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1/* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8#include <linux/module.h>
9#include <linux/init.h>
10#include <linux/interrupt.h>
11#include <linux/pci.h>
12#include <linux/dma-mapping.h>
13#include <linux/netdevice.h>
14#include <linux/ethtool.h>
15#include <linux/etherdevice.h>
16#include <linux/platform_device.h>
17#include <linux/delay.h>
18#include <linux/bitops.h>
19#include <linux/mii.h>
20#include <linux/if.h>
21#include <linux/if_ether.h>
22#include <linux/if_vlan.h>
23#include <linux/ip.h>
24#include <linux/in.h>
25#include <linux/ipv6.h>
26#include <linux/log2.h>
27#include <linux/jiffies.h>
28#include <linux/crc32.h>
29#include <linux/list.h>
30#include <linux/slab.h>
31
32#include <linux/io.h>
33#include <linux/of_device.h>
34
35#include "niu.h"
36
37#define DRV_MODULE_NAME "niu"
38#define DRV_MODULE_VERSION "1.1"
39#define DRV_MODULE_RELDATE "Apr 22, 2010"
40
41static char version[] __devinitdata =
42 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
43
44MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
45MODULE_DESCRIPTION("NIU ethernet driver");
46MODULE_LICENSE("GPL");
47MODULE_VERSION(DRV_MODULE_VERSION);
48
49#ifndef readq
50static u64 readq(void __iomem *reg)
51{
52 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
53}
54
55static void writeq(u64 val, void __iomem *reg)
56{
57 writel(val & 0xffffffff, reg);
58 writel(val >> 32, reg + 0x4UL);
59}
60#endif
61
62static DEFINE_PCI_DEVICE_TABLE(niu_pci_tbl) = {
63 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
64 {}
65};
66
67MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
68
69#define NIU_TX_TIMEOUT (5 * HZ)
70
71#define nr64(reg) readq(np->regs + (reg))
72#define nw64(reg, val) writeq((val), np->regs + (reg))
73
74#define nr64_mac(reg) readq(np->mac_regs + (reg))
75#define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
76
77#define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
78#define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
79
80#define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
81#define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
82
83#define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
84#define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
85
86#define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
87
88static int niu_debug;
89static int debug = -1;
90module_param(debug, int, 0);
91MODULE_PARM_DESC(debug, "NIU debug level");
92
93#define niu_lock_parent(np, flags) \
94 spin_lock_irqsave(&np->parent->lock, flags)
95#define niu_unlock_parent(np, flags) \
96 spin_unlock_irqrestore(&np->parent->lock, flags)
97
98static int serdes_init_10g_serdes(struct niu *np);
99
100static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
101 u64 bits, int limit, int delay)
102{
103 while (--limit >= 0) {
104 u64 val = nr64_mac(reg);
105
106 if (!(val & bits))
107 break;
108 udelay(delay);
109 }
110 if (limit < 0)
111 return -ENODEV;
112 return 0;
113}
114
115static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
116 u64 bits, int limit, int delay,
117 const char *reg_name)
118{
119 int err;
120
121 nw64_mac(reg, bits);
122 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
123 if (err)
124 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
125 (unsigned long long)bits, reg_name,
126 (unsigned long long)nr64_mac(reg));
127 return err;
128}
129
130#define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
131({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
132 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
133})
134
135static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
136 u64 bits, int limit, int delay)
137{
138 while (--limit >= 0) {
139 u64 val = nr64_ipp(reg);
140
141 if (!(val & bits))
142 break;
143 udelay(delay);
144 }
145 if (limit < 0)
146 return -ENODEV;
147 return 0;
148}
149
150static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
151 u64 bits, int limit, int delay,
152 const char *reg_name)
153{
154 int err;
155 u64 val;
156
157 val = nr64_ipp(reg);
158 val |= bits;
159 nw64_ipp(reg, val);
160
161 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
162 if (err)
163 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
164 (unsigned long long)bits, reg_name,
165 (unsigned long long)nr64_ipp(reg));
166 return err;
167}
168
169#define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
170({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
171 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
172})
173
174static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
175 u64 bits, int limit, int delay)
176{
177 while (--limit >= 0) {
178 u64 val = nr64(reg);
179
180 if (!(val & bits))
181 break;
182 udelay(delay);
183 }
184 if (limit < 0)
185 return -ENODEV;
186 return 0;
187}
188
189#define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
190({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
191 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
192})
193
194static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
195 u64 bits, int limit, int delay,
196 const char *reg_name)
197{
198 int err;
199
200 nw64(reg, bits);
201 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
202 if (err)
203 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
204 (unsigned long long)bits, reg_name,
205 (unsigned long long)nr64(reg));
206 return err;
207}
208
209#define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
210({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
211 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
212})
213
214static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
215{
216 u64 val = (u64) lp->timer;
217
218 if (on)
219 val |= LDG_IMGMT_ARM;
220
221 nw64(LDG_IMGMT(lp->ldg_num), val);
222}
223
224static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
225{
226 unsigned long mask_reg, bits;
227 u64 val;
228
229 if (ldn < 0 || ldn > LDN_MAX)
230 return -EINVAL;
231
232 if (ldn < 64) {
233 mask_reg = LD_IM0(ldn);
234 bits = LD_IM0_MASK;
235 } else {
236 mask_reg = LD_IM1(ldn - 64);
237 bits = LD_IM1_MASK;
238 }
239
240 val = nr64(mask_reg);
241 if (on)
242 val &= ~bits;
243 else
244 val |= bits;
245 nw64(mask_reg, val);
246
247 return 0;
248}
249
250static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
251{
252 struct niu_parent *parent = np->parent;
253 int i;
254
255 for (i = 0; i <= LDN_MAX; i++) {
256 int err;
257
258 if (parent->ldg_map[i] != lp->ldg_num)
259 continue;
260
261 err = niu_ldn_irq_enable(np, i, on);
262 if (err)
263 return err;
264 }
265 return 0;
266}
267
268static int niu_enable_interrupts(struct niu *np, int on)
269{
270 int i;
271
272 for (i = 0; i < np->num_ldg; i++) {
273 struct niu_ldg *lp = &np->ldg[i];
274 int err;
275
276 err = niu_enable_ldn_in_ldg(np, lp, on);
277 if (err)
278 return err;
279 }
280 for (i = 0; i < np->num_ldg; i++)
281 niu_ldg_rearm(np, &np->ldg[i], on);
282
283 return 0;
284}
285
286static u32 phy_encode(u32 type, int port)
287{
288 return type << (port * 2);
289}
290
291static u32 phy_decode(u32 val, int port)
292{
293 return (val >> (port * 2)) & PORT_TYPE_MASK;
294}
295
296static int mdio_wait(struct niu *np)
297{
298 int limit = 1000;
299 u64 val;
300
301 while (--limit > 0) {
302 val = nr64(MIF_FRAME_OUTPUT);
303 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
304 return val & MIF_FRAME_OUTPUT_DATA;
305
306 udelay(10);
307 }
308
309 return -ENODEV;
310}
311
312static int mdio_read(struct niu *np, int port, int dev, int reg)
313{
314 int err;
315
316 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
317 err = mdio_wait(np);
318 if (err < 0)
319 return err;
320
321 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
322 return mdio_wait(np);
323}
324
325static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
326{
327 int err;
328
329 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
330 err = mdio_wait(np);
331 if (err < 0)
332 return err;
333
334 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
335 err = mdio_wait(np);
336 if (err < 0)
337 return err;
338
339 return 0;
340}
341
342static int mii_read(struct niu *np, int port, int reg)
343{
344 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
345 return mdio_wait(np);
346}
347
348static int mii_write(struct niu *np, int port, int reg, int data)
349{
350 int err;
351
352 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
353 err = mdio_wait(np);
354 if (err < 0)
355 return err;
356
357 return 0;
358}
359
360static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
361{
362 int err;
363
364 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
365 ESR2_TI_PLL_TX_CFG_L(channel),
366 val & 0xffff);
367 if (!err)
368 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
369 ESR2_TI_PLL_TX_CFG_H(channel),
370 val >> 16);
371 return err;
372}
373
374static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
375{
376 int err;
377
378 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
379 ESR2_TI_PLL_RX_CFG_L(channel),
380 val & 0xffff);
381 if (!err)
382 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
383 ESR2_TI_PLL_RX_CFG_H(channel),
384 val >> 16);
385 return err;
386}
387
388/* Mode is always 10G fiber. */
389static int serdes_init_niu_10g_fiber(struct niu *np)
390{
391 struct niu_link_config *lp = &np->link_config;
392 u32 tx_cfg, rx_cfg;
393 unsigned long i;
394
395 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
396 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
397 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
398 PLL_RX_CFG_EQ_LP_ADAPTIVE);
399
400 if (lp->loopback_mode == LOOPBACK_PHY) {
401 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
402
403 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
404 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
405
406 tx_cfg |= PLL_TX_CFG_ENTEST;
407 rx_cfg |= PLL_RX_CFG_ENTEST;
408 }
409
410 /* Initialize all 4 lanes of the SERDES. */
411 for (i = 0; i < 4; i++) {
412 int err = esr2_set_tx_cfg(np, i, tx_cfg);
413 if (err)
414 return err;
415 }
416
417 for (i = 0; i < 4; i++) {
418 int err = esr2_set_rx_cfg(np, i, rx_cfg);
419 if (err)
420 return err;
421 }
422
423 return 0;
424}
425
426static int serdes_init_niu_1g_serdes(struct niu *np)
427{
428 struct niu_link_config *lp = &np->link_config;
429 u16 pll_cfg, pll_sts;
430 int max_retry = 100;
431 u64 uninitialized_var(sig), mask, val;
432 u32 tx_cfg, rx_cfg;
433 unsigned long i;
434 int err;
435
436 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
437 PLL_TX_CFG_RATE_HALF);
438 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
439 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
440 PLL_RX_CFG_RATE_HALF);
441
442 if (np->port == 0)
443 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
444
445 if (lp->loopback_mode == LOOPBACK_PHY) {
446 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
447
448 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
449 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
450
451 tx_cfg |= PLL_TX_CFG_ENTEST;
452 rx_cfg |= PLL_RX_CFG_ENTEST;
453 }
454
455 /* Initialize PLL for 1G */
456 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
457
458 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
459 ESR2_TI_PLL_CFG_L, pll_cfg);
460 if (err) {
461 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
462 np->port, __func__);
463 return err;
464 }
465
466 pll_sts = PLL_CFG_ENPLL;
467
468 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
469 ESR2_TI_PLL_STS_L, pll_sts);
470 if (err) {
471 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
472 np->port, __func__);
473 return err;
474 }
475
476 udelay(200);
477
478 /* Initialize all 4 lanes of the SERDES. */
479 for (i = 0; i < 4; i++) {
480 err = esr2_set_tx_cfg(np, i, tx_cfg);
481 if (err)
482 return err;
483 }
484
485 for (i = 0; i < 4; i++) {
486 err = esr2_set_rx_cfg(np, i, rx_cfg);
487 if (err)
488 return err;
489 }
490
491 switch (np->port) {
492 case 0:
493 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
494 mask = val;
495 break;
496
497 case 1:
498 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
499 mask = val;
500 break;
501
502 default:
503 return -EINVAL;
504 }
505
506 while (max_retry--) {
507 sig = nr64(ESR_INT_SIGNALS);
508 if ((sig & mask) == val)
509 break;
510
511 mdelay(500);
512 }
513
514 if ((sig & mask) != val) {
515 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
516 np->port, (int)(sig & mask), (int)val);
517 return -ENODEV;
518 }
519
520 return 0;
521}
522
523static int serdes_init_niu_10g_serdes(struct niu *np)
524{
525 struct niu_link_config *lp = &np->link_config;
526 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
527 int max_retry = 100;
528 u64 uninitialized_var(sig), mask, val;
529 unsigned long i;
530 int err;
531
532 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
533 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
534 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
535 PLL_RX_CFG_EQ_LP_ADAPTIVE);
536
537 if (lp->loopback_mode == LOOPBACK_PHY) {
538 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
539
540 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
541 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
542
543 tx_cfg |= PLL_TX_CFG_ENTEST;
544 rx_cfg |= PLL_RX_CFG_ENTEST;
545 }
546
547 /* Initialize PLL for 10G */
548 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
549
550 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
551 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
552 if (err) {
553 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
554 np->port, __func__);
555 return err;
556 }
557
558 pll_sts = PLL_CFG_ENPLL;
559
560 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
561 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
562 if (err) {
563 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
564 np->port, __func__);
565 return err;
566 }
567
568 udelay(200);
569
570 /* Initialize all 4 lanes of the SERDES. */
571 for (i = 0; i < 4; i++) {
572 err = esr2_set_tx_cfg(np, i, tx_cfg);
573 if (err)
574 return err;
575 }
576
577 for (i = 0; i < 4; i++) {
578 err = esr2_set_rx_cfg(np, i, rx_cfg);
579 if (err)
580 return err;
581 }
582
583 /* check if serdes is ready */
584
585 switch (np->port) {
586 case 0:
587 mask = ESR_INT_SIGNALS_P0_BITS;
588 val = (ESR_INT_SRDY0_P0 |
589 ESR_INT_DET0_P0 |
590 ESR_INT_XSRDY_P0 |
591 ESR_INT_XDP_P0_CH3 |
592 ESR_INT_XDP_P0_CH2 |
593 ESR_INT_XDP_P0_CH1 |
594 ESR_INT_XDP_P0_CH0);
595 break;
596
597 case 1:
598 mask = ESR_INT_SIGNALS_P1_BITS;
599 val = (ESR_INT_SRDY0_P1 |
600 ESR_INT_DET0_P1 |
601 ESR_INT_XSRDY_P1 |
602 ESR_INT_XDP_P1_CH3 |
603 ESR_INT_XDP_P1_CH2 |
604 ESR_INT_XDP_P1_CH1 |
605 ESR_INT_XDP_P1_CH0);
606 break;
607
608 default:
609 return -EINVAL;
610 }
611
612 while (max_retry--) {
613 sig = nr64(ESR_INT_SIGNALS);
614 if ((sig & mask) == val)
615 break;
616
617 mdelay(500);
618 }
619
620 if ((sig & mask) != val) {
621 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
622 np->port, (int)(sig & mask), (int)val);
623
624 /* 10G failed, try initializing at 1G */
625 err = serdes_init_niu_1g_serdes(np);
626 if (!err) {
627 np->flags &= ~NIU_FLAGS_10G;
628 np->mac_xcvr = MAC_XCVR_PCS;
629 } else {
630 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
631 np->port);
632 return -ENODEV;
633 }
634 }
635 return 0;
636}
637
638static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
639{
640 int err;
641
642 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
643 if (err >= 0) {
644 *val = (err & 0xffff);
645 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
646 ESR_RXTX_CTRL_H(chan));
647 if (err >= 0)
648 *val |= ((err & 0xffff) << 16);
649 err = 0;
650 }
651 return err;
652}
653
654static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
655{
656 int err;
657
658 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
659 ESR_GLUE_CTRL0_L(chan));
660 if (err >= 0) {
661 *val = (err & 0xffff);
662 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
663 ESR_GLUE_CTRL0_H(chan));
664 if (err >= 0) {
665 *val |= ((err & 0xffff) << 16);
666 err = 0;
667 }
668 }
669 return err;
670}
671
672static int esr_read_reset(struct niu *np, u32 *val)
673{
674 int err;
675
676 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
677 ESR_RXTX_RESET_CTRL_L);
678 if (err >= 0) {
679 *val = (err & 0xffff);
680 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
681 ESR_RXTX_RESET_CTRL_H);
682 if (err >= 0) {
683 *val |= ((err & 0xffff) << 16);
684 err = 0;
685 }
686 }
687 return err;
688}
689
690static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
691{
692 int err;
693
694 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
695 ESR_RXTX_CTRL_L(chan), val & 0xffff);
696 if (!err)
697 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
698 ESR_RXTX_CTRL_H(chan), (val >> 16));
699 return err;
700}
701
702static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
703{
704 int err;
705
706 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
707 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
708 if (!err)
709 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
710 ESR_GLUE_CTRL0_H(chan), (val >> 16));
711 return err;
712}
713
714static int esr_reset(struct niu *np)
715{
716 u32 uninitialized_var(reset);
717 int err;
718
719 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
720 ESR_RXTX_RESET_CTRL_L, 0x0000);
721 if (err)
722 return err;
723 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
724 ESR_RXTX_RESET_CTRL_H, 0xffff);
725 if (err)
726 return err;
727 udelay(200);
728
729 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
730 ESR_RXTX_RESET_CTRL_L, 0xffff);
731 if (err)
732 return err;
733 udelay(200);
734
735 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
736 ESR_RXTX_RESET_CTRL_H, 0x0000);
737 if (err)
738 return err;
739 udelay(200);
740
741 err = esr_read_reset(np, &reset);
742 if (err)
743 return err;
744 if (reset != 0) {
745 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
746 np->port, reset);
747 return -ENODEV;
748 }
749
750 return 0;
751}
752
753static int serdes_init_10g(struct niu *np)
754{
755 struct niu_link_config *lp = &np->link_config;
756 unsigned long ctrl_reg, test_cfg_reg, i;
757 u64 ctrl_val, test_cfg_val, sig, mask, val;
758 int err;
759
760 switch (np->port) {
761 case 0:
762 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
763 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
764 break;
765 case 1:
766 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
767 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
768 break;
769
770 default:
771 return -EINVAL;
772 }
773 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
774 ENET_SERDES_CTRL_SDET_1 |
775 ENET_SERDES_CTRL_SDET_2 |
776 ENET_SERDES_CTRL_SDET_3 |
777 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
778 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
779 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
780 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
781 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
782 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
783 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
784 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
785 test_cfg_val = 0;
786
787 if (lp->loopback_mode == LOOPBACK_PHY) {
788 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
789 ENET_SERDES_TEST_MD_0_SHIFT) |
790 (ENET_TEST_MD_PAD_LOOPBACK <<
791 ENET_SERDES_TEST_MD_1_SHIFT) |
792 (ENET_TEST_MD_PAD_LOOPBACK <<
793 ENET_SERDES_TEST_MD_2_SHIFT) |
794 (ENET_TEST_MD_PAD_LOOPBACK <<
795 ENET_SERDES_TEST_MD_3_SHIFT));
796 }
797
798 nw64(ctrl_reg, ctrl_val);
799 nw64(test_cfg_reg, test_cfg_val);
800
801 /* Initialize all 4 lanes of the SERDES. */
802 for (i = 0; i < 4; i++) {
803 u32 rxtx_ctrl, glue0;
804
805 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
806 if (err)
807 return err;
808 err = esr_read_glue0(np, i, &glue0);
809 if (err)
810 return err;
811
812 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
813 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
814 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
815
816 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
817 ESR_GLUE_CTRL0_THCNT |
818 ESR_GLUE_CTRL0_BLTIME);
819 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
820 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
821 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
822 (BLTIME_300_CYCLES <<
823 ESR_GLUE_CTRL0_BLTIME_SHIFT));
824
825 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
826 if (err)
827 return err;
828 err = esr_write_glue0(np, i, glue0);
829 if (err)
830 return err;
831 }
832
833 err = esr_reset(np);
834 if (err)
835 return err;
836
837 sig = nr64(ESR_INT_SIGNALS);
838 switch (np->port) {
839 case 0:
840 mask = ESR_INT_SIGNALS_P0_BITS;
841 val = (ESR_INT_SRDY0_P0 |
842 ESR_INT_DET0_P0 |
843 ESR_INT_XSRDY_P0 |
844 ESR_INT_XDP_P0_CH3 |
845 ESR_INT_XDP_P0_CH2 |
846 ESR_INT_XDP_P0_CH1 |
847 ESR_INT_XDP_P0_CH0);
848 break;
849
850 case 1:
851 mask = ESR_INT_SIGNALS_P1_BITS;
852 val = (ESR_INT_SRDY0_P1 |
853 ESR_INT_DET0_P1 |
854 ESR_INT_XSRDY_P1 |
855 ESR_INT_XDP_P1_CH3 |
856 ESR_INT_XDP_P1_CH2 |
857 ESR_INT_XDP_P1_CH1 |
858 ESR_INT_XDP_P1_CH0);
859 break;
860
861 default:
862 return -EINVAL;
863 }
864
865 if ((sig & mask) != val) {
866 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
867 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
868 return 0;
869 }
870 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
871 np->port, (int)(sig & mask), (int)val);
872 return -ENODEV;
873 }
874 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
875 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
876 return 0;
877}
878
879static int serdes_init_1g(struct niu *np)
880{
881 u64 val;
882
883 val = nr64(ENET_SERDES_1_PLL_CFG);
884 val &= ~ENET_SERDES_PLL_FBDIV2;
885 switch (np->port) {
886 case 0:
887 val |= ENET_SERDES_PLL_HRATE0;
888 break;
889 case 1:
890 val |= ENET_SERDES_PLL_HRATE1;
891 break;
892 case 2:
893 val |= ENET_SERDES_PLL_HRATE2;
894 break;
895 case 3:
896 val |= ENET_SERDES_PLL_HRATE3;
897 break;
898 default:
899 return -EINVAL;
900 }
901 nw64(ENET_SERDES_1_PLL_CFG, val);
902
903 return 0;
904}
905
906static int serdes_init_1g_serdes(struct niu *np)
907{
908 struct niu_link_config *lp = &np->link_config;
909 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
910 u64 ctrl_val, test_cfg_val, sig, mask, val;
911 int err;
912 u64 reset_val, val_rd;
913
914 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
915 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
916 ENET_SERDES_PLL_FBDIV0;
917 switch (np->port) {
918 case 0:
919 reset_val = ENET_SERDES_RESET_0;
920 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
921 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
922 pll_cfg = ENET_SERDES_0_PLL_CFG;
923 break;
924 case 1:
925 reset_val = ENET_SERDES_RESET_1;
926 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
927 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
928 pll_cfg = ENET_SERDES_1_PLL_CFG;
929 break;
930
931 default:
932 return -EINVAL;
933 }
934 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
935 ENET_SERDES_CTRL_SDET_1 |
936 ENET_SERDES_CTRL_SDET_2 |
937 ENET_SERDES_CTRL_SDET_3 |
938 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
939 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
940 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
941 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
942 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
943 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
944 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
945 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
946 test_cfg_val = 0;
947
948 if (lp->loopback_mode == LOOPBACK_PHY) {
949 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
950 ENET_SERDES_TEST_MD_0_SHIFT) |
951 (ENET_TEST_MD_PAD_LOOPBACK <<
952 ENET_SERDES_TEST_MD_1_SHIFT) |
953 (ENET_TEST_MD_PAD_LOOPBACK <<
954 ENET_SERDES_TEST_MD_2_SHIFT) |
955 (ENET_TEST_MD_PAD_LOOPBACK <<
956 ENET_SERDES_TEST_MD_3_SHIFT));
957 }
958
959 nw64(ENET_SERDES_RESET, reset_val);
960 mdelay(20);
961 val_rd = nr64(ENET_SERDES_RESET);
962 val_rd &= ~reset_val;
963 nw64(pll_cfg, val);
964 nw64(ctrl_reg, ctrl_val);
965 nw64(test_cfg_reg, test_cfg_val);
966 nw64(ENET_SERDES_RESET, val_rd);
967 mdelay(2000);
968
969 /* Initialize all 4 lanes of the SERDES. */
970 for (i = 0; i < 4; i++) {
971 u32 rxtx_ctrl, glue0;
972
973 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
974 if (err)
975 return err;
976 err = esr_read_glue0(np, i, &glue0);
977 if (err)
978 return err;
979
980 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
981 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
982 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
983
984 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
985 ESR_GLUE_CTRL0_THCNT |
986 ESR_GLUE_CTRL0_BLTIME);
987 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
988 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
989 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
990 (BLTIME_300_CYCLES <<
991 ESR_GLUE_CTRL0_BLTIME_SHIFT));
992
993 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
994 if (err)
995 return err;
996 err = esr_write_glue0(np, i, glue0);
997 if (err)
998 return err;
999 }
1000
1001
1002 sig = nr64(ESR_INT_SIGNALS);
1003 switch (np->port) {
1004 case 0:
1005 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1006 mask = val;
1007 break;
1008
1009 case 1:
1010 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1011 mask = val;
1012 break;
1013
1014 default:
1015 return -EINVAL;
1016 }
1017
1018 if ((sig & mask) != val) {
1019 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1020 np->port, (int)(sig & mask), (int)val);
1021 return -ENODEV;
1022 }
1023
1024 return 0;
1025}
1026
1027static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1028{
1029 struct niu_link_config *lp = &np->link_config;
1030 int link_up;
1031 u64 val;
1032 u16 current_speed;
1033 unsigned long flags;
1034 u8 current_duplex;
1035
1036 link_up = 0;
1037 current_speed = SPEED_INVALID;
1038 current_duplex = DUPLEX_INVALID;
1039
1040 spin_lock_irqsave(&np->lock, flags);
1041
1042 val = nr64_pcs(PCS_MII_STAT);
1043
1044 if (val & PCS_MII_STAT_LINK_STATUS) {
1045 link_up = 1;
1046 current_speed = SPEED_1000;
1047 current_duplex = DUPLEX_FULL;
1048 }
1049
1050 lp->active_speed = current_speed;
1051 lp->active_duplex = current_duplex;
1052 spin_unlock_irqrestore(&np->lock, flags);
1053
1054 *link_up_p = link_up;
1055 return 0;
1056}
1057
1058static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1059{
1060 unsigned long flags;
1061 struct niu_link_config *lp = &np->link_config;
1062 int link_up = 0;
1063 int link_ok = 1;
1064 u64 val, val2;
1065 u16 current_speed;
1066 u8 current_duplex;
1067
1068 if (!(np->flags & NIU_FLAGS_10G))
1069 return link_status_1g_serdes(np, link_up_p);
1070
1071 current_speed = SPEED_INVALID;
1072 current_duplex = DUPLEX_INVALID;
1073 spin_lock_irqsave(&np->lock, flags);
1074
1075 val = nr64_xpcs(XPCS_STATUS(0));
1076 val2 = nr64_mac(XMAC_INTER2);
1077 if (val2 & 0x01000000)
1078 link_ok = 0;
1079
1080 if ((val & 0x1000ULL) && link_ok) {
1081 link_up = 1;
1082 current_speed = SPEED_10000;
1083 current_duplex = DUPLEX_FULL;
1084 }
1085 lp->active_speed = current_speed;
1086 lp->active_duplex = current_duplex;
1087 spin_unlock_irqrestore(&np->lock, flags);
1088 *link_up_p = link_up;
1089 return 0;
1090}
1091
1092static int link_status_mii(struct niu *np, int *link_up_p)
1093{
1094 struct niu_link_config *lp = &np->link_config;
1095 int err;
1096 int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1097 int supported, advertising, active_speed, active_duplex;
1098
1099 err = mii_read(np, np->phy_addr, MII_BMCR);
1100 if (unlikely(err < 0))
1101 return err;
1102 bmcr = err;
1103
1104 err = mii_read(np, np->phy_addr, MII_BMSR);
1105 if (unlikely(err < 0))
1106 return err;
1107 bmsr = err;
1108
1109 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1110 if (unlikely(err < 0))
1111 return err;
1112 advert = err;
1113
1114 err = mii_read(np, np->phy_addr, MII_LPA);
1115 if (unlikely(err < 0))
1116 return err;
1117 lpa = err;
1118
1119 if (likely(bmsr & BMSR_ESTATEN)) {
1120 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1121 if (unlikely(err < 0))
1122 return err;
1123 estatus = err;
1124
1125 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1126 if (unlikely(err < 0))
1127 return err;
1128 ctrl1000 = err;
1129
1130 err = mii_read(np, np->phy_addr, MII_STAT1000);
1131 if (unlikely(err < 0))
1132 return err;
1133 stat1000 = err;
1134 } else
1135 estatus = ctrl1000 = stat1000 = 0;
1136
1137 supported = 0;
1138 if (bmsr & BMSR_ANEGCAPABLE)
1139 supported |= SUPPORTED_Autoneg;
1140 if (bmsr & BMSR_10HALF)
1141 supported |= SUPPORTED_10baseT_Half;
1142 if (bmsr & BMSR_10FULL)
1143 supported |= SUPPORTED_10baseT_Full;
1144 if (bmsr & BMSR_100HALF)
1145 supported |= SUPPORTED_100baseT_Half;
1146 if (bmsr & BMSR_100FULL)
1147 supported |= SUPPORTED_100baseT_Full;
1148 if (estatus & ESTATUS_1000_THALF)
1149 supported |= SUPPORTED_1000baseT_Half;
1150 if (estatus & ESTATUS_1000_TFULL)
1151 supported |= SUPPORTED_1000baseT_Full;
1152 lp->supported = supported;
1153
1154 advertising = mii_adv_to_ethtool_adv_t(advert);
1155 advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1156
1157 if (bmcr & BMCR_ANENABLE) {
1158 int neg, neg1000;
1159
1160 lp->active_autoneg = 1;
1161 advertising |= ADVERTISED_Autoneg;
1162
1163 neg = advert & lpa;
1164 neg1000 = (ctrl1000 << 2) & stat1000;
1165
1166 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1167 active_speed = SPEED_1000;
1168 else if (neg & LPA_100)
1169 active_speed = SPEED_100;
1170 else if (neg & (LPA_10HALF | LPA_10FULL))
1171 active_speed = SPEED_10;
1172 else
1173 active_speed = SPEED_INVALID;
1174
1175 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1176 active_duplex = DUPLEX_FULL;
1177 else if (active_speed != SPEED_INVALID)
1178 active_duplex = DUPLEX_HALF;
1179 else
1180 active_duplex = DUPLEX_INVALID;
1181 } else {
1182 lp->active_autoneg = 0;
1183
1184 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1185 active_speed = SPEED_1000;
1186 else if (bmcr & BMCR_SPEED100)
1187 active_speed = SPEED_100;
1188 else
1189 active_speed = SPEED_10;
1190
1191 if (bmcr & BMCR_FULLDPLX)
1192 active_duplex = DUPLEX_FULL;
1193 else
1194 active_duplex = DUPLEX_HALF;
1195 }
1196
1197 lp->active_advertising = advertising;
1198 lp->active_speed = active_speed;
1199 lp->active_duplex = active_duplex;
1200 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1201
1202 return 0;
1203}
1204
1205static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1206{
1207 struct niu_link_config *lp = &np->link_config;
1208 u16 current_speed, bmsr;
1209 unsigned long flags;
1210 u8 current_duplex;
1211 int err, link_up;
1212
1213 link_up = 0;
1214 current_speed = SPEED_INVALID;
1215 current_duplex = DUPLEX_INVALID;
1216
1217 spin_lock_irqsave(&np->lock, flags);
1218
1219 err = -EINVAL;
1220
1221 err = mii_read(np, np->phy_addr, MII_BMSR);
1222 if (err < 0)
1223 goto out;
1224
1225 bmsr = err;
1226 if (bmsr & BMSR_LSTATUS) {
1227 u16 adv, lpa;
1228
1229 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1230 if (err < 0)
1231 goto out;
1232 adv = err;
1233
1234 err = mii_read(np, np->phy_addr, MII_LPA);
1235 if (err < 0)
1236 goto out;
1237 lpa = err;
1238
1239 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1240 if (err < 0)
1241 goto out;
1242 link_up = 1;
1243 current_speed = SPEED_1000;
1244 current_duplex = DUPLEX_FULL;
1245
1246 }
1247 lp->active_speed = current_speed;
1248 lp->active_duplex = current_duplex;
1249 err = 0;
1250
1251out:
1252 spin_unlock_irqrestore(&np->lock, flags);
1253
1254 *link_up_p = link_up;
1255 return err;
1256}
1257
1258static int link_status_1g(struct niu *np, int *link_up_p)
1259{
1260 struct niu_link_config *lp = &np->link_config;
1261 unsigned long flags;
1262 int err;
1263
1264 spin_lock_irqsave(&np->lock, flags);
1265
1266 err = link_status_mii(np, link_up_p);
1267 lp->supported |= SUPPORTED_TP;
1268 lp->active_advertising |= ADVERTISED_TP;
1269
1270 spin_unlock_irqrestore(&np->lock, flags);
1271 return err;
1272}
1273
1274static int bcm8704_reset(struct niu *np)
1275{
1276 int err, limit;
1277
1278 err = mdio_read(np, np->phy_addr,
1279 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1280 if (err < 0 || err == 0xffff)
1281 return err;
1282 err |= BMCR_RESET;
1283 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1284 MII_BMCR, err);
1285 if (err)
1286 return err;
1287
1288 limit = 1000;
1289 while (--limit >= 0) {
1290 err = mdio_read(np, np->phy_addr,
1291 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1292 if (err < 0)
1293 return err;
1294 if (!(err & BMCR_RESET))
1295 break;
1296 }
1297 if (limit < 0) {
1298 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1299 np->port, (err & 0xffff));
1300 return -ENODEV;
1301 }
1302 return 0;
1303}
1304
1305/* When written, certain PHY registers need to be read back twice
1306 * in order for the bits to settle properly.
