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ace7f46b MR |
1 | /* |
2 | * QLogic iSCSI Offload Driver | |
3 | * Copyright (c) 2016 Cavium Inc. | |
4 | * | |
5 | * This software is available under the terms of the GNU General Public License | |
6 | * (GPL) Version 2, available from the file COPYING in the main directory of | |
7 | * this source tree. | |
8 | */ | |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/pci.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/if_arp.h> | |
14 | #include <scsi/iscsi_if.h> | |
15 | #include <linux/inet.h> | |
16 | #include <net/arp.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/kthread.h> | |
19 | #include <linux/mm.h> | |
20 | #include <linux/if_vlan.h> | |
21 | #include <linux/cpu.h> | |
c57ec8fb | 22 | #include <linux/iscsi_boot_sysfs.h> |
ace7f46b MR |
23 | |
24 | #include <scsi/scsi_cmnd.h> | |
25 | #include <scsi/scsi_device.h> | |
26 | #include <scsi/scsi_eh.h> | |
27 | #include <scsi/scsi_host.h> | |
28 | #include <scsi/scsi.h> | |
29 | ||
30 | #include "qedi.h" | |
31 | #include "qedi_gbl.h" | |
32 | #include "qedi_iscsi.h" | |
33 | ||
34 | static uint qedi_fw_debug; | |
35 | module_param(qedi_fw_debug, uint, 0644); | |
36 | MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); | |
37 | ||
38 | uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; | |
39 | module_param(qedi_dbg_log, uint, 0644); | |
40 | MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); | |
41 | ||
42 | uint qedi_io_tracing; | |
43 | module_param(qedi_io_tracing, uint, 0644); | |
44 | MODULE_PARM_DESC(qedi_io_tracing, | |
45 | " Enable logging of SCSI requests/completions into trace buffer. (default off)."); | |
46 | ||
47 | const struct qed_iscsi_ops *qedi_ops; | |
48 | static struct scsi_transport_template *qedi_scsi_transport; | |
49 | static struct pci_driver qedi_pci_driver; | |
50 | static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); | |
51 | static LIST_HEAD(qedi_udev_list); | |
52 | /* Static function declaration */ | |
53 | static int qedi_alloc_global_queues(struct qedi_ctx *qedi); | |
54 | static void qedi_free_global_queues(struct qedi_ctx *qedi); | |
55 | static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); | |
56 | static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); | |
57 | static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); | |
58 | ||
59 | static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) | |
60 | { | |
61 | struct qedi_ctx *qedi; | |
62 | struct qedi_endpoint *qedi_ep; | |
63 | struct async_data *data; | |
64 | int rval = 0; | |
65 | ||
66 | if (!context || !fw_handle) { | |
67 | QEDI_ERR(NULL, "Recv event with ctx NULL\n"); | |
68 | return -EINVAL; | |
69 | } | |
70 | ||
71 | qedi = (struct qedi_ctx *)context; | |
72 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
73 | "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); | |
74 | ||
75 | data = (struct async_data *)fw_handle; | |
76 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
77 | "cid=0x%x tid=0x%x err-code=0x%x fw-dbg-param=0x%x\n", | |
78 | data->cid, data->itid, data->error_code, | |
79 | data->fw_debug_param); | |
80 | ||
81 | qedi_ep = qedi->ep_tbl[data->cid]; | |
82 | ||
83 | if (!qedi_ep) { | |
84 | QEDI_WARN(&qedi->dbg_ctx, | |
85 | "Cannot process event, ep already disconnected, cid=0x%x\n", | |
86 | data->cid); | |
87 | WARN_ON(1); | |
88 | return -ENODEV; | |
89 | } | |
90 | ||
91 | switch (fw_event_code) { | |
92 | case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: | |
93 | if (qedi_ep->state == EP_STATE_OFLDCONN_START) | |
94 | qedi_ep->state = EP_STATE_OFLDCONN_COMPL; | |
95 | ||
96 | wake_up_interruptible(&qedi_ep->tcp_ofld_wait); | |
97 | break; | |
98 | case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: | |
99 | qedi_ep->state = EP_STATE_DISCONN_COMPL; | |
100 | wake_up_interruptible(&qedi_ep->tcp_ofld_wait); | |
101 | break; | |
102 | case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: | |
103 | qedi_process_iscsi_error(qedi_ep, data); | |
104 | break; | |
105 | case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: | |
106 | case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: | |
107 | case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: | |
108 | case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: | |
109 | case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: | |
110 | case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: | |
111 | case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: | |
112 | qedi_process_tcp_error(qedi_ep, data); | |
113 | break; | |
114 | default: | |
115 | QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", | |
116 | fw_event_code); | |
117 | } | |
118 | ||
119 | return rval; | |
120 | } | |
121 | ||
122 | static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) | |
123 | { | |
124 | struct qedi_uio_dev *udev = uinfo->priv; | |
125 | struct qedi_ctx *qedi = udev->qedi; | |
126 | ||
127 | if (!capable(CAP_NET_ADMIN)) | |
128 | return -EPERM; | |
129 | ||
130 | if (udev->uio_dev != -1) | |
131 | return -EBUSY; | |
132 | ||
133 | rtnl_lock(); | |
134 | udev->uio_dev = iminor(inode); | |
135 | qedi_reset_uio_rings(udev); | |
136 | set_bit(UIO_DEV_OPENED, &qedi->flags); | |
137 | rtnl_unlock(); | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
142 | static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) | |
143 | { | |
144 | struct qedi_uio_dev *udev = uinfo->priv; | |
145 | struct qedi_ctx *qedi = udev->qedi; | |
146 | ||
147 | udev->uio_dev = -1; | |
148 | clear_bit(UIO_DEV_OPENED, &qedi->flags); | |
149 | qedi_ll2_free_skbs(qedi); | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) | |
154 | { | |
5e901d0b AE |
155 | if (udev->uctrl) { |
156 | free_page((unsigned long)udev->uctrl); | |
157 | udev->uctrl = NULL; | |
158 | } | |
159 | ||
ace7f46b MR |
160 | if (udev->ll2_ring) { |
161 | free_page((unsigned long)udev->ll2_ring); | |
162 | udev->ll2_ring = NULL; | |
163 | } | |
164 | ||
165 | if (udev->ll2_buf) { | |
166 | free_pages((unsigned long)udev->ll2_buf, 2); | |
167 | udev->ll2_buf = NULL; | |
168 | } | |
169 | } | |
170 | ||
171 | static void __qedi_free_uio(struct qedi_uio_dev *udev) | |
172 | { | |
173 | uio_unregister_device(&udev->qedi_uinfo); | |
174 | ||
175 | __qedi_free_uio_rings(udev); | |
176 | ||
177 | pci_dev_put(udev->pdev); | |
ace7f46b MR |
178 | kfree(udev); |
179 | } | |
180 | ||
181 | static void qedi_free_uio(struct qedi_uio_dev *udev) | |
182 | { | |
183 | if (!udev) | |
184 | return; | |
185 | ||
186 | list_del_init(&udev->list); | |
187 | __qedi_free_uio(udev); | |
188 | } | |
189 | ||
190 | static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) | |
191 | { | |
192 | struct qedi_ctx *qedi = NULL; | |
193 | struct qedi_uio_ctrl *uctrl = NULL; | |
194 | ||
195 | qedi = udev->qedi; | |
196 | uctrl = udev->uctrl; | |
197 | ||
198 | spin_lock_bh(&qedi->ll2_lock); | |
199 | uctrl->host_rx_cons = 0; | |
200 | uctrl->hw_rx_prod = 0; | |
201 | uctrl->hw_rx_bd_prod = 0; | |
202 | uctrl->host_rx_bd_cons = 0; | |
203 | ||
204 | memset(udev->ll2_ring, 0, udev->ll2_ring_size); | |
205 | memset(udev->ll2_buf, 0, udev->ll2_buf_size); | |
206 | spin_unlock_bh(&qedi->ll2_lock); | |
207 | } | |
208 | ||
209 | static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) | |
210 | { | |
211 | int rc = 0; | |
212 | ||
213 | if (udev->ll2_ring || udev->ll2_buf) | |
214 | return rc; | |
215 | ||
5e901d0b AE |
216 | /* Memory for control area. */ |
217 | udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); | |
218 | if (!udev->uctrl) | |
219 | return -ENOMEM; | |
220 | ||
ace7f46b MR |
221 | /* Allocating memory for LL2 ring */ |
222 | udev->ll2_ring_size = QEDI_PAGE_SIZE; | |
223 | udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); | |
224 | if (!udev->ll2_ring) { | |
225 | rc = -ENOMEM; | |
226 | goto exit_alloc_ring; | |
227 | } | |
228 | ||
229 | /* Allocating memory for Tx/Rx pkt buffer */ | |
230 | udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE; | |
231 | udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); | |
232 | udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | | |
233 | __GFP_ZERO, 2); | |
234 | if (!udev->ll2_buf) { | |
235 | rc = -ENOMEM; | |
236 | goto exit_alloc_buf; | |
237 | } | |
238 | return rc; | |
239 | ||
240 | exit_alloc_buf: | |
241 | free_page((unsigned long)udev->ll2_ring); | |
242 | udev->ll2_ring = NULL; | |
243 | exit_alloc_ring: | |
244 | return rc; | |
245 | } | |
246 | ||
247 | static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) | |
248 | { | |
249 | struct qedi_uio_dev *udev = NULL; | |
ace7f46b MR |
250 | int rc = 0; |
251 | ||
252 | list_for_each_entry(udev, &qedi_udev_list, list) { | |
253 | if (udev->pdev == qedi->pdev) { | |
254 | udev->qedi = qedi; | |
255 | if (__qedi_alloc_uio_rings(udev)) { | |
256 | udev->qedi = NULL; | |
257 | return -ENOMEM; | |
258 | } | |
259 | qedi->udev = udev; | |
260 | return 0; | |
261 | } | |
262 | } | |
263 | ||
264 | udev = kzalloc(sizeof(*udev), GFP_KERNEL); | |
265 | if (!udev) { | |
266 | rc = -ENOMEM; | |
267 | goto err_udev; | |
268 | } | |
269 | ||
ace7f46b MR |
270 | udev->uio_dev = -1; |
271 | ||
272 | udev->qedi = qedi; | |
273 | udev->pdev = qedi->pdev; | |
ace7f46b MR |
274 | |
275 | rc = __qedi_alloc_uio_rings(udev); | |
276 | if (rc) | |
5e901d0b | 277 | goto err_uctrl; |
ace7f46b MR |
278 | |
279 | list_add(&udev->list, &qedi_udev_list); | |
280 | ||
281 | pci_dev_get(udev->pdev); | |
282 | qedi->udev = udev; | |
283 | ||
284 | udev->tx_pkt = udev->ll2_buf; | |
285 | udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE; | |
286 | return 0; | |
287 | ||
ace7f46b MR |
288 | err_uctrl: |
289 | kfree(udev); | |
290 | err_udev: | |
291 | return -ENOMEM; | |
292 | } | |
293 | ||
294 | static int qedi_init_uio(struct qedi_ctx *qedi) | |
295 | { | |
296 | struct qedi_uio_dev *udev = qedi->udev; | |
297 | struct uio_info *uinfo; | |
298 | int ret = 0; | |
299 | ||
300 | if (!udev) | |
301 | return -ENOMEM; | |
302 | ||
303 | uinfo = &udev->qedi_uinfo; | |
304 | ||
305 | uinfo->mem[0].addr = (unsigned long)udev->uctrl; | |
306 | uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); | |
307 | uinfo->mem[0].memtype = UIO_MEM_LOGICAL; | |
308 | ||
309 | uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; | |
310 | uinfo->mem[1].size = udev->ll2_ring_size; | |
311 | uinfo->mem[1].memtype = UIO_MEM_LOGICAL; | |
312 | ||
313 | uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; | |
314 | uinfo->mem[2].size = udev->ll2_buf_size; | |
315 | uinfo->mem[2].memtype = UIO_MEM_LOGICAL; | |
316 | ||
317 | uinfo->name = "qedi_uio"; | |
318 | uinfo->version = QEDI_MODULE_VERSION; | |
319 | uinfo->irq = UIO_IRQ_CUSTOM; | |
320 | ||
321 | uinfo->open = qedi_uio_open; | |
322 | uinfo->release = qedi_uio_close; | |
323 | ||
324 | if (udev->uio_dev == -1) { | |
325 | if (!uinfo->priv) { | |
326 | uinfo->priv = udev; | |
327 | ||
328 | ret = uio_register_device(&udev->pdev->dev, uinfo); | |
329 | if (ret) { | |
330 | QEDI_ERR(&qedi->dbg_ctx, | |
331 | "UIO registration failed\n"); | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
336 | return ret; | |
337 | } | |
338 | ||
339 | static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, | |
340 | struct qed_sb_info *sb_info, u16 sb_id) | |
341 | { | |
342 | struct status_block *sb_virt; | |
343 | dma_addr_t sb_phys; | |
344 | int ret; | |
345 | ||
346 | sb_virt = dma_alloc_coherent(&qedi->pdev->dev, | |
347 | sizeof(struct status_block), &sb_phys, | |
348 | GFP_KERNEL); | |
349 | if (!sb_virt) { | |
350 | QEDI_ERR(&qedi->dbg_ctx, | |
351 | "Status block allocation failed for id = %d.\n", | |
352 | sb_id); | |
353 | return -ENOMEM; | |
354 | } | |
355 | ||
356 | ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, | |
357 | sb_id, QED_SB_TYPE_STORAGE); | |
358 | if (ret) { | |
359 | QEDI_ERR(&qedi->dbg_ctx, | |
360 | "Status block initialization failed for id = %d.\n", | |
361 | sb_id); | |
362 | return ret; | |
363 | } | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | static void qedi_free_sb(struct qedi_ctx *qedi) | |
369 | { | |
370 | struct qed_sb_info *sb_info; | |
371 | int id; | |
372 | ||
373 | for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { | |
374 | sb_info = &qedi->sb_array[id]; | |
375 | if (sb_info->sb_virt) | |
376 | dma_free_coherent(&qedi->pdev->dev, | |
377 | sizeof(*sb_info->sb_virt), | |
378 | (void *)sb_info->sb_virt, | |
379 | sb_info->sb_phys); | |
380 | } | |
381 | } | |
382 | ||
383 | static void qedi_free_fp(struct qedi_ctx *qedi) | |
384 | { | |
385 | kfree(qedi->fp_array); | |
386 | kfree(qedi->sb_array); | |
387 | } | |
388 | ||
389 | static void qedi_destroy_fp(struct qedi_ctx *qedi) | |
390 | { | |
391 | qedi_free_sb(qedi); | |
392 | qedi_free_fp(qedi); | |
393 | } | |
394 | ||
395 | static int qedi_alloc_fp(struct qedi_ctx *qedi) | |
396 | { | |
397 | int ret = 0; | |
398 | ||
399 | qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), | |
400 | sizeof(struct qedi_fastpath), GFP_KERNEL); | |
401 | if (!qedi->fp_array) { | |
402 | QEDI_ERR(&qedi->dbg_ctx, | |
403 | "fastpath fp array allocation failed.\n"); | |
404 | return -ENOMEM; | |
405 | } | |
406 | ||
407 | qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), | |
408 | sizeof(struct qed_sb_info), GFP_KERNEL); | |
409 | if (!qedi->sb_array) { | |
410 | QEDI_ERR(&qedi->dbg_ctx, | |
411 | "fastpath sb array allocation failed.\n"); | |
412 | ret = -ENOMEM; | |
413 | goto free_fp; | |
414 | } | |
415 | ||
416 | return ret; | |
417 | ||
418 | free_fp: | |
419 | qedi_free_fp(qedi); | |
420 | return ret; | |
421 | } | |
422 | ||
423 | static void qedi_int_fp(struct qedi_ctx *qedi) | |
424 | { | |
425 | struct qedi_fastpath *fp; | |
426 | int id; | |
427 | ||
428 | memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * | |
429 | sizeof(*qedi->fp_array)); | |
430 | memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * | |
431 | sizeof(*qedi->sb_array)); | |
432 | ||
433 | for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { | |
434 | fp = &qedi->fp_array[id]; | |
435 | fp->sb_info = &qedi->sb_array[id]; | |
436 | fp->sb_id = id; | |
437 | fp->qedi = qedi; | |
438 | snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", | |
439 | "qedi", id); | |
440 | ||
441 | /* fp_array[i] ---- irq cookie | |
442 | * So init data which is needed in int ctx | |
443 | */ | |
444 | } | |
445 | } | |
446 | ||
447 | static int qedi_prepare_fp(struct qedi_ctx *qedi) | |
448 | { | |
449 | struct qedi_fastpath *fp; | |
450 | int id, ret = 0; | |
451 | ||
452 | ret = qedi_alloc_fp(qedi); | |
453 | if (ret) | |
454 | goto err; | |
455 | ||
456 | qedi_int_fp(qedi); | |
457 | ||
458 | for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { | |
459 | fp = &qedi->fp_array[id]; | |
460 | ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); | |
461 | if (ret) { | |
462 | QEDI_ERR(&qedi->dbg_ctx, | |
463 | "SB allocation and initialization failed.\n"); | |
464 | ret = -EIO; | |
465 | goto err_init; | |
466 | } | |
467 | } | |
468 | ||
469 | return 0; | |
470 | ||
471 | err_init: | |
472 | qedi_free_sb(qedi); | |
473 | qedi_free_fp(qedi); | |
474 | err: | |
475 | return ret; | |
476 | } | |
477 | ||
478 | static int qedi_setup_cid_que(struct qedi_ctx *qedi) | |
479 | { | |
480 | int i; | |
481 | ||
482 | qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, | |
483 | sizeof(u32), GFP_KERNEL); | |
484 | if (!qedi->cid_que.cid_que_base) | |
485 | return -ENOMEM; | |
486 | ||
487 | qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, | |
488 | sizeof(struct qedi_conn *), | |
489 | GFP_KERNEL); | |
490 | if (!qedi->cid_que.conn_cid_tbl) { | |
491 | kfree(qedi->cid_que.cid_que_base); | |
492 | qedi->cid_que.cid_que_base = NULL; | |
493 | return -ENOMEM; | |
494 | } | |
495 | ||
496 | qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; | |
497 | qedi->cid_que.cid_q_prod_idx = 0; | |
498 | qedi->cid_que.cid_q_cons_idx = 0; | |
499 | qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; | |
500 | qedi->cid_que.cid_free_cnt = qedi->max_active_conns; | |
501 | ||
502 | for (i = 0; i < qedi->max_active_conns; i++) { | |
503 | qedi->cid_que.cid_que[i] = i; | |
504 | qedi->cid_que.conn_cid_tbl[i] = NULL; | |
505 | } | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | static void qedi_release_cid_que(struct qedi_ctx *qedi) | |
511 | { | |
512 | kfree(qedi->cid_que.cid_que_base); | |
513 | qedi->cid_que.cid_que_base = NULL; | |
514 | ||
515 | kfree(qedi->cid_que.conn_cid_tbl); | |
516 | qedi->cid_que.conn_cid_tbl = NULL; | |
517 | } | |
518 | ||
519 | static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, | |
520 | u16 start_id, u16 next) | |
521 | { | |
522 | id_tbl->start = start_id; | |
523 | id_tbl->max = size; | |
524 | id_tbl->next = next; | |
525 | spin_lock_init(&id_tbl->lock); | |
526 | id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); | |
527 | if (!id_tbl->table) | |
528 | return -ENOMEM; | |
529 | ||
530 | return 0; | |
531 | } | |
532 | ||
533 | static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) | |
534 | { | |
535 | kfree(id_tbl->table); | |
536 | id_tbl->table = NULL; | |
537 | } | |
538 | ||
539 | int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) | |
540 | { | |
541 | int ret = -1; | |
542 | ||
543 | id -= id_tbl->start; | |
544 | if (id >= id_tbl->max) | |
545 | return ret; | |
546 | ||
547 | spin_lock(&id_tbl->lock); | |
548 | if (!test_bit(id, id_tbl->table)) { | |
549 | set_bit(id, id_tbl->table); | |
550 | ret = 0; | |
551 | } | |
552 | spin_unlock(&id_tbl->lock); | |
553 | return ret; | |
554 | } | |
555 | ||
556 | u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) | |
557 | { | |
558 | u16 id; | |
559 | ||
560 | spin_lock(&id_tbl->lock); | |
561 | id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); | |
562 | if (id >= id_tbl->max) { | |
563 | id = QEDI_LOCAL_PORT_INVALID; | |
564 | if (id_tbl->next != 0) { | |
565 | id = find_first_zero_bit(id_tbl->table, id_tbl->next); | |
566 | if (id >= id_tbl->next) | |
567 | id = QEDI_LOCAL_PORT_INVALID; | |
568 | } | |
569 | } | |
570 | ||
571 | if (id < id_tbl->max) { | |
572 | set_bit(id, id_tbl->table); | |
573 | id_tbl->next = (id + 1) & (id_tbl->max - 1); | |
574 | id += id_tbl->start; | |
575 | } | |
576 | ||
577 | spin_unlock(&id_tbl->lock); | |
578 | ||
579 | return id; | |
580 | } | |
581 | ||
582 | void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) | |
583 | { | |
584 | if (id == QEDI_LOCAL_PORT_INVALID) | |
585 | return; | |
586 | ||
587 | id -= id_tbl->start; | |
588 | if (id >= id_tbl->max) | |
589 | return; | |
590 | ||
591 | clear_bit(id, id_tbl->table); | |
592 | } | |
593 | ||
594 | static void qedi_cm_free_mem(struct qedi_ctx *qedi) | |
595 | { | |
596 | kfree(qedi->ep_tbl); | |
597 | qedi->ep_tbl = NULL; | |
598 | qedi_free_id_tbl(&qedi->lcl_port_tbl); | |
599 | } | |
600 | ||
601 | static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) | |
602 | { | |
603 | u16 port_id; | |
604 | ||
605 | qedi->ep_tbl = kzalloc((qedi->max_active_conns * | |
606 | sizeof(struct qedi_endpoint *)), GFP_KERNEL); | |
607 | if (!qedi->ep_tbl) | |
608 | return -ENOMEM; | |
609 | port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; | |
610 | if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, | |
611 | QEDI_LOCAL_PORT_MIN, port_id)) { | |
612 | qedi_cm_free_mem(qedi); | |
613 | return -ENOMEM; | |
614 | } | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
619 | static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) | |
620 | { | |
621 | struct Scsi_Host *shost; | |
622 | struct qedi_ctx *qedi = NULL; | |
623 | ||
624 | shost = iscsi_host_alloc(&qedi_host_template, | |
625 | sizeof(struct qedi_ctx), 0); | |
626 | if (!shost) { | |
627 | QEDI_ERR(NULL, "Could not allocate shost\n"); | |
628 | goto exit_setup_shost; | |
629 | } | |
630 | ||
631 | shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA; | |
632 | shost->max_channel = 0; | |
633 | shost->max_lun = ~0; | |
634 | shost->max_cmd_len = 16; | |
635 | shost->transportt = qedi_scsi_transport; | |
636 | ||
637 | qedi = iscsi_host_priv(shost); | |
638 | memset(qedi, 0, sizeof(*qedi)); | |
639 | qedi->shost = shost; | |
640 | qedi->dbg_ctx.host_no = shost->host_no; | |
641 | qedi->pdev = pdev; | |
642 | qedi->dbg_ctx.pdev = pdev; | |
643 | qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; | |
644 | qedi->max_sqes = QEDI_SQ_SIZE; | |
645 | ||
646 | if (shost_use_blk_mq(shost)) | |
647 | shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); | |
648 | ||
649 | pci_set_drvdata(pdev, qedi); | |
650 | ||
651 | exit_setup_shost: | |
652 | return qedi; | |
653 | } | |
654 | ||
655 | static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) | |
656 | { | |
657 | struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; | |
658 | struct qedi_uio_dev *udev; | |
659 | struct qedi_uio_ctrl *uctrl; | |
660 | struct skb_work_list *work; | |
661 | u32 prod; | |
662 | ||
663 | if (!qedi) { | |
664 | QEDI_ERR(NULL, "qedi is NULL\n"); | |
665 | return -1; | |
666 | } | |
667 | ||
668 | if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { | |
669 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, | |
670 | "UIO DEV is not opened\n"); | |
671 | kfree_skb(skb); | |
672 | return 0; | |
673 | } | |
674 | ||
675 | udev = qedi->udev; | |
676 | uctrl = udev->uctrl; | |
677 | ||
678 | work = kzalloc(sizeof(*work), GFP_ATOMIC); | |
679 | if (!work) { | |
680 | QEDI_WARN(&qedi->dbg_ctx, | |
681 | "Could not allocate work so dropping frame.\n"); | |
682 | kfree_skb(skb); | |
683 | return 0; | |
684 | } | |
685 | ||
686 | INIT_LIST_HEAD(&work->list); | |
687 | work->skb = skb; | |
688 | ||
689 | if (skb_vlan_tag_present(skb)) | |
690 | work->vlan_id = skb_vlan_tag_get(skb); | |
691 | ||
692 | if (work->vlan_id) | |
693 | __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); | |
694 | ||
695 | spin_lock_bh(&qedi->ll2_lock); | |
696 | list_add_tail(&work->list, &qedi->ll2_skb_list); | |
697 | ||
698 | ++uctrl->hw_rx_prod_cnt; | |
699 | prod = (uctrl->hw_rx_prod + 1) % RX_RING; | |
700 | if (prod != uctrl->host_rx_cons) { | |
701 | uctrl->hw_rx_prod = prod; | |
702 | spin_unlock_bh(&qedi->ll2_lock); | |
703 | wake_up_process(qedi->ll2_recv_thread); | |
704 | return 0; | |
705 | } | |
706 | ||
707 | spin_unlock_bh(&qedi->ll2_lock); | |
708 | return 0; | |
709 | } | |
710 | ||
711 | /* map this skb to iscsiuio mmaped region */ | |
712 | static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, | |
713 | u16 vlan_id) | |
714 | { | |
715 | struct qedi_uio_dev *udev = NULL; | |
716 | struct qedi_uio_ctrl *uctrl = NULL; | |
717 | struct qedi_rx_bd rxbd; | |
718 | struct qedi_rx_bd *p_rxbd; | |
719 | u32 rx_bd_prod; | |
720 | void *pkt; | |
721 | int len = 0; | |
722 | ||
723 | if (!qedi) { | |
724 | QEDI_ERR(NULL, "qedi is NULL\n"); | |
725 | return -1; | |
726 | } | |
727 | ||
728 | udev = qedi->udev; | |
729 | uctrl = udev->uctrl; | |
730 | pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE); | |
731 | len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE); | |
732 | memcpy(pkt, skb->data, len); | |
733 | ||
734 | memset(&rxbd, 0, sizeof(rxbd)); | |
735 | rxbd.rx_pkt_index = uctrl->hw_rx_prod; | |
736 | rxbd.rx_pkt_len = len; | |
737 | rxbd.vlan_id = vlan_id; | |
738 | ||
739 | uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; | |
740 | rx_bd_prod = uctrl->hw_rx_bd_prod; | |
741 | p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; | |
742 | p_rxbd += rx_bd_prod; | |
743 | ||
744 | memcpy(p_rxbd, &rxbd, sizeof(rxbd)); | |
745 | ||
746 | /* notify the iscsiuio about new packet */ | |
747 | uio_event_notify(&udev->qedi_uinfo); | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) | |
753 | { | |
754 | struct skb_work_list *work, *work_tmp; | |
755 | ||
756 | spin_lock_bh(&qedi->ll2_lock); | |
757 | list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { | |
758 | list_del(&work->list); | |
759 | if (work->skb) | |
760 | kfree_skb(work->skb); | |
761 | kfree(work); | |
762 | } | |
763 | spin_unlock_bh(&qedi->ll2_lock); | |
764 | } | |
765 | ||
766 | static int qedi_ll2_recv_thread(void *arg) | |
767 | { | |
768 | struct qedi_ctx *qedi = (struct qedi_ctx *)arg; | |
769 | struct skb_work_list *work, *work_tmp; | |
770 | ||
771 | set_user_nice(current, -20); | |
772 | ||
773 | while (!kthread_should_stop()) { | |
774 | spin_lock_bh(&qedi->ll2_lock); | |
775 | list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, | |
776 | list) { | |
777 | list_del(&work->list); | |
778 | qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); | |
779 | kfree_skb(work->skb); | |
780 | kfree(work); | |
781 | } | |
782 | set_current_state(TASK_INTERRUPTIBLE); | |
783 | spin_unlock_bh(&qedi->ll2_lock); | |
784 | schedule(); | |
785 | } | |
786 | ||
787 | __set_current_state(TASK_RUNNING); | |
788 | return 0; | |
789 | } | |
790 | ||
791 | static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) | |
792 | { | |
793 | u8 num_sq_pages; | |
794 | u32 log_page_size; | |
795 | int rval = 0; | |
796 | ||
797 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "Min number of MSIX %d\n", | |
798 | MIN_NUM_CPUS_MSIX(qedi)); | |
799 | ||
800 | num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; | |
801 | ||
802 | qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); | |
803 | ||
804 | memset(&qedi->pf_params.iscsi_pf_params, 0, | |
805 | sizeof(qedi->pf_params.iscsi_pf_params)); | |
806 | ||
807 | qedi->p_cpuq = pci_alloc_consistent(qedi->pdev, | |
808 | qedi->num_queues * sizeof(struct qedi_glbl_q_params), | |
809 | &qedi->hw_p_cpuq); | |
810 | if (!qedi->p_cpuq) { | |
811 | QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n"); | |
812 | rval = -1; | |
813 | goto err_alloc_mem; | |
814 | } | |
815 | ||
816 | rval = qedi_alloc_global_queues(qedi); | |
817 | if (rval) { | |
818 | QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); | |
819 | rval = -1; | |
820 | goto err_alloc_mem; | |
821 | } | |
822 | ||
823 | qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; | |
824 | qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; | |
825 | qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; | |
826 | qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; | |
827 | qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; | |
828 | qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; | |
829 | qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; | |
830 | qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; | |
962ea1c0 | 831 | qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000; |
3d61a313 | 832 | qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; |
ace7f46b MR |
833 | |
834 | for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { | |
835 | if ((1 << log_page_size) == PAGE_SIZE) | |
836 | break; | |
837 | } | |
838 | qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; | |
839 | ||
840 | qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = | |
841 | (u64)qedi->hw_p_cpuq; | |
842 | ||
843 | /* RQ BDQ initializations. | |
844 | * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) | |
845 | * rqe_log_size: 8 for 256B RQE | |
846 | */ | |
847 | qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; | |
848 | /* BDQ address and size */ | |
849 | qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = | |
850 | qedi->bdq_pbl_list_dma; | |
851 | qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = | |
852 | qedi->bdq_pbl_list_num_entries; | |
853 | qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; | |
854 | ||
855 | /* cq_num_entries: num_tasks + rq_num_entries */ | |
856 | qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; | |
857 | ||
858 | qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; | |
859 | qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; | |
860 | qedi->pf_params.iscsi_pf_params.ooo_enable = 1; | |
861 | ||
862 | err_alloc_mem: | |
863 | return rval; | |
864 | } | |
865 | ||
866 | /* Free DMA coherent memory for array of queue pointers we pass to qed */ | |
867 | static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) | |
868 | { | |
869 | size_t size = 0; | |
870 | ||
871 | if (qedi->p_cpuq) { | |
872 | size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); | |
873 | pci_free_consistent(qedi->pdev, size, qedi->p_cpuq, | |
874 | qedi->hw_p_cpuq); | |
875 | } | |
876 | ||
877 | qedi_free_global_queues(qedi); | |
878 | ||
879 | kfree(qedi->global_queues); | |
880 | } | |
881 | ||
882 | static void qedi_link_update(void *dev, struct qed_link_output *link) | |
883 | { | |
884 | struct qedi_ctx *qedi = (struct qedi_ctx *)dev; | |
885 | ||
886 | if (link->link_up) { | |
887 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); | |
888 | atomic_set(&qedi->link_state, QEDI_LINK_UP); | |
889 | } else { | |
890 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
891 | "Link Down event.\n"); | |
892 | atomic_set(&qedi->link_state, QEDI_LINK_DOWN); | |
893 | } | |
894 | } | |
895 | ||
896 | static struct qed_iscsi_cb_ops qedi_cb_ops = { | |
897 | { | |
898 | .link_update = qedi_link_update, | |
899 | } | |
900 | }; | |
901 | ||
902 | static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, | |
903 | u16 que_idx, struct qedi_percpu_s *p) | |
904 | { | |
905 | struct qedi_work *qedi_work; | |
906 | struct qedi_conn *q_conn; | |
907 | struct iscsi_conn *conn; | |
908 | struct qedi_cmd *qedi_cmd; | |
909 | u32 iscsi_cid; | |
910 | int rc = 0; | |
911 | ||
912 | iscsi_cid = cqe->cqe_common.conn_id; | |
913 | q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; | |
914 | if (!q_conn) { | |
915 | QEDI_WARN(&qedi->dbg_ctx, | |
916 | "Session no longer exists for cid=0x%x!!\n", | |
917 | iscsi_cid); | |
918 | return -1; | |
919 | } | |
920 | conn = q_conn->cls_conn->dd_data; | |
921 | ||
922 | switch (cqe->cqe_common.cqe_type) { | |
923 | case ISCSI_CQE_TYPE_SOLICITED: | |
924 | case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: | |
925 | qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); | |
926 | if (!qedi_cmd) { | |
927 | rc = -1; | |
928 | break; | |
929 | } | |
930 | INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); | |
931 | qedi_cmd->cqe_work.qedi = qedi; | |
932 | memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); | |
933 | qedi_cmd->cqe_work.que_idx = que_idx; | |
934 | qedi_cmd->cqe_work.is_solicited = true; | |
935 | list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); | |
936 | break; | |
937 | case ISCSI_CQE_TYPE_UNSOLICITED: | |
938 | case ISCSI_CQE_TYPE_DUMMY: | |
939 | case ISCSI_CQE_TYPE_TASK_CLEANUP: | |
940 | qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); | |
941 | if (!qedi_work) { | |
942 | rc = -1; | |
943 | break; | |
944 | } | |
945 | INIT_LIST_HEAD(&qedi_work->list); | |
946 | qedi_work->qedi = qedi; | |
947 | memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); | |
948 | qedi_work->que_idx = que_idx; | |
949 | qedi_work->is_solicited = false; | |
950 | list_add_tail(&qedi_work->list, &p->work_list); | |
951 | break; | |
952 | default: | |
953 | rc = -1; | |
954 | QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); | |
955 | } | |
956 | return rc; | |
957 | } | |
958 | ||
959 | static bool qedi_process_completions(struct qedi_fastpath *fp) | |
960 | { | |
961 | struct qedi_ctx *qedi = fp->qedi; | |
962 | struct qed_sb_info *sb_info = fp->sb_info; | |
963 | struct status_block *sb = sb_info->sb_virt; | |
964 | struct qedi_percpu_s *p = NULL; | |
965 | struct global_queue *que; | |
966 | u16 prod_idx; | |
967 | unsigned long flags; | |
968 | union iscsi_cqe *cqe; | |
969 | int cpu; | |
970 | int ret; | |
971 | ||
972 | /* Get the current firmware producer index */ | |
973 | prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; | |
974 | ||
975 | if (prod_idx >= QEDI_CQ_SIZE) | |
976 | prod_idx = prod_idx % QEDI_CQ_SIZE; | |
977 | ||
978 | que = qedi->global_queues[fp->sb_id]; | |
979 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, | |
980 | "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", | |
981 | que, prod_idx, que->cq_cons_idx, fp->sb_id); | |
982 | ||
983 | qedi->intr_cpu = fp->sb_id; | |
984 | cpu = smp_processor_id(); | |
985 | p = &per_cpu(qedi_percpu, cpu); | |
986 | ||
987 | if (unlikely(!p->iothread)) | |
988 | WARN_ON(1); | |
989 | ||
990 | spin_lock_irqsave(&p->p_work_lock, flags); | |
991 | while (que->cq_cons_idx != prod_idx) { | |
992 | cqe = &que->cq[que->cq_cons_idx]; | |
993 | ||
994 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, | |
995 | "cqe=%p prod_idx=%d cons_idx=%d.\n", | |
996 | cqe, prod_idx, que->cq_cons_idx); | |
997 | ||
998 | ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); | |
999 | if (ret) | |
1000 | continue; | |
1001 | ||
1002 | que->cq_cons_idx++; | |
1003 | if (que->cq_cons_idx == QEDI_CQ_SIZE) | |
1004 | que->cq_cons_idx = 0; | |
1005 | } | |
1006 | wake_up_process(p->iothread); | |
1007 | spin_unlock_irqrestore(&p->p_work_lock, flags); | |
1008 | ||
1009 | return true; | |
1010 | } | |
1011 | ||
1012 | static bool qedi_fp_has_work(struct qedi_fastpath *fp) | |
1013 | { | |
1014 | struct qedi_ctx *qedi = fp->qedi; | |
1015 | struct global_queue *que; | |
1016 | struct qed_sb_info *sb_info = fp->sb_info; | |
1017 | struct status_block *sb = sb_info->sb_virt; | |
1018 | u16 prod_idx; | |
1019 | ||
1020 | barrier(); | |
1021 | ||
1022 | /* Get the current firmware producer index */ | |
1023 | prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; | |
1024 | ||
1025 | /* Get the pointer to the global CQ this completion is on */ | |
1026 | que = qedi->global_queues[fp->sb_id]; | |
1027 | ||
1028 | /* prod idx wrap around uint16 */ | |
1029 | if (prod_idx >= QEDI_CQ_SIZE) | |
1030 | prod_idx = prod_idx % QEDI_CQ_SIZE; | |
1031 | ||
1032 | return (que->cq_cons_idx != prod_idx); | |
1033 | } | |
1034 | ||
1035 | /* MSI-X fastpath handler code */ | |
1036 | static irqreturn_t qedi_msix_handler(int irq, void *dev_id) | |
1037 | { | |
1038 | struct qedi_fastpath *fp = dev_id; | |
1039 | struct qedi_ctx *qedi = fp->qedi; | |
1040 | bool wake_io_thread = true; | |
1041 | ||
1042 | qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); | |
1043 | ||
1044 | process_again: | |
1045 | wake_io_thread = qedi_process_completions(fp); | |
1046 | if (wake_io_thread) { | |
1047 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, | |
1048 | "process already running\n"); | |
1049 | } | |
1050 | ||
1051 | if (qedi_fp_has_work(fp) == 0) | |
1052 | qed_sb_update_sb_idx(fp->sb_info); | |
1053 | ||
1054 | /* Check for more work */ | |
1055 | rmb(); | |
1056 | ||
1057 | if (qedi_fp_has_work(fp) == 0) | |
1058 | qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); | |
1059 | else | |
1060 | goto process_again; | |
1061 | ||
1062 | return IRQ_HANDLED; | |
1063 | } | |
1064 | ||
1065 | /* simd handler for MSI/INTa */ | |
1066 | static void qedi_simd_int_handler(void *cookie) | |
1067 | { | |
1068 | /* Cookie is qedi_ctx struct */ | |
1069 | struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; | |
1070 | ||
1071 | QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); | |
1072 | } | |
1073 | ||
1074 | #define QEDI_SIMD_HANDLER_NUM 0 | |
1075 | static void qedi_sync_free_irqs(struct qedi_ctx *qedi) | |
1076 | { | |
1077 | int i; | |
1078 | ||
1079 | if (qedi->int_info.msix_cnt) { | |
1080 | for (i = 0; i < qedi->int_info.used_cnt; i++) { | |
1081 | synchronize_irq(qedi->int_info.msix[i].vector); | |
1082 | irq_set_affinity_hint(qedi->int_info.msix[i].vector, | |
1083 | NULL); | |
1084 | free_irq(qedi->int_info.msix[i].vector, | |
1085 | &qedi->fp_array[i]); | |
1086 | } | |
1087 | } else { | |
1088 | qedi_ops->common->simd_handler_clean(qedi->cdev, | |
1089 | QEDI_SIMD_HANDLER_NUM); | |
1090 | } | |
1091 | ||
1092 | qedi->int_info.used_cnt = 0; | |
1093 | qedi_ops->common->set_fp_int(qedi->cdev, 0); | |
1094 | } | |
1095 | ||
1096 | static int qedi_request_msix_irq(struct qedi_ctx *qedi) | |
1097 | { | |
1098 | int i, rc, cpu; | |
1099 | ||
1100 | cpu = cpumask_first(cpu_online_mask); | |
1101 | for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) { | |
1102 | rc = request_irq(qedi->int_info.msix[i].vector, | |
1103 | qedi_msix_handler, 0, "qedi", | |
1104 | &qedi->fp_array[i]); | |
1105 | ||
1106 | if (rc) { | |
1107 | QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); | |
1108 | qedi_sync_free_irqs(qedi); | |
1109 | return rc; | |
1110 | } | |
1111 | qedi->int_info.used_cnt++; | |
1112 | rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, | |
1113 | get_cpu_mask(cpu)); | |
1114 | cpu = cpumask_next(cpu, cpu_online_mask); | |
1115 | } | |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | static int qedi_setup_int(struct qedi_ctx *qedi) | |
1121 | { | |
1122 | int rc = 0; | |
1123 | ||
1124 | rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); | |
1125 | rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); | |
1126 | if (rc) | |
1127 | goto exit_setup_int; | |
1128 | ||
1129 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, | |
1130 | "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", | |
1131 | qedi->int_info.msix_cnt, num_online_cpus()); | |
1132 | ||
1133 | if (qedi->int_info.msix_cnt) { | |
1134 | rc = qedi_request_msix_irq(qedi); | |
1135 | goto exit_setup_int; | |
1136 | } else { | |
1137 | qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, | |
1138 | QEDI_SIMD_HANDLER_NUM, | |
1139 | qedi_simd_int_handler); | |
1140 | qedi->int_info.used_cnt = 1; | |
1141 | } | |
1142 | ||
1143 | exit_setup_int: | |
1144 | return rc; | |
1145 | } | |
1146 | ||
c57ec8fb NJ |
1147 | static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) |
1148 | { | |
1149 | if (qedi->iscsi_cfg) | |
1150 | dma_free_coherent(&qedi->pdev->dev, | |
1151 | sizeof(struct nvm_iscsi_cfg), | |
1152 | qedi->iscsi_cfg, qedi->nvm_buf_dma); | |
1153 | } | |
1154 | ||
1155 | static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) | |
1156 | { | |
1157 | qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev, | |
1158 | sizeof(struct nvm_iscsi_cfg), | |
1159 | &qedi->nvm_buf_dma, GFP_KERNEL); | |
1160 | if (!qedi->iscsi_cfg) { | |
1161 | QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); | |
1162 | return -ENOMEM; | |
1163 | } | |
1164 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1165 | "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg, | |
1166 | qedi->nvm_buf_dma); | |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | ||
ace7f46b MR |
1171 | static void qedi_free_bdq(struct qedi_ctx *qedi) |
1172 | { | |
1173 | int i; | |
1174 | ||
1175 | if (qedi->bdq_pbl_list) | |
1176 | dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE, | |
1177 | qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); | |
1178 | ||
1179 | if (qedi->bdq_pbl) | |
1180 | dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, | |
1181 | qedi->bdq_pbl, qedi->bdq_pbl_dma); | |
1182 | ||
1183 | for (i = 0; i < QEDI_BDQ_NUM; i++) { | |
1184 | if (qedi->bdq[i].buf_addr) { | |
1185 | dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, | |
1186 | qedi->bdq[i].buf_addr, | |
1187 | qedi->bdq[i].buf_dma); | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | static void qedi_free_global_queues(struct qedi_ctx *qedi) | |
1193 | { | |
1194 | int i; | |
1195 | struct global_queue **gl = qedi->global_queues; | |
1196 | ||
1197 | for (i = 0; i < qedi->num_queues; i++) { | |
1198 | if (!gl[i]) | |
1199 | continue; | |
1200 | ||
1201 | if (gl[i]->cq) | |
1202 | dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, | |
1203 | gl[i]->cq, gl[i]->cq_dma); | |
1204 | if (gl[i]->cq_pbl) | |
1205 | dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, | |
1206 | gl[i]->cq_pbl, gl[i]->cq_pbl_dma); | |
1207 | ||
1208 | kfree(gl[i]); | |
1209 | } | |
1210 | qedi_free_bdq(qedi); | |
c57ec8fb | 1211 | qedi_free_nvm_iscsi_cfg(qedi); |
ace7f46b MR |
1212 | } |
1213 | ||
1214 | static int qedi_alloc_bdq(struct qedi_ctx *qedi) | |
1215 | { | |
1216 | int i; | |
1217 | struct scsi_bd *pbl; | |
1218 | u64 *list; | |
1219 | dma_addr_t page; | |
1220 | ||
1221 | /* Alloc dma memory for BDQ buffers */ | |
1222 | for (i = 0; i < QEDI_BDQ_NUM; i++) { | |
1223 | qedi->bdq[i].buf_addr = | |
1224 | dma_alloc_coherent(&qedi->pdev->dev, | |
1225 | QEDI_BDQ_BUF_SIZE, | |
1226 | &qedi->bdq[i].buf_dma, | |
1227 | GFP_KERNEL); | |
1228 | if (!qedi->bdq[i].buf_addr) { | |
1229 | QEDI_ERR(&qedi->dbg_ctx, | |
1230 | "Could not allocate BDQ buffer %d.\n", i); | |
1231 | return -ENOMEM; | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | /* Alloc dma memory for BDQ page buffer list */ | |
1236 | qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); | |
1237 | qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE); | |
1238 | qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); | |
1239 | ||
1240 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", | |
1241 | qedi->rq_num_entries); | |
1242 | ||
1243 | qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, | |
1244 | qedi->bdq_pbl_mem_size, | |
1245 | &qedi->bdq_pbl_dma, GFP_KERNEL); | |
1246 | if (!qedi->bdq_pbl) { | |
1247 | QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); | |
1248 | return -ENOMEM; | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * Populate BDQ PBL with physical and virtual address of individual | |
1253 | * BDQ buffers | |
1254 | */ | |
1255 | pbl = (struct scsi_bd *)qedi->bdq_pbl; | |
1256 | for (i = 0; i < QEDI_BDQ_NUM; i++) { | |
1257 | pbl->address.hi = | |
1258 | cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); | |
1259 | pbl->address.lo = | |
1260 | cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); | |
1261 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
1262 | "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", | |
1263 | pbl, pbl->address.hi, pbl->address.lo, i); | |
1264 | pbl->opaque.hi = 0; | |
1265 | pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(i)); | |
1266 | pbl++; | |
1267 | } | |
1268 | ||
1269 | /* Allocate list of PBL pages */ | |
1270 | qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, | |
1271 | PAGE_SIZE, | |
1272 | &qedi->bdq_pbl_list_dma, | |
1273 | GFP_KERNEL); | |
1274 | if (!qedi->bdq_pbl_list) { | |
1275 | QEDI_ERR(&qedi->dbg_ctx, | |
1276 | "Could not allocate list of PBL pages.\n"); | |
1277 | return -ENOMEM; | |
1278 | } | |
1279 | memset(qedi->bdq_pbl_list, 0, PAGE_SIZE); | |
1280 | ||
1281 | /* | |
1282 | * Now populate PBL list with pages that contain pointers to the | |
1283 | * individual buffers. | |
1284 | */ | |
1285 | qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE; | |
1286 | list = (u64 *)qedi->bdq_pbl_list; | |
1287 | page = qedi->bdq_pbl_list_dma; | |
1288 | for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { | |
1289 | *list = qedi->bdq_pbl_dma; | |
1290 | list++; | |
1291 | page += PAGE_SIZE; | |
1292 | } | |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int qedi_alloc_global_queues(struct qedi_ctx *qedi) | |
1298 | { | |
1299 | u32 *list; | |
1300 | int i; | |
1301 | int status = 0, rc; | |
1302 | u32 *pbl; | |
1303 | dma_addr_t page; | |
1304 | int num_pages; | |
1305 | ||
1306 | /* | |
1307 | * Number of global queues (CQ / RQ). This should | |
1308 | * be <= number of available MSIX vectors for the PF | |
1309 | */ | |
1310 | if (!qedi->num_queues) { | |
1311 | QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); | |
1312 | return 1; | |
1313 | } | |
1314 | ||
1315 | /* Make sure we allocated the PBL that will contain the physical | |
1316 | * addresses of our queues | |
1317 | */ | |
1318 | if (!qedi->p_cpuq) { | |
1319 | status = 1; | |
1320 | goto mem_alloc_failure; | |
1321 | } | |
1322 | ||
1323 | qedi->global_queues = kzalloc((sizeof(struct global_queue *) * | |
1324 | qedi->num_queues), GFP_KERNEL); | |
1325 | if (!qedi->global_queues) { | |
1326 | QEDI_ERR(&qedi->dbg_ctx, | |
1327 | "Unable to allocate global queues array ptr memory\n"); | |
1328 | return -ENOMEM; | |
1329 | } | |
1330 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, | |
1331 | "qedi->global_queues=%p.\n", qedi->global_queues); | |
1332 | ||
1333 | /* Allocate DMA coherent buffers for BDQ */ | |
1334 | rc = qedi_alloc_bdq(qedi); | |
1335 | if (rc) | |
1336 | goto mem_alloc_failure; | |
1337 | ||
c57ec8fb NJ |
1338 | /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ |
1339 | rc = qedi_alloc_nvm_iscsi_cfg(qedi); | |
1340 | if (rc) | |
1341 | goto mem_alloc_failure; | |
1342 | ||
ace7f46b MR |
1343 | /* Allocate a CQ and an associated PBL for each MSI-X |
1344 | * vector. | |
1345 | */ | |
1346 | for (i = 0; i < qedi->num_queues; i++) { | |
1347 | qedi->global_queues[i] = | |
1348 | kzalloc(sizeof(*qedi->global_queues[0]), | |
1349 | GFP_KERNEL); | |
1350 | if (!qedi->global_queues[i]) { | |
1351 | QEDI_ERR(&qedi->dbg_ctx, | |
1352 | "Unable to allocation global queue %d.\n", i); | |
1353 | goto mem_alloc_failure; | |
1354 | } | |
1355 | ||
1356 | qedi->global_queues[i]->cq_mem_size = | |
1357 | (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); | |
1358 | qedi->global_queues[i]->cq_mem_size = | |
1359 | (qedi->global_queues[i]->cq_mem_size + | |
1360 | (QEDI_PAGE_SIZE - 1)); | |
1361 | ||
1362 | qedi->global_queues[i]->cq_pbl_size = | |
1363 | (qedi->global_queues[i]->cq_mem_size / | |
1364 | QEDI_PAGE_SIZE) * sizeof(void *); | |
1365 | qedi->global_queues[i]->cq_pbl_size = | |
1366 | (qedi->global_queues[i]->cq_pbl_size + | |
1367 | (QEDI_PAGE_SIZE - 1)); | |
1368 | ||
1369 | qedi->global_queues[i]->cq = | |
1370 | dma_alloc_coherent(&qedi->pdev->dev, | |
1371 | qedi->global_queues[i]->cq_mem_size, | |
1372 | &qedi->global_queues[i]->cq_dma, | |
1373 | GFP_KERNEL); | |
1374 | ||
1375 | if (!qedi->global_queues[i]->cq) { | |
1376 | QEDI_WARN(&qedi->dbg_ctx, | |
1377 | "Could not allocate cq.\n"); | |
1378 | status = -ENOMEM; | |
1379 | goto mem_alloc_failure; | |
1380 | } | |
1381 | memset(qedi->global_queues[i]->cq, 0, | |
1382 | qedi->global_queues[i]->cq_mem_size); | |
1383 | ||
1384 | qedi->global_queues[i]->cq_pbl = | |
1385 | dma_alloc_coherent(&qedi->pdev->dev, | |
1386 | qedi->global_queues[i]->cq_pbl_size, | |
1387 | &qedi->global_queues[i]->cq_pbl_dma, | |
1388 | GFP_KERNEL); | |
1389 | ||
1390 | if (!qedi->global_queues[i]->cq_pbl) { | |
1391 | QEDI_WARN(&qedi->dbg_ctx, | |
1392 | "Could not allocate cq PBL.\n"); | |
1393 | status = -ENOMEM; | |
1394 | goto mem_alloc_failure; | |
1395 | } | |
1396 | memset(qedi->global_queues[i]->cq_pbl, 0, | |
1397 | qedi->global_queues[i]->cq_pbl_size); | |
1398 | ||
1399 | /* Create PBL */ | |
1400 | num_pages = qedi->global_queues[i]->cq_mem_size / | |
1401 | QEDI_PAGE_SIZE; | |
1402 | page = qedi->global_queues[i]->cq_dma; | |
1403 | pbl = (u32 *)qedi->global_queues[i]->cq_pbl; | |
1404 | ||
1405 | while (num_pages--) { | |
1406 | *pbl = (u32)page; | |
1407 | pbl++; | |
1408 | *pbl = (u32)((u64)page >> 32); | |
1409 | pbl++; | |
1410 | page += QEDI_PAGE_SIZE; | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | list = (u32 *)qedi->p_cpuq; | |
1415 | ||
1416 | /* | |
1417 | * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, | |
1418 | * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points | |
1419 | * to the physical address which contains an array of pointers to the | |
1420 | * physical addresses of the specific queue pages. | |
1421 | */ | |
1422 | for (i = 0; i < qedi->num_queues; i++) { | |
1423 | *list = (u32)qedi->global_queues[i]->cq_pbl_dma; | |
1424 | list++; | |
1425 | *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); | |
1426 | list++; | |
1427 | ||
1428 | *list = (u32)0; | |
1429 | list++; | |
1430 | *list = (u32)((u64)0 >> 32); | |
1431 | list++; | |
1432 | } | |
1433 | ||
1434 | return 0; | |
1435 | ||
1436 | mem_alloc_failure: | |
1437 | qedi_free_global_queues(qedi); | |
1438 | return status; | |
1439 | } | |
1440 | ||
1441 | int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) | |
1442 | { | |
1443 | int rval = 0; | |
1444 | u32 *pbl; | |
1445 | dma_addr_t page; | |
1446 | int num_pages; | |
1447 | ||
1448 | if (!ep) | |
1449 | return -EIO; | |
1450 | ||
1451 | /* Calculate appropriate queue and PBL sizes */ | |
1452 | ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); | |
1453 | ep->sq_mem_size += QEDI_PAGE_SIZE - 1; | |
1454 | ||
1455 | ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); | |
1456 | ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; | |
1457 | ||
1458 | ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, | |
1459 | &ep->sq_dma, GFP_KERNEL); | |
1460 | if (!ep->sq) { | |
1461 | QEDI_WARN(&qedi->dbg_ctx, | |
1462 | "Could not allocate send queue.\n"); | |
1463 | rval = -ENOMEM; | |
1464 | goto out; | |
1465 | } | |
1466 | memset(ep->sq, 0, ep->sq_mem_size); | |
1467 | ||
1468 | ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, | |
1469 | &ep->sq_pbl_dma, GFP_KERNEL); | |
1470 | if (!ep->sq_pbl) { | |
1471 | QEDI_WARN(&qedi->dbg_ctx, | |
1472 | "Could not allocate send queue PBL.\n"); | |
1473 | rval = -ENOMEM; | |
1474 | goto out_free_sq; | |
1475 | } | |
1476 | memset(ep->sq_pbl, 0, ep->sq_pbl_size); | |
1477 | ||
1478 | /* Create PBL */ | |
1479 | num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; | |
1480 | page = ep->sq_dma; | |
1481 | pbl = (u32 *)ep->sq_pbl; | |
1482 | ||
1483 | while (num_pages--) { | |
1484 | *pbl = (u32)page; | |
1485 | pbl++; | |
1486 | *pbl = (u32)((u64)page >> 32); | |
1487 | pbl++; | |
1488 | page += QEDI_PAGE_SIZE; | |
1489 | } | |
1490 | ||
1491 | return rval; | |
1492 | ||
1493 | out_free_sq: | |
1494 | dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, | |
1495 | ep->sq_dma); | |
1496 | out: | |
1497 | return rval; | |
1498 | } | |
1499 | ||
1500 | void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) | |
1501 | { | |
1502 | if (ep->sq_pbl) | |
1503 | dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, | |
1504 | ep->sq_pbl_dma); | |
1505 | if (ep->sq) | |
1506 | dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, | |
1507 | ep->sq_dma); | |
1508 | } | |
1509 | ||
1510 | int qedi_get_task_idx(struct qedi_ctx *qedi) | |
1511 | { | |
1512 | s16 tmp_idx; | |
1513 | ||
1514 | again: | |
1515 | tmp_idx = find_first_zero_bit(qedi->task_idx_map, | |
1516 | MAX_ISCSI_TASK_ENTRIES); | |
1517 | ||
1518 | if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { | |
1519 | QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); | |
1520 | tmp_idx = -1; | |
1521 | goto err_idx; | |
1522 | } | |
1523 | ||
1524 | if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) | |
1525 | goto again; | |
1526 | ||
1527 | err_idx: | |
1528 | return tmp_idx; | |
1529 | } | |
1530 | ||
1531 | void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) | |
1532 | { | |
02d94e04 | 1533 | if (!test_and_clear_bit(idx, qedi->task_idx_map)) |
ace7f46b MR |
1534 | QEDI_ERR(&qedi->dbg_ctx, |
1535 | "FW task context, already cleared, tid=0x%x\n", idx); | |
ace7f46b MR |
1536 | } |
1537 | ||
1538 | void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, | |
1539 | struct qedi_cmd *cmd) | |
1540 | { | |
1541 | qedi->itt_map[tid].itt = proto_itt; | |
1542 | qedi->itt_map[tid].p_cmd = cmd; | |
1543 | ||
1544 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
1545 | "update itt map tid=0x%x, with proto itt=0x%x\n", tid, | |
1546 | qedi->itt_map[tid].itt); | |
1547 | } | |
1548 | ||
1549 | void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) | |
1550 | { | |
1551 | u16 i; | |
1552 | ||
1553 | for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { | |
1554 | if (qedi->itt_map[i].itt == itt) { | |
1555 | *tid = i; | |
1556 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
1557 | "Ref itt=0x%x, found at tid=0x%x\n", | |
1558 | itt, *tid); | |
1559 | return; | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | WARN_ON(1); | |
1564 | } | |
1565 | ||
1566 | void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) | |
1567 | { | |
1568 | *proto_itt = qedi->itt_map[tid].itt; | |
1569 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
1570 | "Get itt map tid [0x%x with proto itt[0x%x]", | |
1571 | tid, *proto_itt); | |
1572 | } | |
1573 | ||
1574 | struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) | |
1575 | { | |
1576 | struct qedi_cmd *cmd = NULL; | |
1577 | ||
1578 | if (tid > MAX_ISCSI_TASK_ENTRIES) | |
1579 | return NULL; | |
1580 | ||
1581 | cmd = qedi->itt_map[tid].p_cmd; | |
1582 | if (cmd->task_id != tid) | |
1583 | return NULL; | |
1584 | ||
1585 | qedi->itt_map[tid].p_cmd = NULL; | |
1586 | ||
1587 | return cmd; | |
1588 | } | |
1589 | ||
1590 | static int qedi_alloc_itt(struct qedi_ctx *qedi) | |
1591 | { | |
1592 | qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, | |
1593 | sizeof(struct qedi_itt_map), GFP_KERNEL); | |
1594 | if (!qedi->itt_map) { | |
1595 | QEDI_ERR(&qedi->dbg_ctx, | |
1596 | "Unable to allocate itt map array memory\n"); | |
1597 | return -ENOMEM; | |
1598 | } | |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static void qedi_free_itt(struct qedi_ctx *qedi) | |
1603 | { | |
1604 | kfree(qedi->itt_map); | |
1605 | } | |
1606 | ||
1607 | static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { | |
1608 | .rx_cb = qedi_ll2_rx, | |
1609 | .tx_cb = NULL, | |
1610 | }; | |
1611 | ||
1612 | static int qedi_percpu_io_thread(void *arg) | |
1613 | { | |
1614 | struct qedi_percpu_s *p = arg; | |
1615 | struct qedi_work *work, *tmp; | |
1616 | unsigned long flags; | |
1617 | LIST_HEAD(work_list); | |
1618 | ||
1619 | set_user_nice(current, -20); | |
1620 | ||
1621 | while (!kthread_should_stop()) { | |
