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-rw-r--r--drivers/net/ethernet/sun/niu.c10261
1 files changed, 10261 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
new file mode 100644
index 000000000000..73c708107a37
--- /dev/null
+++ b/drivers/net/ethernet/sun/niu.c
@@ -0,0 +1,10261 @@
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 = 0;
1155 if (advert & ADVERTISE_10HALF)
1156 advertising |= ADVERTISED_10baseT_Half;
1157 if (advert & ADVERTISE_10FULL)
1158 advertising |= ADVERTISED_10baseT_Full;
1159 if (advert & ADVERTISE_100HALF)
1160 advertising |= ADVERTISED_100baseT_Half;
1161 if (advert & ADVERTISE_100FULL)
1162 advertising |= ADVERTISED_100baseT_Full;
1163 if (ctrl1000 & ADVERTISE_1000HALF)
1164 advertising |= ADVERTISED_1000baseT_Half;
1165 if (ctrl1000 & ADVERTISE_1000FULL)
1166 advertising |= ADVERTISED_1000baseT_Full;
1167
1168 if (bmcr & BMCR_ANENABLE) {
1169 int neg, neg1000;
1170
1171 lp->active_autoneg = 1;
1172 advertising |= ADVERTISED_Autoneg;
1173
1174 neg = advert & lpa;
1175 neg1000 = (ctrl1000 << 2) & stat1000;
1176
1177 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1178 active_speed = SPEED_1000;
1179 else if (neg & LPA_100)
1180 active_speed = SPEED_100;
1181 else if (neg & (LPA_10HALF | LPA_10FULL))
1182 active_speed = SPEED_10;
1183 else
1184 active_speed = SPEED_INVALID;
1185
1186 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1187 active_duplex = DUPLEX_FULL;
1188 else if (active_speed != SPEED_INVALID)
1189 active_duplex = DUPLEX_HALF;
1190 else
1191 active_duplex = DUPLEX_INVALID;
1192 } else {
1193 lp->active_autoneg = 0;
1194
1195 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1196 active_speed = SPEED_1000;
1197 else if (bmcr & BMCR_SPEED100)
1198 active_speed = SPEED_100;
1199 else
1200 active_speed = SPEED_10;
1201
1202 if (bmcr & BMCR_FULLDPLX)
1203 active_duplex = DUPLEX_FULL;
1204 else
1205 active_duplex = DUPLEX_HALF;
1206 }
1207
1208 lp->active_advertising = advertising;
1209 lp->active_speed = active_speed;
1210 lp->active_duplex = active_duplex;
1211 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1212
1213 return 0;
1214}
1215
1216static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1217{
1218 struct niu_link_config *lp = &np->link_config;
1219 u16 current_speed, bmsr;
1220 unsigned long flags;
1221 u8 current_duplex;
1222 int err, link_up;
1223
1224 link_up = 0;
1225 current_speed = SPEED_INVALID;
1226 current_duplex = DUPLEX_INVALID;
1227
1228 spin_lock_irqsave(&np->lock, flags);
1229
1230 err = -EINVAL;
1231
1232 err = mii_read(np, np->phy_addr, MII_BMSR);
1233 if (err < 0)
1234 goto out;
1235
1236 bmsr = err;
1237 if (bmsr & BMSR_LSTATUS) {
1238 u16 adv, lpa;
1239
1240 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1241 if (err < 0)
1242 goto out;
1243 adv = err;
1244
1245 err = mii_read(np, np->phy_addr, MII_LPA);
1246 if (err < 0)
1247 goto out;
1248 lpa = err;
1249
1250 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1251 if (err < 0)
1252 goto out;
1253 link_up = 1;
1254 current_speed = SPEED_1000;
1255 current_duplex = DUPLEX_FULL;
1256
1257 }
1258 lp->active_speed = current_speed;
1259 lp->active_duplex = current_duplex;
1260 err = 0;
1261
1262out:
1263 spin_unlock_irqrestore(&np->lock, flags);
1264
1265 *link_up_p = link_up;
1266 return err;
1267}
1268
1269static int link_status_1g(struct niu *np, int *link_up_p)
1270{
1271 struct niu_link_config *lp = &np->link_config;
1272 unsigned long flags;
1273 int err;
1274
1275 spin_lock_irqsave(&np->lock, flags);
1276
1277 err = link_status_mii(np, link_up_p);
1278 lp->supported |= SUPPORTED_TP;
1279 lp->active_advertising |= ADVERTISED_TP;
1280
1281 spin_unlock_irqrestore(&np->lock, flags);
1282 return err;
1283}
1284
1285static int bcm8704_reset(struct niu *np)
1286{
1287 int err, limit;
1288
1289 err = mdio_read(np, np->phy_addr,
1290 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1291 if (err < 0 || err == 0xffff)
1292 return err;
1293 err |= BMCR_RESET;
1294 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1295 MII_BMCR, err);
1296 if (err)
1297 return err;
1298
1299 limit = 1000;
1300 while (--limit >= 0) {
1301 err = mdio_read(np, np->phy_addr,
1302 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1303 if (err < 0)
1304 return err;
1305 if (!(err & BMCR_RESET))
1306 break;
1307 }
1308 if (limit < 0) {
1309 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1310 np->port, (err & 0xffff));
1311 return -ENODEV;
1312 }
1313 return 0;
1314}
1315
1316/* When written, certain PHY registers need to be read back twice
1317 * in order for the bits to settle properly.
1318 */
1319static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1320{
1321 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1322 if (err < 0)
1323 return err;
1324 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1325 if (err < 0)
1326 return err;
1327 return 0;
1328}
1329
1330static int bcm8706_init_user_dev3(struct niu *np)
1331{
1332 int err;
1333
1334
1335 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1336 BCM8704_USER_OPT_DIGITAL_CTRL);
1337 if (err < 0)
1338 return err;
1339 err &= ~USER_ODIG_CTRL_GPIOS;
1340 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1341 err |= USER_ODIG_CTRL_RESV2;
1342 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1343 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1344 if (err)
1345 return err;
1346
1347 mdelay(1000);
1348
1349 return 0;
1350}
1351
1352static int bcm8704_init_user_dev3(struct niu *np)
1353{
1354 int err;
1355
1356 err = mdio_write(np, np->phy_addr,
1357 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1358 (USER_CONTROL_OPTXRST_LVL |
1359 USER_CONTROL_OPBIASFLT_LVL |
1360 USER_CONTROL_OBTMPFLT_LVL |
1361 USER_CONTROL_OPPRFLT_LVL |
1362 USER_CONTROL_OPTXFLT_LVL |
1363 USER_CONTROL_OPRXLOS_LVL |
1364 USER_CONTROL_OPRXFLT_LVL |
1365 USER_CONTROL_OPTXON_LVL |
1366 (0x3f << USER_CONTROL_RES1_SHIFT)));
1367 if (err)
1368 return err;
1369
1370 err = mdio_write(np, np->phy_addr,
1371 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1372 (USER_PMD_TX_CTL_XFP_CLKEN |
1373 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1374 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1375 USER_PMD_TX_CTL_TSCK_LPWREN));
1376 if (err)
1377 return err;
1378
1379 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1380 if (err)
1381 return err;
1382 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1383 if (err)
1384 return err;
1385
1386 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1387 BCM8704_USER_OPT_DIGITAL_CTRL);
1388 if (err < 0)
1389 return err;
1390 err &= ~USER_ODIG_CTRL_GPIOS;
1391 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1392 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1393 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1394 if (err)
1395 return err;
1396
1397 mdelay(1000);
1398
1399 return 0;
1400}
1401
1402static int mrvl88x2011_act_led(struct niu *np, int val)
1403{
1404 int err;
1405
1406 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1407 MRVL88X2011_LED_8_TO_11_CTL);
1408 if (err < 0)
1409 return err;
1410
1411 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1412 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1413
1414 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1415 MRVL88X2011_LED_8_TO_11_CTL, err);
1416}
1417
1418static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1419{
1420 int err;
1421
1422 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1423 MRVL88X2011_LED_BLINK_CTL);
1424 if (err >= 0) {
1425 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1426 err |= (rate << 4);
1427
1428 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1429 MRVL88X2011_LED_BLINK_CTL, err);
1430 }
1431
1432 return err;
1433}
1434
1435static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1436{
1437 int err;
1438
1439 /* Set LED functions */
1440 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1441 if (err)
1442 return err;
1443
1444 /* led activity */
1445 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1446 if (err)
1447 return err;
1448
1449 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1450 MRVL88X2011_GENERAL_CTL);
1451 if (err < 0)
1452 return err;
1453
1454 err |= MRVL88X2011_ENA_XFPREFCLK;
1455
1456 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1457 MRVL88X2011_GENERAL_CTL, err);
1458 if (err < 0)
1459 return err;
1460
1461 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1462 MRVL88X2011_PMA_PMD_CTL_1);
1463 if (err < 0)
1464 return err;
1465
1466 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1467 err |= MRVL88X2011_LOOPBACK;
1468 else
1469 err &= ~MRVL88X2011_LOOPBACK;
1470
1471 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1472 MRVL88X2011_PMA_PMD_CTL_1, err);
1473 if (err < 0)
1474 return err;
1475
1476 /* Enable PMD */
1477 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1478 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1479}
1480
1481
1482static int xcvr_diag_bcm870x(struct niu *np)
1483{
1484 u16 analog_stat0, tx_alarm_status;
1485 int err = 0;
1486
1487#if 1
1488 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1489 MII_STAT1000);
1490 if (err < 0)
1491 return err;
1492 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1493
1494 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1495 if (err < 0)
1496 return err;
1497 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1498
1499 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1500 MII_NWAYTEST);
1501 if (err < 0)
1502 return err;
1503 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1504#endif
1505
1506 /* XXX dig this out it might not be so useful XXX */
1507 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1508 BCM8704_USER_ANALOG_STATUS0);
1509 if (err < 0)
1510 return err;
1511 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1512 BCM8704_USER_ANALOG_STATUS0);
1513 if (err < 0)
1514 return err;
1515 analog_stat0 = err;
1516
1517 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1518 BCM8704_USER_TX_ALARM_STATUS);
1519 if (err < 0)
1520 return err;
1521 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1522 BCM8704_USER_TX_ALARM_STATUS);
1523 if (err < 0)
1524 return err;
1525 tx_alarm_status = err;
1526
1527 if (analog_stat0 != 0x03fc) {
1528 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1529 pr_info("Port %u cable not connected or bad cable\n",
1530 np->port);
1531 } else if (analog_stat0 == 0x639c) {
1532 pr_info("Port %u optical module is bad or missing\n",
1533 np->port);
1534 }
1535 }
1536
1537 return 0;
1538}
1539
1540static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1541{
1542 struct niu_link_config *lp = &np->link_config;
1543 int err;
1544
1545 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1546 MII_BMCR);
1547 if (err < 0)
1548 return err;
1549
1550 err &= ~BMCR_LOOPBACK;
1551
1552 if (lp->loopback_mode == LOOPBACK_MAC)
1553 err |= BMCR_LOOPBACK;
1554
1555 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1556 MII_BMCR, err);
1557 if (err)
1558 return err;
1559
1560 return 0;
1561}
1562
1563static int xcvr_init_10g_bcm8706(struct niu *np)
1564{
1565 int err = 0;
1566 u64 val;
1567
1568 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1569 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1570 return err;
1571
1572 val = nr64_mac(XMAC_CONFIG);
1573 val &= ~XMAC_CONFIG_LED_POLARITY;
1574 val |= XMAC_CONFIG_FORCE_LED_ON;
1575 nw64_mac(XMAC_CONFIG, val);
1576
1577 val = nr64(MIF_CONFIG);
1578 val |= MIF_CONFIG_INDIRECT_MODE;
1579 nw64(MIF_CONFIG, val);
1580
1581 err = bcm8704_reset(np);
1582 if (err)
1583 return err;
1584
1585 err = xcvr_10g_set_lb_bcm870x(np);
1586 if (err)
1587 return err;
1588
1589 err = bcm8706_init_user_dev3(np);
1590 if (err)
1591 return err;
1592
1593 err = xcvr_diag_bcm870x(np);
1594 if (err)
1595 return err;
1596
1597 return 0;
1598}
1599
1600static int xcvr_init_10g_bcm8704(struct niu *np)
1601{
1602 int err;
1603
1604 err = bcm8704_reset(np);
1605 if (err)
1606 return err;
1607
1608 err = bcm8704_init_user_dev3(np);
1609 if (err)
1610 return err;
1611
1612 err = xcvr_10g_set_lb_bcm870x(np);
1613 if (err)
1614 return err;
1615
1616 err = xcvr_diag_bcm870x(np);
1617 if (err)
1618 return err;
1619
1620 return 0;
1621}
1622
1623static int xcvr_init_10g(struct niu *np)
1624{
1625 int phy_id, err;
1626 u64 val;
1627
1628 val = nr64_mac(XMAC_CONFIG);
1629 val &= ~XMAC_CONFIG_LED_POLARITY;
1630 val |= XMAC_CONFIG_FORCE_LED_ON;
1631 nw64_mac(XMAC_CONFIG, val);
1632
1633 /* XXX shared resource, lock parent XXX */
1634 val = nr64(MIF_CONFIG);
1635 val |= MIF_CONFIG_INDIRECT_MODE;
1636 nw64(MIF_CONFIG, val);
1637
1638 phy_id = phy_decode(np->parent->port_phy, np->port);
1639 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1640
1641 /* handle different phy types */
1642 switch (phy_id & NIU_PHY_ID_MASK) {
1643 case NIU_PHY_ID_MRVL88X2011:
1644 err = xcvr_init_10g_mrvl88x2011(np);
1645 break;
1646
1647 default: /* bcom 8704 */
1648 err = xcvr_init_10g_bcm8704(np);
1649 break;
1650 }
1651
1652 return err;
1653}
1654
1655static int mii_reset(struct niu *np)
1656{
1657 int limit, err;
1658
1659 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1660 if (err)
1661 return err;
1662
1663 limit = 1000;
1664 while (--limit >= 0) {
1665 udelay(500);
1666 err = mii_read(np, np->phy_addr, MII_BMCR);
1667 if (err < 0)
1668 return err;
1669 if (!(err & BMCR_RESET))
1670 break;
1671 }
1672 if (limit < 0) {
1673 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1674 np->port, err);
1675 return -ENODEV;
1676 }
1677
1678 return 0;
1679}
1680
1681static int xcvr_init_1g_rgmii(struct niu *np)
1682{
1683 int err;
1684 u64 val;
1685 u16 bmcr, bmsr, estat;
1686
1687 val = nr64(MIF_CONFIG);
1688 val &= ~MIF_CONFIG_INDIRECT_MODE;
1689 nw64(MIF_CONFIG, val);
1690
1691 err = mii_reset(np);
1692 if (err)
1693 return err;
1694
1695 err = mii_read(np, np->phy_addr, MII_BMSR);
1696 if (err < 0)
1697 return err;
1698 bmsr = err;
1699
1700 estat = 0;
1701 if (bmsr & BMSR_ESTATEN) {
1702 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1703 if (err < 0)
1704 return err;
1705 estat = err;
1706 }
1707
1708 bmcr = 0;
1709 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1710 if (err)
1711 return err;
1712
1713 if (bmsr & BMSR_ESTATEN) {
1714 u16 ctrl1000 = 0;
1715
1716 if (estat & ESTATUS_1000_TFULL)
1717 ctrl1000 |= ADVERTISE_1000FULL;
1718 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1719 if (err)
1720 return err;
1721 }
1722
1723 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1724
1725 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1726 if (err)
1727 return err;
1728
1729 err = mii_read(np, np->phy_addr, MII_BMCR);
1730 if (err < 0)
1731 return err;
1732 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1733
1734 err = mii_read(np, np->phy_addr, MII_BMSR);
1735 if (err < 0)
1736 return err;
1737
1738 return 0;
1739}
1740
1741static int mii_init_common(struct niu *np)
1742{
1743 struct niu_link_config *lp = &np->link_config;
1744 u16 bmcr, bmsr, adv, estat;
1745 int err;
1746
1747 err = mii_reset(np);
1748 if (err)
1749 return err;
1750
1751 err = mii_read(np, np->phy_addr, MII_BMSR);
1752 if (err < 0)
1753 return err;
1754 bmsr = err;
1755
1756 estat = 0;
1757 if (bmsr & BMSR_ESTATEN) {
1758 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1759 if (err < 0)
1760 return err;
1761 estat = err;
1762 }
1763
1764 bmcr = 0;
1765 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1766 if (err)
1767 return err;
1768
1769 if (lp->loopback_mode == LOOPBACK_MAC) {
1770 bmcr |= BMCR_LOOPBACK;
1771 if (lp->active_speed == SPEED_1000)
1772 bmcr |= BMCR_SPEED1000;
1773 if (lp->active_duplex == DUPLEX_FULL)
1774 bmcr |= BMCR_FULLDPLX;
1775 }
1776
1777 if (lp->loopback_mode == LOOPBACK_PHY) {
1778 u16 aux;
1779
1780 aux = (BCM5464R_AUX_CTL_EXT_LB |
1781 BCM5464R_AUX_CTL_WRITE_1);
1782 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1783 if (err)
1784 return err;
1785 }
1786
1787 if (lp->autoneg) {
1788 u16 ctrl1000;
1789
1790 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1791 if ((bmsr & BMSR_10HALF) &&
1792 (lp->advertising & ADVERTISED_10baseT_Half))
1793 adv |= ADVERTISE_10HALF;
1794 if ((bmsr & BMSR_10FULL) &&
1795 (lp->advertising & ADVERTISED_10baseT_Full))
1796 adv |= ADVERTISE_10FULL;
1797 if ((bmsr & BMSR_100HALF) &&
1798 (lp->advertising & ADVERTISED_100baseT_Half))
1799 adv |= ADVERTISE_100HALF;
1800 if ((bmsr & BMSR_100FULL) &&
1801 (lp->advertising & ADVERTISED_100baseT_Full))
1802 adv |= ADVERTISE_100FULL;
1803 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1804 if (err)
1805 return err;
1806
1807 if (likely(bmsr & BMSR_ESTATEN)) {
1808 ctrl1000 = 0;
1809 if ((estat & ESTATUS_1000_THALF) &&
1810 (lp->advertising & ADVERTISED_1000baseT_Half))
1811 ctrl1000 |= ADVERTISE_1000HALF;
1812 if ((estat & ESTATUS_1000_TFULL) &&
1813 (lp->advertising & ADVERTISED_1000baseT_Full))
1814 ctrl1000 |= ADVERTISE_1000FULL;
1815 err = mii_write(np, np->phy_addr,
1816 MII_CTRL1000, ctrl1000);
1817 if (err)
1818 return err;
1819 }
1820
1821 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1822 } else {
1823 /* !lp->autoneg */
1824 int fulldpx;
1825
1826 if (lp->duplex == DUPLEX_FULL) {
1827 bmcr |= BMCR_FULLDPLX;
1828 fulldpx = 1;
1829 } else if (lp->duplex == DUPLEX_HALF)
1830 fulldpx = 0;
1831 else
1832 return -EINVAL;
1833
1834 if (lp->speed == SPEED_1000) {
1835 /* if X-full requested while not supported, or
1836 X-half requested while not supported... */
1837 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1838 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1839 return -EINVAL;
1840 bmcr |= BMCR_SPEED1000;
1841 } else if (lp->speed == SPEED_100) {
1842 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1843 (!fulldpx && !(bmsr & BMSR_100HALF)))
1844 return -EINVAL;
1845 bmcr |= BMCR_SPEED100;
1846 } else if (lp->speed == SPEED_10) {
1847 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1848 (!fulldpx && !(bmsr & BMSR_10HALF)))
1849 return -EINVAL;
1850 } else
1851 return -EINVAL;
1852 }
1853
1854 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1855 if (err)
1856 return err;
1857
1858#if 0
1859 err = mii_read(np, np->phy_addr, MII_BMCR);
1860 if (err < 0)
1861 return err;
1862 bmcr = err;
1863
1864 err = mii_read(np, np->phy_addr, MII_BMSR);
1865 if (err < 0)
1866 return err;
1867 bmsr = err;
1868
1869 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1870 np->port, bmcr, bmsr);
1871#endif
1872
1873 return 0;
1874}
1875
1876static int xcvr_init_1g(struct niu *np)
1877{
1878 u64 val;
1879
1880 /* XXX shared resource, lock parent XXX */
1881 val = nr64(MIF_CONFIG);
1882 val &= ~MIF_CONFIG_INDIRECT_MODE;
1883 nw64(MIF_CONFIG, val);
1884
1885 return mii_init_common(np);
1886}
1887
1888static int niu_xcvr_init(struct niu *np)
1889{
1890 const struct niu_phy_ops *ops = np->phy_ops;
1891 int err;
1892
1893 err = 0;
1894 if (ops->xcvr_init)
1895 err = ops->xcvr_init(np);
1896
1897 return err;
1898}
1899
1900static int niu_serdes_init(struct niu *np)
1901{
1902 const struct niu_phy_ops *ops = np->phy_ops;
1903 int err;
1904
1905 err = 0;
1906 if (ops->serdes_init)
1907 err = ops->serdes_init(np);
1908
1909 return err;
1910}
1911
1912static void niu_init_xif(struct niu *);
1913static void niu_handle_led(struct niu *, int status);
1914
1915static int niu_link_status_common(struct niu *np, int link_up)
1916{
1917 struct niu_link_config *lp = &np->link_config;
1918 struct net_device *dev = np->dev;
1919 unsigned long flags;
1920
1921 if (!netif_carrier_ok(dev) && link_up) {
1922 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1923 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1924 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1925 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1926 "10Mbit/sec",
1927 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1928
1929 spin_lock_irqsave(&np->lock, flags);
1930 niu_init_xif(np);
1931 niu_handle_led(np, 1);
1932 spin_unlock_irqrestore(&np->lock, flags);
1933
1934 netif_carrier_on(dev);
1935 } else if (netif_carrier_ok(dev) && !link_up) {
1936 netif_warn(np, link, dev, "Link is down\n");
1937 spin_lock_irqsave(&np->lock, flags);
1938 niu_handle_led(np, 0);
1939 spin_unlock_irqrestore(&np->lock, flags);
1940 netif_carrier_off(dev);
1941 }
1942
1943 return 0;
1944}
1945
1946static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1947{
1948 int err, link_up, pma_status, pcs_status;
1949
1950 link_up = 0;
1951
1952 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1953 MRVL88X2011_10G_PMD_STATUS_2);
1954 if (err < 0)
1955 goto out;
1956
1957 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1958 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1959 MRVL88X2011_PMA_PMD_STATUS_1);
1960 if (err < 0)
1961 goto out;
1962
1963 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1964
1965 /* Check PMC Register : 3.0001.2 == 1: read twice */
1966 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1967 MRVL88X2011_PMA_PMD_STATUS_1);
1968 if (err < 0)
1969 goto out;
1970
1971 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1972 MRVL88X2011_PMA_PMD_STATUS_1);
1973 if (err < 0)
1974 goto out;
1975
1976 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1977
1978 /* Check XGXS Register : 4.0018.[0-3,12] */
1979 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1980 MRVL88X2011_10G_XGXS_LANE_STAT);
1981 if (err < 0)
1982 goto out;
1983
1984 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1985 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1986 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1987 0x800))
1988 link_up = (pma_status && pcs_status) ? 1 : 0;
1989
1990 np->link_config.active_speed = SPEED_10000;
1991 np->link_config.active_duplex = DUPLEX_FULL;
1992 err = 0;
1993out:
1994 mrvl88x2011_act_led(np, (link_up ?