1307 */
1308static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1309{
1310 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1311 if (err < 0)
1312 return err;
1313 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1314 if (err < 0)
1315 return err;
1316 return 0;
1317}
1318
1319static int bcm8706_init_user_dev3(struct niu *np)
1320{
1321 int err;
1322
1323
1324 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1325 BCM8704_USER_OPT_DIGITAL_CTRL);
1326 if (err < 0)
1327 return err;
1328 err &= ~USER_ODIG_CTRL_GPIOS;
1329 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1330 err |= USER_ODIG_CTRL_RESV2;
1331 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1332 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1333 if (err)
1334 return err;
1335
1336 mdelay(1000);
1337
1338 return 0;
1339}
1340
1341static int bcm8704_init_user_dev3(struct niu *np)
1342{
1343 int err;
1344
1345 err = mdio_write(np, np->phy_addr,
1346 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1347 (USER_CONTROL_OPTXRST_LVL |
1348 USER_CONTROL_OPBIASFLT_LVL |
1349 USER_CONTROL_OBTMPFLT_LVL |
1350 USER_CONTROL_OPPRFLT_LVL |
1351 USER_CONTROL_OPTXFLT_LVL |
1352 USER_CONTROL_OPRXLOS_LVL |
1353 USER_CONTROL_OPRXFLT_LVL |
1354 USER_CONTROL_OPTXON_LVL |
1355 (0x3f << USER_CONTROL_RES1_SHIFT)));
1356 if (err)
1357 return err;
1358
1359 err = mdio_write(np, np->phy_addr,
1360 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1361 (USER_PMD_TX_CTL_XFP_CLKEN |
1362 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1363 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1364 USER_PMD_TX_CTL_TSCK_LPWREN));
1365 if (err)
1366 return err;
1367
1368 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1369 if (err)
1370 return err;
1371 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1372 if (err)
1373 return err;
1374
1375 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1376 BCM8704_USER_OPT_DIGITAL_CTRL);
1377 if (err < 0)
1378 return err;
1379 err &= ~USER_ODIG_CTRL_GPIOS;
1380 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1381 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1382 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1383 if (err)
1384 return err;
1385
1386 mdelay(1000);
1387
1388 return 0;
1389}
1390
1391static int mrvl88x2011_act_led(struct niu *np, int val)
1392{
1393 int err;
1394
1395 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1396 MRVL88X2011_LED_8_TO_11_CTL);
1397 if (err < 0)
1398 return err;
1399
1400 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1401 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1402
1403 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1404 MRVL88X2011_LED_8_TO_11_CTL, err);
1405}
1406
1407static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1408{
1409 int err;
1410
1411 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1412 MRVL88X2011_LED_BLINK_CTL);
1413 if (err >= 0) {
1414 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1415 err |= (rate << 4);
1416
1417 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1418 MRVL88X2011_LED_BLINK_CTL, err);
1419 }
1420
1421 return err;
1422}
1423
1424static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1425{
1426 int err;
1427
1428 /* Set LED functions */
1429 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1430 if (err)
1431 return err;
1432
1433 /* led activity */
1434 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1435 if (err)
1436 return err;
1437
1438 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1439 MRVL88X2011_GENERAL_CTL);
1440 if (err < 0)
1441 return err;
1442
1443 err |= MRVL88X2011_ENA_XFPREFCLK;
1444
1445 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1446 MRVL88X2011_GENERAL_CTL, err);
1447 if (err < 0)
1448 return err;
1449
1450 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1451 MRVL88X2011_PMA_PMD_CTL_1);
1452 if (err < 0)
1453 return err;
1454
1455 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1456 err |= MRVL88X2011_LOOPBACK;
1457 else
1458 err &= ~MRVL88X2011_LOOPBACK;
1459
1460 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1461 MRVL88X2011_PMA_PMD_CTL_1, err);
1462 if (err < 0)
1463 return err;
1464
1465 /* Enable PMD */
1466 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1467 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1468}
1469
1470
1471static int xcvr_diag_bcm870x(struct niu *np)
1472{
1473 u16 analog_stat0, tx_alarm_status;
1474 int err = 0;
1475
1476#if 1
1477 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1478 MII_STAT1000);
1479 if (err < 0)
1480 return err;
1481 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1482
1483 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1484 if (err < 0)
1485 return err;
1486 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1487
1488 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1489 MII_NWAYTEST);
1490 if (err < 0)
1491 return err;
1492 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1493#endif
1494
1495 /* XXX dig this out it might not be so useful XXX */
1496 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1497 BCM8704_USER_ANALOG_STATUS0);
1498 if (err < 0)
1499 return err;
1500 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1501 BCM8704_USER_ANALOG_STATUS0);
1502 if (err < 0)
1503 return err;
1504 analog_stat0 = err;
1505
1506 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1507 BCM8704_USER_TX_ALARM_STATUS);
1508 if (err < 0)
1509 return err;
1510 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1511 BCM8704_USER_TX_ALARM_STATUS);
1512 if (err < 0)
1513 return err;
1514 tx_alarm_status = err;
1515
1516 if (analog_stat0 != 0x03fc) {
1517 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1518 pr_info("Port %u cable not connected or bad cable\n",
1519 np->port);
1520 } else if (analog_stat0 == 0x639c) {
1521 pr_info("Port %u optical module is bad or missing\n",
1522 np->port);
1523 }
1524 }
1525
1526 return 0;
1527}
1528
1529static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1530{
1531 struct niu_link_config *lp = &np->link_config;
1532 int err;
1533
1534 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1535 MII_BMCR);
1536 if (err < 0)
1537 return err;
1538
1539 err &= ~BMCR_LOOPBACK;
1540
1541 if (lp->loopback_mode == LOOPBACK_MAC)
1542 err |= BMCR_LOOPBACK;
1543
1544 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1545 MII_BMCR, err);
1546 if (err)
1547 return err;
1548
1549 return 0;
1550}
1551
1552static int xcvr_init_10g_bcm8706(struct niu *np)
1553{
1554 int err = 0;
1555 u64 val;
1556
1557 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1558 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1559 return err;
1560
1561 val = nr64_mac(XMAC_CONFIG);
1562 val &= ~XMAC_CONFIG_LED_POLARITY;
1563 val |= XMAC_CONFIG_FORCE_LED_ON;
1564 nw64_mac(XMAC_CONFIG, val);
1565
1566 val = nr64(MIF_CONFIG);
1567 val |= MIF_CONFIG_INDIRECT_MODE;
1568 nw64(MIF_CONFIG, val);
1569
1570 err = bcm8704_reset(np);
1571 if (err)
1572 return err;
1573
1574 err = xcvr_10g_set_lb_bcm870x(np);
1575 if (err)
1576 return err;
1577
1578 err = bcm8706_init_user_dev3(np);
1579 if (err)
1580 return err;
1581
1582 err = xcvr_diag_bcm870x(np);
1583 if (err)
1584 return err;
1585
1586 return 0;
1587}
1588
1589static int xcvr_init_10g_bcm8704(struct niu *np)
1590{
1591 int err;
1592
1593 err = bcm8704_reset(np);
1594 if (err)
1595 return err;
1596
1597 err = bcm8704_init_user_dev3(np);
1598 if (err)
1599 return err;
1600
1601 err = xcvr_10g_set_lb_bcm870x(np);
1602 if (err)
1603 return err;
1604
1605 err = xcvr_diag_bcm870x(np);
1606 if (err)
1607 return err;
1608
1609 return 0;
1610}
1611
1612static int xcvr_init_10g(struct niu *np)
1613{
1614 int phy_id, err;
1615 u64 val;
1616
1617 val = nr64_mac(XMAC_CONFIG);
1618 val &= ~XMAC_CONFIG_LED_POLARITY;
1619 val |= XMAC_CONFIG_FORCE_LED_ON;
1620 nw64_mac(XMAC_CONFIG, val);
1621
1622 /* XXX shared resource, lock parent XXX */
1623 val = nr64(MIF_CONFIG);
1624 val |= MIF_CONFIG_INDIRECT_MODE;
1625 nw64(MIF_CONFIG, val);
1626
1627 phy_id = phy_decode(np->parent->port_phy, np->port);
1628 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1629
1630 /* handle different phy types */
1631 switch (phy_id & NIU_PHY_ID_MASK) {
1632 case NIU_PHY_ID_MRVL88X2011:
1633 err = xcvr_init_10g_mrvl88x2011(np);
1634 break;
1635
1636 default: /* bcom 8704 */
1637 err = xcvr_init_10g_bcm8704(np);
1638 break;
1639 }
1640
1641 return err;
1642}
1643
1644static int mii_reset(struct niu *np)
1645{
1646 int limit, err;
1647
1648 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1649 if (err)
1650 return err;
1651
1652 limit = 1000;
1653 while (--limit >= 0) {
1654 udelay(500);
1655 err = mii_read(np, np->phy_addr, MII_BMCR);
1656 if (err < 0)
1657 return err;
1658 if (!(err & BMCR_RESET))
1659 break;
1660 }
1661 if (limit < 0) {
1662 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1663 np->port, err);
1664 return -ENODEV;
1665 }
1666
1667 return 0;
1668}
1669
1670static int xcvr_init_1g_rgmii(struct niu *np)
1671{
1672 int err;
1673 u64 val;
1674 u16 bmcr, bmsr, estat;
1675
1676 val = nr64(MIF_CONFIG);
1677 val &= ~MIF_CONFIG_INDIRECT_MODE;
1678 nw64(MIF_CONFIG, val);
1679
1680 err = mii_reset(np);
1681 if (err)
1682 return err;
1683
1684 err = mii_read(np, np->phy_addr, MII_BMSR);
1685 if (err < 0)
1686 return err;
1687 bmsr = err;
1688
1689 estat = 0;
1690 if (bmsr & BMSR_ESTATEN) {
1691 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1692 if (err < 0)
1693 return err;
1694 estat = err;
1695 }
1696
1697 bmcr = 0;
1698 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1699 if (err)
1700 return err;
1701
1702 if (bmsr & BMSR_ESTATEN) {
1703 u16 ctrl1000 = 0;
1704
1705 if (estat & ESTATUS_1000_TFULL)
1706 ctrl1000 |= ADVERTISE_1000FULL;
1707 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1708 if (err)
1709 return err;
1710 }
1711
1712 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1713
1714 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1715 if (err)
1716 return err;
1717
1718 err = mii_read(np, np->phy_addr, MII_BMCR);
1719 if (err < 0)
1720 return err;
1721 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1722
1723 err = mii_read(np, np->phy_addr, MII_BMSR);
1724 if (err < 0)
1725 return err;
1726
1727 return 0;
1728}
1729
1730static int mii_init_common(struct niu *np)
1731{
1732 struct niu_link_config *lp = &np->link_config;
1733 u16 bmcr, bmsr, adv, estat;
1734 int err;
1735
1736 err = mii_reset(np);
1737 if (err)
1738 return err;
1739
1740 err = mii_read(np, np->phy_addr, MII_BMSR);
1741 if (err < 0)
1742 return err;
1743 bmsr = err;
1744
1745 estat = 0;
1746 if (bmsr & BMSR_ESTATEN) {
1747 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1748 if (err < 0)
1749 return err;
1750 estat = err;
1751 }
1752
1753 bmcr = 0;
1754 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1755 if (err)
1756 return err;
1757
1758 if (lp->loopback_mode == LOOPBACK_MAC) {
1759 bmcr |= BMCR_LOOPBACK;
1760 if (lp->active_speed == SPEED_1000)
1761 bmcr |= BMCR_SPEED1000;
1762 if (lp->active_duplex == DUPLEX_FULL)
1763 bmcr |= BMCR_FULLDPLX;
1764 }
1765
1766 if (lp->loopback_mode == LOOPBACK_PHY) {
1767 u16 aux;
1768
1769 aux = (BCM5464R_AUX_CTL_EXT_LB |
1770 BCM5464R_AUX_CTL_WRITE_1);
1771 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1772 if (err)
1773 return err;
1774 }
1775
1776 if (lp->autoneg) {
1777 u16 ctrl1000;
1778
1779 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1780 if ((bmsr & BMSR_10HALF) &&
1781 (lp->advertising & ADVERTISED_10baseT_Half))
1782 adv |= ADVERTISE_10HALF;
1783 if ((bmsr & BMSR_10FULL) &&
1784 (lp->advertising & ADVERTISED_10baseT_Full))
1785 adv |= ADVERTISE_10FULL;
1786 if ((bmsr & BMSR_100HALF) &&
1787 (lp->advertising & ADVERTISED_100baseT_Half))
1788 adv |= ADVERTISE_100HALF;
1789 if ((bmsr & BMSR_100FULL) &&
1790 (lp->advertising & ADVERTISED_100baseT_Full))
1791 adv |= ADVERTISE_100FULL;
1792 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1793 if (err)
1794 return err;
1795
1796 if (likely(bmsr & BMSR_ESTATEN)) {
1797 ctrl1000 = 0;
1798 if ((estat & ESTATUS_1000_THALF) &&
1799 (lp->advertising & ADVERTISED_1000baseT_Half))
1800 ctrl1000 |= ADVERTISE_1000HALF;
1801 if ((estat & ESTATUS_1000_TFULL) &&
1802 (lp->advertising & ADVERTISED_1000baseT_Full))
1803 ctrl1000 |= ADVERTISE_1000FULL;
1804 err = mii_write(np, np->phy_addr,
1805 MII_CTRL1000, ctrl1000);
1806 if (err)
1807 return err;
1808 }
1809
1810 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1811 } else {
1812 /* !lp->autoneg */
1813 int fulldpx;
1814
1815 if (lp->duplex == DUPLEX_FULL) {
1816 bmcr |= BMCR_FULLDPLX;
1817 fulldpx = 1;
1818 } else if (lp->duplex == DUPLEX_HALF)
1819 fulldpx = 0;
1820 else
1821 return -EINVAL;
1822
1823 if (lp->speed == SPEED_1000) {
1824 /* if X-full requested while not supported, or
1825 X-half requested while not supported... */
1826 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1827 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1828 return -EINVAL;
1829 bmcr |= BMCR_SPEED1000;
1830 } else if (lp->speed == SPEED_100) {
1831 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1832 (!fulldpx && !(bmsr & BMSR_100HALF)))
1833 return -EINVAL;
1834 bmcr |= BMCR_SPEED100;
1835 } else if (lp->speed == SPEED_10) {
1836 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1837 (!fulldpx && !(bmsr & BMSR_10HALF)))
1838 return -EINVAL;
1839 } else
1840 return -EINVAL;
1841 }
1842
1843 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1844 if (err)
1845 return err;
1846
1847#if 0
1848 err = mii_read(np, np->phy_addr, MII_BMCR);
1849 if (err < 0)
1850 return err;
1851 bmcr = err;
1852
1853 err = mii_read(np, np->phy_addr, MII_BMSR);
1854 if (err < 0)
1855 return err;
1856 bmsr = err;
1857
1858 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1859 np->port, bmcr, bmsr);
1860#endif
1861
1862 return 0;
1863}
1864
1865static int xcvr_init_1g(struct niu *np)
1866{
1867 u64 val;
1868
1869 /* XXX shared resource, lock parent XXX */
1870 val = nr64(MIF_CONFIG);
1871 val &= ~MIF_CONFIG_INDIRECT_MODE;
1872 nw64(MIF_CONFIG, val);
1873
1874 return mii_init_common(np);
1875}
1876
1877static int niu_xcvr_init(struct niu *np)
1878{
1879 const struct niu_phy_ops *ops = np->phy_ops;
1880 int err;
1881
1882 err = 0;
1883 if (ops->xcvr_init)
1884 err = ops->xcvr_init(np);
1885
1886 return err;
1887}
1888
1889static int niu_serdes_init(struct niu *np)
1890{
1891 const struct niu_phy_ops *ops = np->phy_ops;
1892 int err;
1893
1894 err = 0;
1895 if (ops->serdes_init)
1896 err = ops->serdes_init(np);
1897
1898 return err;
1899}
1900
1901static void niu_init_xif(struct niu *);
1902static void niu_handle_led(struct niu *, int status);
1903
1904static int niu_link_status_common(struct niu *np, int link_up)
1905{
1906 struct niu_link_config *lp = &np->link_config;
1907 struct net_device *dev = np->dev;
1908 unsigned long flags;
1909
1910 if (!netif_carrier_ok(dev) && link_up) {
1911 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1912 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1913 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1914 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1915 "10Mbit/sec",
1916 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1917
1918 spin_lock_irqsave(&np->lock, flags);
1919 niu_init_xif(np);
1920 niu_handle_led(np, 1);
1921 spin_unlock_irqrestore(&np->lock, flags);
1922
1923 netif_carrier_on(dev);
1924 } else if (netif_carrier_ok(dev) && !link_up) {
1925 netif_warn(np, link, dev, "Link is down\n");
1926 spin_lock_irqsave(&np->lock, flags);
1927 niu_handle_led(np, 0);
1928 spin_unlock_irqrestore(&np->lock, flags);
1929 netif_carrier_off(dev);
1930 }
1931
1932 return 0;
1933}
1934
1935static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1936{
1937 int err, link_up, pma_status, pcs_status;
1938
1939 link_up = 0;
1940
1941 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1942 MRVL88X2011_10G_PMD_STATUS_2);
1943 if (err < 0)
1944 goto out;
1945
1946 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1947 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1948 MRVL88X2011_PMA_PMD_STATUS_1);
1949 if (err < 0)
1950 goto out;
1951
1952 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1953
1954 /* Check PMC Register : 3.0001.2 == 1: read twice */
1955 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1956 MRVL88X2011_PMA_PMD_STATUS_1);
1957 if (err < 0)
1958 goto out;
1959
1960 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1961 MRVL88X2011_PMA_PMD_STATUS_1);
1962 if (err < 0)
1963 goto out;
1964
1965 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1966
1967 /* Check XGXS Register : 4.0018.[0-3,12] */
1968 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1969 MRVL88X2011_10G_XGXS_LANE_STAT);
1970 if (err < 0)
1971 goto out;
1972
1973 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1974 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1975 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1976 0x800))
1977 link_up = (pma_status && pcs_status) ? 1 : 0;
1978
1979 np->link_config.active_speed = SPEED_10000;
1980 np->link_config.active_duplex = DUPLEX_FULL;
1981 err = 0;
1982out:
1983 mrvl88x2011_act_led(np, (link_up ?
1984 MRVL88X2011_LED_CTL_PCS_ACT :
1985 MRVL88X2011_LED_CTL_OFF));
1986
1987 *link_up_p = link_up;
1988 return err;
1989}
1990
1991static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1992{
1993 int err, link_up;
1994 link_up = 0;
1995
1996 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1997 BCM8704_PMD_RCV_SIGDET);
1998 if (err < 0 || err == 0xffff)
1999 goto out;
2000 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2001 err = 0;
2002 goto out;
2003 }
2004
2005 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2006 BCM8704_PCS_10G_R_STATUS);
2007 if (err < 0)
2008 goto out;
2009
2010 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2011 err = 0;
2012 goto out;
2013 }
2014
2015 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2016 BCM8704_PHYXS_XGXS_LANE_STAT);
2017 if (err < 0)
2018 goto out;
2019 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2020 PHYXS_XGXS_LANE_STAT_MAGIC |
2021 PHYXS_XGXS_LANE_STAT_PATTEST |
2022 PHYXS_XGXS_LANE_STAT_LANE3 |
2023 PHYXS_XGXS_LANE_STAT_LANE2 |
2024 PHYXS_XGXS_LANE_STAT_LANE1 |
2025 PHYXS_XGXS_LANE_STAT_LANE0)) {
2026 err = 0;
2027 np->link_config.active_speed = SPEED_INVALID;
2028 np->link_config.active_duplex = DUPLEX_INVALID;
2029 goto out;
2030 }
2031
2032 link_up = 1;
2033 np->link_config.active_speed = SPEED_10000;
2034 np->link_config.active_duplex = DUPLEX_FULL;
2035 err = 0;
2036
2037out:
2038 *link_up_p = link_up;
2039 return err;
2040}
2041
2042static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2043{
2044 int err, link_up;
2045
2046 link_up = 0;
2047
2048 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2049 BCM8704_PMD_RCV_SIGDET);
2050 if (err < 0)
2051 goto out;
2052 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2053 err = 0;
2054 goto out;
2055 }
2056
2057 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2058 BCM8704_PCS_10G_R_STATUS);
2059 if (err < 0)
2060 goto out;
2061 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2062 err = 0;
2063 goto out;
2064 }
2065
2066 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2067 BCM8704_PHYXS_XGXS_LANE_STAT);
2068 if (err < 0)
2069 goto out;
2070
2071 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2072 PHYXS_XGXS_LANE_STAT_MAGIC |
2073 PHYXS_XGXS_LANE_STAT_LANE3 |
2074 PHYXS_XGXS_LANE_STAT_LANE2 |
2075 PHYXS_XGXS_LANE_STAT_LANE1 |
2076 PHYXS_XGXS_LANE_STAT_LANE0)) {
2077 err = 0;
2078 goto out;
2079 }
2080
2081 link_up = 1;
2082 np->link_config.active_speed = SPEED_10000;
2083 np->link_config.active_duplex = DUPLEX_FULL;
2084 err = 0;
2085
2086out:
2087 *link_up_p = link_up;
2088 return err;
2089}
2090
2091static int link_status_10g(struct niu *np, int *link_up_p)
2092{
2093 unsigned long flags;
2094 int err = -EINVAL;
2095
2096 spin_lock_irqsave(&np->lock, flags);
2097
2098 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2099 int phy_id;
2100
2101 phy_id = phy_decode(np->parent->port_phy, np->port);
2102 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2103
2104 /* handle different phy types */
2105 switch (phy_id & NIU_PHY_ID_MASK) {
2106 case NIU_PHY_ID_MRVL88X2011:
2107 err = link_status_10g_mrvl(np, link_up_p);
2108 break;
2109
2110 default: /* bcom 8704 */
2111 err = link_status_10g_bcom(np, link_up_p);
2112 break;
2113 }
2114 }
2115
2116 spin_unlock_irqrestore(&np->lock, flags);
2117
2118 return err;
2119}
2120
2121static int niu_10g_phy_present(struct niu *np)
2122{
2123 u64 sig, mask, val;
2124
2125 sig = nr64(ESR_INT_SIGNALS);
2126 switch (np->port) {
2127 case 0:
2128 mask = ESR_INT_SIGNALS_P0_BITS;
2129 val = (ESR_INT_SRDY0_P0 |
2130 ESR_INT_DET0_P0 |
2131 ESR_INT_XSRDY_P0 |
2132 ESR_INT_XDP_P0_CH3 |
2133 ESR_INT_XDP_P0_CH2 |
2134 ESR_INT_XDP_P0_CH1 |
2135 ESR_INT_XDP_P0_CH0);
2136 break;
2137
2138 case 1:
2139 mask = ESR_INT_SIGNALS_P1_BITS;
2140 val = (ESR_INT_SRDY0_P1 |
2141 ESR_INT_DET0_P1 |
2142 ESR_INT_XSRDY_P1 |
2143 ESR_INT_XDP_P1_CH3 |
2144 ESR_INT_XDP_P1_CH2 |
2145 ESR_INT_XDP_P1_CH1 |
2146 ESR_INT_XDP_P1_CH0);
2147 break;
2148
2149 default:
2150 return 0;
2151 }
2152
2153 if ((sig & mask) != val)
2154 return 0;
2155 return 1;
2156}
2157
2158static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2159{
2160 unsigned long flags;
2161 int err = 0;
2162 int phy_present;
2163 int phy_present_prev;
2164
2165 spin_lock_irqsave(&np->lock, flags);
2166
2167 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2168 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2169 1 : 0;
2170 phy_present = niu_10g_phy_present(np);
2171 if (phy_present != phy_present_prev) {
2172 /* state change */
2173 if (phy_present) {
2174 /* A NEM was just plugged in */
2175 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2176 if (np->phy_ops->xcvr_init)
2177 err = np->phy_ops->xcvr_init(np);
2178 if (err) {
2179 err = mdio_read(np, np->phy_addr,
2180 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2181 if (err == 0xffff) {
2182 /* No mdio, back-to-back XAUI */
2183 goto out;
2184 }
2185 /* debounce */
2186 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2187 }
2188 } else {
2189 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2190 *link_up_p = 0;
2191 netif_warn(np, link, np->dev,
2192 "Hotplug PHY Removed\n");
2193 }
2194 }
2195out:
2196 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2197 err = link_status_10g_bcm8706(np, link_up_p);
2198 if (err == 0xffff) {
2199 /* No mdio, back-to-back XAUI: it is C10NEM */
2200 *link_up_p = 1;
2201 np->link_config.active_speed = SPEED_10000;
2202 np->link_config.active_duplex = DUPLEX_FULL;
2203 }
2204 }
2205 }
2206
2207 spin_unlock_irqrestore(&np->lock, flags);
2208
2209 return 0;
2210}
2211
2212static int niu_link_status(struct niu *np, int *link_up_p)
2213{
2214 const struct niu_phy_ops *ops = np->phy_ops;
2215 int err;
2216
2217 err = 0;
2218 if (ops->link_status)
2219 err = ops->link_status(np, link_up_p);
2220
2221 return err;
2222}
2223
2224static void niu_timer(unsigned long __opaque)
2225{
2226 struct niu *np = (struct niu *) __opaque;
2227 unsigned long off;
2228 int err, link_up;
2229
2230 err = niu_link_status(np, &link_up);
2231 if (!err)
2232 niu_link_status_common(np, link_up);
2233
2234 if (netif_carrier_ok(np->dev))
2235 off = 5 * HZ;
2236 else
2237 off = 1 * HZ;
2238 np->timer.expires = jiffies + off;
2239
2240 add_timer(&np->timer);
2241}
2242
2243static const struct niu_phy_ops phy_ops_10g_serdes = {
2244 .serdes_init = serdes_init_10g_serdes,
2245 .link_status = link_status_10g_serdes,
2246};
2247
2248static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2249 .serdes_init = serdes_init_niu_10g_serdes,
2250 .link_status = link_status_10g_serdes,
2251};
2252
2253static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2254 .serdes_init = serdes_init_niu_1g_serdes,
2255 .link_status = link_status_1g_serdes,
2256};
2257
2258static const struct niu_phy_ops phy_ops_1g_rgmii = {
2259 .xcvr_init = xcvr_init_1g_rgmii,
2260 .link_status = link_status_1g_rgmii,
2261};
2262
2263static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2264 .serdes_init = serdes_init_niu_10g_fiber,
2265 .xcvr_init = xcvr_init_10g,
2266 .link_status = link_status_10g,
2267};
2268
2269static const struct niu_phy_ops phy_ops_10g_fiber = {
2270 .serdes_init = serdes_init_10g,
2271 .xcvr_init = xcvr_init_10g,
2272 .link_status = link_status_10g,
2273};
2274
2275static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2276 .serdes_init = serdes_init_10g,
2277 .xcvr_init = xcvr_init_10g_bcm8706,
2278 .link_status = link_status_10g_hotplug,
2279};
2280
2281static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2282 .serdes_init = serdes_init_niu_10g_fiber,
2283 .xcvr_init = xcvr_init_10g_bcm8706,
2284 .link_status = link_status_10g_hotplug,
2285};
2286
2287static const struct niu_phy_ops phy_ops_10g_copper = {
2288 .serdes_init = serdes_init_10g,
2289 .link_status = link_status_10g, /* XXX */
2290};
2291
2292static const struct niu_phy_ops phy_ops_1g_fiber = {
2293 .serdes_init = serdes_init_1g,
2294 .xcvr_init = xcvr_init_1g,
2295 .link_status = link_status_1g,
2296};
2297
2298static const struct niu_phy_ops phy_ops_1g_copper = {
2299 .xcvr_init = xcvr_init_1g,
2300 .link_status = link_status_1g,
2301};
2302
2303struct niu_phy_template {
2304 const struct niu_phy_ops *ops;
2305 u32 phy_addr_base;
2306};
2307
2308static const struct niu_phy_template phy_template_niu_10g_fiber = {
2309 .ops = &phy_ops_10g_fiber_niu,
2310 .phy_addr_base = 16,
2311};
2312
2313static const struct niu_phy_template phy_template_niu_10g_serdes = {
2314 .ops = &phy_ops_10g_serdes_niu,
2315 .phy_addr_base = 0,
2316};
2317
2318static const struct niu_phy_template phy_template_niu_1g_serdes = {
2319 .ops = &phy_ops_1g_serdes_niu,
2320 .phy_addr_base = 0,
2321};
2322
2323static const struct niu_phy_template phy_template_10g_fiber = {
2324 .ops = &phy_ops_10g_fiber,
2325 .phy_addr_base = 8,
2326};
2327
2328static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2329 .ops = &phy_ops_10g_fiber_hotplug,
2330 .phy_addr_base = 8,
2331};
2332
2333static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2334 .ops = &phy_ops_niu_10g_hotplug,
2335 .phy_addr_base = 8,
2336};
2337
2338static const struct niu_phy_template phy_template_10g_copper = {
2339 .ops = &phy_ops_10g_copper,
2340 .phy_addr_base = 10,
2341};
2342
2343static const struct niu_phy_template phy_template_1g_fiber = {
2344 .ops = &phy_ops_1g_fiber,
2345 .phy_addr_base = 0,
2346};
2347
2348static const struct niu_phy_template phy_template_1g_copper = {
2349 .ops = &phy_ops_1g_copper,
2350 .phy_addr_base = 0,
2351};
2352
2353static const struct niu_phy_template phy_template_1g_rgmii = {
2354 .ops = &phy_ops_1g_rgmii,
2355 .phy_addr_base = 0,
2356};
2357
2358static const struct niu_phy_template phy_template_10g_serdes = {
2359 .ops = &phy_ops_10g_serdes,
2360 .phy_addr_base = 0,
2361};
2362
2363static int niu_atca_port_num[4] = {
2364 0, 0, 11, 10
2365};
2366
2367static int serdes_init_10g_serdes(struct niu *np)
2368{
2369 struct niu_link_config *lp = &np->link_config;
2370 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2371 u64 ctrl_val, test_cfg_val, sig, mask, val;
2372
2373 switch (np->port) {
2374 case 0:
2375 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2376 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2377 pll_cfg = ENET_SERDES_0_PLL_CFG;
2378 break;
2379 case 1:
2380 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2381 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2382 pll_cfg = ENET_SERDES_1_PLL_CFG;
2383 break;
2384
2385 default:
2386 return -EINVAL;
2387 }
2388 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2389 ENET_SERDES_CTRL_SDET_1 |
2390 ENET_SERDES_CTRL_SDET_2 |
2391 ENET_SERDES_CTRL_SDET_3 |
2392 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2393 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2394 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2395 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2396 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2397 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2398 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2399 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2400 test_cfg_val = 0;
2401
2402 if (lp->loopback_mode == LOOPBACK_PHY) {
2403 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2404 ENET_SERDES_TEST_MD_0_SHIFT) |
2405 (ENET_TEST_MD_PAD_LOOPBACK <<
2406 ENET_SERDES_TEST_MD_1_SHIFT) |
2407 (ENET_TEST_MD_PAD_LOOPBACK <<
2408 ENET_SERDES_TEST_MD_2_SHIFT) |
2409 (ENET_TEST_MD_PAD_LOOPBACK <<
2410 ENET_SERDES_TEST_MD_3_SHIFT));
2411 }
2412
2413 esr_reset(np);
2414 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2415 nw64(ctrl_reg, ctrl_val);
2416 nw64(test_cfg_reg, test_cfg_val);
2417
2418 /* Initialize all 4 lanes of the SERDES. */
2419 for (i = 0; i < 4; i++) {
2420 u32 rxtx_ctrl, glue0;
2421 int err;
2422
2423 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2424 if (err)
2425 return err;
2426 err = esr_read_glue0(np, i, &glue0);
2427 if (err)
2428 return err;
2429
2430 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2431 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2432 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2433
2434 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2435 ESR_GLUE_CTRL0_THCNT |
2436 ESR_GLUE_CTRL0_BLTIME);
2437 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2438 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2439 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2440 (BLTIME_300_CYCLES <<
2441 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2442
2443 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2444 if (err)
2445 return err;
2446 err = esr_write_glue0(np, i, glue0);
2447 if (err)
2448 return err;
2449 }
2450
2451
2452 sig = nr64(ESR_INT_SIGNALS);
2453 switch (np->port) {
2454 case 0:
2455 mask = ESR_INT_SIGNALS_P0_BITS;
2456 val = (ESR_INT_SRDY0_P0 |
2457 ESR_INT_DET0_P0 |
2458 ESR_INT_XSRDY_P0 |
2459 ESR_INT_XDP_P0_CH3 |
2460 ESR_INT_XDP_P0_CH2 |
2461 ESR_INT_XDP_P0_CH1 |
2462 ESR_INT_XDP_P0_CH0);
2463 break;
2464
2465 case 1:
2466 mask = ESR_INT_SIGNALS_P1_BITS;
2467 val = (ESR_INT_SRDY0_P1 |
