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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / sun / niu.c
blob9a5004f674c75303365feb25c90a4ee207f53696
1 // SPDX-License-Identifier: GPL-2.0
2 /* niu.c: Neptune ethernet driver.
3 *
4 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
5 */
6
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/interrupt.h>
12 #include <linux/pci.h>
13 #include <linux/dma-mapping.h>
14 #include <linux/netdevice.h>
15 #include <linux/ethtool.h>
16 #include <linux/etherdevice.h>
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19 #include <linux/bitops.h>
20 #include <linux/mii.h>
21 #include <linux/if.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/ip.h>
25 #include <linux/in.h>
26 #include <linux/ipv6.h>
27 #include <linux/log2.h>
28 #include <linux/jiffies.h>
29 #include <linux/crc32.h>
30 #include <linux/list.h>
31 #include <linux/slab.h>
32
33 #include <linux/io.h>
34 #include <linux/of_device.h>
35
36 #include "niu.h"
37
38 #define DRV_MODULE_NAME "niu"
39 #define DRV_MODULE_VERSION "1.1"
40 #define DRV_MODULE_RELDATE "Apr 22, 2010"
41
42 static char version[] =
43 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
44
45 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
46 MODULE_DESCRIPTION("NIU ethernet driver");
47 MODULE_LICENSE("GPL");
48 MODULE_VERSION(DRV_MODULE_VERSION);
49
50 #ifndef readq
51 static u64 readq(void __iomem *reg)
52 {
53 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
54 }
55
56 static void writeq(u64 val, void __iomem *reg)
57 {
58 writel(val & 0xffffffff, reg);
59 writel(val >> 32, reg + 0x4UL);
60 }
61 #endif
62
63 static const struct pci_device_id niu_pci_tbl[] = {
64 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
65 {}
66 };
67
68 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
69
70 #define NIU_TX_TIMEOUT (5 * HZ)
71
72 #define nr64(reg) readq(np->regs + (reg))
73 #define nw64(reg, val) writeq((val), np->regs + (reg))
74
75 #define nr64_mac(reg) readq(np->mac_regs + (reg))
76 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
77
78 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
79 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
80
81 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
82 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
83
84 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
85 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
86
87 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
88
89 static int niu_debug;
90 static int debug = -1;
91 module_param(debug, int, 0);
92 MODULE_PARM_DESC(debug, "NIU debug level");
93
94 #define niu_lock_parent(np, flags) \
95 spin_lock_irqsave(&np->parent->lock, flags)
96 #define niu_unlock_parent(np, flags) \
97 spin_unlock_irqrestore(&np->parent->lock, flags)
98
99 static int serdes_init_10g_serdes(struct niu *np);
100
101 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
102 u64 bits, int limit, int delay)
103 {
104 while (--limit >= 0) {
105 u64 val = nr64_mac(reg);
106
107 if (!(val & bits))
108 break;
109 udelay(delay);
110 }
111 if (limit < 0)
112 return -ENODEV;
113 return 0;
114 }
115
116 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
117 u64 bits, int limit, int delay,
118 const char *reg_name)
119 {
120 int err;
121
122 nw64_mac(reg, bits);
123 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
124 if (err)
125 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
126 (unsigned long long)bits, reg_name,
127 (unsigned long long)nr64_mac(reg));
128 return err;
129 }
130
131 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
132 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
133 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
134 })
135
136 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
137 u64 bits, int limit, int delay)
138 {
139 while (--limit >= 0) {
140 u64 val = nr64_ipp(reg);
141
142 if (!(val & bits))
143 break;
144 udelay(delay);
145 }
146 if (limit < 0)
147 return -ENODEV;
148 return 0;
149 }
150
151 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
152 u64 bits, int limit, int delay,
153 const char *reg_name)
154 {
155 int err;
156 u64 val;
157
158 val = nr64_ipp(reg);
159 val |= bits;
160 nw64_ipp(reg, val);
161
162 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
163 if (err)
164 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
165 (unsigned long long)bits, reg_name,
166 (unsigned long long)nr64_ipp(reg));
167 return err;
168 }
169
170 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
171 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
172 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
173 })
174
175 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
176 u64 bits, int limit, int delay)
177 {
178 while (--limit >= 0) {
179 u64 val = nr64(reg);
180
181 if (!(val & bits))
182 break;
183 udelay(delay);
184 }
185 if (limit < 0)
186 return -ENODEV;
187 return 0;
188 }
189
190 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
191 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
192 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
193 })
194
195 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
196 u64 bits, int limit, int delay,
197 const char *reg_name)
198 {
199 int err;
200
201 nw64(reg, bits);
202 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
203 if (err)
204 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
205 (unsigned long long)bits, reg_name,
206 (unsigned long long)nr64(reg));
207 return err;
208 }
209
210 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
211 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
212 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
213 })
214
215 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
216 {
217 u64 val = (u64) lp->timer;
218
219 if (on)
220 val |= LDG_IMGMT_ARM;
221
222 nw64(LDG_IMGMT(lp->ldg_num), val);
223 }
224
225 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
226 {
227 unsigned long mask_reg, bits;
228 u64 val;
229
230 if (ldn < 0 || ldn > LDN_MAX)
231 return -EINVAL;
232
233 if (ldn < 64) {
234 mask_reg = LD_IM0(ldn);
235 bits = LD_IM0_MASK;
236 } else {
237 mask_reg = LD_IM1(ldn - 64);
238 bits = LD_IM1_MASK;
239 }
240
241 val = nr64(mask_reg);
242 if (on)
243 val &= ~bits;
244 else
245 val |= bits;
246 nw64(mask_reg, val);
247
248 return 0;
249 }
250
251 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
252 {
253 struct niu_parent *parent = np->parent;
254 int i;
255
256 for (i = 0; i <= LDN_MAX; i++) {
257 int err;
258
259 if (parent->ldg_map[i] != lp->ldg_num)
260 continue;
261
262 err = niu_ldn_irq_enable(np, i, on);
263 if (err)
264 return err;
265 }
266 return 0;
267 }
268
269 static int niu_enable_interrupts(struct niu *np, int on)
270 {
271 int i;
272
273 for (i = 0; i < np->num_ldg; i++) {
274 struct niu_ldg *lp = &np->ldg[i];
275 int err;
276
277 err = niu_enable_ldn_in_ldg(np, lp, on);
278 if (err)
279 return err;
280 }
281 for (i = 0; i < np->num_ldg; i++)
282 niu_ldg_rearm(np, &np->ldg[i], on);
283
284 return 0;
285 }
286
287 static u32 phy_encode(u32 type, int port)
288 {
289 return type << (port * 2);
290 }
291
292 static u32 phy_decode(u32 val, int port)
293 {
294 return (val >> (port * 2)) & PORT_TYPE_MASK;
295 }
296
297 static int mdio_wait(struct niu *np)
298 {
299 int limit = 1000;
300 u64 val;
301
302 while (--limit > 0) {
303 val = nr64(MIF_FRAME_OUTPUT);
304 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
305 return val & MIF_FRAME_OUTPUT_DATA;
306
307 udelay(10);
308 }
309
310 return -ENODEV;
311 }
312
313 static int mdio_read(struct niu *np, int port, int dev, int reg)
314 {
315 int err;
316
317 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
318 err = mdio_wait(np);
319 if (err < 0)
320 return err;
321
322 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
323 return mdio_wait(np);
324 }
325
326 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
327 {
328 int err;
329
330 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
331 err = mdio_wait(np);
332 if (err < 0)
333 return err;
334
335 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
336 err = mdio_wait(np);
337 if (err < 0)
338 return err;
339
340 return 0;
341 }
342
343 static int mii_read(struct niu *np, int port, int reg)
344 {
345 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
346 return mdio_wait(np);
347 }
348
349 static int mii_write(struct niu *np, int port, int reg, int data)
350 {
351 int err;
352
353 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
354 err = mdio_wait(np);
355 if (err < 0)
356 return err;
357
358 return 0;
359 }
360
361 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
362 {
363 int err;
364
365 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
366 ESR2_TI_PLL_TX_CFG_L(channel),
367 val & 0xffff);
368 if (!err)
369 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
370 ESR2_TI_PLL_TX_CFG_H(channel),
371 val >> 16);
372 return err;
373 }
374
375 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
376 {
377 int err;
378
379 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
380 ESR2_TI_PLL_RX_CFG_L(channel),
381 val & 0xffff);
382 if (!err)
383 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
384 ESR2_TI_PLL_RX_CFG_H(channel),
385 val >> 16);
386 return err;
387 }
388
389 /* Mode is always 10G fiber. */
390 static int serdes_init_niu_10g_fiber(struct niu *np)
391 {
392 struct niu_link_config *lp = &np->link_config;
393 u32 tx_cfg, rx_cfg;
394 unsigned long i;
395
396 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
397 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
398 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
399 PLL_RX_CFG_EQ_LP_ADAPTIVE);
400
401 if (lp->loopback_mode == LOOPBACK_PHY) {
402 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
403
404 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
405 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
406
407 tx_cfg |= PLL_TX_CFG_ENTEST;
408 rx_cfg |= PLL_RX_CFG_ENTEST;
409 }
410
411 /* Initialize all 4 lanes of the SERDES. */
412 for (i = 0; i < 4; i++) {
413 int err = esr2_set_tx_cfg(np, i, tx_cfg);
414 if (err)
415 return err;
416 }
417
418 for (i = 0; i < 4; i++) {
419 int err = esr2_set_rx_cfg(np, i, rx_cfg);
420 if (err)
421 return err;
422 }
423
424 return 0;
425 }
426
427 static int serdes_init_niu_1g_serdes(struct niu *np)
428 {
429 struct niu_link_config *lp = &np->link_config;
430 u16 pll_cfg, pll_sts;
431 int max_retry = 100;
432 u64 uninitialized_var(sig), mask, val;
433 u32 tx_cfg, rx_cfg;
434 unsigned long i;
435 int err;
436
437 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
438 PLL_TX_CFG_RATE_HALF);
439 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
440 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
441 PLL_RX_CFG_RATE_HALF);
442
443 if (np->port == 0)
444 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
445
446 if (lp->loopback_mode == LOOPBACK_PHY) {
447 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
448
449 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
450 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
451
452 tx_cfg |= PLL_TX_CFG_ENTEST;
453 rx_cfg |= PLL_RX_CFG_ENTEST;
454 }
455
456 /* Initialize PLL for 1G */
457 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
458
459 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
460 ESR2_TI_PLL_CFG_L, pll_cfg);
461 if (err) {
462 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
463 np->port, __func__);
464 return err;
465 }
466
467 pll_sts = PLL_CFG_ENPLL;
468
469 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
470 ESR2_TI_PLL_STS_L, pll_sts);
471 if (err) {
472 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
473 np->port, __func__);
474 return err;
475 }
476
477 udelay(200);
478
479 /* Initialize all 4 lanes of the SERDES. */
480 for (i = 0; i < 4; i++) {
481 err = esr2_set_tx_cfg(np, i, tx_cfg);
482 if (err)
483 return err;
484 }
485
486 for (i = 0; i < 4; i++) {
487 err = esr2_set_rx_cfg(np, i, rx_cfg);
488 if (err)
489 return err;
490 }
491
492 switch (np->port) {
493 case 0:
494 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
495 mask = val;
496 break;
497
498 case 1:
499 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
500 mask = val;
501 break;
502
503 default:
504 return -EINVAL;
505 }
506
507 while (max_retry--) {
508 sig = nr64(ESR_INT_SIGNALS);
509 if ((sig & mask) == val)
510 break;
511
512 mdelay(500);
513 }
514
515 if ((sig & mask) != val) {
516 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
517 np->port, (int)(sig & mask), (int)val);
518 return -ENODEV;
519 }
520
521 return 0;
522 }
523
524 static int serdes_init_niu_10g_serdes(struct niu *np)
525 {
526 struct niu_link_config *lp = &np->link_config;
527 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
528 int max_retry = 100;
529 u64 uninitialized_var(sig), mask, val;
530 unsigned long i;
531 int err;
532
533 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
534 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
535 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
536 PLL_RX_CFG_EQ_LP_ADAPTIVE);
537
538 if (lp->loopback_mode == LOOPBACK_PHY) {
539 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
540
541 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
542 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
543
544 tx_cfg |= PLL_TX_CFG_ENTEST;
545 rx_cfg |= PLL_RX_CFG_ENTEST;
546 }
547
548 /* Initialize PLL for 10G */
549 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
550
551 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
552 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
553 if (err) {
554 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
555 np->port, __func__);
556 return err;
557 }
558
559 pll_sts = PLL_CFG_ENPLL;
560
561 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
562 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
563 if (err) {
564 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
565 np->port, __func__);
566 return err;
567 }
568
569 udelay(200);
570
571 /* Initialize all 4 lanes of the SERDES. */
572 for (i = 0; i < 4; i++) {
573 err = esr2_set_tx_cfg(np, i, tx_cfg);
574 if (err)
575 return err;
576 }
577
578 for (i = 0; i < 4; i++) {
579 err = esr2_set_rx_cfg(np, i, rx_cfg);
580 if (err)
581 return err;
582 }
583
584 /* check if serdes is ready */
585
586 switch (np->port) {
587 case 0:
588 mask = ESR_INT_SIGNALS_P0_BITS;
589 val = (ESR_INT_SRDY0_P0 |
590 ESR_INT_DET0_P0 |
591 ESR_INT_XSRDY_P0 |
592 ESR_INT_XDP_P0_CH3 |
593 ESR_INT_XDP_P0_CH2 |
594 ESR_INT_XDP_P0_CH1 |
595 ESR_INT_XDP_P0_CH0);
596 break;
597
598 case 1:
599 mask = ESR_INT_SIGNALS_P1_BITS;
600 val = (ESR_INT_SRDY0_P1 |
601 ESR_INT_DET0_P1 |
602 ESR_INT_XSRDY_P1 |
603 ESR_INT_XDP_P1_CH3 |
604 ESR_INT_XDP_P1_CH2 |
605 ESR_INT_XDP_P1_CH1 |
606 ESR_INT_XDP_P1_CH0);
607 break;
608
609 default:
610 return -EINVAL;
611 }
612
613 while (max_retry--) {
614 sig = nr64(ESR_INT_SIGNALS);
615 if ((sig & mask) == val)
616 break;
617
618 mdelay(500);
619 }
620
621 if ((sig & mask) != val) {
622 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
623 np->port, (int)(sig & mask), (int)val);
624
625 /* 10G failed, try initializing at 1G */
626 err = serdes_init_niu_1g_serdes(np);
627 if (!err) {
628 np->flags &= ~NIU_FLAGS_10G;
629 np->mac_xcvr = MAC_XCVR_PCS;
630 } else {
631 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
632 np->port);
633 return -ENODEV;
634 }
635 }
636 return 0;
637 }
638
639 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
640 {
641 int err;
642
643 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
644 if (err >= 0) {
645 *val = (err & 0xffff);
646 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
647 ESR_RXTX_CTRL_H(chan));
648 if (err >= 0)
649 *val |= ((err & 0xffff) << 16);
650 err = 0;
651 }
652 return err;
653 }
654
655 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
656 {
657 int err;
658
659 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
660 ESR_GLUE_CTRL0_L(chan));
661 if (err >= 0) {
662 *val = (err & 0xffff);
663 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
664 ESR_GLUE_CTRL0_H(chan));
665 if (err >= 0) {
666 *val |= ((err & 0xffff) << 16);
667 err = 0;
668 }
669 }
670 return err;
671 }
672
673 static int esr_read_reset(struct niu *np, u32 *val)
674 {
675 int err;
676
677 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
678 ESR_RXTX_RESET_CTRL_L);
679 if (err >= 0) {
680 *val = (err & 0xffff);
681 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
682 ESR_RXTX_RESET_CTRL_H);
683 if (err >= 0) {
684 *val |= ((err & 0xffff) << 16);
685 err = 0;
686 }
687 }
688 return err;
689 }
690
691 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
692 {
693 int err;
694
695 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
696 ESR_RXTX_CTRL_L(chan), val & 0xffff);
697 if (!err)
698 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
699 ESR_RXTX_CTRL_H(chan), (val >> 16));
700 return err;
701 }
702
703 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
704 {
705 int err;
706
707 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
708 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
709 if (!err)
710 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
711 ESR_GLUE_CTRL0_H(chan), (val >> 16));
712 return err;
713 }
714
715 static int esr_reset(struct niu *np)
716 {
717 u32 uninitialized_var(reset);
718 int err;
719
720 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
721 ESR_RXTX_RESET_CTRL_L, 0x0000);
722 if (err)
723 return err;
724 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
725 ESR_RXTX_RESET_CTRL_H, 0xffff);
726 if (err)
727 return err;
728 udelay(200);
729
730 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
731 ESR_RXTX_RESET_CTRL_L, 0xffff);
732 if (err)
733 return err;
734 udelay(200);
735
736 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
737 ESR_RXTX_RESET_CTRL_H, 0x0000);
738 if (err)
739 return err;
740 udelay(200);
741
742 err = esr_read_reset(np, &reset);
743 if (err)
744 return err;
745 if (reset != 0) {
746 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
747 np->port, reset);
748 return -ENODEV;
749 }
750
751 return 0;
752 }
753
754 static int serdes_init_10g(struct niu *np)
755 {
756 struct niu_link_config *lp = &np->link_config;
757 unsigned long ctrl_reg, test_cfg_reg, i;
758 u64 ctrl_val, test_cfg_val, sig, mask, val;
759 int err;
760
761 switch (np->port) {
762 case 0:
763 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
764 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
765 break;
766 case 1:
767 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
768 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
769 break;
770
771 default:
772 return -EINVAL;
773 }
774 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
775 ENET_SERDES_CTRL_SDET_1 |
776 ENET_SERDES_CTRL_SDET_2 |
777 ENET_SERDES_CTRL_SDET_3 |
778 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
779 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
780 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
781 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
782 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
783 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
784 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
785 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
786 test_cfg_val = 0;
787
788 if (lp->loopback_mode == LOOPBACK_PHY) {
789 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
790 ENET_SERDES_TEST_MD_0_SHIFT) |
791 (ENET_TEST_MD_PAD_LOOPBACK <<
792 ENET_SERDES_TEST_MD_1_SHIFT) |
793 (ENET_TEST_MD_PAD_LOOPBACK <<
794 ENET_SERDES_TEST_MD_2_SHIFT) |
795 (ENET_TEST_MD_PAD_LOOPBACK <<
796 ENET_SERDES_TEST_MD_3_SHIFT));
797 }
798
799 nw64(ctrl_reg, ctrl_val);
800 nw64(test_cfg_reg, test_cfg_val);
801
802 /* Initialize all 4 lanes of the SERDES. */
803 for (i = 0; i < 4; i++) {
804 u32 rxtx_ctrl, glue0;
805
806 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
807 if (err)
808 return err;
809 err = esr_read_glue0(np, i, &glue0);
810 if (err)
811 return err;
812
813 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
814 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
815 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
816
817 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
818 ESR_GLUE_CTRL0_THCNT |
819 ESR_GLUE_CTRL0_BLTIME);
820 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
821 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
822 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
823 (BLTIME_300_CYCLES <<
824 ESR_GLUE_CTRL0_BLTIME_SHIFT));
825
826 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
827 if (err)
828 return err;
829 err = esr_write_glue0(np, i, glue0);
830 if (err)
831 return err;
832 }
833
834 err = esr_reset(np);
835 if (err)
836 return err;
837
838 sig = nr64(ESR_INT_SIGNALS);
839 switch (np->port) {
840 case 0:
841 mask = ESR_INT_SIGNALS_P0_BITS;
842 val = (ESR_INT_SRDY0_P0 |
843 ESR_INT_DET0_P0 |
844 ESR_INT_XSRDY_P0 |
845 ESR_INT_XDP_P0_CH3 |
846 ESR_INT_XDP_P0_CH2 |
847 ESR_INT_XDP_P0_CH1 |
848 ESR_INT_XDP_P0_CH0);
849 break;
850
851 case 1:
852 mask = ESR_INT_SIGNALS_P1_BITS;
853 val = (ESR_INT_SRDY0_P1 |
854 ESR_INT_DET0_P1 |
855 ESR_INT_XSRDY_P1 |
856 ESR_INT_XDP_P1_CH3 |
857 ESR_INT_XDP_P1_CH2 |
858 ESR_INT_XDP_P1_CH1 |
859 ESR_INT_XDP_P1_CH0);
860 break;
861
862 default:
863 return -EINVAL;
864 }
865
866 if ((sig & mask) != val) {
867 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
868 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
869 return 0;
870 }
871 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
872 np->port, (int)(sig & mask), (int)val);
873 return -ENODEV;
874 }
875 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
876 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
877 return 0;
878 }
879
880 static int serdes_init_1g(struct niu *np)
881 {
882 u64 val;
883
884 val = nr64(ENET_SERDES_1_PLL_CFG);
885 val &= ~ENET_SERDES_PLL_FBDIV2;
886 switch (np->port) {
887 case 0:
888 val |= ENET_SERDES_PLL_HRATE0;
889 break;
890 case 1:
891 val |= ENET_SERDES_PLL_HRATE1;
892 break;
893 case 2:
894 val |= ENET_SERDES_PLL_HRATE2;
895 break;
896 case 3:
897 val |= ENET_SERDES_PLL_HRATE3;
898 break;
899 default:
900 return -EINVAL;
901 }
902 nw64(ENET_SERDES_1_PLL_CFG, val);
903
904 return 0;
905 }
906
907 static int serdes_init_1g_serdes(struct niu *np)
908 {
909 struct niu_link_config *lp = &np->link_config;
910 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
911 u64 ctrl_val, test_cfg_val, sig, mask, val;
912 int err;
913 u64 reset_val, val_rd;
914
915 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
916 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
917 ENET_SERDES_PLL_FBDIV0;
918 switch (np->port) {
919 case 0:
920 reset_val = ENET_SERDES_RESET_0;
921 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
922 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
923 pll_cfg = ENET_SERDES_0_PLL_CFG;
924 break;
925 case 1:
926 reset_val = ENET_SERDES_RESET_1;
927 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
928 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
929 pll_cfg = ENET_SERDES_1_PLL_CFG;
930 break;
931
932 default:
933 return -EINVAL;
934 }
935 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
936 ENET_SERDES_CTRL_SDET_1 |
937 ENET_SERDES_CTRL_SDET_2 |
938 ENET_SERDES_CTRL_SDET_3 |
939 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
940 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
941 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
942 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
943 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
944 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
945 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
946 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
947 test_cfg_val = 0;
948
949 if (lp->loopback_mode == LOOPBACK_PHY) {
950 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
951 ENET_SERDES_TEST_MD_0_SHIFT) |
952 (ENET_TEST_MD_PAD_LOOPBACK <<
953 ENET_SERDES_TEST_MD_1_SHIFT) |
954 (ENET_TEST_MD_PAD_LOOPBACK <<
955 ENET_SERDES_TEST_MD_2_SHIFT) |
956 (ENET_TEST_MD_PAD_LOOPBACK <<
957 ENET_SERDES_TEST_MD_3_SHIFT));
958 }
959
960 nw64(ENET_SERDES_RESET, reset_val);
961 mdelay(20);
962 val_rd = nr64(ENET_SERDES_RESET);
963 val_rd &= ~reset_val;
964 nw64(pll_cfg, val);
965 nw64(ctrl_reg, ctrl_val);
966 nw64(test_cfg_reg, test_cfg_val);
967 nw64(ENET_SERDES_RESET, val_rd);
968 mdelay(2000);
969
970 /* Initialize all 4 lanes of the SERDES. */
971 for (i = 0; i < 4; i++) {
972 u32 rxtx_ctrl, glue0;
973
974 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
975 if (err)
976 return err;
977 err = esr_read_glue0(np, i, &glue0);
978 if (err)
979 return err;
980
981 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
982 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
983 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
984
985 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
986 ESR_GLUE_CTRL0_THCNT |
987 ESR_GLUE_CTRL0_BLTIME);
988 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
989 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
990 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
991 (BLTIME_300_CYCLES <<
992 ESR_GLUE_CTRL0_BLTIME_SHIFT));
993
994 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
995 if (err)
996 return err;
997 err = esr_write_glue0(np, i, glue0);
998 if (err)
999 return err;
1000 }
1001
1002
1003 sig = nr64(ESR_INT_SIGNALS);
1004 switch (np->port) {
1005 case 0:
1006 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1007 mask = val;
1008 break;
1009
1010 case 1:
1011 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1012 mask = val;
1013 break;
1014
1015 default:
1016 return -EINVAL;
1017 }
1018
1019 if ((sig & mask) != val) {
1020 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1021 np->port, (int)(sig & mask), (int)val);
1022 return -ENODEV;
1023 }
1024
1025 return 0;
1026 }
1027
1028 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1029 {
1030 struct niu_link_config *lp = &np->link_config;
1031 int link_up;
1032 u64 val;
1033 u16 current_speed;
1034 unsigned long flags;
1035 u8 current_duplex;
1036
1037 link_up = 0;
1038 current_speed = SPEED_INVALID;
1039 current_duplex = DUPLEX_INVALID;
1040
1041 spin_lock_irqsave(&np->lock, flags);
1042
1043 val = nr64_pcs(PCS_MII_STAT);
1044
1045 if (val & PCS_MII_STAT_LINK_STATUS) {
1046 link_up = 1;
1047 current_speed = SPEED_1000;
1048 current_duplex = DUPLEX_FULL;
1049 }
1050
1051 lp->active_speed = current_speed;
1052 lp->active_duplex = current_duplex;
1053 spin_unlock_irqrestore(&np->lock, flags);
1054
1055 *link_up_p = link_up;
1056 return 0;
1057 }
1058
1059 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1060 {
1061 unsigned long flags;
1062 struct niu_link_config *lp = &np->link_config;
1063 int link_up = 0;
1064 int link_ok = 1;
1065 u64 val, val2;
1066 u16 current_speed;
1067 u8 current_duplex;
1068
1069 if (!(np->flags & NIU_FLAGS_10G))
1070 return link_status_1g_serdes(np, link_up_p);
1071
1072 current_speed = SPEED_INVALID;
1073 current_duplex = DUPLEX_INVALID;
1074 spin_lock_irqsave(&np->lock, flags);
1075
1076 val = nr64_xpcs(XPCS_STATUS(0));
1077 val2 = nr64_mac(XMAC_INTER2);
1078 if (val2 & 0x01000000)
1079 link_ok = 0;
1080
1081 if ((val & 0x1000ULL) && link_ok) {
1082 link_up = 1;
1083 current_speed = SPEED_10000;
1084 current_duplex = DUPLEX_FULL;
1085 }
1086 lp->active_speed = current_speed;
1087 lp->active_duplex = current_duplex;
1088 spin_unlock_irqrestore(&np->lock, flags);
1089 *link_up_p = link_up;
1090 return 0;
1091 }
1092
1093 static int link_status_mii(struct niu *np, int *link_up_p)
1094 {
1095 struct niu_link_config *lp = &np->link_config;
1096 int err;
1097 int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1098 int supported, advertising, active_speed, active_duplex;
1099
1100 err = mii_read(np, np->phy_addr, MII_BMCR);
1101 if (unlikely(err < 0))
1102 return err;
1103 bmcr = err;
1104
1105 err = mii_read(np, np->phy_addr, MII_BMSR);
1106 if (unlikely(err < 0))
1107 return err;
1108 bmsr = err;
1109
1110 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1111 if (unlikely(err < 0))
1112 return err;
1113 advert = err;
1114
1115 err = mii_read(np, np->phy_addr, MII_LPA);
1116 if (unlikely(err < 0))
1117 return err;
1118 lpa = err;
1119
1120 if (likely(bmsr & BMSR_ESTATEN)) {
1121 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1122 if (unlikely(err < 0))
1123 return err;
1124 estatus = err;
1125
1126 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1127 if (unlikely(err < 0))
1128 return err;
1129 ctrl1000 = err;
1130
1131 err = mii_read(np, np->phy_addr, MII_STAT1000);
1132 if (unlikely(err < 0))
1133 return err;
1134 stat1000 = err;
1135 } else
1136 estatus = ctrl1000 = stat1000 = 0;
1137
1138 supported = 0;
1139 if (bmsr & BMSR_ANEGCAPABLE)
1140 supported |= SUPPORTED_Autoneg;
1141 if (bmsr & BMSR_10HALF)
1142 supported |= SUPPORTED_10baseT_Half;
1143 if (bmsr & BMSR_10FULL)
1144 supported |= SUPPORTED_10baseT_Full;
1145 if (bmsr & BMSR_100HALF)
1146 supported |= SUPPORTED_100baseT_Half;
1147 if (bmsr & BMSR_100FULL)
1148 supported |= SUPPORTED_100baseT_Full;
1149 if (estatus & ESTATUS_1000_THALF)
1150 supported |= SUPPORTED_1000baseT_Half;
1151 if (estatus & ESTATUS_1000_TFULL)
1152 supported |= SUPPORTED_1000baseT_Full;
1153 lp->supported = supported;
1154
1155 advertising = mii_adv_to_ethtool_adv_t(advert);
1156 advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1157
1158 if (bmcr & BMCR_ANENABLE) {
1159 int neg, neg1000;
1160
1161 lp->active_autoneg = 1;
1162 advertising |= ADVERTISED_Autoneg;
1163
1164 neg = advert & lpa;
1165 neg1000 = (ctrl1000 << 2) & stat1000;
1166
1167 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1168 active_speed = SPEED_1000;
1169 else if (neg & LPA_100)
1170 active_speed = SPEED_100;
1171 else if (neg & (LPA_10HALF | LPA_10FULL))
1172 active_speed = SPEED_10;
1173 else
1174 active_speed = SPEED_INVALID;
1175
1176 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1177 active_duplex = DUPLEX_FULL;
1178 else if (active_speed != SPEED_INVALID)
1179 active_duplex = DUPLEX_HALF;
1180 else
1181 active_duplex = DUPLEX_INVALID;
1182 } else {
1183 lp->active_autoneg = 0;
1184
1185 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1186 active_speed = SPEED_1000;
1187 else if (bmcr & BMCR_SPEED100)
1188 active_speed = SPEED_100;
1189 else
1190 active_speed = SPEED_10;
1191
1192 if (bmcr & BMCR_FULLDPLX)
1193 active_duplex = DUPLEX_FULL;
1194 else
1195 active_duplex = DUPLEX_HALF;
1196 }
1197
1198 lp->active_advertising = advertising;
1199 lp->active_speed = active_speed;
1200 lp->active_duplex = active_duplex;
1201 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1202
1203 return 0;
1204 }
1205
1206 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1207 {
1208 struct niu_link_config *lp = &np->link_config;
1209 u16 current_speed, bmsr;
1210 unsigned long flags;
1211 u8 current_duplex;
1212 int err, link_up;
1213
1214 link_up = 0;
1215 current_speed = SPEED_INVALID;
1216 current_duplex = DUPLEX_INVALID;
1217
1218 spin_lock_irqsave(&np->lock, flags);
1219
1220 err = mii_read(np, np->phy_addr, MII_BMSR);
1221 if (err < 0)
1222 goto out;
1223
1224 bmsr = err;
1225 if (bmsr & BMSR_LSTATUS) {
1226 link_up = 1;
1227 current_speed = SPEED_1000;
1228 current_duplex = DUPLEX_FULL;
1229 }
1230 lp->active_speed = current_speed;
1231 lp->active_duplex = current_duplex;
1232 err = 0;
1233
1234 out:
1235 spin_unlock_irqrestore(&np->lock, flags);
1236
1237 *link_up_p = link_up;
1238 return err;
1239 }
1240
1241 static int link_status_1g(struct niu *np, int *link_up_p)
1242 {
1243 struct niu_link_config *lp = &np->link_config;
1244 unsigned long flags;
1245 int err;
1246
1247 spin_lock_irqsave(&np->lock, flags);
1248
1249 err = link_status_mii(np, link_up_p);
1250 lp->supported |= SUPPORTED_TP;
1251 lp->active_advertising |= ADVERTISED_TP;
1252
1253 spin_unlock_irqrestore(&np->lock, flags);
1254 return err;
1255 }
1256
1257 static int bcm8704_reset(struct niu *np)
1258 {
1259 int err, limit;
1260
1261 err = mdio_read(np, np->phy_addr,
1262 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1263 if (err < 0 || err == 0xffff)
1264 return err;
1265 err |= BMCR_RESET;
1266 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1267 MII_BMCR, err);
1268 if (err)
1269 return err;
1270
1271 limit = 1000;
1272 while (--limit >= 0) {
1273 err = mdio_read(np, np->phy_addr,
1274 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1275 if (err < 0)
1276 return err;
1277 if (!(err & BMCR_RESET))
1278 break;
1279 }
1280 if (limit < 0) {
1281 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1282 np->port, (err & 0xffff));
1283 return -ENODEV;
1284 }
1285 return 0;
1286 }
1287
1288 /* When written, certain PHY registers need to be read back twice
1289 * in order for the bits to settle properly.
