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032c5e82 TF |
1 | /**************************************************************************/ |
2 | /* */ | |
3 | /* IBM System i and System p Virtual NIC Device Driver */ | |
4 | /* Copyright (C) 2014 IBM Corp. */ | |
5 | /* Santiago Leon (santi_leon@yahoo.com) */ | |
6 | /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */ | |
7 | /* John Allen (jallen@linux.vnet.ibm.com) */ | |
8 | /* */ | |
9 | /* This program is free software; you can redistribute it and/or modify */ | |
10 | /* it under the terms of the GNU General Public License as published by */ | |
11 | /* the Free Software Foundation; either version 2 of the License, or */ | |
12 | /* (at your option) any later version. */ | |
13 | /* */ | |
14 | /* This program is distributed in the hope that it will be useful, */ | |
15 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ | |
16 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ | |
17 | /* GNU General Public License for more details. */ | |
18 | /* */ | |
19 | /* You should have received a copy of the GNU General Public License */ | |
20 | /* along with this program. */ | |
21 | /* */ | |
22 | /* This module contains the implementation of a virtual ethernet device */ | |
23 | /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */ | |
24 | /* option of the RS/6000 Platform Architecture to interface with virtual */ | |
25 | /* ethernet NICs that are presented to the partition by the hypervisor. */ | |
26 | /* */ | |
27 | /* Messages are passed between the VNIC driver and the VNIC server using */ | |
28 | /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */ | |
29 | /* issue and receive commands that initiate communication with the server */ | |
30 | /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */ | |
31 | /* are used by the driver to notify the server that a packet is */ | |
32 | /* ready for transmission or that a buffer has been added to receive a */ | |
33 | /* packet. Subsequently, sCRQs are used by the server to notify the */ | |
34 | /* driver that a packet transmission has been completed or that a packet */ | |
35 | /* has been received and placed in a waiting buffer. */ | |
36 | /* */ | |
37 | /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */ | |
38 | /* which skbs are DMA mapped and immediately unmapped when the transmit */ | |
39 | /* or receive has been completed, the VNIC driver is required to use */ | |
40 | /* "long term mapping". This entails that large, continuous DMA mapped */ | |
41 | /* buffers are allocated on driver initialization and these buffers are */ | |
42 | /* then continuously reused to pass skbs to and from the VNIC server. */ | |
43 | /* */ | |
44 | /**************************************************************************/ | |
45 | ||
46 | #include <linux/module.h> | |
47 | #include <linux/moduleparam.h> | |
48 | #include <linux/types.h> | |
49 | #include <linux/errno.h> | |
50 | #include <linux/completion.h> | |
51 | #include <linux/ioport.h> | |
52 | #include <linux/dma-mapping.h> | |
53 | #include <linux/kernel.h> | |
54 | #include <linux/netdevice.h> | |
55 | #include <linux/etherdevice.h> | |
56 | #include <linux/skbuff.h> | |
57 | #include <linux/init.h> | |
58 | #include <linux/delay.h> | |
59 | #include <linux/mm.h> | |
60 | #include <linux/ethtool.h> | |
61 | #include <linux/proc_fs.h> | |
62 | #include <linux/in.h> | |
63 | #include <linux/ip.h> | |
ad7775dc | 64 | #include <linux/ipv6.h> |
032c5e82 TF |
65 | #include <linux/irq.h> |
66 | #include <linux/kthread.h> | |
67 | #include <linux/seq_file.h> | |
68 | #include <linux/debugfs.h> | |
69 | #include <linux/interrupt.h> | |
70 | #include <net/net_namespace.h> | |
71 | #include <asm/hvcall.h> | |
72 | #include <linux/atomic.h> | |
73 | #include <asm/vio.h> | |
74 | #include <asm/iommu.h> | |
75 | #include <linux/uaccess.h> | |
76 | #include <asm/firmware.h> | |
77 | #include <linux/seq_file.h> | |
65dc6891 | 78 | #include <linux/workqueue.h> |
032c5e82 TF |
79 | |
80 | #include "ibmvnic.h" | |
81 | ||
82 | static const char ibmvnic_driver_name[] = "ibmvnic"; | |
83 | static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver"; | |
84 | ||
85 | MODULE_AUTHOR("Santiago Leon <santi_leon@yahoo.com>"); | |
86 | MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver"); | |
87 | MODULE_LICENSE("GPL"); | |
88 | MODULE_VERSION(IBMVNIC_DRIVER_VERSION); | |
89 | ||
90 | static int ibmvnic_version = IBMVNIC_INITIAL_VERSION; | |
91 | static int ibmvnic_remove(struct vio_dev *); | |
92 | static void release_sub_crqs(struct ibmvnic_adapter *); | |
ea22d51a | 93 | static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *); |
032c5e82 TF |
94 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); |
95 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); | |
96 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); | |
97 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); | |
98 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
99 | union sub_crq *sub_crq); | |
ad7775dc | 100 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
032c5e82 TF |
101 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
102 | static int enable_scrq_irq(struct ibmvnic_adapter *, | |
103 | struct ibmvnic_sub_crq_queue *); | |
104 | static int disable_scrq_irq(struct ibmvnic_adapter *, | |
105 | struct ibmvnic_sub_crq_queue *); | |
106 | static int pending_scrq(struct ibmvnic_adapter *, | |
107 | struct ibmvnic_sub_crq_queue *); | |
108 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, | |
109 | struct ibmvnic_sub_crq_queue *); | |
110 | static int ibmvnic_poll(struct napi_struct *napi, int data); | |
111 | static void send_map_query(struct ibmvnic_adapter *adapter); | |
112 | static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); | |
113 | static void send_request_unmap(struct ibmvnic_adapter *, u8); | |
114 | ||
115 | struct ibmvnic_stat { | |
116 | char name[ETH_GSTRING_LEN]; | |
117 | int offset; | |
118 | }; | |
119 | ||
120 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ | |
121 | offsetof(struct ibmvnic_statistics, stat)) | |
122 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) | |
123 | ||
124 | static const struct ibmvnic_stat ibmvnic_stats[] = { | |
125 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, | |
126 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, | |
127 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, | |
128 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, | |
129 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, | |
130 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, | |
131 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, | |
132 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, | |
133 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, | |
134 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, | |
135 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, | |
136 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, | |
137 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, | |
138 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, | |
139 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, | |
140 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, | |
141 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, | |
142 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, | |
143 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, | |
144 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, | |
145 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, | |
146 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, | |
147 | }; | |
148 | ||
149 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, | |
150 | unsigned long length, unsigned long *number, | |
151 | unsigned long *irq) | |
152 | { | |
153 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
154 | long rc; | |
155 | ||
156 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); | |
157 | *number = retbuf[0]; | |
158 | *irq = retbuf[1]; | |
159 | ||
160 | return rc; | |
161 | } | |
162 | ||
163 | /* net_device_ops functions */ | |
164 | ||
165 | static void init_rx_pool(struct ibmvnic_adapter *adapter, | |
166 | struct ibmvnic_rx_pool *rx_pool, int num, int index, | |
167 | int buff_size, int active) | |
168 | { | |
169 | netdev_dbg(adapter->netdev, | |
170 | "Initializing rx_pool %d, %d buffs, %d bytes each\n", | |
171 | index, num, buff_size); | |
172 | rx_pool->size = num; | |
173 | rx_pool->index = index; | |
174 | rx_pool->buff_size = buff_size; | |
175 | rx_pool->active = active; | |
176 | } | |
177 | ||
178 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, | |
179 | struct ibmvnic_long_term_buff *ltb, int size) | |
180 | { | |
181 | struct device *dev = &adapter->vdev->dev; | |
182 | ||
183 | ltb->size = size; | |
184 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, | |
185 | GFP_KERNEL); | |
186 | ||
187 | if (!ltb->buff) { | |
188 | dev_err(dev, "Couldn't alloc long term buffer\n"); | |
189 | return -ENOMEM; | |
190 | } | |
191 | ltb->map_id = adapter->map_id; | |
192 | adapter->map_id++; | |
193 | send_request_map(adapter, ltb->addr, | |
194 | ltb->size, ltb->map_id); | |
195 | init_completion(&adapter->fw_done); | |
196 | wait_for_completion(&adapter->fw_done); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, | |
201 | struct ibmvnic_long_term_buff *ltb) | |
202 | { | |
203 | struct device *dev = &adapter->vdev->dev; | |
204 | ||
205 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); | |
dfad09a6 TF |
206 | if (!adapter->failover) |
207 | send_request_unmap(adapter, ltb->map_id); | |
032c5e82 TF |
208 | } |
209 | ||
210 | static int alloc_rx_pool(struct ibmvnic_adapter *adapter, | |
211 | struct ibmvnic_rx_pool *pool) | |
212 | { | |
213 | struct device *dev = &adapter->vdev->dev; | |
214 | int i; | |
215 | ||
216 | pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL); | |
217 | if (!pool->free_map) | |
218 | return -ENOMEM; | |
219 | ||
220 | pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff), | |
221 | GFP_KERNEL); | |
222 | ||
223 | if (!pool->rx_buff) { | |
224 | dev_err(dev, "Couldn't alloc rx buffers\n"); | |
225 | kfree(pool->free_map); | |
226 | return -ENOMEM; | |
227 | } | |
228 | ||
229 | if (alloc_long_term_buff(adapter, &pool->long_term_buff, | |
230 | pool->size * pool->buff_size)) { | |
231 | kfree(pool->free_map); | |
232 | kfree(pool->rx_buff); | |
233 | return -ENOMEM; | |
234 | } | |
235 | ||
236 | for (i = 0; i < pool->size; ++i) | |
237 | pool->free_map[i] = i; | |
238 | ||
239 | atomic_set(&pool->available, 0); | |
240 | pool->next_alloc = 0; | |
241 | pool->next_free = 0; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, | |
247 | struct ibmvnic_rx_pool *pool) | |
248 | { | |
249 | int count = pool->size - atomic_read(&pool->available); | |
250 | struct device *dev = &adapter->vdev->dev; | |
251 | int buffers_added = 0; | |
252 | unsigned long lpar_rc; | |
253 | union sub_crq sub_crq; | |
254 | struct sk_buff *skb; | |
255 | unsigned int offset; | |
256 | dma_addr_t dma_addr; | |
257 | unsigned char *dst; | |
258 | u64 *handle_array; | |
259 | int shift = 0; | |
260 | int index; | |
261 | int i; | |
262 | ||
263 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
264 | be32_to_cpu(adapter->login_rsp_buf-> | |
265 | off_rxadd_subcrqs)); | |
266 | ||
267 | for (i = 0; i < count; ++i) { | |
268 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
269 | if (!skb) { | |
270 | dev_err(dev, "Couldn't replenish rx buff\n"); | |
271 | adapter->replenish_no_mem++; | |
272 | break; | |
273 | } | |
274 | ||
275 | index = pool->free_map[pool->next_free]; | |
276 | ||
277 | if (pool->rx_buff[index].skb) | |
278 | dev_err(dev, "Inconsistent free_map!\n"); | |
279 | ||
280 | /* Copy the skb to the long term mapped DMA buffer */ | |
281 | offset = index * pool->buff_size; | |
282 | dst = pool->long_term_buff.buff + offset; | |
283 | memset(dst, 0, pool->buff_size); | |
284 | dma_addr = pool->long_term_buff.addr + offset; | |
285 | pool->rx_buff[index].data = dst; | |
286 | ||
287 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; | |
288 | pool->rx_buff[index].dma = dma_addr; | |
289 | pool->rx_buff[index].skb = skb; | |
290 | pool->rx_buff[index].pool_index = pool->index; | |
291 | pool->rx_buff[index].size = pool->buff_size; | |
292 | ||
293 | memset(&sub_crq, 0, sizeof(sub_crq)); | |
294 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; | |
295 | sub_crq.rx_add.correlator = | |
296 | cpu_to_be64((u64)&pool->rx_buff[index]); | |
297 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); | |
298 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; | |
299 | ||
300 | /* The length field of the sCRQ is defined to be 24 bits so the | |
301 | * buffer size needs to be left shifted by a byte before it is | |
302 | * converted to big endian to prevent the last byte from being | |
303 | * truncated. | |
304 | */ | |
305 | #ifdef __LITTLE_ENDIAN__ | |
306 | shift = 8; | |
307 | #endif | |
308 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); | |
309 | ||
310 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], | |
311 | &sub_crq); | |
312 | if (lpar_rc != H_SUCCESS) | |
313 | goto failure; | |
314 | ||
315 | buffers_added++; | |
316 | adapter->replenish_add_buff_success++; | |
317 | pool->next_free = (pool->next_free + 1) % pool->size; | |
318 | } | |
319 | atomic_add(buffers_added, &pool->available); | |
320 | return; | |
321 | ||
322 | failure: | |
323 | dev_info(dev, "replenish pools failure\n"); | |
324 | pool->free_map[pool->next_free] = index; | |
325 | pool->rx_buff[index].skb = NULL; | |
326 | if (!dma_mapping_error(dev, dma_addr)) | |
327 | dma_unmap_single(dev, dma_addr, pool->buff_size, | |
328 | DMA_FROM_DEVICE); | |
329 | ||
330 | dev_kfree_skb_any(skb); | |
331 | adapter->replenish_add_buff_failure++; | |
332 | atomic_add(buffers_added, &pool->available); | |
333 | } | |
334 | ||
335 | static void replenish_pools(struct ibmvnic_adapter *adapter) | |
336 | { | |
337 | int i; | |
338 | ||
339 | if (adapter->migrated) | |
340 | return; | |
341 | ||
342 | adapter->replenish_task_cycles++; | |
343 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
344 | i++) { | |
345 | if (adapter->rx_pool[i].active) | |
346 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); | |
347 | } | |
348 | } | |
349 | ||
350 | static void free_rx_pool(struct ibmvnic_adapter *adapter, | |
351 | struct ibmvnic_rx_pool *pool) | |
352 | { | |
353 | int i; | |
354 | ||
355 | kfree(pool->free_map); | |
356 | pool->free_map = NULL; | |
357 | ||
358 | if (!pool->rx_buff) | |
359 | return; | |
360 | ||
361 | for (i = 0; i < pool->size; i++) { | |
362 | if (pool->rx_buff[i].skb) { | |
363 | dev_kfree_skb_any(pool->rx_buff[i].skb); | |
364 | pool->rx_buff[i].skb = NULL; | |
365 | } | |
366 | } | |
367 | kfree(pool->rx_buff); | |
368 | pool->rx_buff = NULL; | |
369 | } | |
370 | ||
371 | static int ibmvnic_open(struct net_device *netdev) | |
372 | { | |
373 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
374 | struct device *dev = &adapter->vdev->dev; | |
375 | struct ibmvnic_tx_pool *tx_pool; | |
376 | union ibmvnic_crq crq; | |
377 | int rxadd_subcrqs; | |
378 | u64 *size_array; | |
379 | int tx_subcrqs; | |
380 | int i, j; | |
381 | ||
382 | rxadd_subcrqs = | |
383 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
384 | tx_subcrqs = | |
385 | be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
386 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
387 | be32_to_cpu(adapter->login_rsp_buf-> | |
388 | off_rxadd_buff_size)); | |
389 | adapter->map_id = 1; | |
390 | adapter->napi = kcalloc(adapter->req_rx_queues, | |
391 | sizeof(struct napi_struct), GFP_KERNEL); | |
392 | if (!adapter->napi) | |
393 | goto alloc_napi_failed; | |
394 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
395 | netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll, | |
396 | NAPI_POLL_WEIGHT); | |
397 | napi_enable(&adapter->napi[i]); | |
398 | } | |
399 | adapter->rx_pool = | |
400 | kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL); | |
401 | ||
402 | if (!adapter->rx_pool) | |
403 | goto rx_pool_arr_alloc_failed; | |
404 | send_map_query(adapter); | |
405 | for (i = 0; i < rxadd_subcrqs; i++) { | |
406 | init_rx_pool(adapter, &adapter->rx_pool[i], | |
407 | IBMVNIC_BUFFS_PER_POOL, i, | |
408 | be64_to_cpu(size_array[i]), 1); | |
409 | if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) { | |
410 | dev_err(dev, "Couldn't alloc rx pool\n"); | |
411 | goto rx_pool_alloc_failed; | |
412 | } | |
413 | } | |
414 | adapter->tx_pool = | |
415 | kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
416 | ||
417 | if (!adapter->tx_pool) | |
418 | goto tx_pool_arr_alloc_failed; | |
419 | for (i = 0; i < tx_subcrqs; i++) { | |
420 | tx_pool = &adapter->tx_pool[i]; | |
421 | tx_pool->tx_buff = | |
422 | kcalloc(adapter->max_tx_entries_per_subcrq, | |
423 | sizeof(struct ibmvnic_tx_buff), GFP_KERNEL); | |
424 | if (!tx_pool->tx_buff) | |
425 | goto tx_pool_alloc_failed; | |
426 | ||
427 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, | |
428 | adapter->max_tx_entries_per_subcrq * | |
429 | adapter->req_mtu)) | |
430 | goto tx_ltb_alloc_failed; | |
431 | ||
432 | tx_pool->free_map = | |
433 | kcalloc(adapter->max_tx_entries_per_subcrq, | |
434 | sizeof(int), GFP_KERNEL); | |
435 | if (!tx_pool->free_map) | |
436 | goto tx_fm_alloc_failed; | |
437 | ||
438 | for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++) | |
439 | tx_pool->free_map[j] = j; | |
440 | ||
441 | tx_pool->consumer_index = 0; | |
442 | tx_pool->producer_index = 0; | |
443 | } | |
444 | adapter->bounce_buffer_size = | |
445 | (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1; | |
446 | adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size, | |
447 | GFP_KERNEL); | |
448 | if (!adapter->bounce_buffer) | |
449 | goto bounce_alloc_failed; | |
450 | ||
451 | adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer, | |
452 | adapter->bounce_buffer_size, | |
453 | DMA_TO_DEVICE); | |
454 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { | |
455 | dev_err(dev, "Couldn't map tx bounce buffer\n"); | |
456 | goto bounce_map_failed; | |
457 | } | |
458 | replenish_pools(adapter); | |
459 | ||
460 | /* We're ready to receive frames, enable the sub-crq interrupts and | |
461 | * set the logical link state to up | |
462 | */ | |
463 | for (i = 0; i < adapter->req_rx_queues; i++) | |
464 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); | |
