1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * QLogic iSCSI Offload Driver |
4 | * Copyright (c) 2016 Cavium Inc. |
5 | */ |
6 | |
7 | #include <linux/module.h> |
8 | #include <linux/pci.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/if_arp.h> |
11 | #include <scsi/iscsi_if.h> |
12 | #include <linux/inet.h> |
13 | #include <net/arp.h> |
14 | #include <linux/list.h> |
15 | #include <linux/kthread.h> |
16 | #include <linux/mm.h> |
17 | #include <linux/if_vlan.h> |
18 | #include <linux/cpu.h> |
19 | #include <linux/iscsi_boot_sysfs.h> |
20 | |
21 | #include <scsi/scsi_cmnd.h> |
22 | #include <scsi/scsi_device.h> |
23 | #include <scsi/scsi_eh.h> |
24 | #include <scsi/scsi_host.h> |
25 | #include <scsi/scsi.h> |
26 | |
27 | #include "qedi.h" |
28 | #include "qedi_gbl.h" |
29 | #include "qedi_iscsi.h" |
30 | |
31 | static uint qedi_qed_debug; |
32 | module_param(qedi_qed_debug, uint, 0644); |
33 | MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)" ); |
34 | |
35 | static uint qedi_fw_debug; |
36 | module_param(qedi_fw_debug, uint, 0644); |
37 | MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3" ); |
38 | |
39 | uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; |
40 | module_param(qedi_dbg_log, uint, 0644); |
41 | MODULE_PARM_DESC(qedi_dbg_log, " Default debug level" ); |
42 | |
43 | uint qedi_io_tracing; |
44 | module_param(qedi_io_tracing, uint, 0644); |
45 | MODULE_PARM_DESC(qedi_io_tracing, |
46 | " Enable logging of SCSI requests/completions into trace buffer. (default off)." ); |
47 | |
48 | static uint qedi_ll2_buf_size = 0x400; |
49 | module_param(qedi_ll2_buf_size, uint, 0644); |
50 | MODULE_PARM_DESC(qedi_ll2_buf_size, |
51 | "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400." ); |
52 | |
53 | static uint qedi_flags_override; |
54 | module_param(qedi_flags_override, uint, 0644); |
55 | MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action." ); |
56 | |
57 | const struct qed_iscsi_ops *qedi_ops; |
58 | static struct scsi_transport_template *qedi_scsi_transport; |
59 | static struct pci_driver qedi_pci_driver; |
60 | static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); |
61 | static LIST_HEAD(qedi_udev_list); |
62 | /* Static function declaration */ |
63 | static int qedi_alloc_global_queues(struct qedi_ctx *qedi); |
64 | static void qedi_free_global_queues(struct qedi_ctx *qedi); |
65 | static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); |
66 | static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); |
67 | static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); |
68 | static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); |
69 | static void qedi_recovery_handler(struct work_struct *work); |
70 | static void qedi_schedule_hw_err_handler(void *dev, |
71 | enum qed_hw_err_type err_type); |
72 | static int qedi_suspend(struct pci_dev *pdev, pm_message_t state); |
73 | |
74 | static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) |
75 | { |
76 | struct qedi_ctx *qedi; |
77 | struct qedi_endpoint *qedi_ep; |
78 | struct iscsi_eqe_data *data; |
79 | int rval = 0; |
80 | |
81 | if (!context || !fw_handle) { |
82 | QEDI_ERR(NULL, "Recv event with ctx NULL\n" ); |
83 | return -EINVAL; |
84 | } |
85 | |
86 | qedi = (struct qedi_ctx *)context; |
87 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
88 | "Recv Event %d fw_handle %p\n" , fw_event_code, fw_handle); |
89 | |
90 | data = (struct iscsi_eqe_data *)fw_handle; |
91 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
92 | "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n" , |
93 | data->icid, data->conn_id, data->error_code, |
94 | data->error_pdu_opcode_reserved); |
95 | |
96 | qedi_ep = qedi->ep_tbl[data->icid]; |
97 | |
98 | if (!qedi_ep) { |
99 | QEDI_WARN(&qedi->dbg_ctx, |
100 | "Cannot process event, ep already disconnected, cid=0x%x\n" , |
101 | data->icid); |
102 | WARN_ON(1); |
103 | return -ENODEV; |
104 | } |
105 | |
106 | switch (fw_event_code) { |
107 | case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: |
108 | if (qedi_ep->state == EP_STATE_OFLDCONN_START) |
109 | qedi_ep->state = EP_STATE_OFLDCONN_COMPL; |
110 | |
111 | wake_up_interruptible(&qedi_ep->tcp_ofld_wait); |
112 | break; |
113 | case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: |
114 | qedi_ep->state = EP_STATE_DISCONN_COMPL; |
115 | wake_up_interruptible(&qedi_ep->tcp_ofld_wait); |
116 | break; |
117 | case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: |
118 | qedi_process_iscsi_error(ep: qedi_ep, data); |
119 | break; |
120 | case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: |
121 | case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: |
122 | case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: |
123 | case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: |
124 | case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: |
125 | case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: |
126 | case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: |
127 | qedi_process_tcp_error(ep: qedi_ep, data); |
128 | break; |
129 | default: |
130 | QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n" , |
131 | fw_event_code); |
132 | } |
133 | |
134 | return rval; |
135 | } |
136 | |
137 | static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) |
138 | { |
139 | struct qedi_uio_dev *udev = uinfo->priv; |
140 | struct qedi_ctx *qedi = udev->qedi; |
141 | |
142 | if (!capable(CAP_NET_ADMIN)) |
143 | return -EPERM; |
144 | |
145 | if (udev->uio_dev != -1) |
146 | return -EBUSY; |
147 | |
148 | rtnl_lock(); |
149 | udev->uio_dev = iminor(inode); |
150 | qedi_reset_uio_rings(udev); |
151 | set_bit(UIO_DEV_OPENED, addr: &qedi->flags); |
152 | rtnl_unlock(); |
153 | |
154 | return 0; |
155 | } |
156 | |
157 | static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) |
158 | { |
159 | struct qedi_uio_dev *udev = uinfo->priv; |
160 | struct qedi_ctx *qedi = udev->qedi; |
161 | |
162 | udev->uio_dev = -1; |
163 | clear_bit(UIO_DEV_OPENED, addr: &qedi->flags); |
164 | qedi_ll2_free_skbs(qedi); |
165 | return 0; |
166 | } |
167 | |
168 | static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) |
169 | { |
170 | if (udev->uctrl) { |
171 | free_page((unsigned long)udev->uctrl); |
172 | udev->uctrl = NULL; |
173 | } |
174 | |
175 | if (udev->ll2_ring) { |
176 | free_page((unsigned long)udev->ll2_ring); |
177 | udev->ll2_ring = NULL; |
178 | } |
179 | |
180 | if (udev->ll2_buf) { |
181 | free_pages(addr: (unsigned long)udev->ll2_buf, order: 2); |
182 | udev->ll2_buf = NULL; |
183 | } |
184 | } |
185 | |
186 | static void __qedi_free_uio(struct qedi_uio_dev *udev) |
187 | { |
188 | uio_unregister_device(info: &udev->qedi_uinfo); |
189 | |
190 | __qedi_free_uio_rings(udev); |
191 | |
192 | pci_dev_put(dev: udev->pdev); |
193 | kfree(objp: udev); |
194 | } |
195 | |
196 | static void qedi_free_uio(struct qedi_uio_dev *udev) |
197 | { |
198 | if (!udev) |
199 | return; |
200 | |
201 | list_del_init(entry: &udev->list); |
202 | __qedi_free_uio(udev); |
203 | } |
204 | |
205 | static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) |
206 | { |
207 | struct qedi_ctx *qedi = NULL; |
208 | struct qedi_uio_ctrl *uctrl = NULL; |
209 | |
210 | qedi = udev->qedi; |
211 | uctrl = udev->uctrl; |
212 | |
213 | spin_lock_bh(lock: &qedi->ll2_lock); |
214 | uctrl->host_rx_cons = 0; |
215 | uctrl->hw_rx_prod = 0; |
216 | uctrl->hw_rx_bd_prod = 0; |
217 | uctrl->host_rx_bd_cons = 0; |
218 | |
219 | memset(udev->ll2_ring, 0, udev->ll2_ring_size); |
220 | memset(udev->ll2_buf, 0, udev->ll2_buf_size); |
221 | spin_unlock_bh(lock: &qedi->ll2_lock); |
222 | } |
223 | |
224 | static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) |
225 | { |
226 | int rc = 0; |
227 | |
228 | if (udev->ll2_ring || udev->ll2_buf) |
229 | return rc; |
230 | |
231 | /* Memory for control area. */ |
232 | udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); |
233 | if (!udev->uctrl) |
234 | return -ENOMEM; |
235 | |
236 | /* Allocating memory for LL2 ring */ |
237 | udev->ll2_ring_size = QEDI_PAGE_SIZE; |
238 | udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); |
239 | if (!udev->ll2_ring) { |
240 | rc = -ENOMEM; |
241 | goto exit_alloc_ring; |
242 | } |
243 | |
244 | /* Allocating memory for Tx/Rx pkt buffer */ |
245 | udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; |
246 | udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); |
247 | udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | |
248 | __GFP_ZERO, order: 2); |
249 | if (!udev->ll2_buf) { |
250 | rc = -ENOMEM; |
251 | goto exit_alloc_buf; |
252 | } |
253 | return rc; |
254 | |
255 | exit_alloc_buf: |
256 | free_page((unsigned long)udev->ll2_ring); |
257 | udev->ll2_ring = NULL; |
258 | exit_alloc_ring: |
259 | return rc; |
260 | } |
261 | |
262 | static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) |
263 | { |
264 | struct qedi_uio_dev *udev = NULL; |
265 | int rc = 0; |
266 | |
267 | list_for_each_entry(udev, &qedi_udev_list, list) { |
268 | if (udev->pdev == qedi->pdev) { |
269 | udev->qedi = qedi; |
270 | if (__qedi_alloc_uio_rings(udev)) { |
271 | udev->qedi = NULL; |
272 | return -ENOMEM; |
273 | } |
274 | qedi->udev = udev; |
275 | return 0; |
276 | } |
277 | } |
278 | |
279 | udev = kzalloc(size: sizeof(*udev), GFP_KERNEL); |
280 | if (!udev) |
281 | goto err_udev; |
282 | |
283 | udev->uio_dev = -1; |
284 | |
285 | udev->qedi = qedi; |
286 | udev->pdev = qedi->pdev; |
287 | |
288 | rc = __qedi_alloc_uio_rings(udev); |
289 | if (rc) |
290 | goto err_uctrl; |
291 | |
292 | list_add(new: &udev->list, head: &qedi_udev_list); |
293 | |
294 | pci_dev_get(dev: udev->pdev); |
295 | qedi->udev = udev; |
296 | |
297 | udev->tx_pkt = udev->ll2_buf; |
298 | udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; |
299 | return 0; |
300 | |
301 | err_uctrl: |
302 | kfree(objp: udev); |
303 | err_udev: |
304 | return -ENOMEM; |
305 | } |
306 | |
307 | static int qedi_init_uio(struct qedi_ctx *qedi) |
308 | { |
309 | struct qedi_uio_dev *udev = qedi->udev; |
310 | struct uio_info *uinfo; |
311 | int ret = 0; |
312 | |
313 | if (!udev) |
314 | return -ENOMEM; |
315 | |
316 | uinfo = &udev->qedi_uinfo; |
317 | |
318 | uinfo->mem[0].addr = (unsigned long)udev->uctrl; |
319 | uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); |
320 | uinfo->mem[0].memtype = UIO_MEM_LOGICAL; |
321 | |
322 | uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; |
323 | uinfo->mem[1].size = udev->ll2_ring_size; |
324 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; |
325 | |
326 | uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; |
327 | uinfo->mem[2].size = udev->ll2_buf_size; |
328 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; |
329 | |
330 | uinfo->name = "qedi_uio" ; |
331 | uinfo->version = QEDI_MODULE_VERSION; |
332 | uinfo->irq = UIO_IRQ_CUSTOM; |
333 | |
334 | uinfo->open = qedi_uio_open; |
335 | uinfo->release = qedi_uio_close; |
336 | |
337 | if (udev->uio_dev == -1) { |
338 | if (!uinfo->priv) { |
339 | uinfo->priv = udev; |
340 | |
341 | ret = uio_register_device(&udev->pdev->dev, uinfo); |
342 | if (ret) { |
343 | QEDI_ERR(&qedi->dbg_ctx, |
344 | "UIO registration failed\n" ); |
345 | } |
346 | } |
347 | } |
348 | |
349 | return ret; |
350 | } |
351 | |
352 | static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, |
353 | struct qed_sb_info *sb_info, u16 sb_id) |
354 | { |
355 | struct status_block *sb_virt; |
356 | dma_addr_t sb_phys; |
357 | int ret; |
358 | |
359 | sb_virt = dma_alloc_coherent(dev: &qedi->pdev->dev, |
360 | size: sizeof(struct status_block), dma_handle: &sb_phys, |
361 | GFP_KERNEL); |
362 | if (!sb_virt) { |
363 | QEDI_ERR(&qedi->dbg_ctx, |
364 | "Status block allocation failed for id = %d.\n" , |
365 | sb_id); |
366 | return -ENOMEM; |
367 | } |
368 | |
369 | ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, |
370 | sb_id, QED_SB_TYPE_STORAGE); |
371 | if (ret) { |
372 | QEDI_ERR(&qedi->dbg_ctx, |
373 | "Status block initialization failed for id = %d.\n" , |
374 | sb_id); |
375 | return ret; |
376 | } |
377 | |
378 | return 0; |
379 | } |
380 | |
381 | static void qedi_free_sb(struct qedi_ctx *qedi) |
382 | { |
383 | struct qed_sb_info *sb_info; |
384 | int id; |
385 | |
386 | for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { |
387 | sb_info = &qedi->sb_array[id]; |
388 | if (sb_info->sb_virt) |
389 | dma_free_coherent(dev: &qedi->pdev->dev, |
390 | size: sizeof(*sb_info->sb_virt), |
391 | cpu_addr: (void *)sb_info->sb_virt, |
392 | dma_handle: sb_info->sb_phys); |
393 | } |
394 | } |
395 | |
396 | static void qedi_free_fp(struct qedi_ctx *qedi) |
397 | { |
398 | kfree(objp: qedi->fp_array); |
399 | kfree(objp: qedi->sb_array); |
400 | } |
401 | |
402 | static void qedi_destroy_fp(struct qedi_ctx *qedi) |
403 | { |
404 | qedi_free_sb(qedi); |
405 | qedi_free_fp(qedi); |
406 | } |
407 | |
408 | static int qedi_alloc_fp(struct qedi_ctx *qedi) |
409 | { |
410 | int ret = 0; |
411 | |
412 | qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), |
413 | size: sizeof(struct qedi_fastpath), GFP_KERNEL); |
414 | if (!qedi->fp_array) { |
415 | QEDI_ERR(&qedi->dbg_ctx, |
416 | "fastpath fp array allocation failed.\n" ); |
417 | return -ENOMEM; |
418 | } |
419 | |
420 | qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), |
421 | size: sizeof(struct qed_sb_info), GFP_KERNEL); |
422 | if (!qedi->sb_array) { |
423 | QEDI_ERR(&qedi->dbg_ctx, |
424 | "fastpath sb array allocation failed.\n" ); |
425 | ret = -ENOMEM; |
426 | goto free_fp; |
427 | } |
428 | |
429 | return ret; |
430 | |
431 | free_fp: |
432 | qedi_free_fp(qedi); |
433 | return ret; |
434 | } |
435 | |
436 | static void qedi_int_fp(struct qedi_ctx *qedi) |
437 | { |
438 | struct qedi_fastpath *fp; |
439 | int id; |
440 | |
441 | memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * |
442 | sizeof(*qedi->fp_array)); |
443 | memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * |
444 | sizeof(*qedi->sb_array)); |
445 | |
446 | for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { |
447 | fp = &qedi->fp_array[id]; |
448 | fp->sb_info = &qedi->sb_array[id]; |
449 | fp->sb_id = id; |
450 | fp->qedi = qedi; |
451 | snprintf(buf: fp->name, size: sizeof(fp->name), fmt: "%s-fp-%d" , |
452 | "qedi" , id); |
453 | |
454 | /* fp_array[i] ---- irq cookie |
455 | * So init data which is needed in int ctx |
456 | */ |
457 | } |
458 | } |
459 | |
460 | static int qedi_prepare_fp(struct qedi_ctx *qedi) |
461 | { |
462 | struct qedi_fastpath *fp; |
463 | int id, ret = 0; |
464 | |
465 | ret = qedi_alloc_fp(qedi); |
466 | if (ret) |
467 | goto err; |
468 | |
469 | qedi_int_fp(qedi); |
470 | |
471 | for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { |
472 | fp = &qedi->fp_array[id]; |
473 | ret = qedi_alloc_and_init_sb(qedi, sb_info: fp->sb_info, sb_id: fp->sb_id); |
474 | if (ret) { |
475 | QEDI_ERR(&qedi->dbg_ctx, |
476 | "SB allocation and initialization failed.\n" ); |
477 | ret = -EIO; |
478 | goto err_init; |
479 | } |
480 | } |
481 | |
482 | return 0; |
483 | |
484 | err_init: |
485 | qedi_free_sb(qedi); |
486 | qedi_free_fp(qedi); |
487 | err: |
488 | return ret; |
489 | } |
490 | |
491 | static int qedi_setup_cid_que(struct qedi_ctx *qedi) |
492 | { |
493 | int i; |
494 | |
495 | qedi->cid_que.cid_que_base = kmalloc_array(n: qedi->max_active_conns, |
496 | size: sizeof(u32), GFP_KERNEL); |
497 | if (!qedi->cid_que.cid_que_base) |
498 | return -ENOMEM; |
499 | |
500 | qedi->cid_que.conn_cid_tbl = kmalloc_array(n: qedi->max_active_conns, |
501 | size: sizeof(struct qedi_conn *), |
502 | GFP_KERNEL); |
503 | if (!qedi->cid_que.conn_cid_tbl) { |
504 | kfree(objp: qedi->cid_que.cid_que_base); |
505 | qedi->cid_que.cid_que_base = NULL; |
506 | return -ENOMEM; |
507 | } |
508 | |
509 | qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; |
510 | qedi->cid_que.cid_q_prod_idx = 0; |
511 | qedi->cid_que.cid_q_cons_idx = 0; |
512 | qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; |
513 | qedi->cid_que.cid_free_cnt = qedi->max_active_conns; |
514 | |
515 | for (i = 0; i < qedi->max_active_conns; i++) { |
516 | qedi->cid_que.cid_que[i] = i; |
517 | qedi->cid_que.conn_cid_tbl[i] = NULL; |
518 | } |
519 | |
520 | return 0; |
521 | } |
522 | |
523 | static void qedi_release_cid_que(struct qedi_ctx *qedi) |
524 | { |
525 | kfree(objp: qedi->cid_que.cid_que_base); |
526 | qedi->cid_que.cid_que_base = NULL; |
527 | |
528 | kfree(objp: qedi->cid_que.conn_cid_tbl); |
529 | qedi->cid_que.conn_cid_tbl = NULL; |
530 | } |
531 | |
532 | static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, |
533 | u16 start_id, u16 next) |
534 | { |
535 | id_tbl->start = start_id; |
536 | id_tbl->max = size; |
537 | id_tbl->next = next; |
538 | spin_lock_init(&id_tbl->lock); |
539 | id_tbl->table = kcalloc(BITS_TO_LONGS(size), size: sizeof(long), GFP_KERNEL); |
540 | if (!id_tbl->table) |
541 | return -ENOMEM; |
542 | |
543 | return 0; |
544 | } |
545 | |
546 | static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) |
547 | { |
548 | kfree(objp: id_tbl->table); |
549 | id_tbl->table = NULL; |
550 | } |
551 | |
552 | int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) |
553 | { |
554 | int ret = -1; |
555 | |
556 | id -= id_tbl->start; |
557 | if (id >= id_tbl->max) |
558 | return ret; |
559 | |
560 | spin_lock(lock: &id_tbl->lock); |
561 | if (!test_bit(id, id_tbl->table)) { |
562 | set_bit(nr: id, addr: id_tbl->table); |
563 | ret = 0; |
564 | } |
565 | spin_unlock(lock: &id_tbl->lock); |
566 | return ret; |
567 | } |
568 | |
569 | u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) |
570 | { |
571 | u16 id; |
572 | |
573 | spin_lock(lock: &id_tbl->lock); |
574 | id = find_next_zero_bit(addr: id_tbl->table, size: id_tbl->max, offset: id_tbl->next); |
575 | if (id >= id_tbl->max) { |
576 | id = QEDI_LOCAL_PORT_INVALID; |
577 | if (id_tbl->next != 0) { |
578 | id = find_first_zero_bit(addr: id_tbl->table, size: id_tbl->next); |
579 | if (id >= id_tbl->next) |
580 | id = QEDI_LOCAL_PORT_INVALID; |
581 | } |
582 | } |
583 | |
584 | if (id < id_tbl->max) { |
585 | set_bit(nr: id, addr: id_tbl->table); |
586 | id_tbl->next = (id + 1) & (id_tbl->max - 1); |
587 | id += id_tbl->start; |
588 | } |
589 | |
590 | spin_unlock(lock: &id_tbl->lock); |
591 | |
592 | return id; |
593 | } |
594 | |
595 | void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) |
596 | { |
597 | if (id == QEDI_LOCAL_PORT_INVALID) |
598 | return; |
599 | |
600 | id -= id_tbl->start; |
601 | if (id >= id_tbl->max) |
602 | return; |
603 | |
604 | clear_bit(nr: id, addr: id_tbl->table); |
605 | } |
606 | |
607 | static void qedi_cm_free_mem(struct qedi_ctx *qedi) |
608 | { |
609 | kfree(objp: qedi->ep_tbl); |
610 | qedi->ep_tbl = NULL; |
611 | qedi_free_id_tbl(id_tbl: &qedi->lcl_port_tbl); |
612 | } |
613 | |
614 | static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) |
615 | { |
616 | u16 port_id; |
617 | |
618 | qedi->ep_tbl = kzalloc(size: (qedi->max_active_conns * |
619 | sizeof(struct qedi_endpoint *)), GFP_KERNEL); |
620 | if (!qedi->ep_tbl) |
621 | return -ENOMEM; |
622 | port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE); |
623 | if (qedi_init_id_tbl(id_tbl: &qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, |
624 | QEDI_LOCAL_PORT_MIN, next: port_id)) { |
625 | qedi_cm_free_mem(qedi); |
626 | return -ENOMEM; |
627 | } |
628 | |
629 | return 0; |
630 | } |
631 | |
632 | static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) |
633 | { |
634 | struct Scsi_Host *shost; |
635 | struct qedi_ctx *qedi = NULL; |
636 | |
637 | shost = iscsi_host_alloc(sht: &qedi_host_template, |
638 | dd_data_size: sizeof(struct qedi_ctx), xmit_can_sleep: 0); |
639 | if (!shost) { |
640 | QEDI_ERR(NULL, "Could not allocate shost\n" ); |
641 | goto exit_setup_shost; |
642 | } |
643 | |
644 | shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1; |
645 | shost->max_channel = 0; |
646 | shost->max_lun = ~0; |
647 | shost->max_cmd_len = 16; |
648 | shost->transportt = qedi_scsi_transport; |
649 | |
650 | qedi = iscsi_host_priv(shost); |
651 | memset(qedi, 0, sizeof(*qedi)); |
652 | qedi->shost = shost; |
653 | qedi->dbg_ctx.host_no = shost->host_no; |
654 | qedi->pdev = pdev; |
655 | qedi->dbg_ctx.pdev = pdev; |
656 | qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; |
657 | qedi->max_sqes = QEDI_SQ_SIZE; |
658 | |
659 | shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); |
660 | |
661 | pci_set_drvdata(pdev, data: qedi); |
662 | |
663 | exit_setup_shost: |
664 | return qedi; |
665 | } |
666 | |
667 | static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) |
668 | { |
669 | struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; |
670 | struct skb_work_list *work; |
671 | struct ethhdr *eh; |
672 | |
673 | if (!qedi) { |
674 | QEDI_ERR(NULL, "qedi is NULL\n" ); |
675 | return -1; |
676 | } |
677 | |
678 | if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { |
679 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, |
680 | "UIO DEV is not opened\n" ); |
681 | kfree_skb(skb); |
682 | return 0; |
683 | } |
684 | |
685 | eh = (struct ethhdr *)skb->data; |
686 | /* Undo VLAN encapsulation */ |
687 | if (eh->h_proto == htons(ETH_P_8021Q)) { |
688 | memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); |
689 | eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); |
690 | skb_reset_mac_header(skb); |
691 | } |
692 | |
693 | /* Filter out non FIP/FCoE frames here to free them faster */ |
694 | if (eh->h_proto != htons(ETH_P_ARP) && |
695 | eh->h_proto != htons(ETH_P_IP) && |
696 | eh->h_proto != htons(ETH_P_IPV6)) { |
697 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
698 | "Dropping frame ethertype [0x%x] len [0x%x].\n" , |
699 | eh->h_proto, skb->len); |
700 | kfree_skb(skb); |
701 | return 0; |
702 | } |
703 | |
704 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
705 | "Allowed frame ethertype [0x%x] len [0x%x].\n" , |
706 | eh->h_proto, skb->len); |
707 | |
708 | work = kzalloc(size: sizeof(*work), GFP_ATOMIC); |
709 | if (!work) { |
710 | QEDI_WARN(&qedi->dbg_ctx, |
711 | "Could not allocate work so dropping frame.\n" ); |
712 | kfree_skb(skb); |
713 | return 0; |
714 | } |
715 | |
716 | INIT_LIST_HEAD(list: &work->list); |
717 | work->skb = skb; |
718 | |
719 | if (skb_vlan_tag_present(skb)) |
720 | work->vlan_id = skb_vlan_tag_get(skb); |
721 | |
722 | if (work->vlan_id) |
723 | __vlan_insert_tag(skb: work->skb, htons(ETH_P_8021Q), vlan_tci: work->vlan_id); |
724 | |
725 | spin_lock_bh(lock: &qedi->ll2_lock); |
726 | list_add_tail(new: &work->list, head: &qedi->ll2_skb_list); |
727 | spin_unlock_bh(lock: &qedi->ll2_lock); |
728 | |
729 | wake_up_process(tsk: qedi->ll2_recv_thread); |
730 | |
731 | return 0; |
732 | } |
733 | |
734 | /* map this skb to iscsiuio mmaped region */ |
735 | static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, |
736 | u16 vlan_id) |
737 | { |
738 | struct qedi_uio_dev *udev = NULL; |
739 | struct qedi_uio_ctrl *uctrl = NULL; |
740 | struct qedi_rx_bd rxbd; |
741 | struct qedi_rx_bd *p_rxbd; |
742 | u32 rx_bd_prod; |
743 | void *pkt; |
744 | int len = 0; |
745 | u32 prod; |
746 | |
747 | if (!qedi) { |
748 | QEDI_ERR(NULL, "qedi is NULL\n" ); |
749 | return -1; |
750 | } |
751 | |
752 | udev = qedi->udev; |
753 | uctrl = udev->uctrl; |
754 | |
755 | ++uctrl->hw_rx_prod_cnt; |
756 | prod = (uctrl->hw_rx_prod + 1) % RX_RING; |
757 | |
758 | pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); |
759 | len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); |
760 | memcpy(pkt, skb->data, len); |
761 | |
762 | memset(&rxbd, 0, sizeof(rxbd)); |
763 | rxbd.rx_pkt_index = prod; |
764 | rxbd.rx_pkt_len = len; |
765 | rxbd.vlan_id = vlan_id; |
766 | |
767 | uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; |
768 | rx_bd_prod = uctrl->hw_rx_bd_prod; |
769 | p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; |
770 | p_rxbd += rx_bd_prod; |
771 | |
772 | memcpy(p_rxbd, &rxbd, sizeof(rxbd)); |
773 | |
774 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
775 | "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n" , |
776 | uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, |
777 | rxbd.rx_pkt_index, rxbd.rx_pkt_len); |
778 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
779 | "host_rx_cons [%d] hw_rx_bd_cons [%d].\n" , |
780 | uctrl->host_rx_cons, uctrl->host_rx_bd_cons); |
781 | |
782 | uctrl->hw_rx_prod = prod; |
783 | |
784 | /* notify the iscsiuio about new packet */ |
785 | uio_event_notify(info: &udev->qedi_uinfo); |
786 | |
787 | return 0; |
788 | } |
