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DRM: Replace kmalloc/memset combos with kzalloc
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / niu.c
blob63e8e3893bd6cb9d05ad674a036c1b3f49e82aad
1 /* niu.c: Neptune ethernet driver.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8 #include <linux/module.h>
9 #include <linux/init.h>
10 #include <linux/pci.h>
11 #include <linux/dma-mapping.h>
12 #include <linux/netdevice.h>
13 #include <linux/ethtool.h>
14 #include <linux/etherdevice.h>
15 #include <linux/platform_device.h>
16 #include <linux/delay.h>
17 #include <linux/bitops.h>
18 #include <linux/mii.h>
19 #include <linux/if_ether.h>
20 #include <linux/if_vlan.h>
21 #include <linux/ip.h>
22 #include <linux/in.h>
23 #include <linux/ipv6.h>
24 #include <linux/log2.h>
25 #include <linux/jiffies.h>
26 #include <linux/crc32.h>
27 #include <linux/list.h>
28 #include <linux/slab.h>
29
30 #include <linux/io.h>
31
32 #ifdef CONFIG_SPARC64
33 #include <linux/of_device.h>
34 #endif
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[] __devinitdata =
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 DEFINE_PCI_DEVICE_TABLE(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 = 0;
1156 if (advert & ADVERTISE_10HALF)
1157 advertising |= ADVERTISED_10baseT_Half;
1158 if (advert & ADVERTISE_10FULL)
1159 advertising |= ADVERTISED_10baseT_Full;
1160 if (advert & ADVERTISE_100HALF)
1161 advertising |= ADVERTISED_100baseT_Half;
1162 if (advert & ADVERTISE_100FULL)
1163 advertising |= ADVERTISED_100baseT_Full;
1164 if (ctrl1000 & ADVERTISE_1000HALF)
1165 advertising |= ADVERTISED_1000baseT_Half;
1166 if (ctrl1000 & ADVERTISE_1000FULL)
1167 advertising |= ADVERTISED_1000baseT_Full;
1168
1169 if (bmcr & BMCR_ANENABLE) {
1170 int neg, neg1000;
1171
1172 lp->active_autoneg = 1;
1173 advertising |= ADVERTISED_Autoneg;
1174
1175 neg = advert & lpa;
1176 neg1000 = (ctrl1000 << 2) & stat1000;
1177
1178 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1179 active_speed = SPEED_1000;
1180 else if (neg & LPA_100)
1181 active_speed = SPEED_100;
1182 else if (neg & (LPA_10HALF | LPA_10FULL))
1183 active_speed = SPEED_10;
1184 else
1185 active_speed = SPEED_INVALID;
1186
1187 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1188 active_duplex = DUPLEX_FULL;
1189 else if (active_speed != SPEED_INVALID)
1190 active_duplex = DUPLEX_HALF;
1191 else
1192 active_duplex = DUPLEX_INVALID;
1193 } else {
1194 lp->active_autoneg = 0;
1195
1196 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1197 active_speed = SPEED_1000;
1198 else if (bmcr & BMCR_SPEED100)
1199 active_speed = SPEED_100;
1200 else
1201 active_speed = SPEED_10;
1202
1203 if (bmcr & BMCR_FULLDPLX)
1204 active_duplex = DUPLEX_FULL;
1205 else
1206 active_duplex = DUPLEX_HALF;
1207 }
1208
1209 lp->active_advertising = advertising;
1210 lp->active_speed = active_speed;
1211 lp->active_duplex = active_duplex;
1212 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1213
1214 return 0;
1215 }
1216
1217 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1218 {
1219 struct niu_link_config *lp = &np->link_config;
1220 u16 current_speed, bmsr;
1221 unsigned long flags;
1222 u8 current_duplex;
1223 int err, link_up;
1224
1225 link_up = 0;
1226 current_speed = SPEED_INVALID;
1227 current_duplex = DUPLEX_INVALID;
1228
1229 spin_lock_irqsave(&np->lock, flags);
1230
1231 err = -EINVAL;
1232
1233 err = mii_read(np, np->phy_addr, MII_BMSR);
1234 if (err < 0)
1235 goto out;
1236
1237 bmsr = err;
1238 if (bmsr & BMSR_LSTATUS) {
1239 u16 adv, lpa, common, estat;
1240
1241 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1242 if (err < 0)
1243 goto out;
1244 adv = err;
1245
1246 err = mii_read(np, np->phy_addr, MII_LPA);
1247 if (err < 0)
1248 goto out;
1249 lpa = err;
1250
1251 common = adv & lpa;
1252
1253 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1254 if (err < 0)
1255 goto out;
1256 estat = err;
1257 link_up = 1;
1258 current_speed = SPEED_1000;
1259 current_duplex = DUPLEX_FULL;
1260
1261 }
1262 lp->active_speed = current_speed;
1263 lp->active_duplex = current_duplex;
1264 err = 0;
1265
1266 out:
1267 spin_unlock_irqrestore(&np->lock, flags);
1268
1269 *link_up_p = link_up;
1270 return err;
1271 }
1272
1273 static int link_status_1g(struct niu *np, int *link_up_p)
1274 {
1275 struct niu_link_config *lp = &np->link_config;
1276 unsigned long flags;
1277 int err;
1278
1279 spin_lock_irqsave(&np->lock, flags);
1280
1281 err = link_status_mii(np, link_up_p);
1282 lp->supported |= SUPPORTED_TP;
1283 lp->active_advertising |= ADVERTISED_TP;
1284
1285 spin_unlock_irqrestore(&np->lock, flags);
1286 return err;
1287 }
1288
1289 static int bcm8704_reset(struct niu *np)
1290 {
1291 int err, limit;
1292
1293 err = mdio_read(np, np->phy_addr,
1294 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1295 if (err < 0 || err == 0xffff)
1296 return err;
1297 err |= BMCR_RESET;
1298 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1299 MII_BMCR, err);
1300 if (err)
1301 return err;
1302
1303 limit = 1000;
1304 while (--limit >= 0) {
1305 err = mdio_read(np, np->phy_addr,
1306 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1307 if (err < 0)
1308 return err;
1309 if (!(err & BMCR_RESET))
1310 break;
1311 }
1312 if (limit < 0) {
1313 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1314 np->port, (err & 0xffff));
1315 return -ENODEV;
1316 }
1317 return 0;
1318 }
1319
1320 /* When written, certain PHY registers need to be read back twice
1321 * in order for the bits to settle properly.
1322 */
1323 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1324 {
1325 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1326 if (err < 0)
1327 return err;
1328 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1329 if (err < 0)
1330 return err;
1331 return 0;
1332 }
1333
1334 static int bcm8706_init_user_dev3(struct niu *np)
1335 {
1336 int err;
1337
1338
1339 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1340 BCM8704_USER_OPT_DIGITAL_CTRL);
1341 if (err < 0)
1342 return err;
1343 err &= ~USER_ODIG_CTRL_GPIOS;
1344 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1345 err |= USER_ODIG_CTRL_RESV2;
1346 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1347 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1348 if (err)
1349 return err;
1350
1351 mdelay(1000);
1352
1353 return 0;
1354 }
1355
1356 static int bcm8704_init_user_dev3(struct niu *np)
1357 {
1358 int err;
1359
1360 err = mdio_write(np, np->phy_addr,
1361 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1362 (USER_CONTROL_OPTXRST_LVL |
1363 USER_CONTROL_OPBIASFLT_LVL |
1364 USER_CONTROL_OBTMPFLT_LVL |
1365 USER_CONTROL_OPPRFLT_LVL |
1366 USER_CONTROL_OPTXFLT_LVL |
1367 USER_CONTROL_OPRXLOS_LVL |
1368 USER_CONTROL_OPRXFLT_LVL |
1369 USER_CONTROL_OPTXON_LVL |
1370 (0x3f << USER_CONTROL_RES1_SHIFT)));
1371 if (err)
1372 return err;
1373
1374 err = mdio_write(np, np->phy_addr,
1375 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1376 (USER_PMD_TX_CTL_XFP_CLKEN |
1377 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1378 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1379 USER_PMD_TX_CTL_TSCK_LPWREN));
1380 if (err)
1381 return err;
1382
1383 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1384 if (err)
1385 return err;
1386 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1387 if (err)
1388 return err;
1389
1390 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1391 BCM8704_USER_OPT_DIGITAL_CTRL);
1392 if (err < 0)
1393 return err;
1394 err &= ~USER_ODIG_CTRL_GPIOS;
1395 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1396 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1397 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1398 if (err)
1399 return err;
1400
1401 mdelay(1000);
1402
1403 return 0;
1404 }
1405
1406 static int mrvl88x2011_act_led(struct niu *np, int val)
1407 {
1408 int err;
1409
1410 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1411 MRVL88X2011_LED_8_TO_11_CTL);
1412 if (err < 0)
1413 return err;
1414
1415 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1416 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1417
1418 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1419 MRVL88X2011_LED_8_TO_11_CTL, err);
1420 }
1421
1422 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1423 {
1424 int err;
1425
1426 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1427 MRVL88X2011_LED_BLINK_CTL);
1428 if (err >= 0) {
1429 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1430 err |= (rate << 4);
1431
1432 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1433 MRVL88X2011_LED_BLINK_CTL, err);
1434 }
1435
1436 return err;
1437 }
1438
1439 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1440 {
1441 int err;
1442
1443 /* Set LED functions */
1444 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1445 if (err)
1446 return err;
1447
1448 /* led activity */
1449 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1450 if (err)
1451 return err;
1452
1453 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1454 MRVL88X2011_GENERAL_CTL);
1455 if (err < 0)
1456 return err;
1457
1458 err |= MRVL88X2011_ENA_XFPREFCLK;
1459
1460 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1461 MRVL88X2011_GENERAL_CTL, err);
1462 if (err < 0)
1463 return err;
1464
1465 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1466 MRVL88X2011_PMA_PMD_CTL_1);
1467 if (err < 0)
1468 return err;
1469
1470 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1471 err |= MRVL88X2011_LOOPBACK;
1472 else
1473 err &= ~MRVL88X2011_LOOPBACK;
1474
1475 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1476 MRVL88X2011_PMA_PMD_CTL_1, err);
1477 if (err < 0)
1478 return err;
1479
1480 /* Enable PMD */
1481 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1482 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1483 }
1484
1485
1486 static int xcvr_diag_bcm870x(struct niu *np)
1487 {
1488 u16 analog_stat0, tx_alarm_status;
1489 int err = 0;
1490
1491 #if 1
1492 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1493 MII_STAT1000);
1494 if (err < 0)
1495 return err;
1496 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1497
1498 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1499 if (err < 0)
1500 return err;
1501 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1502
1503 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1504 MII_NWAYTEST);
1505 if (err < 0)
1506 return err;
1507 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1508 #endif
1509
1510 /* XXX dig this out it might not be so useful XXX */
1511 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1512 BCM8704_USER_ANALOG_STATUS0);
1513 if (err < 0)
1514 return err;
1515 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1516 BCM8704_USER_ANALOG_STATUS0);
1517 if (err < 0)
1518 return err;
1519 analog_stat0 = err;
1520
1521 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1522 BCM8704_USER_TX_ALARM_STATUS);
1523 if (err < 0)
1524 return err;
1525 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1526 BCM8704_USER_TX_ALARM_STATUS);
1527 if (err < 0)
1528 return err;
1529 tx_alarm_status = err;
1530
1531 if (analog_stat0 != 0x03fc) {
1532 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1533 pr_info("Port %u cable not connected or bad cable\n",
1534 np->port);
1535 } else if (analog_stat0 == 0x639c) {
1536 pr_info("Port %u optical module is bad or missing\n",
1537 np->port);
1538 }
1539 }
1540
1541 return 0;
1542 }
1543
1544 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1545 {
1546 struct niu_link_config *lp = &np->link_config;
1547 int err;
1548
1549 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1550 MII_BMCR);
1551 if (err < 0)
1552 return err;
1553
1554 err &= ~BMCR_LOOPBACK;
1555
1556 if (lp->loopback_mode == LOOPBACK_MAC)
1557 err |= BMCR_LOOPBACK;
1558
1559 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1560 MII_BMCR, err);
1561 if (err)
1562 return err;
1563
1564 return 0;
1565 }
1566
1567 static int xcvr_init_10g_bcm8706(struct niu *np)
1568 {
1569 int err = 0;
1570 u64 val;
1571
1572 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1573 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1574 return err;
1575
1576 val = nr64_mac(XMAC_CONFIG);
1577 val &= ~XMAC_CONFIG_LED_POLARITY;
1578 val |= XMAC_CONFIG_FORCE_LED_ON;
1579 nw64_mac(XMAC_CONFIG, val);
1580
1581 val = nr64(MIF_CONFIG);
1582 val |= MIF_CONFIG_INDIRECT_MODE;
1583 nw64(MIF_CONFIG, val);
1584
1585 err = bcm8704_reset(np);
1586 if (err)
1587 return err;
1588
1589 err = xcvr_10g_set_lb_bcm870x(np);
1590 if (err)
1591 return err;
1592
1593 err = bcm8706_init_user_dev3(np);
1594 if (err)
1595 return err;
1596
1597 err = xcvr_diag_bcm870x(np);
1598 if (err)
1599 return err;
1600
1601 return 0;
1602 }
1603
1604 static int xcvr_init_10g_bcm8704(struct niu *np)
1605 {
1606 int err;
1607
1608 err = bcm8704_reset(np);
1609 if (err)
1610 return err;
1611
1612 err = bcm8704_init_user_dev3(np);
1613 if (err)
1614 return err;
1615
1616 err = xcvr_10g_set_lb_bcm870x(np);
1617 if (err)
1618 return err;
1619
1620 err = xcvr_diag_bcm870x(np);
1621 if (err)
1622 return err;
1623
1624 return 0;
1625 }
1626
1627 static int xcvr_init_10g(struct niu *np)
1628 {
1629 int phy_id, err;
1630 u64 val;
1631
1632 val = nr64_mac(XMAC_CONFIG);
1633 val &= ~XMAC_CONFIG_LED_POLARITY;
1634 val |= XMAC_CONFIG_FORCE_LED_ON;
1635 nw64_mac(XMAC_CONFIG, val);
1636
1637 /* XXX shared resource, lock parent XXX */
1638 val = nr64(MIF_CONFIG);
1639 val |= MIF_CONFIG_INDIRECT_MODE;
1640 nw64(MIF_CONFIG, val);
1641
1642 phy_id = phy_decode(np->parent->port_phy, np->port);
1643 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1644
1645 /* handle different phy types */
1646 switch (phy_id & NIU_PHY_ID_MASK) {
1647 case NIU_PHY_ID_MRVL88X2011:
1648 err = xcvr_init_10g_mrvl88x2011(np);
1649 break;
1650
1651 default: /* bcom 8704 */
1652 err = xcvr_init_10g_bcm8704(np);
1653 break;
1654 }
1655
1656 return 0;
1657 }
1658
1659 static int mii_reset(struct niu *np)
1660 {
1661 int limit, err;
1662
1663 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1664 if (err)
1665 return err;
1666
1667 limit = 1000;
1668 while (--limit >= 0) {
1669 udelay(500);
1670 err = mii_read(np, np->phy_addr, MII_BMCR);
1671 if (err < 0)
1672 return err;
1673 if (!(err & BMCR_RESET))
1674 break;
1675 }
1676 if (limit < 0) {
1677 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1678 np->port, err);
1679 return -ENODEV;
1680 }
1681
1682 return 0;
1683 }
1684
1685 static int xcvr_init_1g_rgmii(struct niu *np)
1686 {
1687 int err;
1688 u64 val;
1689 u16 bmcr, bmsr, estat;
1690
1691 val = nr64(MIF_CONFIG);
1692 val &= ~MIF_CONFIG_INDIRECT_MODE;
1693 nw64(MIF_CONFIG, val);
1694
1695 err = mii_reset(np);
1696 if (err)
1697 return err;
1698
1699 err = mii_read(np, np->phy_addr, MII_BMSR);
1700 if (err < 0)
1701 return err;
1702 bmsr = err;
1703
1704 estat = 0;
1705 if (bmsr & BMSR_ESTATEN) {
1706 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1707 if (err < 0)
1708 return err;
1709 estat = err;
1710 }
1711
1712 bmcr = 0;
1713 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1714 if (err)
1715 return err;
1716
1717 if (bmsr & BMSR_ESTATEN) {
1718 u16 ctrl1000 = 0;
1719
1720 if (estat & ESTATUS_1000_TFULL)
1721 ctrl1000 |= ADVERTISE_1000FULL;
1722 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1723 if (err)
1724 return err;
1725 }
1726
1727 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1728
1729 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1730 if (err)
1731 return err;
1732
1733 err = mii_read(np, np->phy_addr, MII_BMCR);
1734 if (err < 0)
1735 return err;
1736 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1737
1738 err = mii_read(np, np->phy_addr, MII_BMSR);
1739 if (err < 0)
1740 return err;
1741
1742 return 0;
1743 }
1744
1745 static int mii_init_common(struct niu *np)
1746 {
1747 struct niu_link_config *lp = &np->link_config;
1748 u16 bmcr, bmsr, adv, estat;
1749 int err;
1750
1751 err = mii_reset(np);
1752 if (err)
1753 return err;
1754
1755 err = mii_read(np, np->phy_addr, MII_BMSR);
1756 if (err < 0)
1757 return err;
1758 bmsr = err;
1759
1760 estat = 0;
1761 if (bmsr & BMSR_ESTATEN) {
1762 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1763 if (err < 0)
1764 return err;
1765 estat = err;
1766 }
1767
1768 bmcr = 0;
1769 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1770 if (err)
1771 return err;
1772
1773 if (lp->loopback_mode == LOOPBACK_MAC) {
1774 bmcr |= BMCR_LOOPBACK;
1775 if (lp->active_speed == SPEED_1000)
1776 bmcr |= BMCR_SPEED1000;
1777 if (lp->active_duplex == DUPLEX_FULL)
1778 bmcr |= BMCR_FULLDPLX;
1779 }
1780
1781 if (lp->loopback_mode == LOOPBACK_PHY) {
1782 u16 aux;
1783
1784 aux = (BCM5464R_AUX_CTL_EXT_LB |
1785 BCM5464R_AUX_CTL_WRITE_1);
1786 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1787 if (err)
1788 return err;
1789 }
1790
1791 if (lp->autoneg) {
1792 u16 ctrl1000;
1793
1794 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1795 if ((bmsr & BMSR_10HALF) &&
1796 (lp->advertising & ADVERTISED_10baseT_Half))
1797 adv |= ADVERTISE_10HALF;
1798 if ((bmsr & BMSR_10FULL) &&
1799 (lp->advertising & ADVERTISED_10baseT_Full))
1800 adv |= ADVERTISE_10FULL;
1801 if ((bmsr & BMSR_100HALF) &&
1802 (lp->advertising & ADVERTISED_100baseT_Half))
1803 adv |= ADVERTISE_100HALF;
1804 if ((bmsr & BMSR_100FULL) &&
1805 (lp->advertising & ADVERTISED_100baseT_Full))
1806 adv |= ADVERTISE_100FULL;
1807 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1808 if (err)
1809 return err;
1810
1811 if (likely(bmsr & BMSR_ESTATEN)) {
1812 ctrl1000 = 0;
1813 if ((estat & ESTATUS_1000_THALF) &&
1814 (lp->advertising & ADVERTISED_1000baseT_Half))
1815 ctrl1000 |= ADVERTISE_1000HALF;
1816 if ((estat & ESTATUS_1000_TFULL) &&
1817 (lp->advertising & ADVERTISED_1000baseT_Full))
1818 ctrl1000 |= ADVERTISE_1000FULL;
1819 err = mii_write(np, np->phy_addr,
1820 MII_CTRL1000, ctrl1000);
1821 if (err)
1822 return err;
1823 }
1824
1825 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1826 } else {
1827 /* !lp->autoneg */
1828 int fulldpx;
1829
1830 if (lp->duplex == DUPLEX_FULL) {
1831 bmcr |= BMCR_FULLDPLX;
1832 fulldpx = 1;
1833 } else if (lp->duplex == DUPLEX_HALF)
1834 fulldpx = 0;
1835 else
1836 return -EINVAL;
1837
1838 if (lp->speed == SPEED_1000) {
1839 /* if X-full requested while not supported, or
1840 X-half requested while not supported... */
1841 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1842 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1843 return -EINVAL;
1844 bmcr |= BMCR_SPEED1000;
1845 } else if (lp->speed == SPEED_100) {
1846 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1847 (!fulldpx && !(bmsr & BMSR_100HALF)))
1848 return -EINVAL;
1849 bmcr |= BMCR_SPEED100;
1850 } else if (lp->speed == SPEED_10) {
1851 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1852 (!fulldpx && !(bmsr & BMSR_10HALF)))
1853 return -EINVAL;
1854 } else
1855 return -EINVAL;
1856 }
1857
1858 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1859 if (err)
1860 return err;
1861
1862 #if 0
1863 err = mii_read(np, np->phy_addr, MII_BMCR);
1864 if (err < 0)
1865 return err;
1866 bmcr = err;
1867
1868 err = mii_read(np, np->phy_addr, MII_BMSR);
1869 if (err < 0)
1870 return err;
1871 bmsr = err;
1872
1873 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1874 np->port, bmcr, bmsr);
1875 #endif
1876
1877 return 0;
1878 }
1879
1880 static int xcvr_init_1g(struct niu *np)
1881 {
1882 u64 val;
1883
1884 /* XXX shared resource, lock parent XXX */
1885 val = nr64(MIF_CONFIG);
1886 val &= ~MIF_CONFIG_INDIRECT_MODE;
1887 nw64(MIF_CONFIG, val);
1888
1889 return mii_init_common(np);
1890 }
1891
1892 static int niu_xcvr_init(struct niu *np)
1893 {
1894 const struct niu_phy_ops *ops = np->phy_ops;
1895 int err;
1896
1897 err = 0;
1898 if (ops->xcvr_init)
1899 err = ops->xcvr_init(np);
1900
1901 return err;
1902 }
1903
1904 static int niu_serdes_init(struct niu *np)
1905 {
1906 const struct niu_phy_ops *ops = np->phy_ops;
1907 int err;
1908
1909 err = 0;
1910 if (ops->serdes_init)
1911 err = ops->serdes_init(np);
1912
1913 return err;
1914 }
1915
1916 static void niu_init_xif(struct niu *);
1917 static void niu_handle_led(struct niu *, int status);
1918
1919 static int niu_link_status_common(struct niu *np, int link_up)
1920 {
1921 struct niu_link_config *lp = &np->link_config;
1922 struct net_device *dev = np->dev;
1923 unsigned long flags;
1924
1925 if (!netif_carrier_ok(dev) && link_up) {
1926 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1927 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1928 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1929 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1930 "10Mbit/sec",
1931 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1932
1933 spin_lock_irqsave(&np->lock, flags);
1934 niu_init_xif(np);
1935 niu_handle_led(np, 1);
1936 spin_unlock_irqrestore(&np->lock, flags);
1937
1938 netif_carrier_on(dev);
1939 } else if (netif_carrier_ok(dev) && !link_up) {
1940 netif_warn(np, link, dev, "Link is down\n");
1941 spin_lock_irqsave(&np->lock, flags);
1942 niu_handle_led(np, 0);
1943 spin_unlock_irqrestore(&np->lock, flags);
1944 netif_carrier_off(dev);
1945 }
1946
1947 return 0;
1948 }
1949
1950 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1951 {
1952 int err, link_up, pma_status, pcs_status;
1953
1954 link_up = 0;
1955
1956 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1957 MRVL88X2011_10G_PMD_STATUS_2);
1958 if (err < 0)
1959 goto out;
1960
1961 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1962 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1963 MRVL88X2011_PMA_PMD_STATUS_1);
1964 if (err < 0)
1965 goto out;
1966
1967 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1968
1969 /* Check PMC Register : 3.0001.2 == 1: read twice */
1970 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1971 MRVL88X2011_PMA_PMD_STATUS_1);
1972 if (err < 0)
1973 goto out;
1974
1975 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1976 MRVL88X2011_PMA_PMD_STATUS_1);
1977 if (err < 0)
1978 goto out;
1979
1980 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1981
1982 /* Check XGXS Register : 4.0018.[0-3,12] */
1983 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1984 MRVL88X2011_10G_XGXS_LANE_STAT);
1985 if (err < 0)
1986 goto out;
1987
1988 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1989 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1990 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1991 0x800))
1992 link_up = (pma_status && pcs_status) ? 1 : 0;
1993
1994 np->link_config.active_speed = SPEED_10000;
1995 np->link_config.active_duplex = DUPLEX_FULL;
1996 err = 0;
1997 out:
1998 mrvl88x2011_act_led(np, (link_up ?