465 | ||
466 | for (i = 0; i < adapter->req_tx_queues; i++) | |
467 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); | |
468 | ||
469 | memset(&crq, 0, sizeof(crq)); | |
470 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
471 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
472 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP; | |
473 | ibmvnic_send_crq(adapter, &crq); | |
474 | ||
b8efb894 TF |
475 | netif_tx_start_all_queues(netdev); |
476 | ||
032c5e82 TF |
477 | return 0; |
478 | ||
479 | bounce_map_failed: | |
480 | kfree(adapter->bounce_buffer); | |
481 | bounce_alloc_failed: | |
482 | i = tx_subcrqs - 1; | |
483 | kfree(adapter->tx_pool[i].free_map); | |
484 | tx_fm_alloc_failed: | |
485 | free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff); | |
486 | tx_ltb_alloc_failed: | |
487 | kfree(adapter->tx_pool[i].tx_buff); | |
488 | tx_pool_alloc_failed: | |
489 | for (j = 0; j < i; j++) { | |
490 | kfree(adapter->tx_pool[j].tx_buff); | |
491 | free_long_term_buff(adapter, | |
492 | &adapter->tx_pool[j].long_term_buff); | |
493 | kfree(adapter->tx_pool[j].free_map); | |
494 | } | |
495 | kfree(adapter->tx_pool); | |
496 | adapter->tx_pool = NULL; | |
497 | tx_pool_arr_alloc_failed: | |
498 | i = rxadd_subcrqs; | |
499 | rx_pool_alloc_failed: | |
500 | for (j = 0; j < i; j++) { | |
501 | free_rx_pool(adapter, &adapter->rx_pool[j]); | |
502 | free_long_term_buff(adapter, | |
503 | &adapter->rx_pool[j].long_term_buff); | |
504 | } | |
505 | kfree(adapter->rx_pool); | |
506 | adapter->rx_pool = NULL; | |
507 | rx_pool_arr_alloc_failed: | |
508 | for (i = 0; i < adapter->req_rx_queues; i++) | |
509 | napi_enable(&adapter->napi[i]); | |
510 | alloc_napi_failed: | |
511 | return -ENOMEM; | |
512 | } | |
513 | ||
514 | static int ibmvnic_close(struct net_device *netdev) | |
515 | { | |
516 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
517 | struct device *dev = &adapter->vdev->dev; | |
518 | union ibmvnic_crq crq; | |
519 | int i; | |
520 | ||
521 | adapter->closing = true; | |
522 | ||
523 | for (i = 0; i < adapter->req_rx_queues; i++) | |
524 | napi_disable(&adapter->napi[i]); | |
525 | ||
dfad09a6 TF |
526 | if (!adapter->failover) |
527 | netif_tx_stop_all_queues(netdev); | |
032c5e82 TF |
528 | |
529 | if (adapter->bounce_buffer) { | |
530 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { | |
531 | dma_unmap_single(&adapter->vdev->dev, | |
532 | adapter->bounce_buffer_dma, | |
533 | adapter->bounce_buffer_size, | |
534 | DMA_BIDIRECTIONAL); | |
535 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
536 | } | |
537 | kfree(adapter->bounce_buffer); | |
538 | adapter->bounce_buffer = NULL; | |
539 | } | |
540 | ||
541 | memset(&crq, 0, sizeof(crq)); | |
542 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
543 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
544 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN; | |
545 | ibmvnic_send_crq(adapter, &crq); | |
546 | ||
547 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
548 | i++) { | |
549 | kfree(adapter->tx_pool[i].tx_buff); | |
550 | free_long_term_buff(adapter, | |
551 | &adapter->tx_pool[i].long_term_buff); | |
552 | kfree(adapter->tx_pool[i].free_map); | |
553 | } | |
554 | kfree(adapter->tx_pool); | |
555 | adapter->tx_pool = NULL; | |
556 | ||
557 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
558 | i++) { | |
559 | free_rx_pool(adapter, &adapter->rx_pool[i]); | |
560 | free_long_term_buff(adapter, | |
561 | &adapter->rx_pool[i].long_term_buff); | |
562 | } | |
563 | kfree(adapter->rx_pool); | |
564 | adapter->rx_pool = NULL; | |
565 | ||
566 | adapter->closing = false; | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
ad7775dc TF |
571 | /** |
572 | * build_hdr_data - creates L2/L3/L4 header data buffer | |
573 | * @hdr_field - bitfield determining needed headers | |
574 | * @skb - socket buffer | |
575 | * @hdr_len - array of header lengths | |
576 | * @tot_len - total length of data | |
577 | * | |
578 | * Reads hdr_field to determine which headers are needed by firmware. | |
579 | * Builds a buffer containing these headers. Saves individual header | |
580 | * lengths and total buffer length to be used to build descriptors. | |
581 | */ | |
582 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, | |
583 | int *hdr_len, u8 *hdr_data) | |
584 | { | |
585 | int len = 0; | |
586 | u8 *hdr; | |
587 | ||
588 | hdr_len[0] = sizeof(struct ethhdr); | |
589 | ||
590 | if (skb->protocol == htons(ETH_P_IP)) { | |
591 | hdr_len[1] = ip_hdr(skb)->ihl * 4; | |
592 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
593 | hdr_len[2] = tcp_hdrlen(skb); | |
594 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
595 | hdr_len[2] = sizeof(struct udphdr); | |
596 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
597 | hdr_len[1] = sizeof(struct ipv6hdr); | |
598 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
599 | hdr_len[2] = tcp_hdrlen(skb); | |
600 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
601 | hdr_len[2] = sizeof(struct udphdr); | |
602 | } | |
603 | ||
604 | memset(hdr_data, 0, 120); | |
605 | if ((hdr_field >> 6) & 1) { | |
606 | hdr = skb_mac_header(skb); | |
607 | memcpy(hdr_data, hdr, hdr_len[0]); | |
608 | len += hdr_len[0]; | |
609 | } | |
610 | ||
611 | if ((hdr_field >> 5) & 1) { | |
612 | hdr = skb_network_header(skb); | |
613 | memcpy(hdr_data + len, hdr, hdr_len[1]); | |
614 | len += hdr_len[1]; | |
615 | } | |
616 | ||
617 | if ((hdr_field >> 4) & 1) { | |
618 | hdr = skb_transport_header(skb); | |
619 | memcpy(hdr_data + len, hdr, hdr_len[2]); | |
620 | len += hdr_len[2]; | |
621 | } | |
622 | return len; | |
623 | } | |
624 | ||
625 | /** | |
626 | * create_hdr_descs - create header and header extension descriptors | |
627 | * @hdr_field - bitfield determining needed headers | |
628 | * @data - buffer containing header data | |
629 | * @len - length of data buffer | |
630 | * @hdr_len - array of individual header lengths | |
631 | * @scrq_arr - descriptor array | |
632 | * | |
633 | * Creates header and, if needed, header extension descriptors and | |
634 | * places them in a descriptor array, scrq_arr | |
635 | */ | |
636 | ||
637 | static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, | |
638 | union sub_crq *scrq_arr) | |
639 | { | |
640 | union sub_crq hdr_desc; | |
641 | int tmp_len = len; | |
642 | u8 *data, *cur; | |
643 | int tmp; | |
644 | ||
645 | while (tmp_len > 0) { | |
646 | cur = hdr_data + len - tmp_len; | |
647 | ||
648 | memset(&hdr_desc, 0, sizeof(hdr_desc)); | |
649 | if (cur != hdr_data) { | |
650 | data = hdr_desc.hdr_ext.data; | |
651 | tmp = tmp_len > 29 ? 29 : tmp_len; | |
652 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; | |
653 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; | |
654 | hdr_desc.hdr_ext.len = tmp; | |
655 | } else { | |
656 | data = hdr_desc.hdr.data; | |
657 | tmp = tmp_len > 24 ? 24 : tmp_len; | |
658 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; | |
659 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; | |
660 | hdr_desc.hdr.len = tmp; | |
661 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; | |
662 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); | |
663 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; | |
664 | hdr_desc.hdr.flag = hdr_field << 1; | |
665 | } | |
666 | memcpy(data, cur, tmp); | |
667 | tmp_len -= tmp; | |
668 | *scrq_arr = hdr_desc; | |
669 | scrq_arr++; | |
670 | } | |
671 | } | |
672 | ||
673 | /** | |
674 | * build_hdr_descs_arr - build a header descriptor array | |
675 | * @skb - socket buffer | |
676 | * @num_entries - number of descriptors to be sent | |
677 | * @subcrq - first TX descriptor | |
678 | * @hdr_field - bit field determining which headers will be sent | |
679 | * | |
680 | * This function will build a TX descriptor array with applicable | |
681 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. | |
682 | */ | |
683 | ||
684 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, | |
685 | int *num_entries, u8 hdr_field) | |
686 | { | |
687 | int hdr_len[3] = {0, 0, 0}; | |
688 | int tot_len, len; | |
689 | u8 *hdr_data = txbuff->hdr_data; | |
690 | ||
691 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, | |
692 | txbuff->hdr_data); | |
693 | len = tot_len; | |
694 | len -= 24; | |
695 | if (len > 0) | |
696 | num_entries += len % 29 ? len / 29 + 1 : len / 29; | |
697 | create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, | |
698 | txbuff->indir_arr + 1); | |
699 | } | |
700 | ||
032c5e82 TF |
701 | static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
702 | { | |
703 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
704 | int queue_num = skb_get_queue_mapping(skb); | |
ad7775dc | 705 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
032c5e82 TF |
706 | struct device *dev = &adapter->vdev->dev; |
707 | struct ibmvnic_tx_buff *tx_buff = NULL; | |
708 | struct ibmvnic_tx_pool *tx_pool; | |
709 | unsigned int tx_send_failed = 0; | |
710 | unsigned int tx_map_failed = 0; | |
711 | unsigned int tx_dropped = 0; | |
712 | unsigned int tx_packets = 0; | |
713 | unsigned int tx_bytes = 0; | |
714 | dma_addr_t data_dma_addr; | |
715 | struct netdev_queue *txq; | |
716 | bool used_bounce = false; | |
717 | unsigned long lpar_rc; | |
718 | union sub_crq tx_crq; | |
719 | unsigned int offset; | |
ad7775dc | 720 | int num_entries = 1; |
032c5e82 TF |
721 | unsigned char *dst; |
722 | u64 *handle_array; | |
723 | int index = 0; | |
724 | int ret = 0; | |
725 | ||
726 | tx_pool = &adapter->tx_pool[queue_num]; | |
727 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); | |
728 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
729 | be32_to_cpu(adapter->login_rsp_buf-> | |
730 | off_txsubm_subcrqs)); | |
731 | if (adapter->migrated) { | |
732 | tx_send_failed++; | |
733 | tx_dropped++; | |
734 | ret = NETDEV_TX_BUSY; | |
735 | goto out; | |
736 | } | |
737 | ||
738 | index = tx_pool->free_map[tx_pool->consumer_index]; | |
739 | offset = index * adapter->req_mtu; | |
740 | dst = tx_pool->long_term_buff.buff + offset; | |
741 | memset(dst, 0, adapter->req_mtu); | |
742 | skb_copy_from_linear_data(skb, dst, skb->len); | |
743 | data_dma_addr = tx_pool->long_term_buff.addr + offset; | |
744 | ||
745 | tx_pool->consumer_index = | |
746 | (tx_pool->consumer_index + 1) % | |
747 | adapter->max_tx_entries_per_subcrq; | |
748 | ||
749 | tx_buff = &tx_pool->tx_buff[index]; | |
750 | tx_buff->skb = skb; | |
751 | tx_buff->data_dma[0] = data_dma_addr; | |
752 | tx_buff->data_len[0] = skb->len; | |
753 | tx_buff->index = index; | |
754 | tx_buff->pool_index = queue_num; | |
755 | tx_buff->last_frag = true; | |
756 | tx_buff->used_bounce = used_bounce; | |
757 | ||
758 | memset(&tx_crq, 0, sizeof(tx_crq)); | |
759 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; | |
760 | tx_crq.v1.type = IBMVNIC_TX_DESC; | |
761 | tx_crq.v1.n_crq_elem = 1; | |
762 | tx_crq.v1.n_sge = 1; | |
763 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; | |
764 | tx_crq.v1.correlator = cpu_to_be32(index); | |
765 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); | |
766 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); | |
767 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); | |
768 | ||
769 | if (adapter->vlan_header_insertion) { | |
770 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; | |
771 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); | |
772 | } | |
773 | ||
774 | if (skb->protocol == htons(ETH_P_IP)) { | |
775 | if (ip_hdr(skb)->version == 4) | |
776 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; | |
777 | else if (ip_hdr(skb)->version == 6) | |
778 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; | |
779 | ||
780 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
781 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; | |
782 | else if (ip_hdr(skb)->protocol != IPPROTO_TCP) | |
783 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; | |
784 | } | |
785 | ||
ad7775dc | 786 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
032c5e82 | 787 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
ad7775dc TF |
788 | hdrs += 2; |
789 | } | |
790 | /* determine if l2/3/4 headers are sent to firmware */ | |
791 | if ((*hdrs >> 7) & 1 && | |
792 | (skb->protocol == htons(ETH_P_IP) || | |
793 | skb->protocol == htons(ETH_P_IPV6))) { | |
794 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); | |
795 | tx_crq.v1.n_crq_elem = num_entries; | |
796 | tx_buff->indir_arr[0] = tx_crq; | |
797 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, | |
798 | sizeof(tx_buff->indir_arr), | |
799 | DMA_TO_DEVICE); | |
800 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { | |
801 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
802 | dev_err(dev, "tx: unable to map descriptor array\n"); | |
803 | tx_map_failed++; | |
804 | tx_dropped++; | |
805 | ret = NETDEV_TX_BUSY; | |
806 | goto out; | |
807 | } | |
498cd8e4 | 808 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
ad7775dc TF |
809 | (u64)tx_buff->indir_dma, |
810 | (u64)num_entries); | |
811 | } else { | |
498cd8e4 JA |
812 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
813 | &tx_crq); | |
ad7775dc | 814 | } |
032c5e82 TF |
815 | if (lpar_rc != H_SUCCESS) { |
816 | dev_err(dev, "tx failed with code %ld\n", lpar_rc); | |
817 | ||
818 | if (tx_pool->consumer_index == 0) | |
819 | tx_pool->consumer_index = | |
820 | adapter->max_tx_entries_per_subcrq - 1; | |
821 | else | |
822 | tx_pool->consumer_index--; | |
823 | ||
824 | tx_send_failed++; | |
825 | tx_dropped++; | |
826 | ret = NETDEV_TX_BUSY; | |
827 | goto out; | |
828 | } | |
829 | tx_packets++; | |
830 | tx_bytes += skb->len; | |
831 | txq->trans_start = jiffies; | |
832 | ret = NETDEV_TX_OK; | |
833 | ||
834 | out: | |
835 | netdev->stats.tx_dropped += tx_dropped; | |
836 | netdev->stats.tx_bytes += tx_bytes; | |
837 | netdev->stats.tx_packets += tx_packets; | |
838 | adapter->tx_send_failed += tx_send_failed; | |
839 | adapter->tx_map_failed += tx_map_failed; | |
840 | ||
841 | return ret; | |
842 | } | |
843 | ||
844 | static void ibmvnic_set_multi(struct net_device *netdev) | |
845 | { | |
846 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
847 | struct netdev_hw_addr *ha; | |
848 | union ibmvnic_crq crq; | |
849 | ||
850 | memset(&crq, 0, sizeof(crq)); | |
851 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
852 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
853 | ||
854 | if (netdev->flags & IFF_PROMISC) { | |
855 | if (!adapter->promisc_supported) | |
856 | return; | |
857 | } else { | |
858 | if (netdev->flags & IFF_ALLMULTI) { | |
859 | /* Accept all multicast */ | |
860 | memset(&crq, 0, sizeof(crq)); | |
861 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
862 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
863 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; | |
864 | ibmvnic_send_crq(adapter, &crq); | |
865 | } else if (netdev_mc_empty(netdev)) { | |
866 | /* Reject all multicast */ | |
867 | memset(&crq, 0, sizeof(crq)); | |
868 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
869 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
870 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; | |
871 | ibmvnic_send_crq(adapter, &crq); | |
872 | } else { | |
873 | /* Accept one or more multicast(s) */ | |
874 | netdev_for_each_mc_addr(ha, netdev) { | |
875 | memset(&crq, 0, sizeof(crq)); | |
876 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
877 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
878 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; | |
879 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], | |
880 | ha->addr); | |
881 | ibmvnic_send_crq(adapter, &crq); | |
882 | } | |
883 | } | |
884 | } | |
885 | } | |
886 | ||
887 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) | |
888 | { | |
889 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
890 | struct sockaddr *addr = p; | |
891 | union ibmvnic_crq crq; | |
892 | ||
893 | if (!is_valid_ether_addr(addr->sa_data)) | |
894 | return -EADDRNOTAVAIL; | |
895 | ||
896 | memset(&crq, 0, sizeof(crq)); | |
897 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; | |
898 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; | |
899 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); | |
900 | ibmvnic_send_crq(adapter, &crq); | |
901 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ | |
902 | return 0; | |
903 | } | |
904 | ||
032c5e82 TF |
905 | static void ibmvnic_tx_timeout(struct net_device *dev) |
906 | { | |
907 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
908 | int rc; | |
909 | ||
910 | /* Adapter timed out, resetting it */ | |
911 | release_sub_crqs(adapter); | |
912 | rc = ibmvnic_reset_crq(adapter); | |
913 | if (rc) | |
914 | dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n"); | |
915 | else | |
916 | ibmvnic_send_crq_init(adapter); | |
917 | } | |
918 | ||
919 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, | |
920 | struct ibmvnic_rx_buff *rx_buff) | |
921 | { | |
922 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; | |
923 | ||
924 | rx_buff->skb = NULL; | |
925 | ||
926 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); | |
927 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; | |
928 | ||
929 | atomic_dec(&pool->available); | |
930 | } | |
931 | ||
932 | static int ibmvnic_poll(struct napi_struct *napi, int budget) | |
933 | { | |
934 | struct net_device *netdev = napi->dev; | |
935 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
936 | int scrq_num = (int)(napi - adapter->napi); | |
937 | int frames_processed = 0; | |
938 | restart_poll: | |
939 | while (frames_processed < budget) { | |
940 | struct sk_buff *skb; | |
941 | struct ibmvnic_rx_buff *rx_buff; | |
942 | union sub_crq *next; | |
943 | u32 length; | |
944 | u16 offset; | |
945 | u8 flags = 0; | |
946 | ||
947 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) | |
948 | break; | |
949 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); | |
950 | rx_buff = | |
951 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> | |
952 | rx_comp.correlator); | |
953 | /* do error checking */ | |
954 | if (next->rx_comp.rc) { | |
955 | netdev_err(netdev, "rx error %x\n", next->rx_comp.rc); | |
956 | /* free the entry */ | |
957 | next->rx_comp.first = 0; | |
958 | remove_buff_from_pool(adapter, rx_buff); | |
959 | break; | |
960 | } | |
961 | ||
962 | length = be32_to_cpu(next->rx_comp.len); | |
