp->np;
3667 int work_done;
3668
3669 work_done = niu_poll_core(np, lp, budget);
3670
3671 if (work_done < budget) {
3672 netif_rx_complete(napi);
3673 niu_ldg_rearm(np, lp, 1);
3674 }
3675 return work_done;
3676 }
3677
3678 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3679 u64 stat)
3680 {
3681 dev_err(np->device, PFX "%s: RX channel %u errors ( ",
3682 np->dev->name, rp->rx_channel);
3683
3684 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3685 printk("RBR_TMOUT ");
3686 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3687 printk("RSP_CNT ");
3688 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3689 printk("BYTE_EN_BUS ");
3690 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3691 printk("RSP_DAT ");
3692 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3693 printk("RCR_ACK ");
3694 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3695 printk("RCR_SHA_PAR ");
3696 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3697 printk("RBR_PRE_PAR ");
3698 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3699 printk("CONFIG ");
3700 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3701 printk("RCRINCON ");
3702 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3703 printk("RCRFULL ");
3704 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3705 printk("RBRFULL ");
3706 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3707 printk("RBRLOGPAGE ");
3708 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3709 printk("CFIGLOGPAGE ");
3710 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3711 printk("DC_FIDO ");
3712
3713 printk(")\n");
3714 }
3715
3716 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3717 {
3718 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3719 int err = 0;
3720
3721
3722 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3723 RX_DMA_CTL_STAT_PORT_FATAL))
3724 err = -EINVAL;
3725
3726 if (err) {
3727 dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
3728 np->dev->name, rp->rx_channel,
3729 (unsigned long long) stat);
3730
3731 niu_log_rxchan_errors(np, rp, stat);
3732 }
3733
3734 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3735 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3736
3737 return err;
3738 }
3739
3740 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3741 u64 cs)
3742 {
3743 dev_err(np->device, PFX "%s: TX channel %u errors ( ",
3744 np->dev->name, rp->tx_channel);
3745
3746 if (cs & TX_CS_MBOX_ERR)
3747 printk("MBOX ");
3748 if (cs & TX_CS_PKT_SIZE_ERR)
3749 printk("PKT_SIZE ");
3750 if (cs & TX_CS_TX_RING_OFLOW)
3751 printk("TX_RING_OFLOW ");
3752 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3753 printk("PREF_BUF_PAR ");
3754 if (cs & TX_CS_NACK_PREF)
3755 printk("NACK_PREF ");
3756 if (cs & TX_CS_NACK_PKT_RD)
3757 printk("NACK_PKT_RD ");
3758 if (cs & TX_CS_CONF_PART_ERR)
3759 printk("CONF_PART ");
3760 if (cs & TX_CS_PKT_PRT_ERR)
3761 printk("PKT_PTR ");
3762
3763 printk(")\n");
3764 }
3765
3766 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3767 {
3768 u64 cs, logh, logl;
3769
3770 cs = nr64(TX_CS(rp->tx_channel));
3771 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3772 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3773
3774 dev_err(np->device, PFX "%s: TX channel %u error, "
3775 "cs[%llx] logh[%llx] logl[%llx]\n",
3776 np->dev->name, rp->tx_channel,
3777 (unsigned long long) cs,
3778 (unsigned long long) logh,
3779 (unsigned long long) logl);
3780
3781 niu_log_txchan_errors(np, rp, cs);
3782
3783 return -ENODEV;
3784 }
3785
3786 static int niu_mif_interrupt(struct niu *np)
3787 {
3788 u64 mif_status = nr64(MIF_STATUS);
3789 int phy_mdint = 0;
3790
3791 if (np->flags & NIU_FLAGS_XMAC) {
3792 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3793
3794 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3795 phy_mdint = 1;
3796 }
3797
3798 dev_err(np->device, PFX "%s: MIF interrupt, "
3799 "stat[%llx] phy_mdint(%d)\n",
3800 np->dev->name, (unsigned long long) mif_status, phy_mdint);
3801
3802 return -ENODEV;
3803 }
3804
3805 static void niu_xmac_interrupt(struct niu *np)
3806 {
3807 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3808 u64 val;
3809
3810 val = nr64_mac(XTXMAC_STATUS);
3811 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3812 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3813 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3814 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3815 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3816 mp->tx_fifo_errors++;
3817 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3818 mp->tx_overflow_errors++;
3819 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3820 mp->tx_max_pkt_size_errors++;
3821 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3822 mp->tx_underflow_errors++;
3823
3824 val = nr64_mac(XRXMAC_STATUS);
3825 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3826 mp->rx_local_faults++;
3827 if (val & XRXMAC_STATUS_RFLT_DET)
3828 mp->rx_remote_faults++;
3829 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3830 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3831 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3832 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3833 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3834 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3835 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3836 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3837 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3838 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3839 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3840 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3841 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3842 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3843 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3844 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3845 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3846 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3847 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3848 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3849 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3850 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3851 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3852 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3853 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3854 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3855 if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
3856 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3857 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3858 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3859 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3860 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3861 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3862 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3863 if (val & XRXMAC_STATUS_RXUFLOW)
3864 mp->rx_underflows++;
3865 if (val & XRXMAC_STATUS_RXOFLOW)
3866 mp->rx_overflows++;
3867
3868 val = nr64_mac(XMAC_FC_STAT);
3869 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3870 mp->pause_off_state++;
3871 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3872 mp->pause_on_state++;
3873 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3874 mp->pause_received++;
3875 }
3876
3877 static void niu_bmac_interrupt(struct niu *np)
3878 {
3879 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3880 u64 val;
3881
3882 val = nr64_mac(BTXMAC_STATUS);
3883 if (val & BTXMAC_STATUS_UNDERRUN)
3884 mp->tx_underflow_errors++;
3885 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3886 mp->tx_max_pkt_size_errors++;
3887 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
3888 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
3889 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
3890 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
3891
3892 val = nr64_mac(BRXMAC_STATUS);
3893 if (val & BRXMAC_STATUS_OVERFLOW)
3894 mp->rx_overflows++;
3895 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
3896 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
3897 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
3898 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3899 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
3900 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3901 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
3902 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
3903
3904 val = nr64_mac(BMAC_CTRL_STATUS);
3905 if (val & BMAC_CTRL_STATUS_NOPAUSE)
3906 mp->pause_off_state++;
3907 if (val & BMAC_CTRL_STATUS_PAUSE)
3908 mp->pause_on_state++;
3909 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
3910 mp->pause_received++;
3911 }
3912
3913 static int niu_mac_interrupt(struct niu *np)
3914 {
3915 if (np->flags & NIU_FLAGS_XMAC)
3916 niu_xmac_interrupt(np);
3917 else
3918 niu_bmac_interrupt(np);
3919
3920 return 0;
3921 }
3922
3923 static void niu_log_device_error(struct niu *np, u64 stat)
3924 {
3925 dev_err(np->device, PFX "%s: Core device errors ( ",
3926 np->dev->name);
3927
3928 if (stat & SYS_ERR_MASK_META2)
3929 printk("META2 ");
3930 if (stat & SYS_ERR_MASK_META1)
3931 printk("META1 ");
3932 if (stat & SYS_ERR_MASK_PEU)
3933 printk("PEU ");
3934 if (stat & SYS_ERR_MASK_TXC)
3935 printk("TXC ");
3936 if (stat & SYS_ERR_MASK_RDMC)
3937 printk("RDMC ");
3938 if (stat & SYS_ERR_MASK_TDMC)
3939 printk("TDMC ");
3940 if (stat & SYS_ERR_MASK_ZCP)
3941 printk("ZCP ");
3942 if (stat & SYS_ERR_MASK_FFLP)
3943 printk("FFLP ");
3944 if (stat & SYS_ERR_MASK_IPP)
3945 printk("IPP ");
3946 if (stat & SYS_ERR_MASK_MAC)
3947 printk("MAC ");
3948 if (stat & SYS_ERR_MASK_SMX)
3949 printk("SMX ");
3950
3951 printk(")\n");
3952 }
3953
3954 static int niu_device_error(struct niu *np)
3955 {
3956 u64 stat = nr64(SYS_ERR_STAT);
3957
3958 dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
3959 np->dev->name, (unsigned long long) stat);
3960
3961 niu_log_device_error(np, stat);
3962
3963 return -ENODEV;
3964 }
3965
3966 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
3967 u64 v0, u64 v1, u64 v2)
3968 {
3969
3970 int i, err = 0;
3971
3972 lp->v0 = v0;
3973 lp->v1 = v1;
3974 lp->v2 = v2;
3975
3976 if (v1 & 0x00000000ffffffffULL) {
3977 u32 rx_vec = (v1 & 0xffffffff);
3978
3979 for (i = 0; i < np->num_rx_rings; i++) {
3980 struct rx_ring_info *rp = &np->rx_rings[i];
3981
3982 if (rx_vec & (1 << rp->rx_channel)) {
3983 int r = niu_rx_error(np, rp);
3984 if (r) {
3985 err = r;
3986 } else {
3987 if (!v0)
3988 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3989 RX_DMA_CTL_STAT_MEX);
3990 }
3991 }
3992 }
3993 }
3994 if (v1 & 0x7fffffff00000000ULL) {
3995 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
3996
3997 for (i = 0; i < np->num_tx_rings; i++) {
3998 struct tx_ring_info *rp = &np->tx_rings[i];
3999
4000 if (tx_vec & (1 << rp->tx_channel)) {
4001 int r = niu_tx_error(np, rp);
4002 if (r)
4003 err = r;
4004 }
4005 }
4006 }
4007 if ((v0 | v1) & 0x8000000000000000ULL) {
4008 int r = niu_mif_interrupt(np);
4009 if (r)
4010 err = r;
4011 }
4012 if (v2) {
4013 if (v2 & 0x01ef) {
4014 int r = niu_mac_interrupt(np);
4015 if (r)
4016 err = r;
4017 }
4018 if (v2 & 0x0210) {
4019 int r = niu_device_error(np);
4020 if (r)
4021 err = r;
4022 }
4023 }
4024
4025 if (err)
4026 niu_enable_interrupts(np, 0);
4027
4028 return err;
4029 }
4030
4031 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4032 int ldn)
4033 {
4034 struct rxdma_mailbox *mbox = rp->mbox;
4035 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4036
4037 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4038 RX_DMA_CTL_STAT_RCRTO);
4039 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4040
4041 niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
4042 np->dev->name, (unsigned long long) stat);
4043 }
4044
4045 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4046 int ldn)
4047 {
4048 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4049
4050 niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
4051 np->dev->name, (unsigned long long) rp->tx_cs);
4052 }
4053
4054 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4055 {
4056 struct niu_parent *parent = np->parent;
4057 u32 rx_vec, tx_vec;
4058 int i;
4059
4060 tx_vec = (v0 >> 32);
4061 rx_vec = (v0 & 0xffffffff);
4062
4063 for (i = 0; i < np->num_rx_rings; i++) {
4064 struct rx_ring_info *rp = &np->rx_rings[i];
4065 int ldn = LDN_RXDMA(rp->rx_channel);
4066
4067 if (parent->ldg_map[ldn] != ldg)
4068 continue;
4069
4070 nw64(LD_IM0(ldn), LD_IM0_MASK);
4071 if (rx_vec & (1 << rp->rx_channel))
4072 niu_rxchan_intr(np, rp, ldn);
4073 }
4074
4075 for (i = 0; i < np->num_tx_rings; i++) {
4076 struct tx_ring_info *rp = &np->tx_rings[i];
4077 int ldn = LDN_TXDMA(rp->tx_channel);
4078
4079 if (parent->ldg_map[ldn] != ldg)
4080 continue;
4081
4082 nw64(LD_IM0(ldn), LD_IM0_MASK);
4083 if (tx_vec & (1 << rp->tx_channel))
4084 niu_txchan_intr(np, rp, ldn);
4085 }
4086 }
4087
4088 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4089 u64 v0, u64 v1, u64 v2)
4090 {
4091 if (likely(netif_rx_schedule_prep(&lp->napi))) {
4092 lp->v0 = v0;
4093 lp->v1 = v1;
4094 lp->v2 = v2;
4095 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4096 __netif_rx_schedule(&lp->napi);
4097 }
4098 }
4099
4100 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4101 {
4102 struct niu_ldg *lp = dev_id;
4103 struct niu *np = lp->np;
4104 int ldg = lp->ldg_num;
4105 unsigned long flags;
4106 u64 v0, v1, v2;
4107
4108 if (netif_msg_intr(np))
4109 printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
4110 lp, ldg);
4111
4112 spin_lock_irqsave(&np->lock, flags);
4113
4114 v0 = nr64(LDSV0(ldg));
4115 v1 = nr64(LDSV1(ldg));
4116 v2 = nr64(LDSV2(ldg));
4117
4118 if (netif_msg_intr(np))
4119 printk("v0[%llx] v1[%llx] v2[%llx]\n",
4120 (unsigned long long) v0,
4121 (unsigned long long) v1,
4122 (unsigned long long) v2);
4123
4124 if (unlikely(!v0 && !v1 && !v2)) {
4125 spin_unlock_irqrestore(&np->lock, flags);
4126 return IRQ_NONE;
4127 }
4128
4129 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4130 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4131 if (err)
4132 goto out;
4133 }
4134 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4135 niu_schedule_napi(np, lp, v0, v1, v2);
4136 else
4137 niu_ldg_rearm(np, lp, 1);
4138 out:
4139 spin_unlock_irqrestore(&np->lock, flags);
4140
4141 return IRQ_HANDLED;
4142 }
4143
4144 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4145 {
4146 if (rp->mbox) {
4147 np->ops->free_coherent(np->device,
4148 sizeof(struct rxdma_mailbox),
4149 rp->mbox, rp->mbox_dma);
4150 rp->mbox = NULL;
4151 }
4152 if (rp->rcr) {
4153 np->ops->free_coherent(np->device,
4154 MAX_RCR_RING_SIZE * sizeof(__le64),
4155 rp->rcr, rp->rcr_dma);
4156 rp->rcr = NULL;
4157 rp->rcr_table_size = 0;
4158 rp->rcr_index = 0;
4159 }
4160 if (rp->rbr) {
4161 niu_rbr_free(np, rp);
4162
4163 np->ops->free_coherent(np->device,
4164 MAX_RBR_RING_SIZE * sizeof(__le32),
4165 rp->rbr, rp->rbr_dma);
4166 rp->rbr = NULL;
4167 rp->rbr_table_size = 0;
4168 rp->rbr_index = 0;
4169 }
4170 kfree(rp->rxhash);
4171 rp->rxhash = NULL;
4172 }
4173
4174 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4175 {
4176 if (rp->mbox) {
4177 np->ops->free_coherent(np->device,
4178 sizeof(struct txdma_mailbox),
4179 rp->mbox, rp->mbox_dma);
4180 rp->mbox = NULL;
4181 }
4182 if (rp->descr) {
4183 int i;
4184
4185 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4186 if (rp->tx_buffs[i].skb)
4187 (void) release_tx_packet(np, rp, i);
4188 }
4189
4190 np->ops->free_coherent(np->device,
4191 MAX_TX_RING_SIZE * sizeof(__le64),
4192 rp->descr, rp->descr_dma);
4193 rp->descr = NULL;
4194 rp->pending = 0;
4195 rp->prod = 0;
4196 rp->cons = 0;
4197 rp->wrap_bit = 0;
4198 }
4199 }
4200
4201 static void niu_free_channels(struct niu *np)
4202 {
4203 int i;
4204
4205 if (np->rx_rings) {
4206 for (i = 0; i < np->num_rx_rings; i++) {
4207 struct rx_ring_info *rp = &np->rx_rings[i];
4208
4209 niu_free_rx_ring_info(np, rp);
4210 }
4211 kfree(np->rx_rings);
4212 np->rx_rings = NULL;
4213 np->num_rx_rings = 0;
4214 }
4215
4216 if (np->tx_rings) {
4217 for (i = 0; i < np->num_tx_rings; i++) {
4218 struct tx_ring_info *rp = &np->tx_rings[i];
4219
4220 niu_free_tx_ring_info(np, rp);
4221 }
4222 kfree(np->tx_rings);
4223 np->tx_rings = NULL;
4224 np->num_tx_rings = 0;
4225 }
4226 }
4227
4228 static int niu_alloc_rx_ring_info(struct niu *np,
4229 struct rx_ring_info *rp)
4230 {
4231 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4232
4233 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4234 GFP_KERNEL);
4235 if (!rp->rxhash)
4236 return -ENOMEM;
4237
4238 rp->mbox = np->ops->alloc_coherent(np->device,
4239 sizeof(struct rxdma_mailbox),
4240 &rp->mbox_dma, GFP_KERNEL);
4241 if (!rp->mbox)
4242 return -ENOMEM;
4243 if ((unsigned long)rp->mbox & (64UL - 1)) {
4244 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4245 "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
4246 return -EINVAL;
4247 }
4248
4249 rp->rcr = np->ops->alloc_coherent(np->device,
4250 MAX_RCR_RING_SIZE * sizeof(__le64),
4251 &rp->rcr_dma, GFP_KERNEL);
4252 if (!rp->rcr)
4253 return -ENOMEM;
4254 if ((unsigned long)rp->rcr & (64UL - 1)) {
4255 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4256 "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
4257 return -EINVAL;
4258 }
4259 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4260 rp->rcr_index = 0;
4261
4262 rp->rbr = np->ops->alloc_coherent(np->device,
4263 MAX_RBR_RING_SIZE * sizeof(__le32),
4264 &rp->rbr_dma, GFP_KERNEL);
4265 if (!rp->rbr)
4266 return -ENOMEM;
4267 if ((unsigned long)rp->rbr & (64UL - 1)) {
4268 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4269 "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
4270 return -EINVAL;
4271 }
4272 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4273 rp->rbr_index = 0;
4274 rp->rbr_pending = 0;
4275
4276 return 0;
4277 }
4278
4279 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4280 {
4281 int mtu = np->dev->mtu;
4282
4283 /* These values are recommended by the HW designers for fair
4284 * utilization of DRR amongst the rings.
