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[linux.git] / drivers / net / ethernet / ibm / ibmvnic.c
CommitLineData
032c5e82
TF		 1/**************************************************************************/
2/* */
3/* IBM System i and System p Virtual NIC Device Driver */
4/* Copyright (C) 2014 IBM Corp. */
5/* Santiago Leon ([email protected]) */
6/* Thomas Falcon ([email protected]) */
7/* John Allen ([email protected]) */
8/* */
9/* This program is free software; you can redistribute it and/or modify */
10/* it under the terms of the GNU General Public License as published by */
11/* the Free Software Foundation; either version 2 of the License, or */
12/* (at your option) any later version. */
13/* */
14/* This program is distributed in the hope that it will be useful, */
15/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
16/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
17/* GNU General Public License for more details. */
18/* */
19/* You should have received a copy of the GNU General Public License */
20/* along with this program. */
21/* */
22/* This module contains the implementation of a virtual ethernet device */
23/* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */
24/* option of the RS/6000 Platform Architecture to interface with virtual */
25/* ethernet NICs that are presented to the partition by the hypervisor. */
26/* */
27/* Messages are passed between the VNIC driver and the VNIC server using */
28/* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */
29/* issue and receive commands that initiate communication with the server */
30/* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */
31/* are used by the driver to notify the server that a packet is */
32/* ready for transmission or that a buffer has been added to receive a */
33/* packet. Subsequently, sCRQs are used by the server to notify the */
34/* driver that a packet transmission has been completed or that a packet */
35/* has been received and placed in a waiting buffer. */
36/* */
37/* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */
38/* which skbs are DMA mapped and immediately unmapped when the transmit */
39/* or receive has been completed, the VNIC driver is required to use */
40/* "long term mapping". This entails that large, continuous DMA mapped */
41/* buffers are allocated on driver initialization and these buffers are */
42/* then continuously reused to pass skbs to and from the VNIC server. */
43/* */
44/**************************************************************************/
45
46#include <linux/module.h>
47#include <linux/moduleparam.h>
48#include <linux/types.h>
49#include <linux/errno.h>
50#include <linux/completion.h>
51#include <linux/ioport.h>
52#include <linux/dma-mapping.h>
53#include <linux/kernel.h>
54#include <linux/netdevice.h>
55#include <linux/etherdevice.h>
56#include <linux/skbuff.h>
57#include <linux/init.h>
58#include <linux/delay.h>
59#include <linux/mm.h>
60#include <linux/ethtool.h>
61#include <linux/proc_fs.h>
4eb50ceb 62#include <linux/if_arp.h>
032c5e82
TF		 63#include <linux/in.h>
64#include <linux/ip.h>
ad7775dc 65#include <linux/ipv6.h>
032c5e82
TF		 66#include <linux/irq.h>
67#include <linux/kthread.h>
68#include <linux/seq_file.h>
032c5e82
TF		 69#include <linux/interrupt.h>
70#include <net/net_namespace.h>
71#include <asm/hvcall.h>
72#include <linux/atomic.h>
73#include <asm/vio.h>
74#include <asm/iommu.h>
75#include <linux/uaccess.h>
76#include <asm/firmware.h>
65dc6891 77#include <linux/workqueue.h>
6052d5e2 78#include <linux/if_vlan.h>
37798d02 79#include <linux/utsname.h>
032c5e82
TF		 80
81#include "ibmvnic.h"
82
83static const char ibmvnic_driver_name[] = "ibmvnic";
84static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
85
78b07ac1 86MODULE_AUTHOR("Santiago Leon");
032c5e82
TF		 87MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
88MODULE_LICENSE("GPL");
89MODULE_VERSION(IBMVNIC_DRIVER_VERSION);
90
91static int ibmvnic_version = IBMVNIC_INITIAL_VERSION;
92static int ibmvnic_remove(struct vio_dev *);
d7c0ef36 93static void release_sub_crqs(struct ibmvnic_adapter *, bool);
032c5e82
TF		 94static int ibmvnic_reset_crq(struct ibmvnic_adapter *);
95static int ibmvnic_send_crq_init(struct ibmvnic_adapter *);
96static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *);
97static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *);
98static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
99 union sub_crq *sub_crq);
ad7775dc 100static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64);
032c5e82
TF		 101static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance);
102static int enable_scrq_irq(struct ibmvnic_adapter *,
103 struct ibmvnic_sub_crq_queue *);
104static int disable_scrq_irq(struct ibmvnic_adapter *,
105 struct ibmvnic_sub_crq_queue *);
106static int pending_scrq(struct ibmvnic_adapter *,
107 struct ibmvnic_sub_crq_queue *);
108static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *,
109 struct ibmvnic_sub_crq_queue *);
110static int ibmvnic_poll(struct napi_struct *napi, int data);
111static void send_map_query(struct ibmvnic_adapter *adapter);
9c4eaabd
TF		 112static int send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8);
113static int send_request_unmap(struct ibmvnic_adapter *, u8);
20a8ab74 114static int send_login(struct ibmvnic_adapter *adapter);
bd0b6723 115static void send_cap_queries(struct ibmvnic_adapter *adapter);
4d96f12a 116static int init_sub_crqs(struct ibmvnic_adapter *);
bd0b6723 117static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter);
ea5509f5 118static int ibmvnic_init(struct ibmvnic_adapter *);
f992887c 119static void release_crq_queue(struct ibmvnic_adapter *);
c26eba03 120static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p);
30f79625 121static int init_crq_queue(struct ibmvnic_adapter *adapter);
032c5e82
TF		 122
123struct ibmvnic_stat {
124 char name[ETH_GSTRING_LEN];
125 int offset;
126};
127
128#define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \
129 offsetof(struct ibmvnic_statistics, stat))
130#define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off)))
131
132static const struct ibmvnic_stat ibmvnic_stats[] = {
133 {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)},
134 {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)},
135 {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)},
136 {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)},
137 {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)},
138 {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)},
139 {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)},
140 {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)},
141 {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)},
142 {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)},
143 {"align_errors", IBMVNIC_STAT_OFF(align_errors)},
144 {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)},
145 {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)},
146 {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)},
147 {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)},
148 {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)},
149 {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)},
150 {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)},
151 {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)},
152 {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)},
153 {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)},
154 {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)},
155};
156
157static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
158 unsigned long length, unsigned long *number,
159 unsigned long *irq)
160{
161 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
162 long rc;
163
164 rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
165 *number = retbuf[0];
166 *irq = retbuf[1];
167
168 return rc;
169}
170
032c5e82
TF		 171static int alloc_long_term_buff(struct ibmvnic_adapter *adapter,
172 struct ibmvnic_long_term_buff *ltb, int size)
173{
174 struct device *dev = &adapter->vdev->dev;
9c4eaabd 175 int rc;
032c5e82
TF		 176
177 ltb->size = size;
178 ltb->buff = dma_alloc_coherent(dev, ltb->size, &ltb->addr,
179 GFP_KERNEL);
180
181 if (!ltb->buff) {
182 dev_err(dev, "Couldn't alloc long term buffer\n");
183 return -ENOMEM;
184 }
185 ltb->map_id = adapter->map_id;
186 adapter->map_id++;
db5d0b59
NF		 187
188 init_completion(&adapter->fw_done);
9c4eaabd
TF		 189 rc = send_request_map(adapter, ltb->addr,
190 ltb->size, ltb->map_id);
191 if (rc) {
192 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
193 return rc;
194 }
032c5e82 195 wait_for_completion(&adapter->fw_done);
f3be0cbc
TF		 196
197 if (adapter->fw_done_rc) {
198 dev_err(dev, "Couldn't map long term buffer,rc = %d\n",
199 adapter->fw_done_rc);
4cf2ddf3 200 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
f3be0cbc
TF		 201 return -1;
202 }
032c5e82
TF		 203 return 0;
204}
205
206static void free_long_term_buff(struct ibmvnic_adapter *adapter,
207 struct ibmvnic_long_term_buff *ltb)
208{
209 struct device *dev = &adapter->vdev->dev;
210
c657e32c
NF		 211 if (!ltb->buff)
212 return;
213
ed651a10
NF		 214 if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
215 adapter->reset_reason != VNIC_RESET_MOBILITY)
dfad09a6 216 send_request_unmap(adapter, ltb->map_id);
59af56c2 217 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
032c5e82
TF		 218}
219
f3be0cbc
TF		 220static int reset_long_term_buff(struct ibmvnic_adapter *adapter,
221 struct ibmvnic_long_term_buff *ltb)
222{
9c4eaabd
TF		 223 int rc;
224
f3be0cbc
TF		 225 memset(ltb->buff, 0, ltb->size);
226
227 init_completion(&adapter->fw_done);
9c4eaabd
TF		 228 rc = send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id);
229 if (rc)
230 return rc;
f3be0cbc
TF		 231 wait_for_completion(&adapter->fw_done);
232
233 if (adapter->fw_done_rc) {
234 dev_info(&adapter->vdev->dev,
235 "Reset failed, attempting to free and reallocate buffer\n");
236 free_long_term_buff(adapter, ltb);
237 return alloc_long_term_buff(adapter, ltb, ltb->size);
238 }
239 return 0;
240}
241
f185a49a
TF		 242static void deactivate_rx_pools(struct ibmvnic_adapter *adapter)
243{
244 int i;
245
246 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
247 i++)
248 adapter->rx_pool[i].active = 0;
249}
250
032c5e82
TF		 251static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
252 struct ibmvnic_rx_pool *pool)
253{
254 int count = pool->size - atomic_read(&pool->available);
255 struct device *dev = &adapter->vdev->dev;
256 int buffers_added = 0;
257 unsigned long lpar_rc;
258 union sub_crq sub_crq;
259 struct sk_buff *skb;
260 unsigned int offset;
261 dma_addr_t dma_addr;
262 unsigned char *dst;
263 u64 *handle_array;
264 int shift = 0;
265 int index;
266 int i;
267
f185a49a
TF		 268 if (!pool->active)
269 return;
270
032c5e82
TF		 271 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
272 be32_to_cpu(adapter->login_rsp_buf->
273 off_rxadd_subcrqs));
274
275 for (i = 0; i < count; ++i) {
276 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
277 if (!skb) {
278 dev_err(dev, "Couldn't replenish rx buff\n");
279 adapter->replenish_no_mem++;
280 break;
281 }
282
283 index = pool->free_map[pool->next_free];
284
285 if (pool->rx_buff[index].skb)
286 dev_err(dev, "Inconsistent free_map!\n");
287
288 /* Copy the skb to the long term mapped DMA buffer */
289 offset = index * pool->buff_size;
290 dst = pool->long_term_buff.buff + offset;
291 memset(dst, 0, pool->buff_size);
292 dma_addr = pool->long_term_buff.addr + offset;
293 pool->rx_buff[index].data = dst;
294
295 pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP;
296 pool->rx_buff[index].dma = dma_addr;
297 pool->rx_buff[index].skb = skb;
298 pool->rx_buff[index].pool_index = pool->index;
299 pool->rx_buff[index].size = pool->buff_size;
300
301 memset(&sub_crq, 0, sizeof(sub_crq));
302 sub_crq.rx_add.first = IBMVNIC_CRQ_CMD;
303 sub_crq.rx_add.correlator =
304 cpu_to_be64((u64)&pool->rx_buff[index]);
305 sub_crq.rx_add.ioba = cpu_to_be32(dma_addr);
306 sub_crq.rx_add.map_id = pool->long_term_buff.map_id;
307
308 /* The length field of the sCRQ is defined to be 24 bits so the
309 * buffer size needs to be left shifted by a byte before it is
310 * converted to big endian to prevent the last byte from being
311 * truncated.
312 */
313#ifdef __LITTLE_ENDIAN__
314 shift = 8;
315#endif
316 sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift);
317
318 lpar_rc = send_subcrq(adapter, handle_array[pool->index],
319 &sub_crq);
320 if (lpar_rc != H_SUCCESS)
321 goto failure;
322
323 buffers_added++;
324 adapter->replenish_add_buff_success++;
325 pool->next_free = (pool->next_free + 1) % pool->size;
326 }
327 atomic_add(buffers_added, &pool->available);
328 return;
329
330failure:
331 dev_info(dev, "replenish pools failure\n");
332 pool->free_map[pool->next_free] = index;
333 pool->rx_buff[index].skb = NULL;
032c5e82
TF		 334
335 dev_kfree_skb_any(skb);
336 adapter->replenish_add_buff_failure++;
337 atomic_add(buffers_added, &pool->available);
f185a49a 338
5a18e1e0 339 if (lpar_rc == H_CLOSED || adapter->failover_pending) {
f185a49a 340 /* Disable buffer pool replenishment and report carrier off if
5a18e1e0
TF		 341 * queue is closed or pending failover.
342 * Firmware guarantees that a signal will be sent to the
343 * driver, triggering a reset.
f185a49a
TF		 344 */
345 deactivate_rx_pools(adapter);
346 netif_carrier_off(adapter->netdev);
347 }
032c5e82
TF		 348}
349
350static void replenish_pools(struct ibmvnic_adapter *adapter)
351{
352 int i;
353
032c5e82
TF		 354 adapter->replenish_task_cycles++;
355 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
356 i++) {
357 if (adapter->rx_pool[i].active)
358 replenish_rx_pool(adapter, &adapter->rx_pool[i]);
359 }
360}
361
3d52b594
JA		 362static void release_stats_buffers(struct ibmvnic_adapter *adapter)
363{
364 kfree(adapter->tx_stats_buffers);
365 kfree(adapter->rx_stats_buffers);
b0992eca
TF		 366 adapter->tx_stats_buffers = NULL;
367 adapter->rx_stats_buffers = NULL;
3d52b594
JA		 368}
369
370static int init_stats_buffers(struct ibmvnic_adapter *adapter)
371{
372 adapter->tx_stats_buffers =
abcae546 373 kcalloc(IBMVNIC_MAX_QUEUES,
3d52b594
JA		 374 sizeof(struct ibmvnic_tx_queue_stats),
375 GFP_KERNEL);
376 if (!adapter->tx_stats_buffers)
377 return -ENOMEM;
378
379 adapter->rx_stats_buffers =
abcae546 380 kcalloc(IBMVNIC_MAX_QUEUES,
3d52b594
JA		 381 sizeof(struct ibmvnic_rx_queue_stats),
382 GFP_KERNEL);
383 if (!adapter->rx_stats_buffers)
384 return -ENOMEM;
385
386 return 0;
387}
388
7bbc27a4
NF		 389static void release_stats_token(struct ibmvnic_adapter *adapter)
390{
391 struct device *dev = &adapter->vdev->dev;
392
393 if (!adapter->stats_token)
394 return;
395
396 dma_unmap_single(dev, adapter->stats_token,
397 sizeof(struct ibmvnic_statistics),
398 DMA_FROM_DEVICE);
399 adapter->stats_token = 0;
400}
401
402static int init_stats_token(struct ibmvnic_adapter *adapter)
403{
404 struct device *dev = &adapter->vdev->dev;
405 dma_addr_t stok;
406
407 stok = dma_map_single(dev, &adapter->stats,
408 sizeof(struct ibmvnic_statistics),
409 DMA_FROM_DEVICE);
410 if (dma_mapping_error(dev, stok)) {
411 dev_err(dev, "Couldn't map stats buffer\n");
412 return -1;
413 }
414
415 adapter->stats_token = stok;
d1cf33d9 416 netdev_dbg(adapter->netdev, "Stats token initialized (%llx)\n", stok);
7bbc27a4
NF		 417 return 0;
418}
419
8c0543ad
NF		 420static int reset_rx_pools(struct ibmvnic_adapter *adapter)
421{
422 struct ibmvnic_rx_pool *rx_pool;
423 int rx_scrqs;
f3be0cbc 424 int i, j, rc;
896d8695
JA		 425 u64 *size_array;
426
427 size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
428 be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size));
8c0543ad
NF		 429
430 rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
431 for (i = 0; i < rx_scrqs; i++) {
432 rx_pool = &adapter->rx_pool[i];
433
d1cf33d9
NF		 434 netdev_dbg(adapter->netdev, "Re-setting rx_pool[%d]\n", i);
435
896d8695
JA		 436 if (rx_pool->buff_size != be64_to_cpu(size_array[i])) {
437 free_long_term_buff(adapter, &rx_pool->long_term_buff);
438 rx_pool->buff_size = be64_to_cpu(size_array[i]);
439 alloc_long_term_buff(adapter, &rx_pool->long_term_buff,
440 rx_pool->size *
441 rx_pool->buff_size);
442 } else {
443 rc = reset_long_term_buff(adapter,
444 &rx_pool->long_term_buff);
445 }
446
f3be0cbc
TF		 447 if (rc)
448 return rc;
8c0543ad
NF		 449
450 for (j = 0; j < rx_pool->size; j++)
451 rx_pool->free_map[j] = j;
452
453 memset(rx_pool->rx_buff, 0,
454 rx_pool->size * sizeof(struct ibmvnic_rx_buff));
455
456 atomic_set(&rx_pool->available, 0);
457 rx_pool->next_alloc = 0;
458 rx_pool->next_free = 0;
c3e53b9a 459 rx_pool->active = 1;
8c0543ad
NF		 460 }
461
462 return 0;
463}
464
0ffe2cb7 465static void release_rx_pools(struct ibmvnic_adapter *adapter)
032c5e82 466{
0ffe2cb7 467 struct ibmvnic_rx_pool *rx_pool;
0ffe2cb7 468 int i, j;
032c5e82 469
0ffe2cb7 470 if (!adapter->rx_pool)
032c5e82
TF		 471 return;
472
82e3be32 473 for (i = 0; i < adapter->num_active_rx_pools; i++) {
0ffe2cb7
NF		 474 rx_pool = &adapter->rx_pool[i];
475
d1cf33d9
NF		 476 netdev_dbg(adapter->netdev, "Releasing rx_pool[%d]\n", i);
477
0ffe2cb7
NF		 478 kfree(rx_pool->free_map);
479 free_long_term_buff(adapter, &rx_pool->long_term_buff);
480
481 if (!rx_pool->rx_buff)
e0ebe942 482 continue;
0ffe2cb7
NF		 483
484 for (j = 0; j < rx_pool->size; j++) {
485 if (rx_pool->rx_buff[j].skb) {
486 dev_kfree_skb_any(rx_pool->rx_buff[i].skb);
487 rx_pool->rx_buff[i].skb = NULL;
488 }
489 }
490
491 kfree(rx_pool->rx_buff);
492 }
493
494 kfree(adapter->rx_pool);
495 adapter->rx_pool = NULL;
82e3be32 496 adapter->num_active_rx_pools = 0;
0ffe2cb7
NF		 497}
498
499static int init_rx_pools(struct net_device *netdev)
500{
501 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
502 struct device *dev = &adapter->vdev->dev;
503 struct ibmvnic_rx_pool *rx_pool;
504 int rxadd_subcrqs;
505 u64 *size_array;
506 int i, j;
507
508 rxadd_subcrqs =
509 be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
510 size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
511 be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size));
512
513 adapter->rx_pool = kcalloc(rxadd_subcrqs,
514 sizeof(struct ibmvnic_rx_pool),
515 GFP_KERNEL);
516 if (!adapter->rx_pool) {
517 dev_err(dev, "Failed to allocate rx pools\n");
518 return -1;
519 }
520
82e3be32
NF		 521 adapter->num_active_rx_pools = rxadd_subcrqs;
522
0ffe2cb7
NF		 523 for (i = 0; i < rxadd_subcrqs; i++) {
524 rx_pool = &adapter->rx_pool[i];
525
526 netdev_dbg(adapter->netdev,
d1cf33d9 527 "Initializing rx_pool[%d], %lld buffs, %lld bytes each\n",
0ffe2cb7
NF		 528 i, adapter->req_rx_add_entries_per_subcrq,
529 be64_to_cpu(size_array[i]));
530
531 rx_pool->size = adapter->req_rx_add_entries_per_subcrq;
532 rx_pool->index = i;
533 rx_pool->buff_size = be64_to_cpu(size_array[i]);
534 rx_pool->active = 1;
535
536 rx_pool->free_map = kcalloc(rx_pool->size, sizeof(int),
537 GFP_KERNEL);
538 if (!rx_pool->free_map) {
539 release_rx_pools(adapter);
540 return -1;
032c5e82 541 }
0ffe2cb7
NF		 542
543 rx_pool->rx_buff = kcalloc(rx_pool->size,
544 sizeof(struct ibmvnic_rx_buff),
545 GFP_KERNEL);
546 if (!rx_pool->rx_buff) {
547 dev_err(dev, "Couldn't alloc rx buffers\n");
548 release_rx_pools(adapter);
549 return -1;
550 }
551
552 if (alloc_long_term_buff(adapter, &rx_pool->long_term_buff,
553 rx_pool->size * rx_pool->buff_size)) {
554 release_rx_pools(adapter);
555 return -1;
556 }
557
558 for (j = 0; j < rx_pool->size; ++j)
559 rx_pool->free_map[j] = j;
560
561 atomic_set(&rx_pool->available, 0);
562 rx_pool->next_alloc = 0;
563 rx_pool->next_free = 0;
032c5e82 564 }
0ffe2cb7
NF		 565
566 return 0;
032c5e82
TF		 567}
568
e26dc25b
TF		 569static int reset_one_tx_pool(struct ibmvnic_adapter *adapter,
570 struct ibmvnic_tx_pool *tx_pool)
571{
572 int rc, i;
573
574 rc = reset_long_term_buff(adapter, &tx_pool->long_term_buff);
575 if (rc)
576 return rc;
577
578 memset(tx_pool->tx_buff, 0,
579 tx_pool->num_buffers *
580 sizeof(struct ibmvnic_tx_buff));
581
582 for (i = 0; i < tx_pool->num_buffers; i++)
583 tx_pool->free_map[i] = i;
584
585 tx_pool->consumer_index = 0;
586 tx_pool->producer_index = 0;
587
588 return 0;