963 | offset = be16_to_cpu(next->rx_comp.off_frame_data); | |
964 | flags = next->rx_comp.flags; | |
965 | skb = rx_buff->skb; | |
966 | skb_copy_to_linear_data(skb, rx_buff->data + offset, | |
967 | length); | |
968 | skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci); | |
969 | /* free the entry */ | |
970 | next->rx_comp.first = 0; | |
971 | remove_buff_from_pool(adapter, rx_buff); | |
972 | ||
973 | skb_put(skb, length); | |
974 | skb->protocol = eth_type_trans(skb, netdev); | |
975 | ||
976 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && | |
977 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { | |
978 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
979 | } | |
980 | ||
981 | length = skb->len; | |
982 | napi_gro_receive(napi, skb); /* send it up */ | |
983 | netdev->stats.rx_packets++; | |
984 | netdev->stats.rx_bytes += length; | |
985 | frames_processed++; | |
986 | } | |
498cd8e4 | 987 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); |
032c5e82 TF |
988 | |
989 | if (frames_processed < budget) { | |
990 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
991 | napi_complete(napi); | |
992 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && | |
993 | napi_reschedule(napi)) { | |
994 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
995 | goto restart_poll; | |
996 | } | |
997 | } | |
998 | return frames_processed; | |
999 | } | |
1000 | ||
1001 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1002 | static void ibmvnic_netpoll_controller(struct net_device *dev) | |
1003 | { | |
1004 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1005 | int i; | |
1006 | ||
1007 | replenish_pools(netdev_priv(dev)); | |
1008 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1009 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
1010 | adapter->rx_scrq[i]); | |
1011 | } | |
1012 | #endif | |
1013 | ||
1014 | static const struct net_device_ops ibmvnic_netdev_ops = { | |
1015 | .ndo_open = ibmvnic_open, | |
1016 | .ndo_stop = ibmvnic_close, | |
1017 | .ndo_start_xmit = ibmvnic_xmit, | |
1018 | .ndo_set_rx_mode = ibmvnic_set_multi, | |
1019 | .ndo_set_mac_address = ibmvnic_set_mac, | |
1020 | .ndo_validate_addr = eth_validate_addr, | |
032c5e82 TF |
1021 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
1022 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1023 | .ndo_poll_controller = ibmvnic_netpoll_controller, | |
1024 | #endif | |
1025 | }; | |
1026 | ||
1027 | /* ethtool functions */ | |
1028 | ||
1029 | static int ibmvnic_get_settings(struct net_device *netdev, | |
1030 | struct ethtool_cmd *cmd) | |
1031 | { | |
1032 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | | |
1033 | SUPPORTED_FIBRE); | |
1034 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | | |
1035 | ADVERTISED_FIBRE); | |
1036 | ethtool_cmd_speed_set(cmd, SPEED_1000); | |
1037 | cmd->duplex = DUPLEX_FULL; | |
1038 | cmd->port = PORT_FIBRE; | |
1039 | cmd->phy_address = 0; | |
1040 | cmd->transceiver = XCVR_INTERNAL; | |
1041 | cmd->autoneg = AUTONEG_ENABLE; | |
1042 | cmd->maxtxpkt = 0; | |
1043 | cmd->maxrxpkt = 1; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | static void ibmvnic_get_drvinfo(struct net_device *dev, | |
1048 | struct ethtool_drvinfo *info) | |
1049 | { | |
1050 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); | |
1051 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); | |
1052 | } | |
1053 | ||
1054 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) | |
1055 | { | |
1056 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1057 | ||
1058 | return adapter->msg_enable; | |
1059 | } | |
1060 | ||
1061 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) | |
1062 | { | |
1063 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1064 | ||
1065 | adapter->msg_enable = data; | |
1066 | } | |
1067 | ||
1068 | static u32 ibmvnic_get_link(struct net_device *netdev) | |
1069 | { | |
1070 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1071 | ||
1072 | /* Don't need to send a query because we request a logical link up at | |
1073 | * init and then we wait for link state indications | |
1074 | */ | |
1075 | return adapter->logical_link_state; | |
1076 | } | |
1077 | ||
1078 | static void ibmvnic_get_ringparam(struct net_device *netdev, | |
1079 | struct ethtool_ringparam *ring) | |
1080 | { | |
1081 | ring->rx_max_pending = 0; | |
1082 | ring->tx_max_pending = 0; | |
1083 | ring->rx_mini_max_pending = 0; | |
1084 | ring->rx_jumbo_max_pending = 0; | |
1085 | ring->rx_pending = 0; | |
1086 | ring->tx_pending = 0; | |
1087 | ring->rx_mini_pending = 0; | |
1088 | ring->rx_jumbo_pending = 0; | |
1089 | } | |
1090 | ||
1091 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
1092 | { | |
1093 | int i; | |
1094 | ||
1095 | if (stringset != ETH_SS_STATS) | |
1096 | return; | |
1097 | ||
1098 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN) | |
1099 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); | |
1100 | } | |
1101 | ||
1102 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) | |
1103 | { | |
1104 | switch (sset) { | |
1105 | case ETH_SS_STATS: | |
1106 | return ARRAY_SIZE(ibmvnic_stats); | |
1107 | default: | |
1108 | return -EOPNOTSUPP; | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, | |
1113 | struct ethtool_stats *stats, u64 *data) | |
1114 | { | |
1115 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1116 | union ibmvnic_crq crq; | |
1117 | int i; | |
1118 | ||
1119 | memset(&crq, 0, sizeof(crq)); | |
1120 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; | |
1121 | crq.request_statistics.cmd = REQUEST_STATISTICS; | |
1122 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); | |
1123 | crq.request_statistics.len = | |
1124 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); | |
1125 | ibmvnic_send_crq(adapter, &crq); | |
1126 | ||
1127 | /* Wait for data to be written */ | |
1128 | init_completion(&adapter->stats_done); | |
1129 | wait_for_completion(&adapter->stats_done); | |
1130 | ||
1131 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) | |
1132 | data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset); | |
1133 | } | |
1134 | ||
1135 | static const struct ethtool_ops ibmvnic_ethtool_ops = { | |
1136 | .get_settings = ibmvnic_get_settings, | |
1137 | .get_drvinfo = ibmvnic_get_drvinfo, | |
1138 | .get_msglevel = ibmvnic_get_msglevel, | |
1139 | .set_msglevel = ibmvnic_set_msglevel, | |
1140 | .get_link = ibmvnic_get_link, | |
1141 | .get_ringparam = ibmvnic_get_ringparam, | |
1142 | .get_strings = ibmvnic_get_strings, | |
1143 | .get_sset_count = ibmvnic_get_sset_count, | |
1144 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, | |
1145 | }; | |
1146 | ||
1147 | /* Routines for managing CRQs/sCRQs */ | |
1148 | ||
1149 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, | |
1150 | struct ibmvnic_sub_crq_queue *scrq) | |
1151 | { | |
1152 | struct device *dev = &adapter->vdev->dev; | |
1153 | long rc; | |
1154 | ||
1155 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); | |
1156 | ||
1157 | /* Close the sub-crqs */ | |
1158 | do { | |
1159 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, | |
1160 | adapter->vdev->unit_address, | |
1161 | scrq->crq_num); | |
1162 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
1163 | ||
1164 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
1165 | DMA_BIDIRECTIONAL); | |
1166 | free_pages((unsigned long)scrq->msgs, 2); | |
1167 | kfree(scrq); | |
1168 | } | |
1169 | ||
1170 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter | |
1171 | *adapter) | |
1172 | { | |
1173 | struct device *dev = &adapter->vdev->dev; | |
1174 | struct ibmvnic_sub_crq_queue *scrq; | |
1175 | int rc; | |
1176 | ||
1177 | scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC); | |
1178 | if (!scrq) | |
1179 | return NULL; | |
1180 | ||
1181 | scrq->msgs = (union sub_crq *)__get_free_pages(GFP_KERNEL, 2); | |
1182 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); | |
1183 | if (!scrq->msgs) { | |
1184 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); | |
1185 | goto zero_page_failed; | |
1186 | } | |
1187 | ||
1188 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, | |
1189 | DMA_BIDIRECTIONAL); | |
1190 | if (dma_mapping_error(dev, scrq->msg_token)) { | |
1191 | dev_warn(dev, "Couldn't map crq queue messages page\n"); | |
1192 | goto map_failed; | |
1193 | } | |
1194 | ||
1195 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
1196 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
1197 | ||
1198 | if (rc == H_RESOURCE) | |
1199 | rc = ibmvnic_reset_crq(adapter); | |
1200 | ||
1201 | if (rc == H_CLOSED) { | |
1202 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); | |
1203 | } else if (rc) { | |
1204 | dev_warn(dev, "Error %d registering sub-crq\n", rc); | |
1205 | goto reg_failed; | |
1206 | } | |
1207 | ||
032c5e82 TF |
1208 | scrq->adapter = adapter; |
1209 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); | |
1210 | scrq->cur = 0; | |
1211 | scrq->rx_skb_top = NULL; | |
1212 | spin_lock_init(&scrq->lock); | |
1213 | ||
1214 | netdev_dbg(adapter->netdev, | |
1215 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", | |
1216 | scrq->crq_num, scrq->hw_irq, scrq->irq); | |
1217 | ||
1218 | return scrq; | |
1219 | ||
032c5e82 TF |
1220 | reg_failed: |
1221 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
1222 | DMA_BIDIRECTIONAL); | |
1223 | map_failed: | |
1224 | free_pages((unsigned long)scrq->msgs, 2); | |
1225 | zero_page_failed: | |
1226 | kfree(scrq); | |
1227 | ||
1228 | return NULL; | |
1229 | } | |
1230 | ||
1231 | static void release_sub_crqs(struct ibmvnic_adapter *adapter) | |
1232 | { | |
1233 | int i; | |
1234 | ||
1235 | if (adapter->tx_scrq) { | |
1236 | for (i = 0; i < adapter->req_tx_queues; i++) | |
1237 | if (adapter->tx_scrq[i]) { | |
1238 | free_irq(adapter->tx_scrq[i]->irq, | |
1239 | adapter->tx_scrq[i]); | |
88eb98a0 | 1240 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
032c5e82 TF |
1241 | release_sub_crq_queue(adapter, |
1242 | adapter->tx_scrq[i]); | |
1243 | } | |
1244 | adapter->tx_scrq = NULL; | |
1245 | } | |
1246 | ||
1247 | if (adapter->rx_scrq) { | |
1248 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1249 | if (adapter->rx_scrq[i]) { | |
1250 | free_irq(adapter->rx_scrq[i]->irq, | |
1251 | adapter->rx_scrq[i]); | |
88eb98a0 | 1252 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
032c5e82 TF |
1253 | release_sub_crq_queue(adapter, |
1254 | adapter->rx_scrq[i]); | |
1255 | } | |
1256 | adapter->rx_scrq = NULL; | |
1257 | } | |
1258 | ||
1259 | adapter->requested_caps = 0; | |
1260 | } | |
1261 | ||
ea22d51a TF |
1262 | static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter) |
1263 | { | |
1264 | int i; | |
1265 | ||
1266 | if (adapter->tx_scrq) { | |
1267 | for (i = 0; i < adapter->req_tx_queues; i++) | |
1268 | if (adapter->tx_scrq[i]) | |
1269 | release_sub_crq_queue(adapter, | |
1270 | adapter->tx_scrq[i]); | |
1271 | adapter->tx_scrq = NULL; | |
1272 | } | |
1273 | ||
1274 | if (adapter->rx_scrq) { | |
1275 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1276 | if (adapter->rx_scrq[i]) | |
1277 | release_sub_crq_queue(adapter, | |
1278 | adapter->rx_scrq[i]); | |
1279 | adapter->rx_scrq = NULL; | |
1280 | } | |
1281 | ||
1282 | adapter->requested_caps = 0; | |
1283 | } | |
1284 | ||
032c5e82 TF |
1285 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
1286 | struct ibmvnic_sub_crq_queue *scrq) | |
1287 | { | |
1288 | struct device *dev = &adapter->vdev->dev; | |
1289 | unsigned long rc; | |
1290 | ||
1291 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1292 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1293 | if (rc) | |
1294 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", | |
1295 | scrq->hw_irq, rc); | |
1296 | return rc; | |
1297 | } | |
1298 | ||
1299 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, | |
1300 | struct ibmvnic_sub_crq_queue *scrq) | |
1301 | { | |
1302 | struct device *dev = &adapter->vdev->dev; | |
1303 | unsigned long rc; | |
1304 | ||
1305 | if (scrq->hw_irq > 0x100000000ULL) { | |
1306 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); | |
1307 | return 1; | |
1308 | } | |
1309 | ||
1310 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1311 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1312 | if (rc) | |
1313 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", | |
1314 | scrq->hw_irq, rc); | |
1315 | return rc; | |
1316 | } | |
1317 | ||
1318 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, | |
1319 | struct ibmvnic_sub_crq_queue *scrq) | |
1320 | { | |
1321 | struct device *dev = &adapter->vdev->dev; | |
1322 | struct ibmvnic_tx_buff *txbuff; | |
1323 | union sub_crq *next; | |
1324 | int index; | |
1325 | int i, j; | |
ad7775dc | 1326 | u8 first; |
032c5e82 TF |
1327 | |
1328 | restart_loop: | |
1329 | while (pending_scrq(adapter, scrq)) { | |
1330 | unsigned int pool = scrq->pool_index; | |
1331 | ||
1332 | next = ibmvnic_next_scrq(adapter, scrq); | |
1333 | for (i = 0; i < next->tx_comp.num_comps; i++) { | |
1334 | if (next->tx_comp.rcs[i]) { | |
1335 | dev_err(dev, "tx error %x\n", | |
1336 | next->tx_comp.rcs[i]); | |
1337 | continue; | |
1338 | } | |
1339 | index = be32_to_cpu(next->tx_comp.correlators[i]); | |
1340 | txbuff = &adapter->tx_pool[pool].tx_buff[index]; | |
1341 | ||
1342 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { | |
1343 | if (!txbuff->data_dma[j]) | |
1344 | continue; | |
1345 | ||
1346 | txbuff->data_dma[j] = 0; | |
1347 | txbuff->used_bounce = false; | |
1348 | } | |
ad7775dc TF |
1349 | /* if sub_crq was sent indirectly */ |
1350 | first = txbuff->indir_arr[0].generic.first; | |
1351 | if (first == IBMVNIC_CRQ_CMD) { | |
1352 | dma_unmap_single(dev, txbuff->indir_dma, | |
1353 | sizeof(txbuff->indir_arr), | |
1354 | DMA_TO_DEVICE); | |
1355 | } | |
032c5e82 TF |
1356 | |
1357 | if (txbuff->last_frag) | |
1358 | dev_kfree_skb_any(txbuff->skb); | |
1359 | ||
1360 | adapter->tx_pool[pool].free_map[adapter->tx_pool[pool]. | |
1361 | producer_index] = index; | |
1362 | adapter->tx_pool[pool].producer_index = | |
1363 | (adapter->tx_pool[pool].producer_index + 1) % | |
1364 | adapter->max_tx_entries_per_subcrq; | |
1365 | } | |
1366 | /* remove tx_comp scrq*/ | |
1367 | next->tx_comp.first = 0; | |
1368 | } | |
1369 | ||
1370 | enable_scrq_irq(adapter, scrq); | |
1371 | ||
1372 | if (pending_scrq(adapter, scrq)) { | |
1373 | disable_scrq_irq(adapter, scrq); | |
1374 | goto restart_loop; | |
1375 | } | |
1376 | ||
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) | |
1381 | { | |
1382 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
1383 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
1384 | ||
1385 | disable_scrq_irq(adapter, scrq); | |
1386 | ibmvnic_complete_tx(adapter, scrq); | |
1387 | ||
1388 | return IRQ_HANDLED; | |
1389 | } | |
1390 | ||
1391 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) | |
1392 | { | |
1393 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
1394 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
1395 | ||
1396 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { | |
1397 | disable_scrq_irq(adapter, scrq); | |
1398 | __napi_schedule(&adapter->napi[scrq->scrq_num]); | |
1399 | } | |
1400 | ||
1401 | return IRQ_HANDLED; | |
1402 | } | |
1403 | ||
ea22d51a TF |
1404 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
1405 | { | |
1406 | struct device *dev = &adapter->vdev->dev; | |
1407 | struct ibmvnic_sub_crq_queue *scrq; | |
1408 | int i = 0, j = 0; | |
1409 | int rc = 0; | |
1410 | ||
1411 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1412 | scrq = adapter->tx_scrq[i]; | |
1413 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
1414 | ||
99c1790e | 1415 | if (!scrq->irq) { |
ea22d51a TF |
1416 | rc = -EINVAL; |
1417 | dev_err(dev, "Error mapping irq\n"); | |
1418 | goto req_tx_irq_failed; | |
1419 | } | |
1420 | ||
1421 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, | |
1422 | 0, "ibmvnic_tx", scrq); | |
1423 | ||
1424 | if (rc) { | |
1425 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", | |
1426 | scrq->irq, rc); | |
1427 | irq_dispose_mapping(scrq->irq); | |
1428 | goto req_rx_irq_failed; | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1433 | scrq = adapter->rx_scrq[i]; | |
1434 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
99c1790e | 1435 | if (!scrq->irq) { |
ea22d51a TF |
1436 | rc = -EINVAL; |
1437 | dev_err(dev, "Error mapping irq\n"); | |
1438 | goto req_rx_irq_failed; | |
1439 | } | |
1440 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, | |
1441 | 0, "ibmvnic_rx", scrq); | |
1442 | if (rc) { | |
1443 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", | |
1444 | scrq->irq, rc); | |
1445 | irq_dispose_mapping(scrq->irq); | |
1446 | goto req_rx_irq_failed; | |
1447 | } | |
1448 | } | |
1449 | return rc; | |
1450 | ||
1451 | req_rx_irq_failed: | |
1452 | for (j = 0; j < i; j++) | |
1453 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); | |
1454 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
1455 | i = adapter->req_tx_queues; | |
1456 | req_tx_irq_failed: | |
1457 | for (j = 0; j < i; j++) | |
1458 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); | |
1459 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
1460 | release_sub_crqs_no_irqs(adapter); | |
1461 | return rc; | |
1462 | } | |
1463 | ||
032c5e82 TF |
1464 | static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry) |
1465 | { | |
1466 | struct device *dev = &adapter->vdev->dev; | |
1467 | struct ibmvnic_sub_crq_queue **allqueues; | |
1468 | int registered_queues = 0; | |
1469 | union ibmvnic_crq crq; | |
1470 | int total_queues; | |
1471 | int more = 0; | |
ea22d51a | 1472 | int i; |
032c5e82 TF |
1473 | |
1474 | if (!retry) { | |
1475 | /* Sub-CRQ entries are 32 byte long */ | |
1476 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); | |
1477 | ||
1478 | if (adapter->min_tx_entries_per_subcrq > entries_page || | |
1479 | adapter->min_rx_add_entries_per_subcrq > entries_page) { | |
1480 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); | |
1481 | goto allqueues_failed; | |
1482 | } | |
1483 | ||
1484 | /* Get the minimum between the queried max and the entries | |
1485 | * that fit in our PAGE_SIZE | |
1486 | */ | |
1487 | adapter->req_tx_entries_per_subcrq = | |
1488 | adapter->max_tx_entries_per_subcrq > entries_page ? | |
1489 | entries_page : adapter->max_tx_entries_per_subcrq; | |
1490 | adapter->req_rx_add_entries_per_subcrq = | |
