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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> | |
4eb50ceb | 62 | #include <linux/if_arp.h> |
032c5e82 TF |
63 | #include <linux/in.h> |
64 | #include <linux/ip.h> | |
ad7775dc | 65 | #include <linux/ipv6.h> |
032c5e82 TF |
66 | #include <linux/irq.h> |
67 | #include <linux/kthread.h> | |
68 | #include <linux/seq_file.h> | |
032c5e82 TF |
69 | #include <linux/interrupt.h> |
70 | #include <net/net_namespace.h> | |
71 | #include <asm/hvcall.h> | |
72 | #include <linux/atomic.h> | |
73 | #include <asm/vio.h> | |
74 | #include <asm/iommu.h> | |
75 | #include <linux/uaccess.h> | |
76 | #include <asm/firmware.h> | |
65dc6891 | 77 | #include <linux/workqueue.h> |
6052d5e2 | 78 | #include <linux/if_vlan.h> |
37798d02 | 79 | #include <linux/utsname.h> |
032c5e82 TF |
80 | |
81 | #include "ibmvnic.h" | |
82 | ||
83 | static const char ibmvnic_driver_name[] = "ibmvnic"; | |
84 | static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver"; | |
85 | ||
78b07ac1 | 86 | MODULE_AUTHOR("Santiago Leon"); |
032c5e82 TF |
87 | MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver"); |
88 | MODULE_LICENSE("GPL"); | |
89 | MODULE_VERSION(IBMVNIC_DRIVER_VERSION); | |
90 | ||
91 | static int ibmvnic_version = IBMVNIC_INITIAL_VERSION; | |
92 | static int ibmvnic_remove(struct vio_dev *); | |
d7c0ef36 | 93 | static void release_sub_crqs(struct ibmvnic_adapter *, bool); |
032c5e82 TF |
94 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); |
95 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); | |
96 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); | |
97 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); | |
98 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
99 | union sub_crq *sub_crq); | |
ad7775dc | 100 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
032c5e82 TF |
101 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
102 | static int enable_scrq_irq(struct ibmvnic_adapter *, | |
103 | struct ibmvnic_sub_crq_queue *); | |
104 | static int disable_scrq_irq(struct ibmvnic_adapter *, | |
105 | struct ibmvnic_sub_crq_queue *); | |
106 | static int pending_scrq(struct ibmvnic_adapter *, | |
107 | struct ibmvnic_sub_crq_queue *); | |
108 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, | |
109 | struct ibmvnic_sub_crq_queue *); | |
110 | static int ibmvnic_poll(struct napi_struct *napi, int data); | |
111 | static void send_map_query(struct ibmvnic_adapter *adapter); | |
9c4eaabd TF |
112 | static int send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); |
113 | static int send_request_unmap(struct ibmvnic_adapter *, u8); | |
20a8ab74 | 114 | static int send_login(struct ibmvnic_adapter *adapter); |
bd0b6723 | 115 | static void send_cap_queries(struct ibmvnic_adapter *adapter); |
4d96f12a | 116 | static int init_sub_crqs(struct ibmvnic_adapter *); |
bd0b6723 | 117 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter); |
ea5509f5 | 118 | static int ibmvnic_init(struct ibmvnic_adapter *); |
8a348450 | 119 | static int ibmvnic_reset_init(struct ibmvnic_adapter *); |
f992887c | 120 | static void release_crq_queue(struct ibmvnic_adapter *); |
c26eba03 | 121 | static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p); |
30f79625 | 122 | static int init_crq_queue(struct ibmvnic_adapter *adapter); |
032c5e82 TF |
123 | |
124 | struct ibmvnic_stat { | |
125 | char name[ETH_GSTRING_LEN]; | |
126 | int offset; | |
127 | }; | |
128 | ||
129 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ | |
130 | offsetof(struct ibmvnic_statistics, stat)) | |
131 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) | |
132 | ||
133 | static const struct ibmvnic_stat ibmvnic_stats[] = { | |
134 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, | |
135 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, | |
136 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, | |
137 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, | |
138 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, | |
139 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, | |
140 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, | |
141 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, | |
142 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, | |
143 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, | |
144 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, | |
145 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, | |
146 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, | |
147 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, | |
148 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, | |
149 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, | |
150 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, | |
151 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, | |
152 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, | |
153 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, | |
154 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, | |
155 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, | |
156 | }; | |
157 | ||
158 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, | |
159 | unsigned long length, unsigned long *number, | |
160 | unsigned long *irq) | |
161 | { | |
162 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
163 | long rc; | |
164 | ||
165 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); | |
166 | *number = retbuf[0]; | |
167 | *irq = retbuf[1]; | |
168 | ||
169 | return rc; | |
170 | } | |
171 | ||
032c5e82 TF |
172 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, |
173 | struct ibmvnic_long_term_buff *ltb, int size) | |
174 | { | |
175 | struct device *dev = &adapter->vdev->dev; | |
9c4eaabd | 176 | int rc; |
032c5e82 TF |
177 | |
178 | ltb->size = size; | |
179 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, | |
180 | GFP_KERNEL); | |
181 | ||
182 | if (!ltb->buff) { | |
183 | dev_err(dev, "Couldn't alloc long term buffer\n"); | |
184 | return -ENOMEM; | |
185 | } | |
186 | ltb->map_id = adapter->map_id; | |
187 | adapter->map_id++; | |
db5d0b59 NF |
188 | |
189 | init_completion(&adapter->fw_done); | |
9c4eaabd TF |
190 | rc = send_request_map(adapter, ltb->addr, |
191 | ltb->size, ltb->map_id); | |
192 | if (rc) { | |
193 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); | |
194 | return rc; | |
195 | } | |
032c5e82 | 196 | wait_for_completion(&adapter->fw_done); |
f3be0cbc TF |
197 | |
198 | if (adapter->fw_done_rc) { | |
199 | dev_err(dev, "Couldn't map long term buffer,rc = %d\n", | |
200 | adapter->fw_done_rc); | |
4cf2ddf3 | 201 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
f3be0cbc TF |
202 | return -1; |
203 | } | |
032c5e82 TF |
204 | return 0; |
205 | } | |
206 | ||
207 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, | |
208 | struct ibmvnic_long_term_buff *ltb) | |
209 | { | |
210 | struct device *dev = &adapter->vdev->dev; | |
211 | ||
c657e32c NF |
212 | if (!ltb->buff) |
213 | return; | |
214 | ||
ed651a10 NF |
215 | if (adapter->reset_reason != VNIC_RESET_FAILOVER && |
216 | adapter->reset_reason != VNIC_RESET_MOBILITY) | |
dfad09a6 | 217 | send_request_unmap(adapter, ltb->map_id); |
59af56c2 | 218 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
032c5e82 TF |
219 | } |
220 | ||
f3be0cbc TF |
221 | static int reset_long_term_buff(struct ibmvnic_adapter *adapter, |
222 | struct ibmvnic_long_term_buff *ltb) | |
223 | { | |
9c4eaabd TF |
224 | int rc; |
225 | ||
f3be0cbc TF |
226 | memset(ltb->buff, 0, ltb->size); |
227 | ||
228 | init_completion(&adapter->fw_done); | |
9c4eaabd TF |
229 | rc = send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id); |
230 | if (rc) | |
231 | return rc; | |
f3be0cbc TF |
232 | wait_for_completion(&adapter->fw_done); |
233 | ||
234 | if (adapter->fw_done_rc) { | |
235 | dev_info(&adapter->vdev->dev, | |
236 | "Reset failed, attempting to free and reallocate buffer\n"); | |
237 | free_long_term_buff(adapter, ltb); | |
238 | return alloc_long_term_buff(adapter, ltb, ltb->size); | |
239 | } | |
240 | return 0; | |
241 | } | |
242 | ||
f185a49a TF |
243 | static void deactivate_rx_pools(struct ibmvnic_adapter *adapter) |
244 | { | |
245 | int i; | |
246 | ||
247 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
248 | i++) | |
249 | adapter->rx_pool[i].active = 0; | |
250 | } | |
251 | ||
032c5e82 TF |
252 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, |
253 | struct ibmvnic_rx_pool *pool) | |
254 | { | |
255 | int count = pool->size - atomic_read(&pool->available); | |
256 | struct device *dev = &adapter->vdev->dev; | |
257 | int buffers_added = 0; | |
258 | unsigned long lpar_rc; | |
259 | union sub_crq sub_crq; | |
260 | struct sk_buff *skb; | |
261 | unsigned int offset; | |
262 | dma_addr_t dma_addr; | |
263 | unsigned char *dst; | |
264 | u64 *handle_array; | |
265 | int shift = 0; | |
266 | int index; | |
267 | int i; | |
268 | ||
f185a49a TF |
269 | if (!pool->active) |
270 | return; | |
271 | ||
032c5e82 TF |
272 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + |
273 | be32_to_cpu(adapter->login_rsp_buf-> | |
274 | off_rxadd_subcrqs)); | |
275 | ||
276 | for (i = 0; i < count; ++i) { | |
277 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
278 | if (!skb) { | |
279 | dev_err(dev, "Couldn't replenish rx buff\n"); | |
280 | adapter->replenish_no_mem++; | |
281 | break; | |
282 | } | |
283 | ||
284 | index = pool->free_map[pool->next_free]; | |
285 | ||
286 | if (pool->rx_buff[index].skb) | |
287 | dev_err(dev, "Inconsistent free_map!\n"); | |
288 | ||
289 | /* Copy the skb to the long term mapped DMA buffer */ | |
290 | offset = index * pool->buff_size; | |
291 | dst = pool->long_term_buff.buff + offset; | |
292 | memset(dst, 0, pool->buff_size); | |
293 | dma_addr = pool->long_term_buff.addr + offset; | |
294 | pool->rx_buff[index].data = dst; | |
295 | ||
296 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; | |
297 | pool->rx_buff[index].dma = dma_addr; | |
298 | pool->rx_buff[index].skb = skb; | |
299 | pool->rx_buff[index].pool_index = pool->index; | |
300 | pool->rx_buff[index].size = pool->buff_size; | |
301 | ||
302 | memset(&sub_crq, 0, sizeof(sub_crq)); | |
303 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; | |
304 | sub_crq.rx_add.correlator = | |
305 | cpu_to_be64((u64)&pool->rx_buff[index]); | |
306 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); | |
307 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; | |
308 | ||
309 | /* The length field of the sCRQ is defined to be 24 bits so the | |
310 | * buffer size needs to be left shifted by a byte before it is | |
311 | * converted to big endian to prevent the last byte from being | |
312 | * truncated. | |
313 | */ | |
314 | #ifdef __LITTLE_ENDIAN__ | |
315 | shift = 8; | |
316 | #endif | |
317 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); | |
318 | ||
319 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], | |
320 | &sub_crq); | |
321 | if (lpar_rc != H_SUCCESS) | |
322 | goto failure; | |
323 | ||
324 | buffers_added++; | |
325 | adapter->replenish_add_buff_success++; | |
326 | pool->next_free = (pool->next_free + 1) % pool->size; | |
327 | } | |
328 | atomic_add(buffers_added, &pool->available); | |
329 | return; | |
330 | ||
331 | failure: | |
2d14d379 TF |
332 | if (lpar_rc != H_PARAMETER && lpar_rc != H_CLOSED) |
333 | dev_err_ratelimited(dev, "rx: replenish packet buffer failed\n"); | |
032c5e82 TF |
334 | pool->free_map[pool->next_free] = index; |
335 | pool->rx_buff[index].skb = NULL; | |
032c5e82 TF |
336 | |
337 | dev_kfree_skb_any(skb); | |
338 | adapter->replenish_add_buff_failure++; | |
339 | atomic_add(buffers_added, &pool->available); | |
f185a49a | 340 | |
5a18e1e0 | 341 | if (lpar_rc == H_CLOSED || adapter->failover_pending) { |
f185a49a | 342 | /* Disable buffer pool replenishment and report carrier off if |
5a18e1e0 TF |
343 | * queue is closed or pending failover. |
344 | * Firmware guarantees that a signal will be sent to the | |
345 | * driver, triggering a reset. | |
f185a49a TF |
346 | */ |
347 | deactivate_rx_pools(adapter); | |
348 | netif_carrier_off(adapter->netdev); | |
349 | } | |
032c5e82 TF |
350 | } |
351 | ||
352 | static void replenish_pools(struct ibmvnic_adapter *adapter) | |
353 | { | |
354 | int i; | |
355 | ||
032c5e82 TF |
356 | adapter->replenish_task_cycles++; |
357 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
358 | i++) { | |
359 | if (adapter->rx_pool[i].active) | |
360 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); | |
361 | } | |
362 | } | |
363 | ||
3d52b594 JA |
364 | static void release_stats_buffers(struct ibmvnic_adapter *adapter) |
365 | { | |
366 | kfree(adapter->tx_stats_buffers); | |
367 | kfree(adapter->rx_stats_buffers); | |
b0992eca TF |
368 | adapter->tx_stats_buffers = NULL; |
369 | adapter->rx_stats_buffers = NULL; | |
3d52b594 JA |
370 | } |
371 | ||
372 | static int init_stats_buffers(struct ibmvnic_adapter *adapter) | |
373 | { | |
374 | adapter->tx_stats_buffers = | |
abcae546 | 375 | kcalloc(IBMVNIC_MAX_QUEUES, |
3d52b594 JA |
376 | sizeof(struct ibmvnic_tx_queue_stats), |
377 | GFP_KERNEL); | |
378 | if (!adapter->tx_stats_buffers) | |
379 | return -ENOMEM; | |
380 | ||
381 | adapter->rx_stats_buffers = | |
abcae546 | 382 | kcalloc(IBMVNIC_MAX_QUEUES, |
3d52b594 JA |
383 | sizeof(struct ibmvnic_rx_queue_stats), |
384 | GFP_KERNEL); | |
385 | if (!adapter->rx_stats_buffers) | |
386 | return -ENOMEM; | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
7bbc27a4 NF |
391 | static void release_stats_token(struct ibmvnic_adapter *adapter) |
392 | { | |
393 | struct device *dev = &adapter->vdev->dev; | |
394 | ||
395 | if (!adapter->stats_token) | |
396 | return; | |
397 | ||
398 | dma_unmap_single(dev, adapter->stats_token, | |
399 | sizeof(struct ibmvnic_statistics), | |
400 | DMA_FROM_DEVICE); | |
401 | adapter->stats_token = 0; | |
402 | } | |
403 | ||
404 | static int init_stats_token(struct ibmvnic_adapter *adapter) | |
405 | { | |
406 | struct device *dev = &adapter->vdev->dev; | |
407 | dma_addr_t stok; | |
408 | ||
409 | stok = dma_map_single(dev, &adapter->stats, | |
410 | sizeof(struct ibmvnic_statistics), | |
411 | DMA_FROM_DEVICE); | |
412 | if (dma_mapping_error(dev, stok)) { | |
413 | dev_err(dev, "Couldn't map stats buffer\n"); | |
414 | return -1; | |
415 | } | |
416 | ||
417 | adapter->stats_token = stok; | |
d1cf33d9 | 418 | netdev_dbg(adapter->netdev, "Stats token initialized (%llx)\n", stok); |
7bbc27a4 NF |
419 | return 0; |
420 | } | |
421 | ||
8c0543ad NF |
422 | static int reset_rx_pools(struct ibmvnic_adapter *adapter) |
423 | { | |
424 | struct ibmvnic_rx_pool *rx_pool; | |
425 | int rx_scrqs; | |
f3be0cbc | 426 | int i, j, rc; |
896d8695 JA |
427 | u64 *size_array; |
428 | ||
429 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
430 | be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size)); | |
8c0543ad NF |
431 | |
432 | rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
433 | for (i = 0; i < rx_scrqs; i++) { | |
434 | rx_pool = &adapter->rx_pool[i]; | |
435 | ||
d1cf33d9 NF |
436 | netdev_dbg(adapter->netdev, "Re-setting rx_pool[%d]\n", i); |
437 | ||
896d8695 JA |
438 | if (rx_pool->buff_size != be64_to_cpu(size_array[i])) { |
439 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
440 | rx_pool->buff_size = be64_to_cpu(size_array[i]); | |
441 | alloc_long_term_buff(adapter, &rx_pool->long_term_buff, | |
442 | rx_pool->size * | |
443 | rx_pool->buff_size); | |
444 | } else { | |
445 | rc = reset_long_term_buff(adapter, | |
446 | &rx_pool->long_term_buff); | |
447 | } | |
448 | ||
f3be0cbc TF |
449 | if (rc) |
450 | return rc; | |
8c0543ad NF |
451 | |
452 | for (j = 0; j < rx_pool->size; j++) | |
453 | rx_pool->free_map[j] = j; | |
454 | ||
455 | memset(rx_pool->rx_buff, 0, | |
456 | rx_pool->size * sizeof(struct ibmvnic_rx_buff)); | |
457 | ||
458 | atomic_set(&rx_pool->available, 0); | |
459 | rx_pool->next_alloc = 0; | |
460 | rx_pool->next_free = 0; | |
c3e53b9a | 461 | rx_pool->active = 1; |
8c0543ad NF |
462 | } |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
0ffe2cb7 | 467 | static void release_rx_pools(struct ibmvnic_adapter *adapter) |
032c5e82 | 468 | { |
0ffe2cb7 | 469 | struct ibmvnic_rx_pool *rx_pool; |
0ffe2cb7 | 470 | int i, j; |
032c5e82 | 471 | |
0ffe2cb7 | 472 | if (!adapter->rx_pool) |
032c5e82 TF |
473 | return; |
474 | ||
82e3be32 | 475 | for (i = 0; i < adapter->num_active_rx_pools; i++) { |
0ffe2cb7 NF |
476 | rx_pool = &adapter->rx_pool[i]; |
477 | ||
d1cf33d9 NF |
478 | netdev_dbg(adapter->netdev, "Releasing rx_pool[%d]\n", i); |
479 | ||
0ffe2cb7 NF |
480 | kfree(rx_pool->free_map); |
481 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
482 | ||
483 | if (!rx_pool->rx_buff) | |
e0ebe942 | 484 | continue; |
0ffe2cb7 NF |
485 | |
486 | for (j = 0; j < rx_pool->size; j++) { | |
487 | if (rx_pool->rx_buff[j].skb) { | |
b7cdec3d TF |
488 | dev_kfree_skb_any(rx_pool->rx_buff[j].skb); |
489 | rx_pool->rx_buff[j].skb = NULL; | |
0ffe2cb7 NF |
490 | } |
491 | } | |
492 | ||
493 | kfree(rx_pool->rx_buff); | |
494 | } | |
495 | ||
496 | kfree(adapter->rx_pool); | |
497 | adapter->rx_pool = NULL; | |
82e3be32 | 498 | adapter->num_active_rx_pools = 0; |
0ffe2cb7 NF |
499 | } |
500 | ||
501 | static int init_rx_pools(struct net_device *netdev) | |
502 | { | |
503 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
504 | struct device *dev = &adapter->vdev->dev; | |
505 | struct ibmvnic_rx_pool *rx_pool; | |
506 | int rxadd_subcrqs; | |
507 | u64 *size_array; | |
508 | int i, j; | |
509 | ||
510 | rxadd_subcrqs = | |
511 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
512 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
513 | be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size)); | |
514 | ||
515 | adapter->rx_pool = kcalloc(rxadd_subcrqs, | |
516 | sizeof(struct ibmvnic_rx_pool), | |
517 | GFP_KERNEL); | |
518 | if (!adapter->rx_pool) { | |
519 | dev_err(dev, "Failed to allocate rx pools\n"); | |
520 | return -1; | |
521 | } | |
522 | ||
82e3be32 NF |
523 | adapter->num_active_rx_pools = rxadd_subcrqs; |
524 | ||
0ffe2cb7 NF |
525 | for (i = 0; i < rxadd_subcrqs; i++) { |
526 | rx_pool = &adapter->rx_pool[i]; | |
527 | ||
528 | netdev_dbg(adapter->netdev, | |
d1cf33d9 | 529 | "Initializing rx_pool[%d], %lld buffs, %lld bytes each\n", |
0ffe2cb7 NF |
530 | i, adapter->req_rx_add_entries_per_subcrq, |
531 | be64_to_cpu(size_array[i])); | |
532 | ||
533 | rx_pool->size = adapter->req_rx_add_entries_per_subcrq; | |
534 | rx_pool->index = i; | |
535 | rx_pool->buff_size = be64_to_cpu(size_array[i]); | |
536 | rx_pool->active = 1; | |
537 | ||
538 | rx_pool->free_map = kcalloc(rx_pool->size, sizeof(int), | |
539 | GFP_KERNEL); | |
540 | if (!rx_pool->free_map) { | |
541 | release_rx_pools(adapter); | |
542 | return -1; | |
032c5e82 | 543 | } |
0ffe2cb7 NF |
544 | |
545 | rx_pool->rx_buff = kcalloc(rx_pool->size, | |
546 | sizeof(struct ibmvnic_rx_buff), | |
547 | GFP_KERNEL); | |
548 | if (!rx_pool->rx_buff) { | |
549 | dev_err(dev, "Couldn't alloc rx buffers\n"); | |
550 | release_rx_pools(adapter); | |
551 | return -1; | |
552 | } | |
553 | ||
554 | if (alloc_long_term_buff(adapter, &rx_pool->long_term_buff, | |
555 | rx_pool->size * rx_pool->buff_size)) { | |
556 | release_rx_pools(adapter); | |
557 | return -1; | |
558 | } | |
559 | ||
560 | for (j = 0; j < rx_pool->size; ++j) | |
561 | rx_pool->free_map[j] = j; | |
562 | ||
563 | atomic_set(&rx_pool->available, 0); | |
564 | rx_pool->next_alloc = 0; | |
565 | rx_pool->next_free = 0; | |
032c5e82 | 566 | } |
0ffe2cb7 NF |
567 | |
568 | return 0; | |
032c5e82 TF |
569 | } |
570 | ||
e26dc25b TF |
571 | static int reset_one_tx_pool(struct ibmvnic_adapter *adapter, |
572 | struct ibmvnic_tx_pool *tx_pool) | |
573 | { | |
574 | int rc, i; | |
575 | ||
576 | rc = reset_long_term_buff(adapter, &tx_pool->long_term_buff); | |
577 | if (rc) | |
578 | return rc; | |
579 | ||
580 | memset(tx_pool->tx_buff, 0, | |
581 | tx_pool->num_buffers * | |
582 | sizeof(struct ibmvnic_tx_buff)); | |
583 | ||
584 | for (i = 0; i < tx_pool->num_buffers; i++) | |
585 | tx_pool->free_map[i] = i; | |
586 | ||
587 | tx_pool->consumer_index = 0; | |
588 | tx_pool->producer_index = 0; | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
8c0543ad NF |
593 | static int reset_tx_pools(struct ibmvnic_adapter *adapter) |
594 | { | |
8c0543ad | 595 | int tx_scrqs; |
e26dc25b | 596 | int i, rc; |
8c0543ad NF |
597 | |
598 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
599 | for (i = 0; i < tx_scrqs; i++) { | |
e26dc25b | 600 | rc = reset_one_tx_pool(adapter, &adapter->tso_pool[i]); |
f3be0cbc TF |
601 | if (rc) |
602 | return rc; | |
e26dc25b | 603 | rc = reset_one_tx_pool(adapter, &adapter->tx_pool[i]); |
fdb06105 TF |
604 | if (rc) |
605 | return rc; | |
8c0543ad NF |
606 | } |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
4e6759be DANR |
611 | static void release_vpd_data(struct ibmvnic_adapter *adapter) |
612 | { | |
613 | if (!adapter->vpd) | |
614 | return; | |
615 | ||
616 | kfree(adapter->vpd->buff); | |
617 | kfree(adapter->vpd); | |
b0992eca TF |
618 | |
619 | adapter->vpd = NULL; | |
4e6759be DANR |
620 | } |
621 | ||
fb79421c TF |
622 | static void release_one_tx_pool(struct ibmvnic_adapter *adapter, |
623 | struct ibmvnic_tx_pool *tx_pool) | |
624 | { | |
625 | kfree(tx_pool->tx_buff); | |
626 | kfree(tx_pool->free_map); | |
627 | free_long_term_buff(adapter, &tx_pool->long_term_buff); | |
628 | } | |
629 | ||
c657e32c NF |
630 | static void release_tx_pools(struct ibmvnic_adapter *adapter) |
631 | { | |
896d8695 | 632 | int i; |
c657e32c NF |
633 | |
634 | if (!adapter->tx_pool) | |
635 | return; | |
636 | ||
82e3be32 | 637 | for (i = 0; i < adapter->num_active_tx_pools; i++) { |
fb79421c TF |
638 | release_one_tx_pool(adapter, &adapter->tx_pool[i]); |
639 | release_one_tx_pool(adapter, &adapter->tso_pool[i]); | |
c657e32c NF |
640 | } |
641 | ||
642 | kfree(adapter->tx_pool); | |
643 | adapter->tx_pool = NULL; | |
fb79421c TF |
644 | kfree(adapter->tso_pool); |
645 | adapter->tso_pool = NULL; | |
82e3be32 | 646 | adapter->num_active_tx_pools = 0; |
c657e32c NF |
647 | } |
648 | ||
3205306c TF |
649 | static int init_one_tx_pool(struct net_device *netdev, |
650 | struct ibmvnic_tx_pool *tx_pool, | |
651 | int num_entries, int buf_size) | |
652 | { | |
653 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
654 | int i; | |
655 | ||
656 | tx_pool->tx_buff = kcalloc(num_entries, | |
657 | sizeof(struct ibmvnic_tx_buff), | |
658 | GFP_KERNEL); | |
659 | if (!tx_pool->tx_buff) | |
660 | return -1; | |
661 | ||
662 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, | |
663 | num_entries * buf_size)) | |
664 | return -1; | |
665 | ||
666 | tx_pool->free_map = kcalloc(num_entries, sizeof(int), GFP_KERNEL); | |
667 | if (!tx_pool->free_map) | |
668 | return -1; | |
669 | ||
670 | for (i = 0; i < num_entries; i++) | |
671 | tx_pool->free_map[i] = i; | |
672 | ||
673 | tx_pool->consumer_index = 0; | |
674 | tx_pool->producer_index = 0; | |
675 | tx_pool->num_buffers = num_entries; | |
676 | tx_pool->buf_size = buf_size; | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
c657e32c NF |
681 | static int init_tx_pools(struct net_device *netdev) |
682 | { | |
683 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
c657e32c | 684 | int tx_subcrqs; |
3205306c | 685 | int i, rc; |
c657e32c NF |
686 | |
687 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
688 | adapter->tx_pool = kcalloc(tx_subcrqs, | |
689 | sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
690 | if (!adapter->tx_pool) | |
