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d5bb994b | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
032c5e82 TF |
2 | /**************************************************************************/ |
3 | /* */ | |
4 | /* IBM System i and System p Virtual NIC Device Driver */ | |
5 | /* Copyright (C) 2014 IBM Corp. */ | |
6 | /* Santiago Leon (santi_leon@yahoo.com) */ | |
7 | /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */ | |
8 | /* John Allen (jallen@linux.vnet.ibm.com) */ | |
9 | /* */ | |
032c5e82 TF |
10 | /* */ |
11 | /* This module contains the implementation of a virtual ethernet device */ | |
12 | /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */ | |
13 | /* option of the RS/6000 Platform Architecture to interface with virtual */ | |
14 | /* ethernet NICs that are presented to the partition by the hypervisor. */ | |
15 | /* */ | |
16 | /* Messages are passed between the VNIC driver and the VNIC server using */ | |
17 | /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */ | |
18 | /* issue and receive commands that initiate communication with the server */ | |
19 | /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */ | |
20 | /* are used by the driver to notify the server that a packet is */ | |
21 | /* ready for transmission or that a buffer has been added to receive a */ | |
22 | /* packet. Subsequently, sCRQs are used by the server to notify the */ | |
23 | /* driver that a packet transmission has been completed or that a packet */ | |
24 | /* has been received and placed in a waiting buffer. */ | |
25 | /* */ | |
26 | /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */ | |
27 | /* which skbs are DMA mapped and immediately unmapped when the transmit */ | |
28 | /* or receive has been completed, the VNIC driver is required to use */ | |
29 | /* "long term mapping". This entails that large, continuous DMA mapped */ | |
30 | /* buffers are allocated on driver initialization and these buffers are */ | |
31 | /* then continuously reused to pass skbs to and from the VNIC server. */ | |
32 | /* */ | |
33 | /**************************************************************************/ | |
34 | ||
35 | #include <linux/module.h> | |
36 | #include <linux/moduleparam.h> | |
37 | #include <linux/types.h> | |
38 | #include <linux/errno.h> | |
39 | #include <linux/completion.h> | |
40 | #include <linux/ioport.h> | |
41 | #include <linux/dma-mapping.h> | |
42 | #include <linux/kernel.h> | |
43 | #include <linux/netdevice.h> | |
44 | #include <linux/etherdevice.h> | |
45 | #include <linux/skbuff.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/delay.h> | |
48 | #include <linux/mm.h> | |
49 | #include <linux/ethtool.h> | |
50 | #include <linux/proc_fs.h> | |
4eb50ceb | 51 | #include <linux/if_arp.h> |
032c5e82 TF |
52 | #include <linux/in.h> |
53 | #include <linux/ip.h> | |
ad7775dc | 54 | #include <linux/ipv6.h> |
032c5e82 TF |
55 | #include <linux/irq.h> |
56 | #include <linux/kthread.h> | |
57 | #include <linux/seq_file.h> | |
032c5e82 TF |
58 | #include <linux/interrupt.h> |
59 | #include <net/net_namespace.h> | |
60 | #include <asm/hvcall.h> | |
61 | #include <linux/atomic.h> | |
62 | #include <asm/vio.h> | |
63 | #include <asm/iommu.h> | |
64 | #include <linux/uaccess.h> | |
65 | #include <asm/firmware.h> | |
65dc6891 | 66 | #include <linux/workqueue.h> |
6052d5e2 | 67 | #include <linux/if_vlan.h> |
37798d02 | 68 | #include <linux/utsname.h> |
032c5e82 TF |
69 | |
70 | #include "ibmvnic.h" | |
71 | ||
72 | static const char ibmvnic_driver_name[] = "ibmvnic"; | |
73 | static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver"; | |
74 | ||
78b07ac1 | 75 | MODULE_AUTHOR("Santiago Leon"); |
032c5e82 TF |
76 | MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver"); |
77 | MODULE_LICENSE("GPL"); | |
78 | MODULE_VERSION(IBMVNIC_DRIVER_VERSION); | |
79 | ||
80 | static int ibmvnic_version = IBMVNIC_INITIAL_VERSION; | |
81 | static int ibmvnic_remove(struct vio_dev *); | |
d7c0ef36 | 82 | static void release_sub_crqs(struct ibmvnic_adapter *, bool); |
032c5e82 TF |
83 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *); |
84 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); | |
85 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); | |
86 | static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); | |
87 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, | |
88 | union sub_crq *sub_crq); | |
ad7775dc | 89 | static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); |
032c5e82 TF |
90 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); |
91 | static int enable_scrq_irq(struct ibmvnic_adapter *, | |
92 | struct ibmvnic_sub_crq_queue *); | |
93 | static int disable_scrq_irq(struct ibmvnic_adapter *, | |
94 | struct ibmvnic_sub_crq_queue *); | |
95 | static int pending_scrq(struct ibmvnic_adapter *, | |
96 | struct ibmvnic_sub_crq_queue *); | |
97 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, | |
98 | struct ibmvnic_sub_crq_queue *); | |
99 | static int ibmvnic_poll(struct napi_struct *napi, int data); | |
100 | static void send_map_query(struct ibmvnic_adapter *adapter); | |
9c4eaabd TF |
101 | static int send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); |
102 | static int send_request_unmap(struct ibmvnic_adapter *, u8); | |
20a8ab74 | 103 | static int send_login(struct ibmvnic_adapter *adapter); |
bd0b6723 | 104 | static void send_cap_queries(struct ibmvnic_adapter *adapter); |
4d96f12a | 105 | static int init_sub_crqs(struct ibmvnic_adapter *); |
bd0b6723 | 106 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter); |
ea5509f5 | 107 | static int ibmvnic_init(struct ibmvnic_adapter *); |
8a348450 | 108 | static int ibmvnic_reset_init(struct ibmvnic_adapter *); |
f992887c | 109 | static void release_crq_queue(struct ibmvnic_adapter *); |
62740e97 | 110 | static int __ibmvnic_set_mac(struct net_device *, u8 *); |
30f79625 | 111 | static int init_crq_queue(struct ibmvnic_adapter *adapter); |
f8d6ae0d | 112 | static int send_query_phys_parms(struct ibmvnic_adapter *adapter); |
032c5e82 TF |
113 | |
114 | struct ibmvnic_stat { | |
115 | char name[ETH_GSTRING_LEN]; | |
116 | int offset; | |
117 | }; | |
118 | ||
119 | #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ | |
120 | offsetof(struct ibmvnic_statistics, stat)) | |
121 | #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) | |
122 | ||
123 | static const struct ibmvnic_stat ibmvnic_stats[] = { | |
124 | {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, | |
125 | {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, | |
126 | {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, | |
127 | {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, | |
128 | {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, | |
129 | {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, | |
130 | {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, | |
131 | {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, | |
132 | {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, | |
133 | {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, | |
134 | {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, | |
135 | {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, | |
136 | {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, | |
137 | {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, | |
138 | {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, | |
139 | {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, | |
140 | {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, | |
141 | {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, | |
142 | {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, | |
143 | {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, | |
144 | {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, | |
145 | {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, | |
146 | }; | |
147 | ||
148 | static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, | |
149 | unsigned long length, unsigned long *number, | |
150 | unsigned long *irq) | |
151 | { | |
152 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
153 | long rc; | |
154 | ||
155 | rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); | |
156 | *number = retbuf[0]; | |
157 | *irq = retbuf[1]; | |
158 | ||
159 | return rc; | |
160 | } | |
161 | ||
476d96ca TF |
162 | /** |
163 | * ibmvnic_wait_for_completion - Check device state and wait for completion | |
164 | * @adapter: private device data | |
165 | * @comp_done: completion structure to wait for | |
166 | * @timeout: time to wait in milliseconds | |
167 | * | |
168 | * Wait for a completion signal or until the timeout limit is reached | |
169 | * while checking that the device is still active. | |
170 | */ | |
171 | static int ibmvnic_wait_for_completion(struct ibmvnic_adapter *adapter, | |
172 | struct completion *comp_done, | |
173 | unsigned long timeout) | |
174 | { | |
175 | struct net_device *netdev; | |
176 | unsigned long div_timeout; | |
177 | u8 retry; | |
178 | ||
179 | netdev = adapter->netdev; | |
180 | retry = 5; | |
181 | div_timeout = msecs_to_jiffies(timeout / retry); | |
182 | while (true) { | |
183 | if (!adapter->crq.active) { | |
184 | netdev_err(netdev, "Device down!\n"); | |
185 | return -ENODEV; | |
186 | } | |
8f9cc1ee | 187 | if (!retry--) |
476d96ca TF |
188 | break; |
189 | if (wait_for_completion_timeout(comp_done, div_timeout)) | |
190 | return 0; | |
191 | } | |
192 | netdev_err(netdev, "Operation timed out.\n"); | |
193 | return -ETIMEDOUT; | |
194 | } | |
195 | ||
032c5e82 TF |
196 | static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, |
197 | struct ibmvnic_long_term_buff *ltb, int size) | |
198 | { | |
199 | struct device *dev = &adapter->vdev->dev; | |
9c4eaabd | 200 | int rc; |
032c5e82 TF |
201 | |
202 | ltb->size = size; | |
203 | ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, | |
204 | GFP_KERNEL); | |
205 | ||
206 | if (!ltb->buff) { | |
207 | dev_err(dev, "Couldn't alloc long term buffer\n"); | |
208 | return -ENOMEM; | |
209 | } | |
210 | ltb->map_id = adapter->map_id; | |
211 | adapter->map_id++; | |
db5d0b59 | 212 | |
ff25dcb9 TF |
213 | mutex_lock(&adapter->fw_lock); |
214 | adapter->fw_done_rc = 0; | |
070eca95 | 215 | reinit_completion(&adapter->fw_done); |
9c4eaabd TF |
216 | rc = send_request_map(adapter, ltb->addr, |
217 | ltb->size, ltb->map_id); | |
218 | if (rc) { | |
219 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); | |
ff25dcb9 | 220 | mutex_unlock(&adapter->fw_lock); |
9c4eaabd TF |
221 | return rc; |
222 | } | |
476d96ca TF |
223 | |
224 | rc = ibmvnic_wait_for_completion(adapter, &adapter->fw_done, 10000); | |
225 | if (rc) { | |
226 | dev_err(dev, | |
227 | "Long term map request aborted or timed out,rc = %d\n", | |
228 | rc); | |
229 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); | |
ff25dcb9 | 230 | mutex_unlock(&adapter->fw_lock); |
476d96ca TF |
231 | return rc; |
232 | } | |
f3be0cbc TF |
233 | |
234 | if (adapter->fw_done_rc) { | |
235 | dev_err(dev, "Couldn't map long term buffer,rc = %d\n", | |
236 | adapter->fw_done_rc); | |
4cf2ddf3 | 237 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
ff25dcb9 | 238 | mutex_unlock(&adapter->fw_lock); |
f3be0cbc TF |
239 | return -1; |
240 | } | |
ff25dcb9 | 241 | mutex_unlock(&adapter->fw_lock); |
032c5e82 TF |
242 | return 0; |
243 | } | |
244 | ||
245 | static void free_long_term_buff(struct ibmvnic_adapter *adapter, | |
246 | struct ibmvnic_long_term_buff *ltb) | |
247 | { | |
248 | struct device *dev = &adapter->vdev->dev; | |
249 | ||
c657e32c NF |
250 | if (!ltb->buff) |
251 | return; | |
252 | ||
ed651a10 NF |
253 | if (adapter->reset_reason != VNIC_RESET_FAILOVER && |
254 | adapter->reset_reason != VNIC_RESET_MOBILITY) | |
dfad09a6 | 255 | send_request_unmap(adapter, ltb->map_id); |
59af56c2 | 256 | dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); |
032c5e82 TF |
257 | } |
258 | ||
f3be0cbc TF |
259 | static int reset_long_term_buff(struct ibmvnic_adapter *adapter, |
260 | struct ibmvnic_long_term_buff *ltb) | |
261 | { | |
476d96ca | 262 | struct device *dev = &adapter->vdev->dev; |
9c4eaabd TF |
263 | int rc; |
264 | ||
f3be0cbc TF |
265 | memset(ltb->buff, 0, ltb->size); |
266 | ||
ff25dcb9 TF |
267 | mutex_lock(&adapter->fw_lock); |
268 | adapter->fw_done_rc = 0; | |
269 | ||
070eca95 | 270 | reinit_completion(&adapter->fw_done); |
9c4eaabd | 271 | rc = send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id); |
ff25dcb9 TF |
272 | if (rc) { |
273 | mutex_unlock(&adapter->fw_lock); | |
9c4eaabd | 274 | return rc; |
ff25dcb9 | 275 | } |
476d96ca TF |
276 | |
277 | rc = ibmvnic_wait_for_completion(adapter, &adapter->fw_done, 10000); | |
278 | if (rc) { | |
279 | dev_info(dev, | |
280 | "Reset failed, long term map request timed out or aborted\n"); | |
ff25dcb9 | 281 | mutex_unlock(&adapter->fw_lock); |
476d96ca TF |
282 | return rc; |
283 | } | |
f3be0cbc TF |
284 | |
285 | if (adapter->fw_done_rc) { | |
476d96ca | 286 | dev_info(dev, |
f3be0cbc TF |
287 | "Reset failed, attempting to free and reallocate buffer\n"); |
288 | free_long_term_buff(adapter, ltb); | |
ff25dcb9 | 289 | mutex_unlock(&adapter->fw_lock); |
f3be0cbc TF |
290 | return alloc_long_term_buff(adapter, ltb, ltb->size); |
291 | } | |
ff25dcb9 | 292 | mutex_unlock(&adapter->fw_lock); |
f3be0cbc TF |
293 | return 0; |
294 | } | |
295 | ||
f185a49a TF |
296 | static void deactivate_rx_pools(struct ibmvnic_adapter *adapter) |
297 | { | |
298 | int i; | |
299 | ||
300 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
301 | i++) | |
302 | adapter->rx_pool[i].active = 0; | |
303 | } | |
304 | ||
032c5e82 TF |
305 | static void replenish_rx_pool(struct ibmvnic_adapter *adapter, |
306 | struct ibmvnic_rx_pool *pool) | |
307 | { | |
308 | int count = pool->size - atomic_read(&pool->available); | |
309 | struct device *dev = &adapter->vdev->dev; | |
310 | int buffers_added = 0; | |
311 | unsigned long lpar_rc; | |
312 | union sub_crq sub_crq; | |
313 | struct sk_buff *skb; | |
314 | unsigned int offset; | |
315 | dma_addr_t dma_addr; | |
316 | unsigned char *dst; | |
317 | u64 *handle_array; | |
318 | int shift = 0; | |
319 | int index; | |
320 | int i; | |
321 | ||
f185a49a TF |
322 | if (!pool->active) |
323 | return; | |
324 | ||
032c5e82 TF |
325 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + |
326 | be32_to_cpu(adapter->login_rsp_buf-> | |
327 | off_rxadd_subcrqs)); | |
328 | ||
329 | for (i = 0; i < count; ++i) { | |
330 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); | |
331 | if (!skb) { | |
332 | dev_err(dev, "Couldn't replenish rx buff\n"); | |
333 | adapter->replenish_no_mem++; | |
334 | break; | |
335 | } | |
336 | ||
337 | index = pool->free_map[pool->next_free]; | |
338 | ||
339 | if (pool->rx_buff[index].skb) | |
340 | dev_err(dev, "Inconsistent free_map!\n"); | |
341 | ||
342 | /* Copy the skb to the long term mapped DMA buffer */ | |
343 | offset = index * pool->buff_size; | |
344 | dst = pool->long_term_buff.buff + offset; | |
345 | memset(dst, 0, pool->buff_size); | |
346 | dma_addr = pool->long_term_buff.addr + offset; | |
347 | pool->rx_buff[index].data = dst; | |
348 | ||
349 | pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; | |
350 | pool->rx_buff[index].dma = dma_addr; | |
351 | pool->rx_buff[index].skb = skb; | |
352 | pool->rx_buff[index].pool_index = pool->index; | |
353 | pool->rx_buff[index].size = pool->buff_size; | |
354 | ||
355 | memset(&sub_crq, 0, sizeof(sub_crq)); | |
356 | sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; | |
357 | sub_crq.rx_add.correlator = | |
358 | cpu_to_be64((u64)&pool->rx_buff[index]); | |
359 | sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); | |
360 | sub_crq.rx_add.map_id = pool->long_term_buff.map_id; | |
361 | ||
362 | /* The length field of the sCRQ is defined to be 24 bits so the | |
363 | * buffer size needs to be left shifted by a byte before it is | |
364 | * converted to big endian to prevent the last byte from being | |
365 | * truncated. | |
366 | */ | |
367 | #ifdef __LITTLE_ENDIAN__ | |
368 | shift = 8; | |
369 | #endif | |
370 | sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); | |
371 | ||
372 | lpar_rc = send_subcrq(adapter, handle_array[pool->index], | |
373 | &sub_crq); | |
374 | if (lpar_rc != H_SUCCESS) | |
375 | goto failure; | |
376 | ||
377 | buffers_added++; | |
378 | adapter->replenish_add_buff_success++; | |
379 | pool->next_free = (pool->next_free + 1) % pool->size; | |
380 | } | |
381 | atomic_add(buffers_added, &pool->available); | |
382 | return; | |
383 | ||
384 | failure: | |
2d14d379 TF |
385 | if (lpar_rc != H_PARAMETER && lpar_rc != H_CLOSED) |
386 | dev_err_ratelimited(dev, "rx: replenish packet buffer failed\n"); | |
032c5e82 TF |
387 | pool->free_map[pool->next_free] = index; |
388 | pool->rx_buff[index].skb = NULL; | |
032c5e82 TF |
389 | |
390 | dev_kfree_skb_any(skb); | |
391 | adapter->replenish_add_buff_failure++; | |
392 | atomic_add(buffers_added, &pool->available); | |
f185a49a | 393 | |
5a18e1e0 | 394 | if (lpar_rc == H_CLOSED || adapter->failover_pending) { |
f185a49a | 395 | /* Disable buffer pool replenishment and report carrier off if |
5a18e1e0 TF |
396 | * queue is closed or pending failover. |
397 | * Firmware guarantees that a signal will be sent to the | |
398 | * driver, triggering a reset. | |
f185a49a TF |
399 | */ |
400 | deactivate_rx_pools(adapter); | |
401 | netif_carrier_off(adapter->netdev); | |
402 | } | |
032c5e82 TF |
403 | } |
404 | ||
405 | static void replenish_pools(struct ibmvnic_adapter *adapter) | |
406 | { | |
407 | int i; | |
408 | ||
032c5e82 TF |
409 | adapter->replenish_task_cycles++; |
410 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
411 | i++) { | |
412 | if (adapter->rx_pool[i].active) | |
413 | replenish_rx_pool(adapter, &adapter->rx_pool[i]); | |
414 | } | |
415 | } | |
416 | ||
3d52b594 JA |
417 | static void release_stats_buffers(struct ibmvnic_adapter *adapter) |
418 | { | |
419 | kfree(adapter->tx_stats_buffers); | |
420 | kfree(adapter->rx_stats_buffers); | |
b0992eca TF |
421 | adapter->tx_stats_buffers = NULL; |
422 | adapter->rx_stats_buffers = NULL; | |
3d52b594 JA |
423 | } |
424 | ||
425 | static int init_stats_buffers(struct ibmvnic_adapter *adapter) | |
426 | { | |
427 | adapter->tx_stats_buffers = | |
abcae546 | 428 | kcalloc(IBMVNIC_MAX_QUEUES, |
3d52b594 JA |
429 | sizeof(struct ibmvnic_tx_queue_stats), |
430 | GFP_KERNEL); | |
431 | if (!adapter->tx_stats_buffers) | |
432 | return -ENOMEM; | |
433 | ||
434 | adapter->rx_stats_buffers = | |
abcae546 | 435 | kcalloc(IBMVNIC_MAX_QUEUES, |
3d52b594 JA |
436 | sizeof(struct ibmvnic_rx_queue_stats), |
437 | GFP_KERNEL); | |
438 | if (!adapter->rx_stats_buffers) | |
439 | return -ENOMEM; | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
7bbc27a4 NF |
444 | static void release_stats_token(struct ibmvnic_adapter *adapter) |
445 | { | |
446 | struct device *dev = &adapter->vdev->dev; | |
447 | ||
448 | if (!adapter->stats_token) | |
449 | return; | |
450 | ||
451 | dma_unmap_single(dev, adapter->stats_token, | |
452 | sizeof(struct ibmvnic_statistics), | |
453 | DMA_FROM_DEVICE); | |
454 | adapter->stats_token = 0; | |
455 | } | |
456 | ||
457 | static int init_stats_token(struct ibmvnic_adapter *adapter) | |
458 | { | |
459 | struct device *dev = &adapter->vdev->dev; | |
460 | dma_addr_t stok; | |
461 | ||
462 | stok = dma_map_single(dev, &adapter->stats, | |
463 | sizeof(struct ibmvnic_statistics), | |
464 | DMA_FROM_DEVICE); | |
465 | if (dma_mapping_error(dev, stok)) { | |
466 | dev_err(dev, "Couldn't map stats buffer\n"); | |
467 | return -1; | |
468 | } | |
469 | ||
470 | adapter->stats_token = stok; | |
d1cf33d9 | 471 | netdev_dbg(adapter->netdev, "Stats token initialized (%llx)\n", stok); |
7bbc27a4 NF |
472 | return 0; |
473 | } | |
474 | ||
8c0543ad NF |
475 | static int reset_rx_pools(struct ibmvnic_adapter *adapter) |
476 | { | |
477 | struct ibmvnic_rx_pool *rx_pool; | |
478 | int rx_scrqs; | |
f3be0cbc | 479 | int i, j, rc; |
896d8695 JA |
480 | u64 *size_array; |
481 | ||
482 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
483 | be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size)); | |
8c0543ad NF |
484 | |
485 | rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
486 | for (i = 0; i < rx_scrqs; i++) { | |
487 | rx_pool = &adapter->rx_pool[i]; | |
488 | ||
d1cf33d9 NF |
489 | netdev_dbg(adapter->netdev, "Re-setting rx_pool[%d]\n", i); |
490 | ||
896d8695 JA |
491 | if (rx_pool->buff_size != be64_to_cpu(size_array[i])) { |
492 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
493 | rx_pool->buff_size = be64_to_cpu(size_array[i]); | |
7c940b1a TF |
494 | rc = alloc_long_term_buff(adapter, |
495 | &rx_pool->long_term_buff, | |
496 | rx_pool->size * | |
497 | rx_pool->buff_size); | |
896d8695 JA |
498 | } else { |
499 | rc = reset_long_term_buff(adapter, | |
500 | &rx_pool->long_term_buff); | |
501 | } | |
502 | ||
f3be0cbc TF |
503 | if (rc) |
504 | return rc; | |
8c0543ad NF |
505 | |
506 | for (j = 0; j < rx_pool->size; j++) | |
507 | rx_pool->free_map[j] = j; | |
508 | ||
509 | memset(rx_pool->rx_buff, 0, | |
510 | rx_pool->size * sizeof(struct ibmvnic_rx_buff)); | |
511 | ||
512 | atomic_set(&rx_pool->available, 0); | |
513 | rx_pool->next_alloc = 0; | |
514 | rx_pool->next_free = 0; | |
c3e53b9a | 515 | rx_pool->active = 1; |
8c0543ad NF |
516 | } |
517 | ||
518 | return 0; | |
519 | } | |
520 | ||
0ffe2cb7 | 521 | static void release_rx_pools(struct ibmvnic_adapter *adapter) |
032c5e82 | 522 | { |
0ffe2cb7 | 523 | struct ibmvnic_rx_pool *rx_pool; |
0ffe2cb7 | 524 | int i, j; |
032c5e82 | 525 | |
0ffe2cb7 | 526 | if (!adapter->rx_pool) |
032c5e82 TF |
527 | return; |
528 | ||
82e3be32 | 529 | for (i = 0; i < adapter->num_active_rx_pools; i++) { |
0ffe2cb7 NF |
530 | rx_pool = &adapter->rx_pool[i]; |
531 | ||
d1cf33d9 NF |
532 | netdev_dbg(adapter->netdev, "Releasing rx_pool[%d]\n", i); |
533 | ||
0ffe2cb7 NF |
534 | kfree(rx_pool->free_map); |
535 | free_long_term_buff(adapter, &rx_pool->long_term_buff); | |
536 | ||
537 | if (!rx_pool->rx_buff) | |
e0ebe942 | 538 | continue; |
0ffe2cb7 NF |
539 | |
540 | for (j = 0; j < rx_pool->size; j++) { | |
541 | if (rx_pool->rx_buff[j].skb) { | |
b7cdec3d TF |
542 | dev_kfree_skb_any(rx_pool->rx_buff[j].skb); |
543 | rx_pool->rx_buff[j].skb = NULL; | |
0ffe2cb7 NF |
544 | } |
545 | } | |
546 | ||
547 | kfree(rx_pool->rx_buff); | |
548 | } | |
549 | ||
550 | kfree(adapter->rx_pool); | |
551 | adapter->rx_pool = NULL; | |
82e3be32 | 552 | adapter->num_active_rx_pools = 0; |
0ffe2cb7 NF |
553 | } |
554 | ||
555 | static int init_rx_pools(struct net_device *netdev) | |
556 | { | |
557 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
558 | struct device *dev = &adapter->vdev->dev; | |
559 | struct ibmvnic_rx_pool *rx_pool; | |
560 | int rxadd_subcrqs; | |
561 | u64 *size_array; | |
562 | int i, j; | |
563 | ||
564 | rxadd_subcrqs = | |
565 | be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
566 | size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
567 | be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size)); | |
568 | ||
569 | adapter->rx_pool = kcalloc(rxadd_subcrqs, | |
570 | sizeof(struct ibmvnic_rx_pool), | |
571 | GFP_KERNEL); | |
572 | if (!adapter->rx_pool) { | |
573 | dev_err(dev, "Failed to allocate rx pools\n"); | |
574 | return -1; | |
575 | } | |
576 | ||
82e3be32 NF |
577 | adapter->num_active_rx_pools = rxadd_subcrqs; |
578 | ||
0ffe2cb7 NF |
579 | for (i = 0; i < rxadd_subcrqs; i++) { |
580 | rx_pool = &adapter->rx_pool[i]; | |
581 | ||
582 | netdev_dbg(adapter->netdev, | |
d1cf33d9 | 583 | "Initializing rx_pool[%d], %lld buffs, %lld bytes each\n", |
0ffe2cb7 NF |
584 | i, adapter->req_rx_add_entries_per_subcrq, |
585 | be64_to_cpu(size_array[i])); | |
586 | ||
587 | rx_pool->size = adapter->req_rx_add_entries_per_subcrq; | |
588 | rx_pool->index = i; | |
589 | rx_pool->buff_size = be64_to_cpu(size_array[i]); | |
590 | rx_pool->active = 1; | |
591 | ||
592 | rx_pool->free_map = kcalloc(rx_pool->size, sizeof(int), | |
593 | GFP_KERNEL); | |
594 | if (!rx_pool->free_map) { | |
595 | release_rx_pools(adapter); | |
596 | return -1; | |
032c5e82 | 597 | } |
0ffe2cb7 NF |
598 | |
599 | rx_pool->rx_buff = kcalloc(rx_pool->size, | |
600 | sizeof(struct ibmvnic_rx_buff), | |
601 | GFP_KERNEL); | |
602 | if (!rx_pool->rx_buff) { | |
603 | dev_err(dev, "Couldn't alloc rx buffers\n"); | |
604 | release_rx_pools(adapter); | |
605 | return -1; | |
606 | } | |
607 | ||
608 | if (alloc_long_term_buff(adapter, &rx_pool->long_term_buff, | |
609 | rx_pool->size * rx_pool->buff_size)) { | |
610 | release_rx_pools(adapter); | |
611 | return -1; | |
612 | } | |
613 | ||
614 | for (j = 0; j < rx_pool->size; ++j) | |
615 | rx_pool->free_map[j] = j; | |
616 | ||
617 | atomic_set(&rx_pool->available, 0); | |
618 | rx_pool->next_alloc = 0; | |
619 | rx_pool->next_free = 0; | |
032c5e82 | 620 | } |
0ffe2cb7 NF |
621 | |
622 | return 0; | |
032c5e82 TF |
623 | } |
624 | ||
e26dc25b TF |
625 | static int reset_one_tx_pool(struct ibmvnic_adapter *adapter, |
626 | struct ibmvnic_tx_pool *tx_pool) | |
627 | { | |
628 | int rc, i; | |
629 | ||
630 | rc = reset_long_term_buff(adapter, &tx_pool->long_term_buff); | |
631 | if (rc) | |
632 | return rc; | |
633 | ||
634 | memset(tx_pool->tx_buff, 0, | |
635 | tx_pool->num_buffers * | |
636 | sizeof(struct ibmvnic_tx_buff)); | |
637 | ||
638 | for (i = 0; i < tx_pool->num_buffers; i++) | |
639 | tx_pool->free_map[i] = i; | |
640 | ||
641 | tx_pool->consumer_index = 0; | |
642 | tx_pool->producer_index = 0; | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
8c0543ad NF |
647 | static int reset_tx_pools(struct ibmvnic_adapter *adapter) |
648 | { | |
8c0543ad | 649 | int tx_scrqs; |
