1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * PS3 gelic network driver. |
4 | * |
5 | * Copyright (C) 2007 Sony Computer Entertainment Inc. |
6 | * Copyright 2006, 2007 Sony Corporation |
7 | * |
8 | * This file is based on: spider_net.c |
9 | * |
10 | * (C) Copyright IBM Corp. 2005 |
11 | * |
12 | * Authors : Utz Bacher <utz.bacher@de.ibm.com> |
13 | * Jens Osterkamp <Jens.Osterkamp@de.ibm.com> |
14 | */ |
15 | |
16 | #undef DEBUG |
17 | |
18 | #include <linux/interrupt.h> |
19 | #include <linux/kernel.h> |
20 | #include <linux/module.h> |
21 | #include <linux/slab.h> |
22 | |
23 | #include <linux/etherdevice.h> |
24 | #include <linux/ethtool.h> |
25 | #include <linux/if_vlan.h> |
26 | |
27 | #include <linux/in.h> |
28 | #include <linux/ip.h> |
29 | #include <linux/tcp.h> |
30 | |
31 | #include <linux/dma-mapping.h> |
32 | #include <net/checksum.h> |
33 | #include <asm/firmware.h> |
34 | #include <asm/ps3.h> |
35 | #include <asm/lv1call.h> |
36 | |
37 | #include "ps3_gelic_net.h" |
38 | #include "ps3_gelic_wireless.h" |
39 | |
40 | #define DRV_NAME "Gelic Network Driver" |
41 | #define DRV_VERSION "2.0" |
42 | |
43 | MODULE_AUTHOR("SCE Inc." ); |
44 | MODULE_DESCRIPTION("Gelic Network driver" ); |
45 | MODULE_LICENSE("GPL" ); |
46 | |
47 | |
48 | /* set irq_mask */ |
49 | int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask) |
50 | { |
51 | int status; |
52 | |
53 | status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card), |
54 | mask, 0); |
55 | if (status) |
56 | dev_info(ctodev(card), |
57 | "%s failed %d\n" , __func__, status); |
58 | return status; |
59 | } |
60 | |
61 | static void gelic_card_rx_irq_on(struct gelic_card *card) |
62 | { |
63 | card->irq_mask |= GELIC_CARD_RXINT; |
64 | gelic_card_set_irq_mask(card, mask: card->irq_mask); |
65 | } |
66 | static void gelic_card_rx_irq_off(struct gelic_card *card) |
67 | { |
68 | card->irq_mask &= ~GELIC_CARD_RXINT; |
69 | gelic_card_set_irq_mask(card, mask: card->irq_mask); |
70 | } |
71 | |
72 | static void gelic_card_get_ether_port_status(struct gelic_card *card, |
73 | int inform) |
74 | { |
75 | u64 v2; |
76 | struct net_device *ether_netdev; |
77 | |
78 | lv1_net_control(bus_id(card), dev_id(card), |
79 | GELIC_LV1_GET_ETH_PORT_STATUS, |
80 | GELIC_LV1_VLAN_TX_ETHERNET_0, 0, 0, |
81 | &card->ether_port_status, &v2); |
82 | |
83 | if (inform) { |
84 | ether_netdev = card->netdev[GELIC_PORT_ETHERNET_0]; |
85 | if (card->ether_port_status & GELIC_LV1_ETHER_LINK_UP) |
86 | netif_carrier_on(dev: ether_netdev); |
87 | else |
88 | netif_carrier_off(dev: ether_netdev); |
89 | } |
90 | } |
91 | |
92 | /** |
93 | * gelic_descr_get_status -- returns the status of a descriptor |
94 | * @descr: descriptor to look at |
95 | * |
96 | * returns the status as in the dmac_cmd_status field of the descriptor |
97 | */ |
98 | static enum gelic_descr_dma_status |
99 | gelic_descr_get_status(struct gelic_descr *descr) |
100 | { |
101 | return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK; |
102 | } |
103 | |
104 | static int gelic_card_set_link_mode(struct gelic_card *card, int mode) |
105 | { |
106 | int status; |
107 | u64 v1, v2; |
108 | |
109 | status = lv1_net_control(bus_id(card), dev_id(card), |
110 | GELIC_LV1_SET_NEGOTIATION_MODE, |
111 | GELIC_LV1_PHY_ETHERNET_0, mode, 0, &v1, &v2); |
112 | if (status) { |
113 | pr_info("%s: failed setting negotiation mode %d\n" , __func__, |
114 | status); |
115 | return -EBUSY; |
116 | } |
117 | |
118 | card->link_mode = mode; |
119 | return 0; |
120 | } |
121 | |
122 | /** |
123 | * gelic_card_disable_txdmac - disables the transmit DMA controller |
124 | * @card: card structure |
125 | * |
126 | * gelic_card_disable_txdmac terminates processing on the DMA controller by |
127 | * turing off DMA and issuing a force end |
128 | */ |
129 | static void gelic_card_disable_txdmac(struct gelic_card *card) |
130 | { |
131 | int status; |
132 | |
133 | /* this hvc blocks until the DMA in progress really stopped */ |
134 | status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card)); |
135 | if (status) |
136 | dev_err(ctodev(card), |
137 | "lv1_net_stop_tx_dma failed, status=%d\n" , status); |
138 | } |
139 | |
140 | /** |
141 | * gelic_card_enable_rxdmac - enables the receive DMA controller |
142 | * @card: card structure |
143 | * |
144 | * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN |
145 | * in the GDADMACCNTR register |
146 | */ |
147 | static void gelic_card_enable_rxdmac(struct gelic_card *card) |
148 | { |
149 | int status; |
150 | |
151 | #ifdef DEBUG |
152 | if (gelic_descr_get_status(card->rx_chain.head) != |
153 | GELIC_DESCR_DMA_CARDOWNED) { |
154 | printk(KERN_ERR "%s: status=%x\n" , __func__, |
155 | be32_to_cpu(card->rx_chain.head->dmac_cmd_status)); |
156 | printk(KERN_ERR "%s: nextphy=%x\n" , __func__, |
157 | be32_to_cpu(card->rx_chain.head->next_descr_addr)); |
158 | printk(KERN_ERR "%s: head=%p\n" , __func__, |
159 | card->rx_chain.head); |
160 | } |
161 | #endif |
162 | status = lv1_net_start_rx_dma(bus_id(card), dev_id(card), |
163 | card->rx_chain.head->bus_addr, 0); |
164 | if (status) |
165 | dev_info(ctodev(card), |
166 | "lv1_net_start_rx_dma failed, status=%d\n" , status); |
167 | } |
168 | |
169 | /** |
170 | * gelic_card_disable_rxdmac - disables the receive DMA controller |
171 | * @card: card structure |
172 | * |
173 | * gelic_card_disable_rxdmac terminates processing on the DMA controller by |
174 | * turing off DMA and issuing a force end |
175 | */ |
176 | static void gelic_card_disable_rxdmac(struct gelic_card *card) |
177 | { |
178 | int status; |
179 | |
180 | /* this hvc blocks until the DMA in progress really stopped */ |
181 | status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card)); |
182 | if (status) |
183 | dev_err(ctodev(card), |
184 | "lv1_net_stop_rx_dma failed, %d\n" , status); |
185 | } |
186 | |
187 | /** |
188 | * gelic_descr_set_status -- sets the status of a descriptor |
189 | * @descr: descriptor to change |
190 | * @status: status to set in the descriptor |
191 | * |
192 | * changes the status to the specified value. Doesn't change other bits |
193 | * in the status |
194 | */ |
195 | static void gelic_descr_set_status(struct gelic_descr *descr, |
196 | enum gelic_descr_dma_status status) |
197 | { |
198 | descr->dmac_cmd_status = cpu_to_be32(status | |
199 | (be32_to_cpu(descr->dmac_cmd_status) & |
200 | ~GELIC_DESCR_DMA_STAT_MASK)); |
201 | /* |
202 | * dma_cmd_status field is used to indicate whether the descriptor |
203 | * is valid or not. |
204 | * Usually caller of this function wants to inform that to the |
205 | * hardware, so we assure here the hardware sees the change. |
206 | */ |
207 | wmb(); |
208 | } |
209 | |
210 | /** |
211 | * gelic_card_reset_chain - reset status of a descriptor chain |
212 | * @card: card structure |
213 | * @chain: address of chain |
214 | * @start_descr: address of descriptor array |
215 | * |
216 | * Reset the status of dma descriptors to ready state |
217 | * and re-initialize the hardware chain for later use |
218 | */ |
219 | static void gelic_card_reset_chain(struct gelic_card *card, |
220 | struct gelic_descr_chain *chain, |
221 | struct gelic_descr *start_descr) |
222 | { |
223 | struct gelic_descr *descr; |
224 | |
225 | for (descr = start_descr; start_descr != descr->next; descr++) { |
226 | gelic_descr_set_status(descr, status: GELIC_DESCR_DMA_CARDOWNED); |
227 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); |
228 | } |
229 | |
230 | chain->head = start_descr; |
231 | chain->tail = (descr - 1); |
232 | |
233 | (descr - 1)->next_descr_addr = 0; |
234 | } |
235 | |
236 | void gelic_card_up(struct gelic_card *card) |
237 | { |
