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mac80211: fix race condition caused by late addBA response
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / niu.c
blobed47585a6862b2d49af9e51a3f1ac3cab70ce3f6
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_ether.h>
21 #include <linux/if_vlan.h>
22 #include <linux/ip.h>
23 #include <linux/in.h>
24 #include <linux/ipv6.h>
25 #include <linux/log2.h>
26 #include <linux/jiffies.h>
27 #include <linux/crc32.h>
28 #include <linux/list.h>
29 #include <linux/slab.h>
30
31 #include <linux/io.h>
32 #include <linux/of_device.h>
33
34 #include "niu.h"
35
36 #define DRV_MODULE_NAME "niu"
37 #define DRV_MODULE_VERSION "1.1"
38 #define DRV_MODULE_RELDATE "Apr 22, 2010"
39
40 static char version[] __devinitdata =
41 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
42
43 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
44 MODULE_DESCRIPTION("NIU ethernet driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(DRV_MODULE_VERSION);
47
48 #ifndef readq
49 static u64 readq(void __iomem *reg)
50 {
51 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
52 }
53
54 static void writeq(u64 val, void __iomem *reg)
55 {
56 writel(val & 0xffffffff, reg);
57 writel(val >> 32, reg + 0x4UL);
58 }
59 #endif
60
61 static DEFINE_PCI_DEVICE_TABLE(niu_pci_tbl) = {
62 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
63 {}
64 };
65
66 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
67
68 #define NIU_TX_TIMEOUT (5 * HZ)
69
70 #define nr64(reg) readq(np->regs + (reg))
71 #define nw64(reg, val) writeq((val), np->regs + (reg))
72
73 #define nr64_mac(reg) readq(np->mac_regs + (reg))
74 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
75
76 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
77 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
78
79 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
80 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
81
82 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
83 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
84
85 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
86
87 static int niu_debug;
88 static int debug = -1;
89 module_param(debug, int, 0);
90 MODULE_PARM_DESC(debug, "NIU debug level");
91
92 #define niu_lock_parent(np, flags) \
93 spin_lock_irqsave(&np->parent->lock, flags)
94 #define niu_unlock_parent(np, flags) \
95 spin_unlock_irqrestore(&np->parent->lock, flags)
96
97 static int serdes_init_10g_serdes(struct niu *np);
98
99 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
100 u64 bits, int limit, int delay)
101 {
102 while (--limit >= 0) {
103 u64 val = nr64_mac(reg);
104
105 if (!(val & bits))
106 break;
107 udelay(delay);
108 }
109 if (limit < 0)
110 return -ENODEV;
111 return 0;
112 }
113
114 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
115 u64 bits, int limit, int delay,
116 const char *reg_name)
117 {
118 int err;
119
120 nw64_mac(reg, bits);
121 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
122 if (err)
123 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
124 (unsigned long long)bits, reg_name,
125 (unsigned long long)nr64_mac(reg));
126 return err;
127 }
128
129 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
130 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
131 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
132 })
133
134 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
135 u64 bits, int limit, int delay)
136 {
137 while (--limit >= 0) {
138 u64 val = nr64_ipp(reg);
139
140 if (!(val & bits))
141 break;
142 udelay(delay);
143 }
144 if (limit < 0)
145 return -ENODEV;
146 return 0;
147 }
148
149 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
150 u64 bits, int limit, int delay,
151 const char *reg_name)
152 {
153 int err;
154 u64 val;
155
156 val = nr64_ipp(reg);
157 val |= bits;
158 nw64_ipp(reg, val);
159
160 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
161 if (err)
162 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
163 (unsigned long long)bits, reg_name,
164 (unsigned long long)nr64_ipp(reg));
165 return err;
166 }
167
168 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
169 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
170 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
171 })
172
173 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
174 u64 bits, int limit, int delay)
175 {
176 while (--limit >= 0) {
177 u64 val = nr64(reg);
178
179 if (!(val & bits))
180 break;
181 udelay(delay);
182 }
183 if (limit < 0)
184 return -ENODEV;
185 return 0;
186 }
187
188 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
189 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
190 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
191 })
192
193 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
194 u64 bits, int limit, int delay,
195 const char *reg_name)
196 {
197 int err;
198
199 nw64(reg, bits);
200 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
201 if (err)
202 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
203 (unsigned long long)bits, reg_name,
204 (unsigned long long)nr64(reg));
205 return err;
206 }
207
208 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
209 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
210 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
211 })
212
213 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
214 {
215 u64 val = (u64) lp->timer;
216
217 if (on)
218 val |= LDG_IMGMT_ARM;
219
220 nw64(LDG_IMGMT(lp->ldg_num), val);
221 }
222
223 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
224 {
225 unsigned long mask_reg, bits;
226 u64 val;
227
228 if (ldn < 0 || ldn > LDN_MAX)
229 return -EINVAL;
230
231 if (ldn < 64) {
232 mask_reg = LD_IM0(ldn);
233 bits = LD_IM0_MASK;
234 } else {
235 mask_reg = LD_IM1(ldn - 64);
236 bits = LD_IM1_MASK;
237 }
238
239 val = nr64(mask_reg);
240 if (on)
241 val &= ~bits;
242 else
243 val |= bits;
244 nw64(mask_reg, val);
245
246 return 0;
247 }
248
249 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
250 {
251 struct niu_parent *parent = np->parent;
252 int i;
253
254 for (i = 0; i <= LDN_MAX; i++) {
255 int err;
256
257 if (parent->ldg_map[i] != lp->ldg_num)
258 continue;
259
260 err = niu_ldn_irq_enable(np, i, on);
261 if (err)
262 return err;
263 }
264 return 0;
265 }
266
267 static int niu_enable_interrupts(struct niu *np, int on)
268 {
269 int i;
270
271 for (i = 0; i < np->num_ldg; i++) {
272 struct niu_ldg *lp = &np->ldg[i];
273 int err;
274
275 err = niu_enable_ldn_in_ldg(np, lp, on);
276 if (err)
277 return err;
278 }
279 for (i = 0; i < np->num_ldg; i++)
280 niu_ldg_rearm(np, &np->ldg[i], on);
281
282 return 0;
283 }
284
285 static u32 phy_encode(u32 type, int port)
286 {
287 return type << (port * 2);
288 }
289
290 static u32 phy_decode(u32 val, int port)
291 {
292 return (val >> (port * 2)) & PORT_TYPE_MASK;
293 }
294
295 static int mdio_wait(struct niu *np)
296 {
297 int limit = 1000;
298 u64 val;
299
300 while (--limit > 0) {
301 val = nr64(MIF_FRAME_OUTPUT);
302 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
303 return val & MIF_FRAME_OUTPUT_DATA;
304
305 udelay(10);
306 }
307
308 return -ENODEV;
309 }
310
311 static int mdio_read(struct niu *np, int port, int dev, int reg)
312 {
313 int err;
314
315 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
316 err = mdio_wait(np);
317 if (err < 0)
318 return err;
319
320 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
321 return mdio_wait(np);
322 }
323
324 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
325 {
326 int err;
327
328 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
329 err = mdio_wait(np);
330 if (err < 0)
331 return err;
332
333 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
334 err = mdio_wait(np);
335 if (err < 0)
336 return err;
337
338 return 0;
339 }
340
341 static int mii_read(struct niu *np, int port, int reg)
342 {
343 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
344 return mdio_wait(np);
345 }
346
347 static int mii_write(struct niu *np, int port, int reg, int data)
348 {
349 int err;
350
351 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
352 err = mdio_wait(np);
353 if (err < 0)
354 return err;
355
356 return 0;
357 }
358
359 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
360 {
361 int err;
362
363 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
364 ESR2_TI_PLL_TX_CFG_L(channel),
365 val & 0xffff);
366 if (!err)
367 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
368 ESR2_TI_PLL_TX_CFG_H(channel),
369 val >> 16);
370 return err;
371 }
372
373 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
374 {
375 int err;
376
377 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
378 ESR2_TI_PLL_RX_CFG_L(channel),
379 val & 0xffff);
380 if (!err)
381 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
382 ESR2_TI_PLL_RX_CFG_H(channel),
383 val >> 16);
384 return err;
385 }
386
387 /* Mode is always 10G fiber. */
388 static int serdes_init_niu_10g_fiber(struct niu *np)
389 {
390 struct niu_link_config *lp = &np->link_config;
391 u32 tx_cfg, rx_cfg;
392 unsigned long i;
393
394 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
395 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
396 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
397 PLL_RX_CFG_EQ_LP_ADAPTIVE);
398
399 if (lp->loopback_mode == LOOPBACK_PHY) {
400 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
401
402 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
403 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
404
405 tx_cfg |= PLL_TX_CFG_ENTEST;
406 rx_cfg |= PLL_RX_CFG_ENTEST;
407 }
408
409 /* Initialize all 4 lanes of the SERDES. */
410 for (i = 0; i < 4; i++) {
411 int err = esr2_set_tx_cfg(np, i, tx_cfg);
412 if (err)
413 return err;
414 }
415
416 for (i = 0; i < 4; i++) {
417 int err = esr2_set_rx_cfg(np, i, rx_cfg);
418 if (err)
419 return err;
420 }
421
422 return 0;
423 }
424
425 static int serdes_init_niu_1g_serdes(struct niu *np)
426 {
427 struct niu_link_config *lp = &np->link_config;
428 u16 pll_cfg, pll_sts;
429 int max_retry = 100;
430 u64 uninitialized_var(sig), mask, val;
431 u32 tx_cfg, rx_cfg;
432 unsigned long i;
433 int err;
434
435 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
436 PLL_TX_CFG_RATE_HALF);
437 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
438 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
439 PLL_RX_CFG_RATE_HALF);
440
441 if (np->port == 0)
442 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
443
444 if (lp->loopback_mode == LOOPBACK_PHY) {
445 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
446
447 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
448 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
449
450 tx_cfg |= PLL_TX_CFG_ENTEST;
451 rx_cfg |= PLL_RX_CFG_ENTEST;
452 }
453
454 /* Initialize PLL for 1G */
455 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
456
457 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
458 ESR2_TI_PLL_CFG_L, pll_cfg);
459 if (err) {
460 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
461 np->port, __func__);
462 return err;
463 }
464
465 pll_sts = PLL_CFG_ENPLL;
466
467 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
468 ESR2_TI_PLL_STS_L, pll_sts);
469 if (err) {
470 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
471 np->port, __func__);
472 return err;
473 }
474
475 udelay(200);
476
477 /* Initialize all 4 lanes of the SERDES. */
478 for (i = 0; i < 4; i++) {
479 err = esr2_set_tx_cfg(np, i, tx_cfg);
480 if (err)
481 return err;
482 }
483
484 for (i = 0; i < 4; i++) {
485 err = esr2_set_rx_cfg(np, i, rx_cfg);
486 if (err)
487 return err;
488 }
489
490 switch (np->port) {
491 case 0:
492 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
493 mask = val;
494 break;
495
496 case 1:
497 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
498 mask = val;
499 break;
500
501 default:
502 return -EINVAL;
503 }
504
505 while (max_retry--) {
506 sig = nr64(ESR_INT_SIGNALS);
507 if ((sig & mask) == val)
508 break;
509
510 mdelay(500);
511 }
512
513 if ((sig & mask) != val) {
514 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
515 np->port, (int)(sig & mask), (int)val);
516 return -ENODEV;
517 }
518
519 return 0;
520 }
521
522 static int serdes_init_niu_10g_serdes(struct niu *np)
523 {
524 struct niu_link_config *lp = &np->link_config;
525 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
526 int max_retry = 100;
527 u64 uninitialized_var(sig), mask, val;
528 unsigned long i;
529 int err;
530
531 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
532 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
533 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
534 PLL_RX_CFG_EQ_LP_ADAPTIVE);
535
536 if (lp->loopback_mode == LOOPBACK_PHY) {
537 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
538
539 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
540 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
541
542 tx_cfg |= PLL_TX_CFG_ENTEST;
543 rx_cfg |= PLL_RX_CFG_ENTEST;
544 }
545
546 /* Initialize PLL for 10G */
547 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
548
549 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
550 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
551 if (err) {
552 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
553 np->port, __func__);
554 return err;
555 }
556
557 pll_sts = PLL_CFG_ENPLL;
558
559 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
560 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
561 if (err) {
562 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
563 np->port, __func__);
564 return err;
565 }
566
567 udelay(200);
568
569 /* Initialize all 4 lanes of the SERDES. */
570 for (i = 0; i < 4; i++) {
571 err = esr2_set_tx_cfg(np, i, tx_cfg);
572 if (err)
573 return err;
574 }
575
576 for (i = 0; i < 4; i++) {
577 err = esr2_set_rx_cfg(np, i, rx_cfg);
578 if (err)
579 return err;
580 }
581
582 /* check if serdes is ready */
583
584 switch (np->port) {
585 case 0:
586 mask = ESR_INT_SIGNALS_P0_BITS;
587 val = (ESR_INT_SRDY0_P0 |
588 ESR_INT_DET0_P0 |
589 ESR_INT_XSRDY_P0 |
590 ESR_INT_XDP_P0_CH3 |
591 ESR_INT_XDP_P0_CH2 |
592 ESR_INT_XDP_P0_CH1 |
593 ESR_INT_XDP_P0_CH0);
594 break;
595
596 case 1:
597 mask = ESR_INT_SIGNALS_P1_BITS;
598 val = (ESR_INT_SRDY0_P1 |
599 ESR_INT_DET0_P1 |
600 ESR_INT_XSRDY_P1 |
601 ESR_INT_XDP_P1_CH3 |
602 ESR_INT_XDP_P1_CH2 |
603 ESR_INT_XDP_P1_CH1 |
604 ESR_INT_XDP_P1_CH0);
605 break;
606
607 default:
608 return -EINVAL;
609 }
610
611 while (max_retry--) {
612 sig = nr64(ESR_INT_SIGNALS);
613 if ((sig & mask) == val)
614 break;
615
616 mdelay(500);
617 }
618
619 if ((sig & mask) != val) {
620 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
621 np->port, (int)(sig & mask), (int)val);
622
623 /* 10G failed, try initializing at 1G */
624 err = serdes_init_niu_1g_serdes(np);
625 if (!err) {
626 np->flags &= ~NIU_FLAGS_10G;
627 np->mac_xcvr = MAC_XCVR_PCS;
628 } else {
629 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
630 np->port);
631 return -ENODEV;
632 }
633 }
634 return 0;
635 }
636
637 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
638 {
639 int err;
640
641 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
642 if (err >= 0) {
643 *val = (err & 0xffff);
644 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
645 ESR_RXTX_CTRL_H(chan));
646 if (err >= 0)
647 *val |= ((err & 0xffff) << 16);
648 err = 0;
649 }
650 return err;
651 }
652
653 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
654 {
655 int err;
656
657 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
658 ESR_GLUE_CTRL0_L(chan));
659 if (err >= 0) {
660 *val = (err & 0xffff);
661 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
662 ESR_GLUE_CTRL0_H(chan));
663 if (err >= 0) {
664 *val |= ((err & 0xffff) << 16);
665 err = 0;
666 }
667 }
668 return err;
669 }
670
671 static int esr_read_reset(struct niu *np, u32 *val)
672 {
673 int err;
674
675 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
676 ESR_RXTX_RESET_CTRL_L);
677 if (err >= 0) {
678 *val = (err & 0xffff);
679 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
680 ESR_RXTX_RESET_CTRL_H);
681 if (err >= 0) {
682 *val |= ((err & 0xffff) << 16);
683 err = 0;
684 }
685 }
686 return err;
687 }
688
689 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
690 {
691 int err;
692
693 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
694 ESR_RXTX_CTRL_L(chan), val & 0xffff);
695 if (!err)
696 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
697 ESR_RXTX_CTRL_H(chan), (val >> 16));
698 return err;
699 }
700
701 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
702 {
703 int err;
704
705 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
706 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
707 if (!err)
708 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
709 ESR_GLUE_CTRL0_H(chan), (val >> 16));
710 return err;
711 }
712
713 static int esr_reset(struct niu *np)
714 {
715 u32 uninitialized_var(reset);
716 int err;
717
718 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
719 ESR_RXTX_RESET_CTRL_L, 0x0000);
720 if (err)
721 return err;
722 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
723 ESR_RXTX_RESET_CTRL_H, 0xffff);
724 if (err)
725 return err;
726 udelay(200);
727
728 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
729 ESR_RXTX_RESET_CTRL_L, 0xffff);
730 if (err)
731 return err;
732 udelay(200);
733
734 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
735 ESR_RXTX_RESET_CTRL_H, 0x0000);
736 if (err)
737 return err;
738 udelay(200);
739
740 err = esr_read_reset(np, &reset);
741 if (err)
742 return err;
743 if (reset != 0) {
744 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
745 np->port, reset);
746 return -ENODEV;
747 }
748
749 return 0;
750 }
751
752 static int serdes_init_10g(struct niu *np)
753 {
754 struct niu_link_config *lp = &np->link_config;
755 unsigned long ctrl_reg, test_cfg_reg, i;
756 u64 ctrl_val, test_cfg_val, sig, mask, val;
757 int err;
758
759 switch (np->port) {
760 case 0:
761 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
762 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
763 break;
764 case 1:
765 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
766 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
767 break;
768
769 default:
770 return -EINVAL;
771 }
772 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
773 ENET_SERDES_CTRL_SDET_1 |
774 ENET_SERDES_CTRL_SDET_2 |
775 ENET_SERDES_CTRL_SDET_3 |
776 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
777 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
778 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
779 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
780 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
781 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
782 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
783 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
784 test_cfg_val = 0;
785
786 if (lp->loopback_mode == LOOPBACK_PHY) {
787 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
788 ENET_SERDES_TEST_MD_0_SHIFT) |
789 (ENET_TEST_MD_PAD_LOOPBACK <<
790 ENET_SERDES_TEST_MD_1_SHIFT) |
791 (ENET_TEST_MD_PAD_LOOPBACK <<
792 ENET_SERDES_TEST_MD_2_SHIFT) |
793 (ENET_TEST_MD_PAD_LOOPBACK <<
794 ENET_SERDES_TEST_MD_3_SHIFT));
795 }
796
797 nw64(ctrl_reg, ctrl_val);
798 nw64(test_cfg_reg, test_cfg_val);
799
800 /* Initialize all 4 lanes of the SERDES. */
801 for (i = 0; i < 4; i++) {
802 u32 rxtx_ctrl, glue0;
803
804 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
805 if (err)
806 return err;
807 err = esr_read_glue0(np, i, &glue0);
808 if (err)
809 return err;
810
811 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
812 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
813 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
814
815 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
816 ESR_GLUE_CTRL0_THCNT |
817 ESR_GLUE_CTRL0_BLTIME);
818 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
819 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
820 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
821 (BLTIME_300_CYCLES <<
822 ESR_GLUE_CTRL0_BLTIME_SHIFT));
823
824 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
825 if (err)
826 return err;
827 err = esr_write_glue0(np, i, glue0);
828 if (err)
829 return err;
830 }
831
832 err = esr_reset(np);
833 if (err)
834 return err;
835
836 sig = nr64(ESR_INT_SIGNALS);
837 switch (np->port) {
838 case 0:
839 mask = ESR_INT_SIGNALS_P0_BITS;
840 val = (ESR_INT_SRDY0_P0 |
841 ESR_INT_DET0_P0 |
842 ESR_INT_XSRDY_P0 |
843 ESR_INT_XDP_P0_CH3 |
844 ESR_INT_XDP_P0_CH2 |
845 ESR_INT_XDP_P0_CH1 |
846 ESR_INT_XDP_P0_CH0);
847 break;
848
849 case 1:
850 mask = ESR_INT_SIGNALS_P1_BITS;
851 val = (ESR_INT_SRDY0_P1 |
852 ESR_INT_DET0_P1 |
853 ESR_INT_XSRDY_P1 |
854 ESR_INT_XDP_P1_CH3 |
855 ESR_INT_XDP_P1_CH2 |
856 ESR_INT_XDP_P1_CH1 |
857 ESR_INT_XDP_P1_CH0);
858 break;
859
860 default:
861 return -EINVAL;
862 }
863
864 if ((sig & mask) != val) {
865 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
866 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
867 return 0;
868 }
869 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
870 np->port, (int)(sig & mask), (int)val);
871 return -ENODEV;
872 }
873 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
874 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
875 return 0;
876 }
877
878 static int serdes_init_1g(struct niu *np)
879 {
880 u64 val;
881
882 val = nr64(ENET_SERDES_1_PLL_CFG);
883 val &= ~ENET_SERDES_PLL_FBDIV2;
884 switch (np->port) {
885 case 0:
886 val |= ENET_SERDES_PLL_HRATE0;
887 break;
888 case 1:
889 val |= ENET_SERDES_PLL_HRATE1;
890 break;
891 case 2:
892 val |= ENET_SERDES_PLL_HRATE2;
893 break;
894 case 3:
895 val |= ENET_SERDES_PLL_HRATE3;
896 break;
897 default:
898 return -EINVAL;
899 }
900 nw64(ENET_SERDES_1_PLL_CFG, val);
901
902 return 0;
903 }
904
905 static int serdes_init_1g_serdes(struct niu *np)
906 {
907 struct niu_link_config *lp = &np->link_config;
908 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
909 u64 ctrl_val, test_cfg_val, sig, mask, val;
910 int err;
911 u64 reset_val, val_rd;
912
913 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
914 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
915 ENET_SERDES_PLL_FBDIV0;
916 switch (np->port) {
917 case 0:
918 reset_val = ENET_SERDES_RESET_0;
919 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
920 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
921 pll_cfg = ENET_SERDES_0_PLL_CFG;
922 break;
923 case 1:
924 reset_val = ENET_SERDES_RESET_1;
925 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
926 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
927 pll_cfg = ENET_SERDES_1_PLL_CFG;
928 break;
929
930 default:
931 return -EINVAL;
932 }
933 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
934 ENET_SERDES_CTRL_SDET_1 |
935 ENET_SERDES_CTRL_SDET_2 |
936 ENET_SERDES_CTRL_SDET_3 |
937 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
938 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
939 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
940 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
941 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
942 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
943 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
944 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
945 test_cfg_val = 0;
946
947 if (lp->loopback_mode == LOOPBACK_PHY) {
948 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
949 ENET_SERDES_TEST_MD_0_SHIFT) |
950 (ENET_TEST_MD_PAD_LOOPBACK <<
951 ENET_SERDES_TEST_MD_1_SHIFT) |
952 (ENET_TEST_MD_PAD_LOOPBACK <<
953 ENET_SERDES_TEST_MD_2_SHIFT) |
954 (ENET_TEST_MD_PAD_LOOPBACK <<
955 ENET_SERDES_TEST_MD_3_SHIFT));
956 }
957
958 nw64(ENET_SERDES_RESET, reset_val);
959 mdelay(20);
960 val_rd = nr64(ENET_SERDES_RESET);
961 val_rd &= ~reset_val;
962 nw64(pll_cfg, val);
963 nw64(ctrl_reg, ctrl_val);
964 nw64(test_cfg_reg, test_cfg_val);
965 nw64(ENET_SERDES_RESET, val_rd);
966 mdelay(2000);
967
968 /* Initialize all 4 lanes of the SERDES. */
969 for (i = 0; i < 4; i++) {
970 u32 rxtx_ctrl, glue0;
971
972 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
973 if (err)
974 return err;
975 err = esr_read_glue0(np, i, &glue0);
976 if (err)
977 return err;
978
979 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
980 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
981 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
982
983 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
984 ESR_GLUE_CTRL0_THCNT |
985 ESR_GLUE_CTRL0_BLTIME);
986 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
987 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
988 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
989 (BLTIME_300_CYCLES <<
990 ESR_GLUE_CTRL0_BLTIME_SHIFT));
991
992 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
993 if (err)
994 return err;
995 err = esr_write_glue0(np, i, glue0);
996 if (err)
997 return err;
998 }
999
1000
1001 sig = nr64(ESR_INT_SIGNALS);
1002 switch (np->port) {
1003 case 0:
1004 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1005 mask = val;
1006 break;
1007
1008 case 1:
1009 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1010 mask = val;
1011 break;
1012
1013 default:
1014 return -EINVAL;
1015 }
1016
1017 if ((sig & mask) != val) {
1018 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1019 np->port, (int)(sig & mask), (int)val);
1020 return -ENODEV;
1021 }
1022
1023 return 0;
1024 }
1025
1026 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1027 {
1028 struct niu_link_config *lp = &np->link_config;
1029 int link_up;
1030 u64 val;
1031 u16 current_speed;
1032 unsigned long flags;
1033 u8 current_duplex;
1034
1035 link_up = 0;
1036 current_speed = SPEED_INVALID;
1037 current_duplex = DUPLEX_INVALID;
1038
1039 spin_lock_irqsave(&np->lock, flags);
1040
1041 val = nr64_pcs(PCS_MII_STAT);
1042
1043 if (val & PCS_MII_STAT_LINK_STATUS) {
1044 link_up = 1;
1045 current_speed = SPEED_1000;
1046 current_duplex = DUPLEX_FULL;
1047 }
1048
1049 lp->active_speed = current_speed;
1050 lp->active_duplex = current_duplex;
1051 spin_unlock_irqrestore(&np->lock, flags);
1052
1053 *link_up_p = link_up;
1054 return 0;
1055 }
1056
1057 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1058 {
1059 unsigned long flags;
1060 struct niu_link_config *lp = &np->link_config;
1061 int link_up = 0;
1062 int link_ok = 1;
1063 u64 val, val2;
1064 u16 current_speed;
1065 u8 current_duplex;
1066
1067 if (!(np->flags & NIU_FLAGS_10G))
1068 return link_status_1g_serdes(np, link_up_p);
1069
1070 current_speed = SPEED_INVALID;
1071 current_duplex = DUPLEX_INVALID;
1072 spin_lock_irqsave(&np->lock, flags);
1073
1074 val = nr64_xpcs(XPCS_STATUS(0));
1075 val2 = nr64_mac(XMAC_INTER2);
1076 if (val2 & 0x01000000)
1077 link_ok = 0;
1078
1079 if ((val & 0x1000ULL) && link_ok) {
1080 link_up = 1;
1081 current_speed = SPEED_10000;
1082 current_duplex = DUPLEX_FULL;
1083 }
1084 lp->active_speed = current_speed;
1085 lp->active_duplex = current_duplex;
1086 spin_unlock_irqrestore(&np->lock, flags);
1087 *link_up_p = link_up;
1088 return 0;
1089 }
1090
1091 static int link_status_mii(struct niu *np, int *link_up_p)
1092 {
1093 struct niu_link_config *lp = &np->link_config;
1094 int err;
1095 int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1096 int supported, advertising, active_speed, active_duplex;
1097
1098 err = mii_read(np, np->phy_addr, MII_BMCR);
1099 if (unlikely(err < 0))
1100 return err;
1101 bmcr = err;
1102
1103 err = mii_read(np, np->phy_addr, MII_BMSR);
1104 if (unlikely(err < 0))
1105 return err;
1106 bmsr = err;
1107
1108 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1109 if (unlikely(err < 0))
1110 return err;
1111 advert = err;
1112
1113 err = mii_read(np, np->phy_addr, MII_LPA);
1114 if (unlikely(err < 0))
1115 return err;
1116 lpa = err;
1117
1118 if (likely(bmsr & BMSR_ESTATEN)) {
1119 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1120 if (unlikely(err < 0))
1121 return err;
1122 estatus = err;
1123
1124 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1125 if (unlikely(err < 0))
1126 return err;
1127 ctrl1000 = err;
1128
1129 err = mii_read(np, np->phy_addr, MII_STAT1000);
1130 if (unlikely(err < 0))
1131 return err;
1132 stat1000 = err;
1133 } else
1134 estatus = ctrl1000 = stat1000 = 0;
1135
1136 supported = 0;
1137 if (bmsr & BMSR_ANEGCAPABLE)
1138 supported |= SUPPORTED_Autoneg;
1139 if (bmsr & BMSR_10HALF)
1140 supported |= SUPPORTED_10baseT_Half;
1141 if (bmsr & BMSR_10FULL)
1142 supported |= SUPPORTED_10baseT_Full;
1143 if (bmsr & BMSR_100HALF)
1144 supported |= SUPPORTED_100baseT_Half;
1145 if (bmsr & BMSR_100FULL)
1146 supported |= SUPPORTED_100baseT_Full;
1147 if (estatus & ESTATUS_1000_THALF)
1148 supported |= SUPPORTED_1000baseT_Half;
1149 if (estatus & ESTATUS_1000_TFULL)
1150 supported |= SUPPORTED_1000baseT_Full;
1151 lp->supported = supported;
1152
1153 advertising = 0;
1154 if (advert & ADVERTISE_10HALF)
1155 advertising |= ADVERTISED_10baseT_Half;
1156 if (advert & ADVERTISE_10FULL)
1157 advertising |= ADVERTISED_10baseT_Full;
1158 if (advert & ADVERTISE_100HALF)
1159 advertising |= ADVERTISED_100baseT_Half;
1160 if (advert & ADVERTISE_100FULL)
1161 advertising |= ADVERTISED_100baseT_Full;
1162 if (ctrl1000 & ADVERTISE_1000HALF)
1163 advertising |= ADVERTISED_1000baseT_Half;
1164 if (ctrl1000 & ADVERTISE_1000FULL)
1165 advertising |= ADVERTISED_1000baseT_Full;
1166
1167 if (bmcr & BMCR_ANENABLE) {
1168 int neg, neg1000;
1169
1170 lp->active_autoneg = 1;
1171 advertising |= ADVERTISED_Autoneg;
1172
1173 neg = advert & lpa;
1174 neg1000 = (ctrl1000 << 2) & stat1000;
1175
1176 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1177 active_speed = SPEED_1000;
1178 else if (neg & LPA_100)
1179 active_speed = SPEED_100;
1180 else if (neg & (LPA_10HALF | LPA_10FULL))
1181 active_speed = SPEED_10;
1182 else
1183 active_speed = SPEED_INVALID;
1184
1185 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1186 active_duplex = DUPLEX_FULL;
1187 else if (active_speed != SPEED_INVALID)
1188 active_duplex = DUPLEX_HALF;
1189 else
1190 active_duplex = DUPLEX_INVALID;
1191 } else {
1192 lp->active_autoneg = 0;
1193
1194 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1195 active_speed = SPEED_1000;
1196 else if (bmcr & BMCR_SPEED100)
1197 active_speed = SPEED_100;
1198 else
1199 active_speed = SPEED_10;
1200
1201 if (bmcr & BMCR_FULLDPLX)
1202 active_duplex = DUPLEX_FULL;
1203 else
1204 active_duplex = DUPLEX_HALF;
1205 }
1206
1207 lp->active_advertising = advertising;
1208 lp->active_speed = active_speed;
1209 lp->active_duplex = active_duplex;
1210 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1211
1212 return 0;
1213 }
1214
1215 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1216 {
1217 struct niu_link_config *lp = &np->link_config;
1218 u16 current_speed, bmsr;
1219 unsigned long flags;
1220 u8 current_duplex;
1221 int err, link_up;
1222
1223 link_up = 0;
1224 current_speed = SPEED_INVALID;
1225 current_duplex = DUPLEX_INVALID;
1226
1227 spin_lock_irqsave(&np->lock, flags);
1228
1229 err = -EINVAL;
1230
1231 err = mii_read(np, np->phy_addr, MII_BMSR);
1232 if (err < 0)
1233 goto out;
1234
1235 bmsr = err;
1236 if (bmsr & BMSR_LSTATUS) {
1237 u16 adv, lpa;
1238
1239 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1240 if (err < 0)
1241 goto out;
1242 adv = err;
1243
1244 err = mii_read(np, np->phy_addr, MII_LPA);
1245 if (err < 0)
1246 goto out;
1247 lpa = err;
1248
1249 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1250 if (err < 0)
1251 goto out;
1252 link_up = 1;
1253 current_speed = SPEED_1000;
1254 current_duplex = DUPLEX_FULL;
1255
1256 }
1257 lp->active_speed = current_speed;
1258 lp->active_duplex = current_duplex;
1259 err = 0;
1260
1261 out:
1262 spin_unlock_irqrestore(&np->lock, flags);
1263
1264 *link_up_p = link_up;
1265 return err;
1266 }
1267
1268 static int link_status_1g(struct niu *np, int *link_up_p)
1269 {
1270 struct niu_link_config *lp = &np->link_config;
1271 unsigned long flags;
1272 int err;
1273
1274 spin_lock_irqsave(&np->lock, flags);
1275
1276 err = link_status_mii(np, link_up_p);
1277 lp->supported |= SUPPORTED_TP;
1278 lp->active_advertising |= ADVERTISED_TP;
1279
1280 spin_unlock_irqrestore(&np->lock, flags);
1281 return err;
1282 }
1283
1284 static int bcm8704_reset(struct niu *np)
1285 {
1286 int err, limit;
1287
1288 err = mdio_read(np, np->phy_addr,
1289 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1290 if (err < 0 || err == 0xffff)
1291 return err;
1292 err |= BMCR_RESET;
1293 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1294 MII_BMCR, err);
1295 if (err)
1296 return err;
1297
1298 limit = 1000;
1299 while (--limit >= 0) {
1300 err = mdio_read(np, np->phy_addr,
1301 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1302 if (err < 0)
1303 return err;
1304 if (!(err & BMCR_RESET))
1305 break;
1306 }
1307 if (limit < 0) {
1308 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1309 np->port, (err & 0xffff));
1310 return -ENODEV;
1311 }
1312 return 0;
1313 }
1314
1315 /* When written, certain PHY registers need to be read back twice
1316 * in order for the bits to settle properly.