1290 */
1291 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1292 {
1293 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1294 if (err < 0)
1295 return err;
1296 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1297 if (err < 0)
1298 return err;
1299 return 0;
1300 }
1301
1302 static int bcm8706_init_user_dev3(struct niu *np)
1303 {
1304 int err;
1305
1306
1307 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1308 BCM8704_USER_OPT_DIGITAL_CTRL);
1309 if (err < 0)
1310 return err;
1311 err &= ~USER_ODIG_CTRL_GPIOS;
1312 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1313 err |= USER_ODIG_CTRL_RESV2;
1314 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1315 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1316 if (err)
1317 return err;
1318
1319 mdelay(1000);
1320
1321 return 0;
1322 }
1323
1324 static int bcm8704_init_user_dev3(struct niu *np)
1325 {
1326 int err;
1327
1328 err = mdio_write(np, np->phy_addr,
1329 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1330 (USER_CONTROL_OPTXRST_LVL |
1331 USER_CONTROL_OPBIASFLT_LVL |
1332 USER_CONTROL_OBTMPFLT_LVL |
1333 USER_CONTROL_OPPRFLT_LVL |
1334 USER_CONTROL_OPTXFLT_LVL |
1335 USER_CONTROL_OPRXLOS_LVL |
1336 USER_CONTROL_OPRXFLT_LVL |
1337 USER_CONTROL_OPTXON_LVL |
1338 (0x3f << USER_CONTROL_RES1_SHIFT)));
1339 if (err)
1340 return err;
1341
1342 err = mdio_write(np, np->phy_addr,
1343 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1344 (USER_PMD_TX_CTL_XFP_CLKEN |
1345 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1346 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1347 USER_PMD_TX_CTL_TSCK_LPWREN));
1348 if (err)
1349 return err;
1350
1351 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1352 if (err)
1353 return err;
1354 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1355 if (err)
1356 return err;
1357
1358 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1359 BCM8704_USER_OPT_DIGITAL_CTRL);
1360 if (err < 0)
1361 return err;
1362 err &= ~USER_ODIG_CTRL_GPIOS;
1363 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1364 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1365 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1366 if (err)
1367 return err;
1368
1369 mdelay(1000);
1370
1371 return 0;
1372 }
1373
1374 static int mrvl88x2011_act_led(struct niu *np, int val)
1375 {
1376 int err;
1377
1378 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1379 MRVL88X2011_LED_8_TO_11_CTL);
1380 if (err < 0)
1381 return err;
1382
1383 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1384 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1385
1386 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1387 MRVL88X2011_LED_8_TO_11_CTL, err);
1388 }
1389
1390 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1391 {
1392 int err;
1393
1394 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1395 MRVL88X2011_LED_BLINK_CTL);
1396 if (err >= 0) {
1397 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1398 err |= (rate << 4);
1399
1400 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1401 MRVL88X2011_LED_BLINK_CTL, err);
1402 }
1403
1404 return err;
1405 }
1406
1407 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1408 {
1409 int err;
1410
1411 /* Set LED functions */
1412 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1413 if (err)
1414 return err;
1415
1416 /* led activity */
1417 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1418 if (err)
1419 return err;
1420
1421 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1422 MRVL88X2011_GENERAL_CTL);
1423 if (err < 0)
1424 return err;
1425
1426 err |= MRVL88X2011_ENA_XFPREFCLK;
1427
1428 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1429 MRVL88X2011_GENERAL_CTL, err);
1430 if (err < 0)
1431 return err;
1432
1433 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1434 MRVL88X2011_PMA_PMD_CTL_1);
1435 if (err < 0)
1436 return err;
1437
1438 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1439 err |= MRVL88X2011_LOOPBACK;
1440 else
1441 err &= ~MRVL88X2011_LOOPBACK;
1442
1443 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1444 MRVL88X2011_PMA_PMD_CTL_1, err);
1445 if (err < 0)
1446 return err;
1447
1448 /* Enable PMD */
1449 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1450 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1451 }
1452
1453
1454 static int xcvr_diag_bcm870x(struct niu *np)
1455 {
1456 u16 analog_stat0, tx_alarm_status;
1457 int err = 0;
1458
1459 #if 1
1460 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1461 MII_STAT1000);
1462 if (err < 0)
1463 return err;
1464 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1465
1466 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1467 if (err < 0)
1468 return err;
1469 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1470
1471 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1472 MII_NWAYTEST);
1473 if (err < 0)
1474 return err;
1475 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1476 #endif
1477
1478 /* XXX dig this out it might not be so useful XXX */
1479 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1480 BCM8704_USER_ANALOG_STATUS0);
1481 if (err < 0)
1482 return err;
1483 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1484 BCM8704_USER_ANALOG_STATUS0);
1485 if (err < 0)
1486 return err;
1487 analog_stat0 = err;
1488
1489 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1490 BCM8704_USER_TX_ALARM_STATUS);
1491 if (err < 0)
1492 return err;
1493 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1494 BCM8704_USER_TX_ALARM_STATUS);
1495 if (err < 0)
1496 return err;
1497 tx_alarm_status = err;
1498
1499 if (analog_stat0 != 0x03fc) {
1500 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1501 pr_info("Port %u cable not connected or bad cable\n",
1502 np->port);
1503 } else if (analog_stat0 == 0x639c) {
1504 pr_info("Port %u optical module is bad or missing\n",
1505 np->port);
1506 }
1507 }
1508
1509 return 0;
1510 }
1511
1512 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1513 {
1514 struct niu_link_config *lp = &np->link_config;
1515 int err;
1516
1517 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1518 MII_BMCR);
1519 if (err < 0)
1520 return err;
1521
1522 err &= ~BMCR_LOOPBACK;
1523
1524 if (lp->loopback_mode == LOOPBACK_MAC)
1525 err |= BMCR_LOOPBACK;
1526
1527 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1528 MII_BMCR, err);
1529 if (err)
1530 return err;
1531
1532 return 0;
1533 }
1534
1535 static int xcvr_init_10g_bcm8706(struct niu *np)
1536 {
1537 int err = 0;
1538 u64 val;
1539
1540 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1541 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1542 return err;
1543
1544 val = nr64_mac(XMAC_CONFIG);
1545 val &= ~XMAC_CONFIG_LED_POLARITY;
1546 val |= XMAC_CONFIG_FORCE_LED_ON;
1547 nw64_mac(XMAC_CONFIG, val);
1548
1549 val = nr64(MIF_CONFIG);
1550 val |= MIF_CONFIG_INDIRECT_MODE;
1551 nw64(MIF_CONFIG, val);
1552
1553 err = bcm8704_reset(np);
1554 if (err)
1555 return err;
1556
1557 err = xcvr_10g_set_lb_bcm870x(np);
1558 if (err)
1559 return err;
1560
1561 err = bcm8706_init_user_dev3(np);
1562 if (err)
1563 return err;
1564
1565 err = xcvr_diag_bcm870x(np);
1566 if (err)
1567 return err;
1568
1569 return 0;
1570 }
1571
1572 static int xcvr_init_10g_bcm8704(struct niu *np)
1573 {
1574 int err;
1575
1576 err = bcm8704_reset(np);
1577 if (err)
1578 return err;
1579
1580 err = bcm8704_init_user_dev3(np);
1581 if (err)
1582 return err;
1583
1584 err = xcvr_10g_set_lb_bcm870x(np);
1585 if (err)
1586 return err;
1587
1588 err = xcvr_diag_bcm870x(np);
1589 if (err)
1590 return err;
1591
1592 return 0;
1593 }
1594
1595 static int xcvr_init_10g(struct niu *np)
1596 {
1597 int phy_id, err;
1598 u64 val;
1599
1600 val = nr64_mac(XMAC_CONFIG);
1601 val &= ~XMAC_CONFIG_LED_POLARITY;
1602 val |= XMAC_CONFIG_FORCE_LED_ON;
1603 nw64_mac(XMAC_CONFIG, val);
1604
1605 /* XXX shared resource, lock parent XXX */
1606 val = nr64(MIF_CONFIG);
1607 val |= MIF_CONFIG_INDIRECT_MODE;
1608 nw64(MIF_CONFIG, val);
1609
1610 phy_id = phy_decode(np->parent->port_phy, np->port);
1611 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1612
1613 /* handle different phy types */
1614 switch (phy_id & NIU_PHY_ID_MASK) {
1615 case NIU_PHY_ID_MRVL88X2011:
1616 err = xcvr_init_10g_mrvl88x2011(np);
1617 break;
1618
1619 default: /* bcom 8704 */
1620 err = xcvr_init_10g_bcm8704(np);
1621 break;
1622 }
1623
1624 return err;
1625 }
1626
1627 static int mii_reset(struct niu *np)
1628 {
1629 int limit, err;
1630
1631 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1632 if (err)
1633 return err;
1634
1635 limit = 1000;
1636 while (--limit >= 0) {
1637 udelay(500);
1638 err = mii_read(np, np->phy_addr, MII_BMCR);
1639 if (err < 0)
1640 return err;
1641 if (!(err & BMCR_RESET))
1642 break;
1643 }
1644 if (limit < 0) {
1645 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1646 np->port, err);
1647 return -ENODEV;
1648 }
1649
1650 return 0;
1651 }
1652
1653 static int xcvr_init_1g_rgmii(struct niu *np)
1654 {
1655 int err;
1656 u64 val;
1657 u16 bmcr, bmsr, estat;
1658
1659 val = nr64(MIF_CONFIG);
1660 val &= ~MIF_CONFIG_INDIRECT_MODE;
1661 nw64(MIF_CONFIG, val);
1662
1663 err = mii_reset(np);
1664 if (err)
1665 return err;
1666
1667 err = mii_read(np, np->phy_addr, MII_BMSR);
1668 if (err < 0)
1669 return err;
1670 bmsr = err;
1671
1672 estat = 0;
1673 if (bmsr & BMSR_ESTATEN) {
1674 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1675 if (err < 0)
1676 return err;
1677 estat = err;
1678 }
1679
1680 bmcr = 0;
1681 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1682 if (err)
1683 return err;
1684
1685 if (bmsr & BMSR_ESTATEN) {
1686 u16 ctrl1000 = 0;
1687
1688 if (estat & ESTATUS_1000_TFULL)
1689 ctrl1000 |= ADVERTISE_1000FULL;
1690 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1691 if (err)
1692 return err;
1693 }
1694
1695 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1696
1697 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1698 if (err)
1699 return err;
1700
1701 err = mii_read(np, np->phy_addr, MII_BMCR);
1702 if (err < 0)
1703 return err;
1704 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1705
1706 err = mii_read(np, np->phy_addr, MII_BMSR);
1707 if (err < 0)
1708 return err;
1709
1710 return 0;
1711 }
1712
1713 static int mii_init_common(struct niu *np)
1714 {
1715 struct niu_link_config *lp = &np->link_config;
1716 u16 bmcr, bmsr, adv, estat;
1717 int err;
1718
1719 err = mii_reset(np);
1720 if (err)
1721 return err;
1722
1723 err = mii_read(np, np->phy_addr, MII_BMSR);
1724 if (err < 0)
1725 return err;
1726 bmsr = err;
1727
1728 estat = 0;
1729 if (bmsr & BMSR_ESTATEN) {
1730 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1731 if (err < 0)
1732 return err;
1733 estat = err;
1734 }
1735
1736 bmcr = 0;
1737 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1738 if (err)
1739 return err;
1740
1741 if (lp->loopback_mode == LOOPBACK_MAC) {
1742 bmcr |= BMCR_LOOPBACK;
1743 if (lp->active_speed == SPEED_1000)
1744 bmcr |= BMCR_SPEED1000;
1745 if (lp->active_duplex == DUPLEX_FULL)
1746 bmcr |= BMCR_FULLDPLX;
1747 }
1748
1749 if (lp->loopback_mode == LOOPBACK_PHY) {
1750 u16 aux;
1751
1752 aux = (BCM5464R_AUX_CTL_EXT_LB |
1753 BCM5464R_AUX_CTL_WRITE_1);
1754 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1755 if (err)
1756 return err;
1757 }
1758
1759 if (lp->autoneg) {
1760 u16 ctrl1000;
1761
1762 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1763 if ((bmsr & BMSR_10HALF) &&
1764 (lp->advertising & ADVERTISED_10baseT_Half))
1765 adv |= ADVERTISE_10HALF;
1766 if ((bmsr & BMSR_10FULL) &&
1767 (lp->advertising & ADVERTISED_10baseT_Full))
1768 adv |= ADVERTISE_10FULL;
1769 if ((bmsr & BMSR_100HALF) &&
1770 (lp->advertising & ADVERTISED_100baseT_Half))
1771 adv |= ADVERTISE_100HALF;
1772 if ((bmsr & BMSR_100FULL) &&
1773 (lp->advertising & ADVERTISED_100baseT_Full))
1774 adv |= ADVERTISE_100FULL;
1775 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1776 if (err)
1777 return err;
1778
1779 if (likely(bmsr & BMSR_ESTATEN)) {
1780 ctrl1000 = 0;
1781 if ((estat & ESTATUS_1000_THALF) &&
1782 (lp->advertising & ADVERTISED_1000baseT_Half))
1783 ctrl1000 |= ADVERTISE_1000HALF;
1784 if ((estat & ESTATUS_1000_TFULL) &&
1785 (lp->advertising & ADVERTISED_1000baseT_Full))
1786 ctrl1000 |= ADVERTISE_1000FULL;
1787 err = mii_write(np, np->phy_addr,
1788 MII_CTRL1000, ctrl1000);
1789 if (err)
1790 return err;
1791 }
1792
1793 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1794 } else {
1795 /* !lp->autoneg */
1796 int fulldpx;
1797
1798 if (lp->duplex == DUPLEX_FULL) {
1799 bmcr |= BMCR_FULLDPLX;
1800 fulldpx = 1;
1801 } else if (lp->duplex == DUPLEX_HALF)
1802 fulldpx = 0;
1803 else
1804 return -EINVAL;
1805
1806 if (lp->speed == SPEED_1000) {
1807 /* if X-full requested while not supported, or
1808 X-half requested while not supported... */
1809 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1810 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1811 return -EINVAL;
1812 bmcr |= BMCR_SPEED1000;
1813 } else if (lp->speed == SPEED_100) {
1814 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1815 (!fulldpx && !(bmsr & BMSR_100HALF)))
1816 return -EINVAL;
1817 bmcr |= BMCR_SPEED100;
1818 } else if (lp->speed == SPEED_10) {
1819 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1820 (!fulldpx && !(bmsr & BMSR_10HALF)))
1821 return -EINVAL;
1822 } else
1823 return -EINVAL;
1824 }
1825
1826 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1827 if (err)
1828 return err;
1829
1830 #if 0
1831 err = mii_read(np, np->phy_addr, MII_BMCR);
1832 if (err < 0)
1833 return err;
1834 bmcr = err;
1835
1836 err = mii_read(np, np->phy_addr, MII_BMSR);
1837 if (err < 0)
1838 return err;
1839 bmsr = err;
1840
1841 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1842 np->port, bmcr, bmsr);
1843 #endif
1844
1845 return 0;
1846 }
1847
1848 static int xcvr_init_1g(struct niu *np)
1849 {
1850 u64 val;
1851
1852 /* XXX shared resource, lock parent XXX */
1853 val = nr64(MIF_CONFIG);
1854 val &= ~MIF_CONFIG_INDIRECT_MODE;
1855 nw64(MIF_CONFIG, val);
1856
1857 return mii_init_common(np);
1858 }
1859
1860 static int niu_xcvr_init(struct niu *np)
1861 {
1862 const struct niu_phy_ops *ops = np->phy_ops;
1863 int err;
1864
1865 err = 0;
1866 if (ops->xcvr_init)
1867 err = ops->xcvr_init(np);
1868
1869 return err;
1870 }
1871
1872 static int niu_serdes_init(struct niu *np)
1873 {
1874 const struct niu_phy_ops *ops = np->phy_ops;
1875 int err;
1876
1877 err = 0;
1878 if (ops->serdes_init)
1879 err = ops->serdes_init(np);
1880
1881 return err;
1882 }
1883
1884 static void niu_init_xif(struct niu *);
1885 static void niu_handle_led(struct niu *, int status);
1886
1887 static int niu_link_status_common(struct niu *np, int link_up)
1888 {
1889 struct niu_link_config *lp = &np->link_config;
1890 struct net_device *dev = np->dev;
1891 unsigned long flags;
1892
1893 if (!netif_carrier_ok(dev) && link_up) {
1894 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1895 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1896 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1897 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1898 "10Mbit/sec",
1899 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1900
1901 spin_lock_irqsave(&np->lock, flags);
1902 niu_init_xif(np);
1903 niu_handle_led(np, 1);
1904 spin_unlock_irqrestore(&np->lock, flags);
1905
1906 netif_carrier_on(dev);
1907 } else if (netif_carrier_ok(dev) && !link_up) {
1908 netif_warn(np, link, dev, "Link is down\n");
1909 spin_lock_irqsave(&np->lock, flags);
1910 niu_handle_led(np, 0);
1911 spin_unlock_irqrestore(&np->lock, flags);
1912 netif_carrier_off(dev);
1913 }
1914
1915 return 0;
1916 }
1917
1918 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1919 {
1920 int err, link_up, pma_status, pcs_status;
1921
1922 link_up = 0;
1923
1924 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1925 MRVL88X2011_10G_PMD_STATUS_2);
1926 if (err < 0)
1927 goto out;
1928
1929 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1930 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1931 MRVL88X2011_PMA_PMD_STATUS_1);
1932 if (err < 0)
1933 goto out;
1934
1935 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1936
1937 /* Check PMC Register : 3.0001.2 == 1: read twice */
1938 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1939 MRVL88X2011_PMA_PMD_STATUS_1);
1940 if (err < 0)
1941 goto out;
1942
1943 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1944 MRVL88X2011_PMA_PMD_STATUS_1);
1945 if (err < 0)
1946 goto out;
1947
1948 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1949
1950 /* Check XGXS Register : 4.0018.[0-3,12] */
1951 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1952 MRVL88X2011_10G_XGXS_LANE_STAT);
1953 if (err < 0)
1954 goto out;
1955
1956 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1957 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1958 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1959 0x800))
1960 link_up = (pma_status && pcs_status) ? 1 : 0;
1961
1962 np->link_config.active_speed = SPEED_10000;
1963 np->link_config.active_duplex = DUPLEX_FULL;
1964 err = 0;
1965 out:
1966 mrvl88x2011_act_led(np, (link_up ?
1967 MRVL88X2011_LED_CTL_PCS_ACT :
1968 MRVL88X2011_LED_CTL_OFF));
1969
1970 *link_up_p = link_up;
1971 return err;
1972 }
1973
1974 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1975 {
1976 int err, link_up;
1977 link_up = 0;
1978
1979 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1980 BCM8704_PMD_RCV_SIGDET);
1981 if (err < 0 || err == 0xffff)
1982 goto out;
1983 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1984 err = 0;
1985 goto out;
1986 }
1987
1988 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1989 BCM8704_PCS_10G_R_STATUS);
1990 if (err < 0)
1991 goto out;
1992
1993 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1994 err = 0;
1995 goto out;
1996 }
1997
1998 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1999 BCM8704_PHYXS_XGXS_LANE_STAT);
2000 if (err < 0)
2001 goto out;
2002 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2003 PHYXS_XGXS_LANE_STAT_MAGIC |
2004 PHYXS_XGXS_LANE_STAT_PATTEST |
2005 PHYXS_XGXS_LANE_STAT_LANE3 |
2006 PHYXS_XGXS_LANE_STAT_LANE2 |
2007 PHYXS_XGXS_LANE_STAT_LANE1 |
2008 PHYXS_XGXS_LANE_STAT_LANE0)) {
2009 err = 0;
2010 np->link_config.active_speed = SPEED_INVALID;
2011 np->link_config.active_duplex = DUPLEX_INVALID;
2012 goto out;
2013 }
2014
2015 link_up = 1;
2016 np->link_config.active_speed = SPEED_10000;
2017 np->link_config.active_duplex = DUPLEX_FULL;
2018 err = 0;
2019
2020 out:
2021 *link_up_p = link_up;
2022 return err;
2023 }
2024
2025 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2026 {
2027 int err, link_up;
2028
2029 link_up = 0;
2030
2031 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2032 BCM8704_PMD_RCV_SIGDET);
2033 if (err < 0)
2034 goto out;
2035 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2036 err = 0;
2037 goto out;
2038 }
2039
2040 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2041 BCM8704_PCS_10G_R_STATUS);
2042 if (err < 0)
2043 goto out;
2044 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2045 err = 0;
2046 goto out;
2047 }
2048
2049 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2050 BCM8704_PHYXS_XGXS_LANE_STAT);
2051 if (err < 0)
2052 goto out;
2053
2054 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2055 PHYXS_XGXS_LANE_STAT_MAGIC |
2056 PHYXS_XGXS_LANE_STAT_LANE3 |
2057 PHYXS_XGXS_LANE_STAT_LANE2 |
2058 PHYXS_XGXS_LANE_STAT_LANE1 |
2059 PHYXS_XGXS_LANE_STAT_LANE0)) {
2060 err = 0;
2061 goto out;
2062 }
2063
2064 link_up = 1;
2065 np->link_config.active_speed = SPEED_10000;
2066 np->link_config.active_duplex = DUPLEX_FULL;
2067 err = 0;
2068
2069 out:
2070 *link_up_p = link_up;
2071 return err;
2072 }
2073
2074 static int link_status_10g(struct niu *np, int *link_up_p)
2075 {
2076 unsigned long flags;
2077 int err = -EINVAL;
2078
2079 spin_lock_irqsave(&np->lock, flags);
2080
2081 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2082 int phy_id;
2083
2084 phy_id = phy_decode(np->parent->port_phy, np->port);
2085 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2086
2087 /* handle different phy types */
2088 switch (phy_id & NIU_PHY_ID_MASK) {
2089 case NIU_PHY_ID_MRVL88X2011:
2090 err = link_status_10g_mrvl(np, link_up_p);
2091 break;
2092
2093 default: /* bcom 8704 */
2094 err = link_status_10g_bcom(np, link_up_p);
2095 break;
2096 }
2097 }
2098
2099 spin_unlock_irqrestore(&np->lock, flags);
2100
2101 return err;
2102 }
2103
2104 static int niu_10g_phy_present(struct niu *np)
2105 {
2106 u64 sig, mask, val;
2107
2108 sig = nr64(ESR_INT_SIGNALS);
2109 switch (np->port) {
2110 case 0:
2111 mask = ESR_INT_SIGNALS_P0_BITS;
2112 val = (ESR_INT_SRDY0_P0 |
2113 ESR_INT_DET0_P0 |
2114 ESR_INT_XSRDY_P0 |
2115 ESR_INT_XDP_P0_CH3 |
2116 ESR_INT_XDP_P0_CH2 |
2117 ESR_INT_XDP_P0_CH1 |
2118 ESR_INT_XDP_P0_CH0);
2119 break;
2120
2121 case 1:
2122 mask = ESR_INT_SIGNALS_P1_BITS;
2123 val = (ESR_INT_SRDY0_P1 |
2124 ESR_INT_DET0_P1 |
2125 ESR_INT_XSRDY_P1 |
2126 ESR_INT_XDP_P1_CH3 |
2127 ESR_INT_XDP_P1_CH2 |
2128 ESR_INT_XDP_P1_CH1 |
2129 ESR_INT_XDP_P1_CH0);
2130 break;
2131
2132 default:
2133 return 0;
2134 }
2135
2136 if ((sig & mask) != val)
2137 return 0;
2138 return 1;
2139 }
2140
2141 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2142 {
2143 unsigned long flags;
2144 int err = 0;
2145 int phy_present;
2146 int phy_present_prev;
2147
2148 spin_lock_irqsave(&np->lock, flags);
2149
2150 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2151 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2152 1 : 0;
2153 phy_present = niu_10g_phy_present(np);
2154 if (phy_present != phy_present_prev) {
2155 /* state change */
2156 if (phy_present) {
2157 /* A NEM was just plugged in */
2158 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2159 if (np->phy_ops->xcvr_init)
2160 err = np->phy_ops->xcvr_init(np);
2161 if (err) {
2162 err = mdio_read(np, np->phy_addr,
2163 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2164 if (err == 0xffff) {
2165 /* No mdio, back-to-back XAUI */
2166 goto out;
2167 }
2168 /* debounce */
2169 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2170 }
2171 } else {
2172 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2173 *link_up_p = 0;
2174 netif_warn(np, link, np->dev,
2175 "Hotplug PHY Removed\n");
2176 }
2177 }
2178 out:
2179 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2180 err = link_status_10g_bcm8706(np, link_up_p);
2181 if (err == 0xffff) {
2182 /* No mdio, back-to-back XAUI: it is C10NEM */
2183 *link_up_p = 1;
2184 np->link_config.active_speed = SPEED_10000;
2185 np->link_config.active_duplex = DUPLEX_FULL;
2186 }
2187 }
2188 }
2189
2190 spin_unlock_irqrestore(&np->lock, flags);
2191
2192 return 0;
2193 }
2194
2195 static int niu_link_status(struct niu *np, int *link_up_p)
2196 {
2197 const struct niu_phy_ops *ops = np->phy_ops;
2198 int err;
2199
2200 err = 0;
2201 if (ops->link_status)
2202 err = ops->link_status(np, link_up_p);
2203
2204 return err;
2205 }
2206
2207 static void niu_timer(struct timer_list *t)
2208 {
2209 struct niu *np = from_timer(np, t, timer);
2210 unsigned long off;
2211 int err, link_up;
2212
2213 err = niu_link_status(np, &link_up);
2214 if (!err)
2215 niu_link_status_common(np, link_up);
2216
2217 if (netif_carrier_ok(np->dev))
2218 off = 5 * HZ;
2219 else
2220 off = 1 * HZ;
2221 np->timer.expires = jiffies + off;
2222
2223 add_timer(&np->timer);
2224 }
2225
2226 static const struct niu_phy_ops phy_ops_10g_serdes = {
2227 .serdes_init = serdes_init_10g_serdes,
2228 .link_status = link_status_10g_serdes,
2229 };
2230
2231 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2232 .serdes_init = serdes_init_niu_10g_serdes,
2233 .link_status = link_status_10g_serdes,
2234 };
2235
2236 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2237 .serdes_init = serdes_init_niu_1g_serdes,
2238 .link_status = link_status_1g_serdes,
2239 };
2240
2241 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2242 .xcvr_init = xcvr_init_1g_rgmii,
2243 .link_status = link_status_1g_rgmii,
2244 };
2245
2246 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2247 .serdes_init = serdes_init_niu_10g_fiber,
2248 .xcvr_init = xcvr_init_10g,
2249 .link_status = link_status_10g,
2250 };
2251
2252 static const struct niu_phy_ops phy_ops_10g_fiber = {
2253 .serdes_init = serdes_init_10g,
2254 .xcvr_init = xcvr_init_10g,
2255 .link_status = link_status_10g,
2256 };
2257
2258 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2259 .serdes_init = serdes_init_10g,
2260 .xcvr_init = xcvr_init_10g_bcm8706,
2261 .link_status = link_status_10g_hotplug,
2262 };
2263
2264 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2265 .serdes_init = serdes_init_niu_10g_fiber,
2266 .xcvr_init = xcvr_init_10g_bcm8706,
2267 .link_status = link_status_10g_hotplug,
2268 };
2269
2270 static const struct niu_phy_ops phy_ops_10g_copper = {
2271 .serdes_init = serdes_init_10g,
2272 .link_status = link_status_10g, /* XXX */
2273 };
2274
2275 static const struct niu_phy_ops phy_ops_1g_fiber = {
2276 .serdes_init = serdes_init_1g,
2277 .xcvr_init = xcvr_init_1g,
2278 .link_status = link_status_1g,
2279 };
2280
2281 static const struct niu_phy_ops phy_ops_1g_copper = {
2282 .xcvr_init = xcvr_init_1g,
2283 .link_status = link_status_1g,
2284 };
2285
2286 struct niu_phy_template {
2287 const struct niu_phy_ops *ops;
2288 u32 phy_addr_base;
2289 };
2290
2291 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2292 .ops = &phy_ops_10g_fiber_niu,
2293 .phy_addr_base = 16,
2294 };
2295
2296 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2297 .ops = &phy_ops_10g_serdes_niu,
2298 .phy_addr_base = 0,
2299 };
2300
2301 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2302 .ops = &phy_ops_1g_serdes_niu,
2303 .phy_addr_base = 0,
2304 };
2305
2306 static const struct niu_phy_template phy_template_10g_fiber = {
2307 .ops = &phy_ops_10g_fiber,
2308 .phy_addr_base = 8,
2309 };
2310
2311 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2312 .ops = &phy_ops_10g_fiber_hotplug,
2313 .phy_addr_base = 8,
2314 };
2315
2316 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2317 .ops = &phy_ops_niu_10g_hotplug,
2318 .phy_addr_base = 8,
2319 };
2320
2321 static const struct niu_phy_template phy_template_10g_copper = {
2322 .ops = &phy_ops_10g_copper,
2323 .phy_addr_base = 10,
2324 };
2325
2326 static const struct niu_phy_template phy_template_1g_fiber = {
2327 .ops = &phy_ops_1g_fiber,
2328 .phy_addr_base = 0,
2329 };
2330
2331 static const struct niu_phy_template phy_template_1g_copper = {
2332 .ops = &phy_ops_1g_copper,
2333 .phy_addr_base = 0,
2334 };
2335
2336 static const struct niu_phy_template phy_template_1g_rgmii = {
2337 .ops = &phy_ops_1g_rgmii,
2338 .phy_addr_base = 0,
2339 };
2340
2341 static const struct niu_phy_template phy_template_10g_serdes = {
2342 .ops = &phy_ops_10g_serdes,
2343 .phy_addr_base = 0,
2344 };
2345
2346 static int niu_atca_port_num[4] = {
2347 0, 0, 11, 10
2348 };
2349
2350 static int serdes_init_10g_serdes(struct niu *np)
2351 {
2352 struct niu_link_config *lp = &np->link_config;
2353 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2354 u64 ctrl_val, test_cfg_val, sig, mask, val;
2355
2356 switch (np->port) {
2357 case 0:
2358 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2359 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2360 pll_cfg = ENET_SERDES_0_PLL_CFG;
2361 break;
2362 case 1:
2363 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2364 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2365 pll_cfg = ENET_SERDES_1_PLL_CFG;
2366 break;
2367
2368 default:
2369 return -EINVAL;
2370 }
2371 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2372 ENET_SERDES_CTRL_SDET_1 |
2373 ENET_SERDES_CTRL_SDET_2 |
2374 ENET_SERDES_CTRL_SDET_3 |
2375 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2376 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2377 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2378 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2379 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2380 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2381 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2382 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2383 test_cfg_val = 0;
2384
2385 if (lp->loopback_mode == LOOPBACK_PHY) {
2386 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2387 ENET_SERDES_TEST_MD_0_SHIFT) |
2388 (ENET_TEST_MD_PAD_LOOPBACK <<
2389 ENET_SERDES_TEST_MD_1_SHIFT) |
2390 (ENET_TEST_MD_PAD_LOOPBACK <<
2391 ENET_SERDES_TEST_MD_2_SHIFT) |
2392 (ENET_TEST_MD_PAD_LOOPBACK <<
2393 ENET_SERDES_TEST_MD_3_SHIFT));
2394 }
2395
2396 esr_reset(np);
2397 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2398 nw64(ctrl_reg, ctrl_val);
2399 nw64(test_cfg_reg, test_cfg_val);
2400
2401 /* Initialize all 4 lanes of the SERDES. */
2402 for (i = 0; i < 4; i++) {
2403 u32 rxtx_ctrl, glue0;
2404 int err;
2405
2406 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2407 if (err)
2408 return err;
2409 err = esr_read_glue0(np, i, &glue0);
2410 if (err)
2411 return err;
2412
2413 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2414 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2415 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2416
2417 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2418 ESR_GLUE_CTRL0_THCNT |
2419 ESR_GLUE_CTRL0_BLTIME);
2420 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2421 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2422 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2423 (BLTIME_300_CYCLES <<
2424 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2425
2426 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2427 if (err)
2428 return err;
2429 err = esr_write_glue0(np, i, glue0);
2430 if (err)
2431 return err;
2432 }
2433
2434
2435 sig = nr64(ESR_INT_SIGNALS);
2436 switch (np->port) {
2437 case 0:
2438 mask = ESR_INT_SIGNALS_P0_BITS;
2439 val = (ESR_INT_SRDY0_P0 |
2440 ESR_INT_DET0_P0 |
2441 ESR_INT_XSRDY_P0 |
2442 ESR_INT_XDP_P0_CH3 |
2443 ESR_INT_XDP_P0_CH2 |
2444 ESR_INT_XDP_P0_CH1 |
2445 ESR_INT_XDP_P0_CH0);
2446 break;
2447
2448 case 1:
2449 mask = ESR_INT_SIGNALS_P1_BITS;
2450 val = (ESR_INT_SRDY0_P1 |
2451 ESR_INT_DET0_P1 |
2452 ESR_INT_XSRDY_P1 |
2453 ESR_INT_XDP_P1_CH3 |
2454 ESR_INT_XDP_P1_CH2 |
