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pvrusb2: reduce stack usage pvr2_eeprom_analyze()
[linux/fpc-iii.git] / drivers / net / ethernet / sun / niu.c
bloba2371aa14a49f840702b5867f5ad80f6b520ee16
1 /* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8 #include <linux/module.h>
9 #include <linux/init.h>
10 #include <linux/interrupt.h>
11 #include <linux/pci.h>
12 #include <linux/dma-mapping.h>
13 #include <linux/netdevice.h>
14 #include <linux/ethtool.h>
15 #include <linux/etherdevice.h>
16 #include <linux/platform_device.h>
17 #include <linux/delay.h>
18 #include <linux/bitops.h>
19 #include <linux/mii.h>
20 #include <linux/if.h>
21 #include <linux/if_ether.h>
22 #include <linux/if_vlan.h>
23 #include <linux/ip.h>
24 #include <linux/in.h>
25 #include <linux/ipv6.h>
26 #include <linux/log2.h>
27 #include <linux/jiffies.h>
28 #include <linux/crc32.h>
29 #include <linux/list.h>
30 #include <linux/slab.h>
31
32 #include <linux/io.h>
33 #include <linux/of_device.h>
34
35 #include "niu.h"
36
37 #define DRV_MODULE_NAME "niu"
38 #define DRV_MODULE_VERSION "1.1"
39 #define DRV_MODULE_RELDATE "Apr 22, 2010"
40
41 static char version[] =
42 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
43
44 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
45 MODULE_DESCRIPTION("NIU ethernet driver");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION(DRV_MODULE_VERSION);
48
49 #ifndef readq
50 static u64 readq(void __iomem *reg)
51 {
52 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
53 }
54
55 static void writeq(u64 val, void __iomem *reg)
56 {
57 writel(val & 0xffffffff, reg);
58 writel(val >> 32, reg + 0x4UL);
59 }
60 #endif
61
62 static const struct pci_device_id niu_pci_tbl[] = {
63 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
64 {}
65 };
66
67 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
68
69 #define NIU_TX_TIMEOUT (5 * HZ)
70
71 #define nr64(reg) readq(np->regs + (reg))
72 #define nw64(reg, val) writeq((val), np->regs + (reg))
73
74 #define nr64_mac(reg) readq(np->mac_regs + (reg))
75 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
76
77 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
78 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
79
80 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
81 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
82
83 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
84 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
85
86 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
87
88 static int niu_debug;
89 static int debug = -1;
90 module_param(debug, int, 0);
91 MODULE_PARM_DESC(debug, "NIU debug level");
92
93 #define niu_lock_parent(np, flags) \
94 spin_lock_irqsave(&np->parent->lock, flags)
95 #define niu_unlock_parent(np, flags) \
96 spin_unlock_irqrestore(&np->parent->lock, flags)
97
98 static int serdes_init_10g_serdes(struct niu *np);
99
100 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
101 u64 bits, int limit, int delay)
102 {
103 while (--limit >= 0) {
104 u64 val = nr64_mac(reg);
105
106 if (!(val & bits))
107 break;
108 udelay(delay);
109 }
110 if (limit < 0)
111 return -ENODEV;
112 return 0;
113 }
114
115 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
116 u64 bits, int limit, int delay,
117 const char *reg_name)
118 {
119 int err;
120
121 nw64_mac(reg, bits);
122 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
123 if (err)
124 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
125 (unsigned long long)bits, reg_name,
126 (unsigned long long)nr64_mac(reg));
127 return err;
128 }
129
130 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
131 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
132 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
133 })
134
135 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
136 u64 bits, int limit, int delay)
137 {
138 while (--limit >= 0) {
139 u64 val = nr64_ipp(reg);
140
141 if (!(val & bits))
142 break;
143 udelay(delay);
144 }
145 if (limit < 0)
146 return -ENODEV;
147 return 0;
148 }
149
150 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
151 u64 bits, int limit, int delay,
152 const char *reg_name)
153 {
154 int err;
155 u64 val;
156
157 val = nr64_ipp(reg);
158 val |= bits;
159 nw64_ipp(reg, val);
160
161 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
162 if (err)
163 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
164 (unsigned long long)bits, reg_name,
165 (unsigned long long)nr64_ipp(reg));
166 return err;
167 }
168
169 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
170 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
171 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
172 })
173
174 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
175 u64 bits, int limit, int delay)
176 {
177 while (--limit >= 0) {
178 u64 val = nr64(reg);
179
180 if (!(val & bits))
181 break;
182 udelay(delay);
183 }
184 if (limit < 0)
185 return -ENODEV;
186 return 0;
187 }
188
189 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
190 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
191 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
192 })
193
194 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
195 u64 bits, int limit, int delay,
196 const char *reg_name)
197 {
198 int err;
199
200 nw64(reg, bits);
201 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
202 if (err)
203 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
204 (unsigned long long)bits, reg_name,
205 (unsigned long long)nr64(reg));
206 return err;
207 }
208
209 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
210 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
211 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
212 })
213
214 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
215 {
216 u64 val = (u64) lp->timer;
217
218 if (on)
219 val |= LDG_IMGMT_ARM;
220
221 nw64(LDG_IMGMT(lp->ldg_num), val);
222 }
223
224 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
225 {
226 unsigned long mask_reg, bits;
227 u64 val;
228
229 if (ldn < 0 || ldn > LDN_MAX)
230 return -EINVAL;
231
232 if (ldn < 64) {
233 mask_reg = LD_IM0(ldn);
234 bits = LD_IM0_MASK;
235 } else {
236 mask_reg = LD_IM1(ldn - 64);
237 bits = LD_IM1_MASK;
238 }
239
240 val = nr64(mask_reg);
241 if (on)
242 val &= ~bits;
243 else
244 val |= bits;
245 nw64(mask_reg, val);
246
247 return 0;
248 }
249
250 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
251 {
252 struct niu_parent *parent = np->parent;
253 int i;
254
255 for (i = 0; i <= LDN_MAX; i++) {
256 int err;
257
258 if (parent->ldg_map[i] != lp->ldg_num)
259 continue;
260
261 err = niu_ldn_irq_enable(np, i, on);
262 if (err)
263 return err;
264 }
265 return 0;
266 }
267
268 static int niu_enable_interrupts(struct niu *np, int on)
269 {
270 int i;
271
272 for (i = 0; i < np->num_ldg; i++) {
273 struct niu_ldg *lp = &np->ldg[i];
274 int err;
275
276 err = niu_enable_ldn_in_ldg(np, lp, on);
277 if (err)
278 return err;
279 }
280 for (i = 0; i < np->num_ldg; i++)
281 niu_ldg_rearm(np, &np->ldg[i], on);
282
283 return 0;
284 }
285
286 static u32 phy_encode(u32 type, int port)
287 {
288 return type << (port * 2);
289 }
290
291 static u32 phy_decode(u32 val, int port)
292 {
293 return (val >> (port * 2)) & PORT_TYPE_MASK;
294 }
295
296 static int mdio_wait(struct niu *np)
297 {
298 int limit = 1000;
299 u64 val;
300
301 while (--limit > 0) {
302 val = nr64(MIF_FRAME_OUTPUT);
303 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
304 return val & MIF_FRAME_OUTPUT_DATA;
305
306 udelay(10);
307 }
308
309 return -ENODEV;
310 }
311
312 static int mdio_read(struct niu *np, int port, int dev, int reg)
313 {
314 int err;
315
316 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
317 err = mdio_wait(np);
318 if (err < 0)
319 return err;
320
321 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
322 return mdio_wait(np);
323 }
324
325 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
326 {
327 int err;
328
329 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
330 err = mdio_wait(np);
331 if (err < 0)
332 return err;
333
334 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
335 err = mdio_wait(np);
336 if (err < 0)
337 return err;
338
339 return 0;
340 }
341
342 static int mii_read(struct niu *np, int port, int reg)
343 {
344 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
345 return mdio_wait(np);
346 }
347
348 static int mii_write(struct niu *np, int port, int reg, int data)
349 {
350 int err;
351
352 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
353 err = mdio_wait(np);
354 if (err < 0)
355 return err;
356
357 return 0;
358 }
359
360 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
361 {
362 int err;
363
364 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
365 ESR2_TI_PLL_TX_CFG_L(channel),
366 val & 0xffff);
367 if (!err)
368 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
369 ESR2_TI_PLL_TX_CFG_H(channel),
370 val >> 16);
371 return err;
372 }
373
374 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
375 {
376 int err;
377
378 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
379 ESR2_TI_PLL_RX_CFG_L(channel),
380 val & 0xffff);
381 if (!err)
382 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
383 ESR2_TI_PLL_RX_CFG_H(channel),
384 val >> 16);
385 return err;
386 }
387
388 /* Mode is always 10G fiber. */
389 static int serdes_init_niu_10g_fiber(struct niu *np)
390 {
391 struct niu_link_config *lp = &np->link_config;
392 u32 tx_cfg, rx_cfg;
393 unsigned long i;
394
395 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
396 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
397 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
398 PLL_RX_CFG_EQ_LP_ADAPTIVE);
399
400 if (lp->loopback_mode == LOOPBACK_PHY) {
401 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
402
403 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
404 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
405
406 tx_cfg |= PLL_TX_CFG_ENTEST;
407 rx_cfg |= PLL_RX_CFG_ENTEST;
408 }
409
410 /* Initialize all 4 lanes of the SERDES. */
411 for (i = 0; i < 4; i++) {
412 int err = esr2_set_tx_cfg(np, i, tx_cfg);
413 if (err)
414 return err;
415 }
416
417 for (i = 0; i < 4; i++) {
418 int err = esr2_set_rx_cfg(np, i, rx_cfg);
419 if (err)
420 return err;
421 }
422
423 return 0;
424 }
425
426 static int serdes_init_niu_1g_serdes(struct niu *np)
427 {
428 struct niu_link_config *lp = &np->link_config;
429 u16 pll_cfg, pll_sts;
430 int max_retry = 100;
431 u64 uninitialized_var(sig), mask, val;
432 u32 tx_cfg, rx_cfg;
433 unsigned long i;
434 int err;
435
436 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
437 PLL_TX_CFG_RATE_HALF);
438 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
439 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
440 PLL_RX_CFG_RATE_HALF);
441
442 if (np->port == 0)
443 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
444
445 if (lp->loopback_mode == LOOPBACK_PHY) {
446 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
447
448 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
449 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
450
451 tx_cfg |= PLL_TX_CFG_ENTEST;
452 rx_cfg |= PLL_RX_CFG_ENTEST;
453 }
454
455 /* Initialize PLL for 1G */
456 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
457
458 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
459 ESR2_TI_PLL_CFG_L, pll_cfg);
460 if (err) {
461 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
462 np->port, __func__);
463 return err;
464 }
465
466 pll_sts = PLL_CFG_ENPLL;
467
468 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
469 ESR2_TI_PLL_STS_L, pll_sts);
470 if (err) {
471 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
472 np->port, __func__);
473 return err;
474 }
475
476 udelay(200);
477
478 /* Initialize all 4 lanes of the SERDES. */
479 for (i = 0; i < 4; i++) {
480 err = esr2_set_tx_cfg(np, i, tx_cfg);
481 if (err)
482 return err;
483 }
484
485 for (i = 0; i < 4; i++) {
486 err = esr2_set_rx_cfg(np, i, rx_cfg);
487 if (err)
488 return err;
489 }
490
491 switch (np->port) {
492 case 0:
493 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
494 mask = val;
495 break;
496
497 case 1:
498 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
499 mask = val;
500 break;
501
502 default:
503 return -EINVAL;
504 }
505
506 while (max_retry--) {
507 sig = nr64(ESR_INT_SIGNALS);
508 if ((sig & mask) == val)
509 break;
510
511 mdelay(500);
512 }
513
514 if ((sig & mask) != val) {
515 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
516 np->port, (int)(sig & mask), (int)val);
517 return -ENODEV;
518 }
519
520 return 0;
521 }
522
523 static int serdes_init_niu_10g_serdes(struct niu *np)
524 {
525 struct niu_link_config *lp = &np->link_config;
526 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
527 int max_retry = 100;
528 u64 uninitialized_var(sig), mask, val;
529 unsigned long i;
530 int err;
531
532 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
533 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
534 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
535 PLL_RX_CFG_EQ_LP_ADAPTIVE);
536
537 if (lp->loopback_mode == LOOPBACK_PHY) {
538 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
539
540 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
541 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
542
543 tx_cfg |= PLL_TX_CFG_ENTEST;
544 rx_cfg |= PLL_RX_CFG_ENTEST;
545 }
546
547 /* Initialize PLL for 10G */
548 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
549
550 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
551 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
552 if (err) {
553 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
554 np->port, __func__);
555 return err;
556 }
557
558 pll_sts = PLL_CFG_ENPLL;
559
560 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
561 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
562 if (err) {
563 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
564 np->port, __func__);
565 return err;
566 }
567
568 udelay(200);
569
570 /* Initialize all 4 lanes of the SERDES. */
571 for (i = 0; i < 4; i++) {
572 err = esr2_set_tx_cfg(np, i, tx_cfg);
573 if (err)
574 return err;
575 }
576
577 for (i = 0; i < 4; i++) {
578 err = esr2_set_rx_cfg(np, i, rx_cfg);
579 if (err)
580 return err;
581 }
582
583 /* check if serdes is ready */
584
585 switch (np->port) {
586 case 0:
587 mask = ESR_INT_SIGNALS_P0_BITS;
588 val = (ESR_INT_SRDY0_P0 |
589 ESR_INT_DET0_P0 |
590 ESR_INT_XSRDY_P0 |
591 ESR_INT_XDP_P0_CH3 |
592 ESR_INT_XDP_P0_CH2 |
593 ESR_INT_XDP_P0_CH1 |
594 ESR_INT_XDP_P0_CH0);
595 break;
596
597 case 1:
598 mask = ESR_INT_SIGNALS_P1_BITS;
599 val = (ESR_INT_SRDY0_P1 |
600 ESR_INT_DET0_P1 |
601 ESR_INT_XSRDY_P1 |
602 ESR_INT_XDP_P1_CH3 |
603 ESR_INT_XDP_P1_CH2 |
604 ESR_INT_XDP_P1_CH1 |
605 ESR_INT_XDP_P1_CH0);
606 break;
607
608 default:
609 return -EINVAL;
610 }
611
612 while (max_retry--) {
613 sig = nr64(ESR_INT_SIGNALS);
614 if ((sig & mask) == val)
615 break;
616
617 mdelay(500);
618 }
619
620 if ((sig & mask) != val) {
621 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
622 np->port, (int)(sig & mask), (int)val);
623
624 /* 10G failed, try initializing at 1G */
625 err = serdes_init_niu_1g_serdes(np);
626 if (!err) {
627 np->flags &= ~NIU_FLAGS_10G;
628 np->mac_xcvr = MAC_XCVR_PCS;
629 } else {
630 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
631 np->port);
632 return -ENODEV;
633 }
634 }
635 return 0;
636 }
637
638 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
639 {
640 int err;
641
642 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
643 if (err >= 0) {
644 *val = (err & 0xffff);
645 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
646 ESR_RXTX_CTRL_H(chan));
647 if (err >= 0)
648 *val |= ((err & 0xffff) << 16);
649 err = 0;
650 }
651 return err;
652 }
653
654 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
655 {
656 int err;
657
658 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
659 ESR_GLUE_CTRL0_L(chan));
660 if (err >= 0) {
661 *val = (err & 0xffff);
662 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
663 ESR_GLUE_CTRL0_H(chan));
664 if (err >= 0) {
665 *val |= ((err & 0xffff) << 16);
666 err = 0;
667 }
668 }
669 return err;
670 }
671
672 static int esr_read_reset(struct niu *np, u32 *val)
673 {
674 int err;
675
676 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
677 ESR_RXTX_RESET_CTRL_L);
678 if (err >= 0) {
679 *val = (err & 0xffff);
680 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
681 ESR_RXTX_RESET_CTRL_H);
682 if (err >= 0) {
683 *val |= ((err & 0xffff) << 16);
684 err = 0;
685 }
686 }
687 return err;
688 }
689
690 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
691 {
692 int err;
693
694 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
695 ESR_RXTX_CTRL_L(chan), val & 0xffff);
696 if (!err)
697 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
698 ESR_RXTX_CTRL_H(chan), (val >> 16));
699 return err;
700 }
701
702 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
703 {
704 int err;
705
706 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
707 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
708 if (!err)
709 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
710 ESR_GLUE_CTRL0_H(chan), (val >> 16));
711 return err;
712 }
713
714 static int esr_reset(struct niu *np)
715 {
716 u32 uninitialized_var(reset);
717 int err;
718
719 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
720 ESR_RXTX_RESET_CTRL_L, 0x0000);
721 if (err)
722 return err;
723 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
724 ESR_RXTX_RESET_CTRL_H, 0xffff);
725 if (err)
726 return err;
727 udelay(200);
728
729 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
730 ESR_RXTX_RESET_CTRL_L, 0xffff);
731 if (err)
732 return err;
733 udelay(200);
734
735 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
736 ESR_RXTX_RESET_CTRL_H, 0x0000);
737 if (err)
738 return err;
739 udelay(200);
740
741 err = esr_read_reset(np, &reset);
742 if (err)
743 return err;
744 if (reset != 0) {
745 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
746 np->port, reset);
747 return -ENODEV;
748 }
749
750 return 0;
751 }
752
753 static int serdes_init_10g(struct niu *np)
754 {
755 struct niu_link_config *lp = &np->link_config;
756 unsigned long ctrl_reg, test_cfg_reg, i;
757 u64 ctrl_val, test_cfg_val, sig, mask, val;
758 int err;
759
760 switch (np->port) {
761 case 0:
762 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
763 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
764 break;
765 case 1:
766 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
767 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
768 break;
769
770 default:
771 return -EINVAL;
772 }
773 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
774 ENET_SERDES_CTRL_SDET_1 |
775 ENET_SERDES_CTRL_SDET_2 |
776 ENET_SERDES_CTRL_SDET_3 |
777 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
778 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
779 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
780 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
781 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
782 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
783 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
784 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
785 test_cfg_val = 0;
786
787 if (lp->loopback_mode == LOOPBACK_PHY) {
788 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
789 ENET_SERDES_TEST_MD_0_SHIFT) |
790 (ENET_TEST_MD_PAD_LOOPBACK <<
791 ENET_SERDES_TEST_MD_1_SHIFT) |
792 (ENET_TEST_MD_PAD_LOOPBACK <<
793 ENET_SERDES_TEST_MD_2_SHIFT) |
794 (ENET_TEST_MD_PAD_LOOPBACK <<
795 ENET_SERDES_TEST_MD_3_SHIFT));
796 }
797
798 nw64(ctrl_reg, ctrl_val);
799 nw64(test_cfg_reg, test_cfg_val);
800
801 /* Initialize all 4 lanes of the SERDES. */
802 for (i = 0; i < 4; i++) {
803 u32 rxtx_ctrl, glue0;
804
805 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
806 if (err)
807 return err;
808 err = esr_read_glue0(np, i, &glue0);
809 if (err)
810 return err;
811
812 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
813 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
814 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
815
816 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
817 ESR_GLUE_CTRL0_THCNT |
818 ESR_GLUE_CTRL0_BLTIME);
819 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
820 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
821 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
822 (BLTIME_300_CYCLES <<
823 ESR_GLUE_CTRL0_BLTIME_SHIFT));
824
825 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
826 if (err)
827 return err;
828 err = esr_write_glue0(np, i, glue0);
829 if (err)
830 return err;
831 }
832
833 err = esr_reset(np);
834 if (err)
835 return err;
836
837 sig = nr64(ESR_INT_SIGNALS);
838 switch (np->port) {
839 case 0:
840 mask = ESR_INT_SIGNALS_P0_BITS;
841 val = (ESR_INT_SRDY0_P0 |
842 ESR_INT_DET0_P0 |
843 ESR_INT_XSRDY_P0 |
844 ESR_INT_XDP_P0_CH3 |
845 ESR_INT_XDP_P0_CH2 |
846 ESR_INT_XDP_P0_CH1 |
847 ESR_INT_XDP_P0_CH0);
848 break;
849
850 case 1:
851 mask = ESR_INT_SIGNALS_P1_BITS;
852 val = (ESR_INT_SRDY0_P1 |
853 ESR_INT_DET0_P1 |
854 ESR_INT_XSRDY_P1 |
855 ESR_INT_XDP_P1_CH3 |
856 ESR_INT_XDP_P1_CH2 |
857 ESR_INT_XDP_P1_CH1 |
858 ESR_INT_XDP_P1_CH0);
859 break;
860
861 default:
862 return -EINVAL;
863 }
864
865 if ((sig & mask) != val) {
866 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
867 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
868 return 0;
869 }
870 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
871 np->port, (int)(sig & mask), (int)val);
872 return -ENODEV;
873 }
874 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
875 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
876 return 0;
877 }
878
879 static int serdes_init_1g(struct niu *np)
880 {
881 u64 val;
882
883 val = nr64(ENET_SERDES_1_PLL_CFG);
884 val &= ~ENET_SERDES_PLL_FBDIV2;
885 switch (np->port) {
886 case 0:
887 val |= ENET_SERDES_PLL_HRATE0;
888 break;
889 case 1:
890 val |= ENET_SERDES_PLL_HRATE1;
891 break;
892 case 2:
893 val |= ENET_SERDES_PLL_HRATE2;
894 break;
895 case 3:
896 val |= ENET_SERDES_PLL_HRATE3;
897 break;
898 default:
899 return -EINVAL;
900 }
901 nw64(ENET_SERDES_1_PLL_CFG, val);
902
903 return 0;
904 }
905
906 static int serdes_init_1g_serdes(struct niu *np)
907 {
908 struct niu_link_config *lp = &np->link_config;
909 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
910 u64 ctrl_val, test_cfg_val, sig, mask, val;
911 int err;
912 u64 reset_val, val_rd;
913
914 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
915 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
916 ENET_SERDES_PLL_FBDIV0;
917 switch (np->port) {
918 case 0:
919 reset_val = ENET_SERDES_RESET_0;
920 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
921 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
922 pll_cfg = ENET_SERDES_0_PLL_CFG;
923 break;
924 case 1:
925 reset_val = ENET_SERDES_RESET_1;
926 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
927 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
928 pll_cfg = ENET_SERDES_1_PLL_CFG;
929 break;
930
931 default:
932 return -EINVAL;
933 }
934 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
935 ENET_SERDES_CTRL_SDET_1 |
936 ENET_SERDES_CTRL_SDET_2 |
937 ENET_SERDES_CTRL_SDET_3 |
938 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
939 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
940 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
941 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
942 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
943 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
944 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
945 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
946 test_cfg_val = 0;
947
948 if (lp->loopback_mode == LOOPBACK_PHY) {
949 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
950 ENET_SERDES_TEST_MD_0_SHIFT) |
951 (ENET_TEST_MD_PAD_LOOPBACK <<
952 ENET_SERDES_TEST_MD_1_SHIFT) |
953 (ENET_TEST_MD_PAD_LOOPBACK <<
954 ENET_SERDES_TEST_MD_2_SHIFT) |
955 (ENET_TEST_MD_PAD_LOOPBACK <<
956 ENET_SERDES_TEST_MD_3_SHIFT));
957 }
958
959 nw64(ENET_SERDES_RESET, reset_val);
960 mdelay(20);
961 val_rd = nr64(ENET_SERDES_RESET);
962 val_rd &= ~reset_val;
963 nw64(pll_cfg, val);
964 nw64(ctrl_reg, ctrl_val);
965 nw64(test_cfg_reg, test_cfg_val);
966 nw64(ENET_SERDES_RESET, val_rd);
967 mdelay(2000);
968
969 /* Initialize all 4 lanes of the SERDES. */
970 for (i = 0; i < 4; i++) {
971 u32 rxtx_ctrl, glue0;
972
973 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
974 if (err)
975 return err;
976 err = esr_read_glue0(np, i, &glue0);
977 if (err)
978 return err;
979
980 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
981 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
982 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
983
984 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
985 ESR_GLUE_CTRL0_THCNT |
986 ESR_GLUE_CTRL0_BLTIME);
987 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
988 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
989 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
990 (BLTIME_300_CYCLES <<
991 ESR_GLUE_CTRL0_BLTIME_SHIFT));
992
993 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
994 if (err)
995 return err;
996 err = esr_write_glue0(np, i, glue0);
997 if (err)
998 return err;
999 }
1000
1001
1002 sig = nr64(ESR_INT_SIGNALS);
1003 switch (np->port) {
1004 case 0:
1005 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1006 mask = val;
1007 break;
1008
1009 case 1:
1010 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1011 mask = val;
1012 break;
1013
1014 default:
1015 return -EINVAL;
1016 }
1017
1018 if ((sig & mask) != val) {
1019 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1020 np->port, (int)(sig & mask), (int)val);
1021 return -ENODEV;
1022 }
1023
1024 return 0;
1025 }
1026
1027 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1028 {
1029 struct niu_link_config *lp = &np->link_config;
1030 int link_up;
1031 u64 val;
1032 u16 current_speed;
1033 unsigned long flags;
1034 u8 current_duplex;
1035
1036 link_up = 0;
1037 current_speed = SPEED_INVALID;
1038 current_duplex = DUPLEX_INVALID;
1039
1040 spin_lock_irqsave(&np->lock, flags);
1041
1042 val = nr64_pcs(PCS_MII_STAT);
1043
1044 if (val & PCS_MII_STAT_LINK_STATUS) {
1045 link_up = 1;
1046 current_speed = SPEED_1000;
1047 current_duplex = DUPLEX_FULL;
1048 }
1049
1050 lp->active_speed = current_speed;
1051 lp->active_duplex = current_duplex;
1052 spin_unlock_irqrestore(&np->lock, flags);
1053
1054 *link_up_p = link_up;
1055 return 0;
1056 }
1057
1058 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1059 {
1060 unsigned long flags;
1061 struct niu_link_config *lp = &np->link_config;
1062 int link_up = 0;
1063 int link_ok = 1;
1064 u64 val, val2;
1065 u16 current_speed;
1066 u8 current_duplex;
1067
1068 if (!(np->flags & NIU_FLAGS_10G))
1069 return link_status_1g_serdes(np, link_up_p);
1070
1071 current_speed = SPEED_INVALID;
1072 current_duplex = DUPLEX_INVALID;
1073 spin_lock_irqsave(&np->lock, flags);
1074
1075 val = nr64_xpcs(XPCS_STATUS(0));
1076 val2 = nr64_mac(XMAC_INTER2);
1077 if (val2 & 0x01000000)
1078 link_ok = 0;
1079
1080 if ((val & 0x1000ULL) && link_ok) {
1081 link_up = 1;
1082 current_speed = SPEED_10000;
1083 current_duplex = DUPLEX_FULL;
1084 }
1085 lp->active_speed = current_speed;
1086 lp->active_duplex = current_duplex;
1087 spin_unlock_irqrestore(&np->lock, flags);
1088 *link_up_p = link_up;
1089 return 0;
1090 }
1091
1092 static int link_status_mii(struct niu *np, int *link_up_p)
1093 {
1094 struct niu_link_config *lp = &np->link_config;
1095 int err;
1096 int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1097 int supported, advertising, active_speed, active_duplex;
1098
1099 err = mii_read(np, np->phy_addr, MII_BMCR);
1100 if (unlikely(err < 0))
1101 return err;
1102 bmcr = err;
1103
1104 err = mii_read(np, np->phy_addr, MII_BMSR);
1105 if (unlikely(err < 0))
1106 return err;
1107 bmsr = err;
1108
1109 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1110 if (unlikely(err < 0))
1111 return err;
1112 advert = err;
1113
1114 err = mii_read(np, np->phy_addr, MII_LPA);
1115 if (unlikely(err < 0))
1116 return err;
1117 lpa = err;
1118
1119 if (likely(bmsr & BMSR_ESTATEN)) {
1120 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1121 if (unlikely(err < 0))
1122 return err;
1123 estatus = err;
1124
1125 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1126 if (unlikely(err < 0))
1127 return err;
1128 ctrl1000 = err;
1129
1130 err = mii_read(np, np->phy_addr, MII_STAT1000);
1131 if (unlikely(err < 0))
1132 return err;
1133 stat1000 = err;
1134 } else
1135 estatus = ctrl1000 = stat1000 = 0;
1136
1137 supported = 0;
1138 if (bmsr & BMSR_ANEGCAPABLE)
1139 supported |= SUPPORTED_Autoneg;
1140 if (bmsr & BMSR_10HALF)
1141 supported |= SUPPORTED_10baseT_Half;
1142 if (bmsr & BMSR_10FULL)
1143 supported |= SUPPORTED_10baseT_Full;
1144 if (bmsr & BMSR_100HALF)
1145 supported |= SUPPORTED_100baseT_Half;
1146 if (bmsr & BMSR_100FULL)
1147 supported |= SUPPORTED_100baseT_Full;
1148 if (estatus & ESTATUS_1000_THALF)
1149 supported |= SUPPORTED_1000baseT_Half;
1150 if (estatus & ESTATUS_1000_TFULL)
1151 supported |= SUPPORTED_1000baseT_Full;
1152 lp->supported = supported;
1153
1154 advertising = mii_adv_to_ethtool_adv_t(advert);
1155 advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1156
1157 if (bmcr & BMCR_ANENABLE) {
1158 int neg, neg1000;
1159
1160 lp->active_autoneg = 1;
1161 advertising |= ADVERTISED_Autoneg;
1162
1163 neg = advert & lpa;
1164 neg1000 = (ctrl1000 << 2) & stat1000;
1165
1166 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1167 active_speed = SPEED_1000;
1168 else if (neg & LPA_100)
1169 active_speed = SPEED_100;
1170 else if (neg & (LPA_10HALF | LPA_10FULL))
1171 active_speed = SPEED_10;
1172 else
1173 active_speed = SPEED_INVALID;
1174
1175 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1176 active_duplex = DUPLEX_FULL;
1177 else if (active_speed != SPEED_INVALID)
1178 active_duplex = DUPLEX_HALF;
1179 else
1180 active_duplex = DUPLEX_INVALID;
1181 } else {
1182 lp->active_autoneg = 0;
1183
1184 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1185 active_speed = SPEED_1000;
1186 else if (bmcr & BMCR_SPEED100)
1187 active_speed = SPEED_100;
1188 else
1189 active_speed = SPEED_10;
1190
1191 if (bmcr & BMCR_FULLDPLX)
1192 active_duplex = DUPLEX_FULL;
1193 else
1194 active_duplex = DUPLEX_HALF;
1195 }
1196
1197 lp->active_advertising = advertising;
1198 lp->active_speed = active_speed;
1199 lp->active_duplex = active_duplex;
1200 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1201
1202 return 0;
1203 }
1204
1205 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1206 {
1207 struct niu_link_config *lp = &np->link_config;
1208 u16 current_speed, bmsr;
1209 unsigned long flags;
1210 u8 current_duplex;
1211 int err, link_up;
1212
1213 link_up = 0;
1214 current_speed = SPEED_INVALID;
1215 current_duplex = DUPLEX_INVALID;
1216
1217 spin_lock_irqsave(&np->lock, flags);
1218
1219 err = -EINVAL;
1220
1221 err = mii_read(np, np->phy_addr, MII_BMSR);
1222 if (err < 0)
1223 goto out;
1224
1225 bmsr = err;
1226 if (bmsr & BMSR_LSTATUS) {
1227 u16 adv, lpa;
1228
1229 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1230 if (err < 0)
1231 goto out;
1232 adv = err;
1233
1234 err = mii_read(np, np->phy_addr, MII_LPA);
1235 if (err < 0)
1236 goto out;
1237 lpa = err;
1238
1239 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1240 if (err < 0)
1241 goto out;
1242 link_up = 1;
1243 current_speed = SPEED_1000;
1244 current_duplex = DUPLEX_FULL;
1245
1246 }
1247 lp->active_speed = current_speed;
1248 lp->active_duplex = current_duplex;
1249 err = 0;
1250
1251 out:
1252 spin_unlock_irqrestore(&np->lock, flags);
1253
1254 *link_up_p = link_up;
1255 return err;
1256 }
1257
1258 static int link_status_1g(struct niu *np, int *link_up_p)
1259 {
1260 struct niu_link_config *lp = &np->link_config;
1261 unsigned long flags;
1262 int err;
1263
1264 spin_lock_irqsave(&np->lock, flags);
1265
1266 err = link_status_mii(np, link_up_p);
1267 lp->supported |= SUPPORTED_TP;
1268 lp->active_advertising |= ADVERTISED_TP;
1269
1270 spin_unlock_irqrestore(&np->lock, flags);
1271 return err;
1272 }
1273
1274 static int bcm8704_reset(struct niu *np)
1275 {
1276 int err, limit;
1277
1278 err = mdio_read(np, np->phy_addr,
1279 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1280 if (err < 0 || err == 0xffff)
1281 return err;
1282 err |= BMCR_RESET;
1283 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1284 MII_BMCR, err);
1285 if (err)
1286 return err;
1287
1288 limit = 1000;
1289 while (--limit >= 0) {
1290 err = mdio_read(np, np->phy_addr,
1291 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1292 if (err < 0)
1293 return err;
1294 if (!(err & BMCR_RESET))
1295 break;
1296 }
1297 if (limit < 0) {
1298 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1299 np->port, (err & 0xffff));
1300 return -ENODEV;
1301 }
1302 return 0;
1303 }
1304
1305 /* When written, certain PHY registers need to be read back twice
1306 * in order for the bits to settle properly.