1317 */
1318 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1319 {
1320 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1321 if (err < 0)
1322 return err;
1323 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1324 if (err < 0)
1325 return err;
1326 return 0;
1327 }
1328
1329 static int bcm8706_init_user_dev3(struct niu *np)
1330 {
1331 int err;
1332
1333
1334 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1335 BCM8704_USER_OPT_DIGITAL_CTRL);
1336 if (err < 0)
1337 return err;
1338 err &= ~USER_ODIG_CTRL_GPIOS;
1339 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1340 err |= USER_ODIG_CTRL_RESV2;
1341 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1342 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1343 if (err)
1344 return err;
1345
1346 mdelay(1000);
1347
1348 return 0;
1349 }
1350
1351 static int bcm8704_init_user_dev3(struct niu *np)
1352 {
1353 int err;
1354
1355 err = mdio_write(np, np->phy_addr,
1356 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1357 (USER_CONTROL_OPTXRST_LVL |
1358 USER_CONTROL_OPBIASFLT_LVL |
1359 USER_CONTROL_OBTMPFLT_LVL |
1360 USER_CONTROL_OPPRFLT_LVL |
1361 USER_CONTROL_OPTXFLT_LVL |
1362 USER_CONTROL_OPRXLOS_LVL |
1363 USER_CONTROL_OPRXFLT_LVL |
1364 USER_CONTROL_OPTXON_LVL |
1365 (0x3f << USER_CONTROL_RES1_SHIFT)));
1366 if (err)
1367 return err;
1368
1369 err = mdio_write(np, np->phy_addr,
1370 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1371 (USER_PMD_TX_CTL_XFP_CLKEN |
1372 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1373 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1374 USER_PMD_TX_CTL_TSCK_LPWREN));
1375 if (err)
1376 return err;
1377
1378 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1379 if (err)
1380 return err;
1381 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1382 if (err)
1383 return err;
1384
1385 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1386 BCM8704_USER_OPT_DIGITAL_CTRL);
1387 if (err < 0)
1388 return err;
1389 err &= ~USER_ODIG_CTRL_GPIOS;
1390 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1391 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1392 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1393 if (err)
1394 return err;
1395
1396 mdelay(1000);
1397
1398 return 0;
1399 }
1400
1401 static int mrvl88x2011_act_led(struct niu *np, int val)
1402 {
1403 int err;
1404
1405 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1406 MRVL88X2011_LED_8_TO_11_CTL);
1407 if (err < 0)
1408 return err;
1409
1410 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1411 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1412
1413 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1414 MRVL88X2011_LED_8_TO_11_CTL, err);
1415 }
1416
1417 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1418 {
1419 int err;
1420
1421 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1422 MRVL88X2011_LED_BLINK_CTL);
1423 if (err >= 0) {
1424 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1425 err |= (rate << 4);
1426
1427 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1428 MRVL88X2011_LED_BLINK_CTL, err);
1429 }
1430
1431 return err;
1432 }
1433
1434 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1435 {
1436 int err;
1437
1438 /* Set LED functions */
1439 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1440 if (err)
1441 return err;
1442
1443 /* led activity */
1444 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1445 if (err)
1446 return err;
1447
1448 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1449 MRVL88X2011_GENERAL_CTL);
1450 if (err < 0)
1451 return err;
1452
1453 err |= MRVL88X2011_ENA_XFPREFCLK;
1454
1455 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1456 MRVL88X2011_GENERAL_CTL, err);
1457 if (err < 0)
1458 return err;
1459
1460 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1461 MRVL88X2011_PMA_PMD_CTL_1);
1462 if (err < 0)
1463 return err;
1464
1465 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1466 err |= MRVL88X2011_LOOPBACK;
1467 else
1468 err &= ~MRVL88X2011_LOOPBACK;
1469
1470 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1471 MRVL88X2011_PMA_PMD_CTL_1, err);
1472 if (err < 0)
1473 return err;
1474
1475 /* Enable PMD */
1476 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1477 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1478 }
1479
1480
1481 static int xcvr_diag_bcm870x(struct niu *np)
1482 {
1483 u16 analog_stat0, tx_alarm_status;
1484 int err = 0;
1485
1486 #if 1
1487 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1488 MII_STAT1000);
1489 if (err < 0)
1490 return err;
1491 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1492
1493 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1494 if (err < 0)
1495 return err;
1496 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1497
1498 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1499 MII_NWAYTEST);
1500 if (err < 0)
1501 return err;
1502 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1503 #endif
1504
1505 /* XXX dig this out it might not be so useful XXX */
1506 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1507 BCM8704_USER_ANALOG_STATUS0);
1508 if (err < 0)
1509 return err;
1510 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1511 BCM8704_USER_ANALOG_STATUS0);
1512 if (err < 0)
1513 return err;
1514 analog_stat0 = err;
1515
1516 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1517 BCM8704_USER_TX_ALARM_STATUS);
1518 if (err < 0)
1519 return err;
1520 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1521 BCM8704_USER_TX_ALARM_STATUS);
1522 if (err < 0)
1523 return err;
1524 tx_alarm_status = err;
1525
1526 if (analog_stat0 != 0x03fc) {
1527 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1528 pr_info("Port %u cable not connected or bad cable\n",
1529 np->port);
1530 } else if (analog_stat0 == 0x639c) {
1531 pr_info("Port %u optical module is bad or missing\n",
1532 np->port);
1533 }
1534 }
1535
1536 return 0;
1537 }
1538
1539 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1540 {
1541 struct niu_link_config *lp = &np->link_config;
1542 int err;
1543
1544 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1545 MII_BMCR);
1546 if (err < 0)
1547 return err;
1548
1549 err &= ~BMCR_LOOPBACK;
1550
1551 if (lp->loopback_mode == LOOPBACK_MAC)
1552 err |= BMCR_LOOPBACK;
1553
1554 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1555 MII_BMCR, err);
1556 if (err)
1557 return err;
1558
1559 return 0;
1560 }
1561
1562 static int xcvr_init_10g_bcm8706(struct niu *np)
1563 {
1564 int err = 0;
1565 u64 val;
1566
1567 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1568 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1569 return err;
1570
1571 val = nr64_mac(XMAC_CONFIG);
1572 val &= ~XMAC_CONFIG_LED_POLARITY;
1573 val |= XMAC_CONFIG_FORCE_LED_ON;
1574 nw64_mac(XMAC_CONFIG, val);
1575
1576 val = nr64(MIF_CONFIG);
1577 val |= MIF_CONFIG_INDIRECT_MODE;
1578 nw64(MIF_CONFIG, val);
1579
1580 err = bcm8704_reset(np);
1581 if (err)
1582 return err;
1583
1584 err = xcvr_10g_set_lb_bcm870x(np);
1585 if (err)
1586 return err;
1587
1588 err = bcm8706_init_user_dev3(np);
1589 if (err)
1590 return err;
1591
1592 err = xcvr_diag_bcm870x(np);
1593 if (err)
1594 return err;
1595
1596 return 0;
1597 }
1598
1599 static int xcvr_init_10g_bcm8704(struct niu *np)
1600 {
1601 int err;
1602
1603 err = bcm8704_reset(np);
1604 if (err)
1605 return err;
1606
1607 err = bcm8704_init_user_dev3(np);
1608 if (err)
1609 return err;
1610
1611 err = xcvr_10g_set_lb_bcm870x(np);
1612 if (err)
1613 return err;
1614
1615 err = xcvr_diag_bcm870x(np);
1616 if (err)
1617 return err;
1618
1619 return 0;
1620 }
1621
1622 static int xcvr_init_10g(struct niu *np)
1623 {
1624 int phy_id, err;
1625 u64 val;
1626
1627 val = nr64_mac(XMAC_CONFIG);
1628 val &= ~XMAC_CONFIG_LED_POLARITY;
1629 val |= XMAC_CONFIG_FORCE_LED_ON;
1630 nw64_mac(XMAC_CONFIG, val);
1631
1632 /* XXX shared resource, lock parent XXX */
1633 val = nr64(MIF_CONFIG);
1634 val |= MIF_CONFIG_INDIRECT_MODE;
1635 nw64(MIF_CONFIG, val);
1636
1637 phy_id = phy_decode(np->parent->port_phy, np->port);
1638 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1639
1640 /* handle different phy types */
1641 switch (phy_id & NIU_PHY_ID_MASK) {
1642 case NIU_PHY_ID_MRVL88X2011:
1643 err = xcvr_init_10g_mrvl88x2011(np);
1644 break;
1645
1646 default: /* bcom 8704 */
1647 err = xcvr_init_10g_bcm8704(np);
1648 break;
1649 }
1650
1651 return err;
1652 }
1653
1654 static int mii_reset(struct niu *np)
1655 {
1656 int limit, err;
1657
1658 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1659 if (err)
1660 return err;
1661
1662 limit = 1000;
1663 while (--limit >= 0) {
1664 udelay(500);
1665 err = mii_read(np, np->phy_addr, MII_BMCR);
1666 if (err < 0)
1667 return err;
1668 if (!(err & BMCR_RESET))
1669 break;
1670 }
1671 if (limit < 0) {
1672 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1673 np->port, err);
1674 return -ENODEV;
1675 }
1676
1677 return 0;
1678 }
1679
1680 static int xcvr_init_1g_rgmii(struct niu *np)
1681 {
1682 int err;
1683 u64 val;
1684 u16 bmcr, bmsr, estat;
1685
1686 val = nr64(MIF_CONFIG);
1687 val &= ~MIF_CONFIG_INDIRECT_MODE;
1688 nw64(MIF_CONFIG, val);
1689
1690 err = mii_reset(np);
1691 if (err)
1692 return err;
1693
1694 err = mii_read(np, np->phy_addr, MII_BMSR);
1695 if (err < 0)
1696 return err;
1697 bmsr = err;
1698
1699 estat = 0;
1700 if (bmsr & BMSR_ESTATEN) {
1701 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1702 if (err < 0)
1703 return err;
1704 estat = err;
1705 }
1706
1707 bmcr = 0;
1708 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1709 if (err)
1710 return err;
1711
1712 if (bmsr & BMSR_ESTATEN) {
1713 u16 ctrl1000 = 0;
1714
1715 if (estat & ESTATUS_1000_TFULL)
1716 ctrl1000 |= ADVERTISE_1000FULL;
1717 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1718 if (err)
1719 return err;
1720 }
1721
1722 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1723
1724 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1725 if (err)
1726 return err;
1727
1728 err = mii_read(np, np->phy_addr, MII_BMCR);
1729 if (err < 0)
1730 return err;
1731 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1732
1733 err = mii_read(np, np->phy_addr, MII_BMSR);
1734 if (err < 0)
1735 return err;
1736
1737 return 0;
1738 }
1739
1740 static int mii_init_common(struct niu *np)
1741 {
1742 struct niu_link_config *lp = &np->link_config;
1743 u16 bmcr, bmsr, adv, estat;
1744 int err;
1745
1746 err = mii_reset(np);
1747 if (err)
1748 return err;
1749
1750 err = mii_read(np, np->phy_addr, MII_BMSR);
1751 if (err < 0)
1752 return err;
1753 bmsr = err;
1754
1755 estat = 0;
1756 if (bmsr & BMSR_ESTATEN) {
1757 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1758 if (err < 0)
1759 return err;
1760 estat = err;
1761 }
1762
1763 bmcr = 0;
1764 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1765 if (err)
1766 return err;
1767
1768 if (lp->loopback_mode == LOOPBACK_MAC) {
1769 bmcr |= BMCR_LOOPBACK;
1770 if (lp->active_speed == SPEED_1000)
1771 bmcr |= BMCR_SPEED1000;
1772 if (lp->active_duplex == DUPLEX_FULL)
1773 bmcr |= BMCR_FULLDPLX;
1774 }
1775
1776 if (lp->loopback_mode == LOOPBACK_PHY) {
1777 u16 aux;
1778
1779 aux = (BCM5464R_AUX_CTL_EXT_LB |
1780 BCM5464R_AUX_CTL_WRITE_1);
1781 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1782 if (err)
1783 return err;
1784 }
1785
1786 if (lp->autoneg) {
1787 u16 ctrl1000;
1788
1789 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1790 if ((bmsr & BMSR_10HALF) &&
1791 (lp->advertising & ADVERTISED_10baseT_Half))
1792 adv |= ADVERTISE_10HALF;
1793 if ((bmsr & BMSR_10FULL) &&
1794 (lp->advertising & ADVERTISED_10baseT_Full))
1795 adv |= ADVERTISE_10FULL;
1796 if ((bmsr & BMSR_100HALF) &&
1797 (lp->advertising & ADVERTISED_100baseT_Half))
1798 adv |= ADVERTISE_100HALF;
1799 if ((bmsr & BMSR_100FULL) &&
1800 (lp->advertising & ADVERTISED_100baseT_Full))
1801 adv |= ADVERTISE_100FULL;
1802 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1803 if (err)
1804 return err;
1805
1806 if (likely(bmsr & BMSR_ESTATEN)) {
1807 ctrl1000 = 0;
1808 if ((estat & ESTATUS_1000_THALF) &&
1809 (lp->advertising & ADVERTISED_1000baseT_Half))
1810 ctrl1000 |= ADVERTISE_1000HALF;
1811 if ((estat & ESTATUS_1000_TFULL) &&
1812 (lp->advertising & ADVERTISED_1000baseT_Full))
1813 ctrl1000 |= ADVERTISE_1000FULL;
1814 err = mii_write(np, np->phy_addr,
1815 MII_CTRL1000, ctrl1000);
1816 if (err)
1817 return err;
1818 }
1819
1820 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1821 } else {
1822 /* !lp->autoneg */
1823 int fulldpx;
1824
1825 if (lp->duplex == DUPLEX_FULL) {
1826 bmcr |= BMCR_FULLDPLX;
1827 fulldpx = 1;
1828 } else if (lp->duplex == DUPLEX_HALF)
1829 fulldpx = 0;
1830 else
1831 return -EINVAL;
1832
1833 if (lp->speed == SPEED_1000) {
1834 /* if X-full requested while not supported, or
1835 X-half requested while not supported... */
1836 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1837 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1838 return -EINVAL;
1839 bmcr |= BMCR_SPEED1000;
1840 } else if (lp->speed == SPEED_100) {
1841 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1842 (!fulldpx && !(bmsr & BMSR_100HALF)))
1843 return -EINVAL;
1844 bmcr |= BMCR_SPEED100;
1845 } else if (lp->speed == SPEED_10) {
1846 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1847 (!fulldpx && !(bmsr & BMSR_10HALF)))
1848 return -EINVAL;
1849 } else
1850 return -EINVAL;
1851 }
1852
1853 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1854 if (err)
1855 return err;
1856
1857 #if 0
1858 err = mii_read(np, np->phy_addr, MII_BMCR);
1859 if (err < 0)
1860 return err;
1861 bmcr = err;
1862
1863 err = mii_read(np, np->phy_addr, MII_BMSR);
1864 if (err < 0)
1865 return err;
1866 bmsr = err;
1867
1868 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1869 np->port, bmcr, bmsr);
1870 #endif
1871
1872 return 0;
1873 }
1874
1875 static int xcvr_init_1g(struct niu *np)
1876 {
1877 u64 val;
1878
1879 /* XXX shared resource, lock parent XXX */
1880 val = nr64(MIF_CONFIG);
1881 val &= ~MIF_CONFIG_INDIRECT_MODE;
1882 nw64(MIF_CONFIG, val);
1883
1884 return mii_init_common(np);
1885 }
1886
1887 static int niu_xcvr_init(struct niu *np)
1888 {
1889 const struct niu_phy_ops *ops = np->phy_ops;
1890 int err;
1891
1892 err = 0;
1893 if (ops->xcvr_init)
1894 err = ops->xcvr_init(np);
1895
1896 return err;
1897 }
1898
1899 static int niu_serdes_init(struct niu *np)
1900 {
1901 const struct niu_phy_ops *ops = np->phy_ops;
1902 int err;
1903
1904 err = 0;
1905 if (ops->serdes_init)
1906 err = ops->serdes_init(np);
1907
1908 return err;
1909 }
1910
1911 static void niu_init_xif(struct niu *);
1912 static void niu_handle_led(struct niu *, int status);
1913
1914 static int niu_link_status_common(struct niu *np, int link_up)
1915 {
1916 struct niu_link_config *lp = &np->link_config;
1917 struct net_device *dev = np->dev;
1918 unsigned long flags;
1919
1920 if (!netif_carrier_ok(dev) && link_up) {
1921 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1922 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1923 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1924 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1925 "10Mbit/sec",
1926 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1927
1928 spin_lock_irqsave(&np->lock, flags);
1929 niu_init_xif(np);
1930 niu_handle_led(np, 1);
1931 spin_unlock_irqrestore(&np->lock, flags);
1932
1933 netif_carrier_on(dev);
1934 } else if (netif_carrier_ok(dev) && !link_up) {
1935 netif_warn(np, link, dev, "Link is down\n");
1936 spin_lock_irqsave(&np->lock, flags);
1937 niu_handle_led(np, 0);
1938 spin_unlock_irqrestore(&np->lock, flags);
1939 netif_carrier_off(dev);
1940 }
1941
1942 return 0;
1943 }
1944
1945 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1946 {
1947 int err, link_up, pma_status, pcs_status;
1948
1949 link_up = 0;
1950
1951 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1952 MRVL88X2011_10G_PMD_STATUS_2);
1953 if (err < 0)
1954 goto out;
1955
1956 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1957 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1958 MRVL88X2011_PMA_PMD_STATUS_1);
1959 if (err < 0)
1960 goto out;
1961
1962 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1963
1964 /* Check PMC Register : 3.0001.2 == 1: read twice */
1965 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1966 MRVL88X2011_PMA_PMD_STATUS_1);
1967 if (err < 0)
1968 goto out;
1969
1970 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1971 MRVL88X2011_PMA_PMD_STATUS_1);
1972 if (err < 0)
1973 goto out;
1974
1975 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1976
1977 /* Check XGXS Register : 4.0018.[0-3,12] */
1978 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1979 MRVL88X2011_10G_XGXS_LANE_STAT);
1980 if (err < 0)
1981 goto out;
1982
1983 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1984 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1985 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1986 0x800))
1987 link_up = (pma_status && pcs_status) ? 1 : 0;
1988
1989 np->link_config.active_speed = SPEED_10000;
1990 np->link_config.active_duplex = DUPLEX_FULL;
1991 err = 0;
1992 out:
1993 mrvl88x2011_act_led(np, (link_up ?
1994 MRVL88X2011_LED_CTL_PCS_ACT :
1995 MRVL88X2011_LED_CTL_OFF));
1996
1997 *link_up_p = link_up;
1998 return err;
1999 }
2000
2001 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
2002 {
2003 int err, link_up;
2004 link_up = 0;
2005
2006 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2007 BCM8704_PMD_RCV_SIGDET);
2008 if (err < 0 || err == 0xffff)
2009 goto out;
2010 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2011 err = 0;
2012 goto out;
2013 }
2014
2015 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2016 BCM8704_PCS_10G_R_STATUS);
2017 if (err < 0)
2018 goto out;
2019
2020 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2021 err = 0;
2022 goto out;
2023 }
2024
2025 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2026 BCM8704_PHYXS_XGXS_LANE_STAT);
2027 if (err < 0)
2028 goto out;
2029 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2030 PHYXS_XGXS_LANE_STAT_MAGIC |
2031 PHYXS_XGXS_LANE_STAT_PATTEST |
2032 PHYXS_XGXS_LANE_STAT_LANE3 |
2033 PHYXS_XGXS_LANE_STAT_LANE2 |
2034 PHYXS_XGXS_LANE_STAT_LANE1 |
2035 PHYXS_XGXS_LANE_STAT_LANE0)) {
2036 err = 0;
2037 np->link_config.active_speed = SPEED_INVALID;
2038 np->link_config.active_duplex = DUPLEX_INVALID;
2039 goto out;
2040 }
2041
2042 link_up = 1;
2043 np->link_config.active_speed = SPEED_10000;
2044 np->link_config.active_duplex = DUPLEX_FULL;
2045 err = 0;
2046
2047 out:
2048 *link_up_p = link_up;
2049 return err;
2050 }
2051
2052 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2053 {
2054 int err, link_up;
2055
2056 link_up = 0;
2057
2058 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2059 BCM8704_PMD_RCV_SIGDET);
2060 if (err < 0)
2061 goto out;
2062 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2063 err = 0;
2064 goto out;
2065 }
2066
2067 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2068 BCM8704_PCS_10G_R_STATUS);
2069 if (err < 0)
2070 goto out;
2071 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2072 err = 0;
2073 goto out;
2074 }
2075
2076 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2077 BCM8704_PHYXS_XGXS_LANE_STAT);
2078 if (err < 0)
2079 goto out;
2080
2081 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2082 PHYXS_XGXS_LANE_STAT_MAGIC |
2083 PHYXS_XGXS_LANE_STAT_LANE3 |
2084 PHYXS_XGXS_LANE_STAT_LANE2 |
2085 PHYXS_XGXS_LANE_STAT_LANE1 |
2086 PHYXS_XGXS_LANE_STAT_LANE0)) {
2087 err = 0;
2088 goto out;
2089 }
2090
2091 link_up = 1;
2092 np->link_config.active_speed = SPEED_10000;
2093 np->link_config.active_duplex = DUPLEX_FULL;
2094 err = 0;
2095
2096 out:
2097 *link_up_p = link_up;
2098 return err;
2099 }
2100
2101 static int link_status_10g(struct niu *np, int *link_up_p)
2102 {
2103 unsigned long flags;
2104 int err = -EINVAL;
2105
2106 spin_lock_irqsave(&np->lock, flags);
2107
2108 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2109 int phy_id;
2110
2111 phy_id = phy_decode(np->parent->port_phy, np->port);
2112 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2113
2114 /* handle different phy types */
2115 switch (phy_id & NIU_PHY_ID_MASK) {
2116 case NIU_PHY_ID_MRVL88X2011:
2117 err = link_status_10g_mrvl(np, link_up_p);
2118 break;
2119
2120 default: /* bcom 8704 */
2121 err = link_status_10g_bcom(np, link_up_p);
2122 break;
2123 }
2124 }
2125
2126 spin_unlock_irqrestore(&np->lock, flags);
2127
2128 return err;
2129 }
2130
2131 static int niu_10g_phy_present(struct niu *np)
2132 {
2133 u64 sig, mask, val;
2134
2135 sig = nr64(ESR_INT_SIGNALS);
2136 switch (np->port) {
2137 case 0:
2138 mask = ESR_INT_SIGNALS_P0_BITS;
2139 val = (ESR_INT_SRDY0_P0 |
2140 ESR_INT_DET0_P0 |
2141 ESR_INT_XSRDY_P0 |
2142 ESR_INT_XDP_P0_CH3 |
2143 ESR_INT_XDP_P0_CH2 |
2144 ESR_INT_XDP_P0_CH1 |
2145 ESR_INT_XDP_P0_CH0);
2146 break;
2147
2148 case 1:
2149 mask = ESR_INT_SIGNALS_P1_BITS;
2150 val = (ESR_INT_SRDY0_P1 |
2151 ESR_INT_DET0_P1 |
2152 ESR_INT_XSRDY_P1 |
2153 ESR_INT_XDP_P1_CH3 |
2154 ESR_INT_XDP_P1_CH2 |
2155 ESR_INT_XDP_P1_CH1 |
2156 ESR_INT_XDP_P1_CH0);
2157 break;
2158
2159 default:
2160 return 0;
2161 }
2162
2163 if ((sig & mask) != val)
2164 return 0;
2165 return 1;
2166 }
2167
2168 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2169 {
2170 unsigned long flags;
2171 int err = 0;
2172 int phy_present;
2173 int phy_present_prev;
2174
2175 spin_lock_irqsave(&np->lock, flags);
2176
2177 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2178 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2179 1 : 0;
2180 phy_present = niu_10g_phy_present(np);
2181 if (phy_present != phy_present_prev) {
2182 /* state change */
2183 if (phy_present) {
2184 /* A NEM was just plugged in */
2185 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2186 if (np->phy_ops->xcvr_init)
2187 err = np->phy_ops->xcvr_init(np);
2188 if (err) {
2189 err = mdio_read(np, np->phy_addr,
2190 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2191 if (err == 0xffff) {
2192 /* No mdio, back-to-back XAUI */
2193 goto out;
2194 }
2195 /* debounce */
2196 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2197 }
2198 } else {
2199 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2200 *link_up_p = 0;
2201 netif_warn(np, link, np->dev,
2202 "Hotplug PHY Removed\n");
2203 }
2204 }
2205 out:
2206 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2207 err = link_status_10g_bcm8706(np, link_up_p);
2208 if (err == 0xffff) {
2209 /* No mdio, back-to-back XAUI: it is C10NEM */
2210 *link_up_p = 1;
2211 np->link_config.active_speed = SPEED_10000;
2212 np->link_config.active_duplex = DUPLEX_FULL;
2213 }
2214 }
2215 }
2216
2217 spin_unlock_irqrestore(&np->lock, flags);
2218
2219 return 0;
2220 }
2221
2222 static int niu_link_status(struct niu *np, int *link_up_p)
2223 {
2224 const struct niu_phy_ops *ops = np->phy_ops;
2225 int err;
2226
2227 err = 0;
2228 if (ops->link_status)
2229 err = ops->link_status(np, link_up_p);
2230
2231 return err;
2232 }
2233
2234 static void niu_timer(unsigned long __opaque)
2235 {
2236 struct niu *np = (struct niu *) __opaque;
2237 unsigned long off;
2238 int err, link_up;
2239
2240 err = niu_link_status(np, &link_up);
2241 if (!err)
2242 niu_link_status_common(np, link_up);
2243
2244 if (netif_carrier_ok(np->dev))
2245 off = 5 * HZ;
2246 else
2247 off = 1 * HZ;
2248 np->timer.expires = jiffies + off;
2249
2250 add_timer(&np->timer);
2251 }
2252
2253 static const struct niu_phy_ops phy_ops_10g_serdes = {
2254 .serdes_init = serdes_init_10g_serdes,
2255 .link_status = link_status_10g_serdes,
2256 };
2257
2258 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2259 .serdes_init = serdes_init_niu_10g_serdes,
2260 .link_status = link_status_10g_serdes,
2261 };
2262
2263 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2264 .serdes_init = serdes_init_niu_1g_serdes,
2265 .link_status = link_status_1g_serdes,
2266 };
2267
2268 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2269 .xcvr_init = xcvr_init_1g_rgmii,
2270 .link_status = link_status_1g_rgmii,
2271 };
2272
2273 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2274 .serdes_init = serdes_init_niu_10g_fiber,
2275 .xcvr_init = xcvr_init_10g,
2276 .link_status = link_status_10g,
2277 };
2278
2279 static const struct niu_phy_ops phy_ops_10g_fiber = {
2280 .serdes_init = serdes_init_10g,
2281 .xcvr_init = xcvr_init_10g,
2282 .link_status = link_status_10g,
2283 };
2284
2285 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2286 .serdes_init = serdes_init_10g,
2287 .xcvr_init = xcvr_init_10g_bcm8706,
2288 .link_status = link_status_10g_hotplug,
2289 };
2290
2291 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2292 .serdes_init = serdes_init_niu_10g_fiber,
2293 .xcvr_init = xcvr_init_10g_bcm8706,
2294 .link_status = link_status_10g_hotplug,
2295 };
2296
2297 static const struct niu_phy_ops phy_ops_10g_copper = {
2298 .serdes_init = serdes_init_10g,
2299 .link_status = link_status_10g, /* XXX */
2300 };
2301
2302 static const struct niu_phy_ops phy_ops_1g_fiber = {
2303 .serdes_init = serdes_init_1g,
2304 .xcvr_init = xcvr_init_1g,
2305 .link_status = link_status_1g,
2306 };
2307
2308 static const struct niu_phy_ops phy_ops_1g_copper = {
2309 .xcvr_init = xcvr_init_1g,
2310 .link_status = link_status_1g,
2311 };
2312
2313 struct niu_phy_template {
2314 const struct niu_phy_ops *ops;
2315 u32 phy_addr_base;
2316 };
2317
2318 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2319 .ops = &phy_ops_10g_fiber_niu,
2320 .phy_addr_base = 16,
2321 };
2322
2323 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2324 .ops = &phy_ops_10g_serdes_niu,
2325 .phy_addr_base = 0,
2326 };
2327
2328 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2329 .ops = &phy_ops_1g_serdes_niu,
2330 .phy_addr_base = 0,
2331 };
2332
2333 static const struct niu_phy_template phy_template_10g_fiber = {
2334 .ops = &phy_ops_10g_fiber,
2335 .phy_addr_base = 8,
2336 };
2337
2338 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2339 .ops = &phy_ops_10g_fiber_hotplug,
2340 .phy_addr_base = 8,
2341 };
2342
2343 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2344 .ops = &phy_ops_niu_10g_hotplug,
2345 .phy_addr_base = 8,
2346 };
2347
2348 static const struct niu_phy_template phy_template_10g_copper = {
2349 .ops = &phy_ops_10g_copper,
2350 .phy_addr_base = 10,
2351 };
2352
2353 static const struct niu_phy_template phy_template_1g_fiber = {
2354 .ops = &phy_ops_1g_fiber,
2355 .phy_addr_base = 0,
2356 };
2357
2358 static const struct niu_phy_template phy_template_1g_copper = {
2359 .ops = &phy_ops_1g_copper,
2360 .phy_addr_base = 0,
2361 };
2362
2363 static const struct niu_phy_template phy_template_1g_rgmii = {
2364 .ops = &phy_ops_1g_rgmii,
2365 .phy_addr_base = 0,
2366 };
2367
2368 static const struct niu_phy_template phy_template_10g_serdes = {
2369 .ops = &phy_ops_10g_serdes,
2370 .phy_addr_base = 0,
2371 };
2372
2373 static int niu_atca_port_num[4] = {
2374 0, 0, 11, 10
2375 };
2376
2377 static int serdes_init_10g_serdes(struct niu *np)
2378 {
2379 struct niu_link_config *lp = &np->link_config;
2380 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2381 u64 ctrl_val, test_cfg_val, sig, mask, val;
2382
2383 switch (np->port) {
2384 case 0:
2385 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2386 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2387 pll_cfg = ENET_SERDES_0_PLL_CFG;
2388 break;
2389 case 1:
2390 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2391 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2392 pll_cfg = ENET_SERDES_1_PLL_CFG;
2393 break;
2394
2395 default:
2396 return -EINVAL;
2397 }
2398 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2399 ENET_SERDES_CTRL_SDET_1 |
2400 ENET_SERDES_CTRL_SDET_2 |
2401 ENET_SERDES_CTRL_SDET_3 |
2402 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2403 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2404 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2405 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2406 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2407 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2408 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2409 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2410 test_cfg_val = 0;
2411
2412 if (lp->loopback_mode == LOOPBACK_PHY) {
2413 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2414 ENET_SERDES_TEST_MD_0_SHIFT) |
2415 (ENET_TEST_MD_PAD_LOOPBACK <<
2416 ENET_SERDES_TEST_MD_1_SHIFT) |
2417 (ENET_TEST_MD_PAD_LOOPBACK <<
2418 ENET_SERDES_TEST_MD_2_SHIFT) |
2419 (ENET_TEST_MD_PAD_LOOPBACK <<
2420 ENET_SERDES_TEST_MD_3_SHIFT));
2421 }
2422
2423 esr_reset(np);
2424 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2425 nw64(ctrl_reg, ctrl_val);
2426 nw64(test_cfg_reg, test_cfg_val);
2427
2428 /* Initialize all 4 lanes of the SERDES. */
2429 for (i = 0; i < 4; i++) {
2430 u32 rxtx_ctrl, glue0;
2431 int err;
2432
2433 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2434 if (err)
2435 return err;
2436 err = esr_read_glue0(np, i, &glue0);
2437 if (err)
2438 return err;
2439
2440 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2441 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2442 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2443
2444 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2445 ESR_GLUE_CTRL0_THCNT |
2446 ESR_GLUE_CTRL0_BLTIME);
2447 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2448 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2449 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2450 (BLTIME_300_CYCLES <<
2451 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2452
2453 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2454 if (err)
2455 return err;
2456 err = esr_write_glue0(np, i, glue0);
2457 if (err)
2458 return err;
2459 }
2460
2461
2462 sig = nr64(ESR_INT_SIGNALS);
2463 switch (np->port) {
2464 case 0:
2465 mask = ESR_INT_SIGNALS_P0_BITS;
2466 val = (ESR_INT_SRDY0_P0 |
2467 ESR_INT_DET0_P0 |
2468 ESR_INT_XSRDY_P0 |
2469 ESR_INT_XDP_P0_CH3 |
2470 ESR_INT_XDP_P0_CH2 |
2471 ESR_INT_XDP_P0_CH1 |
2472 ESR_INT_XDP_P0_CH0);
2473 break;
2474
2475 case 1:
2476 mask = ESR_INT_SIGNALS_P1_BITS;
2477 val = (ESR_INT_SRDY0_P1 |
2478 ESR_INT_DET0_P1 |
2479 ESR_INT_XSRDY_P1 |
2480 ESR_INT_XDP_P1_CH3 |
2481 ESR_INT_XDP_P1_CH2 |
2482 ESR_INT_XDP_P1_CH1 |
