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032c5e82 TF |
1 | /**************************************************************************/ |
2 | /* */ | |
3 | /* IBM System i and System p Virtual NIC Device Driver */ | |
4 | /* Copyright (C) 2014 IBM Corp. */ | |
5 | /* Santiago Leon (santi_leon@yahoo.com) */ | |
6 | /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */ | |
7 | /* John Allen (jallen@linux.vnet.ibm.com) */ | |
8 | /* */ | |
9 | /* This program is free software; you can redistribute it and/or modify */ | |
10 | /* it under the terms of the GNU General Public License as published by */ | |
11 | /* the Free Software Foundation; either version 2 of the License, or */ | |
12 | /* (at your option) any later version. */ | |
13 | /* */ | |
14 | /* This program is distributed in the hope that it will be useful, */ | |
15 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ | |
16 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ | |
17 | /* GNU General Public License for more details. */ | |
18 | /* */ | |
19 | /* You should have received a copy of the GNU General Public License */ | |
20 | /* along with this program. */ | |
21 | /* */ | |
22 | /* This module contains the implementation of a virtual ethernet device */ | |
23 | /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */ | |
24 | /* option of the RS/6000 Platform Architecture to interface with virtual */ | |
25 | /* ethernet NICs that are presented to the partition by the hypervisor. */ | |
26 | /* */ | |
27 | /* Messages are passed between the VNIC driver and the VNIC server using */ | |
28 | /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */ | |
29 | /* issue and receive commands that initiate communication with the server */ | |
30 | /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */ | |
31 | /* are used by the driver to notify the server that a packet is */ | |
32 | /* ready for transmission or that a buffer has been added to receive a */ | |
33 | /* packet. Subsequently, sCRQs are used by the server to notify the */ | |
34 | /* driver that a packet transmission has been completed or that a packet */ | |
35 | /* has been received and placed in a waiting buffer. */ | |
36 | /* */ | |
37 | /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */ | |
38 | /* which skbs are DMA mapped and immediately unmapped when the transmit */ | |
39 | /* or receive has been completed, the VNIC driver is required to use */ | |
40 | /* "long term mapping". This entails that large, continuous DMA mapped */ | |
41 | /* buffers are allocated on driver initialization and these buffers are */ | |
42 | /* then continuously reused to pass skbs to and from the VNIC server. */ | |
43 | /* */ | |
44 | /**************************************************************************/ | |
45 | ||
46 | #include <linux/module.h> | |
47 | #include <linux/moduleparam.h> | |
48 | #include <linux/types.h> | |
49 | #include <linux/errno.h> | |
50 | #include <linux/completion.h> | |
51 | #include <linux/ioport.h> | |
52 | #include <linux/dma-mapping.h> | |
53 | #include <linux/kernel.h> | |
54 | #include <linux/netdevice.h> | |
55 | #include <linux/etherdevice.h> | |
56 | #include <linux/skbuff.h> | |
57 | #include <linux/init.h> | |
58 | #include <linux/delay.h> | |
59 | #include <linux/mm.h> | |
60 | #include <linux/ethtool.h> | |
61 | #include <linux/proc_fs.h> | |
62 | #include <linux/in.h> | |
63 | #include <linux/ip.h> | |
ad7775dc | 64 | #include <linux/ipv6.h> |
032c5e82 TF |
65 | #include <linux/irq.h> |
66 | #include <linux/kthread.h> | |
67 | #include <linux/seq_file.h> | |
032c5e82 TF |
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> | |
65dc6891 | 76 | #include <linux/workqueue.h> |
032c5e82 TF |
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 *); | |
ea22d51a | 91 | static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *); |
032c5e82 TF |
92 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); |
93 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); | |
94 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); | |
95 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); | |
96 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
97 | union sub_crq *sub_crq); | |
ad7775dc | 98 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
032c5e82 TF |
99 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
100 | static int enable_scrq_irq(struct ibmvnic_adapter *, | |
101 | struct ibmvnic_sub_crq_queue *); | |
102 | static int disable_scrq_irq(struct ibmvnic_adapter *, | |
103 | struct ibmvnic_sub_crq_queue *); | |
104 | static int pending_scrq(struct ibmvnic_adapter *, | |
105 | struct ibmvnic_sub_crq_queue *); | |
106 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, | |
107 | struct ibmvnic_sub_crq_queue *); | |
108 | static int ibmvnic_poll(struct napi_struct *napi, int data); | |
109 | static void send_map_query(struct ibmvnic_adapter *adapter); | |
110 | static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); | |
111 | static void send_request_unmap(struct ibmvnic_adapter *, u8); | |
bd0b6723 JA |
112 | static void send_login(struct ibmvnic_adapter *adapter); |
113 | static void send_cap_queries(struct ibmvnic_adapter *adapter); | |
114 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter); | |
ea5509f5 | 115 | static int ibmvnic_init(struct ibmvnic_adapter *); |
f992887c | 116 | static void release_crq_queue(struct ibmvnic_adapter *); |
032c5e82 TF |
117 | |
118 | struct ibmvnic_stat { | |
119 | char name[ETH_GSTRING_LEN]; | |
120 | int offset; | |
121 | }; | |
122 | ||
123 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ | |
124 | offsetof(struct ibmvnic_statistics, stat)) | |
125 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) | |
126 | ||
127 | static const struct ibmvnic_stat ibmvnic_stats[] = { | |
128 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, | |
129 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, | |
130 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, | |
131 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, | |
132 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, | |
133 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, | |
134 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, | |
135 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, | |
136 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, | |
137 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, | |
138 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, | |
139 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, | |
140 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, | |
141 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, | |
142 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, | |
143 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, | |
144 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, | |
145 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, | |
146 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, | |
147 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, | |
148 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, | |
149 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, | |
150 | }; | |
151 | ||
152 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, | |
153 | unsigned long length, unsigned long *number, | |
154 | unsigned long *irq) | |
155 | { | |
156 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
157 | long rc; | |
158 | ||
159 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); | |
160 | *number = retbuf[0]; | |
161 | *irq = retbuf[1]; | |
162 | ||
163 | return rc; | |
164 | } | |
165 | ||
166 | /* net_device_ops functions */ | |
167 | ||
168 | static void init_rx_pool(struct ibmvnic_adapter *adapter, | |
169 | struct ibmvnic_rx_pool *rx_pool, int num, int index, | |
170 | int buff_size, int active) | |
171 | { | |
172 | netdev_dbg(adapter->netdev, | |
173 | "Initializing rx_pool %d, %d buffs, %d bytes each\n", | |
174 | index, num, buff_size); | |
175 | rx_pool->size = num; | |
176 | rx_pool->index = index; | |
177 | rx_pool->buff_size = buff_size; | |
178 | rx_pool->active = active; | |
179 | } | |
180 | ||
181 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, | |
182 | struct ibmvnic_long_term_buff *ltb, int size) | |
183 | { | |
184 | struct device *dev = &adapter->vdev->dev; | |
185 | ||
186 | ltb->size = size; | |
187 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, | |
188 | GFP_KERNEL); | |
189 | ||
190 | if (!ltb->buff) { | |
191 | dev_err(dev, "Couldn't alloc long term buffer\n"); | |
192 | return -ENOMEM; | |
193 | } | |
194 | ltb->map_id = adapter->map_id; | |
195 | adapter->map_id++; | |
db5d0b59 NF |
196 | |
197 | init_completion(&adapter->fw_done); | |
032c5e82 TF |
198 | send_request_map(adapter, ltb->addr, |
199 | ltb->size, ltb->map_id); | |
032c5e82 TF |
200 | wait_for_completion(&adapter->fw_done); |
201 | return 0; | |
202 | } | |
203 | ||
204 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, | |
205 | struct ibmvnic_long_term_buff *ltb) | |
206 | { | |
207 | struct device *dev = &adapter->vdev->dev; | |
208 | ||
209 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); | |
dfad09a6 TF |
210 | if (!adapter->failover) |
211 | send_request_unmap(adapter, ltb->map_id); | |
032c5e82 TF |
212 | } |
213 | ||
214 | static int alloc_rx_pool(struct ibmvnic_adapter *adapter, | |
215 | struct ibmvnic_rx_pool *pool) | |
216 | { | |
217 | struct device *dev = &adapter->vdev->dev; | |
218 | int i; | |
219 | ||
220 | pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL); | |
221 | if (!pool->free_map) | |
222 | return -ENOMEM; | |
223 | ||
224 | pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff), | |
225 | GFP_KERNEL); | |
226 | ||
227 | if (!pool->rx_buff) { | |
228 | dev_err(dev, "Couldn't alloc rx buffers\n"); | |
229 | kfree(pool->free_map); | |
230 | return -ENOMEM; | |
231 | } | |
232 | ||
233 | if (alloc_long_term_buff(adapter, &pool->long_term_buff, | |
234 | pool->size * pool->buff_size)) { | |
235 | kfree(pool->free_map); | |
236 | kfree(pool->rx_buff); | |
237 | return -ENOMEM; | |
238 | } | |
239 | ||
240 | for (i = 0; i < pool->size; ++i) | |
241 | pool->free_map[i] = i; | |
242 | ||
243 | atomic_set(&pool->available, 0); | |
244 | pool->next_alloc = 0; | |
245 | pool->next_free = 0; | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, | |
251 | struct ibmvnic_rx_pool *pool) | |
252 | { | |
253 | int count = pool->size - atomic_read(&pool->available); | |
254 | struct device *dev = &adapter->vdev->dev; | |
255 | int buffers_added = 0; | |
256 | unsigned long lpar_rc; | |
257 | union sub_crq sub_crq; | |
258 | struct sk_buff *skb; | |
259 | unsigned int offset; | |
260 | dma_addr_t dma_addr; | |
261 | unsigned char *dst; | |
262 | u64 *handle_array; | |
263 | int shift = 0; | |
264 | int index; | |
265 | int i; | |
266 | ||
267 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
268 | be32_to_cpu(adapter->login_rsp_buf-> | |
269 | off_rxadd_subcrqs)); | |
270 | ||
271 | for (i = 0; i < count; ++i) { | |
272 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
273 | if (!skb) { | |
274 | dev_err(dev, "Couldn't replenish rx buff\n"); | |
275 | adapter->replenish_no_mem++; | |
276 | break; | |
277 | } | |
278 | ||
279 | index = pool->free_map[pool->next_free]; | |
280 | ||
281 | if (pool->rx_buff[index].skb) | |
282 | dev_err(dev, "Inconsistent free_map!\n"); | |
283 | ||
284 | /* Copy the skb to the long term mapped DMA buffer */ | |
285 | offset = index * pool->buff_size; | |
286 | dst = pool->long_term_buff.buff + offset; | |
287 | memset(dst, 0, pool->buff_size); | |
288 | dma_addr = pool->long_term_buff.addr + offset; | |
289 | pool->rx_buff[index].data = dst; | |
290 | ||
291 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; | |
292 | pool->rx_buff[index].dma = dma_addr; | |
293 | pool->rx_buff[index].skb = skb; | |
294 | pool->rx_buff[index].pool_index = pool->index; | |
295 | pool->rx_buff[index].size = pool->buff_size; | |
296 | ||
297 | memset(&sub_crq, 0, sizeof(sub_crq)); | |
298 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; | |
299 | sub_crq.rx_add.correlator = | |
300 | cpu_to_be64((u64)&pool->rx_buff[index]); | |
301 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); | |
302 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; | |
303 | ||
304 | /* The length field of the sCRQ is defined to be 24 bits so the | |
305 | * buffer size needs to be left shifted by a byte before it is | |
306 | * converted to big endian to prevent the last byte from being | |
307 | * truncated. | |
308 | */ | |
309 | #ifdef __LITTLE_ENDIAN__ | |
310 | shift = 8; | |
311 | #endif | |
312 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); | |
313 | ||
314 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], | |
315 | &sub_crq); | |
316 | if (lpar_rc != H_SUCCESS) | |
317 | goto failure; | |
318 | ||
319 | buffers_added++; | |
320 | adapter->replenish_add_buff_success++; | |
321 | pool->next_free = (pool->next_free + 1) % pool->size; | |
322 | } | |
323 | atomic_add(buffers_added, &pool->available); | |
324 | return; | |
325 | ||
326 | failure: | |
327 | dev_info(dev, "replenish pools failure\n"); | |
328 | pool->free_map[pool->next_free] = index; | |
329 | pool->rx_buff[index].skb = NULL; | |
330 | if (!dma_mapping_error(dev, dma_addr)) | |
331 | dma_unmap_single(dev, dma_addr, pool->buff_size, | |
332 | DMA_FROM_DEVICE); | |
333 | ||
334 | dev_kfree_skb_any(skb); | |
335 | adapter->replenish_add_buff_failure++; | |
336 | atomic_add(buffers_added, &pool->available); | |
337 | } | |
338 | ||
339 | static void replenish_pools(struct ibmvnic_adapter *adapter) | |
340 | { | |
341 | int i; | |
342 | ||
343 | if (adapter->migrated) | |
344 | return; | |
345 | ||
346 | adapter->replenish_task_cycles++; | |
347 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
348 | i++) { | |
349 | if (adapter->rx_pool[i].active) | |
350 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); | |
351 | } | |
352 | } | |
353 | ||
354 | static void free_rx_pool(struct ibmvnic_adapter *adapter, | |
355 | struct ibmvnic_rx_pool *pool) | |
356 | { | |
357 | int i; | |
358 | ||
359 | kfree(pool->free_map); | |
360 | pool->free_map = NULL; | |
361 | ||
362 | if (!pool->rx_buff) | |
363 | return; | |
364 | ||
365 | for (i = 0; i < pool->size; i++) { | |
366 | if (pool->rx_buff[i].skb) { | |
367 | dev_kfree_skb_any(pool->rx_buff[i].skb); | |
368 | pool->rx_buff[i].skb = NULL; | |
369 | } | |
370 | } | |
371 | kfree(pool->rx_buff); | |
372 | pool->rx_buff = NULL; | |
373 | } | |
374 | ||
a57a5d25 | 375 | static int ibmvnic_login(struct net_device *netdev) |
032c5e82 TF |
376 | { |
377 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
bd0b6723 | 378 | unsigned long timeout = msecs_to_jiffies(30000); |
032c5e82 | 379 | struct device *dev = &adapter->vdev->dev; |
032c5e82 | 380 | |
bd0b6723 JA |
381 | do { |
382 | if (adapter->renegotiate) { | |
383 | adapter->renegotiate = false; | |
384 | release_sub_crqs_no_irqs(adapter); | |
385 | ||
386 | reinit_completion(&adapter->init_done); | |
387 | send_cap_queries(adapter); | |
388 | if (!wait_for_completion_timeout(&adapter->init_done, | |
389 | timeout)) { | |
390 | dev_err(dev, "Capabilities query timeout\n"); | |
391 | return -1; | |
392 | } | |
393 | } | |
394 | ||
395 | reinit_completion(&adapter->init_done); | |
396 | send_login(adapter); | |
397 | if (!wait_for_completion_timeout(&adapter->init_done, | |
398 | timeout)) { | |
399 | dev_err(dev, "Login timeout\n"); | |
400 | return -1; | |
401 | } | |
402 | } while (adapter->renegotiate); | |
403 | ||
a57a5d25 JA |
404 | return 0; |
405 | } | |
406 | ||
407 | static int ibmvnic_open(struct net_device *netdev) | |
408 | { | |
409 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
410 | struct device *dev = &adapter->vdev->dev; | |
411 | struct ibmvnic_tx_pool *tx_pool; | |
412 | union ibmvnic_crq crq; | |
413 | int rxadd_subcrqs; | |
414 | u64 *size_array; | |
415 | int tx_subcrqs; | |
416 | int rc = 0; | |
417 | int i, j; | |
418 | ||
ea5509f5 JA |
419 | if (adapter->is_closed) { |
420 | rc = ibmvnic_init(adapter); | |
421 | if (rc) | |
422 | return rc; | |
423 | } | |
424 | ||
a57a5d25 JA |
425 | rc = ibmvnic_login(netdev); |
426 | if (rc) | |
427 | return rc; | |
