Commit | Line | Data |
---|---|---|
02c18891 MM |
1 | /* |
2 | * PS3 gelic network driver. | |
3 | * | |
4 | * Copyright (C) 2007 Sony Computer Entertainment Inc. | |
5 | * Copyright 2006, 2007 Sony Corporation | |
6 | * | |
7 | * This file is based on: spider_net.c | |
8 | * | |
9 | * (C) Copyright IBM Corp. 2005 | |
10 | * | |
11 | * Authors : Utz Bacher <utz.bacher@de.ibm.com> | |
12 | * Jens Osterkamp <Jens.Osterkamp@de.ibm.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
29 | #undef DEBUG | |
30 | ||
31 | #include <linux/kernel.h> | |
32 | #include <linux/module.h> | |
33 | ||
34 | #include <linux/etherdevice.h> | |
35 | #include <linux/ethtool.h> | |
36 | #include <linux/if_vlan.h> | |
37 | ||
38 | #include <linux/in.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
41 | ||
42 | #include <linux/dma-mapping.h> | |
43 | #include <net/checksum.h> | |
44 | #include <asm/firmware.h> | |
45 | #include <asm/ps3.h> | |
46 | #include <asm/lv1call.h> | |
47 | ||
48 | #include "ps3_gelic_net.h" | |
49 | ||
50 | #define DRV_NAME "Gelic Network Driver" | |
589866f9 | 51 | #define DRV_VERSION "1.1" |
02c18891 MM |
52 | |
53 | MODULE_AUTHOR("SCE Inc."); | |
54 | MODULE_DESCRIPTION("Gelic Network driver"); | |
55 | MODULE_LICENSE("GPL"); | |
56 | ||
589866f9 MM |
57 | |
58 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card); | |
59 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card); | |
60 | static inline void gelic_card_disable_txdmac(struct gelic_card *card); | |
61 | static inline void gelic_card_reset_chain(struct gelic_card *card, | |
62 | struct gelic_descr_chain *chain, | |
63 | struct gelic_descr *start_descr); | |
02c18891 MM |
64 | |
65 | /* set irq_mask */ | |
589866f9 | 66 | int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask) |
02c18891 MM |
67 | { |
68 | int status; | |
69 | ||
70 | status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card), | |
71 | mask, 0); | |
72 | if (status) | |
73 | dev_info(ctodev(card), | |
589866f9 | 74 | "%s failed %d\n", __func__, status); |
02c18891 MM |
75 | return status; |
76 | } | |
589866f9 | 77 | |
59e97327 | 78 | static inline void gelic_card_rx_irq_on(struct gelic_card *card) |
02c18891 | 79 | { |
589866f9 MM |
80 | card->irq_mask |= GELIC_CARD_RXINT; |
81 | gelic_card_set_irq_mask(card, card->irq_mask); | |
02c18891 | 82 | } |
59e97327 | 83 | static inline void gelic_card_rx_irq_off(struct gelic_card *card) |
02c18891 | 84 | { |
589866f9 MM |
85 | card->irq_mask &= ~GELIC_CARD_RXINT; |
86 | gelic_card_set_irq_mask(card, card->irq_mask); | |
02c18891 | 87 | } |
01fed4c2 | 88 | |
589866f9 MM |
89 | static void gelic_card_get_ether_port_status(struct gelic_card *card, |
90 | int inform) | |
01fed4c2 MM |
91 | { |
92 | u64 v2; | |
93 | struct net_device *ether_netdev; | |
94 | ||
95 | lv1_net_control(bus_id(card), dev_id(card), | |
96 | GELIC_LV1_GET_ETH_PORT_STATUS, | |
97 | GELIC_LV1_VLAN_TX_ETHERNET, 0, 0, | |
98 | &card->ether_port_status, &v2); | |
99 | ||
100 | if (inform) { | |
589866f9 | 101 | ether_netdev = card->netdev[GELIC_PORT_ETHERNET]; |
01fed4c2 MM |
102 | if (card->ether_port_status & GELIC_LV1_ETHER_LINK_UP) |
103 | netif_carrier_on(ether_netdev); | |
104 | else | |
105 | netif_carrier_off(ether_netdev); | |
106 | } | |
107 | } | |
108 | ||
589866f9 MM |
109 | void gelic_card_up(struct gelic_card *card) |
110 | { | |
111 | pr_debug("%s: called\n", __func__); | |
112 | down(&card->updown_lock); | |
113 | if (atomic_inc_return(&card->users) == 1) { | |
114 | pr_debug("%s: real do\n", __func__); | |
115 | /* enable irq */ | |
116 | gelic_card_set_irq_mask(card, card->irq_mask); | |
117 | /* start rx */ | |
118 | gelic_card_enable_rxdmac(card); | |
119 | ||
120 | napi_enable(&card->napi); | |
121 | } | |
122 | up(&card->updown_lock); | |
123 | pr_debug("%s: done\n", __func__); | |
124 | } | |
125 | ||
126 | void gelic_card_down(struct gelic_card *card) | |
127 | { | |
128 | u64 mask; | |
129 | pr_debug("%s: called\n", __func__); | |
130 | down(&card->updown_lock); | |
131 | if (atomic_dec_if_positive(&card->users) == 0) { | |
132 | pr_debug("%s: real do\n", __func__); | |
133 | napi_disable(&card->napi); | |
134 | /* | |
135 | * Disable irq. Wireless interrupts will | |
136 | * be disabled later if any | |
137 | */ | |
138 | mask = card->irq_mask & (GELIC_CARD_WLAN_EVENT_RECEIVED | | |
139 | GELIC_CARD_WLAN_COMMAND_COMPLETED); | |
140 | gelic_card_set_irq_mask(card, mask); | |
141 | /* stop rx */ | |
142 | gelic_card_disable_rxdmac(card); | |
143 | gelic_card_reset_chain(card, &card->rx_chain, | |
144 | card->descr + GELIC_NET_TX_DESCRIPTORS); | |
145 | /* stop tx */ | |
146 | gelic_card_disable_txdmac(card); | |
147 | } | |
148 | up(&card->updown_lock); | |
149 | pr_debug("%s: done\n", __func__); | |
150 | } | |
01fed4c2 | 151 | |
02c18891 | 152 | /** |
59e97327 | 153 | * gelic_descr_get_status -- returns the status of a descriptor |
02c18891 MM |
154 | * @descr: descriptor to look at |
155 | * | |
156 | * returns the status as in the dmac_cmd_status field of the descriptor | |
157 | */ | |
59e97327 MM |
158 | static enum gelic_descr_dma_status |
159 | gelic_descr_get_status(struct gelic_descr *descr) | |
02c18891 | 160 | { |
59e97327 | 161 | return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK; |
02c18891 MM |
162 | } |
163 | ||
164 | /** | |
59e97327 | 165 | * gelic_descr_set_status -- sets the status of a descriptor |
02c18891 MM |
166 | * @descr: descriptor to change |
167 | * @status: status to set in the descriptor | |
168 | * | |
169 | * changes the status to the specified value. Doesn't change other bits | |
170 | * in the status | |
171 | */ | |
59e97327 MM |
172 | static void gelic_descr_set_status(struct gelic_descr *descr, |
173 | enum gelic_descr_dma_status status) | |
02c18891 | 174 | { |
59e97327 | 175 | descr->dmac_cmd_status = cpu_to_be32(status | |
589866f9 MM |
176 | (be32_to_cpu(descr->dmac_cmd_status) & |
177 | ~GELIC_DESCR_DMA_STAT_MASK)); | |
02c18891 MM |
178 | /* |
179 | * dma_cmd_status field is used to indicate whether the descriptor | |
180 | * is valid or not. | |
181 | * Usually caller of this function wants to inform that to the | |
182 | * hardware, so we assure here the hardware sees the change. | |
183 | */ | |
184 | wmb(); | |
185 | } | |
186 | ||
187 | /** | |
59e97327 | 188 | * gelic_card_free_chain - free descriptor chain |
02c18891 MM |
189 | * @card: card structure |
190 | * @descr_in: address of desc | |
191 | */ | |
59e97327 MM |
192 | static void gelic_card_free_chain(struct gelic_card *card, |
193 | struct gelic_descr *descr_in) | |
02c18891 | 194 | { |
59e97327 | 195 | struct gelic_descr *descr; |
02c18891 MM |
196 | |
197 | for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) { | |
198 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
59e97327 | 199 | GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); |
02c18891 MM |
200 | descr->bus_addr = 0; |
201 | } | |
202 | } | |
203 | ||
204 | /** | |
59e97327 | 205 | * gelic_card_init_chain - links descriptor chain |
02c18891 MM |
206 | * @card: card structure |
207 | * @chain: address of chain | |
208 | * @start_descr: address of descriptor array | |
209 | * @no: number of descriptors | |
210 | * | |
211 | * we manage a circular list that mirrors the hardware structure, | |
212 | * except that the hardware uses bus addresses. | |
213 | * | |
214 | * returns 0 on success, <0 on failure | |
215 | */ | |
59e97327 MM |
216 | static int gelic_card_init_chain(struct gelic_card *card, |
217 | struct gelic_descr_chain *chain, | |
218 | struct gelic_descr *start_descr, int no) | |
02c18891 MM |
219 | { |
220 | int i; | |
59e97327 | 221 | struct gelic_descr *descr; |
02c18891 MM |
222 | |
223 | descr = start_descr; | |
224 | memset(descr, 0, sizeof(*descr) * no); | |
225 | ||
226 | /* set up the hardware pointers in each descriptor */ | |
227 | for (i = 0; i < no; i++, descr++) { | |
59e97327 | 228 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
229 | descr->bus_addr = |
230 | dma_map_single(ctodev(card), descr, | |
59e97327 | 231 | GELIC_DESCR_SIZE, |
02c18891 MM |
232 | DMA_BIDIRECTIONAL); |
233 | ||
234 | if (!descr->bus_addr) | |