691 | return -1; | |
692 | ||
3205306c TF |
693 | adapter->tso_pool = kcalloc(tx_subcrqs, |
694 | sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
695 | if (!adapter->tso_pool) | |
696 | return -1; | |
697 | ||
82e3be32 NF |
698 | adapter->num_active_tx_pools = tx_subcrqs; |
699 | ||
c657e32c | 700 | for (i = 0; i < tx_subcrqs; i++) { |
3205306c TF |
701 | rc = init_one_tx_pool(netdev, &adapter->tx_pool[i], |
702 | adapter->req_tx_entries_per_subcrq, | |
703 | adapter->req_mtu + VLAN_HLEN); | |
704 | if (rc) { | |
c657e32c | 705 | release_tx_pools(adapter); |
3205306c | 706 | return rc; |
fdb06105 TF |
707 | } |
708 | ||
3205306c TF |
709 | init_one_tx_pool(netdev, &adapter->tso_pool[i], |
710 | IBMVNIC_TSO_BUFS, | |
711 | IBMVNIC_TSO_BUF_SZ); | |
712 | if (rc) { | |
c657e32c | 713 | release_tx_pools(adapter); |
3205306c | 714 | return rc; |
c657e32c | 715 | } |
c657e32c NF |
716 | } |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
d944c3d6 JA |
721 | static void ibmvnic_napi_enable(struct ibmvnic_adapter *adapter) |
722 | { | |
723 | int i; | |
724 | ||
725 | if (adapter->napi_enabled) | |
726 | return; | |
727 | ||
728 | for (i = 0; i < adapter->req_rx_queues; i++) | |
729 | napi_enable(&adapter->napi[i]); | |
730 | ||
731 | adapter->napi_enabled = true; | |
732 | } | |
733 | ||
734 | static void ibmvnic_napi_disable(struct ibmvnic_adapter *adapter) | |
735 | { | |
736 | int i; | |
737 | ||
738 | if (!adapter->napi_enabled) | |
739 | return; | |
740 | ||
d1cf33d9 NF |
741 | for (i = 0; i < adapter->req_rx_queues; i++) { |
742 | netdev_dbg(adapter->netdev, "Disabling napi[%d]\n", i); | |
d944c3d6 | 743 | napi_disable(&adapter->napi[i]); |
d1cf33d9 | 744 | } |
d944c3d6 JA |
745 | |
746 | adapter->napi_enabled = false; | |
747 | } | |
748 | ||
86f669b2 NF |
749 | static int init_napi(struct ibmvnic_adapter *adapter) |
750 | { | |
751 | int i; | |
752 | ||
753 | adapter->napi = kcalloc(adapter->req_rx_queues, | |
754 | sizeof(struct napi_struct), GFP_KERNEL); | |
755 | if (!adapter->napi) | |
756 | return -ENOMEM; | |
757 | ||
758 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
759 | netdev_dbg(adapter->netdev, "Adding napi[%d]\n", i); | |
760 | netif_napi_add(adapter->netdev, &adapter->napi[i], | |
761 | ibmvnic_poll, NAPI_POLL_WEIGHT); | |
762 | } | |
763 | ||
82e3be32 | 764 | adapter->num_active_rx_napi = adapter->req_rx_queues; |
86f669b2 NF |
765 | return 0; |
766 | } | |
767 | ||
768 | static void release_napi(struct ibmvnic_adapter *adapter) | |
769 | { | |
770 | int i; | |
771 | ||
772 | if (!adapter->napi) | |
773 | return; | |
774 | ||
82e3be32 | 775 | for (i = 0; i < adapter->num_active_rx_napi; i++) { |
390de194 WY |
776 | netdev_dbg(adapter->netdev, "Releasing napi[%d]\n", i); |
777 | netif_napi_del(&adapter->napi[i]); | |
86f669b2 NF |
778 | } |
779 | ||
780 | kfree(adapter->napi); | |
781 | adapter->napi = NULL; | |
82e3be32 | 782 | adapter->num_active_rx_napi = 0; |
c3f22415 | 783 | adapter->napi_enabled = false; |
86f669b2 NF |
784 | } |
785 | ||
a57a5d25 | 786 | static int ibmvnic_login(struct net_device *netdev) |
032c5e82 TF |
787 | { |
788 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
bd0b6723 | 789 | unsigned long timeout = msecs_to_jiffies(30000); |
64d92aa2 | 790 | int retry_count = 0; |
eb110410 | 791 | bool retry; |
4d96f12a | 792 | int rc; |
032c5e82 | 793 | |
bd0b6723 | 794 | do { |
eb110410 | 795 | retry = false; |
64d92aa2 NF |
796 | if (retry_count > IBMVNIC_MAX_QUEUES) { |
797 | netdev_warn(netdev, "Login attempts exceeded\n"); | |
798 | return -1; | |
799 | } | |
800 | ||
801 | adapter->init_done_rc = 0; | |
802 | reinit_completion(&adapter->init_done); | |
803 | rc = send_login(adapter); | |
804 | if (rc) { | |
805 | netdev_warn(netdev, "Unable to login\n"); | |
806 | return rc; | |
807 | } | |
808 | ||
809 | if (!wait_for_completion_timeout(&adapter->init_done, | |
810 | timeout)) { | |
811 | netdev_warn(netdev, "Login timed out\n"); | |
812 | return -1; | |
813 | } | |
814 | ||
815 | if (adapter->init_done_rc == PARTIALSUCCESS) { | |
816 | retry_count++; | |
d7c0ef36 | 817 | release_sub_crqs(adapter, 1); |
bd0b6723 | 818 | |
eb110410 TF |
819 | retry = true; |
820 | netdev_dbg(netdev, | |
821 | "Received partial success, retrying...\n"); | |
64d92aa2 | 822 | adapter->init_done_rc = 0; |
bd0b6723 JA |
823 | reinit_completion(&adapter->init_done); |
824 | send_cap_queries(adapter); | |
825 | if (!wait_for_completion_timeout(&adapter->init_done, | |
826 | timeout)) { | |
64d92aa2 NF |
827 | netdev_warn(netdev, |
828 | "Capabilities query timed out\n"); | |
bd0b6723 JA |
829 | return -1; |
830 | } | |
64d92aa2 | 831 | |
4d96f12a TF |
832 | rc = init_sub_crqs(adapter); |
833 | if (rc) { | |
64d92aa2 NF |
834 | netdev_warn(netdev, |
835 | "SCRQ initialization failed\n"); | |
4d96f12a TF |
836 | return -1; |
837 | } | |
64d92aa2 | 838 | |
4d96f12a TF |
839 | rc = init_sub_crq_irqs(adapter); |
840 | if (rc) { | |
64d92aa2 NF |
841 | netdev_warn(netdev, |
842 | "SCRQ irq initialization failed\n"); | |
4d96f12a TF |
843 | return -1; |
844 | } | |
64d92aa2 NF |
845 | } else if (adapter->init_done_rc) { |
846 | netdev_warn(netdev, "Adapter login failed\n"); | |
bd0b6723 JA |
847 | return -1; |
848 | } | |
eb110410 | 849 | } while (retry); |
bd0b6723 | 850 | |
3d166130 TF |
851 | /* handle pending MAC address changes after successful login */ |
852 | if (adapter->mac_change_pending) { | |
853 | __ibmvnic_set_mac(netdev, &adapter->desired.mac); | |
854 | adapter->mac_change_pending = false; | |
855 | } | |
856 | ||
a57a5d25 JA |
857 | return 0; |
858 | } | |
859 | ||
34f0f4e3 TF |
860 | static void release_login_buffer(struct ibmvnic_adapter *adapter) |
861 | { | |
862 | kfree(adapter->login_buf); | |
863 | adapter->login_buf = NULL; | |
864 | } | |
865 | ||
866 | static void release_login_rsp_buffer(struct ibmvnic_adapter *adapter) | |
867 | { | |
868 | kfree(adapter->login_rsp_buf); | |
869 | adapter->login_rsp_buf = NULL; | |
870 | } | |
871 | ||
1b8955ee NF |
872 | static void release_resources(struct ibmvnic_adapter *adapter) |
873 | { | |
4e6759be DANR |
874 | release_vpd_data(adapter); |
875 | ||
1b8955ee NF |
876 | release_tx_pools(adapter); |
877 | release_rx_pools(adapter); | |
878 | ||
86f669b2 | 879 | release_napi(adapter); |
34f0f4e3 | 880 | release_login_rsp_buffer(adapter); |
1b8955ee NF |
881 | } |
882 | ||
53da09e9 NF |
883 | static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state) |
884 | { | |
885 | struct net_device *netdev = adapter->netdev; | |
886 | unsigned long timeout = msecs_to_jiffies(30000); | |
887 | union ibmvnic_crq crq; | |
888 | bool resend; | |
889 | int rc; | |
890 | ||
d1cf33d9 NF |
891 | netdev_dbg(netdev, "setting link state %d\n", link_state); |
892 | ||
53da09e9 NF |
893 | memset(&crq, 0, sizeof(crq)); |
894 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
895 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
896 | crq.logical_link_state.link_state = link_state; | |
897 | ||
898 | do { | |
899 | resend = false; | |
900 | ||
901 | reinit_completion(&adapter->init_done); | |
902 | rc = ibmvnic_send_crq(adapter, &crq); | |
903 | if (rc) { | |
904 | netdev_err(netdev, "Failed to set link state\n"); | |
905 | return rc; | |
906 | } | |
907 | ||
908 | if (!wait_for_completion_timeout(&adapter->init_done, | |
909 | timeout)) { | |
910 | netdev_err(netdev, "timeout setting link state\n"); | |
911 | return -1; | |
912 | } | |
913 | ||
914 | if (adapter->init_done_rc == 1) { | |
915 | /* Partuial success, delay and re-send */ | |
916 | mdelay(1000); | |
917 | resend = true; | |
ab5ec33b TF |
918 | } else if (adapter->init_done_rc) { |
919 | netdev_warn(netdev, "Unable to set link state, rc=%d\n", | |
920 | adapter->init_done_rc); | |
921 | return adapter->init_done_rc; | |
53da09e9 NF |
922 | } |
923 | } while (resend); | |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
7f3c6e6b TF |
928 | static int set_real_num_queues(struct net_device *netdev) |
929 | { | |
930 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
931 | int rc; | |
932 | ||
d1cf33d9 NF |
933 | netdev_dbg(netdev, "Setting real tx/rx queues (%llx/%llx)\n", |
934 | adapter->req_tx_queues, adapter->req_rx_queues); | |
935 | ||
7f3c6e6b TF |
936 | rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues); |
937 | if (rc) { | |
938 | netdev_err(netdev, "failed to set the number of tx queues\n"); | |
939 | return rc; | |
940 | } | |
941 | ||
942 | rc = netif_set_real_num_rx_queues(netdev, adapter->req_rx_queues); | |
943 | if (rc) | |
944 | netdev_err(netdev, "failed to set the number of rx queues\n"); | |
945 | ||
946 | return rc; | |
947 | } | |
948 | ||
4e6759be DANR |
949 | static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter) |
950 | { | |
951 | struct device *dev = &adapter->vdev->dev; | |
952 | union ibmvnic_crq crq; | |
4e6759be | 953 | int len = 0; |
9c4eaabd | 954 | int rc; |
4e6759be DANR |
955 | |
956 | if (adapter->vpd->buff) | |
957 | len = adapter->vpd->len; | |
958 | ||
69d08dcb | 959 | init_completion(&adapter->fw_done); |
4e6759be DANR |
960 | crq.get_vpd_size.first = IBMVNIC_CRQ_CMD; |
961 | crq.get_vpd_size.cmd = GET_VPD_SIZE; | |
9c4eaabd TF |
962 | rc = ibmvnic_send_crq(adapter, &crq); |
963 | if (rc) | |
964 | return rc; | |
4e6759be DANR |
965 | wait_for_completion(&adapter->fw_done); |
966 | ||
967 | if (!adapter->vpd->len) | |
968 | return -ENODATA; | |
969 | ||
970 | if (!adapter->vpd->buff) | |
971 | adapter->vpd->buff = kzalloc(adapter->vpd->len, GFP_KERNEL); | |
972 | else if (adapter->vpd->len != len) | |
973 | adapter->vpd->buff = | |
974 | krealloc(adapter->vpd->buff, | |
975 | adapter->vpd->len, GFP_KERNEL); | |
976 | ||
977 | if (!adapter->vpd->buff) { | |
978 | dev_err(dev, "Could allocate VPD buffer\n"); | |
979 | return -ENOMEM; | |
980 | } | |
981 | ||
982 | adapter->vpd->dma_addr = | |
983 | dma_map_single(dev, adapter->vpd->buff, adapter->vpd->len, | |
984 | DMA_FROM_DEVICE); | |
f743106e | 985 | if (dma_mapping_error(dev, adapter->vpd->dma_addr)) { |
4e6759be DANR |
986 | dev_err(dev, "Could not map VPD buffer\n"); |
987 | kfree(adapter->vpd->buff); | |
b0992eca | 988 | adapter->vpd->buff = NULL; |
4e6759be DANR |
989 | return -ENOMEM; |
990 | } | |
991 | ||
992 | reinit_completion(&adapter->fw_done); | |
993 | crq.get_vpd.first = IBMVNIC_CRQ_CMD; | |
994 | crq.get_vpd.cmd = GET_VPD; | |
995 | crq.get_vpd.ioba = cpu_to_be32(adapter->vpd->dma_addr); | |
996 | crq.get_vpd.len = cpu_to_be32((u32)adapter->vpd->len); | |
9c4eaabd TF |
997 | rc = ibmvnic_send_crq(adapter, &crq); |
998 | if (rc) { | |
999 | kfree(adapter->vpd->buff); | |
1000 | adapter->vpd->buff = NULL; | |
1001 | return rc; | |
1002 | } | |
4e6759be DANR |
1003 | wait_for_completion(&adapter->fw_done); |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
bfc32f29 | 1008 | static int init_resources(struct ibmvnic_adapter *adapter) |
a57a5d25 | 1009 | { |
bfc32f29 | 1010 | struct net_device *netdev = adapter->netdev; |
86f669b2 | 1011 | int rc; |
a57a5d25 | 1012 | |
7f3c6e6b TF |
1013 | rc = set_real_num_queues(netdev); |
1014 | if (rc) | |
1015 | return rc; | |
bd0b6723 | 1016 | |
4e6759be DANR |
1017 | adapter->vpd = kzalloc(sizeof(*adapter->vpd), GFP_KERNEL); |
1018 | if (!adapter->vpd) | |
1019 | return -ENOMEM; | |
1020 | ||
69d08dcb JA |
1021 | /* Vital Product Data (VPD) */ |
1022 | rc = ibmvnic_get_vpd(adapter); | |
1023 | if (rc) { | |
1024 | netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n"); | |
1025 | return rc; | |
1026 | } | |
1027 | ||
032c5e82 | 1028 | adapter->map_id = 1; |
bfc32f29 | 1029 | |
86f669b2 NF |
1030 | rc = init_napi(adapter); |
1031 | if (rc) | |
1032 | return rc; | |
032c5e82 | 1033 | |
032c5e82 | 1034 | send_map_query(adapter); |
0ffe2cb7 NF |
1035 | |
1036 | rc = init_rx_pools(netdev); | |
1037 | if (rc) | |
bfc32f29 | 1038 | return rc; |
032c5e82 | 1039 | |
c657e32c | 1040 | rc = init_tx_pools(netdev); |
bfc32f29 NF |
1041 | return rc; |
1042 | } | |
1043 | ||
ed651a10 | 1044 | static int __ibmvnic_open(struct net_device *netdev) |
bfc32f29 NF |
1045 | { |
1046 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
ed651a10 | 1047 | enum vnic_state prev_state = adapter->state; |
bfc32f29 NF |
1048 | int i, rc; |
1049 | ||
90c8014c | 1050 | adapter->state = VNIC_OPENING; |
032c5e82 | 1051 | replenish_pools(adapter); |
d944c3d6 | 1052 | ibmvnic_napi_enable(adapter); |
bfc32f29 | 1053 | |
032c5e82 TF |
1054 | /* We're ready to receive frames, enable the sub-crq interrupts and |
1055 | * set the logical link state to up | |
1056 | */ | |
ed651a10 | 1057 | for (i = 0; i < adapter->req_rx_queues; i++) { |
d1cf33d9 | 1058 | netdev_dbg(netdev, "Enabling rx_scrq[%d] irq\n", i); |
ed651a10 NF |
1059 | if (prev_state == VNIC_CLOSED) |
1060 | enable_irq(adapter->rx_scrq[i]->irq); | |
f23e0643 | 1061 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); |
ed651a10 | 1062 | } |
032c5e82 | 1063 | |
ed651a10 | 1064 | for (i = 0; i < adapter->req_tx_queues; i++) { |
d1cf33d9 | 1065 | netdev_dbg(netdev, "Enabling tx_scrq[%d] irq\n", i); |
ed651a10 NF |
1066 | if (prev_state == VNIC_CLOSED) |
1067 | enable_irq(adapter->tx_scrq[i]->irq); | |
f23e0643 | 1068 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); |
ed651a10 | 1069 | } |
032c5e82 | 1070 | |
53da09e9 | 1071 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_UP); |
bfc32f29 NF |
1072 | if (rc) { |
1073 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1074 | napi_disable(&adapter->napi[i]); | |
1075 | release_resources(adapter); | |
ed651a10 | 1076 | return rc; |
bfc32f29 | 1077 | } |
032c5e82 | 1078 | |
ed651a10 NF |
1079 | netif_tx_start_all_queues(netdev); |
1080 | ||
1081 | if (prev_state == VNIC_CLOSED) { | |
1082 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1083 | napi_schedule(&adapter->napi[i]); | |
1084 | } | |
1085 | ||
1086 | adapter->state = VNIC_OPEN; | |
1087 | return rc; | |
1088 | } | |
1089 | ||
1090 | static int ibmvnic_open(struct net_device *netdev) | |
1091 | { | |
1092 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
69d08dcb | 1093 | int rc; |
ed651a10 | 1094 | |
5a18e1e0 TF |
1095 | /* If device failover is pending, just set device state and return. |
1096 | * Device operation will be handled by reset routine. | |
1097 | */ | |
1098 | if (adapter->failover_pending) { | |
1099 | adapter->state = VNIC_OPEN; | |
1100 | return 0; | |
1101 | } | |
1102 | ||
ed651a10 NF |
1103 | if (adapter->state != VNIC_CLOSED) { |
1104 | rc = ibmvnic_login(netdev); | |
a5681e20 | 1105 | if (rc) |
ed651a10 | 1106 | return rc; |
ed651a10 NF |
1107 | |
1108 | rc = init_resources(adapter); | |
1109 | if (rc) { | |
1110 | netdev_err(netdev, "failed to initialize resources\n"); | |
1111 | release_resources(adapter); | |
ed651a10 NF |
1112 | return rc; |
1113 | } | |
1114 | } | |
1115 | ||
1116 | rc = __ibmvnic_open(netdev); | |
e876a8a7 | 1117 | netif_carrier_on(netdev); |
4e6759be | 1118 | |
bfc32f29 | 1119 | return rc; |
032c5e82 TF |
1120 | } |
1121 | ||
d0869c00 TF |
1122 | static void clean_rx_pools(struct ibmvnic_adapter *adapter) |
1123 | { | |
1124 | struct ibmvnic_rx_pool *rx_pool; | |
637f81d1 | 1125 | struct ibmvnic_rx_buff *rx_buff; |
d0869c00 TF |
1126 | u64 rx_entries; |
1127 | int rx_scrqs; | |
1128 | int i, j; | |
1129 | ||
1130 | if (!adapter->rx_pool) | |
1131 | return; | |
1132 | ||
660e309d | 1133 | rx_scrqs = adapter->num_active_rx_pools; |
d0869c00 TF |
1134 | rx_entries = adapter->req_rx_add_entries_per_subcrq; |
1135 | ||
1136 | /* Free any remaining skbs in the rx buffer pools */ | |
1137 | for (i = 0; i < rx_scrqs; i++) { | |
1138 | rx_pool = &adapter->rx_pool[i]; | |
637f81d1 | 1139 | if (!rx_pool || !rx_pool->rx_buff) |
d0869c00 TF |
1140 | continue; |
1141 | ||
1142 | netdev_dbg(adapter->netdev, "Cleaning rx_pool[%d]\n", i); | |
1143 | for (j = 0; j < rx_entries; j++) { | |
637f81d1 TF |
1144 | rx_buff = &rx_pool->rx_buff[j]; |
1145 | if (rx_buff && rx_buff->skb) { | |
1146 | dev_kfree_skb_any(rx_buff->skb); | |
1147 | rx_buff->skb = NULL; | |
d0869c00 TF |
1148 | } |
1149 | } | |
1150 | } | |
1151 | } | |
1152 | ||
e9e1e978 TF |
1153 | static void clean_one_tx_pool(struct ibmvnic_adapter *adapter, |
1154 | struct ibmvnic_tx_pool *tx_pool) | |
b41b83e9 | 1155 | { |
637f81d1 | 1156 | struct ibmvnic_tx_buff *tx_buff; |
b41b83e9 | 1157 | u64 tx_entries; |
e9e1e978 TF |
1158 | int i; |
1159 | ||
050e85c9 | 1160 | if (!tx_pool || !tx_pool->tx_buff) |
e9e1e978 TF |
1161 | return; |
1162 | ||
1163 | tx_entries = tx_pool->num_buffers; | |
1164 | ||
1165 | for (i = 0; i < tx_entries; i++) { | |
1166 | tx_buff = &tx_pool->tx_buff[i]; | |
1167 | if (tx_buff && tx_buff->skb) { | |
1168 | dev_kfree_skb_any(tx_buff->skb); | |
1169 | tx_buff->skb = NULL; | |
1170 | } | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | static void clean_tx_pools(struct ibmvnic_adapter *adapter) | |
1175 | { | |
b41b83e9 | 1176 | int tx_scrqs; |
e9e1e978 | 1177 | int i; |
b41b83e9 | 1178 | |
e9e1e978 | 1179 | if (!adapter->tx_pool || !adapter->tso_pool) |
b41b83e9 NF |
1180 | return; |
1181 | ||
660e309d | 1182 | tx_scrqs = adapter->num_active_tx_pools; |
b41b83e9 NF |
1183 | |
1184 | /* Free any remaining skbs in the tx buffer pools */ | |
1185 | for (i = 0; i < tx_scrqs; i++) { | |
d1cf33d9 | 1186 | netdev_dbg(adapter->netdev, "Cleaning tx_pool[%d]\n", i); |
e9e1e978 TF |
1187 | clean_one_tx_pool(adapter, &adapter->tx_pool[i]); |
1188 | clean_one_tx_pool(adapter, &adapter->tso_pool[i]); | |
b41b83e9 NF |
1189 | } |
1190 | } | |
1191 | ||
6095e590 | 1192 | static void ibmvnic_disable_irqs(struct ibmvnic_adapter *adapter) |
ea5509f5 | 1193 | { |
6095e590 | 1194 | struct net_device *netdev = adapter->netdev; |
ea5509f5 JA |
1195 | int i; |
1196 | ||
46293b94 NF |
1197 | if (adapter->tx_scrq) { |
1198 | for (i = 0; i < adapter->req_tx_queues; i++) | |
d1cf33d9 | 1199 | if (adapter->tx_scrq[i]->irq) { |
f873866a | 1200 | netdev_dbg(netdev, |
d1cf33d9 | 1201 | "Disabling tx_scrq[%d] irq\n", i); |
f23e0643 | 1202 | disable_scrq_irq(adapter, adapter->tx_scrq[i]); |
46293b94 | 1203 | disable_irq(adapter->tx_scrq[i]->irq); |
d1cf33d9 | 1204 | } |
46293b94 NF |
1205 | } |
1206 | ||
46293b94 NF |
1207 | if (adapter->rx_scrq) { |
1208 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
d1cf33d9 | 1209 | if (adapter->rx_scrq[i]->irq) { |
f873866a | 1210 | netdev_dbg(netdev, |
d1cf33d9 | 1211 | "Disabling rx_scrq[%d] irq\n", i); |
f23e0643 | 1212 | disable_scrq_irq(adapter, adapter->rx_scrq[i]); |
46293b94 | 1213 | disable_irq(adapter->rx_scrq[i]->irq); |
d1cf33d9 | 1214 | } |
46293b94 NF |
1215 | } |
1216 | } | |
6095e590 JA |
1217 | } |
1218 | ||
1219 | static void ibmvnic_cleanup(struct net_device *netdev) | |
1220 | { | |
1221 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1222 | ||
1223 | /* ensure that transmissions are stopped if called by do_reset */ | |
1224 | if (adapter->resetting) | |
1225 | netif_tx_disable(netdev); | |
1226 | else | |
1227 | netif_tx_stop_all_queues(netdev); | |
1228 | ||
1229 | ibmvnic_napi_disable(adapter); | |
1230 | ibmvnic_disable_irqs(adapter); | |
1231 | ||
d0869c00 | 1232 | clean_rx_pools(adapter); |
10f76215 | 1233 | clean_tx_pools(adapter); |
01d9bd79 TF |
1234 | } |
1235 | ||
1236 | static int __ibmvnic_close(struct net_device *netdev) | |
1237 | { | |
1238 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1239 | int rc = 0; | |
1240 | ||
1241 | adapter->state = VNIC_CLOSING; | |
1242 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN); | |
1243 | if (rc) | |
1244 | return rc; | |
90c8014c | 1245 | adapter->state = VNIC_CLOSED; |
01d9bd79 | 1246 | return 0; |
032c5e82 TF |
1247 | } |
1248 | ||
ed651a10 NF |
1249 | static int ibmvnic_close(struct net_device *netdev) |
1250 | { | |
1251 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1252 | int rc; | |
1253 | ||
5a18e1e0 TF |
1254 | /* If device failover is pending, just set device state and return. |
1255 | * Device operation will be handled by reset routine. | |
1256 | */ | |
1257 | if (adapter->failover_pending) { | |
1258 | adapter->state = VNIC_CLOSED; | |
1259 | return 0; | |
1260 | } | |
1261 | ||
ed651a10 | 1262 | rc = __ibmvnic_close(netdev); |
30f79625 | 1263 | ibmvnic_cleanup(netdev); |
ed651a10 NF |
1264 | |
1265 | return rc; | |
1266 | } | |
1267 | ||
ad7775dc TF |
1268 | /** |
1269 | * build_hdr_data - creates L2/L3/L4 header data buffer | |
1270 | * @hdr_field - bitfield determining needed headers | |
1271 | * @skb - socket buffer | |
1272 | * @hdr_len - array of header lengths | |
1273 | * @tot_len - total length of data | |
1274 | * | |
1275 | * Reads hdr_field to determine which headers are needed by firmware. | |
1276 | * Builds a buffer containing these headers. Saves individual header | |
1277 | * lengths and total buffer length to be used to build descriptors. | |
1278 | */ | |
1279 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, | |
1280 | int *hdr_len, u8 *hdr_data) | |
1281 | { | |
1282 | int len = 0; | |
1283 | u8 *hdr; | |
1284 | ||
da75e3b6 TF |
1285 | if (skb_vlan_tagged(skb) && !skb_vlan_tag_present(skb)) |
1286 | hdr_len[0] = sizeof(struct vlan_ethhdr); | |
1287 | else | |
1288 | hdr_len[0] = sizeof(struct ethhdr); | |
ad7775dc TF |
1289 | |
1290 | if (skb->protocol == htons(ETH_P_IP)) { | |
1291 | hdr_len[1] = ip_hdr(skb)->ihl * 4; | |
1292 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
1293 | hdr_len[2] = tcp_hdrlen(skb); | |
1294 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
1295 | hdr_len[2] = sizeof(struct udphdr); | |
1296 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
1297 | hdr_len[1] = sizeof(struct ipv6hdr); | |
1298 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
1299 | hdr_len[2] = tcp_hdrlen(skb); | |
1300 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
1301 | hdr_len[2] = sizeof(struct udphdr); | |
4eb50ceb TF |
1302 | } else if (skb->protocol == htons(ETH_P_ARP)) { |
1303 | hdr_len[1] = arp_hdr_len(skb->dev); | |
1304 | hdr_len[2] = 0; | |
ad7775dc TF |
1305 | } |
1306 | ||
1307 | memset(hdr_data, 0, 120); | |
1308 | if ((hdr_field >> 6) & 1) { | |
1309 | hdr = skb_mac_header(skb); | |
1310 | memcpy(hdr_data, hdr, hdr_len[0]); | |
1311 | len += hdr_len[0]; | |
1312 | } | |
1313 | ||
1314 | if ((hdr_field >> 5) & 1) { | |
1315 | hdr = skb_network_header(skb); | |
1316 | memcpy(hdr_data + len, hdr, hdr_len[1]); | |
1317 | len += hdr_len[1]; | |
1318 | } | |
1319 | ||
1320 | if ((hdr_field >> 4) & 1) { | |
1321 | hdr = skb_transport_header(skb); | |
1322 | memcpy(hdr_data + len, hdr, hdr_len[2]); | |
1323 | len += hdr_len[2]; | |
1324 | } | |
1325 | return len; | |
1326 | } | |
1327 | ||
1328 | /** | |
1329 | * create_hdr_descs - create header and header extension descriptors | |
1330 | * @hdr_field - bitfield determining needed headers | |
1331 | * @data - buffer containing header data | |
1332 | * @len - length of data buffer | |
1333 | * @hdr_len - array of individual header lengths | |
1334 | * @scrq_arr - descriptor array | |
1335 | * | |
1336 | * Creates header and, if needed, header extension descriptors and | |
1337 | * places them in a descriptor array, scrq_arr | |
1338 | */ | |
1339 | ||
2de09681 TF |
1340 | static int create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, |
1341 | union sub_crq *scrq_arr) | |
ad7775dc TF |
1342 | { |
1343 | union sub_crq hdr_desc; | |
1344 | int tmp_len = len; | |
2de09681 | 1345 | int num_descs = 0; |
ad7775dc TF |
1346 | u8 *data, *cur; |
1347 | int tmp; | |
1348 | ||
1349 | while (tmp_len > 0) { | |
1350 | cur = hdr_data + len - tmp_len; | |
1351 | ||
1352 | memset(&hdr_desc, 0, sizeof(hdr_desc)); | |
1353 | if (cur != hdr_data) { | |
1354 | data = hdr_desc.hdr_ext.data; | |