589}
590
8c0543ad
NF		 591static int reset_tx_pools(struct ibmvnic_adapter *adapter)
592{
8c0543ad 593 int tx_scrqs;
e26dc25b 594 int i, rc;
8c0543ad
NF		 595
596 tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
597 for (i = 0; i < tx_scrqs; i++) {
e26dc25b 598 rc = reset_one_tx_pool(adapter, &adapter->tso_pool[i]);
f3be0cbc
TF		 599 if (rc)
600 return rc;
e26dc25b 601 rc = reset_one_tx_pool(adapter, &adapter->tx_pool[i]);
fdb06105
TF		 602 if (rc)
603 return rc;
8c0543ad
NF		 604 }
605
606 return 0;
607}
608
4e6759be
DANR		 609static void release_vpd_data(struct ibmvnic_adapter *adapter)
610{
611 if (!adapter->vpd)
612 return;
613
614 kfree(adapter->vpd->buff);
615 kfree(adapter->vpd);
b0992eca
TF		 616
617 adapter->vpd = NULL;
4e6759be
DANR		 618}
619
fb79421c
TF		 620static void release_one_tx_pool(struct ibmvnic_adapter *adapter,
621 struct ibmvnic_tx_pool *tx_pool)
622{
623 kfree(tx_pool->tx_buff);
624 kfree(tx_pool->free_map);
625 free_long_term_buff(adapter, &tx_pool->long_term_buff);
626}
627
c657e32c
NF		 628static void release_tx_pools(struct ibmvnic_adapter *adapter)
629{
896d8695 630 int i;
c657e32c
NF		 631
632 if (!adapter->tx_pool)
633 return;
634
82e3be32 635 for (i = 0; i < adapter->num_active_tx_pools; i++) {
fb79421c
TF		 636 release_one_tx_pool(adapter, &adapter->tx_pool[i]);
637 release_one_tx_pool(adapter, &adapter->tso_pool[i]);
c657e32c
NF		 638 }
639
640 kfree(adapter->tx_pool);
641 adapter->tx_pool = NULL;
fb79421c
TF		 642 kfree(adapter->tso_pool);
643 adapter->tso_pool = NULL;
82e3be32 644 adapter->num_active_tx_pools = 0;
c657e32c
NF		 645}
646
3205306c
TF		 647static int init_one_tx_pool(struct net_device *netdev,
648 struct ibmvnic_tx_pool *tx_pool,
649 int num_entries, int buf_size)
650{
651 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
652 int i;
653
654 tx_pool->tx_buff = kcalloc(num_entries,
655 sizeof(struct ibmvnic_tx_buff),
656 GFP_KERNEL);
657 if (!tx_pool->tx_buff)
658 return -1;
659
660 if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
661 num_entries * buf_size))
662 return -1;
663
664 tx_pool->free_map = kcalloc(num_entries, sizeof(int), GFP_KERNEL);
665 if (!tx_pool->free_map)
666 return -1;
667
668 for (i = 0; i < num_entries; i++)
669 tx_pool->free_map[i] = i;
670
671 tx_pool->consumer_index = 0;
672 tx_pool->producer_index = 0;
673 tx_pool->num_buffers = num_entries;
674 tx_pool->buf_size = buf_size;
675
676 return 0;
677}
678
c657e32c
NF		 679static int init_tx_pools(struct net_device *netdev)
680{
681 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
c657e32c 682 int tx_subcrqs;
3205306c 683 int i, rc;
c657e32c
NF		 684
685 tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
686 adapter->tx_pool = kcalloc(tx_subcrqs,
687 sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
688 if (!adapter->tx_pool)
689 return -1;
690
3205306c
TF		 691 adapter->tso_pool = kcalloc(tx_subcrqs,
692 sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
693 if (!adapter->tso_pool)
694 return -1;
695
82e3be32
NF		 696 adapter->num_active_tx_pools = tx_subcrqs;
697
c657e32c 698 for (i = 0; i < tx_subcrqs; i++) {
3205306c
TF		 699 rc = init_one_tx_pool(netdev, &adapter->tx_pool[i],
700 adapter->req_tx_entries_per_subcrq,
701 adapter->req_mtu + VLAN_HLEN);
702 if (rc) {
c657e32c 703 release_tx_pools(adapter);
3205306c 704 return rc;
fdb06105
TF		 705 }
706
3205306c
TF		 707 init_one_tx_pool(netdev, &adapter->tso_pool[i],
708 IBMVNIC_TSO_BUFS,
709 IBMVNIC_TSO_BUF_SZ);
710 if (rc) {
c657e32c 711 release_tx_pools(adapter);
3205306c 712 return rc;
c657e32c 713 }
c657e32c
NF		 714 }
715
716 return 0;
717}
718
661a2622
NF		 719static void release_error_buffers(struct ibmvnic_adapter *adapter)
720{
721 struct device *dev = &adapter->vdev->dev;
722 struct ibmvnic_error_buff *error_buff, *tmp;
723 unsigned long flags;
724
725 spin_lock_irqsave(&adapter->error_list_lock, flags);
726 list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) {
727 list_del(&error_buff->list);
728 dma_unmap_single(dev, error_buff->dma, error_buff->len,
729 DMA_FROM_DEVICE);
730 kfree(error_buff->buff);
731 kfree(error_buff);
732 }
733 spin_unlock_irqrestore(&adapter->error_list_lock, flags);
734}
735
d944c3d6
JA		 736static void ibmvnic_napi_enable(struct ibmvnic_adapter *adapter)
737{
738 int i;
739
740 if (adapter->napi_enabled)
741 return;
742
743 for (i = 0; i < adapter->req_rx_queues; i++)
744 napi_enable(&adapter->napi[i]);
745
746 adapter->napi_enabled = true;
747}
748
749static void ibmvnic_napi_disable(struct ibmvnic_adapter *adapter)
750{
751 int i;
752
753 if (!adapter->napi_enabled)
754 return;
755
d1cf33d9
NF		 756 for (i = 0; i < adapter->req_rx_queues; i++) {
757 netdev_dbg(adapter->netdev, "Disabling napi[%d]\n", i);
d944c3d6 758 napi_disable(&adapter->napi[i]);
d1cf33d9 759 }
d944c3d6
JA		 760
761 adapter->napi_enabled = false;
762}
763
86f669b2
NF		 764static int init_napi(struct ibmvnic_adapter *adapter)
765{
766 int i;
767
768 adapter->napi = kcalloc(adapter->req_rx_queues,
769 sizeof(struct napi_struct), GFP_KERNEL);
770 if (!adapter->napi)
771 return -ENOMEM;
772
773 for (i = 0; i < adapter->req_rx_queues; i++) {
774 netdev_dbg(adapter->netdev, "Adding napi[%d]\n", i);
775 netif_napi_add(adapter->netdev, &adapter->napi[i],
776 ibmvnic_poll, NAPI_POLL_WEIGHT);
777 }
778
82e3be32 779 adapter->num_active_rx_napi = adapter->req_rx_queues;
86f669b2
NF		 780 return 0;
781}
782
783static void release_napi(struct ibmvnic_adapter *adapter)
784{
785 int i;
786
787 if (!adapter->napi)
788 return;
789
82e3be32 790 for (i = 0; i < adapter->num_active_rx_napi; i++) {
86f669b2
NF		 791 if (&adapter->napi[i]) {
792 netdev_dbg(adapter->netdev,
793 "Releasing napi[%d]\n", i);
794 netif_napi_del(&adapter->napi[i]);
795 }
796 }
797
798 kfree(adapter->napi);
799 adapter->napi = NULL;
82e3be32 800 adapter->num_active_rx_napi = 0;
c3f22415 801 adapter->napi_enabled = false;
86f669b2
NF		 802}
803
a57a5d25 804static int ibmvnic_login(struct net_device *netdev)
032c5e82
TF		 805{
806 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
bd0b6723 807 unsigned long timeout = msecs_to_jiffies(30000);
64d92aa2 808 int retry_count = 0;
4d96f12a 809 int rc;
032c5e82 810
bd0b6723 811 do {
64d92aa2
NF		 812 if (retry_count > IBMVNIC_MAX_QUEUES) {
813 netdev_warn(netdev, "Login attempts exceeded\n");
814 return -1;
815 }
816
817 adapter->init_done_rc = 0;
818 reinit_completion(&adapter->init_done);
819 rc = send_login(adapter);
820 if (rc) {
821 netdev_warn(netdev, "Unable to login\n");
822 return rc;
823 }
824
825 if (!wait_for_completion_timeout(&adapter->init_done,
826 timeout)) {
827 netdev_warn(netdev, "Login timed out\n");
828 return -1;
829 }
830
831 if (adapter->init_done_rc == PARTIALSUCCESS) {
832 retry_count++;
d7c0ef36 833 release_sub_crqs(adapter, 1);
bd0b6723 834
64d92aa2 835 adapter->init_done_rc = 0;
bd0b6723
JA		 836 reinit_completion(&adapter->init_done);
837 send_cap_queries(adapter);
838 if (!wait_for_completion_timeout(&adapter->init_done,
839 timeout)) {
64d92aa2
NF		 840 netdev_warn(netdev,
841 "Capabilities query timed out\n");
bd0b6723
JA		 842 return -1;
843 }
64d92aa2 844
4d96f12a
TF		 845 rc = init_sub_crqs(adapter);
846 if (rc) {
64d92aa2
NF		 847 netdev_warn(netdev,
848 "SCRQ initialization failed\n");
4d96f12a
TF		 849 return -1;
850 }
64d92aa2 851
4d96f12a
TF		 852 rc = init_sub_crq_irqs(adapter);
853 if (rc) {
64d92aa2
NF		 854 netdev_warn(netdev,
855 "SCRQ irq initialization failed\n");
4d96f12a
TF		 856 return -1;
857 }
64d92aa2
NF		 858 } else if (adapter->init_done_rc) {
859 netdev_warn(netdev, "Adapter login failed\n");
bd0b6723
JA		 860 return -1;
861 }
64d92aa2 862 } while (adapter->init_done_rc == PARTIALSUCCESS);
bd0b6723 863
3d166130
TF		 864 /* handle pending MAC address changes after successful login */
865 if (adapter->mac_change_pending) {
866 __ibmvnic_set_mac(netdev, &adapter->desired.mac);
867 adapter->mac_change_pending = false;
868 }
869
a57a5d25
JA		 870 return 0;
871}
872
34f0f4e3
TF		 873static void release_login_buffer(struct ibmvnic_adapter *adapter)
874{
875 kfree(adapter->login_buf);
876 adapter->login_buf = NULL;
877}
878
879static void release_login_rsp_buffer(struct ibmvnic_adapter *adapter)
880{
881 kfree(adapter->login_rsp_buf);
882 adapter->login_rsp_buf = NULL;
883}
884
1b8955ee
NF		 885static void release_resources(struct ibmvnic_adapter *adapter)
886{
4e6759be
DANR		 887 release_vpd_data(adapter);
888
1b8955ee
NF		 889 release_tx_pools(adapter);
890 release_rx_pools(adapter);
891
661a2622 892 release_error_buffers(adapter);
86f669b2 893 release_napi(adapter);
34f0f4e3 894 release_login_rsp_buffer(adapter);
1b8955ee
NF		 895}
896
53da09e9
NF		 897static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state)
898{
899 struct net_device *netdev = adapter->netdev;
900 unsigned long timeout = msecs_to_jiffies(30000);
901 union ibmvnic_crq crq;
902 bool resend;
903 int rc;
904
d1cf33d9
NF		 905 netdev_dbg(netdev, "setting link state %d\n", link_state);
906
53da09e9
NF		 907 memset(&crq, 0, sizeof(crq));
908 crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
909 crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
910 crq.logical_link_state.link_state = link_state;
911
912 do {
913 resend = false;
914
915 reinit_completion(&adapter->init_done);
916 rc = ibmvnic_send_crq(adapter, &crq);
917 if (rc) {
918 netdev_err(netdev, "Failed to set link state\n");
919 return rc;
920 }
921
922 if (!wait_for_completion_timeout(&adapter->init_done,
923 timeout)) {
924 netdev_err(netdev, "timeout setting link state\n");
925 return -1;
926 }
927
928 if (adapter->init_done_rc == 1) {
929 /* Partuial success, delay and re-send */
930 mdelay(1000);
931 resend = true;
ab5ec33b
TF		 932 } else if (adapter->init_done_rc) {
933 netdev_warn(netdev, "Unable to set link state, rc=%d\n",
934 adapter->init_done_rc);
935 return adapter->init_done_rc;
53da09e9
NF		 936 }
937 } while (resend);
938
939 return 0;
940}
941
7f3c6e6b
TF		 942static int set_real_num_queues(struct net_device *netdev)
943{
944 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
945 int rc;
946
d1cf33d9
NF		 947 netdev_dbg(netdev, "Setting real tx/rx queues (%llx/%llx)\n",
948 adapter->req_tx_queues, adapter->req_rx_queues);
949
7f3c6e6b
TF		 950 rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues);
951 if (rc) {
952 netdev_err(netdev, "failed to set the number of tx queues\n");
953 return rc;
954 }
955
956 rc = netif_set_real_num_rx_queues(netdev, adapter->req_rx_queues);
957 if (rc)
958 netdev_err(netdev, "failed to set the number of rx queues\n");
959
960 return rc;
961}
962
4e6759be
DANR		 963static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter)
964{
965 struct device *dev = &adapter->vdev->dev;
966 union ibmvnic_crq crq;
4e6759be 967 int len = 0;
9c4eaabd 968 int rc;
4e6759be
DANR		 969
970 if (adapter->vpd->buff)
971 len = adapter->vpd->len;
972
69d08dcb 973 init_completion(&adapter->fw_done);
4e6759be
DANR		 974 crq.get_vpd_size.first = IBMVNIC_CRQ_CMD;
975 crq.get_vpd_size.cmd = GET_VPD_SIZE;
9c4eaabd
TF		 976 rc = ibmvnic_send_crq(adapter, &crq);
977 if (rc)
978 return rc;
4e6759be
DANR		 979 wait_for_completion(&adapter->fw_done);
980
981 if (!adapter->vpd->len)
982 return -ENODATA;
983
984 if (!adapter->vpd->buff)
985 adapter->vpd->buff = kzalloc(adapter->vpd->len, GFP_KERNEL);
986 else if (adapter->vpd->len != len)
987 adapter->vpd->buff =
988 krealloc(adapter->vpd->buff,
989 adapter->vpd->len, GFP_KERNEL);
990
991 if (!adapter->vpd->buff) {
992 dev_err(dev, "Could allocate VPD buffer\n");
993 return -ENOMEM;
994 }
995
996 adapter->vpd->dma_addr =
997 dma_map_single(dev, adapter->vpd->buff, adapter->vpd->len,
998 DMA_FROM_DEVICE);
f743106e 999 if (dma_mapping_error(dev, adapter->vpd->dma_addr)) {
4e6759be
DANR		 1000 dev_err(dev, "Could not map VPD buffer\n");
1001 kfree(adapter->vpd->buff);
b0992eca 1002 adapter->vpd->buff = NULL;
4e6759be
DANR		 1003 return -ENOMEM;
1004 }
1005
1006 reinit_completion(&adapter->fw_done);
1007 crq.get_vpd.first = IBMVNIC_CRQ_CMD;
1008 crq.get_vpd.cmd = GET_VPD;
1009 crq.get_vpd.ioba = cpu_to_be32(adapter->vpd->dma_addr);
1010 crq.get_vpd.len = cpu_to_be32((u32)adapter->vpd->len);
9c4eaabd
TF		 1011 rc = ibmvnic_send_crq(adapter, &crq);
1012 if (rc) {
1013 kfree(adapter->vpd->buff);
1014 adapter->vpd->buff = NULL;
1015 return rc;
1016 }
4e6759be
DANR		 1017 wait_for_completion(&adapter->fw_done);
1018
1019 return 0;
1020}
1021
bfc32f29 1022static int init_resources(struct ibmvnic_adapter *adapter)
a57a5d25 1023{
bfc32f29 1024 struct net_device *netdev = adapter->netdev;
86f669b2 1025 int rc;
a57a5d25 1026
7f3c6e6b
TF		 1027 rc = set_real_num_queues(netdev);
1028 if (rc)
1029 return rc;
bd0b6723 1030
4e6759be
DANR		 1031 adapter->vpd = kzalloc(sizeof(*adapter->vpd), GFP_KERNEL);
1032 if (!adapter->vpd)
1033 return -ENOMEM;
1034
69d08dcb
JA		 1035 /* Vital Product Data (VPD) */
1036 rc = ibmvnic_get_vpd(adapter);
1037 if (rc) {
1038 netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
1039 return rc;
1040 }
1041
032c5e82 1042 adapter->map_id = 1;
bfc32f29 1043
86f669b2
NF		 1044 rc = init_napi(adapter);
1045 if (rc)
1046 return rc;
032c5e82 1047
032c5e82 1048 send_map_query(adapter);
0ffe2cb7
NF		 1049
1050 rc = init_rx_pools(netdev);
1051 if (rc)
bfc32f29 1052 return rc;
032c5e82 1053
c657e32c 1054 rc = init_tx_pools(netdev);
bfc32f29
NF		 1055 return rc;
1056}
1057
ed651a10 1058static int __ibmvnic_open(struct net_device *netdev)
bfc32f29
NF		 1059{
1060 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
ed651a10 1061 enum vnic_state prev_state = adapter->state;
bfc32f29
NF		 1062 int i, rc;
1063
90c8014c 1064 adapter->state = VNIC_OPENING;
032c5e82 1065 replenish_pools(adapter);
d944c3d6 1066 ibmvnic_napi_enable(adapter);
bfc32f29 1067
032c5e82
TF		 1068 /* We're ready to receive frames, enable the sub-crq interrupts and
1069 * set the logical link state to up
1070 */
ed651a10 1071 for (i = 0; i < adapter->req_rx_queues; i++) {
d1cf33d9 1072 netdev_dbg(netdev, "Enabling rx_scrq[%d] irq\n", i);
ed651a10
NF		 1073 if (prev_state == VNIC_CLOSED)
1074 enable_irq(adapter->rx_scrq[i]->irq);
f23e0643 1075 enable_scrq_irq(adapter, adapter->rx_scrq[i]);
ed651a10 1076 }
032c5e82 1077
ed651a10 1078 for (i = 0; i < adapter->req_tx_queues; i++) {
d1cf33d9 1079 netdev_dbg(netdev, "Enabling tx_scrq[%d] irq\n", i);
ed651a10
NF		 1080 if (prev_state == VNIC_CLOSED)
1081 enable_irq(adapter->tx_scrq[i]->irq);
f23e0643 1082 enable_scrq_irq(adapter, adapter->tx_scrq[i]);
ed651a10 1083 }
032c5e82 1084
53da09e9 1085 rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_UP);
bfc32f29
NF		 1086 if (rc) {
1087 for (i = 0; i < adapter->req_rx_queues; i++)
1088 napi_disable(&adapter->napi[i]);
1089 release_resources(adapter);
ed651a10 1090 return rc;
bfc32f29 1091 }
032c5e82 1092
ed651a10
NF		 1093 netif_tx_start_all_queues(netdev);
1094
1095 if (prev_state == VNIC_CLOSED) {
1096 for (i = 0; i < adapter->req_rx_queues; i++)
1097 napi_schedule(&adapter->napi[i]);
1098 }
1099
1100 adapter->state = VNIC_OPEN;
1101 return rc;
1102}
1103
1104static int ibmvnic_open(struct net_device *netdev)
1105{
1106 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
69d08dcb 1107 int rc;
ed651a10 1108
5a18e1e0
TF		 1109 /* If device failover is pending, just set device state and return.
1110 * Device operation will be handled by reset routine.
1111 */
1112 if (adapter->failover_pending) {
1113 adapter->state = VNIC_OPEN;
1114 return 0;
1115 }
1116
ed651a10
NF		 1117 mutex_lock(&adapter->reset_lock);
1118
1119 if (adapter->state != VNIC_CLOSED) {
1120 rc = ibmvnic_login(netdev);
1121 if (rc) {
1122 mutex_unlock(&adapter->reset_lock);
1123 return rc;
1124 }
1125
1126 rc = init_resources(adapter);
1127 if (rc) {
1128 netdev_err(netdev, "failed to initialize resources\n");
1129 release_resources(adapter);
1130 mutex_unlock(&adapter->reset_lock);
1131 return rc;
1132 }
1133 }
1134
1135 rc = __ibmvnic_open(netdev);
e876a8a7 1136 netif_carrier_on(netdev);
4e6759be 1137
ed651a10
NF		 1138 mutex_unlock(&adapter->reset_lock);
1139
bfc32f29 1140 return rc;
032c5e82
TF		 1141}
1142
d0869c00
TF		 1143static void clean_rx_pools(struct ibmvnic_adapter *adapter)
1144{
1145 struct ibmvnic_rx_pool *rx_pool;
637f81d1 1146 struct ibmvnic_rx_buff *rx_buff;
d0869c00
TF		 1147 u64 rx_entries;
1148 int rx_scrqs;
1149 int i, j;
1150
1151 if (!adapter->rx_pool)
1152 return;
1153
660e309d 1154 rx_scrqs = adapter->num_active_rx_pools;
d0869c00
TF		 1155 rx_entries = adapter->req_rx_add_entries_per_subcrq;
1156
1157 /* Free any remaining skbs in the rx buffer pools */
1158 for (i = 0; i < rx_scrqs; i++) {
1159 rx_pool = &adapter->rx_pool[i];
637f81d1 1160 if (!rx_pool || !rx_pool->rx_buff)
d0869c00
TF		 1161 continue;
1162
1163 netdev_dbg(adapter->netdev, "Cleaning rx_pool[%d]\n", i);
1164 for (j = 0; j < rx_entries; j++) {
637f81d1
TF		 1165 rx_buff = &rx_pool->rx_buff[j];
1166 if (rx_buff && rx_buff->skb) {
1167 dev_kfree_skb_any(rx_buff->skb);
1168 rx_buff->skb = NULL;
d0869c00
TF		 1169 }
1170 }
1171 }
1172}
1173
e9e1e978
TF		 1174static void clean_one_tx_pool(struct ibmvnic_adapter *adapter,
1175 struct ibmvnic_tx_pool *tx_pool)
b41b83e9 1176{
637f81d1 1177 struct ibmvnic_tx_buff *tx_buff;
b41b83e9 1178 u64 tx_entries;
e9e1e978
TF		 1179 int i;
1180
050e85c9 1181 if (!tx_pool || !tx_pool->tx_buff)
e9e1e978
TF		 1182 return;
1183
1184 tx_entries = tx_pool->num_buffers;
1185
1186 for (i = 0; i < tx_entries; i++) {
1187 tx_buff = &tx_pool->tx_buff[i];
1188 if (tx_buff && tx_buff->skb) {
1189 dev_kfree_skb_any(tx_buff->skb);
1190 tx_buff->skb = NULL;
1191 }
1192 }
1193}
1194
1195static void clean_tx_pools(struct ibmvnic_adapter *adapter)
1196{
b41b83e9 1197 int tx_scrqs;
e9e1e978 1198 int i;
b41b83e9 1199
e9e1e978 1200 if (!adapter->tx_pool || !adapter->tso_pool)
b41b83e9
NF		 1201 return;
1202
660e309d 1203 tx_scrqs = adapter->num_active_tx_pools;
b41b83e9
NF		 1204
1205 /* Free any remaining skbs in the tx buffer pools */
1206 for (i = 0; i < tx_scrqs; i++) {
d1cf33d9 1207 netdev_dbg(adapter->netdev, "Cleaning tx_pool[%d]\n", i);
e9e1e978
TF		 1208 clean_one_tx_pool(adapter, &adapter->tx_pool[i]);
1209 clean_one_tx_pool(adapter, &adapter->tso_pool[i]);
b41b83e9
NF		 1210 }
1211}
1212
6095e590 1213static void ibmvnic_disable_irqs(struct ibmvnic_adapter *adapter)
ea5509f5 1214{
6095e590 1215 struct net_device *netdev = adapter->netdev;
ea5509f5
JA		 1216 int i;
1217
46293b94
NF		 1218 if (adapter->tx_scrq) {
1219 for (i = 0; i < adapter->req_tx_queues; i++)
d1cf33d9 1220 if (adapter->tx_scrq[i]->irq) {
f873866a 1221 netdev_dbg(netdev,
d1cf33d9 1222 "Disabling tx_scrq[%d] irq\n", i);
f23e0643 1223 disable_scrq_irq(adapter, adapter->tx_scrq[i]);
46293b94 1224 disable_irq(adapter->tx_scrq[i]->irq);
d1cf33d9 1225 }
46293b94
NF		 1226 }
1227
46293b94
NF		 1228 if (adapter->rx_scrq) {
1229 for (i = 0; i < adapter->req_rx_queues; i++) {
d1cf33d9 1230 if (adapter->rx_scrq[i]->irq) {
f873866a 1231 netdev_dbg(netdev,
d1cf33d9 1232 "Disabling rx_scrq[%d] irq\n", i);
f23e0643 1233 disable_scrq_irq(adapter, adapter->rx_scrq[i]);
46293b94 1234 disable_irq(adapter->rx_scrq[i]->irq);
d1cf33d9 1235 }
46293b94
NF		 1236 }
1237 }
6095e590
JA		 1238}
1239
1240static void ibmvnic_cleanup(struct net_device *netdev)
1241{
1242 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1243
1244 /* ensure that transmissions are stopped if called by do_reset */
1245 if (adapter->resetting)
1246 netif_tx_disable(netdev);
1247 else
1248 netif_tx_stop_all_queues(netdev);
1249
1250 ibmvnic_napi_disable(adapter);
1251 ibmvnic_disable_irqs(adapter);
1252
d0869c00 1253 clean_rx_pools(adapter);
10f76215 1254 clean_tx_pools(adapter);
01d9bd79
TF		 1255}
1256
1257static int __ibmvnic_close(struct net_device *netdev)
1258{
1259 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1260 int rc = 0;
1261
1262 adapter->state = VNIC_CLOSING;
1263 rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
1264 if (rc)
1265 return rc;
90c8014c 1266 adapter->state = VNIC_CLOSED;
01d9bd79 1267 return 0;
032c5e82
TF		 1268}
1269
ed651a10
NF		 1270static int ibmvnic_close(struct net_device *netdev)
1271{
1272 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1273 int rc;
1274
5a18e1e0
TF		 1275 /* If device failover is pending, just set device state and return.