235 | goto iommu_error; | |
236 | ||
237 | descr->next = descr + 1; | |
238 | descr->prev = descr - 1; | |
239 | } | |
240 | /* make them as ring */ | |
241 | (descr - 1)->next = start_descr; | |
242 | start_descr->prev = (descr - 1); | |
243 | ||
244 | /* chain bus addr of hw descriptor */ | |
245 | descr = start_descr; | |
246 | for (i = 0; i < no; i++, descr++) { | |
100e1d89 | 247 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); |
02c18891 MM |
248 | } |
249 | ||
250 | chain->head = start_descr; | |
251 | chain->tail = start_descr; | |
252 | ||
253 | /* do not chain last hw descriptor */ | |
254 | (descr - 1)->next_descr_addr = 0; | |
255 | ||
256 | return 0; | |
257 | ||
258 | iommu_error: | |
259 | for (i--, descr--; 0 <= i; i--, descr--) | |
260 | if (descr->bus_addr) | |
261 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
59e97327 | 262 | GELIC_DESCR_SIZE, |
02c18891 MM |
263 | DMA_BIDIRECTIONAL); |
264 | return -ENOMEM; | |
265 | } | |
266 | ||
589866f9 MM |
267 | /** |
268 | * gelic_card_reset_chain - reset status of a descriptor chain | |
269 | * @card: card structure | |
270 | * @chain: address of chain | |
271 | * @start_descr: address of descriptor array | |
272 | * | |
273 | * Reset the status of dma descriptors to ready state | |
274 | * and re-initialize the hardware chain for later use | |
275 | */ | |
276 | static void gelic_card_reset_chain(struct gelic_card *card, | |
277 | struct gelic_descr_chain *chain, | |
278 | struct gelic_descr *start_descr) | |
279 | { | |
280 | struct gelic_descr *descr; | |
281 | ||
282 | for (descr = start_descr; start_descr != descr->next; descr++) { | |
283 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); | |
284 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); | |
285 | } | |
286 | ||
287 | chain->head = start_descr; | |
288 | chain->tail = (descr - 1); | |
289 | ||
290 | (descr - 1)->next_descr_addr = 0; | |
291 | } | |
02c18891 | 292 | /** |
59e97327 | 293 | * gelic_descr_prepare_rx - reinitializes a rx descriptor |
02c18891 MM |
294 | * @card: card structure |
295 | * @descr: descriptor to re-init | |
296 | * | |
297 | * return 0 on succes, <0 on failure | |
298 | * | |
299 | * allocates a new rx skb, iommu-maps it and attaches it to the descriptor. | |
300 | * Activate the descriptor state-wise | |
301 | */ | |
59e97327 | 302 | static int gelic_descr_prepare_rx(struct gelic_card *card, |
589866f9 | 303 | struct gelic_descr *descr) |
02c18891 MM |
304 | { |
305 | int offset; | |
306 | unsigned int bufsize; | |
307 | ||
59e97327 | 308 | if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) |
02c18891 | 309 | dev_info(ctodev(card), "%s: ERROR status \n", __func__); |
02c18891 MM |
310 | /* we need to round up the buffer size to a multiple of 128 */ |
311 | bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN); | |
312 | ||
313 | /* and we need to have it 128 byte aligned, therefore we allocate a | |
314 | * bit more */ | |
589866f9 | 315 | descr->skb = dev_alloc_skb(bufsize + GELIC_NET_RXBUF_ALIGN - 1); |
02c18891 MM |
316 | if (!descr->skb) { |
317 | descr->buf_addr = 0; /* tell DMAC don't touch memory */ | |
318 | dev_info(ctodev(card), | |
319 | "%s:allocate skb failed !!\n", __func__); | |
320 | return -ENOMEM; | |
321 | } | |
100e1d89 | 322 | descr->buf_size = cpu_to_be32(bufsize); |
02c18891 MM |
323 | descr->dmac_cmd_status = 0; |
324 | descr->result_size = 0; | |
325 | descr->valid_size = 0; | |
326 | descr->data_error = 0; | |
327 | ||
328 | offset = ((unsigned long)descr->skb->data) & | |
329 | (GELIC_NET_RXBUF_ALIGN - 1); | |
330 | if (offset) | |
331 | skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); | |
332 | /* io-mmu-map the skb */ | |
100e1d89 MM |
333 | descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), |
334 | descr->skb->data, | |
335 | GELIC_NET_MAX_MTU, | |
336 | DMA_FROM_DEVICE)); | |
02c18891 MM |
337 | if (!descr->buf_addr) { |
338 | dev_kfree_skb_any(descr->skb); | |
339 | descr->skb = NULL; | |
340 | dev_info(ctodev(card), | |
341 | "%s:Could not iommu-map rx buffer\n", __func__); | |
59e97327 | 342 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
343 | return -ENOMEM; |
344 | } else { | |
59e97327 | 345 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); |
02c18891 MM |
346 | return 0; |
347 | } | |
348 | } | |
349 | ||
350 | /** | |
59e97327 | 351 | * gelic_card_release_rx_chain - free all skb of rx descr |
02c18891 MM |
352 | * @card: card structure |
353 | * | |
354 | */ | |
59e97327 | 355 | static void gelic_card_release_rx_chain(struct gelic_card *card) |
02c18891 | 356 | { |
59e97327 | 357 | struct gelic_descr *descr = card->rx_chain.head; |
02c18891 MM |
358 | |
359 | do { | |
360 | if (descr->skb) { | |
361 | dma_unmap_single(ctodev(card), | |
100e1d89 | 362 | be32_to_cpu(descr->buf_addr), |
02c18891 MM |
363 | descr->skb->len, |
364 | DMA_FROM_DEVICE); | |
365 | descr->buf_addr = 0; | |
366 | dev_kfree_skb_any(descr->skb); | |
367 | descr->skb = NULL; | |
59e97327 MM |
368 | gelic_descr_set_status(descr, |
369 | GELIC_DESCR_DMA_NOT_IN_USE); | |
02c18891 MM |
370 | } |
371 | descr = descr->next; | |
372 | } while (descr != card->rx_chain.head); | |
373 | } | |
374 | ||
375 | /** | |
59e97327 | 376 | * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains |
02c18891 MM |
377 | * @card: card structure |
378 | * | |
379 | * fills all descriptors in the rx chain: allocates skbs | |
380 | * and iommu-maps them. | |
59e97327 | 381 | * returns 0 on success, < 0 on failure |
02c18891 | 382 | */ |
59e97327 | 383 | static int gelic_card_fill_rx_chain(struct gelic_card *card) |
02c18891 | 384 | { |
59e97327 | 385 | struct gelic_descr *descr = card->rx_chain.head; |
02c18891 MM |
386 | int ret; |
387 | ||
388 | do { | |
389 | if (!descr->skb) { | |
59e97327 | 390 | ret = gelic_descr_prepare_rx(card, descr); |
02c18891 MM |
391 | if (ret) |
392 | goto rewind; | |
393 | } | |
394 | descr = descr->next; | |
395 | } while (descr != card->rx_chain.head); | |
396 | ||
397 | return 0; | |
398 | rewind: | |
59e97327 | 399 | gelic_card_release_rx_chain(card); |
02c18891 MM |
400 | return ret; |
401 | } | |
402 | ||
403 | /** | |
59e97327 | 404 | * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains |
02c18891 MM |
405 | * @card: card structure |
406 | * | |
59e97327 | 407 | * returns 0 on success, < 0 on failure |
02c18891 | 408 | */ |
59e97327 | 409 | static int gelic_card_alloc_rx_skbs(struct gelic_card *card) |
02c18891 | 410 | { |
59e97327 | 411 | struct gelic_descr_chain *chain; |
02c18891 MM |
412 | int ret; |
413 | chain = &card->rx_chain; | |
59e97327 | 414 | ret = gelic_card_fill_rx_chain(card); |
589866f9 | 415 | chain->tail = card->rx_top->prev; /* point to the last */ |
02c18891 MM |
416 | return ret; |
417 | } | |
418 | ||
419 | /** | |
59e97327 | 420 | * gelic_descr_release_tx - processes a used tx descriptor |
02c18891 MM |
421 | * @card: card structure |
422 | * @descr: descriptor to release | |
423 | * | |
424 | * releases a used tx descriptor (unmapping, freeing of skb) | |
425 | */ | |
59e97327 | 426 | static void gelic_descr_release_tx(struct gelic_card *card, |
589866f9 | 427 | struct gelic_descr *descr) |
02c18891 | 428 | { |
173261ed | 429 | struct sk_buff *skb = descr->skb; |
02c18891 | 430 | |
589866f9 MM |
431 | BUG_ON(!(be32_to_cpu(descr->data_status) & GELIC_DESCR_TX_TAIL)); |
432 | ||
433 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), skb->len, | |
434 | DMA_TO_DEVICE); | |
173261ed | 435 | dev_kfree_skb_any(skb); |
02c18891 MM |
436 | |
437 | descr->buf_addr = 0; | |
438 | descr->buf_size = 0; | |
439 | descr->next_descr_addr = 0; | |
440 | descr->result_size = 0; | |
441 | descr->valid_size = 0; | |
442 | descr->data_status = 0; | |
443 | descr->data_error = 0; | |
444 | descr->skb = NULL; | |
445 | ||
446 | /* set descr status */ | |
59e97327 | 447 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
448 | } |
449 | ||
589866f9 MM |
450 | static void gelic_card_stop_queues(struct gelic_card *card) |
451 | { | |
452 | netif_stop_queue(card->netdev[GELIC_PORT_ETHERNET]); | |
453 | ||
454 | if (card->netdev[GELIC_PORT_WIRELESS]) | |