2468 ESR_INT_DET0_P1 |
2469 ESR_INT_XSRDY_P1 |
2470 ESR_INT_XDP_P1_CH3 |
2471 ESR_INT_XDP_P1_CH2 |
2472 ESR_INT_XDP_P1_CH1 |
2473 ESR_INT_XDP_P1_CH0);
2474 break;
2475
2476 default:
2477 return -EINVAL;
2478 }
2479
2480 if ((sig & mask) != val) {
2481 int err;
2482 err = serdes_init_1g_serdes(np);
2483 if (!err) {
2484 np->flags &= ~NIU_FLAGS_10G;
2485 np->mac_xcvr = MAC_XCVR_PCS;
2486 } else {
2487 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2488 np->port);
2489 return -ENODEV;
2490 }
2491 }
2492
2493 return 0;
2494}
2495
2496static int niu_determine_phy_disposition(struct niu *np)
2497{
2498 struct niu_parent *parent = np->parent;
2499 u8 plat_type = parent->plat_type;
2500 const struct niu_phy_template *tp;
2501 u32 phy_addr_off = 0;
2502
2503 if (plat_type == PLAT_TYPE_NIU) {
2504 switch (np->flags &
2505 (NIU_FLAGS_10G |
2506 NIU_FLAGS_FIBER |
2507 NIU_FLAGS_XCVR_SERDES)) {
2508 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2509 /* 10G Serdes */
2510 tp = &phy_template_niu_10g_serdes;
2511 break;
2512 case NIU_FLAGS_XCVR_SERDES:
2513 /* 1G Serdes */
2514 tp = &phy_template_niu_1g_serdes;
2515 break;
2516 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2517 /* 10G Fiber */
2518 default:
2519 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2520 tp = &phy_template_niu_10g_hotplug;
2521 if (np->port == 0)
2522 phy_addr_off = 8;
2523 if (np->port == 1)
2524 phy_addr_off = 12;
2525 } else {
2526 tp = &phy_template_niu_10g_fiber;
2527 phy_addr_off += np->port;
2528 }
2529 break;
2530 }
2531 } else {
2532 switch (np->flags &
2533 (NIU_FLAGS_10G |
2534 NIU_FLAGS_FIBER |
2535 NIU_FLAGS_XCVR_SERDES)) {
2536 case 0:
2537 /* 1G copper */
2538 tp = &phy_template_1g_copper;
2539 if (plat_type == PLAT_TYPE_VF_P0)
2540 phy_addr_off = 10;
2541 else if (plat_type == PLAT_TYPE_VF_P1)
2542 phy_addr_off = 26;
2543
2544 phy_addr_off += (np->port ^ 0x3);
2545 break;
2546
2547 case NIU_FLAGS_10G:
2548 /* 10G copper */
2549 tp = &phy_template_10g_copper;
2550 break;
2551
2552 case NIU_FLAGS_FIBER:
2553 /* 1G fiber */
2554 tp = &phy_template_1g_fiber;
2555 break;
2556
2557 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2558 /* 10G fiber */
2559 tp = &phy_template_10g_fiber;
2560 if (plat_type == PLAT_TYPE_VF_P0 ||
2561 plat_type == PLAT_TYPE_VF_P1)
2562 phy_addr_off = 8;
2563 phy_addr_off += np->port;
2564 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2565 tp = &phy_template_10g_fiber_hotplug;
2566 if (np->port == 0)
2567 phy_addr_off = 8;
2568 if (np->port == 1)
2569 phy_addr_off = 12;
2570 }
2571 break;
2572
2573 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2574 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2575 case NIU_FLAGS_XCVR_SERDES:
2576 switch(np->port) {
2577 case 0:
2578 case 1:
2579 tp = &phy_template_10g_serdes;
2580 break;
2581 case 2:
2582 case 3:
2583 tp = &phy_template_1g_rgmii;
2584 break;
2585 default:
2586 return -EINVAL;
2587 break;
2588 }
2589 phy_addr_off = niu_atca_port_num[np->port];
2590 break;
2591
2592 default:
2593 return -EINVAL;
2594 }
2595 }
2596
2597 np->phy_ops = tp->ops;
2598 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2599
2600 return 0;
2601}
2602
2603static int niu_init_link(struct niu *np)
2604{
2605 struct niu_parent *parent = np->parent;
2606 int err, ignore;
2607
2608 if (parent->plat_type == PLAT_TYPE_NIU) {
2609 err = niu_xcvr_init(np);
2610 if (err)
2611 return err;
2612 msleep(200);
2613 }
2614 err = niu_serdes_init(np);
2615 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2616 return err;
2617 msleep(200);
2618 err = niu_xcvr_init(np);
2619 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2620 niu_link_status(np, &ignore);
2621 return 0;
2622}
2623
2624static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2625{
2626 u16 reg0 = addr[4] << 8 | addr[5];
2627 u16 reg1 = addr[2] << 8 | addr[3];
2628 u16 reg2 = addr[0] << 8 | addr[1];
2629
2630 if (np->flags & NIU_FLAGS_XMAC) {
2631 nw64_mac(XMAC_ADDR0, reg0);
2632 nw64_mac(XMAC_ADDR1, reg1);
2633 nw64_mac(XMAC_ADDR2, reg2);
2634 } else {
2635 nw64_mac(BMAC_ADDR0, reg0);
2636 nw64_mac(BMAC_ADDR1, reg1);
2637 nw64_mac(BMAC_ADDR2, reg2);
2638 }
2639}
2640
2641static int niu_num_alt_addr(struct niu *np)
2642{
2643 if (np->flags & NIU_FLAGS_XMAC)
2644 return XMAC_NUM_ALT_ADDR;
2645 else
2646 return BMAC_NUM_ALT_ADDR;
2647}
2648
2649static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2650{
2651 u16 reg0 = addr[4] << 8 | addr[5];
2652 u16 reg1 = addr[2] << 8 | addr[3];
2653 u16 reg2 = addr[0] << 8 | addr[1];
2654
2655 if (index >= niu_num_alt_addr(np))
2656 return -EINVAL;
2657
2658 if (np->flags & NIU_FLAGS_XMAC) {
2659 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2660 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2661 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2662 } else {
2663 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2664 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2665 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2666 }
2667
2668 return 0;
2669}
2670
2671static int niu_enable_alt_mac(struct niu *np, int index, int on)
2672{
2673 unsigned long reg;
2674 u64 val, mask;
2675
2676 if (index >= niu_num_alt_addr(np))
2677 return -EINVAL;
2678
2679 if (np->flags & NIU_FLAGS_XMAC) {
2680 reg = XMAC_ADDR_CMPEN;
2681 mask = 1 << index;
2682 } else {
2683 reg = BMAC_ADDR_CMPEN;
2684 mask = 1 << (index + 1);
2685 }
2686
2687 val = nr64_mac(reg);
2688 if (on)
2689 val |= mask;
2690 else
2691 val &= ~mask;
2692 nw64_mac(reg, val);
2693
2694 return 0;
2695}
2696
2697static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2698 int num, int mac_pref)
2699{
2700 u64 val = nr64_mac(reg);
2701 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2702 val |= num;
2703 if (mac_pref)
2704 val |= HOST_INFO_MPR;
2705 nw64_mac(reg, val);
2706}
2707
2708static int __set_rdc_table_num(struct niu *np,
2709 int xmac_index, int bmac_index,
2710 int rdc_table_num, int mac_pref)
2711{
2712 unsigned long reg;
2713
2714 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2715 return -EINVAL;
2716 if (np->flags & NIU_FLAGS_XMAC)
2717 reg = XMAC_HOST_INFO(xmac_index);
2718 else
2719 reg = BMAC_HOST_INFO(bmac_index);
2720 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2721 return 0;
2722}
2723
2724static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2725 int mac_pref)
2726{
2727 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2728}
2729
2730static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2731 int mac_pref)
2732{
2733 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2734}
2735
2736static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2737 int table_num, int mac_pref)
2738{
2739 if (idx >= niu_num_alt_addr(np))
2740 return -EINVAL;
2741 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2742}
2743
2744static u64 vlan_entry_set_parity(u64 reg_val)
2745{
2746 u64 port01_mask;
2747 u64 port23_mask;
2748
2749 port01_mask = 0x00ff;
2750 port23_mask = 0xff00;
2751
2752 if (hweight64(reg_val & port01_mask) & 1)
2753 reg_val |= ENET_VLAN_TBL_PARITY0;
2754 else
2755 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2756
2757 if (hweight64(reg_val & port23_mask) & 1)
2758 reg_val |= ENET_VLAN_TBL_PARITY1;
2759 else
2760 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2761
2762 return reg_val;
2763}
2764
2765static void vlan_tbl_write(struct niu *np, unsigned long index,
2766 int port, int vpr, int rdc_table)
2767{
2768 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2769
2770 reg_val &= ~((ENET_VLAN_TBL_VPR |
2771 ENET_VLAN_TBL_VLANRDCTBLN) <<
2772 ENET_VLAN_TBL_SHIFT(port));
2773 if (vpr)
2774 reg_val |= (ENET_VLAN_TBL_VPR <<
2775 ENET_VLAN_TBL_SHIFT(port));
2776 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2777
2778 reg_val = vlan_entry_set_parity(reg_val);
2779
2780 nw64(ENET_VLAN_TBL(index), reg_val);
2781}
2782
2783static void vlan_tbl_clear(struct niu *np)
2784{
2785 int i;
2786
2787 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2788 nw64(ENET_VLAN_TBL(i), 0);
2789}
2790
2791static int tcam_wait_bit(struct niu *np, u64 bit)
2792{
2793 int limit = 1000;
2794
2795 while (--limit > 0) {
2796 if (nr64(TCAM_CTL) & bit)
2797 break;
2798 udelay(1);
2799 }
2800 if (limit <= 0)
2801 return -ENODEV;
2802
2803 return 0;
2804}
2805
2806static int tcam_flush(struct niu *np, int index)
2807{
2808 nw64(TCAM_KEY_0, 0x00);
2809 nw64(TCAM_KEY_MASK_0, 0xff);
2810 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2811
2812 return tcam_wait_bit(np, TCAM_CTL_STAT);
2813}
2814
2815#if 0
2816static int tcam_read(struct niu *np, int index,
2817 u64 *key, u64 *mask)
2818{
2819 int err;
2820
2821 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2822 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2823 if (!err) {
2824 key[0] = nr64(TCAM_KEY_0);
2825 key[1] = nr64(TCAM_KEY_1);
2826 key[2] = nr64(TCAM_KEY_2);
2827 key[3] = nr64(TCAM_KEY_3);
2828 mask[0] = nr64(TCAM_KEY_MASK_0);
2829 mask[1] = nr64(TCAM_KEY_MASK_1);
2830 mask[2] = nr64(TCAM_KEY_MASK_2);
2831 mask[3] = nr64(TCAM_KEY_MASK_3);
2832 }
2833 return err;
2834}
2835#endif
2836
2837static int tcam_write(struct niu *np, int index,
2838 u64 *key, u64 *mask)
2839{
2840 nw64(TCAM_KEY_0, key[0]);
2841 nw64(TCAM_KEY_1, key[1]);
2842 nw64(TCAM_KEY_2, key[2]);
2843 nw64(TCAM_KEY_3, key[3]);
2844 nw64(TCAM_KEY_MASK_0, mask[0]);
2845 nw64(TCAM_KEY_MASK_1, mask[1]);
2846 nw64(TCAM_KEY_MASK_2, mask[2]);
2847 nw64(TCAM_KEY_MASK_3, mask[3]);
2848 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2849
2850 return tcam_wait_bit(np, TCAM_CTL_STAT);
2851}
2852
2853#if 0
2854static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2855{
2856 int err;
2857
2858 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2859 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2860 if (!err)
2861 *data = nr64(TCAM_KEY_1);
2862
2863 return err;
2864}
2865#endif
2866
2867static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2868{
2869 nw64(TCAM_KEY_1, assoc_data);
2870 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2871
2872 return tcam_wait_bit(np, TCAM_CTL_STAT);
2873}
2874
2875static void tcam_enable(struct niu *np, int on)
2876{
2877 u64 val = nr64(FFLP_CFG_1);
2878
2879 if (on)
2880 val &= ~FFLP_CFG_1_TCAM_DIS;
2881 else
2882 val |= FFLP_CFG_1_TCAM_DIS;
2883 nw64(FFLP_CFG_1, val);
2884}
2885
2886static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2887{
2888 u64 val = nr64(FFLP_CFG_1);
2889
2890 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2891 FFLP_CFG_1_CAMLAT |
2892 FFLP_CFG_1_CAMRATIO);
2893 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2894 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2895 nw64(FFLP_CFG_1, val);
2896
2897 val = nr64(FFLP_CFG_1);
2898 val |= FFLP_CFG_1_FFLPINITDONE;
2899 nw64(FFLP_CFG_1, val);
2900}
2901
2902static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2903 int on)
2904{
2905 unsigned long reg;
2906 u64 val;
2907
2908 if (class < CLASS_CODE_ETHERTYPE1 ||
2909 class > CLASS_CODE_ETHERTYPE2)
2910 return -EINVAL;
2911
2912 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2913 val = nr64(reg);
2914 if (on)
2915 val |= L2_CLS_VLD;
2916 else
2917 val &= ~L2_CLS_VLD;
2918 nw64(reg, val);
2919
2920 return 0;
2921}
2922
2923#if 0
2924static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2925 u64 ether_type)
2926{
2927 unsigned long reg;
2928 u64 val;
2929
2930 if (class < CLASS_CODE_ETHERTYPE1 ||
2931 class > CLASS_CODE_ETHERTYPE2 ||
2932 (ether_type & ~(u64)0xffff) != 0)
2933 return -EINVAL;
2934
2935 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2936 val = nr64(reg);
2937 val &= ~L2_CLS_ETYPE;
2938 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2939 nw64(reg, val);
2940
2941 return 0;
2942}
2943#endif
2944
2945static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2946 int on)
2947{
2948 unsigned long reg;
2949 u64 val;
2950
2951 if (class < CLASS_CODE_USER_PROG1 ||
2952 class > CLASS_CODE_USER_PROG4)
2953 return -EINVAL;
2954
2955 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2956 val = nr64(reg);
2957 if (on)
2958 val |= L3_CLS_VALID;
2959 else
2960 val &= ~L3_CLS_VALID;
2961 nw64(reg, val);
2962
2963 return 0;
2964}
2965
2966static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2967 int ipv6, u64 protocol_id,
2968 u64 tos_mask, u64 tos_val)
2969{
2970 unsigned long reg;
2971 u64 val;
2972
2973 if (class < CLASS_CODE_USER_PROG1 ||
2974 class > CLASS_CODE_USER_PROG4 ||
2975 (protocol_id & ~(u64)0xff) != 0 ||
2976 (tos_mask & ~(u64)0xff) != 0 ||
2977 (tos_val & ~(u64)0xff) != 0)
2978 return -EINVAL;
2979
2980 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2981 val = nr64(reg);
2982 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2983 L3_CLS_TOSMASK | L3_CLS_TOS);
2984 if (ipv6)
2985 val |= L3_CLS_IPVER;
2986 val |= (protocol_id << L3_CLS_PID_SHIFT);
2987 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2988 val |= (tos_val << L3_CLS_TOS_SHIFT);
2989 nw64(reg, val);
2990
2991 return 0;
2992}
2993
2994static int tcam_early_init(struct niu *np)
2995{
2996 unsigned long i;
2997 int err;
2998
2999 tcam_enable(np, 0);
3000 tcam_set_lat_and_ratio(np,
3001 DEFAULT_TCAM_LATENCY,
3002 DEFAULT_TCAM_ACCESS_RATIO);
3003 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3004 err = tcam_user_eth_class_enable(np, i, 0);
3005 if (err)
3006 return err;
3007 }
3008 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3009 err = tcam_user_ip_class_enable(np, i, 0);
3010 if (err)
3011 return err;
3012 }
3013
3014 return 0;
3015}
3016
3017static int tcam_flush_all(struct niu *np)
3018{
3019 unsigned long i;
3020
3021 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3022 int err = tcam_flush(np, i);
3023 if (err)
3024 return err;
3025 }
3026 return 0;
3027}
3028
3029static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3030{
3031 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3032}
3033
3034#if 0
3035static int hash_read(struct niu *np, unsigned long partition,
3036 unsigned long index, unsigned long num_entries,
3037 u64 *data)
3038{
3039 u64 val = hash_addr_regval(index, num_entries);
3040 unsigned long i;
3041
3042 if (partition >= FCRAM_NUM_PARTITIONS ||
3043 index + num_entries > FCRAM_SIZE)
3044 return -EINVAL;
3045
3046 nw64(HASH_TBL_ADDR(partition), val);
3047 for (i = 0; i < num_entries; i++)
3048 data[i] = nr64(HASH_TBL_DATA(partition));
3049
3050 return 0;
3051}
3052#endif
3053
3054static int hash_write(struct niu *np, unsigned long partition,
3055 unsigned long index, unsigned long num_entries,
3056 u64 *data)
3057{
3058 u64 val = hash_addr_regval(index, num_entries);
3059 unsigned long i;
3060
3061 if (partition >= FCRAM_NUM_PARTITIONS ||
3062 index + (num_entries * 8) > FCRAM_SIZE)
3063 return -EINVAL;
3064
3065 nw64(HASH_TBL_ADDR(partition), val);
3066 for (i = 0; i < num_entries; i++)
3067 nw64(HASH_TBL_DATA(partition), data[i]);
3068
3069 return 0;
3070}
3071
3072static void fflp_reset(struct niu *np)
3073{
3074 u64 val;
3075
3076 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3077 udelay(10);
3078 nw64(FFLP_CFG_1, 0);
3079
3080 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3081 nw64(FFLP_CFG_1, val);
3082}
3083
3084static void fflp_set_timings(struct niu *np)
3085{
3086 u64 val = nr64(FFLP_CFG_1);
3087
3088 val &= ~FFLP_CFG_1_FFLPINITDONE;
3089 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3090 nw64(FFLP_CFG_1, val);
3091
3092 val = nr64(FFLP_CFG_1);
3093 val |= FFLP_CFG_1_FFLPINITDONE;
3094 nw64(FFLP_CFG_1, val);
3095
3096 val = nr64(FCRAM_REF_TMR);
3097 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3098 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3099 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3100 nw64(FCRAM_REF_TMR, val);
3101}
3102
3103static int fflp_set_partition(struct niu *np, u64 partition,
3104 u64 mask, u64 base, int enable)
3105{
3106 unsigned long reg;
3107 u64 val;
3108
3109 if (partition >= FCRAM_NUM_PARTITIONS ||
3110 (mask & ~(u64)0x1f) != 0 ||
3111 (base & ~(u64)0x1f) != 0)
3112 return -EINVAL;
3113
3114 reg = FLW_PRT_SEL(partition);
3115
3116 val = nr64(reg);
3117 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3118 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3119 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3120 if (enable)
3121 val |= FLW_PRT_SEL_EXT;
3122 nw64(reg, val);
3123
3124 return 0;
3125}
3126
3127static int fflp_disable_all_partitions(struct niu *np)
3128{
3129 unsigned long i;
3130
3131 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3132 int err = fflp_set_partition(np, 0, 0, 0, 0);
3133 if (err)
3134 return err;
3135 }
3136 return 0;
3137}
3138
3139static void fflp_llcsnap_enable(struct niu *np, int on)
3140{
3141 u64 val = nr64(FFLP_CFG_1);
3142
3143 if (on)
3144 val |= FFLP_CFG_1_LLCSNAP;
3145 else
3146 val &= ~FFLP_CFG_1_LLCSNAP;
3147 nw64(FFLP_CFG_1, val);
3148}
3149
3150static void fflp_errors_enable(struct niu *np, int on)
3151{
3152 u64 val = nr64(FFLP_CFG_1);
3153
3154 if (on)
3155 val &= ~FFLP_CFG_1_ERRORDIS;
3156 else
3157 val |= FFLP_CFG_1_ERRORDIS;
3158 nw64(FFLP_CFG_1, val);
3159}
3160
3161static int fflp_hash_clear(struct niu *np)
3162{
3163 struct fcram_hash_ipv4 ent;
3164 unsigned long i;
3165
3166 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3167 memset(&ent, 0, sizeof(ent));
3168 ent.header = HASH_HEADER_EXT;
3169
3170 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3171 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3172 if (err)
3173 return err;
3174 }
3175 return 0;
3176}
3177
3178static int fflp_early_init(struct niu *np)
3179{
3180 struct niu_parent *parent;
3181 unsigned long flags;
3182 int err;
3183
3184 niu_lock_parent(np, flags);
3185
3186 parent = np->parent;
3187 err = 0;
3188 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3189 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3190 fflp_reset(np);
3191 fflp_set_timings(np);
3192 err = fflp_disable_all_partitions(np);
3193 if (err) {
3194 netif_printk(np, probe, KERN_DEBUG, np->dev,
3195 "fflp_disable_all_partitions failed, err=%d\n",
3196 err);
3197 goto out;
3198 }
3199 }
3200
3201 err = tcam_early_init(np);
3202 if (err) {
3203 netif_printk(np, probe, KERN_DEBUG, np->dev,
3204 "tcam_early_init failed, err=%d\n", err);
3205 goto out;
3206 }
3207 fflp_llcsnap_enable(np, 1);
3208 fflp_errors_enable(np, 0);
3209 nw64(H1POLY, 0);
3210 nw64(H2POLY, 0);
3211
3212 err = tcam_flush_all(np);
3213 if (err) {
3214 netif_printk(np, probe, KERN_DEBUG, np->dev,
3215 "tcam_flush_all failed, err=%d\n", err);
3216 goto out;
3217 }
3218 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3219 err = fflp_hash_clear(np);
3220 if (err) {
3221 netif_printk(np, probe, KERN_DEBUG, np->dev,
3222 "fflp_hash_clear failed, err=%d\n",
3223 err);
3224 goto out;
3225 }
3226 }
3227
3228 vlan_tbl_clear(np);
3229
3230 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3231 }
3232out:
3233 niu_unlock_parent(np, flags);
3234 return err;
3235}
3236
3237static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3238{
3239 if (class_code < CLASS_CODE_USER_PROG1 ||
3240 class_code > CLASS_CODE_SCTP_IPV6)
3241 return -EINVAL;
3242
3243 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3244 return 0;
3245}
3246
3247static int niu_set_tcam_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(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3254 return 0;
3255}
3256
3257/* Entries for the ports are interleaved in the TCAM */
3258static u16 tcam_get_index(struct niu *np, u16 idx)
3259{
3260 /* One entry reserved for IP fragment rule */
3261 if (idx >= (np->clas.tcam_sz - 1))
3262 idx = 0;
3263 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3264}
3265
3266static u16 tcam_get_size(struct niu *np)
3267{
3268 /* One entry reserved for IP fragment rule */
3269 return np->clas.tcam_sz - 1;
3270}
3271
3272static u16 tcam_get_valid_entry_cnt(struct niu *np)
3273{
3274 /* One entry reserved for IP fragment rule */
3275 return np->clas.tcam_valid_entries - 1;
3276}
3277
3278static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3279 u32 offset, u32 size, u32 truesize)
3280{
3281 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3282
3283 skb->len += size;
3284 skb->data_len += size;
3285 skb->truesize += truesize;
3286}
3287
3288static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3289{
3290 a >>= PAGE_SHIFT;
3291 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3292
3293 return a & (MAX_RBR_RING_SIZE - 1);
3294}
3295
3296static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3297 struct page ***link)
3298{
3299 unsigned int h = niu_hash_rxaddr(rp, addr);
3300 struct page *p, **pp;
3301
3302 addr &= PAGE_MASK;
3303 pp = &rp->rxhash[h];
3304 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3305 if (p->index == addr) {
3306 *link = pp;
3307 goto found;
3308 }
3309 }
3310 BUG();
3311
3312found:
3313 return p;
3314}
3315
3316static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3317{
3318 unsigned int h = niu_hash_rxaddr(rp, base);
3319
3320 page->index = base;
3321 page->mapping = (struct address_space *) rp->rxhash[h];
3322 rp->rxhash[h] = page;
3323}
3324
3325static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3326 gfp_t mask, int start_index)
3327{
3328 struct page *page;
3329 u64 addr;
3330 int i;
3331
3332 page = alloc_page(mask);
3333 if (!page)
3334 return -ENOMEM;
3335
3336 addr = np->ops->map_page(np->device, page, 0,
3337 PAGE_SIZE, DMA_FROM_DEVICE);
3338
3339 niu_hash_page(rp, page, addr);
3340 if (rp->rbr_blocks_per_page > 1)
3341 atomic_add(rp->rbr_blocks_per_page - 1,
3342 &compound_head(page)->_count);
3343
3344 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3345 __le32 *rbr = &rp->rbr[start_index + i];
3346
3347 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3348 addr += rp->rbr_block_size;
3349 }
3350
3351 return 0;
3352}
3353
3354static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3355{
3356 int index = rp->rbr_index;
3357
3358 rp->rbr_pending++;
3359 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3360 int err = niu_rbr_add_page(np, rp, mask, index);
3361
3362 if (unlikely(err)) {
3363 rp->rbr_pending--;
3364 return;
3365 }
3366
3367 rp->rbr_index += rp->rbr_blocks_per_page;
3368 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3369 if (rp->rbr_index == rp->rbr_table_size)
3370 rp->rbr_index = 0;
3371
3372 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3373 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3374 rp->rbr_pending = 0;
3375 }
3376 }
3377}
3378
3379static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3380{
3381 unsigned int index = rp->rcr_index;
3382 int num_rcr = 0;
3383
3384 rp->rx_dropped++;
3385 while (1) {
3386 struct page *page, **link;
3387 u64 addr, val;
3388 u32 rcr_size;
3389
3390 num_rcr++;
3391
3392 val = le64_to_cpup(&rp->rcr[index]);
3393 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3394 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3395 page = niu_find_rxpage(rp, addr, &link);
3396
3397 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3398 RCR_ENTRY_PKTBUFSZ_SHIFT];
3399 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3400 *link = (struct page *) page->mapping;
3401 np->ops->unmap_page(np->device, page->index,
3402 PAGE_SIZE, DMA_FROM_DEVICE);
3403 page->index = 0;
3404 page->mapping = NULL;
3405 __free_page(page);
3406 rp->rbr_refill_pending++;
3407 }
3408
3409 index = NEXT_RCR(rp, index);
3410 if (!(val & RCR_ENTRY_MULTI))
3411 break;
3412
3413 }
3414 rp->rcr_index = index;
3415
3416 return num_rcr;
3417}
3418
3419static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3420 struct rx_ring_info *rp)
3421{
3422 unsigned int index = rp->rcr_index;
3423 struct rx_pkt_hdr1 *rh;
3424 struct sk_buff *skb;
3425 int len, num_rcr;
3426
3427 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3428 if (unlikely(!skb))
3429 return niu_rx_pkt_ignore(np, rp);
3430
3431 num_rcr = 0;
3432 while (1) {
3433 struct page *page, **link;
3434 u32 rcr_size, append_size;
3435 u64 addr, val, off;
3436
3437 num_rcr++;
3438
3439 val = le64_to_cpup(&rp->rcr[index]);
3440
3441 len = (val & RCR_ENTRY_L2_LEN) >>
3442 RCR_ENTRY_L2_LEN_SHIFT;
3443 len -= ETH_FCS_LEN;
3444
3445 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3446 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3447 page = niu_find_rxpage(rp, addr, &link);
3448
3449 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3450 RCR_ENTRY_PKTBUFSZ_SHIFT];
3451
3452 off = addr & ~PAGE_MASK;
3453 append_size = rcr_size;
3454 if (num_rcr == 1) {
3455 int ptype;
3456
3457 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3458 if ((ptype == RCR_PKT_TYPE_TCP ||
3459 ptype == RCR_PKT_TYPE_UDP) &&
3460 !(val & (RCR_ENTRY_NOPORT |
3461 RCR_ENTRY_ERROR)))
3462 skb->ip_summed = CHECKSUM_UNNECESSARY;
3463 else
3464 skb_checksum_none_assert(skb);
3465 } else if (!(val & RCR_ENTRY_MULTI))
3466 append_size = len - skb->len;
3467
3468 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3469 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3470 *link = (struct page *) page->mapping;
3471 np->ops->unmap_page(np->device, page->index,
3472 PAGE_SIZE, DMA_FROM_DEVICE);
3473 page->index = 0;
3474 page->mapping = NULL;
3475 rp->rbr_refill_pending++;
3476 } else
3477 get_page(page);
3478
3479 index = NEXT_RCR(rp, index);
3480 if (!(val & RCR_ENTRY_MULTI))
3481 break;
3482
3483 }
3484 rp->rcr_index = index;
3485
3486 len += sizeof(*rh);
3487 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3488 __pskb_pull_tail(skb, len);
3489
3490 rh = (struct rx_pkt_hdr1 *) skb->data;
3491 if (np->dev->features & NETIF_F_RXHASH)
3492 skb->rxhash = ((u32)rh->hashval2_0 << 24 |
3493 (u32)rh->hashval2_1 << 16 |
3494 (u32)rh->hashval1_1 << 8 |
3495 (u32)rh->hashval1_2 << 0);
3496 skb_pull(skb, sizeof(*rh));
3497
3498 rp->rx_packets++;
3499 rp->rx_bytes += skb->len;
3500
3501 skb->protocol = eth_type_trans(skb, np->dev);
3502 skb_record_rx_queue(skb, rp->rx_channel);
3503 napi_gro_receive(napi, skb);
3504
3505 return num_rcr;
3506}
3507
3508static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3509{
3510 int blocks_per_page = rp->rbr_blocks_per_page;
3511 int err, index = rp->rbr_index;
3512
3513 err = 0;
3514 while (index < (rp->rbr_table_size - blocks_per_page)) {
3515 err = niu_rbr_add_page(np, rp, mask, index);
3516 if (err)
3517 break;
3518
3519 index += blocks_per_page;
3520 }
3521
3522 rp->rbr_index = index;
3523 return err;
3524}
3525
3526static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3527{
3528 int i;
3529
3530 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3531 struct page *page;
3532
3533 page = rp->rxhash[i];
3534 while (page) {
3535 struct page *next = (struct page *) page->mapping;
3536 u64 base = page->index;
3537
3538 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3539 DMA_FROM_DEVICE);
3540 page->index = 0;
3541 page->mapping = NULL;
3542
3543 __free_page(page);
3544
3545 page = next;
3546 }
3547 }
3548
3549 for (i = 0; i < rp->rbr_table_size; i++)
3550 rp->rbr[i] = cpu_to_le32(0);
3551 rp->rbr_index = 0;
3552}
3553
3554static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3555{
3556 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3557 struct sk_buff *skb = tb->skb;
3558 struct tx_pkt_hdr *tp;
3559 u64 tx_flags;
3560 int i, len;
3561
3562 tp = (struct tx_pkt_hdr *) skb->data;
3563 tx_flags = le64_to_cpup(&tp->flags);
3564
3565 rp->tx_packets++;
3566 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3567 ((tx_flags & TXHDR_PAD) / 2));
3568
3569 len = skb_headlen(skb);
3570 np->ops->unmap_single(np->device, tb->mapping,
3571 len, DMA_TO_DEVICE);
3572
3573 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3574 rp->mark_pending--;
3575
3576 tb->skb = NULL;
3577 do {
3578 idx = NEXT_TX(rp, idx);
3579 len -= MAX_TX_DESC_LEN;
3580 } while (len > 0);
3581
3582 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3583 tb = &rp->tx_buffs[idx];
3584 BUG_ON(tb->skb != NULL);
3585 np->ops->unmap_page(np->device, tb->mapping,
3586 skb_frag_size(&skb_shinfo(skb)->frags[i]),
3587 DMA_TO_DEVICE);
3588 idx = NEXT_TX(rp, idx);
3589 }
3590
3591 dev_kfree_skb(skb);
3592
3593 return idx;
3594}
3595
3596#define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3597
3598static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3599{
3600 struct netdev_queue *txq;
3601 u16 pkt_cnt, tmp;
3602 int cons, index;
3603 u64 cs;
3604
3605 index = (rp - np->tx_rings);
3606 txq = netdev_get_tx_queue(np->dev, index);
3607
3608 cs = rp->tx_cs;
3609 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3610 goto out;
3611
3612 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3613 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3614 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3615
3616 rp->last_pkt_cnt = tmp;
3617
3618 cons = rp->cons;
3619
3620 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3621 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3622
3623 while (pkt_cnt--)
3624 cons = release_tx_packet(np, rp, cons);
3625
3626 rp->cons = cons;
3627 smp_mb();
3628
3629out:
3630 if (unlikely(netif_tx_queue_stopped(txq) &&
3631 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3632 __netif_tx_lock(txq, smp_processor_id());
3633 if (netif_tx_queue_stopped(txq) &&
3634 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3635 netif_tx_wake_queue(txq);
3636 __netif_tx_unlock(txq);
3637 }
3638}
3639
3640static inline void niu_sync_rx_discard_stats(struct niu *np,
3641 struct rx_ring_info *rp,
3642 const int limit)
3643{
3644 /* This elaborate scheme is needed for reading the RX discard
3645 * counters, as they are only 16-bit and can overflow quickly,
3646 * and because the overflow indication bit is not usable as
3647 * the counter value does not wrap, but remains at max value
3648 * 0xFFFF.
3649 *
3650 * In theory and in practice counters can be lost in between
3651 * reading nr64() and clearing the counter nw64(). For this
3652 * reason, the number of counter clearings nw64() is
3653 * limited/reduced though the limit parameter.
3654 */
3655 int rx_channel = rp->rx_channel;
3656 u32 misc, wred;
3657
3658 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3659 * following discard events: IPP (Input Port Process),
3660 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3661 * Block Ring) prefetch buffer is empty.