1995 MRVL88X2011_LED_CTL_PCS_ACT :
1996 MRVL88X2011_LED_CTL_OFF));
1997
1998 *link_up_p = link_up;
1999 return err;
2000}
2001
2002static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
2003{
2004 int err, link_up;
2005 link_up = 0;
2006
2007 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2008 BCM8704_PMD_RCV_SIGDET);
2009 if (err < 0 || err == 0xffff)
2010 goto out;
2011 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2012 err = 0;
2013 goto out;
2014 }
2015
2016 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2017 BCM8704_PCS_10G_R_STATUS);
2018 if (err < 0)
2019 goto out;
2020
2021 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2022 err = 0;
2023 goto out;
2024 }
2025
2026 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2027 BCM8704_PHYXS_XGXS_LANE_STAT);
2028 if (err < 0)
2029 goto out;
2030 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2031 PHYXS_XGXS_LANE_STAT_MAGIC |
2032 PHYXS_XGXS_LANE_STAT_PATTEST |
2033 PHYXS_XGXS_LANE_STAT_LANE3 |
2034 PHYXS_XGXS_LANE_STAT_LANE2 |
2035 PHYXS_XGXS_LANE_STAT_LANE1 |
2036 PHYXS_XGXS_LANE_STAT_LANE0)) {
2037 err = 0;
2038 np->link_config.active_speed = SPEED_INVALID;
2039 np->link_config.active_duplex = DUPLEX_INVALID;
2040 goto out;
2041 }
2042
2043 link_up = 1;
2044 np->link_config.active_speed = SPEED_10000;
2045 np->link_config.active_duplex = DUPLEX_FULL;
2046 err = 0;
2047
2048out:
2049 *link_up_p = link_up;
2050 return err;
2051}
2052
2053static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2054{
2055 int err, link_up;
2056
2057 link_up = 0;
2058
2059 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2060 BCM8704_PMD_RCV_SIGDET);
2061 if (err < 0)
2062 goto out;
2063 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2064 err = 0;
2065 goto out;
2066 }
2067
2068 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2069 BCM8704_PCS_10G_R_STATUS);
2070 if (err < 0)
2071 goto out;
2072 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2073 err = 0;
2074 goto out;
2075 }
2076
2077 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2078 BCM8704_PHYXS_XGXS_LANE_STAT);
2079 if (err < 0)
2080 goto out;
2081
2082 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2083 PHYXS_XGXS_LANE_STAT_MAGIC |
2084 PHYXS_XGXS_LANE_STAT_LANE3 |
2085 PHYXS_XGXS_LANE_STAT_LANE2 |
2086 PHYXS_XGXS_LANE_STAT_LANE1 |
2087 PHYXS_XGXS_LANE_STAT_LANE0)) {
2088 err = 0;
2089 goto out;
2090 }
2091
2092 link_up = 1;
2093 np->link_config.active_speed = SPEED_10000;
2094 np->link_config.active_duplex = DUPLEX_FULL;
2095 err = 0;
2096
2097out:
2098 *link_up_p = link_up;
2099 return err;
2100}
2101
2102static int link_status_10g(struct niu *np, int *link_up_p)
2103{
2104 unsigned long flags;
2105 int err = -EINVAL;
2106
2107 spin_lock_irqsave(&np->lock, flags);
2108
2109 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2110 int phy_id;
2111
2112 phy_id = phy_decode(np->parent->port_phy, np->port);
2113 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2114
2115 /* handle different phy types */
2116 switch (phy_id & NIU_PHY_ID_MASK) {
2117 case NIU_PHY_ID_MRVL88X2011:
2118 err = link_status_10g_mrvl(np, link_up_p);
2119 break;
2120
2121 default: /* bcom 8704 */
2122 err = link_status_10g_bcom(np, link_up_p);
2123 break;
2124 }
2125 }
2126
2127 spin_unlock_irqrestore(&np->lock, flags);
2128
2129 return err;
2130}
2131
2132static int niu_10g_phy_present(struct niu *np)
2133{
2134 u64 sig, mask, val;
2135
2136 sig = nr64(ESR_INT_SIGNALS);
2137 switch (np->port) {
2138 case 0:
2139 mask = ESR_INT_SIGNALS_P0_BITS;
2140 val = (ESR_INT_SRDY0_P0 |
2141 ESR_INT_DET0_P0 |
2142 ESR_INT_XSRDY_P0 |
2143 ESR_INT_XDP_P0_CH3 |
2144 ESR_INT_XDP_P0_CH2 |
2145 ESR_INT_XDP_P0_CH1 |
2146 ESR_INT_XDP_P0_CH0);
2147 break;
2148
2149 case 1:
2150 mask = ESR_INT_SIGNALS_P1_BITS;
2151 val = (ESR_INT_SRDY0_P1 |
2152 ESR_INT_DET0_P1 |
2153 ESR_INT_XSRDY_P1 |
2154 ESR_INT_XDP_P1_CH3 |
2155 ESR_INT_XDP_P1_CH2 |
2156 ESR_INT_XDP_P1_CH1 |
2157 ESR_INT_XDP_P1_CH0);
2158 break;
2159
2160 default:
2161 return 0;
2162 }
2163
2164 if ((sig & mask) != val)
2165 return 0;
2166 return 1;
2167}
2168
2169static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2170{
2171 unsigned long flags;
2172 int err = 0;
2173 int phy_present;
2174 int phy_present_prev;
2175
2176 spin_lock_irqsave(&np->lock, flags);
2177
2178 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2179 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2180 1 : 0;
2181 phy_present = niu_10g_phy_present(np);
2182 if (phy_present != phy_present_prev) {
2183 /* state change */
2184 if (phy_present) {
2185 /* A NEM was just plugged in */
2186 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2187 if (np->phy_ops->xcvr_init)
2188 err = np->phy_ops->xcvr_init(np);
2189 if (err) {
2190 err = mdio_read(np, np->phy_addr,
2191 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2192 if (err == 0xffff) {
2193 /* No mdio, back-to-back XAUI */
2194 goto out;
2195 }
2196 /* debounce */
2197 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2198 }
2199 } else {
2200 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2201 *link_up_p = 0;
2202 netif_warn(np, link, np->dev,
2203 "Hotplug PHY Removed\n");
2204 }
2205 }
2206out:
2207 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2208 err = link_status_10g_bcm8706(np, link_up_p);
2209 if (err == 0xffff) {
2210 /* No mdio, back-to-back XAUI: it is C10NEM */
2211 *link_up_p = 1;
2212 np->link_config.active_speed = SPEED_10000;
2213 np->link_config.active_duplex = DUPLEX_FULL;
2214 }
2215 }
2216 }
2217
2218 spin_unlock_irqrestore(&np->lock, flags);
2219
2220 return 0;
2221}
2222
2223static int niu_link_status(struct niu *np, int *link_up_p)
2224{
2225 const struct niu_phy_ops *ops = np->phy_ops;
2226 int err;
2227
2228 err = 0;
2229 if (ops->link_status)
2230 err = ops->link_status(np, link_up_p);
2231
2232 return err;
2233}
2234
2235static void niu_timer(unsigned long __opaque)
2236{
2237 struct niu *np = (struct niu *) __opaque;
2238 unsigned long off;
2239 int err, link_up;
2240
2241 err = niu_link_status(np, &link_up);
2242 if (!err)
2243 niu_link_status_common(np, link_up);
2244
2245 if (netif_carrier_ok(np->dev))
2246 off = 5 * HZ;
2247 else
2248 off = 1 * HZ;
2249 np->timer.expires = jiffies + off;
2250
2251 add_timer(&np->timer);
2252}
2253
2254static const struct niu_phy_ops phy_ops_10g_serdes = {
2255 .serdes_init = serdes_init_10g_serdes,
2256 .link_status = link_status_10g_serdes,
2257};
2258
2259static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2260 .serdes_init = serdes_init_niu_10g_serdes,
2261 .link_status = link_status_10g_serdes,
2262};
2263
2264static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2265 .serdes_init = serdes_init_niu_1g_serdes,
2266 .link_status = link_status_1g_serdes,
2267};
2268
2269static const struct niu_phy_ops phy_ops_1g_rgmii = {
2270 .xcvr_init = xcvr_init_1g_rgmii,
2271 .link_status = link_status_1g_rgmii,
2272};
2273
2274static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2275 .serdes_init = serdes_init_niu_10g_fiber,
2276 .xcvr_init = xcvr_init_10g,
2277 .link_status = link_status_10g,
2278};
2279
2280static const struct niu_phy_ops phy_ops_10g_fiber = {
2281 .serdes_init = serdes_init_10g,
2282 .xcvr_init = xcvr_init_10g,
2283 .link_status = link_status_10g,
2284};
2285
2286static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2287 .serdes_init = serdes_init_10g,
2288 .xcvr_init = xcvr_init_10g_bcm8706,
2289 .link_status = link_status_10g_hotplug,
2290};
2291
2292static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2293 .serdes_init = serdes_init_niu_10g_fiber,
2294 .xcvr_init = xcvr_init_10g_bcm8706,
2295 .link_status = link_status_10g_hotplug,
2296};
2297
2298static const struct niu_phy_ops phy_ops_10g_copper = {
2299 .serdes_init = serdes_init_10g,
2300 .link_status = link_status_10g, /* XXX */
2301};
2302
2303static const struct niu_phy_ops phy_ops_1g_fiber = {
2304 .serdes_init = serdes_init_1g,
2305 .xcvr_init = xcvr_init_1g,
2306 .link_status = link_status_1g,
2307};
2308
2309static const struct niu_phy_ops phy_ops_1g_copper = {
2310 .xcvr_init = xcvr_init_1g,
2311 .link_status = link_status_1g,
2312};
2313
2314struct niu_phy_template {
2315 const struct niu_phy_ops *ops;
2316 u32 phy_addr_base;
2317};
2318
2319static const struct niu_phy_template phy_template_niu_10g_fiber = {
2320 .ops = &phy_ops_10g_fiber_niu,
2321 .phy_addr_base = 16,
2322};
2323
2324static const struct niu_phy_template phy_template_niu_10g_serdes = {
2325 .ops = &phy_ops_10g_serdes_niu,
2326 .phy_addr_base = 0,
2327};
2328
2329static const struct niu_phy_template phy_template_niu_1g_serdes = {
2330 .ops = &phy_ops_1g_serdes_niu,
2331 .phy_addr_base = 0,
2332};
2333
2334static const struct niu_phy_template phy_template_10g_fiber = {
2335 .ops = &phy_ops_10g_fiber,
2336 .phy_addr_base = 8,
2337};
2338
2339static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2340 .ops = &phy_ops_10g_fiber_hotplug,
2341 .phy_addr_base = 8,
2342};
2343
2344static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2345 .ops = &phy_ops_niu_10g_hotplug,
2346 .phy_addr_base = 8,
2347};
2348
2349static const struct niu_phy_template phy_template_10g_copper = {
2350 .ops = &phy_ops_10g_copper,
2351 .phy_addr_base = 10,
2352};
2353
2354static const struct niu_phy_template phy_template_1g_fiber = {
2355 .ops = &phy_ops_1g_fiber,
2356 .phy_addr_base = 0,
2357};
2358
2359static const struct niu_phy_template phy_template_1g_copper = {
2360 .ops = &phy_ops_1g_copper,
2361 .phy_addr_base = 0,
2362};
2363
2364static const struct niu_phy_template phy_template_1g_rgmii = {
2365 .ops = &phy_ops_1g_rgmii,
2366 .phy_addr_base = 0,
2367};
2368
2369static const struct niu_phy_template phy_template_10g_serdes = {
2370 .ops = &phy_ops_10g_serdes,
2371 .phy_addr_base = 0,
2372};
2373
2374static int niu_atca_port_num[4] = {
2375 0, 0, 11, 10
2376};
2377
2378static int serdes_init_10g_serdes(struct niu *np)
2379{
2380 struct niu_link_config *lp = &np->link_config;
2381 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2382 u64 ctrl_val, test_cfg_val, sig, mask, val;
2383
2384 switch (np->port) {
2385 case 0:
2386 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2387 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2388 pll_cfg = ENET_SERDES_0_PLL_CFG;
2389 break;
2390 case 1:
2391 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2392 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2393 pll_cfg = ENET_SERDES_1_PLL_CFG;
2394 break;
2395
2396 default:
2397 return -EINVAL;
2398 }
2399 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2400 ENET_SERDES_CTRL_SDET_1 |
2401 ENET_SERDES_CTRL_SDET_2 |
2402 ENET_SERDES_CTRL_SDET_3 |
2403 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2404 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2405 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2406 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2407 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2408 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2409 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2410 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2411 test_cfg_val = 0;
2412
2413 if (lp->loopback_mode == LOOPBACK_PHY) {
2414 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2415 ENET_SERDES_TEST_MD_0_SHIFT) |
2416 (ENET_TEST_MD_PAD_LOOPBACK <<
2417 ENET_SERDES_TEST_MD_1_SHIFT) |
2418 (ENET_TEST_MD_PAD_LOOPBACK <<
2419 ENET_SERDES_TEST_MD_2_SHIFT) |
2420 (ENET_TEST_MD_PAD_LOOPBACK <<
2421 ENET_SERDES_TEST_MD_3_SHIFT));
2422 }
2423
2424 esr_reset(np);
2425 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2426 nw64(ctrl_reg, ctrl_val);
2427 nw64(test_cfg_reg, test_cfg_val);
2428
2429 /* Initialize all 4 lanes of the SERDES. */
2430 for (i = 0; i < 4; i++) {
2431 u32 rxtx_ctrl, glue0;
2432 int err;
2433
2434 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2435 if (err)
2436 return err;
2437 err = esr_read_glue0(np, i, &glue0);
2438 if (err)
2439 return err;
2440
2441 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2442 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2443 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2444
2445 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2446 ESR_GLUE_CTRL0_THCNT |
2447 ESR_GLUE_CTRL0_BLTIME);
2448 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2449 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2450 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2451 (BLTIME_300_CYCLES <<
2452 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2453
2454 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2455 if (err)
2456 return err;
2457 err = esr_write_glue0(np, i, glue0);
2458 if (err)
2459 return err;
2460 }
2461
2462
2463 sig = nr64(ESR_INT_SIGNALS);
2464 switch (np->port) {
2465 case 0:
2466 mask = ESR_INT_SIGNALS_P0_BITS;
2467 val = (ESR_INT_SRDY0_P0 |
2468 ESR_INT_DET0_P0 |
2469 ESR_INT_XSRDY_P0 |
2470 ESR_INT_XDP_P0_CH3 |
2471 ESR_INT_XDP_P0_CH2 |
2472 ESR_INT_XDP_P0_CH1 |
2473 ESR_INT_XDP_P0_CH0);
2474 break;
2475
2476 case 1:
2477 mask = ESR_INT_SIGNALS_P1_BITS;
2478 val = (ESR_INT_SRDY0_P1 |
2479 ESR_INT_DET0_P1 |
2480 ESR_INT_XSRDY_P1 |
2481 ESR_INT_XDP_P1_CH3 |
2482 ESR_INT_XDP_P1_CH2 |
2483 ESR_INT_XDP_P1_CH1 |
2484 ESR_INT_XDP_P1_CH0);
2485 break;
2486
2487 default:
2488 return -EINVAL;
2489 }
2490
2491 if ((sig & mask) != val) {
2492 int err;
2493 err = serdes_init_1g_serdes(np);
2494 if (!err) {
2495 np->flags &= ~NIU_FLAGS_10G;
2496 np->mac_xcvr = MAC_XCVR_PCS;
2497 } else {
2498 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2499 np->port);
2500 return -ENODEV;
2501 }
2502 }
2503
2504 return 0;
2505}
2506
2507static int niu_determine_phy_disposition(struct niu *np)
2508{
2509 struct niu_parent *parent = np->parent;
2510 u8 plat_type = parent->plat_type;
2511 const struct niu_phy_template *tp;
2512 u32 phy_addr_off = 0;
2513
2514 if (plat_type == PLAT_TYPE_NIU) {
2515 switch (np->flags &
2516 (NIU_FLAGS_10G |
2517 NIU_FLAGS_FIBER |
2518 NIU_FLAGS_XCVR_SERDES)) {
2519 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2520 /* 10G Serdes */
2521 tp = &phy_template_niu_10g_serdes;
2522 break;
2523 case NIU_FLAGS_XCVR_SERDES:
2524 /* 1G Serdes */
2525 tp = &phy_template_niu_1g_serdes;
2526 break;
2527 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2528 /* 10G Fiber */
2529 default:
2530 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2531 tp = &phy_template_niu_10g_hotplug;
2532 if (np->port == 0)
2533 phy_addr_off = 8;
2534 if (np->port == 1)
2535 phy_addr_off = 12;
2536 } else {
2537 tp = &phy_template_niu_10g_fiber;
2538 phy_addr_off += np->port;
2539 }
2540 break;
2541 }
2542 } else {
2543 switch (np->flags &
2544 (NIU_FLAGS_10G |
2545 NIU_FLAGS_FIBER |
2546 NIU_FLAGS_XCVR_SERDES)) {
2547 case 0:
2548 /* 1G copper */
2549 tp = &phy_template_1g_copper;
2550 if (plat_type == PLAT_TYPE_VF_P0)
2551 phy_addr_off = 10;
2552 else if (plat_type == PLAT_TYPE_VF_P1)
2553 phy_addr_off = 26;
2554
2555 phy_addr_off += (np->port ^ 0x3);
2556 break;
2557
2558 case NIU_FLAGS_10G:
2559 /* 10G copper */
2560 tp = &phy_template_10g_copper;
2561 break;
2562
2563 case NIU_FLAGS_FIBER:
2564 /* 1G fiber */
2565 tp = &phy_template_1g_fiber;
2566 break;
2567
2568 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2569 /* 10G fiber */
2570 tp = &phy_template_10g_fiber;
2571 if (plat_type == PLAT_TYPE_VF_P0 ||
2572 plat_type == PLAT_TYPE_VF_P1)
2573 phy_addr_off = 8;
2574 phy_addr_off += np->port;
2575 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2576 tp = &phy_template_10g_fiber_hotplug;
2577 if (np->port == 0)
2578 phy_addr_off = 8;
2579 if (np->port == 1)
2580 phy_addr_off = 12;
2581 }
2582 break;
2583
2584 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2585 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2586 case NIU_FLAGS_XCVR_SERDES:
2587 switch(np->port) {
2588 case 0:
2589 case 1:
2590 tp = &phy_template_10g_serdes;
2591 break;
2592 case 2:
2593 case 3:
2594 tp = &phy_template_1g_rgmii;
2595 break;
2596 default:
2597 return -EINVAL;
2598 break;
2599 }
2600 phy_addr_off = niu_atca_port_num[np->port];
2601 break;
2602
2603 default:
2604 return -EINVAL;
2605 }
2606 }
2607
2608 np->phy_ops = tp->ops;
2609 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2610
2611 return 0;
2612}
2613
2614static int niu_init_link(struct niu *np)
2615{
2616 struct niu_parent *parent = np->parent;
2617 int err, ignore;
2618
2619 if (parent->plat_type == PLAT_TYPE_NIU) {
2620 err = niu_xcvr_init(np);
2621 if (err)
2622 return err;
2623 msleep(200);
2624 }
2625 err = niu_serdes_init(np);
2626 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2627 return err;
2628 msleep(200);
2629 err = niu_xcvr_init(np);
2630 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2631 niu_link_status(np, &ignore);
2632 return 0;
2633}
2634
2635static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2636{
2637 u16 reg0 = addr[4] << 8 | addr[5];
2638 u16 reg1 = addr[2] << 8 | addr[3];
2639 u16 reg2 = addr[0] << 8 | addr[1];
2640
2641 if (np->flags & NIU_FLAGS_XMAC) {
2642 nw64_mac(XMAC_ADDR0, reg0);
2643 nw64_mac(XMAC_ADDR1, reg1);
2644 nw64_mac(XMAC_ADDR2, reg2);
2645 } else {
2646 nw64_mac(BMAC_ADDR0, reg0);
2647 nw64_mac(BMAC_ADDR1, reg1);
2648 nw64_mac(BMAC_ADDR2, reg2);
2649 }
2650}
2651
2652static int niu_num_alt_addr(struct niu *np)
2653{
2654 if (np->flags & NIU_FLAGS_XMAC)
2655 return XMAC_NUM_ALT_ADDR;
2656 else
2657 return BMAC_NUM_ALT_ADDR;
2658}
2659
2660static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2661{
2662 u16 reg0 = addr[4] << 8 | addr[5];
2663 u16 reg1 = addr[2] << 8 | addr[3];
2664 u16 reg2 = addr[0] << 8 | addr[1];
2665
2666 if (index >= niu_num_alt_addr(np))
2667 return -EINVAL;
2668
2669 if (np->flags & NIU_FLAGS_XMAC) {
2670 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2671 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2672 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2673 } else {
2674 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2675 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2676 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2677 }
2678
2679 return 0;
2680}
2681
2682static int niu_enable_alt_mac(struct niu *np, int index, int on)
2683{
2684 unsigned long reg;
2685 u64 val, mask;
2686
2687 if (index >= niu_num_alt_addr(np))
2688 return -EINVAL;
2689
2690 if (np->flags & NIU_FLAGS_XMAC) {
2691 reg = XMAC_ADDR_CMPEN;
2692 mask = 1 << index;
2693 } else {
2694 reg = BMAC_ADDR_CMPEN;
2695 mask = 1 << (index + 1);
2696 }
2697
2698 val = nr64_mac(reg);
2699 if (on)
2700 val |= mask;
2701 else
2702 val &= ~mask;
2703 nw64_mac(reg, val);
2704
2705 return 0;
2706}
2707
2708static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2709 int num, int mac_pref)
2710{
2711 u64 val = nr64_mac(reg);
2712 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2713 val |= num;
2714 if (mac_pref)
2715 val |= HOST_INFO_MPR;
2716 nw64_mac(reg, val);
2717}
2718
2719static int __set_rdc_table_num(struct niu *np,
2720 int xmac_index, int bmac_index,
2721 int rdc_table_num, int mac_pref)
2722{
2723 unsigned long reg;
2724
2725 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2726 return -EINVAL;
2727 if (np->flags & NIU_FLAGS_XMAC)
2728 reg = XMAC_HOST_INFO(xmac_index);
2729 else
2730 reg = BMAC_HOST_INFO(bmac_index);
2731 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2732 return 0;
2733}
2734
2735static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2736 int mac_pref)
2737{
2738 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2739}
2740
2741static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2742 int mac_pref)
2743{
2744 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2745}
2746
2747static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2748 int table_num, int mac_pref)
2749{
2750 if (idx >= niu_num_alt_addr(np))
2751 return -EINVAL;
2752 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2753}
2754
2755static u64 vlan_entry_set_parity(u64 reg_val)
2756{
2757 u64 port01_mask;
2758 u64 port23_mask;
2759
2760 port01_mask = 0x00ff;
2761 port23_mask = 0xff00;
2762
2763 if (hweight64(reg_val & port01_mask) & 1)
2764 reg_val |= ENET_VLAN_TBL_PARITY0;
2765 else
2766 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2767
2768 if (hweight64(reg_val & port23_mask) & 1)
2769 reg_val |= ENET_VLAN_TBL_PARITY1;
2770 else
2771 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2772
2773 return reg_val;
2774}
2775
2776static void vlan_tbl_write(struct niu *np, unsigned long index,
2777 int port, int vpr, int rdc_table)
2778{
2779 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2780
2781 reg_val &= ~((ENET_VLAN_TBL_VPR |
2782 ENET_VLAN_TBL_VLANRDCTBLN) <<
2783 ENET_VLAN_TBL_SHIFT(port));
2784 if (vpr)
2785 reg_val |= (ENET_VLAN_TBL_VPR <<
2786 ENET_VLAN_TBL_SHIFT(port));
2787 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2788
2789 reg_val = vlan_entry_set_parity(reg_val);
2790
2791 nw64(ENET_VLAN_TBL(index), reg_val);
2792}
2793
2794static void vlan_tbl_clear(struct niu *np)
2795{
2796 int i;
2797
2798 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2799 nw64(ENET_VLAN_TBL(i), 0);
2800}
2801
2802static int tcam_wait_bit(struct niu *np, u64 bit)
2803{
2804 int limit = 1000;
2805
2806 while (--limit > 0) {
2807 if (nr64(TCAM_CTL) & bit)
2808 break;
2809 udelay(1);
2810 }
2811 if (limit <= 0)
2812 return -ENODEV;
2813
2814 return 0;
2815}
2816
2817static int tcam_flush(struct niu *np, int index)
2818{
2819 nw64(TCAM_KEY_0, 0x00);
2820 nw64(TCAM_KEY_MASK_0, 0xff);
2821 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2822
2823 return tcam_wait_bit(np, TCAM_CTL_STAT);
2824}
2825
2826#if 0
2827static int tcam_read(struct niu *np, int index,
2828 u64 *key, u64 *mask)
2829{
2830 int err;
2831
2832 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2833 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2834 if (!err) {
2835 key[0] = nr64(TCAM_KEY_0);
2836 key[1] = nr64(TCAM_KEY_1);
2837 key[2] = nr64(TCAM_KEY_2);
2838 key[3] = nr64(TCAM_KEY_3);
2839 mask[0] = nr64(TCAM_KEY_MASK_0);
2840 mask[1] = nr64(TCAM_KEY_MASK_1);
2841 mask[2] = nr64(TCAM_KEY_MASK_2);
2842 mask[3] = nr64(TCAM_KEY_MASK_3);
2843 }
2844 return err;
2845}
2846#endif
2847
2848static int tcam_write(struct niu *np, int index,
2849 u64 *key, u64 *mask)
2850{
2851 nw64(TCAM_KEY_0, key[0]);
2852 nw64(TCAM_KEY_1, key[1]);
2853 nw64(TCAM_KEY_2, key[2]);
2854 nw64(TCAM_KEY_3, key[3]);
2855 nw64(TCAM_KEY_MASK_0, mask[0]);
2856 nw64(TCAM_KEY_MASK_1, mask[1]);
2857 nw64(TCAM_KEY_MASK_2, mask[2]);
2858 nw64(TCAM_KEY_MASK_3, mask[3]);
2859 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2860
2861 return tcam_wait_bit(np, TCAM_CTL_STAT);
2862}
2863
2864#if 0
2865static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2866{
2867 int err;
2868
2869 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2870 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2871 if (!err)
2872 *data = nr64(TCAM_KEY_1);
2873
2874 return err;
2875}
2876#endif
2877
2878static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2879{
2880 nw64(TCAM_KEY_1, assoc_data);
2881 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2882
2883 return tcam_wait_bit(np, TCAM_CTL_STAT);
2884}
2885
2886static void tcam_enable(struct niu *np, int on)
2887{
2888 u64 val = nr64(FFLP_CFG_1);
2889
2890 if (on)
2891 val &= ~FFLP_CFG_1_TCAM_DIS;
2892 else
2893 val |= FFLP_CFG_1_TCAM_DIS;
2894 nw64(FFLP_CFG_1, val);
2895}
2896
2897static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2898{
2899 u64 val = nr64(FFLP_CFG_1);
2900
2901 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2902 FFLP_CFG_1_CAMLAT |
2903 FFLP_CFG_1_CAMRATIO);
2904 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2905 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2906 nw64(FFLP_CFG_1, val);
2907
2908 val = nr64(FFLP_CFG_1);
2909 val |= FFLP_CFG_1_FFLPINITDONE;
2910 nw64(FFLP_CFG_1, val);
2911}
2912
2913static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2914 int on)
2915{
2916 unsigned long reg;
2917 u64 val;
2918
2919 if (class < CLASS_CODE_ETHERTYPE1 ||
2920 class > CLASS_CODE_ETHERTYPE2)
2921 return -EINVAL;
2922
2923 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2924 val = nr64(reg);
2925 if (on)
2926 val |= L2_CLS_VLD;
2927 else
2928 val &= ~L2_CLS_VLD;
2929 nw64(reg, val);
2930
2931 return 0;
2932}
2933
2934#if 0
2935static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2936 u64 ether_type)
2937{
2938 unsigned long reg;
2939 u64 val;
2940
2941 if (class < CLASS_CODE_ETHERTYPE1 ||
2942 class > CLASS_CODE_ETHERTYPE2 ||
2943 (ether_type & ~(u64)0xffff) != 0)
2944 return -EINVAL;
2945
2946 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2947 val = nr64(reg);
2948 val &= ~L2_CLS_ETYPE;
2949 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2950 nw64(reg, val);
2951
2952 return 0;
2953}
2954#endif
2955
2956static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2957 int on)
2958{
2959 unsigned long reg;
2960 u64 val;
2961
2962 if (class < CLASS_CODE_USER_PROG1 ||
2963 class > CLASS_CODE_USER_PROG4)
2964 return -EINVAL;
2965
2966 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2967 val = nr64(reg);
2968 if (on)
2969 val |= L3_CLS_VALID;
2970 else
2971 val &= ~L3_CLS_VALID;
2972 nw64(reg, val);
2973
2974 return 0;
2975}
2976
2977static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2978 int ipv6, u64 protocol_id,
2979 u64 tos_mask, u64 tos_val)
2980{
2981 unsigned long reg;
2982 u64 val;
2983
2984 if (class < CLASS_CODE_USER_PROG1 ||
2985 class > CLASS_CODE_USER_PROG4 ||
2986 (protocol_id & ~(u64)0xff) != 0 ||
2987 (tos_mask & ~(u64)0xff) != 0 ||
2988 (tos_val & ~(u64)0xff) != 0)
2989 return -EINVAL;
2990
2991 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2992 val = nr64(reg);
2993 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2994 L3_CLS_TOSMASK | L3_CLS_TOS);
2995 if (ipv6)
2996 val |= L3_CLS_IPVER;
2997 val |= (protocol_id << L3_CLS_PID_SHIFT);
2998 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2999 val |= (tos_val << L3_CLS_TOS_SHIFT);
3000 nw64(reg, val);
3001
3002 return 0;
3003}
3004
3005static int tcam_early_init(struct niu *np)
3006{
3007 unsigned long i;
3008 int err;
3009
3010 tcam_enable(np, 0);
3011 tcam_set_lat_and_ratio(np,
3012 DEFAULT_TCAM_LATENCY,
3013 DEFAULT_TCAM_ACCESS_RATIO);
3014 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3015 err = tcam_user_eth_class_enable(np, i, 0);
3016 if (err)
3017 return err;
3018 }
3019 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3020 err = tcam_user_ip_class_enable(np, i, 0);
3021 if (err)
3022 return err;
3023 }
3024
3025 return 0;
3026}
3027
3028static int tcam_flush_all(struct niu *np)
3029{
3030 unsigned long i;
3031
3032 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3033 int err = tcam_flush(np, i);
3034 if (err)
3035 return err;
3036 }
3037 return 0;
3038}
3039
3040static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3041{
3042 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3043}
3044
3045#if 0
3046static int hash_read(struct niu *np, unsigned long partition,
3047 unsigned long index, unsigned long num_entries,
3048 u64 *data)
3049{
3050 u64 val = hash_addr_regval(index, num_entries);
3051 unsigned long i;
3052
3053 if (partition >= FCRAM_NUM_PARTITIONS ||
3054 index + num_entries > FCRAM_SIZE)
3055 return -EINVAL;
3056
3057 nw64(HASH_TBL_ADDR(partition), val);
3058 for (i = 0; i < num_entries; i++)
3059 data[i] = nr64(HASH_TBL_DATA(partition));
3060
3061 return 0;
3062}
3063#endif
3064
3065static int hash_write(struct niu *np, unsigned long partition,
3066 unsigned long index, unsigned long num_entries,
3067 u64 *data)
3068{
3069 u64 val = hash_addr_regval(index, num_entries);
3070 unsigned long i;
3071
3072 if (partition >= FCRAM_NUM_PARTITIONS ||
3073 index + (num_entries * 8) > FCRAM_SIZE)
3074 return -EINVAL;
3075
3076 nw64(HASH_TBL_ADDR(partition), val);
3077 for (i = 0; i < num_entries; i++)
3078 nw64(HASH_TBL_DATA(partition), data[i]);
3079
3080 return 0;
3081}
3082
3083static void fflp_reset(struct niu *np)
3084{
3085 u64 val;
3086
3087 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3088 udelay(10);
3089 nw64(FFLP_CFG_1, 0);
3090
3091 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3092 nw64(FFLP_CFG_1, val);
3093}
3094
3095static void fflp_set_timings(struct niu *np)
3096{
3097 u64 val = nr64(FFLP_CFG_1);
3098
3099 val &= ~FFLP_CFG_1_FFLPINITDONE;
3100 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3101 nw64(FFLP_CFG_1, val);
3102
3103 val = nr64(FFLP_CFG_1);
3104 val |= FFLP_CFG_1_FFLPINITDONE;
3105 nw64(FFLP_CFG_1, val);
3106
3107 val = nr64(FCRAM_REF_TMR);
3108 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3109 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3110 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3111 nw64(FCRAM_REF_TMR, val);
3112}
3113
3114static int fflp_set_partition(struct niu *np, u64 partition,
3115 u64 mask, u64 base, int enable)
3116{
3117 unsigned long reg;
3118 u64 val;
3119
3120 if (partition >= FCRAM_NUM_PARTITIONS ||
3121 (mask & ~(u64)0x1f) != 0 ||
3122 (base & ~(u64)0x1f) != 0)
3123 return -EINVAL;
3124
3125 reg = FLW_PRT_SEL(partition);
3126
3127 val = nr64(reg);
3128 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3129 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3130 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3131 if (enable)
3132 val |= FLW_PRT_SEL_EXT;
3133 nw64(reg, val);
3134
3135 return 0;
3136}
3137
3138static int fflp_disable_all_partitions(struct niu *np)
3139{
3140 unsigned long i;
3141
3142 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3143 int err = fflp_set_partition(np, 0, 0, 0, 0);
3144 if (err)
3145 return err;
3146 }
3147 return 0;
3148}
3149
3150static void fflp_llcsnap_enable(struct niu *np, int on)
3151{
3152 u64 val = nr64(FFLP_CFG_1);
3153
3154 if (on)
3155 val |= FFLP_CFG_1_LLCSNAP;
3156 else
3157 val &= ~FFLP_CFG_1_LLCSNAP;
3158 nw64(FFLP_CFG_1, val);
3159}
3160
3161static void fflp_errors_enable(struct niu *np, int on)
3162{
3163 u64 val = nr64(FFLP_CFG_1);
3164
3165 if (on)
3166 val &= ~FFLP_CFG_1_ERRORDIS;
3167 else
3168 val |= FFLP_CFG_1_ERRORDIS;
3169 nw64(FFLP_CFG_1, val);
3170}
3171
3172static int fflp_hash_clear(struct niu *np)
3173{
3174 struct fcram_hash_ipv4 ent;
3175 unsigned long i;
3176
3177 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3178 memset(&ent, 0, sizeof(ent));
3179 ent.header = HASH_HEADER_EXT;
3180
3181 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3182 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3183 if (err)
3184 return err;
3185 }
3186 return 0;
3187}
3188
3189static int fflp_early_init(struct niu *np)
3190{
3191 struct niu_parent *parent;
3192 unsigned long flags;
3193 int err;
3194
3195 niu_lock_parent(np, flags);
3196
3197 parent = np->parent;
3198 err = 0;
3199 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3200 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3201 fflp_reset(np);
3202 fflp_set_timings(np);
3203 err = fflp_disable_all_partitions(np);
3204 if (err) {
3205 netif_printk(np, probe, KERN_DEBUG, np->dev,
3206 "fflp_disable_all_partitions failed, err=%d\n",
3207 err);
3208 goto out;
3209 }
3210 }
3211
3212 err = tcam_early_init(np);
3213 if (err) {
3214 netif_printk(np, probe, KERN_DEBUG, np->dev,
3215 "tcam_early_init failed, err=%d\n", err);
3216 goto out;
3217 }
3218 fflp_llcsnap_enable(np, 1);
3219 fflp_errors_enable(np, 0);
3220 nw64(H1POLY, 0);
3221 nw64(H2POLY, 0);
3222
3223 err = tcam_flush_all(np);
3224 if (err) {
3225 netif_printk(np, probe, KERN_DEBUG, np->dev,
3226 "tcam_flush_all failed, err=%d\n", err);
3227 goto out;
3228 }
3229 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3230 err = fflp_hash_clear(np);
3231 if (err) {
3232 netif_printk(np, probe, KERN_DEBUG, np->dev,
3233 "fflp_hash_clear failed, err=%d\n",
3234 err);
3235 goto out;
3236 }
3237 }
3238
3239 vlan_tbl_clear(np);
3240
3241 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3242 }
3243out:
3244 niu_unlock_parent(np, flags);
3245 return err;
3246}
3247
3248static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3249{
3250 if (class_code < CLASS_CODE_USER_PROG1 ||
3251 class_code > CLASS_CODE_SCTP_IPV6)
3252 return -EINVAL;
3253
3254 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3255 return 0;
3256}
3257
3258static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3259{
3260 if (class_code < CLASS_CODE_USER_PROG1 ||
3261 class_code > CLASS_CODE_SCTP_IPV6)
3262 return -EINVAL;
3263
3264 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3265 return 0;
3266}
3267
3268/* Entries for the ports are interleaved in the TCAM */
3269static u16 tcam_get_index(struct niu *np, u16 idx)
3270{
3271 /* One entry reserved for IP fragment rule */
3272 if (idx >= (np->clas.tcam_sz - 1))
3273 idx = 0;
3274 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3275}
3276
3277static u16 tcam_get_size(struct niu *np)
3278{
3279 /* One entry reserved for IP fragment rule */
3280 return np->clas.tcam_sz - 1;
3281}
3282
3283static u16 tcam_get_valid_entry_cnt(struct niu *np)
3284{
3285 /* One entry reserved for IP fragment rule */
3286 return np->clas.tcam_valid_entries - 1;
3287}
3288
3289static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3290 u32 offset, u32 size, u32 truesize)
3291{
3292 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3293
3294 skb->len += size;
3295 skb->data_len += size;
3296 skb->truesize += truesize;
3297}
3298
3299static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3300{
3301 a >>= PAGE_SHIFT;
3302 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3303
3304 return a & (MAX_RBR_RING_SIZE - 1);
3305}
3306
3307static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3308 struct page ***link)
3309{
3310 unsigned int h = niu_hash_rxaddr(rp, addr);
3311 struct page *p, **pp;
3312
3313 addr &= PAGE_MASK;
3314 pp = &rp->rxhash[h];
3315 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3316 if (p->index == addr) {
3317 *link = pp;
3318 goto found;
3319 }
3320 }
3321 BUG();
3322
3323found:
3324 return p;
3325}
3326
3327static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3328{
3329 unsigned int h = niu_hash_rxaddr(rp, base);
3330
3331 page->index = base;
3332 page->mapping = (struct address_space *) rp->rxhash[h];
3333 rp->rxhash[h] = page;
3334}
3335
3336static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3337 gfp_t mask, int start_index)
3338{
3339 struct page *page;
3340 u64 addr;
3341 int i;
3342
3343 page = alloc_page(mask);
3344 if (!page)
3345 return -ENOMEM;
3346
3347 addr = np->ops->map_page(np->device, page, 0,
3348 PAGE_SIZE, DMA_FROM_DEVICE);
3349
3350 niu_hash_page(rp, page, addr);
3351 if (rp->rbr_blocks_per_page > 1)
3352 atomic_add(rp->rbr_blocks_per_page - 1,
3353 &compound_head(page)->_count);
3354
3355 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3356 __le32 *rbr = &rp->rbr[start_index + i];
3357
3358 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3359 addr += rp->rbr_block_size;
3360 }
3361
3362 return 0;
3363}
3364
3365static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3366{
3367 int index = rp->rbr_index;
3368
3369 rp->rbr_pending++;
3370 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3371 int err = niu_rbr_add_page(np, rp, mask, index);
3372
3373 if (unlikely(err)) {
3374 rp->rbr_pending--;
3375 return;
3376 }
3377
3378 rp->rbr_index += rp->rbr_blocks_per_page;
3379 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3380 if (rp->rbr_index == rp->rbr_table_size)
3381 rp->rbr_index = 0;
3382
3383 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3384 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3385 rp->rbr_pending = 0;
3386 }
3387 }
3388}
3389
3390static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3391{
3392 unsigned int index = rp->rcr_index;
3393 int num_rcr = 0;
3394
3395 rp->rx_dropped++;
3396 while (1) {
3397 struct page *page, **link;
3398 u64 addr, val;
3399 u32 rcr_size;
3400
3401 num_rcr++;
3402
3403 val = le64_to_cpup(&rp->rcr[index]);
3404 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3405 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3406 page = niu_find_rxpage(rp, addr, &link);
3407
3408 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3409 RCR_ENTRY_PKTBUFSZ_SHIFT];
3410 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3411 *link = (struct page *) page->mapping;
3412 np->ops->unmap_page(np->device, page->index,
3413 PAGE_SIZE, DMA_FROM_DEVICE);
3414 page->index = 0;
3415 page->mapping = NULL;
3416 __free_page(page);
3417 rp->rbr_refill_pending++;
3418 }
3419
3420 index = NEXT_RCR(rp, index);
3421 if (!(val & RCR_ENTRY_MULTI))
3422 break;
3423
3424 }
3425 rp->rcr_index = index;
3426
3427 return num_rcr;
3428}
3429
3430static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3431 struct rx_ring_info *rp)
3432{
3433 unsigned int index = rp->rcr_index;
3434 struct rx_pkt_hdr1 *rh;
3435 struct sk_buff *skb;
3436 int len, num_rcr;
3437
3438 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3439 if (unlikely(!skb))
3440 return niu_rx_pkt_ignore(np, rp);
3441
3442 num_rcr = 0;
3443 while (1) {
3444 struct page *page, **link;
3445 u32 rcr_size, append_size;
3446 u64 addr, val, off;
3447
3448 num_rcr++;
3449
3450 val = le64_to_cpup(&rp->rcr[index]);
3451
3452 len = (val & RCR_ENTRY_L2_LEN) >>
3453 RCR_ENTRY_L2_LEN_SHIFT;
3454 len -= ETH_FCS_LEN;
3455
3456 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3457 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3458 page = niu_find_rxpage(rp, addr, &link);
3459
3460 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3461 RCR_ENTRY_PKTBUFSZ_SHIFT];
3462
3463 off = addr & ~PAGE_MASK;
3464 append_size = rcr_size;
3465 if (num_rcr == 1) {
3466 int ptype;
3467
3468 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3469 if ((ptype == RCR_PKT_TYPE_TCP ||
3470 ptype == RCR_PKT_TYPE_UDP) &&
3471 !(val & (RCR_ENTRY_NOPORT |
3472 RCR_ENTRY_ERROR)))
3473 skb->ip_summed = CHECKSUM_UNNECESSARY;
3474 else
3475 skb_checksum_none_assert(skb);
3476 } else if (!(val & RCR_ENTRY_MULTI))
3477 append_size = len - skb->len;
3478
3479 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3480 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3481 *link = (struct page *) page->mapping;
3482 np->ops->unmap_page(np->device, page->index,
3483 PAGE_SIZE, DMA_FROM_DEVICE);
3484 page->index = 0;
3485 page->mapping = NULL;
3486 rp->rbr_refill_pending++;
3487 } else
3488 get_page(page);
3489
3490 index = NEXT_RCR(rp, index);
3491 if (!(val & RCR_ENTRY_MULTI))
3492 break;
3493
3494 }
3495 rp->rcr_index = index;
3496
3497 len += sizeof(*rh);
3498 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3499 __pskb_pull_tail(skb, len);
3500
3501 rh = (struct rx_pkt_hdr1 *) skb->data;
3502 if (np->dev->features & NETIF_F_RXHASH)
3503 skb->rxhash = ((u32)rh->hashval2_0 << 24 |
3504 (u32)rh->hashval2_1 << 16 |
3505 (u32)rh->hashval1_1 << 8 |
3506 (u32)rh->hashval1_2 << 0);
3507 skb_pull(skb, sizeof(*rh));
3508
3509 rp->rx_packets++;
3510 rp->rx_bytes += skb->len;
3511
3512 skb->protocol = eth_type_trans(skb, np->dev);
3513 skb_record_rx_queue(skb, rp->rx_channel);
3514 napi_gro_receive(napi, skb);
3515
3516 return num_rcr;
3517}
3518
3519static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3520{
3521 int blocks_per_page = rp->rbr_blocks_per_page;
3522 int err, index = rp->rbr_index;
3523
3524 err = 0;
3525 while (index < (rp->rbr_table_size - blocks_per_page)) {
3526 err = niu_rbr_add_page(np, rp, mask, index);
3527 if (err)
3528 break;
3529
3530 index += blocks_per_page;
3531 }
3532
3533 rp->rbr_index = index;
3534 return err;
3535}
3536
3537static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3538{
3539 int i;
3540
3541 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3542 struct page *page;
3543
3544 page = rp->rxhash[i];
3545 while (page) {
3546 struct page *next = (struct page *) page->mapping;
3547 u64 base = page->index;
3548
3549 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3550 DMA_FROM_DEVICE);
3551 page->index = 0;
3552 page->mapping = NULL;
3553
3554 __free_page(page);
3555
3556 page = next;
3557 }
3558 }
3559
3560 for (i = 0; i < rp->rbr_table_size; i++)
3561 rp->rbr[i] = cpu_to_le32(0);
3562 rp->rbr_index = 0;
3563}
3564
3565static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3566{
3567 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3568 struct sk_buff *skb = tb->skb;
3569 struct tx_pkt_hdr *tp;
3570 u64 tx_flags;
3571 int i, len;
3572
3573 tp = (struct tx_pkt_hdr *) skb->data;
3574 tx_flags = le64_to_cpup(&tp->flags);
3575
3576 rp->tx_packets++;
3577 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3578 ((tx_flags & TXHDR_PAD) / 2));
3579
3580 len = skb_headlen(skb);
3581 np->ops->unmap_single(np->device, tb->mapping,
3582 len, DMA_TO_DEVICE);
3583
3584 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3585 rp->mark_pending--;
3586
3587 tb->skb = NULL;
3588 do {
3589 idx = NEXT_TX(rp, idx);
3590 len -= MAX_TX_DESC_LEN;
3591 } while (len > 0);
3592
3593 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3594 tb = &rp->tx_buffs[idx];
3595 BUG_ON(tb->skb != NULL);
3596 np->ops->unmap_page(np->device, tb->mapping,
3597 skb_frag_size(&skb_shinfo(skb)->frags[i]),
3598 DMA_TO_DEVICE);
3599 idx = NEXT_TX(rp, idx);
3600 }
3601
3602 dev_kfree_skb(skb);
3603
3604 return idx;
3605}
3606
3607#define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3608
3609static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3610{
3611 struct netdev_queue *txq;
3612 u16 pkt_cnt, tmp;
3613 int cons, index;
3614 u64 cs;
3615
3616 index = (rp - np->tx_rings);
3617 txq = netdev_get_tx_queue(np->dev, index);
3618
3619 cs = rp->tx_cs;
3620 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3621 goto out;
3622
3623 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3624 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3625 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3626
3627 rp->last_pkt_cnt = tmp;
3628
3629 cons = rp->cons;
3630
3631 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3632 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3633
3634 while (pkt_cnt--)
3635 cons = release_tx_packet(np, rp, cons);
3636
3637 rp->cons = cons;
3638 smp_mb();
3639
3640out:
3641 if (unlikely(netif_tx_queue_stopped(txq) &&
3642 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3643 __netif_tx_lock(txq, smp_processor_id());
3644 if (netif_tx_queue_stopped(txq) &&
3645 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3646 netif_tx_wake_queue(txq);
3647 __netif_tx_unlock(txq);
3648 }
3649}
3650
3651static inline void niu_sync_rx_discard_stats(struct niu *np,
3652 struct rx_ring_info *rp,
3653 const int limit)
3654{
3655 /* This elaborate scheme is needed for reading the RX discard
3656 * counters, as they are only 16-bit and can overflow quickly,
3657 * and because the overflow indication bit is not usable as
3658 * the counter value does not wrap, but remains at max value
3659 * 0xFFFF.