455 | netif_stop_queue(card->netdev[GELIC_PORT_WIRELESS]); | |
456 | } | |
457 | static void gelic_card_wake_queues(struct gelic_card *card) | |
458 | { | |
459 | netif_wake_queue(card->netdev[GELIC_PORT_ETHERNET]); | |
460 | ||
461 | if (card->netdev[GELIC_PORT_WIRELESS]) | |
462 | netif_wake_queue(card->netdev[GELIC_PORT_WIRELESS]); | |
463 | } | |
02c18891 | 464 | /** |
59e97327 | 465 | * gelic_card_release_tx_chain - processes sent tx descriptors |
02c18891 MM |
466 | * @card: adapter structure |
467 | * @stop: net_stop sequence | |
468 | * | |
469 | * releases the tx descriptors that gelic has finished with | |
470 | */ | |
59e97327 | 471 | static void gelic_card_release_tx_chain(struct gelic_card *card, int stop) |
02c18891 | 472 | { |
59e97327 MM |
473 | struct gelic_descr_chain *tx_chain; |
474 | enum gelic_descr_dma_status status; | |
589866f9 | 475 | struct net_device *netdev; |
02c18891 MM |
476 | int release = 0; |
477 | ||
478 | for (tx_chain = &card->tx_chain; | |
479 | tx_chain->head != tx_chain->tail && tx_chain->tail; | |
480 | tx_chain->tail = tx_chain->tail->next) { | |
59e97327 | 481 | status = gelic_descr_get_status(tx_chain->tail); |
589866f9 | 482 | netdev = tx_chain->tail->skb->dev; |
02c18891 | 483 | switch (status) { |
59e97327 MM |
484 | case GELIC_DESCR_DMA_RESPONSE_ERROR: |
485 | case GELIC_DESCR_DMA_PROTECTION_ERROR: | |
486 | case GELIC_DESCR_DMA_FORCE_END: | |
02c18891 MM |
487 | if (printk_ratelimit()) |
488 | dev_info(ctodev(card), | |
489 | "%s: forcing end of tx descriptor " \ | |
490 | "with status %x\n", | |
491 | __func__, status); | |
589866f9 | 492 | netdev->stats.tx_dropped++; |
02c18891 MM |
493 | break; |
494 | ||
59e97327 | 495 | case GELIC_DESCR_DMA_COMPLETE: |
48544cc2 | 496 | if (tx_chain->tail->skb) { |
589866f9 MM |
497 | netdev->stats.tx_packets++; |
498 | netdev->stats.tx_bytes += | |
48544cc2 MM |
499 | tx_chain->tail->skb->len; |
500 | } | |
02c18891 MM |
501 | break; |
502 | ||
59e97327 | 503 | case GELIC_DESCR_DMA_CARDOWNED: |
02c18891 MM |
504 | /* pending tx request */ |
505 | default: | |
59e97327 | 506 | /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */ |
48544cc2 MM |
507 | if (!stop) |
508 | goto out; | |
02c18891 | 509 | } |
59e97327 | 510 | gelic_descr_release_tx(card, tx_chain->tail); |
48544cc2 | 511 | release ++; |
02c18891 MM |
512 | } |
513 | out: | |
173261ed | 514 | if (!stop && release) |
589866f9 | 515 | gelic_card_wake_queues(card); |
02c18891 MM |
516 | } |
517 | ||
518 | /** | |
519 | * gelic_net_set_multi - sets multicast addresses and promisc flags | |
520 | * @netdev: interface device structure | |
521 | * | |
522 | * gelic_net_set_multi configures multicast addresses as needed for the | |
523 | * netdev interface. It also sets up multicast, allmulti and promisc | |
524 | * flags appropriately | |
525 | */ | |
589866f9 | 526 | void gelic_net_set_multi(struct net_device *netdev) |
02c18891 | 527 | { |
589866f9 | 528 | struct gelic_card *card = netdev_card(netdev); |
02c18891 MM |
529 | struct dev_mc_list *mc; |
530 | unsigned int i; | |
531 | uint8_t *p; | |
532 | u64 addr; | |
533 | int status; | |
534 | ||
535 | /* clear all multicast address */ | |
536 | status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card), | |
537 | 0, 1); | |
538 | if (status) | |
539 | dev_err(ctodev(card), | |
540 | "lv1_net_remove_multicast_address failed %d\n", | |
541 | status); | |
542 | /* set broadcast address */ | |
543 | status = lv1_net_add_multicast_address(bus_id(card), dev_id(card), | |
544 | GELIC_NET_BROADCAST_ADDR, 0); | |
545 | if (status) | |
546 | dev_err(ctodev(card), | |
547 | "lv1_net_add_multicast_address failed, %d\n", | |
548 | status); | |
549 | ||
589866f9 MM |
550 | if ((netdev->flags & IFF_ALLMULTI) || |
551 | (netdev->mc_count > GELIC_NET_MC_COUNT_MAX)) { | |
02c18891 MM |
552 | status = lv1_net_add_multicast_address(bus_id(card), |
553 | dev_id(card), | |
554 | 0, 1); | |
555 | if (status) | |
556 | dev_err(ctodev(card), | |
557 | "lv1_net_add_multicast_address failed, %d\n", | |
558 | status); | |
559 | return; | |
560 | } | |
561 | ||
589866f9 | 562 | /* set multicast addresses */ |
02c18891 MM |
563 | for (mc = netdev->mc_list; mc; mc = mc->next) { |
564 | addr = 0; | |
565 | p = mc->dmi_addr; | |
566 | for (i = 0; i < ETH_ALEN; i++) { | |
567 | addr <<= 8; | |
568 | addr |= *p++; | |
569 | } | |
570 | status = lv1_net_add_multicast_address(bus_id(card), | |
571 | dev_id(card), | |
572 | addr, 0); | |
573 | if (status) | |
574 | dev_err(ctodev(card), | |
575 | "lv1_net_add_multicast_address failed, %d\n", | |
576 | status); | |
577 | } | |
578 | } | |
579 | ||
580 | /** | |
59e97327 | 581 | * gelic_card_enable_rxdmac - enables the receive DMA controller |
02c18891 MM |
582 | * @card: card structure |
583 | * | |
59e97327 | 584 | * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN |
02c18891 MM |
585 | * in the GDADMACCNTR register |
586 | */ | |
59e97327 | 587 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card) |
02c18891 MM |
588 | { |
589 | int status; | |
590 | ||
589866f9 MM |
591 | #ifdef DEBUG |
592 | if (gelic_descr_get_status(card->rx_chain.head) != | |
593 | GELIC_DESCR_DMA_CARDOWNED) { | |
594 | printk(KERN_ERR "%s: status=%x\n", __func__, | |
595 | be32_to_cpu(card->rx_chain.head->dmac_cmd_status)); | |
596 | printk(KERN_ERR "%s: nextphy=%x\n", __func__, | |
597 | be32_to_cpu(card->rx_chain.head->next_descr_addr)); | |
598 | printk(KERN_ERR "%s: head=%p\n", __func__, | |
599 | card->rx_chain.head); | |
600 | } | |
601 | #endif | |
02c18891 | 602 | status = lv1_net_start_rx_dma(bus_id(card), dev_id(card), |
589866f9 | 603 | card->rx_chain.head->bus_addr, 0); |
02c18891 MM |
604 | if (status) |
605 | dev_info(ctodev(card), | |
606 | "lv1_net_start_rx_dma failed, status=%d\n", status); | |
607 | } | |
608 | ||
609 | /** | |
59e97327 | 610 | * gelic_card_disable_rxdmac - disables the receive DMA controller |
02c18891 MM |
611 | * @card: card structure |
612 | * | |
59e97327 | 613 | * gelic_card_disable_rxdmac terminates processing on the DMA controller by |
02c18891 MM |
614 | * turing off DMA and issueing a force end |
615 | */ | |
59e97327 | 616 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card) |
02c18891 MM |
617 | { |
618 | int status; | |
619 | ||
620 | /* this hvc blocks until the DMA in progress really stopped */ | |
621 | status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0); | |
622 | if (status) | |
623 | dev_err(ctodev(card), | |
624 | "lv1_net_stop_rx_dma faild, %d\n", status); | |
625 | } | |
626 | ||
627 | /** | |
59e97327 | 628 | * gelic_card_disable_txdmac - disables the transmit DMA controller |
02c18891 MM |
629 | * @card: card structure |
630 | * | |
59e97327 | 631 | * gelic_card_disable_txdmac terminates processing on the DMA controller by |
02c18891 MM |
632 | * turing off DMA and issueing a force end |
633 | */ | |
59e97327 | 634 | static inline void gelic_card_disable_txdmac(struct gelic_card *card) |
02c18891 MM |
635 | { |
636 | int status; | |
637 | ||
638 | /* this hvc blocks until the DMA in progress really stopped */ | |
639 | status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0); | |
640 | if (status) | |
641 | dev_err(ctodev(card), | |
642 | "lv1_net_stop_tx_dma faild, status=%d\n", status); | |
643 | } | |
644 | ||
645 | /** | |
646 | * gelic_net_stop - called upon ifconfig down | |
647 | * @netdev: interface device structure | |
648 | * | |
649 | * always returns 0 | |
650 | */ | |
589866f9 | 651 | int gelic_net_stop(struct net_device *netdev) |
02c18891 | 652 | { |
589866f9 | 653 | struct gelic_card *card; |
02c18891 | 654 | |
589866f9 | 655 | pr_debug("%s: start\n", __func__); |
02c18891 | 656 | |
589866f9 | 657 | netif_stop_queue(netdev); |
02c18891 MM |
658 | netif_carrier_off(netdev); |
659 | ||
589866f9 MM |
660 | card = netdev_card(netdev); |
661 | gelic_card_down(card); | |
02c18891 | 662 | |
589866f9 | 663 | pr_debug("%s: done\n", __func__); |
02c18891 MM |
664 | return 0; |
665 | } | |
666 | ||
667 | /** | |
59e97327 | 668 | * gelic_card_get_next_tx_descr - returns the next available tx descriptor |
02c18891 MM |
669 | * @card: device structure to get descriptor from |
670 | * | |