1307 */
1308 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1309 {
1310 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1311 if (err < 0)
1312 return err;
1313 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1314 if (err < 0)
1315 return err;
1316 return 0;
1317 }
1318
1319 static int bcm8706_init_user_dev3(struct niu *np)
1320 {
1321 int err;
1322
1323
1324 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1325 BCM8704_USER_OPT_DIGITAL_CTRL);
1326 if (err < 0)
1327 return err;
1328 err &= ~USER_ODIG_CTRL_GPIOS;
1329 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1330 err |= USER_ODIG_CTRL_RESV2;
1331 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1332 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1333 if (err)
1334 return err;
1335
1336 mdelay(1000);
1337
1338 return 0;
1339 }
1340
1341 static int bcm8704_init_user_dev3(struct niu *np)
1342 {
1343 int err;
1344
1345 err = mdio_write(np, np->phy_addr,
1346 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1347 (USER_CONTROL_OPTXRST_LVL |
1348 USER_CONTROL_OPBIASFLT_LVL |
1349 USER_CONTROL_OBTMPFLT_LVL |
1350 USER_CONTROL_OPPRFLT_LVL |
1351 USER_CONTROL_OPTXFLT_LVL |
1352 USER_CONTROL_OPRXLOS_LVL |
1353 USER_CONTROL_OPRXFLT_LVL |
1354 USER_CONTROL_OPTXON_LVL |
1355 (0x3f << USER_CONTROL_RES1_SHIFT)));
1356 if (err)
1357 return err;
1358
1359 err = mdio_write(np, np->phy_addr,
1360 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1361 (USER_PMD_TX_CTL_XFP_CLKEN |
1362 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1363 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1364 USER_PMD_TX_CTL_TSCK_LPWREN));
1365 if (err)
1366 return err;
1367
1368 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1369 if (err)
1370 return err;
1371 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1372 if (err)
1373 return err;
1374
1375 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1376 BCM8704_USER_OPT_DIGITAL_CTRL);
1377 if (err < 0)
1378 return err;
1379 err &= ~USER_ODIG_CTRL_GPIOS;
1380 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1381 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1382 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1383 if (err)
1384 return err;
1385
1386 mdelay(1000);
1387
1388 return 0;
1389 }
1390
1391 static int mrvl88x2011_act_led(struct niu *np, int val)
1392 {
1393 int err;
1394
1395 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1396 MRVL88X2011_LED_8_TO_11_CTL);
1397 if (err < 0)
1398 return err;
1399
1400 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1401 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1402
1403 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1404 MRVL88X2011_LED_8_TO_11_CTL, err);
1405 }
1406
1407 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1408 {
1409 int err;
1410
1411 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1412 MRVL88X2011_LED_BLINK_CTL);
1413 if (err >= 0) {
1414 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1415 err |= (rate << 4);
1416
1417 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1418 MRVL88X2011_LED_BLINK_CTL, err);
1419 }
1420
1421 return err;
1422 }
1423
1424 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1425 {
1426 int err;
1427
1428 /* Set LED functions */
1429 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1430 if (err)
1431 return err;
1432
1433 /* led activity */
1434 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1435 if (err)
1436 return err;
1437
1438 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1439 MRVL88X2011_GENERAL_CTL);
1440 if (err < 0)
1441 return err;
1442
1443 err |= MRVL88X2011_ENA_XFPREFCLK;
1444
1445 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1446 MRVL88X2011_GENERAL_CTL, err);
1447 if (err < 0)
1448 return err;
1449
1450 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1451 MRVL88X2011_PMA_PMD_CTL_1);
1452 if (err < 0)
1453 return err;
1454
1455 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1456 err |= MRVL88X2011_LOOPBACK;
1457 else
1458 err &= ~MRVL88X2011_LOOPBACK;
1459
1460 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1461 MRVL88X2011_PMA_PMD_CTL_1, err);
1462 if (err < 0)
1463 return err;
1464
1465 /* Enable PMD */
1466 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1467 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1468 }
1469
1470
1471 static int xcvr_diag_bcm870x(struct niu *np)
1472 {
1473 u16 analog_stat0, tx_alarm_status;
1474 int err = 0;
1475
1476 #if 1
1477 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1478 MII_STAT1000);
1479 if (err < 0)
1480 return err;
1481 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1482
1483 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1484 if (err < 0)
1485 return err;
1486 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1487
1488 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1489 MII_NWAYTEST);
1490 if (err < 0)
1491 return err;
1492 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1493 #endif
1494
1495 /* XXX dig this out it might not be so useful XXX */
1496 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1497 BCM8704_USER_ANALOG_STATUS0);
1498 if (err < 0)
1499 return err;
1500 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1501 BCM8704_USER_ANALOG_STATUS0);
1502 if (err < 0)
1503 return err;
1504 analog_stat0 = err;
1505
1506 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1507 BCM8704_USER_TX_ALARM_STATUS);
1508 if (err < 0)
1509 return err;
1510 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1511 BCM8704_USER_TX_ALARM_STATUS);
1512 if (err < 0)
1513 return err;
1514 tx_alarm_status = err;
1515
1516 if (analog_stat0 != 0x03fc) {
1517 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1518 pr_info("Port %u cable not connected or bad cable\n",
1519 np->port);
1520 } else if (analog_stat0 == 0x639c) {
1521 pr_info("Port %u optical module is bad or missing\n",
1522 np->port);
1523 }
1524 }
1525
1526 return 0;
1527 }
1528
1529 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1530 {
1531 struct niu_link_config *lp = &np->link_config;
1532 int err;
1533
1534 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1535 MII_BMCR);
1536 if (err < 0)
1537 return err;
1538
1539 err &= ~BMCR_LOOPBACK;
1540
1541 if (lp->loopback_mode == LOOPBACK_MAC)
1542 err |= BMCR_LOOPBACK;
1543
1544 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1545 MII_BMCR, err);
1546 if (err)
1547 return err;
1548
1549 return 0;
1550 }
1551
1552 static int xcvr_init_10g_bcm8706(struct niu *np)
1553 {
1554 int err = 0;
1555 u64 val;
1556
1557 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1558 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1559 return err;
1560
1561 val = nr64_mac(XMAC_CONFIG);
1562 val &= ~XMAC_CONFIG_LED_POLARITY;
1563 val |= XMAC_CONFIG_FORCE_LED_ON;
1564 nw64_mac(XMAC_CONFIG, val);
1565
1566 val = nr64(MIF_CONFIG);
1567 val |= MIF_CONFIG_INDIRECT_MODE;
1568 nw64(MIF_CONFIG, val);
1569
1570 err = bcm8704_reset(np);
1571 if (err)
1572 return err;
1573
1574 err = xcvr_10g_set_lb_bcm870x(np);
1575 if (err)
1576 return err;
1577
1578 err = bcm8706_init_user_dev3(np);
1579 if (err)
1580 return err;
1581
1582 err = xcvr_diag_bcm870x(np);
1583 if (err)
1584 return err;
1585
1586 return 0;
1587 }
1588
1589 static int xcvr_init_10g_bcm8704(struct niu *np)
1590 {
1591 int err;
1592
1593 err = bcm8704_reset(np);
1594 if (err)
1595 return err;
1596
1597 err = bcm8704_init_user_dev3(np);
1598 if (err)
1599 return err;
1600
1601 err = xcvr_10g_set_lb_bcm870x(np);
1602 if (err)
1603 return err;
1604
1605 err = xcvr_diag_bcm870x(np);
1606 if (err)
1607 return err;
1608
1609 return 0;
1610 }
1611
1612 static int xcvr_init_10g(struct niu *np)
1613 {
1614 int phy_id, err;
1615 u64 val;
1616
1617 val = nr64_mac(XMAC_CONFIG);
1618 val &= ~XMAC_CONFIG_LED_POLARITY;
1619 val |= XMAC_CONFIG_FORCE_LED_ON;
1620 nw64_mac(XMAC_CONFIG, val);
1621
1622 /* XXX shared resource, lock parent XXX */
1623 val = nr64(MIF_CONFIG);
1624 val |= MIF_CONFIG_INDIRECT_MODE;
1625 nw64(MIF_CONFIG, val);
1626
1627 phy_id = phy_decode(np->parent->port_phy, np->port);
1628 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1629
1630 /* handle different phy types */
1631 switch (phy_id & NIU_PHY_ID_MASK) {
1632 case NIU_PHY_ID_MRVL88X2011:
1633 err = xcvr_init_10g_mrvl88x2011(np);
1634 break;
1635
1636 default: /* bcom 8704 */
1637 err = xcvr_init_10g_bcm8704(np);
1638 break;
1639 }
1640
1641 return err;
1642 }
1643
1644 static int mii_reset(struct niu *np)
1645 {
1646 int limit, err;
1647
1648 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1649 if (err)
1650 return err;
1651
1652 limit = 1000;
1653 while (--limit >= 0) {
1654 udelay(500);
1655 err = mii_read(np, np->phy_addr, MII_BMCR);
1656 if (err < 0)
1657 return err;
1658 if (!(err & BMCR_RESET))
1659 break;
1660 }
1661 if (limit < 0) {
1662 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1663 np->port, err);
1664 return -ENODEV;
1665 }
1666
1667 return 0;
1668 }
1669
1670 static int xcvr_init_1g_rgmii(struct niu *np)
1671 {
1672 int err;
1673 u64 val;
1674 u16 bmcr, bmsr, estat;
1675
1676 val = nr64(MIF_CONFIG);
1677 val &= ~MIF_CONFIG_INDIRECT_MODE;
1678 nw64(MIF_CONFIG, val);
1679
1680 err = mii_reset(np);
1681 if (err)
1682 return err;
1683
1684 err = mii_read(np, np->phy_addr, MII_BMSR);
1685 if (err < 0)
1686 return err;
1687 bmsr = err;
1688
1689 estat = 0;
1690 if (bmsr & BMSR_ESTATEN) {
1691 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1692 if (err < 0)
1693 return err;
1694 estat = err;
1695 }
1696
1697 bmcr = 0;
1698 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1699 if (err)
1700 return err;
1701
1702 if (bmsr & BMSR_ESTATEN) {
1703 u16 ctrl1000 = 0;
1704
1705 if (estat & ESTATUS_1000_TFULL)
1706 ctrl1000 |= ADVERTISE_1000FULL;
1707 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1708 if (err)
1709 return err;
1710 }
1711
1712 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1713
1714 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1715 if (err)
1716 return err;
1717
1718 err = mii_read(np, np->phy_addr, MII_BMCR);
1719 if (err < 0)
1720 return err;
1721 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1722
1723 err = mii_read(np, np->phy_addr, MII_BMSR);
1724 if (err < 0)
1725 return err;
1726
1727 return 0;
1728 }
1729
1730 static int mii_init_common(struct niu *np)
1731 {
1732 struct niu_link_config *lp = &np->link_config;
1733 u16 bmcr, bmsr, adv, estat;
1734 int err;
1735
1736 err = mii_reset(np);
1737 if (err)
1738 return err;
1739
1740 err = mii_read(np, np->phy_addr, MII_BMSR);
1741 if (err < 0)
1742 return err;
1743 bmsr = err;
1744
1745 estat = 0;
1746 if (bmsr & BMSR_ESTATEN) {
1747 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1748 if (err < 0)
1749 return err;
1750 estat = err;
1751 }
1752
1753 bmcr = 0;
1754 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1755 if (err)
1756 return err;
1757
1758 if (lp->loopback_mode == LOOPBACK_MAC) {
1759 bmcr |= BMCR_LOOPBACK;
1760 if (lp->active_speed == SPEED_1000)
1761 bmcr |= BMCR_SPEED1000;
1762 if (lp->active_duplex == DUPLEX_FULL)
1763 bmcr |= BMCR_FULLDPLX;
1764 }
1765
1766 if (lp->loopback_mode == LOOPBACK_PHY) {
1767 u16 aux;
1768
1769 aux = (BCM5464R_AUX_CTL_EXT_LB |
1770 BCM5464R_AUX_CTL_WRITE_1);
1771 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1772 if (err)
1773 return err;
1774 }
1775
1776 if (lp->autoneg) {
1777 u16 ctrl1000;
1778
1779 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1780 if ((bmsr & BMSR_10HALF) &&
1781 (lp->advertising & ADVERTISED_10baseT_Half))
1782 adv |= ADVERTISE_10HALF;
1783 if ((bmsr & BMSR_10FULL) &&
1784 (lp->advertising & ADVERTISED_10baseT_Full))
1785 adv |= ADVERTISE_10FULL;
1786 if ((bmsr & BMSR_100HALF) &&
1787 (lp->advertising & ADVERTISED_100baseT_Half))
1788 adv |= ADVERTISE_100HALF;
1789 if ((bmsr & BMSR_100FULL) &&
1790 (lp->advertising & ADVERTISED_100baseT_Full))
1791 adv |= ADVERTISE_100FULL;
1792 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1793 if (err)
1794 return err;
1795
1796 if (likely(bmsr & BMSR_ESTATEN)) {
1797 ctrl1000 = 0;
1798 if ((estat & ESTATUS_1000_THALF) &&
1799 (lp->advertising & ADVERTISED_1000baseT_Half))
1800 ctrl1000 |= ADVERTISE_1000HALF;
1801 if ((estat & ESTATUS_1000_TFULL) &&
1802 (lp->advertising & ADVERTISED_1000baseT_Full))
1803 ctrl1000 |= ADVERTISE_1000FULL;
1804 err = mii_write(np, np->phy_addr,
1805 MII_CTRL1000, ctrl1000);
1806 if (err)
1807 return err;
1808 }
1809
1810 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1811 } else {
1812 /* !lp->autoneg */
1813 int fulldpx;
1814
1815 if (lp->duplex == DUPLEX_FULL) {
1816 bmcr |= BMCR_FULLDPLX;
1817 fulldpx = 1;
1818 } else if (lp->duplex == DUPLEX_HALF)
1819 fulldpx = 0;
1820 else
1821 return -EINVAL;
1822
1823 if (lp->speed == SPEED_1000) {
1824 /* if X-full requested while not supported, or
1825 X-half requested while not supported... */
1826 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1827 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1828 return -EINVAL;
1829 bmcr |= BMCR_SPEED1000;
1830 } else if (lp->speed == SPEED_100) {
1831 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1832 (!fulldpx && !(bmsr & BMSR_100HALF)))
1833 return -EINVAL;
1834 bmcr |= BMCR_SPEED100;
1835 } else if (lp->speed == SPEED_10) {
1836 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1837 (!fulldpx && !(bmsr & BMSR_10HALF)))
1838 return -EINVAL;
1839 } else
1840 return -EINVAL;
1841 }
1842
1843 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1844 if (err)
1845 return err;
1846
1847 #if 0
1848 err = mii_read(np, np->phy_addr, MII_BMCR);
1849 if (err < 0)
1850 return err;
1851 bmcr = err;
1852
1853 err = mii_read(np, np->phy_addr, MII_BMSR);
1854 if (err < 0)
1855 return err;
1856 bmsr = err;
1857
1858 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1859 np->port, bmcr, bmsr);
1860 #endif
1861
1862 return 0;
1863 }
1864
1865 static int xcvr_init_1g(struct niu *np)
1866 {
1867 u64 val;
1868
1869 /* XXX shared resource, lock parent XXX */
1870 val = nr64(MIF_CONFIG);
1871 val &= ~MIF_CONFIG_INDIRECT_MODE;
1872 nw64(MIF_CONFIG, val);
1873
1874 return mii_init_common(np);
1875 }
1876
1877 static int niu_xcvr_init(struct niu *np)
1878 {
1879 const struct niu_phy_ops *ops = np->phy_ops;
1880 int err;
1881
1882 err = 0;
1883 if (ops->xcvr_init)
1884 err = ops->xcvr_init(np);
1885
1886 return err;
1887 }
1888
1889 static int niu_serdes_init(struct niu *np)
1890 {
1891 const struct niu_phy_ops *ops = np->phy_ops;
1892 int err;
1893
1894 err = 0;
1895 if (ops->serdes_init)
1896 err = ops->serdes_init(np);
1897
1898 return err;
1899 }
1900
1901 static void niu_init_xif(struct niu *);
1902 static void niu_handle_led(struct niu *, int status);
1903
1904 static int niu_link_status_common(struct niu *np, int link_up)
1905 {
1906 struct niu_link_config *lp = &np->link_config;
1907 struct net_device *dev = np->dev;
1908 unsigned long flags;
1909
1910 if (!netif_carrier_ok(dev) && link_up) {
1911 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1912 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1913 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1914 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1915 "10Mbit/sec",
1916 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1917
1918 spin_lock_irqsave(&np->lock, flags);
1919 niu_init_xif(np);
1920 niu_handle_led(np, 1);
1921 spin_unlock_irqrestore(&np->lock, flags);
1922
1923 netif_carrier_on(dev);
1924 } else if (netif_carrier_ok(dev) && !link_up) {
1925 netif_warn(np, link, dev, "Link is down\n");
1926 spin_lock_irqsave(&np->lock, flags);
1927 niu_handle_led(np, 0);
1928 spin_unlock_irqrestore(&np->lock, flags);
1929 netif_carrier_off(dev);
1930 }
1931
1932 return 0;
1933 }
1934
1935 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1936 {
1937 int err, link_up, pma_status, pcs_status;
1938
1939 link_up = 0;
1940
1941 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1942 MRVL88X2011_10G_PMD_STATUS_2);
1943 if (err < 0)
1944 goto out;
1945
1946 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1947 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1948 MRVL88X2011_PMA_PMD_STATUS_1);
1949 if (err < 0)
1950 goto out;
1951
1952 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1953
1954 /* Check PMC Register : 3.0001.2 == 1: read twice */
1955 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1956 MRVL88X2011_PMA_PMD_STATUS_1);
1957 if (err < 0)
1958 goto out;
1959
1960 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1961 MRVL88X2011_PMA_PMD_STATUS_1);
1962 if (err < 0)
1963 goto out;
1964
1965 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1966
1967 /* Check XGXS Register : 4.0018.[0-3,12] */
1968 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1969 MRVL88X2011_10G_XGXS_LANE_STAT);
1970 if (err < 0)
1971 goto out;
1972
1973 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1974 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1975 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1976 0x800))
1977 link_up = (pma_status && pcs_status) ? 1 : 0;
1978
1979 np->link_config.active_speed = SPEED_10000;
1980 np->link_config.active_duplex = DUPLEX_FULL;
1981 err = 0;
1982 out:
1983 mrvl88x2011_act_led(np, (link_up ?
1984 MRVL88X2011_LED_CTL_PCS_ACT :
1985 MRVL88X2011_LED_CTL_OFF));
1986
1987 *link_up_p = link_up;
1988 return err;
1989 }
1990
1991 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1992 {
1993 int err, link_up;
1994 link_up = 0;
1995
1996 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1997 BCM8704_PMD_RCV_SIGDET);
1998 if (err < 0 || err == 0xffff)
1999 goto out;
2000 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2001 err = 0;
2002 goto out;
2003 }
2004
2005 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2006 BCM8704_PCS_10G_R_STATUS);
2007 if (err < 0)
2008 goto out;
2009
2010 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2011 err = 0;
2012 goto out;
2013 }
2014
2015 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2016 BCM8704_PHYXS_XGXS_LANE_STAT);
2017 if (err < 0)
2018 goto out;
2019 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2020 PHYXS_XGXS_LANE_STAT_MAGIC |
2021 PHYXS_XGXS_LANE_STAT_PATTEST |
2022 PHYXS_XGXS_LANE_STAT_LANE3 |
2023 PHYXS_XGXS_LANE_STAT_LANE2 |
2024 PHYXS_XGXS_LANE_STAT_LANE1 |
2025 PHYXS_XGXS_LANE_STAT_LANE0)) {
2026 err = 0;
2027 np->link_config.active_speed = SPEED_INVALID;
2028 np->link_config.active_duplex = DUPLEX_INVALID;
2029 goto out;
2030 }
2031
2032 link_up = 1;
2033 np->link_config.active_speed = SPEED_10000;
2034 np->link_config.active_duplex = DUPLEX_FULL;
2035 err = 0;
2036
2037 out:
2038 *link_up_p = link_up;
2039 return err;
2040 }
2041
2042 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2043 {
2044 int err, link_up;
2045
2046 link_up = 0;
2047
2048 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2049 BCM8704_PMD_RCV_SIGDET);
2050 if (err < 0)
2051 goto out;
2052 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2053 err = 0;
2054 goto out;
2055 }
2056
2057 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2058 BCM8704_PCS_10G_R_STATUS);
2059 if (err < 0)
2060 goto out;
2061 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2062 err = 0;
2063 goto out;
2064 }
2065
2066 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2067 BCM8704_PHYXS_XGXS_LANE_STAT);
2068 if (err < 0)
2069 goto out;
2070
2071 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2072 PHYXS_XGXS_LANE_STAT_MAGIC |
2073 PHYXS_XGXS_LANE_STAT_LANE3 |
2074 PHYXS_XGXS_LANE_STAT_LANE2 |
2075 PHYXS_XGXS_LANE_STAT_LANE1 |
2076 PHYXS_XGXS_LANE_STAT_LANE0)) {
2077 err = 0;
2078 goto out;
2079 }
2080
2081 link_up = 1;
2082 np->link_config.active_speed = SPEED_10000;
2083 np->link_config.active_duplex = DUPLEX_FULL;
2084 err = 0;
2085
2086 out:
2087 *link_up_p = link_up;
2088 return err;
2089 }
2090
2091 static int link_status_10g(struct niu *np, int *link_up_p)
2092 {
2093 unsigned long flags;
2094 int err = -EINVAL;
2095
2096 spin_lock_irqsave(&np->lock, flags);
2097
2098 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2099 int phy_id;
2100
2101 phy_id = phy_decode(np->parent->port_phy, np->port);
2102 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2103
2104 /* handle different phy types */
2105 switch (phy_id & NIU_PHY_ID_MASK) {
2106 case NIU_PHY_ID_MRVL88X2011:
2107 err = link_status_10g_mrvl(np, link_up_p);
2108 break;
2109
2110 default: /* bcom 8704 */
2111 err = link_status_10g_bcom(np, link_up_p);
2112 break;
2113 }
2114 }
2115
2116 spin_unlock_irqrestore(&np->lock, flags);
2117
2118 return err;
2119 }
2120
2121 static int niu_10g_phy_present(struct niu *np)
2122 {
2123 u64 sig, mask, val;
2124
2125 sig = nr64(ESR_INT_SIGNALS);
2126 switch (np->port) {
2127 case 0:
2128 mask = ESR_INT_SIGNALS_P0_BITS;
2129 val = (ESR_INT_SRDY0_P0 |
2130 ESR_INT_DET0_P0 |
2131 ESR_INT_XSRDY_P0 |
2132 ESR_INT_XDP_P0_CH3 |
2133 ESR_INT_XDP_P0_CH2 |
2134 ESR_INT_XDP_P0_CH1 |
2135 ESR_INT_XDP_P0_CH0);
2136 break;
2137
2138 case 1:
2139 mask = ESR_INT_SIGNALS_P1_BITS;
2140 val = (ESR_INT_SRDY0_P1 |
2141 ESR_INT_DET0_P1 |
2142 ESR_INT_XSRDY_P1 |
2143 ESR_INT_XDP_P1_CH3 |
2144 ESR_INT_XDP_P1_CH2 |
2145 ESR_INT_XDP_P1_CH1 |
2146 ESR_INT_XDP_P1_CH0);
2147 break;
2148
2149 default:
2150 return 0;
2151 }
2152
2153 if ((sig & mask) != val)
2154 return 0;
2155 return 1;
2156 }
2157
2158 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2159 {
2160 unsigned long flags;
2161 int err = 0;
2162 int phy_present;
2163 int phy_present_prev;
2164
2165 spin_lock_irqsave(&np->lock, flags);
2166
2167 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2168 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2169 1 : 0;
2170 phy_present = niu_10g_phy_present(np);
2171 if (phy_present != phy_present_prev) {
2172 /* state change */
2173 if (phy_present) {
2174 /* A NEM was just plugged in */
2175 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2176 if (np->phy_ops->xcvr_init)
2177 err = np->phy_ops->xcvr_init(np);
2178 if (err) {
2179 err = mdio_read(np, np->phy_addr,
2180 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2181 if (err == 0xffff) {
2182 /* No mdio, back-to-back XAUI */
2183 goto out;
2184 }
2185 /* debounce */
2186 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2187 }
2188 } else {
2189 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2190 *link_up_p = 0;
2191 netif_warn(np, link, np->dev,
2192 "Hotplug PHY Removed\n");
2193 }
2194 }
2195 out:
2196 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2197 err = link_status_10g_bcm8706(np, link_up_p);
2198 if (err == 0xffff) {
2199 /* No mdio, back-to-back XAUI: it is C10NEM */
2200 *link_up_p = 1;
2201 np->link_config.active_speed = SPEED_10000;
2202 np->link_config.active_duplex = DUPLEX_FULL;
2203 }
2204 }
2205 }
2206
2207 spin_unlock_irqrestore(&np->lock, flags);
2208
2209 return 0;
2210 }
2211
2212 static int niu_link_status(struct niu *np, int *link_up_p)
2213 {
2214 const struct niu_phy_ops *ops = np->phy_ops;
2215 int err;
2216
2217 err = 0;
2218 if (ops->link_status)
2219 err = ops->link_status(np, link_up_p);
2220
2221 return err;
2222 }
2223
2224 static void niu_timer(unsigned long __opaque)
2225 {
2226 struct niu *np = (struct niu *) __opaque;
2227 unsigned long off;
2228 int err, link_up;
2229
2230 err = niu_link_status(np, &link_up);
2231 if (!err)
2232 niu_link_status_common(np, link_up);
2233
2234 if (netif_carrier_ok(np->dev))
2235 off = 5 * HZ;
2236 else
2237 off = 1 * HZ;
2238 np->timer.expires = jiffies + off;
2239
2240 add_timer(&np->timer);
2241 }
2242
2243 static const struct niu_phy_ops phy_ops_10g_serdes = {
2244 .serdes_init = serdes_init_10g_serdes,
2245 .link_status = link_status_10g_serdes,
2246 };
2247
2248 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2249 .serdes_init = serdes_init_niu_10g_serdes,
2250 .link_status = link_status_10g_serdes,
2251 };
2252
2253 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2254 .serdes_init = serdes_init_niu_1g_serdes,
2255 .link_status = link_status_1g_serdes,
2256 };
2257
2258 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2259 .xcvr_init = xcvr_init_1g_rgmii,
2260 .link_status = link_status_1g_rgmii,
2261 };
2262
2263 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2264 .serdes_init = serdes_init_niu_10g_fiber,
2265 .xcvr_init = xcvr_init_10g,
2266 .link_status = link_status_10g,
2267 };
2268
2269 static const struct niu_phy_ops phy_ops_10g_fiber = {
2270 .serdes_init = serdes_init_10g,
2271 .xcvr_init = xcvr_init_10g,
2272 .link_status = link_status_10g,
2273 };
2274
2275 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2276 .serdes_init = serdes_init_10g,
2277 .xcvr_init = xcvr_init_10g_bcm8706,
2278 .link_status = link_status_10g_hotplug,
2279 };
2280
2281 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2282 .serdes_init = serdes_init_niu_10g_fiber,
2283 .xcvr_init = xcvr_init_10g_bcm8706,
2284 .link_status = link_status_10g_hotplug,
2285 };
2286
2287 static const struct niu_phy_ops phy_ops_10g_copper = {
2288 .serdes_init = serdes_init_10g,
2289 .link_status = link_status_10g, /* XXX */
2290 };
2291
2292 static const struct niu_phy_ops phy_ops_1g_fiber = {
2293 .serdes_init = serdes_init_1g,
2294 .xcvr_init = xcvr_init_1g,
2295 .link_status = link_status_1g,
2296 };
2297
2298 static const struct niu_phy_ops phy_ops_1g_copper = {
2299 .xcvr_init = xcvr_init_1g,
2300 .link_status = link_status_1g,
2301 };
2302
2303 struct niu_phy_template {
2304 const struct niu_phy_ops *ops;
2305 u32 phy_addr_base;
2306 };
2307
2308 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2309 .ops = &phy_ops_10g_fiber_niu,
2310 .phy_addr_base = 16,
2311 };
2312
2313 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2314 .ops = &phy_ops_10g_serdes_niu,
2315 .phy_addr_base = 0,
2316 };
2317
2318 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2319 .ops = &phy_ops_1g_serdes_niu,
2320 .phy_addr_base = 0,
2321 };
2322
2323 static const struct niu_phy_template phy_template_10g_fiber = {
2324 .ops = &phy_ops_10g_fiber,
2325 .phy_addr_base = 8,
2326 };
2327
2328 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2329 .ops = &phy_ops_10g_fiber_hotplug,
2330 .phy_addr_base = 8,
2331 };
2332
2333 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2334 .ops = &phy_ops_niu_10g_hotplug,
2335 .phy_addr_base = 8,
2336 };
2337
2338 static const struct niu_phy_template phy_template_10g_copper = {
2339 .ops = &phy_ops_10g_copper,
2340 .phy_addr_base = 10,
2341 };
2342
2343 static const struct niu_phy_template phy_template_1g_fiber = {
2344 .ops = &phy_ops_1g_fiber,
2345 .phy_addr_base = 0,
2346 };
2347
2348 static const struct niu_phy_template phy_template_1g_copper = {
2349 .ops = &phy_ops_1g_copper,
2350 .phy_addr_base = 0,
2351 };
2352
2353 static const struct niu_phy_template phy_template_1g_rgmii = {
2354 .ops = &phy_ops_1g_rgmii,
2355 .phy_addr_base = 0,
2356 };
2357
2358 static const struct niu_phy_template phy_template_10g_serdes = {
2359 .ops = &phy_ops_10g_serdes,
2360 .phy_addr_base = 0,
2361 };
2362
2363 static int niu_atca_port_num[4] = {
2364 0, 0, 11, 10
2365 };
2366
2367 static int serdes_init_10g_serdes(struct niu *np)
2368 {
2369 struct niu_link_config *lp = &np->link_config;
2370 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2371 u64 ctrl_val, test_cfg_val, sig, mask, val;
2372
2373 switch (np->port) {
2374 case 0:
2375 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2376 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2377 pll_cfg = ENET_SERDES_0_PLL_CFG;
2378 break;
2379 case 1:
2380 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2381 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2382 pll_cfg = ENET_SERDES_1_PLL_CFG;
2383 break;
2384
2385 default:
2386 return -EINVAL;
2387 }
2388 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2389 ENET_SERDES_CTRL_SDET_1 |
2390 ENET_SERDES_CTRL_SDET_2 |
2391 ENET_SERDES_CTRL_SDET_3 |
2392 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2393 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2394 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2395 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2396 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2397 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2398 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2399 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2400 test_cfg_val = 0;
2401
2402 if (lp->loopback_mode == LOOPBACK_PHY) {
2403 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2404 ENET_SERDES_TEST_MD_0_SHIFT) |
2405 (ENET_TEST_MD_PAD_LOOPBACK <<
2406 ENET_SERDES_TEST_MD_1_SHIFT) |
2407 (ENET_TEST_MD_PAD_LOOPBACK <<
2408 ENET_SERDES_TEST_MD_2_SHIFT) |
2409 (ENET_TEST_MD_PAD_LOOPBACK <<
2410 ENET_SERDES_TEST_MD_3_SHIFT));
2411 }
2412
2413 esr_reset(np);
2414 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2415 nw64(ctrl_reg, ctrl_val);
2416 nw64(test_cfg_reg, test_cfg_val);
2417
2418 /* Initialize all 4 lanes of the SERDES. */
2419 for (i = 0; i < 4; i++) {
2420 u32 rxtx_ctrl, glue0;
2421 int err;
2422
2423 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2424 if (err)
2425 return err;
2426 err = esr_read_glue0(np, i, &glue0);
2427 if (err)
2428 return err;
2429
2430 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2431 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2432 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2433
2434 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2435 ESR_GLUE_CTRL0_THCNT |
2436 ESR_GLUE_CTRL0_BLTIME);
2437 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2438 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2439 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2440 (BLTIME_300_CYCLES <<
2441 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2442
2443 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2444 if (err)
2445 return err;
2446 err = esr_write_glue0(np, i, glue0);
2447 if (err)
2448 return err;
2449 }
2450
2451
2452 sig = nr64(ESR_INT_SIGNALS);
2453 switch (np->port) {
2454 case 0:
2455 mask = ESR_INT_SIGNALS_P0_BITS;
2456 val = (ESR_INT_SRDY0_P0 |
2457 ESR_INT_DET0_P0 |
2458 ESR_INT_XSRDY_P0 |
2459 ESR_INT_XDP_P0_CH3 |
2460 ESR_INT_XDP_P0_CH2 |
2461 ESR_INT_XDP_P0_CH1 |
2462 ESR_INT_XDP_P0_CH0);
2463 break;
2464
2465 case 1:
2466 mask = ESR_INT_SIGNALS_P1_BITS;
2467 val = (ESR_INT_SRDY0_P1 |
2468 ESR_INT_DET0_P1 |
2469 ESR_INT_XSRDY_P1 |
2470 ESR_INT_XDP_P1_CH3 |
2471 ESR_INT_XDP_P1_CH2 |