3660 *
3661 * In theory and in practice counters can be lost in between
3662 * reading nr64() and clearing the counter nw64(). For this
3663 * reason, the number of counter clearings nw64() is
3664 * limited/reduced though the limit parameter.
3665 */
3666 int rx_channel = rp->rx_channel;
3667 u32 misc, wred;
3668
3669 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3670 * following discard events: IPP (Input Port Process),
3671 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3672 * Block Ring) prefetch buffer is empty.
3673 */
3674 misc = nr64(RXMISC(rx_channel));
3675 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3676 nw64(RXMISC(rx_channel), 0);
3677 rp->rx_errors += misc & RXMISC_COUNT;
3678
3679 if (unlikely(misc & RXMISC_OFLOW))
3680 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3681 rx_channel);
3682
3683 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3684 "rx-%d: MISC drop=%u over=%u\n",
3685 rx_channel, misc, misc-limit);
3686 }
3687
3688 /* WRED (Weighted Random Early Discard) by hardware */
3689 wred = nr64(RED_DIS_CNT(rx_channel));
3690 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3691 nw64(RED_DIS_CNT(rx_channel), 0);
3692 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3693
3694 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3695 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3696
3697 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3698 "rx-%d: WRED drop=%u over=%u\n",
3699 rx_channel, wred, wred-limit);
3700 }
3701}
3702
3703static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3704 struct rx_ring_info *rp, int budget)
3705{
3706 int qlen, rcr_done = 0, work_done = 0;
3707 struct rxdma_mailbox *mbox = rp->mbox;
3708 u64 stat;
3709
3710#if 1
3711 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3712 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3713#else
3714 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3715 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3716#endif
3717 mbox->rx_dma_ctl_stat = 0;
3718 mbox->rcrstat_a = 0;
3719
3720 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3721 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3722 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3723
3724 rcr_done = work_done = 0;
3725 qlen = min(qlen, budget);
3726 while (work_done < qlen) {
3727 rcr_done += niu_process_rx_pkt(napi, np, rp);
3728 work_done++;
3729 }
3730
3731 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3732 unsigned int i;
3733
3734 for (i = 0; i < rp->rbr_refill_pending; i++)
3735 niu_rbr_refill(np, rp, GFP_ATOMIC);
3736 rp->rbr_refill_pending = 0;
3737 }
3738
3739 stat = (RX_DMA_CTL_STAT_MEX |
3740 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3741 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3742
3743 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3744
3745 /* Only sync discards stats when qlen indicate potential for drops */
3746 if (qlen > 10)
3747 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3748
3749 return work_done;
3750}
3751
3752static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3753{
3754 u64 v0 = lp->v0;
3755 u32 tx_vec = (v0 >> 32);
3756 u32 rx_vec = (v0 & 0xffffffff);
3757 int i, work_done = 0;
3758
3759 netif_printk(np, intr, KERN_DEBUG, np->dev,
3760 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3761
3762 for (i = 0; i < np->num_tx_rings; i++) {
3763 struct tx_ring_info *rp = &np->tx_rings[i];
3764 if (tx_vec & (1 << rp->tx_channel))
3765 niu_tx_work(np, rp);
3766 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3767 }
3768
3769 for (i = 0; i < np->num_rx_rings; i++) {
3770 struct rx_ring_info *rp = &np->rx_rings[i];
3771
3772 if (rx_vec & (1 << rp->rx_channel)) {
3773 int this_work_done;
3774
3775 this_work_done = niu_rx_work(&lp->napi, np, rp,
3776 budget);
3777
3778 budget -= this_work_done;
3779 work_done += this_work_done;
3780 }
3781 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3782 }
3783
3784 return work_done;
3785}
3786
3787static int niu_poll(struct napi_struct *napi, int budget)
3788{
3789 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3790 struct niu *np = lp->np;
3791 int work_done;
3792
3793 work_done = niu_poll_core(np, lp, budget);
3794
3795 if (work_done < budget) {
3796 napi_complete(napi);
3797 niu_ldg_rearm(np, lp, 1);
3798 }
3799 return work_done;
3800}
3801
3802static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3803 u64 stat)
3804{
3805 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3806
3807 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3808 pr_cont("RBR_TMOUT ");
3809 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3810 pr_cont("RSP_CNT ");
3811 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3812 pr_cont("BYTE_EN_BUS ");
3813 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3814 pr_cont("RSP_DAT ");
3815 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3816 pr_cont("RCR_ACK ");
3817 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3818 pr_cont("RCR_SHA_PAR ");
3819 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3820 pr_cont("RBR_PRE_PAR ");
3821 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3822 pr_cont("CONFIG ");
3823 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3824 pr_cont("RCRINCON ");
3825 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3826 pr_cont("RCRFULL ");
3827 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3828 pr_cont("RBRFULL ");
3829 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3830 pr_cont("RBRLOGPAGE ");
3831 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3832 pr_cont("CFIGLOGPAGE ");
3833 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3834 pr_cont("DC_FIDO ");
3835
3836 pr_cont(")\n");
3837}
3838
3839static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3840{
3841 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3842 int err = 0;
3843
3844
3845 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3846 RX_DMA_CTL_STAT_PORT_FATAL))
3847 err = -EINVAL;
3848
3849 if (err) {
3850 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3851 rp->rx_channel,
3852 (unsigned long long) stat);
3853
3854 niu_log_rxchan_errors(np, rp, stat);
3855 }
3856
3857 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3858 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3859
3860 return err;
3861}
3862
3863static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3864 u64 cs)
3865{
3866 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3867
3868 if (cs & TX_CS_MBOX_ERR)
3869 pr_cont("MBOX ");
3870 if (cs & TX_CS_PKT_SIZE_ERR)
3871 pr_cont("PKT_SIZE ");
3872 if (cs & TX_CS_TX_RING_OFLOW)
3873 pr_cont("TX_RING_OFLOW ");
3874 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3875 pr_cont("PREF_BUF_PAR ");
3876 if (cs & TX_CS_NACK_PREF)
3877 pr_cont("NACK_PREF ");
3878 if (cs & TX_CS_NACK_PKT_RD)
3879 pr_cont("NACK_PKT_RD ");
3880 if (cs & TX_CS_CONF_PART_ERR)
3881 pr_cont("CONF_PART ");
3882 if (cs & TX_CS_PKT_PRT_ERR)
3883 pr_cont("PKT_PTR ");
3884
3885 pr_cont(")\n");
3886}
3887
3888static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3889{
3890 u64 cs, logh, logl;
3891
3892 cs = nr64(TX_CS(rp->tx_channel));
3893 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3894 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3895
3896 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3897 rp->tx_channel,
3898 (unsigned long long)cs,
3899 (unsigned long long)logh,
3900 (unsigned long long)logl);
3901
3902 niu_log_txchan_errors(np, rp, cs);
3903
3904 return -ENODEV;
3905}
3906
3907static int niu_mif_interrupt(struct niu *np)
3908{
3909 u64 mif_status = nr64(MIF_STATUS);
3910 int phy_mdint = 0;
3911
3912 if (np->flags & NIU_FLAGS_XMAC) {
3913 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3914
3915 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3916 phy_mdint = 1;
3917 }
3918
3919 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3920 (unsigned long long)mif_status, phy_mdint);
3921
3922 return -ENODEV;
3923}
3924
3925static void niu_xmac_interrupt(struct niu *np)
3926{
3927 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3928 u64 val;
3929
3930 val = nr64_mac(XTXMAC_STATUS);
3931 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3932 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3933 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3934 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3935 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3936 mp->tx_fifo_errors++;
3937 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3938 mp->tx_overflow_errors++;
3939 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3940 mp->tx_max_pkt_size_errors++;
3941 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3942 mp->tx_underflow_errors++;
3943
3944 val = nr64_mac(XRXMAC_STATUS);
3945 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3946 mp->rx_local_faults++;
3947 if (val & XRXMAC_STATUS_RFLT_DET)
3948 mp->rx_remote_faults++;
3949 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3950 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3951 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3952 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3953 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3954 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3955 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3956 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3957 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3958 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3959 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3960 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3961 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3962 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3963 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3964 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3965 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3966 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3967 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3968 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3969 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3970 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3971 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3972 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3973 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3974 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3975 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3976 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3977 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3978 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3979 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3980 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3981 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3982 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3983 if (val & XRXMAC_STATUS_RXUFLOW)
3984 mp->rx_underflows++;
3985 if (val & XRXMAC_STATUS_RXOFLOW)
3986 mp->rx_overflows++;
3987
3988 val = nr64_mac(XMAC_FC_STAT);
3989 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3990 mp->pause_off_state++;
3991 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3992 mp->pause_on_state++;
3993 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3994 mp->pause_received++;
3995}
3996
3997static void niu_bmac_interrupt(struct niu *np)
3998{
3999 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4000 u64 val;
4001
4002 val = nr64_mac(BTXMAC_STATUS);
4003 if (val & BTXMAC_STATUS_UNDERRUN)
4004 mp->tx_underflow_errors++;
4005 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
4006 mp->tx_max_pkt_size_errors++;
4007 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4008 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4009 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4010 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4011
4012 val = nr64_mac(BRXMAC_STATUS);
4013 if (val & BRXMAC_STATUS_OVERFLOW)
4014 mp->rx_overflows++;
4015 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4016 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4017 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4018 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4019 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4020 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4021 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4022 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4023
4024 val = nr64_mac(BMAC_CTRL_STATUS);
4025 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4026 mp->pause_off_state++;
4027 if (val & BMAC_CTRL_STATUS_PAUSE)
4028 mp->pause_on_state++;
4029 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4030 mp->pause_received++;
4031}
4032
4033static int niu_mac_interrupt(struct niu *np)
4034{
4035 if (np->flags & NIU_FLAGS_XMAC)
4036 niu_xmac_interrupt(np);
4037 else
4038 niu_bmac_interrupt(np);
4039
4040 return 0;
4041}
4042
4043static void niu_log_device_error(struct niu *np, u64 stat)
4044{
4045 netdev_err(np->dev, "Core device errors ( ");
4046
4047 if (stat & SYS_ERR_MASK_META2)
4048 pr_cont("META2 ");
4049 if (stat & SYS_ERR_MASK_META1)
4050 pr_cont("META1 ");
4051 if (stat & SYS_ERR_MASK_PEU)
4052 pr_cont("PEU ");
4053 if (stat & SYS_ERR_MASK_TXC)
4054 pr_cont("TXC ");
4055 if (stat & SYS_ERR_MASK_RDMC)
4056 pr_cont("RDMC ");
4057 if (stat & SYS_ERR_MASK_TDMC)
4058 pr_cont("TDMC ");
4059 if (stat & SYS_ERR_MASK_ZCP)
4060 pr_cont("ZCP ");
4061 if (stat & SYS_ERR_MASK_FFLP)
4062 pr_cont("FFLP ");
4063 if (stat & SYS_ERR_MASK_IPP)
4064 pr_cont("IPP ");
4065 if (stat & SYS_ERR_MASK_MAC)
4066 pr_cont("MAC ");
4067 if (stat & SYS_ERR_MASK_SMX)
4068 pr_cont("SMX ");
4069
4070 pr_cont(")\n");
4071}
4072
4073static int niu_device_error(struct niu *np)
4074{
4075 u64 stat = nr64(SYS_ERR_STAT);
4076
4077 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4078 (unsigned long long)stat);
4079
4080 niu_log_device_error(np, stat);
4081
4082 return -ENODEV;
4083}
4084
4085static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4086 u64 v0, u64 v1, u64 v2)
4087{
4088
4089 int i, err = 0;
4090
4091 lp->v0 = v0;
4092 lp->v1 = v1;
4093 lp->v2 = v2;
4094
4095 if (v1 & 0x00000000ffffffffULL) {
4096 u32 rx_vec = (v1 & 0xffffffff);
4097
4098 for (i = 0; i < np->num_rx_rings; i++) {
4099 struct rx_ring_info *rp = &np->rx_rings[i];
4100
4101 if (rx_vec & (1 << rp->rx_channel)) {
4102 int r = niu_rx_error(np, rp);
4103 if (r) {
4104 err = r;
4105 } else {
4106 if (!v0)
4107 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4108 RX_DMA_CTL_STAT_MEX);
4109 }
4110 }
4111 }
4112 }
4113 if (v1 & 0x7fffffff00000000ULL) {
4114 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4115
4116 for (i = 0; i < np->num_tx_rings; i++) {
4117 struct tx_ring_info *rp = &np->tx_rings[i];
4118
4119 if (tx_vec & (1 << rp->tx_channel)) {
4120 int r = niu_tx_error(np, rp);
4121 if (r)
4122 err = r;
4123 }
4124 }
4125 }
4126 if ((v0 | v1) & 0x8000000000000000ULL) {
4127 int r = niu_mif_interrupt(np);
4128 if (r)
4129 err = r;
4130 }
4131 if (v2) {
4132 if (v2 & 0x01ef) {
4133 int r = niu_mac_interrupt(np);
4134 if (r)
4135 err = r;
4136 }
4137 if (v2 & 0x0210) {
4138 int r = niu_device_error(np);
4139 if (r)
4140 err = r;
4141 }
4142 }
4143
4144 if (err)
4145 niu_enable_interrupts(np, 0);
4146
4147 return err;
4148}
4149
4150static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4151 int ldn)
4152{
4153 struct rxdma_mailbox *mbox = rp->mbox;
4154 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4155
4156 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4157 RX_DMA_CTL_STAT_RCRTO);
4158 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4159
4160 netif_printk(np, intr, KERN_DEBUG, np->dev,
4161 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4162}
4163
4164static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4165 int ldn)
4166{
4167 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4168
4169 netif_printk(np, intr, KERN_DEBUG, np->dev,
4170 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4171}
4172
4173static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4174{
4175 struct niu_parent *parent = np->parent;
4176 u32 rx_vec, tx_vec;
4177 int i;
4178
4179 tx_vec = (v0 >> 32);
4180 rx_vec = (v0 & 0xffffffff);
4181
4182 for (i = 0; i < np->num_rx_rings; i++) {
4183 struct rx_ring_info *rp = &np->rx_rings[i];
4184 int ldn = LDN_RXDMA(rp->rx_channel);
4185
4186 if (parent->ldg_map[ldn] != ldg)
4187 continue;
4188
4189 nw64(LD_IM0(ldn), LD_IM0_MASK);
4190 if (rx_vec & (1 << rp->rx_channel))
4191 niu_rxchan_intr(np, rp, ldn);
4192 }
4193
4194 for (i = 0; i < np->num_tx_rings; i++) {
4195 struct tx_ring_info *rp = &np->tx_rings[i];
4196 int ldn = LDN_TXDMA(rp->tx_channel);
4197
4198 if (parent->ldg_map[ldn] != ldg)
4199 continue;
4200
4201 nw64(LD_IM0(ldn), LD_IM0_MASK);
4202 if (tx_vec & (1 << rp->tx_channel))
4203 niu_txchan_intr(np, rp, ldn);
4204 }
4205}
4206
4207static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4208 u64 v0, u64 v1, u64 v2)
4209{
4210 if (likely(napi_schedule_prep(&lp->napi))) {
4211 lp->v0 = v0;
4212 lp->v1 = v1;
4213 lp->v2 = v2;
4214 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4215 __napi_schedule(&lp->napi);
4216 }
4217}
4218
4219static irqreturn_t niu_interrupt(int irq, void *dev_id)
4220{
4221 struct niu_ldg *lp = dev_id;
4222 struct niu *np = lp->np;
4223 int ldg = lp->ldg_num;
4224 unsigned long flags;
4225 u64 v0, v1, v2;
4226
4227 if (netif_msg_intr(np))
4228 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4229 __func__, lp, ldg);
4230
4231 spin_lock_irqsave(&np->lock, flags);
4232
4233 v0 = nr64(LDSV0(ldg));
4234 v1 = nr64(LDSV1(ldg));
4235 v2 = nr64(LDSV2(ldg));
4236
4237 if (netif_msg_intr(np))
4238 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4239 (unsigned long long) v0,
4240 (unsigned long long) v1,
4241 (unsigned long long) v2);
4242
4243 if (unlikely(!v0 && !v1 && !v2)) {
4244 spin_unlock_irqrestore(&np->lock, flags);
4245 return IRQ_NONE;
4246 }
4247
4248 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4249 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4250 if (err)
4251 goto out;
4252 }
4253 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4254 niu_schedule_napi(np, lp, v0, v1, v2);
4255 else
4256 niu_ldg_rearm(np, lp, 1);
4257out:
4258 spin_unlock_irqrestore(&np->lock, flags);
4259
4260 return IRQ_HANDLED;
4261}
4262
4263static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4264{
4265 if (rp->mbox) {
4266 np->ops->free_coherent(np->device,
4267 sizeof(struct rxdma_mailbox),
4268 rp->mbox, rp->mbox_dma);
4269 rp->mbox = NULL;
4270 }
4271 if (rp->rcr) {
4272 np->ops->free_coherent(np->device,
4273 MAX_RCR_RING_SIZE * sizeof(__le64),
4274 rp->rcr, rp->rcr_dma);
4275 rp->rcr = NULL;
4276 rp->rcr_table_size = 0;
4277 rp->rcr_index = 0;
4278 }
4279 if (rp->rbr) {
4280 niu_rbr_free(np, rp);
4281
4282 np->ops->free_coherent(np->device,
4283 MAX_RBR_RING_SIZE * sizeof(__le32),
4284 rp->rbr, rp->rbr_dma);
4285 rp->rbr = NULL;
4286 rp->rbr_table_size = 0;
4287 rp->rbr_index = 0;
4288 }
4289 kfree(rp->rxhash);
4290 rp->rxhash = NULL;
4291}
4292
4293static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4294{
4295 if (rp->mbox) {
4296 np->ops->free_coherent(np->device,
4297 sizeof(struct txdma_mailbox),
4298 rp->mbox, rp->mbox_dma);
4299 rp->mbox = NULL;
4300 }
4301 if (rp->descr) {
4302 int i;
4303
4304 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4305 if (rp->tx_buffs[i].skb)
4306 (void) release_tx_packet(np, rp, i);
4307 }
4308
4309 np->ops->free_coherent(np->device,
4310 MAX_TX_RING_SIZE * sizeof(__le64),
4311 rp->descr, rp->descr_dma);
4312 rp->descr = NULL;
4313 rp->pending = 0;
4314 rp->prod = 0;
4315 rp->cons = 0;
4316 rp->wrap_bit = 0;
4317 }
4318}
4319
4320static void niu_free_channels(struct niu *np)
4321{
4322 int i;
4323
4324 if (np->rx_rings) {
4325 for (i = 0; i < np->num_rx_rings; i++) {
4326 struct rx_ring_info *rp = &np->rx_rings[i];
4327
4328 niu_free_rx_ring_info(np, rp);
4329 }
4330 kfree(np->rx_rings);
4331 np->rx_rings = NULL;
4332 np->num_rx_rings = 0;
4333 }
4334
4335 if (np->tx_rings) {
4336 for (i = 0; i < np->num_tx_rings; i++) {
4337 struct tx_ring_info *rp = &np->tx_rings[i];
4338
4339 niu_free_tx_ring_info(np, rp);
4340 }
4341 kfree(np->tx_rings);
4342 np->tx_rings = NULL;
4343 np->num_tx_rings = 0;
4344 }
4345}
4346
4347static int niu_alloc_rx_ring_info(struct niu *np,
4348 struct rx_ring_info *rp)
4349{
4350 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4351
4352 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4353 GFP_KERNEL);
4354 if (!rp->rxhash)
4355 return -ENOMEM;
4356
4357 rp->mbox = np->ops->alloc_coherent(np->device,
4358 sizeof(struct rxdma_mailbox),
4359 &rp->mbox_dma, GFP_KERNEL);
4360 if (!rp->mbox)
4361 return -ENOMEM;
4362 if ((unsigned long)rp->mbox & (64UL - 1)) {
4363 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4364 rp->mbox);
4365 return -EINVAL;
4366 }
4367
4368 rp->rcr = np->ops->alloc_coherent(np->device,
4369 MAX_RCR_RING_SIZE * sizeof(__le64),
4370 &rp->rcr_dma, GFP_KERNEL);
4371 if (!rp->rcr)
4372 return -ENOMEM;
4373 if ((unsigned long)rp->rcr & (64UL - 1)) {
4374 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4375 rp->rcr);
4376 return -EINVAL;
4377 }
4378 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4379 rp->rcr_index = 0;
4380
4381 rp->rbr = np->ops->alloc_coherent(np->device,
4382 MAX_RBR_RING_SIZE * sizeof(__le32),
4383 &rp->rbr_dma, GFP_KERNEL);
4384 if (!rp->rbr)
4385 return -ENOMEM;
4386 if ((unsigned long)rp->rbr & (64UL - 1)) {
4387 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4388 rp->rbr);
4389 return -EINVAL;
4390 }
4391 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4392 rp->rbr_index = 0;
4393 rp->rbr_pending = 0;
4394
4395 return 0;
4396}
4397
4398static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4399{
4400 int mtu = np->dev->mtu;
4401
4402 /* These values are recommended by the HW designers for fair
4403 * utilization of DRR amongst the rings.
4404 */
4405 rp->max_burst = mtu + 32;
4406 if (rp->max_burst > 4096)
4407 rp->max_burst = 4096;
4408}
4409
4410static int niu_alloc_tx_ring_info(struct niu *np,
4411 struct tx_ring_info *rp)
4412{
4413 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4414
4415 rp->mbox = np->ops->alloc_coherent(np->device,
4416 sizeof(struct txdma_mailbox),
4417 &rp->mbox_dma, GFP_KERNEL);
4418 if (!rp->mbox)
4419 return -ENOMEM;
4420 if ((unsigned long)rp->mbox & (64UL - 1)) {
4421 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4422 rp->mbox);
4423 return -EINVAL;
4424 }
4425
4426 rp->descr = np->ops->alloc_coherent(np->device,
4427 MAX_TX_RING_SIZE * sizeof(__le64),
4428 &rp->descr_dma, GFP_KERNEL);
4429 if (!rp->descr)
4430 return -ENOMEM;
4431 if ((unsigned long)rp->descr & (64UL - 1)) {
4432 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4433 rp->descr);
4434 return -EINVAL;
4435 }
4436
4437 rp->pending = MAX_TX_RING_SIZE;
4438 rp->prod = 0;
4439 rp->cons = 0;
4440 rp->wrap_bit = 0;
4441
4442 /* XXX make these configurable... XXX */
4443 rp->mark_freq = rp->pending / 4;
4444
4445 niu_set_max_burst(np, rp);
4446
4447 return 0;
4448}
4449
4450static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4451{
4452 u16 bss;
4453
4454 bss = min(PAGE_SHIFT, 15);
4455
4456 rp->rbr_block_size = 1 << bss;
4457 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4458
4459 rp->rbr_sizes[0] = 256;
4460 rp->rbr_sizes[1] = 1024;
4461 if (np->dev->mtu > ETH_DATA_LEN) {
4462 switch (PAGE_SIZE) {
4463 case 4 * 1024:
4464 rp->rbr_sizes[2] = 4096;
4465 break;
4466
4467 default:
4468 rp->rbr_sizes[2] = 8192;
4469 break;
4470 }
4471 } else {
4472 rp->rbr_sizes[2] = 2048;
4473 }
4474 rp->rbr_sizes[3] = rp->rbr_block_size;
4475}
4476
4477static int niu_alloc_channels(struct niu *np)
4478{
4479 struct niu_parent *parent = np->parent;
4480 int first_rx_channel, first_tx_channel;
4481 int num_rx_rings, num_tx_rings;
4482 struct rx_ring_info *rx_rings;
4483 struct tx_ring_info *tx_rings;
4484 int i, port, err;
4485
4486 port = np->port;
4487 first_rx_channel = first_tx_channel = 0;
4488 for (i = 0; i < port; i++) {
4489 first_rx_channel += parent->rxchan_per_port[i];
4490 first_tx_channel += parent->txchan_per_port[i];
4491 }
4492
4493 num_rx_rings = parent->rxchan_per_port[port];
4494 num_tx_rings = parent->txchan_per_port[port];
4495
4496 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4497 GFP_KERNEL);
4498 err = -ENOMEM;
4499 if (!rx_rings)
4500 goto out_err;
4501
4502 np->num_rx_rings = num_rx_rings;
4503 smp_wmb();
4504 np->rx_rings = rx_rings;
4505
4506 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4507
4508 for (i = 0; i < np->num_rx_rings; i++) {
4509 struct rx_ring_info *rp = &np->rx_rings[i];
4510
4511 rp->np = np;
4512 rp->rx_channel = first_rx_channel + i;
4513
4514 err = niu_alloc_rx_ring_info(np, rp);
4515 if (err)
4516 goto out_err;
4517
4518 niu_size_rbr(np, rp);
4519
4520 /* XXX better defaults, configurable, etc... XXX */
4521 rp->nonsyn_window = 64;
4522 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4523 rp->syn_window = 64;
4524 rp->syn_threshold = rp->rcr_table_size - 64;
4525 rp->rcr_pkt_threshold = 16;
4526 rp->rcr_timeout = 8;
4527 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4528 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4529 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4530
4531 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4532 if (err)
4533 return err;
4534 }
4535
4536 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4537 GFP_KERNEL);
4538 err = -ENOMEM;
4539 if (!tx_rings)
4540 goto out_err;
4541
4542 np->num_tx_rings = num_tx_rings;
4543 smp_wmb();
4544 np->tx_rings = tx_rings;
4545
4546 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4547
4548 for (i = 0; i < np->num_tx_rings; i++) {
4549 struct tx_ring_info *rp = &np->tx_rings[i];
4550
4551 rp->np = np;
4552 rp->tx_channel = first_tx_channel + i;
4553
4554 err = niu_alloc_tx_ring_info(np, rp);
4555 if (err)
4556 goto out_err;
4557 }
4558
4559 return 0;
4560
4561out_err:
4562 niu_free_channels(np);
4563 return err;
4564}
4565
4566static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4567{
4568 int limit = 1000;
4569
4570 while (--limit > 0) {
4571 u64 val = nr64(TX_CS(channel));
4572 if (val & TX_CS_SNG_STATE)
4573 return 0;
4574 }
4575 return -ENODEV;
4576}
4577
4578static int niu_tx_channel_stop(struct niu *np, int channel)
4579{
4580 u64 val = nr64(TX_CS(channel));
4581
4582 val |= TX_CS_STOP_N_GO;
4583 nw64(TX_CS(channel), val);
4584
4585 return niu_tx_cs_sng_poll(np, channel);
4586}
4587
4588static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4589{
4590 int limit = 1000;
4591
4592 while (--limit > 0) {
4593 u64 val = nr64(TX_CS(channel));
4594 if (!(val & TX_CS_RST))
4595 return 0;
4596 }
4597 return -ENODEV;
4598}
4599
4600static int niu_tx_channel_reset(struct niu *np, int channel)
4601{
4602 u64 val = nr64(TX_CS(channel));
4603 int err;
4604
4605 val |= TX_CS_RST;
4606 nw64(TX_CS(channel), val);
4607
4608 err = niu_tx_cs_reset_poll(np, channel);
4609 if (!err)
4610 nw64(TX_RING_KICK(channel), 0);
4611
4612 return err;
4613}
4614
4615static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4616{
4617 u64 val;
4618
4619 nw64(TX_LOG_MASK1(channel), 0);
4620 nw64(TX_LOG_VAL1(channel), 0);
4621 nw64(TX_LOG_MASK2(channel), 0);
4622 nw64(TX_LOG_VAL2(channel), 0);
4623 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4624 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4625 nw64(TX_LOG_PAGE_HDL(channel), 0);
4626
4627 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4628 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4629 nw64(TX_LOG_PAGE_VLD(channel), val);
4630
4631 /* XXX TXDMA 32bit mode? XXX */
4632
4633 return 0;
4634}
4635
4636static void niu_txc_enable_port(struct niu *np, int on)
4637{
4638 unsigned long flags;
4639 u64 val, mask;
4640
4641 niu_lock_parent(np, flags);
4642 val = nr64(TXC_CONTROL);
4643 mask = (u64)1 << np->port;
4644 if (on) {
4645 val |= TXC_CONTROL_ENABLE | mask;
4646 } else {
4647 val &= ~mask;
4648 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4649 val &= ~TXC_CONTROL_ENABLE;
4650 }
4651 nw64(TXC_CONTROL, val);
4652 niu_unlock_parent(np, flags);
4653}
4654
4655static void niu_txc_set_imask(struct niu *np, u64 imask)
4656{
4657 unsigned long flags;
4658 u64 val;
4659
4660 niu_lock_parent(np, flags);
4661 val = nr64(TXC_INT_MASK);
4662 val &= ~TXC_INT_MASK_VAL(np->port);
4663 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4664 niu_unlock_parent(np, flags);
4665}
4666
4667static void niu_txc_port_dma_enable(struct niu *np, int on)
4668{
4669 u64 val = 0;
4670
4671 if (on) {
4672 int i;
4673
4674 for (i = 0; i < np->num_tx_rings; i++)
4675 val |= (1 << np->tx_rings[i].tx_channel);
4676 }
4677 nw64(TXC_PORT_DMA(np->port), val);
4678}
4679
4680static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4681{
4682 int err, channel = rp->tx_channel;
4683 u64 val, ring_len;
4684
4685 err = niu_tx_channel_stop(np, channel);
4686 if (err)
4687 return err;
4688
4689 err = niu_tx_channel_reset(np, channel);
4690 if (err)
4691 return err;
4692
4693 err = niu_tx_channel_lpage_init(np, channel);
4694 if (err)
4695 return err;
4696
4697 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4698 nw64(TX_ENT_MSK(channel), 0);
4699
4700 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4701 TX_RNG_CFIG_STADDR)) {
4702 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4703 channel, (unsigned long long)rp->descr_dma);
4704 return -EINVAL;
4705 }
4706
4707 /* The length field in TX_RNG_CFIG is measured in 64-byte
4708 * blocks. rp->pending is the number of TX descriptors in
4709 * our ring, 8 bytes each, thus we divide by 8 bytes more
4710 * to get the proper value the chip wants.