e26dc25b | 650 | int i, rc; |
8c0543ad NF |
651 | |
652 | tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
653 | for (i = 0; i < tx_scrqs; i++) { | |
e26dc25b | 654 | rc = reset_one_tx_pool(adapter, &adapter->tso_pool[i]); |
f3be0cbc TF |
655 | if (rc) |
656 | return rc; | |
e26dc25b | 657 | rc = reset_one_tx_pool(adapter, &adapter->tx_pool[i]); |
fdb06105 TF |
658 | if (rc) |
659 | return rc; | |
8c0543ad NF |
660 | } |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
4e6759be DANR |
665 | static void release_vpd_data(struct ibmvnic_adapter *adapter) |
666 | { | |
667 | if (!adapter->vpd) | |
668 | return; | |
669 | ||
670 | kfree(adapter->vpd->buff); | |
671 | kfree(adapter->vpd); | |
b0992eca TF |
672 | |
673 | adapter->vpd = NULL; | |
4e6759be DANR |
674 | } |
675 | ||
fb79421c TF |
676 | static void release_one_tx_pool(struct ibmvnic_adapter *adapter, |
677 | struct ibmvnic_tx_pool *tx_pool) | |
678 | { | |
679 | kfree(tx_pool->tx_buff); | |
680 | kfree(tx_pool->free_map); | |
681 | free_long_term_buff(adapter, &tx_pool->long_term_buff); | |
682 | } | |
683 | ||
c657e32c NF |
684 | static void release_tx_pools(struct ibmvnic_adapter *adapter) |
685 | { | |
896d8695 | 686 | int i; |
c657e32c NF |
687 | |
688 | if (!adapter->tx_pool) | |
689 | return; | |
690 | ||
82e3be32 | 691 | for (i = 0; i < adapter->num_active_tx_pools; i++) { |
fb79421c TF |
692 | release_one_tx_pool(adapter, &adapter->tx_pool[i]); |
693 | release_one_tx_pool(adapter, &adapter->tso_pool[i]); | |
c657e32c NF |
694 | } |
695 | ||
696 | kfree(adapter->tx_pool); | |
697 | adapter->tx_pool = NULL; | |
fb79421c TF |
698 | kfree(adapter->tso_pool); |
699 | adapter->tso_pool = NULL; | |
82e3be32 | 700 | adapter->num_active_tx_pools = 0; |
c657e32c NF |
701 | } |
702 | ||
3205306c TF |
703 | static int init_one_tx_pool(struct net_device *netdev, |
704 | struct ibmvnic_tx_pool *tx_pool, | |
705 | int num_entries, int buf_size) | |
706 | { | |
707 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
708 | int i; | |
709 | ||
710 | tx_pool->tx_buff = kcalloc(num_entries, | |
711 | sizeof(struct ibmvnic_tx_buff), | |
712 | GFP_KERNEL); | |
713 | if (!tx_pool->tx_buff) | |
714 | return -1; | |
715 | ||
716 | if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, | |
717 | num_entries * buf_size)) | |
718 | return -1; | |
719 | ||
720 | tx_pool->free_map = kcalloc(num_entries, sizeof(int), GFP_KERNEL); | |
721 | if (!tx_pool->free_map) | |
722 | return -1; | |
723 | ||
724 | for (i = 0; i < num_entries; i++) | |
725 | tx_pool->free_map[i] = i; | |
726 | ||
727 | tx_pool->consumer_index = 0; | |
728 | tx_pool->producer_index = 0; | |
729 | tx_pool->num_buffers = num_entries; | |
730 | tx_pool->buf_size = buf_size; | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
c657e32c NF |
735 | static int init_tx_pools(struct net_device *netdev) |
736 | { | |
737 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
c657e32c | 738 | int tx_subcrqs; |
3205306c | 739 | int i, rc; |
c657e32c NF |
740 | |
741 | tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); | |
742 | adapter->tx_pool = kcalloc(tx_subcrqs, | |
743 | sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
744 | if (!adapter->tx_pool) | |
745 | return -1; | |
746 | ||
3205306c TF |
747 | adapter->tso_pool = kcalloc(tx_subcrqs, |
748 | sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); | |
749 | if (!adapter->tso_pool) | |
750 | return -1; | |
751 | ||
82e3be32 NF |
752 | adapter->num_active_tx_pools = tx_subcrqs; |
753 | ||
c657e32c | 754 | for (i = 0; i < tx_subcrqs; i++) { |
3205306c TF |
755 | rc = init_one_tx_pool(netdev, &adapter->tx_pool[i], |
756 | adapter->req_tx_entries_per_subcrq, | |
757 | adapter->req_mtu + VLAN_HLEN); | |
758 | if (rc) { | |
c657e32c | 759 | release_tx_pools(adapter); |
3205306c | 760 | return rc; |
fdb06105 TF |
761 | } |
762 | ||
7c940b1a TF |
763 | rc = init_one_tx_pool(netdev, &adapter->tso_pool[i], |
764 | IBMVNIC_TSO_BUFS, | |
765 | IBMVNIC_TSO_BUF_SZ); | |
3205306c | 766 | if (rc) { |
c657e32c | 767 | release_tx_pools(adapter); |
3205306c | 768 | return rc; |
c657e32c | 769 | } |
c657e32c NF |
770 | } |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
d944c3d6 JA |
775 | static void ibmvnic_napi_enable(struct ibmvnic_adapter *adapter) |
776 | { | |
777 | int i; | |
778 | ||
779 | if (adapter->napi_enabled) | |
780 | return; | |
781 | ||
782 | for (i = 0; i < adapter->req_rx_queues; i++) | |
783 | napi_enable(&adapter->napi[i]); | |
784 | ||
785 | adapter->napi_enabled = true; | |
786 | } | |
787 | ||
788 | static void ibmvnic_napi_disable(struct ibmvnic_adapter *adapter) | |
789 | { | |
790 | int i; | |
791 | ||
792 | if (!adapter->napi_enabled) | |
793 | return; | |
794 | ||
d1cf33d9 NF |
795 | for (i = 0; i < adapter->req_rx_queues; i++) { |
796 | netdev_dbg(adapter->netdev, "Disabling napi[%d]\n", i); | |
d944c3d6 | 797 | napi_disable(&adapter->napi[i]); |
d1cf33d9 | 798 | } |
d944c3d6 JA |
799 | |
800 | adapter->napi_enabled = false; | |
801 | } | |
802 | ||
86f669b2 NF |
803 | static int init_napi(struct ibmvnic_adapter *adapter) |
804 | { | |
805 | int i; | |
806 | ||
807 | adapter->napi = kcalloc(adapter->req_rx_queues, | |
808 | sizeof(struct napi_struct), GFP_KERNEL); | |
809 | if (!adapter->napi) | |
810 | return -ENOMEM; | |
811 | ||
812 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
813 | netdev_dbg(adapter->netdev, "Adding napi[%d]\n", i); | |
814 | netif_napi_add(adapter->netdev, &adapter->napi[i], | |
815 | ibmvnic_poll, NAPI_POLL_WEIGHT); | |
816 | } | |
817 | ||
82e3be32 | 818 | adapter->num_active_rx_napi = adapter->req_rx_queues; |
86f669b2 NF |
819 | return 0; |
820 | } | |
821 | ||
822 | static void release_napi(struct ibmvnic_adapter *adapter) | |
823 | { | |
824 | int i; | |
825 | ||
826 | if (!adapter->napi) | |
827 | return; | |
828 | ||
82e3be32 | 829 | for (i = 0; i < adapter->num_active_rx_napi; i++) { |
390de194 WY |
830 | netdev_dbg(adapter->netdev, "Releasing napi[%d]\n", i); |
831 | netif_napi_del(&adapter->napi[i]); | |
86f669b2 NF |
832 | } |
833 | ||
834 | kfree(adapter->napi); | |
835 | adapter->napi = NULL; | |
82e3be32 | 836 | adapter->num_active_rx_napi = 0; |
c3f22415 | 837 | adapter->napi_enabled = false; |
86f669b2 NF |
838 | } |
839 | ||
a57a5d25 | 840 | static int ibmvnic_login(struct net_device *netdev) |
032c5e82 TF |
841 | { |
842 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
bd0b6723 | 843 | unsigned long timeout = msecs_to_jiffies(30000); |
64d92aa2 | 844 | int retry_count = 0; |
eb110410 | 845 | bool retry; |
4d96f12a | 846 | int rc; |
032c5e82 | 847 | |
bd0b6723 | 848 | do { |
eb110410 | 849 | retry = false; |
64d92aa2 NF |
850 | if (retry_count > IBMVNIC_MAX_QUEUES) { |
851 | netdev_warn(netdev, "Login attempts exceeded\n"); | |
852 | return -1; | |
853 | } | |
854 | ||
855 | adapter->init_done_rc = 0; | |
856 | reinit_completion(&adapter->init_done); | |
857 | rc = send_login(adapter); | |
858 | if (rc) { | |
859 | netdev_warn(netdev, "Unable to login\n"); | |
860 | return rc; | |
861 | } | |
862 | ||
863 | if (!wait_for_completion_timeout(&adapter->init_done, | |
864 | timeout)) { | |
865 | netdev_warn(netdev, "Login timed out\n"); | |
866 | return -1; | |
867 | } | |
868 | ||
869 | if (adapter->init_done_rc == PARTIALSUCCESS) { | |
870 | retry_count++; | |
d7c0ef36 | 871 | release_sub_crqs(adapter, 1); |
bd0b6723 | 872 | |
eb110410 TF |
873 | retry = true; |
874 | netdev_dbg(netdev, | |
875 | "Received partial success, retrying...\n"); | |
64d92aa2 | 876 | adapter->init_done_rc = 0; |
bd0b6723 JA |
877 | reinit_completion(&adapter->init_done); |
878 | send_cap_queries(adapter); | |
879 | if (!wait_for_completion_timeout(&adapter->init_done, | |
880 | timeout)) { | |
64d92aa2 NF |
881 | netdev_warn(netdev, |
882 | "Capabilities query timed out\n"); | |
bd0b6723 JA |
883 | return -1; |
884 | } | |
64d92aa2 | 885 | |
4d96f12a TF |
886 | rc = init_sub_crqs(adapter); |
887 | if (rc) { | |
64d92aa2 NF |
888 | netdev_warn(netdev, |
889 | "SCRQ initialization failed\n"); | |
4d96f12a TF |
890 | return -1; |
891 | } | |
64d92aa2 | 892 | |
4d96f12a TF |
893 | rc = init_sub_crq_irqs(adapter); |
894 | if (rc) { | |
64d92aa2 NF |
895 | netdev_warn(netdev, |
896 | "SCRQ irq initialization failed\n"); | |
4d96f12a TF |
897 | return -1; |
898 | } | |
64d92aa2 NF |
899 | } else if (adapter->init_done_rc) { |
900 | netdev_warn(netdev, "Adapter login failed\n"); | |
bd0b6723 JA |
901 | return -1; |
902 | } | |
eb110410 | 903 | } while (retry); |
bd0b6723 | 904 | |
62740e97 | 905 | __ibmvnic_set_mac(netdev, adapter->mac_addr); |
3d166130 | 906 | |
a57a5d25 JA |
907 | return 0; |
908 | } | |
909 | ||
34f0f4e3 TF |
910 | static void release_login_buffer(struct ibmvnic_adapter *adapter) |
911 | { | |
912 | kfree(adapter->login_buf); | |
913 | adapter->login_buf = NULL; | |
914 | } | |
915 | ||
916 | static void release_login_rsp_buffer(struct ibmvnic_adapter *adapter) | |
917 | { | |
918 | kfree(adapter->login_rsp_buf); | |
919 | adapter->login_rsp_buf = NULL; | |
920 | } | |
921 | ||
1b8955ee NF |
922 | static void release_resources(struct ibmvnic_adapter *adapter) |
923 | { | |
4e6759be DANR |
924 | release_vpd_data(adapter); |
925 | ||
1b8955ee NF |
926 | release_tx_pools(adapter); |
927 | release_rx_pools(adapter); | |
928 | ||
86f669b2 | 929 | release_napi(adapter); |
34f0f4e3 | 930 | release_login_rsp_buffer(adapter); |
1b8955ee NF |
931 | } |
932 | ||
53da09e9 NF |
933 | static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state) |
934 | { | |
935 | struct net_device *netdev = adapter->netdev; | |
936 | unsigned long timeout = msecs_to_jiffies(30000); | |
937 | union ibmvnic_crq crq; | |
938 | bool resend; | |
939 | int rc; | |
940 | ||
d1cf33d9 NF |
941 | netdev_dbg(netdev, "setting link state %d\n", link_state); |
942 | ||
53da09e9 NF |
943 | memset(&crq, 0, sizeof(crq)); |
944 | crq.logical_link_state.first = IBMVNIC_CRQ_CMD; | |
945 | crq.logical_link_state.cmd = LOGICAL_LINK_STATE; | |
946 | crq.logical_link_state.link_state = link_state; | |
947 | ||
948 | do { | |
949 | resend = false; | |
950 | ||
951 | reinit_completion(&adapter->init_done); | |
952 | rc = ibmvnic_send_crq(adapter, &crq); | |
953 | if (rc) { | |
954 | netdev_err(netdev, "Failed to set link state\n"); | |
955 | return rc; | |
956 | } | |
957 | ||
958 | if (!wait_for_completion_timeout(&adapter->init_done, | |
959 | timeout)) { | |
960 | netdev_err(netdev, "timeout setting link state\n"); | |
961 | return -1; | |
962 | } | |
963 | ||
964 | if (adapter->init_done_rc == 1) { | |
965 | /* Partuial success, delay and re-send */ | |
966 | mdelay(1000); | |
967 | resend = true; | |
ab5ec33b TF |
968 | } else if (adapter->init_done_rc) { |
969 | netdev_warn(netdev, "Unable to set link state, rc=%d\n", | |
970 | adapter->init_done_rc); | |
971 | return adapter->init_done_rc; | |
53da09e9 NF |
972 | } |
973 | } while (resend); | |
974 | ||
975 | return 0; | |
976 | } | |
977 | ||
7f3c6e6b TF |
978 | static int set_real_num_queues(struct net_device *netdev) |
979 | { | |
980 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
981 | int rc; | |
982 | ||
d1cf33d9 NF |
983 | netdev_dbg(netdev, "Setting real tx/rx queues (%llx/%llx)\n", |
984 | adapter->req_tx_queues, adapter->req_rx_queues); | |
985 | ||
7f3c6e6b TF |
986 | rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues); |
987 | if (rc) { | |
988 | netdev_err(netdev, "failed to set the number of tx queues\n"); | |
989 | return rc; | |
990 | } | |
991 | ||
992 | rc = netif_set_real_num_rx_queues(netdev, adapter->req_rx_queues); | |
993 | if (rc) | |
994 | netdev_err(netdev, "failed to set the number of rx queues\n"); | |
995 | ||
996 | return rc; | |
997 | } | |
998 | ||
4e6759be DANR |
999 | static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter) |
1000 | { | |
1001 | struct device *dev = &adapter->vdev->dev; | |
1002 | union ibmvnic_crq crq; | |
4e6759be | 1003 | int len = 0; |
9c4eaabd | 1004 | int rc; |
4e6759be DANR |
1005 | |
1006 | if (adapter->vpd->buff) | |
1007 | len = adapter->vpd->len; | |
1008 | ||
ff25dcb9 TF |
1009 | mutex_lock(&adapter->fw_lock); |
1010 | adapter->fw_done_rc = 0; | |
070eca95 | 1011 | reinit_completion(&adapter->fw_done); |
ff25dcb9 | 1012 | |
4e6759be DANR |
1013 | crq.get_vpd_size.first = IBMVNIC_CRQ_CMD; |
1014 | crq.get_vpd_size.cmd = GET_VPD_SIZE; | |
9c4eaabd | 1015 | rc = ibmvnic_send_crq(adapter, &crq); |
ff25dcb9 TF |
1016 | if (rc) { |
1017 | mutex_unlock(&adapter->fw_lock); | |
9c4eaabd | 1018 | return rc; |
ff25dcb9 | 1019 | } |
476d96ca TF |
1020 | |
1021 | rc = ibmvnic_wait_for_completion(adapter, &adapter->fw_done, 10000); | |
1022 | if (rc) { | |
1023 | dev_err(dev, "Could not retrieve VPD size, rc = %d\n", rc); | |
ff25dcb9 | 1024 | mutex_unlock(&adapter->fw_lock); |
476d96ca TF |
1025 | return rc; |
1026 | } | |
ff25dcb9 | 1027 | mutex_unlock(&adapter->fw_lock); |
4e6759be DANR |
1028 | |
1029 | if (!adapter->vpd->len) | |
1030 | return -ENODATA; | |
1031 | ||
1032 | if (!adapter->vpd->buff) | |
1033 | adapter->vpd->buff = kzalloc(adapter->vpd->len, GFP_KERNEL); | |
1034 | else if (adapter->vpd->len != len) | |
1035 | adapter->vpd->buff = | |
1036 | krealloc(adapter->vpd->buff, | |
1037 | adapter->vpd->len, GFP_KERNEL); | |
1038 | ||
1039 | if (!adapter->vpd->buff) { | |
1040 | dev_err(dev, "Could allocate VPD buffer\n"); | |
1041 | return -ENOMEM; | |
1042 | } | |
1043 | ||
1044 | adapter->vpd->dma_addr = | |
1045 | dma_map_single(dev, adapter->vpd->buff, adapter->vpd->len, | |
1046 | DMA_FROM_DEVICE); | |
f743106e | 1047 | if (dma_mapping_error(dev, adapter->vpd->dma_addr)) { |
4e6759be DANR |
1048 | dev_err(dev, "Could not map VPD buffer\n"); |
1049 | kfree(adapter->vpd->buff); | |
b0992eca | 1050 | adapter->vpd->buff = NULL; |
4e6759be DANR |
1051 | return -ENOMEM; |
1052 | } | |
1053 | ||
ff25dcb9 TF |
1054 | mutex_lock(&adapter->fw_lock); |
1055 | adapter->fw_done_rc = 0; | |
4e6759be | 1056 | reinit_completion(&adapter->fw_done); |
ff25dcb9 | 1057 | |
4e6759be DANR |
1058 | crq.get_vpd.first = IBMVNIC_CRQ_CMD; |
1059 | crq.get_vpd.cmd = GET_VPD; | |
1060 | crq.get_vpd.ioba = cpu_to_be32(adapter->vpd->dma_addr); | |
1061 | crq.get_vpd.len = cpu_to_be32((u32)adapter->vpd->len); | |
9c4eaabd TF |
1062 | rc = ibmvnic_send_crq(adapter, &crq); |
1063 | if (rc) { | |
1064 | kfree(adapter->vpd->buff); | |
1065 | adapter->vpd->buff = NULL; | |
ff25dcb9 | 1066 | mutex_unlock(&adapter->fw_lock); |
9c4eaabd TF |
1067 | return rc; |
1068 | } | |
476d96ca TF |
1069 | |
1070 | rc = ibmvnic_wait_for_completion(adapter, &adapter->fw_done, 10000); | |
1071 | if (rc) { | |
1072 | dev_err(dev, "Unable to retrieve VPD, rc = %d\n", rc); | |
1073 | kfree(adapter->vpd->buff); | |
1074 | adapter->vpd->buff = NULL; | |
ff25dcb9 | 1075 | mutex_unlock(&adapter->fw_lock); |
476d96ca TF |
1076 | return rc; |
1077 | } | |
4e6759be | 1078 | |
ff25dcb9 | 1079 | mutex_unlock(&adapter->fw_lock); |
4e6759be DANR |
1080 | return 0; |
1081 | } | |
1082 | ||
bfc32f29 | 1083 | static int init_resources(struct ibmvnic_adapter *adapter) |
a57a5d25 | 1084 | { |
bfc32f29 | 1085 | struct net_device *netdev = adapter->netdev; |
86f669b2 | 1086 | int rc; |
a57a5d25 | 1087 | |
7f3c6e6b TF |
1088 | rc = set_real_num_queues(netdev); |
1089 | if (rc) | |
1090 | return rc; | |
bd0b6723 | 1091 | |
4e6759be DANR |
1092 | adapter->vpd = kzalloc(sizeof(*adapter->vpd), GFP_KERNEL); |
1093 | if (!adapter->vpd) | |
1094 | return -ENOMEM; | |
1095 | ||
69d08dcb JA |
1096 | /* Vital Product Data (VPD) */ |
1097 | rc = ibmvnic_get_vpd(adapter); | |
1098 | if (rc) { | |
1099 | netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n"); | |
1100 | return rc; | |
1101 | } | |
1102 | ||
032c5e82 | 1103 | adapter->map_id = 1; |
bfc32f29 | 1104 | |
86f669b2 NF |
1105 | rc = init_napi(adapter); |
1106 | if (rc) | |
1107 | return rc; | |
032c5e82 | 1108 | |
032c5e82 | 1109 | send_map_query(adapter); |
0ffe2cb7 NF |
1110 | |
1111 | rc = init_rx_pools(netdev); | |
1112 | if (rc) | |
bfc32f29 | 1113 | return rc; |
032c5e82 | 1114 | |
c657e32c | 1115 | rc = init_tx_pools(netdev); |
bfc32f29 NF |
1116 | return rc; |
1117 | } | |
1118 | ||
ed651a10 | 1119 | static int __ibmvnic_open(struct net_device *netdev) |
bfc32f29 NF |
1120 | { |
1121 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
ed651a10 | 1122 | enum vnic_state prev_state = adapter->state; |
bfc32f29 NF |
1123 | int i, rc; |
1124 | ||
90c8014c | 1125 | adapter->state = VNIC_OPENING; |
032c5e82 | 1126 | replenish_pools(adapter); |
d944c3d6 | 1127 | ibmvnic_napi_enable(adapter); |
bfc32f29 | 1128 | |
032c5e82 TF |
1129 | /* We're ready to receive frames, enable the sub-crq interrupts and |
1130 | * set the logical link state to up | |
1131 | */ | |
ed651a10 | 1132 | for (i = 0; i < adapter->req_rx_queues; i++) { |
d1cf33d9 | 1133 | netdev_dbg(netdev, "Enabling rx_scrq[%d] irq\n", i); |
ed651a10 NF |
1134 | if (prev_state == VNIC_CLOSED) |
1135 | enable_irq(adapter->rx_scrq[i]->irq); | |
f23e0643 | 1136 | enable_scrq_irq(adapter, adapter->rx_scrq[i]); |
ed651a10 | 1137 | } |
032c5e82 | 1138 | |
ed651a10 | 1139 | for (i = 0; i < adapter->req_tx_queues; i++) { |
d1cf33d9 | 1140 | netdev_dbg(netdev, "Enabling tx_scrq[%d] irq\n", i); |
ed651a10 NF |
1141 | if (prev_state == VNIC_CLOSED) |
1142 | enable_irq(adapter->tx_scrq[i]->irq); | |
f23e0643 | 1143 | enable_scrq_irq(adapter, adapter->tx_scrq[i]); |
ed651a10 | 1144 | } |
032c5e82 | 1145 | |
53da09e9 | 1146 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_UP); |
bfc32f29 NF |
1147 | if (rc) { |
1148 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1149 | napi_disable(&adapter->napi[i]); | |
1150 | release_resources(adapter); | |
ed651a10 | 1151 | return rc; |
bfc32f29 | 1152 | } |
032c5e82 | 1153 | |
ed651a10 NF |
1154 | netif_tx_start_all_queues(netdev); |
1155 | ||
1156 | if (prev_state == VNIC_CLOSED) { | |
1157 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1158 | napi_schedule(&adapter->napi[i]); | |
1159 | } | |
1160 | ||
1161 | adapter->state = VNIC_OPEN; | |
1162 | return rc; | |
1163 | } | |
1164 | ||
1165 | static int ibmvnic_open(struct net_device *netdev) | |
1166 | { | |
1167 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
69d08dcb | 1168 | int rc; |
ed651a10 | 1169 | |
5a18e1e0 TF |
1170 | /* If device failover is pending, just set device state and return. |
1171 | * Device operation will be handled by reset routine. | |
1172 | */ | |
1173 | if (adapter->failover_pending) { | |
1174 | adapter->state = VNIC_OPEN; | |
1175 | return 0; | |
1176 | } | |
1177 | ||
ed651a10 NF |
1178 | if (adapter->state != VNIC_CLOSED) { |
1179 | rc = ibmvnic_login(netdev); | |
a5681e20 | 1180 | if (rc) |
ed651a10 | 1181 | return rc; |
ed651a10 NF |
1182 | |
1183 | rc = init_resources(adapter); | |
1184 | if (rc) { | |
1185 | netdev_err(netdev, "failed to initialize resources\n"); | |
1186 | release_resources(adapter); | |
ed651a10 NF |
1187 | return rc; |
1188 | } | |
1189 | } | |
1190 | ||
1191 | rc = __ibmvnic_open(netdev); | |
4e6759be | 1192 | |
bfc32f29 | 1193 | return rc; |
032c5e82 TF |
1194 | } |
1195 | ||
d0869c00 TF |
1196 | static void clean_rx_pools(struct ibmvnic_adapter *adapter) |
1197 | { | |
1198 | struct ibmvnic_rx_pool *rx_pool; | |
637f81d1 | 1199 | struct ibmvnic_rx_buff *rx_buff; |
d0869c00 TF |
1200 | u64 rx_entries; |
1201 | int rx_scrqs; | |
1202 | int i, j; | |
1203 | ||
1204 | if (!adapter->rx_pool) | |
1205 | return; | |
1206 | ||
660e309d | 1207 | rx_scrqs = adapter->num_active_rx_pools; |
d0869c00 TF |
1208 | rx_entries = adapter->req_rx_add_entries_per_subcrq; |
1209 | ||
1210 | /* Free any remaining skbs in the rx buffer pools */ | |
1211 | for (i = 0; i < rx_scrqs; i++) { | |
1212 | rx_pool = &adapter->rx_pool[i]; | |
637f81d1 | 1213 | if (!rx_pool || !rx_pool->rx_buff) |
d0869c00 TF |
1214 | continue; |
1215 | ||
1216 | netdev_dbg(adapter->netdev, "Cleaning rx_pool[%d]\n", i); | |
1217 | for (j = 0; j < rx_entries; j++) { | |
637f81d1 TF |
1218 | rx_buff = &rx_pool->rx_buff[j]; |
1219 | if (rx_buff && rx_buff->skb) { | |
1220 | dev_kfree_skb_any(rx_buff->skb); | |
1221 | rx_buff->skb = NULL; | |
d0869c00 TF |
1222 | } |
1223 | } | |
1224 | } | |
1225 | } | |
1226 | ||
e9e1e978 TF |
1227 | static void clean_one_tx_pool(struct ibmvnic_adapter *adapter, |
1228 | struct ibmvnic_tx_pool *tx_pool) | |
b41b83e9 | 1229 | { |
637f81d1 | 1230 | struct ibmvnic_tx_buff *tx_buff; |
b41b83e9 | 1231 | u64 tx_entries; |
e9e1e978 TF |
1232 | int i; |
1233 | ||
050e85c9 | 1234 | if (!tx_pool || !tx_pool->tx_buff) |
e9e1e978 TF |
1235 | return; |
1236 | ||
1237 | tx_entries = tx_pool->num_buffers; | |
1238 | ||
1239 | for (i = 0; i < tx_entries; i++) { | |
1240 | tx_buff = &tx_pool->tx_buff[i]; | |
1241 | if (tx_buff && tx_buff->skb) { | |
1242 | dev_kfree_skb_any(tx_buff->skb); | |
1243 | tx_buff->skb = NULL; | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | static void clean_tx_pools(struct ibmvnic_adapter *adapter) | |
1249 | { | |
b41b83e9 | 1250 | int tx_scrqs; |
e9e1e978 | 1251 | int i; |
b41b83e9 | 1252 | |
e9e1e978 | 1253 | if (!adapter->tx_pool || !adapter->tso_pool) |
b41b83e9 NF |
1254 | return; |
1255 | ||
660e309d | 1256 | tx_scrqs = adapter->num_active_tx_pools; |
b41b83e9 NF |
1257 | |
1258 | /* Free any remaining skbs in the tx buffer pools */ | |
1259 | for (i = 0; i < tx_scrqs; i++) { | |
d1cf33d9 | 1260 | netdev_dbg(adapter->netdev, "Cleaning tx_pool[%d]\n", i); |
e9e1e978 TF |
1261 | clean_one_tx_pool(adapter, &adapter->tx_pool[i]); |
1262 | clean_one_tx_pool(adapter, &adapter->tso_pool[i]); | |
b41b83e9 NF |
1263 | } |
1264 | } | |
1265 | ||
6095e590 | 1266 | static void ibmvnic_disable_irqs(struct ibmvnic_adapter *adapter) |
ea5509f5 | 1267 | { |
6095e590 | 1268 | struct net_device *netdev = adapter->netdev; |
ea5509f5 JA |
1269 | int i; |
1270 | ||
46293b94 NF |
1271 | if (adapter->tx_scrq) { |
1272 | for (i = 0; i < adapter->req_tx_queues; i++) | |
d1cf33d9 | 1273 | if (adapter->tx_scrq[i]->irq) { |
f873866a | 1274 | netdev_dbg(netdev, |
d1cf33d9 | 1275 | "Disabling tx_scrq[%d] irq\n", i); |
f23e0643 | 1276 | disable_scrq_irq(adapter, adapter->tx_scrq[i]); |
46293b94 | 1277 | disable_irq(adapter->tx_scrq[i]->irq); |
d1cf33d9 | 1278 | } |
46293b94 NF |
1279 | } |
1280 | ||
46293b94 NF |
1281 | if (adapter->rx_scrq) { |
1282 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
d1cf33d9 | 1283 | if (adapter->rx_scrq[i]->irq) { |
f873866a | 1284 | netdev_dbg(netdev, |
d1cf33d9 | 1285 | "Disabling rx_scrq[%d] irq\n", i); |
f23e0643 | 1286 | disable_scrq_irq(adapter, adapter->rx_scrq[i]); |
46293b94 | 1287 | disable_irq(adapter->rx_scrq[i]->irq); |
d1cf33d9 | 1288 | } |
46293b94 NF |
1289 | } |
1290 | } | |
6095e590 JA |
1291 | } |
1292 | ||
1293 | static void ibmvnic_cleanup(struct net_device *netdev) | |
1294 | { | |
1295 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1296 | ||
1297 | /* ensure that transmissions are stopped if called by do_reset */ | |
7ed5b31f | 1298 | if (test_bit(0, &adapter->resetting)) |
6095e590 JA |
1299 | netif_tx_disable(netdev); |
1300 | else | |
1301 | netif_tx_stop_all_queues(netdev); | |
1302 | ||
1303 | ibmvnic_napi_disable(adapter); | |
1304 | ibmvnic_disable_irqs(adapter); | |
1305 | ||
d0869c00 | 1306 | clean_rx_pools(adapter); |
10f76215 | 1307 | clean_tx_pools(adapter); |
01d9bd79 TF |
1308 | } |
1309 | ||
1310 | static int __ibmvnic_close(struct net_device *netdev) | |
1311 | { | |
1312 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1313 | int rc = 0; | |
1314 | ||
1315 | adapter->state = VNIC_CLOSING; | |
1316 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN); | |
1317 | if (rc) | |
1318 | return rc; | |
90c8014c | 1319 | adapter->state = VNIC_CLOSED; |
01d9bd79 | 1320 | return 0; |
032c5e82 TF |
1321 | } |
1322 | ||
ed651a10 NF |
1323 | static int ibmvnic_close(struct net_device *netdev) |
1324 | { | |
1325 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1326 | int rc; | |
1327 | ||
5a18e1e0 TF |
1328 | /* If device failover is pending, just set device state and return. |
1329 | * Device operation will be handled by reset routine. | |
1330 | */ | |
1331 | if (adapter->failover_pending) { | |
1332 | adapter->state = VNIC_CLOSED; | |
1333 | return 0; | |
1334 | } | |
1335 | ||
ed651a10 | 1336 | rc = __ibmvnic_close(netdev); |
30f79625 | 1337 | ibmvnic_cleanup(netdev); |
ed651a10 NF |
1338 | |
1339 | return rc; | |
1340 | } | |
1341 | ||
ad7775dc TF |
1342 | /** |
1343 | * build_hdr_data - creates L2/L3/L4 header data buffer | |
1344 | * @hdr_field - bitfield determining needed headers | |
1345 | * @skb - socket buffer | |
1346 | * @hdr_len - array of header lengths | |
1347 | * @tot_len - total length of data | |
1348 | * | |
1349 | * Reads hdr_field to determine which headers are needed by firmware. | |
1350 | * Builds a buffer containing these headers. Saves individual header | |
1351 | * lengths and total buffer length to be used to build descriptors. | |
1352 | */ | |
1353 | static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, | |
1354 | int *hdr_len, u8 *hdr_data) | |
1355 | { | |
1356 | int len = 0; | |
1357 | u8 *hdr; | |
1358 | ||
da75e3b6 TF |
1359 | if (skb_vlan_tagged(skb) && !skb_vlan_tag_present(skb)) |
1360 | hdr_len[0] = sizeof(struct vlan_ethhdr); | |
1361 | else | |
1362 | hdr_len[0] = sizeof(struct ethhdr); | |
ad7775dc TF |
1363 | |
1364 | if (skb->protocol == htons(ETH_P_IP)) { | |
1365 | hdr_len[1] = ip_hdr(skb)->ihl * 4; | |
1366 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
1367 | hdr_len[2] = tcp_hdrlen(skb); | |
1368 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
1369 | hdr_len[2] = sizeof(struct udphdr); | |
1370 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
1371 | hdr_len[1] = sizeof(struct ipv6hdr); | |
1372 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
1373 | hdr_len[2] = tcp_hdrlen(skb); | |