2472 ESR_INT_XDP_P1_CH1 |
2473 ESR_INT_XDP_P1_CH0);
2474 break;
2475
2476 default:
2477 return -EINVAL;
2478 }
2479
2480 if ((sig & mask) != val) {
2481 int err;
2482 err = serdes_init_1g_serdes(np);
2483 if (!err) {
2484 np->flags &= ~NIU_FLAGS_10G;
2485 np->mac_xcvr = MAC_XCVR_PCS;
2486 } else {
2487 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2488 np->port);
2489 return -ENODEV;
2490 }
2491 }
2492
2493 return 0;
2494 }
2495
2496 static int niu_determine_phy_disposition(struct niu *np)
2497 {
2498 struct niu_parent *parent = np->parent;
2499 u8 plat_type = parent->plat_type;
2500 const struct niu_phy_template *tp;
2501 u32 phy_addr_off = 0;
2502
2503 if (plat_type == PLAT_TYPE_NIU) {
2504 switch (np->flags &
2505 (NIU_FLAGS_10G |
2506 NIU_FLAGS_FIBER |
2507 NIU_FLAGS_XCVR_SERDES)) {
2508 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2509 /* 10G Serdes */
2510 tp = &phy_template_niu_10g_serdes;
2511 break;
2512 case NIU_FLAGS_XCVR_SERDES:
2513 /* 1G Serdes */
2514 tp = &phy_template_niu_1g_serdes;
2515 break;
2516 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2517 /* 10G Fiber */
2518 default:
2519 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2520 tp = &phy_template_niu_10g_hotplug;
2521 if (np->port == 0)
2522 phy_addr_off = 8;
2523 if (np->port == 1)
2524 phy_addr_off = 12;
2525 } else {
2526 tp = &phy_template_niu_10g_fiber;
2527 phy_addr_off += np->port;
2528 }
2529 break;
2530 }
2531 } else {
2532 switch (np->flags &
2533 (NIU_FLAGS_10G |
2534 NIU_FLAGS_FIBER |
2535 NIU_FLAGS_XCVR_SERDES)) {
2536 case 0:
2537 /* 1G copper */
2538 tp = &phy_template_1g_copper;
2539 if (plat_type == PLAT_TYPE_VF_P0)
2540 phy_addr_off = 10;
2541 else if (plat_type == PLAT_TYPE_VF_P1)
2542 phy_addr_off = 26;
2543
2544 phy_addr_off += (np->port ^ 0x3);
2545 break;
2546
2547 case NIU_FLAGS_10G:
2548 /* 10G copper */
2549 tp = &phy_template_10g_copper;
2550 break;
2551
2552 case NIU_FLAGS_FIBER:
2553 /* 1G fiber */
2554 tp = &phy_template_1g_fiber;
2555 break;
2556
2557 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2558 /* 10G fiber */
2559 tp = &phy_template_10g_fiber;
2560 if (plat_type == PLAT_TYPE_VF_P0 ||
2561 plat_type == PLAT_TYPE_VF_P1)
2562 phy_addr_off = 8;
2563 phy_addr_off += np->port;
2564 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2565 tp = &phy_template_10g_fiber_hotplug;
2566 if (np->port == 0)
2567 phy_addr_off = 8;
2568 if (np->port == 1)
2569 phy_addr_off = 12;
2570 }
2571 break;
2572
2573 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2574 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2575 case NIU_FLAGS_XCVR_SERDES:
2576 switch(np->port) {
2577 case 0:
2578 case 1:
2579 tp = &phy_template_10g_serdes;
2580 break;
2581 case 2:
2582 case 3:
2583 tp = &phy_template_1g_rgmii;
2584 break;
2585 default:
2586 return -EINVAL;
2587 }
2588 phy_addr_off = niu_atca_port_num[np->port];
2589 break;
2590
2591 default:
2592 return -EINVAL;
2593 }
2594 }
2595
2596 np->phy_ops = tp->ops;
2597 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2598
2599 return 0;
2600 }
2601
2602 static int niu_init_link(struct niu *np)
2603 {
2604 struct niu_parent *parent = np->parent;
2605 int err, ignore;
2606
2607 if (parent->plat_type == PLAT_TYPE_NIU) {
2608 err = niu_xcvr_init(np);
2609 if (err)
2610 return err;
2611 msleep(200);
2612 }
2613 err = niu_serdes_init(np);
2614 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2615 return err;
2616 msleep(200);
2617 err = niu_xcvr_init(np);
2618 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2619 niu_link_status(np, &ignore);
2620 return 0;
2621 }
2622
2623 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2624 {
2625 u16 reg0 = addr[4] << 8 | addr[5];
2626 u16 reg1 = addr[2] << 8 | addr[3];
2627 u16 reg2 = addr[0] << 8 | addr[1];
2628
2629 if (np->flags & NIU_FLAGS_XMAC) {
2630 nw64_mac(XMAC_ADDR0, reg0);
2631 nw64_mac(XMAC_ADDR1, reg1);
2632 nw64_mac(XMAC_ADDR2, reg2);
2633 } else {
2634 nw64_mac(BMAC_ADDR0, reg0);
2635 nw64_mac(BMAC_ADDR1, reg1);
2636 nw64_mac(BMAC_ADDR2, reg2);
2637 }
2638 }
2639
2640 static int niu_num_alt_addr(struct niu *np)
2641 {
2642 if (np->flags & NIU_FLAGS_XMAC)
2643 return XMAC_NUM_ALT_ADDR;
2644 else
2645 return BMAC_NUM_ALT_ADDR;
2646 }
2647
2648 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2649 {
2650 u16 reg0 = addr[4] << 8 | addr[5];
2651 u16 reg1 = addr[2] << 8 | addr[3];
2652 u16 reg2 = addr[0] << 8 | addr[1];
2653
2654 if (index >= niu_num_alt_addr(np))
2655 return -EINVAL;
2656
2657 if (np->flags & NIU_FLAGS_XMAC) {
2658 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2659 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2660 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2661 } else {
2662 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2663 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2664 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2665 }
2666
2667 return 0;
2668 }
2669
2670 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2671 {
2672 unsigned long reg;
2673 u64 val, mask;
2674
2675 if (index >= niu_num_alt_addr(np))
2676 return -EINVAL;
2677
2678 if (np->flags & NIU_FLAGS_XMAC) {
2679 reg = XMAC_ADDR_CMPEN;
2680 mask = 1 << index;
2681 } else {
2682 reg = BMAC_ADDR_CMPEN;
2683 mask = 1 << (index + 1);
2684 }
2685
2686 val = nr64_mac(reg);
2687 if (on)
2688 val |= mask;
2689 else
2690 val &= ~mask;
2691 nw64_mac(reg, val);
2692
2693 return 0;
2694 }
2695
2696 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2697 int num, int mac_pref)
2698 {
2699 u64 val = nr64_mac(reg);
2700 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2701 val |= num;
2702 if (mac_pref)
2703 val |= HOST_INFO_MPR;
2704 nw64_mac(reg, val);
2705 }
2706
2707 static int __set_rdc_table_num(struct niu *np,
2708 int xmac_index, int bmac_index,
2709 int rdc_table_num, int mac_pref)
2710 {
2711 unsigned long reg;
2712
2713 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2714 return -EINVAL;
2715 if (np->flags & NIU_FLAGS_XMAC)
2716 reg = XMAC_HOST_INFO(xmac_index);
2717 else
2718 reg = BMAC_HOST_INFO(bmac_index);
2719 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2720 return 0;
2721 }
2722
2723 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2724 int mac_pref)
2725 {
2726 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2727 }
2728
2729 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2730 int mac_pref)
2731 {
2732 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2733 }
2734
2735 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2736 int table_num, int mac_pref)
2737 {
2738 if (idx >= niu_num_alt_addr(np))
2739 return -EINVAL;
2740 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2741 }
2742
2743 static u64 vlan_entry_set_parity(u64 reg_val)
2744 {
2745 u64 port01_mask;
2746 u64 port23_mask;
2747
2748 port01_mask = 0x00ff;
2749 port23_mask = 0xff00;
2750
2751 if (hweight64(reg_val & port01_mask) & 1)
2752 reg_val |= ENET_VLAN_TBL_PARITY0;
2753 else
2754 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2755
2756 if (hweight64(reg_val & port23_mask) & 1)
2757 reg_val |= ENET_VLAN_TBL_PARITY1;
2758 else
2759 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2760
2761 return reg_val;
2762 }
2763
2764 static void vlan_tbl_write(struct niu *np, unsigned long index,
2765 int port, int vpr, int rdc_table)
2766 {
2767 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2768
2769 reg_val &= ~((ENET_VLAN_TBL_VPR |
2770 ENET_VLAN_TBL_VLANRDCTBLN) <<
2771 ENET_VLAN_TBL_SHIFT(port));
2772 if (vpr)
2773 reg_val |= (ENET_VLAN_TBL_VPR <<
2774 ENET_VLAN_TBL_SHIFT(port));
2775 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2776
2777 reg_val = vlan_entry_set_parity(reg_val);
2778
2779 nw64(ENET_VLAN_TBL(index), reg_val);
2780 }
2781
2782 static void vlan_tbl_clear(struct niu *np)
2783 {
2784 int i;
2785
2786 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2787 nw64(ENET_VLAN_TBL(i), 0);
2788 }
2789
2790 static int tcam_wait_bit(struct niu *np, u64 bit)
2791 {
2792 int limit = 1000;
2793
2794 while (--limit > 0) {
2795 if (nr64(TCAM_CTL) & bit)
2796 break;
2797 udelay(1);
2798 }
2799 if (limit <= 0)
2800 return -ENODEV;
2801
2802 return 0;
2803 }
2804
2805 static int tcam_flush(struct niu *np, int index)
2806 {
2807 nw64(TCAM_KEY_0, 0x00);
2808 nw64(TCAM_KEY_MASK_0, 0xff);
2809 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2810
2811 return tcam_wait_bit(np, TCAM_CTL_STAT);
2812 }
2813
2814 #if 0
2815 static int tcam_read(struct niu *np, int index,
2816 u64 *key, u64 *mask)
2817 {
2818 int err;
2819
2820 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2821 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2822 if (!err) {
2823 key[0] = nr64(TCAM_KEY_0);
2824 key[1] = nr64(TCAM_KEY_1);
2825 key[2] = nr64(TCAM_KEY_2);
2826 key[3] = nr64(TCAM_KEY_3);
2827 mask[0] = nr64(TCAM_KEY_MASK_0);
2828 mask[1] = nr64(TCAM_KEY_MASK_1);
2829 mask[2] = nr64(TCAM_KEY_MASK_2);
2830 mask[3] = nr64(TCAM_KEY_MASK_3);
2831 }
2832 return err;
2833 }
2834 #endif
2835
2836 static int tcam_write(struct niu *np, int index,
2837 u64 *key, u64 *mask)
2838 {
2839 nw64(TCAM_KEY_0, key[0]);
2840 nw64(TCAM_KEY_1, key[1]);
2841 nw64(TCAM_KEY_2, key[2]);
2842 nw64(TCAM_KEY_3, key[3]);
2843 nw64(TCAM_KEY_MASK_0, mask[0]);
2844 nw64(TCAM_KEY_MASK_1, mask[1]);
2845 nw64(TCAM_KEY_MASK_2, mask[2]);
2846 nw64(TCAM_KEY_MASK_3, mask[3]);
2847 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2848
2849 return tcam_wait_bit(np, TCAM_CTL_STAT);
2850 }
2851
2852 #if 0
2853 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2854 {
2855 int err;
2856
2857 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2858 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2859 if (!err)
2860 *data = nr64(TCAM_KEY_1);
2861
2862 return err;
2863 }
2864 #endif
2865
2866 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2867 {
2868 nw64(TCAM_KEY_1, assoc_data);
2869 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2870
2871 return tcam_wait_bit(np, TCAM_CTL_STAT);
2872 }
2873
2874 static void tcam_enable(struct niu *np, int on)
2875 {
2876 u64 val = nr64(FFLP_CFG_1);
2877
2878 if (on)
2879 val &= ~FFLP_CFG_1_TCAM_DIS;
2880 else
2881 val |= FFLP_CFG_1_TCAM_DIS;
2882 nw64(FFLP_CFG_1, val);
2883 }
2884
2885 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2886 {
2887 u64 val = nr64(FFLP_CFG_1);
2888
2889 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2890 FFLP_CFG_1_CAMLAT |
2891 FFLP_CFG_1_CAMRATIO);
2892 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2893 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2894 nw64(FFLP_CFG_1, val);
2895
2896 val = nr64(FFLP_CFG_1);
2897 val |= FFLP_CFG_1_FFLPINITDONE;
2898 nw64(FFLP_CFG_1, val);
2899 }
2900
2901 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2902 int on)
2903 {
2904 unsigned long reg;
2905 u64 val;
2906
2907 if (class < CLASS_CODE_ETHERTYPE1 ||
2908 class > CLASS_CODE_ETHERTYPE2)
2909 return -EINVAL;
2910
2911 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2912 val = nr64(reg);
2913 if (on)
2914 val |= L2_CLS_VLD;
2915 else
2916 val &= ~L2_CLS_VLD;
2917 nw64(reg, val);
2918
2919 return 0;
2920 }
2921
2922 #if 0
2923 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2924 u64 ether_type)
2925 {
2926 unsigned long reg;
2927 u64 val;
2928
2929 if (class < CLASS_CODE_ETHERTYPE1 ||
2930 class > CLASS_CODE_ETHERTYPE2 ||
2931 (ether_type & ~(u64)0xffff) != 0)
2932 return -EINVAL;
2933
2934 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2935 val = nr64(reg);
2936 val &= ~L2_CLS_ETYPE;
2937 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2938 nw64(reg, val);
2939
2940 return 0;
2941 }
2942 #endif
2943
2944 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2945 int on)
2946 {
2947 unsigned long reg;
2948 u64 val;
2949
2950 if (class < CLASS_CODE_USER_PROG1 ||
2951 class > CLASS_CODE_USER_PROG4)
2952 return -EINVAL;
2953
2954 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2955 val = nr64(reg);
2956 if (on)
2957 val |= L3_CLS_VALID;
2958 else
2959 val &= ~L3_CLS_VALID;
2960 nw64(reg, val);
2961
2962 return 0;
2963 }
2964
2965 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2966 int ipv6, u64 protocol_id,
2967 u64 tos_mask, u64 tos_val)
2968 {
2969 unsigned long reg;
2970 u64 val;
2971
2972 if (class < CLASS_CODE_USER_PROG1 ||
2973 class > CLASS_CODE_USER_PROG4 ||
2974 (protocol_id & ~(u64)0xff) != 0 ||
2975 (tos_mask & ~(u64)0xff) != 0 ||
2976 (tos_val & ~(u64)0xff) != 0)
2977 return -EINVAL;
2978
2979 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2980 val = nr64(reg);
2981 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2982 L3_CLS_TOSMASK | L3_CLS_TOS);
2983 if (ipv6)
2984 val |= L3_CLS_IPVER;
2985 val |= (protocol_id << L3_CLS_PID_SHIFT);
2986 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2987 val |= (tos_val << L3_CLS_TOS_SHIFT);
2988 nw64(reg, val);
2989
2990 return 0;
2991 }
2992
2993 static int tcam_early_init(struct niu *np)
2994 {
2995 unsigned long i;
2996 int err;
2997
2998 tcam_enable(np, 0);
2999 tcam_set_lat_and_ratio(np,
3000 DEFAULT_TCAM_LATENCY,
3001 DEFAULT_TCAM_ACCESS_RATIO);
3002 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3003 err = tcam_user_eth_class_enable(np, i, 0);
3004 if (err)
3005 return err;
3006 }
3007 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3008 err = tcam_user_ip_class_enable(np, i, 0);
3009 if (err)
3010 return err;
3011 }
3012
3013 return 0;
3014 }
3015
3016 static int tcam_flush_all(struct niu *np)
3017 {
3018 unsigned long i;
3019
3020 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3021 int err = tcam_flush(np, i);
3022 if (err)
3023 return err;
3024 }
3025 return 0;
3026 }
3027
3028 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3029 {
3030 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3031 }
3032
3033 #if 0
3034 static int hash_read(struct niu *np, unsigned long partition,
3035 unsigned long index, unsigned long num_entries,
3036 u64 *data)
3037 {
3038 u64 val = hash_addr_regval(index, num_entries);
3039 unsigned long i;
3040
3041 if (partition >= FCRAM_NUM_PARTITIONS ||
3042 index + num_entries > FCRAM_SIZE)
3043 return -EINVAL;
3044
3045 nw64(HASH_TBL_ADDR(partition), val);
3046 for (i = 0; i < num_entries; i++)
3047 data[i] = nr64(HASH_TBL_DATA(partition));
3048
3049 return 0;
3050 }
3051 #endif
3052
3053 static int hash_write(struct niu *np, unsigned long partition,
3054 unsigned long index, unsigned long num_entries,
3055 u64 *data)
3056 {
3057 u64 val = hash_addr_regval(index, num_entries);
3058 unsigned long i;
3059
3060 if (partition >= FCRAM_NUM_PARTITIONS ||
3061 index + (num_entries * 8) > FCRAM_SIZE)
3062 return -EINVAL;
3063
3064 nw64(HASH_TBL_ADDR(partition), val);
3065 for (i = 0; i < num_entries; i++)
3066 nw64(HASH_TBL_DATA(partition), data[i]);
3067
3068 return 0;
3069 }
3070
3071 static void fflp_reset(struct niu *np)
3072 {
3073 u64 val;
3074
3075 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3076 udelay(10);
3077 nw64(FFLP_CFG_1, 0);
3078
3079 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3080 nw64(FFLP_CFG_1, val);
3081 }
3082
3083 static void fflp_set_timings(struct niu *np)
3084 {
3085 u64 val = nr64(FFLP_CFG_1);
3086
3087 val &= ~FFLP_CFG_1_FFLPINITDONE;
3088 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3089 nw64(FFLP_CFG_1, val);
3090
3091 val = nr64(FFLP_CFG_1);
3092 val |= FFLP_CFG_1_FFLPINITDONE;
3093 nw64(FFLP_CFG_1, val);
3094
3095 val = nr64(FCRAM_REF_TMR);
3096 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3097 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3098 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3099 nw64(FCRAM_REF_TMR, val);
3100 }
3101
3102 static int fflp_set_partition(struct niu *np, u64 partition,
3103 u64 mask, u64 base, int enable)
3104 {
3105 unsigned long reg;
3106 u64 val;
3107
3108 if (partition >= FCRAM_NUM_PARTITIONS ||
3109 (mask & ~(u64)0x1f) != 0 ||
3110 (base & ~(u64)0x1f) != 0)
3111 return -EINVAL;
3112
3113 reg = FLW_PRT_SEL(partition);
3114
3115 val = nr64(reg);
3116 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3117 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3118 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3119 if (enable)
3120 val |= FLW_PRT_SEL_EXT;
3121 nw64(reg, val);
3122
3123 return 0;
3124 }
3125
3126 static int fflp_disable_all_partitions(struct niu *np)
3127 {
3128 unsigned long i;
3129
3130 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3131 int err = fflp_set_partition(np, 0, 0, 0, 0);
3132 if (err)
3133 return err;
3134 }
3135 return 0;
3136 }
3137
3138 static void fflp_llcsnap_enable(struct niu *np, int on)
3139 {
3140 u64 val = nr64(FFLP_CFG_1);
3141
3142 if (on)
3143 val |= FFLP_CFG_1_LLCSNAP;
3144 else
3145 val &= ~FFLP_CFG_1_LLCSNAP;
3146 nw64(FFLP_CFG_1, val);
3147 }
3148
3149 static void fflp_errors_enable(struct niu *np, int on)
3150 {
3151 u64 val = nr64(FFLP_CFG_1);
3152
3153 if (on)
3154 val &= ~FFLP_CFG_1_ERRORDIS;
3155 else
3156 val |= FFLP_CFG_1_ERRORDIS;
3157 nw64(FFLP_CFG_1, val);
3158 }
3159
3160 static int fflp_hash_clear(struct niu *np)
3161 {
3162 struct fcram_hash_ipv4 ent;
3163 unsigned long i;
3164
3165 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3166 memset(&ent, 0, sizeof(ent));
3167 ent.header = HASH_HEADER_EXT;
3168
3169 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3170 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3171 if (err)
3172 return err;
3173 }
3174 return 0;
3175 }
3176
3177 static int fflp_early_init(struct niu *np)
3178 {
3179 struct niu_parent *parent;
3180 unsigned long flags;
3181 int err;
3182
3183 niu_lock_parent(np, flags);
3184
3185 parent = np->parent;
3186 err = 0;
3187 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3188 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3189 fflp_reset(np);
3190 fflp_set_timings(np);
3191 err = fflp_disable_all_partitions(np);
3192 if (err) {
3193 netif_printk(np, probe, KERN_DEBUG, np->dev,
3194 "fflp_disable_all_partitions failed, err=%d\n",
3195 err);
3196 goto out;
3197 }
3198 }
3199
3200 err = tcam_early_init(np);
3201 if (err) {
3202 netif_printk(np, probe, KERN_DEBUG, np->dev,
3203 "tcam_early_init failed, err=%d\n", err);
3204 goto out;
3205 }
3206 fflp_llcsnap_enable(np, 1);
3207 fflp_errors_enable(np, 0);
3208 nw64(H1POLY, 0);
3209 nw64(H2POLY, 0);
3210
3211 err = tcam_flush_all(np);
3212 if (err) {
3213 netif_printk(np, probe, KERN_DEBUG, np->dev,
3214 "tcam_flush_all failed, err=%d\n", err);
3215 goto out;
3216 }
3217 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3218 err = fflp_hash_clear(np);
3219 if (err) {
3220 netif_printk(np, probe, KERN_DEBUG, np->dev,
3221 "fflp_hash_clear failed, err=%d\n",
3222 err);
3223 goto out;
3224 }
3225 }
3226
3227 vlan_tbl_clear(np);
3228
3229 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3230 }
3231 out:
3232 niu_unlock_parent(np, flags);
3233 return err;
3234 }
3235
3236 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3237 {
3238 if (class_code < CLASS_CODE_USER_PROG1 ||
3239 class_code > CLASS_CODE_SCTP_IPV6)
3240 return -EINVAL;
3241
3242 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3243 return 0;
3244 }
3245
3246 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3247 {
3248 if (class_code < CLASS_CODE_USER_PROG1 ||
3249 class_code > CLASS_CODE_SCTP_IPV6)
3250 return -EINVAL;
3251
3252 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3253 return 0;
3254 }
3255
3256 /* Entries for the ports are interleaved in the TCAM */
3257 static u16 tcam_get_index(struct niu *np, u16 idx)
3258 {
3259 /* One entry reserved for IP fragment rule */
3260 if (idx >= (np->clas.tcam_sz - 1))
3261 idx = 0;
3262 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3263 }
3264
3265 static u16 tcam_get_size(struct niu *np)
3266 {
3267 /* One entry reserved for IP fragment rule */
3268 return np->clas.tcam_sz - 1;
3269 }
3270
3271 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3272 {
3273 /* One entry reserved for IP fragment rule */
3274 return np->clas.tcam_valid_entries - 1;
3275 }
3276
3277 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3278 u32 offset, u32 size, u32 truesize)
3279 {
3280 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3281
3282 skb->len += size;
3283 skb->data_len += size;
3284 skb->truesize += truesize;
3285 }
3286
3287 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3288 {
3289 a >>= PAGE_SHIFT;
3290 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3291
3292 return a & (MAX_RBR_RING_SIZE - 1);
3293 }
3294
3295 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3296 struct page ***link)
3297 {
3298 unsigned int h = niu_hash_rxaddr(rp, addr);
3299 struct page *p, **pp;
3300
3301 addr &= PAGE_MASK;
3302 pp = &rp->rxhash[h];
3303 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3304 if (p->index == addr) {
3305 *link = pp;
3306 goto found;
3307 }
3308 }
3309 BUG();
3310
3311 found:
3312 return p;
3313 }
3314
3315 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3316 {
3317 unsigned int h = niu_hash_rxaddr(rp, base);
3318
3319 page->index = base;
3320 page->mapping = (struct address_space *) rp->rxhash[h];
3321 rp->rxhash[h] = page;
3322 }
3323
3324 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3325 gfp_t mask, int start_index)
3326 {
3327 struct page *page;
3328 u64 addr;
3329 int i;
3330
3331 page = alloc_page(mask);
3332 if (!page)
3333 return -ENOMEM;
3334
3335 addr = np->ops->map_page(np->device, page, 0,
3336 PAGE_SIZE, DMA_FROM_DEVICE);
3337 if (!addr) {
3338 __free_page(page);
3339 return -ENOMEM;
3340 }
3341
3342 niu_hash_page(rp, page, addr);
3343 if (rp->rbr_blocks_per_page > 1)
3344 page_ref_add(page, rp->rbr_blocks_per_page - 1);
3345
3346 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3347 __le32 *rbr = &rp->rbr[start_index + i];
3348
3349 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3350 addr += rp->rbr_block_size;
3351 }
3352
3353 return 0;
3354 }
3355
3356 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3357 {
3358 int index = rp->rbr_index;
3359
3360 rp->rbr_pending++;
3361 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3362 int err = niu_rbr_add_page(np, rp, mask, index);
3363
3364 if (unlikely(err)) {
3365 rp->rbr_pending--;
3366 return;
3367 }
3368
3369 rp->rbr_index += rp->rbr_blocks_per_page;
3370 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3371 if (rp->rbr_index == rp->rbr_table_size)
3372 rp->rbr_index = 0;
3373
3374 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3375 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3376 rp->rbr_pending = 0;
3377 }
3378 }
3379 }
3380
3381 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3382 {
3383 unsigned int index = rp->rcr_index;
3384 int num_rcr = 0;
3385
3386 rp->rx_dropped++;
3387 while (1) {
3388 struct page *page, **link;
3389 u64 addr, val;
3390 u32 rcr_size;
3391
3392 num_rcr++;
3393
3394 val = le64_to_cpup(&rp->rcr[index]);
3395 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3396 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3397 page = niu_find_rxpage(rp, addr, &link);
3398
3399 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3400 RCR_ENTRY_PKTBUFSZ_SHIFT];
3401 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3402 *link = (struct page *) page->mapping;
3403 np->ops->unmap_page(np->device, page->index,
3404 PAGE_SIZE, DMA_FROM_DEVICE);
3405 page->index = 0;
3406 page->mapping = NULL;
3407 __free_page(page);
3408 rp->rbr_refill_pending++;
3409 }
3410
3411 index = NEXT_RCR(rp, index);
3412 if (!(val & RCR_ENTRY_MULTI))
3413 break;
3414
3415 }
3416 rp->rcr_index = index;
3417
3418 return num_rcr;
3419 }
3420
3421 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3422 struct rx_ring_info *rp)
3423 {
3424 unsigned int index = rp->rcr_index;
3425 struct rx_pkt_hdr1 *rh;
3426 struct sk_buff *skb;
3427 int len, num_rcr;
3428
3429 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3430 if (unlikely(!skb))
3431 return niu_rx_pkt_ignore(np, rp);
3432
3433 num_rcr = 0;
3434 while (1) {
3435 struct page *page, **link;
3436 u32 rcr_size, append_size;
3437 u64 addr, val, off;
3438
3439 num_rcr++;
3440
3441 val = le64_to_cpup(&rp->rcr[index]);
3442
3443 len = (val & RCR_ENTRY_L2_LEN) >>
3444 RCR_ENTRY_L2_LEN_SHIFT;
3445 len -= ETH_FCS_LEN;
3446
3447 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3448 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3449 page = niu_find_rxpage(rp, addr, &link);
3450
3451 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3452 RCR_ENTRY_PKTBUFSZ_SHIFT];
3453
3454 off = addr & ~PAGE_MASK;
3455 append_size = rcr_size;
3456 if (num_rcr == 1) {
3457 int ptype;
3458
3459 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3460 if ((ptype == RCR_PKT_TYPE_TCP ||
3461 ptype == RCR_PKT_TYPE_UDP) &&
3462 !(val & (RCR_ENTRY_NOPORT |
3463 RCR_ENTRY_ERROR)))
3464 skb->ip_summed = CHECKSUM_UNNECESSARY;
3465 else
3466 skb_checksum_none_assert(skb);
3467 } else if (!(val & RCR_ENTRY_MULTI))
3468 append_size = len - skb->len;
3469
3470 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3471 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3472 *link = (struct page *) page->mapping;
3473 np->ops->unmap_page(np->device, page->index,
3474 PAGE_SIZE, DMA_FROM_DEVICE);
3475 page->index = 0;
3476 page->mapping = NULL;
3477 rp->rbr_refill_pending++;
3478 } else
3479 get_page(page);
3480
3481 index = NEXT_RCR(rp, index);
3482 if (!(val & RCR_ENTRY_MULTI))
3483 break;
3484
3485 }
3486 rp->rcr_index = index;
3487
3488 len += sizeof(*rh);
3489 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3490 __pskb_pull_tail(skb, len);
3491
3492 rh = (struct rx_pkt_hdr1 *) skb->data;
3493 if (np->dev->features & NETIF_F_RXHASH)
3494 skb_set_hash(skb,
3495 ((u32)rh->hashval2_0 << 24 |
3496 (u32)rh->hashval2_1 << 16 |
3497 (u32)rh->hashval1_1 << 8 |
3498 (u32)rh->hashval1_2 << 0),
3499 PKT_HASH_TYPE_L3);
3500 skb_pull(skb, sizeof(*rh));
3501
3502 rp->rx_packets++;
3503 rp->rx_bytes += skb->len;
3504
3505 skb->protocol = eth_type_trans(skb, np->dev);
3506 skb_record_rx_queue(skb, rp->rx_channel);
3507 napi_gro_receive(napi, skb);
3508
3509 return num_rcr;
3510 }
3511
3512 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3513 {
3514 int blocks_per_page = rp->rbr_blocks_per_page;
3515 int err, index = rp->rbr_index;
3516
3517 err = 0;
3518 while (index < (rp->rbr_table_size - blocks_per_page)) {
3519 err = niu_rbr_add_page(np, rp, mask, index);
3520 if (unlikely(err))
3521 break;
3522
3523 index += blocks_per_page;
3524 }
3525
3526 rp->rbr_index = index;
3527 return err;
3528 }
3529
3530 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3531 {
3532 int i;
3533
3534 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3535 struct page *page;
3536
3537 page = rp->rxhash[i];
3538 while (page) {
3539 struct page *next = (struct page *) page->mapping;
3540 u64 base = page->index;
3541
3542 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3543 DMA_FROM_DEVICE);
3544 page->index = 0;
3545 page->mapping = NULL;
3546
3547 __free_page(page);
3548
3549 page = next;
3550 }
3551 }
3552
3553 for (i = 0; i < rp->rbr_table_size; i++)
3554 rp->rbr[i] = cpu_to_le32(0);
3555 rp->rbr_index = 0;
3556 }
3557
3558 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3559 {
3560 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3561 struct sk_buff *skb = tb->skb;
3562 struct tx_pkt_hdr *tp;
3563 u64 tx_flags;
3564 int i, len;
3565
3566 tp = (struct tx_pkt_hdr *) skb->data;
3567 tx_flags = le64_to_cpup(&tp->flags);
3568
3569 rp->tx_packets++;
3570 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3571 ((tx_flags & TXHDR_PAD) / 2));
3572
3573 len = skb_headlen(skb);
3574 np->ops->unmap_single(np->device, tb->mapping,
3575 len, DMA_TO_DEVICE);
3576
3577 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3578 rp->mark_pending--;
3579
3580 tb->skb = NULL;
3581 do {
3582 idx = NEXT_TX(rp, idx);
3583 len -= MAX_TX_DESC_LEN;
3584 } while (len > 0);
3585
3586 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3587 tb = &rp->tx_buffs[idx];
3588 BUG_ON(tb->skb != NULL);
3589 np->ops->unmap_page(np->device, tb->mapping,
3590 skb_frag_size(&skb_shinfo(skb)->frags[i]),
3591 DMA_TO_DEVICE);
3592 idx = NEXT_TX(rp, idx);
3593 }
3594
3595 dev_kfree_skb(skb);
3596
3597 return idx;
3598 }
3599
3600 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3601
3602 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3603 {
3604 struct netdev_queue *txq;
3605 u16 pkt_cnt, tmp;
3606 int cons, index;
3607 u64 cs;
3608
3609 index = (rp - np->tx_rings);
3610 txq = netdev_get_tx_queue(np->dev, index);
3611
3612 cs = rp->tx_cs;
3613 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3614 goto out;
3615
3616 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3617 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3618 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3619
3620 rp->last_pkt_cnt = tmp;
3621
3622 cons = rp->cons;
3623
3624 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3625 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3626
3627 while (pkt_cnt--)
3628 cons = release_tx_packet(np, rp, cons);
3629
3630 rp->cons = cons;
3631 smp_mb();
3632
3633 out:
3634 if (unlikely(netif_tx_queue_stopped(txq) &&
3635 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3636 __netif_tx_lock(txq, smp_processor_id());
3637 if (netif_tx_queue_stopped(txq) &&
3638 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3639 netif_tx_wake_queue(txq);
3640 __netif_tx_unlock(txq);
3641 }
3642 }
3643
3644 static inline void niu_sync_rx_discard_stats(struct niu *np,
3645 struct rx_ring_info *rp,
3646 const int limit)
3647 {
3648 /* This elaborate scheme is needed for reading the RX discard
3649 * counters, as they are only 16-bit and can overflow quickly,
3650 * and because the overflow indication bit is not usable as
3651 * the counter value does not wrap, but remains at max value
3652 * 0xFFFF.
3653 *
3654 * In theory and in practice counters can be lost in between
3655 * reading nr64() and clearing the counter nw64(). For this
3656 * reason, the number of counter clearings nw64() is
3657 * limited/reduced though the limit parameter.
3658 */
3659 int rx_channel = rp->rx_channel;
3660 u32 misc, wred;
3661
3662 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3663 * following discard events: IPP (Input Port Process),
3664 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3665 * Block Ring) prefetch buffer is empty.