1355 | tmp = tmp_len > 29 ? 29 : tmp_len; | |
1356 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; | |
1357 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; | |
1358 | hdr_desc.hdr_ext.len = tmp; | |
1359 | } else { | |
1360 | data = hdr_desc.hdr.data; | |
1361 | tmp = tmp_len > 24 ? 24 : tmp_len; | |
1362 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; | |
1363 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; | |
1364 | hdr_desc.hdr.len = tmp; | |
1365 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; | |
1366 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); | |
1367 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; | |
1368 | hdr_desc.hdr.flag = hdr_field << 1; | |
1369 | } | |
1370 | memcpy(data, cur, tmp); | |
1371 | tmp_len -= tmp; | |
1372 | *scrq_arr = hdr_desc; | |
1373 | scrq_arr++; | |
2de09681 | 1374 | num_descs++; |
ad7775dc | 1375 | } |
2de09681 TF |
1376 | |
1377 | return num_descs; | |
ad7775dc TF |
1378 | } |
1379 | ||
1380 | /** | |
1381 | * build_hdr_descs_arr - build a header descriptor array | |
1382 | * @skb - socket buffer | |
1383 | * @num_entries - number of descriptors to be sent | |
1384 | * @subcrq - first TX descriptor | |
1385 | * @hdr_field - bit field determining which headers will be sent | |
1386 | * | |
1387 | * This function will build a TX descriptor array with applicable | |
1388 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. | |
1389 | */ | |
1390 | ||
1391 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, | |
1392 | int *num_entries, u8 hdr_field) | |
1393 | { | |
1394 | int hdr_len[3] = {0, 0, 0}; | |
2de09681 | 1395 | int tot_len; |
ad7775dc TF |
1396 | u8 *hdr_data = txbuff->hdr_data; |
1397 | ||
1398 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, | |
1399 | txbuff->hdr_data); | |
2de09681 | 1400 | *num_entries += create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, |
ad7775dc TF |
1401 | txbuff->indir_arr + 1); |
1402 | } | |
1403 | ||
1f247a6f TF |
1404 | static int ibmvnic_xmit_workarounds(struct sk_buff *skb, |
1405 | struct net_device *netdev) | |
1406 | { | |
1407 | /* For some backing devices, mishandling of small packets | |
1408 | * can result in a loss of connection or TX stall. Device | |
1409 | * architects recommend that no packet should be smaller | |
1410 | * than the minimum MTU value provided to the driver, so | |
1411 | * pad any packets to that length | |
1412 | */ | |
1413 | if (skb->len < netdev->min_mtu) | |
1414 | return skb_put_padto(skb, netdev->min_mtu); | |
7083a45a TF |
1415 | |
1416 | return 0; | |
1f247a6f TF |
1417 | } |
1418 | ||
94b2bb28 | 1419 | static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
032c5e82 TF |
1420 | { |
1421 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1422 | int queue_num = skb_get_queue_mapping(skb); | |
ad7775dc | 1423 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
032c5e82 TF |
1424 | struct device *dev = &adapter->vdev->dev; |
1425 | struct ibmvnic_tx_buff *tx_buff = NULL; | |
142c0ac4 | 1426 | struct ibmvnic_sub_crq_queue *tx_scrq; |
032c5e82 TF |
1427 | struct ibmvnic_tx_pool *tx_pool; |
1428 | unsigned int tx_send_failed = 0; | |
1429 | unsigned int tx_map_failed = 0; | |
1430 | unsigned int tx_dropped = 0; | |
1431 | unsigned int tx_packets = 0; | |
1432 | unsigned int tx_bytes = 0; | |
1433 | dma_addr_t data_dma_addr; | |
1434 | struct netdev_queue *txq; | |
032c5e82 TF |
1435 | unsigned long lpar_rc; |
1436 | union sub_crq tx_crq; | |
1437 | unsigned int offset; | |
ad7775dc | 1438 | int num_entries = 1; |
032c5e82 TF |
1439 | unsigned char *dst; |
1440 | u64 *handle_array; | |
1441 | int index = 0; | |
a0dca10f | 1442 | u8 proto = 0; |
94b2bb28 | 1443 | netdev_tx_t ret = NETDEV_TX_OK; |
032c5e82 | 1444 | |
ed651a10 | 1445 | if (adapter->resetting) { |
7f5b0308 TF |
1446 | if (!netif_subqueue_stopped(netdev, skb)) |
1447 | netif_stop_subqueue(netdev, queue_num); | |
1448 | dev_kfree_skb_any(skb); | |
1449 | ||
032c5e82 TF |
1450 | tx_send_failed++; |
1451 | tx_dropped++; | |
7f5b0308 | 1452 | ret = NETDEV_TX_OK; |
032c5e82 TF |
1453 | goto out; |
1454 | } | |
1455 | ||
7083a45a | 1456 | if (ibmvnic_xmit_workarounds(skb, netdev)) { |
1f247a6f TF |
1457 | tx_dropped++; |
1458 | tx_send_failed++; | |
1459 | ret = NETDEV_TX_OK; | |
1460 | goto out; | |
1461 | } | |
06b3e357 TF |
1462 | if (skb_is_gso(skb)) |
1463 | tx_pool = &adapter->tso_pool[queue_num]; | |
1464 | else | |
1465 | tx_pool = &adapter->tx_pool[queue_num]; | |
1f247a6f | 1466 | |
161b8a81 NF |
1467 | tx_scrq = adapter->tx_scrq[queue_num]; |
1468 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); | |
1469 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
1470 | be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs)); | |
1471 | ||
032c5e82 | 1472 | index = tx_pool->free_map[tx_pool->consumer_index]; |
fdb06105 | 1473 | |
86b61a5f TF |
1474 | if (index == IBMVNIC_INVALID_MAP) { |
1475 | dev_kfree_skb_any(skb); | |
1476 | tx_send_failed++; | |
1477 | tx_dropped++; | |
1478 | ret = NETDEV_TX_OK; | |
1479 | goto out; | |
1480 | } | |
1481 | ||
1482 | tx_pool->free_map[tx_pool->consumer_index] = IBMVNIC_INVALID_MAP; | |
1483 | ||
06b3e357 TF |
1484 | offset = index * tx_pool->buf_size; |
1485 | dst = tx_pool->long_term_buff.buff + offset; | |
1486 | memset(dst, 0, tx_pool->buf_size); | |
1487 | data_dma_addr = tx_pool->long_term_buff.addr + offset; | |
032c5e82 | 1488 | |
15482056 TF |
1489 | if (skb_shinfo(skb)->nr_frags) { |
1490 | int cur, i; | |
1491 | ||
1492 | /* Copy the head */ | |
1493 | skb_copy_from_linear_data(skb, dst, skb_headlen(skb)); | |
1494 | cur = skb_headlen(skb); | |
1495 | ||
1496 | /* Copy the frags */ | |
1497 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1498 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
1499 | ||
1500 | memcpy(dst + cur, | |
1501 | page_address(skb_frag_page(frag)) + | |
1502 | frag->page_offset, skb_frag_size(frag)); | |
1503 | cur += skb_frag_size(frag); | |
1504 | } | |
1505 | } else { | |
1506 | skb_copy_from_linear_data(skb, dst, skb->len); | |
1507 | } | |
1508 | ||
032c5e82 | 1509 | tx_pool->consumer_index = |
06b3e357 | 1510 | (tx_pool->consumer_index + 1) % tx_pool->num_buffers; |
032c5e82 TF |
1511 | |
1512 | tx_buff = &tx_pool->tx_buff[index]; | |
1513 | tx_buff->skb = skb; | |
1514 | tx_buff->data_dma[0] = data_dma_addr; | |
1515 | tx_buff->data_len[0] = skb->len; | |
1516 | tx_buff->index = index; | |
1517 | tx_buff->pool_index = queue_num; | |
1518 | tx_buff->last_frag = true; | |
032c5e82 TF |
1519 | |
1520 | memset(&tx_crq, 0, sizeof(tx_crq)); | |
1521 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; | |
1522 | tx_crq.v1.type = IBMVNIC_TX_DESC; | |
1523 | tx_crq.v1.n_crq_elem = 1; | |
1524 | tx_crq.v1.n_sge = 1; | |
1525 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; | |
06b3e357 | 1526 | |
fdb06105 | 1527 | if (skb_is_gso(skb)) |
06b3e357 TF |
1528 | tx_crq.v1.correlator = |
1529 | cpu_to_be32(index | IBMVNIC_TSO_POOL_MASK); | |
fdb06105 | 1530 | else |
06b3e357 TF |
1531 | tx_crq.v1.correlator = cpu_to_be32(index); |
1532 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); | |
032c5e82 TF |
1533 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); |
1534 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); | |
1535 | ||
e84b4794 | 1536 | if (adapter->vlan_header_insertion && skb_vlan_tag_present(skb)) { |
032c5e82 TF |
1537 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; |
1538 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); | |
1539 | } | |
1540 | ||
1541 | if (skb->protocol == htons(ETH_P_IP)) { | |
a0dca10f TF |
1542 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; |
1543 | proto = ip_hdr(skb)->protocol; | |
1544 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
1545 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; | |
1546 | proto = ipv6_hdr(skb)->nexthdr; | |
032c5e82 TF |
1547 | } |
1548 | ||
a0dca10f TF |
1549 | if (proto == IPPROTO_TCP) |
1550 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; | |
1551 | else if (proto == IPPROTO_UDP) | |
1552 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; | |
1553 | ||
ad7775dc | 1554 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
032c5e82 | 1555 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
ad7775dc TF |
1556 | hdrs += 2; |
1557 | } | |
fdb06105 TF |
1558 | if (skb_is_gso(skb)) { |
1559 | tx_crq.v1.flags1 |= IBMVNIC_TX_LSO; | |
1560 | tx_crq.v1.mss = cpu_to_be16(skb_shinfo(skb)->gso_size); | |
1561 | hdrs += 2; | |
1562 | } | |
ad7775dc | 1563 | /* determine if l2/3/4 headers are sent to firmware */ |
2fa56a49 | 1564 | if ((*hdrs >> 7) & 1) { |
ad7775dc TF |
1565 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); |
1566 | tx_crq.v1.n_crq_elem = num_entries; | |
ecba616e | 1567 | tx_buff->num_entries = num_entries; |
ad7775dc TF |
1568 | tx_buff->indir_arr[0] = tx_crq; |
1569 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, | |
1570 | sizeof(tx_buff->indir_arr), | |
1571 | DMA_TO_DEVICE); | |
1572 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { | |
7f5b0308 TF |
1573 | dev_kfree_skb_any(skb); |
1574 | tx_buff->skb = NULL; | |
ad7775dc TF |
1575 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
1576 | dev_err(dev, "tx: unable to map descriptor array\n"); | |
1577 | tx_map_failed++; | |
1578 | tx_dropped++; | |
7f5b0308 | 1579 | ret = NETDEV_TX_OK; |
86b61a5f | 1580 | goto tx_err_out; |
ad7775dc | 1581 | } |
498cd8e4 | 1582 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
ad7775dc TF |
1583 | (u64)tx_buff->indir_dma, |
1584 | (u64)num_entries); | |
1585 | } else { | |
ecba616e | 1586 | tx_buff->num_entries = num_entries; |
498cd8e4 JA |
1587 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
1588 | &tx_crq); | |
ad7775dc | 1589 | } |
032c5e82 | 1590 | if (lpar_rc != H_SUCCESS) { |
2d14d379 TF |
1591 | if (lpar_rc != H_CLOSED && lpar_rc != H_PARAMETER) |
1592 | dev_err_ratelimited(dev, "tx: send failed\n"); | |
7f5b0308 TF |
1593 | dev_kfree_skb_any(skb); |
1594 | tx_buff->skb = NULL; | |
1595 | ||
5a18e1e0 TF |
1596 | if (lpar_rc == H_CLOSED || adapter->failover_pending) { |
1597 | /* Disable TX and report carrier off if queue is closed | |
1598 | * or pending failover. | |
b8c80b84 TF |
1599 | * Firmware guarantees that a signal will be sent to the |
1600 | * driver, triggering a reset or some other action. | |
1601 | */ | |
1602 | netif_tx_stop_all_queues(netdev); | |
1603 | netif_carrier_off(netdev); | |
1604 | } | |
7f5b0308 | 1605 | |
032c5e82 TF |
1606 | tx_send_failed++; |
1607 | tx_dropped++; | |
7f5b0308 | 1608 | ret = NETDEV_TX_OK; |
86b61a5f | 1609 | goto tx_err_out; |
032c5e82 | 1610 | } |
142c0ac4 | 1611 | |
ffc385b9 | 1612 | if (atomic_add_return(num_entries, &tx_scrq->used) |
58c8c0c0 | 1613 | >= adapter->req_tx_entries_per_subcrq) { |
0aecb13c | 1614 | netdev_dbg(netdev, "Stopping queue %d\n", queue_num); |
142c0ac4 TF |
1615 | netif_stop_subqueue(netdev, queue_num); |
1616 | } | |
1617 | ||
032c5e82 TF |
1618 | tx_packets++; |
1619 | tx_bytes += skb->len; | |
1620 | txq->trans_start = jiffies; | |
1621 | ret = NETDEV_TX_OK; | |
86b61a5f | 1622 | goto out; |
032c5e82 | 1623 | |
86b61a5f TF |
1624 | tx_err_out: |
1625 | /* roll back consumer index and map array*/ | |
1626 | if (tx_pool->consumer_index == 0) | |
1627 | tx_pool->consumer_index = | |
1628 | tx_pool->num_buffers - 1; | |
1629 | else | |
1630 | tx_pool->consumer_index--; | |
1631 | tx_pool->free_map[tx_pool->consumer_index] = index; | |
032c5e82 TF |
1632 | out: |
1633 | netdev->stats.tx_dropped += tx_dropped; | |
1634 | netdev->stats.tx_bytes += tx_bytes; | |
1635 | netdev->stats.tx_packets += tx_packets; | |
1636 | adapter->tx_send_failed += tx_send_failed; | |
1637 | adapter->tx_map_failed += tx_map_failed; | |
3d52b594 JA |
1638 | adapter->tx_stats_buffers[queue_num].packets += tx_packets; |
1639 | adapter->tx_stats_buffers[queue_num].bytes += tx_bytes; | |
1640 | adapter->tx_stats_buffers[queue_num].dropped_packets += tx_dropped; | |
032c5e82 TF |
1641 | |
1642 | return ret; | |
1643 | } | |
1644 | ||
1645 | static void ibmvnic_set_multi(struct net_device *netdev) | |
1646 | { | |
1647 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1648 | struct netdev_hw_addr *ha; | |
1649 | union ibmvnic_crq crq; | |
1650 | ||
1651 | memset(&crq, 0, sizeof(crq)); | |
1652 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
1653 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
1654 | ||
1655 | if (netdev->flags & IFF_PROMISC) { | |
1656 | if (!adapter->promisc_supported) | |
1657 | return; | |
1658 | } else { | |
1659 | if (netdev->flags & IFF_ALLMULTI) { | |
1660 | /* Accept all multicast */ | |
1661 | memset(&crq, 0, sizeof(crq)); | |
1662 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1663 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1664 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; | |
1665 | ibmvnic_send_crq(adapter, &crq); | |
1666 | } else if (netdev_mc_empty(netdev)) { | |
1667 | /* Reject all multicast */ | |
1668 | memset(&crq, 0, sizeof(crq)); | |
1669 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1670 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1671 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; | |
1672 | ibmvnic_send_crq(adapter, &crq); | |
1673 | } else { | |
1674 | /* Accept one or more multicast(s) */ | |
1675 | netdev_for_each_mc_addr(ha, netdev) { | |
1676 | memset(&crq, 0, sizeof(crq)); | |
1677 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1678 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1679 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; | |
1680 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], | |
1681 | ha->addr); | |
1682 | ibmvnic_send_crq(adapter, &crq); | |
1683 | } | |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | ||
c26eba03 | 1688 | static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p) |
032c5e82 TF |
1689 | { |
1690 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1691 | struct sockaddr *addr = p; | |
1692 | union ibmvnic_crq crq; | |
9c4eaabd | 1693 | int rc; |
032c5e82 TF |
1694 | |
1695 | if (!is_valid_ether_addr(addr->sa_data)) | |
1696 | return -EADDRNOTAVAIL; | |
1697 | ||
1698 | memset(&crq, 0, sizeof(crq)); | |
1699 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; | |
1700 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; | |
1701 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); | |
f813614f TF |
1702 | |
1703 | init_completion(&adapter->fw_done); | |
9c4eaabd TF |
1704 | rc = ibmvnic_send_crq(adapter, &crq); |
1705 | if (rc) | |
1706 | return rc; | |
f813614f | 1707 | wait_for_completion(&adapter->fw_done); |
032c5e82 | 1708 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ |
f813614f | 1709 | return adapter->fw_done_rc ? -EIO : 0; |
032c5e82 TF |
1710 | } |
1711 | ||
c26eba03 JA |
1712 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) |
1713 | { | |
1714 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1715 | struct sockaddr *addr = p; | |
f813614f | 1716 | int rc; |
c26eba03 | 1717 | |
3d166130 | 1718 | if (adapter->state == VNIC_PROBED) { |
c26eba03 JA |
1719 | memcpy(&adapter->desired.mac, addr, sizeof(struct sockaddr)); |
1720 | adapter->mac_change_pending = true; | |
1721 | return 0; | |
1722 | } | |
1723 | ||
f813614f | 1724 | rc = __ibmvnic_set_mac(netdev, addr); |
c26eba03 | 1725 | |
f813614f | 1726 | return rc; |
c26eba03 JA |
1727 | } |
1728 | ||
ed651a10 NF |
1729 | /** |
1730 | * do_reset returns zero if we are able to keep processing reset events, or | |
1731 | * non-zero if we hit a fatal error and must halt. | |
1732 | */ | |
1733 | static int do_reset(struct ibmvnic_adapter *adapter, | |
1734 | struct ibmvnic_rwi *rwi, u32 reset_state) | |
032c5e82 | 1735 | { |
896d8695 | 1736 | u64 old_num_rx_queues, old_num_tx_queues; |
5bf032ef | 1737 | u64 old_num_rx_slots, old_num_tx_slots; |
ed651a10 NF |
1738 | struct net_device *netdev = adapter->netdev; |
1739 | int i, rc; | |
1740 | ||
d1cf33d9 NF |
1741 | netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n", |
1742 | rwi->reset_reason); | |
1743 | ||
ed651a10 NF |
1744 | netif_carrier_off(netdev); |
1745 | adapter->reset_reason = rwi->reset_reason; | |
1746 | ||
896d8695 JA |
1747 | old_num_rx_queues = adapter->req_rx_queues; |
1748 | old_num_tx_queues = adapter->req_tx_queues; | |
5bf032ef TF |
1749 | old_num_rx_slots = adapter->req_rx_add_entries_per_subcrq; |
1750 | old_num_tx_slots = adapter->req_tx_entries_per_subcrq; | |
896d8695 | 1751 | |
30f79625 NF |
1752 | ibmvnic_cleanup(netdev); |
1753 | ||
1754 | if (adapter->reset_reason != VNIC_RESET_MOBILITY && | |
1755 | adapter->reset_reason != VNIC_RESET_FAILOVER) { | |
18b8d6bb TF |
1756 | rc = __ibmvnic_close(netdev); |
1757 | if (rc) | |
1758 | return rc; | |
ed651a10 NF |
1759 | } |
1760 | ||
c26eba03 JA |
1761 | if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM || |
1762 | adapter->wait_for_reset) { | |
1763 | release_resources(adapter); | |
d7c0ef36 | 1764 | release_sub_crqs(adapter, 1); |
c26eba03 JA |
1765 | release_crq_queue(adapter); |
1766 | } | |
1767 | ||
8cb31cfc JA |
1768 | if (adapter->reset_reason != VNIC_RESET_NON_FATAL) { |
1769 | /* remove the closed state so when we call open it appears | |
1770 | * we are coming from the probed state. | |
1771 | */ | |
1772 | adapter->state = VNIC_PROBED; | |
032c5e82 | 1773 | |
30f79625 NF |
1774 | if (adapter->wait_for_reset) { |
1775 | rc = init_crq_queue(adapter); | |
1776 | } else if (adapter->reset_reason == VNIC_RESET_MOBILITY) { | |
1777 | rc = ibmvnic_reenable_crq_queue(adapter); | |
1778 | release_sub_crqs(adapter, 1); | |
1779 | } else { | |
1780 | rc = ibmvnic_reset_crq(adapter); | |
1781 | if (!rc) | |
1782 | rc = vio_enable_interrupts(adapter->vdev); | |
1783 | } | |
1784 | ||
1785 | if (rc) { | |
1786 | netdev_err(adapter->netdev, | |
1787 | "Couldn't initialize crq. rc=%d\n", rc); | |
1788 | return rc; | |
1789 | } | |
1790 | ||
8a348450 | 1791 | rc = ibmvnic_reset_init(adapter); |
8cb31cfc | 1792 | if (rc) |
2a1bf511 | 1793 | return IBMVNIC_INIT_FAILED; |
ed651a10 | 1794 | |
8cb31cfc JA |
1795 | /* If the adapter was in PROBE state prior to the reset, |
1796 | * exit here. | |
1797 | */ | |
1798 | if (reset_state == VNIC_PROBED) | |
1799 | return 0; | |
ed651a10 | 1800 | |
8cb31cfc JA |
1801 | rc = ibmvnic_login(netdev); |
1802 | if (rc) { | |
3578a7ec JA |
1803 | adapter->state = reset_state; |
1804 | return rc; | |
8cb31cfc | 1805 | } |
ed651a10 | 1806 | |
c26eba03 JA |
1807 | if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM || |
1808 | adapter->wait_for_reset) { | |
1809 | rc = init_resources(adapter); | |
1810 | if (rc) | |
1811 | return rc; | |
896d8695 | 1812 | } else if (adapter->req_rx_queues != old_num_rx_queues || |
5bf032ef TF |
1813 | adapter->req_tx_queues != old_num_tx_queues || |
1814 | adapter->req_rx_add_entries_per_subcrq != | |
1815 | old_num_rx_slots || | |
1816 | adapter->req_tx_entries_per_subcrq != | |
1817 | old_num_tx_slots) { | |
896d8695 JA |
1818 | release_rx_pools(adapter); |
1819 | release_tx_pools(adapter); | |
86f669b2 | 1820 | release_napi(adapter); |
a5681e20 JK |
1821 | release_vpd_data(adapter); |
1822 | ||
1823 | rc = init_resources(adapter); | |
f611a5b4 TF |
1824 | if (rc) |
1825 | return rc; | |
a5681e20 | 1826 | |
c26eba03 JA |
1827 | } else { |
1828 | rc = reset_tx_pools(adapter); | |
1829 | if (rc) | |
1830 | return rc; | |
8c0543ad | 1831 | |
c26eba03 JA |
1832 | rc = reset_rx_pools(adapter); |
1833 | if (rc) | |
1834 | return rc; | |
c26eba03 | 1835 | } |
134bbe7f | 1836 | ibmvnic_disable_irqs(adapter); |
8cb31cfc | 1837 | } |
e676d81c JA |
1838 | adapter->state = VNIC_CLOSED; |
1839 | ||
1840 | if (reset_state == VNIC_CLOSED) | |
1841 | return 0; | |
1842 | ||
ed651a10 NF |
1843 | rc = __ibmvnic_open(netdev); |
1844 | if (rc) { | |
1845 | if (list_empty(&adapter->rwi_list)) | |
1846 | adapter->state = VNIC_CLOSED; | |
1847 | else | |
1848 | adapter->state = reset_state; | |
1849 | ||
1850 | return 0; | |
1851 | } | |
1852 | ||
ed651a10 NF |
1853 | /* kick napi */ |
1854 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1855 | napi_schedule(&adapter->napi[i]); | |
1856 | ||
ebc701b7 NF |
1857 | if (adapter->reset_reason != VNIC_RESET_FAILOVER && |
1858 | adapter->reset_reason != VNIC_RESET_CHANGE_PARAM) | |
986103e7 | 1859 | call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev); |
61d3e1d9 | 1860 | |
cc85c02e TF |
1861 | netif_carrier_on(netdev); |
1862 | ||
ed651a10 NF |
1863 | return 0; |
1864 | } | |
1865 | ||
2770a798 TF |
1866 | static int do_hard_reset(struct ibmvnic_adapter *adapter, |
1867 | struct ibmvnic_rwi *rwi, u32 reset_state) | |
1868 | { | |
1869 | struct net_device *netdev = adapter->netdev; | |
1870 | int rc; | |
1871 | ||
1872 | netdev_dbg(adapter->netdev, "Hard resetting driver (%d)\n", | |
1873 | rwi->reset_reason); | |
1874 | ||
1875 | netif_carrier_off(netdev); | |
1876 | adapter->reset_reason = rwi->reset_reason; | |
1877 | ||
1878 | ibmvnic_cleanup(netdev); | |
1879 | release_resources(adapter); | |
1880 | release_sub_crqs(adapter, 0); | |
1881 | release_crq_queue(adapter); | |
1882 | ||
1883 | /* remove the closed state so when we call open it appears | |
1884 | * we are coming from the probed state. | |
1885 | */ | |
1886 | adapter->state = VNIC_PROBED; | |
1887 | ||
bbd669a8 | 1888 | reinit_completion(&adapter->init_done); |
2770a798 TF |
1889 | rc = init_crq_queue(adapter); |
1890 | if (rc) { | |
1891 | netdev_err(adapter->netdev, | |
1892 | "Couldn't initialize crq. rc=%d\n", rc); | |
1893 | return rc; | |
1894 | } | |
1895 | ||
1896 | rc = ibmvnic_init(adapter); | |
1897 | if (rc) | |
1898 | return rc; | |
1899 | ||
1900 | /* If the adapter was in PROBE state prior to the reset, | |
1901 | * exit here. | |
1902 | */ | |
1903 | if (reset_state == VNIC_PROBED) | |
1904 | return 0; | |
1905 | ||
1906 | rc = ibmvnic_login(netdev); | |
1907 | if (rc) { | |
1908 | adapter->state = VNIC_PROBED; | |
1909 | return 0; | |
1910 | } | |
a5681e20 JK |
1911 | |
1912 | rc = init_resources(adapter); | |
2770a798 TF |
1913 | if (rc) |
1914 | return rc; | |
1915 | ||
1916 | ibmvnic_disable_irqs(adapter); | |
1917 | adapter->state = VNIC_CLOSED; | |
1918 | ||
1919 | if (reset_state == VNIC_CLOSED) | |
1920 | return 0; | |
1921 | ||
1922 | rc = __ibmvnic_open(netdev); | |
1923 | if (rc) { | |
1924 | if (list_empty(&adapter->rwi_list)) | |
1925 | adapter->state = VNIC_CLOSED; | |
1926 | else | |
1927 | adapter->state = reset_state; | |
1928 | ||
1929 | return 0; | |
1930 | } | |
1931 | ||
1932 | netif_carrier_on(netdev); | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
ed651a10 NF |
1937 | static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter) |
1938 | { | |
1939 | struct ibmvnic_rwi *rwi; | |
6c5c7489 | 1940 | unsigned long flags; |
ed651a10 | 1941 | |
6c5c7489 | 1942 | spin_lock_irqsave(&adapter->rwi_lock, flags); |
ed651a10 NF |
1943 | |
1944 | if (!list_empty(&adapter->rwi_list)) { | |
1945 | rwi = list_first_entry(&adapter->rwi_list, struct ibmvnic_rwi, | |
1946 | list); | |
1947 | list_del(&rwi->list); | |
1948 | } else { | |
1949 | rwi = NULL; | |
1950 | } | |
1951 | ||
6c5c7489 | 1952 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
ed651a10 NF |
1953 | return rwi; |
1954 | } | |
1955 | ||
1956 | static void free_all_rwi(struct ibmvnic_adapter *adapter) | |
1957 | { | |
1958 | struct ibmvnic_rwi *rwi; | |
1959 | ||
1960 | rwi = get_next_rwi(adapter); | |
1961 | while (rwi) { | |
1962 | kfree(rwi); | |
1963 | rwi = get_next_rwi(adapter); | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | static void __ibmvnic_reset(struct work_struct *work) | |