238 | pr_debug("%s: called\n" , __func__); |
239 | mutex_lock(&card->updown_lock); |
240 | if (atomic_inc_return(v: &card->users) == 1) { |
241 | pr_debug("%s: real do\n" , __func__); |
242 | /* enable irq */ |
243 | gelic_card_set_irq_mask(card, mask: card->irq_mask); |
244 | /* start rx */ |
245 | gelic_card_enable_rxdmac(card); |
246 | |
247 | napi_enable(n: &card->napi); |
248 | } |
249 | mutex_unlock(lock: &card->updown_lock); |
250 | pr_debug("%s: done\n" , __func__); |
251 | } |
252 | |
253 | void gelic_card_down(struct gelic_card *card) |
254 | { |
255 | u64 mask; |
256 | pr_debug("%s: called\n" , __func__); |
257 | mutex_lock(&card->updown_lock); |
258 | if (atomic_dec_if_positive(v: &card->users) == 0) { |
259 | pr_debug("%s: real do\n" , __func__); |
260 | napi_disable(n: &card->napi); |
261 | /* |
262 | * Disable irq. Wireless interrupts will |
263 | * be disabled later if any |
264 | */ |
265 | mask = card->irq_mask & (GELIC_CARD_WLAN_EVENT_RECEIVED | |
266 | GELIC_CARD_WLAN_COMMAND_COMPLETED); |
267 | gelic_card_set_irq_mask(card, mask); |
268 | /* stop rx */ |
269 | gelic_card_disable_rxdmac(card); |
270 | gelic_card_reset_chain(card, chain: &card->rx_chain, |
271 | start_descr: card->descr + GELIC_NET_TX_DESCRIPTORS); |
272 | /* stop tx */ |
273 | gelic_card_disable_txdmac(card); |
274 | } |
275 | mutex_unlock(lock: &card->updown_lock); |
276 | pr_debug("%s: done\n" , __func__); |
277 | } |
278 | |
279 | /** |
280 | * gelic_card_free_chain - free descriptor chain |
281 | * @card: card structure |
282 | * @descr_in: address of desc |
283 | */ |
284 | static void gelic_card_free_chain(struct gelic_card *card, |
285 | struct gelic_descr *descr_in) |
286 | { |
287 | struct gelic_descr *descr; |
288 | |
289 | for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) { |
290 | dma_unmap_single(ctodev(card), descr->bus_addr, |
291 | GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); |
292 | descr->bus_addr = 0; |
293 | } |
294 | } |
295 | |
296 | /** |
297 | * gelic_card_init_chain - links descriptor chain |
298 | * @card: card structure |
299 | * @chain: address of chain |
300 | * @start_descr: address of descriptor array |
301 | * @no: number of descriptors |
302 | * |
303 | * we manage a circular list that mirrors the hardware structure, |
304 | * except that the hardware uses bus addresses. |
305 | * |
306 | * returns 0 on success, <0 on failure |
307 | */ |
308 | static int gelic_card_init_chain(struct gelic_card *card, |
309 | struct gelic_descr_chain *chain, |
310 | struct gelic_descr *start_descr, int no) |
311 | { |
312 | int i; |
313 | struct gelic_descr *descr; |
314 | |
315 | descr = start_descr; |
316 | memset(descr, 0, sizeof(*descr) * no); |
317 | |
318 | /* set up the hardware pointers in each descriptor */ |
319 | for (i = 0; i < no; i++, descr++) { |
320 | dma_addr_t cpu_addr; |
321 | |
322 | gelic_descr_set_status(descr, status: GELIC_DESCR_DMA_NOT_IN_USE); |
323 | |
324 | cpu_addr = dma_map_single(ctodev(card), descr, |
325 | GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); |
326 | |
327 | if (dma_mapping_error(dev: ctodev(card), dma_addr: cpu_addr)) |
328 | goto iommu_error; |
329 | |
330 | descr->bus_addr = cpu_to_be32(cpu_addr); |
331 | descr->next = descr + 1; |
332 | descr->prev = descr - 1; |
333 | } |
334 | /* make them as ring */ |
335 | (descr - 1)->next = start_descr; |
336 | start_descr->prev = (descr - 1); |
337 | |
338 | /* chain bus addr of hw descriptor */ |
339 | descr = start_descr; |
340 | for (i = 0; i < no; i++, descr++) { |
341 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); |
342 | } |
343 | |
344 | chain->head = start_descr; |
345 | chain->tail = start_descr; |
346 | |
347 | /* do not chain last hw descriptor */ |
348 | (descr - 1)->next_descr_addr = 0; |
349 | |
350 | return 0; |
351 | |
352 | iommu_error: |
353 | for (i--, descr--; 0 <= i; i--, descr--) |
354 | if (descr->bus_addr) |
355 | dma_unmap_single(ctodev(card), descr->bus_addr, |
356 | GELIC_DESCR_SIZE, |
357 | DMA_BIDIRECTIONAL); |
358 | return -ENOMEM; |
359 | } |
360 | |
361 | /** |
362 | * gelic_descr_prepare_rx - reinitializes a rx descriptor |
363 | * @card: card structure |
364 | * @descr: descriptor to re-init |
365 | * |
366 | * return 0 on success, <0 on failure |
367 | * |
368 | * allocates a new rx skb, iommu-maps it and attaches it to the descriptor. |
369 | * Activate the descriptor state-wise |
370 | * |
371 | * Gelic RX sk_buffs must be aligned to GELIC_NET_RXBUF_ALIGN and the length |
372 | * must be a multiple of GELIC_NET_RXBUF_ALIGN. |
373 | */ |
374 | static int gelic_descr_prepare_rx(struct gelic_card *card, |
375 | struct gelic_descr *descr) |
376 | { |
377 | static const unsigned int rx_skb_size = |
378 | ALIGN(GELIC_NET_MAX_FRAME, GELIC_NET_RXBUF_ALIGN) + |
379 | GELIC_NET_RXBUF_ALIGN - 1; |
380 | dma_addr_t cpu_addr; |
381 | int offset; |
382 | |
383 | if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) |
384 | dev_info(ctodev(card), "%s: ERROR status\n" , __func__); |
385 | |
386 | descr->skb = netdev_alloc_skb(dev: *card->netdev, length: rx_skb_size); |
387 | if (!descr->skb) { |
388 | descr->buf_addr = 0; /* tell DMAC don't touch memory */ |
389 | return -ENOMEM; |
390 | } |
391 | descr->buf_size = cpu_to_be32(rx_skb_size); |
392 | descr->dmac_cmd_status = 0; |
393 | descr->result_size = 0; |
394 | descr->valid_size = 0; |
395 | descr->data_error = 0; |
396 | |
397 | offset = ((unsigned long)descr->skb->data) & |
398 | (GELIC_NET_RXBUF_ALIGN - 1); |
399 | if (offset) |
400 | skb_reserve(skb: descr->skb, GELIC_NET_RXBUF_ALIGN - offset); |
401 | /* io-mmu-map the skb */ |
402 | cpu_addr = dma_map_single(ctodev(card), descr->skb->data, |
403 | GELIC_NET_MAX_FRAME, DMA_FROM_DEVICE); |
404 | descr->buf_addr = cpu_to_be32(cpu_addr); |
405 | if (dma_mapping_error(dev: ctodev(card), dma_addr: cpu_addr)) { |
406 | dev_kfree_skb_any(skb: descr->skb); |
407 | descr->skb = NULL; |
408 | dev_info(ctodev(card), |
409 | "%s:Could not iommu-map rx buffer\n" , __func__); |
410 | gelic_descr_set_status(descr, status: GELIC_DESCR_DMA_NOT_IN_USE); |
411 | return -ENOMEM; |
412 | } else { |
413 | gelic_descr_set_status(descr, status: GELIC_DESCR_DMA_CARDOWNED); |
414 | return 0; |
415 | } |
416 | } |
417 | |
418 | /** |
419 | * gelic_card_release_rx_chain - free all skb of rx descr |
420 | * @card: card structure |
421 | * |
422 | */ |
423 | static void gelic_card_release_rx_chain(struct gelic_card *card) |
424 | { |
425 | struct gelic_descr *descr = card->rx_chain.head; |
426 | |
427 | do { |
428 | if (descr->skb) { |
429 | dma_unmap_single(ctodev(card), |
430 | be32_to_cpu(descr->buf_addr), |
431 | descr->skb->len, |
432 | DMA_FROM_DEVICE); |
433 | descr->buf_addr = 0; |
434 | dev_kfree_skb_any(skb: descr->skb); |
435 | descr->skb = NULL; |
436 | gelic_descr_set_status(descr, |
437 | status: GELIC_DESCR_DMA_NOT_IN_USE); |
438 | } |
439 | descr = descr->next; |
440 | } while (descr != card->rx_chain.head); |
441 | } |
442 | |
443 | /** |
444 | * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains |
445 | * @card: card structure |
446 | * |
447 | * fills all descriptors in the rx chain: allocates skbs |
448 | * and iommu-maps them. |
449 | * returns 0 on success, < 0 on failure |
450 | */ |
451 | static int gelic_card_fill_rx_chain(struct gelic_card *card) |
452 | { |
453 | struct gelic_descr *descr = card->rx_chain.head; |
454 | int ret; |
455 | |
456 | do { |
457 | if (!descr->skb) { |
458 | ret = gelic_descr_prepare_rx(card, descr); |
459 | if (ret) |
460 | goto rewind; |
461 | } |
462 | descr = descr->next; |
463 | } while (descr != card->rx_chain.head); |
464 | |
465 | return 0; |
466 | rewind: |
467 | gelic_card_release_rx_chain(card); |