1999 MRVL88X2011_LED_CTL_PCS_ACT :
2000 MRVL88X2011_LED_CTL_OFF));
2001
2002 *link_up_p = link_up;
2003 return err;
2004 }
2005
2006 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
2007 {
2008 int err, link_up;
2009 link_up = 0;
2010
2011 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2012 BCM8704_PMD_RCV_SIGDET);
2013 if (err < 0 || err == 0xffff)
2014 goto out;
2015 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2016 err = 0;
2017 goto out;
2018 }
2019
2020 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2021 BCM8704_PCS_10G_R_STATUS);
2022 if (err < 0)
2023 goto out;
2024
2025 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2026 err = 0;
2027 goto out;
2028 }
2029
2030 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2031 BCM8704_PHYXS_XGXS_LANE_STAT);
2032 if (err < 0)
2033 goto out;
2034 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2035 PHYXS_XGXS_LANE_STAT_MAGIC |
2036 PHYXS_XGXS_LANE_STAT_PATTEST |
2037 PHYXS_XGXS_LANE_STAT_LANE3 |
2038 PHYXS_XGXS_LANE_STAT_LANE2 |
2039 PHYXS_XGXS_LANE_STAT_LANE1 |
2040 PHYXS_XGXS_LANE_STAT_LANE0)) {
2041 err = 0;
2042 np->link_config.active_speed = SPEED_INVALID;
2043 np->link_config.active_duplex = DUPLEX_INVALID;
2044 goto out;
2045 }
2046
2047 link_up = 1;
2048 np->link_config.active_speed = SPEED_10000;
2049 np->link_config.active_duplex = DUPLEX_FULL;
2050 err = 0;
2051
2052 out:
2053 *link_up_p = link_up;
2054 return err;
2055 }
2056
2057 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2058 {
2059 int err, link_up;
2060
2061 link_up = 0;
2062
2063 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2064 BCM8704_PMD_RCV_SIGDET);
2065 if (err < 0)
2066 goto out;
2067 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2068 err = 0;
2069 goto out;
2070 }
2071
2072 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2073 BCM8704_PCS_10G_R_STATUS);
2074 if (err < 0)
2075 goto out;
2076 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2077 err = 0;
2078 goto out;
2079 }
2080
2081 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2082 BCM8704_PHYXS_XGXS_LANE_STAT);
2083 if (err < 0)
2084 goto out;
2085
2086 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2087 PHYXS_XGXS_LANE_STAT_MAGIC |
2088 PHYXS_XGXS_LANE_STAT_LANE3 |
2089 PHYXS_XGXS_LANE_STAT_LANE2 |
2090 PHYXS_XGXS_LANE_STAT_LANE1 |
2091 PHYXS_XGXS_LANE_STAT_LANE0)) {
2092 err = 0;
2093 goto out;
2094 }
2095
2096 link_up = 1;
2097 np->link_config.active_speed = SPEED_10000;
2098 np->link_config.active_duplex = DUPLEX_FULL;
2099 err = 0;
2100
2101 out:
2102 *link_up_p = link_up;
2103 return err;
2104 }
2105
2106 static int link_status_10g(struct niu *np, int *link_up_p)
2107 {
2108 unsigned long flags;
2109 int err = -EINVAL;
2110
2111 spin_lock_irqsave(&np->lock, flags);
2112
2113 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2114 int phy_id;
2115
2116 phy_id = phy_decode(np->parent->port_phy, np->port);
2117 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2118
2119 /* handle different phy types */
2120 switch (phy_id & NIU_PHY_ID_MASK) {
2121 case NIU_PHY_ID_MRVL88X2011:
2122 err = link_status_10g_mrvl(np, link_up_p);
2123 break;
2124
2125 default: /* bcom 8704 */
2126 err = link_status_10g_bcom(np, link_up_p);
2127 break;
2128 }
2129 }
2130
2131 spin_unlock_irqrestore(&np->lock, flags);
2132
2133 return err;
2134 }
2135
2136 static int niu_10g_phy_present(struct niu *np)
2137 {
2138 u64 sig, mask, val;
2139
2140 sig = nr64(ESR_INT_SIGNALS);
2141 switch (np->port) {
2142 case 0:
2143 mask = ESR_INT_SIGNALS_P0_BITS;
2144 val = (ESR_INT_SRDY0_P0 |
2145 ESR_INT_DET0_P0 |
2146 ESR_INT_XSRDY_P0 |
2147 ESR_INT_XDP_P0_CH3 |
2148 ESR_INT_XDP_P0_CH2 |
2149 ESR_INT_XDP_P0_CH1 |
2150 ESR_INT_XDP_P0_CH0);
2151 break;
2152
2153 case 1:
2154 mask = ESR_INT_SIGNALS_P1_BITS;
2155 val = (ESR_INT_SRDY0_P1 |
2156 ESR_INT_DET0_P1 |
2157 ESR_INT_XSRDY_P1 |
2158 ESR_INT_XDP_P1_CH3 |
2159 ESR_INT_XDP_P1_CH2 |
2160 ESR_INT_XDP_P1_CH1 |
2161 ESR_INT_XDP_P1_CH0);
2162 break;
2163
2164 default:
2165 return 0;
2166 }
2167
2168 if ((sig & mask) != val)
2169 return 0;
2170 return 1;
2171 }
2172
2173 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2174 {
2175 unsigned long flags;
2176 int err = 0;
2177 int phy_present;
2178 int phy_present_prev;
2179
2180 spin_lock_irqsave(&np->lock, flags);
2181
2182 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2183 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2184 1 : 0;
2185 phy_present = niu_10g_phy_present(np);
2186 if (phy_present != phy_present_prev) {
2187 /* state change */
2188 if (phy_present) {
2189 /* A NEM was just plugged in */
2190 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2191 if (np->phy_ops->xcvr_init)
2192 err = np->phy_ops->xcvr_init(np);
2193 if (err) {
2194 err = mdio_read(np, np->phy_addr,
2195 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2196 if (err == 0xffff) {
2197 /* No mdio, back-to-back XAUI */
2198 goto out;
2199 }
2200 /* debounce */
2201 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2202 }
2203 } else {
2204 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2205 *link_up_p = 0;
2206 netif_warn(np, link, np->dev,
2207 "Hotplug PHY Removed\n");
2208 }
2209 }
2210 out:
2211 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2212 err = link_status_10g_bcm8706(np, link_up_p);
2213 if (err == 0xffff) {
2214 /* No mdio, back-to-back XAUI: it is C10NEM */
2215 *link_up_p = 1;
2216 np->link_config.active_speed = SPEED_10000;
2217 np->link_config.active_duplex = DUPLEX_FULL;
2218 }
2219 }
2220 }
2221
2222 spin_unlock_irqrestore(&np->lock, flags);
2223
2224 return 0;
2225 }
2226
2227 static int niu_link_status(struct niu *np, int *link_up_p)
2228 {
2229 const struct niu_phy_ops *ops = np->phy_ops;
2230 int err;
2231
2232 err = 0;
2233 if (ops->link_status)
2234 err = ops->link_status(np, link_up_p);
2235
2236 return err;
2237 }
2238
2239 static void niu_timer(unsigned long __opaque)
2240 {
2241 struct niu *np = (struct niu *) __opaque;
2242 unsigned long off;
2243 int err, link_up;
2244
2245 err = niu_link_status(np, &link_up);
2246 if (!err)
2247 niu_link_status_common(np, link_up);
2248
2249 if (netif_carrier_ok(np->dev))
2250 off = 5 * HZ;
2251 else
2252 off = 1 * HZ;
2253 np->timer.expires = jiffies + off;
2254
2255 add_timer(&np->timer);
2256 }
2257
2258 static const struct niu_phy_ops phy_ops_10g_serdes = {
2259 .serdes_init = serdes_init_10g_serdes,
2260 .link_status = link_status_10g_serdes,
2261 };
2262
2263 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2264 .serdes_init = serdes_init_niu_10g_serdes,
2265 .link_status = link_status_10g_serdes,
2266 };
2267
2268 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2269 .serdes_init = serdes_init_niu_1g_serdes,
2270 .link_status = link_status_1g_serdes,
2271 };
2272
2273 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2274 .xcvr_init = xcvr_init_1g_rgmii,
2275 .link_status = link_status_1g_rgmii,
2276 };
2277
2278 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2279 .serdes_init = serdes_init_niu_10g_fiber,
2280 .xcvr_init = xcvr_init_10g,
2281 .link_status = link_status_10g,
2282 };
2283
2284 static const struct niu_phy_ops phy_ops_10g_fiber = {
2285 .serdes_init = serdes_init_10g,
2286 .xcvr_init = xcvr_init_10g,
2287 .link_status = link_status_10g,
2288 };
2289
2290 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2291 .serdes_init = serdes_init_10g,
2292 .xcvr_init = xcvr_init_10g_bcm8706,
2293 .link_status = link_status_10g_hotplug,
2294 };
2295
2296 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2297 .serdes_init = serdes_init_niu_10g_fiber,
2298 .xcvr_init = xcvr_init_10g_bcm8706,
2299 .link_status = link_status_10g_hotplug,
2300 };
2301
2302 static const struct niu_phy_ops phy_ops_10g_copper = {
2303 .serdes_init = serdes_init_10g,
2304 .link_status = link_status_10g, /* XXX */
2305 };
2306
2307 static const struct niu_phy_ops phy_ops_1g_fiber = {
2308 .serdes_init = serdes_init_1g,
2309 .xcvr_init = xcvr_init_1g,
2310 .link_status = link_status_1g,
2311 };
2312
2313 static const struct niu_phy_ops phy_ops_1g_copper = {
2314 .xcvr_init = xcvr_init_1g,
2315 .link_status = link_status_1g,
2316 };
2317
2318 struct niu_phy_template {
2319 const struct niu_phy_ops *ops;
2320 u32 phy_addr_base;
2321 };
2322
2323 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2324 .ops = &phy_ops_10g_fiber_niu,
2325 .phy_addr_base = 16,
2326 };
2327
2328 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2329 .ops = &phy_ops_10g_serdes_niu,
2330 .phy_addr_base = 0,
2331 };
2332
2333 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2334 .ops = &phy_ops_1g_serdes_niu,
2335 .phy_addr_base = 0,
2336 };
2337
2338 static const struct niu_phy_template phy_template_10g_fiber = {
2339 .ops = &phy_ops_10g_fiber,
2340 .phy_addr_base = 8,
2341 };
2342
2343 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2344 .ops = &phy_ops_10g_fiber_hotplug,
2345 .phy_addr_base = 8,
2346 };
2347
2348 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2349 .ops = &phy_ops_niu_10g_hotplug,
2350 .phy_addr_base = 8,
2351 };
2352
2353 static const struct niu_phy_template phy_template_10g_copper = {
2354 .ops = &phy_ops_10g_copper,
2355 .phy_addr_base = 10,
2356 };
2357
2358 static const struct niu_phy_template phy_template_1g_fiber = {
2359 .ops = &phy_ops_1g_fiber,
2360 .phy_addr_base = 0,
2361 };
2362
2363 static const struct niu_phy_template phy_template_1g_copper = {
2364 .ops = &phy_ops_1g_copper,
2365 .phy_addr_base = 0,
2366 };
2367
2368 static const struct niu_phy_template phy_template_1g_rgmii = {
2369 .ops = &phy_ops_1g_rgmii,
2370 .phy_addr_base = 0,
2371 };
2372
2373 static const struct niu_phy_template phy_template_10g_serdes = {
2374 .ops = &phy_ops_10g_serdes,
2375 .phy_addr_base = 0,
2376 };
2377
2378 static int niu_atca_port_num[4] = {
2379 0, 0, 11, 10
2380 };
2381
2382 static int serdes_init_10g_serdes(struct niu *np)
2383 {
2384 struct niu_link_config *lp = &np->link_config;
2385 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2386 u64 ctrl_val, test_cfg_val, sig, mask, val;
2387 u64 reset_val;
2388
2389 switch (np->port) {
2390 case 0:
2391 reset_val = ENET_SERDES_RESET_0;
2392 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2393 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2394 pll_cfg = ENET_SERDES_0_PLL_CFG;
2395 break;
2396 case 1:
2397 reset_val = ENET_SERDES_RESET_1;
2398 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2399 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2400 pll_cfg = ENET_SERDES_1_PLL_CFG;
2401 break;
2402
2403 default:
2404 return -EINVAL;
2405 }
2406 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2407 ENET_SERDES_CTRL_SDET_1 |
2408 ENET_SERDES_CTRL_SDET_2 |
2409 ENET_SERDES_CTRL_SDET_3 |
2410 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2411 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2412 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2413 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2414 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2415 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2416 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2417 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2418 test_cfg_val = 0;
2419
2420 if (lp->loopback_mode == LOOPBACK_PHY) {
2421 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2422 ENET_SERDES_TEST_MD_0_SHIFT) |
2423 (ENET_TEST_MD_PAD_LOOPBACK <<
2424 ENET_SERDES_TEST_MD_1_SHIFT) |
2425 (ENET_TEST_MD_PAD_LOOPBACK <<
2426 ENET_SERDES_TEST_MD_2_SHIFT) |
2427 (ENET_TEST_MD_PAD_LOOPBACK <<
2428 ENET_SERDES_TEST_MD_3_SHIFT));
2429 }
2430
2431 esr_reset(np);
2432 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2433 nw64(ctrl_reg, ctrl_val);
2434 nw64(test_cfg_reg, test_cfg_val);
2435
2436 /* Initialize all 4 lanes of the SERDES. */
2437 for (i = 0; i < 4; i++) {
2438 u32 rxtx_ctrl, glue0;
2439 int err;
2440
2441 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2442 if (err)
2443 return err;
2444 err = esr_read_glue0(np, i, &glue0);
2445 if (err)
2446 return err;
2447
2448 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2449 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2450 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2451
2452 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2453 ESR_GLUE_CTRL0_THCNT |
2454 ESR_GLUE_CTRL0_BLTIME);
2455 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2456 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2457 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2458 (BLTIME_300_CYCLES <<
2459 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2460
2461 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2462 if (err)
2463 return err;
2464 err = esr_write_glue0(np, i, glue0);
2465 if (err)
2466 return err;
2467 }
2468
2469
2470 sig = nr64(ESR_INT_SIGNALS);
2471 switch (np->port) {
2472 case 0:
2473 mask = ESR_INT_SIGNALS_P0_BITS;
2474 val = (ESR_INT_SRDY0_P0 |
2475 ESR_INT_DET0_P0 |
2476 ESR_INT_XSRDY_P0 |
2477 ESR_INT_XDP_P0_CH3 |
2478 ESR_INT_XDP_P0_CH2 |
2479 ESR_INT_XDP_P0_CH1 |
2480 ESR_INT_XDP_P0_CH0);
2481 break;
2482
2483 case 1:
2484 mask = ESR_INT_SIGNALS_P1_BITS;
2485 val = (ESR_INT_SRDY0_P1 |
2486 ESR_INT_DET0_P1 |
2487 ESR_INT_XSRDY_P1 |
2488 ESR_INT_XDP_P1_CH3 |
2489 ESR_INT_XDP_P1_CH2 |
2490 ESR_INT_XDP_P1_CH1 |
2491 ESR_INT_XDP_P1_CH0);
2492 break;
2493
2494 default:
2495 return -EINVAL;
2496 }
2497
2498 if ((sig & mask) != val) {
2499 int err;
2500 err = serdes_init_1g_serdes(np);
2501 if (!err) {
2502 np->flags &= ~NIU_FLAGS_10G;
2503 np->mac_xcvr = MAC_XCVR_PCS;
2504 } else {
2505 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2506 np->port);
2507 return -ENODEV;
2508 }
2509 }
2510
2511 return 0;
2512 }
2513
2514 static int niu_determine_phy_disposition(struct niu *np)
2515 {
2516 struct niu_parent *parent = np->parent;
2517 u8 plat_type = parent->plat_type;
2518 const struct niu_phy_template *tp;
2519 u32 phy_addr_off = 0;
2520
2521 if (plat_type == PLAT_TYPE_NIU) {
2522 switch (np->flags &
2523 (NIU_FLAGS_10G |
2524 NIU_FLAGS_FIBER |
2525 NIU_FLAGS_XCVR_SERDES)) {
2526 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2527 /* 10G Serdes */
2528 tp = &phy_template_niu_10g_serdes;
2529 break;
2530 case NIU_FLAGS_XCVR_SERDES:
2531 /* 1G Serdes */
2532 tp = &phy_template_niu_1g_serdes;
2533 break;
2534 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2535 /* 10G Fiber */
2536 default:
2537 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2538 tp = &phy_template_niu_10g_hotplug;
2539 if (np->port == 0)
2540 phy_addr_off = 8;
2541 if (np->port == 1)
2542 phy_addr_off = 12;
2543 } else {
2544 tp = &phy_template_niu_10g_fiber;
2545 phy_addr_off += np->port;
2546 }
2547 break;
2548 }
2549 } else {
2550 switch (np->flags &
2551 (NIU_FLAGS_10G |
2552 NIU_FLAGS_FIBER |
2553 NIU_FLAGS_XCVR_SERDES)) {
2554 case 0:
2555 /* 1G copper */
2556 tp = &phy_template_1g_copper;
2557 if (plat_type == PLAT_TYPE_VF_P0)
2558 phy_addr_off = 10;
2559 else if (plat_type == PLAT_TYPE_VF_P1)
2560 phy_addr_off = 26;
2561
2562 phy_addr_off += (np->port ^ 0x3);
2563 break;
2564
2565 case NIU_FLAGS_10G:
2566 /* 10G copper */
2567 tp = &phy_template_10g_copper;
2568 break;
2569
2570 case NIU_FLAGS_FIBER:
2571 /* 1G fiber */
2572 tp = &phy_template_1g_fiber;
2573 break;
2574
2575 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2576 /* 10G fiber */
2577 tp = &phy_template_10g_fiber;
2578 if (plat_type == PLAT_TYPE_VF_P0 ||
2579 plat_type == PLAT_TYPE_VF_P1)
2580 phy_addr_off = 8;
2581 phy_addr_off += np->port;
2582 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2583 tp = &phy_template_10g_fiber_hotplug;
2584 if (np->port == 0)
2585 phy_addr_off = 8;
2586 if (np->port == 1)
2587 phy_addr_off = 12;
2588 }
2589 break;
2590
2591 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2592 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2593 case NIU_FLAGS_XCVR_SERDES:
2594 switch(np->port) {
2595 case 0:
2596 case 1:
2597 tp = &phy_template_10g_serdes;
2598 break;
2599 case 2:
2600 case 3:
2601 tp = &phy_template_1g_rgmii;
2602 break;
2603 default:
2604 return -EINVAL;
2605 break;
2606 }
2607 phy_addr_off = niu_atca_port_num[np->port];
2608 break;
2609
2610 default:
2611 return -EINVAL;
2612 }
2613 }
2614
2615 np->phy_ops = tp->ops;
2616 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2617
2618 return 0;
2619 }
2620
2621 static int niu_init_link(struct niu *np)
2622 {
2623 struct niu_parent *parent = np->parent;
2624 int err, ignore;
2625
2626 if (parent->plat_type == PLAT_TYPE_NIU) {
2627 err = niu_xcvr_init(np);
2628 if (err)
2629 return err;
2630 msleep(200);
2631 }
2632 err = niu_serdes_init(np);
2633 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2634 return err;
2635 msleep(200);
2636 err = niu_xcvr_init(np);
2637 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2638 niu_link_status(np, &ignore);
2639 return 0;
2640 }
2641
2642 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2643 {
2644 u16 reg0 = addr[4] << 8 | addr[5];
2645 u16 reg1 = addr[2] << 8 | addr[3];
2646 u16 reg2 = addr[0] << 8 | addr[1];
2647
2648 if (np->flags & NIU_FLAGS_XMAC) {
2649 nw64_mac(XMAC_ADDR0, reg0);
2650 nw64_mac(XMAC_ADDR1, reg1);
2651 nw64_mac(XMAC_ADDR2, reg2);
2652 } else {
2653 nw64_mac(BMAC_ADDR0, reg0);
2654 nw64_mac(BMAC_ADDR1, reg1);
2655 nw64_mac(BMAC_ADDR2, reg2);
2656 }
2657 }
2658
2659 static int niu_num_alt_addr(struct niu *np)
2660 {
2661 if (np->flags & NIU_FLAGS_XMAC)
2662 return XMAC_NUM_ALT_ADDR;
2663 else
2664 return BMAC_NUM_ALT_ADDR;
2665 }
2666
2667 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2668 {
2669 u16 reg0 = addr[4] << 8 | addr[5];
2670 u16 reg1 = addr[2] << 8 | addr[3];
2671 u16 reg2 = addr[0] << 8 | addr[1];
2672
2673 if (index >= niu_num_alt_addr(np))
2674 return -EINVAL;
2675
2676 if (np->flags & NIU_FLAGS_XMAC) {
2677 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2678 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2679 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2680 } else {
2681 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2682 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2683 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2684 }
2685
2686 return 0;
2687 }
2688
2689 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2690 {
2691 unsigned long reg;
2692 u64 val, mask;
2693
2694 if (index >= niu_num_alt_addr(np))
2695 return -EINVAL;
2696
2697 if (np->flags & NIU_FLAGS_XMAC) {
2698 reg = XMAC_ADDR_CMPEN;
2699 mask = 1 << index;
2700 } else {
2701 reg = BMAC_ADDR_CMPEN;
2702 mask = 1 << (index + 1);
2703 }
2704
2705 val = nr64_mac(reg);
2706 if (on)
2707 val |= mask;
2708 else
2709 val &= ~mask;
2710 nw64_mac(reg, val);
2711
2712 return 0;
2713 }
2714
2715 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2716 int num, int mac_pref)
2717 {
2718 u64 val = nr64_mac(reg);
2719 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2720 val |= num;
2721 if (mac_pref)
2722 val |= HOST_INFO_MPR;
2723 nw64_mac(reg, val);
2724 }
2725
2726 static int __set_rdc_table_num(struct niu *np,
2727 int xmac_index, int bmac_index,
2728 int rdc_table_num, int mac_pref)
2729 {
2730 unsigned long reg;
2731
2732 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2733 return -EINVAL;
2734 if (np->flags & NIU_FLAGS_XMAC)
2735 reg = XMAC_HOST_INFO(xmac_index);
2736 else
2737 reg = BMAC_HOST_INFO(bmac_index);
2738 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2739 return 0;
2740 }
2741
2742 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2743 int mac_pref)
2744 {
2745 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2746 }
2747
2748 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2749 int mac_pref)
2750 {
2751 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2752 }
2753
2754 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2755 int table_num, int mac_pref)
2756 {
2757 if (idx >= niu_num_alt_addr(np))
2758 return -EINVAL;
2759 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2760 }
2761
2762 static u64 vlan_entry_set_parity(u64 reg_val)
2763 {
2764 u64 port01_mask;
2765 u64 port23_mask;
2766
2767 port01_mask = 0x00ff;
2768 port23_mask = 0xff00;
2769
2770 if (hweight64(reg_val & port01_mask) & 1)
2771 reg_val |= ENET_VLAN_TBL_PARITY0;
2772 else
2773 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2774
2775 if (hweight64(reg_val & port23_mask) & 1)
2776 reg_val |= ENET_VLAN_TBL_PARITY1;
2777 else
2778 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2779
2780 return reg_val;
2781 }
2782
2783 static void vlan_tbl_write(struct niu *np, unsigned long index,
2784 int port, int vpr, int rdc_table)
2785 {
2786 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2787
2788 reg_val &= ~((ENET_VLAN_TBL_VPR |
2789 ENET_VLAN_TBL_VLANRDCTBLN) <<
2790 ENET_VLAN_TBL_SHIFT(port));
2791 if (vpr)
2792 reg_val |= (ENET_VLAN_TBL_VPR <<
2793 ENET_VLAN_TBL_SHIFT(port));
2794 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2795
2796 reg_val = vlan_entry_set_parity(reg_val);
2797
2798 nw64(ENET_VLAN_TBL(index), reg_val);
2799 }
2800
2801 static void vlan_tbl_clear(struct niu *np)
2802 {
2803 int i;
2804
2805 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2806 nw64(ENET_VLAN_TBL(i), 0);
2807 }
2808
2809 static int tcam_wait_bit(struct niu *np, u64 bit)
2810 {
2811 int limit = 1000;
2812
2813 while (--limit > 0) {
2814 if (nr64(TCAM_CTL) & bit)
2815 break;
2816 udelay(1);
2817 }
2818 if (limit <= 0)
2819 return -ENODEV;
2820
2821 return 0;
2822 }
2823
2824 static int tcam_flush(struct niu *np, int index)
2825 {
2826 nw64(TCAM_KEY_0, 0x00);
2827 nw64(TCAM_KEY_MASK_0, 0xff);
2828 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2829
2830 return tcam_wait_bit(np, TCAM_CTL_STAT);
2831 }
2832
2833 #if 0
2834 static int tcam_read(struct niu *np, int index,
2835 u64 *key, u64 *mask)
2836 {
2837 int err;
2838
2839 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2840 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2841 if (!err) {
2842 key[0] = nr64(TCAM_KEY_0);
2843 key[1] = nr64(TCAM_KEY_1);
2844 key[2] = nr64(TCAM_KEY_2);
2845 key[3] = nr64(TCAM_KEY_3);
2846 mask[0] = nr64(TCAM_KEY_MASK_0);
2847 mask[1] = nr64(TCAM_KEY_MASK_1);
2848 mask[2] = nr64(TCAM_KEY_MASK_2);
2849 mask[3] = nr64(TCAM_KEY_MASK_3);
2850 }
2851 return err;
2852 }
2853 #endif
2854
2855 static int tcam_write(struct niu *np, int index,
2856 u64 *key, u64 *mask)
2857 {
2858 nw64(TCAM_KEY_0, key[0]);
2859 nw64(TCAM_KEY_1, key[1]);
2860 nw64(TCAM_KEY_2, key[2]);
2861 nw64(TCAM_KEY_3, key[3]);
2862 nw64(TCAM_KEY_MASK_0, mask[0]);
2863 nw64(TCAM_KEY_MASK_1, mask[1]);
2864 nw64(TCAM_KEY_MASK_2, mask[2]);
2865 nw64(TCAM_KEY_MASK_3, mask[3]);
2866 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2867
2868 return tcam_wait_bit(np, TCAM_CTL_STAT);
2869 }
2870
2871 #if 0
2872 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2873 {
2874 int err;
2875
2876 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2877 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2878 if (!err)
2879 *data = nr64(TCAM_KEY_1);
2880
2881 return err;
2882 }
2883 #endif
2884
2885 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2886 {
2887 nw64(TCAM_KEY_1, assoc_data);
2888 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2889
2890 return tcam_wait_bit(np, TCAM_CTL_STAT);
2891 }
2892
2893 static void tcam_enable(struct niu *np, int on)
2894 {
2895 u64 val = nr64(FFLP_CFG_1);
2896
2897 if (on)
2898 val &= ~FFLP_CFG_1_TCAM_DIS;
2899 else
2900 val |= FFLP_CFG_1_TCAM_DIS;
2901 nw64(FFLP_CFG_1, val);
2902 }
2903
2904 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2905 {
2906 u64 val = nr64(FFLP_CFG_1);
2907
2908 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2909 FFLP_CFG_1_CAMLAT |
2910 FFLP_CFG_1_CAMRATIO);
2911 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2912 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2913 nw64(FFLP_CFG_1, val);
2914
2915 val = nr64(FFLP_CFG_1);
2916 val |= FFLP_CFG_1_FFLPINITDONE;
2917 nw64(FFLP_CFG_1, val);
2918 }
2919
2920 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2921 int on)
2922 {
2923 unsigned long reg;
2924 u64 val;
2925
2926 if (class < CLASS_CODE_ETHERTYPE1 ||
2927 class > CLASS_CODE_ETHERTYPE2)
2928 return -EINVAL;
2929
2930 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2931 val = nr64(reg);
2932 if (on)
2933 val |= L2_CLS_VLD;
2934 else
2935 val &= ~L2_CLS_VLD;
2936 nw64(reg, val);
2937
2938 return 0;
2939 }
2940
2941 #if 0
2942 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2943 u64 ether_type)
2944 {
2945 unsigned long reg;
2946 u64 val;
2947
2948 if (class < CLASS_CODE_ETHERTYPE1 ||
2949 class > CLASS_CODE_ETHERTYPE2 ||
2950 (ether_type & ~(u64)0xffff) != 0)
2951 return -EINVAL;
2952
2953 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2954 val = nr64(reg);
2955 val &= ~L2_CLS_ETYPE;
2956 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2957 nw64(reg, val);
2958
2959 return 0;
2960 }
2961 #endif
2962
2963 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2964 int on)
2965 {
2966 unsigned long reg;
2967 u64 val;
2968
2969 if (class < CLASS_CODE_USER_PROG1 ||
2970 class > CLASS_CODE_USER_PROG4)
2971 return -EINVAL;
2972
2973 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2974 val = nr64(reg);
2975 if (on)
2976 val |= L3_CLS_VALID;
2977 else
2978 val &= ~L3_CLS_VALID;
2979 nw64(reg, val);
2980
2981 return 0;
2982 }
2983
2984 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2985 int ipv6, u64 protocol_id,
2986 u64 tos_mask, u64 tos_val)
2987 {
2988 unsigned long reg;
2989 u64 val;
2990
2991 if (class < CLASS_CODE_USER_PROG1 ||
2992 class > CLASS_CODE_USER_PROG4 ||
2993 (protocol_id & ~(u64)0xff) != 0 ||
2994 (tos_mask & ~(u64)0xff) != 0 ||
2995 (tos_val & ~(u64)0xff) != 0)
2996 return -EINVAL;
2997
2998 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2999 val = nr64(reg);
3000 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
3001 L3_CLS_TOSMASK | L3_CLS_TOS);
3002 if (ipv6)
3003 val |= L3_CLS_IPVER;
3004 val |= (protocol_id << L3_CLS_PID_SHIFT);
3005 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
3006 val |= (tos_val << L3_CLS_TOS_SHIFT);
3007 nw64(reg, val);
3008
3009 return 0;
3010 }
3011
3012 static int tcam_early_init(struct niu *np)
3013 {
3014 unsigned long i;
3015 int err;
3016
3017 tcam_enable(np, 0);
3018 tcam_set_lat_and_ratio(np,
3019 DEFAULT_TCAM_LATENCY,
3020 DEFAULT_TCAM_ACCESS_RATIO);
3021 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3022 err = tcam_user_eth_class_enable(np, i, 0);
3023 if (err)
3024 return err;
3025 }
3026 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3027 err = tcam_user_ip_class_enable(np, i, 0);
3028 if (err)
3029 return err;
3030 }
3031
3032 return 0;
3033 }
3034
3035 static int tcam_flush_all(struct niu *np)
3036 {
3037 unsigned long i;
3038
3039 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3040 int err = tcam_flush(np, i);
3041 if (err)
3042 return err;
3043 }
3044 return 0;
3045 }
3046
3047 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3048 {
3049 return ((u64)index | (num_entries == 1 ?
3050 HASH_TBL_ADDR_AUTOINC : 0));
3051 }
3052
3053 #if 0
3054 static int hash_read(struct niu *np, unsigned long partition,
3055 unsigned long index, unsigned long num_entries,
3056 u64 *data)
3057 {
3058 u64 val = hash_addr_regval(index, num_entries);
3059 unsigned long i;
3060
3061 if (partition >= FCRAM_NUM_PARTITIONS ||
3062 index + num_entries > FCRAM_SIZE)
3063 return -EINVAL;
3064
3065 nw64(HASH_TBL_ADDR(partition), val);
3066 for (i = 0; i < num_entries; i++)
3067 data[i] = nr64(HASH_TBL_DATA(partition));
3068
3069 return 0;
3070 }
3071 #endif
3072
3073 static int hash_write(struct niu *np, unsigned long partition,
3074 unsigned long index, unsigned long num_entries,
3075 u64 *data)
3076 {
3077 u64 val = hash_addr_regval(index, num_entries);
3078 unsigned long i;
3079
3080 if (partition >= FCRAM_NUM_PARTITIONS ||
3081 index + (num_entries * 8) > FCRAM_SIZE)
3082 return -EINVAL;
3083
3084 nw64(HASH_TBL_ADDR(partition), val);
3085 for (i = 0; i < num_entries; i++)
3086 nw64(HASH_TBL_DATA(partition), data[i]);
3087
3088 return 0;
3089 }
3090
3091 static void fflp_reset(struct niu *np)
3092 {
3093 u64 val;
3094
3095 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3096 udelay(10);
3097 nw64(FFLP_CFG_1, 0);
3098
3099 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3100 nw64(FFLP_CFG_1, val);
3101 }
3102
3103 static void fflp_set_timings(struct niu *np)
3104 {
3105 u64 val = nr64(FFLP_CFG_1);
3106
3107 val &= ~FFLP_CFG_1_FFLPINITDONE;
3108 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3109 nw64(FFLP_CFG_1, val);
3110
3111 val = nr64(FFLP_CFG_1);
3112 val |= FFLP_CFG_1_FFLPINITDONE;
3113 nw64(FFLP_CFG_1, val);
3114
3115 val = nr64(FCRAM_REF_TMR);
3116 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3117 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3118 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3119 nw64(FCRAM_REF_TMR, val);
3120 }
3121
3122 static int fflp_set_partition(struct niu *np, u64 partition,
3123 u64 mask, u64 base, int enable)
3124 {
3125 unsigned long reg;
3126 u64 val;
3127
3128 if (partition >= FCRAM_NUM_PARTITIONS ||
3129 (mask & ~(u64)0x1f) != 0 ||
3130 (base & ~(u64)0x1f) != 0)
3131 return -EINVAL;
3132
3133 reg = FLW_PRT_SEL(partition);
3134
3135 val = nr64(reg);
3136 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3137 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3138 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3139 if (enable)
3140 val |= FLW_PRT_SEL_EXT;
3141 nw64(reg, val);
3142
3143 return 0;
3144 }
3145
3146 static int fflp_disable_all_partitions(struct niu *np)
3147 {
3148 unsigned long i;
3149
3150 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3151 int err = fflp_set_partition(np, 0, 0, 0, 0);
3152 if (err)
3153 return err;
3154 }
3155 return 0;
3156 }
3157
3158 static void fflp_llcsnap_enable(struct niu *np, int on)
3159 {
3160 u64 val = nr64(FFLP_CFG_1);
3161
3162 if (on)
3163 val |= FFLP_CFG_1_LLCSNAP;
3164 else
3165 val &= ~FFLP_CFG_1_LLCSNAP;
3166 nw64(FFLP_CFG_1, val);
3167 }
3168
3169 static void fflp_errors_enable(struct niu *np, int on)
3170 {
3171 u64 val = nr64(FFLP_CFG_1);
3172
3173 if (on)
3174 val &= ~FFLP_CFG_1_ERRORDIS;
3175 else
3176 val |= FFLP_CFG_1_ERRORDIS;
3177 nw64(FFLP_CFG_1, val);
3178 }
3179
3180 static int fflp_hash_clear(struct niu *np)
3181 {
3182 struct fcram_hash_ipv4 ent;
3183 unsigned long i;
3184
3185 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3186 memset(&ent, 0, sizeof(ent));
3187 ent.header = HASH_HEADER_EXT;
3188
3189 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3190 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3191 if (err)
3192 return err;
3193 }
3194 return 0;
3195 }
3196
3197 static int fflp_early_init(struct niu *np)
3198 {
3199 struct niu_parent *parent;
3200 unsigned long flags;
3201 int err;
3202
3203 niu_lock_parent(np, flags);
3204
3205 parent = np->parent;
3206 err = 0;
3207 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3208 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3209 fflp_reset(np);
3210 fflp_set_timings(np);
3211 err = fflp_disable_all_partitions(np);
3212 if (err) {
3213 netif_printk(np, probe, KERN_DEBUG, np->dev,
3214 "fflp_disable_all_partitions failed, err=%d\n",
3215 err);
3216 goto out;
3217 }
3218 }
3219
3220 err = tcam_early_init(np);
3221 if (err) {
3222 netif_printk(np, probe, KERN_DEBUG, np->dev,
3223 "tcam_early_init failed, err=%d\n", err);
3224 goto out;
3225 }
3226 fflp_llcsnap_enable(np, 1);
3227 fflp_errors_enable(np, 0);
3228 nw64(H1POLY, 0);
3229 nw64(H2POLY, 0);
3230
3231 err = tcam_flush_all(np);
3232 if (err) {
3233 netif_printk(np, probe, KERN_DEBUG, np->dev,
3234 "tcam_flush_all failed, err=%d\n", err);
3235 goto out;
3236 }
3237 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3238 err = fflp_hash_clear(np);
3239 if (err) {
3240 netif_printk(np, probe, KERN_DEBUG, np->dev,
3241 "fflp_hash_clear failed, err=%d\n",
3242 err);
3243 goto out;
3244 }
3245 }
3246
3247 vlan_tbl_clear(np);
3248
3249 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3250 }
3251 out:
3252 niu_unlock_parent(np, flags);
3253 return err;
3254 }
3255
3256 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3257 {
3258 if (class_code < CLASS_CODE_USER_PROG1 ||
3259 class_code > CLASS_CODE_SCTP_IPV6)
3260 return -EINVAL;
3261
3262 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3263 return 0;
3264 }
3265
3266 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3267 {
3268 if (class_code < CLASS_CODE_USER_PROG1 ||
3269 class_code > CLASS_CODE_SCTP_IPV6)
3270 return -EINVAL;
3271
3272 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3273 return 0;
3274 }
3275
3276 /* Entries for the ports are interleaved in the TCAM */
3277 static u16 tcam_get_index(struct niu *np, u16 idx)
3278 {
3279 /* One entry reserved for IP fragment rule */
3280 if (idx >= (np->clas.tcam_sz - 1))
3281 idx = 0;
3282 return (np->clas.tcam_top + ((idx+1) * np->parent->num_ports));
3283 }
3284
3285 static u16 tcam_get_size(struct niu *np)
3286 {
3287 /* One entry reserved for IP fragment rule */
3288 return np->clas.tcam_sz - 1;
3289 }
3290
3291 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3292 {
3293 /* One entry reserved for IP fragment rule */
3294 return np->clas.tcam_valid_entries - 1;
3295 }
3296
3297 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3298 u32 offset, u32 size)
3299 {
3300 int i = skb_shinfo(skb)->nr_frags;
3301 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3302
3303 frag->page = page;
3304 frag->page_offset = offset;
3305 frag->size = size;
3306
3307 skb->len += size;
3308 skb->data_len += size;
3309 skb->truesize += size;
3310
3311 skb_shinfo(skb)->nr_frags = i + 1;
3312 }
3313
3314 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3315 {
3316 a >>= PAGE_SHIFT;
3317 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3318
3319 return (a & (MAX_RBR_RING_SIZE - 1));
3320 }
3321
3322 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3323 struct page ***link)
3324 {
3325 unsigned int h = niu_hash_rxaddr(rp, addr);
3326 struct page *p, **pp;
3327
3328 addr &= PAGE_MASK;
3329 pp = &rp->rxhash[h];
3330 for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3331 if (p->index == addr) {
3332 *link = pp;
3333 break;
3334 }
3335 }
3336
3337 return p;
3338 }
3339
3340 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3341 {
3342 unsigned int h = niu_hash_rxaddr(rp, base);
3343
3344 page->index = base;
3345 page->mapping = (struct address_space *) rp->rxhash[h];
3346 rp->rxhash[h] = page;
3347 }
3348
3349 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3350 gfp_t mask, int start_index)
3351 {
3352 struct page *page;
3353 u64 addr;
3354 int i;
3355
3356 page = alloc_page(mask);
3357 if (!page)
3358 return -ENOMEM;
3359
3360 addr = np->ops->map_page(np->device, page, 0,
3361 PAGE_SIZE, DMA_FROM_DEVICE);
3362
3363 niu_hash_page(rp, page, addr);
3364 if (rp->rbr_blocks_per_page > 1)
3365 atomic_add(rp->rbr_blocks_per_page - 1,
3366 &compound_head(page)->_count);
3367
3368 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3369 __le32 *rbr = &rp->rbr[start_index + i];
3370
3371 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3372 addr += rp->rbr_block_size;
3373 }
3374
3375 return 0;
3376 }
3377
3378 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3379 {
3380 int index = rp->rbr_index;
3381
3382 rp->rbr_pending++;
3383 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3384 int err = niu_rbr_add_page(np, rp, mask, index);
3385
3386 if (unlikely(err)) {
3387 rp->rbr_pending--;
3388 return;
3389 }
3390
3391 rp->rbr_index += rp->rbr_blocks_per_page;
3392 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3393 if (rp->rbr_index == rp->rbr_table_size)
3394 rp->rbr_index = 0;
3395
3396 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3397 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3398 rp->rbr_pending = 0;
3399 }
3400 }
3401 }
3402
3403 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3404 {
3405 unsigned int index = rp->rcr_index;
3406 int num_rcr = 0;
3407
3408 rp->rx_dropped++;
3409 while (1) {
3410 struct page *page, **link;
3411 u64 addr, val;
3412 u32 rcr_size;
3413
3414 num_rcr++;
3415
3416 val = le64_to_cpup(&rp->rcr[index]);
3417 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3418 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3419 page = niu_find_rxpage(rp, addr, &link);
3420
3421 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3422 RCR_ENTRY_PKTBUFSZ_SHIFT];
3423 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3424 *link = (struct page *) page->mapping;
3425 np->ops->unmap_page(np->device, page->index,
3426 PAGE_SIZE, DMA_FROM_DEVICE);
3427 page->index = 0;
3428 page->mapping = NULL;
3429 __free_page(page);
3430 rp->rbr_refill_pending++;
3431 }
3432
3433 index = NEXT_RCR(rp, index);
3434 if (!(val & RCR_ENTRY_MULTI))
3435 break;
3436
3437 }
3438 rp->rcr_index = index;
3439
3440 return num_rcr;
3441 }
3442
3443 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3444 struct rx_ring_info *rp)
3445 {
3446 unsigned int index = rp->rcr_index;
3447 struct rx_pkt_hdr1 *rh;
3448 struct sk_buff *skb;
3449 int len, num_rcr;
3450
3451 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3452 if (unlikely(!skb))
3453 return niu_rx_pkt_ignore(np, rp);
3454
3455 num_rcr = 0;
3456 while (1) {
3457 struct page *page, **link;
3458 u32 rcr_size, append_size;
3459 u64 addr, val, off;
3460
3461 num_rcr++;
3462
3463 val = le64_to_cpup(&rp->rcr[index]);
3464
3465 len = (val & RCR_ENTRY_L2_LEN) >>
3466 RCR_ENTRY_L2_LEN_SHIFT;
3467 len -= ETH_FCS_LEN;
3468
3469 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3470 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3471 page = niu_find_rxpage(rp, addr, &link);
3472
3473 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3474 RCR_ENTRY_PKTBUFSZ_SHIFT];
3475
3476 off = addr & ~PAGE_MASK;
3477 append_size = rcr_size;
3478 if (num_rcr == 1) {
3479 int ptype;
3480
3481 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3482 if ((ptype == RCR_PKT_TYPE_TCP ||
3483 ptype == RCR_PKT_TYPE_UDP) &&
3484 !(val & (RCR_ENTRY_NOPORT |
3485 RCR_ENTRY_ERROR)))
3486 skb->ip_summed = CHECKSUM_UNNECESSARY;
3487 else
3488 skb->ip_summed = CHECKSUM_NONE;
3489 } else if (!(val & RCR_ENTRY_MULTI))
3490 append_size = len - skb->len;
3491
3492 niu_rx_skb_append(skb, page, off, append_size);
3493 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3494 *link = (struct page *) page->mapping;
3495 np->ops->unmap_page(np->device, page->index,
3496 PAGE_SIZE, DMA_FROM_DEVICE);
3497 page->index = 0;
3498 page->mapping = NULL;
3499 rp->rbr_refill_pending++;
3500 } else
3501 get_page(page);
3502
3503 index = NEXT_RCR(rp, index);
3504 if (!(val & RCR_ENTRY_MULTI))
3505 break;
3506
3507 }
3508 rp->rcr_index = index;
3509
3510 len += sizeof(*rh);
3511 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3512 __pskb_pull_tail(skb, len);
3513
3514 rh = (struct rx_pkt_hdr1 *) skb->data;
3515 if (np->dev->features & NETIF_F_RXHASH)
3516 skb->rxhash = ((u32)rh->hashval2_0 << 24 |
3517 (u32)rh->hashval2_1 << 16 |
3518 (u32)rh->hashval1_1 << 8 |
3519 (u32)rh->hashval1_2 << 0);
3520 skb_pull(skb, sizeof(*rh));
3521
3522 rp->rx_packets++;
3523 rp->rx_bytes += skb->len;
3524
3525 skb->protocol = eth_type_trans(skb, np->dev);
3526 skb_record_rx_queue(skb, rp->rx_channel);
3527 napi_gro_receive(napi, skb);
3528
3529 return num_rcr;
3530 }
3531
3532 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3533 {
3534 int blocks_per_page = rp->rbr_blocks_per_page;
3535 int err, index = rp->rbr_index;
3536
3537 err = 0;
3538 while (index < (rp->rbr_table_size - blocks_per_page)) {
3539 err = niu_rbr_add_page(np, rp, mask, index);
3540 if (err)
3541 break;
3542
3543 index += blocks_per_page;
3544 }
3545
3546 rp->rbr_index = index;
3547 return err;
3548 }
3549
3550 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3551 {
3552 int i;
3553
3554 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3555 struct page *page;
3556
3557 page = rp->rxhash[i];
3558 while (page) {
3559 struct page *next = (struct page *) page->mapping;
3560 u64 base = page->index;
3561
3562 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3563 DMA_FROM_DEVICE);
3564 page->index = 0;
3565 page->mapping = NULL;
3566
3567 __free_page(page);
3568
3569 page = next;
3570 }
3571 }
3572
3573 for (i = 0; i < rp->rbr_table_size; i++)
3574 rp->rbr[i] = cpu_to_le32(0);
3575 rp->rbr_index = 0;
3576 }
3577
3578 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3579 {
3580 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3581 struct sk_buff *skb = tb->skb;
3582 struct tx_pkt_hdr *tp;
3583 u64 tx_flags;
3584 int i, len;
3585
3586 tp = (struct tx_pkt_hdr *) skb->data;
3587 tx_flags = le64_to_cpup(&tp->flags);
3588
3589 rp->tx_packets++;
3590 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3591 ((tx_flags & TXHDR_PAD) / 2));
3592
3593 len = skb_headlen(skb);
3594 np->ops->unmap_single(np->device, tb->mapping,
3595 len, DMA_TO_DEVICE);
3596
3597 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3598 rp->mark_pending--;
3599
3600 tb->skb = NULL;
3601 do {
3602 idx = NEXT_TX(rp, idx);
3603 len -= MAX_TX_DESC_LEN;
3604 } while (len > 0);
3605
3606 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3607 tb = &rp->tx_buffs[idx];
3608 BUG_ON(tb->skb != NULL);
3609 np->ops->unmap_page(np->device, tb->mapping,
3610 skb_shinfo(skb)->frags[i].size,
3611 DMA_TO_DEVICE);
3612 idx = NEXT_TX(rp, idx);
3613 }
3614
3615 dev_kfree_skb(skb);
3616
3617 return idx;
3618 }
3619
3620 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3621
3622 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3623 {
3624 struct netdev_queue *txq;
3625 u16 pkt_cnt, tmp;
3626 int cons, index;
3627 u64 cs;
3628
3629 index = (rp - np->tx_rings);
3630 txq = netdev_get_tx_queue(np->dev, index);
3631
3632 cs = rp->tx_cs;
3633 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3634 goto out;
3635
3636 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3637 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3638 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3639
3640 rp->last_pkt_cnt = tmp;
3641
3642 cons = rp->cons;
3643
3644 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3645 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3646
3647 while (pkt_cnt--)
3648 cons = release_tx_packet(np, rp, cons);
3649
3650 rp->cons = cons;
3651 smp_mb();
3652
3653 out:
3654 if (unlikely(netif_tx_queue_stopped(txq) &&
3655 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3656 __netif_tx_lock(txq, smp_processor_id());
3657 if (netif_tx_queue_stopped(txq) &&
3658 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3659 netif_tx_wake_queue(txq);
3660 __netif_tx_unlock(txq);
3661 }
3662 }
3663
3664 static inline void niu_sync_rx_discard_stats(struct niu *np,
3665 struct rx_ring_info *rp,
3666 const int limit)
3667 {
3668 /* This elaborate scheme is needed for reading the RX discard
3669 * counters, as they are only 16-bit and can overflow quickly,
3670 * and because the overflow indication bit is not usable as
3671 * the counter value does not wrap, but remains at max value
3672 * 0xFFFF.