2455 ESR_INT_XDP_P1_CH1 |
2456 ESR_INT_XDP_P1_CH0);
2457 break;
2458
2459 default:
2460 return -EINVAL;
2461 }
2462
2463 if ((sig & mask) != val) {
2464 int err;
2465 err = serdes_init_1g_serdes(np);
2466 if (!err) {
2467 np->flags &= ~NIU_FLAGS_10G;
2468 np->mac_xcvr = MAC_XCVR_PCS;
2469 } else {
2470 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2471 np->port);
2472 return -ENODEV;
2473 }
2474 }
2475
2476 return 0;
2477 }
2478
2479 static int niu_determine_phy_disposition(struct niu *np)
2480 {
2481 struct niu_parent *parent = np->parent;
2482 u8 plat_type = parent->plat_type;
2483 const struct niu_phy_template *tp;
2484 u32 phy_addr_off = 0;
2485
2486 if (plat_type == PLAT_TYPE_NIU) {
2487 switch (np->flags &
2488 (NIU_FLAGS_10G |
2489 NIU_FLAGS_FIBER |
2490 NIU_FLAGS_XCVR_SERDES)) {
2491 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2492 /* 10G Serdes */
2493 tp = &phy_template_niu_10g_serdes;
2494 break;
2495 case NIU_FLAGS_XCVR_SERDES:
2496 /* 1G Serdes */
2497 tp = &phy_template_niu_1g_serdes;
2498 break;
2499 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2500 /* 10G Fiber */
2501 default:
2502 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2503 tp = &phy_template_niu_10g_hotplug;
2504 if (np->port == 0)
2505 phy_addr_off = 8;
2506 if (np->port == 1)
2507 phy_addr_off = 12;
2508 } else {
2509 tp = &phy_template_niu_10g_fiber;
2510 phy_addr_off += np->port;
2511 }
2512 break;
2513 }
2514 } else {
2515 switch (np->flags &
2516 (NIU_FLAGS_10G |
2517 NIU_FLAGS_FIBER |
2518 NIU_FLAGS_XCVR_SERDES)) {
2519 case 0:
2520 /* 1G copper */
2521 tp = &phy_template_1g_copper;
2522 if (plat_type == PLAT_TYPE_VF_P0)
2523 phy_addr_off = 10;
2524 else if (plat_type == PLAT_TYPE_VF_P1)
2525 phy_addr_off = 26;
2526
2527 phy_addr_off += (np->port ^ 0x3);
2528 break;
2529
2530 case NIU_FLAGS_10G:
2531 /* 10G copper */
2532 tp = &phy_template_10g_copper;
2533 break;
2534
2535 case NIU_FLAGS_FIBER:
2536 /* 1G fiber */
2537 tp = &phy_template_1g_fiber;
2538 break;
2539
2540 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2541 /* 10G fiber */
2542 tp = &phy_template_10g_fiber;
2543 if (plat_type == PLAT_TYPE_VF_P0 ||
2544 plat_type == PLAT_TYPE_VF_P1)
2545 phy_addr_off = 8;
2546 phy_addr_off += np->port;
2547 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2548 tp = &phy_template_10g_fiber_hotplug;
2549 if (np->port == 0)
2550 phy_addr_off = 8;
2551 if (np->port == 1)
2552 phy_addr_off = 12;
2553 }
2554 break;
2555
2556 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2557 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2558 case NIU_FLAGS_XCVR_SERDES:
2559 switch(np->port) {
2560 case 0:
2561 case 1:
2562 tp = &phy_template_10g_serdes;
2563 break;
2564 case 2:
2565 case 3:
2566 tp = &phy_template_1g_rgmii;
2567 break;
2568 default:
2569 return -EINVAL;
2570 }
2571 phy_addr_off = niu_atca_port_num[np->port];
2572 break;
2573
2574 default:
2575 return -EINVAL;
2576 }
2577 }
2578
2579 np->phy_ops = tp->ops;
2580 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2581
2582 return 0;
2583 }
2584
2585 static int niu_init_link(struct niu *np)
2586 {
2587 struct niu_parent *parent = np->parent;
2588 int err, ignore;
2589
2590 if (parent->plat_type == PLAT_TYPE_NIU) {
2591 err = niu_xcvr_init(np);
2592 if (err)
2593 return err;
2594 msleep(200);
2595 }
2596 err = niu_serdes_init(np);
2597 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2598 return err;
2599 msleep(200);
2600 err = niu_xcvr_init(np);
2601 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2602 niu_link_status(np, &ignore);
2603 return 0;
2604 }
2605
2606 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2607 {
2608 u16 reg0 = addr[4] << 8 | addr[5];
2609 u16 reg1 = addr[2] << 8 | addr[3];
2610 u16 reg2 = addr[0] << 8 | addr[1];
2611
2612 if (np->flags & NIU_FLAGS_XMAC) {
2613 nw64_mac(XMAC_ADDR0, reg0);
2614 nw64_mac(XMAC_ADDR1, reg1);
2615 nw64_mac(XMAC_ADDR2, reg2);
2616 } else {
2617 nw64_mac(BMAC_ADDR0, reg0);
2618 nw64_mac(BMAC_ADDR1, reg1);
2619 nw64_mac(BMAC_ADDR2, reg2);
2620 }
2621 }
2622
2623 static int niu_num_alt_addr(struct niu *np)
2624 {
2625 if (np->flags & NIU_FLAGS_XMAC)
2626 return XMAC_NUM_ALT_ADDR;
2627 else
2628 return BMAC_NUM_ALT_ADDR;
2629 }
2630
2631 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2632 {
2633 u16 reg0 = addr[4] << 8 | addr[5];
2634 u16 reg1 = addr[2] << 8 | addr[3];
2635 u16 reg2 = addr[0] << 8 | addr[1];
2636
2637 if (index >= niu_num_alt_addr(np))
2638 return -EINVAL;
2639
2640 if (np->flags & NIU_FLAGS_XMAC) {
2641 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2642 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2643 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2644 } else {
2645 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2646 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2647 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2648 }
2649
2650 return 0;
2651 }
2652
2653 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2654 {
2655 unsigned long reg;
2656 u64 val, mask;
2657
2658 if (index >= niu_num_alt_addr(np))
2659 return -EINVAL;
2660
2661 if (np->flags & NIU_FLAGS_XMAC) {
2662 reg = XMAC_ADDR_CMPEN;
2663 mask = 1 << index;
2664 } else {
2665 reg = BMAC_ADDR_CMPEN;
2666 mask = 1 << (index + 1);
2667 }
2668
2669 val = nr64_mac(reg);
2670 if (on)
2671 val |= mask;
2672 else
2673 val &= ~mask;
2674 nw64_mac(reg, val);
2675
2676 return 0;
2677 }
2678
2679 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2680 int num, int mac_pref)
2681 {
2682 u64 val = nr64_mac(reg);
2683 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2684 val |= num;
2685 if (mac_pref)
2686 val |= HOST_INFO_MPR;
2687 nw64_mac(reg, val);
2688 }
2689
2690 static int __set_rdc_table_num(struct niu *np,
2691 int xmac_index, int bmac_index,
2692 int rdc_table_num, int mac_pref)
2693 {
2694 unsigned long reg;
2695
2696 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2697 return -EINVAL;
2698 if (np->flags & NIU_FLAGS_XMAC)
2699 reg = XMAC_HOST_INFO(xmac_index);
2700 else
2701 reg = BMAC_HOST_INFO(bmac_index);
2702 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2703 return 0;
2704 }
2705
2706 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2707 int mac_pref)
2708 {
2709 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2710 }
2711
2712 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2713 int mac_pref)
2714 {
2715 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2716 }
2717
2718 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2719 int table_num, int mac_pref)
2720 {
2721 if (idx >= niu_num_alt_addr(np))
2722 return -EINVAL;
2723 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2724 }
2725
2726 static u64 vlan_entry_set_parity(u64 reg_val)
2727 {
2728 u64 port01_mask;
2729 u64 port23_mask;
2730
2731 port01_mask = 0x00ff;
2732 port23_mask = 0xff00;
2733
2734 if (hweight64(reg_val & port01_mask) & 1)
2735 reg_val |= ENET_VLAN_TBL_PARITY0;
2736 else
2737 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2738
2739 if (hweight64(reg_val & port23_mask) & 1)
2740 reg_val |= ENET_VLAN_TBL_PARITY1;
2741 else
2742 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2743
2744 return reg_val;
2745 }
2746
2747 static void vlan_tbl_write(struct niu *np, unsigned long index,
2748 int port, int vpr, int rdc_table)
2749 {
2750 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2751
2752 reg_val &= ~((ENET_VLAN_TBL_VPR |
2753 ENET_VLAN_TBL_VLANRDCTBLN) <<
2754 ENET_VLAN_TBL_SHIFT(port));
2755 if (vpr)
2756 reg_val |= (ENET_VLAN_TBL_VPR <<
2757 ENET_VLAN_TBL_SHIFT(port));
2758 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2759
2760 reg_val = vlan_entry_set_parity(reg_val);
2761
2762 nw64(ENET_VLAN_TBL(index), reg_val);
2763 }
2764
2765 static void vlan_tbl_clear(struct niu *np)
2766 {
2767 int i;
2768
2769 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2770 nw64(ENET_VLAN_TBL(i), 0);
2771 }
2772
2773 static int tcam_wait_bit(struct niu *np, u64 bit)
2774 {
2775 int limit = 1000;
2776
2777 while (--limit > 0) {
2778 if (nr64(TCAM_CTL) & bit)
2779 break;
2780 udelay(1);
2781 }
2782 if (limit <= 0)
2783 return -ENODEV;
2784
2785 return 0;
2786 }
2787
2788 static int tcam_flush(struct niu *np, int index)
2789 {
2790 nw64(TCAM_KEY_0, 0x00);
2791 nw64(TCAM_KEY_MASK_0, 0xff);
2792 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2793
2794 return tcam_wait_bit(np, TCAM_CTL_STAT);
2795 }
2796
2797 #if 0
2798 static int tcam_read(struct niu *np, int index,
2799 u64 *key, u64 *mask)
2800 {
2801 int err;
2802
2803 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2804 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2805 if (!err) {
2806 key[0] = nr64(TCAM_KEY_0);
2807 key[1] = nr64(TCAM_KEY_1);
2808 key[2] = nr64(TCAM_KEY_2);
2809 key[3] = nr64(TCAM_KEY_3);
2810 mask[0] = nr64(TCAM_KEY_MASK_0);
2811 mask[1] = nr64(TCAM_KEY_MASK_1);
2812 mask[2] = nr64(TCAM_KEY_MASK_2);
2813 mask[3] = nr64(TCAM_KEY_MASK_3);
2814 }
2815 return err;
2816 }
2817 #endif
2818
2819 static int tcam_write(struct niu *np, int index,
2820 u64 *key, u64 *mask)
2821 {
2822 nw64(TCAM_KEY_0, key[0]);
2823 nw64(TCAM_KEY_1, key[1]);
2824 nw64(TCAM_KEY_2, key[2]);
2825 nw64(TCAM_KEY_3, key[3]);
2826 nw64(TCAM_KEY_MASK_0, mask[0]);
2827 nw64(TCAM_KEY_MASK_1, mask[1]);
2828 nw64(TCAM_KEY_MASK_2, mask[2]);
2829 nw64(TCAM_KEY_MASK_3, mask[3]);
2830 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2831
2832 return tcam_wait_bit(np, TCAM_CTL_STAT);
2833 }
2834
2835 #if 0
2836 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2837 {
2838 int err;
2839
2840 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2841 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2842 if (!err)
2843 *data = nr64(TCAM_KEY_1);
2844
2845 return err;
2846 }
2847 #endif
2848
2849 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2850 {
2851 nw64(TCAM_KEY_1, assoc_data);
2852 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2853
2854 return tcam_wait_bit(np, TCAM_CTL_STAT);
2855 }
2856
2857 static void tcam_enable(struct niu *np, int on)
2858 {
2859 u64 val = nr64(FFLP_CFG_1);
2860
2861 if (on)
2862 val &= ~FFLP_CFG_1_TCAM_DIS;
2863 else
2864 val |= FFLP_CFG_1_TCAM_DIS;
2865 nw64(FFLP_CFG_1, val);
2866 }
2867
2868 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2869 {
2870 u64 val = nr64(FFLP_CFG_1);
2871
2872 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2873 FFLP_CFG_1_CAMLAT |
2874 FFLP_CFG_1_CAMRATIO);
2875 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2876 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2877 nw64(FFLP_CFG_1, val);
2878
2879 val = nr64(FFLP_CFG_1);
2880 val |= FFLP_CFG_1_FFLPINITDONE;
2881 nw64(FFLP_CFG_1, val);
2882 }
2883
2884 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2885 int on)
2886 {
2887 unsigned long reg;
2888 u64 val;
2889
2890 if (class < CLASS_CODE_ETHERTYPE1 ||
2891 class > CLASS_CODE_ETHERTYPE2)
2892 return -EINVAL;
2893
2894 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2895 val = nr64(reg);
2896 if (on)
2897 val |= L2_CLS_VLD;
2898 else
2899 val &= ~L2_CLS_VLD;
2900 nw64(reg, val);
2901
2902 return 0;
2903 }
2904
2905 #if 0
2906 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2907 u64 ether_type)
2908 {
2909 unsigned long reg;
2910 u64 val;
2911
2912 if (class < CLASS_CODE_ETHERTYPE1 ||
2913 class > CLASS_CODE_ETHERTYPE2 ||
2914 (ether_type & ~(u64)0xffff) != 0)
2915 return -EINVAL;
2916
2917 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2918 val = nr64(reg);
2919 val &= ~L2_CLS_ETYPE;
2920 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2921 nw64(reg, val);
2922
2923 return 0;
2924 }
2925 #endif
2926
2927 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2928 int on)
2929 {
2930 unsigned long reg;
2931 u64 val;
2932
2933 if (class < CLASS_CODE_USER_PROG1 ||
2934 class > CLASS_CODE_USER_PROG4)
2935 return -EINVAL;
2936
2937 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2938 val = nr64(reg);
2939 if (on)
2940 val |= L3_CLS_VALID;
2941 else
2942 val &= ~L3_CLS_VALID;
2943 nw64(reg, val);
2944
2945 return 0;
2946 }
2947
2948 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2949 int ipv6, u64 protocol_id,
2950 u64 tos_mask, u64 tos_val)
2951 {
2952 unsigned long reg;
2953 u64 val;
2954
2955 if (class < CLASS_CODE_USER_PROG1 ||
2956 class > CLASS_CODE_USER_PROG4 ||
2957 (protocol_id & ~(u64)0xff) != 0 ||
2958 (tos_mask & ~(u64)0xff) != 0 ||
2959 (tos_val & ~(u64)0xff) != 0)
2960 return -EINVAL;
2961
2962 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2963 val = nr64(reg);
2964 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2965 L3_CLS_TOSMASK | L3_CLS_TOS);
2966 if (ipv6)
2967 val |= L3_CLS_IPVER;
2968 val |= (protocol_id << L3_CLS_PID_SHIFT);
2969 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2970 val |= (tos_val << L3_CLS_TOS_SHIFT);
2971 nw64(reg, val);
2972
2973 return 0;
2974 }
2975
2976 static int tcam_early_init(struct niu *np)
2977 {
2978 unsigned long i;
2979 int err;
2980
2981 tcam_enable(np, 0);
2982 tcam_set_lat_and_ratio(np,
2983 DEFAULT_TCAM_LATENCY,
2984 DEFAULT_TCAM_ACCESS_RATIO);
2985 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
2986 err = tcam_user_eth_class_enable(np, i, 0);
2987 if (err)
2988 return err;
2989 }
2990 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
2991 err = tcam_user_ip_class_enable(np, i, 0);
2992 if (err)
2993 return err;
2994 }
2995
2996 return 0;
2997 }
2998
2999 static int tcam_flush_all(struct niu *np)
3000 {
3001 unsigned long i;
3002
3003 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3004 int err = tcam_flush(np, i);
3005 if (err)
3006 return err;
3007 }
3008 return 0;
3009 }
3010
3011 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3012 {
3013 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3014 }
3015
3016 #if 0
3017 static int hash_read(struct niu *np, unsigned long partition,
3018 unsigned long index, unsigned long num_entries,
3019 u64 *data)
3020 {
3021 u64 val = hash_addr_regval(index, num_entries);
3022 unsigned long i;
3023
3024 if (partition >= FCRAM_NUM_PARTITIONS ||
3025 index + num_entries > FCRAM_SIZE)
3026 return -EINVAL;
3027
3028 nw64(HASH_TBL_ADDR(partition), val);
3029 for (i = 0; i < num_entries; i++)
3030 data[i] = nr64(HASH_TBL_DATA(partition));
3031
3032 return 0;
3033 }
3034 #endif
3035
3036 static int hash_write(struct niu *np, unsigned long partition,
3037 unsigned long index, unsigned long num_entries,
3038 u64 *data)
3039 {
3040 u64 val = hash_addr_regval(index, num_entries);
3041 unsigned long i;
3042
3043 if (partition >= FCRAM_NUM_PARTITIONS ||
3044 index + (num_entries * 8) > FCRAM_SIZE)
3045 return -EINVAL;
3046
3047 nw64(HASH_TBL_ADDR(partition), val);
3048 for (i = 0; i < num_entries; i++)
3049 nw64(HASH_TBL_DATA(partition), data[i]);
3050
3051 return 0;
3052 }
3053
3054 static void fflp_reset(struct niu *np)
3055 {
3056 u64 val;
3057
3058 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3059 udelay(10);
3060 nw64(FFLP_CFG_1, 0);
3061
3062 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3063 nw64(FFLP_CFG_1, val);
3064 }
3065
3066 static void fflp_set_timings(struct niu *np)
3067 {
3068 u64 val = nr64(FFLP_CFG_1);
3069
3070 val &= ~FFLP_CFG_1_FFLPINITDONE;
3071 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3072 nw64(FFLP_CFG_1, val);
3073
3074 val = nr64(FFLP_CFG_1);
3075 val |= FFLP_CFG_1_FFLPINITDONE;
3076 nw64(FFLP_CFG_1, val);
3077
3078 val = nr64(FCRAM_REF_TMR);
3079 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3080 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3081 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3082 nw64(FCRAM_REF_TMR, val);
3083 }
3084
3085 static int fflp_set_partition(struct niu *np, u64 partition,
3086 u64 mask, u64 base, int enable)
3087 {
3088 unsigned long reg;
3089 u64 val;
3090
3091 if (partition >= FCRAM_NUM_PARTITIONS ||
3092 (mask & ~(u64)0x1f) != 0 ||
3093 (base & ~(u64)0x1f) != 0)
3094 return -EINVAL;
3095
3096 reg = FLW_PRT_SEL(partition);
3097
3098 val = nr64(reg);
3099 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3100 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3101 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3102 if (enable)
3103 val |= FLW_PRT_SEL_EXT;
3104 nw64(reg, val);
3105
3106 return 0;
3107 }
3108
3109 static int fflp_disable_all_partitions(struct niu *np)
3110 {
3111 unsigned long i;
3112
3113 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3114 int err = fflp_set_partition(np, 0, 0, 0, 0);
3115 if (err)
3116 return err;
3117 }
3118 return 0;
3119 }
3120
3121 static void fflp_llcsnap_enable(struct niu *np, int on)
3122 {
3123 u64 val = nr64(FFLP_CFG_1);
3124
3125 if (on)
3126 val |= FFLP_CFG_1_LLCSNAP;
3127 else
3128 val &= ~FFLP_CFG_1_LLCSNAP;
3129 nw64(FFLP_CFG_1, val);
3130 }
3131
3132 static void fflp_errors_enable(struct niu *np, int on)
3133 {
3134 u64 val = nr64(FFLP_CFG_1);
3135
3136 if (on)
3137 val &= ~FFLP_CFG_1_ERRORDIS;
3138 else
3139 val |= FFLP_CFG_1_ERRORDIS;
3140 nw64(FFLP_CFG_1, val);
3141 }
3142
3143 static int fflp_hash_clear(struct niu *np)
3144 {
3145 struct fcram_hash_ipv4 ent;
3146 unsigned long i;
3147
3148 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3149 memset(&ent, 0, sizeof(ent));
3150 ent.header = HASH_HEADER_EXT;
3151
3152 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3153 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3154 if (err)
3155 return err;
3156 }
3157 return 0;
3158 }
3159
3160 static int fflp_early_init(struct niu *np)
3161 {
3162 struct niu_parent *parent;
3163 unsigned long flags;
3164 int err;
3165
3166 niu_lock_parent(np, flags);
3167
3168 parent = np->parent;
3169 err = 0;
3170 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3171 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3172 fflp_reset(np);
3173 fflp_set_timings(np);
3174 err = fflp_disable_all_partitions(np);
3175 if (err) {
3176 netif_printk(np, probe, KERN_DEBUG, np->dev,
3177 "fflp_disable_all_partitions failed, err=%d\n",
3178 err);
3179 goto out;
3180 }
3181 }
3182
3183 err = tcam_early_init(np);
3184 if (err) {
3185 netif_printk(np, probe, KERN_DEBUG, np->dev,
3186 "tcam_early_init failed, err=%d\n", err);
3187 goto out;
3188 }
3189 fflp_llcsnap_enable(np, 1);
3190 fflp_errors_enable(np, 0);
3191 nw64(H1POLY, 0);
3192 nw64(H2POLY, 0);
3193
3194 err = tcam_flush_all(np);
3195 if (err) {
3196 netif_printk(np, probe, KERN_DEBUG, np->dev,
3197 "tcam_flush_all failed, err=%d\n", err);
3198 goto out;
3199 }
3200 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3201 err = fflp_hash_clear(np);
3202 if (err) {
3203 netif_printk(np, probe, KERN_DEBUG, np->dev,
3204 "fflp_hash_clear failed, err=%d\n",
3205 err);
3206 goto out;
3207 }
3208 }
3209
3210 vlan_tbl_clear(np);
3211
3212 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3213 }
3214 out:
3215 niu_unlock_parent(np, flags);
3216 return err;
3217 }
3218
3219 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3220 {
3221 if (class_code < CLASS_CODE_USER_PROG1 ||
3222 class_code > CLASS_CODE_SCTP_IPV6)
3223 return -EINVAL;
3224
3225 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3226 return 0;
3227 }
3228
3229 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3230 {
3231 if (class_code < CLASS_CODE_USER_PROG1 ||
3232 class_code > CLASS_CODE_SCTP_IPV6)
3233 return -EINVAL;
3234
3235 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3236 return 0;
3237 }
3238
3239 /* Entries for the ports are interleaved in the TCAM */
3240 static u16 tcam_get_index(struct niu *np, u16 idx)
3241 {
3242 /* One entry reserved for IP fragment rule */
3243 if (idx >= (np->clas.tcam_sz - 1))
3244 idx = 0;
3245 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3246 }
3247
3248 static u16 tcam_get_size(struct niu *np)
3249 {
3250 /* One entry reserved for IP fragment rule */
3251 return np->clas.tcam_sz - 1;
3252 }
3253
3254 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3255 {
3256 /* One entry reserved for IP fragment rule */
3257 return np->clas.tcam_valid_entries - 1;
3258 }
3259
3260 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3261 u32 offset, u32 size, u32 truesize)
3262 {
3263 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3264
3265 skb->len += size;
3266 skb->data_len += size;
3267 skb->truesize += truesize;
3268 }
3269
3270 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3271 {
3272 a >>= PAGE_SHIFT;
3273 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3274
3275 return a & (MAX_RBR_RING_SIZE - 1);
3276 }
3277
3278 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3279 struct page ***link)
3280 {
3281 unsigned int h = niu_hash_rxaddr(rp, addr);
3282 struct page *p, **pp;
3283
3284 addr &= PAGE_MASK;
3285 pp = &rp->rxhash[h];
3286 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3287 if (p->index == addr) {
3288 *link = pp;
3289 goto found;
3290 }
3291 }
3292 BUG();
3293
3294 found:
3295 return p;
3296 }
3297
3298 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3299 {
3300 unsigned int h = niu_hash_rxaddr(rp, base);
3301
3302 page->index = base;
3303 page->mapping = (struct address_space *) rp->rxhash[h];
3304 rp->rxhash[h] = page;
3305 }
3306
3307 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3308 gfp_t mask, int start_index)
3309 {
3310 struct page *page;
3311 u64 addr;
3312 int i;
3313
3314 page = alloc_page(mask);
3315 if (!page)
3316 return -ENOMEM;
3317
3318 addr = np->ops->map_page(np->device, page, 0,
3319 PAGE_SIZE, DMA_FROM_DEVICE);
3320 if (!addr) {
3321 __free_page(page);
3322 return -ENOMEM;
3323 }
3324
3325 niu_hash_page(rp, page, addr);
3326 if (rp->rbr_blocks_per_page > 1)
3327 page_ref_add(page, rp->rbr_blocks_per_page - 1);
3328
3329 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3330 __le32 *rbr = &rp->rbr[start_index + i];
3331
3332 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3333 addr += rp->rbr_block_size;
3334 }
3335
3336 return 0;
3337 }
3338
3339 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3340 {
3341 int index = rp->rbr_index;
3342
3343 rp->rbr_pending++;
3344 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3345 int err = niu_rbr_add_page(np, rp, mask, index);
3346
3347 if (unlikely(err)) {
3348 rp->rbr_pending--;
3349 return;
3350 }
3351
3352 rp->rbr_index += rp->rbr_blocks_per_page;
3353 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3354 if (rp->rbr_index == rp->rbr_table_size)
3355 rp->rbr_index = 0;
3356
3357 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3358 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3359 rp->rbr_pending = 0;
3360 }
3361 }
3362 }
3363
3364 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3365 {
3366 unsigned int index = rp->rcr_index;
3367 int num_rcr = 0;
3368
3369 rp->rx_dropped++;
3370 while (1) {
3371 struct page *page, **link;
3372 u64 addr, val;
3373 u32 rcr_size;
3374
3375 num_rcr++;
3376
3377 val = le64_to_cpup(&rp->rcr[index]);
3378 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3379 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3380 page = niu_find_rxpage(rp, addr, &link);
3381
3382 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3383 RCR_ENTRY_PKTBUFSZ_SHIFT];
3384 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3385 *link = (struct page *) page->mapping;
3386 np->ops->unmap_page(np->device, page->index,
3387 PAGE_SIZE, DMA_FROM_DEVICE);
3388 page->index = 0;
3389 page->mapping = NULL;
3390 __free_page(page);
3391 rp->rbr_refill_pending++;
3392 }
3393
3394 index = NEXT_RCR(rp, index);
3395 if (!(val & RCR_ENTRY_MULTI))
3396 break;
3397
3398 }
3399 rp->rcr_index = index;
3400
3401 return num_rcr;
3402 }
3403
3404 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3405 struct rx_ring_info *rp)
3406 {
3407 unsigned int index = rp->rcr_index;
3408 struct rx_pkt_hdr1 *rh;
3409 struct sk_buff *skb;
3410 int len, num_rcr;
3411
3412 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3413 if (unlikely(!skb))
3414 return niu_rx_pkt_ignore(np, rp);
3415
3416 num_rcr = 0;
3417 while (1) {
3418 struct page *page, **link;
3419 u32 rcr_size, append_size;
3420 u64 addr, val, off;
3421
3422 num_rcr++;
3423
3424 val = le64_to_cpup(&rp->rcr[index]);
3425
3426 len = (val & RCR_ENTRY_L2_LEN) >>
3427 RCR_ENTRY_L2_LEN_SHIFT;
3428 append_size = len + ETH_HLEN + ETH_FCS_LEN;
3429
3430 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3431 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3432 page = niu_find_rxpage(rp, addr, &link);
3433
3434 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3435 RCR_ENTRY_PKTBUFSZ_SHIFT];
3436
3437 off = addr & ~PAGE_MASK;
3438 if (num_rcr == 1) {
3439 int ptype;
3440
3441 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3442 if ((ptype == RCR_PKT_TYPE_TCP ||
3443 ptype == RCR_PKT_TYPE_UDP) &&
3444 !(val & (RCR_ENTRY_NOPORT |
3445 RCR_ENTRY_ERROR)))
3446 skb->ip_summed = CHECKSUM_UNNECESSARY;
3447 else
3448 skb_checksum_none_assert(skb);
3449 } else if (!(val & RCR_ENTRY_MULTI))
3450 append_size = append_size - skb->len;
3451
3452 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3453 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3454 *link = (struct page *) page->mapping;
3455 np->ops->unmap_page(np->device, page->index,
3456 PAGE_SIZE, DMA_FROM_DEVICE);
3457 page->index = 0;
3458 page->mapping = NULL;
3459 rp->rbr_refill_pending++;
3460 } else
3461 get_page(page);
3462
3463 index = NEXT_RCR(rp, index);
3464 if (!(val & RCR_ENTRY_MULTI))
3465 break;
3466
3467 }
3468 rp->rcr_index = index;
3469
3470 len += sizeof(*rh);
3471 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3472 __pskb_pull_tail(skb, len);
3473
3474 rh = (struct rx_pkt_hdr1 *) skb->data;
3475 if (np->dev->features & NETIF_F_RXHASH)
3476 skb_set_hash(skb,
3477 ((u32)rh->hashval2_0 << 24 |
3478 (u32)rh->hashval2_1 << 16 |
3479 (u32)rh->hashval1_1 << 8 |
3480 (u32)rh->hashval1_2 << 0),
3481 PKT_HASH_TYPE_L3);
3482 skb_pull(skb, sizeof(*rh));
3483
3484 rp->rx_packets++;
3485 rp->rx_bytes += skb->len;
3486
3487 skb->protocol = eth_type_trans(skb, np->dev);
3488 skb_record_rx_queue(skb, rp->rx_channel);
3489 napi_gro_receive(napi, skb);
3490
3491 return num_rcr;
3492 }
3493
3494 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3495 {
3496 int blocks_per_page = rp->rbr_blocks_per_page;
3497 int err, index = rp->rbr_index;
3498
3499 err = 0;
3500 while (index < (rp->rbr_table_size - blocks_per_page)) {
3501 err = niu_rbr_add_page(np, rp, mask, index);
3502 if (unlikely(err))
3503 break;
3504
3505 index += blocks_per_page;
3506 }
3507
3508 rp->rbr_index = index;
3509 return err;
3510 }
3511
3512 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3513 {
3514 int i;
3515
3516 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3517 struct page *page;
3518
3519 page = rp->rxhash[i];
3520 while (page) {
3521 struct page *next = (struct page *) page->mapping;
3522 u64 base = page->index;
3523
3524 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3525 DMA_FROM_DEVICE);
3526 page->index = 0;
3527 page->mapping = NULL;
3528
3529 __free_page(page);
3530
3531 page = next;
3532 }
3533 }
3534
3535 for (i = 0; i < rp->rbr_table_size; i++)
3536 rp->rbr[i] = cpu_to_le32(0);
3537 rp->rbr_index = 0;
3538 }
3539
3540 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3541 {
3542 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3543 struct sk_buff *skb = tb->skb;
3544 struct tx_pkt_hdr *tp;
3545 u64 tx_flags;
3546 int i, len;
3547
3548 tp = (struct tx_pkt_hdr *) skb->data;
3549 tx_flags = le64_to_cpup(&tp->flags);
3550
3551 rp->tx_packets++;
3552 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3553 ((tx_flags & TXHDR_PAD) / 2));
3554
3555 len = skb_headlen(skb);
3556 np->ops->unmap_single(np->device, tb->mapping,
3557 len, DMA_TO_DEVICE);
3558
3559 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3560 rp->mark_pending--;
3561
3562 tb->skb = NULL;
3563 do {
3564 idx = NEXT_TX(rp, idx);
3565 len -= MAX_TX_DESC_LEN;
3566 } while (len > 0);
3567
3568 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3569 tb = &rp->tx_buffs[idx];
3570 BUG_ON(tb->skb != NULL);
3571 np->ops->unmap_page(np->device, tb->mapping,
3572 skb_frag_size(&skb_shinfo(skb)->frags[i]),
3573 DMA_TO_DEVICE);
3574 idx = NEXT_TX(rp, idx);
3575 }
3576
3577 dev_kfree_skb(skb);
3578
3579 return idx;
3580 }
3581
3582 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3583
3584 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3585 {
3586 struct netdev_queue *txq;
3587 u16 pkt_cnt, tmp;
3588 int cons, index;
3589 u64 cs;
3590
3591 index = (rp - np->tx_rings);
3592 txq = netdev_get_tx_queue(np->dev, index);
3593
3594 cs = rp->tx_cs;
3595 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3596 goto out;
3597
3598 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3599 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3600 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3601
3602 rp->last_pkt_cnt = tmp;
3603
3604 cons = rp->cons;
3605
3606 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3607 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3608
3609 while (pkt_cnt--)
3610 cons = release_tx_packet(np, rp, cons);
3611
3612 rp->cons = cons;
3613 smp_mb();
3614
3615 out:
3616 if (unlikely(netif_tx_queue_stopped(txq) &&
3617 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3618 __netif_tx_lock(txq, smp_processor_id());
3619 if (netif_tx_queue_stopped(txq) &&
3620 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3621 netif_tx_wake_queue(txq);
3622 __netif_tx_unlock(txq);
3623 }
3624 }
3625
3626 static inline void niu_sync_rx_discard_stats(struct niu *np,
3627 struct rx_ring_info *rp,
3628 const int limit)
3629 {
3630 /* This elaborate scheme is needed for reading the RX discard
3631 * counters, as they are only 16-bit and can overflow quickly,
3632 * and because the overflow indication bit is not usable as
3633 * the counter value does not wrap, but remains at max value
3634 * 0xFFFF.
3635 *
3636 * In theory and in practice counters can be lost in between
3637 * reading nr64() and clearing the counter nw64(). For this
3638 * reason, the number of counter clearings nw64() is
3639 * limited/reduced though the limit parameter.
3640 */
3641 int rx_channel = rp->rx_channel;
3642 u32 misc, wred;
3643
3644 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3645 * following discard events: IPP (Input Port Process),
3646 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3647 * Block Ring) prefetch buffer is empty.
