Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
4b8ac966 JP |
2 | /* |
3 | * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver | |
11ce2ba3 | 4 | * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> |
4b8ac966 | 5 | * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> |
4b8ac966 JP |
6 | */ |
7 | ||
8 | #include <linux/kernel.h> | |
9 | #include <linux/module.h> | |
10 | #include <linux/pci.h> | |
11 | #include <linux/interrupt.h> | |
12 | #include <linux/sched.h> | |
13 | #include <linux/wait.h> | |
14 | #include <linux/spinlock.h> | |
4b8ac966 JP |
15 | #include <linux/sort.h> |
16 | #include <linux/random.h> | |
17 | #include <linux/netdevice.h> | |
4b8ac966 JP |
18 | #include <linux/skbuff.h> |
19 | #include <linux/socket.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/ethtool.h> | |
22 | #include <linux/if_ether.h> | |
23 | #include <linux/if_vlan.h> | |
6c707945 | 24 | #include <linux/if_bridge.h> |
9f6bbf7c | 25 | #include <linux/bitops.h> |
db19170b | 26 | #include <linux/ctype.h> |
c1bb279c | 27 | #include <linux/workqueue.h> |
4b8ac966 JP |
28 | #include <net/switchdev.h> |
29 | #include <net/rtnetlink.h> | |
c1beeef7 SF |
30 | #include <net/netevent.h> |
31 | #include <net/arp.h> | |
5d7bfd14 | 32 | #include <net/fib_rules.h> |
04b1d4e5 | 33 | #include <net/fib_notifier.h> |
2f8e2c87 | 34 | #include <linux/io-64-nonatomic-lo-hi.h> |
4b8ac966 JP |
35 | #include <generated/utsrelease.h> |
36 | ||
0fe685f6 | 37 | #include "rocker_hw.h" |
de152192 JP |
38 | #include "rocker.h" |
39 | #include "rocker_tlv.h" | |
4b8ac966 JP |
40 | |
41 | static const char rocker_driver_name[] = "rocker"; | |
42 | ||
43 | static const struct pci_device_id rocker_pci_id_table[] = { | |
44 | {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, | |
45 | {0, } | |
46 | }; | |
47 | ||
4b8ac966 JP |
48 | struct rocker_wait { |
49 | wait_queue_head_t wait; | |
50 | bool done; | |
179f9a25 | 51 | bool nowait; |
4b8ac966 JP |
52 | }; |
53 | ||
54 | static void rocker_wait_reset(struct rocker_wait *wait) | |
55 | { | |
56 | wait->done = false; | |
179f9a25 | 57 | wait->nowait = false; |
4b8ac966 JP |
58 | } |
59 | ||
60 | static void rocker_wait_init(struct rocker_wait *wait) | |
61 | { | |
62 | init_waitqueue_head(&wait->wait); | |
63 | rocker_wait_reset(wait); | |
64 | } | |
65 | ||
ca0a5f2a | 66 | static struct rocker_wait *rocker_wait_create(void) |
4b8ac966 JP |
67 | { |
68 | struct rocker_wait *wait; | |
69 | ||
ca0a5f2a | 70 | wait = kzalloc(sizeof(*wait), GFP_KERNEL); |
4b8ac966 JP |
71 | if (!wait) |
72 | return NULL; | |
4b8ac966 JP |
73 | return wait; |
74 | } | |
75 | ||
ca0a5f2a | 76 | static void rocker_wait_destroy(struct rocker_wait *wait) |
4b8ac966 | 77 | { |
ca0a5f2a | 78 | kfree(wait); |
4b8ac966 JP |
79 | } |
80 | ||
81 | static bool rocker_wait_event_timeout(struct rocker_wait *wait, | |
82 | unsigned long timeout) | |
83 | { | |
84 | wait_event_timeout(wait->wait, wait->done, HZ / 10); | |
85 | if (!wait->done) | |
86 | return false; | |
87 | return true; | |
88 | } | |
89 | ||
90 | static void rocker_wait_wake_up(struct rocker_wait *wait) | |
91 | { | |
92 | wait->done = true; | |
93 | wake_up(&wait->wait); | |
94 | } | |
95 | ||
e5054643 | 96 | static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector) |
4b8ac966 JP |
97 | { |
98 | return rocker->msix_entries[vector].vector; | |
99 | } | |
100 | ||
e5054643 | 101 | static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port) |
4b8ac966 JP |
102 | { |
103 | return rocker_msix_vector(rocker_port->rocker, | |
104 | ROCKER_MSIX_VEC_TX(rocker_port->port_number)); | |
105 | } | |
106 | ||
e5054643 | 107 | static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port) |
4b8ac966 JP |
108 | { |
109 | return rocker_msix_vector(rocker_port->rocker, | |
110 | ROCKER_MSIX_VEC_RX(rocker_port->port_number)); | |
111 | } | |
112 | ||
113 | #define rocker_write32(rocker, reg, val) \ | |
114 | writel((val), (rocker)->hw_addr + (ROCKER_ ## reg)) | |
115 | #define rocker_read32(rocker, reg) \ | |
116 | readl((rocker)->hw_addr + (ROCKER_ ## reg)) | |
117 | #define rocker_write64(rocker, reg, val) \ | |
118 | writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg)) | |
119 | #define rocker_read64(rocker, reg) \ | |
120 | readq((rocker)->hw_addr + (ROCKER_ ## reg)) | |
121 | ||
122 | /***************************** | |
123 | * HW basic testing functions | |
124 | *****************************/ | |
125 | ||
e5054643 | 126 | static int rocker_reg_test(const struct rocker *rocker) |
4b8ac966 | 127 | { |
e5054643 | 128 | const struct pci_dev *pdev = rocker->pdev; |
4b8ac966 JP |
129 | u64 test_reg; |
130 | u64 rnd; | |
131 | ||
132 | rnd = prandom_u32(); | |
133 | rnd >>= 1; | |
134 | rocker_write32(rocker, TEST_REG, rnd); | |
135 | test_reg = rocker_read32(rocker, TEST_REG); | |
136 | if (test_reg != rnd * 2) { | |
137 | dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n", | |
138 | test_reg, rnd * 2); | |
139 | return -EIO; | |
140 | } | |
141 | ||
142 | rnd = prandom_u32(); | |
143 | rnd <<= 31; | |
144 | rnd |= prandom_u32(); | |
145 | rocker_write64(rocker, TEST_REG64, rnd); | |
146 | test_reg = rocker_read64(rocker, TEST_REG64); | |
147 | if (test_reg != rnd * 2) { | |
148 | dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n", | |
149 | test_reg, rnd * 2); | |
150 | return -EIO; | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
e5054643 SH |
156 | static int rocker_dma_test_one(const struct rocker *rocker, |
157 | struct rocker_wait *wait, u32 test_type, | |
158 | dma_addr_t dma_handle, const unsigned char *buf, | |
159 | const unsigned char *expect, size_t size) | |
4b8ac966 | 160 | { |
e5054643 | 161 | const struct pci_dev *pdev = rocker->pdev; |
4b8ac966 JP |
162 | int i; |
163 | ||
164 | rocker_wait_reset(wait); | |
165 | rocker_write32(rocker, TEST_DMA_CTRL, test_type); | |
166 | ||
167 | if (!rocker_wait_event_timeout(wait, HZ / 10)) { | |
168 | dev_err(&pdev->dev, "no interrupt received within a timeout\n"); | |
169 | return -EIO; | |
170 | } | |
171 | ||
172 | for (i = 0; i < size; i++) { | |
173 | if (buf[i] != expect[i]) { | |
174 | dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected", | |
175 | buf[i], i, expect[i]); | |
176 | return -EIO; | |
177 | } | |
178 | } | |
179 | return 0; | |
180 | } | |
181 | ||
182 | #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4) | |
183 | #define ROCKER_TEST_DMA_FILL_PATTERN 0x96 | |
184 | ||
e5054643 | 185 | static int rocker_dma_test_offset(const struct rocker *rocker, |
4b8ac966 JP |
186 | struct rocker_wait *wait, int offset) |
187 | { | |
188 | struct pci_dev *pdev = rocker->pdev; | |
189 | unsigned char *alloc; | |
190 | unsigned char *buf; | |
191 | unsigned char *expect; | |
192 | dma_addr_t dma_handle; | |
193 | int i; | |
194 | int err; | |
195 | ||
196 | alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset, | |
197 | GFP_KERNEL | GFP_DMA); | |
198 | if (!alloc) | |
199 | return -ENOMEM; | |
200 | buf = alloc + offset; | |
201 | expect = buf + ROCKER_TEST_DMA_BUF_SIZE; | |
202 | ||
203 | dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE, | |
204 | PCI_DMA_BIDIRECTIONAL); | |
205 | if (pci_dma_mapping_error(pdev, dma_handle)) { | |
206 | err = -EIO; | |
207 | goto free_alloc; | |
208 | } | |
209 | ||
210 | rocker_write64(rocker, TEST_DMA_ADDR, dma_handle); | |
211 | rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE); | |
212 | ||
213 | memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE); | |
214 | err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL, | |
215 | dma_handle, buf, expect, | |
216 | ROCKER_TEST_DMA_BUF_SIZE); | |
217 | if (err) | |
218 | goto unmap; | |
219 | ||
220 | memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE); | |
221 | err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR, | |
222 | dma_handle, buf, expect, | |
223 | ROCKER_TEST_DMA_BUF_SIZE); | |
224 | if (err) | |
225 | goto unmap; | |
226 | ||
227 | prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); | |
228 | for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) | |
229 | expect[i] = ~buf[i]; | |
230 | err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, | |
231 | dma_handle, buf, expect, | |
232 | ROCKER_TEST_DMA_BUF_SIZE); | |
233 | if (err) | |
234 | goto unmap; | |
235 | ||
236 | unmap: | |
237 | pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE, | |
238 | PCI_DMA_BIDIRECTIONAL); | |
239 | free_alloc: | |
240 | kfree(alloc); | |
241 | ||
242 | return err; | |
243 | } | |
244 | ||
e5054643 SH |
245 | static int rocker_dma_test(const struct rocker *rocker, |
246 | struct rocker_wait *wait) | |
4b8ac966 JP |
247 | { |
248 | int i; | |
249 | int err; | |
250 | ||
251 | for (i = 0; i < 8; i++) { | |
252 | err = rocker_dma_test_offset(rocker, wait, i); | |
253 | if (err) | |
254 | return err; | |
255 | } | |
256 | return 0; | |
257 | } | |
258 | ||
259 | static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id) | |
260 | { | |
261 | struct rocker_wait *wait = dev_id; | |
262 | ||
263 | rocker_wait_wake_up(wait); | |
264 | ||
265 | return IRQ_HANDLED; | |
266 | } | |
267 | ||
e5054643 | 268 | static int rocker_basic_hw_test(const struct rocker *rocker) |
4b8ac966 | 269 | { |
e5054643 | 270 | const struct pci_dev *pdev = rocker->pdev; |
4b8ac966 JP |
271 | struct rocker_wait wait; |
272 | int err; | |
273 | ||
274 | err = rocker_reg_test(rocker); | |
275 | if (err) { | |
276 | dev_err(&pdev->dev, "reg test failed\n"); | |
277 | return err; | |
278 | } | |
279 | ||
280 | err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), | |
281 | rocker_test_irq_handler, 0, | |
282 | rocker_driver_name, &wait); | |
283 | if (err) { | |
284 | dev_err(&pdev->dev, "cannot assign test irq\n"); | |
285 | return err; | |
286 | } | |
287 | ||
288 | rocker_wait_init(&wait); | |
289 | rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST); | |
290 | ||
291 | if (!rocker_wait_event_timeout(&wait, HZ / 10)) { | |
292 | dev_err(&pdev->dev, "no interrupt received within a timeout\n"); | |
293 | err = -EIO; | |
294 | goto free_irq; | |
295 | } | |
296 | ||
297 | err = rocker_dma_test(rocker, &wait); | |
298 | if (err) | |
299 | dev_err(&pdev->dev, "dma test failed\n"); | |
300 | ||
301 | free_irq: | |
302 | free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait); | |
303 | return err; | |
304 | } | |
305 | ||
4b8ac966 JP |
306 | /****************************************** |
307 | * DMA rings and descriptors manipulations | |
308 | ******************************************/ | |
309 | ||
310 | static u32 __pos_inc(u32 pos, size_t limit) | |
311 | { | |
312 | return ++pos == limit ? 0 : pos; | |
313 | } | |
314 | ||
e5054643 | 315 | static int rocker_desc_err(const struct rocker_desc_info *desc_info) |
4b8ac966 | 316 | { |
7eb344f8 SF |
317 | int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; |
318 | ||
319 | switch (err) { | |
320 | case ROCKER_OK: | |
321 | return 0; | |
322 | case -ROCKER_ENOENT: | |
323 | return -ENOENT; | |
324 | case -ROCKER_ENXIO: | |
325 | return -ENXIO; | |
326 | case -ROCKER_ENOMEM: | |
327 | return -ENOMEM; | |
328 | case -ROCKER_EEXIST: | |
329 | return -EEXIST; | |
330 | case -ROCKER_EINVAL: | |
331 | return -EINVAL; | |
332 | case -ROCKER_EMSGSIZE: | |
333 | return -EMSGSIZE; | |
334 | case -ROCKER_ENOTSUP: | |
335 | return -EOPNOTSUPP; | |
336 | case -ROCKER_ENOBUFS: | |
337 | return -ENOBUFS; | |
338 | } | |
339 | ||
340 | return -EINVAL; | |
4b8ac966 JP |
341 | } |
342 | ||
e5054643 | 343 | static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info) |
4b8ac966 JP |
344 | { |
345 | desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; | |
346 | } | |
347 | ||
e5054643 | 348 | static bool rocker_desc_gen(const struct rocker_desc_info *desc_info) |
4b8ac966 JP |
349 | { |
350 | u32 comp_err = desc_info->desc->comp_err; | |
351 | ||
352 | return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false; | |
353 | } | |
354 | ||
11ce2ba3 JP |
355 | static void * |
356 | rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info) | |
4b8ac966 | 357 | { |
adedf37b | 358 | return (void *)(uintptr_t)desc_info->desc->cookie; |
4b8ac966 JP |
359 | } |
360 | ||
e5054643 | 361 | static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info, |
4b8ac966 JP |
362 | void *ptr) |
363 | { | |
adedf37b | 364 | desc_info->desc->cookie = (uintptr_t) ptr; |
4b8ac966 JP |
365 | } |
366 | ||
367 | static struct rocker_desc_info * | |
e5054643 | 368 | rocker_desc_head_get(const struct rocker_dma_ring_info *info) |
4b8ac966 | 369 | { |
9333f207 | 370 | struct rocker_desc_info *desc_info; |
4b8ac966 JP |
371 | u32 head = __pos_inc(info->head, info->size); |
372 | ||
373 | desc_info = &info->desc_info[info->head]; | |
374 | if (head == info->tail) | |
375 | return NULL; /* ring full */ | |
376 | desc_info->tlv_size = 0; | |
377 | return desc_info; | |
378 | } | |
379 | ||
e5054643 | 380 | static void rocker_desc_commit(const struct rocker_desc_info *desc_info) |
4b8ac966 JP |
381 | { |
382 | desc_info->desc->buf_size = desc_info->data_size; | |
383 | desc_info->desc->tlv_size = desc_info->tlv_size; | |
384 | } | |
385 | ||
e5054643 | 386 | static void rocker_desc_head_set(const struct rocker *rocker, |
4b8ac966 | 387 | struct rocker_dma_ring_info *info, |
e5054643 | 388 | const struct rocker_desc_info *desc_info) |
4b8ac966 JP |
389 | { |
390 | u32 head = __pos_inc(info->head, info->size); | |
391 | ||
392 | BUG_ON(head == info->tail); | |
393 | rocker_desc_commit(desc_info); | |
394 | info->head = head; | |
395 | rocker_write32(rocker, DMA_DESC_HEAD(info->type), head); | |
396 | } | |
397 | ||
398 | static struct rocker_desc_info * | |
399 | rocker_desc_tail_get(struct rocker_dma_ring_info *info) | |
400 | { | |
9333f207 | 401 | struct rocker_desc_info *desc_info; |
4b8ac966 JP |
402 | |
403 | if (info->tail == info->head) | |
404 | return NULL; /* nothing to be done between head and tail */ | |
405 | desc_info = &info->desc_info[info->tail]; | |
406 | if (!rocker_desc_gen(desc_info)) | |
407 | return NULL; /* gen bit not set, desc is not ready yet */ | |
408 | info->tail = __pos_inc(info->tail, info->size); | |
409 | desc_info->tlv_size = desc_info->desc->tlv_size; | |
410 | return desc_info; | |
411 | } | |
412 | ||
e5054643 SH |
413 | static void rocker_dma_ring_credits_set(const struct rocker *rocker, |
414 | const struct rocker_dma_ring_info *info, | |
4b8ac966 JP |
415 | u32 credits) |
416 | { | |
417 | if (credits) | |
418 | rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits); | |
419 | } | |
420 | ||
421 | static unsigned long rocker_dma_ring_size_fix(size_t size) | |
422 | { | |
423 | return max(ROCKER_DMA_SIZE_MIN, | |
424 | min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX)); | |
425 | } | |
426 | ||
e5054643 | 427 | static int rocker_dma_ring_create(const struct rocker *rocker, |
4b8ac966 JP |
428 | unsigned int type, |
429 | size_t size, | |
430 | struct rocker_dma_ring_info *info) | |
431 | { | |
432 | int i; | |
433 | ||