4711 */
4712 ring_len = (rp->pending / 8);
4713
4714 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4715 rp->descr_dma);
4716 nw64(TX_RNG_CFIG(channel), val);
4717
4718 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4719 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4720 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4721 channel, (unsigned long long)rp->mbox_dma);
4722 return -EINVAL;
4723 }
4724 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4725 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4726
4727 nw64(TX_CS(channel), 0);
4728
4729 rp->last_pkt_cnt = 0;
4730
4731 return 0;
4732}
4733
4734static void niu_init_rdc_groups(struct niu *np)
4735{
4736 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4737 int i, first_table_num = tp->first_table_num;
4738
4739 for (i = 0; i < tp->num_tables; i++) {
4740 struct rdc_table *tbl = &tp->tables[i];
4741 int this_table = first_table_num + i;
4742 int slot;
4743
4744 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4745 nw64(RDC_TBL(this_table, slot),
4746 tbl->rxdma_channel[slot]);
4747 }
4748
4749 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4750}
4751
4752static void niu_init_drr_weight(struct niu *np)
4753{
4754 int type = phy_decode(np->parent->port_phy, np->port);
4755 u64 val;
4756
4757 switch (type) {
4758 case PORT_TYPE_10G:
4759 val = PT_DRR_WEIGHT_DEFAULT_10G;
4760 break;
4761
4762 case PORT_TYPE_1G:
4763 default:
4764 val = PT_DRR_WEIGHT_DEFAULT_1G;
4765 break;
4766 }
4767 nw64(PT_DRR_WT(np->port), val);
4768}
4769
4770static int niu_init_hostinfo(struct niu *np)
4771{
4772 struct niu_parent *parent = np->parent;
4773 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4774 int i, err, num_alt = niu_num_alt_addr(np);
4775 int first_rdc_table = tp->first_table_num;
4776
4777 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4778 if (err)
4779 return err;
4780
4781 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4782 if (err)
4783 return err;
4784
4785 for (i = 0; i < num_alt; i++) {
4786 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4787 if (err)
4788 return err;
4789 }
4790
4791 return 0;
4792}
4793
4794static int niu_rx_channel_reset(struct niu *np, int channel)
4795{
4796 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4797 RXDMA_CFIG1_RST, 1000, 10,
4798 "RXDMA_CFIG1");
4799}
4800
4801static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4802{
4803 u64 val;
4804
4805 nw64(RX_LOG_MASK1(channel), 0);
4806 nw64(RX_LOG_VAL1(channel), 0);
4807 nw64(RX_LOG_MASK2(channel), 0);
4808 nw64(RX_LOG_VAL2(channel), 0);
4809 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4810 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4811 nw64(RX_LOG_PAGE_HDL(channel), 0);
4812
4813 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4814 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4815 nw64(RX_LOG_PAGE_VLD(channel), val);
4816
4817 return 0;
4818}
4819
4820static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4821{
4822 u64 val;
4823
4824 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4825 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4826 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4827 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4828 nw64(RDC_RED_PARA(rp->rx_channel), val);
4829}
4830
4831static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4832{
4833 u64 val = 0;
4834
4835 *ret = 0;
4836 switch (rp->rbr_block_size) {
4837 case 4 * 1024:
4838 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4839 break;
4840 case 8 * 1024:
4841 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4842 break;
4843 case 16 * 1024:
4844 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4845 break;
4846 case 32 * 1024:
4847 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4848 break;
4849 default:
4850 return -EINVAL;
4851 }
4852 val |= RBR_CFIG_B_VLD2;
4853 switch (rp->rbr_sizes[2]) {
4854 case 2 * 1024:
4855 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4856 break;
4857 case 4 * 1024:
4858 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4859 break;
4860 case 8 * 1024:
4861 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4862 break;
4863 case 16 * 1024:
4864 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4865 break;
4866
4867 default:
4868 return -EINVAL;
4869 }
4870 val |= RBR_CFIG_B_VLD1;
4871 switch (rp->rbr_sizes[1]) {
4872 case 1 * 1024:
4873 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4874 break;
4875 case 2 * 1024:
4876 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4877 break;
4878 case 4 * 1024:
4879 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4880 break;
4881 case 8 * 1024:
4882 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4883 break;
4884
4885 default:
4886 return -EINVAL;
4887 }
4888 val |= RBR_CFIG_B_VLD0;
4889 switch (rp->rbr_sizes[0]) {
4890 case 256:
4891 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4892 break;
4893 case 512:
4894 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4895 break;
4896 case 1 * 1024:
4897 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4898 break;
4899 case 2 * 1024:
4900 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4901 break;
4902
4903 default:
4904 return -EINVAL;
4905 }
4906
4907 *ret = val;
4908 return 0;
4909}
4910
4911static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4912{
4913 u64 val = nr64(RXDMA_CFIG1(channel));
4914 int limit;
4915
4916 if (on)
4917 val |= RXDMA_CFIG1_EN;
4918 else
4919 val &= ~RXDMA_CFIG1_EN;
4920 nw64(RXDMA_CFIG1(channel), val);
4921
4922 limit = 1000;
4923 while (--limit > 0) {
4924 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4925 break;
4926 udelay(10);
4927 }
4928 if (limit <= 0)
4929 return -ENODEV;
4930 return 0;
4931}
4932
4933static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4934{
4935 int err, channel = rp->rx_channel;
4936 u64 val;
4937
4938 err = niu_rx_channel_reset(np, channel);
4939 if (err)
4940 return err;
4941
4942 err = niu_rx_channel_lpage_init(np, channel);
4943 if (err)
4944 return err;
4945
4946 niu_rx_channel_wred_init(np, rp);
4947
4948 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4949 nw64(RX_DMA_CTL_STAT(channel),
4950 (RX_DMA_CTL_STAT_MEX |
4951 RX_DMA_CTL_STAT_RCRTHRES |
4952 RX_DMA_CTL_STAT_RCRTO |
4953 RX_DMA_CTL_STAT_RBR_EMPTY));
4954 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4955 nw64(RXDMA_CFIG2(channel),
4956 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4957 RXDMA_CFIG2_FULL_HDR));
4958 nw64(RBR_CFIG_A(channel),
4959 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4960 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4961 err = niu_compute_rbr_cfig_b(rp, &val);
4962 if (err)
4963 return err;
4964 nw64(RBR_CFIG_B(channel), val);
4965 nw64(RCRCFIG_A(channel),
4966 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4967 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4968 nw64(RCRCFIG_B(channel),
4969 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4970 RCRCFIG_B_ENTOUT |
4971 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4972
4973 err = niu_enable_rx_channel(np, channel, 1);
4974 if (err)
4975 return err;
4976
4977 nw64(RBR_KICK(channel), rp->rbr_index);
4978
4979 val = nr64(RX_DMA_CTL_STAT(channel));
4980 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4981 nw64(RX_DMA_CTL_STAT(channel), val);
4982
4983 return 0;
4984}
4985
4986static int niu_init_rx_channels(struct niu *np)
4987{
4988 unsigned long flags;
4989 u64 seed = jiffies_64;
4990 int err, i;
4991
4992 niu_lock_parent(np, flags);
4993 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4994 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4995 niu_unlock_parent(np, flags);
4996
4997 /* XXX RXDMA 32bit mode? XXX */
4998
4999 niu_init_rdc_groups(np);
5000 niu_init_drr_weight(np);
5001
5002 err = niu_init_hostinfo(np);
5003 if (err)
5004 return err;
5005
5006 for (i = 0; i < np->num_rx_rings; i++) {
5007 struct rx_ring_info *rp = &np->rx_rings[i];
5008
5009 err = niu_init_one_rx_channel(np, rp);
5010 if (err)
5011 return err;
5012 }
5013
5014 return 0;
5015}
5016
5017static int niu_set_ip_frag_rule(struct niu *np)
5018{
5019 struct niu_parent *parent = np->parent;
5020 struct niu_classifier *cp = &np->clas;
5021 struct niu_tcam_entry *tp;
5022 int index, err;
5023
5024 index = cp->tcam_top;
5025 tp = &parent->tcam[index];
5026
5027 /* Note that the noport bit is the same in both ipv4 and
5028 * ipv6 format TCAM entries.
5029 */
5030 memset(tp, 0, sizeof(*tp));
5031 tp->key[1] = TCAM_V4KEY1_NOPORT;
5032 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5033 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5034 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5035 err = tcam_write(np, index, tp->key, tp->key_mask);
5036 if (err)
5037 return err;
5038 err = tcam_assoc_write(np, index, tp->assoc_data);
5039 if (err)
5040 return err;
5041 tp->valid = 1;
5042 cp->tcam_valid_entries++;
5043
5044 return 0;
5045}
5046
5047static int niu_init_classifier_hw(struct niu *np)
5048{
5049 struct niu_parent *parent = np->parent;
5050 struct niu_classifier *cp = &np->clas;
5051 int i, err;
5052
5053 nw64(H1POLY, cp->h1_init);
5054 nw64(H2POLY, cp->h2_init);
5055
5056 err = niu_init_hostinfo(np);
5057 if (err)
5058 return err;
5059
5060 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5061 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5062
5063 vlan_tbl_write(np, i, np->port,
5064 vp->vlan_pref, vp->rdc_num);
5065 }
5066
5067 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5068 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5069
5070 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5071 ap->rdc_num, ap->mac_pref);
5072 if (err)
5073 return err;
5074 }
5075
5076 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5077 int index = i - CLASS_CODE_USER_PROG1;
5078
5079 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5080 if (err)
5081 return err;
5082 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5083 if (err)
5084 return err;
5085 }
5086
5087 err = niu_set_ip_frag_rule(np);
5088 if (err)
5089 return err;
5090
5091 tcam_enable(np, 1);
5092
5093 return 0;
5094}
5095
5096static int niu_zcp_write(struct niu *np, int index, u64 *data)
5097{
5098 nw64(ZCP_RAM_DATA0, data[0]);
5099 nw64(ZCP_RAM_DATA1, data[1]);
5100 nw64(ZCP_RAM_DATA2, data[2]);
5101 nw64(ZCP_RAM_DATA3, data[3]);
5102 nw64(ZCP_RAM_DATA4, data[4]);
5103 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5104 nw64(ZCP_RAM_ACC,
5105 (ZCP_RAM_ACC_WRITE |
5106 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5107 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5108
5109 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5110 1000, 100);
5111}
5112
5113static int niu_zcp_read(struct niu *np, int index, u64 *data)
5114{
5115 int err;
5116
5117 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5118 1000, 100);
5119 if (err) {
5120 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5121 (unsigned long long)nr64(ZCP_RAM_ACC));
5122 return err;
5123 }
5124
5125 nw64(ZCP_RAM_ACC,
5126 (ZCP_RAM_ACC_READ |
5127 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5128 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5129
5130 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5131 1000, 100);
5132 if (err) {
5133 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5134 (unsigned long long)nr64(ZCP_RAM_ACC));
5135 return err;
5136 }
5137
5138 data[0] = nr64(ZCP_RAM_DATA0);
5139 data[1] = nr64(ZCP_RAM_DATA1);
5140 data[2] = nr64(ZCP_RAM_DATA2);
5141 data[3] = nr64(ZCP_RAM_DATA3);
5142 data[4] = nr64(ZCP_RAM_DATA4);
5143
5144 return 0;
5145}
5146
5147static void niu_zcp_cfifo_reset(struct niu *np)
5148{
5149 u64 val = nr64(RESET_CFIFO);
5150
5151 val |= RESET_CFIFO_RST(np->port);
5152 nw64(RESET_CFIFO, val);
5153 udelay(10);
5154
5155 val &= ~RESET_CFIFO_RST(np->port);
5156 nw64(RESET_CFIFO, val);
5157}
5158
5159static int niu_init_zcp(struct niu *np)
5160{
5161 u64 data[5], rbuf[5];
5162 int i, max, err;
5163
5164 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5165 if (np->port == 0 || np->port == 1)
5166 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5167 else
5168 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5169 } else
5170 max = NIU_CFIFO_ENTRIES;
5171
5172 data[0] = 0;
5173 data[1] = 0;
5174 data[2] = 0;
5175 data[3] = 0;
5176 data[4] = 0;
5177
5178 for (i = 0; i < max; i++) {
5179 err = niu_zcp_write(np, i, data);
5180 if (err)
5181 return err;
5182 err = niu_zcp_read(np, i, rbuf);
5183 if (err)
5184 return err;
5185 }
5186
5187 niu_zcp_cfifo_reset(np);
5188 nw64(CFIFO_ECC(np->port), 0);
5189 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5190 (void) nr64(ZCP_INT_STAT);
5191 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5192
5193 return 0;
5194}
5195
5196static void niu_ipp_write(struct niu *np, int index, u64 *data)
5197{
5198 u64 val = nr64_ipp(IPP_CFIG);
5199
5200 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5201 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5202 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5203 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5204 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5205 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5206 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5207 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5208}
5209
5210static void niu_ipp_read(struct niu *np, int index, u64 *data)
5211{
5212 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5213 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5214 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5215 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5216 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5217 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5218}
5219
5220static int niu_ipp_reset(struct niu *np)
5221{
5222 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5223 1000, 100, "IPP_CFIG");
5224}
5225
5226static int niu_init_ipp(struct niu *np)
5227{
5228 u64 data[5], rbuf[5], val;
5229 int i, max, err;
5230
5231 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5232 if (np->port == 0 || np->port == 1)
5233 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5234 else
5235 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5236 } else
5237 max = NIU_DFIFO_ENTRIES;
5238
5239 data[0] = 0;
5240 data[1] = 0;
5241 data[2] = 0;
5242 data[3] = 0;
5243 data[4] = 0;
5244
5245 for (i = 0; i < max; i++) {
5246 niu_ipp_write(np, i, data);
5247 niu_ipp_read(np, i, rbuf);
5248 }
5249
5250 (void) nr64_ipp(IPP_INT_STAT);
5251 (void) nr64_ipp(IPP_INT_STAT);
5252
5253 err = niu_ipp_reset(np);
5254 if (err)
5255 return err;
5256
5257 (void) nr64_ipp(IPP_PKT_DIS);
5258 (void) nr64_ipp(IPP_BAD_CS_CNT);
5259 (void) nr64_ipp(IPP_ECC);
5260
5261 (void) nr64_ipp(IPP_INT_STAT);
5262
5263 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5264
5265 val = nr64_ipp(IPP_CFIG);
5266 val &= ~IPP_CFIG_IP_MAX_PKT;
5267 val |= (IPP_CFIG_IPP_ENABLE |
5268 IPP_CFIG_DFIFO_ECC_EN |
5269 IPP_CFIG_DROP_BAD_CRC |
5270 IPP_CFIG_CKSUM_EN |
5271 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5272 nw64_ipp(IPP_CFIG, val);
5273
5274 return 0;
5275}
5276
5277static void niu_handle_led(struct niu *np, int status)
5278{
5279 u64 val;
5280 val = nr64_mac(XMAC_CONFIG);
5281
5282 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5283 (np->flags & NIU_FLAGS_FIBER) != 0) {
5284 if (status) {
5285 val |= XMAC_CONFIG_LED_POLARITY;
5286 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5287 } else {
5288 val |= XMAC_CONFIG_FORCE_LED_ON;
5289 val &= ~XMAC_CONFIG_LED_POLARITY;
5290 }
5291 }
5292
5293 nw64_mac(XMAC_CONFIG, val);
5294}
5295
5296static void niu_init_xif_xmac(struct niu *np)
5297{
5298 struct niu_link_config *lp = &np->link_config;
5299 u64 val;
5300
5301 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5302 val = nr64(MIF_CONFIG);
5303 val |= MIF_CONFIG_ATCA_GE;
5304 nw64(MIF_CONFIG, val);
5305 }
5306
5307 val = nr64_mac(XMAC_CONFIG);
5308 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5309
5310 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5311
5312 if (lp->loopback_mode == LOOPBACK_MAC) {
5313 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5314 val |= XMAC_CONFIG_LOOPBACK;
5315 } else {
5316 val &= ~XMAC_CONFIG_LOOPBACK;
5317 }
5318
5319 if (np->flags & NIU_FLAGS_10G) {
5320 val &= ~XMAC_CONFIG_LFS_DISABLE;
5321 } else {
5322 val |= XMAC_CONFIG_LFS_DISABLE;
5323 if (!(np->flags & NIU_FLAGS_FIBER) &&
5324 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5325 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5326 else
5327 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5328 }
5329
5330 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5331
5332 if (lp->active_speed == SPEED_100)
5333 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5334 else
5335 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5336
5337 nw64_mac(XMAC_CONFIG, val);
5338
5339 val = nr64_mac(XMAC_CONFIG);
5340 val &= ~XMAC_CONFIG_MODE_MASK;
5341 if (np->flags & NIU_FLAGS_10G) {
5342 val |= XMAC_CONFIG_MODE_XGMII;
5343 } else {
5344 if (lp->active_speed == SPEED_1000)
5345 val |= XMAC_CONFIG_MODE_GMII;
5346 else
5347 val |= XMAC_CONFIG_MODE_MII;
5348 }
5349
5350 nw64_mac(XMAC_CONFIG, val);
5351}
5352
5353static void niu_init_xif_bmac(struct niu *np)
5354{
5355 struct niu_link_config *lp = &np->link_config;
5356 u64 val;
5357
5358 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5359
5360 if (lp->loopback_mode == LOOPBACK_MAC)
5361 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5362 else
5363 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5364
5365 if (lp->active_speed == SPEED_1000)
5366 val |= BMAC_XIF_CONFIG_GMII_MODE;
5367 else
5368 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5369
5370 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5371 BMAC_XIF_CONFIG_LED_POLARITY);
5372
5373 if (!(np->flags & NIU_FLAGS_10G) &&
5374 !(np->flags & NIU_FLAGS_FIBER) &&
5375 lp->active_speed == SPEED_100)
5376 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5377 else
5378 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5379
5380 nw64_mac(BMAC_XIF_CONFIG, val);
5381}
5382
5383static void niu_init_xif(struct niu *np)
5384{
5385 if (np->flags & NIU_FLAGS_XMAC)
5386 niu_init_xif_xmac(np);
5387 else
5388 niu_init_xif_bmac(np);
5389}
5390
5391static void niu_pcs_mii_reset(struct niu *np)
5392{
5393 int limit = 1000;
5394 u64 val = nr64_pcs(PCS_MII_CTL);
5395 val |= PCS_MII_CTL_RST;
5396 nw64_pcs(PCS_MII_CTL, val);
5397 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5398 udelay(100);
5399 val = nr64_pcs(PCS_MII_CTL);
5400 }
5401}
5402
5403static void niu_xpcs_reset(struct niu *np)
5404{
5405 int limit = 1000;
5406 u64 val = nr64_xpcs(XPCS_CONTROL1);
5407 val |= XPCS_CONTROL1_RESET;
5408 nw64_xpcs(XPCS_CONTROL1, val);
5409 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5410 udelay(100);
5411 val = nr64_xpcs(XPCS_CONTROL1);
5412 }
5413}
5414
5415static int niu_init_pcs(struct niu *np)
5416{
5417 struct niu_link_config *lp = &np->link_config;
5418 u64 val;
5419
5420 switch (np->flags & (NIU_FLAGS_10G |
5421 NIU_FLAGS_FIBER |
5422 NIU_FLAGS_XCVR_SERDES)) {
5423 case NIU_FLAGS_FIBER:
5424 /* 1G fiber */
5425 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5426 nw64_pcs(PCS_DPATH_MODE, 0);
5427 niu_pcs_mii_reset(np);
5428 break;
5429
5430 case NIU_FLAGS_10G:
5431 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5432 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5433 /* 10G SERDES */
5434 if (!(np->flags & NIU_FLAGS_XMAC))
5435 return -EINVAL;
5436
5437 /* 10G copper or fiber */
5438 val = nr64_mac(XMAC_CONFIG);
5439 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5440 nw64_mac(XMAC_CONFIG, val);
5441
5442 niu_xpcs_reset(np);
5443
5444 val = nr64_xpcs(XPCS_CONTROL1);
5445 if (lp->loopback_mode == LOOPBACK_PHY)
5446 val |= XPCS_CONTROL1_LOOPBACK;
5447 else
5448 val &= ~XPCS_CONTROL1_LOOPBACK;
5449 nw64_xpcs(XPCS_CONTROL1, val);
5450
5451 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5452 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5453 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5454 break;
5455
5456
5457 case NIU_FLAGS_XCVR_SERDES:
5458 /* 1G SERDES */
5459 niu_pcs_mii_reset(np);
5460 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5461 nw64_pcs(PCS_DPATH_MODE, 0);
5462 break;
5463
5464 case 0:
5465 /* 1G copper */
5466 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5467 /* 1G RGMII FIBER */
5468 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5469 niu_pcs_mii_reset(np);
5470 break;
5471
5472 default:
5473 return -EINVAL;
5474 }
5475
5476 return 0;
5477}
5478
5479static int niu_reset_tx_xmac(struct niu *np)
5480{
5481 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5482 (XTXMAC_SW_RST_REG_RS |
5483 XTXMAC_SW_RST_SOFT_RST),
5484 1000, 100, "XTXMAC_SW_RST");
5485}
5486
5487static int niu_reset_tx_bmac(struct niu *np)
5488{
5489 int limit;
5490
5491 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5492 limit = 1000;
5493 while (--limit >= 0) {
5494 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5495 break;
5496 udelay(100);
5497 }
5498 if (limit < 0) {
5499 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5500 np->port,
5501 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5502 return -ENODEV;
5503 }
5504
5505 return 0;
5506}
5507
5508static int niu_reset_tx_mac(struct niu *np)
5509{
5510 if (np->flags & NIU_FLAGS_XMAC)
5511 return niu_reset_tx_xmac(np);
5512 else
5513 return niu_reset_tx_bmac(np);
5514}
5515
5516static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5517{
5518 u64 val;
5519
5520 val = nr64_mac(XMAC_MIN);
5521 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5522 XMAC_MIN_RX_MIN_PKT_SIZE);
5523 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5524 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5525 nw64_mac(XMAC_MIN, val);
5526
5527 nw64_mac(XMAC_MAX, max);
5528
5529 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5530
5531 val = nr64_mac(XMAC_IPG);
5532 if (np->flags & NIU_FLAGS_10G) {
5533 val &= ~XMAC_IPG_IPG_XGMII;
5534 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5535 } else {
5536 val &= ~XMAC_IPG_IPG_MII_GMII;
5537 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5538 }
5539 nw64_mac(XMAC_IPG, val);
5540
5541 val = nr64_mac(XMAC_CONFIG);
5542 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5543 XMAC_CONFIG_STRETCH_MODE |
5544 XMAC_CONFIG_VAR_MIN_IPG_EN |
5545 XMAC_CONFIG_TX_ENABLE);
5546 nw64_mac(XMAC_CONFIG, val);
5547
5548 nw64_mac(TXMAC_FRM_CNT, 0);
5549 nw64_mac(TXMAC_BYTE_CNT, 0);
5550}
5551
5552static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5553{
5554 u64 val;
5555
5556 nw64_mac(BMAC_MIN_FRAME, min);
5557 nw64_mac(BMAC_MAX_FRAME, max);
5558
5559 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5560 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5561 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5562
5563 val = nr64_mac(BTXMAC_CONFIG);
5564 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5565 BTXMAC_CONFIG_ENABLE);
5566 nw64_mac(BTXMAC_CONFIG, val);
5567}
5568
5569static void niu_init_tx_mac(struct niu *np)
5570{
5571 u64 min, max;
5572
5573 min = 64;
5574 if (np->dev->mtu > ETH_DATA_LEN)
5575 max = 9216;
5576 else
5577 max = 1522;
5578
5579 /* The XMAC_MIN register only accepts values for TX min which
5580 * have the low 3 bits cleared.
5581 */
5582 BUG_ON(min & 0x7);
5583
5584 if (np->flags & NIU_FLAGS_XMAC)
5585 niu_init_tx_xmac(np, min, max);
5586 else
5587 niu_init_tx_bmac(np, min, max);
5588}
5589
5590static int niu_reset_rx_xmac(struct niu *np)
5591{
5592 int limit;
5593
5594 nw64_mac(XRXMAC_SW_RST,
5595 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5596 limit = 1000;
5597 while (--limit >= 0) {
5598 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5599 XRXMAC_SW_RST_SOFT_RST)))
5600 break;
5601 udelay(100);
5602 }
5603 if (limit < 0) {
5604 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5605 np->port,
5606 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5607 return -ENODEV;
5608 }
5609
5610 return 0;
5611}
5612
5613static int niu_reset_rx_bmac(struct niu *np)
5614{
5615 int limit;
5616
5617 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5618 limit = 1000;
5619 while (--limit >= 0) {
5620 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5621 break;
5622 udelay(100);
5623 }
5624 if (limit < 0) {
5625 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5626 np->port,
5627 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5628 return -ENODEV;
5629 }
5630
5631 return 0;
5632}
5633
5634static int niu_reset_rx_mac(struct niu *np)
5635{
5636 if (np->flags & NIU_FLAGS_XMAC)
5637 return niu_reset_rx_xmac(np);
5638 else
5639 return niu_reset_rx_bmac(np);
5640}
5641
5642static void niu_init_rx_xmac(struct niu *np)
5643{
5644 struct niu_parent *parent = np->parent;
5645 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5646 int first_rdc_table = tp->first_table_num;
5647 unsigned long i;
5648 u64 val;
5649
5650 nw64_mac(XMAC_ADD_FILT0, 0);
5651 nw64_mac(XMAC_ADD_FILT1, 0);
5652 nw64_mac(XMAC_ADD_FILT2, 0);
5653 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5654 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5655 for (i = 0; i < MAC_NUM_HASH; i++)
5656 nw64_mac(XMAC_HASH_TBL(i), 0);
5657 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5658 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5659 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5660
5661 val = nr64_mac(XMAC_CONFIG);
5662 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5663 XMAC_CONFIG_PROMISCUOUS |
5664 XMAC_CONFIG_PROMISC_GROUP |
5665 XMAC_CONFIG_ERR_CHK_DIS |
5666 XMAC_CONFIG_RX_CRC_CHK_DIS |
5667 XMAC_CONFIG_RESERVED_MULTICAST |
5668 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5669 XMAC_CONFIG_ADDR_FILTER_EN |
5670 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5671 XMAC_CONFIG_STRIP_CRC |
5672 XMAC_CONFIG_PASS_FLOW_CTRL |
5673 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5674 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5675 nw64_mac(XMAC_CONFIG, val);
5676
5677 nw64_mac(RXMAC_BT_CNT, 0);
5678 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5679 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5680 nw64_mac(RXMAC_FRAG_CNT, 0);
5681 nw64_mac(RXMAC_HIST_CNT1, 0);
5682 nw64_mac(RXMAC_HIST_CNT2, 0);
5683 nw64_mac(RXMAC_HIST_CNT3, 0);
5684 nw64_mac(RXMAC_HIST_CNT4, 0);
5685 nw64_mac(RXMAC_HIST_CNT5, 0);
5686 nw64_mac(RXMAC_HIST_CNT6, 0);
5687 nw64_mac(RXMAC_HIST_CNT7, 0);
5688 nw64_mac(RXMAC_MPSZER_CNT, 0);
5689 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5690 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5691 nw64_mac(LINK_FAULT_CNT, 0);
5692}
5693
5694static void niu_init_rx_bmac(struct niu *np)
5695{
5696 struct niu_parent *parent = np->parent;
5697 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5698 int first_rdc_table = tp->first_table_num;
5699 unsigned long i;
5700 u64 val;
5701
5702 nw64_mac(BMAC_ADD_FILT0, 0);
5703 nw64_mac(BMAC_ADD_FILT1, 0);
5704 nw64_mac(BMAC_ADD_FILT2, 0);
5705 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5706 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5707 for (i = 0; i < MAC_NUM_HASH; i++)
5708 nw64_mac(BMAC_HASH_TBL(i), 0);
5709 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5710 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5711 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5712
5713 val = nr64_mac(BRXMAC_CONFIG);
5714 val &= ~(BRXMAC_CONFIG_ENABLE |
5715 BRXMAC_CONFIG_STRIP_PAD |
5716 BRXMAC_CONFIG_STRIP_FCS |
5717 BRXMAC_CONFIG_PROMISC |
5718 BRXMAC_CONFIG_PROMISC_GRP |
5719 BRXMAC_CONFIG_ADDR_FILT_EN |
5720 BRXMAC_CONFIG_DISCARD_DIS);
5721 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5722 nw64_mac(BRXMAC_CONFIG, val);
5723
5724 val = nr64_mac(BMAC_ADDR_CMPEN);
5725 val |= BMAC_ADDR_CMPEN_EN0;
5726 nw64_mac(BMAC_ADDR_CMPEN, val);
5727}
5728
5729static void niu_init_rx_mac(struct niu *np)
5730{
5731 niu_set_primary_mac(np, np->dev->dev_addr);
5732
5733 if (np->flags & NIU_FLAGS_XMAC)
5734 niu_init_rx_xmac(np);
5735 else
5736 niu_init_rx_bmac(np);
5737}
5738
5739static void niu_enable_tx_xmac(struct niu *np, int on)
5740{
5741 u64 val = nr64_mac(XMAC_CONFIG);
5742
5743 if (on)
5744 val |= XMAC_CONFIG_TX_ENABLE;
5745 else
5746 val &= ~XMAC_CONFIG_TX_ENABLE;
5747 nw64_mac(XMAC_CONFIG, val);
5748}
5749
5750static void niu_enable_tx_bmac(struct niu *np, int on)
5751{
5752 u64 val = nr64_mac(BTXMAC_CONFIG);
5753
5754 if (on)
5755 val |= BTXMAC_CONFIG_ENABLE;
5756 else
5757 val &= ~BTXMAC_CONFIG_ENABLE;
5758 nw64_mac(BTXMAC_CONFIG, val);
5759}
5760
5761static void niu_enable_tx_mac(struct niu *np, int on)
5762{
5763 if (np->flags & NIU_FLAGS_XMAC)
5764 niu_enable_tx_xmac(np, on);
5765 else
5766 niu_enable_tx_bmac(np, on);
5767}
5768
5769static void niu_enable_rx_xmac(struct niu *np, int on)
5770{
5771 u64 val = nr64_mac(XMAC_CONFIG);
5772
5773 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5774 XMAC_CONFIG_PROMISCUOUS);
5775
5776 if (np->flags & NIU_FLAGS_MCAST)
5777 val |= XMAC_CONFIG_HASH_FILTER_EN;
5778 if (np->flags & NIU_FLAGS_PROMISC)
5779 val |= XMAC_CONFIG_PROMISCUOUS;
5780
5781 if (on)
5782 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5783 else
5784 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5785 nw64_mac(XMAC_CONFIG, val);
5786}
5787
5788static void niu_enable_rx_bmac(struct niu *np, int on)
5789{
5790 u64 val = nr64_mac(BRXMAC_CONFIG);
5791
5792 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5793 BRXMAC_CONFIG_PROMISC);
5794
5795 if (np->flags & NIU_FLAGS_MCAST)
5796 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5797 if (np->flags & NIU_FLAGS_PROMISC)
5798 val |= BRXMAC_CONFIG_PROMISC;
5799
5800 if (on)
5801 val |= BRXMAC_CONFIG_ENABLE;
5802 else
5803 val &= ~BRXMAC_CONFIG_ENABLE;
5804 nw64_mac(BRXMAC_CONFIG, val);
5805}
5806
5807static void niu_enable_rx_mac(struct niu *np, int on)
5808{
5809 if (np->flags & NIU_FLAGS_XMAC)
5810 niu_enable_rx_xmac(np, on);
5811 else
5812 niu_enable_rx_bmac(np, on);
5813}
5814
5815static int niu_init_mac(struct niu *np)
5816{
5817 int err;
5818
5819 niu_init_xif(np);
5820 err = niu_init_pcs(np);
5821 if (err)
5822 return err;
5823
5824 err = niu_reset_tx_mac(np);
5825 if (err)
5826 return err;
5827 niu_init_tx_mac(np);
5828 err = niu_reset_rx_mac(np);
5829 if (err)
5830 return err;
5831 niu_init_rx_mac(np);
5832
5833 /* This looks hookey but the RX MAC reset we just did will
5834 * undo some of the state we setup in niu_init_tx_mac() so we
5835 * have to call it again. In particular, the RX MAC reset will
5836 * set the XMAC_MAX register back to it's default value.