671 | * returns the address of the next descriptor, or NULL if not available. | |
672 | */ | |
59e97327 MM |
673 | static struct gelic_descr * |
674 | gelic_card_get_next_tx_descr(struct gelic_card *card) | |
02c18891 MM |
675 | { |
676 | if (!card->tx_chain.head) | |
677 | return NULL; | |
173261ed | 678 | /* see if the next descriptor is free */ |
02c18891 | 679 | if (card->tx_chain.tail != card->tx_chain.head->next && |
59e97327 MM |
680 | gelic_descr_get_status(card->tx_chain.head) == |
681 | GELIC_DESCR_DMA_NOT_IN_USE) | |
02c18891 MM |
682 | return card->tx_chain.head; |
683 | else | |
684 | return NULL; | |
685 | ||
686 | } | |
687 | ||
688 | /** | |
589866f9 | 689 | * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field |
02c18891 MM |
690 | * @descr: descriptor structure to fill out |
691 | * @skb: packet to consider | |
02c18891 MM |
692 | * |
693 | * fills out the command and status field of the descriptor structure, | |
694 | * depending on hardware checksum settings. This function assumes a wmb() | |
695 | * has executed before. | |
696 | */ | |
59e97327 MM |
697 | static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr, |
698 | struct sk_buff *skb) | |
02c18891 | 699 | { |
02c18891 | 700 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
100e1d89 | 701 | descr->dmac_cmd_status = |
59e97327 MM |
702 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
703 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
704 | else { |
705 | /* is packet ip? | |
706 | * if yes: tcp? udp? */ | |
707 | if (skb->protocol == htons(ETH_P_IP)) { | |
708 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
709 | descr->dmac_cmd_status = | |
59e97327 MM |
710 | cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM | |
711 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
173261ed | 712 | |
02c18891 MM |
713 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) |
714 | descr->dmac_cmd_status = | |
59e97327 MM |
715 | cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM | |
716 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
717 | else /* |
718 | * the stack should checksum non-tcp and non-udp | |
719 | * packets on his own: NETIF_F_IP_CSUM | |
720 | */ | |
721 | descr->dmac_cmd_status = | |
59e97327 MM |
722 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
723 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
724 | } |
725 | } | |
726 | } | |
727 | ||
173261ed MM |
728 | static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb, |
729 | unsigned short tag) | |
730 | { | |
731 | struct vlan_ethhdr *veth; | |
732 | static unsigned int c; | |
733 | ||
734 | if (skb_headroom(skb) < VLAN_HLEN) { | |
735 | struct sk_buff *sk_tmp = skb; | |
736 | pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c); | |
737 | skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN); | |
738 | if (!skb) | |
739 | return NULL; | |
740 | dev_kfree_skb_any(sk_tmp); | |
741 | } | |
742 | veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); | |
743 | ||
744 | /* Move the mac addresses to the top of buffer */ | |
745 | memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); | |
746 | ||
747 | veth->h_vlan_proto = __constant_htons(ETH_P_8021Q); | |
748 | veth->h_vlan_TCI = htons(tag); | |
749 | ||
750 | return skb; | |
751 | } | |
752 | ||
02c18891 | 753 | /** |
589866f9 | 754 | * gelic_descr_prepare_tx - setup a descriptor for sending packets |
02c18891 MM |
755 | * @card: card structure |
756 | * @descr: descriptor structure | |
757 | * @skb: packet to use | |
758 | * | |
759 | * returns 0 on success, <0 on failure. | |
760 | * | |
761 | */ | |
59e97327 MM |
762 | static int gelic_descr_prepare_tx(struct gelic_card *card, |
763 | struct gelic_descr *descr, | |
764 | struct sk_buff *skb) | |
02c18891 | 765 | { |
173261ed | 766 | dma_addr_t buf; |
02c18891 | 767 | |
589866f9 | 768 | if (card->vlan_required) { |
173261ed | 769 | struct sk_buff *skb_tmp; |
589866f9 MM |
770 | enum gelic_port_type type; |
771 | ||
772 | type = netdev_port(skb->dev)->type; | |
173261ed | 773 | skb_tmp = gelic_put_vlan_tag(skb, |
589866f9 | 774 | card->vlan[type].tx); |
173261ed MM |
775 | if (!skb_tmp) |
776 | return -ENOMEM; | |
777 | skb = skb_tmp; | |
02c18891 MM |
778 | } |
779 | ||
173261ed | 780 | buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); |
02c18891 | 781 | |
173261ed | 782 | if (!buf) { |
02c18891 MM |
783 | dev_err(ctodev(card), |
784 | "dma map 2 failed (%p, %i). Dropping packet\n", | |
173261ed | 785 | skb->data, skb->len); |
02c18891 MM |
786 | return -ENOMEM; |
787 | } | |
788 | ||
100e1d89 MM |
789 | descr->buf_addr = cpu_to_be32(buf); |
790 | descr->buf_size = cpu_to_be32(skb->len); | |
173261ed | 791 | descr->skb = skb; |
02c18891 | 792 | descr->data_status = 0; |
173261ed | 793 | descr->next_descr_addr = 0; /* terminate hw descr */ |
59e97327 | 794 | gelic_descr_set_tx_cmdstat(descr, skb); |
48544cc2 MM |
795 | |
796 | /* bump free descriptor pointer */ | |
173261ed | 797 | card->tx_chain.head = descr->next; |
02c18891 MM |
798 | return 0; |
799 | } | |
800 | ||
801 | /** | |
59e97327 | 802 | * gelic_card_kick_txdma - enables TX DMA processing |
02c18891 MM |
803 | * @card: card structure |
804 | * @descr: descriptor address to enable TX processing at | |
805 | * | |
806 | */ | |
59e97327 MM |
807 | static int gelic_card_kick_txdma(struct gelic_card *card, |
808 | struct gelic_descr *descr) | |
02c18891 | 809 | { |
48544cc2 | 810 | int status = 0; |
02c18891 MM |
811 | |
812 | if (card->tx_dma_progress) | |
813 | return 0; | |
814 | ||
59e97327 | 815 | if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) { |
02c18891 | 816 | card->tx_dma_progress = 1; |
dc029ad9 MM |
817 | status = lv1_net_start_tx_dma(bus_id(card), dev_id(card), |
818 | descr->bus_addr, 0); | |
819 | if (status) | |
02c18891 | 820 | dev_info(ctodev(card), "lv1_net_start_txdma failed," \ |
dc029ad9 | 821 | "status=%d\n", status); |
02c18891 MM |
822 | } |
823 | return status; | |
824 | } | |
825 | ||
826 | /** | |
827 | * gelic_net_xmit - transmits a frame over the device | |
828 | * @skb: packet to send out | |
829 | * @netdev: interface device structure | |
830 | * | |
831 | * returns 0 on success, <0 on failure | |
832 | */ | |
589866f9 | 833 | int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev) |
02c18891 | 834 | { |
589866f9 | 835 | struct gelic_card *card = netdev_card(netdev); |
59e97327 | 836 | struct gelic_descr *descr; |
02c18891 MM |
837 | int result; |
838 | unsigned long flags; | |
839 | ||
589866f9 | 840 | spin_lock_irqsave(&card->tx_lock, flags); |
02c18891 | 841 | |
59e97327 | 842 | gelic_card_release_tx_chain(card, 0); |
48544cc2 | 843 | |
59e97327 | 844 | descr = gelic_card_get_next_tx_descr(card); |
02c18891 | 845 | if (!descr) { |
48544cc2 MM |
846 | /* |
847 | * no more descriptors free | |
848 | */ | |
589866f9 MM |
849 | gelic_card_stop_queues(card); |
850 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
02c18891 MM |
851 | return NETDEV_TX_BUSY; |
852 | } | |
02c18891 | 853 | |
59e97327 | 854 | result = gelic_descr_prepare_tx(card, descr, skb); |
48544cc2 MM |
855 | if (result) { |
856 | /* | |
857 | * DMA map failed. As chanses are that failure | |
858 | * would continue, just release skb and return | |
859 | */ | |
589866f9 | 860 | netdev->stats.tx_dropped++; |
48544cc2 | 861 | dev_kfree_skb_any(skb); |
589866f9 | 862 | spin_unlock_irqrestore(&card->tx_lock, flags); |
48544cc2 MM |
863 | return NETDEV_TX_OK; |
864 | } | |
865 | /* | |
866 | * link this prepared descriptor to previous one | |
867 | * to achieve high performance | |
868 | */ | |
100e1d89 | 869 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
02c18891 MM |
870 | /* |
871 | * as hardware descriptor is modified in the above lines, | |
872 | * ensure that the hardware sees it | |
873 | */ | |
874 | wmb(); | |
59e97327 | 875 | if (gelic_card_kick_txdma(card, descr)) { |
48544cc2 MM |
876 | /* |
877 | * kick failed. | |
878 | * release descriptors which were just prepared | |
879 | */ | |
589866f9 | 880 | netdev->stats.tx_dropped++; |
59e97327 MM |
881 | gelic_descr_release_tx(card, descr); |
882 | gelic_descr_release_tx(card, descr->next); | |