468 | return ret; |
469 | } |
470 | |
471 | /** |
472 | * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains |
473 | * @card: card structure |
474 | * |
475 | * returns 0 on success, < 0 on failure |
476 | */ |
477 | static int gelic_card_alloc_rx_skbs(struct gelic_card *card) |
478 | { |
479 | struct gelic_descr_chain *chain; |
480 | int ret; |
481 | chain = &card->rx_chain; |
482 | ret = gelic_card_fill_rx_chain(card); |
483 | chain->tail = card->rx_top->prev; /* point to the last */ |
484 | return ret; |
485 | } |
486 | |
487 | /** |
488 | * gelic_descr_release_tx - processes a used tx descriptor |
489 | * @card: card structure |
490 | * @descr: descriptor to release |
491 | * |
492 | * releases a used tx descriptor (unmapping, freeing of skb) |
493 | */ |
494 | static void gelic_descr_release_tx(struct gelic_card *card, |
495 | struct gelic_descr *descr) |
496 | { |
497 | struct sk_buff *skb = descr->skb; |
498 | |
499 | BUG_ON(!(be32_to_cpu(descr->data_status) & GELIC_DESCR_TX_TAIL)); |
500 | |
501 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), skb->len, |
502 | DMA_TO_DEVICE); |
503 | dev_kfree_skb_any(skb); |
504 | |
505 | descr->buf_addr = 0; |
506 | descr->buf_size = 0; |
507 | descr->next_descr_addr = 0; |
508 | descr->result_size = 0; |
509 | descr->valid_size = 0; |
510 | descr->data_status = 0; |
511 | descr->data_error = 0; |
512 | descr->skb = NULL; |
513 | |
514 | /* set descr status */ |
515 | gelic_descr_set_status(descr, status: GELIC_DESCR_DMA_NOT_IN_USE); |
516 | } |
517 | |
518 | static void gelic_card_stop_queues(struct gelic_card *card) |
519 | { |
520 | netif_stop_queue(dev: card->netdev[GELIC_PORT_ETHERNET_0]); |
521 | |
522 | if (card->netdev[GELIC_PORT_WIRELESS]) |
523 | netif_stop_queue(dev: card->netdev[GELIC_PORT_WIRELESS]); |
524 | } |
525 | static void gelic_card_wake_queues(struct gelic_card *card) |
526 | { |
527 | netif_wake_queue(dev: card->netdev[GELIC_PORT_ETHERNET_0]); |
528 | |
529 | if (card->netdev[GELIC_PORT_WIRELESS]) |
530 | netif_wake_queue(dev: card->netdev[GELIC_PORT_WIRELESS]); |
531 | } |
532 | /** |
533 | * gelic_card_release_tx_chain - processes sent tx descriptors |
534 | * @card: adapter structure |
535 | * @stop: net_stop sequence |
536 | * |
537 | * releases the tx descriptors that gelic has finished with |
538 | */ |
539 | static void gelic_card_release_tx_chain(struct gelic_card *card, int stop) |
540 | { |
541 | struct gelic_descr_chain *tx_chain; |
542 | enum gelic_descr_dma_status status; |
543 | struct net_device *netdev; |
544 | int release = 0; |
545 | |
546 | for (tx_chain = &card->tx_chain; |
547 | tx_chain->head != tx_chain->tail && tx_chain->tail; |
548 | tx_chain->tail = tx_chain->tail->next) { |
549 | status = gelic_descr_get_status(descr: tx_chain->tail); |
550 | netdev = tx_chain->tail->skb->dev; |
551 | switch (status) { |
552 | case GELIC_DESCR_DMA_RESPONSE_ERROR: |
553 | case GELIC_DESCR_DMA_PROTECTION_ERROR: |
554 | case GELIC_DESCR_DMA_FORCE_END: |
555 | if (printk_ratelimit()) |
556 | dev_info(ctodev(card), |
557 | "%s: forcing end of tx descriptor " \ |
558 | "with status %x\n" , |
559 | __func__, status); |
560 | netdev->stats.tx_dropped++; |
561 | break; |
562 | |
563 | case GELIC_DESCR_DMA_COMPLETE: |
564 | if (tx_chain->tail->skb) { |
565 | netdev->stats.tx_packets++; |
566 | netdev->stats.tx_bytes += |
567 | tx_chain->tail->skb->len; |
568 | } |
569 | break; |
570 | |
571 | case GELIC_DESCR_DMA_CARDOWNED: |
572 | /* pending tx request */ |
573 | default: |
574 | /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */ |
575 | if (!stop) |
576 | goto out; |
577 | } |
578 | gelic_descr_release_tx(card, descr: tx_chain->tail); |
579 | release ++; |
580 | } |
581 | out: |
582 | if (!stop && release) |
583 | gelic_card_wake_queues(card); |
584 | } |
585 | |
586 | /** |
587 | * gelic_net_set_multi - sets multicast addresses and promisc flags |
588 | * @netdev: interface device structure |
589 | * |
590 | * gelic_net_set_multi configures multicast addresses as needed for the |
591 | * netdev interface. It also sets up multicast, allmulti and promisc |
592 | * flags appropriately |
593 | */ |
594 | void gelic_net_set_multi(struct net_device *netdev) |
595 | { |
596 | struct gelic_card *card = netdev_card(d: netdev); |
597 | struct netdev_hw_addr *ha; |
598 | unsigned int i; |
599 | uint8_t *p; |
600 | u64 addr; |
601 | int status; |
602 | |
603 | /* clear all multicast address */ |
604 | status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card), |
605 | 0, 1); |
606 | if (status) |
607 | dev_err(ctodev(card), |
608 | "lv1_net_remove_multicast_address failed %d\n" , |
609 | status); |
610 | /* set broadcast address */ |
611 | status = lv1_net_add_multicast_address(bus_id(card), dev_id(card), |
612 | GELIC_NET_BROADCAST_ADDR, 0); |
613 | if (status) |
614 | dev_err(ctodev(card), |
615 | "lv1_net_add_multicast_address failed, %d\n" , |
616 | status); |
617 | |
618 | if ((netdev->flags & IFF_ALLMULTI) || |
619 | (netdev_mc_count(netdev) > GELIC_NET_MC_COUNT_MAX)) { |
620 | status = lv1_net_add_multicast_address(bus_id(card), |
621 | dev_id(card), |
622 | 0, 1); |
623 | if (status) |
624 | dev_err(ctodev(card), |
625 | "lv1_net_add_multicast_address failed, %d\n" , |
626 | status); |
627 | return; |
628 | } |
629 | |
630 | /* set multicast addresses */ |
631 | netdev_for_each_mc_addr(ha, netdev) { |
632 | addr = 0; |
633 | p = ha->addr; |
634 | for (i = 0; i < ETH_ALEN; i++) { |
635 | addr <<= 8; |
636 | addr |= *p++; |
637 | } |
638 | status = lv1_net_add_multicast_address(bus_id(card), |
639 | dev_id(card), |
640 | addr, 0); |
641 | if (status) |
642 | dev_err(ctodev(card), |
643 | "lv1_net_add_multicast_address failed, %d\n" , |
644 | status); |
645 | } |
646 | } |
647 | |
648 | /** |
649 | * gelic_net_stop - called upon ifconfig down |
650 | * @netdev: interface device structure |
651 | * |
652 | * always returns 0 |
653 | */ |
654 | int gelic_net_stop(struct net_device *netdev) |
655 | { |
656 | struct gelic_card *card; |
657 | |
658 | pr_debug("%s: start\n" , __func__); |
659 | |
660 | netif_stop_queue(dev: netdev); |
661 | netif_carrier_off(dev: netdev); |
662 | |
663 | card = netdev_card(d: netdev); |
664 | gelic_card_down(card); |
665 | |
666 | pr_debug("%s: done\n" , __func__); |
667 | return 0; |
668 | } |
669 | |
670 | /** |
671 | * gelic_card_get_next_tx_descr - returns the next available tx descriptor |
672 | * @card: device structure to get descriptor from |
673 | * |
674 | * returns the address of the next descriptor, or NULL if not available. |
675 | */ |
676 | static struct gelic_descr * |
677 | gelic_card_get_next_tx_descr(struct gelic_card *card) |
678 | { |
679 | if (!card->tx_chain.head) |
680 | return NULL; |
681 | /* see if the next descriptor is free */ |
682 | if (card->tx_chain.tail != card->tx_chain.head->next && |
683 | gelic_descr_get_status(descr: card->tx_chain.head) == |
684 | GELIC_DESCR_DMA_NOT_IN_USE) |
685 | return card->tx_chain.head; |
686 | else |
687 | return NULL; |
688 | |
689 | } |
690 | |
691 | /** |
692 | * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field |
693 | * @descr: descriptor structure to fill out |
694 | * @skb: packet to consider |
695 | * |
696 | * fills out the command and status field of the descriptor structure, |
697 | * depending on hardware checksum settings. This function assumes a wmb() |
698 | * has executed before. |
699 | */ |
700 | static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr, |
701 | struct sk_buff *skb) |
702 | { |
703 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
704 | descr->dmac_cmd_status = |
705 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