434 | BUG_ON(size != rocker_dma_ring_size_fix(size)); | |
435 | info->size = size; | |
436 | info->type = type; | |
437 | info->head = 0; | |
438 | info->tail = 0; | |
439 | info->desc_info = kcalloc(info->size, sizeof(*info->desc_info), | |
440 | GFP_KERNEL); | |
441 | if (!info->desc_info) | |
442 | return -ENOMEM; | |
443 | ||
444 | info->desc = pci_alloc_consistent(rocker->pdev, | |
445 | info->size * sizeof(*info->desc), | |
446 | &info->mapaddr); | |
447 | if (!info->desc) { | |
448 | kfree(info->desc_info); | |
449 | return -ENOMEM; | |
450 | } | |
451 | ||
452 | for (i = 0; i < info->size; i++) | |
453 | info->desc_info[i].desc = &info->desc[i]; | |
454 | ||
455 | rocker_write32(rocker, DMA_DESC_CTRL(info->type), | |
456 | ROCKER_DMA_DESC_CTRL_RESET); | |
457 | rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr); | |
458 | rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size); | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
e5054643 SH |
463 | static void rocker_dma_ring_destroy(const struct rocker *rocker, |
464 | const struct rocker_dma_ring_info *info) | |
4b8ac966 JP |
465 | { |
466 | rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0); | |
467 | ||
468 | pci_free_consistent(rocker->pdev, | |
469 | info->size * sizeof(struct rocker_desc), | |
470 | info->desc, info->mapaddr); | |
471 | kfree(info->desc_info); | |
472 | } | |
473 | ||
e5054643 | 474 | static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker, |
4b8ac966 JP |
475 | struct rocker_dma_ring_info *info) |
476 | { | |
477 | int i; | |
478 | ||
479 | BUG_ON(info->head || info->tail); | |
480 | ||
481 | /* When ring is consumer, we need to advance head for each desc. | |
482 | * That tells hw that the desc is ready to be used by it. | |
483 | */ | |
484 | for (i = 0; i < info->size - 1; i++) | |
485 | rocker_desc_head_set(rocker, info, &info->desc_info[i]); | |
486 | rocker_desc_commit(&info->desc_info[i]); | |
487 | } | |
488 | ||
e5054643 SH |
489 | static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker, |
490 | const struct rocker_dma_ring_info *info, | |
4b8ac966 JP |
491 | int direction, size_t buf_size) |
492 | { | |
493 | struct pci_dev *pdev = rocker->pdev; | |
494 | int i; | |
495 | int err; | |
496 | ||
497 | for (i = 0; i < info->size; i++) { | |
498 | struct rocker_desc_info *desc_info = &info->desc_info[i]; | |
499 | struct rocker_desc *desc = &info->desc[i]; | |
500 | dma_addr_t dma_handle; | |
501 | char *buf; | |
502 | ||
503 | buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA); | |
504 | if (!buf) { | |
505 | err = -ENOMEM; | |
506 | goto rollback; | |
507 | } | |
508 | ||
509 | dma_handle = pci_map_single(pdev, buf, buf_size, direction); | |
510 | if (pci_dma_mapping_error(pdev, dma_handle)) { | |
511 | kfree(buf); | |
512 | err = -EIO; | |
513 | goto rollback; | |
514 | } | |
515 | ||
516 | desc_info->data = buf; | |
517 | desc_info->data_size = buf_size; | |
518 | dma_unmap_addr_set(desc_info, mapaddr, dma_handle); | |
519 | ||
520 | desc->buf_addr = dma_handle; | |
521 | desc->buf_size = buf_size; | |
522 | } | |
523 | return 0; | |
524 | ||
525 | rollback: | |
526 | for (i--; i >= 0; i--) { | |
e5054643 | 527 | const struct rocker_desc_info *desc_info = &info->desc_info[i]; |
4b8ac966 JP |
528 | |
529 | pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), | |
530 | desc_info->data_size, direction); | |
531 | kfree(desc_info->data); | |
532 | } | |
533 | return err; | |
534 | } | |
535 | ||
e5054643 SH |
536 | static void rocker_dma_ring_bufs_free(const struct rocker *rocker, |
537 | const struct rocker_dma_ring_info *info, | |
4b8ac966 JP |
538 | int direction) |
539 | { | |
540 | struct pci_dev *pdev = rocker->pdev; | |
541 | int i; | |
542 | ||
543 | for (i = 0; i < info->size; i++) { | |
e5054643 | 544 | const struct rocker_desc_info *desc_info = &info->desc_info[i]; |
4b8ac966 JP |
545 | struct rocker_desc *desc = &info->desc[i]; |
546 | ||
547 | desc->buf_addr = 0; | |
548 | desc->buf_size = 0; | |
549 | pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), | |
550 | desc_info->data_size, direction); | |
551 | kfree(desc_info->data); | |
552 | } | |
553 | } | |
554 | ||
ca0a5f2a JP |
555 | static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info) |
556 | { | |
557 | struct rocker_wait *wait; | |
558 | ||
559 | wait = rocker_wait_create(); | |
560 | if (!wait) | |
561 | return -ENOMEM; | |
562 | rocker_desc_cookie_ptr_set(desc_info, wait); | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static void | |
567 | rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info) | |
568 | { | |
569 | struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info); | |
570 | ||
571 | rocker_wait_destroy(wait); | |
572 | } | |
573 | ||
574 | static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker) | |
575 | { | |
576 | const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; | |
577 | int i; | |
578 | int err; | |
579 | ||
580 | for (i = 0; i < cmd_ring->size; i++) { | |
581 | err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]); | |
582 | if (err) | |
583 | goto rollback; | |
584 | } | |
585 | return 0; | |
586 | ||
587 | rollback: | |
588 | for (i--; i >= 0; i--) | |
589 | rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); | |
590 | return err; | |
591 | } | |
592 | ||
593 | static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker) | |
594 | { | |
595 | const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; | |
596 | int i; | |
597 | ||
598 | for (i = 0; i < cmd_ring->size; i++) | |
599 | rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); | |
600 | } | |
601 | ||
4b8ac966 JP |
602 | static int rocker_dma_rings_init(struct rocker *rocker) |
603 | { | |
e5054643 | 604 | const struct pci_dev *pdev = rocker->pdev; |
4b8ac966 JP |
605 | int err; |
606 | ||
607 | err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD, | |
608 | ROCKER_DMA_CMD_DEFAULT_SIZE, | |
609 | &rocker->cmd_ring); | |
610 | if (err) { | |
611 | dev_err(&pdev->dev, "failed to create command dma ring\n"); | |
612 | return err; | |
613 | } | |
614 | ||
615 | spin_lock_init(&rocker->cmd_ring_lock); | |
616 | ||
617 | err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring, | |
618 | PCI_DMA_BIDIRECTIONAL, PAGE_SIZE); | |
619 | if (err) { | |
620 | dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n"); | |
621 | goto err_dma_cmd_ring_bufs_alloc; | |
622 | } | |
623 | ||
ca0a5f2a JP |
624 | err = rocker_dma_cmd_ring_waits_alloc(rocker); |
625 | if (err) { | |
626 | dev_err(&pdev->dev, "failed to alloc command dma ring waits\n"); | |
627 | goto err_dma_cmd_ring_waits_alloc; | |
628 | } | |
629 | ||
4b8ac966 JP |
630 | err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT, |
631 | ROCKER_DMA_EVENT_DEFAULT_SIZE, | |
632 | &rocker->event_ring); | |
633 | if (err) { | |
634 | dev_err(&pdev->dev, "failed to create event dma ring\n"); | |
635 | goto err_dma_event_ring_create; | |
636 | } | |
637 | ||
638 | err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring, | |
639 | PCI_DMA_FROMDEVICE, PAGE_SIZE); | |
640 | if (err) { | |
641 | dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n"); | |
642 | goto err_dma_event_ring_bufs_alloc; | |
643 | } | |
644 | rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring); | |
645 | return 0; | |
646 | ||
647 | err_dma_event_ring_bufs_alloc: | |
648 | rocker_dma_ring_destroy(rocker, &rocker->event_ring); | |
649 | err_dma_event_ring_create: | |
58d0c864 AP |
650 | rocker_dma_cmd_ring_waits_free(rocker); |
651 | err_dma_cmd_ring_waits_alloc: | |
4b8ac966 JP |
652 | rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, |
653 | PCI_DMA_BIDIRECTIONAL); | |
654 | err_dma_cmd_ring_bufs_alloc: | |
655 | rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); | |
656 | return err; | |
657 | } | |
658 | ||
659 | static void rocker_dma_rings_fini(struct rocker *rocker) | |
660 | { | |
661 | rocker_dma_ring_bufs_free(rocker, &rocker->event_ring, | |
662 | PCI_DMA_BIDIRECTIONAL); | |
663 | rocker_dma_ring_destroy(rocker, &rocker->event_ring); | |
ca0a5f2a | 664 | rocker_dma_cmd_ring_waits_free(rocker); |
4b8ac966 JP |
665 | rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, |
666 | PCI_DMA_BIDIRECTIONAL); | |
667 | rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); | |
668 | } | |
669 | ||
534ba6a8 | 670 | static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port, |
4b8ac966 JP |
671 | struct rocker_desc_info *desc_info, |
672 | struct sk_buff *skb, size_t buf_len) | |
673 | { | |
534ba6a8 | 674 | const struct rocker *rocker = rocker_port->rocker; |
4b8ac966 JP |
675 | struct pci_dev *pdev = rocker->pdev; |
676 | dma_addr_t dma_handle; | |
677 | ||
678 | dma_handle = pci_map_single(pdev, skb->data, buf_len, | |
679 | PCI_DMA_FROMDEVICE); | |
680 | if (pci_dma_mapping_error(pdev, dma_handle)) | |
681 | return -EIO; | |
682 | if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle)) | |
683 | goto tlv_put_failure; | |
684 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len)) | |
685 | goto tlv_put_failure; | |
686 | return 0; | |
687 | ||
688 | tlv_put_failure: | |
689 | pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE); | |
690 | desc_info->tlv_size = 0; | |
691 | return -EMSGSIZE; | |
692 | } | |
693 | ||
e5054643 | 694 | static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port) |
4b8ac966 JP |
695 | { |
696 | return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
697 | } | |
698 | ||
534ba6a8 | 699 | static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port, |
4b8ac966 JP |
700 | struct rocker_desc_info *desc_info) |
701 | { | |
702 | struct net_device *dev = rocker_port->dev; | |
703 | struct sk_buff *skb; | |
704 | size_t buf_len = rocker_port_rx_buf_len(rocker_port); | |
705 | int err; | |
706 | ||
707 | /* Ensure that hw will see tlv_size zero in case of an error. | |
708 | * That tells hw to use another descriptor. | |
709 | */ | |
710 | rocker_desc_cookie_ptr_set(desc_info, NULL); | |
711 | desc_info->tlv_size = 0; | |
712 | ||
713 | skb = netdev_alloc_skb_ip_align(dev, buf_len); | |
714 | if (!skb) | |
715 | return -ENOMEM; | |
534ba6a8 | 716 | err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len); |
4b8ac966 JP |
717 | if (err) { |
718 | dev_kfree_skb_any(skb); | |
719 | return err; | |
720 | } | |
721 | rocker_desc_cookie_ptr_set(desc_info, skb); | |
722 | return 0; | |
723 | } | |
724 | ||
e5054643 SH |
725 | static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker, |
726 | const struct rocker_tlv **attrs) | |
4b8ac966 JP |
727 | { |
728 | struct pci_dev *pdev = rocker->pdev; | |
729 | dma_addr_t dma_handle; | |
730 | size_t len; | |
731 | ||
732 | if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] || | |
733 | !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]) | |
734 | return; | |
735 | dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]); | |
736 | len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]); | |
737 | pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE); | |
738 | } | |
739 | ||
e5054643 SH |
740 | static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker, |
741 | const struct rocker_desc_info *desc_info) | |
4b8ac966 | 742 | { |
e5054643 | 743 | const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; |
4b8ac966 JP |
744 | struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); |
745 | ||
746 | if (!skb) | |
747 | return; | |
748 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); | |
749 | rocker_dma_rx_ring_skb_unmap(rocker, attrs); | |
750 | dev_kfree_skb_any(skb); | |
751 | } | |
752 | ||
534ba6a8 | 753 | static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port) |
4b8ac966 | 754 | { |
e5054643 | 755 | const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; |
534ba6a8 | 756 | const struct rocker *rocker = rocker_port->rocker; |
4b8ac966 JP |
757 | int i; |
758 | int err; | |
759 | ||
760 | for (i = 0; i < rx_ring->size; i++) { | |
534ba6a8 | 761 | err = rocker_dma_rx_ring_skb_alloc(rocker_port, |
4b8ac966 JP |
762 | &rx_ring->desc_info[i]); |
763 | if (err) | |
764 | goto rollback; | |
765 | } | |
766 | return 0; | |
767 | ||
768 | rollback: | |
769 | for (i--; i >= 0; i--) | |
770 | rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); | |
771 | return err; | |
772 | } | |
773 | ||
534ba6a8 | 774 | static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port) |
4b8ac966 | 775 | { |
e5054643 | 776 | const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; |
534ba6a8 | 777 | const struct rocker *rocker = rocker_port->rocker; |
4b8ac966 JP |
778 | int i; |
779 | ||
780 | for (i = 0; i < rx_ring->size; i++) | |
781 | rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); | |
782 | } | |
783 | ||
784 | static int rocker_port_dma_rings_init(struct rocker_port *rocker_port) | |
785 | { | |
786 | struct rocker *rocker = rocker_port->rocker; | |
787 | int err; | |
788 | ||
789 | err = rocker_dma_ring_create(rocker, | |
790 | ROCKER_DMA_TX(rocker_port->port_number), | |
791 | ROCKER_DMA_TX_DEFAULT_SIZE, | |
792 | &rocker_port->tx_ring); | |
793 | if (err) { | |
794 | netdev_err(rocker_port->dev, "failed to create tx dma ring\n"); | |
795 | return err; | |
796 | } | |
797 | ||
798 | err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring, | |
799 | PCI_DMA_TODEVICE, | |
800 | ROCKER_DMA_TX_DESC_SIZE); | |
801 | if (err) { | |
802 | netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n"); | |
803 | goto err_dma_tx_ring_bufs_alloc; | |
804 | } | |
805 | ||
806 | err = rocker_dma_ring_create(rocker, | |
807 | ROCKER_DMA_RX(rocker_port->port_number), | |
808 | ROCKER_DMA_RX_DEFAULT_SIZE, | |
809 | &rocker_port->rx_ring); | |
810 | if (err) { | |
811 | netdev_err(rocker_port->dev, "failed to create rx dma ring\n"); | |
812 | goto err_dma_rx_ring_create; | |
813 | } | |
814 | ||
815 | err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring, | |
816 | PCI_DMA_BIDIRECTIONAL, | |
817 | ROCKER_DMA_RX_DESC_SIZE); | |
818 | if (err) { | |
819 | netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n"); | |
820 | goto err_dma_rx_ring_bufs_alloc; | |
821 | } | |
822 | ||
534ba6a8 | 823 | err = rocker_dma_rx_ring_skbs_alloc(rocker_port); |
4b8ac966 JP |
824 | if (err) { |
825 | netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n"); | |
826 | goto err_dma_rx_ring_skbs_alloc; | |
827 | } | |
828 | rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring); | |
829 | ||
830 | return 0; | |
831 | ||
832 | err_dma_rx_ring_skbs_alloc: | |
833 | rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, | |
834 | PCI_DMA_BIDIRECTIONAL); | |
835 | err_dma_rx_ring_bufs_alloc: | |
836 | rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); | |
837 | err_dma_rx_ring_create: | |
838 | rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, | |
839 | PCI_DMA_TODEVICE); | |
840 | err_dma_tx_ring_bufs_alloc: | |
841 | rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); | |
842 | return err; | |
843 | } | |
844 | ||
845 | static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port) | |
846 | { | |
847 | struct rocker *rocker = rocker_port->rocker; | |
848 | ||
534ba6a8 | 849 | rocker_dma_rx_ring_skbs_free(rocker_port); |
4b8ac966 JP |
850 | rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, |
851 | PCI_DMA_BIDIRECTIONAL); | |
852 | rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); | |
853 | rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, | |
854 | PCI_DMA_TODEVICE); | |
855 | rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); | |
856 | } | |
857 | ||
e5054643 SH |
858 | static void rocker_port_set_enable(const struct rocker_port *rocker_port, |
859 | bool enable) | |
4b8ac966 JP |
860 | { |
861 | u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); | |
862 | ||
863 | if (enable) | |
71a83a6d | 864 | val |= 1ULL << rocker_port->pport; |
4b8ac966 | 865 | else |
71a83a6d | 866 | val &= ~(1ULL << rocker_port->pport); |
4b8ac966 JP |
867 | rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); |
868 | } | |
869 | ||
870 | /******************************** | |
871 | * Interrupt handler and helpers | |
872 | ********************************/ | |
873 | ||
874 | static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id) | |
875 | { | |
876 | struct rocker *rocker = dev_id; | |
e5054643 | 877 | const struct rocker_desc_info *desc_info; |
4b8ac966 JP |
878 | struct rocker_wait *wait; |
879 | u32 credits = 0; | |
880 | ||
881 | spin_lock(&rocker->cmd_ring_lock); | |
882 | while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) { | |
883 | wait = rocker_desc_cookie_ptr_get(desc_info); | |
179f9a25 SF |
884 | if (wait->nowait) { |
885 | rocker_desc_gen_clear(desc_info); | |
179f9a25 SF |
886 | } else { |
887 | rocker_wait_wake_up(wait); | |
888 | } | |
4b8ac966 JP |
889 | credits++; |
890 | } | |
891 | spin_unlock(&rocker->cmd_ring_lock); | |
892 | rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits); | |
893 | ||
894 | return IRQ_HANDLED; | |
895 | } | |
896 | ||
e5054643 | 897 | static void rocker_port_link_up(const struct rocker_port *rocker_port) |
4b8ac966 JP |
898 | { |
899 | netif_carrier_on(rocker_port->dev); | |
900 | netdev_info(rocker_port->dev, "Link is up\n"); | |
901 | } | |
902 | ||
e5054643 | 903 | static void rocker_port_link_down(const struct rocker_port *rocker_port) |
4b8ac966 JP |
904 | { |
905 | netif_carrier_off(rocker_port->dev); | |
906 | netdev_info(rocker_port->dev, "Link is down\n"); | |
907 | } | |
908 | ||
e5054643 | 909 | static int rocker_event_link_change(const struct rocker *rocker, |
4b8ac966 JP |
910 | const struct rocker_tlv *info) |
911 | { | |
e5054643 | 912 | const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; |
4b8ac966 JP |
913 | unsigned int port_number; |
914 | bool link_up; | |
915 | struct rocker_port *rocker_port; | |
916 | ||
917 | rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info); | |
4a6bb6d3 | 918 | if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] || |
4b8ac966 JP |
919 | !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) |
920 | return -EIO; | |
921 | port_number = | |
4a6bb6d3 | 922 | rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1; |
4b8ac966 JP |
923 | link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); |
924 | ||
925 | if (port_number >= rocker->port_count) | |
926 | return -EINVAL; | |
927 | ||
928 | rocker_port = rocker->ports[port_number]; | |
929 | if (netif_carrier_ok(rocker_port->dev) != link_up) { | |
930 | if (link_up) | |
931 | rocker_port_link_up(rocker_port); | |
932 | else | |
933 | rocker_port_link_down(rocker_port); | |
934 | } | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
e420114e JP |
939 | static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, |
940 | const unsigned char *addr, | |
941 | __be16 vlan_id); | |
6c707945 | 942 | |
e5054643 | 943 | static int rocker_event_mac_vlan_seen(const struct rocker *rocker, |
6c707945 SF |
944 | const struct rocker_tlv *info) |
945 | { | |
e5054643 | 946 | const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; |
6c707945 SF |
947 | unsigned int port_number; |
948 | struct rocker_port *rocker_port; | |
e5054643 | 949 | const unsigned char *addr; |
6c707945 SF |
950 | __be16 vlan_id; |
951 | ||
952 | rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info); | |
4a6bb6d3 | 953 | if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] || |
6c707945 SF |
954 | !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] || |
955 | !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]) | |
956 | return -EIO; | |
957 | port_number = | |
4a6bb6d3 | 958 | rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1; |
6c707945 | 959 | addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]); |
9b03c71f | 960 | vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]); |
6c707945 SF |
961 | |
962 | if (port_number >= rocker->port_count) | |
963 | return -EINVAL; | |
964 | ||
965 | rocker_port = rocker->ports[port_number]; | |
3fbcdbf3 | 966 | return rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); |
6c707945 | 967 | } |
9f6bbf7c | 968 | |
e5054643 SH |
969 | static int rocker_event_process(const struct rocker *rocker, |
970 | const struct rocker_desc_info *desc_info) | |
4b8ac966 | 971 | { |
e5054643 SH |
972 | const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; |
973 | const struct rocker_tlv *info; | |
4b8ac966 JP |
974 | u16 type; |
975 | ||
976 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info); | |
977 | if (!attrs[ROCKER_TLV_EVENT_TYPE] || | |
978 | !attrs[ROCKER_TLV_EVENT_INFO]) | |
979 | return -EIO; | |
980 | ||
981 | type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]); | |
982 | info = attrs[ROCKER_TLV_EVENT_INFO]; | |
983 | ||
984 | switch (type) { | |
985 | case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED: | |
986 | return rocker_event_link_change(rocker, info); | |
6c707945 SF |
987 | case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN: |
988 | return rocker_event_mac_vlan_seen(rocker, info); | |
4b8ac966 JP |
989 | } |
990 | ||
991 | return -EOPNOTSUPP; | |
992 | } | |
993 | ||
994 | static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id) | |
995 | { | |
996 | struct rocker *rocker = dev_id; | |
e5054643 SH |
997 | const struct pci_dev *pdev = rocker->pdev; |
998 | const struct rocker_desc_info *desc_info; | |
4b8ac966 JP |
999 | u32 credits = 0; |
1000 | int err; | |
1001 | ||
1002 | while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) { | |
1003 | err = rocker_desc_err(desc_info); | |
1004 | if (err) { | |
1005 | dev_err(&pdev->dev, "event desc received with err %d\n", | |
1006 | err); | |
1007 | } else { | |
1008 | err = rocker_event_process(rocker, desc_info); | |
1009 | if (err) | |
1010 | dev_err(&pdev->dev, "event processing failed with err %d\n", | |
1011 | err); | |
1012 | } | |
1013 | rocker_desc_gen_clear(desc_info); | |
1014 | rocker_desc_head_set(rocker, &rocker->event_ring, desc_info); | |
1015 | credits++; | |
1016 | } | |
1017 | rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits); | |
1018 | ||
1019 | return IRQ_HANDLED; | |
1020 | } | |
1021 | ||
1022 | static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id) | |
1023 | { | |
1024 | struct rocker_port *rocker_port = dev_id; | |
1025 | ||
1026 | napi_schedule(&rocker_port->napi_tx); | |
1027 | return IRQ_HANDLED; | |
1028 | } | |
1029 | ||
1030 | static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id) | |
1031 | { | |
1032 | struct rocker_port *rocker_port = dev_id; | |
1033 | ||
1034 | napi_schedule(&rocker_port->napi_rx); | |
1035 | return IRQ_HANDLED; | |
1036 | } | |
1037 | ||
1038 | /******************** | |
1039 | * Command interface | |
1040 | ********************/ | |
1041 | ||
3fbcdbf3 JP |
1042 | int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait, |
1043 | rocker_cmd_prep_cb_t prepare, void *prepare_priv, | |
1044 | rocker_cmd_proc_cb_t process, void *process_priv) | |
4b8ac966 | 1045 | { |
534ba6a8 | 1046 | struct rocker *rocker = rocker_port->rocker; |
4b8ac966 JP |
1047 | struct rocker_desc_info *desc_info; |
1048 | struct rocker_wait *wait; | |
179f9a25 | 1049 | unsigned long lock_flags; |
4b8ac966 JP |
1050 | int err; |
1051 | ||
179f9a25 | 1052 | spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags); |
c4f20321 | 1053 | |
4b8ac966 JP |
1054 | desc_info = rocker_desc_head_get(&rocker->cmd_ring); |
1055 | if (!desc_info) { | |
179f9a25 | 1056 | spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); |
ca0a5f2a | 1057 | return -EAGAIN; |
4b8ac966 | 1058 | } |
c4f20321 | 1059 | |
ca0a5f2a JP |
1060 | wait = rocker_desc_cookie_ptr_get(desc_info); |
1061 | rocker_wait_init(wait); | |
1062 | wait->nowait = nowait; | |
1063 | ||
534ba6a8 | 1064 | err = prepare(rocker_port, desc_info, prepare_priv); |
4b8ac966 | 1065 | if (err) { |
179f9a25 | 1066 | spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); |
ca0a5f2a | 1067 | return err; |
4b8ac966 | 1068 | } |
c4f20321 | 1069 | |
ae3907ec | 1070 | rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); |
4b8ac966 | 1071 | |
179f9a25 SF |
1072 | spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); |
1073 | ||
1074 | if (nowait) | |
1075 | return 0; | |
c4f20321 | 1076 | |
ae3907ec JP |
1077 | if (!rocker_wait_event_timeout(wait, HZ / 10)) |
1078 | return -EIO; | |
4b8ac966 JP |
1079 | |
1080 | err = rocker_desc_err(desc_info); | |
1081 | if (err) | |
1082 | return err; | |
1083 | ||
1084 | if (process) | |
534ba6a8 | 1085 | err = process(rocker_port, desc_info, process_priv); |
4b8ac966 JP |
1086 | |
1087 | rocker_desc_gen_clear(desc_info); | |
4b8ac966 JP |
1088 | return err; |
1089 | } | |
1090 | ||
1091 | static int | |
534ba6a8 | 1092 | rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port, |
4b8ac966 JP |
1093 | struct rocker_desc_info *desc_info, |
1094 | void *priv) | |
1095 | { | |
1096 | struct rocker_tlv *cmd_info; | |
1097 | ||
1098 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, | |
1099 | ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS)) | |
1100 | return -EMSGSIZE; | |
1101 | cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); | |
1102 | if (!cmd_info) | |
1103 | return -EMSGSIZE; | |
4a6bb6d3 SF |
1104 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
1105 | rocker_port->pport)) | |
4b8ac966 JP |
1106 | return -EMSGSIZE; |
1107 | rocker_tlv_nest_end(desc_info, cmd_info); | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | static int | |
534ba6a8 | 1112 | rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port, |
e5054643 | 1113 | const struct rocker_desc_info *desc_info, |
4b8ac966 JP |
1114 | void *priv) |
1115 | { | |
de480150 | 1116 | struct ethtool_link_ksettings *ecmd = priv; |
e5054643 SH |
1117 | const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
1118 | const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; | |
4b8ac966 JP |
1119 | u32 speed; |
1120 | u8 duplex; | |
1121 | u8 autoneg; | |
1122 | ||
1123 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); | |
1124 | if (!attrs[ROCKER_TLV_CMD_INFO]) | |
1125 | return -EIO; | |
1126 | ||
1127 | rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, | |
1128 | attrs[ROCKER_TLV_CMD_INFO]); | |
1129 | if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] || | |
1130 | !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] || | |
1131 | !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) | |
1132 | return -EIO; | |
1133 | ||
1134 | speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); | |
1135 | duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); | |
1136 | autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); | |
1137 | ||
de480150 PR |
1138 | ethtool_link_ksettings_zero_link_mode(ecmd, supported); |
1139 | ethtool_link_ksettings_add_link_mode(ecmd, supported, TP); | |
1140 | ||
1141 | ecmd->base.phy_address = 0xff; | |
1142 | ecmd->base.port = PORT_TP; | |
1143 | ecmd->base.speed = speed; | |
1144 | ecmd->base.duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF; | |
1145 | ecmd->base.autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; | |
4b8ac966 JP |
1146 | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | static int | |
534ba6a8 | 1151 | rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port, |
e5054643 | 1152 | const struct rocker_desc_info *desc_info, |
4b8ac966 JP |
1153 | void *priv) |
1154 | { | |
1155 | unsigned char *macaddr = priv; | |
e5054643 SH |
1156 | const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
1157 | const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; | |
1158 | const struct rocker_tlv *attr; | |
4b8ac966 JP |
1159 | |
1160 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); | |
1161 | if (!attrs[ROCKER_TLV_CMD_INFO]) | |
1162 | return -EIO; | |
1163 | ||
1164 | rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, | |
1165 | attrs[ROCKER_TLV_CMD_INFO]); | |
1166 | attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; | |
1167 | if (!attr) | |
1168 | return -EIO; | |
1169 | ||
1170 | if (rocker_tlv_len(attr) != ETH_ALEN) | |
1171 | return -EINVAL; | |
1172 | ||
1173 | ether_addr_copy(macaddr, rocker_tlv_data(attr)); | |
1174 | return 0; | |
1175 | } | |
1176 | ||
e1ba3dee JP |
1177 | static int |
1178 | rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port, | |
1179 | const struct rocker_desc_info *desc_info, | |
1180 | void *priv) | |
1181 | { | |
1182 | u8 *p_mode = priv; | |
1183 | const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; | |
1184 | const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; | |
1185 | const struct rocker_tlv *attr; | |
1186 | ||
1187 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); | |
1188 | if (!attrs[ROCKER_TLV_CMD_INFO]) | |
1189 | return -EIO; | |
1190 | ||
1191 | rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, | |
1192 | attrs[ROCKER_TLV_CMD_INFO]); | |
1193 | attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]; | |
1194 | if (!attr) | |
1195 | return -EIO; | |
1196 | ||
1197 | *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); | |
1198 | return 0; | |
1199 | } | |
1200 | ||
db19170b DA |
1201 | struct port_name { |
1202 | char *buf; | |
1203 | size_t len; | |
1204 | }; | |
1205 | ||
1206 | static int | |
534ba6a8 | 1207 | rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port, |
e5054643 | 1208 | const struct rocker_desc_info *desc_info, |
db19170b DA |
1209 | void *priv) |
1210 | { | |
e5054643 SH |
1211 | const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; |
1212 | const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; | |
db19170b | 1213 | struct port_name *name = priv; |
e5054643 | 1214 | const struct rocker_tlv *attr; |
db19170b | 1215 | size_t i, j, len; |
e5054643 | 1216 | const char *str; |
db19170b DA |
1217 | |
1218 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); | |
1219 | if (!attrs[ROCKER_TLV_CMD_INFO]) | |
1220 | return -EIO; | |
1221 | ||
1222 | rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, | |