48544cc2 MM |
883 | card->tx_chain.tail = descr->next->next; |
884 | dev_info(ctodev(card), "%s: kick failure\n", __func__); | |
885 | } else { | |
886 | /* OK, DMA started/reserved */ | |
887 | netdev->trans_start = jiffies; | |
888 | } | |
02c18891 | 889 | |
589866f9 | 890 | spin_unlock_irqrestore(&card->tx_lock, flags); |
02c18891 | 891 | return NETDEV_TX_OK; |
02c18891 MM |
892 | } |
893 | ||
894 | /** | |
895 | * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on | |
896 | * @descr: descriptor to process | |
897 | * @card: card structure | |
589866f9 | 898 | * @netdev: net_device structure to be passed packet |
02c18891 MM |
899 | * |
900 | * iommu-unmaps the skb, fills out skb structure and passes the data to the | |
901 | * stack. The descriptor state is not changed. | |
902 | */ | |
59e97327 | 903 | static void gelic_net_pass_skb_up(struct gelic_descr *descr, |
589866f9 MM |
904 | struct gelic_card *card, |
905 | struct net_device *netdev) | |
906 | ||
02c18891 | 907 | { |
589866f9 | 908 | struct sk_buff *skb = descr->skb; |
02c18891 MM |
909 | u32 data_status, data_error; |
910 | ||
100e1d89 MM |
911 | data_status = be32_to_cpu(descr->data_status); |
912 | data_error = be32_to_cpu(descr->data_error); | |
02c18891 | 913 | /* unmap skb buffer */ |
589866f9 MM |
914 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), |
915 | GELIC_NET_MAX_MTU, | |
02c18891 MM |
916 | DMA_FROM_DEVICE); |
917 | ||
589866f9 | 918 | skb_put(skb, be32_to_cpu(descr->valid_size)? |
100e1d89 MM |
919 | be32_to_cpu(descr->valid_size) : |
920 | be32_to_cpu(descr->result_size)); | |
02c18891 MM |
921 | if (!descr->valid_size) |
922 | dev_info(ctodev(card), "buffer full %x %x %x\n", | |
100e1d89 MM |
923 | be32_to_cpu(descr->result_size), |
924 | be32_to_cpu(descr->buf_size), | |
925 | be32_to_cpu(descr->dmac_cmd_status)); | |
02c18891 MM |
926 | |
927 | descr->skb = NULL; | |
928 | /* | |
929 | * the card put 2 bytes vlan tag in front | |
930 | * of the ethernet frame | |
931 | */ | |
932 | skb_pull(skb, 2); | |
933 | skb->protocol = eth_type_trans(skb, netdev); | |
934 | ||
935 | /* checksum offload */ | |
936 | if (card->rx_csum) { | |
59e97327 MM |
937 | if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) && |
938 | (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK))) | |
02c18891 MM |
939 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
940 | else | |
941 | skb->ip_summed = CHECKSUM_NONE; | |
942 | } else | |
943 | skb->ip_summed = CHECKSUM_NONE; | |
944 | ||
945 | /* update netdevice statistics */ | |
589866f9 MM |
946 | netdev->stats.rx_packets++; |
947 | netdev->stats.rx_bytes += skb->len; | |
02c18891 MM |
948 | |
949 | /* pass skb up to stack */ | |
950 | netif_receive_skb(skb); | |
951 | } | |
952 | ||
953 | /** | |
59e97327 | 954 | * gelic_card_decode_one_descr - processes an rx descriptor |
02c18891 MM |
955 | * @card: card structure |
956 | * | |
957 | * returns 1 if a packet has been sent to the stack, otherwise 0 | |
958 | * | |
959 | * processes an rx descriptor by iommu-unmapping the data buffer and passing | |
960 | * the packet up to the stack | |
961 | */ | |
59e97327 | 962 | static int gelic_card_decode_one_descr(struct gelic_card *card) |
02c18891 | 963 | { |
59e97327 MM |
964 | enum gelic_descr_dma_status status; |
965 | struct gelic_descr_chain *chain = &card->rx_chain; | |
589866f9 MM |
966 | struct gelic_descr *descr = chain->head; |
967 | struct net_device *netdev = NULL; | |
02c18891 MM |
968 | int dmac_chain_ended; |
969 | ||
59e97327 | 970 | status = gelic_descr_get_status(descr); |
02c18891 MM |
971 | /* is this descriptor terminated with next_descr == NULL? */ |
972 | dmac_chain_ended = | |
100e1d89 | 973 | be32_to_cpu(descr->dmac_cmd_status) & |
59e97327 | 974 | GELIC_DESCR_RX_DMA_CHAIN_END; |
02c18891 | 975 | |
59e97327 | 976 | if (status == GELIC_DESCR_DMA_CARDOWNED) |
02c18891 MM |
977 | return 0; |
978 | ||
59e97327 | 979 | if (status == GELIC_DESCR_DMA_NOT_IN_USE) { |
02c18891 MM |
980 | dev_dbg(ctodev(card), "dormant descr? %p\n", descr); |
981 | return 0; | |
982 | } | |
983 | ||
589866f9 MM |
984 | /* netdevice select */ |
985 | if (card->vlan_required) { | |
986 | unsigned int i; | |
987 | u16 vid; | |
988 | vid = *(u16 *)(descr->skb->data) & VLAN_VID_MASK; | |
989 | for (i = 0; i < GELIC_PORT_MAX; i++) { | |
990 | if (card->vlan[i].rx == vid) { | |
991 | netdev = card->netdev[i]; | |
992 | break; | |
993 | } | |
994 | }; | |
995 | if (GELIC_PORT_MAX <= i) { | |
996 | pr_info("%s: unknown packet vid=%x\n", __func__, vid); | |
997 | goto refill; | |
998 | } | |
999 | } else | |
1000 | netdev = card->netdev[GELIC_PORT_ETHERNET]; | |
1001 | ||
59e97327 MM |
1002 | if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) || |
1003 | (status == GELIC_DESCR_DMA_PROTECTION_ERROR) || | |
1004 | (status == GELIC_DESCR_DMA_FORCE_END)) { | |
02c18891 MM |
1005 | dev_info(ctodev(card), "dropping RX descriptor with state %x\n", |
1006 | status); | |
589866f9 | 1007 | netdev->stats.rx_dropped++; |
02c18891 MM |
1008 | goto refill; |
1009 | } | |
1010 | ||
59e97327 | 1011 | if (status == GELIC_DESCR_DMA_BUFFER_FULL) { |
fe6d3a40 MM |
1012 | /* |
1013 | * Buffer full would occur if and only if | |
1014 | * the frame length was longer than the size of this | |
1015 | * descriptor's buffer. If the frame length was equal | |
1016 | * to or shorter than buffer'size, FRAME_END condition | |
1017 | * would occur. | |
1018 | * Anyway this frame was longer than the MTU, | |
1019 | * just drop it. | |
1020 | */ | |
1021 | dev_info(ctodev(card), "overlength frame\n"); | |
1022 | goto refill; | |
1023 | } | |
1024 | /* | |
1025 | * descriptoers any other than FRAME_END here should | |
1026 | * be treated as error. | |
1027 | */ | |
59e97327 | 1028 | if (status != GELIC_DESCR_DMA_FRAME_END) { |
02c18891 MM |
1029 | dev_dbg(ctodev(card), "RX descriptor with state %x\n", |
1030 | status); | |
1031 | goto refill; | |
1032 | } | |
1033 | ||
1034 | /* ok, we've got a packet in descr */ | |
589866f9 | 1035 | gelic_net_pass_skb_up(descr, card, netdev); |
02c18891 | 1036 | refill: |
fe6d3a40 MM |
1037 | /* |
1038 | * So that always DMAC can see the end | |
1039 | * of the descriptor chain to avoid | |
1040 | * from unwanted DMAC overrun. | |
1041 | */ | |
1042 | descr->next_descr_addr = 0; | |
02c18891 MM |
1043 | |
1044 | /* change the descriptor state: */ | |
59e97327 | 1045 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 | 1046 | |
fe6d3a40 MM |
1047 | /* |
1048 | * this call can fail, but for now, just leave this | |
1049 | * decriptor without skb | |
02c18891 | 1050 | */ |
59e97327 | 1051 | gelic_descr_prepare_rx(card, descr); |
fe6d3a40 | 1052 | |
589866f9 MM |
1053 | chain->tail = descr; |
1054 | chain->head = descr->next; | |
fe6d3a40 MM |
1055 | |
1056 | /* | |
1057 | * Set this descriptor the end of the chain. | |
1058 | */ | |
100e1d89 | 1059 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
02c18891 | 1060 | |
fe6d3a40 MM |
1061 | /* |
1062 | * If dmac chain was met, DMAC stopped. | |
1063 | * thus re-enable it | |
1064 | */ | |
02c18891 | 1065 | if (dmac_chain_ended) { |
583aae10 MM |
1066 | card->rx_dma_restart_required = 1; |
1067 | dev_dbg(ctodev(card), "reenable rx dma scheduled\n"); | |
02c18891 MM |
1068 | } |
1069 | ||
1070 | return 1; | |
1071 | } | |
1072 | ||
1073 | /** | |
1074 | * gelic_net_poll - NAPI poll function called by the stack to return packets | |
589866f9 | 1075 | * @napi: napi structure |
02c18891 MM |
1076 | * @budget: number of packets we can pass to the stack at most |
1077 | * | |
589866f9 | 1078 | * returns the number of the processed packets |
02c18891 MM |
1079 | * |
1080 | */ | |
bea3348e | 1081 | static int gelic_net_poll(struct napi_struct *napi, int budget) |
02c18891 | 1082 | { |
59e97327 | 1083 | struct gelic_card *card = container_of(napi, struct gelic_card, napi); |
bea3348e | 1084 | int packets_done = 0; |
02c18891 | 1085 | |
bea3348e | 1086 | while (packets_done < budget) { |
59e97327 | 1087 | if (!gelic_card_decode_one_descr(card)) |
02c18891 | 1088 | break; |
bea3348e SH |
1089 | |
1090 | packets_done++; | |
02c18891 | 1091 | } |
bea3348e SH |