3673 *
3674 * In theory and in practice counters can be lost in between
3675 * reading nr64() and clearing the counter nw64(). For this
3676 * reason, the number of counter clearings nw64() is
3677 * limited/reduced though the limit parameter.
3678 */
3679 int rx_channel = rp->rx_channel;
3680 u32 misc, wred;
3681
3682 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3683 * following discard events: IPP (Input Port Process),
3684 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3685 * Block Ring) prefetch buffer is empty.
3686 */
3687 misc = nr64(RXMISC(rx_channel));
3688 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3689 nw64(RXMISC(rx_channel), 0);
3690 rp->rx_errors += misc & RXMISC_COUNT;
3691
3692 if (unlikely(misc & RXMISC_OFLOW))
3693 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3694 rx_channel);
3695
3696 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3697 "rx-%d: MISC drop=%u over=%u\n",
3698 rx_channel, misc, misc-limit);
3699 }
3700
3701 /* WRED (Weighted Random Early Discard) by hardware */
3702 wred = nr64(RED_DIS_CNT(rx_channel));
3703 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3704 nw64(RED_DIS_CNT(rx_channel), 0);
3705 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3706
3707 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3708 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3709
3710 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3711 "rx-%d: WRED drop=%u over=%u\n",
3712 rx_channel, wred, wred-limit);
3713 }
3714 }
3715
3716 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3717 struct rx_ring_info *rp, int budget)
3718 {
3719 int qlen, rcr_done = 0, work_done = 0;
3720 struct rxdma_mailbox *mbox = rp->mbox;
3721 u64 stat;
3722
3723 #if 1
3724 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3725 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3726 #else
3727 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3728 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3729 #endif
3730 mbox->rx_dma_ctl_stat = 0;
3731 mbox->rcrstat_a = 0;
3732
3733 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3734 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3735 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3736
3737 rcr_done = work_done = 0;
3738 qlen = min(qlen, budget);
3739 while (work_done < qlen) {
3740 rcr_done += niu_process_rx_pkt(napi, np, rp);
3741 work_done++;
3742 }
3743
3744 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3745 unsigned int i;
3746
3747 for (i = 0; i < rp->rbr_refill_pending; i++)
3748 niu_rbr_refill(np, rp, GFP_ATOMIC);
3749 rp->rbr_refill_pending = 0;
3750 }
3751
3752 stat = (RX_DMA_CTL_STAT_MEX |
3753 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3754 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3755
3756 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3757
3758 /* Only sync discards stats when qlen indicate potential for drops */
3759 if (qlen > 10)
3760 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3761
3762 return work_done;
3763 }
3764
3765 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3766 {
3767 u64 v0 = lp->v0;
3768 u32 tx_vec = (v0 >> 32);
3769 u32 rx_vec = (v0 & 0xffffffff);
3770 int i, work_done = 0;
3771
3772 netif_printk(np, intr, KERN_DEBUG, np->dev,
3773 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3774
3775 for (i = 0; i < np->num_tx_rings; i++) {
3776 struct tx_ring_info *rp = &np->tx_rings[i];
3777 if (tx_vec & (1 << rp->tx_channel))
3778 niu_tx_work(np, rp);
3779 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3780 }
3781
3782 for (i = 0; i < np->num_rx_rings; i++) {
3783 struct rx_ring_info *rp = &np->rx_rings[i];
3784
3785 if (rx_vec & (1 << rp->rx_channel)) {
3786 int this_work_done;
3787
3788 this_work_done = niu_rx_work(&lp->napi, np, rp,
3789 budget);
3790
3791 budget -= this_work_done;
3792 work_done += this_work_done;
3793 }
3794 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3795 }
3796
3797 return work_done;
3798 }
3799
3800 static int niu_poll(struct napi_struct *napi, int budget)
3801 {
3802 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3803 struct niu *np = lp->np;
3804 int work_done;
3805
3806 work_done = niu_poll_core(np, lp, budget);
3807
3808 if (work_done < budget) {
3809 napi_complete(napi);
3810 niu_ldg_rearm(np, lp, 1);
3811 }
3812 return work_done;
3813 }
3814
3815 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3816 u64 stat)
3817 {
3818 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3819
3820 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3821 pr_cont("RBR_TMOUT ");
3822 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3823 pr_cont("RSP_CNT ");
3824 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3825 pr_cont("BYTE_EN_BUS ");
3826 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3827 pr_cont("RSP_DAT ");
3828 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3829 pr_cont("RCR_ACK ");
3830 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3831 pr_cont("RCR_SHA_PAR ");
3832 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3833 pr_cont("RBR_PRE_PAR ");
3834 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3835 pr_cont("CONFIG ");
3836 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3837 pr_cont("RCRINCON ");
3838 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3839 pr_cont("RCRFULL ");
3840 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3841 pr_cont("RBRFULL ");
3842 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3843 pr_cont("RBRLOGPAGE ");
3844 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3845 pr_cont("CFIGLOGPAGE ");
3846 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3847 pr_cont("DC_FIDO ");
3848
3849 pr_cont(")\n");
3850 }
3851
3852 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3853 {
3854 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3855 int err = 0;
3856
3857
3858 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3859 RX_DMA_CTL_STAT_PORT_FATAL))
3860 err = -EINVAL;
3861
3862 if (err) {
3863 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3864 rp->rx_channel,
3865 (unsigned long long) stat);
3866
3867 niu_log_rxchan_errors(np, rp, stat);
3868 }
3869
3870 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3871 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3872
3873 return err;
3874 }
3875
3876 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3877 u64 cs)
3878 {
3879 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3880
3881 if (cs & TX_CS_MBOX_ERR)
3882 pr_cont("MBOX ");
3883 if (cs & TX_CS_PKT_SIZE_ERR)
3884 pr_cont("PKT_SIZE ");
3885 if (cs & TX_CS_TX_RING_OFLOW)
3886 pr_cont("TX_RING_OFLOW ");
3887 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3888 pr_cont("PREF_BUF_PAR ");
3889 if (cs & TX_CS_NACK_PREF)
3890 pr_cont("NACK_PREF ");
3891 if (cs & TX_CS_NACK_PKT_RD)
3892 pr_cont("NACK_PKT_RD ");
3893 if (cs & TX_CS_CONF_PART_ERR)
3894 pr_cont("CONF_PART ");
3895 if (cs & TX_CS_PKT_PRT_ERR)
3896 pr_cont("PKT_PTR ");
3897
3898 pr_cont(")\n");
3899 }
3900
3901 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3902 {
3903 u64 cs, logh, logl;
3904
3905 cs = nr64(TX_CS(rp->tx_channel));
3906 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3907 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3908
3909 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3910 rp->tx_channel,
3911 (unsigned long long)cs,
3912 (unsigned long long)logh,
3913 (unsigned long long)logl);
3914
3915 niu_log_txchan_errors(np, rp, cs);
3916
3917 return -ENODEV;
3918 }
3919
3920 static int niu_mif_interrupt(struct niu *np)
3921 {
3922 u64 mif_status = nr64(MIF_STATUS);
3923 int phy_mdint = 0;
3924
3925 if (np->flags & NIU_FLAGS_XMAC) {
3926 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3927
3928 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3929 phy_mdint = 1;
3930 }
3931
3932 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3933 (unsigned long long)mif_status, phy_mdint);
3934
3935 return -ENODEV;
3936 }
3937
3938 static void niu_xmac_interrupt(struct niu *np)
3939 {
3940 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3941 u64 val;
3942
3943 val = nr64_mac(XTXMAC_STATUS);
3944 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3945 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3946 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3947 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3948 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3949 mp->tx_fifo_errors++;
3950 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3951 mp->tx_overflow_errors++;
3952 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3953 mp->tx_max_pkt_size_errors++;
3954 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3955 mp->tx_underflow_errors++;
3956
3957 val = nr64_mac(XRXMAC_STATUS);
3958 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3959 mp->rx_local_faults++;
3960 if (val & XRXMAC_STATUS_RFLT_DET)
3961 mp->rx_remote_faults++;
3962 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3963 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3964 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3965 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3966 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3967 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3968 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3969 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3970 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3971 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3972 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3973 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3974 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3975 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3976 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3977 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3978 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3979 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3980 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3981 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3982 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3983 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3984 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3985 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3986 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3987 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3988 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3989 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3990 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3991 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3992 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3993 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3994 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3995 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3996 if (val & XRXMAC_STATUS_RXUFLOW)
3997 mp->rx_underflows++;
3998 if (val & XRXMAC_STATUS_RXOFLOW)
3999 mp->rx_overflows++;
4000
4001 val = nr64_mac(XMAC_FC_STAT);
4002 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
4003 mp->pause_off_state++;
4004 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
4005 mp->pause_on_state++;
4006 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
4007 mp->pause_received++;
4008 }
4009
4010 static void niu_bmac_interrupt(struct niu *np)
4011 {
4012 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4013 u64 val;
4014
4015 val = nr64_mac(BTXMAC_STATUS);
4016 if (val & BTXMAC_STATUS_UNDERRUN)
4017 mp->tx_underflow_errors++;
4018 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
4019 mp->tx_max_pkt_size_errors++;
4020 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4021 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4022 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4023 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4024
4025 val = nr64_mac(BRXMAC_STATUS);
4026 if (val & BRXMAC_STATUS_OVERFLOW)
4027 mp->rx_overflows++;
4028 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4029 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4030 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4031 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4032 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4033 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4034 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4035 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4036
4037 val = nr64_mac(BMAC_CTRL_STATUS);
4038 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4039 mp->pause_off_state++;
4040 if (val & BMAC_CTRL_STATUS_PAUSE)
4041 mp->pause_on_state++;
4042 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4043 mp->pause_received++;
4044 }
4045
4046 static int niu_mac_interrupt(struct niu *np)
4047 {
4048 if (np->flags & NIU_FLAGS_XMAC)
4049 niu_xmac_interrupt(np);
4050 else
4051 niu_bmac_interrupt(np);
4052
4053 return 0;
4054 }
4055
4056 static void niu_log_device_error(struct niu *np, u64 stat)
4057 {
4058 netdev_err(np->dev, "Core device errors ( ");
4059
4060 if (stat & SYS_ERR_MASK_META2)
4061 pr_cont("META2 ");
4062 if (stat & SYS_ERR_MASK_META1)
4063 pr_cont("META1 ");
4064 if (stat & SYS_ERR_MASK_PEU)
4065 pr_cont("PEU ");
4066 if (stat & SYS_ERR_MASK_TXC)
4067 pr_cont("TXC ");
4068 if (stat & SYS_ERR_MASK_RDMC)
4069 pr_cont("RDMC ");
4070 if (stat & SYS_ERR_MASK_TDMC)
4071 pr_cont("TDMC ");
4072 if (stat & SYS_ERR_MASK_ZCP)
4073 pr_cont("ZCP ");
4074 if (stat & SYS_ERR_MASK_FFLP)
4075 pr_cont("FFLP ");
4076 if (stat & SYS_ERR_MASK_IPP)
4077 pr_cont("IPP ");
4078 if (stat & SYS_ERR_MASK_MAC)
4079 pr_cont("MAC ");
4080 if (stat & SYS_ERR_MASK_SMX)
4081 pr_cont("SMX ");
4082
4083 pr_cont(")\n");
4084 }
4085
4086 static int niu_device_error(struct niu *np)
4087 {
4088 u64 stat = nr64(SYS_ERR_STAT);
4089
4090 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4091 (unsigned long long)stat);
4092
4093 niu_log_device_error(np, stat);
4094
4095 return -ENODEV;
4096 }
4097
4098 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4099 u64 v0, u64 v1, u64 v2)
4100 {
4101
4102 int i, err = 0;
4103
4104 lp->v0 = v0;
4105 lp->v1 = v1;
4106 lp->v2 = v2;
4107
4108 if (v1 & 0x00000000ffffffffULL) {
4109 u32 rx_vec = (v1 & 0xffffffff);
4110
4111 for (i = 0; i < np->num_rx_rings; i++) {
4112 struct rx_ring_info *rp = &np->rx_rings[i];
4113
4114 if (rx_vec & (1 << rp->rx_channel)) {
4115 int r = niu_rx_error(np, rp);
4116 if (r) {
4117 err = r;
4118 } else {
4119 if (!v0)
4120 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4121 RX_DMA_CTL_STAT_MEX);
4122 }
4123 }
4124 }
4125 }
4126 if (v1 & 0x7fffffff00000000ULL) {
4127 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4128
4129 for (i = 0; i < np->num_tx_rings; i++) {
4130 struct tx_ring_info *rp = &np->tx_rings[i];
4131
4132 if (tx_vec & (1 << rp->tx_channel)) {
4133 int r = niu_tx_error(np, rp);
4134 if (r)
4135 err = r;
4136 }
4137 }
4138 }
4139 if ((v0 | v1) & 0x8000000000000000ULL) {
4140 int r = niu_mif_interrupt(np);
4141 if (r)
4142 err = r;
4143 }
4144 if (v2) {
4145 if (v2 & 0x01ef) {
4146 int r = niu_mac_interrupt(np);
4147 if (r)
4148 err = r;
4149 }
4150 if (v2 & 0x0210) {
4151 int r = niu_device_error(np);
4152 if (r)
4153 err = r;
4154 }
4155 }
4156
4157 if (err)
4158 niu_enable_interrupts(np, 0);
4159
4160 return err;
4161 }
4162
4163 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4164 int ldn)
4165 {
4166 struct rxdma_mailbox *mbox = rp->mbox;
4167 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4168
4169 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4170 RX_DMA_CTL_STAT_RCRTO);
4171 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4172
4173 netif_printk(np, intr, KERN_DEBUG, np->dev,
4174 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4175 }
4176
4177 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4178 int ldn)
4179 {
4180 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4181
4182 netif_printk(np, intr, KERN_DEBUG, np->dev,
4183 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4184 }
4185
4186 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4187 {
4188 struct niu_parent *parent = np->parent;
4189 u32 rx_vec, tx_vec;
4190 int i;
4191
4192 tx_vec = (v0 >> 32);
4193 rx_vec = (v0 & 0xffffffff);
4194
4195 for (i = 0; i < np->num_rx_rings; i++) {
4196 struct rx_ring_info *rp = &np->rx_rings[i];
4197 int ldn = LDN_RXDMA(rp->rx_channel);
4198
4199 if (parent->ldg_map[ldn] != ldg)
4200 continue;
4201
4202 nw64(LD_IM0(ldn), LD_IM0_MASK);
4203 if (rx_vec & (1 << rp->rx_channel))
4204 niu_rxchan_intr(np, rp, ldn);
4205 }
4206
4207 for (i = 0; i < np->num_tx_rings; i++) {
4208 struct tx_ring_info *rp = &np->tx_rings[i];
4209 int ldn = LDN_TXDMA(rp->tx_channel);
4210
4211 if (parent->ldg_map[ldn] != ldg)
4212 continue;
4213
4214 nw64(LD_IM0(ldn), LD_IM0_MASK);
4215 if (tx_vec & (1 << rp->tx_channel))
4216 niu_txchan_intr(np, rp, ldn);
4217 }
4218 }
4219
4220 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4221 u64 v0, u64 v1, u64 v2)
4222 {
4223 if (likely(napi_schedule_prep(&lp->napi))) {
4224 lp->v0 = v0;
4225 lp->v1 = v1;
4226 lp->v2 = v2;
4227 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4228 __napi_schedule(&lp->napi);
4229 }
4230 }
4231
4232 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4233 {
4234 struct niu_ldg *lp = dev_id;
4235 struct niu *np = lp->np;
4236 int ldg = lp->ldg_num;
4237 unsigned long flags;
4238 u64 v0, v1, v2;
4239
4240 if (netif_msg_intr(np))
4241 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4242 __func__, lp, ldg);
4243
4244 spin_lock_irqsave(&np->lock, flags);
4245
4246 v0 = nr64(LDSV0(ldg));
4247 v1 = nr64(LDSV1(ldg));
4248 v2 = nr64(LDSV2(ldg));
4249
4250 if (netif_msg_intr(np))
4251 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4252 (unsigned long long) v0,
4253 (unsigned long long) v1,
4254 (unsigned long long) v2);
4255
4256 if (unlikely(!v0 && !v1 && !v2)) {
4257 spin_unlock_irqrestore(&np->lock, flags);
4258 return IRQ_NONE;
4259 }
4260
4261 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4262 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4263 if (err)
4264 goto out;
4265 }
4266 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4267 niu_schedule_napi(np, lp, v0, v1, v2);
4268 else
4269 niu_ldg_rearm(np, lp, 1);
4270 out:
4271 spin_unlock_irqrestore(&np->lock, flags);
4272
4273 return IRQ_HANDLED;
4274 }
4275
4276 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4277 {
4278 if (rp->mbox) {
4279 np->ops->free_coherent(np->device,
4280 sizeof(struct rxdma_mailbox),
4281 rp->mbox, rp->mbox_dma);
4282 rp->mbox = NULL;
4283 }
4284 if (rp->rcr) {
4285 np->ops->free_coherent(np->device,
4286 MAX_RCR_RING_SIZE * sizeof(__le64),
4287 rp->rcr, rp->rcr_dma);
4288 rp->rcr = NULL;
4289 rp->rcr_table_size = 0;
4290 rp->rcr_index = 0;
4291 }
4292 if (rp->rbr) {
4293 niu_rbr_free(np, rp);
4294
4295 np->ops->free_coherent(np->device,
4296 MAX_RBR_RING_SIZE * sizeof(__le32),
4297 rp->rbr, rp->rbr_dma);
4298 rp->rbr = NULL;
4299 rp->rbr_table_size = 0;
4300 rp->rbr_index = 0;
4301 }
4302 kfree(rp->rxhash);
4303 rp->rxhash = NULL;
4304 }
4305
4306 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4307 {
4308 if (rp->mbox) {
4309 np->ops->free_coherent(np->device,
4310 sizeof(struct txdma_mailbox),
4311 rp->mbox, rp->mbox_dma);
4312 rp->mbox = NULL;
4313 }
4314 if (rp->descr) {
4315 int i;
4316
4317 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4318 if (rp->tx_buffs[i].skb)
4319 (void) release_tx_packet(np, rp, i);
4320 }
4321
4322 np->ops->free_coherent(np->device,
4323 MAX_TX_RING_SIZE * sizeof(__le64),
4324 rp->descr, rp->descr_dma);
4325 rp->descr = NULL;
4326 rp->pending = 0;
4327 rp->prod = 0;
4328 rp->cons = 0;
4329 rp->wrap_bit = 0;
4330 }
4331 }
4332
4333 static void niu_free_channels(struct niu *np)
4334 {
4335 int i;
4336
4337 if (np->rx_rings) {
4338 for (i = 0; i < np->num_rx_rings; i++) {
4339 struct rx_ring_info *rp = &np->rx_rings[i];
4340
4341 niu_free_rx_ring_info(np, rp);
4342 }
4343 kfree(np->rx_rings);
4344 np->rx_rings = NULL;
4345 np->num_rx_rings = 0;
4346 }
4347
4348 if (np->tx_rings) {
4349 for (i = 0; i < np->num_tx_rings; i++) {
4350 struct tx_ring_info *rp = &np->tx_rings[i];
4351
4352 niu_free_tx_ring_info(np, rp);
4353 }
4354 kfree(np->tx_rings);
4355 np->tx_rings = NULL;
4356 np->num_tx_rings = 0;
4357 }
4358 }
4359
4360 static int niu_alloc_rx_ring_info(struct niu *np,
4361 struct rx_ring_info *rp)
4362 {
4363 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4364
4365 rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4366 GFP_KERNEL);
4367 if (!rp->rxhash)
4368 return -ENOMEM;
4369
4370 rp->mbox = np->ops->alloc_coherent(np->device,
4371 sizeof(struct rxdma_mailbox),
4372 &rp->mbox_dma, GFP_KERNEL);
4373 if (!rp->mbox)
4374 return -ENOMEM;
4375 if ((unsigned long)rp->mbox & (64UL - 1)) {
4376 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4377 rp->mbox);
4378 return -EINVAL;
4379 }
4380
4381 rp->rcr = np->ops->alloc_coherent(np->device,
4382 MAX_RCR_RING_SIZE * sizeof(__le64),
4383 &rp->rcr_dma, GFP_KERNEL);
4384 if (!rp->rcr)
4385 return -ENOMEM;
4386 if ((unsigned long)rp->rcr & (64UL - 1)) {
4387 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4388 rp->rcr);
4389 return -EINVAL;
4390 }
4391 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4392 rp->rcr_index = 0;
4393
4394 rp->rbr = np->ops->alloc_coherent(np->device,
4395 MAX_RBR_RING_SIZE * sizeof(__le32),
4396 &rp->rbr_dma, GFP_KERNEL);
4397 if (!rp->rbr)
4398 return -ENOMEM;
4399 if ((unsigned long)rp->rbr & (64UL - 1)) {
4400 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4401 rp->rbr);
4402 return -EINVAL;
4403 }
4404 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4405 rp->rbr_index = 0;
4406 rp->rbr_pending = 0;
4407
4408 return 0;
4409 }
4410
4411 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4412 {
4413 int mtu = np->dev->mtu;
4414
4415 /* These values are recommended by the HW designers for fair
4416 * utilization of DRR amongst the rings.
4417 */
4418 rp->max_burst = mtu + 32;
4419 if (rp->max_burst > 4096)
4420 rp->max_burst = 4096;
4421 }
4422
4423 static int niu_alloc_tx_ring_info(struct niu *np,
4424 struct tx_ring_info *rp)
4425 {
4426 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4427
4428 rp->mbox = np->ops->alloc_coherent(np->device,
4429 sizeof(struct txdma_mailbox),
4430 &rp->mbox_dma, GFP_KERNEL);
4431 if (!rp->mbox)
4432 return -ENOMEM;
4433 if ((unsigned long)rp->mbox & (64UL - 1)) {
4434 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4435 rp->mbox);
4436 return -EINVAL;
4437 }
4438
4439 rp->descr = np->ops->alloc_coherent(np->device,
4440 MAX_TX_RING_SIZE * sizeof(__le64),
4441 &rp->descr_dma, GFP_KERNEL);
4442 if (!rp->descr)
4443 return -ENOMEM;
4444 if ((unsigned long)rp->descr & (64UL - 1)) {
4445 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4446 rp->descr);
4447 return -EINVAL;
4448 }
4449
4450 rp->pending = MAX_TX_RING_SIZE;
4451 rp->prod = 0;
4452 rp->cons = 0;
4453 rp->wrap_bit = 0;
4454
4455 /* XXX make these configurable... XXX */
4456 rp->mark_freq = rp->pending / 4;
4457
4458 niu_set_max_burst(np, rp);
4459
4460 return 0;
4461 }
4462
4463 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4464 {
4465 u16 bss;
4466
4467 bss = min(PAGE_SHIFT, 15);
4468
4469 rp->rbr_block_size = 1 << bss;
4470 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4471
4472 rp->rbr_sizes[0] = 256;
4473 rp->rbr_sizes[1] = 1024;
4474 if (np->dev->mtu > ETH_DATA_LEN) {
4475 switch (PAGE_SIZE) {
4476 case 4 * 1024:
4477 rp->rbr_sizes[2] = 4096;
4478 break;
4479
4480 default:
4481 rp->rbr_sizes[2] = 8192;
4482 break;
4483 }
4484 } else {
4485 rp->rbr_sizes[2] = 2048;
4486 }
4487 rp->rbr_sizes[3] = rp->rbr_block_size;
4488 }
4489
4490 static int niu_alloc_channels(struct niu *np)
4491 {
4492 struct niu_parent *parent = np->parent;
4493 int first_rx_channel, first_tx_channel;
4494 int i, port, err;
4495
4496 port = np->port;
4497 first_rx_channel = first_tx_channel = 0;
4498 for (i = 0; i < port; i++) {
4499 first_rx_channel += parent->rxchan_per_port[i];
4500 first_tx_channel += parent->txchan_per_port[i];
4501 }
4502
4503 np->num_rx_rings = parent->rxchan_per_port[port];
4504 np->num_tx_rings = parent->txchan_per_port[port];
4505
4506 np->dev->real_num_tx_queues = np->num_tx_rings;
4507
4508 np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
4509 GFP_KERNEL);
4510 err = -ENOMEM;
4511 if (!np->rx_rings)
4512 goto out_err;
4513
4514 for (i = 0; i < np->num_rx_rings; i++) {
4515 struct rx_ring_info *rp = &np->rx_rings[i];
4516
4517 rp->np = np;
4518 rp->rx_channel = first_rx_channel + i;
4519
4520 err = niu_alloc_rx_ring_info(np, rp);
4521 if (err)
4522 goto out_err;
4523
4524 niu_size_rbr(np, rp);
4525
4526 /* XXX better defaults, configurable, etc... XXX */
4527 rp->nonsyn_window = 64;
4528 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4529 rp->syn_window = 64;
4530 rp->syn_threshold = rp->rcr_table_size - 64;
4531 rp->rcr_pkt_threshold = 16;
4532 rp->rcr_timeout = 8;
4533 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4534 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4535 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4536
4537 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4538 if (err)
4539 return err;
4540 }
4541
4542 np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
4543 GFP_KERNEL);
4544 err = -ENOMEM;
4545 if (!np->tx_rings)
4546 goto out_err;
4547
4548 for (i = 0; i < np->num_tx_rings; i++) {
4549 struct tx_ring_info *rp = &np->tx_rings[i];
4550
4551 rp->np = np;
4552 rp->tx_channel = first_tx_channel + i;
4553
4554 err = niu_alloc_tx_ring_info(np, rp);
4555 if (err)
4556 goto out_err;
4557 }
4558
4559 return 0;
4560
4561 out_err:
4562 niu_free_channels(np);
4563 return err;
4564 }
4565
4566 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4567 {
4568 int limit = 1000;
4569
4570 while (--limit > 0) {
4571 u64 val = nr64(TX_CS(channel));
4572 if (val & TX_CS_SNG_STATE)
4573 return 0;
4574 }
4575 return -ENODEV;
4576 }
4577
4578 static int niu_tx_channel_stop(struct niu *np, int channel)
4579 {
4580 u64 val = nr64(TX_CS(channel));
4581
4582 val |= TX_CS_STOP_N_GO;
4583 nw64(TX_CS(channel), val);
4584
4585 return niu_tx_cs_sng_poll(np, channel);
4586 }
4587
4588 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4589 {
4590 int limit = 1000;
4591
4592 while (--limit > 0) {
4593 u64 val = nr64(TX_CS(channel));
4594 if (!(val & TX_CS_RST))
4595 return 0;
4596 }
4597 return -ENODEV;
4598 }
4599
4600 static int niu_tx_channel_reset(struct niu *np, int channel)
4601 {
4602 u64 val = nr64(TX_CS(channel));
4603 int err;
4604
4605 val |= TX_CS_RST;
4606 nw64(TX_CS(channel), val);
4607
4608 err = niu_tx_cs_reset_poll(np, channel);
4609 if (!err)
4610 nw64(TX_RING_KICK(channel), 0);
4611
4612 return err;
4613 }
4614
4615 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4616 {
4617 u64 val;
4618
4619 nw64(TX_LOG_MASK1(channel), 0);
4620 nw64(TX_LOG_VAL1(channel), 0);
4621 nw64(TX_LOG_MASK2(channel), 0);
4622 nw64(TX_LOG_VAL2(channel), 0);
4623 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4624 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4625 nw64(TX_LOG_PAGE_HDL(channel), 0);
4626
4627 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4628 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4629 nw64(TX_LOG_PAGE_VLD(channel), val);
4630
4631 /* XXX TXDMA 32bit mode? XXX */
4632
4633 return 0;
4634 }
4635
4636 static void niu_txc_enable_port(struct niu *np, int on)
4637 {
4638 unsigned long flags;
4639 u64 val, mask;
4640
4641 niu_lock_parent(np, flags);
4642 val = nr64(TXC_CONTROL);
4643 mask = (u64)1 << np->port;
4644 if (on) {
4645 val |= TXC_CONTROL_ENABLE | mask;
4646 } else {
4647 val &= ~mask;
4648 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4649 val &= ~TXC_CONTROL_ENABLE;
4650 }
4651 nw64(TXC_CONTROL, val);
4652 niu_unlock_parent(np, flags);
4653 }
4654
4655 static void niu_txc_set_imask(struct niu *np, u64 imask)
4656 {
4657 unsigned long flags;
4658 u64 val;
4659
4660 niu_lock_parent(np, flags);
4661 val = nr64(TXC_INT_MASK);
4662 val &= ~TXC_INT_MASK_VAL(np->port);
4663 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4664 niu_unlock_parent(np, flags);
4665 }
4666
4667 static void niu_txc_port_dma_enable(struct niu *np, int on)
4668 {
4669 u64 val = 0;
4670
4671 if (on) {
4672 int i;
4673
4674 for (i = 0; i < np->num_tx_rings; i++)
4675 val |= (1 << np->tx_rings[i].tx_channel);
4676 }
4677 nw64(TXC_PORT_DMA(np->port), val);
4678 }
4679
4680 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4681 {
4682 int err, channel = rp->tx_channel;
4683 u64 val, ring_len;
4684
4685 err = niu_tx_channel_stop(np, channel);
4686 if (err)
4687 return err;
4688
4689 err = niu_tx_channel_reset(np, channel);
4690 if (err)
4691 return err;
4692
4693 err = niu_tx_channel_lpage_init(np, channel);
4694 if (err)
4695 return err;
4696
4697 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4698 nw64(TX_ENT_MSK(channel), 0);
4699
4700 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4701 TX_RNG_CFIG_STADDR)) {
4702 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4703 channel, (unsigned long long)rp->descr_dma);
4704 return -EINVAL;
4705 }
4706
4707 /* The length field in TX_RNG_CFIG is measured in 64-byte
4708 * blocks. rp->pending is the number of TX descriptors in
4709 * our ring, 8 bytes each, thus we divide by 8 bytes more
4710 * to get the proper value the chip wants.