3662 */
3663 misc = nr64(RXMISC(rx_channel));
3664 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3665 nw64(RXMISC(rx_channel), 0);
3666 rp->rx_errors += misc & RXMISC_COUNT;
3667
3668 if (unlikely(misc & RXMISC_OFLOW))
3669 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3670 rx_channel);
3671
3672 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3673 "rx-%d: MISC drop=%u over=%u\n",
3674 rx_channel, misc, misc-limit);
3675 }
3676
3677 /* WRED (Weighted Random Early Discard) by hardware */
3678 wred = nr64(RED_DIS_CNT(rx_channel));
3679 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3680 nw64(RED_DIS_CNT(rx_channel), 0);
3681 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3682
3683 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3684 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3685
3686 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3687 "rx-%d: WRED drop=%u over=%u\n",
3688 rx_channel, wred, wred-limit);
3689 }
3690}
3691
3692static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3693 struct rx_ring_info *rp, int budget)
3694{
3695 int qlen, rcr_done = 0, work_done = 0;
3696 struct rxdma_mailbox *mbox = rp->mbox;
3697 u64 stat;
3698
3699#if 1
3700 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3701 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3702#else
3703 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3704 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3705#endif
3706 mbox->rx_dma_ctl_stat = 0;
3707 mbox->rcrstat_a = 0;
3708
3709 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3710 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3711 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3712
3713 rcr_done = work_done = 0;
3714 qlen = min(qlen, budget);
3715 while (work_done < qlen) {
3716 rcr_done += niu_process_rx_pkt(napi, np, rp);
3717 work_done++;
3718 }
3719
3720 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3721 unsigned int i;
3722
3723 for (i = 0; i < rp->rbr_refill_pending; i++)
3724 niu_rbr_refill(np, rp, GFP_ATOMIC);
3725 rp->rbr_refill_pending = 0;
3726 }
3727
3728 stat = (RX_DMA_CTL_STAT_MEX |
3729 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3730 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3731
3732 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3733
3734 /* Only sync discards stats when qlen indicate potential for drops */
3735 if (qlen > 10)
3736 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3737
3738 return work_done;
3739}
3740
3741static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3742{
3743 u64 v0 = lp->v0;
3744 u32 tx_vec = (v0 >> 32);
3745 u32 rx_vec = (v0 & 0xffffffff);
3746 int i, work_done = 0;
3747
3748 netif_printk(np, intr, KERN_DEBUG, np->dev,
3749 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3750
3751 for (i = 0; i < np->num_tx_rings; i++) {
3752 struct tx_ring_info *rp = &np->tx_rings[i];
3753 if (tx_vec & (1 << rp->tx_channel))
3754 niu_tx_work(np, rp);
3755 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3756 }
3757
3758 for (i = 0; i < np->num_rx_rings; i++) {
3759 struct rx_ring_info *rp = &np->rx_rings[i];
3760
3761 if (rx_vec & (1 << rp->rx_channel)) {
3762 int this_work_done;
3763
3764 this_work_done = niu_rx_work(&lp->napi, np, rp,
3765 budget);
3766
3767 budget -= this_work_done;
3768 work_done += this_work_done;
3769 }
3770 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3771 }
3772
3773 return work_done;
3774}
3775
3776static int niu_poll(struct napi_struct *napi, int budget)
3777{
3778 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3779 struct niu *np = lp->np;
3780 int work_done;
3781
3782 work_done = niu_poll_core(np, lp, budget);
3783
3784 if (work_done < budget) {
3785 napi_complete(napi);
3786 niu_ldg_rearm(np, lp, 1);
3787 }
3788 return work_done;
3789}
3790
3791static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3792 u64 stat)
3793{
3794 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3795
3796 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3797 pr_cont("RBR_TMOUT ");
3798 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3799 pr_cont("RSP_CNT ");
3800 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3801 pr_cont("BYTE_EN_BUS ");
3802 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3803 pr_cont("RSP_DAT ");
3804 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3805 pr_cont("RCR_ACK ");
3806 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3807 pr_cont("RCR_SHA_PAR ");
3808 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3809 pr_cont("RBR_PRE_PAR ");
3810 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3811 pr_cont("CONFIG ");
3812 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3813 pr_cont("RCRINCON ");
3814 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3815 pr_cont("RCRFULL ");
3816 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3817 pr_cont("RBRFULL ");
3818 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3819 pr_cont("RBRLOGPAGE ");
3820 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3821 pr_cont("CFIGLOGPAGE ");
3822 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3823 pr_cont("DC_FIDO ");
3824
3825 pr_cont(")\n");
3826}
3827
3828static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3829{
3830 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3831 int err = 0;
3832
3833
3834 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3835 RX_DMA_CTL_STAT_PORT_FATAL))
3836 err = -EINVAL;
3837
3838 if (err) {
3839 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3840 rp->rx_channel,
3841 (unsigned long long) stat);
3842
3843 niu_log_rxchan_errors(np, rp, stat);
3844 }
3845
3846 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3847 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3848
3849 return err;
3850}
3851
3852static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3853 u64 cs)
3854{
3855 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3856
3857 if (cs & TX_CS_MBOX_ERR)
3858 pr_cont("MBOX ");
3859 if (cs & TX_CS_PKT_SIZE_ERR)
3860 pr_cont("PKT_SIZE ");
3861 if (cs & TX_CS_TX_RING_OFLOW)
3862 pr_cont("TX_RING_OFLOW ");
3863 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3864 pr_cont("PREF_BUF_PAR ");
3865 if (cs & TX_CS_NACK_PREF)
3866 pr_cont("NACK_PREF ");
3867 if (cs & TX_CS_NACK_PKT_RD)
3868 pr_cont("NACK_PKT_RD ");
3869 if (cs & TX_CS_CONF_PART_ERR)
3870 pr_cont("CONF_PART ");
3871 if (cs & TX_CS_PKT_PRT_ERR)
3872 pr_cont("PKT_PTR ");
3873
3874 pr_cont(")\n");
3875}
3876
3877static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3878{
3879 u64 cs, logh, logl;
3880
3881 cs = nr64(TX_CS(rp->tx_channel));
3882 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3883 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3884
3885 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3886 rp->tx_channel,
3887 (unsigned long long)cs,
3888 (unsigned long long)logh,
3889 (unsigned long long)logl);
3890
3891 niu_log_txchan_errors(np, rp, cs);
3892
3893 return -ENODEV;
3894}
3895
3896static int niu_mif_interrupt(struct niu *np)
3897{
3898 u64 mif_status = nr64(MIF_STATUS);
3899 int phy_mdint = 0;
3900
3901 if (np->flags & NIU_FLAGS_XMAC) {
3902 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3903
3904 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3905 phy_mdint = 1;
3906 }
3907
3908 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3909 (unsigned long long)mif_status, phy_mdint);
3910
3911 return -ENODEV;
3912}
3913
3914static void niu_xmac_interrupt(struct niu *np)
3915{
3916 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3917 u64 val;
3918
3919 val = nr64_mac(XTXMAC_STATUS);
3920 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3921 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3922 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3923 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3924 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3925 mp->tx_fifo_errors++;
3926 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3927 mp->tx_overflow_errors++;
3928 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3929 mp->tx_max_pkt_size_errors++;
3930 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3931 mp->tx_underflow_errors++;
3932
3933 val = nr64_mac(XRXMAC_STATUS);
3934 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3935 mp->rx_local_faults++;
3936 if (val & XRXMAC_STATUS_RFLT_DET)
3937 mp->rx_remote_faults++;
3938 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3939 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3940 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3941 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3942 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3943 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3944 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3945 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3946 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3947 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3948 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3949 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3950 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3951 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3952 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3953 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3954 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3955 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3956 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3957 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3958 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3959 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3960 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3961 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3962 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3963 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3964 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3965 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3966 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3967 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3968 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3969 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3970 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3971 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3972 if (val & XRXMAC_STATUS_RXUFLOW)
3973 mp->rx_underflows++;
3974 if (val & XRXMAC_STATUS_RXOFLOW)
3975 mp->rx_overflows++;
3976
3977 val = nr64_mac(XMAC_FC_STAT);
3978 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3979 mp->pause_off_state++;
3980 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3981 mp->pause_on_state++;
3982 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3983 mp->pause_received++;
3984}
3985
3986static void niu_bmac_interrupt(struct niu *np)
3987{
3988 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3989 u64 val;
3990
3991 val = nr64_mac(BTXMAC_STATUS);
3992 if (val & BTXMAC_STATUS_UNDERRUN)
3993 mp->tx_underflow_errors++;
3994 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3995 mp->tx_max_pkt_size_errors++;
3996 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
3997 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
3998 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
3999 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4000
4001 val = nr64_mac(BRXMAC_STATUS);
4002 if (val & BRXMAC_STATUS_OVERFLOW)
4003 mp->rx_overflows++;
4004 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4005 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4006 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4007 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4008 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4009 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4010 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4011 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4012
4013 val = nr64_mac(BMAC_CTRL_STATUS);
4014 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4015 mp->pause_off_state++;
4016 if (val & BMAC_CTRL_STATUS_PAUSE)
4017 mp->pause_on_state++;
4018 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4019 mp->pause_received++;
4020}
4021
4022static int niu_mac_interrupt(struct niu *np)
4023{
4024 if (np->flags & NIU_FLAGS_XMAC)
4025 niu_xmac_interrupt(np);
4026 else
4027 niu_bmac_interrupt(np);
4028
4029 return 0;
4030}
4031
4032static void niu_log_device_error(struct niu *np, u64 stat)
4033{
4034 netdev_err(np->dev, "Core device errors ( ");
4035
4036 if (stat & SYS_ERR_MASK_META2)
4037 pr_cont("META2 ");
4038 if (stat & SYS_ERR_MASK_META1)
4039 pr_cont("META1 ");
4040 if (stat & SYS_ERR_MASK_PEU)
4041 pr_cont("PEU ");
4042 if (stat & SYS_ERR_MASK_TXC)
4043 pr_cont("TXC ");
4044 if (stat & SYS_ERR_MASK_RDMC)
4045 pr_cont("RDMC ");
4046 if (stat & SYS_ERR_MASK_TDMC)
4047 pr_cont("TDMC ");
4048 if (stat & SYS_ERR_MASK_ZCP)
4049 pr_cont("ZCP ");
4050 if (stat & SYS_ERR_MASK_FFLP)
4051 pr_cont("FFLP ");
4052 if (stat & SYS_ERR_MASK_IPP)
4053 pr_cont("IPP ");
4054 if (stat & SYS_ERR_MASK_MAC)
4055 pr_cont("MAC ");
4056 if (stat & SYS_ERR_MASK_SMX)
4057 pr_cont("SMX ");
4058
4059 pr_cont(")\n");
4060}
4061
4062static int niu_device_error(struct niu *np)
4063{
4064 u64 stat = nr64(SYS_ERR_STAT);
4065
4066 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4067 (unsigned long long)stat);
4068
4069 niu_log_device_error(np, stat);
4070
4071 return -ENODEV;
4072}
4073
4074static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4075 u64 v0, u64 v1, u64 v2)
4076{
4077
4078 int i, err = 0;
4079
4080 lp->v0 = v0;
4081 lp->v1 = v1;
4082 lp->v2 = v2;
4083
4084 if (v1 & 0x00000000ffffffffULL) {
4085 u32 rx_vec = (v1 & 0xffffffff);
4086
4087 for (i = 0; i < np->num_rx_rings; i++) {
4088 struct rx_ring_info *rp = &np->rx_rings[i];
4089
4090 if (rx_vec & (1 << rp->rx_channel)) {
4091 int r = niu_rx_error(np, rp);
4092 if (r) {
4093 err = r;
4094 } else {
4095 if (!v0)
4096 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4097 RX_DMA_CTL_STAT_MEX);
4098 }
4099 }
4100 }
4101 }
4102 if (v1 & 0x7fffffff00000000ULL) {
4103 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4104
4105 for (i = 0; i < np->num_tx_rings; i++) {
4106 struct tx_ring_info *rp = &np->tx_rings[i];
4107
4108 if (tx_vec & (1 << rp->tx_channel)) {
4109 int r = niu_tx_error(np, rp);
4110 if (r)
4111 err = r;
4112 }
4113 }
4114 }
4115 if ((v0 | v1) & 0x8000000000000000ULL) {
4116 int r = niu_mif_interrupt(np);
4117 if (r)
4118 err = r;
4119 }
4120 if (v2) {
4121 if (v2 & 0x01ef) {
4122 int r = niu_mac_interrupt(np);
4123 if (r)
4124 err = r;
4125 }
4126 if (v2 & 0x0210) {
4127 int r = niu_device_error(np);
4128 if (r)
4129 err = r;
4130 }
4131 }
4132
4133 if (err)
4134 niu_enable_interrupts(np, 0);
4135
4136 return err;
4137}
4138
4139static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4140 int ldn)
4141{
4142 struct rxdma_mailbox *mbox = rp->mbox;
4143 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4144
4145 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4146 RX_DMA_CTL_STAT_RCRTO);
4147 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4148
4149 netif_printk(np, intr, KERN_DEBUG, np->dev,
4150 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4151}
4152
4153static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4154 int ldn)
4155{
4156 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4157
4158 netif_printk(np, intr, KERN_DEBUG, np->dev,
4159 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4160}
4161
4162static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4163{
4164 struct niu_parent *parent = np->parent;
4165 u32 rx_vec, tx_vec;
4166 int i;
4167
4168 tx_vec = (v0 >> 32);
4169 rx_vec = (v0 & 0xffffffff);
4170
4171 for (i = 0; i < np->num_rx_rings; i++) {
4172 struct rx_ring_info *rp = &np->rx_rings[i];
4173 int ldn = LDN_RXDMA(rp->rx_channel);
4174
4175 if (parent->ldg_map[ldn] != ldg)
4176 continue;
4177
4178 nw64(LD_IM0(ldn), LD_IM0_MASK);
4179 if (rx_vec & (1 << rp->rx_channel))
4180 niu_rxchan_intr(np, rp, ldn);
4181 }
4182
4183 for (i = 0; i < np->num_tx_rings; i++) {
4184 struct tx_ring_info *rp = &np->tx_rings[i];
4185 int ldn = LDN_TXDMA(rp->tx_channel);
4186
4187 if (parent->ldg_map[ldn] != ldg)
4188 continue;
4189
4190 nw64(LD_IM0(ldn), LD_IM0_MASK);
4191 if (tx_vec & (1 << rp->tx_channel))
4192 niu_txchan_intr(np, rp, ldn);
4193 }
4194}
4195
4196static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4197 u64 v0, u64 v1, u64 v2)
4198{
4199 if (likely(napi_schedule_prep(&lp->napi))) {
4200 lp->v0 = v0;
4201 lp->v1 = v1;
4202 lp->v2 = v2;
4203 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4204 __napi_schedule(&lp->napi);
4205 }
4206}
4207
4208static irqreturn_t niu_interrupt(int irq, void *dev_id)
4209{
4210 struct niu_ldg *lp = dev_id;
4211 struct niu *np = lp->np;
4212 int ldg = lp->ldg_num;
4213 unsigned long flags;
4214 u64 v0, v1, v2;
4215
4216 if (netif_msg_intr(np))
4217 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4218 __func__, lp, ldg);
4219
4220 spin_lock_irqsave(&np->lock, flags);
4221
4222 v0 = nr64(LDSV0(ldg));
4223 v1 = nr64(LDSV1(ldg));
4224 v2 = nr64(LDSV2(ldg));
4225
4226 if (netif_msg_intr(np))
4227 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4228 (unsigned long long) v0,
4229 (unsigned long long) v1,
4230 (unsigned long long) v2);
4231
4232 if (unlikely(!v0 && !v1 && !v2)) {
4233 spin_unlock_irqrestore(&np->lock, flags);
4234 return IRQ_NONE;
4235 }
4236
4237 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4238 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4239 if (err)
4240 goto out;
4241 }
4242 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4243 niu_schedule_napi(np, lp, v0, v1, v2);
4244 else
4245 niu_ldg_rearm(np, lp, 1);
4246out:
4247 spin_unlock_irqrestore(&np->lock, flags);
4248
4249 return IRQ_HANDLED;
4250}
4251
4252static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4253{
4254 if (rp->mbox) {
4255 np->ops->free_coherent(np->device,
4256 sizeof(struct rxdma_mailbox),
4257 rp->mbox, rp->mbox_dma);
4258 rp->mbox = NULL;
4259 }
4260 if (rp->rcr) {
4261 np->ops->free_coherent(np->device,
4262 MAX_RCR_RING_SIZE * sizeof(__le64),
4263 rp->rcr, rp->rcr_dma);
4264 rp->rcr = NULL;
4265 rp->rcr_table_size = 0;
4266 rp->rcr_index = 0;
4267 }
4268 if (rp->rbr) {
4269 niu_rbr_free(np, rp);
4270
4271 np->ops->free_coherent(np->device,
4272 MAX_RBR_RING_SIZE * sizeof(__le32),
4273 rp->rbr, rp->rbr_dma);
4274 rp->rbr = NULL;
4275 rp->rbr_table_size = 0;
4276 rp->rbr_index = 0;
4277 }
4278 kfree(rp->rxhash);
4279 rp->rxhash = NULL;
4280}
4281
4282static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4283{
4284 if (rp->mbox) {
4285 np->ops->free_coherent(np->device,
4286 sizeof(struct txdma_mailbox),
4287 rp->mbox, rp->mbox_dma);
4288 rp->mbox = NULL;
4289 }
4290 if (rp->descr) {
4291 int i;
4292
4293 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4294 if (rp->tx_buffs[i].skb)
4295 (void) release_tx_packet(np, rp, i);
4296 }
4297
4298 np->ops->free_coherent(np->device,
4299 MAX_TX_RING_SIZE * sizeof(__le64),
4300 rp->descr, rp->descr_dma);
4301 rp->descr = NULL;
4302 rp->pending = 0;
4303 rp->prod = 0;
4304 rp->cons = 0;
4305 rp->wrap_bit = 0;
4306 }
4307}
4308
4309static void niu_free_channels(struct niu *np)
4310{
4311 int i;
4312
4313 if (np->rx_rings) {
4314 for (i = 0; i < np->num_rx_rings; i++) {
4315 struct rx_ring_info *rp = &np->rx_rings[i];
4316
4317 niu_free_rx_ring_info(np, rp);
4318 }
4319 kfree(np->rx_rings);
4320 np->rx_rings = NULL;
4321 np->num_rx_rings = 0;
4322 }
4323
4324 if (np->tx_rings) {
4325 for (i = 0; i < np->num_tx_rings; i++) {
4326 struct tx_ring_info *rp = &np->tx_rings[i];
4327
4328 niu_free_tx_ring_info(np, rp);
4329 }
4330 kfree(np->tx_rings);
4331 np->tx_rings = NULL;
4332 np->num_tx_rings = 0;
4333 }
4334}
4335
4336static int niu_alloc_rx_ring_info(struct niu *np,
4337 struct rx_ring_info *rp)
4338{
4339 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4340
4341 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4342 GFP_KERNEL);
4343 if (!rp->rxhash)
4344 return -ENOMEM;
4345
4346 rp->mbox = np->ops->alloc_coherent(np->device,
4347 sizeof(struct rxdma_mailbox),
4348 &rp->mbox_dma, GFP_KERNEL);
4349 if (!rp->mbox)
4350 return -ENOMEM;
4351 if ((unsigned long)rp->mbox & (64UL - 1)) {
4352 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4353 rp->mbox);
4354 return -EINVAL;
4355 }
4356
4357 rp->rcr = np->ops->alloc_coherent(np->device,
4358 MAX_RCR_RING_SIZE * sizeof(__le64),
4359 &rp->rcr_dma, GFP_KERNEL);
4360 if (!rp->rcr)
4361 return -ENOMEM;
4362 if ((unsigned long)rp->rcr & (64UL - 1)) {
4363 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4364 rp->rcr);
4365 return -EINVAL;
4366 }
4367 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4368 rp->rcr_index = 0;
4369
4370 rp->rbr = np->ops->alloc_coherent(np->device,
4371 MAX_RBR_RING_SIZE * sizeof(__le32),
4372 &rp->rbr_dma, GFP_KERNEL);
4373 if (!rp->rbr)
4374 return -ENOMEM;
4375 if ((unsigned long)rp->rbr & (64UL - 1)) {
4376 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4377 rp->rbr);
4378 return -EINVAL;
4379 }
4380 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4381 rp->rbr_index = 0;
4382 rp->rbr_pending = 0;
4383
4384 return 0;
4385}
4386
4387static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4388{
4389 int mtu = np->dev->mtu;
4390
4391 /* These values are recommended by the HW designers for fair
4392 * utilization of DRR amongst the rings.
4393 */
4394 rp->max_burst = mtu + 32;
4395 if (rp->max_burst > 4096)
4396 rp->max_burst = 4096;
4397}
4398
4399static int niu_alloc_tx_ring_info(struct niu *np,
4400 struct tx_ring_info *rp)
4401{
4402 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4403
4404 rp->mbox = np->ops->alloc_coherent(np->device,
4405 sizeof(struct txdma_mailbox),
4406 &rp->mbox_dma, GFP_KERNEL);
4407 if (!rp->mbox)
4408 return -ENOMEM;
4409 if ((unsigned long)rp->mbox & (64UL - 1)) {
4410 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4411 rp->mbox);
4412 return -EINVAL;
4413 }
4414
4415 rp->descr = np->ops->alloc_coherent(np->device,
4416 MAX_TX_RING_SIZE * sizeof(__le64),
4417 &rp->descr_dma, GFP_KERNEL);
4418 if (!rp->descr)
4419 return -ENOMEM;
4420 if ((unsigned long)rp->descr & (64UL - 1)) {
4421 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4422 rp->descr);
4423 return -EINVAL;
4424 }
4425
4426 rp->pending = MAX_TX_RING_SIZE;
4427 rp->prod = 0;
4428 rp->cons = 0;
4429 rp->wrap_bit = 0;
4430
4431 /* XXX make these configurable... XXX */
4432 rp->mark_freq = rp->pending / 4;
4433
4434 niu_set_max_burst(np, rp);
4435
4436 return 0;
4437}
4438
4439static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4440{
4441 u16 bss;
4442
4443 bss = min(PAGE_SHIFT, 15);
4444
4445 rp->rbr_block_size = 1 << bss;
4446 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4447
4448 rp->rbr_sizes[0] = 256;
4449 rp->rbr_sizes[1] = 1024;
4450 if (np->dev->mtu > ETH_DATA_LEN) {
4451 switch (PAGE_SIZE) {
4452 case 4 * 1024:
4453 rp->rbr_sizes[2] = 4096;
4454 break;
4455
4456 default:
4457 rp->rbr_sizes[2] = 8192;
4458 break;
4459 }
4460 } else {
4461 rp->rbr_sizes[2] = 2048;
4462 }
4463 rp->rbr_sizes[3] = rp->rbr_block_size;
4464}
4465
4466static int niu_alloc_channels(struct niu *np)
4467{
4468 struct niu_parent *parent = np->parent;
4469 int first_rx_channel, first_tx_channel;
4470 int num_rx_rings, num_tx_rings;
4471 struct rx_ring_info *rx_rings;
4472 struct tx_ring_info *tx_rings;
4473 int i, port, err;
4474
4475 port = np->port;
4476 first_rx_channel = first_tx_channel = 0;
4477 for (i = 0; i < port; i++) {
4478 first_rx_channel += parent->rxchan_per_port[i];
4479 first_tx_channel += parent->txchan_per_port[i];
4480 }
4481
4482 num_rx_rings = parent->rxchan_per_port[port];
4483 num_tx_rings = parent->txchan_per_port[port];
4484
4485 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4486 GFP_KERNEL);
4487 err = -ENOMEM;
4488 if (!rx_rings)
4489 goto out_err;
4490
4491 np->num_rx_rings = num_rx_rings;
4492 smp_wmb();
4493 np->rx_rings = rx_rings;
4494
4495 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4496
4497 for (i = 0; i < np->num_rx_rings; i++) {
4498 struct rx_ring_info *rp = &np->rx_rings[i];
4499
4500 rp->np = np;
4501 rp->rx_channel = first_rx_channel + i;
4502
4503 err = niu_alloc_rx_ring_info(np, rp);
4504 if (err)
4505 goto out_err;
4506
4507 niu_size_rbr(np, rp);
4508
4509 /* XXX better defaults, configurable, etc... XXX */
4510 rp->nonsyn_window = 64;
4511 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4512 rp->syn_window = 64;
4513 rp->syn_threshold = rp->rcr_table_size - 64;
4514 rp->rcr_pkt_threshold = 16;
4515 rp->rcr_timeout = 8;
4516 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4517 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4518 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4519
4520 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4521 if (err)
4522 return err;
4523 }
4524
4525 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4526 GFP_KERNEL);
4527 err = -ENOMEM;
4528 if (!tx_rings)
4529 goto out_err;
4530
4531 np->num_tx_rings = num_tx_rings;
4532 smp_wmb();
4533 np->tx_rings = tx_rings;
4534
4535 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4536
4537 for (i = 0; i < np->num_tx_rings; i++) {
4538 struct tx_ring_info *rp = &np->tx_rings[i];
4539
4540 rp->np = np;
4541 rp->tx_channel = first_tx_channel + i;
4542
4543 err = niu_alloc_tx_ring_info(np, rp);
4544 if (err)
4545 goto out_err;
4546 }
4547
4548 return 0;
4549
4550out_err:
4551 niu_free_channels(np);
4552 return err;
4553}
4554
4555static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4556{
4557 int limit = 1000;
4558
4559 while (--limit > 0) {
4560 u64 val = nr64(TX_CS(channel));
4561 if (val & TX_CS_SNG_STATE)
4562 return 0;
4563 }
4564 return -ENODEV;
4565}
4566
4567static int niu_tx_channel_stop(struct niu *np, int channel)
4568{
4569 u64 val = nr64(TX_CS(channel));
4570
4571 val |= TX_CS_STOP_N_GO;
4572 nw64(TX_CS(channel), val);
4573
4574 return niu_tx_cs_sng_poll(np, channel);
4575}
4576
4577static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4578{
4579 int limit = 1000;
4580
4581 while (--limit > 0) {
4582 u64 val = nr64(TX_CS(channel));
4583 if (!(val & TX_CS_RST))
4584 return 0;
4585 }
4586 return -ENODEV;
4587}
4588
4589static int niu_tx_channel_reset(struct niu *np, int channel)
4590{
4591 u64 val = nr64(TX_CS(channel));
4592 int err;
4593
4594 val |= TX_CS_RST;
4595 nw64(TX_CS(channel), val);
4596
4597 err = niu_tx_cs_reset_poll(np, channel);
4598 if (!err)
4599 nw64(TX_RING_KICK(channel), 0);
4600
4601 return err;
4602}
4603
4604static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4605{
4606 u64 val;
4607
4608 nw64(TX_LOG_MASK1(channel), 0);
4609 nw64(TX_LOG_VAL1(channel), 0);
4610 nw64(TX_LOG_MASK2(channel), 0);
4611 nw64(TX_LOG_VAL2(channel), 0);
4612 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4613 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4614 nw64(TX_LOG_PAGE_HDL(channel), 0);
4615
4616 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4617 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4618 nw64(TX_LOG_PAGE_VLD(channel), val);
4619
4620 /* XXX TXDMA 32bit mode? XXX */
4621
4622 return 0;
4623}
4624
4625static void niu_txc_enable_port(struct niu *np, int on)
4626{
4627 unsigned long flags;
4628 u64 val, mask;
4629
4630 niu_lock_parent(np, flags);
4631 val = nr64(TXC_CONTROL);
4632 mask = (u64)1 << np->port;
4633 if (on) {
4634 val |= TXC_CONTROL_ENABLE | mask;
4635 } else {
4636 val &= ~mask;
4637 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4638 val &= ~TXC_CONTROL_ENABLE;
4639 }
4640 nw64(TXC_CONTROL, val);
4641 niu_unlock_parent(np, flags);
4642}
4643
4644static void niu_txc_set_imask(struct niu *np, u64 imask)
4645{
4646 unsigned long flags;
4647 u64 val;
4648
4649 niu_lock_parent(np, flags);
4650 val = nr64(TXC_INT_MASK);
4651 val &= ~TXC_INT_MASK_VAL(np->port);
4652 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4653 niu_unlock_parent(np, flags);
4654}
4655
4656static void niu_txc_port_dma_enable(struct niu *np, int on)
4657{
4658 u64 val = 0;
4659
4660 if (on) {
4661 int i;
4662
4663 for (i = 0; i < np->num_tx_rings; i++)
4664 val |= (1 << np->tx_rings[i].tx_channel);
4665 }
4666 nw64(TXC_PORT_DMA(np->port), val);
4667}
4668
4669static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4670{
4671 int err, channel = rp->tx_channel;
4672 u64 val, ring_len;
4673
4674 err = niu_tx_channel_stop(np, channel);
4675 if (err)
4676 return err;
4677
4678 err = niu_tx_channel_reset(np, channel);
4679 if (err)
4680 return err;
4681
4682 err = niu_tx_channel_lpage_init(np, channel);
4683 if (err)
4684 return err;
4685
4686 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4687 nw64(TX_ENT_MSK(channel), 0);
4688
4689 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4690 TX_RNG_CFIG_STADDR)) {
4691 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4692 channel, (unsigned long long)rp->descr_dma);
4693 return -EINVAL;
4694 }
4695
4696 /* The length field in TX_RNG_CFIG is measured in 64-byte
4697 * blocks. rp->pending is the number of TX descriptors in
4698 * our ring, 8 bytes each, thus we divide by 8 bytes more
4699 * to get the proper value the chip wants.
4700 */
4701 ring_len = (rp->pending / 8);
4702
4703 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4704 rp->descr_dma);
4705 nw64(TX_RNG_CFIG(channel), val);
4706
4707 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4708 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4709 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4710 channel, (unsigned long long)rp->mbox_dma);
4711 return -EINVAL;
4712 }
4713 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4714 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4715
4716 nw64(TX_CS(channel), 0);
4717
4718 rp->last_pkt_cnt = 0;
4719
4720 return 0;
4721}
4722
4723static void niu_init_rdc_groups(struct niu *np)
4724{
4725 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4726 int i, first_table_num = tp->first_table_num;
4727
4728 for (i = 0; i < tp->num_tables; i++) {
4729 struct rdc_table *tbl = &tp->tables[i];
4730 int this_table = first_table_num + i;
4731 int slot;
4732
4733 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4734 nw64(RDC_TBL(this_table, slot),
4735 tbl->rxdma_channel[slot]);
4736 }
4737
4738 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4739}
4740
4741static void niu_init_drr_weight(struct niu *np)
4742{
4743 int type = phy_decode(np->parent->port_phy, np->port);
4744 u64 val;
4745
4746 switch (type) {
4747 case PORT_TYPE_10G:
4748 val = PT_DRR_WEIGHT_DEFAULT_10G;
4749 break;
4750
4751 case PORT_TYPE_1G:
4752 default:
4753 val = PT_DRR_WEIGHT_DEFAULT_1G;
4754 break;
4755 }
4756 nw64(PT_DRR_WT(np->port), val);
4757}
4758
4759static int niu_init_hostinfo(struct niu *np)
4760{
4761 struct niu_parent *parent = np->parent;
4762 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4763 int i, err, num_alt = niu_num_alt_addr(np);
4764 int first_rdc_table = tp->first_table_num;
4765
4766 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4767 if (err)
4768 return err;
4769
4770 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4771 if (err)
4772 return err;
4773
4774 for (i = 0; i < num_alt; i++) {
4775 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4776 if (err)
4777 return err;
4778 }
4779
4780 return 0;
4781}
4782
4783static int niu_rx_channel_reset(struct niu *np, int channel)
4784{
4785 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4786 RXDMA_CFIG1_RST, 1000, 10,
4787 "RXDMA_CFIG1");
4788}
4789
4790static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4791{
4792 u64 val;
4793
4794 nw64(RX_LOG_MASK1(channel), 0);
4795 nw64(RX_LOG_VAL1(channel), 0);
4796 nw64(RX_LOG_MASK2(channel), 0);
4797 nw64(RX_LOG_VAL2(channel), 0);
4798 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4799 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4800 nw64(RX_LOG_PAGE_HDL(channel), 0);
4801
4802 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4803 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4804 nw64(RX_LOG_PAGE_VLD(channel), val);
4805
4806 return 0;
4807}
4808
4809static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4810{
4811 u64 val;
4812
4813 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4814 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4815 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4816 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4817 nw64(RDC_RED_PARA(rp->rx_channel), val);
4818}
4819
4820static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4821{
4822 u64 val = 0;
4823
4824 *ret = 0;
4825 switch (rp->rbr_block_size) {
4826 case 4 * 1024:
4827 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4828 break;
4829 case 8 * 1024:
4830 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4831 break;
4832 case 16 * 1024:
4833 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4834 break;
4835 case 32 * 1024:
4836 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4837 break;
4838 default:
4839 return -EINVAL;
4840 }
4841 val |= RBR_CFIG_B_VLD2;
4842 switch (rp->rbr_sizes[2]) {
4843 case 2 * 1024:
4844 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4845 break;
4846 case 4 * 1024:
4847 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4848 break;
4849 case 8 * 1024:
4850 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4851 break;
4852 case 16 * 1024:
4853 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4854 break;
4855
4856 default:
4857 return -EINVAL;
4858 }
4859 val |= RBR_CFIG_B_VLD1;
4860 switch (rp->rbr_sizes[1]) {
4861 case 1 * 1024:
4862 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4863 break;
4864 case 2 * 1024:
4865 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4866 break;
4867 case 4 * 1024:
4868 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4869 break;
4870 case 8 * 1024:
4871 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4872 break;
4873
4874 default:
4875 return -EINVAL;
4876 }
4877 val |= RBR_CFIG_B_VLD0;
4878 switch (rp->rbr_sizes[0]) {
4879 case 256:
4880 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4881 break;
4882 case 512:
4883 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4884 break;
4885 case 1 * 1024:
4886 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4887 break;
4888 case 2 * 1024:
4889 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4890 break;
4891
4892 default:
4893 return -EINVAL;
4894 }
4895
4896 *ret = val;
4897 return 0;
4898}
4899
4900static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4901{
4902 u64 val = nr64(RXDMA_CFIG1(channel));
4903 int limit;
4904
4905 if (on)
4906 val |= RXDMA_CFIG1_EN;
4907 else
4908 val &= ~RXDMA_CFIG1_EN;
4909 nw64(RXDMA_CFIG1(channel), val);
4910
4911 limit = 1000;
4912 while (--limit > 0) {
4913 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4914 break;
4915 udelay(10);
4916 }
4917 if (limit <= 0)
4918 return -ENODEV;
4919 return 0;
4920}
4921
4922static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4923{
4924 int err, channel = rp->rx_channel;
4925 u64 val;
4926
4927 err = niu_rx_channel_reset(np, channel);
4928 if (err)
4929 return err;
4930
4931 err = niu_rx_channel_lpage_init(np, channel);
4932 if (err)
4933 return err;
4934
4935 niu_rx_channel_wred_init(np, rp);
4936
4937 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4938 nw64(RX_DMA_CTL_STAT(channel),
4939 (RX_DMA_CTL_STAT_MEX |
4940 RX_DMA_CTL_STAT_RCRTHRES |
4941 RX_DMA_CTL_STAT_RCRTO |
4942 RX_DMA_CTL_STAT_RBR_EMPTY));
4943 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4944 nw64(RXDMA_CFIG2(channel),
4945 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4946 RXDMA_CFIG2_FULL_HDR));
4947 nw64(RBR_CFIG_A(channel),
4948 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4949 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4950 err = niu_compute_rbr_cfig_b(rp, &val);
4951 if (err)
4952 return err;
4953 nw64(RBR_CFIG_B(channel), val);
4954 nw64(RCRCFIG_A(channel),
4955 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4956 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4957 nw64(RCRCFIG_B(channel),
4958 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4959 RCRCFIG_B_ENTOUT |
4960 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4961
4962 err = niu_enable_rx_channel(np, channel, 1);
4963 if (err)
4964 return err;
4965
4966 nw64(RBR_KICK(channel), rp->rbr_index);
4967
4968 val = nr64(RX_DMA_CTL_STAT(channel));
4969 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4970 nw64(RX_DMA_CTL_STAT(channel), val);
4971
4972 return 0;
4973}
4974
4975static int niu_init_rx_channels(struct niu *np)
4976{
4977 unsigned long flags;
4978 u64 seed = jiffies_64;
4979 int err, i;
4980
4981 niu_lock_parent(np, flags);
4982 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4983 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4984 niu_unlock_parent(np, flags);
4985
4986 /* XXX RXDMA 32bit mode? XXX */
4987
4988 niu_init_rdc_groups(np);
4989 niu_init_drr_weight(np);
4990
4991 err = niu_init_hostinfo(np);
4992 if (err)
4993 return err;
4994
4995 for (i = 0; i < np->num_rx_rings; i++) {
4996 struct rx_ring_info *rp = &np->rx_rings[i];
4997
4998 err = niu_init_one_rx_channel(np, rp);
4999 if (err)
5000 return err;
5001 }
5002
5003 return 0;
5004}
5005
5006static int niu_set_ip_frag_rule(struct niu *np)
5007{
5008 struct niu_parent *parent = np->parent;
5009 struct niu_classifier *cp = &np->clas;
5010 struct niu_tcam_entry *tp;
5011 int index, err;
5012
5013 index = cp->tcam_top;
5014 tp = &parent->tcam[index];
5015
5016 /* Note that the noport bit is the same in both ipv4 and
5017 * ipv6 format TCAM entries.