789 | |
790 | static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) |
791 | { |
792 | struct skb_work_list *work, *work_tmp; |
793 | |
794 | spin_lock_bh(lock: &qedi->ll2_lock); |
795 | list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { |
796 | list_del(entry: &work->list); |
797 | kfree_skb(skb: work->skb); |
798 | kfree(objp: work); |
799 | } |
800 | spin_unlock_bh(lock: &qedi->ll2_lock); |
801 | } |
802 | |
803 | static int qedi_ll2_recv_thread(void *arg) |
804 | { |
805 | struct qedi_ctx *qedi = (struct qedi_ctx *)arg; |
806 | struct skb_work_list *work, *work_tmp; |
807 | |
808 | set_user_nice(current, nice: -20); |
809 | |
810 | while (!kthread_should_stop()) { |
811 | spin_lock_bh(lock: &qedi->ll2_lock); |
812 | list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, |
813 | list) { |
814 | list_del(entry: &work->list); |
815 | qedi_ll2_process_skb(qedi, skb: work->skb, vlan_id: work->vlan_id); |
816 | kfree_skb(skb: work->skb); |
817 | kfree(objp: work); |
818 | } |
819 | set_current_state(TASK_INTERRUPTIBLE); |
820 | spin_unlock_bh(lock: &qedi->ll2_lock); |
821 | schedule(); |
822 | } |
823 | |
824 | __set_current_state(TASK_RUNNING); |
825 | return 0; |
826 | } |
827 | |
828 | static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) |
829 | { |
830 | u8 num_sq_pages; |
831 | u32 log_page_size; |
832 | int rval = 0; |
833 | |
834 | |
835 | num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; |
836 | |
837 | qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); |
838 | |
839 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
840 | "Number of CQ count is %d\n" , qedi->num_queues); |
841 | |
842 | memset(&qedi->pf_params.iscsi_pf_params, 0, |
843 | sizeof(qedi->pf_params.iscsi_pf_params)); |
844 | |
845 | qedi->p_cpuq = dma_alloc_coherent(dev: &qedi->pdev->dev, |
846 | size: qedi->num_queues * sizeof(struct qedi_glbl_q_params), |
847 | dma_handle: &qedi->hw_p_cpuq, GFP_KERNEL); |
848 | if (!qedi->p_cpuq) { |
849 | QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n" ); |
850 | rval = -1; |
851 | goto err_alloc_mem; |
852 | } |
853 | |
854 | rval = qedi_alloc_global_queues(qedi); |
855 | if (rval) { |
856 | QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n" ); |
857 | rval = -1; |
858 | goto err_alloc_mem; |
859 | } |
860 | |
861 | qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; |
862 | qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; |
863 | qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; |
864 | qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; |
865 | qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; |
866 | qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; |
867 | qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; |
868 | qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; |
869 | qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT; |
870 | qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT; |
871 | qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; |
872 | |
873 | for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { |
874 | if ((1 << log_page_size) == QEDI_PAGE_SIZE) |
875 | break; |
876 | } |
877 | qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; |
878 | |
879 | qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = |
880 | (u64)qedi->hw_p_cpuq; |
881 | |
882 | /* RQ BDQ initializations. |
883 | * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) |
884 | * rqe_log_size: 8 for 256B RQE |
885 | */ |
886 | qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; |
887 | /* BDQ address and size */ |
888 | qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = |
889 | qedi->bdq_pbl_list_dma; |
890 | qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = |
891 | qedi->bdq_pbl_list_num_entries; |
892 | qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; |
893 | |
894 | /* cq_num_entries: num_tasks + rq_num_entries */ |
895 | qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; |
896 | |
897 | qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; |
898 | qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; |
899 | |
900 | err_alloc_mem: |
901 | return rval; |
902 | } |
903 | |
904 | /* Free DMA coherent memory for array of queue pointers we pass to qed */ |
905 | static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) |
906 | { |
907 | size_t size = 0; |
908 | |
909 | if (qedi->p_cpuq) { |
910 | size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); |
911 | dma_free_coherent(dev: &qedi->pdev->dev, size, cpu_addr: qedi->p_cpuq, |
912 | dma_handle: qedi->hw_p_cpuq); |
913 | } |
914 | |
915 | qedi_free_global_queues(qedi); |
916 | |
917 | kfree(objp: qedi->global_queues); |
918 | } |
919 | |
920 | static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, |
921 | struct qedi_boot_target *tgt, u8 index) |
922 | { |
923 | u32 ipv6_en; |
924 | |
925 | ipv6_en = !!(block->generic.ctrl_flags & |
926 | NVM_ISCSI_CFG_GEN_IPV6_ENABLED); |
927 | |
928 | snprintf(buf: tgt->iscsi_name, size: sizeof(tgt->iscsi_name), fmt: "%s" , |
929 | block->target[index].target_name.byte); |
930 | |
931 | tgt->ipv6_en = ipv6_en; |
932 | |
933 | if (ipv6_en) |
934 | snprintf(buf: tgt->ip_addr, IPV6_LEN, fmt: "%pI6\n" , |
935 | block->target[index].ipv6_addr.byte); |
936 | else |
937 | snprintf(buf: tgt->ip_addr, IPV4_LEN, fmt: "%pI4\n" , |
938 | block->target[index].ipv4_addr.byte); |
939 | } |
940 | |
941 | static int qedi_find_boot_info(struct qedi_ctx *qedi, |
942 | struct qed_mfw_tlv_iscsi *iscsi, |
943 | struct nvm_iscsi_block *block) |
944 | { |
945 | struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; |
946 | u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; |
947 | struct iscsi_cls_session *cls_sess; |
948 | struct iscsi_cls_conn *cls_conn; |
949 | struct qedi_conn *qedi_conn; |
950 | struct iscsi_session *sess; |
951 | struct iscsi_conn *conn; |
952 | char ep_ip_addr[64]; |
953 | int i, ret = 0; |
954 | |
955 | pri_ctrl_flags = !!(block->target[0].ctrl_flags & |
956 | NVM_ISCSI_CFG_TARGET_ENABLED); |
957 | if (pri_ctrl_flags) { |
958 | pri_tgt = kzalloc(size: sizeof(*pri_tgt), GFP_KERNEL); |
959 | if (!pri_tgt) |
960 | return -1; |
961 | qedi_get_boot_tgt_info(block, tgt: pri_tgt, index: 0); |
962 | } |
963 | |
964 | sec_ctrl_flags = !!(block->target[1].ctrl_flags & |
965 | NVM_ISCSI_CFG_TARGET_ENABLED); |
966 | if (sec_ctrl_flags) { |
967 | sec_tgt = kzalloc(size: sizeof(*sec_tgt), GFP_KERNEL); |
968 | if (!sec_tgt) { |
969 | ret = -1; |
970 | goto free_tgt; |
971 | } |
972 | qedi_get_boot_tgt_info(block, tgt: sec_tgt, index: 1); |
973 | } |
974 | |
975 | for (i = 0; i < qedi->max_active_conns; i++) { |
976 | qedi_conn = qedi_get_conn_from_id(qedi, iscsi_cid: i); |
977 | if (!qedi_conn) |
978 | continue; |
979 | |
980 | if (qedi_conn->ep->ip_type == TCP_IPV4) |
981 | snprintf(buf: ep_ip_addr, IPV4_LEN, fmt: "%pI4\n" , |
982 | qedi_conn->ep->dst_addr); |
983 | else |
984 | snprintf(buf: ep_ip_addr, IPV6_LEN, fmt: "%pI6\n" , |
985 | qedi_conn->ep->dst_addr); |
986 | |
987 | cls_conn = qedi_conn->cls_conn; |
988 | conn = cls_conn->dd_data; |
989 | cls_sess = iscsi_conn_to_session(cls_conn); |
990 | sess = cls_sess->dd_data; |
991 | |
992 | if (!iscsi_is_session_online(session: cls_sess)) |
993 | continue; |
994 | |
995 | if (!sess->targetname) |
996 | continue; |
997 | |
998 | if (pri_ctrl_flags) { |
999 | if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && |
1000 | !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { |
1001 | found = 1; |
1002 | break; |
1003 | } |
1004 | } |
1005 | |
1006 | if (sec_ctrl_flags) { |
1007 | if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && |
1008 | !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { |
1009 | found = 1; |
1010 | break; |
1011 | } |
1012 | } |
1013 | } |
1014 | |
1015 | if (found) { |
1016 | if (conn->hdrdgst_en) { |
1017 | iscsi->header_digest_set = true; |
1018 | iscsi->header_digest = 1; |
1019 | } |
1020 | |
1021 | if (conn->datadgst_en) { |
1022 | iscsi->data_digest_set = true; |
1023 | iscsi->data_digest = 1; |
1024 | } |
1025 | iscsi->boot_taget_portal_set = true; |
1026 | iscsi->boot_taget_portal = sess->tpgt; |
1027 | |
1028 | } else { |
1029 | ret = -1; |
1030 | } |
1031 | |
1032 | if (sec_ctrl_flags) |
1033 | kfree(objp: sec_tgt); |
1034 | free_tgt: |
1035 | if (pri_ctrl_flags) |
1036 | kfree(objp: pri_tgt); |
1037 | |
1038 | return ret; |
1039 | } |
1040 | |
1041 | static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) |
1042 | { |
1043 | struct qedi_ctx *qedi; |
1044 | |
1045 | if (!dev) { |
1046 | QEDI_INFO(NULL, QEDI_LOG_EVT, |
1047 | "dev is NULL so ignoring get_generic_tlv_data request.\n" ); |
1048 | return; |
1049 | } |
1050 | qedi = (struct qedi_ctx *)dev; |
1051 | |
1052 | memset(data, 0, sizeof(struct qed_generic_tlvs)); |
1053 | ether_addr_copy(dst: data->mac[0], src: qedi->mac); |
1054 | } |
1055 | |
1056 | /* |
1057 | * Protocol TLV handler |
1058 | */ |
1059 | static void qedi_get_protocol_tlv_data(void *dev, void *data) |
1060 | { |
1061 | struct qed_mfw_tlv_iscsi *iscsi = data; |
1062 | struct qed_iscsi_stats *fw_iscsi_stats; |
1063 | struct nvm_iscsi_block *block = NULL; |
1064 | u32 chap_en = 0, mchap_en = 0; |
1065 | struct qedi_ctx *qedi = dev; |
1066 | int rval = 0; |
1067 | |
1068 | fw_iscsi_stats = kmalloc(size: sizeof(*fw_iscsi_stats), GFP_KERNEL); |
1069 | if (!fw_iscsi_stats) { |
1070 | QEDI_ERR(&qedi->dbg_ctx, |
1071 | "Could not allocate memory for fw_iscsi_stats.\n" ); |
1072 | goto exit_get_data; |
1073 | } |
1074 | |
1075 | mutex_lock(&qedi->stats_lock); |
1076 | /* Query firmware for offload stats */ |
1077 | qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); |
1078 | mutex_unlock(lock: &qedi->stats_lock); |
1079 | |
1080 | iscsi->rx_frames_set = true; |
1081 | iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; |
1082 | iscsi->rx_bytes_set = true; |
1083 | iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; |
1084 | iscsi->tx_frames_set = true; |
1085 | iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; |
1086 | iscsi->tx_bytes_set = true; |
1087 | iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; |
1088 | iscsi->frame_size_set = true; |
1089 | iscsi->frame_size = qedi->ll2_mtu; |
1090 | block = qedi_get_nvram_block(qedi); |
1091 | if (block) { |
1092 | chap_en = !!(block->generic.ctrl_flags & |
1093 | NVM_ISCSI_CFG_GEN_CHAP_ENABLED); |
1094 | mchap_en = !!(block->generic.ctrl_flags & |
1095 | NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); |
1096 | |
1097 | iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; |
1098 | iscsi->auth_method = 1; |
1099 | if (chap_en) |
1100 | iscsi->auth_method = 2; |
1101 | if (mchap_en) |
1102 | iscsi->auth_method = 3; |
1103 | |
1104 | iscsi->tx_desc_size_set = true; |
1105 | iscsi->tx_desc_size = QEDI_SQ_SIZE; |
1106 | iscsi->rx_desc_size_set = true; |
1107 | iscsi->rx_desc_size = QEDI_CQ_SIZE; |
1108 | |
1109 | /* tpgt, hdr digest, data digest */ |
1110 | rval = qedi_find_boot_info(qedi, iscsi, block); |
1111 | if (rval) |
1112 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1113 | "Boot target not set" ); |
1114 | } |
1115 | |
1116 | kfree(objp: fw_iscsi_stats); |
1117 | exit_get_data: |
1118 | return; |
1119 | } |
1120 | |
1121 | void qedi_schedule_hw_err_handler(void *dev, |
1122 | enum qed_hw_err_type err_type) |
1123 | { |
1124 | struct qedi_ctx *qedi = (struct qedi_ctx *)dev; |
1125 | unsigned long override_flags = qedi_flags_override; |
1126 | |
1127 | if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags)) |
1128 | qedi->qedi_err_flags = qedi_flags_override; |
1129 | |
1130 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1131 | "HW error handler scheduled, err=%d err_flags=0x%x\n" , |
1132 | err_type, qedi->qedi_err_flags); |
1133 | |
1134 | switch (err_type) { |
1135 | case QED_HW_ERR_FAN_FAIL: |
1136 | schedule_delayed_work(dwork: &qedi->board_disable_work, delay: 0); |
1137 | break; |
1138 | case QED_HW_ERR_MFW_RESP_FAIL: |
1139 | case QED_HW_ERR_HW_ATTN: |
1140 | case QED_HW_ERR_DMAE_FAIL: |
1141 | case QED_HW_ERR_RAMROD_FAIL: |
1142 | case QED_HW_ERR_FW_ASSERT: |
1143 | /* Prevent HW attentions from being reasserted */ |
1144 | if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags)) |
1145 | qedi_ops->common->attn_clr_enable(qedi->cdev, true); |