4711 */
4712 ring_len = (rp->pending / 8);
4713
4714 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4715 rp->descr_dma);
4716 nw64(TX_RNG_CFIG(channel), val);
4717
4718 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4719 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4720 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4721 channel, (unsigned long long)rp->mbox_dma);
4722 return -EINVAL;
4723 }
4724 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4725 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4726
4727 nw64(TX_CS(channel), 0);
4728
4729 rp->last_pkt_cnt = 0;
4730
4731 return 0;
4732 }
4733
4734 static void niu_init_rdc_groups(struct niu *np)
4735 {
4736 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4737 int i, first_table_num = tp->first_table_num;
4738
4739 for (i = 0; i < tp->num_tables; i++) {
4740 struct rdc_table *tbl = &tp->tables[i];
4741 int this_table = first_table_num + i;
4742 int slot;
4743
4744 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4745 nw64(RDC_TBL(this_table, slot),
4746 tbl->rxdma_channel[slot]);
4747 }
4748
4749 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4750 }
4751
4752 static void niu_init_drr_weight(struct niu *np)
4753 {
4754 int type = phy_decode(np->parent->port_phy, np->port);
4755 u64 val;
4756
4757 switch (type) {
4758 case PORT_TYPE_10G:
4759 val = PT_DRR_WEIGHT_DEFAULT_10G;
4760 break;
4761
4762 case PORT_TYPE_1G:
4763 default:
4764 val = PT_DRR_WEIGHT_DEFAULT_1G;
4765 break;
4766 }
4767 nw64(PT_DRR_WT(np->port), val);
4768 }
4769
4770 static int niu_init_hostinfo(struct niu *np)
4771 {
4772 struct niu_parent *parent = np->parent;
4773 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4774 int i, err, num_alt = niu_num_alt_addr(np);
4775 int first_rdc_table = tp->first_table_num;
4776
4777 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4778 if (err)
4779 return err;
4780
4781 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4782 if (err)
4783 return err;
4784
4785 for (i = 0; i < num_alt; i++) {
4786 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4787 if (err)
4788 return err;
4789 }
4790
4791 return 0;
4792 }
4793
4794 static int niu_rx_channel_reset(struct niu *np, int channel)
4795 {
4796 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4797 RXDMA_CFIG1_RST, 1000, 10,
4798 "RXDMA_CFIG1");
4799 }
4800
4801 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4802 {
4803 u64 val;
4804
4805 nw64(RX_LOG_MASK1(channel), 0);
4806 nw64(RX_LOG_VAL1(channel), 0);
4807 nw64(RX_LOG_MASK2(channel), 0);
4808 nw64(RX_LOG_VAL2(channel), 0);
4809 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4810 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4811 nw64(RX_LOG_PAGE_HDL(channel), 0);
4812
4813 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4814 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4815 nw64(RX_LOG_PAGE_VLD(channel), val);
4816
4817 return 0;
4818 }
4819
4820 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4821 {
4822 u64 val;
4823
4824 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4825 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4826 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4827 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4828 nw64(RDC_RED_PARA(rp->rx_channel), val);
4829 }
4830
4831 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4832 {
4833 u64 val = 0;
4834
4835 *ret = 0;
4836 switch (rp->rbr_block_size) {
4837 case 4 * 1024:
4838 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4839 break;
4840 case 8 * 1024:
4841 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4842 break;
4843 case 16 * 1024:
4844 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4845 break;
4846 case 32 * 1024:
4847 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4848 break;
4849 default:
4850 return -EINVAL;
4851 }
4852 val |= RBR_CFIG_B_VLD2;
4853 switch (rp->rbr_sizes[2]) {
4854 case 2 * 1024:
4855 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4856 break;
4857 case 4 * 1024:
4858 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4859 break;
4860 case 8 * 1024:
4861 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4862 break;
4863 case 16 * 1024:
4864 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4865 break;
4866
4867 default:
4868 return -EINVAL;
4869 }
4870 val |= RBR_CFIG_B_VLD1;
4871 switch (rp->rbr_sizes[1]) {
4872 case 1 * 1024:
4873 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4874 break;
4875 case 2 * 1024:
4876 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4877 break;
4878 case 4 * 1024:
4879 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4880 break;
4881 case 8 * 1024:
4882 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4883 break;
4884
4885 default:
4886 return -EINVAL;
4887 }
4888 val |= RBR_CFIG_B_VLD0;
4889 switch (rp->rbr_sizes[0]) {
4890 case 256:
4891 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4892 break;
4893 case 512:
4894 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4895 break;
4896 case 1 * 1024:
4897 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4898 break;
4899 case 2 * 1024:
4900 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4901 break;
4902
4903 default:
4904 return -EINVAL;
4905 }
4906
4907 *ret = val;
4908 return 0;
4909 }
4910
4911 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4912 {
4913 u64 val = nr64(RXDMA_CFIG1(channel));
4914 int limit;
4915
4916 if (on)
4917 val |= RXDMA_CFIG1_EN;
4918 else
4919 val &= ~RXDMA_CFIG1_EN;
4920 nw64(RXDMA_CFIG1(channel), val);
4921
4922 limit = 1000;
4923 while (--limit > 0) {
4924 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4925 break;
4926 udelay(10);
4927 }
4928 if (limit <= 0)
4929 return -ENODEV;
4930 return 0;
4931 }
4932
4933 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4934 {
4935 int err, channel = rp->rx_channel;
4936 u64 val;
4937
4938 err = niu_rx_channel_reset(np, channel);
4939 if (err)
4940 return err;
4941
4942 err = niu_rx_channel_lpage_init(np, channel);
4943 if (err)
4944 return err;
4945
4946 niu_rx_channel_wred_init(np, rp);
4947
4948 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4949 nw64(RX_DMA_CTL_STAT(channel),
4950 (RX_DMA_CTL_STAT_MEX |
4951 RX_DMA_CTL_STAT_RCRTHRES |
4952 RX_DMA_CTL_STAT_RCRTO |
4953 RX_DMA_CTL_STAT_RBR_EMPTY));
4954 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4955 nw64(RXDMA_CFIG2(channel),
4956 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4957 RXDMA_CFIG2_FULL_HDR));
4958 nw64(RBR_CFIG_A(channel),
4959 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4960 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4961 err = niu_compute_rbr_cfig_b(rp, &val);
4962 if (err)
4963 return err;
4964 nw64(RBR_CFIG_B(channel), val);
4965 nw64(RCRCFIG_A(channel),
4966 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4967 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4968 nw64(RCRCFIG_B(channel),
4969 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4970 RCRCFIG_B_ENTOUT |
4971 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4972
4973 err = niu_enable_rx_channel(np, channel, 1);
4974 if (err)
4975 return err;
4976
4977 nw64(RBR_KICK(channel), rp->rbr_index);
4978
4979 val = nr64(RX_DMA_CTL_STAT(channel));
4980 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4981 nw64(RX_DMA_CTL_STAT(channel), val);
4982
4983 return 0;
4984 }
4985
4986 static int niu_init_rx_channels(struct niu *np)
4987 {
4988 unsigned long flags;
4989 u64 seed = jiffies_64;
4990 int err, i;
4991
4992 niu_lock_parent(np, flags);
4993 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4994 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4995 niu_unlock_parent(np, flags);
4996
4997 /* XXX RXDMA 32bit mode? XXX */
4998
4999 niu_init_rdc_groups(np);
5000 niu_init_drr_weight(np);
5001
5002 err = niu_init_hostinfo(np);
5003 if (err)
5004 return err;
5005
5006 for (i = 0; i < np->num_rx_rings; i++) {
5007 struct rx_ring_info *rp = &np->rx_rings[i];
5008
5009 err = niu_init_one_rx_channel(np, rp);
5010 if (err)
5011 return err;
5012 }
5013
5014 return 0;
5015 }
5016
5017 static int niu_set_ip_frag_rule(struct niu *np)
5018 {
5019 struct niu_parent *parent = np->parent;
5020 struct niu_classifier *cp = &np->clas;
5021 struct niu_tcam_entry *tp;
5022 int index, err;
5023
5024 index = cp->tcam_top;
5025 tp = &parent->tcam[index];
5026
5027 /* Note that the noport bit is the same in both ipv4 and
5028 * ipv6 format TCAM entries.
5029 */
5030 memset(tp, 0, sizeof(*tp));
5031 tp->key[1] = TCAM_V4KEY1_NOPORT;
5032 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5033 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5034 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5035 err = tcam_write(np, index, tp->key, tp->key_mask);
5036 if (err)
5037 return err;
5038 err = tcam_assoc_write(np, index, tp->assoc_data);
5039 if (err)
5040 return err;
5041 tp->valid = 1;
5042 cp->tcam_valid_entries++;
5043
5044 return 0;
5045 }
5046
5047 static int niu_init_classifier_hw(struct niu *np)
5048 {
5049 struct niu_parent *parent = np->parent;
5050 struct niu_classifier *cp = &np->clas;
5051 int i, err;
5052
5053 nw64(H1POLY, cp->h1_init);
5054 nw64(H2POLY, cp->h2_init);
5055
5056 err = niu_init_hostinfo(np);
5057 if (err)
5058 return err;
5059
5060 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5061 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5062
5063 vlan_tbl_write(np, i, np->port,
5064 vp->vlan_pref, vp->rdc_num);
5065 }
5066
5067 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5068 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5069
5070 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5071 ap->rdc_num, ap->mac_pref);
5072 if (err)
5073 return err;
5074 }
5075
5076 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5077 int index = i - CLASS_CODE_USER_PROG1;
5078
5079 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5080 if (err)
5081 return err;
5082 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5083 if (err)
5084 return err;
5085 }
5086
5087 err = niu_set_ip_frag_rule(np);
5088 if (err)
5089 return err;
5090
5091 tcam_enable(np, 1);
5092
5093 return 0;
5094 }
5095
5096 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5097 {
5098 nw64(ZCP_RAM_DATA0, data[0]);
5099 nw64(ZCP_RAM_DATA1, data[1]);
5100 nw64(ZCP_RAM_DATA2, data[2]);
5101 nw64(ZCP_RAM_DATA3, data[3]);
5102 nw64(ZCP_RAM_DATA4, data[4]);
5103 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5104 nw64(ZCP_RAM_ACC,
5105 (ZCP_RAM_ACC_WRITE |
5106 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5107 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5108
5109 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5110 1000, 100);
5111 }
5112
5113 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5114 {
5115 int err;
5116
5117 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5118 1000, 100);
5119 if (err) {
5120 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5121 (unsigned long long)nr64(ZCP_RAM_ACC));
5122 return err;
5123 }
5124
5125 nw64(ZCP_RAM_ACC,
5126 (ZCP_RAM_ACC_READ |
5127 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5128 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5129
5130 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5131 1000, 100);
5132 if (err) {
5133 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5134 (unsigned long long)nr64(ZCP_RAM_ACC));
5135 return err;
5136 }
5137
5138 data[0] = nr64(ZCP_RAM_DATA0);
5139 data[1] = nr64(ZCP_RAM_DATA1);
5140 data[2] = nr64(ZCP_RAM_DATA2);
5141 data[3] = nr64(ZCP_RAM_DATA3);
5142 data[4] = nr64(ZCP_RAM_DATA4);
5143
5144 return 0;
5145 }
5146
5147 static void niu_zcp_cfifo_reset(struct niu *np)
5148 {
5149 u64 val = nr64(RESET_CFIFO);
5150
5151 val |= RESET_CFIFO_RST(np->port);
5152 nw64(RESET_CFIFO, val);
5153 udelay(10);
5154
5155 val &= ~RESET_CFIFO_RST(np->port);
5156 nw64(RESET_CFIFO, val);
5157 }
5158
5159 static int niu_init_zcp(struct niu *np)
5160 {
5161 u64 data[5], rbuf[5];
5162 int i, max, err;
5163
5164 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5165 if (np->port == 0 || np->port == 1)
5166 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5167 else
5168 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5169 } else
5170 max = NIU_CFIFO_ENTRIES;
5171
5172 data[0] = 0;
5173 data[1] = 0;
5174 data[2] = 0;
5175 data[3] = 0;
5176 data[4] = 0;
5177
5178 for (i = 0; i < max; i++) {
5179 err = niu_zcp_write(np, i, data);
5180 if (err)
5181 return err;
5182 err = niu_zcp_read(np, i, rbuf);
5183 if (err)
5184 return err;
5185 }
5186
5187 niu_zcp_cfifo_reset(np);
5188 nw64(CFIFO_ECC(np->port), 0);
5189 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5190 (void) nr64(ZCP_INT_STAT);
5191 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5192
5193 return 0;
5194 }
5195
5196 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5197 {
5198 u64 val = nr64_ipp(IPP_CFIG);
5199
5200 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5201 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5202 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5203 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5204 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5205 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5206 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5207 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5208 }
5209
5210 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5211 {
5212 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5213 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5214 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5215 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5216 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5217 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5218 }
5219
5220 static int niu_ipp_reset(struct niu *np)
5221 {
5222 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5223 1000, 100, "IPP_CFIG");
5224 }
5225
5226 static int niu_init_ipp(struct niu *np)
5227 {
5228 u64 data[5], rbuf[5], val;
5229 int i, max, err;
5230
5231 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5232 if (np->port == 0 || np->port == 1)
5233 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5234 else
5235 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5236 } else
5237 max = NIU_DFIFO_ENTRIES;
5238
5239 data[0] = 0;
5240 data[1] = 0;
5241 data[2] = 0;
5242 data[3] = 0;
5243 data[4] = 0;
5244
5245 for (i = 0; i < max; i++) {
5246 niu_ipp_write(np, i, data);
5247 niu_ipp_read(np, i, rbuf);
5248 }
5249
5250 (void) nr64_ipp(IPP_INT_STAT);
5251 (void) nr64_ipp(IPP_INT_STAT);
5252
5253 err = niu_ipp_reset(np);
5254 if (err)
5255 return err;
5256
5257 (void) nr64_ipp(IPP_PKT_DIS);
5258 (void) nr64_ipp(IPP_BAD_CS_CNT);
5259 (void) nr64_ipp(IPP_ECC);
5260
5261 (void) nr64_ipp(IPP_INT_STAT);
5262
5263 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5264
5265 val = nr64_ipp(IPP_CFIG);
5266 val &= ~IPP_CFIG_IP_MAX_PKT;
5267 val |= (IPP_CFIG_IPP_ENABLE |
5268 IPP_CFIG_DFIFO_ECC_EN |
5269 IPP_CFIG_DROP_BAD_CRC |
5270 IPP_CFIG_CKSUM_EN |
5271 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5272 nw64_ipp(IPP_CFIG, val);
5273
5274 return 0;
5275 }
5276
5277 static void niu_handle_led(struct niu *np, int status)
5278 {
5279 u64 val;
5280 val = nr64_mac(XMAC_CONFIG);
5281
5282 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5283 (np->flags & NIU_FLAGS_FIBER) != 0) {
5284 if (status) {
5285 val |= XMAC_CONFIG_LED_POLARITY;
5286 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5287 } else {
5288 val |= XMAC_CONFIG_FORCE_LED_ON;
5289 val &= ~XMAC_CONFIG_LED_POLARITY;
5290 }
5291 }
5292
5293 nw64_mac(XMAC_CONFIG, val);
5294 }
5295
5296 static void niu_init_xif_xmac(struct niu *np)
5297 {
5298 struct niu_link_config *lp = &np->link_config;
5299 u64 val;
5300
5301 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5302 val = nr64(MIF_CONFIG);
5303 val |= MIF_CONFIG_ATCA_GE;
5304 nw64(MIF_CONFIG, val);
5305 }
5306
5307 val = nr64_mac(XMAC_CONFIG);
5308 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5309
5310 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5311
5312 if (lp->loopback_mode == LOOPBACK_MAC) {
5313 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5314 val |= XMAC_CONFIG_LOOPBACK;
5315 } else {
5316 val &= ~XMAC_CONFIG_LOOPBACK;
5317 }
5318
5319 if (np->flags & NIU_FLAGS_10G) {
5320 val &= ~XMAC_CONFIG_LFS_DISABLE;
5321 } else {
5322 val |= XMAC_CONFIG_LFS_DISABLE;
5323 if (!(np->flags & NIU_FLAGS_FIBER) &&
5324 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5325 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5326 else
5327 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5328 }
5329
5330 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5331
5332 if (lp->active_speed == SPEED_100)
5333 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5334 else
5335 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5336
5337 nw64_mac(XMAC_CONFIG, val);
5338
5339 val = nr64_mac(XMAC_CONFIG);
5340 val &= ~XMAC_CONFIG_MODE_MASK;
5341 if (np->flags & NIU_FLAGS_10G) {
5342 val |= XMAC_CONFIG_MODE_XGMII;
5343 } else {
5344 if (lp->active_speed == SPEED_1000)
5345 val |= XMAC_CONFIG_MODE_GMII;
5346 else
5347 val |= XMAC_CONFIG_MODE_MII;
5348 }
5349
5350 nw64_mac(XMAC_CONFIG, val);
5351 }
5352
5353 static void niu_init_xif_bmac(struct niu *np)
5354 {
5355 struct niu_link_config *lp = &np->link_config;
5356 u64 val;
5357
5358 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5359
5360 if (lp->loopback_mode == LOOPBACK_MAC)
5361 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5362 else
5363 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5364
5365 if (lp->active_speed == SPEED_1000)
5366 val |= BMAC_XIF_CONFIG_GMII_MODE;
5367 else
5368 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5369
5370 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5371 BMAC_XIF_CONFIG_LED_POLARITY);
5372
5373 if (!(np->flags & NIU_FLAGS_10G) &&
5374 !(np->flags & NIU_FLAGS_FIBER) &&
5375 lp->active_speed == SPEED_100)
5376 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5377 else
5378 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5379
5380 nw64_mac(BMAC_XIF_CONFIG, val);
5381 }
5382
5383 static void niu_init_xif(struct niu *np)
5384 {
5385 if (np->flags & NIU_FLAGS_XMAC)
5386 niu_init_xif_xmac(np);
5387 else
5388 niu_init_xif_bmac(np);
5389 }
5390
5391 static void niu_pcs_mii_reset(struct niu *np)
5392 {
5393 int limit = 1000;
5394 u64 val = nr64_pcs(PCS_MII_CTL);
5395 val |= PCS_MII_CTL_RST;
5396 nw64_pcs(PCS_MII_CTL, val);
5397 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5398 udelay(100);
5399 val = nr64_pcs(PCS_MII_CTL);
5400 }
5401 }
5402
5403 static void niu_xpcs_reset(struct niu *np)
5404 {
5405 int limit = 1000;
5406 u64 val = nr64_xpcs(XPCS_CONTROL1);
5407 val |= XPCS_CONTROL1_RESET;
5408 nw64_xpcs(XPCS_CONTROL1, val);
5409 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5410 udelay(100);
5411 val = nr64_xpcs(XPCS_CONTROL1);
5412 }
5413 }
5414
5415 static int niu_init_pcs(struct niu *np)
5416 {
5417 struct niu_link_config *lp = &np->link_config;
5418 u64 val;
5419
5420 switch (np->flags & (NIU_FLAGS_10G |
5421 NIU_FLAGS_FIBER |
5422 NIU_FLAGS_XCVR_SERDES)) {
5423 case NIU_FLAGS_FIBER:
5424 /* 1G fiber */
5425 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5426 nw64_pcs(PCS_DPATH_MODE, 0);
5427 niu_pcs_mii_reset(np);
5428 break;
5429
5430 case NIU_FLAGS_10G:
5431 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5432 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5433 /* 10G SERDES */
5434 if (!(np->flags & NIU_FLAGS_XMAC))
5435 return -EINVAL;
5436
5437 /* 10G copper or fiber */
5438 val = nr64_mac(XMAC_CONFIG);
5439 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5440 nw64_mac(XMAC_CONFIG, val);
5441
5442 niu_xpcs_reset(np);
5443
5444 val = nr64_xpcs(XPCS_CONTROL1);
5445 if (lp->loopback_mode == LOOPBACK_PHY)
5446 val |= XPCS_CONTROL1_LOOPBACK;
5447 else
5448 val &= ~XPCS_CONTROL1_LOOPBACK;
5449 nw64_xpcs(XPCS_CONTROL1, val);
5450
5451 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5452 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5453 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5454 break;
5455
5456
5457 case NIU_FLAGS_XCVR_SERDES:
5458 /* 1G SERDES */
5459 niu_pcs_mii_reset(np);
5460 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5461 nw64_pcs(PCS_DPATH_MODE, 0);
5462 break;
5463
5464 case 0:
5465 /* 1G copper */
5466 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5467 /* 1G RGMII FIBER */
5468 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5469 niu_pcs_mii_reset(np);
5470 break;
5471
5472 default:
5473 return -EINVAL;
5474 }
5475
5476 return 0;
5477 }
5478
5479 static int niu_reset_tx_xmac(struct niu *np)
5480 {
5481 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5482 (XTXMAC_SW_RST_REG_RS |
5483 XTXMAC_SW_RST_SOFT_RST),
5484 1000, 100, "XTXMAC_SW_RST");
5485 }
5486
5487 static int niu_reset_tx_bmac(struct niu *np)
5488 {
5489 int limit;
5490
5491 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5492 limit = 1000;
5493 while (--limit >= 0) {
5494 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5495 break;
5496 udelay(100);
5497 }
5498 if (limit < 0) {
5499 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5500 np->port,
5501 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5502 return -ENODEV;
5503 }
5504
5505 return 0;
5506 }
5507
5508 static int niu_reset_tx_mac(struct niu *np)
5509 {
5510 if (np->flags & NIU_FLAGS_XMAC)
5511 return niu_reset_tx_xmac(np);
5512 else
5513 return niu_reset_tx_bmac(np);
5514 }
5515
5516 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5517 {
5518 u64 val;
5519
5520 val = nr64_mac(XMAC_MIN);
5521 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5522 XMAC_MIN_RX_MIN_PKT_SIZE);
5523 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5524 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5525 nw64_mac(XMAC_MIN, val);
5526
5527 nw64_mac(XMAC_MAX, max);
5528
5529 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5530
5531 val = nr64_mac(XMAC_IPG);
5532 if (np->flags & NIU_FLAGS_10G) {
5533 val &= ~XMAC_IPG_IPG_XGMII;
5534 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5535 } else {
5536 val &= ~XMAC_IPG_IPG_MII_GMII;
5537 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5538 }
5539 nw64_mac(XMAC_IPG, val);
5540
5541 val = nr64_mac(XMAC_CONFIG);
5542 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5543 XMAC_CONFIG_STRETCH_MODE |
5544 XMAC_CONFIG_VAR_MIN_IPG_EN |
5545 XMAC_CONFIG_TX_ENABLE);
5546 nw64_mac(XMAC_CONFIG, val);
5547
5548 nw64_mac(TXMAC_FRM_CNT, 0);
5549 nw64_mac(TXMAC_BYTE_CNT, 0);
5550 }
5551
5552 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5553 {
5554 u64 val;
5555
5556 nw64_mac(BMAC_MIN_FRAME, min);
5557 nw64_mac(BMAC_MAX_FRAME, max);
5558
5559 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5560 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5561 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5562
5563 val = nr64_mac(BTXMAC_CONFIG);
5564 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5565 BTXMAC_CONFIG_ENABLE);
5566 nw64_mac(BTXMAC_CONFIG, val);
5567 }
5568
5569 static void niu_init_tx_mac(struct niu *np)
5570 {
5571 u64 min, max;
5572
5573 min = 64;
5574 if (np->dev->mtu > ETH_DATA_LEN)
5575 max = 9216;
5576 else
5577 max = 1522;
5578
5579 /* The XMAC_MIN register only accepts values for TX min which
5580 * have the low 3 bits cleared.
5581 */
5582 BUG_ON(min & 0x7);
5583
5584 if (np->flags & NIU_FLAGS_XMAC)
5585 niu_init_tx_xmac(np, min, max);
5586 else
5587 niu_init_tx_bmac(np, min, max);
5588 }
5589
5590 static int niu_reset_rx_xmac(struct niu *np)
5591 {
5592 int limit;
5593
5594 nw64_mac(XRXMAC_SW_RST,
5595 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5596 limit = 1000;
5597 while (--limit >= 0) {
5598 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5599 XRXMAC_SW_RST_SOFT_RST)))
5600 break;
5601 udelay(100);
5602 }
5603 if (limit < 0) {
5604 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5605 np->port,
5606 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5607 return -ENODEV;
5608 }
5609
5610 return 0;
5611 }
5612
5613 static int niu_reset_rx_bmac(struct niu *np)
5614 {
5615 int limit;
5616
5617 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5618 limit = 1000;
5619 while (--limit >= 0) {
5620 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5621 break;
5622 udelay(100);
5623 }
5624 if (limit < 0) {
5625 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5626 np->port,
5627 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5628 return -ENODEV;
5629 }
5630
5631 return 0;
5632 }
5633
5634 static int niu_reset_rx_mac(struct niu *np)
5635 {
5636 if (np->flags & NIU_FLAGS_XMAC)
5637 return niu_reset_rx_xmac(np);
5638 else
5639 return niu_reset_rx_bmac(np);
5640 }
5641
5642 static void niu_init_rx_xmac(struct niu *np)
5643 {
5644 struct niu_parent *parent = np->parent;
5645 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5646 int first_rdc_table = tp->first_table_num;
5647 unsigned long i;
5648 u64 val;
5649
5650 nw64_mac(XMAC_ADD_FILT0, 0);
5651 nw64_mac(XMAC_ADD_FILT1, 0);
5652 nw64_mac(XMAC_ADD_FILT2, 0);
5653 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5654 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5655 for (i = 0; i < MAC_NUM_HASH; i++)
5656 nw64_mac(XMAC_HASH_TBL(i), 0);
5657 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5658 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5659 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5660
5661 val = nr64_mac(XMAC_CONFIG);
5662 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5663 XMAC_CONFIG_PROMISCUOUS |
5664 XMAC_CONFIG_PROMISC_GROUP |
5665 XMAC_CONFIG_ERR_CHK_DIS |
5666 XMAC_CONFIG_RX_CRC_CHK_DIS |
5667 XMAC_CONFIG_RESERVED_MULTICAST |
5668 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5669 XMAC_CONFIG_ADDR_FILTER_EN |
5670 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5671 XMAC_CONFIG_STRIP_CRC |
5672 XMAC_CONFIG_PASS_FLOW_CTRL |
5673 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5674 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5675 nw64_mac(XMAC_CONFIG, val);
5676
5677 nw64_mac(RXMAC_BT_CNT, 0);
5678 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5679 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5680 nw64_mac(RXMAC_FRAG_CNT, 0);
5681 nw64_mac(RXMAC_HIST_CNT1, 0);
5682 nw64_mac(RXMAC_HIST_CNT2, 0);
5683 nw64_mac(RXMAC_HIST_CNT3, 0);
5684 nw64_mac(RXMAC_HIST_CNT4, 0);
5685 nw64_mac(RXMAC_HIST_CNT5, 0);
5686 nw64_mac(RXMAC_HIST_CNT6, 0);
5687 nw64_mac(RXMAC_HIST_CNT7, 0);
5688 nw64_mac(RXMAC_MPSZER_CNT, 0);
5689 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5690 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5691 nw64_mac(LINK_FAULT_CNT, 0);
5692 }
5693
5694 static void niu_init_rx_bmac(struct niu *np)
5695 {
5696 struct niu_parent *parent = np->parent;
5697 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5698 int first_rdc_table = tp->first_table_num;
5699 unsigned long i;
5700 u64 val;
5701
5702 nw64_mac(BMAC_ADD_FILT0, 0);
5703 nw64_mac(BMAC_ADD_FILT1, 0);
5704 nw64_mac(BMAC_ADD_FILT2, 0);
5705 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5706 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5707 for (i = 0; i < MAC_NUM_HASH; i++)
5708 nw64_mac(BMAC_HASH_TBL(i), 0);
5709 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5710 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5711 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5712
5713 val = nr64_mac(BRXMAC_CONFIG);
5714 val &= ~(BRXMAC_CONFIG_ENABLE |
5715 BRXMAC_CONFIG_STRIP_PAD |
5716 BRXMAC_CONFIG_STRIP_FCS |
5717 BRXMAC_CONFIG_PROMISC |
5718 BRXMAC_CONFIG_PROMISC_GRP |
5719 BRXMAC_CONFIG_ADDR_FILT_EN |
5720 BRXMAC_CONFIG_DISCARD_DIS);
5721 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5722 nw64_mac(BRXMAC_CONFIG, val);
5723
5724 val = nr64_mac(BMAC_ADDR_CMPEN);
5725 val |= BMAC_ADDR_CMPEN_EN0;
5726 nw64_mac(BMAC_ADDR_CMPEN, val);
5727 }
5728
5729 static void niu_init_rx_mac(struct niu *np)
5730 {
5731 niu_set_primary_mac(np, np->dev->dev_addr);
5732
5733 if (np->flags & NIU_FLAGS_XMAC)
5734 niu_init_rx_xmac(np);
5735 else
5736 niu_init_rx_bmac(np);
5737 }
5738
5739 static void niu_enable_tx_xmac(struct niu *np, int on)
5740 {
5741 u64 val = nr64_mac(XMAC_CONFIG);
5742
5743 if (on)
5744 val |= XMAC_CONFIG_TX_ENABLE;
5745 else
5746 val &= ~XMAC_CONFIG_TX_ENABLE;
5747 nw64_mac(XMAC_CONFIG, val);
5748 }
5749
5750 static void niu_enable_tx_bmac(struct niu *np, int on)
5751 {
5752 u64 val = nr64_mac(BTXMAC_CONFIG);
5753
5754 if (on)
5755 val |= BTXMAC_CONFIG_ENABLE;
5756 else
5757 val &= ~BTXMAC_CONFIG_ENABLE;
5758 nw64_mac(BTXMAC_CONFIG, val);
5759 }
5760
5761 static void niu_enable_tx_mac(struct niu *np, int on)
5762 {
5763 if (np->flags & NIU_FLAGS_XMAC)
5764 niu_enable_tx_xmac(np, on);
5765 else
5766 niu_enable_tx_bmac(np, on);
5767 }
5768
5769 static void niu_enable_rx_xmac(struct niu *np, int on)
5770 {
5771 u64 val = nr64_mac(XMAC_CONFIG);
5772
5773 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5774 XMAC_CONFIG_PROMISCUOUS);
5775
5776 if (np->flags & NIU_FLAGS_MCAST)
5777 val |= XMAC_CONFIG_HASH_FILTER_EN;
5778 if (np->flags & NIU_FLAGS_PROMISC)
5779 val |= XMAC_CONFIG_PROMISCUOUS;
5780
5781 if (on)
5782 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5783 else
5784 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5785 nw64_mac(XMAC_CONFIG, val);
5786 }
5787
5788 static void niu_enable_rx_bmac(struct niu *np, int on)
5789 {
5790 u64 val = nr64_mac(BRXMAC_CONFIG);
5791
5792 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5793 BRXMAC_CONFIG_PROMISC);
5794
5795 if (np->flags & NIU_FLAGS_MCAST)
5796 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5797 if (np->flags & NIU_FLAGS_PROMISC)
5798 val |= BRXMAC_CONFIG_PROMISC;
5799
5800 if (on)
5801 val |= BRXMAC_CONFIG_ENABLE;
5802 else
5803 val &= ~BRXMAC_CONFIG_ENABLE;
5804 nw64_mac(BRXMAC_CONFIG, val);
5805 }
5806
5807 static void niu_enable_rx_mac(struct niu *np, int on)
5808 {
5809 if (np->flags & NIU_FLAGS_XMAC)
5810 niu_enable_rx_xmac(np, on);
5811 else
5812 niu_enable_rx_bmac(np, on);
5813 }
5814
5815 static int niu_init_mac(struct niu *np)
5816 {
5817 int err;
5818
5819 niu_init_xif(np);
5820 err = niu_init_pcs(np);
5821 if (err)
5822 return err;
5823
5824 err = niu_reset_tx_mac(np);
5825 if (err)
5826 return err;
5827 niu_init_tx_mac(np);
5828 err = niu_reset_rx_mac(np);
5829 if (err)
5830 return err;
5831 niu_init_rx_mac(np);
5832
5833 /* This looks hookey but the RX MAC reset we just did will
5834 * undo some of the state we setup in niu_init_tx_mac() so we
5835 * have to call it again. In particular, the RX MAC reset will
5836 * set the XMAC_MAX register back to it's default value.