5018 */
5019 memset(tp, 0, sizeof(*tp));
5020 tp->key[1] = TCAM_V4KEY1_NOPORT;
5021 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5022 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5023 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5024 err = tcam_write(np, index, tp->key, tp->key_mask);
5025 if (err)
5026 return err;
5027 err = tcam_assoc_write(np, index, tp->assoc_data);
5028 if (err)
5029 return err;
5030 tp->valid = 1;
5031 cp->tcam_valid_entries++;
5032
5033 return 0;
5034}
5035
5036static int niu_init_classifier_hw(struct niu *np)
5037{
5038 struct niu_parent *parent = np->parent;
5039 struct niu_classifier *cp = &np->clas;
5040 int i, err;
5041
5042 nw64(H1POLY, cp->h1_init);
5043 nw64(H2POLY, cp->h2_init);
5044
5045 err = niu_init_hostinfo(np);
5046 if (err)
5047 return err;
5048
5049 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5050 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5051
5052 vlan_tbl_write(np, i, np->port,
5053 vp->vlan_pref, vp->rdc_num);
5054 }
5055
5056 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5057 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5058
5059 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5060 ap->rdc_num, ap->mac_pref);
5061 if (err)
5062 return err;
5063 }
5064
5065 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5066 int index = i - CLASS_CODE_USER_PROG1;
5067
5068 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5069 if (err)
5070 return err;
5071 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5072 if (err)
5073 return err;
5074 }
5075
5076 err = niu_set_ip_frag_rule(np);
5077 if (err)
5078 return err;
5079
5080 tcam_enable(np, 1);
5081
5082 return 0;
5083}
5084
5085static int niu_zcp_write(struct niu *np, int index, u64 *data)
5086{
5087 nw64(ZCP_RAM_DATA0, data[0]);
5088 nw64(ZCP_RAM_DATA1, data[1]);
5089 nw64(ZCP_RAM_DATA2, data[2]);
5090 nw64(ZCP_RAM_DATA3, data[3]);
5091 nw64(ZCP_RAM_DATA4, data[4]);
5092 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5093 nw64(ZCP_RAM_ACC,
5094 (ZCP_RAM_ACC_WRITE |
5095 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5096 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5097
5098 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5099 1000, 100);
5100}
5101
5102static int niu_zcp_read(struct niu *np, int index, u64 *data)
5103{
5104 int err;
5105
5106 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5107 1000, 100);
5108 if (err) {
5109 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5110 (unsigned long long)nr64(ZCP_RAM_ACC));
5111 return err;
5112 }
5113
5114 nw64(ZCP_RAM_ACC,
5115 (ZCP_RAM_ACC_READ |
5116 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5117 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5118
5119 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5120 1000, 100);
5121 if (err) {
5122 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5123 (unsigned long long)nr64(ZCP_RAM_ACC));
5124 return err;
5125 }
5126
5127 data[0] = nr64(ZCP_RAM_DATA0);
5128 data[1] = nr64(ZCP_RAM_DATA1);
5129 data[2] = nr64(ZCP_RAM_DATA2);
5130 data[3] = nr64(ZCP_RAM_DATA3);
5131 data[4] = nr64(ZCP_RAM_DATA4);
5132
5133 return 0;
5134}
5135
5136static void niu_zcp_cfifo_reset(struct niu *np)
5137{
5138 u64 val = nr64(RESET_CFIFO);
5139
5140 val |= RESET_CFIFO_RST(np->port);
5141 nw64(RESET_CFIFO, val);
5142 udelay(10);
5143
5144 val &= ~RESET_CFIFO_RST(np->port);
5145 nw64(RESET_CFIFO, val);
5146}
5147
5148static int niu_init_zcp(struct niu *np)
5149{
5150 u64 data[5], rbuf[5];
5151 int i, max, err;
5152
5153 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5154 if (np->port == 0 || np->port == 1)
5155 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5156 else
5157 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5158 } else
5159 max = NIU_CFIFO_ENTRIES;
5160
5161 data[0] = 0;
5162 data[1] = 0;
5163 data[2] = 0;
5164 data[3] = 0;
5165 data[4] = 0;
5166
5167 for (i = 0; i < max; i++) {
5168 err = niu_zcp_write(np, i, data);
5169 if (err)
5170 return err;
5171 err = niu_zcp_read(np, i, rbuf);
5172 if (err)
5173 return err;
5174 }
5175
5176 niu_zcp_cfifo_reset(np);
5177 nw64(CFIFO_ECC(np->port), 0);
5178 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5179 (void) nr64(ZCP_INT_STAT);
5180 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5181
5182 return 0;
5183}
5184
5185static void niu_ipp_write(struct niu *np, int index, u64 *data)
5186{
5187 u64 val = nr64_ipp(IPP_CFIG);
5188
5189 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5190 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5191 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5192 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5193 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5194 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5195 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5196 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5197}
5198
5199static void niu_ipp_read(struct niu *np, int index, u64 *data)
5200{
5201 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5202 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5203 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5204 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5205 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5206 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5207}
5208
5209static int niu_ipp_reset(struct niu *np)
5210{
5211 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5212 1000, 100, "IPP_CFIG");
5213}
5214
5215static int niu_init_ipp(struct niu *np)
5216{
5217 u64 data[5], rbuf[5], val;
5218 int i, max, err;
5219
5220 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5221 if (np->port == 0 || np->port == 1)
5222 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5223 else
5224 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5225 } else
5226 max = NIU_DFIFO_ENTRIES;
5227
5228 data[0] = 0;
5229 data[1] = 0;
5230 data[2] = 0;
5231 data[3] = 0;
5232 data[4] = 0;
5233
5234 for (i = 0; i < max; i++) {
5235 niu_ipp_write(np, i, data);
5236 niu_ipp_read(np, i, rbuf);
5237 }
5238
5239 (void) nr64_ipp(IPP_INT_STAT);
5240 (void) nr64_ipp(IPP_INT_STAT);
5241
5242 err = niu_ipp_reset(np);
5243 if (err)
5244 return err;
5245
5246 (void) nr64_ipp(IPP_PKT_DIS);
5247 (void) nr64_ipp(IPP_BAD_CS_CNT);
5248 (void) nr64_ipp(IPP_ECC);
5249
5250 (void) nr64_ipp(IPP_INT_STAT);
5251
5252 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5253
5254 val = nr64_ipp(IPP_CFIG);
5255 val &= ~IPP_CFIG_IP_MAX_PKT;
5256 val |= (IPP_CFIG_IPP_ENABLE |
5257 IPP_CFIG_DFIFO_ECC_EN |
5258 IPP_CFIG_DROP_BAD_CRC |
5259 IPP_CFIG_CKSUM_EN |
5260 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5261 nw64_ipp(IPP_CFIG, val);
5262
5263 return 0;
5264}
5265
5266static void niu_handle_led(struct niu *np, int status)
5267{
5268 u64 val;
5269 val = nr64_mac(XMAC_CONFIG);
5270
5271 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5272 (np->flags & NIU_FLAGS_FIBER) != 0) {
5273 if (status) {
5274 val |= XMAC_CONFIG_LED_POLARITY;
5275 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5276 } else {
5277 val |= XMAC_CONFIG_FORCE_LED_ON;
5278 val &= ~XMAC_CONFIG_LED_POLARITY;
5279 }
5280 }
5281
5282 nw64_mac(XMAC_CONFIG, val);
5283}
5284
5285static void niu_init_xif_xmac(struct niu *np)
5286{
5287 struct niu_link_config *lp = &np->link_config;
5288 u64 val;
5289
5290 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5291 val = nr64(MIF_CONFIG);
5292 val |= MIF_CONFIG_ATCA_GE;
5293 nw64(MIF_CONFIG, val);
5294 }
5295
5296 val = nr64_mac(XMAC_CONFIG);
5297 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5298
5299 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5300
5301 if (lp->loopback_mode == LOOPBACK_MAC) {
5302 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5303 val |= XMAC_CONFIG_LOOPBACK;
5304 } else {
5305 val &= ~XMAC_CONFIG_LOOPBACK;
5306 }
5307
5308 if (np->flags & NIU_FLAGS_10G) {
5309 val &= ~XMAC_CONFIG_LFS_DISABLE;
5310 } else {
5311 val |= XMAC_CONFIG_LFS_DISABLE;
5312 if (!(np->flags & NIU_FLAGS_FIBER) &&
5313 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5314 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5315 else
5316 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5317 }
5318
5319 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5320
5321 if (lp->active_speed == SPEED_100)
5322 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5323 else
5324 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5325
5326 nw64_mac(XMAC_CONFIG, val);
5327
5328 val = nr64_mac(XMAC_CONFIG);
5329 val &= ~XMAC_CONFIG_MODE_MASK;
5330 if (np->flags & NIU_FLAGS_10G) {
5331 val |= XMAC_CONFIG_MODE_XGMII;
5332 } else {
5333 if (lp->active_speed == SPEED_1000)
5334 val |= XMAC_CONFIG_MODE_GMII;
5335 else
5336 val |= XMAC_CONFIG_MODE_MII;
5337 }
5338
5339 nw64_mac(XMAC_CONFIG, val);
5340}
5341
5342static void niu_init_xif_bmac(struct niu *np)
5343{
5344 struct niu_link_config *lp = &np->link_config;
5345 u64 val;
5346
5347 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5348
5349 if (lp->loopback_mode == LOOPBACK_MAC)
5350 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5351 else
5352 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5353
5354 if (lp->active_speed == SPEED_1000)
5355 val |= BMAC_XIF_CONFIG_GMII_MODE;
5356 else
5357 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5358
5359 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5360 BMAC_XIF_CONFIG_LED_POLARITY);
5361
5362 if (!(np->flags & NIU_FLAGS_10G) &&
5363 !(np->flags & NIU_FLAGS_FIBER) &&
5364 lp->active_speed == SPEED_100)
5365 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5366 else
5367 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5368
5369 nw64_mac(BMAC_XIF_CONFIG, val);
5370}
5371
5372static void niu_init_xif(struct niu *np)
5373{
5374 if (np->flags & NIU_FLAGS_XMAC)
5375 niu_init_xif_xmac(np);
5376 else
5377 niu_init_xif_bmac(np);
5378}
5379
5380static void niu_pcs_mii_reset(struct niu *np)
5381{
5382 int limit = 1000;
5383 u64 val = nr64_pcs(PCS_MII_CTL);
5384 val |= PCS_MII_CTL_RST;
5385 nw64_pcs(PCS_MII_CTL, val);
5386 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5387 udelay(100);
5388 val = nr64_pcs(PCS_MII_CTL);
5389 }
5390}
5391
5392static void niu_xpcs_reset(struct niu *np)
5393{
5394 int limit = 1000;
5395 u64 val = nr64_xpcs(XPCS_CONTROL1);
5396 val |= XPCS_CONTROL1_RESET;
5397 nw64_xpcs(XPCS_CONTROL1, val);
5398 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5399 udelay(100);
5400 val = nr64_xpcs(XPCS_CONTROL1);
5401 }
5402}
5403
5404static int niu_init_pcs(struct niu *np)
5405{
5406 struct niu_link_config *lp = &np->link_config;
5407 u64 val;
5408
5409 switch (np->flags & (NIU_FLAGS_10G |
5410 NIU_FLAGS_FIBER |
5411 NIU_FLAGS_XCVR_SERDES)) {
5412 case NIU_FLAGS_FIBER:
5413 /* 1G fiber */
5414 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5415 nw64_pcs(PCS_DPATH_MODE, 0);
5416 niu_pcs_mii_reset(np);
5417 break;
5418
5419 case NIU_FLAGS_10G:
5420 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5421 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5422 /* 10G SERDES */
5423 if (!(np->flags & NIU_FLAGS_XMAC))
5424 return -EINVAL;
5425
5426 /* 10G copper or fiber */
5427 val = nr64_mac(XMAC_CONFIG);
5428 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5429 nw64_mac(XMAC_CONFIG, val);
5430
5431 niu_xpcs_reset(np);
5432
5433 val = nr64_xpcs(XPCS_CONTROL1);
5434 if (lp->loopback_mode == LOOPBACK_PHY)
5435 val |= XPCS_CONTROL1_LOOPBACK;
5436 else
5437 val &= ~XPCS_CONTROL1_LOOPBACK;
5438 nw64_xpcs(XPCS_CONTROL1, val);
5439
5440 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5441 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5442 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5443 break;
5444
5445
5446 case NIU_FLAGS_XCVR_SERDES:
5447 /* 1G SERDES */
5448 niu_pcs_mii_reset(np);
5449 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5450 nw64_pcs(PCS_DPATH_MODE, 0);
5451 break;
5452
5453 case 0:
5454 /* 1G copper */
5455 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5456 /* 1G RGMII FIBER */
5457 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5458 niu_pcs_mii_reset(np);
5459 break;
5460
5461 default:
5462 return -EINVAL;
5463 }
5464
5465 return 0;
5466}
5467
5468static int niu_reset_tx_xmac(struct niu *np)
5469{
5470 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5471 (XTXMAC_SW_RST_REG_RS |
5472 XTXMAC_SW_RST_SOFT_RST),
5473 1000, 100, "XTXMAC_SW_RST");
5474}
5475
5476static int niu_reset_tx_bmac(struct niu *np)
5477{
5478 int limit;
5479
5480 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5481 limit = 1000;
5482 while (--limit >= 0) {
5483 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5484 break;
5485 udelay(100);
5486 }
5487 if (limit < 0) {
5488 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5489 np->port,
5490 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5491 return -ENODEV;
5492 }
5493
5494 return 0;
5495}
5496
5497static int niu_reset_tx_mac(struct niu *np)
5498{
5499 if (np->flags & NIU_FLAGS_XMAC)
5500 return niu_reset_tx_xmac(np);
5501 else
5502 return niu_reset_tx_bmac(np);
5503}
5504
5505static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5506{
5507 u64 val;
5508
5509 val = nr64_mac(XMAC_MIN);
5510 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5511 XMAC_MIN_RX_MIN_PKT_SIZE);
5512 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5513 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5514 nw64_mac(XMAC_MIN, val);
5515
5516 nw64_mac(XMAC_MAX, max);
5517
5518 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5519
5520 val = nr64_mac(XMAC_IPG);
5521 if (np->flags & NIU_FLAGS_10G) {
5522 val &= ~XMAC_IPG_IPG_XGMII;
5523 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5524 } else {
5525 val &= ~XMAC_IPG_IPG_MII_GMII;
5526 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5527 }
5528 nw64_mac(XMAC_IPG, val);
5529
5530 val = nr64_mac(XMAC_CONFIG);
5531 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5532 XMAC_CONFIG_STRETCH_MODE |
5533 XMAC_CONFIG_VAR_MIN_IPG_EN |
5534 XMAC_CONFIG_TX_ENABLE);
5535 nw64_mac(XMAC_CONFIG, val);
5536
5537 nw64_mac(TXMAC_FRM_CNT, 0);
5538 nw64_mac(TXMAC_BYTE_CNT, 0);
5539}
5540
5541static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5542{
5543 u64 val;
5544
5545 nw64_mac(BMAC_MIN_FRAME, min);
5546 nw64_mac(BMAC_MAX_FRAME, max);
5547
5548 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5549 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5550 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5551
5552 val = nr64_mac(BTXMAC_CONFIG);
5553 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5554 BTXMAC_CONFIG_ENABLE);
5555 nw64_mac(BTXMAC_CONFIG, val);
5556}
5557
5558static void niu_init_tx_mac(struct niu *np)
5559{
5560 u64 min, max;
5561
5562 min = 64;
5563 if (np->dev->mtu > ETH_DATA_LEN)
5564 max = 9216;
5565 else
5566 max = 1522;
5567
5568 /* The XMAC_MIN register only accepts values for TX min which
5569 * have the low 3 bits cleared.
5570 */
5571 BUG_ON(min & 0x7);
5572
5573 if (np->flags & NIU_FLAGS_XMAC)
5574 niu_init_tx_xmac(np, min, max);
5575 else
5576 niu_init_tx_bmac(np, min, max);
5577}
5578
5579static int niu_reset_rx_xmac(struct niu *np)
5580{
5581 int limit;
5582
5583 nw64_mac(XRXMAC_SW_RST,
5584 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5585 limit = 1000;
5586 while (--limit >= 0) {
5587 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5588 XRXMAC_SW_RST_SOFT_RST)))
5589 break;
5590 udelay(100);
5591 }
5592 if (limit < 0) {
5593 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5594 np->port,
5595 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5596 return -ENODEV;
5597 }
5598
5599 return 0;
5600}
5601
5602static int niu_reset_rx_bmac(struct niu *np)
5603{
5604 int limit;
5605
5606 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5607 limit = 1000;
5608 while (--limit >= 0) {
5609 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5610 break;
5611 udelay(100);
5612 }
5613 if (limit < 0) {
5614 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5615 np->port,
5616 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5617 return -ENODEV;
5618 }
5619
5620 return 0;
5621}
5622
5623static int niu_reset_rx_mac(struct niu *np)
5624{
5625 if (np->flags & NIU_FLAGS_XMAC)
5626 return niu_reset_rx_xmac(np);
5627 else
5628 return niu_reset_rx_bmac(np);
5629}
5630
5631static void niu_init_rx_xmac(struct niu *np)
5632{
5633 struct niu_parent *parent = np->parent;
5634 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5635 int first_rdc_table = tp->first_table_num;
5636 unsigned long i;
5637 u64 val;
5638
5639 nw64_mac(XMAC_ADD_FILT0, 0);
5640 nw64_mac(XMAC_ADD_FILT1, 0);
5641 nw64_mac(XMAC_ADD_FILT2, 0);
5642 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5643 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5644 for (i = 0; i < MAC_NUM_HASH; i++)
5645 nw64_mac(XMAC_HASH_TBL(i), 0);
5646 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5647 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5648 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5649
5650 val = nr64_mac(XMAC_CONFIG);
5651 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5652 XMAC_CONFIG_PROMISCUOUS |
5653 XMAC_CONFIG_PROMISC_GROUP |
5654 XMAC_CONFIG_ERR_CHK_DIS |
5655 XMAC_CONFIG_RX_CRC_CHK_DIS |
5656 XMAC_CONFIG_RESERVED_MULTICAST |
5657 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5658 XMAC_CONFIG_ADDR_FILTER_EN |
5659 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5660 XMAC_CONFIG_STRIP_CRC |
5661 XMAC_CONFIG_PASS_FLOW_CTRL |
5662 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5663 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5664 nw64_mac(XMAC_CONFIG, val);
5665
5666 nw64_mac(RXMAC_BT_CNT, 0);
5667 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5668 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5669 nw64_mac(RXMAC_FRAG_CNT, 0);
5670 nw64_mac(RXMAC_HIST_CNT1, 0);
5671 nw64_mac(RXMAC_HIST_CNT2, 0);
5672 nw64_mac(RXMAC_HIST_CNT3, 0);
5673 nw64_mac(RXMAC_HIST_CNT4, 0);
5674 nw64_mac(RXMAC_HIST_CNT5, 0);
5675 nw64_mac(RXMAC_HIST_CNT6, 0);
5676 nw64_mac(RXMAC_HIST_CNT7, 0);
5677 nw64_mac(RXMAC_MPSZER_CNT, 0);
5678 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5679 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5680 nw64_mac(LINK_FAULT_CNT, 0);
5681}
5682
5683static void niu_init_rx_bmac(struct niu *np)
5684{
5685 struct niu_parent *parent = np->parent;
5686 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5687 int first_rdc_table = tp->first_table_num;
5688 unsigned long i;
5689 u64 val;
5690
5691 nw64_mac(BMAC_ADD_FILT0, 0);
5692 nw64_mac(BMAC_ADD_FILT1, 0);
5693 nw64_mac(BMAC_ADD_FILT2, 0);
5694 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5695 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5696 for (i = 0; i < MAC_NUM_HASH; i++)
5697 nw64_mac(BMAC_HASH_TBL(i), 0);
5698 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5699 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5700 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5701
5702 val = nr64_mac(BRXMAC_CONFIG);
5703 val &= ~(BRXMAC_CONFIG_ENABLE |
5704 BRXMAC_CONFIG_STRIP_PAD |
5705 BRXMAC_CONFIG_STRIP_FCS |
5706 BRXMAC_CONFIG_PROMISC |
5707 BRXMAC_CONFIG_PROMISC_GRP |
5708 BRXMAC_CONFIG_ADDR_FILT_EN |
5709 BRXMAC_CONFIG_DISCARD_DIS);
5710 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5711 nw64_mac(BRXMAC_CONFIG, val);
5712
5713 val = nr64_mac(BMAC_ADDR_CMPEN);
5714 val |= BMAC_ADDR_CMPEN_EN0;
5715 nw64_mac(BMAC_ADDR_CMPEN, val);
5716}
5717
5718static void niu_init_rx_mac(struct niu *np)
5719{
5720 niu_set_primary_mac(np, np->dev->dev_addr);
5721
5722 if (np->flags & NIU_FLAGS_XMAC)
5723 niu_init_rx_xmac(np);
5724 else
5725 niu_init_rx_bmac(np);
5726}
5727
5728static void niu_enable_tx_xmac(struct niu *np, int on)
5729{
5730 u64 val = nr64_mac(XMAC_CONFIG);
5731
5732 if (on)
5733 val |= XMAC_CONFIG_TX_ENABLE;
5734 else
5735 val &= ~XMAC_CONFIG_TX_ENABLE;
5736 nw64_mac(XMAC_CONFIG, val);
5737}
5738
5739static void niu_enable_tx_bmac(struct niu *np, int on)
5740{
5741 u64 val = nr64_mac(BTXMAC_CONFIG);
5742
5743 if (on)
5744 val |= BTXMAC_CONFIG_ENABLE;
5745 else
5746 val &= ~BTXMAC_CONFIG_ENABLE;
5747 nw64_mac(BTXMAC_CONFIG, val);
5748}
5749
5750static void niu_enable_tx_mac(struct niu *np, int on)
5751{
5752 if (np->flags & NIU_FLAGS_XMAC)
5753 niu_enable_tx_xmac(np, on);
5754 else
5755 niu_enable_tx_bmac(np, on);
5756}
5757
5758static void niu_enable_rx_xmac(struct niu *np, int on)
5759{
5760 u64 val = nr64_mac(XMAC_CONFIG);
5761
5762 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5763 XMAC_CONFIG_PROMISCUOUS);
5764
5765 if (np->flags & NIU_FLAGS_MCAST)
5766 val |= XMAC_CONFIG_HASH_FILTER_EN;
5767 if (np->flags & NIU_FLAGS_PROMISC)
5768 val |= XMAC_CONFIG_PROMISCUOUS;
5769
5770 if (on)
5771 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5772 else
5773 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5774 nw64_mac(XMAC_CONFIG, val);
5775}
5776
5777static void niu_enable_rx_bmac(struct niu *np, int on)
5778{
5779 u64 val = nr64_mac(BRXMAC_CONFIG);
5780
5781 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5782 BRXMAC_CONFIG_PROMISC);
5783
5784 if (np->flags & NIU_FLAGS_MCAST)
5785 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5786 if (np->flags & NIU_FLAGS_PROMISC)
5787 val |= BRXMAC_CONFIG_PROMISC;
5788
5789 if (on)
5790 val |= BRXMAC_CONFIG_ENABLE;
5791 else
5792 val &= ~BRXMAC_CONFIG_ENABLE;
5793 nw64_mac(BRXMAC_CONFIG, val);
5794}
5795
5796static void niu_enable_rx_mac(struct niu *np, int on)
5797{
5798 if (np->flags & NIU_FLAGS_XMAC)
5799 niu_enable_rx_xmac(np, on);
5800 else
5801 niu_enable_rx_bmac(np, on);
5802}
5803
5804static int niu_init_mac(struct niu *np)
5805{
5806 int err;
5807
5808 niu_init_xif(np);
5809 err = niu_init_pcs(np);
5810 if (err)
5811 return err;
5812
5813 err = niu_reset_tx_mac(np);
5814 if (err)
5815 return err;
5816 niu_init_tx_mac(np);
5817 err = niu_reset_rx_mac(np);
5818 if (err)
5819 return err;
5820 niu_init_rx_mac(np);
5821
5822 /* This looks hookey but the RX MAC reset we just did will
5823 * undo some of the state we setup in niu_init_tx_mac() so we
5824 * have to call it again. In particular, the RX MAC reset will
5825 * set the XMAC_MAX register back to it's default value.
5826 */
5827 niu_init_tx_mac(np);
5828 niu_enable_tx_mac(np, 1);
5829
5830 niu_enable_rx_mac(np, 1);
5831
5832 return 0;
5833}
5834
5835static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5836{
5837 (void) niu_tx_channel_stop(np, rp->tx_channel);
5838}
5839
5840static void niu_stop_tx_channels(struct niu *np)
5841{
5842 int i;
5843
5844 for (i = 0; i < np->num_tx_rings; i++) {
5845 struct tx_ring_info *rp = &np->tx_rings[i];
5846
5847 niu_stop_one_tx_channel(np, rp);
5848 }
5849}
5850
5851static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5852{
5853 (void) niu_tx_channel_reset(np, rp->tx_channel);
5854}
5855
5856static void niu_reset_tx_channels(struct niu *np)
5857{
5858 int i;
5859
5860 for (i = 0; i < np->num_tx_rings; i++) {
5861 struct tx_ring_info *rp = &np->tx_rings[i];
5862
5863 niu_reset_one_tx_channel(np, rp);
5864 }
5865}
5866
5867static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5868{
5869 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5870}
5871
5872static void niu_stop_rx_channels(struct niu *np)
5873{
5874 int i;
5875
5876 for (i = 0; i < np->num_rx_rings; i++) {
5877 struct rx_ring_info *rp = &np->rx_rings[i];
5878
5879 niu_stop_one_rx_channel(np, rp);
5880 }
5881}
5882
5883static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5884{
5885 int channel = rp->rx_channel;
5886
5887 (void) niu_rx_channel_reset(np, channel);
5888 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5889 nw64(RX_DMA_CTL_STAT(channel), 0);
5890 (void) niu_enable_rx_channel(np, channel, 0);
5891}
5892
5893static void niu_reset_rx_channels(struct niu *np)
5894{
5895 int i;
5896
5897 for (i = 0; i < np->num_rx_rings; i++) {
5898 struct rx_ring_info *rp = &np->rx_rings[i];
5899
5900 niu_reset_one_rx_channel(np, rp);
5901 }
5902}
5903
5904static void niu_disable_ipp(struct niu *np)
5905{
5906 u64 rd, wr, val;
5907 int limit;
5908
5909 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5910 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5911 limit = 100;
5912 while (--limit >= 0 && (rd != wr)) {
5913 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5914 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5915 }
5916 if (limit < 0 &&
5917 (rd != 0 && wr != 1)) {
5918 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5919 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5920 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5921 }
5922
5923 val = nr64_ipp(IPP_CFIG);
5924 val &= ~(IPP_CFIG_IPP_ENABLE |
5925 IPP_CFIG_DFIFO_ECC_EN |
5926 IPP_CFIG_DROP_BAD_CRC |
5927 IPP_CFIG_CKSUM_EN);
5928 nw64_ipp(IPP_CFIG, val);
5929
5930 (void) niu_ipp_reset(np);
5931}
5932
5933static int niu_init_hw(struct niu *np)
5934{
5935 int i, err;
5936
5937 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5938 niu_txc_enable_port(np, 1);
5939 niu_txc_port_dma_enable(np, 1);
5940 niu_txc_set_imask(np, 0);
5941
5942 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5943 for (i = 0; i < np->num_tx_rings; i++) {
5944 struct tx_ring_info *rp = &np->tx_rings[i];
5945
5946 err = niu_init_one_tx_channel(np, rp);
5947 if (err)
5948 return err;
5949 }
5950
5951 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5952 err = niu_init_rx_channels(np);
5953 if (err)
5954 goto out_uninit_tx_channels;
5955
5956 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5957 err = niu_init_classifier_hw(np);
5958 if (err)
5959 goto out_uninit_rx_channels;
5960
5961 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5962 err = niu_init_zcp(np);
5963 if (err)
5964 goto out_uninit_rx_channels;
5965
5966 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5967 err = niu_init_ipp(np);
5968 if (err)
5969 goto out_uninit_rx_channels;
5970
5971 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5972 err = niu_init_mac(np);
5973 if (err)
5974 goto out_uninit_ipp;
5975
5976 return 0;
5977
5978out_uninit_ipp:
5979 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5980 niu_disable_ipp(np);
5981
5982out_uninit_rx_channels:
5983 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5984 niu_stop_rx_channels(np);
5985 niu_reset_rx_channels(np);
5986
5987out_uninit_tx_channels:
5988 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5989 niu_stop_tx_channels(np);
5990 niu_reset_tx_channels(np);
5991
5992 return err;
5993}
5994
5995static void niu_stop_hw(struct niu *np)
5996{
5997 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
5998 niu_enable_interrupts(np, 0);
5999
6000 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6001 niu_enable_rx_mac(np, 0);
6002
6003 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6004 niu_disable_ipp(np);
6005
6006 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6007 niu_stop_tx_channels(np);
6008
6009 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6010 niu_stop_rx_channels(np);
6011
6012 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6013 niu_reset_tx_channels(np);
6014
6015 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6016 niu_reset_rx_channels(np);
6017}
6018
6019static void niu_set_irq_name(struct niu *np)
6020{
6021 int port = np->port;
6022 int i, j = 1;
6023
6024 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6025
6026 if (port == 0) {
6027 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6028 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6029 j = 3;
6030 }
6031
6032 for (i = 0; i < np->num_ldg - j; i++) {
6033 if (i < np->num_rx_rings)
6034 sprintf(np->irq_name[i+j], "%s-rx-%d",
6035 np->dev->name, i);
6036 else if (i < np->num_tx_rings + np->num_rx_rings)
6037 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6038 i - np->num_rx_rings);
6039 }
6040}
6041
6042static int niu_request_irq(struct niu *np)
6043{
6044 int i, j, err;
6045
6046 niu_set_irq_name(np);
6047
6048 err = 0;
6049 for (i = 0; i < np->num_ldg; i++) {
6050 struct niu_ldg *lp = &np->ldg[i];
6051
6052 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6053 np->irq_name[i], lp);
6054 if (err)
6055 goto out_free_irqs;
6056
6057 }
6058
6059 return 0;
6060
6061out_free_irqs:
6062 for (j = 0; j < i; j++) {
6063 struct niu_ldg *lp = &np->ldg[j];
6064
6065 free_irq(lp->irq, lp);
6066 }
6067 return err;
6068}
6069
6070static void niu_free_irq(struct niu *np)
6071{
6072 int i;
6073
6074 for (i = 0; i < np->num_ldg; i++) {
6075 struct niu_ldg *lp = &np->ldg[i];
6076
6077 free_irq(lp->irq, lp);
6078 }
6079}
6080
6081static void niu_enable_napi(struct niu *np)
6082{
6083 int i;
6084
6085 for (i = 0; i < np->num_ldg; i++)
6086 napi_enable(&np->ldg[i].napi);
6087}
6088
6089static void niu_disable_napi(struct niu *np)
6090{
6091 int i;
6092
6093 for (i = 0; i < np->num_ldg; i++)
6094 napi_disable(&np->ldg[i].napi);
6095}
6096
6097static int niu_open(struct net_device *dev)
6098{
6099 struct niu *np = netdev_priv(dev);
6100 int err;
6101
6102 netif_carrier_off(dev);
6103
6104 err = niu_alloc_channels(np);
6105 if (err)
6106 goto out_err;
6107
6108 err = niu_enable_interrupts(np, 0);
6109 if (err)
6110 goto out_free_channels;
6111
6112 err = niu_request_irq(np);
6113 if (err)
6114 goto out_free_channels;
6115
6116 niu_enable_napi(np);
6117
6118 spin_lock_irq(&np->lock);
6119
6120 err = niu_init_hw(np);
6121 if (!err) {
6122 init_timer(&np->timer);
6123 np->timer.expires = jiffies + HZ;
6124 np->timer.data = (unsigned long) np;
6125 np->timer.function = niu_timer;
6126
6127 err = niu_enable_interrupts(np, 1);
6128 if (err)
6129 niu_stop_hw(np);
6130 }
6131
6132 spin_unlock_irq(&np->lock);
6133
6134 if (err) {
6135 niu_disable_napi(np);
6136 goto out_free_irq;
6137 }
6138
6139 netif_tx_start_all_queues(dev);
6140
6141 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6142 netif_carrier_on(dev);
6143
6144 add_timer(&np->timer);
6145
6146 return 0;
6147
6148out_free_irq:
6149 niu_free_irq(np);
6150
6151out_free_channels:
6152 niu_free_channels(np);
6153
6154out_err:
6155 return err;
6156}
6157
6158static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6159{
6160 cancel_work_sync(&np->reset_task);
6161
6162 niu_disable_napi(np);
6163 netif_tx_stop_all_queues(dev);
6164
6165 del_timer_sync(&np->timer);
6166
6167 spin_lock_irq(&np->lock);
6168
6169 niu_stop_hw(np);
6170
6171 spin_unlock_irq(&np->lock);
6172}
6173
6174static int niu_close(struct net_device *dev)
6175{
6176 struct niu *np = netdev_priv(dev);
6177
6178 niu_full_shutdown(np, dev);
6179
6180 niu_free_irq(np);
6181
6182 niu_free_channels(np);
6183
6184 niu_handle_led(np, 0);
6185
6186 return 0;
6187}
6188
6189static void niu_sync_xmac_stats(struct niu *np)
6190{
6191 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6192
6193 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6194 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6195
6196 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6197 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6198 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6199 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6200 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6201 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6202 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6203 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6204 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6205 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6206 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6207 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6208 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6209 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6210 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6211 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6212}
6213
6214static void niu_sync_bmac_stats(struct niu *np)
6215{
6216 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6217
6218 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6219 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6220
6221 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6222 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6223 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6224 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6225}
6226
6227static void niu_sync_mac_stats(struct niu *np)
6228{
6229 if (np->flags & NIU_FLAGS_XMAC)
6230 niu_sync_xmac_stats(np);
6231 else
6232 niu_sync_bmac_stats(np);
6233}
6234
6235static void niu_get_rx_stats(struct niu *np,
6236 struct rtnl_link_stats64 *stats)
6237{
6238 u64 pkts, dropped, errors, bytes;
6239 struct rx_ring_info *rx_rings;
6240 int i;
6241
6242 pkts = dropped = errors = bytes = 0;
6243
6244 rx_rings = ACCESS_ONCE(np->rx_rings);
6245 if (!rx_rings)
6246 goto no_rings;
6247
6248 for (i = 0; i < np->num_rx_rings; i++) {
6249 struct rx_ring_info *rp = &rx_rings[i];
6250
6251 niu_sync_rx_discard_stats(np, rp, 0);
6252
6253 pkts += rp->rx_packets;
6254 bytes += rp->rx_bytes;
6255 dropped += rp->rx_dropped;
6256 errors += rp->rx_errors;
6257 }
6258
6259no_rings:
6260 stats->rx_packets = pkts;
6261 stats->rx_bytes = bytes;
6262 stats->rx_dropped = dropped;
6263 stats->rx_errors = errors;
6264}
6265
6266static void niu_get_tx_stats(struct niu *np,
6267 struct rtnl_link_stats64 *stats)
6268{
6269 u64 pkts, errors, bytes;
6270 struct tx_ring_info *tx_rings;
6271 int i;
6272
6273 pkts = errors = bytes = 0;
6274
6275 tx_rings = ACCESS_ONCE(np->tx_rings);
6276 if (!tx_rings)
6277 goto no_rings;
6278
6279 for (i = 0; i < np->num_tx_rings; i++) {
6280 struct tx_ring_info *rp = &tx_rings[i];
6281
6282 pkts += rp->tx_packets;
6283 bytes += rp->tx_bytes;
6284 errors += rp->tx_errors;
6285 }
6286
6287no_rings:
6288 stats->tx_packets = pkts;
6289 stats->tx_bytes = bytes;
6290 stats->tx_errors = errors;
6291}
6292
6293static struct rtnl_link_stats64 *niu_get_stats(struct net_device *dev,
6294 struct rtnl_link_stats64 *stats)
6295{
6296 struct niu *np = netdev_priv(dev);
6297
6298 if (netif_running(dev)) {
6299 niu_get_rx_stats(np, stats);
6300 niu_get_tx_stats(np, stats);
6301 }
6302
6303 return stats;
6304}
6305
6306static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6307{
6308 int i;
6309
6310 for (i = 0; i < 16; i++)
6311 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6312}
6313
6314static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6315{
6316 int i;
6317
6318 for (i = 0; i < 16; i++)
6319 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6320}
6321
6322static void niu_load_hash(struct niu *np, u16 *hash)
6323{
6324 if (np->flags & NIU_FLAGS_XMAC)
6325 niu_load_hash_xmac(np, hash);
6326 else
6327 niu_load_hash_bmac(np, hash);
6328}
6329
6330static void niu_set_rx_mode(struct net_device *dev)
6331{
6332 struct niu *np = netdev_priv(dev);
6333 int i, alt_cnt, err;
6334 struct netdev_hw_addr *ha;
6335 unsigned long flags;
6336 u16 hash[16] = { 0, };
6337
6338 spin_lock_irqsave(&np->lock, flags);
6339 niu_enable_rx_mac(np, 0);
6340
6341 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6342 if (dev->flags & IFF_PROMISC)
6343 np->flags |= NIU_FLAGS_PROMISC;
6344 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6345 np->flags |= NIU_FLAGS_MCAST;
6346
6347 alt_cnt = netdev_uc_count(dev);
6348 if (alt_cnt > niu_num_alt_addr(np)) {
6349 alt_cnt = 0;
6350 np->flags |= NIU_FLAGS_PROMISC;
6351 }
6352
6353 if (alt_cnt) {
6354 int index = 0;
6355
6356 netdev_for_each_uc_addr(ha, dev) {
6357 err = niu_set_alt_mac(np, index, ha->addr);
6358 if (err)
6359 netdev_warn(dev, "Error %d adding alt mac %d\n",
6360 err, index);
6361 err = niu_enable_alt_mac(np, index, 1);
6362 if (err)
6363 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6364 err, index);
6365
6366 index++;
6367 }
6368 } else {
6369 int alt_start;
6370 if (np->flags & NIU_FLAGS_XMAC)
6371 alt_start = 0;
6372 else
6373 alt_start = 1;
6374 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6375 err = niu_enable_alt_mac(np, i, 0);
6376 if (err)
6377 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6378 err, i);
6379 }
6380 }
6381 if (dev->flags & IFF_ALLMULTI) {
6382 for (i = 0; i < 16; i++)
6383 hash[i] = 0xffff;
6384 } else if (!netdev_mc_empty(dev)) {
6385 netdev_for_each_mc_addr(ha, dev) {
6386 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6387
6388 crc >>= 24;
6389 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6390 }
6391 }
6392
6393 if (np->flags & NIU_FLAGS_MCAST)
6394 niu_load_hash(np, hash);
6395
6396 niu_enable_rx_mac(np, 1);
6397 spin_unlock_irqrestore(&np->lock, flags);
6398}
6399
6400static int niu_set_mac_addr(struct net_device *dev, void *p)
6401{
6402 struct niu *np = netdev_priv(dev);
6403 struct sockaddr *addr = p;
6404 unsigned long flags;
6405
6406 if (!is_valid_ether_addr(addr->sa_data))
6407 return -EADDRNOTAVAIL;
6408
6409 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6410
6411 if (!netif_running(dev))
6412 return 0;
6413
6414 spin_lock_irqsave(&np->lock, flags);
6415 niu_enable_rx_mac(np, 0);
6416 niu_set_primary_mac(np, dev->dev_addr);
6417 niu_enable_rx_mac(np, 1);
6418 spin_unlock_irqrestore(&np->lock, flags);
6419
6420 return 0;
6421}
6422
6423static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6424{
6425 return -EOPNOTSUPP;
6426}
6427
6428static void niu_netif_stop(struct niu *np)
6429{
6430 np->dev->trans_start = jiffies; /* prevent tx timeout */
6431
6432 niu_disable_napi(np);
6433
6434 netif_tx_disable(np->dev);
6435}
6436
6437static void niu_netif_start(struct niu *np)
6438{
6439 /* NOTE: unconditional netif_wake_queue is only appropriate
6440 * so long as all callers are assured to have free tx slots
6441 * (such as after niu_init_hw).
6442 */
6443 netif_tx_wake_all_queues(np->dev);
6444
6445 niu_enable_napi(np);
6446
6447 niu_enable_interrupts(np, 1);
6448}
6449
6450static void niu_reset_buffers(struct niu *np)
6451{
6452 int i, j, k, err;
6453
6454 if (np->rx_rings) {
6455 for (i = 0; i < np->num_rx_rings; i++) {
6456 struct rx_ring_info *rp = &np->rx_rings[i];
6457
6458 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6459 struct page *page;
6460
6461 page = rp->rxhash[j];
6462 while (page) {
6463 struct page *next =
6464 (struct page *) page->mapping;
6465 u64 base = page->index;
6466 base = base >> RBR_DESCR_ADDR_SHIFT;
6467 rp->rbr[k++] = cpu_to_le32(base);
6468 page = next;
6469 }
6470 }
6471 for (; k < MAX_RBR_RING_SIZE; k++) {
6472 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6473 if (unlikely(err))
6474 break;
6475 }
6476
6477 rp->rbr_index = rp->rbr_table_size - 1;
6478 rp->rcr_index = 0;
6479 rp->rbr_pending = 0;
6480 rp->rbr_refill_pending = 0;
6481 }
6482 }
6483 if (np->tx_rings) {
6484 for (i = 0; i < np->num_tx_rings; i++) {
6485 struct tx_ring_info *rp = &np->tx_rings[i];
6486
6487 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6488 if (rp->tx_buffs[j].skb)
6489 (void) release_tx_packet(np, rp, j);
6490 }
6491
6492 rp->pending = MAX_TX_RING_SIZE;
6493 rp->prod = 0;
6494 rp->cons = 0;
6495 rp->wrap_bit = 0;
6496 }
6497 }
6498}
6499
6500static void niu_reset_task(struct work_struct *work)
6501{
6502 struct niu *np = container_of(work, struct niu, reset_task);
6503 unsigned long flags;
6504 int err;
6505
6506 spin_lock_irqsave(&np->lock, flags);
6507 if (!netif_running(np->dev)) {
6508 spin_unlock_irqrestore(&np->lock, flags);
6509 return;
6510 }
6511
6512 spin_unlock_irqrestore(&np->lock, flags);
6513
6514 del_timer_sync(&np->timer);
6515
6516 niu_netif_stop(np);
6517
6518 spin_lock_irqsave(&np->lock, flags);
6519
6520 niu_stop_hw(np);
6521
6522 spin_unlock_irqrestore(&np->lock, flags);
6523
6524 niu_reset_buffers(np);
6525
6526 spin_lock_irqsave(&np->lock, flags);
6527
6528 err = niu_init_hw(np);
6529 if (!err) {
6530 np->timer.expires = jiffies + HZ;
6531 add_timer(&np->timer);
6532 niu_netif_start(np);
6533 }
6534
6535 spin_unlock_irqrestore(&np->lock, flags);
6536}
6537
6538static void niu_tx_timeout(struct net_device *dev)
6539{
6540 struct niu *np = netdev_priv(dev);
6541
6542 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6543 dev->name);
6544
6545 schedule_work(&np->reset_task);
6546}
6547
6548static void niu_set_txd(struct tx_ring_info *rp, int index,
6549 u64 mapping, u64 len, u64 mark,
6550 u64 n_frags)
6551{
6552 __le64 *desc = &rp->descr[index];
6553
6554 *desc = cpu_to_le64(mark |
6555 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6556 (len << TX_DESC_TR_LEN_SHIFT) |
6557 (mapping & TX_DESC_SAD));
6558}
6559
6560static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6561 u64 pad_bytes, u64 len)
6562{
6563 u16 eth_proto, eth_proto_inner;
6564 u64 csum_bits, l3off, ihl, ret;
6565 u8 ip_proto;
6566 int ipv6;
6567
6568 eth_proto = be16_to_cpu(ehdr->h_proto);
6569 eth_proto_inner = eth_proto;
6570 if (eth_proto == ETH_P_8021Q) {
6571 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6572 __be16 val = vp->h_vlan_encapsulated_proto;
6573
6574 eth_proto_inner = be16_to_cpu(val);
6575 }
6576
6577 ipv6 = ihl = 0;
6578 switch (skb->protocol) {
6579 case cpu_to_be16(ETH_P_IP):
6580 ip_proto = ip_hdr(skb)->protocol;
6581 ihl = ip_hdr(skb)->ihl;
6582 break;
6583 case cpu_to_be16(ETH_P_IPV6):
6584 ip_proto = ipv6_hdr(skb)->nexthdr;
6585 ihl = (40 >> 2);
6586 ipv6 = 1;
6587 break;
6588 default:
6589 ip_proto = ihl = 0;
6590 break;
6591 }
6592
6593 csum_bits = TXHDR_CSUM_NONE;
6594 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6595 u64 start, stuff;
6596
6597 csum_bits = (ip_proto == IPPROTO_TCP ?