1276 * Device operation will be handled by reset routine.
1277 */
1278 if (adapter->failover_pending) {
1279 adapter->state = VNIC_CLOSED;
1280 return 0;
1281 }
1282
ed651a10
NF		 1283 mutex_lock(&adapter->reset_lock);
1284 rc = __ibmvnic_close(netdev);
30f79625 1285 ibmvnic_cleanup(netdev);
ed651a10
NF		 1286 mutex_unlock(&adapter->reset_lock);
1287
1288 return rc;
1289}
1290
ad7775dc
TF		 1291/**
1292 * build_hdr_data - creates L2/L3/L4 header data buffer
1293 * @hdr_field - bitfield determining needed headers
1294 * @skb - socket buffer
1295 * @hdr_len - array of header lengths
1296 * @tot_len - total length of data
1297 *
1298 * Reads hdr_field to determine which headers are needed by firmware.
1299 * Builds a buffer containing these headers. Saves individual header
1300 * lengths and total buffer length to be used to build descriptors.
1301 */
1302static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
1303 int *hdr_len, u8 *hdr_data)
1304{
1305 int len = 0;
1306 u8 *hdr;
1307
da75e3b6
TF		 1308 if (skb_vlan_tagged(skb) && !skb_vlan_tag_present(skb))
1309 hdr_len[0] = sizeof(struct vlan_ethhdr);
1310 else
1311 hdr_len[0] = sizeof(struct ethhdr);
ad7775dc
TF		 1312
1313 if (skb->protocol == htons(ETH_P_IP)) {
1314 hdr_len[1] = ip_hdr(skb)->ihl * 4;
1315 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
1316 hdr_len[2] = tcp_hdrlen(skb);
1317 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1318 hdr_len[2] = sizeof(struct udphdr);
1319 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1320 hdr_len[1] = sizeof(struct ipv6hdr);
1321 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
1322 hdr_len[2] = tcp_hdrlen(skb);
1323 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
1324 hdr_len[2] = sizeof(struct udphdr);
4eb50ceb
TF		 1325 } else if (skb->protocol == htons(ETH_P_ARP)) {
1326 hdr_len[1] = arp_hdr_len(skb->dev);
1327 hdr_len[2] = 0;
ad7775dc
TF		 1328 }
1329
1330 memset(hdr_data, 0, 120);
1331 if ((hdr_field >> 6) & 1) {
1332 hdr = skb_mac_header(skb);
1333 memcpy(hdr_data, hdr, hdr_len[0]);
1334 len += hdr_len[0];
1335 }
1336
1337 if ((hdr_field >> 5) & 1) {
1338 hdr = skb_network_header(skb);
1339 memcpy(hdr_data + len, hdr, hdr_len[1]);
1340 len += hdr_len[1];
1341 }
1342
1343 if ((hdr_field >> 4) & 1) {
1344 hdr = skb_transport_header(skb);
1345 memcpy(hdr_data + len, hdr, hdr_len[2]);
1346 len += hdr_len[2];
1347 }
1348 return len;
1349}
1350
1351/**
1352 * create_hdr_descs - create header and header extension descriptors
1353 * @hdr_field - bitfield determining needed headers
1354 * @data - buffer containing header data
1355 * @len - length of data buffer
1356 * @hdr_len - array of individual header lengths
1357 * @scrq_arr - descriptor array
1358 *
1359 * Creates header and, if needed, header extension descriptors and
1360 * places them in a descriptor array, scrq_arr
1361 */
1362
2de09681
TF		 1363static int create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len,
1364 union sub_crq *scrq_arr)
ad7775dc
TF		 1365{
1366 union sub_crq hdr_desc;
1367 int tmp_len = len;
2de09681 1368 int num_descs = 0;
ad7775dc
TF		 1369 u8 *data, *cur;
1370 int tmp;
1371
1372 while (tmp_len > 0) {
1373 cur = hdr_data + len - tmp_len;
1374
1375 memset(&hdr_desc, 0, sizeof(hdr_desc));
1376 if (cur != hdr_data) {
1377 data = hdr_desc.hdr_ext.data;
1378 tmp = tmp_len > 29 ? 29 : tmp_len;
1379 hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD;
1380 hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC;
1381 hdr_desc.hdr_ext.len = tmp;
1382 } else {
1383 data = hdr_desc.hdr.data;
1384 tmp = tmp_len > 24 ? 24 : tmp_len;
1385 hdr_desc.hdr.first = IBMVNIC_CRQ_CMD;
1386 hdr_desc.hdr.type = IBMVNIC_HDR_DESC;
1387 hdr_desc.hdr.len = tmp;
1388 hdr_desc.hdr.l2_len = (u8)hdr_len[0];
1389 hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]);
1390 hdr_desc.hdr.l4_len = (u8)hdr_len[2];
1391 hdr_desc.hdr.flag = hdr_field << 1;
1392 }
1393 memcpy(data, cur, tmp);
1394 tmp_len -= tmp;
1395 *scrq_arr = hdr_desc;
1396 scrq_arr++;
2de09681 1397 num_descs++;
ad7775dc 1398 }
2de09681
TF		 1399
1400 return num_descs;
ad7775dc
TF		 1401}
1402
1403/**
1404 * build_hdr_descs_arr - build a header descriptor array
1405 * @skb - socket buffer
1406 * @num_entries - number of descriptors to be sent
1407 * @subcrq - first TX descriptor
1408 * @hdr_field - bit field determining which headers will be sent
1409 *
1410 * This function will build a TX descriptor array with applicable
1411 * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
1412 */
1413
1414static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff,
1415 int *num_entries, u8 hdr_field)
1416{
1417 int hdr_len[3] = {0, 0, 0};
2de09681 1418 int tot_len;
ad7775dc
TF		 1419 u8 *hdr_data = txbuff->hdr_data;
1420
1421 tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len,
1422 txbuff->hdr_data);
2de09681 1423 *num_entries += create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len,
ad7775dc
TF		 1424 txbuff->indir_arr + 1);
1425}
1426
1f247a6f
TF		 1427static int ibmvnic_xmit_workarounds(struct sk_buff *skb,
1428 struct net_device *netdev)
1429{
1430 /* For some backing devices, mishandling of small packets
1431 * can result in a loss of connection or TX stall. Device
1432 * architects recommend that no packet should be smaller
1433 * than the minimum MTU value provided to the driver, so
1434 * pad any packets to that length
1435 */
1436 if (skb->len < netdev->min_mtu)
1437 return skb_put_padto(skb, netdev->min_mtu);
7083a45a
TF		 1438
1439 return 0;
1f247a6f
TF		 1440}
1441
032c5e82
TF		 1442static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
1443{
1444 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1445 int queue_num = skb_get_queue_mapping(skb);
ad7775dc 1446 u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
032c5e82
TF		 1447 struct device *dev = &adapter->vdev->dev;
1448 struct ibmvnic_tx_buff *tx_buff = NULL;
142c0ac4 1449 struct ibmvnic_sub_crq_queue *tx_scrq;
032c5e82
TF		 1450 struct ibmvnic_tx_pool *tx_pool;
1451 unsigned int tx_send_failed = 0;
1452 unsigned int tx_map_failed = 0;
1453 unsigned int tx_dropped = 0;
1454 unsigned int tx_packets = 0;
1455 unsigned int tx_bytes = 0;
1456 dma_addr_t data_dma_addr;
1457 struct netdev_queue *txq;
032c5e82
TF		 1458 unsigned long lpar_rc;
1459 union sub_crq tx_crq;
1460 unsigned int offset;
ad7775dc 1461 int num_entries = 1;
032c5e82
TF		 1462 unsigned char *dst;
1463 u64 *handle_array;
1464 int index = 0;
a0dca10f 1465 u8 proto = 0;
032c5e82
TF		 1466 int ret = 0;
1467
ed651a10 1468 if (adapter->resetting) {
7f5b0308
TF		 1469 if (!netif_subqueue_stopped(netdev, skb))
1470 netif_stop_subqueue(netdev, queue_num);
1471 dev_kfree_skb_any(skb);
1472
032c5e82
TF		 1473 tx_send_failed++;
1474 tx_dropped++;
7f5b0308 1475 ret = NETDEV_TX_OK;
032c5e82
TF		 1476 goto out;
1477 }
1478
7083a45a 1479 if (ibmvnic_xmit_workarounds(skb, netdev)) {
1f247a6f
TF		 1480 tx_dropped++;
1481 tx_send_failed++;
1482 ret = NETDEV_TX_OK;
1483 goto out;
1484 }
06b3e357
TF		 1485 if (skb_is_gso(skb))
1486 tx_pool = &adapter->tso_pool[queue_num];
1487 else
1488 tx_pool = &adapter->tx_pool[queue_num];
1f247a6f 1489
161b8a81
NF		 1490 tx_scrq = adapter->tx_scrq[queue_num];
1491 txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
1492 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
1493 be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs));
1494
032c5e82 1495 index = tx_pool->free_map[tx_pool->consumer_index];
fdb06105 1496
86b61a5f
TF		 1497 if (index == IBMVNIC_INVALID_MAP) {
1498 dev_kfree_skb_any(skb);
1499 tx_send_failed++;
1500 tx_dropped++;
1501 ret = NETDEV_TX_OK;
1502 goto out;
1503 }
1504
1505 tx_pool->free_map[tx_pool->consumer_index] = IBMVNIC_INVALID_MAP;
1506
06b3e357
TF		 1507 offset = index * tx_pool->buf_size;
1508 dst = tx_pool->long_term_buff.buff + offset;
1509 memset(dst, 0, tx_pool->buf_size);
1510 data_dma_addr = tx_pool->long_term_buff.addr + offset;
032c5e82 1511
15482056
TF		 1512 if (skb_shinfo(skb)->nr_frags) {
1513 int cur, i;
1514
1515 /* Copy the head */
1516 skb_copy_from_linear_data(skb, dst, skb_headlen(skb));
1517 cur = skb_headlen(skb);
1518
1519 /* Copy the frags */
1520 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1521 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1522
1523 memcpy(dst + cur,
1524 page_address(skb_frag_page(frag)) +
1525 frag->page_offset, skb_frag_size(frag));
1526 cur += skb_frag_size(frag);
1527 }
1528 } else {
1529 skb_copy_from_linear_data(skb, dst, skb->len);
1530 }
1531
032c5e82 1532 tx_pool->consumer_index =
06b3e357 1533 (tx_pool->consumer_index + 1) % tx_pool->num_buffers;
032c5e82
TF		 1534
1535 tx_buff = &tx_pool->tx_buff[index];
1536 tx_buff->skb = skb;
1537 tx_buff->data_dma[0] = data_dma_addr;
1538 tx_buff->data_len[0] = skb->len;
1539 tx_buff->index = index;
1540 tx_buff->pool_index = queue_num;
1541 tx_buff->last_frag = true;
032c5e82
TF		 1542
1543 memset(&tx_crq, 0, sizeof(tx_crq));
1544 tx_crq.v1.first = IBMVNIC_CRQ_CMD;
1545 tx_crq.v1.type = IBMVNIC_TX_DESC;
1546 tx_crq.v1.n_crq_elem = 1;
1547 tx_crq.v1.n_sge = 1;
1548 tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
06b3e357 1549
fdb06105 1550 if (skb_is_gso(skb))
06b3e357
TF		 1551 tx_crq.v1.correlator =
1552 cpu_to_be32(index | IBMVNIC_TSO_POOL_MASK);
fdb06105 1553 else
06b3e357
TF		 1554 tx_crq.v1.correlator = cpu_to_be32(index);
1555 tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
032c5e82
TF		 1556 tx_crq.v1.sge_len = cpu_to_be32(skb->len);
1557 tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
1558
1559 if (adapter->vlan_header_insertion) {
1560 tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
1561 tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
1562 }
1563
1564 if (skb->protocol == htons(ETH_P_IP)) {
a0dca10f
TF		 1565 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
1566 proto = ip_hdr(skb)->protocol;
1567 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1568 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
1569 proto = ipv6_hdr(skb)->nexthdr;
032c5e82
TF		 1570 }
1571
a0dca10f
TF		 1572 if (proto == IPPROTO_TCP)
1573 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
1574 else if (proto == IPPROTO_UDP)
1575 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
1576
ad7775dc 1577 if (skb->ip_summed == CHECKSUM_PARTIAL) {
032c5e82 1578 tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
ad7775dc
TF		 1579 hdrs += 2;
1580 }
fdb06105
TF		 1581 if (skb_is_gso(skb)) {
1582 tx_crq.v1.flags1 |= IBMVNIC_TX_LSO;
1583 tx_crq.v1.mss = cpu_to_be16(skb_shinfo(skb)->gso_size);
1584 hdrs += 2;
1585 }
ad7775dc 1586 /* determine if l2/3/4 headers are sent to firmware */
2fa56a49 1587 if ((*hdrs >> 7) & 1) {
ad7775dc
TF		 1588 build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
1589 tx_crq.v1.n_crq_elem = num_entries;
ecba616e 1590 tx_buff->num_entries = num_entries;
ad7775dc
TF		 1591 tx_buff->indir_arr[0] = tx_crq;
1592 tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
1593 sizeof(tx_buff->indir_arr),
1594 DMA_TO_DEVICE);
1595 if (dma_mapping_error(dev, tx_buff->indir_dma)) {
7f5b0308
TF		 1596 dev_kfree_skb_any(skb);
1597 tx_buff->skb = NULL;
ad7775dc
TF		 1598 if (!firmware_has_feature(FW_FEATURE_CMO))
1599 dev_err(dev, "tx: unable to map descriptor array\n");
1600 tx_map_failed++;
1601 tx_dropped++;
7f5b0308 1602 ret = NETDEV_TX_OK;
86b61a5f 1603 goto tx_err_out;
ad7775dc 1604 }
498cd8e4 1605 lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num],
ad7775dc
TF		 1606 (u64)tx_buff->indir_dma,
1607 (u64)num_entries);
1608 } else {
ecba616e 1609 tx_buff->num_entries = num_entries;
498cd8e4
JA		 1610 lpar_rc = send_subcrq(adapter, handle_array[queue_num],
1611 &tx_crq);
ad7775dc 1612 }
032c5e82
TF		 1613 if (lpar_rc != H_SUCCESS) {
1614 dev_err(dev, "tx failed with code %ld\n", lpar_rc);
7f5b0308
TF		 1615 dev_kfree_skb_any(skb);
1616 tx_buff->skb = NULL;
1617
5a18e1e0
TF		 1618 if (lpar_rc == H_CLOSED || adapter->failover_pending) {
1619 /* Disable TX and report carrier off if queue is closed
1620 * or pending failover.
b8c80b84
TF		 1621 * Firmware guarantees that a signal will be sent to the
1622 * driver, triggering a reset or some other action.
1623 */
1624 netif_tx_stop_all_queues(netdev);
1625 netif_carrier_off(netdev);
1626 }
7f5b0308 1627
032c5e82
TF		 1628 tx_send_failed++;
1629 tx_dropped++;
7f5b0308 1630 ret = NETDEV_TX_OK;
86b61a5f 1631 goto tx_err_out;
032c5e82 1632 }
142c0ac4 1633
ffc385b9 1634 if (atomic_add_return(num_entries, &tx_scrq->used)
58c8c0c0 1635 >= adapter->req_tx_entries_per_subcrq) {
0aecb13c 1636 netdev_dbg(netdev, "Stopping queue %d\n", queue_num);
142c0ac4
TF		 1637 netif_stop_subqueue(netdev, queue_num);
1638 }
1639
032c5e82
TF		 1640 tx_packets++;
1641 tx_bytes += skb->len;
1642 txq->trans_start = jiffies;
1643 ret = NETDEV_TX_OK;
86b61a5f 1644 goto out;
032c5e82 1645
86b61a5f
TF		 1646tx_err_out:
1647 /* roll back consumer index and map array*/
1648 if (tx_pool->consumer_index == 0)
1649 tx_pool->consumer_index =
1650 tx_pool->num_buffers - 1;
1651 else
1652 tx_pool->consumer_index--;
1653 tx_pool->free_map[tx_pool->consumer_index] = index;
032c5e82
TF		 1654out:
1655 netdev->stats.tx_dropped += tx_dropped;
1656 netdev->stats.tx_bytes += tx_bytes;
1657 netdev->stats.tx_packets += tx_packets;
1658 adapter->tx_send_failed += tx_send_failed;
1659 adapter->tx_map_failed += tx_map_failed;
3d52b594
JA		 1660 adapter->tx_stats_buffers[queue_num].packets += tx_packets;
1661 adapter->tx_stats_buffers[queue_num].bytes += tx_bytes;
1662 adapter->tx_stats_buffers[queue_num].dropped_packets += tx_dropped;
032c5e82
TF		 1663
1664 return ret;
1665}
1666
1667static void ibmvnic_set_multi(struct net_device *netdev)
1668{
1669 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1670 struct netdev_hw_addr *ha;
1671 union ibmvnic_crq crq;
1672
1673 memset(&crq, 0, sizeof(crq));
1674 crq.request_capability.first = IBMVNIC_CRQ_CMD;
1675 crq.request_capability.cmd = REQUEST_CAPABILITY;
1676
1677 if (netdev->flags & IFF_PROMISC) {
1678 if (!adapter->promisc_supported)
1679 return;
1680 } else {
1681 if (netdev->flags & IFF_ALLMULTI) {
1682 /* Accept all multicast */
1683 memset(&crq, 0, sizeof(crq));
1684 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1685 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1686 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
1687 ibmvnic_send_crq(adapter, &crq);
1688 } else if (netdev_mc_empty(netdev)) {
1689 /* Reject all multicast */
1690 memset(&crq, 0, sizeof(crq));
1691 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1692 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1693 crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
1694 ibmvnic_send_crq(adapter, &crq);
1695 } else {
1696 /* Accept one or more multicast(s) */
1697 netdev_for_each_mc_addr(ha, netdev) {
1698 memset(&crq, 0, sizeof(crq));
1699 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1700 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1701 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
1702 ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
1703 ha->addr);
1704 ibmvnic_send_crq(adapter, &crq);
1705 }
1706 }
1707 }
1708}
1709
c26eba03 1710static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p)
032c5e82
TF		 1711{
1712 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1713 struct sockaddr *addr = p;
1714 union ibmvnic_crq crq;
9c4eaabd 1715 int rc;
032c5e82
TF		 1716
1717 if (!is_valid_ether_addr(addr->sa_data))
1718 return -EADDRNOTAVAIL;
1719
1720 memset(&crq, 0, sizeof(crq));
1721 crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
1722 crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
1723 ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data);
f813614f
TF		 1724
1725 init_completion(&adapter->fw_done);
9c4eaabd
TF		 1726 rc = ibmvnic_send_crq(adapter, &crq);
1727 if (rc)
1728 return rc;
f813614f 1729 wait_for_completion(&adapter->fw_done);
032c5e82 1730 /* netdev->dev_addr is changed in handle_change_mac_rsp function */
f813614f 1731 return adapter->fw_done_rc ? -EIO : 0;
032c5e82
TF		 1732}
1733
c26eba03
JA		 1734static int ibmvnic_set_mac(struct net_device *netdev, void *p)
1735{
1736 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1737 struct sockaddr *addr = p;
f813614f 1738 int rc;
c26eba03 1739
3d166130 1740 if (adapter->state == VNIC_PROBED) {
c26eba03
JA		 1741 memcpy(&adapter->desired.mac, addr, sizeof(struct sockaddr));
1742 adapter->mac_change_pending = true;
1743 return 0;
1744 }
1745
f813614f 1746 rc = __ibmvnic_set_mac(netdev, addr);
c26eba03 1747
f813614f 1748 return rc;
c26eba03
JA		 1749}
1750
ed651a10
NF		 1751/**
1752 * do_reset returns zero if we are able to keep processing reset events, or
1753 * non-zero if we hit a fatal error and must halt.
1754 */
1755static int do_reset(struct ibmvnic_adapter *adapter,
1756 struct ibmvnic_rwi *rwi, u32 reset_state)
032c5e82 1757{
896d8695 1758 u64 old_num_rx_queues, old_num_tx_queues;
ed651a10
NF		 1759 struct net_device *netdev = adapter->netdev;
1760 int i, rc;
1761
d1cf33d9
NF		 1762 netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n",
1763 rwi->reset_reason);
1764
ed651a10
NF		 1765 netif_carrier_off(netdev);
1766 adapter->reset_reason = rwi->reset_reason;
1767
896d8695
JA		 1768 old_num_rx_queues = adapter->req_rx_queues;
1769 old_num_tx_queues = adapter->req_tx_queues;
1770
30f79625
NF		 1771 ibmvnic_cleanup(netdev);
1772
1773 if (adapter->reset_reason != VNIC_RESET_MOBILITY &&
1774 adapter->reset_reason != VNIC_RESET_FAILOVER) {
18b8d6bb
TF		 1775 rc = __ibmvnic_close(netdev);
1776 if (rc)
1777 return rc;
ed651a10
NF		 1778 }
1779
c26eba03
JA		 1780 if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM ||
1781 adapter->wait_for_reset) {
1782 release_resources(adapter);
d7c0ef36 1783 release_sub_crqs(adapter, 1);
c26eba03
JA		 1784 release_crq_queue(adapter);
1785 }
1786
8cb31cfc
JA		 1787 if (adapter->reset_reason != VNIC_RESET_NON_FATAL) {
1788 /* remove the closed state so when we call open it appears
1789 * we are coming from the probed state.
1790 */
1791 adapter->state = VNIC_PROBED;
032c5e82 1792
30f79625
NF		 1793 if (adapter->wait_for_reset) {
1794 rc = init_crq_queue(adapter);
1795 } else if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
1796 rc = ibmvnic_reenable_crq_queue(adapter);
1797 release_sub_crqs(adapter, 1);
1798 } else {
1799 rc = ibmvnic_reset_crq(adapter);
1800 if (!rc)
1801 rc = vio_enable_interrupts(adapter->vdev);
1802 }
1803
1804 if (rc) {
1805 netdev_err(adapter->netdev,
1806 "Couldn't initialize crq. rc=%d\n", rc);
1807 return rc;
1808 }
1809
8cb31cfc
JA		 1810 rc = ibmvnic_init(adapter);
1811 if (rc)
2a1bf511 1812 return IBMVNIC_INIT_FAILED;
ed651a10 1813
8cb31cfc
JA		 1814 /* If the adapter was in PROBE state prior to the reset,
1815 * exit here.