5837 */
5838 niu_init_tx_mac(np);
5839 niu_enable_tx_mac(np, 1);
5840
5841 niu_enable_rx_mac(np, 1);
5842
5843 return 0;
5844 }
5845
5846 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5847 {
5848 (void) niu_tx_channel_stop(np, rp->tx_channel);
5849 }
5850
5851 static void niu_stop_tx_channels(struct niu *np)
5852 {
5853 int i;
5854
5855 for (i = 0; i < np->num_tx_rings; i++) {
5856 struct tx_ring_info *rp = &np->tx_rings[i];
5857
5858 niu_stop_one_tx_channel(np, rp);
5859 }
5860 }
5861
5862 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5863 {
5864 (void) niu_tx_channel_reset(np, rp->tx_channel);
5865 }
5866
5867 static void niu_reset_tx_channels(struct niu *np)
5868 {
5869 int i;
5870
5871 for (i = 0; i < np->num_tx_rings; i++) {
5872 struct tx_ring_info *rp = &np->tx_rings[i];
5873
5874 niu_reset_one_tx_channel(np, rp);
5875 }
5876 }
5877
5878 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5879 {
5880 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5881 }
5882
5883 static void niu_stop_rx_channels(struct niu *np)
5884 {
5885 int i;
5886
5887 for (i = 0; i < np->num_rx_rings; i++) {
5888 struct rx_ring_info *rp = &np->rx_rings[i];
5889
5890 niu_stop_one_rx_channel(np, rp);
5891 }
5892 }
5893
5894 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5895 {
5896 int channel = rp->rx_channel;
5897
5898 (void) niu_rx_channel_reset(np, channel);
5899 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5900 nw64(RX_DMA_CTL_STAT(channel), 0);
5901 (void) niu_enable_rx_channel(np, channel, 0);
5902 }
5903
5904 static void niu_reset_rx_channels(struct niu *np)
5905 {
5906 int i;
5907
5908 for (i = 0; i < np->num_rx_rings; i++) {
5909 struct rx_ring_info *rp = &np->rx_rings[i];
5910
5911 niu_reset_one_rx_channel(np, rp);
5912 }
5913 }
5914
5915 static void niu_disable_ipp(struct niu *np)
5916 {
5917 u64 rd, wr, val;
5918 int limit;
5919
5920 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5921 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5922 limit = 100;
5923 while (--limit >= 0 && (rd != wr)) {
5924 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5925 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5926 }
5927 if (limit < 0 &&
5928 (rd != 0 && wr != 1)) {
5929 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5930 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5931 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5932 }
5933
5934 val = nr64_ipp(IPP_CFIG);
5935 val &= ~(IPP_CFIG_IPP_ENABLE |
5936 IPP_CFIG_DFIFO_ECC_EN |
5937 IPP_CFIG_DROP_BAD_CRC |
5938 IPP_CFIG_CKSUM_EN);
5939 nw64_ipp(IPP_CFIG, val);
5940
5941 (void) niu_ipp_reset(np);
5942 }
5943
5944 static int niu_init_hw(struct niu *np)
5945 {
5946 int i, err;
5947
5948 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5949 niu_txc_enable_port(np, 1);
5950 niu_txc_port_dma_enable(np, 1);
5951 niu_txc_set_imask(np, 0);
5952
5953 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5954 for (i = 0; i < np->num_tx_rings; i++) {
5955 struct tx_ring_info *rp = &np->tx_rings[i];
5956
5957 err = niu_init_one_tx_channel(np, rp);
5958 if (err)
5959 return err;
5960 }
5961
5962 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5963 err = niu_init_rx_channels(np);
5964 if (err)
5965 goto out_uninit_tx_channels;
5966
5967 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5968 err = niu_init_classifier_hw(np);
5969 if (err)
5970 goto out_uninit_rx_channels;
5971
5972 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5973 err = niu_init_zcp(np);
5974 if (err)
5975 goto out_uninit_rx_channels;
5976
5977 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5978 err = niu_init_ipp(np);
5979 if (err)
5980 goto out_uninit_rx_channels;
5981
5982 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5983 err = niu_init_mac(np);
5984 if (err)
5985 goto out_uninit_ipp;
5986
5987 return 0;
5988
5989 out_uninit_ipp:
5990 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5991 niu_disable_ipp(np);
5992
5993 out_uninit_rx_channels:
5994 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5995 niu_stop_rx_channels(np);
5996 niu_reset_rx_channels(np);
5997
5998 out_uninit_tx_channels:
5999 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
6000 niu_stop_tx_channels(np);
6001 niu_reset_tx_channels(np);
6002
6003 return err;
6004 }
6005
6006 static void niu_stop_hw(struct niu *np)
6007 {
6008 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6009 niu_enable_interrupts(np, 0);
6010
6011 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6012 niu_enable_rx_mac(np, 0);
6013
6014 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6015 niu_disable_ipp(np);
6016
6017 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6018 niu_stop_tx_channels(np);
6019
6020 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6021 niu_stop_rx_channels(np);
6022
6023 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6024 niu_reset_tx_channels(np);
6025
6026 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6027 niu_reset_rx_channels(np);
6028 }
6029
6030 static void niu_set_irq_name(struct niu *np)
6031 {
6032 int port = np->port;
6033 int i, j = 1;
6034
6035 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6036
6037 if (port == 0) {
6038 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6039 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6040 j = 3;
6041 }
6042
6043 for (i = 0; i < np->num_ldg - j; i++) {
6044 if (i < np->num_rx_rings)
6045 sprintf(np->irq_name[i+j], "%s-rx-%d",
6046 np->dev->name, i);
6047 else if (i < np->num_tx_rings + np->num_rx_rings)
6048 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6049 i - np->num_rx_rings);
6050 }
6051 }
6052
6053 static int niu_request_irq(struct niu *np)
6054 {
6055 int i, j, err;
6056
6057 niu_set_irq_name(np);
6058
6059 err = 0;
6060 for (i = 0; i < np->num_ldg; i++) {
6061 struct niu_ldg *lp = &np->ldg[i];
6062
6063 err = request_irq(lp->irq, niu_interrupt,
6064 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
6065 np->irq_name[i], lp);
6066 if (err)
6067 goto out_free_irqs;
6068
6069 }
6070
6071 return 0;
6072
6073 out_free_irqs:
6074 for (j = 0; j < i; j++) {
6075 struct niu_ldg *lp = &np->ldg[j];
6076
6077 free_irq(lp->irq, lp);
6078 }
6079 return err;
6080 }
6081
6082 static void niu_free_irq(struct niu *np)
6083 {
6084 int i;
6085
6086 for (i = 0; i < np->num_ldg; i++) {
6087 struct niu_ldg *lp = &np->ldg[i];
6088
6089 free_irq(lp->irq, lp);
6090 }
6091 }
6092
6093 static void niu_enable_napi(struct niu *np)
6094 {
6095 int i;
6096
6097 for (i = 0; i < np->num_ldg; i++)
6098 napi_enable(&np->ldg[i].napi);
6099 }
6100
6101 static void niu_disable_napi(struct niu *np)
6102 {
6103 int i;
6104
6105 for (i = 0; i < np->num_ldg; i++)
6106 napi_disable(&np->ldg[i].napi);
6107 }
6108
6109 static int niu_open(struct net_device *dev)
6110 {
6111 struct niu *np = netdev_priv(dev);
6112 int err;
6113
6114 netif_carrier_off(dev);
6115
6116 err = niu_alloc_channels(np);
6117 if (err)
6118 goto out_err;
6119
6120 err = niu_enable_interrupts(np, 0);
6121 if (err)
6122 goto out_free_channels;
6123
6124 err = niu_request_irq(np);
6125 if (err)
6126 goto out_free_channels;
6127
6128 niu_enable_napi(np);
6129
6130 spin_lock_irq(&np->lock);
6131
6132 err = niu_init_hw(np);
6133 if (!err) {
6134 init_timer(&np->timer);
6135 np->timer.expires = jiffies + HZ;
6136 np->timer.data = (unsigned long) np;
6137 np->timer.function = niu_timer;
6138
6139 err = niu_enable_interrupts(np, 1);
6140 if (err)
6141 niu_stop_hw(np);
6142 }
6143
6144 spin_unlock_irq(&np->lock);
6145
6146 if (err) {
6147 niu_disable_napi(np);
6148 goto out_free_irq;
6149 }
6150
6151 netif_tx_start_all_queues(dev);
6152
6153 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6154 netif_carrier_on(dev);
6155
6156 add_timer(&np->timer);
6157
6158 return 0;
6159
6160 out_free_irq:
6161 niu_free_irq(np);
6162
6163 out_free_channels:
6164 niu_free_channels(np);
6165
6166 out_err:
6167 return err;
6168 }
6169
6170 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6171 {
6172 cancel_work_sync(&np->reset_task);
6173
6174 niu_disable_napi(np);
6175 netif_tx_stop_all_queues(dev);
6176
6177 del_timer_sync(&np->timer);
6178
6179 spin_lock_irq(&np->lock);
6180
6181 niu_stop_hw(np);
6182
6183 spin_unlock_irq(&np->lock);
6184 }
6185
6186 static int niu_close(struct net_device *dev)
6187 {
6188 struct niu *np = netdev_priv(dev);
6189
6190 niu_full_shutdown(np, dev);
6191
6192 niu_free_irq(np);
6193
6194 niu_free_channels(np);
6195
6196 niu_handle_led(np, 0);
6197
6198 return 0;
6199 }
6200
6201 static void niu_sync_xmac_stats(struct niu *np)
6202 {
6203 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6204
6205 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6206 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6207
6208 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6209 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6210 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6211 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6212 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6213 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6214 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6215 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6216 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6217 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6218 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6219 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6220 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6221 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6222 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6223 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6224 }
6225
6226 static void niu_sync_bmac_stats(struct niu *np)
6227 {
6228 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6229
6230 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6231 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6232
6233 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6234 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6235 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6236 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6237 }
6238
6239 static void niu_sync_mac_stats(struct niu *np)
6240 {
6241 if (np->flags & NIU_FLAGS_XMAC)
6242 niu_sync_xmac_stats(np);
6243 else
6244 niu_sync_bmac_stats(np);
6245 }
6246
6247 static void niu_get_rx_stats(struct niu *np)
6248 {
6249 unsigned long pkts, dropped, errors, bytes;
6250 int i;
6251
6252 pkts = dropped = errors = bytes = 0;
6253 for (i = 0; i < np->num_rx_rings; i++) {
6254 struct rx_ring_info *rp = &np->rx_rings[i];
6255
6256 niu_sync_rx_discard_stats(np, rp, 0);
6257
6258 pkts += rp->rx_packets;
6259 bytes += rp->rx_bytes;
6260 dropped += rp->rx_dropped;
6261 errors += rp->rx_errors;
6262 }
6263 np->dev->stats.rx_packets = pkts;
6264 np->dev->stats.rx_bytes = bytes;
6265 np->dev->stats.rx_dropped = dropped;
6266 np->dev->stats.rx_errors = errors;
6267 }
6268
6269 static void niu_get_tx_stats(struct niu *np)
6270 {
6271 unsigned long pkts, errors, bytes;
6272 int i;
6273
6274 pkts = errors = bytes = 0;
6275 for (i = 0; i < np->num_tx_rings; i++) {
6276 struct tx_ring_info *rp = &np->tx_rings[i];
6277
6278 pkts += rp->tx_packets;
6279 bytes += rp->tx_bytes;
6280 errors += rp->tx_errors;
6281 }
6282 np->dev->stats.tx_packets = pkts;
6283 np->dev->stats.tx_bytes = bytes;
6284 np->dev->stats.tx_errors = errors;
6285 }
6286
6287 static struct net_device_stats *niu_get_stats(struct net_device *dev)
6288 {
6289 struct niu *np = netdev_priv(dev);
6290
6291 niu_get_rx_stats(np);
6292 niu_get_tx_stats(np);
6293
6294 return &dev->stats;
6295 }
6296
6297 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6298 {
6299 int i;
6300
6301 for (i = 0; i < 16; i++)
6302 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6303 }
6304
6305 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6306 {
6307 int i;
6308
6309 for (i = 0; i < 16; i++)
6310 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6311 }
6312
6313 static void niu_load_hash(struct niu *np, u16 *hash)
6314 {
6315 if (np->flags & NIU_FLAGS_XMAC)
6316 niu_load_hash_xmac(np, hash);
6317 else
6318 niu_load_hash_bmac(np, hash);
6319 }
6320
6321 static void niu_set_rx_mode(struct net_device *dev)
6322 {
6323 struct niu *np = netdev_priv(dev);
6324 int i, alt_cnt, err;
6325 struct netdev_hw_addr *ha;
6326 unsigned long flags;
6327 u16 hash[16] = { 0, };
6328
6329 spin_lock_irqsave(&np->lock, flags);
6330 niu_enable_rx_mac(np, 0);
6331
6332 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6333 if (dev->flags & IFF_PROMISC)
6334 np->flags |= NIU_FLAGS_PROMISC;
6335 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6336 np->flags |= NIU_FLAGS_MCAST;
6337
6338 alt_cnt = netdev_uc_count(dev);
6339 if (alt_cnt > niu_num_alt_addr(np)) {
6340 alt_cnt = 0;
6341 np->flags |= NIU_FLAGS_PROMISC;
6342 }
6343
6344 if (alt_cnt) {
6345 int index = 0;
6346
6347 netdev_for_each_uc_addr(ha, dev) {
6348 err = niu_set_alt_mac(np, index, ha->addr);
6349 if (err)
6350 netdev_warn(dev, "Error %d adding alt mac %d\n",
6351 err, index);
6352 err = niu_enable_alt_mac(np, index, 1);
6353 if (err)
6354 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6355 err, index);
6356
6357 index++;
6358 }
6359 } else {
6360 int alt_start;
6361 if (np->flags & NIU_FLAGS_XMAC)
6362 alt_start = 0;
6363 else
6364 alt_start = 1;
6365 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6366 err = niu_enable_alt_mac(np, i, 0);
6367 if (err)
6368 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6369 err, i);
6370 }
6371 }
6372 if (dev->flags & IFF_ALLMULTI) {
6373 for (i = 0; i < 16; i++)
6374 hash[i] = 0xffff;
6375 } else if (!netdev_mc_empty(dev)) {
6376 netdev_for_each_mc_addr(ha, dev) {
6377 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6378
6379 crc >>= 24;
6380 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6381 }
6382 }
6383
6384 if (np->flags & NIU_FLAGS_MCAST)
6385 niu_load_hash(np, hash);
6386
6387 niu_enable_rx_mac(np, 1);
6388 spin_unlock_irqrestore(&np->lock, flags);
6389 }
6390
6391 static int niu_set_mac_addr(struct net_device *dev, void *p)
6392 {
6393 struct niu *np = netdev_priv(dev);
6394 struct sockaddr *addr = p;
6395 unsigned long flags;
6396
6397 if (!is_valid_ether_addr(addr->sa_data))
6398 return -EINVAL;
6399
6400 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6401
6402 if (!netif_running(dev))
6403 return 0;
6404
6405 spin_lock_irqsave(&np->lock, flags);
6406 niu_enable_rx_mac(np, 0);
6407 niu_set_primary_mac(np, dev->dev_addr);
6408 niu_enable_rx_mac(np, 1);
6409 spin_unlock_irqrestore(&np->lock, flags);
6410
6411 return 0;
6412 }
6413
6414 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6415 {
6416 return -EOPNOTSUPP;
6417 }
6418
6419 static void niu_netif_stop(struct niu *np)
6420 {
6421 np->dev->trans_start = jiffies; /* prevent tx timeout */
6422
6423 niu_disable_napi(np);
6424
6425 netif_tx_disable(np->dev);
6426 }
6427
6428 static void niu_netif_start(struct niu *np)
6429 {
6430 /* NOTE: unconditional netif_wake_queue is only appropriate
6431 * so long as all callers are assured to have free tx slots
6432 * (such as after niu_init_hw).
6433 */
6434 netif_tx_wake_all_queues(np->dev);
6435
6436 niu_enable_napi(np);
6437
6438 niu_enable_interrupts(np, 1);
6439 }
6440
6441 static void niu_reset_buffers(struct niu *np)
6442 {
6443 int i, j, k, err;
6444
6445 if (np->rx_rings) {
6446 for (i = 0; i < np->num_rx_rings; i++) {
6447 struct rx_ring_info *rp = &np->rx_rings[i];
6448
6449 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6450 struct page *page;
6451
6452 page = rp->rxhash[j];
6453 while (page) {
6454 struct page *next =
6455 (struct page *) page->mapping;
6456 u64 base = page->index;
6457 base = base >> RBR_DESCR_ADDR_SHIFT;
6458 rp->rbr[k++] = cpu_to_le32(base);
6459 page = next;
6460 }
6461 }
6462 for (; k < MAX_RBR_RING_SIZE; k++) {
6463 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6464 if (unlikely(err))
6465 break;
6466 }
6467
6468 rp->rbr_index = rp->rbr_table_size - 1;
6469 rp->rcr_index = 0;
6470 rp->rbr_pending = 0;
6471 rp->rbr_refill_pending = 0;
6472 }
6473 }
6474 if (np->tx_rings) {
6475 for (i = 0; i < np->num_tx_rings; i++) {
6476 struct tx_ring_info *rp = &np->tx_rings[i];
6477
6478 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6479 if (rp->tx_buffs[j].skb)
6480 (void) release_tx_packet(np, rp, j);
6481 }
6482
6483 rp->pending = MAX_TX_RING_SIZE;
6484 rp->prod = 0;
6485 rp->cons = 0;
6486 rp->wrap_bit = 0;
6487 }
6488 }
6489 }
6490
6491 static void niu_reset_task(struct work_struct *work)
6492 {
6493 struct niu *np = container_of(work, struct niu, reset_task);
6494 unsigned long flags;
6495 int err;
6496
6497 spin_lock_irqsave(&np->lock, flags);
6498 if (!netif_running(np->dev)) {
6499 spin_unlock_irqrestore(&np->lock, flags);
6500 return;
6501 }
6502
6503 spin_unlock_irqrestore(&np->lock, flags);
6504
6505 del_timer_sync(&np->timer);
6506
6507 niu_netif_stop(np);
6508
6509 spin_lock_irqsave(&np->lock, flags);
6510
6511 niu_stop_hw(np);
6512
6513 spin_unlock_irqrestore(&np->lock, flags);
6514
6515 niu_reset_buffers(np);
6516
6517 spin_lock_irqsave(&np->lock, flags);
6518
6519 err = niu_init_hw(np);
6520 if (!err) {
6521 np->timer.expires = jiffies + HZ;
6522 add_timer(&np->timer);
6523 niu_netif_start(np);
6524 }
6525
6526 spin_unlock_irqrestore(&np->lock, flags);
6527 }
6528
6529 static void niu_tx_timeout(struct net_device *dev)
6530 {
6531 struct niu *np = netdev_priv(dev);
6532
6533 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6534 dev->name);
6535
6536 schedule_work(&np->reset_task);
6537 }
6538
6539 static void niu_set_txd(struct tx_ring_info *rp, int index,
6540 u64 mapping, u64 len, u64 mark,
6541 u64 n_frags)
6542 {
6543 __le64 *desc = &rp->descr[index];
6544
6545 *desc = cpu_to_le64(mark |
6546 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6547 (len << TX_DESC_TR_LEN_SHIFT) |
6548 (mapping & TX_DESC_SAD));
6549 }
6550
6551 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6552 u64 pad_bytes, u64 len)
6553 {
6554 u16 eth_proto, eth_proto_inner;
6555 u64 csum_bits, l3off, ihl, ret;
6556 u8 ip_proto;
6557 int ipv6;
6558
6559 eth_proto = be16_to_cpu(ehdr->h_proto);
6560 eth_proto_inner = eth_proto;
6561 if (eth_proto == ETH_P_8021Q) {
6562 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6563 __be16 val = vp->h_vlan_encapsulated_proto;
6564
6565 eth_proto_inner = be16_to_cpu(val);
6566 }
6567
6568 ipv6 = ihl = 0;
6569 switch (skb->protocol) {
6570 case cpu_to_be16(ETH_P_IP):
6571 ip_proto = ip_hdr(skb)->protocol;
6572 ihl = ip_hdr(skb)->ihl;
6573 break;
6574 case cpu_to_be16(ETH_P_IPV6):
6575 ip_proto = ipv6_hdr(skb)->nexthdr;
6576 ihl = (40 >> 2);
6577 ipv6 = 1;
6578 break;
6579 default:
6580 ip_proto = ihl = 0;
6581 break;
6582 }
6583
6584 csum_bits = TXHDR_CSUM_NONE;
6585 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6586 u64 start, stuff;
6587
6588 csum_bits = (ip_proto == IPPROTO_TCP ?
6589 TXHDR_CSUM_TCP :
6590 (ip_proto == IPPROTO_UDP ?
6591 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6592
6593 start = skb_transport_offset(skb) -
6594 (pad_bytes + sizeof(struct tx_pkt_hdr));
6595 stuff = start + skb->csum_offset;
6596
6597 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6598 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6599 }
6600
6601 l3off = skb_network_offset(skb) -
6602 (pad_bytes + sizeof(struct tx_pkt_hdr));
6603
6604 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6605 (len << TXHDR_LEN_SHIFT) |
6606 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6607 (ihl << TXHDR_IHL_SHIFT) |
6608 ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6609 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6610 (ipv6 ? TXHDR_IP_VER : 0) |
6611 csum_bits);
6612
6613 return ret;
6614 }
6615
6616 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6617 struct net_device *dev)
6618 {
6619 struct niu *np = netdev_priv(dev);
6620 unsigned long align, headroom;
6621 struct netdev_queue *txq;
6622 struct tx_ring_info *rp;
6623 struct tx_pkt_hdr *tp;
6624 unsigned int len, nfg;
6625 struct ethhdr *ehdr;
6626 int prod, i, tlen;
6627 u64 mapping, mrk;
6628
6629 i = skb_get_queue_mapping(skb);
6630 rp = &np->tx_rings[i];
6631 txq = netdev_get_tx_queue(dev, i);
6632
6633 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6634 netif_tx_stop_queue(txq);
6635 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6636 rp->tx_errors++;
6637 return NETDEV_TX_BUSY;
6638 }
6639
6640 if (skb->len < ETH_ZLEN) {
6641 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6642
6643 if (skb_pad(skb, pad_bytes))
6644 goto out;
6645 skb_put(skb, pad_bytes);
6646 }
6647
6648 len = sizeof(struct tx_pkt_hdr) + 15;
6649 if (skb_headroom(skb) < len) {
6650 struct sk_buff *skb_new;
6651
6652 skb_new = skb_realloc_headroom(skb, len);
6653 if (!skb_new) {
6654 rp->tx_errors++;
6655 goto out_drop;
6656 }
6657 kfree_skb(skb);
6658 skb = skb_new;
6659 } else
6660 skb_orphan(skb);
6661
6662 align = ((unsigned long) skb->data & (16 - 1));
6663 headroom = align + sizeof(struct tx_pkt_hdr);
6664
6665 ehdr = (struct ethhdr *) skb->data;
6666 tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6667
6668 len = skb->len - sizeof(struct tx_pkt_hdr);
6669 tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6670 tp->resv = 0;
6671
6672 len = skb_headlen(skb);
6673 mapping = np->ops->map_single(np->device, skb->data,
6674 len, DMA_TO_DEVICE);
6675
6676 prod = rp->prod;
6677
6678 rp->tx_buffs[prod].skb = skb;
6679 rp->tx_buffs[prod].mapping = mapping;
6680
6681 mrk = TX_DESC_SOP;
6682 if (++rp->mark_counter == rp->mark_freq) {
6683 rp->mark_counter = 0;
6684 mrk |= TX_DESC_MARK;
6685 rp->mark_pending++;
6686 }
6687
6688 tlen = len;
6689 nfg = skb_shinfo(skb)->nr_frags;
6690 while (tlen > 0) {
6691 tlen -= MAX_TX_DESC_LEN;
6692 nfg++;
6693 }
6694
6695 while (len > 0) {
6696 unsigned int this_len = len;
6697
6698 if (this_len > MAX_TX_DESC_LEN)
6699 this_len = MAX_TX_DESC_LEN;
6700
6701 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6702 mrk = nfg = 0;
6703
6704 prod = NEXT_TX(rp, prod);
6705 mapping += this_len;
6706 len -= this_len;
6707 }
6708
6709 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6710 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6711
6712 len = frag->size;
6713 mapping = np->ops->map_page(np->device, frag->page,
6714 frag->page_offset, len,
6715 DMA_TO_DEVICE);
6716
6717 rp->tx_buffs[prod].skb = NULL;
6718 rp->tx_buffs[prod].mapping = mapping;
6719
6720 niu_set_txd(rp, prod, mapping, len, 0, 0);
6721
6722 prod = NEXT_TX(rp, prod);
6723 }
6724
6725 if (prod < rp->prod)
6726 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6727 rp->prod = prod;
6728
6729 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6730
6731 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6732 netif_tx_stop_queue(txq);
6733 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6734 netif_tx_wake_queue(txq);
6735 }
6736
6737 out:
6738 return NETDEV_TX_OK;
6739
6740 out_drop:
6741 rp->tx_errors++;
6742 kfree_skb(skb);
6743 goto out;
6744 }
6745
6746 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6747 {
6748 struct niu *np = netdev_priv(dev);
6749 int err, orig_jumbo, new_jumbo;
6750
6751 if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6752 return -EINVAL;
6753
6754 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6755 new_jumbo = (new_mtu > ETH_DATA_LEN);
6756
6757 dev->mtu = new_mtu;
6758
6759 if (!netif_running(dev) ||
6760 (orig_jumbo == new_jumbo))
6761 return 0;
6762
6763 niu_full_shutdown(np, dev);
6764
6765 niu_free_channels(np);
6766
6767 niu_enable_napi(np);
6768
6769 err = niu_alloc_channels(np);
6770 if (err)
6771 return err;
6772
6773 spin_lock_irq(&np->lock);
6774
6775 err = niu_init_hw(np);
6776 if (!err) {
6777 init_timer(&np->timer);
6778 np->timer.expires = jiffies + HZ;
6779 np->timer.data = (unsigned long) np;
6780 np->timer.function = niu_timer;
6781
6782 err = niu_enable_interrupts(np, 1);
6783 if (err)
6784 niu_stop_hw(np);
6785 }
6786
6787 spin_unlock_irq(&np->lock);
6788
6789 if (!err) {
6790 netif_tx_start_all_queues(dev);
6791 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6792 netif_carrier_on(dev);
6793
6794 add_timer(&np->timer);
6795 }
6796
6797 return err;
6798 }
6799
6800 static void niu_get_drvinfo(struct net_device *dev,
6801 struct ethtool_drvinfo *info)
6802 {
6803 struct niu *np = netdev_priv(dev);
6804 struct niu_vpd *vpd = &np->vpd;
6805
6806 strcpy(info->driver, DRV_MODULE_NAME);
6807 strcpy(info->version, DRV_MODULE_VERSION);
6808 sprintf(info->fw_version, "%d.%d",
6809 vpd->fcode_major, vpd->fcode_minor);
6810 if (np->parent->plat_type != PLAT_TYPE_NIU)
6811 strcpy(info->bus_info, pci_name(np->pdev));
6812 }
6813
6814 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6815 {
6816 struct niu *np = netdev_priv(dev);
6817 struct niu_link_config *lp;
6818
6819 lp = &np->link_config;
6820
6821 memset(cmd, 0, sizeof(*cmd));
6822 cmd->phy_address = np->phy_addr;
6823 cmd->supported = lp->supported;
6824 cmd->advertising = lp->active_advertising;
6825 cmd->autoneg = lp->active_autoneg;
6826 cmd->speed = lp->active_speed;
6827 cmd->duplex = lp->active_duplex;
6828 cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6829 cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6830 XCVR_EXTERNAL : XCVR_INTERNAL;
6831
6832 return 0;
6833 }
6834
6835 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6836 {
6837 struct niu *np = netdev_priv(dev);
6838 struct niu_link_config *lp = &np->link_config;
6839
6840 lp->advertising = cmd->advertising;
6841 lp->speed = cmd->speed;
6842 lp->duplex = cmd->duplex;
6843 lp->autoneg = cmd->autoneg;
6844 return niu_init_link(np);
6845 }
6846
6847 static u32 niu_get_msglevel(struct net_device *dev)
6848 {
6849 struct niu *np = netdev_priv(dev);
6850 return np->msg_enable;
6851 }
6852
6853 static void niu_set_msglevel(struct net_device *dev, u32 value)
6854 {
6855 struct niu *np = netdev_priv(dev);
6856 np->msg_enable = value;
6857 }
6858
6859 static int niu_nway_reset(struct net_device *dev)
6860 {
6861 struct niu *np = netdev_priv(dev);
6862
6863 if (np->link_config.autoneg)
6864 return niu_init_link(np);
6865
6866 return 0;
6867 }
6868
6869 static int niu_get_eeprom_len(struct net_device *dev)
6870 {
6871 struct niu *np = netdev_priv(dev);
6872
6873 return np->eeprom_len;
6874 }
6875
6876 static int niu_get_eeprom(struct net_device *dev,
6877 struct ethtool_eeprom *eeprom, u8 *data)
6878 {
6879 struct niu *np = netdev_priv(dev);
6880 u32 offset, len, val;
6881
6882 offset = eeprom->offset;
6883 len = eeprom->len;
6884
6885 if (offset + len < offset)
6886 return -EINVAL;
6887 if (offset >= np->eeprom_len)
6888 return -EINVAL;
6889 if (offset + len > np->eeprom_len)
6890 len = eeprom->len = np->eeprom_len - offset;
6891
6892 if (offset & 3) {
6893 u32 b_offset, b_count;
6894
6895 b_offset = offset & 3;
6896 b_count = 4 - b_offset;
6897 if (b_count > len)
6898 b_count = len;
6899
6900 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6901 memcpy(data, ((char *)&val) + b_offset, b_count);
6902 data += b_count;
6903 len -= b_count;
6904 offset += b_count;
6905 }
6906 while (len >= 4) {
6907 val = nr64(ESPC_NCR(offset / 4));
6908 memcpy(data, &val, 4);
6909 data += 4;
6910 len -= 4;
6911 offset += 4;
6912 }
6913 if (len) {
6914 val = nr64(ESPC_NCR(offset / 4));
6915 memcpy(data, &val, len);
6916 }
6917 return 0;
6918 }
6919
6920 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6921 {
6922 switch (flow_type) {
6923 case TCP_V4_FLOW:
6924 case TCP_V6_FLOW:
6925 *pid = IPPROTO_TCP;
6926 break;
6927 case UDP_V4_FLOW:
6928 case UDP_V6_FLOW:
6929 *pid = IPPROTO_UDP;
6930 break;
6931 case SCTP_V4_FLOW:
6932 case SCTP_V6_FLOW:
6933 *pid = IPPROTO_SCTP;
6934 break;
6935 case AH_V4_FLOW:
6936 case AH_V6_FLOW:
6937 *pid = IPPROTO_AH;