4285 */
4286 rp->max_burst = mtu + 32;
4287 if (rp->max_burst > 4096)
4288 rp->max_burst = 4096;
4289 }
4290
4291 static int niu_alloc_tx_ring_info(struct niu *np,
4292 struct tx_ring_info *rp)
4293 {
4294 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4295
4296 rp->mbox = np->ops->alloc_coherent(np->device,
4297 sizeof(struct txdma_mailbox),
4298 &rp->mbox_dma, GFP_KERNEL);
4299 if (!rp->mbox)
4300 return -ENOMEM;
4301 if ((unsigned long)rp->mbox & (64UL - 1)) {
4302 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4303 "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
4304 return -EINVAL;
4305 }
4306
4307 rp->descr = np->ops->alloc_coherent(np->device,
4308 MAX_TX_RING_SIZE * sizeof(__le64),
4309 &rp->descr_dma, GFP_KERNEL);
4310 if (!rp->descr)
4311 return -ENOMEM;
4312 if ((unsigned long)rp->descr & (64UL - 1)) {
4313 dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
4314 "TXDMA descr table %p\n", np->dev->name, rp->descr);
4315 return -EINVAL;
4316 }
4317
4318 rp->pending = MAX_TX_RING_SIZE;
4319 rp->prod = 0;
4320 rp->cons = 0;
4321 rp->wrap_bit = 0;
4322
4323 /* XXX make these configurable... XXX */
4324 rp->mark_freq = rp->pending / 4;
4325
4326 niu_set_max_burst(np, rp);
4327
4328 return 0;
4329 }
4330
4331 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4332 {
4333 u16 bss;
4334
4335 bss = min(PAGE_SHIFT, 15);
4336
4337 rp->rbr_block_size = 1 << bss;
4338 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4339
4340 rp->rbr_sizes[0] = 256;
4341 rp->rbr_sizes[1] = 1024;
4342 if (np->dev->mtu > ETH_DATA_LEN) {
4343 switch (PAGE_SIZE) {
4344 case 4 * 1024:
4345 rp->rbr_sizes[2] = 4096;
4346 break;
4347
4348 default:
4349 rp->rbr_sizes[2] = 8192;
4350 break;
4351 }
4352 } else {
4353 rp->rbr_sizes[2] = 2048;
4354 }
4355 rp->rbr_sizes[3] = rp->rbr_block_size;
4356 }
4357
4358 static int niu_alloc_channels(struct niu *np)
4359 {
4360 struct niu_parent *parent = np->parent;
4361 int first_rx_channel, first_tx_channel;
4362 int i, port, err;
4363
4364 port = np->port;
4365 first_rx_channel = first_tx_channel = 0;
4366 for (i = 0; i < port; i++) {
4367 first_rx_channel += parent->rxchan_per_port[i];
4368 first_tx_channel += parent->txchan_per_port[i];
4369 }
4370
4371 np->num_rx_rings = parent->rxchan_per_port[port];
4372 np->num_tx_rings = parent->txchan_per_port[port];
4373
4374 np->dev->real_num_tx_queues = np->num_tx_rings;
4375
4376 np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
4377 GFP_KERNEL);
4378 err = -ENOMEM;
4379 if (!np->rx_rings)
4380 goto out_err;
4381
4382 for (i = 0; i < np->num_rx_rings; i++) {
4383 struct rx_ring_info *rp = &np->rx_rings[i];
4384
4385 rp->np = np;
4386 rp->rx_channel = first_rx_channel + i;
4387
4388 err = niu_alloc_rx_ring_info(np, rp);
4389 if (err)
4390 goto out_err;
4391
4392 niu_size_rbr(np, rp);
4393
4394 /* XXX better defaults, configurable, etc... XXX */
4395 rp->nonsyn_window = 64;
4396 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4397 rp->syn_window = 64;
4398 rp->syn_threshold = rp->rcr_table_size - 64;
4399 rp->rcr_pkt_threshold = 16;
4400 rp->rcr_timeout = 8;
4401 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4402 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4403 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4404
4405 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4406 if (err)
4407 return err;
4408 }
4409
4410 np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
4411 GFP_KERNEL);
4412 err = -ENOMEM;
4413 if (!np->tx_rings)
4414 goto out_err;
4415
4416 for (i = 0; i < np->num_tx_rings; i++) {
4417 struct tx_ring_info *rp = &np->tx_rings[i];
4418
4419 rp->np = np;
4420 rp->tx_channel = first_tx_channel + i;
4421
4422 err = niu_alloc_tx_ring_info(np, rp);
4423 if (err)
4424 goto out_err;
4425 }
4426
4427 return 0;
4428
4429 out_err:
4430 niu_free_channels(np);
4431 return err;
4432 }
4433
4434 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4435 {
4436 int limit = 1000;
4437
4438 while (--limit > 0) {
4439 u64 val = nr64(TX_CS(channel));
4440 if (val & TX_CS_SNG_STATE)
4441 return 0;
4442 }
4443 return -ENODEV;
4444 }
4445
4446 static int niu_tx_channel_stop(struct niu *np, int channel)
4447 {
4448 u64 val = nr64(TX_CS(channel));
4449
4450 val |= TX_CS_STOP_N_GO;
4451 nw64(TX_CS(channel), val);
4452
4453 return niu_tx_cs_sng_poll(np, channel);
4454 }
4455
4456 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4457 {
4458 int limit = 1000;
4459
4460 while (--limit > 0) {
4461 u64 val = nr64(TX_CS(channel));
4462 if (!(val & TX_CS_RST))
4463 return 0;
4464 }
4465 return -ENODEV;
4466 }
4467
4468 static int niu_tx_channel_reset(struct niu *np, int channel)
4469 {
4470 u64 val = nr64(TX_CS(channel));
4471 int err;
4472
4473 val |= TX_CS_RST;
4474 nw64(TX_CS(channel), val);
4475
4476 err = niu_tx_cs_reset_poll(np, channel);
4477 if (!err)
4478 nw64(TX_RING_KICK(channel), 0);
4479
4480 return err;
4481 }
4482
4483 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4484 {
4485 u64 val;
4486
4487 nw64(TX_LOG_MASK1(channel), 0);
4488 nw64(TX_LOG_VAL1(channel), 0);
4489 nw64(TX_LOG_MASK2(channel), 0);
4490 nw64(TX_LOG_VAL2(channel), 0);
4491 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4492 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4493 nw64(TX_LOG_PAGE_HDL(channel), 0);
4494
4495 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4496 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4497 nw64(TX_LOG_PAGE_VLD(channel), val);
4498
4499 /* XXX TXDMA 32bit mode? XXX */
4500
4501 return 0;
4502 }
4503
4504 static void niu_txc_enable_port(struct niu *np, int on)
4505 {
4506 unsigned long flags;
4507 u64 val, mask;
4508
4509 niu_lock_parent(np, flags);
4510 val = nr64(TXC_CONTROL);
4511 mask = (u64)1 << np->port;
4512 if (on) {
4513 val |= TXC_CONTROL_ENABLE | mask;
4514 } else {
4515 val &= ~mask;
4516 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4517 val &= ~TXC_CONTROL_ENABLE;
4518 }
4519 nw64(TXC_CONTROL, val);
4520 niu_unlock_parent(np, flags);
4521 }
4522
4523 static void niu_txc_set_imask(struct niu *np, u64 imask)
4524 {
4525 unsigned long flags;
4526 u64 val;
4527
4528 niu_lock_parent(np, flags);
4529 val = nr64(TXC_INT_MASK);
4530 val &= ~TXC_INT_MASK_VAL(np->port);
4531 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4532 niu_unlock_parent(np, flags);
4533 }
4534
4535 static void niu_txc_port_dma_enable(struct niu *np, int on)
4536 {
4537 u64 val = 0;
4538
4539 if (on) {
4540 int i;
4541
4542 for (i = 0; i < np->num_tx_rings; i++)
4543 val |= (1 << np->tx_rings[i].tx_channel);
4544 }
4545 nw64(TXC_PORT_DMA(np->port), val);
4546 }
4547
4548 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4549 {
4550 int err, channel = rp->tx_channel;
4551 u64 val, ring_len;
4552
4553 err = niu_tx_channel_stop(np, channel);
4554 if (err)
4555 return err;
4556
4557 err = niu_tx_channel_reset(np, channel);
4558 if (err)
4559 return err;
4560
4561 err = niu_tx_channel_lpage_init(np, channel);
4562 if (err)
4563 return err;
4564
4565 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4566 nw64(TX_ENT_MSK(channel), 0);
4567
4568 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4569 TX_RNG_CFIG_STADDR)) {
4570 dev_err(np->device, PFX "%s: TX ring channel %d "
4571 "DMA addr (%llx) is not aligned.\n",
4572 np->dev->name, channel,
4573 (unsigned long long) rp->descr_dma);
4574 return -EINVAL;
4575 }
4576
4577 /* The length field in TX_RNG_CFIG is measured in 64-byte
4578 * blocks. rp->pending is the number of TX descriptors in
4579 * our ring, 8 bytes each, thus we divide by 8 bytes more
4580 * to get the proper value the chip wants.
4581 */
4582 ring_len = (rp->pending / 8);
4583
4584 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4585 rp->descr_dma);
4586 nw64(TX_RNG_CFIG(channel), val);
4587
4588 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4589 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4590 dev_err(np->device, PFX "%s: TX ring channel %d "
4591 "MBOX addr (%llx) is has illegal bits.\n",
4592 np->dev->name, channel,
4593 (unsigned long long) rp->mbox_dma);
4594 return -EINVAL;
4595 }
4596 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4597 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4598
4599 nw64(TX_CS(channel), 0);
4600
4601 rp->last_pkt_cnt = 0;
4602
4603 return 0;
4604 }
4605
4606 static void niu_init_rdc_groups(struct niu *np)
4607 {
4608 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4609 int i, first_table_num = tp->first_table_num;
4610
4611 for (i = 0; i < tp->num_tables; i++) {
4612 struct rdc_table *tbl = &tp->tables[i];
4613 int this_table = first_table_num + i;
4614 int slot;
4615
4616 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4617 nw64(RDC_TBL(this_table, slot),
4618 tbl->rxdma_channel[slot]);
4619 }
4620
4621 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4622 }
4623
4624 static void niu_init_drr_weight(struct niu *np)
4625 {
4626 int type = phy_decode(np->parent->port_phy, np->port);
4627 u64 val;
4628
4629 switch (type) {
4630 case PORT_TYPE_10G:
4631 val = PT_DRR_WEIGHT_DEFAULT_10G;
4632 break;
4633
4634 case PORT_TYPE_1G:
4635 default:
4636 val = PT_DRR_WEIGHT_DEFAULT_1G;
4637 break;
4638 }
4639 nw64(PT_DRR_WT(np->port), val);
4640 }
4641
4642 static int niu_init_hostinfo(struct niu *np)
4643 {
4644 struct niu_parent *parent = np->parent;
4645 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4646 int i, err, num_alt = niu_num_alt_addr(np);
4647 int first_rdc_table = tp->first_table_num;
4648
4649 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4650 if (err)
4651 return err;
4652
4653 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4654 if (err)
4655 return err;
4656
4657 for (i = 0; i < num_alt; i++) {
4658 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4659 if (err)
4660 return err;
4661 }
4662
4663 return 0;
4664 }
4665
4666 static int niu_rx_channel_reset(struct niu *np, int channel)
4667 {
4668 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4669 RXDMA_CFIG1_RST, 1000, 10,
4670 "RXDMA_CFIG1");
4671 }
4672
4673 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4674 {
4675 u64 val;
4676
4677 nw64(RX_LOG_MASK1(channel), 0);
4678 nw64(RX_LOG_VAL1(channel), 0);
4679 nw64(RX_LOG_MASK2(channel), 0);
4680 nw64(RX_LOG_VAL2(channel), 0);
4681 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4682 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4683 nw64(RX_LOG_PAGE_HDL(channel), 0);
4684
4685 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4686 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4687 nw64(RX_LOG_PAGE_VLD(channel), val);
4688
4689 return 0;
4690 }
4691
4692 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4693 {
4694 u64 val;
4695
4696 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4697 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4698 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4699 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4700 nw64(RDC_RED_PARA(rp->rx_channel), val);
4701 }
4702
4703 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4704 {
4705 u64 val = 0;
4706
4707 switch (rp->rbr_block_size) {
4708 case 4 * 1024:
4709 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4710 break;
4711 case 8 * 1024:
4712 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4713 break;
4714 case 16 * 1024:
4715 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4716 break;
4717 case 32 * 1024:
4718 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4719 break;
4720 default:
4721 return -EINVAL;
4722 }
4723 val |= RBR_CFIG_B_VLD2;
4724 switch (rp->rbr_sizes[2]) {
4725 case 2 * 1024:
4726 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4727 break;
4728 case 4 * 1024:
4729 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4730 break;
4731 case 8 * 1024:
4732 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4733 break;
4734 case 16 * 1024:
4735 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4736 break;
4737
4738 default:
4739 return -EINVAL;
4740 }
4741 val |= RBR_CFIG_B_VLD1;
4742 switch (rp->rbr_sizes[1]) {
4743 case 1 * 1024:
4744 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4745 break;
4746 case 2 * 1024:
4747 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4748 break;
4749 case 4 * 1024:
4750 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4751 break;
4752 case 8 * 1024:
4753 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4754 break;
4755
4756 default:
4757 return -EINVAL;
4758 }
4759 val |= RBR_CFIG_B_VLD0;
4760 switch (rp->rbr_sizes[0]) {
4761 case 256:
4762 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4763 break;
4764 case 512:
4765 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4766 break;
4767 case 1 * 1024:
4768 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4769 break;
4770 case 2 * 1024:
4771 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4772 break;
4773
4774 default:
4775 return -EINVAL;
4776 }
4777
4778 *ret = val;
4779 return 0;
4780 }
4781
4782 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4783 {
4784 u64 val = nr64(RXDMA_CFIG1(channel));
4785 int limit;
4786
4787 if (on)
4788 val |= RXDMA_CFIG1_EN;
4789 else
4790 val &= ~RXDMA_CFIG1_EN;
4791 nw64(RXDMA_CFIG1(channel), val);
4792
4793 limit = 1000;
4794 while (--limit > 0) {
4795 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4796 break;
4797 udelay(10);
4798 }
4799 if (limit <= 0)
4800 return -ENODEV;
4801 return 0;
4802 }
4803
4804 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4805 {
4806 int err, channel = rp->rx_channel;
4807 u64 val;
4808
4809 err = niu_rx_channel_reset(np, channel);
4810 if (err)
4811 return err;
4812
4813 err = niu_rx_channel_lpage_init(np, channel);
4814 if (err)
4815 return err;
4816
4817 niu_rx_channel_wred_init(np, rp);
4818
4819 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4820 nw64(RX_DMA_CTL_STAT(channel),
4821 (RX_DMA_CTL_STAT_MEX |
4822 RX_DMA_CTL_STAT_RCRTHRES |
4823 RX_DMA_CTL_STAT_RCRTO |
4824 RX_DMA_CTL_STAT_RBR_EMPTY));
4825 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4826 nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
4827 nw64(RBR_CFIG_A(channel),
4828 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4829 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4830 err = niu_compute_rbr_cfig_b(rp, &val);
4831 if (err)
4832 return err;
4833 nw64(RBR_CFIG_B(channel), val);
4834 nw64(RCRCFIG_A(channel),
4835 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4836 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4837 nw64(RCRCFIG_B(channel),
4838 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4839 RCRCFIG_B_ENTOUT |
4840 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4841
4842 err = niu_enable_rx_channel(np, channel, 1);
4843 if (err)
4844 return err;
4845
4846 nw64(RBR_KICK(channel), rp->rbr_index);
4847
4848 val = nr64(RX_DMA_CTL_STAT(channel));
4849 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4850 nw64(RX_DMA_CTL_STAT(channel), val);
4851
4852 return 0;
4853 }
4854
4855 static int niu_init_rx_channels(struct niu *np)
4856 {
4857 unsigned long flags;
4858 u64 seed = jiffies_64;
4859 int err, i;
4860
4861 niu_lock_parent(np, flags);
4862 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4863 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4864 niu_unlock_parent(np, flags);
4865
4866 /* XXX RXDMA 32bit mode? XXX */
4867
4868 niu_init_rdc_groups(np);
4869 niu_init_drr_weight(np);
4870
4871 err = niu_init_hostinfo(np);
4872 if (err)
4873 return err;
4874
4875 for (i = 0; i < np->num_rx_rings; i++) {
4876 struct rx_ring_info *rp = &np->rx_rings[i];
4877
4878 err = niu_init_one_rx_channel(np, rp);
4879 if (err)
4880 return err;
4881 }
4882
4883 return 0;
4884 }
4885
4886 static int niu_set_ip_frag_rule(struct niu *np)
4887 {
4888 struct niu_parent *parent = np->parent;
4889 struct niu_classifier *cp = &np->clas;
4890 struct niu_tcam_entry *tp;
4891 int index, err;
4892
4893 /* XXX fix this allocation scheme XXX */
4894 index = cp->tcam_index;
4895 tp = &parent->tcam[index];
4896
4897 /* Note that the noport bit is the same in both ipv4 and
4898 * ipv6 format TCAM entries.
4899 */
4900 memset(tp, 0, sizeof(*tp));
4901 tp->key[1] = TCAM_V4KEY1_NOPORT;
4902 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
4903 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
4904 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
4905 err = tcam_write(np, index, tp->key, tp->key_mask);
4906 if (err)
4907 return err;
4908 err = tcam_assoc_write(np, index, tp->assoc_data);
4909 if (err)
4910 return err;
4911
4912 return 0;
4913 }
4914
4915 static int niu_init_classifier_hw(struct niu *np)
4916 {
4917 struct niu_parent *parent = np->parent;
4918 struct niu_classifier *cp = &np->clas;
4919 int i, err;
4920
4921 nw64(H1POLY, cp->h1_init);
4922 nw64(H2POLY, cp->h2_init);
4923
4924 err = niu_init_hostinfo(np);
4925 if (err)
4926 return err;
4927
4928 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
4929 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
4930
4931 vlan_tbl_write(np, i, np->port,
4932 vp->vlan_pref, vp->rdc_num);
4933 }
4934
4935 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
4936 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
4937
4938 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
4939 ap->rdc_num, ap->mac_pref);
4940 if (err)
4941 return err;
4942 }
4943
4944 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
4945 int index = i - CLASS_CODE_USER_PROG1;
4946
4947 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
4948 if (err)
4949 return err;
4950 err = niu_set_flow_key(np, i, parent->flow_key[index]);
4951 if (err)
4952 return err;
4953 }
4954
4955 err = niu_set_ip_frag_rule(np);
4956 if (err)
4957 return err;
4958
4959 tcam_enable(np, 1);
4960
4961 return 0;
4962 }
4963
4964 static int niu_zcp_write(struct niu *np, int index, u64 *data)
4965 {
4966 nw64(ZCP_RAM_DATA0, data[0]);
4967 nw64(ZCP_RAM_DATA1, data[1]);
4968 nw64(ZCP_RAM_DATA2, data[2]);
4969 nw64(ZCP_RAM_DATA3, data[3]);
4970 nw64(ZCP_RAM_DATA4, data[4]);
4971 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
4972 nw64(ZCP_RAM_ACC,
4973 (ZCP_RAM_ACC_WRITE |
4974 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
4975 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
4976
4977 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4978 1000, 100);
4979 }
4980
4981 static int niu_zcp_read(struct niu *np, int index, u64 *data)
4982 {
4983 int err;
4984
4985 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
4986 1000, 100);
4987 if (err) {
4988 dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
4989 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
4990 (unsigned long long) nr64(ZCP_RAM_ACC));
4991 return err;
4992 }
4993
4994 nw64(ZCP_RAM_ACC,
4995 (ZCP_RAM_ACC_READ |
4996 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
4997 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
4998
4999 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5000 1000, 100);
5001 if (err) {
5002 dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
5003 "ZCP_RAM_ACC[%llx]\n", np->dev->name,
5004 (unsigned long long) nr64(ZCP_RAM_ACC));
5005 return err;
5006 }
5007
5008 data[0] = nr64(ZCP_RAM_DATA0);
5009 data[1] = nr64(ZCP_RAM_DATA1);
5010 data[2] = nr64(ZCP_RAM_DATA2);
5011 data[3] = nr64(ZCP_RAM_DATA3);
5012 data[4] = nr64(ZCP_RAM_DATA4);