3666 */
3667 misc = nr64(RXMISC(rx_channel));
3668 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3669 nw64(RXMISC(rx_channel), 0);
3670 rp->rx_errors += misc & RXMISC_COUNT;
3671
3672 if (unlikely(misc & RXMISC_OFLOW))
3673 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3674 rx_channel);
3675
3676 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3677 "rx-%d: MISC drop=%u over=%u\n",
3678 rx_channel, misc, misc-limit);
3679 }
3680
3681 /* WRED (Weighted Random Early Discard) by hardware */
3682 wred = nr64(RED_DIS_CNT(rx_channel));
3683 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3684 nw64(RED_DIS_CNT(rx_channel), 0);
3685 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3686
3687 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3688 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3689
3690 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3691 "rx-%d: WRED drop=%u over=%u\n",
3692 rx_channel, wred, wred-limit);
3693 }
3694 }
3695
3696 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3697 struct rx_ring_info *rp, int budget)
3698 {
3699 int qlen, rcr_done = 0, work_done = 0;
3700 struct rxdma_mailbox *mbox = rp->mbox;
3701 u64 stat;
3702
3703 #if 1
3704 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3705 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3706 #else
3707 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3708 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3709 #endif
3710 mbox->rx_dma_ctl_stat = 0;
3711 mbox->rcrstat_a = 0;
3712
3713 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3714 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3715 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3716
3717 rcr_done = work_done = 0;
3718 qlen = min(qlen, budget);
3719 while (work_done < qlen) {
3720 rcr_done += niu_process_rx_pkt(napi, np, rp);
3721 work_done++;
3722 }
3723
3724 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3725 unsigned int i;
3726
3727 for (i = 0; i < rp->rbr_refill_pending; i++)
3728 niu_rbr_refill(np, rp, GFP_ATOMIC);
3729 rp->rbr_refill_pending = 0;
3730 }
3731
3732 stat = (RX_DMA_CTL_STAT_MEX |
3733 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3734 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3735
3736 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3737
3738 /* Only sync discards stats when qlen indicate potential for drops */
3739 if (qlen > 10)
3740 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3741
3742 return work_done;
3743 }
3744
3745 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3746 {
3747 u64 v0 = lp->v0;
3748 u32 tx_vec = (v0 >> 32);
3749 u32 rx_vec = (v0 & 0xffffffff);
3750 int i, work_done = 0;
3751
3752 netif_printk(np, intr, KERN_DEBUG, np->dev,
3753 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3754
3755 for (i = 0; i < np->num_tx_rings; i++) {
3756 struct tx_ring_info *rp = &np->tx_rings[i];
3757 if (tx_vec & (1 << rp->tx_channel))
3758 niu_tx_work(np, rp);
3759 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3760 }
3761
3762 for (i = 0; i < np->num_rx_rings; i++) {
3763 struct rx_ring_info *rp = &np->rx_rings[i];
3764
3765 if (rx_vec & (1 << rp->rx_channel)) {
3766 int this_work_done;
3767
3768 this_work_done = niu_rx_work(&lp->napi, np, rp,
3769 budget);
3770
3771 budget -= this_work_done;
3772 work_done += this_work_done;
3773 }
3774 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3775 }
3776
3777 return work_done;
3778 }
3779
3780 static int niu_poll(struct napi_struct *napi, int budget)
3781 {
3782 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3783 struct niu *np = lp->np;
3784 int work_done;
3785
3786 work_done = niu_poll_core(np, lp, budget);
3787
3788 if (work_done < budget) {
3789 napi_complete(napi);
3790 niu_ldg_rearm(np, lp, 1);
3791 }
3792 return work_done;
3793 }
3794
3795 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3796 u64 stat)
3797 {
3798 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3799
3800 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3801 pr_cont("RBR_TMOUT ");
3802 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3803 pr_cont("RSP_CNT ");
3804 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3805 pr_cont("BYTE_EN_BUS ");
3806 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3807 pr_cont("RSP_DAT ");
3808 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3809 pr_cont("RCR_ACK ");
3810 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3811 pr_cont("RCR_SHA_PAR ");
3812 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3813 pr_cont("RBR_PRE_PAR ");
3814 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3815 pr_cont("CONFIG ");
3816 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3817 pr_cont("RCRINCON ");
3818 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3819 pr_cont("RCRFULL ");
3820 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3821 pr_cont("RBRFULL ");
3822 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3823 pr_cont("RBRLOGPAGE ");
3824 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3825 pr_cont("CFIGLOGPAGE ");
3826 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3827 pr_cont("DC_FIDO ");
3828
3829 pr_cont(")\n");
3830 }
3831
3832 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3833 {
3834 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3835 int err = 0;
3836
3837
3838 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3839 RX_DMA_CTL_STAT_PORT_FATAL))
3840 err = -EINVAL;
3841
3842 if (err) {
3843 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3844 rp->rx_channel,
3845 (unsigned long long) stat);
3846
3847 niu_log_rxchan_errors(np, rp, stat);
3848 }
3849
3850 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3851 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3852
3853 return err;
3854 }
3855
3856 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3857 u64 cs)
3858 {
3859 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3860
3861 if (cs & TX_CS_MBOX_ERR)
3862 pr_cont("MBOX ");
3863 if (cs & TX_CS_PKT_SIZE_ERR)
3864 pr_cont("PKT_SIZE ");
3865 if (cs & TX_CS_TX_RING_OFLOW)
3866 pr_cont("TX_RING_OFLOW ");
3867 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3868 pr_cont("PREF_BUF_PAR ");
3869 if (cs & TX_CS_NACK_PREF)
3870 pr_cont("NACK_PREF ");
3871 if (cs & TX_CS_NACK_PKT_RD)
3872 pr_cont("NACK_PKT_RD ");
3873 if (cs & TX_CS_CONF_PART_ERR)
3874 pr_cont("CONF_PART ");
3875 if (cs & TX_CS_PKT_PRT_ERR)
3876 pr_cont("PKT_PTR ");
3877
3878 pr_cont(")\n");
3879 }
3880
3881 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3882 {
3883 u64 cs, logh, logl;
3884
3885 cs = nr64(TX_CS(rp->tx_channel));
3886 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3887 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3888
3889 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3890 rp->tx_channel,
3891 (unsigned long long)cs,
3892 (unsigned long long)logh,
3893 (unsigned long long)logl);
3894
3895 niu_log_txchan_errors(np, rp, cs);
3896
3897 return -ENODEV;
3898 }
3899
3900 static int niu_mif_interrupt(struct niu *np)
3901 {
3902 u64 mif_status = nr64(MIF_STATUS);
3903 int phy_mdint = 0;
3904
3905 if (np->flags & NIU_FLAGS_XMAC) {
3906 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3907
3908 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3909 phy_mdint = 1;
3910 }
3911
3912 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3913 (unsigned long long)mif_status, phy_mdint);
3914
3915 return -ENODEV;
3916 }
3917
3918 static void niu_xmac_interrupt(struct niu *np)
3919 {
3920 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3921 u64 val;
3922
3923 val = nr64_mac(XTXMAC_STATUS);
3924 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3925 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3926 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3927 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3928 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3929 mp->tx_fifo_errors++;
3930 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3931 mp->tx_overflow_errors++;
3932 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3933 mp->tx_max_pkt_size_errors++;
3934 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3935 mp->tx_underflow_errors++;
3936
3937 val = nr64_mac(XRXMAC_STATUS);
3938 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3939 mp->rx_local_faults++;
3940 if (val & XRXMAC_STATUS_RFLT_DET)
3941 mp->rx_remote_faults++;
3942 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3943 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3944 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3945 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3946 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3947 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3948 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3949 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3950 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3951 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3952 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3953 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3954 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3955 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3956 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3957 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3958 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3959 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3960 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3961 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3962 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3963 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3964 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3965 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3966 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3967 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3968 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3969 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3970 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3971 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3972 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3973 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3974 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3975 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3976 if (val & XRXMAC_STATUS_RXUFLOW)
3977 mp->rx_underflows++;
3978 if (val & XRXMAC_STATUS_RXOFLOW)
3979 mp->rx_overflows++;
3980
3981 val = nr64_mac(XMAC_FC_STAT);
3982 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3983 mp->pause_off_state++;
3984 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3985 mp->pause_on_state++;
3986 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3987 mp->pause_received++;
3988 }
3989
3990 static void niu_bmac_interrupt(struct niu *np)
3991 {
3992 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3993 u64 val;
3994
3995 val = nr64_mac(BTXMAC_STATUS);
3996 if (val & BTXMAC_STATUS_UNDERRUN)
3997 mp->tx_underflow_errors++;
3998 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3999 mp->tx_max_pkt_size_errors++;
4000 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4001 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4002 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4003 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4004
4005 val = nr64_mac(BRXMAC_STATUS);
4006 if (val & BRXMAC_STATUS_OVERFLOW)
4007 mp->rx_overflows++;
4008 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4009 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4010 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4011 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4012 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4013 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4014 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4015 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4016
4017 val = nr64_mac(BMAC_CTRL_STATUS);
4018 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4019 mp->pause_off_state++;
4020 if (val & BMAC_CTRL_STATUS_PAUSE)
4021 mp->pause_on_state++;
4022 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4023 mp->pause_received++;
4024 }
4025
4026 static int niu_mac_interrupt(struct niu *np)
4027 {
4028 if (np->flags & NIU_FLAGS_XMAC)
4029 niu_xmac_interrupt(np);
4030 else
4031 niu_bmac_interrupt(np);
4032
4033 return 0;
4034 }
4035
4036 static void niu_log_device_error(struct niu *np, u64 stat)
4037 {
4038 netdev_err(np->dev, "Core device errors ( ");
4039
4040 if (stat & SYS_ERR_MASK_META2)
4041 pr_cont("META2 ");
4042 if (stat & SYS_ERR_MASK_META1)
4043 pr_cont("META1 ");
4044 if (stat & SYS_ERR_MASK_PEU)
4045 pr_cont("PEU ");
4046 if (stat & SYS_ERR_MASK_TXC)
4047 pr_cont("TXC ");
4048 if (stat & SYS_ERR_MASK_RDMC)
4049 pr_cont("RDMC ");
4050 if (stat & SYS_ERR_MASK_TDMC)
4051 pr_cont("TDMC ");
4052 if (stat & SYS_ERR_MASK_ZCP)
4053 pr_cont("ZCP ");
4054 if (stat & SYS_ERR_MASK_FFLP)
4055 pr_cont("FFLP ");
4056 if (stat & SYS_ERR_MASK_IPP)
4057 pr_cont("IPP ");
4058 if (stat & SYS_ERR_MASK_MAC)
4059 pr_cont("MAC ");
4060 if (stat & SYS_ERR_MASK_SMX)
4061 pr_cont("SMX ");
4062
4063 pr_cont(")\n");
4064 }
4065
4066 static int niu_device_error(struct niu *np)
4067 {
4068 u64 stat = nr64(SYS_ERR_STAT);
4069
4070 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4071 (unsigned long long)stat);
4072
4073 niu_log_device_error(np, stat);
4074
4075 return -ENODEV;
4076 }
4077
4078 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4079 u64 v0, u64 v1, u64 v2)
4080 {
4081
4082 int i, err = 0;
4083
4084 lp->v0 = v0;
4085 lp->v1 = v1;
4086 lp->v2 = v2;
4087
4088 if (v1 & 0x00000000ffffffffULL) {
4089 u32 rx_vec = (v1 & 0xffffffff);
4090
4091 for (i = 0; i < np->num_rx_rings; i++) {
4092 struct rx_ring_info *rp = &np->rx_rings[i];
4093
4094 if (rx_vec & (1 << rp->rx_channel)) {
4095 int r = niu_rx_error(np, rp);
4096 if (r) {
4097 err = r;
4098 } else {
4099 if (!v0)
4100 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4101 RX_DMA_CTL_STAT_MEX);
4102 }
4103 }
4104 }
4105 }
4106 if (v1 & 0x7fffffff00000000ULL) {
4107 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4108
4109 for (i = 0; i < np->num_tx_rings; i++) {
4110 struct tx_ring_info *rp = &np->tx_rings[i];
4111
4112 if (tx_vec & (1 << rp->tx_channel)) {
4113 int r = niu_tx_error(np, rp);
4114 if (r)
4115 err = r;
4116 }
4117 }
4118 }
4119 if ((v0 | v1) & 0x8000000000000000ULL) {
4120 int r = niu_mif_interrupt(np);
4121 if (r)
4122 err = r;
4123 }
4124 if (v2) {
4125 if (v2 & 0x01ef) {
4126 int r = niu_mac_interrupt(np);
4127 if (r)
4128 err = r;
4129 }
4130 if (v2 & 0x0210) {
4131 int r = niu_device_error(np);
4132 if (r)
4133 err = r;
4134 }
4135 }
4136
4137 if (err)
4138 niu_enable_interrupts(np, 0);
4139
4140 return err;
4141 }
4142
4143 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4144 int ldn)
4145 {
4146 struct rxdma_mailbox *mbox = rp->mbox;
4147 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4148
4149 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4150 RX_DMA_CTL_STAT_RCRTO);
4151 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4152
4153 netif_printk(np, intr, KERN_DEBUG, np->dev,
4154 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4155 }
4156
4157 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4158 int ldn)
4159 {
4160 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4161
4162 netif_printk(np, intr, KERN_DEBUG, np->dev,
4163 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4164 }
4165
4166 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4167 {
4168 struct niu_parent *parent = np->parent;
4169 u32 rx_vec, tx_vec;
4170 int i;
4171
4172 tx_vec = (v0 >> 32);
4173 rx_vec = (v0 & 0xffffffff);
4174
4175 for (i = 0; i < np->num_rx_rings; i++) {
4176 struct rx_ring_info *rp = &np->rx_rings[i];
4177 int ldn = LDN_RXDMA(rp->rx_channel);
4178
4179 if (parent->ldg_map[ldn] != ldg)
4180 continue;
4181
4182 nw64(LD_IM0(ldn), LD_IM0_MASK);
4183 if (rx_vec & (1 << rp->rx_channel))
4184 niu_rxchan_intr(np, rp, ldn);
4185 }
4186
4187 for (i = 0; i < np->num_tx_rings; i++) {
4188 struct tx_ring_info *rp = &np->tx_rings[i];
4189 int ldn = LDN_TXDMA(rp->tx_channel);
4190
4191 if (parent->ldg_map[ldn] != ldg)
4192 continue;
4193
4194 nw64(LD_IM0(ldn), LD_IM0_MASK);
4195 if (tx_vec & (1 << rp->tx_channel))
4196 niu_txchan_intr(np, rp, ldn);
4197 }
4198 }
4199
4200 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4201 u64 v0, u64 v1, u64 v2)
4202 {
4203 if (likely(napi_schedule_prep(&lp->napi))) {
4204 lp->v0 = v0;
4205 lp->v1 = v1;
4206 lp->v2 = v2;
4207 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4208 __napi_schedule(&lp->napi);
4209 }
4210 }
4211
4212 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4213 {
4214 struct niu_ldg *lp = dev_id;
4215 struct niu *np = lp->np;
4216 int ldg = lp->ldg_num;
4217 unsigned long flags;
4218 u64 v0, v1, v2;
4219
4220 if (netif_msg_intr(np))
4221 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4222 __func__, lp, ldg);
4223
4224 spin_lock_irqsave(&np->lock, flags);
4225
4226 v0 = nr64(LDSV0(ldg));
4227 v1 = nr64(LDSV1(ldg));
4228 v2 = nr64(LDSV2(ldg));
4229
4230 if (netif_msg_intr(np))
4231 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4232 (unsigned long long) v0,
4233 (unsigned long long) v1,
4234 (unsigned long long) v2);
4235
4236 if (unlikely(!v0 && !v1 && !v2)) {
4237 spin_unlock_irqrestore(&np->lock, flags);
4238 return IRQ_NONE;
4239 }
4240
4241 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4242 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4243 if (err)
4244 goto out;
4245 }
4246 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4247 niu_schedule_napi(np, lp, v0, v1, v2);
4248 else
4249 niu_ldg_rearm(np, lp, 1);
4250 out:
4251 spin_unlock_irqrestore(&np->lock, flags);
4252
4253 return IRQ_HANDLED;
4254 }
4255
4256 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4257 {
4258 if (rp->mbox) {
4259 np->ops->free_coherent(np->device,
4260 sizeof(struct rxdma_mailbox),
4261 rp->mbox, rp->mbox_dma);
4262 rp->mbox = NULL;
4263 }
4264 if (rp->rcr) {
4265 np->ops->free_coherent(np->device,
4266 MAX_RCR_RING_SIZE * sizeof(__le64),
4267 rp->rcr, rp->rcr_dma);
4268 rp->rcr = NULL;
4269 rp->rcr_table_size = 0;
4270 rp->rcr_index = 0;
4271 }
4272 if (rp->rbr) {
4273 niu_rbr_free(np, rp);
4274
4275 np->ops->free_coherent(np->device,
4276 MAX_RBR_RING_SIZE * sizeof(__le32),
4277 rp->rbr, rp->rbr_dma);
4278 rp->rbr = NULL;
4279 rp->rbr_table_size = 0;
4280 rp->rbr_index = 0;
4281 }
4282 kfree(rp->rxhash);
4283 rp->rxhash = NULL;
4284 }
4285
4286 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4287 {
4288 if (rp->mbox) {
4289 np->ops->free_coherent(np->device,
4290 sizeof(struct txdma_mailbox),
4291 rp->mbox, rp->mbox_dma);
4292 rp->mbox = NULL;
4293 }
4294 if (rp->descr) {
4295 int i;
4296
4297 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4298 if (rp->tx_buffs[i].skb)
4299 (void) release_tx_packet(np, rp, i);
4300 }
4301
4302 np->ops->free_coherent(np->device,
4303 MAX_TX_RING_SIZE * sizeof(__le64),
4304 rp->descr, rp->descr_dma);
4305 rp->descr = NULL;
4306 rp->pending = 0;
4307 rp->prod = 0;
4308 rp->cons = 0;
4309 rp->wrap_bit = 0;
4310 }
4311 }
4312
4313 static void niu_free_channels(struct niu *np)
4314 {
4315 int i;
4316
4317 if (np->rx_rings) {
4318 for (i = 0; i < np->num_rx_rings; i++) {
4319 struct rx_ring_info *rp = &np->rx_rings[i];
4320
4321 niu_free_rx_ring_info(np, rp);
4322 }
4323 kfree(np->rx_rings);
4324 np->rx_rings = NULL;
4325 np->num_rx_rings = 0;
4326 }
4327
4328 if (np->tx_rings) {
4329 for (i = 0; i < np->num_tx_rings; i++) {
4330 struct tx_ring_info *rp = &np->tx_rings[i];
4331
4332 niu_free_tx_ring_info(np, rp);
4333 }
4334 kfree(np->tx_rings);
4335 np->tx_rings = NULL;
4336 np->num_tx_rings = 0;
4337 }
4338 }
4339
4340 static int niu_alloc_rx_ring_info(struct niu *np,
4341 struct rx_ring_info *rp)
4342 {
4343 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4344
4345 rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
4346 GFP_KERNEL);
4347 if (!rp->rxhash)
4348 return -ENOMEM;
4349
4350 rp->mbox = np->ops->alloc_coherent(np->device,
4351 sizeof(struct rxdma_mailbox),
4352 &rp->mbox_dma, GFP_KERNEL);
4353 if (!rp->mbox)
4354 return -ENOMEM;
4355 if ((unsigned long)rp->mbox & (64UL - 1)) {
4356 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4357 rp->mbox);
4358 return -EINVAL;
4359 }
4360
4361 rp->rcr = np->ops->alloc_coherent(np->device,
4362 MAX_RCR_RING_SIZE * sizeof(__le64),
4363 &rp->rcr_dma, GFP_KERNEL);
4364 if (!rp->rcr)
4365 return -ENOMEM;
4366 if ((unsigned long)rp->rcr & (64UL - 1)) {
4367 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4368 rp->rcr);
4369 return -EINVAL;
4370 }
4371 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4372 rp->rcr_index = 0;
4373
4374 rp->rbr = np->ops->alloc_coherent(np->device,
4375 MAX_RBR_RING_SIZE * sizeof(__le32),
4376 &rp->rbr_dma, GFP_KERNEL);
4377 if (!rp->rbr)
4378 return -ENOMEM;
4379 if ((unsigned long)rp->rbr & (64UL - 1)) {
4380 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4381 rp->rbr);
4382 return -EINVAL;
4383 }
4384 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4385 rp->rbr_index = 0;
4386 rp->rbr_pending = 0;
4387
4388 return 0;
4389 }
4390
4391 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4392 {
4393 int mtu = np->dev->mtu;
4394
4395 /* These values are recommended by the HW designers for fair
4396 * utilization of DRR amongst the rings.
4397 */
4398 rp->max_burst = mtu + 32;
4399 if (rp->max_burst > 4096)
4400 rp->max_burst = 4096;
4401 }
4402
4403 static int niu_alloc_tx_ring_info(struct niu *np,
4404 struct tx_ring_info *rp)
4405 {
4406 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4407
4408 rp->mbox = np->ops->alloc_coherent(np->device,
4409 sizeof(struct txdma_mailbox),
4410 &rp->mbox_dma, GFP_KERNEL);
4411 if (!rp->mbox)
4412 return -ENOMEM;
4413 if ((unsigned long)rp->mbox & (64UL - 1)) {
4414 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4415 rp->mbox);
4416 return -EINVAL;
4417 }
4418
4419 rp->descr = np->ops->alloc_coherent(np->device,
4420 MAX_TX_RING_SIZE * sizeof(__le64),
4421 &rp->descr_dma, GFP_KERNEL);
4422 if (!rp->descr)
4423 return -ENOMEM;
4424 if ((unsigned long)rp->descr & (64UL - 1)) {
4425 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4426 rp->descr);
4427 return -EINVAL;
4428 }
4429
4430 rp->pending = MAX_TX_RING_SIZE;
4431 rp->prod = 0;
4432 rp->cons = 0;
4433 rp->wrap_bit = 0;
4434
4435 /* XXX make these configurable... XXX */
4436 rp->mark_freq = rp->pending / 4;
4437
4438 niu_set_max_burst(np, rp);
4439
4440 return 0;
4441 }
4442
4443 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4444 {
4445 u16 bss;
4446
4447 bss = min(PAGE_SHIFT, 15);
4448
4449 rp->rbr_block_size = 1 << bss;
4450 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4451
4452 rp->rbr_sizes[0] = 256;
4453 rp->rbr_sizes[1] = 1024;
4454 if (np->dev->mtu > ETH_DATA_LEN) {
4455 switch (PAGE_SIZE) {
4456 case 4 * 1024:
4457 rp->rbr_sizes[2] = 4096;
4458 break;
4459
4460 default:
4461 rp->rbr_sizes[2] = 8192;
4462 break;
4463 }
4464 } else {
4465 rp->rbr_sizes[2] = 2048;
4466 }
4467 rp->rbr_sizes[3] = rp->rbr_block_size;
4468 }
4469
4470 static int niu_alloc_channels(struct niu *np)
4471 {
4472 struct niu_parent *parent = np->parent;
4473 int first_rx_channel, first_tx_channel;
4474 int num_rx_rings, num_tx_rings;
4475 struct rx_ring_info *rx_rings;
4476 struct tx_ring_info *tx_rings;
4477 int i, port, err;
4478
4479 port = np->port;
4480 first_rx_channel = first_tx_channel = 0;
4481 for (i = 0; i < port; i++) {
4482 first_rx_channel += parent->rxchan_per_port[i];
4483 first_tx_channel += parent->txchan_per_port[i];
4484 }
4485
4486 num_rx_rings = parent->rxchan_per_port[port];
4487 num_tx_rings = parent->txchan_per_port[port];
4488
4489 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4490 GFP_KERNEL);
4491 err = -ENOMEM;
4492 if (!rx_rings)
4493 goto out_err;
4494
4495 np->num_rx_rings = num_rx_rings;
4496 smp_wmb();
4497 np->rx_rings = rx_rings;
4498
4499 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4500
4501 for (i = 0; i < np->num_rx_rings; i++) {
4502 struct rx_ring_info *rp = &np->rx_rings[i];
4503
4504 rp->np = np;
4505 rp->rx_channel = first_rx_channel + i;
4506
4507 err = niu_alloc_rx_ring_info(np, rp);
4508 if (err)
4509 goto out_err;
4510
4511 niu_size_rbr(np, rp);
4512
4513 /* XXX better defaults, configurable, etc... XXX */
4514 rp->nonsyn_window = 64;
4515 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4516 rp->syn_window = 64;
4517 rp->syn_threshold = rp->rcr_table_size - 64;
4518 rp->rcr_pkt_threshold = 16;
4519 rp->rcr_timeout = 8;
4520 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4521 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4522 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4523
4524 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4525 if (err)
4526 return err;
4527 }
4528
4529 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4530 GFP_KERNEL);
4531 err = -ENOMEM;
4532 if (!tx_rings)
4533 goto out_err;
4534
4535 np->num_tx_rings = num_tx_rings;
4536 smp_wmb();
4537 np->tx_rings = tx_rings;
4538
4539 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4540
4541 for (i = 0; i < np->num_tx_rings; i++) {
4542 struct tx_ring_info *rp = &np->tx_rings[i];
4543
4544 rp->np = np;
4545 rp->tx_channel = first_tx_channel + i;
4546
4547 err = niu_alloc_tx_ring_info(np, rp);
4548 if (err)
4549 goto out_err;
4550 }
4551
4552 return 0;
4553
4554 out_err:
4555 niu_free_channels(np);
4556 return err;
4557 }
4558
4559 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4560 {
4561 int limit = 1000;
4562
4563 while (--limit > 0) {
4564 u64 val = nr64(TX_CS(channel));
4565 if (val & TX_CS_SNG_STATE)
4566 return 0;
4567 }
4568 return -ENODEV;
4569 }
4570
4571 static int niu_tx_channel_stop(struct niu *np, int channel)
4572 {
4573 u64 val = nr64(TX_CS(channel));
4574
4575 val |= TX_CS_STOP_N_GO;
4576 nw64(TX_CS(channel), val);
4577
4578 return niu_tx_cs_sng_poll(np, channel);
4579 }
4580
4581 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4582 {
4583 int limit = 1000;
4584
4585 while (--limit > 0) {
4586 u64 val = nr64(TX_CS(channel));
4587 if (!(val & TX_CS_RST))
4588 return 0;
4589 }
4590 return -ENODEV;
4591 }
4592
4593 static int niu_tx_channel_reset(struct niu *np, int channel)
4594 {
4595 u64 val = nr64(TX_CS(channel));
4596 int err;
4597
4598 val |= TX_CS_RST;
4599 nw64(TX_CS(channel), val);
4600
4601 err = niu_tx_cs_reset_poll(np, channel);
4602 if (!err)
4603 nw64(TX_RING_KICK(channel), 0);
4604
4605 return err;
4606 }
4607
4608 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4609 {
4610 u64 val;
4611
4612 nw64(TX_LOG_MASK1(channel), 0);
4613 nw64(TX_LOG_VAL1(channel), 0);
4614 nw64(TX_LOG_MASK2(channel), 0);
4615 nw64(TX_LOG_VAL2(channel), 0);
4616 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4617 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4618 nw64(TX_LOG_PAGE_HDL(channel), 0);
4619
4620 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4621 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4622 nw64(TX_LOG_PAGE_VLD(channel), val);
4623
4624 /* XXX TXDMA 32bit mode? XXX */
4625
4626 return 0;
4627 }
4628
4629 static void niu_txc_enable_port(struct niu *np, int on)
4630 {
4631 unsigned long flags;
4632 u64 val, mask;
4633
4634 niu_lock_parent(np, flags);
4635 val = nr64(TXC_CONTROL);
4636 mask = (u64)1 << np->port;
4637 if (on) {
4638 val |= TXC_CONTROL_ENABLE | mask;
4639 } else {
4640 val &= ~mask;
4641 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4642 val &= ~TXC_CONTROL_ENABLE;
4643 }
4644 nw64(TXC_CONTROL, val);
4645 niu_unlock_parent(np, flags);
4646 }
4647
4648 static void niu_txc_set_imask(struct niu *np, u64 imask)
4649 {
4650 unsigned long flags;
4651 u64 val;
4652
4653 niu_lock_parent(np, flags);
4654 val = nr64(TXC_INT_MASK);
4655 val &= ~TXC_INT_MASK_VAL(np->port);
4656 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4657 niu_unlock_parent(np, flags);
4658 }
4659
4660 static void niu_txc_port_dma_enable(struct niu *np, int on)
4661 {
4662 u64 val = 0;
4663
4664 if (on) {
4665 int i;
4666
4667 for (i = 0; i < np->num_tx_rings; i++)
4668 val |= (1 << np->tx_rings[i].tx_channel);
4669 }
4670 nw64(TXC_PORT_DMA(np->port), val);
4671 }
4672
4673 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4674 {
4675 int err, channel = rp->tx_channel;
4676 u64 val, ring_len;
4677
4678 err = niu_tx_channel_stop(np, channel);
4679 if (err)
4680 return err;
4681
4682 err = niu_tx_channel_reset(np, channel);
4683 if (err)
4684 return err;
4685
4686 err = niu_tx_channel_lpage_init(np, channel);
4687 if (err)
4688 return err;
4689
4690 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4691 nw64(TX_ENT_MSK(channel), 0);
4692
4693 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4694 TX_RNG_CFIG_STADDR)) {
4695 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4696 channel, (unsigned long long)rp->descr_dma);
4697 return -EINVAL;
4698 }
4699
4700 /* The length field in TX_RNG_CFIG is measured in 64-byte
4701 * blocks. rp->pending is the number of TX descriptors in
4702 * our ring, 8 bytes each, thus we divide by 8 bytes more
4703 * to get the proper value the chip wants.
4704 */
4705 ring_len = (rp->pending / 8);
4706
4707 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4708 rp->descr_dma);
4709 nw64(TX_RNG_CFIG(channel), val);
4710
4711 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4712 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4713 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4714 channel, (unsigned long long)rp->mbox_dma);
4715 return -EINVAL;
4716 }
4717 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4718 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4719
4720 nw64(TX_CS(channel), 0);
4721
4722 rp->last_pkt_cnt = 0;
4723
4724 return 0;
4725 }
4726
4727 static void niu_init_rdc_groups(struct niu *np)
4728 {
4729 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4730 int i, first_table_num = tp->first_table_num;
4731
4732 for (i = 0; i < tp->num_tables; i++) {
4733 struct rdc_table *tbl = &tp->tables[i];
4734 int this_table = first_table_num + i;
4735 int slot;
4736
4737 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4738 nw64(RDC_TBL(this_table, slot),
4739 tbl->rxdma_channel[slot]);
4740 }
4741
4742 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4743 }
4744
4745 static void niu_init_drr_weight(struct niu *np)
4746 {
4747 int type = phy_decode(np->parent->port_phy, np->port);
4748 u64 val;
4749
4750 switch (type) {
4751 case PORT_TYPE_10G:
4752 val = PT_DRR_WEIGHT_DEFAULT_10G;
4753 break;
4754
4755 case PORT_TYPE_1G:
4756 default:
4757 val = PT_DRR_WEIGHT_DEFAULT_1G;
4758 break;
4759 }
4760 nw64(PT_DRR_WT(np->port), val);
4761 }
4762
4763 static int niu_init_hostinfo(struct niu *np)
4764 {
4765 struct niu_parent *parent = np->parent;
4766 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4767 int i, err, num_alt = niu_num_alt_addr(np);
4768 int first_rdc_table = tp->first_table_num;
4769
4770 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4771 if (err)
4772 return err;
4773
4774 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4775 if (err)
4776 return err;
4777
4778 for (i = 0; i < num_alt; i++) {
4779 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4780 if (err)
4781 return err;
4782 }
4783
4784 return 0;
4785 }
4786
4787 static int niu_rx_channel_reset(struct niu *np, int channel)
4788 {
4789 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4790 RXDMA_CFIG1_RST, 1000, 10,
4791 "RXDMA_CFIG1");
4792 }
4793
4794 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4795 {
4796 u64 val;
4797
4798 nw64(RX_LOG_MASK1(channel), 0);
4799 nw64(RX_LOG_VAL1(channel), 0);
4800 nw64(RX_LOG_MASK2(channel), 0);
4801 nw64(RX_LOG_VAL2(channel), 0);
4802 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4803 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4804 nw64(RX_LOG_PAGE_HDL(channel), 0);
4805
4806 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4807 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4808 nw64(RX_LOG_PAGE_VLD(channel), val);
4809
4810 return 0;
4811 }
4812
4813 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4814 {
4815 u64 val;
4816
4817 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4818 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4819 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4820 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4821 nw64(RDC_RED_PARA(rp->rx_channel), val);
4822 }
4823
4824 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4825 {
4826 u64 val = 0;
4827
4828 *ret = 0;
4829 switch (rp->rbr_block_size) {
4830 case 4 * 1024:
4831 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4832 break;
4833 case 8 * 1024:
4834 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4835 break;
4836 case 16 * 1024:
4837 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4838 break;
4839 case 32 * 1024:
4840 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4841 break;
4842 default:
4843 return -EINVAL;
4844 }
4845 val |= RBR_CFIG_B_VLD2;
4846 switch (rp->rbr_sizes[2]) {
4847 case 2 * 1024:
4848 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4849 break;
4850 case 4 * 1024:
4851 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4852 break;
4853 case 8 * 1024:
4854 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4855 break;
4856 case 16 * 1024:
4857 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4858 break;
4859
4860 default:
4861 return -EINVAL;
4862 }
4863 val |= RBR_CFIG_B_VLD1;
4864 switch (rp->rbr_sizes[1]) {
4865 case 1 * 1024:
4866 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4867 break;
4868 case 2 * 1024:
4869 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4870 break;
4871 case 4 * 1024:
4872 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4873 break;
4874 case 8 * 1024:
4875 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4876 break;
4877
4878 default:
4879 return -EINVAL;
4880 }
4881 val |= RBR_CFIG_B_VLD0;
4882 switch (rp->rbr_sizes[0]) {
4883 case 256:
4884 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4885 break;
4886 case 512:
4887 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4888 break;
4889 case 1 * 1024:
4890 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4891 break;
4892 case 2 * 1024:
4893 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4894 break;
4895
4896 default:
4897 return -EINVAL;
4898 }
4899
4900 *ret = val;
4901 return 0;
4902 }
4903
4904 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4905 {
4906 u64 val = nr64(RXDMA_CFIG1(channel));
4907 int limit;
4908
4909 if (on)
4910 val |= RXDMA_CFIG1_EN;
4911 else
4912 val &= ~RXDMA_CFIG1_EN;
4913 nw64(RXDMA_CFIG1(channel), val);
4914
4915 limit = 1000;
4916 while (--limit > 0) {
4917 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4918 break;
4919 udelay(10);
4920 }
4921 if (limit <= 0)
4922 return -ENODEV;
4923 return 0;
4924 }
4925
4926 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4927 {
4928 int err, channel = rp->rx_channel;
4929 u64 val;
4930
4931 err = niu_rx_channel_reset(np, channel);
4932 if (err)
4933 return err;
4934
4935 err = niu_rx_channel_lpage_init(np, channel);
4936 if (err)
4937 return err;
4938
4939 niu_rx_channel_wred_init(np, rp);
4940
4941 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4942 nw64(RX_DMA_CTL_STAT(channel),
4943 (RX_DMA_CTL_STAT_MEX |
4944 RX_DMA_CTL_STAT_RCRTHRES |
4945 RX_DMA_CTL_STAT_RCRTO |
4946 RX_DMA_CTL_STAT_RBR_EMPTY));
4947 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4948 nw64(RXDMA_CFIG2(channel),
4949 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4950 RXDMA_CFIG2_FULL_HDR));
4951 nw64(RBR_CFIG_A(channel),
4952 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4953 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4954 err = niu_compute_rbr_cfig_b(rp, &val);
4955 if (err)
4956 return err;
4957 nw64(RBR_CFIG_B(channel), val);
4958 nw64(RCRCFIG_A(channel),
4959 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4960 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4961 nw64(RCRCFIG_B(channel),
4962 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4963 RCRCFIG_B_ENTOUT |
4964 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4965
4966 err = niu_enable_rx_channel(np, channel, 1);
4967 if (err)
4968 return err;
4969
4970 nw64(RBR_KICK(channel), rp->rbr_index);
4971
4972 val = nr64(RX_DMA_CTL_STAT(channel));
4973 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4974 nw64(RX_DMA_CTL_STAT(channel), val);
4975
4976 return 0;
4977 }
4978
4979 static int niu_init_rx_channels(struct niu *np)
4980 {
4981 unsigned long flags;
4982 u64 seed = jiffies_64;
4983 int err, i;
4984
4985 niu_lock_parent(np, flags);
4986 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4987 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4988 niu_unlock_parent(np, flags);
4989
4990 /* XXX RXDMA 32bit mode? XXX */
4991
4992 niu_init_rdc_groups(np);
4993 niu_init_drr_weight(np);
4994
4995 err = niu_init_hostinfo(np);
4996 if (err)
4997 return err;
4998
4999 for (i = 0; i < np->num_rx_rings; i++) {
5000 struct rx_ring_info *rp = &np->rx_rings[i];
5001
5002 err = niu_init_one_rx_channel(np, rp);
5003 if (err)
5004 return err;
5005 }
5006
5007 return 0;
5008 }
5009
5010 static int niu_set_ip_frag_rule(struct niu *np)
5011 {
5012 struct niu_parent *parent = np->parent;
5013 struct niu_classifier *cp = &np->clas;
5014 struct niu_tcam_entry *tp;
5015 int index, err;
5016
5017 index = cp->tcam_top;
5018 tp = &parent->tcam[index];
5019
5020 /* Note that the noport bit is the same in both ipv4 and
5021 * ipv6 format TCAM entries.