1968 | { | |
1969 | struct ibmvnic_rwi *rwi; | |
1970 | struct ibmvnic_adapter *adapter; | |
1971 | struct net_device *netdev; | |
a5681e20 | 1972 | bool we_lock_rtnl = false; |
ed651a10 | 1973 | u32 reset_state; |
c26eba03 | 1974 | int rc = 0; |
ed651a10 NF |
1975 | |
1976 | adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset); | |
1977 | netdev = adapter->netdev; | |
1978 | ||
a5681e20 JK |
1979 | /* netif_set_real_num_xx_queues needs to take rtnl lock here |
1980 | * unless wait_for_reset is set, in which case the rtnl lock | |
1981 | * has already been taken before initializing the reset | |
1982 | */ | |
1983 | if (!adapter->wait_for_reset) { | |
1984 | rtnl_lock(); | |
1985 | we_lock_rtnl = true; | |
1986 | } | |
ed651a10 NF |
1987 | reset_state = adapter->state; |
1988 | ||
1989 | rwi = get_next_rwi(adapter); | |
1990 | while (rwi) { | |
2770a798 TF |
1991 | if (adapter->force_reset_recovery) { |
1992 | adapter->force_reset_recovery = false; | |
1993 | rc = do_hard_reset(adapter, rwi, reset_state); | |
1994 | } else { | |
1995 | rc = do_reset(adapter, rwi, reset_state); | |
1996 | } | |
ed651a10 | 1997 | kfree(rwi); |
2770a798 TF |
1998 | if (rc && rc != IBMVNIC_INIT_FAILED && |
1999 | !adapter->force_reset_recovery) | |
ed651a10 NF |
2000 | break; |
2001 | ||
2002 | rwi = get_next_rwi(adapter); | |
2003 | } | |
2004 | ||
c26eba03 JA |
2005 | if (adapter->wait_for_reset) { |
2006 | adapter->wait_for_reset = false; | |
2007 | adapter->reset_done_rc = rc; | |
2008 | complete(&adapter->reset_done); | |
2009 | } | |
2010 | ||
ed651a10 | 2011 | if (rc) { |
d1cf33d9 | 2012 | netdev_dbg(adapter->netdev, "Reset failed\n"); |
ed651a10 | 2013 | free_all_rwi(adapter); |
ed651a10 NF |
2014 | } |
2015 | ||
2016 | adapter->resetting = false; | |
a5681e20 JK |
2017 | if (we_lock_rtnl) |
2018 | rtnl_unlock(); | |
ed651a10 NF |
2019 | } |
2020 | ||
af894d23 TF |
2021 | static int ibmvnic_reset(struct ibmvnic_adapter *adapter, |
2022 | enum ibmvnic_reset_reason reason) | |
ed651a10 | 2023 | { |
2770a798 | 2024 | struct list_head *entry, *tmp_entry; |
ed651a10 NF |
2025 | struct ibmvnic_rwi *rwi, *tmp; |
2026 | struct net_device *netdev = adapter->netdev; | |
6c5c7489 | 2027 | unsigned long flags; |
af894d23 | 2028 | int ret; |
ed651a10 NF |
2029 | |
2030 | if (adapter->state == VNIC_REMOVING || | |
5a18e1e0 TF |
2031 | adapter->state == VNIC_REMOVED || |
2032 | adapter->failover_pending) { | |
af894d23 | 2033 | ret = EBUSY; |
5a18e1e0 | 2034 | netdev_dbg(netdev, "Adapter removing or pending failover, skipping reset\n"); |
af894d23 | 2035 | goto err; |
ed651a10 NF |
2036 | } |
2037 | ||
6a2fb0e9 NF |
2038 | if (adapter->state == VNIC_PROBING) { |
2039 | netdev_warn(netdev, "Adapter reset during probe\n"); | |
af894d23 TF |
2040 | ret = adapter->init_done_rc = EAGAIN; |
2041 | goto err; | |
6a2fb0e9 NF |
2042 | } |
2043 | ||
6c5c7489 | 2044 | spin_lock_irqsave(&adapter->rwi_lock, flags); |
ed651a10 NF |
2045 | |
2046 | list_for_each(entry, &adapter->rwi_list) { | |
2047 | tmp = list_entry(entry, struct ibmvnic_rwi, list); | |
2048 | if (tmp->reset_reason == reason) { | |
d1cf33d9 | 2049 | netdev_dbg(netdev, "Skipping matching reset\n"); |
6c5c7489 | 2050 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
af894d23 TF |
2051 | ret = EBUSY; |
2052 | goto err; | |
ed651a10 NF |
2053 | } |
2054 | } | |
2055 | ||
1d1bbc37 | 2056 | rwi = kzalloc(sizeof(*rwi), GFP_ATOMIC); |
ed651a10 | 2057 | if (!rwi) { |
6c5c7489 | 2058 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
ed651a10 | 2059 | ibmvnic_close(netdev); |
af894d23 TF |
2060 | ret = ENOMEM; |
2061 | goto err; | |
ed651a10 | 2062 | } |
2770a798 TF |
2063 | /* if we just received a transport event, |
2064 | * flush reset queue and process this reset | |
2065 | */ | |
2066 | if (adapter->force_reset_recovery && !list_empty(&adapter->rwi_list)) { | |
2067 | list_for_each_safe(entry, tmp_entry, &adapter->rwi_list) | |
2068 | list_del(entry); | |
2069 | } | |
ed651a10 NF |
2070 | rwi->reset_reason = reason; |
2071 | list_add_tail(&rwi->list, &adapter->rwi_list); | |
6c5c7489 | 2072 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
06e43d7f | 2073 | adapter->resetting = true; |
d1cf33d9 | 2074 | netdev_dbg(adapter->netdev, "Scheduling reset (reason %d)\n", reason); |
ed651a10 | 2075 | schedule_work(&adapter->ibmvnic_reset); |
af894d23 TF |
2076 | |
2077 | return 0; | |
2078 | err: | |
2079 | if (adapter->wait_for_reset) | |
2080 | adapter->wait_for_reset = false; | |
2081 | return -ret; | |
ed651a10 NF |
2082 | } |
2083 | ||
2084 | static void ibmvnic_tx_timeout(struct net_device *dev) | |
2085 | { | |
2086 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
2087 | ||
2088 | ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT); | |
032c5e82 TF |
2089 | } |
2090 | ||
2091 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, | |
2092 | struct ibmvnic_rx_buff *rx_buff) | |
2093 | { | |
2094 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; | |
2095 | ||
2096 | rx_buff->skb = NULL; | |
2097 | ||
2098 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); | |
2099 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; | |
2100 | ||
2101 | atomic_dec(&pool->available); | |
2102 | } | |
2103 | ||
2104 | static int ibmvnic_poll(struct napi_struct *napi, int budget) | |
2105 | { | |
2106 | struct net_device *netdev = napi->dev; | |
2107 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2108 | int scrq_num = (int)(napi - adapter->napi); | |
2109 | int frames_processed = 0; | |
152ce47d | 2110 | |
032c5e82 TF |
2111 | restart_poll: |
2112 | while (frames_processed < budget) { | |
2113 | struct sk_buff *skb; | |
2114 | struct ibmvnic_rx_buff *rx_buff; | |
2115 | union sub_crq *next; | |
2116 | u32 length; | |
2117 | u16 offset; | |
2118 | u8 flags = 0; | |
2119 | ||
3468656f JA |
2120 | if (unlikely(adapter->resetting && |
2121 | adapter->reset_reason != VNIC_RESET_NON_FATAL)) { | |
21ecba6c TF |
2122 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); |
2123 | napi_complete_done(napi, frames_processed); | |
2124 | return frames_processed; | |
2125 | } | |
2126 | ||
032c5e82 TF |
2127 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) |
2128 | break; | |
2129 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); | |
2130 | rx_buff = | |
2131 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> | |
2132 | rx_comp.correlator); | |
2133 | /* do error checking */ | |
2134 | if (next->rx_comp.rc) { | |
e1cea2e7 JA |
2135 | netdev_dbg(netdev, "rx buffer returned with rc %x\n", |
2136 | be16_to_cpu(next->rx_comp.rc)); | |
032c5e82 TF |
2137 | /* free the entry */ |
2138 | next->rx_comp.first = 0; | |
4b9b0f01 | 2139 | dev_kfree_skb_any(rx_buff->skb); |
032c5e82 | 2140 | remove_buff_from_pool(adapter, rx_buff); |
ca05e316 | 2141 | continue; |
abe27a88 TF |
2142 | } else if (!rx_buff->skb) { |
2143 | /* free the entry */ | |
2144 | next->rx_comp.first = 0; | |
2145 | remove_buff_from_pool(adapter, rx_buff); | |
2146 | continue; | |
032c5e82 TF |
2147 | } |
2148 | ||
2149 | length = be32_to_cpu(next->rx_comp.len); | |
2150 | offset = be16_to_cpu(next->rx_comp.off_frame_data); | |
2151 | flags = next->rx_comp.flags; | |
2152 | skb = rx_buff->skb; | |
2153 | skb_copy_to_linear_data(skb, rx_buff->data + offset, | |
2154 | length); | |
6052d5e2 MFV |
2155 | |
2156 | /* VLAN Header has been stripped by the system firmware and | |
2157 | * needs to be inserted by the driver | |
2158 | */ | |
2159 | if (adapter->rx_vlan_header_insertion && | |
2160 | (flags & IBMVNIC_VLAN_STRIPPED)) | |
2161 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
2162 | ntohs(next->rx_comp.vlan_tci)); | |
2163 | ||
032c5e82 TF |
2164 | /* free the entry */ |
2165 | next->rx_comp.first = 0; | |
2166 | remove_buff_from_pool(adapter, rx_buff); | |
2167 | ||
2168 | skb_put(skb, length); | |
2169 | skb->protocol = eth_type_trans(skb, netdev); | |
94ca305f | 2170 | skb_record_rx_queue(skb, scrq_num); |
032c5e82 TF |
2171 | |
2172 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && | |
2173 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { | |
2174 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2175 | } | |
2176 | ||
2177 | length = skb->len; | |
2178 | napi_gro_receive(napi, skb); /* send it up */ | |
2179 | netdev->stats.rx_packets++; | |
2180 | netdev->stats.rx_bytes += length; | |
3d52b594 JA |
2181 | adapter->rx_stats_buffers[scrq_num].packets++; |
2182 | adapter->rx_stats_buffers[scrq_num].bytes += length; | |
032c5e82 TF |
2183 | frames_processed++; |
2184 | } | |
152ce47d NF |
2185 | |
2186 | if (adapter->state != VNIC_CLOSING) | |
2187 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); | |
032c5e82 TF |
2188 | |
2189 | if (frames_processed < budget) { | |
2190 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
6ad20165 | 2191 | napi_complete_done(napi, frames_processed); |
032c5e82 TF |
2192 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && |
2193 | napi_reschedule(napi)) { | |
2194 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
2195 | goto restart_poll; | |
2196 | } | |
2197 | } | |
2198 | return frames_processed; | |
2199 | } | |
2200 | ||
c26eba03 JA |
2201 | static int wait_for_reset(struct ibmvnic_adapter *adapter) |
2202 | { | |
af894d23 TF |
2203 | int rc, ret; |
2204 | ||
c26eba03 JA |
2205 | adapter->fallback.mtu = adapter->req_mtu; |
2206 | adapter->fallback.rx_queues = adapter->req_rx_queues; | |
2207 | adapter->fallback.tx_queues = adapter->req_tx_queues; | |
2208 | adapter->fallback.rx_entries = adapter->req_rx_add_entries_per_subcrq; | |
2209 | adapter->fallback.tx_entries = adapter->req_tx_entries_per_subcrq; | |
2210 | ||
2211 | init_completion(&adapter->reset_done); | |
c26eba03 | 2212 | adapter->wait_for_reset = true; |
af894d23 TF |
2213 | rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM); |
2214 | if (rc) | |
2215 | return rc; | |
c26eba03 JA |
2216 | wait_for_completion(&adapter->reset_done); |
2217 | ||
af894d23 | 2218 | ret = 0; |
c26eba03 | 2219 | if (adapter->reset_done_rc) { |
af894d23 | 2220 | ret = -EIO; |
c26eba03 JA |
2221 | adapter->desired.mtu = adapter->fallback.mtu; |
2222 | adapter->desired.rx_queues = adapter->fallback.rx_queues; | |
2223 | adapter->desired.tx_queues = adapter->fallback.tx_queues; | |
2224 | adapter->desired.rx_entries = adapter->fallback.rx_entries; | |
2225 | adapter->desired.tx_entries = adapter->fallback.tx_entries; | |
2226 | ||
2227 | init_completion(&adapter->reset_done); | |
af894d23 TF |
2228 | adapter->wait_for_reset = true; |
2229 | rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM); | |
2230 | if (rc) | |
2231 | return ret; | |
c26eba03 JA |
2232 | wait_for_completion(&adapter->reset_done); |
2233 | } | |
2234 | adapter->wait_for_reset = false; | |
2235 | ||
af894d23 | 2236 | return ret; |
c26eba03 JA |
2237 | } |
2238 | ||
3a807b75 JA |
2239 | static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu) |
2240 | { | |
c26eba03 JA |
2241 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2242 | ||
2243 | adapter->desired.mtu = new_mtu + ETH_HLEN; | |
2244 | ||
2245 | return wait_for_reset(adapter); | |
3a807b75 JA |
2246 | } |
2247 | ||
f10b09ef TF |
2248 | static netdev_features_t ibmvnic_features_check(struct sk_buff *skb, |
2249 | struct net_device *dev, | |
2250 | netdev_features_t features) | |
2251 | { | |
2252 | /* Some backing hardware adapters can not | |
2253 | * handle packets with a MSS less than 224 | |
2254 | * or with only one segment. | |
2255 | */ | |
2256 | if (skb_is_gso(skb)) { | |
2257 | if (skb_shinfo(skb)->gso_size < 224 || | |
2258 | skb_shinfo(skb)->gso_segs == 1) | |
2259 | features &= ~NETIF_F_GSO_MASK; | |
2260 | } | |
2261 | ||
2262 | return features; | |
2263 | } | |
2264 | ||
032c5e82 TF |
2265 | static const struct net_device_ops ibmvnic_netdev_ops = { |
2266 | .ndo_open = ibmvnic_open, | |
2267 | .ndo_stop = ibmvnic_close, | |
2268 | .ndo_start_xmit = ibmvnic_xmit, | |
2269 | .ndo_set_rx_mode = ibmvnic_set_multi, | |
2270 | .ndo_set_mac_address = ibmvnic_set_mac, | |
2271 | .ndo_validate_addr = eth_validate_addr, | |
032c5e82 | 2272 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
3a807b75 | 2273 | .ndo_change_mtu = ibmvnic_change_mtu, |
f10b09ef | 2274 | .ndo_features_check = ibmvnic_features_check, |
032c5e82 TF |
2275 | }; |
2276 | ||
2277 | /* ethtool functions */ | |
2278 | ||
8a43379f PR |
2279 | static int ibmvnic_get_link_ksettings(struct net_device *netdev, |
2280 | struct ethtool_link_ksettings *cmd) | |
032c5e82 | 2281 | { |
8a43379f PR |
2282 | u32 supported, advertising; |
2283 | ||
2284 | supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | | |
032c5e82 | 2285 | SUPPORTED_FIBRE); |
8a43379f | 2286 | advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | |
032c5e82 | 2287 | ADVERTISED_FIBRE); |
8a43379f PR |
2288 | cmd->base.speed = SPEED_1000; |
2289 | cmd->base.duplex = DUPLEX_FULL; | |
2290 | cmd->base.port = PORT_FIBRE; | |
2291 | cmd->base.phy_address = 0; | |
2292 | cmd->base.autoneg = AUTONEG_ENABLE; | |
2293 | ||
2294 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
2295 | supported); | |
2296 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
2297 | advertising); | |
2298 | ||
032c5e82 TF |
2299 | return 0; |
2300 | } | |
2301 | ||
4e6759be | 2302 | static void ibmvnic_get_drvinfo(struct net_device *netdev, |
032c5e82 TF |
2303 | struct ethtool_drvinfo *info) |
2304 | { | |
4e6759be DANR |
2305 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2306 | ||
032c5e82 TF |
2307 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); |
2308 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); | |
4e6759be DANR |
2309 | strlcpy(info->fw_version, adapter->fw_version, |
2310 | sizeof(info->fw_version)); | |
032c5e82 TF |
2311 | } |
2312 | ||
2313 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) | |
2314 | { | |
2315 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2316 | ||
2317 | return adapter->msg_enable; | |
2318 | } | |
2319 | ||
2320 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) | |
2321 | { | |
2322 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2323 | ||
2324 | adapter->msg_enable = data; | |
2325 | } | |
2326 | ||
2327 | static u32 ibmvnic_get_link(struct net_device *netdev) | |
2328 | { | |
2329 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2330 | ||
2331 | /* Don't need to send a query because we request a logical link up at | |
2332 | * init and then we wait for link state indications | |
2333 | */ | |
2334 | return adapter->logical_link_state; | |
2335 | } | |
2336 | ||
2337 | static void ibmvnic_get_ringparam(struct net_device *netdev, | |
2338 | struct ethtool_ringparam *ring) | |
2339 | { | |
bc131b3a JA |
2340 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2341 | ||
723ad916 TF |
2342 | if (adapter->priv_flags & IBMVNIC_USE_SERVER_MAXES) { |
2343 | ring->rx_max_pending = adapter->max_rx_add_entries_per_subcrq; | |
2344 | ring->tx_max_pending = adapter->max_tx_entries_per_subcrq; | |
2345 | } else { | |
2346 | ring->rx_max_pending = IBMVNIC_MAX_QUEUE_SZ; | |
2347 | ring->tx_max_pending = IBMVNIC_MAX_QUEUE_SZ; | |
2348 | } | |
032c5e82 TF |
2349 | ring->rx_mini_max_pending = 0; |
2350 | ring->rx_jumbo_max_pending = 0; | |
bc131b3a JA |
2351 | ring->rx_pending = adapter->req_rx_add_entries_per_subcrq; |
2352 | ring->tx_pending = adapter->req_tx_entries_per_subcrq; | |
032c5e82 TF |
2353 | ring->rx_mini_pending = 0; |
2354 | ring->rx_jumbo_pending = 0; | |
2355 | } | |
2356 | ||
c26eba03 JA |
2357 | static int ibmvnic_set_ringparam(struct net_device *netdev, |
2358 | struct ethtool_ringparam *ring) | |
2359 | { | |
2360 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
723ad916 | 2361 | int ret; |
c26eba03 | 2362 | |
723ad916 | 2363 | ret = 0; |
c26eba03 JA |
2364 | adapter->desired.rx_entries = ring->rx_pending; |
2365 | adapter->desired.tx_entries = ring->tx_pending; | |
2366 | ||
723ad916 TF |
2367 | ret = wait_for_reset(adapter); |
2368 | ||
2369 | if (!ret && | |
2370 | (adapter->req_rx_add_entries_per_subcrq != ring->rx_pending || | |
2371 | adapter->req_tx_entries_per_subcrq != ring->tx_pending)) | |
2372 | netdev_info(netdev, | |
2373 | "Could not match full ringsize request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n", | |
2374 | ring->rx_pending, ring->tx_pending, | |
2375 | adapter->req_rx_add_entries_per_subcrq, | |
2376 | adapter->req_tx_entries_per_subcrq); | |
2377 | return ret; | |
c26eba03 JA |
2378 | } |
2379 | ||
c2dbeb67 JA |
2380 | static void ibmvnic_get_channels(struct net_device *netdev, |
2381 | struct ethtool_channels *channels) | |
2382 | { | |
2383 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2384 | ||
723ad916 TF |
2385 | if (adapter->priv_flags & IBMVNIC_USE_SERVER_MAXES) { |
2386 | channels->max_rx = adapter->max_rx_queues; | |
2387 | channels->max_tx = adapter->max_tx_queues; | |
2388 | } else { | |
2389 | channels->max_rx = IBMVNIC_MAX_QUEUES; | |
2390 | channels->max_tx = IBMVNIC_MAX_QUEUES; | |
2391 | } | |
2392 | ||
c2dbeb67 JA |
2393 | channels->max_other = 0; |
2394 | channels->max_combined = 0; | |
2395 | channels->rx_count = adapter->req_rx_queues; | |
2396 | channels->tx_count = adapter->req_tx_queues; | |
2397 | channels->other_count = 0; | |
2398 | channels->combined_count = 0; | |
2399 | } | |
2400 | ||
c26eba03 JA |
2401 | static int ibmvnic_set_channels(struct net_device *netdev, |
2402 | struct ethtool_channels *channels) | |
2403 | { | |
2404 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
723ad916 | 2405 | int ret; |
c26eba03 | 2406 | |
723ad916 | 2407 | ret = 0; |
c26eba03 JA |
2408 | adapter->desired.rx_queues = channels->rx_count; |
2409 | adapter->desired.tx_queues = channels->tx_count; | |
2410 | ||
723ad916 TF |
2411 | ret = wait_for_reset(adapter); |
2412 | ||
2413 | if (!ret && | |
2414 | (adapter->req_rx_queues != channels->rx_count || | |
2415 | adapter->req_tx_queues != channels->tx_count)) | |
2416 | netdev_info(netdev, | |
2417 | "Could not match full channels request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n", | |
2418 | channels->rx_count, channels->tx_count, | |
2419 | adapter->req_rx_queues, adapter->req_tx_queues); | |
2420 | return ret; | |
2421 | ||
c26eba03 JA |
2422 | } |
2423 | ||
032c5e82 TF |
2424 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
2425 | { | |
3d52b594 | 2426 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
032c5e82 TF |
2427 | int i; |
2428 | ||
723ad916 TF |
2429 | switch (stringset) { |
2430 | case ETH_SS_STATS: | |
2431 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); | |
2432 | i++, data += ETH_GSTRING_LEN) | |
2433 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); | |
032c5e82 | 2434 | |
723ad916 TF |
2435 | for (i = 0; i < adapter->req_tx_queues; i++) { |
2436 | snprintf(data, ETH_GSTRING_LEN, "tx%d_packets", i); | |
2437 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2438 | |
723ad916 TF |
2439 | snprintf(data, ETH_GSTRING_LEN, "tx%d_bytes", i); |
2440 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2441 | |
723ad916 TF |
2442 | snprintf(data, ETH_GSTRING_LEN, |
2443 | "tx%d_dropped_packets", i); | |
2444 | data += ETH_GSTRING_LEN; | |
2445 | } | |
3d52b594 | 2446 | |
723ad916 TF |
2447 | for (i = 0; i < adapter->req_rx_queues; i++) { |
2448 | snprintf(data, ETH_GSTRING_LEN, "rx%d_packets", i); | |
2449 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2450 | |
723ad916 TF |
2451 | snprintf(data, ETH_GSTRING_LEN, "rx%d_bytes", i); |
2452 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2453 | |
723ad916 TF |
2454 | snprintf(data, ETH_GSTRING_LEN, "rx%d_interrupts", i); |
2455 | data += ETH_GSTRING_LEN; | |
2456 | } | |
2457 | break; | |
3d52b594 | 2458 | |
723ad916 TF |
2459 | case ETH_SS_PRIV_FLAGS: |
2460 | for (i = 0; i < ARRAY_SIZE(ibmvnic_priv_flags); i++) | |
2461 | strcpy(data + i * ETH_GSTRING_LEN, | |
2462 | ibmvnic_priv_flags[i]); | |
2463 | break; | |
2464 | default: | |
2465 | return; | |
3d52b594 | 2466 | } |
032c5e82 TF |
2467 | } |
2468 | ||
2469 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) | |
2470 | { | |
3d52b594 JA |
2471 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
2472 | ||
032c5e82 TF |
2473 | switch (sset) { |
2474 | case ETH_SS_STATS: | |
3d52b594 JA |
2475 | return ARRAY_SIZE(ibmvnic_stats) + |
2476 | adapter->req_tx_queues * NUM_TX_STATS + | |
2477 | adapter->req_rx_queues * NUM_RX_STATS; | |
723ad916 TF |
2478 | case ETH_SS_PRIV_FLAGS: |
2479 | return ARRAY_SIZE(ibmvnic_priv_flags); | |
032c5e82 TF |
2480 | default: |
2481 | return -EOPNOTSUPP; | |
2482 | } | |
2483 | } | |
2484 | ||
2485 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, | |
2486 | struct ethtool_stats *stats, u64 *data) | |
2487 | { | |
2488 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
2489 | union ibmvnic_crq crq; | |
3d52b594 | 2490 | int i, j; |
9c4eaabd | 2491 | int rc; |
032c5e82 TF |
2492 | |
2493 | memset(&crq, 0, sizeof(crq)); | |
2494 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; | |
2495 | crq.request_statistics.cmd = REQUEST_STATISTICS; | |
2496 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); | |
2497 | crq.request_statistics.len = | |
2498 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); | |
032c5e82 TF |
2499 | |
2500 | /* Wait for data to be written */ | |
2501 | init_completion(&adapter->stats_done); | |
9c4eaabd TF |
2502 | rc = ibmvnic_send_crq(adapter, &crq); |
2503 | if (rc) | |
2504 | return; | |
032c5e82 TF |
2505 | wait_for_completion(&adapter->stats_done); |
2506 | ||
2507 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) | |
52da5c11 JA |
2508 | data[i] = be64_to_cpu(IBMVNIC_GET_STAT(adapter, |
2509 | ibmvnic_stats[i].offset)); | |
3d52b594 JA |
2510 | |
2511 | for (j = 0; j < adapter->req_tx_queues; j++) { | |
2512 | data[i] = adapter->tx_stats_buffers[j].packets; | |
2513 | i++; | |
2514 | data[i] = adapter->tx_stats_buffers[j].bytes; | |
2515 | i++; | |
2516 | data[i] = adapter->tx_stats_buffers[j].dropped_packets; | |
2517 | i++; | |
2518 | } | |
2519 | ||
2520 | for (j = 0; j < adapter->req_rx_queues; j++) { | |
2521 | data[i] = adapter->rx_stats_buffers[j].packets; | |
2522 | i++; | |
2523 | data[i] = adapter->rx_stats_buffers[j].bytes; | |
2524 | i++; | |
2525 | data[i] = adapter->rx_stats_buffers[j].interrupts; | |
2526 | i++; | |
2527 | } | |
032c5e82 TF |
2528 | } |
2529 | ||
723ad916 TF |
2530 | static u32 ibmvnic_get_priv_flags(struct net_device *netdev) |
2531 | { | |
2532 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2533 | ||
2534 | return adapter->priv_flags; | |
2535 | } | |
2536 | ||
2537 | static int ibmvnic_set_priv_flags(struct net_device *netdev, u32 flags) | |
2538 | { | |
2539 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2540 | bool which_maxes = !!(flags & IBMVNIC_USE_SERVER_MAXES); | |
2541 | ||
2542 | if (which_maxes) | |
2543 | adapter->priv_flags |= IBMVNIC_USE_SERVER_MAXES; | |
2544 | else | |
2545 | adapter->priv_flags &= ~IBMVNIC_USE_SERVER_MAXES; | |
2546 | ||
2547 | return 0; | |
2548 | } | |
032c5e82 | 2549 | static const struct ethtool_ops ibmvnic_ethtool_ops = { |
032c5e82 TF |
2550 | .get_drvinfo = ibmvnic_get_drvinfo, |
2551 | .get_msglevel = ibmvnic_get_msglevel, | |
2552 | .set_msglevel = ibmvnic_set_msglevel, | |
2553 | .get_link = ibmvnic_get_link, | |
2554 | .get_ringparam = ibmvnic_get_ringparam, | |
c26eba03 | 2555 | .set_ringparam = ibmvnic_set_ringparam, |
c2dbeb67 | 2556 | .get_channels = ibmvnic_get_channels, |
c26eba03 | 2557 | .set_channels = ibmvnic_set_channels, |
032c5e82 TF |
2558 | .get_strings = ibmvnic_get_strings, |
2559 | .get_sset_count = ibmvnic_get_sset_count, | |