3648 */
3649 misc = nr64(RXMISC(rx_channel));
3650 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3651 nw64(RXMISC(rx_channel), 0);
3652 rp->rx_errors += misc & RXMISC_COUNT;
3653
3654 if (unlikely(misc & RXMISC_OFLOW))
3655 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3656 rx_channel);
3657
3658 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3659 "rx-%d: MISC drop=%u over=%u\n",
3660 rx_channel, misc, misc-limit);
3661 }
3662
3663 /* WRED (Weighted Random Early Discard) by hardware */
3664 wred = nr64(RED_DIS_CNT(rx_channel));
3665 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3666 nw64(RED_DIS_CNT(rx_channel), 0);
3667 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3668
3669 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3670 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3671
3672 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3673 "rx-%d: WRED drop=%u over=%u\n",
3674 rx_channel, wred, wred-limit);
3675 }
3676 }
3677
3678 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3679 struct rx_ring_info *rp, int budget)
3680 {
3681 int qlen, rcr_done = 0, work_done = 0;
3682 struct rxdma_mailbox *mbox = rp->mbox;
3683 u64 stat;
3684
3685 #if 1
3686 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3687 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3688 #else
3689 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3690 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3691 #endif
3692 mbox->rx_dma_ctl_stat = 0;
3693 mbox->rcrstat_a = 0;
3694
3695 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3696 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3697 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3698
3699 rcr_done = work_done = 0;
3700 qlen = min(qlen, budget);
3701 while (work_done < qlen) {
3702 rcr_done += niu_process_rx_pkt(napi, np, rp);
3703 work_done++;
3704 }
3705
3706 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3707 unsigned int i;
3708
3709 for (i = 0; i < rp->rbr_refill_pending; i++)
3710 niu_rbr_refill(np, rp, GFP_ATOMIC);
3711 rp->rbr_refill_pending = 0;
3712 }
3713
3714 stat = (RX_DMA_CTL_STAT_MEX |
3715 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3716 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3717
3718 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3719
3720 /* Only sync discards stats when qlen indicate potential for drops */
3721 if (qlen > 10)
3722 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3723
3724 return work_done;
3725 }
3726
3727 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3728 {
3729 u64 v0 = lp->v0;
3730 u32 tx_vec = (v0 >> 32);
3731 u32 rx_vec = (v0 & 0xffffffff);
3732 int i, work_done = 0;
3733
3734 netif_printk(np, intr, KERN_DEBUG, np->dev,
3735 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3736
3737 for (i = 0; i < np->num_tx_rings; i++) {
3738 struct tx_ring_info *rp = &np->tx_rings[i];
3739 if (tx_vec & (1 << rp->tx_channel))
3740 niu_tx_work(np, rp);
3741 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3742 }
3743
3744 for (i = 0; i < np->num_rx_rings; i++) {
3745 struct rx_ring_info *rp = &np->rx_rings[i];
3746
3747 if (rx_vec & (1 << rp->rx_channel)) {
3748 int this_work_done;
3749
3750 this_work_done = niu_rx_work(&lp->napi, np, rp,
3751 budget);
3752
3753 budget -= this_work_done;
3754 work_done += this_work_done;
3755 }
3756 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3757 }
3758
3759 return work_done;
3760 }
3761
3762 static int niu_poll(struct napi_struct *napi, int budget)
3763 {
3764 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3765 struct niu *np = lp->np;
3766 int work_done;
3767
3768 work_done = niu_poll_core(np, lp, budget);
3769
3770 if (work_done < budget) {
3771 napi_complete_done(napi, work_done);
3772 niu_ldg_rearm(np, lp, 1);
3773 }
3774 return work_done;
3775 }
3776
3777 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3778 u64 stat)
3779 {
3780 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3781
3782 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3783 pr_cont("RBR_TMOUT ");
3784 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3785 pr_cont("RSP_CNT ");
3786 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3787 pr_cont("BYTE_EN_BUS ");
3788 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3789 pr_cont("RSP_DAT ");
3790 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3791 pr_cont("RCR_ACK ");
3792 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3793 pr_cont("RCR_SHA_PAR ");
3794 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3795 pr_cont("RBR_PRE_PAR ");
3796 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3797 pr_cont("CONFIG ");
3798 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3799 pr_cont("RCRINCON ");
3800 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3801 pr_cont("RCRFULL ");
3802 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3803 pr_cont("RBRFULL ");
3804 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3805 pr_cont("RBRLOGPAGE ");
3806 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3807 pr_cont("CFIGLOGPAGE ");
3808 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3809 pr_cont("DC_FIDO ");
3810
3811 pr_cont(")\n");
3812 }
3813
3814 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3815 {
3816 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3817 int err = 0;
3818
3819
3820 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3821 RX_DMA_CTL_STAT_PORT_FATAL))
3822 err = -EINVAL;
3823
3824 if (err) {
3825 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3826 rp->rx_channel,
3827 (unsigned long long) stat);
3828
3829 niu_log_rxchan_errors(np, rp, stat);
3830 }
3831
3832 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3833 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3834
3835 return err;
3836 }
3837
3838 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3839 u64 cs)
3840 {
3841 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3842
3843 if (cs & TX_CS_MBOX_ERR)
3844 pr_cont("MBOX ");
3845 if (cs & TX_CS_PKT_SIZE_ERR)
3846 pr_cont("PKT_SIZE ");
3847 if (cs & TX_CS_TX_RING_OFLOW)
3848 pr_cont("TX_RING_OFLOW ");
3849 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3850 pr_cont("PREF_BUF_PAR ");
3851 if (cs & TX_CS_NACK_PREF)
3852 pr_cont("NACK_PREF ");
3853 if (cs & TX_CS_NACK_PKT_RD)
3854 pr_cont("NACK_PKT_RD ");
3855 if (cs & TX_CS_CONF_PART_ERR)
3856 pr_cont("CONF_PART ");
3857 if (cs & TX_CS_PKT_PRT_ERR)
3858 pr_cont("PKT_PTR ");
3859
3860 pr_cont(")\n");
3861 }
3862
3863 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3864 {
3865 u64 cs, logh, logl;
3866
3867 cs = nr64(TX_CS(rp->tx_channel));
3868 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3869 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3870
3871 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3872 rp->tx_channel,
3873 (unsigned long long)cs,
3874 (unsigned long long)logh,
3875 (unsigned long long)logl);
3876
3877 niu_log_txchan_errors(np, rp, cs);
3878
3879 return -ENODEV;
3880 }
3881
3882 static int niu_mif_interrupt(struct niu *np)
3883 {
3884 u64 mif_status = nr64(MIF_STATUS);
3885 int phy_mdint = 0;
3886
3887 if (np->flags & NIU_FLAGS_XMAC) {
3888 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3889
3890 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3891 phy_mdint = 1;
3892 }
3893
3894 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3895 (unsigned long long)mif_status, phy_mdint);
3896
3897 return -ENODEV;
3898 }
3899
3900 static void niu_xmac_interrupt(struct niu *np)
3901 {
3902 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3903 u64 val;
3904
3905 val = nr64_mac(XTXMAC_STATUS);
3906 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3907 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3908 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3909 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3910 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3911 mp->tx_fifo_errors++;
3912 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3913 mp->tx_overflow_errors++;
3914 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3915 mp->tx_max_pkt_size_errors++;
3916 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3917 mp->tx_underflow_errors++;
3918
3919 val = nr64_mac(XRXMAC_STATUS);
3920 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3921 mp->rx_local_faults++;
3922 if (val & XRXMAC_STATUS_RFLT_DET)
3923 mp->rx_remote_faults++;
3924 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3925 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3926 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3927 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3928 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3929 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3930 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3931 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3932 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3933 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3934 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3935 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3936 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3937 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3938 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3939 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3940 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3941 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3942 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3943 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3944 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3945 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3946 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3947 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3948 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3949 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3950 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3951 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3952 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3953 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3954 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3955 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3956 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3957 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3958 if (val & XRXMAC_STATUS_RXUFLOW)
3959 mp->rx_underflows++;
3960 if (val & XRXMAC_STATUS_RXOFLOW)
3961 mp->rx_overflows++;
3962
3963 val = nr64_mac(XMAC_FC_STAT);
3964 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3965 mp->pause_off_state++;
3966 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3967 mp->pause_on_state++;
3968 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3969 mp->pause_received++;
3970 }
3971
3972 static void niu_bmac_interrupt(struct niu *np)
3973 {
3974 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3975 u64 val;
3976
3977 val = nr64_mac(BTXMAC_STATUS);
3978 if (val & BTXMAC_STATUS_UNDERRUN)
3979 mp->tx_underflow_errors++;
3980 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3981 mp->tx_max_pkt_size_errors++;
3982 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
3983 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
3984 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
3985 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
3986
3987 val = nr64_mac(BRXMAC_STATUS);
3988 if (val & BRXMAC_STATUS_OVERFLOW)
3989 mp->rx_overflows++;
3990 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
3991 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
3992 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
3993 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3994 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
3995 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3996 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
3997 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
3998
3999 val = nr64_mac(BMAC_CTRL_STATUS);
4000 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4001 mp->pause_off_state++;
4002 if (val & BMAC_CTRL_STATUS_PAUSE)
4003 mp->pause_on_state++;
4004 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4005 mp->pause_received++;
4006 }
4007
4008 static int niu_mac_interrupt(struct niu *np)
4009 {
4010 if (np->flags & NIU_FLAGS_XMAC)
4011 niu_xmac_interrupt(np);
4012 else
4013 niu_bmac_interrupt(np);
4014
4015 return 0;
4016 }
4017
4018 static void niu_log_device_error(struct niu *np, u64 stat)
4019 {
4020 netdev_err(np->dev, "Core device errors ( ");
4021
4022 if (stat & SYS_ERR_MASK_META2)
4023 pr_cont("META2 ");
4024 if (stat & SYS_ERR_MASK_META1)
4025 pr_cont("META1 ");
4026 if (stat & SYS_ERR_MASK_PEU)
4027 pr_cont("PEU ");
4028 if (stat & SYS_ERR_MASK_TXC)
4029 pr_cont("TXC ");
4030 if (stat & SYS_ERR_MASK_RDMC)
4031 pr_cont("RDMC ");
4032 if (stat & SYS_ERR_MASK_TDMC)
4033 pr_cont("TDMC ");
4034 if (stat & SYS_ERR_MASK_ZCP)
4035 pr_cont("ZCP ");
4036 if (stat & SYS_ERR_MASK_FFLP)
4037 pr_cont("FFLP ");
4038 if (stat & SYS_ERR_MASK_IPP)
4039 pr_cont("IPP ");
4040 if (stat & SYS_ERR_MASK_MAC)
4041 pr_cont("MAC ");
4042 if (stat & SYS_ERR_MASK_SMX)
4043 pr_cont("SMX ");
4044
4045 pr_cont(")\n");
4046 }
4047
4048 static int niu_device_error(struct niu *np)
4049 {
4050 u64 stat = nr64(SYS_ERR_STAT);
4051
4052 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4053 (unsigned long long)stat);
4054
4055 niu_log_device_error(np, stat);
4056
4057 return -ENODEV;
4058 }
4059
4060 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4061 u64 v0, u64 v1, u64 v2)
4062 {
4063
4064 int i, err = 0;
4065
4066 lp->v0 = v0;
4067 lp->v1 = v1;
4068 lp->v2 = v2;
4069
4070 if (v1 & 0x00000000ffffffffULL) {
4071 u32 rx_vec = (v1 & 0xffffffff);
4072
4073 for (i = 0; i < np->num_rx_rings; i++) {
4074 struct rx_ring_info *rp = &np->rx_rings[i];
4075
4076 if (rx_vec & (1 << rp->rx_channel)) {
4077 int r = niu_rx_error(np, rp);
4078 if (r) {
4079 err = r;
4080 } else {
4081 if (!v0)
4082 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4083 RX_DMA_CTL_STAT_MEX);
4084 }
4085 }
4086 }
4087 }
4088 if (v1 & 0x7fffffff00000000ULL) {
4089 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4090
4091 for (i = 0; i < np->num_tx_rings; i++) {
4092 struct tx_ring_info *rp = &np->tx_rings[i];
4093
4094 if (tx_vec & (1 << rp->tx_channel)) {
4095 int r = niu_tx_error(np, rp);
4096 if (r)
4097 err = r;
4098 }
4099 }
4100 }
4101 if ((v0 | v1) & 0x8000000000000000ULL) {
4102 int r = niu_mif_interrupt(np);
4103 if (r)
4104 err = r;
4105 }
4106 if (v2) {
4107 if (v2 & 0x01ef) {
4108 int r = niu_mac_interrupt(np);
4109 if (r)
4110 err = r;
4111 }
4112 if (v2 & 0x0210) {
4113 int r = niu_device_error(np);
4114 if (r)
4115 err = r;
4116 }
4117 }
4118
4119 if (err)
4120 niu_enable_interrupts(np, 0);
4121
4122 return err;
4123 }
4124
4125 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4126 int ldn)
4127 {
4128 struct rxdma_mailbox *mbox = rp->mbox;
4129 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4130
4131 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4132 RX_DMA_CTL_STAT_RCRTO);
4133 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4134
4135 netif_printk(np, intr, KERN_DEBUG, np->dev,
4136 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4137 }
4138
4139 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4140 int ldn)
4141 {
4142 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4143
4144 netif_printk(np, intr, KERN_DEBUG, np->dev,
4145 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4146 }
4147
4148 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4149 {
4150 struct niu_parent *parent = np->parent;
4151 u32 rx_vec, tx_vec;
4152 int i;
4153
4154 tx_vec = (v0 >> 32);
4155 rx_vec = (v0 & 0xffffffff);
4156
4157 for (i = 0; i < np->num_rx_rings; i++) {
4158 struct rx_ring_info *rp = &np->rx_rings[i];
4159 int ldn = LDN_RXDMA(rp->rx_channel);
4160
4161 if (parent->ldg_map[ldn] != ldg)
4162 continue;
4163
4164 nw64(LD_IM0(ldn), LD_IM0_MASK);
4165 if (rx_vec & (1 << rp->rx_channel))
4166 niu_rxchan_intr(np, rp, ldn);
4167 }
4168
4169 for (i = 0; i < np->num_tx_rings; i++) {
4170 struct tx_ring_info *rp = &np->tx_rings[i];
4171 int ldn = LDN_TXDMA(rp->tx_channel);
4172
4173 if (parent->ldg_map[ldn] != ldg)
4174 continue;
4175
4176 nw64(LD_IM0(ldn), LD_IM0_MASK);
4177 if (tx_vec & (1 << rp->tx_channel))
4178 niu_txchan_intr(np, rp, ldn);
4179 }
4180 }
4181
4182 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4183 u64 v0, u64 v1, u64 v2)
4184 {
4185 if (likely(napi_schedule_prep(&lp->napi))) {
4186 lp->v0 = v0;
4187 lp->v1 = v1;
4188 lp->v2 = v2;
4189 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4190 __napi_schedule(&lp->napi);
4191 }
4192 }
4193
4194 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4195 {
4196 struct niu_ldg *lp = dev_id;
4197 struct niu *np = lp->np;
4198 int ldg = lp->ldg_num;
4199 unsigned long flags;
4200 u64 v0, v1, v2;
4201
4202 if (netif_msg_intr(np))
4203 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4204 __func__, lp, ldg);
4205
4206 spin_lock_irqsave(&np->lock, flags);
4207
4208 v0 = nr64(LDSV0(ldg));
4209 v1 = nr64(LDSV1(ldg));
4210 v2 = nr64(LDSV2(ldg));
4211
4212 if (netif_msg_intr(np))
4213 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4214 (unsigned long long) v0,
4215 (unsigned long long) v1,
4216 (unsigned long long) v2);
4217
4218 if (unlikely(!v0 && !v1 && !v2)) {
4219 spin_unlock_irqrestore(&np->lock, flags);
4220 return IRQ_NONE;
4221 }
4222
4223 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4224 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4225 if (err)
4226 goto out;
4227 }
4228 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4229 niu_schedule_napi(np, lp, v0, v1, v2);
4230 else
4231 niu_ldg_rearm(np, lp, 1);
4232 out:
4233 spin_unlock_irqrestore(&np->lock, flags);
4234
4235 return IRQ_HANDLED;
4236 }
4237
4238 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4239 {
4240 if (rp->mbox) {
4241 np->ops->free_coherent(np->device,
4242 sizeof(struct rxdma_mailbox),
4243 rp->mbox, rp->mbox_dma);
4244 rp->mbox = NULL;
4245 }
4246 if (rp->rcr) {
4247 np->ops->free_coherent(np->device,
4248 MAX_RCR_RING_SIZE * sizeof(__le64),
4249 rp->rcr, rp->rcr_dma);
4250 rp->rcr = NULL;
4251 rp->rcr_table_size = 0;
4252 rp->rcr_index = 0;
4253 }
4254 if (rp->rbr) {
4255 niu_rbr_free(np, rp);
4256
4257 np->ops->free_coherent(np->device,
4258 MAX_RBR_RING_SIZE * sizeof(__le32),
4259 rp->rbr, rp->rbr_dma);
4260 rp->rbr = NULL;
4261 rp->rbr_table_size = 0;
4262 rp->rbr_index = 0;
4263 }
4264 kfree(rp->rxhash);
4265 rp->rxhash = NULL;
4266 }
4267
4268 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4269 {
4270 if (rp->mbox) {
4271 np->ops->free_coherent(np->device,
4272 sizeof(struct txdma_mailbox),
4273 rp->mbox, rp->mbox_dma);
4274 rp->mbox = NULL;
4275 }
4276 if (rp->descr) {
4277 int i;
4278
4279 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4280 if (rp->tx_buffs[i].skb)
4281 (void) release_tx_packet(np, rp, i);
4282 }
4283
4284 np->ops->free_coherent(np->device,
4285 MAX_TX_RING_SIZE * sizeof(__le64),
4286 rp->descr, rp->descr_dma);
4287 rp->descr = NULL;
4288 rp->pending = 0;
4289 rp->prod = 0;
4290 rp->cons = 0;
4291 rp->wrap_bit = 0;
4292 }
4293 }
4294
4295 static void niu_free_channels(struct niu *np)
4296 {
4297 int i;
4298
4299 if (np->rx_rings) {
4300 for (i = 0; i < np->num_rx_rings; i++) {
4301 struct rx_ring_info *rp = &np->rx_rings[i];
4302
4303 niu_free_rx_ring_info(np, rp);
4304 }
4305 kfree(np->rx_rings);
4306 np->rx_rings = NULL;
4307 np->num_rx_rings = 0;
4308 }
4309
4310 if (np->tx_rings) {
4311 for (i = 0; i < np->num_tx_rings; i++) {
4312 struct tx_ring_info *rp = &np->tx_rings[i];
4313
4314 niu_free_tx_ring_info(np, rp);
4315 }
4316 kfree(np->tx_rings);
4317 np->tx_rings = NULL;
4318 np->num_tx_rings = 0;
4319 }
4320 }
4321
4322 static int niu_alloc_rx_ring_info(struct niu *np,
4323 struct rx_ring_info *rp)
4324 {
4325 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4326
4327 rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
4328 GFP_KERNEL);
4329 if (!rp->rxhash)
4330 return -ENOMEM;
4331
4332 rp->mbox = np->ops->alloc_coherent(np->device,
4333 sizeof(struct rxdma_mailbox),
4334 &rp->mbox_dma, GFP_KERNEL);
4335 if (!rp->mbox)
4336 return -ENOMEM;
4337 if ((unsigned long)rp->mbox & (64UL - 1)) {
4338 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4339 rp->mbox);
4340 return -EINVAL;
4341 }
4342
4343 rp->rcr = np->ops->alloc_coherent(np->device,
4344 MAX_RCR_RING_SIZE * sizeof(__le64),
4345 &rp->rcr_dma, GFP_KERNEL);
4346 if (!rp->rcr)
4347 return -ENOMEM;
4348 if ((unsigned long)rp->rcr & (64UL - 1)) {
4349 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4350 rp->rcr);
4351 return -EINVAL;
4352 }
4353 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4354 rp->rcr_index = 0;
4355
4356 rp->rbr = np->ops->alloc_coherent(np->device,
4357 MAX_RBR_RING_SIZE * sizeof(__le32),
4358 &rp->rbr_dma, GFP_KERNEL);
4359 if (!rp->rbr)
4360 return -ENOMEM;
4361 if ((unsigned long)rp->rbr & (64UL - 1)) {
4362 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4363 rp->rbr);
4364 return -EINVAL;
4365 }
4366 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4367 rp->rbr_index = 0;
4368 rp->rbr_pending = 0;
4369
4370 return 0;
4371 }
4372
4373 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4374 {
4375 int mtu = np->dev->mtu;
4376
4377 /* These values are recommended by the HW designers for fair
4378 * utilization of DRR amongst the rings.
4379 */
4380 rp->max_burst = mtu + 32;
4381 if (rp->max_burst > 4096)
4382 rp->max_burst = 4096;
4383 }
4384
4385 static int niu_alloc_tx_ring_info(struct niu *np,
4386 struct tx_ring_info *rp)
4387 {
4388 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4389
4390 rp->mbox = np->ops->alloc_coherent(np->device,
4391 sizeof(struct txdma_mailbox),
4392 &rp->mbox_dma, GFP_KERNEL);
4393 if (!rp->mbox)
4394 return -ENOMEM;
4395 if ((unsigned long)rp->mbox & (64UL - 1)) {
4396 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4397 rp->mbox);
4398 return -EINVAL;
4399 }
4400
4401 rp->descr = np->ops->alloc_coherent(np->device,
4402 MAX_TX_RING_SIZE * sizeof(__le64),
4403 &rp->descr_dma, GFP_KERNEL);
4404 if (!rp->descr)
4405 return -ENOMEM;
4406 if ((unsigned long)rp->descr & (64UL - 1)) {
4407 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4408 rp->descr);
4409 return -EINVAL;
4410 }
4411
4412 rp->pending = MAX_TX_RING_SIZE;
4413 rp->prod = 0;
4414 rp->cons = 0;
4415 rp->wrap_bit = 0;
4416
4417 /* XXX make these configurable... XXX */
4418 rp->mark_freq = rp->pending / 4;
4419
4420 niu_set_max_burst(np, rp);
4421
4422 return 0;
4423 }
4424
4425 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4426 {
4427 u16 bss;
4428
4429 bss = min(PAGE_SHIFT, 15);
4430
4431 rp->rbr_block_size = 1 << bss;
4432 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4433
4434 rp->rbr_sizes[0] = 256;
4435 rp->rbr_sizes[1] = 1024;
4436 if (np->dev->mtu > ETH_DATA_LEN) {
4437 switch (PAGE_SIZE) {
4438 case 4 * 1024:
4439 rp->rbr_sizes[2] = 4096;
4440 break;
4441
4442 default:
4443 rp->rbr_sizes[2] = 8192;
4444 break;
4445 }
4446 } else {
4447 rp->rbr_sizes[2] = 2048;
4448 }
4449 rp->rbr_sizes[3] = rp->rbr_block_size;
4450 }
4451
4452 static int niu_alloc_channels(struct niu *np)
4453 {
4454 struct niu_parent *parent = np->parent;
4455 int first_rx_channel, first_tx_channel;
4456 int num_rx_rings, num_tx_rings;
4457 struct rx_ring_info *rx_rings;
4458 struct tx_ring_info *tx_rings;
4459 int i, port, err;
4460
4461 port = np->port;
4462 first_rx_channel = first_tx_channel = 0;
4463 for (i = 0; i < port; i++) {
4464 first_rx_channel += parent->rxchan_per_port[i];
4465 first_tx_channel += parent->txchan_per_port[i];
4466 }
4467
4468 num_rx_rings = parent->rxchan_per_port[port];
4469 num_tx_rings = parent->txchan_per_port[port];
4470
4471 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4472 GFP_KERNEL);
4473 err = -ENOMEM;
4474 if (!rx_rings)
4475 goto out_err;
4476
4477 np->num_rx_rings = num_rx_rings;
4478 smp_wmb();
4479 np->rx_rings = rx_rings;
4480
4481 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4482
4483 for (i = 0; i < np->num_rx_rings; i++) {
4484 struct rx_ring_info *rp = &np->rx_rings[i];
4485
4486 rp->np = np;
4487 rp->rx_channel = first_rx_channel + i;
4488
4489 err = niu_alloc_rx_ring_info(np, rp);
4490 if (err)
4491 goto out_err;
4492
4493 niu_size_rbr(np, rp);
4494
4495 /* XXX better defaults, configurable, etc... XXX */
4496 rp->nonsyn_window = 64;
4497 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4498 rp->syn_window = 64;
4499 rp->syn_threshold = rp->rcr_table_size - 64;
4500 rp->rcr_pkt_threshold = 16;
4501 rp->rcr_timeout = 8;
4502 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4503 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4504 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4505
4506 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4507 if (err)
4508 return err;
4509 }
4510
4511 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4512 GFP_KERNEL);
4513 err = -ENOMEM;
4514 if (!tx_rings)
4515 goto out_err;
4516
4517 np->num_tx_rings = num_tx_rings;
4518 smp_wmb();
4519 np->tx_rings = tx_rings;
4520
4521 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4522
4523 for (i = 0; i < np->num_tx_rings; i++) {
4524 struct tx_ring_info *rp = &np->tx_rings[i];
4525
4526 rp->np = np;
4527 rp->tx_channel = first_tx_channel + i;
4528
4529 err = niu_alloc_tx_ring_info(np, rp);
4530 if (err)
4531 goto out_err;
4532 }
4533
4534 return 0;
4535
4536 out_err:
4537 niu_free_channels(np);
4538 return err;
4539 }
4540
4541 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4542 {
4543 int limit = 1000;
4544
4545 while (--limit > 0) {
4546 u64 val = nr64(TX_CS(channel));
4547 if (val & TX_CS_SNG_STATE)
4548 return 0;
4549 }
4550 return -ENODEV;
4551 }
4552
4553 static int niu_tx_channel_stop(struct niu *np, int channel)
4554 {
4555 u64 val = nr64(TX_CS(channel));
4556
4557 val |= TX_CS_STOP_N_GO;
4558 nw64(TX_CS(channel), val);
4559
4560 return niu_tx_cs_sng_poll(np, channel);
4561 }
4562
4563 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4564 {
4565 int limit = 1000;
4566
4567 while (--limit > 0) {
4568 u64 val = nr64(TX_CS(channel));
4569 if (!(val & TX_CS_RST))
4570 return 0;
4571 }
4572 return -ENODEV;
4573 }
4574
4575 static int niu_tx_channel_reset(struct niu *np, int channel)
4576 {
4577 u64 val = nr64(TX_CS(channel));
4578 int err;
4579
4580 val |= TX_CS_RST;
4581 nw64(TX_CS(channel), val);
4582
4583 err = niu_tx_cs_reset_poll(np, channel);
4584 if (!err)
4585 nw64(TX_RING_KICK(channel), 0);
4586
4587 return err;
4588 }
4589
4590 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4591 {
4592 u64 val;
4593
4594 nw64(TX_LOG_MASK1(channel), 0);
4595 nw64(TX_LOG_VAL1(channel), 0);
4596 nw64(TX_LOG_MASK2(channel), 0);
4597 nw64(TX_LOG_VAL2(channel), 0);
4598 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4599 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4600 nw64(TX_LOG_PAGE_HDL(channel), 0);
4601
4602 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4603 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4604 nw64(TX_LOG_PAGE_VLD(channel), val);
4605
4606 /* XXX TXDMA 32bit mode? XXX */
4607
4608 return 0;
4609 }
4610
4611 static void niu_txc_enable_port(struct niu *np, int on)
4612 {
4613 unsigned long flags;
4614 u64 val, mask;
4615
4616 niu_lock_parent(np, flags);
4617 val = nr64(TXC_CONTROL);
4618 mask = (u64)1 << np->port;
4619 if (on) {
4620 val |= TXC_CONTROL_ENABLE | mask;
4621 } else {
4622 val &= ~mask;
4623 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4624 val &= ~TXC_CONTROL_ENABLE;
4625 }
4626 nw64(TXC_CONTROL, val);
4627 niu_unlock_parent(np, flags);
4628 }
4629
4630 static void niu_txc_set_imask(struct niu *np, u64 imask)
4631 {
4632 unsigned long flags;
4633 u64 val;
4634
4635 niu_lock_parent(np, flags);
4636 val = nr64(TXC_INT_MASK);
4637 val &= ~TXC_INT_MASK_VAL(np->port);
4638 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4639 niu_unlock_parent(np, flags);
4640 }
4641
4642 static void niu_txc_port_dma_enable(struct niu *np, int on)
4643 {
4644 u64 val = 0;
4645
4646 if (on) {
4647 int i;
4648
4649 for (i = 0; i < np->num_tx_rings; i++)
4650 val |= (1 << np->tx_rings[i].tx_channel);
4651 }
4652 nw64(TXC_PORT_DMA(np->port), val);
4653 }
4654
4655 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4656 {
4657 int err, channel = rp->tx_channel;
4658 u64 val, ring_len;
4659
4660 err = niu_tx_channel_stop(np, channel);
4661 if (err)
4662 return err;
4663
4664 err = niu_tx_channel_reset(np, channel);
4665 if (err)
4666 return err;
4667
4668 err = niu_tx_channel_lpage_init(np, channel);
4669 if (err)
4670 return err;
4671
4672 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4673 nw64(TX_ENT_MSK(channel), 0);
4674
4675 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4676 TX_RNG_CFIG_STADDR)) {
4677 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4678 channel, (unsigned long long)rp->descr_dma);
4679 return -EINVAL;
4680 }
4681
4682 /* The length field in TX_RNG_CFIG is measured in 64-byte
4683 * blocks. rp->pending is the number of TX descriptors in
4684 * our ring, 8 bytes each, thus we divide by 8 bytes more
4685 * to get the proper value the chip wants.
4686 */
4687 ring_len = (rp->pending / 8);
4688
4689 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4690 rp->descr_dma);
4691 nw64(TX_RNG_CFIG(channel), val);
4692
4693 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4694 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4695 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4696 channel, (unsigned long long)rp->mbox_dma);
4697 return -EINVAL;
4698 }
4699 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4700 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4701
4702 nw64(TX_CS(channel), 0);
4703
4704 rp->last_pkt_cnt = 0;
4705
4706 return 0;
4707 }
4708
4709 static void niu_init_rdc_groups(struct niu *np)
4710 {
4711 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4712 int i, first_table_num = tp->first_table_num;
4713
4714 for (i = 0; i < tp->num_tables; i++) {
4715 struct rdc_table *tbl = &tp->tables[i];
4716 int this_table = first_table_num + i;
4717 int slot;
4718
4719 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4720 nw64(RDC_TBL(this_table, slot),
4721 tbl->rxdma_channel[slot]);
4722 }
4723
4724 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4725 }
4726
4727 static void niu_init_drr_weight(struct niu *np)
4728 {
4729 int type = phy_decode(np->parent->port_phy, np->port);
4730 u64 val;
4731
4732 switch (type) {
4733 case PORT_TYPE_10G:
4734 val = PT_DRR_WEIGHT_DEFAULT_10G;
4735 break;
4736
4737 case PORT_TYPE_1G:
4738 default:
4739 val = PT_DRR_WEIGHT_DEFAULT_1G;
4740 break;
4741 }
4742 nw64(PT_DRR_WT(np->port), val);
4743 }
4744
4745 static int niu_init_hostinfo(struct niu *np)
4746 {
4747 struct niu_parent *parent = np->parent;
4748 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4749 int i, err, num_alt = niu_num_alt_addr(np);
4750 int first_rdc_table = tp->first_table_num;
4751
4752 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4753 if (err)
4754 return err;
4755
4756 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4757 if (err)
4758 return err;
4759
4760 for (i = 0; i < num_alt; i++) {
4761 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4762 if (err)
4763 return err;
4764 }
4765
4766 return 0;
4767 }
4768
4769 static int niu_rx_channel_reset(struct niu *np, int channel)
4770 {
4771 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4772 RXDMA_CFIG1_RST, 1000, 10,
4773 "RXDMA_CFIG1");
4774 }
4775
4776 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4777 {
4778 u64 val;
4779
4780 nw64(RX_LOG_MASK1(channel), 0);
4781 nw64(RX_LOG_VAL1(channel), 0);
4782 nw64(RX_LOG_MASK2(channel), 0);
4783 nw64(RX_LOG_VAL2(channel), 0);
4784 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4785 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4786 nw64(RX_LOG_PAGE_HDL(channel), 0);
4787
4788 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4789 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4790 nw64(RX_LOG_PAGE_VLD(channel), val);
4791
4792 return 0;
4793 }
4794
4795 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4796 {
4797 u64 val;
4798
4799 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4800 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4801 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4802 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4803 nw64(RDC_RED_PARA(rp->rx_channel), val);
4804 }
4805
4806 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4807 {
4808 u64 val = 0;
4809
4810 *ret = 0;
4811 switch (rp->rbr_block_size) {
4812 case 4 * 1024:
4813 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4814 break;
4815 case 8 * 1024:
4816 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4817 break;
4818 case 16 * 1024:
4819 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4820 break;
4821 case 32 * 1024:
4822 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4823 break;
4824 default:
4825 return -EINVAL;
4826 }
4827 val |= RBR_CFIG_B_VLD2;
4828 switch (rp->rbr_sizes[2]) {
4829 case 2 * 1024:
4830 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4831 break;
4832 case 4 * 1024:
4833 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4834 break;
4835 case 8 * 1024:
4836 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4837 break;
4838 case 16 * 1024:
4839 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4840 break;
4841
4842 default:
4843 return -EINVAL;
4844 }
4845 val |= RBR_CFIG_B_VLD1;
4846 switch (rp->rbr_sizes[1]) {
4847 case 1 * 1024:
4848 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4849 break;
4850 case 2 * 1024:
4851 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4852 break;
4853 case 4 * 1024:
4854 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4855 break;
4856 case 8 * 1024:
4857 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4858 break;
4859
4860 default:
4861 return -EINVAL;
4862 }
4863 val |= RBR_CFIG_B_VLD0;
4864 switch (rp->rbr_sizes[0]) {
4865 case 256:
4866 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4867 break;
4868 case 512:
4869 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4870 break;
4871 case 1 * 1024:
4872 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4873 break;
4874 case 2 * 1024:
4875 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4876 break;
4877
4878 default:
4879 return -EINVAL;
4880 }
4881
4882 *ret = val;
4883 return 0;
4884 }
4885
4886 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4887 {
4888 u64 val = nr64(RXDMA_CFIG1(channel));
4889 int limit;
4890
4891 if (on)
4892 val |= RXDMA_CFIG1_EN;
4893 else
4894 val &= ~RXDMA_CFIG1_EN;
4895 nw64(RXDMA_CFIG1(channel), val);
4896
4897 limit = 1000;
4898 while (--limit > 0) {
4899 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4900 break;
4901 udelay(10);
4902 }
4903 if (limit <= 0)
4904 return -ENODEV;
4905 return 0;
4906 }
4907
4908 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4909 {
4910 int err, channel = rp->rx_channel;
4911 u64 val;
4912
4913 err = niu_rx_channel_reset(np, channel);
4914 if (err)
4915 return err;
4916
4917 err = niu_rx_channel_lpage_init(np, channel);
4918 if (err)
4919 return err;
4920
4921 niu_rx_channel_wred_init(np, rp);
4922
4923 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4924 nw64(RX_DMA_CTL_STAT(channel),
4925 (RX_DMA_CTL_STAT_MEX |
4926 RX_DMA_CTL_STAT_RCRTHRES |
4927 RX_DMA_CTL_STAT_RCRTO |
4928 RX_DMA_CTL_STAT_RBR_EMPTY));
4929 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4930 nw64(RXDMA_CFIG2(channel),
4931 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4932 RXDMA_CFIG2_FULL_HDR));
4933 nw64(RBR_CFIG_A(channel),
4934 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4935 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4936 err = niu_compute_rbr_cfig_b(rp, &val);
4937 if (err)
4938 return err;
4939 nw64(RBR_CFIG_B(channel), val);
4940 nw64(RCRCFIG_A(channel),
4941 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4942 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4943 nw64(RCRCFIG_B(channel),
4944 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4945 RCRCFIG_B_ENTOUT |
4946 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4947
4948 err = niu_enable_rx_channel(np, channel, 1);
4949 if (err)
4950 return err;
4951
4952 nw64(RBR_KICK(channel), rp->rbr_index);
4953
4954 val = nr64(RX_DMA_CTL_STAT(channel));
4955 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4956 nw64(RX_DMA_CTL_STAT(channel), val);
4957
4958 return 0;
4959 }
4960
4961 static int niu_init_rx_channels(struct niu *np)
4962 {
4963 unsigned long flags;
4964 u64 seed = jiffies_64;
4965 int err, i;
4966
4967 niu_lock_parent(np, flags);
4968 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4969 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4970 niu_unlock_parent(np, flags);
4971
4972 /* XXX RXDMA 32bit mode? XXX */
4973
4974 niu_init_rdc_groups(np);
4975 niu_init_drr_weight(np);
4976
4977 err = niu_init_hostinfo(np);
4978 if (err)
4979 return err;
4980
4981 for (i = 0; i < np->num_rx_rings; i++) {
4982 struct rx_ring_info *rp = &np->rx_rings[i];
4983
4984 err = niu_init_one_rx_channel(np, rp);
4985 if (err)
4986 return err;
4987 }
4988
4989 return 0;
4990 }
4991
4992 static int niu_set_ip_frag_rule(struct niu *np)
4993 {
4994 struct niu_parent *parent = np->parent;
4995 struct niu_classifier *cp = &np->clas;
4996 struct niu_tcam_entry *tp;
4997 int index, err;
4998
4999 index = cp->tcam_top;
5000 tp = &parent->tcam[index];
5001
5002 /* Note that the noport bit is the same in both ipv4 and
5003 * ipv6 format TCAM entries.
5004 */
5005 memset(tp, 0, sizeof(*tp));
5006 tp->key[1] = TCAM_V4KEY1_NOPORT;
5007 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5008 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5009 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5010 err = tcam_write(np, index, tp->key, tp->key_mask);
5011 if (err)
5012 return err;
5013 err = tcam_assoc_write(np, index, tp->assoc_data);
5014 if (err)
5015 return err;
5016 tp->valid = 1;
5017 cp->tcam_valid_entries++;
5018
5019 return 0;
5020 }
5021
5022 static int niu_init_classifier_hw(struct niu *np)
5023 {
5024 struct niu_parent *parent = np->parent;
5025 struct niu_classifier *cp = &np->clas;
5026 int i, err;
5027
5028 nw64(H1POLY, cp->h1_init);
5029 nw64(H2POLY, cp->h2_init);
5030
5031 err = niu_init_hostinfo(np);
5032 if (err)
5033 return err;
5034
5035 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5036 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5037
5038 vlan_tbl_write(np, i, np->port,
5039 vp->vlan_pref, vp->rdc_num);
5040 }
5041
5042 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5043 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5044
5045 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5046 ap->rdc_num, ap->mac_pref);
5047 if (err)
5048 return err;
5049 }
5050
5051 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5052 int index = i - CLASS_CODE_USER_PROG1;
5053
5054 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5055 if (err)
5056 return err;
5057 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5058 if (err)
5059 return err;
5060 }
5061
5062 err = niu_set_ip_frag_rule(np);
5063 if (err)
5064 return err;
5065
5066 tcam_enable(np, 1);
5067
5068 return 0;
5069 }
5070
5071 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5072 {
5073 nw64(ZCP_RAM_DATA0, data[0]);
5074 nw64(ZCP_RAM_DATA1, data[1]);
5075 nw64(ZCP_RAM_DATA2, data[2]);
5076 nw64(ZCP_RAM_DATA3, data[3]);
5077 nw64(ZCP_RAM_DATA4, data[4]);
5078 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5079 nw64(ZCP_RAM_ACC,
5080 (ZCP_RAM_ACC_WRITE |
5081 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5082 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5083
5084 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5085 1000, 100);
5086 }
5087
5088 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5089 {
5090 int err;
5091
5092 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5093 1000, 100);
5094 if (err) {
5095 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5096 (unsigned long long)nr64(ZCP_RAM_ACC));
5097 return err;
5098 }
5099
5100 nw64(ZCP_RAM_ACC,
5101 (ZCP_RAM_ACC_READ |
5102 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5103 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5104
5105 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5106 1000, 100);
5107 if (err) {
5108 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5109 (unsigned long long)nr64(ZCP_RAM_ACC));
5110 return err;
5111 }
5112
5113 data[0] = nr64(ZCP_RAM_DATA0);
5114 data[1] = nr64(ZCP_RAM_DATA1);
5115 data[2] = nr64(ZCP_RAM_DATA2);
5116 data[3] = nr64(ZCP_RAM_DATA3);
5117 data[4] = nr64(ZCP_RAM_DATA4);
5118
5119 return 0;
5120 }
5121
5122 static void niu_zcp_cfifo_reset(struct niu *np)
5123 {
5124 u64 val = nr64(RESET_CFIFO);
5125
5126 val |= RESET_CFIFO_RST(np->port);
5127 nw64(RESET_CFIFO, val);
5128 udelay(10);
5129
5130 val &= ~RESET_CFIFO_RST(np->port);
5131 nw64(RESET_CFIFO, val);
5132 }
5133
5134 static int niu_init_zcp(struct niu *np)
5135 {
5136 u64 data[5], rbuf[5];
5137 int i, max, err;
5138
5139 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5140 if (np->port == 0 || np->port == 1)
5141 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5142 else
5143 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5144 } else
5145 max = NIU_CFIFO_ENTRIES;
5146
5147 data[0] = 0;
5148 data[1] = 0;
5149 data[2] = 0;
5150 data[3] = 0;
5151 data[4] = 0;
5152
5153 for (i = 0; i < max; i++) {
5154 err = niu_zcp_write(np, i, data);
5155 if (err)
5156 return err;
5157 err = niu_zcp_read(np, i, rbuf);
5158 if (err)
5159 return err;
5160 }
5161
5162 niu_zcp_cfifo_reset(np);
5163 nw64(CFIFO_ECC(np->port), 0);
5164 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5165 (void) nr64(ZCP_INT_STAT);
5166 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5167
5168 return 0;
5169 }
5170
5171 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5172 {
5173 u64 val = nr64_ipp(IPP_CFIG);
5174
5175 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5176 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5177 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5178 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5179 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5180 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5181 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5182 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5183 }
5184
5185 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5186 {
5187 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5188 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5189 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5190 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5191 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5192 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5193 }
5194
5195 static int niu_ipp_reset(struct niu *np)
5196 {
5197 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5198 1000, 100, "IPP_CFIG");
5199 }
5200
5201 static int niu_init_ipp(struct niu *np)
5202 {
5203 u64 data[5], rbuf[5], val;
5204 int i, max, err;
5205
5206 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5207 if (np->port == 0 || np->port == 1)
5208 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5209 else
5210 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5211 } else
5212 max = NIU_DFIFO_ENTRIES;
5213
5214 data[0] = 0;
5215 data[1] = 0;
5216 data[2] = 0;
5217 data[3] = 0;
5218 data[4] = 0;
5219
5220 for (i = 0; i < max; i++) {
5221 niu_ipp_write(np, i, data);
5222 niu_ipp_read(np, i, rbuf);
5223 }
5224
5225 (void) nr64_ipp(IPP_INT_STAT);
5226 (void) nr64_ipp(IPP_INT_STAT);
5227
5228 err = niu_ipp_reset(np);
5229 if (err)
5230 return err;
5231
5232 (void) nr64_ipp(IPP_PKT_DIS);
5233 (void) nr64_ipp(IPP_BAD_CS_CNT);
5234 (void) nr64_ipp(IPP_ECC);
5235
5236 (void) nr64_ipp(IPP_INT_STAT);
5237
5238 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5239
5240 val = nr64_ipp(IPP_CFIG);
5241 val &= ~IPP_CFIG_IP_MAX_PKT;
5242 val |= (IPP_CFIG_IPP_ENABLE |
5243 IPP_CFIG_DFIFO_ECC_EN |
5244 IPP_CFIG_DROP_BAD_CRC |
5245 IPP_CFIG_CKSUM_EN |
5246 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5247 nw64_ipp(IPP_CFIG, val);
5248
5249 return 0;
5250 }
5251
5252 static void niu_handle_led(struct niu *np, int status)
5253 {
5254 u64 val;
5255 val = nr64_mac(XMAC_CONFIG);
5256
5257 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5258 (np->flags & NIU_FLAGS_FIBER) != 0) {
5259 if (status) {
5260 val |= XMAC_CONFIG_LED_POLARITY;
5261 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5262 } else {
5263 val |= XMAC_CONFIG_FORCE_LED_ON;
5264 val &= ~XMAC_CONFIG_LED_POLARITY;
5265 }
5266 }
5267
5268 nw64_mac(XMAC_CONFIG, val);
5269 }
5270
5271 static void niu_init_xif_xmac(struct niu *np)
5272 {
5273 struct niu_link_config *lp = &np->link_config;
5274 u64 val;
5275
5276 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5277 val = nr64(MIF_CONFIG);
5278 val |= MIF_CONFIG_ATCA_GE;
5279 nw64(MIF_CONFIG, val);
5280 }
5281
5282 val = nr64_mac(XMAC_CONFIG);
5283 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5284
5285 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5286
5287 if (lp->loopback_mode == LOOPBACK_MAC) {
5288 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5289 val |= XMAC_CONFIG_LOOPBACK;
5290 } else {
5291 val &= ~XMAC_CONFIG_LOOPBACK;
5292 }
5293
5294 if (np->flags & NIU_FLAGS_10G) {
5295 val &= ~XMAC_CONFIG_LFS_DISABLE;
5296 } else {
5297 val |= XMAC_CONFIG_LFS_DISABLE;
5298 if (!(np->flags & NIU_FLAGS_FIBER) &&
5299 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5300 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5301 else
5302 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5303 }
5304
5305 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5306
5307 if (lp->active_speed == SPEED_100)
5308 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5309 else
5310 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5311
5312 nw64_mac(XMAC_CONFIG, val);
5313
5314 val = nr64_mac(XMAC_CONFIG);
5315 val &= ~XMAC_CONFIG_MODE_MASK;
5316 if (np->flags & NIU_FLAGS_10G) {
5317 val |= XMAC_CONFIG_MODE_XGMII;
5318 } else {
5319 if (lp->active_speed == SPEED_1000)
5320 val |= XMAC_CONFIG_MODE_GMII;
5321 else
5322 val |= XMAC_CONFIG_MODE_MII;
5323 }
5324
5325 nw64_mac(XMAC_CONFIG, val);
5326 }
5327
5328 static void niu_init_xif_bmac(struct niu *np)
5329 {
5330 struct niu_link_config *lp = &np->link_config;
5331 u64 val;
5332
5333 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5334
5335 if (lp->loopback_mode == LOOPBACK_MAC)
5336 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5337 else
5338 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5339
5340 if (lp->active_speed == SPEED_1000)
5341 val |= BMAC_XIF_CONFIG_GMII_MODE;
5342 else
5343 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5344
5345 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5346 BMAC_XIF_CONFIG_LED_POLARITY);
5347
5348 if (!(np->flags & NIU_FLAGS_10G) &&
5349 !(np->flags & NIU_FLAGS_FIBER) &&
5350 lp->active_speed == SPEED_100)
5351 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5352 else
5353 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5354
5355 nw64_mac(BMAC_XIF_CONFIG, val);
5356 }
5357
5358 static void niu_init_xif(struct niu *np)
5359 {
5360 if (np->flags & NIU_FLAGS_XMAC)
5361 niu_init_xif_xmac(np);
5362 else
5363 niu_init_xif_bmac(np);
5364 }
5365
5366 static void niu_pcs_mii_reset(struct niu *np)
5367 {
5368 int limit = 1000;
5369 u64 val = nr64_pcs(PCS_MII_CTL);
5370 val |= PCS_MII_CTL_RST;
5371 nw64_pcs(PCS_MII_CTL, val);
5372 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5373 udelay(100);
5374 val = nr64_pcs(PCS_MII_CTL);
5375 }
5376 }
5377
5378 static void niu_xpcs_reset(struct niu *np)
5379 {
5380 int limit = 1000;
5381 u64 val = nr64_xpcs(XPCS_CONTROL1);
5382 val |= XPCS_CONTROL1_RESET;
5383 nw64_xpcs(XPCS_CONTROL1, val);
5384 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5385 udelay(100);
5386 val = nr64_xpcs(XPCS_CONTROL1);
5387 }
5388 }
5389
5390 static int niu_init_pcs(struct niu *np)
5391 {
5392 struct niu_link_config *lp = &np->link_config;
5393 u64 val;
5394
5395 switch (np->flags & (NIU_FLAGS_10G |
5396 NIU_FLAGS_FIBER |
5397 NIU_FLAGS_XCVR_SERDES)) {
5398 case NIU_FLAGS_FIBER:
5399 /* 1G fiber */
5400 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5401 nw64_pcs(PCS_DPATH_MODE, 0);
5402 niu_pcs_mii_reset(np);
5403 break;
5404
5405 case NIU_FLAGS_10G:
5406 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5407 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5408 /* 10G SERDES */
5409 if (!(np->flags & NIU_FLAGS_XMAC))
5410 return -EINVAL;
5411
5412 /* 10G copper or fiber */
5413 val = nr64_mac(XMAC_CONFIG);
5414 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5415 nw64_mac(XMAC_CONFIG, val);
5416
5417 niu_xpcs_reset(np);
5418
5419 val = nr64_xpcs(XPCS_CONTROL1);
5420 if (lp->loopback_mode == LOOPBACK_PHY)
5421 val |= XPCS_CONTROL1_LOOPBACK;
5422 else
5423 val &= ~XPCS_CONTROL1_LOOPBACK;
5424 nw64_xpcs(XPCS_CONTROL1, val);
5425
5426 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5427 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5428 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5429 break;
5430
5431
5432 case NIU_FLAGS_XCVR_SERDES:
5433 /* 1G SERDES */
5434 niu_pcs_mii_reset(np);
5435 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5436 nw64_pcs(PCS_DPATH_MODE, 0);
5437 break;
5438
5439 case 0:
5440 /* 1G copper */
5441 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5442 /* 1G RGMII FIBER */
5443 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5444 niu_pcs_mii_reset(np);
5445 break;
5446
5447 default:
5448 return -EINVAL;
5449 }
5450
5451 return 0;
5452 }
5453
5454 static int niu_reset_tx_xmac(struct niu *np)
5455 {
5456 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5457 (XTXMAC_SW_RST_REG_RS |
5458 XTXMAC_SW_RST_SOFT_RST),
5459 1000, 100, "XTXMAC_SW_RST");
5460 }
5461
5462 static int niu_reset_tx_bmac(struct niu *np)
5463 {
5464 int limit;
5465
5466 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5467 limit = 1000;
5468 while (--limit >= 0) {
5469 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5470 break;
5471 udelay(100);
5472 }
5473 if (limit < 0) {
5474 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5475 np->port,
5476 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5477 return -ENODEV;
5478 }
5479
5480 return 0;
5481 }
5482
5483 static int niu_reset_tx_mac(struct niu *np)
5484 {
5485 if (np->flags & NIU_FLAGS_XMAC)
5486 return niu_reset_tx_xmac(np);
5487 else
5488 return niu_reset_tx_bmac(np);
5489 }
5490
5491 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5492 {
5493 u64 val;
5494
5495 val = nr64_mac(XMAC_MIN);
5496 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5497 XMAC_MIN_RX_MIN_PKT_SIZE);
5498 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5499 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5500 nw64_mac(XMAC_MIN, val);
5501
5502 nw64_mac(XMAC_MAX, max);
5503
5504 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5505
5506 val = nr64_mac(XMAC_IPG);
5507 if (np->flags & NIU_FLAGS_10G) {
5508 val &= ~XMAC_IPG_IPG_XGMII;
5509 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5510 } else {
5511 val &= ~XMAC_IPG_IPG_MII_GMII;
5512 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5513 }
5514 nw64_mac(XMAC_IPG, val);
5515
5516 val = nr64_mac(XMAC_CONFIG);
5517 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5518 XMAC_CONFIG_STRETCH_MODE |
5519 XMAC_CONFIG_VAR_MIN_IPG_EN |
5520 XMAC_CONFIG_TX_ENABLE);
5521 nw64_mac(XMAC_CONFIG, val);
5522
5523 nw64_mac(TXMAC_FRM_CNT, 0);
5524 nw64_mac(TXMAC_BYTE_CNT, 0);
5525 }
5526
5527 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5528 {
5529 u64 val;
5530
5531 nw64_mac(BMAC_MIN_FRAME, min);
5532 nw64_mac(BMAC_MAX_FRAME, max);
5533
5534 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5535 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5536 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5537
5538 val = nr64_mac(BTXMAC_CONFIG);
5539 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5540 BTXMAC_CONFIG_ENABLE);
5541 nw64_mac(BTXMAC_CONFIG, val);
5542 }
5543
5544 static void niu_init_tx_mac(struct niu *np)
5545 {
5546 u64 min, max;
5547
5548 min = 64;
5549 if (np->dev->mtu > ETH_DATA_LEN)
5550 max = 9216;
5551 else
5552 max = 1522;
5553
5554 /* The XMAC_MIN register only accepts values for TX min which
5555 * have the low 3 bits cleared.