5022 */
5023 memset(tp, 0, sizeof(*tp));
5024 tp->key[1] = TCAM_V4KEY1_NOPORT;
5025 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5026 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5027 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5028 err = tcam_write(np, index, tp->key, tp->key_mask);
5029 if (err)
5030 return err;
5031 err = tcam_assoc_write(np, index, tp->assoc_data);
5032 if (err)
5033 return err;
5034 tp->valid = 1;
5035 cp->tcam_valid_entries++;
5036
5037 return 0;
5038 }
5039
5040 static int niu_init_classifier_hw(struct niu *np)
5041 {
5042 struct niu_parent *parent = np->parent;
5043 struct niu_classifier *cp = &np->clas;
5044 int i, err;
5045
5046 nw64(H1POLY, cp->h1_init);
5047 nw64(H2POLY, cp->h2_init);
5048
5049 err = niu_init_hostinfo(np);
5050 if (err)
5051 return err;
5052
5053 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5054 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5055
5056 vlan_tbl_write(np, i, np->port,
5057 vp->vlan_pref, vp->rdc_num);
5058 }
5059
5060 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5061 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5062
5063 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5064 ap->rdc_num, ap->mac_pref);
5065 if (err)
5066 return err;
5067 }
5068
5069 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5070 int index = i - CLASS_CODE_USER_PROG1;
5071
5072 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5073 if (err)
5074 return err;
5075 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5076 if (err)
5077 return err;
5078 }
5079
5080 err = niu_set_ip_frag_rule(np);
5081 if (err)
5082 return err;
5083
5084 tcam_enable(np, 1);
5085
5086 return 0;
5087 }
5088
5089 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5090 {
5091 nw64(ZCP_RAM_DATA0, data[0]);
5092 nw64(ZCP_RAM_DATA1, data[1]);
5093 nw64(ZCP_RAM_DATA2, data[2]);
5094 nw64(ZCP_RAM_DATA3, data[3]);
5095 nw64(ZCP_RAM_DATA4, data[4]);
5096 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5097 nw64(ZCP_RAM_ACC,
5098 (ZCP_RAM_ACC_WRITE |
5099 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5100 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5101
5102 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5103 1000, 100);
5104 }
5105
5106 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5107 {
5108 int err;
5109
5110 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5111 1000, 100);
5112 if (err) {
5113 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5114 (unsigned long long)nr64(ZCP_RAM_ACC));
5115 return err;
5116 }
5117
5118 nw64(ZCP_RAM_ACC,
5119 (ZCP_RAM_ACC_READ |
5120 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5121 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5122
5123 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5124 1000, 100);
5125 if (err) {
5126 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5127 (unsigned long long)nr64(ZCP_RAM_ACC));
5128 return err;
5129 }
5130
5131 data[0] = nr64(ZCP_RAM_DATA0);
5132 data[1] = nr64(ZCP_RAM_DATA1);
5133 data[2] = nr64(ZCP_RAM_DATA2);
5134 data[3] = nr64(ZCP_RAM_DATA3);
5135 data[4] = nr64(ZCP_RAM_DATA4);
5136
5137 return 0;
5138 }
5139
5140 static void niu_zcp_cfifo_reset(struct niu *np)
5141 {
5142 u64 val = nr64(RESET_CFIFO);
5143
5144 val |= RESET_CFIFO_RST(np->port);
5145 nw64(RESET_CFIFO, val);
5146 udelay(10);
5147
5148 val &= ~RESET_CFIFO_RST(np->port);
5149 nw64(RESET_CFIFO, val);
5150 }
5151
5152 static int niu_init_zcp(struct niu *np)
5153 {
5154 u64 data[5], rbuf[5];
5155 int i, max, err;
5156
5157 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5158 if (np->port == 0 || np->port == 1)
5159 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5160 else
5161 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5162 } else
5163 max = NIU_CFIFO_ENTRIES;
5164
5165 data[0] = 0;
5166 data[1] = 0;
5167 data[2] = 0;
5168 data[3] = 0;
5169 data[4] = 0;
5170
5171 for (i = 0; i < max; i++) {
5172 err = niu_zcp_write(np, i, data);
5173 if (err)
5174 return err;
5175 err = niu_zcp_read(np, i, rbuf);
5176 if (err)
5177 return err;
5178 }
5179
5180 niu_zcp_cfifo_reset(np);
5181 nw64(CFIFO_ECC(np->port), 0);
5182 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5183 (void) nr64(ZCP_INT_STAT);
5184 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5185
5186 return 0;
5187 }
5188
5189 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5190 {
5191 u64 val = nr64_ipp(IPP_CFIG);
5192
5193 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5194 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5195 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5196 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5197 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5198 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5199 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5200 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5201 }
5202
5203 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5204 {
5205 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5206 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5207 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5208 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5209 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5210 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5211 }
5212
5213 static int niu_ipp_reset(struct niu *np)
5214 {
5215 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5216 1000, 100, "IPP_CFIG");
5217 }
5218
5219 static int niu_init_ipp(struct niu *np)
5220 {
5221 u64 data[5], rbuf[5], val;
5222 int i, max, err;
5223
5224 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5225 if (np->port == 0 || np->port == 1)
5226 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5227 else
5228 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5229 } else
5230 max = NIU_DFIFO_ENTRIES;
5231
5232 data[0] = 0;
5233 data[1] = 0;
5234 data[2] = 0;
5235 data[3] = 0;
5236 data[4] = 0;
5237
5238 for (i = 0; i < max; i++) {
5239 niu_ipp_write(np, i, data);
5240 niu_ipp_read(np, i, rbuf);
5241 }
5242
5243 (void) nr64_ipp(IPP_INT_STAT);
5244 (void) nr64_ipp(IPP_INT_STAT);
5245
5246 err = niu_ipp_reset(np);
5247 if (err)
5248 return err;
5249
5250 (void) nr64_ipp(IPP_PKT_DIS);
5251 (void) nr64_ipp(IPP_BAD_CS_CNT);
5252 (void) nr64_ipp(IPP_ECC);
5253
5254 (void) nr64_ipp(IPP_INT_STAT);
5255
5256 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5257
5258 val = nr64_ipp(IPP_CFIG);
5259 val &= ~IPP_CFIG_IP_MAX_PKT;
5260 val |= (IPP_CFIG_IPP_ENABLE |
5261 IPP_CFIG_DFIFO_ECC_EN |
5262 IPP_CFIG_DROP_BAD_CRC |
5263 IPP_CFIG_CKSUM_EN |
5264 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5265 nw64_ipp(IPP_CFIG, val);
5266
5267 return 0;
5268 }
5269
5270 static void niu_handle_led(struct niu *np, int status)
5271 {
5272 u64 val;
5273 val = nr64_mac(XMAC_CONFIG);
5274
5275 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5276 (np->flags & NIU_FLAGS_FIBER) != 0) {
5277 if (status) {
5278 val |= XMAC_CONFIG_LED_POLARITY;
5279 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5280 } else {
5281 val |= XMAC_CONFIG_FORCE_LED_ON;
5282 val &= ~XMAC_CONFIG_LED_POLARITY;
5283 }
5284 }
5285
5286 nw64_mac(XMAC_CONFIG, val);
5287 }
5288
5289 static void niu_init_xif_xmac(struct niu *np)
5290 {
5291 struct niu_link_config *lp = &np->link_config;
5292 u64 val;
5293
5294 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5295 val = nr64(MIF_CONFIG);
5296 val |= MIF_CONFIG_ATCA_GE;
5297 nw64(MIF_CONFIG, val);
5298 }
5299
5300 val = nr64_mac(XMAC_CONFIG);
5301 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5302
5303 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5304
5305 if (lp->loopback_mode == LOOPBACK_MAC) {
5306 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5307 val |= XMAC_CONFIG_LOOPBACK;
5308 } else {
5309 val &= ~XMAC_CONFIG_LOOPBACK;
5310 }
5311
5312 if (np->flags & NIU_FLAGS_10G) {
5313 val &= ~XMAC_CONFIG_LFS_DISABLE;
5314 } else {
5315 val |= XMAC_CONFIG_LFS_DISABLE;
5316 if (!(np->flags & NIU_FLAGS_FIBER) &&
5317 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5318 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5319 else
5320 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5321 }
5322
5323 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5324
5325 if (lp->active_speed == SPEED_100)
5326 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5327 else
5328 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5329
5330 nw64_mac(XMAC_CONFIG, val);
5331
5332 val = nr64_mac(XMAC_CONFIG);
5333 val &= ~XMAC_CONFIG_MODE_MASK;
5334 if (np->flags & NIU_FLAGS_10G) {
5335 val |= XMAC_CONFIG_MODE_XGMII;
5336 } else {
5337 if (lp->active_speed == SPEED_1000)
5338 val |= XMAC_CONFIG_MODE_GMII;
5339 else
5340 val |= XMAC_CONFIG_MODE_MII;
5341 }
5342
5343 nw64_mac(XMAC_CONFIG, val);
5344 }
5345
5346 static void niu_init_xif_bmac(struct niu *np)
5347 {
5348 struct niu_link_config *lp = &np->link_config;
5349 u64 val;
5350
5351 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5352
5353 if (lp->loopback_mode == LOOPBACK_MAC)
5354 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5355 else
5356 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5357
5358 if (lp->active_speed == SPEED_1000)
5359 val |= BMAC_XIF_CONFIG_GMII_MODE;
5360 else
5361 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5362
5363 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5364 BMAC_XIF_CONFIG_LED_POLARITY);
5365
5366 if (!(np->flags & NIU_FLAGS_10G) &&
5367 !(np->flags & NIU_FLAGS_FIBER) &&
5368 lp->active_speed == SPEED_100)
5369 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5370 else
5371 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5372
5373 nw64_mac(BMAC_XIF_CONFIG, val);
5374 }
5375
5376 static void niu_init_xif(struct niu *np)
5377 {
5378 if (np->flags & NIU_FLAGS_XMAC)
5379 niu_init_xif_xmac(np);
5380 else
5381 niu_init_xif_bmac(np);
5382 }
5383
5384 static void niu_pcs_mii_reset(struct niu *np)
5385 {
5386 int limit = 1000;
5387 u64 val = nr64_pcs(PCS_MII_CTL);
5388 val |= PCS_MII_CTL_RST;
5389 nw64_pcs(PCS_MII_CTL, val);
5390 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5391 udelay(100);
5392 val = nr64_pcs(PCS_MII_CTL);
5393 }
5394 }
5395
5396 static void niu_xpcs_reset(struct niu *np)
5397 {
5398 int limit = 1000;
5399 u64 val = nr64_xpcs(XPCS_CONTROL1);
5400 val |= XPCS_CONTROL1_RESET;
5401 nw64_xpcs(XPCS_CONTROL1, val);
5402 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5403 udelay(100);
5404 val = nr64_xpcs(XPCS_CONTROL1);
5405 }
5406 }
5407
5408 static int niu_init_pcs(struct niu *np)
5409 {
5410 struct niu_link_config *lp = &np->link_config;
5411 u64 val;
5412
5413 switch (np->flags & (NIU_FLAGS_10G |
5414 NIU_FLAGS_FIBER |
5415 NIU_FLAGS_XCVR_SERDES)) {
5416 case NIU_FLAGS_FIBER:
5417 /* 1G fiber */
5418 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5419 nw64_pcs(PCS_DPATH_MODE, 0);
5420 niu_pcs_mii_reset(np);
5421 break;
5422
5423 case NIU_FLAGS_10G:
5424 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5425 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5426 /* 10G SERDES */
5427 if (!(np->flags & NIU_FLAGS_XMAC))
5428 return -EINVAL;
5429
5430 /* 10G copper or fiber */
5431 val = nr64_mac(XMAC_CONFIG);
5432 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5433 nw64_mac(XMAC_CONFIG, val);
5434
5435 niu_xpcs_reset(np);
5436
5437 val = nr64_xpcs(XPCS_CONTROL1);
5438 if (lp->loopback_mode == LOOPBACK_PHY)
5439 val |= XPCS_CONTROL1_LOOPBACK;
5440 else
5441 val &= ~XPCS_CONTROL1_LOOPBACK;
5442 nw64_xpcs(XPCS_CONTROL1, val);
5443
5444 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5445 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5446 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5447 break;
5448
5449
5450 case NIU_FLAGS_XCVR_SERDES:
5451 /* 1G SERDES */
5452 niu_pcs_mii_reset(np);
5453 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5454 nw64_pcs(PCS_DPATH_MODE, 0);
5455 break;
5456
5457 case 0:
5458 /* 1G copper */
5459 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5460 /* 1G RGMII FIBER */
5461 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5462 niu_pcs_mii_reset(np);
5463 break;
5464
5465 default:
5466 return -EINVAL;
5467 }
5468
5469 return 0;
5470 }
5471
5472 static int niu_reset_tx_xmac(struct niu *np)
5473 {
5474 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5475 (XTXMAC_SW_RST_REG_RS |
5476 XTXMAC_SW_RST_SOFT_RST),
5477 1000, 100, "XTXMAC_SW_RST");
5478 }
5479
5480 static int niu_reset_tx_bmac(struct niu *np)
5481 {
5482 int limit;
5483
5484 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5485 limit = 1000;
5486 while (--limit >= 0) {
5487 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5488 break;
5489 udelay(100);
5490 }
5491 if (limit < 0) {
5492 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5493 np->port,
5494 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5495 return -ENODEV;
5496 }
5497
5498 return 0;
5499 }
5500
5501 static int niu_reset_tx_mac(struct niu *np)
5502 {
5503 if (np->flags & NIU_FLAGS_XMAC)
5504 return niu_reset_tx_xmac(np);
5505 else
5506 return niu_reset_tx_bmac(np);
5507 }
5508
5509 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5510 {
5511 u64 val;
5512
5513 val = nr64_mac(XMAC_MIN);
5514 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5515 XMAC_MIN_RX_MIN_PKT_SIZE);
5516 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5517 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5518 nw64_mac(XMAC_MIN, val);
5519
5520 nw64_mac(XMAC_MAX, max);
5521
5522 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5523
5524 val = nr64_mac(XMAC_IPG);
5525 if (np->flags & NIU_FLAGS_10G) {
5526 val &= ~XMAC_IPG_IPG_XGMII;
5527 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5528 } else {
5529 val &= ~XMAC_IPG_IPG_MII_GMII;
5530 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5531 }
5532 nw64_mac(XMAC_IPG, val);
5533
5534 val = nr64_mac(XMAC_CONFIG);
5535 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5536 XMAC_CONFIG_STRETCH_MODE |
5537 XMAC_CONFIG_VAR_MIN_IPG_EN |
5538 XMAC_CONFIG_TX_ENABLE);
5539 nw64_mac(XMAC_CONFIG, val);
5540
5541 nw64_mac(TXMAC_FRM_CNT, 0);
5542 nw64_mac(TXMAC_BYTE_CNT, 0);
5543 }
5544
5545 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5546 {
5547 u64 val;
5548
5549 nw64_mac(BMAC_MIN_FRAME, min);
5550 nw64_mac(BMAC_MAX_FRAME, max);
5551
5552 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5553 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5554 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5555
5556 val = nr64_mac(BTXMAC_CONFIG);
5557 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5558 BTXMAC_CONFIG_ENABLE);
5559 nw64_mac(BTXMAC_CONFIG, val);
5560 }
5561
5562 static void niu_init_tx_mac(struct niu *np)
5563 {
5564 u64 min, max;
5565
5566 min = 64;
5567 if (np->dev->mtu > ETH_DATA_LEN)
5568 max = 9216;
5569 else
5570 max = 1522;
5571
5572 /* The XMAC_MIN register only accepts values for TX min which
5573 * have the low 3 bits cleared.
5574 */
5575 BUG_ON(min & 0x7);
5576
5577 if (np->flags & NIU_FLAGS_XMAC)
5578 niu_init_tx_xmac(np, min, max);
5579 else
5580 niu_init_tx_bmac(np, min, max);
5581 }
5582
5583 static int niu_reset_rx_xmac(struct niu *np)
5584 {
5585 int limit;
5586
5587 nw64_mac(XRXMAC_SW_RST,
5588 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5589 limit = 1000;
5590 while (--limit >= 0) {
5591 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5592 XRXMAC_SW_RST_SOFT_RST)))
5593 break;
5594 udelay(100);
5595 }
5596 if (limit < 0) {
5597 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5598 np->port,
5599 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5600 return -ENODEV;
5601 }
5602
5603 return 0;
5604 }
5605
5606 static int niu_reset_rx_bmac(struct niu *np)
5607 {
5608 int limit;
5609
5610 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5611 limit = 1000;
5612 while (--limit >= 0) {
5613 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5614 break;
5615 udelay(100);
5616 }
5617 if (limit < 0) {
5618 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5619 np->port,
5620 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5621 return -ENODEV;
5622 }
5623
5624 return 0;
5625 }
5626
5627 static int niu_reset_rx_mac(struct niu *np)
5628 {
5629 if (np->flags & NIU_FLAGS_XMAC)
5630 return niu_reset_rx_xmac(np);
5631 else
5632 return niu_reset_rx_bmac(np);
5633 }
5634
5635 static void niu_init_rx_xmac(struct niu *np)
5636 {
5637 struct niu_parent *parent = np->parent;
5638 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5639 int first_rdc_table = tp->first_table_num;
5640 unsigned long i;
5641 u64 val;
5642
5643 nw64_mac(XMAC_ADD_FILT0, 0);
5644 nw64_mac(XMAC_ADD_FILT1, 0);
5645 nw64_mac(XMAC_ADD_FILT2, 0);
5646 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5647 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5648 for (i = 0; i < MAC_NUM_HASH; i++)
5649 nw64_mac(XMAC_HASH_TBL(i), 0);
5650 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5651 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5652 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5653
5654 val = nr64_mac(XMAC_CONFIG);
5655 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5656 XMAC_CONFIG_PROMISCUOUS |
5657 XMAC_CONFIG_PROMISC_GROUP |
5658 XMAC_CONFIG_ERR_CHK_DIS |
5659 XMAC_CONFIG_RX_CRC_CHK_DIS |
5660 XMAC_CONFIG_RESERVED_MULTICAST |
5661 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5662 XMAC_CONFIG_ADDR_FILTER_EN |
5663 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5664 XMAC_CONFIG_STRIP_CRC |
5665 XMAC_CONFIG_PASS_FLOW_CTRL |
5666 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5667 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5668 nw64_mac(XMAC_CONFIG, val);
5669
5670 nw64_mac(RXMAC_BT_CNT, 0);
5671 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5672 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5673 nw64_mac(RXMAC_FRAG_CNT, 0);
5674 nw64_mac(RXMAC_HIST_CNT1, 0);
5675 nw64_mac(RXMAC_HIST_CNT2, 0);
5676 nw64_mac(RXMAC_HIST_CNT3, 0);
5677 nw64_mac(RXMAC_HIST_CNT4, 0);
5678 nw64_mac(RXMAC_HIST_CNT5, 0);
5679 nw64_mac(RXMAC_HIST_CNT6, 0);
5680 nw64_mac(RXMAC_HIST_CNT7, 0);
5681 nw64_mac(RXMAC_MPSZER_CNT, 0);
5682 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5683 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5684 nw64_mac(LINK_FAULT_CNT, 0);
5685 }
5686
5687 static void niu_init_rx_bmac(struct niu *np)
5688 {
5689 struct niu_parent *parent = np->parent;
5690 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5691 int first_rdc_table = tp->first_table_num;
5692 unsigned long i;
5693 u64 val;
5694
5695 nw64_mac(BMAC_ADD_FILT0, 0);
5696 nw64_mac(BMAC_ADD_FILT1, 0);
5697 nw64_mac(BMAC_ADD_FILT2, 0);
5698 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5699 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5700 for (i = 0; i < MAC_NUM_HASH; i++)
5701 nw64_mac(BMAC_HASH_TBL(i), 0);
5702 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5703 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5704 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5705
5706 val = nr64_mac(BRXMAC_CONFIG);
5707 val &= ~(BRXMAC_CONFIG_ENABLE |
5708 BRXMAC_CONFIG_STRIP_PAD |
5709 BRXMAC_CONFIG_STRIP_FCS |
5710 BRXMAC_CONFIG_PROMISC |
5711 BRXMAC_CONFIG_PROMISC_GRP |
5712 BRXMAC_CONFIG_ADDR_FILT_EN |
5713 BRXMAC_CONFIG_DISCARD_DIS);
5714 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5715 nw64_mac(BRXMAC_CONFIG, val);
5716
5717 val = nr64_mac(BMAC_ADDR_CMPEN);
5718 val |= BMAC_ADDR_CMPEN_EN0;
5719 nw64_mac(BMAC_ADDR_CMPEN, val);
5720 }
5721
5722 static void niu_init_rx_mac(struct niu *np)
5723 {
5724 niu_set_primary_mac(np, np->dev->dev_addr);
5725
5726 if (np->flags & NIU_FLAGS_XMAC)
5727 niu_init_rx_xmac(np);
5728 else
5729 niu_init_rx_bmac(np);
5730 }
5731
5732 static void niu_enable_tx_xmac(struct niu *np, int on)
5733 {
5734 u64 val = nr64_mac(XMAC_CONFIG);
5735
5736 if (on)
5737 val |= XMAC_CONFIG_TX_ENABLE;
5738 else
5739 val &= ~XMAC_CONFIG_TX_ENABLE;
5740 nw64_mac(XMAC_CONFIG, val);
5741 }
5742
5743 static void niu_enable_tx_bmac(struct niu *np, int on)
5744 {
5745 u64 val = nr64_mac(BTXMAC_CONFIG);
5746
5747 if (on)
5748 val |= BTXMAC_CONFIG_ENABLE;
5749 else
5750 val &= ~BTXMAC_CONFIG_ENABLE;
5751 nw64_mac(BTXMAC_CONFIG, val);
5752 }
5753
5754 static void niu_enable_tx_mac(struct niu *np, int on)
5755 {
5756 if (np->flags & NIU_FLAGS_XMAC)
5757 niu_enable_tx_xmac(np, on);
5758 else
5759 niu_enable_tx_bmac(np, on);
5760 }
5761
5762 static void niu_enable_rx_xmac(struct niu *np, int on)
5763 {
5764 u64 val = nr64_mac(XMAC_CONFIG);
5765
5766 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5767 XMAC_CONFIG_PROMISCUOUS);
5768
5769 if (np->flags & NIU_FLAGS_MCAST)
5770 val |= XMAC_CONFIG_HASH_FILTER_EN;
5771 if (np->flags & NIU_FLAGS_PROMISC)
5772 val |= XMAC_CONFIG_PROMISCUOUS;
5773
5774 if (on)
5775 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5776 else
5777 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5778 nw64_mac(XMAC_CONFIG, val);
5779 }
5780
5781 static void niu_enable_rx_bmac(struct niu *np, int on)
5782 {
5783 u64 val = nr64_mac(BRXMAC_CONFIG);
5784
5785 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5786 BRXMAC_CONFIG_PROMISC);
5787
5788 if (np->flags & NIU_FLAGS_MCAST)
5789 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5790 if (np->flags & NIU_FLAGS_PROMISC)
5791 val |= BRXMAC_CONFIG_PROMISC;
5792
5793 if (on)
5794 val |= BRXMAC_CONFIG_ENABLE;
5795 else
5796 val &= ~BRXMAC_CONFIG_ENABLE;
5797 nw64_mac(BRXMAC_CONFIG, val);
5798 }
5799
5800 static void niu_enable_rx_mac(struct niu *np, int on)
5801 {
5802 if (np->flags & NIU_FLAGS_XMAC)
5803 niu_enable_rx_xmac(np, on);
5804 else
5805 niu_enable_rx_bmac(np, on);
5806 }
5807
5808 static int niu_init_mac(struct niu *np)
5809 {
5810 int err;
5811
5812 niu_init_xif(np);
5813 err = niu_init_pcs(np);
5814 if (err)
5815 return err;
5816
5817 err = niu_reset_tx_mac(np);
5818 if (err)
5819 return err;
5820 niu_init_tx_mac(np);
5821 err = niu_reset_rx_mac(np);
5822 if (err)
5823 return err;
5824 niu_init_rx_mac(np);
5825
5826 /* This looks hookey but the RX MAC reset we just did will
5827 * undo some of the state we setup in niu_init_tx_mac() so we
5828 * have to call it again. In particular, the RX MAC reset will
5829 * set the XMAC_MAX register back to it's default value.
5830 */
5831 niu_init_tx_mac(np);
5832 niu_enable_tx_mac(np, 1);
5833
5834 niu_enable_rx_mac(np, 1);
5835
5836 return 0;
5837 }
5838
5839 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5840 {
5841 (void) niu_tx_channel_stop(np, rp->tx_channel);
5842 }
5843
5844 static void niu_stop_tx_channels(struct niu *np)
5845 {
5846 int i;
5847
5848 for (i = 0; i < np->num_tx_rings; i++) {
5849 struct tx_ring_info *rp = &np->tx_rings[i];
5850
5851 niu_stop_one_tx_channel(np, rp);
5852 }
5853 }
5854
5855 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5856 {
5857 (void) niu_tx_channel_reset(np, rp->tx_channel);
5858 }
5859
5860 static void niu_reset_tx_channels(struct niu *np)
5861 {
5862 int i;
5863
5864 for (i = 0; i < np->num_tx_rings; i++) {
5865 struct tx_ring_info *rp = &np->tx_rings[i];
5866
5867 niu_reset_one_tx_channel(np, rp);
5868 }
5869 }
5870
5871 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5872 {
5873 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5874 }
5875
5876 static void niu_stop_rx_channels(struct niu *np)
5877 {
5878 int i;
5879
5880 for (i = 0; i < np->num_rx_rings; i++) {
5881 struct rx_ring_info *rp = &np->rx_rings[i];
5882
5883 niu_stop_one_rx_channel(np, rp);
5884 }
5885 }
5886
5887 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5888 {
5889 int channel = rp->rx_channel;
5890
5891 (void) niu_rx_channel_reset(np, channel);
5892 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5893 nw64(RX_DMA_CTL_STAT(channel), 0);
5894 (void) niu_enable_rx_channel(np, channel, 0);
5895 }
5896
5897 static void niu_reset_rx_channels(struct niu *np)
5898 {
5899 int i;
5900
5901 for (i = 0; i < np->num_rx_rings; i++) {
5902 struct rx_ring_info *rp = &np->rx_rings[i];
5903
5904 niu_reset_one_rx_channel(np, rp);
5905 }
5906 }
5907
5908 static void niu_disable_ipp(struct niu *np)
5909 {
5910 u64 rd, wr, val;
5911 int limit;
5912
5913 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5914 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5915 limit = 100;
5916 while (--limit >= 0 && (rd != wr)) {
5917 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5918 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5919 }
5920 if (limit < 0 &&
5921 (rd != 0 && wr != 1)) {
5922 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5923 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5924 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5925 }
5926
5927 val = nr64_ipp(IPP_CFIG);
5928 val &= ~(IPP_CFIG_IPP_ENABLE |
5929 IPP_CFIG_DFIFO_ECC_EN |
5930 IPP_CFIG_DROP_BAD_CRC |
5931 IPP_CFIG_CKSUM_EN);
5932 nw64_ipp(IPP_CFIG, val);
5933
5934 (void) niu_ipp_reset(np);
5935 }
5936
5937 static int niu_init_hw(struct niu *np)
5938 {
5939 int i, err;
5940
5941 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5942 niu_txc_enable_port(np, 1);
5943 niu_txc_port_dma_enable(np, 1);
5944 niu_txc_set_imask(np, 0);
5945
5946 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5947 for (i = 0; i < np->num_tx_rings; i++) {
5948 struct tx_ring_info *rp = &np->tx_rings[i];
5949
5950 err = niu_init_one_tx_channel(np, rp);
5951 if (err)
5952 return err;
5953 }
5954
5955 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5956 err = niu_init_rx_channels(np);
5957 if (err)
5958 goto out_uninit_tx_channels;
5959
5960 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5961 err = niu_init_classifier_hw(np);
5962 if (err)
5963 goto out_uninit_rx_channels;
5964
5965 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5966 err = niu_init_zcp(np);
5967 if (err)
5968 goto out_uninit_rx_channels;
5969
5970 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5971 err = niu_init_ipp(np);
5972 if (err)
5973 goto out_uninit_rx_channels;
5974
5975 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5976 err = niu_init_mac(np);
5977 if (err)
5978 goto out_uninit_ipp;
5979
5980 return 0;
5981
5982 out_uninit_ipp:
5983 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5984 niu_disable_ipp(np);
5985
5986 out_uninit_rx_channels:
5987 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5988 niu_stop_rx_channels(np);
5989 niu_reset_rx_channels(np);
5990
5991 out_uninit_tx_channels:
5992 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5993 niu_stop_tx_channels(np);
5994 niu_reset_tx_channels(np);
5995
5996 return err;
5997 }
5998
5999 static void niu_stop_hw(struct niu *np)
6000 {
6001 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6002 niu_enable_interrupts(np, 0);
6003
6004 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6005 niu_enable_rx_mac(np, 0);
6006
6007 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6008 niu_disable_ipp(np);
6009
6010 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6011 niu_stop_tx_channels(np);
6012
6013 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6014 niu_stop_rx_channels(np);
6015
6016 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6017 niu_reset_tx_channels(np);
6018
6019 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6020 niu_reset_rx_channels(np);
6021 }
6022
6023 static void niu_set_irq_name(struct niu *np)
6024 {
6025 int port = np->port;
6026 int i, j = 1;
6027
6028 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6029
6030 if (port == 0) {
6031 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6032 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6033 j = 3;
6034 }
6035
6036 for (i = 0; i < np->num_ldg - j; i++) {
6037 if (i < np->num_rx_rings)
6038 sprintf(np->irq_name[i+j], "%s-rx-%d",
6039 np->dev->name, i);
6040 else if (i < np->num_tx_rings + np->num_rx_rings)
6041 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6042 i - np->num_rx_rings);
6043 }
6044 }
6045
6046 static int niu_request_irq(struct niu *np)
6047 {
6048 int i, j, err;
6049
6050 niu_set_irq_name(np);
6051
6052 err = 0;
6053 for (i = 0; i < np->num_ldg; i++) {
6054 struct niu_ldg *lp = &np->ldg[i];
6055
6056 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6057 np->irq_name[i], lp);
6058 if (err)
6059 goto out_free_irqs;
6060
6061 }
6062
6063 return 0;
6064
6065 out_free_irqs:
6066 for (j = 0; j < i; j++) {
6067 struct niu_ldg *lp = &np->ldg[j];
6068
6069 free_irq(lp->irq, lp);
6070 }
6071 return err;
6072 }
6073
6074 static void niu_free_irq(struct niu *np)
6075 {
6076 int i;
6077
6078 for (i = 0; i < np->num_ldg; i++) {
6079 struct niu_ldg *lp = &np->ldg[i];
6080
6081 free_irq(lp->irq, lp);
6082 }
6083 }
6084
6085 static void niu_enable_napi(struct niu *np)
6086 {
6087 int i;
6088
6089 for (i = 0; i < np->num_ldg; i++)
6090 napi_enable(&np->ldg[i].napi);
6091 }
6092
6093 static void niu_disable_napi(struct niu *np)
6094 {
6095 int i;
6096
6097 for (i = 0; i < np->num_ldg; i++)
6098 napi_disable(&np->ldg[i].napi);
6099 }
6100
6101 static int niu_open(struct net_device *dev)
6102 {
6103 struct niu *np = netdev_priv(dev);
6104 int err;
6105
6106 netif_carrier_off(dev);
6107
6108 err = niu_alloc_channels(np);
6109 if (err)
6110 goto out_err;
6111
6112 err = niu_enable_interrupts(np, 0);
6113 if (err)
6114 goto out_free_channels;
6115
6116 err = niu_request_irq(np);
6117 if (err)
6118 goto out_free_channels;
6119
6120 niu_enable_napi(np);
6121
6122 spin_lock_irq(&np->lock);
6123
6124 err = niu_init_hw(np);
6125 if (!err) {
6126 init_timer(&np->timer);
6127 np->timer.expires = jiffies + HZ;
6128 np->timer.data = (unsigned long) np;
6129 np->timer.function = niu_timer;
6130
6131 err = niu_enable_interrupts(np, 1);
6132 if (err)
6133 niu_stop_hw(np);
6134 }
6135
6136 spin_unlock_irq(&np->lock);
6137
6138 if (err) {
6139 niu_disable_napi(np);
6140 goto out_free_irq;
6141 }
6142
6143 netif_tx_start_all_queues(dev);
6144
6145 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6146 netif_carrier_on(dev);
6147
6148 add_timer(&np->timer);
6149
6150 return 0;
6151
6152 out_free_irq:
6153 niu_free_irq(np);
6154
6155 out_free_channels:
6156 niu_free_channels(np);
6157
6158 out_err:
6159 return err;
6160 }
6161
6162 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6163 {
6164 cancel_work_sync(&np->reset_task);
6165
6166 niu_disable_napi(np);
6167 netif_tx_stop_all_queues(dev);
6168
6169 del_timer_sync(&np->timer);
6170
6171 spin_lock_irq(&np->lock);
6172
6173 niu_stop_hw(np);
6174
6175 spin_unlock_irq(&np->lock);
6176 }
6177
6178 static int niu_close(struct net_device *dev)
6179 {
6180 struct niu *np = netdev_priv(dev);
6181
6182 niu_full_shutdown(np, dev);
6183
6184 niu_free_irq(np);
6185
6186 niu_free_channels(np);
6187
6188 niu_handle_led(np, 0);
6189
6190 return 0;
6191 }
6192
6193 static void niu_sync_xmac_stats(struct niu *np)
6194 {
6195 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6196
6197 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6198 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6199
6200 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6201 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6202 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6203 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6204 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6205 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6206 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6207 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6208 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6209 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6210 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6211 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6212 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6213 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6214 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6215 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6216 }
6217
6218 static void niu_sync_bmac_stats(struct niu *np)
6219 {
6220 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6221
6222 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6223 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6224
6225 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6226 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6227 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6228 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6229 }
6230
6231 static void niu_sync_mac_stats(struct niu *np)
6232 {
6233 if (np->flags & NIU_FLAGS_XMAC)
6234 niu_sync_xmac_stats(np);
6235 else
6236 niu_sync_bmac_stats(np);
6237 }
6238
6239 static void niu_get_rx_stats(struct niu *np,
6240 struct rtnl_link_stats64 *stats)
6241 {
6242 u64 pkts, dropped, errors, bytes;
6243 struct rx_ring_info *rx_rings;
6244 int i;
6245
6246 pkts = dropped = errors = bytes = 0;
6247
6248 rx_rings = ACCESS_ONCE(np->rx_rings);
6249 if (!rx_rings)
6250 goto no_rings;
6251
6252 for (i = 0; i < np->num_rx_rings; i++) {
6253 struct rx_ring_info *rp = &rx_rings[i];
6254
6255 niu_sync_rx_discard_stats(np, rp, 0);
6256
6257 pkts += rp->rx_packets;
6258 bytes += rp->rx_bytes;
6259 dropped += rp->rx_dropped;
6260 errors += rp->rx_errors;
6261 }
6262
6263 no_rings:
6264 stats->rx_packets = pkts;
6265 stats->rx_bytes = bytes;
6266 stats->rx_dropped = dropped;
6267 stats->rx_errors = errors;
6268 }
6269
6270 static void niu_get_tx_stats(struct niu *np,
6271 struct rtnl_link_stats64 *stats)
6272 {
6273 u64 pkts, errors, bytes;
6274 struct tx_ring_info *tx_rings;
6275 int i;
6276
6277 pkts = errors = bytes = 0;
6278
6279 tx_rings = ACCESS_ONCE(np->tx_rings);
6280 if (!tx_rings)
6281 goto no_rings;
6282
6283 for (i = 0; i < np->num_tx_rings; i++) {
6284 struct tx_ring_info *rp = &tx_rings[i];
6285
6286 pkts += rp->tx_packets;
6287 bytes += rp->tx_bytes;
6288 errors += rp->tx_errors;
6289 }
6290
6291 no_rings:
6292 stats->tx_packets = pkts;
6293 stats->tx_bytes = bytes;
6294 stats->tx_errors = errors;
6295 }
6296
6297 static struct rtnl_link_stats64 *niu_get_stats(struct net_device *dev,
6298 struct rtnl_link_stats64 *stats)
6299 {
6300 struct niu *np = netdev_priv(dev);
6301
6302 if (netif_running(dev)) {
6303 niu_get_rx_stats(np, stats);
6304 niu_get_tx_stats(np, stats);
6305 }
6306
6307 return stats;
6308 }
6309
6310 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6311 {
6312 int i;
6313
6314 for (i = 0; i < 16; i++)
6315 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6316 }
6317
6318 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6319 {
6320 int i;
6321
6322 for (i = 0; i < 16; i++)
6323 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6324 }
6325
6326 static void niu_load_hash(struct niu *np, u16 *hash)
6327 {
6328 if (np->flags & NIU_FLAGS_XMAC)
6329 niu_load_hash_xmac(np, hash);
6330 else
6331 niu_load_hash_bmac(np, hash);
6332 }
6333
6334 static void niu_set_rx_mode(struct net_device *dev)
6335 {
6336 struct niu *np = netdev_priv(dev);
6337 int i, alt_cnt, err;
6338 struct netdev_hw_addr *ha;
6339 unsigned long flags;
6340 u16 hash[16] = { 0, };
6341
6342 spin_lock_irqsave(&np->lock, flags);
6343 niu_enable_rx_mac(np, 0);
6344
6345 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6346 if (dev->flags & IFF_PROMISC)
6347 np->flags |= NIU_FLAGS_PROMISC;
6348 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6349 np->flags |= NIU_FLAGS_MCAST;
6350
6351 alt_cnt = netdev_uc_count(dev);
6352 if (alt_cnt > niu_num_alt_addr(np)) {
6353 alt_cnt = 0;
6354 np->flags |= NIU_FLAGS_PROMISC;
6355 }
6356
6357 if (alt_cnt) {
6358 int index = 0;
6359
6360 netdev_for_each_uc_addr(ha, dev) {
6361 err = niu_set_alt_mac(np, index, ha->addr);
6362 if (err)
6363 netdev_warn(dev, "Error %d adding alt mac %d\n",
6364 err, index);
6365 err = niu_enable_alt_mac(np, index, 1);
6366 if (err)
6367 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6368 err, index);
6369
6370 index++;
6371 }
6372 } else {
6373 int alt_start;
6374 if (np->flags & NIU_FLAGS_XMAC)
6375 alt_start = 0;
6376 else
6377 alt_start = 1;
6378 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6379 err = niu_enable_alt_mac(np, i, 0);
6380 if (err)
6381 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6382 err, i);
6383 }
6384 }
6385 if (dev->flags & IFF_ALLMULTI) {
6386 for (i = 0; i < 16; i++)
6387 hash[i] = 0xffff;
6388 } else if (!netdev_mc_empty(dev)) {
6389 netdev_for_each_mc_addr(ha, dev) {
6390 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6391
6392 crc >>= 24;
6393 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6394 }
6395 }
6396
6397 if (np->flags & NIU_FLAGS_MCAST)
6398 niu_load_hash(np, hash);
6399
6400 niu_enable_rx_mac(np, 1);
6401 spin_unlock_irqrestore(&np->lock, flags);
6402 }
6403
6404 static int niu_set_mac_addr(struct net_device *dev, void *p)
6405 {
6406 struct niu *np = netdev_priv(dev);
6407 struct sockaddr *addr = p;
6408 unsigned long flags;
6409
6410 if (!is_valid_ether_addr(addr->sa_data))
6411 return -EADDRNOTAVAIL;
6412
6413 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6414
6415 if (!netif_running(dev))
6416 return 0;
6417
6418 spin_lock_irqsave(&np->lock, flags);
6419 niu_enable_rx_mac(np, 0);
6420 niu_set_primary_mac(np, dev->dev_addr);
6421 niu_enable_rx_mac(np, 1);
6422 spin_unlock_irqrestore(&np->lock, flags);
6423
6424 return 0;
6425 }
6426
6427 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6428 {
6429 return -EOPNOTSUPP;
6430 }
6431
6432 static void niu_netif_stop(struct niu *np)
6433 {
6434 netif_trans_update(np->dev); /* prevent tx timeout */
6435
6436 niu_disable_napi(np);
6437
6438 netif_tx_disable(np->dev);
6439 }
6440
6441 static void niu_netif_start(struct niu *np)
6442 {
6443 /* NOTE: unconditional netif_wake_queue is only appropriate
6444 * so long as all callers are assured to have free tx slots
6445 * (such as after niu_init_hw).
6446 */
6447 netif_tx_wake_all_queues(np->dev);
6448
6449 niu_enable_napi(np);
6450
6451 niu_enable_interrupts(np, 1);
6452 }
6453
6454 static void niu_reset_buffers(struct niu *np)
6455 {
6456 int i, j, k, err;
6457
6458 if (np->rx_rings) {
6459 for (i = 0; i < np->num_rx_rings; i++) {
6460 struct rx_ring_info *rp = &np->rx_rings[i];
6461
6462 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6463 struct page *page;
6464
6465 page = rp->rxhash[j];
6466 while (page) {
6467 struct page *next =
6468 (struct page *) page->mapping;
6469 u64 base = page->index;
6470 base = base >> RBR_DESCR_ADDR_SHIFT;
6471 rp->rbr[k++] = cpu_to_le32(base);
6472 page = next;
6473 }
6474 }
6475 for (; k < MAX_RBR_RING_SIZE; k++) {
6476 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6477 if (unlikely(err))
6478 break;
6479 }
6480
6481 rp->rbr_index = rp->rbr_table_size - 1;
6482 rp->rcr_index = 0;
6483 rp->rbr_pending = 0;
6484 rp->rbr_refill_pending = 0;
6485 }
6486 }
6487 if (np->tx_rings) {
6488 for (i = 0; i < np->num_tx_rings; i++) {
6489 struct tx_ring_info *rp = &np->tx_rings[i];
6490
6491 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6492 if (rp->tx_buffs[j].skb)
6493 (void) release_tx_packet(np, rp, j);
6494 }
6495
6496 rp->pending = MAX_TX_RING_SIZE;
6497 rp->prod = 0;
6498 rp->cons = 0;
6499 rp->wrap_bit = 0;
6500 }
6501 }
6502 }
6503
6504 static void niu_reset_task(struct work_struct *work)
6505 {
6506 struct niu *np = container_of(work, struct niu, reset_task);
6507 unsigned long flags;
6508 int err;
6509
6510 spin_lock_irqsave(&np->lock, flags);
6511 if (!netif_running(np->dev)) {
6512 spin_unlock_irqrestore(&np->lock, flags);
6513 return;
6514 }
6515
6516 spin_unlock_irqrestore(&np->lock, flags);
6517
6518 del_timer_sync(&np->timer);
6519
6520 niu_netif_stop(np);
6521
6522 spin_lock_irqsave(&np->lock, flags);
6523
6524 niu_stop_hw(np);
6525
6526 spin_unlock_irqrestore(&np->lock, flags);
6527
6528 niu_reset_buffers(np);
6529
6530 spin_lock_irqsave(&np->lock, flags);
6531
6532 err = niu_init_hw(np);
6533 if (!err) {
6534 np->timer.expires = jiffies + HZ;
6535 add_timer(&np->timer);
6536 niu_netif_start(np);
6537 }
6538
6539 spin_unlock_irqrestore(&np->lock, flags);
6540 }
6541
6542 static void niu_tx_timeout(struct net_device *dev)
6543 {
6544 struct niu *np = netdev_priv(dev);
6545
6546 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6547 dev->name);
6548
6549 schedule_work(&np->reset_task);
6550 }
6551
6552 static void niu_set_txd(struct tx_ring_info *rp, int index,
6553 u64 mapping, u64 len, u64 mark,
6554 u64 n_frags)
6555 {
6556 __le64 *desc = &rp->descr[index];
6557
6558 *desc = cpu_to_le64(mark |
6559 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6560 (len << TX_DESC_TR_LEN_SHIFT) |
6561 (mapping & TX_DESC_SAD));
6562 }
6563
6564 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6565 u64 pad_bytes, u64 len)
6566 {
6567 u16 eth_proto, eth_proto_inner;
6568 u64 csum_bits, l3off, ihl, ret;
6569 u8 ip_proto;
6570 int ipv6;
6571
6572 eth_proto = be16_to_cpu(ehdr->h_proto);
6573 eth_proto_inner = eth_proto;
6574 if (eth_proto == ETH_P_8021Q) {
6575 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6576 __be16 val = vp->h_vlan_encapsulated_proto;
6577
6578 eth_proto_inner = be16_to_cpu(val);
6579 }
6580
6581 ipv6 = ihl = 0;
6582 switch (skb->protocol) {
6583 case cpu_to_be16(ETH_P_IP):
6584 ip_proto = ip_hdr(skb)->protocol;
6585 ihl = ip_hdr(skb)->ihl;
6586 break;
6587 case cpu_to_be16(ETH_P_IPV6):
6588 ip_proto = ipv6_hdr(skb)->nexthdr;
6589 ihl = (40 >> 2);
6590 ipv6 = 1;
6591 break;
6592 default:
6593 ip_proto = ihl = 0;
6594 break;
6595 }
6596
6597 csum_bits = TXHDR_CSUM_NONE;
6598 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6599 u64 start, stuff;
6600
6601 csum_bits = (ip_proto == IPPROTO_TCP ?