1092 | |
1093 | if (packets_done < budget) { | |
589866f9 | 1094 | napi_complete(napi); |
59e97327 | 1095 | gelic_card_rx_irq_on(card); |
bea3348e SH |
1096 | } |
1097 | return packets_done; | |
02c18891 | 1098 | } |
02c18891 MM |
1099 | /** |
1100 | * gelic_net_change_mtu - changes the MTU of an interface | |
1101 | * @netdev: interface device structure | |
1102 | * @new_mtu: new MTU value | |
1103 | * | |
1104 | * returns 0 on success, <0 on failure | |
1105 | */ | |
589866f9 | 1106 | int gelic_net_change_mtu(struct net_device *netdev, int new_mtu) |
02c18891 MM |
1107 | { |
1108 | /* no need to re-alloc skbs or so -- the max mtu is about 2.3k | |
1109 | * and mtu is outbound only anyway */ | |
1110 | if ((new_mtu < GELIC_NET_MIN_MTU) || | |
1111 | (new_mtu > GELIC_NET_MAX_MTU)) { | |
1112 | return -EINVAL; | |
1113 | } | |
1114 | netdev->mtu = new_mtu; | |
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | /** | |
59e97327 | 1119 | * gelic_card_interrupt - event handler for gelic_net |
02c18891 | 1120 | */ |
59e97327 | 1121 | static irqreturn_t gelic_card_interrupt(int irq, void *ptr) |
02c18891 MM |
1122 | { |
1123 | unsigned long flags; | |
589866f9 | 1124 | struct gelic_card *card = ptr; |
02c18891 MM |
1125 | u64 status; |
1126 | ||
1127 | status = card->irq_status; | |
1128 | ||
1129 | if (!status) | |
1130 | return IRQ_NONE; | |
1131 | ||
589866f9 MM |
1132 | status &= card->irq_mask; |
1133 | ||
583aae10 MM |
1134 | if (card->rx_dma_restart_required) { |
1135 | card->rx_dma_restart_required = 0; | |
59e97327 | 1136 | gelic_card_enable_rxdmac(card); |
583aae10 MM |
1137 | } |
1138 | ||
59e97327 MM |
1139 | if (status & GELIC_CARD_RXINT) { |
1140 | gelic_card_rx_irq_off(card); | |
589866f9 | 1141 | napi_schedule(&card->napi); |
02c18891 MM |
1142 | } |
1143 | ||
59e97327 | 1144 | if (status & GELIC_CARD_TXINT) { |
589866f9 | 1145 | spin_lock_irqsave(&card->tx_lock, flags); |
02c18891 | 1146 | card->tx_dma_progress = 0; |
59e97327 | 1147 | gelic_card_release_tx_chain(card, 0); |
48544cc2 | 1148 | /* kick outstanding tx descriptor if any */ |
59e97327 | 1149 | gelic_card_kick_txdma(card, card->tx_chain.tail); |
589866f9 | 1150 | spin_unlock_irqrestore(&card->tx_lock, flags); |
02c18891 | 1151 | } |
01fed4c2 MM |
1152 | |
1153 | /* ether port status changed */ | |
1154 | if (status & GELIC_CARD_PORT_STATUS_CHANGED) | |
1155 | gelic_card_get_ether_port_status(card, 1); | |
589866f9 | 1156 | |
02c18891 MM |
1157 | return IRQ_HANDLED; |
1158 | } | |
1159 | ||
1160 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1161 | /** | |
1162 | * gelic_net_poll_controller - artificial interrupt for netconsole etc. | |
1163 | * @netdev: interface device structure | |
1164 | * | |
1165 | * see Documentation/networking/netconsole.txt | |
1166 | */ | |
589866f9 | 1167 | void gelic_net_poll_controller(struct net_device *netdev) |
02c18891 | 1168 | { |
589866f9 | 1169 | struct gelic_card *card = netdev_card(netdev); |
02c18891 | 1170 | |
59e97327 MM |
1171 | gelic_card_set_irq_mask(card, 0); |
1172 | gelic_card_interrupt(netdev->irq, netdev); | |
589866f9 | 1173 | gelic_card_set_irq_mask(card, card->irq_mask); |
02c18891 MM |
1174 | } |
1175 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1176 | ||
02c18891 MM |
1177 | /** |
1178 | * gelic_net_open - called upon ifonfig up | |
1179 | * @netdev: interface device structure | |
1180 | * | |
1181 | * returns 0 on success, <0 on failure | |
1182 | * | |
1183 | * gelic_net_open allocates all the descriptors and memory needed for | |
1184 | * operation, sets up multicast list and enables interrupts | |
1185 | */ | |
589866f9 | 1186 | int gelic_net_open(struct net_device *netdev) |
02c18891 | 1187 | { |
589866f9 | 1188 | struct gelic_card *card = netdev_card(netdev); |
02c18891 | 1189 | |
589866f9 | 1190 | dev_dbg(ctodev(card), " -> %s %p\n", __func__, netdev); |
02c18891 | 1191 | |
589866f9 | 1192 | gelic_card_up(card); |
02c18891 MM |
1193 | |
1194 | netif_start_queue(netdev); | |
01fed4c2 | 1195 | gelic_card_get_ether_port_status(card, 1); |
02c18891 | 1196 | |
589866f9 | 1197 | dev_dbg(ctodev(card), " <- %s\n", __func__); |
02c18891 | 1198 | return 0; |
02c18891 MM |
1199 | } |
1200 | ||
589866f9 MM |
1201 | void gelic_net_get_drvinfo(struct net_device *netdev, |
1202 | struct ethtool_drvinfo *info) | |
02c18891 MM |
1203 | { |
1204 | strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); | |
1205 | strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1); | |
1206 | } | |
1207 | ||
59e97327 MM |
1208 | static int gelic_ether_get_settings(struct net_device *netdev, |
1209 | struct ethtool_cmd *cmd) | |
02c18891 | 1210 | { |
589866f9 | 1211 | struct gelic_card *card = netdev_card(netdev); |
02c18891 | 1212 | |
01fed4c2 MM |
1213 | gelic_card_get_ether_port_status(card, 0); |
1214 | ||
1215 | if (card->ether_port_status & GELIC_LV1_ETHER_FULL_DUPLEX) | |
1216 | cmd->duplex = DUPLEX_FULL; | |
1217 | else | |
1218 | cmd->duplex = DUPLEX_HALF; | |
1219 | ||
1220 | switch (card->ether_port_status & GELIC_LV1_ETHER_SPEED_MASK) { | |
1221 | case GELIC_LV1_ETHER_SPEED_10: | |
1222 | cmd->speed = SPEED_10; | |
1223 | break; | |
1224 | case GELIC_LV1_ETHER_SPEED_100: | |
1225 | cmd->speed = SPEED_100; | |
1226 | break; | |
1227 | case GELIC_LV1_ETHER_SPEED_1000: | |
1228 | cmd->speed = SPEED_1000; | |
1229 | break; | |
1230 | default: | |
1231 | pr_info("%s: speed unknown\n", __func__); | |
1232 | cmd->speed = SPEED_10; | |
1233 | break; | |
02c18891 | 1234 | } |
01fed4c2 | 1235 | |
02c18891 MM |
1236 | cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg | |
1237 | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
1238 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
1239 | SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; | |
1240 | cmd->advertising = cmd->supported; | |
02c18891 MM |
1241 | cmd->autoneg = AUTONEG_ENABLE; /* always enabled */ |
1242 | cmd->port = PORT_TP; | |
1243 | ||
1244 | return 0; | |
1245 | } | |
1246 | ||
589866f9 | 1247 | u32 gelic_net_get_rx_csum(struct net_device *netdev) |
02c18891 | 1248 | { |
589866f9 | 1249 | struct gelic_card *card = netdev_card(netdev); |
02c18891 MM |
1250 | |
1251 | return card->rx_csum; | |
1252 | } | |
1253 | ||
589866f9 | 1254 | int gelic_net_set_rx_csum(struct net_device *netdev, u32 data) |
02c18891 | 1255 | { |
589866f9 | 1256 | struct gelic_card *card = netdev_card(netdev); |
02c18891 MM |
1257 | |
1258 | card->rx_csum = data; | |
1259 | return 0; | |
1260 | } | |
1261 | ||
589866f9 | 1262 | static struct ethtool_ops gelic_ether_ethtool_ops = { |
02c18891 | 1263 | .get_drvinfo = gelic_net_get_drvinfo, |
59e97327 | 1264 | .get_settings = gelic_ether_get_settings, |
7bc56b92 | 1265 | .get_link = ethtool_op_get_link, |
7bc56b92 MM |
1266 | .get_tx_csum = ethtool_op_get_tx_csum, |
1267 | .set_tx_csum = ethtool_op_set_tx_csum, | |
02c18891 MM |
1268 | .get_rx_csum = gelic_net_get_rx_csum, |
1269 | .set_rx_csum = gelic_net_set_rx_csum, | |
1270 | }; | |
02c18891 MM |
1271 | |
1272 | /** | |
1273 | * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout | |
1274 | * function (to be called not under interrupt status) | |
1275 | * @work: work is context of tx timout task | |
1276 | * | |
1277 | * called as task when tx hangs, resets interface (if interface is up) | |
1278 | */ | |
1279 | static void gelic_net_tx_timeout_task(struct work_struct *work) | |
1280 | { | |
59e97327 MM |
1281 | struct gelic_card *card = |
1282 | container_of(work, struct gelic_card, tx_timeout_task); | |
589866f9 | 1283 | struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET]; |
02c18891 MM |
1284 | |
1285 | dev_info(ctodev(card), "%s:Timed out. Restarting... \n", __func__); | |
1286 | ||
1287 | if (!(netdev->flags & IFF_UP)) | |
1288 | goto out; | |
1289 | ||
1290 | netif_device_detach(netdev); | |
1291 | gelic_net_stop(netdev); | |
1292 | ||
1293 | gelic_net_open(netdev); | |
1294 | netif_device_attach(netdev); | |
1295 | ||
1296 | out: | |
1297 | atomic_dec(&card->tx_timeout_task_counter); | |
1298 | } | |
1299 | ||
1300 | /** | |
1301 | * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in. | |
1302 | * @netdev: interface device structure | |