5556 */
5557 BUG_ON(min & 0x7);
5558
5559 if (np->flags & NIU_FLAGS_XMAC)
5560 niu_init_tx_xmac(np, min, max);
5561 else
5562 niu_init_tx_bmac(np, min, max);
5563 }
5564
5565 static int niu_reset_rx_xmac(struct niu *np)
5566 {
5567 int limit;
5568
5569 nw64_mac(XRXMAC_SW_RST,
5570 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5571 limit = 1000;
5572 while (--limit >= 0) {
5573 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5574 XRXMAC_SW_RST_SOFT_RST)))
5575 break;
5576 udelay(100);
5577 }
5578 if (limit < 0) {
5579 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5580 np->port,
5581 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5582 return -ENODEV;
5583 }
5584
5585 return 0;
5586 }
5587
5588 static int niu_reset_rx_bmac(struct niu *np)
5589 {
5590 int limit;
5591
5592 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5593 limit = 1000;
5594 while (--limit >= 0) {
5595 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5596 break;
5597 udelay(100);
5598 }
5599 if (limit < 0) {
5600 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5601 np->port,
5602 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5603 return -ENODEV;
5604 }
5605
5606 return 0;
5607 }
5608
5609 static int niu_reset_rx_mac(struct niu *np)
5610 {
5611 if (np->flags & NIU_FLAGS_XMAC)
5612 return niu_reset_rx_xmac(np);
5613 else
5614 return niu_reset_rx_bmac(np);
5615 }
5616
5617 static void niu_init_rx_xmac(struct niu *np)
5618 {
5619 struct niu_parent *parent = np->parent;
5620 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5621 int first_rdc_table = tp->first_table_num;
5622 unsigned long i;
5623 u64 val;
5624
5625 nw64_mac(XMAC_ADD_FILT0, 0);
5626 nw64_mac(XMAC_ADD_FILT1, 0);
5627 nw64_mac(XMAC_ADD_FILT2, 0);
5628 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5629 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5630 for (i = 0; i < MAC_NUM_HASH; i++)
5631 nw64_mac(XMAC_HASH_TBL(i), 0);
5632 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5633 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5634 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5635
5636 val = nr64_mac(XMAC_CONFIG);
5637 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5638 XMAC_CONFIG_PROMISCUOUS |
5639 XMAC_CONFIG_PROMISC_GROUP |
5640 XMAC_CONFIG_ERR_CHK_DIS |
5641 XMAC_CONFIG_RX_CRC_CHK_DIS |
5642 XMAC_CONFIG_RESERVED_MULTICAST |
5643 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5644 XMAC_CONFIG_ADDR_FILTER_EN |
5645 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5646 XMAC_CONFIG_STRIP_CRC |
5647 XMAC_CONFIG_PASS_FLOW_CTRL |
5648 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5649 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5650 nw64_mac(XMAC_CONFIG, val);
5651
5652 nw64_mac(RXMAC_BT_CNT, 0);
5653 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5654 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5655 nw64_mac(RXMAC_FRAG_CNT, 0);
5656 nw64_mac(RXMAC_HIST_CNT1, 0);
5657 nw64_mac(RXMAC_HIST_CNT2, 0);
5658 nw64_mac(RXMAC_HIST_CNT3, 0);
5659 nw64_mac(RXMAC_HIST_CNT4, 0);
5660 nw64_mac(RXMAC_HIST_CNT5, 0);
5661 nw64_mac(RXMAC_HIST_CNT6, 0);
5662 nw64_mac(RXMAC_HIST_CNT7, 0);
5663 nw64_mac(RXMAC_MPSZER_CNT, 0);
5664 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5665 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5666 nw64_mac(LINK_FAULT_CNT, 0);
5667 }
5668
5669 static void niu_init_rx_bmac(struct niu *np)
5670 {
5671 struct niu_parent *parent = np->parent;
5672 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5673 int first_rdc_table = tp->first_table_num;
5674 unsigned long i;
5675 u64 val;
5676
5677 nw64_mac(BMAC_ADD_FILT0, 0);
5678 nw64_mac(BMAC_ADD_FILT1, 0);
5679 nw64_mac(BMAC_ADD_FILT2, 0);
5680 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5681 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5682 for (i = 0; i < MAC_NUM_HASH; i++)
5683 nw64_mac(BMAC_HASH_TBL(i), 0);
5684 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5685 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5686 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5687
5688 val = nr64_mac(BRXMAC_CONFIG);
5689 val &= ~(BRXMAC_CONFIG_ENABLE |
5690 BRXMAC_CONFIG_STRIP_PAD |
5691 BRXMAC_CONFIG_STRIP_FCS |
5692 BRXMAC_CONFIG_PROMISC |
5693 BRXMAC_CONFIG_PROMISC_GRP |
5694 BRXMAC_CONFIG_ADDR_FILT_EN |
5695 BRXMAC_CONFIG_DISCARD_DIS);
5696 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5697 nw64_mac(BRXMAC_CONFIG, val);
5698
5699 val = nr64_mac(BMAC_ADDR_CMPEN);
5700 val |= BMAC_ADDR_CMPEN_EN0;
5701 nw64_mac(BMAC_ADDR_CMPEN, val);
5702 }
5703
5704 static void niu_init_rx_mac(struct niu *np)
5705 {
5706 niu_set_primary_mac(np, np->dev->dev_addr);
5707
5708 if (np->flags & NIU_FLAGS_XMAC)
5709 niu_init_rx_xmac(np);
5710 else
5711 niu_init_rx_bmac(np);
5712 }
5713
5714 static void niu_enable_tx_xmac(struct niu *np, int on)
5715 {
5716 u64 val = nr64_mac(XMAC_CONFIG);
5717
5718 if (on)
5719 val |= XMAC_CONFIG_TX_ENABLE;
5720 else
5721 val &= ~XMAC_CONFIG_TX_ENABLE;
5722 nw64_mac(XMAC_CONFIG, val);
5723 }
5724
5725 static void niu_enable_tx_bmac(struct niu *np, int on)
5726 {
5727 u64 val = nr64_mac(BTXMAC_CONFIG);
5728
5729 if (on)
5730 val |= BTXMAC_CONFIG_ENABLE;
5731 else
5732 val &= ~BTXMAC_CONFIG_ENABLE;
5733 nw64_mac(BTXMAC_CONFIG, val);
5734 }
5735
5736 static void niu_enable_tx_mac(struct niu *np, int on)
5737 {
5738 if (np->flags & NIU_FLAGS_XMAC)
5739 niu_enable_tx_xmac(np, on);
5740 else
5741 niu_enable_tx_bmac(np, on);
5742 }
5743
5744 static void niu_enable_rx_xmac(struct niu *np, int on)
5745 {
5746 u64 val = nr64_mac(XMAC_CONFIG);
5747
5748 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5749 XMAC_CONFIG_PROMISCUOUS);
5750
5751 if (np->flags & NIU_FLAGS_MCAST)
5752 val |= XMAC_CONFIG_HASH_FILTER_EN;
5753 if (np->flags & NIU_FLAGS_PROMISC)
5754 val |= XMAC_CONFIG_PROMISCUOUS;
5755
5756 if (on)
5757 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5758 else
5759 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5760 nw64_mac(XMAC_CONFIG, val);
5761 }
5762
5763 static void niu_enable_rx_bmac(struct niu *np, int on)
5764 {
5765 u64 val = nr64_mac(BRXMAC_CONFIG);
5766
5767 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5768 BRXMAC_CONFIG_PROMISC);
5769
5770 if (np->flags & NIU_FLAGS_MCAST)
5771 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5772 if (np->flags & NIU_FLAGS_PROMISC)
5773 val |= BRXMAC_CONFIG_PROMISC;
5774
5775 if (on)
5776 val |= BRXMAC_CONFIG_ENABLE;
5777 else
5778 val &= ~BRXMAC_CONFIG_ENABLE;
5779 nw64_mac(BRXMAC_CONFIG, val);
5780 }
5781
5782 static void niu_enable_rx_mac(struct niu *np, int on)
5783 {
5784 if (np->flags & NIU_FLAGS_XMAC)
5785 niu_enable_rx_xmac(np, on);
5786 else
5787 niu_enable_rx_bmac(np, on);
5788 }
5789
5790 static int niu_init_mac(struct niu *np)
5791 {
5792 int err;
5793
5794 niu_init_xif(np);
5795 err = niu_init_pcs(np);
5796 if (err)
5797 return err;
5798
5799 err = niu_reset_tx_mac(np);
5800 if (err)
5801 return err;
5802 niu_init_tx_mac(np);
5803 err = niu_reset_rx_mac(np);
5804 if (err)
5805 return err;
5806 niu_init_rx_mac(np);
5807
5808 /* This looks hookey but the RX MAC reset we just did will
5809 * undo some of the state we setup in niu_init_tx_mac() so we
5810 * have to call it again. In particular, the RX MAC reset will
5811 * set the XMAC_MAX register back to it's default value.
5812 */
5813 niu_init_tx_mac(np);
5814 niu_enable_tx_mac(np, 1);
5815
5816 niu_enable_rx_mac(np, 1);
5817
5818 return 0;
5819 }
5820
5821 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5822 {
5823 (void) niu_tx_channel_stop(np, rp->tx_channel);
5824 }
5825
5826 static void niu_stop_tx_channels(struct niu *np)
5827 {
5828 int i;
5829
5830 for (i = 0; i < np->num_tx_rings; i++) {
5831 struct tx_ring_info *rp = &np->tx_rings[i];
5832
5833 niu_stop_one_tx_channel(np, rp);
5834 }
5835 }
5836
5837 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5838 {
5839 (void) niu_tx_channel_reset(np, rp->tx_channel);
5840 }
5841
5842 static void niu_reset_tx_channels(struct niu *np)
5843 {
5844 int i;
5845
5846 for (i = 0; i < np->num_tx_rings; i++) {
5847 struct tx_ring_info *rp = &np->tx_rings[i];
5848
5849 niu_reset_one_tx_channel(np, rp);
5850 }
5851 }
5852
5853 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5854 {
5855 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5856 }
5857
5858 static void niu_stop_rx_channels(struct niu *np)
5859 {
5860 int i;
5861
5862 for (i = 0; i < np->num_rx_rings; i++) {
5863 struct rx_ring_info *rp = &np->rx_rings[i];
5864
5865 niu_stop_one_rx_channel(np, rp);
5866 }
5867 }
5868
5869 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5870 {
5871 int channel = rp->rx_channel;
5872
5873 (void) niu_rx_channel_reset(np, channel);
5874 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5875 nw64(RX_DMA_CTL_STAT(channel), 0);
5876 (void) niu_enable_rx_channel(np, channel, 0);
5877 }
5878
5879 static void niu_reset_rx_channels(struct niu *np)
5880 {
5881 int i;
5882
5883 for (i = 0; i < np->num_rx_rings; i++) {
5884 struct rx_ring_info *rp = &np->rx_rings[i];
5885
5886 niu_reset_one_rx_channel(np, rp);
5887 }
5888 }
5889
5890 static void niu_disable_ipp(struct niu *np)
5891 {
5892 u64 rd, wr, val;
5893 int limit;
5894
5895 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5896 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5897 limit = 100;
5898 while (--limit >= 0 && (rd != wr)) {
5899 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5900 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5901 }
5902 if (limit < 0 &&
5903 (rd != 0 && wr != 1)) {
5904 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5905 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5906 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5907 }
5908
5909 val = nr64_ipp(IPP_CFIG);
5910 val &= ~(IPP_CFIG_IPP_ENABLE |
5911 IPP_CFIG_DFIFO_ECC_EN |
5912 IPP_CFIG_DROP_BAD_CRC |
5913 IPP_CFIG_CKSUM_EN);
5914 nw64_ipp(IPP_CFIG, val);
5915
5916 (void) niu_ipp_reset(np);
5917 }
5918
5919 static int niu_init_hw(struct niu *np)
5920 {
5921 int i, err;
5922
5923 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5924 niu_txc_enable_port(np, 1);
5925 niu_txc_port_dma_enable(np, 1);
5926 niu_txc_set_imask(np, 0);
5927
5928 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5929 for (i = 0; i < np->num_tx_rings; i++) {
5930 struct tx_ring_info *rp = &np->tx_rings[i];
5931
5932 err = niu_init_one_tx_channel(np, rp);
5933 if (err)
5934 return err;
5935 }
5936
5937 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5938 err = niu_init_rx_channels(np);
5939 if (err)
5940 goto out_uninit_tx_channels;
5941
5942 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5943 err = niu_init_classifier_hw(np);
5944 if (err)
5945 goto out_uninit_rx_channels;
5946
5947 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5948 err = niu_init_zcp(np);
5949 if (err)
5950 goto out_uninit_rx_channels;
5951
5952 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5953 err = niu_init_ipp(np);
5954 if (err)
5955 goto out_uninit_rx_channels;
5956
5957 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5958 err = niu_init_mac(np);
5959 if (err)
5960 goto out_uninit_ipp;
5961
5962 return 0;
5963
5964 out_uninit_ipp:
5965 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5966 niu_disable_ipp(np);
5967
5968 out_uninit_rx_channels:
5969 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5970 niu_stop_rx_channels(np);
5971 niu_reset_rx_channels(np);
5972
5973 out_uninit_tx_channels:
5974 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5975 niu_stop_tx_channels(np);
5976 niu_reset_tx_channels(np);
5977
5978 return err;
5979 }
5980
5981 static void niu_stop_hw(struct niu *np)
5982 {
5983 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
5984 niu_enable_interrupts(np, 0);
5985
5986 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
5987 niu_enable_rx_mac(np, 0);
5988
5989 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
5990 niu_disable_ipp(np);
5991
5992 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
5993 niu_stop_tx_channels(np);
5994
5995 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
5996 niu_stop_rx_channels(np);
5997
5998 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
5999 niu_reset_tx_channels(np);
6000
6001 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6002 niu_reset_rx_channels(np);
6003 }
6004
6005 static void niu_set_irq_name(struct niu *np)
6006 {
6007 int port = np->port;
6008 int i, j = 1;
6009
6010 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6011
6012 if (port == 0) {
6013 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6014 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6015 j = 3;
6016 }
6017
6018 for (i = 0; i < np->num_ldg - j; i++) {
6019 if (i < np->num_rx_rings)
6020 sprintf(np->irq_name[i+j], "%s-rx-%d",
6021 np->dev->name, i);
6022 else if (i < np->num_tx_rings + np->num_rx_rings)
6023 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6024 i - np->num_rx_rings);
6025 }
6026 }
6027
6028 static int niu_request_irq(struct niu *np)
6029 {
6030 int i, j, err;
6031
6032 niu_set_irq_name(np);
6033
6034 err = 0;
6035 for (i = 0; i < np->num_ldg; i++) {
6036 struct niu_ldg *lp = &np->ldg[i];
6037
6038 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6039 np->irq_name[i], lp);
6040 if (err)
6041 goto out_free_irqs;
6042
6043 }
6044
6045 return 0;
6046
6047 out_free_irqs:
6048 for (j = 0; j < i; j++) {
6049 struct niu_ldg *lp = &np->ldg[j];
6050
6051 free_irq(lp->irq, lp);
6052 }
6053 return err;
6054 }
6055
6056 static void niu_free_irq(struct niu *np)
6057 {
6058 int i;
6059
6060 for (i = 0; i < np->num_ldg; i++) {
6061 struct niu_ldg *lp = &np->ldg[i];
6062
6063 free_irq(lp->irq, lp);
6064 }
6065 }
6066
6067 static void niu_enable_napi(struct niu *np)
6068 {
6069 int i;
6070
6071 for (i = 0; i < np->num_ldg; i++)
6072 napi_enable(&np->ldg[i].napi);
6073 }
6074
6075 static void niu_disable_napi(struct niu *np)
6076 {
6077 int i;
6078
6079 for (i = 0; i < np->num_ldg; i++)
6080 napi_disable(&np->ldg[i].napi);
6081 }
6082
6083 static int niu_open(struct net_device *dev)
6084 {
6085 struct niu *np = netdev_priv(dev);
6086 int err;
6087
6088 netif_carrier_off(dev);
6089
6090 err = niu_alloc_channels(np);
6091 if (err)
6092 goto out_err;
6093
6094 err = niu_enable_interrupts(np, 0);
6095 if (err)
6096 goto out_free_channels;
6097
6098 err = niu_request_irq(np);
6099 if (err)
6100 goto out_free_channels;
6101
6102 niu_enable_napi(np);
6103
6104 spin_lock_irq(&np->lock);
6105
6106 err = niu_init_hw(np);
6107 if (!err) {
6108 timer_setup(&np->timer, niu_timer, 0);
6109 np->timer.expires = jiffies + HZ;
6110
6111 err = niu_enable_interrupts(np, 1);
6112 if (err)
6113 niu_stop_hw(np);
6114 }
6115
6116 spin_unlock_irq(&np->lock);
6117
6118 if (err) {
6119 niu_disable_napi(np);
6120 goto out_free_irq;
6121 }
6122
6123 netif_tx_start_all_queues(dev);
6124
6125 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6126 netif_carrier_on(dev);
6127
6128 add_timer(&np->timer);
6129
6130 return 0;
6131
6132 out_free_irq:
6133 niu_free_irq(np);
6134
6135 out_free_channels:
6136 niu_free_channels(np);
6137
6138 out_err:
6139 return err;
6140 }
6141
6142 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6143 {
6144 cancel_work_sync(&np->reset_task);
6145
6146 niu_disable_napi(np);
6147 netif_tx_stop_all_queues(dev);
6148
6149 del_timer_sync(&np->timer);
6150
6151 spin_lock_irq(&np->lock);
6152
6153 niu_stop_hw(np);
6154
6155 spin_unlock_irq(&np->lock);
6156 }
6157
6158 static int niu_close(struct net_device *dev)
6159 {
6160 struct niu *np = netdev_priv(dev);
6161
6162 niu_full_shutdown(np, dev);
6163
6164 niu_free_irq(np);
6165
6166 niu_free_channels(np);
6167
6168 niu_handle_led(np, 0);
6169
6170 return 0;
6171 }
6172
6173 static void niu_sync_xmac_stats(struct niu *np)
6174 {
6175 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6176
6177 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6178 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6179
6180 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6181 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6182 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6183 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6184 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6185 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6186 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6187 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6188 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6189 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6190 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6191 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6192 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6193 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6194 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6195 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6196 }
6197
6198 static void niu_sync_bmac_stats(struct niu *np)
6199 {
6200 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6201
6202 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6203 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6204
6205 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6206 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6207 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6208 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6209 }
6210
6211 static void niu_sync_mac_stats(struct niu *np)
6212 {
6213 if (np->flags & NIU_FLAGS_XMAC)
6214 niu_sync_xmac_stats(np);
6215 else
6216 niu_sync_bmac_stats(np);
6217 }
6218
6219 static void niu_get_rx_stats(struct niu *np,
6220 struct rtnl_link_stats64 *stats)
6221 {
6222 u64 pkts, dropped, errors, bytes;
6223 struct rx_ring_info *rx_rings;
6224 int i;
6225
6226 pkts = dropped = errors = bytes = 0;
6227
6228 rx_rings = READ_ONCE(np->rx_rings);
6229 if (!rx_rings)
6230 goto no_rings;
6231
6232 for (i = 0; i < np->num_rx_rings; i++) {
6233 struct rx_ring_info *rp = &rx_rings[i];
6234
6235 niu_sync_rx_discard_stats(np, rp, 0);
6236
6237 pkts += rp->rx_packets;
6238 bytes += rp->rx_bytes;
6239 dropped += rp->rx_dropped;
6240 errors += rp->rx_errors;
6241 }
6242
6243 no_rings:
6244 stats->rx_packets = pkts;
6245 stats->rx_bytes = bytes;
6246 stats->rx_dropped = dropped;
6247 stats->rx_errors = errors;
6248 }
6249
6250 static void niu_get_tx_stats(struct niu *np,
6251 struct rtnl_link_stats64 *stats)
6252 {
6253 u64 pkts, errors, bytes;
6254 struct tx_ring_info *tx_rings;
6255 int i;
6256
6257 pkts = errors = bytes = 0;
6258
6259 tx_rings = READ_ONCE(np->tx_rings);
6260 if (!tx_rings)
6261 goto no_rings;
6262
6263 for (i = 0; i < np->num_tx_rings; i++) {
6264 struct tx_ring_info *rp = &tx_rings[i];
6265
6266 pkts += rp->tx_packets;
6267 bytes += rp->tx_bytes;
6268 errors += rp->tx_errors;
6269 }
6270
6271 no_rings:
6272 stats->tx_packets = pkts;
6273 stats->tx_bytes = bytes;
6274 stats->tx_errors = errors;
6275 }
6276
6277 static void niu_get_stats(struct net_device *dev,
6278 struct rtnl_link_stats64 *stats)
6279 {
6280 struct niu *np = netdev_priv(dev);
6281
6282 if (netif_running(dev)) {
6283 niu_get_rx_stats(np, stats);
6284 niu_get_tx_stats(np, stats);
6285 }
6286 }
6287
6288 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6289 {
6290 int i;
6291
6292 for (i = 0; i < 16; i++)
6293 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6294 }
6295
6296 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6297 {
6298 int i;
6299
6300 for (i = 0; i < 16; i++)
6301 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6302 }
6303
6304 static void niu_load_hash(struct niu *np, u16 *hash)
6305 {
6306 if (np->flags & NIU_FLAGS_XMAC)
6307 niu_load_hash_xmac(np, hash);
6308 else
6309 niu_load_hash_bmac(np, hash);
6310 }
6311
6312 static void niu_set_rx_mode(struct net_device *dev)
6313 {
6314 struct niu *np = netdev_priv(dev);
6315 int i, alt_cnt, err;
6316 struct netdev_hw_addr *ha;
6317 unsigned long flags;
6318 u16 hash[16] = { 0, };
6319
6320 spin_lock_irqsave(&np->lock, flags);
6321 niu_enable_rx_mac(np, 0);
6322
6323 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6324 if (dev->flags & IFF_PROMISC)
6325 np->flags |= NIU_FLAGS_PROMISC;
6326 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6327 np->flags |= NIU_FLAGS_MCAST;
6328
6329 alt_cnt = netdev_uc_count(dev);
6330 if (alt_cnt > niu_num_alt_addr(np)) {
6331 alt_cnt = 0;
6332 np->flags |= NIU_FLAGS_PROMISC;
6333 }
6334
6335 if (alt_cnt) {
6336 int index = 0;
6337
6338 netdev_for_each_uc_addr(ha, dev) {
6339 err = niu_set_alt_mac(np, index, ha->addr);
6340 if (err)
6341 netdev_warn(dev, "Error %d adding alt mac %d\n",
6342 err, index);
6343 err = niu_enable_alt_mac(np, index, 1);
6344 if (err)
6345 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6346 err, index);
6347
6348 index++;
6349 }
6350 } else {
6351 int alt_start;
6352 if (np->flags & NIU_FLAGS_XMAC)
6353 alt_start = 0;
6354 else
6355 alt_start = 1;
6356 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6357 err = niu_enable_alt_mac(np, i, 0);
6358 if (err)
6359 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6360 err, i);
6361 }
6362 }
6363 if (dev->flags & IFF_ALLMULTI) {
6364 for (i = 0; i < 16; i++)
6365 hash[i] = 0xffff;
6366 } else if (!netdev_mc_empty(dev)) {
6367 netdev_for_each_mc_addr(ha, dev) {
6368 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6369
6370 crc >>= 24;
6371 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6372 }
6373 }
6374
6375 if (np->flags & NIU_FLAGS_MCAST)
6376 niu_load_hash(np, hash);
6377
6378 niu_enable_rx_mac(np, 1);
6379 spin_unlock_irqrestore(&np->lock, flags);
6380 }
6381
6382 static int niu_set_mac_addr(struct net_device *dev, void *p)
6383 {
6384 struct niu *np = netdev_priv(dev);
6385 struct sockaddr *addr = p;
6386 unsigned long flags;
6387
6388 if (!is_valid_ether_addr(addr->sa_data))
6389 return -EADDRNOTAVAIL;
6390
6391 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6392
6393 if (!netif_running(dev))
6394 return 0;
6395
6396 spin_lock_irqsave(&np->lock, flags);
6397 niu_enable_rx_mac(np, 0);
6398 niu_set_primary_mac(np, dev->dev_addr);
6399 niu_enable_rx_mac(np, 1);
6400 spin_unlock_irqrestore(&np->lock, flags);
6401
6402 return 0;
6403 }
6404
6405 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6406 {
6407 return -EOPNOTSUPP;
6408 }
6409
6410 static void niu_netif_stop(struct niu *np)
6411 {
6412 netif_trans_update(np->dev); /* prevent tx timeout */
6413
6414 niu_disable_napi(np);
6415
6416 netif_tx_disable(np->dev);
6417 }
6418
6419 static void niu_netif_start(struct niu *np)
6420 {
6421 /* NOTE: unconditional netif_wake_queue is only appropriate
6422 * so long as all callers are assured to have free tx slots
6423 * (such as after niu_init_hw).
6424 */
6425 netif_tx_wake_all_queues(np->dev);
6426
6427 niu_enable_napi(np);
6428
6429 niu_enable_interrupts(np, 1);
6430 }
6431
6432 static void niu_reset_buffers(struct niu *np)
6433 {
6434 int i, j, k, err;
6435
6436 if (np->rx_rings) {
6437 for (i = 0; i < np->num_rx_rings; i++) {
6438 struct rx_ring_info *rp = &np->rx_rings[i];
6439
6440 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6441 struct page *page;
6442
6443 page = rp->rxhash[j];
6444 while (page) {
6445 struct page *next =
6446 (struct page *) page->mapping;
6447 u64 base = page->index;
6448 base = base >> RBR_DESCR_ADDR_SHIFT;
6449 rp->rbr[k++] = cpu_to_le32(base);
6450 page = next;
6451 }
6452 }
6453 for (; k < MAX_RBR_RING_SIZE; k++) {
6454 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6455 if (unlikely(err))
6456 break;
6457 }
6458
6459 rp->rbr_index = rp->rbr_table_size - 1;
6460 rp->rcr_index = 0;
6461 rp->rbr_pending = 0;
6462 rp->rbr_refill_pending = 0;
6463 }
6464 }
6465 if (np->tx_rings) {
6466 for (i = 0; i < np->num_tx_rings; i++) {
6467 struct tx_ring_info *rp = &np->tx_rings[i];
6468
6469 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6470 if (rp->tx_buffs[j].skb)
6471 (void) release_tx_packet(np, rp, j);
6472 }
6473
6474 rp->pending = MAX_TX_RING_SIZE;
6475 rp->prod = 0;
6476 rp->cons = 0;
6477 rp->wrap_bit = 0;
6478 }
6479 }
6480 }
6481
6482 static void niu_reset_task(struct work_struct *work)
6483 {
6484 struct niu *np = container_of(work, struct niu, reset_task);
6485 unsigned long flags;
6486 int err;
6487
6488 spin_lock_irqsave(&np->lock, flags);
6489 if (!netif_running(np->dev)) {
6490 spin_unlock_irqrestore(&np->lock, flags);
6491 return;
6492 }
6493
6494 spin_unlock_irqrestore(&np->lock, flags);
6495
6496 del_timer_sync(&np->timer);
6497
6498 niu_netif_stop(np);
6499
6500 spin_lock_irqsave(&np->lock, flags);
6501
6502 niu_stop_hw(np);
6503
6504 spin_unlock_irqrestore(&np->lock, flags);
6505
6506 niu_reset_buffers(np);
6507
6508 spin_lock_irqsave(&np->lock, flags);
6509
6510 err = niu_init_hw(np);
6511 if (!err) {
6512 np->timer.expires = jiffies + HZ;
6513 add_timer(&np->timer);
6514 niu_netif_start(np);
6515 }
6516
6517 spin_unlock_irqrestore(&np->lock, flags);
6518 }
6519
6520 static void niu_tx_timeout(struct net_device *dev, unsigned int txqueue)
6521 {
6522 struct niu *np = netdev_priv(dev);
6523
6524 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6525 dev->name);
6526
6527 schedule_work(&np->reset_task);
6528 }
6529
6530 static void niu_set_txd(struct tx_ring_info *rp, int index,
6531 u64 mapping, u64 len, u64 mark,
6532 u64 n_frags)
6533 {
6534 __le64 *desc = &rp->descr[index];
6535
6536 *desc = cpu_to_le64(mark |
6537 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6538 (len << TX_DESC_TR_LEN_SHIFT) |
6539 (mapping & TX_DESC_SAD));
6540 }
6541
6542 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6543 u64 pad_bytes, u64 len)
6544 {
6545 u16 eth_proto, eth_proto_inner;
6546 u64 csum_bits, l3off, ihl, ret;
6547 u8 ip_proto;
6548 int ipv6;
6549
6550 eth_proto = be16_to_cpu(ehdr->h_proto);
6551 eth_proto_inner = eth_proto;
6552 if (eth_proto == ETH_P_8021Q) {
6553 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6554 __be16 val = vp->h_vlan_encapsulated_proto;
6555
6556 eth_proto_inner = be16_to_cpu(val);
6557 }
6558
6559 ipv6 = ihl = 0;
6560 switch (skb->protocol) {
6561 case cpu_to_be16(ETH_P_IP):
6562 ip_proto = ip_hdr(skb)->protocol;
6563 ihl = ip_hdr(skb)->ihl;
6564 break;
6565 case cpu_to_be16(ETH_P_IPV6):
6566 ip_proto = ipv6_hdr(skb)->nexthdr;
6567 ihl = (40 >> 2);
6568 ipv6 = 1;
6569 break;
6570 default:
6571 ip_proto = ihl = 0;
6572 break;
6573 }
6574
6575 csum_bits = TXHDR_CSUM_NONE;
6576 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6577 u64 start, stuff;
6578
6579 csum_bits = (ip_proto == IPPROTO_TCP ?