6938 break;
6939 case ESP_V4_FLOW:
6940 case ESP_V6_FLOW:
6941 *pid = IPPROTO_ESP;
6942 break;
6943 default:
6944 *pid = 0;
6945 break;
6946 }
6947 }
6948
6949 static int niu_class_to_ethflow(u64 class, int *flow_type)
6950 {
6951 switch (class) {
6952 case CLASS_CODE_TCP_IPV4:
6953 *flow_type = TCP_V4_FLOW;
6954 break;
6955 case CLASS_CODE_UDP_IPV4:
6956 *flow_type = UDP_V4_FLOW;
6957 break;
6958 case CLASS_CODE_AH_ESP_IPV4:
6959 *flow_type = AH_V4_FLOW;
6960 break;
6961 case CLASS_CODE_SCTP_IPV4:
6962 *flow_type = SCTP_V4_FLOW;
6963 break;
6964 case CLASS_CODE_TCP_IPV6:
6965 *flow_type = TCP_V6_FLOW;
6966 break;
6967 case CLASS_CODE_UDP_IPV6:
6968 *flow_type = UDP_V6_FLOW;
6969 break;
6970 case CLASS_CODE_AH_ESP_IPV6:
6971 *flow_type = AH_V6_FLOW;
6972 break;
6973 case CLASS_CODE_SCTP_IPV6:
6974 *flow_type = SCTP_V6_FLOW;
6975 break;
6976 case CLASS_CODE_USER_PROG1:
6977 case CLASS_CODE_USER_PROG2:
6978 case CLASS_CODE_USER_PROG3:
6979 case CLASS_CODE_USER_PROG4:
6980 *flow_type = IP_USER_FLOW;
6981 break;
6982 default:
6983 return 0;
6984 }
6985
6986 return 1;
6987 }
6988
6989 static int niu_ethflow_to_class(int flow_type, u64 *class)
6990 {
6991 switch (flow_type) {
6992 case TCP_V4_FLOW:
6993 *class = CLASS_CODE_TCP_IPV4;
6994 break;
6995 case UDP_V4_FLOW:
6996 *class = CLASS_CODE_UDP_IPV4;
6997 break;
6998 case AH_V4_FLOW:
6999 case ESP_V4_FLOW:
7000 *class = CLASS_CODE_AH_ESP_IPV4;
7001 break;
7002 case SCTP_V4_FLOW:
7003 *class = CLASS_CODE_SCTP_IPV4;
7004 break;
7005 case TCP_V6_FLOW:
7006 *class = CLASS_CODE_TCP_IPV6;
7007 break;
7008 case UDP_V6_FLOW:
7009 *class = CLASS_CODE_UDP_IPV6;
7010 break;
7011 case AH_V6_FLOW:
7012 case ESP_V6_FLOW:
7013 *class = CLASS_CODE_AH_ESP_IPV6;
7014 break;
7015 case SCTP_V6_FLOW:
7016 *class = CLASS_CODE_SCTP_IPV6;
7017 break;
7018 default:
7019 return 0;
7020 }
7021
7022 return 1;
7023 }
7024
7025 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7026 {
7027 u64 ethflow = 0;
7028
7029 if (flow_key & FLOW_KEY_L2DA)
7030 ethflow |= RXH_L2DA;
7031 if (flow_key & FLOW_KEY_VLAN)
7032 ethflow |= RXH_VLAN;
7033 if (flow_key & FLOW_KEY_IPSA)
7034 ethflow |= RXH_IP_SRC;
7035 if (flow_key & FLOW_KEY_IPDA)
7036 ethflow |= RXH_IP_DST;
7037 if (flow_key & FLOW_KEY_PROTO)
7038 ethflow |= RXH_L3_PROTO;
7039 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7040 ethflow |= RXH_L4_B_0_1;
7041 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7042 ethflow |= RXH_L4_B_2_3;
7043
7044 return ethflow;
7045
7046 }
7047
7048 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7049 {
7050 u64 key = 0;
7051
7052 if (ethflow & RXH_L2DA)
7053 key |= FLOW_KEY_L2DA;
7054 if (ethflow & RXH_VLAN)
7055 key |= FLOW_KEY_VLAN;
7056 if (ethflow & RXH_IP_SRC)
7057 key |= FLOW_KEY_IPSA;
7058 if (ethflow & RXH_IP_DST)
7059 key |= FLOW_KEY_IPDA;
7060 if (ethflow & RXH_L3_PROTO)
7061 key |= FLOW_KEY_PROTO;
7062 if (ethflow & RXH_L4_B_0_1)
7063 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7064 if (ethflow & RXH_L4_B_2_3)
7065 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7066
7067 *flow_key = key;
7068
7069 return 1;
7070
7071 }
7072
7073 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7074 {
7075 u64 class;
7076
7077 nfc->data = 0;
7078
7079 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7080 return -EINVAL;
7081
7082 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7083 TCAM_KEY_DISC)
7084 nfc->data = RXH_DISCARD;
7085 else
7086 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7087 CLASS_CODE_USER_PROG1]);
7088 return 0;
7089 }
7090
7091 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7092 struct ethtool_rx_flow_spec *fsp)
7093 {
7094
7095 fsp->h_u.tcp_ip4_spec.ip4src = (tp->key[3] & TCAM_V4KEY3_SADDR) >>
7096 TCAM_V4KEY3_SADDR_SHIFT;
7097 fsp->h_u.tcp_ip4_spec.ip4dst = (tp->key[3] & TCAM_V4KEY3_DADDR) >>
7098 TCAM_V4KEY3_DADDR_SHIFT;
7099 fsp->m_u.tcp_ip4_spec.ip4src = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >>
7100 TCAM_V4KEY3_SADDR_SHIFT;
7101 fsp->m_u.tcp_ip4_spec.ip4dst = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >>
7102 TCAM_V4KEY3_DADDR_SHIFT;
7103
7104 fsp->h_u.tcp_ip4_spec.ip4src =
7105 cpu_to_be32(fsp->h_u.tcp_ip4_spec.ip4src);
7106 fsp->m_u.tcp_ip4_spec.ip4src =
7107 cpu_to_be32(fsp->m_u.tcp_ip4_spec.ip4src);
7108 fsp->h_u.tcp_ip4_spec.ip4dst =
7109 cpu_to_be32(fsp->h_u.tcp_ip4_spec.ip4dst);
7110 fsp->m_u.tcp_ip4_spec.ip4dst =
7111 cpu_to_be32(fsp->m_u.tcp_ip4_spec.ip4dst);
7112
7113 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7114 TCAM_V4KEY2_TOS_SHIFT;
7115 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7116 TCAM_V4KEY2_TOS_SHIFT;
7117
7118 switch (fsp->flow_type) {
7119 case TCP_V4_FLOW:
7120 case UDP_V4_FLOW:
7121 case SCTP_V4_FLOW:
7122 fsp->h_u.tcp_ip4_spec.psrc =
7123 ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7124 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7125 fsp->h_u.tcp_ip4_spec.pdst =
7126 ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7127 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7128 fsp->m_u.tcp_ip4_spec.psrc =
7129 ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7130 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7131 fsp->m_u.tcp_ip4_spec.pdst =
7132 ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7133 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7134
7135 fsp->h_u.tcp_ip4_spec.psrc =
7136 cpu_to_be16(fsp->h_u.tcp_ip4_spec.psrc);
7137 fsp->h_u.tcp_ip4_spec.pdst =
7138 cpu_to_be16(fsp->h_u.tcp_ip4_spec.pdst);
7139 fsp->m_u.tcp_ip4_spec.psrc =
7140 cpu_to_be16(fsp->m_u.tcp_ip4_spec.psrc);
7141 fsp->m_u.tcp_ip4_spec.pdst =
7142 cpu_to_be16(fsp->m_u.tcp_ip4_spec.pdst);
7143 break;
7144 case AH_V4_FLOW:
7145 case ESP_V4_FLOW:
7146 fsp->h_u.ah_ip4_spec.spi =
7147 (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7148 TCAM_V4KEY2_PORT_SPI_SHIFT;
7149 fsp->m_u.ah_ip4_spec.spi =
7150 (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7151 TCAM_V4KEY2_PORT_SPI_SHIFT;
7152
7153 fsp->h_u.ah_ip4_spec.spi =
7154 cpu_to_be32(fsp->h_u.ah_ip4_spec.spi);
7155 fsp->m_u.ah_ip4_spec.spi =
7156 cpu_to_be32(fsp->m_u.ah_ip4_spec.spi);
7157 break;
7158 case IP_USER_FLOW:
7159 fsp->h_u.usr_ip4_spec.l4_4_bytes =
7160 (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7161 TCAM_V4KEY2_PORT_SPI_SHIFT;
7162 fsp->m_u.usr_ip4_spec.l4_4_bytes =
7163 (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7164 TCAM_V4KEY2_PORT_SPI_SHIFT;
7165
7166 fsp->h_u.usr_ip4_spec.l4_4_bytes =
7167 cpu_to_be32(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7168 fsp->m_u.usr_ip4_spec.l4_4_bytes =
7169 cpu_to_be32(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7170
7171 fsp->h_u.usr_ip4_spec.proto =
7172 (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7173 TCAM_V4KEY2_PROTO_SHIFT;
7174 fsp->m_u.usr_ip4_spec.proto =
7175 (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7176 TCAM_V4KEY2_PROTO_SHIFT;
7177
7178 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7179 break;
7180 default:
7181 break;
7182 }
7183 }
7184
7185 static int niu_get_ethtool_tcam_entry(struct niu *np,
7186 struct ethtool_rxnfc *nfc)
7187 {
7188 struct niu_parent *parent = np->parent;
7189 struct niu_tcam_entry *tp;
7190 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7191 u16 idx;
7192 u64 class;
7193 int ret = 0;
7194
7195 idx = tcam_get_index(np, (u16)nfc->fs.location);
7196
7197 tp = &parent->tcam[idx];
7198 if (!tp->valid) {
7199 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7200 parent->index, (u16)nfc->fs.location, idx);
7201 return -EINVAL;
7202 }
7203
7204 /* fill the flow spec entry */
7205 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7206 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7207 ret = niu_class_to_ethflow(class, &fsp->flow_type);
7208
7209 if (ret < 0) {
7210 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7211 parent->index);
7212 ret = -EINVAL;
7213 goto out;
7214 }
7215
7216 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7217 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7218 TCAM_V4KEY2_PROTO_SHIFT;
7219 if (proto == IPPROTO_ESP) {
7220 if (fsp->flow_type == AH_V4_FLOW)
7221 fsp->flow_type = ESP_V4_FLOW;
7222 else
7223 fsp->flow_type = ESP_V6_FLOW;
7224 }
7225 }
7226
7227 switch (fsp->flow_type) {
7228 case TCP_V4_FLOW:
7229 case UDP_V4_FLOW:
7230 case SCTP_V4_FLOW:
7231 case AH_V4_FLOW:
7232 case ESP_V4_FLOW:
7233 niu_get_ip4fs_from_tcam_key(tp, fsp);
7234 break;
7235 case TCP_V6_FLOW:
7236 case UDP_V6_FLOW:
7237 case SCTP_V6_FLOW:
7238 case AH_V6_FLOW:
7239 case ESP_V6_FLOW:
7240 /* Not yet implemented */
7241 ret = -EINVAL;
7242 break;
7243 case IP_USER_FLOW:
7244 niu_get_ip4fs_from_tcam_key(tp, fsp);
7245 break;
7246 default:
7247 ret = -EINVAL;
7248 break;
7249 }
7250
7251 if (ret < 0)
7252 goto out;
7253
7254 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7255 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7256 else
7257 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7258 TCAM_ASSOCDATA_OFFSET_SHIFT;
7259
7260 /* put the tcam size here */
7261 nfc->data = tcam_get_size(np);
7262 out:
7263 return ret;
7264 }
7265
7266 static int niu_get_ethtool_tcam_all(struct niu *np,
7267 struct ethtool_rxnfc *nfc,
7268 u32 *rule_locs)
7269 {
7270 struct niu_parent *parent = np->parent;
7271 struct niu_tcam_entry *tp;
7272 int i, idx, cnt;
7273 u16 n_entries;
7274 unsigned long flags;
7275
7276
7277 /* put the tcam size here */
7278 nfc->data = tcam_get_size(np);
7279
7280 niu_lock_parent(np, flags);
7281 n_entries = nfc->rule_cnt;
7282 for (cnt = 0, i = 0; i < nfc->data; i++) {
7283 idx = tcam_get_index(np, i);
7284 tp = &parent->tcam[idx];
7285 if (!tp->valid)
7286 continue;
7287 rule_locs[cnt] = i;
7288 cnt++;
7289 }
7290 niu_unlock_parent(np, flags);
7291
7292 if (n_entries != cnt) {
7293 /* print warning, this should not happen */
7294 netdev_info(np->dev, "niu%d: In %s(): n_entries[%d] != cnt[%d]!!!\n",
7295 np->parent->index, __func__, n_entries, cnt);
7296 }
7297
7298 return 0;
7299 }
7300
7301 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7302 void *rule_locs)
7303 {
7304 struct niu *np = netdev_priv(dev);
7305 int ret = 0;
7306
7307 switch (cmd->cmd) {
7308 case ETHTOOL_GRXFH:
7309 ret = niu_get_hash_opts(np, cmd);
7310 break;
7311 case ETHTOOL_GRXRINGS:
7312 cmd->data = np->num_rx_rings;
7313 break;
7314 case ETHTOOL_GRXCLSRLCNT:
7315 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7316 break;
7317 case ETHTOOL_GRXCLSRULE:
7318 ret = niu_get_ethtool_tcam_entry(np, cmd);
7319 break;
7320 case ETHTOOL_GRXCLSRLALL:
7321 ret = niu_get_ethtool_tcam_all(np, cmd, (u32 *)rule_locs);
7322 break;
7323 default:
7324 ret = -EINVAL;
7325 break;
7326 }
7327
7328 return ret;
7329 }
7330
7331 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7332 {
7333 u64 class;
7334 u64 flow_key = 0;
7335 unsigned long flags;
7336
7337 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7338 return -EINVAL;
7339
7340 if (class < CLASS_CODE_USER_PROG1 ||
7341 class > CLASS_CODE_SCTP_IPV6)
7342 return -EINVAL;
7343
7344 if (nfc->data & RXH_DISCARD) {
7345 niu_lock_parent(np, flags);
7346 flow_key = np->parent->tcam_key[class -
7347 CLASS_CODE_USER_PROG1];
7348 flow_key |= TCAM_KEY_DISC;
7349 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7350 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7351 niu_unlock_parent(np, flags);
7352 return 0;
7353 } else {
7354 /* Discard was set before, but is not set now */
7355 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7356 TCAM_KEY_DISC) {
7357 niu_lock_parent(np, flags);
7358 flow_key = np->parent->tcam_key[class -
7359 CLASS_CODE_USER_PROG1];
7360 flow_key &= ~TCAM_KEY_DISC;
7361 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7362 flow_key);
7363 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7364 flow_key;
7365 niu_unlock_parent(np, flags);
7366 }
7367 }
7368
7369 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7370 return -EINVAL;
7371
7372 niu_lock_parent(np, flags);
7373 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7374 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7375 niu_unlock_parent(np, flags);
7376
7377 return 0;
7378 }
7379
7380 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7381 struct niu_tcam_entry *tp,
7382 int l2_rdc_tab, u64 class)
7383 {
7384 u8 pid = 0;
7385 u32 sip, dip, sipm, dipm, spi, spim;
7386 u16 sport, dport, spm, dpm;
7387
7388 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7389 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7390 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7391 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7392
7393 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7394 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7395 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7396 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7397
7398 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7399 tp->key[3] |= dip;
7400
7401 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7402 tp->key_mask[3] |= dipm;
7403
7404 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7405 TCAM_V4KEY2_TOS_SHIFT);
7406 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7407 TCAM_V4KEY2_TOS_SHIFT);
7408 switch (fsp->flow_type) {
7409 case TCP_V4_FLOW:
7410 case UDP_V4_FLOW:
7411 case SCTP_V4_FLOW:
7412 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7413 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7414 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7415 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7416
7417 tp->key[2] |= (((u64)sport << 16) | dport);
7418 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7419 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7420 break;
7421 case AH_V4_FLOW:
7422 case ESP_V4_FLOW:
7423 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7424 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7425
7426 tp->key[2] |= spi;
7427 tp->key_mask[2] |= spim;
7428 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7429 break;
7430 case IP_USER_FLOW:
7431 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7432 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7433
7434 tp->key[2] |= spi;
7435 tp->key_mask[2] |= spim;
7436 pid = fsp->h_u.usr_ip4_spec.proto;
7437 break;
7438 default:
7439 break;
7440 }
7441
7442 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7443 if (pid) {
7444 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7445 }
7446 }
7447
7448 static int niu_add_ethtool_tcam_entry(struct niu *np,
7449 struct ethtool_rxnfc *nfc)
7450 {
7451 struct niu_parent *parent = np->parent;
7452 struct niu_tcam_entry *tp;
7453 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7454 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7455 int l2_rdc_table = rdc_table->first_table_num;
7456 u16 idx;
7457 u64 class;
7458 unsigned long flags;
7459 int err, ret;
7460
7461 ret = 0;
7462
7463 idx = nfc->fs.location;
7464 if (idx >= tcam_get_size(np))
7465 return -EINVAL;
7466
7467 if (fsp->flow_type == IP_USER_FLOW) {
7468 int i;
7469 int add_usr_cls = 0;
7470 int ipv6 = 0;
7471 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7472 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7473
7474 niu_lock_parent(np, flags);
7475
7476 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7477 if (parent->l3_cls[i]) {
7478 if (uspec->proto == parent->l3_cls_pid[i]) {
7479 class = parent->l3_cls[i];
7480 parent->l3_cls_refcnt[i]++;
7481 add_usr_cls = 1;
7482 break;
7483 }
7484 } else {
7485 /* Program new user IP class */
7486 switch (i) {
7487 case 0:
7488 class = CLASS_CODE_USER_PROG1;
7489 break;
7490 case 1:
7491 class = CLASS_CODE_USER_PROG2;
7492 break;
7493 case 2:
7494 class = CLASS_CODE_USER_PROG3;
7495 break;
7496 case 3:
7497 class = CLASS_CODE_USER_PROG4;
7498 break;
7499 default:
7500 break;
7501 }
7502 if (uspec->ip_ver == ETH_RX_NFC_IP6)
7503 ipv6 = 1;
7504 ret = tcam_user_ip_class_set(np, class, ipv6,
7505 uspec->proto,
7506 uspec->tos,
7507 umask->tos);
7508 if (ret)
7509 goto out;
7510
7511 ret = tcam_user_ip_class_enable(np, class, 1);
7512 if (ret)
7513 goto out;
7514 parent->l3_cls[i] = class;
7515 parent->l3_cls_pid[i] = uspec->proto;
7516 parent->l3_cls_refcnt[i]++;
7517 add_usr_cls = 1;
7518 break;
7519 }
7520 }
7521 if (!add_usr_cls) {
7522 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7523 parent->index, __func__, uspec->proto);
7524 ret = -EINVAL;
7525 goto out;
7526 }
7527 niu_unlock_parent(np, flags);
7528 } else {
7529 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7530 return -EINVAL;
7531 }
7532 }
7533
7534 niu_lock_parent(np, flags);
7535
7536 idx = tcam_get_index(np, idx);
7537 tp = &parent->tcam[idx];
7538
7539 memset(tp, 0, sizeof(*tp));
7540
7541 /* fill in the tcam key and mask */
7542 switch (fsp->flow_type) {
7543 case TCP_V4_FLOW:
7544 case UDP_V4_FLOW:
7545 case SCTP_V4_FLOW:
7546 case AH_V4_FLOW:
7547 case ESP_V4_FLOW:
7548 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7549 break;
7550 case TCP_V6_FLOW:
7551 case UDP_V6_FLOW:
7552 case SCTP_V6_FLOW:
7553 case AH_V6_FLOW:
7554 case ESP_V6_FLOW:
7555 /* Not yet implemented */
7556 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7557 parent->index, __func__, fsp->flow_type);
7558 ret = -EINVAL;
7559 goto out;
7560 case IP_USER_FLOW:
7561 if (fsp->h_u.usr_ip4_spec.ip_ver == ETH_RX_NFC_IP4) {
7562 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table,
7563 class);
7564 } else {
7565 /* Not yet implemented */
7566 netdev_info(np->dev, "niu%d: In %s(): usr flow for IPv6 not implemented\n",
7567 parent->index, __func__);
7568 ret = -EINVAL;
7569 goto out;
7570 }
7571 break;
7572 default:
7573 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7574 parent->index, __func__, fsp->flow_type);
7575 ret = -EINVAL;
7576 goto out;
7577 }
7578
7579 /* fill in the assoc data */
7580 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7581 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7582 } else {
7583 if (fsp->ring_cookie >= np->num_rx_rings) {
7584 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7585 parent->index, __func__,
7586 (long long)fsp->ring_cookie);
7587 ret = -EINVAL;
7588 goto out;
7589 }
7590 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7591 (fsp->ring_cookie <<
7592 TCAM_ASSOCDATA_OFFSET_SHIFT));
7593 }
7594
7595 err = tcam_write(np, idx, tp->key, tp->key_mask);
7596 if (err) {
7597 ret = -EINVAL;
7598 goto out;
7599 }
7600 err = tcam_assoc_write(np, idx, tp->assoc_data);
7601 if (err) {
7602 ret = -EINVAL;
7603 goto out;
7604 }
7605
7606 /* validate the entry */
7607 tp->valid = 1;
7608 np->clas.tcam_valid_entries++;
7609 out:
7610 niu_unlock_parent(np, flags);
7611
7612 return ret;
7613 }
7614
7615 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7616 {
7617 struct niu_parent *parent = np->parent;
7618 struct niu_tcam_entry *tp;
7619 u16 idx;
7620 unsigned long flags;
7621 u64 class;
7622 int ret = 0;
7623
7624 if (loc >= tcam_get_size(np))
7625 return -EINVAL;
7626
7627 niu_lock_parent(np, flags);
7628
7629 idx = tcam_get_index(np, loc);
7630 tp = &parent->tcam[idx];
7631
7632 /* if the entry is of a user defined class, then update*/
7633 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7634 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7635
7636 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7637 int i;
7638 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7639 if (parent->l3_cls[i] == class) {
7640 parent->l3_cls_refcnt[i]--;
7641 if (!parent->l3_cls_refcnt[i]) {
7642 /* disable class */
7643 ret = tcam_user_ip_class_enable(np,
7644 class,
7645 0);
7646 if (ret)
7647 goto out;
7648 parent->l3_cls[i] = 0;
7649 parent->l3_cls_pid[i] = 0;
7650 }
7651 break;
7652 }
7653 }
7654 if (i == NIU_L3_PROG_CLS) {
7655 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7656 parent->index, __func__,
7657 (unsigned long long)class);
7658 ret = -EINVAL;
7659 goto out;
7660 }
7661 }
7662
7663 ret = tcam_flush(np, idx);
7664 if (ret)
7665 goto out;
7666
7667 /* invalidate the entry */
7668 tp->valid = 0;
7669 np->clas.tcam_valid_entries--;
7670 out:
7671 niu_unlock_parent(np, flags);
7672
7673 return ret;
7674 }
7675
7676 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7677 {
7678 struct niu *np = netdev_priv(dev);
7679 int ret = 0;
7680
7681 switch (cmd->cmd) {
7682 case ETHTOOL_SRXFH:
7683 ret = niu_set_hash_opts(np, cmd);
7684 break;
7685 case ETHTOOL_SRXCLSRLINS:
7686 ret = niu_add_ethtool_tcam_entry(np, cmd);
7687 break;
7688 case ETHTOOL_SRXCLSRLDEL:
7689 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7690 break;
7691 default:
7692 ret = -EINVAL;
7693 break;
7694 }
7695
7696 return ret;
7697 }
7698
7699 static const struct {
7700 const char string[ETH_GSTRING_LEN];
7701 } niu_xmac_stat_keys[] = {
7702 { "tx_frames" },
7703 { "tx_bytes" },
7704 { "tx_fifo_errors" },
7705 { "tx_overflow_errors" },
7706 { "tx_max_pkt_size_errors" },
7707 { "tx_underflow_errors" },
7708 { "rx_local_faults" },
7709 { "rx_remote_faults" },
7710 { "rx_link_faults" },
7711 { "rx_align_errors" },
7712 { "rx_frags" },
7713 { "rx_mcasts" },
7714 { "rx_bcasts" },
7715 { "rx_hist_cnt1" },
7716 { "rx_hist_cnt2" },
7717 { "rx_hist_cnt3" },
7718 { "rx_hist_cnt4" },
7719 { "rx_hist_cnt5" },
7720 { "rx_hist_cnt6" },
7721 { "rx_hist_cnt7" },
7722 { "rx_octets" },
7723 { "rx_code_violations" },
7724 { "rx_len_errors" },
7725 { "rx_crc_errors" },
7726 { "rx_underflows" },
7727 { "rx_overflows" },
7728 { "pause_off_state" },
7729 { "pause_on_state" },
7730 { "pause_received" },
7731 };
7732
7733 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7734
7735 static const struct {
7736 const char string[ETH_GSTRING_LEN];
7737 } niu_bmac_stat_keys[] = {
7738 { "tx_underflow_errors" },
7739 { "tx_max_pkt_size_errors" },
7740 { "tx_bytes" },
7741 { "tx_frames" },
7742 { "rx_overflows" },
7743 { "rx_frames" },
7744 { "rx_align_errors" },
7745 { "rx_crc_errors" },
7746 { "rx_len_errors" },
7747 { "pause_off_state" },
7748 { "pause_on_state" },
7749 { "pause_received" },
7750 };
7751
7752 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7753
7754 static const struct {
7755 const char string[ETH_GSTRING_LEN];
7756 } niu_rxchan_stat_keys[] = {
7757 { "rx_channel" },
7758 { "rx_packets" },
7759 { "rx_bytes" },
7760 { "rx_dropped" },
7761 { "rx_errors" },
7762 };
7763
7764 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7765
7766 static const struct {
7767 const char string[ETH_GSTRING_LEN];
7768 } niu_txchan_stat_keys[] = {
7769 { "tx_channel" },
7770 { "tx_packets" },
7771 { "tx_bytes" },
7772 { "tx_errors" },
7773 };
7774
7775 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7776
7777 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7778 {
7779 struct niu *np = netdev_priv(dev);
7780 int i;
7781
7782 if (stringset != ETH_SS_STATS)
7783 return;
7784
7785 if (np->flags & NIU_FLAGS_XMAC) {
7786 memcpy(data, niu_xmac_stat_keys,
7787 sizeof(niu_xmac_stat_keys));
7788 data += sizeof(niu_xmac_stat_keys);
7789 } else {
7790 memcpy(data, niu_bmac_stat_keys,
7791 sizeof(niu_bmac_stat_keys));
7792 data += sizeof(niu_bmac_stat_keys);
7793 }
7794 for (i = 0; i < np->num_rx_rings; i++) {
7795 memcpy(data, niu_rxchan_stat_keys,
7796 sizeof(niu_rxchan_stat_keys));
7797 data += sizeof(niu_rxchan_stat_keys);
7798 }
7799 for (i = 0; i < np->num_tx_rings; i++) {
7800 memcpy(data, niu_txchan_stat_keys,
7801 sizeof(niu_txchan_stat_keys));
7802 data += sizeof(niu_txchan_stat_keys);
7803 }
7804 }
7805
7806 static int niu_get_sset_count(struct net_device *dev, int stringset)
7807 {
7808 struct niu *np = netdev_priv(dev);
7809
7810 if (stringset != ETH_SS_STATS)
7811 return -EINVAL;
7812
7813 return ((np->flags & NIU_FLAGS_XMAC ?
7814 NUM_XMAC_STAT_KEYS :
7815 NUM_BMAC_STAT_KEYS) +
7816 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7817 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
7818 }
7819
7820 static void niu_get_ethtool_stats(struct net_device *dev,
7821 struct ethtool_stats *stats, u64 *data)
7822 {
7823 struct niu *np = netdev_priv(dev);
7824 int i;
7825
7826 niu_sync_mac_stats(np);
7827 if (np->flags & NIU_FLAGS_XMAC) {
7828 memcpy(data, &np->mac_stats.xmac,
7829 sizeof(struct niu_xmac_stats));
7830 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7831 } else {
7832 memcpy(data, &np->mac_stats.bmac,
7833 sizeof(struct niu_bmac_stats));
7834 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7835 }
7836 for (i = 0; i < np->num_rx_rings; i++) {
7837 struct rx_ring_info *rp = &np->rx_rings[i];
7838
7839 niu_sync_rx_discard_stats(np, rp, 0);
7840
7841 data[0] = rp->rx_channel;
7842 data[1] = rp->rx_packets;
7843 data[2] = rp->rx_bytes;
7844 data[3] = rp->rx_dropped;
7845 data[4] = rp->rx_errors;
7846 data += 5;
7847 }
7848 for (i = 0; i < np->num_tx_rings; i++) {
7849 struct tx_ring_info *rp = &np->tx_rings[i];
7850
7851 data[0] = rp->tx_channel;
7852 data[1] = rp->tx_packets;
7853 data[2] = rp->tx_bytes;
7854 data[3] = rp->tx_errors;
7855 data += 4;
7856 }
7857 }
7858
7859 static u64 niu_led_state_save(struct niu *np)
7860 {
7861 if (np->flags & NIU_FLAGS_XMAC)
7862 return nr64_mac(XMAC_CONFIG);
7863 else
7864 return nr64_mac(BMAC_XIF_CONFIG);
7865 }
7866
7867 static void niu_led_state_restore(struct niu *np, u64 val)
7868 {
7869 if (np->flags & NIU_FLAGS_XMAC)
7870 nw64_mac(XMAC_CONFIG, val);
7871 else
7872 nw64_mac(BMAC_XIF_CONFIG, val);
7873 }
7874
7875 static void niu_force_led(struct niu *np, int on)
7876 {
7877 u64 val, reg, bit;
7878
7879 if (np->flags & NIU_FLAGS_XMAC) {
7880 reg = XMAC_CONFIG;
7881 bit = XMAC_CONFIG_FORCE_LED_ON;
7882 } else {
7883 reg = BMAC_XIF_CONFIG;
7884 bit = BMAC_XIF_CONFIG_LINK_LED;
7885 }
7886
7887 val = nr64_mac(reg);
7888 if (on)
7889 val |= bit;
7890 else
7891 val &= ~bit;
7892 nw64_mac(reg, val);
7893 }
7894
7895 static int niu_phys_id(struct net_device *dev, u32 data)
7896 {
7897 struct niu *np = netdev_priv(dev);
7898 u64 orig_led_state;
7899 int i;
7900
7901 if (!netif_running(dev))
7902 return -EAGAIN;
7903
7904 if (data == 0)
7905 data = 2;
7906
7907 orig_led_state = niu_led_state_save(np);
7908 for (i = 0; i < (data * 2); i++) {
7909 int on = ((i % 2) == 0);
7910
7911 niu_force_led(np, on);
7912
7913 if (msleep_interruptible(500))
7914 break;
7915 }
7916 niu_led_state_restore(np, orig_led_state);
7917
7918 return 0;
7919 }
7920
7921 static int niu_set_flags(struct net_device *dev, u32 data)
7922 {
7923 if (data & (ETH_FLAG_LRO | ETH_FLAG_NTUPLE))
7924 return -EOPNOTSUPP;
7925
7926 if (data & ETH_FLAG_RXHASH)
7927 dev->features |= NETIF_F_RXHASH;
7928 else
7929 dev->features &= ~NETIF_F_RXHASH;
7930 return 0;
7931 }
7932
7933 static const struct ethtool_ops niu_ethtool_ops = {
7934 .get_drvinfo = niu_get_drvinfo,
7935 .get_link = ethtool_op_get_link,
7936 .get_msglevel = niu_get_msglevel,
7937 .set_msglevel = niu_set_msglevel,
7938 .nway_reset = niu_nway_reset,
7939 .get_eeprom_len = niu_get_eeprom_len,
7940 .get_eeprom = niu_get_eeprom,
7941 .get_settings = niu_get_settings,
7942 .set_settings = niu_set_settings,
7943 .get_strings = niu_get_strings,
7944 .get_sset_count = niu_get_sset_count,
7945 .get_ethtool_stats = niu_get_ethtool_stats,
7946 .phys_id = niu_phys_id,
7947 .get_rxnfc = niu_get_nfc,
7948 .set_rxnfc = niu_set_nfc,
7949 .set_flags = niu_set_flags,
7950 .get_flags = ethtool_op_get_flags,
7951 };
7952
7953 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7954 int ldg, int ldn)
7955 {
7956 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7957 return -EINVAL;
7958 if (ldn < 0 || ldn > LDN_MAX)
7959 return -EINVAL;
7960
7961 parent->ldg_map[ldn] = ldg;
7962
7963 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7964 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7965 * the firmware, and we're not supposed to change them.
7966 * Validate the mapping, because if it's wrong we probably
7967 * won't get any interrupts and that's painful to debug.