428 | ||
bd0b6723 JA |
429 | rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues); |
430 | if (rc) { | |
431 | dev_err(dev, "failed to set the number of tx queues\n"); | |
432 | return -1; | |
433 | } | |
434 | ||
435 | rc = init_sub_crq_irqs(adapter); | |
436 | if (rc) { | |
437 | dev_err(dev, "failed to initialize sub crq irqs\n"); | |
438 | return -1; | |
439 | } | |
440 | ||
032c5e82 TF |
441 | rxadd_subcrqs = |
442 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
443 | tx_subcrqs = | |
444 | be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
445 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
446 | be32_to_cpu(adapter->login_rsp_buf-> | |
447 | off_rxadd_buff_size)); | |
448 | adapter->map_id = 1; | |
449 | adapter->napi = kcalloc(adapter->req_rx_queues, | |
450 | sizeof(struct napi_struct), GFP_KERNEL); | |
451 | if (!adapter->napi) | |
452 | goto alloc_napi_failed; | |
453 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
454 | netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll, | |
455 | NAPI_POLL_WEIGHT); | |
456 | napi_enable(&adapter->napi[i]); | |
457 | } | |
458 | adapter->rx_pool = | |
459 | kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL); | |
460 | ||
461 | if (!adapter->rx_pool) | |
462 | goto rx_pool_arr_alloc_failed; | |
463 | send_map_query(adapter); | |
464 | for (i = 0; i < rxadd_subcrqs; i++) { | |
465 | init_rx_pool(adapter, &adapter->rx_pool[i], | |
068d9f90 | 466 | adapter->req_rx_add_entries_per_subcrq, i, |
032c5e82 TF |
467 | be64_to_cpu(size_array[i]), 1); |
468 | if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) { | |
469 | dev_err(dev, "Couldn't alloc rx pool\n"); | |
470 | goto rx_pool_alloc_failed; | |
471 | } | |
472 | } | |
473 | adapter->tx_pool = | |
474 | kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
475 | ||
476 | if (!adapter->tx_pool) | |
477 | goto tx_pool_arr_alloc_failed; | |
478 | for (i = 0; i < tx_subcrqs; i++) { | |
479 | tx_pool = &adapter->tx_pool[i]; | |
480 | tx_pool->tx_buff = | |
068d9f90 | 481 | kcalloc(adapter->req_tx_entries_per_subcrq, |
032c5e82 TF |
482 | sizeof(struct ibmvnic_tx_buff), GFP_KERNEL); |
483 | if (!tx_pool->tx_buff) | |
484 | goto tx_pool_alloc_failed; | |
485 | ||
486 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, | |
068d9f90 | 487 | adapter->req_tx_entries_per_subcrq * |
032c5e82 TF |
488 | adapter->req_mtu)) |
489 | goto tx_ltb_alloc_failed; | |
490 | ||
491 | tx_pool->free_map = | |
068d9f90 | 492 | kcalloc(adapter->req_tx_entries_per_subcrq, |
032c5e82 TF |
493 | sizeof(int), GFP_KERNEL); |
494 | if (!tx_pool->free_map) | |
495 | goto tx_fm_alloc_failed; | |
496 | ||
068d9f90 | 497 | for (j = 0; j < adapter->req_tx_entries_per_subcrq; j++) |
032c5e82 TF |
498 | tx_pool->free_map[j] = j; |
499 | ||
500 | tx_pool->consumer_index = 0; | |
501 | tx_pool->producer_index = 0; | |
502 | } | |
503 | adapter->bounce_buffer_size = | |
504 | (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1; | |
505 | adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size, | |
506 | GFP_KERNEL); | |
507 | if (!adapter->bounce_buffer) | |
508 | goto bounce_alloc_failed; | |
509 | ||
510 | adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer, | |
511 | adapter->bounce_buffer_size, | |
512 | DMA_TO_DEVICE); | |
513 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { | |
514 | dev_err(dev, "Couldn't map tx bounce buffer\n"); | |
515 | goto bounce_map_failed; | |
516 | } | |
517 | replenish_pools(adapter); | |
518 | ||
519 | /* We're ready to receive frames, enable the sub-crq interrupts and | |
520 | * set the logical link state to up | |
521 | */ | |
522 | for (i = 0; i < adapter->req_rx_queues; i++) | |
523 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); | |
524 | ||
525 | for (i = 0; i < adapter->req_tx_queues; i++) | |
526 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); | |
527 | ||
528 | memset(&crq, 0, sizeof(crq)); | |
529 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
530 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
531 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP; | |
532 | ibmvnic_send_crq(adapter, &crq); | |
533 | ||
b8efb894 | 534 | netif_tx_start_all_queues(netdev); |
ea5509f5 | 535 | adapter->is_closed = false; |
b8efb894 | 536 | |
032c5e82 TF |
537 | return 0; |
538 | ||
539 | bounce_map_failed: | |
540 | kfree(adapter->bounce_buffer); | |
541 | bounce_alloc_failed: | |
542 | i = tx_subcrqs - 1; | |
543 | kfree(adapter->tx_pool[i].free_map); | |
544 | tx_fm_alloc_failed: | |
545 | free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff); | |
546 | tx_ltb_alloc_failed: | |
547 | kfree(adapter->tx_pool[i].tx_buff); | |
548 | tx_pool_alloc_failed: | |
549 | for (j = 0; j < i; j++) { | |
550 | kfree(adapter->tx_pool[j].tx_buff); | |
551 | free_long_term_buff(adapter, | |
552 | &adapter->tx_pool[j].long_term_buff); | |
553 | kfree(adapter->tx_pool[j].free_map); | |
554 | } | |
555 | kfree(adapter->tx_pool); | |
556 | adapter->tx_pool = NULL; | |
557 | tx_pool_arr_alloc_failed: | |
558 | i = rxadd_subcrqs; | |
559 | rx_pool_alloc_failed: | |
560 | for (j = 0; j < i; j++) { | |
561 | free_rx_pool(adapter, &adapter->rx_pool[j]); | |
562 | free_long_term_buff(adapter, | |
563 | &adapter->rx_pool[j].long_term_buff); | |
564 | } | |
565 | kfree(adapter->rx_pool); | |
566 | adapter->rx_pool = NULL; | |
567 | rx_pool_arr_alloc_failed: | |
568 | for (i = 0; i < adapter->req_rx_queues; i++) | |
e722af63 | 569 | napi_disable(&adapter->napi[i]); |
032c5e82 | 570 | alloc_napi_failed: |
bd0b6723 | 571 | release_sub_crqs(adapter); |
032c5e82 TF |
572 | return -ENOMEM; |
573 | } | |
574 | ||
ea5509f5 | 575 | static void ibmvnic_release_resources(struct ibmvnic_adapter *adapter) |
032c5e82 | 576 | { |
032c5e82 | 577 | struct device *dev = &adapter->vdev->dev; |
ea5509f5 | 578 | int tx_scrqs, rx_scrqs; |
032c5e82 TF |
579 | int i; |
580 | ||
032c5e82 TF |
581 | if (adapter->bounce_buffer) { |
582 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { | |
583 | dma_unmap_single(&adapter->vdev->dev, | |
584 | adapter->bounce_buffer_dma, | |
585 | adapter->bounce_buffer_size, | |
586 | DMA_BIDIRECTIONAL); | |
587 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
588 | } | |
589 | kfree(adapter->bounce_buffer); | |
590 | adapter->bounce_buffer = NULL; | |
591 | } | |
592 | ||
ea5509f5 JA |
593 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); |
594 | for (i = 0; i < tx_scrqs; i++) { | |
595 | struct ibmvnic_tx_pool *tx_pool = &adapter->tx_pool[i]; | |
032c5e82 | 596 | |
ea5509f5 JA |
597 | kfree(tx_pool->tx_buff); |
598 | free_long_term_buff(adapter, &tx_pool->long_term_buff); | |
599 | kfree(tx_pool->free_map); | |
032c5e82 TF |
600 | } |
601 | kfree(adapter->tx_pool); | |
602 | adapter->tx_pool = NULL; | |
603 | ||
ea5509f5 JA |
604 | rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
605 | for (i = 0; i < rx_scrqs; i++) { | |
606 | struct ibmvnic_rx_pool *rx_pool = &adapter->rx_pool[i]; | |
607 | ||
608 | free_rx_pool(adapter, rx_pool); | |
609 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
032c5e82 TF |
610 | } |
611 | kfree(adapter->rx_pool); | |
612 | adapter->rx_pool = NULL; | |
613 | ||
ea5509f5 | 614 | release_sub_crqs(adapter); |
f992887c | 615 | release_crq_queue(adapter); |
ea5509f5 | 616 | |
ea5509f5 JA |
617 | if (adapter->stats_token) |
618 | dma_unmap_single(dev, adapter->stats_token, | |
619 | sizeof(struct ibmvnic_statistics), | |
620 | DMA_FROM_DEVICE); | |
ea5509f5 JA |
621 | } |
622 | ||
623 | static int ibmvnic_close(struct net_device *netdev) | |
624 | { | |
625 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
626 | union ibmvnic_crq crq; | |
627 | int i; | |
628 | ||
629 | adapter->closing = true; | |
630 | ||
631 | for (i = 0; i < adapter->req_rx_queues; i++) | |
632 | napi_disable(&adapter->napi[i]); | |
633 | ||
634 | if (!adapter->failover) | |
635 | netif_tx_stop_all_queues(netdev); | |
032c5e82 | 636 | |
ea5509f5 JA |
637 | memset(&crq, 0, sizeof(crq)); |
638 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
639 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
640 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN; | |
641 | ibmvnic_send_crq(adapter, &crq); | |
642 | ||
643 | ibmvnic_release_resources(adapter); | |
644 | ||
645 | adapter->is_closed = true; | |
646 | adapter->closing = false; | |
032c5e82 TF |
647 | return 0; |
648 | } | |
649 | ||
ad7775dc TF |
650 | /** |
651 | * build_hdr_data - creates L2/L3/L4 header data buffer | |
652 | * @hdr_field - bitfield determining needed headers | |
653 | * @skb - socket buffer | |
654 | * @hdr_len - array of header lengths | |
655 | * @tot_len - total length of data | |
656 | * | |
657 | * Reads hdr_field to determine which headers are needed by firmware. | |
658 | * Builds a buffer containing these headers. Saves individual header | |
659 | * lengths and total buffer length to be used to build descriptors. | |
660 | */ | |
661 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, | |
662 | int *hdr_len, u8 *hdr_data) | |
663 | { | |
664 | int len = 0; | |
665 | u8 *hdr; | |
666 | ||
667 | hdr_len[0] = sizeof(struct ethhdr); | |
668 | ||
669 | if (skb->protocol == htons(ETH_P_IP)) { | |
670 | hdr_len[1] = ip_hdr(skb)->ihl * 4; | |
671 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
672 | hdr_len[2] = tcp_hdrlen(skb); | |
673 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
674 | hdr_len[2] = sizeof(struct udphdr); | |
675 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
676 | hdr_len[1] = sizeof(struct ipv6hdr); | |
677 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
678 | hdr_len[2] = tcp_hdrlen(skb); | |
679 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
680 | hdr_len[2] = sizeof(struct udphdr); | |
681 | } | |
682 | ||
683 | memset(hdr_data, 0, 120); | |
684 | if ((hdr_field >> 6) & 1) { | |
685 | hdr = skb_mac_header(skb); | |
686 | memcpy(hdr_data, hdr, hdr_len[0]); | |
687 | len += hdr_len[0]; | |
688 | } | |
689 | ||
690 | if ((hdr_field >> 5) & 1) { | |
691 | hdr = skb_network_header(skb); | |
692 | memcpy(hdr_data + len, hdr, hdr_len[1]); | |
693 | len += hdr_len[1]; | |
694 | } | |
695 | ||
696 | if ((hdr_field >> 4) & 1) { | |
697 | hdr = skb_transport_header(skb); | |
698 | memcpy(hdr_data + len, hdr, hdr_len[2]); | |
699 | len += hdr_len[2]; | |
700 | } | |
701 | return len; | |
702 | } | |
703 | ||
704 | /** | |
705 | * create_hdr_descs - create header and header extension descriptors | |
706 | * @hdr_field - bitfield determining needed headers | |
707 | * @data - buffer containing header data | |
708 | * @len - length of data buffer | |
709 | * @hdr_len - array of individual header lengths | |
710 | * @scrq_arr - descriptor array | |
711 | * | |
712 | * Creates header and, if needed, header extension descriptors and | |
713 | * places them in a descriptor array, scrq_arr | |
714 | */ | |
715 | ||
716 | static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, | |
717 | union sub_crq *scrq_arr) | |
718 | { | |
719 | union sub_crq hdr_desc; | |
720 | int tmp_len = len; | |
721 | u8 *data, *cur; | |
722 | int tmp; | |
723 | ||
724 | while (tmp_len > 0) { | |
725 | cur = hdr_data + len - tmp_len; | |
726 | ||
727 | memset(&hdr_desc, 0, sizeof(hdr_desc)); | |
728 | if (cur != hdr_data) { | |
729 | data = hdr_desc.hdr_ext.data; | |
730 | tmp = tmp_len > 29 ? 29 : tmp_len; | |
731 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; | |
732 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; | |
733 | hdr_desc.hdr_ext.len = tmp; | |
734 | } else { | |
735 | data = hdr_desc.hdr.data; | |
736 | tmp = tmp_len > 24 ? 24 : tmp_len; | |
737 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; | |
738 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; | |
739 | hdr_desc.hdr.len = tmp; | |
740 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; | |
741 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); | |
742 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; | |
743 | hdr_desc.hdr.flag = hdr_field << 1; | |
744 | } | |
745 | memcpy(data, cur, tmp); | |
746 | tmp_len -= tmp; | |
747 | *scrq_arr = hdr_desc; | |
748 | scrq_arr++; | |
749 | } | |
750 | } | |
751 | ||
752 | /** | |
753 | * build_hdr_descs_arr - build a header descriptor array | |
754 | * @skb - socket buffer | |
755 | * @num_entries - number of descriptors to be sent | |
756 | * @subcrq - first TX descriptor | |
757 | * @hdr_field - bit field determining which headers will be sent | |
758 | * | |
759 | * This function will build a TX descriptor array with applicable | |
760 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. | |
761 | */ | |
762 | ||
763 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, | |
764 | int *num_entries, u8 hdr_field) | |
765 | { | |
766 | int hdr_len[3] = {0, 0, 0}; | |
767 | int tot_len, len; | |
768 | u8 *hdr_data = txbuff->hdr_data; | |
769 | ||
770 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, | |
771 | txbuff->hdr_data); | |
772 | len = tot_len; | |
773 | len -= 24; | |
774 | if (len > 0) | |
775 | num_entries += len % 29 ? len / 29 + 1 : len / 29; | |
776 | create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, | |
777 | txbuff->indir_arr + 1); | |
778 | } | |
779 | ||
032c5e82 TF |
780 | static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
781 | { | |
782 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
783 | int queue_num = skb_get_queue_mapping(skb); | |
ad7775dc | 784 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
032c5e82 TF |
785 | struct device *dev = &adapter->vdev->dev; |
786 | struct ibmvnic_tx_buff *tx_buff = NULL; | |
142c0ac4 | 787 | struct ibmvnic_sub_crq_queue *tx_scrq; |
032c5e82 TF |
788 | struct ibmvnic_tx_pool *tx_pool; |
789 | unsigned int tx_send_failed = 0; | |
790 | unsigned int tx_map_failed = 0; | |
791 | unsigned int tx_dropped = 0; | |
792 | unsigned int tx_packets = 0; | |
793 | unsigned int tx_bytes = 0; | |
794 | dma_addr_t data_dma_addr; | |
795 | struct netdev_queue *txq; | |
796 | bool used_bounce = false; | |
797 | unsigned long lpar_rc; | |
798 | union sub_crq tx_crq; | |
799 | unsigned int offset; | |
ad7775dc | 800 | int num_entries = 1; |
032c5e82 TF |
801 | unsigned char *dst; |
802 | u64 *handle_array; | |
803 | int index = 0; | |
804 | int ret = 0; | |
805 | ||
806 | tx_pool = &adapter->tx_pool[queue_num]; | |
142c0ac4 | 807 | tx_scrq = adapter->tx_scrq[queue_num]; |
032c5e82 TF |
808 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); |
809 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
810 | be32_to_cpu(adapter->login_rsp_buf-> | |
811 | off_txsubm_subcrqs)); | |
812 | if (adapter->migrated) { | |
813 | tx_send_failed++; | |
814 | tx_dropped++; | |
815 | ret = NETDEV_TX_BUSY; | |
816 | goto out; | |
817 | } | |
818 | ||
819 | index = tx_pool->free_map[tx_pool->consumer_index]; | |
820 | offset = index * adapter->req_mtu; | |
821 | dst = tx_pool->long_term_buff.buff + offset; | |
822 | memset(dst, 0, adapter->req_mtu); | |
823 | skb_copy_from_linear_data(skb, dst, skb->len); | |
824 | data_dma_addr = tx_pool->long_term_buff.addr + offset; | |
825 | ||
826 | tx_pool->consumer_index = | |
827 | (tx_pool->consumer_index + 1) % | |
068d9f90 | 828 | adapter->req_tx_entries_per_subcrq; |
032c5e82 TF |
829 | |
830 | tx_buff = &tx_pool->tx_buff[index]; | |
831 | tx_buff->skb = skb; | |
832 | tx_buff->data_dma[0] = data_dma_addr; | |
833 | tx_buff->data_len[0] = skb->len; | |
834 | tx_buff->index = index; | |
835 | tx_buff->pool_index = queue_num; | |
836 | tx_buff->last_frag = true; | |
837 | tx_buff->used_bounce = used_bounce; | |
838 | ||
839 | memset(&tx_crq, 0, sizeof(tx_crq)); | |
840 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; | |
841 | tx_crq.v1.type = IBMVNIC_TX_DESC; | |
842 | tx_crq.v1.n_crq_elem = 1; | |
843 | tx_crq.v1.n_sge = 1; | |
844 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; | |
845 | tx_crq.v1.correlator = cpu_to_be32(index); | |
846 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); | |
847 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); | |
848 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); | |
849 | ||
850 | if (adapter->vlan_header_insertion) { | |
851 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; | |
852 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); | |