1146 | |
1147 | if (err_type == QED_HW_ERR_RAMROD_FAIL && |
1148 | test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags)) |
1149 | qedi_ops->common->recovery_process(qedi->cdev); |
1150 | |
1151 | break; |
1152 | default: |
1153 | break; |
1154 | } |
1155 | } |
1156 | |
1157 | static void qedi_schedule_recovery_handler(void *dev) |
1158 | { |
1159 | struct qedi_ctx *qedi = dev; |
1160 | |
1161 | QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n" ); |
1162 | |
1163 | if (test_and_set_bit(QEDI_IN_RECOVERY, addr: &qedi->flags)) |
1164 | return; |
1165 | |
1166 | atomic_set(v: &qedi->link_state, QEDI_LINK_DOWN); |
1167 | |
1168 | schedule_delayed_work(dwork: &qedi->recovery_work, delay: 0); |
1169 | } |
1170 | |
1171 | static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session) |
1172 | { |
1173 | struct iscsi_session *session = cls_session->dd_data; |
1174 | struct iscsi_conn *conn = session->leadconn; |
1175 | struct qedi_conn *qedi_conn = conn->dd_data; |
1176 | |
1177 | qedi_start_conn_recovery(qedi: qedi_conn->qedi, qedi_conn); |
1178 | } |
1179 | |
1180 | static void qedi_link_update(void *dev, struct qed_link_output *link) |
1181 | { |
1182 | struct qedi_ctx *qedi = (struct qedi_ctx *)dev; |
1183 | |
1184 | if (link->link_up) { |
1185 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n" ); |
1186 | atomic_set(v: &qedi->link_state, QEDI_LINK_UP); |
1187 | } else { |
1188 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1189 | "Link Down event.\n" ); |
1190 | atomic_set(v: &qedi->link_state, QEDI_LINK_DOWN); |
1191 | iscsi_host_for_each_session(shost: qedi->shost, fn: qedi_set_conn_recovery); |
1192 | } |
1193 | } |
1194 | |
1195 | static struct qed_iscsi_cb_ops qedi_cb_ops = { |
1196 | { |
1197 | .link_update = qedi_link_update, |
1198 | .schedule_recovery_handler = qedi_schedule_recovery_handler, |
1199 | .schedule_hw_err_handler = qedi_schedule_hw_err_handler, |
1200 | .get_protocol_tlv_data = qedi_get_protocol_tlv_data, |
1201 | .get_generic_tlv_data = qedi_get_generic_tlv_data, |
1202 | } |
1203 | }; |
1204 | |
1205 | static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, |
1206 | u16 que_idx, struct qedi_percpu_s *p) |
1207 | { |
1208 | struct qedi_work *qedi_work; |
1209 | struct qedi_conn *q_conn; |
1210 | struct qedi_cmd *qedi_cmd; |
1211 | u32 iscsi_cid; |
1212 | int rc = 0; |
1213 | |
1214 | iscsi_cid = cqe->cqe_common.conn_id; |
1215 | q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
1216 | if (!q_conn) { |
1217 | QEDI_WARN(&qedi->dbg_ctx, |
1218 | "Session no longer exists for cid=0x%x!!\n" , |
1219 | iscsi_cid); |
1220 | return -1; |
1221 | } |
1222 | |
1223 | switch (cqe->cqe_common.cqe_type) { |
1224 | case ISCSI_CQE_TYPE_SOLICITED: |
1225 | case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: |
1226 | qedi_cmd = qedi_get_cmd_from_tid(qedi, tid: cqe->cqe_solicited.itid); |
1227 | if (!qedi_cmd) { |
1228 | rc = -1; |
1229 | break; |
1230 | } |
1231 | INIT_LIST_HEAD(list: &qedi_cmd->cqe_work.list); |
1232 | qedi_cmd->cqe_work.qedi = qedi; |
1233 | memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); |
1234 | qedi_cmd->cqe_work.que_idx = que_idx; |
1235 | qedi_cmd->cqe_work.is_solicited = true; |
1236 | list_add_tail(new: &qedi_cmd->cqe_work.list, head: &p->work_list); |
1237 | break; |
1238 | case ISCSI_CQE_TYPE_UNSOLICITED: |
1239 | case ISCSI_CQE_TYPE_DUMMY: |
1240 | case ISCSI_CQE_TYPE_TASK_CLEANUP: |
1241 | qedi_work = kzalloc(size: sizeof(*qedi_work), GFP_ATOMIC); |
1242 | if (!qedi_work) { |
1243 | rc = -1; |
1244 | break; |
1245 | } |
1246 | INIT_LIST_HEAD(list: &qedi_work->list); |
1247 | qedi_work->qedi = qedi; |
1248 | memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); |
1249 | qedi_work->que_idx = que_idx; |
1250 | qedi_work->is_solicited = false; |
1251 | list_add_tail(new: &qedi_work->list, head: &p->work_list); |
1252 | break; |
1253 | default: |
1254 | rc = -1; |
1255 | QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n" ); |
1256 | } |
1257 | return rc; |
1258 | } |
1259 | |
1260 | static bool qedi_process_completions(struct qedi_fastpath *fp) |
1261 | { |
1262 | struct qedi_ctx *qedi = fp->qedi; |
1263 | struct qed_sb_info *sb_info = fp->sb_info; |
1264 | struct status_block *sb = sb_info->sb_virt; |
1265 | struct qedi_percpu_s *p = NULL; |
1266 | struct global_queue *que; |
1267 | u16 prod_idx; |
1268 | unsigned long flags; |
1269 | union iscsi_cqe *cqe; |
1270 | int cpu; |
1271 | int ret; |
1272 | |
1273 | /* Get the current firmware producer index */ |
1274 | prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; |
1275 | |
1276 | if (prod_idx >= QEDI_CQ_SIZE) |
1277 | prod_idx = prod_idx % QEDI_CQ_SIZE; |
1278 | |
1279 | que = qedi->global_queues[fp->sb_id]; |
1280 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
1281 | "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n" , |
1282 | que, prod_idx, que->cq_cons_idx, fp->sb_id); |
1283 | |
1284 | qedi->intr_cpu = fp->sb_id; |
1285 | cpu = smp_processor_id(); |
1286 | p = &per_cpu(qedi_percpu, cpu); |
1287 | |
1288 | if (unlikely(!p->iothread)) |
1289 | WARN_ON(1); |
1290 | |
1291 | spin_lock_irqsave(&p->p_work_lock, flags); |
1292 | while (que->cq_cons_idx != prod_idx) { |
1293 | cqe = &que->cq[que->cq_cons_idx]; |
1294 | |
1295 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
1296 | "cqe=%p prod_idx=%d cons_idx=%d.\n" , |
1297 | cqe, prod_idx, que->cq_cons_idx); |
1298 | |
1299 | ret = qedi_queue_cqe(qedi, cqe, que_idx: fp->sb_id, p); |
1300 | if (ret) |
1301 | QEDI_WARN(&qedi->dbg_ctx, |
1302 | "Dropping CQE 0x%x for cid=0x%x.\n" , |
1303 | que->cq_cons_idx, cqe->cqe_common.conn_id); |
1304 | |
1305 | que->cq_cons_idx++; |
1306 | if (que->cq_cons_idx == QEDI_CQ_SIZE) |
1307 | que->cq_cons_idx = 0; |
1308 | } |
1309 | wake_up_process(tsk: p->iothread); |
1310 | spin_unlock_irqrestore(lock: &p->p_work_lock, flags); |
1311 | |
1312 | return true; |
1313 | } |
1314 | |
1315 | static bool qedi_fp_has_work(struct qedi_fastpath *fp) |
1316 | { |
1317 | struct qedi_ctx *qedi = fp->qedi; |
1318 | struct global_queue *que; |
1319 | struct qed_sb_info *sb_info = fp->sb_info; |
1320 | struct status_block *sb = sb_info->sb_virt; |
1321 | u16 prod_idx; |
1322 | |
1323 | barrier(); |
1324 | |
1325 | /* Get the current firmware producer index */ |
1326 | prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; |
1327 | |
1328 | /* Get the pointer to the global CQ this completion is on */ |
1329 | que = qedi->global_queues[fp->sb_id]; |
1330 | |
1331 | /* prod idx wrap around uint16 */ |
1332 | if (prod_idx >= QEDI_CQ_SIZE) |
1333 | prod_idx = prod_idx % QEDI_CQ_SIZE; |
1334 | |
1335 | return (que->cq_cons_idx != prod_idx); |
1336 | } |
1337 | |
1338 | /* MSI-X fastpath handler code */ |
1339 | static irqreturn_t qedi_msix_handler(int irq, void *dev_id) |
1340 | { |
1341 | struct qedi_fastpath *fp = dev_id; |
1342 | struct qedi_ctx *qedi = fp->qedi; |
1343 | bool wake_io_thread = true; |
1344 | |
1345 | qed_sb_ack(sb_info: fp->sb_info, int_cmd: IGU_INT_DISABLE, upd_flg: 0); |
1346 | |
1347 | process_again: |
1348 | wake_io_thread = qedi_process_completions(fp); |
1349 | if (wake_io_thread) { |
1350 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
1351 | "process already running\n" ); |
1352 | } |
1353 | |
1354 | if (!qedi_fp_has_work(fp)) |
1355 | qed_sb_update_sb_idx(sb_info: fp->sb_info); |
1356 | |
1357 | /* Check for more work */ |
1358 | rmb(); |
1359 | |
1360 | if (!qedi_fp_has_work(fp)) |
1361 | qed_sb_ack(sb_info: fp->sb_info, int_cmd: IGU_INT_ENABLE, upd_flg: 1); |
1362 | else |
1363 | goto process_again; |
1364 | |
1365 | return IRQ_HANDLED; |
1366 | } |
1367 | |
1368 | /* simd handler for MSI/INTa */ |
1369 | static void qedi_simd_int_handler(void *cookie) |
1370 | { |
1371 | /* Cookie is qedi_ctx struct */ |
1372 | struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; |
1373 | |
1374 | QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n" , qedi); |
1375 | } |
1376 | |
1377 | #define QEDI_SIMD_HANDLER_NUM 0 |
1378 | static void qedi_sync_free_irqs(struct qedi_ctx *qedi) |
1379 | { |
1380 | int i; |
1381 | u16 idx; |
1382 | |
1383 | if (qedi->int_info.msix_cnt) { |
1384 | for (i = 0; i < qedi->int_info.used_cnt; i++) { |
1385 | idx = i * qedi->dev_info.common.num_hwfns + |
1386 | qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); |
1387 | |
1388 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1389 | "Freeing IRQ #%d vector_idx=%d.\n" , i, idx); |
1390 | |
1391 | synchronize_irq(irq: qedi->int_info.msix[idx].vector); |
1392 | irq_set_affinity_hint(irq: qedi->int_info.msix[idx].vector, |
1393 | NULL); |
1394 | free_irq(qedi->int_info.msix[idx].vector, |
1395 | &qedi->fp_array[i]); |
1396 | } |
1397 | } else { |
1398 | qedi_ops->common->simd_handler_clean(qedi->cdev, |
1399 | QEDI_SIMD_HANDLER_NUM); |
1400 | } |
1401 | |
1402 | qedi->int_info.used_cnt = 0; |
1403 | qedi_ops->common->set_fp_int(qedi->cdev, 0); |
1404 | } |
1405 | |
1406 | static int qedi_request_msix_irq(struct qedi_ctx *qedi) |
1407 | { |
1408 | int i, rc, cpu; |
1409 | u16 idx; |
1410 | |
1411 | cpu = cpumask_first(cpu_online_mask); |
1412 | for (i = 0; i < qedi->msix_count; i++) { |
1413 | idx = i * qedi->dev_info.common.num_hwfns + |
1414 | qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); |
1415 | |
1416 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1417 | "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n" , |
1418 | qedi->dev_info.common.num_hwfns, |
1419 | qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); |
1420 | |
1421 | rc = request_irq(irq: qedi->int_info.msix[idx].vector, |
1422 | handler: qedi_msix_handler, flags: 0, name: "qedi" , |
1423 | dev: &qedi->fp_array[i]); |
1424 | if (rc) { |
1425 | QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n" ); |
1426 | qedi_sync_free_irqs(qedi); |
1427 | return rc; |
1428 | } |
1429 | qedi->int_info.used_cnt++; |
1430 | rc = irq_set_affinity_hint(irq: qedi->int_info.msix[idx].vector, |
1431 | m: get_cpu_mask(cpu)); |
1432 | cpu = cpumask_next(n: cpu, cpu_online_mask); |
1433 | } |
1434 | |
1435 | return 0; |
1436 | } |
1437 | |
1438 | static int qedi_setup_int(struct qedi_ctx *qedi) |
1439 | { |
1440 | int rc = 0; |
1441 | |
1442 | rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues); |
1443 | if (rc < 0) |
1444 | goto exit_setup_int; |
1445 | |
1446 | qedi->msix_count = rc; |
1447 | |
1448 | rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); |
1449 | if (rc) |
1450 | goto exit_setup_int; |
1451 | |
1452 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
1453 | "Number of msix_cnt = 0x%x num of cpus = 0x%x\n" , |
1454 | qedi->int_info.msix_cnt, num_online_cpus()); |
1455 | |
1456 | if (qedi->int_info.msix_cnt) { |
1457 | rc = qedi_request_msix_irq(qedi); |
1458 | goto exit_setup_int; |
1459 | } else { |
1460 | qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, |
1461 | QEDI_SIMD_HANDLER_NUM, |
1462 | qedi_simd_int_handler); |
1463 | qedi->int_info.used_cnt = 1; |
1464 | } |
1465 | |
1466 | exit_setup_int: |
1467 | return rc; |
1468 | } |
1469 | |
1470 | static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) |
1471 | { |
1472 | if (qedi->iscsi_image) |
1473 | dma_free_coherent(dev: &qedi->pdev->dev, |
1474 | size: sizeof(struct qedi_nvm_iscsi_image), |
1475 | cpu_addr: qedi->iscsi_image, dma_handle: qedi->nvm_buf_dma); |
1476 | } |
1477 | |
1478 | static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) |
1479 | { |
1480 | qedi->iscsi_image = dma_alloc_coherent(dev: &qedi->pdev->dev, |
1481 | size: sizeof(struct qedi_nvm_iscsi_image), |
1482 | dma_handle: &qedi->nvm_buf_dma, GFP_KERNEL); |
1483 | if (!qedi->iscsi_image) { |
1484 | QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n" ); |
1485 | return -ENOMEM; |
1486 | } |
1487 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1488 | "NVM BUF addr=0x%p dma=0x%llx.\n" , qedi->iscsi_image, |
1489 | qedi->nvm_buf_dma); |
1490 | |
1491 | return 0; |
1492 | } |
1493 | |
1494 | static void qedi_free_bdq(struct qedi_ctx *qedi) |
1495 | { |
1496 | int i; |
1497 | |
1498 | if (qedi->bdq_pbl_list) |
1499 | dma_free_coherent(dev: &qedi->pdev->dev, QEDI_PAGE_SIZE, |
1500 | cpu_addr: qedi->bdq_pbl_list, dma_handle: qedi->bdq_pbl_list_dma); |
1501 | |