1491 | adapter->max_rx_add_entries_per_subcrq > entries_page ? | |
1492 | entries_page : adapter->max_rx_add_entries_per_subcrq; | |
1493 | ||
1494 | /* Choosing the maximum number of queues supported by firmware*/ | |
498cd8e4 JA |
1495 | adapter->req_tx_queues = adapter->max_tx_queues; |
1496 | adapter->req_rx_queues = adapter->max_rx_queues; | |
1497 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; | |
032c5e82 TF |
1498 | |
1499 | adapter->req_mtu = adapter->max_mtu; | |
1500 | } | |
1501 | ||
1502 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; | |
1503 | ||
1504 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC); | |
1505 | if (!allqueues) | |
1506 | goto allqueues_failed; | |
1507 | ||
1508 | for (i = 0; i < total_queues; i++) { | |
1509 | allqueues[i] = init_sub_crq_queue(adapter); | |
1510 | if (!allqueues[i]) { | |
1511 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); | |
1512 | break; | |
1513 | } | |
1514 | registered_queues++; | |
1515 | } | |
1516 | ||
1517 | /* Make sure we were able to register the minimum number of queues */ | |
1518 | if (registered_queues < | |
1519 | adapter->min_tx_queues + adapter->min_rx_queues) { | |
1520 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); | |
1521 | goto tx_failed; | |
1522 | } | |
1523 | ||
1524 | /* Distribute the failed allocated queues*/ | |
1525 | for (i = 0; i < total_queues - registered_queues + more ; i++) { | |
1526 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); | |
1527 | switch (i % 3) { | |
1528 | case 0: | |
1529 | if (adapter->req_rx_queues > adapter->min_rx_queues) | |
1530 | adapter->req_rx_queues--; | |
1531 | else | |
1532 | more++; | |
1533 | break; | |
1534 | case 1: | |
1535 | if (adapter->req_tx_queues > adapter->min_tx_queues) | |
1536 | adapter->req_tx_queues--; | |
1537 | else | |
1538 | more++; | |
1539 | break; | |
1540 | } | |
1541 | } | |
1542 | ||
1543 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, | |
1544 | sizeof(*adapter->tx_scrq), GFP_ATOMIC); | |
1545 | if (!adapter->tx_scrq) | |
1546 | goto tx_failed; | |
1547 | ||
1548 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1549 | adapter->tx_scrq[i] = allqueues[i]; | |
1550 | adapter->tx_scrq[i]->pool_index = i; | |
032c5e82 TF |
1551 | } |
1552 | ||
1553 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, | |
1554 | sizeof(*adapter->rx_scrq), GFP_ATOMIC); | |
1555 | if (!adapter->rx_scrq) | |
1556 | goto rx_failed; | |
1557 | ||
1558 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1559 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; | |
1560 | adapter->rx_scrq[i]->scrq_num = i; | |
032c5e82 TF |
1561 | } |
1562 | ||
1563 | memset(&crq, 0, sizeof(crq)); | |
1564 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
1565 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
1566 | ||
1567 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); | |
de89e854 | 1568 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
032c5e82 TF |
1569 | ibmvnic_send_crq(adapter, &crq); |
1570 | ||
1571 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); | |
de89e854 | 1572 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
032c5e82 TF |
1573 | ibmvnic_send_crq(adapter, &crq); |
1574 | ||
1575 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); | |
de89e854 | 1576 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
032c5e82 TF |
1577 | ibmvnic_send_crq(adapter, &crq); |
1578 | ||
1579 | crq.request_capability.capability = | |
1580 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); | |
1581 | crq.request_capability.number = | |
de89e854 | 1582 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
032c5e82 TF |
1583 | ibmvnic_send_crq(adapter, &crq); |
1584 | ||
1585 | crq.request_capability.capability = | |
1586 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); | |
1587 | crq.request_capability.number = | |
de89e854 | 1588 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
032c5e82 TF |
1589 | ibmvnic_send_crq(adapter, &crq); |
1590 | ||
1591 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); | |
de89e854 | 1592 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
032c5e82 TF |
1593 | ibmvnic_send_crq(adapter, &crq); |
1594 | ||
1595 | if (adapter->netdev->flags & IFF_PROMISC) { | |
1596 | if (adapter->promisc_supported) { | |
1597 | crq.request_capability.capability = | |
1598 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 1599 | crq.request_capability.number = cpu_to_be64(1); |
032c5e82 TF |
1600 | ibmvnic_send_crq(adapter, &crq); |
1601 | } | |
1602 | } else { | |
1603 | crq.request_capability.capability = | |
1604 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 1605 | crq.request_capability.number = cpu_to_be64(0); |
032c5e82 TF |
1606 | ibmvnic_send_crq(adapter, &crq); |
1607 | } | |
1608 | ||
1609 | kfree(allqueues); | |
1610 | ||
1611 | return; | |
1612 | ||
032c5e82 TF |
1613 | rx_failed: |
1614 | kfree(adapter->tx_scrq); | |
1615 | adapter->tx_scrq = NULL; | |
1616 | tx_failed: | |
1617 | for (i = 0; i < registered_queues; i++) | |
1618 | release_sub_crq_queue(adapter, allqueues[i]); | |
1619 | kfree(allqueues); | |
1620 | allqueues_failed: | |
1621 | ibmvnic_remove(adapter->vdev); | |
1622 | } | |
1623 | ||
1624 | static int pending_scrq(struct ibmvnic_adapter *adapter, | |
1625 | struct ibmvnic_sub_crq_queue *scrq) | |
1626 | { | |
1627 | union sub_crq *entry = &scrq->msgs[scrq->cur]; | |
1628 | ||
1629 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing) | |
1630 | return 1; | |
1631 | else | |
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, | |
1636 | struct ibmvnic_sub_crq_queue *scrq) | |
1637 | { | |
1638 | union sub_crq *entry; | |
1639 | unsigned long flags; | |
1640 | ||
1641 | spin_lock_irqsave(&scrq->lock, flags); | |
1642 | entry = &scrq->msgs[scrq->cur]; | |
1643 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
1644 | if (++scrq->cur == scrq->size) | |
1645 | scrq->cur = 0; | |
1646 | } else { | |
1647 | entry = NULL; | |
1648 | } | |
1649 | spin_unlock_irqrestore(&scrq->lock, flags); | |
1650 | ||
1651 | return entry; | |
1652 | } | |
1653 | ||
1654 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) | |
1655 | { | |
1656 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
1657 | union ibmvnic_crq *crq; | |
1658 | ||
1659 | crq = &queue->msgs[queue->cur]; | |
1660 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
1661 | if (++queue->cur == queue->size) | |
1662 | queue->cur = 0; | |
1663 | } else { | |
1664 | crq = NULL; | |
1665 | } | |
1666 | ||
1667 | return crq; | |
1668 | } | |
1669 | ||
1670 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
1671 | union sub_crq *sub_crq) | |
1672 | { | |
1673 | unsigned int ua = adapter->vdev->unit_address; | |
1674 | struct device *dev = &adapter->vdev->dev; | |
1675 | u64 *u64_crq = (u64 *)sub_crq; | |
1676 | int rc; | |
1677 | ||
1678 | netdev_dbg(adapter->netdev, | |
1679 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", | |
1680 | (unsigned long int)cpu_to_be64(remote_handle), | |
1681 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
1682 | (unsigned long int)cpu_to_be64(u64_crq[1]), | |
1683 | (unsigned long int)cpu_to_be64(u64_crq[2]), | |
1684 | (unsigned long int)cpu_to_be64(u64_crq[3])); | |
1685 | ||
1686 | /* Make sure the hypervisor sees the complete request */ | |
1687 | mb(); | |
1688 | ||
1689 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, | |
1690 | cpu_to_be64(remote_handle), | |
1691 | cpu_to_be64(u64_crq[0]), | |
1692 | cpu_to_be64(u64_crq[1]), | |
1693 | cpu_to_be64(u64_crq[2]), | |
1694 | cpu_to_be64(u64_crq[3])); | |
1695 | ||
1696 | if (rc) { | |
1697 | if (rc == H_CLOSED) | |
1698 | dev_warn(dev, "CRQ Queue closed\n"); | |
1699 | dev_err(dev, "Send error (rc=%d)\n", rc); | |
1700 | } | |
1701 | ||
1702 | return rc; | |
1703 | } | |
1704 | ||
ad7775dc TF |
1705 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
1706 | u64 remote_handle, u64 ioba, u64 num_entries) | |
1707 | { | |
1708 | unsigned int ua = adapter->vdev->unit_address; | |
1709 | struct device *dev = &adapter->vdev->dev; | |
1710 | int rc; | |
1711 | ||
1712 | /* Make sure the hypervisor sees the complete request */ | |
1713 | mb(); | |
1714 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, | |
1715 | cpu_to_be64(remote_handle), | |
1716 | ioba, num_entries); | |
1717 | ||
1718 | if (rc) { | |
1719 | if (rc == H_CLOSED) | |
1720 | dev_warn(dev, "CRQ Queue closed\n"); | |
1721 | dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); | |
1722 | } | |
1723 | ||
1724 | return rc; | |
1725 | } | |
1726 | ||
032c5e82 TF |
1727 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
1728 | union ibmvnic_crq *crq) | |
1729 | { | |
1730 | unsigned int ua = adapter->vdev->unit_address; | |
1731 | struct device *dev = &adapter->vdev->dev; | |
1732 | u64 *u64_crq = (u64 *)crq; | |
1733 | int rc; | |
1734 | ||
1735 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", | |
1736 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
1737 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
1738 | ||
1739 | /* Make sure the hypervisor sees the complete request */ | |
1740 | mb(); | |
1741 | ||
1742 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, | |
1743 | cpu_to_be64(u64_crq[0]), | |
1744 | cpu_to_be64(u64_crq[1])); | |
1745 | ||
1746 | if (rc) { | |
1747 | if (rc == H_CLOSED) | |
1748 | dev_warn(dev, "CRQ Queue closed\n"); | |
1749 | dev_warn(dev, "Send error (rc=%d)\n", rc); | |
1750 | } | |
1751 | ||
1752 | return rc; | |
1753 | } | |
1754 | ||
1755 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) | |
1756 | { | |
1757 | union ibmvnic_crq crq; | |
1758 | ||
1759 | memset(&crq, 0, sizeof(crq)); | |
1760 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
1761 | crq.generic.cmd = IBMVNIC_CRQ_INIT; | |
1762 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); | |
1763 | ||
1764 | return ibmvnic_send_crq(adapter, &crq); | |
1765 | } | |
1766 | ||
1767 | static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter) | |
1768 | { | |
1769 | union ibmvnic_crq crq; | |
1770 | ||
1771 | memset(&crq, 0, sizeof(crq)); | |
1772 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
1773 | crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE; | |
1774 | netdev_dbg(adapter->netdev, "Sending CRQ init complete\n"); | |
1775 | ||
1776 | return ibmvnic_send_crq(adapter, &crq); | |
1777 | } | |
1778 | ||
1779 | static int send_version_xchg(struct ibmvnic_adapter *adapter) | |
1780 | { | |
1781 | union ibmvnic_crq crq; | |
1782 | ||
1783 | memset(&crq, 0, sizeof(crq)); | |
1784 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; | |
1785 | crq.version_exchange.cmd = VERSION_EXCHANGE; | |
1786 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); | |
1787 | ||
1788 | return ibmvnic_send_crq(adapter, &crq); | |
1789 | } | |
1790 | ||
1791 | static void send_login(struct ibmvnic_adapter *adapter) | |
1792 | { | |
1793 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; | |
1794 | struct ibmvnic_login_buffer *login_buffer; | |
1795 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
1796 | struct device *dev = &adapter->vdev->dev; | |
1797 | dma_addr_t rsp_buffer_token; | |
1798 | dma_addr_t buffer_token; | |
1799 | size_t rsp_buffer_size; | |
1800 | union ibmvnic_crq crq; | |
1801 | unsigned long flags; | |
1802 | size_t buffer_size; | |
1803 | __be64 *tx_list_p; | |
1804 | __be64 *rx_list_p; | |
1805 | int i; | |
1806 | ||
1807 | buffer_size = | |
1808 | sizeof(struct ibmvnic_login_buffer) + | |
1809 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues); | |
1810 | ||
1811 | login_buffer = kmalloc(buffer_size, GFP_ATOMIC); | |
1812 | if (!login_buffer) | |
1813 | goto buf_alloc_failed; | |
1814 | ||
1815 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, | |
1816 | DMA_TO_DEVICE); | |
1817 | if (dma_mapping_error(dev, buffer_token)) { | |
1818 | dev_err(dev, "Couldn't map login buffer\n"); | |
1819 | goto buf_map_failed; | |
1820 | } | |
1821 | ||
498cd8e4 JA |
1822 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
1823 | sizeof(u64) * adapter->req_tx_queues + | |
1824 | sizeof(u64) * adapter->req_rx_queues + | |
1825 | sizeof(u64) * adapter->req_rx_queues + | |
1826 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; | |
032c5e82 TF |
1827 | |
1828 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); | |
1829 | if (!login_rsp_buffer) | |
1830 | goto buf_rsp_alloc_failed; | |
1831 | ||
1832 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, | |
1833 | rsp_buffer_size, DMA_FROM_DEVICE); | |
1834 | if (dma_mapping_error(dev, rsp_buffer_token)) { | |
1835 | dev_err(dev, "Couldn't map login rsp buffer\n"); | |
1836 | goto buf_rsp_map_failed; | |
1837 | } | |
1838 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
1839 | if (!inflight_cmd) { | |
1840 | dev_err(dev, "Couldn't allocate inflight_cmd\n"); | |
1841 | goto inflight_alloc_failed; | |
1842 | } | |
1843 | adapter->login_buf = login_buffer; | |
1844 | adapter->login_buf_token = buffer_token; | |
1845 | adapter->login_buf_sz = buffer_size; | |
1846 | adapter->login_rsp_buf = login_rsp_buffer; | |
1847 | adapter->login_rsp_buf_token = rsp_buffer_token; | |
1848 | adapter->login_rsp_buf_sz = rsp_buffer_size; | |
1849 | ||
1850 | login_buffer->len = cpu_to_be32(buffer_size); | |
1851 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); | |
1852 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); | |
1853 | login_buffer->off_txcomp_subcrqs = | |
1854 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); | |
1855 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); | |
1856 | login_buffer->off_rxcomp_subcrqs = | |
1857 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + | |
1858 | sizeof(u64) * adapter->req_tx_queues); | |
1859 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); | |
1860 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); | |
1861 | ||
1862 | tx_list_p = (__be64 *)((char *)login_buffer + | |
1863 | sizeof(struct ibmvnic_login_buffer)); | |
1864 | rx_list_p = (__be64 *)((char *)login_buffer + | |
1865 | sizeof(struct ibmvnic_login_buffer) + | |
1866 | sizeof(u64) * adapter->req_tx_queues); | |
1867 | ||
1868 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1869 | if (adapter->tx_scrq[i]) { | |
1870 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> | |
1871 | crq_num); | |
1872 | } | |
1873 | } | |
1874 | ||
1875 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1876 | if (adapter->rx_scrq[i]) { | |
1877 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> | |
1878 | crq_num); | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); | |
1883 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { | |
1884 | netdev_dbg(adapter->netdev, "%016lx\n", | |
1885 | ((unsigned long int *)(adapter->login_buf))[i]); | |
1886 | } | |
1887 | ||
1888 | memset(&crq, 0, sizeof(crq)); | |
1889 | crq.login.first = IBMVNIC_CRQ_CMD; | |
1890 | crq.login.cmd = LOGIN; | |
1891 | crq.login.ioba = cpu_to_be32(buffer_token); | |
1892 | crq.login.len = cpu_to_be32(buffer_size); | |
1893 | ||
1894 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); | |
1895 | ||
1896 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
1897 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
1898 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
1899 | ||
1900 | ibmvnic_send_crq(adapter, &crq); | |
1901 | ||
1902 | return; | |
1903 | ||
1904 | inflight_alloc_failed: | |
1905 | dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, | |
1906 | DMA_FROM_DEVICE); | |
1907 | buf_rsp_map_failed: | |
1908 | kfree(login_rsp_buffer); | |
1909 | buf_rsp_alloc_failed: | |
1910 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); | |
1911 | buf_map_failed: | |
1912 | kfree(login_buffer); | |
1913 | buf_alloc_failed: | |
1914 | return; | |
1915 | } | |
1916 | ||
1917 | static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, | |
1918 | u32 len, u8 map_id) | |
1919 | { | |
1920 | union ibmvnic_crq crq; | |
1921 | ||
1922 | memset(&crq, 0, sizeof(crq)); | |
1923 | crq.request_map.first = IBMVNIC_CRQ_CMD; | |
1924 | crq.request_map.cmd = REQUEST_MAP; | |
1925 | crq.request_map.map_id = map_id; | |
1926 | crq.request_map.ioba = cpu_to_be32(addr); | |
1927 | crq.request_map.len = cpu_to_be32(len); | |
1928 | ibmvnic_send_crq(adapter, &crq); | |
1929 | } | |
1930 | ||
1931 | static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) | |
1932 | { | |
1933 | union ibmvnic_crq crq; | |
1934 | ||
1935 | memset(&crq, 0, sizeof(crq)); | |
1936 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; | |
1937 | crq.request_unmap.cmd = REQUEST_UNMAP; | |
1938 | crq.request_unmap.map_id = map_id; | |
1939 | ibmvnic_send_crq(adapter, &crq); | |
1940 | } | |
1941 | ||
1942 | static void send_map_query(struct ibmvnic_adapter *adapter) | |
1943 | { | |
1944 | union ibmvnic_crq crq; | |
1945 | ||
1946 | memset(&crq, 0, sizeof(crq)); | |
1947 | crq.query_map.first = IBMVNIC_CRQ_CMD; | |
1948 | crq.query_map.cmd = QUERY_MAP; | |
1949 | ibmvnic_send_crq(adapter, &crq); | |
1950 | } | |
1951 | ||
1952 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ | |
1953 | static void send_cap_queries(struct ibmvnic_adapter *adapter) | |
1954 | { | |
1955 | union ibmvnic_crq crq; | |
1956 | ||
1957 | atomic_set(&adapter->running_cap_queries, 0); | |
1958 | memset(&crq, 0, sizeof(crq)); | |
1959 | crq.query_capability.first = IBMVNIC_CRQ_CMD; | |
1960 | crq.query_capability.cmd = QUERY_CAPABILITY; | |
1961 | ||
1962 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); | |
1963 | atomic_inc(&adapter->running_cap_queries); | |
1964 | ibmvnic_send_crq(adapter, &crq); | |
1965 | ||
1966 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); | |
1967 | atomic_inc(&adapter->running_cap_queries); | |
1968 | ibmvnic_send_crq(adapter, &crq); | |
1969 | ||
1970 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); | |
1971 | atomic_inc(&adapter->running_cap_queries); | |
1972 | ibmvnic_send_crq(adapter, &crq); | |
1973 | ||
1974 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); | |
1975 | atomic_inc(&adapter->running_cap_queries); | |
1976 | ibmvnic_send_crq(adapter, &crq); | |
1977 | ||
1978 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); | |
1979 | atomic_inc(&adapter->running_cap_queries); | |
1980 | ibmvnic_send_crq(adapter, &crq); | |
1981 | ||
1982 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); | |
1983 | atomic_inc(&adapter->running_cap_queries); | |
1984 | ibmvnic_send_crq(adapter, &crq); | |
1985 | ||