6602 TXHDR_CSUM_TCP :
6603 (ip_proto == IPPROTO_UDP ?
6604 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6605
6606 start = skb_checksum_start_offset(skb) -
6607 (pad_bytes + sizeof(struct tx_pkt_hdr));
6608 stuff = start + skb->csum_offset;
6609
6610 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6611 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6612 }
6613
6614 l3off = skb_network_offset(skb) -
6615 (pad_bytes + sizeof(struct tx_pkt_hdr));
6616
6617 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6618 (len << TXHDR_LEN_SHIFT) |
6619 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6620 (ihl << TXHDR_IHL_SHIFT) |
6621 ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
6622 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6623 (ipv6 ? TXHDR_IP_VER : 0) |
6624 csum_bits);
6625
6626 return ret;
6627 }
6628
6629 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6630 struct net_device *dev)
6631 {
6632 struct niu *np = netdev_priv(dev);
6633 unsigned long align, headroom;
6634 struct netdev_queue *txq;
6635 struct tx_ring_info *rp;
6636 struct tx_pkt_hdr *tp;
6637 unsigned int len, nfg;
6638 struct ethhdr *ehdr;
6639 int prod, i, tlen;
6640 u64 mapping, mrk;
6641
6642 i = skb_get_queue_mapping(skb);
6643 rp = &np->tx_rings[i];
6644 txq = netdev_get_tx_queue(dev, i);
6645
6646 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6647 netif_tx_stop_queue(txq);
6648 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6649 rp->tx_errors++;
6650 return NETDEV_TX_BUSY;
6651 }
6652
6653 if (eth_skb_pad(skb))
6654 goto out;
6655
6656 len = sizeof(struct tx_pkt_hdr) + 15;
6657 if (skb_headroom(skb) < len) {
6658 struct sk_buff *skb_new;
6659
6660 skb_new = skb_realloc_headroom(skb, len);
6661 if (!skb_new)
6662 goto out_drop;
6663 kfree_skb(skb);
6664 skb = skb_new;
6665 } else
6666 skb_orphan(skb);
6667
6668 align = ((unsigned long) skb->data & (16 - 1));
6669 headroom = align + sizeof(struct tx_pkt_hdr);
6670
6671 ehdr = (struct ethhdr *) skb->data;
6672 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6673
6674 len = skb->len - sizeof(struct tx_pkt_hdr);
6675 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6676 tp->resv = 0;
6677
6678 len = skb_headlen(skb);
6679 mapping = np->ops->map_single(np->device, skb->data,
6680 len, DMA_TO_DEVICE);
6681
6682 prod = rp->prod;
6683
6684 rp->tx_buffs[prod].skb = skb;
6685 rp->tx_buffs[prod].mapping = mapping;
6686
6687 mrk = TX_DESC_SOP;
6688 if (++rp->mark_counter == rp->mark_freq) {
6689 rp->mark_counter = 0;
6690 mrk |= TX_DESC_MARK;
6691 rp->mark_pending++;
6692 }
6693
6694 tlen = len;
6695 nfg = skb_shinfo(skb)->nr_frags;
6696 while (tlen > 0) {
6697 tlen -= MAX_TX_DESC_LEN;
6698 nfg++;
6699 }
6700
6701 while (len > 0) {
6702 unsigned int this_len = len;
6703
6704 if (this_len > MAX_TX_DESC_LEN)
6705 this_len = MAX_TX_DESC_LEN;
6706
6707 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6708 mrk = nfg = 0;
6709
6710 prod = NEXT_TX(rp, prod);
6711 mapping += this_len;
6712 len -= this_len;
6713 }
6714
6715 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6716 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6717
6718 len = skb_frag_size(frag);
6719 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6720 frag->page_offset, len,
6721 DMA_TO_DEVICE);
6722
6723 rp->tx_buffs[prod].skb = NULL;
6724 rp->tx_buffs[prod].mapping = mapping;
6725
6726 niu_set_txd(rp, prod, mapping, len, 0, 0);
6727
6728 prod = NEXT_TX(rp, prod);
6729 }
6730
6731 if (prod < rp->prod)
6732 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6733 rp->prod = prod;
6734
6735 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6736
6737 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6738 netif_tx_stop_queue(txq);
6739 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6740 netif_tx_wake_queue(txq);
6741 }
6742
6743 out:
6744 return NETDEV_TX_OK;
6745
6746 out_drop:
6747 rp->tx_errors++;
6748 kfree_skb(skb);
6749 goto out;
6750 }
6751
6752 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6753 {
6754 struct niu *np = netdev_priv(dev);
6755 int err, orig_jumbo, new_jumbo;
6756
6757 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6758 return -EINVAL;
6759
6760 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6761 new_jumbo = (new_mtu > ETH_DATA_LEN);
6762
6763 dev->mtu = new_mtu;
6764
6765 if (!netif_running(dev) ||
6766 (orig_jumbo == new_jumbo))
6767 return 0;
6768
6769 niu_full_shutdown(np, dev);
6770
6771 niu_free_channels(np);
6772
6773 niu_enable_napi(np);
6774
6775 err = niu_alloc_channels(np);
6776 if (err)
6777 return err;
6778
6779 spin_lock_irq(&np->lock);
6780
6781 err = niu_init_hw(np);
6782 if (!err) {
6783 init_timer(&np->timer);
6784 np->timer.expires = jiffies + HZ;
6785 np->timer.data = (unsigned long) np;
6786 np->timer.function = niu_timer;
6787
6788 err = niu_enable_interrupts(np, 1);
6789 if (err)
6790 niu_stop_hw(np);
6791 }
6792
6793 spin_unlock_irq(&np->lock);
6794
6795 if (!err) {
6796 netif_tx_start_all_queues(dev);
6797 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6798 netif_carrier_on(dev);
6799
6800 add_timer(&np->timer);
6801 }
6802
6803 return err;
6804 }
6805
6806 static void niu_get_drvinfo(struct net_device *dev,
6807 struct ethtool_drvinfo *info)
6808 {
6809 struct niu *np = netdev_priv(dev);
6810 struct niu_vpd *vpd = &np->vpd;
6811
6812 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
6813 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
6814 snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6815 vpd->fcode_major, vpd->fcode_minor);
6816 if (np->parent->plat_type != PLAT_TYPE_NIU)
6817 strlcpy(info->bus_info, pci_name(np->pdev),
6818 sizeof(info->bus_info));
6819 }
6820
6821 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6822 {
6823 struct niu *np = netdev_priv(dev);
6824 struct niu_link_config *lp;
6825
6826 lp = &np->link_config;
6827
6828 memset(cmd, 0, sizeof(*cmd));
6829 cmd->phy_address = np->phy_addr;
6830 cmd->supported = lp->supported;
6831 cmd->advertising = lp->active_advertising;
6832 cmd->autoneg = lp->active_autoneg;
6833 ethtool_cmd_speed_set(cmd, lp->active_speed);
6834 cmd->duplex = lp->active_duplex;
6835 cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6836 cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6837 XCVR_EXTERNAL : XCVR_INTERNAL;
6838
6839 return 0;
6840 }
6841
6842 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6843 {
6844 struct niu *np = netdev_priv(dev);
6845 struct niu_link_config *lp = &np->link_config;
6846
6847 lp->advertising = cmd->advertising;
6848 lp->speed = ethtool_cmd_speed(cmd);
6849 lp->duplex = cmd->duplex;
6850 lp->autoneg = cmd->autoneg;
6851 return niu_init_link(np);
6852 }
6853
6854 static u32 niu_get_msglevel(struct net_device *dev)
6855 {
6856 struct niu *np = netdev_priv(dev);
6857 return np->msg_enable;
6858 }
6859
6860 static void niu_set_msglevel(struct net_device *dev, u32 value)
6861 {
6862 struct niu *np = netdev_priv(dev);
6863 np->msg_enable = value;
6864 }
6865
6866 static int niu_nway_reset(struct net_device *dev)
6867 {
6868 struct niu *np = netdev_priv(dev);
6869
6870 if (np->link_config.autoneg)
6871 return niu_init_link(np);
6872
6873 return 0;
6874 }
6875
6876 static int niu_get_eeprom_len(struct net_device *dev)
6877 {
6878 struct niu *np = netdev_priv(dev);
6879
6880 return np->eeprom_len;
6881 }
6882
6883 static int niu_get_eeprom(struct net_device *dev,
6884 struct ethtool_eeprom *eeprom, u8 *data)
6885 {
6886 struct niu *np = netdev_priv(dev);
6887 u32 offset, len, val;
6888
6889 offset = eeprom->offset;
6890 len = eeprom->len;
6891
6892 if (offset + len < offset)
6893 return -EINVAL;
6894 if (offset >= np->eeprom_len)
6895 return -EINVAL;
6896 if (offset + len > np->eeprom_len)
6897 len = eeprom->len = np->eeprom_len - offset;
6898
6899 if (offset & 3) {
6900 u32 b_offset, b_count;
6901
6902 b_offset = offset & 3;
6903 b_count = 4 - b_offset;
6904 if (b_count > len)
6905 b_count = len;
6906
6907 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6908 memcpy(data, ((char *)&val) + b_offset, b_count);
6909 data += b_count;
6910 len -= b_count;
6911 offset += b_count;
6912 }
6913 while (len >= 4) {
6914 val = nr64(ESPC_NCR(offset / 4));
6915 memcpy(data, &val, 4);
6916 data += 4;
6917 len -= 4;
6918 offset += 4;
6919 }
6920 if (len) {
6921 val = nr64(ESPC_NCR(offset / 4));
6922 memcpy(data, &val, len);
6923 }
6924 return 0;
6925 }
6926
6927 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6928 {
6929 switch (flow_type) {
6930 case TCP_V4_FLOW:
6931 case TCP_V6_FLOW:
6932 *pid = IPPROTO_TCP;
6933 break;
6934 case UDP_V4_FLOW:
6935 case UDP_V6_FLOW:
6936 *pid = IPPROTO_UDP;
6937 break;
6938 case SCTP_V4_FLOW:
6939 case SCTP_V6_FLOW:
6940 *pid = IPPROTO_SCTP;
6941 break;
6942 case AH_V4_FLOW:
6943 case AH_V6_FLOW:
6944 *pid = IPPROTO_AH;
6945 break;
6946 case ESP_V4_FLOW:
6947 case ESP_V6_FLOW:
6948 *pid = IPPROTO_ESP;
6949 break;
6950 default:
6951 *pid = 0;
6952 break;
6953 }
6954 }
6955
6956 static int niu_class_to_ethflow(u64 class, int *flow_type)
6957 {
6958 switch (class) {
6959 case CLASS_CODE_TCP_IPV4:
6960 *flow_type = TCP_V4_FLOW;
6961 break;
6962 case CLASS_CODE_UDP_IPV4:
6963 *flow_type = UDP_V4_FLOW;
6964 break;
6965 case CLASS_CODE_AH_ESP_IPV4:
6966 *flow_type = AH_V4_FLOW;
6967 break;
6968 case CLASS_CODE_SCTP_IPV4:
6969 *flow_type = SCTP_V4_FLOW;
6970 break;
6971 case CLASS_CODE_TCP_IPV6:
6972 *flow_type = TCP_V6_FLOW;
6973 break;
6974 case CLASS_CODE_UDP_IPV6:
6975 *flow_type = UDP_V6_FLOW;
6976 break;
6977 case CLASS_CODE_AH_ESP_IPV6:
6978 *flow_type = AH_V6_FLOW;
6979 break;
6980 case CLASS_CODE_SCTP_IPV6:
6981 *flow_type = SCTP_V6_FLOW;
6982 break;
6983 case CLASS_CODE_USER_PROG1:
6984 case CLASS_CODE_USER_PROG2:
6985 case CLASS_CODE_USER_PROG3:
6986 case CLASS_CODE_USER_PROG4:
6987 *flow_type = IP_USER_FLOW;
6988 break;
6989 default:
6990 return -EINVAL;
6991 }
6992
6993 return 0;
6994 }
6995
6996 static int niu_ethflow_to_class(int flow_type, u64 *class)
6997 {
6998 switch (flow_type) {
6999 case TCP_V4_FLOW:
7000 *class = CLASS_CODE_TCP_IPV4;
7001 break;
7002 case UDP_V4_FLOW:
7003 *class = CLASS_CODE_UDP_IPV4;
7004 break;
7005 case AH_ESP_V4_FLOW:
7006 case AH_V4_FLOW:
7007 case ESP_V4_FLOW:
7008 *class = CLASS_CODE_AH_ESP_IPV4;
7009 break;
7010 case SCTP_V4_FLOW:
7011 *class = CLASS_CODE_SCTP_IPV4;
7012 break;
7013 case TCP_V6_FLOW:
7014 *class = CLASS_CODE_TCP_IPV6;
7015 break;
7016 case UDP_V6_FLOW:
7017 *class = CLASS_CODE_UDP_IPV6;
7018 break;
7019 case AH_ESP_V6_FLOW:
7020 case AH_V6_FLOW:
7021 case ESP_V6_FLOW:
7022 *class = CLASS_CODE_AH_ESP_IPV6;
7023 break;
7024 case SCTP_V6_FLOW:
7025 *class = CLASS_CODE_SCTP_IPV6;
7026 break;
7027 default:
7028 return 0;
7029 }
7030
7031 return 1;
7032 }
7033
7034 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7035 {
7036 u64 ethflow = 0;
7037
7038 if (flow_key & FLOW_KEY_L2DA)
7039 ethflow |= RXH_L2DA;
7040 if (flow_key & FLOW_KEY_VLAN)
7041 ethflow |= RXH_VLAN;
7042 if (flow_key & FLOW_KEY_IPSA)
7043 ethflow |= RXH_IP_SRC;
7044 if (flow_key & FLOW_KEY_IPDA)
7045 ethflow |= RXH_IP_DST;
7046 if (flow_key & FLOW_KEY_PROTO)
7047 ethflow |= RXH_L3_PROTO;
7048 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7049 ethflow |= RXH_L4_B_0_1;
7050 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7051 ethflow |= RXH_L4_B_2_3;
7052
7053 return ethflow;
7054
7055 }
7056
7057 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7058 {
7059 u64 key = 0;
7060
7061 if (ethflow & RXH_L2DA)
7062 key |= FLOW_KEY_L2DA;
7063 if (ethflow & RXH_VLAN)
7064 key |= FLOW_KEY_VLAN;
7065 if (ethflow & RXH_IP_SRC)
7066 key |= FLOW_KEY_IPSA;
7067 if (ethflow & RXH_IP_DST)
7068 key |= FLOW_KEY_IPDA;
7069 if (ethflow & RXH_L3_PROTO)
7070 key |= FLOW_KEY_PROTO;
7071 if (ethflow & RXH_L4_B_0_1)
7072 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7073 if (ethflow & RXH_L4_B_2_3)
7074 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7075
7076 *flow_key = key;
7077
7078 return 1;
7079
7080 }
7081
7082 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7083 {
7084 u64 class;
7085
7086 nfc->data = 0;
7087
7088 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7089 return -EINVAL;
7090
7091 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7092 TCAM_KEY_DISC)
7093 nfc->data = RXH_DISCARD;
7094 else
7095 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7096 CLASS_CODE_USER_PROG1]);
7097 return 0;
7098 }
7099
7100 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7101 struct ethtool_rx_flow_spec *fsp)
7102 {
7103 u32 tmp;
7104 u16 prt;
7105
7106 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7107 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7108
7109 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7110 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7111
7112 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7113 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7114
7115 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7116 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7117
7118 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7119 TCAM_V4KEY2_TOS_SHIFT;
7120 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7121 TCAM_V4KEY2_TOS_SHIFT;
7122
7123 switch (fsp->flow_type) {
7124 case TCP_V4_FLOW:
7125 case UDP_V4_FLOW:
7126 case SCTP_V4_FLOW:
7127 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7128 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7129 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7130
7131 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7132 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7133 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7134
7135 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7136 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7137 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7138
7139 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7140 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7141 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7142 break;
7143 case AH_V4_FLOW:
7144 case ESP_V4_FLOW:
7145 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7146 TCAM_V4KEY2_PORT_SPI_SHIFT;
7147 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7148
7149 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7150 TCAM_V4KEY2_PORT_SPI_SHIFT;
7151 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7152 break;
7153 case IP_USER_FLOW:
7154 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7155 TCAM_V4KEY2_PORT_SPI_SHIFT;
7156 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7157
7158 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7159 TCAM_V4KEY2_PORT_SPI_SHIFT;
7160 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7161
7162 fsp->h_u.usr_ip4_spec.proto =
7163 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7164 TCAM_V4KEY2_PROTO_SHIFT;
7165 fsp->m_u.usr_ip4_spec.proto =
7166 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7167 TCAM_V4KEY2_PROTO_SHIFT;
7168
7169 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7170 break;
7171 default:
7172 break;
7173 }
7174 }
7175
7176 static int niu_get_ethtool_tcam_entry(struct niu *np,
7177 struct ethtool_rxnfc *nfc)
7178 {
7179 struct niu_parent *parent = np->parent;
7180 struct niu_tcam_entry *tp;
7181 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7182 u16 idx;
7183 u64 class;
7184 int ret = 0;
7185
7186 idx = tcam_get_index(np, (u16)nfc->fs.location);
7187
7188 tp = &parent->tcam[idx];
7189 if (!tp->valid) {
7190 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7191 parent->index, (u16)nfc->fs.location, idx);
7192 return -EINVAL;
7193 }
7194
7195 /* fill the flow spec entry */
7196 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7197 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7198 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7199 if (ret < 0) {
7200 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7201 parent->index);
7202 goto out;
7203 }
7204
7205 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7206 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7207 TCAM_V4KEY2_PROTO_SHIFT;
7208 if (proto == IPPROTO_ESP) {
7209 if (fsp->flow_type == AH_V4_FLOW)
7210 fsp->flow_type = ESP_V4_FLOW;
7211 else
7212 fsp->flow_type = ESP_V6_FLOW;
7213 }
7214 }
7215
7216 switch (fsp->flow_type) {
7217 case TCP_V4_FLOW:
7218 case UDP_V4_FLOW:
7219 case SCTP_V4_FLOW:
7220 case AH_V4_FLOW:
7221 case ESP_V4_FLOW:
7222 niu_get_ip4fs_from_tcam_key(tp, fsp);
7223 break;
7224 case TCP_V6_FLOW:
7225 case UDP_V6_FLOW:
7226 case SCTP_V6_FLOW:
7227 case AH_V6_FLOW:
7228 case ESP_V6_FLOW:
7229 /* Not yet implemented */
7230 ret = -EINVAL;
7231 break;
7232 case IP_USER_FLOW:
7233 niu_get_ip4fs_from_tcam_key(tp, fsp);
7234 break;
7235 default:
7236 ret = -EINVAL;
7237 break;
7238 }
7239
7240 if (ret < 0)
7241 goto out;
7242
7243 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7244 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7245 else
7246 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7247 TCAM_ASSOCDATA_OFFSET_SHIFT;
7248
7249 /* put the tcam size here */
7250 nfc->data = tcam_get_size(np);
7251 out:
7252 return ret;
7253 }
7254
7255 static int niu_get_ethtool_tcam_all(struct niu *np,
7256 struct ethtool_rxnfc *nfc,
7257 u32 *rule_locs)
7258 {
7259 struct niu_parent *parent = np->parent;
7260 struct niu_tcam_entry *tp;
7261 int i, idx, cnt;
7262 unsigned long flags;
7263 int ret = 0;
7264
7265 /* put the tcam size here */
7266 nfc->data = tcam_get_size(np);
7267
7268 niu_lock_parent(np, flags);
7269 for (cnt = 0, i = 0; i < nfc->data; i++) {
7270 idx = tcam_get_index(np, i);
7271 tp = &parent->tcam[idx];
7272 if (!tp->valid)
7273 continue;
7274 if (cnt == nfc->rule_cnt) {
7275 ret = -EMSGSIZE;
7276 break;
7277 }
7278 rule_locs[cnt] = i;
7279 cnt++;
7280 }
7281 niu_unlock_parent(np, flags);
7282
7283 nfc->rule_cnt = cnt;
7284
7285 return ret;
7286 }
7287
7288 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7289 u32 *rule_locs)
7290 {
7291 struct niu *np = netdev_priv(dev);
7292 int ret = 0;
7293
7294 switch (cmd->cmd) {
7295 case ETHTOOL_GRXFH:
7296 ret = niu_get_hash_opts(np, cmd);
7297 break;
7298 case ETHTOOL_GRXRINGS:
7299 cmd->data = np->num_rx_rings;
7300 break;
7301 case ETHTOOL_GRXCLSRLCNT:
7302 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7303 break;
7304 case ETHTOOL_GRXCLSRULE:
7305 ret = niu_get_ethtool_tcam_entry(np, cmd);
7306 break;
7307 case ETHTOOL_GRXCLSRLALL:
7308 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7309 break;
7310 default:
7311 ret = -EINVAL;
7312 break;
7313 }
7314
7315 return ret;
7316 }
7317
7318 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7319 {
7320 u64 class;
7321 u64 flow_key = 0;
7322 unsigned long flags;
7323
7324 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7325 return -EINVAL;
7326
7327 if (class < CLASS_CODE_USER_PROG1 ||
7328 class > CLASS_CODE_SCTP_IPV6)
7329 return -EINVAL;
7330
7331 if (nfc->data & RXH_DISCARD) {
7332 niu_lock_parent(np, flags);
7333 flow_key = np->parent->tcam_key[class -
7334 CLASS_CODE_USER_PROG1];
7335 flow_key |= TCAM_KEY_DISC;
7336 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7337 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7338 niu_unlock_parent(np, flags);
7339 return 0;
7340 } else {
7341 /* Discard was set before, but is not set now */
7342 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7343 TCAM_KEY_DISC) {
7344 niu_lock_parent(np, flags);
7345 flow_key = np->parent->tcam_key[class -
7346 CLASS_CODE_USER_PROG1];
7347 flow_key &= ~TCAM_KEY_DISC;
7348 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7349 flow_key);
7350 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7351 flow_key;
7352 niu_unlock_parent(np, flags);
7353 }
7354 }
7355
7356 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7357 return -EINVAL;
7358
7359 niu_lock_parent(np, flags);
7360 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7361 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7362 niu_unlock_parent(np, flags);
7363
7364 return 0;
7365 }
7366
7367 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7368 struct niu_tcam_entry *tp,
7369 int l2_rdc_tab, u64 class)
7370 {
7371 u8 pid = 0;
7372 u32 sip, dip, sipm, dipm, spi, spim;
7373 u16 sport, dport, spm, dpm;
7374
7375 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7376 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7377 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7378 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7379
7380 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7381 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7382 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7383 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7384
7385 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7386 tp->key[3] |= dip;
7387
7388 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7389 tp->key_mask[3] |= dipm;
7390
7391 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7392 TCAM_V4KEY2_TOS_SHIFT);
7393 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7394 TCAM_V4KEY2_TOS_SHIFT);
7395 switch (fsp->flow_type) {
7396 case TCP_V4_FLOW:
7397 case UDP_V4_FLOW:
7398 case SCTP_V4_FLOW:
7399 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7400 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7401 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7402 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7403
7404 tp->key[2] |= (((u64)sport << 16) | dport);
7405 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7406 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7407 break;
7408 case AH_V4_FLOW:
7409 case ESP_V4_FLOW:
7410 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7411 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7412
7413 tp->key[2] |= spi;
7414 tp->key_mask[2] |= spim;
7415 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7416 break;
7417 case IP_USER_FLOW:
7418 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7419 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7420
7421 tp->key[2] |= spi;
7422 tp->key_mask[2] |= spim;
7423 pid = fsp->h_u.usr_ip4_spec.proto;
7424 break;
7425 default:
7426 break;
7427 }
7428
7429 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7430 if (pid) {
7431 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7432 }
7433 }
7434
7435 static int niu_add_ethtool_tcam_entry(struct niu *np,
7436 struct ethtool_rxnfc *nfc)
7437 {
7438 struct niu_parent *parent = np->parent;
7439 struct niu_tcam_entry *tp;
7440 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7441 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7442 int l2_rdc_table = rdc_table->first_table_num;
7443 u16 idx;
7444 u64 class;
7445 unsigned long flags;
7446 int err, ret;
7447
7448 ret = 0;
7449
7450 idx = nfc->fs.location;
7451 if (idx >= tcam_get_size(np))
7452 return -EINVAL;
7453
7454 if (fsp->flow_type == IP_USER_FLOW) {
7455 int i;
7456 int add_usr_cls = 0;
7457 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7458 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7459
7460 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7461 return -EINVAL;
7462
7463 niu_lock_parent(np, flags);
7464
7465 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7466 if (parent->l3_cls[i]) {
7467 if (uspec->proto == parent->l3_cls_pid[i]) {
7468 class = parent->l3_cls[i];
7469 parent->l3_cls_refcnt[i]++;
7470 add_usr_cls = 1;
7471 break;
7472 }
7473 } else {
7474 /* Program new user IP class */
7475 switch (i) {
7476 case 0:
7477 class = CLASS_CODE_USER_PROG1;
7478 break;
7479 case 1:
7480 class = CLASS_CODE_USER_PROG2;
7481 break;
7482 case 2:
7483 class = CLASS_CODE_USER_PROG3;
7484 break;
7485 case 3:
7486 class = CLASS_CODE_USER_PROG4;
7487 break;
7488 default:
7489 break;
7490 }
7491 ret = tcam_user_ip_class_set(np, class, 0,
7492 uspec->proto,
7493 uspec->tos,
7494 umask->tos);
7495 if (ret)
7496 goto out;
7497
7498 ret = tcam_user_ip_class_enable(np, class, 1);
7499 if (ret)
7500 goto out;
7501 parent->l3_cls[i] = class;
7502 parent->l3_cls_pid[i] = uspec->proto;
7503 parent->l3_cls_refcnt[i]++;
7504 add_usr_cls = 1;
7505 break;
7506 }
7507 }
7508 if (!add_usr_cls) {
7509 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7510 parent->index, __func__, uspec->proto);
7511 ret = -EINVAL;
7512 goto out;
7513 }
7514 niu_unlock_parent(np, flags);
7515 } else {
7516 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7517 return -EINVAL;
7518 }
7519 }
7520
7521 niu_lock_parent(np, flags);
7522
7523 idx = tcam_get_index(np, idx);
7524 tp = &parent->tcam[idx];
7525
7526 memset(tp, 0, sizeof(*tp));
7527
7528 /* fill in the tcam key and mask */
7529 switch (fsp->flow_type) {
7530 case TCP_V4_FLOW:
7531 case UDP_V4_FLOW:
7532 case SCTP_V4_FLOW:
7533 case AH_V4_FLOW:
7534 case ESP_V4_FLOW:
7535 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7536 break;
7537 case TCP_V6_FLOW:
7538 case UDP_V6_FLOW:
7539 case SCTP_V6_FLOW:
7540 case AH_V6_FLOW:
7541 case ESP_V6_FLOW:
7542 /* Not yet implemented */
7543 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7544 parent->index, __func__, fsp->flow_type);
7545 ret = -EINVAL;
7546 goto out;
7547 case IP_USER_FLOW:
7548 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7549 break;
7550 default:
7551 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7552 parent->index, __func__, fsp->flow_type);
7553 ret = -EINVAL;
7554 goto out;
7555 }
7556
7557 /* fill in the assoc data */
7558 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7559 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7560 } else {
7561 if (fsp->ring_cookie >= np->num_rx_rings) {
7562 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7563 parent->index, __func__,
7564 (long long)fsp->ring_cookie);
7565 ret = -EINVAL;
7566 goto out;
7567 }
7568 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7569 (fsp->ring_cookie <<
7570 TCAM_ASSOCDATA_OFFSET_SHIFT));
7571 }
7572
7573 err = tcam_write(np, idx, tp->key, tp->key_mask);
7574 if (err) {
7575 ret = -EINVAL;
7576 goto out;
7577 }
7578 err = tcam_assoc_write(np, idx, tp->assoc_data);
7579 if (err) {
7580 ret = -EINVAL;
7581 goto out;
7582 }
7583
7584 /* validate the entry */
7585 tp->valid = 1;
7586 np->clas.tcam_valid_entries++;
7587 out:
7588 niu_unlock_parent(np, flags);
7589
7590 return ret;
7591 }
7592
7593 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7594 {
7595 struct niu_parent *parent = np->parent;
7596 struct niu_tcam_entry *tp;
7597 u16 idx;
7598 unsigned long flags;
7599 u64 class;
7600 int ret = 0;
7601
7602 if (loc >= tcam_get_size(np))
7603 return -EINVAL;
7604
7605 niu_lock_parent(np, flags);
7606
7607 idx = tcam_get_index(np, loc);
7608 tp = &parent->tcam[idx];
7609
7610 /* if the entry is of a user defined class, then update*/
7611 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7612 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7613
7614 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7615 int i;
7616 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7617 if (parent->l3_cls[i] == class) {
7618 parent->l3_cls_refcnt[i]--;
7619 if (!parent->l3_cls_refcnt[i]) {
7620 /* disable class */
7621 ret = tcam_user_ip_class_enable(np,
7622 class,
7623 0);
7624 if (ret)
7625 goto out;
7626 parent->l3_cls[i] = 0;
7627 parent->l3_cls_pid[i] = 0;
7628 }
7629 break;
7630 }
7631 }
7632 if (i == NIU_L3_PROG_CLS) {
7633 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7634 parent->index, __func__,
7635 (unsigned long long)class);
7636 ret = -EINVAL;
7637 goto out;
7638 }
7639 }
7640
7641 ret = tcam_flush(np, idx);
7642 if (ret)
7643 goto out;
7644
7645 /* invalidate the entry */
7646 tp->valid = 0;
7647 np->clas.tcam_valid_entries--;
7648 out:
7649 niu_unlock_parent(np, flags);
7650
7651 return ret;
7652 }
7653
7654 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7655 {
7656 struct niu *np = netdev_priv(dev);
7657 int ret = 0;
7658
7659 switch (cmd->cmd) {
7660 case ETHTOOL_SRXFH:
7661 ret = niu_set_hash_opts(np, cmd);
7662 break;
7663 case ETHTOOL_SRXCLSRLINS:
7664 ret = niu_add_ethtool_tcam_entry(np, cmd);
7665 break;
7666 case ETHTOOL_SRXCLSRLDEL:
7667 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7668 break;
7669 default:
7670 ret = -EINVAL;
7671 break;
7672 }
7673
7674 return ret;
7675 }
7676
7677 static const struct {
7678 const char string[ETH_GSTRING_LEN];
7679 } niu_xmac_stat_keys[] = {
7680 { "tx_frames" },
7681 { "tx_bytes" },
7682 { "tx_fifo_errors" },
7683 { "tx_overflow_errors" },
7684 { "tx_max_pkt_size_errors" },
7685 { "tx_underflow_errors" },
7686 { "rx_local_faults" },
7687 { "rx_remote_faults" },
7688 { "rx_link_faults" },
7689 { "rx_align_errors" },
7690 { "rx_frags" },
7691 { "rx_mcasts" },
7692 { "rx_bcasts" },
7693 { "rx_hist_cnt1" },
7694 { "rx_hist_cnt2" },
7695 { "rx_hist_cnt3" },
7696 { "rx_hist_cnt4" },
7697 { "rx_hist_cnt5" },
7698 { "rx_hist_cnt6" },
7699 { "rx_hist_cnt7" },
7700 { "rx_octets" },
7701 { "rx_code_violations" },
7702 { "rx_len_errors" },
7703 { "rx_crc_errors" },
7704 { "rx_underflows" },
7705 { "rx_overflows" },
7706 { "pause_off_state" },
7707 { "pause_on_state" },
7708 { "pause_received" },
7709 };
7710
7711 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7712
7713 static const struct {
7714 const char string[ETH_GSTRING_LEN];
7715 } niu_bmac_stat_keys[] = {
7716 { "tx_underflow_errors" },
7717 { "tx_max_pkt_size_errors" },
7718 { "tx_bytes" },
7719 { "tx_frames" },
7720 { "rx_overflows" },
7721 { "rx_frames" },
7722 { "rx_align_errors" },
7723 { "rx_crc_errors" },
7724 { "rx_len_errors" },
7725 { "pause_off_state" },
7726 { "pause_on_state" },
7727 { "pause_received" },
7728 };
7729
7730 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7731
7732 static const struct {
7733 const char string[ETH_GSTRING_LEN];
7734 } niu_rxchan_stat_keys[] = {
7735 { "rx_channel" },
7736 { "rx_packets" },
7737 { "rx_bytes" },
7738 { "rx_dropped" },
7739 { "rx_errors" },
7740 };
7741
7742 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7743
7744 static const struct {
7745 const char string[ETH_GSTRING_LEN];
7746 } niu_txchan_stat_keys[] = {
7747 { "tx_channel" },
7748 { "tx_packets" },
7749 { "tx_bytes" },
7750 { "tx_errors" },
7751 };
7752
7753 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7754
7755 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7756 {
7757 struct niu *np = netdev_priv(dev);
7758 int i;
7759
7760 if (stringset != ETH_SS_STATS)
7761 return;
7762
7763 if (np->flags & NIU_FLAGS_XMAC) {
7764 memcpy(data, niu_xmac_stat_keys,
7765 sizeof(niu_xmac_stat_keys));
7766 data += sizeof(niu_xmac_stat_keys);
7767 } else {
7768 memcpy(data, niu_bmac_stat_keys,
7769 sizeof(niu_bmac_stat_keys));
7770 data += sizeof(niu_bmac_stat_keys);
7771 }
7772 for (i = 0; i < np->num_rx_rings; i++) {
7773 memcpy(data, niu_rxchan_stat_keys,
7774 sizeof(niu_rxchan_stat_keys));
7775 data += sizeof(niu_rxchan_stat_keys);
7776 }
7777 for (i = 0; i < np->num_tx_rings; i++) {
7778 memcpy(data, niu_txchan_stat_keys,
7779 sizeof(niu_txchan_stat_keys));
7780 data += sizeof(niu_txchan_stat_keys);
7781 }
7782 }
7783
7784 static int niu_get_sset_count(struct net_device *dev, int stringset)
7785 {
7786 struct niu *np = netdev_priv(dev);
7787
7788 if (stringset != ETH_SS_STATS)
7789 return -EINVAL;
7790
7791 return (np->flags & NIU_FLAGS_XMAC ?