1303 | * | |
1304 | * called, if tx hangs. Schedules a task that resets the interface | |
1305 | */ | |
589866f9 | 1306 | void gelic_net_tx_timeout(struct net_device *netdev) |
02c18891 | 1307 | { |
59e97327 | 1308 | struct gelic_card *card; |
02c18891 | 1309 | |
589866f9 | 1310 | card = netdev_card(netdev); |
02c18891 MM |
1311 | atomic_inc(&card->tx_timeout_task_counter); |
1312 | if (netdev->flags & IFF_UP) | |
1313 | schedule_work(&card->tx_timeout_task); | |
1314 | else | |
1315 | atomic_dec(&card->tx_timeout_task_counter); | |
1316 | } | |
1317 | ||
1318 | /** | |
59e97327 | 1319 | * gelic_ether_setup_netdev_ops - initialization of net_device operations |
02c18891 MM |
1320 | * @netdev: net_device structure |
1321 | * | |
1322 | * fills out function pointers in the net_device structure | |
1323 | */ | |
589866f9 MM |
1324 | static void gelic_ether_setup_netdev_ops(struct net_device *netdev, |
1325 | struct napi_struct *napi) | |
02c18891 MM |
1326 | { |
1327 | netdev->open = &gelic_net_open; | |
1328 | netdev->stop = &gelic_net_stop; | |
1329 | netdev->hard_start_xmit = &gelic_net_xmit; | |
02c18891 MM |
1330 | netdev->set_multicast_list = &gelic_net_set_multi; |
1331 | netdev->change_mtu = &gelic_net_change_mtu; | |
1332 | /* tx watchdog */ | |
1333 | netdev->tx_timeout = &gelic_net_tx_timeout; | |
1334 | netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT; | |
589866f9 MM |
1335 | /* NAPI */ |
1336 | netif_napi_add(netdev, napi, | |
1337 | gelic_net_poll, GELIC_NET_NAPI_WEIGHT); | |
1338 | netdev->ethtool_ops = &gelic_ether_ethtool_ops; | |
1339 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1340 | netdev->poll_controller = gelic_net_poll_controller; | |
1341 | #endif | |
02c18891 MM |
1342 | } |
1343 | ||
1344 | /** | |
589866f9 MM |
1345 | * gelic_ether_setup_netdev - initialization of net_device |
1346 | * @netdev: net_device structure | |
02c18891 MM |
1347 | * @card: card structure |
1348 | * | |
1349 | * Returns 0 on success or <0 on failure | |
1350 | * | |
589866f9 MM |
1351 | * gelic_ether_setup_netdev initializes the net_device structure |
1352 | * and register it. | |
02c18891 | 1353 | **/ |
589866f9 | 1354 | int gelic_net_setup_netdev(struct net_device *netdev, struct gelic_card *card) |
02c18891 | 1355 | { |
02c18891 MM |
1356 | int status; |
1357 | u64 v1, v2; | |
0795af57 | 1358 | DECLARE_MAC_BUF(mac); |
02c18891 | 1359 | |
02c18891 MM |
1360 | netdev->features = NETIF_F_IP_CSUM; |
1361 | ||
1362 | status = lv1_net_control(bus_id(card), dev_id(card), | |
59e97327 | 1363 | GELIC_LV1_GET_MAC_ADDRESS, |
02c18891 | 1364 | 0, 0, 0, &v1, &v2); |
589866f9 | 1365 | v1 <<= 16; |
02c18891 MM |
1366 | if (status || !is_valid_ether_addr((u8 *)&v1)) { |
1367 | dev_info(ctodev(card), | |
1368 | "%s:lv1_net_control GET_MAC_ADDR failed %d\n", | |
1369 | __func__, status); | |
1370 | return -EINVAL; | |
1371 | } | |
589866f9 | 1372 | memcpy(netdev->dev_addr, &v1, ETH_ALEN); |
173261ed | 1373 | |
589866f9 | 1374 | if (card->vlan_required) { |
173261ed | 1375 | netdev->hard_header_len += VLAN_HLEN; |
589866f9 MM |
1376 | /* |
1377 | * As vlan is internally used, | |
1378 | * we can not receive vlan packets | |
1379 | */ | |
1380 | netdev->features |= NETIF_F_VLAN_CHALLENGED; | |
173261ed | 1381 | } |
02c18891 MM |
1382 | |
1383 | status = register_netdev(netdev); | |
1384 | if (status) { | |
589866f9 MM |
1385 | dev_err(ctodev(card), "%s:Couldn't register %s %d\n", |
1386 | __func__, netdev->name, status); | |
02c18891 MM |
1387 | return status; |
1388 | } | |
589866f9 MM |
1389 | dev_info(ctodev(card), "%s: MAC addr %s\n", |
1390 | netdev->name, | |
1391 | print_mac(mac, netdev->dev_addr)); | |
02c18891 MM |
1392 | |
1393 | return 0; | |
1394 | } | |
1395 | ||
1396 | /** | |
59e97327 | 1397 | * gelic_alloc_card_net - allocates net_device and card structure |
02c18891 MM |
1398 | * |
1399 | * returns the card structure or NULL in case of errors | |
1400 | * | |
1401 | * the card and net_device structures are linked to each other | |
1402 | */ | |
589866f9 MM |
1403 | #define GELIC_ALIGN (32) |
1404 | static struct gelic_card *gelic_alloc_card_net(struct net_device **netdev) | |
02c18891 | 1405 | { |
59e97327 | 1406 | struct gelic_card *card; |
589866f9 MM |
1407 | struct gelic_port *port; |
1408 | void *p; | |
02c18891 | 1409 | size_t alloc_size; |
02c18891 | 1410 | /* |
589866f9 MM |
1411 | * gelic requires dma descriptor is 32 bytes aligned and |
1412 | * the hypervisor requires irq_status is 8 bytes aligned. | |
02c18891 | 1413 | */ |
59e97327 MM |
1414 | BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8); |
1415 | BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32); | |
589866f9 MM |
1416 | alloc_size = |
1417 | sizeof(struct gelic_card) + | |
1418 | sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS + | |
1419 | sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS + | |
1420 | GELIC_ALIGN - 1; | |
02c18891 | 1421 | |
589866f9 MM |
1422 | p = kzalloc(alloc_size, GFP_KERNEL); |
1423 | if (!p) | |
02c18891 | 1424 | return NULL; |
589866f9 MM |
1425 | card = PTR_ALIGN(p, GELIC_ALIGN); |
1426 | card->unalign = p; | |
1427 | ||
1428 | /* | |
1429 | * alloc netdev | |
1430 | */ | |
1431 | *netdev = alloc_etherdev(sizeof(struct gelic_port)); | |
1432 | if (!netdev) { | |
1433 | kfree(card->unalign); | |
1434 | return NULL; | |
1435 | } | |
1436 | port = netdev_priv(*netdev); | |
1437 | ||
1438 | /* gelic_port */ | |
1439 | port->netdev = *netdev; | |
1440 | port->card = card; | |
1441 | port->type = GELIC_PORT_ETHERNET; | |
1442 | ||
1443 | /* gelic_card */ | |
1444 | card->netdev[GELIC_PORT_ETHERNET] = *netdev; | |
02c18891 | 1445 | |
02c18891 MM |
1446 | INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task); |
1447 | init_waitqueue_head(&card->waitq); | |
1448 | atomic_set(&card->tx_timeout_task_counter, 0); | |
589866f9 MM |
1449 | init_MUTEX(&card->updown_lock); |
1450 | atomic_set(&card->users, 0); | |
02c18891 MM |
1451 | |
1452 | return card; | |
1453 | } | |
1454 | ||
589866f9 MM |
1455 | static void gelic_card_get_vlan_info(struct gelic_card *card) |
1456 | { | |
1457 | u64 v1, v2; | |
1458 | int status; | |
1459 | unsigned int i; | |
1460 | struct { | |
1461 | int tx; | |
1462 | int rx; | |
1463 | } vlan_id_ix[2] = { | |
1464 | [GELIC_PORT_ETHERNET] = { | |
1465 | .tx = GELIC_LV1_VLAN_TX_ETHERNET, | |
1466 | .rx = GELIC_LV1_VLAN_RX_ETHERNET | |
1467 | }, | |
1468 | [GELIC_PORT_WIRELESS] = { | |
1469 | .tx = GELIC_LV1_VLAN_TX_WIRELESS, | |
1470 | .rx = GELIC_LV1_VLAN_RX_WIRELESS | |
1471 | } | |
1472 | }; | |
1473 | ||
1474 | for (i = 0; i < ARRAY_SIZE(vlan_id_ix); i++) { | |
1475 | /* tx tag */ | |
1476 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1477 | GELIC_LV1_GET_VLAN_ID, | |
1478 | vlan_id_ix[i].tx, | |
1479 | 0, 0, &v1, &v2); | |
1480 | if (status || !v1) { | |
1481 | if (status != LV1_NO_ENTRY) | |
1482 | dev_dbg(ctodev(card), | |
1483 | "get vlan id for tx(%d) failed(%d)\n", | |
1484 | vlan_id_ix[i].tx, status); | |
1485 | card->vlan[i].tx = 0; | |
1486 | card->vlan[i].rx = 0; | |
1487 | continue; | |
1488 | } | |
1489 | card->vlan[i].tx = (u16)v1; | |
1490 | ||
1491 | /* rx tag */ | |
1492 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1493 | GELIC_LV1_GET_VLAN_ID, | |
1494 | vlan_id_ix[i].rx, | |
1495 | 0, 0, &v1, &v2); | |
1496 | if (status || !v1) { | |
1497 | if (status != LV1_NO_ENTRY) | |
1498 | dev_info(ctodev(card), | |
1499 | "get vlan id for rx(%d) failed(%d)\n", | |
1500 | vlan_id_ix[i].rx, status); | |
1501 | card->vlan[i].tx = 0; | |
1502 | card->vlan[i].rx = 0; | |
1503 | continue; | |
1504 | } | |
1505 | card->vlan[i].rx = (u16)v1; | |
1506 | ||
1507 | dev_dbg(ctodev(card), "vlan_id[%d] tx=%02x rx=%02x\n", | |
1508 | i, card->vlan[i].tx, card->vlan[i].rx); | |
1509 | } | |
1510 | ||
1511 | if (card->vlan[GELIC_PORT_ETHERNET].tx) { | |
1512 | BUG_ON(!card->vlan[GELIC_PORT_WIRELESS].tx); | |
1513 | card->vlan_required = 1; | |
1514 | } else | |
1515 | card->vlan_required = 0; | |
1516 | ||
1517 | /* check wirelss capable firmware */ | |
1518 | if (ps3_compare_firmware_version(1, 6, 0) < 0) { | |
1519 | card->vlan[GELIC_PORT_WIRELESS].tx = 0; | |
1520 | card->vlan[GELIC_PORT_WIRELESS].rx = 0; | |
1521 | } | |
1522 | ||
1523 | dev_info(ctodev(card), "internal vlan %s\n", | |
1524 | card->vlan_required? "enabled" : "disabled"); | |
1525 | } | |
02c18891 MM |
1526 | /** |
1527 | * ps3_gelic_driver_probe - add a device to the control of this driver | |
1528 | */ | |
59e97327 | 1529 | static int ps3_gelic_driver_probe(struct ps3_system_bus_device *dev) |
02c18891 | 1530 | { |
589866f9 MM |
1531 | struct gelic_card *card; |
1532 | struct net_device *netdev; | |
02c18891 MM |
1533 | int result; |
1534 | ||
589866f9 | 1535 | pr_debug("%s: called\n", __func__); |
02c18891 MM |
1536 | result = ps3_open_hv_device(dev); |
1537 | ||
1538 | if (result) { | |
589866f9 MM |
1539 | dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n", |
1540 | __func__); | |
02c18891 MM |
1541 | goto fail_open; |
1542 | } | |
1543 | ||
1544 | result = ps3_dma_region_create(dev->d_region); | |
1545 | ||
1546 | if (result) { | |
589866f9 MM |
1547 | dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n", |
1548 | __func__, result); | |
02c18891 MM |
1549 | BUG_ON("check region type"); |
1550 | goto fail_dma_region; | |
1551 | } | |
1552 | ||
589866f9 MM |
1553 | /* alloc card/netdevice */ |
1554 | card = gelic_alloc_card_net(&netdev); | |
1555 | if (!card) { | |
1556 | dev_info(&dev->core, "%s:gelic_net_alloc_card failed\n", | |
1557 | __func__); | |
1558 | result = -ENOMEM; | |
1559 | goto fail_alloc_card; | |
1560 | } | |
1561 | ps3_system_bus_set_driver_data(dev, card); | |
1562 | card->dev = dev; | |
1563 | ||
1564 | /* get internal vlan info */ | |
1565 | gelic_card_get_vlan_info(card); | |
1566 | ||
1567 | /* setup interrupt */ | |
02c18891 MM |
1568 | result = lv1_net_set_interrupt_status_indicator(bus_id(card), |
1569 | dev_id(card), | |
1570 | ps3_mm_phys_to_lpar(__pa(&card->irq_status)), | |
1571 | 0); | |
1572 | ||
1573 | if (result) { | |
1574 | dev_dbg(&dev->core, | |
589866f9 MM |
1575 | "%s:set_interrupt_status_indicator failed: %s\n", |
1576 | __func__, ps3_result(result)); | |
02c18891 MM |
1577 | result = -EIO; |
1578 | goto fail_status_indicator; | |
1579 | } | |
1580 | ||
589866f9 MM |
1581 | result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY, |
1582 | &card->irq); | |
1583 | ||
1584 | if (result) { | |
1585 | dev_info(ctodev(card), | |
1586 | "%s:gelic_net_open_device failed (%d)\n", | |
1587 | __func__, result); | |
1588 | result = -EPERM; | |
1589 | goto fail_alloc_irq; | |
1590 | } | |
1591 | result = request_irq(card->irq, gelic_card_interrupt, | |
1592 | IRQF_DISABLED, netdev->name, card); | |
1593 | ||
1594 | if (result) { | |
1595 | dev_info(ctodev(card), "%s:request_irq failed (%d)\n", | |
1596 | __func__, result); | |
1597 | goto fail_request_irq; | |
1598 | } | |
1599 | ||
1600 | /* setup card structure */ | |
1601 | card->irq_mask = GELIC_CARD_RXINT | GELIC_CARD_TXINT | | |
1602 | GELIC_CARD_PORT_STATUS_CHANGED; | |
1603 | card->rx_csum = GELIC_CARD_RX_CSUM_DEFAULT; | |
1604 | ||
1605 | ||
1606 | if (gelic_card_init_chain(card, &card->tx_chain, | |
1607 | card->descr, GELIC_NET_TX_DESCRIPTORS)) | |
1608 | goto fail_alloc_tx; | |
1609 | if (gelic_card_init_chain(card, &card->rx_chain, | |
1610 | card->descr + GELIC_NET_TX_DESCRIPTORS, | |
1611 | GELIC_NET_RX_DESCRIPTORS)) | |
1612 | goto fail_alloc_rx; | |
1613 | ||
1614 | /* head of chain */ | |
1615 | card->tx_top = card->tx_chain.head; | |
1616 | card->rx_top = card->rx_chain.head; | |
1617 | dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n", | |
1618 | card->rx_top, card->tx_top, sizeof(struct gelic_descr), | |
1619 | GELIC_NET_RX_DESCRIPTORS); | |
1620 | /* allocate rx skbs */ | |
1621 | if (gelic_card_alloc_rx_skbs(card)) | |
1622 | goto fail_alloc_skbs; | |
1623 | ||
1624 | spin_lock_init(&card->tx_lock); | |
1625 | card->tx_dma_progress = 0; | |
02c18891 | 1626 | |
589866f9 MM |
1627 | /* setup net_device structure */ |
1628 | netdev->irq = card->irq; | |
1629 | SET_NETDEV_DEV(netdev, &card->dev->core); | |
1630 | gelic_ether_setup_netdev_ops(netdev, &card->napi); | |
1631 | result = gelic_net_setup_netdev(netdev, card); | |
02c18891 | 1632 | if (result) { |
589866f9 MM |
1633 | dev_dbg(&dev->core, "%s: setup_netdev failed %d", |
1634 | __func__, result); | |
02c18891 MM |
1635 | goto fail_setup_netdev; |
1636 | } | |
1637 | ||
589866f9 | 1638 | pr_debug("%s: done\n", __func__); |
02c18891 MM |
1639 | return 0; |
1640 | ||
1641 | fail_setup_netdev: | |
589866f9 MM |
1642 | fail_alloc_skbs: |
1643 | gelic_card_free_chain(card, card->rx_chain.head); | |
1644 | fail_alloc_rx: | |
1645 | gelic_card_free_chain(card, card->tx_chain.head); | |
1646 | fail_alloc_tx: | |
1647 | free_irq(card->irq, card); | |
1648 | netdev->irq = NO_IRQ; | |
1649 | fail_request_irq: | |
1650 | ps3_sb_event_receive_port_destroy(dev, card->irq); | |
1651 | fail_alloc_irq: | |
02c18891 | 1652 | lv1_net_set_interrupt_status_indicator(bus_id(card), |
589866f9 MM |
1653 | bus_id(card), |
1654 | 0, 0); | |
02c18891 | 1655 | fail_status_indicator: |
589866f9 MM |
1656 | ps3_system_bus_set_driver_data(dev, NULL); |
1657 | kfree(netdev_card(netdev)->unalign); | |
1658 | free_netdev(netdev); | |
1659 | fail_alloc_card: | |
02c18891 MM |
1660 | ps3_dma_region_free(dev->d_region); |
1661 | fail_dma_region: | |
1662 | ps3_close_hv_device(dev); | |
1663 | fail_open: | |
02c18891 MM |
1664 | return result; |
1665 | } | |
1666 | ||
1667 | /** | |
1668 | * ps3_gelic_driver_remove - remove a device from the control of this driver | |
1669 | */ | |
1670 | ||
59e97327 | 1671 | static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev) |
02c18891 | 1672 | { |
59e97327 | 1673 | struct gelic_card *card = ps3_system_bus_get_driver_data(dev); |
589866f9 MM |
1674 | struct net_device *netdev0; |
1675 | pr_debug("%s: called\n", __func__); | |
1676 | ||
1677 | /* stop interrupt */ | |
1678 | gelic_card_set_irq_mask(card, 0); | |
1679 | ||
1680 | /* turn off DMA, force end */ | |
1681 | gelic_card_disable_rxdmac(card); | |
1682 | gelic_card_disable_txdmac(card); | |
1683 | ||
1684 | /* release chains */ | |
1685 | gelic_card_release_tx_chain(card, 1); | |
1686 | gelic_card_release_rx_chain(card); | |
1687 | ||
1688 | gelic_card_free_chain(card, card->tx_top); | |
1689 | gelic_card_free_chain(card, card->rx_top); | |
1690 | ||
1691 | netdev0 = card->netdev[GELIC_PORT_ETHERNET]; | |
1692 | /* disconnect event port */ | |
1693 | free_irq(card->irq, card); | |
1694 | netdev0->irq = NO_IRQ; | |
1695 | ps3_sb_event_receive_port_destroy(card->dev, card->irq); | |
02c18891 MM |
1696 | |
1697 | wait_event(card->waitq, | |
1698 | atomic_read(&card->tx_timeout_task_counter) == 0); | |
1699 | ||
1700 | lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card), | |
1701 | 0 , 0); | |
1702 | ||
589866f9 MM |
1703 | unregister_netdev(netdev0); |
1704 | kfree(netdev_card(netdev0)->unalign); | |
1705 | free_netdev(netdev0); | |
02c18891 MM |
1706 | |
1707 | ps3_system_bus_set_driver_data(dev, NULL); | |
1708 | ||
1709 | ps3_dma_region_free(dev->d_region); | |
1710 | ||
1711 | ps3_close_hv_device(dev); | |
1712 | ||
589866f9 | 1713 | pr_debug("%s: done\n", __func__); |
02c18891 MM |
1714 | return 0; |
1715 | } | |
1716 | ||
1717 | static struct ps3_system_bus_driver ps3_gelic_driver = { | |
1718 | .match_id = PS3_MATCH_ID_GELIC, | |
1719 | .probe = ps3_gelic_driver_probe, | |
1720 | .remove = ps3_gelic_driver_remove, | |
1721 | .shutdown = ps3_gelic_driver_remove, | |
1722 | .core.name = "ps3_gelic_driver", | |
1723 | .core.owner = THIS_MODULE, | |
1724 | }; | |
1725 | ||
1726 | static int __init ps3_gelic_driver_init (void) | |
1727 | { | |
1728 | return firmware_has_feature(FW_FEATURE_PS3_LV1) | |
1729 | ? ps3_system_bus_driver_register(&ps3_gelic_driver) | |
1730 | : -ENODEV; | |
1731 | } | |
1732 | ||
1733 | static void __exit ps3_gelic_driver_exit (void) | |
1734 | { | |
1735 | ps3_system_bus_driver_unregister(&ps3_gelic_driver); | |
1736 | } | |
1737 | ||
59e97327 MM |
1738 | module_init(ps3_gelic_driver_init); |
1739 | module_exit(ps3_gelic_driver_exit); | |
02c18891 MM |
1740 | |
1741 | MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC); | |
1742 |