1502 | if (qedi->bdq_pbl) |
1503 | dma_free_coherent(dev: &qedi->pdev->dev, size: qedi->bdq_pbl_mem_size, |
1504 | cpu_addr: qedi->bdq_pbl, dma_handle: qedi->bdq_pbl_dma); |
1505 | |
1506 | for (i = 0; i < QEDI_BDQ_NUM; i++) { |
1507 | if (qedi->bdq[i].buf_addr) { |
1508 | dma_free_coherent(dev: &qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, |
1509 | cpu_addr: qedi->bdq[i].buf_addr, |
1510 | dma_handle: qedi->bdq[i].buf_dma); |
1511 | } |
1512 | } |
1513 | } |
1514 | |
1515 | static void qedi_free_global_queues(struct qedi_ctx *qedi) |
1516 | { |
1517 | int i; |
1518 | struct global_queue **gl = qedi->global_queues; |
1519 | |
1520 | for (i = 0; i < qedi->num_queues; i++) { |
1521 | if (!gl[i]) |
1522 | continue; |
1523 | |
1524 | if (gl[i]->cq) |
1525 | dma_free_coherent(dev: &qedi->pdev->dev, size: gl[i]->cq_mem_size, |
1526 | cpu_addr: gl[i]->cq, dma_handle: gl[i]->cq_dma); |
1527 | if (gl[i]->cq_pbl) |
1528 | dma_free_coherent(dev: &qedi->pdev->dev, size: gl[i]->cq_pbl_size, |
1529 | cpu_addr: gl[i]->cq_pbl, dma_handle: gl[i]->cq_pbl_dma); |
1530 | |
1531 | kfree(objp: gl[i]); |
1532 | } |
1533 | qedi_free_bdq(qedi); |
1534 | qedi_free_nvm_iscsi_cfg(qedi); |
1535 | } |
1536 | |
1537 | static int qedi_alloc_bdq(struct qedi_ctx *qedi) |
1538 | { |
1539 | int i; |
1540 | struct scsi_bd *pbl; |
1541 | u64 *list; |
1542 | |
1543 | /* Alloc dma memory for BDQ buffers */ |
1544 | for (i = 0; i < QEDI_BDQ_NUM; i++) { |
1545 | qedi->bdq[i].buf_addr = |
1546 | dma_alloc_coherent(dev: &qedi->pdev->dev, |
1547 | QEDI_BDQ_BUF_SIZE, |
1548 | dma_handle: &qedi->bdq[i].buf_dma, |
1549 | GFP_KERNEL); |
1550 | if (!qedi->bdq[i].buf_addr) { |
1551 | QEDI_ERR(&qedi->dbg_ctx, |
1552 | "Could not allocate BDQ buffer %d.\n" , i); |
1553 | return -ENOMEM; |
1554 | } |
1555 | } |
1556 | |
1557 | /* Alloc dma memory for BDQ page buffer list */ |
1558 | qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); |
1559 | qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); |
1560 | qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); |
1561 | |
1562 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n" , |
1563 | qedi->rq_num_entries); |
1564 | |
1565 | qedi->bdq_pbl = dma_alloc_coherent(dev: &qedi->pdev->dev, |
1566 | size: qedi->bdq_pbl_mem_size, |
1567 | dma_handle: &qedi->bdq_pbl_dma, GFP_KERNEL); |
1568 | if (!qedi->bdq_pbl) { |
1569 | QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n" ); |
1570 | return -ENOMEM; |
1571 | } |
1572 | |
1573 | /* |
1574 | * Populate BDQ PBL with physical and virtual address of individual |
1575 | * BDQ buffers |
1576 | */ |
1577 | pbl = (struct scsi_bd *)qedi->bdq_pbl; |
1578 | for (i = 0; i < QEDI_BDQ_NUM; i++) { |
1579 | pbl->address.hi = |
1580 | cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); |
1581 | pbl->address.lo = |
1582 | cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); |
1583 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
1584 | "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n" , |
1585 | pbl, pbl->address.hi, pbl->address.lo, i); |
1586 | pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; |
1587 | pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; |
1588 | pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; |
1589 | pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); |
1590 | pbl++; |
1591 | } |
1592 | |
1593 | /* Allocate list of PBL pages */ |
1594 | qedi->bdq_pbl_list = dma_alloc_coherent(dev: &qedi->pdev->dev, |
1595 | QEDI_PAGE_SIZE, |
1596 | dma_handle: &qedi->bdq_pbl_list_dma, |
1597 | GFP_KERNEL); |
1598 | if (!qedi->bdq_pbl_list) { |
1599 | QEDI_ERR(&qedi->dbg_ctx, |
1600 | "Could not allocate list of PBL pages.\n" ); |
1601 | return -ENOMEM; |
1602 | } |
1603 | |
1604 | /* |
1605 | * Now populate PBL list with pages that contain pointers to the |
1606 | * individual buffers. |
1607 | */ |
1608 | qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / |
1609 | QEDI_PAGE_SIZE; |
1610 | list = (u64 *)qedi->bdq_pbl_list; |
1611 | for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { |
1612 | *list = qedi->bdq_pbl_dma; |
1613 | list++; |
1614 | } |
1615 | |
1616 | return 0; |
1617 | } |
1618 | |
1619 | static int qedi_alloc_global_queues(struct qedi_ctx *qedi) |
1620 | { |
1621 | u32 *list; |
1622 | int i; |
1623 | int status; |
1624 | u32 *pbl; |
1625 | dma_addr_t page; |
1626 | int num_pages; |
1627 | |
1628 | /* |
1629 | * Number of global queues (CQ / RQ). This should |
1630 | * be <= number of available MSIX vectors for the PF |
1631 | */ |
1632 | if (!qedi->num_queues) { |
1633 | QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n" ); |
1634 | return -ENOMEM; |
1635 | } |
1636 | |
1637 | /* Make sure we allocated the PBL that will contain the physical |
1638 | * addresses of our queues |
1639 | */ |
1640 | if (!qedi->p_cpuq) { |
1641 | status = -EINVAL; |
1642 | goto mem_alloc_failure; |
1643 | } |
1644 | |
1645 | qedi->global_queues = kzalloc(size: (sizeof(struct global_queue *) * |
1646 | qedi->num_queues), GFP_KERNEL); |
1647 | if (!qedi->global_queues) { |
1648 | QEDI_ERR(&qedi->dbg_ctx, |
1649 | "Unable to allocate global queues array ptr memory\n" ); |
1650 | return -ENOMEM; |
1651 | } |
1652 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
1653 | "qedi->global_queues=%p.\n" , qedi->global_queues); |
1654 | |
1655 | /* Allocate DMA coherent buffers for BDQ */ |
1656 | status = qedi_alloc_bdq(qedi); |
1657 | if (status) |
1658 | goto mem_alloc_failure; |
1659 | |
1660 | /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ |
1661 | status = qedi_alloc_nvm_iscsi_cfg(qedi); |
1662 | if (status) |
1663 | goto mem_alloc_failure; |
1664 | |
1665 | /* Allocate a CQ and an associated PBL for each MSI-X |
1666 | * vector. |
1667 | */ |
1668 | for (i = 0; i < qedi->num_queues; i++) { |
1669 | qedi->global_queues[i] = |
1670 | kzalloc(size: sizeof(*qedi->global_queues[0]), |
1671 | GFP_KERNEL); |
1672 | if (!qedi->global_queues[i]) { |
1673 | QEDI_ERR(&qedi->dbg_ctx, |
1674 | "Unable to allocation global queue %d.\n" , i); |
1675 | status = -ENOMEM; |
1676 | goto mem_alloc_failure; |
1677 | } |
1678 | |
1679 | qedi->global_queues[i]->cq_mem_size = |
1680 | (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); |
1681 | qedi->global_queues[i]->cq_mem_size = |
1682 | (qedi->global_queues[i]->cq_mem_size + |
1683 | (QEDI_PAGE_SIZE - 1)); |
1684 | |
1685 | qedi->global_queues[i]->cq_pbl_size = |
1686 | (qedi->global_queues[i]->cq_mem_size / |
1687 | QEDI_PAGE_SIZE) * sizeof(void *); |
1688 | qedi->global_queues[i]->cq_pbl_size = |
1689 | (qedi->global_queues[i]->cq_pbl_size + |
1690 | (QEDI_PAGE_SIZE - 1)); |
1691 | |
1692 | qedi->global_queues[i]->cq = dma_alloc_coherent(dev: &qedi->pdev->dev, |
1693 | size: qedi->global_queues[i]->cq_mem_size, |
1694 | dma_handle: &qedi->global_queues[i]->cq_dma, |
1695 | GFP_KERNEL); |
1696 | |
1697 | if (!qedi->global_queues[i]->cq) { |
1698 | QEDI_WARN(&qedi->dbg_ctx, |
1699 | "Could not allocate cq.\n" ); |
1700 | status = -ENOMEM; |
1701 | goto mem_alloc_failure; |
1702 | } |
1703 | qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(dev: &qedi->pdev->dev, |
1704 | size: qedi->global_queues[i]->cq_pbl_size, |
1705 | dma_handle: &qedi->global_queues[i]->cq_pbl_dma, |
1706 | GFP_KERNEL); |
1707 | |
1708 | if (!qedi->global_queues[i]->cq_pbl) { |
1709 | QEDI_WARN(&qedi->dbg_ctx, |
1710 | "Could not allocate cq PBL.\n" ); |
1711 | status = -ENOMEM; |
1712 | goto mem_alloc_failure; |
1713 | } |
1714 | |
1715 | /* Create PBL */ |
1716 | num_pages = qedi->global_queues[i]->cq_mem_size / |
1717 | QEDI_PAGE_SIZE; |
1718 | page = qedi->global_queues[i]->cq_dma; |
1719 | pbl = (u32 *)qedi->global_queues[i]->cq_pbl; |
1720 | |
1721 | while (num_pages--) { |
1722 | *pbl = (u32)page; |
1723 | pbl++; |
1724 | *pbl = (u32)((u64)page >> 32); |
1725 | pbl++; |
1726 | page += QEDI_PAGE_SIZE; |
1727 | } |
1728 | } |
1729 | |
1730 | list = (u32 *)qedi->p_cpuq; |
1731 | |
1732 | /* |
1733 | * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, |
1734 | * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points |
1735 | * to the physical address which contains an array of pointers to the |
1736 | * physical addresses of the specific queue pages. |
1737 | */ |
1738 | for (i = 0; i < qedi->num_queues; i++) { |
1739 | *list = (u32)qedi->global_queues[i]->cq_pbl_dma; |
1740 | list++; |
1741 | *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); |
1742 | list++; |
1743 | |
1744 | *list = (u32)0; |
1745 | list++; |
1746 | *list = (u32)((u64)0 >> 32); |
1747 | list++; |
1748 | } |
1749 | |
1750 | return 0; |
1751 | |
1752 | mem_alloc_failure: |
1753 | qedi_free_global_queues(qedi); |
1754 | return status; |
1755 | } |
1756 | |
1757 | int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) |
1758 | { |
1759 | int rval = 0; |
1760 | u32 *pbl; |
1761 | dma_addr_t page; |
1762 | int num_pages; |
1763 | |
1764 | if (!ep) |
1765 | return -EIO; |
1766 | |
1767 | /* Calculate appropriate queue and PBL sizes */ |
1768 | ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); |
1769 | ep->sq_mem_size += QEDI_PAGE_SIZE - 1; |
1770 | |
1771 | ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); |
1772 | ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; |
1773 | |
1774 | ep->sq = dma_alloc_coherent(dev: &qedi->pdev->dev, size: ep->sq_mem_size, |
1775 | dma_handle: &ep->sq_dma, GFP_KERNEL); |
1776 | if (!ep->sq) { |
1777 | QEDI_WARN(&qedi->dbg_ctx, |
1778 | "Could not allocate send queue.\n" ); |
1779 | rval = -ENOMEM; |
1780 | goto out; |
1781 | } |
1782 | ep->sq_pbl = dma_alloc_coherent(dev: &qedi->pdev->dev, size: ep->sq_pbl_size, |
1783 | dma_handle: &ep->sq_pbl_dma, GFP_KERNEL); |
1784 | if (!ep->sq_pbl) { |
1785 | QEDI_WARN(&qedi->dbg_ctx, |
1786 | "Could not allocate send queue PBL.\n" ); |
1787 | rval = -ENOMEM; |
1788 | goto out_free_sq; |
1789 | } |
1790 | |
1791 | /* Create PBL */ |
1792 | num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; |
1793 | page = ep->sq_dma; |
1794 | pbl = (u32 *)ep->sq_pbl; |
1795 | |
1796 | while (num_pages--) { |
1797 | *pbl = (u32)page; |
1798 | pbl++; |
1799 | *pbl = (u32)((u64)page >> 32); |
1800 | pbl++; |
1801 | page += QEDI_PAGE_SIZE; |
1802 | } |
1803 | |
1804 | return rval; |
1805 | |
1806 | out_free_sq: |
1807 | dma_free_coherent(dev: &qedi->pdev->dev, size: ep->sq_mem_size, cpu_addr: ep->sq, |
1808 | dma_handle: ep->sq_dma); |
1809 | out: |
1810 | return rval; |
1811 | } |
1812 | |
1813 | void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) |
1814 | { |
1815 | if (ep->sq_pbl) |
1816 | dma_free_coherent(dev: &qedi->pdev->dev, size: ep->sq_pbl_size, cpu_addr: ep->sq_pbl, |
1817 | dma_handle: ep->sq_pbl_dma); |
1818 | if (ep->sq) |
1819 | dma_free_coherent(dev: &qedi->pdev->dev, size: ep->sq_mem_size, cpu_addr: ep->sq, |
1820 | dma_handle: ep->sq_dma); |
1821 | } |
1822 | |
1823 | int qedi_get_task_idx(struct qedi_ctx *qedi) |
1824 | { |
1825 | s16 tmp_idx; |
1826 | |
1827 | again: |
1828 | tmp_idx = find_first_zero_bit(addr: qedi->task_idx_map, |
1829 | MAX_ISCSI_TASK_ENTRIES); |
1830 | |
1831 | if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { |
1832 | QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n" ); |
1833 | tmp_idx = -1; |
1834 | goto err_idx; |
1835 | } |
1836 | |
1837 | if (test_and_set_bit(nr: tmp_idx, addr: qedi->task_idx_map)) |
1838 | goto again; |
1839 | |
1840 | err_idx: |
1841 | return tmp_idx; |
1842 | } |
1843 | |
1844 | void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) |
1845 | { |
1846 | if (!test_and_clear_bit(nr: idx, addr: qedi->task_idx_map)) |
1847 | QEDI_ERR(&qedi->dbg_ctx, |
1848 | "FW task context, already cleared, tid=0x%x\n" , idx); |
1849 | } |
1850 | |
1851 | void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, |
1852 | struct qedi_cmd *cmd) |
1853 | { |
1854 | qedi->itt_map[tid].itt = proto_itt; |
1855 | qedi->itt_map[tid].p_cmd = cmd; |
1856 | |
1857 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
1858 | "update itt map tid=0x%x, with proto itt=0x%x\n" , tid, |
1859 | qedi->itt_map[tid].itt); |
1860 | } |
1861 | |
1862 | void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) |
1863 | { |
1864 | u16 i; |
1865 | |
1866 | for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { |
1867 | if (qedi->itt_map[i].itt == itt) { |
1868 | *tid = i; |