2560 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, | |
8a43379f | 2561 | .get_link_ksettings = ibmvnic_get_link_ksettings, |
723ad916 TF |
2562 | .get_priv_flags = ibmvnic_get_priv_flags, |
2563 | .set_priv_flags = ibmvnic_set_priv_flags, | |
032c5e82 TF |
2564 | }; |
2565 | ||
2566 | /* Routines for managing CRQs/sCRQs */ | |
2567 | ||
57a49436 NF |
2568 | static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter, |
2569 | struct ibmvnic_sub_crq_queue *scrq) | |
2570 | { | |
2571 | int rc; | |
2572 | ||
2573 | if (scrq->irq) { | |
2574 | free_irq(scrq->irq, scrq); | |
2575 | irq_dispose_mapping(scrq->irq); | |
2576 | scrq->irq = 0; | |
2577 | } | |
2578 | ||
c8b2ad0a | 2579 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); |
41f71467 | 2580 | atomic_set(&scrq->used, 0); |
57a49436 NF |
2581 | scrq->cur = 0; |
2582 | ||
2583 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
2584 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
2585 | return rc; | |
2586 | } | |
2587 | ||
2588 | static int reset_sub_crq_queues(struct ibmvnic_adapter *adapter) | |
2589 | { | |
2590 | int i, rc; | |
2591 | ||
2592 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
d1cf33d9 | 2593 | netdev_dbg(adapter->netdev, "Re-setting tx_scrq[%d]\n", i); |
57a49436 NF |
2594 | rc = reset_one_sub_crq_queue(adapter, adapter->tx_scrq[i]); |
2595 | if (rc) | |
2596 | return rc; | |
2597 | } | |
2598 | ||
2599 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
d1cf33d9 | 2600 | netdev_dbg(adapter->netdev, "Re-setting rx_scrq[%d]\n", i); |
57a49436 NF |
2601 | rc = reset_one_sub_crq_queue(adapter, adapter->rx_scrq[i]); |
2602 | if (rc) | |
2603 | return rc; | |
2604 | } | |
2605 | ||
57a49436 NF |
2606 | return rc; |
2607 | } | |
2608 | ||
032c5e82 | 2609 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, |
d7c0ef36 NF |
2610 | struct ibmvnic_sub_crq_queue *scrq, |
2611 | bool do_h_free) | |
032c5e82 TF |
2612 | { |
2613 | struct device *dev = &adapter->vdev->dev; | |
2614 | long rc; | |
2615 | ||
2616 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); | |
2617 | ||
d7c0ef36 NF |
2618 | if (do_h_free) { |
2619 | /* Close the sub-crqs */ | |
2620 | do { | |
2621 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, | |
2622 | adapter->vdev->unit_address, | |
2623 | scrq->crq_num); | |
2624 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
032c5e82 | 2625 | |
d7c0ef36 NF |
2626 | if (rc) { |
2627 | netdev_err(adapter->netdev, | |
2628 | "Failed to release sub-CRQ %16lx, rc = %ld\n", | |
2629 | scrq->crq_num, rc); | |
2630 | } | |
ffa73855 TF |
2631 | } |
2632 | ||
032c5e82 TF |
2633 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, |
2634 | DMA_BIDIRECTIONAL); | |
2635 | free_pages((unsigned long)scrq->msgs, 2); | |
2636 | kfree(scrq); | |
2637 | } | |
2638 | ||
2639 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter | |
2640 | *adapter) | |
2641 | { | |
2642 | struct device *dev = &adapter->vdev->dev; | |
2643 | struct ibmvnic_sub_crq_queue *scrq; | |
2644 | int rc; | |
2645 | ||
1bb3c739 | 2646 | scrq = kzalloc(sizeof(*scrq), GFP_KERNEL); |
032c5e82 TF |
2647 | if (!scrq) |
2648 | return NULL; | |
2649 | ||
7f7adc50 | 2650 | scrq->msgs = |
1bb3c739 | 2651 | (union sub_crq *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 2); |
032c5e82 TF |
2652 | if (!scrq->msgs) { |
2653 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); | |
2654 | goto zero_page_failed; | |
2655 | } | |
2656 | ||
2657 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, | |
2658 | DMA_BIDIRECTIONAL); | |
2659 | if (dma_mapping_error(dev, scrq->msg_token)) { | |
2660 | dev_warn(dev, "Couldn't map crq queue messages page\n"); | |
2661 | goto map_failed; | |
2662 | } | |
2663 | ||
2664 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
2665 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
2666 | ||
2667 | if (rc == H_RESOURCE) | |
2668 | rc = ibmvnic_reset_crq(adapter); | |
2669 | ||
2670 | if (rc == H_CLOSED) { | |
2671 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); | |
2672 | } else if (rc) { | |
2673 | dev_warn(dev, "Error %d registering sub-crq\n", rc); | |
2674 | goto reg_failed; | |
2675 | } | |
2676 | ||
032c5e82 TF |
2677 | scrq->adapter = adapter; |
2678 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); | |
032c5e82 TF |
2679 | spin_lock_init(&scrq->lock); |
2680 | ||
2681 | netdev_dbg(adapter->netdev, | |
2682 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", | |
2683 | scrq->crq_num, scrq->hw_irq, scrq->irq); | |
2684 | ||
2685 | return scrq; | |
2686 | ||
032c5e82 TF |
2687 | reg_failed: |
2688 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
2689 | DMA_BIDIRECTIONAL); | |
2690 | map_failed: | |
2691 | free_pages((unsigned long)scrq->msgs, 2); | |
2692 | zero_page_failed: | |
2693 | kfree(scrq); | |
2694 | ||
2695 | return NULL; | |
2696 | } | |
2697 | ||
d7c0ef36 | 2698 | static void release_sub_crqs(struct ibmvnic_adapter *adapter, bool do_h_free) |
032c5e82 TF |
2699 | { |
2700 | int i; | |
2701 | ||
2702 | if (adapter->tx_scrq) { | |
82e3be32 | 2703 | for (i = 0; i < adapter->num_active_tx_scrqs; i++) { |
b510888f NF |
2704 | if (!adapter->tx_scrq[i]) |
2705 | continue; | |
2706 | ||
d1cf33d9 NF |
2707 | netdev_dbg(adapter->netdev, "Releasing tx_scrq[%d]\n", |
2708 | i); | |
b510888f | 2709 | if (adapter->tx_scrq[i]->irq) { |
032c5e82 TF |
2710 | free_irq(adapter->tx_scrq[i]->irq, |
2711 | adapter->tx_scrq[i]); | |
88eb98a0 | 2712 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
b510888f | 2713 | adapter->tx_scrq[i]->irq = 0; |
032c5e82 | 2714 | } |
b510888f | 2715 | |
d7c0ef36 NF |
2716 | release_sub_crq_queue(adapter, adapter->tx_scrq[i], |
2717 | do_h_free); | |
b510888f NF |
2718 | } |
2719 | ||
9501df3c | 2720 | kfree(adapter->tx_scrq); |
032c5e82 | 2721 | adapter->tx_scrq = NULL; |
82e3be32 | 2722 | adapter->num_active_tx_scrqs = 0; |
032c5e82 TF |
2723 | } |
2724 | ||
2725 | if (adapter->rx_scrq) { | |
82e3be32 | 2726 | for (i = 0; i < adapter->num_active_rx_scrqs; i++) { |
b510888f NF |
2727 | if (!adapter->rx_scrq[i]) |
2728 | continue; | |
2729 | ||
d1cf33d9 NF |
2730 | netdev_dbg(adapter->netdev, "Releasing rx_scrq[%d]\n", |
2731 | i); | |
b510888f | 2732 | if (adapter->rx_scrq[i]->irq) { |
032c5e82 TF |
2733 | free_irq(adapter->rx_scrq[i]->irq, |
2734 | adapter->rx_scrq[i]); | |
88eb98a0 | 2735 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
b510888f | 2736 | adapter->rx_scrq[i]->irq = 0; |
032c5e82 | 2737 | } |
032c5e82 | 2738 | |
d7c0ef36 NF |
2739 | release_sub_crq_queue(adapter, adapter->rx_scrq[i], |
2740 | do_h_free); | |
b510888f | 2741 | } |
ea22d51a | 2742 | |
b510888f | 2743 | kfree(adapter->rx_scrq); |
ea22d51a | 2744 | adapter->rx_scrq = NULL; |
82e3be32 | 2745 | adapter->num_active_rx_scrqs = 0; |
ea22d51a | 2746 | } |
ea22d51a TF |
2747 | } |
2748 | ||
032c5e82 TF |
2749 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
2750 | struct ibmvnic_sub_crq_queue *scrq) | |
2751 | { | |
2752 | struct device *dev = &adapter->vdev->dev; | |
2753 | unsigned long rc; | |
2754 | ||
2755 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
2756 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
2757 | if (rc) | |
2758 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", | |
2759 | scrq->hw_irq, rc); | |
2760 | return rc; | |
2761 | } | |
2762 | ||
2763 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, | |
2764 | struct ibmvnic_sub_crq_queue *scrq) | |
2765 | { | |
2766 | struct device *dev = &adapter->vdev->dev; | |
2767 | unsigned long rc; | |
2768 | ||
2769 | if (scrq->hw_irq > 0x100000000ULL) { | |
2770 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); | |
2771 | return 1; | |
2772 | } | |
2773 | ||
73f9d364 NF |
2774 | if (adapter->resetting && |
2775 | adapter->reset_reason == VNIC_RESET_MOBILITY) { | |
2776 | u64 val = (0xff000000) | scrq->hw_irq; | |
2777 | ||
2778 | rc = plpar_hcall_norets(H_EOI, val); | |
2779 | if (rc) | |
2780 | dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n", | |
2781 | val, rc); | |
2782 | } | |
f23e0643 | 2783 | |
032c5e82 TF |
2784 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, |
2785 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
2786 | if (rc) | |
2787 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", | |
2788 | scrq->hw_irq, rc); | |
2789 | return rc; | |
2790 | } | |
2791 | ||
2792 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, | |
2793 | struct ibmvnic_sub_crq_queue *scrq) | |
2794 | { | |
2795 | struct device *dev = &adapter->vdev->dev; | |
06b3e357 | 2796 | struct ibmvnic_tx_pool *tx_pool; |
032c5e82 TF |
2797 | struct ibmvnic_tx_buff *txbuff; |
2798 | union sub_crq *next; | |
2799 | int index; | |
2800 | int i, j; | |
37e40fa8 | 2801 | u8 *first; |
032c5e82 TF |
2802 | |
2803 | restart_loop: | |
2804 | while (pending_scrq(adapter, scrq)) { | |
2805 | unsigned int pool = scrq->pool_index; | |
ffc385b9 | 2806 | int num_entries = 0; |
032c5e82 TF |
2807 | |
2808 | next = ibmvnic_next_scrq(adapter, scrq); | |
2809 | for (i = 0; i < next->tx_comp.num_comps; i++) { | |
2810 | if (next->tx_comp.rcs[i]) { | |
2811 | dev_err(dev, "tx error %x\n", | |
2812 | next->tx_comp.rcs[i]); | |
2813 | continue; | |
2814 | } | |
2815 | index = be32_to_cpu(next->tx_comp.correlators[i]); | |
06b3e357 TF |
2816 | if (index & IBMVNIC_TSO_POOL_MASK) { |
2817 | tx_pool = &adapter->tso_pool[pool]; | |
2818 | index &= ~IBMVNIC_TSO_POOL_MASK; | |
2819 | } else { | |
2820 | tx_pool = &adapter->tx_pool[pool]; | |
2821 | } | |
2822 | ||
2823 | txbuff = &tx_pool->tx_buff[index]; | |
032c5e82 TF |
2824 | |
2825 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { | |
2826 | if (!txbuff->data_dma[j]) | |
2827 | continue; | |
2828 | ||
2829 | txbuff->data_dma[j] = 0; | |
032c5e82 | 2830 | } |
ad7775dc | 2831 | /* if sub_crq was sent indirectly */ |
37e40fa8 TF |
2832 | first = &txbuff->indir_arr[0].generic.first; |
2833 | if (*first == IBMVNIC_CRQ_CMD) { | |
ad7775dc TF |
2834 | dma_unmap_single(dev, txbuff->indir_dma, |
2835 | sizeof(txbuff->indir_arr), | |
2836 | DMA_TO_DEVICE); | |
37e40fa8 | 2837 | *first = 0; |
ad7775dc | 2838 | } |
032c5e82 | 2839 | |
142c0ac4 | 2840 | if (txbuff->last_frag) { |
032c5e82 | 2841 | dev_kfree_skb_any(txbuff->skb); |
7c3e7de3 | 2842 | txbuff->skb = NULL; |
142c0ac4 | 2843 | } |
032c5e82 | 2844 | |
ffc385b9 TF |
2845 | num_entries += txbuff->num_entries; |
2846 | ||
06b3e357 TF |
2847 | tx_pool->free_map[tx_pool->producer_index] = index; |
2848 | tx_pool->producer_index = | |
2849 | (tx_pool->producer_index + 1) % | |
2850 | tx_pool->num_buffers; | |
032c5e82 TF |
2851 | } |
2852 | /* remove tx_comp scrq*/ | |
2853 | next->tx_comp.first = 0; | |
7c3e7de3 | 2854 | |
ffc385b9 | 2855 | if (atomic_sub_return(num_entries, &scrq->used) <= |
7c3e7de3 NF |
2856 | (adapter->req_tx_entries_per_subcrq / 2) && |
2857 | __netif_subqueue_stopped(adapter->netdev, | |
2858 | scrq->pool_index)) { | |
2859 | netif_wake_subqueue(adapter->netdev, scrq->pool_index); | |
0aecb13c TF |
2860 | netdev_dbg(adapter->netdev, "Started queue %d\n", |
2861 | scrq->pool_index); | |
7c3e7de3 | 2862 | } |
032c5e82 TF |
2863 | } |
2864 | ||
2865 | enable_scrq_irq(adapter, scrq); | |
2866 | ||
2867 | if (pending_scrq(adapter, scrq)) { | |
2868 | disable_scrq_irq(adapter, scrq); | |
2869 | goto restart_loop; | |
2870 | } | |
2871 | ||
2872 | return 0; | |
2873 | } | |
2874 | ||
2875 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) | |
2876 | { | |
2877 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
2878 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
2879 | ||
2880 | disable_scrq_irq(adapter, scrq); | |
2881 | ibmvnic_complete_tx(adapter, scrq); | |
2882 | ||
2883 | return IRQ_HANDLED; | |
2884 | } | |
2885 | ||
2886 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) | |
2887 | { | |
2888 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
2889 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
2890 | ||
09fb35ea NF |
2891 | /* When booting a kdump kernel we can hit pending interrupts |
2892 | * prior to completing driver initialization. | |
2893 | */ | |
2894 | if (unlikely(adapter->state != VNIC_OPEN)) | |
2895 | return IRQ_NONE; | |
2896 | ||
3d52b594 JA |
2897 | adapter->rx_stats_buffers[scrq->scrq_num].interrupts++; |
2898 | ||
032c5e82 TF |
2899 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { |
2900 | disable_scrq_irq(adapter, scrq); | |
2901 | __napi_schedule(&adapter->napi[scrq->scrq_num]); | |
2902 | } | |
2903 | ||
2904 | return IRQ_HANDLED; | |
2905 | } | |
2906 | ||
ea22d51a TF |
2907 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
2908 | { | |
2909 | struct device *dev = &adapter->vdev->dev; | |
2910 | struct ibmvnic_sub_crq_queue *scrq; | |
2911 | int i = 0, j = 0; | |
2912 | int rc = 0; | |
2913 | ||
2914 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
d1cf33d9 NF |
2915 | netdev_dbg(adapter->netdev, "Initializing tx_scrq[%d] irq\n", |
2916 | i); | |
ea22d51a TF |
2917 | scrq = adapter->tx_scrq[i]; |
2918 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
2919 | ||
99c1790e | 2920 | if (!scrq->irq) { |
ea22d51a TF |
2921 | rc = -EINVAL; |
2922 | dev_err(dev, "Error mapping irq\n"); | |
2923 | goto req_tx_irq_failed; | |
2924 | } | |
2925 | ||
2926 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, | |
2927 | 0, "ibmvnic_tx", scrq); | |
2928 | ||
2929 | if (rc) { | |
2930 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", | |
2931 | scrq->irq, rc); | |
2932 | irq_dispose_mapping(scrq->irq); | |
af9090c2 | 2933 | goto req_tx_irq_failed; |
ea22d51a TF |
2934 | } |
2935 | } | |
2936 | ||
2937 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
d1cf33d9 NF |
2938 | netdev_dbg(adapter->netdev, "Initializing rx_scrq[%d] irq\n", |
2939 | i); | |
ea22d51a TF |
2940 | scrq = adapter->rx_scrq[i]; |
2941 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
99c1790e | 2942 | if (!scrq->irq) { |
ea22d51a TF |
2943 | rc = -EINVAL; |
2944 | dev_err(dev, "Error mapping irq\n"); | |
2945 | goto req_rx_irq_failed; | |
2946 | } | |
2947 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, | |
2948 | 0, "ibmvnic_rx", scrq); | |
2949 | if (rc) { | |
2950 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", | |
2951 | scrq->irq, rc); | |
2952 | irq_dispose_mapping(scrq->irq); | |
2953 | goto req_rx_irq_failed; | |
2954 | } | |
2955 | } | |
2956 | return rc; | |
2957 | ||
2958 | req_rx_irq_failed: | |
8bf371e6 | 2959 | for (j = 0; j < i; j++) { |
ea22d51a TF |
2960 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); |
2961 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 2962 | } |
ea22d51a TF |
2963 | i = adapter->req_tx_queues; |
2964 | req_tx_irq_failed: | |
8bf371e6 | 2965 | for (j = 0; j < i; j++) { |
ea22d51a TF |
2966 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); |
2967 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 2968 | } |
d7c0ef36 | 2969 | release_sub_crqs(adapter, 1); |
ea22d51a TF |
2970 | return rc; |
2971 | } | |
2972 | ||
d346b9bc | 2973 | static int init_sub_crqs(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
2974 | { |
2975 | struct device *dev = &adapter->vdev->dev; | |
2976 | struct ibmvnic_sub_crq_queue **allqueues; | |
2977 | int registered_queues = 0; | |
032c5e82 TF |
2978 | int total_queues; |
2979 | int more = 0; | |
ea22d51a | 2980 | int i; |
032c5e82 | 2981 | |
032c5e82 TF |
2982 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; |
2983 | ||
1bb3c739 | 2984 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_KERNEL); |
032c5e82 | 2985 | if (!allqueues) |
d346b9bc | 2986 | return -1; |
032c5e82 TF |
2987 | |
2988 | for (i = 0; i < total_queues; i++) { | |
2989 | allqueues[i] = init_sub_crq_queue(adapter); | |
2990 | if (!allqueues[i]) { | |
2991 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); | |
2992 | break; | |
2993 | } | |
2994 | registered_queues++; | |
2995 | } | |
2996 | ||
2997 | /* Make sure we were able to register the minimum number of queues */ | |
2998 | if (registered_queues < | |
2999 | adapter->min_tx_queues + adapter->min_rx_queues) { | |
3000 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); | |
3001 | goto tx_failed; | |
3002 | } | |
3003 | ||
3004 | /* Distribute the failed allocated queues*/ | |
3005 | for (i = 0; i < total_queues - registered_queues + more ; i++) { | |
3006 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); | |
3007 | switch (i % 3) { | |
3008 | case 0: | |
3009 | if (adapter->req_rx_queues > adapter->min_rx_queues) | |
3010 | adapter->req_rx_queues--; | |
3011 | else | |
3012 | more++; | |
3013 | break; | |
3014 | case 1: | |
3015 | if (adapter->req_tx_queues > adapter->min_tx_queues) | |
3016 | adapter->req_tx_queues--; | |
3017 | else | |
3018 | more++; | |
3019 | break; | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, | |
1bb3c739 | 3024 | sizeof(*adapter->tx_scrq), GFP_KERNEL); |
032c5e82 TF |
3025 | if (!adapter->tx_scrq) |
3026 | goto tx_failed; | |
3027 | ||
3028 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
3029 | adapter->tx_scrq[i] = allqueues[i]; | |
3030 | adapter->tx_scrq[i]->pool_index = i; | |
82e3be32 | 3031 | adapter->num_active_tx_scrqs++; |
032c5e82 TF |
3032 | } |
3033 | ||
3034 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, | |
1bb3c739 | 3035 | sizeof(*adapter->rx_scrq), GFP_KERNEL); |
032c5e82 TF |
3036 | if (!adapter->rx_scrq) |
3037 | goto rx_failed; | |
3038 | ||
3039 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
3040 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; | |
3041 | adapter->rx_scrq[i]->scrq_num = i; | |
82e3be32 | 3042 | adapter->num_active_rx_scrqs++; |
032c5e82 TF |
3043 | } |
3044 | ||
d346b9bc NF |
3045 | kfree(allqueues); |
3046 | return 0; | |
3047 | ||
3048 | rx_failed: | |
3049 | kfree(adapter->tx_scrq); | |
3050 | adapter->tx_scrq = NULL; | |
3051 | tx_failed: | |
3052 | for (i = 0; i < registered_queues; i++) | |
d7c0ef36 | 3053 | release_sub_crq_queue(adapter, allqueues[i], 1); |
d346b9bc NF |
3054 | kfree(allqueues); |
3055 | return -1; | |
3056 | } | |
3057 | ||
3058 | static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry) | |
3059 | { | |
3060 | struct device *dev = &adapter->vdev->dev; | |
3061 | union ibmvnic_crq crq; | |
c26eba03 | 3062 | int max_entries; |
d346b9bc NF |
3063 | |
3064 | if (!retry) { | |
3065 | /* Sub-CRQ entries are 32 byte long */ | |
3066 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); | |
3067 | ||
3068 | if (adapter->min_tx_entries_per_subcrq > entries_page || | |
3069 | adapter->min_rx_add_entries_per_subcrq > entries_page) { | |
3070 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); | |
3071 | return; | |
3072 | } | |
3073 | ||
c26eba03 JA |
3074 | if (adapter->desired.mtu) |
3075 | adapter->req_mtu = adapter->desired.mtu; | |
3076 | else | |
3077 | adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; | |
3078 | ||
3079 | if (!adapter->desired.tx_entries) | |
3080 | adapter->desired.tx_entries = | |
3081 | adapter->max_tx_entries_per_subcrq; | |
3082 | if (!adapter->desired.rx_entries) | |
3083 | adapter->desired.rx_entries = | |
3084 | adapter->max_rx_add_entries_per_subcrq; | |
3085 | ||
3086 | max_entries = IBMVNIC_MAX_LTB_SIZE / | |
3087 | (adapter->req_mtu + IBMVNIC_BUFFER_HLEN); | |
3088 | ||
3089 | if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) * | |
3090 | adapter->desired.tx_entries > IBMVNIC_MAX_LTB_SIZE) { | |
3091 | adapter->desired.tx_entries = max_entries; | |
3092 | } | |
d346b9bc | 3093 | |
c26eba03 JA |
3094 | if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) * |
3095 | adapter->desired.rx_entries > IBMVNIC_MAX_LTB_SIZE) { | |
3096 | adapter->desired.rx_entries = max_entries; | |
3097 | } | |
3098 | ||
3099 | if (adapter->desired.tx_entries) | |
3100 | adapter->req_tx_entries_per_subcrq = | |
3101 | adapter->desired.tx_entries; | |
3102 | else | |
3103 | adapter->req_tx_entries_per_subcrq = | |
3104 | adapter->max_tx_entries_per_subcrq; | |
3105 | ||
3106 | if (adapter->desired.rx_entries) | |
3107 | adapter->req_rx_add_entries_per_subcrq = | |
3108 | adapter->desired.rx_entries; | |
3109 | else | |
3110 | adapter->req_rx_add_entries_per_subcrq = | |
3111 | adapter->max_rx_add_entries_per_subcrq; | |
3112 | ||
3113 | if (adapter->desired.tx_queues) | |
3114 | adapter->req_tx_queues = | |
3115 | adapter->desired.tx_queues; | |
3116 | else | |
3117 | adapter->req_tx_queues = | |
3118 | adapter->opt_tx_comp_sub_queues; | |
3119 | ||
3120 | if (adapter->desired.rx_queues) | |
3121 | adapter->req_rx_queues = | |
3122 | adapter->desired.rx_queues; | |
3123 | else | |
3124 | adapter->req_rx_queues = | |
3125 | adapter->opt_rx_comp_queues; | |
3126 | ||
3127 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; | |
d346b9bc NF |
3128 | } |
3129 | ||
032c5e82 TF |
3130 | memset(&crq, 0, sizeof(crq)); |
3131 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
3132 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
3133 | ||
3134 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); | |
de89e854 | 3135 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
901e040a | 3136 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3137 | ibmvnic_send_crq(adapter, &crq); |
3138 | ||
3139 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); | |
de89e854 | 3140 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
901e040a | 3141 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3142 | ibmvnic_send_crq(adapter, &crq); |
3143 | ||
3144 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); | |
de89e854 | 3145 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
901e040a | 3146 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3147 | ibmvnic_send_crq(adapter, &crq); |
3148 | ||
3149 | crq.request_capability.capability = | |
3150 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); | |
3151 | crq.request_capability.number = | |
de89e854 | 3152 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
901e040a | 3153 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3154 | ibmvnic_send_crq(adapter, &crq); |
3155 | ||
3156 | crq.request_capability.capability = | |
3157 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); | |
3158 | crq.request_capability.number = | |
de89e854 | 3159 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
901e040a | 3160 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3161 | ibmvnic_send_crq(adapter, &crq); |
3162 | ||
3163 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); | |
de89e854 | 3164 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
901e040a | 3165 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3166 | ibmvnic_send_crq(adapter, &crq); |
3167 | ||
3168 | if (adapter->netdev->flags & IFF_PROMISC) { | |
3169 | if (adapter->promisc_supported) { | |
3170 | crq.request_capability.capability = | |
3171 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 3172 | crq.request_capability.number = cpu_to_be64(1); |
901e040a | 3173 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3174 | ibmvnic_send_crq(adapter, &crq); |
3175 | } | |
3176 | } else { | |
3177 | crq.request_capability.capability = | |
3178 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 3179 | crq.request_capability.number = cpu_to_be64(0); |
901e040a | 3180 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3181 | ibmvnic_send_crq(adapter, &crq); |
3182 | } | |
032c5e82 TF |
3183 | } |
3184 | ||
3185 | static int pending_scrq(struct ibmvnic_adapter *adapter, | |
3186 | struct ibmvnic_sub_crq_queue *scrq) | |
3187 | { | |
3188 | union sub_crq *entry = &scrq->msgs[scrq->cur]; | |
3189 | ||
1cf9cc72 | 3190 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) |