7968 */
7969 if (nr64(LDG_NUM(ldn)) != ldg) {
7970 dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7971 np->port, ldn, ldg,
7972 (unsigned long long) nr64(LDG_NUM(ldn)));
7973 return -EINVAL;
7974 }
7975 } else
7976 nw64(LDG_NUM(ldn), ldg);
7977
7978 return 0;
7979 }
7980
7981 static int niu_set_ldg_timer_res(struct niu *np, int res)
7982 {
7983 if (res < 0 || res > LDG_TIMER_RES_VAL)
7984 return -EINVAL;
7985
7986
7987 nw64(LDG_TIMER_RES, res);
7988
7989 return 0;
7990 }
7991
7992 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7993 {
7994 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7995 (func < 0 || func > 3) ||
7996 (vector < 0 || vector > 0x1f))
7997 return -EINVAL;
7998
7999 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
8000
8001 return 0;
8002 }
8003
8004 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
8005 {
8006 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
8007 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
8008 int limit;
8009
8010 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
8011 return -EINVAL;
8012
8013 frame = frame_base;
8014 nw64(ESPC_PIO_STAT, frame);
8015 limit = 64;
8016 do {
8017 udelay(5);
8018 frame = nr64(ESPC_PIO_STAT);
8019 if (frame & ESPC_PIO_STAT_READ_END)
8020 break;
8021 } while (limit--);
8022 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8023 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8024 (unsigned long long) frame);
8025 return -ENODEV;
8026 }
8027
8028 frame = frame_base;
8029 nw64(ESPC_PIO_STAT, frame);
8030 limit = 64;
8031 do {
8032 udelay(5);
8033 frame = nr64(ESPC_PIO_STAT);
8034 if (frame & ESPC_PIO_STAT_READ_END)
8035 break;
8036 } while (limit--);
8037 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8038 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8039 (unsigned long long) frame);
8040 return -ENODEV;
8041 }
8042
8043 frame = nr64(ESPC_PIO_STAT);
8044 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8045 }
8046
8047 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8048 {
8049 int err = niu_pci_eeprom_read(np, off);
8050 u16 val;
8051
8052 if (err < 0)
8053 return err;
8054 val = (err << 8);
8055 err = niu_pci_eeprom_read(np, off + 1);
8056 if (err < 0)
8057 return err;
8058 val |= (err & 0xff);
8059
8060 return val;
8061 }
8062
8063 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8064 {
8065 int err = niu_pci_eeprom_read(np, off);
8066 u16 val;
8067
8068 if (err < 0)
8069 return err;
8070
8071 val = (err & 0xff);
8072 err = niu_pci_eeprom_read(np, off + 1);
8073 if (err < 0)
8074 return err;
8075
8076 val |= (err & 0xff) << 8;
8077
8078 return val;
8079 }
8080
8081 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8082 u32 off,
8083 char *namebuf,
8084 int namebuf_len)
8085 {
8086 int i;
8087
8088 for (i = 0; i < namebuf_len; i++) {
8089 int err = niu_pci_eeprom_read(np, off + i);
8090 if (err < 0)
8091 return err;
8092 *namebuf++ = err;
8093 if (!err)
8094 break;
8095 }
8096 if (i >= namebuf_len)
8097 return -EINVAL;
8098
8099 return i + 1;
8100 }
8101
8102 static void __devinit niu_vpd_parse_version(struct niu *np)
8103 {
8104 struct niu_vpd *vpd = &np->vpd;
8105 int len = strlen(vpd->version) + 1;
8106 const char *s = vpd->version;
8107 int i;
8108
8109 for (i = 0; i < len - 5; i++) {
8110 if (!strncmp(s + i, "FCode ", 6))
8111 break;
8112 }
8113 if (i >= len - 5)
8114 return;
8115
8116 s += i + 5;
8117 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8118
8119 netif_printk(np, probe, KERN_DEBUG, np->dev,
8120 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8121 vpd->fcode_major, vpd->fcode_minor);
8122 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8123 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8124 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8125 np->flags |= NIU_FLAGS_VPD_VALID;
8126 }
8127
8128 /* ESPC_PIO_EN_ENABLE must be set */
8129 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8130 u32 start, u32 end)
8131 {
8132 unsigned int found_mask = 0;
8133 #define FOUND_MASK_MODEL 0x00000001
8134 #define FOUND_MASK_BMODEL 0x00000002
8135 #define FOUND_MASK_VERS 0x00000004
8136 #define FOUND_MASK_MAC 0x00000008
8137 #define FOUND_MASK_NMAC 0x00000010
8138 #define FOUND_MASK_PHY 0x00000020
8139 #define FOUND_MASK_ALL 0x0000003f
8140
8141 netif_printk(np, probe, KERN_DEBUG, np->dev,
8142 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8143 while (start < end) {
8144 int len, err, instance, type, prop_len;
8145 char namebuf[64];
8146 u8 *prop_buf;
8147 int max_len;
8148
8149 if (found_mask == FOUND_MASK_ALL) {
8150 niu_vpd_parse_version(np);
8151 return 1;
8152 }
8153
8154 err = niu_pci_eeprom_read(np, start + 2);
8155 if (err < 0)
8156 return err;
8157 len = err;
8158 start += 3;
8159
8160 instance = niu_pci_eeprom_read(np, start);
8161 type = niu_pci_eeprom_read(np, start + 3);
8162 prop_len = niu_pci_eeprom_read(np, start + 4);
8163 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8164 if (err < 0)
8165 return err;
8166
8167 prop_buf = NULL;
8168 max_len = 0;
8169 if (!strcmp(namebuf, "model")) {
8170 prop_buf = np->vpd.model;
8171 max_len = NIU_VPD_MODEL_MAX;
8172 found_mask |= FOUND_MASK_MODEL;
8173 } else if (!strcmp(namebuf, "board-model")) {
8174 prop_buf = np->vpd.board_model;
8175 max_len = NIU_VPD_BD_MODEL_MAX;
8176 found_mask |= FOUND_MASK_BMODEL;
8177 } else if (!strcmp(namebuf, "version")) {
8178 prop_buf = np->vpd.version;
8179 max_len = NIU_VPD_VERSION_MAX;
8180 found_mask |= FOUND_MASK_VERS;
8181 } else if (!strcmp(namebuf, "local-mac-address")) {
8182 prop_buf = np->vpd.local_mac;
8183 max_len = ETH_ALEN;
8184 found_mask |= FOUND_MASK_MAC;
8185 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8186 prop_buf = &np->vpd.mac_num;
8187 max_len = 1;
8188 found_mask |= FOUND_MASK_NMAC;
8189 } else if (!strcmp(namebuf, "phy-type")) {
8190 prop_buf = np->vpd.phy_type;
8191 max_len = NIU_VPD_PHY_TYPE_MAX;
8192 found_mask |= FOUND_MASK_PHY;
8193 }
8194
8195 if (max_len && prop_len > max_len) {
8196 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8197 return -EINVAL;
8198 }
8199
8200 if (prop_buf) {
8201 u32 off = start + 5 + err;
8202 int i;
8203
8204 netif_printk(np, probe, KERN_DEBUG, np->dev,
8205 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8206 namebuf, prop_len);
8207 for (i = 0; i < prop_len; i++)
8208 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8209 }
8210
8211 start += len;
8212 }
8213
8214 return 0;
8215 }
8216
8217 /* ESPC_PIO_EN_ENABLE must be set */
8218 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8219 {
8220 u32 offset;
8221 int err;
8222
8223 err = niu_pci_eeprom_read16_swp(np, start + 1);
8224 if (err < 0)
8225 return;
8226
8227 offset = err + 3;
8228
8229 while (start + offset < ESPC_EEPROM_SIZE) {
8230 u32 here = start + offset;
8231 u32 end;
8232
8233 err = niu_pci_eeprom_read(np, here);
8234 if (err != 0x90)
8235 return;
8236
8237 err = niu_pci_eeprom_read16_swp(np, here + 1);
8238 if (err < 0)
8239 return;
8240
8241 here = start + offset + 3;
8242 end = start + offset + err;
8243
8244 offset += err;
8245
8246 err = niu_pci_vpd_scan_props(np, here, end);
8247 if (err < 0 || err == 1)
8248 return;
8249 }
8250 }
8251
8252 /* ESPC_PIO_EN_ENABLE must be set */
8253 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8254 {
8255 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8256 int err;
8257
8258 while (start < end) {
8259 ret = start;
8260
8261 /* ROM header signature? */
8262 err = niu_pci_eeprom_read16(np, start + 0);
8263 if (err != 0x55aa)
8264 return 0;
8265
8266 /* Apply offset to PCI data structure. */
8267 err = niu_pci_eeprom_read16(np, start + 23);
8268 if (err < 0)
8269 return 0;
8270 start += err;
8271
8272 /* Check for "PCIR" signature. */
8273 err = niu_pci_eeprom_read16(np, start + 0);
8274 if (err != 0x5043)
8275 return 0;
8276 err = niu_pci_eeprom_read16(np, start + 2);
8277 if (err != 0x4952)
8278 return 0;
8279
8280 /* Check for OBP image type. */
8281 err = niu_pci_eeprom_read(np, start + 20);
8282 if (err < 0)
8283 return 0;
8284 if (err != 0x01) {
8285 err = niu_pci_eeprom_read(np, ret + 2);
8286 if (err < 0)
8287 return 0;
8288
8289 start = ret + (err * 512);
8290 continue;
8291 }
8292
8293 err = niu_pci_eeprom_read16_swp(np, start + 8);
8294 if (err < 0)
8295 return err;
8296 ret += err;
8297
8298 err = niu_pci_eeprom_read(np, ret + 0);
8299 if (err != 0x82)
8300 return 0;
8301
8302 return ret;
8303 }
8304
8305 return 0;
8306 }
8307
8308 static int __devinit niu_phy_type_prop_decode(struct niu *np,
8309 const char *phy_prop)
8310 {
8311 if (!strcmp(phy_prop, "mif")) {
8312 /* 1G copper, MII */
8313 np->flags &= ~(NIU_FLAGS_FIBER |
8314 NIU_FLAGS_10G);
8315 np->mac_xcvr = MAC_XCVR_MII;
8316 } else if (!strcmp(phy_prop, "xgf")) {
8317 /* 10G fiber, XPCS */
8318 np->flags |= (NIU_FLAGS_10G |
8319 NIU_FLAGS_FIBER);
8320 np->mac_xcvr = MAC_XCVR_XPCS;
8321 } else if (!strcmp(phy_prop, "pcs")) {
8322 /* 1G fiber, PCS */
8323 np->flags &= ~NIU_FLAGS_10G;
8324 np->flags |= NIU_FLAGS_FIBER;
8325 np->mac_xcvr = MAC_XCVR_PCS;
8326 } else if (!strcmp(phy_prop, "xgc")) {
8327 /* 10G copper, XPCS */
8328 np->flags |= NIU_FLAGS_10G;
8329 np->flags &= ~NIU_FLAGS_FIBER;
8330 np->mac_xcvr = MAC_XCVR_XPCS;
8331 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8332 /* 10G Serdes or 1G Serdes, default to 10G */
8333 np->flags |= NIU_FLAGS_10G;
8334 np->flags &= ~NIU_FLAGS_FIBER;
8335 np->flags |= NIU_FLAGS_XCVR_SERDES;
8336 np->mac_xcvr = MAC_XCVR_XPCS;
8337 } else {
8338 return -EINVAL;
8339 }
8340 return 0;
8341 }
8342
8343 static int niu_pci_vpd_get_nports(struct niu *np)
8344 {
8345 int ports = 0;
8346
8347 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8348 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8349 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8350 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8351 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8352 ports = 4;
8353 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8354 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8355 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8356 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8357 ports = 2;
8358 }
8359
8360 return ports;
8361 }
8362
8363 static void __devinit niu_pci_vpd_validate(struct niu *np)
8364 {
8365 struct net_device *dev = np->dev;
8366 struct niu_vpd *vpd = &np->vpd;
8367 u8 val8;
8368
8369 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8370 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8371
8372 np->flags &= ~NIU_FLAGS_VPD_VALID;
8373 return;
8374 }
8375
8376 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8377 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8378 np->flags |= NIU_FLAGS_10G;
8379 np->flags &= ~NIU_FLAGS_FIBER;
8380 np->flags |= NIU_FLAGS_XCVR_SERDES;
8381 np->mac_xcvr = MAC_XCVR_PCS;
8382 if (np->port > 1) {
8383 np->flags |= NIU_FLAGS_FIBER;
8384 np->flags &= ~NIU_FLAGS_10G;
8385 }
8386 if (np->flags & NIU_FLAGS_10G)
8387 np->mac_xcvr = MAC_XCVR_XPCS;
8388 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8389 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8390 NIU_FLAGS_HOTPLUG_PHY);
8391 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8392 dev_err(np->device, "Illegal phy string [%s]\n",
8393 np->vpd.phy_type);
8394 dev_err(np->device, "Falling back to SPROM\n");
8395 np->flags &= ~NIU_FLAGS_VPD_VALID;
8396 return;
8397 }
8398
8399 memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8400
8401 val8 = dev->perm_addr[5];
8402 dev->perm_addr[5] += np->port;
8403 if (dev->perm_addr[5] < val8)
8404 dev->perm_addr[4]++;
8405
8406 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8407 }
8408
8409 static int __devinit niu_pci_probe_sprom(struct niu *np)
8410 {
8411 struct net_device *dev = np->dev;
8412 int len, i;
8413 u64 val, sum;
8414 u8 val8;
8415
8416 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8417 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8418 len = val / 4;
8419
8420 np->eeprom_len = len;
8421
8422 netif_printk(np, probe, KERN_DEBUG, np->dev,
8423 "SPROM: Image size %llu\n", (unsigned long long)val);
8424
8425 sum = 0;
8426 for (i = 0; i < len; i++) {
8427 val = nr64(ESPC_NCR(i));
8428 sum += (val >> 0) & 0xff;
8429 sum += (val >> 8) & 0xff;
8430 sum += (val >> 16) & 0xff;
8431 sum += (val >> 24) & 0xff;
8432 }
8433 netif_printk(np, probe, KERN_DEBUG, np->dev,
8434 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8435 if ((sum & 0xff) != 0xab) {
8436 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8437 return -EINVAL;
8438 }
8439
8440 val = nr64(ESPC_PHY_TYPE);
8441 switch (np->port) {
8442 case 0:
8443 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8444 ESPC_PHY_TYPE_PORT0_SHIFT;
8445 break;
8446 case 1:
8447 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8448 ESPC_PHY_TYPE_PORT1_SHIFT;
8449 break;
8450 case 2:
8451 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8452 ESPC_PHY_TYPE_PORT2_SHIFT;
8453 break;
8454 case 3:
8455 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8456 ESPC_PHY_TYPE_PORT3_SHIFT;
8457 break;
8458 default:
8459 dev_err(np->device, "Bogus port number %u\n",
8460 np->port);
8461 return -EINVAL;
8462 }
8463 netif_printk(np, probe, KERN_DEBUG, np->dev,
8464 "SPROM: PHY type %x\n", val8);
8465
8466 switch (val8) {
8467 case ESPC_PHY_TYPE_1G_COPPER:
8468 /* 1G copper, MII */
8469 np->flags &= ~(NIU_FLAGS_FIBER |
8470 NIU_FLAGS_10G);
8471 np->mac_xcvr = MAC_XCVR_MII;
8472 break;
8473
8474 case ESPC_PHY_TYPE_1G_FIBER:
8475 /* 1G fiber, PCS */
8476 np->flags &= ~NIU_FLAGS_10G;
8477 np->flags |= NIU_FLAGS_FIBER;
8478 np->mac_xcvr = MAC_XCVR_PCS;
8479 break;
8480
8481 case ESPC_PHY_TYPE_10G_COPPER:
8482 /* 10G copper, XPCS */
8483 np->flags |= NIU_FLAGS_10G;
8484 np->flags &= ~NIU_FLAGS_FIBER;
8485 np->mac_xcvr = MAC_XCVR_XPCS;
8486 break;
8487
8488 case ESPC_PHY_TYPE_10G_FIBER:
8489 /* 10G fiber, XPCS */
8490 np->flags |= (NIU_FLAGS_10G |
8491 NIU_FLAGS_FIBER);
8492 np->mac_xcvr = MAC_XCVR_XPCS;
8493 break;
8494
8495 default:
8496 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8497 return -EINVAL;
8498 }
8499
8500 val = nr64(ESPC_MAC_ADDR0);
8501 netif_printk(np, probe, KERN_DEBUG, np->dev,
8502 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8503 dev->perm_addr[0] = (val >> 0) & 0xff;
8504 dev->perm_addr[1] = (val >> 8) & 0xff;
8505 dev->perm_addr[2] = (val >> 16) & 0xff;
8506 dev->perm_addr[3] = (val >> 24) & 0xff;
8507
8508 val = nr64(ESPC_MAC_ADDR1);
8509 netif_printk(np, probe, KERN_DEBUG, np->dev,
8510 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8511 dev->perm_addr[4] = (val >> 0) & 0xff;
8512 dev->perm_addr[5] = (val >> 8) & 0xff;
8513
8514 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8515 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8516 dev->perm_addr);
8517 return -EINVAL;
8518 }
8519
8520 val8 = dev->perm_addr[5];
8521 dev->perm_addr[5] += np->port;
8522 if (dev->perm_addr[5] < val8)
8523 dev->perm_addr[4]++;
8524
8525 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8526
8527 val = nr64(ESPC_MOD_STR_LEN);
8528 netif_printk(np, probe, KERN_DEBUG, np->dev,
8529 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8530 if (val >= 8 * 4)
8531 return -EINVAL;
8532
8533 for (i = 0; i < val; i += 4) {
8534 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8535
8536 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8537 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8538 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8539 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8540 }
8541 np->vpd.model[val] = '\0';
8542
8543 val = nr64(ESPC_BD_MOD_STR_LEN);
8544 netif_printk(np, probe, KERN_DEBUG, np->dev,
8545 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8546 if (val >= 4 * 4)
8547 return -EINVAL;
8548
8549 for (i = 0; i < val; i += 4) {
8550 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8551
8552 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8553 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8554 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8555 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8556 }
8557 np->vpd.board_model[val] = '\0';
8558
8559 np->vpd.mac_num =
8560 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8561 netif_printk(np, probe, KERN_DEBUG, np->dev,
8562 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8563
8564 return 0;
8565 }
8566
8567 static int __devinit niu_get_and_validate_port(struct niu *np)
8568 {
8569 struct niu_parent *parent = np->parent;
8570
8571 if (np->port <= 1)
8572 np->flags |= NIU_FLAGS_XMAC;
8573
8574 if (!parent->num_ports) {
8575 if (parent->plat_type == PLAT_TYPE_NIU) {
8576 parent->num_ports = 2;
8577 } else {
8578 parent->num_ports = niu_pci_vpd_get_nports(np);
8579 if (!parent->num_ports) {
8580 /* Fall back to SPROM as last resort.
8581 * This will fail on most cards.
8582 */
8583 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8584 ESPC_NUM_PORTS_MACS_VAL;
8585
8586 /* All of the current probing methods fail on
8587 * Maramba on-board parts.
8588 */
8589 if (!parent->num_ports)
8590 parent->num_ports = 4;
8591 }
8592 }
8593 }
8594
8595 if (np->port >= parent->num_ports)
8596 return -ENODEV;
8597
8598 return 0;
8599 }
8600
8601 static int __devinit phy_record(struct niu_parent *parent,
8602 struct phy_probe_info *p,
8603 int dev_id_1, int dev_id_2, u8 phy_port,
8604 int type)
8605 {
8606 u32 id = (dev_id_1 << 16) | dev_id_2;
8607 u8 idx;
8608
8609 if (dev_id_1 < 0 || dev_id_2 < 0)
8610 return 0;
8611 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8612 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8613 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
8614 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
8615 return 0;
8616 } else {
8617 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8618 return 0;
8619 }
8620
8621 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8622 parent->index, id,
8623 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8624 type == PHY_TYPE_PCS ? "PCS" : "MII",
8625 phy_port);
8626
8627 if (p->cur[type] >= NIU_MAX_PORTS) {
8628 pr_err("Too many PHY ports\n");
8629 return -EINVAL;
8630 }
8631 idx = p->cur[type];
8632 p->phy_id[type][idx] = id;
8633 p->phy_port[type][idx] = phy_port;
8634 p->cur[type] = idx + 1;
8635 return 0;
8636 }
8637
8638 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8639 {
8640 int i;
8641
8642 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8643 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8644 return 1;
8645 }
8646 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8647 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8648 return 1;
8649 }
8650
8651 return 0;
8652 }
8653
8654 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8655 {
8656 int port, cnt;
8657
8658 cnt = 0;
8659 *lowest = 32;
8660 for (port = 8; port < 32; port++) {
8661 if (port_has_10g(p, port)) {
8662 if (!cnt)
8663 *lowest = port;
8664 cnt++;
8665 }
8666 }
8667
8668 return cnt;
8669 }
8670
8671 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8672 {
8673 *lowest = 32;
8674 if (p->cur[PHY_TYPE_MII])
8675 *lowest = p->phy_port[PHY_TYPE_MII][0];
8676
8677 return p->cur[PHY_TYPE_MII];
8678 }
8679
8680 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8681 {
8682 int num_ports = parent->num_ports;
8683 int i;
8684
8685 for (i = 0; i < num_ports; i++) {
8686 parent->rxchan_per_port[i] = (16 / num_ports);
8687 parent->txchan_per_port[i] = (16 / num_ports);
8688
8689 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8690 parent->index, i,
8691 parent->rxchan_per_port[i],
8692 parent->txchan_per_port[i]);
8693 }
8694 }
8695
8696 static void __devinit niu_divide_channels(struct niu_parent *parent,
8697 int num_10g, int num_1g)
8698 {
8699 int num_ports = parent->num_ports;
8700 int rx_chans_per_10g, rx_chans_per_1g;
8701 int tx_chans_per_10g, tx_chans_per_1g;
8702 int i, tot_rx, tot_tx;
8703
8704 if (!num_10g || !num_1g) {
8705 rx_chans_per_10g = rx_chans_per_1g =
8706 (NIU_NUM_RXCHAN / num_ports);
8707 tx_chans_per_10g = tx_chans_per_1g =
8708 (NIU_NUM_TXCHAN / num_ports);
8709 } else {
8710 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8711 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8712 (rx_chans_per_1g * num_1g)) /
8713 num_10g;
8714
8715 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8716 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8717 (tx_chans_per_1g * num_1g)) /
8718 num_10g;
8719 }
8720
8721 tot_rx = tot_tx = 0;
8722 for (i = 0; i < num_ports; i++) {
8723 int type = phy_decode(parent->port_phy, i);
8724
8725 if (type == PORT_TYPE_10G) {
8726 parent->rxchan_per_port[i] = rx_chans_per_10g;
8727 parent->txchan_per_port[i] = tx_chans_per_10g;
8728 } else {
8729 parent->rxchan_per_port[i] = rx_chans_per_1g;
8730 parent->txchan_per_port[i] = tx_chans_per_1g;
8731 }
8732 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8733 parent->index, i,
8734 parent->rxchan_per_port[i],
8735 parent->txchan_per_port[i]);
8736 tot_rx += parent->rxchan_per_port[i];
8737 tot_tx += parent->txchan_per_port[i];
8738 }
8739
8740 if (tot_rx > NIU_NUM_RXCHAN) {
8741 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8742 parent->index, tot_rx);
8743 for (i = 0; i < num_ports; i++)
8744 parent->rxchan_per_port[i] = 1;
8745 }
8746 if (tot_tx > NIU_NUM_TXCHAN) {
8747 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8748 parent->index, tot_tx);
8749 for (i = 0; i < num_ports; i++)
8750 parent->txchan_per_port[i] = 1;
8751 }
8752 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8753 pr_warning("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8754 parent->index, tot_rx, tot_tx);
8755 }
8756 }
8757
8758 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8759 int num_10g, int num_1g)
8760 {
8761 int i, num_ports = parent->num_ports;
8762 int rdc_group, rdc_groups_per_port;
8763 int rdc_channel_base;
8764
8765 rdc_group = 0;
8766 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8767
8768 rdc_channel_base = 0;
8769
8770 for (i = 0; i < num_ports; i++) {
8771 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8772 int grp, num_channels = parent->rxchan_per_port[i];
8773 int this_channel_offset;
8774
8775 tp->first_table_num = rdc_group;
8776 tp->num_tables = rdc_groups_per_port;
8777 this_channel_offset = 0;
8778 for (grp = 0; grp < tp->num_tables; grp++) {
8779 struct rdc_table *rt = &tp->tables[grp];
8780 int slot;
8781
8782 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8783 parent->index, i, tp->first_table_num + grp);
8784 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8785 rt->rxdma_channel[slot] =
8786 rdc_channel_base + this_channel_offset;
8787
8788 pr_cont("%d ", rt->rxdma_channel[slot]);
8789
8790 if (++this_channel_offset == num_channels)
8791 this_channel_offset = 0;
8792 }
8793 pr_cont("]\n");
8794 }
8795
8796 parent->rdc_default[i] = rdc_channel_base;
8797
8798 rdc_channel_base += num_channels;
8799 rdc_group += rdc_groups_per_port;
8800 }
8801 }
8802
8803 static int __devinit fill_phy_probe_info(struct niu *np,
8804 struct niu_parent *parent,
8805 struct phy_probe_info *info)
8806 {
8807 unsigned long flags;
8808 int port, err;
8809
8810 memset(info, 0, sizeof(*info));
8811
8812 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8813 niu_lock_parent(np, flags);
8814 err = 0;
8815 for (port = 8; port < 32; port++) {
8816 int dev_id_1, dev_id_2;
8817
8818 dev_id_1 = mdio_read(np, port,
8819 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8820 dev_id_2 = mdio_read(np, port,
8821 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8822 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8823 PHY_TYPE_PMA_PMD);
8824 if (err)
8825 break;
8826 dev_id_1 = mdio_read(np, port,
8827 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8828 dev_id_2 = mdio_read(np, port,
8829 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8830 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8831 PHY_TYPE_PCS);
8832 if (err)
8833 break;
8834 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8835 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8836 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8837 PHY_TYPE_MII);
8838 if (err)
8839 break;
8840 }
8841 niu_unlock_parent(np, flags);
8842
8843 return err;
8844 }
8845
8846 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8847 {
8848 struct phy_probe_info *info = &parent->phy_probe_info;
8849 int lowest_10g, lowest_1g;
8850 int num_10g, num_1g;
8851 u32 val;
8852 int err;
8853
8854 num_10g = num_1g = 0;
8855
8856 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8857 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8858 num_10g = 0;
8859 num_1g = 2;
8860 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8861 parent->num_ports = 4;
8862 val = (phy_encode(PORT_TYPE_1G, 0) |
8863 phy_encode(PORT_TYPE_1G, 1) |
8864 phy_encode(PORT_TYPE_1G, 2) |
8865 phy_encode(PORT_TYPE_1G, 3));
8866 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8867 num_10g = 2;
8868 num_1g = 0;
8869 parent->num_ports = 2;
8870 val = (phy_encode(PORT_TYPE_10G, 0) |
8871 phy_encode(PORT_TYPE_10G, 1));
8872 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8873 (parent->plat_type == PLAT_TYPE_NIU)) {
8874 /* this is the Monza case */
8875 if (np->flags & NIU_FLAGS_10G) {
8876 val = (phy_encode(PORT_TYPE_10G, 0) |
8877 phy_encode(PORT_TYPE_10G, 1));
8878 } else {
8879 val = (phy_encode(PORT_TYPE_1G, 0) |
8880 phy_encode(PORT_TYPE_1G, 1));
8881 }
8882 } else {
8883 err = fill_phy_probe_info(np, parent, info);
8884 if (err)
8885 return err;
8886
8887 num_10g = count_10g_ports(info, &lowest_10g);
8888 num_1g = count_1g_ports(info, &lowest_1g);
8889
8890 switch ((num_10g << 4) | num_1g) {
8891 case 0x24:
8892 if (lowest_1g == 10)
8893 parent->plat_type = PLAT_TYPE_VF_P0;
8894 else if (lowest_1g == 26)
8895 parent->plat_type = PLAT_TYPE_VF_P1;
8896 else
8897 goto unknown_vg_1g_port;
8898
8899 /* fallthru */
8900 case 0x22:
8901 val = (phy_encode(PORT_TYPE_10G, 0) |
8902 phy_encode(PORT_TYPE_10G, 1) |
8903 phy_encode(PORT_TYPE_1G, 2) |
8904 phy_encode(PORT_TYPE_1G, 3));
8905 break;
8906
8907 case 0x20:
8908 val = (phy_encode(PORT_TYPE_10G, 0) |
8909 phy_encode(PORT_TYPE_10G, 1));
8910 break;
8911
8912 case 0x10:
8913 val = phy_encode(PORT_TYPE_10G, np->port);
8914 break;
8915
8916 case 0x14:
8917 if (lowest_1g == 10)
8918 parent->plat_type = PLAT_TYPE_VF_P0;
8919 else if (lowest_1g == 26)
8920 parent->plat_type = PLAT_TYPE_VF_P1;
8921 else
8922 goto unknown_vg_1g_port;
8923
8924 /* fallthru */
8925 case 0x13:
8926 if ((lowest_10g & 0x7) == 0)
8927 val = (phy_encode(PORT_TYPE_10G, 0) |
8928 phy_encode(PORT_TYPE_1G, 1) |
8929 phy_encode(PORT_TYPE_1G, 2) |
8930 phy_encode(PORT_TYPE_1G, 3));
8931 else
8932 val = (phy_encode(PORT_TYPE_1G, 0) |
8933 phy_encode(PORT_TYPE_10G, 1) |
8934 phy_encode(PORT_TYPE_1G, 2) |
8935 phy_encode(PORT_TYPE_1G, 3));
8936 break;
8937
8938 case 0x04:
8939 if (lowest_1g == 10)
8940 parent->plat_type = PLAT_TYPE_VF_P0;
8941 else if (lowest_1g == 26)
8942 parent->plat_type = PLAT_TYPE_VF_P1;
8943 else
8944 goto unknown_vg_1g_port;
8945
8946 val = (phy_encode(PORT_TYPE_1G, 0) |
8947 phy_encode(PORT_TYPE_1G, 1) |
8948 phy_encode(PORT_TYPE_1G, 2) |
8949 phy_encode(PORT_TYPE_1G, 3));
8950 break;
8951
8952 default:
8953 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8954 num_10g, num_1g);
8955 return -EINVAL;
8956 }
8957 }
8958
8959 parent->port_phy = val;
8960
8961 if (parent->plat_type == PLAT_TYPE_NIU)
8962 niu_n2_divide_channels(parent);
8963 else
8964 niu_divide_channels(parent, num_10g, num_1g);
8965
8966 niu_divide_rdc_groups(parent, num_10g, num_1g);
8967
8968 return 0;
8969
8970 unknown_vg_1g_port:
8971 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8972 return -EINVAL;
8973 }
8974
8975 static int __devinit niu_probe_ports(struct niu *np)
8976 {
8977 struct niu_parent *parent = np->parent;
8978 int err, i;
8979
8980 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8981 err = walk_phys(np, parent);
8982 if (err)
8983 return err;
8984
8985 niu_set_ldg_timer_res(np, 2);
8986 for (i = 0; i <= LDN_MAX; i++)
8987 niu_ldn_irq_enable(np, i, 0);
8988 }
8989
8990 if (parent->port_phy == PORT_PHY_INVALID)
8991 return -EINVAL;
8992
8993 return 0;
8994 }
8995
8996 static int __devinit niu_classifier_swstate_init(struct niu *np)
8997 {
8998 struct niu_classifier *cp = &np->clas;
8999
9000 cp->tcam_top = (u16) np->port;
9001 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
9002 cp->h1_init = 0xffffffff;
9003 cp->h2_init = 0xffff;
9004
9005 return fflp_early_init(np);
9006 }
9007
9008 static void __devinit niu_link_config_init(struct niu *np)
9009 {
9010 struct niu_link_config *lp = &np->link_config;
9011
9012 lp->advertising = (ADVERTISED_10baseT_Half |
9013 ADVERTISED_10baseT_Full |
9014 ADVERTISED_100baseT_Half |
9015 ADVERTISED_100baseT_Full |
9016 ADVERTISED_1000baseT_Half |
9017 ADVERTISED_1000baseT_Full |
9018 ADVERTISED_10000baseT_Full |
9019 ADVERTISED_Autoneg);
9020 lp->speed = lp->active_speed = SPEED_INVALID;
9021 lp->duplex = DUPLEX_FULL;
9022 lp->active_duplex = DUPLEX_INVALID;
9023 lp->autoneg = 1;
9024 #if 0
9025 lp->loopback_mode = LOOPBACK_MAC;
9026 lp->active_speed = SPEED_10000;
9027 lp->active_duplex = DUPLEX_FULL;
9028 #else
9029 lp->loopback_mode = LOOPBACK_DISABLED;
9030 #endif
9031 }
9032
9033 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
9034 {
9035 switch (np->port) {
9036 case 0:
9037 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9038 np->ipp_off = 0x00000;
9039 np->pcs_off = 0x04000;
9040 np->xpcs_off = 0x02000;
9041 break;
9042
9043 case 1:
9044 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9045 np->ipp_off = 0x08000;
9046 np->pcs_off = 0x0a000;
9047 np->xpcs_off = 0x08000;
9048 break;
9049
9050 case 2:
9051 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9052 np->ipp_off = 0x04000;
9053 np->pcs_off = 0x0e000;
9054 np->xpcs_off = ~0UL;
9055 break;
9056
9057 case 3:
9058 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9059 np->ipp_off = 0x0c000;
9060 np->pcs_off = 0x12000;
9061 np->xpcs_off = ~0UL;
9062 break;
9063
9064 default:
9065 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9066 return -EINVAL;
9067 }
9068
9069 return 0;
9070 }
9071
9072 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9073 {
9074 struct msix_entry msi_vec[NIU_NUM_LDG];
9075 struct niu_parent *parent = np->parent;
9076 struct pci_dev *pdev = np->pdev;
9077 int i, num_irqs, err;
9078 u8 first_ldg;
9079
9080 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9081 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9082 ldg_num_map[i] = first_ldg + i;
9083
9084 num_irqs = (parent->rxchan_per_port[np->port] +
9085 parent->txchan_per_port[np->port] +
9086 (np->port == 0 ? 3 : 1));
9087 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9088
9089 retry:
9090 for (i = 0; i < num_irqs; i++) {
9091 msi_vec[i].vector = 0;
9092 msi_vec[i].entry = i;
9093 }
9094
9095 err = pci_enable_msix(pdev, msi_vec, num_irqs);
9096 if (err < 0) {
9097 np->flags &= ~NIU_FLAGS_MSIX;
9098 return;
9099 }
9100 if (err > 0) {
9101 num_irqs = err;
9102 goto retry;
9103 }
9104
9105 np->flags |= NIU_FLAGS_MSIX;
9106 for (i = 0; i < num_irqs; i++)
9107 np->ldg[i].irq = msi_vec[i].vector;
9108 np->num_ldg = num_irqs;
9109 }
9110
9111 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9112 {
9113 #ifdef CONFIG_SPARC64
9114 struct of_device *op = np->op;
9115 const u32 *int_prop;
9116 int i;
9117
9118 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9119 if (!int_prop)
9120 return -ENODEV;
9121
9122 for (i = 0; i < op->num_irqs; i++) {
9123 ldg_num_map[i] = int_prop[i];
9124 np->ldg[i].irq = op->irqs[i];
9125 }
9126
9127 np->num_ldg = op->num_irqs;
9128
9129 return 0;
9130 #else
9131 return -EINVAL;
9132 #endif
9133 }
9134
9135 static int __devinit niu_ldg_init(struct niu *np)
9136 {
9137 struct niu_parent *parent = np->parent;
9138 u8 ldg_num_map[NIU_NUM_LDG];
9139 int first_chan, num_chan;
9140 int i, err, ldg_rotor;
9141 u8 port;
9142
9143 np->num_ldg = 1;
9144 np->ldg[0].irq = np->dev->irq;
9145 if (parent->plat_type == PLAT_TYPE_NIU) {
9146 err = niu_n2_irq_init(np, ldg_num_map);
9147 if (err)
9148 return err;
9149 } else
9150 niu_try_msix(np, ldg_num_map);
9151
9152 port = np->port;
9153 for (i = 0; i < np->num_ldg; i++) {
9154 struct niu_ldg *lp = &np->ldg[i];
9155
9156 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9157
9158 lp->np = np;
9159 lp->ldg_num = ldg_num_map[i];
9160 lp->timer = 2; /* XXX */
9161
9162 /* On N2 NIU the firmware has setup the SID mappings so they go
9163 * to the correct values that will route the LDG to the proper
9164 * interrupt in the NCU interrupt table.