1869 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
1870 | "Ref itt=0x%x, found at tid=0x%x\n" , |
1871 | itt, *tid); |
1872 | return; |
1873 | } |
1874 | } |
1875 | |
1876 | WARN_ON(1); |
1877 | } |
1878 | |
1879 | void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) |
1880 | { |
1881 | *proto_itt = qedi->itt_map[tid].itt; |
1882 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
1883 | "Get itt map tid [0x%x with proto itt[0x%x]" , |
1884 | tid, *proto_itt); |
1885 | } |
1886 | |
1887 | struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) |
1888 | { |
1889 | struct qedi_cmd *cmd = NULL; |
1890 | |
1891 | if (tid >= MAX_ISCSI_TASK_ENTRIES) |
1892 | return NULL; |
1893 | |
1894 | cmd = qedi->itt_map[tid].p_cmd; |
1895 | if (cmd->task_id != tid) |
1896 | return NULL; |
1897 | |
1898 | qedi->itt_map[tid].p_cmd = NULL; |
1899 | |
1900 | return cmd; |
1901 | } |
1902 | |
1903 | static int qedi_alloc_itt(struct qedi_ctx *qedi) |
1904 | { |
1905 | qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, |
1906 | size: sizeof(struct qedi_itt_map), GFP_KERNEL); |
1907 | if (!qedi->itt_map) { |
1908 | QEDI_ERR(&qedi->dbg_ctx, |
1909 | "Unable to allocate itt map array memory\n" ); |
1910 | return -ENOMEM; |
1911 | } |
1912 | return 0; |
1913 | } |
1914 | |
1915 | static void qedi_free_itt(struct qedi_ctx *qedi) |
1916 | { |
1917 | kfree(objp: qedi->itt_map); |
1918 | } |
1919 | |
1920 | static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { |
1921 | .rx_cb = qedi_ll2_rx, |
1922 | .tx_cb = NULL, |
1923 | }; |
1924 | |
1925 | static int qedi_percpu_io_thread(void *arg) |
1926 | { |
1927 | struct qedi_percpu_s *p = arg; |
1928 | struct qedi_work *work, *tmp; |
1929 | unsigned long flags; |
1930 | LIST_HEAD(work_list); |
1931 | |
1932 | set_user_nice(current, nice: -20); |
1933 | |
1934 | while (!kthread_should_stop()) { |
1935 | spin_lock_irqsave(&p->p_work_lock, flags); |
1936 | while (!list_empty(head: &p->work_list)) { |
1937 | list_splice_init(list: &p->work_list, head: &work_list); |
1938 | spin_unlock_irqrestore(lock: &p->p_work_lock, flags); |
1939 | |
1940 | list_for_each_entry_safe(work, tmp, &work_list, list) { |
1941 | list_del_init(entry: &work->list); |
1942 | qedi_fp_process_cqes(work); |
1943 | if (!work->is_solicited) |
1944 | kfree(objp: work); |
1945 | } |
1946 | cond_resched(); |
1947 | spin_lock_irqsave(&p->p_work_lock, flags); |
1948 | } |
1949 | set_current_state(TASK_INTERRUPTIBLE); |
1950 | spin_unlock_irqrestore(lock: &p->p_work_lock, flags); |
1951 | schedule(); |
1952 | } |
1953 | __set_current_state(TASK_RUNNING); |
1954 | |
1955 | return 0; |
1956 | } |
1957 | |
1958 | static int qedi_cpu_online(unsigned int cpu) |
1959 | { |
1960 | struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); |
1961 | struct task_struct *thread; |
1962 | |
1963 | thread = kthread_create_on_node(threadfn: qedi_percpu_io_thread, data: (void *)p, |
1964 | cpu_to_node(cpu), |
1965 | namefmt: "qedi_thread/%d" , cpu); |
1966 | if (IS_ERR(ptr: thread)) |
1967 | return PTR_ERR(ptr: thread); |
1968 | |
1969 | kthread_bind(k: thread, cpu); |
1970 | p->iothread = thread; |
1971 | wake_up_process(tsk: thread); |
1972 | return 0; |
1973 | } |
1974 | |
1975 | static int qedi_cpu_offline(unsigned int cpu) |
1976 | { |
1977 | struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); |
1978 | struct qedi_work *work, *tmp; |
1979 | struct task_struct *thread; |
1980 | unsigned long flags; |
1981 | |
1982 | spin_lock_irqsave(&p->p_work_lock, flags); |
1983 | thread = p->iothread; |
1984 | p->iothread = NULL; |
1985 | |
1986 | list_for_each_entry_safe(work, tmp, &p->work_list, list) { |
1987 | list_del_init(entry: &work->list); |
1988 | qedi_fp_process_cqes(work); |
1989 | if (!work->is_solicited) |
1990 | kfree(objp: work); |
1991 | } |
1992 | |
1993 | spin_unlock_irqrestore(lock: &p->p_work_lock, flags); |
1994 | if (thread) |
1995 | kthread_stop(k: thread); |
1996 | return 0; |
1997 | } |
1998 | |
1999 | void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) |
2000 | { |
2001 | struct qed_ll2_params params; |
2002 | |
2003 | qedi_recover_all_conns(qedi); |
2004 | |
2005 | qedi_ops->ll2->stop(qedi->cdev); |
2006 | qedi_ll2_free_skbs(qedi); |
2007 | |
2008 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n" , |
2009 | qedi->ll2_mtu, mtu); |
2010 | memset(¶ms, 0, sizeof(params)); |
2011 | qedi->ll2_mtu = mtu; |
2012 | params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; |
2013 | params.drop_ttl0_packets = 0; |
2014 | params.rx_vlan_stripping = 1; |
2015 | ether_addr_copy(dst: params.ll2_mac_address, src: qedi->dev_info.common.hw_mac); |
2016 | qedi_ops->ll2->start(qedi->cdev, ¶ms); |
2017 | } |
2018 | |
2019 | /* |
2020 | * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting |
2021 | * for gaps) for the matching absolute-pf-id of the QEDI device. |
2022 | */ |
2023 | static struct nvm_iscsi_block * |
2024 | qedi_get_nvram_block(struct qedi_ctx *qedi) |
2025 | { |
2026 | int i; |
2027 | u8 pf; |
2028 | u32 flags; |
2029 | struct nvm_iscsi_block *block; |
2030 | |
2031 | pf = qedi->dev_info.common.abs_pf_id; |
2032 | block = &qedi->iscsi_image->iscsi_cfg.block[0]; |
2033 | for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { |
2034 | flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> |
2035 | NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; |
2036 | if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | |
2037 | NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && |
2038 | (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) |
2039 | >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) |
2040 | return block; |
2041 | } |
2042 | return NULL; |
2043 | } |
2044 | |
2045 | static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) |
2046 | { |
2047 | struct qedi_ctx *qedi = data; |
2048 | struct nvm_iscsi_initiator *initiator; |
2049 | int rc = 1; |
2050 | u32 ipv6_en, dhcp_en, ip_len; |
2051 | struct nvm_iscsi_block *block; |
2052 | char *fmt, *ip, *sub, *gw; |
2053 | |
2054 | block = qedi_get_nvram_block(qedi); |
2055 | if (!block) |
2056 | return 0; |
2057 | |
2058 | initiator = &block->initiator; |
2059 | ipv6_en = block->generic.ctrl_flags & |
2060 | NVM_ISCSI_CFG_GEN_IPV6_ENABLED; |
2061 | dhcp_en = block->generic.ctrl_flags & |
2062 | NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; |
2063 | /* Static IP assignments. */ |
2064 | fmt = ipv6_en ? "%pI6\n" : "%pI4\n" ; |
2065 | ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; |
2066 | ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; |
2067 | sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : |
2068 | initiator->ipv4.subnet_mask.byte; |
2069 | gw = ipv6_en ? initiator->ipv6.gateway.byte : |
2070 | initiator->ipv4.gateway.byte; |
2071 | /* DHCP IP adjustments. */ |
2072 | fmt = dhcp_en ? "%s\n" : fmt; |
2073 | if (dhcp_en) { |
2074 | ip = ipv6_en ? "0::0" : "0.0.0.0" ; |
2075 | sub = ip; |
2076 | gw = ip; |
2077 | ip_len = ipv6_en ? 5 : 8; |
2078 | } |
2079 | |
2080 | switch (type) { |
2081 | case ISCSI_BOOT_ETH_IP_ADDR: |
2082 | rc = snprintf(buf, size: ip_len, fmt, ip); |
2083 | break; |
2084 | case ISCSI_BOOT_ETH_SUBNET_MASK: |
2085 | rc = snprintf(buf, size: ip_len, fmt, sub); |
2086 | break; |
2087 | case ISCSI_BOOT_ETH_GATEWAY: |
2088 | rc = snprintf(buf, size: ip_len, fmt, gw); |
2089 | break; |
2090 | case ISCSI_BOOT_ETH_FLAGS: |
2091 | rc = snprintf(buf, size: 3, fmt: "%d\n" , (char)SYSFS_FLAG_FW_SEL_BOOT); |
2092 | break; |
2093 | case ISCSI_BOOT_ETH_INDEX: |
2094 | rc = snprintf(buf, size: 3, fmt: "0\n" ); |
2095 | break; |
2096 | case ISCSI_BOOT_ETH_MAC: |
2097 | rc = sysfs_format_mac(buf, addr: qedi->mac, ETH_ALEN); |
2098 | break; |
2099 | case ISCSI_BOOT_ETH_VLAN: |
2100 | rc = snprintf(buf, size: 12, fmt: "%d\n" , |
2101 | GET_FIELD2(initiator->generic_cont0, |
2102 | NVM_ISCSI_CFG_INITIATOR_VLAN)); |
2103 | break; |
2104 | case ISCSI_BOOT_ETH_ORIGIN: |
2105 | if (dhcp_en) |
2106 | rc = snprintf(buf, size: 3, fmt: "3\n" ); |
2107 | break; |
2108 | default: |
2109 | rc = 0; |
2110 | break; |
2111 | } |
2112 | |
2113 | return rc; |
2114 | } |
2115 | |
2116 | static umode_t qedi_eth_get_attr_visibility(void *data, int type) |
2117 | { |
2118 | int rc = 1; |
2119 | |
2120 | switch (type) { |
2121 | case ISCSI_BOOT_ETH_FLAGS: |
2122 | case ISCSI_BOOT_ETH_MAC: |
2123 | case ISCSI_BOOT_ETH_INDEX: |
2124 | case ISCSI_BOOT_ETH_IP_ADDR: |
2125 | case ISCSI_BOOT_ETH_SUBNET_MASK: |
2126 | case ISCSI_BOOT_ETH_GATEWAY: |
2127 | case ISCSI_BOOT_ETH_ORIGIN: |
2128 | case ISCSI_BOOT_ETH_VLAN: |
2129 | rc = 0444; |
2130 | break; |
2131 | default: |
2132 | rc = 0; |
2133 | break; |
2134 | } |
2135 | return rc; |
2136 | } |
2137 | |
2138 | static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) |
2139 | { |
2140 | struct qedi_ctx *qedi = data; |
2141 | struct nvm_iscsi_initiator *initiator; |
2142 | int rc; |
2143 | struct nvm_iscsi_block *block; |
2144 | |
2145 | block = qedi_get_nvram_block(qedi); |
2146 | if (!block) |
2147 | return 0; |
2148 | |
2149 | initiator = &block->initiator; |
2150 | |
2151 | switch (type) { |
2152 | case ISCSI_BOOT_INI_INITIATOR_NAME: |
2153 | rc = sprintf(buf, fmt: "%.*s\n" , NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, |
2154 | initiator->initiator_name.byte); |
2155 | break; |
2156 | default: |
2157 | rc = 0; |
2158 | break; |
2159 | } |
2160 | return rc; |
2161 | } |
2162 | |
2163 | static umode_t qedi_ini_get_attr_visibility(void *data, int type) |
2164 | { |
2165 | int rc; |
2166 | |
2167 | switch (type) { |
2168 | case ISCSI_BOOT_INI_INITIATOR_NAME: |
2169 | rc = 0444; |
2170 | break; |
2171 | default: |
2172 | rc = 0; |
2173 | break; |
2174 | } |
2175 | return rc; |
2176 | } |
2177 | |
2178 | static ssize_t |
2179 | qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, |
2180 | char *buf, enum qedi_nvm_tgts idx) |
2181 | { |
2182 | int rc = 1; |
2183 | u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; |
2184 | struct nvm_iscsi_block *block; |
2185 | char *chap_name, *chap_secret; |
2186 | char *mchap_name, *mchap_secret; |
2187 | |
2188 | block = qedi_get_nvram_block(qedi); |
2189 | if (!block) |
2190 | goto exit_show_tgt_info; |
2191 | |
2192 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, |
2193 | "Port:%d, tgt_idx:%d\n" , |
2194 | GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); |
2195 | |
2196 | ctrl_flags = block->target[idx].ctrl_flags & |
2197 | NVM_ISCSI_CFG_TARGET_ENABLED; |
2198 | |
2199 | if (!ctrl_flags) { |
2200 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, |
2201 | "Target disabled\n" ); |
2202 | goto exit_show_tgt_info; |
2203 | } |
2204 | |
2205 | ipv6_en = block->generic.ctrl_flags & |
2206 | NVM_ISCSI_CFG_GEN_IPV6_ENABLED; |
2207 | ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; |
2208 | chap_en = block->generic.ctrl_flags & |
2209 | NVM_ISCSI_CFG_GEN_CHAP_ENABLED; |
2210 | chap_name = chap_en ? block->initiator.chap_name.byte : NULL; |
2211 | chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; |
2212 | |
2213 | mchap_en = block->generic.ctrl_flags & |
2214 | NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; |
2215 | mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; |
2216 | mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; |
2217 | |
2218 | switch (type) { |
2219 | case ISCSI_BOOT_TGT_NAME: |
2220 | rc = sprintf(buf, fmt: "%.*s\n" , NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, |
2221 | block->target[idx].target_name.byte); |
2222 | break; |
2223 | case ISCSI_BOOT_TGT_IP_ADDR: |
2224 | if (ipv6_en) |
2225 | rc = snprintf(buf, size: ip_len, fmt: "%pI6\n" , |
2226 | block->target[idx].ipv6_addr.byte); |
2227 | else |
2228 | rc = snprintf(buf, size: ip_len, fmt: "%pI4\n" , |
2229 | block->target[idx].ipv4_addr.byte); |
2230 | break; |
2231 | case ISCSI_BOOT_TGT_PORT: |
2232 | rc = snprintf(buf, size: 12, fmt: "%d\n" , |
2233 | GET_FIELD2(block->target[idx].generic_cont0, |
2234 | NVM_ISCSI_CFG_TARGET_TCP_PORT)); |
2235 | break; |
2236 | case ISCSI_BOOT_TGT_LUN: |
2237 | rc = snprintf(buf, size: 22, fmt: "%.*d\n" , |
2238 | block->target[idx].lun.value[1], |
2239 | block->target[idx].lun.value[0]); |
2240 | break; |
2241 | case ISCSI_BOOT_TGT_CHAP_NAME: |
2242 | rc = sprintf(buf, fmt: "%.*s\n" , NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, |