032c5e82 TF |
3191 | return 1; |
3192 | else | |
3193 | return 0; | |
3194 | } | |
3195 | ||
3196 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, | |
3197 | struct ibmvnic_sub_crq_queue *scrq) | |
3198 | { | |
3199 | union sub_crq *entry; | |
3200 | unsigned long flags; | |
3201 | ||
3202 | spin_lock_irqsave(&scrq->lock, flags); | |
3203 | entry = &scrq->msgs[scrq->cur]; | |
3204 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
3205 | if (++scrq->cur == scrq->size) | |
3206 | scrq->cur = 0; | |
3207 | } else { | |
3208 | entry = NULL; | |
3209 | } | |
3210 | spin_unlock_irqrestore(&scrq->lock, flags); | |
3211 | ||
3212 | return entry; | |
3213 | } | |
3214 | ||
3215 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) | |
3216 | { | |
3217 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
3218 | union ibmvnic_crq *crq; | |
3219 | ||
3220 | crq = &queue->msgs[queue->cur]; | |
3221 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
3222 | if (++queue->cur == queue->size) | |
3223 | queue->cur = 0; | |
3224 | } else { | |
3225 | crq = NULL; | |
3226 | } | |
3227 | ||
3228 | return crq; | |
3229 | } | |
3230 | ||
2d14d379 TF |
3231 | static void print_subcrq_error(struct device *dev, int rc, const char *func) |
3232 | { | |
3233 | switch (rc) { | |
3234 | case H_PARAMETER: | |
3235 | dev_warn_ratelimited(dev, | |
3236 | "%s failed: Send request is malformed or adapter failover pending. (rc=%d)\n", | |
3237 | func, rc); | |
3238 | break; | |
3239 | case H_CLOSED: | |
3240 | dev_warn_ratelimited(dev, | |
3241 | "%s failed: Backing queue closed. Adapter is down or failover pending. (rc=%d)\n", | |
3242 | func, rc); | |
3243 | break; | |
3244 | default: | |
3245 | dev_err_ratelimited(dev, "%s failed: (rc=%d)\n", func, rc); | |
3246 | break; | |
3247 | } | |
3248 | } | |
3249 | ||
032c5e82 TF |
3250 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, |
3251 | union sub_crq *sub_crq) | |
3252 | { | |
3253 | unsigned int ua = adapter->vdev->unit_address; | |
3254 | struct device *dev = &adapter->vdev->dev; | |
3255 | u64 *u64_crq = (u64 *)sub_crq; | |
3256 | int rc; | |
3257 | ||
3258 | netdev_dbg(adapter->netdev, | |
3259 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", | |
3260 | (unsigned long int)cpu_to_be64(remote_handle), | |
3261 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
3262 | (unsigned long int)cpu_to_be64(u64_crq[1]), | |
3263 | (unsigned long int)cpu_to_be64(u64_crq[2]), | |
3264 | (unsigned long int)cpu_to_be64(u64_crq[3])); | |
3265 | ||
3266 | /* Make sure the hypervisor sees the complete request */ | |
3267 | mb(); | |
3268 | ||
3269 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, | |
3270 | cpu_to_be64(remote_handle), | |
3271 | cpu_to_be64(u64_crq[0]), | |
3272 | cpu_to_be64(u64_crq[1]), | |
3273 | cpu_to_be64(u64_crq[2]), | |
3274 | cpu_to_be64(u64_crq[3])); | |
3275 | ||
2d14d379 TF |
3276 | if (rc) |
3277 | print_subcrq_error(dev, rc, __func__); | |
032c5e82 TF |
3278 | |
3279 | return rc; | |
3280 | } | |
3281 | ||
ad7775dc TF |
3282 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
3283 | u64 remote_handle, u64 ioba, u64 num_entries) | |
3284 | { | |
3285 | unsigned int ua = adapter->vdev->unit_address; | |
3286 | struct device *dev = &adapter->vdev->dev; | |
3287 | int rc; | |
3288 | ||
3289 | /* Make sure the hypervisor sees the complete request */ | |
3290 | mb(); | |
3291 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, | |
3292 | cpu_to_be64(remote_handle), | |
3293 | ioba, num_entries); | |
3294 | ||
2d14d379 TF |
3295 | if (rc) |
3296 | print_subcrq_error(dev, rc, __func__); | |
ad7775dc TF |
3297 | |
3298 | return rc; | |
3299 | } | |
3300 | ||
032c5e82 TF |
3301 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
3302 | union ibmvnic_crq *crq) | |
3303 | { | |
3304 | unsigned int ua = adapter->vdev->unit_address; | |
3305 | struct device *dev = &adapter->vdev->dev; | |
3306 | u64 *u64_crq = (u64 *)crq; | |
3307 | int rc; | |
3308 | ||
3309 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", | |
3310 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
3311 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
3312 | ||
5153698e TF |
3313 | if (!adapter->crq.active && |
3314 | crq->generic.first != IBMVNIC_CRQ_INIT_CMD) { | |
3315 | dev_warn(dev, "Invalid request detected while CRQ is inactive, possible device state change during reset\n"); | |
3316 | return -EINVAL; | |
3317 | } | |
3318 | ||
032c5e82 TF |
3319 | /* Make sure the hypervisor sees the complete request */ |
3320 | mb(); | |
3321 | ||
3322 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, | |
3323 | cpu_to_be64(u64_crq[0]), | |
3324 | cpu_to_be64(u64_crq[1])); | |
3325 | ||
3326 | if (rc) { | |
ec95dffa | 3327 | if (rc == H_CLOSED) { |
032c5e82 | 3328 | dev_warn(dev, "CRQ Queue closed\n"); |
ec95dffa NF |
3329 | if (adapter->resetting) |
3330 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); | |
3331 | } | |
3332 | ||
032c5e82 TF |
3333 | dev_warn(dev, "Send error (rc=%d)\n", rc); |
3334 | } | |
3335 | ||
3336 | return rc; | |
3337 | } | |
3338 | ||
3339 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) | |
3340 | { | |
3341 | union ibmvnic_crq crq; | |
3342 | ||
3343 | memset(&crq, 0, sizeof(crq)); | |
3344 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
3345 | crq.generic.cmd = IBMVNIC_CRQ_INIT; | |
3346 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); | |
3347 | ||
3348 | return ibmvnic_send_crq(adapter, &crq); | |
3349 | } | |
3350 | ||
032c5e82 TF |
3351 | static int send_version_xchg(struct ibmvnic_adapter *adapter) |
3352 | { | |
3353 | union ibmvnic_crq crq; | |
3354 | ||
3355 | memset(&crq, 0, sizeof(crq)); | |
3356 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; | |
3357 | crq.version_exchange.cmd = VERSION_EXCHANGE; | |
3358 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); | |
3359 | ||
3360 | return ibmvnic_send_crq(adapter, &crq); | |
3361 | } | |
3362 | ||
37798d02 NF |
3363 | struct vnic_login_client_data { |
3364 | u8 type; | |
3365 | __be16 len; | |
08ea556e | 3366 | char name[]; |
37798d02 NF |
3367 | } __packed; |
3368 | ||
3369 | static int vnic_client_data_len(struct ibmvnic_adapter *adapter) | |
3370 | { | |
3371 | int len; | |
3372 | ||
3373 | /* Calculate the amount of buffer space needed for the | |
3374 | * vnic client data in the login buffer. There are four entries, | |
3375 | * OS name, LPAR name, device name, and a null last entry. | |
3376 | */ | |
3377 | len = 4 * sizeof(struct vnic_login_client_data); | |
3378 | len += 6; /* "Linux" plus NULL */ | |
3379 | len += strlen(utsname()->nodename) + 1; | |
3380 | len += strlen(adapter->netdev->name) + 1; | |
3381 | ||
3382 | return len; | |
3383 | } | |
3384 | ||
3385 | static void vnic_add_client_data(struct ibmvnic_adapter *adapter, | |
3386 | struct vnic_login_client_data *vlcd) | |
3387 | { | |
3388 | const char *os_name = "Linux"; | |
3389 | int len; | |
3390 | ||
3391 | /* Type 1 - LPAR OS */ | |
3392 | vlcd->type = 1; | |
3393 | len = strlen(os_name) + 1; | |
3394 | vlcd->len = cpu_to_be16(len); | |
08ea556e KC |
3395 | strncpy(vlcd->name, os_name, len); |
3396 | vlcd = (struct vnic_login_client_data *)(vlcd->name + len); | |
37798d02 NF |
3397 | |
3398 | /* Type 2 - LPAR name */ | |
3399 | vlcd->type = 2; | |
3400 | len = strlen(utsname()->nodename) + 1; | |
3401 | vlcd->len = cpu_to_be16(len); | |
08ea556e KC |
3402 | strncpy(vlcd->name, utsname()->nodename, len); |
3403 | vlcd = (struct vnic_login_client_data *)(vlcd->name + len); | |
37798d02 NF |
3404 | |
3405 | /* Type 3 - device name */ | |
3406 | vlcd->type = 3; | |
3407 | len = strlen(adapter->netdev->name) + 1; | |
3408 | vlcd->len = cpu_to_be16(len); | |
08ea556e | 3409 | strncpy(vlcd->name, adapter->netdev->name, len); |
37798d02 NF |
3410 | } |
3411 | ||
20a8ab74 | 3412 | static int send_login(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3413 | { |
3414 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; | |
3415 | struct ibmvnic_login_buffer *login_buffer; | |
032c5e82 TF |
3416 | struct device *dev = &adapter->vdev->dev; |
3417 | dma_addr_t rsp_buffer_token; | |
3418 | dma_addr_t buffer_token; | |
3419 | size_t rsp_buffer_size; | |
3420 | union ibmvnic_crq crq; | |
032c5e82 TF |
3421 | size_t buffer_size; |
3422 | __be64 *tx_list_p; | |
3423 | __be64 *rx_list_p; | |
37798d02 NF |
3424 | int client_data_len; |
3425 | struct vnic_login_client_data *vlcd; | |
032c5e82 TF |
3426 | int i; |
3427 | ||
20a8ab74 TF |
3428 | if (!adapter->tx_scrq || !adapter->rx_scrq) { |
3429 | netdev_err(adapter->netdev, | |
3430 | "RX or TX queues are not allocated, device login failed\n"); | |
3431 | return -1; | |
3432 | } | |
3433 | ||
34f0f4e3 | 3434 | release_login_rsp_buffer(adapter); |
37798d02 NF |
3435 | client_data_len = vnic_client_data_len(adapter); |
3436 | ||
032c5e82 TF |
3437 | buffer_size = |
3438 | sizeof(struct ibmvnic_login_buffer) + | |
37798d02 NF |
3439 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues) + |
3440 | client_data_len; | |
032c5e82 | 3441 | |
37798d02 | 3442 | login_buffer = kzalloc(buffer_size, GFP_ATOMIC); |
032c5e82 TF |
3443 | if (!login_buffer) |
3444 | goto buf_alloc_failed; | |
3445 | ||
3446 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, | |
3447 | DMA_TO_DEVICE); | |
3448 | if (dma_mapping_error(dev, buffer_token)) { | |
3449 | dev_err(dev, "Couldn't map login buffer\n"); | |
3450 | goto buf_map_failed; | |
3451 | } | |
3452 | ||
498cd8e4 JA |
3453 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
3454 | sizeof(u64) * adapter->req_tx_queues + | |
3455 | sizeof(u64) * adapter->req_rx_queues + | |
3456 | sizeof(u64) * adapter->req_rx_queues + | |
3457 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; | |
032c5e82 TF |
3458 | |
3459 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); | |
3460 | if (!login_rsp_buffer) | |
3461 | goto buf_rsp_alloc_failed; | |
3462 | ||
3463 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, | |
3464 | rsp_buffer_size, DMA_FROM_DEVICE); | |
3465 | if (dma_mapping_error(dev, rsp_buffer_token)) { | |
3466 | dev_err(dev, "Couldn't map login rsp buffer\n"); | |
3467 | goto buf_rsp_map_failed; | |
3468 | } | |
661a2622 | 3469 | |
032c5e82 TF |
3470 | adapter->login_buf = login_buffer; |
3471 | adapter->login_buf_token = buffer_token; | |
3472 | adapter->login_buf_sz = buffer_size; | |
3473 | adapter->login_rsp_buf = login_rsp_buffer; | |
3474 | adapter->login_rsp_buf_token = rsp_buffer_token; | |
3475 | adapter->login_rsp_buf_sz = rsp_buffer_size; | |
3476 | ||
3477 | login_buffer->len = cpu_to_be32(buffer_size); | |
3478 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); | |
3479 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); | |
3480 | login_buffer->off_txcomp_subcrqs = | |
3481 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); | |
3482 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); | |
3483 | login_buffer->off_rxcomp_subcrqs = | |
3484 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + | |
3485 | sizeof(u64) * adapter->req_tx_queues); | |
3486 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); | |
3487 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); | |
3488 | ||
3489 | tx_list_p = (__be64 *)((char *)login_buffer + | |
3490 | sizeof(struct ibmvnic_login_buffer)); | |
3491 | rx_list_p = (__be64 *)((char *)login_buffer + | |
3492 | sizeof(struct ibmvnic_login_buffer) + | |
3493 | sizeof(u64) * adapter->req_tx_queues); | |
3494 | ||
3495 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
3496 | if (adapter->tx_scrq[i]) { | |
3497 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> | |
3498 | crq_num); | |
3499 | } | |
3500 | } | |
3501 | ||
3502 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
3503 | if (adapter->rx_scrq[i]) { | |
3504 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> | |
3505 | crq_num); | |
3506 | } | |
3507 | } | |
3508 | ||
37798d02 NF |
3509 | /* Insert vNIC login client data */ |
3510 | vlcd = (struct vnic_login_client_data *) | |
3511 | ((char *)rx_list_p + (sizeof(u64) * adapter->req_rx_queues)); | |
3512 | login_buffer->client_data_offset = | |
3513 | cpu_to_be32((char *)vlcd - (char *)login_buffer); | |
3514 | login_buffer->client_data_len = cpu_to_be32(client_data_len); | |
3515 | ||
3516 | vnic_add_client_data(adapter, vlcd); | |
3517 | ||
032c5e82 TF |
3518 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); |
3519 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { | |
3520 | netdev_dbg(adapter->netdev, "%016lx\n", | |
3521 | ((unsigned long int *)(adapter->login_buf))[i]); | |
3522 | } | |
3523 | ||
3524 | memset(&crq, 0, sizeof(crq)); | |
3525 | crq.login.first = IBMVNIC_CRQ_CMD; | |
3526 | crq.login.cmd = LOGIN; | |
3527 | crq.login.ioba = cpu_to_be32(buffer_token); | |
3528 | crq.login.len = cpu_to_be32(buffer_size); | |
032c5e82 TF |
3529 | ibmvnic_send_crq(adapter, &crq); |
3530 | ||
20a8ab74 | 3531 | return 0; |
032c5e82 | 3532 | |
032c5e82 TF |
3533 | buf_rsp_map_failed: |
3534 | kfree(login_rsp_buffer); | |
3535 | buf_rsp_alloc_failed: | |
3536 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); | |
3537 | buf_map_failed: | |
3538 | kfree(login_buffer); | |
3539 | buf_alloc_failed: | |
20a8ab74 | 3540 | return -1; |
032c5e82 TF |
3541 | } |
3542 | ||
9c4eaabd TF |
3543 | static int send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, |
3544 | u32 len, u8 map_id) | |
032c5e82 TF |
3545 | { |
3546 | union ibmvnic_crq crq; | |
3547 | ||
3548 | memset(&crq, 0, sizeof(crq)); | |
3549 | crq.request_map.first = IBMVNIC_CRQ_CMD; | |
3550 | crq.request_map.cmd = REQUEST_MAP; | |
3551 | crq.request_map.map_id = map_id; | |
3552 | crq.request_map.ioba = cpu_to_be32(addr); | |
3553 | crq.request_map.len = cpu_to_be32(len); | |
9c4eaabd | 3554 | return ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
3555 | } |
3556 | ||
9c4eaabd | 3557 | static int send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) |
032c5e82 TF |
3558 | { |
3559 | union ibmvnic_crq crq; | |
3560 | ||
3561 | memset(&crq, 0, sizeof(crq)); | |
3562 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; | |
3563 | crq.request_unmap.cmd = REQUEST_UNMAP; | |
3564 | crq.request_unmap.map_id = map_id; | |
9c4eaabd | 3565 | return ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
3566 | } |
3567 | ||
3568 | static void send_map_query(struct ibmvnic_adapter *adapter) | |
3569 | { | |
3570 | union ibmvnic_crq crq; | |
3571 | ||
3572 | memset(&crq, 0, sizeof(crq)); | |
3573 | crq.query_map.first = IBMVNIC_CRQ_CMD; | |
3574 | crq.query_map.cmd = QUERY_MAP; | |
3575 | ibmvnic_send_crq(adapter, &crq); | |
3576 | } | |
3577 | ||
3578 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ | |
3579 | static void send_cap_queries(struct ibmvnic_adapter *adapter) | |
3580 | { | |
3581 | union ibmvnic_crq crq; | |
3582 | ||
901e040a | 3583 | atomic_set(&adapter->running_cap_crqs, 0); |
032c5e82 TF |
3584 | memset(&crq, 0, sizeof(crq)); |
3585 | crq.query_capability.first = IBMVNIC_CRQ_CMD; | |
3586 | crq.query_capability.cmd = QUERY_CAPABILITY; | |
3587 | ||
3588 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); | |
901e040a | 3589 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3590 | ibmvnic_send_crq(adapter, &crq); |
3591 | ||
3592 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); | |
901e040a | 3593 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3594 | ibmvnic_send_crq(adapter, &crq); |
3595 | ||
3596 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); | |
901e040a | 3597 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3598 | ibmvnic_send_crq(adapter, &crq); |
3599 | ||
3600 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); | |
901e040a | 3601 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3602 | ibmvnic_send_crq(adapter, &crq); |
3603 | ||
3604 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); | |
901e040a | 3605 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3606 | ibmvnic_send_crq(adapter, &crq); |
3607 | ||
3608 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); | |
901e040a | 3609 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3610 | ibmvnic_send_crq(adapter, &crq); |
3611 | ||
3612 | crq.query_capability.capability = | |
3613 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 3614 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3615 | ibmvnic_send_crq(adapter, &crq); |
3616 | ||
3617 | crq.query_capability.capability = | |
3618 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 3619 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3620 | ibmvnic_send_crq(adapter, &crq); |
3621 | ||
3622 | crq.query_capability.capability = | |
3623 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 3624 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3625 | ibmvnic_send_crq(adapter, &crq); |
3626 | ||
3627 | crq.query_capability.capability = | |
3628 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 3629 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3630 | ibmvnic_send_crq(adapter, &crq); |
3631 | ||
3632 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); | |
901e040a | 3633 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3634 | ibmvnic_send_crq(adapter, &crq); |
3635 | ||
3636 | crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); | |
901e040a | 3637 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3638 | ibmvnic_send_crq(adapter, &crq); |
3639 | ||
3640 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); | |
901e040a | 3641 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3642 | ibmvnic_send_crq(adapter, &crq); |
3643 | ||
3644 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); | |
901e040a | 3645 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3646 | ibmvnic_send_crq(adapter, &crq); |
3647 | ||
3648 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); | |
901e040a | 3649 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3650 | ibmvnic_send_crq(adapter, &crq); |
3651 | ||
3652 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); | |
901e040a | 3653 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3654 | ibmvnic_send_crq(adapter, &crq); |
3655 | ||
6052d5e2 MFV |
3656 | crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION); |
3657 | atomic_inc(&adapter->running_cap_crqs); | |
3658 | ibmvnic_send_crq(adapter, &crq); | |
3659 | ||
032c5e82 | 3660 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); |
901e040a | 3661 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3662 | ibmvnic_send_crq(adapter, &crq); |
3663 | ||
3664 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); | |
901e040a | 3665 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3666 | ibmvnic_send_crq(adapter, &crq); |
3667 | ||
3668 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); | |
901e040a | 3669 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3670 | ibmvnic_send_crq(adapter, &crq); |
3671 | ||
3672 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); | |
901e040a | 3673 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3674 | ibmvnic_send_crq(adapter, &crq); |
3675 | ||
3676 | crq.query_capability.capability = | |
3677 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); | |
901e040a | 3678 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3679 | ibmvnic_send_crq(adapter, &crq); |
3680 | ||
3681 | crq.query_capability.capability = | |
3682 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 3683 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3684 | ibmvnic_send_crq(adapter, &crq); |
3685 | ||
3686 | crq.query_capability.capability = | |
3687 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); | |
901e040a | 3688 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3689 | ibmvnic_send_crq(adapter, &crq); |
3690 | ||
3691 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); | |
901e040a | 3692 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3693 | ibmvnic_send_crq(adapter, &crq); |
3694 | } | |
3695 | ||
4e6759be DANR |
3696 | static void handle_vpd_size_rsp(union ibmvnic_crq *crq, |
3697 | struct ibmvnic_adapter *adapter) | |
3698 | { | |
3699 | struct device *dev = &adapter->vdev->dev; | |
3700 | ||
3701 | if (crq->get_vpd_size_rsp.rc.code) { | |
3702 | dev_err(dev, "Error retrieving VPD size, rc=%x\n", | |
3703 | crq->get_vpd_size_rsp.rc.code); | |
3704 | complete(&adapter->fw_done); | |
3705 | return; | |
3706 | } | |
3707 | ||
3708 | adapter->vpd->len = be64_to_cpu(crq->get_vpd_size_rsp.len); | |
3709 | complete(&adapter->fw_done); | |
3710 | } | |
3711 | ||
3712 | static void handle_vpd_rsp(union ibmvnic_crq *crq, | |
3713 | struct ibmvnic_adapter *adapter) | |
3714 | { | |
3715 | struct device *dev = &adapter->vdev->dev; | |
21a2545b | 3716 | unsigned char *substr = NULL; |
4e6759be DANR |
3717 | u8 fw_level_len = 0; |
3718 | ||
3719 | memset(adapter->fw_version, 0, 32); | |
3720 | ||
3721 | dma_unmap_single(dev, adapter->vpd->dma_addr, adapter->vpd->len, | |
3722 | DMA_FROM_DEVICE); | |
3723 | ||
3724 | if (crq->get_vpd_rsp.rc.code) { | |
3725 | dev_err(dev, "Error retrieving VPD from device, rc=%x\n", | |
3726 | crq->get_vpd_rsp.rc.code); | |
3727 | goto complete; | |
3728 | } | |
3729 | ||
3730 | /* get the position of the firmware version info | |
3731 | * located after the ASCII 'RM' substring in the buffer | |
3732 | */ | |
3733 | substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len); | |
3734 | if (!substr) { | |
a107311d | 3735 | dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n"); |
4e6759be DANR |
3736 | goto complete; |
3737 | } | |
3738 | ||
3739 | /* get length of firmware level ASCII substring */ | |
3740 | if ((substr + 2) < (adapter->vpd->buff + adapter->vpd->len)) { | |
3741 | fw_level_len = *(substr + 2); | |
3742 | } else { | |
3743 | dev_info(dev, "Length of FW substr extrapolated VDP buff\n"); | |
3744 | goto complete; | |
3745 | } | |
3746 | ||
3747 | /* copy firmware version string from vpd into adapter */ | |
3748 | if ((substr + 3 + fw_level_len) < | |
3749 | (adapter->vpd->buff + adapter->vpd->len)) { | |
21a2545b | 3750 | strncpy((char *)adapter->fw_version, substr + 3, fw_level_len); |
4e6759be DANR |
3751 | } else { |
3752 | dev_info(dev, "FW substr extrapolated VPD buff\n"); | |
3753 | } | |
3754 | ||
3755 | complete: | |
21a2545b DANR |
3756 | if (adapter->fw_version[0] == '\0') |
3757 | strncpy((char *)adapter->fw_version, "N/A", 3 * sizeof(char)); | |
4e6759be DANR |
3758 | complete(&adapter->fw_done); |
3759 | } | |
3760 | ||
032c5e82 TF |
3761 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) |
3762 | { | |
3763 | struct device *dev = &adapter->vdev->dev; | |
3764 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; | |
dde746a3 | 3765 | netdev_features_t old_hw_features = 0; |
032c5e82 TF |
3766 | union ibmvnic_crq crq; |
3767 | int i; | |
3768 | ||
3769 | dma_unmap_single(dev, adapter->ip_offload_tok, | |
3770 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); | |
3771 | ||
3772 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); | |
3773 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) | |
3774 | netdev_dbg(adapter->netdev, "%016lx\n", | |
3775 | ((unsigned long int *)(buf))[i]); | |
3776 | ||
3777 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); | |
3778 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); | |
3779 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", | |
3780 | buf->tcp_ipv4_chksum); | |
3781 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", | |
3782 | buf->tcp_ipv6_chksum); | |
3783 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", | |
3784 | buf->udp_ipv4_chksum); | |