1816 */
1817 if (reset_state == VNIC_PROBED)
1818 return 0;
ed651a10 1819
8cb31cfc
JA		 1820 rc = ibmvnic_login(netdev);
1821 if (rc) {
1822 adapter->state = VNIC_PROBED;
1823 return 0;
1824 }
ed651a10 1825
c26eba03
JA		 1826 if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM ||
1827 adapter->wait_for_reset) {
1828 rc = init_resources(adapter);
1829 if (rc)
1830 return rc;
896d8695
JA		 1831 } else if (adapter->req_rx_queues != old_num_rx_queues ||
1832 adapter->req_tx_queues != old_num_tx_queues) {
faefaa97 1833 adapter->map_id = 1;
896d8695
JA		 1834 release_rx_pools(adapter);
1835 release_tx_pools(adapter);
1836 init_rx_pools(netdev);
1837 init_tx_pools(netdev);
d9043c10 1838
86f669b2
NF		 1839 release_napi(adapter);
1840 init_napi(adapter);
c26eba03
JA		 1841 } else {
1842 rc = reset_tx_pools(adapter);
1843 if (rc)
1844 return rc;
8c0543ad 1845
c26eba03
JA		 1846 rc = reset_rx_pools(adapter);
1847 if (rc)
1848 return rc;
c26eba03 1849 }
134bbe7f 1850 ibmvnic_disable_irqs(adapter);
8cb31cfc 1851 }
e676d81c
JA		 1852 adapter->state = VNIC_CLOSED;
1853
1854 if (reset_state == VNIC_CLOSED)
1855 return 0;
1856
ed651a10
NF		 1857 rc = __ibmvnic_open(netdev);
1858 if (rc) {
1859 if (list_empty(&adapter->rwi_list))
1860 adapter->state = VNIC_CLOSED;
1861 else
1862 adapter->state = reset_state;
1863
1864 return 0;
1865 }
1866
ed651a10
NF		 1867 /* kick napi */
1868 for (i = 0; i < adapter->req_rx_queues; i++)
1869 napi_schedule(&adapter->napi[i]);
1870
ebc701b7
NF		 1871 if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
1872 adapter->reset_reason != VNIC_RESET_CHANGE_PARAM)
61d3e1d9
NF		 1873 netdev_notify_peers(netdev);
1874
cc85c02e
TF		 1875 netif_carrier_on(netdev);
1876
ed651a10
NF		 1877 return 0;
1878}
1879
1880static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter)
1881{
1882 struct ibmvnic_rwi *rwi;
1883
1884 mutex_lock(&adapter->rwi_lock);
1885
1886 if (!list_empty(&adapter->rwi_list)) {
1887 rwi = list_first_entry(&adapter->rwi_list, struct ibmvnic_rwi,
1888 list);
1889 list_del(&rwi->list);
1890 } else {
1891 rwi = NULL;
1892 }
1893
1894 mutex_unlock(&adapter->rwi_lock);
1895 return rwi;
1896}
1897
1898static void free_all_rwi(struct ibmvnic_adapter *adapter)
1899{
1900 struct ibmvnic_rwi *rwi;
1901
1902 rwi = get_next_rwi(adapter);
1903 while (rwi) {
1904 kfree(rwi);
1905 rwi = get_next_rwi(adapter);
1906 }
1907}
1908
1909static void __ibmvnic_reset(struct work_struct *work)
1910{
1911 struct ibmvnic_rwi *rwi;
1912 struct ibmvnic_adapter *adapter;
1913 struct net_device *netdev;
1914 u32 reset_state;
c26eba03 1915 int rc = 0;
ed651a10
NF		 1916
1917 adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset);
1918 netdev = adapter->netdev;
1919
1920 mutex_lock(&adapter->reset_lock);
1921 adapter->resetting = true;
1922 reset_state = adapter->state;
1923
1924 rwi = get_next_rwi(adapter);
1925 while (rwi) {
1926 rc = do_reset(adapter, rwi, reset_state);
1927 kfree(rwi);
2a1bf511 1928 if (rc && rc != IBMVNIC_INIT_FAILED)
ed651a10
NF		 1929 break;
1930
1931 rwi = get_next_rwi(adapter);
1932 }
1933
c26eba03
JA		 1934 if (adapter->wait_for_reset) {
1935 adapter->wait_for_reset = false;
1936 adapter->reset_done_rc = rc;
1937 complete(&adapter->reset_done);
1938 }
1939
ed651a10 1940 if (rc) {
d1cf33d9 1941 netdev_dbg(adapter->netdev, "Reset failed\n");
ed651a10 1942 free_all_rwi(adapter);
6d0af07d 1943 mutex_unlock(&adapter->reset_lock);
ed651a10
NF		 1944 return;
1945 }
1946
1947 adapter->resetting = false;
1948 mutex_unlock(&adapter->reset_lock);
1949}
1950
af894d23
TF		 1951static int ibmvnic_reset(struct ibmvnic_adapter *adapter,
1952 enum ibmvnic_reset_reason reason)
ed651a10
NF		 1953{
1954 struct ibmvnic_rwi *rwi, *tmp;
1955 struct net_device *netdev = adapter->netdev;
1956 struct list_head *entry;
af894d23 1957 int ret;
ed651a10
NF		 1958
1959 if (adapter->state == VNIC_REMOVING ||
5a18e1e0
TF		 1960 adapter->state == VNIC_REMOVED ||
1961 adapter->failover_pending) {
af894d23 1962 ret = EBUSY;
5a18e1e0 1963 netdev_dbg(netdev, "Adapter removing or pending failover, skipping reset\n");
af894d23 1964 goto err;
ed651a10
NF		 1965 }
1966
6a2fb0e9
NF		 1967 if (adapter->state == VNIC_PROBING) {
1968 netdev_warn(netdev, "Adapter reset during probe\n");
af894d23
TF		 1969 ret = adapter->init_done_rc = EAGAIN;
1970 goto err;
6a2fb0e9
NF		 1971 }
1972
ed651a10
NF		 1973 mutex_lock(&adapter->rwi_lock);
1974
1975 list_for_each(entry, &adapter->rwi_list) {
1976 tmp = list_entry(entry, struct ibmvnic_rwi, list);
1977 if (tmp->reset_reason == reason) {
d1cf33d9 1978 netdev_dbg(netdev, "Skipping matching reset\n");
ed651a10 1979 mutex_unlock(&adapter->rwi_lock);
af894d23
TF		 1980 ret = EBUSY;
1981 goto err;
ed651a10
NF		 1982 }
1983 }
1984
1985 rwi = kzalloc(sizeof(*rwi), GFP_KERNEL);
1986 if (!rwi) {
1987 mutex_unlock(&adapter->rwi_lock);
1988 ibmvnic_close(netdev);
af894d23
TF		 1989 ret = ENOMEM;
1990 goto err;
ed651a10
NF		 1991 }
1992
1993 rwi->reset_reason = reason;
1994 list_add_tail(&rwi->list, &adapter->rwi_list);
1995 mutex_unlock(&adapter->rwi_lock);
d1cf33d9
NF		 1996
1997 netdev_dbg(adapter->netdev, "Scheduling reset (reason %d)\n", reason);
ed651a10 1998 schedule_work(&adapter->ibmvnic_reset);
af894d23
TF		 1999
2000 return 0;
2001err:
2002 if (adapter->wait_for_reset)
2003 adapter->wait_for_reset = false;
2004 return -ret;
ed651a10
NF		 2005}
2006
2007static void ibmvnic_tx_timeout(struct net_device *dev)
2008{
2009 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2010
2011 ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT);
032c5e82
TF		 2012}
2013
2014static void remove_buff_from_pool(struct ibmvnic_adapter *adapter,
2015 struct ibmvnic_rx_buff *rx_buff)
2016{
2017 struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
2018
2019 rx_buff->skb = NULL;
2020
2021 pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
2022 pool->next_alloc = (pool->next_alloc + 1) % pool->size;
2023
2024 atomic_dec(&pool->available);
2025}
2026
2027static int ibmvnic_poll(struct napi_struct *napi, int budget)
2028{
2029 struct net_device *netdev = napi->dev;
2030 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2031 int scrq_num = (int)(napi - adapter->napi);
2032 int frames_processed = 0;
152ce47d 2033
032c5e82
TF		 2034restart_poll:
2035 while (frames_processed < budget) {
2036 struct sk_buff *skb;
2037 struct ibmvnic_rx_buff *rx_buff;
2038 union sub_crq *next;
2039 u32 length;
2040 u16 offset;
2041 u8 flags = 0;
2042
3468656f
JA		 2043 if (unlikely(adapter->resetting &&
2044 adapter->reset_reason != VNIC_RESET_NON_FATAL)) {
21ecba6c
TF		 2045 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
2046 napi_complete_done(napi, frames_processed);
2047 return frames_processed;
2048 }
2049
032c5e82
TF		 2050 if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
2051 break;
2052 next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
2053 rx_buff =
2054 (struct ibmvnic_rx_buff *)be64_to_cpu(next->
2055 rx_comp.correlator);
2056 /* do error checking */
2057 if (next->rx_comp.rc) {
e1cea2e7
JA		 2058 netdev_dbg(netdev, "rx buffer returned with rc %x\n",
2059 be16_to_cpu(next->rx_comp.rc));
032c5e82
TF		 2060 /* free the entry */
2061 next->rx_comp.first = 0;
4b9b0f01 2062 dev_kfree_skb_any(rx_buff->skb);
032c5e82 2063 remove_buff_from_pool(adapter, rx_buff);
ca05e316 2064 continue;
abe27a88
TF		 2065 } else if (!rx_buff->skb) {
2066 /* free the entry */
2067 next->rx_comp.first = 0;
2068 remove_buff_from_pool(adapter, rx_buff);
2069 continue;
032c5e82
TF		 2070 }
2071
2072 length = be32_to_cpu(next->rx_comp.len);
2073 offset = be16_to_cpu(next->rx_comp.off_frame_data);
2074 flags = next->rx_comp.flags;
2075 skb = rx_buff->skb;
2076 skb_copy_to_linear_data(skb, rx_buff->data + offset,
2077 length);
6052d5e2
MFV		 2078
2079 /* VLAN Header has been stripped by the system firmware and
2080 * needs to be inserted by the driver
2081 */
2082 if (adapter->rx_vlan_header_insertion &&
2083 (flags & IBMVNIC_VLAN_STRIPPED))
2084 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
2085 ntohs(next->rx_comp.vlan_tci));
2086
032c5e82
TF		 2087 /* free the entry */
2088 next->rx_comp.first = 0;
2089 remove_buff_from_pool(adapter, rx_buff);
2090
2091 skb_put(skb, length);
2092 skb->protocol = eth_type_trans(skb, netdev);
94ca305f 2093 skb_record_rx_queue(skb, scrq_num);
032c5e82
TF		 2094
2095 if (flags & IBMVNIC_IP_CHKSUM_GOOD &&
2096 flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) {
2097 skb->ip_summed = CHECKSUM_UNNECESSARY;
2098 }
2099
2100 length = skb->len;
2101 napi_gro_receive(napi, skb); /* send it up */
2102 netdev->stats.rx_packets++;
2103 netdev->stats.rx_bytes += length;
3d52b594
JA		 2104 adapter->rx_stats_buffers[scrq_num].packets++;
2105 adapter->rx_stats_buffers[scrq_num].bytes += length;
032c5e82
TF		 2106 frames_processed++;
2107 }
152ce47d
NF		 2108
2109 if (adapter->state != VNIC_CLOSING)
2110 replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]);
032c5e82
TF		 2111
2112 if (frames_processed < budget) {
2113 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
6ad20165 2114 napi_complete_done(napi, frames_processed);
032c5e82
TF		 2115 if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
2116 napi_reschedule(napi)) {
2117 disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
2118 goto restart_poll;
2119 }
2120 }
2121 return frames_processed;
2122}
2123
2124#ifdef CONFIG_NET_POLL_CONTROLLER
2125static void ibmvnic_netpoll_controller(struct net_device *dev)
2126{
2127 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2128 int i;
2129
2130 replenish_pools(netdev_priv(dev));
2131 for (i = 0; i < adapter->req_rx_queues; i++)
2132 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
2133 adapter->rx_scrq[i]);
2134}
2135#endif
2136
c26eba03
JA		 2137static int wait_for_reset(struct ibmvnic_adapter *adapter)
2138{
af894d23
TF		 2139 int rc, ret;
2140
c26eba03
JA		 2141 adapter->fallback.mtu = adapter->req_mtu;
2142 adapter->fallback.rx_queues = adapter->req_rx_queues;
2143 adapter->fallback.tx_queues = adapter->req_tx_queues;
2144 adapter->fallback.rx_entries = adapter->req_rx_add_entries_per_subcrq;
2145 adapter->fallback.tx_entries = adapter->req_tx_entries_per_subcrq;
2146
2147 init_completion(&adapter->reset_done);
c26eba03 2148 adapter->wait_for_reset = true;
af894d23
TF		 2149 rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM);
2150 if (rc)
2151 return rc;
c26eba03
JA		 2152 wait_for_completion(&adapter->reset_done);
2153
af894d23 2154 ret = 0;
c26eba03 2155 if (adapter->reset_done_rc) {
af894d23 2156 ret = -EIO;
c26eba03
JA		 2157 adapter->desired.mtu = adapter->fallback.mtu;
2158 adapter->desired.rx_queues = adapter->fallback.rx_queues;
2159 adapter->desired.tx_queues = adapter->fallback.tx_queues;
2160 adapter->desired.rx_entries = adapter->fallback.rx_entries;
2161 adapter->desired.tx_entries = adapter->fallback.tx_entries;
2162
2163 init_completion(&adapter->reset_done);
af894d23
TF		 2164 adapter->wait_for_reset = true;
2165 rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM);
2166 if (rc)
2167 return ret;
c26eba03
JA		 2168 wait_for_completion(&adapter->reset_done);
2169 }
2170 adapter->wait_for_reset = false;
2171
af894d23 2172 return ret;
c26eba03
JA		 2173}
2174
3a807b75
JA		 2175static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
2176{
c26eba03
JA		 2177 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2178
2179 adapter->desired.mtu = new_mtu + ETH_HLEN;
2180
2181 return wait_for_reset(adapter);
3a807b75
JA		 2182}
2183
f10b09ef
TF		 2184static netdev_features_t ibmvnic_features_check(struct sk_buff *skb,
2185 struct net_device *dev,
2186 netdev_features_t features)
2187{
2188 /* Some backing hardware adapters can not
2189 * handle packets with a MSS less than 224
2190 * or with only one segment.
2191 */
2192 if (skb_is_gso(skb)) {
2193 if (skb_shinfo(skb)->gso_size < 224 ||
2194 skb_shinfo(skb)->gso_segs == 1)
2195 features &= ~NETIF_F_GSO_MASK;
2196 }
2197
2198 return features;
2199}
2200
032c5e82
TF		 2201static const struct net_device_ops ibmvnic_netdev_ops = {
2202 .ndo_open = ibmvnic_open,
2203 .ndo_stop = ibmvnic_close,
2204 .ndo_start_xmit = ibmvnic_xmit,
2205 .ndo_set_rx_mode = ibmvnic_set_multi,
2206 .ndo_set_mac_address = ibmvnic_set_mac,
2207 .ndo_validate_addr = eth_validate_addr,
032c5e82
TF		 2208 .ndo_tx_timeout = ibmvnic_tx_timeout,
2209#ifdef CONFIG_NET_POLL_CONTROLLER
2210 .ndo_poll_controller = ibmvnic_netpoll_controller,
2211#endif
3a807b75 2212 .ndo_change_mtu = ibmvnic_change_mtu,
f10b09ef 2213 .ndo_features_check = ibmvnic_features_check,
032c5e82
TF		 2214};
2215
2216/* ethtool functions */
2217
8a43379f
PR		 2218static int ibmvnic_get_link_ksettings(struct net_device *netdev,
2219 struct ethtool_link_ksettings *cmd)
032c5e82 2220{
8a43379f
PR		 2221 u32 supported, advertising;
2222
2223 supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
032c5e82 2224 SUPPORTED_FIBRE);
8a43379f 2225 advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg |
032c5e82 2226 ADVERTISED_FIBRE);
8a43379f
PR		 2227 cmd->base.speed = SPEED_1000;
2228 cmd->base.duplex = DUPLEX_FULL;
2229 cmd->base.port = PORT_FIBRE;
2230 cmd->base.phy_address = 0;
2231 cmd->base.autoneg = AUTONEG_ENABLE;
2232
2233 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
2234 supported);
2235 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
2236 advertising);
2237
032c5e82
TF		 2238 return 0;
2239}
2240
4e6759be 2241static void ibmvnic_get_drvinfo(struct net_device *netdev,
032c5e82
TF		 2242 struct ethtool_drvinfo *info)
2243{
4e6759be
DANR		 2244 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2245
032c5e82
TF		 2246 strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver));
2247 strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version));
4e6759be
DANR		 2248 strlcpy(info->fw_version, adapter->fw_version,
2249 sizeof(info->fw_version));
032c5e82
TF		 2250}
2251
2252static u32 ibmvnic_get_msglevel(struct net_device *netdev)
2253{
2254 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2255
2256 return adapter->msg_enable;
2257}
2258
2259static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data)
2260{
2261 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2262
2263 adapter->msg_enable = data;
2264}
2265
2266static u32 ibmvnic_get_link(struct net_device *netdev)
2267{
2268 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2269
2270 /* Don't need to send a query because we request a logical link up at
2271 * init and then we wait for link state indications
2272 */
2273 return adapter->logical_link_state;
2274}
2275
2276static void ibmvnic_get_ringparam(struct net_device *netdev,
2277 struct ethtool_ringparam *ring)
2278{
bc131b3a
JA		 2279 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2280
2281 ring->rx_max_pending = adapter->max_rx_add_entries_per_subcrq;
2282 ring->tx_max_pending = adapter->max_tx_entries_per_subcrq;
032c5e82
TF		 2283 ring->rx_mini_max_pending = 0;
2284 ring->rx_jumbo_max_pending = 0;
bc131b3a
JA		 2285 ring->rx_pending = adapter->req_rx_add_entries_per_subcrq;
2286 ring->tx_pending = adapter->req_tx_entries_per_subcrq;
032c5e82
TF		 2287 ring->rx_mini_pending = 0;
2288 ring->rx_jumbo_pending = 0;
2289}
2290
c26eba03
JA		 2291static int ibmvnic_set_ringparam(struct net_device *netdev,
2292 struct ethtool_ringparam *ring)
2293{
2294 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2295
2296 if (ring->rx_pending > adapter->max_rx_add_entries_per_subcrq ||
2297 ring->tx_pending > adapter->max_tx_entries_per_subcrq) {
2298 netdev_err(netdev, "Invalid request.\n");
2299 netdev_err(netdev, "Max tx buffers = %llu\n",
2300 adapter->max_rx_add_entries_per_subcrq);
2301 netdev_err(netdev, "Max rx buffers = %llu\n",
2302 adapter->max_tx_entries_per_subcrq);
2303 return -EINVAL;
2304 }
2305
2306 adapter->desired.rx_entries = ring->rx_pending;
2307 adapter->desired.tx_entries = ring->tx_pending;
2308
2309 return wait_for_reset(adapter);
2310}
2311
c2dbeb67
JA		 2312static void ibmvnic_get_channels(struct net_device *netdev,
2313 struct ethtool_channels *channels)
2314{
2315 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2316
2317 channels->max_rx = adapter->max_rx_queues;
2318 channels->max_tx = adapter->max_tx_queues;
2319 channels->max_other = 0;
2320 channels->max_combined = 0;
2321 channels->rx_count = adapter->req_rx_queues;
2322 channels->tx_count = adapter->req_tx_queues;
2323 channels->other_count = 0;
2324 channels->combined_count = 0;
2325}
2326
c26eba03
JA		 2327static int ibmvnic_set_channels(struct net_device *netdev,
2328 struct ethtool_channels *channels)
2329{
2330 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2331
2332 adapter->desired.rx_queues = channels->rx_count;
2333 adapter->desired.tx_queues = channels->tx_count;
2334
2335 return wait_for_reset(adapter);
2336}
2337
032c5e82
TF		 2338static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2339{
3d52b594 2340 struct ibmvnic_adapter *adapter = netdev_priv(dev);
032c5e82
TF		 2341 int i;
2342
2343 if (stringset != ETH_SS_STATS)
2344 return;
2345
2346 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN)
2347 memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN);
3d52b594
JA		 2348
2349 for (i = 0; i < adapter->req_tx_queues; i++) {
2350 snprintf(data, ETH_GSTRING_LEN, "tx%d_packets", i);
2351 data += ETH_GSTRING_LEN;
2352
2353 snprintf(data, ETH_GSTRING_LEN, "tx%d_bytes", i);
2354 data += ETH_GSTRING_LEN;
2355
2356 snprintf(data, ETH_GSTRING_LEN, "tx%d_dropped_packets", i);
2357 data += ETH_GSTRING_LEN;
2358 }
2359
2360 for (i = 0; i < adapter->req_rx_queues; i++) {
2361 snprintf(data, ETH_GSTRING_LEN, "rx%d_packets", i);
2362 data += ETH_GSTRING_LEN;
2363
2364 snprintf(data, ETH_GSTRING_LEN, "rx%d_bytes", i);
2365 data += ETH_GSTRING_LEN;
2366
2367 snprintf(data, ETH_GSTRING_LEN, "rx%d_interrupts", i);
2368 data += ETH_GSTRING_LEN;
2369 }
032c5e82
TF		 2370}
2371
2372static int ibmvnic_get_sset_count(struct net_device *dev, int sset)
2373{
3d52b594
JA		 2374 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2375
032c5e82
TF		 2376 switch (sset) {
2377 case ETH_SS_STATS:
3d52b594
JA		 2378 return ARRAY_SIZE(ibmvnic_stats) +
2379 adapter->req_tx_queues * NUM_TX_STATS +
2380 adapter->req_rx_queues * NUM_RX_STATS;
032c5e82
TF		 2381 default:
2382 return -EOPNOTSUPP;
2383 }
2384}
2385
2386static void ibmvnic_get_ethtool_stats(struct net_device *dev,
2387 struct ethtool_stats *stats, u64 *data)
2388{
2389 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2390 union ibmvnic_crq crq;
3d52b594 2391 int i, j;
9c4eaabd 2392 int rc;
032c5e82
TF		 2393
2394 memset(&crq, 0, sizeof(crq));
2395 crq.request_statistics.first = IBMVNIC_CRQ_CMD;
2396 crq.request_statistics.cmd = REQUEST_STATISTICS;
2397 crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token);
2398 crq.request_statistics.len =
2399 cpu_to_be32(sizeof(struct ibmvnic_statistics));
032c5e82
TF		 2400
2401 /* Wait for data to be written */
2402 init_completion(&adapter->stats_done);
9c4eaabd
TF		 2403 rc = ibmvnic_send_crq(adapter, &crq);
2404 if (rc)
2405 return;
032c5e82
TF		 2406 wait_for_completion(&adapter->stats_done);
2407
2408 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++)
52da5c11
JA		 2409 data[i] = be64_to_cpu(IBMVNIC_GET_STAT(adapter,
2410 ibmvnic_stats[i].offset));
3d52b594
JA		 2411
2412 for (j = 0; j < adapter->req_tx_queues; j++) {
2413 data[i] = adapter->tx_stats_buffers[j].packets;
2414 i++;
2415 data[i] = adapter->tx_stats_buffers[j].bytes;
2416 i++;
2417 data[i] = adapter->tx_stats_buffers[j].dropped_packets;
2418 i++;
2419 }
2420
2421 for (j = 0; j < adapter->req_rx_queues; j++) {
2422 data[i] = adapter->rx_stats_buffers[j].packets;
2423 i++;
2424 data[i] = adapter->rx_stats_buffers[j].bytes;
2425 i++;
2426 data[i] = adapter->rx_stats_buffers[j].interrupts;
2427 i++;
2428 }
032c5e82
TF		 2429}
2430
2431static const struct ethtool_ops ibmvnic_ethtool_ops = {
032c5e82
TF		 2432 .get_drvinfo = ibmvnic_get_drvinfo,
2433 .get_msglevel = ibmvnic_get_msglevel,
2434 .set_msglevel = ibmvnic_set_msglevel,
2435 .get_link = ibmvnic_get_link,
2436 .get_ringparam = ibmvnic_get_ringparam,
c26eba03 2437 .set_ringparam = ibmvnic_set_ringparam,
c2dbeb67 2438 .get_channels = ibmvnic_get_channels,
c26eba03 2439 .set_channels = ibmvnic_set_channels,
032c5e82
TF		 2440 .get_strings = ibmvnic_get_strings,
2441 .get_sset_count = ibmvnic_get_sset_count,
2442 .get_ethtool_stats = ibmvnic_get_ethtool_stats,
8a43379f 2443 .get_link_ksettings = ibmvnic_get_link_ksettings,
032c5e82
TF		 2444};
2445
2446/* Routines for managing CRQs/sCRQs */
2447
57a49436
NF		 2448static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter,
2449 struct ibmvnic_sub_crq_queue *scrq)
2450{
2451 int rc;