2243 | chap_name); |
2244 | break; |
2245 | case ISCSI_BOOT_TGT_CHAP_SECRET: |
2246 | rc = sprintf(buf, fmt: "%.*s\n" , NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, |
2247 | chap_secret); |
2248 | break; |
2249 | case ISCSI_BOOT_TGT_REV_CHAP_NAME: |
2250 | rc = sprintf(buf, fmt: "%.*s\n" , NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, |
2251 | mchap_name); |
2252 | break; |
2253 | case ISCSI_BOOT_TGT_REV_CHAP_SECRET: |
2254 | rc = sprintf(buf, fmt: "%.*s\n" , NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, |
2255 | mchap_secret); |
2256 | break; |
2257 | case ISCSI_BOOT_TGT_FLAGS: |
2258 | rc = snprintf(buf, size: 3, fmt: "%d\n" , (char)SYSFS_FLAG_FW_SEL_BOOT); |
2259 | break; |
2260 | case ISCSI_BOOT_TGT_NIC_ASSOC: |
2261 | rc = snprintf(buf, size: 3, fmt: "0\n" ); |
2262 | break; |
2263 | default: |
2264 | rc = 0; |
2265 | break; |
2266 | } |
2267 | |
2268 | exit_show_tgt_info: |
2269 | return rc; |
2270 | } |
2271 | |
2272 | static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) |
2273 | { |
2274 | struct qedi_ctx *qedi = data; |
2275 | |
2276 | return qedi_show_boot_tgt_info(qedi, type, buf, idx: QEDI_NVM_TGT_PRI); |
2277 | } |
2278 | |
2279 | static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) |
2280 | { |
2281 | struct qedi_ctx *qedi = data; |
2282 | |
2283 | return qedi_show_boot_tgt_info(qedi, type, buf, idx: QEDI_NVM_TGT_SEC); |
2284 | } |
2285 | |
2286 | static umode_t qedi_tgt_get_attr_visibility(void *data, int type) |
2287 | { |
2288 | int rc; |
2289 | |
2290 | switch (type) { |
2291 | case ISCSI_BOOT_TGT_NAME: |
2292 | case ISCSI_BOOT_TGT_IP_ADDR: |
2293 | case ISCSI_BOOT_TGT_PORT: |
2294 | case ISCSI_BOOT_TGT_LUN: |
2295 | case ISCSI_BOOT_TGT_CHAP_NAME: |
2296 | case ISCSI_BOOT_TGT_CHAP_SECRET: |
2297 | case ISCSI_BOOT_TGT_REV_CHAP_NAME: |
2298 | case ISCSI_BOOT_TGT_REV_CHAP_SECRET: |
2299 | case ISCSI_BOOT_TGT_NIC_ASSOC: |
2300 | case ISCSI_BOOT_TGT_FLAGS: |
2301 | rc = 0444; |
2302 | break; |
2303 | default: |
2304 | rc = 0; |
2305 | break; |
2306 | } |
2307 | return rc; |
2308 | } |
2309 | |
2310 | static void qedi_boot_release(void *data) |
2311 | { |
2312 | struct qedi_ctx *qedi = data; |
2313 | |
2314 | scsi_host_put(t: qedi->shost); |
2315 | } |
2316 | |
2317 | static int qedi_get_boot_info(struct qedi_ctx *qedi) |
2318 | { |
2319 | int ret = 1; |
2320 | |
2321 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
2322 | "Get NVM iSCSI CFG image\n" ); |
2323 | ret = qedi_ops->common->nvm_get_image(qedi->cdev, |
2324 | QED_NVM_IMAGE_ISCSI_CFG, |
2325 | (char *)qedi->iscsi_image, |
2326 | sizeof(struct qedi_nvm_iscsi_image)); |
2327 | if (ret) |
2328 | QEDI_ERR(&qedi->dbg_ctx, |
2329 | "Could not get NVM image. ret = %d\n" , ret); |
2330 | |
2331 | return ret; |
2332 | } |
2333 | |
2334 | static int qedi_setup_boot_info(struct qedi_ctx *qedi) |
2335 | { |
2336 | struct iscsi_boot_kobj *boot_kobj; |
2337 | |
2338 | if (qedi_get_boot_info(qedi)) |
2339 | return -EPERM; |
2340 | |
2341 | qedi->boot_kset = iscsi_boot_create_host_kset(hostno: qedi->shost->host_no); |
2342 | if (!qedi->boot_kset) |
2343 | goto kset_free; |
2344 | |
2345 | if (!scsi_host_get(qedi->shost)) |
2346 | goto kset_free; |
2347 | |
2348 | boot_kobj = iscsi_boot_create_target(boot_kset: qedi->boot_kset, index: 0, data: qedi, |
2349 | show: qedi_show_boot_tgt_pri_info, |
2350 | is_visible: qedi_tgt_get_attr_visibility, |
2351 | release: qedi_boot_release); |
2352 | if (!boot_kobj) |
2353 | goto put_host; |
2354 | |
2355 | if (!scsi_host_get(qedi->shost)) |
2356 | goto kset_free; |
2357 | |
2358 | boot_kobj = iscsi_boot_create_target(boot_kset: qedi->boot_kset, index: 1, data: qedi, |
2359 | show: qedi_show_boot_tgt_sec_info, |
2360 | is_visible: qedi_tgt_get_attr_visibility, |
2361 | release: qedi_boot_release); |
2362 | if (!boot_kobj) |
2363 | goto put_host; |
2364 | |
2365 | if (!scsi_host_get(qedi->shost)) |
2366 | goto kset_free; |
2367 | |
2368 | boot_kobj = iscsi_boot_create_initiator(boot_kset: qedi->boot_kset, index: 0, data: qedi, |
2369 | show: qedi_show_boot_ini_info, |
2370 | is_visible: qedi_ini_get_attr_visibility, |
2371 | release: qedi_boot_release); |
2372 | if (!boot_kobj) |
2373 | goto put_host; |
2374 | |
2375 | if (!scsi_host_get(qedi->shost)) |
2376 | goto kset_free; |
2377 | |
2378 | boot_kobj = iscsi_boot_create_ethernet(boot_kset: qedi->boot_kset, index: 0, data: qedi, |
2379 | show: qedi_show_boot_eth_info, |
2380 | is_visible: qedi_eth_get_attr_visibility, |
2381 | release: qedi_boot_release); |
2382 | if (!boot_kobj) |
2383 | goto put_host; |
2384 | |
2385 | return 0; |
2386 | |
2387 | put_host: |
2388 | scsi_host_put(t: qedi->shost); |
2389 | kset_free: |
2390 | iscsi_boot_destroy_kset(boot_kset: qedi->boot_kset); |
2391 | return -ENOMEM; |
2392 | } |
2393 | |
2394 | static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev, |
2395 | pci_channel_state_t state) |
2396 | { |
2397 | struct qedi_ctx *qedi = pci_get_drvdata(pdev); |
2398 | |
2399 | QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n" , |
2400 | __func__, state); |
2401 | |
2402 | if (test_and_set_bit(QEDI_IN_RECOVERY, addr: &qedi->flags)) { |
2403 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
2404 | "Recovery already in progress.\n" ); |
2405 | return PCI_ERS_RESULT_NONE; |
2406 | } |
2407 | |
2408 | qedi_ops->common->recovery_process(qedi->cdev); |
2409 | |
2410 | return PCI_ERS_RESULT_CAN_RECOVER; |
2411 | } |
2412 | |
2413 | static void __qedi_remove(struct pci_dev *pdev, int mode) |
2414 | { |
2415 | struct qedi_ctx *qedi = pci_get_drvdata(pdev); |
2416 | int rval; |
2417 | u16 retry = 10; |
2418 | |
2419 | if (mode == QEDI_MODE_NORMAL) |
2420 | iscsi_host_remove(shost: qedi->shost, is_shutdown: false); |
2421 | else if (mode == QEDI_MODE_SHUTDOWN) |
2422 | iscsi_host_remove(shost: qedi->shost, is_shutdown: true); |
2423 | |
2424 | if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { |
2425 | if (qedi->tmf_thread) { |
2426 | destroy_workqueue(wq: qedi->tmf_thread); |
2427 | qedi->tmf_thread = NULL; |
2428 | } |
2429 | |
2430 | if (qedi->offload_thread) { |
2431 | destroy_workqueue(wq: qedi->offload_thread); |
2432 | qedi->offload_thread = NULL; |
2433 | } |
2434 | } |
2435 | |
2436 | #ifdef CONFIG_DEBUG_FS |
2437 | qedi_dbg_host_exit(qedi: &qedi->dbg_ctx); |
2438 | #endif |
2439 | if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) |
2440 | qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); |
2441 | |
2442 | qedi_sync_free_irqs(qedi); |
2443 | |
2444 | if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { |
2445 | while (retry--) { |
2446 | rval = qedi_ops->stop(qedi->cdev); |
2447 | if (rval < 0) |
2448 | msleep(msecs: 1000); |
2449 | else |
2450 | break; |
2451 | } |
2452 | qedi_ops->ll2->stop(qedi->cdev); |
2453 | } |
2454 | |
2455 | cancel_delayed_work_sync(dwork: &qedi->recovery_work); |
2456 | cancel_delayed_work_sync(dwork: &qedi->board_disable_work); |
2457 | |
2458 | qedi_free_iscsi_pf_param(qedi); |
2459 | |
2460 | rval = qedi_ops->common->update_drv_state(qedi->cdev, false); |
2461 | if (rval) |
2462 | QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n" ); |
2463 | |
2464 | if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { |
2465 | qedi_ops->common->slowpath_stop(qedi->cdev); |
2466 | qedi_ops->common->remove(qedi->cdev); |
2467 | } |
2468 | |
2469 | qedi_destroy_fp(qedi); |
2470 | |
2471 | if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { |
2472 | qedi_release_cid_que(qedi); |
2473 | qedi_cm_free_mem(qedi); |
2474 | qedi_free_uio(udev: qedi->udev); |
2475 | qedi_free_itt(qedi); |
2476 | |
2477 | if (qedi->ll2_recv_thread) { |
2478 | kthread_stop(k: qedi->ll2_recv_thread); |
2479 | qedi->ll2_recv_thread = NULL; |
2480 | } |
2481 | qedi_ll2_free_skbs(qedi); |
2482 | |
2483 | if (qedi->boot_kset) |
2484 | iscsi_boot_destroy_kset(boot_kset: qedi->boot_kset); |
2485 | |
2486 | iscsi_host_free(shost: qedi->shost); |
2487 | } |
2488 | } |
2489 | |
2490 | static void qedi_board_disable_work(struct work_struct *work) |
2491 | { |
2492 | struct qedi_ctx *qedi = |
2493 | container_of(work, struct qedi_ctx, |
2494 | board_disable_work.work); |
2495 | |
2496 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
2497 | "Fan failure, Unloading firmware context.\n" ); |
2498 | |
2499 | if (test_and_set_bit(QEDI_IN_SHUTDOWN, addr: &qedi->flags)) |
2500 | return; |
2501 | |
2502 | __qedi_remove(pdev: qedi->pdev, QEDI_MODE_NORMAL); |
2503 | } |
2504 | |
2505 | static void qedi_shutdown(struct pci_dev *pdev) |
2506 | { |
2507 | struct qedi_ctx *qedi = pci_get_drvdata(pdev); |
2508 | |
2509 | QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n" , __func__); |
2510 | if (test_and_set_bit(QEDI_IN_SHUTDOWN, addr: &qedi->flags)) |
2511 | return; |
2512 | __qedi_remove(pdev, QEDI_MODE_SHUTDOWN); |
2513 | } |
2514 | |
2515 | static int qedi_suspend(struct pci_dev *pdev, pm_message_t state) |
2516 | { |
2517 | struct qedi_ctx *qedi; |
2518 | |
2519 | if (!pdev) { |
2520 | QEDI_ERR(NULL, "pdev is NULL.\n" ); |
2521 | return -ENODEV; |
2522 | } |
2523 | |
2524 | qedi = pci_get_drvdata(pdev); |
2525 | |
2526 | QEDI_ERR(&qedi->dbg_ctx, "%s: Device does not support suspend operation\n" , __func__); |
2527 | |
2528 | return -EPERM; |
2529 | } |
2530 | |
2531 | static int __qedi_probe(struct pci_dev *pdev, int mode) |
2532 | { |
2533 | struct qedi_ctx *qedi; |
2534 | struct qed_ll2_params params; |
2535 | u8 dp_level = 0; |
2536 | bool is_vf = false; |
2537 | char host_buf[16]; |
2538 | struct qed_link_params link_params; |
2539 | struct qed_slowpath_params sp_params; |
2540 | struct qed_probe_params qed_params; |
2541 | void *task_start, *task_end; |
2542 | int rc; |
2543 | u16 retry = 10; |
2544 | |
2545 | if (mode != QEDI_MODE_RECOVERY) { |
2546 | qedi = qedi_host_alloc(pdev); |
2547 | if (!qedi) { |
2548 | rc = -ENOMEM; |
2549 | goto exit_probe; |
2550 | } |
2551 | } else { |
2552 | qedi = pci_get_drvdata(pdev); |
2553 | } |
2554 | |
2555 | retry_probe: |
2556 | if (mode == QEDI_MODE_RECOVERY) |
2557 | msleep(msecs: 2000); |
2558 | |
2559 | memset(&qed_params, 0, sizeof(qed_params)); |
2560 | qed_params.protocol = QED_PROTOCOL_ISCSI; |
2561 | qed_params.dp_module = qedi_qed_debug; |
2562 | qed_params.dp_level = dp_level; |
2563 | qed_params.is_vf = is_vf; |
2564 | qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); |
2565 | if (!qedi->cdev) { |
2566 | if (mode == QEDI_MODE_RECOVERY && retry) { |
2567 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
2568 | "Retry %d initialize hardware\n" , retry); |
2569 | retry--; |
2570 | goto retry_probe; |
2571 | } |
2572 | |
2573 | rc = -ENODEV; |
2574 | QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n" ); |
2575 | goto free_host; |
2576 | } |
2577 | |
2578 | set_bit(QEDI_ERR_ATTN_CLR_EN, addr: &qedi->qedi_err_flags); |
2579 | set_bit(QEDI_ERR_IS_RECOVERABLE, addr: &qedi->qedi_err_flags); |
2580 | atomic_set(v: &qedi->link_state, QEDI_LINK_DOWN); |
2581 | |
2582 | rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); |
2583 | if (rc) |
2584 | goto free_host; |
2585 | |
2586 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
2587 | "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n" , |
2588 | qedi->dev_info.common.num_hwfns, |
2589 | qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); |
2590 | |
2591 | rc = qedi_set_iscsi_pf_param(qedi); |
2592 | if (rc) { |
2593 | rc = -ENOMEM; |
2594 | QEDI_ERR(&qedi->dbg_ctx, |
2595 | "Set iSCSI pf param fail\n" ); |
2596 | goto free_host; |
2597 | } |
2598 | |
2599 | qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); |
2600 | |
2601 | rc = qedi_prepare_fp(qedi); |
2602 | if (rc) { |
2603 | QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n" ); |
2604 | goto free_pf_params; |
2605 | } |
2606 | |
2607 | /* Start the Slowpath-process */ |
2608 | memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); |
2609 | sp_params.int_mode = QED_INT_MODE_MSIX; |
2610 | sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; |
2611 | sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; |
2612 | sp_params.drv_rev = QEDI_DRIVER_REV_VER; |
2613 | sp_params.drv_eng = QEDI_DRIVER_ENG_VER; |
2614 | strscpy(p: sp_params.name, q: "qedi iSCSI" , QED_DRV_VER_STR_SIZE); |