3785 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", | |
3786 | buf->udp_ipv6_chksum); | |
3787 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", | |
3788 | buf->large_tx_ipv4); | |
3789 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", | |
3790 | buf->large_tx_ipv6); | |
3791 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", | |
3792 | buf->large_rx_ipv4); | |
3793 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", | |
3794 | buf->large_rx_ipv6); | |
3795 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", | |
3796 | buf->max_ipv4_header_size); | |
3797 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", | |
3798 | buf->max_ipv6_header_size); | |
3799 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", | |
3800 | buf->max_tcp_header_size); | |
3801 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", | |
3802 | buf->max_udp_header_size); | |
3803 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", | |
3804 | buf->max_large_tx_size); | |
3805 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", | |
3806 | buf->max_large_rx_size); | |
3807 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", | |
3808 | buf->ipv6_extension_header); | |
3809 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", | |
3810 | buf->tcp_pseudosum_req); | |
3811 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", | |
3812 | buf->num_ipv6_ext_headers); | |
3813 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", | |
3814 | buf->off_ipv6_ext_headers); | |
3815 | ||
3816 | adapter->ip_offload_ctrl_tok = | |
3817 | dma_map_single(dev, &adapter->ip_offload_ctrl, | |
3818 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); | |
3819 | ||
3820 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { | |
3821 | dev_err(dev, "Couldn't map ip offload control buffer\n"); | |
3822 | return; | |
3823 | } | |
3824 | ||
f6897943 TF |
3825 | adapter->ip_offload_ctrl.len = |
3826 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
032c5e82 | 3827 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); |
f6897943 TF |
3828 | adapter->ip_offload_ctrl.ipv4_chksum = buf->ipv4_chksum; |
3829 | adapter->ip_offload_ctrl.ipv6_chksum = buf->ipv6_chksum; | |
032c5e82 TF |
3830 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; |
3831 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; | |
3832 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; | |
3833 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; | |
fdb06105 TF |
3834 | adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4; |
3835 | adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6; | |
032c5e82 | 3836 | |
fdb06105 | 3837 | /* large_rx disabled for now, additional features needed */ |
032c5e82 TF |
3838 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; |
3839 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; | |
3840 | ||
dde746a3 TF |
3841 | if (adapter->state != VNIC_PROBING) { |
3842 | old_hw_features = adapter->netdev->hw_features; | |
3843 | adapter->netdev->hw_features = 0; | |
3844 | } | |
3845 | ||
b66b7bd2 | 3846 | adapter->netdev->hw_features = NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; |
032c5e82 TF |
3847 | |
3848 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) | |
dde746a3 | 3849 | adapter->netdev->hw_features |= NETIF_F_IP_CSUM; |
032c5e82 TF |
3850 | |
3851 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) | |
dde746a3 | 3852 | adapter->netdev->hw_features |= NETIF_F_IPV6_CSUM; |
032c5e82 | 3853 | |
9be02cdf TF |
3854 | if ((adapter->netdev->features & |
3855 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) | |
dde746a3 | 3856 | adapter->netdev->hw_features |= NETIF_F_RXCSUM; |
9be02cdf | 3857 | |
fdb06105 | 3858 | if (buf->large_tx_ipv4) |
dde746a3 | 3859 | adapter->netdev->hw_features |= NETIF_F_TSO; |
fdb06105 | 3860 | if (buf->large_tx_ipv6) |
dde746a3 | 3861 | adapter->netdev->hw_features |= NETIF_F_TSO6; |
fdb06105 | 3862 | |
dde746a3 TF |
3863 | if (adapter->state == VNIC_PROBING) { |
3864 | adapter->netdev->features |= adapter->netdev->hw_features; | |
3865 | } else if (old_hw_features != adapter->netdev->hw_features) { | |
3866 | netdev_features_t tmp = 0; | |
3867 | ||
3868 | /* disable features no longer supported */ | |
3869 | adapter->netdev->features &= adapter->netdev->hw_features; | |
3870 | /* turn on features now supported if previously enabled */ | |
3871 | tmp = (old_hw_features ^ adapter->netdev->hw_features) & | |
3872 | adapter->netdev->hw_features; | |
3873 | adapter->netdev->features |= | |
3874 | tmp & adapter->netdev->wanted_features; | |
3875 | } | |
aa0bf851 | 3876 | |
032c5e82 TF |
3877 | memset(&crq, 0, sizeof(crq)); |
3878 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; | |
3879 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; | |
3880 | crq.control_ip_offload.len = | |
3881 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
3882 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); | |
3883 | ibmvnic_send_crq(adapter, &crq); | |
3884 | } | |
3885 | ||
c9008d33 TF |
3886 | static const char *ibmvnic_fw_err_cause(u16 cause) |
3887 | { | |
3888 | switch (cause) { | |
3889 | case ADAPTER_PROBLEM: | |
3890 | return "adapter problem"; | |
3891 | case BUS_PROBLEM: | |
3892 | return "bus problem"; | |
3893 | case FW_PROBLEM: | |
3894 | return "firmware problem"; | |
3895 | case DD_PROBLEM: | |
3896 | return "device driver problem"; | |
3897 | case EEH_RECOVERY: | |
3898 | return "EEH recovery"; | |
3899 | case FW_UPDATED: | |
3900 | return "firmware updated"; | |
3901 | case LOW_MEMORY: | |
3902 | return "low Memory"; | |
3903 | default: | |
3904 | return "unknown"; | |
3905 | } | |
3906 | } | |
3907 | ||
2f9de9ba NF |
3908 | static void handle_error_indication(union ibmvnic_crq *crq, |
3909 | struct ibmvnic_adapter *adapter) | |
3910 | { | |
3911 | struct device *dev = &adapter->vdev->dev; | |
c9008d33 TF |
3912 | u16 cause; |
3913 | ||
3914 | cause = be16_to_cpu(crq->error_indication.error_cause); | |
2f9de9ba | 3915 | |
c9008d33 TF |
3916 | dev_warn_ratelimited(dev, |
3917 | "Firmware reports %serror, cause: %s. Starting recovery...\n", | |
3918 | crq->error_indication.flags | |
3919 | & IBMVNIC_FATAL_ERROR ? "FATAL " : "", | |
3920 | ibmvnic_fw_err_cause(cause)); | |
2f9de9ba | 3921 | |
ed651a10 NF |
3922 | if (crq->error_indication.flags & IBMVNIC_FATAL_ERROR) |
3923 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); | |
8cb31cfc JA |
3924 | else |
3925 | ibmvnic_reset(adapter, VNIC_RESET_NON_FATAL); | |
032c5e82 TF |
3926 | } |
3927 | ||
f813614f TF |
3928 | static int handle_change_mac_rsp(union ibmvnic_crq *crq, |
3929 | struct ibmvnic_adapter *adapter) | |
032c5e82 TF |
3930 | { |
3931 | struct net_device *netdev = adapter->netdev; | |
3932 | struct device *dev = &adapter->vdev->dev; | |
3933 | long rc; | |
3934 | ||
3935 | rc = crq->change_mac_addr_rsp.rc.code; | |
3936 | if (rc) { | |
3937 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); | |
f813614f | 3938 | goto out; |
032c5e82 TF |
3939 | } |
3940 | memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], | |
3941 | ETH_ALEN); | |
f813614f TF |
3942 | out: |
3943 | complete(&adapter->fw_done); | |
3944 | return rc; | |
032c5e82 TF |
3945 | } |
3946 | ||
3947 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, | |
3948 | struct ibmvnic_adapter *adapter) | |
3949 | { | |
3950 | struct device *dev = &adapter->vdev->dev; | |
3951 | u64 *req_value; | |
3952 | char *name; | |
3953 | ||
901e040a | 3954 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 TF |
3955 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { |
3956 | case REQ_TX_QUEUES: | |
3957 | req_value = &adapter->req_tx_queues; | |
3958 | name = "tx"; | |
3959 | break; | |
3960 | case REQ_RX_QUEUES: | |
3961 | req_value = &adapter->req_rx_queues; | |
3962 | name = "rx"; | |
3963 | break; | |
3964 | case REQ_RX_ADD_QUEUES: | |
3965 | req_value = &adapter->req_rx_add_queues; | |
3966 | name = "rx_add"; | |
3967 | break; | |
3968 | case REQ_TX_ENTRIES_PER_SUBCRQ: | |
3969 | req_value = &adapter->req_tx_entries_per_subcrq; | |
3970 | name = "tx_entries_per_subcrq"; | |
3971 | break; | |
3972 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: | |
3973 | req_value = &adapter->req_rx_add_entries_per_subcrq; | |
3974 | name = "rx_add_entries_per_subcrq"; | |
3975 | break; | |
3976 | case REQ_MTU: | |
3977 | req_value = &adapter->req_mtu; | |
3978 | name = "mtu"; | |
3979 | break; | |
3980 | case PROMISC_REQUESTED: | |
3981 | req_value = &adapter->promisc; | |
3982 | name = "promisc"; | |
3983 | break; | |
3984 | default: | |
3985 | dev_err(dev, "Got invalid cap request rsp %d\n", | |
3986 | crq->request_capability.capability); | |
3987 | return; | |
3988 | } | |
3989 | ||
3990 | switch (crq->request_capability_rsp.rc.code) { | |
3991 | case SUCCESS: | |
3992 | break; | |
3993 | case PARTIALSUCCESS: | |
3994 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", | |
3995 | *req_value, | |
28f4d165 | 3996 | (long int)be64_to_cpu(crq->request_capability_rsp. |
032c5e82 | 3997 | number), name); |
e7913803 JA |
3998 | |
3999 | if (be16_to_cpu(crq->request_capability_rsp.capability) == | |
4000 | REQ_MTU) { | |
4001 | pr_err("mtu of %llu is not supported. Reverting.\n", | |
4002 | *req_value); | |
4003 | *req_value = adapter->fallback.mtu; | |
4004 | } else { | |
4005 | *req_value = | |
4006 | be64_to_cpu(crq->request_capability_rsp.number); | |
4007 | } | |
4008 | ||
d346b9bc | 4009 | ibmvnic_send_req_caps(adapter, 1); |
032c5e82 TF |
4010 | return; |
4011 | default: | |
4012 | dev_err(dev, "Error %d in request cap rsp\n", | |
4013 | crq->request_capability_rsp.rc.code); | |
4014 | return; | |
4015 | } | |
4016 | ||
4017 | /* Done receiving requested capabilities, query IP offload support */ | |
901e040a | 4018 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
032c5e82 TF |
4019 | union ibmvnic_crq newcrq; |
4020 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); | |
4021 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = | |
4022 | &adapter->ip_offload_buf; | |
4023 | ||
249168ad | 4024 | adapter->wait_capability = false; |
032c5e82 TF |
4025 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, |
4026 | buf_sz, | |
4027 | DMA_FROM_DEVICE); | |
4028 | ||
4029 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { | |
4030 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
4031 | dev_err(dev, "Couldn't map offload buffer\n"); | |
4032 | return; | |
4033 | } | |
4034 | ||
4035 | memset(&newcrq, 0, sizeof(newcrq)); | |
4036 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; | |
4037 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; | |
4038 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); | |
4039 | newcrq.query_ip_offload.ioba = | |
4040 | cpu_to_be32(adapter->ip_offload_tok); | |
4041 | ||
4042 | ibmvnic_send_crq(adapter, &newcrq); | |
4043 | } | |
4044 | } | |
4045 | ||
4046 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, | |
4047 | struct ibmvnic_adapter *adapter) | |
4048 | { | |
4049 | struct device *dev = &adapter->vdev->dev; | |
c26eba03 | 4050 | struct net_device *netdev = adapter->netdev; |
032c5e82 TF |
4051 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; |
4052 | struct ibmvnic_login_buffer *login = adapter->login_buf; | |
032c5e82 TF |
4053 | int i; |
4054 | ||
4055 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, | |
37e40fa8 | 4056 | DMA_TO_DEVICE); |
032c5e82 | 4057 | dma_unmap_single(dev, adapter->login_rsp_buf_token, |
37e40fa8 | 4058 | adapter->login_rsp_buf_sz, DMA_FROM_DEVICE); |
032c5e82 | 4059 | |
498cd8e4 JA |
4060 | /* If the number of queues requested can't be allocated by the |
4061 | * server, the login response will return with code 1. We will need | |
4062 | * to resend the login buffer with fewer queues requested. | |
4063 | */ | |
4064 | if (login_rsp_crq->generic.rc.code) { | |
64d92aa2 | 4065 | adapter->init_done_rc = login_rsp_crq->generic.rc.code; |
498cd8e4 JA |
4066 | complete(&adapter->init_done); |
4067 | return 0; | |
4068 | } | |
4069 | ||
c26eba03 JA |
4070 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
4071 | ||
032c5e82 TF |
4072 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
4073 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { | |
4074 | netdev_dbg(adapter->netdev, "%016lx\n", | |
4075 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); | |
4076 | } | |
4077 | ||
4078 | /* Sanity checks */ | |
4079 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || | |
4080 | (be32_to_cpu(login->num_rxcomp_subcrqs) * | |
4081 | adapter->req_rx_add_queues != | |
4082 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { | |
4083 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); | |
4084 | ibmvnic_remove(adapter->vdev); | |
4085 | return -EIO; | |
4086 | } | |
a2c0f039 | 4087 | release_login_buffer(adapter); |
032c5e82 TF |
4088 | complete(&adapter->init_done); |
4089 | ||
032c5e82 TF |
4090 | return 0; |
4091 | } | |
4092 | ||
032c5e82 TF |
4093 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, |
4094 | struct ibmvnic_adapter *adapter) | |
4095 | { | |
4096 | struct device *dev = &adapter->vdev->dev; | |
4097 | long rc; | |
4098 | ||
4099 | rc = crq->request_unmap_rsp.rc.code; | |
4100 | if (rc) | |
4101 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); | |
4102 | } | |
4103 | ||
4104 | static void handle_query_map_rsp(union ibmvnic_crq *crq, | |
4105 | struct ibmvnic_adapter *adapter) | |
4106 | { | |
4107 | struct net_device *netdev = adapter->netdev; | |
4108 | struct device *dev = &adapter->vdev->dev; | |
4109 | long rc; | |
4110 | ||
4111 | rc = crq->query_map_rsp.rc.code; | |
4112 | if (rc) { | |
4113 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); | |
4114 | return; | |
4115 | } | |
4116 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", | |
4117 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, | |
4118 | crq->query_map_rsp.free_pages); | |
4119 | } | |
4120 | ||
4121 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, | |
4122 | struct ibmvnic_adapter *adapter) | |
4123 | { | |
4124 | struct net_device *netdev = adapter->netdev; | |
4125 | struct device *dev = &adapter->vdev->dev; | |
4126 | long rc; | |
4127 | ||
901e040a | 4128 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 | 4129 | netdev_dbg(netdev, "Outstanding queries: %d\n", |
901e040a | 4130 | atomic_read(&adapter->running_cap_crqs)); |
032c5e82 TF |
4131 | rc = crq->query_capability.rc.code; |
4132 | if (rc) { | |
4133 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); | |
4134 | goto out; | |
4135 | } | |
4136 | ||
4137 | switch (be16_to_cpu(crq->query_capability.capability)) { | |
4138 | case MIN_TX_QUEUES: | |
4139 | adapter->min_tx_queues = | |
de89e854 | 4140 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4141 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
4142 | adapter->min_tx_queues); | |
4143 | break; | |
4144 | case MIN_RX_QUEUES: | |
4145 | adapter->min_rx_queues = | |
de89e854 | 4146 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4147 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
4148 | adapter->min_rx_queues); | |
4149 | break; | |
4150 | case MIN_RX_ADD_QUEUES: | |
4151 | adapter->min_rx_add_queues = | |
de89e854 | 4152 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4153 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
4154 | adapter->min_rx_add_queues); | |
4155 | break; | |
4156 | case MAX_TX_QUEUES: | |
4157 | adapter->max_tx_queues = | |
de89e854 | 4158 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4159 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
4160 | adapter->max_tx_queues); | |
4161 | break; | |
4162 | case MAX_RX_QUEUES: | |
4163 | adapter->max_rx_queues = | |
de89e854 | 4164 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4165 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
4166 | adapter->max_rx_queues); | |
4167 | break; | |
4168 | case MAX_RX_ADD_QUEUES: | |
4169 | adapter->max_rx_add_queues = | |
de89e854 | 4170 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4171 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
4172 | adapter->max_rx_add_queues); | |
4173 | break; | |
4174 | case MIN_TX_ENTRIES_PER_SUBCRQ: | |
4175 | adapter->min_tx_entries_per_subcrq = | |
de89e854 | 4176 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4177 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
4178 | adapter->min_tx_entries_per_subcrq); | |
4179 | break; | |
4180 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: | |
4181 | adapter->min_rx_add_entries_per_subcrq = | |
de89e854 | 4182 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4183 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
4184 | adapter->min_rx_add_entries_per_subcrq); | |
4185 | break; | |
4186 | case MAX_TX_ENTRIES_PER_SUBCRQ: | |
4187 | adapter->max_tx_entries_per_subcrq = | |
de89e854 | 4188 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4189 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
4190 | adapter->max_tx_entries_per_subcrq); | |
4191 | break; | |
4192 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: | |
4193 | adapter->max_rx_add_entries_per_subcrq = | |
de89e854 | 4194 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4195 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
4196 | adapter->max_rx_add_entries_per_subcrq); | |
4197 | break; | |
4198 | case TCP_IP_OFFLOAD: | |
4199 | adapter->tcp_ip_offload = | |
de89e854 | 4200 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4201 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
4202 | adapter->tcp_ip_offload); | |
4203 | break; | |
4204 | case PROMISC_SUPPORTED: | |
4205 | adapter->promisc_supported = | |
de89e854 | 4206 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4207 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
4208 | adapter->promisc_supported); | |
4209 | break; | |
4210 | case MIN_MTU: | |
de89e854 | 4211 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 4212 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
032c5e82 TF |
4213 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
4214 | break; | |
4215 | case MAX_MTU: | |
de89e854 | 4216 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 4217 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; |
032c5e82 TF |
4218 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
4219 | break; | |
4220 | case MAX_MULTICAST_FILTERS: | |
4221 | adapter->max_multicast_filters = | |
de89e854 | 4222 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4223 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
4224 | adapter->max_multicast_filters); | |
4225 | break; | |
4226 | case VLAN_HEADER_INSERTION: | |
4227 | adapter->vlan_header_insertion = | |
de89e854 | 4228 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4229 | if (adapter->vlan_header_insertion) |
4230 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; | |
4231 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", | |
4232 | adapter->vlan_header_insertion); | |
4233 | break; | |
6052d5e2 MFV |
4234 | case RX_VLAN_HEADER_INSERTION: |
4235 | adapter->rx_vlan_header_insertion = | |
4236 | be64_to_cpu(crq->query_capability.number); | |
4237 | netdev_dbg(netdev, "rx_vlan_header_insertion = %lld\n", | |
4238 | adapter->rx_vlan_header_insertion); | |
4239 | break; | |
032c5e82 TF |
4240 | case MAX_TX_SG_ENTRIES: |
4241 | adapter->max_tx_sg_entries = | |
de89e854 | 4242 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4243 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
4244 | adapter->max_tx_sg_entries); | |
4245 | break; | |
4246 | case RX_SG_SUPPORTED: | |
4247 | adapter->rx_sg_supported = | |
de89e854 | 4248 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4249 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
4250 | adapter->rx_sg_supported); | |
4251 | break; | |
4252 | case OPT_TX_COMP_SUB_QUEUES: | |
4253 | adapter->opt_tx_comp_sub_queues = | |
de89e854 | 4254 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4255 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
4256 | adapter->opt_tx_comp_sub_queues); | |
4257 | break; | |
4258 | case OPT_RX_COMP_QUEUES: | |
4259 | adapter->opt_rx_comp_queues = | |
de89e854 | 4260 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4261 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
4262 | adapter->opt_rx_comp_queues); | |
4263 | break; | |
4264 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: | |
4265 | adapter->opt_rx_bufadd_q_per_rx_comp_q = | |
de89e854 | 4266 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4267 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
4268 | adapter->opt_rx_bufadd_q_per_rx_comp_q); | |
4269 | break; | |
4270 | case OPT_TX_ENTRIES_PER_SUBCRQ: | |
4271 | adapter->opt_tx_entries_per_subcrq = | |
de89e854 | 4272 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4273 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
4274 | adapter->opt_tx_entries_per_subcrq); | |
4275 | break; | |
4276 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: | |
4277 | adapter->opt_rxba_entries_per_subcrq = | |
de89e854 | 4278 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4279 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
4280 | adapter->opt_rxba_entries_per_subcrq); | |
4281 | break; | |
4282 | case TX_RX_DESC_REQ: | |
4283 | adapter->tx_rx_desc_req = crq->query_capability.number; | |
4284 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", | |
4285 | adapter->tx_rx_desc_req); | |
4286 | break; | |
4287 | ||
4288 | default: | |
4289 | netdev_err(netdev, "Got invalid cap rsp %d\n", | |
4290 | crq->query_capability.capability); | |
4291 | } | |
4292 | ||
4293 | out: | |
249168ad TF |
4294 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
4295 | adapter->wait_capability = false; | |
d346b9bc | 4296 | ibmvnic_send_req_caps(adapter, 0); |
249168ad | 4297 | } |
032c5e82 TF |
4298 | } |
4299 | ||
032c5e82 TF |
4300 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, |
4301 | struct ibmvnic_adapter *adapter) | |
4302 | { | |
4303 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; | |
4304 | struct net_device *netdev = adapter->netdev; | |
4305 | struct device *dev = &adapter->vdev->dev; | |
993a82b0 | 4306 | u64 *u64_crq = (u64 *)crq; |
032c5e82 TF |
4307 | long rc; |
4308 | ||
4309 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", | |
993a82b0 MFV |
4310 | (unsigned long int)cpu_to_be64(u64_crq[0]), |
4311 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
032c5e82 TF |
4312 | switch (gen_crq->first) { |
4313 | case IBMVNIC_CRQ_INIT_RSP: | |
4314 | switch (gen_crq->cmd) { | |
4315 | case IBMVNIC_CRQ_INIT: | |
4316 | dev_info(dev, "Partner initialized\n"); | |
017892c1 | 4317 | adapter->from_passive_init = true; |
5a18e1e0 | 4318 | adapter->failover_pending = false; |
17c87058 TF |
4319 | if (!completion_done(&adapter->init_done)) { |
4320 | complete(&adapter->init_done); | |
4321 | adapter->init_done_rc = -EIO; | |
4322 | } | |
5a18e1e0 | 4323 | ibmvnic_reset(adapter, VNIC_RESET_FAILOVER); |
032c5e82 TF |
4324 | break; |
4325 | case IBMVNIC_CRQ_INIT_COMPLETE: | |
4326 | dev_info(dev, "Partner initialization complete\n"); | |
5153698e | 4327 | adapter->crq.active = true; |
032c5e82 TF |
4328 | send_version_xchg(adapter); |
4329 | break; | |
4330 | default: | |
4331 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); | |
4332 | } | |
4333 | return; | |
4334 | case IBMVNIC_CRQ_XPORT_EVENT: | |
ed651a10 | 4335 | netif_carrier_off(netdev); |
5153698e | 4336 | adapter->crq.active = false; |
2770a798 TF |
4337 | if (adapter->resetting) |
4338 | adapter->force_reset_recovery = true; | |