1986 | crq.query_capability.capability = | |
1987 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); | |
1988 | atomic_inc(&adapter->running_cap_queries); | |
1989 | ibmvnic_send_crq(adapter, &crq); | |
1990 | ||
1991 | crq.query_capability.capability = | |
1992 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); | |
1993 | atomic_inc(&adapter->running_cap_queries); | |
1994 | ibmvnic_send_crq(adapter, &crq); | |
1995 | ||
1996 | crq.query_capability.capability = | |
1997 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); | |
1998 | atomic_inc(&adapter->running_cap_queries); | |
1999 | ibmvnic_send_crq(adapter, &crq); | |
2000 | ||
2001 | crq.query_capability.capability = | |
2002 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); | |
2003 | atomic_inc(&adapter->running_cap_queries); | |
2004 | ibmvnic_send_crq(adapter, &crq); | |
2005 | ||
2006 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); | |
2007 | atomic_inc(&adapter->running_cap_queries); | |
2008 | ibmvnic_send_crq(adapter, &crq); | |
2009 | ||
2010 | crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); | |
2011 | atomic_inc(&adapter->running_cap_queries); | |
2012 | ibmvnic_send_crq(adapter, &crq); | |
2013 | ||
2014 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); | |
2015 | atomic_inc(&adapter->running_cap_queries); | |
2016 | ibmvnic_send_crq(adapter, &crq); | |
2017 | ||
2018 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); | |
2019 | atomic_inc(&adapter->running_cap_queries); | |
2020 | ibmvnic_send_crq(adapter, &crq); | |
2021 | ||
2022 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); | |
2023 | atomic_inc(&adapter->running_cap_queries); | |
2024 | ibmvnic_send_crq(adapter, &crq); | |
2025 | ||
2026 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); | |
2027 | atomic_inc(&adapter->running_cap_queries); | |
2028 | ibmvnic_send_crq(adapter, &crq); | |
2029 | ||
2030 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); | |
2031 | atomic_inc(&adapter->running_cap_queries); | |
2032 | ibmvnic_send_crq(adapter, &crq); | |
2033 | ||
2034 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); | |
2035 | atomic_inc(&adapter->running_cap_queries); | |
2036 | ibmvnic_send_crq(adapter, &crq); | |
2037 | ||
2038 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); | |
2039 | atomic_inc(&adapter->running_cap_queries); | |
2040 | ibmvnic_send_crq(adapter, &crq); | |
2041 | ||
2042 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); | |
2043 | atomic_inc(&adapter->running_cap_queries); | |
2044 | ibmvnic_send_crq(adapter, &crq); | |
2045 | ||
2046 | crq.query_capability.capability = | |
2047 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); | |
2048 | atomic_inc(&adapter->running_cap_queries); | |
2049 | ibmvnic_send_crq(adapter, &crq); | |
2050 | ||
2051 | crq.query_capability.capability = | |
2052 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); | |
2053 | atomic_inc(&adapter->running_cap_queries); | |
2054 | ibmvnic_send_crq(adapter, &crq); | |
2055 | ||
2056 | crq.query_capability.capability = | |
2057 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); | |
2058 | atomic_inc(&adapter->running_cap_queries); | |
2059 | ibmvnic_send_crq(adapter, &crq); | |
2060 | ||
2061 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); | |
2062 | atomic_inc(&adapter->running_cap_queries); | |
2063 | ibmvnic_send_crq(adapter, &crq); | |
2064 | } | |
2065 | ||
2066 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) | |
2067 | { | |
2068 | struct device *dev = &adapter->vdev->dev; | |
2069 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; | |
2070 | union ibmvnic_crq crq; | |
2071 | int i; | |
2072 | ||
2073 | dma_unmap_single(dev, adapter->ip_offload_tok, | |
2074 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); | |
2075 | ||
2076 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); | |
2077 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) | |
2078 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2079 | ((unsigned long int *)(buf))[i]); | |
2080 | ||
2081 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); | |
2082 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); | |
2083 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", | |
2084 | buf->tcp_ipv4_chksum); | |
2085 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", | |
2086 | buf->tcp_ipv6_chksum); | |
2087 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", | |
2088 | buf->udp_ipv4_chksum); | |
2089 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", | |
2090 | buf->udp_ipv6_chksum); | |
2091 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", | |
2092 | buf->large_tx_ipv4); | |
2093 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", | |
2094 | buf->large_tx_ipv6); | |
2095 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", | |
2096 | buf->large_rx_ipv4); | |
2097 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", | |
2098 | buf->large_rx_ipv6); | |
2099 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", | |
2100 | buf->max_ipv4_header_size); | |
2101 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", | |
2102 | buf->max_ipv6_header_size); | |
2103 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", | |
2104 | buf->max_tcp_header_size); | |
2105 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", | |
2106 | buf->max_udp_header_size); | |
2107 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", | |
2108 | buf->max_large_tx_size); | |
2109 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", | |
2110 | buf->max_large_rx_size); | |
2111 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", | |
2112 | buf->ipv6_extension_header); | |
2113 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", | |
2114 | buf->tcp_pseudosum_req); | |
2115 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", | |
2116 | buf->num_ipv6_ext_headers); | |
2117 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", | |
2118 | buf->off_ipv6_ext_headers); | |
2119 | ||
2120 | adapter->ip_offload_ctrl_tok = | |
2121 | dma_map_single(dev, &adapter->ip_offload_ctrl, | |
2122 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); | |
2123 | ||
2124 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { | |
2125 | dev_err(dev, "Couldn't map ip offload control buffer\n"); | |
2126 | return; | |
2127 | } | |
2128 | ||
2129 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); | |
2130 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; | |
2131 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; | |
2132 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; | |
2133 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; | |
2134 | ||
2135 | /* large_tx/rx disabled for now, additional features needed */ | |
2136 | adapter->ip_offload_ctrl.large_tx_ipv4 = 0; | |
2137 | adapter->ip_offload_ctrl.large_tx_ipv6 = 0; | |
2138 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; | |
2139 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; | |
2140 | ||
2141 | adapter->netdev->features = NETIF_F_GSO; | |
2142 | ||
2143 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) | |
2144 | adapter->netdev->features |= NETIF_F_IP_CSUM; | |
2145 | ||
2146 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) | |
2147 | adapter->netdev->features |= NETIF_F_IPV6_CSUM; | |
2148 | ||
9be02cdf TF |
2149 | if ((adapter->netdev->features & |
2150 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) | |
2151 | adapter->netdev->features |= NETIF_F_RXCSUM; | |
2152 | ||
032c5e82 TF |
2153 | memset(&crq, 0, sizeof(crq)); |
2154 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2155 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; | |
2156 | crq.control_ip_offload.len = | |
2157 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
2158 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); | |
2159 | ibmvnic_send_crq(adapter, &crq); | |
2160 | } | |
2161 | ||
2162 | static void handle_error_info_rsp(union ibmvnic_crq *crq, | |
2163 | struct ibmvnic_adapter *adapter) | |
2164 | { | |
2165 | struct device *dev = &adapter->vdev->dev; | |
96183182 | 2166 | struct ibmvnic_error_buff *error_buff, *tmp; |
032c5e82 TF |
2167 | unsigned long flags; |
2168 | bool found = false; | |
2169 | int i; | |
2170 | ||
2171 | if (!crq->request_error_rsp.rc.code) { | |
2172 | dev_info(dev, "Request Error Rsp returned with rc=%x\n", | |
2173 | crq->request_error_rsp.rc.code); | |
2174 | return; | |
2175 | } | |
2176 | ||
2177 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
96183182 | 2178 | list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) |
032c5e82 TF |
2179 | if (error_buff->error_id == crq->request_error_rsp.error_id) { |
2180 | found = true; | |
2181 | list_del(&error_buff->list); | |
2182 | break; | |
2183 | } | |
2184 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2185 | ||
2186 | if (!found) { | |
2187 | dev_err(dev, "Couldn't find error id %x\n", | |
2188 | crq->request_error_rsp.error_id); | |
2189 | return; | |
2190 | } | |
2191 | ||
2192 | dev_err(dev, "Detailed info for error id %x:", | |
2193 | crq->request_error_rsp.error_id); | |
2194 | ||
2195 | for (i = 0; i < error_buff->len; i++) { | |
2196 | pr_cont("%02x", (int)error_buff->buff[i]); | |
2197 | if (i % 8 == 7) | |
2198 | pr_cont(" "); | |
2199 | } | |
2200 | pr_cont("\n"); | |
2201 | ||
2202 | dma_unmap_single(dev, error_buff->dma, error_buff->len, | |
2203 | DMA_FROM_DEVICE); | |
2204 | kfree(error_buff->buff); | |
2205 | kfree(error_buff); | |
2206 | } | |
2207 | ||
2208 | static void handle_dump_size_rsp(union ibmvnic_crq *crq, | |
2209 | struct ibmvnic_adapter *adapter) | |
2210 | { | |
2211 | int len = be32_to_cpu(crq->request_dump_size_rsp.len); | |
2212 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
2213 | struct device *dev = &adapter->vdev->dev; | |
2214 | union ibmvnic_crq newcrq; | |
2215 | unsigned long flags; | |
2216 | ||
2217 | /* allocate and map buffer */ | |
2218 | adapter->dump_data = kmalloc(len, GFP_KERNEL); | |
2219 | if (!adapter->dump_data) { | |
2220 | complete(&adapter->fw_done); | |
2221 | return; | |
2222 | } | |
2223 | ||
2224 | adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len, | |
2225 | DMA_FROM_DEVICE); | |
2226 | ||
2227 | if (dma_mapping_error(dev, adapter->dump_data_token)) { | |
2228 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2229 | dev_err(dev, "Couldn't map dump data\n"); | |
2230 | kfree(adapter->dump_data); | |
2231 | complete(&adapter->fw_done); | |
2232 | return; | |
2233 | } | |
2234 | ||
2235 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
2236 | if (!inflight_cmd) { | |
2237 | dma_unmap_single(dev, adapter->dump_data_token, len, | |
2238 | DMA_FROM_DEVICE); | |
2239 | kfree(adapter->dump_data); | |
2240 | complete(&adapter->fw_done); | |
2241 | return; | |
2242 | } | |
2243 | ||
2244 | memset(&newcrq, 0, sizeof(newcrq)); | |
2245 | newcrq.request_dump.first = IBMVNIC_CRQ_CMD; | |
2246 | newcrq.request_dump.cmd = REQUEST_DUMP; | |
2247 | newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token); | |
2248 | newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size); | |
2249 | ||
2250 | memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq)); | |
2251 | ||
2252 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
2253 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
2254 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2255 | ||
2256 | ibmvnic_send_crq(adapter, &newcrq); | |
2257 | } | |
2258 | ||
2259 | static void handle_error_indication(union ibmvnic_crq *crq, | |
2260 | struct ibmvnic_adapter *adapter) | |
2261 | { | |
2262 | int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz); | |
2263 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
2264 | struct device *dev = &adapter->vdev->dev; | |
2265 | struct ibmvnic_error_buff *error_buff; | |
2266 | union ibmvnic_crq new_crq; | |
2267 | unsigned long flags; | |
2268 | ||
2269 | dev_err(dev, "Firmware reports %serror id %x, cause %d\n", | |
2270 | crq->error_indication. | |
2271 | flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "", | |
2272 | crq->error_indication.error_id, | |
2273 | crq->error_indication.error_cause); | |
2274 | ||
2275 | error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC); | |
2276 | if (!error_buff) | |
2277 | return; | |
2278 | ||
2279 | error_buff->buff = kmalloc(detail_len, GFP_ATOMIC); | |
2280 | if (!error_buff->buff) { | |
2281 | kfree(error_buff); | |
2282 | return; | |
2283 | } | |
2284 | ||
2285 | error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len, | |
2286 | DMA_FROM_DEVICE); | |
2287 | if (dma_mapping_error(dev, error_buff->dma)) { | |
2288 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2289 | dev_err(dev, "Couldn't map error buffer\n"); | |
2290 | kfree(error_buff->buff); | |
2291 | kfree(error_buff); | |
2292 | return; | |
2293 | } | |
2294 | ||
2295 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
2296 | if (!inflight_cmd) { | |
2297 | dma_unmap_single(dev, error_buff->dma, detail_len, | |
2298 | DMA_FROM_DEVICE); | |
2299 | kfree(error_buff->buff); | |
2300 | kfree(error_buff); | |
2301 | return; | |
2302 | } | |
2303 | ||
2304 | error_buff->len = detail_len; | |
2305 | error_buff->error_id = crq->error_indication.error_id; | |
2306 | ||
2307 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
2308 | list_add_tail(&error_buff->list, &adapter->errors); | |
2309 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2310 | ||
2311 | memset(&new_crq, 0, sizeof(new_crq)); | |
2312 | new_crq.request_error_info.first = IBMVNIC_CRQ_CMD; | |
2313 | new_crq.request_error_info.cmd = REQUEST_ERROR_INFO; | |
2314 | new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma); | |
2315 | new_crq.request_error_info.len = cpu_to_be32(detail_len); | |
2316 | new_crq.request_error_info.error_id = crq->error_indication.error_id; | |
2317 | ||
2318 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); | |
2319 | ||
2320 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
2321 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
2322 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2323 | ||
2324 | ibmvnic_send_crq(adapter, &new_crq); | |
2325 | } | |
2326 | ||
2327 | static void handle_change_mac_rsp(union ibmvnic_crq *crq, | |
2328 | struct ibmvnic_adapter *adapter) | |
2329 | { | |
2330 | struct net_device *netdev = adapter->netdev; | |
2331 | struct device *dev = &adapter->vdev->dev; | |
2332 | long rc; | |
2333 | ||
2334 | rc = crq->change_mac_addr_rsp.rc.code; | |
2335 | if (rc) { | |
2336 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); | |
2337 | return; | |
2338 | } | |
2339 | memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], | |
2340 | ETH_ALEN); | |
2341 | } | |
2342 | ||
2343 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, | |
2344 | struct ibmvnic_adapter *adapter) | |
2345 | { | |
2346 | struct device *dev = &adapter->vdev->dev; | |
2347 | u64 *req_value; | |
2348 | char *name; | |
2349 | ||
2350 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { | |
2351 | case REQ_TX_QUEUES: | |
2352 | req_value = &adapter->req_tx_queues; | |
2353 | name = "tx"; | |
2354 | break; | |
2355 | case REQ_RX_QUEUES: | |
2356 | req_value = &adapter->req_rx_queues; | |
2357 | name = "rx"; | |
2358 | break; | |
2359 | case REQ_RX_ADD_QUEUES: | |
2360 | req_value = &adapter->req_rx_add_queues; | |
2361 | name = "rx_add"; | |
2362 | break; | |
2363 | case REQ_TX_ENTRIES_PER_SUBCRQ: | |
2364 | req_value = &adapter->req_tx_entries_per_subcrq; | |
2365 | name = "tx_entries_per_subcrq"; | |
2366 | break; | |
2367 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2368 | req_value = &adapter->req_rx_add_entries_per_subcrq; | |
2369 | name = "rx_add_entries_per_subcrq"; | |
2370 | break; | |
2371 | case REQ_MTU: | |
2372 | req_value = &adapter->req_mtu; | |
2373 | name = "mtu"; | |
2374 | break; | |
2375 | case PROMISC_REQUESTED: | |
2376 | req_value = &adapter->promisc; | |
2377 | name = "promisc"; | |
2378 | break; | |
2379 | default: | |
2380 | dev_err(dev, "Got invalid cap request rsp %d\n", | |
2381 | crq->request_capability.capability); | |
2382 | return; | |
2383 | } | |
2384 | ||
2385 | switch (crq->request_capability_rsp.rc.code) { | |
2386 | case SUCCESS: | |
2387 | break; | |
2388 | case PARTIALSUCCESS: | |
2389 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", | |
2390 | *req_value, | |
2391 | (long int)be32_to_cpu(crq->request_capability_rsp. | |
2392 | number), name); | |
ea22d51a | 2393 | release_sub_crqs_no_irqs(adapter); |
032c5e82 | 2394 | *req_value = be32_to_cpu(crq->request_capability_rsp.number); |
ea22d51a | 2395 | init_sub_crqs(adapter, 1); |
032c5e82 TF |
2396 | return; |
2397 | default: | |
2398 | dev_err(dev, "Error %d in request cap rsp\n", | |
2399 | crq->request_capability_rsp.rc.code); | |
2400 | return; | |
2401 | } | |
2402 | ||
2403 | /* Done receiving requested capabilities, query IP offload support */ | |
2404 | if (++adapter->requested_caps == 7) { | |
2405 | union ibmvnic_crq newcrq; | |
2406 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); | |
2407 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = | |
2408 | &adapter->ip_offload_buf; | |
2409 | ||
2410 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, | |
2411 | buf_sz, | |
2412 | DMA_FROM_DEVICE); | |
2413 | ||
2414 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { | |
2415 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2416 | dev_err(dev, "Couldn't map offload buffer\n"); | |
2417 | return; | |
2418 | } | |
2419 | ||
2420 | memset(&newcrq, 0, sizeof(newcrq)); | |
2421 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2422 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; | |
2423 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); | |
2424 | newcrq.query_ip_offload.ioba = | |
2425 | cpu_to_be32(adapter->ip_offload_tok); | |
2426 | ||
2427 | ibmvnic_send_crq(adapter, &newcrq); | |
2428 | } | |
2429 | } | |
2430 | ||
2431 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, | |
2432 | struct ibmvnic_adapter *adapter) | |
2433 | { | |
2434 | struct device *dev = &adapter->vdev->dev; | |
2435 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; | |
2436 | struct ibmvnic_login_buffer *login = adapter->login_buf; | |
2437 | union ibmvnic_crq crq; | |
2438 | int i; | |
2439 | ||
2440 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, | |
2441 | DMA_BIDIRECTIONAL); | |
2442 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
2443 | adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); | |