706 | GELIC_DESCR_TX_DMA_FRAME_TAIL); |
707 | else { |
708 | /* is packet ip? |
709 | * if yes: tcp? udp? */ |
710 | if (skb->protocol == htons(ETH_P_IP)) { |
711 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
712 | descr->dmac_cmd_status = |
713 | cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM | |
714 | GELIC_DESCR_TX_DMA_FRAME_TAIL); |
715 | |
716 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) |
717 | descr->dmac_cmd_status = |
718 | cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM | |
719 | GELIC_DESCR_TX_DMA_FRAME_TAIL); |
720 | else /* |
721 | * the stack should checksum non-tcp and non-udp |
722 | * packets on his own: NETIF_F_IP_CSUM |
723 | */ |
724 | descr->dmac_cmd_status = |
725 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
726 | GELIC_DESCR_TX_DMA_FRAME_TAIL); |
727 | } |
728 | } |
729 | } |
730 | |
731 | static struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb, |
732 | unsigned short tag) |
733 | { |
734 | struct vlan_ethhdr *veth; |
735 | static unsigned int c; |
736 | |
737 | if (skb_headroom(skb) < VLAN_HLEN) { |
738 | struct sk_buff *sk_tmp = skb; |
739 | pr_debug("%s: hd=%d c=%ud\n" , __func__, skb_headroom(skb), c); |
740 | skb = skb_realloc_headroom(skb: sk_tmp, VLAN_HLEN); |
741 | if (!skb) |
742 | return NULL; |
743 | dev_kfree_skb_any(skb: sk_tmp); |
744 | } |
745 | veth = skb_push(skb, VLAN_HLEN); |
746 | |
747 | /* Move the mac addresses to the top of buffer */ |
748 | memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); |
749 | |
750 | veth->h_vlan_proto = cpu_to_be16(ETH_P_8021Q); |
751 | veth->h_vlan_TCI = htons(tag); |
752 | |
753 | return skb; |
754 | } |
755 | |
756 | /** |
757 | * gelic_descr_prepare_tx - setup a descriptor for sending packets |
758 | * @card: card structure |
759 | * @descr: descriptor structure |
760 | * @skb: packet to use |
761 | * |
762 | * returns 0 on success, <0 on failure. |
763 | * |
764 | */ |
765 | static int gelic_descr_prepare_tx(struct gelic_card *card, |
766 | struct gelic_descr *descr, |
767 | struct sk_buff *skb) |
768 | { |
769 | dma_addr_t buf; |
770 | |
771 | if (card->vlan_required) { |
772 | struct sk_buff *skb_tmp; |
773 | enum gelic_port_type type; |
774 | |
775 | type = netdev_port(d: skb->dev)->type; |
776 | skb_tmp = gelic_put_vlan_tag(skb, |
777 | tag: card->vlan[type].tx); |
778 | if (!skb_tmp) |
779 | return -ENOMEM; |
780 | skb = skb_tmp; |
781 | } |
782 | |
783 | buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); |
784 | |
785 | if (dma_mapping_error(dev: ctodev(card), dma_addr: buf)) { |
786 | dev_err(ctodev(card), |
787 | "dma map 2 failed (%p, %i). Dropping packet\n" , |
788 | skb->data, skb->len); |
789 | return -ENOMEM; |
790 | } |
791 | |
792 | descr->buf_addr = cpu_to_be32(buf); |
793 | descr->buf_size = cpu_to_be32(skb->len); |
794 | descr->skb = skb; |
795 | descr->data_status = 0; |
796 | descr->next_descr_addr = 0; /* terminate hw descr */ |
797 | gelic_descr_set_tx_cmdstat(descr, skb); |
798 | |
799 | /* bump free descriptor pointer */ |
800 | card->tx_chain.head = descr->next; |
801 | return 0; |
802 | } |
803 | |
804 | /** |
805 | * gelic_card_kick_txdma - enables TX DMA processing |
806 | * @card: card structure |
807 | * @descr: descriptor address to enable TX processing at |
808 | * |
809 | */ |
810 | static int gelic_card_kick_txdma(struct gelic_card *card, |
811 | struct gelic_descr *descr) |
812 | { |
813 | int status = 0; |
814 | |
815 | if (card->tx_dma_progress) |
816 | return 0; |
817 | |
818 | if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) { |
819 | card->tx_dma_progress = 1; |
820 | status = lv1_net_start_tx_dma(bus_id(card), dev_id(card), |
821 | descr->bus_addr, 0); |
822 | if (status) { |
823 | card->tx_dma_progress = 0; |
824 | dev_info(ctodev(card), "lv1_net_start_txdma failed," \ |
825 | "status=%d\n" , status); |
826 | } |
827 | } |
828 | return status; |
829 | } |
830 | |
831 | /** |
832 | * gelic_net_xmit - transmits a frame over the device |
833 | * @skb: packet to send out |
834 | * @netdev: interface device structure |
835 | * |
836 | * returns NETDEV_TX_OK on success, NETDEV_TX_BUSY on failure |
837 | */ |
838 | netdev_tx_t gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev) |
839 | { |
840 | struct gelic_card *card = netdev_card(d: netdev); |
841 | struct gelic_descr *descr; |
842 | int result; |
843 | unsigned long flags; |
844 | |
845 | spin_lock_irqsave(&card->tx_lock, flags); |
846 | |
847 | gelic_card_release_tx_chain(card, stop: 0); |
848 | |
849 | descr = gelic_card_get_next_tx_descr(card); |
850 | if (!descr) { |
851 | /* |
852 | * no more descriptors free |
853 | */ |
854 | gelic_card_stop_queues(card); |
855 | spin_unlock_irqrestore(lock: &card->tx_lock, flags); |
856 | return NETDEV_TX_BUSY; |
857 | } |
858 | |
859 | result = gelic_descr_prepare_tx(card, descr, skb); |
860 | if (result) { |
861 | /* |
862 | * DMA map failed. As chances are that failure |
863 | * would continue, just release skb and return |
864 | */ |
865 | netdev->stats.tx_dropped++; |
866 | dev_kfree_skb_any(skb); |
867 | spin_unlock_irqrestore(lock: &card->tx_lock, flags); |
868 | return NETDEV_TX_OK; |
869 | } |
870 | /* |
871 | * link this prepared descriptor to previous one |
872 | * to achieve high performance |
873 | */ |
874 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
875 | /* |
876 | * as hardware descriptor is modified in the above lines, |
877 | * ensure that the hardware sees it |
878 | */ |
879 | wmb(); |
880 | if (gelic_card_kick_txdma(card, descr)) { |
881 | /* |
882 | * kick failed. |
883 | * release descriptor which was just prepared |
884 | */ |
885 | netdev->stats.tx_dropped++; |
886 | /* don't trigger BUG_ON() in gelic_descr_release_tx */ |
887 | descr->data_status = cpu_to_be32(GELIC_DESCR_TX_TAIL); |
888 | gelic_descr_release_tx(card, descr); |
889 | /* reset head */ |
890 | card->tx_chain.head = descr; |
891 | /* reset hw termination */ |
892 | descr->prev->next_descr_addr = 0; |
893 | dev_info(ctodev(card), "%s: kick failure\n" , __func__); |
894 | } |
895 | |
896 | spin_unlock_irqrestore(lock: &card->tx_lock, flags); |
897 | return NETDEV_TX_OK; |
898 | } |
899 | |
900 | /** |
901 | * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on |
902 | * @descr: descriptor to process |
903 | * @card: card structure |
904 | * @netdev: net_device structure to be passed packet |
905 | * |
906 | * iommu-unmaps the skb, fills out skb structure and passes the data to the |
907 | * stack. The descriptor state is not changed. |
908 | */ |
909 | static void gelic_net_pass_skb_up(struct gelic_descr *descr, |
910 | struct gelic_card *card, |
911 | struct net_device *netdev) |
912 | |
913 | { |
914 | struct sk_buff *skb = descr->skb; |
915 | u32 data_status, data_error; |
916 | |
917 | data_status = be32_to_cpu(descr->data_status); |
918 | data_error = be32_to_cpu(descr->data_error); |
919 | /* unmap skb buffer */ |
920 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), |
921 | GELIC_NET_MAX_FRAME, |
922 | DMA_FROM_DEVICE); |
923 | |
924 | skb_put(skb, be32_to_cpu(descr->valid_size)? |
925 | be32_to_cpu(descr->valid_size) : |
926 | be32_to_cpu(descr->result_size)); |
927 | if (!descr->valid_size) |
928 | dev_info(ctodev(card), "buffer full %x %x %x\n" , |
929 | be32_to_cpu(descr->result_size), |
930 | be32_to_cpu(descr->buf_size), |
931 | be32_to_cpu(descr->dmac_cmd_status)); |
932 | |
933 | descr->skb = NULL; |
934 | /* |
935 | * the card put 2 bytes vlan tag in front |
936 | * of the ethernet frame |
937 | */ |
938 | skb_pull(skb, len: 2); |
939 | skb->protocol = eth_type_trans(skb, dev: netdev); |
940 | |
941 | /* checksum offload */ |
942 | if (netdev->features & NETIF_F_RXCSUM) { |
