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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 *); | |
91 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); | |
92 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); | |
93 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); | |
94 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); | |
95 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
96 | union sub_crq *sub_crq); | |
ad7775dc | 97 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
032c5e82 TF |
98 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
99 | static int enable_scrq_irq(struct ibmvnic_adapter *, | |
100 | struct ibmvnic_sub_crq_queue *); | |
101 | static int disable_scrq_irq(struct ibmvnic_adapter *, | |
102 | struct ibmvnic_sub_crq_queue *); | |
103 | static int pending_scrq(struct ibmvnic_adapter *, | |
104 | struct ibmvnic_sub_crq_queue *); | |
105 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, | |
106 | struct ibmvnic_sub_crq_queue *); | |
107 | static int ibmvnic_poll(struct napi_struct *napi, int data); | |
108 | static void send_map_query(struct ibmvnic_adapter *adapter); | |
109 | static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); | |
110 | static void send_request_unmap(struct ibmvnic_adapter *, u8); | |
bd0b6723 JA |
111 | static void send_login(struct ibmvnic_adapter *adapter); |
112 | static void send_cap_queries(struct ibmvnic_adapter *adapter); | |
113 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter); | |
ea5509f5 | 114 | static int ibmvnic_init(struct ibmvnic_adapter *); |
f992887c | 115 | static void release_crq_queue(struct ibmvnic_adapter *); |
032c5e82 TF |
116 | |
117 | struct ibmvnic_stat { | |
118 | char name[ETH_GSTRING_LEN]; | |
119 | int offset; | |
120 | }; | |
121 | ||
122 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ | |
123 | offsetof(struct ibmvnic_statistics, stat)) | |
124 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) | |
125 | ||
126 | static const struct ibmvnic_stat ibmvnic_stats[] = { | |
127 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, | |
128 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, | |
129 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, | |
130 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, | |
131 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, | |
132 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, | |
133 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, | |
134 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, | |
135 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, | |
136 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, | |
137 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, | |
138 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, | |
139 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, | |
140 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, | |
141 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, | |
142 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, | |
143 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, | |
144 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, | |
145 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, | |
146 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, | |
147 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, | |
148 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, | |
149 | }; | |
150 | ||
151 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, | |
152 | unsigned long length, unsigned long *number, | |
153 | unsigned long *irq) | |
154 | { | |
155 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
156 | long rc; | |
157 | ||
158 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); | |
159 | *number = retbuf[0]; | |
160 | *irq = retbuf[1]; | |
161 | ||
162 | return rc; | |
163 | } | |
164 | ||
032c5e82 TF |
165 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, |
166 | struct ibmvnic_long_term_buff *ltb, int size) | |
167 | { | |
168 | struct device *dev = &adapter->vdev->dev; | |
169 | ||
170 | ltb->size = size; | |
171 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, | |
172 | GFP_KERNEL); | |
173 | ||
174 | if (!ltb->buff) { | |
175 | dev_err(dev, "Couldn't alloc long term buffer\n"); | |
176 | return -ENOMEM; | |
177 | } | |
178 | ltb->map_id = adapter->map_id; | |
179 | adapter->map_id++; | |
db5d0b59 NF |
180 | |
181 | init_completion(&adapter->fw_done); | |
032c5e82 TF |
182 | send_request_map(adapter, ltb->addr, |
183 | ltb->size, ltb->map_id); | |
032c5e82 TF |
184 | wait_for_completion(&adapter->fw_done); |
185 | return 0; | |
186 | } | |
187 | ||
188 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, | |
189 | struct ibmvnic_long_term_buff *ltb) | |
190 | { | |
191 | struct device *dev = &adapter->vdev->dev; | |
192 | ||
c657e32c NF |
193 | if (!ltb->buff) |
194 | return; | |
195 | ||
032c5e82 | 196 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
dfad09a6 TF |
197 | if (!adapter->failover) |
198 | send_request_unmap(adapter, ltb->map_id); | |
032c5e82 TF |
199 | } |
200 | ||
032c5e82 TF |
201 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, |
202 | struct ibmvnic_rx_pool *pool) | |
203 | { | |
204 | int count = pool->size - atomic_read(&pool->available); | |
205 | struct device *dev = &adapter->vdev->dev; | |
206 | int buffers_added = 0; | |
207 | unsigned long lpar_rc; | |
208 | union sub_crq sub_crq; | |
209 | struct sk_buff *skb; | |
210 | unsigned int offset; | |
211 | dma_addr_t dma_addr; | |
212 | unsigned char *dst; | |
213 | u64 *handle_array; | |
214 | int shift = 0; | |
215 | int index; | |
216 | int i; | |
217 | ||
218 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
219 | be32_to_cpu(adapter->login_rsp_buf-> | |
220 | off_rxadd_subcrqs)); | |
221 | ||
222 | for (i = 0; i < count; ++i) { | |
223 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
224 | if (!skb) { | |
225 | dev_err(dev, "Couldn't replenish rx buff\n"); | |
226 | adapter->replenish_no_mem++; | |
227 | break; | |
228 | } | |
229 | ||
230 | index = pool->free_map[pool->next_free]; | |
231 | ||
232 | if (pool->rx_buff[index].skb) | |
233 | dev_err(dev, "Inconsistent free_map!\n"); | |
234 | ||
235 | /* Copy the skb to the long term mapped DMA buffer */ | |
236 | offset = index * pool->buff_size; | |
237 | dst = pool->long_term_buff.buff + offset; | |
238 | memset(dst, 0, pool->buff_size); | |
239 | dma_addr = pool->long_term_buff.addr + offset; | |
240 | pool->rx_buff[index].data = dst; | |
241 | ||
242 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; | |
243 | pool->rx_buff[index].dma = dma_addr; | |
244 | pool->rx_buff[index].skb = skb; | |
245 | pool->rx_buff[index].pool_index = pool->index; | |
246 | pool->rx_buff[index].size = pool->buff_size; | |
247 | ||
248 | memset(&sub_crq, 0, sizeof(sub_crq)); | |
249 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; | |
250 | sub_crq.rx_add.correlator = | |
251 | cpu_to_be64((u64)&pool->rx_buff[index]); | |
252 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); | |
253 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; | |
254 | ||
255 | /* The length field of the sCRQ is defined to be 24 bits so the | |
256 | * buffer size needs to be left shifted by a byte before it is | |
257 | * converted to big endian to prevent the last byte from being | |
258 | * truncated. | |
259 | */ | |
260 | #ifdef __LITTLE_ENDIAN__ | |
261 | shift = 8; | |
262 | #endif | |
263 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); | |
264 | ||
265 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], | |
266 | &sub_crq); | |
267 | if (lpar_rc != H_SUCCESS) | |
268 | goto failure; | |
269 | ||
270 | buffers_added++; | |
271 | adapter->replenish_add_buff_success++; | |
272 | pool->next_free = (pool->next_free + 1) % pool->size; | |
273 | } | |
274 | atomic_add(buffers_added, &pool->available); | |
275 | return; | |
276 | ||
277 | failure: | |
278 | dev_info(dev, "replenish pools failure\n"); | |
279 | pool->free_map[pool->next_free] = index; | |
280 | pool->rx_buff[index].skb = NULL; | |
281 | if (!dma_mapping_error(dev, dma_addr)) | |
282 | dma_unmap_single(dev, dma_addr, pool->buff_size, | |
283 | DMA_FROM_DEVICE); | |
284 | ||
285 | dev_kfree_skb_any(skb); | |
286 | adapter->replenish_add_buff_failure++; | |
287 | atomic_add(buffers_added, &pool->available); | |
288 | } | |
289 | ||
290 | static void replenish_pools(struct ibmvnic_adapter *adapter) | |
291 | { | |
292 | int i; | |
293 | ||
294 | if (adapter->migrated) | |
295 | return; | |
296 | ||
297 | adapter->replenish_task_cycles++; | |
298 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
299 | i++) { | |
300 | if (adapter->rx_pool[i].active) | |
301 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); | |
302 | } | |
303 | } | |
304 | ||
7bbc27a4 NF |
305 | static void release_stats_token(struct ibmvnic_adapter *adapter) |
306 | { | |
307 | struct device *dev = &adapter->vdev->dev; | |
308 | ||
309 | if (!adapter->stats_token) | |
310 | return; | |
311 | ||
312 | dma_unmap_single(dev, adapter->stats_token, | |
313 | sizeof(struct ibmvnic_statistics), | |
314 | DMA_FROM_DEVICE); | |
315 | adapter->stats_token = 0; | |
316 | } | |
317 | ||
318 | static int init_stats_token(struct ibmvnic_adapter *adapter) | |
319 | { | |
320 | struct device *dev = &adapter->vdev->dev; | |
321 | dma_addr_t stok; | |
322 | ||
323 | stok = dma_map_single(dev, &adapter->stats, | |
324 | sizeof(struct ibmvnic_statistics), | |
325 | DMA_FROM_DEVICE); | |
326 | if (dma_mapping_error(dev, stok)) { | |
327 | dev_err(dev, "Couldn't map stats buffer\n"); | |
328 | return -1; | |
329 | } | |
330 | ||
331 | adapter->stats_token = stok; | |
332 | return 0; | |
333 | } | |
334 | ||
0ffe2cb7 | 335 | static void release_rx_pools(struct ibmvnic_adapter *adapter) |
032c5e82 | 336 | { |
0ffe2cb7 NF |
337 | struct ibmvnic_rx_pool *rx_pool; |
338 | int rx_scrqs; | |
339 | int i, j; | |
032c5e82 | 340 | |
0ffe2cb7 | 341 | if (!adapter->rx_pool) |
032c5e82 TF |
342 | return; |
343 | ||
0ffe2cb7 NF |
344 | rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
345 | for (i = 0; i < rx_scrqs; i++) { | |
346 | rx_pool = &adapter->rx_pool[i]; | |
347 | ||
348 | kfree(rx_pool->free_map); | |
349 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
350 | ||
351 | if (!rx_pool->rx_buff) | |
352 | continue; | |
353 | ||
354 | for (j = 0; j < rx_pool->size; j++) { | |
355 | if (rx_pool->rx_buff[j].skb) { | |
356 | dev_kfree_skb_any(rx_pool->rx_buff[i].skb); | |
357 | rx_pool->rx_buff[i].skb = NULL; | |
358 | } | |
359 | } | |
360 | ||
361 | kfree(rx_pool->rx_buff); | |
362 | } | |
363 | ||
364 | kfree(adapter->rx_pool); | |
365 | adapter->rx_pool = NULL; | |
366 | } | |
367 | ||
368 | static int init_rx_pools(struct net_device *netdev) | |
369 | { | |
370 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
371 | struct device *dev = &adapter->vdev->dev; | |
372 | struct ibmvnic_rx_pool *rx_pool; | |
373 | int rxadd_subcrqs; | |
374 | u64 *size_array; | |
375 | int i, j; | |
376 | ||
377 | rxadd_subcrqs = | |
378 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
379 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
380 | be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size)); | |
381 | ||
382 | adapter->rx_pool = kcalloc(rxadd_subcrqs, | |
383 | sizeof(struct ibmvnic_rx_pool), | |
384 | GFP_KERNEL); | |
385 | if (!adapter->rx_pool) { | |
386 | dev_err(dev, "Failed to allocate rx pools\n"); | |
387 | return -1; | |
388 | } | |
389 | ||
390 | for (i = 0; i < rxadd_subcrqs; i++) { | |
391 | rx_pool = &adapter->rx_pool[i]; | |
392 | ||
393 | netdev_dbg(adapter->netdev, | |
394 | "Initializing rx_pool %d, %lld buffs, %lld bytes each\n", | |
395 | i, adapter->req_rx_add_entries_per_subcrq, | |
396 | be64_to_cpu(size_array[i])); | |
397 | ||
398 | rx_pool->size = adapter->req_rx_add_entries_per_subcrq; | |
399 | rx_pool->index = i; | |
400 | rx_pool->buff_size = be64_to_cpu(size_array[i]); | |
401 | rx_pool->active = 1; | |
402 | ||
403 | rx_pool->free_map = kcalloc(rx_pool->size, sizeof(int), | |
404 | GFP_KERNEL); | |
405 | if (!rx_pool->free_map) { | |
406 | release_rx_pools(adapter); | |
407 | return -1; | |
032c5e82 | 408 | } |
0ffe2cb7 NF |
409 | |
410 | rx_pool->rx_buff = kcalloc(rx_pool->size, | |
411 | sizeof(struct ibmvnic_rx_buff), | |
412 | GFP_KERNEL); | |
413 | if (!rx_pool->rx_buff) { | |
414 | dev_err(dev, "Couldn't alloc rx buffers\n"); | |
415 | release_rx_pools(adapter); | |
416 | return -1; | |
417 | } | |
418 | ||
419 | if (alloc_long_term_buff(adapter, &rx_pool->long_term_buff, | |
420 | rx_pool->size * rx_pool->buff_size)) { | |
421 | release_rx_pools(adapter); | |
422 | return -1; | |
423 | } | |
424 | ||
425 | for (j = 0; j < rx_pool->size; ++j) | |
426 | rx_pool->free_map[j] = j; | |
427 | ||
428 | atomic_set(&rx_pool->available, 0); | |
429 | rx_pool->next_alloc = 0; | |
430 | rx_pool->next_free = 0; | |
032c5e82 | 431 | } |
0ffe2cb7 NF |
432 | |
433 | return 0; | |
032c5e82 TF |
434 | } |
435 | ||
c657e32c NF |
436 | static void release_tx_pools(struct ibmvnic_adapter *adapter) |
437 | { | |
438 | struct ibmvnic_tx_pool *tx_pool; | |
439 | int i, tx_scrqs; | |
440 | ||
441 | if (!adapter->tx_pool) | |
442 | return; | |
443 | ||
444 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
445 | for (i = 0; i < tx_scrqs; i++) { | |
446 | tx_pool = &adapter->tx_pool[i]; | |
447 | kfree(tx_pool->tx_buff); | |
448 | free_long_term_buff(adapter, &tx_pool->long_term_buff); | |
449 | kfree(tx_pool->free_map); | |
450 | } | |
451 | ||
452 | kfree(adapter->tx_pool); | |
453 | adapter->tx_pool = NULL; | |
454 | } | |
455 | ||
456 | static int init_tx_pools(struct net_device *netdev) | |
457 | { | |
458 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
459 | struct device *dev = &adapter->vdev->dev; | |
460 | struct ibmvnic_tx_pool *tx_pool; | |
461 | int tx_subcrqs; | |
462 | int i, j; | |
463 | ||
464 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
465 | adapter->tx_pool = kcalloc(tx_subcrqs, | |
466 | sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
467 | if (!adapter->tx_pool) | |
468 | return -1; | |
469 | ||
470 | for (i = 0; i < tx_subcrqs; i++) { | |
471 | tx_pool = &adapter->tx_pool[i]; | |
472 | tx_pool->tx_buff = kcalloc(adapter->req_tx_entries_per_subcrq, | |
473 | sizeof(struct ibmvnic_tx_buff), | |
474 | GFP_KERNEL); | |
475 | if (!tx_pool->tx_buff) { | |
476 | dev_err(dev, "tx pool buffer allocation failed\n"); | |
477 | release_tx_pools(adapter); | |
478 | return -1; | |
479 | } | |
480 | ||
481 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, | |
482 | adapter->req_tx_entries_per_subcrq * | |
483 | adapter->req_mtu)) { | |
484 | release_tx_pools(adapter); | |
485 | return -1; | |
486 | } | |
487 | ||
488 | tx_pool->free_map = kcalloc(adapter->req_tx_entries_per_subcrq, | |
489 | sizeof(int), GFP_KERNEL); | |
490 | if (!tx_pool->free_map) { | |
491 | release_tx_pools(adapter); | |
492 | return -1; | |
493 | } | |
494 | ||
495 | for (j = 0; j < adapter->req_tx_entries_per_subcrq; j++) | |
496 | tx_pool->free_map[j] = j; | |
497 | ||
498 | tx_pool->consumer_index = 0; | |
499 | tx_pool->producer_index = 0; | |
500 | } | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
f0b8c96c NF |
505 | static void release_bounce_buffer(struct ibmvnic_adapter *adapter) |
506 | { | |
507 | struct device *dev = &adapter->vdev->dev; | |
508 | ||
509 | if (!adapter->bounce_buffer) | |
510 | return; | |
511 | ||
512 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { | |
513 | dma_unmap_single(dev, adapter->bounce_buffer_dma, | |
514 | adapter->bounce_buffer_size, | |
515 | DMA_BIDIRECTIONAL); | |
516 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
517 | } | |
518 | ||
519 | kfree(adapter->bounce_buffer); | |
520 | adapter->bounce_buffer = NULL; | |
521 | } | |
522 | ||
523 | static int init_bounce_buffer(struct net_device *netdev) | |