2483 ESR_INT_XDP_P1_CH0);
2484 break;
2485
2486 default:
2487 return -EINVAL;
2488 }
2489
2490 if ((sig & mask) != val) {
2491 int err;
2492 err = serdes_init_1g_serdes(np);
2493 if (!err) {
2494 np->flags &= ~NIU_FLAGS_10G;
2495 np->mac_xcvr = MAC_XCVR_PCS;
2496 } else {
2497 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2498 np->port);
2499 return -ENODEV;
2500 }
2501 }
2502
2503 return 0;
2504 }
2505
2506 static int niu_determine_phy_disposition(struct niu *np)
2507 {
2508 struct niu_parent *parent = np->parent;
2509 u8 plat_type = parent->plat_type;
2510 const struct niu_phy_template *tp;
2511 u32 phy_addr_off = 0;
2512
2513 if (plat_type == PLAT_TYPE_NIU) {
2514 switch (np->flags &
2515 (NIU_FLAGS_10G |
2516 NIU_FLAGS_FIBER |
2517 NIU_FLAGS_XCVR_SERDES)) {
2518 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2519 /* 10G Serdes */
2520 tp = &phy_template_niu_10g_serdes;
2521 break;
2522 case NIU_FLAGS_XCVR_SERDES:
2523 /* 1G Serdes */
2524 tp = &phy_template_niu_1g_serdes;
2525 break;
2526 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2527 /* 10G Fiber */
2528 default:
2529 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2530 tp = &phy_template_niu_10g_hotplug;
2531 if (np->port == 0)
2532 phy_addr_off = 8;
2533 if (np->port == 1)
2534 phy_addr_off = 12;
2535 } else {
2536 tp = &phy_template_niu_10g_fiber;
2537 phy_addr_off += np->port;
2538 }
2539 break;
2540 }
2541 } else {
2542 switch (np->flags &
2543 (NIU_FLAGS_10G |
2544 NIU_FLAGS_FIBER |
2545 NIU_FLAGS_XCVR_SERDES)) {
2546 case 0:
2547 /* 1G copper */
2548 tp = &phy_template_1g_copper;
2549 if (plat_type == PLAT_TYPE_VF_P0)
2550 phy_addr_off = 10;
2551 else if (plat_type == PLAT_TYPE_VF_P1)
2552 phy_addr_off = 26;
2553
2554 phy_addr_off += (np->port ^ 0x3);
2555 break;
2556
2557 case NIU_FLAGS_10G:
2558 /* 10G copper */
2559 tp = &phy_template_10g_copper;
2560 break;
2561
2562 case NIU_FLAGS_FIBER:
2563 /* 1G fiber */
2564 tp = &phy_template_1g_fiber;
2565 break;
2566
2567 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2568 /* 10G fiber */
2569 tp = &phy_template_10g_fiber;
2570 if (plat_type == PLAT_TYPE_VF_P0 ||
2571 plat_type == PLAT_TYPE_VF_P1)
2572 phy_addr_off = 8;
2573 phy_addr_off += np->port;
2574 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2575 tp = &phy_template_10g_fiber_hotplug;
2576 if (np->port == 0)
2577 phy_addr_off = 8;
2578 if (np->port == 1)
2579 phy_addr_off = 12;
2580 }
2581 break;
2582
2583 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2584 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2585 case NIU_FLAGS_XCVR_SERDES:
2586 switch(np->port) {
2587 case 0:
2588 case 1:
2589 tp = &phy_template_10g_serdes;
2590 break;
2591 case 2:
2592 case 3:
2593 tp = &phy_template_1g_rgmii;
2594 break;
2595 default:
2596 return -EINVAL;
2597 break;
2598 }
2599 phy_addr_off = niu_atca_port_num[np->port];
2600 break;
2601
2602 default:
2603 return -EINVAL;
2604 }
2605 }
2606
2607 np->phy_ops = tp->ops;
2608 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2609
2610 return 0;
2611 }
2612
2613 static int niu_init_link(struct niu *np)
2614 {
2615 struct niu_parent *parent = np->parent;
2616 int err, ignore;
2617
2618 if (parent->plat_type == PLAT_TYPE_NIU) {
2619 err = niu_xcvr_init(np);
2620 if (err)
2621 return err;
2622 msleep(200);
2623 }
2624 err = niu_serdes_init(np);
2625 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2626 return err;
2627 msleep(200);
2628 err = niu_xcvr_init(np);
2629 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2630 niu_link_status(np, &ignore);
2631 return 0;
2632 }
2633
2634 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2635 {
2636 u16 reg0 = addr[4] << 8 | addr[5];
2637 u16 reg1 = addr[2] << 8 | addr[3];
2638 u16 reg2 = addr[0] << 8 | addr[1];
2639
2640 if (np->flags & NIU_FLAGS_XMAC) {
2641 nw64_mac(XMAC_ADDR0, reg0);
2642 nw64_mac(XMAC_ADDR1, reg1);
2643 nw64_mac(XMAC_ADDR2, reg2);
2644 } else {
2645 nw64_mac(BMAC_ADDR0, reg0);
2646 nw64_mac(BMAC_ADDR1, reg1);
2647 nw64_mac(BMAC_ADDR2, reg2);
2648 }
2649 }
2650
2651 static int niu_num_alt_addr(struct niu *np)
2652 {
2653 if (np->flags & NIU_FLAGS_XMAC)
2654 return XMAC_NUM_ALT_ADDR;
2655 else
2656 return BMAC_NUM_ALT_ADDR;
2657 }
2658
2659 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2660 {
2661 u16 reg0 = addr[4] << 8 | addr[5];
2662 u16 reg1 = addr[2] << 8 | addr[3];
2663 u16 reg2 = addr[0] << 8 | addr[1];
2664
2665 if (index >= niu_num_alt_addr(np))
2666 return -EINVAL;
2667
2668 if (np->flags & NIU_FLAGS_XMAC) {
2669 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2670 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2671 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2672 } else {
2673 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2674 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2675 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2676 }
2677
2678 return 0;
2679 }
2680
2681 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2682 {
2683 unsigned long reg;
2684 u64 val, mask;
2685
2686 if (index >= niu_num_alt_addr(np))
2687 return -EINVAL;
2688
2689 if (np->flags & NIU_FLAGS_XMAC) {
2690 reg = XMAC_ADDR_CMPEN;
2691 mask = 1 << index;
2692 } else {
2693 reg = BMAC_ADDR_CMPEN;
2694 mask = 1 << (index + 1);
2695 }
2696
2697 val = nr64_mac(reg);
2698 if (on)
2699 val |= mask;
2700 else
2701 val &= ~mask;
2702 nw64_mac(reg, val);
2703
2704 return 0;
2705 }
2706
2707 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2708 int num, int mac_pref)
2709 {
2710 u64 val = nr64_mac(reg);
2711 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2712 val |= num;
2713 if (mac_pref)
2714 val |= HOST_INFO_MPR;
2715 nw64_mac(reg, val);
2716 }
2717
2718 static int __set_rdc_table_num(struct niu *np,
2719 int xmac_index, int bmac_index,
2720 int rdc_table_num, int mac_pref)
2721 {
2722 unsigned long reg;
2723
2724 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2725 return -EINVAL;
2726 if (np->flags & NIU_FLAGS_XMAC)
2727 reg = XMAC_HOST_INFO(xmac_index);
2728 else
2729 reg = BMAC_HOST_INFO(bmac_index);
2730 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2731 return 0;
2732 }
2733
2734 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2735 int mac_pref)
2736 {
2737 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2738 }
2739
2740 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2741 int mac_pref)
2742 {
2743 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2744 }
2745
2746 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2747 int table_num, int mac_pref)
2748 {
2749 if (idx >= niu_num_alt_addr(np))
2750 return -EINVAL;
2751 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2752 }
2753
2754 static u64 vlan_entry_set_parity(u64 reg_val)
2755 {
2756 u64 port01_mask;
2757 u64 port23_mask;
2758
2759 port01_mask = 0x00ff;
2760 port23_mask = 0xff00;
2761
2762 if (hweight64(reg_val & port01_mask) & 1)
2763 reg_val |= ENET_VLAN_TBL_PARITY0;
2764 else
2765 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2766
2767 if (hweight64(reg_val & port23_mask) & 1)
2768 reg_val |= ENET_VLAN_TBL_PARITY1;
2769 else
2770 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2771
2772 return reg_val;
2773 }
2774
2775 static void vlan_tbl_write(struct niu *np, unsigned long index,
2776 int port, int vpr, int rdc_table)
2777 {
2778 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2779
2780 reg_val &= ~((ENET_VLAN_TBL_VPR |
2781 ENET_VLAN_TBL_VLANRDCTBLN) <<
2782 ENET_VLAN_TBL_SHIFT(port));
2783 if (vpr)
2784 reg_val |= (ENET_VLAN_TBL_VPR <<
2785 ENET_VLAN_TBL_SHIFT(port));
2786 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2787
2788 reg_val = vlan_entry_set_parity(reg_val);
2789
2790 nw64(ENET_VLAN_TBL(index), reg_val);
2791 }
2792
2793 static void vlan_tbl_clear(struct niu *np)
2794 {
2795 int i;
2796
2797 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2798 nw64(ENET_VLAN_TBL(i), 0);
2799 }
2800
2801 static int tcam_wait_bit(struct niu *np, u64 bit)
2802 {
2803 int limit = 1000;
2804
2805 while (--limit > 0) {
2806 if (nr64(TCAM_CTL) & bit)
2807 break;
2808 udelay(1);
2809 }
2810 if (limit <= 0)
2811 return -ENODEV;
2812
2813 return 0;
2814 }
2815
2816 static int tcam_flush(struct niu *np, int index)
2817 {
2818 nw64(TCAM_KEY_0, 0x00);
2819 nw64(TCAM_KEY_MASK_0, 0xff);
2820 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2821
2822 return tcam_wait_bit(np, TCAM_CTL_STAT);
2823 }
2824
2825 #if 0
2826 static int tcam_read(struct niu *np, int index,
2827 u64 *key, u64 *mask)
2828 {
2829 int err;
2830
2831 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2832 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2833 if (!err) {
2834 key[0] = nr64(TCAM_KEY_0);
2835 key[1] = nr64(TCAM_KEY_1);
2836 key[2] = nr64(TCAM_KEY_2);
2837 key[3] = nr64(TCAM_KEY_3);
2838 mask[0] = nr64(TCAM_KEY_MASK_0);
2839 mask[1] = nr64(TCAM_KEY_MASK_1);
2840 mask[2] = nr64(TCAM_KEY_MASK_2);
2841 mask[3] = nr64(TCAM_KEY_MASK_3);
2842 }
2843 return err;
2844 }
2845 #endif
2846
2847 static int tcam_write(struct niu *np, int index,
2848 u64 *key, u64 *mask)
2849 {
2850 nw64(TCAM_KEY_0, key[0]);
2851 nw64(TCAM_KEY_1, key[1]);
2852 nw64(TCAM_KEY_2, key[2]);
2853 nw64(TCAM_KEY_3, key[3]);
2854 nw64(TCAM_KEY_MASK_0, mask[0]);
2855 nw64(TCAM_KEY_MASK_1, mask[1]);
2856 nw64(TCAM_KEY_MASK_2, mask[2]);
2857 nw64(TCAM_KEY_MASK_3, mask[3]);
2858 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2859
2860 return tcam_wait_bit(np, TCAM_CTL_STAT);
2861 }
2862
2863 #if 0
2864 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2865 {
2866 int err;
2867
2868 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2869 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2870 if (!err)
2871 *data = nr64(TCAM_KEY_1);
2872
2873 return err;
2874 }
2875 #endif
2876
2877 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2878 {
2879 nw64(TCAM_KEY_1, assoc_data);
2880 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2881
2882 return tcam_wait_bit(np, TCAM_CTL_STAT);
2883 }
2884
2885 static void tcam_enable(struct niu *np, int on)
2886 {
2887 u64 val = nr64(FFLP_CFG_1);
2888
2889 if (on)
2890 val &= ~FFLP_CFG_1_TCAM_DIS;
2891 else
2892 val |= FFLP_CFG_1_TCAM_DIS;
2893 nw64(FFLP_CFG_1, val);
2894 }
2895
2896 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2897 {
2898 u64 val = nr64(FFLP_CFG_1);
2899
2900 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2901 FFLP_CFG_1_CAMLAT |
2902 FFLP_CFG_1_CAMRATIO);
2903 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2904 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2905 nw64(FFLP_CFG_1, val);
2906
2907 val = nr64(FFLP_CFG_1);
2908 val |= FFLP_CFG_1_FFLPINITDONE;
2909 nw64(FFLP_CFG_1, val);
2910 }
2911
2912 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2913 int on)
2914 {
2915 unsigned long reg;
2916 u64 val;
2917
2918 if (class < CLASS_CODE_ETHERTYPE1 ||
2919 class > CLASS_CODE_ETHERTYPE2)
2920 return -EINVAL;
2921
2922 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2923 val = nr64(reg);
2924 if (on)
2925 val |= L2_CLS_VLD;
2926 else
2927 val &= ~L2_CLS_VLD;
2928 nw64(reg, val);
2929
2930 return 0;
2931 }
2932
2933 #if 0
2934 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2935 u64 ether_type)
2936 {
2937 unsigned long reg;
2938 u64 val;
2939
2940 if (class < CLASS_CODE_ETHERTYPE1 ||
2941 class > CLASS_CODE_ETHERTYPE2 ||
2942 (ether_type & ~(u64)0xffff) != 0)
2943 return -EINVAL;
2944
2945 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2946 val = nr64(reg);
2947 val &= ~L2_CLS_ETYPE;
2948 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2949 nw64(reg, val);
2950
2951 return 0;
2952 }
2953 #endif
2954
2955 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2956 int on)
2957 {
2958 unsigned long reg;
2959 u64 val;
2960
2961 if (class < CLASS_CODE_USER_PROG1 ||
2962 class > CLASS_CODE_USER_PROG4)
2963 return -EINVAL;
2964
2965 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2966 val = nr64(reg);
2967 if (on)
2968 val |= L3_CLS_VALID;
2969 else
2970 val &= ~L3_CLS_VALID;
2971 nw64(reg, val);
2972
2973 return 0;
2974 }
2975
2976 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2977 int ipv6, u64 protocol_id,
2978 u64 tos_mask, u64 tos_val)
2979 {
2980 unsigned long reg;
2981 u64 val;
2982
2983 if (class < CLASS_CODE_USER_PROG1 ||
2984 class > CLASS_CODE_USER_PROG4 ||
2985 (protocol_id & ~(u64)0xff) != 0 ||
2986 (tos_mask & ~(u64)0xff) != 0 ||
2987 (tos_val & ~(u64)0xff) != 0)
2988 return -EINVAL;
2989
2990 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2991 val = nr64(reg);
2992 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2993 L3_CLS_TOSMASK | L3_CLS_TOS);
2994 if (ipv6)
2995 val |= L3_CLS_IPVER;
2996 val |= (protocol_id << L3_CLS_PID_SHIFT);
2997 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2998 val |= (tos_val << L3_CLS_TOS_SHIFT);
2999 nw64(reg, val);
3000
3001 return 0;
3002 }
3003
3004 static int tcam_early_init(struct niu *np)
3005 {
3006 unsigned long i;
3007 int err;
3008
3009 tcam_enable(np, 0);
3010 tcam_set_lat_and_ratio(np,
3011 DEFAULT_TCAM_LATENCY,
3012 DEFAULT_TCAM_ACCESS_RATIO);
3013 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3014 err = tcam_user_eth_class_enable(np, i, 0);
3015 if (err)
3016 return err;
3017 }
3018 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3019 err = tcam_user_ip_class_enable(np, i, 0);
3020 if (err)
3021 return err;
3022 }
3023
3024 return 0;
3025 }
3026
3027 static int tcam_flush_all(struct niu *np)
3028 {
3029 unsigned long i;
3030
3031 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3032 int err = tcam_flush(np, i);
3033 if (err)
3034 return err;
3035 }
3036 return 0;
3037 }
3038
3039 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3040 {
3041 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3042 }
3043
3044 #if 0
3045 static int hash_read(struct niu *np, unsigned long partition,
3046 unsigned long index, unsigned long num_entries,
3047 u64 *data)
3048 {
3049 u64 val = hash_addr_regval(index, num_entries);
3050 unsigned long i;
3051
3052 if (partition >= FCRAM_NUM_PARTITIONS ||
3053 index + num_entries > FCRAM_SIZE)
3054 return -EINVAL;
3055
3056 nw64(HASH_TBL_ADDR(partition), val);
3057 for (i = 0; i < num_entries; i++)
3058 data[i] = nr64(HASH_TBL_DATA(partition));
3059
3060 return 0;
3061 }
3062 #endif
3063
3064 static int hash_write(struct niu *np, unsigned long partition,
3065 unsigned long index, unsigned long num_entries,
3066 u64 *data)
3067 {
3068 u64 val = hash_addr_regval(index, num_entries);
3069 unsigned long i;
3070
3071 if (partition >= FCRAM_NUM_PARTITIONS ||
3072 index + (num_entries * 8) > FCRAM_SIZE)
3073 return -EINVAL;
3074
3075 nw64(HASH_TBL_ADDR(partition), val);
3076 for (i = 0; i < num_entries; i++)
3077 nw64(HASH_TBL_DATA(partition), data[i]);
3078
3079 return 0;
3080 }
3081
3082 static void fflp_reset(struct niu *np)
3083 {
3084 u64 val;
3085
3086 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3087 udelay(10);
3088 nw64(FFLP_CFG_1, 0);
3089
3090 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3091 nw64(FFLP_CFG_1, val);
3092 }
3093
3094 static void fflp_set_timings(struct niu *np)
3095 {
3096 u64 val = nr64(FFLP_CFG_1);
3097
3098 val &= ~FFLP_CFG_1_FFLPINITDONE;
3099 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3100 nw64(FFLP_CFG_1, val);
3101
3102 val = nr64(FFLP_CFG_1);
3103 val |= FFLP_CFG_1_FFLPINITDONE;
3104 nw64(FFLP_CFG_1, val);
3105
3106 val = nr64(FCRAM_REF_TMR);
3107 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3108 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3109 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3110 nw64(FCRAM_REF_TMR, val);
3111 }
3112
3113 static int fflp_set_partition(struct niu *np, u64 partition,
3114 u64 mask, u64 base, int enable)
3115 {
3116 unsigned long reg;
3117 u64 val;
3118
3119 if (partition >= FCRAM_NUM_PARTITIONS ||
3120 (mask & ~(u64)0x1f) != 0 ||
3121 (base & ~(u64)0x1f) != 0)
3122 return -EINVAL;
3123
3124 reg = FLW_PRT_SEL(partition);
3125
3126 val = nr64(reg);
3127 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3128 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3129 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3130 if (enable)
3131 val |= FLW_PRT_SEL_EXT;
3132 nw64(reg, val);
3133
3134 return 0;
3135 }
3136
3137 static int fflp_disable_all_partitions(struct niu *np)
3138 {
3139 unsigned long i;
3140
3141 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3142 int err = fflp_set_partition(np, 0, 0, 0, 0);
3143 if (err)
3144 return err;
3145 }
3146 return 0;
3147 }
3148
3149 static void fflp_llcsnap_enable(struct niu *np, int on)
3150 {
3151 u64 val = nr64(FFLP_CFG_1);
3152
3153 if (on)
3154 val |= FFLP_CFG_1_LLCSNAP;
3155 else
3156 val &= ~FFLP_CFG_1_LLCSNAP;
3157 nw64(FFLP_CFG_1, val);
3158 }
3159
3160 static void fflp_errors_enable(struct niu *np, int on)
3161 {
3162 u64 val = nr64(FFLP_CFG_1);
3163
3164 if (on)
3165 val &= ~FFLP_CFG_1_ERRORDIS;
3166 else
3167 val |= FFLP_CFG_1_ERRORDIS;
3168 nw64(FFLP_CFG_1, val);
3169 }
3170
3171 static int fflp_hash_clear(struct niu *np)
3172 {
3173 struct fcram_hash_ipv4 ent;
3174 unsigned long i;
3175
3176 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3177 memset(&ent, 0, sizeof(ent));
3178 ent.header = HASH_HEADER_EXT;
3179
3180 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3181 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3182 if (err)
3183 return err;
3184 }
3185 return 0;
3186 }
3187
3188 static int fflp_early_init(struct niu *np)
3189 {
3190 struct niu_parent *parent;
3191 unsigned long flags;
3192 int err;
3193
3194 niu_lock_parent(np, flags);
3195
3196 parent = np->parent;
3197 err = 0;
3198 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3199 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3200 fflp_reset(np);
3201 fflp_set_timings(np);
3202 err = fflp_disable_all_partitions(np);
3203 if (err) {
3204 netif_printk(np, probe, KERN_DEBUG, np->dev,
3205 "fflp_disable_all_partitions failed, err=%d\n",
3206 err);
3207 goto out;
3208 }
3209 }
3210
3211 err = tcam_early_init(np);
3212 if (err) {
3213 netif_printk(np, probe, KERN_DEBUG, np->dev,
3214 "tcam_early_init failed, err=%d\n", err);
3215 goto out;
3216 }
3217 fflp_llcsnap_enable(np, 1);
3218 fflp_errors_enable(np, 0);
3219 nw64(H1POLY, 0);
3220 nw64(H2POLY, 0);
3221
3222 err = tcam_flush_all(np);
3223 if (err) {
3224 netif_printk(np, probe, KERN_DEBUG, np->dev,
3225 "tcam_flush_all failed, err=%d\n", err);
3226 goto out;
3227 }
3228 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3229 err = fflp_hash_clear(np);
3230 if (err) {
3231 netif_printk(np, probe, KERN_DEBUG, np->dev,
3232 "fflp_hash_clear failed, err=%d\n",
3233 err);
3234 goto out;
3235 }
3236 }
3237
3238 vlan_tbl_clear(np);
3239
3240 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3241 }
3242 out:
3243 niu_unlock_parent(np, flags);
3244 return err;
3245 }
3246
3247 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3248 {
3249 if (class_code < CLASS_CODE_USER_PROG1 ||
3250 class_code > CLASS_CODE_SCTP_IPV6)
3251 return -EINVAL;
3252
3253 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3254 return 0;
3255 }
3256
3257 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3258 {
3259 if (class_code < CLASS_CODE_USER_PROG1 ||
3260 class_code > CLASS_CODE_SCTP_IPV6)
3261 return -EINVAL;
3262
3263 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3264 return 0;
3265 }
3266
3267 /* Entries for the ports are interleaved in the TCAM */
3268 static u16 tcam_get_index(struct niu *np, u16 idx)
3269 {
3270 /* One entry reserved for IP fragment rule */
3271 if (idx >= (np->clas.tcam_sz - 1))
3272 idx = 0;
3273 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3274 }
3275
3276 static u16 tcam_get_size(struct niu *np)
3277 {
3278 /* One entry reserved for IP fragment rule */
3279 return np->clas.tcam_sz - 1;
3280 }
3281
3282 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3283 {
3284 /* One entry reserved for IP fragment rule */
3285 return np->clas.tcam_valid_entries - 1;
3286 }
3287
3288 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3289 u32 offset, u32 size)
3290 {
3291 int i = skb_shinfo(skb)->nr_frags;
3292 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3293
3294 frag->page = page;
3295 frag->page_offset = offset;
3296 frag->size = size;
3297
3298 skb->len += size;
3299 skb->data_len += size;
3300 skb->truesize += size;
3301
3302 skb_shinfo(skb)->nr_frags = i + 1;
3303 }
3304
3305 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3306 {
3307 a >>= PAGE_SHIFT;
3308 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3309
3310 return a & (MAX_RBR_RING_SIZE - 1);
3311 }
3312
3313 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3314 struct page ***link)
3315 {
3316 unsigned int h = niu_hash_rxaddr(rp, addr);
3317 struct page *p, **pp;
3318
3319 addr &= PAGE_MASK;
3320 pp = &rp->rxhash[h];
3321 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3322 if (p->index == addr) {
3323 *link = pp;
3324 goto found;
3325 }
3326 }
3327 BUG();
3328
3329 found:
3330 return p;
3331 }
3332
3333 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3334 {
3335 unsigned int h = niu_hash_rxaddr(rp, base);
3336
3337 page->index = base;
3338 page->mapping = (struct address_space *) rp->rxhash[h];
3339 rp->rxhash[h] = page;
3340 }
3341
3342 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3343 gfp_t mask, int start_index)
3344 {
3345 struct page *page;
3346 u64 addr;
3347 int i;
3348
3349 page = alloc_page(mask);
3350 if (!page)
3351 return -ENOMEM;
3352
3353 addr = np->ops->map_page(np->device, page, 0,
3354 PAGE_SIZE, DMA_FROM_DEVICE);
3355
3356 niu_hash_page(rp, page, addr);
3357 if (rp->rbr_blocks_per_page > 1)
3358 atomic_add(rp->rbr_blocks_per_page - 1,
3359 &compound_head(page)->_count);
3360
3361 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3362 __le32 *rbr = &rp->rbr[start_index + i];
3363
3364 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3365 addr += rp->rbr_block_size;
3366 }
3367
3368 return 0;
3369 }
3370
3371 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3372 {
3373 int index = rp->rbr_index;
3374
3375 rp->rbr_pending++;
3376 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3377 int err = niu_rbr_add_page(np, rp, mask, index);
3378
3379 if (unlikely(err)) {
3380 rp->rbr_pending--;
3381 return;
3382 }
3383
3384 rp->rbr_index += rp->rbr_blocks_per_page;
3385 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3386 if (rp->rbr_index == rp->rbr_table_size)
3387 rp->rbr_index = 0;
3388
3389 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3390 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3391 rp->rbr_pending = 0;
3392 }
3393 }
3394 }
3395
3396 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3397 {
3398 unsigned int index = rp->rcr_index;
3399 int num_rcr = 0;
3400
3401 rp->rx_dropped++;
3402 while (1) {
3403 struct page *page, **link;
3404 u64 addr, val;
3405 u32 rcr_size;
3406
3407 num_rcr++;
3408
3409 val = le64_to_cpup(&rp->rcr[index]);
3410 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3411 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3412 page = niu_find_rxpage(rp, addr, &link);
3413
3414 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3415 RCR_ENTRY_PKTBUFSZ_SHIFT];
3416 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3417 *link = (struct page *) page->mapping;
3418 np->ops->unmap_page(np->device, page->index,
3419 PAGE_SIZE, DMA_FROM_DEVICE);
3420 page->index = 0;
3421 page->mapping = NULL;
3422 __free_page(page);
3423 rp->rbr_refill_pending++;
3424 }
3425
3426 index = NEXT_RCR(rp, index);
3427 if (!(val & RCR_ENTRY_MULTI))
3428 break;
3429
3430 }
3431 rp->rcr_index = index;
3432
3433 return num_rcr;
3434 }
3435
3436 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3437 struct rx_ring_info *rp)
3438 {
3439 unsigned int index = rp->rcr_index;
3440 struct rx_pkt_hdr1 *rh;
3441 struct sk_buff *skb;
3442 int len, num_rcr;
3443
3444 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3445 if (unlikely(!skb))
3446 return niu_rx_pkt_ignore(np, rp);
3447
3448 num_rcr = 0;
3449 while (1) {
3450 struct page *page, **link;
3451 u32 rcr_size, append_size;
3452 u64 addr, val, off;
3453
3454 num_rcr++;
3455
3456 val = le64_to_cpup(&rp->rcr[index]);
3457
3458 len = (val & RCR_ENTRY_L2_LEN) >>
3459 RCR_ENTRY_L2_LEN_SHIFT;
3460 len -= ETH_FCS_LEN;
3461
3462 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3463 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3464 page = niu_find_rxpage(rp, addr, &link);
3465
3466 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3467 RCR_ENTRY_PKTBUFSZ_SHIFT];
3468
3469 off = addr & ~PAGE_MASK;
3470 append_size = rcr_size;
3471 if (num_rcr == 1) {
3472 int ptype;
3473
3474 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3475 if ((ptype == RCR_PKT_TYPE_TCP ||
3476 ptype == RCR_PKT_TYPE_UDP) &&
3477 !(val & (RCR_ENTRY_NOPORT |
3478 RCR_ENTRY_ERROR)))
3479 skb->ip_summed = CHECKSUM_UNNECESSARY;
3480 else
3481 skb_checksum_none_assert(skb);
3482 } else if (!(val & RCR_ENTRY_MULTI))
3483 append_size = len - skb->len;
3484
3485 niu_rx_skb_append(skb, page, off, append_size);
3486 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3487 *link = (struct page *) page->mapping;
3488 np->ops->unmap_page(np->device, page->index,
3489 PAGE_SIZE, DMA_FROM_DEVICE);
3490 page->index = 0;
3491 page->mapping = NULL;
3492 rp->rbr_refill_pending++;
3493 } else
3494 get_page(page);
3495
3496 index = NEXT_RCR(rp, index);
3497 if (!(val & RCR_ENTRY_MULTI))
3498 break;
3499
3500 }
3501 rp->rcr_index = index;
3502
3503 len += sizeof(*rh);
3504 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3505 __pskb_pull_tail(skb, len);
3506
3507 rh = (struct rx_pkt_hdr1 *) skb->data;
3508 if (np->dev->features & NETIF_F_RXHASH)
3509 skb->rxhash = ((u32)rh->hashval2_0 << 24 |
3510 (u32)rh->hashval2_1 << 16 |
3511 (u32)rh->hashval1_1 << 8 |
3512 (u32)rh->hashval1_2 << 0);
3513 skb_pull(skb, sizeof(*rh));
3514
3515 rp->rx_packets++;
3516 rp->rx_bytes += skb->len;
3517
3518 skb->protocol = eth_type_trans(skb, np->dev);
3519 skb_record_rx_queue(skb, rp->rx_channel);
3520 napi_gro_receive(napi, skb);
3521
3522 return num_rcr;
3523 }
3524
3525 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3526 {
3527 int blocks_per_page = rp->rbr_blocks_per_page;
3528 int err, index = rp->rbr_index;
3529
3530 err = 0;
3531 while (index < (rp->rbr_table_size - blocks_per_page)) {
3532 err = niu_rbr_add_page(np, rp, mask, index);
3533 if (err)
3534 break;
3535
3536 index += blocks_per_page;
3537 }
3538
3539 rp->rbr_index = index;
3540 return err;
3541 }
3542
3543 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3544 {
3545 int i;
3546
3547 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3548 struct page *page;
3549
3550 page = rp->rxhash[i];
3551 while (page) {
3552 struct page *next = (struct page *) page->mapping;
3553 u64 base = page->index;
3554
3555 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3556 DMA_FROM_DEVICE);
3557 page->index = 0;
3558 page->mapping = NULL;
3559
3560 __free_page(page);
3561
3562 page = next;
3563 }
3564 }
3565
3566 for (i = 0; i < rp->rbr_table_size; i++)
3567 rp->rbr[i] = cpu_to_le32(0);
3568 rp->rbr_index = 0;
3569 }
3570
3571 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3572 {
3573 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3574 struct sk_buff *skb = tb->skb;
3575 struct tx_pkt_hdr *tp;
3576 u64 tx_flags;
3577 int i, len;
3578
3579 tp = (struct tx_pkt_hdr *) skb->data;
3580 tx_flags = le64_to_cpup(&tp->flags);
3581
3582 rp->tx_packets++;
3583 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3584 ((tx_flags & TXHDR_PAD) / 2));
3585
3586 len = skb_headlen(skb);
3587 np->ops->unmap_single(np->device, tb->mapping,
3588 len, DMA_TO_DEVICE);
3589
3590 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3591 rp->mark_pending--;
3592
3593 tb->skb = NULL;
3594 do {
3595 idx = NEXT_TX(rp, idx);
3596 len -= MAX_TX_DESC_LEN;
3597 } while (len > 0);
3598
3599 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3600 tb = &rp->tx_buffs[idx];
3601 BUG_ON(tb->skb != NULL);
3602 np->ops->unmap_page(np->device, tb->mapping,
3603 skb_shinfo(skb)->frags[i].size,
3604 DMA_TO_DEVICE);
3605 idx = NEXT_TX(rp, idx);
3606 }
3607
3608 dev_kfree_skb(skb);
3609
3610 return idx;
3611 }
3612
3613 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3614
3615 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3616 {
3617 struct netdev_queue *txq;
3618 u16 pkt_cnt, tmp;
3619 int cons, index;
3620 u64 cs;
3621
3622 index = (rp - np->tx_rings);
3623 txq = netdev_get_tx_queue(np->dev, index);
3624
3625 cs = rp->tx_cs;
3626 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3627 goto out;
3628
3629 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3630 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3631 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3632
3633 rp->last_pkt_cnt = tmp;
3634
3635 cons = rp->cons;
3636
3637 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3638 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3639
3640 while (pkt_cnt--)
3641 cons = release_tx_packet(np, rp, cons);
3642
3643 rp->cons = cons;
3644 smp_mb();
3645
3646 out:
3647 if (unlikely(netif_tx_queue_stopped(txq) &&
3648 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3649 __netif_tx_lock(txq, smp_processor_id());
3650 if (netif_tx_queue_stopped(txq) &&
3651 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3652 netif_tx_wake_queue(txq);
3653 __netif_tx_unlock(txq);
3654 }
3655 }
3656
3657 static inline void niu_sync_rx_discard_stats(struct niu *np,
3658 struct rx_ring_info *rp,
3659 const int limit)
3660 {
3661 /* This elaborate scheme is needed for reading the RX discard
3662 * counters, as they are only 16-bit and can overflow quickly,
3663 * and because the overflow indication bit is not usable as
3664 * the counter value does not wrap, but remains at max value
3665 * 0xFFFF.
3666 *
3667 * In theory and in practice counters can be lost in between
3668 * reading nr64() and clearing the counter nw64(). For this
3669 * reason, the number of counter clearings nw64() is
3670 * limited/reduced though the limit parameter.
3671 */
3672 int rx_channel = rp->rx_channel;
3673 u32 misc, wred;
3674
3675 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3676 * following discard events: IPP (Input Port Process),
3677 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3678 * Block Ring) prefetch buffer is empty.