9165 */
9166 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9167 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9168 if (err)
9169 return err;
9170 }
9171 }
9172
9173 /* We adopt the LDG assignment ordering used by the N2 NIU
9174 * 'interrupt' properties because that simplifies a lot of
9175 * things. This ordering is:
9176 *
9177 * MAC
9178 * MIF (if port zero)
9179 * SYSERR (if port zero)
9180 * RX channels
9181 * TX channels
9182 */
9183
9184 ldg_rotor = 0;
9185
9186 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9187 LDN_MAC(port));
9188 if (err)
9189 return err;
9190
9191 ldg_rotor++;
9192 if (ldg_rotor == np->num_ldg)
9193 ldg_rotor = 0;
9194
9195 if (port == 0) {
9196 err = niu_ldg_assign_ldn(np, parent,
9197 ldg_num_map[ldg_rotor],
9198 LDN_MIF);
9199 if (err)
9200 return err;
9201
9202 ldg_rotor++;
9203 if (ldg_rotor == np->num_ldg)
9204 ldg_rotor = 0;
9205
9206 err = niu_ldg_assign_ldn(np, parent,
9207 ldg_num_map[ldg_rotor],
9208 LDN_DEVICE_ERROR);
9209 if (err)
9210 return err;
9211
9212 ldg_rotor++;
9213 if (ldg_rotor == np->num_ldg)
9214 ldg_rotor = 0;
9215
9216 }
9217
9218 first_chan = 0;
9219 for (i = 0; i < port; i++)
9220 first_chan += parent->rxchan_per_port[port];
9221 num_chan = parent->rxchan_per_port[port];
9222
9223 for (i = first_chan; i < (first_chan + num_chan); i++) {
9224 err = niu_ldg_assign_ldn(np, parent,
9225 ldg_num_map[ldg_rotor],
9226 LDN_RXDMA(i));
9227 if (err)
9228 return err;
9229 ldg_rotor++;
9230 if (ldg_rotor == np->num_ldg)
9231 ldg_rotor = 0;
9232 }
9233
9234 first_chan = 0;
9235 for (i = 0; i < port; i++)
9236 first_chan += parent->txchan_per_port[port];
9237 num_chan = parent->txchan_per_port[port];
9238 for (i = first_chan; i < (first_chan + num_chan); i++) {
9239 err = niu_ldg_assign_ldn(np, parent,
9240 ldg_num_map[ldg_rotor],
9241 LDN_TXDMA(i));
9242 if (err)
9243 return err;
9244 ldg_rotor++;
9245 if (ldg_rotor == np->num_ldg)
9246 ldg_rotor = 0;
9247 }
9248
9249 return 0;
9250 }
9251
9252 static void __devexit niu_ldg_free(struct niu *np)
9253 {
9254 if (np->flags & NIU_FLAGS_MSIX)
9255 pci_disable_msix(np->pdev);
9256 }
9257
9258 static int __devinit niu_get_of_props(struct niu *np)
9259 {
9260 #ifdef CONFIG_SPARC64
9261 struct net_device *dev = np->dev;
9262 struct device_node *dp;
9263 const char *phy_type;
9264 const u8 *mac_addr;
9265 const char *model;
9266 int prop_len;
9267
9268 if (np->parent->plat_type == PLAT_TYPE_NIU)
9269 dp = np->op->dev.of_node;
9270 else
9271 dp = pci_device_to_OF_node(np->pdev);
9272
9273 phy_type = of_get_property(dp, "phy-type", &prop_len);
9274 if (!phy_type) {
9275 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9276 dp->full_name);
9277 return -EINVAL;
9278 }
9279
9280 if (!strcmp(phy_type, "none"))
9281 return -ENODEV;
9282
9283 strcpy(np->vpd.phy_type, phy_type);
9284
9285 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9286 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9287 dp->full_name, np->vpd.phy_type);
9288 return -EINVAL;
9289 }
9290
9291 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9292 if (!mac_addr) {
9293 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9294 dp->full_name);
9295 return -EINVAL;
9296 }
9297 if (prop_len != dev->addr_len) {
9298 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9299 dp->full_name, prop_len);
9300 }
9301 memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9302 if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9303 netdev_err(dev, "%s: OF MAC address is invalid\n",
9304 dp->full_name);
9305 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->perm_addr);
9306 return -EINVAL;
9307 }
9308
9309 memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9310
9311 model = of_get_property(dp, "model", &prop_len);
9312
9313 if (model)
9314 strcpy(np->vpd.model, model);
9315
9316 if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9317 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9318 NIU_FLAGS_HOTPLUG_PHY);
9319 }
9320
9321 return 0;
9322 #else
9323 return -EINVAL;
9324 #endif
9325 }
9326
9327 static int __devinit niu_get_invariants(struct niu *np)
9328 {
9329 int err, have_props;
9330 u32 offset;
9331
9332 err = niu_get_of_props(np);
9333 if (err == -ENODEV)
9334 return err;
9335
9336 have_props = !err;
9337
9338 err = niu_init_mac_ipp_pcs_base(np);
9339 if (err)
9340 return err;
9341
9342 if (have_props) {
9343 err = niu_get_and_validate_port(np);
9344 if (err)
9345 return err;
9346
9347 } else {
9348 if (np->parent->plat_type == PLAT_TYPE_NIU)
9349 return -EINVAL;
9350
9351 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9352 offset = niu_pci_vpd_offset(np);
9353 netif_printk(np, probe, KERN_DEBUG, np->dev,
9354 "%s() VPD offset [%08x]\n", __func__, offset);
9355 if (offset)
9356 niu_pci_vpd_fetch(np, offset);
9357 nw64(ESPC_PIO_EN, 0);
9358
9359 if (np->flags & NIU_FLAGS_VPD_VALID) {
9360 niu_pci_vpd_validate(np);
9361 err = niu_get_and_validate_port(np);
9362 if (err)
9363 return err;
9364 }
9365
9366 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9367 err = niu_get_and_validate_port(np);
9368 if (err)
9369 return err;
9370 err = niu_pci_probe_sprom(np);
9371 if (err)
9372 return err;
9373 }
9374 }
9375
9376 err = niu_probe_ports(np);
9377 if (err)
9378 return err;
9379
9380 niu_ldg_init(np);
9381
9382 niu_classifier_swstate_init(np);
9383 niu_link_config_init(np);
9384
9385 err = niu_determine_phy_disposition(np);
9386 if (!err)
9387 err = niu_init_link(np);
9388
9389 return err;
9390 }
9391
9392 static LIST_HEAD(niu_parent_list);
9393 static DEFINE_MUTEX(niu_parent_lock);
9394 static int niu_parent_index;
9395
9396 static ssize_t show_port_phy(struct device *dev,
9397 struct device_attribute *attr, char *buf)
9398 {
9399 struct platform_device *plat_dev = to_platform_device(dev);
9400 struct niu_parent *p = plat_dev->dev.platform_data;
9401 u32 port_phy = p->port_phy;
9402 char *orig_buf = buf;
9403 int i;
9404
9405 if (port_phy == PORT_PHY_UNKNOWN ||
9406 port_phy == PORT_PHY_INVALID)
9407 return 0;
9408
9409 for (i = 0; i < p->num_ports; i++) {
9410 const char *type_str;
9411 int type;
9412
9413 type = phy_decode(port_phy, i);
9414 if (type == PORT_TYPE_10G)
9415 type_str = "10G";
9416 else
9417 type_str = "1G";
9418 buf += sprintf(buf,
9419 (i == 0) ? "%s" : " %s",
9420 type_str);
9421 }
9422 buf += sprintf(buf, "\n");
9423 return buf - orig_buf;
9424 }
9425
9426 static ssize_t show_plat_type(struct device *dev,
9427 struct device_attribute *attr, char *buf)
9428 {
9429 struct platform_device *plat_dev = to_platform_device(dev);
9430 struct niu_parent *p = plat_dev->dev.platform_data;
9431 const char *type_str;
9432
9433 switch (p->plat_type) {
9434 case PLAT_TYPE_ATLAS:
9435 type_str = "atlas";
9436 break;
9437 case PLAT_TYPE_NIU:
9438 type_str = "niu";
9439 break;
9440 case PLAT_TYPE_VF_P0:
9441 type_str = "vf_p0";
9442 break;
9443 case PLAT_TYPE_VF_P1:
9444 type_str = "vf_p1";
9445 break;
9446 default:
9447 type_str = "unknown";
9448 break;
9449 }
9450
9451 return sprintf(buf, "%s\n", type_str);
9452 }
9453
9454 static ssize_t __show_chan_per_port(struct device *dev,
9455 struct device_attribute *attr, char *buf,
9456 int rx)
9457 {
9458 struct platform_device *plat_dev = to_platform_device(dev);
9459 struct niu_parent *p = plat_dev->dev.platform_data;
9460 char *orig_buf = buf;
9461 u8 *arr;
9462 int i;
9463
9464 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9465
9466 for (i = 0; i < p->num_ports; i++) {
9467 buf += sprintf(buf,
9468 (i == 0) ? "%d" : " %d",
9469 arr[i]);
9470 }
9471 buf += sprintf(buf, "\n");
9472
9473 return buf - orig_buf;
9474 }
9475
9476 static ssize_t show_rxchan_per_port(struct device *dev,
9477 struct device_attribute *attr, char *buf)
9478 {
9479 return __show_chan_per_port(dev, attr, buf, 1);
9480 }
9481
9482 static ssize_t show_txchan_per_port(struct device *dev,
9483 struct device_attribute *attr, char *buf)
9484 {
9485 return __show_chan_per_port(dev, attr, buf, 1);
9486 }
9487
9488 static ssize_t show_num_ports(struct device *dev,
9489 struct device_attribute *attr, char *buf)
9490 {
9491 struct platform_device *plat_dev = to_platform_device(dev);
9492 struct niu_parent *p = plat_dev->dev.platform_data;
9493
9494 return sprintf(buf, "%d\n", p->num_ports);
9495 }
9496
9497 static struct device_attribute niu_parent_attributes[] = {
9498 __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9499 __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9500 __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9501 __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9502 __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9503 {}
9504 };
9505
9506 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9507 union niu_parent_id *id,
9508 u8 ptype)
9509 {
9510 struct platform_device *plat_dev;
9511 struct niu_parent *p;
9512 int i;
9513
9514 plat_dev = platform_device_register_simple("niu", niu_parent_index,
9515 NULL, 0);
9516 if (IS_ERR(plat_dev))
9517 return NULL;
9518
9519 for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9520 int err = device_create_file(&plat_dev->dev,
9521 &niu_parent_attributes[i]);
9522 if (err)
9523 goto fail_unregister;
9524 }
9525
9526 p = kzalloc(sizeof(*p), GFP_KERNEL);
9527 if (!p)
9528 goto fail_unregister;
9529
9530 p->index = niu_parent_index++;
9531
9532 plat_dev->dev.platform_data = p;
9533 p->plat_dev = plat_dev;
9534
9535 memcpy(&p->id, id, sizeof(*id));
9536 p->plat_type = ptype;
9537 INIT_LIST_HEAD(&p->list);
9538 atomic_set(&p->refcnt, 0);
9539 list_add(&p->list, &niu_parent_list);
9540 spin_lock_init(&p->lock);
9541
9542 p->rxdma_clock_divider = 7500;
9543
9544 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9545 if (p->plat_type == PLAT_TYPE_NIU)
9546 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9547
9548 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9549 int index = i - CLASS_CODE_USER_PROG1;
9550
9551 p->tcam_key[index] = TCAM_KEY_TSEL;
9552 p->flow_key[index] = (FLOW_KEY_IPSA |
9553 FLOW_KEY_IPDA |
9554 FLOW_KEY_PROTO |
9555 (FLOW_KEY_L4_BYTE12 <<
9556 FLOW_KEY_L4_0_SHIFT) |
9557 (FLOW_KEY_L4_BYTE12 <<
9558 FLOW_KEY_L4_1_SHIFT));
9559 }
9560
9561 for (i = 0; i < LDN_MAX + 1; i++)
9562 p->ldg_map[i] = LDG_INVALID;
9563
9564 return p;
9565
9566 fail_unregister:
9567 platform_device_unregister(plat_dev);
9568 return NULL;
9569 }
9570
9571 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9572 union niu_parent_id *id,
9573 u8 ptype)
9574 {
9575 struct niu_parent *p, *tmp;
9576 int port = np->port;
9577
9578 mutex_lock(&niu_parent_lock);
9579 p = NULL;
9580 list_for_each_entry(tmp, &niu_parent_list, list) {
9581 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9582 p = tmp;
9583 break;
9584 }
9585 }
9586 if (!p)
9587 p = niu_new_parent(np, id, ptype);
9588
9589 if (p) {
9590 char port_name[6];
9591 int err;
9592
9593 sprintf(port_name, "port%d", port);
9594 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9595 &np->device->kobj,
9596 port_name);
9597 if (!err) {
9598 p->ports[port] = np;
9599 atomic_inc(&p->refcnt);
9600 }
9601 }
9602 mutex_unlock(&niu_parent_lock);
9603
9604 return p;
9605 }
9606
9607 static void niu_put_parent(struct niu *np)
9608 {
9609 struct niu_parent *p = np->parent;
9610 u8 port = np->port;
9611 char port_name[6];
9612
9613 BUG_ON(!p || p->ports[port] != np);
9614
9615 netif_printk(np, probe, KERN_DEBUG, np->dev,
9616 "%s() port[%u]\n", __func__, port);
9617
9618 sprintf(port_name, "port%d", port);
9619
9620 mutex_lock(&niu_parent_lock);
9621
9622 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9623
9624 p->ports[port] = NULL;
9625 np->parent = NULL;
9626
9627 if (atomic_dec_and_test(&p->refcnt)) {
9628 list_del(&p->list);
9629 platform_device_unregister(p->plat_dev);
9630 }
9631
9632 mutex_unlock(&niu_parent_lock);
9633 }
9634
9635 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9636 u64 *handle, gfp_t flag)
9637 {
9638 dma_addr_t dh;
9639 void *ret;
9640
9641 ret = dma_alloc_coherent(dev, size, &dh, flag);
9642 if (ret)
9643 *handle = dh;
9644 return ret;
9645 }
9646
9647 static void niu_pci_free_coherent(struct device *dev, size_t size,
9648 void *cpu_addr, u64 handle)
9649 {
9650 dma_free_coherent(dev, size, cpu_addr, handle);
9651 }
9652
9653 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9654 unsigned long offset, size_t size,
9655 enum dma_data_direction direction)
9656 {
9657 return dma_map_page(dev, page, offset, size, direction);
9658 }
9659
9660 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9661 size_t size, enum dma_data_direction direction)
9662 {
9663 dma_unmap_page(dev, dma_address, size, direction);
9664 }
9665
9666 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9667 size_t size,
9668 enum dma_data_direction direction)
9669 {
9670 return dma_map_single(dev, cpu_addr, size, direction);
9671 }
9672
9673 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9674 size_t size,
9675 enum dma_data_direction direction)
9676 {
9677 dma_unmap_single(dev, dma_address, size, direction);
9678 }
9679
9680 static const struct niu_ops niu_pci_ops = {
9681 .alloc_coherent = niu_pci_alloc_coherent,
9682 .free_coherent = niu_pci_free_coherent,
9683 .map_page = niu_pci_map_page,
9684 .unmap_page = niu_pci_unmap_page,
9685 .map_single = niu_pci_map_single,
9686 .unmap_single = niu_pci_unmap_single,
9687 };
9688
9689 static void __devinit niu_driver_version(void)
9690 {
9691 static int niu_version_printed;
9692
9693 if (niu_version_printed++ == 0)
9694 pr_info("%s", version);
9695 }
9696
9697 static struct net_device * __devinit niu_alloc_and_init(
9698 struct device *gen_dev, struct pci_dev *pdev,
9699 struct of_device *op, const struct niu_ops *ops,
9700 u8 port)
9701 {
9702 struct net_device *dev;
9703 struct niu *np;
9704
9705 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9706 if (!dev) {
9707 dev_err(gen_dev, "Etherdev alloc failed, aborting\n");
9708 return NULL;
9709 }
9710
9711 SET_NETDEV_DEV(dev, gen_dev);
9712
9713 np = netdev_priv(dev);
9714 np->dev = dev;
9715 np->pdev = pdev;
9716 np->op = op;
9717 np->device = gen_dev;
9718 np->ops = ops;
9719
9720 np->msg_enable = niu_debug;
9721
9722 spin_lock_init(&np->lock);
9723 INIT_WORK(&np->reset_task, niu_reset_task);
9724
9725 np->port = port;
9726
9727 return dev;
9728 }
9729
9730 static const struct net_device_ops niu_netdev_ops = {
9731 .ndo_open = niu_open,
9732 .ndo_stop = niu_close,
9733 .ndo_start_xmit = niu_start_xmit,
9734 .ndo_get_stats = niu_get_stats,
9735 .ndo_set_multicast_list = niu_set_rx_mode,
9736 .ndo_validate_addr = eth_validate_addr,
9737 .ndo_set_mac_address = niu_set_mac_addr,
9738 .ndo_do_ioctl = niu_ioctl,
9739 .ndo_tx_timeout = niu_tx_timeout,
9740 .ndo_change_mtu = niu_change_mtu,
9741 };
9742
9743 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9744 {
9745 dev->netdev_ops = &niu_netdev_ops;
9746 dev->ethtool_ops = &niu_ethtool_ops;
9747 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9748 }
9749
9750 static void __devinit niu_device_announce(struct niu *np)
9751 {
9752 struct net_device *dev = np->dev;
9753
9754 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9755
9756 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9757 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9758 dev->name,
9759 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9760 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9761 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9762 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9763 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9764 np->vpd.phy_type);
9765 } else {
9766 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9767 dev->name,
9768 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9769 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9770 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9771 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9772 "COPPER")),
9773 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9774 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9775 np->vpd.phy_type);
9776 }
9777 }
9778
9779 static void __devinit niu_set_basic_features(struct net_device *dev)
9780 {
9781 dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM |
9782 NETIF_F_GRO | NETIF_F_RXHASH);
9783 }
9784
9785 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9786 const struct pci_device_id *ent)
9787 {
9788 union niu_parent_id parent_id;
9789 struct net_device *dev;
9790 struct niu *np;
9791 int err, pos;
9792 u64 dma_mask;
9793 u16 val16;
9794
9795 niu_driver_version();
9796
9797 err = pci_enable_device(pdev);
9798 if (err) {
9799 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9800 return err;
9801 }
9802
9803 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9804 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9805 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9806 err = -ENODEV;
9807 goto err_out_disable_pdev;
9808 }
9809
9810 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9811 if (err) {
9812 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9813 goto err_out_disable_pdev;
9814 }
9815
9816 pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
9817 if (pos <= 0) {
9818 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9819 goto err_out_free_res;
9820 }
9821
9822 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9823 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9824 if (!dev) {
9825 err = -ENOMEM;
9826 goto err_out_free_res;
9827 }
9828 np = netdev_priv(dev);
9829
9830 memset(&parent_id, 0, sizeof(parent_id));
9831 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9832 parent_id.pci.bus = pdev->bus->number;
9833 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9834
9835 np->parent = niu_get_parent(np, &parent_id,
9836 PLAT_TYPE_ATLAS);
9837 if (!np->parent) {
9838 err = -ENOMEM;
9839 goto err_out_free_dev;
9840 }
9841
9842 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9843 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9844 val16 |= (PCI_EXP_DEVCTL_CERE |
9845 PCI_EXP_DEVCTL_NFERE |
9846 PCI_EXP_DEVCTL_FERE |
9847 PCI_EXP_DEVCTL_URRE |
9848 PCI_EXP_DEVCTL_RELAX_EN);
9849 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9850
9851 dma_mask = DMA_BIT_MASK(44);
9852 err = pci_set_dma_mask(pdev, dma_mask);
9853 if (!err) {
9854 dev->features |= NETIF_F_HIGHDMA;
9855 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9856 if (err) {
9857 dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9858 goto err_out_release_parent;
9859 }
9860 }
9861 if (err || dma_mask == DMA_BIT_MASK(32)) {
9862 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9863 if (err) {
9864 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9865 goto err_out_release_parent;
9866 }
9867 }
9868
9869 niu_set_basic_features(dev);
9870
9871 np->regs = pci_ioremap_bar(pdev, 0);
9872 if (!np->regs) {
9873 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9874 err = -ENOMEM;
9875 goto err_out_release_parent;
9876 }
9877
9878 pci_set_master(pdev);
9879 pci_save_state(pdev);
9880
9881 dev->irq = pdev->irq;
9882
9883 niu_assign_netdev_ops(dev);
9884
9885 err = niu_get_invariants(np);
9886 if (err) {
9887 if (err != -ENODEV)
9888 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9889 goto err_out_iounmap;
9890 }
9891
9892 err = register_netdev(dev);
9893 if (err) {
9894 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9895 goto err_out_iounmap;
9896 }
9897
9898 pci_set_drvdata(pdev, dev);
9899
9900 niu_device_announce(np);
9901
9902 return 0;
9903
9904 err_out_iounmap:
9905 if (np->regs) {
9906 iounmap(np->regs);
9907 np->regs = NULL;
9908 }
9909
9910 err_out_release_parent:
9911 niu_put_parent(np);
9912
9913 err_out_free_dev:
9914 free_netdev(dev);
9915
9916 err_out_free_res:
9917 pci_release_regions(pdev);
9918
9919 err_out_disable_pdev:
9920 pci_disable_device(pdev);
9921 pci_set_drvdata(pdev, NULL);
9922
9923 return err;
9924 }
9925
9926 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9927 {
9928 struct net_device *dev = pci_get_drvdata(pdev);
9929
9930 if (dev) {
9931 struct niu *np = netdev_priv(dev);
9932
9933 unregister_netdev(dev);
9934 if (np->regs) {
9935 iounmap(np->regs);
9936 np->regs = NULL;
9937 }
9938
9939 niu_ldg_free(np);
9940
9941 niu_put_parent(np);
9942
9943 free_netdev(dev);
9944 pci_release_regions(pdev);
9945 pci_disable_device(pdev);
9946 pci_set_drvdata(pdev, NULL);
9947 }
9948 }
9949
9950 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9951 {
9952 struct net_device *dev = pci_get_drvdata(pdev);
9953 struct niu *np = netdev_priv(dev);
9954 unsigned long flags;
9955
9956 if (!netif_running(dev))
9957 return 0;
9958
9959 flush_scheduled_work();
9960 niu_netif_stop(np);
9961
9962 del_timer_sync(&np->timer);
9963
9964 spin_lock_irqsave(&np->lock, flags);
9965 niu_enable_interrupts(np, 0);
9966 spin_unlock_irqrestore(&np->lock, flags);
9967
9968 netif_device_detach(dev);
9969
9970 spin_lock_irqsave(&np->lock, flags);
9971 niu_stop_hw(np);
9972 spin_unlock_irqrestore(&np->lock, flags);
9973
9974 pci_save_state(pdev);
9975
9976 return 0;
9977 }
9978
9979 static int niu_resume(struct pci_dev *pdev)
9980 {
9981 struct net_device *dev = pci_get_drvdata(pdev);
9982 struct niu *np = netdev_priv(dev);
9983 unsigned long flags;
9984 int err;
9985
9986 if (!netif_running(dev))
9987 return 0;
9988
9989 pci_restore_state(pdev);
9990
9991 netif_device_attach(dev);
9992
9993 spin_lock_irqsave(&np->lock, flags);
9994
9995 err = niu_init_hw(np);
9996 if (!err) {
9997 np->timer.expires = jiffies + HZ;
9998 add_timer(&np->timer);
9999 niu_netif_start(np);
10000 }
10001
10002 spin_unlock_irqrestore(&np->lock, flags);
10003
10004 return err;
10005 }
10006
10007 static struct pci_driver niu_pci_driver = {
10008 .name = DRV_MODULE_NAME,
10009 .id_table = niu_pci_tbl,
10010 .probe = niu_pci_init_one,
10011 .remove = __devexit_p(niu_pci_remove_one),
10012 .suspend = niu_suspend,
10013 .resume = niu_resume,
10014 };
10015
10016 #ifdef CONFIG_SPARC64
10017 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
10018 u64 *dma_addr, gfp_t flag)
10019 {
10020 unsigned long order = get_order(size);
10021 unsigned long page = __get_free_pages(flag, order);
10022
10023 if (page == 0UL)
10024 return NULL;
10025 memset((char *)page, 0, PAGE_SIZE << order);
10026 *dma_addr = __pa(page);
10027
10028 return (void *) page;
10029 }
10030
10031 static void niu_phys_free_coherent(struct device *dev, size_t size,
10032 void *cpu_addr, u64 handle)
10033 {
10034 unsigned long order = get_order(size);
10035
10036 free_pages((unsigned long) cpu_addr, order);
10037 }
10038
10039 static u64 niu_phys_map_page(struct device *dev, struct page *page,
10040 unsigned long offset, size_t size,
10041 enum dma_data_direction direction)
10042 {
10043 return page_to_phys(page) + offset;
10044 }
10045
10046 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10047 size_t size, enum dma_data_direction direction)
10048 {
10049 /* Nothing to do. */
10050 }
10051
10052 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10053 size_t size,
10054 enum dma_data_direction direction)
10055 {
10056 return __pa(cpu_addr);
10057 }
10058
10059 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10060 size_t size,
10061 enum dma_data_direction direction)
10062 {
10063 /* Nothing to do. */
10064 }
10065
10066 static const struct niu_ops niu_phys_ops = {
10067 .alloc_coherent = niu_phys_alloc_coherent,
10068 .free_coherent = niu_phys_free_coherent,
10069 .map_page = niu_phys_map_page,
10070 .unmap_page = niu_phys_unmap_page,
10071 .map_single = niu_phys_map_single,
10072 .unmap_single = niu_phys_unmap_single,
10073 };
10074
10075 static int __devinit niu_of_probe(struct of_device *op,
10076 const struct of_device_id *match)
10077 {
10078 union niu_parent_id parent_id;
10079 struct net_device *dev;
10080 struct niu *np;
10081 const u32 *reg;
10082 int err;
10083
10084 niu_driver_version();
10085
10086 reg = of_get_property(op->dev.of_node, "reg", NULL);
10087 if (!reg) {
10088 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10089 op->dev.of_node->full_name);
10090 return -ENODEV;
10091 }
10092
10093 dev = niu_alloc_and_init(&op->dev, NULL, op,
10094 &niu_phys_ops, reg[0] & 0x1);
10095 if (!dev) {
10096 err = -ENOMEM;
10097 goto err_out;
10098 }
10099 np = netdev_priv(dev);
10100
10101 memset(&parent_id, 0, sizeof(parent_id));
10102 parent_id.of = of_get_parent(op->dev.of_node);
10103
10104 np->parent = niu_get_parent(np, &parent_id,
10105 PLAT_TYPE_NIU);
10106 if (!np->parent) {
10107 err = -ENOMEM;
10108 goto err_out_free_dev;
10109 }
10110
10111 niu_set_basic_features(dev);
10112
10113 np->regs = of_ioremap(&op->resource[1], 0,
10114 resource_size(&op->resource[1]),
10115 "niu regs");
10116 if (!np->regs) {
10117 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10118 err = -ENOMEM;
10119 goto err_out_release_parent;
10120 }
10121
10122 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10123 resource_size(&op->resource[2]),
10124 "niu vregs-1");
10125 if (!np->vir_regs_1) {
10126 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10127 err = -ENOMEM;
10128 goto err_out_iounmap;
10129 }
10130
10131 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10132 resource_size(&op->resource[3]),
10133 "niu vregs-2");
10134 if (!np->vir_regs_2) {
10135 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10136 err = -ENOMEM;
10137 goto err_out_iounmap;
10138 }
10139
10140 niu_assign_netdev_ops(dev);
10141
10142 err = niu_get_invariants(np);
10143 if (err) {
10144 if (err != -ENODEV)
10145 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10146 goto err_out_iounmap;
10147 }
10148
10149 err = register_netdev(dev);
10150 if (err) {
10151 dev_err(&op->dev, "Cannot register net device, aborting\n");
10152 goto err_out_iounmap;
10153 }
10154
10155 dev_set_drvdata(&op->dev, dev);
10156
10157 niu_device_announce(np);
10158
10159 return 0;
10160
10161 err_out_iounmap:
10162 if (np->vir_regs_1) {
10163 of_iounmap(&op->resource[2], np->vir_regs_1,
10164 resource_size(&op->resource[2]));
10165 np->vir_regs_1 = NULL;
10166 }
10167
10168 if (np->vir_regs_2) {
10169 of_iounmap(&op->resource[3], np->vir_regs_2,
10170 resource_size(&op->resource[3]));
10171 np->vir_regs_2 = NULL;
10172 }
10173
10174 if (np->regs) {
10175 of_iounmap(&op->resource[1], np->regs,
10176 resource_size(&op->resource[1]));
10177 np->regs = NULL;
10178 }
10179
10180 err_out_release_parent:
10181 niu_put_parent(np);
10182
10183 err_out_free_dev:
10184 free_netdev(dev);
10185
10186 err_out:
10187 return err;
10188 }
10189
10190 static int __devexit niu_of_remove(struct of_device *op)
10191 {
10192 struct net_device *dev = dev_get_drvdata(&op->dev);
10193
10194 if (dev) {
10195 struct niu *np = netdev_priv(dev);
10196
10197 unregister_netdev(dev);
10198
10199 if (np->vir_regs_1) {
10200 of_iounmap(&op->resource[2], np->vir_regs_1,
10201 resource_size(&op->resource[2]));
10202 np->vir_regs_1 = NULL;
10203 }
10204
10205 if (np->vir_regs_2) {
10206 of_iounmap(&op->resource[3], np->vir_regs_2,
10207 resource_size(&op->resource[3]));
10208 np->vir_regs_2 = NULL;
10209 }
10210
10211 if (np->regs) {
10212 of_iounmap(&op->resource[1], np->regs,
10213 resource_size(&op->resource[1]));
10214 np->regs = NULL;
10215 }
10216
10217 niu_ldg_free(np);
10218
10219 niu_put_parent(np);
10220
10221 free_netdev(dev);
10222 dev_set_drvdata(&op->dev, NULL);
10223 }
10224 return 0;
10225 }
10226
10227 static const struct of_device_id niu_match[] = {
10228 {
10229 .name = "network",
10230 .compatible = "SUNW,niusl",
10231 },
10232 {},
10233 };
10234 MODULE_DEVICE_TABLE(of, niu_match);
10235
10236 static struct of_platform_driver niu_of_driver = {
10237 .driver = {
10238 .name = "niu",
10239 .owner = THIS_MODULE,
10240 .of_match_table = niu_match,
10241 },
10242 .probe = niu_of_probe,
10243 .remove = __devexit_p(niu_of_remove),
10244 };
10245
10246 #endif /* CONFIG_SPARC64 */
10247
10248 static int __init niu_init(void)
10249 {
10250 int err = 0;
10251
10252 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10253
10254 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10255
10256 #ifdef CONFIG_SPARC64
10257 err = of_register_driver(&niu_of_driver, &of_bus_type);
10258 #endif
10259
10260 if (!err) {
10261 err = pci_register_driver(&niu_pci_driver);
10262 #ifdef CONFIG_SPARC64
10263 if (err)
10264 of_unregister_driver(&niu_of_driver);
10265 #endif
10266 }
10267
10268 return err;
10269 }
10270
10271 static void __exit niu_exit(void)
10272 {
10273 pci_unregister_driver(&niu_pci_driver);
10274 #ifdef CONFIG_SPARC64
10275 of_unregister_driver(&niu_of_driver);
10276 #endif
10277 }
10278
10279 module_init(niu_init);
10280 module_exit(niu_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree