1 // SPDX-License-Identifier: GPL-2.0
2 /* niu.c: Neptune ethernet driver.
3 *
4 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
5 */
6
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/interrupt.h>
12 #include <linux/pci.h>
13 #include <linux/dma-mapping.h>
14 #include <linux/netdevice.h>
15 #include <linux/ethtool.h>
16 #include <linux/etherdevice.h>
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19 #include <linux/bitops.h>
20 #include <linux/mii.h>
21 #include <linux/if.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/ip.h>
25 #include <linux/in.h>
26 #include <linux/ipv6.h>
27 #include <linux/log2.h>
28 #include <linux/jiffies.h>
29 #include <linux/crc32.h>
30 #include <linux/list.h>
31 #include <linux/slab.h>
32
33 #include <linux/io.h>
34 #include <linux/of.h>
35
36 #include "niu.h"
37
38 /* This driver wants to store a link to a "next page" within the
39 * page struct itself by overloading the content of the "mapping"
40 * member. This is not expected by the page API, but does currently
41 * work. However, the randstruct plugin gets very bothered by this
42 * case because "mapping" (struct address_space) is randomized, so
43 * casts to/from it trigger warnings. Hide this by way of a union,
44 * to create a typed alias of "mapping", since that's how it is
45 * actually being used here.
46 */
47 union niu_page {
48 struct page page;
49 struct {
50 unsigned long __flags; /* unused alias of "flags" */
51 struct list_head __lru; /* unused alias of "lru" */
52 struct page *next; /* alias of "mapping" */
53 };
54 };
55 #define niu_next_page(p) container_of(p, union niu_page, page)->next
56
57 #define DRV_MODULE_NAME "niu"
58 #define DRV_MODULE_VERSION "1.1"
59 #define DRV_MODULE_RELDATE "Apr 22, 2010"
60
61 static char version[] =
62 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
63
64 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
65 MODULE_DESCRIPTION("NIU ethernet driver");
66 MODULE_LICENSE("GPL");
67 MODULE_VERSION(DRV_MODULE_VERSION);
68
69 #ifndef readq
readq(void __iomem * reg)70 static u64 readq(void __iomem *reg)
71 {
72 return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
73 }
74
writeq(u64 val,void __iomem * reg)75 static void writeq(u64 val, void __iomem *reg)
76 {
77 writel(val & 0xffffffff, reg);
78 writel(val >> 32, reg + 0x4UL);
79 }
80 #endif
81
82 static const struct pci_device_id niu_pci_tbl[] = {
83 {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
84 {}
85 };
86
87 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
88
89 #define NIU_TX_TIMEOUT (5 * HZ)
90
91 #define nr64(reg) readq(np->regs + (reg))
92 #define nw64(reg, val) writeq((val), np->regs + (reg))
93
94 #define nr64_mac(reg) readq(np->mac_regs + (reg))
95 #define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg))
96
97 #define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg))
98 #define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg))
99
100 #define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg))
101 #define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg))
102
103 #define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg))
104 #define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg))
105
106 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
107
108 static int niu_debug;
109 static int debug = -1;
110 module_param(debug, int, 0);
111 MODULE_PARM_DESC(debug, "NIU debug level");
112
113 #define niu_lock_parent(np, flags) \
114 spin_lock_irqsave(&np->parent->lock, flags)
115 #define niu_unlock_parent(np, flags) \
116 spin_unlock_irqrestore(&np->parent->lock, flags)
117
118 static int serdes_init_10g_serdes(struct niu *np);
119
__niu_wait_bits_clear_mac(struct niu * np,unsigned long reg,u64 bits,int limit,int delay)120 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
121 u64 bits, int limit, int delay)
122 {
123 while (--limit >= 0) {
124 u64 val = nr64_mac(reg);
125
126 if (!(val & bits))
127 break;
128 udelay(delay);
129 }
130 if (limit < 0)
131 return -ENODEV;
132 return 0;
133 }
134
__niu_set_and_wait_clear_mac(struct niu * np,unsigned long reg,u64 bits,int limit,int delay,const char * reg_name)135 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
136 u64 bits, int limit, int delay,
137 const char *reg_name)
138 {
139 int err;
140
141 nw64_mac(reg, bits);
142 err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
143 if (err)
144 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
145 (unsigned long long)bits, reg_name,
146 (unsigned long long)nr64_mac(reg));
147 return err;
148 }
149
150 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
151 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
152 __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
153 })
154
__niu_wait_bits_clear_ipp(struct niu * np,unsigned long reg,u64 bits,int limit,int delay)155 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
156 u64 bits, int limit, int delay)
157 {
158 while (--limit >= 0) {
159 u64 val = nr64_ipp(reg);
160
161 if (!(val & bits))
162 break;
163 udelay(delay);
164 }
165 if (limit < 0)
166 return -ENODEV;
167 return 0;
168 }
169
__niu_set_and_wait_clear_ipp(struct niu * np,unsigned long reg,u64 bits,int limit,int delay,const char * reg_name)170 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
171 u64 bits, int limit, int delay,
172 const char *reg_name)
173 {
174 int err;
175 u64 val;
176
177 val = nr64_ipp(reg);
178 val |= bits;
179 nw64_ipp(reg, val);
180
181 err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
182 if (err)
183 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
184 (unsigned long long)bits, reg_name,
185 (unsigned long long)nr64_ipp(reg));
186 return err;
187 }
188
189 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
190 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
191 __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
192 })
193
__niu_wait_bits_clear(struct niu * np,unsigned long reg,u64 bits,int limit,int delay)194 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
195 u64 bits, int limit, int delay)
196 {
197 while (--limit >= 0) {
198 u64 val = nr64(reg);
199
200 if (!(val & bits))
201 break;
202 udelay(delay);
203 }
204 if (limit < 0)
205 return -ENODEV;
206 return 0;
207 }
208
209 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
210 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
211 __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
212 })
213
__niu_set_and_wait_clear(struct niu * np,unsigned long reg,u64 bits,int limit,int delay,const char * reg_name)214 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
215 u64 bits, int limit, int delay,
216 const char *reg_name)
217 {
218 int err;
219
220 nw64(reg, bits);
221 err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
222 if (err)
223 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
224 (unsigned long long)bits, reg_name,
225 (unsigned long long)nr64(reg));
226 return err;
227 }
228
229 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
230 ({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
231 __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
232 })
233
niu_ldg_rearm(struct niu * np,struct niu_ldg * lp,int on)234 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
235 {
236 u64 val = (u64) lp->timer;
237
238 if (on)
239 val |= LDG_IMGMT_ARM;
240
241 nw64(LDG_IMGMT(lp->ldg_num), val);
242 }
243
niu_ldn_irq_enable(struct niu * np,int ldn,int on)244 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
245 {
246 unsigned long mask_reg, bits;
247 u64 val;
248
249 if (ldn < 0 || ldn > LDN_MAX)
250 return -EINVAL;
251
252 if (ldn < 64) {
253 mask_reg = LD_IM0(ldn);
254 bits = LD_IM0_MASK;
255 } else {
256 mask_reg = LD_IM1(ldn - 64);
257 bits = LD_IM1_MASK;
258 }
259
260 val = nr64(mask_reg);
261 if (on)
262 val &= ~bits;
263 else
264 val |= bits;
265 nw64(mask_reg, val);
266
267 return 0;
268 }
269
niu_enable_ldn_in_ldg(struct niu * np,struct niu_ldg * lp,int on)270 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
271 {
272 struct niu_parent *parent = np->parent;
273 int i;
274
275 for (i = 0; i <= LDN_MAX; i++) {
276 int err;
277
278 if (parent->ldg_map[i] != lp->ldg_num)
279 continue;
280
281 err = niu_ldn_irq_enable(np, i, on);
282 if (err)
283 return err;
284 }
285 return 0;
286 }
287
niu_enable_interrupts(struct niu * np,int on)288 static int niu_enable_interrupts(struct niu *np, int on)
289 {
290 int i;
291
292 for (i = 0; i < np->num_ldg; i++) {
293 struct niu_ldg *lp = &np->ldg[i];
294 int err;
295
296 err = niu_enable_ldn_in_ldg(np, lp, on);
297 if (err)
298 return err;
299 }
300 for (i = 0; i < np->num_ldg; i++)
301 niu_ldg_rearm(np, &np->ldg[i], on);
302
303 return 0;
304 }
305
phy_encode(u32 type,int port)306 static u32 phy_encode(u32 type, int port)
307 {
308 return type << (port * 2);
309 }
310
phy_decode(u32 val,int port)311 static u32 phy_decode(u32 val, int port)
312 {
313 return (val >> (port * 2)) & PORT_TYPE_MASK;
314 }
315
mdio_wait(struct niu * np)316 static int mdio_wait(struct niu *np)
317 {
318 int limit = 1000;
319 u64 val;
320
321 while (--limit > 0) {
322 val = nr64(MIF_FRAME_OUTPUT);
323 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
324 return val & MIF_FRAME_OUTPUT_DATA;
325
326 udelay(10);
327 }
328
329 return -ENODEV;
330 }
331
mdio_read(struct niu * np,int port,int dev,int reg)332 static int mdio_read(struct niu *np, int port, int dev, int reg)
333 {
334 int err;
335
336 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
337 err = mdio_wait(np);
338 if (err < 0)
339 return err;
340
341 nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
342 return mdio_wait(np);
343 }
344
mdio_write(struct niu * np,int port,int dev,int reg,int data)345 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
346 {
347 int err;
348
349 nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
350 err = mdio_wait(np);
351 if (err < 0)
352 return err;
353
354 nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
355 err = mdio_wait(np);
356 if (err < 0)
357 return err;
358
359 return 0;
360 }
361
mii_read(struct niu * np,int port,int reg)362 static int mii_read(struct niu *np, int port, int reg)
363 {
364 nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
365 return mdio_wait(np);
366 }
367
mii_write(struct niu * np,int port,int reg,int data)368 static int mii_write(struct niu *np, int port, int reg, int data)
369 {
370 int err;
371
372 nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
373 err = mdio_wait(np);
374 if (err < 0)
375 return err;
376
377 return 0;
378 }
379
esr2_set_tx_cfg(struct niu * np,unsigned long channel,u32 val)380 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
381 {
382 int err;
383
384 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
385 ESR2_TI_PLL_TX_CFG_L(channel),
386 val & 0xffff);
387 if (!err)
388 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
389 ESR2_TI_PLL_TX_CFG_H(channel),
390 val >> 16);
391 return err;
392 }
393
esr2_set_rx_cfg(struct niu * np,unsigned long channel,u32 val)394 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
395 {
396 int err;
397
398 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
399 ESR2_TI_PLL_RX_CFG_L(channel),
400 val & 0xffff);
401 if (!err)
402 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
403 ESR2_TI_PLL_RX_CFG_H(channel),
404 val >> 16);
405 return err;
406 }
407
408 /* Mode is always 10G fiber. */
serdes_init_niu_10g_fiber(struct niu * np)409 static int serdes_init_niu_10g_fiber(struct niu *np)
410 {
411 struct niu_link_config *lp = &np->link_config;
412 u32 tx_cfg, rx_cfg;
413 unsigned long i;
414
415 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
416 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
417 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
418 PLL_RX_CFG_EQ_LP_ADAPTIVE);
419
420 if (lp->loopback_mode == LOOPBACK_PHY) {
421 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
422
423 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
424 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
425
426 tx_cfg |= PLL_TX_CFG_ENTEST;
427 rx_cfg |= PLL_RX_CFG_ENTEST;
428 }
429
430 /* Initialize all 4 lanes of the SERDES. */
431 for (i = 0; i < 4; i++) {
432 int err = esr2_set_tx_cfg(np, i, tx_cfg);
433 if (err)
434 return err;
435 }
436
437 for (i = 0; i < 4; i++) {
438 int err = esr2_set_rx_cfg(np, i, rx_cfg);
439 if (err)
440 return err;
441 }
442
443 return 0;
444 }
445
serdes_init_niu_1g_serdes(struct niu * np)446 static int serdes_init_niu_1g_serdes(struct niu *np)
447 {
448 struct niu_link_config *lp = &np->link_config;
449 u16 pll_cfg, pll_sts;
450 int max_retry = 100;
451 u64 sig, mask, val;
452 u32 tx_cfg, rx_cfg;
453 unsigned long i;
454 int err;
455
456 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
457 PLL_TX_CFG_RATE_HALF);
458 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
459 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
460 PLL_RX_CFG_RATE_HALF);
461
462 if (np->port == 0)
463 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
464
465 if (lp->loopback_mode == LOOPBACK_PHY) {
466 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
467
468 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
469 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
470
471 tx_cfg |= PLL_TX_CFG_ENTEST;
472 rx_cfg |= PLL_RX_CFG_ENTEST;
473 }
474
475 /* Initialize PLL for 1G */
476 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
477
478 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
479 ESR2_TI_PLL_CFG_L, pll_cfg);
480 if (err) {
481 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
482 np->port, __func__);
483 return err;
484 }
485
486 pll_sts = PLL_CFG_ENPLL;
487
488 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
489 ESR2_TI_PLL_STS_L, pll_sts);
490 if (err) {
491 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
492 np->port, __func__);
493 return err;
494 }
495
496 udelay(200);
497
498 /* Initialize all 4 lanes of the SERDES. */
499 for (i = 0; i < 4; i++) {
500 err = esr2_set_tx_cfg(np, i, tx_cfg);
501 if (err)
502 return err;
503 }
504
505 for (i = 0; i < 4; i++) {
506 err = esr2_set_rx_cfg(np, i, rx_cfg);
507 if (err)
508 return err;
509 }
510
511 switch (np->port) {
512 case 0:
513 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
514 mask = val;
515 break;
516
517 case 1:
518 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
519 mask = val;
520 break;
521
522 default:
523 return -EINVAL;
524 }
525
526 while (max_retry--) {
527 sig = nr64(ESR_INT_SIGNALS);
528 if ((sig & mask) == val)
529 break;
530
531 mdelay(500);
532 }
533
534 if ((sig & mask) != val) {
535 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
536 np->port, (int)(sig & mask), (int)val);
537 return -ENODEV;
538 }
539
540 return 0;
541 }
542
serdes_init_niu_10g_serdes(struct niu * np)543 static int serdes_init_niu_10g_serdes(struct niu *np)
544 {
545 struct niu_link_config *lp = &np->link_config;
546 u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
547 int max_retry = 100;
548 u64 sig, mask, val;
549 unsigned long i;
550 int err;
551
552 tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
553 rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
554 PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
555 PLL_RX_CFG_EQ_LP_ADAPTIVE);
556
557 if (lp->loopback_mode == LOOPBACK_PHY) {
558 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
559
560 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
561 ESR2_TI_PLL_TEST_CFG_L, test_cfg);
562
563 tx_cfg |= PLL_TX_CFG_ENTEST;
564 rx_cfg |= PLL_RX_CFG_ENTEST;
565 }
566
567 /* Initialize PLL for 10G */
568 pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
569
570 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
571 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
572 if (err) {
573 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
574 np->port, __func__);
575 return err;
576 }
577
578 pll_sts = PLL_CFG_ENPLL;
579
580 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
581 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
582 if (err) {
583 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
584 np->port, __func__);
585 return err;
586 }
587
588 udelay(200);
589
590 /* Initialize all 4 lanes of the SERDES. */
591 for (i = 0; i < 4; i++) {
592 err = esr2_set_tx_cfg(np, i, tx_cfg);
593 if (err)
594 return err;
595 }
596
597 for (i = 0; i < 4; i++) {
598 err = esr2_set_rx_cfg(np, i, rx_cfg);
599 if (err)
600 return err;
601 }
602
603 /* check if serdes is ready */
604
605 switch (np->port) {
606 case 0:
607 mask = ESR_INT_SIGNALS_P0_BITS;
608 val = (ESR_INT_SRDY0_P0 |
609 ESR_INT_DET0_P0 |
610 ESR_INT_XSRDY_P0 |
611 ESR_INT_XDP_P0_CH3 |
612 ESR_INT_XDP_P0_CH2 |
613 ESR_INT_XDP_P0_CH1 |
614 ESR_INT_XDP_P0_CH0);
615 break;
616
617 case 1:
618 mask = ESR_INT_SIGNALS_P1_BITS;
619 val = (ESR_INT_SRDY0_P1 |
620 ESR_INT_DET0_P1 |
621 ESR_INT_XSRDY_P1 |
622 ESR_INT_XDP_P1_CH3 |
623 ESR_INT_XDP_P1_CH2 |
624 ESR_INT_XDP_P1_CH1 |
625 ESR_INT_XDP_P1_CH0);
626 break;
627
628 default:
629 return -EINVAL;
630 }
631
632 while (max_retry--) {
633 sig = nr64(ESR_INT_SIGNALS);
634 if ((sig & mask) == val)
635 break;
636
637 mdelay(500);
638 }
639
640 if ((sig & mask) != val) {
641 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
642 np->port, (int)(sig & mask), (int)val);
643
644 /* 10G failed, try initializing at 1G */
645 err = serdes_init_niu_1g_serdes(np);
646 if (!err) {
647 np->flags &= ~NIU_FLAGS_10G;
648 np->mac_xcvr = MAC_XCVR_PCS;
649 } else {
650 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
651 np->port);
652 return -ENODEV;
653 }
654 }
655 return 0;
656 }
657
esr_read_rxtx_ctrl(struct niu * np,unsigned long chan,u32 * val)658 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
659 {
660 int err;
661
662 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
663 if (err >= 0) {
664 *val = (err & 0xffff);
665 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
666 ESR_RXTX_CTRL_H(chan));
667 if (err >= 0)
668 *val |= ((err & 0xffff) << 16);
669 err = 0;
670 }
671 return err;
672 }
673
esr_read_glue0(struct niu * np,unsigned long chan,u32 * val)674 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
675 {
676 int err;
677
678 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
679 ESR_GLUE_CTRL0_L(chan));
680 if (err >= 0) {
681 *val = (err & 0xffff);
682 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
683 ESR_GLUE_CTRL0_H(chan));
684 if (err >= 0) {
685 *val |= ((err & 0xffff) << 16);
686 err = 0;
687 }
688 }
689 return err;
690 }
691
esr_read_reset(struct niu * np,u32 * val)692 static int esr_read_reset(struct niu *np, u32 *val)
693 {
694 int err;
695
696 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
697 ESR_RXTX_RESET_CTRL_L);
698 if (err >= 0) {
699 *val = (err & 0xffff);
700 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
701 ESR_RXTX_RESET_CTRL_H);
702 if (err >= 0) {
703 *val |= ((err & 0xffff) << 16);
704 err = 0;
705 }
706 }
707 return err;
708 }
709
esr_write_rxtx_ctrl(struct niu * np,unsigned long chan,u32 val)710 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
711 {
712 int err;
713
714 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
715 ESR_RXTX_CTRL_L(chan), val & 0xffff);
716 if (!err)
717 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
718 ESR_RXTX_CTRL_H(chan), (val >> 16));
719 return err;
720 }
721
esr_write_glue0(struct niu * np,unsigned long chan,u32 val)722 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
723 {
724 int err;
725
726 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
727 ESR_GLUE_CTRL0_L(chan), val & 0xffff);
728 if (!err)
729 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
730 ESR_GLUE_CTRL0_H(chan), (val >> 16));
731 return err;
732 }
733
esr_reset(struct niu * np)734 static int esr_reset(struct niu *np)
735 {
736 u32 reset;
737 int err;
738
739 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
740 ESR_RXTX_RESET_CTRL_L, 0x0000);
741 if (err)
742 return err;
743 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
744 ESR_RXTX_RESET_CTRL_H, 0xffff);
745 if (err)
746 return err;
747 udelay(200);
748
749 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
750 ESR_RXTX_RESET_CTRL_L, 0xffff);
751 if (err)
752 return err;
753 udelay(200);
754
755 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
756 ESR_RXTX_RESET_CTRL_H, 0x0000);
757 if (err)
758 return err;
759 udelay(200);
760
761 err = esr_read_reset(np, &reset);
762 if (err)
763 return err;
764 if (reset != 0) {
765 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
766 np->port, reset);
767 return -ENODEV;
768 }
769
770 return 0;
771 }
772
serdes_init_10g(struct niu * np)773 static int serdes_init_10g(struct niu *np)
774 {
775 struct niu_link_config *lp = &np->link_config;
776 unsigned long ctrl_reg, test_cfg_reg, i;
777 u64 ctrl_val, test_cfg_val, sig, mask, val;
778 int err;
779
780 switch (np->port) {
781 case 0:
782 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
783 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
784 break;
785 case 1:
786 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
787 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
788 break;
789
790 default:
791 return -EINVAL;
792 }
793 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
794 ENET_SERDES_CTRL_SDET_1 |
795 ENET_SERDES_CTRL_SDET_2 |
796 ENET_SERDES_CTRL_SDET_3 |
797 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
798 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
799 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
800 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
801 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
802 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
803 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
804 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
805 test_cfg_val = 0;
806
807 if (lp->loopback_mode == LOOPBACK_PHY) {
808 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
809 ENET_SERDES_TEST_MD_0_SHIFT) |
810 (ENET_TEST_MD_PAD_LOOPBACK <<
811 ENET_SERDES_TEST_MD_1_SHIFT) |
812 (ENET_TEST_MD_PAD_LOOPBACK <<
813 ENET_SERDES_TEST_MD_2_SHIFT) |
814 (ENET_TEST_MD_PAD_LOOPBACK <<
815 ENET_SERDES_TEST_MD_3_SHIFT));
816 }
817
818 nw64(ctrl_reg, ctrl_val);
819 nw64(test_cfg_reg, test_cfg_val);
820
821 /* Initialize all 4 lanes of the SERDES. */
822 for (i = 0; i < 4; i++) {
823 u32 rxtx_ctrl, glue0;
824
825 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
826 if (err)
827 return err;
828 err = esr_read_glue0(np, i, &glue0);
829 if (err)
830 return err;
831
832 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
833 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
834 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
835
836 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
837 ESR_GLUE_CTRL0_THCNT |
838 ESR_GLUE_CTRL0_BLTIME);
839 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
840 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
841 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
842 (BLTIME_300_CYCLES <<
843 ESR_GLUE_CTRL0_BLTIME_SHIFT));
844
845 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
846 if (err)
847 return err;
848 err = esr_write_glue0(np, i, glue0);
849 if (err)
850 return err;
851 }
852
853 err = esr_reset(np);
854 if (err)
855 return err;
856
857 sig = nr64(ESR_INT_SIGNALS);
858 switch (np->port) {
859 case 0:
860 mask = ESR_INT_SIGNALS_P0_BITS;
861 val = (ESR_INT_SRDY0_P0 |
862 ESR_INT_DET0_P0 |
863 ESR_INT_XSRDY_P0 |
864 ESR_INT_XDP_P0_CH3 |
865 ESR_INT_XDP_P0_CH2 |
866 ESR_INT_XDP_P0_CH1 |
867 ESR_INT_XDP_P0_CH0);
868 break;
869
870 case 1:
871 mask = ESR_INT_SIGNALS_P1_BITS;
872 val = (ESR_INT_SRDY0_P1 |
873 ESR_INT_DET0_P1 |
874 ESR_INT_XSRDY_P1 |
875 ESR_INT_XDP_P1_CH3 |
876 ESR_INT_XDP_P1_CH2 |
877 ESR_INT_XDP_P1_CH1 |
878 ESR_INT_XDP_P1_CH0);
879 break;
880
881 default:
882 return -EINVAL;
883 }
884
885 if ((sig & mask) != val) {
886 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
887 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
888 return 0;
889 }
890 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
891 np->port, (int)(sig & mask), (int)val);
892 return -ENODEV;
893 }
894 if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
895 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
896 return 0;
897 }
898
serdes_init_1g(struct niu * np)899 static int serdes_init_1g(struct niu *np)
900 {
901 u64 val;
902
903 val = nr64(ENET_SERDES_1_PLL_CFG);
904 val &= ~ENET_SERDES_PLL_FBDIV2;
905 switch (np->port) {
906 case 0:
907 val |= ENET_SERDES_PLL_HRATE0;
908 break;
909 case 1:
910 val |= ENET_SERDES_PLL_HRATE1;
911 break;
912 case 2:
913 val |= ENET_SERDES_PLL_HRATE2;
914 break;
915 case 3:
916 val |= ENET_SERDES_PLL_HRATE3;
917 break;
918 default:
919 return -EINVAL;
920 }
921 nw64(ENET_SERDES_1_PLL_CFG, val);
922
923 return 0;
924 }
925
serdes_init_1g_serdes(struct niu * np)926 static int serdes_init_1g_serdes(struct niu *np)
927 {
928 struct niu_link_config *lp = &np->link_config;
929 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
930 u64 ctrl_val, test_cfg_val, sig, mask, val;
931 int err;
932 u64 reset_val, val_rd;
933
934 val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
935 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
936 ENET_SERDES_PLL_FBDIV0;
937 switch (np->port) {
938 case 0:
939 reset_val = ENET_SERDES_RESET_0;
940 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
941 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
942 pll_cfg = ENET_SERDES_0_PLL_CFG;
943 break;
944 case 1:
945 reset_val = ENET_SERDES_RESET_1;
946 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
947 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
948 pll_cfg = ENET_SERDES_1_PLL_CFG;
949 break;
950
951 default:
952 return -EINVAL;
953 }
954 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
955 ENET_SERDES_CTRL_SDET_1 |
956 ENET_SERDES_CTRL_SDET_2 |
957 ENET_SERDES_CTRL_SDET_3 |
958 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
959 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
960 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
961 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
962 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
963 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
964 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
965 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
966 test_cfg_val = 0;
967
968 if (lp->loopback_mode == LOOPBACK_PHY) {
969 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
970 ENET_SERDES_TEST_MD_0_SHIFT) |
971 (ENET_TEST_MD_PAD_LOOPBACK <<
972 ENET_SERDES_TEST_MD_1_SHIFT) |
973 (ENET_TEST_MD_PAD_LOOPBACK <<
974 ENET_SERDES_TEST_MD_2_SHIFT) |
975 (ENET_TEST_MD_PAD_LOOPBACK <<
976 ENET_SERDES_TEST_MD_3_SHIFT));
977 }
978
979 nw64(ENET_SERDES_RESET, reset_val);
980 mdelay(20);
981 val_rd = nr64(ENET_SERDES_RESET);
982 val_rd &= ~reset_val;
983 nw64(pll_cfg, val);
984 nw64(ctrl_reg, ctrl_val);
985 nw64(test_cfg_reg, test_cfg_val);
986 nw64(ENET_SERDES_RESET, val_rd);
987 mdelay(2000);
988
989 /* Initialize all 4 lanes of the SERDES. */
990 for (i = 0; i < 4; i++) {
991 u32 rxtx_ctrl, glue0;
992
993 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
994 if (err)
995 return err;
996 err = esr_read_glue0(np, i, &glue0);
997 if (err)
998 return err;
999
1000 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
1001 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
1002 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
1003
1004 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
1005 ESR_GLUE_CTRL0_THCNT |
1006 ESR_GLUE_CTRL0_BLTIME);
1007 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
1008 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
1009 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
1010 (BLTIME_300_CYCLES <<
1011 ESR_GLUE_CTRL0_BLTIME_SHIFT));
1012
1013 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
1014 if (err)
1015 return err;
1016 err = esr_write_glue0(np, i, glue0);
1017 if (err)
1018 return err;
1019 }
1020
1021
1022 sig = nr64(ESR_INT_SIGNALS);
1023 switch (np->port) {
1024 case 0:
1025 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1026 mask = val;
1027 break;
1028
1029 case 1:
1030 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1031 mask = val;
1032 break;
1033
1034 default:
1035 return -EINVAL;
1036 }
1037
1038 if ((sig & mask) != val) {
1039 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1040 np->port, (int)(sig & mask), (int)val);
1041 return -ENODEV;
1042 }
1043
1044 return 0;
1045 }
1046
link_status_1g_serdes(struct niu * np,int * link_up_p)1047 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1048 {
1049 struct niu_link_config *lp = &np->link_config;
1050 int link_up;
1051 u64 val;
1052 u16 current_speed;
1053 unsigned long flags;
1054 u8 current_duplex;
1055
1056 link_up = 0;
1057 current_speed = SPEED_INVALID;
1058 current_duplex = DUPLEX_INVALID;
1059
1060 spin_lock_irqsave(&np->lock, flags);
1061
1062 val = nr64_pcs(PCS_MII_STAT);
1063
1064 if (val & PCS_MII_STAT_LINK_STATUS) {
1065 link_up = 1;
1066 current_speed = SPEED_1000;
1067 current_duplex = DUPLEX_FULL;
1068 }
1069
1070 lp->active_speed = current_speed;
1071 lp->active_duplex = current_duplex;
1072 spin_unlock_irqrestore(&np->lock, flags);
1073
1074 *link_up_p = link_up;
1075 return 0;
1076 }
1077
link_status_10g_serdes(struct niu * np,int * link_up_p)1078 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1079 {
1080 unsigned long flags;
1081 struct niu_link_config *lp = &np->link_config;
1082 int link_up = 0;
1083 int link_ok = 1;
1084 u64 val, val2;
1085 u16 current_speed;
1086 u8 current_duplex;
1087
1088 if (!(np->flags & NIU_FLAGS_10G))
1089 return link_status_1g_serdes(np, link_up_p);
1090
1091 current_speed = SPEED_INVALID;
1092 current_duplex = DUPLEX_INVALID;
1093 spin_lock_irqsave(&np->lock, flags);
1094
1095 val = nr64_xpcs(XPCS_STATUS(0));
1096 val2 = nr64_mac(XMAC_INTER2);
1097 if (val2 & 0x01000000)
1098 link_ok = 0;
1099
1100 if ((val & 0x1000ULL) && link_ok) {
1101 link_up = 1;
1102 current_speed = SPEED_10000;
1103 current_duplex = DUPLEX_FULL;
1104 }
1105 lp->active_speed = current_speed;
1106 lp->active_duplex = current_duplex;
1107 spin_unlock_irqrestore(&np->lock, flags);
1108 *link_up_p = link_up;
1109 return 0;
1110 }
1111
link_status_mii(struct niu * np,int * link_up_p)1112 static int link_status_mii(struct niu *np, int *link_up_p)
1113 {
1114 struct niu_link_config *lp = &np->link_config;
1115 int err;
1116 int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1117 int supported, advertising, active_speed, active_duplex;
1118
1119 err = mii_read(np, np->phy_addr, MII_BMCR);
1120 if (unlikely(err < 0))
1121 return err;
1122 bmcr = err;
1123
1124 err = mii_read(np, np->phy_addr, MII_BMSR);
1125 if (unlikely(err < 0))
1126 return err;
1127 bmsr = err;
1128
1129 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1130 if (unlikely(err < 0))
1131 return err;
1132 advert = err;
1133
1134 err = mii_read(np, np->phy_addr, MII_LPA);
1135 if (unlikely(err < 0))
1136 return err;
1137 lpa = err;
1138
1139 if (likely(bmsr & BMSR_ESTATEN)) {
1140 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1141 if (unlikely(err < 0))
1142 return err;
1143 estatus = err;
1144
1145 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1146 if (unlikely(err < 0))
1147 return err;
1148 ctrl1000 = err;
1149
1150 err = mii_read(np, np->phy_addr, MII_STAT1000);
1151 if (unlikely(err < 0))
1152 return err;
1153 stat1000 = err;
1154 } else
1155 estatus = ctrl1000 = stat1000 = 0;
1156
1157 supported = 0;
1158 if (bmsr & BMSR_ANEGCAPABLE)
1159 supported |= SUPPORTED_Autoneg;
1160 if (bmsr & BMSR_10HALF)
1161 supported |= SUPPORTED_10baseT_Half;
1162 if (bmsr & BMSR_10FULL)
1163 supported |= SUPPORTED_10baseT_Full;
1164 if (bmsr & BMSR_100HALF)
1165 supported |= SUPPORTED_100baseT_Half;
1166 if (bmsr & BMSR_100FULL)
1167 supported |= SUPPORTED_100baseT_Full;
1168 if (estatus & ESTATUS_1000_THALF)
1169 supported |= SUPPORTED_1000baseT_Half;
1170 if (estatus & ESTATUS_1000_TFULL)
1171 supported |= SUPPORTED_1000baseT_Full;
1172 lp->supported = supported;
1173
1174 advertising = mii_adv_to_ethtool_adv_t(advert);
1175 advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1176
1177 if (bmcr & BMCR_ANENABLE) {
1178 int neg, neg1000;
1179
1180 lp->active_autoneg = 1;
1181 advertising |= ADVERTISED_Autoneg;
1182
1183 neg = advert & lpa;
1184 neg1000 = (ctrl1000 << 2) & stat1000;
1185
1186 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1187 active_speed = SPEED_1000;
1188 else if (neg & LPA_100)
1189 active_speed = SPEED_100;
1190 else if (neg & (LPA_10HALF | LPA_10FULL))
1191 active_speed = SPEED_10;
1192 else
1193 active_speed = SPEED_INVALID;
1194
1195 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1196 active_duplex = DUPLEX_FULL;
1197 else if (active_speed != SPEED_INVALID)
1198 active_duplex = DUPLEX_HALF;
1199 else
1200 active_duplex = DUPLEX_INVALID;
1201 } else {
1202 lp->active_autoneg = 0;
1203
1204 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1205 active_speed = SPEED_1000;
1206 else if (bmcr & BMCR_SPEED100)
1207 active_speed = SPEED_100;
1208 else
1209 active_speed = SPEED_10;
1210
1211 if (bmcr & BMCR_FULLDPLX)
1212 active_duplex = DUPLEX_FULL;
1213 else
1214 active_duplex = DUPLEX_HALF;
1215 }
1216
1217 lp->active_advertising = advertising;
1218 lp->active_speed = active_speed;
1219 lp->active_duplex = active_duplex;
1220 *link_up_p = !!(bmsr & BMSR_LSTATUS);
1221
1222 return 0;
1223 }
1224
link_status_1g_rgmii(struct niu * np,int * link_up_p)1225 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1226 {
1227 struct niu_link_config *lp = &np->link_config;
1228 u16 current_speed, bmsr;
1229 unsigned long flags;
1230 u8 current_duplex;
1231 int err, link_up;
1232
1233 link_up = 0;
1234 current_speed = SPEED_INVALID;
1235 current_duplex = DUPLEX_INVALID;
1236
1237 spin_lock_irqsave(&np->lock, flags);
1238
1239 err = mii_read(np, np->phy_addr, MII_BMSR);
1240 if (err < 0)
1241 goto out;
1242
1243 bmsr = err;
1244 if (bmsr & BMSR_LSTATUS) {
1245 link_up = 1;
1246 current_speed = SPEED_1000;
1247 current_duplex = DUPLEX_FULL;
1248 }
1249 lp->active_speed = current_speed;
1250 lp->active_duplex = current_duplex;
1251 err = 0;
1252
1253 out:
1254 spin_unlock_irqrestore(&np->lock, flags);
1255
1256 *link_up_p = link_up;
1257 return err;
1258 }
1259
link_status_1g(struct niu * np,int * link_up_p)1260 static int link_status_1g(struct niu *np, int *link_up_p)
1261 {
1262 struct niu_link_config *lp = &np->link_config;
1263 unsigned long flags;
1264 int err;
1265
1266 spin_lock_irqsave(&np->lock, flags);
1267
1268 err = link_status_mii(np, link_up_p);
1269 lp->supported |= SUPPORTED_TP;
1270 lp->active_advertising |= ADVERTISED_TP;
1271
1272 spin_unlock_irqrestore(&np->lock, flags);
1273 return err;
1274 }
1275
bcm8704_reset(struct niu * np)1276 static int bcm8704_reset(struct niu *np)
1277 {
1278 int err, limit;
1279
1280 err = mdio_read(np, np->phy_addr,
1281 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1282 if (err < 0 || err == 0xffff)
1283 return err;
1284 err |= BMCR_RESET;
1285 err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1286 MII_BMCR, err);
1287 if (err)
1288 return err;
1289
1290 limit = 1000;
1291 while (--limit >= 0) {
1292 err = mdio_read(np, np->phy_addr,
1293 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1294 if (err < 0)
1295 return err;
1296 if (!(err & BMCR_RESET))
1297 break;
1298 }
1299 if (limit < 0) {
1300 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1301 np->port, (err & 0xffff));
1302 return -ENODEV;
1303 }
1304 return 0;
1305 }
1306
1307 /* When written, certain PHY registers need to be read back twice
1308 * in order for the bits to settle properly.
1309 */
bcm8704_user_dev3_readback(struct niu * np,int reg)1310 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1311 {
1312 int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1313 if (err < 0)
1314 return err;
1315 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1316 if (err < 0)
1317 return err;
1318 return 0;
1319 }
1320
bcm8706_init_user_dev3(struct niu * np)1321 static int bcm8706_init_user_dev3(struct niu *np)
1322 {
1323 int err;
1324
1325
1326 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1327 BCM8704_USER_OPT_DIGITAL_CTRL);
1328 if (err < 0)
1329 return err;
1330 err &= ~USER_ODIG_CTRL_GPIOS;
1331 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1332 err |= USER_ODIG_CTRL_RESV2;
1333 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1334 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1335 if (err)
1336 return err;
1337
1338 mdelay(1000);
1339
1340 return 0;
1341 }
1342
bcm8704_init_user_dev3(struct niu * np)1343 static int bcm8704_init_user_dev3(struct niu *np)
1344 {
1345 int err;
1346
1347 err = mdio_write(np, np->phy_addr,
1348 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1349 (USER_CONTROL_OPTXRST_LVL |
1350 USER_CONTROL_OPBIASFLT_LVL |
1351 USER_CONTROL_OBTMPFLT_LVL |
1352 USER_CONTROL_OPPRFLT_LVL |
1353 USER_CONTROL_OPTXFLT_LVL |
1354 USER_CONTROL_OPRXLOS_LVL |
1355 USER_CONTROL_OPRXFLT_LVL |
1356 USER_CONTROL_OPTXON_LVL |
1357 (0x3f << USER_CONTROL_RES1_SHIFT)));
1358 if (err)
1359 return err;
1360
1361 err = mdio_write(np, np->phy_addr,
1362 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1363 (USER_PMD_TX_CTL_XFP_CLKEN |
1364 (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1365 (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1366 USER_PMD_TX_CTL_TSCK_LPWREN));
1367 if (err)
1368 return err;
1369
1370 err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1371 if (err)
1372 return err;
1373 err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1374 if (err)
1375 return err;
1376
1377 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1378 BCM8704_USER_OPT_DIGITAL_CTRL);
1379 if (err < 0)
1380 return err;
1381 err &= ~USER_ODIG_CTRL_GPIOS;
1382 err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1383 err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1384 BCM8704_USER_OPT_DIGITAL_CTRL, err);
1385 if (err)
1386 return err;
1387
1388 mdelay(1000);
1389
1390 return 0;
1391 }
1392
mrvl88x2011_act_led(struct niu * np,int val)1393 static int mrvl88x2011_act_led(struct niu *np, int val)
1394 {
1395 int err;
1396
1397 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1398 MRVL88X2011_LED_8_TO_11_CTL);
1399 if (err < 0)
1400 return err;
1401
1402 err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1403 err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1404
1405 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1406 MRVL88X2011_LED_8_TO_11_CTL, err);
1407 }
1408
mrvl88x2011_led_blink_rate(struct niu * np,int rate)1409 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1410 {
1411 int err;
1412
1413 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1414 MRVL88X2011_LED_BLINK_CTL);
1415 if (err >= 0) {
1416 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1417 err |= (rate << 4);
1418
1419 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1420 MRVL88X2011_LED_BLINK_CTL, err);
1421 }
1422
1423 return err;
1424 }
1425
xcvr_init_10g_mrvl88x2011(struct niu * np)1426 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1427 {
1428 int err;
1429
1430 /* Set LED functions */
1431 err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1432 if (err)
1433 return err;
1434
1435 /* led activity */
1436 err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1437 if (err)
1438 return err;
1439
1440 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1441 MRVL88X2011_GENERAL_CTL);
1442 if (err < 0)
1443 return err;
1444
1445 err |= MRVL88X2011_ENA_XFPREFCLK;
1446
1447 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1448 MRVL88X2011_GENERAL_CTL, err);
1449 if (err < 0)
1450 return err;
1451
1452 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1453 MRVL88X2011_PMA_PMD_CTL_1);
1454 if (err < 0)
1455 return err;
1456
1457 if (np->link_config.loopback_mode == LOOPBACK_MAC)
1458 err |= MRVL88X2011_LOOPBACK;
1459 else
1460 err &= ~MRVL88X2011_LOOPBACK;
1461
1462 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1463 MRVL88X2011_PMA_PMD_CTL_1, err);
1464 if (err < 0)
1465 return err;
1466
1467 /* Enable PMD */
1468 return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1469 MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1470 }
1471
1472
xcvr_diag_bcm870x(struct niu * np)1473 static int xcvr_diag_bcm870x(struct niu *np)
1474 {
1475 u16 analog_stat0, tx_alarm_status;
1476 int err = 0;
1477
1478 #if 1
1479 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1480 MII_STAT1000);
1481 if (err < 0)
1482 return err;
1483 pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1484
1485 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1486 if (err < 0)
1487 return err;
1488 pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1489
1490 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1491 MII_NWAYTEST);
1492 if (err < 0)
1493 return err;
1494 pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1495 #endif
1496
1497 /* XXX dig this out it might not be so useful XXX */
1498 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1499 BCM8704_USER_ANALOG_STATUS0);
1500 if (err < 0)
1501 return err;
1502 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1503 BCM8704_USER_ANALOG_STATUS0);
1504 if (err < 0)
1505 return err;
1506 analog_stat0 = err;
1507
1508 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1509 BCM8704_USER_TX_ALARM_STATUS);
1510 if (err < 0)
1511 return err;
1512 err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1513 BCM8704_USER_TX_ALARM_STATUS);
1514 if (err < 0)
1515 return err;
1516 tx_alarm_status = err;
1517
1518 if (analog_stat0 != 0x03fc) {
1519 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1520 pr_info("Port %u cable not connected or bad cable\n",
1521 np->port);
1522 } else if (analog_stat0 == 0x639c) {
1523 pr_info("Port %u optical module is bad or missing\n",
1524 np->port);
1525 }
1526 }
1527
1528 return 0;
1529 }
1530
xcvr_10g_set_lb_bcm870x(struct niu * np)1531 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1532 {
1533 struct niu_link_config *lp = &np->link_config;
1534 int err;
1535
1536 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1537 MII_BMCR);
1538 if (err < 0)
1539 return err;
1540
1541 err &= ~BMCR_LOOPBACK;
1542
1543 if (lp->loopback_mode == LOOPBACK_MAC)
1544 err |= BMCR_LOOPBACK;
1545
1546 err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1547 MII_BMCR, err);
1548 if (err)
1549 return err;
1550
1551 return 0;
1552 }
1553
xcvr_init_10g_bcm8706(struct niu * np)1554 static int xcvr_init_10g_bcm8706(struct niu *np)
1555 {
1556 int err = 0;
1557 u64 val;
1558
1559 if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1560 (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1561 return err;
1562
1563 val = nr64_mac(XMAC_CONFIG);
1564 val &= ~XMAC_CONFIG_LED_POLARITY;
1565 val |= XMAC_CONFIG_FORCE_LED_ON;
1566 nw64_mac(XMAC_CONFIG, val);
1567
1568 val = nr64(MIF_CONFIG);
1569 val |= MIF_CONFIG_INDIRECT_MODE;
1570 nw64(MIF_CONFIG, val);
1571
1572 err = bcm8704_reset(np);
1573 if (err)
1574 return err;
1575
1576 err = xcvr_10g_set_lb_bcm870x(np);
1577 if (err)
1578 return err;
1579
1580 err = bcm8706_init_user_dev3(np);
1581 if (err)
1582 return err;
1583
1584 err = xcvr_diag_bcm870x(np);
1585 if (err)
1586 return err;
1587
1588 return 0;
1589 }
1590
xcvr_init_10g_bcm8704(struct niu * np)1591 static int xcvr_init_10g_bcm8704(struct niu *np)
1592 {
1593 int err;
1594
1595 err = bcm8704_reset(np);
1596 if (err)
1597 return err;
1598
1599 err = bcm8704_init_user_dev3(np);
1600 if (err)
1601 return err;
1602
1603 err = xcvr_10g_set_lb_bcm870x(np);
1604 if (err)
1605 return err;
1606
1607 err = xcvr_diag_bcm870x(np);
1608 if (err)
1609 return err;
1610
1611 return 0;
1612 }
1613
xcvr_init_10g(struct niu * np)1614 static int xcvr_init_10g(struct niu *np)
1615 {
1616 int phy_id, err;
1617 u64 val;
1618
1619 val = nr64_mac(XMAC_CONFIG);
1620 val &= ~XMAC_CONFIG_LED_POLARITY;
1621 val |= XMAC_CONFIG_FORCE_LED_ON;
1622 nw64_mac(XMAC_CONFIG, val);
1623
1624 /* XXX shared resource, lock parent XXX */
1625 val = nr64(MIF_CONFIG);
1626 val |= MIF_CONFIG_INDIRECT_MODE;
1627 nw64(MIF_CONFIG, val);
1628
1629 phy_id = phy_decode(np->parent->port_phy, np->port);
1630 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1631
1632 /* handle different phy types */
1633 switch (phy_id & NIU_PHY_ID_MASK) {
1634 case NIU_PHY_ID_MRVL88X2011:
1635 err = xcvr_init_10g_mrvl88x2011(np);
1636 break;
1637
1638 default: /* bcom 8704 */
1639 err = xcvr_init_10g_bcm8704(np);
1640 break;
1641 }
1642
1643 return err;
1644 }
1645
mii_reset(struct niu * np)1646 static int mii_reset(struct niu *np)
1647 {
1648 int limit, err;
1649
1650 err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1651 if (err)
1652 return err;
1653
1654 limit = 1000;
1655 while (--limit >= 0) {
1656 udelay(500);
1657 err = mii_read(np, np->phy_addr, MII_BMCR);
1658 if (err < 0)
1659 return err;
1660 if (!(err & BMCR_RESET))
1661 break;
1662 }
1663 if (limit < 0) {
1664 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1665 np->port, err);
1666 return -ENODEV;
1667 }
1668
1669 return 0;
1670 }
1671
xcvr_init_1g_rgmii(struct niu * np)1672 static int xcvr_init_1g_rgmii(struct niu *np)
1673 {
1674 int err;
1675 u64 val;
1676 u16 bmcr, bmsr, estat;
1677
1678 val = nr64(MIF_CONFIG);
1679 val &= ~MIF_CONFIG_INDIRECT_MODE;
1680 nw64(MIF_CONFIG, val);
1681
1682 err = mii_reset(np);
1683 if (err)
1684 return err;
1685
1686 err = mii_read(np, np->phy_addr, MII_BMSR);
1687 if (err < 0)
1688 return err;
1689 bmsr = err;
1690
1691 estat = 0;
1692 if (bmsr & BMSR_ESTATEN) {
1693 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1694 if (err < 0)
1695 return err;
1696 estat = err;
1697 }
1698
1699 bmcr = 0;
1700 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1701 if (err)
1702 return err;
1703
1704 if (bmsr & BMSR_ESTATEN) {
1705 u16 ctrl1000 = 0;
1706
1707 if (estat & ESTATUS_1000_TFULL)
1708 ctrl1000 |= ADVERTISE_1000FULL;
1709 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1710 if (err)
1711 return err;
1712 }
1713
1714 bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1715
1716 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1717 if (err)
1718 return err;
1719
1720 err = mii_read(np, np->phy_addr, MII_BMCR);
1721 if (err < 0)
1722 return err;
1723 bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1724
1725 err = mii_read(np, np->phy_addr, MII_BMSR);
1726 if (err < 0)
1727 return err;
1728
1729 return 0;
1730 }
1731
mii_init_common(struct niu * np)1732 static int mii_init_common(struct niu *np)
1733 {
1734 struct niu_link_config *lp = &np->link_config;
1735 u16 bmcr, bmsr, adv, estat;
1736 int err;
1737
1738 err = mii_reset(np);
1739 if (err)
1740 return err;
1741
1742 err = mii_read(np, np->phy_addr, MII_BMSR);
1743 if (err < 0)
1744 return err;
1745 bmsr = err;
1746
1747 estat = 0;
1748 if (bmsr & BMSR_ESTATEN) {
1749 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1750 if (err < 0)
1751 return err;
1752 estat = err;
1753 }
1754
1755 bmcr = 0;
1756 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1757 if (err)
1758 return err;
1759
1760 if (lp->loopback_mode == LOOPBACK_MAC) {
1761 bmcr |= BMCR_LOOPBACK;
1762 if (lp->active_speed == SPEED_1000)
1763 bmcr |= BMCR_SPEED1000;
1764 if (lp->active_duplex == DUPLEX_FULL)
1765 bmcr |= BMCR_FULLDPLX;
1766 }
1767
1768 if (lp->loopback_mode == LOOPBACK_PHY) {
1769 u16 aux;
1770
1771 aux = (BCM5464R_AUX_CTL_EXT_LB |
1772 BCM5464R_AUX_CTL_WRITE_1);
1773 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1774 if (err)
1775 return err;
1776 }
1777
1778 if (lp->autoneg) {
1779 u16 ctrl1000;
1780
1781 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1782 if ((bmsr & BMSR_10HALF) &&
1783 (lp->advertising & ADVERTISED_10baseT_Half))
1784 adv |= ADVERTISE_10HALF;
1785 if ((bmsr & BMSR_10FULL) &&
1786 (lp->advertising & ADVERTISED_10baseT_Full))
1787 adv |= ADVERTISE_10FULL;
1788 if ((bmsr & BMSR_100HALF) &&
1789 (lp->advertising & ADVERTISED_100baseT_Half))
1790 adv |= ADVERTISE_100HALF;
1791 if ((bmsr & BMSR_100FULL) &&
1792 (lp->advertising & ADVERTISED_100baseT_Full))
1793 adv |= ADVERTISE_100FULL;
1794 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1795 if (err)
1796 return err;
1797
1798 if (likely(bmsr & BMSR_ESTATEN)) {
1799 ctrl1000 = 0;
1800 if ((estat & ESTATUS_1000_THALF) &&
1801 (lp->advertising & ADVERTISED_1000baseT_Half))
1802 ctrl1000 |= ADVERTISE_1000HALF;
1803 if ((estat & ESTATUS_1000_TFULL) &&
1804 (lp->advertising & ADVERTISED_1000baseT_Full))
1805 ctrl1000 |= ADVERTISE_1000FULL;
1806 err = mii_write(np, np->phy_addr,
1807 MII_CTRL1000, ctrl1000);
1808 if (err)
1809 return err;
1810 }
1811
1812 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1813 } else {
1814 /* !lp->autoneg */
1815 int fulldpx;
1816
1817 if (lp->duplex == DUPLEX_FULL) {
1818 bmcr |= BMCR_FULLDPLX;
1819 fulldpx = 1;
1820 } else if (lp->duplex == DUPLEX_HALF)
1821 fulldpx = 0;
1822 else
1823 return -EINVAL;
1824
1825 if (lp->speed == SPEED_1000) {
1826 /* if X-full requested while not supported, or
1827 X-half requested while not supported... */
1828 if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1829 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1830 return -EINVAL;
1831 bmcr |= BMCR_SPEED1000;
1832 } else if (lp->speed == SPEED_100) {
1833 if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1834 (!fulldpx && !(bmsr & BMSR_100HALF)))
1835 return -EINVAL;
1836 bmcr |= BMCR_SPEED100;
1837 } else if (lp->speed == SPEED_10) {
1838 if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1839 (!fulldpx && !(bmsr & BMSR_10HALF)))
1840 return -EINVAL;
1841 } else
1842 return -EINVAL;
1843 }
1844
1845 err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1846 if (err)
1847 return err;
1848
1849 #if 0
1850 err = mii_read(np, np->phy_addr, MII_BMCR);
1851 if (err < 0)
1852 return err;
1853 bmcr = err;
1854
1855 err = mii_read(np, np->phy_addr, MII_BMSR);
1856 if (err < 0)
1857 return err;
1858 bmsr = err;
1859
1860 pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1861 np->port, bmcr, bmsr);
1862 #endif
1863
1864 return 0;
1865 }
1866
xcvr_init_1g(struct niu * np)1867 static int xcvr_init_1g(struct niu *np)
1868 {
1869 u64 val;
1870
1871 /* XXX shared resource, lock parent XXX */
1872 val = nr64(MIF_CONFIG);
1873 val &= ~MIF_CONFIG_INDIRECT_MODE;
1874 nw64(MIF_CONFIG, val);
1875
1876 return mii_init_common(np);
1877 }
1878
niu_xcvr_init(struct niu * np)1879 static int niu_xcvr_init(struct niu *np)
1880 {
1881 const struct niu_phy_ops *ops = np->phy_ops;
1882 int err;
1883
1884 err = 0;
1885 if (ops->xcvr_init)
1886 err = ops->xcvr_init(np);
1887
1888 return err;
1889 }
1890
niu_serdes_init(struct niu * np)1891 static int niu_serdes_init(struct niu *np)
1892 {
1893 const struct niu_phy_ops *ops = np->phy_ops;
1894 int err;
1895
1896 err = 0;
1897 if (ops->serdes_init)
1898 err = ops->serdes_init(np);
1899
1900 return err;
1901 }
1902
1903 static void niu_init_xif(struct niu *);
1904 static void niu_handle_led(struct niu *, int status);
1905
niu_link_status_common(struct niu * np,int link_up)1906 static int niu_link_status_common(struct niu *np, int link_up)
1907 {
1908 struct niu_link_config *lp = &np->link_config;
1909 struct net_device *dev = np->dev;
1910 unsigned long flags;
1911
1912 if (!netif_carrier_ok(dev) && link_up) {
1913 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1914 lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1915 lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1916 lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1917 "10Mbit/sec",
1918 lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1919
1920 spin_lock_irqsave(&np->lock, flags);
1921 niu_init_xif(np);
1922 niu_handle_led(np, 1);
1923 spin_unlock_irqrestore(&np->lock, flags);
1924
1925 netif_carrier_on(dev);
1926 } else if (netif_carrier_ok(dev) && !link_up) {
1927 netif_warn(np, link, dev, "Link is down\n");
1928 spin_lock_irqsave(&np->lock, flags);
1929 niu_handle_led(np, 0);
1930 spin_unlock_irqrestore(&np->lock, flags);
1931 netif_carrier_off(dev);
1932 }
1933
1934 return 0;
1935 }
1936
link_status_10g_mrvl(struct niu * np,int * link_up_p)1937 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1938 {
1939 int err, link_up, pma_status, pcs_status;
1940
1941 link_up = 0;
1942
1943 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1944 MRVL88X2011_10G_PMD_STATUS_2);
1945 if (err < 0)
1946 goto out;
1947
1948 /* Check PMA/PMD Register: 1.0001.2 == 1 */
1949 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1950 MRVL88X2011_PMA_PMD_STATUS_1);
1951 if (err < 0)
1952 goto out;
1953
1954 pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1955
1956 /* Check PMC Register : 3.0001.2 == 1: read twice */
1957 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1958 MRVL88X2011_PMA_PMD_STATUS_1);
1959 if (err < 0)
1960 goto out;
1961
1962 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1963 MRVL88X2011_PMA_PMD_STATUS_1);
1964 if (err < 0)
1965 goto out;
1966
1967 pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1968
1969 /* Check XGXS Register : 4.0018.[0-3,12] */
1970 err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1971 MRVL88X2011_10G_XGXS_LANE_STAT);
1972 if (err < 0)
1973 goto out;
1974
1975 if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1976 PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1977 PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1978 0x800))
1979 link_up = (pma_status && pcs_status) ? 1 : 0;
1980
1981 np->link_config.active_speed = SPEED_10000;
1982 np->link_config.active_duplex = DUPLEX_FULL;
1983 err = 0;
1984 out:
1985 mrvl88x2011_act_led(np, (link_up ?
1986 MRVL88X2011_LED_CTL_PCS_ACT :
1987 MRVL88X2011_LED_CTL_OFF));
1988
1989 *link_up_p = link_up;
1990 return err;
1991 }
1992
link_status_10g_bcm8706(struct niu * np,int * link_up_p)1993 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1994 {
1995 int err, link_up;
1996 link_up = 0;
1997
1998 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1999 BCM8704_PMD_RCV_SIGDET);
2000 if (err < 0 || err == 0xffff)
2001 goto out;
2002 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2003 err = 0;
2004 goto out;
2005 }
2006
2007 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2008 BCM8704_PCS_10G_R_STATUS);
2009 if (err < 0)
2010 goto out;
2011
2012 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2013 err = 0;
2014 goto out;
2015 }
2016
2017 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2018 BCM8704_PHYXS_XGXS_LANE_STAT);
2019 if (err < 0)
2020 goto out;
2021 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2022 PHYXS_XGXS_LANE_STAT_MAGIC |
2023 PHYXS_XGXS_LANE_STAT_PATTEST |
2024 PHYXS_XGXS_LANE_STAT_LANE3 |
2025 PHYXS_XGXS_LANE_STAT_LANE2 |
2026 PHYXS_XGXS_LANE_STAT_LANE1 |
2027 PHYXS_XGXS_LANE_STAT_LANE0)) {
2028 err = 0;
2029 np->link_config.active_speed = SPEED_INVALID;
2030 np->link_config.active_duplex = DUPLEX_INVALID;
2031 goto out;
2032 }
2033
2034 link_up = 1;
2035 np->link_config.active_speed = SPEED_10000;
2036 np->link_config.active_duplex = DUPLEX_FULL;
2037 err = 0;
2038
2039 out:
2040 *link_up_p = link_up;
2041 return err;
2042 }
2043
link_status_10g_bcom(struct niu * np,int * link_up_p)2044 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2045 {
2046 int err, link_up;
2047
2048 link_up = 0;
2049
2050 err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2051 BCM8704_PMD_RCV_SIGDET);
2052 if (err < 0)
2053 goto out;
2054 if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2055 err = 0;
2056 goto out;
2057 }
2058
2059 err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2060 BCM8704_PCS_10G_R_STATUS);
2061 if (err < 0)
2062 goto out;
2063 if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2064 err = 0;
2065 goto out;
2066 }
2067
2068 err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2069 BCM8704_PHYXS_XGXS_LANE_STAT);
2070 if (err < 0)
2071 goto out;
2072
2073 if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2074 PHYXS_XGXS_LANE_STAT_MAGIC |
2075 PHYXS_XGXS_LANE_STAT_LANE3 |
2076 PHYXS_XGXS_LANE_STAT_LANE2 |
2077 PHYXS_XGXS_LANE_STAT_LANE1 |
2078 PHYXS_XGXS_LANE_STAT_LANE0)) {
2079 err = 0;
2080 goto out;
2081 }
2082
2083 link_up = 1;
2084 np->link_config.active_speed = SPEED_10000;
2085 np->link_config.active_duplex = DUPLEX_FULL;
2086 err = 0;
2087
2088 out:
2089 *link_up_p = link_up;
2090 return err;
2091 }
2092
link_status_10g(struct niu * np,int * link_up_p)2093 static int link_status_10g(struct niu *np, int *link_up_p)
2094 {
2095 unsigned long flags;
2096 int err = -EINVAL;
2097
2098 spin_lock_irqsave(&np->lock, flags);
2099
2100 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2101 int phy_id;
2102
2103 phy_id = phy_decode(np->parent->port_phy, np->port);
2104 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2105
2106 /* handle different phy types */
2107 switch (phy_id & NIU_PHY_ID_MASK) {
2108 case NIU_PHY_ID_MRVL88X2011:
2109 err = link_status_10g_mrvl(np, link_up_p);
2110 break;
2111
2112 default: /* bcom 8704 */
2113 err = link_status_10g_bcom(np, link_up_p);
2114 break;
2115 }
2116 }
2117
2118 spin_unlock_irqrestore(&np->lock, flags);
2119
2120 return err;
2121 }
2122
niu_10g_phy_present(struct niu * np)2123 static int niu_10g_phy_present(struct niu *np)
2124 {
2125 u64 sig, mask, val;
2126
2127 sig = nr64(ESR_INT_SIGNALS);
2128 switch (np->port) {
2129 case 0:
2130 mask = ESR_INT_SIGNALS_P0_BITS;
2131 val = (ESR_INT_SRDY0_P0 |
2132 ESR_INT_DET0_P0 |
2133 ESR_INT_XSRDY_P0 |
2134 ESR_INT_XDP_P0_CH3 |
2135 ESR_INT_XDP_P0_CH2 |
2136 ESR_INT_XDP_P0_CH1 |
2137 ESR_INT_XDP_P0_CH0);
2138 break;
2139
2140 case 1:
2141 mask = ESR_INT_SIGNALS_P1_BITS;
2142 val = (ESR_INT_SRDY0_P1 |
2143 ESR_INT_DET0_P1 |
2144 ESR_INT_XSRDY_P1 |
2145 ESR_INT_XDP_P1_CH3 |
2146 ESR_INT_XDP_P1_CH2 |
2147 ESR_INT_XDP_P1_CH1 |
2148 ESR_INT_XDP_P1_CH0);
2149 break;
2150
2151 default:
2152 return 0;
2153 }
2154
2155 if ((sig & mask) != val)
2156 return 0;
2157 return 1;
2158 }
2159
link_status_10g_hotplug(struct niu * np,int * link_up_p)2160 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2161 {
2162 unsigned long flags;
2163 int err = 0;
2164 int phy_present;
2165 int phy_present_prev;
2166
2167 spin_lock_irqsave(&np->lock, flags);
2168
2169 if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2170 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2171 1 : 0;
2172 phy_present = niu_10g_phy_present(np);
2173 if (phy_present != phy_present_prev) {
2174 /* state change */
2175 if (phy_present) {
2176 /* A NEM was just plugged in */
2177 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2178 if (np->phy_ops->xcvr_init)
2179 err = np->phy_ops->xcvr_init(np);
2180 if (err) {
2181 err = mdio_read(np, np->phy_addr,
2182 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2183 if (err == 0xffff) {
2184 /* No mdio, back-to-back XAUI */
2185 goto out;
2186 }
2187 /* debounce */
2188 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2189 }
2190 } else {
2191 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2192 *link_up_p = 0;
2193 netif_warn(np, link, np->dev,
2194 "Hotplug PHY Removed\n");
2195 }
2196 }
2197 out:
2198 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2199 err = link_status_10g_bcm8706(np, link_up_p);
2200 if (err == 0xffff) {
2201 /* No mdio, back-to-back XAUI: it is C10NEM */
2202 *link_up_p = 1;
2203 np->link_config.active_speed = SPEED_10000;
2204 np->link_config.active_duplex = DUPLEX_FULL;
2205 }
2206 }
2207 }
2208
2209 spin_unlock_irqrestore(&np->lock, flags);
2210
2211 return 0;
2212 }
2213
niu_link_status(struct niu * np,int * link_up_p)2214 static int niu_link_status(struct niu *np, int *link_up_p)
2215 {
2216 const struct niu_phy_ops *ops = np->phy_ops;
2217 int err;
2218
2219 err = 0;
2220 if (ops->link_status)
2221 err = ops->link_status(np, link_up_p);
2222
2223 return err;
2224 }
2225
niu_timer(struct timer_list * t)2226 static void niu_timer(struct timer_list *t)
2227 {
2228 struct niu *np = from_timer(np, t, timer);
2229 unsigned long off;
2230 int err, link_up;
2231
2232 err = niu_link_status(np, &link_up);
2233 if (!err)
2234 niu_link_status_common(np, link_up);
2235
2236 if (netif_carrier_ok(np->dev))
2237 off = 5 * HZ;
2238 else
2239 off = 1 * HZ;
2240 np->timer.expires = jiffies + off;
2241
2242 add_timer(&np->timer);
2243 }
2244
2245 static const struct niu_phy_ops phy_ops_10g_serdes = {
2246 .serdes_init = serdes_init_10g_serdes,
2247 .link_status = link_status_10g_serdes,
2248 };
2249
2250 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2251 .serdes_init = serdes_init_niu_10g_serdes,
2252 .link_status = link_status_10g_serdes,
2253 };
2254
2255 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2256 .serdes_init = serdes_init_niu_1g_serdes,
2257 .link_status = link_status_1g_serdes,
2258 };
2259
2260 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2261 .xcvr_init = xcvr_init_1g_rgmii,
2262 .link_status = link_status_1g_rgmii,
2263 };
2264
2265 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2266 .serdes_init = serdes_init_niu_10g_fiber,
2267 .xcvr_init = xcvr_init_10g,
2268 .link_status = link_status_10g,
2269 };
2270
2271 static const struct niu_phy_ops phy_ops_10g_fiber = {
2272 .serdes_init = serdes_init_10g,
2273 .xcvr_init = xcvr_init_10g,
2274 .link_status = link_status_10g,
2275 };
2276
2277 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2278 .serdes_init = serdes_init_10g,
2279 .xcvr_init = xcvr_init_10g_bcm8706,
2280 .link_status = link_status_10g_hotplug,
2281 };
2282
2283 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2284 .serdes_init = serdes_init_niu_10g_fiber,
2285 .xcvr_init = xcvr_init_10g_bcm8706,
2286 .link_status = link_status_10g_hotplug,
2287 };
2288
2289 static const struct niu_phy_ops phy_ops_10g_copper = {
2290 .serdes_init = serdes_init_10g,
2291 .link_status = link_status_10g, /* XXX */
2292 };
2293
2294 static const struct niu_phy_ops phy_ops_1g_fiber = {
2295 .serdes_init = serdes_init_1g,
2296 .xcvr_init = xcvr_init_1g,
2297 .link_status = link_status_1g,
2298 };
2299
2300 static const struct niu_phy_ops phy_ops_1g_copper = {
2301 .xcvr_init = xcvr_init_1g,
2302 .link_status = link_status_1g,
2303 };
2304
2305 struct niu_phy_template {
2306 const struct niu_phy_ops *ops;
2307 u32 phy_addr_base;
2308 };
2309
2310 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2311 .ops = &phy_ops_10g_fiber_niu,
2312 .phy_addr_base = 16,
2313 };
2314
2315 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2316 .ops = &phy_ops_10g_serdes_niu,
2317 .phy_addr_base = 0,
2318 };
2319
2320 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2321 .ops = &phy_ops_1g_serdes_niu,
2322 .phy_addr_base = 0,
2323 };
2324
2325 static const struct niu_phy_template phy_template_10g_fiber = {
2326 .ops = &phy_ops_10g_fiber,
2327 .phy_addr_base = 8,
2328 };
2329
2330 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2331 .ops = &phy_ops_10g_fiber_hotplug,
2332 .phy_addr_base = 8,
2333 };
2334
2335 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2336 .ops = &phy_ops_niu_10g_hotplug,
2337 .phy_addr_base = 8,
2338 };
2339
2340 static const struct niu_phy_template phy_template_10g_copper = {
2341 .ops = &phy_ops_10g_copper,
2342 .phy_addr_base = 10,
2343 };
2344
2345 static const struct niu_phy_template phy_template_1g_fiber = {
2346 .ops = &phy_ops_1g_fiber,
2347 .phy_addr_base = 0,
2348 };
2349
2350 static const struct niu_phy_template phy_template_1g_copper = {
2351 .ops = &phy_ops_1g_copper,
2352 .phy_addr_base = 0,
2353 };
2354
2355 static const struct niu_phy_template phy_template_1g_rgmii = {
2356 .ops = &phy_ops_1g_rgmii,
2357 .phy_addr_base = 0,
2358 };
2359
2360 static const struct niu_phy_template phy_template_10g_serdes = {
2361 .ops = &phy_ops_10g_serdes,
2362 .phy_addr_base = 0,
2363 };
2364
2365 static int niu_atca_port_num[4] = {
2366 0, 0, 11, 10
2367 };
2368
serdes_init_10g_serdes(struct niu * np)2369 static int serdes_init_10g_serdes(struct niu *np)
2370 {
2371 struct niu_link_config *lp = &np->link_config;
2372 unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2373 u64 ctrl_val, test_cfg_val, sig, mask, val;
2374
2375 switch (np->port) {
2376 case 0:
2377 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2378 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2379 pll_cfg = ENET_SERDES_0_PLL_CFG;
2380 break;
2381 case 1:
2382 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2383 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2384 pll_cfg = ENET_SERDES_1_PLL_CFG;
2385 break;
2386
2387 default:
2388 return -EINVAL;
2389 }
2390 ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2391 ENET_SERDES_CTRL_SDET_1 |
2392 ENET_SERDES_CTRL_SDET_2 |
2393 ENET_SERDES_CTRL_SDET_3 |
2394 (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2395 (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2396 (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2397 (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2398 (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2399 (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2400 (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2401 (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2402 test_cfg_val = 0;
2403
2404 if (lp->loopback_mode == LOOPBACK_PHY) {
2405 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2406 ENET_SERDES_TEST_MD_0_SHIFT) |
2407 (ENET_TEST_MD_PAD_LOOPBACK <<
2408 ENET_SERDES_TEST_MD_1_SHIFT) |
2409 (ENET_TEST_MD_PAD_LOOPBACK <<
2410 ENET_SERDES_TEST_MD_2_SHIFT) |
2411 (ENET_TEST_MD_PAD_LOOPBACK <<
2412 ENET_SERDES_TEST_MD_3_SHIFT));
2413 }
2414
2415 esr_reset(np);
2416 nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2417 nw64(ctrl_reg, ctrl_val);
2418 nw64(test_cfg_reg, test_cfg_val);
2419
2420 /* Initialize all 4 lanes of the SERDES. */
2421 for (i = 0; i < 4; i++) {
2422 u32 rxtx_ctrl, glue0;
2423 int err;
2424
2425 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2426 if (err)
2427 return err;
2428 err = esr_read_glue0(np, i, &glue0);
2429 if (err)
2430 return err;
2431
2432 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2433 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2434 (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2435
2436 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2437 ESR_GLUE_CTRL0_THCNT |
2438 ESR_GLUE_CTRL0_BLTIME);
2439 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2440 (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2441 (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2442 (BLTIME_300_CYCLES <<
2443 ESR_GLUE_CTRL0_BLTIME_SHIFT));
2444
2445 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2446 if (err)
2447 return err;
2448 err = esr_write_glue0(np, i, glue0);
2449 if (err)
2450 return err;
2451 }
2452
2453
2454 sig = nr64(ESR_INT_SIGNALS);
2455 switch (np->port) {
2456 case 0:
2457 mask = ESR_INT_SIGNALS_P0_BITS;
2458 val = (ESR_INT_SRDY0_P0 |
2459 ESR_INT_DET0_P0 |
2460 ESR_INT_XSRDY_P0 |
2461 ESR_INT_XDP_P0_CH3 |
2462 ESR_INT_XDP_P0_CH2 |
2463 ESR_INT_XDP_P0_CH1 |
2464 ESR_INT_XDP_P0_CH0);
2465 break;
2466
2467 case 1:
2468 mask = ESR_INT_SIGNALS_P1_BITS;
2469 val = (ESR_INT_SRDY0_P1 |
2470 ESR_INT_DET0_P1 |
2471 ESR_INT_XSRDY_P1 |
2472 ESR_INT_XDP_P1_CH3 |
2473 ESR_INT_XDP_P1_CH2 |
2474 ESR_INT_XDP_P1_CH1 |
2475 ESR_INT_XDP_P1_CH0);
2476 break;
2477
2478 default:
2479 return -EINVAL;
2480 }
2481
2482 if ((sig & mask) != val) {
2483 int err;
2484 err = serdes_init_1g_serdes(np);
2485 if (!err) {
2486 np->flags &= ~NIU_FLAGS_10G;
2487 np->mac_xcvr = MAC_XCVR_PCS;
2488 } else {
2489 netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2490 np->port);
2491 return -ENODEV;
2492 }
2493 }
2494
2495 return 0;
2496 }
2497
niu_determine_phy_disposition(struct niu * np)2498 static int niu_determine_phy_disposition(struct niu *np)
2499 {
2500 struct niu_parent *parent = np->parent;
2501 u8 plat_type = parent->plat_type;
2502 const struct niu_phy_template *tp;
2503 u32 phy_addr_off = 0;
2504
2505 if (plat_type == PLAT_TYPE_NIU) {
2506 switch (np->flags &
2507 (NIU_FLAGS_10G |
2508 NIU_FLAGS_FIBER |
2509 NIU_FLAGS_XCVR_SERDES)) {
2510 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2511 /* 10G Serdes */
2512 tp = &phy_template_niu_10g_serdes;
2513 break;
2514 case NIU_FLAGS_XCVR_SERDES:
2515 /* 1G Serdes */
2516 tp = &phy_template_niu_1g_serdes;
2517 break;
2518 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2519 /* 10G Fiber */
2520 default:
2521 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2522 tp = &phy_template_niu_10g_hotplug;
2523 if (np->port == 0)
2524 phy_addr_off = 8;
2525 if (np->port == 1)
2526 phy_addr_off = 12;
2527 } else {
2528 tp = &phy_template_niu_10g_fiber;
2529 phy_addr_off += np->port;
2530 }
2531 break;
2532 }
2533 } else {
2534 switch (np->flags &
2535 (NIU_FLAGS_10G |
2536 NIU_FLAGS_FIBER |
2537 NIU_FLAGS_XCVR_SERDES)) {
2538 case 0:
2539 /* 1G copper */
2540 tp = &phy_template_1g_copper;
2541 if (plat_type == PLAT_TYPE_VF_P0)
2542 phy_addr_off = 10;
2543 else if (plat_type == PLAT_TYPE_VF_P1)
2544 phy_addr_off = 26;
2545
2546 phy_addr_off += (np->port ^ 0x3);
2547 break;
2548
2549 case NIU_FLAGS_10G:
2550 /* 10G copper */
2551 tp = &phy_template_10g_copper;
2552 break;
2553
2554 case NIU_FLAGS_FIBER:
2555 /* 1G fiber */
2556 tp = &phy_template_1g_fiber;
2557 break;
2558
2559 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2560 /* 10G fiber */
2561 tp = &phy_template_10g_fiber;
2562 if (plat_type == PLAT_TYPE_VF_P0 ||
2563 plat_type == PLAT_TYPE_VF_P1)
2564 phy_addr_off = 8;
2565 phy_addr_off += np->port;
2566 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2567 tp = &phy_template_10g_fiber_hotplug;
2568 if (np->port == 0)
2569 phy_addr_off = 8;
2570 if (np->port == 1)
2571 phy_addr_off = 12;
2572 }
2573 break;
2574
2575 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2576 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2577 case NIU_FLAGS_XCVR_SERDES:
2578 switch(np->port) {
2579 case 0:
2580 case 1:
2581 tp = &phy_template_10g_serdes;
2582 break;
2583 case 2:
2584 case 3:
2585 tp = &phy_template_1g_rgmii;
2586 break;
2587 default:
2588 return -EINVAL;
2589 }
2590 phy_addr_off = niu_atca_port_num[np->port];
2591 break;
2592
2593 default:
2594 return -EINVAL;
2595 }
2596 }
2597
2598 np->phy_ops = tp->ops;
2599 np->phy_addr = tp->phy_addr_base + phy_addr_off;
2600
2601 return 0;
2602 }
2603
niu_init_link(struct niu * np)2604 static int niu_init_link(struct niu *np)
2605 {
2606 struct niu_parent *parent = np->parent;
2607 int err, ignore;
2608
2609 if (parent->plat_type == PLAT_TYPE_NIU) {
2610 err = niu_xcvr_init(np);
2611 if (err)
2612 return err;
2613 msleep(200);
2614 }
2615 err = niu_serdes_init(np);
2616 if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2617 return err;
2618 msleep(200);
2619 err = niu_xcvr_init(np);
2620 if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2621 niu_link_status(np, &ignore);
2622 return 0;
2623 }
2624
niu_set_primary_mac(struct niu * np,const unsigned char * addr)2625 static void niu_set_primary_mac(struct niu *np, const unsigned char *addr)
2626 {
2627 u16 reg0 = addr[4] << 8 | addr[5];
2628 u16 reg1 = addr[2] << 8 | addr[3];
2629 u16 reg2 = addr[0] << 8 | addr[1];
2630
2631 if (np->flags & NIU_FLAGS_XMAC) {
2632 nw64_mac(XMAC_ADDR0, reg0);
2633 nw64_mac(XMAC_ADDR1, reg1);
2634 nw64_mac(XMAC_ADDR2, reg2);
2635 } else {
2636 nw64_mac(BMAC_ADDR0, reg0);
2637 nw64_mac(BMAC_ADDR1, reg1);
2638 nw64_mac(BMAC_ADDR2, reg2);
2639 }
2640 }
2641
niu_num_alt_addr(struct niu * np)2642 static int niu_num_alt_addr(struct niu *np)
2643 {
2644 if (np->flags & NIU_FLAGS_XMAC)
2645 return XMAC_NUM_ALT_ADDR;
2646 else
2647 return BMAC_NUM_ALT_ADDR;
2648 }
2649
niu_set_alt_mac(struct niu * np,int index,unsigned char * addr)2650 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2651 {
2652 u16 reg0 = addr[4] << 8 | addr[5];
2653 u16 reg1 = addr[2] << 8 | addr[3];
2654 u16 reg2 = addr[0] << 8 | addr[1];
2655
2656 if (index >= niu_num_alt_addr(np))
2657 return -EINVAL;
2658
2659 if (np->flags & NIU_FLAGS_XMAC) {
2660 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2661 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2662 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2663 } else {
2664 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2665 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2666 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2667 }
2668
2669 return 0;
2670 }
2671
niu_enable_alt_mac(struct niu * np,int index,int on)2672 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2673 {
2674 unsigned long reg;
2675 u64 val, mask;
2676
2677 if (index >= niu_num_alt_addr(np))
2678 return -EINVAL;
2679
2680 if (np->flags & NIU_FLAGS_XMAC) {
2681 reg = XMAC_ADDR_CMPEN;
2682 mask = 1 << index;
2683 } else {
2684 reg = BMAC_ADDR_CMPEN;
2685 mask = 1 << (index + 1);
2686 }
2687
2688 val = nr64_mac(reg);
2689 if (on)
2690 val |= mask;
2691 else
2692 val &= ~mask;
2693 nw64_mac(reg, val);
2694
2695 return 0;
2696 }
2697
__set_rdc_table_num_hw(struct niu * np,unsigned long reg,int num,int mac_pref)2698 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2699 int num, int mac_pref)
2700 {
2701 u64 val = nr64_mac(reg);
2702 val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2703 val |= num;
2704 if (mac_pref)
2705 val |= HOST_INFO_MPR;
2706 nw64_mac(reg, val);
2707 }
2708
__set_rdc_table_num(struct niu * np,int xmac_index,int bmac_index,int rdc_table_num,int mac_pref)2709 static int __set_rdc_table_num(struct niu *np,
2710 int xmac_index, int bmac_index,
2711 int rdc_table_num, int mac_pref)
2712 {
2713 unsigned long reg;
2714
2715 if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2716 return -EINVAL;
2717 if (np->flags & NIU_FLAGS_XMAC)
2718 reg = XMAC_HOST_INFO(xmac_index);
2719 else
2720 reg = BMAC_HOST_INFO(bmac_index);
2721 __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2722 return 0;
2723 }
2724
niu_set_primary_mac_rdc_table(struct niu * np,int table_num,int mac_pref)2725 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2726 int mac_pref)
2727 {
2728 return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2729 }
2730
niu_set_multicast_mac_rdc_table(struct niu * np,int table_num,int mac_pref)2731 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2732 int mac_pref)
2733 {
2734 return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2735 }
2736
niu_set_alt_mac_rdc_table(struct niu * np,int idx,int table_num,int mac_pref)2737 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2738 int table_num, int mac_pref)
2739 {
2740 if (idx >= niu_num_alt_addr(np))
2741 return -EINVAL;
2742 return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2743 }
2744
vlan_entry_set_parity(u64 reg_val)2745 static u64 vlan_entry_set_parity(u64 reg_val)
2746 {
2747 u64 port01_mask;
2748 u64 port23_mask;
2749
2750 port01_mask = 0x00ff;
2751 port23_mask = 0xff00;
2752
2753 if (hweight64(reg_val & port01_mask) & 1)
2754 reg_val |= ENET_VLAN_TBL_PARITY0;
2755 else
2756 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2757
2758 if (hweight64(reg_val & port23_mask) & 1)
2759 reg_val |= ENET_VLAN_TBL_PARITY1;
2760 else
2761 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2762
2763 return reg_val;
2764 }
2765
vlan_tbl_write(struct niu * np,unsigned long index,int port,int vpr,int rdc_table)2766 static void vlan_tbl_write(struct niu *np, unsigned long index,
2767 int port, int vpr, int rdc_table)
2768 {
2769 u64 reg_val = nr64(ENET_VLAN_TBL(index));
2770
2771 reg_val &= ~((ENET_VLAN_TBL_VPR |
2772 ENET_VLAN_TBL_VLANRDCTBLN) <<
2773 ENET_VLAN_TBL_SHIFT(port));
2774 if (vpr)
2775 reg_val |= (ENET_VLAN_TBL_VPR <<
2776 ENET_VLAN_TBL_SHIFT(port));
2777 reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2778
2779 reg_val = vlan_entry_set_parity(reg_val);
2780
2781 nw64(ENET_VLAN_TBL(index), reg_val);
2782 }
2783
vlan_tbl_clear(struct niu * np)2784 static void vlan_tbl_clear(struct niu *np)
2785 {
2786 int i;
2787
2788 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2789 nw64(ENET_VLAN_TBL(i), 0);
2790 }
2791
tcam_wait_bit(struct niu * np,u64 bit)2792 static int tcam_wait_bit(struct niu *np, u64 bit)
2793 {
2794 int limit = 1000;
2795
2796 while (--limit > 0) {
2797 if (nr64(TCAM_CTL) & bit)
2798 break;
2799 udelay(1);
2800 }
2801 if (limit <= 0)
2802 return -ENODEV;
2803
2804 return 0;
2805 }
2806
tcam_flush(struct niu * np,int index)2807 static int tcam_flush(struct niu *np, int index)
2808 {
2809 nw64(TCAM_KEY_0, 0x00);
2810 nw64(TCAM_KEY_MASK_0, 0xff);
2811 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2812
2813 return tcam_wait_bit(np, TCAM_CTL_STAT);
2814 }
2815
2816 #if 0
2817 static int tcam_read(struct niu *np, int index,
2818 u64 *key, u64 *mask)
2819 {
2820 int err;
2821
2822 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2823 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2824 if (!err) {
2825 key[0] = nr64(TCAM_KEY_0);
2826 key[1] = nr64(TCAM_KEY_1);
2827 key[2] = nr64(TCAM_KEY_2);
2828 key[3] = nr64(TCAM_KEY_3);
2829 mask[0] = nr64(TCAM_KEY_MASK_0);
2830 mask[1] = nr64(TCAM_KEY_MASK_1);
2831 mask[2] = nr64(TCAM_KEY_MASK_2);
2832 mask[3] = nr64(TCAM_KEY_MASK_3);
2833 }
2834 return err;
2835 }
2836 #endif
2837
tcam_write(struct niu * np,int index,u64 * key,u64 * mask)2838 static int tcam_write(struct niu *np, int index,
2839 u64 *key, u64 *mask)
2840 {
2841 nw64(TCAM_KEY_0, key[0]);
2842 nw64(TCAM_KEY_1, key[1]);
2843 nw64(TCAM_KEY_2, key[2]);
2844 nw64(TCAM_KEY_3, key[3]);
2845 nw64(TCAM_KEY_MASK_0, mask[0]);
2846 nw64(TCAM_KEY_MASK_1, mask[1]);
2847 nw64(TCAM_KEY_MASK_2, mask[2]);
2848 nw64(TCAM_KEY_MASK_3, mask[3]);
2849 nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2850
2851 return tcam_wait_bit(np, TCAM_CTL_STAT);
2852 }
2853
2854 #if 0
2855 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2856 {
2857 int err;
2858
2859 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2860 err = tcam_wait_bit(np, TCAM_CTL_STAT);
2861 if (!err)
2862 *data = nr64(TCAM_KEY_1);
2863
2864 return err;
2865 }
2866 #endif
2867
tcam_assoc_write(struct niu * np,int index,u64 assoc_data)2868 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2869 {
2870 nw64(TCAM_KEY_1, assoc_data);
2871 nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2872
2873 return tcam_wait_bit(np, TCAM_CTL_STAT);
2874 }
2875
tcam_enable(struct niu * np,int on)2876 static void tcam_enable(struct niu *np, int on)
2877 {
2878 u64 val = nr64(FFLP_CFG_1);
2879
2880 if (on)
2881 val &= ~FFLP_CFG_1_TCAM_DIS;
2882 else
2883 val |= FFLP_CFG_1_TCAM_DIS;
2884 nw64(FFLP_CFG_1, val);
2885 }
2886
tcam_set_lat_and_ratio(struct niu * np,u64 latency,u64 ratio)2887 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2888 {
2889 u64 val = nr64(FFLP_CFG_1);
2890
2891 val &= ~(FFLP_CFG_1_FFLPINITDONE |
2892 FFLP_CFG_1_CAMLAT |
2893 FFLP_CFG_1_CAMRATIO);
2894 val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2895 val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2896 nw64(FFLP_CFG_1, val);
2897
2898 val = nr64(FFLP_CFG_1);
2899 val |= FFLP_CFG_1_FFLPINITDONE;
2900 nw64(FFLP_CFG_1, val);
2901 }
2902
tcam_user_eth_class_enable(struct niu * np,unsigned long class,int on)2903 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2904 int on)
2905 {
2906 unsigned long reg;
2907 u64 val;
2908
2909 if (class < CLASS_CODE_ETHERTYPE1 ||
2910 class > CLASS_CODE_ETHERTYPE2)
2911 return -EINVAL;
2912
2913 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2914 val = nr64(reg);
2915 if (on)
2916 val |= L2_CLS_VLD;
2917 else
2918 val &= ~L2_CLS_VLD;
2919 nw64(reg, val);
2920
2921 return 0;
2922 }
2923
2924 #if 0
2925 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2926 u64 ether_type)
2927 {
2928 unsigned long reg;
2929 u64 val;
2930
2931 if (class < CLASS_CODE_ETHERTYPE1 ||
2932 class > CLASS_CODE_ETHERTYPE2 ||
2933 (ether_type & ~(u64)0xffff) != 0)
2934 return -EINVAL;
2935
2936 reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2937 val = nr64(reg);
2938 val &= ~L2_CLS_ETYPE;
2939 val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2940 nw64(reg, val);
2941
2942 return 0;
2943 }
2944 #endif
2945
tcam_user_ip_class_enable(struct niu * np,unsigned long class,int on)2946 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2947 int on)
2948 {
2949 unsigned long reg;
2950 u64 val;
2951
2952 if (class < CLASS_CODE_USER_PROG1 ||
2953 class > CLASS_CODE_USER_PROG4)
2954 return -EINVAL;
2955
2956 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2957 val = nr64(reg);
2958 if (on)
2959 val |= L3_CLS_VALID;
2960 else
2961 val &= ~L3_CLS_VALID;
2962 nw64(reg, val);
2963
2964 return 0;
2965 }
2966
tcam_user_ip_class_set(struct niu * np,unsigned long class,int ipv6,u64 protocol_id,u64 tos_mask,u64 tos_val)2967 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2968 int ipv6, u64 protocol_id,
2969 u64 tos_mask, u64 tos_val)
2970 {
2971 unsigned long reg;
2972 u64 val;
2973
2974 if (class < CLASS_CODE_USER_PROG1 ||
2975 class > CLASS_CODE_USER_PROG4 ||
2976 (protocol_id & ~(u64)0xff) != 0 ||
2977 (tos_mask & ~(u64)0xff) != 0 ||
2978 (tos_val & ~(u64)0xff) != 0)
2979 return -EINVAL;
2980
2981 reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2982 val = nr64(reg);
2983 val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2984 L3_CLS_TOSMASK | L3_CLS_TOS);
2985 if (ipv6)
2986 val |= L3_CLS_IPVER;
2987 val |= (protocol_id << L3_CLS_PID_SHIFT);
2988 val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2989 val |= (tos_val << L3_CLS_TOS_SHIFT);
2990 nw64(reg, val);
2991
2992 return 0;
2993 }
2994
tcam_early_init(struct niu * np)2995 static int tcam_early_init(struct niu *np)
2996 {
2997 unsigned long i;
2998 int err;
2999
3000 tcam_enable(np, 0);
3001 tcam_set_lat_and_ratio(np,
3002 DEFAULT_TCAM_LATENCY,
3003 DEFAULT_TCAM_ACCESS_RATIO);
3004 for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3005 err = tcam_user_eth_class_enable(np, i, 0);
3006 if (err)
3007 return err;
3008 }
3009 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3010 err = tcam_user_ip_class_enable(np, i, 0);
3011 if (err)
3012 return err;
3013 }
3014
3015 return 0;
3016 }
3017
tcam_flush_all(struct niu * np)3018 static int tcam_flush_all(struct niu *np)
3019 {
3020 unsigned long i;
3021
3022 for (i = 0; i < np->parent->tcam_num_entries; i++) {
3023 int err = tcam_flush(np, i);
3024 if (err)
3025 return err;
3026 }
3027 return 0;
3028 }
3029
hash_addr_regval(unsigned long index,unsigned long num_entries)3030 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3031 {
3032 return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3033 }
3034
3035 #if 0
3036 static int hash_read(struct niu *np, unsigned long partition,
3037 unsigned long index, unsigned long num_entries,
3038 u64 *data)
3039 {
3040 u64 val = hash_addr_regval(index, num_entries);
3041 unsigned long i;
3042
3043 if (partition >= FCRAM_NUM_PARTITIONS ||
3044 index + num_entries > FCRAM_SIZE)
3045 return -EINVAL;
3046
3047 nw64(HASH_TBL_ADDR(partition), val);
3048 for (i = 0; i < num_entries; i++)
3049 data[i] = nr64(HASH_TBL_DATA(partition));
3050
3051 return 0;
3052 }
3053 #endif
3054
hash_write(struct niu * np,unsigned long partition,unsigned long index,unsigned long num_entries,u64 * data)3055 static int hash_write(struct niu *np, unsigned long partition,
3056 unsigned long index, unsigned long num_entries,
3057 u64 *data)
3058 {
3059 u64 val = hash_addr_regval(index, num_entries);
3060 unsigned long i;
3061
3062 if (partition >= FCRAM_NUM_PARTITIONS ||
3063 index + (num_entries * 8) > FCRAM_SIZE)
3064 return -EINVAL;
3065
3066 nw64(HASH_TBL_ADDR(partition), val);
3067 for (i = 0; i < num_entries; i++)
3068 nw64(HASH_TBL_DATA(partition), data[i]);
3069
3070 return 0;
3071 }
3072
fflp_reset(struct niu * np)3073 static void fflp_reset(struct niu *np)
3074 {
3075 u64 val;
3076
3077 nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3078 udelay(10);
3079 nw64(FFLP_CFG_1, 0);
3080
3081 val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3082 nw64(FFLP_CFG_1, val);
3083 }
3084
fflp_set_timings(struct niu * np)3085 static void fflp_set_timings(struct niu *np)
3086 {
3087 u64 val = nr64(FFLP_CFG_1);
3088
3089 val &= ~FFLP_CFG_1_FFLPINITDONE;
3090 val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3091 nw64(FFLP_CFG_1, val);
3092
3093 val = nr64(FFLP_CFG_1);
3094 val |= FFLP_CFG_1_FFLPINITDONE;
3095 nw64(FFLP_CFG_1, val);
3096
3097 val = nr64(FCRAM_REF_TMR);
3098 val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3099 val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3100 val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3101 nw64(FCRAM_REF_TMR, val);
3102 }
3103
fflp_set_partition(struct niu * np,u64 partition,u64 mask,u64 base,int enable)3104 static int fflp_set_partition(struct niu *np, u64 partition,
3105 u64 mask, u64 base, int enable)
3106 {
3107 unsigned long reg;
3108 u64 val;
3109
3110 if (partition >= FCRAM_NUM_PARTITIONS ||
3111 (mask & ~(u64)0x1f) != 0 ||
3112 (base & ~(u64)0x1f) != 0)
3113 return -EINVAL;
3114
3115 reg = FLW_PRT_SEL(partition);
3116
3117 val = nr64(reg);
3118 val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3119 val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3120 val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3121 if (enable)
3122 val |= FLW_PRT_SEL_EXT;
3123 nw64(reg, val);
3124
3125 return 0;
3126 }
3127
fflp_disable_all_partitions(struct niu * np)3128 static int fflp_disable_all_partitions(struct niu *np)
3129 {
3130 unsigned long i;
3131
3132 for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3133 int err = fflp_set_partition(np, 0, 0, 0, 0);
3134 if (err)
3135 return err;
3136 }
3137 return 0;
3138 }
3139
fflp_llcsnap_enable(struct niu * np,int on)3140 static void fflp_llcsnap_enable(struct niu *np, int on)
3141 {
3142 u64 val = nr64(FFLP_CFG_1);
3143
3144 if (on)
3145 val |= FFLP_CFG_1_LLCSNAP;
3146 else
3147 val &= ~FFLP_CFG_1_LLCSNAP;
3148 nw64(FFLP_CFG_1, val);
3149 }
3150
fflp_errors_enable(struct niu * np,int on)3151 static void fflp_errors_enable(struct niu *np, int on)
3152 {
3153 u64 val = nr64(FFLP_CFG_1);
3154
3155 if (on)
3156 val &= ~FFLP_CFG_1_ERRORDIS;
3157 else
3158 val |= FFLP_CFG_1_ERRORDIS;
3159 nw64(FFLP_CFG_1, val);
3160 }
3161
fflp_hash_clear(struct niu * np)3162 static int fflp_hash_clear(struct niu *np)
3163 {
3164 struct fcram_hash_ipv4 ent;
3165 unsigned long i;
3166
3167 /* IPV4 hash entry with valid bit clear, rest is don't care. */
3168 memset(&ent, 0, sizeof(ent));
3169 ent.header = HASH_HEADER_EXT;
3170
3171 for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3172 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3173 if (err)
3174 return err;
3175 }
3176 return 0;
3177 }
3178
fflp_early_init(struct niu * np)3179 static int fflp_early_init(struct niu *np)
3180 {
3181 struct niu_parent *parent;
3182 unsigned long flags;
3183 int err;
3184
3185 niu_lock_parent(np, flags);
3186
3187 parent = np->parent;
3188 err = 0;
3189 if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3190 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3191 fflp_reset(np);
3192 fflp_set_timings(np);
3193 err = fflp_disable_all_partitions(np);
3194 if (err) {
3195 netif_printk(np, probe, KERN_DEBUG, np->dev,
3196 "fflp_disable_all_partitions failed, err=%d\n",
3197 err);
3198 goto out;
3199 }
3200 }
3201
3202 err = tcam_early_init(np);
3203 if (err) {
3204 netif_printk(np, probe, KERN_DEBUG, np->dev,
3205 "tcam_early_init failed, err=%d\n", err);
3206 goto out;
3207 }
3208 fflp_llcsnap_enable(np, 1);
3209 fflp_errors_enable(np, 0);
3210 nw64(H1POLY, 0);
3211 nw64(H2POLY, 0);
3212
3213 err = tcam_flush_all(np);
3214 if (err) {
3215 netif_printk(np, probe, KERN_DEBUG, np->dev,
3216 "tcam_flush_all failed, err=%d\n", err);
3217 goto out;
3218 }
3219 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3220 err = fflp_hash_clear(np);
3221 if (err) {
3222 netif_printk(np, probe, KERN_DEBUG, np->dev,
3223 "fflp_hash_clear failed, err=%d\n",
3224 err);
3225 goto out;
3226 }
3227 }
3228
3229 vlan_tbl_clear(np);
3230
3231 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3232 }
3233 out:
3234 niu_unlock_parent(np, flags);
3235 return err;
3236 }
3237
niu_set_flow_key(struct niu * np,unsigned long class_code,u64 key)3238 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3239 {
3240 if (class_code < CLASS_CODE_USER_PROG1 ||
3241 class_code > CLASS_CODE_SCTP_IPV6)
3242 return -EINVAL;
3243
3244 nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3245 return 0;
3246 }
3247
niu_set_tcam_key(struct niu * np,unsigned long class_code,u64 key)3248 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3249 {
3250 if (class_code < CLASS_CODE_USER_PROG1 ||
3251 class_code > CLASS_CODE_SCTP_IPV6)
3252 return -EINVAL;
3253
3254 nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3255 return 0;
3256 }
3257
3258 /* Entries for the ports are interleaved in the TCAM */
tcam_get_index(struct niu * np,u16 idx)3259 static u16 tcam_get_index(struct niu *np, u16 idx)
3260 {
3261 /* One entry reserved for IP fragment rule */
3262 if (idx >= (np->clas.tcam_sz - 1))
3263 idx = 0;
3264 return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3265 }
3266
tcam_get_size(struct niu * np)3267 static u16 tcam_get_size(struct niu *np)
3268 {
3269 /* One entry reserved for IP fragment rule */
3270 return np->clas.tcam_sz - 1;
3271 }
3272
tcam_get_valid_entry_cnt(struct niu * np)3273 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3274 {
3275 /* One entry reserved for IP fragment rule */
3276 return np->clas.tcam_valid_entries - 1;
3277 }
3278
niu_rx_skb_append(struct sk_buff * skb,struct page * page,u32 offset,u32 size,u32 truesize)3279 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3280 u32 offset, u32 size, u32 truesize)
3281 {
3282 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3283
3284 skb->len += size;
3285 skb->data_len += size;
3286 skb->truesize += truesize;
3287 }
3288
niu_hash_rxaddr(struct rx_ring_info * rp,u64 a)3289 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3290 {
3291 a >>= PAGE_SHIFT;
3292 a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3293
3294 return a & (MAX_RBR_RING_SIZE - 1);
3295 }
3296
niu_find_rxpage(struct rx_ring_info * rp,u64 addr,struct page *** link)3297 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3298 struct page ***link)
3299 {
3300 unsigned int h = niu_hash_rxaddr(rp, addr);
3301 struct page *p, **pp;
3302
3303 addr &= PAGE_MASK;
3304 pp = &rp->rxhash[h];
3305 for (; (p = *pp) != NULL; pp = &niu_next_page(p)) {
3306 if (p->index == addr) {
3307 *link = pp;
3308 goto found;
3309 }
3310 }
3311 BUG();
3312
3313 found:
3314 return p;
3315 }
3316
niu_hash_page(struct rx_ring_info * rp,struct page * page,u64 base)3317 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3318 {
3319 unsigned int h = niu_hash_rxaddr(rp, base);
3320
3321 page->index = base;
3322 niu_next_page(page) = rp->rxhash[h];
3323 rp->rxhash[h] = page;
3324 }
3325
niu_rbr_add_page(struct niu * np,struct rx_ring_info * rp,gfp_t mask,int start_index)3326 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3327 gfp_t mask, int start_index)
3328 {
3329 struct page *page;
3330 u64 addr;
3331 int i;
3332
3333 page = alloc_page(mask);
3334 if (!page)
3335 return -ENOMEM;
3336
3337 addr = np->ops->map_page(np->device, page, 0,
3338 PAGE_SIZE, DMA_FROM_DEVICE);
3339 if (np->ops->mapping_error(np->device, addr)) {
3340 __free_page(page);
3341 return -ENOMEM;
3342 }
3343
3344 niu_hash_page(rp, page, addr);
3345 if (rp->rbr_blocks_per_page > 1)
3346 page_ref_add(page, rp->rbr_blocks_per_page - 1);
3347
3348 for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3349 __le32 *rbr = &rp->rbr[start_index + i];
3350
3351 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3352 addr += rp->rbr_block_size;
3353 }
3354
3355 return 0;
3356 }
3357
niu_rbr_refill(struct niu * np,struct rx_ring_info * rp,gfp_t mask)3358 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3359 {
3360 int index = rp->rbr_index;
3361
3362 rp->rbr_pending++;
3363 if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3364 int err = niu_rbr_add_page(np, rp, mask, index);
3365
3366 if (unlikely(err)) {
3367 rp->rbr_pending--;
3368 return;
3369 }
3370
3371 rp->rbr_index += rp->rbr_blocks_per_page;
3372 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3373 if (rp->rbr_index == rp->rbr_table_size)
3374 rp->rbr_index = 0;
3375
3376 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3377 nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3378 rp->rbr_pending = 0;
3379 }
3380 }
3381 }
3382
niu_rx_pkt_ignore(struct niu * np,struct rx_ring_info * rp)3383 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3384 {
3385 unsigned int index = rp->rcr_index;
3386 int num_rcr = 0;
3387
3388 rp->rx_dropped++;
3389 while (1) {
3390 struct page *page, **link;
3391 u64 addr, val;
3392 u32 rcr_size;
3393
3394 num_rcr++;
3395
3396 val = le64_to_cpup(&rp->rcr[index]);
3397 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3398 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3399 page = niu_find_rxpage(rp, addr, &link);
3400
3401 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3402 RCR_ENTRY_PKTBUFSZ_SHIFT];
3403 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3404 *link = niu_next_page(page);
3405 np->ops->unmap_page(np->device, page->index,
3406 PAGE_SIZE, DMA_FROM_DEVICE);
3407 page->index = 0;
3408 niu_next_page(page) = NULL;
3409 __free_page(page);
3410 rp->rbr_refill_pending++;
3411 }
3412
3413 index = NEXT_RCR(rp, index);
3414 if (!(val & RCR_ENTRY_MULTI))
3415 break;
3416
3417 }
3418 rp->rcr_index = index;
3419
3420 return num_rcr;
3421 }
3422
niu_process_rx_pkt(struct napi_struct * napi,struct niu * np,struct rx_ring_info * rp)3423 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3424 struct rx_ring_info *rp)
3425 {
3426 unsigned int index = rp->rcr_index;
3427 struct rx_pkt_hdr1 *rh;
3428 struct sk_buff *skb;
3429 int len, num_rcr;
3430
3431 skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3432 if (unlikely(!skb))
3433 return niu_rx_pkt_ignore(np, rp);
3434
3435 num_rcr = 0;
3436 while (1) {
3437 struct page *page, **link;
3438 u32 rcr_size, append_size;
3439 u64 addr, val, off;
3440
3441 num_rcr++;
3442
3443 val = le64_to_cpup(&rp->rcr[index]);
3444
3445 len = (val & RCR_ENTRY_L2_LEN) >>
3446 RCR_ENTRY_L2_LEN_SHIFT;
3447 append_size = len + ETH_HLEN + ETH_FCS_LEN;
3448
3449 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3450 RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3451 page = niu_find_rxpage(rp, addr, &link);
3452
3453 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3454 RCR_ENTRY_PKTBUFSZ_SHIFT];
3455
3456 off = addr & ~PAGE_MASK;
3457 if (num_rcr == 1) {
3458 int ptype;
3459
3460 ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3461 if ((ptype == RCR_PKT_TYPE_TCP ||
3462 ptype == RCR_PKT_TYPE_UDP) &&
3463 !(val & (RCR_ENTRY_NOPORT |
3464 RCR_ENTRY_ERROR)))
3465 skb->ip_summed = CHECKSUM_UNNECESSARY;
3466 else
3467 skb_checksum_none_assert(skb);
3468 } else if (!(val & RCR_ENTRY_MULTI))
3469 append_size = append_size - skb->len;
3470
3471 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3472 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3473 *link = niu_next_page(page);
3474 np->ops->unmap_page(np->device, page->index,
3475 PAGE_SIZE, DMA_FROM_DEVICE);
3476 page->index = 0;
3477 niu_next_page(page) = NULL;
3478 rp->rbr_refill_pending++;
3479 } else
3480 get_page(page);
3481
3482 index = NEXT_RCR(rp, index);
3483 if (!(val & RCR_ENTRY_MULTI))
3484 break;
3485
3486 }
3487 rp->rcr_index = index;
3488
3489 len += sizeof(*rh);
3490 len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3491 __pskb_pull_tail(skb, len);
3492
3493 rh = (struct rx_pkt_hdr1 *) skb->data;
3494 if (np->dev->features & NETIF_F_RXHASH)
3495 skb_set_hash(skb,
3496 ((u32)rh->hashval2_0 << 24 |
3497 (u32)rh->hashval2_1 << 16 |
3498 (u32)rh->hashval1_1 << 8 |
3499 (u32)rh->hashval1_2 << 0),
3500 PKT_HASH_TYPE_L3);
3501 skb_pull(skb, sizeof(*rh));
3502
3503 rp->rx_packets++;
3504 rp->rx_bytes += skb->len;
3505
3506 skb->protocol = eth_type_trans(skb, np->dev);
3507 skb_record_rx_queue(skb, rp->rx_channel);
3508 napi_gro_receive(napi, skb);
3509
3510 return num_rcr;
3511 }
3512
niu_rbr_fill(struct niu * np,struct rx_ring_info * rp,gfp_t mask)3513 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3514 {
3515 int blocks_per_page = rp->rbr_blocks_per_page;
3516 int err, index = rp->rbr_index;
3517
3518 err = 0;
3519 while (index < (rp->rbr_table_size - blocks_per_page)) {
3520 err = niu_rbr_add_page(np, rp, mask, index);
3521 if (unlikely(err))
3522 break;
3523
3524 index += blocks_per_page;
3525 }
3526
3527 rp->rbr_index = index;
3528 return err;
3529 }
3530
niu_rbr_free(struct niu * np,struct rx_ring_info * rp)3531 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3532 {
3533 int i;
3534
3535 for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3536 struct page *page;
3537
3538 page = rp->rxhash[i];
3539 while (page) {
3540 struct page *next = niu_next_page(page);
3541 u64 base = page->index;
3542
3543 np->ops->unmap_page(np->device, base, PAGE_SIZE,
3544 DMA_FROM_DEVICE);
3545 page->index = 0;
3546 niu_next_page(page) = NULL;
3547
3548 __free_page(page);
3549
3550 page = next;
3551 }
3552 }
3553
3554 for (i = 0; i < rp->rbr_table_size; i++)
3555 rp->rbr[i] = cpu_to_le32(0);
3556 rp->rbr_index = 0;
3557 }
3558
release_tx_packet(struct niu * np,struct tx_ring_info * rp,int idx)3559 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3560 {
3561 struct tx_buff_info *tb = &rp->tx_buffs[idx];
3562 struct sk_buff *skb = tb->skb;
3563 struct tx_pkt_hdr *tp;
3564 u64 tx_flags;
3565 int i, len;
3566
3567 tp = (struct tx_pkt_hdr *) skb->data;
3568 tx_flags = le64_to_cpup(&tp->flags);
3569
3570 rp->tx_packets++;
3571 rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3572 ((tx_flags & TXHDR_PAD) / 2));
3573
3574 len = skb_headlen(skb);
3575 np->ops->unmap_single(np->device, tb->mapping,
3576 len, DMA_TO_DEVICE);
3577
3578 if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3579 rp->mark_pending--;
3580
3581 tb->skb = NULL;
3582 do {
3583 idx = NEXT_TX(rp, idx);
3584 len -= MAX_TX_DESC_LEN;
3585 } while (len > 0);
3586
3587 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3588 tb = &rp->tx_buffs[idx];
3589 BUG_ON(tb->skb != NULL);
3590 np->ops->unmap_page(np->device, tb->mapping,
3591 skb_frag_size(&skb_shinfo(skb)->frags[i]),
3592 DMA_TO_DEVICE);
3593 idx = NEXT_TX(rp, idx);
3594 }
3595
3596 dev_kfree_skb(skb);
3597
3598 return idx;
3599 }
3600
3601 #define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4)
3602
niu_tx_work(struct niu * np,struct tx_ring_info * rp)3603 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3604 {
3605 struct netdev_queue *txq;
3606 u16 pkt_cnt, tmp;
3607 int cons, index;
3608 u64 cs;
3609
3610 index = (rp - np->tx_rings);
3611 txq = netdev_get_tx_queue(np->dev, index);
3612
3613 cs = rp->tx_cs;
3614 if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3615 goto out;
3616
3617 tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3618 pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3619 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3620
3621 rp->last_pkt_cnt = tmp;
3622
3623 cons = rp->cons;
3624
3625 netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3626 "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3627
3628 while (pkt_cnt--)
3629 cons = release_tx_packet(np, rp, cons);
3630
3631 rp->cons = cons;
3632 smp_mb();
3633
3634 out:
3635 if (unlikely(netif_tx_queue_stopped(txq) &&
3636 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3637 __netif_tx_lock(txq, smp_processor_id());
3638 if (netif_tx_queue_stopped(txq) &&
3639 (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3640 netif_tx_wake_queue(txq);
3641 __netif_tx_unlock(txq);
3642 }
3643 }
3644
niu_sync_rx_discard_stats(struct niu * np,struct rx_ring_info * rp,const int limit)3645 static inline void niu_sync_rx_discard_stats(struct niu *np,
3646 struct rx_ring_info *rp,
3647 const int limit)
3648 {
3649 /* This elaborate scheme is needed for reading the RX discard
3650 * counters, as they are only 16-bit and can overflow quickly,
3651 * and because the overflow indication bit is not usable as
3652 * the counter value does not wrap, but remains at max value
3653 * 0xFFFF.
3654 *
3655 * In theory and in practice counters can be lost in between
3656 * reading nr64() and clearing the counter nw64(). For this
3657 * reason, the number of counter clearings nw64() is
3658 * limited/reduced though the limit parameter.
3659 */
3660 int rx_channel = rp->rx_channel;
3661 u32 misc, wred;
3662
3663 /* RXMISC (Receive Miscellaneous Discard Count), covers the
3664 * following discard events: IPP (Input Port Process),
3665 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3666 * Block Ring) prefetch buffer is empty.
3667 */
3668 misc = nr64(RXMISC(rx_channel));
3669 if (unlikely((misc & RXMISC_COUNT) > limit)) {
3670 nw64(RXMISC(rx_channel), 0);
3671 rp->rx_errors += misc & RXMISC_COUNT;
3672
3673 if (unlikely(misc & RXMISC_OFLOW))
3674 dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3675 rx_channel);
3676
3677 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3678 "rx-%d: MISC drop=%u over=%u\n",
3679 rx_channel, misc, misc-limit);
3680 }
3681
3682 /* WRED (Weighted Random Early Discard) by hardware */
3683 wred = nr64(RED_DIS_CNT(rx_channel));
3684 if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3685 nw64(RED_DIS_CNT(rx_channel), 0);
3686 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3687
3688 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3689 dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3690
3691 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3692 "rx-%d: WRED drop=%u over=%u\n",
3693 rx_channel, wred, wred-limit);
3694 }
3695 }
3696
niu_rx_work(struct napi_struct * napi,struct niu * np,struct rx_ring_info * rp,int budget)3697 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3698 struct rx_ring_info *rp, int budget)
3699 {
3700 int qlen, rcr_done = 0, work_done = 0;
3701 struct rxdma_mailbox *mbox = rp->mbox;
3702 u64 stat;
3703
3704 #if 1
3705 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3706 qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3707 #else
3708 stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3709 qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3710 #endif
3711 mbox->rx_dma_ctl_stat = 0;
3712 mbox->rcrstat_a = 0;
3713
3714 netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3715 "%s(chan[%d]), stat[%llx] qlen=%d\n",
3716 __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3717
3718 rcr_done = work_done = 0;
3719 qlen = min(qlen, budget);
3720 while (work_done < qlen) {
3721 rcr_done += niu_process_rx_pkt(napi, np, rp);
3722 work_done++;
3723 }
3724
3725 if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3726 unsigned int i;
3727
3728 for (i = 0; i < rp->rbr_refill_pending; i++)
3729 niu_rbr_refill(np, rp, GFP_ATOMIC);
3730 rp->rbr_refill_pending = 0;
3731 }
3732
3733 stat = (RX_DMA_CTL_STAT_MEX |
3734 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3735 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3736
3737 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3738
3739 /* Only sync discards stats when qlen indicate potential for drops */
3740 if (qlen > 10)
3741 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3742
3743 return work_done;
3744 }
3745
niu_poll_core(struct niu * np,struct niu_ldg * lp,int budget)3746 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3747 {
3748 u64 v0 = lp->v0;
3749 u32 tx_vec = (v0 >> 32);
3750 u32 rx_vec = (v0 & 0xffffffff);
3751 int i, work_done = 0;
3752
3753 netif_printk(np, intr, KERN_DEBUG, np->dev,
3754 "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3755
3756 for (i = 0; i < np->num_tx_rings; i++) {
3757 struct tx_ring_info *rp = &np->tx_rings[i];
3758 if (tx_vec & (1 << rp->tx_channel))
3759 niu_tx_work(np, rp);
3760 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3761 }
3762
3763 for (i = 0; i < np->num_rx_rings; i++) {
3764 struct rx_ring_info *rp = &np->rx_rings[i];
3765
3766 if (rx_vec & (1 << rp->rx_channel)) {
3767 int this_work_done;
3768
3769 this_work_done = niu_rx_work(&lp->napi, np, rp,
3770 budget);
3771
3772 budget -= this_work_done;
3773 work_done += this_work_done;
3774 }
3775 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3776 }
3777
3778 return work_done;
3779 }
3780
niu_poll(struct napi_struct * napi,int budget)3781 static int niu_poll(struct napi_struct *napi, int budget)
3782 {
3783 struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3784 struct niu *np = lp->np;
3785 int work_done;
3786
3787 work_done = niu_poll_core(np, lp, budget);
3788
3789 if (work_done < budget) {
3790 napi_complete_done(napi, work_done);
3791 niu_ldg_rearm(np, lp, 1);
3792 }
3793 return work_done;
3794 }
3795
niu_log_rxchan_errors(struct niu * np,struct rx_ring_info * rp,u64 stat)3796 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3797 u64 stat)
3798 {
3799 netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3800
3801 if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3802 pr_cont("RBR_TMOUT ");
3803 if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3804 pr_cont("RSP_CNT ");
3805 if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3806 pr_cont("BYTE_EN_BUS ");
3807 if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3808 pr_cont("RSP_DAT ");
3809 if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3810 pr_cont("RCR_ACK ");
3811 if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3812 pr_cont("RCR_SHA_PAR ");
3813 if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3814 pr_cont("RBR_PRE_PAR ");
3815 if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3816 pr_cont("CONFIG ");
3817 if (stat & RX_DMA_CTL_STAT_RCRINCON)
3818 pr_cont("RCRINCON ");
3819 if (stat & RX_DMA_CTL_STAT_RCRFULL)
3820 pr_cont("RCRFULL ");
3821 if (stat & RX_DMA_CTL_STAT_RBRFULL)
3822 pr_cont("RBRFULL ");
3823 if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3824 pr_cont("RBRLOGPAGE ");
3825 if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3826 pr_cont("CFIGLOGPAGE ");
3827 if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3828 pr_cont("DC_FIDO ");
3829
3830 pr_cont(")\n");
3831 }
3832
niu_rx_error(struct niu * np,struct rx_ring_info * rp)3833 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3834 {
3835 u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3836 int err = 0;
3837
3838
3839 if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3840 RX_DMA_CTL_STAT_PORT_FATAL))
3841 err = -EINVAL;
3842
3843 if (err) {
3844 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3845 rp->rx_channel,
3846 (unsigned long long) stat);
3847
3848 niu_log_rxchan_errors(np, rp, stat);
3849 }
3850
3851 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3852 stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3853
3854 return err;
3855 }
3856
niu_log_txchan_errors(struct niu * np,struct tx_ring_info * rp,u64 cs)3857 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3858 u64 cs)
3859 {
3860 netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3861
3862 if (cs & TX_CS_MBOX_ERR)
3863 pr_cont("MBOX ");
3864 if (cs & TX_CS_PKT_SIZE_ERR)
3865 pr_cont("PKT_SIZE ");
3866 if (cs & TX_CS_TX_RING_OFLOW)
3867 pr_cont("TX_RING_OFLOW ");
3868 if (cs & TX_CS_PREF_BUF_PAR_ERR)
3869 pr_cont("PREF_BUF_PAR ");
3870 if (cs & TX_CS_NACK_PREF)
3871 pr_cont("NACK_PREF ");
3872 if (cs & TX_CS_NACK_PKT_RD)
3873 pr_cont("NACK_PKT_RD ");
3874 if (cs & TX_CS_CONF_PART_ERR)
3875 pr_cont("CONF_PART ");
3876 if (cs & TX_CS_PKT_PRT_ERR)
3877 pr_cont("PKT_PTR ");
3878
3879 pr_cont(")\n");
3880 }
3881
niu_tx_error(struct niu * np,struct tx_ring_info * rp)3882 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3883 {
3884 u64 cs, logh, logl;
3885
3886 cs = nr64(TX_CS(rp->tx_channel));
3887 logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3888 logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3889
3890 netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3891 rp->tx_channel,
3892 (unsigned long long)cs,
3893 (unsigned long long)logh,
3894 (unsigned long long)logl);
3895
3896 niu_log_txchan_errors(np, rp, cs);
3897
3898 return -ENODEV;
3899 }
3900
niu_mif_interrupt(struct niu * np)3901 static int niu_mif_interrupt(struct niu *np)
3902 {
3903 u64 mif_status = nr64(MIF_STATUS);
3904 int phy_mdint = 0;
3905
3906 if (np->flags & NIU_FLAGS_XMAC) {
3907 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3908
3909 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3910 phy_mdint = 1;
3911 }
3912
3913 netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3914 (unsigned long long)mif_status, phy_mdint);
3915
3916 return -ENODEV;
3917 }
3918
niu_xmac_interrupt(struct niu * np)3919 static void niu_xmac_interrupt(struct niu *np)
3920 {
3921 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3922 u64 val;
3923
3924 val = nr64_mac(XTXMAC_STATUS);
3925 if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3926 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3927 if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3928 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3929 if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3930 mp->tx_fifo_errors++;
3931 if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3932 mp->tx_overflow_errors++;
3933 if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3934 mp->tx_max_pkt_size_errors++;
3935 if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3936 mp->tx_underflow_errors++;
3937
3938 val = nr64_mac(XRXMAC_STATUS);
3939 if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3940 mp->rx_local_faults++;
3941 if (val & XRXMAC_STATUS_RFLT_DET)
3942 mp->rx_remote_faults++;
3943 if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3944 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3945 if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3946 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3947 if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3948 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3949 if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3950 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3951 if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3952 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3953 if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3954 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3955 if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3956 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3957 if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3958 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3959 if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3960 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3961 if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3962 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3963 if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3964 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3965 if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3966 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3967 if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3968 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3969 if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3970 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3971 if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3972 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3973 if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3974 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3975 if (val & XRXMAC_STATUS_RXUFLOW)
3976 mp->rx_underflows++;
3977 if (val & XRXMAC_STATUS_RXOFLOW)
3978 mp->rx_overflows++;
3979
3980 val = nr64_mac(XMAC_FC_STAT);
3981 if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3982 mp->pause_off_state++;
3983 if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3984 mp->pause_on_state++;
3985 if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3986 mp->pause_received++;
3987 }
3988
niu_bmac_interrupt(struct niu * np)3989 static void niu_bmac_interrupt(struct niu *np)
3990 {
3991 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3992 u64 val;
3993
3994 val = nr64_mac(BTXMAC_STATUS);
3995 if (val & BTXMAC_STATUS_UNDERRUN)
3996 mp->tx_underflow_errors++;
3997 if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3998 mp->tx_max_pkt_size_errors++;
3999 if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4000 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4001 if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4002 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4003
4004 val = nr64_mac(BRXMAC_STATUS);
4005 if (val & BRXMAC_STATUS_OVERFLOW)
4006 mp->rx_overflows++;
4007 if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4008 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4009 if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4010 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4011 if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4012 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4013 if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4014 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4015
4016 val = nr64_mac(BMAC_CTRL_STATUS);
4017 if (val & BMAC_CTRL_STATUS_NOPAUSE)
4018 mp->pause_off_state++;
4019 if (val & BMAC_CTRL_STATUS_PAUSE)
4020 mp->pause_on_state++;
4021 if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4022 mp->pause_received++;
4023 }
4024
niu_mac_interrupt(struct niu * np)4025 static int niu_mac_interrupt(struct niu *np)
4026 {
4027 if (np->flags & NIU_FLAGS_XMAC)
4028 niu_xmac_interrupt(np);
4029 else
4030 niu_bmac_interrupt(np);
4031
4032 return 0;
4033 }
4034
niu_log_device_error(struct niu * np,u64 stat)4035 static void niu_log_device_error(struct niu *np, u64 stat)
4036 {
4037 netdev_err(np->dev, "Core device errors ( ");
4038
4039 if (stat & SYS_ERR_MASK_META2)
4040 pr_cont("META2 ");
4041 if (stat & SYS_ERR_MASK_META1)
4042 pr_cont("META1 ");
4043 if (stat & SYS_ERR_MASK_PEU)
4044 pr_cont("PEU ");
4045 if (stat & SYS_ERR_MASK_TXC)
4046 pr_cont("TXC ");
4047 if (stat & SYS_ERR_MASK_RDMC)
4048 pr_cont("RDMC ");
4049 if (stat & SYS_ERR_MASK_TDMC)
4050 pr_cont("TDMC ");
4051 if (stat & SYS_ERR_MASK_ZCP)
4052 pr_cont("ZCP ");
4053 if (stat & SYS_ERR_MASK_FFLP)
4054 pr_cont("FFLP ");
4055 if (stat & SYS_ERR_MASK_IPP)
4056 pr_cont("IPP ");
4057 if (stat & SYS_ERR_MASK_MAC)
4058 pr_cont("MAC ");
4059 if (stat & SYS_ERR_MASK_SMX)
4060 pr_cont("SMX ");
4061
4062 pr_cont(")\n");
4063 }
4064
niu_device_error(struct niu * np)4065 static int niu_device_error(struct niu *np)
4066 {
4067 u64 stat = nr64(SYS_ERR_STAT);
4068
4069 netdev_err(np->dev, "Core device error, stat[%llx]\n",
4070 (unsigned long long)stat);
4071
4072 niu_log_device_error(np, stat);
4073
4074 return -ENODEV;
4075 }
4076
niu_slowpath_interrupt(struct niu * np,struct niu_ldg * lp,u64 v0,u64 v1,u64 v2)4077 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4078 u64 v0, u64 v1, u64 v2)
4079 {
4080
4081 int i, err = 0;
4082
4083 lp->v0 = v0;
4084 lp->v1 = v1;
4085 lp->v2 = v2;
4086
4087 if (v1 & 0x00000000ffffffffULL) {
4088 u32 rx_vec = (v1 & 0xffffffff);
4089
4090 for (i = 0; i < np->num_rx_rings; i++) {
4091 struct rx_ring_info *rp = &np->rx_rings[i];
4092
4093 if (rx_vec & (1 << rp->rx_channel)) {
4094 int r = niu_rx_error(np, rp);
4095 if (r) {
4096 err = r;
4097 } else {
4098 if (!v0)
4099 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4100 RX_DMA_CTL_STAT_MEX);
4101 }
4102 }
4103 }
4104 }
4105 if (v1 & 0x7fffffff00000000ULL) {
4106 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4107
4108 for (i = 0; i < np->num_tx_rings; i++) {
4109 struct tx_ring_info *rp = &np->tx_rings[i];
4110
4111 if (tx_vec & (1 << rp->tx_channel)) {
4112 int r = niu_tx_error(np, rp);
4113 if (r)
4114 err = r;
4115 }
4116 }
4117 }
4118 if ((v0 | v1) & 0x8000000000000000ULL) {
4119 int r = niu_mif_interrupt(np);
4120 if (r)
4121 err = r;
4122 }
4123 if (v2) {
4124 if (v2 & 0x01ef) {
4125 int r = niu_mac_interrupt(np);
4126 if (r)
4127 err = r;
4128 }
4129 if (v2 & 0x0210) {
4130 int r = niu_device_error(np);
4131 if (r)
4132 err = r;
4133 }
4134 }
4135
4136 if (err)
4137 niu_enable_interrupts(np, 0);
4138
4139 return err;
4140 }
4141
niu_rxchan_intr(struct niu * np,struct rx_ring_info * rp,int ldn)4142 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4143 int ldn)
4144 {
4145 struct rxdma_mailbox *mbox = rp->mbox;
4146 u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4147
4148 stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4149 RX_DMA_CTL_STAT_RCRTO);
4150 nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4151
4152 netif_printk(np, intr, KERN_DEBUG, np->dev,
4153 "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4154 }
4155
niu_txchan_intr(struct niu * np,struct tx_ring_info * rp,int ldn)4156 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4157 int ldn)
4158 {
4159 rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4160
4161 netif_printk(np, intr, KERN_DEBUG, np->dev,
4162 "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4163 }
4164
__niu_fastpath_interrupt(struct niu * np,int ldg,u64 v0)4165 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4166 {
4167 struct niu_parent *parent = np->parent;
4168 u32 rx_vec, tx_vec;
4169 int i;
4170
4171 tx_vec = (v0 >> 32);
4172 rx_vec = (v0 & 0xffffffff);
4173
4174 for (i = 0; i < np->num_rx_rings; i++) {
4175 struct rx_ring_info *rp = &np->rx_rings[i];
4176 int ldn = LDN_RXDMA(rp->rx_channel);
4177
4178 if (parent->ldg_map[ldn] != ldg)
4179 continue;
4180
4181 nw64(LD_IM0(ldn), LD_IM0_MASK);
4182 if (rx_vec & (1 << rp->rx_channel))
4183 niu_rxchan_intr(np, rp, ldn);
4184 }
4185
4186 for (i = 0; i < np->num_tx_rings; i++) {
4187 struct tx_ring_info *rp = &np->tx_rings[i];
4188 int ldn = LDN_TXDMA(rp->tx_channel);
4189
4190 if (parent->ldg_map[ldn] != ldg)
4191 continue;
4192
4193 nw64(LD_IM0(ldn), LD_IM0_MASK);
4194 if (tx_vec & (1 << rp->tx_channel))
4195 niu_txchan_intr(np, rp, ldn);
4196 }
4197 }
4198
niu_schedule_napi(struct niu * np,struct niu_ldg * lp,u64 v0,u64 v1,u64 v2)4199 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4200 u64 v0, u64 v1, u64 v2)
4201 {
4202 if (likely(napi_schedule_prep(&lp->napi))) {
4203 lp->v0 = v0;
4204 lp->v1 = v1;
4205 lp->v2 = v2;
4206 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4207 __napi_schedule(&lp->napi);
4208 }
4209 }
4210
niu_interrupt(int irq,void * dev_id)4211 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4212 {
4213 struct niu_ldg *lp = dev_id;
4214 struct niu *np = lp->np;
4215 int ldg = lp->ldg_num;
4216 unsigned long flags;
4217 u64 v0, v1, v2;
4218
4219 if (netif_msg_intr(np))
4220 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4221 __func__, lp, ldg);
4222
4223 spin_lock_irqsave(&np->lock, flags);
4224
4225 v0 = nr64(LDSV0(ldg));
4226 v1 = nr64(LDSV1(ldg));
4227 v2 = nr64(LDSV2(ldg));
4228
4229 if (netif_msg_intr(np))
4230 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4231 (unsigned long long) v0,
4232 (unsigned long long) v1,
4233 (unsigned long long) v2);
4234
4235 if (unlikely(!v0 && !v1 && !v2)) {
4236 spin_unlock_irqrestore(&np->lock, flags);
4237 return IRQ_NONE;
4238 }
4239
4240 if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4241 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4242 if (err)
4243 goto out;
4244 }
4245 if (likely(v0 & ~((u64)1 << LDN_MIF)))
4246 niu_schedule_napi(np, lp, v0, v1, v2);
4247 else
4248 niu_ldg_rearm(np, lp, 1);
4249 out:
4250 spin_unlock_irqrestore(&np->lock, flags);
4251
4252 return IRQ_HANDLED;
4253 }
4254
niu_free_rx_ring_info(struct niu * np,struct rx_ring_info * rp)4255 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4256 {
4257 if (rp->mbox) {
4258 np->ops->free_coherent(np->device,
4259 sizeof(struct rxdma_mailbox),
4260 rp->mbox, rp->mbox_dma);
4261 rp->mbox = NULL;
4262 }
4263 if (rp->rcr) {
4264 np->ops->free_coherent(np->device,
4265 MAX_RCR_RING_SIZE * sizeof(__le64),
4266 rp->rcr, rp->rcr_dma);
4267 rp->rcr = NULL;
4268 rp->rcr_table_size = 0;
4269 rp->rcr_index = 0;
4270 }
4271 if (rp->rbr) {
4272 niu_rbr_free(np, rp);
4273
4274 np->ops->free_coherent(np->device,
4275 MAX_RBR_RING_SIZE * sizeof(__le32),
4276 rp->rbr, rp->rbr_dma);
4277 rp->rbr = NULL;
4278 rp->rbr_table_size = 0;
4279 rp->rbr_index = 0;
4280 }
4281 kfree(rp->rxhash);
4282 rp->rxhash = NULL;
4283 }
4284
niu_free_tx_ring_info(struct niu * np,struct tx_ring_info * rp)4285 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4286 {
4287 if (rp->mbox) {
4288 np->ops->free_coherent(np->device,
4289 sizeof(struct txdma_mailbox),
4290 rp->mbox, rp->mbox_dma);
4291 rp->mbox = NULL;
4292 }
4293 if (rp->descr) {
4294 int i;
4295
4296 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4297 if (rp->tx_buffs[i].skb)
4298 (void) release_tx_packet(np, rp, i);
4299 }
4300
4301 np->ops->free_coherent(np->device,
4302 MAX_TX_RING_SIZE * sizeof(__le64),
4303 rp->descr, rp->descr_dma);
4304 rp->descr = NULL;
4305 rp->pending = 0;
4306 rp->prod = 0;
4307 rp->cons = 0;
4308 rp->wrap_bit = 0;
4309 }
4310 }
4311
niu_free_channels(struct niu * np)4312 static void niu_free_channels(struct niu *np)
4313 {
4314 int i;
4315
4316 if (np->rx_rings) {
4317 for (i = 0; i < np->num_rx_rings; i++) {
4318 struct rx_ring_info *rp = &np->rx_rings[i];
4319
4320 niu_free_rx_ring_info(np, rp);
4321 }
4322 kfree(np->rx_rings);
4323 np->rx_rings = NULL;
4324 np->num_rx_rings = 0;
4325 }
4326
4327 if (np->tx_rings) {
4328 for (i = 0; i < np->num_tx_rings; i++) {
4329 struct tx_ring_info *rp = &np->tx_rings[i];
4330
4331 niu_free_tx_ring_info(np, rp);
4332 }
4333 kfree(np->tx_rings);
4334 np->tx_rings = NULL;
4335 np->num_tx_rings = 0;
4336 }
4337 }
4338
niu_alloc_rx_ring_info(struct niu * np,struct rx_ring_info * rp)4339 static int niu_alloc_rx_ring_info(struct niu *np,
4340 struct rx_ring_info *rp)
4341 {
4342 BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4343
4344 rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
4345 GFP_KERNEL);
4346 if (!rp->rxhash)
4347 return -ENOMEM;
4348
4349 rp->mbox = np->ops->alloc_coherent(np->device,
4350 sizeof(struct rxdma_mailbox),
4351 &rp->mbox_dma, GFP_KERNEL);
4352 if (!rp->mbox)
4353 return -ENOMEM;
4354 if ((unsigned long)rp->mbox & (64UL - 1)) {
4355 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4356 rp->mbox);
4357 return -EINVAL;
4358 }
4359
4360 rp->rcr = np->ops->alloc_coherent(np->device,
4361 MAX_RCR_RING_SIZE * sizeof(__le64),
4362 &rp->rcr_dma, GFP_KERNEL);
4363 if (!rp->rcr)
4364 return -ENOMEM;
4365 if ((unsigned long)rp->rcr & (64UL - 1)) {
4366 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4367 rp->rcr);
4368 return -EINVAL;
4369 }
4370 rp->rcr_table_size = MAX_RCR_RING_SIZE;
4371 rp->rcr_index = 0;
4372
4373 rp->rbr = np->ops->alloc_coherent(np->device,
4374 MAX_RBR_RING_SIZE * sizeof(__le32),
4375 &rp->rbr_dma, GFP_KERNEL);
4376 if (!rp->rbr)
4377 return -ENOMEM;
4378 if ((unsigned long)rp->rbr & (64UL - 1)) {
4379 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4380 rp->rbr);
4381 return -EINVAL;
4382 }
4383 rp->rbr_table_size = MAX_RBR_RING_SIZE;
4384 rp->rbr_index = 0;
4385 rp->rbr_pending = 0;
4386
4387 return 0;
4388 }
4389
niu_set_max_burst(struct niu * np,struct tx_ring_info * rp)4390 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4391 {
4392 int mtu = np->dev->mtu;
4393
4394 /* These values are recommended by the HW designers for fair
4395 * utilization of DRR amongst the rings.
4396 */
4397 rp->max_burst = mtu + 32;
4398 if (rp->max_burst > 4096)
4399 rp->max_burst = 4096;
4400 }
4401
niu_alloc_tx_ring_info(struct niu * np,struct tx_ring_info * rp)4402 static int niu_alloc_tx_ring_info(struct niu *np,
4403 struct tx_ring_info *rp)
4404 {
4405 BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4406
4407 rp->mbox = np->ops->alloc_coherent(np->device,
4408 sizeof(struct txdma_mailbox),
4409 &rp->mbox_dma, GFP_KERNEL);
4410 if (!rp->mbox)
4411 return -ENOMEM;
4412 if ((unsigned long)rp->mbox & (64UL - 1)) {
4413 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4414 rp->mbox);
4415 return -EINVAL;
4416 }
4417
4418 rp->descr = np->ops->alloc_coherent(np->device,
4419 MAX_TX_RING_SIZE * sizeof(__le64),
4420 &rp->descr_dma, GFP_KERNEL);
4421 if (!rp->descr)
4422 return -ENOMEM;
4423 if ((unsigned long)rp->descr & (64UL - 1)) {
4424 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4425 rp->descr);
4426 return -EINVAL;
4427 }
4428
4429 rp->pending = MAX_TX_RING_SIZE;
4430 rp->prod = 0;
4431 rp->cons = 0;
4432 rp->wrap_bit = 0;
4433
4434 /* XXX make these configurable... XXX */
4435 rp->mark_freq = rp->pending / 4;
4436
4437 niu_set_max_burst(np, rp);
4438
4439 return 0;
4440 }
4441
niu_size_rbr(struct niu * np,struct rx_ring_info * rp)4442 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4443 {
4444 u16 bss;
4445
4446 bss = min(PAGE_SHIFT, 15);
4447
4448 rp->rbr_block_size = 1 << bss;
4449 rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4450
4451 rp->rbr_sizes[0] = 256;
4452 rp->rbr_sizes[1] = 1024;
4453 if (np->dev->mtu > ETH_DATA_LEN) {
4454 switch (PAGE_SIZE) {
4455 case 4 * 1024:
4456 rp->rbr_sizes[2] = 4096;
4457 break;
4458
4459 default:
4460 rp->rbr_sizes[2] = 8192;
4461 break;
4462 }
4463 } else {
4464 rp->rbr_sizes[2] = 2048;
4465 }
4466 rp->rbr_sizes[3] = rp->rbr_block_size;
4467 }
4468
niu_alloc_channels(struct niu * np)4469 static int niu_alloc_channels(struct niu *np)
4470 {
4471 struct niu_parent *parent = np->parent;
4472 int first_rx_channel, first_tx_channel;
4473 int num_rx_rings, num_tx_rings;
4474 struct rx_ring_info *rx_rings;
4475 struct tx_ring_info *tx_rings;
4476 int i, port, err;
4477
4478 port = np->port;
4479 first_rx_channel = first_tx_channel = 0;
4480 for (i = 0; i < port; i++) {
4481 first_rx_channel += parent->rxchan_per_port[i];
4482 first_tx_channel += parent->txchan_per_port[i];
4483 }
4484
4485 num_rx_rings = parent->rxchan_per_port[port];
4486 num_tx_rings = parent->txchan_per_port[port];
4487
4488 rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4489 GFP_KERNEL);
4490 err = -ENOMEM;
4491 if (!rx_rings)
4492 goto out_err;
4493
4494 np->num_rx_rings = num_rx_rings;
4495 smp_wmb();
4496 np->rx_rings = rx_rings;
4497
4498 netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4499
4500 for (i = 0; i < np->num_rx_rings; i++) {
4501 struct rx_ring_info *rp = &np->rx_rings[i];
4502
4503 rp->np = np;
4504 rp->rx_channel = first_rx_channel + i;
4505
4506 err = niu_alloc_rx_ring_info(np, rp);
4507 if (err)
4508 goto out_err;
4509
4510 niu_size_rbr(np, rp);
4511
4512 /* XXX better defaults, configurable, etc... XXX */
4513 rp->nonsyn_window = 64;
4514 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4515 rp->syn_window = 64;
4516 rp->syn_threshold = rp->rcr_table_size - 64;
4517 rp->rcr_pkt_threshold = 16;
4518 rp->rcr_timeout = 8;
4519 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4520 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4521 rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4522
4523 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4524 if (err)
4525 goto out_err;
4526 }
4527
4528 tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4529 GFP_KERNEL);
4530 err = -ENOMEM;
4531 if (!tx_rings)
4532 goto out_err;
4533
4534 np->num_tx_rings = num_tx_rings;
4535 smp_wmb();
4536 np->tx_rings = tx_rings;
4537
4538 netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4539
4540 for (i = 0; i < np->num_tx_rings; i++) {
4541 struct tx_ring_info *rp = &np->tx_rings[i];
4542
4543 rp->np = np;
4544 rp->tx_channel = first_tx_channel + i;
4545
4546 err = niu_alloc_tx_ring_info(np, rp);
4547 if (err)
4548 goto out_err;
4549 }
4550
4551 return 0;
4552
4553 out_err:
4554 niu_free_channels(np);
4555 return err;
4556 }
4557
niu_tx_cs_sng_poll(struct niu * np,int channel)4558 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4559 {
4560 int limit = 1000;
4561
4562 while (--limit > 0) {
4563 u64 val = nr64(TX_CS(channel));
4564 if (val & TX_CS_SNG_STATE)
4565 return 0;
4566 }
4567 return -ENODEV;
4568 }
4569
niu_tx_channel_stop(struct niu * np,int channel)4570 static int niu_tx_channel_stop(struct niu *np, int channel)
4571 {
4572 u64 val = nr64(TX_CS(channel));
4573
4574 val |= TX_CS_STOP_N_GO;
4575 nw64(TX_CS(channel), val);
4576
4577 return niu_tx_cs_sng_poll(np, channel);
4578 }
4579
niu_tx_cs_reset_poll(struct niu * np,int channel)4580 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4581 {
4582 int limit = 1000;
4583
4584 while (--limit > 0) {
4585 u64 val = nr64(TX_CS(channel));
4586 if (!(val & TX_CS_RST))
4587 return 0;
4588 }
4589 return -ENODEV;
4590 }
4591
niu_tx_channel_reset(struct niu * np,int channel)4592 static int niu_tx_channel_reset(struct niu *np, int channel)
4593 {
4594 u64 val = nr64(TX_CS(channel));
4595 int err;
4596
4597 val |= TX_CS_RST;
4598 nw64(TX_CS(channel), val);
4599
4600 err = niu_tx_cs_reset_poll(np, channel);
4601 if (!err)
4602 nw64(TX_RING_KICK(channel), 0);
4603
4604 return err;
4605 }
4606
niu_tx_channel_lpage_init(struct niu * np,int channel)4607 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4608 {
4609 u64 val;
4610
4611 nw64(TX_LOG_MASK1(channel), 0);
4612 nw64(TX_LOG_VAL1(channel), 0);
4613 nw64(TX_LOG_MASK2(channel), 0);
4614 nw64(TX_LOG_VAL2(channel), 0);
4615 nw64(TX_LOG_PAGE_RELO1(channel), 0);
4616 nw64(TX_LOG_PAGE_RELO2(channel), 0);
4617 nw64(TX_LOG_PAGE_HDL(channel), 0);
4618
4619 val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4620 val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4621 nw64(TX_LOG_PAGE_VLD(channel), val);
4622
4623 /* XXX TXDMA 32bit mode? XXX */
4624
4625 return 0;
4626 }
4627
niu_txc_enable_port(struct niu * np,int on)4628 static void niu_txc_enable_port(struct niu *np, int on)
4629 {
4630 unsigned long flags;
4631 u64 val, mask;
4632
4633 niu_lock_parent(np, flags);
4634 val = nr64(TXC_CONTROL);
4635 mask = (u64)1 << np->port;
4636 if (on) {
4637 val |= TXC_CONTROL_ENABLE | mask;
4638 } else {
4639 val &= ~mask;
4640 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4641 val &= ~TXC_CONTROL_ENABLE;
4642 }
4643 nw64(TXC_CONTROL, val);
4644 niu_unlock_parent(np, flags);
4645 }
4646
niu_txc_set_imask(struct niu * np,u64 imask)4647 static void niu_txc_set_imask(struct niu *np, u64 imask)
4648 {
4649 unsigned long flags;
4650 u64 val;
4651
4652 niu_lock_parent(np, flags);
4653 val = nr64(TXC_INT_MASK);
4654 val &= ~TXC_INT_MASK_VAL(np->port);
4655 val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4656 niu_unlock_parent(np, flags);
4657 }
4658
niu_txc_port_dma_enable(struct niu * np,int on)4659 static void niu_txc_port_dma_enable(struct niu *np, int on)
4660 {
4661 u64 val = 0;
4662
4663 if (on) {
4664 int i;
4665
4666 for (i = 0; i < np->num_tx_rings; i++)
4667 val |= (1 << np->tx_rings[i].tx_channel);
4668 }
4669 nw64(TXC_PORT_DMA(np->port), val);
4670 }
4671
niu_init_one_tx_channel(struct niu * np,struct tx_ring_info * rp)4672 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4673 {
4674 int err, channel = rp->tx_channel;
4675 u64 val, ring_len;
4676
4677 err = niu_tx_channel_stop(np, channel);
4678 if (err)
4679 return err;
4680
4681 err = niu_tx_channel_reset(np, channel);
4682 if (err)
4683 return err;
4684
4685 err = niu_tx_channel_lpage_init(np, channel);
4686 if (err)
4687 return err;
4688
4689 nw64(TXC_DMA_MAX(channel), rp->max_burst);
4690 nw64(TX_ENT_MSK(channel), 0);
4691
4692 if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4693 TX_RNG_CFIG_STADDR)) {
4694 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4695 channel, (unsigned long long)rp->descr_dma);
4696 return -EINVAL;
4697 }
4698
4699 /* The length field in TX_RNG_CFIG is measured in 64-byte
4700 * blocks. rp->pending is the number of TX descriptors in
4701 * our ring, 8 bytes each, thus we divide by 8 bytes more
4702 * to get the proper value the chip wants.
4703 */
4704 ring_len = (rp->pending / 8);
4705
4706 val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4707 rp->descr_dma);
4708 nw64(TX_RNG_CFIG(channel), val);
4709
4710 if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4711 ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4712 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4713 channel, (unsigned long long)rp->mbox_dma);
4714 return -EINVAL;
4715 }
4716 nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4717 nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4718
4719 nw64(TX_CS(channel), 0);
4720
4721 rp->last_pkt_cnt = 0;
4722
4723 return 0;
4724 }
4725
niu_init_rdc_groups(struct niu * np)4726 static void niu_init_rdc_groups(struct niu *np)
4727 {
4728 struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4729 int i, first_table_num = tp->first_table_num;
4730
4731 for (i = 0; i < tp->num_tables; i++) {
4732 struct rdc_table *tbl = &tp->tables[i];
4733 int this_table = first_table_num + i;
4734 int slot;
4735
4736 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4737 nw64(RDC_TBL(this_table, slot),
4738 tbl->rxdma_channel[slot]);
4739 }
4740
4741 nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4742 }
4743
niu_init_drr_weight(struct niu * np)4744 static void niu_init_drr_weight(struct niu *np)
4745 {
4746 int type = phy_decode(np->parent->port_phy, np->port);
4747 u64 val;
4748
4749 switch (type) {
4750 case PORT_TYPE_10G:
4751 val = PT_DRR_WEIGHT_DEFAULT_10G;
4752 break;
4753
4754 case PORT_TYPE_1G:
4755 default:
4756 val = PT_DRR_WEIGHT_DEFAULT_1G;
4757 break;
4758 }
4759 nw64(PT_DRR_WT(np->port), val);
4760 }
4761
niu_init_hostinfo(struct niu * np)4762 static int niu_init_hostinfo(struct niu *np)
4763 {
4764 struct niu_parent *parent = np->parent;
4765 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4766 int i, err, num_alt = niu_num_alt_addr(np);
4767 int first_rdc_table = tp->first_table_num;
4768
4769 err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4770 if (err)
4771 return err;
4772
4773 err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4774 if (err)
4775 return err;
4776
4777 for (i = 0; i < num_alt; i++) {
4778 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4779 if (err)
4780 return err;
4781 }
4782
4783 return 0;
4784 }
4785
niu_rx_channel_reset(struct niu * np,int channel)4786 static int niu_rx_channel_reset(struct niu *np, int channel)
4787 {
4788 return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4789 RXDMA_CFIG1_RST, 1000, 10,
4790 "RXDMA_CFIG1");
4791 }
4792
niu_rx_channel_lpage_init(struct niu * np,int channel)4793 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4794 {
4795 u64 val;
4796
4797 nw64(RX_LOG_MASK1(channel), 0);
4798 nw64(RX_LOG_VAL1(channel), 0);
4799 nw64(RX_LOG_MASK2(channel), 0);
4800 nw64(RX_LOG_VAL2(channel), 0);
4801 nw64(RX_LOG_PAGE_RELO1(channel), 0);
4802 nw64(RX_LOG_PAGE_RELO2(channel), 0);
4803 nw64(RX_LOG_PAGE_HDL(channel), 0);
4804
4805 val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4806 val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4807 nw64(RX_LOG_PAGE_VLD(channel), val);
4808
4809 return 0;
4810 }
4811
niu_rx_channel_wred_init(struct niu * np,struct rx_ring_info * rp)4812 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4813 {
4814 u64 val;
4815
4816 val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4817 ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4818 ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4819 ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4820 nw64(RDC_RED_PARA(rp->rx_channel), val);
4821 }
4822
niu_compute_rbr_cfig_b(struct rx_ring_info * rp,u64 * ret)4823 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4824 {
4825 u64 val = 0;
4826
4827 *ret = 0;
4828 switch (rp->rbr_block_size) {
4829 case 4 * 1024:
4830 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4831 break;
4832 case 8 * 1024:
4833 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4834 break;
4835 case 16 * 1024:
4836 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4837 break;
4838 case 32 * 1024:
4839 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4840 break;
4841 default:
4842 return -EINVAL;
4843 }
4844 val |= RBR_CFIG_B_VLD2;
4845 switch (rp->rbr_sizes[2]) {
4846 case 2 * 1024:
4847 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4848 break;
4849 case 4 * 1024:
4850 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4851 break;
4852 case 8 * 1024:
4853 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4854 break;
4855 case 16 * 1024:
4856 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4857 break;
4858
4859 default:
4860 return -EINVAL;
4861 }
4862 val |= RBR_CFIG_B_VLD1;
4863 switch (rp->rbr_sizes[1]) {
4864 case 1 * 1024:
4865 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4866 break;
4867 case 2 * 1024:
4868 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4869 break;
4870 case 4 * 1024:
4871 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4872 break;
4873 case 8 * 1024:
4874 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4875 break;
4876
4877 default:
4878 return -EINVAL;
4879 }
4880 val |= RBR_CFIG_B_VLD0;
4881 switch (rp->rbr_sizes[0]) {
4882 case 256:
4883 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4884 break;
4885 case 512:
4886 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4887 break;
4888 case 1 * 1024:
4889 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4890 break;
4891 case 2 * 1024:
4892 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4893 break;
4894
4895 default:
4896 return -EINVAL;
4897 }
4898
4899 *ret = val;
4900 return 0;
4901 }
4902
niu_enable_rx_channel(struct niu * np,int channel,int on)4903 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4904 {
4905 u64 val = nr64(RXDMA_CFIG1(channel));
4906 int limit;
4907
4908 if (on)
4909 val |= RXDMA_CFIG1_EN;
4910 else
4911 val &= ~RXDMA_CFIG1_EN;
4912 nw64(RXDMA_CFIG1(channel), val);
4913
4914 limit = 1000;
4915 while (--limit > 0) {
4916 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4917 break;
4918 udelay(10);
4919 }
4920 if (limit <= 0)
4921 return -ENODEV;
4922 return 0;
4923 }
4924
niu_init_one_rx_channel(struct niu * np,struct rx_ring_info * rp)4925 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4926 {
4927 int err, channel = rp->rx_channel;
4928 u64 val;
4929
4930 err = niu_rx_channel_reset(np, channel);
4931 if (err)
4932 return err;
4933
4934 err = niu_rx_channel_lpage_init(np, channel);
4935 if (err)
4936 return err;
4937
4938 niu_rx_channel_wred_init(np, rp);
4939
4940 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4941 nw64(RX_DMA_CTL_STAT(channel),
4942 (RX_DMA_CTL_STAT_MEX |
4943 RX_DMA_CTL_STAT_RCRTHRES |
4944 RX_DMA_CTL_STAT_RCRTO |
4945 RX_DMA_CTL_STAT_RBR_EMPTY));
4946 nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4947 nw64(RXDMA_CFIG2(channel),
4948 ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4949 RXDMA_CFIG2_FULL_HDR));
4950 nw64(RBR_CFIG_A(channel),
4951 ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4952 (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4953 err = niu_compute_rbr_cfig_b(rp, &val);
4954 if (err)
4955 return err;
4956 nw64(RBR_CFIG_B(channel), val);
4957 nw64(RCRCFIG_A(channel),
4958 ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4959 (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4960 nw64(RCRCFIG_B(channel),
4961 ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4962 RCRCFIG_B_ENTOUT |
4963 ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4964
4965 err = niu_enable_rx_channel(np, channel, 1);
4966 if (err)
4967 return err;
4968
4969 nw64(RBR_KICK(channel), rp->rbr_index);
4970
4971 val = nr64(RX_DMA_CTL_STAT(channel));
4972 val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4973 nw64(RX_DMA_CTL_STAT(channel), val);
4974
4975 return 0;
4976 }
4977
niu_init_rx_channels(struct niu * np)4978 static int niu_init_rx_channels(struct niu *np)
4979 {
4980 unsigned long flags;
4981 u64 seed = jiffies_64;
4982 int err, i;
4983
4984 niu_lock_parent(np, flags);
4985 nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4986 nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4987 niu_unlock_parent(np, flags);
4988
4989 /* XXX RXDMA 32bit mode? XXX */
4990
4991 niu_init_rdc_groups(np);
4992 niu_init_drr_weight(np);
4993
4994 err = niu_init_hostinfo(np);
4995 if (err)
4996 return err;
4997
4998 for (i = 0; i < np->num_rx_rings; i++) {
4999 struct rx_ring_info *rp = &np->rx_rings[i];
5000
5001 err = niu_init_one_rx_channel(np, rp);
5002 if (err)
5003 return err;
5004 }
5005
5006 return 0;
5007 }
5008
niu_set_ip_frag_rule(struct niu * np)5009 static int niu_set_ip_frag_rule(struct niu *np)
5010 {
5011 struct niu_parent *parent = np->parent;
5012 struct niu_classifier *cp = &np->clas;
5013 struct niu_tcam_entry *tp;
5014 int index, err;
5015
5016 index = cp->tcam_top;
5017 tp = &parent->tcam[index];
5018
5019 /* Note that the noport bit is the same in both ipv4 and
5020 * ipv6 format TCAM entries.
5021 */
5022 memset(tp, 0, sizeof(*tp));
5023 tp->key[1] = TCAM_V4KEY1_NOPORT;
5024 tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5025 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5026 ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5027 err = tcam_write(np, index, tp->key, tp->key_mask);
5028 if (err)
5029 return err;
5030 err = tcam_assoc_write(np, index, tp->assoc_data);
5031 if (err)
5032 return err;
5033 tp->valid = 1;
5034 cp->tcam_valid_entries++;
5035
5036 return 0;
5037 }
5038
niu_init_classifier_hw(struct niu * np)5039 static int niu_init_classifier_hw(struct niu *np)
5040 {
5041 struct niu_parent *parent = np->parent;
5042 struct niu_classifier *cp = &np->clas;
5043 int i, err;
5044
5045 nw64(H1POLY, cp->h1_init);
5046 nw64(H2POLY, cp->h2_init);
5047
5048 err = niu_init_hostinfo(np);
5049 if (err)
5050 return err;
5051
5052 for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5053 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5054
5055 vlan_tbl_write(np, i, np->port,
5056 vp->vlan_pref, vp->rdc_num);
5057 }
5058
5059 for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5060 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5061
5062 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5063 ap->rdc_num, ap->mac_pref);
5064 if (err)
5065 return err;
5066 }
5067
5068 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5069 int index = i - CLASS_CODE_USER_PROG1;
5070
5071 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5072 if (err)
5073 return err;
5074 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5075 if (err)
5076 return err;
5077 }
5078
5079 err = niu_set_ip_frag_rule(np);
5080 if (err)
5081 return err;
5082
5083 tcam_enable(np, 1);
5084
5085 return 0;
5086 }
5087
niu_zcp_write(struct niu * np,int index,u64 * data)5088 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5089 {
5090 nw64(ZCP_RAM_DATA0, data[0]);
5091 nw64(ZCP_RAM_DATA1, data[1]);
5092 nw64(ZCP_RAM_DATA2, data[2]);
5093 nw64(ZCP_RAM_DATA3, data[3]);
5094 nw64(ZCP_RAM_DATA4, data[4]);
5095 nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5096 nw64(ZCP_RAM_ACC,
5097 (ZCP_RAM_ACC_WRITE |
5098 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5099 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5100
5101 return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5102 1000, 100);
5103 }
5104
niu_zcp_read(struct niu * np,int index,u64 * data)5105 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5106 {
5107 int err;
5108
5109 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5110 1000, 100);
5111 if (err) {
5112 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5113 (unsigned long long)nr64(ZCP_RAM_ACC));
5114 return err;
5115 }
5116
5117 nw64(ZCP_RAM_ACC,
5118 (ZCP_RAM_ACC_READ |
5119 (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5120 (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5121
5122 err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5123 1000, 100);
5124 if (err) {
5125 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5126 (unsigned long long)nr64(ZCP_RAM_ACC));
5127 return err;
5128 }
5129
5130 data[0] = nr64(ZCP_RAM_DATA0);
5131 data[1] = nr64(ZCP_RAM_DATA1);
5132 data[2] = nr64(ZCP_RAM_DATA2);
5133 data[3] = nr64(ZCP_RAM_DATA3);
5134 data[4] = nr64(ZCP_RAM_DATA4);
5135
5136 return 0;
5137 }
5138
niu_zcp_cfifo_reset(struct niu * np)5139 static void niu_zcp_cfifo_reset(struct niu *np)
5140 {
5141 u64 val = nr64(RESET_CFIFO);
5142
5143 val |= RESET_CFIFO_RST(np->port);
5144 nw64(RESET_CFIFO, val);
5145 udelay(10);
5146
5147 val &= ~RESET_CFIFO_RST(np->port);
5148 nw64(RESET_CFIFO, val);
5149 }
5150
niu_init_zcp(struct niu * np)5151 static int niu_init_zcp(struct niu *np)
5152 {
5153 u64 data[5], rbuf[5];
5154 int i, max, err;
5155
5156 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5157 if (np->port == 0 || np->port == 1)
5158 max = ATLAS_P0_P1_CFIFO_ENTRIES;
5159 else
5160 max = ATLAS_P2_P3_CFIFO_ENTRIES;
5161 } else
5162 max = NIU_CFIFO_ENTRIES;
5163
5164 data[0] = 0;
5165 data[1] = 0;
5166 data[2] = 0;
5167 data[3] = 0;
5168 data[4] = 0;
5169
5170 for (i = 0; i < max; i++) {
5171 err = niu_zcp_write(np, i, data);
5172 if (err)
5173 return err;
5174 err = niu_zcp_read(np, i, rbuf);
5175 if (err)
5176 return err;
5177 }
5178
5179 niu_zcp_cfifo_reset(np);
5180 nw64(CFIFO_ECC(np->port), 0);
5181 nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5182 (void) nr64(ZCP_INT_STAT);
5183 nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5184
5185 return 0;
5186 }
5187
niu_ipp_write(struct niu * np,int index,u64 * data)5188 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5189 {
5190 u64 val = nr64_ipp(IPP_CFIG);
5191
5192 nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5193 nw64_ipp(IPP_DFIFO_WR_PTR, index);
5194 nw64_ipp(IPP_DFIFO_WR0, data[0]);
5195 nw64_ipp(IPP_DFIFO_WR1, data[1]);
5196 nw64_ipp(IPP_DFIFO_WR2, data[2]);
5197 nw64_ipp(IPP_DFIFO_WR3, data[3]);
5198 nw64_ipp(IPP_DFIFO_WR4, data[4]);
5199 nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5200 }
5201
niu_ipp_read(struct niu * np,int index,u64 * data)5202 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5203 {
5204 nw64_ipp(IPP_DFIFO_RD_PTR, index);
5205 data[0] = nr64_ipp(IPP_DFIFO_RD0);
5206 data[1] = nr64_ipp(IPP_DFIFO_RD1);
5207 data[2] = nr64_ipp(IPP_DFIFO_RD2);
5208 data[3] = nr64_ipp(IPP_DFIFO_RD3);
5209 data[4] = nr64_ipp(IPP_DFIFO_RD4);
5210 }
5211
niu_ipp_reset(struct niu * np)5212 static int niu_ipp_reset(struct niu *np)
5213 {
5214 return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5215 1000, 100, "IPP_CFIG");
5216 }
5217
niu_init_ipp(struct niu * np)5218 static int niu_init_ipp(struct niu *np)
5219 {
5220 u64 data[5], rbuf[5], val;
5221 int i, max, err;
5222
5223 if (np->parent->plat_type != PLAT_TYPE_NIU) {
5224 if (np->port == 0 || np->port == 1)
5225 max = ATLAS_P0_P1_DFIFO_ENTRIES;
5226 else
5227 max = ATLAS_P2_P3_DFIFO_ENTRIES;
5228 } else
5229 max = NIU_DFIFO_ENTRIES;
5230
5231 data[0] = 0;
5232 data[1] = 0;
5233 data[2] = 0;
5234 data[3] = 0;
5235 data[4] = 0;
5236
5237 for (i = 0; i < max; i++) {
5238 niu_ipp_write(np, i, data);
5239 niu_ipp_read(np, i, rbuf);
5240 }
5241
5242 (void) nr64_ipp(IPP_INT_STAT);
5243 (void) nr64_ipp(IPP_INT_STAT);
5244
5245 err = niu_ipp_reset(np);
5246 if (err)
5247 return err;
5248
5249 (void) nr64_ipp(IPP_PKT_DIS);
5250 (void) nr64_ipp(IPP_BAD_CS_CNT);
5251 (void) nr64_ipp(IPP_ECC);
5252
5253 (void) nr64_ipp(IPP_INT_STAT);
5254
5255 nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5256
5257 val = nr64_ipp(IPP_CFIG);
5258 val &= ~IPP_CFIG_IP_MAX_PKT;
5259 val |= (IPP_CFIG_IPP_ENABLE |
5260 IPP_CFIG_DFIFO_ECC_EN |
5261 IPP_CFIG_DROP_BAD_CRC |
5262 IPP_CFIG_CKSUM_EN |
5263 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5264 nw64_ipp(IPP_CFIG, val);
5265
5266 return 0;
5267 }
5268
niu_handle_led(struct niu * np,int status)5269 static void niu_handle_led(struct niu *np, int status)
5270 {
5271 u64 val;
5272 val = nr64_mac(XMAC_CONFIG);
5273
5274 if ((np->flags & NIU_FLAGS_10G) != 0 &&
5275 (np->flags & NIU_FLAGS_FIBER) != 0) {
5276 if (status) {
5277 val |= XMAC_CONFIG_LED_POLARITY;
5278 val &= ~XMAC_CONFIG_FORCE_LED_ON;
5279 } else {
5280 val |= XMAC_CONFIG_FORCE_LED_ON;
5281 val &= ~XMAC_CONFIG_LED_POLARITY;
5282 }
5283 }
5284
5285 nw64_mac(XMAC_CONFIG, val);
5286 }
5287
niu_init_xif_xmac(struct niu * np)5288 static void niu_init_xif_xmac(struct niu *np)
5289 {
5290 struct niu_link_config *lp = &np->link_config;
5291 u64 val;
5292
5293 if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5294 val = nr64(MIF_CONFIG);
5295 val |= MIF_CONFIG_ATCA_GE;
5296 nw64(MIF_CONFIG, val);
5297 }
5298
5299 val = nr64_mac(XMAC_CONFIG);
5300 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5301
5302 val |= XMAC_CONFIG_TX_OUTPUT_EN;
5303
5304 if (lp->loopback_mode == LOOPBACK_MAC) {
5305 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5306 val |= XMAC_CONFIG_LOOPBACK;
5307 } else {
5308 val &= ~XMAC_CONFIG_LOOPBACK;
5309 }
5310
5311 if (np->flags & NIU_FLAGS_10G) {
5312 val &= ~XMAC_CONFIG_LFS_DISABLE;
5313 } else {
5314 val |= XMAC_CONFIG_LFS_DISABLE;
5315 if (!(np->flags & NIU_FLAGS_FIBER) &&
5316 !(np->flags & NIU_FLAGS_XCVR_SERDES))
5317 val |= XMAC_CONFIG_1G_PCS_BYPASS;
5318 else
5319 val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5320 }
5321
5322 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5323
5324 if (lp->active_speed == SPEED_100)
5325 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5326 else
5327 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5328
5329 nw64_mac(XMAC_CONFIG, val);
5330
5331 val = nr64_mac(XMAC_CONFIG);
5332 val &= ~XMAC_CONFIG_MODE_MASK;
5333 if (np->flags & NIU_FLAGS_10G) {
5334 val |= XMAC_CONFIG_MODE_XGMII;
5335 } else {
5336 if (lp->active_speed == SPEED_1000)
5337 val |= XMAC_CONFIG_MODE_GMII;
5338 else
5339 val |= XMAC_CONFIG_MODE_MII;
5340 }
5341
5342 nw64_mac(XMAC_CONFIG, val);
5343 }
5344
niu_init_xif_bmac(struct niu * np)5345 static void niu_init_xif_bmac(struct niu *np)
5346 {
5347 struct niu_link_config *lp = &np->link_config;
5348 u64 val;
5349
5350 val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5351
5352 if (lp->loopback_mode == LOOPBACK_MAC)
5353 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5354 else
5355 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5356
5357 if (lp->active_speed == SPEED_1000)
5358 val |= BMAC_XIF_CONFIG_GMII_MODE;
5359 else
5360 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5361
5362 val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5363 BMAC_XIF_CONFIG_LED_POLARITY);
5364
5365 if (!(np->flags & NIU_FLAGS_10G) &&
5366 !(np->flags & NIU_FLAGS_FIBER) &&
5367 lp->active_speed == SPEED_100)
5368 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5369 else
5370 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5371
5372 nw64_mac(BMAC_XIF_CONFIG, val);
5373 }
5374
niu_init_xif(struct niu * np)5375 static void niu_init_xif(struct niu *np)
5376 {
5377 if (np->flags & NIU_FLAGS_XMAC)
5378 niu_init_xif_xmac(np);
5379 else
5380 niu_init_xif_bmac(np);
5381 }
5382
niu_pcs_mii_reset(struct niu * np)5383 static void niu_pcs_mii_reset(struct niu *np)
5384 {
5385 int limit = 1000;
5386 u64 val = nr64_pcs(PCS_MII_CTL);
5387 val |= PCS_MII_CTL_RST;
5388 nw64_pcs(PCS_MII_CTL, val);
5389 while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5390 udelay(100);
5391 val = nr64_pcs(PCS_MII_CTL);
5392 }
5393 }
5394
niu_xpcs_reset(struct niu * np)5395 static void niu_xpcs_reset(struct niu *np)
5396 {
5397 int limit = 1000;
5398 u64 val = nr64_xpcs(XPCS_CONTROL1);
5399 val |= XPCS_CONTROL1_RESET;
5400 nw64_xpcs(XPCS_CONTROL1, val);
5401 while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5402 udelay(100);
5403 val = nr64_xpcs(XPCS_CONTROL1);
5404 }
5405 }
5406
niu_init_pcs(struct niu * np)5407 static int niu_init_pcs(struct niu *np)
5408 {
5409 struct niu_link_config *lp = &np->link_config;
5410 u64 val;
5411
5412 switch (np->flags & (NIU_FLAGS_10G |
5413 NIU_FLAGS_FIBER |
5414 NIU_FLAGS_XCVR_SERDES)) {
5415 case NIU_FLAGS_FIBER:
5416 /* 1G fiber */
5417 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5418 nw64_pcs(PCS_DPATH_MODE, 0);
5419 niu_pcs_mii_reset(np);
5420 break;
5421
5422 case NIU_FLAGS_10G:
5423 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5424 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5425 /* 10G SERDES */
5426 if (!(np->flags & NIU_FLAGS_XMAC))
5427 return -EINVAL;
5428
5429 /* 10G copper or fiber */
5430 val = nr64_mac(XMAC_CONFIG);
5431 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5432 nw64_mac(XMAC_CONFIG, val);
5433
5434 niu_xpcs_reset(np);
5435
5436 val = nr64_xpcs(XPCS_CONTROL1);
5437 if (lp->loopback_mode == LOOPBACK_PHY)
5438 val |= XPCS_CONTROL1_LOOPBACK;
5439 else
5440 val &= ~XPCS_CONTROL1_LOOPBACK;
5441 nw64_xpcs(XPCS_CONTROL1, val);
5442
5443 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5444 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5445 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5446 break;
5447
5448
5449 case NIU_FLAGS_XCVR_SERDES:
5450 /* 1G SERDES */
5451 niu_pcs_mii_reset(np);
5452 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5453 nw64_pcs(PCS_DPATH_MODE, 0);
5454 break;
5455
5456 case 0:
5457 /* 1G copper */
5458 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5459 /* 1G RGMII FIBER */
5460 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5461 niu_pcs_mii_reset(np);
5462 break;
5463
5464 default:
5465 return -EINVAL;
5466 }
5467
5468 return 0;
5469 }
5470
niu_reset_tx_xmac(struct niu * np)5471 static int niu_reset_tx_xmac(struct niu *np)
5472 {
5473 return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5474 (XTXMAC_SW_RST_REG_RS |
5475 XTXMAC_SW_RST_SOFT_RST),
5476 1000, 100, "XTXMAC_SW_RST");
5477 }
5478
niu_reset_tx_bmac(struct niu * np)5479 static int niu_reset_tx_bmac(struct niu *np)
5480 {
5481 int limit;
5482
5483 nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5484 limit = 1000;
5485 while (--limit >= 0) {
5486 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5487 break;
5488 udelay(100);
5489 }
5490 if (limit < 0) {
5491 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5492 np->port,
5493 (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5494 return -ENODEV;
5495 }
5496
5497 return 0;
5498 }
5499
niu_reset_tx_mac(struct niu * np)5500 static int niu_reset_tx_mac(struct niu *np)
5501 {
5502 if (np->flags & NIU_FLAGS_XMAC)
5503 return niu_reset_tx_xmac(np);
5504 else
5505 return niu_reset_tx_bmac(np);
5506 }
5507
niu_init_tx_xmac(struct niu * np,u64 min,u64 max)5508 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5509 {
5510 u64 val;
5511
5512 val = nr64_mac(XMAC_MIN);
5513 val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5514 XMAC_MIN_RX_MIN_PKT_SIZE);
5515 val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5516 val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5517 nw64_mac(XMAC_MIN, val);
5518
5519 nw64_mac(XMAC_MAX, max);
5520
5521 nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5522
5523 val = nr64_mac(XMAC_IPG);
5524 if (np->flags & NIU_FLAGS_10G) {
5525 val &= ~XMAC_IPG_IPG_XGMII;
5526 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5527 } else {
5528 val &= ~XMAC_IPG_IPG_MII_GMII;
5529 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5530 }
5531 nw64_mac(XMAC_IPG, val);
5532
5533 val = nr64_mac(XMAC_CONFIG);
5534 val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5535 XMAC_CONFIG_STRETCH_MODE |
5536 XMAC_CONFIG_VAR_MIN_IPG_EN |
5537 XMAC_CONFIG_TX_ENABLE);
5538 nw64_mac(XMAC_CONFIG, val);
5539
5540 nw64_mac(TXMAC_FRM_CNT, 0);
5541 nw64_mac(TXMAC_BYTE_CNT, 0);
5542 }
5543
niu_init_tx_bmac(struct niu * np,u64 min,u64 max)5544 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5545 {
5546 u64 val;
5547
5548 nw64_mac(BMAC_MIN_FRAME, min);
5549 nw64_mac(BMAC_MAX_FRAME, max);
5550
5551 nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5552 nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5553 nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5554
5555 val = nr64_mac(BTXMAC_CONFIG);
5556 val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5557 BTXMAC_CONFIG_ENABLE);
5558 nw64_mac(BTXMAC_CONFIG, val);
5559 }
5560
niu_init_tx_mac(struct niu * np)5561 static void niu_init_tx_mac(struct niu *np)
5562 {
5563 u64 min, max;
5564
5565 min = 64;
5566 if (np->dev->mtu > ETH_DATA_LEN)
5567 max = 9216;
5568 else
5569 max = 1522;
5570
5571 /* The XMAC_MIN register only accepts values for TX min which
5572 * have the low 3 bits cleared.
5573 */
5574 BUG_ON(min & 0x7);
5575
5576 if (np->flags & NIU_FLAGS_XMAC)
5577 niu_init_tx_xmac(np, min, max);
5578 else
5579 niu_init_tx_bmac(np, min, max);
5580 }
5581
niu_reset_rx_xmac(struct niu * np)5582 static int niu_reset_rx_xmac(struct niu *np)
5583 {
5584 int limit;
5585
5586 nw64_mac(XRXMAC_SW_RST,
5587 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5588 limit = 1000;
5589 while (--limit >= 0) {
5590 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5591 XRXMAC_SW_RST_SOFT_RST)))
5592 break;
5593 udelay(100);
5594 }
5595 if (limit < 0) {
5596 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5597 np->port,
5598 (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5599 return -ENODEV;
5600 }
5601
5602 return 0;
5603 }
5604
niu_reset_rx_bmac(struct niu * np)5605 static int niu_reset_rx_bmac(struct niu *np)
5606 {
5607 int limit;
5608
5609 nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5610 limit = 1000;
5611 while (--limit >= 0) {
5612 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5613 break;
5614 udelay(100);
5615 }
5616 if (limit < 0) {
5617 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5618 np->port,
5619 (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5620 return -ENODEV;
5621 }
5622
5623 return 0;
5624 }
5625
niu_reset_rx_mac(struct niu * np)5626 static int niu_reset_rx_mac(struct niu *np)
5627 {
5628 if (np->flags & NIU_FLAGS_XMAC)
5629 return niu_reset_rx_xmac(np);
5630 else
5631 return niu_reset_rx_bmac(np);
5632 }
5633
niu_init_rx_xmac(struct niu * np)5634 static void niu_init_rx_xmac(struct niu *np)
5635 {
5636 struct niu_parent *parent = np->parent;
5637 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5638 int first_rdc_table = tp->first_table_num;
5639 unsigned long i;
5640 u64 val;
5641
5642 nw64_mac(XMAC_ADD_FILT0, 0);
5643 nw64_mac(XMAC_ADD_FILT1, 0);
5644 nw64_mac(XMAC_ADD_FILT2, 0);
5645 nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5646 nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5647 for (i = 0; i < MAC_NUM_HASH; i++)
5648 nw64_mac(XMAC_HASH_TBL(i), 0);
5649 nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5650 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5651 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5652
5653 val = nr64_mac(XMAC_CONFIG);
5654 val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5655 XMAC_CONFIG_PROMISCUOUS |
5656 XMAC_CONFIG_PROMISC_GROUP |
5657 XMAC_CONFIG_ERR_CHK_DIS |
5658 XMAC_CONFIG_RX_CRC_CHK_DIS |
5659 XMAC_CONFIG_RESERVED_MULTICAST |
5660 XMAC_CONFIG_RX_CODEV_CHK_DIS |
5661 XMAC_CONFIG_ADDR_FILTER_EN |
5662 XMAC_CONFIG_RCV_PAUSE_ENABLE |
5663 XMAC_CONFIG_STRIP_CRC |
5664 XMAC_CONFIG_PASS_FLOW_CTRL |
5665 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5666 val |= (XMAC_CONFIG_HASH_FILTER_EN);
5667 nw64_mac(XMAC_CONFIG, val);
5668
5669 nw64_mac(RXMAC_BT_CNT, 0);
5670 nw64_mac(RXMAC_BC_FRM_CNT, 0);
5671 nw64_mac(RXMAC_MC_FRM_CNT, 0);
5672 nw64_mac(RXMAC_FRAG_CNT, 0);
5673 nw64_mac(RXMAC_HIST_CNT1, 0);
5674 nw64_mac(RXMAC_HIST_CNT2, 0);
5675 nw64_mac(RXMAC_HIST_CNT3, 0);
5676 nw64_mac(RXMAC_HIST_CNT4, 0);
5677 nw64_mac(RXMAC_HIST_CNT5, 0);
5678 nw64_mac(RXMAC_HIST_CNT6, 0);
5679 nw64_mac(RXMAC_HIST_CNT7, 0);
5680 nw64_mac(RXMAC_MPSZER_CNT, 0);
5681 nw64_mac(RXMAC_CRC_ER_CNT, 0);
5682 nw64_mac(RXMAC_CD_VIO_CNT, 0);
5683 nw64_mac(LINK_FAULT_CNT, 0);
5684 }
5685
niu_init_rx_bmac(struct niu * np)5686 static void niu_init_rx_bmac(struct niu *np)
5687 {
5688 struct niu_parent *parent = np->parent;
5689 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5690 int first_rdc_table = tp->first_table_num;
5691 unsigned long i;
5692 u64 val;
5693
5694 nw64_mac(BMAC_ADD_FILT0, 0);
5695 nw64_mac(BMAC_ADD_FILT1, 0);
5696 nw64_mac(BMAC_ADD_FILT2, 0);
5697 nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5698 nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5699 for (i = 0; i < MAC_NUM_HASH; i++)
5700 nw64_mac(BMAC_HASH_TBL(i), 0);
5701 niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5702 niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5703 nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5704
5705 val = nr64_mac(BRXMAC_CONFIG);
5706 val &= ~(BRXMAC_CONFIG_ENABLE |
5707 BRXMAC_CONFIG_STRIP_PAD |
5708 BRXMAC_CONFIG_STRIP_FCS |
5709 BRXMAC_CONFIG_PROMISC |
5710 BRXMAC_CONFIG_PROMISC_GRP |
5711 BRXMAC_CONFIG_ADDR_FILT_EN |
5712 BRXMAC_CONFIG_DISCARD_DIS);
5713 val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5714 nw64_mac(BRXMAC_CONFIG, val);
5715
5716 val = nr64_mac(BMAC_ADDR_CMPEN);
5717 val |= BMAC_ADDR_CMPEN_EN0;
5718 nw64_mac(BMAC_ADDR_CMPEN, val);
5719 }
5720
niu_init_rx_mac(struct niu * np)5721 static void niu_init_rx_mac(struct niu *np)
5722 {
5723 niu_set_primary_mac(np, np->dev->dev_addr);
5724
5725 if (np->flags & NIU_FLAGS_XMAC)
5726 niu_init_rx_xmac(np);
5727 else
5728 niu_init_rx_bmac(np);
5729 }
5730
niu_enable_tx_xmac(struct niu * np,int on)5731 static void niu_enable_tx_xmac(struct niu *np, int on)
5732 {
5733 u64 val = nr64_mac(XMAC_CONFIG);
5734
5735 if (on)
5736 val |= XMAC_CONFIG_TX_ENABLE;
5737 else
5738 val &= ~XMAC_CONFIG_TX_ENABLE;
5739 nw64_mac(XMAC_CONFIG, val);
5740 }
5741
niu_enable_tx_bmac(struct niu * np,int on)5742 static void niu_enable_tx_bmac(struct niu *np, int on)
5743 {
5744 u64 val = nr64_mac(BTXMAC_CONFIG);
5745
5746 if (on)
5747 val |= BTXMAC_CONFIG_ENABLE;
5748 else
5749 val &= ~BTXMAC_CONFIG_ENABLE;
5750 nw64_mac(BTXMAC_CONFIG, val);
5751 }
5752
niu_enable_tx_mac(struct niu * np,int on)5753 static void niu_enable_tx_mac(struct niu *np, int on)
5754 {
5755 if (np->flags & NIU_FLAGS_XMAC)
5756 niu_enable_tx_xmac(np, on);
5757 else
5758 niu_enable_tx_bmac(np, on);
5759 }
5760
niu_enable_rx_xmac(struct niu * np,int on)5761 static void niu_enable_rx_xmac(struct niu *np, int on)
5762 {
5763 u64 val = nr64_mac(XMAC_CONFIG);
5764
5765 val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5766 XMAC_CONFIG_PROMISCUOUS);
5767
5768 if (np->flags & NIU_FLAGS_MCAST)
5769 val |= XMAC_CONFIG_HASH_FILTER_EN;
5770 if (np->flags & NIU_FLAGS_PROMISC)
5771 val |= XMAC_CONFIG_PROMISCUOUS;
5772
5773 if (on)
5774 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5775 else
5776 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5777 nw64_mac(XMAC_CONFIG, val);
5778 }
5779
niu_enable_rx_bmac(struct niu * np,int on)5780 static void niu_enable_rx_bmac(struct niu *np, int on)
5781 {
5782 u64 val = nr64_mac(BRXMAC_CONFIG);
5783
5784 val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5785 BRXMAC_CONFIG_PROMISC);
5786
5787 if (np->flags & NIU_FLAGS_MCAST)
5788 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5789 if (np->flags & NIU_FLAGS_PROMISC)
5790 val |= BRXMAC_CONFIG_PROMISC;
5791
5792 if (on)
5793 val |= BRXMAC_CONFIG_ENABLE;
5794 else
5795 val &= ~BRXMAC_CONFIG_ENABLE;
5796 nw64_mac(BRXMAC_CONFIG, val);
5797 }
5798
niu_enable_rx_mac(struct niu * np,int on)5799 static void niu_enable_rx_mac(struct niu *np, int on)
5800 {
5801 if (np->flags & NIU_FLAGS_XMAC)
5802 niu_enable_rx_xmac(np, on);
5803 else
5804 niu_enable_rx_bmac(np, on);
5805 }
5806
niu_init_mac(struct niu * np)5807 static int niu_init_mac(struct niu *np)
5808 {
5809 int err;
5810
5811 niu_init_xif(np);
5812 err = niu_init_pcs(np);
5813 if (err)
5814 return err;
5815
5816 err = niu_reset_tx_mac(np);
5817 if (err)
5818 return err;
5819 niu_init_tx_mac(np);
5820 err = niu_reset_rx_mac(np);
5821 if (err)
5822 return err;
5823 niu_init_rx_mac(np);
5824
5825 /* This looks hookey but the RX MAC reset we just did will
5826 * undo some of the state we setup in niu_init_tx_mac() so we
5827 * have to call it again. In particular, the RX MAC reset will
5828 * set the XMAC_MAX register back to it's default value.
5829 */
5830 niu_init_tx_mac(np);
5831 niu_enable_tx_mac(np, 1);
5832
5833 niu_enable_rx_mac(np, 1);
5834
5835 return 0;
5836 }
5837
niu_stop_one_tx_channel(struct niu * np,struct tx_ring_info * rp)5838 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5839 {
5840 (void) niu_tx_channel_stop(np, rp->tx_channel);
5841 }
5842
niu_stop_tx_channels(struct niu * np)5843 static void niu_stop_tx_channels(struct niu *np)
5844 {
5845 int i;
5846
5847 for (i = 0; i < np->num_tx_rings; i++) {
5848 struct tx_ring_info *rp = &np->tx_rings[i];
5849
5850 niu_stop_one_tx_channel(np, rp);
5851 }
5852 }
5853
niu_reset_one_tx_channel(struct niu * np,struct tx_ring_info * rp)5854 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5855 {
5856 (void) niu_tx_channel_reset(np, rp->tx_channel);
5857 }
5858
niu_reset_tx_channels(struct niu * np)5859 static void niu_reset_tx_channels(struct niu *np)
5860 {
5861 int i;
5862
5863 for (i = 0; i < np->num_tx_rings; i++) {
5864 struct tx_ring_info *rp = &np->tx_rings[i];
5865
5866 niu_reset_one_tx_channel(np, rp);
5867 }
5868 }
5869
niu_stop_one_rx_channel(struct niu * np,struct rx_ring_info * rp)5870 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5871 {
5872 (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5873 }
5874
niu_stop_rx_channels(struct niu * np)5875 static void niu_stop_rx_channels(struct niu *np)
5876 {
5877 int i;
5878
5879 for (i = 0; i < np->num_rx_rings; i++) {
5880 struct rx_ring_info *rp = &np->rx_rings[i];
5881
5882 niu_stop_one_rx_channel(np, rp);
5883 }
5884 }
5885
niu_reset_one_rx_channel(struct niu * np,struct rx_ring_info * rp)5886 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5887 {
5888 int channel = rp->rx_channel;
5889
5890 (void) niu_rx_channel_reset(np, channel);
5891 nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5892 nw64(RX_DMA_CTL_STAT(channel), 0);
5893 (void) niu_enable_rx_channel(np, channel, 0);
5894 }
5895
niu_reset_rx_channels(struct niu * np)5896 static void niu_reset_rx_channels(struct niu *np)
5897 {
5898 int i;
5899
5900 for (i = 0; i < np->num_rx_rings; i++) {
5901 struct rx_ring_info *rp = &np->rx_rings[i];
5902
5903 niu_reset_one_rx_channel(np, rp);
5904 }
5905 }
5906
niu_disable_ipp(struct niu * np)5907 static void niu_disable_ipp(struct niu *np)
5908 {
5909 u64 rd, wr, val;
5910 int limit;
5911
5912 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5913 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5914 limit = 100;
5915 while (--limit >= 0 && (rd != wr)) {
5916 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5917 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5918 }
5919 if (limit < 0 &&
5920 (rd != 0 && wr != 1)) {
5921 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5922 (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5923 (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5924 }
5925
5926 val = nr64_ipp(IPP_CFIG);
5927 val &= ~(IPP_CFIG_IPP_ENABLE |
5928 IPP_CFIG_DFIFO_ECC_EN |
5929 IPP_CFIG_DROP_BAD_CRC |
5930 IPP_CFIG_CKSUM_EN);
5931 nw64_ipp(IPP_CFIG, val);
5932
5933 (void) niu_ipp_reset(np);
5934 }
5935
niu_init_hw(struct niu * np)5936 static int niu_init_hw(struct niu *np)
5937 {
5938 int i, err;
5939
5940 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5941 niu_txc_enable_port(np, 1);
5942 niu_txc_port_dma_enable(np, 1);
5943 niu_txc_set_imask(np, 0);
5944
5945 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5946 for (i = 0; i < np->num_tx_rings; i++) {
5947 struct tx_ring_info *rp = &np->tx_rings[i];
5948
5949 err = niu_init_one_tx_channel(np, rp);
5950 if (err)
5951 return err;
5952 }
5953
5954 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5955 err = niu_init_rx_channels(np);
5956 if (err)
5957 goto out_uninit_tx_channels;
5958
5959 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5960 err = niu_init_classifier_hw(np);
5961 if (err)
5962 goto out_uninit_rx_channels;
5963
5964 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5965 err = niu_init_zcp(np);
5966 if (err)
5967 goto out_uninit_rx_channels;
5968
5969 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5970 err = niu_init_ipp(np);
5971 if (err)
5972 goto out_uninit_rx_channels;
5973
5974 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5975 err = niu_init_mac(np);
5976 if (err)
5977 goto out_uninit_ipp;
5978
5979 return 0;
5980
5981 out_uninit_ipp:
5982 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5983 niu_disable_ipp(np);
5984
5985 out_uninit_rx_channels:
5986 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5987 niu_stop_rx_channels(np);
5988 niu_reset_rx_channels(np);
5989
5990 out_uninit_tx_channels:
5991 netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5992 niu_stop_tx_channels(np);
5993 niu_reset_tx_channels(np);
5994
5995 return err;
5996 }
5997
niu_stop_hw(struct niu * np)5998 static void niu_stop_hw(struct niu *np)
5999 {
6000 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6001 niu_enable_interrupts(np, 0);
6002
6003 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6004 niu_enable_rx_mac(np, 0);
6005
6006 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6007 niu_disable_ipp(np);
6008
6009 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6010 niu_stop_tx_channels(np);
6011
6012 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6013 niu_stop_rx_channels(np);
6014
6015 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6016 niu_reset_tx_channels(np);
6017
6018 netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6019 niu_reset_rx_channels(np);
6020 }
6021
niu_set_irq_name(struct niu * np)6022 static void niu_set_irq_name(struct niu *np)
6023 {
6024 int port = np->port;
6025 int i, j = 1;
6026
6027 sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6028
6029 if (port == 0) {
6030 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6031 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6032 j = 3;
6033 }
6034
6035 for (i = 0; i < np->num_ldg - j; i++) {
6036 if (i < np->num_rx_rings)
6037 sprintf(np->irq_name[i+j], "%s-rx-%d",
6038 np->dev->name, i);
6039 else if (i < np->num_tx_rings + np->num_rx_rings)
6040 sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6041 i - np->num_rx_rings);
6042 }
6043 }
6044
niu_request_irq(struct niu * np)6045 static int niu_request_irq(struct niu *np)
6046 {
6047 int i, j, err;
6048
6049 niu_set_irq_name(np);
6050
6051 err = 0;
6052 for (i = 0; i < np->num_ldg; i++) {
6053 struct niu_ldg *lp = &np->ldg[i];
6054
6055 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6056 np->irq_name[i], lp);
6057 if (err)
6058 goto out_free_irqs;
6059
6060 }
6061
6062 return 0;
6063
6064 out_free_irqs:
6065 for (j = 0; j < i; j++) {
6066 struct niu_ldg *lp = &np->ldg[j];
6067
6068 free_irq(lp->irq, lp);
6069 }
6070 return err;
6071 }
6072
niu_free_irq(struct niu * np)6073 static void niu_free_irq(struct niu *np)
6074 {
6075 int i;
6076
6077 for (i = 0; i < np->num_ldg; i++) {
6078 struct niu_ldg *lp = &np->ldg[i];
6079
6080 free_irq(lp->irq, lp);
6081 }
6082 }
6083
niu_enable_napi(struct niu * np)6084 static void niu_enable_napi(struct niu *np)
6085 {
6086 int i;
6087
6088 for (i = 0; i < np->num_ldg; i++)
6089 napi_enable(&np->ldg[i].napi);
6090 }
6091
niu_disable_napi(struct niu * np)6092 static void niu_disable_napi(struct niu *np)
6093 {
6094 int i;
6095
6096 for (i = 0; i < np->num_ldg; i++)
6097 napi_disable(&np->ldg[i].napi);
6098 }
6099
niu_open(struct net_device * dev)6100 static int niu_open(struct net_device *dev)
6101 {
6102 struct niu *np = netdev_priv(dev);
6103 int err;
6104
6105 netif_carrier_off(dev);
6106
6107 err = niu_alloc_channels(np);
6108 if (err)
6109 goto out_err;
6110
6111 err = niu_enable_interrupts(np, 0);
6112 if (err)
6113 goto out_free_channels;
6114
6115 err = niu_request_irq(np);
6116 if (err)
6117 goto out_free_channels;
6118
6119 niu_enable_napi(np);
6120
6121 spin_lock_irq(&np->lock);
6122
6123 err = niu_init_hw(np);
6124 if (!err) {
6125 timer_setup(&np->timer, niu_timer, 0);
6126 np->timer.expires = jiffies + HZ;
6127
6128 err = niu_enable_interrupts(np, 1);
6129 if (err)
6130 niu_stop_hw(np);
6131 }
6132
6133 spin_unlock_irq(&np->lock);
6134
6135 if (err) {
6136 niu_disable_napi(np);
6137 goto out_free_irq;
6138 }
6139
6140 netif_tx_start_all_queues(dev);
6141
6142 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6143 netif_carrier_on(dev);
6144
6145 add_timer(&np->timer);
6146
6147 return 0;
6148
6149 out_free_irq:
6150 niu_free_irq(np);
6151
6152 out_free_channels:
6153 niu_free_channels(np);
6154
6155 out_err:
6156 return err;
6157 }
6158
niu_full_shutdown(struct niu * np,struct net_device * dev)6159 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6160 {
6161 cancel_work_sync(&np->reset_task);
6162
6163 niu_disable_napi(np);
6164 netif_tx_stop_all_queues(dev);
6165
6166 del_timer_sync(&np->timer);
6167
6168 spin_lock_irq(&np->lock);
6169
6170 niu_stop_hw(np);
6171
6172 spin_unlock_irq(&np->lock);
6173 }
6174
niu_close(struct net_device * dev)6175 static int niu_close(struct net_device *dev)
6176 {
6177 struct niu *np = netdev_priv(dev);
6178
6179 niu_full_shutdown(np, dev);
6180
6181 niu_free_irq(np);
6182
6183 niu_free_channels(np);
6184
6185 niu_handle_led(np, 0);
6186
6187 return 0;
6188 }
6189
niu_sync_xmac_stats(struct niu * np)6190 static void niu_sync_xmac_stats(struct niu *np)
6191 {
6192 struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6193
6194 mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6195 mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6196
6197 mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6198 mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6199 mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6200 mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6201 mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6202 mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6203 mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6204 mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6205 mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6206 mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6207 mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6208 mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6209 mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6210 mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6211 mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6212 mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6213 }
6214
niu_sync_bmac_stats(struct niu * np)6215 static void niu_sync_bmac_stats(struct niu *np)
6216 {
6217 struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6218
6219 mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6220 mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6221
6222 mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6223 mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6224 mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6225 mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6226 }
6227
niu_sync_mac_stats(struct niu * np)6228 static void niu_sync_mac_stats(struct niu *np)
6229 {
6230 if (np->flags & NIU_FLAGS_XMAC)
6231 niu_sync_xmac_stats(np);
6232 else
6233 niu_sync_bmac_stats(np);
6234 }
6235
niu_get_rx_stats(struct niu * np,struct rtnl_link_stats64 * stats)6236 static void niu_get_rx_stats(struct niu *np,
6237 struct rtnl_link_stats64 *stats)
6238 {
6239 u64 pkts, dropped, errors, bytes;
6240 struct rx_ring_info *rx_rings;
6241 int i;
6242
6243 pkts = dropped = errors = bytes = 0;
6244
6245 rx_rings = READ_ONCE(np->rx_rings);
6246 if (!rx_rings)
6247 goto no_rings;
6248
6249 for (i = 0; i < np->num_rx_rings; i++) {
6250 struct rx_ring_info *rp = &rx_rings[i];
6251
6252 niu_sync_rx_discard_stats(np, rp, 0);
6253
6254 pkts += rp->rx_packets;
6255 bytes += rp->rx_bytes;
6256 dropped += rp->rx_dropped;
6257 errors += rp->rx_errors;
6258 }
6259
6260 no_rings:
6261 stats->rx_packets = pkts;
6262 stats->rx_bytes = bytes;
6263 stats->rx_dropped = dropped;
6264 stats->rx_errors = errors;
6265 }
6266
niu_get_tx_stats(struct niu * np,struct rtnl_link_stats64 * stats)6267 static void niu_get_tx_stats(struct niu *np,
6268 struct rtnl_link_stats64 *stats)
6269 {
6270 u64 pkts, errors, bytes;
6271 struct tx_ring_info *tx_rings;
6272 int i;
6273
6274 pkts = errors = bytes = 0;
6275
6276 tx_rings = READ_ONCE(np->tx_rings);
6277 if (!tx_rings)
6278 goto no_rings;
6279
6280 for (i = 0; i < np->num_tx_rings; i++) {
6281 struct tx_ring_info *rp = &tx_rings[i];
6282
6283 pkts += rp->tx_packets;
6284 bytes += rp->tx_bytes;
6285 errors += rp->tx_errors;
6286 }
6287
6288 no_rings:
6289 stats->tx_packets = pkts;
6290 stats->tx_bytes = bytes;
6291 stats->tx_errors = errors;
6292 }
6293
niu_get_stats(struct net_device * dev,struct rtnl_link_stats64 * stats)6294 static void niu_get_stats(struct net_device *dev,
6295 struct rtnl_link_stats64 *stats)
6296 {
6297 struct niu *np = netdev_priv(dev);
6298
6299 if (netif_running(dev)) {
6300 niu_get_rx_stats(np, stats);
6301 niu_get_tx_stats(np, stats);
6302 }
6303 }
6304
niu_load_hash_xmac(struct niu * np,u16 * hash)6305 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6306 {
6307 int i;
6308
6309 for (i = 0; i < 16; i++)
6310 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6311 }
6312
niu_load_hash_bmac(struct niu * np,u16 * hash)6313 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6314 {
6315 int i;
6316
6317 for (i = 0; i < 16; i++)
6318 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6319 }
6320
niu_load_hash(struct niu * np,u16 * hash)6321 static void niu_load_hash(struct niu *np, u16 *hash)
6322 {
6323 if (np->flags & NIU_FLAGS_XMAC)
6324 niu_load_hash_xmac(np, hash);
6325 else
6326 niu_load_hash_bmac(np, hash);
6327 }
6328
niu_set_rx_mode(struct net_device * dev)6329 static void niu_set_rx_mode(struct net_device *dev)
6330 {
6331 struct niu *np = netdev_priv(dev);
6332 int i, alt_cnt, err;
6333 struct netdev_hw_addr *ha;
6334 unsigned long flags;
6335 u16 hash[16] = { 0, };
6336
6337 spin_lock_irqsave(&np->lock, flags);
6338 niu_enable_rx_mac(np, 0);
6339
6340 np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6341 if (dev->flags & IFF_PROMISC)
6342 np->flags |= NIU_FLAGS_PROMISC;
6343 if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6344 np->flags |= NIU_FLAGS_MCAST;
6345
6346 alt_cnt = netdev_uc_count(dev);
6347 if (alt_cnt > niu_num_alt_addr(np)) {
6348 alt_cnt = 0;
6349 np->flags |= NIU_FLAGS_PROMISC;
6350 }
6351
6352 if (alt_cnt) {
6353 int index = 0;
6354
6355 netdev_for_each_uc_addr(ha, dev) {
6356 err = niu_set_alt_mac(np, index, ha->addr);
6357 if (err)
6358 netdev_warn(dev, "Error %d adding alt mac %d\n",
6359 err, index);
6360 err = niu_enable_alt_mac(np, index, 1);
6361 if (err)
6362 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6363 err, index);
6364
6365 index++;
6366 }
6367 } else {
6368 int alt_start;
6369 if (np->flags & NIU_FLAGS_XMAC)
6370 alt_start = 0;
6371 else
6372 alt_start = 1;
6373 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6374 err = niu_enable_alt_mac(np, i, 0);
6375 if (err)
6376 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6377 err, i);
6378 }
6379 }
6380 if (dev->flags & IFF_ALLMULTI) {
6381 for (i = 0; i < 16; i++)
6382 hash[i] = 0xffff;
6383 } else if (!netdev_mc_empty(dev)) {
6384 netdev_for_each_mc_addr(ha, dev) {
6385 u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6386
6387 crc >>= 24;
6388 hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6389 }
6390 }
6391
6392 if (np->flags & NIU_FLAGS_MCAST)
6393 niu_load_hash(np, hash);
6394
6395 niu_enable_rx_mac(np, 1);
6396 spin_unlock_irqrestore(&np->lock, flags);
6397 }
6398
niu_set_mac_addr(struct net_device * dev,void * p)6399 static int niu_set_mac_addr(struct net_device *dev, void *p)
6400 {
6401 struct niu *np = netdev_priv(dev);
6402 struct sockaddr *addr = p;
6403 unsigned long flags;
6404
6405 if (!is_valid_ether_addr(addr->sa_data))
6406 return -EADDRNOTAVAIL;
6407
6408 eth_hw_addr_set(dev, addr->sa_data);
6409
6410 if (!netif_running(dev))
6411 return 0;
6412
6413 spin_lock_irqsave(&np->lock, flags);
6414 niu_enable_rx_mac(np, 0);
6415 niu_set_primary_mac(np, dev->dev_addr);
6416 niu_enable_rx_mac(np, 1);
6417 spin_unlock_irqrestore(&np->lock, flags);
6418
6419 return 0;
6420 }
6421
niu_ioctl(struct net_device * dev,struct ifreq * ifr,int cmd)6422 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6423 {
6424 return -EOPNOTSUPP;
6425 }
6426
niu_netif_stop(struct niu * np)6427 static void niu_netif_stop(struct niu *np)
6428 {
6429 netif_trans_update(np->dev); /* prevent tx timeout */
6430
6431 niu_disable_napi(np);
6432
6433 netif_tx_disable(np->dev);
6434 }
6435
niu_netif_start(struct niu * np)6436 static void niu_netif_start(struct niu *np)
6437 {
6438 /* NOTE: unconditional netif_wake_queue is only appropriate
6439 * so long as all callers are assured to have free tx slots
6440 * (such as after niu_init_hw).
6441 */
6442 netif_tx_wake_all_queues(np->dev);
6443
6444 niu_enable_napi(np);
6445
6446 niu_enable_interrupts(np, 1);
6447 }
6448
niu_reset_buffers(struct niu * np)6449 static void niu_reset_buffers(struct niu *np)
6450 {
6451 int i, j, k, err;
6452
6453 if (np->rx_rings) {
6454 for (i = 0; i < np->num_rx_rings; i++) {
6455 struct rx_ring_info *rp = &np->rx_rings[i];
6456
6457 for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6458 struct page *page;
6459
6460 page = rp->rxhash[j];
6461 while (page) {
6462 struct page *next = niu_next_page(page);
6463 u64 base = page->index;
6464 base = base >> RBR_DESCR_ADDR_SHIFT;
6465 rp->rbr[k++] = cpu_to_le32(base);
6466 page = next;
6467 }
6468 }
6469 for (; k < MAX_RBR_RING_SIZE; k++) {
6470 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6471 if (unlikely(err))
6472 break;
6473 }
6474
6475 rp->rbr_index = rp->rbr_table_size - 1;
6476 rp->rcr_index = 0;
6477 rp->rbr_pending = 0;
6478 rp->rbr_refill_pending = 0;
6479 }
6480 }
6481 if (np->tx_rings) {
6482 for (i = 0; i < np->num_tx_rings; i++) {
6483 struct tx_ring_info *rp = &np->tx_rings[i];
6484
6485 for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6486 if (rp->tx_buffs[j].skb)
6487 (void) release_tx_packet(np, rp, j);
6488 }
6489
6490 rp->pending = MAX_TX_RING_SIZE;
6491 rp->prod = 0;
6492 rp->cons = 0;
6493 rp->wrap_bit = 0;
6494 }
6495 }
6496 }
6497
niu_reset_task(struct work_struct * work)6498 static void niu_reset_task(struct work_struct *work)
6499 {
6500 struct niu *np = container_of(work, struct niu, reset_task);
6501 unsigned long flags;
6502 int err;
6503
6504 spin_lock_irqsave(&np->lock, flags);
6505 if (!netif_running(np->dev)) {
6506 spin_unlock_irqrestore(&np->lock, flags);
6507 return;
6508 }
6509
6510 spin_unlock_irqrestore(&np->lock, flags);
6511
6512 del_timer_sync(&np->timer);
6513
6514 niu_netif_stop(np);
6515
6516 spin_lock_irqsave(&np->lock, flags);
6517
6518 niu_stop_hw(np);
6519
6520 spin_unlock_irqrestore(&np->lock, flags);
6521
6522 niu_reset_buffers(np);
6523
6524 spin_lock_irqsave(&np->lock, flags);
6525
6526 err = niu_init_hw(np);
6527 if (!err) {
6528 np->timer.expires = jiffies + HZ;
6529 add_timer(&np->timer);
6530 niu_netif_start(np);
6531 }
6532
6533 spin_unlock_irqrestore(&np->lock, flags);
6534 }
6535
niu_tx_timeout(struct net_device * dev,unsigned int txqueue)6536 static void niu_tx_timeout(struct net_device *dev, unsigned int txqueue)
6537 {
6538 struct niu *np = netdev_priv(dev);
6539
6540 dev_err(np->device, "%s: Transmit timed out, resetting\n",
6541 dev->name);
6542
6543 schedule_work(&np->reset_task);
6544 }
6545
niu_set_txd(struct tx_ring_info * rp,int index,u64 mapping,u64 len,u64 mark,u64 n_frags)6546 static void niu_set_txd(struct tx_ring_info *rp, int index,
6547 u64 mapping, u64 len, u64 mark,
6548 u64 n_frags)
6549 {
6550 __le64 *desc = &rp->descr[index];
6551
6552 *desc = cpu_to_le64(mark |
6553 (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6554 (len << TX_DESC_TR_LEN_SHIFT) |
6555 (mapping & TX_DESC_SAD));
6556 }
6557
niu_compute_tx_flags(struct sk_buff * skb,struct ethhdr * ehdr,u64 pad_bytes,u64 len)6558 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6559 u64 pad_bytes, u64 len)
6560 {
6561 u16 eth_proto, eth_proto_inner;
6562 u64 csum_bits, l3off, ihl, ret;
6563 u8 ip_proto;
6564 int ipv6;
6565
6566 eth_proto = be16_to_cpu(ehdr->h_proto);
6567 eth_proto_inner = eth_proto;
6568 if (eth_proto == ETH_P_8021Q) {
6569 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6570 __be16 val = vp->h_vlan_encapsulated_proto;
6571
6572 eth_proto_inner = be16_to_cpu(val);
6573 }
6574
6575 ipv6 = ihl = 0;
6576 switch (skb->protocol) {
6577 case cpu_to_be16(ETH_P_IP):
6578 ip_proto = ip_hdr(skb)->protocol;
6579 ihl = ip_hdr(skb)->ihl;
6580 break;
6581 case cpu_to_be16(ETH_P_IPV6):
6582 ip_proto = ipv6_hdr(skb)->nexthdr;
6583 ihl = (40 >> 2);
6584 ipv6 = 1;
6585 break;
6586 default:
6587 ip_proto = ihl = 0;
6588 break;
6589 }
6590
6591 csum_bits = TXHDR_CSUM_NONE;
6592 if (skb->ip_summed == CHECKSUM_PARTIAL) {
6593 u64 start, stuff;
6594
6595 csum_bits = (ip_proto == IPPROTO_TCP ?
6596 TXHDR_CSUM_TCP :
6597 (ip_proto == IPPROTO_UDP ?
6598 TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6599
6600 start = skb_checksum_start_offset(skb) -
6601 (pad_bytes + sizeof(struct tx_pkt_hdr));
6602 stuff = start + skb->csum_offset;
6603
6604 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6605 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6606 }
6607
6608 l3off = skb_network_offset(skb) -
6609 (pad_bytes + sizeof(struct tx_pkt_hdr));
6610
6611 ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6612 (len << TXHDR_LEN_SHIFT) |
6613 ((l3off / 2) << TXHDR_L3START_SHIFT) |
6614 (ihl << TXHDR_IHL_SHIFT) |
6615 ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
6616 ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6617 (ipv6 ? TXHDR_IP_VER : 0) |
6618 csum_bits);
6619
6620 return ret;
6621 }
6622
niu_start_xmit(struct sk_buff * skb,struct net_device * dev)6623 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6624 struct net_device *dev)
6625 {
6626 struct niu *np = netdev_priv(dev);
6627 unsigned long align, headroom;
6628 struct netdev_queue *txq;
6629 struct tx_ring_info *rp;
6630 struct tx_pkt_hdr *tp;
6631 unsigned int len, nfg;
6632 struct ethhdr *ehdr;
6633 int prod, i, tlen;
6634 u64 mapping, mrk;
6635
6636 i = skb_get_queue_mapping(skb);
6637 rp = &np->tx_rings[i];
6638 txq = netdev_get_tx_queue(dev, i);
6639
6640 if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6641 netif_tx_stop_queue(txq);
6642 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6643 rp->tx_errors++;
6644 return NETDEV_TX_BUSY;
6645 }
6646
6647 if (eth_skb_pad(skb))
6648 goto out;
6649
6650 len = sizeof(struct tx_pkt_hdr) + 15;
6651 if (skb_headroom(skb) < len) {
6652 struct sk_buff *skb_new;
6653
6654 skb_new = skb_realloc_headroom(skb, len);
6655 if (!skb_new)
6656 goto out_drop;
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 = 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 if (np->ops->mapping_error(np->device, mapping))
6676 goto out_drop;
6677
6678 prod = rp->prod;
6679
6680 rp->tx_buffs[prod].skb = skb;
6681 rp->tx_buffs[prod].mapping = mapping;
6682
6683 mrk = TX_DESC_SOP;
6684 if (++rp->mark_counter == rp->mark_freq) {
6685 rp->mark_counter = 0;
6686 mrk |= TX_DESC_MARK;
6687 rp->mark_pending++;
6688 }
6689
6690 tlen = len;
6691 nfg = skb_shinfo(skb)->nr_frags;
6692 while (tlen > 0) {
6693 tlen -= MAX_TX_DESC_LEN;
6694 nfg++;
6695 }
6696
6697 while (len > 0) {
6698 unsigned int this_len = len;
6699
6700 if (this_len > MAX_TX_DESC_LEN)
6701 this_len = MAX_TX_DESC_LEN;
6702
6703 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6704 mrk = nfg = 0;
6705
6706 prod = NEXT_TX(rp, prod);
6707 mapping += this_len;
6708 len -= this_len;
6709 }
6710
6711 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
6712 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6713
6714 len = skb_frag_size(frag);
6715 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6716 skb_frag_off(frag), len,
6717 DMA_TO_DEVICE);
6718 if (np->ops->mapping_error(np->device, mapping))
6719 goto out_unmap;
6720
6721 rp->tx_buffs[prod].skb = NULL;
6722 rp->tx_buffs[prod].mapping = mapping;
6723
6724 niu_set_txd(rp, prod, mapping, len, 0, 0);
6725
6726 prod = NEXT_TX(rp, prod);
6727 }
6728
6729 if (prod < rp->prod)
6730 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6731 rp->prod = prod;
6732
6733 nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6734
6735 if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6736 netif_tx_stop_queue(txq);
6737 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6738 netif_tx_wake_queue(txq);
6739 }
6740
6741 out:
6742 return NETDEV_TX_OK;
6743
6744 out_unmap:
6745 while (i--) {
6746 const skb_frag_t *frag;
6747
6748 prod = PREVIOUS_TX(rp, prod);
6749 frag = &skb_shinfo(skb)->frags[i];
6750 np->ops->unmap_page(np->device, rp->tx_buffs[prod].mapping,
6751 skb_frag_size(frag), DMA_TO_DEVICE);
6752 }
6753
6754 np->ops->unmap_single(np->device, rp->tx_buffs[rp->prod].mapping,
6755 skb_headlen(skb), DMA_TO_DEVICE);
6756
6757 out_drop:
6758 rp->tx_errors++;
6759 kfree_skb(skb);
6760 goto out;
6761 }
6762
niu_change_mtu(struct net_device * dev,int new_mtu)6763 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6764 {
6765 struct niu *np = netdev_priv(dev);
6766 int err, orig_jumbo, new_jumbo;
6767
6768 orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6769 new_jumbo = (new_mtu > ETH_DATA_LEN);
6770
6771 dev->mtu = new_mtu;
6772
6773 if (!netif_running(dev) ||
6774 (orig_jumbo == new_jumbo))
6775 return 0;
6776
6777 niu_full_shutdown(np, dev);
6778
6779 niu_free_channels(np);
6780
6781 niu_enable_napi(np);
6782
6783 err = niu_alloc_channels(np);
6784 if (err)
6785 return err;
6786
6787 spin_lock_irq(&np->lock);
6788
6789 err = niu_init_hw(np);
6790 if (!err) {
6791 timer_setup(&np->timer, niu_timer, 0);
6792 np->timer.expires = jiffies + HZ;
6793
6794 err = niu_enable_interrupts(np, 1);
6795 if (err)
6796 niu_stop_hw(np);
6797 }
6798
6799 spin_unlock_irq(&np->lock);
6800
6801 if (!err) {
6802 netif_tx_start_all_queues(dev);
6803 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6804 netif_carrier_on(dev);
6805
6806 add_timer(&np->timer);
6807 }
6808
6809 return err;
6810 }
6811
niu_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)6812 static void niu_get_drvinfo(struct net_device *dev,
6813 struct ethtool_drvinfo *info)
6814 {
6815 struct niu *np = netdev_priv(dev);
6816 struct niu_vpd *vpd = &np->vpd;
6817
6818 strscpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
6819 strscpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
6820 snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6821 vpd->fcode_major, vpd->fcode_minor);
6822 if (np->parent->plat_type != PLAT_TYPE_NIU)
6823 strscpy(info->bus_info, pci_name(np->pdev),
6824 sizeof(info->bus_info));
6825 }
6826
niu_get_link_ksettings(struct net_device * dev,struct ethtool_link_ksettings * cmd)6827 static int niu_get_link_ksettings(struct net_device *dev,
6828 struct ethtool_link_ksettings *cmd)
6829 {
6830 struct niu *np = netdev_priv(dev);
6831 struct niu_link_config *lp;
6832
6833 lp = &np->link_config;
6834
6835 memset(cmd, 0, sizeof(*cmd));
6836 cmd->base.phy_address = np->phy_addr;
6837 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
6838 lp->supported);
6839 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
6840 lp->active_advertising);
6841 cmd->base.autoneg = lp->active_autoneg;
6842 cmd->base.speed = lp->active_speed;
6843 cmd->base.duplex = lp->active_duplex;
6844 cmd->base.port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6845
6846 return 0;
6847 }
6848
niu_set_link_ksettings(struct net_device * dev,const struct ethtool_link_ksettings * cmd)6849 static int niu_set_link_ksettings(struct net_device *dev,
6850 const struct ethtool_link_ksettings *cmd)
6851 {
6852 struct niu *np = netdev_priv(dev);
6853 struct niu_link_config *lp = &np->link_config;
6854
6855 ethtool_convert_link_mode_to_legacy_u32(&lp->advertising,
6856 cmd->link_modes.advertising);
6857 lp->speed = cmd->base.speed;
6858 lp->duplex = cmd->base.duplex;
6859 lp->autoneg = cmd->base.autoneg;
6860 return niu_init_link(np);
6861 }
6862
niu_get_msglevel(struct net_device * dev)6863 static u32 niu_get_msglevel(struct net_device *dev)
6864 {
6865 struct niu *np = netdev_priv(dev);
6866 return np->msg_enable;
6867 }
6868
niu_set_msglevel(struct net_device * dev,u32 value)6869 static void niu_set_msglevel(struct net_device *dev, u32 value)
6870 {
6871 struct niu *np = netdev_priv(dev);
6872 np->msg_enable = value;
6873 }
6874
niu_nway_reset(struct net_device * dev)6875 static int niu_nway_reset(struct net_device *dev)
6876 {
6877 struct niu *np = netdev_priv(dev);
6878
6879 if (np->link_config.autoneg)
6880 return niu_init_link(np);
6881
6882 return 0;
6883 }
6884
niu_get_eeprom_len(struct net_device * dev)6885 static int niu_get_eeprom_len(struct net_device *dev)
6886 {
6887 struct niu *np = netdev_priv(dev);
6888
6889 return np->eeprom_len;
6890 }
6891
niu_get_eeprom(struct net_device * dev,struct ethtool_eeprom * eeprom,u8 * data)6892 static int niu_get_eeprom(struct net_device *dev,
6893 struct ethtool_eeprom *eeprom, u8 *data)
6894 {
6895 struct niu *np = netdev_priv(dev);
6896 u32 offset, len, val;
6897
6898 offset = eeprom->offset;
6899 len = eeprom->len;
6900
6901 if (offset + len < offset)
6902 return -EINVAL;
6903 if (offset >= np->eeprom_len)
6904 return -EINVAL;
6905 if (offset + len > np->eeprom_len)
6906 len = eeprom->len = np->eeprom_len - offset;
6907
6908 if (offset & 3) {
6909 u32 b_offset, b_count;
6910
6911 b_offset = offset & 3;
6912 b_count = 4 - b_offset;
6913 if (b_count > len)
6914 b_count = len;
6915
6916 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6917 memcpy(data, ((char *)&val) + b_offset, b_count);
6918 data += b_count;
6919 len -= b_count;
6920 offset += b_count;
6921 }
6922 while (len >= 4) {
6923 val = nr64(ESPC_NCR(offset / 4));
6924 memcpy(data, &val, 4);
6925 data += 4;
6926 len -= 4;
6927 offset += 4;
6928 }
6929 if (len) {
6930 val = nr64(ESPC_NCR(offset / 4));
6931 memcpy(data, &val, len);
6932 }
6933 return 0;
6934 }
6935
niu_ethflow_to_l3proto(int flow_type,u8 * pid)6936 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6937 {
6938 switch (flow_type) {
6939 case TCP_V4_FLOW:
6940 case TCP_V6_FLOW:
6941 *pid = IPPROTO_TCP;
6942 break;
6943 case UDP_V4_FLOW:
6944 case UDP_V6_FLOW:
6945 *pid = IPPROTO_UDP;
6946 break;
6947 case SCTP_V4_FLOW:
6948 case SCTP_V6_FLOW:
6949 *pid = IPPROTO_SCTP;
6950 break;
6951 case AH_V4_FLOW:
6952 case AH_V6_FLOW:
6953 *pid = IPPROTO_AH;
6954 break;
6955 case ESP_V4_FLOW:
6956 case ESP_V6_FLOW:
6957 *pid = IPPROTO_ESP;
6958 break;
6959 default:
6960 *pid = 0;
6961 break;
6962 }
6963 }
6964
niu_class_to_ethflow(u64 class,int * flow_type)6965 static int niu_class_to_ethflow(u64 class, int *flow_type)
6966 {
6967 switch (class) {
6968 case CLASS_CODE_TCP_IPV4:
6969 *flow_type = TCP_V4_FLOW;
6970 break;
6971 case CLASS_CODE_UDP_IPV4:
6972 *flow_type = UDP_V4_FLOW;
6973 break;
6974 case CLASS_CODE_AH_ESP_IPV4:
6975 *flow_type = AH_V4_FLOW;
6976 break;
6977 case CLASS_CODE_SCTP_IPV4:
6978 *flow_type = SCTP_V4_FLOW;
6979 break;
6980 case CLASS_CODE_TCP_IPV6:
6981 *flow_type = TCP_V6_FLOW;
6982 break;
6983 case CLASS_CODE_UDP_IPV6:
6984 *flow_type = UDP_V6_FLOW;
6985 break;
6986 case CLASS_CODE_AH_ESP_IPV6:
6987 *flow_type = AH_V6_FLOW;
6988 break;
6989 case CLASS_CODE_SCTP_IPV6:
6990 *flow_type = SCTP_V6_FLOW;
6991 break;
6992 case CLASS_CODE_USER_PROG1:
6993 case CLASS_CODE_USER_PROG2:
6994 case CLASS_CODE_USER_PROG3:
6995 case CLASS_CODE_USER_PROG4:
6996 *flow_type = IP_USER_FLOW;
6997 break;
6998 default:
6999 return -EINVAL;
7000 }
7001
7002 return 0;
7003 }
7004
niu_ethflow_to_class(int flow_type,u64 * class)7005 static int niu_ethflow_to_class(int flow_type, u64 *class)
7006 {
7007 switch (flow_type) {
7008 case TCP_V4_FLOW:
7009 *class = CLASS_CODE_TCP_IPV4;
7010 break;
7011 case UDP_V4_FLOW:
7012 *class = CLASS_CODE_UDP_IPV4;
7013 break;
7014 case AH_ESP_V4_FLOW:
7015 case AH_V4_FLOW:
7016 case ESP_V4_FLOW:
7017 *class = CLASS_CODE_AH_ESP_IPV4;
7018 break;
7019 case SCTP_V4_FLOW:
7020 *class = CLASS_CODE_SCTP_IPV4;
7021 break;
7022 case TCP_V6_FLOW:
7023 *class = CLASS_CODE_TCP_IPV6;
7024 break;
7025 case UDP_V6_FLOW:
7026 *class = CLASS_CODE_UDP_IPV6;
7027 break;
7028 case AH_ESP_V6_FLOW:
7029 case AH_V6_FLOW:
7030 case ESP_V6_FLOW:
7031 *class = CLASS_CODE_AH_ESP_IPV6;
7032 break;
7033 case SCTP_V6_FLOW:
7034 *class = CLASS_CODE_SCTP_IPV6;
7035 break;
7036 default:
7037 return 0;
7038 }
7039
7040 return 1;
7041 }
7042
niu_flowkey_to_ethflow(u64 flow_key)7043 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7044 {
7045 u64 ethflow = 0;
7046
7047 if (flow_key & FLOW_KEY_L2DA)
7048 ethflow |= RXH_L2DA;
7049 if (flow_key & FLOW_KEY_VLAN)
7050 ethflow |= RXH_VLAN;
7051 if (flow_key & FLOW_KEY_IPSA)
7052 ethflow |= RXH_IP_SRC;
7053 if (flow_key & FLOW_KEY_IPDA)
7054 ethflow |= RXH_IP_DST;
7055 if (flow_key & FLOW_KEY_PROTO)
7056 ethflow |= RXH_L3_PROTO;
7057 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7058 ethflow |= RXH_L4_B_0_1;
7059 if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7060 ethflow |= RXH_L4_B_2_3;
7061
7062 return ethflow;
7063
7064 }
7065
niu_ethflow_to_flowkey(u64 ethflow,u64 * flow_key)7066 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7067 {
7068 u64 key = 0;
7069
7070 if (ethflow & RXH_L2DA)
7071 key |= FLOW_KEY_L2DA;
7072 if (ethflow & RXH_VLAN)
7073 key |= FLOW_KEY_VLAN;
7074 if (ethflow & RXH_IP_SRC)
7075 key |= FLOW_KEY_IPSA;
7076 if (ethflow & RXH_IP_DST)
7077 key |= FLOW_KEY_IPDA;
7078 if (ethflow & RXH_L3_PROTO)
7079 key |= FLOW_KEY_PROTO;
7080 if (ethflow & RXH_L4_B_0_1)
7081 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7082 if (ethflow & RXH_L4_B_2_3)
7083 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7084
7085 *flow_key = key;
7086
7087 return 1;
7088
7089 }
7090
niu_get_hash_opts(struct niu * np,struct ethtool_rxnfc * nfc)7091 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7092 {
7093 u64 class;
7094
7095 nfc->data = 0;
7096
7097 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7098 return -EINVAL;
7099
7100 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7101 TCAM_KEY_DISC)
7102 nfc->data = RXH_DISCARD;
7103 else
7104 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7105 CLASS_CODE_USER_PROG1]);
7106 return 0;
7107 }
7108
niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry * tp,struct ethtool_rx_flow_spec * fsp)7109 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7110 struct ethtool_rx_flow_spec *fsp)
7111 {
7112 u32 tmp;
7113 u16 prt;
7114
7115 tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7116 fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7117
7118 tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7119 fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7120
7121 tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7122 fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7123
7124 tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7125 fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7126
7127 fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7128 TCAM_V4KEY2_TOS_SHIFT;
7129 fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7130 TCAM_V4KEY2_TOS_SHIFT;
7131
7132 switch (fsp->flow_type) {
7133 case TCP_V4_FLOW:
7134 case UDP_V4_FLOW:
7135 case SCTP_V4_FLOW:
7136 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7137 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7138 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7139
7140 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7141 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7142 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7143
7144 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7145 TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7146 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7147
7148 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7149 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7150 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7151 break;
7152 case AH_V4_FLOW:
7153 case ESP_V4_FLOW:
7154 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7155 TCAM_V4KEY2_PORT_SPI_SHIFT;
7156 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7157
7158 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7159 TCAM_V4KEY2_PORT_SPI_SHIFT;
7160 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7161 break;
7162 case IP_USER_FLOW:
7163 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7164 TCAM_V4KEY2_PORT_SPI_SHIFT;
7165 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7166
7167 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7168 TCAM_V4KEY2_PORT_SPI_SHIFT;
7169 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
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
niu_get_ethtool_tcam_entry(struct niu * np,struct ethtool_rxnfc * nfc)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 if (ret < 0) {
7209 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7210 parent->index);
7211 goto out;
7212 }
7213
7214 if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7215 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7216 TCAM_V4KEY2_PROTO_SHIFT;
7217 if (proto == IPPROTO_ESP) {
7218 if (fsp->flow_type == AH_V4_FLOW)
7219 fsp->flow_type = ESP_V4_FLOW;
7220 else
7221 fsp->flow_type = ESP_V6_FLOW;
7222 }
7223 }
7224
7225 switch (fsp->flow_type) {
7226 case TCP_V4_FLOW:
7227 case UDP_V4_FLOW:
7228 case SCTP_V4_FLOW:
7229 case AH_V4_FLOW:
7230 case ESP_V4_FLOW:
7231 niu_get_ip4fs_from_tcam_key(tp, fsp);
7232 break;
7233 case TCP_V6_FLOW:
7234 case UDP_V6_FLOW:
7235 case SCTP_V6_FLOW:
7236 case AH_V6_FLOW:
7237 case ESP_V6_FLOW:
7238 /* Not yet implemented */
7239 ret = -EINVAL;
7240 break;
7241 case IP_USER_FLOW:
7242 niu_get_ip4fs_from_tcam_key(tp, fsp);
7243 break;
7244 default:
7245 ret = -EINVAL;
7246 break;
7247 }
7248
7249 if (ret < 0)
7250 goto out;
7251
7252 if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7253 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7254 else
7255 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7256 TCAM_ASSOCDATA_OFFSET_SHIFT;
7257
7258 /* put the tcam size here */
7259 nfc->data = tcam_get_size(np);
7260 out:
7261 return ret;
7262 }
7263
niu_get_ethtool_tcam_all(struct niu * np,struct ethtool_rxnfc * nfc,u32 * rule_locs)7264 static int niu_get_ethtool_tcam_all(struct niu *np,
7265 struct ethtool_rxnfc *nfc,
7266 u32 *rule_locs)
7267 {
7268 struct niu_parent *parent = np->parent;
7269 struct niu_tcam_entry *tp;
7270 int i, idx, cnt;
7271 unsigned long flags;
7272 int ret = 0;
7273
7274 /* put the tcam size here */
7275 nfc->data = tcam_get_size(np);
7276
7277 niu_lock_parent(np, flags);
7278 for (cnt = 0, i = 0; i < nfc->data; i++) {
7279 idx = tcam_get_index(np, i);
7280 tp = &parent->tcam[idx];
7281 if (!tp->valid)
7282 continue;
7283 if (cnt == nfc->rule_cnt) {
7284 ret = -EMSGSIZE;
7285 break;
7286 }
7287 rule_locs[cnt] = i;
7288 cnt++;
7289 }
7290 niu_unlock_parent(np, flags);
7291
7292 nfc->rule_cnt = cnt;
7293
7294 return ret;
7295 }
7296
niu_get_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd,u32 * rule_locs)7297 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7298 u32 *rule_locs)
7299 {
7300 struct niu *np = netdev_priv(dev);
7301 int ret = 0;
7302
7303 switch (cmd->cmd) {
7304 case ETHTOOL_GRXFH:
7305 ret = niu_get_hash_opts(np, cmd);
7306 break;
7307 case ETHTOOL_GRXRINGS:
7308 cmd->data = np->num_rx_rings;
7309 break;
7310 case ETHTOOL_GRXCLSRLCNT:
7311 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7312 break;
7313 case ETHTOOL_GRXCLSRULE:
7314 ret = niu_get_ethtool_tcam_entry(np, cmd);
7315 break;
7316 case ETHTOOL_GRXCLSRLALL:
7317 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7318 break;
7319 default:
7320 ret = -EINVAL;
7321 break;
7322 }
7323
7324 return ret;
7325 }
7326
niu_set_hash_opts(struct niu * np,struct ethtool_rxnfc * nfc)7327 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7328 {
7329 u64 class;
7330 u64 flow_key = 0;
7331 unsigned long flags;
7332
7333 if (!niu_ethflow_to_class(nfc->flow_type, &class))
7334 return -EINVAL;
7335
7336 if (class < CLASS_CODE_USER_PROG1 ||
7337 class > CLASS_CODE_SCTP_IPV6)
7338 return -EINVAL;
7339
7340 if (nfc->data & RXH_DISCARD) {
7341 niu_lock_parent(np, flags);
7342 flow_key = np->parent->tcam_key[class -
7343 CLASS_CODE_USER_PROG1];
7344 flow_key |= TCAM_KEY_DISC;
7345 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7346 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7347 niu_unlock_parent(np, flags);
7348 return 0;
7349 } else {
7350 /* Discard was set before, but is not set now */
7351 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7352 TCAM_KEY_DISC) {
7353 niu_lock_parent(np, flags);
7354 flow_key = np->parent->tcam_key[class -
7355 CLASS_CODE_USER_PROG1];
7356 flow_key &= ~TCAM_KEY_DISC;
7357 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7358 flow_key);
7359 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7360 flow_key;
7361 niu_unlock_parent(np, flags);
7362 }
7363 }
7364
7365 if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7366 return -EINVAL;
7367
7368 niu_lock_parent(np, flags);
7369 nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7370 np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7371 niu_unlock_parent(np, flags);
7372
7373 return 0;
7374 }
7375
niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec * fsp,struct niu_tcam_entry * tp,int l2_rdc_tab,u64 class)7376 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7377 struct niu_tcam_entry *tp,
7378 int l2_rdc_tab, u64 class)
7379 {
7380 u8 pid = 0;
7381 u32 sip, dip, sipm, dipm, spi, spim;
7382 u16 sport, dport, spm, dpm;
7383
7384 sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7385 sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7386 dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7387 dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7388
7389 tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7390 tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7391 tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7392 tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7393
7394 tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7395 tp->key[3] |= dip;
7396
7397 tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7398 tp->key_mask[3] |= dipm;
7399
7400 tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7401 TCAM_V4KEY2_TOS_SHIFT);
7402 tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7403 TCAM_V4KEY2_TOS_SHIFT);
7404 switch (fsp->flow_type) {
7405 case TCP_V4_FLOW:
7406 case UDP_V4_FLOW:
7407 case SCTP_V4_FLOW:
7408 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7409 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7410 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7411 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7412
7413 tp->key[2] |= (((u64)sport << 16) | dport);
7414 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7415 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7416 break;
7417 case AH_V4_FLOW:
7418 case ESP_V4_FLOW:
7419 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7420 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7421
7422 tp->key[2] |= spi;
7423 tp->key_mask[2] |= spim;
7424 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7425 break;
7426 case IP_USER_FLOW:
7427 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7428 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7429
7430 tp->key[2] |= spi;
7431 tp->key_mask[2] |= spim;
7432 pid = fsp->h_u.usr_ip4_spec.proto;
7433 break;
7434 default:
7435 break;
7436 }
7437
7438 tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7439 if (pid) {
7440 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7441 }
7442 }
7443
niu_add_ethtool_tcam_entry(struct niu * np,struct ethtool_rxnfc * nfc)7444 static int niu_add_ethtool_tcam_entry(struct niu *np,
7445 struct ethtool_rxnfc *nfc)
7446 {
7447 struct niu_parent *parent = np->parent;
7448 struct niu_tcam_entry *tp;
7449 struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7450 struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7451 int l2_rdc_table = rdc_table->first_table_num;
7452 u16 idx;
7453 u64 class;
7454 unsigned long flags;
7455 int err, ret;
7456
7457 ret = 0;
7458
7459 idx = nfc->fs.location;
7460 if (idx >= tcam_get_size(np))
7461 return -EINVAL;
7462
7463 if (fsp->flow_type == IP_USER_FLOW) {
7464 int i;
7465 int add_usr_cls = 0;
7466 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7467 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7468
7469 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7470 return -EINVAL;
7471
7472 niu_lock_parent(np, flags);
7473
7474 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7475 if (parent->l3_cls[i]) {
7476 if (uspec->proto == parent->l3_cls_pid[i]) {
7477 class = parent->l3_cls[i];
7478 parent->l3_cls_refcnt[i]++;
7479 add_usr_cls = 1;
7480 break;
7481 }
7482 } else {
7483 /* Program new user IP class */
7484 switch (i) {
7485 case 0:
7486 class = CLASS_CODE_USER_PROG1;
7487 break;
7488 case 1:
7489 class = CLASS_CODE_USER_PROG2;
7490 break;
7491 case 2:
7492 class = CLASS_CODE_USER_PROG3;
7493 break;
7494 case 3:
7495 class = CLASS_CODE_USER_PROG4;
7496 break;
7497 default:
7498 class = CLASS_CODE_UNRECOG;
7499 break;
7500 }
7501 ret = tcam_user_ip_class_set(np, class, 0,
7502 uspec->proto,
7503 uspec->tos,
7504 umask->tos);
7505 if (ret)
7506 goto out;
7507
7508 ret = tcam_user_ip_class_enable(np, class, 1);
7509 if (ret)
7510 goto out;
7511 parent->l3_cls[i] = class;
7512 parent->l3_cls_pid[i] = uspec->proto;
7513 parent->l3_cls_refcnt[i]++;
7514 add_usr_cls = 1;
7515 break;
7516 }
7517 }
7518 if (!add_usr_cls) {
7519 netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7520 parent->index, __func__, uspec->proto);
7521 ret = -EINVAL;
7522 goto out;
7523 }
7524 niu_unlock_parent(np, flags);
7525 } else {
7526 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7527 return -EINVAL;
7528 }
7529 }
7530
7531 niu_lock_parent(np, flags);
7532
7533 idx = tcam_get_index(np, idx);
7534 tp = &parent->tcam[idx];
7535
7536 memset(tp, 0, sizeof(*tp));
7537
7538 /* fill in the tcam key and mask */
7539 switch (fsp->flow_type) {
7540 case TCP_V4_FLOW:
7541 case UDP_V4_FLOW:
7542 case SCTP_V4_FLOW:
7543 case AH_V4_FLOW:
7544 case ESP_V4_FLOW:
7545 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7546 break;
7547 case TCP_V6_FLOW:
7548 case UDP_V6_FLOW:
7549 case SCTP_V6_FLOW:
7550 case AH_V6_FLOW:
7551 case ESP_V6_FLOW:
7552 /* Not yet implemented */
7553 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7554 parent->index, __func__, fsp->flow_type);
7555 ret = -EINVAL;
7556 goto out;
7557 case IP_USER_FLOW:
7558 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7559 break;
7560 default:
7561 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7562 parent->index, __func__, fsp->flow_type);
7563 ret = -EINVAL;
7564 goto out;
7565 }
7566
7567 /* fill in the assoc data */
7568 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7569 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7570 } else {
7571 if (fsp->ring_cookie >= np->num_rx_rings) {
7572 netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7573 parent->index, __func__,
7574 (long long)fsp->ring_cookie);
7575 ret = -EINVAL;
7576 goto out;
7577 }
7578 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7579 (fsp->ring_cookie <<
7580 TCAM_ASSOCDATA_OFFSET_SHIFT));
7581 }
7582
7583 err = tcam_write(np, idx, tp->key, tp->key_mask);
7584 if (err) {
7585 ret = -EINVAL;
7586 goto out;
7587 }
7588 err = tcam_assoc_write(np, idx, tp->assoc_data);
7589 if (err) {
7590 ret = -EINVAL;
7591 goto out;
7592 }
7593
7594 /* validate the entry */
7595 tp->valid = 1;
7596 np->clas.tcam_valid_entries++;
7597 out:
7598 niu_unlock_parent(np, flags);
7599
7600 return ret;
7601 }
7602
niu_del_ethtool_tcam_entry(struct niu * np,u32 loc)7603 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7604 {
7605 struct niu_parent *parent = np->parent;
7606 struct niu_tcam_entry *tp;
7607 u16 idx;
7608 unsigned long flags;
7609 u64 class;
7610 int ret = 0;
7611
7612 if (loc >= tcam_get_size(np))
7613 return -EINVAL;
7614
7615 niu_lock_parent(np, flags);
7616
7617 idx = tcam_get_index(np, loc);
7618 tp = &parent->tcam[idx];
7619
7620 /* if the entry is of a user defined class, then update*/
7621 class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7622 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7623
7624 if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7625 int i;
7626 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7627 if (parent->l3_cls[i] == class) {
7628 parent->l3_cls_refcnt[i]--;
7629 if (!parent->l3_cls_refcnt[i]) {
7630 /* disable class */
7631 ret = tcam_user_ip_class_enable(np,
7632 class,
7633 0);
7634 if (ret)
7635 goto out;
7636 parent->l3_cls[i] = 0;
7637 parent->l3_cls_pid[i] = 0;
7638 }
7639 break;
7640 }
7641 }
7642 if (i == NIU_L3_PROG_CLS) {
7643 netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7644 parent->index, __func__,
7645 (unsigned long long)class);
7646 ret = -EINVAL;
7647 goto out;
7648 }
7649 }
7650
7651 ret = tcam_flush(np, idx);
7652 if (ret)
7653 goto out;
7654
7655 /* invalidate the entry */
7656 tp->valid = 0;
7657 np->clas.tcam_valid_entries--;
7658 out:
7659 niu_unlock_parent(np, flags);
7660
7661 return ret;
7662 }
7663
niu_set_nfc(struct net_device * dev,struct ethtool_rxnfc * cmd)7664 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7665 {
7666 struct niu *np = netdev_priv(dev);
7667 int ret = 0;
7668
7669 switch (cmd->cmd) {
7670 case ETHTOOL_SRXFH:
7671 ret = niu_set_hash_opts(np, cmd);
7672 break;
7673 case ETHTOOL_SRXCLSRLINS:
7674 ret = niu_add_ethtool_tcam_entry(np, cmd);
7675 break;
7676 case ETHTOOL_SRXCLSRLDEL:
7677 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7678 break;
7679 default:
7680 ret = -EINVAL;
7681 break;
7682 }
7683
7684 return ret;
7685 }
7686
7687 static const struct {
7688 const char string[ETH_GSTRING_LEN];
7689 } niu_xmac_stat_keys[] = {
7690 { "tx_frames" },
7691 { "tx_bytes" },
7692 { "tx_fifo_errors" },
7693 { "tx_overflow_errors" },
7694 { "tx_max_pkt_size_errors" },
7695 { "tx_underflow_errors" },
7696 { "rx_local_faults" },
7697 { "rx_remote_faults" },
7698 { "rx_link_faults" },
7699 { "rx_align_errors" },
7700 { "rx_frags" },
7701 { "rx_mcasts" },
7702 { "rx_bcasts" },
7703 { "rx_hist_cnt1" },
7704 { "rx_hist_cnt2" },
7705 { "rx_hist_cnt3" },
7706 { "rx_hist_cnt4" },
7707 { "rx_hist_cnt5" },
7708 { "rx_hist_cnt6" },
7709 { "rx_hist_cnt7" },
7710 { "rx_octets" },
7711 { "rx_code_violations" },
7712 { "rx_len_errors" },
7713 { "rx_crc_errors" },
7714 { "rx_underflows" },
7715 { "rx_overflows" },
7716 { "pause_off_state" },
7717 { "pause_on_state" },
7718 { "pause_received" },
7719 };
7720
7721 #define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys)
7722
7723 static const struct {
7724 const char string[ETH_GSTRING_LEN];
7725 } niu_bmac_stat_keys[] = {
7726 { "tx_underflow_errors" },
7727 { "tx_max_pkt_size_errors" },
7728 { "tx_bytes" },
7729 { "tx_frames" },
7730 { "rx_overflows" },
7731 { "rx_frames" },
7732 { "rx_align_errors" },
7733 { "rx_crc_errors" },
7734 { "rx_len_errors" },
7735 { "pause_off_state" },
7736 { "pause_on_state" },
7737 { "pause_received" },
7738 };
7739
7740 #define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys)
7741
7742 static const struct {
7743 const char string[ETH_GSTRING_LEN];
7744 } niu_rxchan_stat_keys[] = {
7745 { "rx_channel" },
7746 { "rx_packets" },
7747 { "rx_bytes" },
7748 { "rx_dropped" },
7749 { "rx_errors" },
7750 };
7751
7752 #define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys)
7753
7754 static const struct {
7755 const char string[ETH_GSTRING_LEN];
7756 } niu_txchan_stat_keys[] = {
7757 { "tx_channel" },
7758 { "tx_packets" },
7759 { "tx_bytes" },
7760 { "tx_errors" },
7761 };
7762
7763 #define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys)
7764
niu_get_strings(struct net_device * dev,u32 stringset,u8 * data)7765 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7766 {
7767 struct niu *np = netdev_priv(dev);
7768 int i;
7769
7770 if (stringset != ETH_SS_STATS)
7771 return;
7772
7773 if (np->flags & NIU_FLAGS_XMAC) {
7774 memcpy(data, niu_xmac_stat_keys,
7775 sizeof(niu_xmac_stat_keys));
7776 data += sizeof(niu_xmac_stat_keys);
7777 } else {
7778 memcpy(data, niu_bmac_stat_keys,
7779 sizeof(niu_bmac_stat_keys));
7780 data += sizeof(niu_bmac_stat_keys);
7781 }
7782 for (i = 0; i < np->num_rx_rings; i++) {
7783 memcpy(data, niu_rxchan_stat_keys,
7784 sizeof(niu_rxchan_stat_keys));
7785 data += sizeof(niu_rxchan_stat_keys);
7786 }
7787 for (i = 0; i < np->num_tx_rings; i++) {
7788 memcpy(data, niu_txchan_stat_keys,
7789 sizeof(niu_txchan_stat_keys));
7790 data += sizeof(niu_txchan_stat_keys);
7791 }
7792 }
7793
niu_get_sset_count(struct net_device * dev,int stringset)7794 static int niu_get_sset_count(struct net_device *dev, int stringset)
7795 {
7796 struct niu *np = netdev_priv(dev);
7797
7798 if (stringset != ETH_SS_STATS)
7799 return -EINVAL;
7800
7801 return (np->flags & NIU_FLAGS_XMAC ?
7802 NUM_XMAC_STAT_KEYS :
7803 NUM_BMAC_STAT_KEYS) +
7804 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7805 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7806 }
7807
niu_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)7808 static void niu_get_ethtool_stats(struct net_device *dev,
7809 struct ethtool_stats *stats, u64 *data)
7810 {
7811 struct niu *np = netdev_priv(dev);
7812 int i;
7813
7814 niu_sync_mac_stats(np);
7815 if (np->flags & NIU_FLAGS_XMAC) {
7816 memcpy(data, &np->mac_stats.xmac,
7817 sizeof(struct niu_xmac_stats));
7818 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7819 } else {
7820 memcpy(data, &np->mac_stats.bmac,
7821 sizeof(struct niu_bmac_stats));
7822 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7823 }
7824 for (i = 0; i < np->num_rx_rings; i++) {
7825 struct rx_ring_info *rp = &np->rx_rings[i];
7826
7827 niu_sync_rx_discard_stats(np, rp, 0);
7828
7829 data[0] = rp->rx_channel;
7830 data[1] = rp->rx_packets;
7831 data[2] = rp->rx_bytes;
7832 data[3] = rp->rx_dropped;
7833 data[4] = rp->rx_errors;
7834 data += 5;
7835 }
7836 for (i = 0; i < np->num_tx_rings; i++) {
7837 struct tx_ring_info *rp = &np->tx_rings[i];
7838
7839 data[0] = rp->tx_channel;
7840 data[1] = rp->tx_packets;
7841 data[2] = rp->tx_bytes;
7842 data[3] = rp->tx_errors;
7843 data += 4;
7844 }
7845 }
7846
niu_led_state_save(struct niu * np)7847 static u64 niu_led_state_save(struct niu *np)
7848 {
7849 if (np->flags & NIU_FLAGS_XMAC)
7850 return nr64_mac(XMAC_CONFIG);
7851 else
7852 return nr64_mac(BMAC_XIF_CONFIG);
7853 }
7854
niu_led_state_restore(struct niu * np,u64 val)7855 static void niu_led_state_restore(struct niu *np, u64 val)
7856 {
7857 if (np->flags & NIU_FLAGS_XMAC)
7858 nw64_mac(XMAC_CONFIG, val);
7859 else
7860 nw64_mac(BMAC_XIF_CONFIG, val);
7861 }
7862
niu_force_led(struct niu * np,int on)7863 static void niu_force_led(struct niu *np, int on)
7864 {
7865 u64 val, reg, bit;
7866
7867 if (np->flags & NIU_FLAGS_XMAC) {
7868 reg = XMAC_CONFIG;
7869 bit = XMAC_CONFIG_FORCE_LED_ON;
7870 } else {
7871 reg = BMAC_XIF_CONFIG;
7872 bit = BMAC_XIF_CONFIG_LINK_LED;
7873 }
7874
7875 val = nr64_mac(reg);
7876 if (on)
7877 val |= bit;
7878 else
7879 val &= ~bit;
7880 nw64_mac(reg, val);
7881 }
7882
niu_set_phys_id(struct net_device * dev,enum ethtool_phys_id_state state)7883 static int niu_set_phys_id(struct net_device *dev,
7884 enum ethtool_phys_id_state state)
7885
7886 {
7887 struct niu *np = netdev_priv(dev);
7888
7889 if (!netif_running(dev))
7890 return -EAGAIN;
7891
7892 switch (state) {
7893 case ETHTOOL_ID_ACTIVE:
7894 np->orig_led_state = niu_led_state_save(np);
7895 return 1; /* cycle on/off once per second */
7896
7897 case ETHTOOL_ID_ON:
7898 niu_force_led(np, 1);
7899 break;
7900
7901 case ETHTOOL_ID_OFF:
7902 niu_force_led(np, 0);
7903 break;
7904
7905 case ETHTOOL_ID_INACTIVE:
7906 niu_led_state_restore(np, np->orig_led_state);
7907 }
7908
7909 return 0;
7910 }
7911
7912 static const struct ethtool_ops niu_ethtool_ops = {
7913 .get_drvinfo = niu_get_drvinfo,
7914 .get_link = ethtool_op_get_link,
7915 .get_msglevel = niu_get_msglevel,
7916 .set_msglevel = niu_set_msglevel,
7917 .nway_reset = niu_nway_reset,
7918 .get_eeprom_len = niu_get_eeprom_len,
7919 .get_eeprom = niu_get_eeprom,
7920 .get_strings = niu_get_strings,
7921 .get_sset_count = niu_get_sset_count,
7922 .get_ethtool_stats = niu_get_ethtool_stats,
7923 .set_phys_id = niu_set_phys_id,
7924 .get_rxnfc = niu_get_nfc,
7925 .set_rxnfc = niu_set_nfc,
7926 .get_link_ksettings = niu_get_link_ksettings,
7927 .set_link_ksettings = niu_set_link_ksettings,
7928 };
7929
niu_ldg_assign_ldn(struct niu * np,struct niu_parent * parent,int ldg,int ldn)7930 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7931 int ldg, int ldn)
7932 {
7933 if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7934 return -EINVAL;
7935 if (ldn < 0 || ldn > LDN_MAX)
7936 return -EINVAL;
7937
7938 parent->ldg_map[ldn] = ldg;
7939
7940 if (np->parent->plat_type == PLAT_TYPE_NIU) {
7941 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7942 * the firmware, and we're not supposed to change them.
7943 * Validate the mapping, because if it's wrong we probably
7944 * won't get any interrupts and that's painful to debug.
7945 */
7946 if (nr64(LDG_NUM(ldn)) != ldg) {
7947 dev_err(np->device, "Port %u, mismatched LDG assignment for ldn %d, should be %d is %llu\n",
7948 np->port, ldn, ldg,
7949 (unsigned long long) nr64(LDG_NUM(ldn)));
7950 return -EINVAL;
7951 }
7952 } else
7953 nw64(LDG_NUM(ldn), ldg);
7954
7955 return 0;
7956 }
7957
niu_set_ldg_timer_res(struct niu * np,int res)7958 static int niu_set_ldg_timer_res(struct niu *np, int res)
7959 {
7960 if (res < 0 || res > LDG_TIMER_RES_VAL)
7961 return -EINVAL;
7962
7963
7964 nw64(LDG_TIMER_RES, res);
7965
7966 return 0;
7967 }
7968
niu_set_ldg_sid(struct niu * np,int ldg,int func,int vector)7969 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7970 {
7971 if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7972 (func < 0 || func > 3) ||
7973 (vector < 0 || vector > 0x1f))
7974 return -EINVAL;
7975
7976 nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7977
7978 return 0;
7979 }
7980
niu_pci_eeprom_read(struct niu * np,u32 addr)7981 static int niu_pci_eeprom_read(struct niu *np, u32 addr)
7982 {
7983 u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7984 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7985 int limit;
7986
7987 if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7988 return -EINVAL;
7989
7990 frame = frame_base;
7991 nw64(ESPC_PIO_STAT, frame);
7992 limit = 64;
7993 do {
7994 udelay(5);
7995 frame = nr64(ESPC_PIO_STAT);
7996 if (frame & ESPC_PIO_STAT_READ_END)
7997 break;
7998 } while (limit--);
7999 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8000 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8001 (unsigned long long) frame);
8002 return -ENODEV;
8003 }
8004
8005 frame = frame_base;
8006 nw64(ESPC_PIO_STAT, frame);
8007 limit = 64;
8008 do {
8009 udelay(5);
8010 frame = nr64(ESPC_PIO_STAT);
8011 if (frame & ESPC_PIO_STAT_READ_END)
8012 break;
8013 } while (limit--);
8014 if (!(frame & ESPC_PIO_STAT_READ_END)) {
8015 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8016 (unsigned long long) frame);
8017 return -ENODEV;
8018 }
8019
8020 frame = nr64(ESPC_PIO_STAT);
8021 return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8022 }
8023
niu_pci_eeprom_read16(struct niu * np,u32 off)8024 static int niu_pci_eeprom_read16(struct niu *np, u32 off)
8025 {
8026 int err = niu_pci_eeprom_read(np, off);
8027 u16 val;
8028
8029 if (err < 0)
8030 return err;
8031 val = (err << 8);
8032 err = niu_pci_eeprom_read(np, off + 1);
8033 if (err < 0)
8034 return err;
8035 val |= (err & 0xff);
8036
8037 return val;
8038 }
8039
niu_pci_eeprom_read16_swp(struct niu * np,u32 off)8040 static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8041 {
8042 int err = niu_pci_eeprom_read(np, off);
8043 u16 val;
8044
8045 if (err < 0)
8046 return err;
8047
8048 val = (err & 0xff);
8049 err = niu_pci_eeprom_read(np, off + 1);
8050 if (err < 0)
8051 return err;
8052
8053 val |= (err & 0xff) << 8;
8054
8055 return val;
8056 }
8057
niu_pci_vpd_get_propname(struct niu * np,u32 off,char * namebuf,int namebuf_len)8058 static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
8059 int namebuf_len)
8060 {
8061 int i;
8062
8063 for (i = 0; i < namebuf_len; i++) {
8064 int err = niu_pci_eeprom_read(np, off + i);
8065 if (err < 0)
8066 return err;
8067 *namebuf++ = err;
8068 if (!err)
8069 break;
8070 }
8071 if (i >= namebuf_len)
8072 return -EINVAL;
8073
8074 return i + 1;
8075 }
8076
niu_vpd_parse_version(struct niu * np)8077 static void niu_vpd_parse_version(struct niu *np)
8078 {
8079 struct niu_vpd *vpd = &np->vpd;
8080 int len = strlen(vpd->version) + 1;
8081 const char *s = vpd->version;
8082 int i;
8083
8084 for (i = 0; i < len - 5; i++) {
8085 if (!strncmp(s + i, "FCode ", 6))
8086 break;
8087 }
8088 if (i >= len - 5)
8089 return;
8090
8091 s += i + 5;
8092 sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8093
8094 netif_printk(np, probe, KERN_DEBUG, np->dev,
8095 "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8096 vpd->fcode_major, vpd->fcode_minor);
8097 if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8098 (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8099 vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8100 np->flags |= NIU_FLAGS_VPD_VALID;
8101 }
8102
8103 /* ESPC_PIO_EN_ENABLE must be set */
niu_pci_vpd_scan_props(struct niu * np,u32 start,u32 end)8104 static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
8105 {
8106 unsigned int found_mask = 0;
8107 #define FOUND_MASK_MODEL 0x00000001
8108 #define FOUND_MASK_BMODEL 0x00000002
8109 #define FOUND_MASK_VERS 0x00000004
8110 #define FOUND_MASK_MAC 0x00000008
8111 #define FOUND_MASK_NMAC 0x00000010
8112 #define FOUND_MASK_PHY 0x00000020
8113 #define FOUND_MASK_ALL 0x0000003f
8114
8115 netif_printk(np, probe, KERN_DEBUG, np->dev,
8116 "VPD_SCAN: start[%x] end[%x]\n", start, end);
8117 while (start < end) {
8118 int len, err, prop_len;
8119 char namebuf[64];
8120 u8 *prop_buf;
8121 int max_len;
8122
8123 if (found_mask == FOUND_MASK_ALL) {
8124 niu_vpd_parse_version(np);
8125 return 1;
8126 }
8127
8128 err = niu_pci_eeprom_read(np, start + 2);
8129 if (err < 0)
8130 return err;
8131 len = err;
8132 start += 3;
8133
8134 prop_len = niu_pci_eeprom_read(np, start + 4);
8135 if (prop_len < 0)
8136 return prop_len;
8137 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8138 if (err < 0)
8139 return err;
8140
8141 prop_buf = NULL;
8142 max_len = 0;
8143 if (!strcmp(namebuf, "model")) {
8144 prop_buf = np->vpd.model;
8145 max_len = NIU_VPD_MODEL_MAX;
8146 found_mask |= FOUND_MASK_MODEL;
8147 } else if (!strcmp(namebuf, "board-model")) {
8148 prop_buf = np->vpd.board_model;
8149 max_len = NIU_VPD_BD_MODEL_MAX;
8150 found_mask |= FOUND_MASK_BMODEL;
8151 } else if (!strcmp(namebuf, "version")) {
8152 prop_buf = np->vpd.version;
8153 max_len = NIU_VPD_VERSION_MAX;
8154 found_mask |= FOUND_MASK_VERS;
8155 } else if (!strcmp(namebuf, "local-mac-address")) {
8156 prop_buf = np->vpd.local_mac;
8157 max_len = ETH_ALEN;
8158 found_mask |= FOUND_MASK_MAC;
8159 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8160 prop_buf = &np->vpd.mac_num;
8161 max_len = 1;
8162 found_mask |= FOUND_MASK_NMAC;
8163 } else if (!strcmp(namebuf, "phy-type")) {
8164 prop_buf = np->vpd.phy_type;
8165 max_len = NIU_VPD_PHY_TYPE_MAX;
8166 found_mask |= FOUND_MASK_PHY;
8167 }
8168
8169 if (max_len && prop_len > max_len) {
8170 dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8171 return -EINVAL;
8172 }
8173
8174 if (prop_buf) {
8175 u32 off = start + 5 + err;
8176 int i;
8177
8178 netif_printk(np, probe, KERN_DEBUG, np->dev,
8179 "VPD_SCAN: Reading in property [%s] len[%d]\n",
8180 namebuf, prop_len);
8181 for (i = 0; i < prop_len; i++) {
8182 err = niu_pci_eeprom_read(np, off + i);
8183 if (err < 0)
8184 return err;
8185 *prop_buf++ = err;
8186 }
8187 }
8188
8189 start += len;
8190 }
8191
8192 return 0;
8193 }
8194
8195 /* ESPC_PIO_EN_ENABLE must be set */
niu_pci_vpd_fetch(struct niu * np,u32 start)8196 static int niu_pci_vpd_fetch(struct niu *np, u32 start)
8197 {
8198 u32 offset;
8199 int err;
8200
8201 err = niu_pci_eeprom_read16_swp(np, start + 1);
8202 if (err < 0)
8203 return err;
8204
8205 offset = err + 3;
8206
8207 while (start + offset < ESPC_EEPROM_SIZE) {
8208 u32 here = start + offset;
8209 u32 end;
8210
8211 err = niu_pci_eeprom_read(np, here);
8212 if (err < 0)
8213 return err;
8214 if (err != 0x90)
8215 return -EINVAL;
8216
8217 err = niu_pci_eeprom_read16_swp(np, here + 1);
8218 if (err < 0)
8219 return err;
8220
8221 here = start + offset + 3;
8222 end = start + offset + err;
8223
8224 offset += err;
8225
8226 err = niu_pci_vpd_scan_props(np, here, end);
8227 if (err < 0)
8228 return err;
8229 /* ret == 1 is not an error */
8230 if (err == 1)
8231 return 0;
8232 }
8233 return 0;
8234 }
8235
8236 /* ESPC_PIO_EN_ENABLE must be set */
niu_pci_vpd_offset(struct niu * np)8237 static u32 niu_pci_vpd_offset(struct niu *np)
8238 {
8239 u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8240 int err;
8241
8242 while (start < end) {
8243 ret = start;
8244
8245 /* ROM header signature? */
8246 err = niu_pci_eeprom_read16(np, start + 0);
8247 if (err != 0x55aa)
8248 return 0;
8249
8250 /* Apply offset to PCI data structure. */
8251 err = niu_pci_eeprom_read16(np, start + 23);
8252 if (err < 0)
8253 return 0;
8254 start += err;
8255
8256 /* Check for "PCIR" signature. */
8257 err = niu_pci_eeprom_read16(np, start + 0);
8258 if (err != 0x5043)
8259 return 0;
8260 err = niu_pci_eeprom_read16(np, start + 2);
8261 if (err != 0x4952)
8262 return 0;
8263
8264 /* Check for OBP image type. */
8265 err = niu_pci_eeprom_read(np, start + 20);
8266 if (err < 0)
8267 return 0;
8268 if (err != 0x01) {
8269 err = niu_pci_eeprom_read(np, ret + 2);
8270 if (err < 0)
8271 return 0;
8272
8273 start = ret + (err * 512);
8274 continue;
8275 }
8276
8277 err = niu_pci_eeprom_read16_swp(np, start + 8);
8278 if (err < 0)
8279 return err;
8280 ret += err;
8281
8282 err = niu_pci_eeprom_read(np, ret + 0);
8283 if (err != 0x82)
8284 return 0;
8285
8286 return ret;
8287 }
8288
8289 return 0;
8290 }
8291
niu_phy_type_prop_decode(struct niu * np,const char * phy_prop)8292 static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
8293 {
8294 if (!strcmp(phy_prop, "mif")) {
8295 /* 1G copper, MII */
8296 np->flags &= ~(NIU_FLAGS_FIBER |
8297 NIU_FLAGS_10G);
8298 np->mac_xcvr = MAC_XCVR_MII;
8299 } else if (!strcmp(phy_prop, "xgf")) {
8300 /* 10G fiber, XPCS */
8301 np->flags |= (NIU_FLAGS_10G |
8302 NIU_FLAGS_FIBER);
8303 np->mac_xcvr = MAC_XCVR_XPCS;
8304 } else if (!strcmp(phy_prop, "pcs")) {
8305 /* 1G fiber, PCS */
8306 np->flags &= ~NIU_FLAGS_10G;
8307 np->flags |= NIU_FLAGS_FIBER;
8308 np->mac_xcvr = MAC_XCVR_PCS;
8309 } else if (!strcmp(phy_prop, "xgc")) {
8310 /* 10G copper, XPCS */
8311 np->flags |= NIU_FLAGS_10G;
8312 np->flags &= ~NIU_FLAGS_FIBER;
8313 np->mac_xcvr = MAC_XCVR_XPCS;
8314 } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8315 /* 10G Serdes or 1G Serdes, default to 10G */
8316 np->flags |= NIU_FLAGS_10G;
8317 np->flags &= ~NIU_FLAGS_FIBER;
8318 np->flags |= NIU_FLAGS_XCVR_SERDES;
8319 np->mac_xcvr = MAC_XCVR_XPCS;
8320 } else {
8321 return -EINVAL;
8322 }
8323 return 0;
8324 }
8325
niu_pci_vpd_get_nports(struct niu * np)8326 static int niu_pci_vpd_get_nports(struct niu *np)
8327 {
8328 int ports = 0;
8329
8330 if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8331 (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8332 (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8333 (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8334 (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8335 ports = 4;
8336 } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8337 (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8338 (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8339 (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8340 ports = 2;
8341 }
8342
8343 return ports;
8344 }
8345
niu_pci_vpd_validate(struct niu * np)8346 static void niu_pci_vpd_validate(struct niu *np)
8347 {
8348 struct net_device *dev = np->dev;
8349 struct niu_vpd *vpd = &np->vpd;
8350 u8 addr[ETH_ALEN];
8351 u8 val8;
8352
8353 if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8354 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8355
8356 np->flags &= ~NIU_FLAGS_VPD_VALID;
8357 return;
8358 }
8359
8360 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8361 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8362 np->flags |= NIU_FLAGS_10G;
8363 np->flags &= ~NIU_FLAGS_FIBER;
8364 np->flags |= NIU_FLAGS_XCVR_SERDES;
8365 np->mac_xcvr = MAC_XCVR_PCS;
8366 if (np->port > 1) {
8367 np->flags |= NIU_FLAGS_FIBER;
8368 np->flags &= ~NIU_FLAGS_10G;
8369 }
8370 if (np->flags & NIU_FLAGS_10G)
8371 np->mac_xcvr = MAC_XCVR_XPCS;
8372 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8373 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8374 NIU_FLAGS_HOTPLUG_PHY);
8375 } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8376 dev_err(np->device, "Illegal phy string [%s]\n",
8377 np->vpd.phy_type);
8378 dev_err(np->device, "Falling back to SPROM\n");
8379 np->flags &= ~NIU_FLAGS_VPD_VALID;
8380 return;
8381 }
8382
8383 ether_addr_copy(addr, vpd->local_mac);
8384
8385 val8 = addr[5];
8386 addr[5] += np->port;
8387 if (addr[5] < val8)
8388 addr[4]++;
8389
8390 eth_hw_addr_set(dev, addr);
8391 }
8392
niu_pci_probe_sprom(struct niu * np)8393 static int niu_pci_probe_sprom(struct niu *np)
8394 {
8395 struct net_device *dev = np->dev;
8396 u8 addr[ETH_ALEN];
8397 int len, i;
8398 u64 val, sum;
8399 u8 val8;
8400
8401 val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8402 val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8403 len = val / 4;
8404
8405 np->eeprom_len = len;
8406
8407 netif_printk(np, probe, KERN_DEBUG, np->dev,
8408 "SPROM: Image size %llu\n", (unsigned long long)val);
8409
8410 sum = 0;
8411 for (i = 0; i < len; i++) {
8412 val = nr64(ESPC_NCR(i));
8413 sum += (val >> 0) & 0xff;
8414 sum += (val >> 8) & 0xff;
8415 sum += (val >> 16) & 0xff;
8416 sum += (val >> 24) & 0xff;
8417 }
8418 netif_printk(np, probe, KERN_DEBUG, np->dev,
8419 "SPROM: Checksum %x\n", (int)(sum & 0xff));
8420 if ((sum & 0xff) != 0xab) {
8421 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8422 return -EINVAL;
8423 }
8424
8425 val = nr64(ESPC_PHY_TYPE);
8426 switch (np->port) {
8427 case 0:
8428 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8429 ESPC_PHY_TYPE_PORT0_SHIFT;
8430 break;
8431 case 1:
8432 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8433 ESPC_PHY_TYPE_PORT1_SHIFT;
8434 break;
8435 case 2:
8436 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8437 ESPC_PHY_TYPE_PORT2_SHIFT;
8438 break;
8439 case 3:
8440 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8441 ESPC_PHY_TYPE_PORT3_SHIFT;
8442 break;
8443 default:
8444 dev_err(np->device, "Bogus port number %u\n",
8445 np->port);
8446 return -EINVAL;
8447 }
8448 netif_printk(np, probe, KERN_DEBUG, np->dev,
8449 "SPROM: PHY type %x\n", val8);
8450
8451 switch (val8) {
8452 case ESPC_PHY_TYPE_1G_COPPER:
8453 /* 1G copper, MII */
8454 np->flags &= ~(NIU_FLAGS_FIBER |
8455 NIU_FLAGS_10G);
8456 np->mac_xcvr = MAC_XCVR_MII;
8457 break;
8458
8459 case ESPC_PHY_TYPE_1G_FIBER:
8460 /* 1G fiber, PCS */
8461 np->flags &= ~NIU_FLAGS_10G;
8462 np->flags |= NIU_FLAGS_FIBER;
8463 np->mac_xcvr = MAC_XCVR_PCS;
8464 break;
8465
8466 case ESPC_PHY_TYPE_10G_COPPER:
8467 /* 10G copper, XPCS */
8468 np->flags |= NIU_FLAGS_10G;
8469 np->flags &= ~NIU_FLAGS_FIBER;
8470 np->mac_xcvr = MAC_XCVR_XPCS;
8471 break;
8472
8473 case ESPC_PHY_TYPE_10G_FIBER:
8474 /* 10G fiber, XPCS */
8475 np->flags |= (NIU_FLAGS_10G |
8476 NIU_FLAGS_FIBER);
8477 np->mac_xcvr = MAC_XCVR_XPCS;
8478 break;
8479
8480 default:
8481 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8482 return -EINVAL;
8483 }
8484
8485 val = nr64(ESPC_MAC_ADDR0);
8486 netif_printk(np, probe, KERN_DEBUG, np->dev,
8487 "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8488 addr[0] = (val >> 0) & 0xff;
8489 addr[1] = (val >> 8) & 0xff;
8490 addr[2] = (val >> 16) & 0xff;
8491 addr[3] = (val >> 24) & 0xff;
8492
8493 val = nr64(ESPC_MAC_ADDR1);
8494 netif_printk(np, probe, KERN_DEBUG, np->dev,
8495 "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8496 addr[4] = (val >> 0) & 0xff;
8497 addr[5] = (val >> 8) & 0xff;
8498
8499 if (!is_valid_ether_addr(addr)) {
8500 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8501 addr);
8502 return -EINVAL;
8503 }
8504
8505 val8 = addr[5];
8506 addr[5] += np->port;
8507 if (addr[5] < val8)
8508 addr[4]++;
8509
8510 eth_hw_addr_set(dev, addr);
8511
8512 val = nr64(ESPC_MOD_STR_LEN);
8513 netif_printk(np, probe, KERN_DEBUG, np->dev,
8514 "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8515 if (val >= 8 * 4)
8516 return -EINVAL;
8517
8518 for (i = 0; i < val; i += 4) {
8519 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8520
8521 np->vpd.model[i + 3] = (tmp >> 0) & 0xff;
8522 np->vpd.model[i + 2] = (tmp >> 8) & 0xff;
8523 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8524 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8525 }
8526 np->vpd.model[val] = '\0';
8527
8528 val = nr64(ESPC_BD_MOD_STR_LEN);
8529 netif_printk(np, probe, KERN_DEBUG, np->dev,
8530 "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8531 if (val >= 4 * 4)
8532 return -EINVAL;
8533
8534 for (i = 0; i < val; i += 4) {
8535 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8536
8537 np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff;
8538 np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff;
8539 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8540 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8541 }
8542 np->vpd.board_model[val] = '\0';
8543
8544 np->vpd.mac_num =
8545 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8546 netif_printk(np, probe, KERN_DEBUG, np->dev,
8547 "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8548
8549 return 0;
8550 }
8551
niu_get_and_validate_port(struct niu * np)8552 static int niu_get_and_validate_port(struct niu *np)
8553 {
8554 struct niu_parent *parent = np->parent;
8555
8556 if (np->port <= 1)
8557 np->flags |= NIU_FLAGS_XMAC;
8558
8559 if (!parent->num_ports) {
8560 if (parent->plat_type == PLAT_TYPE_NIU) {
8561 parent->num_ports = 2;
8562 } else {
8563 parent->num_ports = niu_pci_vpd_get_nports(np);
8564 if (!parent->num_ports) {
8565 /* Fall back to SPROM as last resort.
8566 * This will fail on most cards.
8567 */
8568 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8569 ESPC_NUM_PORTS_MACS_VAL;
8570
8571 /* All of the current probing methods fail on
8572 * Maramba on-board parts.
8573 */
8574 if (!parent->num_ports)
8575 parent->num_ports = 4;
8576 }
8577 }
8578 }
8579
8580 if (np->port >= parent->num_ports)
8581 return -ENODEV;
8582
8583 return 0;
8584 }
8585
phy_record(struct niu_parent * parent,struct phy_probe_info * p,int dev_id_1,int dev_id_2,u8 phy_port,int type)8586 static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
8587 int dev_id_1, int dev_id_2, u8 phy_port, int type)
8588 {
8589 u32 id = (dev_id_1 << 16) | dev_id_2;
8590 u8 idx;
8591
8592 if (dev_id_1 < 0 || dev_id_2 < 0)
8593 return 0;
8594 if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8595 /* Because of the NIU_PHY_ID_MASK being applied, the 8704
8596 * test covers the 8706 as well.
8597 */
8598 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8599 ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8600 return 0;
8601 } else {
8602 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8603 return 0;
8604 }
8605
8606 pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8607 parent->index, id,
8608 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8609 type == PHY_TYPE_PCS ? "PCS" : "MII",
8610 phy_port);
8611
8612 if (p->cur[type] >= NIU_MAX_PORTS) {
8613 pr_err("Too many PHY ports\n");
8614 return -EINVAL;
8615 }
8616 idx = p->cur[type];
8617 p->phy_id[type][idx] = id;
8618 p->phy_port[type][idx] = phy_port;
8619 p->cur[type] = idx + 1;
8620 return 0;
8621 }
8622
port_has_10g(struct phy_probe_info * p,int port)8623 static int port_has_10g(struct phy_probe_info *p, int port)
8624 {
8625 int i;
8626
8627 for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8628 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8629 return 1;
8630 }
8631 for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8632 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8633 return 1;
8634 }
8635
8636 return 0;
8637 }
8638
count_10g_ports(struct phy_probe_info * p,int * lowest)8639 static int count_10g_ports(struct phy_probe_info *p, int *lowest)
8640 {
8641 int port, cnt;
8642
8643 cnt = 0;
8644 *lowest = 32;
8645 for (port = 8; port < 32; port++) {
8646 if (port_has_10g(p, port)) {
8647 if (!cnt)
8648 *lowest = port;
8649 cnt++;
8650 }
8651 }
8652
8653 return cnt;
8654 }
8655
count_1g_ports(struct phy_probe_info * p,int * lowest)8656 static int count_1g_ports(struct phy_probe_info *p, int *lowest)
8657 {
8658 *lowest = 32;
8659 if (p->cur[PHY_TYPE_MII])
8660 *lowest = p->phy_port[PHY_TYPE_MII][0];
8661
8662 return p->cur[PHY_TYPE_MII];
8663 }
8664
niu_n2_divide_channels(struct niu_parent * parent)8665 static void niu_n2_divide_channels(struct niu_parent *parent)
8666 {
8667 int num_ports = parent->num_ports;
8668 int i;
8669
8670 for (i = 0; i < num_ports; i++) {
8671 parent->rxchan_per_port[i] = (16 / num_ports);
8672 parent->txchan_per_port[i] = (16 / num_ports);
8673
8674 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8675 parent->index, i,
8676 parent->rxchan_per_port[i],
8677 parent->txchan_per_port[i]);
8678 }
8679 }
8680
niu_divide_channels(struct niu_parent * parent,int num_10g,int num_1g)8681 static void niu_divide_channels(struct niu_parent *parent,
8682 int num_10g, int num_1g)
8683 {
8684 int num_ports = parent->num_ports;
8685 int rx_chans_per_10g, rx_chans_per_1g;
8686 int tx_chans_per_10g, tx_chans_per_1g;
8687 int i, tot_rx, tot_tx;
8688
8689 if (!num_10g || !num_1g) {
8690 rx_chans_per_10g = rx_chans_per_1g =
8691 (NIU_NUM_RXCHAN / num_ports);
8692 tx_chans_per_10g = tx_chans_per_1g =
8693 (NIU_NUM_TXCHAN / num_ports);
8694 } else {
8695 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8696 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8697 (rx_chans_per_1g * num_1g)) /
8698 num_10g;
8699
8700 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8701 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8702 (tx_chans_per_1g * num_1g)) /
8703 num_10g;
8704 }
8705
8706 tot_rx = tot_tx = 0;
8707 for (i = 0; i < num_ports; i++) {
8708 int type = phy_decode(parent->port_phy, i);
8709
8710 if (type == PORT_TYPE_10G) {
8711 parent->rxchan_per_port[i] = rx_chans_per_10g;
8712 parent->txchan_per_port[i] = tx_chans_per_10g;
8713 } else {
8714 parent->rxchan_per_port[i] = rx_chans_per_1g;
8715 parent->txchan_per_port[i] = tx_chans_per_1g;
8716 }
8717 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8718 parent->index, i,
8719 parent->rxchan_per_port[i],
8720 parent->txchan_per_port[i]);
8721 tot_rx += parent->rxchan_per_port[i];
8722 tot_tx += parent->txchan_per_port[i];
8723 }
8724
8725 if (tot_rx > NIU_NUM_RXCHAN) {
8726 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8727 parent->index, tot_rx);
8728 for (i = 0; i < num_ports; i++)
8729 parent->rxchan_per_port[i] = 1;
8730 }
8731 if (tot_tx > NIU_NUM_TXCHAN) {
8732 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8733 parent->index, tot_tx);
8734 for (i = 0; i < num_ports; i++)
8735 parent->txchan_per_port[i] = 1;
8736 }
8737 if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8738 pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8739 parent->index, tot_rx, tot_tx);
8740 }
8741 }
8742
niu_divide_rdc_groups(struct niu_parent * parent,int num_10g,int num_1g)8743 static void niu_divide_rdc_groups(struct niu_parent *parent,
8744 int num_10g, int num_1g)
8745 {
8746 int i, num_ports = parent->num_ports;
8747 int rdc_group, rdc_groups_per_port;
8748 int rdc_channel_base;
8749
8750 rdc_group = 0;
8751 rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8752
8753 rdc_channel_base = 0;
8754
8755 for (i = 0; i < num_ports; i++) {
8756 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8757 int grp, num_channels = parent->rxchan_per_port[i];
8758 int this_channel_offset;
8759
8760 tp->first_table_num = rdc_group;
8761 tp->num_tables = rdc_groups_per_port;
8762 this_channel_offset = 0;
8763 for (grp = 0; grp < tp->num_tables; grp++) {
8764 struct rdc_table *rt = &tp->tables[grp];
8765 int slot;
8766
8767 pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8768 parent->index, i, tp->first_table_num + grp);
8769 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8770 rt->rxdma_channel[slot] =
8771 rdc_channel_base + this_channel_offset;
8772
8773 pr_cont("%d ", rt->rxdma_channel[slot]);
8774
8775 if (++this_channel_offset == num_channels)
8776 this_channel_offset = 0;
8777 }
8778 pr_cont("]\n");
8779 }
8780
8781 parent->rdc_default[i] = rdc_channel_base;
8782
8783 rdc_channel_base += num_channels;
8784 rdc_group += rdc_groups_per_port;
8785 }
8786 }
8787
fill_phy_probe_info(struct niu * np,struct niu_parent * parent,struct phy_probe_info * info)8788 static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
8789 struct phy_probe_info *info)
8790 {
8791 unsigned long flags;
8792 int port, err;
8793
8794 memset(info, 0, sizeof(*info));
8795
8796 /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */
8797 niu_lock_parent(np, flags);
8798 err = 0;
8799 for (port = 8; port < 32; port++) {
8800 int dev_id_1, dev_id_2;
8801
8802 dev_id_1 = mdio_read(np, port,
8803 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8804 dev_id_2 = mdio_read(np, port,
8805 NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8806 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8807 PHY_TYPE_PMA_PMD);
8808 if (err)
8809 break;
8810 dev_id_1 = mdio_read(np, port,
8811 NIU_PCS_DEV_ADDR, MII_PHYSID1);
8812 dev_id_2 = mdio_read(np, port,
8813 NIU_PCS_DEV_ADDR, MII_PHYSID2);
8814 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8815 PHY_TYPE_PCS);
8816 if (err)
8817 break;
8818 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8819 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8820 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8821 PHY_TYPE_MII);
8822 if (err)
8823 break;
8824 }
8825 niu_unlock_parent(np, flags);
8826
8827 return err;
8828 }
8829
walk_phys(struct niu * np,struct niu_parent * parent)8830 static int walk_phys(struct niu *np, struct niu_parent *parent)
8831 {
8832 struct phy_probe_info *info = &parent->phy_probe_info;
8833 int lowest_10g, lowest_1g;
8834 int num_10g, num_1g;
8835 u32 val;
8836 int err;
8837
8838 num_10g = num_1g = 0;
8839
8840 if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8841 !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8842 num_10g = 0;
8843 num_1g = 2;
8844 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8845 parent->num_ports = 4;
8846 val = (phy_encode(PORT_TYPE_1G, 0) |
8847 phy_encode(PORT_TYPE_1G, 1) |
8848 phy_encode(PORT_TYPE_1G, 2) |
8849 phy_encode(PORT_TYPE_1G, 3));
8850 } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8851 num_10g = 2;
8852 num_1g = 0;
8853 parent->num_ports = 2;
8854 val = (phy_encode(PORT_TYPE_10G, 0) |
8855 phy_encode(PORT_TYPE_10G, 1));
8856 } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8857 (parent->plat_type == PLAT_TYPE_NIU)) {
8858 /* this is the Monza case */
8859 if (np->flags & NIU_FLAGS_10G) {
8860 val = (phy_encode(PORT_TYPE_10G, 0) |
8861 phy_encode(PORT_TYPE_10G, 1));
8862 } else {
8863 val = (phy_encode(PORT_TYPE_1G, 0) |
8864 phy_encode(PORT_TYPE_1G, 1));
8865 }
8866 } else {
8867 err = fill_phy_probe_info(np, parent, info);
8868 if (err)
8869 return err;
8870
8871 num_10g = count_10g_ports(info, &lowest_10g);
8872 num_1g = count_1g_ports(info, &lowest_1g);
8873
8874 switch ((num_10g << 4) | num_1g) {
8875 case 0x24:
8876 if (lowest_1g == 10)
8877 parent->plat_type = PLAT_TYPE_VF_P0;
8878 else if (lowest_1g == 26)
8879 parent->plat_type = PLAT_TYPE_VF_P1;
8880 else
8881 goto unknown_vg_1g_port;
8882
8883 fallthrough;
8884 case 0x22:
8885 val = (phy_encode(PORT_TYPE_10G, 0) |
8886 phy_encode(PORT_TYPE_10G, 1) |
8887 phy_encode(PORT_TYPE_1G, 2) |
8888 phy_encode(PORT_TYPE_1G, 3));
8889 break;
8890
8891 case 0x20:
8892 val = (phy_encode(PORT_TYPE_10G, 0) |
8893 phy_encode(PORT_TYPE_10G, 1));
8894 break;
8895
8896 case 0x10:
8897 val = phy_encode(PORT_TYPE_10G, np->port);
8898 break;
8899
8900 case 0x14:
8901 if (lowest_1g == 10)
8902 parent->plat_type = PLAT_TYPE_VF_P0;
8903 else if (lowest_1g == 26)
8904 parent->plat_type = PLAT_TYPE_VF_P1;
8905 else
8906 goto unknown_vg_1g_port;
8907
8908 fallthrough;
8909 case 0x13:
8910 if ((lowest_10g & 0x7) == 0)
8911 val = (phy_encode(PORT_TYPE_10G, 0) |
8912 phy_encode(PORT_TYPE_1G, 1) |
8913 phy_encode(PORT_TYPE_1G, 2) |
8914 phy_encode(PORT_TYPE_1G, 3));
8915 else
8916 val = (phy_encode(PORT_TYPE_1G, 0) |
8917 phy_encode(PORT_TYPE_10G, 1) |
8918 phy_encode(PORT_TYPE_1G, 2) |
8919 phy_encode(PORT_TYPE_1G, 3));
8920 break;
8921
8922 case 0x04:
8923 if (lowest_1g == 10)
8924 parent->plat_type = PLAT_TYPE_VF_P0;
8925 else if (lowest_1g == 26)
8926 parent->plat_type = PLAT_TYPE_VF_P1;
8927 else
8928 goto unknown_vg_1g_port;
8929
8930 val = (phy_encode(PORT_TYPE_1G, 0) |
8931 phy_encode(PORT_TYPE_1G, 1) |
8932 phy_encode(PORT_TYPE_1G, 2) |
8933 phy_encode(PORT_TYPE_1G, 3));
8934 break;
8935
8936 default:
8937 pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8938 num_10g, num_1g);
8939 return -EINVAL;
8940 }
8941 }
8942
8943 parent->port_phy = val;
8944
8945 if (parent->plat_type == PLAT_TYPE_NIU)
8946 niu_n2_divide_channels(parent);
8947 else
8948 niu_divide_channels(parent, num_10g, num_1g);
8949
8950 niu_divide_rdc_groups(parent, num_10g, num_1g);
8951
8952 return 0;
8953
8954 unknown_vg_1g_port:
8955 pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8956 return -EINVAL;
8957 }
8958
niu_probe_ports(struct niu * np)8959 static int niu_probe_ports(struct niu *np)
8960 {
8961 struct niu_parent *parent = np->parent;
8962 int err, i;
8963
8964 if (parent->port_phy == PORT_PHY_UNKNOWN) {
8965 err = walk_phys(np, parent);
8966 if (err)
8967 return err;
8968
8969 niu_set_ldg_timer_res(np, 2);
8970 for (i = 0; i <= LDN_MAX; i++)
8971 niu_ldn_irq_enable(np, i, 0);
8972 }
8973
8974 if (parent->port_phy == PORT_PHY_INVALID)
8975 return -EINVAL;
8976
8977 return 0;
8978 }
8979
niu_classifier_swstate_init(struct niu * np)8980 static int niu_classifier_swstate_init(struct niu *np)
8981 {
8982 struct niu_classifier *cp = &np->clas;
8983
8984 cp->tcam_top = (u16) np->port;
8985 cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8986 cp->h1_init = 0xffffffff;
8987 cp->h2_init = 0xffff;
8988
8989 return fflp_early_init(np);
8990 }
8991
niu_link_config_init(struct niu * np)8992 static void niu_link_config_init(struct niu *np)
8993 {
8994 struct niu_link_config *lp = &np->link_config;
8995
8996 lp->advertising = (ADVERTISED_10baseT_Half |
8997 ADVERTISED_10baseT_Full |
8998 ADVERTISED_100baseT_Half |
8999 ADVERTISED_100baseT_Full |
9000 ADVERTISED_1000baseT_Half |
9001 ADVERTISED_1000baseT_Full |
9002 ADVERTISED_10000baseT_Full |
9003 ADVERTISED_Autoneg);
9004 lp->speed = lp->active_speed = SPEED_INVALID;
9005 lp->duplex = DUPLEX_FULL;
9006 lp->active_duplex = DUPLEX_INVALID;
9007 lp->autoneg = 1;
9008 #if 0
9009 lp->loopback_mode = LOOPBACK_MAC;
9010 lp->active_speed = SPEED_10000;
9011 lp->active_duplex = DUPLEX_FULL;
9012 #else
9013 lp->loopback_mode = LOOPBACK_DISABLED;
9014 #endif
9015 }
9016
niu_init_mac_ipp_pcs_base(struct niu * np)9017 static int niu_init_mac_ipp_pcs_base(struct niu *np)
9018 {
9019 switch (np->port) {
9020 case 0:
9021 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9022 np->ipp_off = 0x00000;
9023 np->pcs_off = 0x04000;
9024 np->xpcs_off = 0x02000;
9025 break;
9026
9027 case 1:
9028 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9029 np->ipp_off = 0x08000;
9030 np->pcs_off = 0x0a000;
9031 np->xpcs_off = 0x08000;
9032 break;
9033
9034 case 2:
9035 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9036 np->ipp_off = 0x04000;
9037 np->pcs_off = 0x0e000;
9038 np->xpcs_off = ~0UL;
9039 break;
9040
9041 case 3:
9042 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9043 np->ipp_off = 0x0c000;
9044 np->pcs_off = 0x12000;
9045 np->xpcs_off = ~0UL;
9046 break;
9047
9048 default:
9049 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9050 return -EINVAL;
9051 }
9052
9053 return 0;
9054 }
9055
niu_try_msix(struct niu * np,u8 * ldg_num_map)9056 static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
9057 {
9058 struct msix_entry msi_vec[NIU_NUM_LDG];
9059 struct niu_parent *parent = np->parent;
9060 struct pci_dev *pdev = np->pdev;
9061 int i, num_irqs;
9062 u8 first_ldg;
9063
9064 first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9065 for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9066 ldg_num_map[i] = first_ldg + i;
9067
9068 num_irqs = (parent->rxchan_per_port[np->port] +
9069 parent->txchan_per_port[np->port] +
9070 (np->port == 0 ? 3 : 1));
9071 BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9072
9073 for (i = 0; i < num_irqs; i++) {
9074 msi_vec[i].vector = 0;
9075 msi_vec[i].entry = i;
9076 }
9077
9078 num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
9079 if (num_irqs < 0) {
9080 np->flags &= ~NIU_FLAGS_MSIX;
9081 return;
9082 }
9083
9084 np->flags |= NIU_FLAGS_MSIX;
9085 for (i = 0; i < num_irqs; i++)
9086 np->ldg[i].irq = msi_vec[i].vector;
9087 np->num_ldg = num_irqs;
9088 }
9089
niu_n2_irq_init(struct niu * np,u8 * ldg_num_map)9090 static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9091 {
9092 #ifdef CONFIG_SPARC64
9093 struct platform_device *op = np->op;
9094 const u32 *int_prop;
9095 int i;
9096
9097 int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9098 if (!int_prop)
9099 return -ENODEV;
9100
9101 for (i = 0; i < op->archdata.num_irqs; i++) {
9102 ldg_num_map[i] = int_prop[i];
9103 np->ldg[i].irq = op->archdata.irqs[i];
9104 }
9105
9106 np->num_ldg = op->archdata.num_irqs;
9107
9108 return 0;
9109 #else
9110 return -EINVAL;
9111 #endif
9112 }
9113
niu_ldg_init(struct niu * np)9114 static int niu_ldg_init(struct niu *np)
9115 {
9116 struct niu_parent *parent = np->parent;
9117 u8 ldg_num_map[NIU_NUM_LDG];
9118 int first_chan, num_chan;
9119 int i, err, ldg_rotor;
9120 u8 port;
9121
9122 np->num_ldg = 1;
9123 np->ldg[0].irq = np->dev->irq;
9124 if (parent->plat_type == PLAT_TYPE_NIU) {
9125 err = niu_n2_irq_init(np, ldg_num_map);
9126 if (err)
9127 return err;
9128 } else
9129 niu_try_msix(np, ldg_num_map);
9130
9131 port = np->port;
9132 for (i = 0; i < np->num_ldg; i++) {
9133 struct niu_ldg *lp = &np->ldg[i];
9134
9135 netif_napi_add(np->dev, &lp->napi, niu_poll);
9136
9137 lp->np = np;
9138 lp->ldg_num = ldg_num_map[i];
9139 lp->timer = 2; /* XXX */
9140
9141 /* On N2 NIU the firmware has setup the SID mappings so they go
9142 * to the correct values that will route the LDG to the proper
9143 * interrupt in the NCU interrupt table.
9144 */
9145 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9146 err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9147 if (err)
9148 return err;
9149 }
9150 }
9151
9152 /* We adopt the LDG assignment ordering used by the N2 NIU
9153 * 'interrupt' properties because that simplifies a lot of
9154 * things. This ordering is:
9155 *
9156 * MAC
9157 * MIF (if port zero)
9158 * SYSERR (if port zero)
9159 * RX channels
9160 * TX channels
9161 */
9162
9163 ldg_rotor = 0;
9164
9165 err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9166 LDN_MAC(port));
9167 if (err)
9168 return err;
9169
9170 ldg_rotor++;
9171 if (ldg_rotor == np->num_ldg)
9172 ldg_rotor = 0;
9173
9174 if (port == 0) {
9175 err = niu_ldg_assign_ldn(np, parent,
9176 ldg_num_map[ldg_rotor],
9177 LDN_MIF);
9178 if (err)
9179 return err;
9180
9181 ldg_rotor++;
9182 if (ldg_rotor == np->num_ldg)
9183 ldg_rotor = 0;
9184
9185 err = niu_ldg_assign_ldn(np, parent,
9186 ldg_num_map[ldg_rotor],
9187 LDN_DEVICE_ERROR);
9188 if (err)
9189 return err;
9190
9191 ldg_rotor++;
9192 if (ldg_rotor == np->num_ldg)
9193 ldg_rotor = 0;
9194
9195 }
9196
9197 first_chan = 0;
9198 for (i = 0; i < port; i++)
9199 first_chan += parent->rxchan_per_port[i];
9200 num_chan = parent->rxchan_per_port[port];
9201
9202 for (i = first_chan; i < (first_chan + num_chan); i++) {
9203 err = niu_ldg_assign_ldn(np, parent,
9204 ldg_num_map[ldg_rotor],
9205 LDN_RXDMA(i));
9206 if (err)
9207 return err;
9208 ldg_rotor++;
9209 if (ldg_rotor == np->num_ldg)
9210 ldg_rotor = 0;
9211 }
9212
9213 first_chan = 0;
9214 for (i = 0; i < port; i++)
9215 first_chan += parent->txchan_per_port[i];
9216 num_chan = parent->txchan_per_port[port];
9217 for (i = first_chan; i < (first_chan + num_chan); i++) {
9218 err = niu_ldg_assign_ldn(np, parent,
9219 ldg_num_map[ldg_rotor],
9220 LDN_TXDMA(i));
9221 if (err)
9222 return err;
9223 ldg_rotor++;
9224 if (ldg_rotor == np->num_ldg)
9225 ldg_rotor = 0;
9226 }
9227
9228 return 0;
9229 }
9230
niu_ldg_free(struct niu * np)9231 static void niu_ldg_free(struct niu *np)
9232 {
9233 if (np->flags & NIU_FLAGS_MSIX)
9234 pci_disable_msix(np->pdev);
9235 }
9236
niu_get_of_props(struct niu * np)9237 static int niu_get_of_props(struct niu *np)
9238 {
9239 #ifdef CONFIG_SPARC64
9240 struct net_device *dev = np->dev;
9241 struct device_node *dp;
9242 const char *phy_type;
9243 const u8 *mac_addr;
9244 const char *model;
9245 int prop_len;
9246
9247 if (np->parent->plat_type == PLAT_TYPE_NIU)
9248 dp = np->op->dev.of_node;
9249 else
9250 dp = pci_device_to_OF_node(np->pdev);
9251
9252 phy_type = of_get_property(dp, "phy-type", NULL);
9253 if (!phy_type) {
9254 netdev_err(dev, "%pOF: OF node lacks phy-type property\n", dp);
9255 return -EINVAL;
9256 }
9257
9258 if (!strcmp(phy_type, "none"))
9259 return -ENODEV;
9260
9261 strcpy(np->vpd.phy_type, phy_type);
9262
9263 if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9264 netdev_err(dev, "%pOF: Illegal phy string [%s]\n",
9265 dp, np->vpd.phy_type);
9266 return -EINVAL;
9267 }
9268
9269 mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9270 if (!mac_addr) {
9271 netdev_err(dev, "%pOF: OF node lacks local-mac-address property\n",
9272 dp);
9273 return -EINVAL;
9274 }
9275 if (prop_len != dev->addr_len) {
9276 netdev_err(dev, "%pOF: OF MAC address prop len (%d) is wrong\n",
9277 dp, prop_len);
9278 }
9279 eth_hw_addr_set(dev, mac_addr);
9280 if (!is_valid_ether_addr(&dev->dev_addr[0])) {
9281 netdev_err(dev, "%pOF: OF MAC address is invalid\n", dp);
9282 netdev_err(dev, "%pOF: [ %pM ]\n", dp, dev->dev_addr);
9283 return -EINVAL;
9284 }
9285
9286 model = of_get_property(dp, "model", NULL);
9287
9288 if (model)
9289 strcpy(np->vpd.model, model);
9290
9291 if (of_property_read_bool(dp, "hot-swappable-phy")) {
9292 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9293 NIU_FLAGS_HOTPLUG_PHY);
9294 }
9295
9296 return 0;
9297 #else
9298 return -EINVAL;
9299 #endif
9300 }
9301
niu_get_invariants(struct niu * np)9302 static int niu_get_invariants(struct niu *np)
9303 {
9304 int err, have_props;
9305 u32 offset;
9306
9307 err = niu_get_of_props(np);
9308 if (err == -ENODEV)
9309 return err;
9310
9311 have_props = !err;
9312
9313 err = niu_init_mac_ipp_pcs_base(np);
9314 if (err)
9315 return err;
9316
9317 if (have_props) {
9318 err = niu_get_and_validate_port(np);
9319 if (err)
9320 return err;
9321
9322 } else {
9323 if (np->parent->plat_type == PLAT_TYPE_NIU)
9324 return -EINVAL;
9325
9326 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9327 offset = niu_pci_vpd_offset(np);
9328 netif_printk(np, probe, KERN_DEBUG, np->dev,
9329 "%s() VPD offset [%08x]\n", __func__, offset);
9330 if (offset) {
9331 err = niu_pci_vpd_fetch(np, offset);
9332 if (err < 0)
9333 return err;
9334 }
9335 nw64(ESPC_PIO_EN, 0);
9336
9337 if (np->flags & NIU_FLAGS_VPD_VALID) {
9338 niu_pci_vpd_validate(np);
9339 err = niu_get_and_validate_port(np);
9340 if (err)
9341 return err;
9342 }
9343
9344 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9345 err = niu_get_and_validate_port(np);
9346 if (err)
9347 return err;
9348 err = niu_pci_probe_sprom(np);
9349 if (err)
9350 return err;
9351 }
9352 }
9353
9354 err = niu_probe_ports(np);
9355 if (err)
9356 return err;
9357
9358 niu_ldg_init(np);
9359
9360 niu_classifier_swstate_init(np);
9361 niu_link_config_init(np);
9362
9363 err = niu_determine_phy_disposition(np);
9364 if (!err)
9365 err = niu_init_link(np);
9366
9367 return err;
9368 }
9369
9370 static LIST_HEAD(niu_parent_list);
9371 static DEFINE_MUTEX(niu_parent_lock);
9372 static int niu_parent_index;
9373
show_port_phy(struct device * dev,struct device_attribute * attr,char * buf)9374 static ssize_t show_port_phy(struct device *dev,
9375 struct device_attribute *attr, char *buf)
9376 {
9377 struct platform_device *plat_dev = to_platform_device(dev);
9378 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9379 u32 port_phy = p->port_phy;
9380 char *orig_buf = buf;
9381 int i;
9382
9383 if (port_phy == PORT_PHY_UNKNOWN ||
9384 port_phy == PORT_PHY_INVALID)
9385 return 0;
9386
9387 for (i = 0; i < p->num_ports; i++) {
9388 const char *type_str;
9389 int type;
9390
9391 type = phy_decode(port_phy, i);
9392 if (type == PORT_TYPE_10G)
9393 type_str = "10G";
9394 else
9395 type_str = "1G";
9396 buf += sprintf(buf,
9397 (i == 0) ? "%s" : " %s",
9398 type_str);
9399 }
9400 buf += sprintf(buf, "\n");
9401 return buf - orig_buf;
9402 }
9403
show_plat_type(struct device * dev,struct device_attribute * attr,char * buf)9404 static ssize_t show_plat_type(struct device *dev,
9405 struct device_attribute *attr, char *buf)
9406 {
9407 struct platform_device *plat_dev = to_platform_device(dev);
9408 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9409 const char *type_str;
9410
9411 switch (p->plat_type) {
9412 case PLAT_TYPE_ATLAS:
9413 type_str = "atlas";
9414 break;
9415 case PLAT_TYPE_NIU:
9416 type_str = "niu";
9417 break;
9418 case PLAT_TYPE_VF_P0:
9419 type_str = "vf_p0";
9420 break;
9421 case PLAT_TYPE_VF_P1:
9422 type_str = "vf_p1";
9423 break;
9424 default:
9425 type_str = "unknown";
9426 break;
9427 }
9428
9429 return sprintf(buf, "%s\n", type_str);
9430 }
9431
__show_chan_per_port(struct device * dev,struct device_attribute * attr,char * buf,int rx)9432 static ssize_t __show_chan_per_port(struct device *dev,
9433 struct device_attribute *attr, char *buf,
9434 int rx)
9435 {
9436 struct platform_device *plat_dev = to_platform_device(dev);
9437 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9438 char *orig_buf = buf;
9439 u8 *arr;
9440 int i;
9441
9442 arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9443
9444 for (i = 0; i < p->num_ports; i++) {
9445 buf += sprintf(buf,
9446 (i == 0) ? "%d" : " %d",
9447 arr[i]);
9448 }
9449 buf += sprintf(buf, "\n");
9450
9451 return buf - orig_buf;
9452 }
9453
show_rxchan_per_port(struct device * dev,struct device_attribute * attr,char * buf)9454 static ssize_t show_rxchan_per_port(struct device *dev,
9455 struct device_attribute *attr, char *buf)
9456 {
9457 return __show_chan_per_port(dev, attr, buf, 1);
9458 }
9459
show_txchan_per_port(struct device * dev,struct device_attribute * attr,char * buf)9460 static ssize_t show_txchan_per_port(struct device *dev,
9461 struct device_attribute *attr, char *buf)
9462 {
9463 return __show_chan_per_port(dev, attr, buf, 1);
9464 }
9465
show_num_ports(struct device * dev,struct device_attribute * attr,char * buf)9466 static ssize_t show_num_ports(struct device *dev,
9467 struct device_attribute *attr, char *buf)
9468 {
9469 struct platform_device *plat_dev = to_platform_device(dev);
9470 struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9471
9472 return sprintf(buf, "%d\n", p->num_ports);
9473 }
9474
9475 static struct device_attribute niu_parent_attributes[] = {
9476 __ATTR(port_phy, 0444, show_port_phy, NULL),
9477 __ATTR(plat_type, 0444, show_plat_type, NULL),
9478 __ATTR(rxchan_per_port, 0444, show_rxchan_per_port, NULL),
9479 __ATTR(txchan_per_port, 0444, show_txchan_per_port, NULL),
9480 __ATTR(num_ports, 0444, show_num_ports, NULL),
9481 {}
9482 };
9483
niu_new_parent(struct niu * np,union niu_parent_id * id,u8 ptype)9484 static struct niu_parent *niu_new_parent(struct niu *np,
9485 union niu_parent_id *id, u8 ptype)
9486 {
9487 struct platform_device *plat_dev;
9488 struct niu_parent *p;
9489 int i;
9490
9491 plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9492 NULL, 0);
9493 if (IS_ERR(plat_dev))
9494 return NULL;
9495
9496 for (i = 0; niu_parent_attributes[i].attr.name; i++) {
9497 int err = device_create_file(&plat_dev->dev,
9498 &niu_parent_attributes[i]);
9499 if (err)
9500 goto fail_unregister;
9501 }
9502
9503 p = kzalloc(sizeof(*p), GFP_KERNEL);
9504 if (!p)
9505 goto fail_unregister;
9506
9507 p->index = niu_parent_index++;
9508
9509 plat_dev->dev.platform_data = p;
9510 p->plat_dev = plat_dev;
9511
9512 memcpy(&p->id, id, sizeof(*id));
9513 p->plat_type = ptype;
9514 INIT_LIST_HEAD(&p->list);
9515 atomic_set(&p->refcnt, 0);
9516 list_add(&p->list, &niu_parent_list);
9517 spin_lock_init(&p->lock);
9518
9519 p->rxdma_clock_divider = 7500;
9520
9521 p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9522 if (p->plat_type == PLAT_TYPE_NIU)
9523 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9524
9525 for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9526 int index = i - CLASS_CODE_USER_PROG1;
9527
9528 p->tcam_key[index] = TCAM_KEY_TSEL;
9529 p->flow_key[index] = (FLOW_KEY_IPSA |
9530 FLOW_KEY_IPDA |
9531 FLOW_KEY_PROTO |
9532 (FLOW_KEY_L4_BYTE12 <<
9533 FLOW_KEY_L4_0_SHIFT) |
9534 (FLOW_KEY_L4_BYTE12 <<
9535 FLOW_KEY_L4_1_SHIFT));
9536 }
9537
9538 for (i = 0; i < LDN_MAX + 1; i++)
9539 p->ldg_map[i] = LDG_INVALID;
9540
9541 return p;
9542
9543 fail_unregister:
9544 platform_device_unregister(plat_dev);
9545 return NULL;
9546 }
9547
niu_get_parent(struct niu * np,union niu_parent_id * id,u8 ptype)9548 static struct niu_parent *niu_get_parent(struct niu *np,
9549 union niu_parent_id *id, u8 ptype)
9550 {
9551 struct niu_parent *p, *tmp;
9552 int port = np->port;
9553
9554 mutex_lock(&niu_parent_lock);
9555 p = NULL;
9556 list_for_each_entry(tmp, &niu_parent_list, list) {
9557 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9558 p = tmp;
9559 break;
9560 }
9561 }
9562 if (!p)
9563 p = niu_new_parent(np, id, ptype);
9564
9565 if (p) {
9566 char port_name[8];
9567 int err;
9568
9569 sprintf(port_name, "port%d", port);
9570 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9571 &np->device->kobj,
9572 port_name);
9573 if (!err) {
9574 p->ports[port] = np;
9575 atomic_inc(&p->refcnt);
9576 }
9577 }
9578 mutex_unlock(&niu_parent_lock);
9579
9580 return p;
9581 }
9582
niu_put_parent(struct niu * np)9583 static void niu_put_parent(struct niu *np)
9584 {
9585 struct niu_parent *p = np->parent;
9586 u8 port = np->port;
9587 char port_name[8];
9588
9589 BUG_ON(!p || p->ports[port] != np);
9590
9591 netif_printk(np, probe, KERN_DEBUG, np->dev,
9592 "%s() port[%u]\n", __func__, port);
9593
9594 sprintf(port_name, "port%d", port);
9595
9596 mutex_lock(&niu_parent_lock);
9597
9598 sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9599
9600 p->ports[port] = NULL;
9601 np->parent = NULL;
9602
9603 if (atomic_dec_and_test(&p->refcnt)) {
9604 list_del(&p->list);
9605 platform_device_unregister(p->plat_dev);
9606 }
9607
9608 mutex_unlock(&niu_parent_lock);
9609 }
9610
niu_pci_alloc_coherent(struct device * dev,size_t size,u64 * handle,gfp_t flag)9611 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9612 u64 *handle, gfp_t flag)
9613 {
9614 dma_addr_t dh;
9615 void *ret;
9616
9617 ret = dma_alloc_coherent(dev, size, &dh, flag);
9618 if (ret)
9619 *handle = dh;
9620 return ret;
9621 }
9622
niu_pci_free_coherent(struct device * dev,size_t size,void * cpu_addr,u64 handle)9623 static void niu_pci_free_coherent(struct device *dev, size_t size,
9624 void *cpu_addr, u64 handle)
9625 {
9626 dma_free_coherent(dev, size, cpu_addr, handle);
9627 }
9628
niu_pci_map_page(struct device * dev,struct page * page,unsigned long offset,size_t size,enum dma_data_direction direction)9629 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9630 unsigned long offset, size_t size,
9631 enum dma_data_direction direction)
9632 {
9633 return dma_map_page(dev, page, offset, size, direction);
9634 }
9635
niu_pci_unmap_page(struct device * dev,u64 dma_address,size_t size,enum dma_data_direction direction)9636 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9637 size_t size, enum dma_data_direction direction)
9638 {
9639 dma_unmap_page(dev, dma_address, size, direction);
9640 }
9641
niu_pci_map_single(struct device * dev,void * cpu_addr,size_t size,enum dma_data_direction direction)9642 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9643 size_t size,
9644 enum dma_data_direction direction)
9645 {
9646 return dma_map_single(dev, cpu_addr, size, direction);
9647 }
9648
niu_pci_unmap_single(struct device * dev,u64 dma_address,size_t size,enum dma_data_direction direction)9649 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9650 size_t size,
9651 enum dma_data_direction direction)
9652 {
9653 dma_unmap_single(dev, dma_address, size, direction);
9654 }
9655
niu_pci_mapping_error(struct device * dev,u64 addr)9656 static int niu_pci_mapping_error(struct device *dev, u64 addr)
9657 {
9658 return dma_mapping_error(dev, addr);
9659 }
9660
9661 static const struct niu_ops niu_pci_ops = {
9662 .alloc_coherent = niu_pci_alloc_coherent,
9663 .free_coherent = niu_pci_free_coherent,
9664 .map_page = niu_pci_map_page,
9665 .unmap_page = niu_pci_unmap_page,
9666 .map_single = niu_pci_map_single,
9667 .unmap_single = niu_pci_unmap_single,
9668 .mapping_error = niu_pci_mapping_error,
9669 };
9670
niu_driver_version(void)9671 static void niu_driver_version(void)
9672 {
9673 static int niu_version_printed;
9674
9675 if (niu_version_printed++ == 0)
9676 pr_info("%s", version);
9677 }
9678
niu_alloc_and_init(struct device * gen_dev,struct pci_dev * pdev,struct platform_device * op,const struct niu_ops * ops,u8 port)9679 static struct net_device *niu_alloc_and_init(struct device *gen_dev,
9680 struct pci_dev *pdev,
9681 struct platform_device *op,
9682 const struct niu_ops *ops, u8 port)
9683 {
9684 struct net_device *dev;
9685 struct niu *np;
9686
9687 dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9688 if (!dev)
9689 return NULL;
9690
9691 SET_NETDEV_DEV(dev, gen_dev);
9692
9693 np = netdev_priv(dev);
9694 np->dev = dev;
9695 np->pdev = pdev;
9696 np->op = op;
9697 np->device = gen_dev;
9698 np->ops = ops;
9699
9700 np->msg_enable = niu_debug;
9701
9702 spin_lock_init(&np->lock);
9703 INIT_WORK(&np->reset_task, niu_reset_task);
9704
9705 np->port = port;
9706
9707 return dev;
9708 }
9709
9710 static const struct net_device_ops niu_netdev_ops = {
9711 .ndo_open = niu_open,
9712 .ndo_stop = niu_close,
9713 .ndo_start_xmit = niu_start_xmit,
9714 .ndo_get_stats64 = niu_get_stats,
9715 .ndo_set_rx_mode = niu_set_rx_mode,
9716 .ndo_validate_addr = eth_validate_addr,
9717 .ndo_set_mac_address = niu_set_mac_addr,
9718 .ndo_eth_ioctl = niu_ioctl,
9719 .ndo_tx_timeout = niu_tx_timeout,
9720 .ndo_change_mtu = niu_change_mtu,
9721 };
9722
niu_assign_netdev_ops(struct net_device * dev)9723 static void niu_assign_netdev_ops(struct net_device *dev)
9724 {
9725 dev->netdev_ops = &niu_netdev_ops;
9726 dev->ethtool_ops = &niu_ethtool_ops;
9727 dev->watchdog_timeo = NIU_TX_TIMEOUT;
9728 }
9729
niu_device_announce(struct niu * np)9730 static void niu_device_announce(struct niu *np)
9731 {
9732 struct net_device *dev = np->dev;
9733
9734 pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9735
9736 if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9737 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9738 dev->name,
9739 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9740 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9741 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9742 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9743 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9744 np->vpd.phy_type);
9745 } else {
9746 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9747 dev->name,
9748 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9749 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9750 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9751 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9752 "COPPER")),
9753 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9754 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9755 np->vpd.phy_type);
9756 }
9757 }
9758
niu_set_basic_features(struct net_device * dev)9759 static void niu_set_basic_features(struct net_device *dev)
9760 {
9761 dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9762 dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9763 }
9764
niu_pci_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)9765 static int niu_pci_init_one(struct pci_dev *pdev,
9766 const struct pci_device_id *ent)
9767 {
9768 union niu_parent_id parent_id;
9769 struct net_device *dev;
9770 struct niu *np;
9771 int err;
9772
9773 niu_driver_version();
9774
9775 err = pci_enable_device(pdev);
9776 if (err) {
9777 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9778 return err;
9779 }
9780
9781 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9782 !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9783 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9784 err = -ENODEV;
9785 goto err_out_disable_pdev;
9786 }
9787
9788 err = pci_request_regions(pdev, DRV_MODULE_NAME);
9789 if (err) {
9790 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9791 goto err_out_disable_pdev;
9792 }
9793
9794 if (!pci_is_pcie(pdev)) {
9795 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9796 err = -ENODEV;
9797 goto err_out_free_res;
9798 }
9799
9800 dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9801 &niu_pci_ops, PCI_FUNC(pdev->devfn));
9802 if (!dev) {
9803 err = -ENOMEM;
9804 goto err_out_free_res;
9805 }
9806 np = netdev_priv(dev);
9807
9808 memset(&parent_id, 0, sizeof(parent_id));
9809 parent_id.pci.domain = pci_domain_nr(pdev->bus);
9810 parent_id.pci.bus = pdev->bus->number;
9811 parent_id.pci.device = PCI_SLOT(pdev->devfn);
9812
9813 np->parent = niu_get_parent(np, &parent_id,
9814 PLAT_TYPE_ATLAS);
9815 if (!np->parent) {
9816 err = -ENOMEM;
9817 goto err_out_free_dev;
9818 }
9819
9820 pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
9821 PCI_EXP_DEVCTL_NOSNOOP_EN,
9822 PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
9823 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
9824 PCI_EXP_DEVCTL_RELAX_EN);
9825
9826 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(44));
9827 if (!err)
9828 dev->features |= NETIF_F_HIGHDMA;
9829 if (err) {
9830 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
9831 if (err) {
9832 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9833 goto err_out_release_parent;
9834 }
9835 }
9836
9837 niu_set_basic_features(dev);
9838
9839 dev->priv_flags |= IFF_UNICAST_FLT;
9840
9841 np->regs = pci_ioremap_bar(pdev, 0);
9842 if (!np->regs) {
9843 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9844 err = -ENOMEM;
9845 goto err_out_release_parent;
9846 }
9847
9848 pci_set_master(pdev);
9849 pci_save_state(pdev);
9850
9851 dev->irq = pdev->irq;
9852
9853 /* MTU range: 68 - 9216 */
9854 dev->min_mtu = ETH_MIN_MTU;
9855 dev->max_mtu = NIU_MAX_MTU;
9856
9857 niu_assign_netdev_ops(dev);
9858
9859 err = niu_get_invariants(np);
9860 if (err) {
9861 if (err != -ENODEV)
9862 dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9863 goto err_out_iounmap;
9864 }
9865
9866 err = register_netdev(dev);
9867 if (err) {
9868 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9869 goto err_out_iounmap;
9870 }
9871
9872 pci_set_drvdata(pdev, dev);
9873
9874 niu_device_announce(np);
9875
9876 return 0;
9877
9878 err_out_iounmap:
9879 if (np->regs) {
9880 iounmap(np->regs);
9881 np->regs = NULL;
9882 }
9883
9884 err_out_release_parent:
9885 niu_put_parent(np);
9886
9887 err_out_free_dev:
9888 free_netdev(dev);
9889
9890 err_out_free_res:
9891 pci_release_regions(pdev);
9892
9893 err_out_disable_pdev:
9894 pci_disable_device(pdev);
9895
9896 return err;
9897 }
9898
niu_pci_remove_one(struct pci_dev * pdev)9899 static void niu_pci_remove_one(struct pci_dev *pdev)
9900 {
9901 struct net_device *dev = pci_get_drvdata(pdev);
9902
9903 if (dev) {
9904 struct niu *np = netdev_priv(dev);
9905
9906 unregister_netdev(dev);
9907 if (np->regs) {
9908 iounmap(np->regs);
9909 np->regs = NULL;
9910 }
9911
9912 niu_ldg_free(np);
9913
9914 niu_put_parent(np);
9915
9916 free_netdev(dev);
9917 pci_release_regions(pdev);
9918 pci_disable_device(pdev);
9919 }
9920 }
9921
niu_suspend(struct device * dev_d)9922 static int __maybe_unused niu_suspend(struct device *dev_d)
9923 {
9924 struct net_device *dev = dev_get_drvdata(dev_d);
9925 struct niu *np = netdev_priv(dev);
9926 unsigned long flags;
9927
9928 if (!netif_running(dev))
9929 return 0;
9930
9931 flush_work(&np->reset_task);
9932 niu_netif_stop(np);
9933
9934 del_timer_sync(&np->timer);
9935
9936 spin_lock_irqsave(&np->lock, flags);
9937 niu_enable_interrupts(np, 0);
9938 spin_unlock_irqrestore(&np->lock, flags);
9939
9940 netif_device_detach(dev);
9941
9942 spin_lock_irqsave(&np->lock, flags);
9943 niu_stop_hw(np);
9944 spin_unlock_irqrestore(&np->lock, flags);
9945
9946 return 0;
9947 }
9948
niu_resume(struct device * dev_d)9949 static int __maybe_unused niu_resume(struct device *dev_d)
9950 {
9951 struct net_device *dev = dev_get_drvdata(dev_d);
9952 struct niu *np = netdev_priv(dev);
9953 unsigned long flags;
9954 int err;
9955
9956 if (!netif_running(dev))
9957 return 0;
9958
9959 netif_device_attach(dev);
9960
9961 spin_lock_irqsave(&np->lock, flags);
9962
9963 err = niu_init_hw(np);
9964 if (!err) {
9965 np->timer.expires = jiffies + HZ;
9966 add_timer(&np->timer);
9967 niu_netif_start(np);
9968 }
9969
9970 spin_unlock_irqrestore(&np->lock, flags);
9971
9972 return err;
9973 }
9974
9975 static SIMPLE_DEV_PM_OPS(niu_pm_ops, niu_suspend, niu_resume);
9976
9977 static struct pci_driver niu_pci_driver = {
9978 .name = DRV_MODULE_NAME,
9979 .id_table = niu_pci_tbl,
9980 .probe = niu_pci_init_one,
9981 .remove = niu_pci_remove_one,
9982 .driver.pm = &niu_pm_ops,
9983 };
9984
9985 #ifdef CONFIG_SPARC64
niu_phys_alloc_coherent(struct device * dev,size_t size,u64 * dma_addr,gfp_t flag)9986 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9987 u64 *dma_addr, gfp_t flag)
9988 {
9989 unsigned long order = get_order(size);
9990 unsigned long page = __get_free_pages(flag, order);
9991
9992 if (page == 0UL)
9993 return NULL;
9994 memset((char *)page, 0, PAGE_SIZE << order);
9995 *dma_addr = __pa(page);
9996
9997 return (void *) page;
9998 }
9999
niu_phys_free_coherent(struct device * dev,size_t size,void * cpu_addr,u64 handle)10000 static void niu_phys_free_coherent(struct device *dev, size_t size,
10001 void *cpu_addr, u64 handle)
10002 {
10003 unsigned long order = get_order(size);
10004
10005 free_pages((unsigned long) cpu_addr, order);
10006 }
10007
niu_phys_map_page(struct device * dev,struct page * page,unsigned long offset,size_t size,enum dma_data_direction direction)10008 static u64 niu_phys_map_page(struct device *dev, struct page *page,
10009 unsigned long offset, size_t size,
10010 enum dma_data_direction direction)
10011 {
10012 return page_to_phys(page) + offset;
10013 }
10014
niu_phys_unmap_page(struct device * dev,u64 dma_address,size_t size,enum dma_data_direction direction)10015 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10016 size_t size, enum dma_data_direction direction)
10017 {
10018 /* Nothing to do. */
10019 }
10020
niu_phys_map_single(struct device * dev,void * cpu_addr,size_t size,enum dma_data_direction direction)10021 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10022 size_t size,
10023 enum dma_data_direction direction)
10024 {
10025 return __pa(cpu_addr);
10026 }
10027
niu_phys_unmap_single(struct device * dev,u64 dma_address,size_t size,enum dma_data_direction direction)10028 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10029 size_t size,
10030 enum dma_data_direction direction)
10031 {
10032 /* Nothing to do. */
10033 }
10034
niu_phys_mapping_error(struct device * dev,u64 dma_address)10035 static int niu_phys_mapping_error(struct device *dev, u64 dma_address)
10036 {
10037 return false;
10038 }
10039
10040 static const struct niu_ops niu_phys_ops = {
10041 .alloc_coherent = niu_phys_alloc_coherent,
10042 .free_coherent = niu_phys_free_coherent,
10043 .map_page = niu_phys_map_page,
10044 .unmap_page = niu_phys_unmap_page,
10045 .map_single = niu_phys_map_single,
10046 .unmap_single = niu_phys_unmap_single,
10047 .mapping_error = niu_phys_mapping_error,
10048 };
10049
niu_of_probe(struct platform_device * op)10050 static int niu_of_probe(struct platform_device *op)
10051 {
10052 union niu_parent_id parent_id;
10053 struct net_device *dev;
10054 struct niu *np;
10055 const u32 *reg;
10056 int err;
10057
10058 niu_driver_version();
10059
10060 reg = of_get_property(op->dev.of_node, "reg", NULL);
10061 if (!reg) {
10062 dev_err(&op->dev, "%pOF: No 'reg' property, aborting\n",
10063 op->dev.of_node);
10064 return -ENODEV;
10065 }
10066
10067 dev = niu_alloc_and_init(&op->dev, NULL, op,
10068 &niu_phys_ops, reg[0] & 0x1);
10069 if (!dev) {
10070 err = -ENOMEM;
10071 goto err_out;
10072 }
10073 np = netdev_priv(dev);
10074
10075 memset(&parent_id, 0, sizeof(parent_id));
10076 parent_id.of = of_get_parent(op->dev.of_node);
10077
10078 np->parent = niu_get_parent(np, &parent_id,
10079 PLAT_TYPE_NIU);
10080 if (!np->parent) {
10081 err = -ENOMEM;
10082 goto err_out_free_dev;
10083 }
10084
10085 niu_set_basic_features(dev);
10086
10087 np->regs = of_ioremap(&op->resource[1], 0,
10088 resource_size(&op->resource[1]),
10089 "niu regs");
10090 if (!np->regs) {
10091 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10092 err = -ENOMEM;
10093 goto err_out_release_parent;
10094 }
10095
10096 np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10097 resource_size(&op->resource[2]),
10098 "niu vregs-1");
10099 if (!np->vir_regs_1) {
10100 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10101 err = -ENOMEM;
10102 goto err_out_iounmap;
10103 }
10104
10105 np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10106 resource_size(&op->resource[3]),
10107 "niu vregs-2");
10108 if (!np->vir_regs_2) {
10109 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10110 err = -ENOMEM;
10111 goto err_out_iounmap;
10112 }
10113
10114 niu_assign_netdev_ops(dev);
10115
10116 err = niu_get_invariants(np);
10117 if (err) {
10118 if (err != -ENODEV)
10119 dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10120 goto err_out_iounmap;
10121 }
10122
10123 err = register_netdev(dev);
10124 if (err) {
10125 dev_err(&op->dev, "Cannot register net device, aborting\n");
10126 goto err_out_iounmap;
10127 }
10128
10129 platform_set_drvdata(op, dev);
10130
10131 niu_device_announce(np);
10132
10133 return 0;
10134
10135 err_out_iounmap:
10136 if (np->vir_regs_1) {
10137 of_iounmap(&op->resource[2], np->vir_regs_1,
10138 resource_size(&op->resource[2]));
10139 np->vir_regs_1 = NULL;
10140 }
10141
10142 if (np->vir_regs_2) {
10143 of_iounmap(&op->resource[3], np->vir_regs_2,
10144 resource_size(&op->resource[3]));
10145 np->vir_regs_2 = NULL;
10146 }
10147
10148 if (np->regs) {
10149 of_iounmap(&op->resource[1], np->regs,
10150 resource_size(&op->resource[1]));
10151 np->regs = NULL;
10152 }
10153
10154 err_out_release_parent:
10155 niu_put_parent(np);
10156
10157 err_out_free_dev:
10158 free_netdev(dev);
10159
10160 err_out:
10161 return err;
10162 }
10163
niu_of_remove(struct platform_device * op)10164 static int niu_of_remove(struct platform_device *op)
10165 {
10166 struct net_device *dev = platform_get_drvdata(op);
10167
10168 if (dev) {
10169 struct niu *np = netdev_priv(dev);
10170
10171 unregister_netdev(dev);
10172
10173 if (np->vir_regs_1) {
10174 of_iounmap(&op->resource[2], np->vir_regs_1,
10175 resource_size(&op->resource[2]));
10176 np->vir_regs_1 = NULL;
10177 }
10178
10179 if (np->vir_regs_2) {
10180 of_iounmap(&op->resource[3], np->vir_regs_2,
10181 resource_size(&op->resource[3]));
10182 np->vir_regs_2 = NULL;
10183 }
10184
10185 if (np->regs) {
10186 of_iounmap(&op->resource[1], np->regs,
10187 resource_size(&op->resource[1]));
10188 np->regs = NULL;
10189 }
10190
10191 niu_ldg_free(np);
10192
10193 niu_put_parent(np);
10194
10195 free_netdev(dev);
10196 }
10197 return 0;
10198 }
10199
10200 static const struct of_device_id niu_match[] = {
10201 {
10202 .name = "network",
10203 .compatible = "SUNW,niusl",
10204 },
10205 {},
10206 };
10207 MODULE_DEVICE_TABLE(of, niu_match);
10208
10209 static struct platform_driver niu_of_driver = {
10210 .driver = {
10211 .name = "niu",
10212 .of_match_table = niu_match,
10213 },
10214 .probe = niu_of_probe,
10215 .remove = niu_of_remove,
10216 };
10217
10218 #endif /* CONFIG_SPARC64 */
10219
niu_init(void)10220 static int __init niu_init(void)
10221 {
10222 int err = 0;
10223
10224 BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10225
10226 BUILD_BUG_ON(offsetof(struct page, mapping) !=
10227 offsetof(union niu_page, next));
10228
10229 niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10230
10231 #ifdef CONFIG_SPARC64
10232 err = platform_driver_register(&niu_of_driver);
10233 #endif
10234
10235 if (!err) {
10236 err = pci_register_driver(&niu_pci_driver);
10237 #ifdef CONFIG_SPARC64
10238 if (err)
10239 platform_driver_unregister(&niu_of_driver);
10240 #endif
10241 }
10242
10243 return err;
10244 }
10245
niu_exit(void)10246 static void __exit niu_exit(void)
10247 {
10248 pci_unregister_driver(&niu_pci_driver);
10249 #ifdef CONFIG_SPARC64
10250 platform_driver_unregister(&niu_of_driver);
10251 #endif
10252 }
10253
10254 module_init(niu_init);
10255 module_exit(niu_exit);
10256