5837 */
5838 niu_init_tx_mac(np);
5839 niu_enable_tx_mac(np, 1);
5840
5841 niu_enable_rx_mac(np, 1);
5842
5843 return 0;
5844}
5845
5846static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5847{
5848 (void) niu_tx_channel_stop(np, rp->tx_channel);
5849}
5850
5851static void niu_stop_tx_channels(struct niu *np)
5852{
5853 int i;
5854
5855 for (i = 0; i < np->num_tx_rings; i++) {
5856 struct tx_ring_info *rp = &np->tx_rings[i];
5857
5858 niu_stop_one_tx_channel(np, rp);
5859 }
5860}
5861
5862static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5863{
5864 (void) niu_tx_channel_reset(np, rp->tx_channel);
5865}
5866
5867static void niu_reset_tx_channels(struct niu *np)
5868{
5869 int i;
5870
5871 for (i = 0; i < np->num_tx_rings; i++) {
5872 struct tx_ring_info *rp = &np->tx_rings[i];
5873
5874 niu_reset_one_tx_channel(np, rp);
5875 }
5876}
5877
5878static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5879{
5880 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5881}
5882
5883static void niu_stop_rx_channels(struct niu *np)
5884{
5885 int i;
5886
5887 for (i = 0; i < np->num_rx_rings; i++) {
5888 struct rx_ring_info *rp = &np->rx_rings[i];
5889
5890 niu_stop_one_rx_channel(np, rp);
5891 }
5892}
5893
5894static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5895{
5896 int channel = rp->rx_channel;
5897
5898 (void) niu_rx_channel_reset(np, channel);
5899 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5900 nw64(RX_DMA_CTL_STAT(channel), 0);
5901 (void) niu_enable_rx_channel(np, channel, 0);
5902}
5903
5904static void niu_reset_rx_channels(struct niu *np)
5905{
5906 int i;
5907
5908 for (i = 0; i < np->num_rx_rings; i++) {
5909 struct rx_ring_info *rp = &np->rx_rings[i];
5910
5911 niu_reset_one_rx_channel(np, rp);
5912 }
5913}
5914
5915static void niu_disable_ipp(struct niu *np)
5916{
5917 u64 rd, wr, val;
5918 int limit;
5919
5920 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5921 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5922 limit = 100;
5923 while (--limit >= 0 && (rd != wr)) {
5924 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5925 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5926 }
5927 if (limit < 0 &&
5928 (rd != 0 && wr != 1)) {
5929 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5930 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5931 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5932 }
5933
5934 val = nr64_ipp(IPP_CFIG);
5935 val &= ~(IPP_CFIG_IPP_ENABLE |
5936 IPP_CFIG_DFIFO_ECC_EN |
5937 IPP_CFIG_DROP_BAD_CRC |
5938 IPP_CFIG_CKSUM_EN);
5939 nw64_ipp(IPP_CFIG, val);
5940
5941 (void) niu_ipp_reset(np);
5942}
5943
5944static int niu_init_hw(struct niu *np)
5945{
5946 int i, err;
5947
5948 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5949 niu_txc_enable_port(np, 1);
5950 niu_txc_port_dma_enable(np, 1);
5951 niu_txc_set_imask(np, 0);
5952
5953 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5954 for (i = 0; i < np->num_tx_rings; i++) {
5955 struct tx_ring_info *rp = &np->tx_rings[i];
5956
5957 err = niu_init_one_tx_channel(np, rp);
5958 if (err)
5959 return err;
5960 }
5961
5962 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5963 err = niu_init_rx_channels(np);
5964 if (err)
5965 goto out_uninit_tx_channels;
5966
5967 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5968 err = niu_init_classifier_hw(np);
5969 if (err)
5970 goto out_uninit_rx_channels;
5971
5972 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5973 err = niu_init_zcp(np);
5974 if (err)
5975 goto out_uninit_rx_channels;
5976
5977 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5978 err = niu_init_ipp(np);
5979 if (err)
5980 goto out_uninit_rx_channels;
5981
5982 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5983 err = niu_init_mac(np);
5984 if (err)
5985 goto out_uninit_ipp;
5986
5987 return 0;
5988
5989out_uninit_ipp:
5990 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5991 niu_disable_ipp(np);
5992
5993out_uninit_rx_channels:
5994 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5995 niu_stop_rx_channels(np);
5996 niu_reset_rx_channels(np);
5997
5998out_uninit_tx_channels:
5999 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
6000 niu_stop_tx_channels(np);
6001 niu_reset_tx_channels(np);
6002
6003 return err;
6004}
6005
6006static void niu_stop_hw(struct niu *np)
6007{
6008 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6009 niu_enable_interrupts(np, 0);
6010
6011 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6012 niu_enable_rx_mac(np, 0);
6013
6014 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6015 niu_disable_ipp(np);
6016
6017 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6018 niu_stop_tx_channels(np);
6019
6020 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6021 niu_stop_rx_channels(np);
6022
6023 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6024 niu_reset_tx_channels(np);
6025
6026 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6027 niu_reset_rx_channels(np);
6028}
6029
6030static void niu_set_irq_name(struct niu *np)
6031{
6032 int port = np->port;
6033 int i, j = 1;
6034
6035 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6036
6037 if (port == 0) {
6038 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6039 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6040 j = 3;
6041 }
6042
6043 for (i = 0; i < np->num_ldg - j; i++) {
6044 if (i < np->num_rx_rings)
6045 sprintf(np->irq_name[i+j], "%s-rx-%d",
6046 np->dev->name, i);
6047 else if (i < np->num_tx_rings + np->num_rx_rings)
6048 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6049 i - np->num_rx_rings);
6050 }
6051}
6052
6053static int niu_request_irq(struct niu *np)
6054{
6055 int i, j, err;
6056
6057 niu_set_irq_name(np);
6058
6059 err = 0;
6060 for (i = 0; i < np->num_ldg; i++) {
6061 struct niu_ldg *lp = &np->ldg[i];
6062
6063 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6064 np->irq_name[i], lp);
6065 if (err)
6066 goto out_free_irqs;
6067
6068 }
6069
6070 return 0;
6071
6072out_free_irqs:
6073 for (j = 0; j < i; j++) {
6074 struct niu_ldg *lp = &np->ldg[j];
6075
6076 free_irq(lp->irq, lp);
6077 }
6078 return err;
6079}
6080
6081static void niu_free_irq(struct niu *np)
6082{
6083 int i;
6084
6085 for (i = 0; i < np->num_ldg; i++) {
6086 struct niu_ldg *lp = &np->ldg[i];
6087
6088 free_irq(lp->irq, lp);
6089 }
6090}
6091
6092static void niu_enable_napi(struct niu *np)
6093{
6094 int i;
6095
6096 for (i = 0; i < np->num_ldg; i++)
6097 napi_enable(&np->ldg[i].napi);
6098}
6099
6100static void niu_disable_napi(struct niu *np)
6101{
6102 int i;
6103
6104 for (i = 0; i < np->num_ldg; i++)
6105 napi_disable(&np->ldg[i].napi);
6106}
6107
6108static int niu_open(struct net_device *dev)
6109{
6110 struct niu *np = netdev_priv(dev);
6111 int err;
6112
6113 netif_carrier_off(dev);
6114
6115 err = niu_alloc_channels(np);
6116 if (err)
6117 goto out_err;
6118
6119 err = niu_enable_interrupts(np, 0);
6120 if (err)
6121 goto out_free_channels;
6122
6123 err = niu_request_irq(np);
6124 if (err)
6125 goto out_free_channels;
6126
6127 niu_enable_napi(np);
6128
6129 spin_lock_irq(&np->lock);
6130
6131 err = niu_init_hw(np);
6132 if (!err) {
6133 init_timer(&np->timer);
6134 np->timer.expires = jiffies + HZ;
6135 np->timer.data = (unsigned long) np;
6136 np->timer.function = niu_timer;
6137
6138 err = niu_enable_interrupts(np, 1);
6139 if (err)
6140 niu_stop_hw(np);
6141 }
6142
6143 spin_unlock_irq(&np->lock);
6144
6145 if (err) {
6146 niu_disable_napi(np);
6147 goto out_free_irq;
6148 }
6149
6150 netif_tx_start_all_queues(dev);
6151
6152 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6153 netif_carrier_on(dev);
6154
6155 add_timer(&np->timer);
6156
6157 return 0;
6158
6159out_free_irq:
6160 niu_free_irq(np);
6161
6162out_free_channels:
6163 niu_free_channels(np);
6164
6165out_err:
6166 return err;
6167}
6168
6169static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6170{
6171 cancel_work_sync(&np->reset_task);
6172
6173 niu_disable_napi(np);
6174 netif_tx_stop_all_queues(dev);
6175
6176 del_timer_sync(&np->timer);
6177
6178 spin_lock_irq(&np->lock);
6179
6180 niu_stop_hw(np);
6181
6182 spin_unlock_irq(&np->lock);
6183}
6184
6185static int niu_close(struct net_device *dev)
6186{
6187 struct niu *np = netdev_priv(dev);
6188
6189 niu_full_shutdown(np, dev);
6190
6191 niu_free_irq(np);
6192
6193 niu_free_channels(np);
6194
6195 niu_handle_led(np, 0);
6196
6197 return 0;
6198}
6199
6200static void niu_sync_xmac_stats(struct niu *np)
6201{
6202 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6203
6204 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6205 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6206
6207 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6208 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6209 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6210 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6211 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6212 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6213 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6214 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6215 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6216 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6217 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6218 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6219 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6220 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6221 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6222 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6223}
6224
6225static void niu_sync_bmac_stats(struct niu *np)
6226{
6227 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6228
6229 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6230 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6231
6232 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6233 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6234 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6235 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6236}
6237
6238static void niu_sync_mac_stats(struct niu *np)
6239{
6240 if (np->flags & NIU_FLAGS_XMAC)
6241 niu_sync_xmac_stats(np);
6242 else
6243 niu_sync_bmac_stats(np);
6244}
6245
6246static void niu_get_rx_stats(struct niu *np,
6247 struct rtnl_link_stats64 *stats)
6248{
6249 u64 pkts, dropped, errors, bytes;
6250 struct rx_ring_info *rx_rings;
6251 int i;
6252
6253 pkts = dropped = errors = bytes = 0;
6254
6255 rx_rings = ACCESS_ONCE(np->rx_rings);
6256 if (!rx_rings)
6257 goto no_rings;
6258
6259 for (i = 0; i < np->num_rx_rings; i++) {
6260 struct rx_ring_info *rp = &rx_rings[i];
6261
6262 niu_sync_rx_discard_stats(np, rp, 0);
6263
6264 pkts += rp->rx_packets;
6265 bytes += rp->rx_bytes;
6266 dropped += rp->rx_dropped;
6267 errors += rp->rx_errors;
6268 }
6269
6270no_rings:
6271 stats->rx_packets = pkts;
6272 stats->rx_bytes = bytes;
6273 stats->rx_dropped = dropped;
6274 stats->rx_errors = errors;
6275}
6276
6277static void niu_get_tx_stats(struct niu *np,
6278 struct rtnl_link_stats64 *stats)
6279{
6280 u64 pkts, errors, bytes;
6281 struct tx_ring_info *tx_rings;
6282 int i;
6283
6284 pkts = errors = bytes = 0;
6285
6286 tx_rings = ACCESS_ONCE(np->tx_rings);
6287 if (!tx_rings)
6288 goto no_rings;
6289
6290 for (i = 0; i < np->num_tx_rings; i++) {
6291 struct tx_ring_info *rp = &tx_rings[i];
6292
6293 pkts += rp->tx_packets;
6294 bytes += rp->tx_bytes;
6295 errors += rp->tx_errors;
6296 }
6297
6298no_rings:
6299 stats->tx_packets = pkts;
6300 stats->tx_bytes = bytes;
6301 stats->tx_errors = errors;
6302}
6303
6304static struct rtnl_link_stats64 *niu_get_stats(struct net_device *dev,
6305 struct rtnl_link_stats64 *stats)
6306{
6307 struct niu *np = netdev_priv(dev);
6308
6309 if (netif_running(dev)) {
6310 niu_get_rx_stats(np, stats);
6311 niu_get_tx_stats(np, stats);
6312 }
6313
6314 return stats;
6315}
6316
6317static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6318{
6319 int i;
6320
6321 for (i = 0; i < 16; i++)
6322 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6323}
6324
6325static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6326{
6327 int i;
6328
6329 for (i = 0; i < 16; i++)
6330 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6331}
6332
6333static void niu_load_hash(struct niu *np, u16 *hash)
6334{
6335 if (np->flags & NIU_FLAGS_XMAC)
6336 niu_load_hash_xmac(np, hash);
6337 else
6338 niu_load_hash_bmac(np, hash);
6339}
6340
6341static void niu_set_rx_mode(struct net_device *dev)
6342{
6343 struct niu *np = netdev_priv(dev);
6344 int i, alt_cnt, err;
6345 struct netdev_hw_addr *ha;
6346 unsigned long flags;
6347 u16 hash[16] = { 0, };
6348
6349 spin_lock_irqsave(&np->lock, flags);
6350 niu_enable_rx_mac(np, 0);
6351
6352 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6353 if (dev->flags & IFF_PROMISC)
6354 np->flags |= NIU_FLAGS_PROMISC;
6355 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6356 np->flags |= NIU_FLAGS_MCAST;
6357
6358 alt_cnt = netdev_uc_count(dev);
6359 if (alt_cnt > niu_num_alt_addr(np)) {
6360 alt_cnt = 0;
6361 np->flags |= NIU_FLAGS_PROMISC;
6362 }
6363
6364 if (alt_cnt) {
6365 int index = 0;
6366
6367 netdev_for_each_uc_addr(ha, dev) {
6368 err = niu_set_alt_mac(np, index, ha->addr);
6369 if (err)
6370 netdev_warn(dev, "Error %d adding alt mac %d\n",
6371 err, index);
6372 err = niu_enable_alt_mac(np, index, 1);
6373 if (err)
6374 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6375 err, index);
6376
6377 index++;
6378 }
6379 } else {
6380 int alt_start;
6381 if (np->flags & NIU_FLAGS_XMAC)
6382 alt_start = 0;
6383 else
6384 alt_start = 1;
6385 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6386 err = niu_enable_alt_mac(np, i, 0);
6387 if (err)
6388 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6389 err, i);
6390 }
6391 }
6392 if (dev->flags & IFF_ALLMULTI) {
6393 for (i = 0; i < 16; i++)
6394 hash[i] = 0xffff;
6395 } else if (!netdev_mc_empty(dev)) {
6396 netdev_for_each_mc_addr(ha, dev) {
6397 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6398
6399 crc >>= 24;
6400 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6401 }
6402 }
6403
6404 if (np->flags & NIU_FLAGS_MCAST)
6405 niu_load_hash(np, hash);
6406
6407 niu_enable_rx_mac(np, 1);
6408 spin_unlock_irqrestore(&np->lock, flags);
6409}
6410
6411static int niu_set_mac_addr(struct net_device *dev, void *p)
6412{
6413 struct niu *np = netdev_priv(dev);
6414 struct sockaddr *addr = p;
6415 unsigned long flags;
6416
6417 if (!is_valid_ether_addr(addr->sa_data))
6418 return -EINVAL;
6419
6420 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6421
6422 if (!netif_running(dev))
6423 return 0;
6424
6425 spin_lock_irqsave(&np->lock, flags);
6426 niu_enable_rx_mac(np, 0);
6427 niu_set_primary_mac(np, dev->dev_addr);
6428 niu_enable_rx_mac(np, 1);
6429 spin_unlock_irqrestore(&np->lock, flags);
6430
6431 return 0;
6432}
6433
6434static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6435{
6436 return -EOPNOTSUPP;
6437}
6438
6439static void niu_netif_stop(struct niu *np)
6440{
6441 np->dev->trans_start = jiffies; /* prevent tx timeout */
6442
6443 niu_disable_napi(np);
6444
6445 netif_tx_disable(np->dev);
6446}
6447
6448static void niu_netif_start(struct niu *np)
6449{
6450 /* NOTE: unconditional netif_wake_queue is only appropriate
6451 * so long as all callers are assured to have free tx slots
6452 * (such as after niu_init_hw).
6453 */
6454 netif_tx_wake_all_queues(np->dev);
6455
6456 niu_enable_napi(np);
6457
6458 niu_enable_interrupts(np, 1);
6459}
6460
6461static void niu_reset_buffers(struct niu *np)
6462{
6463 int i, j, k, err;
6464
6465 if (np->rx_rings) {
6466 for (i = 0; i < np->num_rx_rings; i++) {
6467 struct rx_ring_info *rp = &np->rx_rings[i];
6468
6469 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6470 struct page *page;
6471
6472 page = rp->rxhash[j];
6473 while (page) {
6474 struct page *next =
6475 (struct page *) page->mapping;
6476 u64 base = page->index;
6477 base = base >> RBR_DESCR_ADDR_SHIFT;
6478 rp->rbr[k++] = cpu_to_le32(base);
6479 page = next;
6480 }
6481 }
6482 for (; k < MAX_RBR_RING_SIZE; k++) {
6483 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6484 if (unlikely(err))
6485 break;
6486 }
6487
6488 rp->rbr_index = rp->rbr_table_size - 1;
6489 rp->rcr_index = 0;
6490 rp->rbr_pending = 0;
6491 rp->rbr_refill_pending = 0;
6492 }
6493 }
6494 if (np->tx_rings) {
6495 for (i = 0; i < np->num_tx_rings; i++) {
6496 struct tx_ring_info *rp = &np->tx_rings[i];
6497
6498 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6499 if (rp->tx_buffs[j].skb)
6500 (void) release_tx_packet(np, rp, j);
6501 }
6502
6503 rp->pending = MAX_TX_RING_SIZE;
6504 rp->prod = 0;
6505 rp->cons = 0;
6506 rp->wrap_bit = 0;
6507 }
6508 }
6509}
6510
6511static void niu_reset_task(struct work_struct *work)
6512{
6513 struct niu *np = container_of(work, struct niu, reset_task);
6514 unsigned long flags;
6515 int err;
6516
6517 spin_lock_irqsave(&np->lock, flags);
6518 if (!netif_running(np->dev)) {
6519 spin_unlock_irqrestore(&np->lock, flags);
6520 return;
6521 }
6522
6523 spin_unlock_irqrestore(&np->lock, flags);
6524
6525 del_timer_sync(&np->timer);
6526
6527 niu_netif_stop(np);
6528
6529 spin_lock_irqsave(&np->lock, flags);
6530
6531 niu_stop_hw(np);
6532
6533 spin_unlock_irqrestore(&np->lock, flags);
6534
6535 niu_reset_buffers(np);
6536
6537 spin_lock_irqsave(&np->lock, flags);
6538
6539 err = niu_init_hw(np);
6540 if (!err) {
6541 np->timer.expires = jiffies + HZ;
6542 add_timer(&np->timer);
6543 niu_netif_start(np);
6544 }
6545
6546 spin_unlock_irqrestore(&np->lock, flags);
6547}
6548
6549static void niu_tx_timeout(struct net_device *dev)
6550{
6551 struct niu *np = netdev_priv(dev);
6552
6553 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6554 dev->name);
6555
6556 schedule_work(&np->reset_task);
6557}
6558
6559static void niu_set_txd(struct tx_ring_info *rp, int index,
6560 u64 mapping, u64 len, u64 mark,
6561 u64 n_frags)
6562{
6563 __le64 *desc = &rp->descr[index];
6564
6565 *desc = cpu_to_le64(mark |
6566 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6567 (len << TX_DESC_TR_LEN_SHIFT) |
6568 (mapping & TX_DESC_SAD));
6569}
6570
6571static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6572 u64 pad_bytes, u64 len)
6573{
6574 u16 eth_proto, eth_proto_inner;
6575 u64 csum_bits, l3off, ihl, ret;
6576 u8 ip_proto;
6577 int ipv6;
6578
6579 eth_proto = be16_to_cpu(ehdr->h_proto);
6580 eth_proto_inner = eth_proto;
6581 if (eth_proto == ETH_P_8021Q) {
6582 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6583 __be16 val = vp->h_vlan_encapsulated_proto;
6584
6585 eth_proto_inner = be16_to_cpu(val);
6586 }
6587
6588 ipv6 = ihl = 0;
6589 switch (skb->protocol) {
6590 case cpu_to_be16(ETH_P_IP):
6591 ip_proto = ip_hdr(skb)->protocol;
6592 ihl = ip_hdr(skb)->ihl;
6593 break;
6594 case cpu_to_be16(ETH_P_IPV6):
6595 ip_proto = ipv6_hdr(skb)->nexthdr;
6596 ihl = (40 >> 2);
6597 ipv6 = 1;
6598 break;
6599 default:
6600 ip_proto = ihl = 0;
6601 break;
6602 }
6603
6604 csum_bits = TXHDR_CSUM_NONE;
6605 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6606 u64 start, stuff;
6607
6608 csum_bits = (ip_proto == IPPROTO_TCP ?
6609 TXHDR_CSUM_TCP :
6610 (ip_proto == IPPROTO_UDP ?
6611 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6612
6613 start = skb_checksum_start_offset(skb) -
6614 (pad_bytes + sizeof(struct tx_pkt_hdr));
6615 stuff = start + skb->csum_offset;
6616
6617 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6618 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6619 }
6620
6621 l3off = skb_network_offset(skb) -
6622 (pad_bytes + sizeof(struct tx_pkt_hdr));
6623
6624 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6625 (len << TXHDR_LEN_SHIFT) |
6626 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6627 (ihl << TXHDR_IHL_SHIFT) |
6628 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6629 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6630 (ipv6 ? TXHDR_IP_VER : 0) |
6631 csum_bits);
6632
6633 return ret;
6634}
6635
6636static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6637 struct net_device *dev)
6638{
6639 struct niu *np = netdev_priv(dev);
6640 unsigned long align, headroom;
6641 struct netdev_queue *txq;
6642 struct tx_ring_info *rp;
6643 struct tx_pkt_hdr *tp;
6644 unsigned int len, nfg;
6645 struct ethhdr *ehdr;
6646 int prod, i, tlen;
6647 u64 mapping, mrk;
6648
6649 i = skb_get_queue_mapping(skb);
6650 rp = &np->tx_rings[i];
6651 txq = netdev_get_tx_queue(dev, i);
6652
6653 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6654 netif_tx_stop_queue(txq);
6655 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6656 rp->tx_errors++;
6657 return NETDEV_TX_BUSY;
6658 }
6659
6660 if (skb->len < ETH_ZLEN) {
6661 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6662
6663 if (skb_pad(skb, pad_bytes))
6664 goto out;
6665 skb_put(skb, pad_bytes);
6666 }
6667
6668 len = sizeof(struct tx_pkt_hdr) + 15;
6669 if (skb_headroom(skb) < len) {
6670 struct sk_buff *skb_new;
6671
6672 skb_new = skb_realloc_headroom(skb, len);
6673 if (!skb_new) {
6674 rp->tx_errors++;
6675 goto out_drop;
6676 }
6677 kfree_skb(skb);
6678 skb = skb_new;
6679 } else
6680 skb_orphan(skb);
6681
6682 align = ((unsigned long) skb->data & (16 - 1));
6683 headroom = align + sizeof(struct tx_pkt_hdr);
6684
6685 ehdr = (struct ethhdr *) skb->data;
6686 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6687
6688 len = skb->len - sizeof(struct tx_pkt_hdr);
6689 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6690 tp->resv = 0;
6691
6692 len = skb_headlen(skb);
6693 mapping = np->ops->map_single(np->device, skb->data,
6694 len, DMA_TO_DEVICE);
6695
6696 prod = rp->prod;
6697
6698 rp->tx_buffs[prod].skb = skb;
6699 rp->tx_buffs[prod].mapping = mapping;
6700
6701 mrk = TX_DESC_SOP;
6702 if (++rp->mark_counter == rp->mark_freq) {
6703 rp->mark_counter = 0;
6704 mrk |= TX_DESC_MARK;
6705 rp->mark_pending++;
6706 }
6707
6708 tlen = len;
6709 nfg = skb_shinfo(skb)->nr_frags;
6710 while (tlen > 0) {
6711 tlen -= MAX_TX_DESC_LEN;
6712 nfg++;
6713 }
6714
6715 while (len > 0) {
6716 unsigned int this_len = len;
6717
6718 if (this_len > MAX_TX_DESC_LEN)
6719 this_len = MAX_TX_DESC_LEN;
6720
6721 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6722 mrk = nfg = 0;
6723
6724 prod = NEXT_TX(rp, prod);
6725 mapping += this_len;
6726 len -= this_len;
6727 }
6728
6729 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6730 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6731
6732 len = skb_frag_size(frag);
6733 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6734 frag->page_offset, len,
6735 DMA_TO_DEVICE);
6736
6737 rp->tx_buffs[prod].skb = NULL;
6738 rp->tx_buffs[prod].mapping = mapping;
6739
6740 niu_set_txd(rp, prod, mapping, len, 0, 0);
6741
6742 prod = NEXT_TX(rp, prod);
6743 }
6744
6745 if (prod < rp->prod)
6746 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6747 rp->prod = prod;
6748
6749 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6750
6751 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6752 netif_tx_stop_queue(txq);
6753 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6754 netif_tx_wake_queue(txq);
6755 }
6756
6757out:
6758 return NETDEV_TX_OK;
6759
6760out_drop:
6761 rp->tx_errors++;
6762 kfree_skb(skb);
6763 goto out;
6764}
6765
6766static int niu_change_mtu(struct net_device *dev, int new_mtu)
6767{
6768 struct niu *np = netdev_priv(dev);
6769 int err, orig_jumbo, new_jumbo;
6770
6771 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6772 return -EINVAL;
6773
6774 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6775 new_jumbo = (new_mtu > ETH_DATA_LEN);
6776
6777 dev->mtu = new_mtu;
6778
6779 if (!netif_running(dev) ||
6780 (orig_jumbo == new_jumbo))
6781 return 0;
6782
6783 niu_full_shutdown(np, dev);
6784
6785 niu_free_channels(np);
6786
6787 niu_enable_napi(np);
6788
6789 err = niu_alloc_channels(np);
6790 if (err)
6791 return err;
6792
6793 spin_lock_irq(&np->lock);
6794
6795 err = niu_init_hw(np);
6796 if (!err) {
6797 init_timer(&np->timer);
6798 np->timer.expires = jiffies + HZ;
6799 np->timer.data = (unsigned long) np;
6800 np->timer.function = niu_timer;
6801
6802 err = niu_enable_interrupts(np, 1);
6803 if (err)
6804 niu_stop_hw(np);
6805 }
6806
6807 spin_unlock_irq(&np->lock);
6808
6809 if (!err) {
6810 netif_tx_start_all_queues(dev);
6811 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6812 netif_carrier_on(dev);
6813
6814 add_timer(&np->timer);
6815 }
6816
6817 return err;
6818}
6819
6820static void niu_get_drvinfo(struct net_device *dev,
6821 struct ethtool_drvinfo *info)
6822{
6823 struct niu *np = netdev_priv(dev);
6824 struct niu_vpd *vpd = &np->vpd;
6825
6826 strcpy(info->driver, DRV_MODULE_NAME);
6827 strcpy(info->version, DRV_MODULE_VERSION);
6828 sprintf(info->fw_version, "%d.%d",
6829 vpd->fcode_major, vpd->fcode_minor);
6830 if (np->parent->plat_type != PLAT_TYPE_NIU)
6831 strcpy(info->bus_info, pci_name(np->pdev));
6832}
6833
6834static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6835{
6836 struct niu *np = netdev_priv(dev);
6837 struct niu_link_config *lp;
6838
6839 lp = &np->link_config;
6840
6841 memset(cmd, 0, sizeof(*cmd));
6842 cmd->phy_address = np->phy_addr;
6843 cmd->supported = lp->supported;
6844 cmd->advertising = lp->active_advertising;
6845 cmd->autoneg = lp->active_autoneg;
6846 ethtool_cmd_speed_set(cmd, lp->active_speed);
6847 cmd->duplex = lp->active_duplex;
6848 cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6849 cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6850 XCVR_EXTERNAL : XCVR_INTERNAL;
6851
6852 return 0;
6853}
6854
6855static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6856{
6857 struct niu *np = netdev_priv(dev);
6858 struct niu_link_config *lp = &np->link_config;
6859
6860 lp->advertising = cmd->advertising;
6861 lp->speed = ethtool_cmd_speed(cmd);
6862 lp->duplex = cmd->duplex;
6863 lp->autoneg = cmd->autoneg;
6864 return niu_init_link(np);
6865}
6866
6867static u32 niu_get_msglevel(struct net_device *dev)
6868{
6869 struct niu *np = netdev_priv(dev);
6870 return np->msg_enable;
6871}
6872
6873static void niu_set_msglevel(struct net_device *dev, u32 value)
6874{
6875 struct niu *np = netdev_priv(dev);
6876 np->msg_enable = value;
6877}
6878
6879static int niu_nway_reset(struct net_device *dev)
6880{
6881 struct niu *np = netdev_priv(dev);
6882
6883 if (np->link_config.autoneg)
6884 return niu_init_link(np);
6885
6886 return 0;
6887}
6888
6889static int niu_get_eeprom_len(struct net_device *dev)
6890{
6891 struct niu *np = netdev_priv(dev);
6892
6893 return np->eeprom_len;
6894}
6895
6896static int niu_get_eeprom(struct net_device *dev,
6897 struct ethtool_eeprom *eeprom, u8 *data)
6898{
6899 struct niu *np = netdev_priv(dev);
6900 u32 offset, len, val;
6901
6902 offset = eeprom->offset;
6903 len = eeprom->len;
6904
6905 if (offset + len < offset)
6906 return -EINVAL;
6907 if (offset >= np->eeprom_len)
6908 return -EINVAL;
6909 if (offset + len > np->eeprom_len)
6910 len = eeprom->len = np->eeprom_len - offset;
6911
6912 if (offset & 3) {
6913 u32 b_offset, b_count;
6914
6915 b_offset = offset & 3;
6916 b_count = 4 - b_offset;
6917 if (b_count > len)
6918 b_count = len;
6919
6920 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6921 memcpy(data, ((char *)&val) + b_offset, b_count);
6922 data += b_count;
6923 len -= b_count;
6924 offset += b_count;
6925 }
6926 while (len >= 4) {
6927 val = nr64(ESPC_NCR(offset / 4));
6928 memcpy(data, &val, 4);
6929 data += 4;
6930 len -= 4;
6931 offset += 4;
6932 }
6933 if (len) {
6934 val = nr64(ESPC_NCR(offset / 4));
6935 memcpy(data, &val, len);
6936 }
6937 return 0;
6938}
6939
6940static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6941{
6942 switch (flow_type) {
6943 case TCP_V4_FLOW:
6944 case TCP_V6_FLOW:
6945 *pid = IPPROTO_TCP;
6946 break;
6947 case UDP_V4_FLOW:
6948 case UDP_V6_FLOW:
6949 *pid = IPPROTO_UDP;
6950 break;
6951 case SCTP_V4_FLOW:
6952 case SCTP_V6_FLOW:
6953 *pid = IPPROTO_SCTP;
6954 break;
6955 case AH_V4_FLOW:
6956 case AH_V6_FLOW:
6957 *pid = IPPROTO_AH;
6958 break;
6959 case ESP_V4_FLOW:
6960 case ESP_V6_FLOW:
6961 *pid = IPPROTO_ESP;
6962 break;
6963 default:
6964 *pid = 0;
6965 break;
6966 }
6967}
6968
6969static int niu_class_to_ethflow(u64 class, int *flow_type)
6970{
6971 switch (class) {
6972 case CLASS_CODE_TCP_IPV4:
6973 *flow_type = TCP_V4_FLOW;
6974 break;
6975 case CLASS_CODE_UDP_IPV4:
6976 *flow_type = UDP_V4_FLOW;
6977 break;
6978 case CLASS_CODE_AH_ESP_IPV4:
6979 *flow_type = AH_V4_FLOW;
6980 break;
6981 case CLASS_CODE_SCTP_IPV4:
6982 *flow_type = SCTP_V4_FLOW;
6983 break;
6984 case CLASS_CODE_TCP_IPV6:
6985 *flow_type = TCP_V6_FLOW;
6986 break;
6987 case CLASS_CODE_UDP_IPV6:
6988 *flow_type = UDP_V6_FLOW;
6989 break;
6990 case CLASS_CODE_AH_ESP_IPV6:
6991 *flow_type = AH_V6_FLOW;
6992 break;
6993 case CLASS_CODE_SCTP_IPV6:
6994 *flow_type = SCTP_V6_FLOW;
6995 break;
6996 case CLASS_CODE_USER_PROG1:
6997 case CLASS_CODE_USER_PROG2:
6998 case CLASS_CODE_USER_PROG3:
6999 case CLASS_CODE_USER_PROG4:
7000 *flow_type = IP_USER_FLOW;
7001 break;
7002 default:
7003 return 0;
7004 }
7005
7006 return 1;
7007}
7008
7009static int niu_ethflow_to_class(int flow_type, u64 *class)
7010{
7011 switch (flow_type) {
7012 case TCP_V4_FLOW:
7013 *class = CLASS_CODE_TCP_IPV4;
7014 break;
7015 case UDP_V4_FLOW:
7016 *class = CLASS_CODE_UDP_IPV4;
7017 break;
7018 case AH_ESP_V4_FLOW:
7019 case AH_V4_FLOW:
7020 case ESP_V4_FLOW:
7021 *class = CLASS_CODE_AH_ESP_IPV4;
7022 break;
7023 case SCTP_V4_FLOW:
7024 *class = CLASS_CODE_SCTP_IPV4;
7025 break;
7026 case TCP_V6_FLOW:
7027 *class = CLASS_CODE_TCP_IPV6;
7028 break;
7029 case UDP_V6_FLOW:
7030 *class = CLASS_CODE_UDP_IPV6;
7031 break;
7032 case AH_ESP_V6_FLOW:
7033 case AH_V6_FLOW:
7034 case ESP_V6_FLOW:
7035 *class = CLASS_CODE_AH_ESP_IPV6;
7036 break;
7037 case SCTP_V6_FLOW:
7038 *class = CLASS_CODE_SCTP_IPV6;
7039 break;
7040 default:
7041 return 0;
7042 }
7043
7044 return 1;
7045}
7046
7047static u64 niu_flowkey_to_ethflow(u64 flow_key)
7048{
7049 u64 ethflow = 0;
7050
7051 if (flow_key & FLOW_KEY_L2DA)
7052 ethflow |= RXH_L2DA;
7053 if (flow_key & FLOW_KEY_VLAN)
7054 ethflow |= RXH_VLAN;
7055 if (flow_key & FLOW_KEY_IPSA)
7056 ethflow |= RXH_IP_SRC;
7057 if (flow_key & FLOW_KEY_IPDA)
7058 ethflow |= RXH_IP_DST;
7059 if (flow_key & FLOW_KEY_PROTO)
7060 ethflow |= RXH_L3_PROTO;
7061 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7062 ethflow |= RXH_L4_B_0_1;
7063 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7064 ethflow |= RXH_L4_B_2_3;
7065
7066 return ethflow;
7067
7068}
7069
7070static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7071{
7072 u64 key = 0;
7073
7074 if (ethflow & RXH_L2DA)
7075 key |= FLOW_KEY_L2DA;
7076 if (ethflow & RXH_VLAN)
7077 key |= FLOW_KEY_VLAN;
7078 if (ethflow & RXH_IP_SRC)
7079 key |= FLOW_KEY_IPSA;
7080 if (ethflow & RXH_IP_DST)
7081 key |= FLOW_KEY_IPDA;
7082 if (ethflow & RXH_L3_PROTO)
7083 key |= FLOW_KEY_PROTO;
7084 if (ethflow & RXH_L4_B_0_1)
7085 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7086 if (ethflow & RXH_L4_B_2_3)
7087 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7088
7089 *flow_key = key;
7090
7091 return 1;
7092
7093}
7094
7095static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7096{
7097 u64 class;
7098
7099 nfc->data = 0;
7100
7101 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7102 return -EINVAL;
7103
7104 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7105 TCAM_KEY_DISC)
7106 nfc->data = RXH_DISCARD;
7107 else
7108 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7109 CLASS_CODE_USER_PROG1]);
7110 return 0;
7111}
7112
7113static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7114 struct ethtool_rx_flow_spec *fsp)
7115{
7116 u32 tmp;
7117 u16 prt;
7118
7119 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7120 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7121
7122 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7123 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7124
7125 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7126 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7127
7128 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7129 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7130
7131 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7132 TCAM_V4KEY2_TOS_SHIFT;
7133 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7134 TCAM_V4KEY2_TOS_SHIFT;
7135
7136 switch (fsp->flow_type) {
7137 case TCP_V4_FLOW:
7138 case UDP_V4_FLOW:
7139 case SCTP_V4_FLOW:
7140 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7141 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7142 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7143
7144 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7145 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7146 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7147
7148 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7149 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7150 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7151
7152 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7153 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7154 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7155 break;
7156 case AH_V4_FLOW:
7157 case ESP_V4_FLOW:
7158 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7159 TCAM_V4KEY2_PORT_SPI_SHIFT;
7160 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7161
7162 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7163 TCAM_V4KEY2_PORT_SPI_SHIFT;
7164 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7165 break;
7166 case IP_USER_FLOW:
7167 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7168 TCAM_V4KEY2_PORT_SPI_SHIFT;
7169 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7170
7171 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7172 TCAM_V4KEY2_PORT_SPI_SHIFT;
7173 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7174
7175 fsp->h_u.usr_ip4_spec.proto =
7176 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7177 TCAM_V4KEY2_PROTO_SHIFT;
7178 fsp->m_u.usr_ip4_spec.proto =
7179 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7180 TCAM_V4KEY2_PROTO_SHIFT;
7181
7182 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7183 break;
7184 default:
7185 break;
7186 }
7187}
7188
7189static int niu_get_ethtool_tcam_entry(struct niu *np,
7190 struct ethtool_rxnfc *nfc)
7191{
7192 struct niu_parent *parent = np->parent;
7193 struct niu_tcam_entry *tp;
7194 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7195 u16 idx;
7196 u64 class;
7197 int ret = 0;
7198
7199 idx = tcam_get_index(np, (u16)nfc->fs.location);
7200
7201 tp = &parent->tcam[idx];
7202 if (!tp->valid) {
7203 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7204 parent->index, (u16)nfc->fs.location, idx);
7205 return -EINVAL;
7206 }
7207
7208 /* fill the flow spec entry */
7209 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7210 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7211 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7212
7213 if (ret < 0) {
7214 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7215 parent->index);
7216 ret = -EINVAL;
7217 goto out;
7218 }
7219
7220 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7221 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7222 TCAM_V4KEY2_PROTO_SHIFT;
7223 if (proto == IPPROTO_ESP) {
7224 if (fsp->flow_type == AH_V4_FLOW)
7225 fsp->flow_type = ESP_V4_FLOW;
7226 else
7227 fsp->flow_type = ESP_V6_FLOW;
7228 }
7229 }
7230
7231 switch (fsp->flow_type) {
7232 case TCP_V4_FLOW:
7233 case UDP_V4_FLOW:
7234 case SCTP_V4_FLOW:
7235 case AH_V4_FLOW:
7236 case ESP_V4_FLOW:
7237 niu_get_ip4fs_from_tcam_key(tp, fsp);
7238 break;
7239 case TCP_V6_FLOW:
7240 case UDP_V6_FLOW:
7241 case SCTP_V6_FLOW:
7242 case AH_V6_FLOW:
7243 case ESP_V6_FLOW:
7244 /* Not yet implemented */
7245 ret = -EINVAL;
7246 break;
7247 case IP_USER_FLOW:
7248 niu_get_ip4fs_from_tcam_key(tp, fsp);
7249 break;
7250 default:
7251 ret = -EINVAL;
7252 break;
7253 }
7254
7255 if (ret < 0)
7256 goto out;
7257
7258 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7259 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7260 else
7261 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7262 TCAM_ASSOCDATA_OFFSET_SHIFT;
7263
7264 /* put the tcam size here */
7265 nfc->data = tcam_get_size(np);
7266out:
7267 return ret;
7268}
7269
7270static int niu_get_ethtool_tcam_all(struct niu *np,
7271 struct ethtool_rxnfc *nfc,
7272 u32 *rule_locs)
7273{
7274 struct niu_parent *parent = np->parent;
7275 struct niu_tcam_entry *tp;
7276 int i, idx, cnt;
7277 unsigned long flags;
7278 int ret = 0;
7279
7280 /* put the tcam size here */
7281 nfc->data = tcam_get_size(np);
7282
7283 niu_lock_parent(np, flags);
7284 for (cnt = 0, i = 0; i < nfc->data; i++) {
7285 idx = tcam_get_index(np, i);
7286 tp = &parent->tcam[idx];
7287 if (!tp->valid)
7288 continue;
7289 if (cnt == nfc->rule_cnt) {
7290 ret = -EMSGSIZE;
7291 break;
7292 }
7293 rule_locs[cnt] = i;
7294 cnt++;
7295 }
7296 niu_unlock_parent(np, flags);
7297
7298 nfc->rule_cnt = cnt;
7299
7300 return ret;
7301}
7302
7303static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7304 u32 *rule_locs)
7305{
7306 struct niu *np = netdev_priv(dev);
7307 int ret = 0;
7308
7309 switch (cmd->cmd) {
7310 case ETHTOOL_GRXFH:
7311 ret = niu_get_hash_opts(np, cmd);
7312 break;
7313 case ETHTOOL_GRXRINGS:
7314 cmd->data = np->num_rx_rings;
7315 break;
7316 case ETHTOOL_GRXCLSRLCNT:
7317 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7318 break;
7319 case ETHTOOL_GRXCLSRULE:
7320 ret = niu_get_ethtool_tcam_entry(np, cmd);
7321 break;
7322 case ETHTOOL_GRXCLSRLALL:
7323 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7324 break;
7325 default:
7326 ret = -EINVAL;
7327 break;
7328 }
7329
7330 return ret;
7331}
7332
7333static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7334{
7335 u64 class;
7336 u64 flow_key = 0;
7337 unsigned long flags;
7338
7339 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7340 return -EINVAL;
7341
7342 if (class < CLASS_CODE_USER_PROG1 ||
7343 class > CLASS_CODE_SCTP_IPV6)
7344 return -EINVAL;
7345
7346 if (nfc->data & RXH_DISCARD) {
7347 niu_lock_parent(np, flags);
7348 flow_key = np->parent->tcam_key[class -
7349 CLASS_CODE_USER_PROG1];
7350 flow_key |= TCAM_KEY_DISC;
7351 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7352 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7353 niu_unlock_parent(np, flags);
7354 return 0;
7355 } else {
7356 /* Discard was set before, but is not set now */
7357 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7358 TCAM_KEY_DISC) {
7359 niu_lock_parent(np, flags);
7360 flow_key = np->parent->tcam_key[class -
7361 CLASS_CODE_USER_PROG1];
7362 flow_key &= ~TCAM_KEY_DISC;
7363 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7364 flow_key);
7365 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7366 flow_key;
7367 niu_unlock_parent(np, flags);
7368 }
7369 }
7370
7371 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7372 return -EINVAL;
7373
7374 niu_lock_parent(np, flags);
7375 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7376 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7377 niu_unlock_parent(np, flags);
7378
7379 return 0;
7380}
7381
7382static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7383 struct niu_tcam_entry *tp,
7384 int l2_rdc_tab, u64 class)
7385{
7386 u8 pid = 0;
7387 u32 sip, dip, sipm, dipm, spi, spim;
7388 u16 sport, dport, spm, dpm;
7389
7390 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7391 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7392 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7393 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7394
7395 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7396 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7397 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7398 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7399
7400 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7401 tp->key[3] |= dip;
7402
7403 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7404 tp->key_mask[3] |= dipm;
7405
7406 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7407 TCAM_V4KEY2_TOS_SHIFT);
7408 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7409 TCAM_V4KEY2_TOS_SHIFT);
7410 switch (fsp->flow_type) {
7411 case TCP_V4_FLOW:
7412 case UDP_V4_FLOW:
7413 case SCTP_V4_FLOW:
7414 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7415 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7416 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7417 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7418
7419 tp->key[2] |= (((u64)sport << 16) | dport);
7420 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7421 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7422 break;
7423 case AH_V4_FLOW:
7424 case ESP_V4_FLOW:
7425 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7426 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7427
7428 tp->key[2] |= spi;
7429 tp->key_mask[2] |= spim;
7430 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7431 break;
7432 case IP_USER_FLOW:
7433 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7434 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7435
7436 tp->key[2] |= spi;
7437 tp->key_mask[2] |= spim;
7438 pid = fsp->h_u.usr_ip4_spec.proto;
7439 break;
7440 default:
7441 break;
7442 }
7443
7444 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7445 if (pid) {
7446 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7447 }
7448}
7449
7450static int niu_add_ethtool_tcam_entry(struct niu *np,
7451 struct ethtool_rxnfc *nfc)
7452{
7453 struct niu_parent *parent = np->parent;
7454 struct niu_tcam_entry *tp;
7455 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7456 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7457 int l2_rdc_table = rdc_table->first_table_num;
7458 u16 idx;
7459 u64 class;
7460 unsigned long flags;
7461 int err, ret;
7462
7463 ret = 0;
7464
7465 idx = nfc->fs.location;
7466 if (idx >= tcam_get_size(np))
7467 return -EINVAL;
7468
7469 if (fsp->flow_type == IP_USER_FLOW) {
7470 int i;
7471 int add_usr_cls = 0;
7472 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7473 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7474
7475 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7476 return -EINVAL;
7477
7478 niu_lock_parent(np, flags);
7479
7480 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7481 if (parent->l3_cls[i]) {
7482 if (uspec->proto == parent->l3_cls_pid[i]) {
7483 class = parent->l3_cls[i];
7484 parent->l3_cls_refcnt[i]++;
7485 add_usr_cls = 1;
7486 break;
7487 }
7488 } else {
7489 /* Program new user IP class */
7490 switch (i) {
7491 case 0:
7492 class = CLASS_CODE_USER_PROG1;
7493 break;
7494 case 1:
7495 class = CLASS_CODE_USER_PROG2;
7496 break;
7497 case 2:
7498 class = CLASS_CODE_USER_PROG3;
7499 break;
7500 case 3:
7501 class = CLASS_CODE_USER_PROG4;
7502 break;
7503 default:
7504 break;
7505 }
7506 ret = tcam_user_ip_class_set(np, class, 0,
7507 uspec->proto,
7508 uspec->tos,
7509 umask->tos);
7510 if (ret)
7511 goto out;
7512
7513 ret = tcam_user_ip_class_enable(np, class, 1);
7514 if (ret)
7515 goto out;
7516 parent->l3_cls[i] = class;
7517 parent->l3_cls_pid[i] = uspec->proto;
7518 parent->l3_cls_refcnt[i]++;
7519 add_usr_cls = 1;
7520 break;
7521 }
7522 }
7523 if (!add_usr_cls) {
7524 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7525 parent->index, __func__, uspec->proto);
7526 ret = -EINVAL;
7527 goto out;
7528 }
7529 niu_unlock_parent(np, flags);
7530 } else {
7531 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7532 return -EINVAL;
7533 }
7534 }
7535
7536 niu_lock_parent(np, flags);
7537
7538 idx = tcam_get_index(np, idx);
7539 tp = &parent->tcam[idx];
7540
7541 memset(tp, 0, sizeof(*tp));
7542
7543 /* fill in the tcam key and mask */
7544 switch (fsp->flow_type) {
7545 case TCP_V4_FLOW:
7546 case UDP_V4_FLOW:
7547 case SCTP_V4_FLOW:
7548 case AH_V4_FLOW:
7549 case ESP_V4_FLOW:
7550 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7551 break;
7552 case TCP_V6_FLOW:
7553 case UDP_V6_FLOW:
7554 case SCTP_V6_FLOW:
7555 case AH_V6_FLOW:
7556 case ESP_V6_FLOW:
7557 /* Not yet implemented */
7558 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7559 parent->index, __func__, fsp->flow_type);
7560 ret = -EINVAL;
7561 goto out;
7562 case IP_USER_FLOW:
7563 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7564 break;
7565 default:
7566 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7567 parent->index, __func__, fsp->flow_type);
7568 ret = -EINVAL;
7569 goto out;
7570 }
7571
7572 /* fill in the assoc data */
7573 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7574 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7575 } else {
7576 if (fsp->ring_cookie >= np->num_rx_rings) {
7577 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7578 parent->index, __func__,
7579 (long long)fsp->ring_cookie);
7580 ret = -EINVAL;
7581 goto out;
7582 }
7583 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7584 (fsp->ring_cookie <<
7585 TCAM_ASSOCDATA_OFFSET_SHIFT));
7586 }
7587
7588 err = tcam_write(np, idx, tp->key, tp->key_mask);
7589 if (err) {
7590 ret = -EINVAL;
7591 goto out;
7592 }
7593 err = tcam_assoc_write(np, idx, tp->assoc_data);
7594 if (err) {
7595 ret = -EINVAL;
7596 goto out;
7597 }
7598
7599 /* validate the entry */
7600 tp->valid = 1;
7601 np->clas.tcam_valid_entries++;
7602out:
7603 niu_unlock_parent(np, flags);
7604
7605 return ret;
7606}
7607
7608static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7609{
7610 struct niu_parent *parent = np->parent;
7611 struct niu_tcam_entry *tp;
7612 u16 idx;
7613 unsigned long flags;
7614 u64 class;
7615 int ret = 0;
7616
7617 if (loc >= tcam_get_size(np))
7618 return -EINVAL;
7619
7620 niu_lock_parent(np, flags);
7621
7622 idx = tcam_get_index(np, loc);
7623 tp = &parent->tcam[idx];
7624
7625 /* if the entry is of a user defined class, then update*/
7626 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7627 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7628
7629 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7630 int i;
7631 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7632 if (parent->l3_cls[i] == class) {
7633 parent->l3_cls_refcnt[i]--;
7634 if (!parent->l3_cls_refcnt[i]) {
7635 /* disable class */
7636 ret = tcam_user_ip_class_enable(np,
7637 class,
7638 0);
7639 if (ret)
7640 goto out;
7641 parent->l3_cls[i] = 0;
7642 parent->l3_cls_pid[i] = 0;
7643 }
7644 break;
7645 }
7646 }
7647 if (i == NIU_L3_PROG_CLS) {
7648 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7649 parent->index, __func__,
7650 (unsigned long long)class);
7651 ret = -EINVAL;
7652 goto out;
7653 }
7654 }
7655
7656 ret = tcam_flush(np, idx);
7657 if (ret)
7658 goto out;
7659
7660 /* invalidate the entry */
7661 tp->valid = 0;
7662 np->clas.tcam_valid_entries--;
7663out:
7664 niu_unlock_parent(np, flags);
7665
7666 return ret;
7667}
7668
7669static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7670{
7671 struct niu *np = netdev_priv(dev);
7672 int ret = 0;
7673
7674 switch (cmd->cmd) {
7675 case ETHTOOL_SRXFH:
7676 ret = niu_set_hash_opts(np, cmd);
7677 break;
7678 case ETHTOOL_SRXCLSRLINS:
7679 ret = niu_add_ethtool_tcam_entry(np, cmd);
7680 break;
7681 case ETHTOOL_SRXCLSRLDEL:
7682 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7683 break;
7684 default:
7685 ret = -EINVAL;
7686 break;
7687 }
7688
7689 return ret;
7690}
7691
7692static const struct {
7693 const char string[ETH_GSTRING_LEN];
7694} niu_xmac_stat_keys[] = {
7695 { "tx_frames" },
7696 { "tx_bytes" },
7697 { "tx_fifo_errors" },
7698 { "tx_overflow_errors" },
7699 { "tx_max_pkt_size_errors" },
7700 { "tx_underflow_errors" },
7701 { "rx_local_faults" },
7702 { "rx_remote_faults" },
7703 { "rx_link_faults" },
7704 { "rx_align_errors" },
7705 { "rx_frags" },
7706 { "rx_mcasts" },
7707 { "rx_bcasts" },
7708 { "rx_hist_cnt1" },
7709 { "rx_hist_cnt2" },
7710 { "rx_hist_cnt3" },
7711 { "rx_hist_cnt4" },
7712 { "rx_hist_cnt5" },
7713 { "rx_hist_cnt6" },
7714 { "rx_hist_cnt7" },
7715 { "rx_octets" },
7716 { "rx_code_violations" },
7717 { "rx_len_errors" },
7718 { "rx_crc_errors" },
7719 { "rx_underflows" },
7720 { "rx_overflows" },
7721 { "pause_off_state" },
7722 { "pause_on_state" },
7723 { "pause_received" },
7724};
7725
7726#define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7727
7728static const struct {
7729 const char string[ETH_GSTRING_LEN];
7730} niu_bmac_stat_keys[] = {
7731 { "tx_underflow_errors" },
7732 { "tx_max_pkt_size_errors" },
7733 { "tx_bytes" },
7734 { "tx_frames" },
7735 { "rx_overflows" },
7736 { "rx_frames" },
7737 { "rx_align_errors" },
7738 { "rx_crc_errors" },
7739 { "rx_len_errors" },
7740 { "pause_off_state" },
7741 { "pause_on_state" },
7742 { "pause_received" },
7743};
7744
7745#define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7746
7747static const struct {
7748 const char string[ETH_GSTRING_LEN];
7749} niu_rxchan_stat_keys[] = {
7750 { "rx_channel" },
7751 { "rx_packets" },
7752 { "rx_bytes" },
7753 { "rx_dropped" },
7754 { "rx_errors" },
7755};
7756
7757#define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7758
7759static const struct {
7760 const char string[ETH_GSTRING_LEN];
7761} niu_txchan_stat_keys[] = {
7762 { "tx_channel" },
7763 { "tx_packets" },
7764 { "tx_bytes" },
7765 { "tx_errors" },
7766};
7767
7768#define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7769
7770static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7771{
7772 struct niu *np = netdev_priv(dev);
7773 int i;
7774
7775 if (stringset != ETH_SS_STATS)
7776 return;
7777
7778 if (np->flags & NIU_FLAGS_XMAC) {
7779 memcpy(data, niu_xmac_stat_keys,
7780 sizeof(niu_xmac_stat_keys));
7781 data += sizeof(niu_xmac_stat_keys);
7782 } else {
7783 memcpy(data, niu_bmac_stat_keys,
7784 sizeof(niu_bmac_stat_keys));
7785 data += sizeof(niu_bmac_stat_keys);
7786 }
7787 for (i = 0; i < np->num_rx_rings; i++) {
7788 memcpy(data, niu_rxchan_stat_keys,
7789 sizeof(niu_rxchan_stat_keys));
7790 data += sizeof(niu_rxchan_stat_keys);
7791 }
7792 for (i = 0; i < np->num_tx_rings; i++) {
7793 memcpy(data, niu_txchan_stat_keys,
7794 sizeof(niu_txchan_stat_keys));
7795 data += sizeof(niu_txchan_stat_keys);
7796 }
7797}
7798
7799static int niu_get_sset_count(struct net_device *dev, int stringset)
7800{
7801 struct niu *np = netdev_priv(dev);
7802
7803 if (stringset != ETH_SS_STATS)
7804 return -EINVAL;
7805
7806 return (np->flags & NIU_FLAGS_XMAC ?
7807 NUM_XMAC_STAT_KEYS :
7808 NUM_BMAC_STAT_KEYS) +
7809 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7810 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7811}
7812
7813static void niu_get_ethtool_stats(struct net_device *dev,
7814 struct ethtool_stats *stats, u64 *data)
7815{
7816 struct niu *np = netdev_priv(dev);
7817 int i;
7818
7819 niu_sync_mac_stats(np);
7820 if (np->flags & NIU_FLAGS_XMAC) {
7821 memcpy(data, &np->mac_stats.xmac,
7822 sizeof(struct niu_xmac_stats));
7823 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7824 } else {
7825 memcpy(data, &np->mac_stats.bmac,
7826 sizeof(struct niu_bmac_stats));
7827 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7828 }
7829 for (i = 0; i < np->num_rx_rings; i++) {
7830 struct rx_ring_info *rp = &np->rx_rings[i];
7831
7832 niu_sync_rx_discard_stats(np, rp, 0);
7833
7834 data[0] = rp->rx_channel;
7835 data[1] = rp->rx_packets;
7836 data[2] = rp->rx_bytes;
7837 data[3] = rp->rx_dropped;
7838 data[4] = rp->rx_errors;
7839 data += 5;
7840 }
7841 for (i = 0; i < np->num_tx_rings; i++) {
7842 struct tx_ring_info *rp = &np->tx_rings[i];
7843
7844 data[0] = rp->tx_channel;
7845 data[1] = rp->tx_packets;
7846 data[2] = rp->tx_bytes;
7847 data[3] = rp->tx_errors;
7848 data += 4;
7849 }
7850}
7851
7852static u64 niu_led_state_save(struct niu *np)
7853{
7854 if (np->flags & NIU_FLAGS_XMAC)
7855 return nr64_mac(XMAC_CONFIG);
7856 else
7857 return nr64_mac(BMAC_XIF_CONFIG);
7858}
7859
7860static void niu_led_state_restore(struct niu *np, u64 val)
7861{
7862 if (np->flags & NIU_FLAGS_XMAC)
7863 nw64_mac(XMAC_CONFIG, val);
7864 else
7865 nw64_mac(BMAC_XIF_CONFIG, val);
7866}
7867
7868static void niu_force_led(struct niu *np, int on)
7869{
7870 u64 val, reg, bit;
7871
7872 if (np->flags & NIU_FLAGS_XMAC) {
7873 reg = XMAC_CONFIG;
7874 bit = XMAC_CONFIG_FORCE_LED_ON;
7875 } else {
7876 reg = BMAC_XIF_CONFIG;
7877 bit = BMAC_XIF_CONFIG_LINK_LED;
7878 }
7879
7880 val = nr64_mac(reg);
7881 if (on)
7882 val |= bit;
7883 else
7884 val &= ~bit;
7885 nw64_mac(reg, val);
7886}
7887
7888static int niu_set_phys_id(struct net_device *dev,
7889 enum ethtool_phys_id_state state)
7890
7891{
7892 struct niu *np = netdev_priv(dev);
7893
7894 if (!netif_running(dev))
7895 return -EAGAIN;
7896
7897 switch (state) {
7898 case ETHTOOL_ID_ACTIVE:
7899 np->orig_led_state = niu_led_state_save(np);
7900 return 1; /* cycle on/off once per second */
7901
7902 case ETHTOOL_ID_ON:
7903 niu_force_led(np, 1);
7904 break;
7905
7906 case ETHTOOL_ID_OFF:
7907 niu_force_led(np, 0);
7908 break;
7909
7910 case ETHTOOL_ID_INACTIVE:
7911 niu_led_state_restore(np, np->orig_led_state);
7912 }
7913
7914 return 0;
7915}
7916
7917static const struct ethtool_ops niu_ethtool_ops = {
7918 .get_drvinfo = niu_get_drvinfo,
7919 .get_link = ethtool_op_get_link,
7920 .get_msglevel = niu_get_msglevel,
7921 .set_msglevel = niu_set_msglevel,
7922 .nway_reset = niu_nway_reset,
7923 .get_eeprom_len = niu_get_eeprom_len,
7924 .get_eeprom = niu_get_eeprom,
7925 .get_settings = niu_get_settings,
7926 .set_settings = niu_set_settings,
7927 .get_strings = niu_get_strings,
7928 .get_sset_count = niu_get_sset_count,
7929 .get_ethtool_stats = niu_get_ethtool_stats,
7930 .set_phys_id = niu_set_phys_id,
7931 .get_rxnfc = niu_get_nfc,
7932 .set_rxnfc = niu_set_nfc,
7933};
7934
7935static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7936 int ldg, int ldn)
7937{
7938 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7939 return -EINVAL;
7940 if (ldn < 0 || ldn > LDN_MAX)
7941 return -EINVAL;
7942
7943 parent->ldg_map[ldn] = ldg;
7944
7945 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7946 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7947 * the firmware, and we're not supposed to change them.
7948 * Validate the mapping, because if it's wrong we probably
7949 * won't get any interrupts and that's painful to debug.