5013
5014 return 0;
5015 }
5016
5017 static void niu_zcp_cfifo_reset(struct niu *np)
5018 {
5019 u64 val = nr64(RESET_CFIFO);
5020
5021 val |= RESET_CFIFO_RST(np->port);
5022 nw64(RESET_CFIFO, val);
5023 udelay(10);
5024
5025 val &= ~RESET_CFIFO_RST(np->port);
5026 nw64(RESET_CFIFO, val);
5027 }
5028
5029 static int niu_init_zcp(struct niu *np)
5030 {
5031 u64 data[5], rbuf[5];
5032 int i, max, err;
5033
5034 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5035 if (np->port == 0 || np->port == 1)
5036 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5037 else
5038 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5039 } else
5040 max = NIU_CFIFO_ENTRIES;
5041
5042 data[0] = 0;
5043 data[1] = 0;
5044 data[2] = 0;
5045 data[3] = 0;
5046 data[4] = 0;
5047
5048 for (i = 0; i < max; i++) {
5049 err = niu_zcp_write(np, i, data);
5050 if (err)
5051 return err;
5052 err = niu_zcp_read(np, i, rbuf);
5053 if (err)
5054 return err;
5055 }
5056
5057 niu_zcp_cfifo_reset(np);
5058 nw64(CFIFO_ECC(np->port), 0);
5059 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5060 (void) nr64(ZCP_INT_STAT);
5061 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5062
5063 return 0;
5064 }
5065
5066 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5067 {
5068 u64 val = nr64_ipp(IPP_CFIG);
5069
5070 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5071 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5072 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5073 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5074 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5075 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5076 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5077 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5078 }
5079
5080 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5081 {
5082 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5083 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5084 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5085 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5086 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5087 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5088 }
5089
5090 static int niu_ipp_reset(struct niu *np)
5091 {
5092 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5093 1000, 100, "IPP_CFIG");
5094 }
5095
5096 static int niu_init_ipp(struct niu *np)
5097 {
5098 u64 data[5], rbuf[5], val;
5099 int i, max, err;
5100
5101 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5102 if (np->port == 0 || np->port == 1)
5103 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5104 else
5105 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5106 } else
5107 max = NIU_DFIFO_ENTRIES;
5108
5109 data[0] = 0;
5110 data[1] = 0;
5111 data[2] = 0;
5112 data[3] = 0;
5113 data[4] = 0;
5114
5115 for (i = 0; i < max; i++) {
5116 niu_ipp_write(np, i, data);
5117 niu_ipp_read(np, i, rbuf);
5118 }
5119
5120 (void) nr64_ipp(IPP_INT_STAT);
5121 (void) nr64_ipp(IPP_INT_STAT);
5122
5123 err = niu_ipp_reset(np);
5124 if (err)
5125 return err;
5126
5127 (void) nr64_ipp(IPP_PKT_DIS);
5128 (void) nr64_ipp(IPP_BAD_CS_CNT);
5129 (void) nr64_ipp(IPP_ECC);
5130
5131 (void) nr64_ipp(IPP_INT_STAT);
5132
5133 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5134
5135 val = nr64_ipp(IPP_CFIG);
5136 val &= ~IPP_CFIG_IP_MAX_PKT;
5137 val |= (IPP_CFIG_IPP_ENABLE |
5138 IPP_CFIG_DFIFO_ECC_EN |
5139 IPP_CFIG_DROP_BAD_CRC |
5140 IPP_CFIG_CKSUM_EN |
5141 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5142 nw64_ipp(IPP_CFIG, val);
5143
5144 return 0;
5145 }
5146
5147 static void niu_handle_led(struct niu *np, int status)
5148 {
5149 u64 val;
5150 val = nr64_mac(XMAC_CONFIG);
5151
5152 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5153 (np->flags & NIU_FLAGS_FIBER) != 0) {
5154 if (status) {
5155 val |= XMAC_CONFIG_LED_POLARITY;
5156 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5157 } else {
5158 val |= XMAC_CONFIG_FORCE_LED_ON;
5159 val &= ~XMAC_CONFIG_LED_POLARITY;
5160 }
5161 }
5162
5163 nw64_mac(XMAC_CONFIG, val);
5164 }
5165
5166 static void niu_init_xif_xmac(struct niu *np)
5167 {
5168 struct niu_link_config *lp = &np->link_config;
5169 u64 val;
5170
5171 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5172 val = nr64(MIF_CONFIG);
5173 val |= MIF_CONFIG_ATCA_GE;
5174 nw64(MIF_CONFIG, val);
5175 }
5176
5177 val = nr64_mac(XMAC_CONFIG);
5178 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5179
5180 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5181
5182 if (lp->loopback_mode == LOOPBACK_MAC) {
5183 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5184 val |= XMAC_CONFIG_LOOPBACK;
5185 } else {
5186 val &= ~XMAC_CONFIG_LOOPBACK;
5187 }
5188
5189 if (np->flags & NIU_FLAGS_10G) {
5190 val &= ~XMAC_CONFIG_LFS_DISABLE;
5191 } else {
5192 val |= XMAC_CONFIG_LFS_DISABLE;
5193 if (!(np->flags & NIU_FLAGS_FIBER) &&
5194 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5195 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5196 else
5197 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5198 }
5199
5200 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5201
5202 if (lp->active_speed == SPEED_100)
5203 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5204 else
5205 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5206
5207 nw64_mac(XMAC_CONFIG, val);
5208
5209 val = nr64_mac(XMAC_CONFIG);
5210 val &= ~XMAC_CONFIG_MODE_MASK;
5211 if (np->flags & NIU_FLAGS_10G) {
5212 val |= XMAC_CONFIG_MODE_XGMII;
5213 } else {
5214 if (lp->active_speed == SPEED_100)
5215 val |= XMAC_CONFIG_MODE_MII;
5216 else
5217 val |= XMAC_CONFIG_MODE_GMII;
5218 }
5219
5220 nw64_mac(XMAC_CONFIG, val);
5221 }
5222
5223 static void niu_init_xif_bmac(struct niu *np)
5224 {
5225 struct niu_link_config *lp = &np->link_config;
5226 u64 val;
5227
5228 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5229
5230 if (lp->loopback_mode == LOOPBACK_MAC)
5231 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5232 else
5233 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5234
5235 if (lp->active_speed == SPEED_1000)
5236 val |= BMAC_XIF_CONFIG_GMII_MODE;
5237 else
5238 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5239
5240 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5241 BMAC_XIF_CONFIG_LED_POLARITY);
5242
5243 if (!(np->flags & NIU_FLAGS_10G) &&
5244 !(np->flags & NIU_FLAGS_FIBER) &&
5245 lp->active_speed == SPEED_100)
5246 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5247 else
5248 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5249
5250 nw64_mac(BMAC_XIF_CONFIG, val);
5251 }
5252
5253 static void niu_init_xif(struct niu *np)
5254 {
5255 if (np->flags & NIU_FLAGS_XMAC)
5256 niu_init_xif_xmac(np);
5257 else
5258 niu_init_xif_bmac(np);
5259 }
5260
5261 static void niu_pcs_mii_reset(struct niu *np)
5262 {
5263 int limit = 1000;
5264 u64 val = nr64_pcs(PCS_MII_CTL);
5265 val |= PCS_MII_CTL_RST;
5266 nw64_pcs(PCS_MII_CTL, val);
5267 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5268 udelay(100);
5269 val = nr64_pcs(PCS_MII_CTL);
5270 }
5271 }
5272
5273 static void niu_xpcs_reset(struct niu *np)
5274 {
5275 int limit = 1000;
5276 u64 val = nr64_xpcs(XPCS_CONTROL1);
5277 val |= XPCS_CONTROL1_RESET;
5278 nw64_xpcs(XPCS_CONTROL1, val);
5279 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5280 udelay(100);
5281 val = nr64_xpcs(XPCS_CONTROL1);
5282 }
5283 }
5284
5285 static int niu_init_pcs(struct niu *np)
5286 {
5287 struct niu_link_config *lp = &np->link_config;
5288 u64 val;
5289
5290 switch (np->flags & (NIU_FLAGS_10G |
5291 NIU_FLAGS_FIBER |
5292 NIU_FLAGS_XCVR_SERDES)) {
5293 case NIU_FLAGS_FIBER:
5294 /* 1G fiber */
5295 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5296 nw64_pcs(PCS_DPATH_MODE, 0);
5297 niu_pcs_mii_reset(np);
5298 break;
5299
5300 case NIU_FLAGS_10G:
5301 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5302 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5303 /* 10G SERDES */
5304 if (!(np->flags & NIU_FLAGS_XMAC))
5305 return -EINVAL;
5306
5307 /* 10G copper or fiber */
5308 val = nr64_mac(XMAC_CONFIG);
5309 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5310 nw64_mac(XMAC_CONFIG, val);
5311
5312 niu_xpcs_reset(np);
5313
5314 val = nr64_xpcs(XPCS_CONTROL1);
5315 if (lp->loopback_mode == LOOPBACK_PHY)
5316 val |= XPCS_CONTROL1_LOOPBACK;
5317 else
5318 val &= ~XPCS_CONTROL1_LOOPBACK;
5319 nw64_xpcs(XPCS_CONTROL1, val);
5320
5321 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5322 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5323 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5324 break;
5325
5326
5327 case NIU_FLAGS_XCVR_SERDES:
5328 /* 1G SERDES */
5329 niu_pcs_mii_reset(np);
5330 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5331 nw64_pcs(PCS_DPATH_MODE, 0);
5332 break;
5333
5334 case 0:
5335 /* 1G copper */
5336 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5337 /* 1G RGMII FIBER */
5338 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5339 niu_pcs_mii_reset(np);
5340 break;
5341
5342 default:
5343 return -EINVAL;
5344 }
5345
5346 return 0;
5347 }
5348
5349 static int niu_reset_tx_xmac(struct niu *np)
5350 {
5351 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5352 (XTXMAC_SW_RST_REG_RS |
5353 XTXMAC_SW_RST_SOFT_RST),
5354 1000, 100, "XTXMAC_SW_RST");
5355 }
5356
5357 static int niu_reset_tx_bmac(struct niu *np)
5358 {
5359 int limit;
5360
5361 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5362 limit = 1000;
5363 while (--limit >= 0) {
5364 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5365 break;
5366 udelay(100);
5367 }
5368 if (limit < 0) {
5369 dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
5370 "BTXMAC_SW_RST[%llx]\n",
5371 np->port,
5372 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5373 return -ENODEV;
5374 }
5375
5376 return 0;
5377 }
5378
5379 static int niu_reset_tx_mac(struct niu *np)
5380 {
5381 if (np->flags & NIU_FLAGS_XMAC)
5382 return niu_reset_tx_xmac(np);
5383 else
5384 return niu_reset_tx_bmac(np);
5385 }
5386
5387 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5388 {
5389 u64 val;
5390
5391 val = nr64_mac(XMAC_MIN);
5392 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5393 XMAC_MIN_RX_MIN_PKT_SIZE);
5394 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5395 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5396 nw64_mac(XMAC_MIN, val);
5397
5398 nw64_mac(XMAC_MAX, max);
5399
5400 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5401
5402 val = nr64_mac(XMAC_IPG);
5403 if (np->flags & NIU_FLAGS_10G) {
5404 val &= ~XMAC_IPG_IPG_XGMII;
5405 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5406 } else {
5407 val &= ~XMAC_IPG_IPG_MII_GMII;
5408 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5409 }
5410 nw64_mac(XMAC_IPG, val);
5411
5412 val = nr64_mac(XMAC_CONFIG);
5413 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5414 XMAC_CONFIG_STRETCH_MODE |
5415 XMAC_CONFIG_VAR_MIN_IPG_EN |
5416 XMAC_CONFIG_TX_ENABLE);
5417 nw64_mac(XMAC_CONFIG, val);
5418
5419 nw64_mac(TXMAC_FRM_CNT, 0);
5420 nw64_mac(TXMAC_BYTE_CNT, 0);
5421 }
5422
5423 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5424 {
5425 u64 val;
5426
5427 nw64_mac(BMAC_MIN_FRAME, min);
5428 nw64_mac(BMAC_MAX_FRAME, max);
5429
5430 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5431 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5432 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5433
5434 val = nr64_mac(BTXMAC_CONFIG);
5435 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5436 BTXMAC_CONFIG_ENABLE);
5437 nw64_mac(BTXMAC_CONFIG, val);
5438 }
5439
5440 static void niu_init_tx_mac(struct niu *np)
5441 {
5442 u64 min, max;
5443
5444 min = 64;
5445 if (np->dev->mtu > ETH_DATA_LEN)
5446 max = 9216;
5447 else
5448 max = 1522;
5449
5450 /* The XMAC_MIN register only accepts values for TX min which
5451 * have the low 3 bits cleared.
5452 */
5453 BUILD_BUG_ON(min & 0x7);
5454
5455 if (np->flags & NIU_FLAGS_XMAC)
5456 niu_init_tx_xmac(np, min, max);
5457 else
5458 niu_init_tx_bmac(np, min, max);
5459 }
5460
5461 static int niu_reset_rx_xmac(struct niu *np)
5462 {
5463 int limit;
5464
5465 nw64_mac(XRXMAC_SW_RST,
5466 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5467 limit = 1000;
5468 while (--limit >= 0) {
5469 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5470 XRXMAC_SW_RST_SOFT_RST)))
5471 break;
5472 udelay(100);
5473 }
5474 if (limit < 0) {
5475 dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
5476 "XRXMAC_SW_RST[%llx]\n",
5477 np->port,
5478 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5479 return -ENODEV;
5480 }
5481
5482 return 0;
5483 }
5484
5485 static int niu_reset_rx_bmac(struct niu *np)
5486 {
5487 int limit;
5488
5489 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5490 limit = 1000;
5491 while (--limit >= 0) {
5492 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5493 break;
5494 udelay(100);
5495 }
5496 if (limit < 0) {
5497 dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
5498 "BRXMAC_SW_RST[%llx]\n",
5499 np->port,
5500 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5501 return -ENODEV;
5502 }
5503
5504 return 0;
5505 }
5506
5507 static int niu_reset_rx_mac(struct niu *np)
5508 {
5509 if (np->flags & NIU_FLAGS_XMAC)
5510 return niu_reset_rx_xmac(np);
5511 else
5512 return niu_reset_rx_bmac(np);
5513 }
5514
5515 static void niu_init_rx_xmac(struct niu *np)
5516 {
5517 struct niu_parent *parent = np->parent;
5518 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5519 int first_rdc_table = tp->first_table_num;
5520 unsigned long i;
5521 u64 val;
5522
5523 nw64_mac(XMAC_ADD_FILT0, 0);
5524 nw64_mac(XMAC_ADD_FILT1, 0);
5525 nw64_mac(XMAC_ADD_FILT2, 0);
5526 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5527 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5528 for (i = 0; i < MAC_NUM_HASH; i++)
5529 nw64_mac(XMAC_HASH_TBL(i), 0);
5530 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5531 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5532 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5533
5534 val = nr64_mac(XMAC_CONFIG);
5535 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5536 XMAC_CONFIG_PROMISCUOUS |
5537 XMAC_CONFIG_PROMISC_GROUP |
5538 XMAC_CONFIG_ERR_CHK_DIS |
5539 XMAC_CONFIG_RX_CRC_CHK_DIS |
5540 XMAC_CONFIG_RESERVED_MULTICAST |
5541 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5542 XMAC_CONFIG_ADDR_FILTER_EN |
5543 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5544 XMAC_CONFIG_STRIP_CRC |
5545 XMAC_CONFIG_PASS_FLOW_CTRL |
5546 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5547 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5548 nw64_mac(XMAC_CONFIG, val);
5549
5550 nw64_mac(RXMAC_BT_CNT, 0);
5551 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5552 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5553 nw64_mac(RXMAC_FRAG_CNT, 0);
5554 nw64_mac(RXMAC_HIST_CNT1, 0);
5555 nw64_mac(RXMAC_HIST_CNT2, 0);
5556 nw64_mac(RXMAC_HIST_CNT3, 0);
5557 nw64_mac(RXMAC_HIST_CNT4, 0);
5558 nw64_mac(RXMAC_HIST_CNT5, 0);
5559 nw64_mac(RXMAC_HIST_CNT6, 0);
5560 nw64_mac(RXMAC_HIST_CNT7, 0);
5561 nw64_mac(RXMAC_MPSZER_CNT, 0);
5562 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5563 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5564 nw64_mac(LINK_FAULT_CNT, 0);
5565 }
5566
5567 static void niu_init_rx_bmac(struct niu *np)
5568 {
5569 struct niu_parent *parent = np->parent;
5570 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5571 int first_rdc_table = tp->first_table_num;
5572 unsigned long i;
5573 u64 val;
5574
5575 nw64_mac(BMAC_ADD_FILT0, 0);
5576 nw64_mac(BMAC_ADD_FILT1, 0);
5577 nw64_mac(BMAC_ADD_FILT2, 0);
5578 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5579 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5580 for (i = 0; i < MAC_NUM_HASH; i++)
5581 nw64_mac(BMAC_HASH_TBL(i), 0);
5582 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5583 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5584 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5585
5586 val = nr64_mac(BRXMAC_CONFIG);
5587 val &= ~(BRXMAC_CONFIG_ENABLE |
5588 BRXMAC_CONFIG_STRIP_PAD |
5589 BRXMAC_CONFIG_STRIP_FCS |
5590 BRXMAC_CONFIG_PROMISC |
5591 BRXMAC_CONFIG_PROMISC_GRP |
5592 BRXMAC_CONFIG_ADDR_FILT_EN |
5593 BRXMAC_CONFIG_DISCARD_DIS);
5594 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5595 nw64_mac(BRXMAC_CONFIG, val);
5596
5597 val = nr64_mac(BMAC_ADDR_CMPEN);
5598 val |= BMAC_ADDR_CMPEN_EN0;
5599 nw64_mac(BMAC_ADDR_CMPEN, val);
5600 }
5601
5602 static void niu_init_rx_mac(struct niu *np)
5603 {
5604 niu_set_primary_mac(np, np->dev->dev_addr);
5605
5606 if (np->flags & NIU_FLAGS_XMAC)
5607 niu_init_rx_xmac(np);
5608 else
5609 niu_init_rx_bmac(np);
5610 }
5611
5612 static void niu_enable_tx_xmac(struct niu *np, int on)
5613 {
5614 u64 val = nr64_mac(XMAC_CONFIG);
5615
5616 if (on)
5617 val |= XMAC_CONFIG_TX_ENABLE;
5618 else
5619 val &= ~XMAC_CONFIG_TX_ENABLE;
5620 nw64_mac(XMAC_CONFIG, val);
5621 }
5622
5623 static void niu_enable_tx_bmac(struct niu *np, int on)
5624 {
5625 u64 val = nr64_mac(BTXMAC_CONFIG);
5626
5627 if (on)
5628 val |= BTXMAC_CONFIG_ENABLE;
5629 else
5630 val &= ~BTXMAC_CONFIG_ENABLE;
5631 nw64_mac(BTXMAC_CONFIG, val);
5632 }
5633
5634 static void niu_enable_tx_mac(struct niu *np, int on)
5635 {
5636 if (np->flags & NIU_FLAGS_XMAC)
5637 niu_enable_tx_xmac(np, on);
5638 else
5639 niu_enable_tx_bmac(np, on);
5640 }
5641
5642 static void niu_enable_rx_xmac(struct niu *np, int on)
5643 {
5644 u64 val = nr64_mac(XMAC_CONFIG);
5645
5646 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5647 XMAC_CONFIG_PROMISCUOUS);
5648
5649 if (np->flags & NIU_FLAGS_MCAST)
5650 val |= XMAC_CONFIG_HASH_FILTER_EN;
5651 if (np->flags & NIU_FLAGS_PROMISC)
5652 val |= XMAC_CONFIG_PROMISCUOUS;
5653
5654 if (on)
5655 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5656 else
5657 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5658 nw64_mac(XMAC_CONFIG, val);
5659 }
5660
5661 static void niu_enable_rx_bmac(struct niu *np, int on)
5662 {
5663 u64 val = nr64_mac(BRXMAC_CONFIG);
5664
5665 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5666 BRXMAC_CONFIG_PROMISC);
5667
5668 if (np->flags & NIU_FLAGS_MCAST)
5669 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5670 if (np->flags & NIU_FLAGS_PROMISC)
5671 val |= BRXMAC_CONFIG_PROMISC;
5672
5673 if (on)
5674 val |= BRXMAC_CONFIG_ENABLE;
5675 else
5676 val &= ~BRXMAC_CONFIG_ENABLE;
5677 nw64_mac(BRXMAC_CONFIG, val);
5678 }
5679
5680 static void niu_enable_rx_mac(struct niu *np, int on)
5681 {
5682 if (np->flags & NIU_FLAGS_XMAC)
5683 niu_enable_rx_xmac(np, on);
5684 else
5685 niu_enable_rx_bmac(np, on);
5686 }
5687
5688 static int niu_init_mac(struct niu *np)
5689 {
5690 int err;
5691
5692 niu_init_xif(np);
5693 err = niu_init_pcs(np);
5694 if (err)
5695 return err;
5696
5697 err = niu_reset_tx_mac(np);
5698 if (err)
5699 return err;
5700 niu_init_tx_mac(np);
5701 err = niu_reset_rx_mac(np);
5702 if (err)
5703 return err;
5704 niu_init_rx_mac(np);
5705
5706 /* This looks hookey but the RX MAC reset we just did will
5707 * undo some of the state we setup in niu_init_tx_mac() so we
5708 * have to call it again. In particular, the RX MAC reset will
5709 * set the XMAC_MAX register back to it's default value.
5710 */
5711 niu_init_tx_mac(np);
5712 niu_enable_tx_mac(np, 1);
5713
5714 niu_enable_rx_mac(np, 1);
5715
5716 return 0;
5717 }
5718
5719 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5720 {
5721 (void) niu_tx_channel_stop(np, rp->tx_channel);
5722 }
5723
5724 static void niu_stop_tx_channels(struct niu *np)
5725 {
5726 int i;
5727
5728 for (i = 0; i < np->num_tx_rings; i++) {
5729 struct tx_ring_info *rp = &np->tx_rings[i];
5730
5731 niu_stop_one_tx_channel(np, rp);
5732 }
5733 }
5734
5735 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5736 {
5737 (void) niu_tx_channel_reset(np, rp->tx_channel);
5738 }
5739
5740 static void niu_reset_tx_channels(struct niu *np)
5741 {
5742 int i;
5743
5744 for (i = 0; i < np->num_tx_rings; i++) {
5745 struct tx_ring_info *rp = &np->tx_rings[i];
5746
5747 niu_reset_one_tx_channel(np, rp);
5748 }
5749 }
5750
5751 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5752 {
5753 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5754 }
5755
5756 static void niu_stop_rx_channels(struct niu *np)
5757 {
5758 int i;
5759
5760 for (i = 0; i < np->num_rx_rings; i++) {
5761 struct rx_ring_info *rp = &np->rx_rings[i];
5762
5763 niu_stop_one_rx_channel(np, rp);
5764 }
5765 }
5766
5767 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5768 {
5769 int channel = rp->rx_channel;
5770
5771 (void) niu_rx_channel_reset(np, channel);
5772 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5773 nw64(RX_DMA_CTL_STAT(channel), 0);
5774 (void) niu_enable_rx_channel(np, channel, 0);
5775 }
5776
5777 static void niu_reset_rx_channels(struct niu *np)
5778 {
5779 int i;
5780
5781 for (i = 0; i < np->num_rx_rings; i++) {
5782 struct rx_ring_info *rp = &np->rx_rings[i];
5783
5784 niu_reset_one_rx_channel(np, rp);
5785 }
5786 }
5787
5788 static void niu_disable_ipp(struct niu *np)
5789 {
5790 u64 rd, wr, val;
5791 int limit;
5792
5793 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5794 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5795 limit = 100;
5796 while (--limit >= 0 && (rd != wr)) {
5797 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5798 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5799 }
5800 if (limit < 0 &&
5801 (rd != 0 && wr != 1)) {
5802 dev_err(np->device, PFX "%s: IPP would not quiesce, "
5803 "rd_ptr[%llx] wr_ptr[%llx]\n",
5804 np->dev->name,
5805 (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
5806 (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
5807 }
5808
5809 val = nr64_ipp(IPP_CFIG);
5810 val &= ~(IPP_CFIG_IPP_ENABLE |
5811 IPP_CFIG_DFIFO_ECC_EN |
5812 IPP_CFIG_DROP_BAD_CRC |
5813 IPP_CFIG_CKSUM_EN);
5814 nw64_ipp(IPP_CFIG, val);
5815
5816 (void) niu_ipp_reset(np);
5817 }
5818
5819 static int niu_init_hw(struct niu *np)
5820 {
5821 int i, err;
5822
5823 niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
5824 niu_txc_enable_port(np, 1);
5825 niu_txc_port_dma_enable(np, 1);
5826 niu_txc_set_imask(np, 0);
5827
5828 niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
5829 for (i = 0; i < np->num_tx_rings; i++) {
5830 struct tx_ring_info *rp = &np->tx_rings[i];
5831
5832 err = niu_init_one_tx_channel(np, rp);
5833 if (err)
5834 return err;
5835 }
5836
5837 niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
5838 err = niu_init_rx_channels(np);
5839 if (err)
5840 goto out_uninit_tx_channels;
5841
5842 niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
5843 err = niu_init_classifier_hw(np);
5844 if (err)
5845 goto out_uninit_rx_channels;
5846
5847 niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
5848 err = niu_init_zcp(np);
5849 if (err)
5850 goto out_uninit_rx_channels;
5851
5852 niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
5853 err = niu_init_ipp(np);
5854 if (err)
5855 goto out_uninit_rx_channels;
5856
5857 niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
5858 err = niu_init_mac(np);
5859 if (err)
5860 goto out_uninit_ipp;
5861
5862 return 0;
5863
5864 out_uninit_ipp:
5865 niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
5866 niu_disable_ipp(np);
5867
5868 out_uninit_rx_channels:
5869 niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
5870 niu_stop_rx_channels(np);
5871 niu_reset_rx_channels(np);
5872
5873 out_uninit_tx_channels:
5874 niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
5875 niu_stop_tx_channels(np);
5876 niu_reset_tx_channels(np);
5877
5878 return err;
5879 }
5880
5881 static void niu_stop_hw(struct niu *np)
5882 {
5883 niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
5884 niu_enable_interrupts(np, 0);
5885
5886 niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
5887 niu_enable_rx_mac(np, 0);
5888
5889 niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
5890 niu_disable_ipp(np);
5891
5892 niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
5893 niu_stop_tx_channels(np);
5894
5895 niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
5896 niu_stop_rx_channels(np);
5897
5898 niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
5899 niu_reset_tx_channels(np);
5900
5901 niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
5902 niu_reset_rx_channels(np);
5903 }
5904
5905 static void niu_set_irq_name(struct niu *np)
5906 {
5907 int port = np->port;
5908 int i, j = 1;
5909
5910 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
5911
5912 if (port == 0) {
5913 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
5914 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
5915 j = 3;
5916 }
5917
5918 for (i = 0; i < np->num_ldg - j; i++) {
5919 if (i < np->num_rx_rings)
5920 sprintf(np->irq_name[i+j], "%s-rx-%d",
5921 np->dev->name, i);
5922 else if (i < np->num_tx_rings + np->num_rx_rings)
5923 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
5924 i - np->num_rx_rings);
5925 }
5926 }
5927
5928 static int niu_request_irq(struct niu *np)
5929 {
5930 int i, j, err;
5931
5932 niu_set_irq_name(np);
5933
5934 err = 0;
5935 for (i = 0; i < np->num_ldg; i++) {
5936 struct niu_ldg *lp = &np->ldg[i];
5937
5938 err = request_irq(lp->irq, niu_interrupt,
5939 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
5940 np->irq_name[i], lp);
5941 if (err)
5942 goto out_free_irqs;
5943
5944 }
5945
5946 return 0;
5947
5948 out_free_irqs:
5949 for (j = 0; j < i; j++) {
5950 struct niu_ldg *lp = &np->ldg[j];
5951
5952 free_irq(lp->irq, lp);
5953 }
5954 return err;
5955 }
5956
5957 static void niu_free_irq(struct niu *np)
5958 {
5959 int i;
5960
5961 for (i = 0; i < np->num_ldg; i++) {
5962 struct niu_ldg *lp = &np->ldg[i];
5963
5964 free_irq(lp->irq, lp);
5965 }
5966 }
5967
5968 static void niu_enable_napi(struct niu *np)
5969 {
5970 int i;
5971
5972 for (i = 0; i < np->num_ldg; i++)
5973 napi_enable(&np->ldg[i].napi);
5974 }
5975
5976 static void niu_disable_napi(struct niu *np)
5977 {
5978 int i;
5979
5980 for (i = 0; i < np->num_ldg; i++)
5981 napi_disable(&np->ldg[i].napi);
5982 }
5983
5984 static int niu_open(struct net_device *dev)
5985 {
5986 struct niu *np = netdev_priv(dev);
5987 int err;
5988
5989 netif_carrier_off(dev);
5990
5991 err = niu_alloc_channels(np);
5992 if (err)
5993 goto out_err;
5994
5995 err = niu_enable_interrupts(np, 0);
5996 if (err)
5997 goto out_free_channels;
5998
5999 err = niu_request_irq(np);
6000 if (err)
6001 goto out_free_channels;
6002
6003 niu_enable_napi(np);
6004
6005 spin_lock_irq(&np->lock);
6006
6007 err = niu_init_hw(np);
6008 if (!err) {
6009 init_timer(&np->timer);
6010 np->timer.expires = jiffies + HZ;
6011 np->timer.data = (unsigned long) np;
6012 np->timer.function = niu_timer;
6013
6014 err = niu_enable_interrupts(np, 1);
6015 if (err)
6016 niu_stop_hw(np);
6017 }
6018
6019 spin_unlock_irq(&np->lock);
6020
6021 if (err) {
6022 niu_disable_napi(np);
6023 goto out_free_irq;
6024 }
6025
6026 netif_tx_start_all_queues(dev);
6027
6028 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6029 netif_carrier_on(dev);
6030
6031 add_timer(&np->timer);
6032
6033 return 0;
6034
6035 out_free_irq:
6036 niu_free_irq(np);
6037
6038 out_free_channels:
6039 niu_free_channels(np);
6040
6041 out_err:
6042 return err;
6043 }
6044
6045 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6046 {
6047 cancel_work_sync(&np->reset_task);
6048
6049 niu_disable_napi(np);
6050 netif_tx_stop_all_queues(dev);
6051
6052 del_timer_sync(&np->timer);
6053
6054 spin_lock_irq(&np->lock);
6055
6056 niu_stop_hw(np);
6057
6058 spin_unlock_irq(&np->lock);
6059 }
6060
6061 static int niu_close(struct net_device *dev)
6062 {
6063 struct niu *np = netdev_priv(dev);
6064
6065 niu_full_shutdown(np, dev);
6066
6067 niu_free_irq(np);
6068
6069 niu_free_channels(np);
6070
6071 niu_handle_led(np, 0);
6072
6073 return 0;
6074 }
6075
6076 static void niu_sync_xmac_stats(struct niu *np)
6077 {
6078 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6079
6080 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6081 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6082
6083 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6084 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6085 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6086 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6087 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6088 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6089 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6090 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6091 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6092 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6093 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6094 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6095 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6096 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6097 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6098 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6099 }
6100
6101 static void niu_sync_bmac_stats(struct niu *np)
6102 {
6103 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6104
6105 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6106 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6107
6108 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6109 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6110 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6111 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6112 }
6113
6114 static void niu_sync_mac_stats(struct niu *np)
6115 {
6116 if (np->flags & NIU_FLAGS_XMAC)
6117 niu_sync_xmac_stats(np);
6118 else
6119 niu_sync_bmac_stats(np);
6120 }
6121
6122 static void niu_get_rx_stats(struct niu *np)
6123 {
6124 unsigned long pkts, dropped, errors, bytes;
6125 int i;
6126
6127 pkts = dropped = errors = bytes = 0;
6128 for (i = 0; i < np->num_rx_rings; i++) {
6129 struct rx_ring_info *rp = &np->rx_rings[i];
6130
6131 niu_sync_rx_discard_stats(np, rp, 0);
6132
6133 pkts += rp->rx_packets;
6134 bytes += rp->rx_bytes;
6135 dropped += rp->rx_dropped;
6136 errors += rp->rx_errors;
6137 }
6138 np->dev->stats.rx_packets = pkts;
6139 np->dev->stats.rx_bytes = bytes;
6140 np->dev->stats.rx_dropped = dropped;
6141 np->dev->stats.rx_errors = errors;
6142 }
6143
6144 static void niu_get_tx_stats(struct niu *np)
6145 {
6146 unsigned long pkts, errors, bytes;
6147 int i;
6148
6149 pkts = errors = bytes = 0;
6150 for (i = 0; i < np->num_tx_rings; i++) {
6151 struct tx_ring_info *rp = &np->tx_rings[i];
6152
6153 pkts += rp->tx_packets;
6154 bytes += rp->tx_bytes;
6155 errors += rp->tx_errors;
6156 }
6157 np->dev->stats.tx_packets = pkts;
6158 np->dev->stats.tx_bytes = bytes;
6159 np->dev->stats.tx_errors = errors;
6160 }
6161
6162 static struct net_device_stats *niu_get_stats(struct net_device *dev)
6163 {
6164 struct niu *np = netdev_priv(dev);
6165
6166 niu_get_rx_stats(np);
6167 niu_get_tx_stats(np);
6168
6169 return &dev->stats;
6170 }
6171
6172 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6173 {
6174 int i;
6175
6176 for (i = 0; i < 16; i++)
6177 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6178 }
6179
6180 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6181 {
6182 int i;
6183
6184 for (i = 0; i < 16; i++)
6185 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6186 }
6187
6188 static void niu_load_hash(struct niu *np, u16 *hash)
6189 {
6190 if (np->flags & NIU_FLAGS_XMAC)
6191 niu_load_hash_xmac(np, hash);
6192 else
6193 niu_load_hash_bmac(np, hash);
6194 }
6195
6196 static void niu_set_rx_mode(struct net_device *dev)
6197 {
6198 struct niu *np = netdev_priv(dev);
6199 int i, alt_cnt, err;
6200 struct dev_addr_list *addr;
6201 unsigned long flags;
6202 u16 hash[16] = { 0, };
6203
6204 spin_lock_irqsave(&np->lock, flags);
6205 niu_enable_rx_mac(np, 0);
6206
6207 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6208 if (dev->flags & IFF_PROMISC)
6209 np->flags |= NIU_FLAGS_PROMISC;
6210 if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
6211 np->flags |= NIU_FLAGS_MCAST;
6212
6213 alt_cnt = dev->uc_count;
6214 if (alt_cnt > niu_num_alt_addr(np)) {
6215 alt_cnt = 0;
6216 np->flags |= NIU_FLAGS_PROMISC;
6217 }
6218
6219 if (alt_cnt) {
6220 int index = 0;
6221
6222 for (addr = dev->uc_list; addr; addr = addr->next) {
6223 err = niu_set_alt_mac(np, index,
6224 addr->da_addr);
6225 if (err)
6226 printk(KERN_WARNING PFX "%s: Error %d "
6227 "adding alt mac %d\n",
6228 dev->name, err, index);
6229 err = niu_enable_alt_mac(np, index, 1);
6230 if (err)
6231 printk(KERN_WARNING PFX "%s: Error %d "
6232 "enabling alt mac %d\n",
6233 dev->name, err, index);
6234
6235 index++;
6236 }
6237 } else {
6238 int alt_start;
6239 if (np->flags & NIU_FLAGS_XMAC)
6240 alt_start = 0;
6241 else
6242 alt_start = 1;
6243 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6244 err = niu_enable_alt_mac(np, i, 0);
6245 if (err)
6246 printk(KERN_WARNING PFX "%s: Error %d "
6247 "disabling alt mac %d\n",
6248 dev->name, err, i);
6249 }
6250 }
6251 if (dev->flags & IFF_ALLMULTI) {
6252 for (i = 0; i < 16; i++)
6253 hash[i] = 0xffff;
6254 } else if (dev->mc_count > 0) {
6255 for (addr = dev->mc_list; addr; addr = addr->next) {
6256 u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
6257
6258 crc >>= 24;
6259 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6260 }
6261 }
6262
6263 if (np->flags & NIU_FLAGS_MCAST)
6264 niu_load_hash(np, hash);
6265
6266 niu_enable_rx_mac(np, 1);
6267 spin_unlock_irqrestore(&np->lock, flags);
6268 }
6269
6270 static int niu_set_mac_addr(struct net_device *dev, void *p)
6271 {
6272 struct niu *np = netdev_priv(dev);
6273 struct sockaddr *addr = p;
6274 unsigned long flags;
6275
6276 if (!is_valid_ether_addr(addr->sa_data))
6277 return -EINVAL;
6278
6279 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6280
6281 if (!netif_running(dev))
6282 return 0;
6283
6284 spin_lock_irqsave(&np->lock, flags);
6285 niu_enable_rx_mac(np, 0);
6286 niu_set_primary_mac(np, dev->dev_addr);
6287 niu_enable_rx_mac(np, 1);
6288 spin_unlock_irqrestore(&np->lock, flags);
6289
6290 return 0;
6291 }
6292
6293 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6294 {
6295 return -EOPNOTSUPP;
6296 }
6297
6298 static void niu_netif_stop(struct niu *np)
6299 {
6300 np->dev->trans_start = jiffies; /* prevent tx timeout */
6301
6302 niu_disable_napi(np);
6303
6304 netif_tx_disable(np->dev);
6305 }
6306
6307 static void niu_netif_start(struct niu *np)
6308 {
6309 /* NOTE: unconditional netif_wake_queue is only appropriate
6310 * so long as all callers are assured to have free tx slots
6311 * (such as after niu_init_hw).
6312 */
6313 netif_tx_wake_all_queues(np->dev);
6314
6315 niu_enable_napi(np);
6316
6317 niu_enable_interrupts(np, 1);
6318 }
6319
6320 static void niu_reset_buffers(struct niu *np)
6321 {
6322 int i, j, k, err;
6323
6324 if (np->rx_rings) {
6325 for (i = 0; i < np->num_rx_rings; i++) {
6326 struct rx_ring_info *rp = &np->rx_rings[i];
6327
6328 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6329 struct page *page;
6330
6331 page = rp->rxhash[j];
6332 while (page) {
6333 struct page *next =
6334 (struct page *) page->mapping;
6335 u64 base = page->index;
6336 base = base >> RBR_DESCR_ADDR_SHIFT;
6337 rp->rbr[k++] = cpu_to_le32(base);
6338 page = next;
6339 }
6340 }
6341 for (; k < MAX_RBR_RING_SIZE; k++) {
6342 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6343 if (unlikely(err))
6344 break;
6345 }
6346
6347 rp->rbr_index = rp->rbr_table_size - 1;
6348 rp->rcr_index = 0;
6349 rp->rbr_pending = 0;
6350 rp->rbr_refill_pending = 0;
6351 }
6352 }
6353 if (np->tx_rings) {
6354 for (i = 0; i < np->num_tx_rings; i++) {
6355 struct tx_ring_info *rp = &np->tx_rings[i];
6356
6357 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6358 if (rp->tx_buffs[j].skb)
6359 (void) release_tx_packet(np, rp, j);
6360 }
6361
6362 rp->pending = MAX_TX_RING_SIZE;
6363 rp->prod = 0;
6364 rp->cons = 0;
6365 rp->wrap_bit = 0;
6366 }
6367 }
6368 }
6369
6370 static void niu_reset_task(struct work_struct *work)
6371 {
6372 struct niu *np = container_of(work, struct niu, reset_task);
6373 unsigned long flags;
6374 int err;
6375
6376 spin_lock_irqsave(&np->lock, flags);
6377 if (!netif_running(np->dev)) {
6378 spin_unlock_irqrestore(&np->lock, flags);
6379 return;
6380 }
6381
6382 spin_unlock_irqrestore(&np->lock, flags);
6383
6384 del_timer_sync(&np->timer);
6385
6386 niu_netif_stop(np);
6387
6388 spin_lock_irqsave(&np->lock, flags);
6389
6390 niu_stop_hw(np);
6391
6392 spin_unlock_irqrestore(&np->lock, flags);
6393
6394 niu_reset_buffers(np);
6395
6396 spin_lock_irqsave(&np->lock, flags);
6397
6398 err = niu_init_hw(np);
6399 if (!err) {
6400 np->timer.expires = jiffies + HZ;
6401 add_timer(&np->timer);
6402 niu_netif_start(np);
6403 }
6404
6405 spin_unlock_irqrestore(&np->lock, flags);
6406 }
6407
6408 static void niu_tx_timeout(struct net_device *dev)
6409 {
6410 struct niu *np = netdev_priv(dev);
6411
6412 dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
6413 dev->name);
6414
6415 schedule_work(&np->reset_task);
6416 }
6417
6418 static void niu_set_txd(struct tx_ring_info *rp, int index,
6419 u64 mapping, u64 len, u64 mark,
6420 u64 n_frags)
6421 {
6422 __le64 *desc = &rp->descr[index];
6423
6424 *desc = cpu_to_le64(mark |
6425 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6426 (len << TX_DESC_TR_LEN_SHIFT) |
6427 (mapping & TX_DESC_SAD));
6428 }
6429
6430 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6431 u64 pad_bytes, u64 len)
6432 {
6433 u16 eth_proto, eth_proto_inner;
6434 u64 csum_bits, l3off, ihl, ret;
6435 u8 ip_proto;
6436 int ipv6;
6437
6438 eth_proto = be16_to_cpu(ehdr->h_proto);
6439 eth_proto_inner = eth_proto;
6440 if (eth_proto == ETH_P_8021Q) {
6441 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6442 __be16 val = vp->h_vlan_encapsulated_proto;
6443
6444 eth_proto_inner = be16_to_cpu(val);
6445 }
6446
6447 ipv6 = ihl = 0;
6448 switch (skb->protocol) {
6449 case __constant_htons(ETH_P_IP):
6450 ip_proto = ip_hdr(skb)->protocol;
6451 ihl = ip_hdr(skb)->ihl;
6452 break;
6453 case __constant_htons(ETH_P_IPV6):
6454 ip_proto = ipv6_hdr(skb)->nexthdr;
6455 ihl = (40 >> 2);
6456 ipv6 = 1;
6457 break;
6458 default:
6459 ip_proto = ihl = 0;
6460 break;
6461 }
6462
6463 csum_bits = TXHDR_CSUM_NONE;
6464 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6465 u64 start, stuff;
6466
6467 csum_bits = (ip_proto == IPPROTO_TCP ?
6468 TXHDR_CSUM_TCP :
6469 (ip_proto == IPPROTO_UDP ?
6470 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6471
6472 start = skb_transport_offset(skb) -
6473 (pad_bytes + sizeof(struct tx_pkt_hdr));
6474 stuff = start + skb->csum_offset;
6475
6476 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6477 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6478 }
6479
6480 l3off = skb_network_offset(skb) -
6481 (pad_bytes + sizeof(struct tx_pkt_hdr));
6482
6483 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6484 (len << TXHDR_LEN_SHIFT) |
6485 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6486 (ihl << TXHDR_IHL_SHIFT) |
6487 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6488 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6489 (ipv6 ? TXHDR_IP_VER : 0) |
6490 csum_bits);
6491
6492 return ret;
6493 }
6494
6495 static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
6496 {
6497 struct niu *np = netdev_priv(dev);
6498 unsigned long align, headroom;
6499 struct netdev_queue *txq;
6500 struct tx_ring_info *rp;
6501 struct tx_pkt_hdr *tp;
6502 unsigned int len, nfg;
6503 struct ethhdr *ehdr;
6504 int prod, i, tlen;
6505 u64 mapping, mrk;
6506
6507 i = skb_get_queue_mapping(skb);
6508 rp = &np->tx_rings[i];
6509 txq = netdev_get_tx_queue(dev, i);
6510
6511 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6512 netif_tx_stop_queue(txq);
6513 dev_err(np->device, PFX "%s: BUG! Tx ring full when "
6514 "queue awake!\n", dev->name);
6515 rp->tx_errors++;
6516 return NETDEV_TX_BUSY;
6517 }
6518
6519 if (skb->len < ETH_ZLEN) {
6520 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6521
6522 if (skb_pad(skb, pad_bytes))
6523 goto out;
6524 skb_put(skb, pad_bytes);
6525 }
6526
6527 len = sizeof(struct tx_pkt_hdr) + 15;
6528 if (skb_headroom(skb) < len) {
6529 struct sk_buff *skb_new;
6530
6531 skb_new = skb_realloc_headroom(skb, len);
6532 if (!skb_new) {
6533 rp->tx_errors++;
6534 goto out_drop;
6535 }
6536 kfree_skb(skb);
6537 skb = skb_new;
6538 } else
6539 skb_orphan(skb);
6540
6541 align = ((unsigned long) skb->data & (16 - 1));
6542 headroom = align + sizeof(struct tx_pkt_hdr);
6543
6544 ehdr = (struct ethhdr *) skb->data;
6545 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6546
6547 len = skb->len - sizeof(struct tx_pkt_hdr);
6548 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6549 tp->resv = 0;
6550
6551 len = skb_headlen(skb);
6552 mapping = np->ops->map_single(np->device, skb->data,
6553 len, DMA_TO_DEVICE);
6554
6555 prod = rp->prod;
6556
6557 rp->tx_buffs[prod].skb = skb;
6558 rp->tx_buffs[prod].mapping = mapping;
6559
6560 mrk = TX_DESC_SOP;
6561 if (++rp->mark_counter == rp->mark_freq) {
6562 rp->mark_counter = 0;
6563 mrk |= TX_DESC_MARK;
6564 rp->mark_pending++;
6565 }
6566
6567 tlen = len;
6568 nfg = skb_shinfo(skb)->nr_frags;
6569 while (tlen > 0) {
6570 tlen -= MAX_TX_DESC_LEN;
6571 nfg++;
6572 }
6573
6574 while (len > 0) {
6575 unsigned int this_len = len;
6576
6577 if (this_len > MAX_TX_DESC_LEN)
6578 this_len = MAX_TX_DESC_LEN;
6579
6580 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6581 mrk = nfg = 0;
6582
6583 prod = NEXT_TX(rp, prod);
6584 mapping += this_len;
6585 len -= this_len;
6586 }
6587
6588 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6589 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6590
6591 len = frag->size;
6592 mapping = np->ops->map_page(np->device, frag->page,
6593 frag->page_offset, len,
6594 DMA_TO_DEVICE);
6595
6596 rp->tx_buffs[prod].skb = NULL;
6597 rp->tx_buffs[prod].mapping = mapping;
6598
6599 niu_set_txd(rp, prod, mapping, len, 0, 0);
6600
6601 prod = NEXT_TX(rp, prod);
6602 }
6603
6604 if (prod < rp->prod)
6605 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6606 rp->prod = prod;
6607
6608 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6609
6610 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6611 netif_tx_stop_queue(txq);
6612 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6613 netif_tx_wake_queue(txq);
6614 }
6615
6616 dev->trans_start = jiffies;
6617
6618 out:
6619 return NETDEV_TX_OK;
6620
6621 out_drop:
6622 rp->tx_errors++;
6623 kfree_skb(skb);
6624 goto out;
6625 }
6626
6627 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6628 {
6629 struct niu *np = netdev_priv(dev);
6630 int err, orig_jumbo, new_jumbo;
6631
6632 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6633 return -EINVAL;
6634
6635 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6636 new_jumbo = (new_mtu > ETH_DATA_LEN);
6637
6638 dev->mtu = new_mtu;
6639
6640 if (!netif_running(dev) ||
6641 (orig_jumbo == new_jumbo))
6642 return 0;
6643
6644 niu_full_shutdown(np, dev);
6645
6646 niu_free_channels(np);
6647
6648 niu_enable_napi(np);
6649
6650 err = niu_alloc_channels(np);
6651 if (err)
6652 return err;
6653
6654 spin_lock_irq(&np->lock);
6655
6656 err = niu_init_hw(np);
6657 if (!err) {
6658 init_timer(&np->timer);
6659 np->timer.expires = jiffies + HZ;
6660 np->timer.data = (unsigned long) np;
6661 np->timer.function = niu_timer;
6662
6663 err = niu_enable_interrupts(np, 1);
6664 if (err)
6665 niu_stop_hw(np);
6666 }
6667
6668 spin_unlock_irq(&np->lock);
6669
6670 if (!err) {
6671 netif_tx_start_all_queues(dev);
6672 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6673 netif_carrier_on(dev);
6674
6675 add_timer(&np->timer);
6676 }
6677
6678 return err;
6679 }
6680
6681 static void niu_get_drvinfo(struct net_device *dev,
6682 struct ethtool_drvinfo *info)
6683 {
6684 struct niu *np = netdev_priv(dev);
6685 struct niu_vpd *vpd = &np->vpd;
6686
6687 strcpy(info->driver, DRV_MODULE_NAME);
6688 strcpy(info->version, DRV_MODULE_VERSION);
6689 sprintf(info->fw_version, "%d.%d",
6690 vpd->fcode_major, vpd->fcode_minor);
6691 if (np->parent->plat_type != PLAT_TYPE_NIU)
6692 strcpy(info->bus_info, pci_name(np->pdev));
6693 }
6694
6695 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6696 {
6697 struct niu *np = netdev_priv(dev);
6698 struct niu_link_config *lp;
6699
6700 lp = &np->link_config;
6701
6702 memset(cmd, 0, sizeof(*cmd));
6703 cmd->phy_address = np->phy_addr;
6704 cmd->supported = lp->supported;
6705 cmd->advertising = lp->advertising;
6706 cmd->autoneg = lp->autoneg;
6707 cmd->speed = lp->active_speed;
6708 cmd->duplex = lp->active_duplex;
6709
6710 return 0;
6711 }
6712
6713 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6714 {
6715 return -EINVAL;
6716 }
6717
6718 static u32 niu_get_msglevel(struct net_device *dev)
6719 {
6720 struct niu *np = netdev_priv(dev);
6721 return np->msg_enable;
6722 }
6723
6724 static void niu_set_msglevel(struct net_device *dev, u32 value)
6725 {
6726 struct niu *np = netdev_priv(dev);
6727 np->msg_enable = value;
6728 }
6729
6730 static int niu_get_eeprom_len(struct net_device *dev)
6731 {
6732 struct niu *np = netdev_priv(dev);
6733
6734 return np->eeprom_len;
6735 }
6736
6737 static int niu_get_eeprom(struct net_device *dev,
6738 struct ethtool_eeprom *eeprom, u8 *data)
6739 {
6740 struct niu *np = netdev_priv(dev);
6741 u32 offset, len, val;
6742
6743 offset = eeprom->offset;
6744 len = eeprom->len;
6745
6746 if (offset + len < offset)
6747 return -EINVAL;
6748 if (offset >= np->eeprom_len)
6749 return -EINVAL;
6750 if (offset + len > np->eeprom_len)
6751 len = eeprom->len = np->eeprom_len - offset;
6752
6753 if (offset & 3) {
6754 u32 b_offset, b_count;
6755
6756 b_offset = offset & 3;
6757 b_count = 4 - b_offset;
6758 if (b_count > len)
6759 b_count = len;
6760
6761 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6762 memcpy(data, ((char *)&val) + b_offset, b_count);
6763 data += b_count;
6764 len -= b_count;
6765 offset += b_count;
6766 }
6767 while (len >= 4) {
6768 val = nr64(ESPC_NCR(offset / 4));
6769 memcpy(data, &val, 4);
6770 data += 4;
6771 len -= 4;
6772 offset += 4;
6773 }
6774 if (len) {
6775 val = nr64(ESPC_NCR(offset / 4));
6776 memcpy(data, &val, len);
6777 }
6778 return 0;
6779 }
6780
6781 static int niu_ethflow_to_class(int flow_type, u64 *class)
6782 {
6783 switch (flow_type) {
6784 case TCP_V4_FLOW:
6785 *class = CLASS_CODE_TCP_IPV4;
6786 break;
6787 case UDP_V4_FLOW:
6788 *class = CLASS_CODE_UDP_IPV4;
6789 break;
6790 case AH_ESP_V4_FLOW:
6791 *class = CLASS_CODE_AH_ESP_IPV4;
6792 break;
6793 case SCTP_V4_FLOW:
6794 *class = CLASS_CODE_SCTP_IPV4;
6795 break;
6796 case TCP_V6_FLOW:
6797 *class = CLASS_CODE_TCP_IPV6;
6798 break;
6799 case UDP_V6_FLOW:
6800 *class = CLASS_CODE_UDP_IPV6;
6801 break;
6802 case AH_ESP_V6_FLOW:
6803 *class = CLASS_CODE_AH_ESP_IPV6;
6804 break;
6805 case SCTP_V6_FLOW:
6806 *class = CLASS_CODE_SCTP_IPV6;
6807 break;
6808 default:
6809 return 0;
6810 }
6811
6812 return 1;
6813 }
6814
6815 static u64 niu_flowkey_to_ethflow(u64 flow_key)
6816 {
6817 u64 ethflow = 0;
6818
6819 if (flow_key & FLOW_KEY_PORT)
6820 ethflow |= RXH_DEV_PORT;
6821 if (flow_key & FLOW_KEY_L2DA)
6822 ethflow |= RXH_L2DA;
6823 if (flow_key & FLOW_KEY_VLAN)
6824 ethflow |= RXH_VLAN;
6825 if (flow_key & FLOW_KEY_IPSA)
6826 ethflow |= RXH_IP_SRC;
6827 if (flow_key & FLOW_KEY_IPDA)
6828 ethflow |= RXH_IP_DST;
6829 if (flow_key & FLOW_KEY_PROTO)
6830 ethflow |= RXH_L3_PROTO;
6831 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
6832 ethflow |= RXH_L4_B_0_1;
6833 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
6834 ethflow |= RXH_L4_B_2_3;
6835
6836 return ethflow;
6837
6838 }
6839
6840 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
6841 {
6842 u64 key = 0;
6843
6844 if (ethflow & RXH_DEV_PORT)
6845 key |= FLOW_KEY_PORT;
6846 if (ethflow & RXH_L2DA)
6847 key |= FLOW_KEY_L2DA;
6848 if (ethflow & RXH_VLAN)
6849 key |= FLOW_KEY_VLAN;
6850 if (ethflow & RXH_IP_SRC)
6851 key |= FLOW_KEY_IPSA;
6852 if (ethflow & RXH_IP_DST)
6853 key |= FLOW_KEY_IPDA;
6854 if (ethflow & RXH_L3_PROTO)
6855 key |= FLOW_KEY_PROTO;
6856 if (ethflow & RXH_L4_B_0_1)
6857 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
6858 if (ethflow & RXH_L4_B_2_3)
6859 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
6860
6861 *flow_key = key;
6862
6863 return 1;
6864
6865 }
6866
6867 static int niu_get_hash_opts(struct net_device *dev, struct ethtool_rxnfc *cmd)
6868 {
6869 struct niu *np = netdev_priv(dev);
6870 u64 class;
6871
6872 cmd->data = 0;
6873
6874 if (!niu_ethflow_to_class(cmd->flow_type, &class))
6875 return -EINVAL;
6876
6877 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
6878 TCAM_KEY_DISC)
6879 cmd->data = RXH_DISCARD;
6880 else
6881
6882 cmd->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
6883 CLASS_CODE_USER_PROG1]);
6884 return 0;
6885 }
6886
6887 static int niu_set_hash_opts(struct net_device *dev, struct ethtool_rxnfc *cmd)
6888 {
6889 struct niu *np = netdev_priv(dev);
6890 u64 class;
6891 u64 flow_key = 0;
6892 unsigned long flags;
6893
6894 if (!niu_ethflow_to_class(cmd->flow_type, &class))
6895 return -EINVAL;
6896
6897 if (class < CLASS_CODE_USER_PROG1 ||
6898 class > CLASS_CODE_SCTP_IPV6)
6899 return -EINVAL;
6900
6901 if (cmd->data & RXH_DISCARD) {
6902 niu_lock_parent(np, flags);
6903 flow_key = np->parent->tcam_key[class -
6904 CLASS_CODE_USER_PROG1];
6905 flow_key |= TCAM_KEY_DISC;
6906 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
6907 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
6908 niu_unlock_parent(np, flags);
6909 return 0;
6910 } else {
6911 /* Discard was set before, but is not set now */
6912 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
6913 TCAM_KEY_DISC) {
6914 niu_lock_parent(np, flags);
6915 flow_key = np->parent->tcam_key[class -
6916 CLASS_CODE_USER_PROG1];
6917 flow_key &= ~TCAM_KEY_DISC;
6918 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
6919 flow_key);
6920 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
6921 flow_key;
6922 niu_unlock_parent(np, flags);
6923 }
6924 }
6925
6926 if (!niu_ethflow_to_flowkey(cmd->data, &flow_key))
6927 return -EINVAL;
6928
6929 niu_lock_parent(np, flags);
6930 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
6931 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
6932 niu_unlock_parent(np, flags);
6933
6934 return 0;
6935 }
6936
6937 static const struct {
6938 const char string[ETH_GSTRING_LEN];
6939 } niu_xmac_stat_keys[] = {
6940 { "tx_frames" },
6941 { "tx_bytes" },
6942 { "tx_fifo_errors" },
6943 { "tx_overflow_errors" },
6944 { "tx_max_pkt_size_errors" },
6945 { "tx_underflow_errors" },
6946 { "rx_local_faults" },
6947 { "rx_remote_faults" },
6948 { "rx_link_faults" },
6949 { "rx_align_errors" },
6950 { "rx_frags" },
6951 { "rx_mcasts" },
6952 { "rx_bcasts" },
6953 { "rx_hist_cnt1" },
6954 { "rx_hist_cnt2" },
6955 { "rx_hist_cnt3" },
6956 { "rx_hist_cnt4" },
6957 { "rx_hist_cnt5" },
6958 { "rx_hist_cnt6" },
6959 { "rx_hist_cnt7" },
6960 { "rx_octets" },
6961 { "rx_code_violations" },
6962 { "rx_len_errors" },
6963 { "rx_crc_errors" },
6964 { "rx_underflows" },
6965 { "rx_overflows" },
6966 { "pause_off_state" },
6967 { "pause_on_state" },
6968 { "pause_received" },
6969 };
6970
6971 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
6972
6973 static const struct {
6974 const char string[ETH_GSTRING_LEN];
6975 } niu_bmac_stat_keys[] = {
6976 { "tx_underflow_errors" },
6977 { "tx_max_pkt_size_errors" },
6978 { "tx_bytes" },
6979 { "tx_frames" },
6980 { "rx_overflows" },
6981 { "rx_frames" },
6982 { "rx_align_errors" },
6983 { "rx_crc_errors" },
6984 { "rx_len_errors" },
6985 { "pause_off_state" },
6986 { "pause_on_state" },
6987 { "pause_received" },
6988 };
6989
6990 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
6991
6992 static const struct {
6993 const char string[ETH_GSTRING_LEN];
6994 } niu_rxchan_stat_keys[] = {
6995 { "rx_channel" },
6996 { "rx_packets" },
6997 { "rx_bytes" },
6998 { "rx_dropped" },
6999 { "rx_errors" },
7000 };
7001
7002 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7003
7004 static const struct {
7005 const char string[ETH_GSTRING_LEN];
7006 } niu_txchan_stat_keys[] = {
7007 { "tx_channel" },
7008 { "tx_packets" },
7009 { "tx_bytes" },
7010 { "tx_errors" },
7011 };
7012
7013 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7014
7015 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7016 {
7017 struct niu *np = netdev_priv(dev);
7018 int i;
7019
7020 if (stringset != ETH_SS_STATS)
7021 return;
7022
7023 if (np->flags & NIU_FLAGS_XMAC) {
7024 memcpy(data, niu_xmac_stat_keys,
7025 sizeof(niu_xmac_stat_keys));
7026 data += sizeof(niu_xmac_stat_keys);
7027 } else {
7028 memcpy(data, niu_bmac_stat_keys,
7029 sizeof(niu_bmac_stat_keys));
7030 data += sizeof(niu_bmac_stat_keys);
7031 }
7032 for (i = 0; i < np->num_rx_rings; i++) {
7033 memcpy(data, niu_rxchan_stat_keys,
7034 sizeof(niu_rxchan_stat_keys));
7035 data += sizeof(niu_rxchan_stat_keys);
7036 }
7037 for (i = 0; i < np->num_tx_rings; i++) {
7038 memcpy(data, niu_txchan_stat_keys,
7039 sizeof(niu_txchan_stat_keys));
7040 data += sizeof(niu_txchan_stat_keys);
7041 }
7042 }
7043
7044 static int niu_get_stats_count(struct net_device *dev)
7045 {
7046 struct niu *np = netdev_priv(dev);
7047
7048 return ((np->flags & NIU_FLAGS_XMAC ?
7049 NUM_XMAC_STAT_KEYS :
7050 NUM_BMAC_STAT_KEYS) +
7051 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7052 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
7053 }
7054
7055 static void niu_get_ethtool_stats(struct net_device *dev,
7056 struct ethtool_stats *stats, u64 *data)
7057 {
7058 struct niu *np = netdev_priv(dev);
7059 int i;
7060
7061 niu_sync_mac_stats(np);
7062 if (np->flags & NIU_FLAGS_XMAC) {
7063 memcpy(data, &np->mac_stats.xmac,
7064 sizeof(struct niu_xmac_stats));
7065 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7066 } else {
7067 memcpy(data, &np->mac_stats.bmac,
7068 sizeof(struct niu_bmac_stats));
7069 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7070 }
7071 for (i = 0; i < np->num_rx_rings; i++) {
7072 struct rx_ring_info *rp = &np->rx_rings[i];
7073
7074 niu_sync_rx_discard_stats(np, rp, 0);
7075
7076 data[0] = rp->rx_channel;
7077 data[1] = rp->rx_packets;
7078 data[2] = rp->rx_bytes;
7079 data[3] = rp->rx_dropped;
7080 data[4] = rp->rx_errors;
7081 data += 5;
7082 }
7083 for (i = 0; i < np->num_tx_rings; i++) {
7084 struct tx_ring_info *rp = &np->tx_rings[i];
7085
7086 data[0] = rp->tx_channel;
7087 data[1] = rp->tx_packets;
7088 data[2] = rp->tx_bytes;
7089 data[3] = rp->tx_errors;
7090 data += 4;
7091 }
7092 }
7093
7094 static u64 niu_led_state_save(struct niu *np)
7095 {
7096 if (np->flags & NIU_FLAGS_XMAC)
7097 return nr64_mac(XMAC_CONFIG);
7098 else
7099 return nr64_mac(BMAC_XIF_CONFIG);
7100 }
7101
7102 static void niu_led_state_restore(struct niu *np, u64 val)
7103 {
7104 if (np->flags & NIU_FLAGS_XMAC)
7105 nw64_mac(XMAC_CONFIG, val);
7106 else
7107 nw64_mac(BMAC_XIF_CONFIG, val);
7108 }
7109
7110 static void niu_force_led(struct niu *np, int on)
7111 {
7112 u64 val, reg, bit;
7113
7114 if (np->flags & NIU_FLAGS_XMAC) {
7115 reg = XMAC_CONFIG;
7116 bit = XMAC_CONFIG_FORCE_LED_ON;
7117 } else {
7118 reg = BMAC_XIF_CONFIG;
7119 bit = BMAC_XIF_CONFIG_LINK_LED;
7120 }
7121
7122 val = nr64_mac(reg);
7123 if (on)
7124 val |= bit;
7125 else
7126 val &= ~bit;
7127 nw64_mac(reg, val);
7128 }
7129
7130 static int niu_phys_id(struct net_device *dev, u32 data)
7131 {
7132 struct niu *np = netdev_priv(dev);
7133 u64 orig_led_state;
7134 int i;
7135
7136 if (!netif_running(dev))
7137 return -EAGAIN;
7138
7139 if (data == 0)
7140 data = 2;
7141
7142 orig_led_state = niu_led_state_save(np);
7143 for (i = 0; i < (data * 2); i++) {
7144 int on = ((i % 2) == 0);
7145
7146 niu_force_led(np, on);
7147
7148 if (msleep_interruptible(500))
7149 break;
7150 }
7151 niu_led_state_restore(np, orig_led_state);
7152
7153 return 0;
7154 }
7155
7156 static const struct ethtool_ops niu_ethtool_ops = {
7157 .get_drvinfo = niu_get_drvinfo,
7158 .get_link = ethtool_op_get_link,
7159 .get_msglevel = niu_get_msglevel,
7160 .set_msglevel = niu_set_msglevel,
7161 .get_eeprom_len = niu_get_eeprom_len,
7162 .get_eeprom = niu_get_eeprom,
7163 .get_settings = niu_get_settings,
7164 .set_settings = niu_set_settings,
7165 .get_strings = niu_get_strings,
7166 .get_stats_count = niu_get_stats_count,
7167 .get_ethtool_stats = niu_get_ethtool_stats,
7168 .phys_id = niu_phys_id,
7169 .get_rxhash = niu_get_hash_opts,
7170 .set_rxhash = niu_set_hash_opts,
7171 };
7172
7173 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7174 int ldg, int ldn)
7175 {
7176 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7177 return -EINVAL;
7178 if (ldn < 0 || ldn > LDN_MAX)
7179 return -EINVAL;
7180
7181 parent->ldg_map[ldn] = ldg;
7182
7183 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7184 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7185 * the firmware, and we're not supposed to change them.
7186 * Validate the mapping, because if it's wrong we probably
7187 * won't get any interrupts and that's painful to debug.
7188 */
7189 if (nr64(LDG_NUM(ldn)) != ldg) {
7190 dev_err(np->device, PFX "Port %u, mis-matched "
7191 "LDG assignment "
7192 "for ldn %d, should be %d is %llu\n",
7193 np->port, ldn, ldg,
7194 (unsigned long long) nr64(LDG_NUM(ldn)));
7195 return -EINVAL;
7196 }
7197 } else
7198 nw64(LDG_NUM(ldn), ldg);
7199
7200 return 0;
7201 }
7202
7203 static int niu_set_ldg_timer_res(struct niu *np, int res)
7204 {
7205 if (res < 0 || res > LDG_TIMER_RES_VAL)
7206 return -EINVAL;
7207
7208
7209 nw64(LDG_TIMER_RES, res);
7210
7211 return 0;
7212 }
7213
7214 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7215 {
7216 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7217 (func < 0 || func > 3) ||
7218 (vector < 0 || vector > 0x1f))
7219 return -EINVAL;
7220
7221 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7222
7223 return 0;
7224 }
7225
7226 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7227 {
7228 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7229 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7230 int limit;
7231
7232 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7233 return -EINVAL;
7234
7235 frame = frame_base;
7236 nw64(ESPC_PIO_STAT, frame);
7237 limit = 64;
7238 do {
7239 udelay(5);
7240 frame = nr64(ESPC_PIO_STAT);
7241 if (frame & ESPC_PIO_STAT_READ_END)
7242 break;
7243 } while (limit--);
7244 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7245 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
7246 (unsigned long long) frame);
7247 return -ENODEV;
7248 }
7249
7250 frame = frame_base;
7251 nw64(ESPC_PIO_STAT, frame);
7252 limit = 64;
7253 do {
7254 udelay(5);
7255 frame = nr64(ESPC_PIO_STAT);
7256 if (frame & ESPC_PIO_STAT_READ_END)
7257 break;
7258 } while (limit--);
7259 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7260 dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
7261 (unsigned long long) frame);
7262 return -ENODEV;
7263 }
7264
7265 frame = nr64(ESPC_PIO_STAT);
7266 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
7267 }
7268
7269 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
7270 {
7271 int err = niu_pci_eeprom_read(np, off);
7272 u16 val;
7273
7274 if (err < 0)
7275 return err;
7276 val = (err << 8);
7277 err = niu_pci_eeprom_read(np, off + 1);
7278 if (err < 0)
7279 return err;
7280 val |= (err & 0xff);
7281
7282 return val;
7283 }
7284
7285 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
7286 {
7287 int err = niu_pci_eeprom_read(np, off);
7288 u16 val;
7289
7290 if (err < 0)
7291 return err;
7292
7293 val = (err & 0xff);
7294 err = niu_pci_eeprom_read(np, off + 1);
7295 if (err < 0)
7296 return err;
7297
7298 val |= (err & 0xff) << 8;
7299
7300 return val;
7301 }
7302
7303 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
7304 u32 off,
7305 char *namebuf,
7306 int namebuf_len)
7307 {
7308 int i;
7309
7310 for (i = 0; i < namebuf_len; i++) {
7311 int err = niu_pci_eeprom_read(np, off + i);
7312 if (err < 0)
7313 return err;
7314 *namebuf++ = err;
7315 if (!err)
7316 break;
7317 }
7318 if (i >= namebuf_len)
7319 return -EINVAL;
7320
7321 return i + 1;
7322 }
7323
7324 static void __devinit niu_vpd_parse_version(struct niu *np)
7325 {
7326 struct niu_vpd *vpd = &np->vpd;
7327 int len = strlen(vpd->version) + 1;
7328 const char *s = vpd->version;
7329 int i;
7330
7331 for (i = 0; i < len - 5; i++) {
7332 if (!strncmp(s + i, "FCode ", 5))
7333 break;
7334 }
7335 if (i >= len - 5)
7336 return;
7337
7338 s += i + 5;
7339 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
7340
7341 niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
7342 vpd->fcode_major, vpd->fcode_minor);
7343 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
7344 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
7345 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
7346 np->flags |= NIU_FLAGS_VPD_VALID;
7347 }
7348
7349 /* ESPC_PIO_EN_ENABLE must be set */
7350 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
7351 u32 start, u32 end)
7352 {
7353 unsigned int found_mask = 0;
7354 #define FOUND_MASK_MODEL 0x00000001
7355 #define FOUND_MASK_BMODEL 0x00000002
7356 #define FOUND_MASK_VERS 0x00000004
7357 #define FOUND_MASK_MAC 0x00000008
7358 #define FOUND_MASK_NMAC 0x00000010
7359 #define FOUND_MASK_PHY 0x00000020
7360 #define FOUND_MASK_ALL 0x0000003f
7361
7362 niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
7363 start, end);
7364 while (start < end) {
7365 int len, err, instance, type, prop_len;
7366 char namebuf[64];
7367 u8 *prop_buf;
7368 int max_len;
7369
7370 if (found_mask == FOUND_MASK_ALL) {
7371 niu_vpd_parse_version(np);
7372 return 1;
7373 }
7374
7375 err = niu_pci_eeprom_read(np, start + 2);
7376 if (err < 0)
7377 return err;
7378 len = err;
7379 start += 3;
7380
7381 instance = niu_pci_eeprom_read(np, start);
7382 type = niu_pci_eeprom_read(np, start + 3);
7383 prop_len = niu_pci_eeprom_read(np, start + 4);
7384 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
7385 if (err < 0)
7386 return err;
7387
7388 prop_buf = NULL;
7389 max_len = 0;
7390 if (!strcmp(namebuf, "model")) {
7391 prop_buf = np->vpd.model;
7392 max_len = NIU_VPD_MODEL_MAX;
7393 found_mask |= FOUND_MASK_MODEL;
7394 } else if (!strcmp(namebuf, "board-model")) {
7395 prop_buf = np->vpd.board_model;
7396 max_len = NIU_VPD_BD_MODEL_MAX;
7397 found_mask |= FOUND_MASK_BMODEL;
7398 } else if (!strcmp(namebuf, "version")) {
7399 prop_buf = np->vpd.version;
7400 max_len = NIU_VPD_VERSION_MAX;
7401 found_mask |= FOUND_MASK_VERS;
7402 } else if (!strcmp(namebuf, "local-mac-address")) {
7403 prop_buf = np->vpd.local_mac;
7404 max_len = ETH_ALEN;
7405 found_mask |= FOUND_MASK_MAC;
7406 } else if (!strcmp(namebuf, "num-mac-addresses")) {
7407 prop_buf = &np->vpd.mac_num;
7408 max_len = 1;
7409 found_mask |= FOUND_MASK_NMAC;
7410 } else if (!strcmp(namebuf, "phy-type")) {
7411 prop_buf = np->vpd.phy_type;
7412 max_len = NIU_VPD_PHY_TYPE_MAX;
7413 found_mask |= FOUND_MASK_PHY;
7414 }
7415
7416 if (max_len && prop_len > max_len) {
7417 dev_err(np->device, PFX "Property '%s' length (%d) is "
7418 "too long.\n", namebuf, prop_len);
7419 return -EINVAL;
7420 }
7421
7422 if (prop_buf) {
7423 u32 off = start + 5 + err;
7424 int i;
7425
7426 niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
7427 "len[%d]\n", namebuf, prop_len);
7428 for (i = 0; i < prop_len; i++)
7429 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
7430 }
7431
7432 start += len;
7433 }
7434
7435 return 0;
7436 }
7437
7438 /* ESPC_PIO_EN_ENABLE must be set */
7439 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
7440 {
7441 u32 offset;
7442 int err;
7443
7444 err = niu_pci_eeprom_read16_swp(np, start + 1);
7445 if (err < 0)
7446 return;
7447
7448 offset = err + 3;
7449
7450 while (start + offset < ESPC_EEPROM_SIZE) {
7451 u32 here = start + offset;
7452 u32 end;
7453
7454 err = niu_pci_eeprom_read(np, here);
7455 if (err != 0x90)
7456 return;
7457
7458 err = niu_pci_eeprom_read16_swp(np, here + 1);
7459 if (err < 0)
7460 return;
7461
7462 here = start + offset + 3;
7463 end = start + offset + err;
7464
7465 offset += err;
7466
7467 err = niu_pci_vpd_scan_props(np, here, end);
7468 if (err < 0 || err == 1)
7469 return;
7470 }
7471 }
7472
7473 /* ESPC_PIO_EN_ENABLE must be set */
7474 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
7475 {
7476 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
7477 int err;
7478
7479 while (start < end) {
7480 ret = start;
7481
7482 /* ROM header signature? */
7483 err = niu_pci_eeprom_read16(np, start + 0);
7484 if (err != 0x55aa)
7485 return 0;
7486
7487 /* Apply offset to PCI data structure. */
7488 err = niu_pci_eeprom_read16(np, start + 23);
7489 if (err < 0)
7490 return 0;
7491 start += err;
7492
7493 /* Check for "PCIR" signature. */
7494 err = niu_pci_eeprom_read16(np, start + 0);
7495 if (err != 0x5043)
7496 return 0;
7497 err = niu_pci_eeprom_read16(np, start + 2);
7498 if (err != 0x4952)
7499 return 0;
7500
7501 /* Check for OBP image type. */
7502 err = niu_pci_eeprom_read(np, start + 20);
7503 if (err < 0)
7504 return 0;
7505 if (err != 0x01) {
7506 err = niu_pci_eeprom_read(np, ret + 2);
7507 if (err < 0)
7508 return 0;
7509
7510 start = ret + (err * 512);
7511 continue;
7512 }
7513
7514 err = niu_pci_eeprom_read16_swp(np, start + 8);
7515 if (err < 0)
7516 return err;
7517 ret += err;
7518
7519 err = niu_pci_eeprom_read(np, ret + 0);
7520 if (err != 0x82)
7521 return 0;
7522
7523 return ret;
7524 }
7525
7526 return 0;
7527 }
7528
7529 static int __devinit niu_phy_type_prop_decode(struct niu *np,
7530 const char *phy_prop)
7531 {
7532 if (!strcmp(phy_prop, "mif")) {
7533 /* 1G copper, MII */
7534 np->flags &= ~(NIU_FLAGS_FIBER |
7535 NIU_FLAGS_10G);
7536 np->mac_xcvr = MAC_XCVR_MII;
7537 } else if (!strcmp(phy_prop, "xgf")) {
7538 /* 10G fiber, XPCS */
7539 np->flags |= (NIU_FLAGS_10G |
7540 NIU_FLAGS_FIBER);
7541 np->mac_xcvr = MAC_XCVR_XPCS;
7542 } else if (!strcmp(phy_prop, "pcs")) {
7543 /* 1G fiber, PCS */
7544 np->flags &= ~NIU_FLAGS_10G;
7545 np->flags |= NIU_FLAGS_FIBER;
7546 np->mac_xcvr = MAC_XCVR_PCS;
7547 } else if (!strcmp(phy_prop, "xgc")) {
7548 /* 10G copper, XPCS */
7549 np->flags |= NIU_FLAGS_10G;
7550 np->flags &= ~NIU_FLAGS_FIBER;
7551 np->mac_xcvr = MAC_XCVR_XPCS;
7552 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
7553 /* 10G Serdes or 1G Serdes, default to 10G */
7554 np->flags |= NIU_FLAGS_10G;
7555 np->flags &= ~NIU_FLAGS_FIBER;
7556 np->flags |= NIU_FLAGS_XCVR_SERDES;
7557 np->mac_xcvr = MAC_XCVR_XPCS;
7558 } else {
7559 return -EINVAL;
7560 }
7561 return 0;
7562 }
7563
7564 static int niu_pci_vpd_get_nports(struct niu *np)
7565 {
7566 int ports = 0;
7567
7568 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
7569 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
7570 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
7571 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
7572 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
7573 ports = 4;
7574 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
7575 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
7576 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
7577 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
7578 ports = 2;
7579 }
7580
7581 return ports;
7582 }
7583
7584 static void __devinit niu_pci_vpd_validate(struct niu *np)
7585 {
7586 struct net_device *dev = np->dev;
7587 struct niu_vpd *vpd = &np->vpd;
7588 u8 val8;
7589
7590 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
7591 dev_err(np->device, PFX "VPD MAC invalid, "
7592 "falling back to SPROM.\n");
7593
7594 np->flags &= ~NIU_FLAGS_VPD_VALID;
7595 return;
7596 }
7597
7598 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
7599 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
7600 np->flags |= NIU_FLAGS_10G;
7601 np->flags &= ~NIU_FLAGS_FIBER;
7602 np->flags |= NIU_FLAGS_XCVR_SERDES;
7603 np->mac_xcvr = MAC_XCVR_PCS;
7604 if (np->port > 1) {
7605 np->flags |= NIU_FLAGS_FIBER;
7606 np->flags &= ~NIU_FLAGS_10G;
7607 }
7608 if (np->flags & NIU_FLAGS_10G)
7609 np->mac_xcvr = MAC_XCVR_XPCS;
7610 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
7611 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
7612 NIU_FLAGS_HOTPLUG_PHY);
7613 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
7614 dev_err(np->device, PFX "Illegal phy string [%s].\n",
7615 np->vpd.phy_type);
7616 dev_err(np->device, PFX "Falling back to SPROM.\n");
7617 np->flags &= ~NIU_FLAGS_VPD_VALID;
7618 return;
7619 }
7620
7621 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
7622
7623 val8 = dev->perm_addr[5];
7624 dev->perm_addr[5] += np->port;
7625 if (dev->perm_addr[5] < val8)
7626 dev->perm_addr[4]++;
7627
7628 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7629 }
7630
7631 static int __devinit niu_pci_probe_sprom(struct niu *np)
7632 {
7633 struct net_device *dev = np->dev;
7634 int len, i;
7635 u64 val, sum;
7636 u8 val8;
7637
7638 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
7639 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
7640 len = val / 4;
7641
7642 np->eeprom_len = len;
7643
7644 niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
7645
7646 sum = 0;
7647 for (i = 0; i < len; i++) {
7648 val = nr64(ESPC_NCR(i));
7649 sum += (val >> 0) & 0xff;
7650 sum += (val >> 8) & 0xff;
7651 sum += (val >> 16) & 0xff;
7652 sum += (val >> 24) & 0xff;
7653 }
7654 niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
7655 if ((sum & 0xff) != 0xab) {
7656 dev_err(np->device, PFX "Bad SPROM checksum "
7657 "(%x, should be 0xab)\n", (int) (sum & 0xff));
7658 return -EINVAL;
7659 }
7660
7661 val = nr64(ESPC_PHY_TYPE);
7662 switch (np->port) {
7663 case 0:
7664 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
7665 ESPC_PHY_TYPE_PORT0_SHIFT;
7666 break;
7667 case 1:
7668 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
7669 ESPC_PHY_TYPE_PORT1_SHIFT;
7670 break;
7671 case 2:
7672 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
7673 ESPC_PHY_TYPE_PORT2_SHIFT;
7674 break;
7675 case 3:
7676 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
7677 ESPC_PHY_TYPE_PORT3_SHIFT;
7678 break;
7679 default:
7680 dev_err(np->device, PFX "Bogus port number %u\n",
7681 np->port);
7682 return -EINVAL;
7683 }
7684 niudbg(PROBE, "SPROM: PHY type %x\n", val8);
7685
7686 switch (val8) {
7687 case ESPC_PHY_TYPE_1G_COPPER:
7688 /* 1G copper, MII */
7689 np->flags &= ~(NIU_FLAGS_FIBER |
7690 NIU_FLAGS_10G);
7691 np->mac_xcvr = MAC_XCVR_MII;
7692 break;
7693
7694 case ESPC_PHY_TYPE_1G_FIBER:
7695 /* 1G fiber, PCS */
7696 np->flags &= ~NIU_FLAGS_10G;
7697 np->flags |= NIU_FLAGS_FIBER;
7698 np->mac_xcvr = MAC_XCVR_PCS;
7699 break;
7700
7701 case ESPC_PHY_TYPE_10G_COPPER:
7702 /* 10G copper, XPCS */
7703 np->flags |= NIU_FLAGS_10G;
7704 np->flags &= ~NIU_FLAGS_FIBER;
7705 np->mac_xcvr = MAC_XCVR_XPCS;
7706 break;
7707
7708 case ESPC_PHY_TYPE_10G_FIBER:
7709 /* 10G fiber, XPCS */
7710 np->flags |= (NIU_FLAGS_10G |
7711 NIU_FLAGS_FIBER);
7712 np->mac_xcvr = MAC_XCVR_XPCS;
7713 break;
7714
7715 default:
7716 dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
7717 return -EINVAL;
7718 }
7719
7720 val = nr64(ESPC_MAC_ADDR0);
7721 niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
7722 (unsigned long long) val);
7723 dev->perm_addr[0] = (val >> 0) & 0xff;
7724 dev->perm_addr[1] = (val >> 8) & 0xff;
7725 dev->perm_addr[2] = (val >> 16) & 0xff;
7726 dev->perm_addr[3] = (val >> 24) & 0xff;
7727
7728 val = nr64(ESPC_MAC_ADDR1);
7729 niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
7730 (unsigned long long) val);
7731 dev->perm_addr[4] = (val >> 0) & 0xff;
7732 dev->perm_addr[5] = (val >> 8) & 0xff;
7733
7734 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
7735 dev_err(np->device, PFX "SPROM MAC address invalid\n");
7736 dev_err(np->device, PFX "[ \n");
7737 for (i = 0; i < 6; i++)
7738 printk("%02x ", dev->perm_addr[i]);
7739 printk("]\n");
7740 return -EINVAL;
7741 }
7742
7743 val8 = dev->perm_addr[5];
7744 dev->perm_addr[5] += np->port;
7745 if (dev->perm_addr[5] < val8)
7746 dev->perm_addr[4]++;
7747
7748 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
7749
7750 val = nr64(ESPC_MOD_STR_LEN);
7751 niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
7752 (unsigned long long) val);
7753 if (val >= 8 * 4)
7754 return -EINVAL;
7755
7756 for (i = 0; i < val; i += 4) {
7757 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
7758
7759 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
7760 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
7761 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
7762 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
7763 }
7764 np->vpd.model[val] = '\0';
7765
7766 val = nr64(ESPC_BD_MOD_STR_LEN);
7767 niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
7768 (unsigned long long) val);
7769 if (val >= 4 * 4)
7770 return -EINVAL;
7771
7772 for (i = 0; i < val; i += 4) {
7773 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
7774
7775 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
7776 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
7777 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
7778 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
7779 }
7780 np->vpd.board_model[val] = '\0';
7781
7782 np->vpd.mac_num =
7783 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
7784 niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
7785 np->vpd.mac_num);
7786
7787 return 0;
7788 }
7789
7790 static int __devinit niu_get_and_validate_port(struct niu *np)
7791 {
7792 struct niu_parent *parent = np->parent;
7793
7794 if (np->port <= 1)
7795 np->flags |= NIU_FLAGS_XMAC;
7796
7797 if (!parent->num_ports) {
7798 if (parent->plat_type == PLAT_TYPE_NIU) {
7799 parent->num_ports = 2;
7800 } else {
7801 parent->num_ports = niu_pci_vpd_get_nports(np);
7802 if (!parent->num_ports) {
7803 /* Fall back to SPROM as last resort.
7804 * This will fail on most cards.
7805 */
7806 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
7807 ESPC_NUM_PORTS_MACS_VAL;
7808
7809 /* All of the current probing methods fail on
7810 * Maramba on-board parts.
7811 */
7812 if (!parent->num_ports)
7813 parent->num_ports = 4;
7814 }
7815 }
7816 }
7817
7818 niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
7819 np->port, parent->num_ports);
7820 if (np->port >= parent->num_ports)
7821 return -ENODEV;
7822
7823 return 0;
7824 }
7825
7826 static int __devinit phy_record(struct niu_parent *parent,
7827 struct phy_probe_info *p,
7828 int dev_id_1, int dev_id_2, u8 phy_port,
7829 int type)
7830 {
7831 u32 id = (dev_id_1 << 16) | dev_id_2;
7832 u8 idx;
7833
7834 if (dev_id_1 < 0 || dev_id_2 < 0)
7835 return 0;
7836 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
7837 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
7838 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
7839 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
7840 return 0;
7841 } else {
7842 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
7843 return 0;
7844 }
7845
7846 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
7847 parent->index, id,
7848 (type == PHY_TYPE_PMA_PMD ?
7849 "PMA/PMD" :
7850 (type == PHY_TYPE_PCS ?
7851 "PCS" : "MII")),
7852 phy_port);
7853
7854 if (p->cur[type] >= NIU_MAX_PORTS) {
7855 printk(KERN_ERR PFX "Too many PHY ports.\n");
7856 return -EINVAL;
7857 }
7858 idx = p->cur[type];
7859 p->phy_id[type][idx] = id;
7860 p->phy_port[type][idx] = phy_port;
7861 p->cur[type] = idx + 1;
7862 return 0;
7863 }
7864
7865 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
7866 {
7867 int i;
7868
7869 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
7870 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
7871 return 1;
7872 }
7873 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
7874 if (p->phy_port[PHY_TYPE_PCS][i] == port)
7875 return 1;
7876 }
7877
7878 return 0;
7879 }
7880
7881 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
7882 {
7883 int port, cnt;
7884
7885 cnt = 0;
7886 *lowest = 32;
7887 for (port = 8; port < 32; port++) {
7888 if (port_has_10g(p, port)) {
7889 if (!cnt)
7890 *lowest = port;
7891 cnt++;
7892 }
7893 }
7894
7895 return cnt;
7896 }
7897
7898 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
7899 {
7900 *lowest = 32;
7901 if (p->cur[PHY_TYPE_MII])
7902 *lowest = p->phy_port[PHY_TYPE_MII][0];
7903
7904 return p->cur[PHY_TYPE_MII];
7905 }
7906
7907 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
7908 {
7909 int num_ports = parent->num_ports;
7910 int i;
7911
7912 for (i = 0; i < num_ports; i++) {
7913 parent->rxchan_per_port[i] = (16 / num_ports);
7914 parent->txchan_per_port[i] = (16 / num_ports);
7915
7916 pr_info(PFX "niu%d: Port %u [%u RX chans] "
7917 "[%u TX chans]\n",
7918 parent->index, i,
7919 parent->rxchan_per_port[i],
7920 parent->txchan_per_port[i]);
7921 }
7922 }
7923
7924 static void __devinit niu_divide_channels(struct niu_parent *parent,
7925 int num_10g, int num_1g)
7926 {
7927 int num_ports = parent->num_ports;
7928 int rx_chans_per_10g, rx_chans_per_1g;
7929 int tx_chans_per_10g, tx_chans_per_1g;
7930 int i, tot_rx, tot_tx;
7931
7932 if (!num_10g || !num_1g) {
7933 rx_chans_per_10g = rx_chans_per_1g =
7934 (NIU_NUM_RXCHAN / num_ports);
7935 tx_chans_per_10g = tx_chans_per_1g =
7936 (NIU_NUM_TXCHAN / num_ports);
7937 } else {
7938 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
7939 rx_chans_per_10g = (NIU_NUM_RXCHAN -
7940 (rx_chans_per_1g * num_1g)) /
7941 num_10g;
7942
7943 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
7944 tx_chans_per_10g = (NIU_NUM_TXCHAN -
7945 (tx_chans_per_1g * num_1g)) /
7946 num_10g;
7947 }
7948
7949 tot_rx = tot_tx = 0;
7950 for (i = 0; i < num_ports; i++) {
7951 int type = phy_decode(parent->port_phy, i);
7952
7953 if (type == PORT_TYPE_10G) {
7954 parent->rxchan_per_port[i] = rx_chans_per_10g;
7955 parent->txchan_per_port[i] = tx_chans_per_10g;
7956 } else {
7957 parent->rxchan_per_port[i] = rx_chans_per_1g;
7958 parent->txchan_per_port[i] = tx_chans_per_1g;
7959 }
7960 pr_info(PFX "niu%d: Port %u [%u RX chans] "
7961 "[%u TX chans]\n",
7962 parent->index, i,
7963 parent->rxchan_per_port[i],
7964 parent->txchan_per_port[i]);
7965 tot_rx += parent->rxchan_per_port[i];
7966 tot_tx += parent->txchan_per_port[i];
7967 }
7968
7969 if (tot_rx > NIU_NUM_RXCHAN) {
7970 printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
7971 "resetting to one per port.\n",
7972 parent->index, tot_rx);
7973 for (i = 0; i < num_ports; i++)
7974 parent->rxchan_per_port[i] = 1;
7975 }
7976 if (tot_tx > NIU_NUM_TXCHAN) {
7977 printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
7978 "resetting to one per port.\n",
7979 parent->index, tot_tx);
7980 for (i = 0; i < num_ports; i++)
7981 parent->txchan_per_port[i] = 1;
7982 }
7983 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
7984 printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
7985 "RX[%d] TX[%d]\n",
7986 parent->index, tot_rx, tot_tx);
7987 }
7988 }
7989
7990 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
7991 int num_10g, int num_1g)
7992 {
7993 int i, num_ports = parent->num_ports;
7994 int rdc_group, rdc_groups_per_port;
7995 int rdc_channel_base;
7996
7997 rdc_group = 0;
7998 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
7999
8000 rdc_channel_base = 0;
8001
8002 for (i = 0; i < num_ports; i++) {
8003 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8004 int grp, num_channels = parent->rxchan_per_port[i];
8005 int this_channel_offset;
8006
8007 tp->first_table_num = rdc_group;
8008 tp->num_tables = rdc_groups_per_port;
8009 this_channel_offset = 0;
8010 for (grp = 0; grp < tp->num_tables; grp++) {
8011 struct rdc_table *rt = &tp->tables[grp];
8012 int slot;
8013
8014 pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
8015 parent->index, i, tp->first_table_num + grp);
8016 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8017 rt->rxdma_channel[slot] =
8018 rdc_channel_base + this_channel_offset;
8019
8020 printk("%d ", rt->rxdma_channel[slot]);
8021
8022 if (++this_channel_offset == num_channels)
8023 this_channel_offset = 0;
8024 }
8025 printk("]\n");
8026 }
8027
8028 parent->rdc_default[i] = rdc_channel_base;
8029
8030 rdc_channel_base += num_channels;
8031 rdc_group += rdc_groups_per_port;
8032 }
8033 }
8034
8035 static int __devinit fill_phy_probe_info(struct niu *np,
8036 struct niu_parent *parent,
8037 struct phy_probe_info *info)
8038 {
8039 unsigned long flags;
8040 int port, err;
8041
8042 memset(info, 0, sizeof(*info));
8043
8044 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8045 niu_lock_parent(np, flags);
8046 err = 0;
8047 for (port = 8; port < 32; port++) {
8048 int dev_id_1, dev_id_2;
8049
8050 dev_id_1 = mdio_read(np, port,
8051 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8052 dev_id_2 = mdio_read(np, port,
8053 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8054 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8055 PHY_TYPE_PMA_PMD);
8056 if (err)
8057 break;
8058 dev_id_1 = mdio_read(np, port,
8059 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8060 dev_id_2 = mdio_read(np, port,
8061 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8062 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8063 PHY_TYPE_PCS);
8064 if (err)
8065 break;
8066 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8067 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8068 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8069 PHY_TYPE_MII);
8070 if (err)
8071 break;
8072 }
8073 niu_unlock_parent(np, flags);
8074
8075 return err;
8076 }
8077
8078 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8079 {
8080 struct phy_probe_info *info = &parent->phy_probe_info;
8081 int lowest_10g, lowest_1g;
8082 int num_10g, num_1g;
8083 u32 val;
8084 int err;
8085
8086 num_10g = num_1g = 0;
8087
8088 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8089 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8090 num_10g = 0;
8091 num_1g = 2;
8092 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8093 parent->num_ports = 4;
8094 val = (phy_encode(PORT_TYPE_1G, 0) |
8095 phy_encode(PORT_TYPE_1G, 1) |
8096 phy_encode(PORT_TYPE_1G, 2) |
8097 phy_encode(PORT_TYPE_1G, 3));
8098 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8099 num_10g = 2;
8100 num_1g = 0;
8101 parent->num_ports = 2;
8102 val = (phy_encode(PORT_TYPE_10G, 0) |
8103 phy_encode(PORT_TYPE_10G, 1));
8104 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8105 (parent->plat_type == PLAT_TYPE_NIU)) {
8106 /* this is the Monza case */
8107 if (np->flags & NIU_FLAGS_10G) {
8108 val = (phy_encode(PORT_TYPE_10G, 0) |
8109 phy_encode(PORT_TYPE_10G, 1));
8110 } else {
8111 val = (phy_encode(PORT_TYPE_1G, 0) |
8112 phy_encode(PORT_TYPE_1G, 1));
8113 }
8114 } else {
8115 err = fill_phy_probe_info(np, parent, info);
8116 if (err)
8117 return err;
8118
8119 num_10g = count_10g_ports(info, &lowest_10g);
8120 num_1g = count_1g_ports(info, &lowest_1g);
8121
8122 switch ((num_10g << 4) | num_1g) {
8123 case 0x24:
8124 if (lowest_1g == 10)
8125 parent->plat_type = PLAT_TYPE_VF_P0;
8126 else if (lowest_1g == 26)
8127 parent->plat_type = PLAT_TYPE_VF_P1;
8128 else
8129 goto unknown_vg_1g_port;
8130
8131 /* fallthru */
8132 case 0x22:
8133 val = (phy_encode(PORT_TYPE_10G, 0) |
8134 phy_encode(PORT_TYPE_10G, 1) |
8135 phy_encode(PORT_TYPE_1G, 2) |
8136 phy_encode(PORT_TYPE_1G, 3));
8137 break;
8138
8139 case 0x20:
8140 val = (phy_encode(PORT_TYPE_10G, 0) |
8141 phy_encode(PORT_TYPE_10G, 1));
8142 break;
8143
8144 case 0x10:
8145 val = phy_encode(PORT_TYPE_10G, np->port);
8146 break;
8147
8148 case 0x14:
8149 if (lowest_1g == 10)
8150 parent->plat_type = PLAT_TYPE_VF_P0;
8151 else if (lowest_1g == 26)
8152 parent->plat_type = PLAT_TYPE_VF_P1;
8153 else
8154 goto unknown_vg_1g_port;
8155
8156 /* fallthru */
8157 case 0x13:
8158 if ((lowest_10g & 0x7) == 0)
8159 val = (phy_encode(PORT_TYPE_10G, 0) |
8160 phy_encode(PORT_TYPE_1G, 1) |
8161 phy_encode(PORT_TYPE_1G, 2) |
8162 phy_encode(PORT_TYPE_1G, 3));
8163 else
8164 val = (phy_encode(PORT_TYPE_1G, 0) |
8165 phy_encode(PORT_TYPE_10G, 1) |
8166 phy_encode(PORT_TYPE_1G, 2) |
8167 phy_encode(PORT_TYPE_1G, 3));
8168 break;
8169
8170 case 0x04:
8171 if (lowest_1g == 10)
8172 parent->plat_type = PLAT_TYPE_VF_P0;
8173 else if (lowest_1g == 26)
8174 parent->plat_type = PLAT_TYPE_VF_P1;
8175 else
8176 goto unknown_vg_1g_port;
8177
8178 val = (phy_encode(PORT_TYPE_1G, 0) |
8179 phy_encode(PORT_TYPE_1G, 1) |
8180 phy_encode(PORT_TYPE_1G, 2) |
8181 phy_encode(PORT_TYPE_1G, 3));
8182 break;
8183
8184 default:
8185 printk(KERN_ERR PFX "Unsupported port config "
8186 "10G[%d] 1G[%d]\n",
8187 num_10g, num_1g);
8188 return -EINVAL;
8189 }
8190 }
8191
8192 parent->port_phy = val;
8193
8194 if (parent->plat_type == PLAT_TYPE_NIU)
8195 niu_n2_divide_channels(parent);
8196 else
8197 niu_divide_channels(parent, num_10g, num_1g);
8198
8199 niu_divide_rdc_groups(parent, num_10g, num_1g);
8200
8201 return 0;
8202
8203 unknown_vg_1g_port:
8204 printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
8205 lowest_1g);
8206 return -EINVAL;
8207 }
8208
8209 static int __devinit niu_probe_ports(struct niu *np)
8210 {
8211 struct niu_parent *parent = np->parent;
8212 int err, i;
8213
8214 niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
8215 parent->port_phy);
8216
8217 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8218 err = walk_phys(np, parent);
8219 if (err)
8220 return err;
8221
8222 niu_set_ldg_timer_res(np, 2);
8223 for (i = 0; i <= LDN_MAX; i++)
8224 niu_ldn_irq_enable(np, i, 0);
8225 }
8226
8227 if (parent->port_phy == PORT_PHY_INVALID)
8228 return -EINVAL;
8229
8230 return 0;
8231 }
8232
8233 static int __devinit niu_classifier_swstate_init(struct niu *np)
8234 {
8235 struct niu_classifier *cp = &np->clas;
8236
8237 niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
8238 np->parent->tcam_num_entries);
8239
8240 cp->tcam_index = (u16) np->port;
8241 cp->h1_init = 0xffffffff;
8242 cp->h2_init = 0xffff;
8243
8244 return fflp_early_init(np);
8245 }
8246
8247 static void __devinit niu_link_config_init(struct niu *np)
8248 {
8249 struct niu_link_config *lp = &np->link_config;
8250
8251 lp->advertising = (ADVERTISED_10baseT_Half |
8252 ADVERTISED_10baseT_Full |
8253 ADVERTISED_100baseT_Half |
8254 ADVERTISED_100baseT_Full |
8255 ADVERTISED_1000baseT_Half |
8256 ADVERTISED_1000baseT_Full |
8257 ADVERTISED_10000baseT_Full |
8258 ADVERTISED_Autoneg);
8259 lp->speed = lp->active_speed = SPEED_INVALID;
8260 lp->duplex = lp->active_duplex = DUPLEX_INVALID;
8261 #if 0
8262 lp->loopback_mode = LOOPBACK_MAC;
8263 lp->active_speed = SPEED_10000;
8264 lp->active_duplex = DUPLEX_FULL;
8265 #else
8266 lp->loopback_mode = LOOPBACK_DISABLED;
8267 #endif
8268 }
8269
8270 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
8271 {
8272 switch (np->port) {
8273 case 0:
8274 np->mac_regs = np->regs + XMAC_PORT0_OFF;
8275 np->ipp_off = 0x00000;
8276 np->pcs_off = 0x04000;
8277 np->xpcs_off = 0x02000;
8278 break;
8279
8280 case 1:
8281 np->mac_regs = np->regs + XMAC_PORT1_OFF;
8282 np->ipp_off = 0x08000;
8283 np->pcs_off = 0x0a000;
8284 np->xpcs_off = 0x08000;
8285 break;
8286
8287 case 2:
8288 np->mac_regs = np->regs + BMAC_PORT2_OFF;
8289 np->ipp_off = 0x04000;
8290 np->pcs_off = 0x0e000;
8291 np->xpcs_off = ~0UL;
8292 break;
8293
8294 case 3:
8295 np->mac_regs = np->regs + BMAC_PORT3_OFF;
8296 np->ipp_off = 0x0c000;
8297 np->pcs_off = 0x12000;
8298 np->xpcs_off = ~0UL;
8299 break;
8300
8301 default:
8302 dev_err(np->device, PFX "Port %u is invalid, cannot "
8303 "compute MAC block offset.\n", np->port);
8304 return -EINVAL;
8305 }
8306
8307 return 0;
8308 }
8309
8310 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
8311 {
8312 struct msix_entry msi_vec[NIU_NUM_LDG];
8313 struct niu_parent *parent = np->parent;
8314 struct pci_dev *pdev = np->pdev;
8315 int i, num_irqs, err;
8316 u8 first_ldg;
8317
8318 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
8319 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
8320 ldg_num_map[i] = first_ldg + i;
8321
8322 num_irqs = (parent->rxchan_per_port[np->port] +
8323 parent->txchan_per_port[np->port] +
8324 (np->port == 0 ? 3 : 1));
8325 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
8326
8327 retry:
8328 for (i = 0; i < num_irqs; i++) {
8329 msi_vec[i].vector = 0;
8330 msi_vec[i].entry = i;
8331 }
8332
8333 err = pci_enable_msix(pdev, msi_vec, num_irqs);
8334 if (err < 0) {
8335 np->flags &= ~NIU_FLAGS_MSIX;
8336 return;
8337 }
8338 if (err > 0) {
8339 num_irqs = err;
8340 goto retry;
8341 }
8342
8343 np->flags |= NIU_FLAGS_MSIX;
8344 for (i = 0; i < num_irqs; i++)
8345 np->ldg[i].irq = msi_vec[i].vector;
8346 np->num_ldg = num_irqs;
8347 }
8348
8349 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
8350 {
8351 #ifdef CONFIG_SPARC64
8352 struct of_device *op = np->op;
8353 const u32 *int_prop;
8354 int i;
8355
8356 int_prop = of_get_property(op->node, "interrupts", NULL);
8357 if (!int_prop)
8358 return -ENODEV;
8359
8360 for (i = 0; i < op->num_irqs; i++) {
8361 ldg_num_map[i] = int_prop[i];
8362 np->ldg[i].irq = op->irqs[i];
8363 }
8364
8365 np->num_ldg = op->num_irqs;
8366
8367 return 0;
8368 #else
8369 return -EINVAL;
8370 #endif
8371 }
8372
8373 static int __devinit niu_ldg_init(struct niu *np)
8374 {
8375 struct niu_parent *parent = np->parent;
8376 u8 ldg_num_map[NIU_NUM_LDG];
8377 int first_chan, num_chan;
8378 int i, err, ldg_rotor;
8379 u8 port;
8380
8381 np->num_ldg = 1;
8382 np->ldg[0].irq = np->dev->irq;
8383 if (parent->plat_type == PLAT_TYPE_NIU) {
8384 err = niu_n2_irq_init(np, ldg_num_map);
8385 if (err)
8386 return err;
8387 } else
8388 niu_try_msix(np, ldg_num_map);
8389
8390 port = np->port;
8391 for (i = 0; i < np->num_ldg; i++) {
8392 struct niu_ldg *lp = &np->ldg[i];
8393
8394 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
8395
8396 lp->np = np;
8397 lp->ldg_num = ldg_num_map[i];
8398 lp->timer = 2; /* XXX */
8399
8400 /* On N2 NIU the firmware has setup the SID mappings so they go
8401 * to the correct values that will route the LDG to the proper
8402 * interrupt in the NCU interrupt table.
8403 */
8404 if (np->parent->plat_type != PLAT_TYPE_NIU) {
8405 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
8406 if (err)
8407 return err;
8408 }
8409 }
8410
8411 /* We adopt the LDG assignment ordering used by the N2 NIU
8412 * 'interrupt' properties because that simplifies a lot of
8413 * things. This ordering is:
8414 *
8415 * MAC
8416 * MIF (if port zero)
8417 * SYSERR (if port zero)
8418 * RX channels
8419 * TX channels
8420 */
8421
8422 ldg_rotor = 0;
8423
8424 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
8425 LDN_MAC(port));
8426 if (err)
8427 return err;
8428
8429 ldg_rotor++;
8430 if (ldg_rotor == np->num_ldg)
8431 ldg_rotor = 0;
8432
8433 if (port == 0) {
8434 err = niu_ldg_assign_ldn(np, parent,
8435 ldg_num_map[ldg_rotor],
8436 LDN_MIF);
8437 if (err)
8438 return err;
8439
8440 ldg_rotor++;
8441 if (ldg_rotor == np->num_ldg)
8442 ldg_rotor = 0;
8443
8444 err = niu_ldg_assign_ldn(np, parent,
8445 ldg_num_map[ldg_rotor],
8446 LDN_DEVICE_ERROR);
8447 if (err)
8448 return err;
8449
8450 ldg_rotor++;
8451 if (ldg_rotor == np->num_ldg)
8452 ldg_rotor = 0;
8453
8454 }
8455
8456 first_chan = 0;
8457 for (i = 0; i < port; i++)
8458 first_chan += parent->rxchan_per_port[port];
8459 num_chan = parent->rxchan_per_port[port];
8460
8461 for (i = first_chan; i < (first_chan + num_chan); i++) {
8462 err = niu_ldg_assign_ldn(np, parent,
8463 ldg_num_map[ldg_rotor],
8464 LDN_RXDMA(i));
8465 if (err)
8466 return err;
8467 ldg_rotor++;
8468 if (ldg_rotor == np->num_ldg)
8469 ldg_rotor = 0;
8470 }
8471
8472 first_chan = 0;
8473 for (i = 0; i < port; i++)
8474 first_chan += parent->txchan_per_port[port];
8475 num_chan = parent->txchan_per_port[port];
8476 for (i = first_chan; i < (first_chan + num_chan); i++) {
8477 err = niu_ldg_assign_ldn(np, parent,
8478 ldg_num_map[ldg_rotor],
8479 LDN_TXDMA(i));
8480 if (err)
8481 return err;
8482 ldg_rotor++;
8483 if (ldg_rotor == np->num_ldg)
8484 ldg_rotor = 0;
8485 }
8486
8487 return 0;
8488 }
8489
8490 static void __devexit niu_ldg_free(struct niu *np)
8491 {
8492 if (np->flags & NIU_FLAGS_MSIX)
8493 pci_disable_msix(np->pdev);
8494 }
8495
8496 static int __devinit niu_get_of_props(struct niu *np)
8497 {
8498 #ifdef CONFIG_SPARC64
8499 struct net_device *dev = np->dev;
8500 struct device_node *dp;
8501 const char *phy_type;
8502 const u8 *mac_addr;
8503 const char *model;
8504 int prop_len;
8505
8506 if (np->parent->plat_type == PLAT_TYPE_NIU)
8507 dp = np->op->node;
8508 else
8509 dp = pci_device_to_OF_node(np->pdev);
8510
8511 phy_type = of_get_property(dp, "phy-type", &prop_len);
8512 if (!phy_type) {
8513 dev_err(np->device, PFX "%s: OF node lacks "
8514 "phy-type property\n",
8515 dp->full_name);
8516 return -EINVAL;
8517 }
8518
8519 if (!strcmp(phy_type, "none"))
8520 return -ENODEV;
8521
8522 strcpy(np->vpd.phy_type, phy_type);
8523
8524 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8525 dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
8526 dp->full_name, np->vpd.phy_type);
8527 return -EINVAL;
8528 }
8529
8530 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
8531 if (!mac_addr) {
8532 dev_err(np->device, PFX "%s: OF node lacks "
8533 "local-mac-address property\n",
8534 dp->full_name);
8535 return -EINVAL;
8536 }
8537 if (prop_len != dev->addr_len) {
8538 dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
8539 "is wrong.\n",
8540 dp->full_name, prop_len);
8541 }
8542 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
8543 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8544 int i;
8545
8546 dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
8547 dp->full_name);
8548 dev_err(np->device, PFX "%s: [ \n",
8549 dp->full_name);
8550 for (i = 0; i < 6; i++)
8551 printk("%02x ", dev->perm_addr[i]);
8552 printk("]\n");
8553 return -EINVAL;
8554 }
8555
8556 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8557
8558 model = of_get_property(dp, "model", &prop_len);
8559
8560 if (model)
8561 strcpy(np->vpd.model, model);
8562
8563 return 0;
8564 #else
8565 return -EINVAL;
8566 #endif
8567 }
8568
8569 static int __devinit niu_get_invariants(struct niu *np)
8570 {
8571 int err, have_props;
8572 u32 offset;
8573
8574 err = niu_get_of_props(np);
8575 if (err == -ENODEV)
8576 return err;
8577
8578 have_props = !err;
8579
8580 err = niu_init_mac_ipp_pcs_base(np);
8581 if (err)
8582 return err;
8583
8584 if (have_props) {
8585 err = niu_get_and_validate_port(np);
8586 if (err)
8587 return err;
8588
8589 } else {
8590 if (np->parent->plat_type == PLAT_TYPE_NIU)
8591 return -EINVAL;
8592
8593 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
8594 offset = niu_pci_vpd_offset(np);
8595 niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
8596 offset);
8597 if (offset)
8598 niu_pci_vpd_fetch(np, offset);
8599 nw64(ESPC_PIO_EN, 0);
8600
8601 if (np->flags & NIU_FLAGS_VPD_VALID) {
8602 niu_pci_vpd_validate(np);
8603 err = niu_get_and_validate_port(np);
8604 if (err)
8605 return err;
8606 }
8607
8608 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
8609 err = niu_get_and_validate_port(np);
8610 if (err)
8611 return err;
8612 err = niu_pci_probe_sprom(np);
8613 if (err)
8614 return err;
8615 }
8616 }
8617
8618 err = niu_probe_ports(np);
8619 if (err)
8620 return err;
8621
8622 niu_ldg_init(np);
8623
8624 niu_classifier_swstate_init(np);
8625 niu_link_config_init(np);
8626
8627 err = niu_determine_phy_disposition(np);
8628 if (!err)
8629 err = niu_init_link(np);
8630
8631 return err;
8632 }
8633
8634 static LIST_HEAD(niu_parent_list);
8635 static DEFINE_MUTEX(niu_parent_lock);
8636 static int niu_parent_index;
8637
8638 static ssize_t show_port_phy(struct device *dev,
8639 struct device_attribute *attr, char *buf)
8640 {
8641 struct platform_device *plat_dev = to_platform_device(dev);
8642 struct niu_parent *p = plat_dev->dev.platform_data;
8643 u32 port_phy = p->port_phy;
8644 char *orig_buf = buf;
8645 int i;
8646
8647 if (port_phy == PORT_PHY_UNKNOWN ||
8648 port_phy == PORT_PHY_INVALID)
8649 return 0;
8650
8651 for (i = 0; i < p->num_ports; i++) {
8652 const char *type_str;
8653 int type;
8654
8655 type = phy_decode(port_phy, i);
8656 if (type == PORT_TYPE_10G)
8657 type_str = "10G";
8658 else
8659 type_str = "1G";
8660 buf += sprintf(buf,
8661 (i == 0) ? "%s" : " %s",
8662 type_str);
8663 }
8664 buf += sprintf(buf, "\n");
8665 return buf - orig_buf;
8666 }
8667
8668 static ssize_t show_plat_type(struct device *dev,
8669 struct device_attribute *attr, char *buf)
8670 {
8671 struct platform_device *plat_dev = to_platform_device(dev);
8672 struct niu_parent *p = plat_dev->dev.platform_data;
8673 const char *type_str;
8674
8675 switch (p->plat_type) {
8676 case PLAT_TYPE_ATLAS:
8677 type_str = "atlas";
8678 break;
8679 case PLAT_TYPE_NIU:
8680 type_str = "niu";
8681 break;
8682 case PLAT_TYPE_VF_P0:
8683 type_str = "vf_p0";
8684 break;
8685 case PLAT_TYPE_VF_P1:
8686 type_str = "vf_p1";
8687 break;
8688 default:
8689 type_str = "unknown";
8690 break;
8691 }
8692
8693 return sprintf(buf, "%s\n", type_str);
8694 }
8695
8696 static ssize_t __show_chan_per_port(struct device *dev,
8697 struct device_attribute *attr, char *buf,
8698 int rx)
8699 {
8700 struct platform_device *plat_dev = to_platform_device(dev);
8701 struct niu_parent *p = plat_dev->dev.platform_data;
8702 char *orig_buf = buf;
8703 u8 *arr;
8704 int i;
8705
8706 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
8707
8708 for (i = 0; i < p->num_ports; i++) {
8709 buf += sprintf(buf,
8710 (i == 0) ? "%d" : " %d",
8711 arr[i]);
8712 }
8713 buf += sprintf(buf, "\n");
8714
8715 return buf - orig_buf;
8716 }
8717
8718 static ssize_t show_rxchan_per_port(struct device *dev,
8719 struct device_attribute *attr, char *buf)
8720 {
8721 return __show_chan_per_port(dev, attr, buf, 1);
8722 }
8723
8724 static ssize_t show_txchan_per_port(struct device *dev,
8725 struct device_attribute *attr, char *buf)
8726 {
8727 return __show_chan_per_port(dev, attr, buf, 1);
8728 }
8729
8730 static ssize_t show_num_ports(struct device *dev,
8731 struct device_attribute *attr, char *buf)
8732 {
8733 struct platform_device *plat_dev = to_platform_device(dev);
8734 struct niu_parent *p = plat_dev->dev.platform_data;
8735
8736 return sprintf(buf, "%d\n", p->num_ports);
8737 }
8738
8739 static struct device_attribute niu_parent_attributes[] = {
8740 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
8741 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
8742 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
8743 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
8744 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
8745 {}
8746 };
8747
8748 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
8749 union niu_parent_id *id,
8750 u8 ptype)
8751 {
8752 struct platform_device *plat_dev;
8753 struct niu_parent *p;
8754 int i;
8755
8756 niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
8757
8758 plat_dev = platform_device_register_simple("niu", niu_parent_index,
8759 NULL, 0);
8760 if (!plat_dev)
8761 return NULL;
8762
8763 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
8764 int err = device_create_file(&plat_dev->dev,
8765 &niu_parent_attributes[i]);
8766 if (err)
8767 goto fail_unregister;
8768 }
8769
8770 p = kzalloc(sizeof(*p), GFP_KERNEL);
8771 if (!p)
8772 goto fail_unregister;
8773
8774 p->index = niu_parent_index++;
8775
8776 plat_dev->dev.platform_data = p;
8777 p->plat_dev = plat_dev;
8778
8779 memcpy(&p->id, id, sizeof(*id));
8780 p->plat_type = ptype;
8781 INIT_LIST_HEAD(&p->list);
8782 atomic_set(&p->refcnt, 0);
8783 list_add(&p->list, &niu_parent_list);
8784 spin_lock_init(&p->lock);
8785
8786 p->rxdma_clock_divider = 7500;
8787
8788 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
8789 if (p->plat_type == PLAT_TYPE_NIU)
8790 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
8791
8792 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
8793 int index = i - CLASS_CODE_USER_PROG1;
8794
8795 p->tcam_key[index] = TCAM_KEY_TSEL;
8796 p->flow_key[index] = (FLOW_KEY_IPSA |
8797 FLOW_KEY_IPDA |
8798 FLOW_KEY_PROTO |
8799 (FLOW_KEY_L4_BYTE12 <<
8800 FLOW_KEY_L4_0_SHIFT) |
8801 (FLOW_KEY_L4_BYTE12 <<
8802 FLOW_KEY_L4_1_SHIFT));
8803 }
8804
8805 for (i = 0; i < LDN_MAX + 1; i++)
8806 p->ldg_map[i] = LDG_INVALID;
8807
8808 return p;
8809
8810 fail_unregister:
8811 platform_device_unregister(plat_dev);
8812 return NULL;
8813 }
8814
8815 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
8816 union niu_parent_id *id,
8817 u8 ptype)
8818 {
8819 struct niu_parent *p, *tmp;
8820 int port = np->port;
8821
8822 niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
8823 ptype, port);
8824
8825 mutex_lock(&niu_parent_lock);
8826 p = NULL;
8827 list_for_each_entry(tmp, &niu_parent_list, list) {
8828 if (!memcmp(id, &tmp->id, sizeof(*id))) {
8829 p = tmp;
8830 break;
8831 }
8832 }
8833 if (!p)
8834 p = niu_new_parent(np, id, ptype);
8835
8836 if (p) {
8837 char port_name[6];
8838 int err;
8839
8840 sprintf(port_name, "port%d", port);
8841 err = sysfs_create_link(&p->plat_dev->dev.kobj,
8842 &np->device->kobj,
8843 port_name);
8844 if (!err) {
8845 p->ports[port] = np;
8846 atomic_inc(&p->refcnt);
8847 }
8848 }
8849 mutex_unlock(&niu_parent_lock);
8850
8851 return p;
8852 }
8853
8854 static void niu_put_parent(struct niu *np)
8855 {
8856 struct niu_parent *p = np->parent;
8857 u8 port = np->port;
8858 char port_name[6];
8859
8860 BUG_ON(!p || p->ports[port] != np);
8861
8862 niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
8863
8864 sprintf(port_name, "port%d", port);
8865
8866 mutex_lock(&niu_parent_lock);
8867
8868 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
8869
8870 p->ports[port] = NULL;
8871 np->parent = NULL;
8872
8873 if (atomic_dec_and_test(&p->refcnt)) {
8874 list_del(&p->list);
8875 platform_device_unregister(p->plat_dev);
8876 }
8877
8878 mutex_unlock(&niu_parent_lock);
8879 }
8880
8881 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
8882 u64 *handle, gfp_t flag)
8883 {
8884 dma_addr_t dh;
8885 void *ret;
8886
8887 ret = dma_alloc_coherent(dev, size, &dh, flag);
8888 if (ret)
8889 *handle = dh;
8890 return ret;
8891 }
8892
8893 static void niu_pci_free_coherent(struct device *dev, size_t size,
8894 void *cpu_addr, u64 handle)
8895 {
8896 dma_free_coherent(dev, size, cpu_addr, handle);
8897 }
8898
8899 static u64 niu_pci_map_page(struct device *dev, struct page *page,
8900 unsigned long offset, size_t size,
8901 enum dma_data_direction direction)
8902 {
8903 return dma_map_page(dev, page, offset, size, direction);
8904 }
8905
8906 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
8907 size_t size, enum dma_data_direction direction)
8908 {
8909 dma_unmap_page(dev, dma_address, size, direction);
8910 }
8911
8912 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
8913 size_t size,
8914 enum dma_data_direction direction)
8915 {
8916 return dma_map_single(dev, cpu_addr, size, direction);
8917 }
8918
8919 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
8920 size_t size,
8921 enum dma_data_direction direction)
8922 {
8923 dma_unmap_single(dev, dma_address, size, direction);
8924 }
8925
8926 static const struct niu_ops niu_pci_ops = {
8927 .alloc_coherent = niu_pci_alloc_coherent,
8928 .free_coherent = niu_pci_free_coherent,
8929 .map_page = niu_pci_map_page,
8930 .unmap_page = niu_pci_unmap_page,
8931 .map_single = niu_pci_map_single,
8932 .unmap_single = niu_pci_unmap_single,
8933 };
8934
8935 static void __devinit niu_driver_version(void)
8936 {
8937 static int niu_version_printed;
8938
8939 if (niu_version_printed++ == 0)
8940 pr_info("%s", version);
8941 }
8942
8943 static struct net_device * __devinit niu_alloc_and_init(
8944 struct device *gen_dev, struct pci_dev *pdev,
8945 struct of_device *op, const struct niu_ops *ops,
8946 u8 port)
8947 {
8948 struct net_device *dev;
8949 struct niu *np;
8950
8951 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
8952 if (!dev) {
8953 dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
8954 return NULL;
8955 }
8956
8957 SET_NETDEV_DEV(dev, gen_dev);
8958
8959 np = netdev_priv(dev);
8960 np->dev = dev;
8961 np->pdev = pdev;
8962 np->op = op;
8963 np->device = gen_dev;
8964 np->ops = ops;
8965
8966 np->msg_enable = niu_debug;
8967
8968 spin_lock_init(&np->lock);
8969 INIT_WORK(&np->reset_task, niu_reset_task);
8970
8971 np->port = port;
8972
8973 return dev;
8974 }
8975
8976 static const struct net_device_ops niu_netdev_ops = {
8977 .ndo_open = niu_open,
8978 .ndo_stop = niu_close,
8979 .ndo_start_xmit = niu_start_xmit,
8980 .ndo_get_stats = niu_get_stats,
8981 .ndo_set_multicast_list = niu_set_rx_mode,
8982 .ndo_validate_addr = eth_validate_addr,
8983 .ndo_set_mac_address = niu_set_mac_addr,
8984 .ndo_do_ioctl = niu_ioctl,
8985 .ndo_tx_timeout = niu_tx_timeout,
8986 .ndo_change_mtu = niu_change_mtu,
8987 };
8988
8989 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
8990 {
8991 dev->netdev_ops = &niu_netdev_ops;
8992 dev->ethtool_ops = &niu_ethtool_ops;
8993 dev->watchdog_timeo = NIU_TX_TIMEOUT;
8994 }
8995
8996 static void __devinit niu_device_announce(struct niu *np)
8997 {
8998 struct net_device *dev = np->dev;
8999
9000 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9001
9002 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9003 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9004 dev->name,
9005 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9006 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9007 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9008 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9009 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9010 np->vpd.phy_type);
9011 } else {
9012 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9013 dev->name,
9014 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9015 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9016 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9017 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9018 "COPPER")),
9019 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9020 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9021 np->vpd.phy_type);
9022 }
9023 }
9024
9025 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9026 const struct pci_device_id *ent)
9027 {
9028 union niu_parent_id parent_id;
9029 struct net_device *dev;
9030 struct niu *np;
9031 int err, pos;
9032 u64 dma_mask;
9033 u16 val16;
9034
9035 niu_driver_version();
9036
9037 err = pci_enable_device(pdev);
9038 if (err) {
9039 dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
9040 "aborting.\n");
9041 return err;
9042 }
9043
9044 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9045 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9046 dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
9047 "base addresses, aborting.\n");
9048 err = -ENODEV;
9049 goto err_out_disable_pdev;
9050 }
9051
9052 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9053 if (err) {
9054 dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
9055 "aborting.\n");
9056 goto err_out_disable_pdev;
9057 }
9058
9059 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
9060 if (pos <= 0) {
9061 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
9062 "aborting.\n");
9063 goto err_out_free_res;
9064 }
9065
9066 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9067 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9068 if (!dev) {
9069 err = -ENOMEM;
9070 goto err_out_free_res;
9071 }
9072 np = netdev_priv(dev);
9073
9074 memset(&parent_id, 0, sizeof(parent_id));
9075 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9076 parent_id.pci.bus = pdev->bus->number;
9077 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9078
9079 np->parent = niu_get_parent(np, &parent_id,
9080 PLAT_TYPE_ATLAS);
9081 if (!np->parent) {
9082 err = -ENOMEM;
9083 goto err_out_free_dev;
9084 }
9085
9086 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9087 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9088 val16 |= (PCI_EXP_DEVCTL_CERE |
9089 PCI_EXP_DEVCTL_NFERE |
9090 PCI_EXP_DEVCTL_FERE |
9091 PCI_EXP_DEVCTL_URRE |
9092 PCI_EXP_DEVCTL_RELAX_EN);
9093 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9094
9095 dma_mask = DMA_44BIT_MASK;
9096 err = pci_set_dma_mask(pdev, dma_mask);
9097 if (!err) {
9098 dev->features |= NETIF_F_HIGHDMA;
9099 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9100 if (err) {
9101 dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
9102 "DMA for consistent allocations, "
9103 "aborting.\n");
9104 goto err_out_release_parent;
9105 }
9106 }
9107 if (err || dma_mask == DMA_32BIT_MASK) {
9108 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9109 if (err) {
9110 dev_err(&pdev->dev, PFX "No usable DMA configuration, "
9111 "aborting.\n");
9112 goto err_out_release_parent;
9113 }
9114 }
9115
9116 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
9117
9118 np->regs = pci_ioremap_bar(pdev, 0);
9119 if (!np->regs) {
9120 dev_err(&pdev->dev, PFX "Cannot map device registers, "
9121 "aborting.\n");
9122 err = -ENOMEM;
9123 goto err_out_release_parent;
9124 }
9125
9126 pci_set_master(pdev);
9127 pci_save_state(pdev);
9128
9129 dev->irq = pdev->irq;
9130
9131 niu_assign_netdev_ops(dev);
9132
9133 err = niu_get_invariants(np);
9134 if (err) {
9135 if (err != -ENODEV)
9136 dev_err(&pdev->dev, PFX "Problem fetching invariants "
9137 "of chip, aborting.\n");
9138 goto err_out_iounmap;
9139 }
9140
9141 err = register_netdev(dev);
9142 if (err) {
9143 dev_err(&pdev->dev, PFX "Cannot register net device, "
9144 "aborting.\n");
9145 goto err_out_iounmap;
9146 }
9147
9148 pci_set_drvdata(pdev, dev);
9149
9150 niu_device_announce(np);
9151
9152 return 0;
9153
9154 err_out_iounmap:
9155 if (np->regs) {
9156 iounmap(np->regs);
9157 np->regs = NULL;
9158 }
9159
9160 err_out_release_parent:
9161 niu_put_parent(np);
9162
9163 err_out_free_dev:
9164 free_netdev(dev);
9165
9166 err_out_free_res:
9167 pci_release_regions(pdev);
9168
9169 err_out_disable_pdev:
9170 pci_disable_device(pdev);
9171 pci_set_drvdata(pdev, NULL);
9172
9173 return err;
9174 }
9175
9176 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9177 {
9178 struct net_device *dev = pci_get_drvdata(pdev);
9179
9180 if (dev) {
9181 struct niu *np = netdev_priv(dev);
9182
9183 unregister_netdev(dev);
9184 if (np->regs) {
9185 iounmap(np->regs);
9186 np->regs = NULL;
9187 }
9188
9189 niu_ldg_free(np);
9190
9191 niu_put_parent(np);
9192
9193 free_netdev(dev);
9194 pci_release_regions(pdev);
9195 pci_disable_device(pdev);
9196 pci_set_drvdata(pdev, NULL);
9197 }
9198 }
9199
9200 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9201 {
9202 struct net_device *dev = pci_get_drvdata(pdev);
9203 struct niu *np = netdev_priv(dev);
9204 unsigned long flags;
9205
9206 if (!netif_running(dev))
9207 return 0;
9208
9209 flush_scheduled_work();
9210 niu_netif_stop(np);
9211
9212 del_timer_sync(&np->timer);
9213
9214 spin_lock_irqsave(&np->lock, flags);
9215 niu_enable_interrupts(np, 0);
9216 spin_unlock_irqrestore(&np->lock, flags);
9217
9218 netif_device_detach(dev);
9219
9220 spin_lock_irqsave(&np->lock, flags);
9221 niu_stop_hw(np);
9222 spin_unlock_irqrestore(&np->lock, flags);
9223
9224 pci_save_state(pdev);
9225
9226 return 0;
9227 }
9228
9229 static int niu_resume(struct pci_dev *pdev)
9230 {
9231 struct net_device *dev = pci_get_drvdata(pdev);
9232 struct niu *np = netdev_priv(dev);
9233 unsigned long flags;
9234 int err;
9235
9236 if (!netif_running(dev))
9237 return 0;
9238
9239 pci_restore_state(pdev);
9240
9241 netif_device_attach(dev);
9242
9243 spin_lock_irqsave(&np->lock, flags);
9244
9245 err = niu_init_hw(np);
9246 if (!err) {
9247 np->timer.expires = jiffies + HZ;
9248 add_timer(&np->timer);
9249 niu_netif_start(np);
9250 }
9251
9252 spin_unlock_irqrestore(&np->lock, flags);
9253
9254 return err;
9255 }
9256
9257 static struct pci_driver niu_pci_driver = {
9258 .name = DRV_MODULE_NAME,
9259 .id_table = niu_pci_tbl,
9260 .probe = niu_pci_init_one,
9261 .remove = __devexit_p(niu_pci_remove_one),
9262 .suspend = niu_suspend,
9263 .resume = niu_resume,
9264 };
9265
9266 #ifdef CONFIG_SPARC64
9267 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9268 u64 *dma_addr, gfp_t flag)
9269 {
9270 unsigned long order = get_order(size);
9271 unsigned long page = __get_free_pages(flag, order);
9272
9273 if (page == 0UL)
9274 return NULL;
9275 memset((char *)page, 0, PAGE_SIZE << order);
9276 *dma_addr = __pa(page);
9277
9278 return (void *) page;
9279 }
9280
9281 static void niu_phys_free_coherent(struct device *dev, size_t size,
9282 void *cpu_addr, u64 handle)
9283 {
9284 unsigned long order = get_order(size);
9285
9286 free_pages((unsigned long) cpu_addr, order);
9287 }
9288
9289 static u64 niu_phys_map_page(struct device *dev, struct page *page,
9290 unsigned long offset, size_t size,
9291 enum dma_data_direction direction)
9292 {
9293 return page_to_phys(page) + offset;
9294 }
9295
9296 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
9297 size_t size, enum dma_data_direction direction)
9298 {
9299 /* Nothing to do. */
9300 }
9301
9302 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
9303 size_t size,
9304 enum dma_data_direction direction)
9305 {
9306 return __pa(cpu_addr);
9307 }
9308
9309 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
9310 size_t size,
9311 enum dma_data_direction direction)
9312 {
9313 /* Nothing to do. */
9314 }
9315
9316 static const struct niu_ops niu_phys_ops = {
9317 .alloc_coherent = niu_phys_alloc_coherent,
9318 .free_coherent = niu_phys_free_coherent,
9319 .map_page = niu_phys_map_page,
9320 .unmap_page = niu_phys_unmap_page,
9321 .map_single = niu_phys_map_single,
9322 .unmap_single = niu_phys_unmap_single,
9323 };
9324
9325 static unsigned long res_size(struct resource *r)
9326 {
9327 return r->end - r->start + 1UL;
9328 }
9329
9330 static int __devinit niu_of_probe(struct of_device *op,
9331 const struct of_device_id *match)
9332 {
9333 union niu_parent_id parent_id;
9334 struct net_device *dev;
9335 struct niu *np;
9336 const u32 *reg;
9337 int err;
9338
9339 niu_driver_version();
9340
9341 reg = of_get_property(op->node, "reg", NULL);
9342 if (!reg) {
9343 dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
9344 op->node->full_name);
9345 return -ENODEV;
9346 }
9347
9348 dev = niu_alloc_and_init(&op->dev, NULL, op,
9349 &niu_phys_ops, reg[0] & 0x1);
9350 if (!dev) {
9351 err = -ENOMEM;
9352 goto err_out;
9353 }
9354 np = netdev_priv(dev);
9355
9356 memset(&parent_id, 0, sizeof(parent_id));
9357 parent_id.of = of_get_parent(op->node);
9358
9359 np->parent = niu_get_parent(np, &parent_id,
9360 PLAT_TYPE_NIU);
9361 if (!np->parent) {
9362 err = -ENOMEM;
9363 goto err_out_free_dev;
9364 }
9365
9366 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
9367
9368 np->regs = of_ioremap(&op->resource[1], 0,
9369 res_size(&op->resource[1]),
9370 "niu regs");
9371 if (!np->regs) {
9372 dev_err(&op->dev, PFX "Cannot map device registers, "
9373 "aborting.\n");
9374 err = -ENOMEM;
9375 goto err_out_release_parent;
9376 }
9377
9378 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
9379 res_size(&op->resource[2]),
9380 "niu vregs-1");
9381 if (!np->vir_regs_1) {
9382 dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
9383 "aborting.\n");
9384 err = -ENOMEM;
9385 goto err_out_iounmap;
9386 }
9387
9388 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
9389 res_size(&op->resource[3]),
9390 "niu vregs-2");
9391 if (!np->vir_regs_2) {
9392 dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
9393 "aborting.\n");
9394 err = -ENOMEM;
9395 goto err_out_iounmap;
9396 }
9397
9398 niu_assign_netdev_ops(dev);
9399
9400 err = niu_get_invariants(np);
9401 if (err) {
9402 if (err != -ENODEV)
9403 dev_err(&op->dev, PFX "Problem fetching invariants "
9404 "of chip, aborting.\n");
9405 goto err_out_iounmap;
9406 }
9407
9408 err = register_netdev(dev);
9409 if (err) {
9410 dev_err(&op->dev, PFX "Cannot register net device, "
9411 "aborting.\n");
9412 goto err_out_iounmap;
9413 }
9414
9415 dev_set_drvdata(&op->dev, dev);
9416
9417 niu_device_announce(np);
9418
9419 return 0;
9420
9421 err_out_iounmap:
9422 if (np->vir_regs_1) {
9423 of_iounmap(&op->resource[2], np->vir_regs_1,
9424 res_size(&op->resource[2]));
9425 np->vir_regs_1 = NULL;
9426 }
9427
9428 if (np->vir_regs_2) {
9429 of_iounmap(&op->resource[3], np->vir_regs_2,
9430 res_size(&op->resource[3]));
9431 np->vir_regs_2 = NULL;
9432 }
9433
9434 if (np->regs) {
9435 of_iounmap(&op->resource[1], np->regs,
9436 res_size(&op->resource[1]));
9437 np->regs = NULL;
9438 }
9439
9440 err_out_release_parent:
9441 niu_put_parent(np);
9442
9443 err_out_free_dev:
9444 free_netdev(dev);
9445
9446 err_out:
9447 return err;
9448 }
9449
9450 static int __devexit niu_of_remove(struct of_device *op)
9451 {
9452 struct net_device *dev = dev_get_drvdata(&op->dev);
9453
9454 if (dev) {
9455 struct niu *np = netdev_priv(dev);
9456
9457 unregister_netdev(dev);
9458
9459 if (np->vir_regs_1) {
9460 of_iounmap(&op->resource[2], np->vir_regs_1,
9461 res_size(&op->resource[2]));
9462 np->vir_regs_1 = NULL;
9463 }
9464
9465 if (np->vir_regs_2) {
9466 of_iounmap(&op->resource[3], np->vir_regs_2,
9467 res_size(&op->resource[3]));
9468 np->vir_regs_2 = NULL;
9469 }
9470
9471 if (np->regs) {
9472 of_iounmap(&op->resource[1], np->regs,
9473 res_size(&op->resource[1]));
9474 np->regs = NULL;
9475 }
9476
9477 niu_ldg_free(np);
9478
9479 niu_put_parent(np);
9480
9481 free_netdev(dev);
9482 dev_set_drvdata(&op->dev, NULL);
9483 }
9484 return 0;
9485 }
9486
9487 static const struct of_device_id niu_match[] = {
9488 {
9489 .name = "network",
9490 .compatible = "SUNW,niusl",
9491 },
9492 {},
9493 };
9494 MODULE_DEVICE_TABLE(of, niu_match);
9495
9496 static struct of_platform_driver niu_of_driver = {
9497 .name = "niu",
9498 .match_table = niu_match,
9499 .probe = niu_of_probe,
9500 .remove = __devexit_p(niu_of_remove),
9501 };
9502
9503 #endif /* CONFIG_SPARC64 */
9504
9505 static int __init niu_init(void)
9506 {
9507 int err = 0;
9508
9509 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
9510
9511 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
9512
9513 #ifdef CONFIG_SPARC64
9514 err = of_register_driver(&niu_of_driver, &of_bus_type);
9515 #endif
9516
9517 if (!err) {
9518 err = pci_register_driver(&niu_pci_driver);
9519 #ifdef CONFIG_SPARC64
9520 if (err)
9521 of_unregister_driver(&niu_of_driver);
9522 #endif
9523 }
9524
9525 return err;
9526 }
9527
9528 static void __exit niu_exit(void)
9529 {
9530 pci_unregister_driver(&niu_pci_driver);
9531 #ifdef CONFIG_SPARC64
9532 of_unregister_driver(&niu_of_driver);
9533 #endif
9534 }
9535
9536 module_init(niu_init);
9537 module_exit(niu_exit);
Support for the Chinese Samsung S3C2440 based development boards