2452
2453 if (scrq->irq) {
2454 free_irq(scrq->irq, scrq);
2455 irq_dispose_mapping(scrq->irq);
2456 scrq->irq = 0;
2457 }
2458
c8b2ad0a 2459 memset(scrq->msgs, 0, 4 * PAGE_SIZE);
41f71467 2460 atomic_set(&scrq->used, 0);
57a49436
NF		 2461 scrq->cur = 0;
2462
2463 rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
2464 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
2465 return rc;
2466}
2467
2468static int reset_sub_crq_queues(struct ibmvnic_adapter *adapter)
2469{
2470 int i, rc;
2471
2472 for (i = 0; i < adapter->req_tx_queues; i++) {
d1cf33d9 2473 netdev_dbg(adapter->netdev, "Re-setting tx_scrq[%d]\n", i);
57a49436
NF		 2474 rc = reset_one_sub_crq_queue(adapter, adapter->tx_scrq[i]);
2475 if (rc)
2476 return rc;
2477 }
2478
2479 for (i = 0; i < adapter->req_rx_queues; i++) {
d1cf33d9 2480 netdev_dbg(adapter->netdev, "Re-setting rx_scrq[%d]\n", i);
57a49436
NF		 2481 rc = reset_one_sub_crq_queue(adapter, adapter->rx_scrq[i]);
2482 if (rc)
2483 return rc;
2484 }
2485
57a49436
NF		 2486 return rc;
2487}
2488
032c5e82 2489static void release_sub_crq_queue(struct ibmvnic_adapter *adapter,
d7c0ef36
NF		 2490 struct ibmvnic_sub_crq_queue *scrq,
2491 bool do_h_free)
032c5e82
TF		 2492{
2493 struct device *dev = &adapter->vdev->dev;
2494 long rc;
2495
2496 netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n");
2497
d7c0ef36
NF		 2498 if (do_h_free) {
2499 /* Close the sub-crqs */
2500 do {
2501 rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
2502 adapter->vdev->unit_address,
2503 scrq->crq_num);
2504 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
032c5e82 2505
d7c0ef36
NF		 2506 if (rc) {
2507 netdev_err(adapter->netdev,
2508 "Failed to release sub-CRQ %16lx, rc = %ld\n",
2509 scrq->crq_num, rc);
2510 }
ffa73855
TF		 2511 }
2512
032c5e82
TF		 2513 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
2514 DMA_BIDIRECTIONAL);
2515 free_pages((unsigned long)scrq->msgs, 2);
2516 kfree(scrq);
2517}
2518
2519static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
2520 *adapter)
2521{
2522 struct device *dev = &adapter->vdev->dev;
2523 struct ibmvnic_sub_crq_queue *scrq;
2524 int rc;
2525
1bb3c739 2526 scrq = kzalloc(sizeof(*scrq), GFP_KERNEL);
032c5e82
TF		 2527 if (!scrq)
2528 return NULL;
2529
7f7adc50 2530 scrq->msgs =
1bb3c739 2531 (union sub_crq *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 2);
032c5e82
TF		 2532 if (!scrq->msgs) {
2533 dev_warn(dev, "Couldn't allocate crq queue messages page\n");
2534 goto zero_page_failed;
2535 }
2536
2537 scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE,
2538 DMA_BIDIRECTIONAL);
2539 if (dma_mapping_error(dev, scrq->msg_token)) {
2540 dev_warn(dev, "Couldn't map crq queue messages page\n");
2541 goto map_failed;
2542 }
2543
2544 rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
2545 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
2546
2547 if (rc == H_RESOURCE)
2548 rc = ibmvnic_reset_crq(adapter);
2549
2550 if (rc == H_CLOSED) {
2551 dev_warn(dev, "Partner adapter not ready, waiting.\n");
2552 } else if (rc) {
2553 dev_warn(dev, "Error %d registering sub-crq\n", rc);
2554 goto reg_failed;
2555 }
2556
032c5e82
TF		 2557 scrq->adapter = adapter;
2558 scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
032c5e82
TF		 2559 spin_lock_init(&scrq->lock);
2560
2561 netdev_dbg(adapter->netdev,
2562 "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
2563 scrq->crq_num, scrq->hw_irq, scrq->irq);
2564
2565 return scrq;
2566
032c5e82
TF		 2567reg_failed:
2568 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
2569 DMA_BIDIRECTIONAL);
2570map_failed:
2571 free_pages((unsigned long)scrq->msgs, 2);
2572zero_page_failed:
2573 kfree(scrq);
2574
2575 return NULL;
2576}
2577
d7c0ef36 2578static void release_sub_crqs(struct ibmvnic_adapter *adapter, bool do_h_free)
032c5e82
TF		 2579{
2580 int i;
2581
2582 if (adapter->tx_scrq) {
82e3be32 2583 for (i = 0; i < adapter->num_active_tx_scrqs; i++) {
b510888f
NF		 2584 if (!adapter->tx_scrq[i])
2585 continue;
2586
d1cf33d9
NF		 2587 netdev_dbg(adapter->netdev, "Releasing tx_scrq[%d]\n",
2588 i);
b510888f 2589 if (adapter->tx_scrq[i]->irq) {
032c5e82
TF		 2590 free_irq(adapter->tx_scrq[i]->irq,
2591 adapter->tx_scrq[i]);
88eb98a0 2592 irq_dispose_mapping(adapter->tx_scrq[i]->irq);
b510888f 2593 adapter->tx_scrq[i]->irq = 0;
032c5e82 2594 }
b510888f 2595
d7c0ef36
NF		 2596 release_sub_crq_queue(adapter, adapter->tx_scrq[i],
2597 do_h_free);
b510888f
NF		 2598 }
2599
9501df3c 2600 kfree(adapter->tx_scrq);
032c5e82 2601 adapter->tx_scrq = NULL;
82e3be32 2602 adapter->num_active_tx_scrqs = 0;
032c5e82
TF		 2603 }
2604
2605 if (adapter->rx_scrq) {
82e3be32 2606 for (i = 0; i < adapter->num_active_rx_scrqs; i++) {
b510888f
NF		 2607 if (!adapter->rx_scrq[i])
2608 continue;
2609
d1cf33d9
NF		 2610 netdev_dbg(adapter->netdev, "Releasing rx_scrq[%d]\n",
2611 i);
b510888f 2612 if (adapter->rx_scrq[i]->irq) {
032c5e82
TF		 2613 free_irq(adapter->rx_scrq[i]->irq,
2614 adapter->rx_scrq[i]);
88eb98a0 2615 irq_dispose_mapping(adapter->rx_scrq[i]->irq);
b510888f 2616 adapter->rx_scrq[i]->irq = 0;
032c5e82 2617 }
032c5e82 2618
d7c0ef36
NF		 2619 release_sub_crq_queue(adapter, adapter->rx_scrq[i],
2620 do_h_free);
b510888f 2621 }
ea22d51a 2622
b510888f 2623 kfree(adapter->rx_scrq);
ea22d51a 2624 adapter->rx_scrq = NULL;
82e3be32 2625 adapter->num_active_rx_scrqs = 0;
ea22d51a 2626 }
ea22d51a
TF		 2627}
2628
032c5e82
TF		 2629static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
2630 struct ibmvnic_sub_crq_queue *scrq)
2631{
2632 struct device *dev = &adapter->vdev->dev;
2633 unsigned long rc;
2634
2635 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
2636 H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
2637 if (rc)
2638 dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
2639 scrq->hw_irq, rc);
2640 return rc;
2641}
2642
2643static int enable_scrq_irq(struct ibmvnic_adapter *adapter,
2644 struct ibmvnic_sub_crq_queue *scrq)
2645{
2646 struct device *dev = &adapter->vdev->dev;
2647 unsigned long rc;
f23e0643 2648 u64 val;
032c5e82
TF		 2649
2650 if (scrq->hw_irq > 0x100000000ULL) {
2651 dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
2652 return 1;
2653 }
2654
f23e0643
TF		 2655 val = (0xff000000) | scrq->hw_irq;
2656 rc = plpar_hcall_norets(H_EOI, val);
2657 if (rc)
2658 dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n",
2659 val, rc);
2660
032c5e82
TF		 2661 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
2662 H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
2663 if (rc)
2664 dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
2665 scrq->hw_irq, rc);
2666 return rc;
2667}
2668
2669static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter,
2670 struct ibmvnic_sub_crq_queue *scrq)
2671{
2672 struct device *dev = &adapter->vdev->dev;
06b3e357 2673 struct ibmvnic_tx_pool *tx_pool;
032c5e82
TF		 2674 struct ibmvnic_tx_buff *txbuff;
2675 union sub_crq *next;
2676 int index;
2677 int i, j;
37e40fa8 2678 u8 *first;
032c5e82
TF		 2679
2680restart_loop:
2681 while (pending_scrq(adapter, scrq)) {
2682 unsigned int pool = scrq->pool_index;
ffc385b9 2683 int num_entries = 0;
032c5e82
TF		 2684
2685 next = ibmvnic_next_scrq(adapter, scrq);
2686 for (i = 0; i < next->tx_comp.num_comps; i++) {
2687 if (next->tx_comp.rcs[i]) {
2688 dev_err(dev, "tx error %x\n",
2689 next->tx_comp.rcs[i]);
2690 continue;
2691 }
2692 index = be32_to_cpu(next->tx_comp.correlators[i]);
06b3e357
TF		 2693 if (index & IBMVNIC_TSO_POOL_MASK) {
2694 tx_pool = &adapter->tso_pool[pool];
2695 index &= ~IBMVNIC_TSO_POOL_MASK;
2696 } else {
2697 tx_pool = &adapter->tx_pool[pool];
2698 }
2699
2700 txbuff = &tx_pool->tx_buff[index];
032c5e82
TF		 2701
2702 for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) {
2703 if (!txbuff->data_dma[j])
2704 continue;
2705
2706 txbuff->data_dma[j] = 0;
032c5e82 2707 }
ad7775dc 2708 /* if sub_crq was sent indirectly */
37e40fa8
TF		 2709 first = &txbuff->indir_arr[0].generic.first;
2710 if (*first == IBMVNIC_CRQ_CMD) {
ad7775dc
TF		 2711 dma_unmap_single(dev, txbuff->indir_dma,
2712 sizeof(txbuff->indir_arr),
2713 DMA_TO_DEVICE);
37e40fa8 2714 *first = 0;
ad7775dc 2715 }
032c5e82 2716
142c0ac4 2717 if (txbuff->last_frag) {
032c5e82 2718 dev_kfree_skb_any(txbuff->skb);
7c3e7de3 2719 txbuff->skb = NULL;
142c0ac4 2720 }
032c5e82 2721
ffc385b9
TF		 2722 num_entries += txbuff->num_entries;
2723
06b3e357
TF		 2724 tx_pool->free_map[tx_pool->producer_index] = index;
2725 tx_pool->producer_index =
2726 (tx_pool->producer_index + 1) %
2727 tx_pool->num_buffers;
032c5e82
TF		 2728 }
2729 /* remove tx_comp scrq*/
2730 next->tx_comp.first = 0;
7c3e7de3 2731
ffc385b9 2732 if (atomic_sub_return(num_entries, &scrq->used) <=
7c3e7de3
NF		 2733 (adapter->req_tx_entries_per_subcrq / 2) &&
2734 __netif_subqueue_stopped(adapter->netdev,
2735 scrq->pool_index)) {
2736 netif_wake_subqueue(adapter->netdev, scrq->pool_index);
0aecb13c
TF		 2737 netdev_dbg(adapter->netdev, "Started queue %d\n",
2738 scrq->pool_index);
7c3e7de3 2739 }
032c5e82
TF		 2740 }
2741
2742 enable_scrq_irq(adapter, scrq);
2743
2744 if (pending_scrq(adapter, scrq)) {
2745 disable_scrq_irq(adapter, scrq);
2746 goto restart_loop;
2747 }
2748
2749 return 0;
2750}
2751
2752static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance)
2753{
2754 struct ibmvnic_sub_crq_queue *scrq = instance;
2755 struct ibmvnic_adapter *adapter = scrq->adapter;
2756
2757 disable_scrq_irq(adapter, scrq);
2758 ibmvnic_complete_tx(adapter, scrq);
2759
2760 return IRQ_HANDLED;
2761}
2762
2763static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
2764{
2765 struct ibmvnic_sub_crq_queue *scrq = instance;
2766 struct ibmvnic_adapter *adapter = scrq->adapter;
2767
09fb35ea
NF		 2768 /* When booting a kdump kernel we can hit pending interrupts
2769 * prior to completing driver initialization.
2770 */
2771 if (unlikely(adapter->state != VNIC_OPEN))
2772 return IRQ_NONE;
2773
3d52b594
JA		 2774 adapter->rx_stats_buffers[scrq->scrq_num].interrupts++;
2775
032c5e82
TF		 2776 if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
2777 disable_scrq_irq(adapter, scrq);
2778 __napi_schedule(&adapter->napi[scrq->scrq_num]);
2779 }
2780
2781 return IRQ_HANDLED;
2782}
2783
ea22d51a
TF		 2784static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
2785{
2786 struct device *dev = &adapter->vdev->dev;
2787 struct ibmvnic_sub_crq_queue *scrq;
2788 int i = 0, j = 0;
2789 int rc = 0;
2790
2791 for (i = 0; i < adapter->req_tx_queues; i++) {
d1cf33d9
NF		 2792 netdev_dbg(adapter->netdev, "Initializing tx_scrq[%d] irq\n",
2793 i);
ea22d51a
TF		 2794 scrq = adapter->tx_scrq[i];
2795 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
2796
99c1790e 2797 if (!scrq->irq) {
ea22d51a
TF		 2798 rc = -EINVAL;
2799 dev_err(dev, "Error mapping irq\n");
2800 goto req_tx_irq_failed;
2801 }
2802
2803 rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
2804 0, "ibmvnic_tx", scrq);
2805
2806 if (rc) {
2807 dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
2808 scrq->irq, rc);
2809 irq_dispose_mapping(scrq->irq);
af9090c2 2810 goto req_tx_irq_failed;
ea22d51a
TF		 2811 }
2812 }
2813
2814 for (i = 0; i < adapter->req_rx_queues; i++) {
d1cf33d9
NF		 2815 netdev_dbg(adapter->netdev, "Initializing rx_scrq[%d] irq\n",
2816 i);
ea22d51a
TF		 2817 scrq = adapter->rx_scrq[i];
2818 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
99c1790e 2819 if (!scrq->irq) {
ea22d51a
TF		 2820 rc = -EINVAL;
2821 dev_err(dev, "Error mapping irq\n");
2822 goto req_rx_irq_failed;
2823 }
2824 rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
2825 0, "ibmvnic_rx", scrq);
2826 if (rc) {
2827 dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
2828 scrq->irq, rc);
2829 irq_dispose_mapping(scrq->irq);
2830 goto req_rx_irq_failed;
2831 }
2832 }
2833 return rc;
2834
2835req_rx_irq_failed:
8bf371e6 2836 for (j = 0; j < i; j++) {
ea22d51a
TF		 2837 free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
2838 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
8bf371e6 2839 }
ea22d51a
TF		 2840 i = adapter->req_tx_queues;
2841req_tx_irq_failed:
8bf371e6 2842 for (j = 0; j < i; j++) {
ea22d51a
TF		 2843 free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
2844 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
8bf371e6 2845 }
d7c0ef36 2846 release_sub_crqs(adapter, 1);
ea22d51a
TF		 2847 return rc;
2848}
2849
d346b9bc 2850static int init_sub_crqs(struct ibmvnic_adapter *adapter)
032c5e82
TF		 2851{
2852 struct device *dev = &adapter->vdev->dev;
2853 struct ibmvnic_sub_crq_queue **allqueues;
2854 int registered_queues = 0;
032c5e82
TF		 2855 int total_queues;
2856 int more = 0;
ea22d51a 2857 int i;
032c5e82 2858
032c5e82
TF		 2859 total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
2860
1bb3c739 2861 allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_KERNEL);
032c5e82 2862 if (!allqueues)
d346b9bc 2863 return -1;
032c5e82
TF		 2864
2865 for (i = 0; i < total_queues; i++) {
2866 allqueues[i] = init_sub_crq_queue(adapter);
2867 if (!allqueues[i]) {
2868 dev_warn(dev, "Couldn't allocate all sub-crqs\n");
2869 break;
2870 }
2871 registered_queues++;
2872 }
2873
2874 /* Make sure we were able to register the minimum number of queues */
2875 if (registered_queues <
2876 adapter->min_tx_queues + adapter->min_rx_queues) {
2877 dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n");
2878 goto tx_failed;
2879 }
2880
2881 /* Distribute the failed allocated queues*/
2882 for (i = 0; i < total_queues - registered_queues + more ; i++) {
2883 netdev_dbg(adapter->netdev, "Reducing number of queues\n");
2884 switch (i % 3) {
2885 case 0:
2886 if (adapter->req_rx_queues > adapter->min_rx_queues)
2887 adapter->req_rx_queues--;
2888 else
2889 more++;
2890 break;
2891 case 1:
2892 if (adapter->req_tx_queues > adapter->min_tx_queues)
2893 adapter->req_tx_queues--;
2894 else
2895 more++;
2896 break;
2897 }
2898 }
2899
2900 adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
1bb3c739 2901 sizeof(*adapter->tx_scrq), GFP_KERNEL);
032c5e82
TF		 2902 if (!adapter->tx_scrq)
2903 goto tx_failed;
2904
2905 for (i = 0; i < adapter->req_tx_queues; i++) {
2906 adapter->tx_scrq[i] = allqueues[i];
2907 adapter->tx_scrq[i]->pool_index = i;
82e3be32 2908 adapter->num_active_tx_scrqs++;
032c5e82
TF		 2909 }
2910
2911 adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
1bb3c739 2912 sizeof(*adapter->rx_scrq), GFP_KERNEL);
032c5e82
TF		 2913 if (!adapter->rx_scrq)
2914 goto rx_failed;
2915
2916 for (i = 0; i < adapter->req_rx_queues; i++) {
2917 adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
2918 adapter->rx_scrq[i]->scrq_num = i;
82e3be32 2919 adapter->num_active_rx_scrqs++;
032c5e82
TF		 2920 }
2921
d346b9bc
NF		 2922 kfree(allqueues);
2923 return 0;
2924
2925rx_failed:
2926 kfree(adapter->tx_scrq);
2927 adapter->tx_scrq = NULL;
2928tx_failed:
2929 for (i = 0; i < registered_queues; i++)
d7c0ef36 2930 release_sub_crq_queue(adapter, allqueues[i], 1);
d346b9bc
NF		 2931 kfree(allqueues);
2932 return -1;
2933}
2934
2935static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry)
2936{
2937 struct device *dev = &adapter->vdev->dev;
2938 union ibmvnic_crq crq;
c26eba03 2939 int max_entries;
d346b9bc
NF		 2940
2941 if (!retry) {
2942 /* Sub-CRQ entries are 32 byte long */
2943 int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
2944
2945 if (adapter->min_tx_entries_per_subcrq > entries_page ||
2946 adapter->min_rx_add_entries_per_subcrq > entries_page) {
2947 dev_err(dev, "Fatal, invalid entries per sub-crq\n");
2948 return;
2949 }
2950
c26eba03
JA		 2951 if (adapter->desired.mtu)
2952 adapter->req_mtu = adapter->desired.mtu;
2953 else
2954 adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN;
2955
2956 if (!adapter->desired.tx_entries)
2957 adapter->desired.tx_entries =
2958 adapter->max_tx_entries_per_subcrq;
2959 if (!adapter->desired.rx_entries)
2960 adapter->desired.rx_entries =
2961 adapter->max_rx_add_entries_per_subcrq;
2962
2963 max_entries = IBMVNIC_MAX_LTB_SIZE /
2964 (adapter->req_mtu + IBMVNIC_BUFFER_HLEN);
2965
2966 if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) *
2967 adapter->desired.tx_entries > IBMVNIC_MAX_LTB_SIZE) {
2968 adapter->desired.tx_entries = max_entries;
2969 }
d346b9bc 2970
c26eba03
JA		 2971 if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) *
2972 adapter->desired.rx_entries > IBMVNIC_MAX_LTB_SIZE) {
2973 adapter->desired.rx_entries = max_entries;
2974 }
2975
2976 if (adapter->desired.tx_entries)
2977 adapter->req_tx_entries_per_subcrq =
2978 adapter->desired.tx_entries;
2979 else
2980 adapter->req_tx_entries_per_subcrq =
2981 adapter->max_tx_entries_per_subcrq;
2982
2983 if (adapter->desired.rx_entries)
2984 adapter->req_rx_add_entries_per_subcrq =
2985 adapter->desired.rx_entries;
2986 else
2987 adapter->req_rx_add_entries_per_subcrq =
2988 adapter->max_rx_add_entries_per_subcrq;
2989
2990 if (adapter->desired.tx_queues)
2991 adapter->req_tx_queues =
2992 adapter->desired.tx_queues;
2993 else
2994 adapter->req_tx_queues =
2995 adapter->opt_tx_comp_sub_queues;
2996
2997 if (adapter->desired.rx_queues)
2998 adapter->req_rx_queues =
2999 adapter->desired.rx_queues;
3000 else
3001 adapter->req_rx_queues =
3002 adapter->opt_rx_comp_queues;
3003
3004 adapter->req_rx_add_queues = adapter->max_rx_add_queues;
d346b9bc
NF		 3005 }
3006
032c5e82
TF		 3007 memset(&crq, 0, sizeof(crq));
3008 crq.request_capability.first = IBMVNIC_CRQ_CMD;
3009 crq.request_capability.cmd = REQUEST_CAPABILITY;
3010
3011 crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
de89e854 3012 crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
901e040a 3013 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3014 ibmvnic_send_crq(adapter, &crq);
3015
3016 crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
de89e854 3017 crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
901e040a 3018 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3019 ibmvnic_send_crq(adapter, &crq);
3020
3021 crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
de89e854 3022 crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
901e040a 3023 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3024 ibmvnic_send_crq(adapter, &crq);
3025
3026 crq.request_capability.capability =
3027 cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
3028 crq.request_capability.number =
de89e854 3029 cpu_to_be64(adapter->req_tx_entries_per_subcrq);
901e040a 3030 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3031 ibmvnic_send_crq(adapter, &crq);
3032
3033 crq.request_capability.capability =
3034 cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
3035 crq.request_capability.number =
de89e854 3036 cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
901e040a 3037 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3038 ibmvnic_send_crq(adapter, &crq);
3039
3040 crq.request_capability.capability = cpu_to_be16(REQ_MTU);
de89e854 3041 crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
901e040a 3042 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3043 ibmvnic_send_crq(adapter, &crq);
3044
3045 if (adapter->netdev->flags & IFF_PROMISC) {
3046 if (adapter->promisc_supported) {
3047 crq.request_capability.capability =
3048 cpu_to_be16(PROMISC_REQUESTED);
de89e854 3049 crq.request_capability.number = cpu_to_be64(1);
901e040a 3050 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3051 ibmvnic_send_crq(adapter, &crq);
3052 }
3053 } else {
3054 crq.request_capability.capability =
3055 cpu_to_be16(PROMISC_REQUESTED);
de89e854 3056 crq.request_capability.number = cpu_to_be64(0);
901e040a 3057 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3058 ibmvnic_send_crq(adapter, &crq);
3059 }
032c5e82
TF		 3060}
3061
3062static int pending_scrq(struct ibmvnic_adapter *adapter,
3063 struct ibmvnic_sub_crq_queue *scrq)
3064{
3065 union sub_crq *entry = &scrq->msgs[scrq->cur];
3066
1cf9cc72 3067 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP)
032c5e82
TF		 3068 return 1;
3069 else
3070 return 0;
3071}
3072
3073static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
3074 struct ibmvnic_sub_crq_queue *scrq)
3075{
3076 union sub_crq *entry;
3077 unsigned long flags;
3078
3079 spin_lock_irqsave(&scrq->lock, flags);
3080 entry = &scrq->msgs[scrq->cur];
3081 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
3082 if (++scrq->cur == scrq->size)
3083 scrq->cur = 0;
3084 } else {
3085 entry = NULL;
3086 }
3087 spin_unlock_irqrestore(&scrq->lock, flags);
3088
3089 return entry;
3090}
3091
3092static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
3093{
3094 struct ibmvnic_crq_queue *queue = &adapter->crq;
3095 union ibmvnic_crq *crq;
3096
3097 crq = &queue->msgs[queue->cur];
3098 if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
3099 if (++queue->cur == queue->size)
3100 queue->cur = 0;
3101 } else {
3102 crq = NULL;
3103 }
3104
3105 return crq;
3106}
3107
3108static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
3109 union sub_crq *sub_crq)
3110{
3111 unsigned int ua = adapter->vdev->unit_address;
3112 struct device *dev = &adapter->vdev->dev;
3113 u64 *u64_crq = (u64 *)sub_crq;
3114 int rc;
3115
3116 netdev_dbg(adapter->netdev,
3117 "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
3118 (unsigned long int)cpu_to_be64(remote_handle),
3119 (unsigned long int)cpu_to_be64(u64_crq[0]),
3120 (unsigned long int)cpu_to_be64(u64_crq[1]),
3121 (unsigned long int)cpu_to_be64(u64_crq[2]),
3122 (unsigned long int)cpu_to_be64(u64_crq[3]));
3123
3124 /* Make sure the hypervisor sees the complete request */
3125 mb();
3126
3127 rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
3128 cpu_to_be64(remote_handle),
3129 cpu_to_be64(u64_crq[0]),
3130 cpu_to_be64(u64_crq[1]),
3131 cpu_to_be64(u64_crq[2]),
3132 cpu_to_be64(u64_crq[3]));
3133
3134 if (rc) {
3135 if (rc == H_CLOSED)
3136 dev_warn(dev, "CRQ Queue closed\n");
3137 dev_err(dev, "Send error (rc=%d)\n", rc);
3138 }
3139
3140 return rc;
3141}
3142
ad7775dc
TF		 3143static int send_subcrq_indirect(struct ibmvnic_adapter *adapter,
3144 u64 remote_handle, u64 ioba, u64 num_entries)
3145{
3146 unsigned int ua = adapter->vdev->unit_address;
3147 struct device *dev = &adapter->vdev->dev;
3148 int rc;
3149
3150 /* Make sure the hypervisor sees the complete request */
3151 mb();
3152 rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua,
3153 cpu_to_be64(remote_handle),
3154 ioba, num_entries);
3155
3156 if (rc) {
3157 if (rc == H_CLOSED)
3158 dev_warn(dev, "CRQ Queue closed\n");
3159 dev_err(dev, "Send (indirect) error (rc=%d)\n", rc);
3160 }
3161
3162 return rc;
3163}
3164
032c5e82
TF		 3165static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
3166 union ibmvnic_crq *crq)
3167{
3168 unsigned int ua = adapter->vdev->unit_address;
3169 struct device *dev = &adapter->vdev->dev;
3170 u64 *u64_crq = (u64 *)crq;
3171 int rc;
3172
3173 netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
3174 (unsigned long int)cpu_to_be64(u64_crq[0]),
3175 (unsigned long int)cpu_to_be64(u64_crq[1]));
3176
5153698e
TF		 3177 if (!adapter->crq.active &&
3178 crq->generic.first != IBMVNIC_CRQ_INIT_CMD) {
3179 dev_warn(dev, "Invalid request detected while CRQ is inactive, possible device state change during reset\n");
3180 return -EINVAL;
3181 }
3182
032c5e82
TF		 3183 /* Make sure the hypervisor sees the complete request */
3184 mb();
3185
3186 rc = plpar_hcall_norets(H_SEND_CRQ, ua,
3187 cpu_to_be64(u64_crq[0]),
3188 cpu_to_be64(u64_crq[1]));
3189
3190 if (rc) {
ec95dffa 3191 if (rc == H_CLOSED) {
032c5e82 3192 dev_warn(dev, "CRQ Queue closed\n");
ec95dffa
NF		 3193 if (adapter->resetting)
3194 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
3195 }
3196
032c5e82
TF		 3197 dev_warn(dev, "Send error (rc=%d)\n", rc);
3198 }
3199
3200 return rc;
3201}
3202
3203static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
3204{
3205 union ibmvnic_crq crq;
3206
3207 memset(&crq, 0, sizeof(crq));
3208 crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
3209 crq.generic.cmd = IBMVNIC_CRQ_INIT;
3210 netdev_dbg(adapter->netdev, "Sending CRQ init\n");
3211
3212 return ibmvnic_send_crq(adapter, &crq);
3213}
3214
032c5e82
TF		 3215static int send_version_xchg(struct ibmvnic_adapter *adapter)
3216{
3217 union ibmvnic_crq crq;
3218
3219 memset(&crq, 0, sizeof(crq));
3220 crq.version_exchange.first = IBMVNIC_CRQ_CMD;
3221 crq.version_exchange.cmd = VERSION_EXCHANGE;
3222 crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
3223
3224 return ibmvnic_send_crq(adapter, &crq);
3225}
3226
37798d02
NF		 3227struct vnic_login_client_data {
3228 u8 type;
3229 __be16 len;
08ea556e 3230 char name[];
37798d02
NF		 3231} __packed;
3232
3233static int vnic_client_data_len(struct ibmvnic_adapter *adapter)
3234{
3235 int len;
3236
3237 /* Calculate the amount of buffer space needed for the
3238 * vnic client data in the login buffer. There are four entries,
3239 * OS name, LPAR name, device name, and a null last entry.
3240 */
3241 len = 4 * sizeof(struct vnic_login_client_data);
3242 len += 6; /* "Linux" plus NULL */
3243 len += strlen(utsname()->nodename) + 1;
3244 len += strlen(adapter->netdev->name) + 1;
3245
3246 return len;
3247}
3248
3249static void vnic_add_client_data(struct ibmvnic_adapter *adapter,
3250 struct vnic_login_client_data *vlcd)
3251{
3252 const char *os_name = "Linux";
3253 int len;
3254
3255 /* Type 1 - LPAR OS */
3256 vlcd->type = 1;
3257 len = strlen(os_name) + 1;
3258 vlcd->len = cpu_to_be16(len);
08ea556e
KC		 3259 strncpy(vlcd->name, os_name, len);
3260 vlcd = (struct vnic_login_client_data *)(vlcd->name + len);
37798d02
NF		 3261
3262 /* Type 2 - LPAR name */
3263 vlcd->type = 2;
3264 len = strlen(utsname()->nodename) + 1;
3265 vlcd->len = cpu_to_be16(len);
08ea556e
KC		 3266 strncpy(vlcd->name, utsname()->nodename, len);
3267 vlcd = (struct vnic_login_client_data *)(vlcd->name + len);
37798d02
NF		 3268
3269 /* Type 3 - device name */
3270 vlcd->type = 3;
3271 len = strlen(adapter->netdev->name) + 1;
3272 vlcd->len = cpu_to_be16(len);
08ea556e 3273 strncpy(vlcd->name, adapter->netdev->name, len);
37798d02
NF		 3274}
3275
20a8ab74 3276static int send_login(struct ibmvnic_adapter *adapter)
032c5e82
TF		 3277{
3278 struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
3279 struct ibmvnic_login_buffer *login_buffer;
032c5e82
TF		 3280 struct device *dev = &adapter->vdev->dev;
3281 dma_addr_t rsp_buffer_token;
3282 dma_addr_t buffer_token;
3283 size_t rsp_buffer_size;
3284 union ibmvnic_crq crq;
032c5e82
TF		 3285 size_t buffer_size;
3286 __be64 *tx_list_p;
3287 __be64 *rx_list_p;
37798d02
NF		 3288 int client_data_len;
3289 struct vnic_login_client_data *vlcd;
032c5e82
TF		 3290 int i;
3291
20a8ab74
TF		 3292 if (!adapter->tx_scrq || !adapter->rx_scrq) {
3293 netdev_err(adapter->netdev,
3294 "RX or TX queues are not allocated, device login failed\n");
3295 return -1;
3296 }
3297
34f0f4e3 3298 release_login_rsp_buffer(adapter);
37798d02
NF		 3299 client_data_len = vnic_client_data_len(adapter);
3300
032c5e82
TF		 3301 buffer_size =
3302 sizeof(struct ibmvnic_login_buffer) +
37798d02
NF		 3303 sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues) +
3304 client_data_len;
032c5e82 3305
37798d02 3306 login_buffer = kzalloc(buffer_size, GFP_ATOMIC);
032c5e82
TF		 3307 if (!login_buffer)
3308 goto buf_alloc_failed;
3309
3310 buffer_token = dma_map_single(dev, login_buffer, buffer_size,
3311 DMA_TO_DEVICE);
3312 if (dma_mapping_error(dev, buffer_token)) {
3313 dev_err(dev, "Couldn't map login buffer\n");
3314 goto buf_map_failed;
3315 }
3316
498cd8e4
JA		 3317 rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) +
3318 sizeof(u64) * adapter->req_tx_queues +
3319 sizeof(u64) * adapter->req_rx_queues +
3320 sizeof(u64) * adapter->req_rx_queues +
3321 sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS;
032c5e82
TF		 3322
3323 login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
3324 if (!login_rsp_buffer)
3325 goto buf_rsp_alloc_failed;
3326
3327 rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
3328 rsp_buffer_size, DMA_FROM_DEVICE);
3329 if (dma_mapping_error(dev, rsp_buffer_token)) {
3330 dev_err(dev, "Couldn't map login rsp buffer\n");
3331 goto buf_rsp_map_failed;
3332 }
661a2622 3333
032c5e82
TF		 3334 adapter->login_buf = login_buffer;
3335 adapter->login_buf_token = buffer_token;
3336 adapter->login_buf_sz = buffer_size;
3337 adapter->login_rsp_buf = login_rsp_buffer;
3338 adapter->login_rsp_buf_token = rsp_buffer_token;
3339 adapter->login_rsp_buf_sz = rsp_buffer_size;
3340
3341 login_buffer->len = cpu_to_be32(buffer_size);
3342 login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
3343 login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
3344 login_buffer->off_txcomp_subcrqs =
3345 cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
3346 login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
3347 login_buffer->off_rxcomp_subcrqs =
3348 cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
3349 sizeof(u64) * adapter->req_tx_queues);
3350 login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
3351 login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
3352
3353 tx_list_p = (__be64 *)((char *)login_buffer +
3354 sizeof(struct ibmvnic_login_buffer));
3355 rx_list_p = (__be64 *)((char *)login_buffer +
3356 sizeof(struct ibmvnic_login_buffer) +
3357 sizeof(u64) * adapter->req_tx_queues);
3358
3359 for (i = 0; i < adapter->req_tx_queues; i++) {
3360 if (adapter->tx_scrq[i]) {
3361 tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
3362 crq_num);
3363 }
3364 }
3365
3366 for (i = 0; i < adapter->req_rx_queues; i++) {
3367 if (adapter->rx_scrq[i]) {
3368 rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
3369 crq_num);
3370 }
3371 }
3372
37798d02
NF		 3373 /* Insert vNIC login client data */
3374 vlcd = (struct vnic_login_client_data *)
3375 ((char *)rx_list_p + (sizeof(u64) * adapter->req_rx_queues));
3376 login_buffer->client_data_offset =
3377 cpu_to_be32((char *)vlcd - (char *)login_buffer);
3378 login_buffer->client_data_len = cpu_to_be32(client_data_len);
3379
3380 vnic_add_client_data(adapter, vlcd);
3381
032c5e82
TF		 3382 netdev_dbg(adapter->netdev, "Login Buffer:\n");
3383 for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
3384 netdev_dbg(adapter->netdev, "%016lx\n",
3385 ((unsigned long int *)(adapter->login_buf))[i]);
3386 }
3387
3388 memset(&crq, 0, sizeof(crq));
3389 crq.login.first = IBMVNIC_CRQ_CMD;
3390 crq.login.cmd = LOGIN;
3391 crq.login.ioba = cpu_to_be32(buffer_token);
3392 crq.login.len = cpu_to_be32(buffer_size);
032c5e82
TF		 3393 ibmvnic_send_crq(adapter, &crq);
3394
20a8ab74 3395 return 0;
032c5e82 3396
032c5e82
TF		 3397buf_rsp_map_failed:
3398 kfree(login_rsp_buffer);
3399buf_rsp_alloc_failed:
3400 dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
3401buf_map_failed:
3402 kfree(login_buffer);
3403buf_alloc_failed:
20a8ab74 3404 return -1;
032c5e82
TF		 3405}
3406
9c4eaabd
TF		 3407static int send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
3408 u32 len, u8 map_id)
032c5e82
TF		 3409{
3410 union ibmvnic_crq crq;
3411
3412 memset(&crq, 0, sizeof(crq));
3413 crq.request_map.first = IBMVNIC_CRQ_CMD;
3414 crq.request_map.cmd = REQUEST_MAP;
3415 crq.request_map.map_id = map_id;
3416 crq.request_map.ioba = cpu_to_be32(addr);
3417 crq.request_map.len = cpu_to_be32(len);
9c4eaabd 3418 return ibmvnic_send_crq(adapter, &crq);
032c5e82
TF		 3419}
3420
9c4eaabd 3421static int send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
032c5e82
TF		 3422{
3423 union ibmvnic_crq crq;
3424
3425 memset(&crq, 0, sizeof(crq));
3426 crq.request_unmap.first = IBMVNIC_CRQ_CMD;
3427 crq.request_unmap.cmd = REQUEST_UNMAP;
3428 crq.request_unmap.map_id = map_id;
9c4eaabd 3429 return ibmvnic_send_crq(adapter, &crq);
032c5e82
TF		 3430}
3431
3432static void send_map_query(struct ibmvnic_adapter *adapter)
3433{
3434 union ibmvnic_crq crq;
3435
3436 memset(&crq, 0, sizeof(crq));
3437 crq.query_map.first = IBMVNIC_CRQ_CMD;
3438 crq.query_map.cmd = QUERY_MAP;
3439 ibmvnic_send_crq(adapter, &crq);
3440}
3441
3442/* Send a series of CRQs requesting various capabilities of the VNIC server */
3443static void send_cap_queries(struct ibmvnic_adapter *adapter)
3444{
3445 union ibmvnic_crq crq;
3446
901e040a 3447 atomic_set(&adapter->running_cap_crqs, 0);
032c5e82
TF		 3448 memset(&crq, 0, sizeof(crq));
3449 crq.query_capability.first = IBMVNIC_CRQ_CMD;
3450 crq.query_capability.cmd = QUERY_CAPABILITY;
3451
3452 crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
901e040a 3453 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3454 ibmvnic_send_crq(adapter, &crq);
3455
3456 crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
901e040a 3457 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3458 ibmvnic_send_crq(adapter, &crq);
3459
3460 crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
901e040a 3461 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3462 ibmvnic_send_crq(adapter, &crq);
3463
3464 crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
901e040a 3465 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3466 ibmvnic_send_crq(adapter, &crq);
3467
3468 crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
901e040a 3469 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3470 ibmvnic_send_crq(adapter, &crq);
3471
3472 crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
901e040a 3473 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3474 ibmvnic_send_crq(adapter, &crq);
3475
3476 crq.query_capability.capability =
3477 cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
901e040a 3478 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3479 ibmvnic_send_crq(adapter, &crq);
3480
3481 crq.query_capability.capability =
3482 cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
901e040a 3483 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3484 ibmvnic_send_crq(adapter, &crq);
3485
3486 crq.query_capability.capability =
3487 cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
901e040a 3488 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3489 ibmvnic_send_crq(adapter, &crq);
3490
3491 crq.query_capability.capability =
3492 cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
901e040a 3493 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3494 ibmvnic_send_crq(adapter, &crq);
3495
3496 crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
901e040a 3497 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3498 ibmvnic_send_crq(adapter, &crq);
3499
3500 crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
901e040a 3501 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3502 ibmvnic_send_crq(adapter, &crq);
3503
3504 crq.query_capability.capability = cpu_to_be16(MIN_MTU);
901e040a 3505 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3506 ibmvnic_send_crq(adapter, &crq);
3507
3508 crq.query_capability.capability = cpu_to_be16(MAX_MTU);
901e040a 3509 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3510 ibmvnic_send_crq(adapter, &crq);
3511
3512 crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
901e040a 3513 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3514 ibmvnic_send_crq(adapter, &crq);
3515
3516 crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
901e040a 3517 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3518 ibmvnic_send_crq(adapter, &crq);
3519
6052d5e2
MFV		 3520 crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION);
3521 atomic_inc(&adapter->running_cap_crqs);
3522 ibmvnic_send_crq(adapter, &crq);
3523
032c5e82 3524 crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
901e040a 3525 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3526 ibmvnic_send_crq(adapter, &crq);
3527
3528 crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
901e040a 3529 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3530 ibmvnic_send_crq(adapter, &crq);
3531
3532 crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
901e040a 3533 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3534 ibmvnic_send_crq(adapter, &crq);
3535
3536 crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
901e040a 3537 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3538 ibmvnic_send_crq(adapter, &crq);
3539
3540 crq.query_capability.capability =
3541 cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
901e040a 3542 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3543 ibmvnic_send_crq(adapter, &crq);
3544
3545 crq.query_capability.capability =
3546 cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
901e040a 3547 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3548 ibmvnic_send_crq(adapter, &crq);
3549
3550 crq.query_capability.capability =
3551 cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
901e040a 3552 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3553 ibmvnic_send_crq(adapter, &crq);
3554
3555 crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
901e040a 3556 atomic_inc(&adapter->running_cap_crqs);
032c5e82
TF		 3557 ibmvnic_send_crq(adapter, &crq);
3558}
3559
4e6759be
DANR		 3560static void handle_vpd_size_rsp(union ibmvnic_crq *crq,
3561 struct ibmvnic_adapter *adapter)
3562{
3563 struct device *dev = &adapter->vdev->dev;
3564
3565 if (crq->get_vpd_size_rsp.rc.code) {
3566 dev_err(dev, "Error retrieving VPD size, rc=%x\n",
3567 crq->get_vpd_size_rsp.rc.code);
3568 complete(&adapter->fw_done);
3569 return;
3570 }
3571
3572 adapter->vpd->len = be64_to_cpu(crq->get_vpd_size_rsp.len);
3573 complete(&adapter->fw_done);
3574}
3575
3576static void handle_vpd_rsp(union ibmvnic_crq *crq,
3577 struct ibmvnic_adapter *adapter)
3578{
3579 struct device *dev = &adapter->vdev->dev;
21a2545b 3580 unsigned char *substr = NULL;
4e6759be
DANR		 3581 u8 fw_level_len = 0;
3582
3583 memset(adapter->fw_version, 0, 32);
3584
3585 dma_unmap_single(dev, adapter->vpd->dma_addr, adapter->vpd->len,
3586 DMA_FROM_DEVICE);
3587
3588 if (crq->get_vpd_rsp.rc.code) {
3589 dev_err(dev, "Error retrieving VPD from device, rc=%x\n",
3590 crq->get_vpd_rsp.rc.code);
3591 goto complete;
3592 }
3593
3594 /* get the position of the firmware version info
3595 * located after the ASCII 'RM' substring in the buffer
3596 */
3597 substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
3598 if (!substr) {
a107311d 3599 dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
4e6759be
DANR		 3600 goto complete;
3601 }
3602
3603 /* get length of firmware level ASCII substring */
3604 if ((substr + 2) < (adapter->vpd->buff + adapter->vpd->len)) {
3605 fw_level_len = *(substr + 2);
3606 } else {
3607 dev_info(dev, "Length of FW substr extrapolated VDP buff\n");
3608 goto complete;
3609 }
3610
3611 /* copy firmware version string from vpd into adapter */
3612 if ((substr + 3 + fw_level_len) <
3613 (adapter->vpd->buff + adapter->vpd->len)) {
21a2545b 3614 strncpy((char *)adapter->fw_version, substr + 3, fw_level_len);
4e6759be
DANR		 3615 } else {
3616 dev_info(dev, "FW substr extrapolated VPD buff\n");
3617 }
3618
3619complete:
21a2545b
DANR		 3620 if (adapter->fw_version[0] == '\0')
3621 strncpy((char *)adapter->fw_version, "N/A", 3 * sizeof(char));
4e6759be
DANR		 3622 complete(&adapter->fw_done);
3623}
3624
032c5e82
TF		 3625static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
3626{
3627 struct device *dev = &adapter->vdev->dev;
3628 struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
3629 union ibmvnic_crq crq;
3630 int i;
3631
3632 dma_unmap_single(dev, adapter->ip_offload_tok,
3633 sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
3634
3635 netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
3636 for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
3637 netdev_dbg(adapter->netdev, "%016lx\n",
3638 ((unsigned long int *)(buf))[i]);
3639
3640 netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
3641 netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
3642 netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
3643 buf->tcp_ipv4_chksum);
3644 netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
3645 buf->tcp_ipv6_chksum);
3646 netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
3647 buf->udp_ipv4_chksum);
3648 netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
3649 buf->udp_ipv6_chksum);
3650 netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
3651 buf->large_tx_ipv4);
3652 netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
3653 buf->large_tx_ipv6);
3654 netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
3655 buf->large_rx_ipv4);
3656 netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
3657 buf->large_rx_ipv6);
3658 netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
3659 buf->max_ipv4_header_size);
3660 netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
3661 buf->max_ipv6_header_size);
3662 netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
3663 buf->max_tcp_header_size);
3664 netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
3665 buf->max_udp_header_size);
3666 netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
3667 buf->max_large_tx_size);
3668 netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
3669 buf->max_large_rx_size);
3670 netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
3671 buf->ipv6_extension_header);
3672 netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
3673 buf->tcp_pseudosum_req);
3674 netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
3675 buf->num_ipv6_ext_headers);
3676 netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