1374 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) | |
1375 | hdr_len[2] = sizeof(struct udphdr); | |
4eb50ceb TF |
1376 | } else if (skb->protocol == htons(ETH_P_ARP)) { |
1377 | hdr_len[1] = arp_hdr_len(skb->dev); | |
1378 | hdr_len[2] = 0; | |
ad7775dc TF |
1379 | } |
1380 | ||
1381 | memset(hdr_data, 0, 120); | |
1382 | if ((hdr_field >> 6) & 1) { | |
1383 | hdr = skb_mac_header(skb); | |
1384 | memcpy(hdr_data, hdr, hdr_len[0]); | |
1385 | len += hdr_len[0]; | |
1386 | } | |
1387 | ||
1388 | if ((hdr_field >> 5) & 1) { | |
1389 | hdr = skb_network_header(skb); | |
1390 | memcpy(hdr_data + len, hdr, hdr_len[1]); | |
1391 | len += hdr_len[1]; | |
1392 | } | |
1393 | ||
1394 | if ((hdr_field >> 4) & 1) { | |
1395 | hdr = skb_transport_header(skb); | |
1396 | memcpy(hdr_data + len, hdr, hdr_len[2]); | |
1397 | len += hdr_len[2]; | |
1398 | } | |
1399 | return len; | |
1400 | } | |
1401 | ||
1402 | /** | |
1403 | * create_hdr_descs - create header and header extension descriptors | |
1404 | * @hdr_field - bitfield determining needed headers | |
1405 | * @data - buffer containing header data | |
1406 | * @len - length of data buffer | |
1407 | * @hdr_len - array of individual header lengths | |
1408 | * @scrq_arr - descriptor array | |
1409 | * | |
1410 | * Creates header and, if needed, header extension descriptors and | |
1411 | * places them in a descriptor array, scrq_arr | |
1412 | */ | |
1413 | ||
2de09681 TF |
1414 | static int create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, |
1415 | union sub_crq *scrq_arr) | |
ad7775dc TF |
1416 | { |
1417 | union sub_crq hdr_desc; | |
1418 | int tmp_len = len; | |
2de09681 | 1419 | int num_descs = 0; |
ad7775dc TF |
1420 | u8 *data, *cur; |
1421 | int tmp; | |
1422 | ||
1423 | while (tmp_len > 0) { | |
1424 | cur = hdr_data + len - tmp_len; | |
1425 | ||
1426 | memset(&hdr_desc, 0, sizeof(hdr_desc)); | |
1427 | if (cur != hdr_data) { | |
1428 | data = hdr_desc.hdr_ext.data; | |
1429 | tmp = tmp_len > 29 ? 29 : tmp_len; | |
1430 | hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; | |
1431 | hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; | |
1432 | hdr_desc.hdr_ext.len = tmp; | |
1433 | } else { | |
1434 | data = hdr_desc.hdr.data; | |
1435 | tmp = tmp_len > 24 ? 24 : tmp_len; | |
1436 | hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; | |
1437 | hdr_desc.hdr.type = IBMVNIC_HDR_DESC; | |
1438 | hdr_desc.hdr.len = tmp; | |
1439 | hdr_desc.hdr.l2_len = (u8)hdr_len[0]; | |
1440 | hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); | |
1441 | hdr_desc.hdr.l4_len = (u8)hdr_len[2]; | |
1442 | hdr_desc.hdr.flag = hdr_field << 1; | |
1443 | } | |
1444 | memcpy(data, cur, tmp); | |
1445 | tmp_len -= tmp; | |
1446 | *scrq_arr = hdr_desc; | |
1447 | scrq_arr++; | |
2de09681 | 1448 | num_descs++; |
ad7775dc | 1449 | } |
2de09681 TF |
1450 | |
1451 | return num_descs; | |
ad7775dc TF |
1452 | } |
1453 | ||
1454 | /** | |
1455 | * build_hdr_descs_arr - build a header descriptor array | |
1456 | * @skb - socket buffer | |
1457 | * @num_entries - number of descriptors to be sent | |
1458 | * @subcrq - first TX descriptor | |
1459 | * @hdr_field - bit field determining which headers will be sent | |
1460 | * | |
1461 | * This function will build a TX descriptor array with applicable | |
1462 | * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. | |
1463 | */ | |
1464 | ||
1465 | static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, | |
1466 | int *num_entries, u8 hdr_field) | |
1467 | { | |
1468 | int hdr_len[3] = {0, 0, 0}; | |
2de09681 | 1469 | int tot_len; |
ad7775dc TF |
1470 | u8 *hdr_data = txbuff->hdr_data; |
1471 | ||
1472 | tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, | |
1473 | txbuff->hdr_data); | |
2de09681 | 1474 | *num_entries += create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, |
ad7775dc TF |
1475 | txbuff->indir_arr + 1); |
1476 | } | |
1477 | ||
1f247a6f TF |
1478 | static int ibmvnic_xmit_workarounds(struct sk_buff *skb, |
1479 | struct net_device *netdev) | |
1480 | { | |
1481 | /* For some backing devices, mishandling of small packets | |
1482 | * can result in a loss of connection or TX stall. Device | |
1483 | * architects recommend that no packet should be smaller | |
1484 | * than the minimum MTU value provided to the driver, so | |
1485 | * pad any packets to that length | |
1486 | */ | |
1487 | if (skb->len < netdev->min_mtu) | |
1488 | return skb_put_padto(skb, netdev->min_mtu); | |
7083a45a TF |
1489 | |
1490 | return 0; | |
1f247a6f TF |
1491 | } |
1492 | ||
94b2bb28 | 1493 | static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) |
032c5e82 TF |
1494 | { |
1495 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1496 | int queue_num = skb_get_queue_mapping(skb); | |
ad7775dc | 1497 | u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; |
032c5e82 TF |
1498 | struct device *dev = &adapter->vdev->dev; |
1499 | struct ibmvnic_tx_buff *tx_buff = NULL; | |
142c0ac4 | 1500 | struct ibmvnic_sub_crq_queue *tx_scrq; |
032c5e82 TF |
1501 | struct ibmvnic_tx_pool *tx_pool; |
1502 | unsigned int tx_send_failed = 0; | |
1503 | unsigned int tx_map_failed = 0; | |
1504 | unsigned int tx_dropped = 0; | |
1505 | unsigned int tx_packets = 0; | |
1506 | unsigned int tx_bytes = 0; | |
1507 | dma_addr_t data_dma_addr; | |
1508 | struct netdev_queue *txq; | |
032c5e82 TF |
1509 | unsigned long lpar_rc; |
1510 | union sub_crq tx_crq; | |
1511 | unsigned int offset; | |
ad7775dc | 1512 | int num_entries = 1; |
032c5e82 TF |
1513 | unsigned char *dst; |
1514 | u64 *handle_array; | |
1515 | int index = 0; | |
a0dca10f | 1516 | u8 proto = 0; |
94b2bb28 | 1517 | netdev_tx_t ret = NETDEV_TX_OK; |
032c5e82 | 1518 | |
7ed5b31f | 1519 | if (test_bit(0, &adapter->resetting)) { |
7f5b0308 TF |
1520 | if (!netif_subqueue_stopped(netdev, skb)) |
1521 | netif_stop_subqueue(netdev, queue_num); | |
1522 | dev_kfree_skb_any(skb); | |
1523 | ||
032c5e82 TF |
1524 | tx_send_failed++; |
1525 | tx_dropped++; | |
7f5b0308 | 1526 | ret = NETDEV_TX_OK; |
032c5e82 TF |
1527 | goto out; |
1528 | } | |
1529 | ||
7083a45a | 1530 | if (ibmvnic_xmit_workarounds(skb, netdev)) { |
1f247a6f TF |
1531 | tx_dropped++; |
1532 | tx_send_failed++; | |
1533 | ret = NETDEV_TX_OK; | |
1534 | goto out; | |
1535 | } | |
06b3e357 TF |
1536 | if (skb_is_gso(skb)) |
1537 | tx_pool = &adapter->tso_pool[queue_num]; | |
1538 | else | |
1539 | tx_pool = &adapter->tx_pool[queue_num]; | |
1f247a6f | 1540 | |
161b8a81 NF |
1541 | tx_scrq = adapter->tx_scrq[queue_num]; |
1542 | txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); | |
1543 | handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + | |
1544 | be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs)); | |
1545 | ||
032c5e82 | 1546 | index = tx_pool->free_map[tx_pool->consumer_index]; |
fdb06105 | 1547 | |
86b61a5f TF |
1548 | if (index == IBMVNIC_INVALID_MAP) { |
1549 | dev_kfree_skb_any(skb); | |
1550 | tx_send_failed++; | |
1551 | tx_dropped++; | |
1552 | ret = NETDEV_TX_OK; | |
1553 | goto out; | |
1554 | } | |
1555 | ||
1556 | tx_pool->free_map[tx_pool->consumer_index] = IBMVNIC_INVALID_MAP; | |
1557 | ||
06b3e357 TF |
1558 | offset = index * tx_pool->buf_size; |
1559 | dst = tx_pool->long_term_buff.buff + offset; | |
1560 | memset(dst, 0, tx_pool->buf_size); | |
1561 | data_dma_addr = tx_pool->long_term_buff.addr + offset; | |
032c5e82 | 1562 | |
15482056 TF |
1563 | if (skb_shinfo(skb)->nr_frags) { |
1564 | int cur, i; | |
1565 | ||
1566 | /* Copy the head */ | |
1567 | skb_copy_from_linear_data(skb, dst, skb_headlen(skb)); | |
1568 | cur = skb_headlen(skb); | |
1569 | ||
1570 | /* Copy the frags */ | |
1571 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1572 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
1573 | ||
1574 | memcpy(dst + cur, | |
1575 | page_address(skb_frag_page(frag)) + | |
b54c9d5b | 1576 | skb_frag_off(frag), skb_frag_size(frag)); |
15482056 TF |
1577 | cur += skb_frag_size(frag); |
1578 | } | |
1579 | } else { | |
1580 | skb_copy_from_linear_data(skb, dst, skb->len); | |
1581 | } | |
1582 | ||
032c5e82 | 1583 | tx_pool->consumer_index = |
06b3e357 | 1584 | (tx_pool->consumer_index + 1) % tx_pool->num_buffers; |
032c5e82 TF |
1585 | |
1586 | tx_buff = &tx_pool->tx_buff[index]; | |
1587 | tx_buff->skb = skb; | |
1588 | tx_buff->data_dma[0] = data_dma_addr; | |
1589 | tx_buff->data_len[0] = skb->len; | |
1590 | tx_buff->index = index; | |
1591 | tx_buff->pool_index = queue_num; | |
1592 | tx_buff->last_frag = true; | |
032c5e82 TF |
1593 | |
1594 | memset(&tx_crq, 0, sizeof(tx_crq)); | |
1595 | tx_crq.v1.first = IBMVNIC_CRQ_CMD; | |
1596 | tx_crq.v1.type = IBMVNIC_TX_DESC; | |
1597 | tx_crq.v1.n_crq_elem = 1; | |
1598 | tx_crq.v1.n_sge = 1; | |
1599 | tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; | |
06b3e357 | 1600 | |
fdb06105 | 1601 | if (skb_is_gso(skb)) |
06b3e357 TF |
1602 | tx_crq.v1.correlator = |
1603 | cpu_to_be32(index | IBMVNIC_TSO_POOL_MASK); | |
fdb06105 | 1604 | else |
06b3e357 TF |
1605 | tx_crq.v1.correlator = cpu_to_be32(index); |
1606 | tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); | |
032c5e82 TF |
1607 | tx_crq.v1.sge_len = cpu_to_be32(skb->len); |
1608 | tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); | |
1609 | ||
e84b4794 | 1610 | if (adapter->vlan_header_insertion && skb_vlan_tag_present(skb)) { |
032c5e82 TF |
1611 | tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; |
1612 | tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); | |
1613 | } | |
1614 | ||
1615 | if (skb->protocol == htons(ETH_P_IP)) { | |
a0dca10f TF |
1616 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; |
1617 | proto = ip_hdr(skb)->protocol; | |
1618 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
1619 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; | |
1620 | proto = ipv6_hdr(skb)->nexthdr; | |
032c5e82 TF |
1621 | } |
1622 | ||
a0dca10f TF |
1623 | if (proto == IPPROTO_TCP) |
1624 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; | |
1625 | else if (proto == IPPROTO_UDP) | |
1626 | tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; | |
1627 | ||
ad7775dc | 1628 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
032c5e82 | 1629 | tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; |
ad7775dc TF |
1630 | hdrs += 2; |
1631 | } | |
fdb06105 TF |
1632 | if (skb_is_gso(skb)) { |
1633 | tx_crq.v1.flags1 |= IBMVNIC_TX_LSO; | |
1634 | tx_crq.v1.mss = cpu_to_be16(skb_shinfo(skb)->gso_size); | |
1635 | hdrs += 2; | |
1636 | } | |
ad7775dc | 1637 | /* determine if l2/3/4 headers are sent to firmware */ |
2fa56a49 | 1638 | if ((*hdrs >> 7) & 1) { |
ad7775dc TF |
1639 | build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); |
1640 | tx_crq.v1.n_crq_elem = num_entries; | |
ecba616e | 1641 | tx_buff->num_entries = num_entries; |
ad7775dc TF |
1642 | tx_buff->indir_arr[0] = tx_crq; |
1643 | tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, | |
1644 | sizeof(tx_buff->indir_arr), | |
1645 | DMA_TO_DEVICE); | |
1646 | if (dma_mapping_error(dev, tx_buff->indir_dma)) { | |
7f5b0308 TF |
1647 | dev_kfree_skb_any(skb); |
1648 | tx_buff->skb = NULL; | |
ad7775dc TF |
1649 | if (!firmware_has_feature(FW_FEATURE_CMO)) |
1650 | dev_err(dev, "tx: unable to map descriptor array\n"); | |
1651 | tx_map_failed++; | |
1652 | tx_dropped++; | |
7f5b0308 | 1653 | ret = NETDEV_TX_OK; |
86b61a5f | 1654 | goto tx_err_out; |
ad7775dc | 1655 | } |
498cd8e4 | 1656 | lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], |
ad7775dc TF |
1657 | (u64)tx_buff->indir_dma, |
1658 | (u64)num_entries); | |
80f0fe09 TF |
1659 | dma_unmap_single(dev, tx_buff->indir_dma, |
1660 | sizeof(tx_buff->indir_arr), DMA_TO_DEVICE); | |
ad7775dc | 1661 | } else { |
ecba616e | 1662 | tx_buff->num_entries = num_entries; |
498cd8e4 JA |
1663 | lpar_rc = send_subcrq(adapter, handle_array[queue_num], |
1664 | &tx_crq); | |
ad7775dc | 1665 | } |
032c5e82 | 1666 | if (lpar_rc != H_SUCCESS) { |
2d14d379 TF |
1667 | if (lpar_rc != H_CLOSED && lpar_rc != H_PARAMETER) |
1668 | dev_err_ratelimited(dev, "tx: send failed\n"); | |
7f5b0308 TF |
1669 | dev_kfree_skb_any(skb); |
1670 | tx_buff->skb = NULL; | |
1671 | ||
5a18e1e0 TF |
1672 | if (lpar_rc == H_CLOSED || adapter->failover_pending) { |
1673 | /* Disable TX and report carrier off if queue is closed | |
1674 | * or pending failover. | |
b8c80b84 TF |
1675 | * Firmware guarantees that a signal will be sent to the |
1676 | * driver, triggering a reset or some other action. | |
1677 | */ | |
1678 | netif_tx_stop_all_queues(netdev); | |
1679 | netif_carrier_off(netdev); | |
1680 | } | |
7f5b0308 | 1681 | |
032c5e82 TF |
1682 | tx_send_failed++; |
1683 | tx_dropped++; | |
7f5b0308 | 1684 | ret = NETDEV_TX_OK; |
86b61a5f | 1685 | goto tx_err_out; |
032c5e82 | 1686 | } |
142c0ac4 | 1687 | |
ffc385b9 | 1688 | if (atomic_add_return(num_entries, &tx_scrq->used) |
58c8c0c0 | 1689 | >= adapter->req_tx_entries_per_subcrq) { |
0aecb13c | 1690 | netdev_dbg(netdev, "Stopping queue %d\n", queue_num); |
142c0ac4 TF |
1691 | netif_stop_subqueue(netdev, queue_num); |
1692 | } | |
1693 | ||
032c5e82 TF |
1694 | tx_packets++; |
1695 | tx_bytes += skb->len; | |
1696 | txq->trans_start = jiffies; | |
1697 | ret = NETDEV_TX_OK; | |
86b61a5f | 1698 | goto out; |
032c5e82 | 1699 | |
86b61a5f TF |
1700 | tx_err_out: |
1701 | /* roll back consumer index and map array*/ | |
1702 | if (tx_pool->consumer_index == 0) | |
1703 | tx_pool->consumer_index = | |
1704 | tx_pool->num_buffers - 1; | |
1705 | else | |
1706 | tx_pool->consumer_index--; | |
1707 | tx_pool->free_map[tx_pool->consumer_index] = index; | |
032c5e82 TF |
1708 | out: |
1709 | netdev->stats.tx_dropped += tx_dropped; | |
1710 | netdev->stats.tx_bytes += tx_bytes; | |
1711 | netdev->stats.tx_packets += tx_packets; | |
1712 | adapter->tx_send_failed += tx_send_failed; | |
1713 | adapter->tx_map_failed += tx_map_failed; | |
3d52b594 JA |
1714 | adapter->tx_stats_buffers[queue_num].packets += tx_packets; |
1715 | adapter->tx_stats_buffers[queue_num].bytes += tx_bytes; | |
1716 | adapter->tx_stats_buffers[queue_num].dropped_packets += tx_dropped; | |
032c5e82 TF |
1717 | |
1718 | return ret; | |
1719 | } | |
1720 | ||
1721 | static void ibmvnic_set_multi(struct net_device *netdev) | |
1722 | { | |
1723 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1724 | struct netdev_hw_addr *ha; | |
1725 | union ibmvnic_crq crq; | |
1726 | ||
1727 | memset(&crq, 0, sizeof(crq)); | |
1728 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
1729 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
1730 | ||
1731 | if (netdev->flags & IFF_PROMISC) { | |
1732 | if (!adapter->promisc_supported) | |
1733 | return; | |
1734 | } else { | |
1735 | if (netdev->flags & IFF_ALLMULTI) { | |
1736 | /* Accept all multicast */ | |
1737 | memset(&crq, 0, sizeof(crq)); | |
1738 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1739 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1740 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; | |
1741 | ibmvnic_send_crq(adapter, &crq); | |
1742 | } else if (netdev_mc_empty(netdev)) { | |
1743 | /* Reject all multicast */ | |
1744 | memset(&crq, 0, sizeof(crq)); | |
1745 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1746 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1747 | crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; | |
1748 | ibmvnic_send_crq(adapter, &crq); | |
1749 | } else { | |
1750 | /* Accept one or more multicast(s) */ | |
1751 | netdev_for_each_mc_addr(ha, netdev) { | |
1752 | memset(&crq, 0, sizeof(crq)); | |
1753 | crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; | |
1754 | crq.multicast_ctrl.cmd = MULTICAST_CTRL; | |
1755 | crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; | |
1756 | ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], | |
1757 | ha->addr); | |
1758 | ibmvnic_send_crq(adapter, &crq); | |
1759 | } | |
1760 | } | |
1761 | } | |
1762 | } | |
1763 | ||
62740e97 | 1764 | static int __ibmvnic_set_mac(struct net_device *netdev, u8 *dev_addr) |
032c5e82 TF |
1765 | { |
1766 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
032c5e82 | 1767 | union ibmvnic_crq crq; |
9c4eaabd | 1768 | int rc; |
032c5e82 | 1769 | |
62740e97 TF |
1770 | if (!is_valid_ether_addr(dev_addr)) { |
1771 | rc = -EADDRNOTAVAIL; | |
1772 | goto err; | |
1773 | } | |
032c5e82 TF |
1774 | |
1775 | memset(&crq, 0, sizeof(crq)); | |
1776 | crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; | |
1777 | crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; | |
62740e97 | 1778 | ether_addr_copy(&crq.change_mac_addr.mac_addr[0], dev_addr); |
f813614f | 1779 | |
ff25dcb9 TF |
1780 | mutex_lock(&adapter->fw_lock); |
1781 | adapter->fw_done_rc = 0; | |
070eca95 | 1782 | reinit_completion(&adapter->fw_done); |
ff25dcb9 | 1783 | |
9c4eaabd | 1784 | rc = ibmvnic_send_crq(adapter, &crq); |
62740e97 TF |
1785 | if (rc) { |
1786 | rc = -EIO; | |
ff25dcb9 | 1787 | mutex_unlock(&adapter->fw_lock); |
62740e97 TF |
1788 | goto err; |
1789 | } | |
1790 | ||
476d96ca | 1791 | rc = ibmvnic_wait_for_completion(adapter, &adapter->fw_done, 10000); |
032c5e82 | 1792 | /* netdev->dev_addr is changed in handle_change_mac_rsp function */ |
476d96ca | 1793 | if (rc || adapter->fw_done_rc) { |
62740e97 | 1794 | rc = -EIO; |
ff25dcb9 | 1795 | mutex_unlock(&adapter->fw_lock); |
62740e97 TF |
1796 | goto err; |
1797 | } | |
ff25dcb9 | 1798 | mutex_unlock(&adapter->fw_lock); |
62740e97 TF |
1799 | return 0; |
1800 | err: | |
1801 | ether_addr_copy(adapter->mac_addr, netdev->dev_addr); | |
1802 | return rc; | |
032c5e82 TF |
1803 | } |
1804 | ||
c26eba03 JA |
1805 | static int ibmvnic_set_mac(struct net_device *netdev, void *p) |
1806 | { | |
1807 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
1808 | struct sockaddr *addr = p; | |
f813614f | 1809 | int rc; |
c26eba03 | 1810 | |
62740e97 TF |
1811 | rc = 0; |
1812 | ether_addr_copy(adapter->mac_addr, addr->sa_data); | |
1813 | if (adapter->state != VNIC_PROBED) | |
1814 | rc = __ibmvnic_set_mac(netdev, addr->sa_data); | |
c26eba03 | 1815 | |
f813614f | 1816 | return rc; |
c26eba03 JA |
1817 | } |
1818 | ||
b27507bb JK |
1819 | /** |
1820 | * do_change_param_reset returns zero if we are able to keep processing reset | |
1821 | * events, or non-zero if we hit a fatal error and must halt. | |
1822 | */ | |
1823 | static int do_change_param_reset(struct ibmvnic_adapter *adapter, | |
1824 | struct ibmvnic_rwi *rwi, | |
1825 | u32 reset_state) | |
1826 | { | |
1827 | struct net_device *netdev = adapter->netdev; | |
1828 | int i, rc; | |
1829 | ||
1830 | netdev_dbg(adapter->netdev, "Change param resetting driver (%d)\n", | |
1831 | rwi->reset_reason); | |
1832 | ||
1833 | netif_carrier_off(netdev); | |
1834 | adapter->reset_reason = rwi->reset_reason; | |
1835 | ||
1836 | ibmvnic_cleanup(netdev); | |
1837 | ||
1838 | if (reset_state == VNIC_OPEN) { | |
1839 | rc = __ibmvnic_close(netdev); | |
1840 | if (rc) | |
1841 | return rc; | |
1842 | } | |
1843 | ||
1844 | release_resources(adapter); | |
1845 | release_sub_crqs(adapter, 1); | |
1846 | release_crq_queue(adapter); | |
1847 | ||
1848 | adapter->state = VNIC_PROBED; | |
1849 | ||
1850 | rc = init_crq_queue(adapter); | |
1851 | ||
1852 | if (rc) { | |
1853 | netdev_err(adapter->netdev, | |
1854 | "Couldn't initialize crq. rc=%d\n", rc); | |
1855 | return rc; | |
1856 | } | |
1857 | ||
1858 | rc = ibmvnic_reset_init(adapter); | |
1859 | if (rc) | |
1860 | return IBMVNIC_INIT_FAILED; | |
1861 | ||
1862 | /* If the adapter was in PROBE state prior to the reset, | |
1863 | * exit here. | |
1864 | */ | |
1865 | if (reset_state == VNIC_PROBED) | |
1866 | return 0; | |
1867 | ||
1868 | rc = ibmvnic_login(netdev); | |
1869 | if (rc) { | |
1870 | adapter->state = reset_state; | |
1871 | return rc; | |
1872 | } | |
1873 | ||
1874 | rc = init_resources(adapter); | |
1875 | if (rc) | |
1876 | return rc; | |
1877 | ||
1878 | ibmvnic_disable_irqs(adapter); | |
1879 | ||
1880 | adapter->state = VNIC_CLOSED; | |
1881 | ||
1882 | if (reset_state == VNIC_CLOSED) | |
1883 | return 0; | |
1884 | ||
1885 | rc = __ibmvnic_open(netdev); | |
1886 | if (rc) | |
1887 | return IBMVNIC_OPEN_FAILED; | |
1888 | ||
1889 | /* refresh device's multicast list */ | |
1890 | ibmvnic_set_multi(netdev); | |
1891 | ||
1892 | /* kick napi */ | |
1893 | for (i = 0; i < adapter->req_rx_queues; i++) | |
1894 | napi_schedule(&adapter->napi[i]); | |
1895 | ||
1896 | return 0; | |
1897 | } | |
1898 | ||
ed651a10 NF |
1899 | /** |
1900 | * do_reset returns zero if we are able to keep processing reset events, or | |
1901 | * non-zero if we hit a fatal error and must halt. | |
1902 | */ | |
1903 | static int do_reset(struct ibmvnic_adapter *adapter, | |
1904 | struct ibmvnic_rwi *rwi, u32 reset_state) | |
032c5e82 | 1905 | { |
896d8695 | 1906 | u64 old_num_rx_queues, old_num_tx_queues; |
5bf032ef | 1907 | u64 old_num_rx_slots, old_num_tx_slots; |
ed651a10 NF |
1908 | struct net_device *netdev = adapter->netdev; |
1909 | int i, rc; | |
1910 | ||
d1cf33d9 NF |
1911 | netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n", |
1912 | rwi->reset_reason); | |
1913 | ||
b27507bb JK |
1914 | rtnl_lock(); |
1915 | ||
ed651a10 NF |
1916 | netif_carrier_off(netdev); |
1917 | adapter->reset_reason = rwi->reset_reason; | |
1918 | ||
896d8695 JA |
1919 | old_num_rx_queues = adapter->req_rx_queues; |
1920 | old_num_tx_queues = adapter->req_tx_queues; | |
5bf032ef TF |
1921 | old_num_rx_slots = adapter->req_rx_add_entries_per_subcrq; |
1922 | old_num_tx_slots = adapter->req_tx_entries_per_subcrq; | |
896d8695 | 1923 | |
30f79625 NF |
1924 | ibmvnic_cleanup(netdev); |
1925 | ||
1f94608b TF |
1926 | if (reset_state == VNIC_OPEN && |
1927 | adapter->reset_reason != VNIC_RESET_MOBILITY && | |
30f79625 | 1928 | adapter->reset_reason != VNIC_RESET_FAILOVER) { |
b27507bb JK |
1929 | adapter->state = VNIC_CLOSING; |
1930 | ||
1931 | /* Release the RTNL lock before link state change and | |
1932 | * re-acquire after the link state change to allow | |
1933 | * linkwatch_event to grab the RTNL lock and run during | |
1934 | * a reset. | |
1935 | */ | |
1936 | rtnl_unlock(); | |
1937 | rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN); | |
1938 | rtnl_lock(); | |
18b8d6bb | 1939 | if (rc) |
b27507bb | 1940 | goto out; |
ed651a10 | 1941 | |
b27507bb JK |
1942 | if (adapter->state != VNIC_CLOSING) { |
1943 | rc = -1; | |
1944 | goto out; | |
1945 | } | |
1946 | ||
1947 | adapter->state = VNIC_CLOSED; | |
c26eba03 JA |
1948 | } |
1949 | ||
8cb31cfc JA |
1950 | if (adapter->reset_reason != VNIC_RESET_NON_FATAL) { |
1951 | /* remove the closed state so when we call open it appears | |
1952 | * we are coming from the probed state. | |
1953 | */ | |
1954 | adapter->state = VNIC_PROBED; | |
032c5e82 | 1955 | |
b27507bb | 1956 | if (adapter->reset_reason == VNIC_RESET_MOBILITY) { |
30f79625 NF |
1957 | rc = ibmvnic_reenable_crq_queue(adapter); |
1958 | release_sub_crqs(adapter, 1); | |
1959 | } else { | |
1960 | rc = ibmvnic_reset_crq(adapter); | |
1961 | if (!rc) | |
1962 | rc = vio_enable_interrupts(adapter->vdev); | |
1963 | } | |
1964 | ||
1965 | if (rc) { | |
1966 | netdev_err(adapter->netdev, | |
1967 | "Couldn't initialize crq. rc=%d\n", rc); | |
b27507bb | 1968 | goto out; |
30f79625 NF |
1969 | } |
1970 | ||
8a348450 | 1971 | rc = ibmvnic_reset_init(adapter); |
b27507bb JK |
1972 | if (rc) { |
1973 | rc = IBMVNIC_INIT_FAILED; | |
1974 | goto out; | |
1975 | } | |
ed651a10 | 1976 | |
8cb31cfc JA |
1977 | /* If the adapter was in PROBE state prior to the reset, |
1978 | * exit here. | |
1979 | */ | |
b27507bb JK |
1980 | if (reset_state == VNIC_PROBED) { |
1981 | rc = 0; | |
1982 | goto out; | |
1983 | } | |
ed651a10 | 1984 | |
8cb31cfc JA |
1985 | rc = ibmvnic_login(netdev); |
1986 | if (rc) { | |
3578a7ec | 1987 | adapter->state = reset_state; |
b27507bb | 1988 | goto out; |
8cb31cfc | 1989 | } |
ed651a10 | 1990 | |
b27507bb JK |
1991 | if (adapter->req_rx_queues != old_num_rx_queues || |
1992 | adapter->req_tx_queues != old_num_tx_queues || | |
1993 | adapter->req_rx_add_entries_per_subcrq != | |
1994 | old_num_rx_slots || | |
1995 | adapter->req_tx_entries_per_subcrq != | |
1996 | old_num_tx_slots) { | |
896d8695 JA |
1997 | release_rx_pools(adapter); |
1998 | release_tx_pools(adapter); | |
86f669b2 | 1999 | release_napi(adapter); |
a5681e20 JK |
2000 | release_vpd_data(adapter); |
2001 | ||
2002 | rc = init_resources(adapter); | |
f611a5b4 | 2003 | if (rc) |
b27507bb | 2004 | goto out; |
a5681e20 | 2005 | |
c26eba03 JA |
2006 | } else { |
2007 | rc = reset_tx_pools(adapter); | |
2008 | if (rc) | |
b27507bb | 2009 | goto out; |
8c0543ad | 2010 | |
c26eba03 JA |
2011 | rc = reset_rx_pools(adapter); |
2012 | if (rc) | |
b27507bb | 2013 | goto out; |
c26eba03 | 2014 | } |
134bbe7f | 2015 | ibmvnic_disable_irqs(adapter); |
8cb31cfc | 2016 | } |
e676d81c JA |
2017 | adapter->state = VNIC_CLOSED; |
2018 | ||
b27507bb JK |
2019 | if (reset_state == VNIC_CLOSED) { |
2020 | rc = 0; | |
2021 | goto out; | |
2022 | } | |
e676d81c | 2023 | |
ed651a10 NF |
2024 | rc = __ibmvnic_open(netdev); |
2025 | if (rc) { | |
b27507bb JK |
2026 | rc = IBMVNIC_OPEN_FAILED; |
2027 | goto out; | |
ed651a10 NF |
2028 | } |
2029 | ||
be32a243 TF |
2030 | /* refresh device's multicast list */ |
2031 | ibmvnic_set_multi(netdev); | |
2032 | ||
ed651a10 NF |
2033 | /* kick napi */ |
2034 | for (i = 0; i < adapter->req_rx_queues; i++) | |
2035 | napi_schedule(&adapter->napi[i]); | |
2036 | ||
b27507bb | 2037 | if (adapter->reset_reason != VNIC_RESET_FAILOVER) |
986103e7 | 2038 | call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev); |
61d3e1d9 | 2039 | |
b27507bb JK |
2040 | rc = 0; |
2041 | ||
2042 | out: | |
2043 | rtnl_unlock(); | |
2044 | ||
2045 | return rc; | |
ed651a10 NF |