524 | { | |
525 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
526 | struct device *dev = &adapter->vdev->dev; | |
527 | char *buf; | |
528 | int buf_sz; | |
529 | dma_addr_t map_addr; | |
530 | ||
531 | buf_sz = (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1; | |
532 | buf = kmalloc(adapter->bounce_buffer_size, GFP_KERNEL); | |
533 | if (!buf) | |
534 | return -1; | |
535 | ||
536 | map_addr = dma_map_single(dev, buf, buf_sz, DMA_TO_DEVICE); | |
537 | if (dma_mapping_error(dev, map_addr)) { | |
538 | dev_err(dev, "Couldn't map bounce buffer\n"); | |
539 | kfree(buf); | |
540 | return -1; | |
541 | } | |
542 | ||
543 | adapter->bounce_buffer = buf; | |
544 | adapter->bounce_buffer_size = buf_sz; | |
545 | adapter->bounce_buffer_dma = map_addr; | |
546 | return 0; | |
547 | } | |
548 | ||
a57a5d25 | 549 | static int ibmvnic_login(struct net_device *netdev) |
032c5e82 TF |
550 | { |
551 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
bd0b6723 | 552 | unsigned long timeout = msecs_to_jiffies(30000); |
032c5e82 | 553 | struct device *dev = &adapter->vdev->dev; |
032c5e82 | 554 | |
bd0b6723 JA |
555 | do { |
556 | if (adapter->renegotiate) { | |
557 | adapter->renegotiate = false; | |
b510888f | 558 | release_sub_crqs(adapter); |
bd0b6723 JA |
559 | |
560 | reinit_completion(&adapter->init_done); | |
561 | send_cap_queries(adapter); | |
562 | if (!wait_for_completion_timeout(&adapter->init_done, | |
563 | timeout)) { | |
564 | dev_err(dev, "Capabilities query timeout\n"); | |
565 | return -1; | |
566 | } | |
567 | } | |
568 | ||
569 | reinit_completion(&adapter->init_done); | |
570 | send_login(adapter); | |
571 | if (!wait_for_completion_timeout(&adapter->init_done, | |
572 | timeout)) { | |
573 | dev_err(dev, "Login timeout\n"); | |
574 | return -1; | |
575 | } | |
576 | } while (adapter->renegotiate); | |
577 | ||
a57a5d25 JA |
578 | return 0; |
579 | } | |
580 | ||
1b8955ee NF |
581 | static void release_resources(struct ibmvnic_adapter *adapter) |
582 | { | |
583 | release_bounce_buffer(adapter); | |
584 | release_tx_pools(adapter); | |
585 | release_rx_pools(adapter); | |
586 | ||
587 | release_sub_crqs(adapter); | |
588 | release_crq_queue(adapter); | |
589 | ||
590 | release_stats_token(adapter); | |
591 | } | |
592 | ||
a57a5d25 JA |
593 | static int ibmvnic_open(struct net_device *netdev) |
594 | { | |
595 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
596 | struct device *dev = &adapter->vdev->dev; | |
a57a5d25 | 597 | union ibmvnic_crq crq; |
a57a5d25 | 598 | int rc = 0; |
0ffe2cb7 | 599 | int i; |
a57a5d25 | 600 | |
ea5509f5 JA |
601 | if (adapter->is_closed) { |
602 | rc = ibmvnic_init(adapter); | |
603 | if (rc) | |
604 | return rc; | |
605 | } | |
606 | ||
a57a5d25 JA |
607 | rc = ibmvnic_login(netdev); |
608 | if (rc) | |
609 | return rc; | |
610 | ||
bd0b6723 JA |
611 | rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues); |
612 | if (rc) { | |
613 | dev_err(dev, "failed to set the number of tx queues\n"); | |
614 | return -1; | |
615 | } | |
616 | ||
617 | rc = init_sub_crq_irqs(adapter); | |
618 | if (rc) { | |
619 | dev_err(dev, "failed to initialize sub crq irqs\n"); | |
620 | return -1; | |
621 | } | |
622 | ||
032c5e82 TF |
623 | adapter->map_id = 1; |
624 | adapter->napi = kcalloc(adapter->req_rx_queues, | |
625 | sizeof(struct napi_struct), GFP_KERNEL); | |
626 | if (!adapter->napi) | |
1b8955ee | 627 | goto ibmvnic_open_fail; |
032c5e82 TF |
628 | for (i = 0; i < adapter->req_rx_queues; i++) { |
629 | netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll, | |
630 | NAPI_POLL_WEIGHT); | |
631 | napi_enable(&adapter->napi[i]); | |
632 | } | |
032c5e82 | 633 | |
032c5e82 | 634 | send_map_query(adapter); |
0ffe2cb7 NF |
635 | |
636 | rc = init_rx_pools(netdev); | |
637 | if (rc) | |
1b8955ee | 638 | goto ibmvnic_open_fail; |
032c5e82 | 639 | |
c657e32c NF |
640 | rc = init_tx_pools(netdev); |
641 | if (rc) | |
1b8955ee | 642 | goto ibmvnic_open_fail; |
f0b8c96c NF |
643 | |
644 | rc = init_bounce_buffer(netdev); | |
645 | if (rc) | |
1b8955ee | 646 | goto ibmvnic_open_fail; |
f0b8c96c | 647 | |
032c5e82 TF |
648 | replenish_pools(adapter); |
649 | ||
650 | /* We're ready to receive frames, enable the sub-crq interrupts and | |
651 | * set the logical link state to up | |
652 | */ | |
653 | for (i = 0; i < adapter->req_rx_queues; i++) | |
654 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); | |
655 | ||
656 | for (i = 0; i < adapter->req_tx_queues; i++) | |
657 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); | |
658 | ||
659 | memset(&crq, 0, sizeof(crq)); | |
660 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
661 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
662 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP; | |
663 | ibmvnic_send_crq(adapter, &crq); | |
664 | ||
b8efb894 | 665 | netif_tx_start_all_queues(netdev); |
ea5509f5 | 666 | adapter->is_closed = false; |
b8efb894 | 667 | |
032c5e82 TF |
668 | return 0; |
669 | ||
1b8955ee | 670 | ibmvnic_open_fail: |
032c5e82 | 671 | for (i = 0; i < adapter->req_rx_queues; i++) |
e722af63 | 672 | napi_disable(&adapter->napi[i]); |
1b8955ee | 673 | release_resources(adapter); |
032c5e82 TF |
674 | return -ENOMEM; |
675 | } | |
676 | ||
ea5509f5 JA |
677 | static int ibmvnic_close(struct net_device *netdev) |
678 | { | |
679 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
680 | union ibmvnic_crq crq; | |
681 | int i; | |
682 | ||
683 | adapter->closing = true; | |
684 | ||
685 | for (i = 0; i < adapter->req_rx_queues; i++) | |
686 | napi_disable(&adapter->napi[i]); | |
687 | ||
688 | if (!adapter->failover) | |
689 | netif_tx_stop_all_queues(netdev); | |
032c5e82 | 690 | |
ea5509f5 JA |
691 | memset(&crq, 0, sizeof(crq)); |
692 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
693 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
694 | crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN; | |
695 | ibmvnic_send_crq(adapter, &crq); | |
696 | ||
1b8955ee | 697 | release_resources(adapter); |
ea5509f5 JA |
698 | |
699 | adapter->is_closed = true; | |
700 | adapter->closing = false; | |
032c5e82 TF |
701 | return 0; |
702 | } | |
703 | ||
ad7775dc TF |
704 | /** |
705 | * build_hdr_data - creates L2/L3/L4 header data buffer | |
706 | * @hdr_field - bitfield determining needed headers | |
707 | * @skb - socket buffer | |
708 | * @hdr_len - array of header lengths | |
709 | * @tot_len - total length of data | |
710 | * | |
711 | * Reads hdr_field to determine which headers are needed by firmware. | |
712 | * Builds a buffer containing these headers. Saves individual header | |
713 | * lengths and total buffer length to be used to build descriptors. | |
714 | */ | |
715 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, | |
716 | int *hdr_len, u8 *hdr_data) | |
717 | { | |
718 | int len = 0; | |
719 | u8 *hdr; | |
720 | ||
721 | hdr_len[0] = sizeof(struct ethhdr); | |
722 | ||
723 | if (skb->protocol == htons(ETH_P_IP)) { | |
724 | hdr_len[1] = ip_hdr(skb)->ihl * 4; | |
725 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
726 | hdr_len[2] = tcp_hdrlen(skb); | |
727 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
728 | hdr_len[2] = sizeof(struct udphdr); | |
729 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
730 | hdr_len[1] = sizeof(struct ipv6hdr); | |
731 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
732 | hdr_len[2] = tcp_hdrlen(skb); | |
733 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
734 | hdr_len[2] = sizeof(struct udphdr); | |
735 | } | |
736 | ||
737 | memset(hdr_data, 0, 120); | |
738 | if ((hdr_field >> 6) & 1) { | |
739 | hdr = skb_mac_header(skb); | |
740 | memcpy(hdr_data, hdr, hdr_len[0]); | |
741 | len += hdr_len[0]; | |
742 | } | |
743 | ||
744 | if ((hdr_field >> 5) & 1) { | |
745 | hdr = skb_network_header(skb); | |
746 | memcpy(hdr_data + len, hdr, hdr_len[1]); | |
747 | len += hdr_len[1]; | |
748 | } | |
749 | ||
750 | if ((hdr_field >> 4) & 1) { | |
751 | hdr = skb_transport_header(skb); | |
752 | memcpy(hdr_data + len, hdr, hdr_len[2]); | |
753 | len += hdr_len[2]; | |
754 | } | |
755 | return len; | |
756 | } | |
757 | ||
758 | /** | |
759 | * create_hdr_descs - create header and header extension descriptors | |
760 | * @hdr_field - bitfield determining needed headers | |
761 | * @data - buffer containing header data | |
762 | * @len - length of data buffer | |
763 | * @hdr_len - array of individual header lengths | |
764 | * @scrq_arr - descriptor array | |
765 | * | |
766 | * Creates header and, if needed, header extension descriptors and | |
767 | * places them in a descriptor array, scrq_arr | |
768 | */ | |
769 | ||
770 | static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, | |
771 | union sub_crq *scrq_arr) | |
772 | { | |
773 | union sub_crq hdr_desc; | |
774 | int tmp_len = len; | |
775 | u8 *data, *cur; | |
776 | int tmp; | |
777 | ||
778 | while (tmp_len > 0) { | |
779 | cur = hdr_data + len - tmp_len; | |
780 | ||
781 | memset(&hdr_desc, 0, sizeof(hdr_desc)); | |
782 | if (cur != hdr_data) { | |
783 | data = hdr_desc.hdr_ext.data; | |
784 | tmp = tmp_len > 29 ? 29 : tmp_len; | |
785 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; | |
786 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; | |
787 | hdr_desc.hdr_ext.len = tmp; | |
788 | } else { | |
789 | data = hdr_desc.hdr.data; | |
790 | tmp = tmp_len > 24 ? 24 : tmp_len; | |
791 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; | |
792 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; | |
793 | hdr_desc.hdr.len = tmp; | |
794 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; | |
795 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); | |
796 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; | |
797 | hdr_desc.hdr.flag = hdr_field << 1; | |
798 | } | |
799 | memcpy(data, cur, tmp); | |
800 | tmp_len -= tmp; | |
801 | *scrq_arr = hdr_desc; | |
802 | scrq_arr++; | |
803 | } | |
804 | } | |
805 | ||
806 | /** | |
807 | * build_hdr_descs_arr - build a header descriptor array | |
808 | * @skb - socket buffer | |
809 | * @num_entries - number of descriptors to be sent | |
810 | * @subcrq - first TX descriptor | |
811 | * @hdr_field - bit field determining which headers will be sent | |
812 | * | |
813 | * This function will build a TX descriptor array with applicable | |
814 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. | |
815 | */ | |
816 | ||
817 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, | |
818 | int *num_entries, u8 hdr_field) | |
819 | { | |
820 | int hdr_len[3] = {0, 0, 0}; | |
821 | int tot_len, len; | |
822 | u8 *hdr_data = txbuff->hdr_data; | |
823 | ||
824 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, | |
825 | txbuff->hdr_data); | |
826 | len = tot_len; | |
827 | len -= 24; | |
828 | if (len > 0) | |
829 | num_entries += len % 29 ? len / 29 + 1 : len / 29; | |
830 | create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, | |
831 | txbuff->indir_arr + 1); | |
832 | } | |
833 | ||
032c5e82 TF |
834 | static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
835 | { | |
836 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
837 | int queue_num = skb_get_queue_mapping(skb); | |
ad7775dc | 838 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
032c5e82 TF |
839 | struct device *dev = &adapter->vdev->dev; |
840 | struct ibmvnic_tx_buff *tx_buff = NULL; | |
142c0ac4 | 841 | struct ibmvnic_sub_crq_queue *tx_scrq; |
032c5e82 TF |
842 | struct ibmvnic_tx_pool *tx_pool; |
843 | unsigned int tx_send_failed = 0; | |
844 | unsigned int tx_map_failed = 0; | |
845 | unsigned int tx_dropped = 0; | |
846 | unsigned int tx_packets = 0; | |
847 | unsigned int tx_bytes = 0; | |
848 | dma_addr_t data_dma_addr; | |
849 | struct netdev_queue *txq; | |
850 | bool used_bounce = false; | |
851 | unsigned long lpar_rc; | |
852 | union sub_crq tx_crq; | |
853 | unsigned int offset; | |
ad7775dc | 854 | int num_entries = 1; |
032c5e82 TF |
855 | unsigned char *dst; |
856 | u64 *handle_array; | |
857 | int index = 0; | |
858 | int ret = 0; | |
859 | ||
860 | tx_pool = &adapter->tx_pool[queue_num]; | |
142c0ac4 | 861 | tx_scrq = adapter->tx_scrq[queue_num]; |
032c5e82 TF |
862 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); |
863 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
864 | be32_to_cpu(adapter->login_rsp_buf-> | |
865 | off_txsubm_subcrqs)); | |
866 | if (adapter->migrated) { | |
867 | tx_send_failed++; | |
868 | tx_dropped++; | |
869 | ret = NETDEV_TX_BUSY; | |
870 | goto out; | |
871 | } | |
872 | ||
873 | index = tx_pool->free_map[tx_pool->consumer_index]; | |
874 | offset = index * adapter->req_mtu; | |
875 | dst = tx_pool->long_term_buff.buff + offset; | |
876 | memset(dst, 0, adapter->req_mtu); | |
877 | skb_copy_from_linear_data(skb, dst, skb->len); | |
878 | data_dma_addr = tx_pool->long_term_buff.addr + offset; | |
879 | ||
880 | tx_pool->consumer_index = | |
881 | (tx_pool->consumer_index + 1) % | |
068d9f90 | 882 | adapter->req_tx_entries_per_subcrq; |
032c5e82 TF |
883 | |
884 | tx_buff = &tx_pool->tx_buff[index]; | |
885 | tx_buff->skb = skb; | |
886 | tx_buff->data_dma[0] = data_dma_addr; | |
887 | tx_buff->data_len[0] = skb->len; | |
888 | tx_buff->index = index; | |
889 | tx_buff->pool_index = queue_num; | |
890 | tx_buff->last_frag = true; | |
891 | tx_buff->used_bounce = used_bounce; | |
892 | ||
893 | memset(&tx_crq, 0, sizeof(tx_crq)); | |
894 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; | |
895 | tx_crq.v1.type = IBMVNIC_TX_DESC; | |
896 | tx_crq.v1.n_crq_elem = 1; | |
897 | tx_crq.v1.n_sge = 1; | |
898 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; | |
899 | tx_crq.v1.correlator = cpu_to_be32(index); | |
900 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); | |
901 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); | |
902 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); | |
903 | ||
904 | if (adapter->vlan_header_insertion) { | |
905 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; | |
906 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); | |
907 | } | |
908 | ||
909 | if (skb->protocol == htons(ETH_P_IP)) { | |
910 | if (ip_hdr(skb)->version == 4) | |
911 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; | |
912 | else if (ip_hdr(skb)->version == 6) | |
913 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; | |
914 | ||
915 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
916 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; | |
917 | else if (ip_hdr(skb)->protocol != IPPROTO_TCP) | |
918 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; | |
919 | } | |
920 | ||
ad7775dc | 921 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
032c5e82 | 922 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
ad7775dc TF |
923 | hdrs += 2; |
924 | } | |
925 | /* determine if l2/3/4 headers are sent to firmware */ | |
926 | if ((*hdrs >> 7) & 1 && | |
927 | (skb->protocol == htons(ETH_P_IP) || | |
928 | skb->protocol == htons(ETH_P_IPV6))) { | |
929 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); | |
930 | tx_crq.v1.n_crq_elem = num_entries; | |
931 | tx_buff->indir_arr[0] = tx_crq; | |
932 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, | |
933 | sizeof(tx_buff->indir_arr), | |
934 | DMA_TO_DEVICE); | |
935 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { | |
936 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
937 | dev_err(dev, "tx: unable to map descriptor array\n"); | |
938 | tx_map_failed++; | |
939 | tx_dropped++; | |
940 | ret = NETDEV_TX_BUSY; | |
941 | goto out; | |
942 | } | |
498cd8e4 | 943 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
ad7775dc TF |
944 | (u64)tx_buff->indir_dma, |
945 | (u64)num_entries); | |
946 | } else { | |
498cd8e4 JA |
947 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
948 | &tx_crq); | |
ad7775dc | 949 | } |
032c5e82 TF |
950 | if (lpar_rc != H_SUCCESS) { |
951 | dev_err(dev, "tx failed with code %ld\n", lpar_rc); | |
952 | ||
953 | if (tx_pool->consumer_index == 0) | |
954 | tx_pool->consumer_index = | |
068d9f90 | 955 | adapter->req_tx_entries_per_subcrq - 1; |
032c5e82 TF |
956 | else |
957 | tx_pool->consumer_index--; | |
958 | ||
959 | tx_send_failed++; | |
960 | tx_dropped++; | |
961 | ret = NETDEV_TX_BUSY; | |
962 | goto out; | |
963 | } | |
142c0ac4 TF |
964 | |
965 | atomic_inc(&tx_scrq->used); | |
966 | ||
967 | if (atomic_read(&tx_scrq->used) >= adapter->req_tx_entries_per_subcrq) { | |
968 | netdev_info(netdev, "Stopping queue %d\n", queue_num); | |
969 | netif_stop_subqueue(netdev, queue_num); | |
970 | } | |
971 | ||
032c5e82 TF |
972 | tx_packets++; |
973 | tx_bytes += skb->len; | |
974 | txq->trans_start = jiffies; | |
975 | ret = NETDEV_TX_OK; | |
976 | ||
977 | out: | |
978 | netdev->stats.tx_dropped += tx_dropped; | |
979 | netdev->stats.tx_bytes += tx_bytes; | |
980 | netdev->stats.tx_packets += tx_packets; | |
981 | adapter->tx_send_failed += tx_send_failed; | |
982 | adapter->tx_map_failed += tx_map_failed; | |
983 | ||
984 | return ret; | |
985 | } | |
986 | ||
987 | static void ibmvnic_set_multi(struct net_device *netdev) | |
988 | { | |
989 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
990 | struct netdev_hw_addr *ha; | |
991 | union ibmvnic_crq crq; | |
992 | ||
993 | memset(&crq, 0, sizeof(crq)); | |
994 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
995 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
996 | ||
997 | if (netdev->flags & IFF_PROMISC) { | |
998 | if (!adapter->promisc_supported) | |
999 | return; | |
1000 | } else { | |
1001 | if (netdev->flags & IFF_ALLMULTI) { | |
1002 | /* Accept all multicast */ | |
1003 | memset(&crq, 0, sizeof(crq)); | |
1004 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1005 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1006 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; | |
1007 | ibmvnic_send_crq(adapter, &crq); | |
1008 | } else if (netdev_mc_empty(netdev)) { | |
1009 | /* Reject all multicast */ | |
1010 | memset(&crq, 0, sizeof(crq)); | |
1011 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1012 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1013 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; | |
1014 | ibmvnic_send_crq(adapter, &crq); | |
1015 | } else { | |
1016 | /* Accept one or more multicast(s) */ | |
1017 | netdev_for_each_mc_addr(ha, netdev) { | |
1018 | memset(&crq, 0, sizeof(crq)); | |
1019 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1020 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1021 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; | |
1022 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], | |
1023 | ha->addr); | |
1024 | ibmvnic_send_crq(adapter, &crq); | |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) | |
1031 | { | |
1032 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1033 | struct sockaddr *addr = p; | |
1034 | union ibmvnic_crq crq; | |
1035 | ||
1036 | if (!is_valid_ether_addr(addr->sa_data)) | |
1037 | return -EADDRNOTAVAIL; | |
1038 | ||
1039 | memset(&crq, 0, sizeof(crq)); | |
1040 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; | |
1041 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; | |
1042 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); | |
1043 | ibmvnic_send_crq(adapter, &crq); | |
1044 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ | |
1045 | return 0; | |
1046 | } | |
1047 | ||
032c5e82 TF |
1048 | static void ibmvnic_tx_timeout(struct net_device *dev) |
1049 | { | |
1050 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1051 | int rc; | |
1052 | ||
1053 | /* Adapter timed out, resetting it */ | |
1054 | release_sub_crqs(adapter); | |
1055 | rc = ibmvnic_reset_crq(adapter); | |
1056 | if (rc) | |
1057 | dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n"); | |
1058 | else | |
1059 | ibmvnic_send_crq_init(adapter); | |
1060 | } | |
1061 | ||
1062 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, | |
1063 | struct ibmvnic_rx_buff *rx_buff) | |
1064 | { | |
1065 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; | |
1066 | ||
1067 | rx_buff->skb = NULL; | |
1068 | ||
1069 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); | |
1070 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; | |
1071 | ||
1072 | atomic_dec(&pool->available); | |
1073 | } | |
1074 | ||
1075 | static int ibmvnic_poll(struct napi_struct *napi, int budget) | |
1076 | { | |
1077 | struct net_device *netdev = napi->dev; | |
1078 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1079 | int scrq_num = (int)(napi - adapter->napi); | |
1080 | int frames_processed = 0; | |
1081 | restart_poll: | |
1082 | while (frames_processed < budget) { | |
1083 | struct sk_buff *skb; | |
1084 | struct ibmvnic_rx_buff *rx_buff; | |
1085 | union sub_crq *next; | |
1086 | u32 length; | |
1087 | u16 offset; | |
1088 | u8 flags = 0; | |
1089 | ||
1090 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) | |
1091 | break; | |
1092 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); | |
1093 | rx_buff = | |
1094 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> | |
1095 | rx_comp.correlator); | |
1096 | /* do error checking */ | |
1097 | if (next->rx_comp.rc) { | |
1098 | netdev_err(netdev, "rx error %x\n", next->rx_comp.rc); | |
1099 | /* free the entry */ | |
1100 | next->rx_comp.first = 0; | |
1101 | remove_buff_from_pool(adapter, rx_buff); | |
1102 | break; | |
1103 | } | |
1104 | ||
1105 | length = be32_to_cpu(next->rx_comp.len); | |
1106 | offset = be16_to_cpu(next->rx_comp.off_frame_data); | |
1107 | flags = next->rx_comp.flags; | |
1108 | skb = rx_buff->skb; | |
1109 | skb_copy_to_linear_data(skb, rx_buff->data + offset, | |
1110 | length); | |
1111 | skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci); | |
1112 | /* free the entry */ | |
1113 | next->rx_comp.first = 0; | |
1114 | remove_buff_from_pool(adapter, rx_buff); | |
1115 | ||
1116 | skb_put(skb, length); | |
1117 | skb->protocol = eth_type_trans(skb, netdev); | |
1118 | ||
1119 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && | |
1120 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { | |
1121 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1122 | } | |
1123 | ||
1124 | length = skb->len; | |
1125 | napi_gro_receive(napi, skb); /* send it up */ | |
1126 | netdev->stats.rx_packets++; | |
1127 | netdev->stats.rx_bytes += length; | |
1128 | frames_processed++; | |
1129 | } | |
498cd8e4 | 1130 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); |
032c5e82 TF |
1131 | |
1132 | if (frames_processed < budget) { | |
1133 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
6ad20165 | 1134 | napi_complete_done(napi, frames_processed); |
032c5e82 TF |
1135 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && |
1136 | napi_reschedule(napi)) { | |
1137 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
1138 | goto restart_poll; | |
1139 | } | |
1140 | } | |
1141 | return frames_processed; | |
1142 | } | |
1143 | ||
1144 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1145 | static void ibmvnic_netpoll_controller(struct net_device *dev) | |
1146 | { | |
1147 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1148 | int i; | |
1149 | ||
1150 | replenish_pools(netdev_priv(dev)); | |
1151 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1152 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
1153 | adapter->rx_scrq[i]); | |
1154 | } | |
1155 | #endif | |
1156 | ||
1157 | static const struct net_device_ops ibmvnic_netdev_ops = { | |
1158 | .ndo_open = ibmvnic_open, | |
1159 | .ndo_stop = ibmvnic_close, | |
1160 | .ndo_start_xmit = ibmvnic_xmit, | |
1161 | .ndo_set_rx_mode = ibmvnic_set_multi, | |
1162 | .ndo_set_mac_address = ibmvnic_set_mac, | |
1163 | .ndo_validate_addr = eth_validate_addr, | |
032c5e82 TF |
1164 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
1165 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1166 | .ndo_poll_controller = ibmvnic_netpoll_controller, | |
1167 | #endif | |
1168 | }; | |
1169 | ||
1170 | /* ethtool functions */ | |
1171 | ||
8a43379f PR |
1172 | static int ibmvnic_get_link_ksettings(struct net_device *netdev, |
1173 | struct ethtool_link_ksettings *cmd) | |
032c5e82 | 1174 | { |
8a43379f PR |
1175 | u32 supported, advertising; |
1176 | ||
1177 | supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | | |
032c5e82 | 1178 | SUPPORTED_FIBRE); |
8a43379f | 1179 | advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
032c5e82 | 1180 | ADVERTISED_FIBRE); |
8a43379f PR |
1181 | cmd->base.speed = SPEED_1000; |
1182 | cmd->base.duplex = DUPLEX_FULL; | |
1183 | cmd->base.port = PORT_FIBRE; | |
1184 | cmd->base.phy_address = 0; | |
1185 | cmd->base.autoneg = AUTONEG_ENABLE; | |
1186 | ||
1187 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
1188 | supported); | |
1189 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
1190 | advertising); | |
1191 | ||
032c5e82 TF |
1192 | return 0; |
1193 | } | |
1194 | ||
1195 | static void ibmvnic_get_drvinfo(struct net_device *dev, | |
1196 | struct ethtool_drvinfo *info) | |
1197 | { | |
1198 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); | |
1199 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); | |
1200 | } | |
1201 | ||
1202 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) | |
1203 | { | |
1204 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1205 | ||
1206 | return adapter->msg_enable; | |
1207 | } | |
1208 | ||
1209 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) | |
1210 | { | |
1211 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1212 | ||
1213 | adapter->msg_enable = data; | |
1214 | } | |
1215 | ||
1216 | static u32 ibmvnic_get_link(struct net_device *netdev) | |
1217 | { | |
1218 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1219 | ||
1220 | /* Don't need to send a query because we request a logical link up at | |
1221 | * init and then we wait for link state indications | |
1222 | */ | |
1223 | return adapter->logical_link_state; | |
1224 | } | |
1225 | ||
1226 | static void ibmvnic_get_ringparam(struct net_device *netdev, | |
1227 | struct ethtool_ringparam *ring) | |
1228 | { | |
1229 | ring->rx_max_pending = 0; | |
1230 | ring->tx_max_pending = 0; | |
1231 | ring->rx_mini_max_pending = 0; | |
1232 | ring->rx_jumbo_max_pending = 0; | |
1233 | ring->rx_pending = 0; | |
1234 | ring->tx_pending = 0; | |
1235 | ring->rx_mini_pending = 0; | |
1236 | ring->rx_jumbo_pending = 0; | |
1237 | } | |
1238 | ||
1239 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
1240 | { | |
1241 | int i; | |
1242 | ||
1243 | if (stringset != ETH_SS_STATS) | |
1244 | return; | |
1245 | ||
1246 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN) | |
1247 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); | |
1248 | } | |
1249 | ||
1250 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) | |
1251 | { | |
1252 | switch (sset) { | |
1253 | case ETH_SS_STATS: | |
1254 | return ARRAY_SIZE(ibmvnic_stats); | |
1255 | default: | |
1256 | return -EOPNOTSUPP; | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, | |
1261 | struct ethtool_stats *stats, u64 *data) | |
1262 | { | |
1263 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1264 | union ibmvnic_crq crq; | |
1265 | int i; | |
1266 | ||
1267 | memset(&crq, 0, sizeof(crq)); | |
1268 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; | |
1269 | crq.request_statistics.cmd = REQUEST_STATISTICS; | |
1270 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); | |
1271 | crq.request_statistics.len = | |
1272 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); | |
032c5e82 TF |
1273 | |
1274 | /* Wait for data to be written */ | |
1275 | init_completion(&adapter->stats_done); | |
db5d0b59 | 1276 | ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
1277 | wait_for_completion(&adapter->stats_done); |
1278 | ||
1279 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) | |
1280 | data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset); | |
1281 | } | |
1282 | ||
1283 | static const struct ethtool_ops ibmvnic_ethtool_ops = { | |
032c5e82 TF |
1284 | .get_drvinfo = ibmvnic_get_drvinfo, |
1285 | .get_msglevel = ibmvnic_get_msglevel, | |
1286 | .set_msglevel = ibmvnic_set_msglevel, | |
1287 | .get_link = ibmvnic_get_link, | |
1288 | .get_ringparam = ibmvnic_get_ringparam, | |
1289 | .get_strings = ibmvnic_get_strings, | |
1290 | .get_sset_count = ibmvnic_get_sset_count, | |
1291 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, | |
8a43379f | 1292 | .get_link_ksettings = ibmvnic_get_link_ksettings, |
032c5e82 TF |
1293 | }; |
1294 | ||
1295 | /* Routines for managing CRQs/sCRQs */ | |
1296 | ||
1297 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, | |
1298 | struct ibmvnic_sub_crq_queue *scrq) | |
1299 | { | |
1300 | struct device *dev = &adapter->vdev->dev; | |
1301 | long rc; | |
1302 | ||
1303 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); | |
1304 | ||
1305 | /* Close the sub-crqs */ | |
1306 | do { | |
1307 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, | |
1308 | adapter->vdev->unit_address, | |
1309 | scrq->crq_num); | |
1310 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
1311 | ||
ffa73855 TF |
1312 | if (rc) { |
1313 | netdev_err(adapter->netdev, | |
1314 | "Failed to release sub-CRQ %16lx, rc = %ld\n", | |
1315 | scrq->crq_num, rc); | |
1316 | } | |
1317 | ||
032c5e82 TF |
1318 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, |
1319 | DMA_BIDIRECTIONAL); | |
1320 | free_pages((unsigned long)scrq->msgs, 2); | |
1321 | kfree(scrq); | |
1322 | } | |
1323 | ||
1324 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter | |
1325 | *adapter) | |
1326 | { | |
1327 | struct device *dev = &adapter->vdev->dev; | |
1328 | struct ibmvnic_sub_crq_queue *scrq; | |
1329 | int rc; | |
1330 | ||
1331 | scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC); | |
1332 | if (!scrq) | |
1333 | return NULL; | |
1334 | ||
12608c26 | 1335 | scrq->msgs = (union sub_crq *)__get_free_pages(GFP_ATOMIC, 2); |
032c5e82 TF |
1336 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); |
1337 | if (!scrq->msgs) { | |
1338 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); | |
1339 | goto zero_page_failed; | |
1340 | } | |
1341 | ||
1342 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, | |
1343 | DMA_BIDIRECTIONAL); | |
1344 | if (dma_mapping_error(dev, scrq->msg_token)) { | |
1345 | dev_warn(dev, "Couldn't map crq queue messages page\n"); | |
1346 | goto map_failed; | |
1347 | } | |
1348 | ||
1349 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
1350 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
1351 | ||
1352 | if (rc == H_RESOURCE) | |
1353 | rc = ibmvnic_reset_crq(adapter); | |
1354 | ||
1355 | if (rc == H_CLOSED) { | |
1356 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); | |
1357 | } else if (rc) { | |
1358 | dev_warn(dev, "Error %d registering sub-crq\n", rc); | |
1359 | goto reg_failed; | |
1360 | } | |
1361 | ||
032c5e82 TF |
1362 | scrq->adapter = adapter; |
1363 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); | |
1364 | scrq->cur = 0; | |
142c0ac4 | 1365 | atomic_set(&scrq->used, 0); |
032c5e82 TF |
1366 | scrq->rx_skb_top = NULL; |
1367 | spin_lock_init(&scrq->lock); | |
1368 | ||
1369 | netdev_dbg(adapter->netdev, | |
1370 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", | |
1371 | scrq->crq_num, scrq->hw_irq, scrq->irq); | |
1372 | ||
1373 | return scrq; | |
1374 | ||
032c5e82 TF |
1375 | reg_failed: |
1376 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
1377 | DMA_BIDIRECTIONAL); | |
1378 | map_failed: | |
1379 | free_pages((unsigned long)scrq->msgs, 2); | |
1380 | zero_page_failed: | |
1381 | kfree(scrq); | |
1382 | ||
1383 | return NULL; | |
1384 | } | |
1385 | ||
1386 | static void release_sub_crqs(struct ibmvnic_adapter *adapter) | |
1387 | { | |
1388 | int i; | |
1389 | ||
1390 | if (adapter->tx_scrq) { | |
b510888f NF |
1391 | for (i = 0; i < adapter->req_tx_queues; i++) { |
1392 | if (!adapter->tx_scrq[i]) | |
1393 | continue; | |
1394 | ||
1395 | if (adapter->tx_scrq[i]->irq) { | |
032c5e82 TF |
1396 | free_irq(adapter->tx_scrq[i]->irq, |
1397 | adapter->tx_scrq[i]); | |
88eb98a0 | 1398 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
b510888f | 1399 | adapter->tx_scrq[i]->irq = 0; |
032c5e82 | 1400 | } |
b510888f NF |
1401 | |
1402 | release_sub_crq_queue(adapter, adapter->tx_scrq[i]); | |
1403 | } | |
1404 | ||
9501df3c | 1405 | kfree(adapter->tx_scrq); |
032c5e82 TF |
1406 | adapter->tx_scrq = NULL; |
1407 | } | |
1408 | ||
1409 | if (adapter->rx_scrq) { | |
b510888f NF |
1410 | for (i = 0; i < adapter->req_rx_queues; i++) { |
1411 | if (!adapter->rx_scrq[i]) | |
1412 | continue; | |
1413 | ||
1414 | if (adapter->rx_scrq[i]->irq) { | |
032c5e82 TF |
1415 | free_irq(adapter->rx_scrq[i]->irq, |
1416 | adapter->rx_scrq[i]); | |
88eb98a0 | 1417 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
b510888f | 1418 | adapter->rx_scrq[i]->irq = 0; |
032c5e82 | 1419 | } |
032c5e82 | 1420 | |
b510888f NF |
1421 | release_sub_crq_queue(adapter, adapter->rx_scrq[i]); |
1422 | } | |
ea22d51a | 1423 | |
b510888f | 1424 | kfree(adapter->rx_scrq); |
ea22d51a TF |
1425 | adapter->rx_scrq = NULL; |
1426 | } | |
ea22d51a TF |
1427 | } |
1428 | ||
032c5e82 TF |
1429 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
1430 | struct ibmvnic_sub_crq_queue *scrq) | |
1431 | { | |
1432 | struct device *dev = &adapter->vdev->dev; | |
1433 | unsigned long rc; | |
1434 | ||
1435 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1436 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1437 | if (rc) | |
1438 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", | |
1439 | scrq->hw_irq, rc); | |
1440 | return rc; | |
1441 | } | |
1442 | ||
1443 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, | |
1444 | struct ibmvnic_sub_crq_queue *scrq) | |
1445 | { | |
1446 | struct device *dev = &adapter->vdev->dev; | |
1447 | unsigned long rc; | |
1448 | ||
1449 | if (scrq->hw_irq > 0x100000000ULL) { | |
1450 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); | |
1451 | return 1; | |
1452 | } | |
1453 | ||
1454 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1455 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1456 | if (rc) | |
1457 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", | |
1458 | scrq->hw_irq, rc); | |
1459 | return rc; | |
1460 | } | |
1461 | ||
1462 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, | |
1463 | struct ibmvnic_sub_crq_queue *scrq) | |
1464 | { | |
1465 | struct device *dev = &adapter->vdev->dev; | |
1466 | struct ibmvnic_tx_buff *txbuff; | |
1467 | union sub_crq *next; | |
1468 | int index; | |
1469 | int i, j; | |
ad7775dc | 1470 | u8 first; |
032c5e82 TF |
1471 | |
1472 | restart_loop: | |
1473 | while (pending_scrq(adapter, scrq)) { | |
1474 | unsigned int pool = scrq->pool_index; | |
1475 | ||
1476 | next = ibmvnic_next_scrq(adapter, scrq); | |
1477 | for (i = 0; i < next->tx_comp.num_comps; i++) { | |
1478 | if (next->tx_comp.rcs[i]) { | |
1479 | dev_err(dev, "tx error %x\n", | |
1480 | next->tx_comp.rcs[i]); | |
1481 | continue; | |
1482 | } | |
1483 | index = be32_to_cpu(next->tx_comp.correlators[i]); | |
1484 | txbuff = &adapter->tx_pool[pool].tx_buff[index]; | |
1485 | ||
1486 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { | |
1487 | if (!txbuff->data_dma[j]) | |
1488 | continue; | |
1489 | ||
1490 | txbuff->data_dma[j] = 0; | |
1491 | txbuff->used_bounce = false; | |
1492 | } | |
ad7775dc TF |
1493 | /* if sub_crq was sent indirectly */ |
1494 | first = txbuff->indir_arr[0].generic.first; | |
1495 | if (first == IBMVNIC_CRQ_CMD) { | |
1496 | dma_unmap_single(dev, txbuff->indir_dma, | |
1497 | sizeof(txbuff->indir_arr), | |
1498 | DMA_TO_DEVICE); | |
1499 | } | |
032c5e82 | 1500 | |
142c0ac4 TF |
1501 | if (txbuff->last_frag) { |
1502 | atomic_dec(&scrq->used); | |
1503 | ||
1504 | if (atomic_read(&scrq->used) <= | |
1505 | (adapter->req_tx_entries_per_subcrq / 2) && | |
1506 | netif_subqueue_stopped(adapter->netdev, | |
1507 | txbuff->skb)) { | |
1508 | netif_wake_subqueue(adapter->netdev, | |
1509 | scrq->pool_index); | |
1510 | netdev_dbg(adapter->netdev, | |
1511 | "Started queue %d\n", | |
1512 | scrq->pool_index); | |
1513 | } | |
1514 | ||
032c5e82 | 1515 | dev_kfree_skb_any(txbuff->skb); |
142c0ac4 | 1516 | } |
032c5e82 TF |
1517 | |
1518 | adapter->tx_pool[pool].free_map[adapter->tx_pool[pool]. | |
1519 | producer_index] = index; | |
1520 | adapter->tx_pool[pool].producer_index = | |
1521 | (adapter->tx_pool[pool].producer_index + 1) % | |
068d9f90 | 1522 | adapter->req_tx_entries_per_subcrq; |
032c5e82 TF |
1523 | } |
1524 | /* remove tx_comp scrq*/ | |
1525 | next->tx_comp.first = 0; | |
1526 | } | |
1527 | ||
1528 | enable_scrq_irq(adapter, scrq); | |
1529 | ||
1530 | if (pending_scrq(adapter, scrq)) { | |
1531 | disable_scrq_irq(adapter, scrq); | |
1532 | goto restart_loop; | |
1533 | } | |
1534 | ||
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) | |
1539 | { | |
1540 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
1541 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
1542 | ||
1543 | disable_scrq_irq(adapter, scrq); | |
1544 | ibmvnic_complete_tx(adapter, scrq); | |
1545 | ||
1546 | return IRQ_HANDLED; | |
1547 | } | |
1548 | ||
1549 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) | |
1550 | { | |
1551 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
1552 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
1553 | ||
1554 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { | |
1555 | disable_scrq_irq(adapter, scrq); | |
1556 | __napi_schedule(&adapter->napi[scrq->scrq_num]); | |
1557 | } | |
1558 | ||
1559 | return IRQ_HANDLED; | |
1560 | } | |
1561 | ||
ea22d51a TF |
1562 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
1563 | { | |
1564 | struct device *dev = &adapter->vdev->dev; | |
1565 | struct ibmvnic_sub_crq_queue *scrq; | |
1566 | int i = 0, j = 0; | |
1567 | int rc = 0; | |
1568 | ||
1569 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1570 | scrq = adapter->tx_scrq[i]; | |
1571 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
1572 | ||
99c1790e | 1573 | if (!scrq->irq) { |
ea22d51a TF |
1574 | rc = -EINVAL; |
1575 | dev_err(dev, "Error mapping irq\n"); | |
1576 | goto req_tx_irq_failed; | |
1577 | } | |
1578 | ||
1579 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, | |
1580 | 0, "ibmvnic_tx", scrq); | |
1581 | ||
1582 | if (rc) { | |
1583 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", | |
1584 | scrq->irq, rc); | |
1585 | irq_dispose_mapping(scrq->irq); | |
1586 | goto req_rx_irq_failed; | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1591 | scrq = adapter->rx_scrq[i]; | |
1592 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
99c1790e | 1593 | if (!scrq->irq) { |
ea22d51a TF |
1594 | rc = -EINVAL; |
1595 | dev_err(dev, "Error mapping irq\n"); | |
1596 | goto req_rx_irq_failed; | |
1597 | } | |
1598 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, | |
1599 | 0, "ibmvnic_rx", scrq); | |
1600 | if (rc) { | |
1601 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", | |
1602 | scrq->irq, rc); | |
1603 | irq_dispose_mapping(scrq->irq); | |
1604 | goto req_rx_irq_failed; | |
1605 | } | |
1606 | } | |
1607 | return rc; | |
1608 | ||
1609 | req_rx_irq_failed: | |
8bf371e6 | 1610 | for (j = 0; j < i; j++) { |
ea22d51a TF |
1611 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); |
1612 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 1613 | } |
ea22d51a TF |
1614 | i = adapter->req_tx_queues; |
1615 | req_tx_irq_failed: | |
8bf371e6 | 1616 | for (j = 0; j < i; j++) { |
ea22d51a TF |
1617 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); |
1618 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 1619 | } |
b510888f | 1620 | release_sub_crqs(adapter); |
ea22d51a TF |
1621 | return rc; |
1622 | } | |
1623 | ||
032c5e82 TF |
1624 | static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry) |
1625 | { | |
1626 | struct device *dev = &adapter->vdev->dev; | |
1627 | struct ibmvnic_sub_crq_queue **allqueues; | |
1628 | int registered_queues = 0; | |
1629 | union ibmvnic_crq crq; | |
1630 | int total_queues; | |
1631 | int more = 0; | |
ea22d51a | 1632 | int i; |
032c5e82 TF |
1633 | |
1634 | if (!retry) { | |
1635 | /* Sub-CRQ entries are 32 byte long */ | |
1636 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); | |
1637 | ||
1638 | if (adapter->min_tx_entries_per_subcrq > entries_page || | |
1639 | adapter->min_rx_add_entries_per_subcrq > entries_page) { | |
1640 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); | |
1641 | goto allqueues_failed; | |
1642 | } | |
1643 | ||
1644 | /* Get the minimum between the queried max and the entries | |
1645 | * that fit in our PAGE_SIZE | |
1646 | */ | |
1647 | adapter->req_tx_entries_per_subcrq = | |
1648 | adapter->max_tx_entries_per_subcrq > entries_page ? | |
1649 | entries_page : adapter->max_tx_entries_per_subcrq; | |
1650 | adapter->req_rx_add_entries_per_subcrq = | |
1651 | adapter->max_rx_add_entries_per_subcrq > entries_page ? | |
1652 | entries_page : adapter->max_rx_add_entries_per_subcrq; | |
1653 | ||
6dbcd8fb JA |
1654 | adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues; |
1655 | adapter->req_rx_queues = adapter->opt_rx_comp_queues; | |
498cd8e4 | 1656 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; |
032c5e82 | 1657 | |
f39f0d1e | 1658 | adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; |
032c5e82 TF |
1659 | } |
1660 | ||
1661 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; | |
1662 | ||
1663 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC); | |
1664 | if (!allqueues) | |
1665 | goto allqueues_failed; | |
1666 | ||
1667 | for (i = 0; i < total_queues; i++) { | |
1668 | allqueues[i] = init_sub_crq_queue(adapter); | |
1669 | if (!allqueues[i]) { | |
1670 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); | |
1671 | break; | |
1672 | } | |
1673 | registered_queues++; | |
1674 | } | |
1675 | ||
1676 | /* Make sure we were able to register the minimum number of queues */ | |
1677 | if (registered_queues < | |
1678 | adapter->min_tx_queues + adapter->min_rx_queues) { | |
1679 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); | |
1680 | goto tx_failed; | |
1681 | } | |
1682 | ||
1683 | /* Distribute the failed allocated queues*/ | |
1684 | for (i = 0; i < total_queues - registered_queues + more ; i++) { | |
1685 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); | |
1686 | switch (i % 3) { | |
1687 | case 0: | |
1688 | if (adapter->req_rx_queues > adapter->min_rx_queues) | |
1689 | adapter->req_rx_queues--; | |
1690 | else | |
1691 | more++; | |
1692 | break; | |
1693 | case 1: | |
1694 | if (adapter->req_tx_queues > adapter->min_tx_queues) | |
1695 | adapter->req_tx_queues--; | |
1696 | else | |
1697 | more++; | |
1698 | break; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, | |
1703 | sizeof(*adapter->tx_scrq), GFP_ATOMIC); | |
1704 | if (!adapter->tx_scrq) | |
1705 | goto tx_failed; | |
1706 | ||
1707 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1708 | adapter->tx_scrq[i] = allqueues[i]; | |
1709 | adapter->tx_scrq[i]->pool_index = i; | |
032c5e82 TF |
1710 | } |
1711 | ||
1712 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, | |
1713 | sizeof(*adapter->rx_scrq), GFP_ATOMIC); | |
1714 | if (!adapter->rx_scrq) | |
1715 | goto rx_failed; | |
1716 | ||
1717 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1718 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; | |
1719 | adapter->rx_scrq[i]->scrq_num = i; | |
032c5e82 TF |
1720 | } |
1721 | ||
1722 | memset(&crq, 0, sizeof(crq)); | |
1723 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
1724 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
1725 | ||
1726 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); | |
de89e854 | 1727 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
901e040a | 1728 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1729 | ibmvnic_send_crq(adapter, &crq); |
1730 | ||
1731 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); | |
de89e854 | 1732 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
901e040a | 1733 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1734 | ibmvnic_send_crq(adapter, &crq); |
1735 | ||
1736 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); | |
de89e854 | 1737 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
901e040a | 1738 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1739 | ibmvnic_send_crq(adapter, &crq); |
1740 | ||
1741 | crq.request_capability.capability = | |
1742 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); | |
1743 | crq.request_capability.number = | |
de89e854 | 1744 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
901e040a | 1745 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1746 | ibmvnic_send_crq(adapter, &crq); |
1747 | ||
1748 | crq.request_capability.capability = | |
1749 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); | |
1750 | crq.request_capability.number = | |
de89e854 | 1751 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
901e040a | 1752 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1753 | ibmvnic_send_crq(adapter, &crq); |
1754 | ||
1755 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); | |
de89e854 | 1756 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
901e040a | 1757 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1758 | ibmvnic_send_crq(adapter, &crq); |
1759 | ||
1760 | if (adapter->netdev->flags & IFF_PROMISC) { | |
1761 | if (adapter->promisc_supported) { | |
1762 | crq.request_capability.capability = | |
1763 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 1764 | crq.request_capability.number = cpu_to_be64(1); |
901e040a | 1765 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1766 | ibmvnic_send_crq(adapter, &crq); |
1767 | } | |
1768 | } else { | |
1769 | crq.request_capability.capability = | |
1770 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 1771 | crq.request_capability.number = cpu_to_be64(0); |
901e040a | 1772 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
1773 | ibmvnic_send_crq(adapter, &crq); |
1774 | } | |
1775 | ||
1776 | kfree(allqueues); | |
1777 | ||
1778 | return; | |
1779 | ||
032c5e82 TF |
1780 | rx_failed: |
1781 | kfree(adapter->tx_scrq); | |
1782 | adapter->tx_scrq = NULL; | |
1783 | tx_failed: | |
1784 | for (i = 0; i < registered_queues; i++) | |
1785 | release_sub_crq_queue(adapter, allqueues[i]); | |
1786 | kfree(allqueues); | |
1787 | allqueues_failed: | |
1788 | ibmvnic_remove(adapter->vdev); | |
1789 | } | |
1790 | ||
1791 | static int pending_scrq(struct ibmvnic_adapter *adapter, | |
1792 | struct ibmvnic_sub_crq_queue *scrq) | |
1793 | { | |
1794 | union sub_crq *entry = &scrq->msgs[scrq->cur]; | |
1795 | ||
1796 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing) | |
1797 | return 1; | |
1798 | else | |
1799 | return 0; | |
1800 | } | |
1801 | ||
1802 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, | |
1803 | struct ibmvnic_sub_crq_queue *scrq) | |
1804 | { | |
1805 | union sub_crq *entry; | |
1806 | unsigned long flags; | |
1807 | ||
1808 | spin_lock_irqsave(&scrq->lock, flags); | |
1809 | entry = &scrq->msgs[scrq->cur]; | |
1810 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
1811 | if (++scrq->cur == scrq->size) | |
1812 | scrq->cur = 0; | |
1813 | } else { | |
1814 | entry = NULL; | |
1815 | } | |
1816 | spin_unlock_irqrestore(&scrq->lock, flags); | |
1817 | ||
1818 | return entry; | |
1819 | } | |
1820 | ||
1821 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) | |
1822 | { | |
1823 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
1824 | union ibmvnic_crq *crq; | |
1825 | ||
1826 | crq = &queue->msgs[queue->cur]; | |
1827 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
1828 | if (++queue->cur == queue->size) | |
1829 | queue->cur = 0; | |
1830 | } else { | |
1831 | crq = NULL; | |
1832 | } | |
1833 | ||
1834 | return crq; | |
1835 | } | |
1836 | ||
1837 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
1838 | union sub_crq *sub_crq) | |
1839 | { | |
1840 | unsigned int ua = adapter->vdev->unit_address; | |
1841 | struct device *dev = &adapter->vdev->dev; | |
1842 | u64 *u64_crq = (u64 *)sub_crq; | |
1843 | int rc; | |
1844 | ||
1845 | netdev_dbg(adapter->netdev, | |
1846 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", | |
1847 | (unsigned long int)cpu_to_be64(remote_handle), | |
1848 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
1849 | (unsigned long int)cpu_to_be64(u64_crq[1]), | |
1850 | (unsigned long int)cpu_to_be64(u64_crq[2]), | |
1851 | (unsigned long int)cpu_to_be64(u64_crq[3])); | |
1852 | ||
1853 | /* Make sure the hypervisor sees the complete request */ | |
1854 | mb(); | |
1855 | ||
1856 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, | |
1857 | cpu_to_be64(remote_handle), | |
1858 | cpu_to_be64(u64_crq[0]), | |
1859 | cpu_to_be64(u64_crq[1]), | |
1860 | cpu_to_be64(u64_crq[2]), | |
1861 | cpu_to_be64(u64_crq[3])); | |
1862 | ||
1863 | if (rc) { | |
1864 | if (rc == H_CLOSED) | |
1865 | dev_warn(dev, "CRQ Queue closed\n"); | |
1866 | dev_err(dev, "Send error (rc=%d)\n", rc); | |
1867 | } | |
1868 | ||
1869 | return rc; | |
1870 | } | |
1871 | ||
ad7775dc TF |
1872 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
1873 | u64 remote_handle, u64 ioba, u64 num_entries) | |
1874 | { | |
1875 | unsigned int ua = adapter->vdev->unit_address; | |
1876 | struct device *dev = &adapter->vdev->dev; | |
1877 | int rc; | |
1878 | ||
1879 | /* Make sure the hypervisor sees the complete request */ | |
1880 | mb(); | |
1881 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, | |
1882 | cpu_to_be64(remote_handle), | |
1883 | ioba, num_entries); | |
1884 | ||
1885 | if (rc) { | |
1886 | if (rc == H_CLOSED) | |
1887 | dev_warn(dev, "CRQ Queue closed\n"); | |
1888 | dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); | |
1889 | } | |
1890 | ||
1891 | return rc; | |
1892 | } | |
1893 | ||
032c5e82 TF |
1894 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
1895 | union ibmvnic_crq *crq) | |
1896 | { | |
1897 | unsigned int ua = adapter->vdev->unit_address; | |
1898 | struct device *dev = &adapter->vdev->dev; | |
1899 | u64 *u64_crq = (u64 *)crq; | |
1900 | int rc; | |
1901 | ||
1902 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", | |
1903 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
1904 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
1905 | ||
1906 | /* Make sure the hypervisor sees the complete request */ | |
1907 | mb(); | |
1908 | ||
1909 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, | |
1910 | cpu_to_be64(u64_crq[0]), | |
1911 | cpu_to_be64(u64_crq[1])); | |
1912 | ||
1913 | if (rc) { | |
1914 | if (rc == H_CLOSED) | |
1915 | dev_warn(dev, "CRQ Queue closed\n"); | |
1916 | dev_warn(dev, "Send error (rc=%d)\n", rc); | |
1917 | } | |
1918 | ||
1919 | return rc; | |
1920 | } | |
1921 | ||
1922 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) | |
1923 | { | |
1924 | union ibmvnic_crq crq; | |
1925 | ||
1926 | memset(&crq, 0, sizeof(crq)); | |
1927 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
1928 | crq.generic.cmd = IBMVNIC_CRQ_INIT; | |
1929 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); | |
1930 | ||
1931 | return ibmvnic_send_crq(adapter, &crq); | |
1932 | } | |
1933 | ||
1934 | static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter) | |
1935 | { | |
1936 | union ibmvnic_crq crq; | |
1937 | ||
1938 | memset(&crq, 0, sizeof(crq)); | |
1939 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
1940 | crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE; | |
1941 | netdev_dbg(adapter->netdev, "Sending CRQ init complete\n"); | |
1942 | ||
1943 | return ibmvnic_send_crq(adapter, &crq); | |
1944 | } | |
1945 | ||
1946 | static int send_version_xchg(struct ibmvnic_adapter *adapter) | |
1947 | { | |
1948 | union ibmvnic_crq crq; | |
1949 | ||
1950 | memset(&crq, 0, sizeof(crq)); | |
1951 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; | |
1952 | crq.version_exchange.cmd = VERSION_EXCHANGE; | |
1953 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); | |
1954 | ||
1955 | return ibmvnic_send_crq(adapter, &crq); | |
1956 | } | |
1957 | ||
1958 | static void send_login(struct ibmvnic_adapter *adapter) | |
1959 | { | |
1960 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; | |
1961 | struct ibmvnic_login_buffer *login_buffer; | |
1962 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
1963 | struct device *dev = &adapter->vdev->dev; | |
1964 | dma_addr_t rsp_buffer_token; | |
1965 | dma_addr_t buffer_token; | |
1966 | size_t rsp_buffer_size; | |
1967 | union ibmvnic_crq crq; | |
1968 | unsigned long flags; | |
1969 | size_t buffer_size; | |
1970 | __be64 *tx_list_p; | |
1971 | __be64 *rx_list_p; | |
1972 | int i; | |
1973 | ||
1974 | buffer_size = | |
1975 | sizeof(struct ibmvnic_login_buffer) + | |
1976 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues); | |
1977 | ||
1978 | login_buffer = kmalloc(buffer_size, GFP_ATOMIC); | |
1979 | if (!login_buffer) | |
1980 | goto buf_alloc_failed; | |
1981 | ||
1982 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, | |
1983 | DMA_TO_DEVICE); | |
1984 | if (dma_mapping_error(dev, buffer_token)) { | |
1985 | dev_err(dev, "Couldn't map login buffer\n"); | |
1986 | goto buf_map_failed; | |
1987 | } | |
1988 | ||
498cd8e4 JA |
1989 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
1990 | sizeof(u64) * adapter->req_tx_queues + | |
1991 | sizeof(u64) * adapter->req_rx_queues + | |
1992 | sizeof(u64) * adapter->req_rx_queues + | |
1993 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; | |
032c5e82 TF |
1994 | |
1995 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); | |
1996 | if (!login_rsp_buffer) | |
1997 | goto buf_rsp_alloc_failed; | |
1998 | ||
1999 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, | |
2000 | rsp_buffer_size, DMA_FROM_DEVICE); | |
2001 | if (dma_mapping_error(dev, rsp_buffer_token)) { | |
2002 | dev_err(dev, "Couldn't map login rsp buffer\n"); | |
2003 | goto buf_rsp_map_failed; | |
2004 | } | |
2005 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
2006 | if (!inflight_cmd) { | |
2007 | dev_err(dev, "Couldn't allocate inflight_cmd\n"); | |
2008 | goto inflight_alloc_failed; | |
2009 | } | |
2010 | adapter->login_buf = login_buffer; | |
2011 | adapter->login_buf_token = buffer_token; | |
2012 | adapter->login_buf_sz = buffer_size; | |
2013 | adapter->login_rsp_buf = login_rsp_buffer; | |
2014 | adapter->login_rsp_buf_token = rsp_buffer_token; | |
2015 | adapter->login_rsp_buf_sz = rsp_buffer_size; | |
2016 | ||
2017 | login_buffer->len = cpu_to_be32(buffer_size); | |
2018 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); | |
2019 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); | |
2020 | login_buffer->off_txcomp_subcrqs = | |
2021 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); | |
2022 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); | |
2023 | login_buffer->off_rxcomp_subcrqs = | |
2024 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + | |
2025 | sizeof(u64) * adapter->req_tx_queues); | |
2026 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); | |
2027 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); | |
2028 | ||
2029 | tx_list_p = (__be64 *)((char *)login_buffer + | |
2030 | sizeof(struct ibmvnic_login_buffer)); | |
2031 | rx_list_p = (__be64 *)((char *)login_buffer + | |
2032 | sizeof(struct ibmvnic_login_buffer) + | |
2033 | sizeof(u64) * adapter->req_tx_queues); | |
2034 | ||
2035 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
2036 | if (adapter->tx_scrq[i]) { | |
2037 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> | |
2038 | crq_num); | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
2043 | if (adapter->rx_scrq[i]) { | |
2044 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> | |
2045 | crq_num); | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); | |
2050 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { | |
2051 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2052 | ((unsigned long int *)(adapter->login_buf))[i]); | |
2053 | } | |
2054 | ||
2055 | memset(&crq, 0, sizeof(crq)); | |
2056 | crq.login.first = IBMVNIC_CRQ_CMD; | |
2057 | crq.login.cmd = LOGIN; | |
2058 | crq.login.ioba = cpu_to_be32(buffer_token); | |
2059 | crq.login.len = cpu_to_be32(buffer_size); | |
2060 | ||
2061 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); | |
2062 | ||
2063 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
2064 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
2065 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2066 | ||
2067 | ibmvnic_send_crq(adapter, &crq); | |
2068 | ||
2069 | return; | |
2070 | ||
2071 | inflight_alloc_failed: | |
2072 | dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, | |
2073 | DMA_FROM_DEVICE); | |
2074 | buf_rsp_map_failed: | |
2075 | kfree(login_rsp_buffer); | |
2076 | buf_rsp_alloc_failed: | |
2077 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); | |
2078 | buf_map_failed: | |
2079 | kfree(login_buffer); | |
2080 | buf_alloc_failed: | |
2081 | return; | |
2082 | } | |
2083 | ||
2084 | static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, | |
2085 | u32 len, u8 map_id) | |
2086 | { | |
2087 | union ibmvnic_crq crq; | |
2088 | ||
2089 | memset(&crq, 0, sizeof(crq)); | |
2090 | crq.request_map.first = IBMVNIC_CRQ_CMD; | |
2091 | crq.request_map.cmd = REQUEST_MAP; | |
2092 | crq.request_map.map_id = map_id; | |
2093 | crq.request_map.ioba = cpu_to_be32(addr); | |
2094 | crq.request_map.len = cpu_to_be32(len); | |
2095 | ibmvnic_send_crq(adapter, &crq); | |
2096 | } | |
2097 | ||
2098 | static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) | |
2099 | { | |
2100 | union ibmvnic_crq crq; | |
2101 | ||
2102 | memset(&crq, 0, sizeof(crq)); | |
2103 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; | |
2104 | crq.request_unmap.cmd = REQUEST_UNMAP; | |
2105 | crq.request_unmap.map_id = map_id; | |
2106 | ibmvnic_send_crq(adapter, &crq); | |
2107 | } | |
2108 | ||
2109 | static void send_map_query(struct ibmvnic_adapter *adapter) | |
2110 | { | |
2111 | union ibmvnic_crq crq; | |
2112 | ||
2113 | memset(&crq, 0, sizeof(crq)); | |
2114 | crq.query_map.first = IBMVNIC_CRQ_CMD; | |
2115 | crq.query_map.cmd = QUERY_MAP; | |
2116 | ibmvnic_send_crq(adapter, &crq); | |
2117 | } | |
2118 | ||
2119 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ | |
2120 | static void send_cap_queries(struct ibmvnic_adapter *adapter) | |
2121 | { | |
2122 | union ibmvnic_crq crq; | |
2123 | ||
901e040a | 2124 | atomic_set(&adapter->running_cap_crqs, 0); |
032c5e82 TF |
2125 | memset(&crq, 0, sizeof(crq)); |
2126 | crq.query_capability.first = IBMVNIC_CRQ_CMD; | |
2127 | crq.query_capability.cmd = QUERY_CAPABILITY; | |
2128 | ||
2129 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); | |
901e040a | 2130 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2131 | ibmvnic_send_crq(adapter, &crq); |
2132 | ||
2133 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); | |
901e040a | 2134 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2135 | ibmvnic_send_crq(adapter, &crq); |
2136 | ||
2137 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); | |
901e040a | 2138 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2139 | ibmvnic_send_crq(adapter, &crq); |
2140 | ||
2141 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); | |
901e040a | 2142 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2143 | ibmvnic_send_crq(adapter, &crq); |
2144 | ||
2145 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); | |
901e040a | 2146 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2147 | ibmvnic_send_crq(adapter, &crq); |
2148 | ||
2149 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); | |
901e040a | 2150 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2151 | ibmvnic_send_crq(adapter, &crq); |
2152 | ||
2153 | crq.query_capability.capability = | |
2154 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2155 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2156 | ibmvnic_send_crq(adapter, &crq); |
2157 | ||
2158 | crq.query_capability.capability = | |
2159 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 2160 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2161 | ibmvnic_send_crq(adapter, &crq); |
2162 | ||
2163 | crq.query_capability.capability = | |
2164 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2165 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2166 | ibmvnic_send_crq(adapter, &crq); |
2167 | ||
2168 | crq.query_capability.capability = | |
2169 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 2170 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2171 | ibmvnic_send_crq(adapter, &crq); |
2172 | ||
2173 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); | |
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(PROMISC_SUPPORTED); | |
901e040a | 2178 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2179 | ibmvnic_send_crq(adapter, &crq); |
2180 | ||
2181 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); | |
901e040a | 2182 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2183 | ibmvnic_send_crq(adapter, &crq); |
2184 | ||
2185 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); | |
901e040a | 2186 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2187 | ibmvnic_send_crq(adapter, &crq); |
2188 | ||
2189 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); | |
901e040a | 2190 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2191 | ibmvnic_send_crq(adapter, &crq); |
2192 | ||
2193 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); | |
901e040a | 2194 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2195 | ibmvnic_send_crq(adapter, &crq); |
2196 | ||
2197 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); | |
901e040a | 2198 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2199 | ibmvnic_send_crq(adapter, &crq); |
2200 | ||
2201 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); | |
901e040a | 2202 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2203 | ibmvnic_send_crq(adapter, &crq); |
2204 | ||
2205 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); | |
901e040a | 2206 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2207 | ibmvnic_send_crq(adapter, &crq); |
2208 | ||
2209 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); | |
901e040a | 2210 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2211 | ibmvnic_send_crq(adapter, &crq); |
2212 | ||
2213 | crq.query_capability.capability = | |
2214 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); | |
901e040a | 2215 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2216 | ibmvnic_send_crq(adapter, &crq); |
2217 | ||
2218 | crq.query_capability.capability = | |
2219 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2220 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2221 | ibmvnic_send_crq(adapter, &crq); |
2222 | ||
2223 | crq.query_capability.capability = | |
2224 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); | |
901e040a | 2225 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2226 | ibmvnic_send_crq(adapter, &crq); |
2227 | ||
2228 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); | |
901e040a | 2229 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2230 | ibmvnic_send_crq(adapter, &crq); |
2231 | } | |
2232 | ||
2233 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) | |
2234 | { | |
2235 | struct device *dev = &adapter->vdev->dev; | |
2236 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; | |
2237 | union ibmvnic_crq crq; | |
2238 | int i; | |
2239 | ||
2240 | dma_unmap_single(dev, adapter->ip_offload_tok, | |
2241 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); | |
2242 | ||
2243 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); | |
2244 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) | |
2245 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2246 | ((unsigned long int *)(buf))[i]); | |
2247 | ||
2248 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); | |
2249 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); | |
2250 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", | |
2251 | buf->tcp_ipv4_chksum); | |
2252 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", | |
2253 | buf->tcp_ipv6_chksum); | |
2254 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", | |
2255 | buf->udp_ipv4_chksum); | |
2256 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", | |
2257 | buf->udp_ipv6_chksum); | |
2258 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", | |
2259 | buf->large_tx_ipv4); | |
2260 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", | |
2261 | buf->large_tx_ipv6); | |
2262 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", | |
2263 | buf->large_rx_ipv4); | |
2264 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", | |
2265 | buf->large_rx_ipv6); | |
2266 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", | |
2267 | buf->max_ipv4_header_size); | |
2268 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", | |
2269 | buf->max_ipv6_header_size); | |
2270 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", | |
2271 | buf->max_tcp_header_size); | |
2272 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", | |
2273 | buf->max_udp_header_size); | |
2274 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", | |
2275 | buf->max_large_tx_size); | |
2276 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", | |
2277 | buf->max_large_rx_size); | |
2278 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", | |
2279 | buf->ipv6_extension_header); | |
2280 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", | |
2281 | buf->tcp_pseudosum_req); | |
2282 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", | |
2283 | buf->num_ipv6_ext_headers); | |
2284 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", | |
2285 | buf->off_ipv6_ext_headers); | |
2286 | ||
2287 | adapter->ip_offload_ctrl_tok = | |
2288 | dma_map_single(dev, &adapter->ip_offload_ctrl, | |
2289 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); | |
2290 | ||
2291 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { | |
2292 | dev_err(dev, "Couldn't map ip offload control buffer\n"); | |
2293 | return; | |
2294 | } | |
2295 | ||
2296 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); | |
2297 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; | |
2298 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; | |
2299 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; | |
2300 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; | |
2301 | ||
2302 | /* large_tx/rx disabled for now, additional features needed */ | |
2303 | adapter->ip_offload_ctrl.large_tx_ipv4 = 0; | |
2304 | adapter->ip_offload_ctrl.large_tx_ipv6 = 0; | |
2305 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; | |
2306 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; | |
2307 | ||
2308 | adapter->netdev->features = NETIF_F_GSO; | |
2309 | ||
2310 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) | |
2311 | adapter->netdev->features |= NETIF_F_IP_CSUM; | |
2312 | ||
2313 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) | |
2314 | adapter->netdev->features |= NETIF_F_IPV6_CSUM; | |
2315 | ||
9be02cdf TF |
2316 | if ((adapter->netdev->features & |
2317 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) | |
2318 | adapter->netdev->features |= NETIF_F_RXCSUM; | |
2319 | ||
032c5e82 TF |
2320 | memset(&crq, 0, sizeof(crq)); |
2321 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2322 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; | |
2323 | crq.control_ip_offload.len = | |
2324 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
2325 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); | |
2326 | ibmvnic_send_crq(adapter, &crq); | |
2327 | } | |
2328 | ||
2329 | static void handle_error_info_rsp(union ibmvnic_crq *crq, | |
2330 | struct ibmvnic_adapter *adapter) | |
2331 | { | |
2332 | struct device *dev = &adapter->vdev->dev; | |
96183182 | 2333 | struct ibmvnic_error_buff *error_buff, *tmp; |
032c5e82 TF |
2334 | unsigned long flags; |
2335 | bool found = false; | |
2336 | int i; | |
2337 | ||
2338 | if (!crq->request_error_rsp.rc.code) { | |
2339 | dev_info(dev, "Request Error Rsp returned with rc=%x\n", | |
2340 | crq->request_error_rsp.rc.code); | |
2341 | return; | |
2342 | } | |
2343 | ||
2344 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
96183182 | 2345 | list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) |
032c5e82 TF |
2346 | if (error_buff->error_id == crq->request_error_rsp.error_id) { |
2347 | found = true; | |
2348 | list_del(&error_buff->list); | |
2349 | break; | |
2350 | } | |
2351 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2352 | ||
2353 | if (!found) { | |
2354 | dev_err(dev, "Couldn't find error id %x\n", | |
75224c93 | 2355 | be32_to_cpu(crq->request_error_rsp.error_id)); |
032c5e82 TF |
2356 | return; |
2357 | } | |
2358 | ||
2359 | dev_err(dev, "Detailed info for error id %x:", | |
75224c93 | 2360 | be32_to_cpu(crq->request_error_rsp.error_id)); |
032c5e82 TF |
2361 | |
2362 | for (i = 0; i < error_buff->len; i++) { | |
2363 | pr_cont("%02x", (int)error_buff->buff[i]); | |
2364 | if (i % 8 == 7) | |
2365 | pr_cont(" "); | |
2366 | } | |
2367 | pr_cont("\n"); | |
2368 | ||
2369 | dma_unmap_single(dev, error_buff->dma, error_buff->len, | |
2370 | DMA_FROM_DEVICE); | |
2371 | kfree(error_buff->buff); | |
2372 | kfree(error_buff); | |
2373 | } | |
2374 | ||
032c5e82 TF |
2375 | static void handle_error_indication(union ibmvnic_crq *crq, |
2376 | struct ibmvnic_adapter *adapter) | |
2377 | { | |
2378 | int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz); | |
2379 | struct ibmvnic_inflight_cmd *inflight_cmd; | |
2380 | struct device *dev = &adapter->vdev->dev; | |
2381 | struct ibmvnic_error_buff *error_buff; | |
2382 | union ibmvnic_crq new_crq; | |
2383 | unsigned long flags; | |
2384 | ||
2385 | dev_err(dev, "Firmware reports %serror id %x, cause %d\n", | |
2386 | crq->error_indication. | |
2387 | flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "", | |
75224c93 TF |
2388 | be32_to_cpu(crq->error_indication.error_id), |
2389 | be16_to_cpu(crq->error_indication.error_cause)); | |
032c5e82 TF |
2390 | |
2391 | error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC); | |
2392 | if (!error_buff) | |
2393 | return; | |
2394 | ||
2395 | error_buff->buff = kmalloc(detail_len, GFP_ATOMIC); | |
2396 | if (!error_buff->buff) { | |
2397 | kfree(error_buff); | |
2398 | return; | |
2399 | } | |
2400 | ||
2401 | error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len, | |
2402 | DMA_FROM_DEVICE); | |
2403 | if (dma_mapping_error(dev, error_buff->dma)) { | |
2404 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2405 | dev_err(dev, "Couldn't map error buffer\n"); | |
2406 | kfree(error_buff->buff); | |
2407 | kfree(error_buff); | |
2408 | return; | |
2409 | } | |
2410 | ||
2411 | inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); | |
2412 | if (!inflight_cmd) { | |
2413 | dma_unmap_single(dev, error_buff->dma, detail_len, | |
2414 | DMA_FROM_DEVICE); | |
2415 | kfree(error_buff->buff); | |
2416 | kfree(error_buff); | |
2417 | return; | |
2418 | } | |
2419 | ||
2420 | error_buff->len = detail_len; | |
2421 | error_buff->error_id = crq->error_indication.error_id; | |
2422 | ||
2423 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
2424 | list_add_tail(&error_buff->list, &adapter->errors); | |
2425 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2426 | ||
2427 | memset(&new_crq, 0, sizeof(new_crq)); | |
2428 | new_crq.request_error_info.first = IBMVNIC_CRQ_CMD; | |
2429 | new_crq.request_error_info.cmd = REQUEST_ERROR_INFO; | |
2430 | new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma); | |
2431 | new_crq.request_error_info.len = cpu_to_be32(detail_len); | |
2432 | new_crq.request_error_info.error_id = crq->error_indication.error_id; | |
2433 | ||
2434 | memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); | |
2435 | ||
2436 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
2437 | list_add_tail(&inflight_cmd->list, &adapter->inflight); | |
2438 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2439 | ||
2440 | ibmvnic_send_crq(adapter, &new_crq); | |
2441 | } | |
2442 | ||
2443 | static void handle_change_mac_rsp(union ibmvnic_crq *crq, | |
2444 | struct ibmvnic_adapter *adapter) | |
2445 | { | |
2446 | struct net_device *netdev = adapter->netdev; | |
2447 | struct device *dev = &adapter->vdev->dev; | |
2448 | long rc; | |
2449 | ||
2450 | rc = crq->change_mac_addr_rsp.rc.code; | |
2451 | if (rc) { | |
2452 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); | |
2453 | return; | |
2454 | } | |
2455 | memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], | |
2456 | ETH_ALEN); | |
2457 | } | |
2458 | ||
2459 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, | |
2460 | struct ibmvnic_adapter *adapter) | |
2461 | { | |
2462 | struct device *dev = &adapter->vdev->dev; | |
2463 | u64 *req_value; | |
2464 | char *name; | |
2465 | ||
901e040a | 2466 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 TF |
2467 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { |
2468 | case REQ_TX_QUEUES: | |
2469 | req_value = &adapter->req_tx_queues; | |
2470 | name = "tx"; | |
2471 | break; | |
2472 | case REQ_RX_QUEUES: | |
2473 | req_value = &adapter->req_rx_queues; | |
2474 | name = "rx"; | |
2475 | break; | |
2476 | case REQ_RX_ADD_QUEUES: | |
2477 | req_value = &adapter->req_rx_add_queues; | |
2478 | name = "rx_add"; | |
2479 | break; | |
2480 | case REQ_TX_ENTRIES_PER_SUBCRQ: | |
2481 | req_value = &adapter->req_tx_entries_per_subcrq; | |
2482 | name = "tx_entries_per_subcrq"; | |
2483 | break; | |
2484 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2485 | req_value = &adapter->req_rx_add_entries_per_subcrq; | |
2486 | name = "rx_add_entries_per_subcrq"; | |
2487 | break; | |
2488 | case REQ_MTU: | |
2489 | req_value = &adapter->req_mtu; | |
2490 | name = "mtu"; | |
2491 | break; | |
2492 | case PROMISC_REQUESTED: | |
2493 | req_value = &adapter->promisc; | |
2494 | name = "promisc"; | |
2495 | break; | |
2496 | default: | |
2497 | dev_err(dev, "Got invalid cap request rsp %d\n", | |
2498 | crq->request_capability.capability); | |
2499 | return; | |
2500 | } | |
2501 | ||
2502 | switch (crq->request_capability_rsp.rc.code) { | |
2503 | case SUCCESS: | |
2504 | break; | |
2505 | case PARTIALSUCCESS: | |
2506 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", | |
2507 | *req_value, | |
28f4d165 | 2508 | (long int)be64_to_cpu(crq->request_capability_rsp. |
032c5e82 | 2509 | number), name); |
b510888f | 2510 | release_sub_crqs(adapter); |
28f4d165 | 2511 | *req_value = be64_to_cpu(crq->request_capability_rsp.number); |
ea22d51a | 2512 | init_sub_crqs(adapter, 1); |
032c5e82 TF |
2513 | return; |
2514 | default: | |
2515 | dev_err(dev, "Error %d in request cap rsp\n", | |
2516 | crq->request_capability_rsp.rc.code); | |
2517 | return; | |
2518 | } | |
2519 | ||
2520 | /* Done receiving requested capabilities, query IP offload support */ | |
901e040a | 2521 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
032c5e82 TF |
2522 | union ibmvnic_crq newcrq; |
2523 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); | |
2524 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = | |
2525 | &adapter->ip_offload_buf; | |
2526 | ||
249168ad | 2527 | adapter->wait_capability = false; |
032c5e82 TF |
2528 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, |
2529 | buf_sz, | |
2530 | DMA_FROM_DEVICE); | |
2531 | ||
2532 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { | |
2533 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
2534 | dev_err(dev, "Couldn't map offload buffer\n"); | |
2535 | return; | |
2536 | } | |
2537 | ||
2538 | memset(&newcrq, 0, sizeof(newcrq)); | |
2539 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2540 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; | |
2541 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); | |
2542 | newcrq.query_ip_offload.ioba = | |
2543 | cpu_to_be32(adapter->ip_offload_tok); | |
2544 | ||
2545 | ibmvnic_send_crq(adapter, &newcrq); | |
2546 | } | |
2547 | } | |
2548 | ||
2549 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, | |
2550 | struct ibmvnic_adapter *adapter) | |
2551 | { | |
2552 | struct device *dev = &adapter->vdev->dev; | |
2553 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; | |
2554 | struct ibmvnic_login_buffer *login = adapter->login_buf; | |
032c5e82 TF |
2555 | int i; |
2556 | ||
2557 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, | |
2558 | DMA_BIDIRECTIONAL); | |
2559 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
2560 | adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); | |
2561 | ||
498cd8e4 JA |
2562 | /* If the number of queues requested can't be allocated by the |
2563 | * server, the login response will return with code 1. We will need | |
2564 | * to resend the login buffer with fewer queues requested. | |
2565 | */ | |
2566 | if (login_rsp_crq->generic.rc.code) { | |
2567 | adapter->renegotiate = true; | |
2568 | complete(&adapter->init_done); | |
2569 | return 0; | |
2570 | } | |
2571 | ||
032c5e82 TF |
2572 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
2573 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { | |
2574 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2575 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); | |
2576 | } | |
2577 | ||
2578 | /* Sanity checks */ | |
2579 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || | |
2580 | (be32_to_cpu(login->num_rxcomp_subcrqs) * | |
2581 | adapter->req_rx_add_queues != | |
2582 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { | |
2583 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); | |
2584 | ibmvnic_remove(adapter->vdev); | |
2585 | return -EIO; | |
2586 | } | |
2587 | complete(&adapter->init_done); | |
2588 | ||
032c5e82 TF |
2589 | return 0; |
2590 | } | |
2591 | ||
2592 | static void handle_request_map_rsp(union ibmvnic_crq *crq, | |
2593 | struct ibmvnic_adapter *adapter) | |
2594 | { | |
2595 | struct device *dev = &adapter->vdev->dev; | |
2596 | u8 map_id = crq->request_map_rsp.map_id; | |
2597 | int tx_subcrqs; | |
2598 | int rx_subcrqs; | |
2599 | long rc; | |
2600 | int i; | |
2601 | ||
2602 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
2603 | rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
2604 | ||
2605 | rc = crq->request_map_rsp.rc.code; | |
2606 | if (rc) { | |
2607 | dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc); | |
2608 | adapter->map_id--; | |
2609 | /* need to find and zero tx/rx_pool map_id */ | |
2610 | for (i = 0; i < tx_subcrqs; i++) { | |
2611 | if (adapter->tx_pool[i].long_term_buff.map_id == map_id) | |
2612 | adapter->tx_pool[i].long_term_buff.map_id = 0; | |
2613 | } | |
2614 | for (i = 0; i < rx_subcrqs; i++) { | |
2615 | if (adapter->rx_pool[i].long_term_buff.map_id == map_id) | |
2616 | adapter->rx_pool[i].long_term_buff.map_id = 0; | |
2617 | } | |
2618 | } | |
2619 | complete(&adapter->fw_done); | |
2620 | } | |
2621 | ||
2622 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, | |
2623 | struct ibmvnic_adapter *adapter) | |
2624 | { | |
2625 | struct device *dev = &adapter->vdev->dev; | |
2626 | long rc; | |
2627 | ||
2628 | rc = crq->request_unmap_rsp.rc.code; | |
2629 | if (rc) | |
2630 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); | |
2631 | } | |
2632 | ||
2633 | static void handle_query_map_rsp(union ibmvnic_crq *crq, | |
2634 | struct ibmvnic_adapter *adapter) | |
2635 | { | |
2636 | struct net_device *netdev = adapter->netdev; | |
2637 | struct device *dev = &adapter->vdev->dev; | |
2638 | long rc; | |
2639 | ||
2640 | rc = crq->query_map_rsp.rc.code; | |
2641 | if (rc) { | |
2642 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); | |
2643 | return; | |
2644 | } | |
2645 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", | |
2646 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, | |
2647 | crq->query_map_rsp.free_pages); | |
2648 | } | |
2649 | ||
2650 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, | |
2651 | struct ibmvnic_adapter *adapter) | |
2652 | { | |
2653 | struct net_device *netdev = adapter->netdev; | |
2654 | struct device *dev = &adapter->vdev->dev; | |
2655 | long rc; | |
2656 | ||
901e040a | 2657 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 | 2658 | netdev_dbg(netdev, "Outstanding queries: %d\n", |
901e040a | 2659 | atomic_read(&adapter->running_cap_crqs)); |
032c5e82 TF |
2660 | rc = crq->query_capability.rc.code; |
2661 | if (rc) { | |
2662 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); | |
2663 | goto out; | |
2664 | } | |
2665 | ||
2666 | switch (be16_to_cpu(crq->query_capability.capability)) { | |
2667 | case MIN_TX_QUEUES: | |
2668 | adapter->min_tx_queues = | |
de89e854 | 2669 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2670 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
2671 | adapter->min_tx_queues); | |
2672 | break; | |
2673 | case MIN_RX_QUEUES: | |
2674 | adapter->min_rx_queues = | |
de89e854 | 2675 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2676 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
2677 | adapter->min_rx_queues); | |
2678 | break; | |
2679 | case MIN_RX_ADD_QUEUES: | |
2680 | adapter->min_rx_add_queues = | |
de89e854 | 2681 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2682 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
2683 | adapter->min_rx_add_queues); | |
2684 | break; | |
2685 | case MAX_TX_QUEUES: | |
2686 | adapter->max_tx_queues = | |
de89e854 | 2687 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2688 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
2689 | adapter->max_tx_queues); | |
2690 | break; | |
2691 | case MAX_RX_QUEUES: | |
2692 | adapter->max_rx_queues = | |
de89e854 | 2693 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2694 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
2695 | adapter->max_rx_queues); | |
2696 | break; | |
2697 | case MAX_RX_ADD_QUEUES: | |
2698 | adapter->max_rx_add_queues = | |
de89e854 | 2699 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2700 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
2701 | adapter->max_rx_add_queues); | |
2702 | break; | |
2703 | case MIN_TX_ENTRIES_PER_SUBCRQ: | |
2704 | adapter->min_tx_entries_per_subcrq = | |
de89e854 | 2705 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2706 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
2707 | adapter->min_tx_entries_per_subcrq); | |
2708 | break; | |
2709 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2710 | adapter->min_rx_add_entries_per_subcrq = | |
de89e854 | 2711 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2712 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
2713 | adapter->min_rx_add_entries_per_subcrq); | |
2714 | break; | |
2715 | case MAX_TX_ENTRIES_PER_SUBCRQ: | |
2716 | adapter->max_tx_entries_per_subcrq = | |
de89e854 | 2717 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2718 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
2719 | adapter->max_tx_entries_per_subcrq); | |
2720 | break; | |
2721 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2722 | adapter->max_rx_add_entries_per_subcrq = | |
de89e854 | 2723 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2724 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
2725 | adapter->max_rx_add_entries_per_subcrq); | |
2726 | break; | |
2727 | case TCP_IP_OFFLOAD: | |
2728 | adapter->tcp_ip_offload = | |
de89e854 | 2729 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2730 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
2731 | adapter->tcp_ip_offload); | |
2732 | break; | |
2733 | case PROMISC_SUPPORTED: | |
2734 | adapter->promisc_supported = | |
de89e854 | 2735 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2736 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
2737 | adapter->promisc_supported); | |
2738 | break; | |
2739 | case MIN_MTU: | |
de89e854 | 2740 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 2741 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
032c5e82 TF |
2742 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
2743 | break; | |
2744 | case MAX_MTU: | |
de89e854 | 2745 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 2746 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; |
032c5e82 TF |
2747 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
2748 | break; | |
2749 | case MAX_MULTICAST_FILTERS: | |
2750 | adapter->max_multicast_filters = | |
de89e854 | 2751 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2752 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
2753 | adapter->max_multicast_filters); | |
2754 | break; | |
2755 | case VLAN_HEADER_INSERTION: | |
2756 | adapter->vlan_header_insertion = | |
de89e854 | 2757 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2758 | if (adapter->vlan_header_insertion) |
2759 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; | |
2760 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", | |
2761 | adapter->vlan_header_insertion); | |
2762 | break; | |
2763 | case MAX_TX_SG_ENTRIES: | |
2764 | adapter->max_tx_sg_entries = | |
de89e854 | 2765 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2766 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
2767 | adapter->max_tx_sg_entries); | |
2768 | break; | |
2769 | case RX_SG_SUPPORTED: | |
2770 | adapter->rx_sg_supported = | |
de89e854 | 2771 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2772 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
2773 | adapter->rx_sg_supported); | |
2774 | break; | |
2775 | case OPT_TX_COMP_SUB_QUEUES: | |
2776 | adapter->opt_tx_comp_sub_queues = | |
de89e854 | 2777 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2778 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
2779 | adapter->opt_tx_comp_sub_queues); | |
2780 | break; | |
2781 | case OPT_RX_COMP_QUEUES: | |
2782 | adapter->opt_rx_comp_queues = | |
de89e854 | 2783 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2784 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
2785 | adapter->opt_rx_comp_queues); | |
2786 | break; | |
2787 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: | |
2788 | adapter->opt_rx_bufadd_q_per_rx_comp_q = | |
de89e854 | 2789 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2790 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
2791 | adapter->opt_rx_bufadd_q_per_rx_comp_q); | |
2792 | break; | |
2793 | case OPT_TX_ENTRIES_PER_SUBCRQ: | |
2794 | adapter->opt_tx_entries_per_subcrq = | |
de89e854 | 2795 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2796 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
2797 | adapter->opt_tx_entries_per_subcrq); | |
2798 | break; | |
2799 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: | |
2800 | adapter->opt_rxba_entries_per_subcrq = | |
de89e854 | 2801 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
2802 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
2803 | adapter->opt_rxba_entries_per_subcrq); | |
2804 | break; | |
2805 | case TX_RX_DESC_REQ: | |
2806 | adapter->tx_rx_desc_req = crq->query_capability.number; | |
2807 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", | |
2808 | adapter->tx_rx_desc_req); | |
2809 | break; | |
2810 | ||
2811 | default: | |
2812 | netdev_err(netdev, "Got invalid cap rsp %d\n", | |
2813 | crq->query_capability.capability); | |
2814 | } | |
2815 | ||
2816 | out: | |
249168ad TF |
2817 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
2818 | adapter->wait_capability = false; | |
ea22d51a | 2819 | init_sub_crqs(adapter, 0); |
032c5e82 | 2820 | /* We're done querying the capabilities, initialize sub-crqs */ |
249168ad | 2821 | } |
032c5e82 TF |
2822 | } |
2823 | ||
032c5e82 TF |
2824 | static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) |
2825 | { | |
96183182 | 2826 | struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1; |
032c5e82 | 2827 | struct device *dev = &adapter->vdev->dev; |
96183182 | 2828 | struct ibmvnic_error_buff *error_buff, *tmp2; |
032c5e82 TF |
2829 | unsigned long flags; |
2830 | unsigned long flags2; | |
2831 | ||
2832 | spin_lock_irqsave(&adapter->inflight_lock, flags); | |
96183182 | 2833 | list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) { |
032c5e82 TF |
2834 | switch (inflight_cmd->crq.generic.cmd) { |
2835 | case LOGIN: | |
2836 | dma_unmap_single(dev, adapter->login_buf_token, | |
2837 | adapter->login_buf_sz, | |
2838 | DMA_BIDIRECTIONAL); | |
2839 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
2840 | adapter->login_rsp_buf_sz, | |
2841 | DMA_BIDIRECTIONAL); | |
2842 | kfree(adapter->login_rsp_buf); | |
2843 | kfree(adapter->login_buf); | |
2844 | break; | |
032c5e82 TF |
2845 | case REQUEST_ERROR_INFO: |
2846 | spin_lock_irqsave(&adapter->error_list_lock, flags2); | |
96183182 WY |
2847 | list_for_each_entry_safe(error_buff, tmp2, |
2848 | &adapter->errors, list) { | |
032c5e82 TF |
2849 | dma_unmap_single(dev, error_buff->dma, |
2850 | error_buff->len, | |
2851 | DMA_FROM_DEVICE); | |
2852 | kfree(error_buff->buff); | |
2853 | list_del(&error_buff->list); | |
2854 | kfree(error_buff); | |
2855 | } | |
2856 | spin_unlock_irqrestore(&adapter->error_list_lock, | |
2857 | flags2); | |
2858 | break; | |
2859 | } | |
2860 | list_del(&inflight_cmd->list); | |
2861 | kfree(inflight_cmd); | |
2862 | } | |
2863 | spin_unlock_irqrestore(&adapter->inflight_lock, flags); | |
2864 | } | |
2865 | ||
9888d7b0 TF |
2866 | static void ibmvnic_xport_event(struct work_struct *work) |
2867 | { | |
2868 | struct ibmvnic_adapter *adapter = container_of(work, | |
2869 | struct ibmvnic_adapter, | |
2870 | ibmvnic_xport); | |
2871 | struct device *dev = &adapter->vdev->dev; | |
2872 | long rc; | |
2873 | ||
2874 | ibmvnic_free_inflight(adapter); | |
2875 | release_sub_crqs(adapter); | |
2876 | if (adapter->migrated) { | |
2877 | rc = ibmvnic_reenable_crq_queue(adapter); | |
2878 | if (rc) | |
2879 | dev_err(dev, "Error after enable rc=%ld\n", rc); | |
2880 | adapter->migrated = false; | |
2881 | rc = ibmvnic_send_crq_init(adapter); | |
2882 | if (rc) | |
2883 | dev_err(dev, "Error sending init rc=%ld\n", rc); | |
2884 | } | |
2885 | } | |
2886 | ||
032c5e82 TF |
2887 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, |
2888 | struct ibmvnic_adapter *adapter) | |
2889 | { | |
2890 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; | |
2891 | struct net_device *netdev = adapter->netdev; | |
2892 | struct device *dev = &adapter->vdev->dev; | |
2893 | long rc; | |
2894 | ||
2895 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", | |
2896 | ((unsigned long int *)crq)[0], | |
2897 | ((unsigned long int *)crq)[1]); | |
2898 | switch (gen_crq->first) { | |
2899 | case IBMVNIC_CRQ_INIT_RSP: | |
2900 | switch (gen_crq->cmd) { | |
2901 | case IBMVNIC_CRQ_INIT: | |
2902 | dev_info(dev, "Partner initialized\n"); | |
2903 | /* Send back a response */ | |
2904 | rc = ibmvnic_send_crq_init_complete(adapter); | |
65dc6891 TF |
2905 | if (!rc) |
2906 | schedule_work(&adapter->vnic_crq_init); | |
032c5e82 TF |
2907 | else |
2908 | dev_err(dev, "Can't send initrsp rc=%ld\n", rc); | |
2909 | break; | |
2910 | case IBMVNIC_CRQ_INIT_COMPLETE: | |
2911 | dev_info(dev, "Partner initialization complete\n"); | |
2912 | send_version_xchg(adapter); | |
2913 | break; | |
2914 | default: | |
2915 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); | |
2916 | } | |
2917 | return; | |
2918 | case IBMVNIC_CRQ_XPORT_EVENT: | |
2919 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { | |
2920 | dev_info(dev, "Re-enabling adapter\n"); | |
2921 | adapter->migrated = true; | |
9888d7b0 | 2922 | schedule_work(&adapter->ibmvnic_xport); |
dfad09a6 TF |
2923 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
2924 | dev_info(dev, "Backing device failover detected\n"); | |
2925 | netif_carrier_off(netdev); | |
2926 | adapter->failover = true; | |
032c5e82 TF |
2927 | } else { |
2928 | /* The adapter lost the connection */ | |
2929 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", | |
2930 | gen_crq->cmd); | |
9888d7b0 | 2931 | schedule_work(&adapter->ibmvnic_xport); |
032c5e82 TF |
2932 | } |
2933 | return; | |
2934 | case IBMVNIC_CRQ_CMD_RSP: | |
2935 | break; | |
2936 | default: | |
2937 | dev_err(dev, "Got an invalid msg type 0x%02x\n", | |
2938 | gen_crq->first); | |
2939 | return; | |
2940 | } | |
2941 | ||
2942 | switch (gen_crq->cmd) { | |
2943 | case VERSION_EXCHANGE_RSP: | |
2944 | rc = crq->version_exchange_rsp.rc.code; | |
2945 | if (rc) { | |
2946 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); | |
2947 | break; | |
2948 | } | |
2949 | dev_info(dev, "Partner protocol version is %d\n", | |
2950 | crq->version_exchange_rsp.version); | |
2951 | if (be16_to_cpu(crq->version_exchange_rsp.version) < | |
2952 | ibmvnic_version) | |
2953 | ibmvnic_version = | |
2954 | be16_to_cpu(crq->version_exchange_rsp.version); | |
2955 | send_cap_queries(adapter); | |
2956 | break; | |
2957 | case QUERY_CAPABILITY_RSP: | |
2958 | handle_query_cap_rsp(crq, adapter); | |
2959 | break; | |
2960 | case QUERY_MAP_RSP: | |
2961 | handle_query_map_rsp(crq, adapter); | |
2962 | break; | |
2963 | case REQUEST_MAP_RSP: | |
2964 | handle_request_map_rsp(crq, adapter); | |
2965 | break; | |
2966 | case REQUEST_UNMAP_RSP: | |
2967 | handle_request_unmap_rsp(crq, adapter); | |
2968 | break; | |
2969 | case REQUEST_CAPABILITY_RSP: | |
2970 | handle_request_cap_rsp(crq, adapter); | |
2971 | break; | |
2972 | case LOGIN_RSP: | |
2973 | netdev_dbg(netdev, "Got Login Response\n"); | |
2974 | handle_login_rsp(crq, adapter); | |
2975 | break; | |
2976 | case LOGICAL_LINK_STATE_RSP: | |
2977 | netdev_dbg(netdev, "Got Logical Link State Response\n"); | |
2978 | adapter->logical_link_state = | |
2979 | crq->logical_link_state_rsp.link_state; | |
2980 | break; | |
2981 | case LINK_STATE_INDICATION: | |
2982 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); | |
2983 | adapter->phys_link_state = | |
2984 | crq->link_state_indication.phys_link_state; | |
2985 | adapter->logical_link_state = | |
2986 | crq->link_state_indication.logical_link_state; | |
2987 | break; | |
2988 | case CHANGE_MAC_ADDR_RSP: | |
2989 | netdev_dbg(netdev, "Got MAC address change Response\n"); | |
2990 | handle_change_mac_rsp(crq, adapter); | |
2991 | break; | |
2992 | case ERROR_INDICATION: | |
2993 | netdev_dbg(netdev, "Got Error Indication\n"); | |
2994 | handle_error_indication(crq, adapter); | |
2995 | break; | |
2996 | case REQUEST_ERROR_RSP: | |
2997 | netdev_dbg(netdev, "Got Error Detail Response\n"); | |
2998 | handle_error_info_rsp(crq, adapter); | |
2999 | break; | |
3000 | case REQUEST_STATISTICS_RSP: | |
3001 | netdev_dbg(netdev, "Got Statistics Response\n"); | |
3002 | complete(&adapter->stats_done); | |
3003 | break; | |
032c5e82 TF |
3004 | case QUERY_IP_OFFLOAD_RSP: |
3005 | netdev_dbg(netdev, "Got Query IP offload Response\n"); | |
3006 | handle_query_ip_offload_rsp(adapter); | |
3007 | break; | |
3008 | case MULTICAST_CTRL_RSP: | |
3009 | netdev_dbg(netdev, "Got multicast control Response\n"); | |
3010 | break; | |
3011 | case CONTROL_IP_OFFLOAD_RSP: | |
3012 | netdev_dbg(netdev, "Got Control IP offload Response\n"); | |
3013 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, | |
3014 | sizeof(adapter->ip_offload_ctrl), | |
3015 | DMA_TO_DEVICE); | |
bd0b6723 | 3016 | complete(&adapter->init_done); |
032c5e82 | 3017 | break; |
032c5e82 TF |
3018 | case COLLECT_FW_TRACE_RSP: |
3019 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); | |
3020 | complete(&adapter->fw_done); | |
3021 | break; | |
3022 | default: | |
3023 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", | |
3024 | gen_crq->cmd); | |
3025 | } | |
3026 | } | |
3027 | ||
3028 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) | |
3029 | { | |
3030 | struct ibmvnic_adapter *adapter = instance; | |
6c267b3d TF |
3031 | unsigned long flags; |
3032 | ||
3033 | spin_lock_irqsave(&adapter->crq.lock, flags); | |
3034 | vio_disable_interrupts(adapter->vdev); | |
3035 | tasklet_schedule(&adapter->tasklet); | |
3036 | spin_unlock_irqrestore(&adapter->crq.lock, flags); | |
3037 | return IRQ_HANDLED; | |
3038 | } | |
3039 | ||
3040 | static void ibmvnic_tasklet(void *data) | |
3041 | { | |
3042 | struct ibmvnic_adapter *adapter = data; | |
032c5e82 TF |
3043 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
3044 | struct vio_dev *vdev = adapter->vdev; | |
3045 | union ibmvnic_crq *crq; | |
3046 | unsigned long flags; | |
3047 | bool done = false; | |
3048 | ||
3049 | spin_lock_irqsave(&queue->lock, flags); | |
3050 | vio_disable_interrupts(vdev); | |
3051 | while (!done) { | |
3052 | /* Pull all the valid messages off the CRQ */ | |
3053 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { | |
3054 | ibmvnic_handle_crq(crq, adapter); | |
3055 | crq->generic.first = 0; | |
3056 | } | |
3057 | vio_enable_interrupts(vdev); | |
3058 | crq = ibmvnic_next_crq(adapter); | |
3059 | if (crq) { | |
3060 | vio_disable_interrupts(vdev); | |
3061 | ibmvnic_handle_crq(crq, adapter); | |
3062 | crq->generic.first = 0; | |
3063 | } else { | |
249168ad TF |
3064 | /* remain in tasklet until all |
3065 | * capabilities responses are received | |
3066 | */ | |
3067 | if (!adapter->wait_capability) | |
3068 | done = true; | |
032c5e82 TF |
3069 | } |
3070 | } | |
249168ad TF |
3071 | /* if capabilities CRQ's were sent in this tasklet, the following |
3072 | * tasklet must wait until all responses are received | |
3073 | */ | |
3074 | if (atomic_read(&adapter->running_cap_crqs) != 0) | |
3075 | adapter->wait_capability = true; | |
032c5e82 | 3076 | spin_unlock_irqrestore(&queue->lock, flags); |
032c5e82 TF |
3077 | } |
3078 | ||
3079 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) | |
3080 | { | |
3081 | struct vio_dev *vdev = adapter->vdev; | |
3082 | int rc; | |
3083 | ||
3084 | do { | |
3085 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); | |
3086 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3087 | ||
3088 | if (rc) | |
3089 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); | |
3090 | ||
3091 | return rc; | |
3092 | } | |
3093 | ||
3094 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) | |
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; | |
3100 | ||
3101 | /* Close the CRQ */ | |
3102 | do { | |
3103 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3104 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3105 | ||
3106 | /* Clean out the queue */ | |
3107 | memset(crq->msgs, 0, PAGE_SIZE); | |
3108 | crq->cur = 0; | |
3109 | ||
3110 | /* And re-open it again */ | |
3111 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3112 | crq->msg_token, PAGE_SIZE); | |
3113 | ||
3114 | if (rc == H_CLOSED) | |
3115 | /* Adapter is good, but other end is not ready */ | |
3116 | dev_warn(dev, "Partner adapter not ready\n"); | |
3117 | else if (rc != 0) | |
3118 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); | |
3119 | ||
3120 | return rc; | |
3121 | } | |
3122 | ||
f992887c | 3123 | static void release_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3124 | { |
3125 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3126 | struct vio_dev *vdev = adapter->vdev; | |
3127 | long rc; | |
3128 | ||
f992887c NF |
3129 | if (!crq->msgs) |
3130 | return; | |
3131 | ||
032c5e82 TF |
3132 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); |
3133 | free_irq(vdev->irq, adapter); | |
6c267b3d | 3134 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
3135 | do { |
3136 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3137 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3138 | ||
3139 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, | |
3140 | DMA_BIDIRECTIONAL); | |
3141 | free_page((unsigned long)crq->msgs); | |
f992887c | 3142 | crq->msgs = NULL; |
032c5e82 TF |
3143 | } |
3144 | ||
f992887c | 3145 | static int init_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3146 | { |
3147 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3148 | struct device *dev = &adapter->vdev->dev; | |
3149 | struct vio_dev *vdev = adapter->vdev; | |
3150 | int rc, retrc = -ENOMEM; | |
3151 | ||
f992887c NF |
3152 | if (crq->msgs) |
3153 | return 0; | |
3154 | ||
032c5e82 TF |
3155 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); |
3156 | /* Should we allocate more than one page? */ | |
3157 | ||
3158 | if (!crq->msgs) | |
3159 | return -ENOMEM; | |
3160 | ||
3161 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); | |
3162 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, | |
3163 | DMA_BIDIRECTIONAL); | |
3164 | if (dma_mapping_error(dev, crq->msg_token)) | |
3165 | goto map_failed; | |
3166 | ||
3167 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3168 | crq->msg_token, PAGE_SIZE); | |
3169 | ||
3170 | if (rc == H_RESOURCE) | |
3171 | /* maybe kexecing and resource is busy. try a reset */ | |
3172 | rc = ibmvnic_reset_crq(adapter); | |
3173 | retrc = rc; | |
3174 | ||
3175 | if (rc == H_CLOSED) { | |
3176 | dev_warn(dev, "Partner adapter not ready\n"); | |
3177 | } else if (rc) { | |
3178 | dev_warn(dev, "Error %d opening adapter\n", rc); | |
3179 | goto reg_crq_failed; | |
3180 | } | |
3181 | ||
3182 | retrc = 0; | |
3183 | ||
6c267b3d TF |
3184 | tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet, |
3185 | (unsigned long)adapter); | |
3186 | ||
032c5e82 TF |
3187 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); |
3188 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, | |
3189 | adapter); | |
3190 | if (rc) { | |
3191 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", | |
3192 | vdev->irq, rc); | |
3193 | goto req_irq_failed; | |
3194 | } | |
3195 | ||
3196 | rc = vio_enable_interrupts(vdev); | |
3197 | if (rc) { | |
3198 | dev_err(dev, "Error %d enabling interrupts\n", rc); | |
3199 | goto req_irq_failed; | |
3200 | } | |
3201 | ||
3202 | crq->cur = 0; | |
3203 | spin_lock_init(&crq->lock); | |
3204 | ||
3205 | return retrc; | |
3206 | ||
3207 | req_irq_failed: | |
6c267b3d | 3208 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
3209 | do { |
3210 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3211 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3212 | reg_crq_failed: | |
3213 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
3214 | map_failed: | |
3215 | free_page((unsigned long)crq->msgs); | |
f992887c | 3216 | crq->msgs = NULL; |
032c5e82 TF |
3217 | return retrc; |
3218 | } | |
3219 | ||
65dc6891 TF |
3220 | static void handle_crq_init_rsp(struct work_struct *work) |
3221 | { | |
3222 | struct ibmvnic_adapter *adapter = container_of(work, | |
3223 | struct ibmvnic_adapter, | |
3224 | vnic_crq_init); | |
3225 | struct device *dev = &adapter->vdev->dev; | |
3226 | struct net_device *netdev = adapter->netdev; | |
3227 | unsigned long timeout = msecs_to_jiffies(30000); | |
dfad09a6 | 3228 | bool restart = false; |
65dc6891 TF |
3229 | int rc; |
3230 | ||
dfad09a6 TF |
3231 | if (adapter->failover) { |
3232 | release_sub_crqs(adapter); | |
3233 | if (netif_running(netdev)) { | |
3234 | netif_tx_disable(netdev); | |
3235 | ibmvnic_close(netdev); | |
3236 | restart = true; | |
3237 | } | |
3238 | } | |
3239 | ||
65dc6891 | 3240 | reinit_completion(&adapter->init_done); |
db5d0b59 | 3241 | send_version_xchg(adapter); |
65dc6891 TF |
3242 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { |
3243 | dev_err(dev, "Passive init timeout\n"); | |
3244 | goto task_failed; | |
3245 | } | |
3246 | ||
f39f0d1e | 3247 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
65dc6891 | 3248 | |
dfad09a6 TF |
3249 | if (adapter->failover) { |
3250 | adapter->failover = false; | |
3251 | if (restart) { | |
3252 | rc = ibmvnic_open(netdev); | |
3253 | if (rc) | |
3254 | goto restart_failed; | |
3255 | } | |
3256 | netif_carrier_on(netdev); | |
3257 | return; | |
3258 | } | |
3259 | ||
65dc6891 TF |
3260 | rc = register_netdev(netdev); |
3261 | if (rc) { | |
3262 | dev_err(dev, | |
3263 | "failed to register netdev rc=%d\n", rc); | |
3264 | goto register_failed; | |
3265 | } | |
3266 | dev_info(dev, "ibmvnic registered\n"); | |
3267 | ||
3268 | return; | |
3269 | ||
dfad09a6 TF |
3270 | restart_failed: |
3271 | dev_err(dev, "Failed to restart ibmvnic, rc=%d\n", rc); | |
65dc6891 TF |
3272 | register_failed: |
3273 | release_sub_crqs(adapter); | |
3274 | task_failed: | |
3275 | dev_err(dev, "Passive initialization was not successful\n"); | |
3276 | } | |
3277 | ||
f6ef6408 | 3278 | static int ibmvnic_init(struct ibmvnic_adapter *adapter) |
032c5e82 | 3279 | { |
f6ef6408 | 3280 | struct device *dev = &adapter->vdev->dev; |
ea22d51a | 3281 | unsigned long timeout = msecs_to_jiffies(30000); |
f6ef6408 JA |
3282 | int rc; |
3283 | ||
f992887c | 3284 | rc = init_crq_queue(adapter); |
f6ef6408 JA |
3285 | if (rc) { |
3286 | dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); | |
3287 | return rc; | |
3288 | } | |
3289 | ||
7bbc27a4 NF |
3290 | rc = init_stats_token(adapter); |
3291 | if (rc) { | |
f992887c | 3292 | release_crq_queue(adapter); |
7bbc27a4 | 3293 | return rc; |
f6ef6408 JA |
3294 | } |
3295 | ||
f6ef6408 JA |
3296 | init_completion(&adapter->init_done); |
3297 | ibmvnic_send_crq_init(adapter); | |
3298 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
3299 | dev_err(dev, "Initialization sequence timed out\n"); | |
f992887c | 3300 | release_crq_queue(adapter); |
f6ef6408 JA |
3301 | return -1; |
3302 | } | |
3303 | ||
3304 | return 0; | |
3305 | } | |
3306 | ||
3307 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) | |
3308 | { | |
032c5e82 TF |
3309 | struct ibmvnic_adapter *adapter; |
3310 | struct net_device *netdev; | |
3311 | unsigned char *mac_addr_p; | |
032c5e82 TF |
3312 | int rc; |
3313 | ||
3314 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", | |
3315 | dev->unit_address); | |
3316 | ||
3317 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, | |
3318 | VETH_MAC_ADDR, NULL); | |
3319 | if (!mac_addr_p) { | |
3320 | dev_err(&dev->dev, | |
3321 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", | |
3322 | __FILE__, __LINE__); | |
3323 | return 0; | |
3324 | } | |
3325 | ||
3326 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), | |
3327 | IBMVNIC_MAX_TX_QUEUES); | |
3328 | if (!netdev) | |
3329 | return -ENOMEM; | |
3330 | ||
3331 | adapter = netdev_priv(netdev); | |
3332 | dev_set_drvdata(&dev->dev, netdev); | |
3333 | adapter->vdev = dev; | |
3334 | adapter->netdev = netdev; | |
dfad09a6 | 3335 | adapter->failover = false; |
032c5e82 TF |
3336 | |
3337 | ether_addr_copy(adapter->mac_addr, mac_addr_p); | |
3338 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); | |
3339 | netdev->irq = dev->irq; | |
3340 | netdev->netdev_ops = &ibmvnic_netdev_ops; | |
3341 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; | |
3342 | SET_NETDEV_DEV(netdev, &dev->dev); | |
3343 | ||
65dc6891 | 3344 | INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp); |
9888d7b0 | 3345 | INIT_WORK(&adapter->ibmvnic_xport, ibmvnic_xport_event); |
65dc6891 | 3346 | |
032c5e82 TF |
3347 | spin_lock_init(&adapter->stats_lock); |
3348 | ||
032c5e82 TF |
3349 | INIT_LIST_HEAD(&adapter->errors); |
3350 | INIT_LIST_HEAD(&adapter->inflight); | |
3351 | spin_lock_init(&adapter->error_list_lock); | |
3352 | spin_lock_init(&adapter->inflight_lock); | |
3353 | ||
f6ef6408 JA |
3354 | rc = ibmvnic_init(adapter); |
3355 | if (rc) { | |
3356 | free_netdev(netdev); | |
3357 | return rc; | |
032c5e82 | 3358 | } |
032c5e82 | 3359 | |
f39f0d1e | 3360 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
ea5509f5 | 3361 | adapter->is_closed = false; |
032c5e82 TF |
3362 | |
3363 | rc = register_netdev(netdev); | |
3364 | if (rc) { | |
3365 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); | |
f6ef6408 JA |
3366 | free_netdev(netdev); |
3367 | return rc; | |
032c5e82 TF |
3368 | } |
3369 | dev_info(&dev->dev, "ibmvnic registered\n"); | |
3370 | ||
3371 | return 0; | |
032c5e82 TF |
3372 | } |
3373 | ||
3374 | static int ibmvnic_remove(struct vio_dev *dev) | |
3375 | { | |
3376 | struct net_device *netdev = dev_get_drvdata(&dev->dev); | |
032c5e82 TF |
3377 | |
3378 | unregister_netdev(netdev); | |
032c5e82 TF |
3379 | free_netdev(netdev); |
3380 | dev_set_drvdata(&dev->dev, NULL); | |
3381 | ||
3382 | return 0; | |
3383 | } | |
3384 | ||
3385 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) | |
3386 | { | |
3387 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
3388 | struct ibmvnic_adapter *adapter; | |
3389 | struct iommu_table *tbl; | |
3390 | unsigned long ret = 0; | |
3391 | int i; | |
3392 | ||
3393 | tbl = get_iommu_table_base(&vdev->dev); | |
3394 | ||
3395 | /* netdev inits at probe time along with the structures we need below*/ | |
3396 | if (!netdev) | |
3397 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); | |
3398 | ||
3399 | adapter = netdev_priv(netdev); | |
3400 | ||
3401 | ret += PAGE_SIZE; /* the crq message queue */ | |
3402 | ret += adapter->bounce_buffer_size; | |
3403 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); | |
3404 | ||
3405 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) | |
3406 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ | |
3407 | ||
3408 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
3409 | i++) | |
3410 | ret += adapter->rx_pool[i].size * | |
3411 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); | |
3412 | ||
3413 | return ret; | |
3414 | } | |
3415 | ||
3416 | static int ibmvnic_resume(struct device *dev) | |
3417 | { | |
3418 | struct net_device *netdev = dev_get_drvdata(dev); | |
3419 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3420 | int i; | |
3421 | ||
3422 | /* kick the interrupt handlers just in case we lost an interrupt */ | |
3423 | for (i = 0; i < adapter->req_rx_queues; i++) | |
3424 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
3425 | adapter->rx_scrq[i]); | |
3426 | ||
3427 | return 0; | |
3428 | } | |
3429 | ||
3430 | static struct vio_device_id ibmvnic_device_table[] = { | |
3431 | {"network", "IBM,vnic"}, | |
3432 | {"", "" } | |
3433 | }; | |
3434 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); | |
3435 | ||
3436 | static const struct dev_pm_ops ibmvnic_pm_ops = { | |
3437 | .resume = ibmvnic_resume | |
3438 | }; | |
3439 | ||
3440 | static struct vio_driver ibmvnic_driver = { | |
3441 | .id_table = ibmvnic_device_table, | |
3442 | .probe = ibmvnic_probe, | |
3443 | .remove = ibmvnic_remove, | |
3444 | .get_desired_dma = ibmvnic_get_desired_dma, | |
3445 | .name = ibmvnic_driver_name, | |
3446 | .pm = &ibmvnic_pm_ops, | |
3447 | }; | |
3448 | ||
3449 | /* module functions */ | |
3450 | static int __init ibmvnic_module_init(void) | |
3451 | { | |
3452 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, | |
3453 | IBMVNIC_DRIVER_VERSION); | |
3454 | ||
3455 | return vio_register_driver(&ibmvnic_driver); | |
3456 | } | |
3457 | ||
3458 | static void __exit ibmvnic_module_exit(void) | |
3459 | { | |
3460 | vio_unregister_driver(&ibmvnic_driver); | |
3461 | } | |
3462 | ||
3463 | module_init(ibmvnic_module_init); | |
3464 | module_exit(ibmvnic_module_exit); |