7950 */
7951 if (nr64(LDG_NUM(ldn)) != ldg) {
7952 dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7953 np->port, ldn, ldg,
7954 (unsigned long long) nr64(LDG_NUM(ldn)));
7955 return -EINVAL;
7956 }
7957 } else
7958 nw64(LDG_NUM(ldn), ldg);
7959
7960 return 0;
7961}
7962
7963static int niu_set_ldg_timer_res(struct niu *np, int res)
7964{
7965 if (res < 0 || res > LDG_TIMER_RES_VAL)
7966 return -EINVAL;
7967
7968
7969 nw64(LDG_TIMER_RES, res);
7970
7971 return 0;
7972}
7973
7974static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7975{
7976 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7977 (func < 0 || func > 3) ||
7978 (vector < 0 || vector > 0x1f))
7979 return -EINVAL;
7980
7981 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7982
7983 return 0;
7984}
7985
7986static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7987{
7988 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7989 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7990 int limit;
7991
7992 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7993 return -EINVAL;
7994
7995 frame = frame_base;
7996 nw64(ESPC_PIO_STAT, frame);
7997 limit = 64;
7998 do {
7999 udelay(5);
8000 frame = nr64(ESPC_PIO_STAT);
8001 if (frame & ESPC_PIO_STAT_READ_END)
8002 break;
8003 } while (limit--);
8004 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8005 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8006 (unsigned long long) frame);
8007 return -ENODEV;
8008 }
8009
8010 frame = frame_base;
8011 nw64(ESPC_PIO_STAT, frame);
8012 limit = 64;
8013 do {
8014 udelay(5);
8015 frame = nr64(ESPC_PIO_STAT);
8016 if (frame & ESPC_PIO_STAT_READ_END)
8017 break;
8018 } while (limit--);
8019 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8020 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8021 (unsigned long long) frame);
8022 return -ENODEV;
8023 }
8024
8025 frame = nr64(ESPC_PIO_STAT);
8026 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8027}
8028
8029static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8030{
8031 int err = niu_pci_eeprom_read(np, off);
8032 u16 val;
8033
8034 if (err < 0)
8035 return err;
8036 val = (err << 8);
8037 err = niu_pci_eeprom_read(np, off + 1);
8038 if (err < 0)
8039 return err;
8040 val |= (err & 0xff);
8041
8042 return val;
8043}
8044
8045static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8046{
8047 int err = niu_pci_eeprom_read(np, off);
8048 u16 val;
8049
8050 if (err < 0)
8051 return err;
8052
8053 val = (err & 0xff);
8054 err = niu_pci_eeprom_read(np, off + 1);
8055 if (err < 0)
8056 return err;
8057
8058 val |= (err & 0xff) << 8;
8059
8060 return val;
8061}
8062
8063static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8064 u32 off,
8065 char *namebuf,
8066 int namebuf_len)
8067{
8068 int i;
8069
8070 for (i = 0; i < namebuf_len; i++) {
8071 int err = niu_pci_eeprom_read(np, off + i);
8072 if (err < 0)
8073 return err;
8074 *namebuf++ = err;
8075 if (!err)
8076 break;
8077 }
8078 if (i >= namebuf_len)
8079 return -EINVAL;
8080
8081 return i + 1;
8082}
8083
8084static void __devinit niu_vpd_parse_version(struct niu *np)
8085{
8086 struct niu_vpd *vpd = &np->vpd;
8087 int len = strlen(vpd->version) + 1;
8088 const char *s = vpd->version;
8089 int i;
8090
8091 for (i = 0; i < len - 5; i++) {
8092 if (!strncmp(s + i, "FCode ", 6))
8093 break;
8094 }
8095 if (i >= len - 5)
8096 return;
8097
8098 s += i + 5;
8099 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8100
8101 netif_printk(np, probe, KERN_DEBUG, np->dev,
8102 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8103 vpd->fcode_major, vpd->fcode_minor);
8104 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8105 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8106 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8107 np->flags |= NIU_FLAGS_VPD_VALID;
8108}
8109
8110/* ESPC_PIO_EN_ENABLE must be set */
8111static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8112 u32 start, u32 end)
8113{
8114 unsigned int found_mask = 0;
8115#define FOUND_MASK_MODEL 0x00000001
8116#define FOUND_MASK_BMODEL 0x00000002
8117#define FOUND_MASK_VERS 0x00000004
8118#define FOUND_MASK_MAC 0x00000008
8119#define FOUND_MASK_NMAC 0x00000010
8120#define FOUND_MASK_PHY 0x00000020
8121#define FOUND_MASK_ALL 0x0000003f
8122
8123 netif_printk(np, probe, KERN_DEBUG, np->dev,
8124 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8125 while (start < end) {
8126 int len, err, prop_len;
8127 char namebuf[64];
8128 u8 *prop_buf;
8129 int max_len;
8130
8131 if (found_mask == FOUND_MASK_ALL) {
8132 niu_vpd_parse_version(np);
8133 return 1;
8134 }
8135
8136 err = niu_pci_eeprom_read(np, start + 2);
8137 if (err < 0)
8138 return err;
8139 len = err;
8140 start += 3;
8141
8142 prop_len = niu_pci_eeprom_read(np, start + 4);
8143 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8144 if (err < 0)
8145 return err;
8146
8147 prop_buf = NULL;
8148 max_len = 0;
8149 if (!strcmp(namebuf, "model")) {
8150 prop_buf = np->vpd.model;
8151 max_len = NIU_VPD_MODEL_MAX;
8152 found_mask |= FOUND_MASK_MODEL;
8153 } else if (!strcmp(namebuf, "board-model")) {
8154 prop_buf = np->vpd.board_model;
8155 max_len = NIU_VPD_BD_MODEL_MAX;
8156 found_mask |= FOUND_MASK_BMODEL;
8157 } else if (!strcmp(namebuf, "version")) {
8158 prop_buf = np->vpd.version;
8159 max_len = NIU_VPD_VERSION_MAX;
8160 found_mask |= FOUND_MASK_VERS;
8161 } else if (!strcmp(namebuf, "local-mac-address")) {
8162 prop_buf = np->vpd.local_mac;
8163 max_len = ETH_ALEN;
8164 found_mask |= FOUND_MASK_MAC;
8165 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8166 prop_buf = &np->vpd.mac_num;
8167 max_len = 1;
8168 found_mask |= FOUND_MASK_NMAC;
8169 } else if (!strcmp(namebuf, "phy-type")) {
8170 prop_buf = np->vpd.phy_type;
8171 max_len = NIU_VPD_PHY_TYPE_MAX;
8172 found_mask |= FOUND_MASK_PHY;
8173 }
8174
8175 if (max_len && prop_len > max_len) {
8176 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8177 return -EINVAL;
8178 }
8179
8180 if (prop_buf) {
8181 u32 off = start + 5 + err;
8182 int i;
8183
8184 netif_printk(np, probe, KERN_DEBUG, np->dev,
8185 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8186 namebuf, prop_len);
8187 for (i = 0; i < prop_len; i++)
8188 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8189 }
8190
8191 start += len;
8192 }
8193
8194 return 0;
8195}
8196
8197/* ESPC_PIO_EN_ENABLE must be set */
8198static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8199{
8200 u32 offset;
8201 int err;
8202
8203 err = niu_pci_eeprom_read16_swp(np, start + 1);
8204 if (err < 0)
8205 return;
8206
8207 offset = err + 3;
8208
8209 while (start + offset < ESPC_EEPROM_SIZE) {
8210 u32 here = start + offset;
8211 u32 end;
8212
8213 err = niu_pci_eeprom_read(np, here);
8214 if (err != 0x90)
8215 return;
8216
8217 err = niu_pci_eeprom_read16_swp(np, here + 1);
8218 if (err < 0)
8219 return;
8220
8221 here = start + offset + 3;
8222 end = start + offset + err;
8223
8224 offset += err;
8225
8226 err = niu_pci_vpd_scan_props(np, here, end);
8227 if (err < 0 || err == 1)
8228 return;
8229 }
8230}
8231
8232/* ESPC_PIO_EN_ENABLE must be set */
8233static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8234{
8235 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8236 int err;
8237
8238 while (start < end) {
8239 ret = start;
8240
8241 /* ROM header signature? */
8242 err = niu_pci_eeprom_read16(np, start + 0);
8243 if (err != 0x55aa)
8244 return 0;
8245
8246 /* Apply offset to PCI data structure. */
8247 err = niu_pci_eeprom_read16(np, start + 23);
8248 if (err < 0)
8249 return 0;
8250 start += err;
8251
8252 /* Check for "PCIR" signature. */
8253 err = niu_pci_eeprom_read16(np, start + 0);
8254 if (err != 0x5043)
8255 return 0;
8256 err = niu_pci_eeprom_read16(np, start + 2);
8257 if (err != 0x4952)
8258 return 0;
8259
8260 /* Check for OBP image type. */
8261 err = niu_pci_eeprom_read(np, start + 20);
8262 if (err < 0)
8263 return 0;
8264 if (err != 0x01) {
8265 err = niu_pci_eeprom_read(np, ret + 2);
8266 if (err < 0)
8267 return 0;
8268
8269 start = ret + (err * 512);
8270 continue;
8271 }
8272
8273 err = niu_pci_eeprom_read16_swp(np, start + 8);
8274 if (err < 0)
8275 return err;
8276 ret += err;
8277
8278 err = niu_pci_eeprom_read(np, ret + 0);
8279 if (err != 0x82)
8280 return 0;
8281
8282 return ret;
8283 }
8284
8285 return 0;
8286}
8287
8288static int __devinit niu_phy_type_prop_decode(struct niu *np,
8289 const char *phy_prop)
8290{
8291 if (!strcmp(phy_prop, "mif")) {
8292 /* 1G copper, MII */
8293 np->flags &= ~(NIU_FLAGS_FIBER |
8294 NIU_FLAGS_10G);
8295 np->mac_xcvr = MAC_XCVR_MII;
8296 } else if (!strcmp(phy_prop, "xgf")) {
8297 /* 10G fiber, XPCS */
8298 np->flags |= (NIU_FLAGS_10G |
8299 NIU_FLAGS_FIBER);
8300 np->mac_xcvr = MAC_XCVR_XPCS;
8301 } else if (!strcmp(phy_prop, "pcs")) {
8302 /* 1G fiber, PCS */
8303 np->flags &= ~NIU_FLAGS_10G;
8304 np->flags |= NIU_FLAGS_FIBER;
8305 np->mac_xcvr = MAC_XCVR_PCS;
8306 } else if (!strcmp(phy_prop, "xgc")) {
8307 /* 10G copper, XPCS */
8308 np->flags |= NIU_FLAGS_10G;
8309 np->flags &= ~NIU_FLAGS_FIBER;
8310 np->mac_xcvr = MAC_XCVR_XPCS;
8311 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8312 /* 10G Serdes or 1G Serdes, default to 10G */
8313 np->flags |= NIU_FLAGS_10G;
8314 np->flags &= ~NIU_FLAGS_FIBER;
8315 np->flags |= NIU_FLAGS_XCVR_SERDES;
8316 np->mac_xcvr = MAC_XCVR_XPCS;
8317 } else {
8318 return -EINVAL;
8319 }
8320 return 0;
8321}
8322
8323static int niu_pci_vpd_get_nports(struct niu *np)
8324{
8325 int ports = 0;
8326
8327 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8328 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8329 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8330 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8331 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8332 ports = 4;
8333 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8334 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8335 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8336 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8337 ports = 2;
8338 }
8339
8340 return ports;
8341}
8342
8343static void __devinit niu_pci_vpd_validate(struct niu *np)
8344{
8345 struct net_device *dev = np->dev;
8346 struct niu_vpd *vpd = &np->vpd;
8347 u8 val8;
8348
8349 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8350 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8351
8352 np->flags &= ~NIU_FLAGS_VPD_VALID;
8353 return;
8354 }
8355
8356 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8357 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8358 np->flags |= NIU_FLAGS_10G;
8359 np->flags &= ~NIU_FLAGS_FIBER;
8360 np->flags |= NIU_FLAGS_XCVR_SERDES;
8361 np->mac_xcvr = MAC_XCVR_PCS;
8362 if (np->port > 1) {
8363 np->flags |= NIU_FLAGS_FIBER;
8364 np->flags &= ~NIU_FLAGS_10G;
8365 }
8366 if (np->flags & NIU_FLAGS_10G)
8367 np->mac_xcvr = MAC_XCVR_XPCS;
8368 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8369 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8370 NIU_FLAGS_HOTPLUG_PHY);
8371 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8372 dev_err(np->device, "Illegal phy string [%s]\n",
8373 np->vpd.phy_type);
8374 dev_err(np->device, "Falling back to SPROM\n");
8375 np->flags &= ~NIU_FLAGS_VPD_VALID;
8376 return;
8377 }
8378
8379 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8380
8381 val8 = dev->perm_addr[5];
8382 dev->perm_addr[5] += np->port;
8383 if (dev->perm_addr[5] < val8)
8384 dev->perm_addr[4]++;
8385
8386 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8387}
8388
8389static int __devinit niu_pci_probe_sprom(struct niu *np)
8390{
8391 struct net_device *dev = np->dev;
8392 int len, i;
8393 u64 val, sum;
8394 u8 val8;
8395
8396 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8397 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8398 len = val / 4;
8399
8400 np->eeprom_len = len;
8401
8402 netif_printk(np, probe, KERN_DEBUG, np->dev,
8403 "SPROM: Image size %llu\n", (unsigned long long)val);
8404
8405 sum = 0;
8406 for (i = 0; i < len; i++) {
8407 val = nr64(ESPC_NCR(i));
8408 sum += (val >> 0) & 0xff;
8409 sum += (val >> 8) & 0xff;
8410 sum += (val >> 16) & 0xff;
8411 sum += (val >> 24) & 0xff;
8412 }
8413 netif_printk(np, probe, KERN_DEBUG, np->dev,
8414 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8415 if ((sum & 0xff) != 0xab) {
8416 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8417 return -EINVAL;
8418 }
8419
8420 val = nr64(ESPC_PHY_TYPE);
8421 switch (np->port) {
8422 case 0:
8423 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8424 ESPC_PHY_TYPE_PORT0_SHIFT;
8425 break;
8426 case 1:
8427 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8428 ESPC_PHY_TYPE_PORT1_SHIFT;
8429 break;
8430 case 2:
8431 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8432 ESPC_PHY_TYPE_PORT2_SHIFT;
8433 break;
8434 case 3:
8435 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8436 ESPC_PHY_TYPE_PORT3_SHIFT;
8437 break;
8438 default:
8439 dev_err(np->device, "Bogus port number %u\n",
8440 np->port);
8441 return -EINVAL;
8442 }
8443 netif_printk(np, probe, KERN_DEBUG, np->dev,
8444 "SPROM: PHY type %x\n", val8);
8445
8446 switch (val8) {
8447 case ESPC_PHY_TYPE_1G_COPPER:
8448 /* 1G copper, MII */
8449 np->flags &= ~(NIU_FLAGS_FIBER |
8450 NIU_FLAGS_10G);
8451 np->mac_xcvr = MAC_XCVR_MII;
8452 break;
8453
8454 case ESPC_PHY_TYPE_1G_FIBER:
8455 /* 1G fiber, PCS */
8456 np->flags &= ~NIU_FLAGS_10G;
8457 np->flags |= NIU_FLAGS_FIBER;
8458 np->mac_xcvr = MAC_XCVR_PCS;
8459 break;
8460
8461 case ESPC_PHY_TYPE_10G_COPPER:
8462 /* 10G copper, XPCS */
8463 np->flags |= NIU_FLAGS_10G;
8464 np->flags &= ~NIU_FLAGS_FIBER;
8465 np->mac_xcvr = MAC_XCVR_XPCS;
8466 break;
8467
8468 case ESPC_PHY_TYPE_10G_FIBER:
8469 /* 10G fiber, XPCS */
8470 np->flags |= (NIU_FLAGS_10G |
8471 NIU_FLAGS_FIBER);
8472 np->mac_xcvr = MAC_XCVR_XPCS;
8473 break;
8474
8475 default:
8476 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8477 return -EINVAL;
8478 }
8479
8480 val = nr64(ESPC_MAC_ADDR0);
8481 netif_printk(np, probe, KERN_DEBUG, np->dev,
8482 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8483 dev->perm_addr[0] = (val >> 0) & 0xff;
8484 dev->perm_addr[1] = (val >> 8) & 0xff;
8485 dev->perm_addr[2] = (val >> 16) & 0xff;
8486 dev->perm_addr[3] = (val >> 24) & 0xff;
8487
8488 val = nr64(ESPC_MAC_ADDR1);
8489 netif_printk(np, probe, KERN_DEBUG, np->dev,
8490 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8491 dev->perm_addr[4] = (val >> 0) & 0xff;
8492 dev->perm_addr[5] = (val >> 8) & 0xff;
8493
8494 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8495 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8496 dev->perm_addr);
8497 return -EINVAL;
8498 }
8499
8500 val8 = dev->perm_addr[5];
8501 dev->perm_addr[5] += np->port;
8502 if (dev->perm_addr[5] < val8)
8503 dev->perm_addr[4]++;
8504
8505 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8506
8507 val = nr64(ESPC_MOD_STR_LEN);
8508 netif_printk(np, probe, KERN_DEBUG, np->dev,
8509 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8510 if (val >= 8 * 4)
8511 return -EINVAL;
8512
8513 for (i = 0; i < val; i += 4) {
8514 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8515
8516 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8517 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8518 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8519 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8520 }
8521 np->vpd.model[val] = '\0';
8522
8523 val = nr64(ESPC_BD_MOD_STR_LEN);
8524 netif_printk(np, probe, KERN_DEBUG, np->dev,
8525 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8526 if (val >= 4 * 4)
8527 return -EINVAL;
8528
8529 for (i = 0; i < val; i += 4) {
8530 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8531
8532 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8533 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8534 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8535 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8536 }
8537 np->vpd.board_model[val] = '\0';
8538
8539 np->vpd.mac_num =
8540 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8541 netif_printk(np, probe, KERN_DEBUG, np->dev,
8542 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8543
8544 return 0;
8545}
8546
8547static int __devinit niu_get_and_validate_port(struct niu *np)
8548{
8549 struct niu_parent *parent = np->parent;
8550
8551 if (np->port <= 1)
8552 np->flags |= NIU_FLAGS_XMAC;
8553
8554 if (!parent->num_ports) {
8555 if (parent->plat_type == PLAT_TYPE_NIU) {
8556 parent->num_ports = 2;
8557 } else {
8558 parent->num_ports = niu_pci_vpd_get_nports(np);
8559 if (!parent->num_ports) {
8560 /* Fall back to SPROM as last resort.
8561 * This will fail on most cards.
8562 */
8563 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8564 ESPC_NUM_PORTS_MACS_VAL;
8565
8566 /* All of the current probing methods fail on
8567 * Maramba on-board parts.
8568 */
8569 if (!parent->num_ports)
8570 parent->num_ports = 4;
8571 }
8572 }
8573 }
8574
8575 if (np->port >= parent->num_ports)
8576 return -ENODEV;
8577
8578 return 0;
8579}
8580
8581static int __devinit phy_record(struct niu_parent *parent,
8582 struct phy_probe_info *p,
8583 int dev_id_1, int dev_id_2, u8 phy_port,
8584 int type)
8585{
8586 u32 id = (dev_id_1 << 16) | dev_id_2;
8587 u8 idx;
8588
8589 if (dev_id_1 < 0 || dev_id_2 < 0)
8590 return 0;
8591 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8592 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8593 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
8594 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
8595 return 0;
8596 } else {
8597 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8598 return 0;
8599 }
8600
8601 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8602 parent->index, id,
8603 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8604 type == PHY_TYPE_PCS ? "PCS" : "MII",
8605 phy_port);
8606
8607 if (p->cur[type] >= NIU_MAX_PORTS) {
8608 pr_err("Too many PHY ports\n");
8609 return -EINVAL;
8610 }
8611 idx = p->cur[type];
8612 p->phy_id[type][idx] = id;
8613 p->phy_port[type][idx] = phy_port;
8614 p->cur[type] = idx + 1;
8615 return 0;
8616}
8617
8618static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8619{
8620 int i;
8621
8622 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8623 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8624 return 1;
8625 }
8626 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8627 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8628 return 1;
8629 }
8630
8631 return 0;
8632}
8633
8634static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8635{
8636 int port, cnt;
8637
8638 cnt = 0;
8639 *lowest = 32;
8640 for (port = 8; port < 32; port++) {
8641 if (port_has_10g(p, port)) {
8642 if (!cnt)
8643 *lowest = port;
8644 cnt++;
8645 }
8646 }
8647
8648 return cnt;
8649}
8650
8651static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8652{
8653 *lowest = 32;
8654 if (p->cur[PHY_TYPE_MII])
8655 *lowest = p->phy_port[PHY_TYPE_MII][0];
8656
8657 return p->cur[PHY_TYPE_MII];
8658}
8659
8660static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8661{
8662 int num_ports = parent->num_ports;
8663 int i;
8664
8665 for (i = 0; i < num_ports; i++) {
8666 parent->rxchan_per_port[i] = (16 / num_ports);
8667 parent->txchan_per_port[i] = (16 / num_ports);
8668
8669 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8670 parent->index, i,
8671 parent->rxchan_per_port[i],
8672 parent->txchan_per_port[i]);
8673 }
8674}
8675
8676static void __devinit niu_divide_channels(struct niu_parent *parent,
8677 int num_10g, int num_1g)
8678{
8679 int num_ports = parent->num_ports;
8680 int rx_chans_per_10g, rx_chans_per_1g;
8681 int tx_chans_per_10g, tx_chans_per_1g;
8682 int i, tot_rx, tot_tx;
8683
8684 if (!num_10g || !num_1g) {
8685 rx_chans_per_10g = rx_chans_per_1g =
8686 (NIU_NUM_RXCHAN / num_ports);
8687 tx_chans_per_10g = tx_chans_per_1g =
8688 (NIU_NUM_TXCHAN / num_ports);
8689 } else {
8690 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8691 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8692 (rx_chans_per_1g * num_1g)) /
8693 num_10g;
8694
8695 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8696 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8697 (tx_chans_per_1g * num_1g)) /
8698 num_10g;
8699 }
8700
8701 tot_rx = tot_tx = 0;
8702 for (i = 0; i < num_ports; i++) {
8703 int type = phy_decode(parent->port_phy, i);
8704
8705 if (type == PORT_TYPE_10G) {
8706 parent->rxchan_per_port[i] = rx_chans_per_10g;
8707 parent->txchan_per_port[i] = tx_chans_per_10g;
8708 } else {
8709 parent->rxchan_per_port[i] = rx_chans_per_1g;
8710 parent->txchan_per_port[i] = tx_chans_per_1g;
8711 }
8712 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8713 parent->index, i,
8714 parent->rxchan_per_port[i],
8715 parent->txchan_per_port[i]);
8716 tot_rx += parent->rxchan_per_port[i];
8717 tot_tx += parent->txchan_per_port[i];
8718 }
8719
8720 if (tot_rx > NIU_NUM_RXCHAN) {
8721 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8722 parent->index, tot_rx);
8723 for (i = 0; i < num_ports; i++)
8724 parent->rxchan_per_port[i] = 1;
8725 }
8726 if (tot_tx > NIU_NUM_TXCHAN) {
8727 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8728 parent->index, tot_tx);
8729 for (i = 0; i < num_ports; i++)
8730 parent->txchan_per_port[i] = 1;
8731 }
8732 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8733 pr_warning("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8734 parent->index, tot_rx, tot_tx);
8735 }
8736}
8737
8738static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8739 int num_10g, int num_1g)
8740{
8741 int i, num_ports = parent->num_ports;
8742 int rdc_group, rdc_groups_per_port;
8743 int rdc_channel_base;
8744
8745 rdc_group = 0;
8746 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8747
8748 rdc_channel_base = 0;
8749
8750 for (i = 0; i < num_ports; i++) {
8751 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8752 int grp, num_channels = parent->rxchan_per_port[i];
8753 int this_channel_offset;
8754
8755 tp->first_table_num = rdc_group;
8756 tp->num_tables = rdc_groups_per_port;
8757 this_channel_offset = 0;
8758 for (grp = 0; grp < tp->num_tables; grp++) {
8759 struct rdc_table *rt = &tp->tables[grp];
8760 int slot;
8761
8762 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8763 parent->index, i, tp->first_table_num + grp);
8764 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8765 rt->rxdma_channel[slot] =
8766 rdc_channel_base + this_channel_offset;
8767
8768 pr_cont("%d ", rt->rxdma_channel[slot]);
8769
8770 if (++this_channel_offset == num_channels)
8771 this_channel_offset = 0;
8772 }
8773 pr_cont("]\n");
8774 }
8775
8776 parent->rdc_default[i] = rdc_channel_base;
8777
8778 rdc_channel_base += num_channels;
8779 rdc_group += rdc_groups_per_port;
8780 }
8781}
8782
8783static int __devinit fill_phy_probe_info(struct niu *np,
8784 struct niu_parent *parent,
8785 struct phy_probe_info *info)
8786{
8787 unsigned long flags;
8788 int port, err;
8789
8790 memset(info, 0, sizeof(*info));
8791
8792 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8793 niu_lock_parent(np, flags);
8794 err = 0;
8795 for (port = 8; port < 32; port++) {
8796 int dev_id_1, dev_id_2;
8797
8798 dev_id_1 = mdio_read(np, port,
8799 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8800 dev_id_2 = mdio_read(np, port,
8801 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8802 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8803 PHY_TYPE_PMA_PMD);
8804 if (err)
8805 break;
8806 dev_id_1 = mdio_read(np, port,
8807 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8808 dev_id_2 = mdio_read(np, port,
8809 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8810 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8811 PHY_TYPE_PCS);
8812 if (err)
8813 break;
8814 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8815 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8816 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8817 PHY_TYPE_MII);
8818 if (err)
8819 break;
8820 }
8821 niu_unlock_parent(np, flags);
8822
8823 return err;
8824}
8825
8826static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8827{
8828 struct phy_probe_info *info = &parent->phy_probe_info;
8829 int lowest_10g, lowest_1g;
8830 int num_10g, num_1g;
8831 u32 val;
8832 int err;
8833
8834 num_10g = num_1g = 0;
8835
8836 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8837 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8838 num_10g = 0;
8839 num_1g = 2;
8840 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8841 parent->num_ports = 4;
8842 val = (phy_encode(PORT_TYPE_1G, 0) |
8843 phy_encode(PORT_TYPE_1G, 1) |
8844 phy_encode(PORT_TYPE_1G, 2) |
8845 phy_encode(PORT_TYPE_1G, 3));
8846 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8847 num_10g = 2;
8848 num_1g = 0;
8849 parent->num_ports = 2;
8850 val = (phy_encode(PORT_TYPE_10G, 0) |
8851 phy_encode(PORT_TYPE_10G, 1));
8852 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8853 (parent->plat_type == PLAT_TYPE_NIU)) {
8854 /* this is the Monza case */
8855 if (np->flags & NIU_FLAGS_10G) {
8856 val = (phy_encode(PORT_TYPE_10G, 0) |
8857 phy_encode(PORT_TYPE_10G, 1));
8858 } else {
8859 val = (phy_encode(PORT_TYPE_1G, 0) |
8860 phy_encode(PORT_TYPE_1G, 1));
8861 }
8862 } else {
8863 err = fill_phy_probe_info(np, parent, info);
8864 if (err)
8865 return err;
8866
8867 num_10g = count_10g_ports(info, &lowest_10g);
8868 num_1g = count_1g_ports(info, &lowest_1g);
8869
8870 switch ((num_10g << 4) | num_1g) {
8871 case 0x24:
8872 if (lowest_1g == 10)
8873 parent->plat_type = PLAT_TYPE_VF_P0;
8874 else if (lowest_1g == 26)
8875 parent->plat_type = PLAT_TYPE_VF_P1;
8876 else
8877 goto unknown_vg_1g_port;
8878
8879 /* fallthru */
8880 case 0x22:
8881 val = (phy_encode(PORT_TYPE_10G, 0) |
8882 phy_encode(PORT_TYPE_10G, 1) |
8883 phy_encode(PORT_TYPE_1G, 2) |
8884 phy_encode(PORT_TYPE_1G, 3));
8885 break;
8886
8887 case 0x20:
8888 val = (phy_encode(PORT_TYPE_10G, 0) |
8889 phy_encode(PORT_TYPE_10G, 1));
8890 break;
8891
8892 case 0x10:
8893 val = phy_encode(PORT_TYPE_10G, np->port);
8894 break;
8895
8896 case 0x14:
8897 if (lowest_1g == 10)
8898 parent->plat_type = PLAT_TYPE_VF_P0;
8899 else if (lowest_1g == 26)
8900 parent->plat_type = PLAT_TYPE_VF_P1;
8901 else
8902 goto unknown_vg_1g_port;
8903
8904 /* fallthru */
8905 case 0x13:
8906 if ((lowest_10g & 0x7) == 0)
8907 val = (phy_encode(PORT_TYPE_10G, 0) |
8908 phy_encode(PORT_TYPE_1G, 1) |
8909 phy_encode(PORT_TYPE_1G, 2) |
8910 phy_encode(PORT_TYPE_1G, 3));
8911 else
8912 val = (phy_encode(PORT_TYPE_1G, 0) |
8913 phy_encode(PORT_TYPE_10G, 1) |
8914 phy_encode(PORT_TYPE_1G, 2) |
8915 phy_encode(PORT_TYPE_1G, 3));
8916 break;
8917
8918 case 0x04:
8919 if (lowest_1g == 10)
8920 parent->plat_type = PLAT_TYPE_VF_P0;
8921 else if (lowest_1g == 26)
8922 parent->plat_type = PLAT_TYPE_VF_P1;
8923 else
8924 goto unknown_vg_1g_port;
8925
8926 val = (phy_encode(PORT_TYPE_1G, 0) |
8927 phy_encode(PORT_TYPE_1G, 1) |
8928 phy_encode(PORT_TYPE_1G, 2) |
8929 phy_encode(PORT_TYPE_1G, 3));
8930 break;
8931
8932 default:
8933 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8934 num_10g, num_1g);
8935 return -EINVAL;
8936 }
8937 }
8938
8939 parent->port_phy = val;
8940
8941 if (parent->plat_type == PLAT_TYPE_NIU)
8942 niu_n2_divide_channels(parent);
8943 else
8944 niu_divide_channels(parent, num_10g, num_1g);
8945
8946 niu_divide_rdc_groups(parent, num_10g, num_1g);
8947
8948 return 0;
8949
8950unknown_vg_1g_port:
8951 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8952 return -EINVAL;
8953}
8954
8955static int __devinit niu_probe_ports(struct niu *np)
8956{
8957 struct niu_parent *parent = np->parent;
8958 int err, i;
8959
8960 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8961 err = walk_phys(np, parent);
8962 if (err)
8963 return err;
8964
8965 niu_set_ldg_timer_res(np, 2);
8966 for (i = 0; i <= LDN_MAX; i++)
8967 niu_ldn_irq_enable(np, i, 0);
8968 }
8969
8970 if (parent->port_phy == PORT_PHY_INVALID)
8971 return -EINVAL;
8972
8973 return 0;
8974}
8975
8976static int __devinit niu_classifier_swstate_init(struct niu *np)
8977{
8978 struct niu_classifier *cp = &np->clas;
8979
8980 cp->tcam_top = (u16) np->port;
8981 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8982 cp->h1_init = 0xffffffff;
8983 cp->h2_init = 0xffff;
8984
8985 return fflp_early_init(np);
8986}
8987
8988static void __devinit niu_link_config_init(struct niu *np)
8989{
8990 struct niu_link_config *lp = &np->link_config;
8991
8992 lp->advertising = (ADVERTISED_10baseT_Half |
8993 ADVERTISED_10baseT_Full |
8994 ADVERTISED_100baseT_Half |
8995 ADVERTISED_100baseT_Full |
8996 ADVERTISED_1000baseT_Half |
8997 ADVERTISED_1000baseT_Full |
8998 ADVERTISED_10000baseT_Full |
8999 ADVERTISED_Autoneg);
9000 lp->speed = lp->active_speed = SPEED_INVALID;
9001 lp->duplex = DUPLEX_FULL;
9002 lp->active_duplex = DUPLEX_INVALID;
9003 lp->autoneg = 1;
9004#if 0
9005 lp->loopback_mode = LOOPBACK_MAC;
9006 lp->active_speed = SPEED_10000;
9007 lp->active_duplex = DUPLEX_FULL;
9008#else
9009 lp->loopback_mode = LOOPBACK_DISABLED;
9010#endif
9011}
9012
9013static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
9014{
9015 switch (np->port) {
9016 case 0:
9017 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9018 np->ipp_off = 0x00000;
9019 np->pcs_off = 0x04000;
9020 np->xpcs_off = 0x02000;
9021 break;
9022
9023 case 1:
9024 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9025 np->ipp_off = 0x08000;
9026 np->pcs_off = 0x0a000;
9027 np->xpcs_off = 0x08000;
9028 break;
9029
9030 case 2:
9031 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9032 np->ipp_off = 0x04000;
9033 np->pcs_off = 0x0e000;
9034 np->xpcs_off = ~0UL;
9035 break;
9036
9037 case 3:
9038 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9039 np->ipp_off = 0x0c000;
9040 np->pcs_off = 0x12000;
9041 np->xpcs_off = ~0UL;
9042 break;
9043
9044 default:
9045 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9046 return -EINVAL;
9047 }
9048
9049 return 0;
9050}
9051
9052static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9053{
9054 struct msix_entry msi_vec[NIU_NUM_LDG];
9055 struct niu_parent *parent = np->parent;
9056 struct pci_dev *pdev = np->pdev;
9057 int i, num_irqs, err;
9058 u8 first_ldg;
9059
9060 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9061 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9062 ldg_num_map[i] = first_ldg + i;
9063
9064 num_irqs = (parent->rxchan_per_port[np->port] +
9065 parent->txchan_per_port[np->port] +
9066 (np->port == 0 ? 3 : 1));
9067 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9068
9069retry:
9070 for (i = 0; i < num_irqs; i++) {
9071 msi_vec[i].vector = 0;
9072 msi_vec[i].entry = i;
9073 }
9074
9075 err = pci_enable_msix(pdev, msi_vec, num_irqs);
9076 if (err < 0) {
9077 np->flags &= ~NIU_FLAGS_MSIX;
9078 return;
9079 }
9080 if (err > 0) {
9081 num_irqs = err;
9082 goto retry;
9083 }
9084
9085 np->flags |= NIU_FLAGS_MSIX;
9086 for (i = 0; i < num_irqs; i++)
9087 np->ldg[i].irq = msi_vec[i].vector;
9088 np->num_ldg = num_irqs;
9089}
9090
9091static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9092{
9093#ifdef CONFIG_SPARC64
9094 struct platform_device *op = np->op;
9095 const u32 *int_prop;
9096 int i;
9097
9098 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9099 if (!int_prop)
9100 return -ENODEV;
9101
9102 for (i = 0; i < op->archdata.num_irqs; i++) {
9103 ldg_num_map[i] = int_prop[i];
9104 np->ldg[i].irq = op->archdata.irqs[i];
9105 }
9106
9107 np->num_ldg = op->archdata.num_irqs;
9108
9109 return 0;
9110#else
9111 return -EINVAL;
9112#endif
9113}
9114
9115static int __devinit niu_ldg_init(struct niu *np)
9116{
9117 struct niu_parent *parent = np->parent;
9118 u8 ldg_num_map[NIU_NUM_LDG];
9119 int first_chan, num_chan;
9120 int i, err, ldg_rotor;
9121 u8 port;
9122
9123 np->num_ldg = 1;
9124 np->ldg[0].irq = np->dev->irq;
9125 if (parent->plat_type == PLAT_TYPE_NIU) {
9126 err = niu_n2_irq_init(np, ldg_num_map);
9127 if (err)
9128 return err;
9129 } else
9130 niu_try_msix(np, ldg_num_map);
9131
9132 port = np->port;
9133 for (i = 0; i < np->num_ldg; i++) {
9134 struct niu_ldg *lp = &np->ldg[i];
9135
9136 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9137
9138 lp->np = np;
9139 lp->ldg_num = ldg_num_map[i];
9140 lp->timer = 2; /* XXX */
9141
9142 /* On N2 NIU the firmware has setup the SID mappings so they go
9143 * to the correct values that will route the LDG to the proper
9144 * interrupt in the NCU interrupt table.