7792 NUM_XMAC_STAT_KEYS :
7793 NUM_BMAC_STAT_KEYS) +
7794 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7795 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7796 }
7797
7798 static void niu_get_ethtool_stats(struct net_device *dev,
7799 struct ethtool_stats *stats, u64 *data)
7800 {
7801 struct niu *np = netdev_priv(dev);
7802 int i;
7803
7804 niu_sync_mac_stats(np);
7805 if (np->flags & NIU_FLAGS_XMAC) {
7806 memcpy(data, &np->mac_stats.xmac,
7807 sizeof(struct niu_xmac_stats));
7808 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7809 } else {
7810 memcpy(data, &np->mac_stats.bmac,
7811 sizeof(struct niu_bmac_stats));
7812 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7813 }
7814 for (i = 0; i < np->num_rx_rings; i++) {
7815 struct rx_ring_info *rp = &np->rx_rings[i];
7816
7817 niu_sync_rx_discard_stats(np, rp, 0);
7818
7819 data[0] = rp->rx_channel;
7820 data[1] = rp->rx_packets;
7821 data[2] = rp->rx_bytes;
7822 data[3] = rp->rx_dropped;
7823 data[4] = rp->rx_errors;
7824 data += 5;
7825 }
7826 for (i = 0; i < np->num_tx_rings; i++) {
7827 struct tx_ring_info *rp = &np->tx_rings[i];
7828
7829 data[0] = rp->tx_channel;
7830 data[1] = rp->tx_packets;
7831 data[2] = rp->tx_bytes;
7832 data[3] = rp->tx_errors;
7833 data += 4;
7834 }
7835 }
7836
7837 static u64 niu_led_state_save(struct niu *np)
7838 {
7839 if (np->flags & NIU_FLAGS_XMAC)
7840 return nr64_mac(XMAC_CONFIG);
7841 else
7842 return nr64_mac(BMAC_XIF_CONFIG);
7843 }
7844
7845 static void niu_led_state_restore(struct niu *np, u64 val)
7846 {
7847 if (np->flags & NIU_FLAGS_XMAC)
7848 nw64_mac(XMAC_CONFIG, val);
7849 else
7850 nw64_mac(BMAC_XIF_CONFIG, val);
7851 }
7852
7853 static void niu_force_led(struct niu *np, int on)
7854 {
7855 u64 val, reg, bit;
7856
7857 if (np->flags & NIU_FLAGS_XMAC) {
7858 reg = XMAC_CONFIG;
7859 bit = XMAC_CONFIG_FORCE_LED_ON;
7860 } else {
7861 reg = BMAC_XIF_CONFIG;
7862 bit = BMAC_XIF_CONFIG_LINK_LED;
7863 }
7864
7865 val = nr64_mac(reg);
7866 if (on)
7867 val |= bit;
7868 else
7869 val &= ~bit;
7870 nw64_mac(reg, val);
7871 }
7872
7873 static int niu_set_phys_id(struct net_device *dev,
7874 enum ethtool_phys_id_state state)
7875
7876 {
7877 struct niu *np = netdev_priv(dev);
7878
7879 if (!netif_running(dev))
7880 return -EAGAIN;
7881
7882 switch (state) {
7883 case ETHTOOL_ID_ACTIVE:
7884 np->orig_led_state = niu_led_state_save(np);
7885 return 1; /* cycle on/off once per second */
7886
7887 case ETHTOOL_ID_ON:
7888 niu_force_led(np, 1);
7889 break;
7890
7891 case ETHTOOL_ID_OFF:
7892 niu_force_led(np, 0);
7893 break;
7894
7895 case ETHTOOL_ID_INACTIVE:
7896 niu_led_state_restore(np, np->orig_led_state);
7897 }
7898
7899 return 0;
7900 }
7901
7902 static const struct ethtool_ops niu_ethtool_ops = {
7903 .get_drvinfo = niu_get_drvinfo,
7904 .get_link = ethtool_op_get_link,
7905 .get_msglevel = niu_get_msglevel,
7906 .set_msglevel = niu_set_msglevel,
7907 .nway_reset = niu_nway_reset,
7908 .get_eeprom_len = niu_get_eeprom_len,
7909 .get_eeprom = niu_get_eeprom,
7910 .get_settings = niu_get_settings,
7911 .set_settings = niu_set_settings,
7912 .get_strings = niu_get_strings,
7913 .get_sset_count = niu_get_sset_count,
7914 .get_ethtool_stats = niu_get_ethtool_stats,
7915 .set_phys_id = niu_set_phys_id,
7916 .get_rxnfc = niu_get_nfc,
7917 .set_rxnfc = niu_set_nfc,
7918 };
7919
7920 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7921 int ldg, int ldn)
7922 {
7923 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7924 return -EINVAL;
7925 if (ldn < 0 || ldn > LDN_MAX)
7926 return -EINVAL;
7927
7928 parent->ldg_map[ldn] = ldg;
7929
7930 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7931 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7932 * the firmware, and we're not supposed to change them.
7933 * Validate the mapping, because if it's wrong we probably
7934 * won't get any interrupts and that's painful to debug.
7935 */
7936 if (nr64(LDG_NUM(ldn)) != ldg) {
7937 dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7938 np->port, ldn, ldg,
7939 (unsigned long long) nr64(LDG_NUM(ldn)));
7940 return -EINVAL;
7941 }
7942 } else
7943 nw64(LDG_NUM(ldn), ldg);
7944
7945 return 0;
7946 }
7947
7948 static int niu_set_ldg_timer_res(struct niu *np, int res)
7949 {
7950 if (res < 0 || res > LDG_TIMER_RES_VAL)
7951 return -EINVAL;
7952
7953
7954 nw64(LDG_TIMER_RES, res);
7955
7956 return 0;
7957 }
7958
7959 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7960 {
7961 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7962 (func < 0 || func > 3) ||
7963 (vector < 0 || vector > 0x1f))
7964 return -EINVAL;
7965
7966 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7967
7968 return 0;
7969 }
7970
7971 static int niu_pci_eeprom_read(struct niu *np, u32 addr)
7972 {
7973 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7974 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7975 int limit;
7976
7977 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7978 return -EINVAL;
7979
7980 frame = frame_base;
7981 nw64(ESPC_PIO_STAT, frame);
7982 limit = 64;
7983 do {
7984 udelay(5);
7985 frame = nr64(ESPC_PIO_STAT);
7986 if (frame & ESPC_PIO_STAT_READ_END)
7987 break;
7988 } while (limit--);
7989 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7990 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7991 (unsigned long long) frame);
7992 return -ENODEV;
7993 }
7994
7995 frame = frame_base;
7996 nw64(ESPC_PIO_STAT, frame);
7997 limit = 64;
7998 do {
7999 udelay(5);
8000 frame = nr64(ESPC_PIO_STAT);
8001 if (frame & ESPC_PIO_STAT_READ_END)
8002 break;
8003 } while (limit--);
8004 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8005 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8006 (unsigned long long) frame);
8007 return -ENODEV;
8008 }
8009
8010 frame = nr64(ESPC_PIO_STAT);
8011 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8012 }
8013
8014 static int niu_pci_eeprom_read16(struct niu *np, u32 off)
8015 {
8016 int err = niu_pci_eeprom_read(np, off);
8017 u16 val;
8018
8019 if (err < 0)
8020 return err;
8021 val = (err << 8);
8022 err = niu_pci_eeprom_read(np, off + 1);
8023 if (err < 0)
8024 return err;
8025 val |= (err & 0xff);
8026
8027 return val;
8028 }
8029
8030 static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8031 {
8032 int err = niu_pci_eeprom_read(np, off);
8033 u16 val;
8034
8035 if (err < 0)
8036 return err;
8037
8038 val = (err & 0xff);
8039 err = niu_pci_eeprom_read(np, off + 1);
8040 if (err < 0)
8041 return err;
8042
8043 val |= (err & 0xff) << 8;
8044
8045 return val;
8046 }
8047
8048 static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
8049 int namebuf_len)
8050 {
8051 int i;
8052
8053 for (i = 0; i < namebuf_len; i++) {
8054 int err = niu_pci_eeprom_read(np, off + i);
8055 if (err < 0)
8056 return err;
8057 *namebuf++ = err;
8058 if (!err)
8059 break;
8060 }
8061 if (i >= namebuf_len)
8062 return -EINVAL;
8063
8064 return i + 1;
8065 }
8066
8067 static void niu_vpd_parse_version(struct niu *np)
8068 {
8069 struct niu_vpd *vpd = &np->vpd;
8070 int len = strlen(vpd->version) + 1;
8071 const char *s = vpd->version;
8072 int i;
8073
8074 for (i = 0; i < len - 5; i++) {
8075 if (!strncmp(s + i, "FCode ", 6))
8076 break;
8077 }
8078 if (i >= len - 5)
8079 return;
8080
8081 s += i + 5;
8082 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8083
8084 netif_printk(np, probe, KERN_DEBUG, np->dev,
8085 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8086 vpd->fcode_major, vpd->fcode_minor);
8087 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8088 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8089 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8090 np->flags |= NIU_FLAGS_VPD_VALID;
8091 }
8092
8093 /* ESPC_PIO_EN_ENABLE must be set */
8094 static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
8095 {
8096 unsigned int found_mask = 0;
8097 #define FOUND_MASK_MODEL 0x00000001
8098 #define FOUND_MASK_BMODEL 0x00000002
8099 #define FOUND_MASK_VERS 0x00000004
8100 #define FOUND_MASK_MAC 0x00000008
8101 #define FOUND_MASK_NMAC 0x00000010
8102 #define FOUND_MASK_PHY 0x00000020
8103 #define FOUND_MASK_ALL 0x0000003f
8104
8105 netif_printk(np, probe, KERN_DEBUG, np->dev,
8106 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8107 while (start < end) {
8108 int len, err, prop_len;
8109 char namebuf[64];
8110 u8 *prop_buf;
8111 int max_len;
8112
8113 if (found_mask == FOUND_MASK_ALL) {
8114 niu_vpd_parse_version(np);
8115 return 1;
8116 }
8117
8118 err = niu_pci_eeprom_read(np, start + 2);
8119 if (err < 0)
8120 return err;
8121 len = err;
8122 start += 3;
8123
8124 prop_len = niu_pci_eeprom_read(np, start + 4);
8125 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8126 if (err < 0)
8127 return err;
8128
8129 prop_buf = NULL;
8130 max_len = 0;
8131 if (!strcmp(namebuf, "model")) {
8132 prop_buf = np->vpd.model;
8133 max_len = NIU_VPD_MODEL_MAX;
8134 found_mask |= FOUND_MASK_MODEL;
8135 } else if (!strcmp(namebuf, "board-model")) {
8136 prop_buf = np->vpd.board_model;
8137 max_len = NIU_VPD_BD_MODEL_MAX;
8138 found_mask |= FOUND_MASK_BMODEL;
8139 } else if (!strcmp(namebuf, "version")) {
8140 prop_buf = np->vpd.version;
8141 max_len = NIU_VPD_VERSION_MAX;
8142 found_mask |= FOUND_MASK_VERS;
8143 } else if (!strcmp(namebuf, "local-mac-address")) {
8144 prop_buf = np->vpd.local_mac;
8145 max_len = ETH_ALEN;
8146 found_mask |= FOUND_MASK_MAC;
8147 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8148 prop_buf = &np->vpd.mac_num;
8149 max_len = 1;
8150 found_mask |= FOUND_MASK_NMAC;
8151 } else if (!strcmp(namebuf, "phy-type")) {
8152 prop_buf = np->vpd.phy_type;
8153 max_len = NIU_VPD_PHY_TYPE_MAX;
8154 found_mask |= FOUND_MASK_PHY;
8155 }
8156
8157 if (max_len && prop_len > max_len) {
8158 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8159 return -EINVAL;
8160 }
8161
8162 if (prop_buf) {
8163 u32 off = start + 5 + err;
8164 int i;
8165
8166 netif_printk(np, probe, KERN_DEBUG, np->dev,
8167 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8168 namebuf, prop_len);
8169 for (i = 0; i < prop_len; i++)
8170 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8171 }
8172
8173 start += len;
8174 }
8175
8176 return 0;
8177 }
8178
8179 /* ESPC_PIO_EN_ENABLE must be set */
8180 static void niu_pci_vpd_fetch(struct niu *np, u32 start)
8181 {
8182 u32 offset;
8183 int err;
8184
8185 err = niu_pci_eeprom_read16_swp(np, start + 1);
8186 if (err < 0)
8187 return;
8188
8189 offset = err + 3;
8190
8191 while (start + offset < ESPC_EEPROM_SIZE) {
8192 u32 here = start + offset;
8193 u32 end;
8194
8195 err = niu_pci_eeprom_read(np, here);
8196 if (err != 0x90)
8197 return;
8198
8199 err = niu_pci_eeprom_read16_swp(np, here + 1);
8200 if (err < 0)
8201 return;
8202
8203 here = start + offset + 3;
8204 end = start + offset + err;
8205
8206 offset += err;
8207
8208 err = niu_pci_vpd_scan_props(np, here, end);
8209 if (err < 0 || err == 1)
8210 return;
8211 }
8212 }
8213
8214 /* ESPC_PIO_EN_ENABLE must be set */
8215 static u32 niu_pci_vpd_offset(struct niu *np)
8216 {
8217 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8218 int err;
8219
8220 while (start < end) {
8221 ret = start;
8222
8223 /* ROM header signature? */
8224 err = niu_pci_eeprom_read16(np, start + 0);
8225 if (err != 0x55aa)
8226 return 0;
8227
8228 /* Apply offset to PCI data structure. */
8229 err = niu_pci_eeprom_read16(np, start + 23);
8230 if (err < 0)
8231 return 0;
8232 start += err;
8233
8234 /* Check for "PCIR" signature. */
8235 err = niu_pci_eeprom_read16(np, start + 0);
8236 if (err != 0x5043)
8237 return 0;
8238 err = niu_pci_eeprom_read16(np, start + 2);
8239 if (err != 0x4952)
8240 return 0;
8241
8242 /* Check for OBP image type. */
8243 err = niu_pci_eeprom_read(np, start + 20);
8244 if (err < 0)
8245 return 0;
8246 if (err != 0x01) {
8247 err = niu_pci_eeprom_read(np, ret + 2);
8248 if (err < 0)
8249 return 0;
8250
8251 start = ret + (err * 512);
8252 continue;
8253 }
8254
8255 err = niu_pci_eeprom_read16_swp(np, start + 8);
8256 if (err < 0)
8257 return err;
8258 ret += err;
8259
8260 err = niu_pci_eeprom_read(np, ret + 0);
8261 if (err != 0x82)
8262 return 0;
8263
8264 return ret;
8265 }
8266
8267 return 0;
8268 }
8269
8270 static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
8271 {
8272 if (!strcmp(phy_prop, "mif")) {
8273 /* 1G copper, MII */
8274 np->flags &= ~(NIU_FLAGS_FIBER |
8275 NIU_FLAGS_10G);
8276 np->mac_xcvr = MAC_XCVR_MII;
8277 } else if (!strcmp(phy_prop, "xgf")) {
8278 /* 10G fiber, XPCS */
8279 np->flags |= (NIU_FLAGS_10G |
8280 NIU_FLAGS_FIBER);
8281 np->mac_xcvr = MAC_XCVR_XPCS;
8282 } else if (!strcmp(phy_prop, "pcs")) {
8283 /* 1G fiber, PCS */
8284 np->flags &= ~NIU_FLAGS_10G;
8285 np->flags |= NIU_FLAGS_FIBER;
8286 np->mac_xcvr = MAC_XCVR_PCS;
8287 } else if (!strcmp(phy_prop, "xgc")) {
8288 /* 10G copper, XPCS */
8289 np->flags |= NIU_FLAGS_10G;
8290 np->flags &= ~NIU_FLAGS_FIBER;
8291 np->mac_xcvr = MAC_XCVR_XPCS;
8292 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8293 /* 10G Serdes or 1G Serdes, default to 10G */
8294 np->flags |= NIU_FLAGS_10G;
8295 np->flags &= ~NIU_FLAGS_FIBER;
8296 np->flags |= NIU_FLAGS_XCVR_SERDES;
8297 np->mac_xcvr = MAC_XCVR_XPCS;
8298 } else {
8299 return -EINVAL;
8300 }
8301 return 0;
8302 }
8303
8304 static int niu_pci_vpd_get_nports(struct niu *np)
8305 {
8306 int ports = 0;
8307
8308 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8309 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8310 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8311 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8312 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8313 ports = 4;
8314 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8315 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8316 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8317 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8318 ports = 2;
8319 }
8320
8321 return ports;
8322 }
8323
8324 static void niu_pci_vpd_validate(struct niu *np)
8325 {
8326 struct net_device *dev = np->dev;
8327 struct niu_vpd *vpd = &np->vpd;
8328 u8 val8;
8329
8330 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8331 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8332
8333 np->flags &= ~NIU_FLAGS_VPD_VALID;
8334 return;
8335 }
8336
8337 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8338 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8339 np->flags |= NIU_FLAGS_10G;
8340 np->flags &= ~NIU_FLAGS_FIBER;
8341 np->flags |= NIU_FLAGS_XCVR_SERDES;
8342 np->mac_xcvr = MAC_XCVR_PCS;
8343 if (np->port > 1) {
8344 np->flags |= NIU_FLAGS_FIBER;
8345 np->flags &= ~NIU_FLAGS_10G;
8346 }
8347 if (np->flags & NIU_FLAGS_10G)
8348 np->mac_xcvr = MAC_XCVR_XPCS;
8349 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8350 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8351 NIU_FLAGS_HOTPLUG_PHY);
8352 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8353 dev_err(np->device, "Illegal phy string [%s]\n",
8354 np->vpd.phy_type);
8355 dev_err(np->device, "Falling back to SPROM\n");
8356 np->flags &= ~NIU_FLAGS_VPD_VALID;
8357 return;
8358 }
8359
8360 memcpy(dev->dev_addr, vpd->local_mac, ETH_ALEN);
8361
8362 val8 = dev->dev_addr[5];
8363 dev->dev_addr[5] += np->port;
8364 if (dev->dev_addr[5] < val8)
8365 dev->dev_addr[4]++;
8366 }
8367
8368 static int niu_pci_probe_sprom(struct niu *np)
8369 {
8370 struct net_device *dev = np->dev;
8371 int len, i;
8372 u64 val, sum;
8373 u8 val8;
8374
8375 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8376 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8377 len = val / 4;
8378
8379 np->eeprom_len = len;
8380
8381 netif_printk(np, probe, KERN_DEBUG, np->dev,
8382 "SPROM: Image size %llu\n", (unsigned long long)val);
8383
8384 sum = 0;
8385 for (i = 0; i < len; i++) {
8386 val = nr64(ESPC_NCR(i));
8387 sum += (val >> 0) & 0xff;
8388 sum += (val >> 8) & 0xff;
8389 sum += (val >> 16) & 0xff;
8390 sum += (val >> 24) & 0xff;
8391 }
8392 netif_printk(np, probe, KERN_DEBUG, np->dev,
8393 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8394 if ((sum & 0xff) != 0xab) {
8395 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8396 return -EINVAL;
8397 }
8398
8399 val = nr64(ESPC_PHY_TYPE);
8400 switch (np->port) {
8401 case 0:
8402 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8403 ESPC_PHY_TYPE_PORT0_SHIFT;
8404 break;
8405 case 1:
8406 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8407 ESPC_PHY_TYPE_PORT1_SHIFT;
8408 break;
8409 case 2:
8410 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8411 ESPC_PHY_TYPE_PORT2_SHIFT;
8412 break;
8413 case 3:
8414 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8415 ESPC_PHY_TYPE_PORT3_SHIFT;
8416 break;
8417 default:
8418 dev_err(np->device, "Bogus port number %u\n",
8419 np->port);
8420 return -EINVAL;
8421 }
8422 netif_printk(np, probe, KERN_DEBUG, np->dev,
8423 "SPROM: PHY type %x\n", val8);
8424
8425 switch (val8) {
8426 case ESPC_PHY_TYPE_1G_COPPER:
8427 /* 1G copper, MII */
8428 np->flags &= ~(NIU_FLAGS_FIBER |
8429 NIU_FLAGS_10G);
8430 np->mac_xcvr = MAC_XCVR_MII;
8431 break;
8432
8433 case ESPC_PHY_TYPE_1G_FIBER:
8434 /* 1G fiber, PCS */
8435 np->flags &= ~NIU_FLAGS_10G;
8436 np->flags |= NIU_FLAGS_FIBER;
8437 np->mac_xcvr = MAC_XCVR_PCS;
8438 break;
8439
8440 case ESPC_PHY_TYPE_10G_COPPER:
8441 /* 10G copper, XPCS */
8442 np->flags |= NIU_FLAGS_10G;
8443 np->flags &= ~NIU_FLAGS_FIBER;
8444 np->mac_xcvr = MAC_XCVR_XPCS;
8445 break;
8446
8447 case ESPC_PHY_TYPE_10G_FIBER:
8448 /* 10G fiber, XPCS */
8449 np->flags |= (NIU_FLAGS_10G |
8450 NIU_FLAGS_FIBER);
8451 np->mac_xcvr = MAC_XCVR_XPCS;
8452 break;
8453
8454 default:
8455 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8456 return -EINVAL;
8457 }
8458
8459 val = nr64(ESPC_MAC_ADDR0);
8460 netif_printk(np, probe, KERN_DEBUG, np->dev,
8461 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8462 dev->dev_addr[0] = (val >> 0) & 0xff;
8463 dev->dev_addr[1] = (val >> 8) & 0xff;
8464 dev->dev_addr[2] = (val >> 16) & 0xff;
8465 dev->dev_addr[3] = (val >> 24) & 0xff;
8466
8467 val = nr64(ESPC_MAC_ADDR1);
8468 netif_printk(np, probe, KERN_DEBUG, np->dev,
8469 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8470 dev->dev_addr[4] = (val >> 0) & 0xff;
8471 dev->dev_addr[5] = (val >> 8) & 0xff;
8472
8473 if (!is_valid_ether_addr(&dev->dev_addr[0])) {
8474 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8475 dev->dev_addr);
8476 return -EINVAL;
8477 }
8478
8479 val8 = dev->dev_addr[5];
8480 dev->dev_addr[5] += np->port;
8481 if (dev->dev_addr[5] < val8)
8482 dev->dev_addr[4]++;
8483
8484 val = nr64(ESPC_MOD_STR_LEN);
8485 netif_printk(np, probe, KERN_DEBUG, np->dev,
8486 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8487 if (val >= 8 * 4)
8488 return -EINVAL;
8489
8490 for (i = 0; i < val; i += 4) {
8491 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8492
8493 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8494 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8495 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8496 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8497 }
8498 np->vpd.model[val] = '\0';
8499
8500 val = nr64(ESPC_BD_MOD_STR_LEN);
8501 netif_printk(np, probe, KERN_DEBUG, np->dev,
8502 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8503 if (val >= 4 * 4)
8504 return -EINVAL;
8505
8506 for (i = 0; i < val; i += 4) {
8507 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8508
8509 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8510 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8511 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8512 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8513 }
8514 np->vpd.board_model[val] = '\0';
8515
8516 np->vpd.mac_num =
8517 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8518 netif_printk(np, probe, KERN_DEBUG, np->dev,
8519 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8520
8521 return 0;
8522 }
8523
8524 static int niu_get_and_validate_port(struct niu *np)
8525 {
8526 struct niu_parent *parent = np->parent;
8527
8528 if (np->port <= 1)
8529 np->flags |= NIU_FLAGS_XMAC;
8530
8531 if (!parent->num_ports) {
8532 if (parent->plat_type == PLAT_TYPE_NIU) {
8533 parent->num_ports = 2;
8534 } else {
8535 parent->num_ports = niu_pci_vpd_get_nports(np);
8536 if (!parent->num_ports) {
8537 /* Fall back to SPROM as last resort.
8538 * This will fail on most cards.
8539 */
8540 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8541 ESPC_NUM_PORTS_MACS_VAL;
8542
8543 /* All of the current probing methods fail on
8544 * Maramba on-board parts.
8545 */
8546 if (!parent->num_ports)
8547 parent->num_ports = 4;
8548 }
8549 }
8550 }
8551
8552 if (np->port >= parent->num_ports)
8553 return -ENODEV;
8554
8555 return 0;
8556 }
8557
8558 static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
8559 int dev_id_1, int dev_id_2, u8 phy_port, int type)
8560 {
8561 u32 id = (dev_id_1 << 16) | dev_id_2;
8562 u8 idx;
8563
8564 if (dev_id_1 < 0 || dev_id_2 < 0)
8565 return 0;
8566 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8567 /* Because of the NIU_PHY_ID_MASK being applied, the 8704
8568 * test covers the 8706 as well.
8569 */
8570 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8571 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8572 return 0;
8573 } else {
8574 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8575 return 0;
8576 }
8577
8578 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8579 parent->index, id,
8580 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8581 type == PHY_TYPE_PCS ? "PCS" : "MII",
8582 phy_port);
8583
8584 if (p->cur[type] >= NIU_MAX_PORTS) {
8585 pr_err("Too many PHY ports\n");
8586 return -EINVAL;
8587 }
8588 idx = p->cur[type];
8589 p->phy_id[type][idx] = id;
8590 p->phy_port[type][idx] = phy_port;
8591 p->cur[type] = idx + 1;
8592 return 0;
8593 }
8594
8595 static int port_has_10g(struct phy_probe_info *p, int port)
8596 {
8597 int i;
8598
8599 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8600 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8601 return 1;
8602 }
8603 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8604 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8605 return 1;
8606 }
8607
8608 return 0;
8609 }
8610
8611 static int count_10g_ports(struct phy_probe_info *p, int *lowest)
8612 {
8613 int port, cnt;
8614
8615 cnt = 0;
8616 *lowest = 32;
8617 for (port = 8; port < 32; port++) {
8618 if (port_has_10g(p, port)) {
8619 if (!cnt)
8620 *lowest = port;
8621 cnt++;
8622 }
8623 }
8624
8625 return cnt;
8626 }
8627
8628 static int count_1g_ports(struct phy_probe_info *p, int *lowest)
8629 {
8630 *lowest = 32;
8631 if (p->cur[PHY_TYPE_MII])
8632 *lowest = p->phy_port[PHY_TYPE_MII][0];
8633
8634 return p->cur[PHY_TYPE_MII];
8635 }
8636
8637 static void niu_n2_divide_channels(struct niu_parent *parent)
8638 {
8639 int num_ports = parent->num_ports;
8640 int i;
8641
8642 for (i = 0; i < num_ports; i++) {
8643 parent->rxchan_per_port[i] = (16 / num_ports);
8644 parent->txchan_per_port[i] = (16 / num_ports);
8645
8646 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8647 parent->index, i,
8648 parent->rxchan_per_port[i],
8649 parent->txchan_per_port[i]);
8650 }
8651 }
8652
8653 static void niu_divide_channels(struct niu_parent *parent,
8654 int num_10g, int num_1g)
8655 {
8656 int num_ports = parent->num_ports;
8657 int rx_chans_per_10g, rx_chans_per_1g;
8658 int tx_chans_per_10g, tx_chans_per_1g;
8659 int i, tot_rx, tot_tx;
8660
8661 if (!num_10g || !num_1g) {
8662 rx_chans_per_10g = rx_chans_per_1g =
8663 (NIU_NUM_RXCHAN / num_ports);
8664 tx_chans_per_10g = tx_chans_per_1g =
8665 (NIU_NUM_TXCHAN / num_ports);
8666 } else {
8667 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8668 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8669 (rx_chans_per_1g * num_1g)) /
8670 num_10g;
8671
8672 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8673 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8674 (tx_chans_per_1g * num_1g)) /
8675 num_10g;
8676 }
8677
8678 tot_rx = tot_tx = 0;
8679 for (i = 0; i < num_ports; i++) {
8680 int type = phy_decode(parent->port_phy, i);
8681
8682 if (type == PORT_TYPE_10G) {
8683 parent->rxchan_per_port[i] = rx_chans_per_10g;
8684 parent->txchan_per_port[i] = tx_chans_per_10g;
8685 } else {
8686 parent->rxchan_per_port[i] = rx_chans_per_1g;
8687 parent->txchan_per_port[i] = tx_chans_per_1g;
8688 }
8689 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8690 parent->index, i,
8691 parent->rxchan_per_port[i],
8692 parent->txchan_per_port[i]);
8693 tot_rx += parent->rxchan_per_port[i];
8694 tot_tx += parent->txchan_per_port[i];
8695 }
8696
8697 if (tot_rx > NIU_NUM_RXCHAN) {
8698 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8699 parent->index, tot_rx);
8700 for (i = 0; i < num_ports; i++)
8701 parent->rxchan_per_port[i] = 1;
8702 }
8703 if (tot_tx > NIU_NUM_TXCHAN) {
8704 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8705 parent->index, tot_tx);
8706 for (i = 0; i < num_ports; i++)
8707 parent->txchan_per_port[i] = 1;
8708 }
8709 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8710 pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8711 parent->index, tot_rx, tot_tx);
8712 }
8713 }
8714
8715 static void niu_divide_rdc_groups(struct niu_parent *parent,
8716 int num_10g, int num_1g)
8717 {
8718 int i, num_ports = parent->num_ports;
8719 int rdc_group, rdc_groups_per_port;
8720 int rdc_channel_base;
8721
8722 rdc_group = 0;
8723 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8724
8725 rdc_channel_base = 0;
8726
8727 for (i = 0; i < num_ports; i++) {
8728 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8729 int grp, num_channels = parent->rxchan_per_port[i];
8730 int this_channel_offset;
8731
8732 tp->first_table_num = rdc_group;
8733 tp->num_tables = rdc_groups_per_port;
8734 this_channel_offset = 0;
8735 for (grp = 0; grp < tp->num_tables; grp++) {
8736 struct rdc_table *rt = &tp->tables[grp];
8737 int slot;
8738
8739 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8740 parent->index, i, tp->first_table_num + grp);
8741 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8742 rt->rxdma_channel[slot] =
8743 rdc_channel_base + this_channel_offset;
8744
8745 pr_cont("%d ", rt->rxdma_channel[slot]);
8746
8747 if (++this_channel_offset == num_channels)
8748 this_channel_offset = 0;
8749 }
8750 pr_cont("]\n");
8751 }
8752
8753 parent->rdc_default[i] = rdc_channel_base;
8754
8755 rdc_channel_base += num_channels;
8756 rdc_group += rdc_groups_per_port;
8757 }
8758 }
8759
8760 static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
8761 struct phy_probe_info *info)
8762 {
8763 unsigned long flags;
8764 int port, err;
8765
8766 memset(info, 0, sizeof(*info));
8767
8768 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8769 niu_lock_parent(np, flags);
8770 err = 0;
8771 for (port = 8; port < 32; port++) {
8772 int dev_id_1, dev_id_2;
8773
8774 dev_id_1 = mdio_read(np, port,
8775 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8776 dev_id_2 = mdio_read(np, port,
8777 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8778 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8779 PHY_TYPE_PMA_PMD);
8780 if (err)
8781 break;
8782 dev_id_1 = mdio_read(np, port,
8783 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8784 dev_id_2 = mdio_read(np, port,
8785 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8786 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8787 PHY_TYPE_PCS);
8788 if (err)
8789 break;
8790 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8791 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8792 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8793 PHY_TYPE_MII);
8794 if (err)
8795 break;
8796 }
8797 niu_unlock_parent(np, flags);
8798
8799 return err;
8800 }
8801
8802 static int walk_phys(struct niu *np, struct niu_parent *parent)
8803 {
8804 struct phy_probe_info *info = &parent->phy_probe_info;
8805 int lowest_10g, lowest_1g;
8806 int num_10g, num_1g;
8807 u32 val;
8808 int err;
8809
8810 num_10g = num_1g = 0;
8811
8812 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8813 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8814 num_10g = 0;
8815 num_1g = 2;
8816 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8817 parent->num_ports = 4;
8818 val = (phy_encode(PORT_TYPE_1G, 0) |
8819 phy_encode(PORT_TYPE_1G, 1) |
8820 phy_encode(PORT_TYPE_1G, 2) |
8821 phy_encode(PORT_TYPE_1G, 3));
8822 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8823 num_10g = 2;
8824 num_1g = 0;
8825 parent->num_ports = 2;
8826 val = (phy_encode(PORT_TYPE_10G, 0) |
8827 phy_encode(PORT_TYPE_10G, 1));
8828 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8829 (parent->plat_type == PLAT_TYPE_NIU)) {
8830 /* this is the Monza case */
8831 if (np->flags & NIU_FLAGS_10G) {
8832 val = (phy_encode(PORT_TYPE_10G, 0) |
8833 phy_encode(PORT_TYPE_10G, 1));
8834 } else {
8835 val = (phy_encode(PORT_TYPE_1G, 0) |
8836 phy_encode(PORT_TYPE_1G, 1));
8837 }
8838 } else {
8839 err = fill_phy_probe_info(np, parent, info);
8840 if (err)
8841 return err;
8842
8843 num_10g = count_10g_ports(info, &lowest_10g);
8844 num_1g = count_1g_ports(info, &lowest_1g);
8845
8846 switch ((num_10g << 4) | num_1g) {
8847 case 0x24:
8848 if (lowest_1g == 10)
8849 parent->plat_type = PLAT_TYPE_VF_P0;
8850 else if (lowest_1g == 26)
8851 parent->plat_type = PLAT_TYPE_VF_P1;
8852 else
8853 goto unknown_vg_1g_port;
8854
8855 /* fallthru */
8856 case 0x22:
8857 val = (phy_encode(PORT_TYPE_10G, 0) |
8858 phy_encode(PORT_TYPE_10G, 1) |
8859 phy_encode(PORT_TYPE_1G, 2) |
8860 phy_encode(PORT_TYPE_1G, 3));
8861 break;
8862
8863 case 0x20:
8864 val = (phy_encode(PORT_TYPE_10G, 0) |
8865 phy_encode(PORT_TYPE_10G, 1));
8866 break;
8867
8868 case 0x10:
8869 val = phy_encode(PORT_TYPE_10G, np->port);
8870 break;
8871
8872 case 0x14:
8873 if (lowest_1g == 10)
8874 parent->plat_type = PLAT_TYPE_VF_P0;
8875 else if (lowest_1g == 26)
8876 parent->plat_type = PLAT_TYPE_VF_P1;
8877 else
8878 goto unknown_vg_1g_port;
8879
8880 /* fallthru */
8881 case 0x13:
8882 if ((lowest_10g & 0x7) == 0)
8883 val = (phy_encode(PORT_TYPE_10G, 0) |
8884 phy_encode(PORT_TYPE_1G, 1) |
8885 phy_encode(PORT_TYPE_1G, 2) |
8886 phy_encode(PORT_TYPE_1G, 3));
8887 else
8888 val = (phy_encode(PORT_TYPE_1G, 0) |
8889 phy_encode(PORT_TYPE_10G, 1) |
8890 phy_encode(PORT_TYPE_1G, 2) |
8891 phy_encode(PORT_TYPE_1G, 3));
8892 break;
8893
8894 case 0x04:
8895 if (lowest_1g == 10)
8896 parent->plat_type = PLAT_TYPE_VF_P0;
8897 else if (lowest_1g == 26)
8898 parent->plat_type = PLAT_TYPE_VF_P1;
8899 else
8900 goto unknown_vg_1g_port;
8901
8902 val = (phy_encode(PORT_TYPE_1G, 0) |
8903 phy_encode(PORT_TYPE_1G, 1) |
8904 phy_encode(PORT_TYPE_1G, 2) |
8905 phy_encode(PORT_TYPE_1G, 3));
8906 break;
8907
8908 default:
8909 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8910 num_10g, num_1g);
8911 return -EINVAL;
8912 }
8913 }
8914
8915 parent->port_phy = val;
8916
8917 if (parent->plat_type == PLAT_TYPE_NIU)
8918 niu_n2_divide_channels(parent);
8919 else
8920 niu_divide_channels(parent, num_10g, num_1g);
8921
8922 niu_divide_rdc_groups(parent, num_10g, num_1g);
8923
8924 return 0;
8925
8926 unknown_vg_1g_port:
8927 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8928 return -EINVAL;
8929 }
8930
8931 static int niu_probe_ports(struct niu *np)
8932 {
8933 struct niu_parent *parent = np->parent;
8934 int err, i;
8935
8936 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8937 err = walk_phys(np, parent);
8938 if (err)
8939 return err;
8940
8941 niu_set_ldg_timer_res(np, 2);
8942 for (i = 0; i <= LDN_MAX; i++)
8943 niu_ldn_irq_enable(np, i, 0);
8944 }
8945
8946 if (parent->port_phy == PORT_PHY_INVALID)
8947 return -EINVAL;
8948
8949 return 0;
8950 }
8951
8952 static int niu_classifier_swstate_init(struct niu *np)
8953 {
8954 struct niu_classifier *cp = &np->clas;
8955
8956 cp->tcam_top = (u16) np->port;
8957 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8958 cp->h1_init = 0xffffffff;
8959 cp->h2_init = 0xffff;
8960
8961 return fflp_early_init(np);
8962 }
8963
8964 static void niu_link_config_init(struct niu *np)
8965 {
8966 struct niu_link_config *lp = &np->link_config;
8967
8968 lp->advertising = (ADVERTISED_10baseT_Half |
8969 ADVERTISED_10baseT_Full |
8970 ADVERTISED_100baseT_Half |
8971 ADVERTISED_100baseT_Full |
8972 ADVERTISED_1000baseT_Half |
8973 ADVERTISED_1000baseT_Full |
8974 ADVERTISED_10000baseT_Full |
8975 ADVERTISED_Autoneg);
8976 lp->speed = lp->active_speed = SPEED_INVALID;
8977 lp->duplex = DUPLEX_FULL;
8978 lp->active_duplex = DUPLEX_INVALID;
8979 lp->autoneg = 1;
8980 #if 0
8981 lp->loopback_mode = LOOPBACK_MAC;
8982 lp->active_speed = SPEED_10000;
8983 lp->active_duplex = DUPLEX_FULL;
8984 #else
8985 lp->loopback_mode = LOOPBACK_DISABLED;
8986 #endif
8987 }
8988
8989 static int niu_init_mac_ipp_pcs_base(struct niu *np)
8990 {
8991 switch (np->port) {
8992 case 0:
8993 np->mac_regs = np->regs + XMAC_PORT0_OFF;
8994 np->ipp_off = 0x00000;
8995 np->pcs_off = 0x04000;
8996 np->xpcs_off = 0x02000;
8997 break;
8998
8999 case 1:
9000 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9001 np->ipp_off = 0x08000;
9002 np->pcs_off = 0x0a000;
9003 np->xpcs_off = 0x08000;
9004 break;
9005
9006 case 2:
9007 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9008 np->ipp_off = 0x04000;
9009 np->pcs_off = 0x0e000;
9010 np->xpcs_off = ~0UL;
9011 break;
9012
9013 case 3:
9014 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9015 np->ipp_off = 0x0c000;
9016 np->pcs_off = 0x12000;
9017 np->xpcs_off = ~0UL;
9018 break;
9019
9020 default:
9021 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9022 return -EINVAL;
9023 }
9024
9025 return 0;
9026 }
9027
9028 static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
9029 {
9030 struct msix_entry msi_vec[NIU_NUM_LDG];
9031 struct niu_parent *parent = np->parent;
9032 struct pci_dev *pdev = np->pdev;
9033 int i, num_irqs;
9034 u8 first_ldg;
9035
9036 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9037 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9038 ldg_num_map[i] = first_ldg + i;
9039
9040 num_irqs = (parent->rxchan_per_port[np->port] +
9041 parent->txchan_per_port[np->port] +
9042 (np->port == 0 ? 3 : 1));
9043 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9044
9045 for (i = 0; i < num_irqs; i++) {
9046 msi_vec[i].vector = 0;
9047 msi_vec[i].entry = i;
9048 }
9049
9050 num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
9051 if (num_irqs < 0) {
9052 np->flags &= ~NIU_FLAGS_MSIX;
9053 return;
9054 }
9055
9056 np->flags |= NIU_FLAGS_MSIX;
9057 for (i = 0; i < num_irqs; i++)
9058 np->ldg[i].irq = msi_vec[i].vector;
9059 np->num_ldg = num_irqs;
9060 }
9061
9062 static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9063 {
9064 #ifdef CONFIG_SPARC64
9065 struct platform_device *op = np->op;
9066 const u32 *int_prop;
9067 int i;
9068
9069 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9070 if (!int_prop)
9071 return -ENODEV;
9072
9073 for (i = 0; i < op->archdata.num_irqs; i++) {
9074 ldg_num_map[i] = int_prop[i];
9075 np->ldg[i].irq = op->archdata.irqs[i];
9076 }
9077
9078 np->num_ldg = op->archdata.num_irqs;
9079
9080 return 0;
9081 #else
9082 return -EINVAL;
9083 #endif
9084 }
9085
9086 static int niu_ldg_init(struct niu *np)
9087 {
9088 struct niu_parent *parent = np->parent;
9089 u8 ldg_num_map[NIU_NUM_LDG];
9090 int first_chan, num_chan;
9091 int i, err, ldg_rotor;
9092 u8 port;
9093
9094 np->num_ldg = 1;
9095 np->ldg[0].irq = np->dev->irq;
9096 if (parent->plat_type == PLAT_TYPE_NIU) {
9097 err = niu_n2_irq_init(np, ldg_num_map);
9098 if (err)
9099 return err;
9100 } else
9101 niu_try_msix(np, ldg_num_map);
9102
9103 port = np->port;
9104 for (i = 0; i < np->num_ldg; i++) {
9105 struct niu_ldg *lp = &np->ldg[i];
9106
9107 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9108
9109 lp->np = np;
9110 lp->ldg_num = ldg_num_map[i];
9111 lp->timer = 2; /* XXX */
9112
9113 /* On N2 NIU the firmware has setup the SID mappings so they go
9114 * to the correct values that will route the LDG to the proper
9115 * interrupt in the NCU interrupt table.
