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