9145 */
9146 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9147 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9148 if (err)
9149 return err;
9150 }
9151 }
9152
9153 /* We adopt the LDG assignment ordering used by the N2 NIU
9154 * 'interrupt' properties because that simplifies a lot of
9155 * things. This ordering is:
9156 *
9157 * MAC
9158 * MIF (if port zero)
9159 * SYSERR (if port zero)
9160 * RX channels
9161 * TX channels
9162 */
9163
9164 ldg_rotor = 0;
9165
9166 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9167 LDN_MAC(port));
9168 if (err)
9169 return err;
9170
9171 ldg_rotor++;
9172 if (ldg_rotor == np->num_ldg)
9173 ldg_rotor = 0;
9174
9175 if (port == 0) {
9176 err = niu_ldg_assign_ldn(np, parent,
9177 ldg_num_map[ldg_rotor],
9178 LDN_MIF);
9179 if (err)
9180 return err;
9181
9182 ldg_rotor++;
9183 if (ldg_rotor == np->num_ldg)
9184 ldg_rotor = 0;
9185
9186 err = niu_ldg_assign_ldn(np, parent,
9187 ldg_num_map[ldg_rotor],
9188 LDN_DEVICE_ERROR);
9189 if (err)
9190 return err;
9191
9192 ldg_rotor++;
9193 if (ldg_rotor == np->num_ldg)
9194 ldg_rotor = 0;
9195
9196 }
9197
9198 first_chan = 0;
9199 for (i = 0; i < port; i++)
9200 first_chan += parent->rxchan_per_port[i];
9201 num_chan = parent->rxchan_per_port[port];
9202
9203 for (i = first_chan; i < (first_chan + num_chan); i++) {
9204 err = niu_ldg_assign_ldn(np, parent,
9205 ldg_num_map[ldg_rotor],
9206 LDN_RXDMA(i));
9207 if (err)
9208 return err;
9209 ldg_rotor++;
9210 if (ldg_rotor == np->num_ldg)
9211 ldg_rotor = 0;
9212 }
9213
9214 first_chan = 0;
9215 for (i = 0; i < port; i++)
9216 first_chan += parent->txchan_per_port[i];
9217 num_chan = parent->txchan_per_port[port];
9218 for (i = first_chan; i < (first_chan + num_chan); i++) {
9219 err = niu_ldg_assign_ldn(np, parent,
9220 ldg_num_map[ldg_rotor],
9221 LDN_TXDMA(i));
9222 if (err)
9223 return err;
9224 ldg_rotor++;
9225 if (ldg_rotor == np->num_ldg)
9226 ldg_rotor = 0;
9227 }
9228
9229 return 0;
9230}
9231
9232static void __devexit niu_ldg_free(struct niu *np)
9233{
9234 if (np->flags & NIU_FLAGS_MSIX)
9235 pci_disable_msix(np->pdev);
9236}
9237
9238static int __devinit niu_get_of_props(struct niu *np)
9239{
9240#ifdef CONFIG_SPARC64
9241 struct net_device *dev = np->dev;
9242 struct device_node *dp;
9243 const char *phy_type;
9244 const u8 *mac_addr;
9245 const char *model;
9246 int prop_len;
9247
9248 if (np->parent->plat_type == PLAT_TYPE_NIU)
9249 dp = np->op->dev.of_node;
9250 else
9251 dp = pci_device_to_OF_node(np->pdev);
9252
9253 phy_type = of_get_property(dp, "phy-type", &prop_len);
9254 if (!phy_type) {
9255 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9256 dp->full_name);
9257 return -EINVAL;
9258 }
9259
9260 if (!strcmp(phy_type, "none"))
9261 return -ENODEV;
9262
9263 strcpy(np->vpd.phy_type, phy_type);
9264
9265 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9266 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9267 dp->full_name, np->vpd.phy_type);
9268 return -EINVAL;
9269 }
9270
9271 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9272 if (!mac_addr) {
9273 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9274 dp->full_name);
9275 return -EINVAL;
9276 }
9277 if (prop_len != dev->addr_len) {
9278 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9279 dp->full_name, prop_len);
9280 }
9281 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9282 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9283 netdev_err(dev, "%s: OF MAC address is invalid\n",
9284 dp->full_name);
9285 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->perm_addr);
9286 return -EINVAL;
9287 }
9288
9289 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9290
9291 model = of_get_property(dp, "model", &prop_len);
9292
9293 if (model)
9294 strcpy(np->vpd.model, model);
9295
9296 if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9297 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9298 NIU_FLAGS_HOTPLUG_PHY);
9299 }
9300
9301 return 0;
9302#else
9303 return -EINVAL;
9304#endif
9305}
9306
9307static int __devinit niu_get_invariants(struct niu *np)
9308{
9309 int err, have_props;
9310 u32 offset;
9311
9312 err = niu_get_of_props(np);
9313 if (err == -ENODEV)
9314 return err;
9315
9316 have_props = !err;
9317
9318 err = niu_init_mac_ipp_pcs_base(np);
9319 if (err)
9320 return err;
9321
9322 if (have_props) {
9323 err = niu_get_and_validate_port(np);
9324 if (err)
9325 return err;
9326
9327 } else {
9328 if (np->parent->plat_type == PLAT_TYPE_NIU)
9329 return -EINVAL;
9330
9331 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9332 offset = niu_pci_vpd_offset(np);
9333 netif_printk(np, probe, KERN_DEBUG, np->dev,
9334 "%s() VPD offset [%08x]\n", __func__, offset);
9335 if (offset)
9336 niu_pci_vpd_fetch(np, offset);
9337 nw64(ESPC_PIO_EN, 0);
9338
9339 if (np->flags & NIU_FLAGS_VPD_VALID) {
9340 niu_pci_vpd_validate(np);
9341 err = niu_get_and_validate_port(np);
9342 if (err)
9343 return err;
9344 }
9345
9346 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9347 err = niu_get_and_validate_port(np);
9348 if (err)
9349 return err;
9350 err = niu_pci_probe_sprom(np);
9351 if (err)
9352 return err;
9353 }
9354 }
9355
9356 err = niu_probe_ports(np);
9357 if (err)
9358 return err;
9359
9360 niu_ldg_init(np);
9361
9362 niu_classifier_swstate_init(np);
9363 niu_link_config_init(np);
9364
9365 err = niu_determine_phy_disposition(np);
9366 if (!err)
9367 err = niu_init_link(np);
9368
9369 return err;
9370}
9371
9372static LIST_HEAD(niu_parent_list);
9373static DEFINE_MUTEX(niu_parent_lock);
9374static int niu_parent_index;
9375
9376static ssize_t show_port_phy(struct device *dev,
9377 struct device_attribute *attr, char *buf)
9378{
9379 struct platform_device *plat_dev = to_platform_device(dev);
9380 struct niu_parent *p = plat_dev->dev.platform_data;
9381 u32 port_phy = p->port_phy;
9382 char *orig_buf = buf;
9383 int i;
9384
9385 if (port_phy == PORT_PHY_UNKNOWN ||
9386 port_phy == PORT_PHY_INVALID)
9387 return 0;
9388
9389 for (i = 0; i < p->num_ports; i++) {
9390 const char *type_str;
9391 int type;
9392
9393 type = phy_decode(port_phy, i);
9394 if (type == PORT_TYPE_10G)
9395 type_str = "10G";
9396 else
9397 type_str = "1G";
9398 buf += sprintf(buf,
9399 (i == 0) ? "%s" : " %s",
9400 type_str);
9401 }
9402 buf += sprintf(buf, "\n");
9403 return buf - orig_buf;
9404}
9405
9406static ssize_t show_plat_type(struct device *dev,
9407 struct device_attribute *attr, char *buf)
9408{
9409 struct platform_device *plat_dev = to_platform_device(dev);
9410 struct niu_parent *p = plat_dev->dev.platform_data;
9411 const char *type_str;
9412
9413 switch (p->plat_type) {
9414 case PLAT_TYPE_ATLAS:
9415 type_str = "atlas";
9416 break;
9417 case PLAT_TYPE_NIU:
9418 type_str = "niu";
9419 break;
9420 case PLAT_TYPE_VF_P0:
9421 type_str = "vf_p0";
9422 break;
9423 case PLAT_TYPE_VF_P1:
9424 type_str = "vf_p1";
9425 break;
9426 default:
9427 type_str = "unknown";
9428 break;
9429 }
9430
9431 return sprintf(buf, "%s\n", type_str);
9432}
9433
9434static ssize_t __show_chan_per_port(struct device *dev,
9435 struct device_attribute *attr, char *buf,
9436 int rx)
9437{
9438 struct platform_device *plat_dev = to_platform_device(dev);
9439 struct niu_parent *p = plat_dev->dev.platform_data;
9440 char *orig_buf = buf;
9441 u8 *arr;
9442 int i;
9443
9444 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9445
9446 for (i = 0; i < p->num_ports; i++) {
9447 buf += sprintf(buf,
9448 (i == 0) ? "%d" : " %d",
9449 arr[i]);
9450 }
9451 buf += sprintf(buf, "\n");
9452
9453 return buf - orig_buf;
9454}
9455
9456static ssize_t show_rxchan_per_port(struct device *dev,
9457 struct device_attribute *attr, char *buf)
9458{
9459 return __show_chan_per_port(dev, attr, buf, 1);
9460}
9461
9462static ssize_t show_txchan_per_port(struct device *dev,
9463 struct device_attribute *attr, char *buf)
9464{
9465 return __show_chan_per_port(dev, attr, buf, 1);
9466}
9467
9468static ssize_t show_num_ports(struct device *dev,
9469 struct device_attribute *attr, char *buf)
9470{
9471 struct platform_device *plat_dev = to_platform_device(dev);
9472 struct niu_parent *p = plat_dev->dev.platform_data;
9473
9474 return sprintf(buf, "%d\n", p->num_ports);
9475}
9476
9477static struct device_attribute niu_parent_attributes[] = {
9478 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9479 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9480 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9481 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9482 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9483 {}
9484};
9485
9486static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9487 union niu_parent_id *id,
9488 u8 ptype)
9489{
9490 struct platform_device *plat_dev;
9491 struct niu_parent *p;
9492 int i;
9493
9494 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9495 NULL, 0);
9496 if (IS_ERR(plat_dev))
9497 return NULL;
9498
9499 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9500 int err = device_create_file(&plat_dev->dev,
9501 &niu_parent_attributes[i]);
9502 if (err)
9503 goto fail_unregister;
9504 }
9505
9506 p = kzalloc(sizeof(*p), GFP_KERNEL);
9507 if (!p)
9508 goto fail_unregister;
9509
9510 p->index = niu_parent_index++;
9511
9512 plat_dev->dev.platform_data = p;
9513 p->plat_dev = plat_dev;
9514
9515 memcpy(&p->id, id, sizeof(*id));
9516 p->plat_type = ptype;
9517 INIT_LIST_HEAD(&p->list);
9518 atomic_set(&p->refcnt, 0);
9519 list_add(&p->list, &niu_parent_list);
9520 spin_lock_init(&p->lock);
9521
9522 p->rxdma_clock_divider = 7500;
9523
9524 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9525 if (p->plat_type == PLAT_TYPE_NIU)
9526 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9527
9528 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9529 int index = i - CLASS_CODE_USER_PROG1;
9530
9531 p->tcam_key[index] = TCAM_KEY_TSEL;
9532 p->flow_key[index] = (FLOW_KEY_IPSA |
9533 FLOW_KEY_IPDA |
9534 FLOW_KEY_PROTO |
9535 (FLOW_KEY_L4_BYTE12 <<
9536 FLOW_KEY_L4_0_SHIFT) |
9537 (FLOW_KEY_L4_BYTE12 <<
9538 FLOW_KEY_L4_1_SHIFT));
9539 }
9540
9541 for (i = 0; i < LDN_MAX + 1; i++)
9542 p->ldg_map[i] = LDG_INVALID;
9543
9544 return p;
9545
9546fail_unregister:
9547 platform_device_unregister(plat_dev);
9548 return NULL;
9549}
9550
9551static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9552 union niu_parent_id *id,
9553 u8 ptype)
9554{
9555 struct niu_parent *p, *tmp;
9556 int port = np->port;
9557
9558 mutex_lock(&niu_parent_lock);
9559 p = NULL;
9560 list_for_each_entry(tmp, &niu_parent_list, list) {
9561 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9562 p = tmp;
9563 break;
9564 }
9565 }
9566 if (!p)
9567 p = niu_new_parent(np, id, ptype);
9568
9569 if (p) {
9570 char port_name[6];
9571 int err;
9572
9573 sprintf(port_name, "port%d", port);
9574 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9575 &np->device->kobj,
9576 port_name);
9577 if (!err) {
9578 p->ports[port] = np;
9579 atomic_inc(&p->refcnt);
9580 }
9581 }
9582 mutex_unlock(&niu_parent_lock);
9583
9584 return p;
9585}
9586
9587static void niu_put_parent(struct niu *np)
9588{
9589 struct niu_parent *p = np->parent;
9590 u8 port = np->port;
9591 char port_name[6];
9592
9593 BUG_ON(!p || p->ports[port] != np);
9594
9595 netif_printk(np, probe, KERN_DEBUG, np->dev,
9596 "%s() port[%u]\n", __func__, port);
9597
9598 sprintf(port_name, "port%d", port);
9599
9600 mutex_lock(&niu_parent_lock);
9601
9602 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9603
9604 p->ports[port] = NULL;
9605 np->parent = NULL;
9606
9607 if (atomic_dec_and_test(&p->refcnt)) {
9608 list_del(&p->list);
9609 platform_device_unregister(p->plat_dev);
9610 }
9611
9612 mutex_unlock(&niu_parent_lock);
9613}
9614
9615static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9616 u64 *handle, gfp_t flag)
9617{
9618 dma_addr_t dh;
9619 void *ret;
9620
9621 ret = dma_alloc_coherent(dev, size, &dh, flag);
9622 if (ret)
9623 *handle = dh;
9624 return ret;
9625}
9626
9627static void niu_pci_free_coherent(struct device *dev, size_t size,
9628 void *cpu_addr, u64 handle)
9629{
9630 dma_free_coherent(dev, size, cpu_addr, handle);
9631}
9632
9633static u64 niu_pci_map_page(struct device *dev, struct page *page,
9634 unsigned long offset, size_t size,
9635 enum dma_data_direction direction)
9636{
9637 return dma_map_page(dev, page, offset, size, direction);
9638}
9639
9640static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9641 size_t size, enum dma_data_direction direction)
9642{
9643 dma_unmap_page(dev, dma_address, size, direction);
9644}
9645
9646static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9647 size_t size,
9648 enum dma_data_direction direction)
9649{
9650 return dma_map_single(dev, cpu_addr, size, direction);
9651}
9652
9653static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9654 size_t size,
9655 enum dma_data_direction direction)
9656{
9657 dma_unmap_single(dev, dma_address, size, direction);
9658}
9659
9660static const struct niu_ops niu_pci_ops = {
9661 .alloc_coherent = niu_pci_alloc_coherent,
9662 .free_coherent = niu_pci_free_coherent,
9663 .map_page = niu_pci_map_page,
9664 .unmap_page = niu_pci_unmap_page,
9665 .map_single = niu_pci_map_single,
9666 .unmap_single = niu_pci_unmap_single,
9667};
9668
9669static void __devinit niu_driver_version(void)
9670{
9671 static int niu_version_printed;
9672
9673 if (niu_version_printed++ == 0)
9674 pr_info("%s", version);
9675}
9676
9677static struct net_device * __devinit niu_alloc_and_init(
9678 struct device *gen_dev, struct pci_dev *pdev,
9679 struct platform_device *op, const struct niu_ops *ops,
9680 u8 port)
9681{
9682 struct net_device *dev;
9683 struct niu *np;
9684
9685 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9686 if (!dev) {
9687 dev_err(gen_dev, "Etherdev alloc failed, aborting\n");
9688 return NULL;
9689 }
9690
9691 SET_NETDEV_DEV(dev, gen_dev);
9692
9693 np = netdev_priv(dev);
9694 np->dev = dev;
9695 np->pdev = pdev;
9696 np->op = op;
9697 np->device = gen_dev;
9698 np->ops = ops;
9699
9700 np->msg_enable = niu_debug;
9701
9702 spin_lock_init(&np->lock);
9703 INIT_WORK(&np->reset_task, niu_reset_task);
9704
9705 np->port = port;
9706
9707 return dev;
9708}
9709
9710static const struct net_device_ops niu_netdev_ops = {
9711 .ndo_open = niu_open,
9712 .ndo_stop = niu_close,
9713 .ndo_start_xmit = niu_start_xmit,
9714 .ndo_get_stats64 = niu_get_stats,
9715 .ndo_set_rx_mode = niu_set_rx_mode,
9716 .ndo_validate_addr = eth_validate_addr,
9717 .ndo_set_mac_address = niu_set_mac_addr,
9718 .ndo_do_ioctl = niu_ioctl,
9719 .ndo_tx_timeout = niu_tx_timeout,
9720 .ndo_change_mtu = niu_change_mtu,
9721};
9722
9723static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9724{
9725 dev->netdev_ops = &niu_netdev_ops;
9726 dev->ethtool_ops = &niu_ethtool_ops;
9727 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9728}
9729
9730static void __devinit niu_device_announce(struct niu *np)
9731{
9732 struct net_device *dev = np->dev;
9733
9734 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9735
9736 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9737 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9738 dev->name,
9739 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9740 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9741 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9742 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9743 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9744 np->vpd.phy_type);
9745 } else {
9746 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9747 dev->name,
9748 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9749 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9750 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9751 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9752 "COPPER")),
9753 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9754 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9755 np->vpd.phy_type);
9756 }
9757}
9758
9759static void __devinit niu_set_basic_features(struct net_device *dev)
9760{
9761 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9762 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9763}
9764
9765static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9766 const struct pci_device_id *ent)
9767{
9768 union niu_parent_id parent_id;
9769 struct net_device *dev;
9770 struct niu *np;
9771 int err, pos;
9772 u64 dma_mask;
9773 u16 val16;
9774
9775 niu_driver_version();
9776
9777 err = pci_enable_device(pdev);
9778 if (err) {
9779 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9780 return err;
9781 }
9782
9783 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9784 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9785 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9786 err = -ENODEV;
9787 goto err_out_disable_pdev;
9788 }
9789
9790 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9791 if (err) {
9792 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9793 goto err_out_disable_pdev;
9794 }
9795
9796 pos = pci_pcie_cap(pdev);
9797 if (pos <= 0) {
9798 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9799 goto err_out_free_res;
9800 }
9801
9802 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9803 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9804 if (!dev) {
9805 err = -ENOMEM;
9806 goto err_out_free_res;
9807 }
9808 np = netdev_priv(dev);
9809
9810 memset(&parent_id, 0, sizeof(parent_id));
9811 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9812 parent_id.pci.bus = pdev->bus->number;
9813 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9814
9815 np->parent = niu_get_parent(np, &parent_id,
9816 PLAT_TYPE_ATLAS);
9817 if (!np->parent) {
9818 err = -ENOMEM;
9819 goto err_out_free_dev;
9820 }
9821
9822 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9823 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9824 val16 |= (PCI_EXP_DEVCTL_CERE |
9825 PCI_EXP_DEVCTL_NFERE |
9826 PCI_EXP_DEVCTL_FERE |
9827 PCI_EXP_DEVCTL_URRE |
9828 PCI_EXP_DEVCTL_RELAX_EN);
9829 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9830
9831 dma_mask = DMA_BIT_MASK(44);
9832 err = pci_set_dma_mask(pdev, dma_mask);
9833 if (!err) {
9834 dev->features |= NETIF_F_HIGHDMA;
9835 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9836 if (err) {
9837 dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9838 goto err_out_release_parent;
9839 }
9840 }
9841 if (err || dma_mask == DMA_BIT_MASK(32)) {
9842 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9843 if (err) {
9844 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9845 goto err_out_release_parent;
9846 }
9847 }
9848
9849 niu_set_basic_features(dev);
9850
9851 dev->priv_flags |= IFF_UNICAST_FLT;
9852
9853 np->regs = pci_ioremap_bar(pdev, 0);
9854 if (!np->regs) {
9855 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9856 err = -ENOMEM;
9857 goto err_out_release_parent;
9858 }
9859
9860 pci_set_master(pdev);
9861 pci_save_state(pdev);
9862
9863 dev->irq = pdev->irq;
9864
9865 niu_assign_netdev_ops(dev);
9866
9867 err = niu_get_invariants(np);
9868 if (err) {
9869 if (err != -ENODEV)
9870 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9871 goto err_out_iounmap;
9872 }
9873
9874 err = register_netdev(dev);
9875 if (err) {
9876 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9877 goto err_out_iounmap;
9878 }
9879
9880 pci_set_drvdata(pdev, dev);
9881
9882 niu_device_announce(np);
9883
9884 return 0;
9885
9886err_out_iounmap:
9887 if (np->regs) {
9888 iounmap(np->regs);
9889 np->regs = NULL;
9890 }
9891
9892err_out_release_parent:
9893 niu_put_parent(np);
9894
9895err_out_free_dev:
9896 free_netdev(dev);
9897
9898err_out_free_res:
9899 pci_release_regions(pdev);
9900
9901err_out_disable_pdev:
9902 pci_disable_device(pdev);
9903 pci_set_drvdata(pdev, NULL);
9904
9905 return err;
9906}
9907
9908static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9909{
9910 struct net_device *dev = pci_get_drvdata(pdev);
9911
9912 if (dev) {
9913 struct niu *np = netdev_priv(dev);
9914
9915 unregister_netdev(dev);
9916 if (np->regs) {
9917 iounmap(np->regs);
9918 np->regs = NULL;
9919 }
9920
9921 niu_ldg_free(np);
9922
9923 niu_put_parent(np);
9924
9925 free_netdev(dev);
9926 pci_release_regions(pdev);
9927 pci_disable_device(pdev);
9928 pci_set_drvdata(pdev, NULL);
9929 }
9930}
9931
9932static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9933{
9934 struct net_device *dev = pci_get_drvdata(pdev);
9935 struct niu *np = netdev_priv(dev);
9936 unsigned long flags;
9937
9938 if (!netif_running(dev))
9939 return 0;
9940
9941 flush_work_sync(&np->reset_task);
9942 niu_netif_stop(np);
9943
9944 del_timer_sync(&np->timer);
9945
9946 spin_lock_irqsave(&np->lock, flags);
9947 niu_enable_interrupts(np, 0);
9948 spin_unlock_irqrestore(&np->lock, flags);
9949
9950 netif_device_detach(dev);
9951
9952 spin_lock_irqsave(&np->lock, flags);
9953 niu_stop_hw(np);
9954 spin_unlock_irqrestore(&np->lock, flags);
9955
9956 pci_save_state(pdev);
9957
9958 return 0;
9959}
9960
9961static int niu_resume(struct pci_dev *pdev)
9962{
9963 struct net_device *dev = pci_get_drvdata(pdev);
9964 struct niu *np = netdev_priv(dev);
9965 unsigned long flags;
9966 int err;
9967
9968 if (!netif_running(dev))
9969 return 0;
9970
9971 pci_restore_state(pdev);
9972
9973 netif_device_attach(dev);
9974
9975 spin_lock_irqsave(&np->lock, flags);
9976
9977 err = niu_init_hw(np);
9978 if (!err) {
9979 np->timer.expires = jiffies + HZ;
9980 add_timer(&np->timer);
9981 niu_netif_start(np);
9982 }
9983
9984 spin_unlock_irqrestore(&np->lock, flags);
9985
9986 return err;
9987}
9988
9989static struct pci_driver niu_pci_driver = {
9990 .name = DRV_MODULE_NAME,
9991 .id_table = niu_pci_tbl,
9992 .probe = niu_pci_init_one,
9993 .remove = __devexit_p(niu_pci_remove_one),
9994 .suspend = niu_suspend,
9995 .resume = niu_resume,
9996};
9997
9998#ifdef CONFIG_SPARC64
9999static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
10000 u64 *dma_addr, gfp_t flag)
10001{
10002 unsigned long order = get_order(size);
10003 unsigned long page = __get_free_pages(flag, order);
10004
10005 if (page == 0UL)
10006 return NULL;
10007 memset((char *)page, 0, PAGE_SIZE << order);
10008 *dma_addr = __pa(page);
10009
10010 return (void *) page;
10011}
10012
10013static void niu_phys_free_coherent(struct device *dev, size_t size,
10014 void *cpu_addr, u64 handle)
10015{
10016 unsigned long order = get_order(size);
10017
10018 free_pages((unsigned long) cpu_addr, order);
10019}
10020
10021static u64 niu_phys_map_page(struct device *dev, struct page *page,
10022 unsigned long offset, size_t size,
10023 enum dma_data_direction direction)
10024{
10025 return page_to_phys(page) + offset;
10026}
10027
10028static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10029 size_t size, enum dma_data_direction direction)
10030{
10031 /* Nothing to do. */
10032}
10033
10034static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10035 size_t size,
10036 enum dma_data_direction direction)
10037{
10038 return __pa(cpu_addr);
10039}
10040
10041static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10042 size_t size,
10043 enum dma_data_direction direction)
10044{
10045 /* Nothing to do. */
10046}
10047
10048static const struct niu_ops niu_phys_ops = {
10049 .alloc_coherent = niu_phys_alloc_coherent,
10050 .free_coherent = niu_phys_free_coherent,
10051 .map_page = niu_phys_map_page,
10052 .unmap_page = niu_phys_unmap_page,
10053 .map_single = niu_phys_map_single,
10054 .unmap_single = niu_phys_unmap_single,
10055};
10056
10057static int __devinit niu_of_probe(struct platform_device *op)
10058{
10059 union niu_parent_id parent_id;
10060 struct net_device *dev;
10061 struct niu *np;
10062 const u32 *reg;
10063 int err;
10064
10065 niu_driver_version();
10066
10067 reg = of_get_property(op->dev.of_node, "reg", NULL);
10068 if (!reg) {
10069 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10070 op->dev.of_node->full_name);
10071 return -ENODEV;
10072 }
10073
10074 dev = niu_alloc_and_init(&op->dev, NULL, op,
10075 &niu_phys_ops, reg[0] & 0x1);
10076 if (!dev) {
10077 err = -ENOMEM;
10078 goto err_out;
10079 }
10080 np = netdev_priv(dev);
10081
10082 memset(&parent_id, 0, sizeof(parent_id));
10083 parent_id.of = of_get_parent(op->dev.of_node);
10084
10085 np->parent = niu_get_parent(np, &parent_id,
10086 PLAT_TYPE_NIU);
10087 if (!np->parent) {
10088 err = -ENOMEM;
10089 goto err_out_free_dev;
10090 }
10091
10092 niu_set_basic_features(dev);
10093
10094 np->regs = of_ioremap(&op->resource[1], 0,
10095 resource_size(&op->resource[1]),
10096 "niu regs");
10097 if (!np->regs) {
10098 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10099 err = -ENOMEM;
10100 goto err_out_release_parent;
10101 }
10102
10103 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10104 resource_size(&op->resource[2]),
10105 "niu vregs-1");
10106 if (!np->vir_regs_1) {
10107 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10108 err = -ENOMEM;
10109 goto err_out_iounmap;
10110 }
10111
10112 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10113 resource_size(&op->resource[3]),
10114 "niu vregs-2");
10115 if (!np->vir_regs_2) {
10116 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10117 err = -ENOMEM;
10118 goto err_out_iounmap;
10119 }
10120
10121 niu_assign_netdev_ops(dev);
10122
10123 err = niu_get_invariants(np);
10124 if (err) {
10125 if (err != -ENODEV)
10126 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10127 goto err_out_iounmap;
10128 }
10129
10130 err = register_netdev(dev);
10131 if (err) {
10132 dev_err(&op->dev, "Cannot register net device, aborting\n");
10133 goto err_out_iounmap;
10134 }
10135
10136 dev_set_drvdata(&op->dev, dev);
10137
10138 niu_device_announce(np);
10139
10140 return 0;
10141
10142err_out_iounmap:
10143 if (np->vir_regs_1) {
10144 of_iounmap(&op->resource[2], np->vir_regs_1,
10145 resource_size(&op->resource[2]));
10146 np->vir_regs_1 = NULL;
10147 }
10148
10149 if (np->vir_regs_2) {
10150 of_iounmap(&op->resource[3], np->vir_regs_2,
10151 resource_size(&op->resource[3]));
10152 np->vir_regs_2 = NULL;
10153 }
10154
10155 if (np->regs) {
10156 of_iounmap(&op->resource[1], np->regs,
10157 resource_size(&op->resource[1]));
10158 np->regs = NULL;
10159 }
10160
10161err_out_release_parent:
10162 niu_put_parent(np);
10163
10164err_out_free_dev:
10165 free_netdev(dev);
10166
10167err_out:
10168 return err;
10169}
10170
10171static int __devexit niu_of_remove(struct platform_device *op)
10172{
10173 struct net_device *dev = dev_get_drvdata(&op->dev);
10174
10175 if (dev) {
10176 struct niu *np = netdev_priv(dev);
10177
10178 unregister_netdev(dev);
10179
10180 if (np->vir_regs_1) {
10181 of_iounmap(&op->resource[2], np->vir_regs_1,
10182 resource_size(&op->resource[2]));
10183 np->vir_regs_1 = NULL;
10184 }
10185
10186 if (np->vir_regs_2) {
10187 of_iounmap(&op->resource[3], np->vir_regs_2,
10188 resource_size(&op->resource[3]));
10189 np->vir_regs_2 = NULL;
10190 }
10191
10192 if (np->regs) {
10193 of_iounmap(&op->resource[1], np->regs,
10194 resource_size(&op->resource[1]));
10195 np->regs = NULL;
10196 }
10197
10198 niu_ldg_free(np);
10199
10200 niu_put_parent(np);
10201
10202 free_netdev(dev);
10203 dev_set_drvdata(&op->dev, NULL);
10204 }
10205 return 0;
10206}
10207
10208static const struct of_device_id niu_match[] = {
10209 {
10210 .name = "network",
10211 .compatible = "SUNW,niusl",
10212 },
10213 {},
10214};
10215MODULE_DEVICE_TABLE(of, niu_match);
10216
10217static struct platform_driver niu_of_driver = {
10218 .driver = {
10219 .name = "niu",
10220 .owner = THIS_MODULE,
10221 .of_match_table = niu_match,
10222 },
10223 .probe = niu_of_probe,
10224 .remove = __devexit_p(niu_of_remove),
10225};
10226
10227#endif /* CONFIG_SPARC64 */
10228
10229static int __init niu_init(void)
10230{
10231 int err = 0;
10232
10233 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10234
10235 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10236
10237#ifdef CONFIG_SPARC64
10238 err = platform_driver_register(&niu_of_driver);
10239#endif
10240
10241 if (!err) {
10242 err = pci_register_driver(&niu_pci_driver);
10243#ifdef CONFIG_SPARC64
10244 if (err)
10245 platform_driver_unregister(&niu_of_driver);
10246#endif
10247 }
10248
10249 return err;
10250}
10251
10252static void __exit niu_exit(void)
10253{
10254 pci_unregister_driver(&niu_pci_driver);
10255#ifdef CONFIG_SPARC64
10256 platform_driver_unregister(&niu_of_driver);
10257#endif
10258}
10259
10260module_init(niu_init);
10261module_exit(niu_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-06 16:08:15 -0500