6598 TXHDR_CSUM_TCP :
6599 (ip_proto == IPPROTO_UDP ?
6600 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6601
6602 start = skb_checksum_start_offset(skb) -
6603 (pad_bytes + sizeof(struct tx_pkt_hdr));
6604 stuff = start + skb->csum_offset;
6605
6606 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6607 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6608 }
6609
6610 l3off = skb_network_offset(skb) -
6611 (pad_bytes + sizeof(struct tx_pkt_hdr));
6612
6613 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6614 (len << TXHDR_LEN_SHIFT) |
6615 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6616 (ihl << TXHDR_IHL_SHIFT) |
6617 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6618 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6619 (ipv6 ? TXHDR_IP_VER : 0) |
6620 csum_bits);
6621
6622 return ret;
6623}
6624
6625static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6626 struct net_device *dev)
6627{
6628 struct niu *np = netdev_priv(dev);
6629 unsigned long align, headroom;
6630 struct netdev_queue *txq;
6631 struct tx_ring_info *rp;
6632 struct tx_pkt_hdr *tp;
6633 unsigned int len, nfg;
6634 struct ethhdr *ehdr;
6635 int prod, i, tlen;
6636 u64 mapping, mrk;
6637
6638 i = skb_get_queue_mapping(skb);
6639 rp = &np->tx_rings[i];
6640 txq = netdev_get_tx_queue(dev, i);
6641
6642 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6643 netif_tx_stop_queue(txq);
6644 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6645 rp->tx_errors++;
6646 return NETDEV_TX_BUSY;
6647 }
6648
6649 if (skb->len < ETH_ZLEN) {
6650 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6651
6652 if (skb_pad(skb, pad_bytes))
6653 goto out;
6654 skb_put(skb, pad_bytes);
6655 }
6656
6657 len = sizeof(struct tx_pkt_hdr) + 15;
6658 if (skb_headroom(skb) < len) {
6659 struct sk_buff *skb_new;
6660
6661 skb_new = skb_realloc_headroom(skb, len);
6662 if (!skb_new) {
6663 rp->tx_errors++;
6664 goto out_drop;
6665 }
6666 kfree_skb(skb);
6667 skb = skb_new;
6668 } else
6669 skb_orphan(skb);
6670
6671 align = ((unsigned long) skb->data & (16 - 1));
6672 headroom = align + sizeof(struct tx_pkt_hdr);
6673
6674 ehdr = (struct ethhdr *) skb->data;
6675 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6676
6677 len = skb->len - sizeof(struct tx_pkt_hdr);
6678 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6679 tp->resv = 0;
6680
6681 len = skb_headlen(skb);
6682 mapping = np->ops->map_single(np->device, skb->data,
6683 len, DMA_TO_DEVICE);
6684
6685 prod = rp->prod;
6686
6687 rp->tx_buffs[prod].skb = skb;
6688 rp->tx_buffs[prod].mapping = mapping;
6689
6690 mrk = TX_DESC_SOP;
6691 if (++rp->mark_counter == rp->mark_freq) {
6692 rp->mark_counter = 0;
6693 mrk |= TX_DESC_MARK;
6694 rp->mark_pending++;
6695 }
6696
6697 tlen = len;
6698 nfg = skb_shinfo(skb)->nr_frags;
6699 while (tlen > 0) {
6700 tlen -= MAX_TX_DESC_LEN;
6701 nfg++;
6702 }
6703
6704 while (len > 0) {
6705 unsigned int this_len = len;
6706
6707 if (this_len > MAX_TX_DESC_LEN)
6708 this_len = MAX_TX_DESC_LEN;
6709
6710 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6711 mrk = nfg = 0;
6712
6713 prod = NEXT_TX(rp, prod);
6714 mapping += this_len;
6715 len -= this_len;
6716 }
6717
6718 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6719 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6720
6721 len = skb_frag_size(frag);
6722 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6723 frag->page_offset, len,
6724 DMA_TO_DEVICE);
6725
6726 rp->tx_buffs[prod].skb = NULL;
6727 rp->tx_buffs[prod].mapping = mapping;
6728
6729 niu_set_txd(rp, prod, mapping, len, 0, 0);
6730
6731 prod = NEXT_TX(rp, prod);
6732 }
6733
6734 if (prod < rp->prod)
6735 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6736 rp->prod = prod;
6737
6738 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6739
6740 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6741 netif_tx_stop_queue(txq);
6742 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6743 netif_tx_wake_queue(txq);
6744 }
6745
6746out:
6747 return NETDEV_TX_OK;
6748
6749out_drop:
6750 rp->tx_errors++;
6751 kfree_skb(skb);
6752 goto out;
6753}
6754
6755static int niu_change_mtu(struct net_device *dev, int new_mtu)
6756{
6757 struct niu *np = netdev_priv(dev);
6758 int err, orig_jumbo, new_jumbo;
6759
6760 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6761 return -EINVAL;
6762
6763 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6764 new_jumbo = (new_mtu > ETH_DATA_LEN);
6765
6766 dev->mtu = new_mtu;
6767
6768 if (!netif_running(dev) ||
6769 (orig_jumbo == new_jumbo))
6770 return 0;
6771
6772 niu_full_shutdown(np, dev);
6773
6774 niu_free_channels(np);
6775
6776 niu_enable_napi(np);
6777
6778 err = niu_alloc_channels(np);
6779 if (err)
6780 return err;
6781
6782 spin_lock_irq(&np->lock);
6783
6784 err = niu_init_hw(np);
6785 if (!err) {
6786 init_timer(&np->timer);
6787 np->timer.expires = jiffies + HZ;
6788 np->timer.data = (unsigned long) np;
6789 np->timer.function = niu_timer;
6790
6791 err = niu_enable_interrupts(np, 1);
6792 if (err)
6793 niu_stop_hw(np);
6794 }
6795
6796 spin_unlock_irq(&np->lock);
6797
6798 if (!err) {
6799 netif_tx_start_all_queues(dev);
6800 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6801 netif_carrier_on(dev);
6802
6803 add_timer(&np->timer);
6804 }
6805
6806 return err;
6807}
6808
6809static void niu_get_drvinfo(struct net_device *dev,
6810 struct ethtool_drvinfo *info)
6811{
6812 struct niu *np = netdev_priv(dev);
6813 struct niu_vpd *vpd = &np->vpd;
6814
6815 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
6816 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
6817 snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6818 vpd->fcode_major, vpd->fcode_minor);
6819 if (np->parent->plat_type != PLAT_TYPE_NIU)
6820 strlcpy(info->bus_info, pci_name(np->pdev),
6821 sizeof(info->bus_info));
6822}
6823
6824static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6825{
6826 struct niu *np = netdev_priv(dev);
6827 struct niu_link_config *lp;
6828
6829 lp = &np->link_config;
6830
6831 memset(cmd, 0, sizeof(*cmd));
6832 cmd->phy_address = np->phy_addr;
6833 cmd->supported = lp->supported;
6834 cmd->advertising = lp->active_advertising;
6835 cmd->autoneg = lp->active_autoneg;
6836 ethtool_cmd_speed_set(cmd, lp->active_speed);
6837 cmd->duplex = lp->active_duplex;
6838 cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6839 cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6840 XCVR_EXTERNAL : XCVR_INTERNAL;
6841
6842 return 0;
6843}
6844
6845static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6846{
6847 struct niu *np = netdev_priv(dev);
6848 struct niu_link_config *lp = &np->link_config;
6849
6850 lp->advertising = cmd->advertising;
6851 lp->speed = ethtool_cmd_speed(cmd);
6852 lp->duplex = cmd->duplex;
6853 lp->autoneg = cmd->autoneg;
6854 return niu_init_link(np);
6855}
6856
6857static u32 niu_get_msglevel(struct net_device *dev)
6858{
6859 struct niu *np = netdev_priv(dev);
6860 return np->msg_enable;
6861}
6862
6863static void niu_set_msglevel(struct net_device *dev, u32 value)
6864{
6865 struct niu *np = netdev_priv(dev);
6866 np->msg_enable = value;
6867}
6868
6869static int niu_nway_reset(struct net_device *dev)
6870{
6871 struct niu *np = netdev_priv(dev);
6872
6873 if (np->link_config.autoneg)
6874 return niu_init_link(np);
6875
6876 return 0;
6877}
6878
6879static int niu_get_eeprom_len(struct net_device *dev)
6880{
6881 struct niu *np = netdev_priv(dev);
6882
6883 return np->eeprom_len;
6884}
6885
6886static int niu_get_eeprom(struct net_device *dev,
6887 struct ethtool_eeprom *eeprom, u8 *data)
6888{
6889 struct niu *np = netdev_priv(dev);
6890 u32 offset, len, val;
6891
6892 offset = eeprom->offset;
6893 len = eeprom->len;
6894
6895 if (offset + len < offset)
6896 return -EINVAL;
6897 if (offset >= np->eeprom_len)
6898 return -EINVAL;
6899 if (offset + len > np->eeprom_len)
6900 len = eeprom->len = np->eeprom_len - offset;
6901
6902 if (offset & 3) {
6903 u32 b_offset, b_count;
6904
6905 b_offset = offset & 3;
6906 b_count = 4 - b_offset;
6907 if (b_count > len)
6908 b_count = len;
6909
6910 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6911 memcpy(data, ((char *)&val) + b_offset, b_count);
6912 data += b_count;
6913 len -= b_count;
6914 offset += b_count;
6915 }
6916 while (len >= 4) {
6917 val = nr64(ESPC_NCR(offset / 4));
6918 memcpy(data, &val, 4);
6919 data += 4;
6920 len -= 4;
6921 offset += 4;
6922 }
6923 if (len) {
6924 val = nr64(ESPC_NCR(offset / 4));
6925 memcpy(data, &val, len);
6926 }
6927 return 0;
6928}
6929
6930static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6931{
6932 switch (flow_type) {
6933 case TCP_V4_FLOW:
6934 case TCP_V6_FLOW:
6935 *pid = IPPROTO_TCP;
6936 break;
6937 case UDP_V4_FLOW:
6938 case UDP_V6_FLOW:
6939 *pid = IPPROTO_UDP;
6940 break;
6941 case SCTP_V4_FLOW:
6942 case SCTP_V6_FLOW:
6943 *pid = IPPROTO_SCTP;
6944 break;
6945 case AH_V4_FLOW:
6946 case AH_V6_FLOW:
6947 *pid = IPPROTO_AH;
6948 break;
6949 case ESP_V4_FLOW:
6950 case ESP_V6_FLOW:
6951 *pid = IPPROTO_ESP;
6952 break;
6953 default:
6954 *pid = 0;
6955 break;
6956 }
6957}
6958
6959static int niu_class_to_ethflow(u64 class, int *flow_type)
6960{
6961 switch (class) {
6962 case CLASS_CODE_TCP_IPV4:
6963 *flow_type = TCP_V4_FLOW;
6964 break;
6965 case CLASS_CODE_UDP_IPV4:
6966 *flow_type = UDP_V4_FLOW;
6967 break;
6968 case CLASS_CODE_AH_ESP_IPV4:
6969 *flow_type = AH_V4_FLOW;
6970 break;
6971 case CLASS_CODE_SCTP_IPV4:
6972 *flow_type = SCTP_V4_FLOW;
6973 break;
6974 case CLASS_CODE_TCP_IPV6:
6975 *flow_type = TCP_V6_FLOW;
6976 break;
6977 case CLASS_CODE_UDP_IPV6:
6978 *flow_type = UDP_V6_FLOW;
6979 break;
6980 case CLASS_CODE_AH_ESP_IPV6:
6981 *flow_type = AH_V6_FLOW;
6982 break;
6983 case CLASS_CODE_SCTP_IPV6:
6984 *flow_type = SCTP_V6_FLOW;
6985 break;
6986 case CLASS_CODE_USER_PROG1:
6987 case CLASS_CODE_USER_PROG2:
6988 case CLASS_CODE_USER_PROG3:
6989 case CLASS_CODE_USER_PROG4:
6990 *flow_type = IP_USER_FLOW;
6991 break;
6992 default:
6993 return 0;
6994 }
6995
6996 return 1;
6997}
6998
6999static int niu_ethflow_to_class(int flow_type, u64 *class)
7000{
7001 switch (flow_type) {
7002 case TCP_V4_FLOW:
7003 *class = CLASS_CODE_TCP_IPV4;
7004 break;
7005 case UDP_V4_FLOW:
7006 *class = CLASS_CODE_UDP_IPV4;
7007 break;
7008 case AH_ESP_V4_FLOW:
7009 case AH_V4_FLOW:
7010 case ESP_V4_FLOW:
7011 *class = CLASS_CODE_AH_ESP_IPV4;
7012 break;
7013 case SCTP_V4_FLOW:
7014 *class = CLASS_CODE_SCTP_IPV4;
7015 break;
7016 case TCP_V6_FLOW:
7017 *class = CLASS_CODE_TCP_IPV6;
7018 break;
7019 case UDP_V6_FLOW:
7020 *class = CLASS_CODE_UDP_IPV6;
7021 break;
7022 case AH_ESP_V6_FLOW:
7023 case AH_V6_FLOW:
7024 case ESP_V6_FLOW:
7025 *class = CLASS_CODE_AH_ESP_IPV6;
7026 break;
7027 case SCTP_V6_FLOW:
7028 *class = CLASS_CODE_SCTP_IPV6;
7029 break;
7030 default:
7031 return 0;
7032 }
7033
7034 return 1;
7035}
7036
7037static u64 niu_flowkey_to_ethflow(u64 flow_key)
7038{
7039 u64 ethflow = 0;
7040
7041 if (flow_key & FLOW_KEY_L2DA)
7042 ethflow |= RXH_L2DA;
7043 if (flow_key & FLOW_KEY_VLAN)
7044 ethflow |= RXH_VLAN;
7045 if (flow_key & FLOW_KEY_IPSA)
7046 ethflow |= RXH_IP_SRC;
7047 if (flow_key & FLOW_KEY_IPDA)
7048 ethflow |= RXH_IP_DST;
7049 if (flow_key & FLOW_KEY_PROTO)
7050 ethflow |= RXH_L3_PROTO;
7051 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7052 ethflow |= RXH_L4_B_0_1;
7053 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7054 ethflow |= RXH_L4_B_2_3;
7055
7056 return ethflow;
7057
7058}
7059
7060static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7061{
7062 u64 key = 0;
7063
7064 if (ethflow & RXH_L2DA)
7065 key |= FLOW_KEY_L2DA;
7066 if (ethflow & RXH_VLAN)
7067 key |= FLOW_KEY_VLAN;
7068 if (ethflow & RXH_IP_SRC)
7069 key |= FLOW_KEY_IPSA;
7070 if (ethflow & RXH_IP_DST)
7071 key |= FLOW_KEY_IPDA;
7072 if (ethflow & RXH_L3_PROTO)
7073 key |= FLOW_KEY_PROTO;
7074 if (ethflow & RXH_L4_B_0_1)
7075 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7076 if (ethflow & RXH_L4_B_2_3)
7077 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7078
7079 *flow_key = key;
7080
7081 return 1;
7082
7083}
7084
7085static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7086{
7087 u64 class;
7088
7089 nfc->data = 0;
7090
7091 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7092 return -EINVAL;
7093
7094 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7095 TCAM_KEY_DISC)
7096 nfc->data = RXH_DISCARD;
7097 else
7098 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7099 CLASS_CODE_USER_PROG1]);
7100 return 0;
7101}
7102
7103static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7104 struct ethtool_rx_flow_spec *fsp)
7105{
7106 u32 tmp;
7107 u16 prt;
7108
7109 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7110 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7111
7112 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7113 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7114
7115 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7116 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7117
7118 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7119 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7120
7121 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7122 TCAM_V4KEY2_TOS_SHIFT;
7123 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7124 TCAM_V4KEY2_TOS_SHIFT;
7125
7126 switch (fsp->flow_type) {
7127 case TCP_V4_FLOW:
7128 case UDP_V4_FLOW:
7129 case SCTP_V4_FLOW:
7130 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7131 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7132 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7133
7134 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7135 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7136 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7137
7138 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7139 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7140 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7141
7142 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7143 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7144 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7145 break;
7146 case AH_V4_FLOW:
7147 case ESP_V4_FLOW:
7148 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7149 TCAM_V4KEY2_PORT_SPI_SHIFT;
7150 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7151
7152 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7153 TCAM_V4KEY2_PORT_SPI_SHIFT;
7154 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7155 break;
7156 case IP_USER_FLOW:
7157 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7158 TCAM_V4KEY2_PORT_SPI_SHIFT;
7159 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7160
7161 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7162 TCAM_V4KEY2_PORT_SPI_SHIFT;
7163 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7164
7165 fsp->h_u.usr_ip4_spec.proto =
7166 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7167 TCAM_V4KEY2_PROTO_SHIFT;
7168 fsp->m_u.usr_ip4_spec.proto =
7169 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7170 TCAM_V4KEY2_PROTO_SHIFT;
7171
7172 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7173 break;
7174 default:
7175 break;
7176 }
7177}
7178
7179static int niu_get_ethtool_tcam_entry(struct niu *np,
7180 struct ethtool_rxnfc *nfc)
7181{
7182 struct niu_parent *parent = np->parent;
7183 struct niu_tcam_entry *tp;
7184 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7185 u16 idx;
7186 u64 class;
7187 int ret = 0;
7188
7189 idx = tcam_get_index(np, (u16)nfc->fs.location);
7190
7191 tp = &parent->tcam[idx];
7192 if (!tp->valid) {
7193 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7194 parent->index, (u16)nfc->fs.location, idx);
7195 return -EINVAL;
7196 }
7197
7198 /* fill the flow spec entry */
7199 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7200 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7201 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7202
7203 if (ret < 0) {
7204 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7205 parent->index);
7206 ret = -EINVAL;
7207 goto out;
7208 }
7209
7210 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7211 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7212 TCAM_V4KEY2_PROTO_SHIFT;
7213 if (proto == IPPROTO_ESP) {
7214 if (fsp->flow_type == AH_V4_FLOW)
7215 fsp->flow_type = ESP_V4_FLOW;
7216 else
7217 fsp->flow_type = ESP_V6_FLOW;
7218 }
7219 }
7220
7221 switch (fsp->flow_type) {
7222 case TCP_V4_FLOW:
7223 case UDP_V4_FLOW:
7224 case SCTP_V4_FLOW:
7225 case AH_V4_FLOW:
7226 case ESP_V4_FLOW:
7227 niu_get_ip4fs_from_tcam_key(tp, fsp);
7228 break;
7229 case TCP_V6_FLOW:
7230 case UDP_V6_FLOW:
7231 case SCTP_V6_FLOW:
7232 case AH_V6_FLOW:
7233 case ESP_V6_FLOW:
7234 /* Not yet implemented */
7235 ret = -EINVAL;
7236 break;
7237 case IP_USER_FLOW:
7238 niu_get_ip4fs_from_tcam_key(tp, fsp);
7239 break;
7240 default:
7241 ret = -EINVAL;
7242 break;
7243 }
7244
7245 if (ret < 0)
7246 goto out;
7247
7248 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7249 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7250 else
7251 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7252 TCAM_ASSOCDATA_OFFSET_SHIFT;
7253
7254 /* put the tcam size here */
7255 nfc->data = tcam_get_size(np);
7256out:
7257 return ret;
7258}
7259
7260static int niu_get_ethtool_tcam_all(struct niu *np,
7261 struct ethtool_rxnfc *nfc,
7262 u32 *rule_locs)
7263{
7264 struct niu_parent *parent = np->parent;
7265 struct niu_tcam_entry *tp;
7266 int i, idx, cnt;
7267 unsigned long flags;
7268 int ret = 0;
7269
7270 /* put the tcam size here */
7271 nfc->data = tcam_get_size(np);
7272
7273 niu_lock_parent(np, flags);
7274 for (cnt = 0, i = 0; i < nfc->data; i++) {
7275 idx = tcam_get_index(np, i);
7276 tp = &parent->tcam[idx];
7277 if (!tp->valid)
7278 continue;
7279 if (cnt == nfc->rule_cnt) {
7280 ret = -EMSGSIZE;
7281 break;
7282 }
7283 rule_locs[cnt] = i;
7284 cnt++;
7285 }
7286 niu_unlock_parent(np, flags);
7287
7288 nfc->rule_cnt = cnt;
7289
7290 return ret;
7291}
7292
7293static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7294 u32 *rule_locs)
7295{
7296 struct niu *np = netdev_priv(dev);
7297 int ret = 0;
7298
7299 switch (cmd->cmd) {
7300 case ETHTOOL_GRXFH:
7301 ret = niu_get_hash_opts(np, cmd);
7302 break;
7303 case ETHTOOL_GRXRINGS:
7304 cmd->data = np->num_rx_rings;
7305 break;
7306 case ETHTOOL_GRXCLSRLCNT:
7307 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7308 break;
7309 case ETHTOOL_GRXCLSRULE:
7310 ret = niu_get_ethtool_tcam_entry(np, cmd);
7311 break;
7312 case ETHTOOL_GRXCLSRLALL:
7313 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7314 break;
7315 default:
7316 ret = -EINVAL;
7317 break;
7318 }
7319
7320 return ret;
7321}
7322
7323static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7324{
7325 u64 class;
7326 u64 flow_key = 0;
7327 unsigned long flags;
7328
7329 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7330 return -EINVAL;
7331
7332 if (class < CLASS_CODE_USER_PROG1 ||
7333 class > CLASS_CODE_SCTP_IPV6)
7334 return -EINVAL;
7335
7336 if (nfc->data & RXH_DISCARD) {
7337 niu_lock_parent(np, flags);
7338 flow_key = np->parent->tcam_key[class -
7339 CLASS_CODE_USER_PROG1];
7340 flow_key |= TCAM_KEY_DISC;
7341 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7342 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7343 niu_unlock_parent(np, flags);
7344 return 0;
7345 } else {
7346 /* Discard was set before, but is not set now */
7347 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7348 TCAM_KEY_DISC) {
7349 niu_lock_parent(np, flags);
7350 flow_key = np->parent->tcam_key[class -
7351 CLASS_CODE_USER_PROG1];
7352 flow_key &= ~TCAM_KEY_DISC;
7353 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7354 flow_key);
7355 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7356 flow_key;
7357 niu_unlock_parent(np, flags);
7358 }
7359 }
7360
7361 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7362 return -EINVAL;
7363
7364 niu_lock_parent(np, flags);
7365 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7366 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7367 niu_unlock_parent(np, flags);
7368
7369 return 0;
7370}
7371
7372static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7373 struct niu_tcam_entry *tp,
7374 int l2_rdc_tab, u64 class)
7375{
7376 u8 pid = 0;
7377 u32 sip, dip, sipm, dipm, spi, spim;
7378 u16 sport, dport, spm, dpm;
7379
7380 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7381 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7382 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7383 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7384
7385 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7386 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7387 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7388 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7389
7390 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7391 tp->key[3] |= dip;
7392
7393 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7394 tp->key_mask[3] |= dipm;
7395
7396 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7397 TCAM_V4KEY2_TOS_SHIFT);
7398 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7399 TCAM_V4KEY2_TOS_SHIFT);
7400 switch (fsp->flow_type) {
7401 case TCP_V4_FLOW:
7402 case UDP_V4_FLOW:
7403 case SCTP_V4_FLOW:
7404 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7405 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7406 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7407 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7408
7409 tp->key[2] |= (((u64)sport << 16) | dport);
7410 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7411 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7412 break;
7413 case AH_V4_FLOW:
7414 case ESP_V4_FLOW:
7415 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7416 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7417
7418 tp->key[2] |= spi;
7419 tp->key_mask[2] |= spim;
7420 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7421 break;
7422 case IP_USER_FLOW:
7423 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7424 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7425
7426 tp->key[2] |= spi;
7427 tp->key_mask[2] |= spim;
7428 pid = fsp->h_u.usr_ip4_spec.proto;
7429 break;
7430 default:
7431 break;
7432 }
7433
7434 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7435 if (pid) {
7436 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7437 }
7438}
7439
7440static int niu_add_ethtool_tcam_entry(struct niu *np,
7441 struct ethtool_rxnfc *nfc)
7442{
7443 struct niu_parent *parent = np->parent;
7444 struct niu_tcam_entry *tp;
7445 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7446 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7447 int l2_rdc_table = rdc_table->first_table_num;
7448 u16 idx;
7449 u64 class;
7450 unsigned long flags;
7451 int err, ret;
7452
7453 ret = 0;
7454
7455 idx = nfc->fs.location;
7456 if (idx >= tcam_get_size(np))
7457 return -EINVAL;
7458
7459 if (fsp->flow_type == IP_USER_FLOW) {
7460 int i;
7461 int add_usr_cls = 0;
7462 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7463 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7464
7465 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7466 return -EINVAL;
7467
7468 niu_lock_parent(np, flags);
7469
7470 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7471 if (parent->l3_cls[i]) {
7472 if (uspec->proto == parent->l3_cls_pid[i]) {
7473 class = parent->l3_cls[i];
7474 parent->l3_cls_refcnt[i]++;
7475 add_usr_cls = 1;
7476 break;
7477 }
7478 } else {
7479 /* Program new user IP class */
7480 switch (i) {
7481 case 0:
7482 class = CLASS_CODE_USER_PROG1;
7483 break;
7484 case 1:
7485 class = CLASS_CODE_USER_PROG2;
7486 break;
7487 case 2:
7488 class = CLASS_CODE_USER_PROG3;
7489 break;
7490 case 3:
7491 class = CLASS_CODE_USER_PROG4;
7492 break;
7493 default:
7494 break;
7495 }
7496 ret = tcam_user_ip_class_set(np, class, 0,
7497 uspec->proto,
7498 uspec->tos,
7499 umask->tos);
7500 if (ret)
7501 goto out;
7502
7503 ret = tcam_user_ip_class_enable(np, class, 1);
7504 if (ret)
7505 goto out;
7506 parent->l3_cls[i] = class;
7507 parent->l3_cls_pid[i] = uspec->proto;
7508 parent->l3_cls_refcnt[i]++;
7509 add_usr_cls = 1;
7510 break;
7511 }
7512 }
7513 if (!add_usr_cls) {
7514 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7515 parent->index, __func__, uspec->proto);
7516 ret = -EINVAL;
7517 goto out;
7518 }
7519 niu_unlock_parent(np, flags);
7520 } else {
7521 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7522 return -EINVAL;
7523 }
7524 }
7525
7526 niu_lock_parent(np, flags);
7527
7528 idx = tcam_get_index(np, idx);
7529 tp = &parent->tcam[idx];
7530
7531 memset(tp, 0, sizeof(*tp));
7532
7533 /* fill in the tcam key and mask */
7534 switch (fsp->flow_type) {
7535 case TCP_V4_FLOW:
7536 case UDP_V4_FLOW:
7537 case SCTP_V4_FLOW:
7538 case AH_V4_FLOW:
7539 case ESP_V4_FLOW:
7540 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7541 break;
7542 case TCP_V6_FLOW:
7543 case UDP_V6_FLOW:
7544 case SCTP_V6_FLOW:
7545 case AH_V6_FLOW:
7546 case ESP_V6_FLOW:
7547 /* Not yet implemented */
7548 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7549 parent->index, __func__, fsp->flow_type);
7550 ret = -EINVAL;
7551 goto out;
7552 case IP_USER_FLOW:
7553 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7554 break;
7555 default:
7556 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7557 parent->index, __func__, fsp->flow_type);
7558 ret = -EINVAL;
7559 goto out;
7560 }
7561
7562 /* fill in the assoc data */
7563 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7564 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7565 } else {
7566 if (fsp->ring_cookie >= np->num_rx_rings) {
7567 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7568 parent->index, __func__,
7569 (long long)fsp->ring_cookie);
7570 ret = -EINVAL;
7571 goto out;
7572 }
7573 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7574 (fsp->ring_cookie <<
7575 TCAM_ASSOCDATA_OFFSET_SHIFT));
7576 }
7577
7578 err = tcam_write(np, idx, tp->key, tp->key_mask);
7579 if (err) {
7580 ret = -EINVAL;
7581 goto out;
7582 }
7583 err = tcam_assoc_write(np, idx, tp->assoc_data);
7584 if (err) {
7585 ret = -EINVAL;
7586 goto out;
7587 }
7588
7589 /* validate the entry */
7590 tp->valid = 1;
7591 np->clas.tcam_valid_entries++;
7592out:
7593 niu_unlock_parent(np, flags);
7594
7595 return ret;
7596}
7597
7598static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7599{
7600 struct niu_parent *parent = np->parent;
7601 struct niu_tcam_entry *tp;
7602 u16 idx;
7603 unsigned long flags;
7604 u64 class;
7605 int ret = 0;
7606
7607 if (loc >= tcam_get_size(np))
7608 return -EINVAL;
7609
7610 niu_lock_parent(np, flags);
7611
7612 idx = tcam_get_index(np, loc);
7613 tp = &parent->tcam[idx];
7614
7615 /* if the entry is of a user defined class, then update*/
7616 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7617 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7618
7619 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7620 int i;
7621 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7622 if (parent->l3_cls[i] == class) {
7623 parent->l3_cls_refcnt[i]--;
7624 if (!parent->l3_cls_refcnt[i]) {
7625 /* disable class */
7626 ret = tcam_user_ip_class_enable(np,
7627 class,
7628 0);
7629 if (ret)
7630 goto out;
7631 parent->l3_cls[i] = 0;
7632 parent->l3_cls_pid[i] = 0;
7633 }
7634 break;
7635 }
7636 }
7637 if (i == NIU_L3_PROG_CLS) {
7638 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7639 parent->index, __func__,
7640 (unsigned long long)class);
7641 ret = -EINVAL;
7642 goto out;
7643 }
7644 }
7645
7646 ret = tcam_flush(np, idx);
7647 if (ret)
7648 goto out;
7649
7650 /* invalidate the entry */
7651 tp->valid = 0;
7652 np->clas.tcam_valid_entries--;
7653out:
7654 niu_unlock_parent(np, flags);
7655
7656 return ret;
7657}
7658
7659static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7660{
7661 struct niu *np = netdev_priv(dev);
7662 int ret = 0;
7663
7664 switch (cmd->cmd) {
7665 case ETHTOOL_SRXFH:
7666 ret = niu_set_hash_opts(np, cmd);
7667 break;
7668 case ETHTOOL_SRXCLSRLINS:
7669 ret = niu_add_ethtool_tcam_entry(np, cmd);
7670 break;
7671 case ETHTOOL_SRXCLSRLDEL:
7672 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7673 break;
7674 default:
7675 ret = -EINVAL;
7676 break;
7677 }
7678
7679 return ret;
7680}
7681
7682static const struct {
7683 const char string[ETH_GSTRING_LEN];
7684} niu_xmac_stat_keys[] = {
7685 { "tx_frames" },
7686 { "tx_bytes" },
7687 { "tx_fifo_errors" },
7688 { "tx_overflow_errors" },
7689 { "tx_max_pkt_size_errors" },
7690 { "tx_underflow_errors" },
7691 { "rx_local_faults" },
7692 { "rx_remote_faults" },
7693 { "rx_link_faults" },
7694 { "rx_align_errors" },
7695 { "rx_frags" },
7696 { "rx_mcasts" },
7697 { "rx_bcasts" },
7698 { "rx_hist_cnt1" },
7699 { "rx_hist_cnt2" },
7700 { "rx_hist_cnt3" },
7701 { "rx_hist_cnt4" },
7702 { "rx_hist_cnt5" },
7703 { "rx_hist_cnt6" },
7704 { "rx_hist_cnt7" },
7705 { "rx_octets" },
7706 { "rx_code_violations" },
7707 { "rx_len_errors" },
7708 { "rx_crc_errors" },
7709 { "rx_underflows" },
7710 { "rx_overflows" },
7711 { "pause_off_state" },
7712 { "pause_on_state" },
7713 { "pause_received" },
7714};
7715
7716#define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7717
7718static const struct {
7719 const char string[ETH_GSTRING_LEN];
7720} niu_bmac_stat_keys[] = {
7721 { "tx_underflow_errors" },
7722 { "tx_max_pkt_size_errors" },
7723 { "tx_bytes" },
7724 { "tx_frames" },
7725 { "rx_overflows" },
7726 { "rx_frames" },
7727 { "rx_align_errors" },
7728 { "rx_crc_errors" },
7729 { "rx_len_errors" },
7730 { "pause_off_state" },
7731 { "pause_on_state" },
7732 { "pause_received" },
7733};
7734
7735#define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7736
7737static const struct {
7738 const char string[ETH_GSTRING_LEN];
7739} niu_rxchan_stat_keys[] = {
7740 { "rx_channel" },
7741 { "rx_packets" },
7742 { "rx_bytes" },
7743 { "rx_dropped" },
7744 { "rx_errors" },
7745};
7746
7747#define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7748
7749static const struct {
7750 const char string[ETH_GSTRING_LEN];
7751} niu_txchan_stat_keys[] = {
7752 { "tx_channel" },
7753 { "tx_packets" },
7754 { "tx_bytes" },
7755 { "tx_errors" },
7756};
7757
7758#define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7759
7760static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7761{
7762 struct niu *np = netdev_priv(dev);
7763 int i;
7764
7765 if (stringset != ETH_SS_STATS)
7766 return;
7767
7768 if (np->flags & NIU_FLAGS_XMAC) {
7769 memcpy(data, niu_xmac_stat_keys,
7770 sizeof(niu_xmac_stat_keys));
7771 data += sizeof(niu_xmac_stat_keys);
7772 } else {
7773 memcpy(data, niu_bmac_stat_keys,
7774 sizeof(niu_bmac_stat_keys));
7775 data += sizeof(niu_bmac_stat_keys);
7776 }
7777 for (i = 0; i < np->num_rx_rings; i++) {
7778 memcpy(data, niu_rxchan_stat_keys,
7779 sizeof(niu_rxchan_stat_keys));
7780 data += sizeof(niu_rxchan_stat_keys);
7781 }
7782 for (i = 0; i < np->num_tx_rings; i++) {
7783 memcpy(data, niu_txchan_stat_keys,
7784 sizeof(niu_txchan_stat_keys));
7785 data += sizeof(niu_txchan_stat_keys);
7786 }
7787}
7788
7789static int niu_get_sset_count(struct net_device *dev, int stringset)
7790{
7791 struct niu *np = netdev_priv(dev);
7792
7793 if (stringset != ETH_SS_STATS)
7794 return -EINVAL;
7795
7796 return (np->flags & NIU_FLAGS_XMAC ?
