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