2444 | ||
498cd8e4 JA |
2445 | /* If the number of queues requested can't be allocated by the |
2446 | * server, the login response will return with code 1. We will need | |
2447 | * to resend the login buffer with fewer queues requested. | |
2448 | */ | |
2449 | if (login_rsp_crq->generic.rc.code) { | |
2450 | adapter->renegotiate = true; | |
2451 | complete(&adapter->init_done); | |
2452 | return 0; | |
2453 | } | |
2454 | ||
032c5e82 TF |
2455 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
2456 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { | |
2457 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2458 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); | |
2459 | } | |
2460 | ||
2461 | /* Sanity checks */ | |
2462 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || | |
2463 | (be32_to_cpu(login->num_rxcomp_subcrqs) * | |
2464 | adapter->req_rx_add_queues != | |
2465 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { | |
2466 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); | |
2467 | ibmvnic_remove(adapter->vdev); | |
2468 | return -EIO; | |
2469 | } | |
2470 | complete(&adapter->init_done); | |
2471 | ||
2472 | memset(&crq, 0, sizeof(crq)); | |
2473 | crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD; | |
2474 | crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM; | |
2475 | ibmvnic_send_crq(adapter, &crq); | |
2476 | ||
2477 | return 0; | |
2478 | } | |
2479 | ||
2480 | static void handle_request_map_rsp(union ibmvnic_crq *crq, | |
2481 | struct ibmvnic_adapter *adapter) | |
2482 | { | |
2483 | struct device *dev = &adapter->vdev->dev; | |
2484 | u8 map_id = crq->request_map_rsp.map_id; | |
2485 | int tx_subcrqs; | |
2486 | int rx_subcrqs; | |
2487 | long rc; | |
2488 | int i; | |
2489 | ||
2490 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
2491 | rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
2492 | ||
2493 | rc = crq->request_map_rsp.rc.code; | |
2494 | if (rc) { | |
2495 | dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc); | |
2496 | adapter->map_id--; | |
2497 | /* need to find and zero tx/rx_pool map_id */ | |
2498 | for (i = 0; i < tx_subcrqs; i++) { | |
2499 | if (adapter->tx_pool[i].long_term_buff.map_id == map_id) | |
2500 | adapter->tx_pool[i].long_term_buff.map_id = 0; | |
2501 | } | |
2502 | for (i = 0; i < rx_subcrqs; i++) { | |
2503 | if (adapter->rx_pool[i].long_term_buff.map_id == map_id) | |
2504 | adapter->rx_pool[i].long_term_buff.map_id = 0; | |
2505 | } | |
2506 | } | |
2507 | complete(&adapter->fw_done); | |
2508 | } | |
2509 | ||
2510 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, | |
2511 | struct ibmvnic_adapter *adapter) | |
2512 | { | |
2513 | struct device *dev = &adapter->vdev->dev; | |
2514 | long rc; | |
2515 | ||
2516 | rc = crq->request_unmap_rsp.rc.code; | |
2517 | if (rc) | |
2518 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); | |
2519 | } | |
2520 | ||
2521 | static void handle_query_map_rsp(union ibmvnic_crq *crq, | |
2522 | struct ibmvnic_adapter *adapter) | |
2523 | { | |
2524 | struct net_device *netdev = adapter->netdev; | |
2525 | struct device *dev = &adapter->vdev->dev; | |
2526 | long rc; | |
2527 | ||
2528 | rc = crq->query_map_rsp.rc.code; | |
2529 | if (rc) { | |
2530 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); | |
2531 | return; | |
2532 | } | |
2533 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", | |
2534 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, | |
2535 | crq->query_map_rsp.free_pages); | |
2536 | } | |
2537 | ||
2538 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, | |
2539 | struct ibmvnic_adapter *adapter) | |
2540 | { | |
2541 | struct net_device *netdev = adapter->netdev; | |
2542 | struct device *dev = &adapter->vdev->dev; | |
2543 | long rc; | |
2544 | ||
2545 | atomic_dec(&adapter->running_cap_queries); | |
2546 | netdev_dbg(netdev, "Outstanding queries: %d\n", | |
2547 | atomic_read(&adapter->running_cap_queries)); | |
2548 | rc = crq->query_capability.rc.code; | |
2549 | if (rc) { | |
2550 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); | |
2551 | goto out; | |
2552 | } | |
2553 | ||
2554 | switch (be16_to_cpu(crq->query_capability.capability)) { | |
2555 | case MIN_TX_QUEUES: | |
2556 | adapter->min_tx_queues = | |
de89e854 | 2557 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2558 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
2559 | adapter->min_tx_queues); | |
2560 | break; | |
2561 | case MIN_RX_QUEUES: | |
2562 | adapter->min_rx_queues = | |
de89e854 | 2563 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2564 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
2565 | adapter->min_rx_queues); | |
2566 | break; | |
2567 | case MIN_RX_ADD_QUEUES: | |
2568 | adapter->min_rx_add_queues = | |
de89e854 | 2569 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2570 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
2571 | adapter->min_rx_add_queues); | |
2572 | break; | |
2573 | case MAX_TX_QUEUES: | |
2574 | adapter->max_tx_queues = | |
de89e854 | 2575 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2576 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
2577 | adapter->max_tx_queues); | |
2578 | break; | |
2579 | case MAX_RX_QUEUES: | |
2580 | adapter->max_rx_queues = | |
de89e854 | 2581 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2582 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
2583 | adapter->max_rx_queues); | |
2584 | break; | |
2585 | case MAX_RX_ADD_QUEUES: | |
2586 | adapter->max_rx_add_queues = | |
de89e854 | 2587 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2588 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
2589 | adapter->max_rx_add_queues); | |
2590 | break; | |
2591 | case MIN_TX_ENTRIES_PER_SUBCRQ: | |
2592 | adapter->min_tx_entries_per_subcrq = | |
de89e854 | 2593 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2594 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
2595 | adapter->min_tx_entries_per_subcrq); | |
2596 | break; | |
2597 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2598 | adapter->min_rx_add_entries_per_subcrq = | |
de89e854 | 2599 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2600 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
2601 | adapter->min_rx_add_entries_per_subcrq); | |
2602 | break; | |
2603 | case MAX_TX_ENTRIES_PER_SUBCRQ: | |
2604 | adapter->max_tx_entries_per_subcrq = | |
de89e854 | 2605 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2606 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
2607 | adapter->max_tx_entries_per_subcrq); | |
2608 | break; | |
2609 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2610 | adapter->max_rx_add_entries_per_subcrq = | |
de89e854 | 2611 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2612 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
2613 | adapter->max_rx_add_entries_per_subcrq); | |
2614 | break; | |
2615 | case TCP_IP_OFFLOAD: | |
2616 | adapter->tcp_ip_offload = | |
de89e854 | 2617 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2618 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
2619 | adapter->tcp_ip_offload); | |
2620 | break; | |
2621 | case PROMISC_SUPPORTED: | |
2622 | adapter->promisc_supported = | |
de89e854 | 2623 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2624 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
2625 | adapter->promisc_supported); | |
2626 | break; | |
2627 | case MIN_MTU: | |
de89e854 | 2628 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
d894be57 | 2629 | netdev->min_mtu = adapter->min_mtu; |
032c5e82 TF |
2630 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
2631 | break; | |
2632 | case MAX_MTU: | |
de89e854 | 2633 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
d894be57 | 2634 | netdev->max_mtu = adapter->max_mtu; |
032c5e82 TF |
2635 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
2636 | break; | |
2637 | case MAX_MULTICAST_FILTERS: | |
2638 | adapter->max_multicast_filters = | |
de89e854 | 2639 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2640 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
2641 | adapter->max_multicast_filters); | |
2642 | break; | |
2643 | case VLAN_HEADER_INSERTION: | |
2644 | adapter->vlan_header_insertion = | |
de89e854 | 2645 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2646 | if (adapter->vlan_header_insertion) |
2647 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; | |
2648 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", | |
2649 | adapter->vlan_header_insertion); | |
2650 | break; | |
2651 | case MAX_TX_SG_ENTRIES: | |
2652 | adapter->max_tx_sg_entries = | |
de89e854 | 2653 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2654 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
2655 | adapter->max_tx_sg_entries); | |
2656 | break; | |
2657 | case RX_SG_SUPPORTED: | |
2658 | adapter->rx_sg_supported = | |
de89e854 | 2659 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2660 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
2661 | adapter->rx_sg_supported); | |
2662 | break; | |
2663 | case OPT_TX_COMP_SUB_QUEUES: | |
2664 | adapter->opt_tx_comp_sub_queues = | |
de89e854 | 2665 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2666 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
2667 | adapter->opt_tx_comp_sub_queues); | |
2668 | break; | |
2669 | case OPT_RX_COMP_QUEUES: | |
2670 | adapter->opt_rx_comp_queues = | |
de89e854 | 2671 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2672 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
2673 | adapter->opt_rx_comp_queues); | |
2674 | break; | |
2675 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: | |
2676 | adapter->opt_rx_bufadd_q_per_rx_comp_q = | |
de89e854 | 2677 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2678 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
2679 | adapter->opt_rx_bufadd_q_per_rx_comp_q); | |
2680 | break; | |
2681 | case OPT_TX_ENTRIES_PER_SUBCRQ: | |
2682 | adapter->opt_tx_entries_per_subcrq = | |
de89e854 | 2683 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2684 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
2685 | adapter->opt_tx_entries_per_subcrq); | |
2686 | break; | |
2687 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: | |
2688 | adapter->opt_rxba_entries_per_subcrq = | |
de89e854 | 2689 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2690 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
2691 | adapter->opt_rxba_entries_per_subcrq); | |
2692 | break; | |
2693 | case TX_RX_DESC_REQ: | |
2694 | adapter->tx_rx_desc_req = crq->query_capability.number; | |
2695 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", | |
2696 | adapter->tx_rx_desc_req); | |
2697 | break; | |
2698 | ||
2699 | default: | |
2700 | netdev_err(netdev, "Got invalid cap rsp %d\n", | |
2701 | crq->query_capability.capability); | |
2702 | } | |
2703 | ||
2704 | out: | |
2705 | if (atomic_read(&adapter->running_cap_queries) == 0) | |
ea22d51a | 2706 | init_sub_crqs(adapter, 0); |
032c5e82 TF |
2707 | /* We're done querying the capabilities, initialize sub-crqs */ |
2708 | } | |
2709 | ||
2710 | static void handle_control_ras_rsp(union ibmvnic_crq *crq, | |
2711 | struct ibmvnic_adapter *adapter) | |
2712 | { | |
2713 | u8 correlator = crq->control_ras_rsp.correlator; | |
2714 | struct device *dev = &adapter->vdev->dev; | |
2715 | bool found = false; | |
2716 | int i; | |
2717 | ||
2718 | if (crq->control_ras_rsp.rc.code) { | |
2719 | dev_warn(dev, "Control ras failed rc=%d\n", | |
2720 | crq->control_ras_rsp.rc.code); | |
2721 | return; | |
2722 | } | |
2723 | ||
2724 | for (i = 0; i < adapter->ras_comp_num; i++) { | |
2725 | if (adapter->ras_comps[i].correlator == correlator) { | |
2726 | found = true; | |
2727 | break; | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | if (!found) { | |
2732 | dev_warn(dev, "Correlator not found on control_ras_rsp\n"); | |
2733 | return; | |
2734 | } | |
2735 | ||
2736 | switch (crq->control_ras_rsp.op) { | |
2737 | case IBMVNIC_TRACE_LEVEL: | |
2738 | adapter->ras_comps[i].trace_level = crq->control_ras.level; | |
2739 | break; | |
2740 | case IBMVNIC_ERROR_LEVEL: | |
2741 | adapter->ras_comps[i].error_check_level = | |
2742 | crq->control_ras.level; | |
2743 | break; | |
2744 | case IBMVNIC_TRACE_PAUSE: | |
2745 | adapter->ras_comp_int[i].paused = 1; | |
2746 | break; | |
2747 | case IBMVNIC_TRACE_RESUME: | |
2748 | adapter->ras_comp_int[i].paused = 0; | |
2749 | break; | |
2750 | case IBMVNIC_TRACE_ON: | |
2751 | adapter->ras_comps[i].trace_on = 1; | |
2752 | break; | |
2753 | case IBMVNIC_TRACE_OFF: | |
2754 | adapter->ras_comps[i].trace_on = 0; | |
2755 | break; | |
2756 | case IBMVNIC_CHG_TRACE_BUFF_SZ: | |
2757 | /* trace_buff_sz is 3 bytes, stuff it into an int */ | |
2758 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0; | |
2759 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] = | |
2760 | crq->control_ras_rsp.trace_buff_sz[0]; | |
2761 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] = | |
2762 | crq->control_ras_rsp.trace_buff_sz[1]; | |
2763 | ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] = | |
2764 | crq->control_ras_rsp.trace_buff_sz[2]; | |
2765 | break; | |
2766 | default: | |
2767 | dev_err(dev, "invalid op %d on control_ras_rsp", | |
2768 | crq->control_ras_rsp.op); | |
2769 | } | |
2770 | } | |
2771 | ||
032c5e82 TF |
2772 | static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len, |
2773 | loff_t *ppos) | |
2774 | { | |
2775 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2776 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2777 | struct device *dev = &adapter->vdev->dev; | |
2778 | struct ibmvnic_fw_trace_entry *trace; | |
2779 | int num = ras_comp_int->num; | |
2780 | union ibmvnic_crq crq; | |
2781 | dma_addr_t trace_tok; | |
2782 | ||
2783 | if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size)) | |
2784 | return 0; | |
2785 | ||
2786 | trace = | |
2787 | dma_alloc_coherent(dev, | |
2788 | be32_to_cpu(adapter->ras_comps[num]. | |
2789 | trace_buff_size), &trace_tok, | |
2790 | GFP_KERNEL); | |
2791 | if (!trace) { | |
2792 | dev_err(dev, "Couldn't alloc trace buffer\n"); | |
2793 | return 0; | |
2794 | } | |
2795 | ||
2796 | memset(&crq, 0, sizeof(crq)); | |
2797 | crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD; | |
2798 | crq.collect_fw_trace.cmd = COLLECT_FW_TRACE; | |
2799 | crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator; | |
2800 | crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok); | |
2801 | crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size; | |
2802 | ibmvnic_send_crq(adapter, &crq); | |
2803 | ||
2804 | init_completion(&adapter->fw_done); | |
2805 | wait_for_completion(&adapter->fw_done); | |
2806 | ||
2807 | if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size)) | |
2808 | len = | |
2809 | be32_to_cpu(adapter->ras_comps[num].trace_buff_size) - | |
2810 | *ppos; | |
2811 | ||
2812 | copy_to_user(user_buf, &((u8 *)trace)[*ppos], len); | |
2813 | ||
2814 | dma_free_coherent(dev, | |
2815 | be32_to_cpu(adapter->ras_comps[num].trace_buff_size), | |
2816 | trace, trace_tok); | |
2817 | *ppos += len; | |
2818 | return len; | |
2819 | } | |
2820 | ||
2821 | static const struct file_operations trace_ops = { | |
2822 | .owner = THIS_MODULE, | |
7a95e94c | 2823 | .open = simple_open, |
032c5e82 TF |
2824 | .read = trace_read, |
2825 | }; | |
2826 | ||
2827 | static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len, | |
2828 | loff_t *ppos) | |
2829 | { | |
2830 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2831 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2832 | int num = ras_comp_int->num; | |
2833 | char buff[5]; /* 1 or 0 plus \n and \0 */ | |
2834 | int size; | |
2835 | ||
2836 | size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused); | |
2837 | ||
2838 | if (*ppos >= size) | |
2839 | return 0; | |
2840 | ||
2841 | copy_to_user(user_buf, buff, size); | |
2842 | *ppos += size; | |
2843 | return size; | |
2844 | } | |
2845 | ||
2846 | static ssize_t paused_write(struct file *file, const char __user *user_buf, | |
2847 | size_t len, loff_t *ppos) | |
2848 | { | |
2849 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2850 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2851 | int num = ras_comp_int->num; | |
2852 | union ibmvnic_crq crq; | |
2853 | unsigned long val; | |
2854 | char buff[9]; /* decimal max int plus \n and \0 */ | |
2855 | ||
2856 | copy_from_user(buff, user_buf, sizeof(buff)); | |
2857 | val = kstrtoul(buff, 10, NULL); | |
2858 | ||
2859 | adapter->ras_comp_int[num].paused = val ? 1 : 0; | |
2860 | ||
2861 | memset(&crq, 0, sizeof(crq)); | |
2862 | crq.control_ras.first = IBMVNIC_CRQ_CMD; | |
2863 | crq.control_ras.cmd = CONTROL_RAS; | |
2864 | crq.control_ras.correlator = adapter->ras_comps[num].correlator; | |
2865 | crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME; | |
2866 | ibmvnic_send_crq(adapter, &crq); | |
2867 | ||
2868 | return len; | |
2869 | } | |
2870 | ||
2871 | static const struct file_operations paused_ops = { | |
2872 | .owner = THIS_MODULE, | |
7a95e94c | 2873 | .open = simple_open, |
032c5e82 TF |
2874 | .read = paused_read, |
2875 | .write = paused_write, | |
2876 | }; | |
2877 | ||
2878 | static ssize_t tracing_read(struct file *file, char __user *user_buf, | |
2879 | size_t len, loff_t *ppos) | |
2880 | { | |
2881 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2882 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2883 | int num = ras_comp_int->num; | |
2884 | char buff[5]; /* 1 or 0 plus \n and \0 */ | |
2885 | int size; | |
2886 | ||
2887 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on); | |
2888 | ||
2889 | if (*ppos >= size) | |
2890 | return 0; | |
2891 | ||
2892 | copy_to_user(user_buf, buff, size); | |
2893 | *ppos += size; | |
2894 | return size; | |
2895 | } | |
2896 | ||
2897 | static ssize_t tracing_write(struct file *file, const char __user *user_buf, | |
2898 | size_t len, loff_t *ppos) | |
2899 | { | |
2900 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2901 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2902 | int num = ras_comp_int->num; | |
2903 | union ibmvnic_crq crq; | |
2904 | unsigned long val; | |
2905 | char buff[9]; /* decimal max int plus \n and \0 */ | |
2906 | ||
2907 | copy_from_user(buff, user_buf, sizeof(buff)); | |
2908 | val = kstrtoul(buff, 10, NULL); | |
2909 | ||
2910 | memset(&crq, 0, sizeof(crq)); | |
2911 | crq.control_ras.first = IBMVNIC_CRQ_CMD; | |
2912 | crq.control_ras.cmd = CONTROL_RAS; | |
2913 | crq.control_ras.correlator = adapter->ras_comps[num].correlator; | |
2914 | crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF; | |
2915 | ||
2916 | return len; | |
2917 | } | |
2918 | ||
2919 | static const struct file_operations tracing_ops = { | |
2920 | .owner = THIS_MODULE, | |
7a95e94c | 2921 | .open = simple_open, |
032c5e82 TF |
2922 | .read = tracing_read, |
2923 | .write = tracing_write, | |
2924 | }; | |
2925 | ||
2926 | static ssize_t error_level_read(struct file *file, char __user *user_buf, | |
2927 | size_t len, loff_t *ppos) | |
2928 | { | |
2929 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2930 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2931 | int num = ras_comp_int->num; | |
2932 | char buff[5]; /* decimal max char plus \n and \0 */ | |
2933 | int size; | |
2934 | ||
2935 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level); | |
2936 | ||
2937 | if (*ppos >= size) | |
2938 | return 0; | |
2939 | ||
2940 | copy_to_user(user_buf, buff, size); | |
2941 | *ppos += size; | |
2942 | return size; | |
2943 | } | |
2944 | ||
2945 | static ssize_t error_level_write(struct file *file, const char __user *user_buf, | |
2946 | size_t len, loff_t *ppos) | |
2947 | { | |
2948 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2949 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2950 | int num = ras_comp_int->num; | |
2951 | union ibmvnic_crq crq; | |
2952 | unsigned long val; | |
2953 | char buff[9]; /* decimal max int plus \n and \0 */ | |
2954 | ||
2955 | copy_from_user(buff, user_buf, sizeof(buff)); | |
2956 | val = kstrtoul(buff, 10, NULL); | |
2957 | ||
2958 | if (val > 9) | |
2959 | val = 9; | |
2960 | ||
2961 | memset(&crq, 0, sizeof(crq)); | |
2962 | crq.control_ras.first = IBMVNIC_CRQ_CMD; | |
2963 | crq.control_ras.cmd = CONTROL_RAS; | |
2964 | crq.control_ras.correlator = adapter->ras_comps[num].correlator; | |
2965 | crq.control_ras.op = IBMVNIC_ERROR_LEVEL; | |
2966 | crq.control_ras.level = val; | |
2967 | ibmvnic_send_crq(adapter, &crq); | |
2968 | ||
2969 | return len; | |
2970 | } | |
2971 | ||
2972 | static const struct file_operations error_level_ops = { | |
2973 | .owner = THIS_MODULE, | |
7a95e94c | 2974 | .open = simple_open, |
032c5e82 TF |
2975 | .read = error_level_read, |
2976 | .write = error_level_write, | |
2977 | }; | |
2978 | ||
2979 | static ssize_t trace_level_read(struct file *file, char __user *user_buf, | |
2980 | size_t len, loff_t *ppos) | |
2981 | { | |
2982 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
2983 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
2984 | int num = ras_comp_int->num; | |
2985 | char buff[5]; /* decimal max char plus \n and \0 */ | |
2986 | int size; | |
2987 | ||
2988 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level); | |
2989 | if (*ppos >= size) | |
2990 | return 0; | |
2991 | ||
2992 | copy_to_user(user_buf, buff, size); | |
2993 | *ppos += size; | |
2994 | return size; | |
2995 | } | |
2996 | ||
2997 | static ssize_t trace_level_write(struct file *file, const char __user *user_buf, | |
2998 | size_t len, loff_t *ppos) | |
2999 | { | |
3000 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
3001 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
3002 | union ibmvnic_crq crq; | |
3003 | unsigned long val; | |
3004 | char buff[9]; /* decimal max int plus \n and \0 */ | |
3005 | ||
3006 | copy_from_user(buff, user_buf, sizeof(buff)); | |
3007 | val = kstrtoul(buff, 10, NULL); | |
3008 | if (val > 9) | |
3009 | val = 9; | |
3010 | ||
3011 | memset(&crq, 0, sizeof(crq)); | |
3012 | crq.control_ras.first = IBMVNIC_CRQ_CMD; | |
3013 | crq.control_ras.cmd = CONTROL_RAS; | |
3014 | crq.control_ras.correlator = | |
3015 | adapter->ras_comps[ras_comp_int->num].correlator; | |
3016 | crq.control_ras.op = IBMVNIC_TRACE_LEVEL; | |
3017 | crq.control_ras.level = val; | |
3018 | ibmvnic_send_crq(adapter, &crq); | |
3019 | ||
3020 | return len; | |
3021 | } | |
3022 | ||
3023 | static const struct file_operations trace_level_ops = { | |
3024 | .owner = THIS_MODULE, | |
7a95e94c | 3025 | .open = simple_open, |
032c5e82 TF |
3026 | .read = trace_level_read, |
3027 | .write = trace_level_write, | |
3028 | }; | |
3029 | ||
3030 | static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf, | |
3031 | size_t len, loff_t *ppos) | |
3032 | { | |
3033 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
3034 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
3035 | int num = ras_comp_int->num; | |
3036 | char buff[9]; /* decimal max int plus \n and \0 */ | |
3037 | int size; | |
3038 | ||
3039 | size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size); | |
3040 | if (*ppos >= size) | |
3041 | return 0; | |
3042 | ||
3043 | copy_to_user(user_buf, buff, size); | |
3044 | *ppos += size; | |
3045 | return size; | |
3046 | } | |
3047 | ||
3048 | static ssize_t trace_buff_size_write(struct file *file, | |
3049 | const char __user *user_buf, size_t len, | |
3050 | loff_t *ppos) | |
3051 | { | |
3052 | struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; | |
3053 | struct ibmvnic_adapter *adapter = ras_comp_int->adapter; | |
3054 | union ibmvnic_crq crq; | |
3055 | unsigned long val; | |
3056 | char buff[9]; /* decimal max int plus \n and \0 */ | |
3057 | ||
3058 | copy_from_user(buff, user_buf, sizeof(buff)); | |
3059 | val = kstrtoul(buff, 10, NULL); | |
3060 | ||
3061 | memset(&crq, 0, sizeof(crq)); | |
3062 | crq.control_ras.first = IBMVNIC_CRQ_CMD; | |
3063 | crq.control_ras.cmd = CONTROL_RAS; | |
3064 | crq.control_ras.correlator = | |
3065 | adapter->ras_comps[ras_comp_int->num].correlator; | |
3066 | crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ; | |
3067 | /* trace_buff_sz is 3 bytes, stuff an int into it */ | |
3068 | crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5]; | |
3069 | crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6]; | |
3070 | crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7]; | |
3071 | ibmvnic_send_crq(adapter, &crq); | |
3072 | ||
3073 | return len; | |
3074 | } | |
3075 | ||
3076 | static const struct file_operations trace_size_ops = { | |
3077 | .owner = THIS_MODULE, | |
7a95e94c | 3078 | .open = simple_open, |
032c5e82 TF |
3079 | .read = trace_buff_size_read, |
3080 | .write = trace_buff_size_write, | |
3081 | }; | |
3082 | ||
3083 | static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq, | |
3084 | struct ibmvnic_adapter *adapter) | |
3085 | { | |
3086 | struct device *dev = &adapter->vdev->dev; | |
3087 | struct dentry *dir_ent; | |
3088 | struct dentry *ent; | |
3089 | int i; | |
3090 | ||
3091 | debugfs_remove_recursive(adapter->ras_comps_ent); | |
3092 | ||
3093 | adapter->ras_comps_ent = debugfs_create_dir("ras_comps", | |
3094 | adapter->debugfs_dir); | |
3095 | if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) { | |
3096 | dev_info(dev, "debugfs create ras_comps dir failed\n"); | |
3097 | return; | |
3098 | } | |
3099 | ||
3100 | for (i = 0; i < adapter->ras_comp_num; i++) { | |
3101 | dir_ent = debugfs_create_dir(adapter->ras_comps[i].name, | |
3102 | adapter->ras_comps_ent); | |
3103 | if (!dir_ent || IS_ERR(dir_ent)) { | |
3104 | dev_info(dev, "debugfs create %s dir failed\n", | |
3105 | adapter->ras_comps[i].name); | |
3106 | continue; | |
3107 | } | |
3108 | ||
3109 | adapter->ras_comp_int[i].adapter = adapter; | |
3110 | adapter->ras_comp_int[i].num = i; | |
3111 | adapter->ras_comp_int[i].desc_blob.data = | |
3112 | &adapter->ras_comps[i].description; | |
3113 | adapter->ras_comp_int[i].desc_blob.size = | |
3114 | sizeof(adapter->ras_comps[i].description); | |
3115 | ||
3116 | /* Don't need to remember the dentry's because the debugfs dir | |
3117 | * gets removed recursively | |
3118 | */ | |
3119 | ent = debugfs_create_blob("description", S_IRUGO, dir_ent, | |
3120 | &adapter->ras_comp_int[i].desc_blob); | |
3121 | ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR, | |
3122 | dir_ent, &adapter->ras_comp_int[i], | |
3123 | &trace_size_ops); | |
3124 | ent = debugfs_create_file("trace_level", | |
3125 | S_IRUGO | | |
3126 | (adapter->ras_comps[i].trace_level != | |
3127 | 0xFF ? S_IWUSR : 0), | |
3128 | dir_ent, &adapter->ras_comp_int[i], | |
3129 | &trace_level_ops); | |
3130 | ent = debugfs_create_file("error_level", | |
3131 | S_IRUGO | | |
3132 | (adapter-> | |
3133 | ras_comps[i].error_check_level != | |
3134 | 0xFF ? S_IWUSR : 0), | |
3135 | dir_ent, &adapter->ras_comp_int[i], | |
3136 | &trace_level_ops); | |
3137 | ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR, | |
3138 | dir_ent, &adapter->ras_comp_int[i], | |
3139 | &tracing_ops); | |
3140 | ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR, | |
3141 | dir_ent, &adapter->ras_comp_int[i], | |
3142 | &paused_ops); | |
3143 | ent = debugfs_create_file("trace", S_IRUGO, dir_ent, | |
3144 | &adapter->ras_comp_int[i], | |
3145 | &trace_ops); | |
3146 | } | |
3147 | } | |
3148 | ||
3149 | static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq, | |
3150 | struct ibmvnic_adapter *adapter) | |
3151 | { | |
3152 | int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component); | |
3153 | struct device *dev = &adapter->vdev->dev; | |
3154 | union ibmvnic_crq newcrq; | |
3155 | ||
3156 | adapter->ras_comps = dma_alloc_coherent(dev, len, | |
3157 | &adapter->ras_comps_tok, | |
3158 | GFP_KERNEL); | |
3159 | if (!adapter->ras_comps) { | |
3160 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
3161 | dev_err(dev, "Couldn't alloc fw comps buffer\n"); | |
3162 | return; | |
3163 | } | |
3164 | ||
3165 | adapter->ras_comp_int = kmalloc(adapter->ras_comp_num * | |
3166 | sizeof(struct ibmvnic_fw_comp_internal), | |
3167 | GFP_KERNEL); | |
3168 | if (!adapter->ras_comp_int) | |
3169 | dma_free_coherent(dev, len, adapter->ras_comps, | |
3170 | adapter->ras_comps_tok); | |
3171 | ||
3172 | memset(&newcrq, 0, sizeof(newcrq)); | |
3173 | newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD; | |
3174 | newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS; | |
3175 | newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok); | |
3176 | newcrq.request_ras_comps.len = cpu_to_be32(len); | |
3177 | ibmvnic_send_crq(adapter, &newcrq); | |
3178 | } | |
3179 | ||
3180 | static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) | |
3181 | { | |
96183182 | 3182 | struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1; |
032c5e82 | 3183 | struct device *dev = &adapter->vdev->dev; |
96183182 | 3184 | struct ibmvnic_error_buff *error_buff, *tmp2; |
032c5e82 TF |
3185 | unsigned long flags; |
3186 | unsigned long flags2; | |
3187 | ||
3188 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
96183182 | 3189 | list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) { |
032c5e82 TF |
3190 | switch (inflight_cmd->crq.generic.cmd) { |
3191 | case LOGIN: | |
3192 | dma_unmap_single(dev, adapter->login_buf_token, | |
3193 | adapter->login_buf_sz, | |
3194 | DMA_BIDIRECTIONAL); | |
3195 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
3196 | adapter->login_rsp_buf_sz, | |
3197 | DMA_BIDIRECTIONAL); | |
3198 | kfree(adapter->login_rsp_buf); | |
3199 | kfree(adapter->login_buf); | |
3200 | break; | |
3201 | case REQUEST_DUMP: | |
3202 | complete(&adapter->fw_done); | |
3203 | break; | |
3204 | case REQUEST_ERROR_INFO: | |
3205 | spin_lock_irqsave(&adapter->error_list_lock, flags2); | |
96183182 WY |
3206 | list_for_each_entry_safe(error_buff, tmp2, |
3207 | &adapter->errors, list) { | |
032c5e82 TF |
3208 | dma_unmap_single(dev, error_buff->dma, |
3209 | error_buff->len, | |
3210 | DMA_FROM_DEVICE); | |
3211 | kfree(error_buff->buff); | |
3212 | list_del(&error_buff->list); | |
3213 | kfree(error_buff); | |
3214 | } | |
3215 | spin_unlock_irqrestore(&adapter->error_list_lock, | |
3216 | flags2); | |
3217 | break; | |
3218 | } | |
3219 | list_del(&inflight_cmd->list); | |
3220 | kfree(inflight_cmd); | |
3221 | } | |
3222 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
3223 | } | |
3224 | ||
3225 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, | |
3226 | struct ibmvnic_adapter *adapter) | |
3227 | { | |
3228 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; | |
3229 | struct net_device *netdev = adapter->netdev; | |
3230 | struct device *dev = &adapter->vdev->dev; | |
3231 | long rc; | |
3232 | ||
3233 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", | |
3234 | ((unsigned long int *)crq)[0], | |
3235 | ((unsigned long int *)crq)[1]); | |
3236 | switch (gen_crq->first) { | |
3237 | case IBMVNIC_CRQ_INIT_RSP: | |
3238 | switch (gen_crq->cmd) { | |
3239 | case IBMVNIC_CRQ_INIT: | |
3240 | dev_info(dev, "Partner initialized\n"); | |
3241 | /* Send back a response */ | |
3242 | rc = ibmvnic_send_crq_init_complete(adapter); | |
65dc6891 TF |
3243 | if (!rc) |
3244 | schedule_work(&adapter->vnic_crq_init); | |
032c5e82 TF |
3245 | else |
3246 | dev_err(dev, "Can't send initrsp rc=%ld\n", rc); | |
3247 | break; | |
3248 | case IBMVNIC_CRQ_INIT_COMPLETE: | |
3249 | dev_info(dev, "Partner initialization complete\n"); | |
3250 | send_version_xchg(adapter); | |
3251 | break; | |
3252 | default: | |
3253 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); | |
3254 | } | |
3255 | return; | |
3256 | case IBMVNIC_CRQ_XPORT_EVENT: | |
3257 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { | |
3258 | dev_info(dev, "Re-enabling adapter\n"); | |
3259 | adapter->migrated = true; | |
3260 | ibmvnic_free_inflight(adapter); | |
3261 | release_sub_crqs(adapter); | |
3262 | rc = ibmvnic_reenable_crq_queue(adapter); | |
3263 | if (rc) | |
3264 | dev_err(dev, "Error after enable rc=%ld\n", rc); | |
3265 | adapter->migrated = false; | |
3266 | rc = ibmvnic_send_crq_init(adapter); | |
3267 | if (rc) | |
3268 | dev_err(dev, "Error sending init rc=%ld\n", rc); | |
dfad09a6 TF |
3269 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
3270 | dev_info(dev, "Backing device failover detected\n"); | |
3271 | netif_carrier_off(netdev); | |
3272 | adapter->failover = true; | |
032c5e82 TF |
3273 | } else { |
3274 | /* The adapter lost the connection */ | |
3275 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", | |
3276 | gen_crq->cmd); | |
3277 | ibmvnic_free_inflight(adapter); | |
3278 | release_sub_crqs(adapter); | |
3279 | } | |
3280 | return; | |
3281 | case IBMVNIC_CRQ_CMD_RSP: | |
3282 | break; | |
3283 | default: | |
3284 | dev_err(dev, "Got an invalid msg type 0x%02x\n", | |
3285 | gen_crq->first); | |
3286 | return; | |
3287 | } | |
3288 | ||
3289 | switch (gen_crq->cmd) { | |
3290 | case VERSION_EXCHANGE_RSP: | |
3291 | rc = crq->version_exchange_rsp.rc.code; | |
3292 | if (rc) { | |
3293 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); | |
3294 | break; | |
3295 | } | |
3296 | dev_info(dev, "Partner protocol version is %d\n", | |
3297 | crq->version_exchange_rsp.version); | |
3298 | if (be16_to_cpu(crq->version_exchange_rsp.version) < | |
3299 | ibmvnic_version) | |
3300 | ibmvnic_version = | |
3301 | be16_to_cpu(crq->version_exchange_rsp.version); | |
3302 | send_cap_queries(adapter); | |
3303 | break; | |
3304 | case QUERY_CAPABILITY_RSP: | |
3305 | handle_query_cap_rsp(crq, adapter); | |
3306 | break; | |
3307 | case QUERY_MAP_RSP: | |
3308 | handle_query_map_rsp(crq, adapter); | |
3309 | break; | |
3310 | case REQUEST_MAP_RSP: | |
3311 | handle_request_map_rsp(crq, adapter); | |
3312 | break; | |
3313 | case REQUEST_UNMAP_RSP: | |
3314 | handle_request_unmap_rsp(crq, adapter); | |
3315 | break; | |
3316 | case REQUEST_CAPABILITY_RSP: | |
3317 | handle_request_cap_rsp(crq, adapter); | |
3318 | break; | |
3319 | case LOGIN_RSP: | |
3320 | netdev_dbg(netdev, "Got Login Response\n"); | |
3321 | handle_login_rsp(crq, adapter); | |
3322 | break; | |
3323 | case LOGICAL_LINK_STATE_RSP: | |
3324 | netdev_dbg(netdev, "Got Logical Link State Response\n"); | |
3325 | adapter->logical_link_state = | |
3326 | crq->logical_link_state_rsp.link_state; | |
3327 | break; | |
3328 | case LINK_STATE_INDICATION: | |
3329 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); | |
3330 | adapter->phys_link_state = | |
3331 | crq->link_state_indication.phys_link_state; | |
3332 | adapter->logical_link_state = | |
3333 | crq->link_state_indication.logical_link_state; | |
3334 | break; | |
3335 | case CHANGE_MAC_ADDR_RSP: | |
3336 | netdev_dbg(netdev, "Got MAC address change Response\n"); | |
3337 | handle_change_mac_rsp(crq, adapter); | |
3338 | break; | |
3339 | case ERROR_INDICATION: | |
3340 | netdev_dbg(netdev, "Got Error Indication\n"); | |
3341 | handle_error_indication(crq, adapter); | |
3342 | break; | |
3343 | case REQUEST_ERROR_RSP: | |
3344 | netdev_dbg(netdev, "Got Error Detail Response\n"); | |
3345 | handle_error_info_rsp(crq, adapter); | |
3346 | break; | |
3347 | case REQUEST_STATISTICS_RSP: | |
3348 | netdev_dbg(netdev, "Got Statistics Response\n"); | |
3349 | complete(&adapter->stats_done); | |
3350 | break; | |
3351 | case REQUEST_DUMP_SIZE_RSP: | |
3352 | netdev_dbg(netdev, "Got Request Dump Size Response\n"); | |
3353 | handle_dump_size_rsp(crq, adapter); | |
3354 | break; | |
3355 | case REQUEST_DUMP_RSP: | |
3356 | netdev_dbg(netdev, "Got Request Dump Response\n"); | |
3357 | complete(&adapter->fw_done); | |
3358 | break; | |
3359 | case QUERY_IP_OFFLOAD_RSP: | |
3360 | netdev_dbg(netdev, "Got Query IP offload Response\n"); | |
3361 | handle_query_ip_offload_rsp(adapter); | |
3362 | break; | |
3363 | case MULTICAST_CTRL_RSP: | |
3364 | netdev_dbg(netdev, "Got multicast control Response\n"); | |
3365 | break; | |
3366 | case CONTROL_IP_OFFLOAD_RSP: | |
3367 | netdev_dbg(netdev, "Got Control IP offload Response\n"); | |
3368 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, | |
3369 | sizeof(adapter->ip_offload_ctrl), | |
3370 | DMA_TO_DEVICE); | |
3371 | /* We're done with the queries, perform the login */ | |
3372 | send_login(adapter); | |
3373 | break; | |
3374 | case REQUEST_RAS_COMP_NUM_RSP: | |
3375 | netdev_dbg(netdev, "Got Request RAS Comp Num Response\n"); | |
3376 | if (crq->request_ras_comp_num_rsp.rc.code == 10) { | |
3377 | netdev_dbg(netdev, "Request RAS Comp Num not supported\n"); | |
3378 | break; | |
3379 | } | |
3380 | adapter->ras_comp_num = | |
3381 | be32_to_cpu(crq->request_ras_comp_num_rsp.num_components); | |
3382 | handle_request_ras_comp_num_rsp(crq, adapter); | |
3383 | break; | |
3384 | case REQUEST_RAS_COMPS_RSP: | |
3385 | netdev_dbg(netdev, "Got Request RAS Comps Response\n"); | |
3386 | handle_request_ras_comps_rsp(crq, adapter); | |
3387 | break; | |
3388 | case CONTROL_RAS_RSP: | |
3389 | netdev_dbg(netdev, "Got Control RAS Response\n"); | |
3390 | handle_control_ras_rsp(crq, adapter); | |
3391 | break; | |
3392 | case COLLECT_FW_TRACE_RSP: | |
3393 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); | |
3394 | complete(&adapter->fw_done); | |
3395 | break; | |
3396 | default: | |
3397 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", | |
3398 | gen_crq->cmd); | |
3399 | } | |
3400 | } | |
3401 | ||
3402 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) | |
3403 | { | |
3404 | struct ibmvnic_adapter *adapter = instance; | |
3405 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
3406 | struct vio_dev *vdev = adapter->vdev; | |
3407 | union ibmvnic_crq *crq; | |
3408 | unsigned long flags; | |
3409 | bool done = false; | |
3410 | ||
3411 | spin_lock_irqsave(&queue->lock, flags); | |
3412 | vio_disable_interrupts(vdev); | |
3413 | while (!done) { | |
3414 | /* Pull all the valid messages off the CRQ */ | |
3415 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { | |
3416 | ibmvnic_handle_crq(crq, adapter); | |
3417 | crq->generic.first = 0; | |
3418 | } | |
3419 | vio_enable_interrupts(vdev); | |
3420 | crq = ibmvnic_next_crq(adapter); | |
3421 | if (crq) { | |
3422 | vio_disable_interrupts(vdev); | |
3423 | ibmvnic_handle_crq(crq, adapter); | |
3424 | crq->generic.first = 0; | |
3425 | } else { | |
3426 | done = true; | |
3427 | } | |
3428 | } | |
3429 | spin_unlock_irqrestore(&queue->lock, flags); | |
3430 | return IRQ_HANDLED; | |
3431 | } | |
3432 | ||
3433 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) | |
3434 | { | |
3435 | struct vio_dev *vdev = adapter->vdev; | |
3436 | int rc; | |
3437 | ||
3438 | do { | |
3439 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); | |
3440 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3441 | ||
3442 | if (rc) | |
3443 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); | |
3444 | ||
3445 | return rc; | |
3446 | } | |
3447 | ||
3448 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) | |
3449 | { | |
3450 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3451 | struct device *dev = &adapter->vdev->dev; | |
3452 | struct vio_dev *vdev = adapter->vdev; | |
3453 | int rc; | |
3454 | ||
3455 | /* Close the CRQ */ | |
3456 | do { | |
3457 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3458 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3459 | ||
3460 | /* Clean out the queue */ | |
3461 | memset(crq->msgs, 0, PAGE_SIZE); | |
3462 | crq->cur = 0; | |
3463 | ||
3464 | /* And re-open it again */ | |
3465 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3466 | crq->msg_token, PAGE_SIZE); | |
3467 | ||
3468 | if (rc == H_CLOSED) | |
3469 | /* Adapter is good, but other end is not ready */ | |
3470 | dev_warn(dev, "Partner adapter not ready\n"); | |
3471 | else if (rc != 0) | |
3472 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); | |
3473 | ||
3474 | return rc; | |
3475 | } | |
3476 | ||
3477 | static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter) | |
3478 | { | |
3479 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3480 | struct vio_dev *vdev = adapter->vdev; | |
3481 | long rc; | |
3482 | ||
3483 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); | |
3484 | free_irq(vdev->irq, adapter); | |
3485 | do { | |
3486 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3487 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3488 | ||
3489 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, | |
3490 | DMA_BIDIRECTIONAL); | |
3491 | free_page((unsigned long)crq->msgs); | |
3492 | } | |
3493 | ||
3494 | static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter) | |
3495 | { | |
3496 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3497 | struct device *dev = &adapter->vdev->dev; | |
3498 | struct vio_dev *vdev = adapter->vdev; | |
3499 | int rc, retrc = -ENOMEM; | |
3500 | ||
3501 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); | |
3502 | /* Should we allocate more than one page? */ | |
3503 | ||
3504 | if (!crq->msgs) | |
3505 | return -ENOMEM; | |
3506 | ||
3507 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); | |
3508 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, | |
3509 | DMA_BIDIRECTIONAL); | |
3510 | if (dma_mapping_error(dev, crq->msg_token)) | |
3511 | goto map_failed; | |
3512 | ||
3513 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3514 | crq->msg_token, PAGE_SIZE); | |
3515 | ||
3516 | if (rc == H_RESOURCE) | |
3517 | /* maybe kexecing and resource is busy. try a reset */ | |
3518 | rc = ibmvnic_reset_crq(adapter); | |
3519 | retrc = rc; | |
3520 | ||
3521 | if (rc == H_CLOSED) { | |
3522 | dev_warn(dev, "Partner adapter not ready\n"); | |
3523 | } else if (rc) { | |
3524 | dev_warn(dev, "Error %d opening adapter\n", rc); | |
3525 | goto reg_crq_failed; | |
3526 | } | |
3527 | ||
3528 | retrc = 0; | |
3529 | ||
3530 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); | |
3531 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, | |
3532 | adapter); | |
3533 | if (rc) { | |
3534 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", | |
3535 | vdev->irq, rc); | |
3536 | goto req_irq_failed; | |
3537 | } | |
3538 | ||
3539 | rc = vio_enable_interrupts(vdev); | |
3540 | if (rc) { | |
3541 | dev_err(dev, "Error %d enabling interrupts\n", rc); | |
3542 | goto req_irq_failed; | |
3543 | } | |
3544 | ||
3545 | crq->cur = 0; | |
3546 | spin_lock_init(&crq->lock); | |
3547 | ||
3548 | return retrc; | |
3549 | ||
3550 | req_irq_failed: | |
3551 | do { | |
3552 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3553 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3554 | reg_crq_failed: | |
3555 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
3556 | map_failed: | |
3557 | free_page((unsigned long)crq->msgs); | |
3558 | return retrc; | |
3559 | } | |
3560 | ||
3561 | /* debugfs for dump */ | |
3562 | static int ibmvnic_dump_show(struct seq_file *seq, void *v) | |
3563 | { | |
3564 | struct net_device *netdev = seq->private; | |
3565 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3566 | struct device *dev = &adapter->vdev->dev; | |
3567 | union ibmvnic_crq crq; | |
3568 | ||
3569 | memset(&crq, 0, sizeof(crq)); | |
3570 | crq.request_dump_size.first = IBMVNIC_CRQ_CMD; | |
3571 | crq.request_dump_size.cmd = REQUEST_DUMP_SIZE; | |
3572 | ibmvnic_send_crq(adapter, &crq); | |
3573 | ||
3574 | init_completion(&adapter->fw_done); | |
3575 | wait_for_completion(&adapter->fw_done); | |
3576 | ||
3577 | seq_write(seq, adapter->dump_data, adapter->dump_data_size); | |
3578 | ||
3579 | dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size, | |
3580 | DMA_BIDIRECTIONAL); | |
3581 | ||
3582 | kfree(adapter->dump_data); | |
3583 | ||
3584 | return 0; | |
3585 | } | |
3586 | ||
3587 | static int ibmvnic_dump_open(struct inode *inode, struct file *file) | |
3588 | { | |
3589 | return single_open(file, ibmvnic_dump_show, inode->i_private); | |
3590 | } | |
3591 | ||
3592 | static const struct file_operations ibmvnic_dump_ops = { | |
3593 | .owner = THIS_MODULE, | |
3594 | .open = ibmvnic_dump_open, | |
3595 | .read = seq_read, | |
3596 | .llseek = seq_lseek, | |
3597 | .release = single_release, | |
3598 | }; | |
3599 | ||
65dc6891 TF |
3600 | static void handle_crq_init_rsp(struct work_struct *work) |
3601 | { | |
3602 | struct ibmvnic_adapter *adapter = container_of(work, | |
3603 | struct ibmvnic_adapter, | |
3604 | vnic_crq_init); | |
3605 | struct device *dev = &adapter->vdev->dev; | |
3606 | struct net_device *netdev = adapter->netdev; | |
3607 | unsigned long timeout = msecs_to_jiffies(30000); | |
dfad09a6 | 3608 | bool restart = false; |
65dc6891 TF |
3609 | int rc; |
3610 | ||
dfad09a6 TF |
3611 | if (adapter->failover) { |
3612 | release_sub_crqs(adapter); | |
3613 | if (netif_running(netdev)) { | |
3614 | netif_tx_disable(netdev); | |
3615 | ibmvnic_close(netdev); | |
3616 | restart = true; | |
3617 | } | |
3618 | } | |
3619 | ||
65dc6891 TF |
3620 | send_version_xchg(adapter); |
3621 | reinit_completion(&adapter->init_done); | |
3622 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
3623 | dev_err(dev, "Passive init timeout\n"); | |
3624 | goto task_failed; | |
3625 | } | |
3626 | ||
3627 | do { | |
3628 | if (adapter->renegotiate) { | |
3629 | adapter->renegotiate = false; | |
3630 | release_sub_crqs_no_irqs(adapter); | |
3631 | send_cap_queries(adapter); | |
3632 | ||
3633 | reinit_completion(&adapter->init_done); | |
3634 | if (!wait_for_completion_timeout(&adapter->init_done, | |
3635 | timeout)) { | |
3636 | dev_err(dev, "Passive init timeout\n"); | |
3637 | goto task_failed; | |
3638 | } | |
3639 | } | |
3640 | } while (adapter->renegotiate); | |
3641 | rc = init_sub_crq_irqs(adapter); | |
3642 | ||
3643 | if (rc) | |
3644 | goto task_failed; | |
3645 | ||
3646 | netdev->real_num_tx_queues = adapter->req_tx_queues; | |
d894be57 JW |
3647 | netdev->min_mtu = adapter->min_mtu; |
3648 | netdev->max_mtu = adapter->max_mtu; | |
65dc6891 | 3649 | |
dfad09a6 TF |
3650 | if (adapter->failover) { |
3651 | adapter->failover = false; | |
3652 | if (restart) { | |
3653 | rc = ibmvnic_open(netdev); | |
3654 | if (rc) | |
3655 | goto restart_failed; | |
3656 | } | |
3657 | netif_carrier_on(netdev); | |
3658 | return; | |
3659 | } | |
3660 | ||
65dc6891 TF |
3661 | rc = register_netdev(netdev); |
3662 | if (rc) { | |
3663 | dev_err(dev, | |
3664 | "failed to register netdev rc=%d\n", rc); | |
3665 | goto register_failed; | |
3666 | } | |
3667 | dev_info(dev, "ibmvnic registered\n"); | |
3668 | ||
3669 | return; | |
3670 | ||
dfad09a6 TF |
3671 | restart_failed: |
3672 | dev_err(dev, "Failed to restart ibmvnic, rc=%d\n", rc); | |
65dc6891 TF |
3673 | register_failed: |
3674 | release_sub_crqs(adapter); | |
3675 | task_failed: | |
3676 | dev_err(dev, "Passive initialization was not successful\n"); | |
3677 | } | |
3678 | ||
032c5e82 TF |
3679 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) |
3680 | { | |
ea22d51a | 3681 | unsigned long timeout = msecs_to_jiffies(30000); |
032c5e82 TF |
3682 | struct ibmvnic_adapter *adapter; |
3683 | struct net_device *netdev; | |
3684 | unsigned char *mac_addr_p; | |
3685 | struct dentry *ent; | |
3686 | char buf[16]; /* debugfs name buf */ | |
3687 | int rc; | |
3688 | ||
3689 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", | |
3690 | dev->unit_address); | |
3691 | ||
3692 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, | |
3693 | VETH_MAC_ADDR, NULL); | |
3694 | if (!mac_addr_p) { | |
3695 | dev_err(&dev->dev, | |
3696 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", | |
3697 | __FILE__, __LINE__); | |
3698 | return 0; | |
3699 | } | |
3700 | ||
3701 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), | |
3702 | IBMVNIC_MAX_TX_QUEUES); | |
3703 | if (!netdev) | |
3704 | return -ENOMEM; | |
3705 | ||
3706 | adapter = netdev_priv(netdev); | |
3707 | dev_set_drvdata(&dev->dev, netdev); | |
3708 | adapter->vdev = dev; | |
3709 | adapter->netdev = netdev; | |
dfad09a6 | 3710 | adapter->failover = false; |
032c5e82 TF |
3711 | |
3712 | ether_addr_copy(adapter->mac_addr, mac_addr_p); | |
3713 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); | |
3714 | netdev->irq = dev->irq; | |
3715 | netdev->netdev_ops = &ibmvnic_netdev_ops; | |
3716 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; | |
3717 | SET_NETDEV_DEV(netdev, &dev->dev); | |
3718 | ||
65dc6891 TF |
3719 | INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp); |
3720 | ||
032c5e82 TF |
3721 | spin_lock_init(&adapter->stats_lock); |
3722 | ||
3723 | rc = ibmvnic_init_crq_queue(adapter); | |
3724 | if (rc) { | |
3725 | dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc); | |
3726 | goto free_netdev; | |
3727 | } | |
3728 | ||
3729 | INIT_LIST_HEAD(&adapter->errors); | |
3730 | INIT_LIST_HEAD(&adapter->inflight); | |
3731 | spin_lock_init(&adapter->error_list_lock); | |
3732 | spin_lock_init(&adapter->inflight_lock); | |
3733 | ||
3734 | adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats, | |
3735 | sizeof(struct ibmvnic_statistics), | |
3736 | DMA_FROM_DEVICE); | |
3737 | if (dma_mapping_error(&dev->dev, adapter->stats_token)) { | |
3738 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
3739 | dev_err(&dev->dev, "Couldn't map stats buffer\n"); | |
0e87203a | 3740 | rc = -ENOMEM; |
032c5e82 TF |
3741 | goto free_crq; |
3742 | } | |
3743 | ||
3744 | snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address); | |
3745 | ent = debugfs_create_dir(buf, NULL); | |
3746 | if (!ent || IS_ERR(ent)) { | |
3747 | dev_info(&dev->dev, "debugfs create directory failed\n"); | |
3748 | adapter->debugfs_dir = NULL; | |
3749 | } else { | |
3750 | adapter->debugfs_dir = ent; | |
3751 | ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir, | |
3752 | netdev, &ibmvnic_dump_ops); | |
3753 | if (!ent || IS_ERR(ent)) { | |
3754 | dev_info(&dev->dev, | |
3755 | "debugfs create dump file failed\n"); | |
3756 | adapter->debugfs_dump = NULL; | |
3757 | } else { | |
3758 | adapter->debugfs_dump = ent; | |
3759 | } | |
3760 | } | |
3761 | ibmvnic_send_crq_init(adapter); | |
3762 | ||
3763 | init_completion(&adapter->init_done); | |
ea22d51a TF |
3764 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) |
3765 | return 0; | |
032c5e82 | 3766 | |
498cd8e4 | 3767 | do { |
498cd8e4 | 3768 | if (adapter->renegotiate) { |
ea22d51a TF |
3769 | adapter->renegotiate = false; |
3770 | release_sub_crqs_no_irqs(adapter); | |
498cd8e4 JA |
3771 | send_cap_queries(adapter); |
3772 | ||
3773 | reinit_completion(&adapter->init_done); | |
ea22d51a TF |
3774 | if (!wait_for_completion_timeout(&adapter->init_done, |
3775 | timeout)) | |
3776 | return 0; | |
498cd8e4 JA |
3777 | } |
3778 | } while (adapter->renegotiate); | |
032c5e82 | 3779 | |
ea22d51a TF |
3780 | rc = init_sub_crq_irqs(adapter); |
3781 | if (rc) { | |
3782 | dev_err(&dev->dev, "failed to initialize sub crq irqs\n"); | |
3783 | goto free_debugfs; | |
032c5e82 TF |
3784 | } |
3785 | ||
3786 | netdev->real_num_tx_queues = adapter->req_tx_queues; | |
3787 | ||
3788 | rc = register_netdev(netdev); | |
3789 | if (rc) { | |
3790 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); | |
ea22d51a | 3791 | goto free_sub_crqs; |
032c5e82 TF |
3792 | } |
3793 | dev_info(&dev->dev, "ibmvnic registered\n"); | |
3794 | ||
3795 | return 0; | |
3796 | ||
ea22d51a TF |
3797 | free_sub_crqs: |
3798 | release_sub_crqs(adapter); | |
032c5e82 TF |
3799 | free_debugfs: |
3800 | if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir)) | |
3801 | debugfs_remove_recursive(adapter->debugfs_dir); | |
3802 | free_crq: | |
3803 | ibmvnic_release_crq_queue(adapter); | |
3804 | free_netdev: | |
3805 | free_netdev(netdev); | |
3806 | return rc; | |
3807 | } | |
3808 | ||
3809 | static int ibmvnic_remove(struct vio_dev *dev) | |
3810 | { | |
3811 | struct net_device *netdev = dev_get_drvdata(&dev->dev); | |
3812 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3813 | ||
3814 | unregister_netdev(netdev); | |
3815 | ||
3816 | release_sub_crqs(adapter); | |
3817 | ||
3818 | ibmvnic_release_crq_queue(adapter); | |
3819 | ||
3820 | if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir)) | |
3821 | debugfs_remove_recursive(adapter->debugfs_dir); | |
3822 | ||
3823 | if (adapter->ras_comps) | |
3824 | dma_free_coherent(&dev->dev, | |
3825 | adapter->ras_comp_num * | |
3826 | sizeof(struct ibmvnic_fw_component), | |
3827 | adapter->ras_comps, adapter->ras_comps_tok); | |
3828 | ||
3829 | kfree(adapter->ras_comp_int); | |
3830 | ||
3831 | free_netdev(netdev); | |
3832 | dev_set_drvdata(&dev->dev, NULL); | |
3833 | ||
3834 | return 0; | |
3835 | } | |
3836 | ||
3837 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) | |
3838 | { | |
3839 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
3840 | struct ibmvnic_adapter *adapter; | |
3841 | struct iommu_table *tbl; | |
3842 | unsigned long ret = 0; | |
3843 | int i; | |
3844 | ||
3845 | tbl = get_iommu_table_base(&vdev->dev); | |
3846 | ||
3847 | /* netdev inits at probe time along with the structures we need below*/ | |
3848 | if (!netdev) | |
3849 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); | |
3850 | ||
3851 | adapter = netdev_priv(netdev); | |
3852 | ||
3853 | ret += PAGE_SIZE; /* the crq message queue */ | |
3854 | ret += adapter->bounce_buffer_size; | |
3855 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); | |
3856 | ||
3857 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) | |
3858 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ | |
3859 | ||
3860 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
3861 | i++) | |
3862 | ret += adapter->rx_pool[i].size * | |
3863 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); | |
3864 | ||
3865 | return ret; | |
3866 | } | |
3867 | ||
3868 | static int ibmvnic_resume(struct device *dev) | |
3869 | { | |
3870 | struct net_device *netdev = dev_get_drvdata(dev); | |
3871 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3872 | int i; | |
3873 | ||
3874 | /* kick the interrupt handlers just in case we lost an interrupt */ | |
3875 | for (i = 0; i < adapter->req_rx_queues; i++) | |
3876 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
3877 | adapter->rx_scrq[i]); | |
3878 | ||
3879 | return 0; | |
3880 | } | |
3881 | ||
3882 | static struct vio_device_id ibmvnic_device_table[] = { | |
3883 | {"network", "IBM,vnic"}, | |
3884 | {"", "" } | |
3885 | }; | |
3886 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); | |
3887 | ||
3888 | static const struct dev_pm_ops ibmvnic_pm_ops = { | |
3889 | .resume = ibmvnic_resume | |
3890 | }; | |
3891 | ||
3892 | static struct vio_driver ibmvnic_driver = { | |
3893 | .id_table = ibmvnic_device_table, | |
3894 | .probe = ibmvnic_probe, | |
3895 | .remove = ibmvnic_remove, | |
3896 | .get_desired_dma = ibmvnic_get_desired_dma, | |
3897 | .name = ibmvnic_driver_name, | |
3898 | .pm = &ibmvnic_pm_ops, | |
3899 | }; | |
3900 | ||
3901 | /* module functions */ | |
3902 | static int __init ibmvnic_module_init(void) | |
3903 | { | |
3904 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, | |
3905 | IBMVNIC_DRIVER_VERSION); | |
3906 | ||
3907 | return vio_register_driver(&ibmvnic_driver); | |
3908 | } | |
3909 | ||
3910 | static void __exit ibmvnic_module_exit(void) | |
3911 | { | |
3912 | vio_unregister_driver(&ibmvnic_driver); | |
3913 | } | |
3914 | ||
3915 | module_init(ibmvnic_module_init); | |
3916 | module_exit(ibmvnic_module_exit); |