7797 NUM_XMAC_STAT_KEYS :
7798 NUM_BMAC_STAT_KEYS) +
7799 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7800 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7801}
7802
7803static void niu_get_ethtool_stats(struct net_device *dev,
7804 struct ethtool_stats *stats, u64 *data)
7805{
7806 struct niu *np = netdev_priv(dev);
7807 int i;
7808
7809 niu_sync_mac_stats(np);
7810 if (np->flags & NIU_FLAGS_XMAC) {
7811 memcpy(data, &np->mac_stats.xmac,
7812 sizeof(struct niu_xmac_stats));
7813 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7814 } else {
7815 memcpy(data, &np->mac_stats.bmac,
7816 sizeof(struct niu_bmac_stats));
7817 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7818 }
7819 for (i = 0; i < np->num_rx_rings; i++) {
7820 struct rx_ring_info *rp = &np->rx_rings[i];
7821
7822 niu_sync_rx_discard_stats(np, rp, 0);
7823
7824 data[0] = rp->rx_channel;
7825 data[1] = rp->rx_packets;
7826 data[2] = rp->rx_bytes;
7827 data[3] = rp->rx_dropped;
7828 data[4] = rp->rx_errors;
7829 data += 5;
7830 }
7831 for (i = 0; i < np->num_tx_rings; i++) {
7832 struct tx_ring_info *rp = &np->tx_rings[i];
7833
7834 data[0] = rp->tx_channel;
7835 data[1] = rp->tx_packets;
7836 data[2] = rp->tx_bytes;
7837 data[3] = rp->tx_errors;
7838 data += 4;
7839 }
7840}
7841
7842static u64 niu_led_state_save(struct niu *np)
7843{
7844 if (np->flags & NIU_FLAGS_XMAC)
7845 return nr64_mac(XMAC_CONFIG);
7846 else
7847 return nr64_mac(BMAC_XIF_CONFIG);
7848}
7849
7850static void niu_led_state_restore(struct niu *np, u64 val)
7851{
7852 if (np->flags & NIU_FLAGS_XMAC)
7853 nw64_mac(XMAC_CONFIG, val);
7854 else
7855 nw64_mac(BMAC_XIF_CONFIG, val);
7856}
7857
7858static void niu_force_led(struct niu *np, int on)
7859{
7860 u64 val, reg, bit;
7861
7862 if (np->flags & NIU_FLAGS_XMAC) {
7863 reg = XMAC_CONFIG;
7864 bit = XMAC_CONFIG_FORCE_LED_ON;
7865 } else {
7866 reg = BMAC_XIF_CONFIG;
7867 bit = BMAC_XIF_CONFIG_LINK_LED;
7868 }
7869
7870 val = nr64_mac(reg);
7871 if (on)
7872 val |= bit;
7873 else
7874 val &= ~bit;
7875 nw64_mac(reg, val);
7876}
7877
7878static int niu_set_phys_id(struct net_device *dev,
7879 enum ethtool_phys_id_state state)
7880
7881{
7882 struct niu *np = netdev_priv(dev);
7883
7884 if (!netif_running(dev))
7885 return -EAGAIN;
7886
7887 switch (state) {
7888 case ETHTOOL_ID_ACTIVE:
7889 np->orig_led_state = niu_led_state_save(np);
7890 return 1; /* cycle on/off once per second */
7891
7892 case ETHTOOL_ID_ON:
7893 niu_force_led(np, 1);
7894 break;
7895
7896 case ETHTOOL_ID_OFF:
7897 niu_force_led(np, 0);
7898 break;
7899
7900 case ETHTOOL_ID_INACTIVE:
7901 niu_led_state_restore(np, np->orig_led_state);
7902 }
7903
7904 return 0;
7905}
7906
7907static const struct ethtool_ops niu_ethtool_ops = {
7908 .get_drvinfo = niu_get_drvinfo,
7909 .get_link = ethtool_op_get_link,
7910 .get_msglevel = niu_get_msglevel,
7911 .set_msglevel = niu_set_msglevel,
7912 .nway_reset = niu_nway_reset,
7913 .get_eeprom_len = niu_get_eeprom_len,
7914 .get_eeprom = niu_get_eeprom,
7915 .get_settings = niu_get_settings,
7916 .set_settings = niu_set_settings,
7917 .get_strings = niu_get_strings,
7918 .get_sset_count = niu_get_sset_count,
7919 .get_ethtool_stats = niu_get_ethtool_stats,
7920 .set_phys_id = niu_set_phys_id,
7921 .get_rxnfc = niu_get_nfc,
7922 .set_rxnfc = niu_set_nfc,
7923};
7924
7925static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7926 int ldg, int ldn)
7927{
7928 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7929 return -EINVAL;
7930 if (ldn < 0 || ldn > LDN_MAX)
7931 return -EINVAL;
7932
7933 parent->ldg_map[ldn] = ldg;
7934
7935 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7936 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7937 * the firmware, and we're not supposed to change them.
7938 * Validate the mapping, because if it's wrong we probably
7939 * won't get any interrupts and that's painful to debug.
7940 */
7941 if (nr64(LDG_NUM(ldn)) != ldg) {
7942 dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7943 np->port, ldn, ldg,
7944 (unsigned long long) nr64(LDG_NUM(ldn)));
7945 return -EINVAL;
7946 }
7947 } else
7948 nw64(LDG_NUM(ldn), ldg);
7949
7950 return 0;
7951}
7952
7953static int niu_set_ldg_timer_res(struct niu *np, int res)
7954{
7955 if (res < 0 || res > LDG_TIMER_RES_VAL)
7956 return -EINVAL;
7957
7958
7959 nw64(LDG_TIMER_RES, res);
7960
7961 return 0;
7962}
7963
7964static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7965{
7966 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7967 (func < 0 || func > 3) ||
7968 (vector < 0 || vector > 0x1f))
7969 return -EINVAL;
7970
7971 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7972
7973 return 0;
7974}
7975
7976static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7977{
7978 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7979 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7980 int limit;
7981
7982 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7983 return -EINVAL;
7984
7985 frame = frame_base;
7986 nw64(ESPC_PIO_STAT, frame);
7987 limit = 64;
7988 do {
7989 udelay(5);
7990 frame = nr64(ESPC_PIO_STAT);
7991 if (frame & ESPC_PIO_STAT_READ_END)
7992 break;
7993 } while (limit--);
7994 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7995 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7996 (unsigned long long) frame);
7997 return -ENODEV;
7998 }
7999
8000 frame = frame_base;
8001 nw64(ESPC_PIO_STAT, frame);
8002 limit = 64;
8003 do {
8004 udelay(5);
8005 frame = nr64(ESPC_PIO_STAT);
8006 if (frame & ESPC_PIO_STAT_READ_END)
8007 break;
8008 } while (limit--);
8009 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8010 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8011 (unsigned long long) frame);
8012 return -ENODEV;
8013 }
8014
8015 frame = nr64(ESPC_PIO_STAT);
8016 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8017}
8018
8019static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8020{
8021 int err = niu_pci_eeprom_read(np, off);
8022 u16 val;
8023
8024 if (err < 0)
8025 return err;
8026 val = (err << 8);
8027 err = niu_pci_eeprom_read(np, off + 1);
8028 if (err < 0)
8029 return err;
8030 val |= (err & 0xff);
8031
8032 return val;
8033}
8034
8035static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8036{
8037 int err = niu_pci_eeprom_read(np, off);
8038 u16 val;
8039
8040 if (err < 0)
8041 return err;
8042
8043 val = (err & 0xff);
8044 err = niu_pci_eeprom_read(np, off + 1);
8045 if (err < 0)
8046 return err;
8047
8048 val |= (err & 0xff) << 8;
8049
8050 return val;
8051}
8052
8053static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8054 u32 off,
8055 char *namebuf,
8056 int namebuf_len)
8057{
8058 int i;
8059
8060 for (i = 0; i < namebuf_len; i++) {
8061 int err = niu_pci_eeprom_read(np, off + i);
8062 if (err < 0)
8063 return err;
8064 *namebuf++ = err;
8065 if (!err)
8066 break;
8067 }
8068 if (i >= namebuf_len)
8069 return -EINVAL;
8070
8071 return i + 1;
8072}
8073
8074static void __devinit niu_vpd_parse_version(struct niu *np)
8075{
8076 struct niu_vpd *vpd = &np->vpd;
8077 int len = strlen(vpd->version) + 1;
8078 const char *s = vpd->version;
8079 int i;
8080
8081 for (i = 0; i < len - 5; i++) {
8082 if (!strncmp(s + i, "FCode ", 6))
8083 break;
8084 }
8085 if (i >= len - 5)
8086 return;
8087
8088 s += i + 5;
8089 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8090
8091 netif_printk(np, probe, KERN_DEBUG, np->dev,
8092 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8093 vpd->fcode_major, vpd->fcode_minor);
8094 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8095 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8096 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8097 np->flags |= NIU_FLAGS_VPD_VALID;
8098}
8099
8100/* ESPC_PIO_EN_ENABLE must be set */
8101static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8102 u32 start, u32 end)
8103{
8104 unsigned int found_mask = 0;
8105#define FOUND_MASK_MODEL 0x00000001
8106#define FOUND_MASK_BMODEL 0x00000002
8107#define FOUND_MASK_VERS 0x00000004
8108#define FOUND_MASK_MAC 0x00000008
8109#define FOUND_MASK_NMAC 0x00000010
8110#define FOUND_MASK_PHY 0x00000020
8111#define FOUND_MASK_ALL 0x0000003f
8112
8113 netif_printk(np, probe, KERN_DEBUG, np->dev,
8114 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8115 while (start < end) {
8116 int len, err, prop_len;
8117 char namebuf[64];
8118 u8 *prop_buf;
8119 int max_len;
8120
8121 if (found_mask == FOUND_MASK_ALL) {
8122 niu_vpd_parse_version(np);
8123 return 1;
8124 }
8125
8126 err = niu_pci_eeprom_read(np, start + 2);
8127 if (err < 0)
8128 return err;
8129 len = err;
8130 start += 3;
8131
8132 prop_len = niu_pci_eeprom_read(np, start + 4);
8133 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8134 if (err < 0)
8135 return err;
8136
8137 prop_buf = NULL;
8138 max_len = 0;
8139 if (!strcmp(namebuf, "model")) {
8140 prop_buf = np->vpd.model;
8141 max_len = NIU_VPD_MODEL_MAX;
8142 found_mask |= FOUND_MASK_MODEL;
8143 } else if (!strcmp(namebuf, "board-model")) {
8144 prop_buf = np->vpd.board_model;
8145 max_len = NIU_VPD_BD_MODEL_MAX;
8146 found_mask |= FOUND_MASK_BMODEL;
8147 } else if (!strcmp(namebuf, "version")) {
8148 prop_buf = np->vpd.version;
8149 max_len = NIU_VPD_VERSION_MAX;
8150 found_mask |= FOUND_MASK_VERS;
8151 } else if (!strcmp(namebuf, "local-mac-address")) {
8152 prop_buf = np->vpd.local_mac;
8153 max_len = ETH_ALEN;
8154 found_mask |= FOUND_MASK_MAC;
8155 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8156 prop_buf = &np->vpd.mac_num;
8157 max_len = 1;
8158 found_mask |= FOUND_MASK_NMAC;
8159 } else if (!strcmp(namebuf, "phy-type")) {
8160 prop_buf = np->vpd.phy_type;
8161 max_len = NIU_VPD_PHY_TYPE_MAX;
8162 found_mask |= FOUND_MASK_PHY;
8163 }
8164
8165 if (max_len && prop_len > max_len) {
8166 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8167 return -EINVAL;
8168 }
8169
8170 if (prop_buf) {
8171 u32 off = start + 5 + err;
8172 int i;
8173
8174 netif_printk(np, probe, KERN_DEBUG, np->dev,
8175 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8176 namebuf, prop_len);
8177 for (i = 0; i < prop_len; i++)
8178 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8179 }
8180
8181 start += len;
8182 }
8183
8184 return 0;
8185}
8186
8187/* ESPC_PIO_EN_ENABLE must be set */
8188static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8189{
8190 u32 offset;
8191 int err;
8192
8193 err = niu_pci_eeprom_read16_swp(np, start + 1);
8194 if (err < 0)
8195 return;
8196
8197 offset = err + 3;
8198
8199 while (start + offset < ESPC_EEPROM_SIZE) {
8200 u32 here = start + offset;
8201 u32 end;
8202
8203 err = niu_pci_eeprom_read(np, here);
8204 if (err != 0x90)
8205 return;
8206
8207 err = niu_pci_eeprom_read16_swp(np, here + 1);
8208 if (err < 0)
8209 return;
8210
8211 here = start + offset + 3;
8212 end = start + offset + err;
8213
8214 offset += err;
8215
8216 err = niu_pci_vpd_scan_props(np, here, end);
8217 if (err < 0 || err == 1)
8218 return;
8219 }
8220}
8221
8222/* ESPC_PIO_EN_ENABLE must be set */
8223static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8224{
8225 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8226 int err;
8227
8228 while (start < end) {
8229 ret = start;
8230
8231 /* ROM header signature? */
8232 err = niu_pci_eeprom_read16(np, start + 0);
8233 if (err != 0x55aa)
8234 return 0;
8235
8236 /* Apply offset to PCI data structure. */
8237 err = niu_pci_eeprom_read16(np, start + 23);
8238 if (err < 0)
8239 return 0;
8240 start += err;
8241
8242 /* Check for "PCIR" signature. */
8243 err = niu_pci_eeprom_read16(np, start + 0);
8244 if (err != 0x5043)
8245 return 0;
8246 err = niu_pci_eeprom_read16(np, start + 2);
8247 if (err != 0x4952)
8248 return 0;
8249
8250 /* Check for OBP image type. */
8251 err = niu_pci_eeprom_read(np, start + 20);
8252 if (err < 0)
8253 return 0;
8254 if (err != 0x01) {
8255 err = niu_pci_eeprom_read(np, ret + 2);
8256 if (err < 0)
8257 return 0;
8258
8259 start = ret + (err * 512);
8260 continue;
8261 }
8262
8263 err = niu_pci_eeprom_read16_swp(np, start + 8);
8264 if (err < 0)
8265 return err;
8266 ret += err;
8267
8268 err = niu_pci_eeprom_read(np, ret + 0);
8269 if (err != 0x82)
8270 return 0;
8271
8272 return ret;
8273 }
8274
8275 return 0;
8276}
8277
8278static int __devinit niu_phy_type_prop_decode(struct niu *np,
8279 const char *phy_prop)
8280{
8281 if (!strcmp(phy_prop, "mif")) {
8282 /* 1G copper, MII */
8283 np->flags &= ~(NIU_FLAGS_FIBER |
8284 NIU_FLAGS_10G);
8285 np->mac_xcvr = MAC_XCVR_MII;
8286 } else if (!strcmp(phy_prop, "xgf")) {
8287 /* 10G fiber, XPCS */
8288 np->flags |= (NIU_FLAGS_10G |
8289 NIU_FLAGS_FIBER);
8290 np->mac_xcvr = MAC_XCVR_XPCS;
8291 } else if (!strcmp(phy_prop, "pcs")) {
8292 /* 1G fiber, PCS */
8293 np->flags &= ~NIU_FLAGS_10G;
8294 np->flags |= NIU_FLAGS_FIBER;
8295 np->mac_xcvr = MAC_XCVR_PCS;
8296 } else if (!strcmp(phy_prop, "xgc")) {
8297 /* 10G copper, XPCS */
8298 np->flags |= NIU_FLAGS_10G;
8299 np->flags &= ~NIU_FLAGS_FIBER;
8300 np->mac_xcvr = MAC_XCVR_XPCS;
8301 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8302 /* 10G Serdes or 1G Serdes, default to 10G */
8303 np->flags |= NIU_FLAGS_10G;
8304 np->flags &= ~NIU_FLAGS_FIBER;
8305 np->flags |= NIU_FLAGS_XCVR_SERDES;
8306 np->mac_xcvr = MAC_XCVR_XPCS;
8307 } else {
8308 return -EINVAL;
8309 }
8310 return 0;
8311}
8312
8313static int niu_pci_vpd_get_nports(struct niu *np)
8314{
8315 int ports = 0;
8316
8317 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8318 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8319 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8320 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8321 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8322 ports = 4;
8323 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8324 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8325 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8326 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8327 ports = 2;
8328 }
8329
8330 return ports;
8331}
8332
8333static void __devinit niu_pci_vpd_validate(struct niu *np)
8334{
8335 struct net_device *dev = np->dev;
8336 struct niu_vpd *vpd = &np->vpd;
8337 u8 val8;
8338
8339 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8340 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8341
8342 np->flags &= ~NIU_FLAGS_VPD_VALID;
8343 return;
8344 }
8345
8346 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8347 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8348 np->flags |= NIU_FLAGS_10G;
8349 np->flags &= ~NIU_FLAGS_FIBER;
8350 np->flags |= NIU_FLAGS_XCVR_SERDES;
8351 np->mac_xcvr = MAC_XCVR_PCS;
8352 if (np->port > 1) {
8353 np->flags |= NIU_FLAGS_FIBER;
8354 np->flags &= ~NIU_FLAGS_10G;
8355 }
8356 if (np->flags & NIU_FLAGS_10G)
8357 np->mac_xcvr = MAC_XCVR_XPCS;
8358 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8359 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8360 NIU_FLAGS_HOTPLUG_PHY);
8361 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8362 dev_err(np->device, "Illegal phy string [%s]\n",
8363 np->vpd.phy_type);
8364 dev_err(np->device, "Falling back to SPROM\n");
8365 np->flags &= ~NIU_FLAGS_VPD_VALID;
8366 return;
8367 }
8368
8369 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8370
8371 val8 = dev->perm_addr[5];
8372 dev->perm_addr[5] += np->port;
8373 if (dev->perm_addr[5] < val8)
8374 dev->perm_addr[4]++;
8375
8376 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8377}
8378
8379static int __devinit niu_pci_probe_sprom(struct niu *np)
8380{
8381 struct net_device *dev = np->dev;
8382 int len, i;
8383 u64 val, sum;
8384 u8 val8;
8385
8386 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8387 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8388 len = val / 4;
8389
8390 np->eeprom_len = len;
8391
8392 netif_printk(np, probe, KERN_DEBUG, np->dev,
8393 "SPROM: Image size %llu\n", (unsigned long long)val);
8394
8395 sum = 0;
8396 for (i = 0; i < len; i++) {
8397 val = nr64(ESPC_NCR(i));
8398 sum += (val >> 0) & 0xff;
8399 sum += (val >> 8) & 0xff;
8400 sum += (val >> 16) & 0xff;
8401 sum += (val >> 24) & 0xff;
8402 }
8403 netif_printk(np, probe, KERN_DEBUG, np->dev,
8404 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8405 if ((sum & 0xff) != 0xab) {
8406 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8407 return -EINVAL;
8408 }
8409
8410 val = nr64(ESPC_PHY_TYPE);
8411 switch (np->port) {
8412 case 0:
8413 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8414 ESPC_PHY_TYPE_PORT0_SHIFT;
8415 break;
8416 case 1:
8417 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8418 ESPC_PHY_TYPE_PORT1_SHIFT;
8419 break;
8420 case 2:
8421 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8422 ESPC_PHY_TYPE_PORT2_SHIFT;
8423 break;
8424 case 3:
8425 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8426 ESPC_PHY_TYPE_PORT3_SHIFT;
8427 break;
8428 default:
8429 dev_err(np->device, "Bogus port number %u\n",
8430 np->port);
8431 return -EINVAL;
8432 }
8433 netif_printk(np, probe, KERN_DEBUG, np->dev,
8434 "SPROM: PHY type %x\n", val8);
8435
8436 switch (val8) {
8437 case ESPC_PHY_TYPE_1G_COPPER:
8438 /* 1G copper, MII */
8439 np->flags &= ~(NIU_FLAGS_FIBER |
8440 NIU_FLAGS_10G);
8441 np->mac_xcvr = MAC_XCVR_MII;
8442 break;
8443
8444 case ESPC_PHY_TYPE_1G_FIBER:
8445 /* 1G fiber, PCS */
8446 np->flags &= ~NIU_FLAGS_10G;
8447 np->flags |= NIU_FLAGS_FIBER;
8448 np->mac_xcvr = MAC_XCVR_PCS;
8449 break;
8450
8451 case ESPC_PHY_TYPE_10G_COPPER:
8452 /* 10G copper, XPCS */
8453 np->flags |= NIU_FLAGS_10G;
8454 np->flags &= ~NIU_FLAGS_FIBER;
8455 np->mac_xcvr = MAC_XCVR_XPCS;
8456 break;
8457
8458 case ESPC_PHY_TYPE_10G_FIBER:
8459 /* 10G fiber, XPCS */
8460 np->flags |= (NIU_FLAGS_10G |
8461 NIU_FLAGS_FIBER);
8462 np->mac_xcvr = MAC_XCVR_XPCS;
8463 break;
8464
8465 default:
8466 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8467 return -EINVAL;
8468 }
8469
8470 val = nr64(ESPC_MAC_ADDR0);
8471 netif_printk(np, probe, KERN_DEBUG, np->dev,
8472 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8473 dev->perm_addr[0] = (val >> 0) & 0xff;
8474 dev->perm_addr[1] = (val >> 8) & 0xff;
8475 dev->perm_addr[2] = (val >> 16) & 0xff;
8476 dev->perm_addr[3] = (val >> 24) & 0xff;
8477
8478 val = nr64(ESPC_MAC_ADDR1);
8479 netif_printk(np, probe, KERN_DEBUG, np->dev,
8480 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8481 dev->perm_addr[4] = (val >> 0) & 0xff;
8482 dev->perm_addr[5] = (val >> 8) & 0xff;
8483
8484 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8485 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8486 dev->perm_addr);
8487 return -EINVAL;
8488 }
8489
8490 val8 = dev->perm_addr[5];
8491 dev->perm_addr[5] += np->port;
8492 if (dev->perm_addr[5] < val8)
8493 dev->perm_addr[4]++;
8494
8495 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8496
8497 val = nr64(ESPC_MOD_STR_LEN);
8498 netif_printk(np, probe, KERN_DEBUG, np->dev,
8499 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8500 if (val >= 8 * 4)
8501 return -EINVAL;
8502
8503 for (i = 0; i < val; i += 4) {
8504 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8505
8506 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8507 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8508 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8509 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8510 }
8511 np->vpd.model[val] = '\0';
8512
8513 val = nr64(ESPC_BD_MOD_STR_LEN);
8514 netif_printk(np, probe, KERN_DEBUG, np->dev,
8515 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8516 if (val >= 4 * 4)
8517 return -EINVAL;
8518
8519 for (i = 0; i < val; i += 4) {
8520 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8521
8522 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8523 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8524 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8525 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8526 }
8527 np->vpd.board_model[val] = '\0';
8528
8529 np->vpd.mac_num =
8530 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8531 netif_printk(np, probe, KERN_DEBUG, np->dev,
8532 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8533
8534 return 0;
8535}
8536
8537static int __devinit niu_get_and_validate_port(struct niu *np)
8538{
8539 struct niu_parent *parent = np->parent;
8540
8541 if (np->port <= 1)
8542 np->flags |= NIU_FLAGS_XMAC;
8543
8544 if (!parent->num_ports) {
8545 if (parent->plat_type == PLAT_TYPE_NIU) {
8546 parent->num_ports = 2;
8547 } else {
8548 parent->num_ports = niu_pci_vpd_get_nports(np);
8549 if (!parent->num_ports) {
8550 /* Fall back to SPROM as last resort.
8551 * This will fail on most cards.
8552 */
8553 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8554 ESPC_NUM_PORTS_MACS_VAL;
8555
8556 /* All of the current probing methods fail on
8557 * Maramba on-board parts.
8558 */
8559 if (!parent->num_ports)
8560 parent->num_ports = 4;
8561 }
8562 }
8563 }
8564
8565 if (np->port >= parent->num_ports)
8566 return -ENODEV;
8567
8568 return 0;
8569}
8570
8571static int __devinit phy_record(struct niu_parent *parent,
8572 struct phy_probe_info *p,
8573 int dev_id_1, int dev_id_2, u8 phy_port,
8574 int type)
8575{
8576 u32 id = (dev_id_1 << 16) | dev_id_2;
8577 u8 idx;
8578
8579 if (dev_id_1 < 0 || dev_id_2 < 0)
8580 return 0;
8581 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8582 /* Because of the NIU_PHY_ID_MASK being applied, the 8704
8583 * test covers the 8706 as well.
8584 */
8585 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8586 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8587 return 0;
8588 } else {
8589 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8590 return 0;
8591 }
8592
8593 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8594 parent->index, id,
8595 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8596 type == PHY_TYPE_PCS ? "PCS" : "MII",
8597 phy_port);
8598
8599 if (p->cur[type] >= NIU_MAX_PORTS) {
8600 pr_err("Too many PHY ports\n");
8601 return -EINVAL;
8602 }
8603 idx = p->cur[type];
8604 p->phy_id[type][idx] = id;
8605 p->phy_port[type][idx] = phy_port;
8606 p->cur[type] = idx + 1;
8607 return 0;
8608}
8609
8610static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8611{
8612 int i;
8613
8614 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8615 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8616 return 1;
8617 }
8618 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8619 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8620 return 1;
8621 }
8622
8623 return 0;
8624}
8625
8626static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8627{
8628 int port, cnt;
8629
8630 cnt = 0;
8631 *lowest = 32;
8632 for (port = 8; port < 32; port++) {
8633 if (port_has_10g(p, port)) {
8634 if (!cnt)
8635 *lowest = port;
8636 cnt++;
8637 }
8638 }
8639
8640 return cnt;
8641}
8642
8643static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8644{
8645 *lowest = 32;
8646 if (p->cur[PHY_TYPE_MII])
8647 *lowest = p->phy_port[PHY_TYPE_MII][0];
8648
8649 return p->cur[PHY_TYPE_MII];
8650}
8651
8652static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8653{
8654 int num_ports = parent->num_ports;
8655 int i;
8656
8657 for (i = 0; i < num_ports; i++) {
8658 parent->rxchan_per_port[i] = (16 / num_ports);
8659 parent->txchan_per_port[i] = (16 / num_ports);
8660
8661 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8662 parent->index, i,
8663 parent->rxchan_per_port[i],
8664 parent->txchan_per_port[i]);
8665 }
8666}
8667
8668static void __devinit niu_divide_channels(struct niu_parent *parent,
8669 int num_10g, int num_1g)
8670{
8671 int num_ports = parent->num_ports;
8672 int rx_chans_per_10g, rx_chans_per_1g;
8673 int tx_chans_per_10g, tx_chans_per_1g;
8674 int i, tot_rx, tot_tx;
8675
8676 if (!num_10g || !num_1g) {
8677 rx_chans_per_10g = rx_chans_per_1g =
8678 (NIU_NUM_RXCHAN / num_ports);
8679 tx_chans_per_10g = tx_chans_per_1g =
8680 (NIU_NUM_TXCHAN / num_ports);
8681 } else {
8682 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8683 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8684 (rx_chans_per_1g * num_1g)) /
8685 num_10g;
8686
8687 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8688 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8689 (tx_chans_per_1g * num_1g)) /
8690 num_10g;
8691 }
8692
8693 tot_rx = tot_tx = 0;
8694 for (i = 0; i < num_ports; i++) {
8695 int type = phy_decode(parent->port_phy, i);
8696
8697 if (type == PORT_TYPE_10G) {
8698 parent->rxchan_per_port[i] = rx_chans_per_10g;
8699 parent->txchan_per_port[i] = tx_chans_per_10g;
8700 } else {
8701 parent->rxchan_per_port[i] = rx_chans_per_1g;
8702 parent->txchan_per_port[i] = tx_chans_per_1g;
8703 }
8704 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8705 parent->index, i,
8706 parent->rxchan_per_port[i],
8707 parent->txchan_per_port[i]);
8708 tot_rx += parent->rxchan_per_port[i];
8709 tot_tx += parent->txchan_per_port[i];
8710 }
8711
8712 if (tot_rx > NIU_NUM_RXCHAN) {
8713 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8714 parent->index, tot_rx);
8715 for (i = 0; i < num_ports; i++)
8716 parent->rxchan_per_port[i] = 1;
8717 }
8718 if (tot_tx > NIU_NUM_TXCHAN) {
8719 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8720 parent->index, tot_tx);
8721 for (i = 0; i < num_ports; i++)
8722 parent->txchan_per_port[i] = 1;
8723 }
8724 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8725 pr_warning("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8726 parent->index, tot_rx, tot_tx);
8727 }
8728}
8729
8730static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8731 int num_10g, int num_1g)
8732{
8733 int i, num_ports = parent->num_ports;
8734 int rdc_group, rdc_groups_per_port;
8735 int rdc_channel_base;
8736
8737 rdc_group = 0;
8738 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8739
8740 rdc_channel_base = 0;
8741
8742 for (i = 0; i < num_ports; i++) {
8743 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8744 int grp, num_channels = parent->rxchan_per_port[i];
8745 int this_channel_offset;
8746
8747 tp->first_table_num = rdc_group;
8748 tp->num_tables = rdc_groups_per_port;
8749 this_channel_offset = 0;
8750 for (grp = 0; grp < tp->num_tables; grp++) {
8751 struct rdc_table *rt = &tp->tables[grp];
8752 int slot;
8753
8754 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8755 parent->index, i, tp->first_table_num + grp);
8756 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8757 rt->rxdma_channel[slot] =
8758 rdc_channel_base + this_channel_offset;
8759
8760 pr_cont("%d ", rt->rxdma_channel[slot]);
8761
8762 if (++this_channel_offset == num_channels)
8763 this_channel_offset = 0;
8764 }
8765 pr_cont("]\n");
8766 }
8767
8768 parent->rdc_default[i] = rdc_channel_base;
8769
8770 rdc_channel_base += num_channels;
8771 rdc_group += rdc_groups_per_port;
8772 }
8773}
8774
8775static int __devinit fill_phy_probe_info(struct niu *np,
8776 struct niu_parent *parent,
8777 struct phy_probe_info *info)
8778{
8779 unsigned long flags;
8780 int port, err;
8781
8782 memset(info, 0, sizeof(*info));
8783
8784 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8785 niu_lock_parent(np, flags);
8786 err = 0;
8787 for (port = 8; port < 32; port++) {
8788 int dev_id_1, dev_id_2;
8789
8790 dev_id_1 = mdio_read(np, port,
8791 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8792 dev_id_2 = mdio_read(np, port,
8793 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8794 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8795 PHY_TYPE_PMA_PMD);
8796 if (err)
8797 break;
8798 dev_id_1 = mdio_read(np, port,
8799 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8800 dev_id_2 = mdio_read(np, port,
8801 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8802 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8803 PHY_TYPE_PCS);
8804 if (err)
8805 break;
8806 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8807 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8808 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8809 PHY_TYPE_MII);
8810 if (err)
8811 break;
8812 }
8813 niu_unlock_parent(np, flags);
8814
8815 return err;
8816}
8817
8818static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8819{
8820 struct phy_probe_info *info = &parent->phy_probe_info;
8821 int lowest_10g, lowest_1g;
8822 int num_10g, num_1g;
8823 u32 val;
8824 int err;
8825
8826 num_10g = num_1g = 0;
8827
8828 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8829 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8830 num_10g = 0;
8831 num_1g = 2;
8832 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8833 parent->num_ports = 4;
8834 val = (phy_encode(PORT_TYPE_1G, 0) |
8835 phy_encode(PORT_TYPE_1G, 1) |
8836 phy_encode(PORT_TYPE_1G, 2) |
8837 phy_encode(PORT_TYPE_1G, 3));
8838 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8839 num_10g = 2;
8840 num_1g = 0;
8841 parent->num_ports = 2;
8842 val = (phy_encode(PORT_TYPE_10G, 0) |
8843 phy_encode(PORT_TYPE_10G, 1));
8844 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8845 (parent->plat_type == PLAT_TYPE_NIU)) {
8846 /* this is the Monza case */
8847 if (np->flags & NIU_FLAGS_10G) {
8848 val = (phy_encode(PORT_TYPE_10G, 0) |
8849 phy_encode(PORT_TYPE_10G, 1));
8850 } else {
8851 val = (phy_encode(PORT_TYPE_1G, 0) |
8852 phy_encode(PORT_TYPE_1G, 1));
8853 }
8854 } else {
8855 err = fill_phy_probe_info(np, parent, info);
8856 if (err)
8857 return err;
8858
8859 num_10g = count_10g_ports(info, &lowest_10g);
8860 num_1g = count_1g_ports(info, &lowest_1g);
8861
8862 switch ((num_10g << 4) | num_1g) {
8863 case 0x24:
8864 if (lowest_1g == 10)
8865 parent->plat_type = PLAT_TYPE_VF_P0;
8866 else if (lowest_1g == 26)
8867 parent->plat_type = PLAT_TYPE_VF_P1;
8868 else
8869 goto unknown_vg_1g_port;
8870
8871 /* fallthru */
8872 case 0x22:
8873 val = (phy_encode(PORT_TYPE_10G, 0) |
8874 phy_encode(PORT_TYPE_10G, 1) |
8875 phy_encode(PORT_TYPE_1G, 2) |
8876 phy_encode(PORT_TYPE_1G, 3));
8877 break;
8878
8879 case 0x20:
8880 val = (phy_encode(PORT_TYPE_10G, 0) |
8881 phy_encode(PORT_TYPE_10G, 1));
8882 break;
8883
8884 case 0x10:
8885 val = phy_encode(PORT_TYPE_10G, np->port);
8886 break;
8887
8888 case 0x14:
8889 if (lowest_1g == 10)
8890 parent->plat_type = PLAT_TYPE_VF_P0;
8891 else if (lowest_1g == 26)
8892 parent->plat_type = PLAT_TYPE_VF_P1;
8893 else
8894 goto unknown_vg_1g_port;
8895
8896 /* fallthru */
8897 case 0x13:
8898 if ((lowest_10g & 0x7) == 0)
8899 val = (phy_encode(PORT_TYPE_10G, 0) |
8900 phy_encode(PORT_TYPE_1G, 1) |
8901 phy_encode(PORT_TYPE_1G, 2) |
8902 phy_encode(PORT_TYPE_1G, 3));
8903 else
8904 val = (phy_encode(PORT_TYPE_1G, 0) |
8905 phy_encode(PORT_TYPE_10G, 1) |
8906 phy_encode(PORT_TYPE_1G, 2) |
8907 phy_encode(PORT_TYPE_1G, 3));
8908 break;
8909
8910 case 0x04:
8911 if (lowest_1g == 10)
8912 parent->plat_type = PLAT_TYPE_VF_P0;
8913 else if (lowest_1g == 26)
8914 parent->plat_type = PLAT_TYPE_VF_P1;
8915 else
8916 goto unknown_vg_1g_port;
8917
8918 val = (phy_encode(PORT_TYPE_1G, 0) |
8919 phy_encode(PORT_TYPE_1G, 1) |
8920 phy_encode(PORT_TYPE_1G, 2) |
8921 phy_encode(PORT_TYPE_1G, 3));
8922 break;
8923
8924 default:
8925 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8926 num_10g, num_1g);
8927 return -EINVAL;
8928 }
8929 }
8930
8931 parent->port_phy = val;
8932
8933 if (parent->plat_type == PLAT_TYPE_NIU)
8934 niu_n2_divide_channels(parent);
8935 else
8936 niu_divide_channels(parent, num_10g, num_1g);
8937
8938 niu_divide_rdc_groups(parent, num_10g, num_1g);
8939
8940 return 0;
8941
8942unknown_vg_1g_port:
8943 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8944 return -EINVAL;
8945}
8946
8947static int __devinit niu_probe_ports(struct niu *np)
8948{
8949 struct niu_parent *parent = np->parent;
8950 int err, i;
8951
8952 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8953 err = walk_phys(np, parent);
8954 if (err)
8955 return err;
8956
8957 niu_set_ldg_timer_res(np, 2);
8958 for (i = 0; i <= LDN_MAX; i++)
8959 niu_ldn_irq_enable(np, i, 0);
8960 }
8961
8962 if (parent->port_phy == PORT_PHY_INVALID)
8963 return -EINVAL;
8964
8965 return 0;
8966}
8967
8968static int __devinit niu_classifier_swstate_init(struct niu *np)
8969{
8970 struct niu_classifier *cp = &np->clas;
8971
8972 cp->tcam_top = (u16) np->port;
8973 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8974 cp->h1_init = 0xffffffff;
8975 cp->h2_init = 0xffff;
8976
8977 return fflp_early_init(np);
8978}
8979
8980static void __devinit niu_link_config_init(struct niu *np)
8981{
8982 struct niu_link_config *lp = &np->link_config;
8983
8984 lp->advertising = (ADVERTISED_10baseT_Half |
8985 ADVERTISED_10baseT_Full |
8986 ADVERTISED_100baseT_Half |
8987 ADVERTISED_100baseT_Full |
8988 ADVERTISED_1000baseT_Half |
8989 ADVERTISED_1000baseT_Full |
8990 ADVERTISED_10000baseT_Full |
8991 ADVERTISED_Autoneg);
8992 lp->speed = lp->active_speed = SPEED_INVALID;
8993 lp->duplex = DUPLEX_FULL;
8994 lp->active_duplex = DUPLEX_INVALID;
8995 lp->autoneg = 1;
8996#if 0
8997 lp->loopback_mode = LOOPBACK_MAC;
8998 lp->active_speed = SPEED_10000;
8999 lp->active_duplex = DUPLEX_FULL;
9000#else
9001 lp->loopback_mode = LOOPBACK_DISABLED;
9002#endif
9003}
9004
9005static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
9006{
9007 switch (np->port) {
9008 case 0:
9009 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9010 np->ipp_off = 0x00000;
9011 np->pcs_off = 0x04000;
9012 np->xpcs_off = 0x02000;
9013 break;
9014
9015 case 1:
9016 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9017 np->ipp_off = 0x08000;
9018 np->pcs_off = 0x0a000;
9019 np->xpcs_off = 0x08000;
9020 break;
9021
9022 case 2:
9023 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9024 np->ipp_off = 0x04000;
9025 np->pcs_off = 0x0e000;
9026 np->xpcs_off = ~0UL;
9027 break;
9028
9029 case 3:
9030 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9031 np->ipp_off = 0x0c000;
9032 np->pcs_off = 0x12000;
9033 np->xpcs_off = ~0UL;
9034 break;
9035
9036 default:
9037 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9038 return -EINVAL;
9039 }
9040
9041 return 0;
9042}
9043
9044static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9045{
9046 struct msix_entry msi_vec[NIU_NUM_LDG];
9047 struct niu_parent *parent = np->parent;
9048 struct pci_dev *pdev = np->pdev;
9049 int i, num_irqs, err;
9050 u8 first_ldg;
9051
9052 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9053 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9054 ldg_num_map[i] = first_ldg + i;
9055
9056 num_irqs = (parent->rxchan_per_port[np->port] +
9057 parent->txchan_per_port[np->port] +
9058 (np->port == 0 ? 3 : 1));
9059 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9060
9061retry:
9062 for (i = 0; i < num_irqs; i++) {
9063 msi_vec[i].vector = 0;
9064 msi_vec[i].entry = i;
9065 }
9066
9067 err = pci_enable_msix(pdev, msi_vec, num_irqs);
9068 if (err < 0) {
9069 np->flags &= ~NIU_FLAGS_MSIX;
9070 return;
9071 }
9072 if (err > 0) {
9073 num_irqs = err;
9074 goto retry;
9075 }
9076
9077 np->flags |= NIU_FLAGS_MSIX;
9078 for (i = 0; i < num_irqs; i++)
9079 np->ldg[i].irq = msi_vec[i].vector;
9080 np->num_ldg = num_irqs;
9081}
9082
9083static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9084{
9085#ifdef CONFIG_SPARC64
9086 struct platform_device *op = np->op;
9087 const u32 *int_prop;
9088 int i;
9089
9090 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9091 if (!int_prop)
9092 return -ENODEV;
9093
9094 for (i = 0; i < op->archdata.num_irqs; i++) {
9095 ldg_num_map[i] = int_prop[i];
9096 np->ldg[i].irq = op->archdata.irqs[i];
9097 }
9098
9099 np->num_ldg = op->archdata.num_irqs;
9100
9101 return 0;
9102#else
9103 return -EINVAL;
9104#endif
9105}
9106
9107static int __devinit niu_ldg_init(struct niu *np)
9108{
9109 struct niu_parent *parent = np->parent;
9110 u8 ldg_num_map[NIU_NUM_LDG];
9111 int first_chan, num_chan;
9112 int i, err, ldg_rotor;
9113 u8 port;
9114
9115 np->num_ldg = 1;
9116 np->ldg[0].irq = np->dev->irq;
9117 if (parent->plat_type == PLAT_TYPE_NIU) {
9118 err = niu_n2_irq_init(np, ldg_num_map);
9119 if (err)
9120 return err;
9121 } else
9122 niu_try_msix(np, ldg_num_map);
9123
9124 port = np->port;
9125 for (i = 0; i < np->num_ldg; i++) {
9126 struct niu_ldg *lp = &np->ldg[i];
9127
9128 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9129
9130 lp->np = np;
9131 lp->ldg_num = ldg_num_map[i];
9132 lp->timer = 2; /* XXX */
9133
9134 /* On N2 NIU the firmware has setup the SID mappings so they go
9135 * to the correct values that will route the LDG to the proper
9136 * interrupt in the NCU interrupt table.
9137 */
9138 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9139 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9140 if (err)
9141 return err;
9142 }
9143 }
9144
9145 /* We adopt the LDG assignment ordering used by the N2 NIU
9146 * 'interrupt' properties because that simplifies a lot of
9147 * things. This ordering is:
9148 *
9149 * MAC
9150 * MIF (if port zero)
9151 * SYSERR (if port zero)
9152 * RX channels
9153 * TX channels
9154 */
9155
9156 ldg_rotor = 0;
9157
9158 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9159 LDN_MAC(port));
9160 if (err)
9161 return err;
9162
9163 ldg_rotor++;
9164 if (ldg_rotor == np->num_ldg)
9165 ldg_rotor = 0;
9166
9167 if (port == 0) {
9168 err = niu_ldg_assign_ldn(np, parent,
9169 ldg_num_map[ldg_rotor],
9170 LDN_MIF);
9171 if (err)
9172 return err;
9173
9174 ldg_rotor++;
9175 if (ldg_rotor == np->num_ldg)
9176 ldg_rotor = 0;
9177
9178 err = niu_ldg_assign_ldn(np, parent,
9179 ldg_num_map[ldg_rotor],
9180 LDN_DEVICE_ERROR);
9181 if (err)
9182 return err;
9183
9184 ldg_rotor++;
9185 if (ldg_rotor == np->num_ldg)
9186 ldg_rotor = 0;
9187
9188 }
9189
9190 first_chan = 0;
9191 for (i = 0; i < port; i++)
9192 first_chan += parent->rxchan_per_port[i];
9193 num_chan = parent->rxchan_per_port[port];
9194
9195 for (i = first_chan; i < (first_chan + num_chan); i++) {
9196 err = niu_ldg_assign_ldn(np, parent,
9197 ldg_num_map[ldg_rotor],
9198 LDN_RXDMA(i));
9199 if (err)
9200 return err;
9201 ldg_rotor++;
9202 if (ldg_rotor == np->num_ldg)
9203 ldg_rotor = 0;
9204 }
9205
9206 first_chan = 0;
9207 for (i = 0; i < port; i++)
9208 first_chan += parent->txchan_per_port[i];
9209 num_chan = parent->txchan_per_port[port];
9210 for (i = first_chan; i < (first_chan + num_chan); i++) {
9211 err = niu_ldg_assign_ldn(np, parent,
9212 ldg_num_map[ldg_rotor],
9213 LDN_TXDMA(i));
9214 if (err)
9215 return err;
9216 ldg_rotor++;
9217 if (ldg_rotor == np->num_ldg)
9218 ldg_rotor = 0;
9219 }
9220
9221 return 0;
9222}
9223
9224static void __devexit niu_ldg_free(struct niu *np)
9225{
9226 if (np->flags & NIU_FLAGS_MSIX)
9227 pci_disable_msix(np->pdev);
9228}
9229
9230static int __devinit niu_get_of_props(struct niu *np)
9231{
9232#ifdef CONFIG_SPARC64
9233 struct net_device *dev = np->dev;
9234 struct device_node *dp;
9235 const char *phy_type;
9236 const u8 *mac_addr;
9237 const char *model;
9238 int prop_len;
9239
9240 if (np->parent->plat_type == PLAT_TYPE_NIU)
9241 dp = np->op->dev.of_node;
9242 else
9243 dp = pci_device_to_OF_node(np->pdev);
9244
9245 phy_type = of_get_property(dp, "phy-type", &prop_len);
9246 if (!phy_type) {
9247 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9248 dp->full_name);
9249 return -EINVAL;
9250 }
9251
9252 if (!strcmp(phy_type, "none"))
9253 return -ENODEV;
9254
9255 strcpy(np->vpd.phy_type, phy_type);
9256
9257 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9258 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9259 dp->full_name, np->vpd.phy_type);
9260 return -EINVAL;
9261 }
9262
9263 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9264 if (!mac_addr) {
9265 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9266 dp->full_name);
9267 return -EINVAL;
9268 }
9269 if (prop_len != dev->addr_len) {
9270 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9271 dp->full_name, prop_len);
9272 }
9273 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9274 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9275 netdev_err(dev, "%s: OF MAC address is invalid\n",
9276 dp->full_name);
9277 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->perm_addr);
9278 return -EINVAL;
9279 }
9280
9281 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9282
9283 model = of_get_property(dp, "model", &prop_len);
9284
9285 if (model)
9286 strcpy(np->vpd.model, model);
9287
9288 if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9289 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9290 NIU_FLAGS_HOTPLUG_PHY);
9291 }
9292
9293 return 0;
9294#else
9295 return -EINVAL;
9296#endif
9297}
9298
9299static int __devinit niu_get_invariants(struct niu *np)
9300{
9301 int err, have_props;
9302 u32 offset;
9303
9304 err = niu_get_of_props(np);
9305 if (err == -ENODEV)
9306 return err;
9307
9308 have_props = !err;
9309
9310 err = niu_init_mac_ipp_pcs_base(np);
9311 if (err)
9312 return err;
9313
9314 if (have_props) {
9315 err = niu_get_and_validate_port(np);
9316 if (err)
9317 return err;
9318
9319 } else {
9320 if (np->parent->plat_type == PLAT_TYPE_NIU)
9321 return -EINVAL;
9322
9323 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9324 offset = niu_pci_vpd_offset(np);
9325 netif_printk(np, probe, KERN_DEBUG, np->dev,
9326 "%s() VPD offset [%08x]\n", __func__, offset);
9327 if (offset)
9328 niu_pci_vpd_fetch(np, offset);
9329 nw64(ESPC_PIO_EN, 0);
9330
9331 if (np->flags & NIU_FLAGS_VPD_VALID) {
9332 niu_pci_vpd_validate(np);
9333 err = niu_get_and_validate_port(np);
9334 if (err)
9335 return err;
9336 }
9337
9338 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9339 err = niu_get_and_validate_port(np);
9340 if (err)
9341 return err;
9342 err = niu_pci_probe_sprom(np);
9343 if (err)
9344 return err;
9345 }
9346 }
9347
9348 err = niu_probe_ports(np);
9349 if (err)
9350 return err;
9351
9352 niu_ldg_init(np);
9353
9354 niu_classifier_swstate_init(np);
9355 niu_link_config_init(np);
9356
9357 err = niu_determine_phy_disposition(np);
9358 if (!err)
9359 err = niu_init_link(np);
9360
9361 return err;
9362}
9363
9364static LIST_HEAD(niu_parent_list);
9365static DEFINE_MUTEX(niu_parent_lock);
9366static int niu_parent_index;
9367
9368static ssize_t show_port_phy(struct device *dev,
9369 struct device_attribute *attr, char *buf)
9370{
9371 struct platform_device *plat_dev = to_platform_device(dev);
9372 struct niu_parent *p = plat_dev->dev.platform_data;
9373 u32 port_phy = p->port_phy;
9374 char *orig_buf = buf;
9375 int i;
9376
9377 if (port_phy == PORT_PHY_UNKNOWN ||
9378 port_phy == PORT_PHY_INVALID)
9379 return 0;
9380
9381 for (i = 0; i < p->num_ports; i++) {
9382 const char *type_str;
9383 int type;
9384
9385 type = phy_decode(port_phy, i);
9386 if (type == PORT_TYPE_10G)
9387 type_str = "10G";
9388 else
9389 type_str = "1G";
9390 buf += sprintf(buf,
9391 (i == 0) ? "%s" : " %s",
9392 type_str);
9393 }
9394 buf += sprintf(buf, "\n");
9395 return buf - orig_buf;
9396}
9397
9398static ssize_t show_plat_type(struct device *dev,
9399 struct device_attribute *attr, char *buf)
9400{
9401 struct platform_device *plat_dev = to_platform_device(dev);
9402 struct niu_parent *p = plat_dev->dev.platform_data;
9403 const char *type_str;
9404
9405 switch (p->plat_type) {
9406 case PLAT_TYPE_ATLAS:
9407 type_str = "atlas";
9408 break;
9409 case PLAT_TYPE_NIU:
9410 type_str = "niu";
9411 break;
9412 case PLAT_TYPE_VF_P0:
9413 type_str = "vf_p0";
9414 break;
9415 case PLAT_TYPE_VF_P1:
9416 type_str = "vf_p1";
9417 break;
9418 default:
9419 type_str = "unknown";
9420 break;
9421 }
9422
9423 return sprintf(buf, "%s\n", type_str);
9424}
9425
9426static ssize_t __show_chan_per_port(struct device *dev,
9427 struct device_attribute *attr, char *buf,
9428 int rx)
9429{
9430 struct platform_device *plat_dev = to_platform_device(dev);
9431 struct niu_parent *p = plat_dev->dev.platform_data;
9432 char *orig_buf = buf;
9433 u8 *arr;
9434 int i;
9435
9436 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9437
9438 for (i = 0; i < p->num_ports; i++) {
9439 buf += sprintf(buf,
9440 (i == 0) ? "%d" : " %d",
9441 arr[i]);
9442 }
9443 buf += sprintf(buf, "\n");
9444
9445 return buf - orig_buf;
9446}
9447
9448static ssize_t show_rxchan_per_port(struct device *dev,
9449 struct device_attribute *attr, char *buf)
9450{
9451 return __show_chan_per_port(dev, attr, buf, 1);
9452}
9453
9454static ssize_t show_txchan_per_port(struct device *dev,
9455 struct device_attribute *attr, char *buf)
9456{
9457 return __show_chan_per_port(dev, attr, buf, 1);
9458}
9459
9460static ssize_t show_num_ports(struct device *dev,
9461 struct device_attribute *attr, char *buf)
9462{
9463 struct platform_device *plat_dev = to_platform_device(dev);
9464 struct niu_parent *p = plat_dev->dev.platform_data;
9465
9466 return sprintf(buf, "%d\n", p->num_ports);
9467}
9468
9469static struct device_attribute niu_parent_attributes[] = {
9470 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9471 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9472 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9473 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9474 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9475 {}
9476};
9477
9478static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9479 union niu_parent_id *id,
9480 u8 ptype)
9481{
9482 struct platform_device *plat_dev;
9483 struct niu_parent *p;
9484 int i;
9485
9486 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9487 NULL, 0);
9488 if (IS_ERR(plat_dev))
9489 return NULL;
9490
9491 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9492 int err = device_create_file(&plat_dev->dev,
9493 &niu_parent_attributes[i]);
9494 if (err)
9495 goto fail_unregister;
9496 }
9497
9498 p = kzalloc(sizeof(*p), GFP_KERNEL);
9499 if (!p)
9500 goto fail_unregister;
9501
9502 p->index = niu_parent_index++;
9503
9504 plat_dev->dev.platform_data = p;
9505 p->plat_dev = plat_dev;
9506
9507 memcpy(&p->id, id, sizeof(*id));
9508 p->plat_type = ptype;
9509 INIT_LIST_HEAD(&p->list);
9510 atomic_set(&p->refcnt, 0);
9511 list_add(&p->list, &niu_parent_list);
9512 spin_lock_init(&p->lock);
9513
9514 p->rxdma_clock_divider = 7500;
9515
9516 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9517 if (p->plat_type == PLAT_TYPE_NIU)
9518 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9519
9520 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9521 int index = i - CLASS_CODE_USER_PROG1;
9522
9523 p->tcam_key[index] = TCAM_KEY_TSEL;
9524 p->flow_key[index] = (FLOW_KEY_IPSA |
9525 FLOW_KEY_IPDA |
9526 FLOW_KEY_PROTO |
9527 (FLOW_KEY_L4_BYTE12 <<
9528 FLOW_KEY_L4_0_SHIFT) |
9529 (FLOW_KEY_L4_BYTE12 <<
9530 FLOW_KEY_L4_1_SHIFT));
9531 }
9532
9533 for (i = 0; i < LDN_MAX + 1; i++)
9534 p->ldg_map[i] = LDG_INVALID;
9535
9536 return p;
9537
9538fail_unregister:
9539 platform_device_unregister(plat_dev);
9540 return NULL;
9541}
9542
9543static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9544 union niu_parent_id *id,
9545 u8 ptype)
9546{
9547 struct niu_parent *p, *tmp;
9548 int port = np->port;
9549
9550 mutex_lock(&niu_parent_lock);
9551 p = NULL;
9552 list_for_each_entry(tmp, &niu_parent_list, list) {
9553 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9554 p = tmp;
9555 break;
9556 }
9557 }
9558 if (!p)
9559 p = niu_new_parent(np, id, ptype);
9560
9561 if (p) {
9562 char port_name[6];
9563 int err;
9564
9565 sprintf(port_name, "port%d", port);
9566 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9567 &np->device->kobj,
9568 port_name);
9569 if (!err) {
9570 p->ports[port] = np;
9571 atomic_inc(&p->refcnt);
9572 }
9573 }
9574 mutex_unlock(&niu_parent_lock);
9575
9576 return p;
9577}
9578
9579static void niu_put_parent(struct niu *np)
9580{
9581 struct niu_parent *p = np->parent;
9582 u8 port = np->port;
9583 char port_name[6];
9584
9585 BUG_ON(!p || p->ports[port] != np);
9586
9587 netif_printk(np, probe, KERN_DEBUG, np->dev,
9588 "%s() port[%u]\n", __func__, port);
9589
9590 sprintf(port_name, "port%d", port);
9591
9592 mutex_lock(&niu_parent_lock);
9593
9594 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9595
9596 p->ports[port] = NULL;
9597 np->parent = NULL;
9598
9599 if (atomic_dec_and_test(&p->refcnt)) {
9600 list_del(&p->list);
9601 platform_device_unregister(p->plat_dev);
9602 }
9603
9604 mutex_unlock(&niu_parent_lock);
9605}
9606
9607static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9608 u64 *handle, gfp_t flag)
9609{
9610 dma_addr_t dh;
9611 void *ret;
9612
9613 ret = dma_alloc_coherent(dev, size, &dh, flag);
9614 if (ret)
9615 *handle = dh;
9616 return ret;
9617}
9618
9619static void niu_pci_free_coherent(struct device *dev, size_t size,
9620 void *cpu_addr, u64 handle)
9621{
9622 dma_free_coherent(dev, size, cpu_addr, handle);
9623}
9624
9625static u64 niu_pci_map_page(struct device *dev, struct page *page,
9626 unsigned long offset, size_t size,
9627 enum dma_data_direction direction)
9628{
9629 return dma_map_page(dev, page, offset, size, direction);
9630}
9631
9632static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9633 size_t size, enum dma_data_direction direction)
9634{
9635 dma_unmap_page(dev, dma_address, size, direction);
9636}
9637
9638static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9639 size_t size,
9640 enum dma_data_direction direction)
9641{
9642 return dma_map_single(dev, cpu_addr, size, direction);
9643}
9644
9645static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9646 size_t size,
9647 enum dma_data_direction direction)
9648{
9649 dma_unmap_single(dev, dma_address, size, direction);
9650}
9651
9652static const struct niu_ops niu_pci_ops = {
9653 .alloc_coherent = niu_pci_alloc_coherent,
9654 .free_coherent = niu_pci_free_coherent,
9655 .map_page = niu_pci_map_page,
9656 .unmap_page = niu_pci_unmap_page,
9657 .map_single = niu_pci_map_single,
9658 .unmap_single = niu_pci_unmap_single,
9659};
9660
9661static void __devinit niu_driver_version(void)
9662{
9663 static int niu_version_printed;
9664
9665 if (niu_version_printed++ == 0)
9666 pr_info("%s", version);
9667}
9668
9669static struct net_device * __devinit niu_alloc_and_init(
9670 struct device *gen_dev, struct pci_dev *pdev,
9671 struct platform_device *op, const struct niu_ops *ops,
9672 u8 port)
9673{
9674 struct net_device *dev;
9675 struct niu *np;
9676
9677 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9678 if (!dev)
9679 return NULL;
9680
9681 SET_NETDEV_DEV(dev, gen_dev);
9682
9683 np = netdev_priv(dev);
9684 np->dev = dev;
9685 np->pdev = pdev;
9686 np->op = op;
9687 np->device = gen_dev;
9688 np->ops = ops;
9689
9690 np->msg_enable = niu_debug;
9691
9692 spin_lock_init(&np->lock);
9693 INIT_WORK(&np->reset_task, niu_reset_task);
9694
9695 np->port = port;
9696
9697 return dev;
9698}
9699
9700static const struct net_device_ops niu_netdev_ops = {
9701 .ndo_open = niu_open,
9702 .ndo_stop = niu_close,
9703 .ndo_start_xmit = niu_start_xmit,
9704 .ndo_get_stats64 = niu_get_stats,
9705 .ndo_set_rx_mode = niu_set_rx_mode,
9706 .ndo_validate_addr = eth_validate_addr,
9707 .ndo_set_mac_address = niu_set_mac_addr,
9708 .ndo_do_ioctl = niu_ioctl,
9709 .ndo_tx_timeout = niu_tx_timeout,
9710 .ndo_change_mtu = niu_change_mtu,
9711};
9712
9713static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9714{
9715 dev->netdev_ops = &niu_netdev_ops;
9716 dev->ethtool_ops = &niu_ethtool_ops;
9717 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9718}
9719
9720static void __devinit niu_device_announce(struct niu *np)
9721{
9722 struct net_device *dev = np->dev;
9723
9724 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9725
9726 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9727 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9728 dev->name,
9729 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9730 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9731 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9732 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9733 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9734 np->vpd.phy_type);
9735 } else {
9736 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9737 dev->name,
9738 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9739 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9740 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9741 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9742 "COPPER")),
9743 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9744 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9745 np->vpd.phy_type);
9746 }
9747}
9748
9749static void __devinit niu_set_basic_features(struct net_device *dev)
9750{
9751 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9752 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9753}
9754
9755static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9756 const struct pci_device_id *ent)
9757{
9758 union niu_parent_id parent_id;
9759 struct net_device *dev;
9760 struct niu *np;
9761 int err, pos;
9762 u64 dma_mask;
9763 u16 val16;
9764
9765 niu_driver_version();
9766
9767 err = pci_enable_device(pdev);
9768 if (err) {
9769 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9770 return err;
9771 }
9772
9773 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9774 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9775 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9776 err = -ENODEV;
9777 goto err_out_disable_pdev;
9778 }
9779
9780 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9781 if (err) {
9782 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9783 goto err_out_disable_pdev;
9784 }
9785
9786 pos = pci_pcie_cap(pdev);
9787 if (pos <= 0) {
9788 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9789 goto err_out_free_res;
9790 }
9791
9792 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9793 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9794 if (!dev) {
9795 err = -ENOMEM;
9796 goto err_out_free_res;
9797 }
9798 np = netdev_priv(dev);
9799
9800 memset(&parent_id, 0, sizeof(parent_id));
9801 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9802 parent_id.pci.bus = pdev->bus->number;
9803 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9804
9805 np->parent = niu_get_parent(np, &parent_id,
9806 PLAT_TYPE_ATLAS);
9807 if (!np->parent) {
9808 err = -ENOMEM;
9809 goto err_out_free_dev;
9810 }
9811
9812 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9813 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9814 val16 |= (PCI_EXP_DEVCTL_CERE |
9815 PCI_EXP_DEVCTL_NFERE |
9816 PCI_EXP_DEVCTL_FERE |
9817 PCI_EXP_DEVCTL_URRE |
9818 PCI_EXP_DEVCTL_RELAX_EN);
9819 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9820
9821 dma_mask = DMA_BIT_MASK(44);
9822 err = pci_set_dma_mask(pdev, dma_mask);
9823 if (!err) {
9824 dev->features |= NETIF_F_HIGHDMA;
9825 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9826 if (err) {
9827 dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9828 goto err_out_release_parent;
9829 }
9830 }
9831 if (err) {
9832 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9833 if (err) {
9834 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9835 goto err_out_release_parent;
9836 }
9837 }
9838
9839 niu_set_basic_features(dev);
9840
9841 dev->priv_flags |= IFF_UNICAST_FLT;
9842
9843 np->regs = pci_ioremap_bar(pdev, 0);
9844 if (!np->regs) {
9845 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9846 err = -ENOMEM;
9847 goto err_out_release_parent;
9848 }
9849
9850 pci_set_master(pdev);
9851 pci_save_state(pdev);
9852
9853 dev->irq = pdev->irq;
9854
9855 niu_assign_netdev_ops(dev);
9856
9857 err = niu_get_invariants(np);
9858 if (err) {
9859 if (err != -ENODEV)
9860 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9861 goto err_out_iounmap;
9862 }
9863
9864 err = register_netdev(dev);
9865 if (err) {
9866 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9867 goto err_out_iounmap;
9868 }
9869
9870 pci_set_drvdata(pdev, dev);
9871
9872 niu_device_announce(np);
9873
9874 return 0;
9875
9876err_out_iounmap:
9877 if (np->regs) {
9878 iounmap(np->regs);
9879 np->regs = NULL;
9880 }
9881
9882err_out_release_parent:
9883 niu_put_parent(np);
9884
9885err_out_free_dev:
9886 free_netdev(dev);
9887
9888err_out_free_res:
9889 pci_release_regions(pdev);
9890
9891err_out_disable_pdev:
9892 pci_disable_device(pdev);
9893 pci_set_drvdata(pdev, NULL);
9894
9895 return err;
9896}
9897
9898static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9899{
9900 struct net_device *dev = pci_get_drvdata(pdev);
9901
9902 if (dev) {
9903 struct niu *np = netdev_priv(dev);
9904
9905 unregister_netdev(dev);
9906 if (np->regs) {
9907 iounmap(np->regs);
9908 np->regs = NULL;
9909 }
9910
9911 niu_ldg_free(np);
9912
9913 niu_put_parent(np);
9914
9915 free_netdev(dev);
9916 pci_release_regions(pdev);
9917 pci_disable_device(pdev);
9918 pci_set_drvdata(pdev, NULL);
9919 }
9920}
9921
9922static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9923{
9924 struct net_device *dev = pci_get_drvdata(pdev);
9925 struct niu *np = netdev_priv(dev);
9926 unsigned long flags;
9927
9928 if (!netif_running(dev))
9929 return 0;
9930
9931 flush_work_sync(&np->reset_task);
9932 niu_netif_stop(np);
9933
9934 del_timer_sync(&np->timer);
9935
9936 spin_lock_irqsave(&np->lock, flags);
9937 niu_enable_interrupts(np, 0);
9938 spin_unlock_irqrestore(&np->lock, flags);
9939
9940 netif_device_detach(dev);
9941
9942 spin_lock_irqsave(&np->lock, flags);
9943 niu_stop_hw(np);
9944 spin_unlock_irqrestore(&np->lock, flags);
9945
9946 pci_save_state(pdev);
9947
9948 return 0;
9949}
9950
9951static int niu_resume(struct pci_dev *pdev)
9952{
9953 struct net_device *dev = pci_get_drvdata(pdev);
9954 struct niu *np = netdev_priv(dev);
9955 unsigned long flags;
9956 int err;
9957
9958 if (!netif_running(dev))
9959 return 0;
9960
9961 pci_restore_state(pdev);
9962
9963 netif_device_attach(dev);
9964
9965 spin_lock_irqsave(&np->lock, flags);
9966
9967 err = niu_init_hw(np);
9968 if (!err) {
9969 np->timer.expires = jiffies + HZ;
9970 add_timer(&np->timer);
9971 niu_netif_start(np);
9972 }
9973
9974 spin_unlock_irqrestore(&np->lock, flags);
9975
9976 return err;
9977}
9978
9979static struct pci_driver niu_pci_driver = {
9980 .name = DRV_MODULE_NAME,
9981 .id_table = niu_pci_tbl,
9982 .probe = niu_pci_init_one,
9983 .remove = __devexit_p(niu_pci_remove_one),
9984 .suspend = niu_suspend,
9985 .resume = niu_resume,
9986};
9987
9988#ifdef CONFIG_SPARC64
9989static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9990 u64 *dma_addr, gfp_t flag)
9991{
9992 unsigned long order = get_order(size);
9993 unsigned long page = __get_free_pages(flag, order);
9994
9995 if (page == 0UL)
9996 return NULL;
9997 memset((char *)page, 0, PAGE_SIZE << order);
9998 *dma_addr = __pa(page);
9999
10000 return (void *) page;
10001}
10002
10003static void niu_phys_free_coherent(struct device *dev, size_t size,
10004 void *cpu_addr, u64 handle)
10005{
10006 unsigned long order = get_order(size);
10007
10008 free_pages((unsigned long) cpu_addr, order);
10009}
10010
10011static u64 niu_phys_map_page(struct device *dev, struct page *page,
10012 unsigned long offset, size_t size,
10013 enum dma_data_direction direction)
10014{
10015 return page_to_phys(page) + offset;
10016}
10017
10018static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10019 size_t size, enum dma_data_direction direction)
10020{
10021 /* Nothing to do. */
10022}
10023
10024static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10025 size_t size,
10026 enum dma_data_direction direction)
10027{
10028 return __pa(cpu_addr);
10029}
10030
10031static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10032 size_t size,
10033 enum dma_data_direction direction)
10034{
10035 /* Nothing to do. */
10036}
10037
10038static const struct niu_ops niu_phys_ops = {
10039 .alloc_coherent = niu_phys_alloc_coherent,
10040 .free_coherent = niu_phys_free_coherent,
10041 .map_page = niu_phys_map_page,
10042 .unmap_page = niu_phys_unmap_page,
10043 .map_single = niu_phys_map_single,
10044 .unmap_single = niu_phys_unmap_single,
10045};
10046
10047static int __devinit niu_of_probe(struct platform_device *op)
10048{
10049 union niu_parent_id parent_id;
10050 struct net_device *dev;
10051 struct niu *np;
10052 const u32 *reg;
10053 int err;
10054
10055 niu_driver_version();
10056
10057 reg = of_get_property(op->dev.of_node, "reg", NULL);
10058 if (!reg) {
10059 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10060 op->dev.of_node->full_name);
10061 return -ENODEV;
10062 }
10063
10064 dev = niu_alloc_and_init(&op->dev, NULL, op,
10065 &niu_phys_ops, reg[0] & 0x1);
10066 if (!dev) {
10067 err = -ENOMEM;
10068 goto err_out;
10069 }
10070 np = netdev_priv(dev);
10071
10072 memset(&parent_id, 0, sizeof(parent_id));
10073 parent_id.of = of_get_parent(op->dev.of_node);
10074
10075 np->parent = niu_get_parent(np, &parent_id,
10076 PLAT_TYPE_NIU);
10077 if (!np->parent) {
10078 err = -ENOMEM;
10079 goto err_out_free_dev;
10080 }
10081
10082 niu_set_basic_features(dev);
10083
10084 np->regs = of_ioremap(&op->resource[1], 0,
10085 resource_size(&op->resource[1]),
10086 "niu regs");
10087 if (!np->regs) {
10088 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10089 err = -ENOMEM;
10090 goto err_out_release_parent;
10091 }
10092
10093 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10094 resource_size(&op->resource[2]),
10095 "niu vregs-1");
10096 if (!np->vir_regs_1) {
10097 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10098 err = -ENOMEM;
10099 goto err_out_iounmap;
10100 }
10101
10102 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10103 resource_size(&op->resource[3]),
10104 "niu vregs-2");
10105 if (!np->vir_regs_2) {
10106 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10107 err = -ENOMEM;
10108 goto err_out_iounmap;
10109 }
10110
10111 niu_assign_netdev_ops(dev);
10112
10113 err = niu_get_invariants(np);
10114 if (err) {
10115 if (err != -ENODEV)
10116 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10117 goto err_out_iounmap;
10118 }
10119
10120 err = register_netdev(dev);
10121 if (err) {
10122 dev_err(&op->dev, "Cannot register net device, aborting\n");
10123 goto err_out_iounmap;
10124 }
10125
10126 dev_set_drvdata(&op->dev, dev);
10127
10128 niu_device_announce(np);
10129
10130 return 0;
10131
10132err_out_iounmap:
10133 if (np->vir_regs_1) {
10134 of_iounmap(&op->resource[2], np->vir_regs_1,
10135 resource_size(&op->resource[2]));
10136 np->vir_regs_1 = NULL;
10137 }
10138
10139 if (np->vir_regs_2) {
10140 of_iounmap(&op->resource[3], np->vir_regs_2,
10141 resource_size(&op->resource[3]));
10142 np->vir_regs_2 = NULL;
10143 }
10144
10145 if (np->regs) {
10146 of_iounmap(&op->resource[1], np->regs,
10147 resource_size(&op->resource[1]));
10148 np->regs = NULL;
10149 }
10150
10151err_out_release_parent:
10152 niu_put_parent(np);
10153
10154err_out_free_dev:
10155 free_netdev(dev);
10156
10157err_out:
10158 return err;
10159}
10160
10161static int __devexit niu_of_remove(struct platform_device *op)
10162{
10163 struct net_device *dev = dev_get_drvdata(&op->dev);
10164
10165 if (dev) {
10166 struct niu *np = netdev_priv(dev);
10167
10168 unregister_netdev(dev);
10169
10170 if (np->vir_regs_1) {
10171 of_iounmap(&op->resource[2], np->vir_regs_1,
10172 resource_size(&op->resource[2]));
10173 np->vir_regs_1 = NULL;
10174 }
10175
10176 if (np->vir_regs_2) {
10177 of_iounmap(&op->resource[3], np->vir_regs_2,
10178 resource_size(&op->resource[3]));
10179 np->vir_regs_2 = NULL;
10180 }
10181
10182 if (np->regs) {
10183 of_iounmap(&op->resource[1], np->regs,
10184 resource_size(&op->resource[1]));
10185 np->regs = NULL;
10186 }
10187
10188 niu_ldg_free(np);
10189
10190 niu_put_parent(np);
10191
10192 free_netdev(dev);
10193 dev_set_drvdata(&op->dev, NULL);
10194 }
10195 return 0;
10196}
10197
10198static const struct of_device_id niu_match[] = {
10199 {
10200 .name = "network",
10201 .compatible = "SUNW,niusl",
10202 },
10203 {},
10204};
10205MODULE_DEVICE_TABLE(of, niu_match);
10206
10207static struct platform_driver niu_of_driver = {
10208 .driver = {
10209 .name = "niu",
10210 .owner = THIS_MODULE,
10211 .of_match_table = niu_match,
10212 },
10213 .probe = niu_of_probe,
10214 .remove = __devexit_p(niu_of_remove),
10215};
10216
10217#endif /* CONFIG_SPARC64 */
10218
10219static int __init niu_init(void)
10220{
10221 int err = 0;
10222
10223 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10224
10225 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10226
10227#ifdef CONFIG_SPARC64
10228 err = platform_driver_register(&niu_of_driver);
10229#endif
10230
10231 if (!err) {
10232 err = pci_register_driver(&niu_pci_driver);
10233#ifdef CONFIG_SPARC64
10234 if (err)
10235 platform_driver_unregister(&niu_of_driver);
10236#endif
10237 }
10238
10239 return err;
10240}
10241
10242static void __exit niu_exit(void)
10243{
10244 pci_unregister_driver(&niu_pci_driver);
10245#ifdef CONFIG_SPARC64
10246 platform_driver_unregister(&niu_of_driver);
10247#endif
10248}
10249
10250module_init(niu_init);
10251module_exit(niu_exit);