943 | if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) && |
944 | (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK))) |
945 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
946 | else |
947 | skb_checksum_none_assert(skb); |
948 | } else |
949 | skb_checksum_none_assert(skb); |
950 | |
951 | /* update netdevice statistics */ |
952 | netdev->stats.rx_packets++; |
953 | netdev->stats.rx_bytes += skb->len; |
954 | |
955 | /* pass skb up to stack */ |
956 | netif_receive_skb(skb); |
957 | } |
958 | |
959 | /** |
960 | * gelic_card_decode_one_descr - processes an rx descriptor |
961 | * @card: card structure |
962 | * |
963 | * returns 1 if a packet has been sent to the stack, otherwise 0 |
964 | * |
965 | * processes an rx descriptor by iommu-unmapping the data buffer and passing |
966 | * the packet up to the stack |
967 | */ |
968 | static int gelic_card_decode_one_descr(struct gelic_card *card) |
969 | { |
970 | enum gelic_descr_dma_status status; |
971 | struct gelic_descr_chain *chain = &card->rx_chain; |
972 | struct gelic_descr *descr = chain->head; |
973 | struct net_device *netdev = NULL; |
974 | int dmac_chain_ended; |
975 | |
976 | status = gelic_descr_get_status(descr); |
977 | |
978 | if (status == GELIC_DESCR_DMA_CARDOWNED) |
979 | return 0; |
980 | |
981 | if (status == GELIC_DESCR_DMA_NOT_IN_USE) { |
982 | dev_dbg(ctodev(card), "dormant descr? %p\n" , descr); |
983 | return 0; |
984 | } |
985 | |
986 | /* netdevice select */ |
987 | if (card->vlan_required) { |
988 | unsigned int i; |
989 | u16 vid; |
990 | vid = *(u16 *)(descr->skb->data) & VLAN_VID_MASK; |
991 | for (i = 0; i < GELIC_PORT_MAX; i++) { |
992 | if (card->vlan[i].rx == vid) { |
993 | netdev = card->netdev[i]; |
994 | break; |
995 | } |
996 | } |
997 | if (GELIC_PORT_MAX <= i) { |
998 | pr_info("%s: unknown packet vid=%x\n" , __func__, vid); |
999 | goto refill; |
1000 | } |
1001 | } else |
1002 | netdev = card->netdev[GELIC_PORT_ETHERNET_0]; |
1003 | |
1004 | if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) || |
1005 | (status == GELIC_DESCR_DMA_PROTECTION_ERROR) || |
1006 | (status == GELIC_DESCR_DMA_FORCE_END)) { |
1007 | dev_info(ctodev(card), "dropping RX descriptor with state %x\n" , |
1008 | status); |
1009 | netdev->stats.rx_dropped++; |
1010 | goto refill; |
1011 | } |
1012 | |
1013 | if (status == GELIC_DESCR_DMA_BUFFER_FULL) { |
1014 | /* |
1015 | * Buffer full would occur if and only if |
1016 | * the frame length was longer than the size of this |
1017 | * descriptor's buffer. If the frame length was equal |
1018 | * to or shorter than buffer'size, FRAME_END condition |
1019 | * would occur. |
1020 | * Anyway this frame was longer than the MTU, |
1021 | * just drop it. |
1022 | */ |
1023 | dev_info(ctodev(card), "overlength frame\n" ); |
1024 | goto refill; |
1025 | } |
1026 | /* |
1027 | * descriptors any other than FRAME_END here should |
1028 | * be treated as error. |
1029 | */ |
1030 | if (status != GELIC_DESCR_DMA_FRAME_END) { |
1031 | dev_dbg(ctodev(card), "RX descriptor with state %x\n" , |
1032 | status); |
1033 | goto refill; |
1034 | } |
1035 | |
1036 | /* ok, we've got a packet in descr */ |
1037 | gelic_net_pass_skb_up(descr, card, netdev); |
1038 | refill: |
1039 | |
1040 | /* is the current descriptor terminated with next_descr == NULL? */ |
1041 | dmac_chain_ended = |
1042 | be32_to_cpu(descr->dmac_cmd_status) & |
1043 | GELIC_DESCR_RX_DMA_CHAIN_END; |
1044 | /* |
1045 | * So that always DMAC can see the end |
1046 | * of the descriptor chain to avoid |
1047 | * from unwanted DMAC overrun. |
1048 | */ |
1049 | descr->next_descr_addr = 0; |
1050 | |
1051 | /* change the descriptor state: */ |
1052 | gelic_descr_set_status(descr, status: GELIC_DESCR_DMA_NOT_IN_USE); |
1053 | |
1054 | /* |
1055 | * this call can fail, but for now, just leave this |
1056 | * descriptor without skb |
1057 | */ |
1058 | gelic_descr_prepare_rx(card, descr); |
1059 | |
1060 | chain->tail = descr; |
1061 | chain->head = descr->next; |
1062 | |
1063 | /* |
1064 | * Set this descriptor the end of the chain. |
1065 | */ |
1066 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
1067 | |
1068 | /* |
1069 | * If dmac chain was met, DMAC stopped. |
1070 | * thus re-enable it |
1071 | */ |
1072 | |
1073 | if (dmac_chain_ended) |
1074 | gelic_card_enable_rxdmac(card); |
1075 | |
1076 | return 1; |
1077 | } |
1078 | |
1079 | /** |
1080 | * gelic_net_poll - NAPI poll function called by the stack to return packets |
1081 | * @napi: napi structure |
1082 | * @budget: number of packets we can pass to the stack at most |
1083 | * |
1084 | * returns the number of the processed packets |
1085 | * |
1086 | */ |
1087 | static int gelic_net_poll(struct napi_struct *napi, int budget) |
1088 | { |
1089 | struct gelic_card *card = container_of(napi, struct gelic_card, napi); |
1090 | int packets_done = 0; |
1091 | |
1092 | while (packets_done < budget) { |
1093 | if (!gelic_card_decode_one_descr(card)) |
1094 | break; |
1095 | |
1096 | packets_done++; |
1097 | } |
1098 | |
1099 | if (packets_done < budget) { |
1100 | napi_complete_done(n: napi, work_done: packets_done); |
1101 | gelic_card_rx_irq_on(card); |
1102 | } |
1103 | return packets_done; |
1104 | } |
1105 | |
1106 | /* |
1107 | * gelic_card_interrupt - event handler for gelic_net |
1108 | */ |
1109 | static irqreturn_t gelic_card_interrupt(int irq, void *ptr) |
1110 | { |
1111 | unsigned long flags; |
1112 | struct gelic_card *card = ptr; |
1113 | u64 status; |
1114 | |
1115 | status = card->irq_status; |
1116 | |
1117 | if (!status) |
1118 | return IRQ_NONE; |
1119 | |
1120 | status &= card->irq_mask; |
1121 | |
1122 | if (status & GELIC_CARD_RXINT) { |
1123 | gelic_card_rx_irq_off(card); |
1124 | napi_schedule(n: &card->napi); |
1125 | } |
1126 | |
1127 | if (status & GELIC_CARD_TXINT) { |
1128 | spin_lock_irqsave(&card->tx_lock, flags); |
1129 | card->tx_dma_progress = 0; |
1130 | gelic_card_release_tx_chain(card, stop: 0); |
1131 | /* kick outstanding tx descriptor if any */ |
1132 | gelic_card_kick_txdma(card, descr: card->tx_chain.tail); |
1133 | spin_unlock_irqrestore(lock: &card->tx_lock, flags); |
1134 | } |
1135 | |
1136 | /* ether port status changed */ |
1137 | if (status & GELIC_CARD_PORT_STATUS_CHANGED) |
1138 | gelic_card_get_ether_port_status(card, inform: 1); |
1139 | |
1140 | #ifdef CONFIG_GELIC_WIRELESS |
1141 | if (status & (GELIC_CARD_WLAN_EVENT_RECEIVED | |
1142 | GELIC_CARD_WLAN_COMMAND_COMPLETED)) |
1143 | gelic_wl_interrupt(card->netdev[GELIC_PORT_WIRELESS], status); |
1144 | #endif |
1145 | |
1146 | return IRQ_HANDLED; |
1147 | } |
1148 | |
1149 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1150 | /** |
1151 | * gelic_net_poll_controller - artificial interrupt for netconsole etc. |
1152 | * @netdev: interface device structure |
1153 | * |
1154 | * see Documentation/networking/netconsole.rst |
1155 | */ |
1156 | void gelic_net_poll_controller(struct net_device *netdev) |
1157 | { |
1158 | struct gelic_card *card = netdev_card(d: netdev); |
1159 | |
1160 | gelic_card_set_irq_mask(card, mask: 0); |
1161 | gelic_card_interrupt(irq: netdev->irq, ptr: netdev); |
1162 | gelic_card_set_irq_mask(card, mask: card->irq_mask); |
1163 | } |
1164 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
1165 | |
1166 | /** |
1167 | * gelic_net_open - called upon ifconfig up |
1168 | * @netdev: interface device structure |
1169 | * |
1170 | * returns 0 on success, <0 on failure |
1171 | * |
1172 | * gelic_net_open allocates all the descriptors and memory needed for |
1173 | * operation, sets up multicast list and enables interrupts |
1174 | */ |
1175 | int gelic_net_open(struct net_device *netdev) |
1176 | { |