6580 TXHDR_CSUM_TCP :
6581 (ip_proto == IPPROTO_UDP ?
6582 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6583
6584 start = skb_checksum_start_offset(skb) -
6585 (pad_bytes + sizeof(struct tx_pkt_hdr));
6586 stuff = start + skb->csum_offset;
6587
6588 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6589 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6590 }
6591
6592 l3off = skb_network_offset(skb) -
6593 (pad_bytes + sizeof(struct tx_pkt_hdr));
6594
6595 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6596 (len << TXHDR_LEN_SHIFT) |
6597 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6598 (ihl << TXHDR_IHL_SHIFT) |
6599 ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
6600 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6601 (ipv6 ? TXHDR_IP_VER : 0) |
6602 csum_bits);
6603
6604 return ret;
6605 }
6606
6607 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6608 struct net_device *dev)
6609 {
6610 struct niu *np = netdev_priv(dev);
6611 unsigned long align, headroom;
6612 struct netdev_queue *txq;
6613 struct tx_ring_info *rp;
6614 struct tx_pkt_hdr *tp;
6615 unsigned int len, nfg;
6616 struct ethhdr *ehdr;
6617 int prod, i, tlen;
6618 u64 mapping, mrk;
6619
6620 i = skb_get_queue_mapping(skb);
6621 rp = &np->tx_rings[i];
6622 txq = netdev_get_tx_queue(dev, i);
6623
6624 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6625 netif_tx_stop_queue(txq);
6626 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6627 rp->tx_errors++;
6628 return NETDEV_TX_BUSY;
6629 }
6630
6631 if (eth_skb_pad(skb))
6632 goto out;
6633
6634 len = sizeof(struct tx_pkt_hdr) + 15;
6635 if (skb_headroom(skb) < len) {
6636 struct sk_buff *skb_new;
6637
6638 skb_new = skb_realloc_headroom(skb, len);
6639 if (!skb_new)
6640 goto out_drop;
6641 kfree_skb(skb);
6642 skb = skb_new;
6643 } else
6644 skb_orphan(skb);
6645
6646 align = ((unsigned long) skb->data & (16 - 1));
6647 headroom = align + sizeof(struct tx_pkt_hdr);
6648
6649 ehdr = (struct ethhdr *) skb->data;
6650 tp = skb_push(skb, headroom);
6651
6652 len = skb->len - sizeof(struct tx_pkt_hdr);
6653 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6654 tp->resv = 0;
6655
6656 len = skb_headlen(skb);
6657 mapping = np->ops->map_single(np->device, skb->data,
6658 len, DMA_TO_DEVICE);
6659
6660 prod = rp->prod;
6661
6662 rp->tx_buffs[prod].skb = skb;
6663 rp->tx_buffs[prod].mapping = mapping;
6664
6665 mrk = TX_DESC_SOP;
6666 if (++rp->mark_counter == rp->mark_freq) {
6667 rp->mark_counter = 0;
6668 mrk |= TX_DESC_MARK;
6669 rp->mark_pending++;
6670 }
6671
6672 tlen = len;
6673 nfg = skb_shinfo(skb)->nr_frags;
6674 while (tlen > 0) {
6675 tlen -= MAX_TX_DESC_LEN;
6676 nfg++;
6677 }
6678
6679 while (len > 0) {
6680 unsigned int this_len = len;
6681
6682 if (this_len > MAX_TX_DESC_LEN)
6683 this_len = MAX_TX_DESC_LEN;
6684
6685 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6686 mrk = nfg = 0;
6687
6688 prod = NEXT_TX(rp, prod);
6689 mapping += this_len;
6690 len -= this_len;
6691 }
6692
6693 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6694 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6695
6696 len = skb_frag_size(frag);
6697 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6698 skb_frag_off(frag), len,
6699 DMA_TO_DEVICE);
6700
6701 rp->tx_buffs[prod].skb = NULL;
6702 rp->tx_buffs[prod].mapping = mapping;
6703
6704 niu_set_txd(rp, prod, mapping, len, 0, 0);
6705
6706 prod = NEXT_TX(rp, prod);
6707 }
6708
6709 if (prod < rp->prod)
6710 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6711 rp->prod = prod;
6712
6713 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6714
6715 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6716 netif_tx_stop_queue(txq);
6717 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6718 netif_tx_wake_queue(txq);
6719 }
6720
6721 out:
6722 return NETDEV_TX_OK;
6723
6724 out_drop:
6725 rp->tx_errors++;
6726 kfree_skb(skb);
6727 goto out;
6728 }
6729
6730 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6731 {
6732 struct niu *np = netdev_priv(dev);
6733 int err, orig_jumbo, new_jumbo;
6734
6735 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6736 new_jumbo = (new_mtu > ETH_DATA_LEN);
6737
6738 dev->mtu = new_mtu;
6739
6740 if (!netif_running(dev) ||
6741 (orig_jumbo == new_jumbo))
6742 return 0;
6743
6744 niu_full_shutdown(np, dev);
6745
6746 niu_free_channels(np);
6747
6748 niu_enable_napi(np);
6749
6750 err = niu_alloc_channels(np);
6751 if (err)
6752 return err;
6753
6754 spin_lock_irq(&np->lock);
6755
6756 err = niu_init_hw(np);
6757 if (!err) {
6758 timer_setup(&np->timer, niu_timer, 0);
6759 np->timer.expires = jiffies + HZ;
6760
6761 err = niu_enable_interrupts(np, 1);
6762 if (err)
6763 niu_stop_hw(np);
6764 }
6765
6766 spin_unlock_irq(&np->lock);
6767
6768 if (!err) {
6769 netif_tx_start_all_queues(dev);
6770 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6771 netif_carrier_on(dev);
6772
6773 add_timer(&np->timer);
6774 }
6775
6776 return err;
6777 }
6778
6779 static void niu_get_drvinfo(struct net_device *dev,
6780 struct ethtool_drvinfo *info)
6781 {
6782 struct niu *np = netdev_priv(dev);
6783 struct niu_vpd *vpd = &np->vpd;
6784
6785 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
6786 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
6787 snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6788 vpd->fcode_major, vpd->fcode_minor);
6789 if (np->parent->plat_type != PLAT_TYPE_NIU)
6790 strlcpy(info->bus_info, pci_name(np->pdev),
6791 sizeof(info->bus_info));
6792 }
6793
6794 static int niu_get_link_ksettings(struct net_device *dev,
6795 struct ethtool_link_ksettings *cmd)
6796 {
6797 struct niu *np = netdev_priv(dev);
6798 struct niu_link_config *lp;
6799
6800 lp = &np->link_config;
6801
6802 memset(cmd, 0, sizeof(*cmd));
6803 cmd->base.phy_address = np->phy_addr;
6804 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
6805 lp->supported);
6806 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
6807 lp->active_advertising);
6808 cmd->base.autoneg = lp->active_autoneg;
6809 cmd->base.speed = lp->active_speed;
6810 cmd->base.duplex = lp->active_duplex;
6811 cmd->base.port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6812
6813 return 0;
6814 }
6815
6816 static int niu_set_link_ksettings(struct net_device *dev,
6817 const struct ethtool_link_ksettings *cmd)
6818 {
6819 struct niu *np = netdev_priv(dev);
6820 struct niu_link_config *lp = &np->link_config;
6821
6822 ethtool_convert_link_mode_to_legacy_u32(&lp->advertising,
6823 cmd->link_modes.advertising);
6824 lp->speed = cmd->base.speed;
6825 lp->duplex = cmd->base.duplex;
6826 lp->autoneg = cmd->base.autoneg;
6827 return niu_init_link(np);
6828 }
6829
6830 static u32 niu_get_msglevel(struct net_device *dev)
6831 {
6832 struct niu *np = netdev_priv(dev);
6833 return np->msg_enable;
6834 }
6835
6836 static void niu_set_msglevel(struct net_device *dev, u32 value)
6837 {
6838 struct niu *np = netdev_priv(dev);
6839 np->msg_enable = value;
6840 }
6841
6842 static int niu_nway_reset(struct net_device *dev)
6843 {
6844 struct niu *np = netdev_priv(dev);
6845
6846 if (np->link_config.autoneg)
6847 return niu_init_link(np);
6848
6849 return 0;
6850 }
6851
6852 static int niu_get_eeprom_len(struct net_device *dev)
6853 {
6854 struct niu *np = netdev_priv(dev);
6855
6856 return np->eeprom_len;
6857 }
6858
6859 static int niu_get_eeprom(struct net_device *dev,
6860 struct ethtool_eeprom *eeprom, u8 *data)
6861 {
6862 struct niu *np = netdev_priv(dev);
6863 u32 offset, len, val;
6864
6865 offset = eeprom->offset;
6866 len = eeprom->len;
6867
6868 if (offset + len < offset)
6869 return -EINVAL;
6870 if (offset >= np->eeprom_len)
6871 return -EINVAL;
6872 if (offset + len > np->eeprom_len)
6873 len = eeprom->len = np->eeprom_len - offset;
6874
6875 if (offset & 3) {
6876 u32 b_offset, b_count;
6877
6878 b_offset = offset & 3;
6879 b_count = 4 - b_offset;
6880 if (b_count > len)
6881 b_count = len;
6882
6883 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6884 memcpy(data, ((char *)&val) + b_offset, b_count);
6885 data += b_count;
6886 len -= b_count;
6887 offset += b_count;
6888 }
6889 while (len >= 4) {
6890 val = nr64(ESPC_NCR(offset / 4));
6891 memcpy(data, &val, 4);
6892 data += 4;
6893 len -= 4;
6894 offset += 4;
6895 }
6896 if (len) {
6897 val = nr64(ESPC_NCR(offset / 4));
6898 memcpy(data, &val, len);
6899 }
6900 return 0;
6901 }
6902
6903 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6904 {
6905 switch (flow_type) {
6906 case TCP_V4_FLOW:
6907 case TCP_V6_FLOW:
6908 *pid = IPPROTO_TCP;
6909 break;
6910 case UDP_V4_FLOW:
6911 case UDP_V6_FLOW:
6912 *pid = IPPROTO_UDP;
6913 break;
6914 case SCTP_V4_FLOW:
6915 case SCTP_V6_FLOW:
6916 *pid = IPPROTO_SCTP;
6917 break;
6918 case AH_V4_FLOW:
6919 case AH_V6_FLOW:
6920 *pid = IPPROTO_AH;
6921 break;
6922 case ESP_V4_FLOW:
6923 case ESP_V6_FLOW:
6924 *pid = IPPROTO_ESP;
6925 break;
6926 default:
6927 *pid = 0;
6928 break;
6929 }
6930 }
6931
6932 static int niu_class_to_ethflow(u64 class, int *flow_type)
6933 {
6934 switch (class) {
6935 case CLASS_CODE_TCP_IPV4:
6936 *flow_type = TCP_V4_FLOW;
6937 break;
6938 case CLASS_CODE_UDP_IPV4:
6939 *flow_type = UDP_V4_FLOW;
6940 break;
6941 case CLASS_CODE_AH_ESP_IPV4:
6942 *flow_type = AH_V4_FLOW;
6943 break;
6944 case CLASS_CODE_SCTP_IPV4:
6945 *flow_type = SCTP_V4_FLOW;
6946 break;
6947 case CLASS_CODE_TCP_IPV6:
6948 *flow_type = TCP_V6_FLOW;
6949 break;
6950 case CLASS_CODE_UDP_IPV6:
6951 *flow_type = UDP_V6_FLOW;
6952 break;
6953 case CLASS_CODE_AH_ESP_IPV6:
6954 *flow_type = AH_V6_FLOW;
6955 break;
6956 case CLASS_CODE_SCTP_IPV6:
6957 *flow_type = SCTP_V6_FLOW;
6958 break;
6959 case CLASS_CODE_USER_PROG1:
6960 case CLASS_CODE_USER_PROG2:
6961 case CLASS_CODE_USER_PROG3:
6962 case CLASS_CODE_USER_PROG4:
6963 *flow_type = IP_USER_FLOW;
6964 break;
6965 default:
6966 return -EINVAL;
6967 }
6968
6969 return 0;
6970 }
6971
6972 static int niu_ethflow_to_class(int flow_type, u64 *class)
6973 {
6974 switch (flow_type) {
6975 case TCP_V4_FLOW:
6976 *class = CLASS_CODE_TCP_IPV4;
6977 break;
6978 case UDP_V4_FLOW:
6979 *class = CLASS_CODE_UDP_IPV4;
6980 break;
6981 case AH_ESP_V4_FLOW:
6982 case AH_V4_FLOW:
6983 case ESP_V4_FLOW:
6984 *class = CLASS_CODE_AH_ESP_IPV4;
6985 break;
6986 case SCTP_V4_FLOW:
6987 *class = CLASS_CODE_SCTP_IPV4;
6988 break;
6989 case TCP_V6_FLOW:
6990 *class = CLASS_CODE_TCP_IPV6;
6991 break;
6992 case UDP_V6_FLOW:
6993 *class = CLASS_CODE_UDP_IPV6;
6994 break;
6995 case AH_ESP_V6_FLOW:
6996 case AH_V6_FLOW:
6997 case ESP_V6_FLOW:
6998 *class = CLASS_CODE_AH_ESP_IPV6;
6999 break;
7000 case SCTP_V6_FLOW:
7001 *class = CLASS_CODE_SCTP_IPV6;
7002 break;
7003 default:
7004 return 0;
7005 }
7006
7007 return 1;
7008 }
7009
7010 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7011 {
7012 u64 ethflow = 0;
7013
7014 if (flow_key & FLOW_KEY_L2DA)
7015 ethflow |= RXH_L2DA;
7016 if (flow_key & FLOW_KEY_VLAN)
7017 ethflow |= RXH_VLAN;
7018 if (flow_key & FLOW_KEY_IPSA)
7019 ethflow |= RXH_IP_SRC;
7020 if (flow_key & FLOW_KEY_IPDA)
7021 ethflow |= RXH_IP_DST;
7022 if (flow_key & FLOW_KEY_PROTO)
7023 ethflow |= RXH_L3_PROTO;
7024 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7025 ethflow |= RXH_L4_B_0_1;
7026 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7027 ethflow |= RXH_L4_B_2_3;
7028
7029 return ethflow;
7030
7031 }
7032
7033 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7034 {
7035 u64 key = 0;
7036
7037 if (ethflow & RXH_L2DA)
7038 key |= FLOW_KEY_L2DA;
7039 if (ethflow & RXH_VLAN)
7040 key |= FLOW_KEY_VLAN;
7041 if (ethflow & RXH_IP_SRC)
7042 key |= FLOW_KEY_IPSA;
7043 if (ethflow & RXH_IP_DST)
7044 key |= FLOW_KEY_IPDA;
7045 if (ethflow & RXH_L3_PROTO)
7046 key |= FLOW_KEY_PROTO;
7047 if (ethflow & RXH_L4_B_0_1)
7048 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7049 if (ethflow & RXH_L4_B_2_3)
7050 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7051
7052 *flow_key = key;
7053
7054 return 1;
7055
7056 }
7057
7058 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7059 {
7060 u64 class;
7061
7062 nfc->data = 0;
7063
7064 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7065 return -EINVAL;
7066
7067 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7068 TCAM_KEY_DISC)
7069 nfc->data = RXH_DISCARD;
7070 else
7071 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7072 CLASS_CODE_USER_PROG1]);
7073 return 0;
7074 }
7075
7076 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7077 struct ethtool_rx_flow_spec *fsp)
7078 {
7079 u32 tmp;
7080 u16 prt;
7081
7082 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7083 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7084
7085 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7086 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7087
7088 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7089 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7090
7091 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7092 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7093
7094 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7095 TCAM_V4KEY2_TOS_SHIFT;
7096 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7097 TCAM_V4KEY2_TOS_SHIFT;
7098
7099 switch (fsp->flow_type) {
7100 case TCP_V4_FLOW:
7101 case UDP_V4_FLOW:
7102 case SCTP_V4_FLOW:
7103 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7104 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7105 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7106
7107 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7108 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7109 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7110
7111 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7112 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7113 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7114
7115 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7116 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7117 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7118 break;
7119 case AH_V4_FLOW:
7120 case ESP_V4_FLOW:
7121 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7122 TCAM_V4KEY2_PORT_SPI_SHIFT;
7123 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7124
7125 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7126 TCAM_V4KEY2_PORT_SPI_SHIFT;
7127 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7128 break;
7129 case IP_USER_FLOW:
7130 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7131 TCAM_V4KEY2_PORT_SPI_SHIFT;
7132 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7133
7134 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7135 TCAM_V4KEY2_PORT_SPI_SHIFT;
7136 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7137
7138 fsp->h_u.usr_ip4_spec.proto =
7139 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7140 TCAM_V4KEY2_PROTO_SHIFT;
7141 fsp->m_u.usr_ip4_spec.proto =
7142 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7143 TCAM_V4KEY2_PROTO_SHIFT;
7144
7145 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7146 break;
7147 default:
7148 break;
7149 }
7150 }
7151
7152 static int niu_get_ethtool_tcam_entry(struct niu *np,
7153 struct ethtool_rxnfc *nfc)
7154 {
7155 struct niu_parent *parent = np->parent;
7156 struct niu_tcam_entry *tp;
7157 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7158 u16 idx;
7159 u64 class;
7160 int ret = 0;
7161
7162 idx = tcam_get_index(np, (u16)nfc->fs.location);
7163
7164 tp = &parent->tcam[idx];
7165 if (!tp->valid) {
7166 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7167 parent->index, (u16)nfc->fs.location, idx);
7168 return -EINVAL;
7169 }
7170
7171 /* fill the flow spec entry */
7172 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7173 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7174 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7175 if (ret < 0) {
7176 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7177 parent->index);
7178 goto out;
7179 }
7180
7181 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7182 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7183 TCAM_V4KEY2_PROTO_SHIFT;
7184 if (proto == IPPROTO_ESP) {
7185 if (fsp->flow_type == AH_V4_FLOW)
7186 fsp->flow_type = ESP_V4_FLOW;
7187 else
7188 fsp->flow_type = ESP_V6_FLOW;
7189 }
7190 }
7191
7192 switch (fsp->flow_type) {
7193 case TCP_V4_FLOW:
7194 case UDP_V4_FLOW:
7195 case SCTP_V4_FLOW:
7196 case AH_V4_FLOW:
7197 case ESP_V4_FLOW:
7198 niu_get_ip4fs_from_tcam_key(tp, fsp);
7199 break;
7200 case TCP_V6_FLOW:
7201 case UDP_V6_FLOW:
7202 case SCTP_V6_FLOW:
7203 case AH_V6_FLOW:
7204 case ESP_V6_FLOW:
7205 /* Not yet implemented */
7206 ret = -EINVAL;
7207 break;
7208 case IP_USER_FLOW:
7209 niu_get_ip4fs_from_tcam_key(tp, fsp);
7210 break;
7211 default:
7212 ret = -EINVAL;
7213 break;
7214 }
7215
7216 if (ret < 0)
7217 goto out;
7218
7219 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7220 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7221 else
7222 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7223 TCAM_ASSOCDATA_OFFSET_SHIFT;
7224
7225 /* put the tcam size here */
7226 nfc->data = tcam_get_size(np);
7227 out:
7228 return ret;
7229 }
7230
7231 static int niu_get_ethtool_tcam_all(struct niu *np,
7232 struct ethtool_rxnfc *nfc,
7233 u32 *rule_locs)
7234 {
7235 struct niu_parent *parent = np->parent;
7236 struct niu_tcam_entry *tp;
7237 int i, idx, cnt;
7238 unsigned long flags;
7239 int ret = 0;
7240
7241 /* put the tcam size here */
7242 nfc->data = tcam_get_size(np);
7243
7244 niu_lock_parent(np, flags);
7245 for (cnt = 0, i = 0; i < nfc->data; i++) {
7246 idx = tcam_get_index(np, i);
7247 tp = &parent->tcam[idx];
7248 if (!tp->valid)
7249 continue;
7250 if (cnt == nfc->rule_cnt) {
7251 ret = -EMSGSIZE;
7252 break;
7253 }
7254 rule_locs[cnt] = i;
7255 cnt++;
7256 }
7257 niu_unlock_parent(np, flags);
7258
7259 nfc->rule_cnt = cnt;
7260
7261 return ret;
7262 }
7263
7264 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7265 u32 *rule_locs)
7266 {
7267 struct niu *np = netdev_priv(dev);
7268 int ret = 0;
7269
7270 switch (cmd->cmd) {
7271 case ETHTOOL_GRXFH:
7272 ret = niu_get_hash_opts(np, cmd);
7273 break;
7274 case ETHTOOL_GRXRINGS:
7275 cmd->data = np->num_rx_rings;
7276 break;
7277 case ETHTOOL_GRXCLSRLCNT:
7278 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7279 break;
7280 case ETHTOOL_GRXCLSRULE:
7281 ret = niu_get_ethtool_tcam_entry(np, cmd);
7282 break;
7283 case ETHTOOL_GRXCLSRLALL:
7284 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7285 break;
7286 default:
7287 ret = -EINVAL;
7288 break;
7289 }
7290
7291 return ret;
7292 }
7293
7294 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7295 {
7296 u64 class;
7297 u64 flow_key = 0;
7298 unsigned long flags;
7299
7300 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7301 return -EINVAL;
7302
7303 if (class < CLASS_CODE_USER_PROG1 ||
7304 class > CLASS_CODE_SCTP_IPV6)
7305 return -EINVAL;
7306
7307 if (nfc->data & RXH_DISCARD) {
7308 niu_lock_parent(np, flags);
7309 flow_key = np->parent->tcam_key[class -
7310 CLASS_CODE_USER_PROG1];
7311 flow_key |= TCAM_KEY_DISC;
7312 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7313 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7314 niu_unlock_parent(np, flags);
7315 return 0;
7316 } else {
7317 /* Discard was set before, but is not set now */
7318 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7319 TCAM_KEY_DISC) {
7320 niu_lock_parent(np, flags);
7321 flow_key = np->parent->tcam_key[class -
7322 CLASS_CODE_USER_PROG1];
7323 flow_key &= ~TCAM_KEY_DISC;
7324 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7325 flow_key);
7326 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7327 flow_key;
7328 niu_unlock_parent(np, flags);
7329 }
7330 }
7331
7332 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7333 return -EINVAL;
7334
7335 niu_lock_parent(np, flags);
7336 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7337 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7338 niu_unlock_parent(np, flags);
7339
7340 return 0;
7341 }
7342
7343 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7344 struct niu_tcam_entry *tp,
7345 int l2_rdc_tab, u64 class)
7346 {
7347 u8 pid = 0;
7348 u32 sip, dip, sipm, dipm, spi, spim;
7349 u16 sport, dport, spm, dpm;
7350
7351 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7352 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7353 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7354 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7355
7356 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7357 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7358 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7359 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7360
7361 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7362 tp->key[3] |= dip;
7363
7364 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7365 tp->key_mask[3] |= dipm;
7366
7367 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7368 TCAM_V4KEY2_TOS_SHIFT);
7369 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7370 TCAM_V4KEY2_TOS_SHIFT);
7371 switch (fsp->flow_type) {
7372 case TCP_V4_FLOW:
7373 case UDP_V4_FLOW:
7374 case SCTP_V4_FLOW:
7375 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7376 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7377 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7378 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7379
7380 tp->key[2] |= (((u64)sport << 16) | dport);
7381 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7382 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7383 break;
7384 case AH_V4_FLOW:
7385 case ESP_V4_FLOW:
7386 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7387 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7388
7389 tp->key[2] |= spi;
7390 tp->key_mask[2] |= spim;
7391 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7392 break;
7393 case IP_USER_FLOW:
7394 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7395 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7396
7397 tp->key[2] |= spi;
7398 tp->key_mask[2] |= spim;
7399 pid = fsp->h_u.usr_ip4_spec.proto;
7400 break;
7401 default:
7402 break;
7403 }
7404
7405 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7406 if (pid) {
7407 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7408 }
7409 }
7410
7411 static int niu_add_ethtool_tcam_entry(struct niu *np,
7412 struct ethtool_rxnfc *nfc)
7413 {
7414 struct niu_parent *parent = np->parent;
7415 struct niu_tcam_entry *tp;
7416 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7417 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7418 int l2_rdc_table = rdc_table->first_table_num;
7419 u16 idx;
7420 u64 class;
7421 unsigned long flags;
7422 int err, ret;
7423
7424 ret = 0;
7425
7426 idx = nfc->fs.location;
7427 if (idx >= tcam_get_size(np))
7428 return -EINVAL;
7429
7430 if (fsp->flow_type == IP_USER_FLOW) {
7431 int i;
7432 int add_usr_cls = 0;
7433 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7434 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7435
7436 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7437 return -EINVAL;
7438
7439 niu_lock_parent(np, flags);
7440
7441 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7442 if (parent->l3_cls[i]) {
7443 if (uspec->proto == parent->l3_cls_pid[i]) {
7444 class = parent->l3_cls[i];
7445 parent->l3_cls_refcnt[i]++;
7446 add_usr_cls = 1;
7447 break;
7448 }
7449 } else {
7450 /* Program new user IP class */
7451 switch (i) {
7452 case 0:
7453 class = CLASS_CODE_USER_PROG1;
7454 break;
7455 case 1:
7456 class = CLASS_CODE_USER_PROG2;
7457 break;
7458 case 2:
7459 class = CLASS_CODE_USER_PROG3;
7460 break;
7461 case 3:
7462 class = CLASS_CODE_USER_PROG4;
7463 break;
7464 default:
7465 class = CLASS_CODE_UNRECOG;
7466 break;
7467 }
7468 ret = tcam_user_ip_class_set(np, class, 0,
7469 uspec->proto,
7470 uspec->tos,
7471 umask->tos);
7472 if (ret)
7473 goto out;
7474
7475 ret = tcam_user_ip_class_enable(np, class, 1);
7476 if (ret)
7477 goto out;
7478 parent->l3_cls[i] = class;
7479 parent->l3_cls_pid[i] = uspec->proto;
7480 parent->l3_cls_refcnt[i]++;
7481 add_usr_cls = 1;
7482 break;
7483 }
7484 }
7485 if (!add_usr_cls) {
7486 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7487 parent->index, __func__, uspec->proto);
7488 ret = -EINVAL;
7489 goto out;
7490 }
7491 niu_unlock_parent(np, flags);
7492 } else {
7493 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7494 return -EINVAL;
7495 }
7496 }
7497
7498 niu_lock_parent(np, flags);
7499
7500 idx = tcam_get_index(np, idx);
7501 tp = &parent->tcam[idx];
7502
7503 memset(tp, 0, sizeof(*tp));
7504
7505 /* fill in the tcam key and mask */
7506 switch (fsp->flow_type) {
7507 case TCP_V4_FLOW:
7508 case UDP_V4_FLOW:
7509 case SCTP_V4_FLOW:
7510 case AH_V4_FLOW:
7511 case ESP_V4_FLOW:
7512 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7513 break;
7514 case TCP_V6_FLOW:
7515 case UDP_V6_FLOW:
7516 case SCTP_V6_FLOW:
7517 case AH_V6_FLOW:
7518 case ESP_V6_FLOW:
7519 /* Not yet implemented */
7520 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7521 parent->index, __func__, fsp->flow_type);
7522 ret = -EINVAL;
7523 goto out;
7524 case IP_USER_FLOW:
7525 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7526 break;
7527 default:
7528 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7529 parent->index, __func__, fsp->flow_type);
7530 ret = -EINVAL;
7531 goto out;
7532 }
7533
7534 /* fill in the assoc data */
7535 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7536 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7537 } else {
7538 if (fsp->ring_cookie >= np->num_rx_rings) {
7539 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7540 parent->index, __func__,
7541 (long long)fsp->ring_cookie);
7542 ret = -EINVAL;
7543 goto out;
7544 }
7545 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7546 (fsp->ring_cookie <<
7547 TCAM_ASSOCDATA_OFFSET_SHIFT));
7548 }
7549
7550 err = tcam_write(np, idx, tp->key, tp->key_mask);
7551 if (err) {
7552 ret = -EINVAL;
7553 goto out;
7554 }
7555 err = tcam_assoc_write(np, idx, tp->assoc_data);
7556 if (err) {
7557 ret = -EINVAL;
7558 goto out;
7559 }
7560
7561 /* validate the entry */
7562 tp->valid = 1;
7563 np->clas.tcam_valid_entries++;
7564 out:
7565 niu_unlock_parent(np, flags);
7566
7567 return ret;
7568 }
7569
7570 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7571 {
7572 struct niu_parent *parent = np->parent;
7573 struct niu_tcam_entry *tp;
7574 u16 idx;
7575 unsigned long flags;
7576 u64 class;
7577 int ret = 0;
7578
7579 if (loc >= tcam_get_size(np))
7580 return -EINVAL;
7581
7582 niu_lock_parent(np, flags);
7583
7584 idx = tcam_get_index(np, loc);
7585 tp = &parent->tcam[idx];
7586
7587 /* if the entry is of a user defined class, then update*/
7588 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7589 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7590
7591 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7592 int i;
7593 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7594 if (parent->l3_cls[i] == class) {
7595 parent->l3_cls_refcnt[i]--;
7596 if (!parent->l3_cls_refcnt[i]) {
7597 /* disable class */
7598 ret = tcam_user_ip_class_enable(np,
7599 class,
7600 0);
7601 if (ret)
7602 goto out;
7603 parent->l3_cls[i] = 0;
7604 parent->l3_cls_pid[i] = 0;
7605 }
7606 break;
7607 }
7608 }
7609 if (i == NIU_L3_PROG_CLS) {
7610 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7611 parent->index, __func__,
7612 (unsigned long long)class);
7613 ret = -EINVAL;
7614 goto out;
7615 }
7616 }
7617
7618 ret = tcam_flush(np, idx);
7619 if (ret)
7620 goto out;
7621
7622 /* invalidate the entry */
7623 tp->valid = 0;
7624 np->clas.tcam_valid_entries--;
7625 out:
7626 niu_unlock_parent(np, flags);
7627
7628 return ret;
7629 }
7630
7631 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7632 {
7633 struct niu *np = netdev_priv(dev);
7634 int ret = 0;
7635
7636 switch (cmd->cmd) {
7637 case ETHTOOL_SRXFH:
7638 ret = niu_set_hash_opts(np, cmd);
7639 break;
7640 case ETHTOOL_SRXCLSRLINS:
7641 ret = niu_add_ethtool_tcam_entry(np, cmd);
7642 break;
7643 case ETHTOOL_SRXCLSRLDEL:
7644 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7645 break;
7646 default:
7647 ret = -EINVAL;
7648 break;
7649 }
7650
7651 return ret;
7652 }
7653
7654 static const struct {
7655 const char string[ETH_GSTRING_LEN];
7656 } niu_xmac_stat_keys[] = {
7657 { "tx_frames" },
7658 { "tx_bytes" },
7659 { "tx_fifo_errors" },
7660 { "tx_overflow_errors" },
7661 { "tx_max_pkt_size_errors" },
7662 { "tx_underflow_errors" },
7663 { "rx_local_faults" },
7664 { "rx_remote_faults" },
7665 { "rx_link_faults" },
7666 { "rx_align_errors" },
7667 { "rx_frags" },
7668 { "rx_mcasts" },
7669 { "rx_bcasts" },
7670 { "rx_hist_cnt1" },
7671 { "rx_hist_cnt2" },
7672 { "rx_hist_cnt3" },
7673 { "rx_hist_cnt4" },
7674 { "rx_hist_cnt5" },
7675 { "rx_hist_cnt6" },
7676 { "rx_hist_cnt7" },
7677 { "rx_octets" },
7678 { "rx_code_violations" },
7679 { "rx_len_errors" },
7680 { "rx_crc_errors" },
7681 { "rx_underflows" },
7682 { "rx_overflows" },
7683 { "pause_off_state" },
7684 { "pause_on_state" },
7685 { "pause_received" },
7686 };
7687
7688 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7689
7690 static const struct {
7691 const char string[ETH_GSTRING_LEN];
7692 } niu_bmac_stat_keys[] = {
7693 { "tx_underflow_errors" },
7694 { "tx_max_pkt_size_errors" },
7695 { "tx_bytes" },
7696 { "tx_frames" },
7697 { "rx_overflows" },
7698 { "rx_frames" },
7699 { "rx_align_errors" },
7700 { "rx_crc_errors" },
7701 { "rx_len_errors" },
7702 { "pause_off_state" },
7703 { "pause_on_state" },
7704 { "pause_received" },
7705 };
7706
7707 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7708
7709 static const struct {
7710 const char string[ETH_GSTRING_LEN];
7711 } niu_rxchan_stat_keys[] = {
7712 { "rx_channel" },
7713 { "rx_packets" },
7714 { "rx_bytes" },
7715 { "rx_dropped" },
7716 { "rx_errors" },
7717 };
7718
7719 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7720
7721 static const struct {
7722 const char string[ETH_GSTRING_LEN];
7723 } niu_txchan_stat_keys[] = {
7724 { "tx_channel" },
7725 { "tx_packets" },
7726 { "tx_bytes" },
7727 { "tx_errors" },
7728 };
7729
7730 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7731
7732 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7733 {
7734 struct niu *np = netdev_priv(dev);
7735 int i;
7736
7737 if (stringset != ETH_SS_STATS)
7738 return;
7739
7740 if (np->flags & NIU_FLAGS_XMAC) {
7741 memcpy(data, niu_xmac_stat_keys,
7742 sizeof(niu_xmac_stat_keys));
7743 data += sizeof(niu_xmac_stat_keys);
7744 } else {
7745 memcpy(data, niu_bmac_stat_keys,
7746 sizeof(niu_bmac_stat_keys));
7747 data += sizeof(niu_bmac_stat_keys);
7748 }
7749 for (i = 0; i < np->num_rx_rings; i++) {
7750 memcpy(data, niu_rxchan_stat_keys,
7751 sizeof(niu_rxchan_stat_keys));
7752 data += sizeof(niu_rxchan_stat_keys);
7753 }
7754 for (i = 0; i < np->num_tx_rings; i++) {
7755 memcpy(data, niu_txchan_stat_keys,
7756 sizeof(niu_txchan_stat_keys));
7757 data += sizeof(niu_txchan_stat_keys);
7758 }
7759 }
7760
7761 static int niu_get_sset_count(struct net_device *dev, int stringset)
7762 {
7763 struct niu *np = netdev_priv(dev);
7764
7765 if (stringset != ETH_SS_STATS)
7766 return -EINVAL;
7767
7768 return (np->flags & NIU_FLAGS_XMAC ?
7769 NUM_XMAC_STAT_KEYS :
7770 NUM_BMAC_STAT_KEYS) +
7771 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7772 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7773 }
7774
7775 static void niu_get_ethtool_stats(struct net_device *dev,
7776 struct ethtool_stats *stats, u64 *data)
7777 {
7778 struct niu *np = netdev_priv(dev);
7779 int i;
7780
7781 niu_sync_mac_stats(np);
7782 if (np->flags & NIU_FLAGS_XMAC) {
7783 memcpy(data, &np->mac_stats.xmac,
7784 sizeof(struct niu_xmac_stats));
7785 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7786 } else {
7787 memcpy(data, &np->mac_stats.bmac,
7788 sizeof(struct niu_bmac_stats));
7789 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7790 }
7791 for (i = 0; i < np->num_rx_rings; i++) {
7792 struct rx_ring_info *rp = &np->rx_rings[i];
7793
7794 niu_sync_rx_discard_stats(np, rp, 0);
7795
7796 data[0] = rp->rx_channel;
7797 data[1] = rp->rx_packets;
7798 data[2] = rp->rx_bytes;
7799 data[3] = rp->rx_dropped;
7800 data[4] = rp->rx_errors;
7801 data += 5;
7802 }
7803 for (i = 0; i < np->num_tx_rings; i++) {
7804 struct tx_ring_info *rp = &np->tx_rings[i];
7805
7806 data[0] = rp->tx_channel;
7807 data[1] = rp->tx_packets;
7808 data[2] = rp->tx_bytes;
7809 data[3] = rp->tx_errors;
7810 data += 4;
7811 }
7812 }
7813
7814 static u64 niu_led_state_save(struct niu *np)
7815 {
7816 if (np->flags & NIU_FLAGS_XMAC)
7817 return nr64_mac(XMAC_CONFIG);
7818 else
7819 return nr64_mac(BMAC_XIF_CONFIG);
7820 }
7821
7822 static void niu_led_state_restore(struct niu *np, u64 val)
7823 {
7824 if (np->flags & NIU_FLAGS_XMAC)
7825 nw64_mac(XMAC_CONFIG, val);
7826 else
7827 nw64_mac(BMAC_XIF_CONFIG, val);
7828 }
7829
7830 static void niu_force_led(struct niu *np, int on)
7831 {
7832 u64 val, reg, bit;
7833
7834 if (np->flags & NIU_FLAGS_XMAC) {
7835 reg = XMAC_CONFIG;
7836 bit = XMAC_CONFIG_FORCE_LED_ON;
7837 } else {
7838 reg = BMAC_XIF_CONFIG;
7839 bit = BMAC_XIF_CONFIG_LINK_LED;
7840 }
7841
7842 val = nr64_mac(reg);
7843 if (on)
7844 val |= bit;
7845 else
7846 val &= ~bit;
7847 nw64_mac(reg, val);
7848 }
7849
7850 static int niu_set_phys_id(struct net_device *dev,
7851 enum ethtool_phys_id_state state)
7852
7853 {
7854 struct niu *np = netdev_priv(dev);
7855
7856 if (!netif_running(dev))
7857 return -EAGAIN;
7858
7859 switch (state) {
7860 case ETHTOOL_ID_ACTIVE:
7861 np->orig_led_state = niu_led_state_save(np);
7862 return 1; /* cycle on/off once per second */
7863
7864 case ETHTOOL_ID_ON:
7865 niu_force_led(np, 1);
7866 break;
7867
7868 case ETHTOOL_ID_OFF:
7869 niu_force_led(np, 0);
7870 break;
7871
7872 case ETHTOOL_ID_INACTIVE:
7873 niu_led_state_restore(np, np->orig_led_state);
7874 }
7875
7876 return 0;
7877 }
7878
7879 static const struct ethtool_ops niu_ethtool_ops = {
7880 .get_drvinfo = niu_get_drvinfo,
7881 .get_link = ethtool_op_get_link,
7882 .get_msglevel = niu_get_msglevel,
7883 .set_msglevel = niu_set_msglevel,
7884 .nway_reset = niu_nway_reset,
7885 .get_eeprom_len = niu_get_eeprom_len,
7886 .get_eeprom = niu_get_eeprom,
7887 .get_strings = niu_get_strings,
7888 .get_sset_count = niu_get_sset_count,
7889 .get_ethtool_stats = niu_get_ethtool_stats,
7890 .set_phys_id = niu_set_phys_id,
7891 .get_rxnfc = niu_get_nfc,
7892 .set_rxnfc = niu_set_nfc,
7893 .get_link_ksettings = niu_get_link_ksettings,
7894 .set_link_ksettings = niu_set_link_ksettings,
7895 };
7896
7897 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7898 int ldg, int ldn)
7899 {
7900 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7901 return -EINVAL;
7902 if (ldn < 0 || ldn > LDN_MAX)
7903 return -EINVAL;
7904
7905 parent->ldg_map[ldn] = ldg;
7906
7907 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7908 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7909 * the firmware, and we're not supposed to change them.
7910 * Validate the mapping, because if it's wrong we probably
7911 * won't get any interrupts and that's painful to debug.
7912 */
7913 if (nr64(LDG_NUM(ldn)) != ldg) {
7914 dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7915 np->port, ldn, ldg,
7916 (unsigned long long) nr64(LDG_NUM(ldn)));
7917 return -EINVAL;
7918 }
7919 } else
7920 nw64(LDG_NUM(ldn), ldg);
7921
7922 return 0;
7923 }
7924
7925 static int niu_set_ldg_timer_res(struct niu *np, int res)
7926 {
7927 if (res < 0 || res > LDG_TIMER_RES_VAL)
7928 return -EINVAL;
7929
7930
7931 nw64(LDG_TIMER_RES, res);
7932
7933 return 0;
7934 }
7935
7936 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7937 {
7938 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7939 (func < 0 || func > 3) ||
7940 (vector < 0 || vector > 0x1f))
7941 return -EINVAL;
7942
7943 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7944
7945 return 0;
7946 }
7947
7948 static int niu_pci_eeprom_read(struct niu *np, u32 addr)
7949 {
7950 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7951 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7952 int limit;
7953
7954 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7955 return -EINVAL;
7956
7957 frame = frame_base;
7958 nw64(ESPC_PIO_STAT, frame);
7959 limit = 64;
7960 do {
7961 udelay(5);
7962 frame = nr64(ESPC_PIO_STAT);
7963 if (frame & ESPC_PIO_STAT_READ_END)
7964 break;
7965 } while (limit--);
7966 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7967 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7968 (unsigned long long) frame);
7969 return -ENODEV;
7970 }
7971
7972 frame = frame_base;
7973 nw64(ESPC_PIO_STAT, frame);
7974 limit = 64;
7975 do {
7976 udelay(5);
7977 frame = nr64(ESPC_PIO_STAT);
7978 if (frame & ESPC_PIO_STAT_READ_END)
7979 break;
7980 } while (limit--);
7981 if (!(frame & ESPC_PIO_STAT_READ_END)) {
7982 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7983 (unsigned long long) frame);
7984 return -ENODEV;
7985 }
7986
7987 frame = nr64(ESPC_PIO_STAT);
7988 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
7989 }
7990
7991 static int niu_pci_eeprom_read16(struct niu *np, u32 off)
7992 {
7993 int err = niu_pci_eeprom_read(np, off);
7994 u16 val;
7995
7996 if (err < 0)
7997 return err;
7998 val = (err << 8);
7999 err = niu_pci_eeprom_read(np, off + 1);
8000 if (err < 0)
8001 return err;
8002 val |= (err & 0xff);
8003
8004 return val;
8005 }
8006
8007 static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8008 {
8009 int err = niu_pci_eeprom_read(np, off);
8010 u16 val;
8011
8012 if (err < 0)
8013 return err;
8014
8015 val = (err & 0xff);
8016 err = niu_pci_eeprom_read(np, off + 1);
8017 if (err < 0)
8018 return err;
8019
8020 val |= (err & 0xff) << 8;
8021
8022 return val;
8023 }
8024
8025 static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
8026 int namebuf_len)
8027 {
8028 int i;
8029
8030 for (i = 0; i < namebuf_len; i++) {
8031 int err = niu_pci_eeprom_read(np, off + i);
8032 if (err < 0)
8033 return err;
8034 *namebuf++ = err;
8035 if (!err)
8036 break;
8037 }
8038 if (i >= namebuf_len)
8039 return -EINVAL;
8040
8041 return i + 1;
8042 }
8043
8044 static void niu_vpd_parse_version(struct niu *np)
8045 {
8046 struct niu_vpd *vpd = &np->vpd;
8047 int len = strlen(vpd->version) + 1;
8048 const char *s = vpd->version;
8049 int i;
8050
8051 for (i = 0; i < len - 5; i++) {
8052 if (!strncmp(s + i, "FCode ", 6))
8053 break;
8054 }
8055 if (i >= len - 5)
8056 return;
8057
8058 s += i + 5;
8059 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8060
8061 netif_printk(np, probe, KERN_DEBUG, np->dev,
8062 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8063 vpd->fcode_major, vpd->fcode_minor);
8064 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8065 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8066 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8067 np->flags |= NIU_FLAGS_VPD_VALID;
8068 }
8069
8070 /* ESPC_PIO_EN_ENABLE must be set */
8071 static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
8072 {
8073 unsigned int found_mask = 0;
8074 #define FOUND_MASK_MODEL 0x00000001
8075 #define FOUND_MASK_BMODEL 0x00000002
8076 #define FOUND_MASK_VERS 0x00000004
8077 #define FOUND_MASK_MAC 0x00000008
8078 #define FOUND_MASK_NMAC 0x00000010
8079 #define FOUND_MASK_PHY 0x00000020
8080 #define FOUND_MASK_ALL 0x0000003f
8081
8082 netif_printk(np, probe, KERN_DEBUG, np->dev,
8083 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8084 while (start < end) {
8085 int len, err, prop_len;
8086 char namebuf[64];
8087 u8 *prop_buf;
8088 int max_len;
8089
8090 if (found_mask == FOUND_MASK_ALL) {
8091 niu_vpd_parse_version(np);
8092 return 1;
8093 }
8094
8095 err = niu_pci_eeprom_read(np, start + 2);
8096 if (err < 0)
8097 return err;
8098 len = err;
8099 start += 3;
8100
8101 prop_len = niu_pci_eeprom_read(np, start + 4);
8102 if (prop_len < 0)
8103 return prop_len;
8104 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8105 if (err < 0)
8106 return err;
8107
8108 prop_buf = NULL;
8109 max_len = 0;
8110 if (!strcmp(namebuf, "model")) {
8111 prop_buf = np->vpd.model;
8112 max_len = NIU_VPD_MODEL_MAX;
8113 found_mask |= FOUND_MASK_MODEL;
8114 } else if (!strcmp(namebuf, "board-model")) {
8115 prop_buf = np->vpd.board_model;
8116 max_len = NIU_VPD_BD_MODEL_MAX;
8117 found_mask |= FOUND_MASK_BMODEL;
8118 } else if (!strcmp(namebuf, "version")) {
8119 prop_buf = np->vpd.version;
8120 max_len = NIU_VPD_VERSION_MAX;
8121 found_mask |= FOUND_MASK_VERS;
8122 } else if (!strcmp(namebuf, "local-mac-address")) {
8123 prop_buf = np->vpd.local_mac;
8124 max_len = ETH_ALEN;
8125 found_mask |= FOUND_MASK_MAC;
8126 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8127 prop_buf = &np->vpd.mac_num;
8128 max_len = 1;
8129 found_mask |= FOUND_MASK_NMAC;
8130 } else if (!strcmp(namebuf, "phy-type")) {
8131 prop_buf = np->vpd.phy_type;
8132 max_len = NIU_VPD_PHY_TYPE_MAX;
8133 found_mask |= FOUND_MASK_PHY;
8134 }
8135
8136 if (max_len && prop_len > max_len) {
8137 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8138 return -EINVAL;
8139 }
8140
8141 if (prop_buf) {
8142 u32 off = start + 5 + err;
8143 int i;
8144
8145 netif_printk(np, probe, KERN_DEBUG, np->dev,
8146 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8147 namebuf, prop_len);
8148 for (i = 0; i < prop_len; i++) {
8149 err = niu_pci_eeprom_read(np, off + i);
8150 if (err >= 0)
8151 *prop_buf = err;
8152 ++prop_buf;
8153 }
8154 }
8155
8156 start += len;
8157 }
8158
8159 return 0;
8160 }
8161
8162 /* ESPC_PIO_EN_ENABLE must be set */
8163 static void niu_pci_vpd_fetch(struct niu *np, u32 start)
8164 {
8165 u32 offset;
8166 int err;
8167
8168 err = niu_pci_eeprom_read16_swp(np, start + 1);
8169 if (err < 0)
8170 return;
8171
8172 offset = err + 3;
8173
8174 while (start + offset < ESPC_EEPROM_SIZE) {
8175 u32 here = start + offset;
8176 u32 end;
8177
8178 err = niu_pci_eeprom_read(np, here);
8179 if (err != 0x90)
8180 return;
8181
8182 err = niu_pci_eeprom_read16_swp(np, here + 1);
8183 if (err < 0)
8184 return;
8185
8186 here = start + offset + 3;
8187 end = start + offset + err;
8188
8189 offset += err;
8190
8191 err = niu_pci_vpd_scan_props(np, here, end);
8192 if (err < 0 || err == 1)
8193 return;
8194 }
8195 }
8196
8197 /* ESPC_PIO_EN_ENABLE must be set */
8198 static u32 niu_pci_vpd_offset(struct niu *np)
8199 {
8200 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8201 int err;
8202
8203 while (start < end) {
8204 ret = start;
8205
8206 /* ROM header signature? */
8207 err = niu_pci_eeprom_read16(np, start + 0);
8208 if (err != 0x55aa)
8209 return 0;
8210
8211 /* Apply offset to PCI data structure. */
8212 err = niu_pci_eeprom_read16(np, start + 23);
8213 if (err < 0)
8214 return 0;
8215 start += err;
8216
8217 /* Check for "PCIR" signature. */
8218 err = niu_pci_eeprom_read16(np, start + 0);
8219 if (err != 0x5043)
8220 return 0;
8221 err = niu_pci_eeprom_read16(np, start + 2);
8222 if (err != 0x4952)
8223 return 0;
8224
8225 /* Check for OBP image type. */
8226 err = niu_pci_eeprom_read(np, start + 20);
8227 if (err < 0)
8228 return 0;
8229 if (err != 0x01) {
8230 err = niu_pci_eeprom_read(np, ret + 2);
8231 if (err < 0)
8232 return 0;
8233
8234 start = ret + (err * 512);
8235 continue;
8236 }
8237
8238 err = niu_pci_eeprom_read16_swp(np, start + 8);
8239 if (err < 0)
8240 return err;
8241 ret += err;
8242
8243 err = niu_pci_eeprom_read(np, ret + 0);
8244 if (err != 0x82)
8245 return 0;
8246
8247 return ret;
8248 }
8249
8250 return 0;
8251 }
8252
8253 static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
8254 {
8255 if (!strcmp(phy_prop, "mif")) {
8256 /* 1G copper, MII */
8257 np->flags &= ~(NIU_FLAGS_FIBER |
8258 NIU_FLAGS_10G);
8259 np->mac_xcvr = MAC_XCVR_MII;
8260 } else if (!strcmp(phy_prop, "xgf")) {
8261 /* 10G fiber, XPCS */
8262 np->flags |= (NIU_FLAGS_10G |
8263 NIU_FLAGS_FIBER);
8264 np->mac_xcvr = MAC_XCVR_XPCS;
8265 } else if (!strcmp(phy_prop, "pcs")) {
8266 /* 1G fiber, PCS */
8267 np->flags &= ~NIU_FLAGS_10G;
8268 np->flags |= NIU_FLAGS_FIBER;
8269 np->mac_xcvr = MAC_XCVR_PCS;
8270 } else if (!strcmp(phy_prop, "xgc")) {
8271 /* 10G copper, XPCS */
8272 np->flags |= NIU_FLAGS_10G;
8273 np->flags &= ~NIU_FLAGS_FIBER;
8274 np->mac_xcvr = MAC_XCVR_XPCS;
8275 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8276 /* 10G Serdes or 1G Serdes, default to 10G */
8277 np->flags |= NIU_FLAGS_10G;
8278 np->flags &= ~NIU_FLAGS_FIBER;
8279 np->flags |= NIU_FLAGS_XCVR_SERDES;
8280 np->mac_xcvr = MAC_XCVR_XPCS;
8281 } else {
8282 return -EINVAL;
8283 }
8284 return 0;
8285 }
8286
8287 static int niu_pci_vpd_get_nports(struct niu *np)
8288 {
8289 int ports = 0;
8290
8291 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8292 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8293 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8294 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8295 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8296 ports = 4;
8297 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8298 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8299 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8300 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8301 ports = 2;
8302 }
8303
8304 return ports;
8305 }
8306
8307 static void niu_pci_vpd_validate(struct niu *np)
8308 {
8309 struct net_device *dev = np->dev;
8310 struct niu_vpd *vpd = &np->vpd;
8311 u8 val8;
8312
8313 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8314 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8315
8316 np->flags &= ~NIU_FLAGS_VPD_VALID;
8317 return;
8318 }
8319
8320 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8321 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8322 np->flags |= NIU_FLAGS_10G;
8323 np->flags &= ~NIU_FLAGS_FIBER;
8324 np->flags |= NIU_FLAGS_XCVR_SERDES;
8325 np->mac_xcvr = MAC_XCVR_PCS;
8326 if (np->port > 1) {
8327 np->flags |= NIU_FLAGS_FIBER;
8328 np->flags &= ~NIU_FLAGS_10G;
8329 }
8330 if (np->flags & NIU_FLAGS_10G)
8331 np->mac_xcvr = MAC_XCVR_XPCS;
8332 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8333 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8334 NIU_FLAGS_HOTPLUG_PHY);
8335 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8336 dev_err(np->device, "Illegal phy string [%s]\n",
8337 np->vpd.phy_type);
8338 dev_err(np->device, "Falling back to SPROM\n");
8339 np->flags &= ~NIU_FLAGS_VPD_VALID;
8340 return;
8341 }
8342
8343 memcpy(dev->dev_addr, vpd->local_mac, ETH_ALEN);
8344
8345 val8 = dev->dev_addr[5];
8346 dev->dev_addr[5] += np->port;
8347 if (dev->dev_addr[5] < val8)
8348 dev->dev_addr[4]++;
8349 }
8350
8351 static int niu_pci_probe_sprom(struct niu *np)
8352 {
8353 struct net_device *dev = np->dev;
8354 int len, i;
8355 u64 val, sum;
8356 u8 val8;
8357
8358 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8359 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8360 len = val / 4;
8361
8362 np->eeprom_len = len;
8363
8364 netif_printk(np, probe, KERN_DEBUG, np->dev,
8365 "SPROM: Image size %llu\n", (unsigned long long)val);
8366
8367 sum = 0;
8368 for (i = 0; i < len; i++) {
8369 val = nr64(ESPC_NCR(i));
8370 sum += (val >> 0) & 0xff;
8371 sum += (val >> 8) & 0xff;
8372 sum += (val >> 16) & 0xff;
8373 sum += (val >> 24) & 0xff;
8374 }
8375 netif_printk(np, probe, KERN_DEBUG, np->dev,
8376 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8377 if ((sum & 0xff) != 0xab) {
8378 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8379 return -EINVAL;
8380 }
8381
8382 val = nr64(ESPC_PHY_TYPE);
8383 switch (np->port) {
8384 case 0:
8385 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8386 ESPC_PHY_TYPE_PORT0_SHIFT;
8387 break;
8388 case 1:
8389 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8390 ESPC_PHY_TYPE_PORT1_SHIFT;
8391 break;
8392 case 2:
8393 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8394 ESPC_PHY_TYPE_PORT2_SHIFT;
8395 break;
8396 case 3:
8397 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8398 ESPC_PHY_TYPE_PORT3_SHIFT;
8399 break;
8400 default:
8401 dev_err(np->device, "Bogus port number %u\n",
8402 np->port);
8403 return -EINVAL;
8404 }
8405 netif_printk(np, probe, KERN_DEBUG, np->dev,
8406 "SPROM: PHY type %x\n", val8);
8407
8408 switch (val8) {
8409 case ESPC_PHY_TYPE_1G_COPPER:
8410 /* 1G copper, MII */
8411 np->flags &= ~(NIU_FLAGS_FIBER |
8412 NIU_FLAGS_10G);
8413 np->mac_xcvr = MAC_XCVR_MII;
8414 break;
8415
8416 case ESPC_PHY_TYPE_1G_FIBER:
8417 /* 1G fiber, PCS */
8418 np->flags &= ~NIU_FLAGS_10G;
8419 np->flags |= NIU_FLAGS_FIBER;
8420 np->mac_xcvr = MAC_XCVR_PCS;
8421 break;
8422
8423 case ESPC_PHY_TYPE_10G_COPPER:
8424 /* 10G copper, XPCS */
8425 np->flags |= NIU_FLAGS_10G;
8426 np->flags &= ~NIU_FLAGS_FIBER;
8427 np->mac_xcvr = MAC_XCVR_XPCS;
8428 break;
8429
8430 case ESPC_PHY_TYPE_10G_FIBER:
8431 /* 10G fiber, XPCS */
8432 np->flags |= (NIU_FLAGS_10G |
8433 NIU_FLAGS_FIBER);
8434 np->mac_xcvr = MAC_XCVR_XPCS;
8435 break;
8436
8437 default:
8438 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8439 return -EINVAL;
8440 }
8441
8442 val = nr64(ESPC_MAC_ADDR0);
8443 netif_printk(np, probe, KERN_DEBUG, np->dev,
8444 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8445 dev->dev_addr[0] = (val >> 0) & 0xff;
8446 dev->dev_addr[1] = (val >> 8) & 0xff;
8447 dev->dev_addr[2] = (val >> 16) & 0xff;
8448 dev->dev_addr[3] = (val >> 24) & 0xff;
8449
8450 val = nr64(ESPC_MAC_ADDR1);
8451 netif_printk(np, probe, KERN_DEBUG, np->dev,
8452 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8453 dev->dev_addr[4] = (val >> 0) & 0xff;
8454 dev->dev_addr[5] = (val >> 8) & 0xff;
8455
8456 if (!is_valid_ether_addr(&dev->dev_addr[0])) {
8457 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8458 dev->dev_addr);
8459 return -EINVAL;
8460 }
8461
8462 val8 = dev->dev_addr[5];
8463 dev->dev_addr[5] += np->port;
8464 if (dev->dev_addr[5] < val8)
8465 dev->dev_addr[4]++;
8466
8467 val = nr64(ESPC_MOD_STR_LEN);
8468 netif_printk(np, probe, KERN_DEBUG, np->dev,
8469 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8470 if (val >= 8 * 4)
8471 return -EINVAL;
8472
8473 for (i = 0; i < val; i += 4) {
8474 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8475
8476 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8477 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8478 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8479 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8480 }
8481 np->vpd.model[val] = '\0';
8482
8483 val = nr64(ESPC_BD_MOD_STR_LEN);
8484 netif_printk(np, probe, KERN_DEBUG, np->dev,
8485 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8486 if (val >= 4 * 4)
8487 return -EINVAL;
8488
8489 for (i = 0; i < val; i += 4) {
8490 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8491
8492 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8493 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8494 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8495 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8496 }
8497 np->vpd.board_model[val] = '\0';
8498
8499 np->vpd.mac_num =
8500 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8501 netif_printk(np, probe, KERN_DEBUG, np->dev,
8502 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8503
8504 return 0;
8505 }
8506
8507 static int niu_get_and_validate_port(struct niu *np)
8508 {
8509 struct niu_parent *parent = np->parent;
8510
8511 if (np->port <= 1)
8512 np->flags |= NIU_FLAGS_XMAC;
8513
8514 if (!parent->num_ports) {
8515 if (parent->plat_type == PLAT_TYPE_NIU) {
8516 parent->num_ports = 2;
8517 } else {
8518 parent->num_ports = niu_pci_vpd_get_nports(np);
8519 if (!parent->num_ports) {
8520 /* Fall back to SPROM as last resort.
8521 * This will fail on most cards.
8522 */
8523 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8524 ESPC_NUM_PORTS_MACS_VAL;
8525
8526 /* All of the current probing methods fail on
8527 * Maramba on-board parts.
8528 */
8529 if (!parent->num_ports)
8530 parent->num_ports = 4;
8531 }
8532 }
8533 }
8534
8535 if (np->port >= parent->num_ports)
8536 return -ENODEV;
8537
8538 return 0;
8539 }
8540
8541 static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
8542 int dev_id_1, int dev_id_2, u8 phy_port, int type)
8543 {
8544 u32 id = (dev_id_1 << 16) | dev_id_2;
8545 u8 idx;
8546
8547 if (dev_id_1 < 0 || dev_id_2 < 0)
8548 return 0;
8549 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8550 /* Because of the NIU_PHY_ID_MASK being applied, the 8704
8551 * test covers the 8706 as well.
8552 */
8553 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8554 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8555 return 0;
8556 } else {
8557 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8558 return 0;
8559 }
8560
8561 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8562 parent->index, id,
8563 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8564 type == PHY_TYPE_PCS ? "PCS" : "MII",
8565 phy_port);
8566
8567 if (p->cur[type] >= NIU_MAX_PORTS) {
8568 pr_err("Too many PHY ports\n");
8569 return -EINVAL;
8570 }
8571 idx = p->cur[type];
8572 p->phy_id[type][idx] = id;
8573 p->phy_port[type][idx] = phy_port;
8574 p->cur[type] = idx + 1;
8575 return 0;
8576 }
8577
8578 static int port_has_10g(struct phy_probe_info *p, int port)
8579 {
8580 int i;
8581
8582 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8583 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8584 return 1;
8585 }
8586 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8587 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8588 return 1;
8589 }
8590
8591 return 0;
8592 }
8593
8594 static int count_10g_ports(struct phy_probe_info *p, int *lowest)
8595 {
8596 int port, cnt;
8597
8598 cnt = 0;
8599 *lowest = 32;
8600 for (port = 8; port < 32; port++) {
8601 if (port_has_10g(p, port)) {
8602 if (!cnt)
8603 *lowest = port;
8604 cnt++;
8605 }
8606 }
8607
8608 return cnt;
8609 }
8610
8611 static int count_1g_ports(struct phy_probe_info *p, int *lowest)
8612 {
8613 *lowest = 32;
8614 if (p->cur[PHY_TYPE_MII])
8615 *lowest = p->phy_port[PHY_TYPE_MII][0];
8616
8617 return p->cur[PHY_TYPE_MII];
8618 }
8619
8620 static void niu_n2_divide_channels(struct niu_parent *parent)
8621 {
8622 int num_ports = parent->num_ports;
8623 int i;
8624
8625 for (i = 0; i < num_ports; i++) {
8626 parent->rxchan_per_port[i] = (16 / num_ports);
8627 parent->txchan_per_port[i] = (16 / num_ports);
8628
8629 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8630 parent->index, i,
8631 parent->rxchan_per_port[i],
8632 parent->txchan_per_port[i]);
8633 }
8634 }
8635
8636 static void niu_divide_channels(struct niu_parent *parent,
8637 int num_10g, int num_1g)
8638 {
8639 int num_ports = parent->num_ports;
8640 int rx_chans_per_10g, rx_chans_per_1g;
8641 int tx_chans_per_10g, tx_chans_per_1g;
8642 int i, tot_rx, tot_tx;
8643
8644 if (!num_10g || !num_1g) {
8645 rx_chans_per_10g = rx_chans_per_1g =
8646 (NIU_NUM_RXCHAN / num_ports);
8647 tx_chans_per_10g = tx_chans_per_1g =
8648 (NIU_NUM_TXCHAN / num_ports);
8649 } else {
8650 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8651 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8652 (rx_chans_per_1g * num_1g)) /
8653 num_10g;
8654
8655 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8656 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8657 (tx_chans_per_1g * num_1g)) /
8658 num_10g;
8659 }
8660
8661 tot_rx = tot_tx = 0;
8662 for (i = 0; i < num_ports; i++) {
8663 int type = phy_decode(parent->port_phy, i);
8664
8665 if (type == PORT_TYPE_10G) {
8666 parent->rxchan_per_port[i] = rx_chans_per_10g;
8667 parent->txchan_per_port[i] = tx_chans_per_10g;
8668 } else {
8669 parent->rxchan_per_port[i] = rx_chans_per_1g;
8670 parent->txchan_per_port[i] = tx_chans_per_1g;
8671 }
8672 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8673 parent->index, i,
8674 parent->rxchan_per_port[i],
8675 parent->txchan_per_port[i]);
8676 tot_rx += parent->rxchan_per_port[i];
8677 tot_tx += parent->txchan_per_port[i];
8678 }
8679
8680 if (tot_rx > NIU_NUM_RXCHAN) {
8681 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8682 parent->index, tot_rx);
8683 for (i = 0; i < num_ports; i++)
8684 parent->rxchan_per_port[i] = 1;
8685 }
8686 if (tot_tx > NIU_NUM_TXCHAN) {
8687 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8688 parent->index, tot_tx);
8689 for (i = 0; i < num_ports; i++)
8690 parent->txchan_per_port[i] = 1;
8691 }
8692 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8693 pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8694 parent->index, tot_rx, tot_tx);
8695 }
8696 }
8697
8698 static void niu_divide_rdc_groups(struct niu_parent *parent,
8699 int num_10g, int num_1g)
8700 {
8701 int i, num_ports = parent->num_ports;
8702 int rdc_group, rdc_groups_per_port;
8703 int rdc_channel_base;
8704
8705 rdc_group = 0;
8706 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8707
8708 rdc_channel_base = 0;
8709
8710 for (i = 0; i < num_ports; i++) {
8711 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8712 int grp, num_channels = parent->rxchan_per_port[i];
8713 int this_channel_offset;
8714
8715 tp->first_table_num = rdc_group;
8716 tp->num_tables = rdc_groups_per_port;
8717 this_channel_offset = 0;
8718 for (grp = 0; grp < tp->num_tables; grp++) {
8719 struct rdc_table *rt = &tp->tables[grp];
8720 int slot;
8721
8722 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8723 parent->index, i, tp->first_table_num + grp);
8724 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8725 rt->rxdma_channel[slot] =
8726 rdc_channel_base + this_channel_offset;
8727
8728 pr_cont("%d ", rt->rxdma_channel[slot]);
8729
8730 if (++this_channel_offset == num_channels)
8731 this_channel_offset = 0;
8732 }
8733 pr_cont("]\n");
8734 }
8735
8736 parent->rdc_default[i] = rdc_channel_base;
8737
8738 rdc_channel_base += num_channels;
8739 rdc_group += rdc_groups_per_port;
8740 }
8741 }
8742
8743 static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
8744 struct phy_probe_info *info)
8745 {
8746 unsigned long flags;
8747 int port, err;
8748
8749 memset(info, 0, sizeof(*info));
8750
8751 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8752 niu_lock_parent(np, flags);
8753 err = 0;
8754 for (port = 8; port < 32; port++) {
8755 int dev_id_1, dev_id_2;
8756
8757 dev_id_1 = mdio_read(np, port,
8758 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8759 dev_id_2 = mdio_read(np, port,
8760 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8761 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8762 PHY_TYPE_PMA_PMD);
8763 if (err)
8764 break;
8765 dev_id_1 = mdio_read(np, port,
8766 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8767 dev_id_2 = mdio_read(np, port,
8768 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8769 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8770 PHY_TYPE_PCS);
8771 if (err)
8772 break;
8773 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8774 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8775 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8776 PHY_TYPE_MII);
8777 if (err)
8778 break;
8779 }
8780 niu_unlock_parent(np, flags);
8781
8782 return err;
8783 }
8784
8785 static int walk_phys(struct niu *np, struct niu_parent *parent)
8786 {
8787 struct phy_probe_info *info = &parent->phy_probe_info;
8788 int lowest_10g, lowest_1g;
8789 int num_10g, num_1g;
8790 u32 val;
8791 int err;
8792
8793 num_10g = num_1g = 0;
8794
8795 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8796 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8797 num_10g = 0;
8798 num_1g = 2;
8799 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8800 parent->num_ports = 4;
8801 val = (phy_encode(PORT_TYPE_1G, 0) |
8802 phy_encode(PORT_TYPE_1G, 1) |
8803 phy_encode(PORT_TYPE_1G, 2) |
8804 phy_encode(PORT_TYPE_1G, 3));
8805 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8806 num_10g = 2;
8807 num_1g = 0;
8808 parent->num_ports = 2;
8809 val = (phy_encode(PORT_TYPE_10G, 0) |
8810 phy_encode(PORT_TYPE_10G, 1));
8811 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8812 (parent->plat_type == PLAT_TYPE_NIU)) {
8813 /* this is the Monza case */
8814 if (np->flags & NIU_FLAGS_10G) {
8815 val = (phy_encode(PORT_TYPE_10G, 0) |
8816 phy_encode(PORT_TYPE_10G, 1));
8817 } else {
8818 val = (phy_encode(PORT_TYPE_1G, 0) |
8819 phy_encode(PORT_TYPE_1G, 1));
8820 }
8821 } else {
8822 err = fill_phy_probe_info(np, parent, info);
8823 if (err)
8824 return err;
8825
8826 num_10g = count_10g_ports(info, &lowest_10g);
8827 num_1g = count_1g_ports(info, &lowest_1g);
8828
8829 switch ((num_10g << 4) | num_1g) {
8830 case 0x24:
8831 if (lowest_1g == 10)
8832 parent->plat_type = PLAT_TYPE_VF_P0;
8833 else if (lowest_1g == 26)
8834 parent->plat_type = PLAT_TYPE_VF_P1;
8835 else
8836 goto unknown_vg_1g_port;
8837
8838 /* fallthru */
8839 case 0x22:
8840 val = (phy_encode(PORT_TYPE_10G, 0) |
8841 phy_encode(PORT_TYPE_10G, 1) |
8842 phy_encode(PORT_TYPE_1G, 2) |
8843 phy_encode(PORT_TYPE_1G, 3));
8844 break;
8845
8846 case 0x20:
8847 val = (phy_encode(PORT_TYPE_10G, 0) |
8848 phy_encode(PORT_TYPE_10G, 1));
8849 break;
8850
8851 case 0x10:
8852 val = phy_encode(PORT_TYPE_10G, np->port);
8853 break;
8854
8855 case 0x14:
8856 if (lowest_1g == 10)
8857 parent->plat_type = PLAT_TYPE_VF_P0;
8858 else if (lowest_1g == 26)
8859 parent->plat_type = PLAT_TYPE_VF_P1;
8860 else
8861 goto unknown_vg_1g_port;
8862
8863 /* fallthru */
8864 case 0x13:
8865 if ((lowest_10g & 0x7) == 0)
8866 val = (phy_encode(PORT_TYPE_10G, 0) |
8867 phy_encode(PORT_TYPE_1G, 1) |
8868 phy_encode(PORT_TYPE_1G, 2) |
8869 phy_encode(PORT_TYPE_1G, 3));
8870 else
8871 val = (phy_encode(PORT_TYPE_1G, 0) |
8872 phy_encode(PORT_TYPE_10G, 1) |
8873 phy_encode(PORT_TYPE_1G, 2) |
8874 phy_encode(PORT_TYPE_1G, 3));
8875 break;
8876
8877 case 0x04:
8878 if (lowest_1g == 10)
8879 parent->plat_type = PLAT_TYPE_VF_P0;
8880 else if (lowest_1g == 26)
8881 parent->plat_type = PLAT_TYPE_VF_P1;
8882 else
8883 goto unknown_vg_1g_port;
8884
8885 val = (phy_encode(PORT_TYPE_1G, 0) |
8886 phy_encode(PORT_TYPE_1G, 1) |
8887 phy_encode(PORT_TYPE_1G, 2) |
8888 phy_encode(PORT_TYPE_1G, 3));
8889 break;
8890
8891 default:
8892 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8893 num_10g, num_1g);
8894 return -EINVAL;
8895 }
8896 }
8897
8898 parent->port_phy = val;
8899
8900 if (parent->plat_type == PLAT_TYPE_NIU)
8901 niu_n2_divide_channels(parent);
8902 else
8903 niu_divide_channels(parent, num_10g, num_1g);
8904
8905 niu_divide_rdc_groups(parent, num_10g, num_1g);
8906
8907 return 0;
8908
8909 unknown_vg_1g_port:
8910 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8911 return -EINVAL;
8912 }
8913
8914 static int niu_probe_ports(struct niu *np)
8915 {
8916 struct niu_parent *parent = np->parent;
8917 int err, i;
8918
8919 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8920 err = walk_phys(np, parent);
8921 if (err)
8922 return err;
8923
8924 niu_set_ldg_timer_res(np, 2);
8925 for (i = 0; i <= LDN_MAX; i++)
8926 niu_ldn_irq_enable(np, i, 0);
8927 }
8928
8929 if (parent->port_phy == PORT_PHY_INVALID)
8930 return -EINVAL;
8931
8932 return 0;
8933 }
8934
8935 static int niu_classifier_swstate_init(struct niu *np)
8936 {
8937 struct niu_classifier *cp = &np->clas;
8938
8939 cp->tcam_top = (u16) np->port;
8940 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8941 cp->h1_init = 0xffffffff;
8942 cp->h2_init = 0xffff;
8943
8944 return fflp_early_init(np);
8945 }
8946
8947 static void niu_link_config_init(struct niu *np)
8948 {
8949 struct niu_link_config *lp = &np->link_config;
8950
8951 lp->advertising = (ADVERTISED_10baseT_Half |
8952 ADVERTISED_10baseT_Full |
8953 ADVERTISED_100baseT_Half |
8954 ADVERTISED_100baseT_Full |
8955 ADVERTISED_1000baseT_Half |
8956 ADVERTISED_1000baseT_Full |
8957 ADVERTISED_10000baseT_Full |
8958 ADVERTISED_Autoneg);
8959 lp->speed = lp->active_speed = SPEED_INVALID;
8960 lp->duplex = DUPLEX_FULL;
8961 lp->active_duplex = DUPLEX_INVALID;
8962 lp->autoneg = 1;
8963 #if 0
8964 lp->loopback_mode = LOOPBACK_MAC;
8965 lp->active_speed = SPEED_10000;
8966 lp->active_duplex = DUPLEX_FULL;
8967 #else
8968 lp->loopback_mode = LOOPBACK_DISABLED;
8969 #endif
8970 }
8971
8972 static int niu_init_mac_ipp_pcs_base(struct niu *np)
8973 {
8974 switch (np->port) {
8975 case 0:
8976 np->mac_regs = np->regs + XMAC_PORT0_OFF;
8977 np->ipp_off = 0x00000;
8978 np->pcs_off = 0x04000;
8979 np->xpcs_off = 0x02000;
8980 break;
8981
8982 case 1:
8983 np->mac_regs = np->regs + XMAC_PORT1_OFF;
8984 np->ipp_off = 0x08000;
8985 np->pcs_off = 0x0a000;
8986 np->xpcs_off = 0x08000;
8987 break;
8988
8989 case 2:
8990 np->mac_regs = np->regs + BMAC_PORT2_OFF;
8991 np->ipp_off = 0x04000;
8992 np->pcs_off = 0x0e000;
8993 np->xpcs_off = ~0UL;
8994 break;
8995
8996 case 3:
8997 np->mac_regs = np->regs + BMAC_PORT3_OFF;
8998 np->ipp_off = 0x0c000;
8999 np->pcs_off = 0x12000;
9000 np->xpcs_off = ~0UL;
9001 break;
9002
9003 default:
9004 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9005 return -EINVAL;
9006 }
9007
9008 return 0;
9009 }
9010
9011 static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
9012 {
9013 struct msix_entry msi_vec[NIU_NUM_LDG];
9014 struct niu_parent *parent = np->parent;
9015 struct pci_dev *pdev = np->pdev;
9016 int i, num_irqs;
9017 u8 first_ldg;
9018
9019 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9020 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9021 ldg_num_map[i] = first_ldg + i;
9022
9023 num_irqs = (parent->rxchan_per_port[np->port] +
9024 parent->txchan_per_port[np->port] +
9025 (np->port == 0 ? 3 : 1));
9026 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9027
9028 for (i = 0; i < num_irqs; i++) {
9029 msi_vec[i].vector = 0;
9030 msi_vec[i].entry = i;
9031 }
9032
9033 num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
9034 if (num_irqs < 0) {
9035 np->flags &= ~NIU_FLAGS_MSIX;
9036 return;
9037 }
9038
9039 np->flags |= NIU_FLAGS_MSIX;
9040 for (i = 0; i < num_irqs; i++)
9041 np->ldg[i].irq = msi_vec[i].vector;
9042 np->num_ldg = num_irqs;
9043 }
9044
9045 static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9046 {
9047 #ifdef CONFIG_SPARC64
9048 struct platform_device *op = np->op;
9049 const u32 *int_prop;
9050 int i;
9051
9052 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9053 if (!int_prop)
9054 return -ENODEV;
9055
9056 for (i = 0; i < op->archdata.num_irqs; i++) {
9057 ldg_num_map[i] = int_prop[i];
9058 np->ldg[i].irq = op->archdata.irqs[i];
9059 }
9060
9061 np->num_ldg = op->archdata.num_irqs;
9062
9063 return 0;
9064 #else
9065 return -EINVAL;
9066 #endif
9067 }
9068
9069 static int niu_ldg_init(struct niu *np)
9070 {
9071 struct niu_parent *parent = np->parent;
9072 u8 ldg_num_map[NIU_NUM_LDG];
9073 int first_chan, num_chan;
9074 int i, err, ldg_rotor;
9075 u8 port;
9076
9077 np->num_ldg = 1;
9078 np->ldg[0].irq = np->dev->irq;
9079 if (parent->plat_type == PLAT_TYPE_NIU) {
9080 err = niu_n2_irq_init(np, ldg_num_map);
9081 if (err)
9082 return err;
9083 } else
9084 niu_try_msix(np, ldg_num_map);
9085
9086 port = np->port;
9087 for (i = 0; i < np->num_ldg; i++) {
9088 struct niu_ldg *lp = &np->ldg[i];
9089
9090 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9091
9092 lp->np = np;
9093 lp->ldg_num = ldg_num_map[i];
9094 lp->timer = 2; /* XXX */
9095
9096 /* On N2 NIU the firmware has setup the SID mappings so they go
9097 * to the correct values that will route the LDG to the proper
9098 * interrupt in the NCU interrupt table.
9099 */
9100 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9101 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9102 if (err)
9103 return err;
9104 }
9105 }
9106
9107 /* We adopt the LDG assignment ordering used by the N2 NIU
9108 * 'interrupt' properties because that simplifies a lot of
9109 * things. This ordering is:
9110 *
9111 * MAC
9112 * MIF (if port zero)
9113 * SYSERR (if port zero)
9114 * RX channels
9115 * TX channels
9116 */
9117
9118 ldg_rotor = 0;
9119
9120 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9121 LDN_MAC(port));
9122 if (err)
9123 return err;
9124
9125 ldg_rotor++;
9126 if (ldg_rotor == np->num_ldg)
9127 ldg_rotor = 0;
9128
9129 if (port == 0) {
9130 err = niu_ldg_assign_ldn(np, parent,
9131 ldg_num_map[ldg_rotor],
9132 LDN_MIF);
9133 if (err)
9134 return err;
9135
9136 ldg_rotor++;
9137 if (ldg_rotor == np->num_ldg)
9138 ldg_rotor = 0;
9139
9140 err = niu_ldg_assign_ldn(np, parent,
9141 ldg_num_map[ldg_rotor],
9142 LDN_DEVICE_ERROR);
9143 if (err)
9144 return err;
9145
9146 ldg_rotor++;
9147 if (ldg_rotor == np->num_ldg)
9148 ldg_rotor = 0;
9149
9150 }
9151
9152 first_chan = 0;
9153 for (i = 0; i < port; i++)
9154 first_chan += parent->rxchan_per_port[i];
9155 num_chan = parent->rxchan_per_port[port];
9156
9157 for (i = first_chan; i < (first_chan + num_chan); i++) {
9158 err = niu_ldg_assign_ldn(np, parent,
9159 ldg_num_map[ldg_rotor],
9160 LDN_RXDMA(i));
9161 if (err)
9162 return err;
9163 ldg_rotor++;
9164 if (ldg_rotor == np->num_ldg)
9165 ldg_rotor = 0;
9166 }
9167
9168 first_chan = 0;
9169 for (i = 0; i < port; i++)
9170 first_chan += parent->txchan_per_port[i];
9171 num_chan = parent->txchan_per_port[port];
9172 for (i = first_chan; i < (first_chan + num_chan); i++) {
9173 err = niu_ldg_assign_ldn(np, parent,
9174 ldg_num_map[ldg_rotor],
9175 LDN_TXDMA(i));
9176 if (err)
9177 return err;
9178 ldg_rotor++;
9179 if (ldg_rotor == np->num_ldg)
9180 ldg_rotor = 0;
9181 }
9182
9183 return 0;
9184 }
9185
9186 static void niu_ldg_free(struct niu *np)
9187 {
9188 if (np->flags & NIU_FLAGS_MSIX)
9189 pci_disable_msix(np->pdev);
9190 }
9191
9192 static int niu_get_of_props(struct niu *np)
9193 {
9194 #ifdef CONFIG_SPARC64
9195 struct net_device *dev = np->dev;
9196 struct device_node *dp;
9197 const char *phy_type;
9198 const u8 *mac_addr;
9199 const char *model;
9200 int prop_len;
9201
9202 if (np->parent->plat_type == PLAT_TYPE_NIU)
9203 dp = np->op->dev.of_node;
9204 else
9205 dp = pci_device_to_OF_node(np->pdev);
9206
9207 phy_type = of_get_property(dp, "phy-type", &prop_len);
9208 if (!phy_type) {
9209 netdev_err(dev, "%pOF: OF node lacks phy-type property\n", dp);
9210 return -EINVAL;
9211 }
9212
9213 if (!strcmp(phy_type, "none"))
9214 return -ENODEV;
9215
9216 strcpy(np->vpd.phy_type, phy_type);
9217
9218 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9219 netdev_err(dev, "%pOF: Illegal phy string [%s]\n",
9220 dp, np->vpd.phy_type);
9221 return -EINVAL;
9222 }
9223
9224 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9225 if (!mac_addr) {
9226 netdev_err(dev, "%pOF: OF node lacks local-mac-address property\n",
9227 dp);
9228 return -EINVAL;
9229 }
9230 if (prop_len != dev->addr_len) {
9231 netdev_err(dev, "%pOF: OF MAC address prop len (%d) is wrong\n",
9232 dp, prop_len);
9233 }
9234 memcpy(dev->dev_addr, mac_addr, dev->addr_len);
9235 if (!is_valid_ether_addr(&dev->dev_addr[0])) {
9236 netdev_err(dev, "%pOF: OF MAC address is invalid\n", dp);
9237 netdev_err(dev, "%pOF: [ %pM ]\n", dp, dev->dev_addr);
9238 return -EINVAL;
9239 }
9240
9241 model = of_get_property(dp, "model", &prop_len);
9242
9243 if (model)
9244 strcpy(np->vpd.model, model);
9245
9246 if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9247 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9248 NIU_FLAGS_HOTPLUG_PHY);
9249 }
9250
9251 return 0;
9252 #else
9253 return -EINVAL;
9254 #endif
9255 }
9256
9257 static int niu_get_invariants(struct niu *np)
9258 {
9259 int err, have_props;
9260 u32 offset;
9261
9262 err = niu_get_of_props(np);
9263 if (err == -ENODEV)
9264 return err;
9265
9266 have_props = !err;
9267
9268 err = niu_init_mac_ipp_pcs_base(np);
9269 if (err)
9270 return err;
9271
9272 if (have_props) {
9273 err = niu_get_and_validate_port(np);
9274 if (err)
9275 return err;
9276
9277 } else {
9278 if (np->parent->plat_type == PLAT_TYPE_NIU)
9279 return -EINVAL;
9280
9281 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9282 offset = niu_pci_vpd_offset(np);
9283 netif_printk(np, probe, KERN_DEBUG, np->dev,
9284 "%s() VPD offset [%08x]\n", __func__, offset);
9285 if (offset)
9286 niu_pci_vpd_fetch(np, offset);
9287 nw64(ESPC_PIO_EN, 0);
9288
9289 if (np->flags & NIU_FLAGS_VPD_VALID) {
9290 niu_pci_vpd_validate(np);
9291 err = niu_get_and_validate_port(np);
9292 if (err)
9293 return err;
9294 }
9295
9296 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9297 err = niu_get_and_validate_port(np);
9298 if (err)
9299 return err;
9300 err = niu_pci_probe_sprom(np);
9301 if (err)
9302 return err;
9303 }
9304 }
9305
9306 err = niu_probe_ports(np);
9307 if (err)
9308 return err;
9309
9310 niu_ldg_init(np);
9311
9312 niu_classifier_swstate_init(np);
9313 niu_link_config_init(np);
9314
9315 err = niu_determine_phy_disposition(np);
9316 if (!err)
9317 err = niu_init_link(np);
9318
9319 return err;
9320 }
9321
9322 static LIST_HEAD(niu_parent_list);
9323 static DEFINE_MUTEX(niu_parent_lock);
9324 static int niu_parent_index;
9325
9326 static ssize_t show_port_phy(struct device *dev,
9327 struct device_attribute *attr, char *buf)
9328 {
9329 struct platform_device *plat_dev = to_platform_device(dev);
9330 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9331 u32 port_phy = p->port_phy;
9332 char *orig_buf = buf;
9333 int i;
9334
9335 if (port_phy == PORT_PHY_UNKNOWN ||
9336 port_phy == PORT_PHY_INVALID)
9337 return 0;
9338
9339 for (i = 0; i < p->num_ports; i++) {
9340 const char *type_str;
9341 int type;
9342
9343 type = phy_decode(port_phy, i);
9344 if (type == PORT_TYPE_10G)
9345 type_str = "10G";
9346 else
9347 type_str = "1G";
9348 buf += sprintf(buf,
9349 (i == 0) ? "%s" : " %s",
9350 type_str);
9351 }
9352 buf += sprintf(buf, "\n");
9353 return buf - orig_buf;
9354 }
9355
9356 static ssize_t show_plat_type(struct device *dev,
9357 struct device_attribute *attr, char *buf)
9358 {
9359 struct platform_device *plat_dev = to_platform_device(dev);
9360 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9361 const char *type_str;
9362
9363 switch (p->plat_type) {
9364 case PLAT_TYPE_ATLAS:
9365 type_str = "atlas";
9366 break;
9367 case PLAT_TYPE_NIU:
9368 type_str = "niu";
9369 break;
9370 case PLAT_TYPE_VF_P0:
9371 type_str = "vf_p0";
9372 break;
9373 case PLAT_TYPE_VF_P1:
9374 type_str = "vf_p1";
9375 break;
9376 default:
9377 type_str = "unknown";
9378 break;
9379 }
9380
9381 return sprintf(buf, "%s\n", type_str);
9382 }
9383
9384 static ssize_t __show_chan_per_port(struct device *dev,
9385 struct device_attribute *attr, char *buf,
9386 int rx)
9387 {
9388 struct platform_device *plat_dev = to_platform_device(dev);
9389 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9390 char *orig_buf = buf;
9391 u8 *arr;
9392 int i;
9393
9394 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9395
9396 for (i = 0; i < p->num_ports; i++) {
9397 buf += sprintf(buf,
9398 (i == 0) ? "%d" : " %d",
9399 arr[i]);
9400 }
9401 buf += sprintf(buf, "\n");
9402
9403 return buf - orig_buf;
9404 }
9405
9406 static ssize_t show_rxchan_per_port(struct device *dev,
9407 struct device_attribute *attr, char *buf)
9408 {
9409 return __show_chan_per_port(dev, attr, buf, 1);
9410 }
9411
9412 static ssize_t show_txchan_per_port(struct device *dev,
9413 struct device_attribute *attr, char *buf)
9414 {
9415 return __show_chan_per_port(dev, attr, buf, 1);
9416 }
9417
9418 static ssize_t show_num_ports(struct device *dev,
9419 struct device_attribute *attr, char *buf)
9420 {
9421 struct platform_device *plat_dev = to_platform_device(dev);
9422 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9423
9424 return sprintf(buf, "%d\n", p->num_ports);
9425 }
9426
9427 static struct device_attribute niu_parent_attributes[] = {
9428 __ATTR(port_phy, 0444, show_port_phy, NULL),
9429 __ATTR(plat_type, 0444, show_plat_type, NULL),
9430 __ATTR(rxchan_per_port, 0444, show_rxchan_per_port, NULL),
9431 __ATTR(txchan_per_port, 0444, show_txchan_per_port, NULL),
9432 __ATTR(num_ports, 0444, show_num_ports, NULL),
9433 {}
9434 };
9435
9436 static struct niu_parent *niu_new_parent(struct niu *np,
9437 union niu_parent_id *id, u8 ptype)
9438 {
9439 struct platform_device *plat_dev;
9440 struct niu_parent *p;
9441 int i;
9442
9443 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9444 NULL, 0);
9445 if (IS_ERR(plat_dev))
9446 return NULL;
9447
9448 for (i = 0; niu_parent_attributes[i].attr.name; i++) {
9449 int err = device_create_file(&plat_dev->dev,
9450 &niu_parent_attributes[i]);
9451 if (err)
9452 goto fail_unregister;
9453 }
9454
9455 p = kzalloc(sizeof(*p), GFP_KERNEL);
9456 if (!p)
9457 goto fail_unregister;
9458
9459 p->index = niu_parent_index++;
9460
9461 plat_dev->dev.platform_data = p;
9462 p->plat_dev = plat_dev;
9463
9464 memcpy(&p->id, id, sizeof(*id));
9465 p->plat_type = ptype;
9466 INIT_LIST_HEAD(&p->list);
9467 atomic_set(&p->refcnt, 0);
9468 list_add(&p->list, &niu_parent_list);
9469 spin_lock_init(&p->lock);
9470
9471 p->rxdma_clock_divider = 7500;
9472
9473 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9474 if (p->plat_type == PLAT_TYPE_NIU)
9475 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9476
9477 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9478 int index = i - CLASS_CODE_USER_PROG1;
9479
9480 p->tcam_key[index] = TCAM_KEY_TSEL;
9481 p->flow_key[index] = (FLOW_KEY_IPSA |
9482 FLOW_KEY_IPDA |
9483 FLOW_KEY_PROTO |
9484 (FLOW_KEY_L4_BYTE12 <<
9485 FLOW_KEY_L4_0_SHIFT) |
9486 (FLOW_KEY_L4_BYTE12 <<
9487 FLOW_KEY_L4_1_SHIFT));
9488 }
9489
9490 for (i = 0; i < LDN_MAX + 1; i++)
9491 p->ldg_map[i] = LDG_INVALID;
9492
9493 return p;
9494
9495 fail_unregister:
9496 platform_device_unregister(plat_dev);
9497 return NULL;
9498 }
9499
9500 static struct niu_parent *niu_get_parent(struct niu *np,
9501 union niu_parent_id *id, u8 ptype)
9502 {
9503 struct niu_parent *p, *tmp;
9504 int port = np->port;
9505
9506 mutex_lock(&niu_parent_lock);
9507 p = NULL;
9508 list_for_each_entry(tmp, &niu_parent_list, list) {
9509 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9510 p = tmp;
9511 break;
9512 }
9513 }
9514 if (!p)
9515 p = niu_new_parent(np, id, ptype);
9516
9517 if (p) {
9518 char port_name[8];
9519 int err;
9520
9521 sprintf(port_name, "port%d", port);
9522 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9523 &np->device->kobj,
9524 port_name);
9525 if (!err) {
9526 p->ports[port] = np;
9527 atomic_inc(&p->refcnt);
9528 }
9529 }
9530 mutex_unlock(&niu_parent_lock);
9531
9532 return p;
9533 }
9534
9535 static void niu_put_parent(struct niu *np)
9536 {
9537 struct niu_parent *p = np->parent;
9538 u8 port = np->port;
9539 char port_name[8];
9540
9541 BUG_ON(!p || p->ports[port] != np);
9542
9543 netif_printk(np, probe, KERN_DEBUG, np->dev,
9544 "%s() port[%u]\n", __func__, port);
9545
9546 sprintf(port_name, "port%d", port);
9547
9548 mutex_lock(&niu_parent_lock);
9549
9550 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9551
9552 p->ports[port] = NULL;
9553 np->parent = NULL;
9554
9555 if (atomic_dec_and_test(&p->refcnt)) {
9556 list_del(&p->list);
9557 platform_device_unregister(p->plat_dev);
9558 }
9559
9560 mutex_unlock(&niu_parent_lock);
9561 }
9562
9563 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9564 u64 *handle, gfp_t flag)
9565 {
9566 dma_addr_t dh;
9567 void *ret;
9568
9569 ret = dma_alloc_coherent(dev, size, &dh, flag);
9570 if (ret)
9571 *handle = dh;
9572 return ret;
9573 }
9574
9575 static void niu_pci_free_coherent(struct device *dev, size_t size,
9576 void *cpu_addr, u64 handle)
9577 {
9578 dma_free_coherent(dev, size, cpu_addr, handle);
9579 }
9580
9581 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9582 unsigned long offset, size_t size,
9583 enum dma_data_direction direction)
9584 {
9585 return dma_map_page(dev, page, offset, size, direction);
9586 }
9587
9588 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9589 size_t size, enum dma_data_direction direction)
9590 {
9591 dma_unmap_page(dev, dma_address, size, direction);
9592 }
9593
9594 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9595 size_t size,
9596 enum dma_data_direction direction)
9597 {
9598 return dma_map_single(dev, cpu_addr, size, direction);
9599 }
9600
9601 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9602 size_t size,
9603 enum dma_data_direction direction)
9604 {
9605 dma_unmap_single(dev, dma_address, size, direction);
9606 }
9607
9608 static const struct niu_ops niu_pci_ops = {
9609 .alloc_coherent = niu_pci_alloc_coherent,
9610 .free_coherent = niu_pci_free_coherent,
9611 .map_page = niu_pci_map_page,
9612 .unmap_page = niu_pci_unmap_page,
9613 .map_single = niu_pci_map_single,
9614 .unmap_single = niu_pci_unmap_single,
9615 };
9616
9617 static void niu_driver_version(void)
9618 {
9619 static int niu_version_printed;
9620
9621 if (niu_version_printed++ == 0)
9622 pr_info("%s", version);
9623 }
9624
9625 static struct net_device *niu_alloc_and_init(struct device *gen_dev,
9626 struct pci_dev *pdev,
9627 struct platform_device *op,
9628 const struct niu_ops *ops, u8 port)
9629 {
9630 struct net_device *dev;
9631 struct niu *np;
9632
9633 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9634 if (!dev)
9635 return NULL;
9636
9637 SET_NETDEV_DEV(dev, gen_dev);
9638
9639 np = netdev_priv(dev);
9640 np->dev = dev;
9641 np->pdev = pdev;
9642 np->op = op;
9643 np->device = gen_dev;
9644 np->ops = ops;
9645
9646 np->msg_enable = niu_debug;
9647
9648 spin_lock_init(&np->lock);
9649 INIT_WORK(&np->reset_task, niu_reset_task);
9650
9651 np->port = port;
9652
9653 return dev;
9654 }
9655
9656 static const struct net_device_ops niu_netdev_ops = {
9657 .ndo_open = niu_open,
9658 .ndo_stop = niu_close,
9659 .ndo_start_xmit = niu_start_xmit,
9660 .ndo_get_stats64 = niu_get_stats,
9661 .ndo_set_rx_mode = niu_set_rx_mode,
9662 .ndo_validate_addr = eth_validate_addr,
9663 .ndo_set_mac_address = niu_set_mac_addr,
9664 .ndo_do_ioctl = niu_ioctl,
9665 .ndo_tx_timeout = niu_tx_timeout,
9666 .ndo_change_mtu = niu_change_mtu,
9667 };
9668
9669 static void niu_assign_netdev_ops(struct net_device *dev)
9670 {
9671 dev->netdev_ops = &niu_netdev_ops;
9672 dev->ethtool_ops = &niu_ethtool_ops;
9673 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9674 }
9675
9676 static void niu_device_announce(struct niu *np)
9677 {
9678 struct net_device *dev = np->dev;
9679
9680 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9681
9682 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9683 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9684 dev->name,
9685 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9686 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9687 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9688 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9689 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9690 np->vpd.phy_type);
9691 } else {
9692 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9693 dev->name,
9694 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9695 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9696 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9697 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9698 "COPPER")),
9699 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9700 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9701 np->vpd.phy_type);
9702 }
9703 }
9704
9705 static void niu_set_basic_features(struct net_device *dev)
9706 {
9707 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9708 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9709 }
9710
9711 static int niu_pci_init_one(struct pci_dev *pdev,
9712 const struct pci_device_id *ent)
9713 {
9714 union niu_parent_id parent_id;
9715 struct net_device *dev;
9716 struct niu *np;
9717 int err;
9718 u64 dma_mask;
9719
9720 niu_driver_version();
9721
9722 err = pci_enable_device(pdev);
9723 if (err) {
9724 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9725 return err;
9726 }
9727
9728 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9729 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9730 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9731 err = -ENODEV;
9732 goto err_out_disable_pdev;
9733 }
9734
9735 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9736 if (err) {
9737 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9738 goto err_out_disable_pdev;
9739 }
9740
9741 if (!pci_is_pcie(pdev)) {
9742 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9743 err = -ENODEV;
9744 goto err_out_free_res;
9745 }
9746
9747 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9748 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9749 if (!dev) {
9750 err = -ENOMEM;
9751 goto err_out_free_res;
9752 }
9753 np = netdev_priv(dev);
9754
9755 memset(&parent_id, 0, sizeof(parent_id));
9756 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9757 parent_id.pci.bus = pdev->bus->number;
9758 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9759
9760 np->parent = niu_get_parent(np, &parent_id,
9761 PLAT_TYPE_ATLAS);
9762 if (!np->parent) {
9763 err = -ENOMEM;
9764 goto err_out_free_dev;
9765 }
9766
9767 pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
9768 PCI_EXP_DEVCTL_NOSNOOP_EN,
9769 PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
9770 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
9771 PCI_EXP_DEVCTL_RELAX_EN);
9772
9773 dma_mask = DMA_BIT_MASK(44);
9774 err = pci_set_dma_mask(pdev, dma_mask);
9775 if (!err) {
9776 dev->features |= NETIF_F_HIGHDMA;
9777 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9778 if (err) {
9779 dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9780 goto err_out_release_parent;
9781 }
9782 }
9783 if (err) {
9784 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9785 if (err) {
9786 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9787 goto err_out_release_parent;
9788 }
9789 }
9790
9791 niu_set_basic_features(dev);
9792
9793 dev->priv_flags |= IFF_UNICAST_FLT;
9794
9795 np->regs = pci_ioremap_bar(pdev, 0);
9796 if (!np->regs) {
9797 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9798 err = -ENOMEM;
9799 goto err_out_release_parent;
9800 }
9801
9802 pci_set_master(pdev);
9803 pci_save_state(pdev);
9804
9805 dev->irq = pdev->irq;
9806
9807 /* MTU range: 68 - 9216 */
9808 dev->min_mtu = ETH_MIN_MTU;
9809 dev->max_mtu = NIU_MAX_MTU;
9810
9811 niu_assign_netdev_ops(dev);
9812
9813 err = niu_get_invariants(np);
9814 if (err) {
9815 if (err != -ENODEV)
9816 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9817 goto err_out_iounmap;
9818 }
9819
9820 err = register_netdev(dev);
9821 if (err) {
9822 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9823 goto err_out_iounmap;
9824 }
9825
9826 pci_set_drvdata(pdev, dev);
9827
9828 niu_device_announce(np);
9829
9830 return 0;
9831
9832 err_out_iounmap:
9833 if (np->regs) {
9834 iounmap(np->regs);
9835 np->regs = NULL;
9836 }
9837
9838 err_out_release_parent:
9839 niu_put_parent(np);
9840
9841 err_out_free_dev:
9842 free_netdev(dev);
9843
9844 err_out_free_res:
9845 pci_release_regions(pdev);
9846
9847 err_out_disable_pdev:
9848 pci_disable_device(pdev);
9849
9850 return err;
9851 }
9852
9853 static void niu_pci_remove_one(struct pci_dev *pdev)
9854 {
9855 struct net_device *dev = pci_get_drvdata(pdev);
9856
9857 if (dev) {
9858 struct niu *np = netdev_priv(dev);
9859
9860 unregister_netdev(dev);
9861 if (np->regs) {
9862 iounmap(np->regs);
9863 np->regs = NULL;
9864 }
9865
9866 niu_ldg_free(np);
9867
9868 niu_put_parent(np);
9869
9870 free_netdev(dev);
9871 pci_release_regions(pdev);
9872 pci_disable_device(pdev);
9873 }
9874 }
9875
9876 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9877 {
9878 struct net_device *dev = pci_get_drvdata(pdev);
9879 struct niu *np = netdev_priv(dev);
9880 unsigned long flags;
9881
9882 if (!netif_running(dev))
9883 return 0;
9884
9885 flush_work(&np->reset_task);
9886 niu_netif_stop(np);
9887
9888 del_timer_sync(&np->timer);
9889
9890 spin_lock_irqsave(&np->lock, flags);
9891 niu_enable_interrupts(np, 0);
9892 spin_unlock_irqrestore(&np->lock, flags);
9893
9894 netif_device_detach(dev);
9895
9896 spin_lock_irqsave(&np->lock, flags);
9897 niu_stop_hw(np);
9898 spin_unlock_irqrestore(&np->lock, flags);
9899
9900 pci_save_state(pdev);
9901
9902 return 0;
9903 }
9904
9905 static int niu_resume(struct pci_dev *pdev)
9906 {
9907 struct net_device *dev = pci_get_drvdata(pdev);
9908 struct niu *np = netdev_priv(dev);
9909 unsigned long flags;
9910 int err;
9911
9912 if (!netif_running(dev))
9913 return 0;
9914
9915 pci_restore_state(pdev);
9916
9917 netif_device_attach(dev);
9918
9919 spin_lock_irqsave(&np->lock, flags);
9920
9921 err = niu_init_hw(np);
9922 if (!err) {
9923 np->timer.expires = jiffies + HZ;
9924 add_timer(&np->timer);
9925 niu_netif_start(np);
9926 }
9927
9928 spin_unlock_irqrestore(&np->lock, flags);
9929
9930 return err;
9931 }
9932
9933 static struct pci_driver niu_pci_driver = {
9934 .name = DRV_MODULE_NAME,
9935 .id_table = niu_pci_tbl,
9936 .probe = niu_pci_init_one,
9937 .remove = niu_pci_remove_one,
9938 .suspend = niu_suspend,
9939 .resume = niu_resume,
9940 };
9941
9942 #ifdef CONFIG_SPARC64
9943 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9944 u64 *dma_addr, gfp_t flag)
9945 {
9946 unsigned long order = get_order(size);
9947 unsigned long page = __get_free_pages(flag, order);
9948
9949 if (page == 0UL)
9950 return NULL;
9951 memset((char *)page, 0, PAGE_SIZE << order);
9952 *dma_addr = __pa(page);
9953
9954 return (void *) page;
9955 }
9956
9957 static void niu_phys_free_coherent(struct device *dev, size_t size,
9958 void *cpu_addr, u64 handle)
9959 {
9960 unsigned long order = get_order(size);
9961
9962 free_pages((unsigned long) cpu_addr, order);
9963 }
9964
9965 static u64 niu_phys_map_page(struct device *dev, struct page *page,
9966 unsigned long offset, size_t size,
9967 enum dma_data_direction direction)
9968 {
9969 return page_to_phys(page) + offset;
9970 }
9971
9972 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
9973 size_t size, enum dma_data_direction direction)
9974 {
9975 /* Nothing to do. */
9976 }
9977
9978 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
9979 size_t size,
9980 enum dma_data_direction direction)
9981 {
9982 return __pa(cpu_addr);
9983 }
9984
9985 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
9986 size_t size,
9987 enum dma_data_direction direction)
9988 {
9989 /* Nothing to do. */
9990 }
9991
9992 static const struct niu_ops niu_phys_ops = {
9993 .alloc_coherent = niu_phys_alloc_coherent,
9994 .free_coherent = niu_phys_free_coherent,
9995 .map_page = niu_phys_map_page,
9996 .unmap_page = niu_phys_unmap_page,
9997 .map_single = niu_phys_map_single,
9998 .unmap_single = niu_phys_unmap_single,
9999 };
10000
10001 static int niu_of_probe(struct platform_device *op)
10002 {
10003 union niu_parent_id parent_id;
10004 struct net_device *dev;
10005 struct niu *np;
10006 const u32 *reg;
10007 int err;
10008
10009 niu_driver_version();
10010
10011 reg = of_get_property(op->dev.of_node, "reg", NULL);
10012 if (!reg) {
10013 dev_err(&op->dev, "%pOF: No 'reg' property, aborting\n",
10014 op->dev.of_node);
10015 return -ENODEV;
10016 }
10017
10018 dev = niu_alloc_and_init(&op->dev, NULL, op,
10019 &niu_phys_ops, reg[0] & 0x1);
10020 if (!dev) {
10021 err = -ENOMEM;
10022 goto err_out;
10023 }
10024 np = netdev_priv(dev);
10025
10026 memset(&parent_id, 0, sizeof(parent_id));
10027 parent_id.of = of_get_parent(op->dev.of_node);
10028
10029 np->parent = niu_get_parent(np, &parent_id,
10030 PLAT_TYPE_NIU);
10031 if (!np->parent) {
10032 err = -ENOMEM;
10033 goto err_out_free_dev;
10034 }
10035
10036 niu_set_basic_features(dev);
10037
10038 np->regs = of_ioremap(&op->resource[1], 0,
10039 resource_size(&op->resource[1]),
10040 "niu regs");
10041 if (!np->regs) {
10042 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10043 err = -ENOMEM;
10044 goto err_out_release_parent;
10045 }
10046
10047 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10048 resource_size(&op->resource[2]),
10049 "niu vregs-1");
10050 if (!np->vir_regs_1) {
10051 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10052 err = -ENOMEM;
10053 goto err_out_iounmap;
10054 }
10055
10056 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10057 resource_size(&op->resource[3]),
10058 "niu vregs-2");
10059 if (!np->vir_regs_2) {
10060 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10061 err = -ENOMEM;
10062 goto err_out_iounmap;
10063 }
10064
10065 niu_assign_netdev_ops(dev);
10066
10067 err = niu_get_invariants(np);
10068 if (err) {
10069 if (err != -ENODEV)
10070 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10071 goto err_out_iounmap;
10072 }
10073
10074 err = register_netdev(dev);
10075 if (err) {
10076 dev_err(&op->dev, "Cannot register net device, aborting\n");
10077 goto err_out_iounmap;
10078 }
10079
10080 platform_set_drvdata(op, dev);
10081
10082 niu_device_announce(np);
10083
10084 return 0;
10085
10086 err_out_iounmap:
10087 if (np->vir_regs_1) {
10088 of_iounmap(&op->resource[2], np->vir_regs_1,
10089 resource_size(&op->resource[2]));
10090 np->vir_regs_1 = NULL;
10091 }
10092
10093 if (np->vir_regs_2) {
10094 of_iounmap(&op->resource[3], np->vir_regs_2,
10095 resource_size(&op->resource[3]));
10096 np->vir_regs_2 = NULL;
10097 }
10098
10099 if (np->regs) {
10100 of_iounmap(&op->resource[1], np->regs,
10101 resource_size(&op->resource[1]));
10102 np->regs = NULL;
10103 }
10104
10105 err_out_release_parent:
10106 niu_put_parent(np);
10107
10108 err_out_free_dev:
10109 free_netdev(dev);
10110
10111 err_out:
10112 return err;
10113 }
10114
10115 static int niu_of_remove(struct platform_device *op)
10116 {
10117 struct net_device *dev = platform_get_drvdata(op);
10118
10119 if (dev) {
10120 struct niu *np = netdev_priv(dev);
10121
10122 unregister_netdev(dev);
10123
10124 if (np->vir_regs_1) {
10125 of_iounmap(&op->resource[2], np->vir_regs_1,
10126 resource_size(&op->resource[2]));
10127 np->vir_regs_1 = NULL;
10128 }
10129
10130 if (np->vir_regs_2) {
10131 of_iounmap(&op->resource[3], np->vir_regs_2,
10132 resource_size(&op->resource[3]));
10133 np->vir_regs_2 = NULL;
10134 }
10135
10136 if (np->regs) {
10137 of_iounmap(&op->resource[1], np->regs,
10138 resource_size(&op->resource[1]));
10139 np->regs = NULL;
10140 }
10141
10142 niu_ldg_free(np);
10143
10144 niu_put_parent(np);
10145
10146 free_netdev(dev);
10147 }
10148 return 0;
10149 }
10150
10151 static const struct of_device_id niu_match[] = {
10152 {
10153 .name = "network",
10154 .compatible = "SUNW,niusl",
10155 },
10156 {},
10157 };
10158 MODULE_DEVICE_TABLE(of, niu_match);
10159
10160 static struct platform_driver niu_of_driver = {
10161 .driver = {
10162 .name = "niu",
10163 .of_match_table = niu_match,
10164 },
10165 .probe = niu_of_probe,
10166 .remove = niu_of_remove,
10167 };
10168
10169 #endif /* CONFIG_SPARC64 */
10170
10171 static int __init niu_init(void)
10172 {
10173 int err = 0;
10174
10175 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10176
10177 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10178
10179 #ifdef CONFIG_SPARC64
10180 err = platform_driver_register(&niu_of_driver);
10181 #endif
10182
10183 if (!err) {
10184 err = pci_register_driver(&niu_pci_driver);
10185 #ifdef CONFIG_SPARC64
10186 if (err)
10187 platform_driver_unregister(&niu_of_driver);
10188 #endif
10189 }
10190
10191 return err;
10192 }
10193
10194 static void __exit niu_exit(void)
10195 {
10196 pci_unregister_driver(&niu_pci_driver);
10197 #ifdef CONFIG_SPARC64
10198 platform_driver_unregister(&niu_of_driver);
10199 #endif
10200 }
10201
10202 module_init(niu_init);
10203 module_exit(niu_exit);
Linux with added FPC-III support