3679 */
3680 misc = nr64(RXMISC(rx_channel));
3681 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3682 nw64(RXMISC(rx_channel), 0);
3683 rp->rx_errors += misc & RXMISC_COUNT;
3684
3685 if (unlikely(misc & RXMISC_OFLOW))
3686 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3687 rx_channel);
3688
3689 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3690 "rx-%d: MISC drop=%u over=%u\n",
3691 rx_channel, misc, misc-limit);
3692 }
3693
3694 /* WRED (Weighted Random Early Discard) by hardware */
3695 wred = nr64(RED_DIS_CNT(rx_channel));
3696 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3697 nw64(RED_DIS_CNT(rx_channel), 0);
3698 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3699
3700 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3701 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3702
3703 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3704 "rx-%d: WRED drop=%u over=%u\n",
3705 rx_channel, wred, wred-limit);
3706 }
3707 }
3708
3709 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3710 struct rx_ring_info *rp, int budget)
3711 {
3712 int qlen, rcr_done = 0, work_done = 0;
3713 struct rxdma_mailbox *mbox = rp->mbox;
3714 u64 stat;
3715
3716 #if 1
3717 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3718 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3719 #else
3720 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3721 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3722 #endif
3723 mbox->rx_dma_ctl_stat = 0;
3724 mbox->rcrstat_a = 0;
3725
3726 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3727 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3728 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3729
3730 rcr_done = work_done = 0;
3731 qlen = min(qlen, budget);
3732 while (work_done < qlen) {
3733 rcr_done += niu_process_rx_pkt(napi, np, rp);
3734 work_done++;
3735 }
3736
3737 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3738 unsigned int i;
3739
3740 for (i = 0; i < rp->rbr_refill_pending; i++)
3741 niu_rbr_refill(np, rp, GFP_ATOMIC);
3742 rp->rbr_refill_pending = 0;
3743 }
3744
3745 stat = (RX_DMA_CTL_STAT_MEX |
3746 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3747 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3748
3749 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3750
3751 /* Only sync discards stats when qlen indicate potential for drops */
3752 if (qlen > 10)
3753 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3754
3755 return work_done;
3756 }
3757
3758 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3759 {
3760 u64 v0 = lp->v0;
3761 u32 tx_vec = (v0 >> 32);
3762 u32 rx_vec = (v0 & 0xffffffff);
3763 int i, work_done = 0;
3764
3765 netif_printk(np, intr, KERN_DEBUG, np->dev,
3766 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3767
3768 for (i = 0; i < np->num_tx_rings; i++) {
3769 struct tx_ring_info *rp = &np->tx_rings[i];
3770 if (tx_vec & (1 << rp->tx_channel))
3771 niu_tx_work(np, rp);
3772 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3773 }
3774
3775 for (i = 0; i < np->num_rx_rings; i++) {
3776 struct rx_ring_info *rp = &np->rx_rings[i];
3777
3778 if (rx_vec & (1 << rp->rx_channel)) {
3779 int this_work_done;
3780
3781 this_work_done = niu_rx_work(&lp->napi, np, rp,
3782 budget);
3783
3784 budget -= this_work_done;
3785 work_done += this_work_done;
3786 }
3787 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3788 }
3789
3790 return work_done;
3791 }
3792
3793 static int niu_poll(struct napi_struct *napi, int budget)
3794 {
3795 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3796 struct niu *np = lp->np;
3797 int work_done;
3798
3799 work_done = niu_poll_core(np, lp, budget);
3800
3801 if (work_done < budget) {
3802 napi_complete(napi);
3803 niu_ldg_rearm(np, lp, 1);
3804 }
3805 return work_done;
3806 }
3807
3808 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3809 u64 stat)
3810 {
3811 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3812
3813 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3814 pr_cont("RBR_TMOUT ");
3815 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3816 pr_cont("RSP_CNT ");
3817 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3818 pr_cont("BYTE_EN_BUS ");
3819 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3820 pr_cont("RSP_DAT ");
3821 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3822 pr_cont("RCR_ACK ");
3823 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3824 pr_cont("RCR_SHA_PAR ");
3825 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3826 pr_cont("RBR_PRE_PAR ");
3827 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3828 pr_cont("CONFIG ");
3829 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3830 pr_cont("RCRINCON ");
3831 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3832 pr_cont("RCRFULL ");
3833 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3834 pr_cont("RBRFULL ");
3835 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3836 pr_cont("RBRLOGPAGE ");
3837 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3838 pr_cont("CFIGLOGPAGE ");
3839 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3840 pr_cont("DC_FIDO ");
3841
3842 pr_cont(")\n");
3843 }
3844
3845 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3846 {
3847 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3848 int err = 0;
3849
3850
3851 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3852 RX_DMA_CTL_STAT_PORT_FATAL))
3853 err = -EINVAL;
3854
3855 if (err) {
3856 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3857 rp->rx_channel,
3858 (unsigned long long) stat);
3859
3860 niu_log_rxchan_errors(np, rp, stat);
3861 }
3862
3863 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3864 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3865
3866 return err;
3867 }
3868
3869 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3870 u64 cs)
3871 {
3872 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3873
3874 if (cs & TX_CS_MBOX_ERR)
3875 pr_cont("MBOX ");
3876 if (cs & TX_CS_PKT_SIZE_ERR)
3877 pr_cont("PKT_SIZE ");
3878 if (cs & TX_CS_TX_RING_OFLOW)
3879 pr_cont("TX_RING_OFLOW ");
3880 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3881 pr_cont("PREF_BUF_PAR ");
3882 if (cs & TX_CS_NACK_PREF)
3883 pr_cont("NACK_PREF ");
3884 if (cs & TX_CS_NACK_PKT_RD)
3885 pr_cont("NACK_PKT_RD ");
3886 if (cs & TX_CS_CONF_PART_ERR)
3887 pr_cont("CONF_PART ");
3888 if (cs & TX_CS_PKT_PRT_ERR)
3889 pr_cont("PKT_PTR ");
3890
3891 pr_cont(")\n");
3892 }
3893
3894 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3895 {
3896 u64 cs, logh, logl;
3897
3898 cs = nr64(TX_CS(rp->tx_channel));
3899 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3900 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3901
3902 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3903 rp->tx_channel,
3904 (unsigned long long)cs,
3905 (unsigned long long)logh,
3906 (unsigned long long)logl);
3907
3908 niu_log_txchan_errors(np, rp, cs);
3909
3910 return -ENODEV;
3911 }
3912
3913 static int niu_mif_interrupt(struct niu *np)
3914 {
3915 u64 mif_status = nr64(MIF_STATUS);
3916 int phy_mdint = 0;
3917
3918 if (np->flags & NIU_FLAGS_XMAC) {
3919 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3920
3921 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3922 phy_mdint = 1;
3923 }
3924
3925 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3926 (unsigned long long)mif_status, phy_mdint);
3927
3928 return -ENODEV;
3929 }
3930
3931 static void niu_xmac_interrupt(struct niu *np)
3932 {
3933 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3934 u64 val;
3935
3936 val = nr64_mac(XTXMAC_STATUS);
3937 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3938 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3939 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3940 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3941 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3942 mp->tx_fifo_errors++;
3943 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3944 mp->tx_overflow_errors++;
3945 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3946 mp->tx_max_pkt_size_errors++;
3947 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3948 mp->tx_underflow_errors++;
3949
3950 val = nr64_mac(XRXMAC_STATUS);
3951 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3952 mp->rx_local_faults++;
3953 if (val & XRXMAC_STATUS_RFLT_DET)
3954 mp->rx_remote_faults++;
3955 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3956 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3957 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3958 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3959 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3960 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3961 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3962 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3963 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3964 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3965 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3966 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3967 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3968 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3969 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3970 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3971 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3972 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3973 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3974 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3975 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3976 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3977 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3978 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3979 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3980 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3981 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3982 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3983 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3984 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3985 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3986 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3987 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3988 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3989 if (val & XRXMAC_STATUS_RXUFLOW)
3990 mp->rx_underflows++;
3991 if (val & XRXMAC_STATUS_RXOFLOW)
3992 mp->rx_overflows++;
3993
3994 val = nr64_mac(XMAC_FC_STAT);
3995 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3996 mp->pause_off_state++;
3997 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3998 mp->pause_on_state++;
3999 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
4000 mp->pause_received++;
4001 }
4002
4003 static void niu_bmac_interrupt(struct niu *np)
4004 {
4005 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4006 u64 val;
4007
4008 val = nr64_mac(BTXMAC_STATUS);
4009 if (val & BTXMAC_STATUS_UNDERRUN)
4010 mp->tx_underflow_errors++;
4011 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
4012 mp->tx_max_pkt_size_errors++;
4013 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4014 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4015 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4016 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4017
4018 val = nr64_mac(BRXMAC_STATUS);
4019 if (val & BRXMAC_STATUS_OVERFLOW)
4020 mp->rx_overflows++;
4021 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4022 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4023 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4024 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4025 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4026 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4027 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4028 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4029
4030 val = nr64_mac(BMAC_CTRL_STATUS);
4031 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4032 mp->pause_off_state++;
4033 if (val & BMAC_CTRL_STATUS_PAUSE)
4034 mp->pause_on_state++;
4035 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4036 mp->pause_received++;
4037 }
4038
4039 static int niu_mac_interrupt(struct niu *np)
4040 {
4041 if (np->flags & NIU_FLAGS_XMAC)
4042 niu_xmac_interrupt(np);
4043 else
4044 niu_bmac_interrupt(np);
4045
4046 return 0;
4047 }
4048
4049 static void niu_log_device_error(struct niu *np, u64 stat)
4050 {
4051 netdev_err(np->dev, "Core device errors ( ");
4052
4053 if (stat & SYS_ERR_MASK_META2)
4054 pr_cont("META2 ");
4055 if (stat & SYS_ERR_MASK_META1)
4056 pr_cont("META1 ");
4057 if (stat & SYS_ERR_MASK_PEU)
4058 pr_cont("PEU ");
4059 if (stat & SYS_ERR_MASK_TXC)
4060 pr_cont("TXC ");
4061 if (stat & SYS_ERR_MASK_RDMC)
4062 pr_cont("RDMC ");
4063 if (stat & SYS_ERR_MASK_TDMC)
4064 pr_cont("TDMC ");
4065 if (stat & SYS_ERR_MASK_ZCP)
4066 pr_cont("ZCP ");
4067 if (stat & SYS_ERR_MASK_FFLP)
4068 pr_cont("FFLP ");
4069 if (stat & SYS_ERR_MASK_IPP)
4070 pr_cont("IPP ");
4071 if (stat & SYS_ERR_MASK_MAC)
4072 pr_cont("MAC ");
4073 if (stat & SYS_ERR_MASK_SMX)
4074 pr_cont("SMX ");
4075
4076 pr_cont(")\n");
4077 }
4078
4079 static int niu_device_error(struct niu *np)
4080 {
4081 u64 stat = nr64(SYS_ERR_STAT);
4082
4083 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4084 (unsigned long long)stat);
4085
4086 niu_log_device_error(np, stat);
4087
4088 return -ENODEV;
4089 }
4090
4091 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4092 u64 v0, u64 v1, u64 v2)
4093 {
4094
4095 int i, err = 0;
4096
4097 lp->v0 = v0;
4098 lp->v1 = v1;
4099 lp->v2 = v2;
4100
4101 if (v1 & 0x00000000ffffffffULL) {
4102 u32 rx_vec = (v1 & 0xffffffff);
4103
4104 for (i = 0; i < np->num_rx_rings; i++) {
4105 struct rx_ring_info *rp = &np->rx_rings[i];
4106
4107 if (rx_vec & (1 << rp->rx_channel)) {
4108 int r = niu_rx_error(np, rp);
4109 if (r) {
4110 err = r;
4111 } else {
4112 if (!v0)
4113 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4114 RX_DMA_CTL_STAT_MEX);
4115 }
4116 }
4117 }
4118 }
4119 if (v1 & 0x7fffffff00000000ULL) {
4120 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4121
4122 for (i = 0; i < np->num_tx_rings; i++) {
4123 struct tx_ring_info *rp = &np->tx_rings[i];
4124
4125 if (tx_vec & (1 << rp->tx_channel)) {
4126 int r = niu_tx_error(np, rp);
4127 if (r)
4128 err = r;
4129 }
4130 }
4131 }
4132 if ((v0 | v1) & 0x8000000000000000ULL) {
4133 int r = niu_mif_interrupt(np);
4134 if (r)
4135 err = r;
4136 }
4137 if (v2) {
4138 if (v2 & 0x01ef) {
4139 int r = niu_mac_interrupt(np);
4140 if (r)
4141 err = r;
4142 }
4143 if (v2 & 0x0210) {
4144 int r = niu_device_error(np);
4145 if (r)
4146 err = r;
4147 }
4148 }
4149
4150 if (err)
4151 niu_enable_interrupts(np, 0);
4152
4153 return err;
4154 }
4155
4156 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4157 int ldn)
4158 {
4159 struct rxdma_mailbox *mbox = rp->mbox;
4160 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4161
4162 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4163 RX_DMA_CTL_STAT_RCRTO);
4164 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4165
4166 netif_printk(np, intr, KERN_DEBUG, np->dev,
4167 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4168 }
4169
4170 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4171 int ldn)
4172 {
4173 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4174
4175 netif_printk(np, intr, KERN_DEBUG, np->dev,
4176 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4177 }
4178
4179 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4180 {
4181 struct niu_parent *parent = np->parent;
4182 u32 rx_vec, tx_vec;
4183 int i;
4184
4185 tx_vec = (v0 >> 32);
4186 rx_vec = (v0 & 0xffffffff);
4187
4188 for (i = 0; i < np->num_rx_rings; i++) {
4189 struct rx_ring_info *rp = &np->rx_rings[i];
4190 int ldn = LDN_RXDMA(rp->rx_channel);
4191
4192 if (parent->ldg_map[ldn] != ldg)
4193 continue;
4194
4195 nw64(LD_IM0(ldn), LD_IM0_MASK);
4196 if (rx_vec & (1 << rp->rx_channel))
4197 niu_rxchan_intr(np, rp, ldn);
4198 }
4199
4200 for (i = 0; i < np->num_tx_rings; i++) {
4201 struct tx_ring_info *rp = &np->tx_rings[i];
4202 int ldn = LDN_TXDMA(rp->tx_channel);
4203
4204 if (parent->ldg_map[ldn] != ldg)
4205 continue;
4206
4207 nw64(LD_IM0(ldn), LD_IM0_MASK);
4208 if (tx_vec & (1 << rp->tx_channel))
4209 niu_txchan_intr(np, rp, ldn);
4210 }
4211 }
4212
4213 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4214 u64 v0, u64 v1, u64 v2)
4215 {
4216 if (likely(napi_schedule_prep(&lp->napi))) {
4217 lp->v0 = v0;
4218 lp->v1 = v1;
4219 lp->v2 = v2;
4220 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4221 __napi_schedule(&lp->napi);
4222 }
4223 }
4224
4225 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4226 {
4227 struct niu_ldg *lp = dev_id;
4228 struct niu *np = lp->np;
4229 int ldg = lp->ldg_num;
4230 unsigned long flags;
4231 u64 v0, v1, v2;
4232
4233 if (netif_msg_intr(np))
4234 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4235 __func__, lp, ldg);
4236
4237 spin_lock_irqsave(&np->lock, flags);
4238
4239 v0 = nr64(LDSV0(ldg));
4240 v1 = nr64(LDSV1(ldg));
4241 v2 = nr64(LDSV2(ldg));
4242
4243 if (netif_msg_intr(np))
4244 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4245 (unsigned long long) v0,
4246 (unsigned long long) v1,
4247 (unsigned long long) v2);
4248
4249 if (unlikely(!v0 && !v1 && !v2)) {
4250 spin_unlock_irqrestore(&np->lock, flags);
4251 return IRQ_NONE;
4252 }
4253
4254 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4255 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4256 if (err)
4257 goto out;
4258 }
4259 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4260 niu_schedule_napi(np, lp, v0, v1, v2);
4261 else
4262 niu_ldg_rearm(np, lp, 1);
4263 out:
4264 spin_unlock_irqrestore(&np->lock, flags);
4265
4266 return IRQ_HANDLED;
4267 }
4268
4269 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4270 {
4271 if (rp->mbox) {
4272 np->ops->free_coherent(np->device,
4273 sizeof(struct rxdma_mailbox),
4274 rp->mbox, rp->mbox_dma);
4275 rp->mbox = NULL;
4276 }
4277 if (rp->rcr) {
4278 np->ops->free_coherent(np->device,
4279 MAX_RCR_RING_SIZE * sizeof(__le64),
4280 rp->rcr, rp->rcr_dma);
4281 rp->rcr = NULL;
4282 rp->rcr_table_size = 0;
4283 rp->rcr_index = 0;
4284 }
4285 if (rp->rbr) {
4286 niu_rbr_free(np, rp);
4287
4288 np->ops->free_coherent(np->device,
4289 MAX_RBR_RING_SIZE * sizeof(__le32),
4290 rp->rbr, rp->rbr_dma);
4291 rp->rbr = NULL;
4292 rp->rbr_table_size = 0;
4293 rp->rbr_index = 0;
4294 }
4295 kfree(rp->rxhash);
4296 rp->rxhash = NULL;
4297 }
4298
4299 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4300 {
4301 if (rp->mbox) {
4302 np->ops->free_coherent(np->device,
4303 sizeof(struct txdma_mailbox),
4304 rp->mbox, rp->mbox_dma);
4305 rp->mbox = NULL;
4306 }
4307 if (rp->descr) {
4308 int i;
4309
4310 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4311 if (rp->tx_buffs[i].skb)
4312 (void) release_tx_packet(np, rp, i);
4313 }
4314
4315 np->ops->free_coherent(np->device,
4316 MAX_TX_RING_SIZE * sizeof(__le64),
4317 rp->descr, rp->descr_dma);
4318 rp->descr = NULL;
4319 rp->pending = 0;
4320 rp->prod = 0;
4321 rp->cons = 0;
4322 rp->wrap_bit = 0;
4323 }
4324 }
4325
4326 static void niu_free_channels(struct niu *np)
4327 {
4328 int i;
4329
4330 if (np->rx_rings) {
4331 for (i = 0; i < np->num_rx_rings; i++) {
4332 struct rx_ring_info *rp = &np->rx_rings[i];
4333
4334 niu_free_rx_ring_info(np, rp);
4335 }
4336 kfree(np->rx_rings);
4337 np->rx_rings = NULL;
4338 np->num_rx_rings = 0;
4339 }
4340
4341 if (np->tx_rings) {
4342 for (i = 0; i < np->num_tx_rings; i++) {
4343 struct tx_ring_info *rp = &np->tx_rings[i];
4344
4345 niu_free_tx_ring_info(np, rp);
4346 }
4347 kfree(np->tx_rings);
4348 np->tx_rings = NULL;
4349 np->num_tx_rings = 0;
4350 }
4351 }
4352
4353 static int niu_alloc_rx_ring_info(struct niu *np,
4354 struct rx_ring_info *rp)
4355 {
4356 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4357
4358 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4359 GFP_KERNEL);
4360 if (!rp->rxhash)
4361 return -ENOMEM;
4362
4363 rp->mbox = np->ops->alloc_coherent(np->device,
4364 sizeof(struct rxdma_mailbox),
4365 &rp->mbox_dma, GFP_KERNEL);
4366 if (!rp->mbox)
4367 return -ENOMEM;
4368 if ((unsigned long)rp->mbox & (64UL - 1)) {
4369 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4370 rp->mbox);
4371 return -EINVAL;
4372 }
4373
4374 rp->rcr = np->ops->alloc_coherent(np->device,
4375 MAX_RCR_RING_SIZE * sizeof(__le64),
4376 &rp->rcr_dma, GFP_KERNEL);
4377 if (!rp->rcr)
4378 return -ENOMEM;
4379 if ((unsigned long)rp->rcr & (64UL - 1)) {
4380 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4381 rp->rcr);
4382 return -EINVAL;
4383 }
4384 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4385 rp->rcr_index = 0;
4386
4387 rp->rbr = np->ops->alloc_coherent(np->device,
4388 MAX_RBR_RING_SIZE * sizeof(__le32),
4389 &rp->rbr_dma, GFP_KERNEL);
4390 if (!rp->rbr)
4391 return -ENOMEM;
4392 if ((unsigned long)rp->rbr & (64UL - 1)) {
4393 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4394 rp->rbr);
4395 return -EINVAL;
4396 }
4397 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4398 rp->rbr_index = 0;
4399 rp->rbr_pending = 0;
4400
4401 return 0;
4402 }
4403
4404 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4405 {
4406 int mtu = np->dev->mtu;
4407
4408 /* These values are recommended by the HW designers for fair
4409 * utilization of DRR amongst the rings.
4410 */
4411 rp->max_burst = mtu + 32;
4412 if (rp->max_burst > 4096)
4413 rp->max_burst = 4096;
4414 }
4415
4416 static int niu_alloc_tx_ring_info(struct niu *np,
4417 struct tx_ring_info *rp)
4418 {
4419 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4420
4421 rp->mbox = np->ops->alloc_coherent(np->device,
4422 sizeof(struct txdma_mailbox),
4423 &rp->mbox_dma, GFP_KERNEL);
4424 if (!rp->mbox)
4425 return -ENOMEM;
4426 if ((unsigned long)rp->mbox & (64UL - 1)) {
4427 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4428 rp->mbox);
4429 return -EINVAL;
4430 }
4431
4432 rp->descr = np->ops->alloc_coherent(np->device,
4433 MAX_TX_RING_SIZE * sizeof(__le64),
4434 &rp->descr_dma, GFP_KERNEL);
4435 if (!rp->descr)
4436 return -ENOMEM;
4437 if ((unsigned long)rp->descr & (64UL - 1)) {
4438 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4439 rp->descr);
4440 return -EINVAL;
4441 }
4442
4443 rp->pending = MAX_TX_RING_SIZE;
4444 rp->prod = 0;
4445 rp->cons = 0;
4446 rp->wrap_bit = 0;
4447
4448 /* XXX make these configurable... XXX */
4449 rp->mark_freq = rp->pending / 4;
4450
4451 niu_set_max_burst(np, rp);
4452
4453 return 0;
4454 }
4455
4456 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4457 {
4458 u16 bss;
4459
4460 bss = min(PAGE_SHIFT, 15);
4461
4462 rp->rbr_block_size = 1 << bss;
4463 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4464
4465 rp->rbr_sizes[0] = 256;
4466 rp->rbr_sizes[1] = 1024;
4467 if (np->dev->mtu > ETH_DATA_LEN) {
4468 switch (PAGE_SIZE) {
4469 case 4 * 1024:
4470 rp->rbr_sizes[2] = 4096;
4471 break;
4472
4473 default:
4474 rp->rbr_sizes[2] = 8192;
4475 break;
4476 }
4477 } else {
4478 rp->rbr_sizes[2] = 2048;
4479 }
4480 rp->rbr_sizes[3] = rp->rbr_block_size;
4481 }
4482
4483 static int niu_alloc_channels(struct niu *np)
4484 {
4485 struct niu_parent *parent = np->parent;
4486 int first_rx_channel, first_tx_channel;
4487 int num_rx_rings, num_tx_rings;
4488 struct rx_ring_info *rx_rings;
4489 struct tx_ring_info *tx_rings;
4490 int i, port, err;
4491
4492 port = np->port;
4493 first_rx_channel = first_tx_channel = 0;
4494 for (i = 0; i < port; i++) {
4495 first_rx_channel += parent->rxchan_per_port[i];
4496 first_tx_channel += parent->txchan_per_port[i];
4497 }
4498
4499 num_rx_rings = parent->rxchan_per_port[port];
4500 num_tx_rings = parent->txchan_per_port[port];
4501
4502 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4503 GFP_KERNEL);
4504 err = -ENOMEM;
4505 if (!rx_rings)
4506 goto out_err;
4507
4508 np->num_rx_rings = num_rx_rings;
4509 smp_wmb();
4510 np->rx_rings = rx_rings;
4511
4512 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4513
4514 for (i = 0; i < np->num_rx_rings; i++) {
4515 struct rx_ring_info *rp = &np->rx_rings[i];
4516
4517 rp->np = np;
4518 rp->rx_channel = first_rx_channel + i;
4519
4520 err = niu_alloc_rx_ring_info(np, rp);
4521 if (err)
4522 goto out_err;
4523
4524 niu_size_rbr(np, rp);
4525
4526 /* XXX better defaults, configurable, etc... XXX */
4527 rp->nonsyn_window = 64;
4528 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4529 rp->syn_window = 64;
4530 rp->syn_threshold = rp->rcr_table_size - 64;
4531 rp->rcr_pkt_threshold = 16;
4532 rp->rcr_timeout = 8;
4533 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4534 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4535 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4536
4537 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4538 if (err)
4539 return err;
4540 }
4541
4542 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4543 GFP_KERNEL);
4544 err = -ENOMEM;
4545 if (!tx_rings)
4546 goto out_err;
4547
4548 np->num_tx_rings = num_tx_rings;
4549 smp_wmb();
4550 np->tx_rings = tx_rings;
4551
4552 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4553
4554 for (i = 0; i < np->num_tx_rings; i++) {
4555 struct tx_ring_info *rp = &np->tx_rings[i];
4556
4557 rp->np = np;
4558 rp->tx_channel = first_tx_channel + i;
4559
4560 err = niu_alloc_tx_ring_info(np, rp);
4561 if (err)
4562 goto out_err;
4563 }
4564
4565 return 0;
4566
4567 out_err:
4568 niu_free_channels(np);
4569 return err;
4570 }
4571
4572 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4573 {
4574 int limit = 1000;
4575
4576 while (--limit > 0) {
4577 u64 val = nr64(TX_CS(channel));
4578 if (val & TX_CS_SNG_STATE)
4579 return 0;
4580 }
4581 return -ENODEV;
4582 }
4583
4584 static int niu_tx_channel_stop(struct niu *np, int channel)
4585 {
4586 u64 val = nr64(TX_CS(channel));
4587
4588 val |= TX_CS_STOP_N_GO;
4589 nw64(TX_CS(channel), val);
4590
4591 return niu_tx_cs_sng_poll(np, channel);
4592 }
4593
4594 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4595 {
4596 int limit = 1000;
4597
4598 while (--limit > 0) {
4599 u64 val = nr64(TX_CS(channel));
4600 if (!(val & TX_CS_RST))
4601 return 0;
4602 }
4603 return -ENODEV;
4604 }
4605
4606 static int niu_tx_channel_reset(struct niu *np, int channel)
4607 {
4608 u64 val = nr64(TX_CS(channel));
4609 int err;
4610
4611 val |= TX_CS_RST;
4612 nw64(TX_CS(channel), val);
4613
4614 err = niu_tx_cs_reset_poll(np, channel);
4615 if (!err)
4616 nw64(TX_RING_KICK(channel), 0);
4617
4618 return err;
4619 }
4620
4621 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4622 {
4623 u64 val;
4624
4625 nw64(TX_LOG_MASK1(channel), 0);
4626 nw64(TX_LOG_VAL1(channel), 0);
4627 nw64(TX_LOG_MASK2(channel), 0);
4628 nw64(TX_LOG_VAL2(channel), 0);
4629 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4630 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4631 nw64(TX_LOG_PAGE_HDL(channel), 0);
4632
4633 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4634 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4635 nw64(TX_LOG_PAGE_VLD(channel), val);
4636
4637 /* XXX TXDMA 32bit mode? XXX */
4638
4639 return 0;
4640 }
4641
4642 static void niu_txc_enable_port(struct niu *np, int on)
4643 {
4644 unsigned long flags;
4645 u64 val, mask;
4646
4647 niu_lock_parent(np, flags);
4648 val = nr64(TXC_CONTROL);
4649 mask = (u64)1 << np->port;
4650 if (on) {
4651 val |= TXC_CONTROL_ENABLE | mask;
4652 } else {
4653 val &= ~mask;
4654 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4655 val &= ~TXC_CONTROL_ENABLE;
4656 }
4657 nw64(TXC_CONTROL, val);
4658 niu_unlock_parent(np, flags);
4659 }
4660
4661 static void niu_txc_set_imask(struct niu *np, u64 imask)
4662 {
4663 unsigned long flags;
4664 u64 val;
4665
4666 niu_lock_parent(np, flags);
4667 val = nr64(TXC_INT_MASK);
4668 val &= ~TXC_INT_MASK_VAL(np->port);
4669 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4670 niu_unlock_parent(np, flags);
4671 }
4672
4673 static void niu_txc_port_dma_enable(struct niu *np, int on)
4674 {
4675 u64 val = 0;
4676
4677 if (on) {
4678 int i;
4679
4680 for (i = 0; i < np->num_tx_rings; i++)
4681 val |= (1 << np->tx_rings[i].tx_channel);
4682 }
4683 nw64(TXC_PORT_DMA(np->port), val);
4684 }
4685
4686 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4687 {
4688 int err, channel = rp->tx_channel;
4689 u64 val, ring_len;
4690
4691 err = niu_tx_channel_stop(np, channel);
4692 if (err)
4693 return err;
4694
4695 err = niu_tx_channel_reset(np, channel);
4696 if (err)
4697 return err;
4698
4699 err = niu_tx_channel_lpage_init(np, channel);
4700 if (err)
4701 return err;
4702
4703 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4704 nw64(TX_ENT_MSK(channel), 0);
4705
4706 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4707 TX_RNG_CFIG_STADDR)) {
4708 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4709 channel, (unsigned long long)rp->descr_dma);
4710 return -EINVAL;
4711 }
4712
4713 /* The length field in TX_RNG_CFIG is measured in 64-byte
4714 * blocks. rp->pending is the number of TX descriptors in
4715 * our ring, 8 bytes each, thus we divide by 8 bytes more
4716 * to get the proper value the chip wants.
4717 */
4718 ring_len = (rp->pending / 8);
4719
4720 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4721 rp->descr_dma);
4722 nw64(TX_RNG_CFIG(channel), val);
4723
4724 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4725 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4726 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4727 channel, (unsigned long long)rp->mbox_dma);
4728 return -EINVAL;
4729 }
4730 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4731 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4732
4733 nw64(TX_CS(channel), 0);
4734
4735 rp->last_pkt_cnt = 0;
4736
4737 return 0;
4738 }
4739
4740 static void niu_init_rdc_groups(struct niu *np)
4741 {
4742 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4743 int i, first_table_num = tp->first_table_num;
4744
4745 for (i = 0; i < tp->num_tables; i++) {
4746 struct rdc_table *tbl = &tp->tables[i];
4747 int this_table = first_table_num + i;
4748 int slot;
4749
4750 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4751 nw64(RDC_TBL(this_table, slot),
4752 tbl->rxdma_channel[slot]);
4753 }
4754
4755 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4756 }
4757
4758 static void niu_init_drr_weight(struct niu *np)
4759 {
4760 int type = phy_decode(np->parent->port_phy, np->port);
4761 u64 val;
4762
4763 switch (type) {
4764 case PORT_TYPE_10G:
4765 val = PT_DRR_WEIGHT_DEFAULT_10G;
4766 break;
4767
4768 case PORT_TYPE_1G:
4769 default:
4770 val = PT_DRR_WEIGHT_DEFAULT_1G;
4771 break;
4772 }
4773 nw64(PT_DRR_WT(np->port), val);
4774 }
4775
4776 static int niu_init_hostinfo(struct niu *np)
4777 {
4778 struct niu_parent *parent = np->parent;
4779 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4780 int i, err, num_alt = niu_num_alt_addr(np);
4781 int first_rdc_table = tp->first_table_num;
4782
4783 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4784 if (err)
4785 return err;
4786
4787 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4788 if (err)
4789 return err;
4790
4791 for (i = 0; i < num_alt; i++) {
4792 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4793 if (err)
4794 return err;
4795 }
4796
4797 return 0;
4798 }
4799
4800 static int niu_rx_channel_reset(struct niu *np, int channel)
4801 {
4802 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4803 RXDMA_CFIG1_RST, 1000, 10,
4804 "RXDMA_CFIG1");
4805 }
4806
4807 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4808 {
4809 u64 val;
4810
4811 nw64(RX_LOG_MASK1(channel), 0);
4812 nw64(RX_LOG_VAL1(channel), 0);
4813 nw64(RX_LOG_MASK2(channel), 0);
4814 nw64(RX_LOG_VAL2(channel), 0);
4815 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4816 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4817 nw64(RX_LOG_PAGE_HDL(channel), 0);
4818
4819 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4820 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4821 nw64(RX_LOG_PAGE_VLD(channel), val);
4822
4823 return 0;
4824 }
4825
4826 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4827 {
4828 u64 val;
4829
4830 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4831 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4832 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4833 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4834 nw64(RDC_RED_PARA(rp->rx_channel), val);
4835 }
4836
4837 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4838 {
4839 u64 val = 0;
4840
4841 *ret = 0;
4842 switch (rp->rbr_block_size) {
4843 case 4 * 1024:
4844 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4845 break;
4846 case 8 * 1024:
4847 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4848 break;
4849 case 16 * 1024:
4850 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4851 break;
4852 case 32 * 1024:
4853 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4854 break;
4855 default:
4856 return -EINVAL;
4857 }
4858 val |= RBR_CFIG_B_VLD2;
4859 switch (rp->rbr_sizes[2]) {
4860 case 2 * 1024:
4861 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4862 break;
4863 case 4 * 1024:
4864 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4865 break;
4866 case 8 * 1024:
4867 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4868 break;
4869 case 16 * 1024:
4870 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4871 break;
4872
4873 default:
4874 return -EINVAL;
4875 }
4876 val |= RBR_CFIG_B_VLD1;
4877 switch (rp->rbr_sizes[1]) {
4878 case 1 * 1024:
4879 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4880 break;
4881 case 2 * 1024:
4882 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4883 break;
4884 case 4 * 1024:
4885 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4886 break;
4887 case 8 * 1024:
4888 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4889 break;
4890
4891 default:
4892 return -EINVAL;
4893 }
4894 val |= RBR_CFIG_B_VLD0;
4895 switch (rp->rbr_sizes[0]) {
4896 case 256:
4897 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4898 break;
4899 case 512:
4900 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4901 break;
4902 case 1 * 1024:
4903 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4904 break;
4905 case 2 * 1024:
4906 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4907 break;
4908
4909 default:
4910 return -EINVAL;
4911 }
4912
4913 *ret = val;
4914 return 0;
4915 }
4916
4917 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4918 {
4919 u64 val = nr64(RXDMA_CFIG1(channel));
4920 int limit;
4921
4922 if (on)
4923 val |= RXDMA_CFIG1_EN;
4924 else
4925 val &= ~RXDMA_CFIG1_EN;
4926 nw64(RXDMA_CFIG1(channel), val);
4927
4928 limit = 1000;
4929 while (--limit > 0) {
4930 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4931 break;
4932 udelay(10);
4933 }
4934 if (limit <= 0)
4935 return -ENODEV;
4936 return 0;
4937 }
4938
4939 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4940 {
4941 int err, channel = rp->rx_channel;
4942 u64 val;
4943
4944 err = niu_rx_channel_reset(np, channel);
4945 if (err)
4946 return err;
4947
4948 err = niu_rx_channel_lpage_init(np, channel);
4949 if (err)
4950 return err;
4951
4952 niu_rx_channel_wred_init(np, rp);
4953
4954 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4955 nw64(RX_DMA_CTL_STAT(channel),
4956 (RX_DMA_CTL_STAT_MEX |
4957 RX_DMA_CTL_STAT_RCRTHRES |
4958 RX_DMA_CTL_STAT_RCRTO |
4959 RX_DMA_CTL_STAT_RBR_EMPTY));
4960 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4961 nw64(RXDMA_CFIG2(channel),
4962 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4963 RXDMA_CFIG2_FULL_HDR));
4964 nw64(RBR_CFIG_A(channel),
4965 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4966 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4967 err = niu_compute_rbr_cfig_b(rp, &val);
4968 if (err)
4969 return err;
4970 nw64(RBR_CFIG_B(channel), val);
4971 nw64(RCRCFIG_A(channel),
4972 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4973 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4974 nw64(RCRCFIG_B(channel),
4975 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4976 RCRCFIG_B_ENTOUT |
4977 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4978
4979 err = niu_enable_rx_channel(np, channel, 1);
4980 if (err)
4981 return err;
4982
4983 nw64(RBR_KICK(channel), rp->rbr_index);
4984
4985 val = nr64(RX_DMA_CTL_STAT(channel));
4986 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4987 nw64(RX_DMA_CTL_STAT(channel), val);
4988
4989 return 0;
4990 }
4991
4992 static int niu_init_rx_channels(struct niu *np)
4993 {
4994 unsigned long flags;
4995 u64 seed = jiffies_64;
4996 int err, i;
4997
4998 niu_lock_parent(np, flags);
4999 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
5000 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
5001 niu_unlock_parent(np, flags);
5002
5003 /* XXX RXDMA 32bit mode? XXX */
5004
5005 niu_init_rdc_groups(np);
5006 niu_init_drr_weight(np);
5007
5008 err = niu_init_hostinfo(np);
5009 if (err)
5010 return err;
5011
5012 for (i = 0; i < np->num_rx_rings; i++) {
5013 struct rx_ring_info *rp = &np->rx_rings[i];
5014
5015 err = niu_init_one_rx_channel(np, rp);
5016 if (err)
5017 return err;
5018 }
5019
5020 return 0;
5021 }
5022
5023 static int niu_set_ip_frag_rule(struct niu *np)
5024 {
5025 struct niu_parent *parent = np->parent;
5026 struct niu_classifier *cp = &np->clas;
5027 struct niu_tcam_entry *tp;
5028 int index, err;
5029
5030 index = cp->tcam_top;
5031 tp = &parent->tcam[index];
5032
5033 /* Note that the noport bit is the same in both ipv4 and
5034 * ipv6 format TCAM entries.
5035 */
5036 memset(tp, 0, sizeof(*tp));
5037 tp->key[1] = TCAM_V4KEY1_NOPORT;
5038 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5039 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5040 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5041 err = tcam_write(np, index, tp->key, tp->key_mask);
5042 if (err)
5043 return err;
5044 err = tcam_assoc_write(np, index, tp->assoc_data);
5045 if (err)
5046 return err;
5047 tp->valid = 1;
5048 cp->tcam_valid_entries++;
5049
5050 return 0;
5051 }
5052
5053 static int niu_init_classifier_hw(struct niu *np)
5054 {
5055 struct niu_parent *parent = np->parent;
5056 struct niu_classifier *cp = &np->clas;
5057 int i, err;
5058
5059 nw64(H1POLY, cp->h1_init);
5060 nw64(H2POLY, cp->h2_init);
5061
5062 err = niu_init_hostinfo(np);
5063 if (err)
5064 return err;
5065
5066 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5067 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5068
5069 vlan_tbl_write(np, i, np->port,
5070 vp->vlan_pref, vp->rdc_num);
5071 }
5072
5073 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5074 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5075
5076 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5077 ap->rdc_num, ap->mac_pref);
5078 if (err)
5079 return err;
5080 }
5081
5082 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5083 int index = i - CLASS_CODE_USER_PROG1;
5084
5085 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5086 if (err)
5087 return err;
5088 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5089 if (err)
5090 return err;
5091 }
5092
5093 err = niu_set_ip_frag_rule(np);
5094 if (err)
5095 return err;
5096
5097 tcam_enable(np, 1);
5098
5099 return 0;
5100 }
5101
5102 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5103 {
5104 nw64(ZCP_RAM_DATA0, data[0]);
5105 nw64(ZCP_RAM_DATA1, data[1]);
5106 nw64(ZCP_RAM_DATA2, data[2]);
5107 nw64(ZCP_RAM_DATA3, data[3]);
5108 nw64(ZCP_RAM_DATA4, data[4]);
5109 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5110 nw64(ZCP_RAM_ACC,
5111 (ZCP_RAM_ACC_WRITE |
5112 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5113 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5114
5115 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5116 1000, 100);
5117 }
5118
5119 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5120 {
5121 int err;
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 busy won't clear, ZCP_RAM_ACC[%llx]\n",
5127 (unsigned long long)nr64(ZCP_RAM_ACC));
5128 return err;
5129 }
5130
5131 nw64(ZCP_RAM_ACC,
5132 (ZCP_RAM_ACC_READ |
5133 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5134 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5135
5136 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5137 1000, 100);
5138 if (err) {
5139 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5140 (unsigned long long)nr64(ZCP_RAM_ACC));
5141 return err;
5142 }
5143
5144 data[0] = nr64(ZCP_RAM_DATA0);
5145 data[1] = nr64(ZCP_RAM_DATA1);
5146 data[2] = nr64(ZCP_RAM_DATA2);
5147 data[3] = nr64(ZCP_RAM_DATA3);
5148 data[4] = nr64(ZCP_RAM_DATA4);
5149
5150 return 0;
5151 }
5152
5153 static void niu_zcp_cfifo_reset(struct niu *np)
5154 {
5155 u64 val = nr64(RESET_CFIFO);
5156
5157 val |= RESET_CFIFO_RST(np->port);
5158 nw64(RESET_CFIFO, val);
5159 udelay(10);
5160
5161 val &= ~RESET_CFIFO_RST(np->port);
5162 nw64(RESET_CFIFO, val);
5163 }
5164
5165 static int niu_init_zcp(struct niu *np)
5166 {
5167 u64 data[5], rbuf[5];
5168 int i, max, err;
5169
5170 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5171 if (np->port == 0 || np->port == 1)
5172 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5173 else
5174 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5175 } else
5176 max = NIU_CFIFO_ENTRIES;
5177
5178 data[0] = 0;
5179 data[1] = 0;
5180 data[2] = 0;
5181 data[3] = 0;
5182 data[4] = 0;
5183
5184 for (i = 0; i < max; i++) {
5185 err = niu_zcp_write(np, i, data);
5186 if (err)
5187 return err;
5188 err = niu_zcp_read(np, i, rbuf);
5189 if (err)
5190 return err;
5191 }
5192
5193 niu_zcp_cfifo_reset(np);
5194 nw64(CFIFO_ECC(np->port), 0);
5195 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5196 (void) nr64(ZCP_INT_STAT);
5197 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5198
5199 return 0;
5200 }
5201
5202 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5203 {
5204 u64 val = nr64_ipp(IPP_CFIG);
5205
5206 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5207 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5208 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5209 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5210 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5211 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5212 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5213 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5214 }
5215
5216 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5217 {
5218 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5219 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5220 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5221 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5222 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5223 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5224 }
5225
5226 static int niu_ipp_reset(struct niu *np)
5227 {
5228 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5229 1000, 100, "IPP_CFIG");
5230 }
5231
5232 static int niu_init_ipp(struct niu *np)
5233 {
5234 u64 data[5], rbuf[5], val;
5235 int i, max, err;
5236
5237 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5238 if (np->port == 0 || np->port == 1)
5239 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5240 else
5241 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5242 } else
5243 max = NIU_DFIFO_ENTRIES;
5244
5245 data[0] = 0;
5246 data[1] = 0;
5247 data[2] = 0;
5248 data[3] = 0;
5249 data[4] = 0;
5250
5251 for (i = 0; i < max; i++) {
5252 niu_ipp_write(np, i, data);
5253 niu_ipp_read(np, i, rbuf);
5254 }
5255
5256 (void) nr64_ipp(IPP_INT_STAT);
5257 (void) nr64_ipp(IPP_INT_STAT);
5258
5259 err = niu_ipp_reset(np);
5260 if (err)
5261 return err;
5262
5263 (void) nr64_ipp(IPP_PKT_DIS);
5264 (void) nr64_ipp(IPP_BAD_CS_CNT);
5265 (void) nr64_ipp(IPP_ECC);
5266
5267 (void) nr64_ipp(IPP_INT_STAT);
5268
5269 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5270
5271 val = nr64_ipp(IPP_CFIG);
5272 val &= ~IPP_CFIG_IP_MAX_PKT;
5273 val |= (IPP_CFIG_IPP_ENABLE |
5274 IPP_CFIG_DFIFO_ECC_EN |
5275 IPP_CFIG_DROP_BAD_CRC |
5276 IPP_CFIG_CKSUM_EN |
5277 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5278 nw64_ipp(IPP_CFIG, val);
5279
5280 return 0;
5281 }
5282
5283 static void niu_handle_led(struct niu *np, int status)
5284 {
5285 u64 val;
5286 val = nr64_mac(XMAC_CONFIG);
5287
5288 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5289 (np->flags & NIU_FLAGS_FIBER) != 0) {
5290 if (status) {
5291 val |= XMAC_CONFIG_LED_POLARITY;
5292 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5293 } else {
5294 val |= XMAC_CONFIG_FORCE_LED_ON;
5295 val &= ~XMAC_CONFIG_LED_POLARITY;
5296 }
5297 }
5298
5299 nw64_mac(XMAC_CONFIG, val);
5300 }
5301
5302 static void niu_init_xif_xmac(struct niu *np)
5303 {
5304 struct niu_link_config *lp = &np->link_config;
5305 u64 val;
5306
5307 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5308 val = nr64(MIF_CONFIG);
5309 val |= MIF_CONFIG_ATCA_GE;
5310 nw64(MIF_CONFIG, val);
5311 }
5312
5313 val = nr64_mac(XMAC_CONFIG);
5314 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5315
5316 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5317
5318 if (lp->loopback_mode == LOOPBACK_MAC) {
5319 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5320 val |= XMAC_CONFIG_LOOPBACK;
5321 } else {
5322 val &= ~XMAC_CONFIG_LOOPBACK;
5323 }
5324
5325 if (np->flags & NIU_FLAGS_10G) {
5326 val &= ~XMAC_CONFIG_LFS_DISABLE;
5327 } else {
5328 val |= XMAC_CONFIG_LFS_DISABLE;
5329 if (!(np->flags & NIU_FLAGS_FIBER) &&
5330 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5331 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5332 else
5333 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5334 }
5335
5336 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5337
5338 if (lp->active_speed == SPEED_100)
5339 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5340 else
5341 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5342
5343 nw64_mac(XMAC_CONFIG, val);
5344
5345 val = nr64_mac(XMAC_CONFIG);
5346 val &= ~XMAC_CONFIG_MODE_MASK;
5347 if (np->flags & NIU_FLAGS_10G) {
5348 val |= XMAC_CONFIG_MODE_XGMII;
5349 } else {
5350 if (lp->active_speed == SPEED_1000)
5351 val |= XMAC_CONFIG_MODE_GMII;
5352 else
5353 val |= XMAC_CONFIG_MODE_MII;
5354 }
5355
5356 nw64_mac(XMAC_CONFIG, val);
5357 }
5358
5359 static void niu_init_xif_bmac(struct niu *np)
5360 {
5361 struct niu_link_config *lp = &np->link_config;
5362 u64 val;
5363
5364 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5365
5366 if (lp->loopback_mode == LOOPBACK_MAC)
5367 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5368 else
5369 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5370
5371 if (lp->active_speed == SPEED_1000)
5372 val |= BMAC_XIF_CONFIG_GMII_MODE;
5373 else
5374 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5375
5376 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5377 BMAC_XIF_CONFIG_LED_POLARITY);
5378
5379 if (!(np->flags & NIU_FLAGS_10G) &&
5380 !(np->flags & NIU_FLAGS_FIBER) &&
5381 lp->active_speed == SPEED_100)
5382 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5383 else
5384 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5385
5386 nw64_mac(BMAC_XIF_CONFIG, val);
5387 }
5388
5389 static void niu_init_xif(struct niu *np)
5390 {
5391 if (np->flags & NIU_FLAGS_XMAC)
5392 niu_init_xif_xmac(np);
5393 else
5394 niu_init_xif_bmac(np);
5395 }
5396
5397 static void niu_pcs_mii_reset(struct niu *np)
5398 {
5399 int limit = 1000;
5400 u64 val = nr64_pcs(PCS_MII_CTL);
5401 val |= PCS_MII_CTL_RST;
5402 nw64_pcs(PCS_MII_CTL, val);
5403 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5404 udelay(100);
5405 val = nr64_pcs(PCS_MII_CTL);
5406 }
5407 }
5408
5409 static void niu_xpcs_reset(struct niu *np)
5410 {
5411 int limit = 1000;
5412 u64 val = nr64_xpcs(XPCS_CONTROL1);
5413 val |= XPCS_CONTROL1_RESET;
5414 nw64_xpcs(XPCS_CONTROL1, val);
5415 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5416 udelay(100);
5417 val = nr64_xpcs(XPCS_CONTROL1);
5418 }
5419 }
5420
5421 static int niu_init_pcs(struct niu *np)
5422 {
5423 struct niu_link_config *lp = &np->link_config;
5424 u64 val;
5425
5426 switch (np->flags & (NIU_FLAGS_10G |
5427 NIU_FLAGS_FIBER |
5428 NIU_FLAGS_XCVR_SERDES)) {
5429 case NIU_FLAGS_FIBER:
5430 /* 1G fiber */
5431 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5432 nw64_pcs(PCS_DPATH_MODE, 0);
5433 niu_pcs_mii_reset(np);
5434 break;
5435
5436 case NIU_FLAGS_10G:
5437 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5438 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5439 /* 10G SERDES */
5440 if (!(np->flags & NIU_FLAGS_XMAC))
5441 return -EINVAL;
5442
5443 /* 10G copper or fiber */
5444 val = nr64_mac(XMAC_CONFIG);
5445 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5446 nw64_mac(XMAC_CONFIG, val);
5447
5448 niu_xpcs_reset(np);
5449
5450 val = nr64_xpcs(XPCS_CONTROL1);
5451 if (lp->loopback_mode == LOOPBACK_PHY)
5452 val |= XPCS_CONTROL1_LOOPBACK;
5453 else
5454 val &= ~XPCS_CONTROL1_LOOPBACK;
5455 nw64_xpcs(XPCS_CONTROL1, val);
5456
5457 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5458 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5459 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5460 break;
5461
5462
5463 case NIU_FLAGS_XCVR_SERDES:
5464 /* 1G SERDES */
5465 niu_pcs_mii_reset(np);
5466 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5467 nw64_pcs(PCS_DPATH_MODE, 0);
5468 break;
5469
5470 case 0:
5471 /* 1G copper */
5472 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5473 /* 1G RGMII FIBER */
5474 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5475 niu_pcs_mii_reset(np);
5476 break;
5477
5478 default:
5479 return -EINVAL;
5480 }
5481
5482 return 0;
5483 }
5484
5485 static int niu_reset_tx_xmac(struct niu *np)
5486 {
5487 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5488 (XTXMAC_SW_RST_REG_RS |
5489 XTXMAC_SW_RST_SOFT_RST),
5490 1000, 100, "XTXMAC_SW_RST");
5491 }
5492
5493 static int niu_reset_tx_bmac(struct niu *np)
5494 {
5495 int limit;
5496
5497 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5498 limit = 1000;
5499 while (--limit >= 0) {
5500 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5501 break;
5502 udelay(100);
5503 }
5504 if (limit < 0) {
5505 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5506 np->port,
5507 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5508 return -ENODEV;
5509 }
5510
5511 return 0;
5512 }
5513
5514 static int niu_reset_tx_mac(struct niu *np)
5515 {
5516 if (np->flags & NIU_FLAGS_XMAC)
5517 return niu_reset_tx_xmac(np);
5518 else
5519 return niu_reset_tx_bmac(np);
5520 }
5521
5522 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5523 {
5524 u64 val;
5525
5526 val = nr64_mac(XMAC_MIN);
5527 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5528 XMAC_MIN_RX_MIN_PKT_SIZE);
5529 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5530 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5531 nw64_mac(XMAC_MIN, val);
5532
5533 nw64_mac(XMAC_MAX, max);
5534
5535 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5536
5537 val = nr64_mac(XMAC_IPG);
5538 if (np->flags & NIU_FLAGS_10G) {
5539 val &= ~XMAC_IPG_IPG_XGMII;
5540 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5541 } else {
5542 val &= ~XMAC_IPG_IPG_MII_GMII;
5543 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5544 }
5545 nw64_mac(XMAC_IPG, val);
5546
5547 val = nr64_mac(XMAC_CONFIG);
5548 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5549 XMAC_CONFIG_STRETCH_MODE |
5550 XMAC_CONFIG_VAR_MIN_IPG_EN |
5551 XMAC_CONFIG_TX_ENABLE);
5552 nw64_mac(XMAC_CONFIG, val);
5553
5554 nw64_mac(TXMAC_FRM_CNT, 0);
5555 nw64_mac(TXMAC_BYTE_CNT, 0);
5556 }
5557
5558 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5559 {
5560 u64 val;
5561
5562 nw64_mac(BMAC_MIN_FRAME, min);
5563 nw64_mac(BMAC_MAX_FRAME, max);
5564
5565 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5566 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5567 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5568
5569 val = nr64_mac(BTXMAC_CONFIG);
5570 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5571 BTXMAC_CONFIG_ENABLE);
5572 nw64_mac(BTXMAC_CONFIG, val);
5573 }
5574
5575 static void niu_init_tx_mac(struct niu *np)
5576 {
5577 u64 min, max;
5578
5579 min = 64;
5580 if (np->dev->mtu > ETH_DATA_LEN)
5581 max = 9216;
5582 else
5583 max = 1522;
5584
5585 /* The XMAC_MIN register only accepts values for TX min which
5586 * have the low 3 bits cleared.
5587 */
5588 BUG_ON(min & 0x7);
5589
5590 if (np->flags & NIU_FLAGS_XMAC)
5591 niu_init_tx_xmac(np, min, max);
5592 else
5593 niu_init_tx_bmac(np, min, max);
5594 }
5595
5596 static int niu_reset_rx_xmac(struct niu *np)
5597 {
5598 int limit;
5599
5600 nw64_mac(XRXMAC_SW_RST,
5601 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5602 limit = 1000;
5603 while (--limit >= 0) {
5604 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5605 XRXMAC_SW_RST_SOFT_RST)))
5606 break;
5607 udelay(100);
5608 }
5609 if (limit < 0) {
5610 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5611 np->port,
5612 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5613 return -ENODEV;
5614 }
5615
5616 return 0;
5617 }
5618
5619 static int niu_reset_rx_bmac(struct niu *np)
5620 {
5621 int limit;
5622
5623 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5624 limit = 1000;
5625 while (--limit >= 0) {
5626 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5627 break;
5628 udelay(100);
5629 }
5630 if (limit < 0) {
5631 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5632 np->port,
5633 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5634 return -ENODEV;
5635 }
5636
5637 return 0;
5638 }
5639
5640 static int niu_reset_rx_mac(struct niu *np)
5641 {
5642 if (np->flags & NIU_FLAGS_XMAC)
5643 return niu_reset_rx_xmac(np);
5644 else
5645 return niu_reset_rx_bmac(np);
5646 }
5647
5648 static void niu_init_rx_xmac(struct niu *np)
5649 {
5650 struct niu_parent *parent = np->parent;
5651 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5652 int first_rdc_table = tp->first_table_num;
5653 unsigned long i;
5654 u64 val;
5655
5656 nw64_mac(XMAC_ADD_FILT0, 0);
5657 nw64_mac(XMAC_ADD_FILT1, 0);
5658 nw64_mac(XMAC_ADD_FILT2, 0);
5659 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5660 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5661 for (i = 0; i < MAC_NUM_HASH; i++)
5662 nw64_mac(XMAC_HASH_TBL(i), 0);
5663 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5664 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5665 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5666
5667 val = nr64_mac(XMAC_CONFIG);
5668 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5669 XMAC_CONFIG_PROMISCUOUS |
5670 XMAC_CONFIG_PROMISC_GROUP |
5671 XMAC_CONFIG_ERR_CHK_DIS |
5672 XMAC_CONFIG_RX_CRC_CHK_DIS |
5673 XMAC_CONFIG_RESERVED_MULTICAST |
5674 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5675 XMAC_CONFIG_ADDR_FILTER_EN |
5676 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5677 XMAC_CONFIG_STRIP_CRC |
5678 XMAC_CONFIG_PASS_FLOW_CTRL |
5679 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5680 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5681 nw64_mac(XMAC_CONFIG, val);
5682
5683 nw64_mac(RXMAC_BT_CNT, 0);
5684 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5685 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5686 nw64_mac(RXMAC_FRAG_CNT, 0);
5687 nw64_mac(RXMAC_HIST_CNT1, 0);
5688 nw64_mac(RXMAC_HIST_CNT2, 0);
5689 nw64_mac(RXMAC_HIST_CNT3, 0);
5690 nw64_mac(RXMAC_HIST_CNT4, 0);
5691 nw64_mac(RXMAC_HIST_CNT5, 0);
5692 nw64_mac(RXMAC_HIST_CNT6, 0);
5693 nw64_mac(RXMAC_HIST_CNT7, 0);
5694 nw64_mac(RXMAC_MPSZER_CNT, 0);
5695 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5696 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5697 nw64_mac(LINK_FAULT_CNT, 0);
5698 }
5699
5700 static void niu_init_rx_bmac(struct niu *np)
5701 {
5702 struct niu_parent *parent = np->parent;
5703 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5704 int first_rdc_table = tp->first_table_num;
5705 unsigned long i;
5706 u64 val;
5707
5708 nw64_mac(BMAC_ADD_FILT0, 0);
5709 nw64_mac(BMAC_ADD_FILT1, 0);
5710 nw64_mac(BMAC_ADD_FILT2, 0);
5711 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5712 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5713 for (i = 0; i < MAC_NUM_HASH; i++)
5714 nw64_mac(BMAC_HASH_TBL(i), 0);
5715 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5716 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5717 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5718
5719 val = nr64_mac(BRXMAC_CONFIG);
5720 val &= ~(BRXMAC_CONFIG_ENABLE |
5721 BRXMAC_CONFIG_STRIP_PAD |
5722 BRXMAC_CONFIG_STRIP_FCS |
5723 BRXMAC_CONFIG_PROMISC |
5724 BRXMAC_CONFIG_PROMISC_GRP |
5725 BRXMAC_CONFIG_ADDR_FILT_EN |
5726 BRXMAC_CONFIG_DISCARD_DIS);
5727 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5728 nw64_mac(BRXMAC_CONFIG, val);
5729
5730 val = nr64_mac(BMAC_ADDR_CMPEN);
5731 val |= BMAC_ADDR_CMPEN_EN0;
5732 nw64_mac(BMAC_ADDR_CMPEN, val);
5733 }
5734
5735 static void niu_init_rx_mac(struct niu *np)
5736 {
5737 niu_set_primary_mac(np, np->dev->dev_addr);
5738
5739 if (np->flags & NIU_FLAGS_XMAC)
5740 niu_init_rx_xmac(np);
5741 else
5742 niu_init_rx_bmac(np);
5743 }
5744
5745 static void niu_enable_tx_xmac(struct niu *np, int on)
5746 {
5747 u64 val = nr64_mac(XMAC_CONFIG);
5748
5749 if (on)
5750 val |= XMAC_CONFIG_TX_ENABLE;
5751 else
5752 val &= ~XMAC_CONFIG_TX_ENABLE;
5753 nw64_mac(XMAC_CONFIG, val);
5754 }
5755
5756 static void niu_enable_tx_bmac(struct niu *np, int on)
5757 {
5758 u64 val = nr64_mac(BTXMAC_CONFIG);
5759
5760 if (on)
5761 val |= BTXMAC_CONFIG_ENABLE;
5762 else
5763 val &= ~BTXMAC_CONFIG_ENABLE;
5764 nw64_mac(BTXMAC_CONFIG, val);
5765 }
5766
5767 static void niu_enable_tx_mac(struct niu *np, int on)
5768 {
5769 if (np->flags & NIU_FLAGS_XMAC)
5770 niu_enable_tx_xmac(np, on);
5771 else
5772 niu_enable_tx_bmac(np, on);
5773 }
5774
5775 static void niu_enable_rx_xmac(struct niu *np, int on)
5776 {
5777 u64 val = nr64_mac(XMAC_CONFIG);
5778
5779 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5780 XMAC_CONFIG_PROMISCUOUS);
5781
5782 if (np->flags & NIU_FLAGS_MCAST)
5783 val |= XMAC_CONFIG_HASH_FILTER_EN;
5784 if (np->flags & NIU_FLAGS_PROMISC)
5785 val |= XMAC_CONFIG_PROMISCUOUS;
5786
5787 if (on)
5788 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5789 else
5790 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5791 nw64_mac(XMAC_CONFIG, val);
5792 }
5793
5794 static void niu_enable_rx_bmac(struct niu *np, int on)
5795 {
5796 u64 val = nr64_mac(BRXMAC_CONFIG);
5797
5798 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5799 BRXMAC_CONFIG_PROMISC);
5800
5801 if (np->flags & NIU_FLAGS_MCAST)
5802 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5803 if (np->flags & NIU_FLAGS_PROMISC)
5804 val |= BRXMAC_CONFIG_PROMISC;
5805
5806 if (on)
5807 val |= BRXMAC_CONFIG_ENABLE;
5808 else
5809 val &= ~BRXMAC_CONFIG_ENABLE;
5810 nw64_mac(BRXMAC_CONFIG, val);
5811 }
5812
5813 static void niu_enable_rx_mac(struct niu *np, int on)
5814 {
5815 if (np->flags & NIU_FLAGS_XMAC)
5816 niu_enable_rx_xmac(np, on);
5817 else
5818 niu_enable_rx_bmac(np, on);
5819 }
5820
5821 static int niu_init_mac(struct niu *np)
5822 {
5823 int err;
5824
5825 niu_init_xif(np);
5826 err = niu_init_pcs(np);
5827 if (err)
5828 return err;
5829
5830 err = niu_reset_tx_mac(np);
5831 if (err)
5832 return err;
5833 niu_init_tx_mac(np);
5834 err = niu_reset_rx_mac(np);
5835 if (err)
5836 return err;
5837 niu_init_rx_mac(np);
5838
5839 /* This looks hookey but the RX MAC reset we just did will
5840 * undo some of the state we setup in niu_init_tx_mac() so we
5841 * have to call it again. In particular, the RX MAC reset will
5842 * set the XMAC_MAX register back to it's default value.
5843 */
5844 niu_init_tx_mac(np);
5845 niu_enable_tx_mac(np, 1);
5846
5847 niu_enable_rx_mac(np, 1);
5848
5849 return 0;
5850 }
5851
5852 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5853 {
5854 (void) niu_tx_channel_stop(np, rp->tx_channel);
5855 }
5856
5857 static void niu_stop_tx_channels(struct niu *np)
5858 {
5859 int i;
5860
5861 for (i = 0; i < np->num_tx_rings; i++) {
5862 struct tx_ring_info *rp = &np->tx_rings[i];
5863
5864 niu_stop_one_tx_channel(np, rp);
5865 }
5866 }
5867
5868 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5869 {
5870 (void) niu_tx_channel_reset(np, rp->tx_channel);
5871 }
5872
5873 static void niu_reset_tx_channels(struct niu *np)
5874 {
5875 int i;
5876
5877 for (i = 0; i < np->num_tx_rings; i++) {
5878 struct tx_ring_info *rp = &np->tx_rings[i];
5879
5880 niu_reset_one_tx_channel(np, rp);
5881 }
5882 }
5883
5884 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5885 {
5886 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5887 }
5888
5889 static void niu_stop_rx_channels(struct niu *np)
5890 {
5891 int i;
5892
5893 for (i = 0; i < np->num_rx_rings; i++) {
5894 struct rx_ring_info *rp = &np->rx_rings[i];
5895
5896 niu_stop_one_rx_channel(np, rp);
5897 }
5898 }
5899
5900 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5901 {
5902 int channel = rp->rx_channel;
5903
5904 (void) niu_rx_channel_reset(np, channel);
5905 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5906 nw64(RX_DMA_CTL_STAT(channel), 0);
5907 (void) niu_enable_rx_channel(np, channel, 0);
5908 }
5909
5910 static void niu_reset_rx_channels(struct niu *np)
5911 {
5912 int i;
5913
5914 for (i = 0; i < np->num_rx_rings; i++) {
5915 struct rx_ring_info *rp = &np->rx_rings[i];
5916
5917 niu_reset_one_rx_channel(np, rp);
5918 }
5919 }
5920
5921 static void niu_disable_ipp(struct niu *np)
5922 {
5923 u64 rd, wr, val;
5924 int limit;
5925
5926 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5927 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5928 limit = 100;
5929 while (--limit >= 0 && (rd != wr)) {
5930 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5931 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5932 }
5933 if (limit < 0 &&
5934 (rd != 0 && wr != 1)) {
5935 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5936 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5937 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5938 }
5939
5940 val = nr64_ipp(IPP_CFIG);
5941 val &= ~(IPP_CFIG_IPP_ENABLE |
5942 IPP_CFIG_DFIFO_ECC_EN |
5943 IPP_CFIG_DROP_BAD_CRC |
5944 IPP_CFIG_CKSUM_EN);
5945 nw64_ipp(IPP_CFIG, val);
5946
5947 (void) niu_ipp_reset(np);
5948 }
5949
5950 static int niu_init_hw(struct niu *np)
5951 {
5952 int i, err;
5953
5954 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5955 niu_txc_enable_port(np, 1);
5956 niu_txc_port_dma_enable(np, 1);
5957 niu_txc_set_imask(np, 0);
5958
5959 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5960 for (i = 0; i < np->num_tx_rings; i++) {
5961 struct tx_ring_info *rp = &np->tx_rings[i];
5962
5963 err = niu_init_one_tx_channel(np, rp);
5964 if (err)
5965 return err;
5966 }
5967
5968 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5969 err = niu_init_rx_channels(np);
5970 if (err)
5971 goto out_uninit_tx_channels;
5972
5973 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5974 err = niu_init_classifier_hw(np);
5975 if (err)
5976 goto out_uninit_rx_channels;
5977
5978 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5979 err = niu_init_zcp(np);
5980 if (err)
5981 goto out_uninit_rx_channels;
5982
5983 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5984 err = niu_init_ipp(np);
5985 if (err)
5986 goto out_uninit_rx_channels;
5987
5988 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5989 err = niu_init_mac(np);
5990 if (err)
5991 goto out_uninit_ipp;
5992
5993 return 0;
5994
5995 out_uninit_ipp:
5996 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5997 niu_disable_ipp(np);
5998
5999 out_uninit_rx_channels:
6000 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
6001 niu_stop_rx_channels(np);
6002 niu_reset_rx_channels(np);
6003
6004 out_uninit_tx_channels:
6005 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
6006 niu_stop_tx_channels(np);
6007 niu_reset_tx_channels(np);
6008
6009 return err;
6010 }
6011
6012 static void niu_stop_hw(struct niu *np)
6013 {
6014 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6015 niu_enable_interrupts(np, 0);
6016
6017 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6018 niu_enable_rx_mac(np, 0);
6019
6020 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6021 niu_disable_ipp(np);
6022
6023 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6024 niu_stop_tx_channels(np);
6025
6026 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6027 niu_stop_rx_channels(np);
6028
6029 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6030 niu_reset_tx_channels(np);
6031
6032 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6033 niu_reset_rx_channels(np);
6034 }
6035
6036 static void niu_set_irq_name(struct niu *np)
6037 {
6038 int port = np->port;
6039 int i, j = 1;
6040
6041 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6042
6043 if (port == 0) {
6044 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6045 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6046 j = 3;
6047 }
6048
6049 for (i = 0; i < np->num_ldg - j; i++) {
6050 if (i < np->num_rx_rings)
6051 sprintf(np->irq_name[i+j], "%s-rx-%d",
6052 np->dev->name, i);
6053 else if (i < np->num_tx_rings + np->num_rx_rings)
6054 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6055 i - np->num_rx_rings);
6056 }
6057 }
6058
6059 static int niu_request_irq(struct niu *np)
6060 {
6061 int i, j, err;
6062
6063 niu_set_irq_name(np);
6064
6065 err = 0;
6066 for (i = 0; i < np->num_ldg; i++) {
6067 struct niu_ldg *lp = &np->ldg[i];
6068
6069 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6070 np->irq_name[i], lp);
6071 if (err)
6072 goto out_free_irqs;
6073
6074 }
6075
6076 return 0;
6077
6078 out_free_irqs:
6079 for (j = 0; j < i; j++) {
6080 struct niu_ldg *lp = &np->ldg[j];
6081
6082 free_irq(lp->irq, lp);
6083 }
6084 return err;
6085 }
6086
6087 static void niu_free_irq(struct niu *np)
6088 {
6089 int i;
6090
6091 for (i = 0; i < np->num_ldg; i++) {
6092 struct niu_ldg *lp = &np->ldg[i];
6093
6094 free_irq(lp->irq, lp);
6095 }
6096 }
6097
6098 static void niu_enable_napi(struct niu *np)
6099 {
6100 int i;
6101
6102 for (i = 0; i < np->num_ldg; i++)
6103 napi_enable(&np->ldg[i].napi);
6104 }
6105
6106 static void niu_disable_napi(struct niu *np)
6107 {
6108 int i;
6109
6110 for (i = 0; i < np->num_ldg; i++)
6111 napi_disable(&np->ldg[i].napi);
6112 }
6113
6114 static int niu_open(struct net_device *dev)
6115 {
6116 struct niu *np = netdev_priv(dev);
6117 int err;
6118
6119 netif_carrier_off(dev);
6120
6121 err = niu_alloc_channels(np);
6122 if (err)
6123 goto out_err;
6124
6125 err = niu_enable_interrupts(np, 0);
6126 if (err)
6127 goto out_free_channels;
6128
6129 err = niu_request_irq(np);
6130 if (err)
6131 goto out_free_channels;
6132
6133 niu_enable_napi(np);
6134
6135 spin_lock_irq(&np->lock);
6136
6137 err = niu_init_hw(np);
6138 if (!err) {
6139 init_timer(&np->timer);
6140 np->timer.expires = jiffies + HZ;
6141 np->timer.data = (unsigned long) np;
6142 np->timer.function = niu_timer;
6143
6144 err = niu_enable_interrupts(np, 1);
6145 if (err)
6146 niu_stop_hw(np);
6147 }
6148
6149 spin_unlock_irq(&np->lock);
6150
6151 if (err) {
6152 niu_disable_napi(np);
6153 goto out_free_irq;
6154 }
6155
6156 netif_tx_start_all_queues(dev);
6157
6158 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6159 netif_carrier_on(dev);
6160
6161 add_timer(&np->timer);
6162
6163 return 0;
6164
6165 out_free_irq:
6166 niu_free_irq(np);
6167
6168 out_free_channels:
6169 niu_free_channels(np);
6170
6171 out_err:
6172 return err;
6173 }
6174
6175 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6176 {
6177 cancel_work_sync(&np->reset_task);
6178
6179 niu_disable_napi(np);
6180 netif_tx_stop_all_queues(dev);
6181
6182 del_timer_sync(&np->timer);
6183
6184 spin_lock_irq(&np->lock);
6185
6186 niu_stop_hw(np);
6187
6188 spin_unlock_irq(&np->lock);
6189 }
6190
6191 static int niu_close(struct net_device *dev)
6192 {
6193 struct niu *np = netdev_priv(dev);
6194
6195 niu_full_shutdown(np, dev);
6196
6197 niu_free_irq(np);
6198
6199 niu_free_channels(np);
6200
6201 niu_handle_led(np, 0);
6202
6203 return 0;
6204 }
6205
6206 static void niu_sync_xmac_stats(struct niu *np)
6207 {
6208 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6209
6210 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6211 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6212
6213 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6214 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6215 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6216 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6217 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6218 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6219 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6220 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6221 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6222 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6223 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6224 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6225 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6226 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6227 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6228 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6229 }
6230
6231 static void niu_sync_bmac_stats(struct niu *np)
6232 {
6233 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6234
6235 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6236 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6237
6238 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6239 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6240 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6241 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6242 }
6243
6244 static void niu_sync_mac_stats(struct niu *np)
6245 {
6246 if (np->flags & NIU_FLAGS_XMAC)
6247 niu_sync_xmac_stats(np);
6248 else
6249 niu_sync_bmac_stats(np);
6250 }
6251
6252 static void niu_get_rx_stats(struct niu *np,
6253 struct rtnl_link_stats64 *stats)
6254 {
6255 u64 pkts, dropped, errors, bytes;
6256 struct rx_ring_info *rx_rings;
6257 int i;
6258
6259 pkts = dropped = errors = bytes = 0;
6260
6261 rx_rings = ACCESS_ONCE(np->rx_rings);
6262 if (!rx_rings)
6263 goto no_rings;
6264
6265 for (i = 0; i < np->num_rx_rings; i++) {
6266 struct rx_ring_info *rp = &rx_rings[i];
6267
6268 niu_sync_rx_discard_stats(np, rp, 0);
6269
6270 pkts += rp->rx_packets;
6271 bytes += rp->rx_bytes;
6272 dropped += rp->rx_dropped;
6273 errors += rp->rx_errors;
6274 }
6275
6276 no_rings:
6277 stats->rx_packets = pkts;
6278 stats->rx_bytes = bytes;
6279 stats->rx_dropped = dropped;
6280 stats->rx_errors = errors;
6281 }
6282
6283 static void niu_get_tx_stats(struct niu *np,
6284 struct rtnl_link_stats64 *stats)
6285 {
6286 u64 pkts, errors, bytes;
6287 struct tx_ring_info *tx_rings;
6288 int i;
6289
6290 pkts = errors = bytes = 0;
6291
6292 tx_rings = ACCESS_ONCE(np->tx_rings);
6293 if (!tx_rings)
6294 goto no_rings;
6295
6296 for (i = 0; i < np->num_tx_rings; i++) {
6297 struct tx_ring_info *rp = &tx_rings[i];
6298
6299 pkts += rp->tx_packets;
6300 bytes += rp->tx_bytes;
6301 errors += rp->tx_errors;
6302 }
6303
6304 no_rings:
6305 stats->tx_packets = pkts;
6306 stats->tx_bytes = bytes;
6307 stats->tx_errors = errors;
6308 }
6309
6310 static struct rtnl_link_stats64 *niu_get_stats(struct net_device *dev,
6311 struct rtnl_link_stats64 *stats)
6312 {
6313 struct niu *np = netdev_priv(dev);
6314
6315 if (netif_running(dev)) {
6316 niu_get_rx_stats(np, stats);
6317 niu_get_tx_stats(np, stats);
6318 }
6319
6320 return stats;
6321 }
6322
6323 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6324 {
6325 int i;
6326
6327 for (i = 0; i < 16; i++)
6328 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6329 }
6330
6331 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6332 {
6333 int i;
6334
6335 for (i = 0; i < 16; i++)
6336 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6337 }
6338
6339 static void niu_load_hash(struct niu *np, u16 *hash)
6340 {
6341 if (np->flags & NIU_FLAGS_XMAC)
6342 niu_load_hash_xmac(np, hash);
6343 else
6344 niu_load_hash_bmac(np, hash);
6345 }
6346
6347 static void niu_set_rx_mode(struct net_device *dev)
6348 {
6349 struct niu *np = netdev_priv(dev);
6350 int i, alt_cnt, err;
6351 struct netdev_hw_addr *ha;
6352 unsigned long flags;
6353 u16 hash[16] = { 0, };
6354
6355 spin_lock_irqsave(&np->lock, flags);
6356 niu_enable_rx_mac(np, 0);
6357
6358 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6359 if (dev->flags & IFF_PROMISC)
6360 np->flags |= NIU_FLAGS_PROMISC;
6361 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6362 np->flags |= NIU_FLAGS_MCAST;
6363
6364 alt_cnt = netdev_uc_count(dev);
6365 if (alt_cnt > niu_num_alt_addr(np)) {
6366 alt_cnt = 0;
6367 np->flags |= NIU_FLAGS_PROMISC;
6368 }
6369
6370 if (alt_cnt) {
6371 int index = 0;
6372
6373 netdev_for_each_uc_addr(ha, dev) {
6374 err = niu_set_alt_mac(np, index, ha->addr);
6375 if (err)
6376 netdev_warn(dev, "Error %d adding alt mac %d\n",
6377 err, index);
6378 err = niu_enable_alt_mac(np, index, 1);
6379 if (err)
6380 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6381 err, index);
6382
6383 index++;
6384 }
6385 } else {
6386 int alt_start;
6387 if (np->flags & NIU_FLAGS_XMAC)
6388 alt_start = 0;
6389 else
6390 alt_start = 1;
6391 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6392 err = niu_enable_alt_mac(np, i, 0);
6393 if (err)
6394 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6395 err, i);
6396 }
6397 }
6398 if (dev->flags & IFF_ALLMULTI) {
6399 for (i = 0; i < 16; i++)
6400 hash[i] = 0xffff;
6401 } else if (!netdev_mc_empty(dev)) {
6402 netdev_for_each_mc_addr(ha, dev) {
6403 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6404
6405 crc >>= 24;
6406 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6407 }
6408 }
6409
6410 if (np->flags & NIU_FLAGS_MCAST)
6411 niu_load_hash(np, hash);
6412
6413 niu_enable_rx_mac(np, 1);
6414 spin_unlock_irqrestore(&np->lock, flags);
6415 }
6416
6417 static int niu_set_mac_addr(struct net_device *dev, void *p)
6418 {
6419 struct niu *np = netdev_priv(dev);
6420 struct sockaddr *addr = p;
6421 unsigned long flags;
6422
6423 if (!is_valid_ether_addr(addr->sa_data))
6424 return -EINVAL;
6425
6426 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6427
6428 if (!netif_running(dev))
6429 return 0;
6430
6431 spin_lock_irqsave(&np->lock, flags);
6432 niu_enable_rx_mac(np, 0);
6433 niu_set_primary_mac(np, dev->dev_addr);
6434 niu_enable_rx_mac(np, 1);
6435 spin_unlock_irqrestore(&np->lock, flags);
6436
6437 return 0;
6438 }
6439
6440 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6441 {
6442 return -EOPNOTSUPP;
6443 }
6444
6445 static void niu_netif_stop(struct niu *np)
6446 {
6447 np->dev->trans_start = jiffies; /* prevent tx timeout */
6448
6449 niu_disable_napi(np);
6450
6451 netif_tx_disable(np->dev);
6452 }
6453
6454 static void niu_netif_start(struct niu *np)
6455 {
6456 /* NOTE: unconditional netif_wake_queue is only appropriate
6457 * so long as all callers are assured to have free tx slots
6458 * (such as after niu_init_hw).
6459 */
6460 netif_tx_wake_all_queues(np->dev);
6461
6462 niu_enable_napi(np);
6463
6464 niu_enable_interrupts(np, 1);
6465 }
6466
6467 static void niu_reset_buffers(struct niu *np)
6468 {
6469 int i, j, k, err;
6470
6471 if (np->rx_rings) {
6472 for (i = 0; i < np->num_rx_rings; i++) {
6473 struct rx_ring_info *rp = &np->rx_rings[i];
6474
6475 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6476 struct page *page;
6477
6478 page = rp->rxhash[j];
6479 while (page) {
6480 struct page *next =
6481 (struct page *) page->mapping;
6482 u64 base = page->index;
6483 base = base >> RBR_DESCR_ADDR_SHIFT;
6484 rp->rbr[k++] = cpu_to_le32(base);
6485 page = next;
6486 }
6487 }
6488 for (; k < MAX_RBR_RING_SIZE; k++) {
6489 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6490 if (unlikely(err))
6491 break;
6492 }
6493
6494 rp->rbr_index = rp->rbr_table_size - 1;
6495 rp->rcr_index = 0;
6496 rp->rbr_pending = 0;
6497 rp->rbr_refill_pending = 0;
6498 }
6499 }
6500 if (np->tx_rings) {
6501 for (i = 0; i < np->num_tx_rings; i++) {
6502 struct tx_ring_info *rp = &np->tx_rings[i];
6503
6504 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6505 if (rp->tx_buffs[j].skb)
6506 (void) release_tx_packet(np, rp, j);
6507 }
6508
6509 rp->pending = MAX_TX_RING_SIZE;
6510 rp->prod = 0;
6511 rp->cons = 0;
6512 rp->wrap_bit = 0;
6513 }
6514 }
6515 }
6516
6517 static void niu_reset_task(struct work_struct *work)
6518 {
6519 struct niu *np = container_of(work, struct niu, reset_task);
6520 unsigned long flags;
6521 int err;
6522
6523 spin_lock_irqsave(&np->lock, flags);
6524 if (!netif_running(np->dev)) {
6525 spin_unlock_irqrestore(&np->lock, flags);
6526 return;
6527 }
6528
6529 spin_unlock_irqrestore(&np->lock, flags);
6530
6531 del_timer_sync(&np->timer);
6532
6533 niu_netif_stop(np);
6534
6535 spin_lock_irqsave(&np->lock, flags);
6536
6537 niu_stop_hw(np);
6538
6539 spin_unlock_irqrestore(&np->lock, flags);
6540
6541 niu_reset_buffers(np);
6542
6543 spin_lock_irqsave(&np->lock, flags);
6544
6545 err = niu_init_hw(np);
6546 if (!err) {
6547 np->timer.expires = jiffies + HZ;
6548 add_timer(&np->timer);
6549 niu_netif_start(np);
6550 }
6551
6552 spin_unlock_irqrestore(&np->lock, flags);
6553 }
6554
6555 static void niu_tx_timeout(struct net_device *dev)
6556 {
6557 struct niu *np = netdev_priv(dev);
6558
6559 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6560 dev->name);
6561
6562 schedule_work(&np->reset_task);
6563 }
6564
6565 static void niu_set_txd(struct tx_ring_info *rp, int index,
6566 u64 mapping, u64 len, u64 mark,
6567 u64 n_frags)
6568 {
6569 __le64 *desc = &rp->descr[index];
6570
6571 *desc = cpu_to_le64(mark |
6572 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6573 (len << TX_DESC_TR_LEN_SHIFT) |
6574 (mapping & TX_DESC_SAD));
6575 }
6576
6577 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6578 u64 pad_bytes, u64 len)
6579 {
6580 u16 eth_proto, eth_proto_inner;
6581 u64 csum_bits, l3off, ihl, ret;
6582 u8 ip_proto;
6583 int ipv6;
6584
6585 eth_proto = be16_to_cpu(ehdr->h_proto);
6586 eth_proto_inner = eth_proto;
6587 if (eth_proto == ETH_P_8021Q) {
6588 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6589 __be16 val = vp->h_vlan_encapsulated_proto;
6590
6591 eth_proto_inner = be16_to_cpu(val);
6592 }
6593
6594 ipv6 = ihl = 0;
6595 switch (skb->protocol) {
6596 case cpu_to_be16(ETH_P_IP):
6597 ip_proto = ip_hdr(skb)->protocol;
6598 ihl = ip_hdr(skb)->ihl;
6599 break;
6600 case cpu_to_be16(ETH_P_IPV6):
6601 ip_proto = ipv6_hdr(skb)->nexthdr;
6602 ihl = (40 >> 2);
6603 ipv6 = 1;
6604 break;
6605 default:
6606 ip_proto = ihl = 0;
6607 break;
6608 }
6609
6610 csum_bits = TXHDR_CSUM_NONE;
6611 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6612 u64 start, stuff;
6613
6614 csum_bits = (ip_proto == IPPROTO_TCP ?
6615 TXHDR_CSUM_TCP :
6616 (ip_proto == IPPROTO_UDP ?
6617 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6618
6619 start = skb_checksum_start_offset(skb) -
6620 (pad_bytes + sizeof(struct tx_pkt_hdr));
6621 stuff = start + skb->csum_offset;
6622
6623 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6624 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6625 }
6626
6627 l3off = skb_network_offset(skb) -
6628 (pad_bytes + sizeof(struct tx_pkt_hdr));
6629
6630 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6631 (len << TXHDR_LEN_SHIFT) |
6632 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6633 (ihl << TXHDR_IHL_SHIFT) |
6634 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6635 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6636 (ipv6 ? TXHDR_IP_VER : 0) |
6637 csum_bits);
6638
6639 return ret;
6640 }
6641
6642 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6643 struct net_device *dev)
6644 {
6645 struct niu *np = netdev_priv(dev);
6646 unsigned long align, headroom;
6647 struct netdev_queue *txq;
6648 struct tx_ring_info *rp;
6649 struct tx_pkt_hdr *tp;
6650 unsigned int len, nfg;
6651 struct ethhdr *ehdr;
6652 int prod, i, tlen;
6653 u64 mapping, mrk;
6654
6655 i = skb_get_queue_mapping(skb);
6656 rp = &np->tx_rings[i];
6657 txq = netdev_get_tx_queue(dev, i);
6658
6659 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6660 netif_tx_stop_queue(txq);
6661 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6662 rp->tx_errors++;
6663 return NETDEV_TX_BUSY;
6664 }
6665
6666 if (skb->len < ETH_ZLEN) {
6667 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6668
6669 if (skb_pad(skb, pad_bytes))
6670 goto out;
6671 skb_put(skb, pad_bytes);
6672 }
6673
6674 len = sizeof(struct tx_pkt_hdr) + 15;
6675 if (skb_headroom(skb) < len) {
6676 struct sk_buff *skb_new;
6677
6678 skb_new = skb_realloc_headroom(skb, len);
6679 if (!skb_new) {
6680 rp->tx_errors++;
6681 goto out_drop;
6682 }
6683 kfree_skb(skb);
6684 skb = skb_new;
6685 } else
6686 skb_orphan(skb);
6687
6688 align = ((unsigned long) skb->data & (16 - 1));
6689 headroom = align + sizeof(struct tx_pkt_hdr);
6690
6691 ehdr = (struct ethhdr *) skb->data;
6692 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6693
6694 len = skb->len - sizeof(struct tx_pkt_hdr);
6695 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6696 tp->resv = 0;
6697
6698 len = skb_headlen(skb);
6699 mapping = np->ops->map_single(np->device, skb->data,
6700 len, DMA_TO_DEVICE);
6701
6702 prod = rp->prod;
6703
6704 rp->tx_buffs[prod].skb = skb;
6705 rp->tx_buffs[prod].mapping = mapping;
6706
6707 mrk = TX_DESC_SOP;
6708 if (++rp->mark_counter == rp->mark_freq) {
6709 rp->mark_counter = 0;
6710 mrk |= TX_DESC_MARK;
6711 rp->mark_pending++;
6712 }
6713
6714 tlen = len;
6715 nfg = skb_shinfo(skb)->nr_frags;
6716 while (tlen > 0) {
6717 tlen -= MAX_TX_DESC_LEN;
6718 nfg++;
6719 }
6720
6721 while (len > 0) {
6722 unsigned int this_len = len;
6723
6724 if (this_len > MAX_TX_DESC_LEN)
6725 this_len = MAX_TX_DESC_LEN;
6726
6727 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6728 mrk = nfg = 0;
6729
6730 prod = NEXT_TX(rp, prod);
6731 mapping += this_len;
6732 len -= this_len;
6733 }
6734
6735 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6736 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6737
6738 len = frag->size;
6739 mapping = np->ops->map_page(np->device, frag->page,
6740 frag->page_offset, len,
6741 DMA_TO_DEVICE);
6742
6743 rp->tx_buffs[prod].skb = NULL;
6744 rp->tx_buffs[prod].mapping = mapping;
6745
6746 niu_set_txd(rp, prod, mapping, len, 0, 0);
6747
6748 prod = NEXT_TX(rp, prod);
6749 }
6750
6751 if (prod < rp->prod)
6752 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6753 rp->prod = prod;
6754
6755 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6756
6757 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6758 netif_tx_stop_queue(txq);
6759 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6760 netif_tx_wake_queue(txq);
6761 }
6762
6763 out:
6764 return NETDEV_TX_OK;
6765
6766 out_drop:
6767 rp->tx_errors++;
6768 kfree_skb(skb);
6769 goto out;
6770 }
6771
6772 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6773 {
6774 struct niu *np = netdev_priv(dev);
6775 int err, orig_jumbo, new_jumbo;
6776
6777 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6778 return -EINVAL;
6779
6780 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6781 new_jumbo = (new_mtu > ETH_DATA_LEN);
6782
6783 dev->mtu = new_mtu;
6784
6785 if (!netif_running(dev) ||
6786 (orig_jumbo == new_jumbo))
6787 return 0;
6788
6789 niu_full_shutdown(np, dev);
6790
6791 niu_free_channels(np);
6792
6793 niu_enable_napi(np);
6794
6795 err = niu_alloc_channels(np);
6796 if (err)
6797 return err;
6798
6799 spin_lock_irq(&np->lock);
6800
6801 err = niu_init_hw(np);
6802 if (!err) {
6803 init_timer(&np->timer);
6804 np->timer.expires = jiffies + HZ;
6805 np->timer.data = (unsigned long) np;
6806 np->timer.function = niu_timer;
6807
6808 err = niu_enable_interrupts(np, 1);
6809 if (err)
6810 niu_stop_hw(np);
6811 }
6812
6813 spin_unlock_irq(&np->lock);
6814
6815 if (!err) {
6816 netif_tx_start_all_queues(dev);
6817 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6818 netif_carrier_on(dev);
6819
6820 add_timer(&np->timer);
6821 }
6822
6823 return err;
6824 }
6825
6826 static void niu_get_drvinfo(struct net_device *dev,
6827 struct ethtool_drvinfo *info)
6828 {
6829 struct niu *np = netdev_priv(dev);
6830 struct niu_vpd *vpd = &np->vpd;
6831
6832 strcpy(info->driver, DRV_MODULE_NAME);
6833 strcpy(info->version, DRV_MODULE_VERSION);
6834 sprintf(info->fw_version, "%d.%d",
6835 vpd->fcode_major, vpd->fcode_minor);
6836 if (np->parent->plat_type != PLAT_TYPE_NIU)
6837 strcpy(info->bus_info, pci_name(np->pdev));
6838 }
6839
6840 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6841 {
6842 struct niu *np = netdev_priv(dev);
6843 struct niu_link_config *lp;
6844
6845 lp = &np->link_config;
6846
6847 memset(cmd, 0, sizeof(*cmd));
6848 cmd->phy_address = np->phy_addr;
6849 cmd->supported = lp->supported;
6850 cmd->advertising = lp->active_advertising;
6851 cmd->autoneg = lp->active_autoneg;
6852 ethtool_cmd_speed_set(cmd, lp->active_speed);
6853 cmd->duplex = lp->active_duplex;
6854 cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6855 cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6856 XCVR_EXTERNAL : XCVR_INTERNAL;
6857
6858 return 0;
6859 }
6860
6861 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6862 {
6863 struct niu *np = netdev_priv(dev);
6864 struct niu_link_config *lp = &np->link_config;
6865
6866 lp->advertising = cmd->advertising;
6867 lp->speed = ethtool_cmd_speed(cmd);
6868 lp->duplex = cmd->duplex;
6869 lp->autoneg = cmd->autoneg;
6870 return niu_init_link(np);
6871 }
6872
6873 static u32 niu_get_msglevel(struct net_device *dev)
6874 {
6875 struct niu *np = netdev_priv(dev);
6876 return np->msg_enable;
6877 }
6878
6879 static void niu_set_msglevel(struct net_device *dev, u32 value)
6880 {
6881 struct niu *np = netdev_priv(dev);
6882 np->msg_enable = value;
6883 }
6884
6885 static int niu_nway_reset(struct net_device *dev)
6886 {
6887 struct niu *np = netdev_priv(dev);
6888
6889 if (np->link_config.autoneg)
6890 return niu_init_link(np);
6891
6892 return 0;
6893 }
6894
6895 static int niu_get_eeprom_len(struct net_device *dev)
6896 {
6897 struct niu *np = netdev_priv(dev);
6898
6899 return np->eeprom_len;
6900 }
6901
6902 static int niu_get_eeprom(struct net_device *dev,
6903 struct ethtool_eeprom *eeprom, u8 *data)
6904 {
6905 struct niu *np = netdev_priv(dev);
6906 u32 offset, len, val;
6907
6908 offset = eeprom->offset;
6909 len = eeprom->len;
6910
6911 if (offset + len < offset)
6912 return -EINVAL;
6913 if (offset >= np->eeprom_len)
6914 return -EINVAL;
6915 if (offset + len > np->eeprom_len)
6916 len = eeprom->len = np->eeprom_len - offset;
6917
6918 if (offset & 3) {
6919 u32 b_offset, b_count;
6920
6921 b_offset = offset & 3;
6922 b_count = 4 - b_offset;
6923 if (b_count > len)
6924 b_count = len;
6925
6926 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6927 memcpy(data, ((char *)&val) + b_offset, b_count);
6928 data += b_count;
6929 len -= b_count;
6930 offset += b_count;
6931 }
6932 while (len >= 4) {
6933 val = nr64(ESPC_NCR(offset / 4));
6934 memcpy(data, &val, 4);
6935 data += 4;
6936 len -= 4;
6937 offset += 4;
6938 }
6939 if (len) {
6940 val = nr64(ESPC_NCR(offset / 4));
6941 memcpy(data, &val, len);
6942 }
6943 return 0;
6944 }
6945
6946 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6947 {
6948 switch (flow_type) {
6949 case TCP_V4_FLOW:
6950 case TCP_V6_FLOW:
6951 *pid = IPPROTO_TCP;
6952 break;
6953 case UDP_V4_FLOW:
6954 case UDP_V6_FLOW:
6955 *pid = IPPROTO_UDP;
6956 break;
6957 case SCTP_V4_FLOW:
6958 case SCTP_V6_FLOW:
6959 *pid = IPPROTO_SCTP;
6960 break;
6961 case AH_V4_FLOW:
6962 case AH_V6_FLOW:
6963 *pid = IPPROTO_AH;
6964 break;
6965 case ESP_V4_FLOW:
6966 case ESP_V6_FLOW:
6967 *pid = IPPROTO_ESP;
6968 break;
6969 default:
6970 *pid = 0;
6971 break;
6972 }
6973 }
6974
6975 static int niu_class_to_ethflow(u64 class, int *flow_type)
6976 {
6977 switch (class) {
6978 case CLASS_CODE_TCP_IPV4:
6979 *flow_type = TCP_V4_FLOW;
6980 break;
6981 case CLASS_CODE_UDP_IPV4:
6982 *flow_type = UDP_V4_FLOW;
6983 break;
6984 case CLASS_CODE_AH_ESP_IPV4:
6985 *flow_type = AH_V4_FLOW;
6986 break;
6987 case CLASS_CODE_SCTP_IPV4:
6988 *flow_type = SCTP_V4_FLOW;
6989 break;
6990 case CLASS_CODE_TCP_IPV6:
6991 *flow_type = TCP_V6_FLOW;
6992 break;
6993 case CLASS_CODE_UDP_IPV6:
6994 *flow_type = UDP_V6_FLOW;
6995 break;
6996 case CLASS_CODE_AH_ESP_IPV6:
6997 *flow_type = AH_V6_FLOW;
6998 break;
6999 case CLASS_CODE_SCTP_IPV6:
7000 *flow_type = SCTP_V6_FLOW;
7001 break;
7002 case CLASS_CODE_USER_PROG1:
7003 case CLASS_CODE_USER_PROG2:
7004 case CLASS_CODE_USER_PROG3:
7005 case CLASS_CODE_USER_PROG4:
7006 *flow_type = IP_USER_FLOW;
7007 break;
7008 default:
7009 return 0;
7010 }
7011
7012 return 1;
7013 }
7014
7015 static int niu_ethflow_to_class(int flow_type, u64 *class)
7016 {
7017 switch (flow_type) {
7018 case TCP_V4_FLOW:
7019 *class = CLASS_CODE_TCP_IPV4;
7020 break;
7021 case UDP_V4_FLOW:
7022 *class = CLASS_CODE_UDP_IPV4;
7023 break;
7024 case AH_ESP_V4_FLOW:
7025 case AH_V4_FLOW:
7026 case ESP_V4_FLOW:
7027 *class = CLASS_CODE_AH_ESP_IPV4;
7028 break;
7029 case SCTP_V4_FLOW:
7030 *class = CLASS_CODE_SCTP_IPV4;
7031 break;
7032 case TCP_V6_FLOW:
7033 *class = CLASS_CODE_TCP_IPV6;
7034 break;
7035 case UDP_V6_FLOW:
7036 *class = CLASS_CODE_UDP_IPV6;
7037 break;
7038 case AH_ESP_V6_FLOW:
7039 case AH_V6_FLOW:
7040 case ESP_V6_FLOW:
7041 *class = CLASS_CODE_AH_ESP_IPV6;
7042 break;
7043 case SCTP_V6_FLOW:
7044 *class = CLASS_CODE_SCTP_IPV6;
7045 break;
7046 default:
7047 return 0;
7048 }
7049
7050 return 1;
7051 }
7052
7053 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7054 {
7055 u64 ethflow = 0;
7056
7057 if (flow_key & FLOW_KEY_L2DA)
7058 ethflow |= RXH_L2DA;
7059 if (flow_key & FLOW_KEY_VLAN)
7060 ethflow |= RXH_VLAN;
7061 if (flow_key & FLOW_KEY_IPSA)
7062 ethflow |= RXH_IP_SRC;
7063 if (flow_key & FLOW_KEY_IPDA)
7064 ethflow |= RXH_IP_DST;
7065 if (flow_key & FLOW_KEY_PROTO)
7066 ethflow |= RXH_L3_PROTO;
7067 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7068 ethflow |= RXH_L4_B_0_1;
7069 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7070 ethflow |= RXH_L4_B_2_3;
7071
7072 return ethflow;
7073
7074 }
7075
7076 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7077 {
7078 u64 key = 0;
7079
7080 if (ethflow & RXH_L2DA)
7081 key |= FLOW_KEY_L2DA;
7082 if (ethflow & RXH_VLAN)
7083 key |= FLOW_KEY_VLAN;
7084 if (ethflow & RXH_IP_SRC)
7085 key |= FLOW_KEY_IPSA;
7086 if (ethflow & RXH_IP_DST)
7087 key |= FLOW_KEY_IPDA;
7088 if (ethflow & RXH_L3_PROTO)
7089 key |= FLOW_KEY_PROTO;
7090 if (ethflow & RXH_L4_B_0_1)
7091 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7092 if (ethflow & RXH_L4_B_2_3)
7093 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7094
7095 *flow_key = key;
7096
7097 return 1;
7098
7099 }
7100
7101 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7102 {
7103 u64 class;
7104
7105 nfc->data = 0;
7106
7107 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7108 return -EINVAL;
7109
7110 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7111 TCAM_KEY_DISC)
7112 nfc->data = RXH_DISCARD;
7113 else
7114 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7115 CLASS_CODE_USER_PROG1]);
7116 return 0;
7117 }
7118
7119 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7120 struct ethtool_rx_flow_spec *fsp)
7121 {
7122 u32 tmp;
7123 u16 prt;
7124
7125 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7126 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7127
7128 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7129 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7130
7131 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7132 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7133
7134 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7135 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7136
7137 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7138 TCAM_V4KEY2_TOS_SHIFT;
7139 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7140 TCAM_V4KEY2_TOS_SHIFT;
7141
7142 switch (fsp->flow_type) {
7143 case TCP_V4_FLOW:
7144 case UDP_V4_FLOW:
7145 case SCTP_V4_FLOW:
7146 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7147 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7148 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7149
7150 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7151 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7152 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7153
7154 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7155 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7156 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7157
7158 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7159 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7160 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7161 break;
7162 case AH_V4_FLOW:
7163 case ESP_V4_FLOW:
7164 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7165 TCAM_V4KEY2_PORT_SPI_SHIFT;
7166 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7167
7168 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7169 TCAM_V4KEY2_PORT_SPI_SHIFT;
7170 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7171 break;
7172 case IP_USER_FLOW:
7173 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7174 TCAM_V4KEY2_PORT_SPI_SHIFT;
7175 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7176
7177 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7178 TCAM_V4KEY2_PORT_SPI_SHIFT;
7179 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7180
7181 fsp->h_u.usr_ip4_spec.proto =
7182 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7183 TCAM_V4KEY2_PROTO_SHIFT;
7184 fsp->m_u.usr_ip4_spec.proto =
7185 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7186 TCAM_V4KEY2_PROTO_SHIFT;
7187
7188 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7189 break;
7190 default:
7191 break;
7192 }
7193 }
7194
7195 static int niu_get_ethtool_tcam_entry(struct niu *np,
7196 struct ethtool_rxnfc *nfc)
7197 {
7198 struct niu_parent *parent = np->parent;
7199 struct niu_tcam_entry *tp;
7200 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7201 u16 idx;
7202 u64 class;
7203 int ret = 0;
7204
7205 idx = tcam_get_index(np, (u16)nfc->fs.location);
7206
7207 tp = &parent->tcam[idx];
7208 if (!tp->valid) {
7209 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7210 parent->index, (u16)nfc->fs.location, idx);
7211 return -EINVAL;
7212 }
7213
7214 /* fill the flow spec entry */
7215 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7216 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7217 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7218
7219 if (ret < 0) {
7220 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7221 parent->index);
7222 ret = -EINVAL;
7223 goto out;
7224 }
7225
7226 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7227 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7228 TCAM_V4KEY2_PROTO_SHIFT;
7229 if (proto == IPPROTO_ESP) {
7230 if (fsp->flow_type == AH_V4_FLOW)
7231 fsp->flow_type = ESP_V4_FLOW;
7232 else
7233 fsp->flow_type = ESP_V6_FLOW;
7234 }
7235 }
7236
7237 switch (fsp->flow_type) {
7238 case TCP_V4_FLOW:
7239 case UDP_V4_FLOW:
7240 case SCTP_V4_FLOW:
7241 case AH_V4_FLOW:
7242 case ESP_V4_FLOW:
7243 niu_get_ip4fs_from_tcam_key(tp, fsp);
7244 break;
7245 case TCP_V6_FLOW:
7246 case UDP_V6_FLOW:
7247 case SCTP_V6_FLOW:
7248 case AH_V6_FLOW:
7249 case ESP_V6_FLOW:
7250 /* Not yet implemented */
7251 ret = -EINVAL;
7252 break;
7253 case IP_USER_FLOW:
7254 niu_get_ip4fs_from_tcam_key(tp, fsp);
7255 break;
7256 default:
7257 ret = -EINVAL;
7258 break;
7259 }
7260
7261 if (ret < 0)
7262 goto out;
7263
7264 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7265 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7266 else
7267 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7268 TCAM_ASSOCDATA_OFFSET_SHIFT;
7269
7270 /* put the tcam size here */
7271 nfc->data = tcam_get_size(np);
7272 out:
7273 return ret;
7274 }
7275
7276 static int niu_get_ethtool_tcam_all(struct niu *np,
7277 struct ethtool_rxnfc *nfc,
7278 u32 *rule_locs)
7279 {
7280 struct niu_parent *parent = np->parent;
7281 struct niu_tcam_entry *tp;
7282 int i, idx, cnt;
7283 unsigned long flags;
7284 int ret = 0;
7285
7286 /* put the tcam size here */
7287 nfc->data = tcam_get_size(np);
7288
7289 niu_lock_parent(np, flags);
7290 for (cnt = 0, i = 0; i < nfc->data; i++) {
7291 idx = tcam_get_index(np, i);
7292 tp = &parent->tcam[idx];
7293 if (!tp->valid)
7294 continue;
7295 if (cnt == nfc->rule_cnt) {
7296 ret = -EMSGSIZE;
7297 break;
7298 }
7299 rule_locs[cnt] = i;
7300 cnt++;
7301 }
7302 niu_unlock_parent(np, flags);
7303
7304 return ret;
7305 }
7306
7307 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7308 void *rule_locs)
7309 {
7310 struct niu *np = netdev_priv(dev);
7311 int ret = 0;
7312
7313 switch (cmd->cmd) {
7314 case ETHTOOL_GRXFH:
7315 ret = niu_get_hash_opts(np, cmd);
7316 break;
7317 case ETHTOOL_GRXRINGS:
7318 cmd->data = np->num_rx_rings;
7319 break;
7320 case ETHTOOL_GRXCLSRLCNT:
7321 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7322 break;
7323 case ETHTOOL_GRXCLSRULE:
7324 ret = niu_get_ethtool_tcam_entry(np, cmd);
7325 break;
7326 case ETHTOOL_GRXCLSRLALL:
7327 ret = niu_get_ethtool_tcam_all(np, cmd, (u32 *)rule_locs);
7328 break;
7329 default:
7330 ret = -EINVAL;
7331 break;
7332 }
7333
7334 return ret;
7335 }
7336
7337 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7338 {
7339 u64 class;
7340 u64 flow_key = 0;
7341 unsigned long flags;
7342
7343 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7344 return -EINVAL;
7345
7346 if (class < CLASS_CODE_USER_PROG1 ||
7347 class > CLASS_CODE_SCTP_IPV6)
7348 return -EINVAL;
7349
7350 if (nfc->data & RXH_DISCARD) {
7351 niu_lock_parent(np, flags);
7352 flow_key = np->parent->tcam_key[class -
7353 CLASS_CODE_USER_PROG1];
7354 flow_key |= TCAM_KEY_DISC;
7355 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7356 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7357 niu_unlock_parent(np, flags);
7358 return 0;
7359 } else {
7360 /* Discard was set before, but is not set now */
7361 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7362 TCAM_KEY_DISC) {
7363 niu_lock_parent(np, flags);
7364 flow_key = np->parent->tcam_key[class -
7365 CLASS_CODE_USER_PROG1];
7366 flow_key &= ~TCAM_KEY_DISC;
7367 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7368 flow_key);
7369 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7370 flow_key;
7371 niu_unlock_parent(np, flags);
7372 }
7373 }
7374
7375 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7376 return -EINVAL;
7377
7378 niu_lock_parent(np, flags);
7379 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7380 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7381 niu_unlock_parent(np, flags);
7382
7383 return 0;
7384 }
7385
7386 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7387 struct niu_tcam_entry *tp,
7388 int l2_rdc_tab, u64 class)
7389 {
7390 u8 pid = 0;
7391 u32 sip, dip, sipm, dipm, spi, spim;
7392 u16 sport, dport, spm, dpm;
7393
7394 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7395 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7396 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7397 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7398
7399 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7400 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7401 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7402 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7403
7404 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7405 tp->key[3] |= dip;
7406
7407 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7408 tp->key_mask[3] |= dipm;
7409
7410 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7411 TCAM_V4KEY2_TOS_SHIFT);
7412 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7413 TCAM_V4KEY2_TOS_SHIFT);
7414 switch (fsp->flow_type) {
7415 case TCP_V4_FLOW:
7416 case UDP_V4_FLOW:
7417 case SCTP_V4_FLOW:
7418 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7419 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7420 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7421 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7422
7423 tp->key[2] |= (((u64)sport << 16) | dport);
7424 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7425 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7426 break;
7427 case AH_V4_FLOW:
7428 case ESP_V4_FLOW:
7429 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7430 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7431
7432 tp->key[2] |= spi;
7433 tp->key_mask[2] |= spim;
7434 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7435 break;
7436 case IP_USER_FLOW:
7437 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7438 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7439
7440 tp->key[2] |= spi;
7441 tp->key_mask[2] |= spim;
7442 pid = fsp->h_u.usr_ip4_spec.proto;
7443 break;
7444 default:
7445 break;
7446 }
7447
7448 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7449 if (pid) {
7450 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7451 }
7452 }
7453
7454 static int niu_add_ethtool_tcam_entry(struct niu *np,
7455 struct ethtool_rxnfc *nfc)
7456 {
7457 struct niu_parent *parent = np->parent;
7458 struct niu_tcam_entry *tp;
7459 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7460 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7461 int l2_rdc_table = rdc_table->first_table_num;
7462 u16 idx;
7463 u64 class;
7464 unsigned long flags;
7465 int err, ret;
7466
7467 ret = 0;
7468
7469 idx = nfc->fs.location;
7470 if (idx >= tcam_get_size(np))
7471 return -EINVAL;
7472
7473 if (fsp->flow_type == IP_USER_FLOW) {
7474 int i;
7475 int add_usr_cls = 0;
7476 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7477 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7478
7479 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7480 return -EINVAL;
7481
7482 niu_lock_parent(np, flags);
7483
7484 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7485 if (parent->l3_cls[i]) {
7486 if (uspec->proto == parent->l3_cls_pid[i]) {
7487 class = parent->l3_cls[i];
7488 parent->l3_cls_refcnt[i]++;
7489 add_usr_cls = 1;
7490 break;
7491 }
7492 } else {
7493 /* Program new user IP class */
7494 switch (i) {
7495 case 0:
7496 class = CLASS_CODE_USER_PROG1;
7497 break;
7498 case 1:
7499 class = CLASS_CODE_USER_PROG2;
7500 break;
7501 case 2:
7502 class = CLASS_CODE_USER_PROG3;
7503 break;
7504 case 3:
7505 class = CLASS_CODE_USER_PROG4;
7506 break;
7507 default:
7508 break;
7509 }
7510 ret = tcam_user_ip_class_set(np, class, 0,
7511 uspec->proto,
7512 uspec->tos,
7513 umask->tos);
7514 if (ret)
7515 goto out;
7516
7517 ret = tcam_user_ip_class_enable(np, class, 1);
7518 if (ret)
7519 goto out;
7520 parent->l3_cls[i] = class;
7521 parent->l3_cls_pid[i] = uspec->proto;
7522 parent->l3_cls_refcnt[i]++;
7523 add_usr_cls = 1;
7524 break;
7525 }
7526 }
7527 if (!add_usr_cls) {
7528 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7529 parent->index, __func__, uspec->proto);
7530 ret = -EINVAL;
7531 goto out;
7532 }
7533 niu_unlock_parent(np, flags);
7534 } else {
7535 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7536 return -EINVAL;
7537 }
7538 }
7539
7540 niu_lock_parent(np, flags);
7541
7542 idx = tcam_get_index(np, idx);
7543 tp = &parent->tcam[idx];
7544
7545 memset(tp, 0, sizeof(*tp));
7546
7547 /* fill in the tcam key and mask */
7548 switch (fsp->flow_type) {
7549 case TCP_V4_FLOW:
7550 case UDP_V4_FLOW:
7551 case SCTP_V4_FLOW:
7552 case AH_V4_FLOW:
7553 case ESP_V4_FLOW:
7554 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7555 break;
7556 case TCP_V6_FLOW:
7557 case UDP_V6_FLOW:
7558 case SCTP_V6_FLOW:
7559 case AH_V6_FLOW:
7560 case ESP_V6_FLOW:
7561 /* Not yet implemented */
7562 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7563 parent->index, __func__, fsp->flow_type);
7564 ret = -EINVAL;
7565 goto out;
7566 case IP_USER_FLOW:
7567 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7568 break;
7569 default:
7570 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7571 parent->index, __func__, fsp->flow_type);
7572 ret = -EINVAL;
7573 goto out;
7574 }
7575
7576 /* fill in the assoc data */
7577 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7578 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7579 } else {
7580 if (fsp->ring_cookie >= np->num_rx_rings) {
7581 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7582 parent->index, __func__,
7583 (long long)fsp->ring_cookie);
7584 ret = -EINVAL;
7585 goto out;
7586 }
7587 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7588 (fsp->ring_cookie <<
7589 TCAM_ASSOCDATA_OFFSET_SHIFT));
7590 }
7591
7592 err = tcam_write(np, idx, tp->key, tp->key_mask);
7593 if (err) {
7594 ret = -EINVAL;
7595 goto out;
7596 }
7597 err = tcam_assoc_write(np, idx, tp->assoc_data);
7598 if (err) {
7599 ret = -EINVAL;
7600 goto out;
7601 }
7602
7603 /* validate the entry */
7604 tp->valid = 1;
7605 np->clas.tcam_valid_entries++;
7606 out:
7607 niu_unlock_parent(np, flags);
7608
7609 return ret;
7610 }
7611
7612 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7613 {
7614 struct niu_parent *parent = np->parent;
7615 struct niu_tcam_entry *tp;
7616 u16 idx;
7617 unsigned long flags;
7618 u64 class;
7619 int ret = 0;
7620
7621 if (loc >= tcam_get_size(np))
7622 return -EINVAL;
7623
7624 niu_lock_parent(np, flags);
7625
7626 idx = tcam_get_index(np, loc);
7627 tp = &parent->tcam[idx];
7628
7629 /* if the entry is of a user defined class, then update*/
7630 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7631 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7632
7633 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7634 int i;
7635 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7636 if (parent->l3_cls[i] == class) {
7637 parent->l3_cls_refcnt[i]--;
7638 if (!parent->l3_cls_refcnt[i]) {
7639 /* disable class */
7640 ret = tcam_user_ip_class_enable(np,
7641 class,
7642 0);
7643 if (ret)
7644 goto out;
7645 parent->l3_cls[i] = 0;
7646 parent->l3_cls_pid[i] = 0;
7647 }
7648 break;
7649 }
7650 }
7651 if (i == NIU_L3_PROG_CLS) {
7652 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7653 parent->index, __func__,
7654 (unsigned long long)class);
7655 ret = -EINVAL;
7656 goto out;
7657 }
7658 }
7659
7660 ret = tcam_flush(np, idx);
7661 if (ret)
7662 goto out;
7663
7664 /* invalidate the entry */
7665 tp->valid = 0;
7666 np->clas.tcam_valid_entries--;
7667 out:
7668 niu_unlock_parent(np, flags);
7669
7670 return ret;
7671 }
7672
7673 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7674 {
7675 struct niu *np = netdev_priv(dev);
7676 int ret = 0;
7677
7678 switch (cmd->cmd) {
7679 case ETHTOOL_SRXFH:
7680 ret = niu_set_hash_opts(np, cmd);
7681 break;
7682 case ETHTOOL_SRXCLSRLINS:
7683 ret = niu_add_ethtool_tcam_entry(np, cmd);
7684 break;
7685 case ETHTOOL_SRXCLSRLDEL:
7686 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7687 break;
7688 default:
7689 ret = -EINVAL;
7690 break;
7691 }
7692
7693 return ret;
7694 }
7695
7696 static const struct {
7697 const char string[ETH_GSTRING_LEN];
7698 } niu_xmac_stat_keys[] = {
7699 { "tx_frames" },
7700 { "tx_bytes" },
7701 { "tx_fifo_errors" },
7702 { "tx_overflow_errors" },
7703 { "tx_max_pkt_size_errors" },
7704 { "tx_underflow_errors" },
7705 { "rx_local_faults" },
7706 { "rx_remote_faults" },
7707 { "rx_link_faults" },
7708 { "rx_align_errors" },
7709 { "rx_frags" },
7710 { "rx_mcasts" },
7711 { "rx_bcasts" },
7712 { "rx_hist_cnt1" },
7713 { "rx_hist_cnt2" },
7714 { "rx_hist_cnt3" },
7715 { "rx_hist_cnt4" },
7716 { "rx_hist_cnt5" },
7717 { "rx_hist_cnt6" },
7718 { "rx_hist_cnt7" },
7719 { "rx_octets" },
7720 { "rx_code_violations" },
7721 { "rx_len_errors" },
7722 { "rx_crc_errors" },
7723 { "rx_underflows" },
7724 { "rx_overflows" },
7725 { "pause_off_state" },
7726 { "pause_on_state" },
7727 { "pause_received" },
7728 };
7729
7730 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7731
7732 static const struct {
7733 const char string[ETH_GSTRING_LEN];
7734 } niu_bmac_stat_keys[] = {
7735 { "tx_underflow_errors" },
7736 { "tx_max_pkt_size_errors" },
7737 { "tx_bytes" },
7738 { "tx_frames" },
7739 { "rx_overflows" },
7740 { "rx_frames" },
7741 { "rx_align_errors" },
7742 { "rx_crc_errors" },
7743 { "rx_len_errors" },
7744 { "pause_off_state" },
7745 { "pause_on_state" },
7746 { "pause_received" },
7747 };
7748
7749 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7750
7751 static const struct {
7752 const char string[ETH_GSTRING_LEN];
7753 } niu_rxchan_stat_keys[] = {
7754 { "rx_channel" },
7755 { "rx_packets" },
7756 { "rx_bytes" },
7757 { "rx_dropped" },
7758 { "rx_errors" },
7759 };
7760
7761 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7762
7763 static const struct {
7764 const char string[ETH_GSTRING_LEN];
7765 } niu_txchan_stat_keys[] = {
7766 { "tx_channel" },
7767 { "tx_packets" },
7768 { "tx_bytes" },
7769 { "tx_errors" },
7770 };
7771
7772 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7773
7774 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7775 {
7776 struct niu *np = netdev_priv(dev);
7777 int i;
7778
7779 if (stringset != ETH_SS_STATS)
7780 return;
7781
7782 if (np->flags & NIU_FLAGS_XMAC) {
7783 memcpy(data, niu_xmac_stat_keys,
7784 sizeof(niu_xmac_stat_keys));
7785 data += sizeof(niu_xmac_stat_keys);
7786 } else {
7787 memcpy(data, niu_bmac_stat_keys,
7788 sizeof(niu_bmac_stat_keys));
7789 data += sizeof(niu_bmac_stat_keys);
7790 }
7791 for (i = 0; i < np->num_rx_rings; i++) {
7792 memcpy(data, niu_rxchan_stat_keys,
7793 sizeof(niu_rxchan_stat_keys));
7794 data += sizeof(niu_rxchan_stat_keys);
7795 }
7796 for (i = 0; i < np->num_tx_rings; i++) {
7797 memcpy(data, niu_txchan_stat_keys,
7798 sizeof(niu_txchan_stat_keys));
7799 data += sizeof(niu_txchan_stat_keys);
7800 }
7801 }
7802
7803 static int niu_get_sset_count(struct net_device *dev, int stringset)
7804 {
7805 struct niu *np = netdev_priv(dev);
7806
7807 if (stringset != ETH_SS_STATS)
7808 return -EINVAL;
7809
7810 return (np->flags & NIU_FLAGS_XMAC ?
7811 NUM_XMAC_STAT_KEYS :
7812 NUM_BMAC_STAT_KEYS) +
7813 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7814 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7815 }
7816
7817 static void niu_get_ethtool_stats(struct net_device *dev,
7818 struct ethtool_stats *stats, u64 *data)
7819 {
7820 struct niu *np = netdev_priv(dev);
7821 int i;
7822
7823 niu_sync_mac_stats(np);
7824 if (np->flags & NIU_FLAGS_XMAC) {
7825 memcpy(data, &np->mac_stats.xmac,
7826 sizeof(struct niu_xmac_stats));
7827 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7828 } else {
7829 memcpy(data, &np->mac_stats.bmac,
7830 sizeof(struct niu_bmac_stats));
7831 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7832 }
7833 for (i = 0; i < np->num_rx_rings; i++) {
7834 struct rx_ring_info *rp = &np->rx_rings[i];
7835
7836 niu_sync_rx_discard_stats(np, rp, 0);
7837
7838 data[0] = rp->rx_channel;
7839 data[1] = rp->rx_packets;
7840 data[2] = rp->rx_bytes;
7841 data[3] = rp->rx_dropped;
7842 data[4] = rp->rx_errors;
7843 data += 5;
7844 }
7845 for (i = 0; i < np->num_tx_rings; i++) {
7846 struct tx_ring_info *rp = &np->tx_rings[i];
7847
7848 data[0] = rp->tx_channel;
7849 data[1] = rp->tx_packets;
7850 data[2] = rp->tx_bytes;
7851 data[3] = rp->tx_errors;
7852 data += 4;
7853 }
7854 }
7855
7856 static u64 niu_led_state_save(struct niu *np)
7857 {
7858 if (np->flags & NIU_FLAGS_XMAC)
7859 return nr64_mac(XMAC_CONFIG);
7860 else
7861 return nr64_mac(BMAC_XIF_CONFIG);
7862 }
7863
7864 static void niu_led_state_restore(struct niu *np, u64 val)
7865 {
7866 if (np->flags & NIU_FLAGS_XMAC)
7867 nw64_mac(XMAC_CONFIG, val);
7868 else
7869 nw64_mac(BMAC_XIF_CONFIG, val);
7870 }
7871
7872 static void niu_force_led(struct niu *np, int on)
7873 {
7874 u64 val, reg, bit;
7875
7876 if (np->flags & NIU_FLAGS_XMAC) {
7877 reg = XMAC_CONFIG;
7878 bit = XMAC_CONFIG_FORCE_LED_ON;
7879 } else {
7880 reg = BMAC_XIF_CONFIG;
7881 bit = BMAC_XIF_CONFIG_LINK_LED;
7882 }
7883
7884 val = nr64_mac(reg);
7885 if (on)
7886 val |= bit;
7887 else
7888 val &= ~bit;
7889 nw64_mac(reg, val);
7890 }
7891
7892 static int niu_set_phys_id(struct net_device *dev,
7893 enum ethtool_phys_id_state state)
7894
7895 {
7896 struct niu *np = netdev_priv(dev);
7897
7898 if (!netif_running(dev))
7899 return -EAGAIN;
7900
7901 switch (state) {
7902 case ETHTOOL_ID_ACTIVE:
7903 np->orig_led_state = niu_led_state_save(np);
7904 return 1; /* cycle on/off once per second */
7905
7906 case ETHTOOL_ID_ON:
7907 niu_force_led(np, 1);
7908 break;
7909
7910 case ETHTOOL_ID_OFF:
7911 niu_force_led(np, 0);
7912 break;
7913
7914 case ETHTOOL_ID_INACTIVE:
7915 niu_led_state_restore(np, np->orig_led_state);
7916 }
7917
7918 return 0;
7919 }
7920
7921 static const struct ethtool_ops niu_ethtool_ops = {
7922 .get_drvinfo = niu_get_drvinfo,
7923 .get_link = ethtool_op_get_link,
7924 .get_msglevel = niu_get_msglevel,
7925 .set_msglevel = niu_set_msglevel,
7926 .nway_reset = niu_nway_reset,
7927 .get_eeprom_len = niu_get_eeprom_len,
7928 .get_eeprom = niu_get_eeprom,
7929 .get_settings = niu_get_settings,
7930 .set_settings = niu_set_settings,
7931 .get_strings = niu_get_strings,
7932 .get_sset_count = niu_get_sset_count,
7933 .get_ethtool_stats = niu_get_ethtool_stats,
7934 .set_phys_id = niu_set_phys_id,
7935 .get_rxnfc = niu_get_nfc,
7936 .set_rxnfc = niu_set_nfc,
7937 };
7938
7939 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7940 int ldg, int ldn)
7941 {
7942 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7943 return -EINVAL;
7944 if (ldn < 0 || ldn > LDN_MAX)
7945 return -EINVAL;
7946
7947 parent->ldg_map[ldn] = ldg;
7948
7949 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7950 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7951 * the firmware, and we're not supposed to change them.
7952 * Validate the mapping, because if it's wrong we probably
7953 * won't get any interrupts and that's painful to debug.
7954 */
7955 if (nr64(LDG_NUM(ldn)) != ldg) {
7956 dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7957 np->port, ldn, ldg,
7958 (unsigned long long) nr64(LDG_NUM(ldn)));
7959 return -EINVAL;
7960 }
7961 } else
7962 nw64(LDG_NUM(ldn), ldg);
7963
7964 return 0;
7965 }
7966
7967 static int niu_set_ldg_timer_res(struct niu *np, int res)
7968 {
7969 if (res < 0 || res > LDG_TIMER_RES_VAL)
7970 return -EINVAL;
7971
7972
7973 nw64(LDG_TIMER_RES, res);
7974
7975 return 0;
7976 }
7977
7978 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7979 {
7980 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7981 (func < 0 || func > 3) ||
7982 (vector < 0 || vector > 0x1f))
7983 return -EINVAL;
7984
7985 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7986
7987 return 0;
7988 }
7989
7990 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7991 {
7992 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7993 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7994 int limit;
7995
7996 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7997 return -EINVAL;
7998
7999 frame = frame_base;
8000 nw64(ESPC_PIO_STAT, frame);
8001 limit = 64;
8002 do {
8003 udelay(5);
8004 frame = nr64(ESPC_PIO_STAT);
8005 if (frame & ESPC_PIO_STAT_READ_END)
8006 break;
8007 } while (limit--);
8008 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8009 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8010 (unsigned long long) frame);
8011 return -ENODEV;
8012 }
8013
8014 frame = frame_base;
8015 nw64(ESPC_PIO_STAT, frame);
8016 limit = 64;
8017 do {
8018 udelay(5);
8019 frame = nr64(ESPC_PIO_STAT);
8020 if (frame & ESPC_PIO_STAT_READ_END)
8021 break;
8022 } while (limit--);
8023 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8024 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8025 (unsigned long long) frame);
8026 return -ENODEV;
8027 }
8028
8029 frame = nr64(ESPC_PIO_STAT);
8030 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8031 }
8032
8033 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8034 {
8035 int err = niu_pci_eeprom_read(np, off);
8036 u16 val;
8037
8038 if (err < 0)
8039 return err;
8040 val = (err << 8);
8041 err = niu_pci_eeprom_read(np, off + 1);
8042 if (err < 0)
8043 return err;
8044 val |= (err & 0xff);
8045
8046 return val;
8047 }
8048
8049 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8050 {
8051 int err = niu_pci_eeprom_read(np, off);
8052 u16 val;
8053
8054 if (err < 0)
8055 return err;
8056
8057 val = (err & 0xff);
8058 err = niu_pci_eeprom_read(np, off + 1);
8059 if (err < 0)
8060 return err;
8061
8062 val |= (err & 0xff) << 8;
8063
8064 return val;
8065 }
8066
8067 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8068 u32 off,
8069 char *namebuf,
8070 int namebuf_len)
8071 {
8072 int i;
8073
8074 for (i = 0; i < namebuf_len; i++) {
8075 int err = niu_pci_eeprom_read(np, off + i);
8076 if (err < 0)
8077 return err;
8078 *namebuf++ = err;
8079 if (!err)
8080 break;
8081 }
8082 if (i >= namebuf_len)
8083 return -EINVAL;
8084
8085 return i + 1;
8086 }
8087
8088 static void __devinit niu_vpd_parse_version(struct niu *np)
8089 {
8090 struct niu_vpd *vpd = &np->vpd;
8091 int len = strlen(vpd->version) + 1;
8092 const char *s = vpd->version;
8093 int i;
8094
8095 for (i = 0; i < len - 5; i++) {
8096 if (!strncmp(s + i, "FCode ", 6))
8097 break;
8098 }
8099 if (i >= len - 5)
8100 return;
8101
8102 s += i + 5;
8103 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8104
8105 netif_printk(np, probe, KERN_DEBUG, np->dev,
8106 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8107 vpd->fcode_major, vpd->fcode_minor);
8108 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8109 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8110 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8111 np->flags |= NIU_FLAGS_VPD_VALID;
8112 }
8113
8114 /* ESPC_PIO_EN_ENABLE must be set */
8115 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8116 u32 start, u32 end)
8117 {
8118 unsigned int found_mask = 0;
8119 #define FOUND_MASK_MODEL 0x00000001
8120 #define FOUND_MASK_BMODEL 0x00000002
8121 #define FOUND_MASK_VERS 0x00000004
8122 #define FOUND_MASK_MAC 0x00000008
8123 #define FOUND_MASK_NMAC 0x00000010
8124 #define FOUND_MASK_PHY 0x00000020
8125 #define FOUND_MASK_ALL 0x0000003f
8126
8127 netif_printk(np, probe, KERN_DEBUG, np->dev,
8128 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8129 while (start < end) {
8130 int len, err, prop_len;
8131 char namebuf[64];
8132 u8 *prop_buf;
8133 int max_len;
8134
8135 if (found_mask == FOUND_MASK_ALL) {
8136 niu_vpd_parse_version(np);
8137 return 1;
8138 }
8139
8140 err = niu_pci_eeprom_read(np, start + 2);
8141 if (err < 0)
8142 return err;
8143 len = err;
8144 start += 3;
8145
8146 prop_len = niu_pci_eeprom_read(np, start + 4);
8147 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8148 if (err < 0)
8149 return err;
8150
8151 prop_buf = NULL;
8152 max_len = 0;
8153 if (!strcmp(namebuf, "model")) {
8154 prop_buf = np->vpd.model;
8155 max_len = NIU_VPD_MODEL_MAX;
8156 found_mask |= FOUND_MASK_MODEL;
8157 } else if (!strcmp(namebuf, "board-model")) {
8158 prop_buf = np->vpd.board_model;
8159 max_len = NIU_VPD_BD_MODEL_MAX;
8160 found_mask |= FOUND_MASK_BMODEL;
8161 } else if (!strcmp(namebuf, "version")) {
8162 prop_buf = np->vpd.version;
8163 max_len = NIU_VPD_VERSION_MAX;
8164 found_mask |= FOUND_MASK_VERS;
8165 } else if (!strcmp(namebuf, "local-mac-address")) {
8166 prop_buf = np->vpd.local_mac;
8167 max_len = ETH_ALEN;
8168 found_mask |= FOUND_MASK_MAC;
8169 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8170 prop_buf = &np->vpd.mac_num;
8171 max_len = 1;
8172 found_mask |= FOUND_MASK_NMAC;
8173 } else if (!strcmp(namebuf, "phy-type")) {
8174 prop_buf = np->vpd.phy_type;
8175 max_len = NIU_VPD_PHY_TYPE_MAX;
8176 found_mask |= FOUND_MASK_PHY;
8177 }
8178
8179 if (max_len && prop_len > max_len) {
8180 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8181 return -EINVAL;
8182 }
8183
8184 if (prop_buf) {
8185 u32 off = start + 5 + err;
8186 int i;
8187
8188 netif_printk(np, probe, KERN_DEBUG, np->dev,
8189 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8190 namebuf, prop_len);
8191 for (i = 0; i < prop_len; i++)
8192 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8193 }
8194
8195 start += len;
8196 }
8197
8198 return 0;
8199 }
8200
8201 /* ESPC_PIO_EN_ENABLE must be set */
8202 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8203 {
8204 u32 offset;
8205 int err;
8206
8207 err = niu_pci_eeprom_read16_swp(np, start + 1);
8208 if (err < 0)
8209 return;
8210
8211 offset = err + 3;
8212
8213 while (start + offset < ESPC_EEPROM_SIZE) {
8214 u32 here = start + offset;
8215 u32 end;
8216
8217 err = niu_pci_eeprom_read(np, here);
8218 if (err != 0x90)
8219 return;
8220
8221 err = niu_pci_eeprom_read16_swp(np, here + 1);
8222 if (err < 0)
8223 return;
8224
8225 here = start + offset + 3;
8226 end = start + offset + err;
8227
8228 offset += err;
8229
8230 err = niu_pci_vpd_scan_props(np, here, end);
8231 if (err < 0 || err == 1)
8232 return;
8233 }
8234 }
8235
8236 /* ESPC_PIO_EN_ENABLE must be set */
8237 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8238 {
8239 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8240 int err;
8241
8242 while (start < end) {
8243 ret = start;
8244
8245 /* ROM header signature? */
8246 err = niu_pci_eeprom_read16(np, start + 0);
8247 if (err != 0x55aa)
8248 return 0;
8249
8250 /* Apply offset to PCI data structure. */
8251 err = niu_pci_eeprom_read16(np, start + 23);
8252 if (err < 0)
8253 return 0;
8254 start += err;
8255
8256 /* Check for "PCIR" signature. */
8257 err = niu_pci_eeprom_read16(np, start + 0);
8258 if (err != 0x5043)
8259 return 0;
8260 err = niu_pci_eeprom_read16(np, start + 2);
8261 if (err != 0x4952)
8262 return 0;
8263
8264 /* Check for OBP image type. */
8265 err = niu_pci_eeprom_read(np, start + 20);
8266 if (err < 0)
8267 return 0;
8268 if (err != 0x01) {
8269 err = niu_pci_eeprom_read(np, ret + 2);
8270 if (err < 0)
8271 return 0;
8272
8273 start = ret + (err * 512);
8274 continue;
8275 }
8276
8277 err = niu_pci_eeprom_read16_swp(np, start + 8);
8278 if (err < 0)
8279 return err;
8280 ret += err;
8281
8282 err = niu_pci_eeprom_read(np, ret + 0);
8283 if (err != 0x82)
8284 return 0;
8285
8286 return ret;
8287 }
8288
8289 return 0;
8290 }
8291
8292 static int __devinit niu_phy_type_prop_decode(struct niu *np,
8293 const char *phy_prop)
8294 {
8295 if (!strcmp(phy_prop, "mif")) {
8296 /* 1G copper, MII */
8297 np->flags &= ~(NIU_FLAGS_FIBER |
8298 NIU_FLAGS_10G);
8299 np->mac_xcvr = MAC_XCVR_MII;
8300 } else if (!strcmp(phy_prop, "xgf")) {
8301 /* 10G fiber, XPCS */
8302 np->flags |= (NIU_FLAGS_10G |
8303 NIU_FLAGS_FIBER);
8304 np->mac_xcvr = MAC_XCVR_XPCS;
8305 } else if (!strcmp(phy_prop, "pcs")) {
8306 /* 1G fiber, PCS */
8307 np->flags &= ~NIU_FLAGS_10G;
8308 np->flags |= NIU_FLAGS_FIBER;
8309 np->mac_xcvr = MAC_XCVR_PCS;
8310 } else if (!strcmp(phy_prop, "xgc")) {
8311 /* 10G copper, XPCS */
8312 np->flags |= NIU_FLAGS_10G;
8313 np->flags &= ~NIU_FLAGS_FIBER;
8314 np->mac_xcvr = MAC_XCVR_XPCS;
8315 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8316 /* 10G Serdes or 1G Serdes, default to 10G */
8317 np->flags |= NIU_FLAGS_10G;
8318 np->flags &= ~NIU_FLAGS_FIBER;
8319 np->flags |= NIU_FLAGS_XCVR_SERDES;
8320 np->mac_xcvr = MAC_XCVR_XPCS;
8321 } else {
8322 return -EINVAL;
8323 }
8324 return 0;
8325 }
8326
8327 static int niu_pci_vpd_get_nports(struct niu *np)
8328 {
8329 int ports = 0;
8330
8331 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8332 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8333 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8334 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8335 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8336 ports = 4;
8337 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8338 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8339 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8340 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8341 ports = 2;
8342 }
8343
8344 return ports;
8345 }
8346
8347 static void __devinit niu_pci_vpd_validate(struct niu *np)
8348 {
8349 struct net_device *dev = np->dev;
8350 struct niu_vpd *vpd = &np->vpd;
8351 u8 val8;
8352
8353 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8354 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8355
8356 np->flags &= ~NIU_FLAGS_VPD_VALID;
8357 return;
8358 }
8359
8360 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8361 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8362 np->flags |= NIU_FLAGS_10G;
8363 np->flags &= ~NIU_FLAGS_FIBER;
8364 np->flags |= NIU_FLAGS_XCVR_SERDES;
8365 np->mac_xcvr = MAC_XCVR_PCS;
8366 if (np->port > 1) {
8367 np->flags |= NIU_FLAGS_FIBER;
8368 np->flags &= ~NIU_FLAGS_10G;
8369 }
8370 if (np->flags & NIU_FLAGS_10G)
8371 np->mac_xcvr = MAC_XCVR_XPCS;
8372 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8373 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8374 NIU_FLAGS_HOTPLUG_PHY);
8375 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8376 dev_err(np->device, "Illegal phy string [%s]\n",
8377 np->vpd.phy_type);
8378 dev_err(np->device, "Falling back to SPROM\n");
8379 np->flags &= ~NIU_FLAGS_VPD_VALID;
8380 return;
8381 }
8382
8383 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8384
8385 val8 = dev->perm_addr[5];
8386 dev->perm_addr[5] += np->port;
8387 if (dev->perm_addr[5] < val8)
8388 dev->perm_addr[4]++;
8389
8390 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8391 }
8392
8393 static int __devinit niu_pci_probe_sprom(struct niu *np)
8394 {
8395 struct net_device *dev = np->dev;
8396 int len, i;
8397 u64 val, sum;
8398 u8 val8;
8399
8400 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8401 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8402 len = val / 4;
8403
8404 np->eeprom_len = len;
8405
8406 netif_printk(np, probe, KERN_DEBUG, np->dev,
8407 "SPROM: Image size %llu\n", (unsigned long long)val);
8408
8409 sum = 0;
8410 for (i = 0; i < len; i++) {
8411 val = nr64(ESPC_NCR(i));
8412 sum += (val >> 0) & 0xff;
8413 sum += (val >> 8) & 0xff;
8414 sum += (val >> 16) & 0xff;
8415 sum += (val >> 24) & 0xff;
8416 }
8417 netif_printk(np, probe, KERN_DEBUG, np->dev,
8418 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8419 if ((sum & 0xff) != 0xab) {
8420 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8421 return -EINVAL;
8422 }
8423
8424 val = nr64(ESPC_PHY_TYPE);
8425 switch (np->port) {
8426 case 0:
8427 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8428 ESPC_PHY_TYPE_PORT0_SHIFT;
8429 break;
8430 case 1:
8431 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8432 ESPC_PHY_TYPE_PORT1_SHIFT;
8433 break;
8434 case 2:
8435 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8436 ESPC_PHY_TYPE_PORT2_SHIFT;
8437 break;
8438 case 3:
8439 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8440 ESPC_PHY_TYPE_PORT3_SHIFT;
8441 break;
8442 default:
8443 dev_err(np->device, "Bogus port number %u\n",
8444 np->port);
8445 return -EINVAL;
8446 }
8447 netif_printk(np, probe, KERN_DEBUG, np->dev,
8448 "SPROM: PHY type %x\n", val8);
8449
8450 switch (val8) {
8451 case ESPC_PHY_TYPE_1G_COPPER:
8452 /* 1G copper, MII */
8453 np->flags &= ~(NIU_FLAGS_FIBER |
8454 NIU_FLAGS_10G);
8455 np->mac_xcvr = MAC_XCVR_MII;
8456 break;
8457
8458 case ESPC_PHY_TYPE_1G_FIBER:
8459 /* 1G fiber, PCS */
8460 np->flags &= ~NIU_FLAGS_10G;
8461 np->flags |= NIU_FLAGS_FIBER;
8462 np->mac_xcvr = MAC_XCVR_PCS;
8463 break;
8464
8465 case ESPC_PHY_TYPE_10G_COPPER:
8466 /* 10G copper, XPCS */
8467 np->flags |= NIU_FLAGS_10G;
8468 np->flags &= ~NIU_FLAGS_FIBER;
8469 np->mac_xcvr = MAC_XCVR_XPCS;
8470 break;
8471
8472 case ESPC_PHY_TYPE_10G_FIBER:
8473 /* 10G fiber, XPCS */
8474 np->flags |= (NIU_FLAGS_10G |
8475 NIU_FLAGS_FIBER);
8476 np->mac_xcvr = MAC_XCVR_XPCS;
8477 break;
8478
8479 default:
8480 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8481 return -EINVAL;
8482 }
8483
8484 val = nr64(ESPC_MAC_ADDR0);
8485 netif_printk(np, probe, KERN_DEBUG, np->dev,
8486 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8487 dev->perm_addr[0] = (val >> 0) & 0xff;
8488 dev->perm_addr[1] = (val >> 8) & 0xff;
8489 dev->perm_addr[2] = (val >> 16) & 0xff;
8490 dev->perm_addr[3] = (val >> 24) & 0xff;
8491
8492 val = nr64(ESPC_MAC_ADDR1);
8493 netif_printk(np, probe, KERN_DEBUG, np->dev,
8494 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8495 dev->perm_addr[4] = (val >> 0) & 0xff;
8496 dev->perm_addr[5] = (val >> 8) & 0xff;
8497
8498 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8499 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8500 dev->perm_addr);
8501 return -EINVAL;
8502 }
8503
8504 val8 = dev->perm_addr[5];
8505 dev->perm_addr[5] += np->port;
8506 if (dev->perm_addr[5] < val8)
8507 dev->perm_addr[4]++;
8508
8509 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8510
8511 val = nr64(ESPC_MOD_STR_LEN);
8512 netif_printk(np, probe, KERN_DEBUG, np->dev,
8513 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8514 if (val >= 8 * 4)
8515 return -EINVAL;
8516
8517 for (i = 0; i < val; i += 4) {
8518 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8519
8520 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8521 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8522 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8523 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8524 }
8525 np->vpd.model[val] = '\0';
8526
8527 val = nr64(ESPC_BD_MOD_STR_LEN);
8528 netif_printk(np, probe, KERN_DEBUG, np->dev,
8529 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8530 if (val >= 4 * 4)
8531 return -EINVAL;
8532
8533 for (i = 0; i < val; i += 4) {
8534 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8535
8536 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8537 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8538 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8539 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8540 }
8541 np->vpd.board_model[val] = '\0';
8542
8543 np->vpd.mac_num =
8544 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8545 netif_printk(np, probe, KERN_DEBUG, np->dev,
8546 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8547
8548 return 0;
8549 }
8550
8551 static int __devinit niu_get_and_validate_port(struct niu *np)
8552 {
8553 struct niu_parent *parent = np->parent;
8554
8555 if (np->port <= 1)
8556 np->flags |= NIU_FLAGS_XMAC;
8557
8558 if (!parent->num_ports) {
8559 if (parent->plat_type == PLAT_TYPE_NIU) {
8560 parent->num_ports = 2;
8561 } else {
8562 parent->num_ports = niu_pci_vpd_get_nports(np);
8563 if (!parent->num_ports) {
8564 /* Fall back to SPROM as last resort.
8565 * This will fail on most cards.
8566 */
8567 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8568 ESPC_NUM_PORTS_MACS_VAL;
8569
8570 /* All of the current probing methods fail on
8571 * Maramba on-board parts.
8572 */
8573 if (!parent->num_ports)
8574 parent->num_ports = 4;
8575 }
8576 }
8577 }
8578
8579 if (np->port >= parent->num_ports)
8580 return -ENODEV;
8581
8582 return 0;
8583 }
8584
8585 static int __devinit phy_record(struct niu_parent *parent,
8586 struct phy_probe_info *p,
8587 int dev_id_1, int dev_id_2, u8 phy_port,
8588 int type)
8589 {
8590 u32 id = (dev_id_1 << 16) | dev_id_2;
8591 u8 idx;
8592
8593 if (dev_id_1 < 0 || dev_id_2 < 0)
8594 return 0;
8595 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8596 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8597 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
8598 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
8599 return 0;
8600 } else {
8601 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8602 return 0;
8603 }
8604
8605 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8606 parent->index, id,
8607 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8608 type == PHY_TYPE_PCS ? "PCS" : "MII",
8609 phy_port);
8610
8611 if (p->cur[type] >= NIU_MAX_PORTS) {
8612 pr_err("Too many PHY ports\n");
8613 return -EINVAL;
8614 }
8615 idx = p->cur[type];
8616 p->phy_id[type][idx] = id;
8617 p->phy_port[type][idx] = phy_port;
8618 p->cur[type] = idx + 1;
8619 return 0;
8620 }
8621
8622 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8623 {
8624 int i;
8625
8626 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8627 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8628 return 1;
8629 }
8630 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8631 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8632 return 1;
8633 }
8634
8635 return 0;
8636 }
8637
8638 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8639 {
8640 int port, cnt;
8641
8642 cnt = 0;
8643 *lowest = 32;
8644 for (port = 8; port < 32; port++) {
8645 if (port_has_10g(p, port)) {
8646 if (!cnt)
8647 *lowest = port;
8648 cnt++;
8649 }
8650 }
8651
8652 return cnt;
8653 }
8654
8655 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8656 {
8657 *lowest = 32;
8658 if (p->cur[PHY_TYPE_MII])
8659 *lowest = p->phy_port[PHY_TYPE_MII][0];
8660
8661 return p->cur[PHY_TYPE_MII];
8662 }
8663
8664 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8665 {
8666 int num_ports = parent->num_ports;
8667 int i;
8668
8669 for (i = 0; i < num_ports; i++) {
8670 parent->rxchan_per_port[i] = (16 / num_ports);
8671 parent->txchan_per_port[i] = (16 / num_ports);
8672
8673 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8674 parent->index, i,
8675 parent->rxchan_per_port[i],
8676 parent->txchan_per_port[i]);
8677 }
8678 }
8679
8680 static void __devinit niu_divide_channels(struct niu_parent *parent,
8681 int num_10g, int num_1g)
8682 {
8683 int num_ports = parent->num_ports;
8684 int rx_chans_per_10g, rx_chans_per_1g;
8685 int tx_chans_per_10g, tx_chans_per_1g;
8686 int i, tot_rx, tot_tx;
8687
8688 if (!num_10g || !num_1g) {
8689 rx_chans_per_10g = rx_chans_per_1g =
8690 (NIU_NUM_RXCHAN / num_ports);
8691 tx_chans_per_10g = tx_chans_per_1g =
8692 (NIU_NUM_TXCHAN / num_ports);
8693 } else {
8694 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8695 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8696 (rx_chans_per_1g * num_1g)) /
8697 num_10g;
8698
8699 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8700 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8701 (tx_chans_per_1g * num_1g)) /
8702 num_10g;
8703 }
8704
8705 tot_rx = tot_tx = 0;
8706 for (i = 0; i < num_ports; i++) {
8707 int type = phy_decode(parent->port_phy, i);
8708
8709 if (type == PORT_TYPE_10G) {
8710 parent->rxchan_per_port[i] = rx_chans_per_10g;
8711 parent->txchan_per_port[i] = tx_chans_per_10g;
8712 } else {
8713 parent->rxchan_per_port[i] = rx_chans_per_1g;
8714 parent->txchan_per_port[i] = tx_chans_per_1g;
8715 }
8716 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8717 parent->index, i,
8718 parent->rxchan_per_port[i],
8719 parent->txchan_per_port[i]);
8720 tot_rx += parent->rxchan_per_port[i];
8721 tot_tx += parent->txchan_per_port[i];
8722 }
8723
8724 if (tot_rx > NIU_NUM_RXCHAN) {
8725 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8726 parent->index, tot_rx);
8727 for (i = 0; i < num_ports; i++)
8728 parent->rxchan_per_port[i] = 1;
8729 }
8730 if (tot_tx > NIU_NUM_TXCHAN) {
8731 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8732 parent->index, tot_tx);
8733 for (i = 0; i < num_ports; i++)
8734 parent->txchan_per_port[i] = 1;
8735 }
8736 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8737 pr_warning("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8738 parent->index, tot_rx, tot_tx);
8739 }
8740 }
8741
8742 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8743 int num_10g, int num_1g)
8744 {
8745 int i, num_ports = parent->num_ports;
8746 int rdc_group, rdc_groups_per_port;
8747 int rdc_channel_base;
8748
8749 rdc_group = 0;
8750 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8751
8752 rdc_channel_base = 0;
8753
8754 for (i = 0; i < num_ports; i++) {
8755 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8756 int grp, num_channels = parent->rxchan_per_port[i];
8757 int this_channel_offset;
8758
8759 tp->first_table_num = rdc_group;
8760 tp->num_tables = rdc_groups_per_port;
8761 this_channel_offset = 0;
8762 for (grp = 0; grp < tp->num_tables; grp++) {
8763 struct rdc_table *rt = &tp->tables[grp];
8764 int slot;
8765
8766 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8767 parent->index, i, tp->first_table_num + grp);
8768 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8769 rt->rxdma_channel[slot] =
8770 rdc_channel_base + this_channel_offset;
8771
8772 pr_cont("%d ", rt->rxdma_channel[slot]);
8773
8774 if (++this_channel_offset == num_channels)
8775 this_channel_offset = 0;
8776 }
8777 pr_cont("]\n");
8778 }
8779
8780 parent->rdc_default[i] = rdc_channel_base;
8781
8782 rdc_channel_base += num_channels;
8783 rdc_group += rdc_groups_per_port;
8784 }
8785 }
8786
8787 static int __devinit fill_phy_probe_info(struct niu *np,
8788 struct niu_parent *parent,
8789 struct phy_probe_info *info)
8790 {
8791 unsigned long flags;
8792 int port, err;
8793
8794 memset(info, 0, sizeof(*info));
8795
8796 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8797 niu_lock_parent(np, flags);
8798 err = 0;
8799 for (port = 8; port < 32; port++) {
8800 int dev_id_1, dev_id_2;
8801
8802 dev_id_1 = mdio_read(np, port,
8803 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8804 dev_id_2 = mdio_read(np, port,
8805 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8806 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8807 PHY_TYPE_PMA_PMD);
8808 if (err)
8809 break;
8810 dev_id_1 = mdio_read(np, port,
8811 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8812 dev_id_2 = mdio_read(np, port,
8813 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8814 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8815 PHY_TYPE_PCS);
8816 if (err)
8817 break;
8818 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8819 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8820 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8821 PHY_TYPE_MII);
8822 if (err)
8823 break;
8824 }
8825 niu_unlock_parent(np, flags);
8826
8827 return err;
8828 }
8829
8830 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8831 {
8832 struct phy_probe_info *info = &parent->phy_probe_info;
8833 int lowest_10g, lowest_1g;
8834 int num_10g, num_1g;
8835 u32 val;
8836 int err;
8837
8838 num_10g = num_1g = 0;
8839
8840 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8841 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8842 num_10g = 0;
8843 num_1g = 2;
8844 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8845 parent->num_ports = 4;
8846 val = (phy_encode(PORT_TYPE_1G, 0) |
8847 phy_encode(PORT_TYPE_1G, 1) |
8848 phy_encode(PORT_TYPE_1G, 2) |
8849 phy_encode(PORT_TYPE_1G, 3));
8850 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8851 num_10g = 2;
8852 num_1g = 0;
8853 parent->num_ports = 2;
8854 val = (phy_encode(PORT_TYPE_10G, 0) |
8855 phy_encode(PORT_TYPE_10G, 1));
8856 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8857 (parent->plat_type == PLAT_TYPE_NIU)) {
8858 /* this is the Monza case */
8859 if (np->flags & NIU_FLAGS_10G) {
8860 val = (phy_encode(PORT_TYPE_10G, 0) |
8861 phy_encode(PORT_TYPE_10G, 1));
8862 } else {
8863 val = (phy_encode(PORT_TYPE_1G, 0) |
8864 phy_encode(PORT_TYPE_1G, 1));
8865 }
8866 } else {
8867 err = fill_phy_probe_info(np, parent, info);
8868 if (err)
8869 return err;
8870
8871 num_10g = count_10g_ports(info, &lowest_10g);
8872 num_1g = count_1g_ports(info, &lowest_1g);
8873
8874 switch ((num_10g << 4) | num_1g) {
8875 case 0x24:
8876 if (lowest_1g == 10)
8877 parent->plat_type = PLAT_TYPE_VF_P0;
8878 else if (lowest_1g == 26)
8879 parent->plat_type = PLAT_TYPE_VF_P1;
8880 else
8881 goto unknown_vg_1g_port;
8882
8883 /* fallthru */
8884 case 0x22:
8885 val = (phy_encode(PORT_TYPE_10G, 0) |
8886 phy_encode(PORT_TYPE_10G, 1) |
8887 phy_encode(PORT_TYPE_1G, 2) |
8888 phy_encode(PORT_TYPE_1G, 3));
8889 break;
8890
8891 case 0x20:
8892 val = (phy_encode(PORT_TYPE_10G, 0) |
8893 phy_encode(PORT_TYPE_10G, 1));
8894 break;
8895
8896 case 0x10:
8897 val = phy_encode(PORT_TYPE_10G, np->port);
8898 break;
8899
8900 case 0x14:
8901 if (lowest_1g == 10)
8902 parent->plat_type = PLAT_TYPE_VF_P0;
8903 else if (lowest_1g == 26)
8904 parent->plat_type = PLAT_TYPE_VF_P1;
8905 else
8906 goto unknown_vg_1g_port;
8907
8908 /* fallthru */
8909 case 0x13:
8910 if ((lowest_10g & 0x7) == 0)
8911 val = (phy_encode(PORT_TYPE_10G, 0) |
8912 phy_encode(PORT_TYPE_1G, 1) |
8913 phy_encode(PORT_TYPE_1G, 2) |
8914 phy_encode(PORT_TYPE_1G, 3));
8915 else
8916 val = (phy_encode(PORT_TYPE_1G, 0) |
8917 phy_encode(PORT_TYPE_10G, 1) |
8918 phy_encode(PORT_TYPE_1G, 2) |
8919 phy_encode(PORT_TYPE_1G, 3));
8920 break;
8921
8922 case 0x04:
8923 if (lowest_1g == 10)
8924 parent->plat_type = PLAT_TYPE_VF_P0;
8925 else if (lowest_1g == 26)
8926 parent->plat_type = PLAT_TYPE_VF_P1;
8927 else
8928 goto unknown_vg_1g_port;
8929
8930 val = (phy_encode(PORT_TYPE_1G, 0) |
8931 phy_encode(PORT_TYPE_1G, 1) |
8932 phy_encode(PORT_TYPE_1G, 2) |
8933 phy_encode(PORT_TYPE_1G, 3));
8934 break;
8935
8936 default:
8937 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8938 num_10g, num_1g);
8939 return -EINVAL;
8940 }
8941 }
8942
8943 parent->port_phy = val;
8944
8945 if (parent->plat_type == PLAT_TYPE_NIU)
8946 niu_n2_divide_channels(parent);
8947 else
8948 niu_divide_channels(parent, num_10g, num_1g);
8949
8950 niu_divide_rdc_groups(parent, num_10g, num_1g);
8951
8952 return 0;
8953
8954 unknown_vg_1g_port:
8955 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8956 return -EINVAL;
8957 }
8958
8959 static int __devinit niu_probe_ports(struct niu *np)
8960 {
8961 struct niu_parent *parent = np->parent;
8962 int err, i;
8963
8964 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8965 err = walk_phys(np, parent);
8966 if (err)
8967 return err;
8968
8969 niu_set_ldg_timer_res(np, 2);
8970 for (i = 0; i <= LDN_MAX; i++)
8971 niu_ldn_irq_enable(np, i, 0);
8972 }
8973
8974 if (parent->port_phy == PORT_PHY_INVALID)
8975 return -EINVAL;
8976
8977 return 0;
8978 }
8979
8980 static int __devinit niu_classifier_swstate_init(struct niu *np)
8981 {
8982 struct niu_classifier *cp = &np->clas;
8983
8984 cp->tcam_top = (u16) np->port;
8985 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8986 cp->h1_init = 0xffffffff;
8987 cp->h2_init = 0xffff;
8988
8989 return fflp_early_init(np);
8990 }
8991
8992 static void __devinit niu_link_config_init(struct niu *np)
8993 {
8994 struct niu_link_config *lp = &np->link_config;
8995
8996 lp->advertising = (ADVERTISED_10baseT_Half |
8997 ADVERTISED_10baseT_Full |
8998 ADVERTISED_100baseT_Half |
8999 ADVERTISED_100baseT_Full |
9000 ADVERTISED_1000baseT_Half |
9001 ADVERTISED_1000baseT_Full |
9002 ADVERTISED_10000baseT_Full |
9003 ADVERTISED_Autoneg);
9004 lp->speed = lp->active_speed = SPEED_INVALID;
9005 lp->duplex = DUPLEX_FULL;
9006 lp->active_duplex = DUPLEX_INVALID;
9007 lp->autoneg = 1;
9008 #if 0
9009 lp->loopback_mode = LOOPBACK_MAC;
9010 lp->active_speed = SPEED_10000;
9011 lp->active_duplex = DUPLEX_FULL;
9012 #else
9013 lp->loopback_mode = LOOPBACK_DISABLED;
9014 #endif
9015 }
9016
9017 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
9018 {
9019 switch (np->port) {
9020 case 0:
9021 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9022 np->ipp_off = 0x00000;
9023 np->pcs_off = 0x04000;
9024 np->xpcs_off = 0x02000;
9025 break;
9026
9027 case 1:
9028 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9029 np->ipp_off = 0x08000;
9030 np->pcs_off = 0x0a000;
9031 np->xpcs_off = 0x08000;
9032 break;
9033
9034 case 2:
9035 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9036 np->ipp_off = 0x04000;
9037 np->pcs_off = 0x0e000;
9038 np->xpcs_off = ~0UL;
9039 break;
9040
9041 case 3:
9042 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9043 np->ipp_off = 0x0c000;
9044 np->pcs_off = 0x12000;
9045 np->xpcs_off = ~0UL;
9046 break;
9047
9048 default:
9049 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9050 return -EINVAL;
9051 }
9052
9053 return 0;
9054 }
9055
9056 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9057 {
9058 struct msix_entry msi_vec[NIU_NUM_LDG];
9059 struct niu_parent *parent = np->parent;
9060 struct pci_dev *pdev = np->pdev;
9061 int i, num_irqs, err;
9062 u8 first_ldg;
9063
9064 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9065 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9066 ldg_num_map[i] = first_ldg + i;
9067
9068 num_irqs = (parent->rxchan_per_port[np->port] +
9069 parent->txchan_per_port[np->port] +
9070 (np->port == 0 ? 3 : 1));
9071 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9072
9073 retry:
9074 for (i = 0; i < num_irqs; i++) {
9075 msi_vec[i].vector = 0;
9076 msi_vec[i].entry = i;
9077 }
9078
9079 err = pci_enable_msix(pdev, msi_vec, num_irqs);
9080 if (err < 0) {
9081 np->flags &= ~NIU_FLAGS_MSIX;
9082 return;
9083 }
9084 if (err > 0) {
9085 num_irqs = err;
9086 goto retry;
9087 }
9088
9089 np->flags |= NIU_FLAGS_MSIX;
9090 for (i = 0; i < num_irqs; i++)
9091 np->ldg[i].irq = msi_vec[i].vector;
9092 np->num_ldg = num_irqs;
9093 }
9094
9095 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9096 {
9097 #ifdef CONFIG_SPARC64
9098 struct platform_device *op = np->op;
9099 const u32 *int_prop;
9100 int i;
9101
9102 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9103 if (!int_prop)
9104 return -ENODEV;
9105
9106 for (i = 0; i < op->archdata.num_irqs; i++) {
9107 ldg_num_map[i] = int_prop[i];
9108 np->ldg[i].irq = op->archdata.irqs[i];
9109 }
9110
9111 np->num_ldg = op->archdata.num_irqs;
9112
9113 return 0;
9114 #else
9115 return -EINVAL;
9116 #endif
9117 }
9118
9119 static int __devinit niu_ldg_init(struct niu *np)
9120 {
9121 struct niu_parent *parent = np->parent;
9122 u8 ldg_num_map[NIU_NUM_LDG];
9123 int first_chan, num_chan;
9124 int i, err, ldg_rotor;
9125 u8 port;
9126
9127 np->num_ldg = 1;
9128 np->ldg[0].irq = np->dev->irq;
9129 if (parent->plat_type == PLAT_TYPE_NIU) {
9130 err = niu_n2_irq_init(np, ldg_num_map);
9131 if (err)
9132 return err;
9133 } else
9134 niu_try_msix(np, ldg_num_map);
9135
9136 port = np->port;
9137 for (i = 0; i < np->num_ldg; i++) {
9138 struct niu_ldg *lp = &np->ldg[i];
9139
9140 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9141
9142 lp->np = np;
9143 lp->ldg_num = ldg_num_map[i];
9144 lp->timer = 2; /* XXX */
9145
9146 /* On N2 NIU the firmware has setup the SID mappings so they go
9147 * to the correct values that will route the LDG to the proper
9148 * interrupt in the NCU interrupt table.
9149 */
9150 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9151 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9152 if (err)
9153 return err;
9154 }
9155 }
9156
9157 /* We adopt the LDG assignment ordering used by the N2 NIU
9158 * 'interrupt' properties because that simplifies a lot of
9159 * things. This ordering is:
9160 *
9161 * MAC
9162 * MIF (if port zero)
9163 * SYSERR (if port zero)
9164 * RX channels
9165 * TX channels
9166 */
9167
9168 ldg_rotor = 0;
9169
9170 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9171 LDN_MAC(port));
9172 if (err)
9173 return err;
9174
9175 ldg_rotor++;
9176 if (ldg_rotor == np->num_ldg)
9177 ldg_rotor = 0;
9178
9179 if (port == 0) {
9180 err = niu_ldg_assign_ldn(np, parent,
9181 ldg_num_map[ldg_rotor],
9182 LDN_MIF);
9183 if (err)
9184 return err;
9185
9186 ldg_rotor++;
9187 if (ldg_rotor == np->num_ldg)
9188 ldg_rotor = 0;
9189
9190 err = niu_ldg_assign_ldn(np, parent,
9191 ldg_num_map[ldg_rotor],
9192 LDN_DEVICE_ERROR);
9193 if (err)
9194 return err;
9195
9196 ldg_rotor++;
9197 if (ldg_rotor == np->num_ldg)
9198 ldg_rotor = 0;
9199
9200 }
9201
9202 first_chan = 0;
9203 for (i = 0; i < port; i++)
9204 first_chan += parent->rxchan_per_port[i];
9205 num_chan = parent->rxchan_per_port[port];
9206
9207 for (i = first_chan; i < (first_chan + num_chan); i++) {
9208 err = niu_ldg_assign_ldn(np, parent,
9209 ldg_num_map[ldg_rotor],
9210 LDN_RXDMA(i));
9211 if (err)
9212 return err;
9213 ldg_rotor++;
9214 if (ldg_rotor == np->num_ldg)
9215 ldg_rotor = 0;
9216 }
9217
9218 first_chan = 0;
9219 for (i = 0; i < port; i++)
9220 first_chan += parent->txchan_per_port[i];
9221 num_chan = parent->txchan_per_port[port];
9222 for (i = first_chan; i < (first_chan + num_chan); i++) {
9223 err = niu_ldg_assign_ldn(np, parent,
9224 ldg_num_map[ldg_rotor],
9225 LDN_TXDMA(i));
9226 if (err)
9227 return err;
9228 ldg_rotor++;
9229 if (ldg_rotor == np->num_ldg)
9230 ldg_rotor = 0;
9231 }
9232
9233 return 0;
9234 }
9235
9236 static void __devexit niu_ldg_free(struct niu *np)
9237 {
9238 if (np->flags & NIU_FLAGS_MSIX)
9239 pci_disable_msix(np->pdev);
9240 }
9241
9242 static int __devinit niu_get_of_props(struct niu *np)
9243 {
9244 #ifdef CONFIG_SPARC64
9245 struct net_device *dev = np->dev;
9246 struct device_node *dp;
9247 const char *phy_type;
9248 const u8 *mac_addr;
9249 const char *model;
9250 int prop_len;
9251
9252 if (np->parent->plat_type == PLAT_TYPE_NIU)
9253 dp = np->op->dev.of_node;
9254 else
9255 dp = pci_device_to_OF_node(np->pdev);
9256
9257 phy_type = of_get_property(dp, "phy-type", &prop_len);
9258 if (!phy_type) {
9259 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9260 dp->full_name);
9261 return -EINVAL;
9262 }
9263
9264 if (!strcmp(phy_type, "none"))
9265 return -ENODEV;
9266
9267 strcpy(np->vpd.phy_type, phy_type);
9268
9269 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9270 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9271 dp->full_name, np->vpd.phy_type);
9272 return -EINVAL;
9273 }
9274
9275 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9276 if (!mac_addr) {
9277 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9278 dp->full_name);
9279 return -EINVAL;
9280 }
9281 if (prop_len != dev->addr_len) {
9282 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9283 dp->full_name, prop_len);
9284 }
9285 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9286 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9287 netdev_err(dev, "%s: OF MAC address is invalid\n",
9288 dp->full_name);
9289 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->perm_addr);
9290 return -EINVAL;
9291 }
9292
9293 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9294
9295 model = of_get_property(dp, "model", &prop_len);
9296
9297 if (model)
9298 strcpy(np->vpd.model, model);
9299
9300 if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9301 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9302 NIU_FLAGS_HOTPLUG_PHY);
9303 }
9304
9305 return 0;
9306 #else
9307 return -EINVAL;
9308 #endif
9309 }
9310
9311 static int __devinit niu_get_invariants(struct niu *np)
9312 {
9313 int err, have_props;
9314 u32 offset;
9315
9316 err = niu_get_of_props(np);
9317 if (err == -ENODEV)
9318 return err;
9319
9320 have_props = !err;
9321
9322 err = niu_init_mac_ipp_pcs_base(np);
9323 if (err)
9324 return err;
9325
9326 if (have_props) {
9327 err = niu_get_and_validate_port(np);
9328 if (err)
9329 return err;
9330
9331 } else {
9332 if (np->parent->plat_type == PLAT_TYPE_NIU)
9333 return -EINVAL;
9334
9335 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9336 offset = niu_pci_vpd_offset(np);
9337 netif_printk(np, probe, KERN_DEBUG, np->dev,
9338 "%s() VPD offset [%08x]\n", __func__, offset);
9339 if (offset)
9340 niu_pci_vpd_fetch(np, offset);
9341 nw64(ESPC_PIO_EN, 0);
9342
9343 if (np->flags & NIU_FLAGS_VPD_VALID) {
9344 niu_pci_vpd_validate(np);
9345 err = niu_get_and_validate_port(np);
9346 if (err)
9347 return err;
9348 }
9349
9350 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9351 err = niu_get_and_validate_port(np);
9352 if (err)
9353 return err;
9354 err = niu_pci_probe_sprom(np);
9355 if (err)
9356 return err;
9357 }
9358 }
9359
9360 err = niu_probe_ports(np);
9361 if (err)
9362 return err;
9363
9364 niu_ldg_init(np);
9365
9366 niu_classifier_swstate_init(np);
9367 niu_link_config_init(np);
9368
9369 err = niu_determine_phy_disposition(np);
9370 if (!err)
9371 err = niu_init_link(np);
9372
9373 return err;
9374 }
9375
9376 static LIST_HEAD(niu_parent_list);
9377 static DEFINE_MUTEX(niu_parent_lock);
9378 static int niu_parent_index;
9379
9380 static ssize_t show_port_phy(struct device *dev,
9381 struct device_attribute *attr, char *buf)
9382 {
9383 struct platform_device *plat_dev = to_platform_device(dev);
9384 struct niu_parent *p = plat_dev->dev.platform_data;
9385 u32 port_phy = p->port_phy;
9386 char *orig_buf = buf;
9387 int i;
9388
9389 if (port_phy == PORT_PHY_UNKNOWN ||
9390 port_phy == PORT_PHY_INVALID)
9391 return 0;
9392
9393 for (i = 0; i < p->num_ports; i++) {
9394 const char *type_str;
9395 int type;
9396
9397 type = phy_decode(port_phy, i);
9398 if (type == PORT_TYPE_10G)
9399 type_str = "10G";
9400 else
9401 type_str = "1G";
9402 buf += sprintf(buf,
9403 (i == 0) ? "%s" : " %s",
9404 type_str);
9405 }
9406 buf += sprintf(buf, "\n");
9407 return buf - orig_buf;
9408 }
9409
9410 static ssize_t show_plat_type(struct device *dev,
9411 struct device_attribute *attr, char *buf)
9412 {
9413 struct platform_device *plat_dev = to_platform_device(dev);
9414 struct niu_parent *p = plat_dev->dev.platform_data;
9415 const char *type_str;
9416
9417 switch (p->plat_type) {
9418 case PLAT_TYPE_ATLAS:
9419 type_str = "atlas";
9420 break;
9421 case PLAT_TYPE_NIU:
9422 type_str = "niu";
9423 break;
9424 case PLAT_TYPE_VF_P0:
9425 type_str = "vf_p0";
9426 break;
9427 case PLAT_TYPE_VF_P1:
9428 type_str = "vf_p1";
9429 break;
9430 default:
9431 type_str = "unknown";
9432 break;
9433 }
9434
9435 return sprintf(buf, "%s\n", type_str);
9436 }
9437
9438 static ssize_t __show_chan_per_port(struct device *dev,
9439 struct device_attribute *attr, char *buf,
9440 int rx)
9441 {
9442 struct platform_device *plat_dev = to_platform_device(dev);
9443 struct niu_parent *p = plat_dev->dev.platform_data;
9444 char *orig_buf = buf;
9445 u8 *arr;
9446 int i;
9447
9448 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9449
9450 for (i = 0; i < p->num_ports; i++) {
9451 buf += sprintf(buf,
9452 (i == 0) ? "%d" : " %d",
9453 arr[i]);
9454 }
9455 buf += sprintf(buf, "\n");
9456
9457 return buf - orig_buf;
9458 }
9459
9460 static ssize_t show_rxchan_per_port(struct device *dev,
9461 struct device_attribute *attr, char *buf)
9462 {
9463 return __show_chan_per_port(dev, attr, buf, 1);
9464 }
9465
9466 static ssize_t show_txchan_per_port(struct device *dev,
9467 struct device_attribute *attr, char *buf)
9468 {
9469 return __show_chan_per_port(dev, attr, buf, 1);
9470 }
9471
9472 static ssize_t show_num_ports(struct device *dev,
9473 struct device_attribute *attr, char *buf)
9474 {
9475 struct platform_device *plat_dev = to_platform_device(dev);
9476 struct niu_parent *p = plat_dev->dev.platform_data;
9477
9478 return sprintf(buf, "%d\n", p->num_ports);
9479 }
9480
9481 static struct device_attribute niu_parent_attributes[] = {
9482 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9483 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9484 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9485 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9486 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9487 {}
9488 };
9489
9490 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9491 union niu_parent_id *id,
9492 u8 ptype)
9493 {
9494 struct platform_device *plat_dev;
9495 struct niu_parent *p;
9496 int i;
9497
9498 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9499 NULL, 0);
9500 if (IS_ERR(plat_dev))
9501 return NULL;
9502
9503 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9504 int err = device_create_file(&plat_dev->dev,
9505 &niu_parent_attributes[i]);
9506 if (err)
9507 goto fail_unregister;
9508 }
9509
9510 p = kzalloc(sizeof(*p), GFP_KERNEL);
9511 if (!p)
9512 goto fail_unregister;
9513
9514 p->index = niu_parent_index++;
9515
9516 plat_dev->dev.platform_data = p;
9517 p->plat_dev = plat_dev;
9518
9519 memcpy(&p->id, id, sizeof(*id));
9520 p->plat_type = ptype;
9521 INIT_LIST_HEAD(&p->list);
9522 atomic_set(&p->refcnt, 0);
9523 list_add(&p->list, &niu_parent_list);
9524 spin_lock_init(&p->lock);
9525
9526 p->rxdma_clock_divider = 7500;
9527
9528 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9529 if (p->plat_type == PLAT_TYPE_NIU)
9530 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9531
9532 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9533 int index = i - CLASS_CODE_USER_PROG1;
9534
9535 p->tcam_key[index] = TCAM_KEY_TSEL;
9536 p->flow_key[index] = (FLOW_KEY_IPSA |
9537 FLOW_KEY_IPDA |
9538 FLOW_KEY_PROTO |
9539 (FLOW_KEY_L4_BYTE12 <<
9540 FLOW_KEY_L4_0_SHIFT) |
9541 (FLOW_KEY_L4_BYTE12 <<
9542 FLOW_KEY_L4_1_SHIFT));
9543 }
9544
9545 for (i = 0; i < LDN_MAX + 1; i++)
9546 p->ldg_map[i] = LDG_INVALID;
9547
9548 return p;
9549
9550 fail_unregister:
9551 platform_device_unregister(plat_dev);
9552 return NULL;
9553 }
9554
9555 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9556 union niu_parent_id *id,
9557 u8 ptype)
9558 {
9559 struct niu_parent *p, *tmp;
9560 int port = np->port;
9561
9562 mutex_lock(&niu_parent_lock);
9563 p = NULL;
9564 list_for_each_entry(tmp, &niu_parent_list, list) {
9565 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9566 p = tmp;
9567 break;
9568 }
9569 }
9570 if (!p)
9571 p = niu_new_parent(np, id, ptype);
9572
9573 if (p) {
9574 char port_name[6];
9575 int err;
9576
9577 sprintf(port_name, "port%d", port);
9578 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9579 &np->device->kobj,
9580 port_name);
9581 if (!err) {
9582 p->ports[port] = np;
9583 atomic_inc(&p->refcnt);
9584 }
9585 }
9586 mutex_unlock(&niu_parent_lock);
9587
9588 return p;
9589 }
9590
9591 static void niu_put_parent(struct niu *np)
9592 {
9593 struct niu_parent *p = np->parent;
9594 u8 port = np->port;
9595 char port_name[6];
9596
9597 BUG_ON(!p || p->ports[port] != np);
9598
9599 netif_printk(np, probe, KERN_DEBUG, np->dev,
9600 "%s() port[%u]\n", __func__, port);
9601
9602 sprintf(port_name, "port%d", port);
9603
9604 mutex_lock(&niu_parent_lock);
9605
9606 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9607
9608 p->ports[port] = NULL;
9609 np->parent = NULL;
9610
9611 if (atomic_dec_and_test(&p->refcnt)) {
9612 list_del(&p->list);
9613 platform_device_unregister(p->plat_dev);
9614 }
9615
9616 mutex_unlock(&niu_parent_lock);
9617 }
9618
9619 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9620 u64 *handle, gfp_t flag)
9621 {
9622 dma_addr_t dh;
9623 void *ret;
9624
9625 ret = dma_alloc_coherent(dev, size, &dh, flag);
9626 if (ret)
9627 *handle = dh;
9628 return ret;
9629 }
9630
9631 static void niu_pci_free_coherent(struct device *dev, size_t size,
9632 void *cpu_addr, u64 handle)
9633 {
9634 dma_free_coherent(dev, size, cpu_addr, handle);
9635 }
9636
9637 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9638 unsigned long offset, size_t size,
9639 enum dma_data_direction direction)
9640 {
9641 return dma_map_page(dev, page, offset, size, direction);
9642 }
9643
9644 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9645 size_t size, enum dma_data_direction direction)
9646 {
9647 dma_unmap_page(dev, dma_address, size, direction);
9648 }
9649
9650 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9651 size_t size,
9652 enum dma_data_direction direction)
9653 {
9654 return dma_map_single(dev, cpu_addr, size, direction);
9655 }
9656
9657 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9658 size_t size,
9659 enum dma_data_direction direction)
9660 {
9661 dma_unmap_single(dev, dma_address, size, direction);
9662 }
9663
9664 static const struct niu_ops niu_pci_ops = {
9665 .alloc_coherent = niu_pci_alloc_coherent,
9666 .free_coherent = niu_pci_free_coherent,
9667 .map_page = niu_pci_map_page,
9668 .unmap_page = niu_pci_unmap_page,
9669 .map_single = niu_pci_map_single,
9670 .unmap_single = niu_pci_unmap_single,
9671 };
9672
9673 static void __devinit niu_driver_version(void)
9674 {
9675 static int niu_version_printed;
9676
9677 if (niu_version_printed++ == 0)
9678 pr_info("%s", version);
9679 }
9680
9681 static struct net_device * __devinit niu_alloc_and_init(
9682 struct device *gen_dev, struct pci_dev *pdev,
9683 struct platform_device *op, const struct niu_ops *ops,
9684 u8 port)
9685 {
9686 struct net_device *dev;
9687 struct niu *np;
9688
9689 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9690 if (!dev) {
9691 dev_err(gen_dev, "Etherdev alloc failed, aborting\n");
9692 return NULL;
9693 }
9694
9695 SET_NETDEV_DEV(dev, gen_dev);
9696
9697 np = netdev_priv(dev);
9698 np->dev = dev;
9699 np->pdev = pdev;
9700 np->op = op;
9701 np->device = gen_dev;
9702 np->ops = ops;
9703
9704 np->msg_enable = niu_debug;
9705
9706 spin_lock_init(&np->lock);
9707 INIT_WORK(&np->reset_task, niu_reset_task);
9708
9709 np->port = port;
9710
9711 return dev;
9712 }
9713
9714 static const struct net_device_ops niu_netdev_ops = {
9715 .ndo_open = niu_open,
9716 .ndo_stop = niu_close,
9717 .ndo_start_xmit = niu_start_xmit,
9718 .ndo_get_stats64 = niu_get_stats,
9719 .ndo_set_multicast_list = niu_set_rx_mode,
9720 .ndo_validate_addr = eth_validate_addr,
9721 .ndo_set_mac_address = niu_set_mac_addr,
9722 .ndo_do_ioctl = niu_ioctl,
9723 .ndo_tx_timeout = niu_tx_timeout,
9724 .ndo_change_mtu = niu_change_mtu,
9725 };
9726
9727 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9728 {
9729 dev->netdev_ops = &niu_netdev_ops;
9730 dev->ethtool_ops = &niu_ethtool_ops;
9731 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9732 }
9733
9734 static void __devinit niu_device_announce(struct niu *np)
9735 {
9736 struct net_device *dev = np->dev;
9737
9738 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9739
9740 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9741 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9742 dev->name,
9743 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9744 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9745 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9746 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9747 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9748 np->vpd.phy_type);
9749 } else {
9750 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9751 dev->name,
9752 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9753 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9754 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9755 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9756 "COPPER")),
9757 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9758 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9759 np->vpd.phy_type);
9760 }
9761 }
9762
9763 static void __devinit niu_set_basic_features(struct net_device *dev)
9764 {
9765 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9766 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9767 }
9768
9769 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9770 const struct pci_device_id *ent)
9771 {
9772 union niu_parent_id parent_id;
9773 struct net_device *dev;
9774 struct niu *np;
9775 int err, pos;
9776 u64 dma_mask;
9777 u16 val16;
9778
9779 niu_driver_version();
9780
9781 err = pci_enable_device(pdev);
9782 if (err) {
9783 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9784 return err;
9785 }
9786
9787 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9788 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9789 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9790 err = -ENODEV;
9791 goto err_out_disable_pdev;
9792 }
9793
9794 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9795 if (err) {
9796 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9797 goto err_out_disable_pdev;
9798 }
9799
9800 pos = pci_pcie_cap(pdev);
9801 if (pos <= 0) {
9802 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9803 goto err_out_free_res;
9804 }
9805
9806 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9807 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9808 if (!dev) {
9809 err = -ENOMEM;
9810 goto err_out_free_res;
9811 }
9812 np = netdev_priv(dev);
9813
9814 memset(&parent_id, 0, sizeof(parent_id));
9815 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9816 parent_id.pci.bus = pdev->bus->number;
9817 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9818
9819 np->parent = niu_get_parent(np, &parent_id,
9820 PLAT_TYPE_ATLAS);
9821 if (!np->parent) {
9822 err = -ENOMEM;
9823 goto err_out_free_dev;
9824 }
9825
9826 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9827 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9828 val16 |= (PCI_EXP_DEVCTL_CERE |
9829 PCI_EXP_DEVCTL_NFERE |
9830 PCI_EXP_DEVCTL_FERE |
9831 PCI_EXP_DEVCTL_URRE |
9832 PCI_EXP_DEVCTL_RELAX_EN);
9833 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9834
9835 dma_mask = DMA_BIT_MASK(44);
9836 err = pci_set_dma_mask(pdev, dma_mask);
9837 if (!err) {
9838 dev->features |= NETIF_F_HIGHDMA;
9839 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9840 if (err) {
9841 dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9842 goto err_out_release_parent;
9843 }
9844 }
9845 if (err || dma_mask == DMA_BIT_MASK(32)) {
9846 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9847 if (err) {
9848 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9849 goto err_out_release_parent;
9850 }
9851 }
9852
9853 niu_set_basic_features(dev);
9854
9855 np->regs = pci_ioremap_bar(pdev, 0);
9856 if (!np->regs) {
9857 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9858 err = -ENOMEM;
9859 goto err_out_release_parent;
9860 }
9861
9862 pci_set_master(pdev);
9863 pci_save_state(pdev);
9864
9865 dev->irq = pdev->irq;
9866
9867 niu_assign_netdev_ops(dev);
9868
9869 err = niu_get_invariants(np);
9870 if (err) {
9871 if (err != -ENODEV)
9872 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9873 goto err_out_iounmap;
9874 }
9875
9876 err = register_netdev(dev);
9877 if (err) {
9878 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9879 goto err_out_iounmap;
9880 }
9881
9882 pci_set_drvdata(pdev, dev);
9883
9884 niu_device_announce(np);
9885
9886 return 0;
9887
9888 err_out_iounmap:
9889 if (np->regs) {
9890 iounmap(np->regs);
9891 np->regs = NULL;
9892 }
9893
9894 err_out_release_parent:
9895 niu_put_parent(np);
9896
9897 err_out_free_dev:
9898 free_netdev(dev);
9899
9900 err_out_free_res:
9901 pci_release_regions(pdev);
9902
9903 err_out_disable_pdev:
9904 pci_disable_device(pdev);
9905 pci_set_drvdata(pdev, NULL);
9906
9907 return err;
9908 }
9909
9910 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9911 {
9912 struct net_device *dev = pci_get_drvdata(pdev);
9913
9914 if (dev) {
9915 struct niu *np = netdev_priv(dev);
9916
9917 unregister_netdev(dev);
9918 if (np->regs) {
9919 iounmap(np->regs);
9920 np->regs = NULL;
9921 }
9922
9923 niu_ldg_free(np);
9924
9925 niu_put_parent(np);
9926
9927 free_netdev(dev);
9928 pci_release_regions(pdev);
9929 pci_disable_device(pdev);
9930 pci_set_drvdata(pdev, NULL);
9931 }
9932 }
9933
9934 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9935 {
9936 struct net_device *dev = pci_get_drvdata(pdev);
9937 struct niu *np = netdev_priv(dev);
9938 unsigned long flags;
9939
9940 if (!netif_running(dev))
9941 return 0;
9942
9943 flush_work_sync(&np->reset_task);
9944 niu_netif_stop(np);
9945
9946 del_timer_sync(&np->timer);
9947
9948 spin_lock_irqsave(&np->lock, flags);
9949 niu_enable_interrupts(np, 0);
9950 spin_unlock_irqrestore(&np->lock, flags);
9951
9952 netif_device_detach(dev);
9953
9954 spin_lock_irqsave(&np->lock, flags);
9955 niu_stop_hw(np);
9956 spin_unlock_irqrestore(&np->lock, flags);
9957
9958 pci_save_state(pdev);
9959
9960 return 0;
9961 }
9962
9963 static int niu_resume(struct pci_dev *pdev)
9964 {
9965 struct net_device *dev = pci_get_drvdata(pdev);
9966 struct niu *np = netdev_priv(dev);
9967 unsigned long flags;
9968 int err;
9969
9970 if (!netif_running(dev))
9971 return 0;
9972
9973 pci_restore_state(pdev);
9974
9975 netif_device_attach(dev);
9976
9977 spin_lock_irqsave(&np->lock, flags);
9978
9979 err = niu_init_hw(np);
9980 if (!err) {
9981 np->timer.expires = jiffies + HZ;
9982 add_timer(&np->timer);
9983 niu_netif_start(np);
9984 }
9985
9986 spin_unlock_irqrestore(&np->lock, flags);
9987
9988 return err;
9989 }
9990
9991 static struct pci_driver niu_pci_driver = {
9992 .name = DRV_MODULE_NAME,
9993 .id_table = niu_pci_tbl,
9994 .probe = niu_pci_init_one,
9995 .remove = __devexit_p(niu_pci_remove_one),
9996 .suspend = niu_suspend,
9997 .resume = niu_resume,
9998 };
9999
10000 #ifdef CONFIG_SPARC64
10001 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
10002 u64 *dma_addr, gfp_t flag)
10003 {
10004 unsigned long order = get_order(size);
10005 unsigned long page = __get_free_pages(flag, order);
10006
10007 if (page == 0UL)
10008 return NULL;
10009 memset((char *)page, 0, PAGE_SIZE << order);
10010 *dma_addr = __pa(page);
10011
10012 return (void *) page;
10013 }
10014
10015 static void niu_phys_free_coherent(struct device *dev, size_t size,
10016 void *cpu_addr, u64 handle)
10017 {
10018 unsigned long order = get_order(size);
10019
10020 free_pages((unsigned long) cpu_addr, order);
10021 }
10022
10023 static u64 niu_phys_map_page(struct device *dev, struct page *page,
10024 unsigned long offset, size_t size,
10025 enum dma_data_direction direction)
10026 {
10027 return page_to_phys(page) + offset;
10028 }
10029
10030 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10031 size_t size, enum dma_data_direction direction)
10032 {
10033 /* Nothing to do. */
10034 }
10035
10036 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10037 size_t size,
10038 enum dma_data_direction direction)
10039 {
10040 return __pa(cpu_addr);
10041 }
10042
10043 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10044 size_t size,
10045 enum dma_data_direction direction)
10046 {
10047 /* Nothing to do. */
10048 }
10049
10050 static const struct niu_ops niu_phys_ops = {
10051 .alloc_coherent = niu_phys_alloc_coherent,
10052 .free_coherent = niu_phys_free_coherent,
10053 .map_page = niu_phys_map_page,
10054 .unmap_page = niu_phys_unmap_page,
10055 .map_single = niu_phys_map_single,
10056 .unmap_single = niu_phys_unmap_single,
10057 };
10058
10059 static int __devinit niu_of_probe(struct platform_device *op)
10060 {
10061 union niu_parent_id parent_id;
10062 struct net_device *dev;
10063 struct niu *np;
10064 const u32 *reg;
10065 int err;
10066
10067 niu_driver_version();
10068
10069 reg = of_get_property(op->dev.of_node, "reg", NULL);
10070 if (!reg) {
10071 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10072 op->dev.of_node->full_name);
10073 return -ENODEV;
10074 }
10075
10076 dev = niu_alloc_and_init(&op->dev, NULL, op,
10077 &niu_phys_ops, reg[0] & 0x1);
10078 if (!dev) {
10079 err = -ENOMEM;
10080 goto err_out;
10081 }
10082 np = netdev_priv(dev);
10083
10084 memset(&parent_id, 0, sizeof(parent_id));
10085 parent_id.of = of_get_parent(op->dev.of_node);
10086
10087 np->parent = niu_get_parent(np, &parent_id,
10088 PLAT_TYPE_NIU);
10089 if (!np->parent) {
10090 err = -ENOMEM;
10091 goto err_out_free_dev;
10092 }
10093
10094 niu_set_basic_features(dev);
10095
10096 np->regs = of_ioremap(&op->resource[1], 0,
10097 resource_size(&op->resource[1]),
10098 "niu regs");
10099 if (!np->regs) {
10100 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10101 err = -ENOMEM;
10102 goto err_out_release_parent;
10103 }
10104
10105 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10106 resource_size(&op->resource[2]),
10107 "niu vregs-1");
10108 if (!np->vir_regs_1) {
10109 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10110 err = -ENOMEM;
10111 goto err_out_iounmap;
10112 }
10113
10114 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10115 resource_size(&op->resource[3]),
10116 "niu vregs-2");
10117 if (!np->vir_regs_2) {
10118 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10119 err = -ENOMEM;
10120 goto err_out_iounmap;
10121 }
10122
10123 niu_assign_netdev_ops(dev);
10124
10125 err = niu_get_invariants(np);
10126 if (err) {
10127 if (err != -ENODEV)
10128 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10129 goto err_out_iounmap;
10130 }
10131
10132 err = register_netdev(dev);
10133 if (err) {
10134 dev_err(&op->dev, "Cannot register net device, aborting\n");
10135 goto err_out_iounmap;
10136 }
10137
10138 dev_set_drvdata(&op->dev, dev);
10139
10140 niu_device_announce(np);
10141
10142 return 0;
10143
10144 err_out_iounmap:
10145 if (np->vir_regs_1) {
10146 of_iounmap(&op->resource[2], np->vir_regs_1,
10147 resource_size(&op->resource[2]));
10148 np->vir_regs_1 = NULL;
10149 }
10150
10151 if (np->vir_regs_2) {
10152 of_iounmap(&op->resource[3], np->vir_regs_2,
10153 resource_size(&op->resource[3]));
10154 np->vir_regs_2 = NULL;
10155 }
10156
10157 if (np->regs) {
10158 of_iounmap(&op->resource[1], np->regs,
10159 resource_size(&op->resource[1]));
10160 np->regs = NULL;
10161 }
10162
10163 err_out_release_parent:
10164 niu_put_parent(np);
10165
10166 err_out_free_dev:
10167 free_netdev(dev);
10168
10169 err_out:
10170 return err;
10171 }
10172
10173 static int __devexit niu_of_remove(struct platform_device *op)
10174 {
10175 struct net_device *dev = dev_get_drvdata(&op->dev);
10176
10177 if (dev) {
10178 struct niu *np = netdev_priv(dev);
10179
10180 unregister_netdev(dev);
10181
10182 if (np->vir_regs_1) {
10183 of_iounmap(&op->resource[2], np->vir_regs_1,
10184 resource_size(&op->resource[2]));
10185 np->vir_regs_1 = NULL;
10186 }
10187
10188 if (np->vir_regs_2) {
10189 of_iounmap(&op->resource[3], np->vir_regs_2,
10190 resource_size(&op->resource[3]));
10191 np->vir_regs_2 = NULL;
10192 }
10193
10194 if (np->regs) {
10195 of_iounmap(&op->resource[1], np->regs,
10196 resource_size(&op->resource[1]));
10197 np->regs = NULL;
10198 }
10199
10200 niu_ldg_free(np);
10201
10202 niu_put_parent(np);
10203
10204 free_netdev(dev);
10205 dev_set_drvdata(&op->dev, NULL);
10206 }
10207 return 0;
10208 }
10209
10210 static const struct of_device_id niu_match[] = {
10211 {
10212 .name = "network",
10213 .compatible = "SUNW,niusl",
10214 },
10215 {},
10216 };
10217 MODULE_DEVICE_TABLE(of, niu_match);
10218
10219 static struct platform_driver niu_of_driver = {
10220 .driver = {
10221 .name = "niu",
10222 .owner = THIS_MODULE,
10223 .of_match_table = niu_match,
10224 },
10225 .probe = niu_of_probe,
10226 .remove = __devexit_p(niu_of_remove),
10227 };
10228
10229 #endif /* CONFIG_SPARC64 */
10230
10231 static int __init niu_init(void)
10232 {
10233 int err = 0;
10234
10235 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10236
10237 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10238
10239 #ifdef CONFIG_SPARC64
10240 err = platform_driver_register(&niu_of_driver);
10241 #endif
10242
10243 if (!err) {
10244 err = pci_register_driver(&niu_pci_driver);
10245 #ifdef CONFIG_SPARC64
10246 if (err)
10247 platform_driver_unregister(&niu_of_driver);
10248 #endif
10249 }
10250
10251 return err;
10252 }
10253
10254 static void __exit niu_exit(void)
10255 {
10256 pci_unregister_driver(&niu_pci_driver);
10257 #ifdef CONFIG_SPARC64
10258 platform_driver_unregister(&niu_of_driver);
10259 #endif
10260 }
10261
10262 module_init(niu_init);
10263 module_exit(niu_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree