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Commit | Line | Data |
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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> |
6052d5e2 | 77 | #include <linux/if_vlan.h> |
032c5e82 TF |
78 | |
79 | #include "ibmvnic.h" | |
80 | ||
81 | static const char ibmvnic_driver_name[] = "ibmvnic"; | |
82 | static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver"; | |
83 | ||
78b07ac1 | 84 | MODULE_AUTHOR("Santiago Leon"); |
032c5e82 TF |
85 | MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver"); |
86 | MODULE_LICENSE("GPL"); | |
87 | MODULE_VERSION(IBMVNIC_DRIVER_VERSION); | |
88 | ||
89 | static int ibmvnic_version = IBMVNIC_INITIAL_VERSION; | |
90 | static int ibmvnic_remove(struct vio_dev *); | |
91 | static void release_sub_crqs(struct ibmvnic_adapter *); | |
92 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); | |
93 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); | |
94 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); | |
95 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); | |
96 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
97 | union sub_crq *sub_crq); | |
ad7775dc | 98 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
032c5e82 TF |
99 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
100 | static int enable_scrq_irq(struct ibmvnic_adapter *, | |
101 | struct ibmvnic_sub_crq_queue *); | |
102 | static int disable_scrq_irq(struct ibmvnic_adapter *, | |
103 | struct ibmvnic_sub_crq_queue *); | |
104 | static int pending_scrq(struct ibmvnic_adapter *, | |
105 | struct ibmvnic_sub_crq_queue *); | |
106 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, | |
107 | struct ibmvnic_sub_crq_queue *); | |
108 | static int ibmvnic_poll(struct napi_struct *napi, int data); | |
109 | static void send_map_query(struct ibmvnic_adapter *adapter); | |
110 | static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); | |
111 | static void send_request_unmap(struct ibmvnic_adapter *, u8); | |
bd0b6723 JA |
112 | static void send_login(struct ibmvnic_adapter *adapter); |
113 | static void send_cap_queries(struct ibmvnic_adapter *adapter); | |
114 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter); | |
ea5509f5 | 115 | static int ibmvnic_init(struct ibmvnic_adapter *); |
f992887c | 116 | static void release_crq_queue(struct ibmvnic_adapter *); |
032c5e82 TF |
117 | |
118 | struct ibmvnic_stat { | |
119 | char name[ETH_GSTRING_LEN]; | |
120 | int offset; | |
121 | }; | |
122 | ||
123 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ | |
124 | offsetof(struct ibmvnic_statistics, stat)) | |
125 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) | |
126 | ||
127 | static const struct ibmvnic_stat ibmvnic_stats[] = { | |
128 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, | |
129 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, | |
130 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, | |
131 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, | |
132 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, | |
133 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, | |
134 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, | |
135 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, | |
136 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, | |
137 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, | |
138 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, | |
139 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, | |
140 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, | |
141 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, | |
142 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, | |
143 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, | |
144 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, | |
145 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, | |
146 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, | |
147 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, | |
148 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, | |
149 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, | |
150 | }; | |
151 | ||
152 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, | |
153 | unsigned long length, unsigned long *number, | |
154 | unsigned long *irq) | |
155 | { | |
156 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
157 | long rc; | |
158 | ||
159 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); | |
160 | *number = retbuf[0]; | |
161 | *irq = retbuf[1]; | |
162 | ||
163 | return rc; | |
164 | } | |
165 | ||
032c5e82 TF |
166 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, |
167 | struct ibmvnic_long_term_buff *ltb, int size) | |
168 | { | |
169 | struct device *dev = &adapter->vdev->dev; | |
170 | ||
171 | ltb->size = size; | |
172 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, | |
173 | GFP_KERNEL); | |
174 | ||
175 | if (!ltb->buff) { | |
176 | dev_err(dev, "Couldn't alloc long term buffer\n"); | |
177 | return -ENOMEM; | |
178 | } | |
179 | ltb->map_id = adapter->map_id; | |
180 | adapter->map_id++; | |
db5d0b59 NF |
181 | |
182 | init_completion(&adapter->fw_done); | |
032c5e82 TF |
183 | send_request_map(adapter, ltb->addr, |
184 | ltb->size, ltb->map_id); | |
032c5e82 | 185 | wait_for_completion(&adapter->fw_done); |
f3be0cbc TF |
186 | |
187 | if (adapter->fw_done_rc) { | |
188 | dev_err(dev, "Couldn't map long term buffer,rc = %d\n", | |
189 | adapter->fw_done_rc); | |
190 | return -1; | |
191 | } | |
032c5e82 TF |
192 | return 0; |
193 | } | |
194 | ||
195 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, | |
196 | struct ibmvnic_long_term_buff *ltb) | |
197 | { | |
198 | struct device *dev = &adapter->vdev->dev; | |
199 | ||
c657e32c NF |
200 | if (!ltb->buff) |
201 | return; | |
202 | ||
ed651a10 NF |
203 | if (adapter->reset_reason != VNIC_RESET_FAILOVER && |
204 | adapter->reset_reason != VNIC_RESET_MOBILITY) | |
dfad09a6 | 205 | send_request_unmap(adapter, ltb->map_id); |
59af56c2 | 206 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
032c5e82 TF |
207 | } |
208 | ||
f3be0cbc TF |
209 | static int reset_long_term_buff(struct ibmvnic_adapter *adapter, |
210 | struct ibmvnic_long_term_buff *ltb) | |
211 | { | |
212 | memset(ltb->buff, 0, ltb->size); | |
213 | ||
214 | init_completion(&adapter->fw_done); | |
215 | send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id); | |
216 | wait_for_completion(&adapter->fw_done); | |
217 | ||
218 | if (adapter->fw_done_rc) { | |
219 | dev_info(&adapter->vdev->dev, | |
220 | "Reset failed, attempting to free and reallocate buffer\n"); | |
221 | free_long_term_buff(adapter, ltb); | |
222 | return alloc_long_term_buff(adapter, ltb, ltb->size); | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
f185a49a TF |
227 | static void deactivate_rx_pools(struct ibmvnic_adapter *adapter) |
228 | { | |
229 | int i; | |
230 | ||
231 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
232 | i++) | |
233 | adapter->rx_pool[i].active = 0; | |
234 | } | |
235 | ||
032c5e82 TF |
236 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, |
237 | struct ibmvnic_rx_pool *pool) | |
238 | { | |
239 | int count = pool->size - atomic_read(&pool->available); | |
240 | struct device *dev = &adapter->vdev->dev; | |
241 | int buffers_added = 0; | |
242 | unsigned long lpar_rc; | |
243 | union sub_crq sub_crq; | |
244 | struct sk_buff *skb; | |
245 | unsigned int offset; | |
246 | dma_addr_t dma_addr; | |
247 | unsigned char *dst; | |
248 | u64 *handle_array; | |
249 | int shift = 0; | |
250 | int index; | |
251 | int i; | |
252 | ||
f185a49a TF |
253 | if (!pool->active) |
254 | return; | |
255 | ||
032c5e82 TF |
256 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + |
257 | be32_to_cpu(adapter->login_rsp_buf-> | |
258 | off_rxadd_subcrqs)); | |
259 | ||
260 | for (i = 0; i < count; ++i) { | |
261 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
262 | if (!skb) { | |
263 | dev_err(dev, "Couldn't replenish rx buff\n"); | |
264 | adapter->replenish_no_mem++; | |
265 | break; | |
266 | } | |
267 | ||
268 | index = pool->free_map[pool->next_free]; | |
269 | ||
270 | if (pool->rx_buff[index].skb) | |
271 | dev_err(dev, "Inconsistent free_map!\n"); | |
272 | ||
273 | /* Copy the skb to the long term mapped DMA buffer */ | |
274 | offset = index * pool->buff_size; | |
275 | dst = pool->long_term_buff.buff + offset; | |
276 | memset(dst, 0, pool->buff_size); | |
277 | dma_addr = pool->long_term_buff.addr + offset; | |
278 | pool->rx_buff[index].data = dst; | |
279 | ||
280 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; | |
281 | pool->rx_buff[index].dma = dma_addr; | |
282 | pool->rx_buff[index].skb = skb; | |
283 | pool->rx_buff[index].pool_index = pool->index; | |
284 | pool->rx_buff[index].size = pool->buff_size; | |
285 | ||
286 | memset(&sub_crq, 0, sizeof(sub_crq)); | |
287 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; | |
288 | sub_crq.rx_add.correlator = | |
289 | cpu_to_be64((u64)&pool->rx_buff[index]); | |
290 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); | |
291 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; | |
292 | ||
293 | /* The length field of the sCRQ is defined to be 24 bits so the | |
294 | * buffer size needs to be left shifted by a byte before it is | |
295 | * converted to big endian to prevent the last byte from being | |
296 | * truncated. | |
297 | */ | |
298 | #ifdef __LITTLE_ENDIAN__ | |
299 | shift = 8; | |
300 | #endif | |
301 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); | |
302 | ||
303 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], | |
304 | &sub_crq); | |
305 | if (lpar_rc != H_SUCCESS) | |
306 | goto failure; | |
307 | ||
308 | buffers_added++; | |
309 | adapter->replenish_add_buff_success++; | |
310 | pool->next_free = (pool->next_free + 1) % pool->size; | |
311 | } | |
312 | atomic_add(buffers_added, &pool->available); | |
313 | return; | |
314 | ||
315 | failure: | |
316 | dev_info(dev, "replenish pools failure\n"); | |
317 | pool->free_map[pool->next_free] = index; | |
318 | pool->rx_buff[index].skb = NULL; | |
319 | if (!dma_mapping_error(dev, dma_addr)) | |
320 | dma_unmap_single(dev, dma_addr, pool->buff_size, | |
321 | DMA_FROM_DEVICE); | |
322 | ||
323 | dev_kfree_skb_any(skb); | |
324 | adapter->replenish_add_buff_failure++; | |
325 | atomic_add(buffers_added, &pool->available); | |
f185a49a TF |
326 | |
327 | if (lpar_rc == H_CLOSED) { | |
328 | /* Disable buffer pool replenishment and report carrier off if | |
329 | * queue is closed. Firmware guarantees that a signal will | |
330 | * be sent to the driver, triggering a reset. | |
331 | */ | |
332 | deactivate_rx_pools(adapter); | |
333 | netif_carrier_off(adapter->netdev); | |
334 | } | |
032c5e82 TF |
335 | } |
336 | ||
337 | static void replenish_pools(struct ibmvnic_adapter *adapter) | |
338 | { | |
339 | int i; | |
340 | ||
032c5e82 TF |
341 | adapter->replenish_task_cycles++; |
342 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
343 | i++) { | |
344 | if (adapter->rx_pool[i].active) | |
345 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); | |
346 | } | |
347 | } | |
348 | ||
7bbc27a4 NF |
349 | static void release_stats_token(struct ibmvnic_adapter *adapter) |
350 | { | |
351 | struct device *dev = &adapter->vdev->dev; | |
352 | ||
353 | if (!adapter->stats_token) | |
354 | return; | |
355 | ||
356 | dma_unmap_single(dev, adapter->stats_token, | |
357 | sizeof(struct ibmvnic_statistics), | |
358 | DMA_FROM_DEVICE); | |
359 | adapter->stats_token = 0; | |
360 | } | |
361 | ||
362 | static int init_stats_token(struct ibmvnic_adapter *adapter) | |
363 | { | |
364 | struct device *dev = &adapter->vdev->dev; | |
365 | dma_addr_t stok; | |
366 | ||
367 | stok = dma_map_single(dev, &adapter->stats, | |
368 | sizeof(struct ibmvnic_statistics), | |
369 | DMA_FROM_DEVICE); | |
370 | if (dma_mapping_error(dev, stok)) { | |
371 | dev_err(dev, "Couldn't map stats buffer\n"); | |
372 | return -1; | |
373 | } | |
374 | ||
375 | adapter->stats_token = stok; | |
376 | return 0; | |
377 | } | |
378 | ||
8c0543ad NF |
379 | static int reset_rx_pools(struct ibmvnic_adapter *adapter) |
380 | { | |
381 | struct ibmvnic_rx_pool *rx_pool; | |
382 | int rx_scrqs; | |
f3be0cbc | 383 | int i, j, rc; |
8c0543ad NF |
384 | |
385 | rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
386 | for (i = 0; i < rx_scrqs; i++) { | |
387 | rx_pool = &adapter->rx_pool[i]; | |
388 | ||
f3be0cbc TF |
389 | rc = reset_long_term_buff(adapter, &rx_pool->long_term_buff); |
390 | if (rc) | |
391 | return rc; | |
8c0543ad NF |
392 | |
393 | for (j = 0; j < rx_pool->size; j++) | |
394 | rx_pool->free_map[j] = j; | |
395 | ||
396 | memset(rx_pool->rx_buff, 0, | |
397 | rx_pool->size * sizeof(struct ibmvnic_rx_buff)); | |
398 | ||
399 | atomic_set(&rx_pool->available, 0); | |
400 | rx_pool->next_alloc = 0; | |
401 | rx_pool->next_free = 0; | |
c3e53b9a | 402 | rx_pool->active = 1; |
8c0543ad NF |
403 | } |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
0ffe2cb7 | 408 | static void release_rx_pools(struct ibmvnic_adapter *adapter) |
032c5e82 | 409 | { |
0ffe2cb7 NF |
410 | struct ibmvnic_rx_pool *rx_pool; |
411 | int rx_scrqs; | |
412 | int i, j; | |
032c5e82 | 413 | |
0ffe2cb7 | 414 | if (!adapter->rx_pool) |
032c5e82 TF |
415 | return; |
416 | ||
0ffe2cb7 NF |
417 | rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); |
418 | for (i = 0; i < rx_scrqs; i++) { | |
419 | rx_pool = &adapter->rx_pool[i]; | |
420 | ||
421 | kfree(rx_pool->free_map); | |
422 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
423 | ||
424 | if (!rx_pool->rx_buff) | |
e0ebe942 | 425 | continue; |
0ffe2cb7 NF |
426 | |
427 | for (j = 0; j < rx_pool->size; j++) { | |
428 | if (rx_pool->rx_buff[j].skb) { | |
429 | dev_kfree_skb_any(rx_pool->rx_buff[i].skb); | |
430 | rx_pool->rx_buff[i].skb = NULL; | |
431 | } | |
432 | } | |
433 | ||
434 | kfree(rx_pool->rx_buff); | |
435 | } | |
436 | ||
437 | kfree(adapter->rx_pool); | |
438 | adapter->rx_pool = NULL; | |
439 | } | |
440 | ||
441 | static int init_rx_pools(struct net_device *netdev) | |
442 | { | |
443 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
444 | struct device *dev = &adapter->vdev->dev; | |
445 | struct ibmvnic_rx_pool *rx_pool; | |
446 | int rxadd_subcrqs; | |
447 | u64 *size_array; | |
448 | int i, j; | |
449 | ||
450 | rxadd_subcrqs = | |
451 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
452 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
453 | be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size)); | |
454 | ||
455 | adapter->rx_pool = kcalloc(rxadd_subcrqs, | |
456 | sizeof(struct ibmvnic_rx_pool), | |
457 | GFP_KERNEL); | |
458 | if (!adapter->rx_pool) { | |
459 | dev_err(dev, "Failed to allocate rx pools\n"); | |
460 | return -1; | |
461 | } | |
462 | ||
463 | for (i = 0; i < rxadd_subcrqs; i++) { | |
464 | rx_pool = &adapter->rx_pool[i]; | |
465 | ||
466 | netdev_dbg(adapter->netdev, | |
467 | "Initializing rx_pool %d, %lld buffs, %lld bytes each\n", | |
468 | i, adapter->req_rx_add_entries_per_subcrq, | |
469 | be64_to_cpu(size_array[i])); | |
470 | ||
471 | rx_pool->size = adapter->req_rx_add_entries_per_subcrq; | |
472 | rx_pool->index = i; | |
473 | rx_pool->buff_size = be64_to_cpu(size_array[i]); | |
474 | rx_pool->active = 1; | |
475 | ||
476 | rx_pool->free_map = kcalloc(rx_pool->size, sizeof(int), | |
477 | GFP_KERNEL); | |
478 | if (!rx_pool->free_map) { | |
479 | release_rx_pools(adapter); | |
480 | return -1; | |
032c5e82 | 481 | } |
0ffe2cb7 NF |
482 | |
483 | rx_pool->rx_buff = kcalloc(rx_pool->size, | |
484 | sizeof(struct ibmvnic_rx_buff), | |
485 | GFP_KERNEL); | |
486 | if (!rx_pool->rx_buff) { | |
487 | dev_err(dev, "Couldn't alloc rx buffers\n"); | |
488 | release_rx_pools(adapter); | |
489 | return -1; | |
490 | } | |
491 | ||
492 | if (alloc_long_term_buff(adapter, &rx_pool->long_term_buff, | |
493 | rx_pool->size * rx_pool->buff_size)) { | |
494 | release_rx_pools(adapter); | |
495 | return -1; | |
496 | } | |
497 | ||
498 | for (j = 0; j < rx_pool->size; ++j) | |
499 | rx_pool->free_map[j] = j; | |
500 | ||
501 | atomic_set(&rx_pool->available, 0); | |
502 | rx_pool->next_alloc = 0; | |
503 | rx_pool->next_free = 0; | |
032c5e82 | 504 | } |
0ffe2cb7 NF |
505 | |
506 | return 0; | |
032c5e82 TF |
507 | } |
508 | ||
8c0543ad NF |
509 | static int reset_tx_pools(struct ibmvnic_adapter *adapter) |
510 | { | |
511 | struct ibmvnic_tx_pool *tx_pool; | |
512 | int tx_scrqs; | |
f3be0cbc | 513 | int i, j, rc; |
8c0543ad NF |
514 | |
515 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
516 | for (i = 0; i < tx_scrqs; i++) { | |
517 | tx_pool = &adapter->tx_pool[i]; | |
518 | ||
f3be0cbc TF |
519 | rc = reset_long_term_buff(adapter, &tx_pool->long_term_buff); |
520 | if (rc) | |
521 | return rc; | |
8c0543ad NF |
522 | |
523 | memset(tx_pool->tx_buff, 0, | |
524 | adapter->req_tx_entries_per_subcrq * | |
525 | sizeof(struct ibmvnic_tx_buff)); | |
526 | ||
527 | for (j = 0; j < adapter->req_tx_entries_per_subcrq; j++) | |
528 | tx_pool->free_map[j] = j; | |
529 | ||
530 | tx_pool->consumer_index = 0; | |
531 | tx_pool->producer_index = 0; | |
532 | } | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
c657e32c NF |
537 | static void release_tx_pools(struct ibmvnic_adapter *adapter) |
538 | { | |
539 | struct ibmvnic_tx_pool *tx_pool; | |
540 | int i, tx_scrqs; | |
541 | ||
542 | if (!adapter->tx_pool) | |
543 | return; | |
544 | ||
545 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
546 | for (i = 0; i < tx_scrqs; i++) { | |
547 | tx_pool = &adapter->tx_pool[i]; | |
548 | kfree(tx_pool->tx_buff); | |
549 | free_long_term_buff(adapter, &tx_pool->long_term_buff); | |
550 | kfree(tx_pool->free_map); | |
551 | } | |
552 | ||
553 | kfree(adapter->tx_pool); | |
554 | adapter->tx_pool = NULL; | |
555 | } | |
556 | ||
557 | static int init_tx_pools(struct net_device *netdev) | |
558 | { | |
559 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
560 | struct device *dev = &adapter->vdev->dev; | |
561 | struct ibmvnic_tx_pool *tx_pool; | |
562 | int tx_subcrqs; | |
563 | int i, j; | |
564 | ||
565 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
566 | adapter->tx_pool = kcalloc(tx_subcrqs, | |
567 | sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
568 | if (!adapter->tx_pool) | |
569 | return -1; | |
570 | ||
571 | for (i = 0; i < tx_subcrqs; i++) { | |
572 | tx_pool = &adapter->tx_pool[i]; | |
573 | tx_pool->tx_buff = kcalloc(adapter->req_tx_entries_per_subcrq, | |
574 | sizeof(struct ibmvnic_tx_buff), | |
575 | GFP_KERNEL); | |
576 | if (!tx_pool->tx_buff) { | |
577 | dev_err(dev, "tx pool buffer allocation failed\n"); | |
578 | release_tx_pools(adapter); | |
579 | return -1; | |
580 | } | |
581 | ||
582 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, | |
583 | adapter->req_tx_entries_per_subcrq * | |
584 | adapter->req_mtu)) { | |
585 | release_tx_pools(adapter); | |
586 | return -1; | |
587 | } | |
588 | ||
589 | tx_pool->free_map = kcalloc(adapter->req_tx_entries_per_subcrq, | |
590 | sizeof(int), GFP_KERNEL); | |
591 | if (!tx_pool->free_map) { | |
592 | release_tx_pools(adapter); | |
593 | return -1; | |
594 | } | |
595 | ||
596 | for (j = 0; j < adapter->req_tx_entries_per_subcrq; j++) | |
597 | tx_pool->free_map[j] = j; | |
598 | ||
599 | tx_pool->consumer_index = 0; | |
600 | tx_pool->producer_index = 0; | |
601 | } | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
661a2622 NF |
606 | static void release_error_buffers(struct ibmvnic_adapter *adapter) |
607 | { | |
608 | struct device *dev = &adapter->vdev->dev; | |
609 | struct ibmvnic_error_buff *error_buff, *tmp; | |
610 | unsigned long flags; | |
611 | ||
612 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
613 | list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) { | |
614 | list_del(&error_buff->list); | |
615 | dma_unmap_single(dev, error_buff->dma, error_buff->len, | |
616 | DMA_FROM_DEVICE); | |
617 | kfree(error_buff->buff); | |
618 | kfree(error_buff); | |
619 | } | |
620 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
621 | } | |
622 | ||
d944c3d6 JA |
623 | static void ibmvnic_napi_enable(struct ibmvnic_adapter *adapter) |
624 | { | |
625 | int i; | |
626 | ||
627 | if (adapter->napi_enabled) | |
628 | return; | |
629 | ||
630 | for (i = 0; i < adapter->req_rx_queues; i++) | |
631 | napi_enable(&adapter->napi[i]); | |
632 | ||
633 | adapter->napi_enabled = true; | |
634 | } | |
635 | ||
636 | static void ibmvnic_napi_disable(struct ibmvnic_adapter *adapter) | |
637 | { | |
638 | int i; | |
639 | ||
640 | if (!adapter->napi_enabled) | |
641 | return; | |
642 | ||
643 | for (i = 0; i < adapter->req_rx_queues; i++) | |
644 | napi_disable(&adapter->napi[i]); | |
645 | ||
646 | adapter->napi_enabled = false; | |
647 | } | |
648 | ||
a57a5d25 | 649 | static int ibmvnic_login(struct net_device *netdev) |
032c5e82 TF |
650 | { |
651 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
bd0b6723 | 652 | unsigned long timeout = msecs_to_jiffies(30000); |
032c5e82 | 653 | struct device *dev = &adapter->vdev->dev; |
032c5e82 | 654 | |
bd0b6723 JA |
655 | do { |
656 | if (adapter->renegotiate) { | |
657 | adapter->renegotiate = false; | |
b510888f | 658 | release_sub_crqs(adapter); |
bd0b6723 JA |
659 | |
660 | reinit_completion(&adapter->init_done); | |
661 | send_cap_queries(adapter); | |
662 | if (!wait_for_completion_timeout(&adapter->init_done, | |
663 | timeout)) { | |
664 | dev_err(dev, "Capabilities query timeout\n"); | |
665 | return -1; | |
666 | } | |
667 | } | |
668 | ||
669 | reinit_completion(&adapter->init_done); | |
670 | send_login(adapter); | |
671 | if (!wait_for_completion_timeout(&adapter->init_done, | |
672 | timeout)) { | |
673 | dev_err(dev, "Login timeout\n"); | |
674 | return -1; | |
675 | } | |
676 | } while (adapter->renegotiate); | |
677 | ||
a57a5d25 JA |
678 | return 0; |
679 | } | |
680 | ||
1b8955ee NF |
681 | static void release_resources(struct ibmvnic_adapter *adapter) |
682 | { | |
c7bac00b NF |
683 | int i; |
684 | ||
1b8955ee NF |
685 | release_tx_pools(adapter); |
686 | release_rx_pools(adapter); | |
687 | ||
1b8955ee | 688 | release_stats_token(adapter); |
661a2622 | 689 | release_error_buffers(adapter); |
c7bac00b NF |
690 | |
691 | if (adapter->napi) { | |
692 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
693 | if (&adapter->napi[i]) | |
694 | netif_napi_del(&adapter->napi[i]); | |
695 | } | |
696 | } | |
1b8955ee NF |
697 | } |
698 | ||
53da09e9 NF |
699 | static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state) |
700 | { | |
701 | struct net_device *netdev = adapter->netdev; | |
702 | unsigned long timeout = msecs_to_jiffies(30000); | |
703 | union ibmvnic_crq crq; | |
704 | bool resend; | |
705 | int rc; | |
706 | ||
53da09e9 NF |
707 | netdev_err(netdev, "setting link state %d\n", link_state); |
708 | memset(&crq, 0, sizeof(crq)); | |
709 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
710 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
711 | crq.logical_link_state.link_state = link_state; | |
712 | ||
713 | do { | |
714 | resend = false; | |
715 | ||
716 | reinit_completion(&adapter->init_done); | |
717 | rc = ibmvnic_send_crq(adapter, &crq); | |
718 | if (rc) { | |
719 | netdev_err(netdev, "Failed to set link state\n"); | |
720 | return rc; | |
721 | } | |
722 | ||
723 | if (!wait_for_completion_timeout(&adapter->init_done, | |
724 | timeout)) { | |
725 | netdev_err(netdev, "timeout setting link state\n"); | |
726 | return -1; | |
727 | } | |
728 | ||
729 | if (adapter->init_done_rc == 1) { | |
730 | /* Partuial success, delay and re-send */ | |
731 | mdelay(1000); | |
732 | resend = true; | |
733 | } | |
734 | } while (resend); | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
7f3c6e6b TF |
739 | static int set_real_num_queues(struct net_device *netdev) |
740 | { | |
741 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
742 | int rc; | |
743 | ||
744 | rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues); | |
745 | if (rc) { | |
746 | netdev_err(netdev, "failed to set the number of tx queues\n"); | |
747 | return rc; | |
748 | } | |
749 | ||
750 | rc = netif_set_real_num_rx_queues(netdev, adapter->req_rx_queues); | |
751 | if (rc) | |
752 | netdev_err(netdev, "failed to set the number of rx queues\n"); | |
753 | ||
754 | return rc; | |
755 | } | |
756 | ||
bfc32f29 | 757 | static int init_resources(struct ibmvnic_adapter *adapter) |
a57a5d25 | 758 | { |
bfc32f29 NF |
759 | struct net_device *netdev = adapter->netdev; |
760 | int i, rc; | |
a57a5d25 | 761 | |
7f3c6e6b TF |
762 | rc = set_real_num_queues(netdev); |
763 | if (rc) | |
764 | return rc; | |
bd0b6723 | 765 | |
5d5e84eb NF |
766 | rc = init_stats_token(adapter); |
767 | if (rc) | |
768 | return rc; | |
769 | ||
032c5e82 TF |
770 | adapter->map_id = 1; |
771 | adapter->napi = kcalloc(adapter->req_rx_queues, | |
772 | sizeof(struct napi_struct), GFP_KERNEL); | |
773 | if (!adapter->napi) | |
bfc32f29 NF |
774 | return -ENOMEM; |
775 | ||
032c5e82 TF |
776 | for (i = 0; i < adapter->req_rx_queues; i++) { |
777 | netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll, | |
778 | NAPI_POLL_WEIGHT); | |
032c5e82 | 779 | } |
032c5e82 | 780 | |
032c5e82 | 781 | send_map_query(adapter); |
0ffe2cb7 NF |
782 | |
783 | rc = init_rx_pools(netdev); | |
784 | if (rc) | |
bfc32f29 | 785 | return rc; |
032c5e82 | 786 | |
c657e32c | 787 | rc = init_tx_pools(netdev); |
bfc32f29 NF |
788 | return rc; |
789 | } | |
790 | ||
ed651a10 | 791 | static int __ibmvnic_open(struct net_device *netdev) |
bfc32f29 NF |
792 | { |
793 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
ed651a10 | 794 | enum vnic_state prev_state = adapter->state; |
bfc32f29 NF |
795 | int i, rc; |
796 | ||
90c8014c | 797 | adapter->state = VNIC_OPENING; |
032c5e82 | 798 | replenish_pools(adapter); |
d944c3d6 | 799 | ibmvnic_napi_enable(adapter); |
bfc32f29 | 800 | |
032c5e82 TF |
801 | /* We're ready to receive frames, enable the sub-crq interrupts and |
802 | * set the logical link state to up | |
803 | */ | |
ed651a10 NF |
804 | for (i = 0; i < adapter->req_rx_queues; i++) { |
805 | if (prev_state == VNIC_CLOSED) | |
806 | enable_irq(adapter->rx_scrq[i]->irq); | |
807 | else | |
808 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); | |
809 | } | |
032c5e82 | 810 | |
ed651a10 NF |
811 | for (i = 0; i < adapter->req_tx_queues; i++) { |
812 | if (prev_state == VNIC_CLOSED) | |
813 | enable_irq(adapter->tx_scrq[i]->irq); | |
814 | else | |
815 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); | |
816 | } | |
032c5e82 | 817 | |
53da09e9 | 818 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_UP); |
bfc32f29 NF |
819 | if (rc) { |
820 | for (i = 0; i < adapter->req_rx_queues; i++) | |
821 | napi_disable(&adapter->napi[i]); | |
822 | release_resources(adapter); | |
ed651a10 | 823 | return rc; |
bfc32f29 | 824 | } |
032c5e82 | 825 | |
ed651a10 NF |
826 | netif_tx_start_all_queues(netdev); |
827 | ||
828 | if (prev_state == VNIC_CLOSED) { | |
829 | for (i = 0; i < adapter->req_rx_queues; i++) | |
830 | napi_schedule(&adapter->napi[i]); | |
831 | } | |
832 | ||
833 | adapter->state = VNIC_OPEN; | |
834 | return rc; | |
835 | } | |
836 | ||
837 | static int ibmvnic_open(struct net_device *netdev) | |
838 | { | |
839 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
840 | int rc; | |
841 | ||
842 | mutex_lock(&adapter->reset_lock); | |
843 | ||
844 | if (adapter->state != VNIC_CLOSED) { | |
845 | rc = ibmvnic_login(netdev); | |
846 | if (rc) { | |
847 | mutex_unlock(&adapter->reset_lock); | |
848 | return rc; | |
849 | } | |
850 | ||
851 | rc = init_resources(adapter); | |
852 | if (rc) { | |
853 | netdev_err(netdev, "failed to initialize resources\n"); | |
854 | release_resources(adapter); | |
855 | mutex_unlock(&adapter->reset_lock); | |
856 | return rc; | |
857 | } | |
858 | } | |
859 | ||
860 | rc = __ibmvnic_open(netdev); | |
861 | mutex_unlock(&adapter->reset_lock); | |
862 | ||
bfc32f29 | 863 | return rc; |
032c5e82 TF |
864 | } |
865 | ||
b41b83e9 NF |
866 | static void clean_tx_pools(struct ibmvnic_adapter *adapter) |
867 | { | |
868 | struct ibmvnic_tx_pool *tx_pool; | |
869 | u64 tx_entries; | |
870 | int tx_scrqs; | |
871 | int i, j; | |
872 | ||
873 | if (!adapter->tx_pool) | |
874 | return; | |
875 | ||
876 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
877 | tx_entries = adapter->req_tx_entries_per_subcrq; | |
878 | ||
879 | /* Free any remaining skbs in the tx buffer pools */ | |
880 | for (i = 0; i < tx_scrqs; i++) { | |
881 | tx_pool = &adapter->tx_pool[i]; | |
882 | if (!tx_pool) | |
883 | continue; | |
884 | ||
885 | for (j = 0; j < tx_entries; j++) { | |
886 | if (tx_pool->tx_buff[j].skb) { | |
887 | dev_kfree_skb_any(tx_pool->tx_buff[j].skb); | |
888 | tx_pool->tx_buff[j].skb = NULL; | |
889 | } | |
890 | } | |
891 | } | |
892 | } | |
893 | ||
ed651a10 | 894 | static int __ibmvnic_close(struct net_device *netdev) |
ea5509f5 JA |
895 | { |
896 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
53da09e9 | 897 | int rc = 0; |
ea5509f5 JA |
898 | int i; |
899 | ||
90c8014c | 900 | adapter->state = VNIC_CLOSING; |
4c2687a5 TF |
901 | |
902 | /* ensure that transmissions are stopped if called by do_reset */ | |
903 | if (adapter->resetting) | |
904 | netif_tx_disable(netdev); | |
905 | else | |
906 | netif_tx_stop_all_queues(netdev); | |
907 | ||
d944c3d6 | 908 | ibmvnic_napi_disable(adapter); |
46293b94 NF |
909 | |
910 | if (adapter->tx_scrq) { | |
911 | for (i = 0; i < adapter->req_tx_queues; i++) | |
912 | if (adapter->tx_scrq[i]->irq) | |
913 | disable_irq(adapter->tx_scrq[i]->irq); | |
914 | } | |
915 | ||
53da09e9 | 916 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN); |
46293b94 NF |
917 | if (rc) |
918 | return rc; | |
919 | ||
920 | if (adapter->rx_scrq) { | |
921 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
922 | int retries = 10; | |
923 | ||
924 | while (pending_scrq(adapter, adapter->rx_scrq[i])) { | |
925 | retries--; | |
926 | mdelay(100); | |
927 | ||
928 | if (retries == 0) | |
929 | break; | |
930 | } | |
931 | ||
932 | if (adapter->rx_scrq[i]->irq) | |
933 | disable_irq(adapter->rx_scrq[i]->irq); | |
934 | } | |
935 | } | |
ea5509f5 | 936 | |
10f76215 | 937 | clean_tx_pools(adapter); |
90c8014c | 938 | adapter->state = VNIC_CLOSED; |
53da09e9 | 939 | return rc; |
032c5e82 TF |
940 | } |
941 | ||
ed651a10 NF |
942 | static int ibmvnic_close(struct net_device *netdev) |
943 | { | |
944 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
945 | int rc; | |
946 | ||
947 | mutex_lock(&adapter->reset_lock); | |
948 | rc = __ibmvnic_close(netdev); | |
949 | mutex_unlock(&adapter->reset_lock); | |
950 | ||
951 | return rc; | |
952 | } | |
953 | ||
ad7775dc TF |
954 | /** |
955 | * build_hdr_data - creates L2/L3/L4 header data buffer | |
956 | * @hdr_field - bitfield determining needed headers | |
957 | * @skb - socket buffer | |
958 | * @hdr_len - array of header lengths | |
959 | * @tot_len - total length of data | |
960 | * | |
961 | * Reads hdr_field to determine which headers are needed by firmware. | |
962 | * Builds a buffer containing these headers. Saves individual header | |
963 | * lengths and total buffer length to be used to build descriptors. | |
964 | */ | |
965 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, | |
966 | int *hdr_len, u8 *hdr_data) | |
967 | { | |
968 | int len = 0; | |
969 | u8 *hdr; | |
970 | ||
971 | hdr_len[0] = sizeof(struct ethhdr); | |
972 | ||
973 | if (skb->protocol == htons(ETH_P_IP)) { | |
974 | hdr_len[1] = ip_hdr(skb)->ihl * 4; | |
975 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
976 | hdr_len[2] = tcp_hdrlen(skb); | |
977 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
978 | hdr_len[2] = sizeof(struct udphdr); | |
979 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
980 | hdr_len[1] = sizeof(struct ipv6hdr); | |
981 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
982 | hdr_len[2] = tcp_hdrlen(skb); | |
983 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
984 | hdr_len[2] = sizeof(struct udphdr); | |
985 | } | |
986 | ||
987 | memset(hdr_data, 0, 120); | |
988 | if ((hdr_field >> 6) & 1) { | |
989 | hdr = skb_mac_header(skb); | |
990 | memcpy(hdr_data, hdr, hdr_len[0]); | |
991 | len += hdr_len[0]; | |
992 | } | |
993 | ||
994 | if ((hdr_field >> 5) & 1) { | |
995 | hdr = skb_network_header(skb); | |
996 | memcpy(hdr_data + len, hdr, hdr_len[1]); | |
997 | len += hdr_len[1]; | |
998 | } | |
999 | ||
1000 | if ((hdr_field >> 4) & 1) { | |
1001 | hdr = skb_transport_header(skb); | |
1002 | memcpy(hdr_data + len, hdr, hdr_len[2]); | |
1003 | len += hdr_len[2]; | |
1004 | } | |
1005 | return len; | |
1006 | } | |
1007 | ||
1008 | /** | |
1009 | * create_hdr_descs - create header and header extension descriptors | |
1010 | * @hdr_field - bitfield determining needed headers | |
1011 | * @data - buffer containing header data | |
1012 | * @len - length of data buffer | |
1013 | * @hdr_len - array of individual header lengths | |
1014 | * @scrq_arr - descriptor array | |
1015 | * | |
1016 | * Creates header and, if needed, header extension descriptors and | |
1017 | * places them in a descriptor array, scrq_arr | |
1018 | */ | |
1019 | ||
1020 | static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, | |
1021 | union sub_crq *scrq_arr) | |
1022 | { | |
1023 | union sub_crq hdr_desc; | |
1024 | int tmp_len = len; | |
1025 | u8 *data, *cur; | |
1026 | int tmp; | |
1027 | ||
1028 | while (tmp_len > 0) { | |
1029 | cur = hdr_data + len - tmp_len; | |
1030 | ||
1031 | memset(&hdr_desc, 0, sizeof(hdr_desc)); | |
1032 | if (cur != hdr_data) { | |
1033 | data = hdr_desc.hdr_ext.data; | |
1034 | tmp = tmp_len > 29 ? 29 : tmp_len; | |
1035 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; | |
1036 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; | |
1037 | hdr_desc.hdr_ext.len = tmp; | |
1038 | } else { | |
1039 | data = hdr_desc.hdr.data; | |
1040 | tmp = tmp_len > 24 ? 24 : tmp_len; | |
1041 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; | |
1042 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; | |
1043 | hdr_desc.hdr.len = tmp; | |
1044 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; | |
1045 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); | |
1046 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; | |
1047 | hdr_desc.hdr.flag = hdr_field << 1; | |
1048 | } | |
1049 | memcpy(data, cur, tmp); | |
1050 | tmp_len -= tmp; | |
1051 | *scrq_arr = hdr_desc; | |
1052 | scrq_arr++; | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | /** | |
1057 | * build_hdr_descs_arr - build a header descriptor array | |
1058 | * @skb - socket buffer | |
1059 | * @num_entries - number of descriptors to be sent | |
1060 | * @subcrq - first TX descriptor | |
1061 | * @hdr_field - bit field determining which headers will be sent | |
1062 | * | |
1063 | * This function will build a TX descriptor array with applicable | |
1064 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. | |
1065 | */ | |
1066 | ||
1067 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, | |
1068 | int *num_entries, u8 hdr_field) | |
1069 | { | |
1070 | int hdr_len[3] = {0, 0, 0}; | |
1071 | int tot_len, len; | |
1072 | u8 *hdr_data = txbuff->hdr_data; | |
1073 | ||
1074 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, | |
1075 | txbuff->hdr_data); | |
1076 | len = tot_len; | |
1077 | len -= 24; | |
1078 | if (len > 0) | |
1079 | num_entries += len % 29 ? len / 29 + 1 : len / 29; | |
1080 | create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, | |
1081 | txbuff->indir_arr + 1); | |
1082 | } | |
1083 | ||
032c5e82 TF |
1084 | static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
1085 | { | |
1086 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1087 | int queue_num = skb_get_queue_mapping(skb); | |
ad7775dc | 1088 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
032c5e82 TF |
1089 | struct device *dev = &adapter->vdev->dev; |
1090 | struct ibmvnic_tx_buff *tx_buff = NULL; | |
142c0ac4 | 1091 | struct ibmvnic_sub_crq_queue *tx_scrq; |
032c5e82 TF |
1092 | struct ibmvnic_tx_pool *tx_pool; |
1093 | unsigned int tx_send_failed = 0; | |
1094 | unsigned int tx_map_failed = 0; | |
1095 | unsigned int tx_dropped = 0; | |
1096 | unsigned int tx_packets = 0; | |
1097 | unsigned int tx_bytes = 0; | |
1098 | dma_addr_t data_dma_addr; | |
1099 | struct netdev_queue *txq; | |
032c5e82 TF |
1100 | unsigned long lpar_rc; |
1101 | union sub_crq tx_crq; | |
1102 | unsigned int offset; | |
ad7775dc | 1103 | int num_entries = 1; |
032c5e82 TF |
1104 | unsigned char *dst; |
1105 | u64 *handle_array; | |
1106 | int index = 0; | |
1107 | int ret = 0; | |
1108 | ||
ed651a10 | 1109 | if (adapter->resetting) { |
7f5b0308 TF |
1110 | if (!netif_subqueue_stopped(netdev, skb)) |
1111 | netif_stop_subqueue(netdev, queue_num); | |
1112 | dev_kfree_skb_any(skb); | |
1113 | ||
032c5e82 TF |
1114 | tx_send_failed++; |
1115 | tx_dropped++; | |
7f5b0308 | 1116 | ret = NETDEV_TX_OK; |
032c5e82 TF |
1117 | goto out; |
1118 | } | |
1119 | ||
161b8a81 NF |
1120 | tx_pool = &adapter->tx_pool[queue_num]; |
1121 | tx_scrq = adapter->tx_scrq[queue_num]; | |
1122 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); | |
1123 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
1124 | be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs)); | |
1125 | ||
032c5e82 TF |
1126 | index = tx_pool->free_map[tx_pool->consumer_index]; |
1127 | offset = index * adapter->req_mtu; | |
1128 | dst = tx_pool->long_term_buff.buff + offset; | |
1129 | memset(dst, 0, adapter->req_mtu); | |
1130 | skb_copy_from_linear_data(skb, dst, skb->len); | |
1131 | data_dma_addr = tx_pool->long_term_buff.addr + offset; | |
1132 | ||
1133 | tx_pool->consumer_index = | |
1134 | (tx_pool->consumer_index + 1) % | |
068d9f90 | 1135 | adapter->req_tx_entries_per_subcrq; |
032c5e82 TF |
1136 | |
1137 | tx_buff = &tx_pool->tx_buff[index]; | |
1138 | tx_buff->skb = skb; | |
1139 | tx_buff->data_dma[0] = data_dma_addr; | |
1140 | tx_buff->data_len[0] = skb->len; | |
1141 | tx_buff->index = index; | |
1142 | tx_buff->pool_index = queue_num; | |
1143 | tx_buff->last_frag = true; | |
032c5e82 TF |
1144 | |
1145 | memset(&tx_crq, 0, sizeof(tx_crq)); | |
1146 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; | |
1147 | tx_crq.v1.type = IBMVNIC_TX_DESC; | |
1148 | tx_crq.v1.n_crq_elem = 1; | |
1149 | tx_crq.v1.n_sge = 1; | |
1150 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; | |
1151 | tx_crq.v1.correlator = cpu_to_be32(index); | |
1152 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); | |
1153 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); | |
1154 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); | |
1155 | ||
1156 | if (adapter->vlan_header_insertion) { | |
1157 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; | |
1158 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); | |
1159 | } | |
1160 | ||
1161 | if (skb->protocol == htons(ETH_P_IP)) { | |
1162 | if (ip_hdr(skb)->version == 4) | |
1163 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; | |
1164 | else if (ip_hdr(skb)->version == 6) | |
1165 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; | |
1166 | ||
1167 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
1168 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; | |
1169 | else if (ip_hdr(skb)->protocol != IPPROTO_TCP) | |
1170 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; | |
1171 | } | |
1172 | ||
ad7775dc | 1173 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
032c5e82 | 1174 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
ad7775dc TF |
1175 | hdrs += 2; |
1176 | } | |
1177 | /* determine if l2/3/4 headers are sent to firmware */ | |
1178 | if ((*hdrs >> 7) & 1 && | |
1179 | (skb->protocol == htons(ETH_P_IP) || | |
1180 | skb->protocol == htons(ETH_P_IPV6))) { | |
1181 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); | |
1182 | tx_crq.v1.n_crq_elem = num_entries; | |
1183 | tx_buff->indir_arr[0] = tx_crq; | |
1184 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, | |
1185 | sizeof(tx_buff->indir_arr), | |
1186 | DMA_TO_DEVICE); | |
1187 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { | |
7f5b0308 TF |
1188 | dev_kfree_skb_any(skb); |
1189 | tx_buff->skb = NULL; | |
ad7775dc TF |
1190 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
1191 | dev_err(dev, "tx: unable to map descriptor array\n"); | |
1192 | tx_map_failed++; | |
1193 | tx_dropped++; | |
7f5b0308 | 1194 | ret = NETDEV_TX_OK; |
ad7775dc TF |
1195 | goto out; |
1196 | } | |
498cd8e4 | 1197 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
ad7775dc TF |
1198 | (u64)tx_buff->indir_dma, |
1199 | (u64)num_entries); | |
1200 | } else { | |
498cd8e4 JA |
1201 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
1202 | &tx_crq); | |
ad7775dc | 1203 | } |
032c5e82 TF |
1204 | if (lpar_rc != H_SUCCESS) { |
1205 | dev_err(dev, "tx failed with code %ld\n", lpar_rc); | |
1206 | ||
1207 | if (tx_pool->consumer_index == 0) | |
1208 | tx_pool->consumer_index = | |
068d9f90 | 1209 | adapter->req_tx_entries_per_subcrq - 1; |
032c5e82 TF |
1210 | else |
1211 | tx_pool->consumer_index--; | |
1212 | ||
7f5b0308 TF |
1213 | dev_kfree_skb_any(skb); |
1214 | tx_buff->skb = NULL; | |
1215 | ||
b8c80b84 TF |
1216 | if (lpar_rc == H_CLOSED) { |
1217 | /* Disable TX and report carrier off if queue is closed. | |
1218 | * Firmware guarantees that a signal will be sent to the | |
1219 | * driver, triggering a reset or some other action. | |
1220 | */ | |
1221 | netif_tx_stop_all_queues(netdev); | |
1222 | netif_carrier_off(netdev); | |
1223 | } | |
7f5b0308 | 1224 | |
032c5e82 TF |
1225 | tx_send_failed++; |
1226 | tx_dropped++; | |
7f5b0308 | 1227 | ret = NETDEV_TX_OK; |
032c5e82 TF |
1228 | goto out; |
1229 | } | |
142c0ac4 | 1230 | |
58c8c0c0 BK |
1231 | if (atomic_inc_return(&tx_scrq->used) |
1232 | >= adapter->req_tx_entries_per_subcrq) { | |
142c0ac4 TF |
1233 | netdev_info(netdev, "Stopping queue %d\n", queue_num); |
1234 | netif_stop_subqueue(netdev, queue_num); | |
1235 | } | |
1236 | ||
032c5e82 TF |
1237 | tx_packets++; |
1238 | tx_bytes += skb->len; | |
1239 | txq->trans_start = jiffies; | |
1240 | ret = NETDEV_TX_OK; | |
1241 | ||
1242 | out: | |
1243 | netdev->stats.tx_dropped += tx_dropped; | |
1244 | netdev->stats.tx_bytes += tx_bytes; | |
1245 | netdev->stats.tx_packets += tx_packets; | |
1246 | adapter->tx_send_failed += tx_send_failed; | |
1247 | adapter->tx_map_failed += tx_map_failed; | |
1248 | ||
1249 | return ret; | |
1250 | } | |
1251 | ||
1252 | static void ibmvnic_set_multi(struct net_device *netdev) | |
1253 | { | |
1254 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1255 | struct netdev_hw_addr *ha; | |
1256 | union ibmvnic_crq crq; | |
1257 | ||
1258 | memset(&crq, 0, sizeof(crq)); | |
1259 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
1260 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
1261 | ||
1262 | if (netdev->flags & IFF_PROMISC) { | |
1263 | if (!adapter->promisc_supported) | |
1264 | return; | |
1265 | } else { | |
1266 | if (netdev->flags & IFF_ALLMULTI) { | |
1267 | /* Accept all multicast */ | |
1268 | memset(&crq, 0, sizeof(crq)); | |
1269 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1270 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1271 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; | |
1272 | ibmvnic_send_crq(adapter, &crq); | |
1273 | } else if (netdev_mc_empty(netdev)) { | |
1274 | /* Reject all multicast */ | |
1275 | memset(&crq, 0, sizeof(crq)); | |
1276 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1277 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1278 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; | |
1279 | ibmvnic_send_crq(adapter, &crq); | |
1280 | } else { | |
1281 | /* Accept one or more multicast(s) */ | |
1282 | netdev_for_each_mc_addr(ha, netdev) { | |
1283 | memset(&crq, 0, sizeof(crq)); | |
1284 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1285 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1286 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; | |
1287 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], | |
1288 | ha->addr); | |
1289 | ibmvnic_send_crq(adapter, &crq); | |
1290 | } | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) | |
1296 | { | |
1297 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1298 | struct sockaddr *addr = p; | |
1299 | union ibmvnic_crq crq; | |
1300 | ||
1301 | if (!is_valid_ether_addr(addr->sa_data)) | |
1302 | return -EADDRNOTAVAIL; | |
1303 | ||
1304 | memset(&crq, 0, sizeof(crq)); | |
1305 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; | |
1306 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; | |
1307 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); | |
1308 | ibmvnic_send_crq(adapter, &crq); | |
1309 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ | |
1310 | return 0; | |
1311 | } | |
1312 | ||
ed651a10 NF |
1313 | /** |
1314 | * do_reset returns zero if we are able to keep processing reset events, or | |
1315 | * non-zero if we hit a fatal error and must halt. | |
1316 | */ | |
1317 | static int do_reset(struct ibmvnic_adapter *adapter, | |
1318 | struct ibmvnic_rwi *rwi, u32 reset_state) | |
032c5e82 | 1319 | { |
ed651a10 NF |
1320 | struct net_device *netdev = adapter->netdev; |
1321 | int i, rc; | |
1322 | ||
1323 | netif_carrier_off(netdev); | |
1324 | adapter->reset_reason = rwi->reset_reason; | |
1325 | ||
1326 | if (rwi->reset_reason == VNIC_RESET_MOBILITY) { | |
1327 | rc = ibmvnic_reenable_crq_queue(adapter); | |
1328 | if (rc) | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | rc = __ibmvnic_close(netdev); | |
1333 | if (rc) | |
1334 | return rc; | |
1335 | ||
8cb31cfc JA |
1336 | if (adapter->reset_reason != VNIC_RESET_NON_FATAL) { |
1337 | /* remove the closed state so when we call open it appears | |
1338 | * we are coming from the probed state. | |
1339 | */ | |
1340 | adapter->state = VNIC_PROBED; | |
032c5e82 | 1341 | |
8cb31cfc JA |
1342 | rc = ibmvnic_init(adapter); |
1343 | if (rc) | |
1344 | return 0; | |
ed651a10 | 1345 | |
8cb31cfc JA |
1346 | /* If the adapter was in PROBE state prior to the reset, |
1347 | * exit here. | |
1348 | */ | |
1349 | if (reset_state == VNIC_PROBED) | |
1350 | return 0; | |
ed651a10 | 1351 | |
8cb31cfc JA |
1352 | rc = ibmvnic_login(netdev); |
1353 | if (rc) { | |
1354 | adapter->state = VNIC_PROBED; | |
1355 | return 0; | |
1356 | } | |
ed651a10 | 1357 | |
8c0543ad NF |
1358 | rc = reset_tx_pools(adapter); |
1359 | if (rc) | |
1360 | return rc; | |
1361 | ||
1362 | rc = reset_rx_pools(adapter); | |
8cb31cfc JA |
1363 | if (rc) |
1364 | return rc; | |
ed651a10 | 1365 | |
8cb31cfc JA |
1366 | if (reset_state == VNIC_CLOSED) |
1367 | return 0; | |
1368 | } | |
ed651a10 NF |
1369 | |
1370 | rc = __ibmvnic_open(netdev); | |
1371 | if (rc) { | |
1372 | if (list_empty(&adapter->rwi_list)) | |
1373 | adapter->state = VNIC_CLOSED; | |
1374 | else | |
1375 | adapter->state = reset_state; | |
1376 | ||
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | netif_carrier_on(netdev); | |
1381 | ||
1382 | /* kick napi */ | |
1383 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1384 | napi_schedule(&adapter->napi[i]); | |
1385 | ||
61d3e1d9 NF |
1386 | if (adapter->reset_reason != VNIC_RESET_FAILOVER) |
1387 | netdev_notify_peers(netdev); | |
1388 | ||
ed651a10 NF |
1389 | return 0; |
1390 | } | |
1391 | ||
1392 | static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter) | |
1393 | { | |
1394 | struct ibmvnic_rwi *rwi; | |
1395 | ||
1396 | mutex_lock(&adapter->rwi_lock); | |
1397 | ||
1398 | if (!list_empty(&adapter->rwi_list)) { | |
1399 | rwi = list_first_entry(&adapter->rwi_list, struct ibmvnic_rwi, | |
1400 | list); | |
1401 | list_del(&rwi->list); | |
1402 | } else { | |
1403 | rwi = NULL; | |
1404 | } | |
1405 | ||
1406 | mutex_unlock(&adapter->rwi_lock); | |
1407 | return rwi; | |
1408 | } | |
1409 | ||
1410 | static void free_all_rwi(struct ibmvnic_adapter *adapter) | |
1411 | { | |
1412 | struct ibmvnic_rwi *rwi; | |
1413 | ||
1414 | rwi = get_next_rwi(adapter); | |
1415 | while (rwi) { | |
1416 | kfree(rwi); | |
1417 | rwi = get_next_rwi(adapter); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | static void __ibmvnic_reset(struct work_struct *work) | |
1422 | { | |
1423 | struct ibmvnic_rwi *rwi; | |
1424 | struct ibmvnic_adapter *adapter; | |
1425 | struct net_device *netdev; | |
1426 | u32 reset_state; | |
1427 | int rc; | |
1428 | ||
1429 | adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset); | |
1430 | netdev = adapter->netdev; | |
1431 | ||
1432 | mutex_lock(&adapter->reset_lock); | |
1433 | adapter->resetting = true; | |
1434 | reset_state = adapter->state; | |
1435 | ||
1436 | rwi = get_next_rwi(adapter); | |
1437 | while (rwi) { | |
1438 | rc = do_reset(adapter, rwi, reset_state); | |
1439 | kfree(rwi); | |
1440 | if (rc) | |
1441 | break; | |
1442 | ||
1443 | rwi = get_next_rwi(adapter); | |
1444 | } | |
1445 | ||
1446 | if (rc) { | |
1447 | free_all_rwi(adapter); | |
6d0af07d | 1448 | mutex_unlock(&adapter->reset_lock); |
ed651a10 NF |
1449 | return; |
1450 | } | |
1451 | ||
1452 | adapter->resetting = false; | |
1453 | mutex_unlock(&adapter->reset_lock); | |
1454 | } | |
1455 | ||
1456 | static void ibmvnic_reset(struct ibmvnic_adapter *adapter, | |
1457 | enum ibmvnic_reset_reason reason) | |
1458 | { | |
1459 | struct ibmvnic_rwi *rwi, *tmp; | |
1460 | struct net_device *netdev = adapter->netdev; | |
1461 | struct list_head *entry; | |
1462 | ||
1463 | if (adapter->state == VNIC_REMOVING || | |
1464 | adapter->state == VNIC_REMOVED) { | |
1465 | netdev_dbg(netdev, "Adapter removing, skipping reset\n"); | |
1466 | return; | |
1467 | } | |
1468 | ||
6a2fb0e9 NF |
1469 | if (adapter->state == VNIC_PROBING) { |
1470 | netdev_warn(netdev, "Adapter reset during probe\n"); | |
1471 | adapter->init_done_rc = EAGAIN; | |
1472 | return; | |
1473 | } | |
1474 | ||
ed651a10 NF |
1475 | mutex_lock(&adapter->rwi_lock); |
1476 | ||
1477 | list_for_each(entry, &adapter->rwi_list) { | |
1478 | tmp = list_entry(entry, struct ibmvnic_rwi, list); | |
1479 | if (tmp->reset_reason == reason) { | |
1480 | netdev_err(netdev, "Matching reset found, skipping\n"); | |
1481 | mutex_unlock(&adapter->rwi_lock); | |
1482 | return; | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | rwi = kzalloc(sizeof(*rwi), GFP_KERNEL); | |
1487 | if (!rwi) { | |
1488 | mutex_unlock(&adapter->rwi_lock); | |
1489 | ibmvnic_close(netdev); | |
1490 | return; | |
1491 | } | |
1492 | ||
1493 | rwi->reset_reason = reason; | |
1494 | list_add_tail(&rwi->list, &adapter->rwi_list); | |
1495 | mutex_unlock(&adapter->rwi_lock); | |
1496 | schedule_work(&adapter->ibmvnic_reset); | |
1497 | } | |
1498 | ||
1499 | static void ibmvnic_tx_timeout(struct net_device *dev) | |
1500 | { | |
1501 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1502 | ||
1503 | ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT); | |
032c5e82 TF |
1504 | } |
1505 | ||
1506 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, | |
1507 | struct ibmvnic_rx_buff *rx_buff) | |
1508 | { | |
1509 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; | |
1510 | ||
1511 | rx_buff->skb = NULL; | |
1512 | ||
1513 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); | |
1514 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; | |
1515 | ||
1516 | atomic_dec(&pool->available); | |
1517 | } | |
1518 | ||
1519 | static int ibmvnic_poll(struct napi_struct *napi, int budget) | |
1520 | { | |
1521 | struct net_device *netdev = napi->dev; | |
1522 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1523 | int scrq_num = (int)(napi - adapter->napi); | |
1524 | int frames_processed = 0; | |
152ce47d | 1525 | |
032c5e82 TF |
1526 | restart_poll: |
1527 | while (frames_processed < budget) { | |
1528 | struct sk_buff *skb; | |
1529 | struct ibmvnic_rx_buff *rx_buff; | |
1530 | union sub_crq *next; | |
1531 | u32 length; | |
1532 | u16 offset; | |
1533 | u8 flags = 0; | |
1534 | ||
21ecba6c TF |
1535 | if (unlikely(adapter->resetting)) { |
1536 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
1537 | napi_complete_done(napi, frames_processed); | |
1538 | return frames_processed; | |
1539 | } | |
1540 | ||
032c5e82 TF |
1541 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) |
1542 | break; | |
1543 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); | |
1544 | rx_buff = | |
1545 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> | |
1546 | rx_comp.correlator); | |
1547 | /* do error checking */ | |
1548 | if (next->rx_comp.rc) { | |
1549 | netdev_err(netdev, "rx error %x\n", next->rx_comp.rc); | |
1550 | /* free the entry */ | |
1551 | next->rx_comp.first = 0; | |
1552 | remove_buff_from_pool(adapter, rx_buff); | |
ca05e316 | 1553 | continue; |
032c5e82 TF |
1554 | } |
1555 | ||
1556 | length = be32_to_cpu(next->rx_comp.len); | |
1557 | offset = be16_to_cpu(next->rx_comp.off_frame_data); | |
1558 | flags = next->rx_comp.flags; | |
1559 | skb = rx_buff->skb; | |
1560 | skb_copy_to_linear_data(skb, rx_buff->data + offset, | |
1561 | length); | |
6052d5e2 MFV |
1562 | |
1563 | /* VLAN Header has been stripped by the system firmware and | |
1564 | * needs to be inserted by the driver | |
1565 | */ | |
1566 | if (adapter->rx_vlan_header_insertion && | |
1567 | (flags & IBMVNIC_VLAN_STRIPPED)) | |
1568 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
1569 | ntohs(next->rx_comp.vlan_tci)); | |
1570 | ||
032c5e82 TF |
1571 | /* free the entry */ |
1572 | next->rx_comp.first = 0; | |
1573 | remove_buff_from_pool(adapter, rx_buff); | |
1574 | ||
1575 | skb_put(skb, length); | |
1576 | skb->protocol = eth_type_trans(skb, netdev); | |
94ca305f | 1577 | skb_record_rx_queue(skb, scrq_num); |
032c5e82 TF |
1578 | |
1579 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && | |
1580 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { | |
1581 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1582 | } | |
1583 | ||
1584 | length = skb->len; | |
1585 | napi_gro_receive(napi, skb); /* send it up */ | |
1586 | netdev->stats.rx_packets++; | |
1587 | netdev->stats.rx_bytes += length; | |
1588 | frames_processed++; | |
1589 | } | |
152ce47d NF |
1590 | |
1591 | if (adapter->state != VNIC_CLOSING) | |
1592 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); | |
032c5e82 TF |
1593 | |
1594 | if (frames_processed < budget) { | |
1595 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
6ad20165 | 1596 | napi_complete_done(napi, frames_processed); |
032c5e82 TF |
1597 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && |
1598 | napi_reschedule(napi)) { | |
1599 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
1600 | goto restart_poll; | |
1601 | } | |
1602 | } | |
1603 | return frames_processed; | |
1604 | } | |
1605 | ||
1606 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1607 | static void ibmvnic_netpoll_controller(struct net_device *dev) | |
1608 | { | |
1609 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1610 | int i; | |
1611 | ||
1612 | replenish_pools(netdev_priv(dev)); | |
1613 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1614 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
1615 | adapter->rx_scrq[i]); | |
1616 | } | |
1617 | #endif | |
1618 | ||
3a807b75 JA |
1619 | static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu) |
1620 | { | |
1621 | return -EOPNOTSUPP; | |
1622 | } | |
1623 | ||
032c5e82 TF |
1624 | static const struct net_device_ops ibmvnic_netdev_ops = { |
1625 | .ndo_open = ibmvnic_open, | |
1626 | .ndo_stop = ibmvnic_close, | |
1627 | .ndo_start_xmit = ibmvnic_xmit, | |
1628 | .ndo_set_rx_mode = ibmvnic_set_multi, | |
1629 | .ndo_set_mac_address = ibmvnic_set_mac, | |
1630 | .ndo_validate_addr = eth_validate_addr, | |
032c5e82 TF |
1631 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
1632 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1633 | .ndo_poll_controller = ibmvnic_netpoll_controller, | |
1634 | #endif | |
3a807b75 | 1635 | .ndo_change_mtu = ibmvnic_change_mtu, |
032c5e82 TF |
1636 | }; |
1637 | ||
1638 | /* ethtool functions */ | |
1639 | ||
8a43379f PR |
1640 | static int ibmvnic_get_link_ksettings(struct net_device *netdev, |
1641 | struct ethtool_link_ksettings *cmd) | |
032c5e82 | 1642 | { |
8a43379f PR |
1643 | u32 supported, advertising; |
1644 | ||
1645 | supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | | |
032c5e82 | 1646 | SUPPORTED_FIBRE); |
8a43379f | 1647 | advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
032c5e82 | 1648 | ADVERTISED_FIBRE); |
8a43379f PR |
1649 | cmd->base.speed = SPEED_1000; |
1650 | cmd->base.duplex = DUPLEX_FULL; | |
1651 | cmd->base.port = PORT_FIBRE; | |
1652 | cmd->base.phy_address = 0; | |
1653 | cmd->base.autoneg = AUTONEG_ENABLE; | |
1654 | ||
1655 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
1656 | supported); | |
1657 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
1658 | advertising); | |
1659 | ||
032c5e82 TF |
1660 | return 0; |
1661 | } | |
1662 | ||
1663 | static void ibmvnic_get_drvinfo(struct net_device *dev, | |
1664 | struct ethtool_drvinfo *info) | |
1665 | { | |
1666 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); | |
1667 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); | |
1668 | } | |
1669 | ||
1670 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) | |
1671 | { | |
1672 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1673 | ||
1674 | return adapter->msg_enable; | |
1675 | } | |
1676 | ||
1677 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) | |
1678 | { | |
1679 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1680 | ||
1681 | adapter->msg_enable = data; | |
1682 | } | |
1683 | ||
1684 | static u32 ibmvnic_get_link(struct net_device *netdev) | |
1685 | { | |
1686 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1687 | ||
1688 | /* Don't need to send a query because we request a logical link up at | |
1689 | * init and then we wait for link state indications | |
1690 | */ | |
1691 | return adapter->logical_link_state; | |
1692 | } | |
1693 | ||
1694 | static void ibmvnic_get_ringparam(struct net_device *netdev, | |
1695 | struct ethtool_ringparam *ring) | |
1696 | { | |
1697 | ring->rx_max_pending = 0; | |
1698 | ring->tx_max_pending = 0; | |
1699 | ring->rx_mini_max_pending = 0; | |
1700 | ring->rx_jumbo_max_pending = 0; | |
1701 | ring->rx_pending = 0; | |
1702 | ring->tx_pending = 0; | |
1703 | ring->rx_mini_pending = 0; | |
1704 | ring->rx_jumbo_pending = 0; | |
1705 | } | |
1706 | ||
1707 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
1708 | { | |
1709 | int i; | |
1710 | ||
1711 | if (stringset != ETH_SS_STATS) | |
1712 | return; | |
1713 | ||
1714 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN) | |
1715 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); | |
1716 | } | |
1717 | ||
1718 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) | |
1719 | { | |
1720 | switch (sset) { | |
1721 | case ETH_SS_STATS: | |
1722 | return ARRAY_SIZE(ibmvnic_stats); | |
1723 | default: | |
1724 | return -EOPNOTSUPP; | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, | |
1729 | struct ethtool_stats *stats, u64 *data) | |
1730 | { | |
1731 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
1732 | union ibmvnic_crq crq; | |
1733 | int i; | |
1734 | ||
1735 | memset(&crq, 0, sizeof(crq)); | |
1736 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; | |
1737 | crq.request_statistics.cmd = REQUEST_STATISTICS; | |
1738 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); | |
1739 | crq.request_statistics.len = | |
1740 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); | |
032c5e82 TF |
1741 | |
1742 | /* Wait for data to be written */ | |
1743 | init_completion(&adapter->stats_done); | |
db5d0b59 | 1744 | ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
1745 | wait_for_completion(&adapter->stats_done); |
1746 | ||
1747 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) | |
1748 | data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset); | |
1749 | } | |
1750 | ||
1751 | static const struct ethtool_ops ibmvnic_ethtool_ops = { | |
032c5e82 TF |
1752 | .get_drvinfo = ibmvnic_get_drvinfo, |
1753 | .get_msglevel = ibmvnic_get_msglevel, | |
1754 | .set_msglevel = ibmvnic_set_msglevel, | |
1755 | .get_link = ibmvnic_get_link, | |
1756 | .get_ringparam = ibmvnic_get_ringparam, | |
1757 | .get_strings = ibmvnic_get_strings, | |
1758 | .get_sset_count = ibmvnic_get_sset_count, | |
1759 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, | |
8a43379f | 1760 | .get_link_ksettings = ibmvnic_get_link_ksettings, |
032c5e82 TF |
1761 | }; |
1762 | ||
1763 | /* Routines for managing CRQs/sCRQs */ | |
1764 | ||
57a49436 NF |
1765 | static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter, |
1766 | struct ibmvnic_sub_crq_queue *scrq) | |
1767 | { | |
1768 | int rc; | |
1769 | ||
1770 | if (scrq->irq) { | |
1771 | free_irq(scrq->irq, scrq); | |
1772 | irq_dispose_mapping(scrq->irq); | |
1773 | scrq->irq = 0; | |
1774 | } | |
1775 | ||
c8b2ad0a | 1776 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); |
57a49436 NF |
1777 | scrq->cur = 0; |
1778 | ||
1779 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
1780 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
1781 | return rc; | |
1782 | } | |
1783 | ||
1784 | static int reset_sub_crq_queues(struct ibmvnic_adapter *adapter) | |
1785 | { | |
1786 | int i, rc; | |
1787 | ||
1788 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
1789 | rc = reset_one_sub_crq_queue(adapter, adapter->tx_scrq[i]); | |
1790 | if (rc) | |
1791 | return rc; | |
1792 | } | |
1793 | ||
1794 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
1795 | rc = reset_one_sub_crq_queue(adapter, adapter->rx_scrq[i]); | |
1796 | if (rc) | |
1797 | return rc; | |
1798 | } | |
1799 | ||
57a49436 NF |
1800 | return rc; |
1801 | } | |
1802 | ||
032c5e82 TF |
1803 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, |
1804 | struct ibmvnic_sub_crq_queue *scrq) | |
1805 | { | |
1806 | struct device *dev = &adapter->vdev->dev; | |
1807 | long rc; | |
1808 | ||
1809 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); | |
1810 | ||
1811 | /* Close the sub-crqs */ | |
1812 | do { | |
1813 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, | |
1814 | adapter->vdev->unit_address, | |
1815 | scrq->crq_num); | |
1816 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
1817 | ||
ffa73855 TF |
1818 | if (rc) { |
1819 | netdev_err(adapter->netdev, | |
1820 | "Failed to release sub-CRQ %16lx, rc = %ld\n", | |
1821 | scrq->crq_num, rc); | |
1822 | } | |
1823 | ||
032c5e82 TF |
1824 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, |
1825 | DMA_BIDIRECTIONAL); | |
1826 | free_pages((unsigned long)scrq->msgs, 2); | |
1827 | kfree(scrq); | |
1828 | } | |
1829 | ||
1830 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter | |
1831 | *adapter) | |
1832 | { | |
1833 | struct device *dev = &adapter->vdev->dev; | |
1834 | struct ibmvnic_sub_crq_queue *scrq; | |
1835 | int rc; | |
1836 | ||
1bb3c739 | 1837 | scrq = kzalloc(sizeof(*scrq), GFP_KERNEL); |
032c5e82 TF |
1838 | if (!scrq) |
1839 | return NULL; | |
1840 | ||
7f7adc50 | 1841 | scrq->msgs = |
1bb3c739 | 1842 | (union sub_crq *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 2); |
032c5e82 TF |
1843 | if (!scrq->msgs) { |
1844 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); | |
1845 | goto zero_page_failed; | |
1846 | } | |
1847 | ||
1848 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, | |
1849 | DMA_BIDIRECTIONAL); | |
1850 | if (dma_mapping_error(dev, scrq->msg_token)) { | |
1851 | dev_warn(dev, "Couldn't map crq queue messages page\n"); | |
1852 | goto map_failed; | |
1853 | } | |
1854 | ||
1855 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
1856 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
1857 | ||
1858 | if (rc == H_RESOURCE) | |
1859 | rc = ibmvnic_reset_crq(adapter); | |
1860 | ||
1861 | if (rc == H_CLOSED) { | |
1862 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); | |
1863 | } else if (rc) { | |
1864 | dev_warn(dev, "Error %d registering sub-crq\n", rc); | |
1865 | goto reg_failed; | |
1866 | } | |
1867 | ||
032c5e82 TF |
1868 | scrq->adapter = adapter; |
1869 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); | |
032c5e82 TF |
1870 | spin_lock_init(&scrq->lock); |
1871 | ||
1872 | netdev_dbg(adapter->netdev, | |
1873 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", | |
1874 | scrq->crq_num, scrq->hw_irq, scrq->irq); | |
1875 | ||
1876 | return scrq; | |
1877 | ||
032c5e82 TF |
1878 | reg_failed: |
1879 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
1880 | DMA_BIDIRECTIONAL); | |
1881 | map_failed: | |
1882 | free_pages((unsigned long)scrq->msgs, 2); | |
1883 | zero_page_failed: | |
1884 | kfree(scrq); | |
1885 | ||
1886 | return NULL; | |
1887 | } | |
1888 | ||
1889 | static void release_sub_crqs(struct ibmvnic_adapter *adapter) | |
1890 | { | |
1891 | int i; | |
1892 | ||
1893 | if (adapter->tx_scrq) { | |
b510888f NF |
1894 | for (i = 0; i < adapter->req_tx_queues; i++) { |
1895 | if (!adapter->tx_scrq[i]) | |
1896 | continue; | |
1897 | ||
1898 | if (adapter->tx_scrq[i]->irq) { | |
032c5e82 TF |
1899 | free_irq(adapter->tx_scrq[i]->irq, |
1900 | adapter->tx_scrq[i]); | |
88eb98a0 | 1901 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
b510888f | 1902 | adapter->tx_scrq[i]->irq = 0; |
032c5e82 | 1903 | } |
b510888f NF |
1904 | |
1905 | release_sub_crq_queue(adapter, adapter->tx_scrq[i]); | |
1906 | } | |
1907 | ||
9501df3c | 1908 | kfree(adapter->tx_scrq); |
032c5e82 TF |
1909 | adapter->tx_scrq = NULL; |
1910 | } | |
1911 | ||
1912 | if (adapter->rx_scrq) { | |
b510888f NF |
1913 | for (i = 0; i < adapter->req_rx_queues; i++) { |
1914 | if (!adapter->rx_scrq[i]) | |
1915 | continue; | |
1916 | ||
1917 | if (adapter->rx_scrq[i]->irq) { | |
032c5e82 TF |
1918 | free_irq(adapter->rx_scrq[i]->irq, |
1919 | adapter->rx_scrq[i]); | |
88eb98a0 | 1920 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
b510888f | 1921 | adapter->rx_scrq[i]->irq = 0; |
032c5e82 | 1922 | } |
032c5e82 | 1923 | |
b510888f NF |
1924 | release_sub_crq_queue(adapter, adapter->rx_scrq[i]); |
1925 | } | |
ea22d51a | 1926 | |
b510888f | 1927 | kfree(adapter->rx_scrq); |
ea22d51a TF |
1928 | adapter->rx_scrq = NULL; |
1929 | } | |
ea22d51a TF |
1930 | } |
1931 | ||
032c5e82 TF |
1932 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
1933 | struct ibmvnic_sub_crq_queue *scrq) | |
1934 | { | |
1935 | struct device *dev = &adapter->vdev->dev; | |
1936 | unsigned long rc; | |
1937 | ||
1938 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1939 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1940 | if (rc) | |
1941 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", | |
1942 | scrq->hw_irq, rc); | |
1943 | return rc; | |
1944 | } | |
1945 | ||
1946 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, | |
1947 | struct ibmvnic_sub_crq_queue *scrq) | |
1948 | { | |
1949 | struct device *dev = &adapter->vdev->dev; | |
1950 | unsigned long rc; | |
1951 | ||
1952 | if (scrq->hw_irq > 0x100000000ULL) { | |
1953 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); | |
1954 | return 1; | |
1955 | } | |
1956 | ||
1957 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
1958 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
1959 | if (rc) | |
1960 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", | |
1961 | scrq->hw_irq, rc); | |
1962 | return rc; | |
1963 | } | |
1964 | ||
1965 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, | |
1966 | struct ibmvnic_sub_crq_queue *scrq) | |
1967 | { | |
1968 | struct device *dev = &adapter->vdev->dev; | |
1969 | struct ibmvnic_tx_buff *txbuff; | |
1970 | union sub_crq *next; | |
1971 | int index; | |
1972 | int i, j; | |
ad7775dc | 1973 | u8 first; |
032c5e82 TF |
1974 | |
1975 | restart_loop: | |
1976 | while (pending_scrq(adapter, scrq)) { | |
1977 | unsigned int pool = scrq->pool_index; | |
1978 | ||
1979 | next = ibmvnic_next_scrq(adapter, scrq); | |
1980 | for (i = 0; i < next->tx_comp.num_comps; i++) { | |
1981 | if (next->tx_comp.rcs[i]) { | |
1982 | dev_err(dev, "tx error %x\n", | |
1983 | next->tx_comp.rcs[i]); | |
1984 | continue; | |
1985 | } | |
1986 | index = be32_to_cpu(next->tx_comp.correlators[i]); | |
1987 | txbuff = &adapter->tx_pool[pool].tx_buff[index]; | |
1988 | ||
1989 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { | |
1990 | if (!txbuff->data_dma[j]) | |
1991 | continue; | |
1992 | ||
1993 | txbuff->data_dma[j] = 0; | |
032c5e82 | 1994 | } |
ad7775dc TF |
1995 | /* if sub_crq was sent indirectly */ |
1996 | first = txbuff->indir_arr[0].generic.first; | |
1997 | if (first == IBMVNIC_CRQ_CMD) { | |
1998 | dma_unmap_single(dev, txbuff->indir_dma, | |
1999 | sizeof(txbuff->indir_arr), | |
2000 | DMA_TO_DEVICE); | |
2001 | } | |
032c5e82 | 2002 | |
142c0ac4 | 2003 | if (txbuff->last_frag) { |
032c5e82 | 2004 | dev_kfree_skb_any(txbuff->skb); |
7c3e7de3 | 2005 | txbuff->skb = NULL; |
142c0ac4 | 2006 | } |
032c5e82 TF |
2007 | |
2008 | adapter->tx_pool[pool].free_map[adapter->tx_pool[pool]. | |
2009 | producer_index] = index; | |
2010 | adapter->tx_pool[pool].producer_index = | |
2011 | (adapter->tx_pool[pool].producer_index + 1) % | |
068d9f90 | 2012 | adapter->req_tx_entries_per_subcrq; |
032c5e82 TF |
2013 | } |
2014 | /* remove tx_comp scrq*/ | |
2015 | next->tx_comp.first = 0; | |
7c3e7de3 NF |
2016 | |
2017 | if (atomic_sub_return(next->tx_comp.num_comps, &scrq->used) <= | |
2018 | (adapter->req_tx_entries_per_subcrq / 2) && | |
2019 | __netif_subqueue_stopped(adapter->netdev, | |
2020 | scrq->pool_index)) { | |
2021 | netif_wake_subqueue(adapter->netdev, scrq->pool_index); | |
2022 | netdev_info(adapter->netdev, "Started queue %d\n", | |
2023 | scrq->pool_index); | |
2024 | } | |
032c5e82 TF |
2025 | } |
2026 | ||
2027 | enable_scrq_irq(adapter, scrq); | |
2028 | ||
2029 | if (pending_scrq(adapter, scrq)) { | |
2030 | disable_scrq_irq(adapter, scrq); | |
2031 | goto restart_loop; | |
2032 | } | |
2033 | ||
2034 | return 0; | |
2035 | } | |
2036 | ||
2037 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) | |
2038 | { | |
2039 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
2040 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
2041 | ||
2042 | disable_scrq_irq(adapter, scrq); | |
2043 | ibmvnic_complete_tx(adapter, scrq); | |
2044 | ||
2045 | return IRQ_HANDLED; | |
2046 | } | |
2047 | ||
2048 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) | |
2049 | { | |
2050 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
2051 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
2052 | ||
2053 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { | |
2054 | disable_scrq_irq(adapter, scrq); | |
2055 | __napi_schedule(&adapter->napi[scrq->scrq_num]); | |
2056 | } | |
2057 | ||
2058 | return IRQ_HANDLED; | |
2059 | } | |
2060 | ||
ea22d51a TF |
2061 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
2062 | { | |
2063 | struct device *dev = &adapter->vdev->dev; | |
2064 | struct ibmvnic_sub_crq_queue *scrq; | |
2065 | int i = 0, j = 0; | |
2066 | int rc = 0; | |
2067 | ||
2068 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
2069 | scrq = adapter->tx_scrq[i]; | |
2070 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
2071 | ||
99c1790e | 2072 | if (!scrq->irq) { |
ea22d51a TF |
2073 | rc = -EINVAL; |
2074 | dev_err(dev, "Error mapping irq\n"); | |
2075 | goto req_tx_irq_failed; | |
2076 | } | |
2077 | ||
2078 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, | |
2079 | 0, "ibmvnic_tx", scrq); | |
2080 | ||
2081 | if (rc) { | |
2082 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", | |
2083 | scrq->irq, rc); | |
2084 | irq_dispose_mapping(scrq->irq); | |
2085 | goto req_rx_irq_failed; | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
2090 | scrq = adapter->rx_scrq[i]; | |
2091 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
99c1790e | 2092 | if (!scrq->irq) { |
ea22d51a TF |
2093 | rc = -EINVAL; |
2094 | dev_err(dev, "Error mapping irq\n"); | |
2095 | goto req_rx_irq_failed; | |
2096 | } | |
2097 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, | |
2098 | 0, "ibmvnic_rx", scrq); | |
2099 | if (rc) { | |
2100 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", | |
2101 | scrq->irq, rc); | |
2102 | irq_dispose_mapping(scrq->irq); | |
2103 | goto req_rx_irq_failed; | |
2104 | } | |
2105 | } | |
2106 | return rc; | |
2107 | ||
2108 | req_rx_irq_failed: | |
8bf371e6 | 2109 | for (j = 0; j < i; j++) { |
ea22d51a TF |
2110 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); |
2111 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 2112 | } |
ea22d51a TF |
2113 | i = adapter->req_tx_queues; |
2114 | req_tx_irq_failed: | |
8bf371e6 | 2115 | for (j = 0; j < i; j++) { |
ea22d51a TF |
2116 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); |
2117 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 2118 | } |
b510888f | 2119 | release_sub_crqs(adapter); |
ea22d51a TF |
2120 | return rc; |
2121 | } | |
2122 | ||
d346b9bc | 2123 | static int init_sub_crqs(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
2124 | { |
2125 | struct device *dev = &adapter->vdev->dev; | |
2126 | struct ibmvnic_sub_crq_queue **allqueues; | |
2127 | int registered_queues = 0; | |
032c5e82 TF |
2128 | int total_queues; |
2129 | int more = 0; | |
ea22d51a | 2130 | int i; |
032c5e82 | 2131 | |
032c5e82 TF |
2132 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; |
2133 | ||
1bb3c739 | 2134 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_KERNEL); |
032c5e82 | 2135 | if (!allqueues) |
d346b9bc | 2136 | return -1; |
032c5e82 TF |
2137 | |
2138 | for (i = 0; i < total_queues; i++) { | |
2139 | allqueues[i] = init_sub_crq_queue(adapter); | |
2140 | if (!allqueues[i]) { | |
2141 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); | |
2142 | break; | |
2143 | } | |
2144 | registered_queues++; | |
2145 | } | |
2146 | ||
2147 | /* Make sure we were able to register the minimum number of queues */ | |
2148 | if (registered_queues < | |
2149 | adapter->min_tx_queues + adapter->min_rx_queues) { | |
2150 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); | |
2151 | goto tx_failed; | |
2152 | } | |
2153 | ||
2154 | /* Distribute the failed allocated queues*/ | |
2155 | for (i = 0; i < total_queues - registered_queues + more ; i++) { | |
2156 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); | |
2157 | switch (i % 3) { | |
2158 | case 0: | |
2159 | if (adapter->req_rx_queues > adapter->min_rx_queues) | |
2160 | adapter->req_rx_queues--; | |
2161 | else | |
2162 | more++; | |
2163 | break; | |
2164 | case 1: | |
2165 | if (adapter->req_tx_queues > adapter->min_tx_queues) | |
2166 | adapter->req_tx_queues--; | |
2167 | else | |
2168 | more++; | |
2169 | break; | |
2170 | } | |
2171 | } | |
2172 | ||
2173 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, | |
1bb3c739 | 2174 | sizeof(*adapter->tx_scrq), GFP_KERNEL); |
032c5e82 TF |
2175 | if (!adapter->tx_scrq) |
2176 | goto tx_failed; | |
2177 | ||
2178 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
2179 | adapter->tx_scrq[i] = allqueues[i]; | |
2180 | adapter->tx_scrq[i]->pool_index = i; | |
032c5e82 TF |
2181 | } |
2182 | ||
2183 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, | |
1bb3c739 | 2184 | sizeof(*adapter->rx_scrq), GFP_KERNEL); |
032c5e82 TF |
2185 | if (!adapter->rx_scrq) |
2186 | goto rx_failed; | |
2187 | ||
2188 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
2189 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; | |
2190 | adapter->rx_scrq[i]->scrq_num = i; | |
032c5e82 TF |
2191 | } |
2192 | ||
d346b9bc NF |
2193 | kfree(allqueues); |
2194 | return 0; | |
2195 | ||
2196 | rx_failed: | |
2197 | kfree(adapter->tx_scrq); | |
2198 | adapter->tx_scrq = NULL; | |
2199 | tx_failed: | |
2200 | for (i = 0; i < registered_queues; i++) | |
2201 | release_sub_crq_queue(adapter, allqueues[i]); | |
2202 | kfree(allqueues); | |
2203 | return -1; | |
2204 | } | |
2205 | ||
2206 | static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry) | |
2207 | { | |
2208 | struct device *dev = &adapter->vdev->dev; | |
2209 | union ibmvnic_crq crq; | |
d346b9bc NF |
2210 | |
2211 | if (!retry) { | |
2212 | /* Sub-CRQ entries are 32 byte long */ | |
2213 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); | |
2214 | ||
2215 | if (adapter->min_tx_entries_per_subcrq > entries_page || | |
2216 | adapter->min_rx_add_entries_per_subcrq > entries_page) { | |
2217 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); | |
2218 | return; | |
2219 | } | |
2220 | ||
2221 | /* Get the minimum between the queried max and the entries | |
2222 | * that fit in our PAGE_SIZE | |
2223 | */ | |
2224 | adapter->req_tx_entries_per_subcrq = | |
2225 | adapter->max_tx_entries_per_subcrq > entries_page ? | |
2226 | entries_page : adapter->max_tx_entries_per_subcrq; | |
2227 | adapter->req_rx_add_entries_per_subcrq = | |
2228 | adapter->max_rx_add_entries_per_subcrq > entries_page ? | |
2229 | entries_page : adapter->max_rx_add_entries_per_subcrq; | |
2230 | ||
2231 | adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues; | |
2232 | adapter->req_rx_queues = adapter->opt_rx_comp_queues; | |
2233 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; | |
2234 | ||
2235 | adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; | |
2236 | } | |
2237 | ||
032c5e82 TF |
2238 | memset(&crq, 0, sizeof(crq)); |
2239 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
2240 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
2241 | ||
2242 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); | |
de89e854 | 2243 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
901e040a | 2244 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2245 | ibmvnic_send_crq(adapter, &crq); |
2246 | ||
2247 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); | |
de89e854 | 2248 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
901e040a | 2249 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2250 | ibmvnic_send_crq(adapter, &crq); |
2251 | ||
2252 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); | |
de89e854 | 2253 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
901e040a | 2254 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2255 | ibmvnic_send_crq(adapter, &crq); |
2256 | ||
2257 | crq.request_capability.capability = | |
2258 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); | |
2259 | crq.request_capability.number = | |
de89e854 | 2260 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
901e040a | 2261 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2262 | ibmvnic_send_crq(adapter, &crq); |
2263 | ||
2264 | crq.request_capability.capability = | |
2265 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); | |
2266 | crq.request_capability.number = | |
de89e854 | 2267 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
901e040a | 2268 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2269 | ibmvnic_send_crq(adapter, &crq); |
2270 | ||
2271 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); | |
de89e854 | 2272 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
901e040a | 2273 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2274 | ibmvnic_send_crq(adapter, &crq); |
2275 | ||
2276 | if (adapter->netdev->flags & IFF_PROMISC) { | |
2277 | if (adapter->promisc_supported) { | |
2278 | crq.request_capability.capability = | |
2279 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 2280 | crq.request_capability.number = cpu_to_be64(1); |
901e040a | 2281 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2282 | ibmvnic_send_crq(adapter, &crq); |
2283 | } | |
2284 | } else { | |
2285 | crq.request_capability.capability = | |
2286 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 2287 | crq.request_capability.number = cpu_to_be64(0); |
901e040a | 2288 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2289 | ibmvnic_send_crq(adapter, &crq); |
2290 | } | |
032c5e82 TF |
2291 | } |
2292 | ||
2293 | static int pending_scrq(struct ibmvnic_adapter *adapter, | |
2294 | struct ibmvnic_sub_crq_queue *scrq) | |
2295 | { | |
2296 | union sub_crq *entry = &scrq->msgs[scrq->cur]; | |
2297 | ||
1cf9cc72 | 2298 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) |
032c5e82 TF |
2299 | return 1; |
2300 | else | |
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, | |
2305 | struct ibmvnic_sub_crq_queue *scrq) | |
2306 | { | |
2307 | union sub_crq *entry; | |
2308 | unsigned long flags; | |
2309 | ||
2310 | spin_lock_irqsave(&scrq->lock, flags); | |
2311 | entry = &scrq->msgs[scrq->cur]; | |
2312 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
2313 | if (++scrq->cur == scrq->size) | |
2314 | scrq->cur = 0; | |
2315 | } else { | |
2316 | entry = NULL; | |
2317 | } | |
2318 | spin_unlock_irqrestore(&scrq->lock, flags); | |
2319 | ||
2320 | return entry; | |
2321 | } | |
2322 | ||
2323 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) | |
2324 | { | |
2325 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
2326 | union ibmvnic_crq *crq; | |
2327 | ||
2328 | crq = &queue->msgs[queue->cur]; | |
2329 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
2330 | if (++queue->cur == queue->size) | |
2331 | queue->cur = 0; | |
2332 | } else { | |
2333 | crq = NULL; | |
2334 | } | |
2335 | ||
2336 | return crq; | |
2337 | } | |
2338 | ||
2339 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
2340 | union sub_crq *sub_crq) | |
2341 | { | |
2342 | unsigned int ua = adapter->vdev->unit_address; | |
2343 | struct device *dev = &adapter->vdev->dev; | |
2344 | u64 *u64_crq = (u64 *)sub_crq; | |
2345 | int rc; | |
2346 | ||
2347 | netdev_dbg(adapter->netdev, | |
2348 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", | |
2349 | (unsigned long int)cpu_to_be64(remote_handle), | |
2350 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
2351 | (unsigned long int)cpu_to_be64(u64_crq[1]), | |
2352 | (unsigned long int)cpu_to_be64(u64_crq[2]), | |
2353 | (unsigned long int)cpu_to_be64(u64_crq[3])); | |
2354 | ||
2355 | /* Make sure the hypervisor sees the complete request */ | |
2356 | mb(); | |
2357 | ||
2358 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, | |
2359 | cpu_to_be64(remote_handle), | |
2360 | cpu_to_be64(u64_crq[0]), | |
2361 | cpu_to_be64(u64_crq[1]), | |
2362 | cpu_to_be64(u64_crq[2]), | |
2363 | cpu_to_be64(u64_crq[3])); | |
2364 | ||
2365 | if (rc) { | |
2366 | if (rc == H_CLOSED) | |
2367 | dev_warn(dev, "CRQ Queue closed\n"); | |
2368 | dev_err(dev, "Send error (rc=%d)\n", rc); | |
2369 | } | |
2370 | ||
2371 | return rc; | |
2372 | } | |
2373 | ||
ad7775dc TF |
2374 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
2375 | u64 remote_handle, u64 ioba, u64 num_entries) | |
2376 | { | |
2377 | unsigned int ua = adapter->vdev->unit_address; | |
2378 | struct device *dev = &adapter->vdev->dev; | |
2379 | int rc; | |
2380 | ||
2381 | /* Make sure the hypervisor sees the complete request */ | |
2382 | mb(); | |
2383 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, | |
2384 | cpu_to_be64(remote_handle), | |
2385 | ioba, num_entries); | |
2386 | ||
2387 | if (rc) { | |
2388 | if (rc == H_CLOSED) | |
2389 | dev_warn(dev, "CRQ Queue closed\n"); | |
2390 | dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); | |
2391 | } | |
2392 | ||
2393 | return rc; | |
2394 | } | |
2395 | ||
032c5e82 TF |
2396 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
2397 | union ibmvnic_crq *crq) | |
2398 | { | |
2399 | unsigned int ua = adapter->vdev->unit_address; | |
2400 | struct device *dev = &adapter->vdev->dev; | |
2401 | u64 *u64_crq = (u64 *)crq; | |
2402 | int rc; | |
2403 | ||
2404 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", | |
2405 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
2406 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
2407 | ||
2408 | /* Make sure the hypervisor sees the complete request */ | |
2409 | mb(); | |
2410 | ||
2411 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, | |
2412 | cpu_to_be64(u64_crq[0]), | |
2413 | cpu_to_be64(u64_crq[1])); | |
2414 | ||
2415 | if (rc) { | |
2416 | if (rc == H_CLOSED) | |
2417 | dev_warn(dev, "CRQ Queue closed\n"); | |
2418 | dev_warn(dev, "Send error (rc=%d)\n", rc); | |
2419 | } | |
2420 | ||
2421 | return rc; | |
2422 | } | |
2423 | ||
2424 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) | |
2425 | { | |
2426 | union ibmvnic_crq crq; | |
2427 | ||
2428 | memset(&crq, 0, sizeof(crq)); | |
2429 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
2430 | crq.generic.cmd = IBMVNIC_CRQ_INIT; | |
2431 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); | |
2432 | ||
2433 | return ibmvnic_send_crq(adapter, &crq); | |
2434 | } | |
2435 | ||
032c5e82 TF |
2436 | static int send_version_xchg(struct ibmvnic_adapter *adapter) |
2437 | { | |
2438 | union ibmvnic_crq crq; | |
2439 | ||
2440 | memset(&crq, 0, sizeof(crq)); | |
2441 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; | |
2442 | crq.version_exchange.cmd = VERSION_EXCHANGE; | |
2443 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); | |
2444 | ||
2445 | return ibmvnic_send_crq(adapter, &crq); | |
2446 | } | |
2447 | ||
2448 | static void send_login(struct ibmvnic_adapter *adapter) | |
2449 | { | |
2450 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; | |
2451 | struct ibmvnic_login_buffer *login_buffer; | |
032c5e82 TF |
2452 | struct device *dev = &adapter->vdev->dev; |
2453 | dma_addr_t rsp_buffer_token; | |
2454 | dma_addr_t buffer_token; | |
2455 | size_t rsp_buffer_size; | |
2456 | union ibmvnic_crq crq; | |
032c5e82 TF |
2457 | size_t buffer_size; |
2458 | __be64 *tx_list_p; | |
2459 | __be64 *rx_list_p; | |
2460 | int i; | |
2461 | ||
2462 | buffer_size = | |
2463 | sizeof(struct ibmvnic_login_buffer) + | |
2464 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues); | |
2465 | ||
2466 | login_buffer = kmalloc(buffer_size, GFP_ATOMIC); | |
2467 | if (!login_buffer) | |
2468 | goto buf_alloc_failed; | |
2469 | ||
2470 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, | |
2471 | DMA_TO_DEVICE); | |
2472 | if (dma_mapping_error(dev, buffer_token)) { | |
2473 | dev_err(dev, "Couldn't map login buffer\n"); | |
2474 | goto buf_map_failed; | |
2475 | } | |
2476 | ||
498cd8e4 JA |
2477 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
2478 | sizeof(u64) * adapter->req_tx_queues + | |
2479 | sizeof(u64) * adapter->req_rx_queues + | |
2480 | sizeof(u64) * adapter->req_rx_queues + | |
2481 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; | |
032c5e82 TF |
2482 | |
2483 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); | |
2484 | if (!login_rsp_buffer) | |
2485 | goto buf_rsp_alloc_failed; | |
2486 | ||
2487 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, | |
2488 | rsp_buffer_size, DMA_FROM_DEVICE); | |
2489 | if (dma_mapping_error(dev, rsp_buffer_token)) { | |
2490 | dev_err(dev, "Couldn't map login rsp buffer\n"); | |
2491 | goto buf_rsp_map_failed; | |
2492 | } | |
661a2622 | 2493 | |
032c5e82 TF |
2494 | adapter->login_buf = login_buffer; |
2495 | adapter->login_buf_token = buffer_token; | |
2496 | adapter->login_buf_sz = buffer_size; | |
2497 | adapter->login_rsp_buf = login_rsp_buffer; | |
2498 | adapter->login_rsp_buf_token = rsp_buffer_token; | |
2499 | adapter->login_rsp_buf_sz = rsp_buffer_size; | |
2500 | ||
2501 | login_buffer->len = cpu_to_be32(buffer_size); | |
2502 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); | |
2503 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); | |
2504 | login_buffer->off_txcomp_subcrqs = | |
2505 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); | |
2506 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); | |
2507 | login_buffer->off_rxcomp_subcrqs = | |
2508 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + | |
2509 | sizeof(u64) * adapter->req_tx_queues); | |
2510 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); | |
2511 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); | |
2512 | ||
2513 | tx_list_p = (__be64 *)((char *)login_buffer + | |
2514 | sizeof(struct ibmvnic_login_buffer)); | |
2515 | rx_list_p = (__be64 *)((char *)login_buffer + | |
2516 | sizeof(struct ibmvnic_login_buffer) + | |
2517 | sizeof(u64) * adapter->req_tx_queues); | |
2518 | ||
2519 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
2520 | if (adapter->tx_scrq[i]) { | |
2521 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> | |
2522 | crq_num); | |
2523 | } | |
2524 | } | |
2525 | ||
2526 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
2527 | if (adapter->rx_scrq[i]) { | |
2528 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> | |
2529 | crq_num); | |
2530 | } | |
2531 | } | |
2532 | ||
2533 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); | |
2534 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { | |
2535 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2536 | ((unsigned long int *)(adapter->login_buf))[i]); | |
2537 | } | |
2538 | ||
2539 | memset(&crq, 0, sizeof(crq)); | |
2540 | crq.login.first = IBMVNIC_CRQ_CMD; | |
2541 | crq.login.cmd = LOGIN; | |
2542 | crq.login.ioba = cpu_to_be32(buffer_token); | |
2543 | crq.login.len = cpu_to_be32(buffer_size); | |
032c5e82 TF |
2544 | ibmvnic_send_crq(adapter, &crq); |
2545 | ||
2546 | return; | |
2547 | ||
032c5e82 TF |
2548 | buf_rsp_map_failed: |
2549 | kfree(login_rsp_buffer); | |
2550 | buf_rsp_alloc_failed: | |
2551 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); | |
2552 | buf_map_failed: | |
2553 | kfree(login_buffer); | |
2554 | buf_alloc_failed: | |
2555 | return; | |
2556 | } | |
2557 | ||
2558 | static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, | |
2559 | u32 len, u8 map_id) | |
2560 | { | |
2561 | union ibmvnic_crq crq; | |
2562 | ||
2563 | memset(&crq, 0, sizeof(crq)); | |
2564 | crq.request_map.first = IBMVNIC_CRQ_CMD; | |
2565 | crq.request_map.cmd = REQUEST_MAP; | |
2566 | crq.request_map.map_id = map_id; | |
2567 | crq.request_map.ioba = cpu_to_be32(addr); | |
2568 | crq.request_map.len = cpu_to_be32(len); | |
2569 | ibmvnic_send_crq(adapter, &crq); | |
2570 | } | |
2571 | ||
2572 | static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) | |
2573 | { | |
2574 | union ibmvnic_crq crq; | |
2575 | ||
2576 | memset(&crq, 0, sizeof(crq)); | |
2577 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; | |
2578 | crq.request_unmap.cmd = REQUEST_UNMAP; | |
2579 | crq.request_unmap.map_id = map_id; | |
2580 | ibmvnic_send_crq(adapter, &crq); | |
2581 | } | |
2582 | ||
2583 | static void send_map_query(struct ibmvnic_adapter *adapter) | |
2584 | { | |
2585 | union ibmvnic_crq crq; | |
2586 | ||
2587 | memset(&crq, 0, sizeof(crq)); | |
2588 | crq.query_map.first = IBMVNIC_CRQ_CMD; | |
2589 | crq.query_map.cmd = QUERY_MAP; | |
2590 | ibmvnic_send_crq(adapter, &crq); | |
2591 | } | |
2592 | ||
2593 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ | |
2594 | static void send_cap_queries(struct ibmvnic_adapter *adapter) | |
2595 | { | |
2596 | union ibmvnic_crq crq; | |
2597 | ||
901e040a | 2598 | atomic_set(&adapter->running_cap_crqs, 0); |
032c5e82 TF |
2599 | memset(&crq, 0, sizeof(crq)); |
2600 | crq.query_capability.first = IBMVNIC_CRQ_CMD; | |
2601 | crq.query_capability.cmd = QUERY_CAPABILITY; | |
2602 | ||
2603 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); | |
901e040a | 2604 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2605 | ibmvnic_send_crq(adapter, &crq); |
2606 | ||
2607 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); | |
901e040a | 2608 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2609 | ibmvnic_send_crq(adapter, &crq); |
2610 | ||
2611 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); | |
901e040a | 2612 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2613 | ibmvnic_send_crq(adapter, &crq); |
2614 | ||
2615 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); | |
901e040a | 2616 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2617 | ibmvnic_send_crq(adapter, &crq); |
2618 | ||
2619 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); | |
901e040a | 2620 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2621 | ibmvnic_send_crq(adapter, &crq); |
2622 | ||
2623 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); | |
901e040a | 2624 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2625 | ibmvnic_send_crq(adapter, &crq); |
2626 | ||
2627 | crq.query_capability.capability = | |
2628 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2629 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2630 | ibmvnic_send_crq(adapter, &crq); |
2631 | ||
2632 | crq.query_capability.capability = | |
2633 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 2634 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2635 | ibmvnic_send_crq(adapter, &crq); |
2636 | ||
2637 | crq.query_capability.capability = | |
2638 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2639 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2640 | ibmvnic_send_crq(adapter, &crq); |
2641 | ||
2642 | crq.query_capability.capability = | |
2643 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 2644 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2645 | ibmvnic_send_crq(adapter, &crq); |
2646 | ||
2647 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); | |
901e040a | 2648 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2649 | ibmvnic_send_crq(adapter, &crq); |
2650 | ||
2651 | crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); | |
901e040a | 2652 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2653 | ibmvnic_send_crq(adapter, &crq); |
2654 | ||
2655 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); | |
901e040a | 2656 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2657 | ibmvnic_send_crq(adapter, &crq); |
2658 | ||
2659 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); | |
901e040a | 2660 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2661 | ibmvnic_send_crq(adapter, &crq); |
2662 | ||
2663 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); | |
901e040a | 2664 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2665 | ibmvnic_send_crq(adapter, &crq); |
2666 | ||
2667 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); | |
901e040a | 2668 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2669 | ibmvnic_send_crq(adapter, &crq); |
2670 | ||
6052d5e2 MFV |
2671 | crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION); |
2672 | atomic_inc(&adapter->running_cap_crqs); | |
2673 | ibmvnic_send_crq(adapter, &crq); | |
2674 | ||
032c5e82 | 2675 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); |
901e040a | 2676 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2677 | ibmvnic_send_crq(adapter, &crq); |
2678 | ||
2679 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); | |
901e040a | 2680 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2681 | ibmvnic_send_crq(adapter, &crq); |
2682 | ||
2683 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); | |
901e040a | 2684 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2685 | ibmvnic_send_crq(adapter, &crq); |
2686 | ||
2687 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); | |
901e040a | 2688 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2689 | ibmvnic_send_crq(adapter, &crq); |
2690 | ||
2691 | crq.query_capability.capability = | |
2692 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); | |
901e040a | 2693 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2694 | ibmvnic_send_crq(adapter, &crq); |
2695 | ||
2696 | crq.query_capability.capability = | |
2697 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 2698 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2699 | ibmvnic_send_crq(adapter, &crq); |
2700 | ||
2701 | crq.query_capability.capability = | |
2702 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); | |
901e040a | 2703 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2704 | ibmvnic_send_crq(adapter, &crq); |
2705 | ||
2706 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); | |
901e040a | 2707 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
2708 | ibmvnic_send_crq(adapter, &crq); |
2709 | } | |
2710 | ||
2711 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) | |
2712 | { | |
2713 | struct device *dev = &adapter->vdev->dev; | |
2714 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; | |
2715 | union ibmvnic_crq crq; | |
2716 | int i; | |
2717 | ||
2718 | dma_unmap_single(dev, adapter->ip_offload_tok, | |
2719 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); | |
2720 | ||
2721 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); | |
2722 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) | |
2723 | netdev_dbg(adapter->netdev, "%016lx\n", | |
2724 | ((unsigned long int *)(buf))[i]); | |
2725 | ||
2726 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); | |
2727 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); | |
2728 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", | |
2729 | buf->tcp_ipv4_chksum); | |
2730 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", | |
2731 | buf->tcp_ipv6_chksum); | |
2732 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", | |
2733 | buf->udp_ipv4_chksum); | |
2734 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", | |
2735 | buf->udp_ipv6_chksum); | |
2736 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", | |
2737 | buf->large_tx_ipv4); | |
2738 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", | |
2739 | buf->large_tx_ipv6); | |
2740 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", | |
2741 | buf->large_rx_ipv4); | |
2742 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", | |
2743 | buf->large_rx_ipv6); | |
2744 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", | |
2745 | buf->max_ipv4_header_size); | |
2746 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", | |
2747 | buf->max_ipv6_header_size); | |
2748 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", | |
2749 | buf->max_tcp_header_size); | |
2750 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", | |
2751 | buf->max_udp_header_size); | |
2752 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", | |
2753 | buf->max_large_tx_size); | |
2754 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", | |
2755 | buf->max_large_rx_size); | |
2756 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", | |
2757 | buf->ipv6_extension_header); | |
2758 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", | |
2759 | buf->tcp_pseudosum_req); | |
2760 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", | |
2761 | buf->num_ipv6_ext_headers); | |
2762 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", | |
2763 | buf->off_ipv6_ext_headers); | |
2764 | ||
2765 | adapter->ip_offload_ctrl_tok = | |
2766 | dma_map_single(dev, &adapter->ip_offload_ctrl, | |
2767 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); | |
2768 | ||
2769 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { | |
2770 | dev_err(dev, "Couldn't map ip offload control buffer\n"); | |
2771 | return; | |
2772 | } | |
2773 | ||
2774 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); | |
2775 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; | |
2776 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; | |
2777 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; | |
2778 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; | |
2779 | ||
2780 | /* large_tx/rx disabled for now, additional features needed */ | |
2781 | adapter->ip_offload_ctrl.large_tx_ipv4 = 0; | |
2782 | adapter->ip_offload_ctrl.large_tx_ipv6 = 0; | |
2783 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; | |
2784 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; | |
2785 | ||
2786 | adapter->netdev->features = NETIF_F_GSO; | |
2787 | ||
2788 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) | |
2789 | adapter->netdev->features |= NETIF_F_IP_CSUM; | |
2790 | ||
2791 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) | |
2792 | adapter->netdev->features |= NETIF_F_IPV6_CSUM; | |
2793 | ||
9be02cdf TF |
2794 | if ((adapter->netdev->features & |
2795 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) | |
2796 | adapter->netdev->features |= NETIF_F_RXCSUM; | |
2797 | ||
032c5e82 TF |
2798 | memset(&crq, 0, sizeof(crq)); |
2799 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; | |
2800 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; | |
2801 | crq.control_ip_offload.len = | |
2802 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
2803 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); | |
2804 | ibmvnic_send_crq(adapter, &crq); | |
2805 | } | |
2806 | ||
2807 | static void handle_error_info_rsp(union ibmvnic_crq *crq, | |
2808 | struct ibmvnic_adapter *adapter) | |
2809 | { | |
2810 | struct device *dev = &adapter->vdev->dev; | |
96183182 | 2811 | struct ibmvnic_error_buff *error_buff, *tmp; |
032c5e82 TF |
2812 | unsigned long flags; |
2813 | bool found = false; | |
2814 | int i; | |
2815 | ||
2816 | if (!crq->request_error_rsp.rc.code) { | |
2817 | dev_info(dev, "Request Error Rsp returned with rc=%x\n", | |
2818 | crq->request_error_rsp.rc.code); | |
2819 | return; | |
2820 | } | |
2821 | ||
2822 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
96183182 | 2823 | list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) |
032c5e82 TF |
2824 | if (error_buff->error_id == crq->request_error_rsp.error_id) { |
2825 | found = true; | |
2826 | list_del(&error_buff->list); | |
2827 | break; | |
2828 | } | |
2829 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2830 | ||
2831 | if (!found) { | |
2832 | dev_err(dev, "Couldn't find error id %x\n", | |
75224c93 | 2833 | be32_to_cpu(crq->request_error_rsp.error_id)); |
032c5e82 TF |
2834 | return; |
2835 | } | |
2836 | ||
2837 | dev_err(dev, "Detailed info for error id %x:", | |
75224c93 | 2838 | be32_to_cpu(crq->request_error_rsp.error_id)); |
032c5e82 TF |
2839 | |
2840 | for (i = 0; i < error_buff->len; i++) { | |
2841 | pr_cont("%02x", (int)error_buff->buff[i]); | |
2842 | if (i % 8 == 7) | |
2843 | pr_cont(" "); | |
2844 | } | |
2845 | pr_cont("\n"); | |
2846 | ||
2847 | dma_unmap_single(dev, error_buff->dma, error_buff->len, | |
2848 | DMA_FROM_DEVICE); | |
2849 | kfree(error_buff->buff); | |
2850 | kfree(error_buff); | |
2851 | } | |
2852 | ||
2f9de9ba NF |
2853 | static void request_error_information(struct ibmvnic_adapter *adapter, |
2854 | union ibmvnic_crq *err_crq) | |
032c5e82 | 2855 | { |
032c5e82 | 2856 | struct device *dev = &adapter->vdev->dev; |
2f9de9ba | 2857 | struct net_device *netdev = adapter->netdev; |
032c5e82 | 2858 | struct ibmvnic_error_buff *error_buff; |
2f9de9ba NF |
2859 | unsigned long timeout = msecs_to_jiffies(30000); |
2860 | union ibmvnic_crq crq; | |
032c5e82 | 2861 | unsigned long flags; |
2f9de9ba | 2862 | int rc, detail_len; |
032c5e82 TF |
2863 | |
2864 | error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC); | |
2865 | if (!error_buff) | |
2866 | return; | |
2867 | ||
2f9de9ba | 2868 | detail_len = be32_to_cpu(err_crq->error_indication.detail_error_sz); |
032c5e82 TF |
2869 | error_buff->buff = kmalloc(detail_len, GFP_ATOMIC); |
2870 | if (!error_buff->buff) { | |
2871 | kfree(error_buff); | |
2872 | return; | |
2873 | } | |
2874 | ||
2875 | error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len, | |
2876 | DMA_FROM_DEVICE); | |
2877 | if (dma_mapping_error(dev, error_buff->dma)) { | |
2f9de9ba | 2878 | netdev_err(netdev, "Couldn't map error buffer\n"); |
032c5e82 TF |
2879 | kfree(error_buff->buff); |
2880 | kfree(error_buff); | |
2881 | return; | |
2882 | } | |
2883 | ||
032c5e82 | 2884 | error_buff->len = detail_len; |
2f9de9ba | 2885 | error_buff->error_id = err_crq->error_indication.error_id; |
032c5e82 TF |
2886 | |
2887 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
2888 | list_add_tail(&error_buff->list, &adapter->errors); | |
2889 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2890 | ||
2f9de9ba NF |
2891 | memset(&crq, 0, sizeof(crq)); |
2892 | crq.request_error_info.first = IBMVNIC_CRQ_CMD; | |
2893 | crq.request_error_info.cmd = REQUEST_ERROR_INFO; | |
2894 | crq.request_error_info.ioba = cpu_to_be32(error_buff->dma); | |
2895 | crq.request_error_info.len = cpu_to_be32(detail_len); | |
2896 | crq.request_error_info.error_id = err_crq->error_indication.error_id; | |
2897 | ||
2898 | rc = ibmvnic_send_crq(adapter, &crq); | |
2899 | if (rc) { | |
2900 | netdev_err(netdev, "failed to request error information\n"); | |
2901 | goto err_info_fail; | |
2902 | } | |
2903 | ||
2904 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
2905 | netdev_err(netdev, "timeout waiting for error information\n"); | |
2906 | goto err_info_fail; | |
2907 | } | |
2908 | ||
2909 | return; | |
2910 | ||
2911 | err_info_fail: | |
2912 | spin_lock_irqsave(&adapter->error_list_lock, flags); | |
2913 | list_del(&error_buff->list); | |
2914 | spin_unlock_irqrestore(&adapter->error_list_lock, flags); | |
2915 | ||
2916 | kfree(error_buff->buff); | |
2917 | kfree(error_buff); | |
2918 | } | |
2919 | ||
2920 | static void handle_error_indication(union ibmvnic_crq *crq, | |
2921 | struct ibmvnic_adapter *adapter) | |
2922 | { | |
2923 | struct device *dev = &adapter->vdev->dev; | |
2924 | ||
2925 | dev_err(dev, "Firmware reports %serror id %x, cause %d\n", | |
2926 | crq->error_indication.flags | |
2927 | & IBMVNIC_FATAL_ERROR ? "FATAL " : "", | |
2928 | be32_to_cpu(crq->error_indication.error_id), | |
2929 | be16_to_cpu(crq->error_indication.error_cause)); | |
2930 | ||
2931 | if (be32_to_cpu(crq->error_indication.error_id)) | |
2932 | request_error_information(adapter, crq); | |
ed651a10 NF |
2933 | |
2934 | if (crq->error_indication.flags & IBMVNIC_FATAL_ERROR) | |
2935 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); | |
8cb31cfc JA |
2936 | else |
2937 | ibmvnic_reset(adapter, VNIC_RESET_NON_FATAL); | |
032c5e82 TF |
2938 | } |
2939 | ||
2940 | static void handle_change_mac_rsp(union ibmvnic_crq *crq, | |
2941 | struct ibmvnic_adapter *adapter) | |
2942 | { | |
2943 | struct net_device *netdev = adapter->netdev; | |
2944 | struct device *dev = &adapter->vdev->dev; | |
2945 | long rc; | |
2946 | ||
2947 | rc = crq->change_mac_addr_rsp.rc.code; | |
2948 | if (rc) { | |
2949 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); | |
2950 | return; | |
2951 | } | |
2952 | memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], | |
2953 | ETH_ALEN); | |
2954 | } | |
2955 | ||
2956 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, | |
2957 | struct ibmvnic_adapter *adapter) | |
2958 | { | |
2959 | struct device *dev = &adapter->vdev->dev; | |
2960 | u64 *req_value; | |
2961 | char *name; | |
2962 | ||
901e040a | 2963 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 TF |
2964 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { |
2965 | case REQ_TX_QUEUES: | |
2966 | req_value = &adapter->req_tx_queues; | |
2967 | name = "tx"; | |
2968 | break; | |
2969 | case REQ_RX_QUEUES: | |
2970 | req_value = &adapter->req_rx_queues; | |
2971 | name = "rx"; | |
2972 | break; | |
2973 | case REQ_RX_ADD_QUEUES: | |
2974 | req_value = &adapter->req_rx_add_queues; | |
2975 | name = "rx_add"; | |
2976 | break; | |
2977 | case REQ_TX_ENTRIES_PER_SUBCRQ: | |
2978 | req_value = &adapter->req_tx_entries_per_subcrq; | |
2979 | name = "tx_entries_per_subcrq"; | |
2980 | break; | |
2981 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: | |
2982 | req_value = &adapter->req_rx_add_entries_per_subcrq; | |
2983 | name = "rx_add_entries_per_subcrq"; | |
2984 | break; | |
2985 | case REQ_MTU: | |
2986 | req_value = &adapter->req_mtu; | |
2987 | name = "mtu"; | |
2988 | break; | |
2989 | case PROMISC_REQUESTED: | |
2990 | req_value = &adapter->promisc; | |
2991 | name = "promisc"; | |
2992 | break; | |
2993 | default: | |
2994 | dev_err(dev, "Got invalid cap request rsp %d\n", | |
2995 | crq->request_capability.capability); | |
2996 | return; | |
2997 | } | |
2998 | ||
2999 | switch (crq->request_capability_rsp.rc.code) { | |
3000 | case SUCCESS: | |
3001 | break; | |
3002 | case PARTIALSUCCESS: | |
3003 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", | |
3004 | *req_value, | |
28f4d165 | 3005 | (long int)be64_to_cpu(crq->request_capability_rsp. |
032c5e82 | 3006 | number), name); |
b510888f | 3007 | release_sub_crqs(adapter); |
28f4d165 | 3008 | *req_value = be64_to_cpu(crq->request_capability_rsp.number); |
d346b9bc | 3009 | ibmvnic_send_req_caps(adapter, 1); |
032c5e82 TF |
3010 | return; |
3011 | default: | |
3012 | dev_err(dev, "Error %d in request cap rsp\n", | |
3013 | crq->request_capability_rsp.rc.code); | |
3014 | return; | |
3015 | } | |
3016 | ||
3017 | /* Done receiving requested capabilities, query IP offload support */ | |
901e040a | 3018 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
032c5e82 TF |
3019 | union ibmvnic_crq newcrq; |
3020 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); | |
3021 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = | |
3022 | &adapter->ip_offload_buf; | |
3023 | ||
249168ad | 3024 | adapter->wait_capability = false; |
032c5e82 TF |
3025 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, |
3026 | buf_sz, | |
3027 | DMA_FROM_DEVICE); | |
3028 | ||
3029 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { | |
3030 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
3031 | dev_err(dev, "Couldn't map offload buffer\n"); | |
3032 | return; | |
3033 | } | |
3034 | ||
3035 | memset(&newcrq, 0, sizeof(newcrq)); | |
3036 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; | |
3037 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; | |
3038 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); | |
3039 | newcrq.query_ip_offload.ioba = | |
3040 | cpu_to_be32(adapter->ip_offload_tok); | |
3041 | ||
3042 | ibmvnic_send_crq(adapter, &newcrq); | |
3043 | } | |
3044 | } | |
3045 | ||
3046 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, | |
3047 | struct ibmvnic_adapter *adapter) | |
3048 | { | |
3049 | struct device *dev = &adapter->vdev->dev; | |
3050 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; | |
3051 | struct ibmvnic_login_buffer *login = adapter->login_buf; | |
032c5e82 TF |
3052 | int i; |
3053 | ||
3054 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, | |
3055 | DMA_BIDIRECTIONAL); | |
3056 | dma_unmap_single(dev, adapter->login_rsp_buf_token, | |
3057 | adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); | |
3058 | ||
498cd8e4 JA |
3059 | /* If the number of queues requested can't be allocated by the |
3060 | * server, the login response will return with code 1. We will need | |
3061 | * to resend the login buffer with fewer queues requested. | |
3062 | */ | |
3063 | if (login_rsp_crq->generic.rc.code) { | |
3064 | adapter->renegotiate = true; | |
3065 | complete(&adapter->init_done); | |
3066 | return 0; | |
3067 | } | |
3068 | ||
032c5e82 TF |
3069 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
3070 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { | |
3071 | netdev_dbg(adapter->netdev, "%016lx\n", | |
3072 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); | |
3073 | } | |
3074 | ||
3075 | /* Sanity checks */ | |
3076 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || | |
3077 | (be32_to_cpu(login->num_rxcomp_subcrqs) * | |
3078 | adapter->req_rx_add_queues != | |
3079 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { | |
3080 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); | |
3081 | ibmvnic_remove(adapter->vdev); | |
3082 | return -EIO; | |
3083 | } | |
3084 | complete(&adapter->init_done); | |
3085 | ||
032c5e82 TF |
3086 | return 0; |
3087 | } | |
3088 | ||
032c5e82 TF |
3089 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, |
3090 | struct ibmvnic_adapter *adapter) | |
3091 | { | |
3092 | struct device *dev = &adapter->vdev->dev; | |
3093 | long rc; | |
3094 | ||
3095 | rc = crq->request_unmap_rsp.rc.code; | |
3096 | if (rc) | |
3097 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); | |
3098 | } | |
3099 | ||
3100 | static void handle_query_map_rsp(union ibmvnic_crq *crq, | |
3101 | struct ibmvnic_adapter *adapter) | |
3102 | { | |
3103 | struct net_device *netdev = adapter->netdev; | |
3104 | struct device *dev = &adapter->vdev->dev; | |
3105 | long rc; | |
3106 | ||
3107 | rc = crq->query_map_rsp.rc.code; | |
3108 | if (rc) { | |
3109 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); | |
3110 | return; | |
3111 | } | |
3112 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", | |
3113 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, | |
3114 | crq->query_map_rsp.free_pages); | |
3115 | } | |
3116 | ||
3117 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, | |
3118 | struct ibmvnic_adapter *adapter) | |
3119 | { | |
3120 | struct net_device *netdev = adapter->netdev; | |
3121 | struct device *dev = &adapter->vdev->dev; | |
3122 | long rc; | |
3123 | ||
901e040a | 3124 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 | 3125 | netdev_dbg(netdev, "Outstanding queries: %d\n", |
901e040a | 3126 | atomic_read(&adapter->running_cap_crqs)); |
032c5e82 TF |
3127 | rc = crq->query_capability.rc.code; |
3128 | if (rc) { | |
3129 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); | |
3130 | goto out; | |
3131 | } | |
3132 | ||
3133 | switch (be16_to_cpu(crq->query_capability.capability)) { | |
3134 | case MIN_TX_QUEUES: | |
3135 | adapter->min_tx_queues = | |
de89e854 | 3136 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3137 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
3138 | adapter->min_tx_queues); | |
3139 | break; | |
3140 | case MIN_RX_QUEUES: | |
3141 | adapter->min_rx_queues = | |
de89e854 | 3142 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3143 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
3144 | adapter->min_rx_queues); | |
3145 | break; | |
3146 | case MIN_RX_ADD_QUEUES: | |
3147 | adapter->min_rx_add_queues = | |
de89e854 | 3148 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3149 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
3150 | adapter->min_rx_add_queues); | |
3151 | break; | |
3152 | case MAX_TX_QUEUES: | |
3153 | adapter->max_tx_queues = | |
de89e854 | 3154 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3155 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
3156 | adapter->max_tx_queues); | |
3157 | break; | |
3158 | case MAX_RX_QUEUES: | |
3159 | adapter->max_rx_queues = | |
de89e854 | 3160 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3161 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
3162 | adapter->max_rx_queues); | |
3163 | break; | |
3164 | case MAX_RX_ADD_QUEUES: | |
3165 | adapter->max_rx_add_queues = | |
de89e854 | 3166 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3167 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
3168 | adapter->max_rx_add_queues); | |
3169 | break; | |
3170 | case MIN_TX_ENTRIES_PER_SUBCRQ: | |
3171 | adapter->min_tx_entries_per_subcrq = | |
de89e854 | 3172 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3173 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
3174 | adapter->min_tx_entries_per_subcrq); | |
3175 | break; | |
3176 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: | |
3177 | adapter->min_rx_add_entries_per_subcrq = | |
de89e854 | 3178 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3179 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
3180 | adapter->min_rx_add_entries_per_subcrq); | |
3181 | break; | |
3182 | case MAX_TX_ENTRIES_PER_SUBCRQ: | |
3183 | adapter->max_tx_entries_per_subcrq = | |
de89e854 | 3184 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3185 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
3186 | adapter->max_tx_entries_per_subcrq); | |
3187 | break; | |
3188 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: | |
3189 | adapter->max_rx_add_entries_per_subcrq = | |
de89e854 | 3190 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3191 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
3192 | adapter->max_rx_add_entries_per_subcrq); | |
3193 | break; | |
3194 | case TCP_IP_OFFLOAD: | |
3195 | adapter->tcp_ip_offload = | |
de89e854 | 3196 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3197 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
3198 | adapter->tcp_ip_offload); | |
3199 | break; | |
3200 | case PROMISC_SUPPORTED: | |
3201 | adapter->promisc_supported = | |
de89e854 | 3202 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3203 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
3204 | adapter->promisc_supported); | |
3205 | break; | |
3206 | case MIN_MTU: | |
de89e854 | 3207 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 3208 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
032c5e82 TF |
3209 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
3210 | break; | |
3211 | case MAX_MTU: | |
de89e854 | 3212 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 3213 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; |
032c5e82 TF |
3214 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
3215 | break; | |
3216 | case MAX_MULTICAST_FILTERS: | |
3217 | adapter->max_multicast_filters = | |
de89e854 | 3218 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3219 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
3220 | adapter->max_multicast_filters); | |
3221 | break; | |
3222 | case VLAN_HEADER_INSERTION: | |
3223 | adapter->vlan_header_insertion = | |
de89e854 | 3224 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3225 | if (adapter->vlan_header_insertion) |
3226 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; | |
3227 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", | |
3228 | adapter->vlan_header_insertion); | |
3229 | break; | |
6052d5e2 MFV |
3230 | case RX_VLAN_HEADER_INSERTION: |
3231 | adapter->rx_vlan_header_insertion = | |
3232 | be64_to_cpu(crq->query_capability.number); | |
3233 | netdev_dbg(netdev, "rx_vlan_header_insertion = %lld\n", | |
3234 | adapter->rx_vlan_header_insertion); | |
3235 | break; | |
032c5e82 TF |
3236 | case MAX_TX_SG_ENTRIES: |
3237 | adapter->max_tx_sg_entries = | |
de89e854 | 3238 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3239 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
3240 | adapter->max_tx_sg_entries); | |
3241 | break; | |
3242 | case RX_SG_SUPPORTED: | |
3243 | adapter->rx_sg_supported = | |
de89e854 | 3244 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3245 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
3246 | adapter->rx_sg_supported); | |
3247 | break; | |
3248 | case OPT_TX_COMP_SUB_QUEUES: | |
3249 | adapter->opt_tx_comp_sub_queues = | |
de89e854 | 3250 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3251 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
3252 | adapter->opt_tx_comp_sub_queues); | |
3253 | break; | |
3254 | case OPT_RX_COMP_QUEUES: | |
3255 | adapter->opt_rx_comp_queues = | |
de89e854 | 3256 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3257 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
3258 | adapter->opt_rx_comp_queues); | |
3259 | break; | |
3260 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: | |
3261 | adapter->opt_rx_bufadd_q_per_rx_comp_q = | |
de89e854 | 3262 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3263 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
3264 | adapter->opt_rx_bufadd_q_per_rx_comp_q); | |
3265 | break; | |
3266 | case OPT_TX_ENTRIES_PER_SUBCRQ: | |
3267 | adapter->opt_tx_entries_per_subcrq = | |
de89e854 | 3268 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3269 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
3270 | adapter->opt_tx_entries_per_subcrq); | |
3271 | break; | |
3272 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: | |
3273 | adapter->opt_rxba_entries_per_subcrq = | |
de89e854 | 3274 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
3275 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
3276 | adapter->opt_rxba_entries_per_subcrq); | |
3277 | break; | |
3278 | case TX_RX_DESC_REQ: | |
3279 | adapter->tx_rx_desc_req = crq->query_capability.number; | |
3280 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", | |
3281 | adapter->tx_rx_desc_req); | |
3282 | break; | |
3283 | ||
3284 | default: | |
3285 | netdev_err(netdev, "Got invalid cap rsp %d\n", | |
3286 | crq->query_capability.capability); | |
3287 | } | |
3288 | ||
3289 | out: | |
249168ad TF |
3290 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
3291 | adapter->wait_capability = false; | |
d346b9bc | 3292 | ibmvnic_send_req_caps(adapter, 0); |
249168ad | 3293 | } |
032c5e82 TF |
3294 | } |
3295 | ||
032c5e82 TF |
3296 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, |
3297 | struct ibmvnic_adapter *adapter) | |
3298 | { | |
3299 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; | |
3300 | struct net_device *netdev = adapter->netdev; | |
3301 | struct device *dev = &adapter->vdev->dev; | |
993a82b0 | 3302 | u64 *u64_crq = (u64 *)crq; |
032c5e82 TF |
3303 | long rc; |
3304 | ||
3305 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", | |
993a82b0 MFV |
3306 | (unsigned long int)cpu_to_be64(u64_crq[0]), |
3307 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
032c5e82 TF |
3308 | switch (gen_crq->first) { |
3309 | case IBMVNIC_CRQ_INIT_RSP: | |
3310 | switch (gen_crq->cmd) { | |
3311 | case IBMVNIC_CRQ_INIT: | |
3312 | dev_info(dev, "Partner initialized\n"); | |
017892c1 JA |
3313 | adapter->from_passive_init = true; |
3314 | complete(&adapter->init_done); | |
032c5e82 TF |
3315 | break; |
3316 | case IBMVNIC_CRQ_INIT_COMPLETE: | |
3317 | dev_info(dev, "Partner initialization complete\n"); | |
3318 | send_version_xchg(adapter); | |
3319 | break; | |
3320 | default: | |
3321 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); | |
3322 | } | |
3323 | return; | |
3324 | case IBMVNIC_CRQ_XPORT_EVENT: | |
ed651a10 | 3325 | netif_carrier_off(netdev); |
032c5e82 | 3326 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { |
ed651a10 NF |
3327 | dev_info(dev, "Migrated, re-enabling adapter\n"); |
3328 | ibmvnic_reset(adapter, VNIC_RESET_MOBILITY); | |
dfad09a6 TF |
3329 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
3330 | dev_info(dev, "Backing device failover detected\n"); | |
ed651a10 | 3331 | ibmvnic_reset(adapter, VNIC_RESET_FAILOVER); |
032c5e82 TF |
3332 | } else { |
3333 | /* The adapter lost the connection */ | |
3334 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", | |
3335 | gen_crq->cmd); | |
ed651a10 | 3336 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); |
032c5e82 TF |
3337 | } |
3338 | return; | |
3339 | case IBMVNIC_CRQ_CMD_RSP: | |
3340 | break; | |
3341 | default: | |
3342 | dev_err(dev, "Got an invalid msg type 0x%02x\n", | |
3343 | gen_crq->first); | |
3344 | return; | |
3345 | } | |
3346 | ||
3347 | switch (gen_crq->cmd) { | |
3348 | case VERSION_EXCHANGE_RSP: | |
3349 | rc = crq->version_exchange_rsp.rc.code; | |
3350 | if (rc) { | |
3351 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); | |
3352 | break; | |
3353 | } | |
3354 | dev_info(dev, "Partner protocol version is %d\n", | |
3355 | crq->version_exchange_rsp.version); | |
3356 | if (be16_to_cpu(crq->version_exchange_rsp.version) < | |
3357 | ibmvnic_version) | |
3358 | ibmvnic_version = | |
3359 | be16_to_cpu(crq->version_exchange_rsp.version); | |
3360 | send_cap_queries(adapter); | |
3361 | break; | |
3362 | case QUERY_CAPABILITY_RSP: | |
3363 | handle_query_cap_rsp(crq, adapter); | |
3364 | break; | |
3365 | case QUERY_MAP_RSP: | |
3366 | handle_query_map_rsp(crq, adapter); | |
3367 | break; | |
3368 | case REQUEST_MAP_RSP: | |
f3be0cbc TF |
3369 | adapter->fw_done_rc = crq->request_map_rsp.rc.code; |
3370 | complete(&adapter->fw_done); | |
032c5e82 TF |
3371 | break; |
3372 | case REQUEST_UNMAP_RSP: | |
3373 | handle_request_unmap_rsp(crq, adapter); | |
3374 | break; | |
3375 | case REQUEST_CAPABILITY_RSP: | |
3376 | handle_request_cap_rsp(crq, adapter); | |
3377 | break; | |
3378 | case LOGIN_RSP: | |
3379 | netdev_dbg(netdev, "Got Login Response\n"); | |
3380 | handle_login_rsp(crq, adapter); | |
3381 | break; | |
3382 | case LOGICAL_LINK_STATE_RSP: | |
53da09e9 NF |
3383 | netdev_dbg(netdev, |
3384 | "Got Logical Link State Response, state: %d rc: %d\n", | |
3385 | crq->logical_link_state_rsp.link_state, | |
3386 | crq->logical_link_state_rsp.rc.code); | |
032c5e82 TF |
3387 | adapter->logical_link_state = |
3388 | crq->logical_link_state_rsp.link_state; | |
53da09e9 NF |
3389 | adapter->init_done_rc = crq->logical_link_state_rsp.rc.code; |
3390 | complete(&adapter->init_done); | |
032c5e82 TF |
3391 | break; |
3392 | case LINK_STATE_INDICATION: | |
3393 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); | |
3394 | adapter->phys_link_state = | |
3395 | crq->link_state_indication.phys_link_state; | |
3396 | adapter->logical_link_state = | |
3397 | crq->link_state_indication.logical_link_state; | |
3398 | break; | |
3399 | case CHANGE_MAC_ADDR_RSP: | |
3400 | netdev_dbg(netdev, "Got MAC address change Response\n"); | |
3401 | handle_change_mac_rsp(crq, adapter); | |
3402 | break; | |
3403 | case ERROR_INDICATION: | |
3404 | netdev_dbg(netdev, "Got Error Indication\n"); | |
3405 | handle_error_indication(crq, adapter); | |
3406 | break; | |
3407 | case REQUEST_ERROR_RSP: | |
3408 | netdev_dbg(netdev, "Got Error Detail Response\n"); | |
3409 | handle_error_info_rsp(crq, adapter); | |
3410 | break; | |
3411 | case REQUEST_STATISTICS_RSP: | |
3412 | netdev_dbg(netdev, "Got Statistics Response\n"); | |
3413 | complete(&adapter->stats_done); | |
3414 | break; | |
032c5e82 TF |
3415 | case QUERY_IP_OFFLOAD_RSP: |
3416 | netdev_dbg(netdev, "Got Query IP offload Response\n"); | |
3417 | handle_query_ip_offload_rsp(adapter); | |
3418 | break; | |
3419 | case MULTICAST_CTRL_RSP: | |
3420 | netdev_dbg(netdev, "Got multicast control Response\n"); | |
3421 | break; | |
3422 | case CONTROL_IP_OFFLOAD_RSP: | |
3423 | netdev_dbg(netdev, "Got Control IP offload Response\n"); | |
3424 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, | |
3425 | sizeof(adapter->ip_offload_ctrl), | |
3426 | DMA_TO_DEVICE); | |
bd0b6723 | 3427 | complete(&adapter->init_done); |
032c5e82 | 3428 | break; |
032c5e82 TF |
3429 | case COLLECT_FW_TRACE_RSP: |
3430 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); | |
3431 | complete(&adapter->fw_done); | |
3432 | break; | |
3433 | default: | |
3434 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", | |
3435 | gen_crq->cmd); | |
3436 | } | |
3437 | } | |
3438 | ||
3439 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) | |
3440 | { | |
3441 | struct ibmvnic_adapter *adapter = instance; | |
6c267b3d | 3442 | |
6c267b3d | 3443 | tasklet_schedule(&adapter->tasklet); |
6c267b3d TF |
3444 | return IRQ_HANDLED; |
3445 | } | |
3446 | ||
3447 | static void ibmvnic_tasklet(void *data) | |
3448 | { | |
3449 | struct ibmvnic_adapter *adapter = data; | |
032c5e82 | 3450 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
032c5e82 TF |
3451 | union ibmvnic_crq *crq; |
3452 | unsigned long flags; | |
3453 | bool done = false; | |
3454 | ||
3455 | spin_lock_irqsave(&queue->lock, flags); | |
032c5e82 TF |
3456 | while (!done) { |
3457 | /* Pull all the valid messages off the CRQ */ | |
3458 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { | |
3459 | ibmvnic_handle_crq(crq, adapter); | |
3460 | crq->generic.first = 0; | |
3461 | } | |
ed7ecbf7 BK |
3462 | |
3463 | /* remain in tasklet until all | |
3464 | * capabilities responses are received | |
3465 | */ | |
3466 | if (!adapter->wait_capability) | |
3467 | done = true; | |
032c5e82 | 3468 | } |
249168ad TF |
3469 | /* if capabilities CRQ's were sent in this tasklet, the following |
3470 | * tasklet must wait until all responses are received | |
3471 | */ | |
3472 | if (atomic_read(&adapter->running_cap_crqs) != 0) | |
3473 | adapter->wait_capability = true; | |
032c5e82 | 3474 | spin_unlock_irqrestore(&queue->lock, flags); |
032c5e82 TF |
3475 | } |
3476 | ||
3477 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) | |
3478 | { | |
3479 | struct vio_dev *vdev = adapter->vdev; | |
3480 | int rc; | |
3481 | ||
3482 | do { | |
3483 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); | |
3484 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3485 | ||
3486 | if (rc) | |
3487 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); | |
3488 | ||
3489 | return rc; | |
3490 | } | |
3491 | ||
3492 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) | |
3493 | { | |
3494 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3495 | struct device *dev = &adapter->vdev->dev; | |
3496 | struct vio_dev *vdev = adapter->vdev; | |
3497 | int rc; | |
3498 | ||
3499 | /* Close the CRQ */ | |
3500 | do { | |
3501 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3502 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3503 | ||
3504 | /* Clean out the queue */ | |
3505 | memset(crq->msgs, 0, PAGE_SIZE); | |
3506 | crq->cur = 0; | |
3507 | ||
3508 | /* And re-open it again */ | |
3509 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3510 | crq->msg_token, PAGE_SIZE); | |
3511 | ||
3512 | if (rc == H_CLOSED) | |
3513 | /* Adapter is good, but other end is not ready */ | |
3514 | dev_warn(dev, "Partner adapter not ready\n"); | |
3515 | else if (rc != 0) | |
3516 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); | |
3517 | ||
3518 | return rc; | |
3519 | } | |
3520 | ||
f992887c | 3521 | static void release_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3522 | { |
3523 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3524 | struct vio_dev *vdev = adapter->vdev; | |
3525 | long rc; | |
3526 | ||
f992887c NF |
3527 | if (!crq->msgs) |
3528 | return; | |
3529 | ||
032c5e82 TF |
3530 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); |
3531 | free_irq(vdev->irq, adapter); | |
6c267b3d | 3532 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
3533 | do { |
3534 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3535 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3536 | ||
3537 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, | |
3538 | DMA_BIDIRECTIONAL); | |
3539 | free_page((unsigned long)crq->msgs); | |
f992887c | 3540 | crq->msgs = NULL; |
032c5e82 TF |
3541 | } |
3542 | ||
f992887c | 3543 | static int init_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3544 | { |
3545 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
3546 | struct device *dev = &adapter->vdev->dev; | |
3547 | struct vio_dev *vdev = adapter->vdev; | |
3548 | int rc, retrc = -ENOMEM; | |
3549 | ||
f992887c NF |
3550 | if (crq->msgs) |
3551 | return 0; | |
3552 | ||
032c5e82 TF |
3553 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); |
3554 | /* Should we allocate more than one page? */ | |
3555 | ||
3556 | if (!crq->msgs) | |
3557 | return -ENOMEM; | |
3558 | ||
3559 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); | |
3560 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, | |
3561 | DMA_BIDIRECTIONAL); | |
3562 | if (dma_mapping_error(dev, crq->msg_token)) | |
3563 | goto map_failed; | |
3564 | ||
3565 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
3566 | crq->msg_token, PAGE_SIZE); | |
3567 | ||
3568 | if (rc == H_RESOURCE) | |
3569 | /* maybe kexecing and resource is busy. try a reset */ | |
3570 | rc = ibmvnic_reset_crq(adapter); | |
3571 | retrc = rc; | |
3572 | ||
3573 | if (rc == H_CLOSED) { | |
3574 | dev_warn(dev, "Partner adapter not ready\n"); | |
3575 | } else if (rc) { | |
3576 | dev_warn(dev, "Error %d opening adapter\n", rc); | |
3577 | goto reg_crq_failed; | |
3578 | } | |
3579 | ||
3580 | retrc = 0; | |
3581 | ||
6c267b3d TF |
3582 | tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet, |
3583 | (unsigned long)adapter); | |
3584 | ||
032c5e82 TF |
3585 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); |
3586 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, | |
3587 | adapter); | |
3588 | if (rc) { | |
3589 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", | |
3590 | vdev->irq, rc); | |
3591 | goto req_irq_failed; | |
3592 | } | |
3593 | ||
3594 | rc = vio_enable_interrupts(vdev); | |
3595 | if (rc) { | |
3596 | dev_err(dev, "Error %d enabling interrupts\n", rc); | |
3597 | goto req_irq_failed; | |
3598 | } | |
3599 | ||
3600 | crq->cur = 0; | |
3601 | spin_lock_init(&crq->lock); | |
3602 | ||
3603 | return retrc; | |
3604 | ||
3605 | req_irq_failed: | |
6c267b3d | 3606 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
3607 | do { |
3608 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
3609 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
3610 | reg_crq_failed: | |
3611 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
3612 | map_failed: | |
3613 | free_page((unsigned long)crq->msgs); | |
f992887c | 3614 | crq->msgs = NULL; |
032c5e82 TF |
3615 | return retrc; |
3616 | } | |
3617 | ||
f6ef6408 | 3618 | static int ibmvnic_init(struct ibmvnic_adapter *adapter) |
032c5e82 | 3619 | { |
f6ef6408 | 3620 | struct device *dev = &adapter->vdev->dev; |
ea22d51a | 3621 | unsigned long timeout = msecs_to_jiffies(30000); |
f6ef6408 JA |
3622 | int rc; |
3623 | ||
28cde751 NF |
3624 | if (adapter->resetting) { |
3625 | rc = ibmvnic_reset_crq(adapter); | |
3626 | if (!rc) | |
3627 | rc = vio_enable_interrupts(adapter->vdev); | |
3628 | } else { | |
3629 | rc = init_crq_queue(adapter); | |
3630 | } | |
3631 | ||
f6ef6408 JA |
3632 | if (rc) { |
3633 | dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); | |
3634 | return rc; | |
3635 | } | |
3636 | ||
017892c1 JA |
3637 | adapter->from_passive_init = false; |
3638 | ||
f6ef6408 | 3639 | init_completion(&adapter->init_done); |
6a2fb0e9 | 3640 | adapter->init_done_rc = 0; |
f6ef6408 JA |
3641 | ibmvnic_send_crq_init(adapter); |
3642 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
3643 | dev_err(dev, "Initialization sequence timed out\n"); | |
017892c1 JA |
3644 | return -1; |
3645 | } | |
3646 | ||
6a2fb0e9 NF |
3647 | if (adapter->init_done_rc) { |
3648 | release_crq_queue(adapter); | |
3649 | return adapter->init_done_rc; | |
3650 | } | |
3651 | ||
017892c1 JA |
3652 | if (adapter->from_passive_init) { |
3653 | adapter->state = VNIC_OPEN; | |
3654 | adapter->from_passive_init = false; | |
f6ef6408 JA |
3655 | return -1; |
3656 | } | |
3657 | ||
57a49436 NF |
3658 | if (adapter->resetting) |
3659 | rc = reset_sub_crq_queues(adapter); | |
3660 | else | |
3661 | rc = init_sub_crqs(adapter); | |
1bb3c739 NF |
3662 | if (rc) { |
3663 | dev_err(dev, "Initialization of sub crqs failed\n"); | |
3664 | release_crq_queue(adapter); | |
5df969c3 TF |
3665 | return rc; |
3666 | } | |
3667 | ||
3668 | rc = init_sub_crq_irqs(adapter); | |
3669 | if (rc) { | |
3670 | dev_err(dev, "Failed to initialize sub crq irqs\n"); | |
3671 | release_crq_queue(adapter); | |
1bb3c739 NF |
3672 | } |
3673 | ||
3674 | return rc; | |
f6ef6408 JA |
3675 | } |
3676 | ||
40c9db8a TF |
3677 | static struct device_attribute dev_attr_failover; |
3678 | ||
f6ef6408 JA |
3679 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) |
3680 | { | |
032c5e82 TF |
3681 | struct ibmvnic_adapter *adapter; |
3682 | struct net_device *netdev; | |
3683 | unsigned char *mac_addr_p; | |
032c5e82 TF |
3684 | int rc; |
3685 | ||
3686 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", | |
3687 | dev->unit_address); | |
3688 | ||
3689 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, | |
3690 | VETH_MAC_ADDR, NULL); | |
3691 | if (!mac_addr_p) { | |
3692 | dev_err(&dev->dev, | |
3693 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", | |
3694 | __FILE__, __LINE__); | |
3695 | return 0; | |
3696 | } | |
3697 | ||
3698 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), | |
3699 | IBMVNIC_MAX_TX_QUEUES); | |
3700 | if (!netdev) | |
3701 | return -ENOMEM; | |
3702 | ||
3703 | adapter = netdev_priv(netdev); | |
90c8014c | 3704 | adapter->state = VNIC_PROBING; |
032c5e82 TF |
3705 | dev_set_drvdata(&dev->dev, netdev); |
3706 | adapter->vdev = dev; | |
3707 | adapter->netdev = netdev; | |
3708 | ||
3709 | ether_addr_copy(adapter->mac_addr, mac_addr_p); | |
3710 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); | |
3711 | netdev->irq = dev->irq; | |
3712 | netdev->netdev_ops = &ibmvnic_netdev_ops; | |
3713 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; | |
3714 | SET_NETDEV_DEV(netdev, &dev->dev); | |
3715 | ||
3716 | spin_lock_init(&adapter->stats_lock); | |
3717 | ||
032c5e82 | 3718 | INIT_LIST_HEAD(&adapter->errors); |
032c5e82 | 3719 | spin_lock_init(&adapter->error_list_lock); |
032c5e82 | 3720 | |
ed651a10 NF |
3721 | INIT_WORK(&adapter->ibmvnic_reset, __ibmvnic_reset); |
3722 | INIT_LIST_HEAD(&adapter->rwi_list); | |
3723 | mutex_init(&adapter->reset_lock); | |
3724 | mutex_init(&adapter->rwi_lock); | |
3725 | adapter->resetting = false; | |
3726 | ||
6a2fb0e9 NF |
3727 | do { |
3728 | rc = ibmvnic_init(adapter); | |
6d659237 | 3729 | if (rc && rc != EAGAIN) { |
6a2fb0e9 NF |
3730 | free_netdev(netdev); |
3731 | return rc; | |
3732 | } | |
3733 | } while (rc == EAGAIN); | |
032c5e82 | 3734 | |
f39f0d1e | 3735 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
032c5e82 | 3736 | |
40c9db8a TF |
3737 | rc = device_create_file(&dev->dev, &dev_attr_failover); |
3738 | if (rc) { | |
3739 | free_netdev(netdev); | |
3740 | return rc; | |
3741 | } | |
3742 | ||
032c5e82 TF |
3743 | rc = register_netdev(netdev); |
3744 | if (rc) { | |
3745 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); | |
40c9db8a | 3746 | device_remove_file(&dev->dev, &dev_attr_failover); |
f6ef6408 JA |
3747 | free_netdev(netdev); |
3748 | return rc; | |
032c5e82 TF |
3749 | } |
3750 | dev_info(&dev->dev, "ibmvnic registered\n"); | |
3751 | ||
90c8014c | 3752 | adapter->state = VNIC_PROBED; |
032c5e82 | 3753 | return 0; |
032c5e82 TF |
3754 | } |
3755 | ||
3756 | static int ibmvnic_remove(struct vio_dev *dev) | |
3757 | { | |
3758 | struct net_device *netdev = dev_get_drvdata(&dev->dev); | |
37489055 | 3759 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
032c5e82 | 3760 | |
90c8014c | 3761 | adapter->state = VNIC_REMOVING; |
032c5e82 | 3762 | unregister_netdev(netdev); |
ed651a10 | 3763 | mutex_lock(&adapter->reset_lock); |
37489055 NF |
3764 | |
3765 | release_resources(adapter); | |
3766 | release_sub_crqs(adapter); | |
3767 | release_crq_queue(adapter); | |
3768 | ||
90c8014c NF |
3769 | adapter->state = VNIC_REMOVED; |
3770 | ||
ed651a10 | 3771 | mutex_unlock(&adapter->reset_lock); |
40c9db8a | 3772 | device_remove_file(&dev->dev, &dev_attr_failover); |
032c5e82 TF |
3773 | free_netdev(netdev); |
3774 | dev_set_drvdata(&dev->dev, NULL); | |
3775 | ||
3776 | return 0; | |
3777 | } | |
3778 | ||
40c9db8a TF |
3779 | static ssize_t failover_store(struct device *dev, struct device_attribute *attr, |
3780 | const char *buf, size_t count) | |
3781 | { | |
3782 | struct net_device *netdev = dev_get_drvdata(dev); | |
3783 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3784 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
3785 | __be64 session_token; | |
3786 | long rc; | |
3787 | ||
3788 | if (!sysfs_streq(buf, "1")) | |
3789 | return -EINVAL; | |
3790 | ||
3791 | rc = plpar_hcall(H_VIOCTL, retbuf, adapter->vdev->unit_address, | |
3792 | H_GET_SESSION_TOKEN, 0, 0, 0); | |
3793 | if (rc) { | |
3794 | netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n", | |
3795 | rc); | |
3796 | return -EINVAL; | |
3797 | } | |
3798 | ||
3799 | session_token = (__be64)retbuf[0]; | |
3800 | netdev_dbg(netdev, "Initiating client failover, session id %llx\n", | |
3801 | be64_to_cpu(session_token)); | |
3802 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
3803 | H_SESSION_ERR_DETECTED, session_token, 0, 0); | |
3804 | if (rc) { | |
3805 | netdev_err(netdev, "Client initiated failover failed, rc %ld\n", | |
3806 | rc); | |
3807 | return -EINVAL; | |
3808 | } | |
3809 | ||
3810 | return count; | |
3811 | } | |
3812 | ||
3813 | static DEVICE_ATTR(failover, 0200, NULL, failover_store); | |
3814 | ||
032c5e82 TF |
3815 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) |
3816 | { | |
3817 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
3818 | struct ibmvnic_adapter *adapter; | |
3819 | struct iommu_table *tbl; | |
3820 | unsigned long ret = 0; | |
3821 | int i; | |
3822 | ||
3823 | tbl = get_iommu_table_base(&vdev->dev); | |
3824 | ||
3825 | /* netdev inits at probe time along with the structures we need below*/ | |
3826 | if (!netdev) | |
3827 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); | |
3828 | ||
3829 | adapter = netdev_priv(netdev); | |
3830 | ||
3831 | ret += PAGE_SIZE; /* the crq message queue */ | |
032c5e82 TF |
3832 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); |
3833 | ||
3834 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) | |
3835 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ | |
3836 | ||
3837 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
3838 | i++) | |
3839 | ret += adapter->rx_pool[i].size * | |
3840 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); | |
3841 | ||
3842 | return ret; | |
3843 | } | |
3844 | ||
3845 | static int ibmvnic_resume(struct device *dev) | |
3846 | { | |
3847 | struct net_device *netdev = dev_get_drvdata(dev); | |
3848 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
3849 | int i; | |
3850 | ||
cb89ba24 JA |
3851 | if (adapter->state != VNIC_OPEN) |
3852 | return 0; | |
3853 | ||
032c5e82 TF |
3854 | /* kick the interrupt handlers just in case we lost an interrupt */ |
3855 | for (i = 0; i < adapter->req_rx_queues; i++) | |
3856 | ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, | |
3857 | adapter->rx_scrq[i]); | |
3858 | ||
3859 | return 0; | |
3860 | } | |
3861 | ||
3862 | static struct vio_device_id ibmvnic_device_table[] = { | |
3863 | {"network", "IBM,vnic"}, | |
3864 | {"", "" } | |
3865 | }; | |
3866 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); | |
3867 | ||
3868 | static const struct dev_pm_ops ibmvnic_pm_ops = { | |
3869 | .resume = ibmvnic_resume | |
3870 | }; | |
3871 | ||
3872 | static struct vio_driver ibmvnic_driver = { | |
3873 | .id_table = ibmvnic_device_table, | |
3874 | .probe = ibmvnic_probe, | |
3875 | .remove = ibmvnic_remove, | |
3876 | .get_desired_dma = ibmvnic_get_desired_dma, | |
3877 | .name = ibmvnic_driver_name, | |
3878 | .pm = &ibmvnic_pm_ops, | |
3879 | }; | |
3880 | ||
3881 | /* module functions */ | |
3882 | static int __init ibmvnic_module_init(void) | |
3883 | { | |
3884 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, | |
3885 | IBMVNIC_DRIVER_VERSION); | |
3886 | ||
3887 | return vio_register_driver(&ibmvnic_driver); | |
3888 | } | |
3889 | ||
3890 | static void __exit ibmvnic_module_exit(void) | |
3891 | { | |
3892 | vio_unregister_driver(&ibmvnic_driver); | |
3893 | } | |
3894 | ||
3895 | module_init(ibmvnic_module_init); | |
3896 | module_exit(ibmvnic_module_exit); |