032c5e82 | 4339 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { |
ed651a10 NF |
4340 | dev_info(dev, "Migrated, re-enabling adapter\n"); |
4341 | ibmvnic_reset(adapter, VNIC_RESET_MOBILITY); | |
dfad09a6 TF |
4342 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
4343 | dev_info(dev, "Backing device failover detected\n"); | |
5a18e1e0 | 4344 | adapter->failover_pending = true; |
032c5e82 TF |
4345 | } else { |
4346 | /* The adapter lost the connection */ | |
4347 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", | |
4348 | gen_crq->cmd); | |
ed651a10 | 4349 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); |
032c5e82 TF |
4350 | } |
4351 | return; | |
4352 | case IBMVNIC_CRQ_CMD_RSP: | |
4353 | break; | |
4354 | default: | |
4355 | dev_err(dev, "Got an invalid msg type 0x%02x\n", | |
4356 | gen_crq->first); | |
4357 | return; | |
4358 | } | |
4359 | ||
4360 | switch (gen_crq->cmd) { | |
4361 | case VERSION_EXCHANGE_RSP: | |
4362 | rc = crq->version_exchange_rsp.rc.code; | |
4363 | if (rc) { | |
4364 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); | |
4365 | break; | |
4366 | } | |
4367 | dev_info(dev, "Partner protocol version is %d\n", | |
4368 | crq->version_exchange_rsp.version); | |
4369 | if (be16_to_cpu(crq->version_exchange_rsp.version) < | |
4370 | ibmvnic_version) | |
4371 | ibmvnic_version = | |
4372 | be16_to_cpu(crq->version_exchange_rsp.version); | |
4373 | send_cap_queries(adapter); | |
4374 | break; | |
4375 | case QUERY_CAPABILITY_RSP: | |
4376 | handle_query_cap_rsp(crq, adapter); | |
4377 | break; | |
4378 | case QUERY_MAP_RSP: | |
4379 | handle_query_map_rsp(crq, adapter); | |
4380 | break; | |
4381 | case REQUEST_MAP_RSP: | |
f3be0cbc TF |
4382 | adapter->fw_done_rc = crq->request_map_rsp.rc.code; |
4383 | complete(&adapter->fw_done); | |
032c5e82 TF |
4384 | break; |
4385 | case REQUEST_UNMAP_RSP: | |
4386 | handle_request_unmap_rsp(crq, adapter); | |
4387 | break; | |
4388 | case REQUEST_CAPABILITY_RSP: | |
4389 | handle_request_cap_rsp(crq, adapter); | |
4390 | break; | |
4391 | case LOGIN_RSP: | |
4392 | netdev_dbg(netdev, "Got Login Response\n"); | |
4393 | handle_login_rsp(crq, adapter); | |
4394 | break; | |
4395 | case LOGICAL_LINK_STATE_RSP: | |
53da09e9 NF |
4396 | netdev_dbg(netdev, |
4397 | "Got Logical Link State Response, state: %d rc: %d\n", | |
4398 | crq->logical_link_state_rsp.link_state, | |
4399 | crq->logical_link_state_rsp.rc.code); | |
032c5e82 TF |
4400 | adapter->logical_link_state = |
4401 | crq->logical_link_state_rsp.link_state; | |
53da09e9 NF |
4402 | adapter->init_done_rc = crq->logical_link_state_rsp.rc.code; |
4403 | complete(&adapter->init_done); | |
032c5e82 TF |
4404 | break; |
4405 | case LINK_STATE_INDICATION: | |
4406 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); | |
4407 | adapter->phys_link_state = | |
4408 | crq->link_state_indication.phys_link_state; | |
4409 | adapter->logical_link_state = | |
4410 | crq->link_state_indication.logical_link_state; | |
4411 | break; | |
4412 | case CHANGE_MAC_ADDR_RSP: | |
4413 | netdev_dbg(netdev, "Got MAC address change Response\n"); | |
f813614f | 4414 | adapter->fw_done_rc = handle_change_mac_rsp(crq, adapter); |
032c5e82 TF |
4415 | break; |
4416 | case ERROR_INDICATION: | |
4417 | netdev_dbg(netdev, "Got Error Indication\n"); | |
4418 | handle_error_indication(crq, adapter); | |
4419 | break; | |
032c5e82 TF |
4420 | case REQUEST_STATISTICS_RSP: |
4421 | netdev_dbg(netdev, "Got Statistics Response\n"); | |
4422 | complete(&adapter->stats_done); | |
4423 | break; | |
032c5e82 TF |
4424 | case QUERY_IP_OFFLOAD_RSP: |
4425 | netdev_dbg(netdev, "Got Query IP offload Response\n"); | |
4426 | handle_query_ip_offload_rsp(adapter); | |
4427 | break; | |
4428 | case MULTICAST_CTRL_RSP: | |
4429 | netdev_dbg(netdev, "Got multicast control Response\n"); | |
4430 | break; | |
4431 | case CONTROL_IP_OFFLOAD_RSP: | |
4432 | netdev_dbg(netdev, "Got Control IP offload Response\n"); | |
4433 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, | |
4434 | sizeof(adapter->ip_offload_ctrl), | |
4435 | DMA_TO_DEVICE); | |
bd0b6723 | 4436 | complete(&adapter->init_done); |
032c5e82 | 4437 | break; |
032c5e82 TF |
4438 | case COLLECT_FW_TRACE_RSP: |
4439 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); | |
4440 | complete(&adapter->fw_done); | |
4441 | break; | |
4e6759be DANR |
4442 | case GET_VPD_SIZE_RSP: |
4443 | handle_vpd_size_rsp(crq, adapter); | |
4444 | break; | |
4445 | case GET_VPD_RSP: | |
4446 | handle_vpd_rsp(crq, adapter); | |
4447 | break; | |
032c5e82 TF |
4448 | default: |
4449 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", | |
4450 | gen_crq->cmd); | |
4451 | } | |
4452 | } | |
4453 | ||
4454 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) | |
4455 | { | |
4456 | struct ibmvnic_adapter *adapter = instance; | |
6c267b3d | 4457 | |
6c267b3d | 4458 | tasklet_schedule(&adapter->tasklet); |
6c267b3d TF |
4459 | return IRQ_HANDLED; |
4460 | } | |
4461 | ||
4462 | static void ibmvnic_tasklet(void *data) | |
4463 | { | |
4464 | struct ibmvnic_adapter *adapter = data; | |
032c5e82 | 4465 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
032c5e82 TF |
4466 | union ibmvnic_crq *crq; |
4467 | unsigned long flags; | |
4468 | bool done = false; | |
4469 | ||
4470 | spin_lock_irqsave(&queue->lock, flags); | |
032c5e82 TF |
4471 | while (!done) { |
4472 | /* Pull all the valid messages off the CRQ */ | |
4473 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { | |
4474 | ibmvnic_handle_crq(crq, adapter); | |
4475 | crq->generic.first = 0; | |
4476 | } | |
ed7ecbf7 BK |
4477 | |
4478 | /* remain in tasklet until all | |
4479 | * capabilities responses are received | |
4480 | */ | |
4481 | if (!adapter->wait_capability) | |
4482 | done = true; | |
032c5e82 | 4483 | } |
249168ad TF |
4484 | /* if capabilities CRQ's were sent in this tasklet, the following |
4485 | * tasklet must wait until all responses are received | |
4486 | */ | |
4487 | if (atomic_read(&adapter->running_cap_crqs) != 0) | |
4488 | adapter->wait_capability = true; | |
032c5e82 | 4489 | spin_unlock_irqrestore(&queue->lock, flags); |
032c5e82 TF |
4490 | } |
4491 | ||
4492 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) | |
4493 | { | |
4494 | struct vio_dev *vdev = adapter->vdev; | |
4495 | int rc; | |
4496 | ||
4497 | do { | |
4498 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); | |
4499 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4500 | ||
4501 | if (rc) | |
4502 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); | |
4503 | ||
4504 | return rc; | |
4505 | } | |
4506 | ||
4507 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) | |
4508 | { | |
4509 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
4510 | struct device *dev = &adapter->vdev->dev; | |
4511 | struct vio_dev *vdev = adapter->vdev; | |
4512 | int rc; | |
4513 | ||
4514 | /* Close the CRQ */ | |
4515 | do { | |
4516 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
4517 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4518 | ||
4519 | /* Clean out the queue */ | |
4520 | memset(crq->msgs, 0, PAGE_SIZE); | |
4521 | crq->cur = 0; | |
5153698e | 4522 | crq->active = false; |
032c5e82 TF |
4523 | |
4524 | /* And re-open it again */ | |
4525 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
4526 | crq->msg_token, PAGE_SIZE); | |
4527 | ||
4528 | if (rc == H_CLOSED) | |
4529 | /* Adapter is good, but other end is not ready */ | |
4530 | dev_warn(dev, "Partner adapter not ready\n"); | |
4531 | else if (rc != 0) | |
4532 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); | |
4533 | ||
4534 | return rc; | |
4535 | } | |
4536 | ||
f992887c | 4537 | static void release_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
4538 | { |
4539 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
4540 | struct vio_dev *vdev = adapter->vdev; | |
4541 | long rc; | |
4542 | ||
f992887c NF |
4543 | if (!crq->msgs) |
4544 | return; | |
4545 | ||
032c5e82 TF |
4546 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); |
4547 | free_irq(vdev->irq, adapter); | |
6c267b3d | 4548 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
4549 | do { |
4550 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
4551 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4552 | ||
4553 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, | |
4554 | DMA_BIDIRECTIONAL); | |
4555 | free_page((unsigned long)crq->msgs); | |
f992887c | 4556 | crq->msgs = NULL; |
5153698e | 4557 | crq->active = false; |
032c5e82 TF |
4558 | } |
4559 | ||
f992887c | 4560 | static int init_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
4561 | { |
4562 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
4563 | struct device *dev = &adapter->vdev->dev; | |
4564 | struct vio_dev *vdev = adapter->vdev; | |
4565 | int rc, retrc = -ENOMEM; | |
4566 | ||
f992887c NF |
4567 | if (crq->msgs) |
4568 | return 0; | |
4569 | ||
032c5e82 TF |
4570 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); |
4571 | /* Should we allocate more than one page? */ | |
4572 | ||
4573 | if (!crq->msgs) | |
4574 | return -ENOMEM; | |
4575 | ||
4576 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); | |
4577 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, | |
4578 | DMA_BIDIRECTIONAL); | |
4579 | if (dma_mapping_error(dev, crq->msg_token)) | |
4580 | goto map_failed; | |
4581 | ||
4582 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
4583 | crq->msg_token, PAGE_SIZE); | |
4584 | ||
4585 | if (rc == H_RESOURCE) | |
4586 | /* maybe kexecing and resource is busy. try a reset */ | |
4587 | rc = ibmvnic_reset_crq(adapter); | |
4588 | retrc = rc; | |
4589 | ||
4590 | if (rc == H_CLOSED) { | |
4591 | dev_warn(dev, "Partner adapter not ready\n"); | |
4592 | } else if (rc) { | |
4593 | dev_warn(dev, "Error %d opening adapter\n", rc); | |
4594 | goto reg_crq_failed; | |
4595 | } | |
4596 | ||
4597 | retrc = 0; | |
4598 | ||
6c267b3d TF |
4599 | tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet, |
4600 | (unsigned long)adapter); | |
4601 | ||
032c5e82 TF |
4602 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); |
4603 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, | |
4604 | adapter); | |
4605 | if (rc) { | |
4606 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", | |
4607 | vdev->irq, rc); | |
4608 | goto req_irq_failed; | |
4609 | } | |
4610 | ||
4611 | rc = vio_enable_interrupts(vdev); | |
4612 | if (rc) { | |
4613 | dev_err(dev, "Error %d enabling interrupts\n", rc); | |
4614 | goto req_irq_failed; | |
4615 | } | |
4616 | ||
4617 | crq->cur = 0; | |
4618 | spin_lock_init(&crq->lock); | |
4619 | ||
4620 | return retrc; | |
4621 | ||
4622 | req_irq_failed: | |
6c267b3d | 4623 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
4624 | do { |
4625 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
4626 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4627 | reg_crq_failed: | |
4628 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
4629 | map_failed: | |
4630 | free_page((unsigned long)crq->msgs); | |
f992887c | 4631 | crq->msgs = NULL; |
032c5e82 TF |
4632 | return retrc; |
4633 | } | |
4634 | ||
8a348450 | 4635 | static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter) |
032c5e82 | 4636 | { |
f6ef6408 | 4637 | struct device *dev = &adapter->vdev->dev; |
ea22d51a | 4638 | unsigned long timeout = msecs_to_jiffies(30000); |
d7c0ef36 | 4639 | u64 old_num_rx_queues, old_num_tx_queues; |
f6ef6408 JA |
4640 | int rc; |
4641 | ||
017892c1 JA |
4642 | adapter->from_passive_init = false; |
4643 | ||
d7c0ef36 NF |
4644 | old_num_rx_queues = adapter->req_rx_queues; |
4645 | old_num_tx_queues = adapter->req_tx_queues; | |
4646 | ||
bbd669a8 | 4647 | reinit_completion(&adapter->init_done); |
6a2fb0e9 | 4648 | adapter->init_done_rc = 0; |
f6ef6408 JA |
4649 | ibmvnic_send_crq_init(adapter); |
4650 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
4651 | dev_err(dev, "Initialization sequence timed out\n"); | |
017892c1 JA |
4652 | return -1; |
4653 | } | |
4654 | ||
6a2fb0e9 NF |
4655 | if (adapter->init_done_rc) { |
4656 | release_crq_queue(adapter); | |
4657 | return adapter->init_done_rc; | |
4658 | } | |
4659 | ||
017892c1 JA |
4660 | if (adapter->from_passive_init) { |
4661 | adapter->state = VNIC_OPEN; | |
4662 | adapter->from_passive_init = false; | |
f6ef6408 JA |
4663 | return -1; |
4664 | } | |
4665 | ||
30f79625 NF |
4666 | if (adapter->resetting && !adapter->wait_for_reset && |
4667 | adapter->reset_reason != VNIC_RESET_MOBILITY) { | |
d7c0ef36 NF |
4668 | if (adapter->req_rx_queues != old_num_rx_queues || |
4669 | adapter->req_tx_queues != old_num_tx_queues) { | |
4670 | release_sub_crqs(adapter, 0); | |
4671 | rc = init_sub_crqs(adapter); | |
4672 | } else { | |
4673 | rc = reset_sub_crq_queues(adapter); | |
4674 | } | |
4675 | } else { | |
57a49436 | 4676 | rc = init_sub_crqs(adapter); |
d7c0ef36 NF |
4677 | } |
4678 | ||
1bb3c739 NF |
4679 | if (rc) { |
4680 | dev_err(dev, "Initialization of sub crqs failed\n"); | |
4681 | release_crq_queue(adapter); | |
5df969c3 TF |
4682 | return rc; |
4683 | } | |
4684 | ||
4685 | rc = init_sub_crq_irqs(adapter); | |
4686 | if (rc) { | |
4687 | dev_err(dev, "Failed to initialize sub crq irqs\n"); | |
4688 | release_crq_queue(adapter); | |
1bb3c739 NF |
4689 | } |
4690 | ||
4691 | return rc; | |
f6ef6408 JA |
4692 | } |
4693 | ||
8a348450 TF |
4694 | static int ibmvnic_init(struct ibmvnic_adapter *adapter) |
4695 | { | |
4696 | struct device *dev = &adapter->vdev->dev; | |
4697 | unsigned long timeout = msecs_to_jiffies(30000); | |
4698 | int rc; | |
4699 | ||
4700 | adapter->from_passive_init = false; | |
4701 | ||
8a348450 TF |
4702 | adapter->init_done_rc = 0; |
4703 | ibmvnic_send_crq_init(adapter); | |
4704 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
4705 | dev_err(dev, "Initialization sequence timed out\n"); | |
4706 | return -1; | |
4707 | } | |
4708 | ||
4709 | if (adapter->init_done_rc) { | |
4710 | release_crq_queue(adapter); | |
4711 | return adapter->init_done_rc; | |
4712 | } | |
4713 | ||
4714 | if (adapter->from_passive_init) { | |
4715 | adapter->state = VNIC_OPEN; | |
4716 | adapter->from_passive_init = false; | |
4717 | return -1; | |
4718 | } | |
4719 | ||
4720 | rc = init_sub_crqs(adapter); | |
4721 | if (rc) { | |
4722 | dev_err(dev, "Initialization of sub crqs failed\n"); | |
4723 | release_crq_queue(adapter); | |
4724 | return rc; | |
4725 | } | |
4726 | ||
4727 | rc = init_sub_crq_irqs(adapter); | |
4728 | if (rc) { | |
4729 | dev_err(dev, "Failed to initialize sub crq irqs\n"); | |
4730 | release_crq_queue(adapter); | |
4731 | } | |
4732 | ||
4733 | return rc; | |
4734 | } | |
4735 | ||
40c9db8a TF |
4736 | static struct device_attribute dev_attr_failover; |
4737 | ||
f6ef6408 JA |
4738 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) |
4739 | { | |
032c5e82 TF |
4740 | struct ibmvnic_adapter *adapter; |
4741 | struct net_device *netdev; | |
4742 | unsigned char *mac_addr_p; | |
032c5e82 TF |
4743 | int rc; |
4744 | ||
4745 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", | |
4746 | dev->unit_address); | |
4747 | ||
4748 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, | |
4749 | VETH_MAC_ADDR, NULL); | |
4750 | if (!mac_addr_p) { | |
4751 | dev_err(&dev->dev, | |
4752 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", | |
4753 | __FILE__, __LINE__); | |
4754 | return 0; | |
4755 | } | |
4756 | ||
4757 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), | |
d45cc3a4 | 4758 | IBMVNIC_MAX_QUEUES); |
032c5e82 TF |
4759 | if (!netdev) |
4760 | return -ENOMEM; | |
4761 | ||
4762 | adapter = netdev_priv(netdev); | |
90c8014c | 4763 | adapter->state = VNIC_PROBING; |
032c5e82 TF |
4764 | dev_set_drvdata(&dev->dev, netdev); |
4765 | adapter->vdev = dev; | |
4766 | adapter->netdev = netdev; | |
4767 | ||
4768 | ether_addr_copy(adapter->mac_addr, mac_addr_p); | |
4769 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); | |
4770 | netdev->irq = dev->irq; | |
4771 | netdev->netdev_ops = &ibmvnic_netdev_ops; | |
4772 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; | |
4773 | SET_NETDEV_DEV(netdev, &dev->dev); | |
4774 | ||
4775 | spin_lock_init(&adapter->stats_lock); | |
4776 | ||
ed651a10 NF |
4777 | INIT_WORK(&adapter->ibmvnic_reset, __ibmvnic_reset); |
4778 | INIT_LIST_HEAD(&adapter->rwi_list); | |
6c5c7489 | 4779 | spin_lock_init(&adapter->rwi_lock); |
bbd669a8 | 4780 | init_completion(&adapter->init_done); |
ed651a10 NF |
4781 | adapter->resetting = false; |
4782 | ||
c26eba03 JA |
4783 | adapter->mac_change_pending = false; |
4784 | ||
6a2fb0e9 | 4785 | do { |
30f79625 NF |
4786 | rc = init_crq_queue(adapter); |
4787 | if (rc) { | |
4788 | dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", | |
4789 | rc); | |
4790 | goto ibmvnic_init_fail; | |
4791 | } | |
4792 | ||
6a2fb0e9 | 4793 | rc = ibmvnic_init(adapter); |
7c1885ae NF |
4794 | if (rc && rc != EAGAIN) |
4795 | goto ibmvnic_init_fail; | |
6a2fb0e9 | 4796 | } while (rc == EAGAIN); |
032c5e82 | 4797 | |
07184213 TF |
4798 | rc = init_stats_buffers(adapter); |
4799 | if (rc) | |
4800 | goto ibmvnic_init_fail; | |
4801 | ||
4802 | rc = init_stats_token(adapter); | |
4803 | if (rc) | |
4804 | goto ibmvnic_stats_fail; | |
4805 | ||
f39f0d1e | 4806 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
c26eba03 JA |
4807 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
4808 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; | |
032c5e82 | 4809 | |
40c9db8a | 4810 | rc = device_create_file(&dev->dev, &dev_attr_failover); |
7c1885ae | 4811 | if (rc) |
07184213 | 4812 | goto ibmvnic_dev_file_err; |
40c9db8a | 4813 | |
e876a8a7 | 4814 | netif_carrier_off(netdev); |
032c5e82 TF |
4815 | rc = register_netdev(netdev); |
4816 | if (rc) { | |
4817 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); | |
7c1885ae | 4818 | goto ibmvnic_register_fail; |
032c5e82 TF |
4819 | } |
4820 | dev_info(&dev->dev, "ibmvnic registered\n"); | |
4821 | ||
90c8014c | 4822 | adapter->state = VNIC_PROBED; |
c26eba03 JA |
4823 | |
4824 | adapter->wait_for_reset = false; | |
4825 | ||
032c5e82 | 4826 | return 0; |
7c1885ae NF |
4827 | |
4828 | ibmvnic_register_fail: | |
4829 | device_remove_file(&dev->dev, &dev_attr_failover); | |
4830 | ||
07184213 TF |
4831 | ibmvnic_dev_file_err: |
4832 | release_stats_token(adapter); | |
4833 | ||
4834 | ibmvnic_stats_fail: | |
4835 | release_stats_buffers(adapter); | |
4836 | ||
7c1885ae | 4837 | ibmvnic_init_fail: |
d7c0ef36 | 4838 | release_sub_crqs(adapter, 1); |
7c1885ae NF |
4839 | release_crq_queue(adapter); |
4840 | free_netdev(netdev); | |
4841 | ||
4842 | return rc; | |
032c5e82 TF |
4843 | } |
4844 | ||
4845 | static int ibmvnic_remove(struct vio_dev *dev) | |
4846 | { | |
4847 | struct net_device *netdev = dev_get_drvdata(&dev->dev); | |
37489055 | 4848 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
032c5e82 | 4849 | |
90c8014c | 4850 | adapter->state = VNIC_REMOVING; |
a5681e20 JK |
4851 | rtnl_lock(); |
4852 | unregister_netdevice(netdev); | |
37489055 NF |
4853 | |
4854 | release_resources(adapter); | |
d7c0ef36 | 4855 | release_sub_crqs(adapter, 1); |
37489055 NF |
4856 | release_crq_queue(adapter); |
4857 | ||
53cc7721 TF |
4858 | release_stats_token(adapter); |
4859 | release_stats_buffers(adapter); | |
4860 | ||
90c8014c NF |
4861 | adapter->state = VNIC_REMOVED; |
4862 | ||
a5681e20 | 4863 | rtnl_unlock(); |
40c9db8a | 4864 | device_remove_file(&dev->dev, &dev_attr_failover); |
032c5e82 TF |
4865 | free_netdev(netdev); |
4866 | dev_set_drvdata(&dev->dev, NULL); | |
4867 | ||
4868 | return 0; | |
4869 | } | |
4870 | ||
40c9db8a TF |
4871 | static ssize_t failover_store(struct device *dev, struct device_attribute *attr, |
4872 | const char *buf, size_t count) | |
4873 | { | |
4874 | struct net_device *netdev = dev_get_drvdata(dev); | |
4875 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
4876 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
4877 | __be64 session_token; | |
4878 | long rc; | |
4879 | ||
4880 | if (!sysfs_streq(buf, "1")) | |
4881 | return -EINVAL; | |
4882 | ||
4883 | rc = plpar_hcall(H_VIOCTL, retbuf, adapter->vdev->unit_address, | |
4884 | H_GET_SESSION_TOKEN, 0, 0, 0); | |
4885 | if (rc) { | |
4886 | netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n", | |
4887 | rc); | |
4888 | return -EINVAL; | |
4889 | } | |
4890 | ||
4891 | session_token = (__be64)retbuf[0]; | |
4892 | netdev_dbg(netdev, "Initiating client failover, session id %llx\n", | |
4893 | be64_to_cpu(session_token)); | |
4894 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
4895 | H_SESSION_ERR_DETECTED, session_token, 0, 0); | |
4896 | if (rc) { | |
4897 | netdev_err(netdev, "Client initiated failover failed, rc %ld\n", | |
4898 | rc); | |
4899 | return -EINVAL; | |
4900 | } | |
4901 | ||
4902 | return count; | |
4903 | } | |
4904 | ||
6cbaefb4 | 4905 | static DEVICE_ATTR_WO(failover); |
40c9db8a | 4906 | |
032c5e82 TF |
4907 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) |
4908 | { | |
4909 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
4910 | struct ibmvnic_adapter *adapter; | |
4911 | struct iommu_table *tbl; | |
4912 | unsigned long ret = 0; | |
4913 | int i; | |
4914 | ||
4915 | tbl = get_iommu_table_base(&vdev->dev); | |
4916 | ||
4917 | /* netdev inits at probe time along with the structures we need below*/ | |
4918 | if (!netdev) | |
4919 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); | |
4920 | ||
4921 | adapter = netdev_priv(netdev); | |
4922 | ||
4923 | ret += PAGE_SIZE; /* the crq message queue */ | |
032c5e82 TF |
4924 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); |
4925 | ||
4926 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) | |
4927 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ | |
4928 | ||
4929 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
4930 | i++) | |
4931 | ret += adapter->rx_pool[i].size * | |
4932 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); | |
4933 | ||
4934 | return ret; | |
4935 | } | |
4936 | ||
4937 | static int ibmvnic_resume(struct device *dev) | |
4938 | { | |
4939 | struct net_device *netdev = dev_get_drvdata(dev); | |
4940 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
032c5e82 | 4941 | |
cb89ba24 JA |
4942 | if (adapter->state != VNIC_OPEN) |
4943 | return 0; | |
4944 | ||
a248878d | 4945 | tasklet_schedule(&adapter->tasklet); |
032c5e82 TF |
4946 | |
4947 | return 0; | |
4948 | } | |
4949 | ||
8c37bc67 | 4950 | static const struct vio_device_id ibmvnic_device_table[] = { |
032c5e82 TF |
4951 | {"network", "IBM,vnic"}, |
4952 | {"", "" } | |
4953 | }; | |
4954 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); | |
4955 | ||
4956 | static const struct dev_pm_ops ibmvnic_pm_ops = { | |
4957 | .resume = ibmvnic_resume | |
4958 | }; | |
4959 | ||
4960 | static struct vio_driver ibmvnic_driver = { | |
4961 | .id_table = ibmvnic_device_table, | |
4962 | .probe = ibmvnic_probe, | |
4963 | .remove = ibmvnic_remove, | |
4964 | .get_desired_dma = ibmvnic_get_desired_dma, | |
4965 | .name = ibmvnic_driver_name, | |
4966 | .pm = &ibmvnic_pm_ops, | |
4967 | }; | |
4968 | ||
4969 | /* module functions */ | |
4970 | static int __init ibmvnic_module_init(void) | |
4971 | { | |
4972 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, | |
4973 | IBMVNIC_DRIVER_VERSION); | |
4974 | ||
4975 | return vio_register_driver(&ibmvnic_driver); | |
4976 | } | |
4977 | ||
4978 | static void __exit ibmvnic_module_exit(void) | |
4979 | { | |
4980 | vio_unregister_driver(&ibmvnic_driver); | |
4981 | } | |
4982 | ||
4983 | module_init(ibmvnic_module_init); | |
4984 | module_exit(ibmvnic_module_exit); |