2046 | } |
2047 | ||
2770a798 TF |
2048 | static int do_hard_reset(struct ibmvnic_adapter *adapter, |
2049 | struct ibmvnic_rwi *rwi, u32 reset_state) | |
2050 | { | |
2051 | struct net_device *netdev = adapter->netdev; | |
2052 | int rc; | |
2053 | ||
2054 | netdev_dbg(adapter->netdev, "Hard resetting driver (%d)\n", | |
2055 | rwi->reset_reason); | |
2056 | ||
2057 | netif_carrier_off(netdev); | |
2058 | adapter->reset_reason = rwi->reset_reason; | |
2059 | ||
2060 | ibmvnic_cleanup(netdev); | |
2061 | release_resources(adapter); | |
2062 | release_sub_crqs(adapter, 0); | |
2063 | release_crq_queue(adapter); | |
2064 | ||
2065 | /* remove the closed state so when we call open it appears | |
2066 | * we are coming from the probed state. | |
2067 | */ | |
2068 | adapter->state = VNIC_PROBED; | |
2069 | ||
bbd669a8 | 2070 | reinit_completion(&adapter->init_done); |
2770a798 TF |
2071 | rc = init_crq_queue(adapter); |
2072 | if (rc) { | |
2073 | netdev_err(adapter->netdev, | |
2074 | "Couldn't initialize crq. rc=%d\n", rc); | |
2075 | return rc; | |
2076 | } | |
2077 | ||
2078 | rc = ibmvnic_init(adapter); | |
2079 | if (rc) | |
2080 | return rc; | |
2081 | ||
2082 | /* If the adapter was in PROBE state prior to the reset, | |
2083 | * exit here. | |
2084 | */ | |
2085 | if (reset_state == VNIC_PROBED) | |
2086 | return 0; | |
2087 | ||
2088 | rc = ibmvnic_login(netdev); | |
2089 | if (rc) { | |
2090 | adapter->state = VNIC_PROBED; | |
2091 | return 0; | |
2092 | } | |
a5681e20 JK |
2093 | |
2094 | rc = init_resources(adapter); | |
2770a798 TF |
2095 | if (rc) |
2096 | return rc; | |
2097 | ||
2098 | ibmvnic_disable_irqs(adapter); | |
2099 | adapter->state = VNIC_CLOSED; | |
2100 | ||
2101 | if (reset_state == VNIC_CLOSED) | |
2102 | return 0; | |
2103 | ||
2104 | rc = __ibmvnic_open(netdev); | |
b27507bb JK |
2105 | if (rc) |
2106 | return IBMVNIC_OPEN_FAILED; | |
2770a798 | 2107 | |
2770a798 TF |
2108 | return 0; |
2109 | } | |
2110 | ||
ed651a10 NF |
2111 | static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter) |
2112 | { | |
2113 | struct ibmvnic_rwi *rwi; | |
6c5c7489 | 2114 | unsigned long flags; |
ed651a10 | 2115 | |
6c5c7489 | 2116 | spin_lock_irqsave(&adapter->rwi_lock, flags); |
ed651a10 NF |
2117 | |
2118 | if (!list_empty(&adapter->rwi_list)) { | |
2119 | rwi = list_first_entry(&adapter->rwi_list, struct ibmvnic_rwi, | |
2120 | list); | |
2121 | list_del(&rwi->list); | |
2122 | } else { | |
2123 | rwi = NULL; | |
2124 | } | |
2125 | ||
6c5c7489 | 2126 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
ed651a10 NF |
2127 | return rwi; |
2128 | } | |
2129 | ||
2130 | static void free_all_rwi(struct ibmvnic_adapter *adapter) | |
2131 | { | |
2132 | struct ibmvnic_rwi *rwi; | |
2133 | ||
2134 | rwi = get_next_rwi(adapter); | |
2135 | while (rwi) { | |
2136 | kfree(rwi); | |
2137 | rwi = get_next_rwi(adapter); | |
2138 | } | |
2139 | } | |
2140 | ||
2141 | static void __ibmvnic_reset(struct work_struct *work) | |
2142 | { | |
2143 | struct ibmvnic_rwi *rwi; | |
2144 | struct ibmvnic_adapter *adapter; | |
7d7195a0 JK |
2145 | bool saved_state = false; |
2146 | unsigned long flags; | |
ed651a10 | 2147 | u32 reset_state; |
c26eba03 | 2148 | int rc = 0; |
ed651a10 NF |
2149 | |
2150 | adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset); | |
ed651a10 | 2151 | |
7ed5b31f JK |
2152 | if (test_and_set_bit_lock(0, &adapter->resetting)) { |
2153 | schedule_delayed_work(&adapter->ibmvnic_delayed_reset, | |
2154 | IBMVNIC_RESET_DELAY); | |
2155 | return; | |
2156 | } | |
2157 | ||
ed651a10 NF |
2158 | rwi = get_next_rwi(adapter); |
2159 | while (rwi) { | |
7d7195a0 JK |
2160 | spin_lock_irqsave(&adapter->state_lock, flags); |
2161 | ||
36f1031c | 2162 | if (adapter->state == VNIC_REMOVING || |
c8dc5595 | 2163 | adapter->state == VNIC_REMOVED) { |
7d7195a0 | 2164 | spin_unlock_irqrestore(&adapter->state_lock, flags); |
1c2977c0 JK |
2165 | kfree(rwi); |
2166 | rc = EBUSY; | |
2167 | break; | |
2168 | } | |
36f1031c | 2169 | |
7d7195a0 JK |
2170 | if (!saved_state) { |
2171 | reset_state = adapter->state; | |
2172 | adapter->state = VNIC_RESETTING; | |
2173 | saved_state = true; | |
2174 | } | |
2175 | spin_unlock_irqrestore(&adapter->state_lock, flags); | |
2176 | ||
b27507bb JK |
2177 | if (rwi->reset_reason == VNIC_RESET_CHANGE_PARAM) { |
2178 | /* CHANGE_PARAM requestor holds rtnl_lock */ | |
2179 | rc = do_change_param_reset(adapter, rwi, reset_state); | |
2180 | } else if (adapter->force_reset_recovery) { | |
2181 | /* Transport event occurred during previous reset */ | |
2182 | if (adapter->wait_for_reset) { | |
2183 | /* Previous was CHANGE_PARAM; caller locked */ | |
2184 | adapter->force_reset_recovery = false; | |
2185 | rc = do_hard_reset(adapter, rwi, reset_state); | |
2186 | } else { | |
2187 | rtnl_lock(); | |
2188 | adapter->force_reset_recovery = false; | |
2189 | rc = do_hard_reset(adapter, rwi, reset_state); | |
2190 | rtnl_unlock(); | |
2191 | } | |
f9c6cea0 JK |
2192 | } else if (!(rwi->reset_reason == VNIC_RESET_FATAL && |
2193 | adapter->from_passive_init)) { | |
2770a798 TF |
2194 | rc = do_reset(adapter, rwi, reset_state); |
2195 | } | |
ed651a10 | 2196 | kfree(rwi); |
b27507bb JK |
2197 | if (rc == IBMVNIC_OPEN_FAILED) { |
2198 | if (list_empty(&adapter->rwi_list)) | |
2199 | adapter->state = VNIC_CLOSED; | |
2200 | else | |
2201 | adapter->state = reset_state; | |
2202 | rc = 0; | |
2203 | } else if (rc && rc != IBMVNIC_INIT_FAILED && | |
2770a798 | 2204 | !adapter->force_reset_recovery) |
ed651a10 NF |
2205 | break; |
2206 | ||
2207 | rwi = get_next_rwi(adapter); | |
7ed5b31f JK |
2208 | |
2209 | if (rwi && (rwi->reset_reason == VNIC_RESET_FAILOVER || | |
2210 | rwi->reset_reason == VNIC_RESET_MOBILITY)) | |
2211 | adapter->force_reset_recovery = true; | |
ed651a10 NF |
2212 | } |
2213 | ||
c26eba03 | 2214 | if (adapter->wait_for_reset) { |
c26eba03 JA |
2215 | adapter->reset_done_rc = rc; |
2216 | complete(&adapter->reset_done); | |
2217 | } | |
2218 | ||
ed651a10 | 2219 | if (rc) { |
d1cf33d9 | 2220 | netdev_dbg(adapter->netdev, "Reset failed\n"); |
ed651a10 | 2221 | free_all_rwi(adapter); |
ed651a10 | 2222 | } |
1c2977c0 | 2223 | |
7ed5b31f JK |
2224 | clear_bit_unlock(0, &adapter->resetting); |
2225 | } | |
2226 | ||
2227 | static void __ibmvnic_delayed_reset(struct work_struct *work) | |
2228 | { | |
2229 | struct ibmvnic_adapter *adapter; | |
2230 | ||
2231 | adapter = container_of(work, struct ibmvnic_adapter, | |
2232 | ibmvnic_delayed_reset.work); | |
2233 | __ibmvnic_reset(&adapter->ibmvnic_reset); | |
ed651a10 NF |
2234 | } |
2235 | ||
af894d23 TF |
2236 | static int ibmvnic_reset(struct ibmvnic_adapter *adapter, |
2237 | enum ibmvnic_reset_reason reason) | |
ed651a10 | 2238 | { |
2770a798 | 2239 | struct list_head *entry, *tmp_entry; |
ed651a10 NF |
2240 | struct ibmvnic_rwi *rwi, *tmp; |
2241 | struct net_device *netdev = adapter->netdev; | |
6c5c7489 | 2242 | unsigned long flags; |
af894d23 | 2243 | int ret; |
ed651a10 NF |
2244 | |
2245 | if (adapter->state == VNIC_REMOVING || | |
5a18e1e0 TF |
2246 | adapter->state == VNIC_REMOVED || |
2247 | adapter->failover_pending) { | |
af894d23 | 2248 | ret = EBUSY; |
5a18e1e0 | 2249 | netdev_dbg(netdev, "Adapter removing or pending failover, skipping reset\n"); |
af894d23 | 2250 | goto err; |
ed651a10 NF |
2251 | } |
2252 | ||
6a2fb0e9 NF |
2253 | if (adapter->state == VNIC_PROBING) { |
2254 | netdev_warn(netdev, "Adapter reset during probe\n"); | |
af894d23 TF |
2255 | ret = adapter->init_done_rc = EAGAIN; |
2256 | goto err; | |
6a2fb0e9 NF |
2257 | } |
2258 | ||
6c5c7489 | 2259 | spin_lock_irqsave(&adapter->rwi_lock, flags); |
ed651a10 NF |
2260 | |
2261 | list_for_each(entry, &adapter->rwi_list) { | |
2262 | tmp = list_entry(entry, struct ibmvnic_rwi, list); | |
2263 | if (tmp->reset_reason == reason) { | |
d1cf33d9 | 2264 | netdev_dbg(netdev, "Skipping matching reset\n"); |
6c5c7489 | 2265 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
af894d23 TF |
2266 | ret = EBUSY; |
2267 | goto err; | |
ed651a10 NF |
2268 | } |
2269 | } | |
2270 | ||
1d1bbc37 | 2271 | rwi = kzalloc(sizeof(*rwi), GFP_ATOMIC); |
ed651a10 | 2272 | if (!rwi) { |
6c5c7489 | 2273 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
ed651a10 | 2274 | ibmvnic_close(netdev); |
af894d23 TF |
2275 | ret = ENOMEM; |
2276 | goto err; | |
ed651a10 | 2277 | } |
2770a798 TF |
2278 | /* if we just received a transport event, |
2279 | * flush reset queue and process this reset | |
2280 | */ | |
2281 | if (adapter->force_reset_recovery && !list_empty(&adapter->rwi_list)) { | |
2282 | list_for_each_safe(entry, tmp_entry, &adapter->rwi_list) | |
2283 | list_del(entry); | |
2284 | } | |
ed651a10 NF |
2285 | rwi->reset_reason = reason; |
2286 | list_add_tail(&rwi->list, &adapter->rwi_list); | |
6c5c7489 | 2287 | spin_unlock_irqrestore(&adapter->rwi_lock, flags); |
d1cf33d9 | 2288 | netdev_dbg(adapter->netdev, "Scheduling reset (reason %d)\n", reason); |
ed651a10 | 2289 | schedule_work(&adapter->ibmvnic_reset); |
af894d23 TF |
2290 | |
2291 | return 0; | |
2292 | err: | |
af894d23 | 2293 | return -ret; |
ed651a10 NF |
2294 | } |
2295 | ||
0290bd29 | 2296 | static void ibmvnic_tx_timeout(struct net_device *dev, unsigned int txqueue) |
ed651a10 NF |
2297 | { |
2298 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
2299 | ||
2300 | ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT); | |
032c5e82 TF |
2301 | } |
2302 | ||
2303 | static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, | |
2304 | struct ibmvnic_rx_buff *rx_buff) | |
2305 | { | |
2306 | struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; | |
2307 | ||
2308 | rx_buff->skb = NULL; | |
2309 | ||
2310 | pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); | |
2311 | pool->next_alloc = (pool->next_alloc + 1) % pool->size; | |
2312 | ||
2313 | atomic_dec(&pool->available); | |
2314 | } | |
2315 | ||
2316 | static int ibmvnic_poll(struct napi_struct *napi, int budget) | |
2317 | { | |
2318 | struct net_device *netdev = napi->dev; | |
2319 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2320 | int scrq_num = (int)(napi - adapter->napi); | |
2321 | int frames_processed = 0; | |
152ce47d | 2322 | |
032c5e82 TF |
2323 | restart_poll: |
2324 | while (frames_processed < budget) { | |
2325 | struct sk_buff *skb; | |
2326 | struct ibmvnic_rx_buff *rx_buff; | |
2327 | union sub_crq *next; | |
2328 | u32 length; | |
2329 | u16 offset; | |
2330 | u8 flags = 0; | |
2331 | ||
7ed5b31f | 2332 | if (unlikely(test_bit(0, &adapter->resetting) && |
3468656f | 2333 | adapter->reset_reason != VNIC_RESET_NON_FATAL)) { |
21ecba6c TF |
2334 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); |
2335 | napi_complete_done(napi, frames_processed); | |
2336 | return frames_processed; | |
2337 | } | |
2338 | ||
032c5e82 TF |
2339 | if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) |
2340 | break; | |
2341 | next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); | |
2342 | rx_buff = | |
2343 | (struct ibmvnic_rx_buff *)be64_to_cpu(next-> | |
2344 | rx_comp.correlator); | |
2345 | /* do error checking */ | |
2346 | if (next->rx_comp.rc) { | |
e1cea2e7 JA |
2347 | netdev_dbg(netdev, "rx buffer returned with rc %x\n", |
2348 | be16_to_cpu(next->rx_comp.rc)); | |
032c5e82 TF |
2349 | /* free the entry */ |
2350 | next->rx_comp.first = 0; | |
4b9b0f01 | 2351 | dev_kfree_skb_any(rx_buff->skb); |
032c5e82 | 2352 | remove_buff_from_pool(adapter, rx_buff); |
ca05e316 | 2353 | continue; |
abe27a88 TF |
2354 | } else if (!rx_buff->skb) { |
2355 | /* free the entry */ | |
2356 | next->rx_comp.first = 0; | |
2357 | remove_buff_from_pool(adapter, rx_buff); | |
2358 | continue; | |
032c5e82 TF |
2359 | } |
2360 | ||
2361 | length = be32_to_cpu(next->rx_comp.len); | |
2362 | offset = be16_to_cpu(next->rx_comp.off_frame_data); | |
2363 | flags = next->rx_comp.flags; | |
2364 | skb = rx_buff->skb; | |
2365 | skb_copy_to_linear_data(skb, rx_buff->data + offset, | |
2366 | length); | |
6052d5e2 MFV |
2367 | |
2368 | /* VLAN Header has been stripped by the system firmware and | |
2369 | * needs to be inserted by the driver | |
2370 | */ | |
2371 | if (adapter->rx_vlan_header_insertion && | |
2372 | (flags & IBMVNIC_VLAN_STRIPPED)) | |
2373 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
2374 | ntohs(next->rx_comp.vlan_tci)); | |
2375 | ||
032c5e82 TF |
2376 | /* free the entry */ |
2377 | next->rx_comp.first = 0; | |
2378 | remove_buff_from_pool(adapter, rx_buff); | |
2379 | ||
2380 | skb_put(skb, length); | |
2381 | skb->protocol = eth_type_trans(skb, netdev); | |
94ca305f | 2382 | skb_record_rx_queue(skb, scrq_num); |
032c5e82 TF |
2383 | |
2384 | if (flags & IBMVNIC_IP_CHKSUM_GOOD && | |
2385 | flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { | |
2386 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2387 | } | |
2388 | ||
2389 | length = skb->len; | |
2390 | napi_gro_receive(napi, skb); /* send it up */ | |
2391 | netdev->stats.rx_packets++; | |
2392 | netdev->stats.rx_bytes += length; | |
3d52b594 JA |
2393 | adapter->rx_stats_buffers[scrq_num].packets++; |
2394 | adapter->rx_stats_buffers[scrq_num].bytes += length; | |
032c5e82 TF |
2395 | frames_processed++; |
2396 | } | |
152ce47d NF |
2397 | |
2398 | if (adapter->state != VNIC_CLOSING) | |
2399 | replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); | |
032c5e82 TF |
2400 | |
2401 | if (frames_processed < budget) { | |
2402 | enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
6ad20165 | 2403 | napi_complete_done(napi, frames_processed); |
032c5e82 TF |
2404 | if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && |
2405 | napi_reschedule(napi)) { | |
2406 | disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); | |
2407 | goto restart_poll; | |
2408 | } | |
2409 | } | |
2410 | return frames_processed; | |
2411 | } | |
2412 | ||
c26eba03 JA |
2413 | static int wait_for_reset(struct ibmvnic_adapter *adapter) |
2414 | { | |
af894d23 TF |
2415 | int rc, ret; |
2416 | ||
c26eba03 JA |
2417 | adapter->fallback.mtu = adapter->req_mtu; |
2418 | adapter->fallback.rx_queues = adapter->req_rx_queues; | |
2419 | adapter->fallback.tx_queues = adapter->req_tx_queues; | |
2420 | adapter->fallback.rx_entries = adapter->req_rx_add_entries_per_subcrq; | |
2421 | adapter->fallback.tx_entries = adapter->req_tx_entries_per_subcrq; | |
2422 | ||
070eca95 | 2423 | reinit_completion(&adapter->reset_done); |
c26eba03 | 2424 | adapter->wait_for_reset = true; |
af894d23 | 2425 | rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM); |
476d96ca TF |
2426 | |
2427 | if (rc) { | |
2428 | ret = rc; | |
2429 | goto out; | |
2430 | } | |
2431 | rc = ibmvnic_wait_for_completion(adapter, &adapter->reset_done, 60000); | |
2432 | if (rc) { | |
2433 | ret = -ENODEV; | |
2434 | goto out; | |
2435 | } | |
c26eba03 | 2436 | |
af894d23 | 2437 | ret = 0; |
c26eba03 | 2438 | if (adapter->reset_done_rc) { |
af894d23 | 2439 | ret = -EIO; |
c26eba03 JA |
2440 | adapter->desired.mtu = adapter->fallback.mtu; |
2441 | adapter->desired.rx_queues = adapter->fallback.rx_queues; | |
2442 | adapter->desired.tx_queues = adapter->fallback.tx_queues; | |
2443 | adapter->desired.rx_entries = adapter->fallback.rx_entries; | |
2444 | adapter->desired.tx_entries = adapter->fallback.tx_entries; | |
2445 | ||
070eca95 | 2446 | reinit_completion(&adapter->reset_done); |
af894d23 TF |
2447 | adapter->wait_for_reset = true; |
2448 | rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM); | |
476d96ca TF |
2449 | if (rc) { |
2450 | ret = rc; | |
2451 | goto out; | |
2452 | } | |
2453 | rc = ibmvnic_wait_for_completion(adapter, &adapter->reset_done, | |
2454 | 60000); | |
2455 | if (rc) { | |
2456 | ret = -ENODEV; | |
2457 | goto out; | |
2458 | } | |
c26eba03 | 2459 | } |
476d96ca | 2460 | out: |
c26eba03 JA |
2461 | adapter->wait_for_reset = false; |
2462 | ||
af894d23 | 2463 | return ret; |
c26eba03 JA |
2464 | } |
2465 | ||
3a807b75 JA |
2466 | static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu) |
2467 | { | |
c26eba03 JA |
2468 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2469 | ||
2470 | adapter->desired.mtu = new_mtu + ETH_HLEN; | |
2471 | ||
2472 | return wait_for_reset(adapter); | |
3a807b75 JA |
2473 | } |
2474 | ||
f10b09ef TF |
2475 | static netdev_features_t ibmvnic_features_check(struct sk_buff *skb, |
2476 | struct net_device *dev, | |
2477 | netdev_features_t features) | |
2478 | { | |
2479 | /* Some backing hardware adapters can not | |
2480 | * handle packets with a MSS less than 224 | |
2481 | * or with only one segment. | |
2482 | */ | |
2483 | if (skb_is_gso(skb)) { | |
2484 | if (skb_shinfo(skb)->gso_size < 224 || | |
2485 | skb_shinfo(skb)->gso_segs == 1) | |
2486 | features &= ~NETIF_F_GSO_MASK; | |
2487 | } | |
2488 | ||
2489 | return features; | |
2490 | } | |
2491 | ||
032c5e82 TF |
2492 | static const struct net_device_ops ibmvnic_netdev_ops = { |
2493 | .ndo_open = ibmvnic_open, | |
2494 | .ndo_stop = ibmvnic_close, | |
2495 | .ndo_start_xmit = ibmvnic_xmit, | |
2496 | .ndo_set_rx_mode = ibmvnic_set_multi, | |
2497 | .ndo_set_mac_address = ibmvnic_set_mac, | |
2498 | .ndo_validate_addr = eth_validate_addr, | |
032c5e82 | 2499 | .ndo_tx_timeout = ibmvnic_tx_timeout, |
3a807b75 | 2500 | .ndo_change_mtu = ibmvnic_change_mtu, |
f10b09ef | 2501 | .ndo_features_check = ibmvnic_features_check, |
032c5e82 TF |
2502 | }; |
2503 | ||
2504 | /* ethtool functions */ | |
2505 | ||
8a43379f PR |
2506 | static int ibmvnic_get_link_ksettings(struct net_device *netdev, |
2507 | struct ethtool_link_ksettings *cmd) | |
032c5e82 | 2508 | { |
f8d6ae0d MFV |
2509 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2510 | int rc; | |
2511 | ||
2512 | rc = send_query_phys_parms(adapter); | |
2513 | if (rc) { | |
2514 | adapter->speed = SPEED_UNKNOWN; | |
2515 | adapter->duplex = DUPLEX_UNKNOWN; | |
2516 | } | |
2517 | cmd->base.speed = adapter->speed; | |
2518 | cmd->base.duplex = adapter->duplex; | |
8a43379f PR |
2519 | cmd->base.port = PORT_FIBRE; |
2520 | cmd->base.phy_address = 0; | |
2521 | cmd->base.autoneg = AUTONEG_ENABLE; | |
2522 | ||
032c5e82 TF |
2523 | return 0; |
2524 | } | |
2525 | ||
4e6759be | 2526 | static void ibmvnic_get_drvinfo(struct net_device *netdev, |
032c5e82 TF |
2527 | struct ethtool_drvinfo *info) |
2528 | { | |
4e6759be DANR |
2529 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2530 | ||
032c5e82 TF |
2531 | strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); |
2532 | strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); | |
4e6759be DANR |
2533 | strlcpy(info->fw_version, adapter->fw_version, |
2534 | sizeof(info->fw_version)); | |
032c5e82 TF |
2535 | } |
2536 | ||
2537 | static u32 ibmvnic_get_msglevel(struct net_device *netdev) | |
2538 | { | |
2539 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2540 | ||
2541 | return adapter->msg_enable; | |
2542 | } | |
2543 | ||
2544 | static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) | |
2545 | { | |
2546 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2547 | ||
2548 | adapter->msg_enable = data; | |
2549 | } | |
2550 | ||
2551 | static u32 ibmvnic_get_link(struct net_device *netdev) | |
2552 | { | |
2553 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2554 | ||
2555 | /* Don't need to send a query because we request a logical link up at | |
2556 | * init and then we wait for link state indications | |
2557 | */ | |
2558 | return adapter->logical_link_state; | |
2559 | } | |
2560 | ||
2561 | static void ibmvnic_get_ringparam(struct net_device *netdev, | |
2562 | struct ethtool_ringparam *ring) | |
2563 | { | |
bc131b3a JA |
2564 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
2565 | ||
723ad916 TF |
2566 | if (adapter->priv_flags & IBMVNIC_USE_SERVER_MAXES) { |
2567 | ring->rx_max_pending = adapter->max_rx_add_entries_per_subcrq; | |
2568 | ring->tx_max_pending = adapter->max_tx_entries_per_subcrq; | |
2569 | } else { | |
2570 | ring->rx_max_pending = IBMVNIC_MAX_QUEUE_SZ; | |
2571 | ring->tx_max_pending = IBMVNIC_MAX_QUEUE_SZ; | |
2572 | } | |
032c5e82 TF |
2573 | ring->rx_mini_max_pending = 0; |
2574 | ring->rx_jumbo_max_pending = 0; | |
bc131b3a JA |
2575 | ring->rx_pending = adapter->req_rx_add_entries_per_subcrq; |
2576 | ring->tx_pending = adapter->req_tx_entries_per_subcrq; | |
032c5e82 TF |
2577 | ring->rx_mini_pending = 0; |
2578 | ring->rx_jumbo_pending = 0; | |
2579 | } | |
2580 | ||
c26eba03 JA |
2581 | static int ibmvnic_set_ringparam(struct net_device *netdev, |
2582 | struct ethtool_ringparam *ring) | |
2583 | { | |
2584 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
723ad916 | 2585 | int ret; |
c26eba03 | 2586 | |
723ad916 | 2587 | ret = 0; |
c26eba03 JA |
2588 | adapter->desired.rx_entries = ring->rx_pending; |
2589 | adapter->desired.tx_entries = ring->tx_pending; | |
2590 | ||
723ad916 TF |
2591 | ret = wait_for_reset(adapter); |
2592 | ||
2593 | if (!ret && | |
2594 | (adapter->req_rx_add_entries_per_subcrq != ring->rx_pending || | |
2595 | adapter->req_tx_entries_per_subcrq != ring->tx_pending)) | |
2596 | netdev_info(netdev, | |
2597 | "Could not match full ringsize request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n", | |
2598 | ring->rx_pending, ring->tx_pending, | |
2599 | adapter->req_rx_add_entries_per_subcrq, | |
2600 | adapter->req_tx_entries_per_subcrq); | |
2601 | return ret; | |
c26eba03 JA |
2602 | } |
2603 | ||
c2dbeb67 JA |
2604 | static void ibmvnic_get_channels(struct net_device *netdev, |
2605 | struct ethtool_channels *channels) | |
2606 | { | |
2607 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2608 | ||
723ad916 TF |
2609 | if (adapter->priv_flags & IBMVNIC_USE_SERVER_MAXES) { |
2610 | channels->max_rx = adapter->max_rx_queues; | |
2611 | channels->max_tx = adapter->max_tx_queues; | |
2612 | } else { | |
2613 | channels->max_rx = IBMVNIC_MAX_QUEUES; | |
2614 | channels->max_tx = IBMVNIC_MAX_QUEUES; | |
2615 | } | |
2616 | ||
c2dbeb67 JA |
2617 | channels->max_other = 0; |
2618 | channels->max_combined = 0; | |
2619 | channels->rx_count = adapter->req_rx_queues; | |
2620 | channels->tx_count = adapter->req_tx_queues; | |
2621 | channels->other_count = 0; | |
2622 | channels->combined_count = 0; | |
2623 | } | |
2624 | ||
c26eba03 JA |
2625 | static int ibmvnic_set_channels(struct net_device *netdev, |
2626 | struct ethtool_channels *channels) | |
2627 | { | |
2628 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
723ad916 | 2629 | int ret; |
c26eba03 | 2630 | |
723ad916 | 2631 | ret = 0; |
c26eba03 JA |
2632 | adapter->desired.rx_queues = channels->rx_count; |
2633 | adapter->desired.tx_queues = channels->tx_count; | |
2634 | ||
723ad916 TF |
2635 | ret = wait_for_reset(adapter); |
2636 | ||
2637 | if (!ret && | |
2638 | (adapter->req_rx_queues != channels->rx_count || | |
2639 | adapter->req_tx_queues != channels->tx_count)) | |
2640 | netdev_info(netdev, | |
2641 | "Could not match full channels request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n", | |
2642 | channels->rx_count, channels->tx_count, | |
2643 | adapter->req_rx_queues, adapter->req_tx_queues); | |
2644 | return ret; | |
2645 | ||
c26eba03 JA |
2646 | } |
2647 | ||
032c5e82 TF |
2648 | static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
2649 | { | |
3d52b594 | 2650 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
032c5e82 TF |
2651 | int i; |
2652 | ||
723ad916 TF |
2653 | switch (stringset) { |
2654 | case ETH_SS_STATS: | |
2655 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); | |
2656 | i++, data += ETH_GSTRING_LEN) | |
2657 | memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); | |
032c5e82 | 2658 | |
723ad916 TF |
2659 | for (i = 0; i < adapter->req_tx_queues; i++) { |
2660 | snprintf(data, ETH_GSTRING_LEN, "tx%d_packets", i); | |
2661 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2662 | |
723ad916 TF |
2663 | snprintf(data, ETH_GSTRING_LEN, "tx%d_bytes", i); |
2664 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2665 | |
723ad916 TF |
2666 | snprintf(data, ETH_GSTRING_LEN, |
2667 | "tx%d_dropped_packets", i); | |
2668 | data += ETH_GSTRING_LEN; | |
2669 | } | |
3d52b594 | 2670 | |
723ad916 TF |
2671 | for (i = 0; i < adapter->req_rx_queues; i++) { |
2672 | snprintf(data, ETH_GSTRING_LEN, "rx%d_packets", i); | |
2673 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2674 | |
723ad916 TF |
2675 | snprintf(data, ETH_GSTRING_LEN, "rx%d_bytes", i); |
2676 | data += ETH_GSTRING_LEN; | |
3d52b594 | 2677 | |
723ad916 TF |
2678 | snprintf(data, ETH_GSTRING_LEN, "rx%d_interrupts", i); |
2679 | data += ETH_GSTRING_LEN; | |
2680 | } | |
2681 | break; | |
3d52b594 | 2682 | |
723ad916 TF |
2683 | case ETH_SS_PRIV_FLAGS: |
2684 | for (i = 0; i < ARRAY_SIZE(ibmvnic_priv_flags); i++) | |
2685 | strcpy(data + i * ETH_GSTRING_LEN, | |
2686 | ibmvnic_priv_flags[i]); | |
2687 | break; | |
2688 | default: | |
2689 | return; | |
3d52b594 | 2690 | } |
032c5e82 TF |
2691 | } |
2692 | ||
2693 | static int ibmvnic_get_sset_count(struct net_device *dev, int sset) | |
2694 | { | |
3d52b594 JA |
2695 | struct ibmvnic_adapter *adapter = netdev_priv(dev); |
2696 | ||
032c5e82 TF |
2697 | switch (sset) { |
2698 | case ETH_SS_STATS: | |
3d52b594 JA |
2699 | return ARRAY_SIZE(ibmvnic_stats) + |
2700 | adapter->req_tx_queues * NUM_TX_STATS + | |
2701 | adapter->req_rx_queues * NUM_RX_STATS; | |
723ad916 TF |
2702 | case ETH_SS_PRIV_FLAGS: |
2703 | return ARRAY_SIZE(ibmvnic_priv_flags); | |
032c5e82 TF |
2704 | default: |
2705 | return -EOPNOTSUPP; | |
2706 | } | |
2707 | } | |
2708 | ||
2709 | static void ibmvnic_get_ethtool_stats(struct net_device *dev, | |
2710 | struct ethtool_stats *stats, u64 *data) | |
2711 | { | |
2712 | struct ibmvnic_adapter *adapter = netdev_priv(dev); | |
2713 | union ibmvnic_crq crq; | |
3d52b594 | 2714 | int i, j; |
9c4eaabd | 2715 | int rc; |
032c5e82 TF |
2716 | |
2717 | memset(&crq, 0, sizeof(crq)); | |
2718 | crq.request_statistics.first = IBMVNIC_CRQ_CMD; | |
2719 | crq.request_statistics.cmd = REQUEST_STATISTICS; | |
2720 | crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); | |
2721 | crq.request_statistics.len = | |
2722 | cpu_to_be32(sizeof(struct ibmvnic_statistics)); | |
032c5e82 TF |
2723 | |
2724 | /* Wait for data to be written */ | |
070eca95 | 2725 | reinit_completion(&adapter->stats_done); |
9c4eaabd TF |
2726 | rc = ibmvnic_send_crq(adapter, &crq); |
2727 | if (rc) | |
2728 | return; | |
476d96ca TF |
2729 | rc = ibmvnic_wait_for_completion(adapter, &adapter->stats_done, 10000); |
2730 | if (rc) | |
2731 | return; | |
032c5e82 TF |
2732 | |
2733 | for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) | |
52da5c11 JA |
2734 | data[i] = be64_to_cpu(IBMVNIC_GET_STAT(adapter, |
2735 | ibmvnic_stats[i].offset)); | |
3d52b594 JA |
2736 | |
2737 | for (j = 0; j < adapter->req_tx_queues; j++) { | |
2738 | data[i] = adapter->tx_stats_buffers[j].packets; | |
2739 | i++; | |
2740 | data[i] = adapter->tx_stats_buffers[j].bytes; | |
2741 | i++; | |
2742 | data[i] = adapter->tx_stats_buffers[j].dropped_packets; | |
2743 | i++; | |
2744 | } | |
2745 | ||
2746 | for (j = 0; j < adapter->req_rx_queues; j++) { | |
2747 | data[i] = adapter->rx_stats_buffers[j].packets; | |
2748 | i++; | |
2749 | data[i] = adapter->rx_stats_buffers[j].bytes; | |
2750 | i++; | |
2751 | data[i] = adapter->rx_stats_buffers[j].interrupts; | |
2752 | i++; | |
2753 | } | |
032c5e82 TF |
2754 | } |
2755 | ||
723ad916 TF |
2756 | static u32 ibmvnic_get_priv_flags(struct net_device *netdev) |
2757 | { | |
2758 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2759 | ||
2760 | return adapter->priv_flags; | |
2761 | } | |
2762 | ||
2763 | static int ibmvnic_set_priv_flags(struct net_device *netdev, u32 flags) | |
2764 | { | |
2765 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
2766 | bool which_maxes = !!(flags & IBMVNIC_USE_SERVER_MAXES); | |
2767 | ||
2768 | if (which_maxes) | |
2769 | adapter->priv_flags |= IBMVNIC_USE_SERVER_MAXES; | |
2770 | else | |
2771 | adapter->priv_flags &= ~IBMVNIC_USE_SERVER_MAXES; | |
2772 | ||
2773 | return 0; | |
2774 | } | |
032c5e82 | 2775 | static const struct ethtool_ops ibmvnic_ethtool_ops = { |
032c5e82 TF |
2776 | .get_drvinfo = ibmvnic_get_drvinfo, |
2777 | .get_msglevel = ibmvnic_get_msglevel, | |
2778 | .set_msglevel = ibmvnic_set_msglevel, | |
2779 | .get_link = ibmvnic_get_link, | |
2780 | .get_ringparam = ibmvnic_get_ringparam, | |
c26eba03 | 2781 | .set_ringparam = ibmvnic_set_ringparam, |
c2dbeb67 | 2782 | .get_channels = ibmvnic_get_channels, |
c26eba03 | 2783 | .set_channels = ibmvnic_set_channels, |
032c5e82 TF |
2784 | .get_strings = ibmvnic_get_strings, |
2785 | .get_sset_count = ibmvnic_get_sset_count, | |
2786 | .get_ethtool_stats = ibmvnic_get_ethtool_stats, | |
8a43379f | 2787 | .get_link_ksettings = ibmvnic_get_link_ksettings, |
723ad916 TF |
2788 | .get_priv_flags = ibmvnic_get_priv_flags, |
2789 | .set_priv_flags = ibmvnic_set_priv_flags, | |
032c5e82 TF |
2790 | }; |
2791 | ||
2792 | /* Routines for managing CRQs/sCRQs */ | |
2793 | ||
57a49436 NF |
2794 | static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter, |
2795 | struct ibmvnic_sub_crq_queue *scrq) | |
2796 | { | |
2797 | int rc; | |
2798 | ||
2799 | if (scrq->irq) { | |
2800 | free_irq(scrq->irq, scrq); | |
2801 | irq_dispose_mapping(scrq->irq); | |
2802 | scrq->irq = 0; | |
2803 | } | |
2804 | ||
c8b2ad0a | 2805 | memset(scrq->msgs, 0, 4 * PAGE_SIZE); |
41f71467 | 2806 | atomic_set(&scrq->used, 0); |
57a49436 NF |
2807 | scrq->cur = 0; |
2808 | ||
2809 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
2810 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
2811 | return rc; | |
2812 | } | |
2813 | ||
2814 | static int reset_sub_crq_queues(struct ibmvnic_adapter *adapter) | |
2815 | { | |
2816 | int i, rc; | |
2817 | ||
2818 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
d1cf33d9 | 2819 | netdev_dbg(adapter->netdev, "Re-setting tx_scrq[%d]\n", i); |
57a49436 NF |
2820 | rc = reset_one_sub_crq_queue(adapter, adapter->tx_scrq[i]); |
2821 | if (rc) | |
2822 | return rc; | |
2823 | } | |
2824 | ||
2825 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
d1cf33d9 | 2826 | netdev_dbg(adapter->netdev, "Re-setting rx_scrq[%d]\n", i); |
57a49436 NF |
2827 | rc = reset_one_sub_crq_queue(adapter, adapter->rx_scrq[i]); |
2828 | if (rc) | |
2829 | return rc; | |
2830 | } | |
2831 | ||
57a49436 NF |
2832 | return rc; |
2833 | } | |
2834 | ||
032c5e82 | 2835 | static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, |
d7c0ef36 NF |
2836 | struct ibmvnic_sub_crq_queue *scrq, |
2837 | bool do_h_free) | |
032c5e82 TF |
2838 | { |
2839 | struct device *dev = &adapter->vdev->dev; | |
2840 | long rc; | |
2841 | ||
2842 | netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); | |
2843 | ||
d7c0ef36 NF |
2844 | if (do_h_free) { |
2845 | /* Close the sub-crqs */ | |
2846 | do { | |
2847 | rc = plpar_hcall_norets(H_FREE_SUB_CRQ, | |
2848 | adapter->vdev->unit_address, | |
2849 | scrq->crq_num); | |
2850 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
032c5e82 | 2851 | |
d7c0ef36 NF |
2852 | if (rc) { |
2853 | netdev_err(adapter->netdev, | |
2854 | "Failed to release sub-CRQ %16lx, rc = %ld\n", | |
2855 | scrq->crq_num, rc); | |
2856 | } | |
ffa73855 TF |
2857 | } |
2858 | ||
032c5e82 TF |
2859 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, |
2860 | DMA_BIDIRECTIONAL); | |
2861 | free_pages((unsigned long)scrq->msgs, 2); | |
2862 | kfree(scrq); | |
2863 | } | |
2864 | ||
2865 | static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter | |
2866 | *adapter) | |
2867 | { | |
2868 | struct device *dev = &adapter->vdev->dev; | |
2869 | struct ibmvnic_sub_crq_queue *scrq; | |
2870 | int rc; | |
2871 | ||
1bb3c739 | 2872 | scrq = kzalloc(sizeof(*scrq), GFP_KERNEL); |
032c5e82 TF |
2873 | if (!scrq) |
2874 | return NULL; | |
2875 | ||
7f7adc50 | 2876 | scrq->msgs = |
1bb3c739 | 2877 | (union sub_crq *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 2); |
032c5e82 TF |
2878 | if (!scrq->msgs) { |
2879 | dev_warn(dev, "Couldn't allocate crq queue messages page\n"); | |
2880 | goto zero_page_failed; | |
2881 | } | |
2882 | ||
2883 | scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, | |
2884 | DMA_BIDIRECTIONAL); | |
2885 | if (dma_mapping_error(dev, scrq->msg_token)) { | |
2886 | dev_warn(dev, "Couldn't map crq queue messages page\n"); | |
2887 | goto map_failed; | |
2888 | } | |
2889 | ||
2890 | rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, | |
2891 | 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); | |
2892 | ||
2893 | if (rc == H_RESOURCE) | |
2894 | rc = ibmvnic_reset_crq(adapter); | |
2895 | ||
2896 | if (rc == H_CLOSED) { | |
2897 | dev_warn(dev, "Partner adapter not ready, waiting.\n"); | |
2898 | } else if (rc) { | |
2899 | dev_warn(dev, "Error %d registering sub-crq\n", rc); | |
2900 | goto reg_failed; | |
2901 | } | |
2902 | ||
032c5e82 TF |
2903 | scrq->adapter = adapter; |
2904 | scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); | |
032c5e82 TF |
2905 | spin_lock_init(&scrq->lock); |
2906 | ||
2907 | netdev_dbg(adapter->netdev, | |
2908 | "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", | |
2909 | scrq->crq_num, scrq->hw_irq, scrq->irq); | |
2910 | ||
2911 | return scrq; | |
2912 | ||
032c5e82 TF |
2913 | reg_failed: |
2914 | dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, | |
2915 | DMA_BIDIRECTIONAL); | |
2916 | map_failed: | |
2917 | free_pages((unsigned long)scrq->msgs, 2); | |
2918 | zero_page_failed: | |
2919 | kfree(scrq); | |
2920 | ||
2921 | return NULL; | |
2922 | } | |
2923 | ||
d7c0ef36 | 2924 | static void release_sub_crqs(struct ibmvnic_adapter *adapter, bool do_h_free) |
032c5e82 TF |
2925 | { |
2926 | int i; | |
2927 | ||
2928 | if (adapter->tx_scrq) { | |
82e3be32 | 2929 | for (i = 0; i < adapter->num_active_tx_scrqs; i++) { |
b510888f NF |
2930 | if (!adapter->tx_scrq[i]) |
2931 | continue; | |
2932 | ||
d1cf33d9 NF |
2933 | netdev_dbg(adapter->netdev, "Releasing tx_scrq[%d]\n", |
2934 | i); | |
b510888f | 2935 | if (adapter->tx_scrq[i]->irq) { |
032c5e82 TF |
2936 | free_irq(adapter->tx_scrq[i]->irq, |
2937 | adapter->tx_scrq[i]); | |
88eb98a0 | 2938 | irq_dispose_mapping(adapter->tx_scrq[i]->irq); |
b510888f | 2939 | adapter->tx_scrq[i]->irq = 0; |
032c5e82 | 2940 | } |
b510888f | 2941 | |
d7c0ef36 NF |
2942 | release_sub_crq_queue(adapter, adapter->tx_scrq[i], |
2943 | do_h_free); | |
b510888f NF |
2944 | } |
2945 | ||
9501df3c | 2946 | kfree(adapter->tx_scrq); |
032c5e82 | 2947 | adapter->tx_scrq = NULL; |
82e3be32 | 2948 | adapter->num_active_tx_scrqs = 0; |
032c5e82 TF |
2949 | } |
2950 | ||
2951 | if (adapter->rx_scrq) { | |
82e3be32 | 2952 | for (i = 0; i < adapter->num_active_rx_scrqs; i++) { |
b510888f NF |
2953 | if (!adapter->rx_scrq[i]) |
2954 | continue; | |
2955 | ||
d1cf33d9 NF |
2956 | netdev_dbg(adapter->netdev, "Releasing rx_scrq[%d]\n", |
2957 | i); | |
b510888f | 2958 | if (adapter->rx_scrq[i]->irq) { |
032c5e82 TF |
2959 | free_irq(adapter->rx_scrq[i]->irq, |
2960 | adapter->rx_scrq[i]); | |
88eb98a0 | 2961 | irq_dispose_mapping(adapter->rx_scrq[i]->irq); |
b510888f | 2962 | adapter->rx_scrq[i]->irq = 0; |
032c5e82 | 2963 | } |
032c5e82 | 2964 | |
d7c0ef36 NF |
2965 | release_sub_crq_queue(adapter, adapter->rx_scrq[i], |
2966 | do_h_free); | |
b510888f | 2967 | } |
ea22d51a | 2968 | |
b510888f | 2969 | kfree(adapter->rx_scrq); |
ea22d51a | 2970 | adapter->rx_scrq = NULL; |
82e3be32 | 2971 | adapter->num_active_rx_scrqs = 0; |
ea22d51a | 2972 | } |
ea22d51a TF |
2973 | } |
2974 | ||
032c5e82 TF |
2975 | static int disable_scrq_irq(struct ibmvnic_adapter *adapter, |
2976 | struct ibmvnic_sub_crq_queue *scrq) | |
2977 | { | |
2978 | struct device *dev = &adapter->vdev->dev; | |
2979 | unsigned long rc; | |
2980 | ||
2981 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
2982 | H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
2983 | if (rc) | |
2984 | dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", | |
2985 | scrq->hw_irq, rc); | |
2986 | return rc; | |
2987 | } | |
2988 | ||
2989 | static int enable_scrq_irq(struct ibmvnic_adapter *adapter, | |
2990 | struct ibmvnic_sub_crq_queue *scrq) | |
2991 | { | |
2992 | struct device *dev = &adapter->vdev->dev; | |
2993 | unsigned long rc; | |
2994 | ||
2995 | if (scrq->hw_irq > 0x100000000ULL) { | |
2996 | dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); | |
2997 | return 1; | |
2998 | } | |
2999 | ||
7ed5b31f | 3000 | if (test_bit(0, &adapter->resetting) && |
73f9d364 | 3001 | adapter->reset_reason == VNIC_RESET_MOBILITY) { |
284f87d2 | 3002 | u64 val = (0xff000000) | scrq->hw_irq; |
73f9d364 | 3003 | |
284f87d2 | 3004 | rc = plpar_hcall_norets(H_EOI, val); |
2df5c60e JK |
3005 | /* H_EOI would fail with rc = H_FUNCTION when running |
3006 | * in XIVE mode which is expected, but not an error. | |
3007 | */ | |
3008 | if (rc && (rc != H_FUNCTION)) | |
284f87d2 JK |
3009 | dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n", |
3010 | val, rc); | |
73f9d364 | 3011 | } |
f23e0643 | 3012 | |
032c5e82 TF |
3013 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, |
3014 | H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); | |
3015 | if (rc) | |
3016 | dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", | |
3017 | scrq->hw_irq, rc); | |
3018 | return rc; | |
3019 | } | |
3020 | ||
3021 | static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, | |
3022 | struct ibmvnic_sub_crq_queue *scrq) | |
3023 | { | |
3024 | struct device *dev = &adapter->vdev->dev; | |
06b3e357 | 3025 | struct ibmvnic_tx_pool *tx_pool; |
032c5e82 TF |
3026 | struct ibmvnic_tx_buff *txbuff; |
3027 | union sub_crq *next; | |
3028 | int index; | |
3029 | int i, j; | |
3030 | ||
3031 | restart_loop: | |
3032 | while (pending_scrq(adapter, scrq)) { | |
3033 | unsigned int pool = scrq->pool_index; | |
ffc385b9 | 3034 | int num_entries = 0; |
032c5e82 TF |
3035 | |
3036 | next = ibmvnic_next_scrq(adapter, scrq); | |
3037 | for (i = 0; i < next->tx_comp.num_comps; i++) { | |
3038 | if (next->tx_comp.rcs[i]) { | |
3039 | dev_err(dev, "tx error %x\n", | |
3040 | next->tx_comp.rcs[i]); | |
3041 | continue; | |
3042 | } | |
3043 | index = be32_to_cpu(next->tx_comp.correlators[i]); | |
06b3e357 TF |
3044 | if (index & IBMVNIC_TSO_POOL_MASK) { |
3045 | tx_pool = &adapter->tso_pool[pool]; | |
3046 | index &= ~IBMVNIC_TSO_POOL_MASK; | |
3047 | } else { | |
3048 | tx_pool = &adapter->tx_pool[pool]; | |
3049 | } | |
3050 | ||
3051 | txbuff = &tx_pool->tx_buff[index]; | |
032c5e82 TF |
3052 | |
3053 | for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { | |
3054 | if (!txbuff->data_dma[j]) | |
3055 | continue; | |
3056 | ||
3057 | txbuff->data_dma[j] = 0; | |
032c5e82 TF |
3058 | } |
3059 | ||
142c0ac4 | 3060 | if (txbuff->last_frag) { |
032c5e82 | 3061 | dev_kfree_skb_any(txbuff->skb); |
7c3e7de3 | 3062 | txbuff->skb = NULL; |
142c0ac4 | 3063 | } |
032c5e82 | 3064 | |
ffc385b9 TF |
3065 | num_entries += txbuff->num_entries; |
3066 | ||
06b3e357 TF |
3067 | tx_pool->free_map[tx_pool->producer_index] = index; |
3068 | tx_pool->producer_index = | |
3069 | (tx_pool->producer_index + 1) % | |
3070 | tx_pool->num_buffers; | |
032c5e82 TF |
3071 | } |
3072 | /* remove tx_comp scrq*/ | |
3073 | next->tx_comp.first = 0; | |
7c3e7de3 | 3074 | |
ffc385b9 | 3075 | if (atomic_sub_return(num_entries, &scrq->used) <= |
7c3e7de3 NF |
3076 | (adapter->req_tx_entries_per_subcrq / 2) && |
3077 | __netif_subqueue_stopped(adapter->netdev, | |
3078 | scrq->pool_index)) { | |
3079 | netif_wake_subqueue(adapter->netdev, scrq->pool_index); | |
0aecb13c TF |
3080 | netdev_dbg(adapter->netdev, "Started queue %d\n", |
3081 | scrq->pool_index); | |
7c3e7de3 | 3082 | } |
032c5e82 TF |
3083 | } |
3084 | ||
3085 | enable_scrq_irq(adapter, scrq); | |
3086 | ||
3087 | if (pending_scrq(adapter, scrq)) { | |
3088 | disable_scrq_irq(adapter, scrq); | |
3089 | goto restart_loop; | |
3090 | } | |
3091 | ||
3092 | return 0; | |
3093 | } | |
3094 | ||
3095 | static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) | |
3096 | { | |
3097 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
3098 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
3099 | ||
3100 | disable_scrq_irq(adapter, scrq); | |
3101 | ibmvnic_complete_tx(adapter, scrq); | |
3102 | ||
3103 | return IRQ_HANDLED; | |
3104 | } | |
3105 | ||
3106 | static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) | |
3107 | { | |
3108 | struct ibmvnic_sub_crq_queue *scrq = instance; | |
3109 | struct ibmvnic_adapter *adapter = scrq->adapter; | |
3110 | ||
09fb35ea NF |
3111 | /* When booting a kdump kernel we can hit pending interrupts |
3112 | * prior to completing driver initialization. | |
3113 | */ | |
3114 | if (unlikely(adapter->state != VNIC_OPEN)) | |
3115 | return IRQ_NONE; | |
3116 | ||
3d52b594 JA |
3117 | adapter->rx_stats_buffers[scrq->scrq_num].interrupts++; |
3118 | ||
032c5e82 TF |
3119 | if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { |
3120 | disable_scrq_irq(adapter, scrq); | |
3121 | __napi_schedule(&adapter->napi[scrq->scrq_num]); | |
3122 | } | |
3123 | ||
3124 | return IRQ_HANDLED; | |
3125 | } | |
3126 | ||
ea22d51a TF |
3127 | static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) |
3128 | { | |
3129 | struct device *dev = &adapter->vdev->dev; | |
3130 | struct ibmvnic_sub_crq_queue *scrq; | |
3131 | int i = 0, j = 0; | |
3132 | int rc = 0; | |
3133 | ||
3134 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
d1cf33d9 NF |
3135 | netdev_dbg(adapter->netdev, "Initializing tx_scrq[%d] irq\n", |
3136 | i); | |
ea22d51a TF |
3137 | scrq = adapter->tx_scrq[i]; |
3138 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
3139 | ||
99c1790e | 3140 | if (!scrq->irq) { |
ea22d51a TF |
3141 | rc = -EINVAL; |
3142 | dev_err(dev, "Error mapping irq\n"); | |
3143 | goto req_tx_irq_failed; | |
3144 | } | |
3145 | ||
e56e2515 MFV |
3146 | snprintf(scrq->name, sizeof(scrq->name), "ibmvnic-%x-tx%d", |
3147 | adapter->vdev->unit_address, i); | |
ea22d51a | 3148 | rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, |
e56e2515 | 3149 | 0, scrq->name, scrq); |
ea22d51a TF |
3150 | |
3151 | if (rc) { | |
3152 | dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", | |
3153 | scrq->irq, rc); | |
3154 | irq_dispose_mapping(scrq->irq); | |
af9090c2 | 3155 | goto req_tx_irq_failed; |
ea22d51a TF |
3156 | } |
3157 | } | |
3158 | ||
3159 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
d1cf33d9 NF |
3160 | netdev_dbg(adapter->netdev, "Initializing rx_scrq[%d] irq\n", |
3161 | i); | |
ea22d51a TF |
3162 | scrq = adapter->rx_scrq[i]; |
3163 | scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); | |
99c1790e | 3164 | if (!scrq->irq) { |
ea22d51a TF |
3165 | rc = -EINVAL; |
3166 | dev_err(dev, "Error mapping irq\n"); | |
3167 | goto req_rx_irq_failed; | |
3168 | } | |
e56e2515 MFV |
3169 | snprintf(scrq->name, sizeof(scrq->name), "ibmvnic-%x-rx%d", |
3170 | adapter->vdev->unit_address, i); | |
ea22d51a | 3171 | rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, |
e56e2515 | 3172 | 0, scrq->name, scrq); |
ea22d51a TF |
3173 | if (rc) { |
3174 | dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", | |
3175 | scrq->irq, rc); | |
3176 | irq_dispose_mapping(scrq->irq); | |
3177 | goto req_rx_irq_failed; | |
3178 | } | |
3179 | } | |
3180 | return rc; | |
3181 | ||
3182 | req_rx_irq_failed: | |
8bf371e6 | 3183 | for (j = 0; j < i; j++) { |
ea22d51a TF |
3184 | free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); |
3185 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 3186 | } |
ea22d51a TF |
3187 | i = adapter->req_tx_queues; |
3188 | req_tx_irq_failed: | |
8bf371e6 | 3189 | for (j = 0; j < i; j++) { |
ea22d51a TF |
3190 | free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); |
3191 | irq_dispose_mapping(adapter->rx_scrq[j]->irq); | |
8bf371e6 | 3192 | } |
d7c0ef36 | 3193 | release_sub_crqs(adapter, 1); |
ea22d51a TF |
3194 | return rc; |
3195 | } | |
3196 | ||
d346b9bc | 3197 | static int init_sub_crqs(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3198 | { |
3199 | struct device *dev = &adapter->vdev->dev; | |
3200 | struct ibmvnic_sub_crq_queue **allqueues; | |
3201 | int registered_queues = 0; | |
032c5e82 TF |
3202 | int total_queues; |
3203 | int more = 0; | |
ea22d51a | 3204 | int i; |
032c5e82 | 3205 | |
032c5e82 TF |
3206 | total_queues = adapter->req_tx_queues + adapter->req_rx_queues; |
3207 | ||
1bb3c739 | 3208 | allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_KERNEL); |
032c5e82 | 3209 | if (!allqueues) |
d346b9bc | 3210 | return -1; |
032c5e82 TF |
3211 | |
3212 | for (i = 0; i < total_queues; i++) { | |
3213 | allqueues[i] = init_sub_crq_queue(adapter); | |
3214 | if (!allqueues[i]) { | |
3215 | dev_warn(dev, "Couldn't allocate all sub-crqs\n"); | |
3216 | break; | |
3217 | } | |
3218 | registered_queues++; | |
3219 | } | |
3220 | ||
3221 | /* Make sure we were able to register the minimum number of queues */ | |
3222 | if (registered_queues < | |
3223 | adapter->min_tx_queues + adapter->min_rx_queues) { | |
3224 | dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); | |
3225 | goto tx_failed; | |
3226 | } | |
3227 | ||
3228 | /* Distribute the failed allocated queues*/ | |
3229 | for (i = 0; i < total_queues - registered_queues + more ; i++) { | |
3230 | netdev_dbg(adapter->netdev, "Reducing number of queues\n"); | |
3231 | switch (i % 3) { | |
3232 | case 0: | |
3233 | if (adapter->req_rx_queues > adapter->min_rx_queues) | |
3234 | adapter->req_rx_queues--; | |
3235 | else | |
3236 | more++; | |
3237 | break; | |
3238 | case 1: | |
3239 | if (adapter->req_tx_queues > adapter->min_tx_queues) | |
3240 | adapter->req_tx_queues--; | |
3241 | else | |
3242 | more++; | |
3243 | break; | |
3244 | } | |
3245 | } | |
3246 | ||
3247 | adapter->tx_scrq = kcalloc(adapter->req_tx_queues, | |
1bb3c739 | 3248 | sizeof(*adapter->tx_scrq), GFP_KERNEL); |
032c5e82 TF |
3249 | if (!adapter->tx_scrq) |
3250 | goto tx_failed; | |
3251 | ||
3252 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
3253 | adapter->tx_scrq[i] = allqueues[i]; | |
3254 | adapter->tx_scrq[i]->pool_index = i; | |
82e3be32 | 3255 | adapter->num_active_tx_scrqs++; |
032c5e82 TF |
3256 | } |
3257 | ||
3258 | adapter->rx_scrq = kcalloc(adapter->req_rx_queues, | |
1bb3c739 | 3259 | sizeof(*adapter->rx_scrq), GFP_KERNEL); |
032c5e82 TF |
3260 | if (!adapter->rx_scrq) |
3261 | goto rx_failed; | |
3262 | ||
3263 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
3264 | adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; | |
3265 | adapter->rx_scrq[i]->scrq_num = i; | |
82e3be32 | 3266 | adapter->num_active_rx_scrqs++; |
032c5e82 TF |
3267 | } |
3268 | ||
d346b9bc NF |
3269 | kfree(allqueues); |
3270 | return 0; | |
3271 | ||
3272 | rx_failed: | |
3273 | kfree(adapter->tx_scrq); | |
3274 | adapter->tx_scrq = NULL; | |
3275 | tx_failed: | |
3276 | for (i = 0; i < registered_queues; i++) | |
d7c0ef36 | 3277 | release_sub_crq_queue(adapter, allqueues[i], 1); |
d346b9bc NF |
3278 | kfree(allqueues); |
3279 | return -1; | |
3280 | } | |
3281 | ||
3282 | static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry) | |
3283 | { | |
3284 | struct device *dev = &adapter->vdev->dev; | |
3285 | union ibmvnic_crq crq; | |
c26eba03 | 3286 | int max_entries; |
d346b9bc NF |
3287 | |
3288 | if (!retry) { | |
3289 | /* Sub-CRQ entries are 32 byte long */ | |
3290 | int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); | |
3291 | ||
3292 | if (adapter->min_tx_entries_per_subcrq > entries_page || | |
3293 | adapter->min_rx_add_entries_per_subcrq > entries_page) { | |
3294 | dev_err(dev, "Fatal, invalid entries per sub-crq\n"); | |
3295 | return; | |
3296 | } | |
3297 | ||
c26eba03 JA |
3298 | if (adapter->desired.mtu) |
3299 | adapter->req_mtu = adapter->desired.mtu; | |
3300 | else | |
3301 | adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; | |
3302 | ||
3303 | if (!adapter->desired.tx_entries) | |
3304 | adapter->desired.tx_entries = | |
3305 | adapter->max_tx_entries_per_subcrq; | |
3306 | if (!adapter->desired.rx_entries) | |
3307 | adapter->desired.rx_entries = | |
3308 | adapter->max_rx_add_entries_per_subcrq; | |
3309 | ||
3310 | max_entries = IBMVNIC_MAX_LTB_SIZE / | |
3311 | (adapter->req_mtu + IBMVNIC_BUFFER_HLEN); | |
3312 | ||
3313 | if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) * | |
3314 | adapter->desired.tx_entries > IBMVNIC_MAX_LTB_SIZE) { | |
3315 | adapter->desired.tx_entries = max_entries; | |
3316 | } | |
d346b9bc | 3317 | |
c26eba03 JA |
3318 | if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) * |
3319 | adapter->desired.rx_entries > IBMVNIC_MAX_LTB_SIZE) { | |
3320 | adapter->desired.rx_entries = max_entries; | |
3321 | } | |
3322 | ||
3323 | if (adapter->desired.tx_entries) | |
3324 | adapter->req_tx_entries_per_subcrq = | |
3325 | adapter->desired.tx_entries; | |
3326 | else | |
3327 | adapter->req_tx_entries_per_subcrq = | |
3328 | adapter->max_tx_entries_per_subcrq; | |
3329 | ||
3330 | if (adapter->desired.rx_entries) | |
3331 | adapter->req_rx_add_entries_per_subcrq = | |
3332 | adapter->desired.rx_entries; | |
3333 | else | |
3334 | adapter->req_rx_add_entries_per_subcrq = | |
3335 | adapter->max_rx_add_entries_per_subcrq; | |
3336 | ||
3337 | if (adapter->desired.tx_queues) | |
3338 | adapter->req_tx_queues = | |
3339 | adapter->desired.tx_queues; | |
3340 | else | |
3341 | adapter->req_tx_queues = | |
3342 | adapter->opt_tx_comp_sub_queues; | |
3343 | ||
3344 | if (adapter->desired.rx_queues) | |
3345 | adapter->req_rx_queues = | |
3346 | adapter->desired.rx_queues; | |
3347 | else | |
3348 | adapter->req_rx_queues = | |
3349 | adapter->opt_rx_comp_queues; | |
3350 | ||
3351 | adapter->req_rx_add_queues = adapter->max_rx_add_queues; | |
d346b9bc NF |
3352 | } |
3353 | ||
032c5e82 TF |
3354 | memset(&crq, 0, sizeof(crq)); |
3355 | crq.request_capability.first = IBMVNIC_CRQ_CMD; | |
3356 | crq.request_capability.cmd = REQUEST_CAPABILITY; | |
3357 | ||
3358 | crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); | |
de89e854 | 3359 | crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); |
901e040a | 3360 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3361 | ibmvnic_send_crq(adapter, &crq); |
3362 | ||
3363 | crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); | |
de89e854 | 3364 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); |
901e040a | 3365 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3366 | ibmvnic_send_crq(adapter, &crq); |
3367 | ||
3368 | crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); | |
de89e854 | 3369 | crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); |
901e040a | 3370 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3371 | ibmvnic_send_crq(adapter, &crq); |
3372 | ||
3373 | crq.request_capability.capability = | |
3374 | cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); | |
3375 | crq.request_capability.number = | |
de89e854 | 3376 | cpu_to_be64(adapter->req_tx_entries_per_subcrq); |
901e040a | 3377 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3378 | ibmvnic_send_crq(adapter, &crq); |
3379 | ||
3380 | crq.request_capability.capability = | |
3381 | cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); | |
3382 | crq.request_capability.number = | |
de89e854 | 3383 | cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); |
901e040a | 3384 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3385 | ibmvnic_send_crq(adapter, &crq); |
3386 | ||
3387 | crq.request_capability.capability = cpu_to_be16(REQ_MTU); | |
de89e854 | 3388 | crq.request_capability.number = cpu_to_be64(adapter->req_mtu); |
901e040a | 3389 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3390 | ibmvnic_send_crq(adapter, &crq); |
3391 | ||
3392 | if (adapter->netdev->flags & IFF_PROMISC) { | |
3393 | if (adapter->promisc_supported) { | |
3394 | crq.request_capability.capability = | |
3395 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 3396 | crq.request_capability.number = cpu_to_be64(1); |
901e040a | 3397 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3398 | ibmvnic_send_crq(adapter, &crq); |
3399 | } | |
3400 | } else { | |
3401 | crq.request_capability.capability = | |
3402 | cpu_to_be16(PROMISC_REQUESTED); | |
de89e854 | 3403 | crq.request_capability.number = cpu_to_be64(0); |
901e040a | 3404 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3405 | ibmvnic_send_crq(adapter, &crq); |
3406 | } | |
032c5e82 TF |
3407 | } |
3408 | ||
3409 | static int pending_scrq(struct ibmvnic_adapter *adapter, | |
3410 | struct ibmvnic_sub_crq_queue *scrq) | |
3411 | { | |
3412 | union sub_crq *entry = &scrq->msgs[scrq->cur]; | |
3413 | ||
1cf9cc72 | 3414 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) |
032c5e82 TF |
3415 | return 1; |
3416 | else | |
3417 | return 0; | |
3418 | } | |
3419 | ||
3420 | static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, | |
3421 | struct ibmvnic_sub_crq_queue *scrq) | |
3422 | { | |
3423 | union sub_crq *entry; | |
3424 | unsigned long flags; | |
3425 | ||
3426 | spin_lock_irqsave(&scrq->lock, flags); | |
3427 | entry = &scrq->msgs[scrq->cur]; | |
3428 | if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
3429 | if (++scrq->cur == scrq->size) | |
3430 | scrq->cur = 0; | |
3431 | } else { | |
3432 | entry = NULL; | |
3433 | } | |
3434 | spin_unlock_irqrestore(&scrq->lock, flags); | |
3435 | ||
3436 | return entry; | |
3437 | } | |
3438 | ||
3439 | static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) | |
3440 | { | |
3441 | struct ibmvnic_crq_queue *queue = &adapter->crq; | |
3442 | union ibmvnic_crq *crq; | |
3443 | ||
3444 | crq = &queue->msgs[queue->cur]; | |
3445 | if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { | |
3446 | if (++queue->cur == queue->size) | |
3447 | queue->cur = 0; | |
3448 | } else { | |
3449 | crq = NULL; | |
3450 | } | |
3451 | ||
3452 | return crq; | |
3453 | } | |
3454 | ||
2d14d379 TF |
3455 | static void print_subcrq_error(struct device *dev, int rc, const char *func) |
3456 | { | |
3457 | switch (rc) { | |
3458 | case H_PARAMETER: | |
3459 | dev_warn_ratelimited(dev, | |
3460 | "%s failed: Send request is malformed or adapter failover pending. (rc=%d)\n", | |
3461 | func, rc); | |
3462 | break; | |
3463 | case H_CLOSED: | |
3464 | dev_warn_ratelimited(dev, | |
3465 | "%s failed: Backing queue closed. Adapter is down or failover pending. (rc=%d)\n", | |
3466 | func, rc); | |
3467 | break; | |
3468 | default: | |
3469 | dev_err_ratelimited(dev, "%s failed: (rc=%d)\n", func, rc); | |
3470 | break; | |
3471 | } | |
3472 | } | |
3473 | ||
032c5e82 TF |
3474 | static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, |
3475 | union sub_crq *sub_crq) | |
3476 | { | |
3477 | unsigned int ua = adapter->vdev->unit_address; | |
3478 | struct device *dev = &adapter->vdev->dev; | |
3479 | u64 *u64_crq = (u64 *)sub_crq; | |
3480 | int rc; | |
3481 | ||
3482 | netdev_dbg(adapter->netdev, | |
3483 | "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", | |
3484 | (unsigned long int)cpu_to_be64(remote_handle), | |
3485 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
3486 | (unsigned long int)cpu_to_be64(u64_crq[1]), | |
3487 | (unsigned long int)cpu_to_be64(u64_crq[2]), | |
3488 | (unsigned long int)cpu_to_be64(u64_crq[3])); | |
3489 | ||
3490 | /* Make sure the hypervisor sees the complete request */ | |
3491 | mb(); | |
3492 | ||
3493 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, | |
3494 | cpu_to_be64(remote_handle), | |
3495 | cpu_to_be64(u64_crq[0]), | |
3496 | cpu_to_be64(u64_crq[1]), | |
3497 | cpu_to_be64(u64_crq[2]), | |
3498 | cpu_to_be64(u64_crq[3])); | |
3499 | ||
2d14d379 TF |
3500 | if (rc) |
3501 | print_subcrq_error(dev, rc, __func__); | |
032c5e82 TF |
3502 | |
3503 | return rc; | |
3504 | } | |
3505 | ||
ad7775dc TF |
3506 | static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, |
3507 | u64 remote_handle, u64 ioba, u64 num_entries) | |
3508 | { | |
3509 | unsigned int ua = adapter->vdev->unit_address; | |
3510 | struct device *dev = &adapter->vdev->dev; | |
3511 | int rc; | |
3512 | ||
3513 | /* Make sure the hypervisor sees the complete request */ | |
3514 | mb(); | |
3515 | rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, | |
3516 | cpu_to_be64(remote_handle), | |
3517 | ioba, num_entries); | |
3518 | ||
2d14d379 TF |
3519 | if (rc) |
3520 | print_subcrq_error(dev, rc, __func__); | |
ad7775dc TF |
3521 | |
3522 | return rc; | |
3523 | } | |
3524 | ||
032c5e82 TF |
3525 | static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, |
3526 | union ibmvnic_crq *crq) | |
3527 | { | |
3528 | unsigned int ua = adapter->vdev->unit_address; | |
3529 | struct device *dev = &adapter->vdev->dev; | |
3530 | u64 *u64_crq = (u64 *)crq; | |
3531 | int rc; | |
3532 | ||
3533 | netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", | |
3534 | (unsigned long int)cpu_to_be64(u64_crq[0]), | |
3535 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
3536 | ||
5153698e TF |
3537 | if (!adapter->crq.active && |
3538 | crq->generic.first != IBMVNIC_CRQ_INIT_CMD) { | |
3539 | dev_warn(dev, "Invalid request detected while CRQ is inactive, possible device state change during reset\n"); | |
3540 | return -EINVAL; | |
3541 | } | |
3542 | ||
032c5e82 TF |
3543 | /* Make sure the hypervisor sees the complete request */ |
3544 | mb(); | |
3545 | ||
3546 | rc = plpar_hcall_norets(H_SEND_CRQ, ua, | |
3547 | cpu_to_be64(u64_crq[0]), | |
3548 | cpu_to_be64(u64_crq[1])); | |
3549 | ||
3550 | if (rc) { | |
ec95dffa | 3551 | if (rc == H_CLOSED) { |
032c5e82 | 3552 | dev_warn(dev, "CRQ Queue closed\n"); |
7ed5b31f | 3553 | if (test_bit(0, &adapter->resetting)) |
ec95dffa NF |
3554 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); |
3555 | } | |
3556 | ||
032c5e82 TF |
3557 | dev_warn(dev, "Send error (rc=%d)\n", rc); |
3558 | } | |
3559 | ||
3560 | return rc; | |
3561 | } | |
3562 | ||
3563 | static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) | |
3564 | { | |
3565 | union ibmvnic_crq crq; | |
3566 | ||
3567 | memset(&crq, 0, sizeof(crq)); | |
3568 | crq.generic.first = IBMVNIC_CRQ_INIT_CMD; | |
3569 | crq.generic.cmd = IBMVNIC_CRQ_INIT; | |
3570 | netdev_dbg(adapter->netdev, "Sending CRQ init\n"); | |
3571 | ||
3572 | return ibmvnic_send_crq(adapter, &crq); | |
3573 | } | |
3574 | ||
032c5e82 TF |
3575 | static int send_version_xchg(struct ibmvnic_adapter *adapter) |
3576 | { | |
3577 | union ibmvnic_crq crq; | |
3578 | ||
3579 | memset(&crq, 0, sizeof(crq)); | |
3580 | crq.version_exchange.first = IBMVNIC_CRQ_CMD; | |
3581 | crq.version_exchange.cmd = VERSION_EXCHANGE; | |
3582 | crq.version_exchange.version = cpu_to_be16(ibmvnic_version); | |
3583 | ||
3584 | return ibmvnic_send_crq(adapter, &crq); | |
3585 | } | |
3586 | ||
37798d02 NF |
3587 | struct vnic_login_client_data { |
3588 | u8 type; | |
3589 | __be16 len; | |
08ea556e | 3590 | char name[]; |
37798d02 NF |
3591 | } __packed; |
3592 | ||
3593 | static int vnic_client_data_len(struct ibmvnic_adapter *adapter) | |
3594 | { | |
3595 | int len; | |
3596 | ||
3597 | /* Calculate the amount of buffer space needed for the | |
3598 | * vnic client data in the login buffer. There are four entries, | |
3599 | * OS name, LPAR name, device name, and a null last entry. | |
3600 | */ | |
3601 | len = 4 * sizeof(struct vnic_login_client_data); | |
3602 | len += 6; /* "Linux" plus NULL */ | |
3603 | len += strlen(utsname()->nodename) + 1; | |
3604 | len += strlen(adapter->netdev->name) + 1; | |
3605 | ||
3606 | return len; | |
3607 | } | |
3608 | ||
3609 | static void vnic_add_client_data(struct ibmvnic_adapter *adapter, | |
3610 | struct vnic_login_client_data *vlcd) | |
3611 | { | |
3612 | const char *os_name = "Linux"; | |
3613 | int len; | |
3614 | ||
3615 | /* Type 1 - LPAR OS */ | |
3616 | vlcd->type = 1; | |
3617 | len = strlen(os_name) + 1; | |
3618 | vlcd->len = cpu_to_be16(len); | |
08ea556e KC |
3619 | strncpy(vlcd->name, os_name, len); |
3620 | vlcd = (struct vnic_login_client_data *)(vlcd->name + len); | |
37798d02 NF |
3621 | |
3622 | /* Type 2 - LPAR name */ | |
3623 | vlcd->type = 2; | |
3624 | len = strlen(utsname()->nodename) + 1; | |
3625 | vlcd->len = cpu_to_be16(len); | |
08ea556e KC |
3626 | strncpy(vlcd->name, utsname()->nodename, len); |
3627 | vlcd = (struct vnic_login_client_data *)(vlcd->name + len); | |
37798d02 NF |
3628 | |
3629 | /* Type 3 - device name */ | |
3630 | vlcd->type = 3; | |
3631 | len = strlen(adapter->netdev->name) + 1; | |
3632 | vlcd->len = cpu_to_be16(len); | |
08ea556e | 3633 | strncpy(vlcd->name, adapter->netdev->name, len); |
37798d02 NF |
3634 | } |
3635 | ||
20a8ab74 | 3636 | static int send_login(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
3637 | { |
3638 | struct ibmvnic_login_rsp_buffer *login_rsp_buffer; | |
3639 | struct ibmvnic_login_buffer *login_buffer; | |
032c5e82 TF |
3640 | struct device *dev = &adapter->vdev->dev; |
3641 | dma_addr_t rsp_buffer_token; | |
3642 | dma_addr_t buffer_token; | |
3643 | size_t rsp_buffer_size; | |
3644 | union ibmvnic_crq crq; | |
032c5e82 TF |
3645 | size_t buffer_size; |
3646 | __be64 *tx_list_p; | |
3647 | __be64 *rx_list_p; | |
37798d02 NF |
3648 | int client_data_len; |
3649 | struct vnic_login_client_data *vlcd; | |
032c5e82 TF |
3650 | int i; |
3651 | ||
20a8ab74 TF |
3652 | if (!adapter->tx_scrq || !adapter->rx_scrq) { |
3653 | netdev_err(adapter->netdev, | |
3654 | "RX or TX queues are not allocated, device login failed\n"); | |
3655 | return -1; | |
3656 | } | |
3657 | ||
34f0f4e3 | 3658 | release_login_rsp_buffer(adapter); |
37798d02 NF |
3659 | client_data_len = vnic_client_data_len(adapter); |
3660 | ||
032c5e82 TF |
3661 | buffer_size = |
3662 | sizeof(struct ibmvnic_login_buffer) + | |
37798d02 NF |
3663 | sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues) + |
3664 | client_data_len; | |
032c5e82 | 3665 | |
37798d02 | 3666 | login_buffer = kzalloc(buffer_size, GFP_ATOMIC); |
032c5e82 TF |
3667 | if (!login_buffer) |
3668 | goto buf_alloc_failed; | |
3669 | ||
3670 | buffer_token = dma_map_single(dev, login_buffer, buffer_size, | |
3671 | DMA_TO_DEVICE); | |
3672 | if (dma_mapping_error(dev, buffer_token)) { | |
3673 | dev_err(dev, "Couldn't map login buffer\n"); | |
3674 | goto buf_map_failed; | |
3675 | } | |
3676 | ||
498cd8e4 JA |
3677 | rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + |
3678 | sizeof(u64) * adapter->req_tx_queues + | |
3679 | sizeof(u64) * adapter->req_rx_queues + | |
3680 | sizeof(u64) * adapter->req_rx_queues + | |
3681 | sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; | |
032c5e82 TF |
3682 | |
3683 | login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); | |
3684 | if (!login_rsp_buffer) | |
3685 | goto buf_rsp_alloc_failed; | |
3686 | ||
3687 | rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, | |
3688 | rsp_buffer_size, DMA_FROM_DEVICE); | |
3689 | if (dma_mapping_error(dev, rsp_buffer_token)) { | |
3690 | dev_err(dev, "Couldn't map login rsp buffer\n"); | |
3691 | goto buf_rsp_map_failed; | |
3692 | } | |
661a2622 | 3693 | |
032c5e82 TF |
3694 | adapter->login_buf = login_buffer; |
3695 | adapter->login_buf_token = buffer_token; | |
3696 | adapter->login_buf_sz = buffer_size; | |
3697 | adapter->login_rsp_buf = login_rsp_buffer; | |
3698 | adapter->login_rsp_buf_token = rsp_buffer_token; | |
3699 | adapter->login_rsp_buf_sz = rsp_buffer_size; | |
3700 | ||
3701 | login_buffer->len = cpu_to_be32(buffer_size); | |
3702 | login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); | |
3703 | login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); | |
3704 | login_buffer->off_txcomp_subcrqs = | |
3705 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); | |
3706 | login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); | |
3707 | login_buffer->off_rxcomp_subcrqs = | |
3708 | cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + | |
3709 | sizeof(u64) * adapter->req_tx_queues); | |
3710 | login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); | |
3711 | login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); | |
3712 | ||
3713 | tx_list_p = (__be64 *)((char *)login_buffer + | |
3714 | sizeof(struct ibmvnic_login_buffer)); | |
3715 | rx_list_p = (__be64 *)((char *)login_buffer + | |
3716 | sizeof(struct ibmvnic_login_buffer) + | |
3717 | sizeof(u64) * adapter->req_tx_queues); | |
3718 | ||
3719 | for (i = 0; i < adapter->req_tx_queues; i++) { | |
3720 | if (adapter->tx_scrq[i]) { | |
3721 | tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> | |
3722 | crq_num); | |
3723 | } | |
3724 | } | |
3725 | ||
3726 | for (i = 0; i < adapter->req_rx_queues; i++) { | |
3727 | if (adapter->rx_scrq[i]) { | |
3728 | rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> | |
3729 | crq_num); | |
3730 | } | |
3731 | } | |
3732 | ||
37798d02 NF |
3733 | /* Insert vNIC login client data */ |
3734 | vlcd = (struct vnic_login_client_data *) | |
3735 | ((char *)rx_list_p + (sizeof(u64) * adapter->req_rx_queues)); | |
3736 | login_buffer->client_data_offset = | |
3737 | cpu_to_be32((char *)vlcd - (char *)login_buffer); | |
3738 | login_buffer->client_data_len = cpu_to_be32(client_data_len); | |
3739 | ||
3740 | vnic_add_client_data(adapter, vlcd); | |
3741 | ||
032c5e82 TF |
3742 | netdev_dbg(adapter->netdev, "Login Buffer:\n"); |
3743 | for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { | |
3744 | netdev_dbg(adapter->netdev, "%016lx\n", | |
3745 | ((unsigned long int *)(adapter->login_buf))[i]); | |
3746 | } | |
3747 | ||
3748 | memset(&crq, 0, sizeof(crq)); | |
3749 | crq.login.first = IBMVNIC_CRQ_CMD; | |
3750 | crq.login.cmd = LOGIN; | |
3751 | crq.login.ioba = cpu_to_be32(buffer_token); | |
3752 | crq.login.len = cpu_to_be32(buffer_size); | |
032c5e82 TF |
3753 | ibmvnic_send_crq(adapter, &crq); |
3754 | ||
20a8ab74 | 3755 | return 0; |
032c5e82 | 3756 | |
032c5e82 TF |
3757 | buf_rsp_map_failed: |
3758 | kfree(login_rsp_buffer); | |
3759 | buf_rsp_alloc_failed: | |
3760 | dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); | |
3761 | buf_map_failed: | |
3762 | kfree(login_buffer); | |
3763 | buf_alloc_failed: | |
20a8ab74 | 3764 | return -1; |
032c5e82 TF |
3765 | } |
3766 | ||
9c4eaabd TF |
3767 | static int send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, |
3768 | u32 len, u8 map_id) | |
032c5e82 TF |
3769 | { |
3770 | union ibmvnic_crq crq; | |
3771 | ||
3772 | memset(&crq, 0, sizeof(crq)); | |
3773 | crq.request_map.first = IBMVNIC_CRQ_CMD; | |
3774 | crq.request_map.cmd = REQUEST_MAP; | |
3775 | crq.request_map.map_id = map_id; | |
3776 | crq.request_map.ioba = cpu_to_be32(addr); | |
3777 | crq.request_map.len = cpu_to_be32(len); | |
9c4eaabd | 3778 | return ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
3779 | } |
3780 | ||
9c4eaabd | 3781 | static int send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) |
032c5e82 TF |
3782 | { |
3783 | union ibmvnic_crq crq; | |
3784 | ||
3785 | memset(&crq, 0, sizeof(crq)); | |
3786 | crq.request_unmap.first = IBMVNIC_CRQ_CMD; | |
3787 | crq.request_unmap.cmd = REQUEST_UNMAP; | |
3788 | crq.request_unmap.map_id = map_id; | |
9c4eaabd | 3789 | return ibmvnic_send_crq(adapter, &crq); |
032c5e82 TF |
3790 | } |
3791 | ||
3792 | static void send_map_query(struct ibmvnic_adapter *adapter) | |
3793 | { | |
3794 | union ibmvnic_crq crq; | |
3795 | ||
3796 | memset(&crq, 0, sizeof(crq)); | |
3797 | crq.query_map.first = IBMVNIC_CRQ_CMD; | |
3798 | crq.query_map.cmd = QUERY_MAP; | |
3799 | ibmvnic_send_crq(adapter, &crq); | |
3800 | } | |
3801 | ||
3802 | /* Send a series of CRQs requesting various capabilities of the VNIC server */ | |
3803 | static void send_cap_queries(struct ibmvnic_adapter *adapter) | |
3804 | { | |
3805 | union ibmvnic_crq crq; | |
3806 | ||
901e040a | 3807 | atomic_set(&adapter->running_cap_crqs, 0); |
032c5e82 TF |
3808 | memset(&crq, 0, sizeof(crq)); |
3809 | crq.query_capability.first = IBMVNIC_CRQ_CMD; | |
3810 | crq.query_capability.cmd = QUERY_CAPABILITY; | |
3811 | ||
3812 | crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); | |
901e040a | 3813 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3814 | ibmvnic_send_crq(adapter, &crq); |
3815 | ||
3816 | crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); | |
901e040a | 3817 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3818 | ibmvnic_send_crq(adapter, &crq); |
3819 | ||
3820 | crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); | |
901e040a | 3821 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3822 | ibmvnic_send_crq(adapter, &crq); |
3823 | ||
3824 | crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); | |
901e040a | 3825 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3826 | ibmvnic_send_crq(adapter, &crq); |
3827 | ||
3828 | crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); | |
901e040a | 3829 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3830 | ibmvnic_send_crq(adapter, &crq); |
3831 | ||
3832 | crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); | |
901e040a | 3833 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3834 | ibmvnic_send_crq(adapter, &crq); |
3835 | ||
3836 | crq.query_capability.capability = | |
3837 | cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 3838 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3839 | ibmvnic_send_crq(adapter, &crq); |
3840 | ||
3841 | crq.query_capability.capability = | |
3842 | cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 3843 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3844 | ibmvnic_send_crq(adapter, &crq); |
3845 | ||
3846 | crq.query_capability.capability = | |
3847 | cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 3848 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3849 | ibmvnic_send_crq(adapter, &crq); |
3850 | ||
3851 | crq.query_capability.capability = | |
3852 | cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); | |
901e040a | 3853 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3854 | ibmvnic_send_crq(adapter, &crq); |
3855 | ||
3856 | crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); | |
901e040a | 3857 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3858 | ibmvnic_send_crq(adapter, &crq); |
3859 | ||
3860 | crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); | |
901e040a | 3861 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3862 | ibmvnic_send_crq(adapter, &crq); |
3863 | ||
3864 | crq.query_capability.capability = cpu_to_be16(MIN_MTU); | |
901e040a | 3865 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3866 | ibmvnic_send_crq(adapter, &crq); |
3867 | ||
3868 | crq.query_capability.capability = cpu_to_be16(MAX_MTU); | |
901e040a | 3869 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3870 | ibmvnic_send_crq(adapter, &crq); |
3871 | ||
3872 | crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); | |
901e040a | 3873 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3874 | ibmvnic_send_crq(adapter, &crq); |
3875 | ||
3876 | crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); | |
901e040a | 3877 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3878 | ibmvnic_send_crq(adapter, &crq); |
3879 | ||
6052d5e2 MFV |
3880 | crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION); |
3881 | atomic_inc(&adapter->running_cap_crqs); | |
3882 | ibmvnic_send_crq(adapter, &crq); | |
3883 | ||
032c5e82 | 3884 | crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); |
901e040a | 3885 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3886 | ibmvnic_send_crq(adapter, &crq); |
3887 | ||
3888 | crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); | |
901e040a | 3889 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3890 | ibmvnic_send_crq(adapter, &crq); |
3891 | ||
3892 | crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); | |
901e040a | 3893 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3894 | ibmvnic_send_crq(adapter, &crq); |
3895 | ||
3896 | crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); | |
901e040a | 3897 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3898 | ibmvnic_send_crq(adapter, &crq); |
3899 | ||
3900 | crq.query_capability.capability = | |
3901 | cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); | |
901e040a | 3902 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3903 | ibmvnic_send_crq(adapter, &crq); |
3904 | ||
3905 | crq.query_capability.capability = | |
3906 | cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); | |
901e040a | 3907 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3908 | ibmvnic_send_crq(adapter, &crq); |
3909 | ||
3910 | crq.query_capability.capability = | |
3911 | cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); | |
901e040a | 3912 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3913 | ibmvnic_send_crq(adapter, &crq); |
3914 | ||
3915 | crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); | |
901e040a | 3916 | atomic_inc(&adapter->running_cap_crqs); |
032c5e82 TF |
3917 | ibmvnic_send_crq(adapter, &crq); |
3918 | } | |
3919 | ||
4e6759be DANR |
3920 | static void handle_vpd_size_rsp(union ibmvnic_crq *crq, |
3921 | struct ibmvnic_adapter *adapter) | |
3922 | { | |
3923 | struct device *dev = &adapter->vdev->dev; | |
3924 | ||
3925 | if (crq->get_vpd_size_rsp.rc.code) { | |
3926 | dev_err(dev, "Error retrieving VPD size, rc=%x\n", | |
3927 | crq->get_vpd_size_rsp.rc.code); | |
3928 | complete(&adapter->fw_done); | |
3929 | return; | |
3930 | } | |
3931 | ||
3932 | adapter->vpd->len = be64_to_cpu(crq->get_vpd_size_rsp.len); | |
3933 | complete(&adapter->fw_done); | |
3934 | } | |
3935 | ||
3936 | static void handle_vpd_rsp(union ibmvnic_crq *crq, | |
3937 | struct ibmvnic_adapter *adapter) | |
3938 | { | |
3939 | struct device *dev = &adapter->vdev->dev; | |
21a2545b | 3940 | unsigned char *substr = NULL; |
4e6759be DANR |
3941 | u8 fw_level_len = 0; |
3942 | ||
3943 | memset(adapter->fw_version, 0, 32); | |
3944 | ||
3945 | dma_unmap_single(dev, adapter->vpd->dma_addr, adapter->vpd->len, | |
3946 | DMA_FROM_DEVICE); | |
3947 | ||
3948 | if (crq->get_vpd_rsp.rc.code) { | |
3949 | dev_err(dev, "Error retrieving VPD from device, rc=%x\n", | |
3950 | crq->get_vpd_rsp.rc.code); | |
3951 | goto complete; | |
3952 | } | |
3953 | ||
3954 | /* get the position of the firmware version info | |
3955 | * located after the ASCII 'RM' substring in the buffer | |
3956 | */ | |
3957 | substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len); | |
3958 | if (!substr) { | |
a107311d | 3959 | dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n"); |
4e6759be DANR |
3960 | goto complete; |
3961 | } | |
3962 | ||
3963 | /* get length of firmware level ASCII substring */ | |
3964 | if ((substr + 2) < (adapter->vpd->buff + adapter->vpd->len)) { | |
3965 | fw_level_len = *(substr + 2); | |
3966 | } else { | |
3967 | dev_info(dev, "Length of FW substr extrapolated VDP buff\n"); | |
3968 | goto complete; | |
3969 | } | |
3970 | ||
3971 | /* copy firmware version string from vpd into adapter */ | |
3972 | if ((substr + 3 + fw_level_len) < | |
3973 | (adapter->vpd->buff + adapter->vpd->len)) { | |
21a2545b | 3974 | strncpy((char *)adapter->fw_version, substr + 3, fw_level_len); |
4e6759be DANR |
3975 | } else { |
3976 | dev_info(dev, "FW substr extrapolated VPD buff\n"); | |
3977 | } | |
3978 | ||
3979 | complete: | |
21a2545b DANR |
3980 | if (adapter->fw_version[0] == '\0') |
3981 | strncpy((char *)adapter->fw_version, "N/A", 3 * sizeof(char)); | |
4e6759be DANR |
3982 | complete(&adapter->fw_done); |
3983 | } | |
3984 | ||
032c5e82 TF |
3985 | static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) |
3986 | { | |
3987 | struct device *dev = &adapter->vdev->dev; | |
3988 | struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; | |
dde746a3 | 3989 | netdev_features_t old_hw_features = 0; |
032c5e82 TF |
3990 | union ibmvnic_crq crq; |
3991 | int i; | |
3992 | ||
3993 | dma_unmap_single(dev, adapter->ip_offload_tok, | |
3994 | sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); | |
3995 | ||
3996 | netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); | |
3997 | for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) | |
3998 | netdev_dbg(adapter->netdev, "%016lx\n", | |
3999 | ((unsigned long int *)(buf))[i]); | |
4000 | ||
4001 | netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); | |
4002 | netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); | |
4003 | netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", | |
4004 | buf->tcp_ipv4_chksum); | |
4005 | netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", | |
4006 | buf->tcp_ipv6_chksum); | |
4007 | netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", | |
4008 | buf->udp_ipv4_chksum); | |
4009 | netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", | |
4010 | buf->udp_ipv6_chksum); | |
4011 | netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", | |
4012 | buf->large_tx_ipv4); | |
4013 | netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", | |
4014 | buf->large_tx_ipv6); | |
4015 | netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", | |
4016 | buf->large_rx_ipv4); | |
4017 | netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", | |
4018 | buf->large_rx_ipv6); | |
4019 | netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", | |
4020 | buf->max_ipv4_header_size); | |
4021 | netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", | |
4022 | buf->max_ipv6_header_size); | |
4023 | netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", | |
4024 | buf->max_tcp_header_size); | |
4025 | netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", | |
4026 | buf->max_udp_header_size); | |
4027 | netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", | |
4028 | buf->max_large_tx_size); | |
4029 | netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", | |
4030 | buf->max_large_rx_size); | |
4031 | netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", | |
4032 | buf->ipv6_extension_header); | |
4033 | netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", | |
4034 | buf->tcp_pseudosum_req); | |
4035 | netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", | |
4036 | buf->num_ipv6_ext_headers); | |
4037 | netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", | |
4038 | buf->off_ipv6_ext_headers); | |
4039 | ||
4040 | adapter->ip_offload_ctrl_tok = | |
4041 | dma_map_single(dev, &adapter->ip_offload_ctrl, | |
4042 | sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); | |
4043 | ||
4044 | if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { | |
4045 | dev_err(dev, "Couldn't map ip offload control buffer\n"); | |
4046 | return; | |
4047 | } | |
4048 | ||
f6897943 TF |
4049 | adapter->ip_offload_ctrl.len = |
4050 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
032c5e82 | 4051 | adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); |
f6897943 TF |
4052 | adapter->ip_offload_ctrl.ipv4_chksum = buf->ipv4_chksum; |
4053 | adapter->ip_offload_ctrl.ipv6_chksum = buf->ipv6_chksum; | |
032c5e82 TF |
4054 | adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; |
4055 | adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; | |
4056 | adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; | |
4057 | adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; | |
fdb06105 TF |
4058 | adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4; |
4059 | adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6; | |
032c5e82 | 4060 | |
fdb06105 | 4061 | /* large_rx disabled for now, additional features needed */ |
032c5e82 TF |
4062 | adapter->ip_offload_ctrl.large_rx_ipv4 = 0; |
4063 | adapter->ip_offload_ctrl.large_rx_ipv6 = 0; | |
4064 | ||
dde746a3 TF |
4065 | if (adapter->state != VNIC_PROBING) { |
4066 | old_hw_features = adapter->netdev->hw_features; | |
4067 | adapter->netdev->hw_features = 0; | |
4068 | } | |
4069 | ||
b66b7bd2 | 4070 | adapter->netdev->hw_features = NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; |
032c5e82 TF |
4071 | |
4072 | if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) | |
dde746a3 | 4073 | adapter->netdev->hw_features |= NETIF_F_IP_CSUM; |
032c5e82 TF |
4074 | |
4075 | if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) | |
dde746a3 | 4076 | adapter->netdev->hw_features |= NETIF_F_IPV6_CSUM; |
032c5e82 | 4077 | |
9be02cdf TF |
4078 | if ((adapter->netdev->features & |
4079 | (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) | |
dde746a3 | 4080 | adapter->netdev->hw_features |= NETIF_F_RXCSUM; |
9be02cdf | 4081 | |
fdb06105 | 4082 | if (buf->large_tx_ipv4) |
dde746a3 | 4083 | adapter->netdev->hw_features |= NETIF_F_TSO; |
fdb06105 | 4084 | if (buf->large_tx_ipv6) |
dde746a3 | 4085 | adapter->netdev->hw_features |= NETIF_F_TSO6; |
fdb06105 | 4086 | |
dde746a3 TF |
4087 | if (adapter->state == VNIC_PROBING) { |
4088 | adapter->netdev->features |= adapter->netdev->hw_features; | |
4089 | } else if (old_hw_features != adapter->netdev->hw_features) { | |
4090 | netdev_features_t tmp = 0; | |
4091 | ||
4092 | /* disable features no longer supported */ | |
4093 | adapter->netdev->features &= adapter->netdev->hw_features; | |
4094 | /* turn on features now supported if previously enabled */ | |
4095 | tmp = (old_hw_features ^ adapter->netdev->hw_features) & | |
4096 | adapter->netdev->hw_features; | |
4097 | adapter->netdev->features |= | |
4098 | tmp & adapter->netdev->wanted_features; | |
4099 | } | |
aa0bf851 | 4100 | |
032c5e82 TF |
4101 | memset(&crq, 0, sizeof(crq)); |
4102 | crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; | |
4103 | crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; | |
4104 | crq.control_ip_offload.len = | |
4105 | cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); | |
4106 | crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); | |
4107 | ibmvnic_send_crq(adapter, &crq); | |
4108 | } | |
4109 | ||
c9008d33 TF |
4110 | static const char *ibmvnic_fw_err_cause(u16 cause) |
4111 | { | |
4112 | switch (cause) { | |
4113 | case ADAPTER_PROBLEM: | |
4114 | return "adapter problem"; | |
4115 | case BUS_PROBLEM: | |
4116 | return "bus problem"; | |
4117 | case FW_PROBLEM: | |
4118 | return "firmware problem"; | |
4119 | case DD_PROBLEM: | |
4120 | return "device driver problem"; | |
4121 | case EEH_RECOVERY: | |
4122 | return "EEH recovery"; | |
4123 | case FW_UPDATED: | |
4124 | return "firmware updated"; | |
4125 | case LOW_MEMORY: | |
4126 | return "low Memory"; | |
4127 | default: | |
4128 | return "unknown"; | |
4129 | } | |
4130 | } | |
4131 | ||
2f9de9ba NF |
4132 | static void handle_error_indication(union ibmvnic_crq *crq, |
4133 | struct ibmvnic_adapter *adapter) | |
4134 | { | |
4135 | struct device *dev = &adapter->vdev->dev; | |
c9008d33 TF |
4136 | u16 cause; |
4137 | ||
4138 | cause = be16_to_cpu(crq->error_indication.error_cause); | |
2f9de9ba | 4139 | |
c9008d33 TF |
4140 | dev_warn_ratelimited(dev, |
4141 | "Firmware reports %serror, cause: %s. Starting recovery...\n", | |
4142 | crq->error_indication.flags | |
4143 | & IBMVNIC_FATAL_ERROR ? "FATAL " : "", | |
4144 | ibmvnic_fw_err_cause(cause)); | |
2f9de9ba | 4145 | |
ed651a10 NF |
4146 | if (crq->error_indication.flags & IBMVNIC_FATAL_ERROR) |
4147 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); | |
8cb31cfc JA |
4148 | else |
4149 | ibmvnic_reset(adapter, VNIC_RESET_NON_FATAL); | |
032c5e82 TF |
4150 | } |
4151 | ||
f813614f TF |
4152 | static int handle_change_mac_rsp(union ibmvnic_crq *crq, |
4153 | struct ibmvnic_adapter *adapter) | |
032c5e82 TF |
4154 | { |
4155 | struct net_device *netdev = adapter->netdev; | |
4156 | struct device *dev = &adapter->vdev->dev; | |
4157 | long rc; | |
4158 | ||
4159 | rc = crq->change_mac_addr_rsp.rc.code; | |
4160 | if (rc) { | |
4161 | dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); | |
f813614f | 4162 | goto out; |
032c5e82 | 4163 | } |
62740e97 TF |
4164 | ether_addr_copy(netdev->dev_addr, |
4165 | &crq->change_mac_addr_rsp.mac_addr[0]); | |
f813614f TF |
4166 | out: |
4167 | complete(&adapter->fw_done); | |
4168 | return rc; | |
032c5e82 TF |
4169 | } |
4170 | ||
4171 | static void handle_request_cap_rsp(union ibmvnic_crq *crq, | |
4172 | struct ibmvnic_adapter *adapter) | |
4173 | { | |
4174 | struct device *dev = &adapter->vdev->dev; | |
4175 | u64 *req_value; | |
4176 | char *name; | |
4177 | ||
901e040a | 4178 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 TF |
4179 | switch (be16_to_cpu(crq->request_capability_rsp.capability)) { |
4180 | case REQ_TX_QUEUES: | |
4181 | req_value = &adapter->req_tx_queues; | |
4182 | name = "tx"; | |
4183 | break; | |
4184 | case REQ_RX_QUEUES: | |
4185 | req_value = &adapter->req_rx_queues; | |
4186 | name = "rx"; | |
4187 | break; | |
4188 | case REQ_RX_ADD_QUEUES: | |
4189 | req_value = &adapter->req_rx_add_queues; | |
4190 | name = "rx_add"; | |
4191 | break; | |
4192 | case REQ_TX_ENTRIES_PER_SUBCRQ: | |
4193 | req_value = &adapter->req_tx_entries_per_subcrq; | |
4194 | name = "tx_entries_per_subcrq"; | |
4195 | break; | |
4196 | case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: | |
4197 | req_value = &adapter->req_rx_add_entries_per_subcrq; | |
4198 | name = "rx_add_entries_per_subcrq"; | |
4199 | break; | |
4200 | case REQ_MTU: | |
4201 | req_value = &adapter->req_mtu; | |
4202 | name = "mtu"; | |
4203 | break; | |
4204 | case PROMISC_REQUESTED: | |
4205 | req_value = &adapter->promisc; | |
4206 | name = "promisc"; | |
4207 | break; | |
4208 | default: | |
4209 | dev_err(dev, "Got invalid cap request rsp %d\n", | |
4210 | crq->request_capability.capability); | |
4211 | return; | |
4212 | } | |
4213 | ||
4214 | switch (crq->request_capability_rsp.rc.code) { | |
4215 | case SUCCESS: | |
4216 | break; | |
4217 | case PARTIALSUCCESS: | |
4218 | dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", | |
4219 | *req_value, | |
28f4d165 | 4220 | (long int)be64_to_cpu(crq->request_capability_rsp. |
032c5e82 | 4221 | number), name); |
e7913803 JA |
4222 | |
4223 | if (be16_to_cpu(crq->request_capability_rsp.capability) == | |
4224 | REQ_MTU) { | |
4225 | pr_err("mtu of %llu is not supported. Reverting.\n", | |
4226 | *req_value); | |
4227 | *req_value = adapter->fallback.mtu; | |
4228 | } else { | |
4229 | *req_value = | |
4230 | be64_to_cpu(crq->request_capability_rsp.number); | |
4231 | } | |
4232 | ||
d346b9bc | 4233 | ibmvnic_send_req_caps(adapter, 1); |
032c5e82 TF |
4234 | return; |
4235 | default: | |
4236 | dev_err(dev, "Error %d in request cap rsp\n", | |
4237 | crq->request_capability_rsp.rc.code); | |
4238 | return; | |
4239 | } | |
4240 | ||
4241 | /* Done receiving requested capabilities, query IP offload support */ | |
901e040a | 4242 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
032c5e82 TF |
4243 | union ibmvnic_crq newcrq; |
4244 | int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); | |
4245 | struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = | |
4246 | &adapter->ip_offload_buf; | |
4247 | ||
249168ad | 4248 | adapter->wait_capability = false; |
032c5e82 TF |
4249 | adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, |
4250 | buf_sz, | |
4251 | DMA_FROM_DEVICE); | |
4252 | ||
4253 | if (dma_mapping_error(dev, adapter->ip_offload_tok)) { | |
4254 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
4255 | dev_err(dev, "Couldn't map offload buffer\n"); | |
4256 | return; | |
4257 | } | |
4258 | ||
4259 | memset(&newcrq, 0, sizeof(newcrq)); | |
4260 | newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; | |
4261 | newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; | |
4262 | newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); | |
4263 | newcrq.query_ip_offload.ioba = | |
4264 | cpu_to_be32(adapter->ip_offload_tok); | |
4265 | ||
4266 | ibmvnic_send_crq(adapter, &newcrq); | |
4267 | } | |
4268 | } | |
4269 | ||
4270 | static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, | |
4271 | struct ibmvnic_adapter *adapter) | |
4272 | { | |
4273 | struct device *dev = &adapter->vdev->dev; | |
c26eba03 | 4274 | struct net_device *netdev = adapter->netdev; |
032c5e82 TF |
4275 | struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; |
4276 | struct ibmvnic_login_buffer *login = adapter->login_buf; | |
032c5e82 TF |
4277 | int i; |
4278 | ||
4279 | dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, | |
37e40fa8 | 4280 | DMA_TO_DEVICE); |
032c5e82 | 4281 | dma_unmap_single(dev, adapter->login_rsp_buf_token, |
37e40fa8 | 4282 | adapter->login_rsp_buf_sz, DMA_FROM_DEVICE); |
032c5e82 | 4283 | |
498cd8e4 JA |
4284 | /* If the number of queues requested can't be allocated by the |
4285 | * server, the login response will return with code 1. We will need | |
4286 | * to resend the login buffer with fewer queues requested. | |
4287 | */ | |
4288 | if (login_rsp_crq->generic.rc.code) { | |
64d92aa2 | 4289 | adapter->init_done_rc = login_rsp_crq->generic.rc.code; |
498cd8e4 JA |
4290 | complete(&adapter->init_done); |
4291 | return 0; | |
4292 | } | |
4293 | ||
c26eba03 JA |
4294 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
4295 | ||
032c5e82 TF |
4296 | netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); |
4297 | for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { | |
4298 | netdev_dbg(adapter->netdev, "%016lx\n", | |
4299 | ((unsigned long int *)(adapter->login_rsp_buf))[i]); | |
4300 | } | |
4301 | ||
4302 | /* Sanity checks */ | |
4303 | if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || | |
4304 | (be32_to_cpu(login->num_rxcomp_subcrqs) * | |
4305 | adapter->req_rx_add_queues != | |
4306 | be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { | |
4307 | dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); | |
4308 | ibmvnic_remove(adapter->vdev); | |
4309 | return -EIO; | |
4310 | } | |
a2c0f039 | 4311 | release_login_buffer(adapter); |
032c5e82 TF |
4312 | complete(&adapter->init_done); |
4313 | ||
032c5e82 TF |
4314 | return 0; |
4315 | } | |
4316 | ||
032c5e82 TF |
4317 | static void handle_request_unmap_rsp(union ibmvnic_crq *crq, |
4318 | struct ibmvnic_adapter *adapter) | |
4319 | { | |
4320 | struct device *dev = &adapter->vdev->dev; | |
4321 | long rc; | |
4322 | ||
4323 | rc = crq->request_unmap_rsp.rc.code; | |
4324 | if (rc) | |
4325 | dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); | |
4326 | } | |
4327 | ||
4328 | static void handle_query_map_rsp(union ibmvnic_crq *crq, | |
4329 | struct ibmvnic_adapter *adapter) | |
4330 | { | |
4331 | struct net_device *netdev = adapter->netdev; | |
4332 | struct device *dev = &adapter->vdev->dev; | |
4333 | long rc; | |
4334 | ||
4335 | rc = crq->query_map_rsp.rc.code; | |
4336 | if (rc) { | |
4337 | dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); | |
4338 | return; | |
4339 | } | |
4340 | netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", | |
4341 | crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, | |
4342 | crq->query_map_rsp.free_pages); | |
4343 | } | |
4344 | ||
4345 | static void handle_query_cap_rsp(union ibmvnic_crq *crq, | |
4346 | struct ibmvnic_adapter *adapter) | |
4347 | { | |
4348 | struct net_device *netdev = adapter->netdev; | |
4349 | struct device *dev = &adapter->vdev->dev; | |
4350 | long rc; | |
4351 | ||
901e040a | 4352 | atomic_dec(&adapter->running_cap_crqs); |
032c5e82 | 4353 | netdev_dbg(netdev, "Outstanding queries: %d\n", |
901e040a | 4354 | atomic_read(&adapter->running_cap_crqs)); |
032c5e82 TF |
4355 | rc = crq->query_capability.rc.code; |
4356 | if (rc) { | |
4357 | dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); | |
4358 | goto out; | |
4359 | } | |
4360 | ||
4361 | switch (be16_to_cpu(crq->query_capability.capability)) { | |
4362 | case MIN_TX_QUEUES: | |
4363 | adapter->min_tx_queues = | |
de89e854 | 4364 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4365 | netdev_dbg(netdev, "min_tx_queues = %lld\n", |
4366 | adapter->min_tx_queues); | |
4367 | break; | |
4368 | case MIN_RX_QUEUES: | |
4369 | adapter->min_rx_queues = | |
de89e854 | 4370 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4371 | netdev_dbg(netdev, "min_rx_queues = %lld\n", |
4372 | adapter->min_rx_queues); | |
4373 | break; | |
4374 | case MIN_RX_ADD_QUEUES: | |
4375 | adapter->min_rx_add_queues = | |
de89e854 | 4376 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4377 | netdev_dbg(netdev, "min_rx_add_queues = %lld\n", |
4378 | adapter->min_rx_add_queues); | |
4379 | break; | |
4380 | case MAX_TX_QUEUES: | |
4381 | adapter->max_tx_queues = | |
de89e854 | 4382 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4383 | netdev_dbg(netdev, "max_tx_queues = %lld\n", |
4384 | adapter->max_tx_queues); | |
4385 | break; | |
4386 | case MAX_RX_QUEUES: | |
4387 | adapter->max_rx_queues = | |
de89e854 | 4388 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4389 | netdev_dbg(netdev, "max_rx_queues = %lld\n", |
4390 | adapter->max_rx_queues); | |
4391 | break; | |
4392 | case MAX_RX_ADD_QUEUES: | |
4393 | adapter->max_rx_add_queues = | |
de89e854 | 4394 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4395 | netdev_dbg(netdev, "max_rx_add_queues = %lld\n", |
4396 | adapter->max_rx_add_queues); | |
4397 | break; | |
4398 | case MIN_TX_ENTRIES_PER_SUBCRQ: | |
4399 | adapter->min_tx_entries_per_subcrq = | |
de89e854 | 4400 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4401 | netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", |
4402 | adapter->min_tx_entries_per_subcrq); | |
4403 | break; | |
4404 | case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: | |
4405 | adapter->min_rx_add_entries_per_subcrq = | |
de89e854 | 4406 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4407 | netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", |
4408 | adapter->min_rx_add_entries_per_subcrq); | |
4409 | break; | |
4410 | case MAX_TX_ENTRIES_PER_SUBCRQ: | |
4411 | adapter->max_tx_entries_per_subcrq = | |
de89e854 | 4412 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4413 | netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", |
4414 | adapter->max_tx_entries_per_subcrq); | |
4415 | break; | |
4416 | case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: | |
4417 | adapter->max_rx_add_entries_per_subcrq = | |
de89e854 | 4418 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4419 | netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", |
4420 | adapter->max_rx_add_entries_per_subcrq); | |
4421 | break; | |
4422 | case TCP_IP_OFFLOAD: | |
4423 | adapter->tcp_ip_offload = | |
de89e854 | 4424 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4425 | netdev_dbg(netdev, "tcp_ip_offload = %lld\n", |
4426 | adapter->tcp_ip_offload); | |
4427 | break; | |
4428 | case PROMISC_SUPPORTED: | |
4429 | adapter->promisc_supported = | |
de89e854 | 4430 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4431 | netdev_dbg(netdev, "promisc_supported = %lld\n", |
4432 | adapter->promisc_supported); | |
4433 | break; | |
4434 | case MIN_MTU: | |
de89e854 | 4435 | adapter->min_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 4436 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
032c5e82 TF |
4437 | netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); |
4438 | break; | |
4439 | case MAX_MTU: | |
de89e854 | 4440 | adapter->max_mtu = be64_to_cpu(crq->query_capability.number); |
f39f0d1e | 4441 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; |
032c5e82 TF |
4442 | netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); |
4443 | break; | |
4444 | case MAX_MULTICAST_FILTERS: | |
4445 | adapter->max_multicast_filters = | |
de89e854 | 4446 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4447 | netdev_dbg(netdev, "max_multicast_filters = %lld\n", |
4448 | adapter->max_multicast_filters); | |
4449 | break; | |
4450 | case VLAN_HEADER_INSERTION: | |
4451 | adapter->vlan_header_insertion = | |
de89e854 | 4452 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4453 | if (adapter->vlan_header_insertion) |
4454 | netdev->features |= NETIF_F_HW_VLAN_STAG_TX; | |
4455 | netdev_dbg(netdev, "vlan_header_insertion = %lld\n", | |
4456 | adapter->vlan_header_insertion); | |
4457 | break; | |
6052d5e2 MFV |
4458 | case RX_VLAN_HEADER_INSERTION: |
4459 | adapter->rx_vlan_header_insertion = | |
4460 | be64_to_cpu(crq->query_capability.number); | |
4461 | netdev_dbg(netdev, "rx_vlan_header_insertion = %lld\n", | |
4462 | adapter->rx_vlan_header_insertion); | |
4463 | break; | |
032c5e82 TF |
4464 | case MAX_TX_SG_ENTRIES: |
4465 | adapter->max_tx_sg_entries = | |
de89e854 | 4466 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4467 | netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", |
4468 | adapter->max_tx_sg_entries); | |
4469 | break; | |
4470 | case RX_SG_SUPPORTED: | |
4471 | adapter->rx_sg_supported = | |
de89e854 | 4472 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4473 | netdev_dbg(netdev, "rx_sg_supported = %lld\n", |
4474 | adapter->rx_sg_supported); | |
4475 | break; | |
4476 | case OPT_TX_COMP_SUB_QUEUES: | |
4477 | adapter->opt_tx_comp_sub_queues = | |
de89e854 | 4478 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4479 | netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", |
4480 | adapter->opt_tx_comp_sub_queues); | |
4481 | break; | |
4482 | case OPT_RX_COMP_QUEUES: | |
4483 | adapter->opt_rx_comp_queues = | |
de89e854 | 4484 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4485 | netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", |
4486 | adapter->opt_rx_comp_queues); | |
4487 | break; | |
4488 | case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: | |
4489 | adapter->opt_rx_bufadd_q_per_rx_comp_q = | |
de89e854 | 4490 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4491 | netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", |
4492 | adapter->opt_rx_bufadd_q_per_rx_comp_q); | |
4493 | break; | |
4494 | case OPT_TX_ENTRIES_PER_SUBCRQ: | |
4495 | adapter->opt_tx_entries_per_subcrq = | |
de89e854 | 4496 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4497 | netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", |
4498 | adapter->opt_tx_entries_per_subcrq); | |
4499 | break; | |
4500 | case OPT_RXBA_ENTRIES_PER_SUBCRQ: | |
4501 | adapter->opt_rxba_entries_per_subcrq = | |
de89e854 | 4502 | be64_to_cpu(crq->query_capability.number); |
032c5e82 TF |
4503 | netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", |
4504 | adapter->opt_rxba_entries_per_subcrq); | |
4505 | break; | |
4506 | case TX_RX_DESC_REQ: | |
4507 | adapter->tx_rx_desc_req = crq->query_capability.number; | |
4508 | netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", | |
4509 | adapter->tx_rx_desc_req); | |
4510 | break; | |
4511 | ||
4512 | default: | |
4513 | netdev_err(netdev, "Got invalid cap rsp %d\n", | |
4514 | crq->query_capability.capability); | |
4515 | } | |
4516 | ||
4517 | out: | |
249168ad TF |
4518 | if (atomic_read(&adapter->running_cap_crqs) == 0) { |
4519 | adapter->wait_capability = false; | |
d346b9bc | 4520 | ibmvnic_send_req_caps(adapter, 0); |
249168ad | 4521 | } |
032c5e82 TF |
4522 | } |
4523 | ||
f8d6ae0d MFV |
4524 | static int send_query_phys_parms(struct ibmvnic_adapter *adapter) |
4525 | { | |
4526 | union ibmvnic_crq crq; | |
4527 | int rc; | |
4528 | ||
4529 | memset(&crq, 0, sizeof(crq)); | |
4530 | crq.query_phys_parms.first = IBMVNIC_CRQ_CMD; | |
4531 | crq.query_phys_parms.cmd = QUERY_PHYS_PARMS; | |
ff25dcb9 TF |
4532 | |
4533 | mutex_lock(&adapter->fw_lock); | |
4534 | adapter->fw_done_rc = 0; | |
070eca95 | 4535 | reinit_completion(&adapter->fw_done); |
ff25dcb9 | 4536 | |
f8d6ae0d | 4537 | rc = ibmvnic_send_crq(adapter, &crq); |
ff25dcb9 TF |
4538 | if (rc) { |
4539 | mutex_unlock(&adapter->fw_lock); | |
f8d6ae0d | 4540 | return rc; |
ff25dcb9 | 4541 | } |
476d96ca TF |
4542 | |
4543 | rc = ibmvnic_wait_for_completion(adapter, &adapter->fw_done, 10000); | |
ff25dcb9 TF |
4544 | if (rc) { |
4545 | mutex_unlock(&adapter->fw_lock); | |
476d96ca | 4546 | return rc; |
ff25dcb9 | 4547 | } |
476d96ca | 4548 | |
ff25dcb9 | 4549 | mutex_unlock(&adapter->fw_lock); |
f8d6ae0d MFV |
4550 | return adapter->fw_done_rc ? -EIO : 0; |
4551 | } | |
4552 | ||
4553 | static int handle_query_phys_parms_rsp(union ibmvnic_crq *crq, | |
4554 | struct ibmvnic_adapter *adapter) | |
4555 | { | |
4556 | struct net_device *netdev = adapter->netdev; | |
4557 | int rc; | |
dd0f9d89 | 4558 | __be32 rspeed = cpu_to_be32(crq->query_phys_parms_rsp.speed); |
f8d6ae0d MFV |
4559 | |
4560 | rc = crq->query_phys_parms_rsp.rc.code; | |
4561 | if (rc) { | |
4562 | netdev_err(netdev, "Error %d in QUERY_PHYS_PARMS\n", rc); | |
4563 | return rc; | |
4564 | } | |
dd0f9d89 | 4565 | switch (rspeed) { |
f8d6ae0d MFV |
4566 | case IBMVNIC_10MBPS: |
4567 | adapter->speed = SPEED_10; | |
4568 | break; | |
4569 | case IBMVNIC_100MBPS: | |
4570 | adapter->speed = SPEED_100; | |
4571 | break; | |
4572 | case IBMVNIC_1GBPS: | |
4573 | adapter->speed = SPEED_1000; | |
4574 | break; | |
4575 | case IBMVNIC_10GBP: | |
4576 | adapter->speed = SPEED_10000; | |
4577 | break; | |
4578 | case IBMVNIC_25GBPS: | |
4579 | adapter->speed = SPEED_25000; | |
4580 | break; | |
4581 | case IBMVNIC_40GBPS: | |
4582 | adapter->speed = SPEED_40000; | |
4583 | break; | |
4584 | case IBMVNIC_50GBPS: | |
4585 | adapter->speed = SPEED_50000; | |
4586 | break; | |
4587 | case IBMVNIC_100GBPS: | |
4588 | adapter->speed = SPEED_100000; | |
4589 | break; | |
4590 | default: | |
dd0f9d89 MFV |
4591 | if (netif_carrier_ok(netdev)) |
4592 | netdev_warn(netdev, "Unknown speed 0x%08x\n", rspeed); | |
f8d6ae0d MFV |
4593 | adapter->speed = SPEED_UNKNOWN; |
4594 | } | |
4595 | if (crq->query_phys_parms_rsp.flags1 & IBMVNIC_FULL_DUPLEX) | |
4596 | adapter->duplex = DUPLEX_FULL; | |
4597 | else if (crq->query_phys_parms_rsp.flags1 & IBMVNIC_HALF_DUPLEX) | |
4598 | adapter->duplex = DUPLEX_HALF; | |
4599 | else | |
4600 | adapter->duplex = DUPLEX_UNKNOWN; | |
4601 | ||
4602 | return rc; | |
4603 | } | |
4604 | ||
032c5e82 TF |
4605 | static void ibmvnic_handle_crq(union ibmvnic_crq *crq, |
4606 | struct ibmvnic_adapter *adapter) | |
4607 | { | |
4608 | struct ibmvnic_generic_crq *gen_crq = &crq->generic; | |
4609 | struct net_device *netdev = adapter->netdev; | |
4610 | struct device *dev = &adapter->vdev->dev; | |
993a82b0 | 4611 | u64 *u64_crq = (u64 *)crq; |
032c5e82 TF |
4612 | long rc; |
4613 | ||
4614 | netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", | |
993a82b0 MFV |
4615 | (unsigned long int)cpu_to_be64(u64_crq[0]), |
4616 | (unsigned long int)cpu_to_be64(u64_crq[1])); | |
032c5e82 TF |
4617 | switch (gen_crq->first) { |
4618 | case IBMVNIC_CRQ_INIT_RSP: | |
4619 | switch (gen_crq->cmd) { | |
4620 | case IBMVNIC_CRQ_INIT: | |
4621 | dev_info(dev, "Partner initialized\n"); | |
017892c1 | 4622 | adapter->from_passive_init = true; |
5a18e1e0 | 4623 | adapter->failover_pending = false; |
17c87058 TF |
4624 | if (!completion_done(&adapter->init_done)) { |
4625 | complete(&adapter->init_done); | |
4626 | adapter->init_done_rc = -EIO; | |
4627 | } | |
5a18e1e0 | 4628 | ibmvnic_reset(adapter, VNIC_RESET_FAILOVER); |
032c5e82 TF |
4629 | break; |
4630 | case IBMVNIC_CRQ_INIT_COMPLETE: | |
4631 | dev_info(dev, "Partner initialization complete\n"); | |
5153698e | 4632 | adapter->crq.active = true; |
032c5e82 TF |
4633 | send_version_xchg(adapter); |
4634 | break; | |
4635 | default: | |