1223 | attrs[ROCKER_TLV_CMD_INFO]); | |
1224 | attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME]; | |
1225 | if (!attr) | |
1226 | return -EIO; | |
1227 | ||
1228 | len = min_t(size_t, rocker_tlv_len(attr), name->len); | |
1229 | str = rocker_tlv_data(attr); | |
1230 | ||
1231 | /* make sure name only contains alphanumeric characters */ | |
1232 | for (i = j = 0; i < len; ++i) { | |
1233 | if (isalnum(str[i])) { | |
1234 | name->buf[j] = str[i]; | |
1235 | j++; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | if (j == 0) | |
1240 | return -EIO; | |
1241 | ||
1242 | name->buf[j] = '\0'; | |
1243 | ||
1244 | return 0; | |
1245 | } | |
1246 | ||
4b8ac966 | 1247 | static int |
534ba6a8 | 1248 | rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port, |
4b8ac966 JP |
1249 | struct rocker_desc_info *desc_info, |
1250 | void *priv) | |
1251 | { | |
de480150 | 1252 | struct ethtool_link_ksettings *ecmd = priv; |
4b8ac966 JP |
1253 | struct rocker_tlv *cmd_info; |
1254 | ||
1255 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, | |
1256 | ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) | |
1257 | return -EMSGSIZE; | |
1258 | cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); | |
1259 | if (!cmd_info) | |
1260 | return -EMSGSIZE; | |
4a6bb6d3 SF |
1261 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
1262 | rocker_port->pport)) | |
4b8ac966 JP |
1263 | return -EMSGSIZE; |
1264 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, | |
de480150 | 1265 | ecmd->base.speed)) |
4b8ac966 JP |
1266 | return -EMSGSIZE; |
1267 | if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, | |
de480150 | 1268 | ecmd->base.duplex)) |
4b8ac966 JP |
1269 | return -EMSGSIZE; |
1270 | if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, | |
de480150 | 1271 | ecmd->base.autoneg)) |
4b8ac966 JP |
1272 | return -EMSGSIZE; |
1273 | rocker_tlv_nest_end(desc_info, cmd_info); | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | static int | |
534ba6a8 | 1278 | rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port, |
4b8ac966 JP |
1279 | struct rocker_desc_info *desc_info, |
1280 | void *priv) | |
1281 | { | |
e5054643 | 1282 | const unsigned char *macaddr = priv; |
4b8ac966 JP |
1283 | struct rocker_tlv *cmd_info; |
1284 | ||
1285 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, | |
1286 | ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) | |
1287 | return -EMSGSIZE; | |
1288 | cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); | |
1289 | if (!cmd_info) | |
1290 | return -EMSGSIZE; | |
4a6bb6d3 SF |
1291 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
1292 | rocker_port->pport)) | |
4b8ac966 JP |
1293 | return -EMSGSIZE; |
1294 | if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, | |
1295 | ETH_ALEN, macaddr)) | |
1296 | return -EMSGSIZE; | |
1297 | rocker_tlv_nest_end(desc_info, cmd_info); | |
1298 | return 0; | |
1299 | } | |
1300 | ||
77a58c74 SF |
1301 | static int |
1302 | rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port, | |
1303 | struct rocker_desc_info *desc_info, | |
1304 | void *priv) | |
1305 | { | |
1306 | int mtu = *(int *)priv; | |
1307 | struct rocker_tlv *cmd_info; | |
1308 | ||
1309 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, | |
1310 | ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) | |
1311 | return -EMSGSIZE; | |
1312 | cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); | |
1313 | if (!cmd_info) | |
1314 | return -EMSGSIZE; | |
1315 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, | |
1316 | rocker_port->pport)) | |
1317 | return -EMSGSIZE; | |
1318 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU, | |
1319 | mtu)) | |
1320 | return -EMSGSIZE; | |
1321 | rocker_tlv_nest_end(desc_info, cmd_info); | |
1322 | return 0; | |
1323 | } | |
1324 | ||
5111f80c | 1325 | static int |
534ba6a8 | 1326 | rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port, |
5111f80c SF |
1327 | struct rocker_desc_info *desc_info, |
1328 | void *priv) | |
1329 | { | |
c1fe922e | 1330 | bool learning = *(bool *)priv; |
5111f80c SF |
1331 | struct rocker_tlv *cmd_info; |
1332 | ||
1333 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, | |
1334 | ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) | |
1335 | return -EMSGSIZE; | |
1336 | cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); | |
1337 | if (!cmd_info) | |
1338 | return -EMSGSIZE; | |
4a6bb6d3 SF |
1339 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, |
1340 | rocker_port->pport)) | |
5111f80c SF |
1341 | return -EMSGSIZE; |
1342 | if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, | |
c1fe922e | 1343 | learning)) |
5111f80c SF |
1344 | return -EMSGSIZE; |
1345 | rocker_tlv_nest_end(desc_info, cmd_info); | |
1346 | return 0; | |
1347 | } | |
1348 | ||
de480150 PR |
1349 | static int |
1350 | rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port, | |
1351 | struct ethtool_link_ksettings *ecmd) | |
4b8ac966 | 1352 | { |
53901cc0 | 1353 | return rocker_cmd_exec(rocker_port, false, |
4b8ac966 JP |
1354 | rocker_cmd_get_port_settings_prep, NULL, |
1355 | rocker_cmd_get_port_settings_ethtool_proc, | |
c4f20321 | 1356 | ecmd); |
4b8ac966 JP |
1357 | } |
1358 | ||
1359 | static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, | |
1360 | unsigned char *macaddr) | |
1361 | { | |
53901cc0 | 1362 | return rocker_cmd_exec(rocker_port, false, |
4b8ac966 JP |
1363 | rocker_cmd_get_port_settings_prep, NULL, |
1364 | rocker_cmd_get_port_settings_macaddr_proc, | |
c4f20321 | 1365 | macaddr); |
4b8ac966 JP |
1366 | } |
1367 | ||
e1ba3dee JP |
1368 | static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port, |
1369 | u8 *p_mode) | |
1370 | { | |
53901cc0 | 1371 | return rocker_cmd_exec(rocker_port, false, |
e1ba3dee JP |
1372 | rocker_cmd_get_port_settings_prep, NULL, |
1373 | rocker_cmd_get_port_settings_mode_proc, p_mode); | |
1374 | } | |
1375 | ||
de480150 PR |
1376 | static int |
1377 | rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, | |
1378 | const struct ethtool_link_ksettings *ecmd) | |
4b8ac966 | 1379 | { |
de480150 PR |
1380 | struct ethtool_link_ksettings copy_ecmd; |
1381 | ||
1382 | memcpy(©_ecmd, ecmd, sizeof(copy_ecmd)); | |
1383 | ||
53901cc0 | 1384 | return rocker_cmd_exec(rocker_port, false, |
4b8ac966 | 1385 | rocker_cmd_set_port_settings_ethtool_prep, |
de480150 | 1386 | ©_ecmd, NULL, NULL); |
4b8ac966 JP |
1387 | } |
1388 | ||
1389 | static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, | |
1390 | unsigned char *macaddr) | |
1391 | { | |
53901cc0 | 1392 | return rocker_cmd_exec(rocker_port, false, |
4b8ac966 | 1393 | rocker_cmd_set_port_settings_macaddr_prep, |
c4f20321 | 1394 | macaddr, NULL, NULL); |
4b8ac966 JP |
1395 | } |
1396 | ||
77a58c74 SF |
1397 | static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port, |
1398 | int mtu) | |
1399 | { | |
53901cc0 | 1400 | return rocker_cmd_exec(rocker_port, false, |
77a58c74 SF |
1401 | rocker_cmd_set_port_settings_mtu_prep, |
1402 | &mtu, NULL, NULL); | |
1403 | } | |
1404 | ||
3fbcdbf3 JP |
1405 | int rocker_port_set_learning(struct rocker_port *rocker_port, |
1406 | bool learning) | |
5111f80c | 1407 | { |
53901cc0 | 1408 | return rocker_cmd_exec(rocker_port, false, |
5111f80c | 1409 | rocker_cmd_set_port_learning_prep, |
c1fe922e | 1410 | &learning, NULL, NULL); |
5111f80c SF |
1411 | } |
1412 | ||
e420114e JP |
1413 | /********************** |
1414 | * Worlds manipulation | |
1415 | **********************/ | |
1416 | ||
1417 | static struct rocker_world_ops *rocker_world_ops[] = { | |
1418 | &rocker_ofdpa_ops, | |
1419 | }; | |
1420 | ||
1421 | #define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops) | |
1422 | ||
1423 | static struct rocker_world_ops *rocker_world_ops_find(u8 mode) | |
1424 | { | |
1425 | int i; | |
1426 | ||
1427 | for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++) | |
1428 | if (rocker_world_ops[i]->mode == mode) | |
1429 | return rocker_world_ops[i]; | |
1430 | return NULL; | |
1431 | } | |
1432 | ||
1433 | static int rocker_world_init(struct rocker *rocker, u8 mode) | |
1434 | { | |
1435 | struct rocker_world_ops *wops; | |
1436 | int err; | |
1437 | ||
1438 | wops = rocker_world_ops_find(mode); | |
1439 | if (!wops) { | |
1440 | dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n", | |
1441 | mode); | |
1442 | return -EINVAL; | |
1443 | } | |
1444 | rocker->wops = wops; | |
1445 | rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL); | |
1446 | if (!rocker->wpriv) | |
1447 | return -ENOMEM; | |
1448 | if (!wops->init) | |
1449 | return 0; | |
1450 | err = wops->init(rocker); | |
1451 | if (err) | |
1452 | kfree(rocker->wpriv); | |
1453 | return err; | |
1454 | } | |
1455 | ||
1456 | static void rocker_world_fini(struct rocker *rocker) | |
1457 | { | |
1458 | struct rocker_world_ops *wops = rocker->wops; | |
1459 | ||
1460 | if (!wops || !wops->fini) | |
1461 | return; | |
1462 | wops->fini(rocker); | |
1463 | kfree(rocker->wpriv); | |
1464 | } | |
1465 | ||
1466 | static int rocker_world_check_init(struct rocker_port *rocker_port) | |
1467 | { | |
1468 | struct rocker *rocker = rocker_port->rocker; | |
1469 | u8 mode; | |
1470 | int err; | |
1471 | ||
1472 | err = rocker_cmd_get_port_settings_mode(rocker_port, &mode); | |
1473 | if (err) { | |
1474 | dev_err(&rocker->pdev->dev, "failed to get port mode\n"); | |
1475 | return err; | |
1476 | } | |
1477 | if (rocker->wops) { | |
1478 | if (rocker->wops->mode != mode) { | |
1479 | dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n"); | |
92d230dd | 1480 | return -EINVAL; |
e420114e JP |
1481 | } |
1482 | return 0; | |
1483 | } | |
1484 | return rocker_world_init(rocker, mode); | |
1485 | } | |
1486 | ||
1487 | static int rocker_world_port_pre_init(struct rocker_port *rocker_port) | |
1488 | { | |
1489 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1490 | int err; | |
1491 | ||
1492 | rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL); | |
1493 | if (!rocker_port->wpriv) | |
1494 | return -ENOMEM; | |
1495 | if (!wops->port_pre_init) | |
1496 | return 0; | |
1497 | err = wops->port_pre_init(rocker_port); | |
1498 | if (err) | |
1499 | kfree(rocker_port->wpriv); | |
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | static int rocker_world_port_init(struct rocker_port *rocker_port) | |
1504 | { | |
1505 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1506 | ||
1507 | if (!wops->port_init) | |
1508 | return 0; | |
1509 | return wops->port_init(rocker_port); | |
1510 | } | |
1511 | ||
1512 | static void rocker_world_port_fini(struct rocker_port *rocker_port) | |
1513 | { | |
1514 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1515 | ||
1516 | if (!wops->port_fini) | |
1517 | return; | |
1518 | wops->port_fini(rocker_port); | |
1519 | } | |
1520 | ||
1521 | static void rocker_world_port_post_fini(struct rocker_port *rocker_port) | |
1522 | { | |
1523 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1524 | ||
1525 | if (!wops->port_post_fini) | |
1526 | return; | |
1527 | wops->port_post_fini(rocker_port); | |
1528 | kfree(rocker_port->wpriv); | |
1529 | } | |
1530 | ||
1531 | static int rocker_world_port_open(struct rocker_port *rocker_port) | |
1532 | { | |
1533 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1534 | ||
1535 | if (!wops->port_open) | |
1536 | return 0; | |
1537 | return wops->port_open(rocker_port); | |
1538 | } | |
1539 | ||
1540 | static void rocker_world_port_stop(struct rocker_port *rocker_port) | |
1541 | { | |
1542 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1543 | ||
1544 | if (!wops->port_stop) | |
1545 | return; | |
1546 | wops->port_stop(rocker_port); | |
1547 | } | |
1548 | ||
1549 | static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port, | |
1550 | u8 state, | |
1551 | struct switchdev_trans *trans) | |
1552 | { | |
1553 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1554 | ||
1555 | if (!wops->port_attr_stp_state_set) | |
fccd84d4 | 1556 | return -EOPNOTSUPP; |
00fc0c51 AS |
1557 | |
1558 | if (switchdev_trans_ph_prepare(trans)) | |
1559 | return 0; | |
1560 | ||
1561 | return wops->port_attr_stp_state_set(rocker_port, state); | |
e420114e JP |
1562 | } |
1563 | ||
1564 | static int | |
93700458 FF |
1565 | rocker_world_port_attr_bridge_flags_support_get(const struct rocker_port * |
1566 | rocker_port, | |
1567 | unsigned long * | |
1568 | p_brport_flags_support) | |
e420114e JP |
1569 | { |
1570 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1571 | ||
93700458 FF |
1572 | if (!wops->port_attr_bridge_flags_support_get) |
1573 | return -EOPNOTSUPP; | |
1574 | return wops->port_attr_bridge_flags_support_get(rocker_port, | |
1575 | p_brport_flags_support); | |
1576 | } | |
1577 | ||
1578 | static int | |
1579 | rocker_world_port_attr_pre_bridge_flags_set(struct rocker_port *rocker_port, | |
1580 | unsigned long brport_flags, | |
1581 | struct switchdev_trans *trans) | |
1582 | { | |
1583 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1584 | unsigned long brport_flags_s; | |
1585 | int err; | |
1586 | ||
e420114e | 1587 | if (!wops->port_attr_bridge_flags_set) |
fccd84d4 | 1588 | return -EOPNOTSUPP; |
00fc0c51 | 1589 | |
93700458 FF |
1590 | err = rocker_world_port_attr_bridge_flags_support_get(rocker_port, |
1591 | &brport_flags_s); | |
1592 | if (err) | |
1593 | return err; | |
00fc0c51 | 1594 | |
93700458 FF |
1595 | if (brport_flags & ~brport_flags_s) |
1596 | return -EINVAL; | |
1597 | ||
1598 | return 0; | |
e420114e JP |
1599 | } |
1600 | ||
96673a30 | 1601 | static int |
93700458 FF |
1602 | rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port, |
1603 | unsigned long brport_flags, | |
1604 | struct switchdev_trans *trans) | |
96673a30 AS |
1605 | { |
1606 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1607 | ||
93700458 | 1608 | if (!wops->port_attr_bridge_flags_set) |
96673a30 | 1609 | return -EOPNOTSUPP; |
93700458 FF |
1610 | |
1611 | if (switchdev_trans_ph_prepare(trans)) | |
1612 | return 0; | |
1613 | ||
1614 | return wops->port_attr_bridge_flags_set(rocker_port, brport_flags, | |
1615 | trans); | |
96673a30 AS |
1616 | } |
1617 | ||
e420114e JP |
1618 | static int |
1619 | rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port, | |
1620 | u32 ageing_time, | |
1621 | struct switchdev_trans *trans) | |
1622 | ||
1623 | { | |
1624 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1625 | ||
1626 | if (!wops->port_attr_bridge_ageing_time_set) | |
fccd84d4 | 1627 | return -EOPNOTSUPP; |
00fc0c51 AS |
1628 | |
1629 | if (switchdev_trans_ph_prepare(trans)) | |
1630 | return 0; | |
1631 | ||
e420114e JP |
1632 | return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time, |
1633 | trans); | |
1634 | } | |
1635 | ||
1636 | static int | |
1637 | rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port, | |
1638 | const struct switchdev_obj_port_vlan *vlan, | |
1639 | struct switchdev_trans *trans) | |
1640 | { | |
1641 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1642 | ||
1643 | if (!wops->port_obj_vlan_add) | |
fccd84d4 | 1644 | return -EOPNOTSUPP; |
00fc0c51 AS |
1645 | |
1646 | if (switchdev_trans_ph_prepare(trans)) | |
1647 | return 0; | |
1648 | ||
1649 | return wops->port_obj_vlan_add(rocker_port, vlan); | |
e420114e JP |
1650 | } |
1651 | ||
1652 | static int | |
1653 | rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port, | |
1654 | const struct switchdev_obj_port_vlan *vlan) | |
1655 | { | |
1656 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1657 | ||
2855118f PM |
1658 | if (netif_is_bridge_master(vlan->obj.orig_dev)) |
1659 | return -EOPNOTSUPP; | |
1660 | ||
e420114e | 1661 | if (!wops->port_obj_vlan_del) |
fccd84d4 | 1662 | return -EOPNOTSUPP; |
e420114e JP |
1663 | return wops->port_obj_vlan_del(rocker_port, vlan); |
1664 | } | |
1665 | ||
726fd42f AS |
1666 | static int |
1667 | rocker_world_port_fdb_add(struct rocker_port *rocker_port, | |
1668 | struct switchdev_notifier_fdb_info *info) | |
1669 | { | |
1670 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1671 | ||
1672 | if (!wops->port_obj_fdb_add) | |
1673 | return -EOPNOTSUPP; | |
1674 | ||
1675 | return wops->port_obj_fdb_add(rocker_port, info->vid, info->addr); | |
1676 | } | |
1677 | ||
1678 | static int | |
1679 | rocker_world_port_fdb_del(struct rocker_port *rocker_port, | |
1680 | struct switchdev_notifier_fdb_info *info) | |
1681 | { | |
1682 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1683 | ||
1684 | if (!wops->port_obj_fdb_del) | |
1685 | return -EOPNOTSUPP; | |
1686 | return wops->port_obj_fdb_del(rocker_port, info->vid, info->addr); | |
1687 | } | |
1688 | ||
e420114e JP |
1689 | static int rocker_world_port_master_linked(struct rocker_port *rocker_port, |
1690 | struct net_device *master) | |
1691 | { | |
1692 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1693 | ||
1694 | if (!wops->port_master_linked) | |
fccd84d4 | 1695 | return -EOPNOTSUPP; |
e420114e JP |
1696 | return wops->port_master_linked(rocker_port, master); |
1697 | } | |
1698 | ||
1699 | static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port, | |
1700 | struct net_device *master) | |
1701 | { | |
1702 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1703 | ||
1704 | if (!wops->port_master_unlinked) | |
fccd84d4 | 1705 | return -EOPNOTSUPP; |
e420114e JP |
1706 | return wops->port_master_unlinked(rocker_port, master); |
1707 | } | |
1708 | ||
1709 | static int rocker_world_port_neigh_update(struct rocker_port *rocker_port, | |
1710 | struct neighbour *n) | |
1711 | { | |
1712 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1713 | ||
1714 | if (!wops->port_neigh_update) | |
fccd84d4 | 1715 | return -EOPNOTSUPP; |
e420114e JP |
1716 | return wops->port_neigh_update(rocker_port, n); |
1717 | } | |
1718 | ||
1719 | static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port, | |
1720 | struct neighbour *n) | |
1721 | { | |
1722 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1723 | ||
1724 | if (!wops->port_neigh_destroy) | |
fccd84d4 | 1725 | return -EOPNOTSUPP; |
e420114e JP |
1726 | return wops->port_neigh_destroy(rocker_port, n); |
1727 | } | |
1728 | ||
1729 | static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, | |
1730 | const unsigned char *addr, | |
1731 | __be16 vlan_id) | |
1732 | { | |
1733 | struct rocker_world_ops *wops = rocker_port->rocker->wops; | |
1734 | ||
1735 | if (!wops->port_ev_mac_vlan_seen) | |
fccd84d4 | 1736 | return -EOPNOTSUPP; |
e420114e JP |
1737 | return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); |
1738 | } | |
1739 | ||
936bd486 JP |
1740 | static int rocker_world_fib4_add(struct rocker *rocker, |
1741 | const struct fib_entry_notifier_info *fen_info) | |
1742 | { | |
1743 | struct rocker_world_ops *wops = rocker->wops; | |
1744 | ||
1745 | if (!wops->fib4_add) | |
1746 | return 0; | |
1747 | return wops->fib4_add(rocker, fen_info); | |
1748 | } | |
1749 | ||
1750 | static int rocker_world_fib4_del(struct rocker *rocker, | |
1751 | const struct fib_entry_notifier_info *fen_info) | |
1752 | { | |
1753 | struct rocker_world_ops *wops = rocker->wops; | |
1754 | ||
1755 | if (!wops->fib4_del) | |
1756 | return 0; | |
1757 | return wops->fib4_del(rocker, fen_info); | |
1758 | } | |
1759 | ||
1760 | static void rocker_world_fib4_abort(struct rocker *rocker) | |
1761 | { | |
1762 | struct rocker_world_ops *wops = rocker->wops; | |
1763 | ||
1764 | if (wops->fib4_abort) | |
1765 | wops->fib4_abort(rocker); | |
1766 | } | |
1767 | ||
3fbcdbf3 JP |
1768 | /***************** |
1769 | * Net device ops | |
1770 | *****************/ | |
1771 | ||
1772 | static int rocker_port_open(struct net_device *dev) | |
9f6bbf7c | 1773 | { |
3fbcdbf3 JP |
1774 | struct rocker_port *rocker_port = netdev_priv(dev); |
1775 | int err; | |
9f6bbf7c | 1776 | |
3fbcdbf3 JP |
1777 | err = rocker_port_dma_rings_init(rocker_port); |
1778 | if (err) | |
1779 | return err; | |
9f6bbf7c | 1780 | |
3fbcdbf3 JP |
1781 | err = request_irq(rocker_msix_tx_vector(rocker_port), |
1782 | rocker_tx_irq_handler, 0, | |
1783 | rocker_driver_name, rocker_port); | |
1784 | if (err) { | |
1785 | netdev_err(rocker_port->dev, "cannot assign tx irq\n"); | |
1786 | goto err_request_tx_irq; | |
1787 | } | |
9f6bbf7c | 1788 | |
3fbcdbf3 JP |
1789 | err = request_irq(rocker_msix_rx_vector(rocker_port), |
1790 | rocker_rx_irq_handler, 0, | |
1791 | rocker_driver_name, rocker_port); | |
1792 | if (err) { | |
1793 | netdev_err(rocker_port->dev, "cannot assign rx irq\n"); | |
1794 | goto err_request_rx_irq; | |
1795 | } | |
9f6bbf7c | 1796 | |
3fbcdbf3 JP |
1797 | err = rocker_world_port_open(rocker_port); |
1798 | if (err) { | |
1799 | netdev_err(rocker_port->dev, "cannot open port in world\n"); | |
1800 | goto err_world_port_open; | |
1801 | } | |
9f6bbf7c | 1802 | |
3fbcdbf3 JP |
1803 | napi_enable(&rocker_port->napi_tx); |
1804 | napi_enable(&rocker_port->napi_rx); | |
1805 | if (!dev->proto_down) | |
1806 | rocker_port_set_enable(rocker_port, true); | |
1807 | netif_start_queue(dev); | |
9f6bbf7c | 1808 | return 0; |
3fbcdbf3 JP |
1809 | |
1810 | err_world_port_open: | |
1811 | free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); | |
1812 | err_request_rx_irq: | |
1813 | free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); | |
1814 | err_request_tx_irq: | |
1815 | rocker_port_dma_rings_fini(rocker_port); | |
1816 | return err; | |
9f6bbf7c SF |
1817 | } |
1818 | ||
3fbcdbf3 | 1819 | static int rocker_port_stop(struct net_device *dev) |
9f6bbf7c | 1820 | { |
3fbcdbf3 JP |
1821 | struct rocker_port *rocker_port = netdev_priv(dev); |
1822 | ||
1823 | netif_stop_queue(dev); | |
1824 | rocker_port_set_enable(rocker_port, false); | |
1825 | napi_disable(&rocker_port->napi_rx); | |
1826 | napi_disable(&rocker_port->napi_tx); | |
1827 | rocker_world_port_stop(rocker_port); | |
1828 | free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); | |
1829 | free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); | |
1830 | rocker_port_dma_rings_fini(rocker_port); | |
9f6bbf7c SF |
1831 | |
1832 | return 0; | |
1833 | } | |
1834 | ||
3fbcdbf3 JP |
1835 | static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port, |
1836 | const struct rocker_desc_info *desc_info) | |
9f6bbf7c | 1837 | { |
3fbcdbf3 JP |
1838 | const struct rocker *rocker = rocker_port->rocker; |
1839 | struct pci_dev *pdev = rocker->pdev; | |
1840 | const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1]; | |
1841 | struct rocker_tlv *attr; | |
1842 | int rem; | |
9f6bbf7c | 1843 | |
3fbcdbf3 JP |
1844 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info); |
1845 | if (!attrs[ROCKER_TLV_TX_FRAGS]) | |
1846 | return; | |
1847 | rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) { | |
1848 | const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1]; | |
1849 | dma_addr_t dma_handle; | |
1850 | size_t len; | |
1851 | ||
1852 | if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG) | |
1853 | continue; | |
1854 | rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX, | |
1855 | attr); | |
1856 | if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || | |
1857 | !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) | |
1858 | continue; | |
1859 | dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); | |
1860 | len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); | |
1861 | pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE); | |
1862 | } | |
9f6bbf7c SF |
1863 | } |
1864 | ||
3fbcdbf3 JP |
1865 | static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port, |
1866 | struct rocker_desc_info *desc_info, | |
1867 | char *buf, size_t buf_len) | |
9f6bbf7c | 1868 | { |
3fbcdbf3 JP |
1869 | const struct rocker *rocker = rocker_port->rocker; |
1870 | struct pci_dev *pdev = rocker->pdev; | |
1871 | dma_addr_t dma_handle; | |
1872 | struct rocker_tlv *frag; | |
9f6bbf7c | 1873 | |
3fbcdbf3 JP |
1874 | dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE); |
1875 | if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) { | |
1876 | if (net_ratelimit()) | |
1877 | netdev_err(rocker_port->dev, "failed to dma map tx frag\n"); | |
1878 | return -EIO; | |
9f6bbf7c | 1879 | } |
3fbcdbf3 JP |
1880 | frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG); |
1881 | if (!frag) | |
1882 | goto unmap_frag; | |
1883 | if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR, | |
1884 | dma_handle)) | |
1885 | goto nest_cancel; | |
1886 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN, | |
1887 | buf_len)) | |
1888 | goto nest_cancel; | |
1889 | rocker_tlv_nest_end(desc_info, frag); | |
9f6bbf7c | 1890 | return 0; |
3fbcdbf3 JP |
1891 | |
1892 | nest_cancel: | |
1893 | rocker_tlv_nest_cancel(desc_info, frag); | |
1894 | unmap_frag: | |
1895 | pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE); | |
1896 | return -EMSGSIZE; | |
9f6bbf7c SF |
1897 | } |
1898 | ||
3fbcdbf3 | 1899 | static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev) |
9f6bbf7c | 1900 | { |
3fbcdbf3 JP |
1901 | struct rocker_port *rocker_port = netdev_priv(dev); |
1902 | struct rocker *rocker = rocker_port->rocker; | |
1903 | struct rocker_desc_info *desc_info; | |
1904 | struct rocker_tlv *frags; | |
1905 | int i; | |
1906 | int err; | |
4b8ac966 JP |
1907 | |
1908 | desc_info = rocker_desc_head_get(&rocker_port->tx_ring); | |
1909 | if (unlikely(!desc_info)) { | |
1910 | if (net_ratelimit()) | |
1911 | netdev_err(dev, "tx ring full when queue awake\n"); | |
1912 | return NETDEV_TX_BUSY; | |
1913 | } | |
1914 | ||
1915 | rocker_desc_cookie_ptr_set(desc_info, skb); | |
1916 | ||
1917 | frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS); | |
1918 | if (!frags) | |
1919 | goto out; | |
1920 | err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, | |
1921 | skb->data, skb_headlen(skb)); | |
1922 | if (err) | |
1923 | goto nest_cancel; | |
95b9be64 JP |
1924 | if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) { |
1925 | err = skb_linearize(skb); | |
1926 | if (err) | |
1927 | goto unmap_frags; | |
1928 | } | |
4b8ac966 JP |
1929 | |
1930 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1931 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
1932 | ||
1933 | err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, | |
1934 | skb_frag_address(frag), | |
1935 | skb_frag_size(frag)); | |
1936 | if (err) | |
1937 | goto unmap_frags; | |
1938 | } | |
1939 | rocker_tlv_nest_end(desc_info, frags); | |
1940 | ||
1941 | rocker_desc_gen_clear(desc_info); | |
1942 | rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info); | |
1943 | ||
1944 | desc_info = rocker_desc_head_get(&rocker_port->tx_ring); | |
1945 | if (!desc_info) | |
1946 | netif_stop_queue(dev); | |
1947 | ||
1948 | return NETDEV_TX_OK; | |
1949 | ||
1950 | unmap_frags: | |
1951 | rocker_tx_desc_frags_unmap(rocker_port, desc_info); | |
1952 | nest_cancel: | |
1953 | rocker_tlv_nest_cancel(desc_info, frags); | |
1954 | out: | |
1955 | dev_kfree_skb(skb); | |
f2bbca51 DA |
1956 | dev->stats.tx_dropped++; |
1957 | ||
4b8ac966 JP |
1958 | return NETDEV_TX_OK; |
1959 | } | |
1960 | ||
1961 | static int rocker_port_set_mac_address(struct net_device *dev, void *p) | |
1962 | { | |
1963 | struct sockaddr *addr = p; | |
1964 | struct rocker_port *rocker_port = netdev_priv(dev); | |
1965 | int err; | |
1966 | ||
1967 | if (!is_valid_ether_addr(addr->sa_data)) | |
1968 | return -EADDRNOTAVAIL; | |
1969 | ||
1970 | err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data); | |
1971 | if (err) | |
1972 | return err; | |
1973 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1974 | return 0; | |
1975 | } | |
1976 | ||
77a58c74 SF |
1977 | static int rocker_port_change_mtu(struct net_device *dev, int new_mtu) |
1978 | { | |
1979 | struct rocker_port *rocker_port = netdev_priv(dev); | |
1980 | int running = netif_running(dev); | |
1981 | int err; | |
1982 | ||
77a58c74 SF |
1983 | if (running) |
1984 | rocker_port_stop(dev); | |
1985 | ||
1986 | netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu); | |
1987 | dev->mtu = new_mtu; | |
1988 | ||
1989 | err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu); | |
1990 | if (err) | |
1991 | return err; | |
1992 | ||
1993 | if (running) | |
1994 | err = rocker_port_open(dev); | |
1995 | ||
1996 | return err; | |
1997 | } | |
1998 | ||
db19170b DA |
1999 | static int rocker_port_get_phys_port_name(struct net_device *dev, |
2000 | char *buf, size_t len) | |
2001 | { | |
2002 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2003 | struct port_name name = { .buf = buf, .len = len }; | |
2004 | int err; | |
2005 | ||
53901cc0 | 2006 | err = rocker_cmd_exec(rocker_port, false, |
db19170b DA |
2007 | rocker_cmd_get_port_settings_prep, NULL, |
2008 | rocker_cmd_get_port_settings_phys_name_proc, | |
c4f20321 | 2009 | &name); |
db19170b DA |
2010 | |
2011 | return err ? -EOPNOTSUPP : 0; | |
2012 | } | |
2013 | ||
c3055246 AK |
2014 | static int rocker_port_change_proto_down(struct net_device *dev, |
2015 | bool proto_down) | |
2016 | { | |
2017 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2018 | ||
2019 | if (rocker_port->dev->flags & IFF_UP) | |
2020 | rocker_port_set_enable(rocker_port, !proto_down); | |
2021 | rocker_port->dev->proto_down = proto_down; | |
2022 | return 0; | |
2023 | } | |
2024 | ||
503eebc2 JP |
2025 | static void rocker_port_neigh_destroy(struct net_device *dev, |
2026 | struct neighbour *n) | |
dd19f83d SF |
2027 | { |
2028 | struct rocker_port *rocker_port = netdev_priv(n->dev); | |
e420114e | 2029 | int err; |
dd19f83d | 2030 | |
e420114e JP |
2031 | err = rocker_world_port_neigh_destroy(rocker_port, n); |
2032 | if (err) | |
2033 | netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n", | |
2034 | err); | |
dd19f83d SF |
2035 | } |
2036 | ||
7026b8a6 FF |
2037 | static int rocker_port_get_port_parent_id(struct net_device *dev, |
2038 | struct netdev_phys_item_id *ppid) | |
2039 | { | |
2040 | const struct rocker_port *rocker_port = netdev_priv(dev); | |
2041 | const struct rocker *rocker = rocker_port->rocker; | |
2042 | ||
2043 | ppid->id_len = sizeof(rocker->hw.id); | |
2044 | memcpy(&ppid->id, &rocker->hw.id, ppid->id_len); | |
2045 | ||
2046 | return 0; | |
2047 | } | |
2048 | ||
98237d43 SF |
2049 | static const struct net_device_ops rocker_port_netdev_ops = { |
2050 | .ndo_open = rocker_port_open, | |
2051 | .ndo_stop = rocker_port_stop, | |
2052 | .ndo_start_xmit = rocker_port_xmit, | |
2053 | .ndo_set_mac_address = rocker_port_set_mac_address, | |
77a58c74 | 2054 | .ndo_change_mtu = rocker_port_change_mtu, |
db19170b | 2055 | .ndo_get_phys_port_name = rocker_port_get_phys_port_name, |
c3055246 | 2056 | .ndo_change_proto_down = rocker_port_change_proto_down, |
dd19f83d | 2057 | .ndo_neigh_destroy = rocker_port_neigh_destroy, |
7026b8a6 | 2058 | .ndo_get_port_parent_id = rocker_port_get_port_parent_id, |
98237d43 SF |
2059 | }; |
2060 | ||
2061 | /******************** | |
2062 | * swdev interface | |
2063 | ********************/ | |
2064 | ||
c4f20321 | 2065 | static int rocker_port_attr_set(struct net_device *dev, |
f7fadf30 | 2066 | const struct switchdev_attr *attr, |
7ea6eb3f | 2067 | struct switchdev_trans *trans) |
c4f20321 SF |
2068 | { |
2069 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2070 | int err = 0; | |
2071 | ||
c4f20321 | 2072 | switch (attr->id) { |
1f868398 | 2073 | case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
e420114e JP |
2074 | err = rocker_world_port_attr_stp_state_set(rocker_port, |
2075 | attr->u.stp_state, | |
2076 | trans); | |
35636062 | 2077 | break; |
93700458 FF |
2078 | case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: |
2079 | err = rocker_world_port_attr_pre_bridge_flags_set(rocker_port, | |
2080 | attr->u.brport_flags, | |
2081 | trans); | |
7a25c6c0 | 2082 | break; |
1f868398 | 2083 | case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: |
e420114e JP |
2084 | err = rocker_world_port_attr_bridge_flags_set(rocker_port, |
2085 | attr->u.brport_flags, | |
2086 | trans); | |
6004c867 | 2087 | break; |
d0cf57f9 | 2088 | case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: |
e420114e JP |
2089 | err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port, |
2090 | attr->u.ageing_time, | |
2091 | trans); | |
d0cf57f9 | 2092 | break; |
c4f20321 SF |
2093 | default: |
2094 | err = -EOPNOTSUPP; | |
2095 | break; | |
2096 | } | |
2097 | ||
2098 | return err; | |
6c707945 SF |
2099 | } |
2100 | ||
9228ad26 | 2101 | static int rocker_port_obj_add(struct net_device *dev, |
648b4a99 | 2102 | const struct switchdev_obj *obj, |
7ea6eb3f | 2103 | struct switchdev_trans *trans) |
9228ad26 SF |
2104 | { |
2105 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2106 | int err = 0; | |
2107 | ||
9e8f4a54 | 2108 | switch (obj->id) { |
57d80838 | 2109 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
e420114e JP |
2110 | err = rocker_world_port_obj_vlan_add(rocker_port, |
2111 | SWITCHDEV_OBJ_PORT_VLAN(obj), | |
2112 | trans); | |
9228ad26 SF |
2113 | break; |
2114 | default: | |
2115 | err = -EOPNOTSUPP; | |
2116 | break; | |
2117 | } | |
2118 | ||
2119 | return err; | |
2120 | } | |
2121 | ||
9228ad26 | 2122 | static int rocker_port_obj_del(struct net_device *dev, |
648b4a99 | 2123 | const struct switchdev_obj *obj) |
9228ad26 SF |
2124 | { |
2125 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2126 | int err = 0; | |
2127 | ||
9e8f4a54 | 2128 | switch (obj->id) { |
57d80838 | 2129 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
e420114e JP |
2130 | err = rocker_world_port_obj_vlan_del(rocker_port, |
2131 | SWITCHDEV_OBJ_PORT_VLAN(obj)); | |
9228ad26 SF |
2132 | break; |
2133 | default: | |
2134 | err = -EOPNOTSUPP; | |
2135 | break; | |
2136 | } | |
2137 | ||
2138 | return err; | |
2139 | } | |
2140 | ||
db701955 IS |
2141 | struct rocker_fib_event_work { |
2142 | struct work_struct work; | |
5d7bfd14 IS |
2143 | union { |
2144 | struct fib_entry_notifier_info fen_info; | |
2145 | struct fib_rule_notifier_info fr_info; | |
2146 | }; | |
db701955 IS |
2147 | struct rocker *rocker; |
2148 | unsigned long event; | |
2149 | }; | |
2150 | ||
2151 | static void rocker_router_fib_event_work(struct work_struct *work) | |
936bd486 | 2152 | { |
db701955 IS |
2153 | struct rocker_fib_event_work *fib_work = |
2154 | container_of(work, struct rocker_fib_event_work, work); | |
2155 | struct rocker *rocker = fib_work->rocker; | |
5d7bfd14 | 2156 | struct fib_rule *rule; |
936bd486 JP |
2157 | int err; |
2158 | ||
db701955 IS |
2159 | /* Protect internal structures from changes */ |
2160 | rtnl_lock(); | |
2161 | switch (fib_work->event) { | |
446f7391 | 2162 | case FIB_EVENT_ENTRY_REPLACE: |
db701955 | 2163 | err = rocker_world_fib4_add(rocker, &fib_work->fen_info); |
936bd486 JP |
2164 | if (err) |
2165 | rocker_world_fib4_abort(rocker); | |
db701955 | 2166 | fib_info_put(fib_work->fen_info.fi); |
936bd486 JP |
2167 | break; |
2168 | case FIB_EVENT_ENTRY_DEL: | |
db701955 IS |
2169 | rocker_world_fib4_del(rocker, &fib_work->fen_info); |
2170 | fib_info_put(fib_work->fen_info.fi); | |
936bd486 | 2171 | break; |
df561f66 | 2172 | case FIB_EVENT_RULE_ADD: |
936bd486 | 2173 | case FIB_EVENT_RULE_DEL: |
5d7bfd14 IS |
2174 | rule = fib_work->fr_info.rule; |
2175 | if (!fib4_rule_default(rule)) | |
2176 | rocker_world_fib4_abort(rocker); | |
2177 | fib_rule_put(rule); | |
936bd486 JP |
2178 | break; |
2179 | } | |
db701955 IS |
2180 | rtnl_unlock(); |
2181 | kfree(fib_work); | |
2182 | } | |
2183 | ||
2184 | /* Called with rcu_read_lock() */ | |
2185 | static int rocker_router_fib_event(struct notifier_block *nb, | |
2186 | unsigned long event, void *ptr) | |
2187 | { | |
2188 | struct rocker *rocker = container_of(nb, struct rocker, fib_nb); | |
2189 | struct rocker_fib_event_work *fib_work; | |
d371ac1e IS |
2190 | struct fib_notifier_info *info = ptr; |
2191 | ||
2192 | if (info->family != AF_INET) | |
2193 | return NOTIFY_DONE; | |
db701955 IS |
2194 | |
2195 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
2196 | if (WARN_ON(!fib_work)) | |
2197 | return NOTIFY_BAD; | |
2198 | ||
2199 | INIT_WORK(&fib_work->work, rocker_router_fib_event_work); | |
2200 | fib_work->rocker = rocker; | |
2201 | fib_work->event = event; | |
2202 | ||
2203 | switch (event) { | |
df561f66 | 2204 | case FIB_EVENT_ENTRY_REPLACE: |
db701955 | 2205 | case FIB_EVENT_ENTRY_DEL: |
19a9d136 DA |
2206 | if (info->family == AF_INET) { |
2207 | struct fib_entry_notifier_info *fen_info = ptr; | |
2208 | ||
2209 | if (fen_info->fi->fib_nh_is_v6) { | |
2210 | NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported"); | |
011f1754 | 2211 | kfree(fib_work); |
19a9d136 DA |
2212 | return notifier_from_errno(-EINVAL); |
2213 | } | |
dbcc4fa7 DA |
2214 | if (fen_info->fi->nh) { |
2215 | NL_SET_ERR_MSG_MOD(info->extack, "IPv4 route with nexthop objects is not supported"); | |
011f1754 | 2216 | kfree(fib_work); |
dbcc4fa7 DA |
2217 | return notifier_from_errno(-EINVAL); |
2218 | } | |
19a9d136 DA |
2219 | } |
2220 | ||
db701955 IS |
2221 | memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); |
2222 | /* Take referece on fib_info to prevent it from being | |
2223 | * freed while work is queued. Release it afterwards. | |
2224 | */ | |
2225 | fib_info_hold(fib_work->fen_info.fi); | |
2226 | break; | |
df561f66 | 2227 | case FIB_EVENT_RULE_ADD: |
5d7bfd14 IS |
2228 | case FIB_EVENT_RULE_DEL: |
2229 | memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); | |
2230 | fib_rule_get(fib_work->fr_info.rule); | |
2231 | break; | |
db701955 IS |
2232 | } |
2233 | ||
2234 | queue_work(rocker->rocker_owq, &fib_work->work); | |
2235 | ||
936bd486 JP |
2236 | return NOTIFY_DONE; |
2237 | } | |
2238 | ||
4b8ac966 JP |
2239 | /******************** |
2240 | * ethtool interface | |
2241 | ********************/ | |
2242 | ||
de480150 PR |
2243 | static int |
2244 | rocker_port_get_link_ksettings(struct net_device *dev, | |
2245 | struct ethtool_link_ksettings *ecmd) | |
4b8ac966 JP |
2246 | { |
2247 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2248 | ||
2249 | return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd); | |
2250 | } | |
2251 | ||
de480150 PR |
2252 | static int |
2253 | rocker_port_set_link_ksettings(struct net_device *dev, | |
2254 | const struct ethtool_link_ksettings *ecmd) | |
4b8ac966 JP |
2255 | { |
2256 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2257 | ||
2258 | return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd); | |
2259 | } | |
2260 | ||
2261 | static void rocker_port_get_drvinfo(struct net_device *dev, | |
2262 | struct ethtool_drvinfo *drvinfo) | |
2263 | { | |
2264 | strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver)); | |
2265 | strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); | |
2266 | } | |
2267 | ||
9766e97a DA |
2268 | static struct rocker_port_stats { |
2269 | char str[ETH_GSTRING_LEN]; | |
2270 | int type; | |
2271 | } rocker_port_stats[] = { | |
2272 | { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, }, | |
2273 | { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, }, | |
2274 | { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, }, | |
2275 | { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, }, | |
2276 | ||
2277 | { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, }, | |
2278 | { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, }, | |
2279 | { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, }, | |
2280 | { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, }, | |
2281 | }; | |
2282 | ||
2283 | #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats) | |
2284 | ||
2285 | static void rocker_port_get_strings(struct net_device *netdev, u32 stringset, | |
2286 | u8 *data) | |
2287 | { | |
2288 | u8 *p = data; | |
2289 | int i; | |
2290 | ||
2291 | switch (stringset) { | |
2292 | case ETH_SS_STATS: | |
2293 | for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { | |
2294 | memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN); | |
2295 | p += ETH_GSTRING_LEN; | |
2296 | } | |
2297 | break; | |
2298 | } | |
2299 | } | |
2300 | ||
2301 | static int | |
534ba6a8 | 2302 | rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port, |
9766e97a DA |
2303 | struct rocker_desc_info *desc_info, |
2304 | void *priv) | |
2305 | { | |
2306 | struct rocker_tlv *cmd_stats; | |
2307 | ||
2308 | if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, | |
2309 | ROCKER_TLV_CMD_TYPE_GET_PORT_STATS)) | |
2310 | return -EMSGSIZE; | |
2311 | ||
2312 | cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); | |
2313 | if (!cmd_stats) | |
2314 | return -EMSGSIZE; | |
2315 | ||
4a6bb6d3 SF |
2316 | if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT, |
2317 | rocker_port->pport)) | |
9766e97a DA |
2318 | return -EMSGSIZE; |
2319 | ||
2320 | rocker_tlv_nest_end(desc_info, cmd_stats); | |
2321 | ||
2322 | return 0; | |
2323 | } | |
2324 | ||
2325 | static int | |
534ba6a8 | 2326 | rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port, |
e5054643 | 2327 | const struct rocker_desc_info *desc_info, |
9766e97a DA |
2328 | void *priv) |
2329 | { | |
e5054643 SH |
2330 | const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; |
2331 | const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; | |
2332 | const struct rocker_tlv *pattr; | |
4a6bb6d3 | 2333 | u32 pport; |
9766e97a DA |
2334 | u64 *data = priv; |
2335 | int i; | |
2336 | ||
2337 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); | |
2338 | ||
2339 | if (!attrs[ROCKER_TLV_CMD_INFO]) | |
2340 | return -EIO; | |
2341 | ||
2342 | rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX, | |
2343 | attrs[ROCKER_TLV_CMD_INFO]); | |
2344 | ||
4a6bb6d3 | 2345 | if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]) |
9766e97a DA |
2346 | return -EIO; |
2347 | ||
4a6bb6d3 SF |
2348 | pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]); |
2349 | if (pport != rocker_port->pport) | |
9766e97a DA |
2350 | return -EIO; |
2351 | ||
2352 | for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { | |
2353 | pattr = stats_attrs[rocker_port_stats[i].type]; | |
2354 | if (!pattr) | |
2355 | continue; | |
2356 | ||
2357 | data[i] = rocker_tlv_get_u64(pattr); | |
2358 | } | |
2359 | ||
2360 | return 0; | |
2361 | } | |
2362 | ||
2363 | static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port, | |
2364 | void *priv) | |
2365 | { | |
53901cc0 | 2366 | return rocker_cmd_exec(rocker_port, false, |
9766e97a DA |
2367 | rocker_cmd_get_port_stats_prep, NULL, |
2368 | rocker_cmd_get_port_stats_ethtool_proc, | |
c4f20321 | 2369 | priv); |
9766e97a DA |
2370 | } |
2371 | ||
2372 | static void rocker_port_get_stats(struct net_device *dev, | |
2373 | struct ethtool_stats *stats, u64 *data) | |
2374 | { | |
2375 | struct rocker_port *rocker_port = netdev_priv(dev); | |
2376 | ||
2377 | if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) { | |
2378 | int i; | |
2379 | ||
2380 | for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i) | |
2381 | data[i] = 0; | |
2382 | } | |
9766e97a DA |
2383 | } |
2384 | ||
2385 | static int rocker_port_get_sset_count(struct net_device *netdev, int sset) | |
2386 | { | |
2387 | switch (sset) { | |
2388 | case ETH_SS_STATS: | |
2389 | return ROCKER_PORT_STATS_LEN; | |
2390 | default: | |
2391 | return -EOPNOTSUPP; | |
2392 | } | |
2393 | } | |
2394 | ||
4b8ac966 | 2395 | static const struct ethtool_ops rocker_port_ethtool_ops = { |
4b8ac966 JP |
2396 | .get_drvinfo = rocker_port_get_drvinfo, |
2397 | .get_link = ethtool_op_get_link, | |
9766e97a DA |
2398 | .get_strings = rocker_port_get_strings, |
2399 | .get_ethtool_stats = rocker_port_get_stats, | |
2400 | .get_sset_count = rocker_port_get_sset_count, | |
de480150 PR |
2401 | .get_link_ksettings = rocker_port_get_link_ksettings, |
2402 | .set_link_ksettings = rocker_port_set_link_ksettings, | |
4b8ac966 JP |
2403 | }; |
2404 | ||
2405 | /***************** | |
2406 | * NAPI interface | |
2407 | *****************/ | |
2408 | ||
2409 | static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi) | |
2410 | { | |
2411 | return container_of(napi, struct rocker_port, napi_tx); | |
2412 | } | |
2413 | ||
2414 | static int rocker_port_poll_tx(struct napi_struct *napi, int budget) | |
2415 | { | |
2416 | struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi); | |
e5054643 SH |
2417 | const struct rocker *rocker = rocker_port->rocker; |
2418 | const struct rocker_desc_info *desc_info; | |
4b8ac966 JP |
2419 | u32 credits = 0; |
2420 | int err; | |
2421 | ||
2422 | /* Cleanup tx descriptors */ | |
2423 | while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) { | |
f2bbca51 DA |
2424 | struct sk_buff *skb; |
2425 | ||
4b8ac966 JP |
2426 | err = rocker_desc_err(desc_info); |
2427 | if (err && net_ratelimit()) | |
2428 | netdev_err(rocker_port->dev, "tx desc received with err %d\n", | |
2429 | err); | |
2430 | rocker_tx_desc_frags_unmap(rocker_port, desc_info); | |
f2bbca51 DA |
2431 | |
2432 | skb = rocker_desc_cookie_ptr_get(desc_info); | |
2433 | if (err == 0) { | |
2434 | rocker_port->dev->stats.tx_packets++; | |
2435 | rocker_port->dev->stats.tx_bytes += skb->len; | |
4725ceb9 | 2436 | } else { |
f2bbca51 | 2437 | rocker_port->dev->stats.tx_errors++; |
4725ceb9 | 2438 | } |
f2bbca51 DA |
2439 | |
2440 | dev_kfree_skb_any(skb); | |
4b8ac966 JP |
2441 | credits++; |
2442 | } | |
2443 | ||
2444 | if (credits && netif_queue_stopped(rocker_port->dev)) | |
2445 | netif_wake_queue(rocker_port->dev); | |
2446 | ||
2447 | napi_complete(napi); | |
2448 | rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits); | |
2449 | ||
2450 | return 0; | |
2451 | } | |
2452 | ||
e5054643 SH |
2453 | static int rocker_port_rx_proc(const struct rocker *rocker, |
2454 | const struct rocker_port *rocker_port, | |
4b8ac966 JP |
2455 | struct rocker_desc_info *desc_info) |
2456 | { | |
e5054643 | 2457 | const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; |
4b8ac966 JP |
2458 | struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); |
2459 | size_t rx_len; | |
3f98a8e6 | 2460 | u16 rx_flags = 0; |
4b8ac966 JP |
2461 | |
2462 | if (!skb) | |
2463 | return -ENOENT; | |
2464 | ||
2465 | rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); | |
2466 | if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) | |
2467 | return -EINVAL; | |
3f98a8e6 SF |
2468 | if (attrs[ROCKER_TLV_RX_FLAGS]) |
2469 | rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]); | |
4b8ac966 JP |
2470 | |
2471 | rocker_dma_rx_ring_skb_unmap(rocker, attrs); | |
2472 | ||
2473 | rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]); | |
2474 | skb_put(skb, rx_len); | |
2475 | skb->protocol = eth_type_trans(skb, rocker_port->dev); | |
f2bbca51 | 2476 | |
3f98a8e6 | 2477 | if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD) |
6bc506b4 | 2478 | skb->offload_fwd_mark = 1; |
3f98a8e6 | 2479 | |
f2bbca51 DA |
2480 | rocker_port->dev->stats.rx_packets++; |
2481 | rocker_port->dev->stats.rx_bytes += skb->len; | |
2482 | ||
4b8ac966 JP |
2483 | netif_receive_skb(skb); |
2484 | ||
534ba6a8 | 2485 | return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info); |
4b8ac966 JP |
2486 | } |
2487 | ||
2488 | static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi) | |
2489 | { | |
2490 | return container_of(napi, struct rocker_port, napi_rx); | |
2491 | } | |
2492 | ||
2493 | static int rocker_port_poll_rx(struct napi_struct *napi, int budget) | |
2494 | { | |
2495 | struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi); | |
e5054643 | 2496 | const struct rocker *rocker = rocker_port->rocker; |
4b8ac966 JP |
2497 | struct rocker_desc_info *desc_info; |
2498 | u32 credits = 0; | |
2499 | int err; | |
2500 | ||
2501 | /* Process rx descriptors */ | |
2502 | while (credits < budget && | |
2503 | (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) { | |
2504 | err = rocker_desc_err(desc_info); | |
2505 | if (err) { | |
2506 | if (net_ratelimit()) | |
2507 | netdev_err(rocker_port->dev, "rx desc received with err %d\n", | |
2508 | err); | |
2509 | } else { | |
2510 | err = rocker_port_rx_proc(rocker, rocker_port, | |
2511 | desc_info); | |
2512 | if (err && net_ratelimit()) | |
2513 | netdev_err(rocker_port->dev, "rx processing failed with err %d\n", | |
2514 | err); | |
2515 | } | |
f2bbca51 DA |
2516 | if (err) |
2517 | rocker_port->dev->stats.rx_errors++; | |
2518 | ||
4b8ac966 JP |
2519 | rocker_desc_gen_clear(desc_info); |
2520 | rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info); | |
2521 | credits++; | |
2522 | } | |
2523 | ||
2524 | if (credits < budget) | |
6ad20165 | 2525 | napi_complete_done(napi, credits); |
4b8ac966 JP |
2526 | |
2527 | rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits); | |
2528 | ||
2529 | return credits; | |
2530 | } | |
2531 | ||
2532 | /***************** | |
2533 | * PCI driver ops | |
2534 | *****************/ | |
2535 | ||
e5054643 | 2536 | static void rocker_carrier_init(const struct rocker_port *rocker_port) |
4b8ac966 | 2537 | { |
e5054643 | 2538 | const struct rocker *rocker = rocker_port->rocker; |
4b8ac966 JP |
2539 | u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); |
2540 | bool link_up; | |
2541 | ||
4a6bb6d3 | 2542 | link_up = link_status & (1 << rocker_port->pport); |
4b8ac966 JP |
2543 | if (link_up) |
2544 | netif_carrier_on(rocker_port->dev); | |
2545 | else | |
2546 | netif_carrier_off(rocker_port->dev); | |
2547 | } | |
2548 | ||
e420114e | 2549 | static void rocker_remove_ports(struct rocker *rocker) |
4b8ac966 | 2550 | { |
9f6bbf7c | 2551 | struct rocker_port *rocker_port; |
4b8ac966 JP |
2552 | int i; |
2553 | ||
9f6bbf7c SF |
2554 | for (i = 0; i < rocker->port_count; i++) { |
2555 | rocker_port = rocker->ports[i]; | |
a0720310 SF |
2556 | if (!rocker_port) |
2557 | continue; | |
e420114e | 2558 | rocker_world_port_fini(rocker_port); |
9f6bbf7c | 2559 | unregister_netdev(rocker_port->dev); |
e420114e | 2560 | rocker_world_port_post_fini(rocker_port); |
1ebd47ef | 2561 | free_netdev(rocker_port->dev); |
9f6bbf7c | 2562 | } |
e420114e | 2563 | rocker_world_fini(rocker); |
4b8ac966 JP |
2564 | kfree(rocker->ports); |
2565 | } | |
2566 | ||
534ba6a8 | 2567 | static void rocker_port_dev_addr_init(struct rocker_port *rocker_port) |
4b8ac966 | 2568 | { |
534ba6a8 | 2569 | const struct rocker *rocker = rocker_port->rocker; |
e5054643 | 2570 | const struct pci_dev *pdev = rocker->pdev; |
4b8ac966 JP |
2571 | int err; |
2572 | ||
2573 | err = rocker_cmd_get_port_settings_macaddr(rocker_port, | |
2574 | rocker_port->dev->dev_addr); | |
2575 | if (err) { | |
2576 | dev_warn(&pdev->dev, "failed to get mac address, using random\n"); | |
2577 | eth_hw_addr_random(rocker_port->dev); | |
2578 | } | |
2579 | } | |
2580 | ||
44770e11 JW |
2581 | #define ROCKER_PORT_MIN_MTU ETH_MIN_MTU |
2582 | #define ROCKER_PORT_MAX_MTU 9000 | |
4b8ac966 JP |
2583 | static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) |
2584 | { | |
97699056 | 2585 | struct pci_dev *pdev = rocker->pdev; |
4b8ac966 JP |
2586 | struct rocker_port *rocker_port; |
2587 | struct net_device *dev; | |
2588 | int err; | |
2589 | ||
2590 | dev = alloc_etherdev(sizeof(struct rocker_port)); | |
2591 | if (!dev) | |
2592 | return -ENOMEM; | |
97699056 | 2593 | SET_NETDEV_DEV(dev, &pdev->dev); |
4b8ac966 JP |
2594 | rocker_port = netdev_priv(dev); |
2595 | rocker_port->dev = dev; | |
2596 | rocker_port->rocker = rocker; | |
2597 | rocker_port->port_number = port_number; | |
4a6bb6d3 | 2598 | rocker_port->pport = port_number + 1; |
4b8ac966 | 2599 | |
e420114e JP |
2600 | err = rocker_world_check_init(rocker_port); |
2601 | if (err) { | |
2602 | dev_err(&pdev->dev, "world init failed\n"); | |
2603 | goto err_world_check_init; | |
2604 | } | |
2605 | ||
534ba6a8 | 2606 | rocker_port_dev_addr_init(rocker_port); |
4b8ac966 JP |
2607 | dev->netdev_ops = &rocker_port_netdev_ops; |
2608 | dev->ethtool_ops = &rocker_port_ethtool_ops; | |
d64b5e85 | 2609 | netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx, |
11ce2ba3 | 2610 | NAPI_POLL_WEIGHT); |
4b8ac966 JP |
2611 | netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx, |
2612 | NAPI_POLL_WEIGHT); | |
2613 | rocker_carrier_init(rocker_port); | |
2614 | ||
21518a6e | 2615 | dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG; |
4b8ac966 | 2616 | |
44770e11 JW |
2617 | /* MTU range: 68 - 9000 */ |
2618 | dev->min_mtu = ROCKER_PORT_MIN_MTU; | |
2619 | dev->max_mtu = ROCKER_PORT_MAX_MTU; | |
2620 | ||
e420114e JP |
2621 | err = rocker_world_port_pre_init(rocker_port); |
2622 | if (err) { | |
2623 | dev_err(&pdev->dev, "port world pre-init failed\n"); | |
2624 | goto err_world_port_pre_init; | |
2625 | } | |
4b8ac966 JP |
2626 | err = register_netdev(dev); |
2627 | if (err) { | |
2628 | dev_err(&pdev->dev, "register_netdev failed\n"); | |
2629 | goto err_register_netdev; | |
2630 | } | |
2631 | rocker->ports[port_number] = rocker_port; | |
2632 | ||
e420114e JP |
2633 | err = rocker_world_port_init(rocker_port); |
2634 | if (err) { | |
2635 | dev_err(&pdev->dev, "port world init failed\n"); | |
2636 | goto err_world_port_init; | |
2637 | } | |
2638 | ||
4b8ac966 JP |
2639 | return 0; |
2640 | ||
e420114e | 2641 | err_world_port_init: |
6c4f7780 | 2642 | rocker->ports[port_number] = NULL; |
9f6bbf7c | 2643 | unregister_netdev(dev); |
4b8ac966 | 2644 | err_register_netdev: |
e420114e JP |
2645 | rocker_world_port_post_fini(rocker_port); |
2646 | err_world_port_pre_init: | |
2647 | err_world_check_init: | |
4b8ac966 JP |
2648 | free_netdev(dev); |
2649 | return err; | |
2650 | } | |
2651 | ||
2652 | static int rocker_probe_ports(struct rocker *rocker) | |
2653 | { | |
2654 | int i; | |
2655 | size_t alloc_size; | |
2656 | int err; | |
2657 | ||
2658 | alloc_size = sizeof(struct rocker_port *) * rocker->port_count; | |
27b808cb | 2659 | rocker->ports = kzalloc(alloc_size, GFP_KERNEL); |
e65ad3be DC |
2660 | if (!rocker->ports) |
2661 | return -ENOMEM; | |
4b8ac966 JP |
2662 | for (i = 0; i < rocker->port_count; i++) { |
2663 | err = rocker_probe_port(rocker, i); | |
2664 | if (err) | |
2665 | goto remove_ports; | |
2666 | } | |
2667 | return 0; | |
2668 | ||
2669 | remove_ports: | |
2670 | rocker_remove_ports(rocker); | |
2671 | return err; | |
2672 | } | |
2673 | ||
2674 | static int rocker_msix_init(struct rocker *rocker) | |
2675 | { | |
2676 | struct pci_dev *pdev = rocker->pdev; | |
2677 | int msix_entries; | |
2678 | int i; | |
2679 | int err; | |
2680 | ||
2681 | msix_entries = pci_msix_vec_count(pdev); | |
2682 | if (msix_entries < 0) | |
2683 | return msix_entries; | |
2684 | ||
2685 | if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count)) | |
2686 | return -EINVAL; | |
2687 | ||
2688 | rocker->msix_entries = kmalloc_array(msix_entries, | |
2689 | sizeof(struct msix_entry), | |
2690 | GFP_KERNEL); | |
2691 | if (!rocker->msix_entries) | |
2692 | return -ENOMEM; | |
2693 | ||
2694 | for (i = 0; i < msix_entries; i++) | |
2695 | rocker->msix_entries[i].entry = i; | |
2696 | ||
2697 | err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries); | |
2698 | if (err < 0) | |
2699 | goto err_enable_msix; | |
2700 | ||
2701 | return 0; | |
2702 | ||
2703 | err_enable_msix: | |
2704 | kfree(rocker->msix_entries); | |
2705 | return err; | |
2706 | } | |
2707 | ||
e5054643 | 2708 | static void rocker_msix_fini(const struct rocker *rocker) |
4b8ac966 JP |
2709 | { |
2710 | pci_disable_msix(rocker->pdev); | |
2711 | kfree(rocker->msix_entries); | |
2712 | } | |
2713 | ||
726fd42f AS |
2714 | static bool rocker_port_dev_check(const struct net_device *dev) |
2715 | { | |
2716 | return dev->netdev_ops == &rocker_port_netdev_ops; | |
2717 | } | |
2718 | ||
4f705486 FF |
2719 | static int |
2720 | rocker_switchdev_port_attr_set_event(struct net_device *netdev, | |
2721 | struct switchdev_notifier_port_attr_info *port_attr_info) | |
2722 | { | |
2723 | int err; | |
2724 | ||
2725 | err = rocker_port_attr_set(netdev, port_attr_info->attr, | |
2726 | port_attr_info->trans); | |
2727 | ||
2728 | port_attr_info->handled = true; | |
2729 | return notifier_from_errno(err); | |
2730 | } | |
2731 | ||
726fd42f AS |
2732 | struct rocker_switchdev_event_work { |
2733 | struct work_struct work; | |
2734 | struct switchdev_notifier_fdb_info fdb_info; | |
2735 | struct rocker_port *rocker_port; | |
2736 | unsigned long event; | |
2737 | }; | |
2738 | ||
2739 | static void | |
2740 | rocker_fdb_offload_notify(struct rocker_port *rocker_port, | |
2741 | struct switchdev_notifier_fdb_info *recv_info) | |
2742 | { | |
2743 | struct switchdev_notifier_fdb_info info; | |
2744 | ||
2745 | info.addr = recv_info->addr; | |
2746 | info.vid = recv_info->vid; | |
e9ba0fbc | 2747 | info.offloaded = true; |
726fd42f | 2748 | call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, |
6685987c | 2749 | rocker_port->dev, &info.info, NULL); |
726fd42f AS |
2750 | } |
2751 | ||
2752 | static void rocker_switchdev_event_work(struct work_struct *work) | |
2753 | { | |
2754 | struct rocker_switchdev_event_work *switchdev_work = | |
2755 | container_of(work, struct rocker_switchdev_event_work, work); | |
2756 | struct rocker_port *rocker_port = switchdev_work->rocker_port; | |
2757 | struct switchdev_notifier_fdb_info *fdb_info; | |
2758 | int err; | |
2759 | ||
2760 | rtnl_lock(); | |
2761 | switch (switchdev_work->event) { | |
2762 | case SWITCHDEV_FDB_ADD_TO_DEVICE: | |
2763 | fdb_info = &switchdev_work->fdb_info; | |
ec9efb52 PM |
2764 | if (!fdb_info->added_by_user) |
2765 | break; | |
726fd42f AS |
2766 | err = rocker_world_port_fdb_add(rocker_port, fdb_info); |
2767 | if (err) { | |
2768 | netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err); | |
2769 | break; | |
2770 | } | |
2771 | rocker_fdb_offload_notify(rocker_port, fdb_info); | |
2772 | break; | |
2773 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
2774 | fdb_info = &switchdev_work->fdb_info; | |
ec9efb52 PM |
2775 | if (!fdb_info->added_by_user) |
2776 | break; | |
726fd42f AS |
2777 | err = rocker_world_port_fdb_del(rocker_port, fdb_info); |
2778 | if (err) | |
2779 | netdev_dbg(rocker_port->dev, "fdb add failed err=%d\n", err); | |
2780 | break; | |
2781 | } | |
2782 | rtnl_unlock(); | |
2783 | ||
2784 | kfree(switchdev_work->fdb_info.addr); | |
2785 | kfree(switchdev_work); | |
2786 | dev_put(rocker_port->dev); | |
2787 | } | |
2788 | ||
2789 | /* called under rcu_read_lock() */ | |
2790 | static int rocker_switchdev_event(struct notifier_block *unused, | |
2791 | unsigned long event, void *ptr) | |
2792 | { | |
2793 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
2794 | struct rocker_switchdev_event_work *switchdev_work; | |
2795 | struct switchdev_notifier_fdb_info *fdb_info = ptr; | |
2796 | struct rocker_port *rocker_port; | |
2797 | ||
2798 | if (!rocker_port_dev_check(dev)) | |
2799 | return NOTIFY_DONE; | |
2800 | ||
4f705486 FF |
2801 | if (event == SWITCHDEV_PORT_ATTR_SET) |
2802 | return rocker_switchdev_port_attr_set_event(dev, ptr); | |
2803 | ||
726fd42f AS |
2804 | rocker_port = netdev_priv(dev); |
2805 | switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); | |
2806 | if (WARN_ON(!switchdev_work)) | |
2807 | return NOTIFY_BAD; | |
2808 | ||
2809 | INIT_WORK(&switchdev_work->work, rocker_switchdev_event_work); | |
2810 | switchdev_work->rocker_port = rocker_port; | |
2811 | switchdev_work->event = event; | |
2812 | ||
2813 | switch (event) { | |
df561f66 | 2814 | case SWITCHDEV_FDB_ADD_TO_DEVICE: |
726fd42f AS |
2815 | case SWITCHDEV_FDB_DEL_TO_DEVICE: |
2816 | memcpy(&switchdev_work->fdb_info, ptr, | |
2817 | sizeof(switchdev_work->fdb_info)); | |
2818 | switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); | |
5c149314 KL |
2819 | if (unlikely(!switchdev_work->fdb_info.addr)) { |
2820 | kfree(switchdev_work); | |
2821 | return NOTIFY_BAD; | |
2822 | } | |
2823 | ||
726fd42f AS |
2824 | ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, |
2825 | fdb_info->addr); | |
2826 | /* Take a reference on the rocker device */ | |
2827 | dev_hold(dev); | |
2828 | break; | |
2829 | default: | |
2830 | kfree(switchdev_work); | |
2831 | return NOTIFY_DONE; | |
2832 | } | |
2833 | ||
2834 | queue_work(rocker_port->rocker->rocker_owq, | |
2835 | &switchdev_work->work); | |
2836 | return NOTIFY_DONE; | |
2837 | } | |
2838 | ||
c6fa35b2 PM |
2839 | static int |
2840 | rocker_switchdev_port_obj_event(unsigned long event, struct net_device *netdev, | |
2841 | struct switchdev_notifier_port_obj_info *port_obj_info) | |
2842 | { | |
2843 | int err = -EOPNOTSUPP; | |
2844 | ||
2845 | switch (event) { | |
2846 | case SWITCHDEV_PORT_OBJ_ADD: | |
2847 | err = rocker_port_obj_add(netdev, port_obj_info->obj, | |
2848 | port_obj_info->trans); | |
2849 | break; | |
2850 | case SWITCHDEV_PORT_OBJ_DEL: | |
2851 | err = rocker_port_obj_del(netdev, port_obj_info->obj); | |
2852 | break; | |
2853 | } | |
2854 | ||
2855 | port_obj_info->handled = true; | |
2856 | return notifier_from_errno(err); | |
2857 | } | |
2858 | ||
2859 | static int rocker_switchdev_blocking_event(struct notifier_block *unused, | |
2860 | unsigned long event, void *ptr) | |
2861 | { | |
2862 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
2863 | ||
2864 | if (!rocker_port_dev_check(dev)) | |
2865 | return NOTIFY_DONE; | |
2866 | ||
2867 | switch (event) { | |
2868 | case SWITCHDEV_PORT_OBJ_ADD: | |
2869 | case SWITCHDEV_PORT_OBJ_DEL: | |
2870 | return rocker_switchdev_port_obj_event(event, dev, ptr); | |
4f705486 FF |
2871 | case SWITCHDEV_PORT_ATTR_SET: |
2872 | return rocker_switchdev_port_attr_set_event(dev, ptr); | |
c6fa35b2 PM |
2873 | } |
2874 | ||
2875 | return NOTIFY_DONE; | |
2876 | } | |
2877 | ||
726fd42f AS |
2878 | static struct notifier_block rocker_switchdev_notifier = { |
2879 | .notifier_call = rocker_switchdev_event, | |
2880 | }; | |
2881 | ||
c6fa35b2 PM |
2882 | static struct notifier_block rocker_switchdev_blocking_notifier = { |
2883 | .notifier_call = rocker_switchdev_blocking_event, | |
2884 | }; | |
2885 | ||
4b8ac966 JP |
2886 | static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
2887 | { | |
c6fa35b2 | 2888 | struct notifier_block *nb; |
4b8ac966 JP |
2889 | struct rocker *rocker; |
2890 | int err; | |
2891 | ||
2892 | rocker = kzalloc(sizeof(*rocker), GFP_KERNEL); | |
2893 | if (!rocker) | |
2894 | return -ENOMEM; | |
2895 | ||
2896 | err = pci_enable_device(pdev); | |
2897 | if (err) { | |
2898 | dev_err(&pdev->dev, "pci_enable_device failed\n"); | |
2899 | goto err_pci_enable_device; | |
2900 | } | |
2901 | ||
2902 | err = pci_request_regions(pdev, rocker_driver_name); | |
2903 | if (err) { | |
2904 | dev_err(&pdev->dev, "pci_request_regions failed\n"); | |
2905 | goto err_pci_request_regions; | |
2906 | } | |
2907 | ||
2908 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); | |
2909 | if (!err) { | |
2910 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
2911 | if (err) { | |
2912 | dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n"); | |
2913 | goto err_pci_set_dma_mask; | |
2914 | } | |
2915 | } else { | |
2916 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
2917 | if (err) { | |
2918 | dev_err(&pdev->dev, "pci_set_dma_mask failed\n"); | |
2919 | goto err_pci_set_dma_mask; | |
2920 | } | |
2921 | } | |
2922 | ||
2923 | if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) { | |
2924 | dev_err(&pdev->dev, "invalid PCI region size\n"); | |
3122a92e | 2925 | err = -EINVAL; |
4b8ac966 JP |
2926 | goto err_pci_resource_len_check; |
2927 | } | |
2928 | ||
2929 | rocker->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2930 | pci_resource_len(pdev, 0)); | |
2931 | if (!rocker->hw_addr) { | |
2932 | dev_err(&pdev->dev, "ioremap failed\n"); | |
2933 | err = -EIO; | |
2934 | goto err_ioremap; | |
2935 | } | |
2936 | pci_set_master(pdev); | |
2937 | ||
2938 | rocker->pdev = pdev; | |
2939 | pci_set_drvdata(pdev, rocker); | |
2940 | ||
2941 | rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT); | |
2942 | ||
2943 | err = rocker_msix_init(rocker); | |
2944 | if (err) { | |
2945 | dev_err(&pdev->dev, "MSI-X init failed\n"); | |
2946 | goto err_msix_init; | |
2947 | } | |
2948 | ||
2949 | err = rocker_basic_hw_test(rocker); | |
2950 | if (err) { | |
2951 | dev_err(&pdev->dev, "basic hw test failed\n"); | |
2952 | goto err_basic_hw_test; | |
2953 | } | |
2954 | ||
2955 | rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); | |
2956 | ||
2957 | err = rocker_dma_rings_init(rocker); | |
2958 | if (err) | |
2959 | goto err_dma_rings_init; | |
2960 | ||
2961 | err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), | |
2962 | rocker_cmd_irq_handler, 0, | |
2963 | rocker_driver_name, rocker); | |
2964 | if (err) { | |
2965 | dev_err(&pdev->dev, "cannot assign cmd irq\n"); | |
2966 | goto err_request_cmd_irq; | |
2967 | } | |
2968 | ||
2969 | err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), | |
2970 | rocker_event_irq_handler, 0, | |
2971 | rocker_driver_name, rocker); | |
2972 | if (err) { | |
2973 | dev_err(&pdev->dev, "cannot assign event irq\n"); | |
2974 | goto err_request_event_irq; | |
2975 | } | |
2976 | ||
c1bb279c IS |
2977 | rocker->rocker_owq = alloc_ordered_workqueue(rocker_driver_name, |
2978 | WQ_MEM_RECLAIM); | |
2979 | if (!rocker->rocker_owq) { | |
2980 | err = -ENOMEM; | |
2981 | goto err_alloc_ordered_workqueue; | |
2982 | } | |
2983 | ||
a83165f0 JP |
2984 | err = rocker_probe_ports(rocker); |
2985 | if (err) { | |
2986 | dev_err(&pdev->dev, "failed to probe ports\n"); | |
2987 | goto err_probe_ports; | |
2988 | } | |
2989 | ||
c3852ef7 IS |
2990 | /* Only FIBs pointing to our own netdevs are programmed into |
2991 | * the device, so no need to pass a callback. | |
2992 | */ | |
17f8be7d | 2993 | rocker->fib_nb.notifier_call = rocker_router_fib_event; |
b7a59557 | 2994 | err = register_fib_notifier(&init_net, &rocker->fib_nb, NULL, NULL); |
c3852ef7 IS |
2995 | if (err) |
2996 | goto err_register_fib_notifier; | |
17f8be7d | 2997 | |
726fd42f AS |
2998 | err = register_switchdev_notifier(&rocker_switchdev_notifier); |
2999 | if (err) { | |
3000 | dev_err(&pdev->dev, "Failed to register switchdev notifier\n"); | |
3001 | goto err_register_switchdev_notifier; | |
3002 | } | |
3003 | ||
c6fa35b2 PM |
3004 | nb = &rocker_switchdev_blocking_notifier; |
3005 | err = register_switchdev_blocking_notifier(nb); | |
3006 | if (err) { | |
3007 | dev_err(&pdev->dev, "Failed to register switchdev blocking notifier\n"); | |
3008 | goto err_register_switchdev_blocking_notifier; | |
3009 | } | |
3010 | ||
4b8ac966 JP |
3011 | rocker->hw.id = rocker_read64(rocker, SWITCH_ID); |
3012 | ||
c8beb5b2 SF |
3013 | dev_info(&pdev->dev, "Rocker switch with id %*phN\n", |
3014 | (int)sizeof(rocker->hw.id), &rocker->hw.id); | |
4b8ac966 JP |
3015 | |
3016 | return 0; | |
3017 | ||
c6fa35b2 PM |
3018 | err_register_switchdev_blocking_notifier: |
3019 | unregister_switchdev_notifier(&rocker_switchdev_notifier); | |
726fd42f | 3020 | err_register_switchdev_notifier: |
7c550daf | 3021 | unregister_fib_notifier(&init_net, &rocker->fib_nb); |
c3852ef7 | 3022 | err_register_fib_notifier: |
a83165f0 JP |
3023 | rocker_remove_ports(rocker); |
3024 | err_probe_ports: | |
c1bb279c IS |
3025 | destroy_workqueue(rocker->rocker_owq); |
3026 | err_alloc_ordered_workqueue: | |
4b8ac966 JP |
3027 | free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); |
3028 | err_request_event_irq: | |
3029 | free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); | |
3030 | err_request_cmd_irq: | |
3031 | rocker_dma_rings_fini(rocker); | |
3032 | err_dma_rings_init: | |
3033 | err_basic_hw_test: | |
3034 | rocker_msix_fini(rocker); | |
3035 | err_msix_init: | |
3036 | iounmap(rocker->hw_addr); | |
3037 | err_ioremap: | |
3038 | err_pci_resource_len_check: | |
3039 | err_pci_set_dma_mask: | |
3040 | pci_release_regions(pdev); | |
3041 | err_pci_request_regions: | |
3042 | pci_disable_device(pdev); | |
3043 | err_pci_enable_device: | |
3044 | kfree(rocker); | |
3045 | return err; | |
3046 | } | |
3047 | ||
3048 | static void rocker_remove(struct pci_dev *pdev) | |
3049 | { | |
3050 | struct rocker *rocker = pci_get_drvdata(pdev); | |
c6fa35b2 PM |
3051 | struct notifier_block *nb; |
3052 | ||
3053 | nb = &rocker_switchdev_blocking_notifier; | |
3054 | unregister_switchdev_blocking_notifier(nb); | |
4b8ac966 | 3055 | |
726fd42f | 3056 | unregister_switchdev_notifier(&rocker_switchdev_notifier); |
7c550daf | 3057 | unregister_fib_notifier(&init_net, &rocker->fib_nb); |
a83165f0 | 3058 | rocker_remove_ports(rocker); |
4b8ac966 | 3059 | rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); |
c1bb279c | 3060 | destroy_workqueue(rocker->rocker_owq); |
4b8ac966 JP |
3061 | free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); |
3062 | free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); | |
3063 | rocker_dma_rings_fini(rocker); | |
3064 | rocker_msix_fini(rocker); | |
3065 | iounmap(rocker->hw_addr); | |
3066 | pci_release_regions(rocker->pdev); | |
3067 | pci_disable_device(rocker->pdev); | |
3068 | kfree(rocker); | |
3069 | } | |
3070 | ||
3071 | static struct pci_driver rocker_pci_driver = { | |
3072 | .name = rocker_driver_name, | |
3073 | .id_table = rocker_pci_id_table, | |
3074 | .probe = rocker_probe, | |
3075 | .remove = rocker_remove, | |
3076 | }; | |
3077 | ||
6c707945 SF |
3078 | /************************************ |
3079 | * Net device notifier event handler | |
3080 | ************************************/ | |
3081 | ||
936bd486 JP |
3082 | static bool rocker_port_dev_check_under(const struct net_device *dev, |
3083 | struct rocker *rocker) | |
3084 | { | |
3085 | struct rocker_port *rocker_port; | |
3086 | ||
3087 | if (!rocker_port_dev_check(dev)) | |
3088 | return false; | |
3089 | ||
3090 | rocker_port = netdev_priv(dev); | |
3091 | if (rocker_port->rocker != rocker) | |
3092 | return false; | |
3093 | ||
3094 | return true; | |
3095 | } | |
3096 | ||
cf2d6740 DA |
3097 | struct rocker_walk_data { |
3098 | struct rocker *rocker; | |
3099 | struct rocker_port *port; | |
3100 | }; | |
3101 | ||
3102 | static int rocker_lower_dev_walk(struct net_device *lower_dev, void *_data) | |
3103 | { | |
3104 | struct rocker_walk_data *data = _data; | |
3105 | int ret = 0; | |
3106 | ||
3107 | if (rocker_port_dev_check_under(lower_dev, data->rocker)) { | |
3108 | data->port = netdev_priv(lower_dev); | |
3109 | ret = 1; | |
3110 | } | |
3111 | ||
3112 | return ret; | |
3113 | } | |
3114 | ||
936bd486 JP |
3115 | struct rocker_port *rocker_port_dev_lower_find(struct net_device *dev, |
3116 | struct rocker *rocker) | |
3117 | { | |
cf2d6740 | 3118 | struct rocker_walk_data data; |
936bd486 JP |
3119 | |
3120 | if (rocker_port_dev_check_under(dev, rocker)) | |
3121 | return netdev_priv(dev); | |
3122 | ||
cf2d6740 DA |
3123 | data.rocker = rocker; |
3124 | data.port = NULL; | |
3125 | netdev_walk_all_lower_dev(dev, rocker_lower_dev_walk, &data); | |
3126 | ||
3127 | return data.port; | |
936bd486 JP |
3128 | } |
3129 | ||
6c707945 SF |
3130 | static int rocker_netdevice_event(struct notifier_block *unused, |
3131 | unsigned long event, void *ptr) | |
3132 | { | |
686ed304 JP |
3133 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
3134 | struct netdev_notifier_changeupper_info *info; | |
3135 | struct rocker_port *rocker_port; | |
6c707945 SF |
3136 | int err; |
3137 | ||
686ed304 JP |
3138 | if (!rocker_port_dev_check(dev)) |
3139 | return NOTIFY_DONE; | |
3140 | ||
6c707945 SF |
3141 | switch (event) { |
3142 | case NETDEV_CHANGEUPPER: | |
686ed304 JP |
3143 | info = ptr; |
3144 | if (!info->master) | |
3145 | goto out; | |
3146 | rocker_port = netdev_priv(dev); | |
3147 | if (info->linking) { | |
e420114e JP |
3148 | err = rocker_world_port_master_linked(rocker_port, |
3149 | info->upper_dev); | |
3150 | if (err) | |
3151 | netdev_warn(dev, "failed to reflect master linked (err %d)\n", | |
3152 | err); | |
686ed304 | 3153 | } else { |
e420114e JP |
3154 | err = rocker_world_port_master_unlinked(rocker_port, |
3155 | info->upper_dev); | |
3156 | if (err) | |
3157 | netdev_warn(dev, "failed to reflect master unlinked (err %d)\n", | |
3158 | err); | |
686ed304 | 3159 | } |
6c707945 | 3160 | } |
686ed304 | 3161 | out: |
6c707945 SF |
3162 | return NOTIFY_DONE; |
3163 | } | |
3164 | ||
3165 | static struct notifier_block rocker_netdevice_nb __read_mostly = { | |
3166 | .notifier_call = rocker_netdevice_event, | |
3167 | }; | |
3168 | ||
c1beeef7 SF |
3169 | /************************************ |
3170 | * Net event notifier event handler | |
3171 | ************************************/ | |
3172 | ||
c1beeef7 SF |
3173 | static int rocker_netevent_event(struct notifier_block *unused, |
3174 | unsigned long event, void *ptr) | |
3175 | { | |
e420114e | 3176 | struct rocker_port *rocker_port; |
c1beeef7 SF |
3177 | struct net_device *dev; |
3178 | struct neighbour *n = ptr; | |
3179 | int err; | |
3180 | ||
3181 | switch (event) { | |
3182 | case NETEVENT_NEIGH_UPDATE: | |
3183 | if (n->tbl != &arp_tbl) | |
3184 | return NOTIFY_DONE; | |
3185 | dev = n->dev; | |
3186 | if (!rocker_port_dev_check(dev)) | |
3187 | return NOTIFY_DONE; | |
e420114e JP |
3188 | rocker_port = netdev_priv(dev); |
3189 | err = rocker_world_port_neigh_update(rocker_port, n); | |
3190 | if (err) | |
3191 | netdev_warn(dev, "failed to handle neigh update (err %d)\n", | |
3192 | err); | |
c1beeef7 SF |
3193 | break; |
3194 | } | |
3195 | ||
3196 | return NOTIFY_DONE; | |
3197 | } | |
3198 | ||
3199 | static struct notifier_block rocker_netevent_nb __read_mostly = { | |
3200 | .notifier_call = rocker_netevent_event, | |
3201 | }; | |
3202 | ||
4b8ac966 JP |
3203 | /*********************** |
3204 | * Module init and exit | |
3205 | ***********************/ | |
3206 | ||
3207 | static int __init rocker_module_init(void) | |
3208 | { | |
6c707945 SF |
3209 | int err; |
3210 | ||
3211 | register_netdevice_notifier(&rocker_netdevice_nb); | |
c1beeef7 | 3212 | register_netevent_notifier(&rocker_netevent_nb); |
6c707945 SF |
3213 | err = pci_register_driver(&rocker_pci_driver); |
3214 | if (err) | |
3215 | goto err_pci_register_driver; | |
3216 | return 0; | |
3217 | ||
3218 | err_pci_register_driver: | |
a076e6bf | 3219 | unregister_netevent_notifier(&rocker_netevent_nb); |
6c707945 SF |
3220 | unregister_netdevice_notifier(&rocker_netdevice_nb); |
3221 | return err; | |
4b8ac966 JP |
3222 | } |
3223 | ||
3224 | static void __exit rocker_module_exit(void) | |
3225 | { | |
c1beeef7 | 3226 | unregister_netevent_notifier(&rocker_netevent_nb); |
6c707945 | 3227 | unregister_netdevice_notifier(&rocker_netdevice_nb); |
4b8ac966 JP |
3228 | pci_unregister_driver(&rocker_pci_driver); |
3229 | } | |
3230 | ||
3231 | module_init(rocker_module_init); | |
3232 | module_exit(rocker_module_exit); | |
3233 | ||
3234 | MODULE_LICENSE("GPL v2"); | |
3235 | MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); | |
3236 | MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>"); | |
3237 | MODULE_DESCRIPTION("Rocker switch device driver"); | |
3238 | MODULE_DEVICE_TABLE(pci, rocker_pci_id_table); |