853 | } | |
854 | ||
855 | if (skb->protocol == htons(ETH_P_IP)) { | |
856 | if (ip_hdr(skb)->version == 4) | |
857 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; | |
858 | else if (ip_hdr(skb)->version == 6) | |
859 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; | |
860 | ||
861 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
862 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; | |
863 | else if (ip_hdr(skb)->protocol != IPPROTO_TCP) | |
864 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; | |
865 | } | |
866 | ||
ad7775dc | 867 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
032c5e82 | 868 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
ad7775dc TF |
869 | hdrs += 2; |
870 | } | |
871 | /* determine if l2/3/4 headers are sent to firmware */ | |
872 | if ((*hdrs >> 7) & 1 && | |
873 | (skb->protocol == htons(ETH_P_IP) || | |
874 | skb->protocol == htons(ETH_P_IPV6))) { | |
875 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); | |
876 | tx_crq.v1.n_crq_elem = num_entries; | |
877 | tx_buff->indir_arr[0] = tx_crq; | |
878 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, | |
879 | sizeof(tx_buff->indir_arr), | |
880 | DMA_TO_DEVICE); | |
881 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { | |
882 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
883 | dev_err(dev, "tx: unable to map descriptor array\n"); | |
884 | tx_map_failed++; | |
885 | tx_dropped++; | |
886 | ret = NETDEV_TX_BUSY; | |
887 | goto out; | |
888 | } | |
498cd8e4 | 889 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
ad7775dc TF |
890 | (u64)tx_buff->indir_dma, |
891 | (u64)num_entries); | |
892 | } else { | |
498cd8e4 JA |
893 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
894 | &tx_crq); | |
ad7775dc | 895 | } |
032c5e82 TF |
896 | if (lpar_rc != H_SUCCESS) { |
897 | dev_err(dev, "tx failed with code %ld\n", lpar_rc); | |
898 | ||
899 | if (tx_pool->consumer_index == 0) | |
900 | tx_pool->consumer_index = | |
068d9f90 | 901 | adapter->req_tx_entries_per_subcrq - 1; |
032c5e82 TF |
902 | else |
903 | tx_pool->consumer_index--; | |
904 | ||
905 | tx_send_failed++; | |
906 | tx_dropped++; | |
907 | ret = NETDEV_TX_BUSY; | |
908 | goto out; | |
909 | } | |
142c0ac4 TF |
910 | |
911 | atomic_inc(&tx_scrq->used); | |
912 | ||
913 | if (atomic_read(&tx_scrq->used) >= adapter->req_tx_entries_per_subcrq) { | |
914 | netdev_info(netdev, "Stopping queue %d\n", queue_num); | |
915 | netif_stop_subqueue(netdev, queue_num); | |
916 | } | |
917 | ||
032c5e82 TF |
918 | tx_packets++; |
919 | tx_bytes += skb->len; | |
920 | txq->trans_start = jiffies; | |
921 | ret = NETDEV_TX_OK; | |
922 | ||
923 | out: | |
924 | netdev->stats.tx_dropped += tx_dropped; | |
925 | netdev->stats.tx_bytes += tx_bytes; | |
926 | netdev->stats.tx_packets += tx_packets; | |
927 | adapter->tx_send_failed += tx_send_failed; | |
928 | adapter->tx_map_failed += tx_map_failed; | |
929 | ||
930 | return ret; | |
931 | } | |
932 | ||
933 | static void ibmvnic_set_multi(struct net_device *netdev) | |
934 | { | |
935 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
936 | struct netdev_hw_addr *ha; | |
937 | union ibmvnic_crq crq; | |
938 | ||
939 | memset(&crq, 0, sizeof(crq)); | |
940 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
941 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
942 | ||
943 | if (netdev->flags & IFF_PROMISC) { | |
944 | if (!adapter->promisc_supported) | |
945 | return; | |
946 | } else { | |
947 | if (netdev->flags & IFF_ALLMULTI) { | |
948 | /* Accept all multicast */ | |
949 | memset(&crq, 0, sizeof(crq)); | |
950 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
951 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
952 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; | |
953 | ibmvnic_send_crq(adapter, &crq); | |
954 | } else if (netdev_mc_empty(netdev)) { | |
955 | /* Reject all multicast */ | |
956 | memset(&crq, 0, sizeof(crq)); | |
957 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
958 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
959 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; | |
960 | ibmvnic_send_crq(adapter, &crq); | |
961 | } else { | |
962 | /* Accept one or more multicast(s) */ | |
963 | netdev_for_each_mc_addr(ha, netdev) { | |
964 | memset(&crq, 0, sizeof(crq)); | |
965 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
966 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
967 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; | |
968 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], | |
969 | ha->addr); | |
970 | ibmvnic_send_crq(adapter, &crq); | |
971 | } | |
972 | } | |
973 | } | |
974 | } | |
975 | ||
976 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) | |
977 | { | |
978 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
979 | struct sockaddr *addr = p; | |
980 | union ibmvnic_crq crq; | |
981 | ||
982 | if (!is_valid_ether_addr(addr->sa_data)) | |
983 | return -EADDRNOTAVAIL; | |
984 | ||
985 | memset(&crq, 0, sizeof(crq)); | |
986 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; | |
987 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; | |
988 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); | |
989 | ibmvnic_send_crq(adapter, &crq); | |
990 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ | |
991 | return 0; | |
992 | } | |
993 | ||
032c5e82 TF |
994 | static void ibmvnic_tx_timeout(struct net_device *dev) |
995 | { | |
996 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
997 | int rc; | |
998 | ||
999 | /* Adapter timed out, resetting it */ | |
1000 | release_sub_crqs(adapter); | |
1001 | rc = ibmvnic_reset_crq(adapter); | |
1002 | if (rc) | |
1003 | dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n"); | |
1004 | else | |
1005 | ibmvnic_send_crq_init(adapter); | |
1006 | } | |
1007 | ||
1008 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, | |
1009 | struct ibmvnic_rx_buff *rx_buff) | |
1010 | { | |
1011 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; | |
1012 | ||
1013 | rx_buff->skb = NULL; | |
1014 | ||
1015 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); | |
1016 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; | |
1017 | ||
1018 | atomic_dec(&pool->available); | |
1019 | } | |
1020 | ||
1021 | static int ibmvnic_poll(struct napi_struct *napi, int budget) | |
1022 | { | |
1023 | struct net_device *netdev = napi->dev; | |
1024 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1025 | int scrq_num = (int)(napi - adapter->napi); | |
1026 | int frames_processed = 0; | |
1027 | restart_poll: | |
1028 | while (frames_processed < budget) { | |
1029 | struct sk_buff *skb; | |
1030 | struct ibmvnic_rx_buff *rx_buff; | |
1031 | union sub_crq *next; | |
1032 | u32 length; | |
1033 | u16 offset; | |
1034 | u8 flags = 0; | |
1035 | ||
1036 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) | |
1037 | break; | |
1038 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); | |
1039 | rx_buff = | |
1040 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> | |
1041 | rx_comp.correlator); | |
1042 | /* do error checking */ | |
1043 | if (next->rx_comp.rc) { | |
1044 | netdev_err(netdev, "rx error %x\n", next->rx_comp.rc); | |
1045 | /* free the entry */ | |
1046 | next->rx_comp.first = 0; | |
1047 | remove_buff_from_pool(adapter, rx_buff); | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | length = be32_to_cpu(next->rx_comp.len); | |
1052 | offset = be16_to_cpu(next->rx_comp.off_frame_data); | |
1053 | flags = next->rx_comp.flags; | |
1054 | skb = rx_buff->skb; | |
1055 | skb_copy_to_linear_data(skb, rx_buff->data + offset, | |
1056 | length); | |
1057 | skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci); | |
1058 | /* free the entry */ | |
1059 | next->rx_comp.first = 0; | |
1060 | remove_buff_from_pool(adapter, rx_buff); | |
1061 | ||
1062 | skb_put(skb, length); | |
1063 | skb->protocol = eth_type_trans(skb, netdev); | |
1064 | ||
1065 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && | |
1066 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { | |
1067 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1068 | } | |
1069 | ||
1070 | length = skb->len; | |
1071 | napi_gro_receive(napi, skb); /* send it up */ | |
1072 | netdev->stats.rx_packets++; | |
1073 | netdev->stats.rx_bytes += length; | |
1074 | frames_processed++; | |
1075 | } | |
498cd8e4 | 1076 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); |
032c5e82 TF |
1077 | |
1078 | if (frames_processed < budget) { | |
1079 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
6ad20165 | 1080 | napi_complete_done(napi, frames_processed); |
032c5e82 TF |
1081 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && |
1082 | napi_reschedule(napi)) { | |
1083 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
1084 | goto restart_poll; | |
1085 | } | |
1086 | } | |
1087 | return frames_processed; | |
1088 | } | |
1089 | ||
1090 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1091 | static void ibmvnic_netpoll_controller(struct net_device *dev) | |
1092 | { | |
1093 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1094 | int i; | |
1095 | ||
1096 | replenish_pools(netdev_priv(dev)); | |
1097 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1098 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
1099 | adapter->rx_scrq[i]); | |
1100 | } | |
1101 | #endif | |
1102 | ||
1103 | static const struct net_device_ops ibmvnic_netdev_ops = { | |
1104 | .ndo_open = ibmvnic_open, | |
1105 | .ndo_stop = ibmvnic_close, | |
1106 | .ndo_start_xmit = ibmvnic_xmit, | |
1107 | .ndo_set_rx_mode = ibmvnic_set_multi, | |
1108 | .ndo_set_mac_address = ibmvnic_set_mac, | |
1109 | .ndo_validate_addr = eth_validate_addr, | |
032c5e82 TF |
1110 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
1111 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1112 | .ndo_poll_controller = ibmvnic_netpoll_controller, | |
1113 | #endif | |
1114 | }; | |
1115 | ||
1116 | /* ethtool functions */ | |
1117 | ||
8a43379f PR |
1118 | static int ibmvnic_get_link_ksettings(struct net_device *netdev, |
1119 | struct ethtool_link_ksettings *cmd) | |
032c5e82 | 1120 | { |
8a43379f PR |
1121 | u32 supported, advertising; |
1122 | ||
1123 | supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | | |
032c5e82 | 1124 | SUPPORTED_FIBRE); |
8a43379f | 1125 | advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
032c5e82 | 1126 | ADVERTISED_FIBRE); |
8a43379f PR |
1127 | cmd->base.speed = SPEED_1000; |
1128 | cmd->base.duplex = DUPLEX_FULL; | |
1129 | cmd->base.port = PORT_FIBRE; | |
1130 | cmd->base.phy_address = 0; | |
1131 | cmd->base.autoneg = AUTONEG_ENABLE; | |
1132 | ||
1133 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
1134 | supported); | |
1135 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
1136 | advertising); | |
1137 | ||
032c5e82 TF |
1138 | return 0; |
1139 | } | |
1140 | ||
1141 | static void ibmvnic_get_drvinfo(struct net_device *dev, | |
1142 | struct ethtool_drvinfo *info) | |
1143 | { | |
1144 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); | |
1145 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); | |
1146 | } | |
1147 | ||
1148 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) | |
1149 | { | |
1150 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1151 | ||
1152 | return adapter->msg_enable; | |
1153 | } | |
1154 | ||
1155 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) | |
1156 | { | |
1157 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1158 | ||
1159 | adapter->msg_enable = data; | |
1160 | } | |
1161 | ||
1162 | static u32 ibmvnic_get_link(struct net_device *netdev) | |
1163 | { | |
1164 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1165 | ||
1166 | /* Don't need to send a query because we request a logical link up at | |
1167 | * init and then we wait for link state indications | |
1168 | */ | |
1169 | return adapter->logical_link_state; | |
1170 | } | |
1171 | ||
1172 | static void ibmvnic_get_ringparam(struct net_device *netdev, | |
1173 | struct ethtool_ringparam *ring) | |
1174 | { | |
1175 | ring->rx_max_pending = 0; | |
1176 | ring->tx_max_pending = 0; | |
1177 | ring->rx_mini_max_pending = 0; | |
1178 | ring->rx_jumbo_max_pending = 0; | |
1179 | ring->rx_pending = 0; | |
1180 | ring->tx_pending = 0; | |
1181 | ring->rx_mini_pending = 0; | |
1182 | ring->rx_jumbo_pending = 0; | |
1183 | } | |
1184 | ||
1185 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
1186 | { | |
1187 | int i; | |
1188 | ||
1189 | if (stringset != ETH_SS_STATS) | |
1190 | return; | |
1191 | ||
1192 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN) | |
1193 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); | |
1194 | } | |
1195 | ||
1196 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) | |
1197 | { | |
1198 | switch (sset) { | |
1199 | case ETH_SS_STATS: | |
1200 | return ARRAY_SIZE(ibmvnic_stats); | |
1201 | default: | |
1202 | return -EOPNOTSUPP; | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, | |
1207 | struct ethtool_stats *stats, u64 *data) | |
1208 | { | |
1209 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1210 | union ibmvnic_crq crq; | |
1211 | int i; | |
1212 | ||
1213 | memset(&crq, 0, sizeof(crq)); | |
1214 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; | |
1215 | crq.request_statistics.cmd = REQUEST_STATISTICS; | |
1216 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); | |
1217 | crq.request_statistics.len = | |
1218 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); | |
032c5e82 TF |
1219 | |
1220 | /* Wait for data to be written */ | |
1221 | init_completion(&adapter->stats_done); | |
db5d0b59 | 1222 | ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
1223 | wait_for_completion(&adapter->stats_done); |
1224 | ||
1225 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) | |
1226 | data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset); | |
1227 | } | |
1228 | ||
1229 | static const struct ethtool_ops ibmvnic_ethtool_ops = { | |
032c5e82 TF |
1230 | .get_drvinfo = ibmvnic_get_drvinfo, |
1231 | .get_msglevel = ibmvnic_get_msglevel, | |
1232 | .set_msglevel = ibmvnic_set_msglevel, | |
1233 | .get_link = ibmvnic_get_link, | |
1234 | .get_ringparam = ibmvnic_get_ringparam, | |
1235 | .get_strings = ibmvnic_get_strings, | |
1236 | .get_sset_count = ibmvnic_get_sset_count, | |
1237 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, | |
8a43379f | 1238 | .get_link_ksettings = ibmvnic_get_link_ksettings, |
032c5e82 TF |
1239 | }; |
1240 | ||
1241 | /* Routines for managing CRQs/sCRQs */ | |
1242 | ||
1243 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, | |
1244 | struct ibmvnic_sub_crq_queue *scrq) | |
1245 | { | |
1246 | struct device *dev = &adapter->vdev->dev; | |
1247 | long rc; | |
1248 | ||
1249 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); | |
1250 | ||
1251 | /* Close the sub-crqs */ | |
1252 | do { | |
1253 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, | |
1254 | adapter->vdev->unit_address, | |
1255 | scrq->crq_num); | |
1256 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
1257 | ||
1258 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
1259 | DMA_BIDIRECTIONAL); | |
1260 | free_pages((unsigned long)scrq->msgs, 2); | |
1261 | kfree(scrq); | |
1262 | } | |
1263 | ||
1264 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter | |
1265 | *adapter) | |
1266 | { | |
1267 | struct device *dev = &adapter->vdev->dev; | |
1268 | struct ibmvnic_sub_crq_queue *scrq; | |
1269 | int rc; | |
1270 | ||
1271 | scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC); | |
1272 | if (!scrq) | |
1273 | return NULL; | |
1274 | ||
12608c26 | 1275 | scrq->msgs = (union sub_crq *)__get_free_pages(GFP_ATOMIC, 2); |
032c5e82 TF |
1276 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); |
1277 | if (!scrq->msgs) { | |
1278 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); | |
1279 | goto zero_page_failed; | |
1280 | } | |
1281 | ||
1282 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, | |
1283 | DMA_BIDIRECTIONAL); | |
1284 | if (dma_mapping_error(dev, scrq->msg_token)) { | |
1285 | dev_warn(dev, "Couldn't map crq queue messages page\n"); | |
1286 | goto map_failed; | |
1287 | } | |
1288 | ||
1289 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
1290 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
1291 | ||
1292 | if (rc == H_RESOURCE) | |
1293 | rc = ibmvnic_reset_crq(adapter); | |
1294 | ||
1295 | if (rc == H_CLOSED) { | |
1296 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); | |
1297 | } else if (rc) { | |
1298 | dev_warn(dev, "Error %d registering sub-crq\n", rc); | |
1299 | goto reg_failed; | |
1300 | } | |
1301 | ||
032c5e82 TF |
1302 | scrq->adapter = adapter; |
1303 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); | |
1304 | scrq->cur = 0; | |
142c0ac4 | 1305 | atomic_set(&scrq->used, 0); |
032c5e82 TF |
1306 | scrq->rx_skb_top = NULL; |
1307 | spin_lock_init(&scrq->lock); | |
1308 | ||
1309 | netdev_dbg(adapter->netdev, | |
1310 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", | |
1311 | scrq->crq_num, scrq->hw_irq, scrq->irq); | |
1312 | ||
1313 | return scrq; | |
1314 | ||
032c5e82 TF |
1315 | reg_failed: |
1316 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
1317 | DMA_BIDIRECTIONAL); | |
1318 | map_failed: | |
1319 | free_pages((unsigned long)scrq->msgs, 2); | |
1320 | zero_page_failed: | |
1321 | kfree(scrq); | |
1322 | ||
1323 | return NULL; | |
1324 | } | |
1325 | ||
1326 | static void release_sub_crqs(struct ibmvnic_adapter *adapter) | |
1327 | { | |
1328 | int i; | |
1329 | ||
1330 | if (adapter->tx_scrq) { | |
1331 | for (i = 0; i < adapter->req_tx_queues; i++) | |
1332 | if (adapter->tx_scrq[i]) { | |
1333 | free_irq(adapter->tx_scrq[i]->irq, | |
1334 | adapter->tx_scrq[i]); | |
88eb98a0 | 1335 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
032c5e82 TF |
1336 | release_sub_crq_queue(adapter, |
1337 | adapter->tx_scrq[i]); | |
1338 | } | |
9501df3c | 1339 | kfree(adapter->tx_scrq); |
032c5e82 TF |
1340 | adapter->tx_scrq = NULL; |
1341 | } | |
1342 | ||
1343 | if (adapter->rx_scrq) { | |
1344 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1345 | if (adapter->rx_scrq[i]) { | |
1346 | free_irq(adapter->rx_scrq[i]->irq, | |
1347 | adapter->rx_scrq[i]); | |
88eb98a0 | 1348 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
032c5e82 TF |
1349 | release_sub_crq_queue(adapter, |
1350 | adapter->rx_scrq[i]); | |
1351 | } | |
9501df3c | 1352 | kfree(adapter->rx_scrq); |
032c5e82 TF |
1353 | adapter->rx_scrq = NULL; |
1354 | } | |
032c5e82 TF |
1355 | } |
1356 | ||
ea22d51a TF |
1357 | static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter) |
1358 | { | |
1359 | int i; | |
1360 | ||
1361 | if (adapter->tx_scrq) { | |
1362 | for (i = 0; i < adapter->req_tx_queues; i++) | |
1363 | if (adapter->tx_scrq[i]) | |
1364 | release_sub_crq_queue(adapter, | |
1365 | adapter->tx_scrq[i]); | |
1366 | adapter->tx_scrq = NULL; | |
1367 | } | |
1368 | ||
1369 | if (adapter->rx_scrq) { | |
1370 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1371 | if (adapter->rx_scrq[i]) | |
1372 | release_sub_crq_queue(adapter, | |
1373 | adapter->rx_scrq[i]); | |
1374 | adapter->rx_scrq = NULL; | |
1375 | } | |
ea22d51a TF |
1376 | } |
1377 | ||
032c5e82 TF |
1378 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
1379 | struct ibmvnic_sub_crq_queue *scrq) | |
1380 | { | |
1381 | struct device *dev = &adapter->vdev->dev; | |
1382 | unsigned long rc; | |
1383 | ||
1384 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1385 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1386 | if (rc) | |
1387 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", | |
1388 | scrq->hw_irq, rc); | |
1389 | return rc; | |
1390 | } | |
1391 | ||
1392 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, | |
1393 | struct ibmvnic_sub_crq_queue *scrq) | |
1394 | { | |
1395 | struct device *dev = &adapter->vdev->dev; | |
1396 | unsigned long rc; | |
1397 | ||
1398 | if (scrq->hw_irq > 0x100000000ULL) { | |
1399 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); | |
1400 | return 1; | |
1401 | } | |
1402 | ||
1403 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1404 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1405 | if (rc) | |
1406 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", | |
1407 | scrq->hw_irq, rc); | |
1408 | return rc; | |
1409 | } | |
1410 | ||
1411 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, | |
1412 | struct ibmvnic_sub_crq_queue *scrq) | |
1413 | { | |
1414 | struct device *dev = &adapter->vdev->dev; | |
1415 | struct ibmvnic_tx_buff *txbuff; | |
1416 | union sub_crq *next; | |
1417 | int index; | |
1418 | int i, j; | |
ad7775dc | 1419 | u8 first; |
032c5e82 TF |
1420 | |
1421 | restart_loop: | |
1422 | while (pending_scrq(adapter, scrq)) { | |
1423 | unsigned int pool = scrq->pool_index; | |
1424 | ||
1425 | next = ibmvnic_next_scrq(adapter, scrq); | |
1426 | for (i = 0; i < next->tx_comp.num_comps; i++) { | |
1427 | if (next->tx_comp.rcs[i]) { | |
1428 | dev_err(dev, "tx error %x\n", | |
1429 | next->tx_comp.rcs[i]); | |
1430 | continue; | |
1431 | } | |
1432 | index = be32_to_cpu(next->tx_comp.correlators[i]); | |
1433 | txbuff = &adapter->tx_pool[pool].tx_buff[index]; | |
1434 | ||
1435 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { | |
1436 | if (!txbuff->data_dma[j]) | |
1437 | continue; | |
1438 | ||
1439 | txbuff->data_dma[j] = 0; | |
1440 | txbuff->used_bounce = false; | |
1441 | } | |
ad7775dc TF |
1442 | /* if sub_crq was sent indirectly */ |
1443 | first = txbuff->indir_arr[0].generic.first; | |
1444 | if (first == IBMVNIC_CRQ_CMD) { | |
1445 | dma_unmap_single(dev, txbuff->indir_dma, | |
1446 | sizeof(txbuff->indir_arr), | |
1447 | DMA_TO_DEVICE); | |
1448 | } | |
032c5e82 | 1449 | |
142c0ac4 TF |
1450 | if (txbuff->last_frag) { |
1451 | atomic_dec(&scrq->used); | |
1452 | ||
1453 | if (atomic_read(&scrq->used) <= | |
1454 | (adapter->req_tx_entries_per_subcrq / 2) && | |
1455 | netif_subqueue_stopped(adapter->netdev, | |
1456 | txbuff->skb)) { | |
1457 | netif_wake_subqueue(adapter->netdev, | |
1458 | scrq->pool_index); | |
1459 | netdev_dbg(adapter->netdev, | |
1460 | "Started queue %d\n", | |
1461 | scrq->pool_index); | |
1462 | } | |
1463 | ||
032c5e82 | 1464 | dev_kfree_skb_any(txbuff->skb); |
142c0ac4 | 1465 | } |
032c5e82 TF |
1466 | |
1467 | adapter->tx_pool[pool].free_map[adapter->tx_pool[pool]. | |
1468 | producer_index] = index; | |
1469 | adapter->tx_pool[pool].producer_index = | |
1470 | (adapter->tx_pool[pool].producer_index + 1) % | |
068d9f90 | 1471 | adapter->req_tx_entries_per_subcrq; |
032c5e82 TF |
1472 | } |
1473 | /* remove tx_comp scrq*/ | |
1474 | next->tx_comp.first = 0; | |
1475 | } | |
1476 | ||
1477 | enable_scrq_irq(adapter, scrq); | |
1478 | ||
1479 | if (pending_scrq(adapter, scrq)) { | |
1480 | disable_scrq_irq(adapter, scrq); | |
1481 | goto restart_loop; | |
1482 | } | |
1483 | ||
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) | |
1488 | { | |
1489 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
1490 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
1491 | ||
1492 | disable_scrq_irq(adapter, scrq); | |
1493 | ibmvnic_complete_tx(adapter, scrq); | |
1494 | ||
1495 | return IRQ_HANDLED; | |
1496 | } | |
1497 | ||
1498 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) | |
1499 | { | |
1500 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
1501 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
1502 | ||
1503 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { | |
1504 | disable_scrq_irq(adapter, scrq); | |
1505 | __napi_schedule(&adapter->napi[scrq->scrq_num]); | |
1506 | } | |
1507 | ||
1508 | return IRQ_HANDLED; | |
1509 | } | |
1510 | ||
ea22d51a TF |
1511 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
1512 | { | |
1513 | struct device *dev = &adapter->vdev->dev; | |
1514 | struct ibmvnic_sub_crq_queue *scrq; | |
1515 | int i = 0, j = 0; | |
1516 | int rc = 0; | |
1517 | ||
1518 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1519 | scrq = adapter->tx_scrq[i]; | |
1520 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
1521 | ||
99c1790e | 1522 | if (!scrq->irq) { |
ea22d51a TF |
1523 | rc = -EINVAL; |
1524 | dev_err(dev, "Error mapping irq\n"); | |
1525 | goto req_tx_irq_failed; | |
1526 | } | |
1527 | ||
1528 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, | |
1529 | 0, "ibmvnic_tx", scrq); | |
1530 | ||
1531 | if (rc) { | |
1532 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", | |
1533 | scrq->irq, rc); | |
1534 | irq_dispose_mapping(scrq->irq); | |
1535 | goto req_rx_irq_failed; | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1540 | scrq = adapter->rx_scrq[i]; | |
1541 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
99c1790e | 1542 | if (!scrq->irq) { |
ea22d51a TF |
1543 | rc = -EINVAL; |
1544 | dev_err(dev, "Error mapping irq\n"); | |
1545 | goto req_rx_irq_failed; | |
1546 | } | |
1547 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, | |
1548 | 0, "ibmvnic_rx", scrq); | |
1549 | if (rc) { | |
1550 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", | |
1551 | scrq->irq, rc); | |
1552 | irq_dispose_mapping(scrq->irq); | |
1553 | goto req_rx_irq_failed; | |
1554 | } | |
1555 | } | |
1556 | return rc; | |
1557 | ||
1558 | req_rx_irq_failed: | |
8bf371e6 | 1559 | for (j = 0; j < i; j++) { |
ea22d51a TF |
1560 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); |
1561 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 1562 | } |
ea22d51a TF |
1563 | i = adapter->req_tx_queues; |
1564 | req_tx_irq_failed: | |
8bf371e6 | 1565 | for (j = 0; j < i; j++) { |
ea22d51a TF |
1566 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); |
1567 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 1568 | } |
ea22d51a TF |
1569 | release_sub_crqs_no_irqs(adapter); |
1570 | return rc; | |
1571 | } | |
1572 | ||
032c5e82 TF |
1573 | static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry) |
1574 | { | |
1575 | struct device *dev = &adapter->vdev->dev; | |
1576 | struct ibmvnic_sub_crq_queue **allqueues; | |
1577 | int registered_queues = 0; | |
1578 | union ibmvnic_crq crq; | |
1579 | int total_queues; | |
1580 | int more = 0; | |
ea22d51a | 1581 | int i; |
032c5e82 TF |
1582 | |
1583 | if (!retry) { | |
1584 | /* Sub-CRQ entries are 32 byte long */ | |
1585 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); | |
1586 | ||
1587 | if (adapter->min_tx_entries_per_subcrq > entries_page || | |
1588 | adapter->min_rx_add_entries_per_subcrq > entries_page) { | |
1589 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); | |
1590 | goto allqueues_failed; | |
1591 | } | |
1592 | ||
1593 | /* Get the minimum between the queried max and the entries | |
1594 | * that fit in our PAGE_SIZE | |
1595 | */ | |
1596 | adapter->req_tx_entries_per_subcrq = | |
1597 | adapter->max_tx_entries_per_subcrq > entries_page ? | |
1598 | entries_page : adapter->max_tx_entries_per_subcrq; | |
1599 | adapter->req_rx_add_entries_per_subcrq = | |
1600 | adapter->max_rx_add_entries_per_subcrq > entries_page ? | |
1601 | entries_page : adapter->max_rx_add_entries_per_subcrq; | |
1602 | ||
6dbcd8fb JA |
1603 | adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues; |
1604 | adapter->req_rx_queues = adapter->opt_rx_comp_queues; | |
498cd8e4 | 1605 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; |
032c5e82 | 1606 | |
f39f0d1e | 1607 | adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; |
032c5e82 TF |
1608 | } |
1609 | ||
1610 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; | |
1611 | ||
1612 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC); | |
1613 | if (!allqueues) | |
1614 | goto allqueues_failed; | |
1615 | ||
1616 | for (i = 0; i < total_queues; i++) { | |
1617 | allqueues[i] = init_sub_crq_queue(adapter); | |
1618 | if (!allqueues[i]) { | |
1619 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); | |
1620 | break; | |
1621 | } | |
1622 | registered_queues++; | |
1623 | } | |
1624 | ||
1625 | /* Make sure we were able to register the minimum number of queues */ | |
1626 | if (registered_queues < | |
1627 | adapter->min_tx_queues + adapter->min_rx_queues) { | |
1628 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); | |
1629 | goto tx_failed; | |
1630 | } | |
1631 | ||
1632 | /* Distribute the failed allocated queues*/ | |
1633 | for (i = 0; i < total_queues - registered_queues + more ; i++) { | |
1634 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); | |
1635 | switch (i % 3) { | |
1636 | case 0: | |
1637 | if (adapter->req_rx_queues > adapter->min_rx_queues) | |
1638 | adapter->req_rx_queues--; | |
1639 | else | |
1640 | more++; | |
1641 | break; | |
1642 | case 1: | |
1643 | if (adapter->req_tx_queues > adapter->min_tx_queues) | |
1644 | adapter->req_tx_queues--; | |
1645 | else | |
1646 | more++; | |
1647 | break; | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, | |
1652 | sizeof(*adapter->tx_scrq), GFP_ATOMIC); | |
1653 | if (!adapter->tx_scrq) | |
1654 | goto tx_failed; | |
1655 | ||
1656 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1657 | adapter->tx_scrq[i] = allqueues[i]; | |
1658 | adapter->tx_scrq[i]->pool_index = i; | |
032c5e82 TF |
1659 | } |
1660 | ||
1661 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, | |
1662 | sizeof(*adapter->rx_scrq), GFP_ATOMIC); | |
1663 | if (!adapter->rx_scrq) | |
1664 | goto rx_failed; | |
1665 | ||
1666 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1667 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; | |
1668 | adapter->rx_scrq[i]->scrq_num = i; | |
032c5e82 TF |
1669 | } |
1670 | ||
1671 | memset(&crq, 0, sizeof(crq)); | |
1672 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
1673 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
1674 | ||
1675 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); | |
de89e854 | 1676 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
901e040a | 1677 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1678 | ibmvnic_send_crq(adapter, &crq); |
1679 | ||
1680 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); | |
de89e854 | 1681 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
901e040a | 1682 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1683 | ibmvnic_send_crq(adapter, &crq); |
1684 | ||
1685 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); | |
de89e854 | 1686 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
901e040a | 1687 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1688 | ibmvnic_send_crq(adapter, &crq); |
1689 | ||
1690 | crq.request_capability.capability = | |
1691 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); | |
1692 | crq.request_capability.number = | |
de89e854 | 1693 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
901e040a | 1694 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1695 | ibmvnic_send_crq(adapter, &crq); |
1696 | ||
1697 | crq.request_capability.capability = | |
1698 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); | |
1699 | crq.request_capability.number = | |
de89e854 | 1700 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
901e040a | 1701 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1702 | ibmvnic_send_crq(adapter, &crq); |
1703 | ||
1704 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); | |
de89e854 | 1705 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
901e040a | 1706 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1707 | ibmvnic_send_crq(adapter, &crq); |
1708 | ||
1709 | if (adapter->netdev->flags & IFF_PROMISC) { | |
1710 | if (adapter->promisc_supported) { | |
1711 | crq.request_capability.capability = | |
1712 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 1713 | crq.request_capability.number = cpu_to_be64(1); |
901e040a | 1714 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1715 | ibmvnic_send_crq(adapter, &crq); |
1716 | } | |
1717 | } else { | |
1718 | crq.request_capability.capability = | |
1719 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 1720 | crq.request_capability.number = cpu_to_be64(0); |
901e040a | 1721 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1722 | ibmvnic_send_crq(adapter, &crq); |
1723 | } | |
1724 | ||
1725 | kfree(allqueues); | |
1726 | ||
1727 | return; | |
1728 | ||
032c5e82 TF |
1729 | rx_failed: |
1730 | kfree(adapter->tx_scrq); | |
1731 | adapter->tx_scrq = NULL; | |
1732 | tx_failed: | |
1733 | for (i = 0; i < registered_queues; i++) | |
1734 | release_sub_crq_queue(adapter, allqueues[i]); | |
1735 | kfree(allqueues); | |
1736 | allqueues_failed: | |
1737 | ibmvnic_remove(adapter->vdev); | |
1738 | } | |
1739 | ||
1740 | static int pending_scrq(struct ibmvnic_adapter *adapter, | |
1741 | struct ibmvnic_sub_crq_queue *scrq) | |
1742 | { | |
1743 | union sub_crq *entry = &scrq->msgs[scrq->cur]; | |
1744 | ||
1745 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing) | |
1746 | return 1; | |
1747 | else | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, | |
1752 | struct ibmvnic_sub_crq_queue *scrq) | |
1753 | { | |
1754 | union sub_crq *entry; | |
1755 | unsigned long flags; | |
1756 | ||
1757 | spin_lock_irqsave(&scrq->lock, flags); | |
1758 | entry = &scrq->msgs[scrq->cur]; | |
1759 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
1760 | if (++scrq->cur == scrq->size) | |
1761 | scrq->cur = 0; | |
1762 | } else { | |
1763 | entry = NULL; | |
1764 | } | |
1765 | spin_unlock_irqrestore(&scrq->lock, flags); | |
1766 | ||
1767 | return entry; | |
1768 | } | |
1769 | ||
1770 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) | |
1771 | { | |
1772 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
1773 | union ibmvnic_crq *crq; | |
1774 | ||
1775 | crq = &queue->msgs[queue->cur]; | |
1776 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
1777 | if (++queue->cur == queue->size) | |
1778 | queue->cur = 0; | |
1779 | } else { | |
1780 | crq = NULL; | |
1781 | } | |
1782 | ||
1783 | return crq; | |
1784 | } | |
1785 | ||
1786 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
1787 | union sub_crq *sub_crq) | |
1788 | { | |
1789 | unsigned int ua = adapter->vdev->unit_address; | |
1790 | struct device *dev = &adapter->vdev->dev; | |
1791 | u64 *u64_crq = (u64 *)sub_crq; | |
1792 | int rc; | |
1793 | ||
1794 | netdev_dbg(adapter->netdev, | |
1795 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", | |
1796 | (unsigned long int)cpu_to_be64(remote_handle), | |
1797 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
1798 | (unsigned long int)cpu_to_be64(u64_crq[1]), | |
1799 | (unsigned long int)cpu_to_be64(u64_crq[2]), | |
1800 | (unsigned long int)cpu_to_be64(u64_crq[3])); | |
1801 | ||
1802 | /* Make sure the hypervisor sees the complete request */ | |
1803 | mb(); | |
1804 | ||
1805 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, | |
1806 | cpu_to_be64(remote_handle), | |
1807 | cpu_to_be64(u64_crq[0]), | |
1808 | cpu_to_be64(u64_crq[1]), | |
1809 | cpu_to_be64(u64_crq[2]), | |
1810 | cpu_to_be64(u64_crq[3])); | |
1811 | ||
1812 | if (rc) { | |
1813 | if (rc == H_CLOSED) | |
1814 | dev_warn(dev, "CRQ Queue closed\n"); | |
1815 | dev_err(dev, "Send error (rc=%d)\n", rc); | |
1816 | } | |
1817 | ||
1818 | return rc; | |
1819 | } | |
1820 | ||
ad7775dc TF |
1821 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
1822 | u64 remote_handle, u64 ioba, u64 num_entries) | |
1823 | { | |
1824 | unsigned int ua = adapter->vdev->unit_address; | |
1825 | struct device *dev = &adapter->vdev->dev; | |
1826 | int rc; | |
1827 | ||
1828 | /* Make sure the hypervisor sees the complete request */ | |
1829 | mb(); | |
1830 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, | |
1831 | cpu_to_be64(remote_handle), | |
1832 | ioba, num_entries); | |
1833 | ||
1834 | if (rc) { | |
1835 | if (rc == H_CLOSED) | |
1836 | dev_warn(dev, "CRQ Queue closed\n"); | |
1837 | dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); | |
1838 | } | |
1839 | ||
1840 | return rc; | |
1841 | } | |
1842 | ||
032c5e82 TF |
1843 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
1844 | union ibmvnic_crq *crq) | |
1845 | { | |
1846 | unsigned int ua = adapter->vdev->unit_address; | |
1847 | struct device *dev = &adapter->vdev->dev; | |
1848 | u64 *u64_crq = (u64 *)crq; | |
1849 | int rc; | |
1850 | ||
1851 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", | |
1852 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
1853 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
1854 | ||
1855 | /* Make sure the hypervisor sees the complete request */ | |
1856 | mb(); | |
1857 | ||
1858 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, | |
1859 | cpu_to_be64(u64_crq[0]), | |
1860 | cpu_to_be64(u64_crq[1])); | |
1861 | ||
1862 | if (rc) { | |
1863 | if (rc == H_CLOSED) | |
1864 | dev_warn(dev, "CRQ Queue closed\n"); | |
1865 | dev_warn(dev, "Send error (rc=%d)\n", rc); | |
1866 | } | |
1867 | ||
1868 | return rc; | |
1869 | } | |
1870 | ||
1871 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) | |
1872 | { | |
1873 | union ibmvnic_crq crq; | |
1874 | ||
1875 | memset(&crq, 0, sizeof(crq)); | |
1876 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
1877 | crq.generic.cmd = IBMVNIC_CRQ_INIT; | |
1878 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); | |
1879 | ||
1880 | return ibmvnic_send_crq(adapter, &crq); | |
1881 | } | |
1882 | ||
1883 | static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter) | |
1884 | { | |
1885 | union ibmvnic_crq crq; | |
1886 | ||
1887 | memset(&crq, 0, sizeof(crq)); | |
1888 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
1889 | crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE; | |
1890 | netdev_dbg(adapter->netdev, "Sending CRQ init complete\n"); | |
1891 | ||
1892 | return ibmvnic_send_crq(adapter, &crq); | |
1893 | } | |
1894 | ||
1895 | static int send_version_xchg(struct ibmvnic_adapter *adapter) | |
1896 | { | |
1897 | union ibmvnic_crq crq; | |
1898 | ||
1899 | memset(&crq, 0, sizeof(crq)); | |
1900 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; | |
1901 | crq.version_exchange.cmd = VERSION_EXCHANGE; | |
1902 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); | |
1903 | ||
1904 | return ibmvnic_send_crq(adapter, &crq); | |
1905 | } | |
1906 | ||
1907 | static void send_login(struct ibmvnic_adapter *adapter) | |
1908 | { | |
1909 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; | |
1910 | struct ibmvnic_login_buffer *login_buffer; | |
1911 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
1912 | struct device *dev = &adapter->vdev->dev; | |
1913 | dma_addr_t rsp_buffer_token; | |
1914 | dma_addr_t buffer_token; | |
1915 | size_t rsp_buffer_size; | |
1916 | union ibmvnic_crq crq; | |
1917 | unsigned long flags; | |
1918 | size_t buffer_size; | |
1919 | __be64 *tx_list_p; | |
1920 | __be64 *rx_list_p; | |
1921 | int i; | |
1922 | ||
1923 | buffer_size = | |
1924 | sizeof(struct ibmvnic_login_buffer) + | |
1925 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues); | |
1926 | ||
1927 | login_buffer = kmalloc(buffer_size, GFP_ATOMIC); | |
1928 | if (!login_buffer) | |
1929 | goto buf_alloc_failed; | |
1930 | ||
1931 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, | |
1932 | DMA_TO_DEVICE); | |
1933 | if (dma_mapping_error(dev, buffer_token)) { | |
1934 | dev_err(dev, "Couldn't map login buffer\n"); | |
1935 | goto buf_map_failed; | |
1936 | } | |
1937 | ||
498cd8e4 JA |
1938 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
1939 | sizeof(u64) * adapter->req_tx_queues + | |
1940 | sizeof(u64) * adapter->req_rx_queues + | |
1941 | sizeof(u64) * adapter->req_rx_queues + | |
1942 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; | |
032c5e82 TF |
1943 | |
1944 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); | |
1945 | if (!login_rsp_buffer) | |
1946 | goto buf_rsp_alloc_failed; | |
1947 | ||
1948 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, | |
1949 | rsp_buffer_size, DMA_FROM_DEVICE); | |
1950 | if (dma_mapping_error(dev, rsp_buffer_token)) { | |
1951 | dev_err(dev, "Couldn't map login rsp buffer\n"); | |
1952 | goto buf_rsp_map_failed; | |
1953 | } | |
1954 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
1955 | if (!inflight_cmd) { | |
1956 | dev_err(dev, "Couldn't allocate inflight_cmd\n"); | |
1957 | goto inflight_alloc_failed; | |
1958 | } | |
1959 | adapter->login_buf = login_buffer; | |
1960 | adapter->login_buf_token = buffer_token; | |
1961 | adapter->login_buf_sz = buffer_size; | |
1962 | adapter->login_rsp_buf = login_rsp_buffer; | |
1963 | adapter->login_rsp_buf_token = rsp_buffer_token; | |
1964 | adapter->login_rsp_buf_sz = rsp_buffer_size; | |
1965 | ||
1966 | login_buffer->len = cpu_to_be32(buffer_size); | |
1967 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); | |
1968 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); | |
1969 | login_buffer->off_txcomp_subcrqs = | |
1970 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); | |
1971 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); | |
1972 | login_buffer->off_rxcomp_subcrqs = | |
1973 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + | |
1974 | sizeof(u64) * adapter->req_tx_queues); | |
1975 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); | |
1976 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); | |
1977 | ||
1978 | tx_list_p = (__be64 *)((char *)login_buffer + | |
1979 | sizeof(struct ibmvnic_login_buffer)); | |
1980 | rx_list_p = (__be64 *)((char *)login_buffer + | |
1981 | sizeof(struct ibmvnic_login_buffer) + | |
1982 | sizeof(u64) * adapter->req_tx_queues); | |
1983 | ||
1984 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1985 | if (adapter->tx_scrq[i]) { | |
1986 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> | |
1987 | crq_num); | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1992 | if (adapter->rx_scrq[i]) { | |
1993 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> | |
1994 | crq_num); | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); | |
1999 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { | |
2000 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2001 | ((unsigned long int *)(adapter->login_buf))[i]); | |
2002 | } | |
2003 | ||
2004 | memset(&crq, 0, sizeof(crq)); | |
2005 | crq.login.first = IBMVNIC_CRQ_CMD; | |
2006 | crq.login.cmd = LOGIN; | |
2007 | crq.login.ioba = cpu_to_be32(buffer_token); | |
2008 | crq.login.len = cpu_to_be32(buffer_size); | |
2009 | ||
2010 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); | |
2011 | ||
2012 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
2013 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
2014 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2015 | ||
2016 | ibmvnic_send_crq(adapter, &crq); | |
2017 | ||
2018 | return; | |
2019 | ||
2020 | inflight_alloc_failed: | |
2021 | dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, | |
2022 | DMA_FROM_DEVICE); | |
2023 | buf_rsp_map_failed: | |
2024 | kfree(login_rsp_buffer); | |
2025 | buf_rsp_alloc_failed: | |
2026 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); | |
2027 | buf_map_failed: | |
2028 | kfree(login_buffer); | |
2029 | buf_alloc_failed: | |
2030 | return; | |
2031 | } | |
2032 | ||
2033 | static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, | |
2034 | u32 len, u8 map_id) | |
2035 | { | |
2036 | union ibmvnic_crq crq; | |
2037 | ||
2038 | memset(&crq, 0, sizeof(crq)); | |
2039 | crq.request_map.first = IBMVNIC_CRQ_CMD; | |
2040 | crq.request_map.cmd = REQUEST_MAP; | |
2041 | crq.request_map.map_id = map_id; | |
2042 | crq.request_map.ioba = cpu_to_be32(addr); | |
2043 | crq.request_map.len = cpu_to_be32(len); | |
2044 | ibmvnic_send_crq(adapter, &crq); | |
2045 | } | |
2046 | ||
2047 | static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) | |
2048 | { | |
2049 | union ibmvnic_crq crq; | |
2050 | ||
2051 | memset(&crq, 0, sizeof(crq)); | |
2052 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; | |
2053 | crq.request_unmap.cmd = REQUEST_UNMAP; | |
2054 | crq.request_unmap.map_id = map_id; | |
2055 | ibmvnic_send_crq(adapter, &crq); | |
2056 | } | |
2057 | ||
2058 | static void send_map_query(struct ibmvnic_adapter *adapter) | |
2059 | { | |
2060 | union ibmvnic_crq crq; | |
2061 | ||
2062 | memset(&crq, 0, sizeof(crq)); | |
2063 | crq.query_map.first = IBMVNIC_CRQ_CMD; | |
2064 | crq.query_map.cmd = QUERY_MAP; | |
2065 | ibmvnic_send_crq(adapter, &crq); | |
2066 | } | |
2067 | ||
2068 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ | |
2069 | static void send_cap_queries(struct ibmvnic_adapter *adapter) | |
2070 | { | |
2071 | union ibmvnic_crq crq; | |
2072 | ||
901e040a | 2073 | atomic_set(&adapter->running_cap_crqs, 0); |
032c5e82 TF |
2074 | memset(&crq, 0, sizeof(crq)); |
2075 | crq.query_capability.first = IBMVNIC_CRQ_CMD; | |
2076 | crq.query_capability.cmd = QUERY_CAPABILITY; | |
2077 | ||
2078 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); | |
901e040a | 2079 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2080 | ibmvnic_send_crq(adapter, &crq); |
2081 | ||
2082 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); | |
901e040a | 2083 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2084 | ibmvnic_send_crq(adapter, &crq); |
2085 | ||
2086 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); | |
901e040a | 2087 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2088 | ibmvnic_send_crq(adapter, &crq); |
2089 | ||
2090 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); | |
901e040a | 2091 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2092 | ibmvnic_send_crq(adapter, &crq); |
2093 | ||
2094 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); | |
901e040a | 2095 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2096 | ibmvnic_send_crq(adapter, &crq); |
2097 | ||
2098 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); | |
901e040a | 2099 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2100 | ibmvnic_send_crq(adapter, &crq); |
2101 | ||
2102 | crq.query_capability.capability = | |
2103 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2104 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2105 | ibmvnic_send_crq(adapter, &crq); |
2106 | ||
2107 | crq.query_capability.capability = | |
2108 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 2109 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2110 | ibmvnic_send_crq(adapter, &crq); |
2111 | ||
2112 | crq.query_capability.capability = | |
2113 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2114 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2115 | ibmvnic_send_crq(adapter, &crq); |
2116 | ||
2117 | crq.query_capability.capability = | |
2118 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 2119 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2120 | ibmvnic_send_crq(adapter, &crq); |
2121 | ||
2122 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); | |
901e040a | 2123 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2124 | ibmvnic_send_crq(adapter, &crq); |
2125 | ||
2126 | crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); | |
901e040a | 2127 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2128 | ibmvnic_send_crq(adapter, &crq); |
2129 | ||
2130 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); | |
901e040a | 2131 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2132 | ibmvnic_send_crq(adapter, &crq); |
2133 | ||
2134 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); | |
901e040a | 2135 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2136 | ibmvnic_send_crq(adapter, &crq); |
2137 | ||
2138 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); | |
901e040a | 2139 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2140 | ibmvnic_send_crq(adapter, &crq); |
2141 | ||
2142 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); | |
901e040a | 2143 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2144 | ibmvnic_send_crq(adapter, &crq); |
2145 | ||
2146 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); | |
901e040a | 2147 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2148 | ibmvnic_send_crq(adapter, &crq); |
2149 | ||
2150 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); | |
901e040a | 2151 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2152 | ibmvnic_send_crq(adapter, &crq); |
2153 | ||
2154 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); | |
901e040a | 2155 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2156 | ibmvnic_send_crq(adapter, &crq); |
2157 | ||
2158 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); | |
901e040a | 2159 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2160 | ibmvnic_send_crq(adapter, &crq); |
2161 | ||
2162 | crq.query_capability.capability = | |
2163 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); | |
901e040a | 2164 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2165 | ibmvnic_send_crq(adapter, &crq); |
2166 | ||
2167 | crq.query_capability.capability = | |
2168 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2169 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2170 | ibmvnic_send_crq(adapter, &crq); |
2171 | ||
2172 | crq.query_capability.capability = | |
2173 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); | |
901e040a | 2174 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2175 | ibmvnic_send_crq(adapter, &crq); |
2176 | ||
2177 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); | |
901e040a | 2178 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2179 | ibmvnic_send_crq(adapter, &crq); |
2180 | } | |
2181 | ||
2182 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) | |
2183 | { | |
2184 | struct device *dev = &adapter->vdev->dev; | |
2185 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; | |
2186 | union ibmvnic_crq crq; | |
2187 | int i; | |
2188 | ||
2189 | dma_unmap_single(dev, adapter->ip_offload_tok, | |
2190 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); | |
2191 | ||
2192 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); | |
2193 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) | |
2194 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2195 | ((unsigned long int *)(buf))[i]); | |
2196 | ||
2197 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); | |
2198 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); | |
2199 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", | |
2200 | buf->tcp_ipv4_chksum); | |
2201 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", | |
2202 | buf->tcp_ipv6_chksum); | |
2203 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", | |
2204 | buf->udp_ipv4_chksum); | |
2205 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", | |
2206 | buf->udp_ipv6_chksum); | |
2207 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", | |
2208 | buf->large_tx_ipv4); | |
2209 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", | |
2210 | buf->large_tx_ipv6); | |
2211 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", | |
2212 | buf->large_rx_ipv4); | |
2213 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", | |
2214 | buf->large_rx_ipv6); | |
2215 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", | |
2216 | buf->max_ipv4_header_size); | |
2217 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", | |
2218 | buf->max_ipv6_header_size); | |
2219 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", | |
2220 | buf->max_tcp_header_size); | |
2221 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", | |
2222 | buf->max_udp_header_size); | |
2223 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", | |
2224 | buf->max_large_tx_size); | |
2225 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", | |
2226 | buf->max_large_rx_size); | |
2227 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", | |
2228 | buf->ipv6_extension_header); | |
2229 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", | |
2230 | buf->tcp_pseudosum_req); | |
2231 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", | |
2232 | buf->num_ipv6_ext_headers); | |
2233 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", | |
2234 | buf->off_ipv6_ext_headers); | |
2235 | ||
2236 | adapter->ip_offload_ctrl_tok = | |
2237 | dma_map_single(dev, &adapter->ip_offload_ctrl, | |
2238 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); | |
2239 | ||
2240 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { | |
2241 | dev_err(dev, "Couldn't map ip offload control buffer\n"); | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); | |
2246 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; | |
2247 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; | |
2248 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; | |
2249 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; | |
2250 | ||
2251 | /* large_tx/rx disabled for now, additional features needed */ | |
2252 | adapter->ip_offload_ctrl.large_tx_ipv4 = 0; | |
2253 | adapter->ip_offload_ctrl.large_tx_ipv6 = 0; | |
2254 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; | |
2255 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; | |
2256 | ||
2257 | adapter->netdev->features = NETIF_F_GSO; | |
2258 | ||
2259 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) | |
2260 | adapter->netdev->features |= NETIF_F_IP_CSUM; | |
2261 | ||
2262 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) | |
2263 | adapter->netdev->features |= NETIF_F_IPV6_CSUM; | |
2264 | ||
9be02cdf TF |
2265 | if ((adapter->netdev->features & |
2266 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) | |
2267 | adapter->netdev->features |= NETIF_F_RXCSUM; | |
2268 | ||
032c5e82 TF |
2269 | memset(&crq, 0, sizeof(crq)); |
2270 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2271 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; | |
2272 | crq.control_ip_offload.len = | |
2273 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
2274 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); | |
2275 | ibmvnic_send_crq(adapter, &crq); | |
2276 | } | |
2277 | ||
2278 | static void handle_error_info_rsp(union ibmvnic_crq *crq, | |
2279 | struct ibmvnic_adapter *adapter) | |
2280 | { | |
2281 | struct device *dev = &adapter->vdev->dev; | |
96183182 | 2282 | struct ibmvnic_error_buff *error_buff, *tmp; |
032c5e82 TF |
2283 | unsigned long flags; |
2284 | bool found = false; | |
2285 | int i; | |
2286 | ||
2287 | if (!crq->request_error_rsp.rc.code) { | |
2288 | dev_info(dev, "Request Error Rsp returned with rc=%x\n", | |
2289 | crq->request_error_rsp.rc.code); | |
2290 | return; | |
2291 | } | |
2292 | ||
2293 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
96183182 | 2294 | list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) |
032c5e82 TF |
2295 | if (error_buff->error_id == crq->request_error_rsp.error_id) { |
2296 | found = true; | |
2297 | list_del(&error_buff->list); | |
2298 | break; | |
2299 | } | |
2300 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2301 | ||
2302 | if (!found) { | |
2303 | dev_err(dev, "Couldn't find error id %x\n", | |
75224c93 | 2304 | be32_to_cpu(crq->request_error_rsp.error_id)); |
032c5e82 TF |
2305 | return; |
2306 | } | |
2307 | ||
2308 | dev_err(dev, "Detailed info for error id %x:", | |
75224c93 | 2309 | be32_to_cpu(crq->request_error_rsp.error_id)); |
032c5e82 TF |
2310 | |
2311 | for (i = 0; i < error_buff->len; i++) { | |
2312 | pr_cont("%02x", (int)error_buff->buff[i]); | |
2313 | if (i % 8 == 7) | |
2314 | pr_cont(" "); | |
2315 | } | |
2316 | pr_cont("\n"); | |
2317 | ||
2318 | dma_unmap_single(dev, error_buff->dma, error_buff->len, | |
2319 | DMA_FROM_DEVICE); | |
2320 | kfree(error_buff->buff); | |
2321 | kfree(error_buff); | |
2322 | } | |
2323 | ||
032c5e82 TF |
2324 | static void handle_error_indication(union ibmvnic_crq *crq, |
2325 | struct ibmvnic_adapter *adapter) | |
2326 | { | |
2327 | int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz); | |
2328 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
2329 | struct device *dev = &adapter->vdev->dev; | |
2330 | struct ibmvnic_error_buff *error_buff; | |
2331 | union ibmvnic_crq new_crq; | |
2332 | unsigned long flags; | |
2333 | ||
2334 | dev_err(dev, "Firmware reports %serror id %x, cause %d\n", | |
2335 | crq->error_indication. | |
2336 | flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "", | |
75224c93 TF |
2337 | be32_to_cpu(crq->error_indication.error_id), |
2338 | be16_to_cpu(crq->error_indication.error_cause)); | |
032c5e82 TF |
2339 | |
2340 | error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC); | |
2341 | if (!error_buff) | |
2342 | return; | |
2343 | ||
2344 | error_buff->buff = kmalloc(detail_len, GFP_ATOMIC); | |
2345 | if (!error_buff->buff) { | |
2346 | kfree(error_buff); | |
2347 | return; | |
2348 | } | |
2349 | ||
2350 | error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len, | |
2351 | DMA_FROM_DEVICE); | |
2352 | if (dma_mapping_error(dev, error_buff->dma)) { | |
2353 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2354 | dev_err(dev, "Couldn't map error buffer\n"); | |
2355 | kfree(error_buff->buff); | |
2356 | kfree(error_buff); | |
2357 | return; | |
2358 | } | |
2359 | ||
2360 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
2361 | if (!inflight_cmd) { | |
2362 | dma_unmap_single(dev, error_buff->dma, detail_len, | |
2363 | DMA_FROM_DEVICE); | |
2364 | kfree(error_buff->buff); | |
2365 | kfree(error_buff); | |
2366 | return; | |
2367 | } | |
2368 | ||
2369 | error_buff->len = detail_len; | |
2370 | error_buff->error_id = crq->error_indication.error_id; | |
2371 | ||
2372 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
2373 | list_add_tail(&error_buff->list, &adapter->errors); | |
2374 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2375 | ||
2376 | memset(&new_crq, 0, sizeof(new_crq)); | |
2377 | new_crq.request_error_info.first = IBMVNIC_CRQ_CMD; | |
2378 | new_crq.request_error_info.cmd = REQUEST_ERROR_INFO; | |
2379 | new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma); | |
2380 | new_crq.request_error_info.len = cpu_to_be32(detail_len); | |
2381 | new_crq.request_error_info.error_id = crq->error_indication.error_id; | |
2382 | ||
2383 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); | |
2384 | ||
2385 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
2386 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
2387 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2388 | ||
2389 | ibmvnic_send_crq(adapter, &new_crq); | |
2390 | } | |
2391 | ||
2392 | static void handle_change_mac_rsp(union ibmvnic_crq *crq, | |
2393 | struct ibmvnic_adapter *adapter) | |
2394 | { | |
2395 | struct net_device *netdev = adapter->netdev; | |
2396 | struct device *dev = &adapter->vdev->dev; | |
2397 | long rc; | |
2398 | ||
2399 | rc = crq->change_mac_addr_rsp.rc.code; | |
2400 | if (rc) { | |
2401 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); | |
2402 | return; | |
2403 | } | |
2404 | memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], | |
2405 | ETH_ALEN); | |
2406 | } | |
2407 | ||
2408 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, | |
2409 | struct ibmvnic_adapter *adapter) | |
2410 | { | |
2411 | struct device *dev = &adapter->vdev->dev; | |
2412 | u64 *req_value; | |
2413 | char *name; | |
2414 | ||
901e040a | 2415 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 TF |
2416 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { |
2417 | case REQ_TX_QUEUES: | |
2418 | req_value = &adapter->req_tx_queues; | |
2419 | name = "tx"; | |
2420 | break; | |
2421 | case REQ_RX_QUEUES: | |
2422 | req_value = &adapter->req_rx_queues; | |
2423 | name = "rx"; | |
2424 | break; | |
2425 | case REQ_RX_ADD_QUEUES: | |
2426 | req_value = &adapter->req_rx_add_queues; | |
2427 | name = "rx_add"; | |
2428 | break; | |
2429 | case REQ_TX_ENTRIES_PER_SUBCRQ: | |
2430 | req_value = &adapter->req_tx_entries_per_subcrq; | |
2431 | name = "tx_entries_per_subcrq"; | |
2432 | break; | |
2433 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2434 | req_value = &adapter->req_rx_add_entries_per_subcrq; | |
2435 | name = "rx_add_entries_per_subcrq"; | |
2436 | break; | |
2437 | case REQ_MTU: | |
2438 | req_value = &adapter->req_mtu; | |
2439 | name = "mtu"; | |
2440 | break; | |
2441 | case PROMISC_REQUESTED: | |
2442 | req_value = &adapter->promisc; | |
2443 | name = "promisc"; | |
2444 | break; | |
2445 | default: | |
2446 | dev_err(dev, "Got invalid cap request rsp %d\n", | |
2447 | crq->request_capability.capability); | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | switch (crq->request_capability_rsp.rc.code) { | |
2452 | case SUCCESS: | |
2453 | break; | |
2454 | case PARTIALSUCCESS: | |
2455 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", | |
2456 | *req_value, | |
28f4d165 | 2457 | (long int)be64_to_cpu(crq->request_capability_rsp. |
032c5e82 | 2458 | number), name); |
ea22d51a | 2459 | release_sub_crqs_no_irqs(adapter); |
28f4d165 | 2460 | *req_value = be64_to_cpu(crq->request_capability_rsp.number); |
ea22d51a | 2461 | init_sub_crqs(adapter, 1); |
032c5e82 TF |
2462 | return; |
2463 | default: | |
2464 | dev_err(dev, "Error %d in request cap rsp\n", | |
2465 | crq->request_capability_rsp.rc.code); | |
2466 | return; | |
2467 | } | |
2468 | ||
2469 | /* Done receiving requested capabilities, query IP offload support */ | |
901e040a | 2470 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
032c5e82 TF |
2471 | union ibmvnic_crq newcrq; |
2472 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); | |
2473 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = | |
2474 | &adapter->ip_offload_buf; | |
2475 | ||
249168ad | 2476 | adapter->wait_capability = false; |
032c5e82 TF |
2477 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, |
2478 | buf_sz, | |
2479 | DMA_FROM_DEVICE); | |
2480 | ||
2481 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { | |
2482 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2483 | dev_err(dev, "Couldn't map offload buffer\n"); | |
2484 | return; | |
2485 | } | |
2486 | ||
2487 | memset(&newcrq, 0, sizeof(newcrq)); | |
2488 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2489 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; | |
2490 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); | |
2491 | newcrq.query_ip_offload.ioba = | |
2492 | cpu_to_be32(adapter->ip_offload_tok); | |
2493 | ||
2494 | ibmvnic_send_crq(adapter, &newcrq); | |
2495 | } | |
2496 | } | |
2497 | ||
2498 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, | |
2499 | struct ibmvnic_adapter *adapter) | |
2500 | { | |
2501 | struct device *dev = &adapter->vdev->dev; | |
2502 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; | |
2503 | struct ibmvnic_login_buffer *login = adapter->login_buf; | |
032c5e82 TF |
2504 | int i; |
2505 | ||
2506 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, | |
2507 | DMA_BIDIRECTIONAL); | |
2508 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
2509 | adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); | |
2510 | ||
498cd8e4 JA |
2511 | /* If the number of queues requested can't be allocated by the |
2512 | * server, the login response will return with code 1. We will need | |
2513 | * to resend the login buffer with fewer queues requested. | |
2514 | */ | |
2515 | if (login_rsp_crq->generic.rc.code) { | |
2516 | adapter->renegotiate = true; | |
2517 | complete(&adapter->init_done); | |
2518 | return 0; | |
2519 | } | |
2520 | ||
032c5e82 TF |
2521 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
2522 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { | |
2523 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2524 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); | |
2525 | } | |
2526 | ||
2527 | /* Sanity checks */ | |
2528 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || | |
2529 | (be32_to_cpu(login->num_rxcomp_subcrqs) * | |
2530 | adapter->req_rx_add_queues != | |
2531 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { | |
2532 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); | |
2533 | ibmvnic_remove(adapter->vdev); | |
2534 | return -EIO; | |
2535 | } | |
2536 | complete(&adapter->init_done); | |
2537 | ||
032c5e82 TF |
2538 | return 0; |
2539 | } | |
2540 | ||
2541 | static void handle_request_map_rsp(union ibmvnic_crq *crq, | |
2542 | struct ibmvnic_adapter *adapter) | |
2543 | { | |
2544 | struct device *dev = &adapter->vdev->dev; | |
2545 | u8 map_id = crq->request_map_rsp.map_id; | |
2546 | int tx_subcrqs; | |
2547 | int rx_subcrqs; | |
2548 | long rc; | |
2549 | int i; | |
2550 | ||
2551 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
2552 | rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
2553 | ||
2554 | rc = crq->request_map_rsp.rc.code; | |
2555 | if (rc) { | |
2556 | dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc); | |
2557 | adapter->map_id--; | |
2558 | /* need to find and zero tx/rx_pool map_id */ | |
2559 | for (i = 0; i < tx_subcrqs; i++) { | |
2560 | if (adapter->tx_pool[i].long_term_buff.map_id == map_id) | |
2561 | adapter->tx_pool[i].long_term_buff.map_id = 0; | |
2562 | } | |
2563 | for (i = 0; i < rx_subcrqs; i++) { | |
2564 | if (adapter->rx_pool[i].long_term_buff.map_id == map_id) | |
2565 | adapter->rx_pool[i].long_term_buff.map_id = 0; | |
2566 | } | |
2567 | } | |
2568 | complete(&adapter->fw_done); | |
2569 | } | |
2570 | ||
2571 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, | |
2572 | struct ibmvnic_adapter *adapter) | |
2573 | { | |
2574 | struct device *dev = &adapter->vdev->dev; | |
2575 | long rc; | |
2576 | ||
2577 | rc = crq->request_unmap_rsp.rc.code; | |
2578 | if (rc) | |
2579 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); | |
2580 | } | |
2581 | ||
2582 | static void handle_query_map_rsp(union ibmvnic_crq *crq, | |
2583 | struct ibmvnic_adapter *adapter) | |
2584 | { | |
2585 | struct net_device *netdev = adapter->netdev; | |
2586 | struct device *dev = &adapter->vdev->dev; | |
2587 | long rc; | |
2588 | ||
2589 | rc = crq->query_map_rsp.rc.code; | |
2590 | if (rc) { | |
2591 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); | |
2592 | return; | |
2593 | } | |
2594 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", | |
2595 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, | |
2596 | crq->query_map_rsp.free_pages); | |
2597 | } | |
2598 | ||
2599 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, | |
2600 | struct ibmvnic_adapter *adapter) | |
2601 | { | |
2602 | struct net_device *netdev = adapter->netdev; | |
2603 | struct device *dev = &adapter->vdev->dev; | |
2604 | long rc; | |
2605 | ||
901e040a | 2606 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 | 2607 | netdev_dbg(netdev, "Outstanding queries: %d\n", |
901e040a | 2608 | atomic_read(&adapter->running_cap_crqs)); |
032c5e82 TF |
2609 | rc = crq->query_capability.rc.code; |
2610 | if (rc) { | |
2611 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); | |
2612 | goto out; | |
2613 | } | |
2614 | ||
2615 | switch (be16_to_cpu(crq->query_capability.capability)) { | |
2616 | case MIN_TX_QUEUES: | |
2617 | adapter->min_tx_queues = | |
de89e854 | 2618 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2619 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
2620 | adapter->min_tx_queues); | |
2621 | break; | |
2622 | case MIN_RX_QUEUES: | |
2623 | adapter->min_rx_queues = | |
de89e854 | 2624 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2625 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
2626 | adapter->min_rx_queues); | |
2627 | break; | |
2628 | case MIN_RX_ADD_QUEUES: | |
2629 | adapter->min_rx_add_queues = | |
de89e854 | 2630 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2631 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
2632 | adapter->min_rx_add_queues); | |
2633 | break; | |
2634 | case MAX_TX_QUEUES: | |
2635 | adapter->max_tx_queues = | |
de89e854 | 2636 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2637 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
2638 | adapter->max_tx_queues); | |
2639 | break; | |
2640 | case MAX_RX_QUEUES: | |
2641 | adapter->max_rx_queues = | |
de89e854 | 2642 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2643 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
2644 | adapter->max_rx_queues); | |
2645 | break; | |
2646 | case MAX_RX_ADD_QUEUES: | |
2647 | adapter->max_rx_add_queues = | |
de89e854 | 2648 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2649 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
2650 | adapter->max_rx_add_queues); | |
2651 | break; | |
2652 | case MIN_TX_ENTRIES_PER_SUBCRQ: | |
2653 | adapter->min_tx_entries_per_subcrq = | |
de89e854 | 2654 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2655 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
2656 | adapter->min_tx_entries_per_subcrq); | |
2657 | break; | |
2658 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2659 | adapter->min_rx_add_entries_per_subcrq = | |
de89e854 | 2660 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2661 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
2662 | adapter->min_rx_add_entries_per_subcrq); | |
2663 | break; | |
2664 | case MAX_TX_ENTRIES_PER_SUBCRQ: | |
2665 | adapter->max_tx_entries_per_subcrq = | |
de89e854 | 2666 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2667 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
2668 | adapter->max_tx_entries_per_subcrq); | |
2669 | break; | |
2670 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2671 | adapter->max_rx_add_entries_per_subcrq = | |
de89e854 | 2672 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2673 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
2674 | adapter->max_rx_add_entries_per_subcrq); | |
2675 | break; | |
2676 | case TCP_IP_OFFLOAD: | |
2677 | adapter->tcp_ip_offload = | |
de89e854 | 2678 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2679 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
2680 | adapter->tcp_ip_offload); | |
2681 | break; | |
2682 | case PROMISC_SUPPORTED: | |
2683 | adapter->promisc_supported = | |
de89e854 | 2684 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2685 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
2686 | adapter->promisc_supported); | |
2687 | break; | |
2688 | case MIN_MTU: | |
de89e854 | 2689 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 2690 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
032c5e82 TF |
2691 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
2692 | break; | |
2693 | case MAX_MTU: | |
de89e854 | 2694 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 2695 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; |
032c5e82 TF |
2696 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
2697 | break; | |
2698 | case MAX_MULTICAST_FILTERS: | |
2699 | adapter->max_multicast_filters = | |
de89e854 | 2700 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2701 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
2702 | adapter->max_multicast_filters); | |
2703 | break; | |
2704 | case VLAN_HEADER_INSERTION: | |
2705 | adapter->vlan_header_insertion = | |
de89e854 | 2706 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2707 | if (adapter->vlan_header_insertion) |
2708 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; | |
2709 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", | |
2710 | adapter->vlan_header_insertion); | |
2711 | break; | |
2712 | case MAX_TX_SG_ENTRIES: | |
2713 | adapter->max_tx_sg_entries = | |
de89e854 | 2714 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2715 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
2716 | adapter->max_tx_sg_entries); | |
2717 | break; | |
2718 | case RX_SG_SUPPORTED: | |
2719 | adapter->rx_sg_supported = | |
de89e854 | 2720 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2721 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
2722 | adapter->rx_sg_supported); | |
2723 | break; | |
2724 | case OPT_TX_COMP_SUB_QUEUES: | |
2725 | adapter->opt_tx_comp_sub_queues = | |
de89e854 | 2726 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2727 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
2728 | adapter->opt_tx_comp_sub_queues); | |
2729 | break; | |
2730 | case OPT_RX_COMP_QUEUES: | |
2731 | adapter->opt_rx_comp_queues = | |
de89e854 | 2732 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2733 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
2734 | adapter->opt_rx_comp_queues); | |
2735 | break; | |
2736 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: | |
2737 | adapter->opt_rx_bufadd_q_per_rx_comp_q = | |
de89e854 | 2738 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2739 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
2740 | adapter->opt_rx_bufadd_q_per_rx_comp_q); | |
2741 | break; | |
2742 | case OPT_TX_ENTRIES_PER_SUBCRQ: | |
2743 | adapter->opt_tx_entries_per_subcrq = | |
de89e854 | 2744 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2745 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
2746 | adapter->opt_tx_entries_per_subcrq); | |
2747 | break; | |
2748 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: | |
2749 | adapter->opt_rxba_entries_per_subcrq = | |
de89e854 | 2750 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2751 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
2752 | adapter->opt_rxba_entries_per_subcrq); | |
2753 | break; | |
2754 | case TX_RX_DESC_REQ: | |
2755 | adapter->tx_rx_desc_req = crq->query_capability.number; | |
2756 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", | |
2757 | adapter->tx_rx_desc_req); | |
2758 | break; | |
2759 | ||
2760 | default: | |
2761 | netdev_err(netdev, "Got invalid cap rsp %d\n", | |
2762 | crq->query_capability.capability); | |
2763 | } | |
2764 | ||
2765 | out: | |
249168ad TF |
2766 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
2767 | adapter->wait_capability = false; | |
ea22d51a | 2768 | init_sub_crqs(adapter, 0); |
032c5e82 | 2769 | /* We're done querying the capabilities, initialize sub-crqs */ |
249168ad | 2770 | } |
032c5e82 TF |
2771 | } |
2772 | ||
032c5e82 TF |
2773 | static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) |
2774 | { | |
96183182 | 2775 | struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1; |
032c5e82 | 2776 | struct device *dev = &adapter->vdev->dev; |
96183182 | 2777 | struct ibmvnic_error_buff *error_buff, *tmp2; |
032c5e82 TF |
2778 | unsigned long flags; |
2779 | unsigned long flags2; | |
2780 | ||
2781 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
96183182 | 2782 | list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) { |
032c5e82 TF |
2783 | switch (inflight_cmd->crq.generic.cmd) { |
2784 | case LOGIN: | |
2785 | dma_unmap_single(dev, adapter->login_buf_token, | |
2786 | adapter->login_buf_sz, | |
2787 | DMA_BIDIRECTIONAL); | |
2788 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
2789 | adapter->login_rsp_buf_sz, | |
2790 | DMA_BIDIRECTIONAL); | |
2791 | kfree(adapter->login_rsp_buf); | |
2792 | kfree(adapter->login_buf); | |
2793 | break; | |
032c5e82 TF |
2794 | case REQUEST_ERROR_INFO: |
2795 | spin_lock_irqsave(&adapter->error_list_lock, flags2); | |
96183182 WY |
2796 | list_for_each_entry_safe(error_buff, tmp2, |
2797 | &adapter->errors, list) { | |
032c5e82 TF |
2798 | dma_unmap_single(dev, error_buff->dma, |
2799 | error_buff->len, | |
2800 | DMA_FROM_DEVICE); | |
2801 | kfree(error_buff->buff); | |
2802 | list_del(&error_buff->list); | |
2803 | kfree(error_buff); | |
2804 | } | |
2805 | spin_unlock_irqrestore(&adapter->error_list_lock, | |
2806 | flags2); | |
2807 | break; | |
2808 | } | |
2809 | list_del(&inflight_cmd->list); | |
2810 | kfree(inflight_cmd); | |
2811 | } | |
2812 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2813 | } | |
2814 | ||
9888d7b0 TF |
2815 | static void ibmvnic_xport_event(struct work_struct *work) |
2816 | { | |
2817 | struct ibmvnic_adapter *adapter = container_of(work, | |
2818 | struct ibmvnic_adapter, | |
2819 | ibmvnic_xport); | |
2820 | struct device *dev = &adapter->vdev->dev; | |
2821 | long rc; | |
2822 | ||
2823 | ibmvnic_free_inflight(adapter); | |
2824 | release_sub_crqs(adapter); | |
2825 | if (adapter->migrated) { | |
2826 | rc = ibmvnic_reenable_crq_queue(adapter); | |
2827 | if (rc) | |
2828 | dev_err(dev, "Error after enable rc=%ld\n", rc); | |
2829 | adapter->migrated = false; | |
2830 | rc = ibmvnic_send_crq_init(adapter); | |
2831 | if (rc) | |
2832 | dev_err(dev, "Error sending init rc=%ld\n", rc); | |
2833 | } | |
2834 | } | |
2835 | ||
032c5e82 TF |
2836 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, |
2837 | struct ibmvnic_adapter *adapter) | |
2838 | { | |
2839 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; | |
2840 | struct net_device *netdev = adapter->netdev; | |
2841 | struct device *dev = &adapter->vdev->dev; | |
2842 | long rc; | |
2843 | ||
2844 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", | |
2845 | ((unsigned long int *)crq)[0], | |
2846 | ((unsigned long int *)crq)[1]); | |
2847 | switch (gen_crq->first) { | |
2848 | case IBMVNIC_CRQ_INIT_RSP: | |
2849 | switch (gen_crq->cmd) { | |
2850 | case IBMVNIC_CRQ_INIT: | |
2851 | dev_info(dev, "Partner initialized\n"); | |
2852 | /* Send back a response */ | |
2853 | rc = ibmvnic_send_crq_init_complete(adapter); | |
65dc6891 TF |
2854 | if (!rc) |
2855 | schedule_work(&adapter->vnic_crq_init); | |
032c5e82 TF |
2856 | else |
2857 | dev_err(dev, "Can't send initrsp rc=%ld\n", rc); | |
2858 | break; | |
2859 | case IBMVNIC_CRQ_INIT_COMPLETE: | |
2860 | dev_info(dev, "Partner initialization complete\n"); | |
2861 | send_version_xchg(adapter); | |
2862 | break; | |
2863 | default: | |
2864 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); | |
2865 | } | |
2866 | return; | |
2867 | case IBMVNIC_CRQ_XPORT_EVENT: | |
2868 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { | |
2869 | dev_info(dev, "Re-enabling adapter\n"); | |
2870 | adapter->migrated = true; | |
9888d7b0 | 2871 | schedule_work(&adapter->ibmvnic_xport); |
dfad09a6 TF |
2872 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
2873 | dev_info(dev, "Backing device failover detected\n"); | |
2874 | netif_carrier_off(netdev); | |
2875 | adapter->failover = true; | |
032c5e82 TF |
2876 | } else { |
2877 | /* The adapter lost the connection */ | |
2878 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", | |
2879 | gen_crq->cmd); | |
9888d7b0 | 2880 | schedule_work(&adapter->ibmvnic_xport); |
032c5e82 TF |
2881 | } |
2882 | return; | |
2883 | case IBMVNIC_CRQ_CMD_RSP: | |
2884 | break; | |
2885 | default: | |
2886 | dev_err(dev, "Got an invalid msg type 0x%02x\n", | |
2887 | gen_crq->first); | |
2888 | return; | |
2889 | } | |
2890 | ||
2891 | switch (gen_crq->cmd) { | |
2892 | case VERSION_EXCHANGE_RSP: | |
2893 | rc = crq->version_exchange_rsp.rc.code; | |
2894 | if (rc) { | |
2895 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); | |
2896 | break; | |
2897 | } | |
2898 | dev_info(dev, "Partner protocol version is %d\n", | |
2899 | crq->version_exchange_rsp.version); | |
2900 | if (be16_to_cpu(crq->version_exchange_rsp.version) < | |
2901 | ibmvnic_version) | |
2902 | ibmvnic_version = | |
2903 | be16_to_cpu(crq->version_exchange_rsp.version); | |
2904 | send_cap_queries(adapter); | |
2905 | break; | |
2906 | case QUERY_CAPABILITY_RSP: | |
2907 | handle_query_cap_rsp(crq, adapter); | |
2908 | break; | |
2909 | case QUERY_MAP_RSP: | |
2910 | handle_query_map_rsp(crq, adapter); | |
2911 | break; | |
2912 | case REQUEST_MAP_RSP: | |
2913 | handle_request_map_rsp(crq, adapter); | |
2914 | break; | |
2915 | case REQUEST_UNMAP_RSP: | |
2916 | handle_request_unmap_rsp(crq, adapter); | |
2917 | break; | |
2918 | case REQUEST_CAPABILITY_RSP: | |
2919 | handle_request_cap_rsp(crq, adapter); | |
2920 | break; | |
2921 | case LOGIN_RSP: | |
2922 | netdev_dbg(netdev, "Got Login Response\n"); | |
2923 | handle_login_rsp(crq, adapter); | |
2924 | break; | |
2925 | case LOGICAL_LINK_STATE_RSP: | |
2926 | netdev_dbg(netdev, "Got Logical Link State Response\n"); | |
2927 | adapter->logical_link_state = | |
2928 | crq->logical_link_state_rsp.link_state; | |
2929 | break; | |
2930 | case LINK_STATE_INDICATION: | |
2931 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); | |
2932 | adapter->phys_link_state = | |
2933 | crq->link_state_indication.phys_link_state; | |
2934 | adapter->logical_link_state = | |
2935 | crq->link_state_indication.logical_link_state; | |
2936 | break; | |
2937 | case CHANGE_MAC_ADDR_RSP: | |
2938 | netdev_dbg(netdev, "Got MAC address change Response\n"); | |
2939 | handle_change_mac_rsp(crq, adapter); | |
2940 | break; | |
2941 | case ERROR_INDICATION: | |
2942 | netdev_dbg(netdev, "Got Error Indication\n"); | |
2943 | handle_error_indication(crq, adapter); | |
2944 | break; | |
2945 | case REQUEST_ERROR_RSP: | |
2946 | netdev_dbg(netdev, "Got Error Detail Response\n"); | |
2947 | handle_error_info_rsp(crq, adapter); | |
2948 | break; | |
2949 | case REQUEST_STATISTICS_RSP: | |
2950 | netdev_dbg(netdev, "Got Statistics Response\n"); | |
2951 | complete(&adapter->stats_done); | |
2952 | break; | |
032c5e82 TF |
2953 | case QUERY_IP_OFFLOAD_RSP: |
2954 | netdev_dbg(netdev, "Got Query IP offload Response\n"); | |
2955 | handle_query_ip_offload_rsp(adapter); | |
2956 | break; | |
2957 | case MULTICAST_CTRL_RSP: | |
2958 | netdev_dbg(netdev, "Got multicast control Response\n"); | |
2959 | break; | |
2960 | case CONTROL_IP_OFFLOAD_RSP: | |
2961 | netdev_dbg(netdev, "Got Control IP offload Response\n"); | |
2962 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, | |
2963 | sizeof(adapter->ip_offload_ctrl), | |
2964 | DMA_TO_DEVICE); | |
bd0b6723 | 2965 | complete(&adapter->init_done); |
032c5e82 | 2966 | break; |
032c5e82 TF |
2967 | case COLLECT_FW_TRACE_RSP: |
2968 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); | |
2969 | complete(&adapter->fw_done); | |
2970 | break; | |
2971 | default: | |
2972 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", | |
2973 | gen_crq->cmd); | |
2974 | } | |
2975 | } | |
2976 | ||
2977 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) | |
2978 | { | |
2979 | struct ibmvnic_adapter *adapter = instance; | |
6c267b3d TF |
2980 | unsigned long flags; |
2981 | ||
2982 | spin_lock_irqsave(&adapter->crq.lock, flags); | |
2983 | vio_disable_interrupts(adapter->vdev); | |
2984 | tasklet_schedule(&adapter->tasklet); | |
2985 | spin_unlock_irqrestore(&adapter->crq.lock, flags); | |
2986 | return IRQ_HANDLED; | |
2987 | } | |
2988 | ||
2989 | static void ibmvnic_tasklet(void *data) | |
2990 | { | |
2991 | struct ibmvnic_adapter *adapter = data; | |
032c5e82 TF |
2992 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
2993 | struct vio_dev *vdev = adapter->vdev; | |
2994 | union ibmvnic_crq *crq; | |
2995 | unsigned long flags; | |
2996 | bool done = false; | |
2997 | ||
2998 | spin_lock_irqsave(&queue->lock, flags); | |
2999 | vio_disable_interrupts(vdev); | |
3000 | while (!done) { | |
3001 | /* Pull all the valid messages off the CRQ */ | |
3002 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { | |
3003 | ibmvnic_handle_crq(crq, adapter); | |
3004 | crq->generic.first = 0; | |
3005 | } | |
3006 | vio_enable_interrupts(vdev); | |
3007 | crq = ibmvnic_next_crq(adapter); | |
3008 | if (crq) { | |
3009 | vio_disable_interrupts(vdev); | |
3010 | ibmvnic_handle_crq(crq, adapter); | |
3011 | crq->generic.first = 0; | |
3012 | } else { | |
249168ad TF |
3013 | /* remain in tasklet until all |
3014 | * capabilities responses are received | |
3015 | */ | |
3016 | if (!adapter->wait_capability) | |
3017 | done = true; | |
032c5e82 TF |
3018 | } |
3019 | } | |
249168ad TF |
3020 | /* if capabilities CRQ's were sent in this tasklet, the following |
3021 | * tasklet must wait until all responses are received | |
3022 | */ | |
3023 | if (atomic_read(&adapter->running_cap_crqs) != 0) | |
3024 | adapter->wait_capability = true; | |
032c5e82 | 3025 | spin_unlock_irqrestore(&queue->lock, flags); |
032c5e82 TF |
3026 | } |
3027 | ||
3028 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) | |
3029 | { | |
3030 | struct vio_dev *vdev = adapter->vdev; | |
3031 | int rc; | |
3032 | ||
3033 | do { | |
3034 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); | |
3035 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3036 | ||
3037 | if (rc) | |
3038 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); | |
3039 | ||
3040 | return rc; | |
3041 | } | |
3042 | ||
3043 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) | |
3044 | { | |
3045 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3046 | struct device *dev = &adapter->vdev->dev; | |
3047 | struct vio_dev *vdev = adapter->vdev; | |
3048 | int rc; | |
3049 | ||
3050 | /* Close the CRQ */ | |
3051 | do { | |
3052 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3053 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3054 | ||
3055 | /* Clean out the queue */ | |
3056 | memset(crq->msgs, 0, PAGE_SIZE); | |
3057 | crq->cur = 0; | |
3058 | ||
3059 | /* And re-open it again */ | |
3060 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3061 | crq->msg_token, PAGE_SIZE); | |
3062 | ||
3063 | if (rc == H_CLOSED) | |
3064 | /* Adapter is good, but other end is not ready */ | |
3065 | dev_warn(dev, "Partner adapter not ready\n"); | |
3066 | else if (rc != 0) | |
3067 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); | |
3068 | ||
3069 | return rc; | |
3070 | } | |
3071 | ||
f992887c | 3072 | static void release_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3073 | { |
3074 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3075 | struct vio_dev *vdev = adapter->vdev; | |
3076 | long rc; | |
3077 | ||
f992887c NF |
3078 | if (!crq->msgs) |
3079 | return; | |
3080 | ||
032c5e82 TF |
3081 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); |
3082 | free_irq(vdev->irq, adapter); | |
6c267b3d | 3083 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
3084 | do { |
3085 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3086 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3087 | ||
3088 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, | |
3089 | DMA_BIDIRECTIONAL); | |
3090 | free_page((unsigned long)crq->msgs); | |
f992887c | 3091 | crq->msgs = NULL; |
032c5e82 TF |
3092 | } |
3093 | ||
f992887c | 3094 | static int init_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3095 | { |
3096 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3097 | struct device *dev = &adapter->vdev->dev; | |
3098 | struct vio_dev *vdev = adapter->vdev; | |
3099 | int rc, retrc = -ENOMEM; | |
3100 | ||
f992887c NF |
3101 | if (crq->msgs) |
3102 | return 0; | |
3103 | ||
032c5e82 TF |
3104 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); |
3105 | /* Should we allocate more than one page? */ | |
3106 | ||
3107 | if (!crq->msgs) | |
3108 | return -ENOMEM; | |
3109 | ||
3110 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); | |
3111 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, | |
3112 | DMA_BIDIRECTIONAL); | |
3113 | if (dma_mapping_error(dev, crq->msg_token)) | |
3114 | goto map_failed; | |
3115 | ||
3116 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3117 | crq->msg_token, PAGE_SIZE); | |
3118 | ||
3119 | if (rc == H_RESOURCE) | |
3120 | /* maybe kexecing and resource is busy. try a reset */ | |
3121 | rc = ibmvnic_reset_crq(adapter); | |
3122 | retrc = rc; | |
3123 | ||
3124 | if (rc == H_CLOSED) { | |
3125 | dev_warn(dev, "Partner adapter not ready\n"); | |
3126 | } else if (rc) { | |
3127 | dev_warn(dev, "Error %d opening adapter\n", rc); | |
3128 | goto reg_crq_failed; | |
3129 | } | |
3130 | ||
3131 | retrc = 0; | |
3132 | ||
6c267b3d TF |
3133 | tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet, |
3134 | (unsigned long)adapter); | |
3135 | ||
032c5e82 TF |
3136 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); |
3137 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, | |
3138 | adapter); | |
3139 | if (rc) { | |
3140 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", | |
3141 | vdev->irq, rc); | |
3142 | goto req_irq_failed; | |
3143 | } | |
3144 | ||
3145 | rc = vio_enable_interrupts(vdev); | |
3146 | if (rc) { | |
3147 | dev_err(dev, "Error %d enabling interrupts\n", rc); | |
3148 | goto req_irq_failed; | |
3149 | } | |
3150 | ||
3151 | crq->cur = 0; | |
3152 | spin_lock_init(&crq->lock); | |
3153 | ||
3154 | return retrc; | |
3155 | ||
3156 | req_irq_failed: | |
6c267b3d | 3157 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
3158 | do { |
3159 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3160 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3161 | reg_crq_failed: | |
3162 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
3163 | map_failed: | |
3164 | free_page((unsigned long)crq->msgs); | |
f992887c | 3165 | crq->msgs = NULL; |
032c5e82 TF |
3166 | return retrc; |
3167 | } | |
3168 | ||
65dc6891 TF |
3169 | static void handle_crq_init_rsp(struct work_struct *work) |
3170 | { | |
3171 | struct ibmvnic_adapter *adapter = container_of(work, | |
3172 | struct ibmvnic_adapter, | |
3173 | vnic_crq_init); | |
3174 | struct device *dev = &adapter->vdev->dev; | |
3175 | struct net_device *netdev = adapter->netdev; | |
3176 | unsigned long timeout = msecs_to_jiffies(30000); | |
dfad09a6 | 3177 | bool restart = false; |
65dc6891 TF |
3178 | int rc; |
3179 | ||
dfad09a6 TF |
3180 | if (adapter->failover) { |
3181 | release_sub_crqs(adapter); | |
3182 | if (netif_running(netdev)) { | |
3183 | netif_tx_disable(netdev); | |
3184 | ibmvnic_close(netdev); | |
3185 | restart = true; | |
3186 | } | |
3187 | } | |
3188 | ||
65dc6891 | 3189 | reinit_completion(&adapter->init_done); |
db5d0b59 | 3190 | send_version_xchg(adapter); |
65dc6891 TF |
3191 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { |
3192 | dev_err(dev, "Passive init timeout\n"); | |
3193 | goto task_failed; | |
3194 | } | |
3195 | ||
f39f0d1e | 3196 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
65dc6891 | 3197 | |
dfad09a6 TF |
3198 | if (adapter->failover) { |
3199 | adapter->failover = false; | |
3200 | if (restart) { | |
3201 | rc = ibmvnic_open(netdev); | |
3202 | if (rc) | |
3203 | goto restart_failed; | |
3204 | } | |
3205 | netif_carrier_on(netdev); | |
3206 | return; | |
3207 | } | |
3208 | ||
65dc6891 TF |
3209 | rc = register_netdev(netdev); |
3210 | if (rc) { | |
3211 | dev_err(dev, | |
3212 | "failed to register netdev rc=%d\n", rc); | |
3213 | goto register_failed; | |
3214 | } | |
3215 | dev_info(dev, "ibmvnic registered\n"); | |
3216 | ||
3217 | return; | |
3218 | ||
dfad09a6 TF |
3219 | restart_failed: |
3220 | dev_err(dev, "Failed to restart ibmvnic, rc=%d\n", rc); | |
65dc6891 TF |
3221 | register_failed: |
3222 | release_sub_crqs(adapter); | |
3223 | task_failed: | |
3224 | dev_err(dev, "Passive initialization was not successful\n"); | |
3225 | } | |
3226 | ||
f6ef6408 | 3227 | static int ibmvnic_init(struct ibmvnic_adapter *adapter) |
032c5e82 | 3228 | { |
f6ef6408 | 3229 | struct device *dev = &adapter->vdev->dev; |
ea22d51a | 3230 | unsigned long timeout = msecs_to_jiffies(30000); |
f6ef6408 JA |
3231 | int rc; |
3232 | ||
f992887c | 3233 | rc = init_crq_queue(adapter); |
f6ef6408 JA |
3234 | if (rc) { |
3235 | dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); | |
3236 | return rc; | |
3237 | } | |
3238 | ||
3239 | adapter->stats_token = dma_map_single(dev, &adapter->stats, | |
3240 | sizeof(struct ibmvnic_statistics), | |
3241 | DMA_FROM_DEVICE); | |
3242 | if (dma_mapping_error(dev, adapter->stats_token)) { | |
f992887c | 3243 | release_crq_queue(adapter); |
f6ef6408 JA |
3244 | dev_err(dev, "Couldn't map stats buffer\n"); |
3245 | return -ENOMEM; | |
3246 | } | |
3247 | ||
f6ef6408 JA |
3248 | init_completion(&adapter->init_done); |
3249 | ibmvnic_send_crq_init(adapter); | |
3250 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
3251 | dev_err(dev, "Initialization sequence timed out\n"); | |
f992887c | 3252 | release_crq_queue(adapter); |
f6ef6408 JA |
3253 | return -1; |
3254 | } | |
3255 | ||
3256 | return 0; | |
3257 | } | |
3258 | ||
3259 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) | |
3260 | { | |
032c5e82 TF |
3261 | struct ibmvnic_adapter *adapter; |
3262 | struct net_device *netdev; | |
3263 | unsigned char *mac_addr_p; | |
032c5e82 TF |
3264 | int rc; |
3265 | ||
3266 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", | |
3267 | dev->unit_address); | |
3268 | ||
3269 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, | |
3270 | VETH_MAC_ADDR, NULL); | |
3271 | if (!mac_addr_p) { | |
3272 | dev_err(&dev->dev, | |
3273 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", | |
3274 | __FILE__, __LINE__); | |
3275 | return 0; | |
3276 | } | |
3277 | ||
3278 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), | |
3279 | IBMVNIC_MAX_TX_QUEUES); | |
3280 | if (!netdev) | |
3281 | return -ENOMEM; | |
3282 | ||
3283 | adapter = netdev_priv(netdev); | |
3284 | dev_set_drvdata(&dev->dev, netdev); | |
3285 | adapter->vdev = dev; | |
3286 | adapter->netdev = netdev; | |
dfad09a6 | 3287 | adapter->failover = false; |
032c5e82 TF |
3288 | |
3289 | ether_addr_copy(adapter->mac_addr, mac_addr_p); | |
3290 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); | |
3291 | netdev->irq = dev->irq; | |
3292 | netdev->netdev_ops = &ibmvnic_netdev_ops; | |
3293 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; | |
3294 | SET_NETDEV_DEV(netdev, &dev->dev); | |
3295 | ||
65dc6891 | 3296 | INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp); |
9888d7b0 | 3297 | INIT_WORK(&adapter->ibmvnic_xport, ibmvnic_xport_event); |
65dc6891 | 3298 | |
032c5e82 TF |
3299 | spin_lock_init(&adapter->stats_lock); |
3300 | ||
032c5e82 TF |
3301 | INIT_LIST_HEAD(&adapter->errors); |
3302 | INIT_LIST_HEAD(&adapter->inflight); | |
3303 | spin_lock_init(&adapter->error_list_lock); | |
3304 | spin_lock_init(&adapter->inflight_lock); | |
3305 | ||
f6ef6408 JA |
3306 | rc = ibmvnic_init(adapter); |
3307 | if (rc) { | |
3308 | free_netdev(netdev); | |
3309 | return rc; | |
032c5e82 | 3310 | } |
032c5e82 | 3311 | |
f39f0d1e | 3312 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
ea5509f5 | 3313 | adapter->is_closed = false; |
032c5e82 TF |
3314 | |
3315 | rc = register_netdev(netdev); | |
3316 | if (rc) { | |
3317 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); | |
f6ef6408 JA |
3318 | free_netdev(netdev); |
3319 | return rc; | |
032c5e82 TF |
3320 | } |
3321 | dev_info(&dev->dev, "ibmvnic registered\n"); | |
3322 | ||
3323 | return 0; | |
032c5e82 TF |
3324 | } |
3325 | ||
3326 | static int ibmvnic_remove(struct vio_dev *dev) | |
3327 | { | |
3328 | struct net_device *netdev = dev_get_drvdata(&dev->dev); | |
032c5e82 TF |
3329 | |
3330 | unregister_netdev(netdev); | |
032c5e82 TF |
3331 | free_netdev(netdev); |
3332 | dev_set_drvdata(&dev->dev, NULL); | |
3333 | ||
3334 | return 0; | |
3335 | } | |
3336 | ||
3337 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) | |
3338 | { | |
3339 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
3340 | struct ibmvnic_adapter *adapter; | |
3341 | struct iommu_table *tbl; | |
3342 | unsigned long ret = 0; | |
3343 | int i; | |
3344 | ||
3345 | tbl = get_iommu_table_base(&vdev->dev); | |
3346 | ||
3347 | /* netdev inits at probe time along with the structures we need below*/ | |
3348 | if (!netdev) | |
3349 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); | |
3350 | ||
3351 | adapter = netdev_priv(netdev); | |
3352 | ||
3353 | ret += PAGE_SIZE; /* the crq message queue */ | |
3354 | ret += adapter->bounce_buffer_size; | |
3355 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); | |
3356 | ||
3357 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) | |
3358 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ | |
3359 | ||
3360 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
3361 | i++) | |
3362 | ret += adapter->rx_pool[i].size * | |
3363 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); | |
3364 | ||
3365 | return ret; | |
3366 | } | |
3367 | ||
3368 | static int ibmvnic_resume(struct device *dev) | |
3369 | { | |
3370 | struct net_device *netdev = dev_get_drvdata(dev); | |
3371 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3372 | int i; | |
3373 | ||
3374 | /* kick the interrupt handlers just in case we lost an interrupt */ | |
3375 | for (i = 0; i < adapter->req_rx_queues; i++) | |
3376 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
3377 | adapter->rx_scrq[i]); | |
3378 | ||
3379 | return 0; | |
3380 | } | |
3381 | ||
3382 | static struct vio_device_id ibmvnic_device_table[] = { | |
3383 | {"network", "IBM,vnic"}, | |
3384 | {"", "" } | |
3385 | }; | |
3386 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); | |
3387 | ||
3388 | static const struct dev_pm_ops ibmvnic_pm_ops = { | |
3389 | .resume = ibmvnic_resume | |
3390 | }; | |
3391 | ||
3392 | static struct vio_driver ibmvnic_driver = { | |
3393 | .id_table = ibmvnic_device_table, | |
3394 | .probe = ibmvnic_probe, | |
3395 | .remove = ibmvnic_remove, | |
3396 | .get_desired_dma = ibmvnic_get_desired_dma, | |
3397 | .name = ibmvnic_driver_name, | |
3398 | .pm = &ibmvnic_pm_ops, | |
3399 | }; | |
3400 | ||
3401 | /* module functions */ | |
3402 | static int __init ibmvnic_module_init(void) | |
3403 | { | |
3404 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, | |
3405 | IBMVNIC_DRIVER_VERSION); | |
3406 | ||
3407 | return vio_register_driver(&ibmvnic_driver); | |
3408 | } | |
3409 | ||
3410 | static void __exit ibmvnic_module_exit(void) | |
3411 | { | |
3412 | vio_unregister_driver(&ibmvnic_driver); | |
3413 | } | |
3414 | ||
3415 | module_init(ibmvnic_module_init); | |
3416 | module_exit(ibmvnic_module_exit); |