9116 */
9117 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9118 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9119 if (err)
9120 return err;
9121 }
9122 }
9123
9124 /* We adopt the LDG assignment ordering used by the N2 NIU
9125 * 'interrupt' properties because that simplifies a lot of
9126 * things. This ordering is:
9127 *
9128 * MAC
9129 * MIF (if port zero)
9130 * SYSERR (if port zero)
9131 * RX channels
9132 * TX channels
9133 */
9134
9135 ldg_rotor = 0;
9136
9137 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9138 LDN_MAC(port));
9139 if (err)
9140 return err;
9141
9142 ldg_rotor++;
9143 if (ldg_rotor == np->num_ldg)
9144 ldg_rotor = 0;
9145
9146 if (port == 0) {
9147 err = niu_ldg_assign_ldn(np, parent,
9148 ldg_num_map[ldg_rotor],
9149 LDN_MIF);
9150 if (err)
9151 return err;
9152
9153 ldg_rotor++;
9154 if (ldg_rotor == np->num_ldg)
9155 ldg_rotor = 0;
9156
9157 err = niu_ldg_assign_ldn(np, parent,
9158 ldg_num_map[ldg_rotor],
9159 LDN_DEVICE_ERROR);
9160 if (err)
9161 return err;
9162
9163 ldg_rotor++;
9164 if (ldg_rotor == np->num_ldg)
9165 ldg_rotor = 0;
9166
9167 }
9168
9169 first_chan = 0;
9170 for (i = 0; i < port; i++)
9171 first_chan += parent->rxchan_per_port[i];
9172 num_chan = parent->rxchan_per_port[port];
9173
9174 for (i = first_chan; i < (first_chan + num_chan); i++) {
9175 err = niu_ldg_assign_ldn(np, parent,
9176 ldg_num_map[ldg_rotor],
9177 LDN_RXDMA(i));
9178 if (err)
9179 return err;
9180 ldg_rotor++;
9181 if (ldg_rotor == np->num_ldg)
9182 ldg_rotor = 0;
9183 }
9184
9185 first_chan = 0;
9186 for (i = 0; i < port; i++)
9187 first_chan += parent->txchan_per_port[i];
9188 num_chan = parent->txchan_per_port[port];
9189 for (i = first_chan; i < (first_chan + num_chan); i++) {
9190 err = niu_ldg_assign_ldn(np, parent,
9191 ldg_num_map[ldg_rotor],
9192 LDN_TXDMA(i));
9193 if (err)
9194 return err;
9195 ldg_rotor++;
9196 if (ldg_rotor == np->num_ldg)
9197 ldg_rotor = 0;
9198 }
9199
9200 return 0;
9201 }
9202
9203 static void niu_ldg_free(struct niu *np)
9204 {
9205 if (np->flags & NIU_FLAGS_MSIX)
9206 pci_disable_msix(np->pdev);
9207 }
9208
9209 static int niu_get_of_props(struct niu *np)
9210 {
9211 #ifdef CONFIG_SPARC64
9212 struct net_device *dev = np->dev;
9213 struct device_node *dp;
9214 const char *phy_type;
9215 const u8 *mac_addr;
9216 const char *model;
9217 int prop_len;
9218
9219 if (np->parent->plat_type == PLAT_TYPE_NIU)
9220 dp = np->op->dev.of_node;
9221 else
9222 dp = pci_device_to_OF_node(np->pdev);
9223
9224 phy_type = of_get_property(dp, "phy-type", &prop_len);
9225 if (!phy_type) {
9226 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9227 dp->full_name);
9228 return -EINVAL;
9229 }
9230
9231 if (!strcmp(phy_type, "none"))
9232 return -ENODEV;
9233
9234 strcpy(np->vpd.phy_type, phy_type);
9235
9236 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9237 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9238 dp->full_name, np->vpd.phy_type);
9239 return -EINVAL;
9240 }
9241
9242 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9243 if (!mac_addr) {
9244 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9245 dp->full_name);
9246 return -EINVAL;
9247 }
9248 if (prop_len != dev->addr_len) {
9249 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9250 dp->full_name, prop_len);
9251 }
9252 memcpy(dev->dev_addr, mac_addr, dev->addr_len);
9253 if (!is_valid_ether_addr(&dev->dev_addr[0])) {
9254 netdev_err(dev, "%s: OF MAC address is invalid\n",
9255 dp->full_name);
9256 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->dev_addr);
9257 return -EINVAL;
9258 }
9259
9260 model = of_get_property(dp, "model", &prop_len);
9261
9262 if (model)
9263 strcpy(np->vpd.model, model);
9264
9265 if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9266 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9267 NIU_FLAGS_HOTPLUG_PHY);
9268 }
9269
9270 return 0;
9271 #else
9272 return -EINVAL;
9273 #endif
9274 }
9275
9276 static int niu_get_invariants(struct niu *np)
9277 {
9278 int err, have_props;
9279 u32 offset;
9280
9281 err = niu_get_of_props(np);
9282 if (err == -ENODEV)
9283 return err;
9284
9285 have_props = !err;
9286
9287 err = niu_init_mac_ipp_pcs_base(np);
9288 if (err)
9289 return err;
9290
9291 if (have_props) {
9292 err = niu_get_and_validate_port(np);
9293 if (err)
9294 return err;
9295
9296 } else {
9297 if (np->parent->plat_type == PLAT_TYPE_NIU)
9298 return -EINVAL;
9299
9300 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9301 offset = niu_pci_vpd_offset(np);
9302 netif_printk(np, probe, KERN_DEBUG, np->dev,
9303 "%s() VPD offset [%08x]\n", __func__, offset);
9304 if (offset)
9305 niu_pci_vpd_fetch(np, offset);
9306 nw64(ESPC_PIO_EN, 0);
9307
9308 if (np->flags & NIU_FLAGS_VPD_VALID) {
9309 niu_pci_vpd_validate(np);
9310 err = niu_get_and_validate_port(np);
9311 if (err)
9312 return err;
9313 }
9314
9315 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9316 err = niu_get_and_validate_port(np);
9317 if (err)
9318 return err;
9319 err = niu_pci_probe_sprom(np);
9320 if (err)
9321 return err;
9322 }
9323 }
9324
9325 err = niu_probe_ports(np);
9326 if (err)
9327 return err;
9328
9329 niu_ldg_init(np);
9330
9331 niu_classifier_swstate_init(np);
9332 niu_link_config_init(np);
9333
9334 err = niu_determine_phy_disposition(np);
9335 if (!err)
9336 err = niu_init_link(np);
9337
9338 return err;
9339 }
9340
9341 static LIST_HEAD(niu_parent_list);
9342 static DEFINE_MUTEX(niu_parent_lock);
9343 static int niu_parent_index;
9344
9345 static ssize_t show_port_phy(struct device *dev,
9346 struct device_attribute *attr, char *buf)
9347 {
9348 struct platform_device *plat_dev = to_platform_device(dev);
9349 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9350 u32 port_phy = p->port_phy;
9351 char *orig_buf = buf;
9352 int i;
9353
9354 if (port_phy == PORT_PHY_UNKNOWN ||
9355 port_phy == PORT_PHY_INVALID)
9356 return 0;
9357
9358 for (i = 0; i < p->num_ports; i++) {
9359 const char *type_str;
9360 int type;
9361
9362 type = phy_decode(port_phy, i);
9363 if (type == PORT_TYPE_10G)
9364 type_str = "10G";
9365 else
9366 type_str = "1G";
9367 buf += sprintf(buf,
9368 (i == 0) ? "%s" : " %s",
9369 type_str);
9370 }
9371 buf += sprintf(buf, "\n");
9372 return buf - orig_buf;
9373 }
9374
9375 static ssize_t show_plat_type(struct device *dev,
9376 struct device_attribute *attr, char *buf)
9377 {
9378 struct platform_device *plat_dev = to_platform_device(dev);
9379 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9380 const char *type_str;
9381
9382 switch (p->plat_type) {
9383 case PLAT_TYPE_ATLAS:
9384 type_str = "atlas";
9385 break;
9386 case PLAT_TYPE_NIU:
9387 type_str = "niu";
9388 break;
9389 case PLAT_TYPE_VF_P0:
9390 type_str = "vf_p0";
9391 break;
9392 case PLAT_TYPE_VF_P1:
9393 type_str = "vf_p1";
9394 break;
9395 default:
9396 type_str = "unknown";
9397 break;
9398 }
9399
9400 return sprintf(buf, "%s\n", type_str);
9401 }
9402
9403 static ssize_t __show_chan_per_port(struct device *dev,
9404 struct device_attribute *attr, char *buf,
9405 int rx)
9406 {
9407 struct platform_device *plat_dev = to_platform_device(dev);
9408 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9409 char *orig_buf = buf;
9410 u8 *arr;
9411 int i;
9412
9413 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9414
9415 for (i = 0; i < p->num_ports; i++) {
9416 buf += sprintf(buf,
9417 (i == 0) ? "%d" : " %d",
9418 arr[i]);
9419 }
9420 buf += sprintf(buf, "\n");
9421
9422 return buf - orig_buf;
9423 }
9424
9425 static ssize_t show_rxchan_per_port(struct device *dev,
9426 struct device_attribute *attr, char *buf)
9427 {
9428 return __show_chan_per_port(dev, attr, buf, 1);
9429 }
9430
9431 static ssize_t show_txchan_per_port(struct device *dev,
9432 struct device_attribute *attr, char *buf)
9433 {
9434 return __show_chan_per_port(dev, attr, buf, 1);
9435 }
9436
9437 static ssize_t show_num_ports(struct device *dev,
9438 struct device_attribute *attr, char *buf)
9439 {
9440 struct platform_device *plat_dev = to_platform_device(dev);
9441 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9442
9443 return sprintf(buf, "%d\n", p->num_ports);
9444 }
9445
9446 static struct device_attribute niu_parent_attributes[] = {
9447 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9448 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9449 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9450 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9451 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9452 {}
9453 };
9454
9455 static struct niu_parent *niu_new_parent(struct niu *np,
9456 union niu_parent_id *id, u8 ptype)
9457 {
9458 struct platform_device *plat_dev;
9459 struct niu_parent *p;
9460 int i;
9461
9462 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9463 NULL, 0);
9464 if (IS_ERR(plat_dev))
9465 return NULL;
9466
9467 for (i = 0; niu_parent_attributes[i].attr.name; i++) {
9468 int err = device_create_file(&plat_dev->dev,
9469 &niu_parent_attributes[i]);
9470 if (err)
9471 goto fail_unregister;
9472 }
9473
9474 p = kzalloc(sizeof(*p), GFP_KERNEL);
9475 if (!p)
9476 goto fail_unregister;
9477
9478 p->index = niu_parent_index++;
9479
9480 plat_dev->dev.platform_data = p;
9481 p->plat_dev = plat_dev;
9482
9483 memcpy(&p->id, id, sizeof(*id));
9484 p->plat_type = ptype;
9485 INIT_LIST_HEAD(&p->list);
9486 atomic_set(&p->refcnt, 0);
9487 list_add(&p->list, &niu_parent_list);
9488 spin_lock_init(&p->lock);
9489
9490 p->rxdma_clock_divider = 7500;
9491
9492 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9493 if (p->plat_type == PLAT_TYPE_NIU)
9494 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9495
9496 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9497 int index = i - CLASS_CODE_USER_PROG1;
9498
9499 p->tcam_key[index] = TCAM_KEY_TSEL;
9500 p->flow_key[index] = (FLOW_KEY_IPSA |
9501 FLOW_KEY_IPDA |
9502 FLOW_KEY_PROTO |
9503 (FLOW_KEY_L4_BYTE12 <<
9504 FLOW_KEY_L4_0_SHIFT) |
9505 (FLOW_KEY_L4_BYTE12 <<
9506 FLOW_KEY_L4_1_SHIFT));
9507 }
9508
9509 for (i = 0; i < LDN_MAX + 1; i++)
9510 p->ldg_map[i] = LDG_INVALID;
9511
9512 return p;
9513
9514 fail_unregister:
9515 platform_device_unregister(plat_dev);
9516 return NULL;
9517 }
9518
9519 static struct niu_parent *niu_get_parent(struct niu *np,
9520 union niu_parent_id *id, u8 ptype)
9521 {
9522 struct niu_parent *p, *tmp;
9523 int port = np->port;
9524
9525 mutex_lock(&niu_parent_lock);
9526 p = NULL;
9527 list_for_each_entry(tmp, &niu_parent_list, list) {
9528 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9529 p = tmp;
9530 break;
9531 }
9532 }
9533 if (!p)
9534 p = niu_new_parent(np, id, ptype);
9535
9536 if (p) {
9537 char port_name[6];
9538 int err;
9539
9540 sprintf(port_name, "port%d", port);
9541 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9542 &np->device->kobj,
9543 port_name);
9544 if (!err) {
9545 p->ports[port] = np;
9546 atomic_inc(&p->refcnt);
9547 }
9548 }
9549 mutex_unlock(&niu_parent_lock);
9550
9551 return p;
9552 }
9553
9554 static void niu_put_parent(struct niu *np)
9555 {
9556 struct niu_parent *p = np->parent;
9557 u8 port = np->port;
9558 char port_name[6];
9559
9560 BUG_ON(!p || p->ports[port] != np);
9561
9562 netif_printk(np, probe, KERN_DEBUG, np->dev,
9563 "%s() port[%u]\n", __func__, port);
9564
9565 sprintf(port_name, "port%d", port);
9566
9567 mutex_lock(&niu_parent_lock);
9568
9569 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9570
9571 p->ports[port] = NULL;
9572 np->parent = NULL;
9573
9574 if (atomic_dec_and_test(&p->refcnt)) {
9575 list_del(&p->list);
9576 platform_device_unregister(p->plat_dev);
9577 }
9578
9579 mutex_unlock(&niu_parent_lock);
9580 }
9581
9582 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9583 u64 *handle, gfp_t flag)
9584 {
9585 dma_addr_t dh;
9586 void *ret;
9587
9588 ret = dma_alloc_coherent(dev, size, &dh, flag);
9589 if (ret)
9590 *handle = dh;
9591 return ret;
9592 }
9593
9594 static void niu_pci_free_coherent(struct device *dev, size_t size,
9595 void *cpu_addr, u64 handle)
9596 {
9597 dma_free_coherent(dev, size, cpu_addr, handle);
9598 }
9599
9600 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9601 unsigned long offset, size_t size,
9602 enum dma_data_direction direction)
9603 {
9604 return dma_map_page(dev, page, offset, size, direction);
9605 }
9606
9607 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9608 size_t size, enum dma_data_direction direction)
9609 {
9610 dma_unmap_page(dev, dma_address, size, direction);
9611 }
9612
9613 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9614 size_t size,
9615 enum dma_data_direction direction)
9616 {
9617 return dma_map_single(dev, cpu_addr, size, direction);
9618 }
9619
9620 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9621 size_t size,
9622 enum dma_data_direction direction)
9623 {
9624 dma_unmap_single(dev, dma_address, size, direction);
9625 }
9626
9627 static const struct niu_ops niu_pci_ops = {
9628 .alloc_coherent = niu_pci_alloc_coherent,
9629 .free_coherent = niu_pci_free_coherent,
9630 .map_page = niu_pci_map_page,
9631 .unmap_page = niu_pci_unmap_page,
9632 .map_single = niu_pci_map_single,
9633 .unmap_single = niu_pci_unmap_single,
9634 };
9635
9636 static void niu_driver_version(void)
9637 {
9638 static int niu_version_printed;
9639
9640 if (niu_version_printed++ == 0)
9641 pr_info("%s", version);
9642 }
9643
9644 static struct net_device *niu_alloc_and_init(struct device *gen_dev,
9645 struct pci_dev *pdev,
9646 struct platform_device *op,
9647 const struct niu_ops *ops, u8 port)
9648 {
9649 struct net_device *dev;
9650 struct niu *np;
9651
9652 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9653 if (!dev)
9654 return NULL;
9655
9656 SET_NETDEV_DEV(dev, gen_dev);
9657
9658 np = netdev_priv(dev);
9659 np->dev = dev;
9660 np->pdev = pdev;
9661 np->op = op;
9662 np->device = gen_dev;
9663 np->ops = ops;
9664
9665 np->msg_enable = niu_debug;
9666
9667 spin_lock_init(&np->lock);
9668 INIT_WORK(&np->reset_task, niu_reset_task);
9669
9670 np->port = port;
9671
9672 return dev;
9673 }
9674
9675 static const struct net_device_ops niu_netdev_ops = {
9676 .ndo_open = niu_open,
9677 .ndo_stop = niu_close,
9678 .ndo_start_xmit = niu_start_xmit,
9679 .ndo_get_stats64 = niu_get_stats,
9680 .ndo_set_rx_mode = niu_set_rx_mode,
9681 .ndo_validate_addr = eth_validate_addr,
9682 .ndo_set_mac_address = niu_set_mac_addr,
9683 .ndo_do_ioctl = niu_ioctl,
9684 .ndo_tx_timeout = niu_tx_timeout,
9685 .ndo_change_mtu = niu_change_mtu,
9686 };
9687
9688 static void niu_assign_netdev_ops(struct net_device *dev)
9689 {
9690 dev->netdev_ops = &niu_netdev_ops;
9691 dev->ethtool_ops = &niu_ethtool_ops;
9692 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9693 }
9694
9695 static void niu_device_announce(struct niu *np)
9696 {
9697 struct net_device *dev = np->dev;
9698
9699 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9700
9701 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9702 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9703 dev->name,
9704 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9705 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9706 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9707 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9708 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9709 np->vpd.phy_type);
9710 } else {
9711 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9712 dev->name,
9713 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9714 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9715 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9716 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9717 "COPPER")),
9718 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9719 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9720 np->vpd.phy_type);
9721 }
9722 }
9723
9724 static void niu_set_basic_features(struct net_device *dev)
9725 {
9726 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9727 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9728 }
9729
9730 static int niu_pci_init_one(struct pci_dev *pdev,
9731 const struct pci_device_id *ent)
9732 {
9733 union niu_parent_id parent_id;
9734 struct net_device *dev;
9735 struct niu *np;
9736 int err;
9737 u64 dma_mask;
9738
9739 niu_driver_version();
9740
9741 err = pci_enable_device(pdev);
9742 if (err) {
9743 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9744 return err;
9745 }
9746
9747 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9748 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9749 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9750 err = -ENODEV;
9751 goto err_out_disable_pdev;
9752 }
9753
9754 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9755 if (err) {
9756 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9757 goto err_out_disable_pdev;
9758 }
9759
9760 if (!pci_is_pcie(pdev)) {
9761 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9762 err = -ENODEV;
9763 goto err_out_free_res;
9764 }
9765
9766 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9767 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9768 if (!dev) {
9769 err = -ENOMEM;
9770 goto err_out_free_res;
9771 }
9772 np = netdev_priv(dev);
9773
9774 memset(&parent_id, 0, sizeof(parent_id));
9775 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9776 parent_id.pci.bus = pdev->bus->number;
9777 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9778
9779 np->parent = niu_get_parent(np, &parent_id,
9780 PLAT_TYPE_ATLAS);
9781 if (!np->parent) {
9782 err = -ENOMEM;
9783 goto err_out_free_dev;
9784 }
9785
9786 pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
9787 PCI_EXP_DEVCTL_NOSNOOP_EN,
9788 PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
9789 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
9790 PCI_EXP_DEVCTL_RELAX_EN);
9791
9792 dma_mask = DMA_BIT_MASK(44);
9793 err = pci_set_dma_mask(pdev, dma_mask);
9794 if (!err) {
9795 dev->features |= NETIF_F_HIGHDMA;
9796 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9797 if (err) {
9798 dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9799 goto err_out_release_parent;
9800 }
9801 }
9802 if (err) {
9803 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9804 if (err) {
9805 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9806 goto err_out_release_parent;
9807 }
9808 }
9809
9810 niu_set_basic_features(dev);
9811
9812 dev->priv_flags |= IFF_UNICAST_FLT;
9813
9814 np->regs = pci_ioremap_bar(pdev, 0);
9815 if (!np->regs) {
9816 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9817 err = -ENOMEM;
9818 goto err_out_release_parent;
9819 }
9820
9821 pci_set_master(pdev);
9822 pci_save_state(pdev);
9823
9824 dev->irq = pdev->irq;
9825
9826 niu_assign_netdev_ops(dev);
9827
9828 err = niu_get_invariants(np);
9829 if (err) {
9830 if (err != -ENODEV)
9831 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9832 goto err_out_iounmap;
9833 }
9834
9835 err = register_netdev(dev);
9836 if (err) {
9837 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9838 goto err_out_iounmap;
9839 }
9840
9841 pci_set_drvdata(pdev, dev);
9842
9843 niu_device_announce(np);
9844
9845 return 0;
9846
9847 err_out_iounmap:
9848 if (np->regs) {
9849 iounmap(np->regs);
9850 np->regs = NULL;
9851 }
9852
9853 err_out_release_parent:
9854 niu_put_parent(np);
9855
9856 err_out_free_dev:
9857 free_netdev(dev);
9858
9859 err_out_free_res:
9860 pci_release_regions(pdev);
9861
9862 err_out_disable_pdev:
9863 pci_disable_device(pdev);
9864
9865 return err;
9866 }
9867
9868 static void niu_pci_remove_one(struct pci_dev *pdev)
9869 {
9870 struct net_device *dev = pci_get_drvdata(pdev);
9871
9872 if (dev) {
9873 struct niu *np = netdev_priv(dev);
9874
9875 unregister_netdev(dev);
9876 if (np->regs) {
9877 iounmap(np->regs);
9878 np->regs = NULL;
9879 }
9880
9881 niu_ldg_free(np);
9882
9883 niu_put_parent(np);
9884
9885 free_netdev(dev);
9886 pci_release_regions(pdev);
9887 pci_disable_device(pdev);
9888 }
9889 }
9890
9891 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9892 {
9893 struct net_device *dev = pci_get_drvdata(pdev);
9894 struct niu *np = netdev_priv(dev);
9895 unsigned long flags;
9896
9897 if (!netif_running(dev))
9898 return 0;
9899
9900 flush_work(&np->reset_task);
9901 niu_netif_stop(np);
9902
9903 del_timer_sync(&np->timer);
9904
9905 spin_lock_irqsave(&np->lock, flags);
9906 niu_enable_interrupts(np, 0);
9907 spin_unlock_irqrestore(&np->lock, flags);
9908
9909 netif_device_detach(dev);
9910
9911 spin_lock_irqsave(&np->lock, flags);
9912 niu_stop_hw(np);
9913 spin_unlock_irqrestore(&np->lock, flags);
9914
9915 pci_save_state(pdev);
9916
9917 return 0;
9918 }
9919
9920 static int niu_resume(struct pci_dev *pdev)
9921 {
9922 struct net_device *dev = pci_get_drvdata(pdev);
9923 struct niu *np = netdev_priv(dev);
9924 unsigned long flags;
9925 int err;
9926
9927 if (!netif_running(dev))
9928 return 0;
9929
9930 pci_restore_state(pdev);
9931
9932 netif_device_attach(dev);
9933
9934 spin_lock_irqsave(&np->lock, flags);
9935
9936 err = niu_init_hw(np);
9937 if (!err) {
9938 np->timer.expires = jiffies + HZ;
9939 add_timer(&np->timer);
9940 niu_netif_start(np);
9941 }
9942
9943 spin_unlock_irqrestore(&np->lock, flags);
9944
9945 return err;
9946 }
9947
9948 static struct pci_driver niu_pci_driver = {
9949 .name = DRV_MODULE_NAME,
9950 .id_table = niu_pci_tbl,
9951 .probe = niu_pci_init_one,
9952 .remove = niu_pci_remove_one,
9953 .suspend = niu_suspend,
9954 .resume = niu_resume,
9955 };
9956
9957 #ifdef CONFIG_SPARC64
9958 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9959 u64 *dma_addr, gfp_t flag)
9960 {
9961 unsigned long order = get_order(size);
9962 unsigned long page = __get_free_pages(flag, order);
9963
9964 if (page == 0UL)
9965 return NULL;
9966 memset((char *)page, 0, PAGE_SIZE << order);
9967 *dma_addr = __pa(page);
9968
9969 return (void *) page;
9970 }
9971
9972 static void niu_phys_free_coherent(struct device *dev, size_t size,
9973 void *cpu_addr, u64 handle)
9974 {
9975 unsigned long order = get_order(size);
9976
9977 free_pages((unsigned long) cpu_addr, order);
9978 }
9979
9980 static u64 niu_phys_map_page(struct device *dev, struct page *page,
9981 unsigned long offset, size_t size,
9982 enum dma_data_direction direction)
9983 {
9984 return page_to_phys(page) + offset;
9985 }
9986
9987 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
9988 size_t size, enum dma_data_direction direction)
9989 {
9990 /* Nothing to do. */
9991 }
9992
9993 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
9994 size_t size,
9995 enum dma_data_direction direction)
9996 {
9997 return __pa(cpu_addr);
9998 }
9999
10000 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10001 size_t size,
10002 enum dma_data_direction direction)
10003 {
10004 /* Nothing to do. */
10005 }
10006
10007 static const struct niu_ops niu_phys_ops = {
10008 .alloc_coherent = niu_phys_alloc_coherent,
10009 .free_coherent = niu_phys_free_coherent,
10010 .map_page = niu_phys_map_page,
10011 .unmap_page = niu_phys_unmap_page,
10012 .map_single = niu_phys_map_single,
10013 .unmap_single = niu_phys_unmap_single,
10014 };
10015
10016 static int niu_of_probe(struct platform_device *op)
10017 {
10018 union niu_parent_id parent_id;
10019 struct net_device *dev;
10020 struct niu *np;
10021 const u32 *reg;
10022 int err;
10023
10024 niu_driver_version();
10025
10026 reg = of_get_property(op->dev.of_node, "reg", NULL);
10027 if (!reg) {
10028 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10029 op->dev.of_node->full_name);
10030 return -ENODEV;
10031 }
10032
10033 dev = niu_alloc_and_init(&op->dev, NULL, op,
10034 &niu_phys_ops, reg[0] & 0x1);
10035 if (!dev) {
10036 err = -ENOMEM;
10037 goto err_out;
10038 }
10039 np = netdev_priv(dev);
10040
10041 memset(&parent_id, 0, sizeof(parent_id));
10042 parent_id.of = of_get_parent(op->dev.of_node);
10043
10044 np->parent = niu_get_parent(np, &parent_id,
10045 PLAT_TYPE_NIU);
10046 if (!np->parent) {
10047 err = -ENOMEM;
10048 goto err_out_free_dev;
10049 }
10050
10051 niu_set_basic_features(dev);
10052
10053 np->regs = of_ioremap(&op->resource[1], 0,
10054 resource_size(&op->resource[1]),
10055 "niu regs");
10056 if (!np->regs) {
10057 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10058 err = -ENOMEM;
10059 goto err_out_release_parent;
10060 }
10061
10062 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10063 resource_size(&op->resource[2]),
10064 "niu vregs-1");
10065 if (!np->vir_regs_1) {
10066 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10067 err = -ENOMEM;
10068 goto err_out_iounmap;
10069 }
10070
10071 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10072 resource_size(&op->resource[3]),
10073 "niu vregs-2");
10074 if (!np->vir_regs_2) {
10075 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10076 err = -ENOMEM;
10077 goto err_out_iounmap;
10078 }
10079
10080 niu_assign_netdev_ops(dev);
10081
10082 err = niu_get_invariants(np);
10083 if (err) {
10084 if (err != -ENODEV)
10085 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10086 goto err_out_iounmap;
10087 }
10088
10089 err = register_netdev(dev);
10090 if (err) {
10091 dev_err(&op->dev, "Cannot register net device, aborting\n");
10092 goto err_out_iounmap;
10093 }
10094
10095 platform_set_drvdata(op, dev);
10096
10097 niu_device_announce(np);
10098
10099 return 0;
10100
10101 err_out_iounmap:
10102 if (np->vir_regs_1) {
10103 of_iounmap(&op->resource[2], np->vir_regs_1,
10104 resource_size(&op->resource[2]));
10105 np->vir_regs_1 = NULL;
10106 }
10107
10108 if (np->vir_regs_2) {
10109 of_iounmap(&op->resource[3], np->vir_regs_2,
10110 resource_size(&op->resource[3]));
10111 np->vir_regs_2 = NULL;
10112 }
10113
10114 if (np->regs) {
10115 of_iounmap(&op->resource[1], np->regs,
10116 resource_size(&op->resource[1]));
10117 np->regs = NULL;
10118 }
10119
10120 err_out_release_parent:
10121 niu_put_parent(np);
10122
10123 err_out_free_dev:
10124 free_netdev(dev);
10125
10126 err_out:
10127 return err;
10128 }
10129
10130 static int niu_of_remove(struct platform_device *op)
10131 {
10132 struct net_device *dev = platform_get_drvdata(op);
10133
10134 if (dev) {
10135 struct niu *np = netdev_priv(dev);
10136
10137 unregister_netdev(dev);
10138
10139 if (np->vir_regs_1) {
10140 of_iounmap(&op->resource[2], np->vir_regs_1,
10141 resource_size(&op->resource[2]));
10142 np->vir_regs_1 = NULL;
10143 }
10144
10145 if (np->vir_regs_2) {
10146 of_iounmap(&op->resource[3], np->vir_regs_2,
10147 resource_size(&op->resource[3]));
10148 np->vir_regs_2 = NULL;
10149 }
10150
10151 if (np->regs) {
10152 of_iounmap(&op->resource[1], np->regs,
10153 resource_size(&op->resource[1]));
10154 np->regs = NULL;
10155 }
10156
10157 niu_ldg_free(np);
10158
10159 niu_put_parent(np);
10160
10161 free_netdev(dev);
10162 }
10163 return 0;
10164 }
10165
10166 static const struct of_device_id niu_match[] = {
10167 {
10168 .name = "network",
10169 .compatible = "SUNW,niusl",
10170 },
10171 {},
10172 };
10173 MODULE_DEVICE_TABLE(of, niu_match);
10174
10175 static struct platform_driver niu_of_driver = {
10176 .driver = {
10177 .name = "niu",
10178 .of_match_table = niu_match,
10179 },
10180 .probe = niu_of_probe,
10181 .remove = niu_of_remove,
10182 };
10183
10184 #endif /* CONFIG_SPARC64 */
10185
10186 static int __init niu_init(void)
10187 {
10188 int err = 0;
10189
10190 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10191
10192 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10193
10194 #ifdef CONFIG_SPARC64
10195 err = platform_driver_register(&niu_of_driver);
10196 #endif
10197
10198 if (!err) {
10199 err = pci_register_driver(&niu_pci_driver);
10200 #ifdef CONFIG_SPARC64
10201 if (err)
10202 platform_driver_unregister(&niu_of_driver);
10203 #endif
10204 }
10205
10206 return err;
10207 }
10208
10209 static void __exit niu_exit(void)
10210 {
10211 pci_unregister_driver(&niu_pci_driver);
10212 #ifdef CONFIG_SPARC64
10213 platform_driver_unregister(&niu_of_driver);
10214 #endif
10215 }
10216
10217 module_init(niu_init);
10218 module_exit(niu_exit);
Linux with added FPC-III support