1177 | struct gelic_card *card = netdev_card(d: netdev); |
1178 | |
1179 | dev_dbg(ctodev(card), " -> %s %p\n" , __func__, netdev); |
1180 | |
1181 | gelic_card_up(card); |
1182 | |
1183 | netif_start_queue(dev: netdev); |
1184 | gelic_card_get_ether_port_status(card, inform: 1); |
1185 | |
1186 | dev_dbg(ctodev(card), " <- %s\n" , __func__); |
1187 | return 0; |
1188 | } |
1189 | |
1190 | void gelic_net_get_drvinfo(struct net_device *netdev, |
1191 | struct ethtool_drvinfo *info) |
1192 | { |
1193 | strscpy(p: info->driver, DRV_NAME, size: sizeof(info->driver)); |
1194 | strscpy(p: info->version, DRV_VERSION, size: sizeof(info->version)); |
1195 | } |
1196 | |
1197 | static int gelic_ether_get_link_ksettings(struct net_device *netdev, |
1198 | struct ethtool_link_ksettings *cmd) |
1199 | { |
1200 | struct gelic_card *card = netdev_card(d: netdev); |
1201 | u32 supported, advertising; |
1202 | |
1203 | gelic_card_get_ether_port_status(card, inform: 0); |
1204 | |
1205 | if (card->ether_port_status & GELIC_LV1_ETHER_FULL_DUPLEX) |
1206 | cmd->base.duplex = DUPLEX_FULL; |
1207 | else |
1208 | cmd->base.duplex = DUPLEX_HALF; |
1209 | |
1210 | switch (card->ether_port_status & GELIC_LV1_ETHER_SPEED_MASK) { |
1211 | case GELIC_LV1_ETHER_SPEED_10: |
1212 | cmd->base.speed = SPEED_10; |
1213 | break; |
1214 | case GELIC_LV1_ETHER_SPEED_100: |
1215 | cmd->base.speed = SPEED_100; |
1216 | break; |
1217 | case GELIC_LV1_ETHER_SPEED_1000: |
1218 | cmd->base.speed = SPEED_1000; |
1219 | break; |
1220 | default: |
1221 | pr_info("%s: speed unknown\n" , __func__); |
1222 | cmd->base.speed = SPEED_10; |
1223 | break; |
1224 | } |
1225 | |
1226 | supported = SUPPORTED_TP | SUPPORTED_Autoneg | |
1227 | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | |
1228 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | |
1229 | SUPPORTED_1000baseT_Full; |
1230 | advertising = supported; |
1231 | if (card->link_mode & GELIC_LV1_ETHER_AUTO_NEG) { |
1232 | cmd->base.autoneg = AUTONEG_ENABLE; |
1233 | } else { |
1234 | cmd->base.autoneg = AUTONEG_DISABLE; |
1235 | advertising &= ~ADVERTISED_Autoneg; |
1236 | } |
1237 | cmd->base.port = PORT_TP; |
1238 | |
1239 | ethtool_convert_legacy_u32_to_link_mode(dst: cmd->link_modes.supported, |
1240 | legacy_u32: supported); |
1241 | ethtool_convert_legacy_u32_to_link_mode(dst: cmd->link_modes.advertising, |
1242 | legacy_u32: advertising); |
1243 | |
1244 | return 0; |
1245 | } |
1246 | |
1247 | static int |
1248 | gelic_ether_set_link_ksettings(struct net_device *netdev, |
1249 | const struct ethtool_link_ksettings *cmd) |
1250 | { |
1251 | struct gelic_card *card = netdev_card(d: netdev); |
1252 | u64 mode; |
1253 | int ret; |
1254 | |
1255 | if (cmd->base.autoneg == AUTONEG_ENABLE) { |
1256 | mode = GELIC_LV1_ETHER_AUTO_NEG; |
1257 | } else { |
1258 | switch (cmd->base.speed) { |
1259 | case SPEED_10: |
1260 | mode = GELIC_LV1_ETHER_SPEED_10; |
1261 | break; |
1262 | case SPEED_100: |
1263 | mode = GELIC_LV1_ETHER_SPEED_100; |
1264 | break; |
1265 | case SPEED_1000: |
1266 | mode = GELIC_LV1_ETHER_SPEED_1000; |
1267 | break; |
1268 | default: |
1269 | return -EINVAL; |
1270 | } |
1271 | if (cmd->base.duplex == DUPLEX_FULL) { |
1272 | mode |= GELIC_LV1_ETHER_FULL_DUPLEX; |
1273 | } else if (cmd->base.speed == SPEED_1000) { |
1274 | pr_info("1000 half duplex is not supported.\n" ); |
1275 | return -EINVAL; |
1276 | } |
1277 | } |
1278 | |
1279 | ret = gelic_card_set_link_mode(card, mode); |
1280 | |
1281 | if (ret) |
1282 | return ret; |
1283 | |
1284 | return 0; |
1285 | } |
1286 | |
1287 | static void gelic_net_get_wol(struct net_device *netdev, |
1288 | struct ethtool_wolinfo *wol) |
1289 | { |
1290 | if (0 <= ps3_compare_firmware_version(2, 2, 0)) |
1291 | wol->supported = WAKE_MAGIC; |
1292 | else |
1293 | wol->supported = 0; |
1294 | |
1295 | wol->wolopts = ps3_sys_manager_get_wol() ? wol->supported : 0; |
1296 | memset(&wol->sopass, 0, sizeof(wol->sopass)); |
1297 | } |
1298 | static int gelic_net_set_wol(struct net_device *netdev, |
1299 | struct ethtool_wolinfo *wol) |
1300 | { |
1301 | int status; |
1302 | struct gelic_card *card; |
1303 | u64 v1, v2; |
1304 | |
1305 | if (ps3_compare_firmware_version(2, 2, 0) < 0 || |
1306 | !capable(CAP_NET_ADMIN)) |
1307 | return -EPERM; |
1308 | |
1309 | if (wol->wolopts & ~WAKE_MAGIC) |
1310 | return -EINVAL; |
1311 | |
1312 | card = netdev_card(d: netdev); |
1313 | if (wol->wolopts & WAKE_MAGIC) { |
1314 | status = lv1_net_control(bus_id(card), dev_id(card), |
1315 | GELIC_LV1_SET_WOL, |
1316 | GELIC_LV1_WOL_MAGIC_PACKET, |
1317 | 0, GELIC_LV1_WOL_MP_ENABLE, |
1318 | &v1, &v2); |
1319 | if (status) { |
1320 | pr_info("%s: enabling WOL failed %d\n" , __func__, |
1321 | status); |
1322 | status = -EIO; |
1323 | goto done; |
1324 | } |
1325 | status = lv1_net_control(bus_id(card), dev_id(card), |
1326 | GELIC_LV1_SET_WOL, |
1327 | GELIC_LV1_WOL_ADD_MATCH_ADDR, |
1328 | 0, GELIC_LV1_WOL_MATCH_ALL, |
1329 | &v1, &v2); |
1330 | if (!status) |
1331 | ps3_sys_manager_set_wol(1); |
1332 | else { |
1333 | pr_info("%s: enabling WOL filter failed %d\n" , |
1334 | __func__, status); |
1335 | status = -EIO; |
1336 | } |
1337 | } else { |
1338 | status = lv1_net_control(bus_id(card), dev_id(card), |
1339 | GELIC_LV1_SET_WOL, |
1340 | GELIC_LV1_WOL_MAGIC_PACKET, |
1341 | 0, GELIC_LV1_WOL_MP_DISABLE, |
1342 | &v1, &v2); |
1343 | if (status) { |
1344 | pr_info("%s: disabling WOL failed %d\n" , __func__, |
1345 | status); |
1346 | status = -EIO; |
1347 | goto done; |
1348 | } |
1349 | status = lv1_net_control(bus_id(card), dev_id(card), |
1350 | GELIC_LV1_SET_WOL, |
1351 | GELIC_LV1_WOL_DELETE_MATCH_ADDR, |
1352 | 0, GELIC_LV1_WOL_MATCH_ALL, |
1353 | &v1, &v2); |
1354 | if (!status) |
1355 | ps3_sys_manager_set_wol(0); |
1356 | else { |
1357 | pr_info("%s: removing WOL filter failed %d\n" , |
1358 | __func__, status); |
1359 | status = -EIO; |
1360 | } |
1361 | } |
1362 | done: |
1363 | return status; |
1364 | } |
1365 | |
1366 | static const struct ethtool_ops gelic_ether_ethtool_ops = { |
1367 | .get_drvinfo = gelic_net_get_drvinfo, |
1368 | .get_link = ethtool_op_get_link, |
1369 | .get_wol = gelic_net_get_wol, |
1370 | .set_wol = gelic_net_set_wol, |
1371 | .get_link_ksettings = gelic_ether_get_link_ksettings, |
1372 | .set_link_ksettings = gelic_ether_set_link_ksettings, |
1373 | }; |
1374 | |
1375 | /** |
1376 | * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout |
1377 | * function (to be called not under interrupt status) |
1378 | * @work: work is context of tx timout task |
1379 | * |
1380 | * called as task when tx hangs, resets interface (if interface is up) |
1381 | */ |
1382 | static void gelic_net_tx_timeout_task(struct work_struct *work) |
1383 | { |
1384 | struct gelic_card *card = |
1385 | container_of(work, struct gelic_card, tx_timeout_task); |
1386 | struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET_0]; |
1387 | |
1388 | dev_info(ctodev(card), "%s:Timed out. Restarting...\n" , __func__); |
1389 | |
1390 | if (!(netdev->flags & IFF_UP)) |
1391 | goto out; |
1392 | |
1393 | netif_device_detach(dev: netdev); |
1394 | gelic_net_stop(netdev); |
1395 | |
1396 | gelic_net_open(netdev); |
1397 | netif_device_attach(dev: netdev); |
1398 | |
1399 | out: |
1400 | atomic_dec(v: &card->tx_timeout_task_counter); |
1401 | } |
1402 | |
1403 | /** |
1404 | * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in. |
1405 | * @netdev: interface device structure |
1406 | * @txqueue: unused |
1407 | * |
1408 | * called, if tx hangs. Schedules a task that resets the interface |
1409 | */ |
1410 | void gelic_net_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
1411 | { |
1412 | struct gelic_card *card; |
1413 | |
1414 | card = netdev_card(d: netdev); |
1415 | atomic_inc(v: &card->tx_timeout_task_counter); |
1416 | if (netdev->flags & IFF_UP) |
1417 | schedule_work(work: &card->tx_timeout_task); |
1418 | else |
1419 | atomic_dec(v: &card->tx_timeout_task_counter); |
1420 | } |
1421 | |
1422 | static const struct net_device_ops gelic_netdevice_ops = { |
1423 | .ndo_open = gelic_net_open, |
1424 | .ndo_stop = gelic_net_stop, |
1425 | .ndo_start_xmit = gelic_net_xmit, |
1426 | .ndo_set_rx_mode = gelic_net_set_multi, |
1427 | .ndo_tx_timeout = gelic_net_tx_timeout, |
1428 | .ndo_set_mac_address = eth_mac_addr, |
1429 | .ndo_validate_addr = eth_validate_addr, |
1430 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1431 | .ndo_poll_controller = gelic_net_poll_controller, |
1432 | #endif |
1433 | }; |
1434 | |
1435 | /** |
1436 | * gelic_ether_setup_netdev_ops - initialization of net_device operations |
1437 | * @netdev: net_device structure |
1438 | * @napi: napi structure |
1439 | * |
1440 | * fills out function pointers in the net_device structure |
1441 | */ |
1442 | static void gelic_ether_setup_netdev_ops(struct net_device *netdev, |
1443 | struct napi_struct *napi) |
1444 | { |
1445 | netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT; |
1446 | /* NAPI */ |
1447 | netif_napi_add(dev: netdev, napi, poll: gelic_net_poll); |
1448 | netdev->ethtool_ops = &gelic_ether_ethtool_ops; |
1449 | netdev->netdev_ops = &gelic_netdevice_ops; |
1450 | } |
1451 | |
1452 | /** |
1453 | * gelic_ether_setup_netdev - initialization of net_device |
1454 | * @netdev: net_device structure |
1455 | * @card: card structure |
1456 | * |
1457 | * Returns 0 on success or <0 on failure |
1458 | * |
1459 | * gelic_ether_setup_netdev initializes the net_device structure |
1460 | * and register it. |
1461 | **/ |
1462 | int gelic_net_setup_netdev(struct net_device *netdev, struct gelic_card *card) |
1463 | { |
1464 | int status; |
1465 | u64 v1, v2; |
1466 | |
1467 | netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; |
1468 | |
1469 | netdev->features = NETIF_F_IP_CSUM; |
1470 | if (GELIC_CARD_RX_CSUM_DEFAULT) |
1471 | netdev->features |= NETIF_F_RXCSUM; |
1472 | |
1473 | status = lv1_net_control(bus_id(card), dev_id(card), |
1474 | GELIC_LV1_GET_MAC_ADDRESS, |
1475 | 0, 0, 0, &v1, &v2); |
1476 | v1 <<= 16; |
1477 | if (status || !is_valid_ether_addr(addr: (u8 *)&v1)) { |
1478 | dev_info(ctodev(card), |
1479 | "%s:lv1_net_control GET_MAC_ADDR failed %d\n" , |
1480 | __func__, status); |
1481 | return -EINVAL; |
1482 | } |
1483 | eth_hw_addr_set(dev: netdev, addr: (u8 *)&v1); |
1484 | |
1485 | if (card->vlan_required) { |
1486 | netdev->hard_header_len += VLAN_HLEN; |
1487 | /* |
1488 | * As vlan is internally used, |
1489 | * we can not receive vlan packets |
1490 | */ |
1491 | netdev->features |= NETIF_F_VLAN_CHALLENGED; |
1492 | } |
1493 | |
1494 | /* MTU range: 64 - 1518 */ |
1495 | netdev->min_mtu = GELIC_NET_MIN_MTU; |
1496 | netdev->max_mtu = GELIC_NET_MAX_MTU; |
1497 | |
1498 | status = register_netdev(dev: netdev); |
1499 | if (status) { |
1500 | dev_err(ctodev(card), "%s:Couldn't register %s %d\n" , |
1501 | __func__, netdev->name, status); |
1502 | return status; |
1503 | } |
1504 | dev_info(ctodev(card), "%s: MAC addr %pM\n" , |
1505 | netdev->name, netdev->dev_addr); |
1506 | |
1507 | return 0; |
1508 | } |
1509 | |
1510 | /** |
1511 | * gelic_alloc_card_net - allocates net_device and card structure |
1512 | * |
1513 | * returns the card structure or NULL in case of errors |
1514 | * |
1515 | * the card and net_device structures are linked to each other |
1516 | */ |
1517 | #define GELIC_ALIGN (32) |
1518 | static struct gelic_card *gelic_alloc_card_net(struct net_device **netdev) |
1519 | { |
1520 | struct gelic_card *card; |
1521 | struct gelic_port *port; |
1522 | void *p; |
1523 | size_t alloc_size; |
1524 | /* |
1525 | * gelic requires dma descriptor is 32 bytes aligned and |
1526 | * the hypervisor requires irq_status is 8 bytes aligned. |
1527 | */ |
1528 | BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8); |
1529 | BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32); |
1530 | alloc_size = |
1531 | sizeof(struct gelic_card) + |
1532 | sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS + |
1533 | sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS + |
1534 | GELIC_ALIGN - 1; |
1535 | |
1536 | p = kzalloc(size: alloc_size, GFP_KERNEL); |
1537 | if (!p) |
1538 | return NULL; |
1539 | card = PTR_ALIGN(p, GELIC_ALIGN); |
1540 | card->unalign = p; |
1541 | |
1542 | /* |
1543 | * alloc netdev |
1544 | */ |
1545 | *netdev = alloc_etherdev(sizeof(struct gelic_port)); |
1546 | if (!*netdev) { |
1547 | kfree(objp: card->unalign); |
1548 | return NULL; |
1549 | } |
1550 | port = netdev_priv(dev: *netdev); |
1551 | |
1552 | /* gelic_port */ |
1553 | port->netdev = *netdev; |
1554 | port->card = card; |
1555 | port->type = GELIC_PORT_ETHERNET_0; |
1556 | |
1557 | /* gelic_card */ |
1558 | card->netdev[GELIC_PORT_ETHERNET_0] = *netdev; |
1559 | |
1560 | INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task); |
1561 | init_waitqueue_head(&card->waitq); |
1562 | atomic_set(v: &card->tx_timeout_task_counter, i: 0); |
1563 | mutex_init(&card->updown_lock); |
1564 | atomic_set(v: &card->users, i: 0); |
1565 | |
1566 | return card; |
1567 | } |
1568 | |
1569 | static void gelic_card_get_vlan_info(struct gelic_card *card) |
1570 | { |
1571 | u64 v1, v2; |
1572 | int status; |
1573 | unsigned int i; |
1574 | struct { |
1575 | int tx; |
1576 | int rx; |
1577 | } vlan_id_ix[2] = { |
1578 | [GELIC_PORT_ETHERNET_0] = { |
1579 | .tx = GELIC_LV1_VLAN_TX_ETHERNET_0, |
1580 | .rx = GELIC_LV1_VLAN_RX_ETHERNET_0 |
1581 | }, |
1582 | [GELIC_PORT_WIRELESS] = { |
1583 | .tx = GELIC_LV1_VLAN_TX_WIRELESS, |
1584 | .rx = GELIC_LV1_VLAN_RX_WIRELESS |
1585 | } |
1586 | }; |
1587 | |
1588 | for (i = 0; i < ARRAY_SIZE(vlan_id_ix); i++) { |
1589 | /* tx tag */ |
1590 | status = lv1_net_control(bus_id(card), dev_id(card), |
1591 | GELIC_LV1_GET_VLAN_ID, |
1592 | vlan_id_ix[i].tx, |
1593 | 0, 0, &v1, &v2); |
1594 | if (status || !v1) { |
1595 | if (status != LV1_NO_ENTRY) |
1596 | dev_dbg(ctodev(card), |
1597 | "get vlan id for tx(%d) failed(%d)\n" , |
1598 | vlan_id_ix[i].tx, status); |
1599 | card->vlan[i].tx = 0; |
1600 | card->vlan[i].rx = 0; |
1601 | continue; |
1602 | } |
1603 | card->vlan[i].tx = (u16)v1; |
1604 | |
1605 | /* rx tag */ |
1606 | status = lv1_net_control(bus_id(card), dev_id(card), |
1607 | GELIC_LV1_GET_VLAN_ID, |
1608 | vlan_id_ix[i].rx, |
1609 | 0, 0, &v1, &v2); |
1610 | if (status || !v1) { |
1611 | if (status != LV1_NO_ENTRY) |
1612 | dev_info(ctodev(card), |
1613 | "get vlan id for rx(%d) failed(%d)\n" , |
1614 | vlan_id_ix[i].rx, status); |
1615 | card->vlan[i].tx = 0; |
1616 | card->vlan[i].rx = 0; |
1617 | continue; |
1618 | } |
1619 | card->vlan[i].rx = (u16)v1; |
1620 | |
1621 | dev_dbg(ctodev(card), "vlan_id[%d] tx=%02x rx=%02x\n" , |
1622 | i, card->vlan[i].tx, card->vlan[i].rx); |
1623 | } |
1624 | |
1625 | if (card->vlan[GELIC_PORT_ETHERNET_0].tx) { |
1626 | BUG_ON(!card->vlan[GELIC_PORT_WIRELESS].tx); |
1627 | card->vlan_required = 1; |
1628 | } else |
1629 | card->vlan_required = 0; |
1630 | |
1631 | /* check wirelss capable firmware */ |
1632 | if (ps3_compare_firmware_version(1, 6, 0) < 0) { |
1633 | card->vlan[GELIC_PORT_WIRELESS].tx = 0; |
1634 | card->vlan[GELIC_PORT_WIRELESS].rx = 0; |
1635 | } |
1636 | |
1637 | dev_info(ctodev(card), "internal vlan %s\n" , |
1638 | card->vlan_required? "enabled" : "disabled" ); |
1639 | } |
1640 | /* |
1641 | * ps3_gelic_driver_probe - add a device to the control of this driver |
1642 | */ |