4636 | dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); | |
4637 | } | |
4638 | return; | |
4639 | case IBMVNIC_CRQ_XPORT_EVENT: | |
ed651a10 | 4640 | netif_carrier_off(netdev); |
5153698e | 4641 | adapter->crq.active = false; |
2147e3d0 TF |
4642 | /* terminate any thread waiting for a response |
4643 | * from the device | |
4644 | */ | |
4645 | if (!completion_done(&adapter->fw_done)) { | |
4646 | adapter->fw_done_rc = -EIO; | |
4647 | complete(&adapter->fw_done); | |
4648 | } | |
4649 | if (!completion_done(&adapter->stats_done)) | |
4650 | complete(&adapter->stats_done); | |
7ed5b31f | 4651 | if (test_bit(0, &adapter->resetting)) |
2770a798 | 4652 | adapter->force_reset_recovery = true; |
032c5e82 | 4653 | if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { |
ed651a10 NF |
4654 | dev_info(dev, "Migrated, re-enabling adapter\n"); |
4655 | ibmvnic_reset(adapter, VNIC_RESET_MOBILITY); | |
dfad09a6 TF |
4656 | } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { |
4657 | dev_info(dev, "Backing device failover detected\n"); | |
5a18e1e0 | 4658 | adapter->failover_pending = true; |
032c5e82 TF |
4659 | } else { |
4660 | /* The adapter lost the connection */ | |
4661 | dev_err(dev, "Virtual Adapter failed (rc=%d)\n", | |
4662 | gen_crq->cmd); | |
ed651a10 | 4663 | ibmvnic_reset(adapter, VNIC_RESET_FATAL); |
032c5e82 TF |
4664 | } |
4665 | return; | |
4666 | case IBMVNIC_CRQ_CMD_RSP: | |
4667 | break; | |
4668 | default: | |
4669 | dev_err(dev, "Got an invalid msg type 0x%02x\n", | |
4670 | gen_crq->first); | |
4671 | return; | |
4672 | } | |
4673 | ||
4674 | switch (gen_crq->cmd) { | |
4675 | case VERSION_EXCHANGE_RSP: | |
4676 | rc = crq->version_exchange_rsp.rc.code; | |
4677 | if (rc) { | |
4678 | dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); | |
4679 | break; | |
4680 | } | |
4681 | dev_info(dev, "Partner protocol version is %d\n", | |
4682 | crq->version_exchange_rsp.version); | |
4683 | if (be16_to_cpu(crq->version_exchange_rsp.version) < | |
4684 | ibmvnic_version) | |
4685 | ibmvnic_version = | |
4686 | be16_to_cpu(crq->version_exchange_rsp.version); | |
4687 | send_cap_queries(adapter); | |
4688 | break; | |
4689 | case QUERY_CAPABILITY_RSP: | |
4690 | handle_query_cap_rsp(crq, adapter); | |
4691 | break; | |
4692 | case QUERY_MAP_RSP: | |
4693 | handle_query_map_rsp(crq, adapter); | |
4694 | break; | |
4695 | case REQUEST_MAP_RSP: | |
f3be0cbc TF |
4696 | adapter->fw_done_rc = crq->request_map_rsp.rc.code; |
4697 | complete(&adapter->fw_done); | |
032c5e82 TF |
4698 | break; |
4699 | case REQUEST_UNMAP_RSP: | |
4700 | handle_request_unmap_rsp(crq, adapter); | |
4701 | break; | |
4702 | case REQUEST_CAPABILITY_RSP: | |
4703 | handle_request_cap_rsp(crq, adapter); | |
4704 | break; | |
4705 | case LOGIN_RSP: | |
4706 | netdev_dbg(netdev, "Got Login Response\n"); | |
4707 | handle_login_rsp(crq, adapter); | |
4708 | break; | |
4709 | case LOGICAL_LINK_STATE_RSP: | |
53da09e9 NF |
4710 | netdev_dbg(netdev, |
4711 | "Got Logical Link State Response, state: %d rc: %d\n", | |
4712 | crq->logical_link_state_rsp.link_state, | |
4713 | crq->logical_link_state_rsp.rc.code); | |
032c5e82 TF |
4714 | adapter->logical_link_state = |
4715 | crq->logical_link_state_rsp.link_state; | |
53da09e9 NF |
4716 | adapter->init_done_rc = crq->logical_link_state_rsp.rc.code; |
4717 | complete(&adapter->init_done); | |
032c5e82 TF |
4718 | break; |
4719 | case LINK_STATE_INDICATION: | |
4720 | netdev_dbg(netdev, "Got Logical Link State Indication\n"); | |
4721 | adapter->phys_link_state = | |
4722 | crq->link_state_indication.phys_link_state; | |
4723 | adapter->logical_link_state = | |
4724 | crq->link_state_indication.logical_link_state; | |
0655f994 TF |
4725 | if (adapter->phys_link_state && adapter->logical_link_state) |
4726 | netif_carrier_on(netdev); | |
4727 | else | |
4728 | netif_carrier_off(netdev); | |
032c5e82 TF |
4729 | break; |
4730 | case CHANGE_MAC_ADDR_RSP: | |
4731 | netdev_dbg(netdev, "Got MAC address change Response\n"); | |
f813614f | 4732 | adapter->fw_done_rc = handle_change_mac_rsp(crq, adapter); |
032c5e82 TF |
4733 | break; |
4734 | case ERROR_INDICATION: | |
4735 | netdev_dbg(netdev, "Got Error Indication\n"); | |
4736 | handle_error_indication(crq, adapter); | |
4737 | break; | |
032c5e82 TF |
4738 | case REQUEST_STATISTICS_RSP: |
4739 | netdev_dbg(netdev, "Got Statistics Response\n"); | |
4740 | complete(&adapter->stats_done); | |
4741 | break; | |
032c5e82 TF |
4742 | case QUERY_IP_OFFLOAD_RSP: |
4743 | netdev_dbg(netdev, "Got Query IP offload Response\n"); | |
4744 | handle_query_ip_offload_rsp(adapter); | |
4745 | break; | |
4746 | case MULTICAST_CTRL_RSP: | |
4747 | netdev_dbg(netdev, "Got multicast control Response\n"); | |
4748 | break; | |
4749 | case CONTROL_IP_OFFLOAD_RSP: | |
4750 | netdev_dbg(netdev, "Got Control IP offload Response\n"); | |
4751 | dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, | |
4752 | sizeof(adapter->ip_offload_ctrl), | |
4753 | DMA_TO_DEVICE); | |
bd0b6723 | 4754 | complete(&adapter->init_done); |
032c5e82 | 4755 | break; |
032c5e82 TF |
4756 | case COLLECT_FW_TRACE_RSP: |
4757 | netdev_dbg(netdev, "Got Collect firmware trace Response\n"); | |
4758 | complete(&adapter->fw_done); | |
4759 | break; | |
4e6759be DANR |
4760 | case GET_VPD_SIZE_RSP: |
4761 | handle_vpd_size_rsp(crq, adapter); | |
4762 | break; | |
4763 | case GET_VPD_RSP: | |
4764 | handle_vpd_rsp(crq, adapter); | |
4765 | break; | |
f8d6ae0d MFV |
4766 | case QUERY_PHYS_PARMS_RSP: |
4767 | adapter->fw_done_rc = handle_query_phys_parms_rsp(crq, adapter); | |
4768 | complete(&adapter->fw_done); | |
4769 | break; | |
032c5e82 TF |
4770 | default: |
4771 | netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", | |
4772 | gen_crq->cmd); | |
4773 | } | |
4774 | } | |
4775 | ||
4776 | static irqreturn_t ibmvnic_interrupt(int irq, void *instance) | |
4777 | { | |
4778 | struct ibmvnic_adapter *adapter = instance; | |
6c267b3d | 4779 | |
6c267b3d | 4780 | tasklet_schedule(&adapter->tasklet); |
6c267b3d TF |
4781 | return IRQ_HANDLED; |
4782 | } | |
4783 | ||
4784 | static void ibmvnic_tasklet(void *data) | |
4785 | { | |
4786 | struct ibmvnic_adapter *adapter = data; | |
032c5e82 | 4787 | struct ibmvnic_crq_queue *queue = &adapter->crq; |
032c5e82 TF |
4788 | union ibmvnic_crq *crq; |
4789 | unsigned long flags; | |
4790 | bool done = false; | |
4791 | ||
4792 | spin_lock_irqsave(&queue->lock, flags); | |
032c5e82 TF |
4793 | while (!done) { |
4794 | /* Pull all the valid messages off the CRQ */ | |
4795 | while ((crq = ibmvnic_next_crq(adapter)) != NULL) { | |
4796 | ibmvnic_handle_crq(crq, adapter); | |
4797 | crq->generic.first = 0; | |
4798 | } | |
ed7ecbf7 BK |
4799 | |
4800 | /* remain in tasklet until all | |
4801 | * capabilities responses are received | |
4802 | */ | |
4803 | if (!adapter->wait_capability) | |
4804 | done = true; | |
032c5e82 | 4805 | } |
249168ad TF |
4806 | /* if capabilities CRQ's were sent in this tasklet, the following |
4807 | * tasklet must wait until all responses are received | |
4808 | */ | |
4809 | if (atomic_read(&adapter->running_cap_crqs) != 0) | |
4810 | adapter->wait_capability = true; | |
032c5e82 | 4811 | spin_unlock_irqrestore(&queue->lock, flags); |
032c5e82 TF |
4812 | } |
4813 | ||
4814 | static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) | |
4815 | { | |
4816 | struct vio_dev *vdev = adapter->vdev; | |
4817 | int rc; | |
4818 | ||
4819 | do { | |
4820 | rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); | |
4821 | } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4822 | ||
4823 | if (rc) | |
4824 | dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); | |
4825 | ||
4826 | return rc; | |
4827 | } | |
4828 | ||
4829 | static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) | |
4830 | { | |
4831 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
4832 | struct device *dev = &adapter->vdev->dev; | |
4833 | struct vio_dev *vdev = adapter->vdev; | |
4834 | int rc; | |
4835 | ||
4836 | /* Close the CRQ */ | |
4837 | do { | |
4838 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
4839 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4840 | ||
4841 | /* Clean out the queue */ | |
4842 | memset(crq->msgs, 0, PAGE_SIZE); | |
4843 | crq->cur = 0; | |
5153698e | 4844 | crq->active = false; |
032c5e82 TF |
4845 | |
4846 | /* And re-open it again */ | |
4847 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
4848 | crq->msg_token, PAGE_SIZE); | |
4849 | ||
4850 | if (rc == H_CLOSED) | |
4851 | /* Adapter is good, but other end is not ready */ | |
4852 | dev_warn(dev, "Partner adapter not ready\n"); | |
4853 | else if (rc != 0) | |
4854 | dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); | |
4855 | ||
4856 | return rc; | |
4857 | } | |
4858 | ||
f992887c | 4859 | static void release_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
4860 | { |
4861 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
4862 | struct vio_dev *vdev = adapter->vdev; | |
4863 | long rc; | |
4864 | ||
f992887c NF |
4865 | if (!crq->msgs) |
4866 | return; | |
4867 | ||
032c5e82 TF |
4868 | netdev_dbg(adapter->netdev, "Releasing CRQ\n"); |
4869 | free_irq(vdev->irq, adapter); | |
6c267b3d | 4870 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
4871 | do { |
4872 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
4873 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4874 | ||
4875 | dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, | |
4876 | DMA_BIDIRECTIONAL); | |
4877 | free_page((unsigned long)crq->msgs); | |
f992887c | 4878 | crq->msgs = NULL; |
5153698e | 4879 | crq->active = false; |
032c5e82 TF |
4880 | } |
4881 | ||
f992887c | 4882 | static int init_crq_queue(struct ibmvnic_adapter *adapter) |
032c5e82 TF |
4883 | { |
4884 | struct ibmvnic_crq_queue *crq = &adapter->crq; | |
4885 | struct device *dev = &adapter->vdev->dev; | |
4886 | struct vio_dev *vdev = adapter->vdev; | |
4887 | int rc, retrc = -ENOMEM; | |
4888 | ||
f992887c NF |
4889 | if (crq->msgs) |
4890 | return 0; | |
4891 | ||
032c5e82 TF |
4892 | crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); |
4893 | /* Should we allocate more than one page? */ | |
4894 | ||
4895 | if (!crq->msgs) | |
4896 | return -ENOMEM; | |
4897 | ||
4898 | crq->size = PAGE_SIZE / sizeof(*crq->msgs); | |
4899 | crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, | |
4900 | DMA_BIDIRECTIONAL); | |
4901 | if (dma_mapping_error(dev, crq->msg_token)) | |
4902 | goto map_failed; | |
4903 | ||
4904 | rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, | |
4905 | crq->msg_token, PAGE_SIZE); | |
4906 | ||
4907 | if (rc == H_RESOURCE) | |
4908 | /* maybe kexecing and resource is busy. try a reset */ | |
4909 | rc = ibmvnic_reset_crq(adapter); | |
4910 | retrc = rc; | |
4911 | ||
4912 | if (rc == H_CLOSED) { | |
4913 | dev_warn(dev, "Partner adapter not ready\n"); | |
4914 | } else if (rc) { | |
4915 | dev_warn(dev, "Error %d opening adapter\n", rc); | |
4916 | goto reg_crq_failed; | |
4917 | } | |
4918 | ||
4919 | retrc = 0; | |
4920 | ||
6c267b3d TF |
4921 | tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet, |
4922 | (unsigned long)adapter); | |
4923 | ||
032c5e82 | 4924 | netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); |
e56e2515 MFV |
4925 | snprintf(crq->name, sizeof(crq->name), "ibmvnic-%x", |
4926 | adapter->vdev->unit_address); | |
4927 | rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, crq->name, adapter); | |
032c5e82 TF |
4928 | if (rc) { |
4929 | dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", | |
4930 | vdev->irq, rc); | |
4931 | goto req_irq_failed; | |
4932 | } | |
4933 | ||
4934 | rc = vio_enable_interrupts(vdev); | |
4935 | if (rc) { | |
4936 | dev_err(dev, "Error %d enabling interrupts\n", rc); | |
4937 | goto req_irq_failed; | |
4938 | } | |
4939 | ||
4940 | crq->cur = 0; | |
4941 | spin_lock_init(&crq->lock); | |
4942 | ||
4943 | return retrc; | |
4944 | ||
4945 | req_irq_failed: | |
6c267b3d | 4946 | tasklet_kill(&adapter->tasklet); |
032c5e82 TF |
4947 | do { |
4948 | rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); | |
4949 | } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); | |
4950 | reg_crq_failed: | |
4951 | dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); | |
4952 | map_failed: | |
4953 | free_page((unsigned long)crq->msgs); | |
f992887c | 4954 | crq->msgs = NULL; |
032c5e82 TF |
4955 | return retrc; |
4956 | } | |
4957 | ||
8a348450 | 4958 | static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter) |
032c5e82 | 4959 | { |
f6ef6408 | 4960 | struct device *dev = &adapter->vdev->dev; |
ea22d51a | 4961 | unsigned long timeout = msecs_to_jiffies(30000); |
d7c0ef36 | 4962 | u64 old_num_rx_queues, old_num_tx_queues; |
f6ef6408 JA |
4963 | int rc; |
4964 | ||
017892c1 JA |
4965 | adapter->from_passive_init = false; |
4966 | ||
d7c0ef36 NF |
4967 | old_num_rx_queues = adapter->req_rx_queues; |
4968 | old_num_tx_queues = adapter->req_tx_queues; | |
4969 | ||
bbd669a8 | 4970 | reinit_completion(&adapter->init_done); |
6a2fb0e9 | 4971 | adapter->init_done_rc = 0; |
f6ef6408 JA |
4972 | ibmvnic_send_crq_init(adapter); |
4973 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
4974 | dev_err(dev, "Initialization sequence timed out\n"); | |
017892c1 JA |
4975 | return -1; |
4976 | } | |
4977 | ||
6a2fb0e9 NF |
4978 | if (adapter->init_done_rc) { |
4979 | release_crq_queue(adapter); | |
4980 | return adapter->init_done_rc; | |
4981 | } | |
4982 | ||
017892c1 JA |
4983 | if (adapter->from_passive_init) { |
4984 | adapter->state = VNIC_OPEN; | |
4985 | adapter->from_passive_init = false; | |
f6ef6408 JA |
4986 | return -1; |
4987 | } | |
4988 | ||
7ed5b31f | 4989 | if (test_bit(0, &adapter->resetting) && !adapter->wait_for_reset && |
30f79625 | 4990 | adapter->reset_reason != VNIC_RESET_MOBILITY) { |
d7c0ef36 NF |
4991 | if (adapter->req_rx_queues != old_num_rx_queues || |
4992 | adapter->req_tx_queues != old_num_tx_queues) { | |
4993 | release_sub_crqs(adapter, 0); | |
4994 | rc = init_sub_crqs(adapter); | |
4995 | } else { | |
4996 | rc = reset_sub_crq_queues(adapter); | |
4997 | } | |
4998 | } else { | |
57a49436 | 4999 | rc = init_sub_crqs(adapter); |
d7c0ef36 NF |
5000 | } |
5001 | ||
1bb3c739 NF |
5002 | if (rc) { |
5003 | dev_err(dev, "Initialization of sub crqs failed\n"); | |
5004 | release_crq_queue(adapter); | |
5df969c3 TF |
5005 | return rc; |
5006 | } | |
5007 | ||
5008 | rc = init_sub_crq_irqs(adapter); | |
5009 | if (rc) { | |
5010 | dev_err(dev, "Failed to initialize sub crq irqs\n"); | |
5011 | release_crq_queue(adapter); | |
1bb3c739 NF |
5012 | } |
5013 | ||
5014 | return rc; | |
f6ef6408 JA |
5015 | } |
5016 | ||
8a348450 TF |
5017 | static int ibmvnic_init(struct ibmvnic_adapter *adapter) |
5018 | { | |
5019 | struct device *dev = &adapter->vdev->dev; | |
5020 | unsigned long timeout = msecs_to_jiffies(30000); | |
5021 | int rc; | |
5022 | ||
5023 | adapter->from_passive_init = false; | |
5024 | ||
8a348450 TF |
5025 | adapter->init_done_rc = 0; |
5026 | ibmvnic_send_crq_init(adapter); | |
5027 | if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { | |
5028 | dev_err(dev, "Initialization sequence timed out\n"); | |
5029 | return -1; | |
5030 | } | |
5031 | ||
5032 | if (adapter->init_done_rc) { | |
5033 | release_crq_queue(adapter); | |
5034 | return adapter->init_done_rc; | |
5035 | } | |
5036 | ||
5037 | if (adapter->from_passive_init) { | |
5038 | adapter->state = VNIC_OPEN; | |
5039 | adapter->from_passive_init = false; | |
5040 | return -1; | |
5041 | } | |
5042 | ||
5043 | rc = init_sub_crqs(adapter); | |
5044 | if (rc) { | |
5045 | dev_err(dev, "Initialization of sub crqs failed\n"); | |
5046 | release_crq_queue(adapter); | |
5047 | return rc; | |
5048 | } | |
5049 | ||
5050 | rc = init_sub_crq_irqs(adapter); | |
5051 | if (rc) { | |
5052 | dev_err(dev, "Failed to initialize sub crq irqs\n"); | |
5053 | release_crq_queue(adapter); | |
5054 | } | |
5055 | ||
5056 | return rc; | |
5057 | } | |
5058 | ||
40c9db8a TF |
5059 | static struct device_attribute dev_attr_failover; |
5060 | ||
f6ef6408 JA |
5061 | static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) |
5062 | { | |
032c5e82 TF |
5063 | struct ibmvnic_adapter *adapter; |
5064 | struct net_device *netdev; | |
5065 | unsigned char *mac_addr_p; | |
032c5e82 TF |
5066 | int rc; |
5067 | ||
5068 | dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", | |
5069 | dev->unit_address); | |
5070 | ||
5071 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, | |
5072 | VETH_MAC_ADDR, NULL); | |
5073 | if (!mac_addr_p) { | |
5074 | dev_err(&dev->dev, | |
5075 | "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", | |
5076 | __FILE__, __LINE__); | |
5077 | return 0; | |
5078 | } | |
5079 | ||
5080 | netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), | |
d45cc3a4 | 5081 | IBMVNIC_MAX_QUEUES); |
032c5e82 TF |
5082 | if (!netdev) |
5083 | return -ENOMEM; | |
5084 | ||
5085 | adapter = netdev_priv(netdev); | |
90c8014c | 5086 | adapter->state = VNIC_PROBING; |
032c5e82 TF |
5087 | dev_set_drvdata(&dev->dev, netdev); |
5088 | adapter->vdev = dev; | |
5089 | adapter->netdev = netdev; | |
5090 | ||
5091 | ether_addr_copy(adapter->mac_addr, mac_addr_p); | |
5092 | ether_addr_copy(netdev->dev_addr, adapter->mac_addr); | |
5093 | netdev->irq = dev->irq; | |
5094 | netdev->netdev_ops = &ibmvnic_netdev_ops; | |
5095 | netdev->ethtool_ops = &ibmvnic_ethtool_ops; | |
5096 | SET_NETDEV_DEV(netdev, &dev->dev); | |
5097 | ||
5098 | spin_lock_init(&adapter->stats_lock); | |
5099 | ||
ed651a10 | 5100 | INIT_WORK(&adapter->ibmvnic_reset, __ibmvnic_reset); |
7ed5b31f JK |
5101 | INIT_DELAYED_WORK(&adapter->ibmvnic_delayed_reset, |
5102 | __ibmvnic_delayed_reset); | |
ed651a10 | 5103 | INIT_LIST_HEAD(&adapter->rwi_list); |
6c5c7489 | 5104 | spin_lock_init(&adapter->rwi_lock); |
7d7195a0 | 5105 | spin_lock_init(&adapter->state_lock); |
ff25dcb9 | 5106 | mutex_init(&adapter->fw_lock); |
bbd669a8 | 5107 | init_completion(&adapter->init_done); |
070eca95 TF |
5108 | init_completion(&adapter->fw_done); |
5109 | init_completion(&adapter->reset_done); | |
5110 | init_completion(&adapter->stats_done); | |
7ed5b31f | 5111 | clear_bit(0, &adapter->resetting); |
ed651a10 | 5112 | |
6a2fb0e9 | 5113 | do { |
30f79625 NF |
5114 | rc = init_crq_queue(adapter); |
5115 | if (rc) { | |
5116 | dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", | |
5117 | rc); | |
5118 | goto ibmvnic_init_fail; | |
5119 | } | |
5120 | ||
6a2fb0e9 | 5121 | rc = ibmvnic_init(adapter); |
7c1885ae NF |
5122 | if (rc && rc != EAGAIN) |
5123 | goto ibmvnic_init_fail; | |
6a2fb0e9 | 5124 | } while (rc == EAGAIN); |
032c5e82 | 5125 | |
07184213 TF |
5126 | rc = init_stats_buffers(adapter); |
5127 | if (rc) | |
5128 | goto ibmvnic_init_fail; | |
5129 | ||
5130 | rc = init_stats_token(adapter); | |
5131 | if (rc) | |
5132 | goto ibmvnic_stats_fail; | |
5133 | ||
f39f0d1e | 5134 | netdev->mtu = adapter->req_mtu - ETH_HLEN; |
c26eba03 JA |
5135 | netdev->min_mtu = adapter->min_mtu - ETH_HLEN; |
5136 | netdev->max_mtu = adapter->max_mtu - ETH_HLEN; | |
032c5e82 | 5137 | |
40c9db8a | 5138 | rc = device_create_file(&dev->dev, &dev_attr_failover); |
7c1885ae | 5139 | if (rc) |
07184213 | 5140 | goto ibmvnic_dev_file_err; |
40c9db8a | 5141 | |
e876a8a7 | 5142 | netif_carrier_off(netdev); |
032c5e82 TF |
5143 | rc = register_netdev(netdev); |
5144 | if (rc) { | |
5145 | dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); | |
7c1885ae | 5146 | goto ibmvnic_register_fail; |
032c5e82 TF |
5147 | } |
5148 | dev_info(&dev->dev, "ibmvnic registered\n"); | |
5149 | ||
90c8014c | 5150 | adapter->state = VNIC_PROBED; |
c26eba03 JA |
5151 | |
5152 | adapter->wait_for_reset = false; | |
5153 | ||
032c5e82 | 5154 | return 0; |
7c1885ae NF |
5155 | |
5156 | ibmvnic_register_fail: | |
5157 | device_remove_file(&dev->dev, &dev_attr_failover); | |
5158 | ||
07184213 TF |
5159 | ibmvnic_dev_file_err: |
5160 | release_stats_token(adapter); | |
5161 | ||
5162 | ibmvnic_stats_fail: | |
5163 | release_stats_buffers(adapter); | |
5164 | ||
7c1885ae | 5165 | ibmvnic_init_fail: |
d7c0ef36 | 5166 | release_sub_crqs(adapter, 1); |
7c1885ae | 5167 | release_crq_queue(adapter); |
ff25dcb9 | 5168 | mutex_destroy(&adapter->fw_lock); |
7c1885ae NF |
5169 | free_netdev(netdev); |
5170 | ||
5171 | return rc; | |
032c5e82 TF |
5172 | } |
5173 | ||
5174 | static int ibmvnic_remove(struct vio_dev *dev) | |
5175 | { | |
5176 | struct net_device *netdev = dev_get_drvdata(&dev->dev); | |
37489055 | 5177 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); |
7d7195a0 JK |
5178 | unsigned long flags; |
5179 | ||
5180 | spin_lock_irqsave(&adapter->state_lock, flags); | |
5181 | if (adapter->state == VNIC_RESETTING) { | |
5182 | spin_unlock_irqrestore(&adapter->state_lock, flags); | |
5183 | return -EBUSY; | |
5184 | } | |
032c5e82 | 5185 | |
90c8014c | 5186 | adapter->state = VNIC_REMOVING; |
7d7195a0 JK |
5187 | spin_unlock_irqrestore(&adapter->state_lock, flags); |
5188 | ||
a5681e20 JK |
5189 | rtnl_lock(); |
5190 | unregister_netdevice(netdev); | |
37489055 NF |
5191 | |
5192 | release_resources(adapter); | |
d7c0ef36 | 5193 | release_sub_crqs(adapter, 1); |
37489055 NF |
5194 | release_crq_queue(adapter); |
5195 | ||
53cc7721 TF |
5196 | release_stats_token(adapter); |
5197 | release_stats_buffers(adapter); | |
5198 | ||
90c8014c NF |
5199 | adapter->state = VNIC_REMOVED; |
5200 | ||
a5681e20 | 5201 | rtnl_unlock(); |
ff25dcb9 | 5202 | mutex_destroy(&adapter->fw_lock); |
40c9db8a | 5203 | device_remove_file(&dev->dev, &dev_attr_failover); |
032c5e82 TF |
5204 | free_netdev(netdev); |
5205 | dev_set_drvdata(&dev->dev, NULL); | |
5206 | ||
5207 | return 0; | |
5208 | } | |
5209 | ||
40c9db8a TF |
5210 | static ssize_t failover_store(struct device *dev, struct device_attribute *attr, |
5211 | const char *buf, size_t count) | |
5212 | { | |
5213 | struct net_device *netdev = dev_get_drvdata(dev); | |
5214 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
5215 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
5216 | __be64 session_token; | |
5217 | long rc; | |
5218 | ||
5219 | if (!sysfs_streq(buf, "1")) | |
5220 | return -EINVAL; | |
5221 | ||
5222 | rc = plpar_hcall(H_VIOCTL, retbuf, adapter->vdev->unit_address, | |
5223 | H_GET_SESSION_TOKEN, 0, 0, 0); | |
5224 | if (rc) { | |
5225 | netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n", | |
5226 | rc); | |
5227 | return -EINVAL; | |
5228 | } | |
5229 | ||
5230 | session_token = (__be64)retbuf[0]; | |
5231 | netdev_dbg(netdev, "Initiating client failover, session id %llx\n", | |
5232 | be64_to_cpu(session_token)); | |
5233 | rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, | |
5234 | H_SESSION_ERR_DETECTED, session_token, 0, 0); | |
5235 | if (rc) { | |
5236 | netdev_err(netdev, "Client initiated failover failed, rc %ld\n", | |
5237 | rc); | |
5238 | return -EINVAL; | |
5239 | } | |
5240 | ||
5241 | return count; | |
5242 | } | |
5243 | ||
6cbaefb4 | 5244 | static DEVICE_ATTR_WO(failover); |
40c9db8a | 5245 | |
032c5e82 TF |
5246 | static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) |
5247 | { | |
5248 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
5249 | struct ibmvnic_adapter *adapter; | |
5250 | struct iommu_table *tbl; | |
5251 | unsigned long ret = 0; | |
5252 | int i; | |
5253 | ||
5254 | tbl = get_iommu_table_base(&vdev->dev); | |
5255 | ||
5256 | /* netdev inits at probe time along with the structures we need below*/ | |
5257 | if (!netdev) | |
5258 | return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); | |
5259 | ||
5260 | adapter = netdev_priv(netdev); | |
5261 | ||
5262 | ret += PAGE_SIZE; /* the crq message queue */ | |
032c5e82 TF |
5263 | ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); |
5264 | ||
5265 | for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) | |
5266 | ret += 4 * PAGE_SIZE; /* the scrq message queue */ | |
5267 | ||
5268 | for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); | |
5269 | i++) | |
5270 | ret += adapter->rx_pool[i].size * | |
5271 | IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); | |
5272 | ||
5273 | return ret; | |
5274 | } | |
5275 | ||
5276 | static int ibmvnic_resume(struct device *dev) | |
5277 | { | |
5278 | struct net_device *netdev = dev_get_drvdata(dev); | |
5279 | struct ibmvnic_adapter *adapter = netdev_priv(netdev); | |
032c5e82 | 5280 | |
cb89ba24 JA |
5281 | if (adapter->state != VNIC_OPEN) |
5282 | return 0; | |
5283 | ||
a248878d | 5284 | tasklet_schedule(&adapter->tasklet); |
032c5e82 TF |
5285 | |
5286 | return 0; | |
5287 | } | |
5288 | ||
8c37bc67 | 5289 | static const struct vio_device_id ibmvnic_device_table[] = { |
032c5e82 TF |
5290 | {"network", "IBM,vnic"}, |
5291 | {"", "" } | |
5292 | }; | |
5293 | MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); | |
5294 | ||
5295 | static const struct dev_pm_ops ibmvnic_pm_ops = { | |
5296 | .resume = ibmvnic_resume | |
5297 | }; | |
5298 | ||
5299 | static struct vio_driver ibmvnic_driver = { | |
5300 | .id_table = ibmvnic_device_table, | |
5301 | .probe = ibmvnic_probe, | |
5302 | .remove = ibmvnic_remove, | |
5303 | .get_desired_dma = ibmvnic_get_desired_dma, | |
5304 | .name = ibmvnic_driver_name, | |
5305 | .pm = &ibmvnic_pm_ops, | |
5306 | }; | |
5307 | ||
5308 | /* module functions */ | |
5309 | static int __init ibmvnic_module_init(void) | |
5310 | { | |
5311 | pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, | |
5312 | IBMVNIC_DRIVER_VERSION); | |
5313 | ||
5314 | return vio_register_driver(&ibmvnic_driver); | |
5315 | } | |
5316 | ||
5317 | static void __exit ibmvnic_module_exit(void) | |
5318 | { | |
5319 | vio_unregister_driver(&ibmvnic_driver); | |
5320 | } | |
5321 | ||
5322 | module_init(ibmvnic_module_init); | |
5323 | module_exit(ibmvnic_module_exit); |