2615 | rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); |
2616 | if (rc) { |
2617 | QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n" ); |
2618 | goto stop_hw; |
2619 | } |
2620 | |
2621 | /* update_pf_params needs to be called before and after slowpath |
2622 | * start |
2623 | */ |
2624 | qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); |
2625 | |
2626 | rc = qedi_setup_int(qedi); |
2627 | if (rc) |
2628 | goto stop_iscsi_func; |
2629 | |
2630 | qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); |
2631 | |
2632 | /* Learn information crucial for qedi to progress */ |
2633 | rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); |
2634 | if (rc) |
2635 | goto stop_iscsi_func; |
2636 | |
2637 | /* Record BDQ producer doorbell addresses */ |
2638 | qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; |
2639 | qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; |
2640 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
2641 | "BDQ primary_prod=%p secondary_prod=%p.\n" , |
2642 | qedi->bdq_primary_prod, |
2643 | qedi->bdq_secondary_prod); |
2644 | |
2645 | /* |
2646 | * We need to write the number of BDs in the BDQ we've preallocated so |
2647 | * the f/w will do a prefetch and we'll get an unsolicited CQE when a |
2648 | * packet arrives. |
2649 | */ |
2650 | qedi->bdq_prod_idx = QEDI_BDQ_NUM; |
2651 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
2652 | "Writing %d to primary and secondary BDQ doorbell registers.\n" , |
2653 | qedi->bdq_prod_idx); |
2654 | writew(val: qedi->bdq_prod_idx, addr: qedi->bdq_primary_prod); |
2655 | readw(addr: qedi->bdq_primary_prod); |
2656 | writew(val: qedi->bdq_prod_idx, addr: qedi->bdq_secondary_prod); |
2657 | readw(addr: qedi->bdq_secondary_prod); |
2658 | |
2659 | ether_addr_copy(dst: qedi->mac, src: qedi->dev_info.common.hw_mac); |
2660 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n" , |
2661 | qedi->mac); |
2662 | |
2663 | snprintf(buf: host_buf, size: sizeof(host_buf), fmt: "host_%d" , qedi->shost->host_no); |
2664 | qedi_ops->common->set_name(qedi->cdev, host_buf); |
2665 | |
2666 | qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); |
2667 | |
2668 | memset(¶ms, 0, sizeof(params)); |
2669 | params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; |
2670 | qedi->ll2_mtu = DEF_PATH_MTU; |
2671 | params.drop_ttl0_packets = 0; |
2672 | params.rx_vlan_stripping = 1; |
2673 | ether_addr_copy(dst: params.ll2_mac_address, src: qedi->dev_info.common.hw_mac); |
2674 | |
2675 | if (mode != QEDI_MODE_RECOVERY) { |
2676 | /* set up rx path */ |
2677 | INIT_LIST_HEAD(list: &qedi->ll2_skb_list); |
2678 | spin_lock_init(&qedi->ll2_lock); |
2679 | /* start qedi context */ |
2680 | spin_lock_init(&qedi->hba_lock); |
2681 | spin_lock_init(&qedi->task_idx_lock); |
2682 | mutex_init(&qedi->stats_lock); |
2683 | } |
2684 | qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); |
2685 | qedi_ops->ll2->start(qedi->cdev, ¶ms); |
2686 | |
2687 | if (mode != QEDI_MODE_RECOVERY) { |
2688 | qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, |
2689 | (void *)qedi, |
2690 | "qedi_ll2_thread" ); |
2691 | } |
2692 | |
2693 | rc = qedi_ops->start(qedi->cdev, &qedi->tasks, |
2694 | qedi, qedi_iscsi_event_cb); |
2695 | if (rc) { |
2696 | rc = -ENODEV; |
2697 | QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n" ); |
2698 | goto stop_slowpath; |
2699 | } |
2700 | |
2701 | task_start = qedi_get_task_mem(info: &qedi->tasks, tid: 0); |
2702 | task_end = qedi_get_task_mem(info: &qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); |
2703 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
2704 | "Task context start=%p, end=%p block_size=%u.\n" , |
2705 | task_start, task_end, qedi->tasks.size); |
2706 | |
2707 | memset(&link_params, 0, sizeof(link_params)); |
2708 | link_params.link_up = true; |
2709 | rc = qedi_ops->common->set_link(qedi->cdev, &link_params); |
2710 | if (rc) { |
2711 | QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n" ); |
2712 | atomic_set(v: &qedi->link_state, QEDI_LINK_DOWN); |
2713 | } |
2714 | |
2715 | #ifdef CONFIG_DEBUG_FS |
2716 | qedi_dbg_host_init(qedi: &qedi->dbg_ctx, dops: qedi_debugfs_ops, |
2717 | fops: qedi_dbg_fops); |
2718 | #endif |
2719 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
2720 | "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n" , |
2721 | QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, |
2722 | FW_REVISION_VERSION, FW_ENGINEERING_VERSION); |
2723 | |
2724 | if (mode == QEDI_MODE_NORMAL) { |
2725 | if (iscsi_host_add(shost: qedi->shost, pdev: &pdev->dev)) { |
2726 | QEDI_ERR(&qedi->dbg_ctx, |
2727 | "Could not add iscsi host\n" ); |
2728 | rc = -ENOMEM; |
2729 | goto remove_host; |
2730 | } |
2731 | |
2732 | /* Allocate uio buffers */ |
2733 | rc = qedi_alloc_uio_rings(qedi); |
2734 | if (rc) { |
2735 | QEDI_ERR(&qedi->dbg_ctx, |
2736 | "UIO alloc ring failed err=%d\n" , rc); |
2737 | goto remove_host; |
2738 | } |
2739 | |
2740 | rc = qedi_init_uio(qedi); |
2741 | if (rc) { |
2742 | QEDI_ERR(&qedi->dbg_ctx, |
2743 | "UIO init failed, err=%d\n" , rc); |
2744 | goto free_uio; |
2745 | } |
2746 | |
2747 | /* host the array on iscsi_conn */ |
2748 | rc = qedi_setup_cid_que(qedi); |
2749 | if (rc) { |
2750 | QEDI_ERR(&qedi->dbg_ctx, |
2751 | "Could not setup cid que\n" ); |
2752 | goto free_uio; |
2753 | } |
2754 | |
2755 | rc = qedi_cm_alloc_mem(qedi); |
2756 | if (rc) { |
2757 | QEDI_ERR(&qedi->dbg_ctx, |
2758 | "Could not alloc cm memory\n" ); |
2759 | goto free_cid_que; |
2760 | } |
2761 | |
2762 | rc = qedi_alloc_itt(qedi); |
2763 | if (rc) { |
2764 | QEDI_ERR(&qedi->dbg_ctx, |
2765 | "Could not alloc itt memory\n" ); |
2766 | goto free_cid_que; |
2767 | } |
2768 | |
2769 | sprintf(buf: host_buf, fmt: "host_%d" , qedi->shost->host_no); |
2770 | qedi->tmf_thread = create_singlethread_workqueue(host_buf); |
2771 | if (!qedi->tmf_thread) { |
2772 | QEDI_ERR(&qedi->dbg_ctx, |
2773 | "Unable to start tmf thread!\n" ); |
2774 | rc = -ENODEV; |
2775 | goto free_cid_que; |
2776 | } |
2777 | |
2778 | sprintf(buf: host_buf, fmt: "qedi_ofld%d" , qedi->shost->host_no); |
2779 | qedi->offload_thread = create_workqueue(host_buf); |
2780 | if (!qedi->offload_thread) { |
2781 | QEDI_ERR(&qedi->dbg_ctx, |
2782 | "Unable to start offload thread!\n" ); |
2783 | rc = -ENODEV; |
2784 | goto free_tmf_thread; |
2785 | } |
2786 | |
2787 | INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler); |
2788 | INIT_DELAYED_WORK(&qedi->board_disable_work, |
2789 | qedi_board_disable_work); |
2790 | |
2791 | /* F/w needs 1st task context memory entry for performance */ |
2792 | set_bit(QEDI_RESERVE_TASK_ID, addr: qedi->task_idx_map); |
2793 | atomic_set(v: &qedi->num_offloads, i: 0); |
2794 | |
2795 | if (qedi_setup_boot_info(qedi)) |
2796 | QEDI_ERR(&qedi->dbg_ctx, |
2797 | "No iSCSI boot target configured\n" ); |
2798 | |
2799 | rc = qedi_ops->common->update_drv_state(qedi->cdev, true); |
2800 | if (rc) |
2801 | QEDI_ERR(&qedi->dbg_ctx, |
2802 | "Failed to send drv state to MFW\n" ); |
2803 | |
2804 | } |
2805 | |
2806 | return 0; |
2807 | |
2808 | free_tmf_thread: |
2809 | destroy_workqueue(wq: qedi->tmf_thread); |
2810 | free_cid_que: |
2811 | qedi_release_cid_que(qedi); |
2812 | free_uio: |
2813 | qedi_free_uio(udev: qedi->udev); |
2814 | remove_host: |
2815 | #ifdef CONFIG_DEBUG_FS |
2816 | qedi_dbg_host_exit(qedi: &qedi->dbg_ctx); |
2817 | #endif |
2818 | iscsi_host_remove(shost: qedi->shost, is_shutdown: false); |
2819 | stop_iscsi_func: |
2820 | qedi_ops->stop(qedi->cdev); |
2821 | stop_slowpath: |
2822 | qedi_ops->common->slowpath_stop(qedi->cdev); |
2823 | stop_hw: |
2824 | qedi_ops->common->remove(qedi->cdev); |
2825 | free_pf_params: |
2826 | qedi_free_iscsi_pf_param(qedi); |
2827 | free_host: |
2828 | iscsi_host_free(shost: qedi->shost); |
2829 | exit_probe: |
2830 | return rc; |
2831 | } |
2832 | |
2833 | static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session) |
2834 | { |
2835 | struct iscsi_session *session = cls_session->dd_data; |
2836 | struct iscsi_conn *conn = session->leadconn; |
2837 | struct qedi_conn *qedi_conn = conn->dd_data; |
2838 | |
2839 | iscsi_conn_failure(conn: qedi_conn->cls_conn->dd_data, err: ISCSI_ERR_CONN_FAILED); |
2840 | } |
2841 | |
2842 | static void qedi_recovery_handler(struct work_struct *work) |
2843 | { |
2844 | struct qedi_ctx *qedi = |
2845 | container_of(work, struct qedi_ctx, recovery_work.work); |
2846 | |
2847 | iscsi_host_for_each_session(shost: qedi->shost, fn: qedi_mark_conn_recovery); |
2848 | |
2849 | /* Call common_ops->recovery_prolog to allow the MFW to quiesce |
2850 | * any PCI transactions. |
2851 | */ |
2852 | qedi_ops->common->recovery_prolog(qedi->cdev); |
2853 | |
2854 | __qedi_remove(pdev: qedi->pdev, QEDI_MODE_RECOVERY); |
2855 | __qedi_probe(pdev: qedi->pdev, QEDI_MODE_RECOVERY); |
2856 | clear_bit(QEDI_IN_RECOVERY, addr: &qedi->flags); |
2857 | } |
2858 | |
2859 | static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
2860 | { |
2861 | return __qedi_probe(pdev, QEDI_MODE_NORMAL); |
2862 | } |
2863 | |
2864 | static void qedi_remove(struct pci_dev *pdev) |
2865 | { |
2866 | __qedi_remove(pdev, QEDI_MODE_NORMAL); |
2867 | } |
2868 | |
2869 | static struct pci_device_id qedi_pci_tbl[] = { |
2870 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, |
2871 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, |
2872 | { 0 }, |
2873 | }; |
2874 | MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); |
2875 | |
2876 | static enum cpuhp_state qedi_cpuhp_state; |
2877 | |
2878 | static struct pci_error_handlers qedi_err_handler = { |
2879 | .error_detected = qedi_io_error_detected, |
2880 | }; |
2881 | |
2882 | static struct pci_driver qedi_pci_driver = { |
2883 | .name = QEDI_MODULE_NAME, |
2884 | .id_table = qedi_pci_tbl, |
2885 | .probe = qedi_probe, |
2886 | .remove = qedi_remove, |
2887 | .shutdown = qedi_shutdown, |
2888 | .err_handler = &qedi_err_handler, |
2889 | .suspend = qedi_suspend, |
2890 | }; |
2891 | |
2892 | static int __init qedi_init(void) |
2893 | { |
2894 | struct qedi_percpu_s *p; |
2895 | int cpu, rc = 0; |
2896 | |
2897 | qedi_ops = qed_get_iscsi_ops(); |
2898 | if (!qedi_ops) { |
2899 | QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n" ); |
2900 | return -EINVAL; |
2901 | } |
2902 | |
2903 | #ifdef CONFIG_DEBUG_FS |
2904 | qedi_dbg_init(drv_name: "qedi" ); |
2905 | #endif |
2906 | |
2907 | qedi_scsi_transport = iscsi_register_transport(tt: &qedi_iscsi_transport); |
2908 | if (!qedi_scsi_transport) { |
2909 | QEDI_ERR(NULL, "Could not register qedi transport" ); |
2910 | rc = -ENOMEM; |
2911 | goto exit_qedi_init_1; |
2912 | } |
2913 | |
2914 | for_each_possible_cpu(cpu) { |
2915 | p = &per_cpu(qedi_percpu, cpu); |
2916 | INIT_LIST_HEAD(list: &p->work_list); |
2917 | spin_lock_init(&p->p_work_lock); |
2918 | p->iothread = NULL; |
2919 | } |
2920 | |
2921 | rc = cpuhp_setup_state(state: CPUHP_AP_ONLINE_DYN, name: "scsi/qedi:online" , |
2922 | startup: qedi_cpu_online, teardown: qedi_cpu_offline); |
2923 | if (rc < 0) |
2924 | goto exit_qedi_init_2; |
2925 | qedi_cpuhp_state = rc; |
2926 | |
2927 | rc = pci_register_driver(&qedi_pci_driver); |
2928 | if (rc) { |
2929 | QEDI_ERR(NULL, "Failed to register driver\n" ); |
2930 | goto exit_qedi_hp; |
2931 | } |
2932 | |
2933 | return 0; |
2934 | |
2935 | exit_qedi_hp: |
2936 | cpuhp_remove_state(state: qedi_cpuhp_state); |
2937 | exit_qedi_init_2: |
2938 | iscsi_unregister_transport(tt: &qedi_iscsi_transport); |
2939 | exit_qedi_init_1: |
2940 | #ifdef CONFIG_DEBUG_FS |
2941 | qedi_dbg_exit(); |
2942 | #endif |
2943 | qed_put_iscsi_ops(); |
2944 | return rc; |
2945 | } |
2946 | |
2947 | static void __exit qedi_cleanup(void) |
2948 | { |
2949 | pci_unregister_driver(dev: &qedi_pci_driver); |
2950 | cpuhp_remove_state(state: qedi_cpuhp_state); |
2951 | iscsi_unregister_transport(tt: &qedi_iscsi_transport); |
2952 | |
2953 | #ifdef CONFIG_DEBUG_FS |
2954 | qedi_dbg_exit(); |
2955 | #endif |
2956 | qed_put_iscsi_ops(); |
2957 | } |
2958 | |
2959 | MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module" ); |
2960 | MODULE_LICENSE("GPL" ); |
2961 | MODULE_AUTHOR("QLogic Corporation" ); |
2962 | MODULE_VERSION(QEDI_MODULE_VERSION); |
2963 | module_init(qedi_init); |
2964 | module_exit(qedi_cleanup); |
2965 | |