1643 | static int ps3_gelic_driver_probe(struct ps3_system_bus_device *dev) |
1644 | { |
1645 | struct gelic_card *card; |
1646 | struct net_device *netdev; |
1647 | int result; |
1648 | |
1649 | pr_debug("%s: called\n" , __func__); |
1650 | |
1651 | udbg_shutdown_ps3gelic(); |
1652 | |
1653 | result = ps3_open_hv_device(dev); |
1654 | |
1655 | if (result) { |
1656 | dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n" , |
1657 | __func__); |
1658 | goto fail_open; |
1659 | } |
1660 | |
1661 | result = ps3_dma_region_create(dev->d_region); |
1662 | |
1663 | if (result) { |
1664 | dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n" , |
1665 | __func__, result); |
1666 | BUG_ON("check region type" ); |
1667 | goto fail_dma_region; |
1668 | } |
1669 | |
1670 | /* alloc card/netdevice */ |
1671 | card = gelic_alloc_card_net(netdev: &netdev); |
1672 | if (!card) { |
1673 | dev_info(&dev->core, "%s:gelic_net_alloc_card failed\n" , |
1674 | __func__); |
1675 | result = -ENOMEM; |
1676 | goto fail_alloc_card; |
1677 | } |
1678 | ps3_system_bus_set_drvdata(dev, card); |
1679 | card->dev = dev; |
1680 | |
1681 | /* get internal vlan info */ |
1682 | gelic_card_get_vlan_info(card); |
1683 | |
1684 | card->link_mode = GELIC_LV1_ETHER_AUTO_NEG; |
1685 | |
1686 | /* setup interrupt */ |
1687 | result = lv1_net_set_interrupt_status_indicator(bus_id(card), |
1688 | dev_id(card), |
1689 | ps3_mm_phys_to_lpar(__pa(&card->irq_status)), |
1690 | 0); |
1691 | |
1692 | if (result) { |
1693 | dev_dbg(&dev->core, |
1694 | "%s:set_interrupt_status_indicator failed: %s\n" , |
1695 | __func__, ps3_result(result)); |
1696 | result = -EIO; |
1697 | goto fail_status_indicator; |
1698 | } |
1699 | |
1700 | result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY, |
1701 | &card->irq); |
1702 | |
1703 | if (result) { |
1704 | dev_info(ctodev(card), |
1705 | "%s:gelic_net_open_device failed (%d)\n" , |
1706 | __func__, result); |
1707 | result = -EPERM; |
1708 | goto fail_alloc_irq; |
1709 | } |
1710 | result = request_irq(irq: card->irq, handler: gelic_card_interrupt, |
1711 | flags: 0, name: netdev->name, dev: card); |
1712 | |
1713 | if (result) { |
1714 | dev_info(ctodev(card), "%s:request_irq failed (%d)\n" , |
1715 | __func__, result); |
1716 | goto fail_request_irq; |
1717 | } |
1718 | |
1719 | /* setup card structure */ |
1720 | card->irq_mask = GELIC_CARD_RXINT | GELIC_CARD_TXINT | |
1721 | GELIC_CARD_PORT_STATUS_CHANGED; |
1722 | |
1723 | |
1724 | result = gelic_card_init_chain(card, chain: &card->tx_chain, |
1725 | start_descr: card->descr, GELIC_NET_TX_DESCRIPTORS); |
1726 | if (result) |
1727 | goto fail_alloc_tx; |
1728 | result = gelic_card_init_chain(card, chain: &card->rx_chain, |
1729 | start_descr: card->descr + GELIC_NET_TX_DESCRIPTORS, |
1730 | GELIC_NET_RX_DESCRIPTORS); |
1731 | if (result) |
1732 | goto fail_alloc_rx; |
1733 | |
1734 | /* head of chain */ |
1735 | card->tx_top = card->tx_chain.head; |
1736 | card->rx_top = card->rx_chain.head; |
1737 | dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n" , |
1738 | card->rx_top, card->tx_top, sizeof(struct gelic_descr), |
1739 | GELIC_NET_RX_DESCRIPTORS); |
1740 | /* allocate rx skbs */ |
1741 | result = gelic_card_alloc_rx_skbs(card); |
1742 | if (result) |
1743 | goto fail_alloc_skbs; |
1744 | |
1745 | spin_lock_init(&card->tx_lock); |
1746 | card->tx_dma_progress = 0; |
1747 | |
1748 | /* setup net_device structure */ |
1749 | netdev->irq = card->irq; |
1750 | SET_NETDEV_DEV(netdev, &card->dev->core); |
1751 | gelic_ether_setup_netdev_ops(netdev, napi: &card->napi); |
1752 | result = gelic_net_setup_netdev(netdev, card); |
1753 | if (result) { |
1754 | dev_dbg(&dev->core, "%s: setup_netdev failed %d\n" , |
1755 | __func__, result); |
1756 | goto fail_setup_netdev; |
1757 | } |
1758 | |
1759 | #ifdef CONFIG_GELIC_WIRELESS |
1760 | result = gelic_wl_driver_probe(card); |
1761 | if (result) { |
1762 | dev_dbg(&dev->core, "%s: WL init failed\n" , __func__); |
1763 | goto fail_setup_netdev; |
1764 | } |
1765 | #endif |
1766 | pr_debug("%s: done\n" , __func__); |
1767 | return 0; |
1768 | |
1769 | fail_setup_netdev: |
1770 | fail_alloc_skbs: |
1771 | gelic_card_free_chain(card, descr_in: card->rx_chain.head); |
1772 | fail_alloc_rx: |
1773 | gelic_card_free_chain(card, descr_in: card->tx_chain.head); |
1774 | fail_alloc_tx: |
1775 | free_irq(card->irq, card); |
1776 | netdev->irq = 0; |
1777 | fail_request_irq: |
1778 | ps3_sb_event_receive_port_destroy(dev, card->irq); |
1779 | fail_alloc_irq: |
1780 | lv1_net_set_interrupt_status_indicator(bus_id(card), |
1781 | bus_id(card), |
1782 | 0, 0); |
1783 | fail_status_indicator: |
1784 | ps3_system_bus_set_drvdata(dev, NULL); |
1785 | kfree(objp: netdev_card(d: netdev)->unalign); |
1786 | free_netdev(dev: netdev); |
1787 | fail_alloc_card: |
1788 | ps3_dma_region_free(dev->d_region); |
1789 | fail_dma_region: |
1790 | ps3_close_hv_device(dev); |
1791 | fail_open: |
1792 | return result; |
1793 | } |
1794 | |
1795 | /* |
1796 | * ps3_gelic_driver_remove - remove a device from the control of this driver |
1797 | */ |
1798 | |
1799 | static void ps3_gelic_driver_remove(struct ps3_system_bus_device *dev) |
1800 | { |
1801 | struct gelic_card *card = ps3_system_bus_get_drvdata(dev); |
1802 | struct net_device *netdev0; |
1803 | pr_debug("%s: called\n" , __func__); |
1804 | |
1805 | /* set auto-negotiation */ |
1806 | gelic_card_set_link_mode(card, mode: GELIC_LV1_ETHER_AUTO_NEG); |
1807 | |
1808 | #ifdef CONFIG_GELIC_WIRELESS |
1809 | gelic_wl_driver_remove(card); |
1810 | #endif |
1811 | /* stop interrupt */ |
1812 | gelic_card_set_irq_mask(card, mask: 0); |
1813 | |
1814 | /* turn off DMA, force end */ |
1815 | gelic_card_disable_rxdmac(card); |
1816 | gelic_card_disable_txdmac(card); |
1817 | |
1818 | /* release chains */ |
1819 | gelic_card_release_tx_chain(card, stop: 1); |
1820 | gelic_card_release_rx_chain(card); |
1821 | |
1822 | gelic_card_free_chain(card, descr_in: card->tx_top); |
1823 | gelic_card_free_chain(card, descr_in: card->rx_top); |
1824 | |
1825 | netdev0 = card->netdev[GELIC_PORT_ETHERNET_0]; |
1826 | /* disconnect event port */ |
1827 | free_irq(card->irq, card); |
1828 | netdev0->irq = 0; |
1829 | ps3_sb_event_receive_port_destroy(card->dev, card->irq); |
1830 | |
1831 | wait_event(card->waitq, |
1832 | atomic_read(&card->tx_timeout_task_counter) == 0); |
1833 | |
1834 | lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card), |
1835 | 0 , 0); |
1836 | |
1837 | unregister_netdev(dev: netdev0); |
1838 | kfree(objp: netdev_card(d: netdev0)->unalign); |
1839 | free_netdev(dev: netdev0); |
1840 | |
1841 | ps3_system_bus_set_drvdata(dev, NULL); |
1842 | |
1843 | ps3_dma_region_free(dev->d_region); |
1844 | |
1845 | ps3_close_hv_device(dev); |
1846 | |
1847 | pr_debug("%s: done\n" , __func__); |
1848 | } |
1849 | |
1850 | static struct ps3_system_bus_driver ps3_gelic_driver = { |
1851 | .match_id = PS3_MATCH_ID_GELIC, |
1852 | .probe = ps3_gelic_driver_probe, |
1853 | .remove = ps3_gelic_driver_remove, |
1854 | .shutdown = ps3_gelic_driver_remove, |
1855 | .core.name = "ps3_gelic_driver" , |
1856 | .core.owner = THIS_MODULE, |
1857 | }; |
1858 | |
1859 | static int __init ps3_gelic_driver_init (void) |
1860 | { |
1861 | return firmware_has_feature(FW_FEATURE_PS3_LV1) |
1862 | ? ps3_system_bus_driver_register(&ps3_gelic_driver) |
1863 | : -ENODEV; |
1864 | } |
1865 | |
1866 | static void __exit ps3_gelic_driver_exit (void) |
1867 | { |
1868 | ps3_system_bus_driver_unregister(&ps3_gelic_driver); |
1869 | } |
1870 | |
1871 | module_init(ps3_gelic_driver_init); |
1872 | module_exit(ps3_gelic_driver_exit); |
1873 | |
1874 | MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC); |
1875 | |
1876 | |