3677 buf->off_ipv6_ext_headers);
3678
3679 adapter->ip_offload_ctrl_tok =
3680 dma_map_single(dev, &adapter->ip_offload_ctrl,
3681 sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
3682
3683 if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
3684 dev_err(dev, "Couldn't map ip offload control buffer\n");
3685 return;
3686 }
3687
f6897943
TF		 3688 adapter->ip_offload_ctrl.len =
3689 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
032c5e82 3690 adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
f6897943
TF		 3691 adapter->ip_offload_ctrl.ipv4_chksum = buf->ipv4_chksum;
3692 adapter->ip_offload_ctrl.ipv6_chksum = buf->ipv6_chksum;
032c5e82
TF		 3693 adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
3694 adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
3695 adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
3696 adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
fdb06105
TF		 3697 adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4;
3698 adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6;
032c5e82 3699
fdb06105 3700 /* large_rx disabled for now, additional features needed */
032c5e82
TF		 3701 adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
3702 adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
3703
15482056 3704 adapter->netdev->features = NETIF_F_SG | NETIF_F_GSO;
032c5e82
TF		 3705
3706 if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
3707 adapter->netdev->features |= NETIF_F_IP_CSUM;
3708
3709 if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
3710 adapter->netdev->features |= NETIF_F_IPV6_CSUM;
3711
9be02cdf
TF		 3712 if ((adapter->netdev->features &
3713 (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
3714 adapter->netdev->features |= NETIF_F_RXCSUM;
3715
fdb06105
TF		 3716 if (buf->large_tx_ipv4)
3717 adapter->netdev->features |= NETIF_F_TSO;
3718 if (buf->large_tx_ipv6)
3719 adapter->netdev->features |= NETIF_F_TSO6;
3720
aa0bf851
TF		 3721 adapter->netdev->hw_features |= adapter->netdev->features;
3722
032c5e82
TF		 3723 memset(&crq, 0, sizeof(crq));
3724 crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
3725 crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
3726 crq.control_ip_offload.len =
3727 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
3728 crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
3729 ibmvnic_send_crq(adapter, &crq);
3730}
3731
3732static void handle_error_info_rsp(union ibmvnic_crq *crq,
3733 struct ibmvnic_adapter *adapter)
3734{
3735 struct device *dev = &adapter->vdev->dev;
96183182 3736 struct ibmvnic_error_buff *error_buff, *tmp;
032c5e82
TF		 3737 unsigned long flags;
3738 bool found = false;
3739 int i;
3740
3741 if (!crq->request_error_rsp.rc.code) {
3742 dev_info(dev, "Request Error Rsp returned with rc=%x\n",
3743 crq->request_error_rsp.rc.code);
3744 return;
3745 }
3746
3747 spin_lock_irqsave(&adapter->error_list_lock, flags);
96183182 3748 list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list)
032c5e82
TF		 3749 if (error_buff->error_id == crq->request_error_rsp.error_id) {
3750 found = true;
3751 list_del(&error_buff->list);
3752 break;
3753 }
3754 spin_unlock_irqrestore(&adapter->error_list_lock, flags);
3755
3756 if (!found) {
3757 dev_err(dev, "Couldn't find error id %x\n",
75224c93 3758 be32_to_cpu(crq->request_error_rsp.error_id));
032c5e82
TF		 3759 return;
3760 }
3761
3762 dev_err(dev, "Detailed info for error id %x:",
75224c93 3763 be32_to_cpu(crq->request_error_rsp.error_id));
032c5e82
TF		 3764
3765 for (i = 0; i < error_buff->len; i++) {
3766 pr_cont("%02x", (int)error_buff->buff[i]);
3767 if (i % 8 == 7)
3768 pr_cont(" ");
3769 }
3770 pr_cont("\n");
3771
3772 dma_unmap_single(dev, error_buff->dma, error_buff->len,
3773 DMA_FROM_DEVICE);
3774 kfree(error_buff->buff);
3775 kfree(error_buff);
3776}
3777
2f9de9ba
NF		 3778static void request_error_information(struct ibmvnic_adapter *adapter,
3779 union ibmvnic_crq *err_crq)
032c5e82 3780{
032c5e82 3781 struct device *dev = &adapter->vdev->dev;
2f9de9ba 3782 struct net_device *netdev = adapter->netdev;
032c5e82 3783 struct ibmvnic_error_buff *error_buff;
2f9de9ba
NF		 3784 unsigned long timeout = msecs_to_jiffies(30000);
3785 union ibmvnic_crq crq;
032c5e82 3786 unsigned long flags;
2f9de9ba 3787 int rc, detail_len;
032c5e82
TF		 3788
3789 error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC);
3790 if (!error_buff)
3791 return;
3792
2f9de9ba 3793 detail_len = be32_to_cpu(err_crq->error_indication.detail_error_sz);
032c5e82
TF		 3794 error_buff->buff = kmalloc(detail_len, GFP_ATOMIC);
3795 if (!error_buff->buff) {
3796 kfree(error_buff);
3797 return;
3798 }
3799
3800 error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len,
3801 DMA_FROM_DEVICE);
3802 if (dma_mapping_error(dev, error_buff->dma)) {
2f9de9ba 3803 netdev_err(netdev, "Couldn't map error buffer\n");
032c5e82
TF		 3804 kfree(error_buff->buff);
3805 kfree(error_buff);
3806 return;
3807 }
3808
032c5e82 3809 error_buff->len = detail_len;
2f9de9ba 3810 error_buff->error_id = err_crq->error_indication.error_id;
032c5e82
TF		 3811
3812 spin_lock_irqsave(&adapter->error_list_lock, flags);
3813 list_add_tail(&error_buff->list, &adapter->errors);
3814 spin_unlock_irqrestore(&adapter->error_list_lock, flags);
3815
2f9de9ba
NF		 3816 memset(&crq, 0, sizeof(crq));
3817 crq.request_error_info.first = IBMVNIC_CRQ_CMD;
3818 crq.request_error_info.cmd = REQUEST_ERROR_INFO;
3819 crq.request_error_info.ioba = cpu_to_be32(error_buff->dma);
3820 crq.request_error_info.len = cpu_to_be32(detail_len);
3821 crq.request_error_info.error_id = err_crq->error_indication.error_id;
3822
3823 rc = ibmvnic_send_crq(adapter, &crq);
3824 if (rc) {
3825 netdev_err(netdev, "failed to request error information\n");
3826 goto err_info_fail;
3827 }
3828
3829 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
3830 netdev_err(netdev, "timeout waiting for error information\n");
3831 goto err_info_fail;
3832 }
3833
3834 return;
3835
3836err_info_fail:
3837 spin_lock_irqsave(&adapter->error_list_lock, flags);
3838 list_del(&error_buff->list);
3839 spin_unlock_irqrestore(&adapter->error_list_lock, flags);
3840
3841 kfree(error_buff->buff);
3842 kfree(error_buff);
3843}
3844
3845static void handle_error_indication(union ibmvnic_crq *crq,
3846 struct ibmvnic_adapter *adapter)
3847{
3848 struct device *dev = &adapter->vdev->dev;
3849
3850 dev_err(dev, "Firmware reports %serror id %x, cause %d\n",
3851 crq->error_indication.flags
3852 & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
3853 be32_to_cpu(crq->error_indication.error_id),
3854 be16_to_cpu(crq->error_indication.error_cause));
3855
3856 if (be32_to_cpu(crq->error_indication.error_id))
3857 request_error_information(adapter, crq);
ed651a10
NF		 3858
3859 if (crq->error_indication.flags & IBMVNIC_FATAL_ERROR)
3860 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
8cb31cfc
JA		 3861 else
3862 ibmvnic_reset(adapter, VNIC_RESET_NON_FATAL);
032c5e82
TF		 3863}
3864
f813614f
TF		 3865static int handle_change_mac_rsp(union ibmvnic_crq *crq,
3866 struct ibmvnic_adapter *adapter)
032c5e82
TF		 3867{
3868 struct net_device *netdev = adapter->netdev;
3869 struct device *dev = &adapter->vdev->dev;
3870 long rc;
3871
3872 rc = crq->change_mac_addr_rsp.rc.code;
3873 if (rc) {
3874 dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
f813614f 3875 goto out;
032c5e82
TF		 3876 }
3877 memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0],
3878 ETH_ALEN);
f813614f
TF		 3879out:
3880 complete(&adapter->fw_done);
3881 return rc;
032c5e82
TF		 3882}
3883
3884static void handle_request_cap_rsp(union ibmvnic_crq *crq,
3885 struct ibmvnic_adapter *adapter)
3886{
3887 struct device *dev = &adapter->vdev->dev;
3888 u64 *req_value;
3889 char *name;
3890
901e040a 3891 atomic_dec(&adapter->running_cap_crqs);
032c5e82
TF		 3892 switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
3893 case REQ_TX_QUEUES:
3894 req_value = &adapter->req_tx_queues;
3895 name = "tx";
3896 break;
3897 case REQ_RX_QUEUES:
3898 req_value = &adapter->req_rx_queues;
3899 name = "rx";
3900 break;
3901 case REQ_RX_ADD_QUEUES:
3902 req_value = &adapter->req_rx_add_queues;
3903 name = "rx_add";
3904 break;
3905 case REQ_TX_ENTRIES_PER_SUBCRQ:
3906 req_value = &adapter->req_tx_entries_per_subcrq;
3907 name = "tx_entries_per_subcrq";
3908 break;
3909 case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
3910 req_value = &adapter->req_rx_add_entries_per_subcrq;
3911 name = "rx_add_entries_per_subcrq";
3912 break;
3913 case REQ_MTU:
3914 req_value = &adapter->req_mtu;
3915 name = "mtu";
3916 break;
3917 case PROMISC_REQUESTED:
3918 req_value = &adapter->promisc;
3919 name = "promisc";
3920 break;
3921 default:
3922 dev_err(dev, "Got invalid cap request rsp %d\n",
3923 crq->request_capability.capability);
3924 return;
3925 }
3926
3927 switch (crq->request_capability_rsp.rc.code) {
3928 case SUCCESS:
3929 break;
3930 case PARTIALSUCCESS:
3931 dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
3932 *req_value,
28f4d165 3933 (long int)be64_to_cpu(crq->request_capability_rsp.
032c5e82 3934 number), name);
e7913803
JA		 3935
3936 if (be16_to_cpu(crq->request_capability_rsp.capability) ==
3937 REQ_MTU) {
3938 pr_err("mtu of %llu is not supported. Reverting.\n",
3939 *req_value);
3940 *req_value = adapter->fallback.mtu;
3941 } else {
3942 *req_value =
3943 be64_to_cpu(crq->request_capability_rsp.number);
3944 }
3945
d346b9bc 3946 ibmvnic_send_req_caps(adapter, 1);
032c5e82
TF		 3947 return;
3948 default:
3949 dev_err(dev, "Error %d in request cap rsp\n",
3950 crq->request_capability_rsp.rc.code);
3951 return;
3952 }
3953
3954 /* Done receiving requested capabilities, query IP offload support */
901e040a 3955 if (atomic_read(&adapter->running_cap_crqs) == 0) {
032c5e82
TF		 3956 union ibmvnic_crq newcrq;
3957 int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
3958 struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
3959 &adapter->ip_offload_buf;
3960
249168ad 3961 adapter->wait_capability = false;
032c5e82
TF		 3962 adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
3963 buf_sz,
3964 DMA_FROM_DEVICE);
3965
3966 if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
3967 if (!firmware_has_feature(FW_FEATURE_CMO))
3968 dev_err(dev, "Couldn't map offload buffer\n");
3969 return;
3970 }
3971
3972 memset(&newcrq, 0, sizeof(newcrq));
3973 newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
3974 newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
3975 newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
3976 newcrq.query_ip_offload.ioba =
3977 cpu_to_be32(adapter->ip_offload_tok);
3978
3979 ibmvnic_send_crq(adapter, &newcrq);
3980 }
3981}
3982
3983static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
3984 struct ibmvnic_adapter *adapter)
3985{
3986 struct device *dev = &adapter->vdev->dev;
c26eba03 3987 struct net_device *netdev = adapter->netdev;
032c5e82
TF		 3988 struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
3989 struct ibmvnic_login_buffer *login = adapter->login_buf;
032c5e82
TF		 3990 int i;
3991
3992 dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
37e40fa8 3993 DMA_TO_DEVICE);
032c5e82 3994 dma_unmap_single(dev, adapter->login_rsp_buf_token,
37e40fa8 3995 adapter->login_rsp_buf_sz, DMA_FROM_DEVICE);
032c5e82 3996
498cd8e4
JA		 3997 /* If the number of queues requested can't be allocated by the
3998 * server, the login response will return with code 1. We will need
3999 * to resend the login buffer with fewer queues requested.
4000 */
4001 if (login_rsp_crq->generic.rc.code) {
64d92aa2 4002 adapter->init_done_rc = login_rsp_crq->generic.rc.code;
498cd8e4
JA		 4003 complete(&adapter->init_done);
4004 return 0;
4005 }
4006
c26eba03
JA		 4007 netdev->mtu = adapter->req_mtu - ETH_HLEN;
4008
032c5e82
TF		 4009 netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
4010 for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
4011 netdev_dbg(adapter->netdev, "%016lx\n",
4012 ((unsigned long int *)(adapter->login_rsp_buf))[i]);
4013 }
4014
4015 /* Sanity checks */
4016 if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
4017 (be32_to_cpu(login->num_rxcomp_subcrqs) *
4018 adapter->req_rx_add_queues !=
4019 be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
4020 dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
4021 ibmvnic_remove(adapter->vdev);
4022 return -EIO;
4023 }
a2c0f039 4024 release_login_buffer(adapter);
032c5e82
TF		 4025 complete(&adapter->init_done);
4026
032c5e82
TF		 4027 return 0;
4028}
4029
032c5e82
TF		 4030static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
4031 struct ibmvnic_adapter *adapter)
4032{
4033 struct device *dev = &adapter->vdev->dev;
4034 long rc;
4035
4036 rc = crq->request_unmap_rsp.rc.code;
4037 if (rc)
4038 dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
4039}
4040
4041static void handle_query_map_rsp(union ibmvnic_crq *crq,
4042 struct ibmvnic_adapter *adapter)
4043{
4044 struct net_device *netdev = adapter->netdev;
4045 struct device *dev = &adapter->vdev->dev;
4046 long rc;
4047
4048 rc = crq->query_map_rsp.rc.code;
4049 if (rc) {
4050 dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
4051 return;
4052 }
4053 netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
4054 crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
4055 crq->query_map_rsp.free_pages);
4056}
4057
4058static void handle_query_cap_rsp(union ibmvnic_crq *crq,
4059 struct ibmvnic_adapter *adapter)
4060{
4061 struct net_device *netdev = adapter->netdev;
4062 struct device *dev = &adapter->vdev->dev;
4063 long rc;
4064
901e040a 4065 atomic_dec(&adapter->running_cap_crqs);
032c5e82 4066 netdev_dbg(netdev, "Outstanding queries: %d\n",
901e040a 4067 atomic_read(&adapter->running_cap_crqs));
032c5e82
TF		 4068 rc = crq->query_capability.rc.code;
4069 if (rc) {
4070 dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
4071 goto out;
4072 }
4073
4074 switch (be16_to_cpu(crq->query_capability.capability)) {
4075 case MIN_TX_QUEUES:
4076 adapter->min_tx_queues =
de89e854 4077 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4078 netdev_dbg(netdev, "min_tx_queues = %lld\n",
4079 adapter->min_tx_queues);
4080 break;
4081 case MIN_RX_QUEUES:
4082 adapter->min_rx_queues =
de89e854 4083 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4084 netdev_dbg(netdev, "min_rx_queues = %lld\n",
4085 adapter->min_rx_queues);
4086 break;
4087 case MIN_RX_ADD_QUEUES:
4088 adapter->min_rx_add_queues =
de89e854 4089 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4090 netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
4091 adapter->min_rx_add_queues);
4092 break;
4093 case MAX_TX_QUEUES:
4094 adapter->max_tx_queues =
de89e854 4095 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4096 netdev_dbg(netdev, "max_tx_queues = %lld\n",
4097 adapter->max_tx_queues);
4098 break;
4099 case MAX_RX_QUEUES:
4100 adapter->max_rx_queues =
de89e854 4101 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4102 netdev_dbg(netdev, "max_rx_queues = %lld\n",
4103 adapter->max_rx_queues);
4104 break;
4105 case MAX_RX_ADD_QUEUES:
4106 adapter->max_rx_add_queues =
de89e854 4107 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4108 netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
4109 adapter->max_rx_add_queues);
4110 break;
4111 case MIN_TX_ENTRIES_PER_SUBCRQ:
4112 adapter->min_tx_entries_per_subcrq =
de89e854 4113 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4114 netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
4115 adapter->min_tx_entries_per_subcrq);
4116 break;
4117 case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
4118 adapter->min_rx_add_entries_per_subcrq =
de89e854 4119 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4120 netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
4121 adapter->min_rx_add_entries_per_subcrq);
4122 break;
4123 case MAX_TX_ENTRIES_PER_SUBCRQ:
4124 adapter->max_tx_entries_per_subcrq =
de89e854 4125 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4126 netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
4127 adapter->max_tx_entries_per_subcrq);
4128 break;
4129 case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
4130 adapter->max_rx_add_entries_per_subcrq =
de89e854 4131 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4132 netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
4133 adapter->max_rx_add_entries_per_subcrq);
4134 break;
4135 case TCP_IP_OFFLOAD:
4136 adapter->tcp_ip_offload =
de89e854 4137 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4138 netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
4139 adapter->tcp_ip_offload);
4140 break;
4141 case PROMISC_SUPPORTED:
4142 adapter->promisc_supported =
de89e854 4143 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4144 netdev_dbg(netdev, "promisc_supported = %lld\n",
4145 adapter->promisc_supported);
4146 break;
4147 case MIN_MTU:
de89e854 4148 adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
f39f0d1e 4149 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
032c5e82
TF		 4150 netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
4151 break;
4152 case MAX_MTU:
de89e854 4153 adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
f39f0d1e 4154 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
032c5e82
TF		 4155 netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
4156 break;
4157 case MAX_MULTICAST_FILTERS:
4158 adapter->max_multicast_filters =
de89e854 4159 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4160 netdev_dbg(netdev, "max_multicast_filters = %lld\n",
4161 adapter->max_multicast_filters);
4162 break;
4163 case VLAN_HEADER_INSERTION:
4164 adapter->vlan_header_insertion =
de89e854 4165 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4166 if (adapter->vlan_header_insertion)
4167 netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
4168 netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
4169 adapter->vlan_header_insertion);
4170 break;
6052d5e2
MFV		 4171 case RX_VLAN_HEADER_INSERTION:
4172 adapter->rx_vlan_header_insertion =
4173 be64_to_cpu(crq->query_capability.number);
4174 netdev_dbg(netdev, "rx_vlan_header_insertion = %lld\n",
4175 adapter->rx_vlan_header_insertion);
4176 break;
032c5e82
TF		 4177 case MAX_TX_SG_ENTRIES:
4178 adapter->max_tx_sg_entries =
de89e854 4179 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4180 netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
4181 adapter->max_tx_sg_entries);
4182 break;
4183 case RX_SG_SUPPORTED:
4184 adapter->rx_sg_supported =
de89e854 4185 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4186 netdev_dbg(netdev, "rx_sg_supported = %lld\n",
4187 adapter->rx_sg_supported);
4188 break;
4189 case OPT_TX_COMP_SUB_QUEUES:
4190 adapter->opt_tx_comp_sub_queues =
de89e854 4191 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4192 netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
4193 adapter->opt_tx_comp_sub_queues);
4194 break;
4195 case OPT_RX_COMP_QUEUES:
4196 adapter->opt_rx_comp_queues =
de89e854 4197 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4198 netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
4199 adapter->opt_rx_comp_queues);
4200 break;
4201 case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
4202 adapter->opt_rx_bufadd_q_per_rx_comp_q =
de89e854 4203 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4204 netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
4205 adapter->opt_rx_bufadd_q_per_rx_comp_q);
4206 break;
4207 case OPT_TX_ENTRIES_PER_SUBCRQ:
4208 adapter->opt_tx_entries_per_subcrq =
de89e854 4209 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4210 netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
4211 adapter->opt_tx_entries_per_subcrq);
4212 break;
4213 case OPT_RXBA_ENTRIES_PER_SUBCRQ:
4214 adapter->opt_rxba_entries_per_subcrq =
de89e854 4215 be64_to_cpu(crq->query_capability.number);
032c5e82
TF		 4216 netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
4217 adapter->opt_rxba_entries_per_subcrq);
4218 break;
4219 case TX_RX_DESC_REQ:
4220 adapter->tx_rx_desc_req = crq->query_capability.number;
4221 netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
4222 adapter->tx_rx_desc_req);
4223 break;
4224
4225 default:
4226 netdev_err(netdev, "Got invalid cap rsp %d\n",
4227 crq->query_capability.capability);
4228 }
4229
4230out:
249168ad
TF		 4231 if (atomic_read(&adapter->running_cap_crqs) == 0) {
4232 adapter->wait_capability = false;
d346b9bc 4233 ibmvnic_send_req_caps(adapter, 0);
249168ad 4234 }
032c5e82
TF		 4235}
4236
032c5e82
TF		 4237static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
4238 struct ibmvnic_adapter *adapter)
4239{
4240 struct ibmvnic_generic_crq *gen_crq = &crq->generic;
4241 struct net_device *netdev = adapter->netdev;
4242 struct device *dev = &adapter->vdev->dev;
993a82b0 4243 u64 *u64_crq = (u64 *)crq;
032c5e82
TF		 4244 long rc;
4245
4246 netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
993a82b0
MFV		 4247 (unsigned long int)cpu_to_be64(u64_crq[0]),
4248 (unsigned long int)cpu_to_be64(u64_crq[1]));
032c5e82
TF		 4249 switch (gen_crq->first) {
4250 case IBMVNIC_CRQ_INIT_RSP:
4251 switch (gen_crq->cmd) {
4252 case IBMVNIC_CRQ_INIT:
4253 dev_info(dev, "Partner initialized\n");
017892c1 4254 adapter->from_passive_init = true;
5a18e1e0 4255 adapter->failover_pending = false;
17c87058
TF		 4256 if (!completion_done(&adapter->init_done)) {
4257 complete(&adapter->init_done);
4258 adapter->init_done_rc = -EIO;
4259 }
5a18e1e0 4260 ibmvnic_reset(adapter, VNIC_RESET_FAILOVER);
032c5e82
TF		 4261 break;
4262 case IBMVNIC_CRQ_INIT_COMPLETE:
4263 dev_info(dev, "Partner initialization complete\n");
5153698e 4264 adapter->crq.active = true;
032c5e82
TF		 4265 send_version_xchg(adapter);
4266 break;
4267 default:
4268 dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
4269 }
4270 return;
4271 case IBMVNIC_CRQ_XPORT_EVENT:
ed651a10 4272 netif_carrier_off(netdev);
5153698e 4273 adapter->crq.active = false;
032c5e82 4274 if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
ed651a10
NF		 4275 dev_info(dev, "Migrated, re-enabling adapter\n");
4276 ibmvnic_reset(adapter, VNIC_RESET_MOBILITY);
dfad09a6
TF		 4277 } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) {
4278 dev_info(dev, "Backing device failover detected\n");
5a18e1e0 4279 adapter->failover_pending = true;
032c5e82
TF		 4280 } else {
4281 /* The adapter lost the connection */
4282 dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
4283 gen_crq->cmd);
ed651a10 4284 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
032c5e82
TF		 4285 }
4286 return;
4287 case IBMVNIC_CRQ_CMD_RSP:
4288 break;
4289 default:
4290 dev_err(dev, "Got an invalid msg type 0x%02x\n",
4291 gen_crq->first);
4292 return;
4293 }
4294
4295 switch (gen_crq->cmd) {
4296 case VERSION_EXCHANGE_RSP:
4297 rc = crq->version_exchange_rsp.rc.code;
4298 if (rc) {
4299 dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
4300 break;
4301 }
4302 dev_info(dev, "Partner protocol version is %d\n",
4303 crq->version_exchange_rsp.version);
4304 if (be16_to_cpu(crq->version_exchange_rsp.version) <
4305 ibmvnic_version)
4306 ibmvnic_version =
4307 be16_to_cpu(crq->version_exchange_rsp.version);
4308 send_cap_queries(adapter);
4309 break;
4310 case QUERY_CAPABILITY_RSP:
4311 handle_query_cap_rsp(crq, adapter);
4312 break;
4313 case QUERY_MAP_RSP:
4314 handle_query_map_rsp(crq, adapter);
4315 break;
4316 case REQUEST_MAP_RSP:
f3be0cbc
TF		 4317 adapter->fw_done_rc = crq->request_map_rsp.rc.code;
4318 complete(&adapter->fw_done);
032c5e82
TF		 4319 break;
4320 case REQUEST_UNMAP_RSP:
4321 handle_request_unmap_rsp(crq, adapter);
4322 break;
4323 case REQUEST_CAPABILITY_RSP:
4324 handle_request_cap_rsp(crq, adapter);
4325 break;
4326 case LOGIN_RSP:
4327 netdev_dbg(netdev, "Got Login Response\n");
4328 handle_login_rsp(crq, adapter);
4329 break;
4330 case LOGICAL_LINK_STATE_RSP:
53da09e9
NF		 4331 netdev_dbg(netdev,
4332 "Got Logical Link State Response, state: %d rc: %d\n",
4333 crq->logical_link_state_rsp.link_state,
4334 crq->logical_link_state_rsp.rc.code);
032c5e82
TF		 4335 adapter->logical_link_state =
4336 crq->logical_link_state_rsp.link_state;
53da09e9
NF		 4337 adapter->init_done_rc = crq->logical_link_state_rsp.rc.code;
4338 complete(&adapter->init_done);
032c5e82
TF		 4339 break;
4340 case LINK_STATE_INDICATION:
4341 netdev_dbg(netdev, "Got Logical Link State Indication\n");
4342 adapter->phys_link_state =
4343 crq->link_state_indication.phys_link_state;
4344 adapter->logical_link_state =
4345 crq->link_state_indication.logical_link_state;
4346 break;
4347 case CHANGE_MAC_ADDR_RSP:
4348 netdev_dbg(netdev, "Got MAC address change Response\n");
f813614f 4349 adapter->fw_done_rc = handle_change_mac_rsp(crq, adapter);
032c5e82
TF		 4350 break;
4351 case ERROR_INDICATION:
4352 netdev_dbg(netdev, "Got Error Indication\n");
4353 handle_error_indication(crq, adapter);
4354 break;
4355 case REQUEST_ERROR_RSP:
4356 netdev_dbg(netdev, "Got Error Detail Response\n");
4357 handle_error_info_rsp(crq, adapter);
4358 break;
4359 case REQUEST_STATISTICS_RSP:
4360 netdev_dbg(netdev, "Got Statistics Response\n");
4361 complete(&adapter->stats_done);
4362 break;
032c5e82
TF		 4363 case QUERY_IP_OFFLOAD_RSP:
4364 netdev_dbg(netdev, "Got Query IP offload Response\n");
4365 handle_query_ip_offload_rsp(adapter);
4366 break;
4367 case MULTICAST_CTRL_RSP:
4368 netdev_dbg(netdev, "Got multicast control Response\n");
4369 break;
4370 case CONTROL_IP_OFFLOAD_RSP:
4371 netdev_dbg(netdev, "Got Control IP offload Response\n");
4372 dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
4373 sizeof(adapter->ip_offload_ctrl),
4374 DMA_TO_DEVICE);
bd0b6723 4375 complete(&adapter->init_done);
032c5e82 4376 break;
032c5e82
TF		 4377 case COLLECT_FW_TRACE_RSP:
4378 netdev_dbg(netdev, "Got Collect firmware trace Response\n");
4379 complete(&adapter->fw_done);
4380 break;
4e6759be
DANR		 4381 case GET_VPD_SIZE_RSP:
4382 handle_vpd_size_rsp(crq, adapter);
4383 break;
4384 case GET_VPD_RSP:
4385 handle_vpd_rsp(crq, adapter);
4386 break;
032c5e82
TF		 4387 default:
4388 netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
4389 gen_crq->cmd);
4390 }
4391}
4392
4393static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
4394{
4395 struct ibmvnic_adapter *adapter = instance;
6c267b3d 4396
6c267b3d 4397 tasklet_schedule(&adapter->tasklet);
6c267b3d
TF		 4398 return IRQ_HANDLED;
4399}
4400
4401static void ibmvnic_tasklet(void *data)
4402{
4403 struct ibmvnic_adapter *adapter = data;
032c5e82 4404 struct ibmvnic_crq_queue *queue = &adapter->crq;
032c5e82
TF		 4405 union ibmvnic_crq *crq;
4406 unsigned long flags;
4407 bool done = false;
4408
4409 spin_lock_irqsave(&queue->lock, flags);
032c5e82
TF		 4410 while (!done) {
4411 /* Pull all the valid messages off the CRQ */
4412 while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
4413 ibmvnic_handle_crq(crq, adapter);
4414 crq->generic.first = 0;
4415 }
ed7ecbf7
BK		 4416
4417 /* remain in tasklet until all
4418 * capabilities responses are received
4419 */
4420 if (!adapter->wait_capability)
4421 done = true;
032c5e82 4422 }
249168ad
TF		 4423 /* if capabilities CRQ's were sent in this tasklet, the following
4424 * tasklet must wait until all responses are received
4425 */
4426 if (atomic_read(&adapter->running_cap_crqs) != 0)
4427 adapter->wait_capability = true;
032c5e82 4428 spin_unlock_irqrestore(&queue->lock, flags);
032c5e82
TF		 4429}
4430
4431static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
4432{
4433 struct vio_dev *vdev = adapter->vdev;
4434 int rc;
4435
4436 do {
4437 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
4438 } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
4439
4440 if (rc)
4441 dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
4442
4443 return rc;
4444}
4445
4446static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
4447{
4448 struct ibmvnic_crq_queue *crq = &adapter->crq;
4449 struct device *dev = &adapter->vdev->dev;
4450 struct vio_dev *vdev = adapter->vdev;
4451 int rc;
4452
4453 /* Close the CRQ */
4454 do {
4455 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4456 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4457
4458 /* Clean out the queue */
4459 memset(crq->msgs, 0, PAGE_SIZE);
4460 crq->cur = 0;
5153698e 4461 crq->active = false;
032c5e82
TF		 4462
4463 /* And re-open it again */
4464 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
4465 crq->msg_token, PAGE_SIZE);
4466
4467 if (rc == H_CLOSED)
4468 /* Adapter is good, but other end is not ready */
4469 dev_warn(dev, "Partner adapter not ready\n");
4470 else if (rc != 0)
4471 dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
4472
4473 return rc;
4474}
4475
f992887c 4476static void release_crq_queue(struct ibmvnic_adapter *adapter)
032c5e82
TF		 4477{
4478 struct ibmvnic_crq_queue *crq = &adapter->crq;
4479 struct vio_dev *vdev = adapter->vdev;
4480 long rc;
4481
f992887c
NF		 4482 if (!crq->msgs)
4483 return;
4484
032c5e82
TF		 4485 netdev_dbg(adapter->netdev, "Releasing CRQ\n");
4486 free_irq(vdev->irq, adapter);
6c267b3d 4487 tasklet_kill(&adapter->tasklet);
032c5e82
TF		 4488 do {
4489 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4490 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4491
4492 dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
4493 DMA_BIDIRECTIONAL);
4494 free_page((unsigned long)crq->msgs);
f992887c 4495 crq->msgs = NULL;
5153698e 4496 crq->active = false;
032c5e82
TF		 4497}
4498
f992887c 4499static int init_crq_queue(struct ibmvnic_adapter *adapter)
032c5e82
TF		 4500{
4501 struct ibmvnic_crq_queue *crq = &adapter->crq;
4502 struct device *dev = &adapter->vdev->dev;
4503 struct vio_dev *vdev = adapter->vdev;
4504 int rc, retrc = -ENOMEM;
4505
f992887c
NF		 4506 if (crq->msgs)
4507 return 0;
4508
032c5e82
TF		 4509 crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
4510 /* Should we allocate more than one page? */
4511
4512 if (!crq->msgs)
4513 return -ENOMEM;
4514
4515 crq->size = PAGE_SIZE / sizeof(*crq->msgs);
4516 crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
4517 DMA_BIDIRECTIONAL);
4518 if (dma_mapping_error(dev, crq->msg_token))
4519 goto map_failed;
4520
4521 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
4522 crq->msg_token, PAGE_SIZE);
4523
4524 if (rc == H_RESOURCE)
4525 /* maybe kexecing and resource is busy. try a reset */
4526 rc = ibmvnic_reset_crq(adapter);
4527 retrc = rc;
4528
4529 if (rc == H_CLOSED) {
4530 dev_warn(dev, "Partner adapter not ready\n");
4531 } else if (rc) {
4532 dev_warn(dev, "Error %d opening adapter\n", rc);
4533 goto reg_crq_failed;
4534 }
4535
4536 retrc = 0;
4537
6c267b3d
TF		 4538 tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet,
4539 (unsigned long)adapter);
4540
032c5e82
TF		 4541 netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
4542 rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME,
4543 adapter);
4544 if (rc) {
4545 dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
4546 vdev->irq, rc);
4547 goto req_irq_failed;
4548 }
4549
4550 rc = vio_enable_interrupts(vdev);
4551 if (rc) {
4552 dev_err(dev, "Error %d enabling interrupts\n", rc);
4553 goto req_irq_failed;
4554 }
4555
4556 crq->cur = 0;
4557 spin_lock_init(&crq->lock);
4558
4559 return retrc;
4560
4561req_irq_failed:
6c267b3d 4562 tasklet_kill(&adapter->tasklet);
032c5e82
TF		 4563 do {
4564 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4565 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4566reg_crq_failed:
4567 dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
4568map_failed:
4569 free_page((unsigned long)crq->msgs);
f992887c 4570 crq->msgs = NULL;
032c5e82
TF		 4571 return retrc;
4572}
4573
f6ef6408 4574static int ibmvnic_init(struct ibmvnic_adapter *adapter)
032c5e82 4575{
f6ef6408 4576 struct device *dev = &adapter->vdev->dev;
ea22d51a 4577 unsigned long timeout = msecs_to_jiffies(30000);
d7c0ef36 4578 u64 old_num_rx_queues, old_num_tx_queues;
f6ef6408
JA		 4579 int rc;
4580
017892c1
JA		 4581 adapter->from_passive_init = false;
4582
d7c0ef36
NF		 4583 old_num_rx_queues = adapter->req_rx_queues;
4584 old_num_tx_queues = adapter->req_tx_queues;
4585
f6ef6408 4586 init_completion(&adapter->init_done);
6a2fb0e9 4587 adapter->init_done_rc = 0;
f6ef6408
JA		 4588 ibmvnic_send_crq_init(adapter);
4589 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
4590 dev_err(dev, "Initialization sequence timed out\n");
017892c1
JA		 4591 return -1;
4592 }
4593
6a2fb0e9
NF		 4594 if (adapter->init_done_rc) {
4595 release_crq_queue(adapter);
4596 return adapter->init_done_rc;
4597 }
4598
017892c1
JA		 4599 if (adapter->from_passive_init) {
4600 adapter->state = VNIC_OPEN;
4601 adapter->from_passive_init = false;
f6ef6408
JA		 4602 return -1;
4603 }
4604
30f79625
NF		 4605 if (adapter->resetting && !adapter->wait_for_reset &&
4606 adapter->reset_reason != VNIC_RESET_MOBILITY) {
d7c0ef36
NF		 4607 if (adapter->req_rx_queues != old_num_rx_queues ||
4608 adapter->req_tx_queues != old_num_tx_queues) {
4609 release_sub_crqs(adapter, 0);
4610 rc = init_sub_crqs(adapter);
4611 } else {
4612 rc = reset_sub_crq_queues(adapter);
4613 }
4614 } else {
57a49436 4615 rc = init_sub_crqs(adapter);
d7c0ef36
NF		 4616 }
4617
1bb3c739
NF		 4618 if (rc) {
4619 dev_err(dev, "Initialization of sub crqs failed\n");
4620 release_crq_queue(adapter);
5df969c3
TF		 4621 return rc;
4622 }
4623
4624 rc = init_sub_crq_irqs(adapter);
4625 if (rc) {
4626 dev_err(dev, "Failed to initialize sub crq irqs\n");
4627 release_crq_queue(adapter);
1bb3c739
NF		 4628 }
4629
4630 return rc;
f6ef6408
JA		 4631}
4632
40c9db8a
TF		 4633static struct device_attribute dev_attr_failover;
4634
f6ef6408
JA		 4635static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
4636{
032c5e82
TF		 4637 struct ibmvnic_adapter *adapter;
4638 struct net_device *netdev;
4639 unsigned char *mac_addr_p;
032c5e82
TF		 4640 int rc;
4641
4642 dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
4643 dev->unit_address);
4644
4645 mac_addr_p = (unsigned char *)vio_get_attribute(dev,
4646 VETH_MAC_ADDR, NULL);
4647 if (!mac_addr_p) {
4648 dev_err(&dev->dev,
4649 "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
4650 __FILE__, __LINE__);
4651 return 0;
4652 }
4653
4654 netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
d45cc3a4 4655 IBMVNIC_MAX_QUEUES);
032c5e82
TF		 4656 if (!netdev)
4657 return -ENOMEM;
4658
4659 adapter = netdev_priv(netdev);
90c8014c 4660 adapter->state = VNIC_PROBING;
032c5e82
TF		 4661 dev_set_drvdata(&dev->dev, netdev);
4662 adapter->vdev = dev;
4663 adapter->netdev = netdev;
4664
4665 ether_addr_copy(adapter->mac_addr, mac_addr_p);
4666 ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
4667 netdev->irq = dev->irq;
4668 netdev->netdev_ops = &ibmvnic_netdev_ops;
4669 netdev->ethtool_ops = &ibmvnic_ethtool_ops;
4670 SET_NETDEV_DEV(netdev, &dev->dev);
4671
4672 spin_lock_init(&adapter->stats_lock);
4673
032c5e82 4674 INIT_LIST_HEAD(&adapter->errors);
032c5e82 4675 spin_lock_init(&adapter->error_list_lock);
032c5e82 4676
ed651a10
NF		 4677 INIT_WORK(&adapter->ibmvnic_reset, __ibmvnic_reset);
4678 INIT_LIST_HEAD(&adapter->rwi_list);
4679 mutex_init(&adapter->reset_lock);
4680 mutex_init(&adapter->rwi_lock);
4681 adapter->resetting = false;
4682
c26eba03
JA		 4683 adapter->mac_change_pending = false;
4684
6a2fb0e9 4685 do {
30f79625
NF		 4686 rc = init_crq_queue(adapter);
4687 if (rc) {
4688 dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n",
4689 rc);
4690 goto ibmvnic_init_fail;
4691 }
4692
6a2fb0e9 4693 rc = ibmvnic_init(adapter);
7c1885ae
NF		 4694 if (rc && rc != EAGAIN)
4695 goto ibmvnic_init_fail;
6a2fb0e9 4696 } while (rc == EAGAIN);
032c5e82 4697
07184213
TF		 4698 rc = init_stats_buffers(adapter);
4699 if (rc)
4700 goto ibmvnic_init_fail;
4701
4702 rc = init_stats_token(adapter);
4703 if (rc)
4704 goto ibmvnic_stats_fail;
4705
f39f0d1e 4706 netdev->mtu = adapter->req_mtu - ETH_HLEN;
c26eba03
JA		 4707 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
4708 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
032c5e82 4709
40c9db8a 4710 rc = device_create_file(&dev->dev, &dev_attr_failover);
7c1885ae 4711 if (rc)
07184213 4712 goto ibmvnic_dev_file_err;
40c9db8a 4713
e876a8a7 4714 netif_carrier_off(netdev);
032c5e82
TF		 4715 rc = register_netdev(netdev);
4716 if (rc) {
4717 dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
7c1885ae 4718 goto ibmvnic_register_fail;
032c5e82
TF		 4719 }
4720 dev_info(&dev->dev, "ibmvnic registered\n");
4721
90c8014c 4722 adapter->state = VNIC_PROBED;
c26eba03
JA		 4723
4724 adapter->wait_for_reset = false;
4725
032c5e82 4726 return 0;
7c1885ae
NF		 4727
4728ibmvnic_register_fail:
4729 device_remove_file(&dev->dev, &dev_attr_failover);
4730
07184213
TF		 4731ibmvnic_dev_file_err:
4732 release_stats_token(adapter);
4733
4734ibmvnic_stats_fail:
4735 release_stats_buffers(adapter);
4736
7c1885ae 4737ibmvnic_init_fail:
d7c0ef36 4738 release_sub_crqs(adapter, 1);
7c1885ae
NF		 4739 release_crq_queue(adapter);
4740 free_netdev(netdev);
4741
4742 return rc;
032c5e82
TF		 4743}
4744
4745static int ibmvnic_remove(struct vio_dev *dev)
4746{
4747 struct net_device *netdev = dev_get_drvdata(&dev->dev);
37489055 4748 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
032c5e82 4749
90c8014c 4750 adapter->state = VNIC_REMOVING;
032c5e82 4751 unregister_netdev(netdev);
ed651a10 4752 mutex_lock(&adapter->reset_lock);
37489055
NF		 4753
4754 release_resources(adapter);
d7c0ef36 4755 release_sub_crqs(adapter, 1);
37489055
NF		 4756 release_crq_queue(adapter);
4757
53cc7721
TF		 4758 release_stats_token(adapter);
4759 release_stats_buffers(adapter);
4760
90c8014c
NF		 4761 adapter->state = VNIC_REMOVED;
4762
ed651a10 4763 mutex_unlock(&adapter->reset_lock);
40c9db8a 4764 device_remove_file(&dev->dev, &dev_attr_failover);
032c5e82
TF		 4765 free_netdev(netdev);
4766 dev_set_drvdata(&dev->dev, NULL);
4767
4768 return 0;
4769}
4770
40c9db8a
TF		 4771static ssize_t failover_store(struct device *dev, struct device_attribute *attr,
4772 const char *buf, size_t count)
4773{
4774 struct net_device *netdev = dev_get_drvdata(dev);
4775 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
4776 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
4777 __be64 session_token;
4778 long rc;
4779
4780 if (!sysfs_streq(buf, "1"))
4781 return -EINVAL;
4782
4783 rc = plpar_hcall(H_VIOCTL, retbuf, adapter->vdev->unit_address,
4784 H_GET_SESSION_TOKEN, 0, 0, 0);
4785 if (rc) {
4786 netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n",
4787 rc);
4788 return -EINVAL;
4789 }
4790
4791 session_token = (__be64)retbuf[0];
4792 netdev_dbg(netdev, "Initiating client failover, session id %llx\n",
4793 be64_to_cpu(session_token));
4794 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
4795 H_SESSION_ERR_DETECTED, session_token, 0, 0);
4796 if (rc) {
4797 netdev_err(netdev, "Client initiated failover failed, rc %ld\n",
4798 rc);
4799 return -EINVAL;
4800 }
4801
4802 return count;
4803}
4804
6cbaefb4 4805static DEVICE_ATTR_WO(failover);
40c9db8a 4806
032c5e82
TF		 4807static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
4808{
4809 struct net_device *netdev = dev_get_drvdata(&vdev->dev);
4810 struct ibmvnic_adapter *adapter;
4811 struct iommu_table *tbl;
4812 unsigned long ret = 0;
4813 int i;
4814
4815 tbl = get_iommu_table_base(&vdev->dev);
4816
4817 /* netdev inits at probe time along with the structures we need below*/
4818 if (!netdev)
4819 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
4820
4821 adapter = netdev_priv(netdev);
4822
4823 ret += PAGE_SIZE; /* the crq message queue */
032c5e82
TF		 4824 ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
4825
4826 for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
4827 ret += 4 * PAGE_SIZE; /* the scrq message queue */
4828
4829 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
4830 i++)
4831 ret += adapter->rx_pool[i].size *
4832 IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
4833
4834 return ret;
4835}
4836
4837static int ibmvnic_resume(struct device *dev)
4838{
4839 struct net_device *netdev = dev_get_drvdata(dev);
4840 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
032c5e82 4841
cb89ba24
JA		 4842 if (adapter->state != VNIC_OPEN)
4843 return 0;
4844
a248878d 4845 tasklet_schedule(&adapter->tasklet);
032c5e82
TF		 4846
4847 return 0;
4848}
4849
8c37bc67 4850static const struct vio_device_id ibmvnic_device_table[] = {
032c5e82
TF		 4851 {"network", "IBM,vnic"},
4852 {"", "" }
4853};
4854MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
4855
4856static const struct dev_pm_ops ibmvnic_pm_ops = {
4857 .resume = ibmvnic_resume
4858};
4859
4860static struct vio_driver ibmvnic_driver = {
4861 .id_table = ibmvnic_device_table,
4862 .probe = ibmvnic_probe,
4863 .remove = ibmvnic_remove,
4864 .get_desired_dma = ibmvnic_get_desired_dma,
4865 .name = ibmvnic_driver_name,
4866 .pm = &ibmvnic_pm_ops,
4867};
4868
4869/* module functions */
4870static int __init ibmvnic_module_init(void)
4871{
4872 pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
4873 IBMVNIC_DRIVER_VERSION);
4874
4875 return vio_register_driver(&ibmvnic_driver);
4876}
4877
4878static void __exit ibmvnic_module_exit(void)
4879{
4880 vio_unregister_driver(&ibmvnic_driver);
4881}
4882
4883module_init(ibmvnic_module_init);
4884module_exit(ibmvnic_module_exit);
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