1622 | spin_lock_irqsave(&p->p_work_lock, flags); | |
1623 | while (!list_empty(&p->work_list)) { | |
1624 | list_splice_init(&p->work_list, &work_list); | |
1625 | spin_unlock_irqrestore(&p->p_work_lock, flags); | |
1626 | ||
1627 | list_for_each_entry_safe(work, tmp, &work_list, list) { | |
1628 | list_del_init(&work->list); | |
1629 | qedi_fp_process_cqes(work); | |
1630 | if (!work->is_solicited) | |
1631 | kfree(work); | |
1632 | } | |
1633 | cond_resched(); | |
1634 | spin_lock_irqsave(&p->p_work_lock, flags); | |
1635 | } | |
1636 | set_current_state(TASK_INTERRUPTIBLE); | |
1637 | spin_unlock_irqrestore(&p->p_work_lock, flags); | |
1638 | schedule(); | |
1639 | } | |
1640 | __set_current_state(TASK_RUNNING); | |
1641 | ||
1642 | return 0; | |
1643 | } | |
1644 | ||
a98d1a0c | 1645 | static int qedi_cpu_online(unsigned int cpu) |
ace7f46b | 1646 | { |
a98d1a0c | 1647 | struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); |
ace7f46b MR |
1648 | struct task_struct *thread; |
1649 | ||
ace7f46b MR |
1650 | thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, |
1651 | cpu_to_node(cpu), | |
1652 | "qedi_thread/%d", cpu); | |
a98d1a0c TG |
1653 | if (IS_ERR(thread)) |
1654 | return PTR_ERR(thread); | |
1655 | ||
1656 | kthread_bind(thread, cpu); | |
1657 | p->iothread = thread; | |
1658 | wake_up_process(thread); | |
1659 | return 0; | |
ace7f46b MR |
1660 | } |
1661 | ||
a98d1a0c | 1662 | static int qedi_cpu_offline(unsigned int cpu) |
ace7f46b | 1663 | { |
a98d1a0c | 1664 | struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); |
ace7f46b | 1665 | struct qedi_work *work, *tmp; |
a98d1a0c | 1666 | struct task_struct *thread; |
ace7f46b | 1667 | |
ace7f46b MR |
1668 | spin_lock_bh(&p->p_work_lock); |
1669 | thread = p->iothread; | |
1670 | p->iothread = NULL; | |
1671 | ||
1672 | list_for_each_entry_safe(work, tmp, &p->work_list, list) { | |
1673 | list_del_init(&work->list); | |
1674 | qedi_fp_process_cqes(work); | |
1675 | if (!work->is_solicited) | |
1676 | kfree(work); | |
1677 | } | |
1678 | ||
1679 | spin_unlock_bh(&p->p_work_lock); | |
1680 | if (thread) | |
1681 | kthread_stop(thread); | |
a98d1a0c | 1682 | return 0; |
ace7f46b MR |
1683 | } |
1684 | ||
ace7f46b MR |
1685 | void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) |
1686 | { | |
1687 | struct qed_ll2_params params; | |
1688 | ||
1689 | qedi_recover_all_conns(qedi); | |
1690 | ||
1691 | qedi_ops->ll2->stop(qedi->cdev); | |
1692 | qedi_ll2_free_skbs(qedi); | |
1693 | ||
1694 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", | |
1695 | qedi->ll2_mtu, mtu); | |
1696 | memset(¶ms, 0, sizeof(params)); | |
1697 | qedi->ll2_mtu = mtu; | |
1698 | params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; | |
1699 | params.drop_ttl0_packets = 0; | |
1700 | params.rx_vlan_stripping = 1; | |
1701 | ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); | |
1702 | qedi_ops->ll2->start(qedi->cdev, ¶ms); | |
1703 | } | |
1704 | ||
c57ec8fb NJ |
1705 | /** |
1706 | * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting | |
1707 | * for gaps) for the matching absolute-pf-id of the QEDI device. | |
1708 | */ | |
1709 | static struct nvm_iscsi_block * | |
1710 | qedi_get_nvram_block(struct qedi_ctx *qedi) | |
1711 | { | |
1712 | int i; | |
1713 | u8 pf; | |
1714 | u32 flags; | |
1715 | struct nvm_iscsi_block *block; | |
1716 | ||
1717 | pf = qedi->dev_info.common.abs_pf_id; | |
1718 | block = &qedi->iscsi_cfg->block[0]; | |
1719 | for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { | |
1720 | flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> | |
1721 | NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; | |
1722 | if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | | |
1723 | NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && | |
1724 | (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) | |
1725 | >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) | |
1726 | return block; | |
1727 | } | |
1728 | return NULL; | |
1729 | } | |
1730 | ||
1731 | static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) | |
1732 | { | |
1733 | struct qedi_ctx *qedi = data; | |
1734 | struct nvm_iscsi_initiator *initiator; | |
1735 | char *str = buf; | |
1736 | int rc = 1; | |
1737 | u32 ipv6_en, dhcp_en, ip_len; | |
1738 | struct nvm_iscsi_block *block; | |
1739 | char *fmt, *ip, *sub, *gw; | |
1740 | ||
1741 | block = qedi_get_nvram_block(qedi); | |
1742 | if (!block) | |
1743 | return 0; | |
1744 | ||
1745 | initiator = &block->initiator; | |
1746 | ipv6_en = block->generic.ctrl_flags & | |
1747 | NVM_ISCSI_CFG_GEN_IPV6_ENABLED; | |
1748 | dhcp_en = block->generic.ctrl_flags & | |
1749 | NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; | |
1750 | /* Static IP assignments. */ | |
1751 | fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; | |
1752 | ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; | |
1753 | ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; | |
1754 | sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : | |
1755 | initiator->ipv4.subnet_mask.byte; | |
1756 | gw = ipv6_en ? initiator->ipv6.gateway.byte : | |
1757 | initiator->ipv4.gateway.byte; | |
1758 | /* DHCP IP adjustments. */ | |
1759 | fmt = dhcp_en ? "%s\n" : fmt; | |
1760 | if (dhcp_en) { | |
1761 | ip = ipv6_en ? "0::0" : "0.0.0.0"; | |
1762 | sub = ip; | |
1763 | gw = ip; | |
1764 | ip_len = ipv6_en ? 5 : 8; | |
1765 | } | |
1766 | ||
1767 | switch (type) { | |
1768 | case ISCSI_BOOT_ETH_IP_ADDR: | |
1769 | rc = snprintf(str, ip_len, fmt, ip); | |
1770 | break; | |
1771 | case ISCSI_BOOT_ETH_SUBNET_MASK: | |
1772 | rc = snprintf(str, ip_len, fmt, sub); | |
1773 | break; | |
1774 | case ISCSI_BOOT_ETH_GATEWAY: | |
1775 | rc = snprintf(str, ip_len, fmt, gw); | |
1776 | break; | |
1777 | case ISCSI_BOOT_ETH_FLAGS: | |
1778 | rc = snprintf(str, 3, "%hhd\n", | |
1779 | SYSFS_FLAG_FW_SEL_BOOT); | |
1780 | break; | |
1781 | case ISCSI_BOOT_ETH_INDEX: | |
1782 | rc = snprintf(str, 3, "0\n"); | |
1783 | break; | |
1784 | case ISCSI_BOOT_ETH_MAC: | |
1785 | rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN); | |
1786 | break; | |
1787 | case ISCSI_BOOT_ETH_VLAN: | |
1788 | rc = snprintf(str, 12, "%d\n", | |
1789 | GET_FIELD2(initiator->generic_cont0, | |
1790 | NVM_ISCSI_CFG_INITIATOR_VLAN)); | |
1791 | break; | |
1792 | case ISCSI_BOOT_ETH_ORIGIN: | |
1793 | if (dhcp_en) | |
1794 | rc = snprintf(str, 3, "3\n"); | |
1795 | break; | |
1796 | default: | |
1797 | rc = 0; | |
1798 | break; | |
1799 | } | |
1800 | ||
1801 | return rc; | |
1802 | } | |
1803 | ||
1804 | static umode_t qedi_eth_get_attr_visibility(void *data, int type) | |
1805 | { | |
1806 | int rc = 1; | |
1807 | ||
1808 | switch (type) { | |
1809 | case ISCSI_BOOT_ETH_FLAGS: | |
1810 | case ISCSI_BOOT_ETH_MAC: | |
1811 | case ISCSI_BOOT_ETH_INDEX: | |
1812 | case ISCSI_BOOT_ETH_IP_ADDR: | |
1813 | case ISCSI_BOOT_ETH_SUBNET_MASK: | |
1814 | case ISCSI_BOOT_ETH_GATEWAY: | |
1815 | case ISCSI_BOOT_ETH_ORIGIN: | |
1816 | case ISCSI_BOOT_ETH_VLAN: | |
1817 | rc = 0444; | |
1818 | break; | |
1819 | default: | |
1820 | rc = 0; | |
1821 | break; | |
1822 | } | |
1823 | return rc; | |
1824 | } | |
1825 | ||
1826 | static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) | |
1827 | { | |
1828 | struct qedi_ctx *qedi = data; | |
1829 | struct nvm_iscsi_initiator *initiator; | |
1830 | char *str = buf; | |
1831 | int rc; | |
1832 | struct nvm_iscsi_block *block; | |
1833 | ||
1834 | block = qedi_get_nvram_block(qedi); | |
1835 | if (!block) | |
1836 | return 0; | |
1837 | ||
1838 | initiator = &block->initiator; | |
1839 | ||
1840 | switch (type) { | |
1841 | case ISCSI_BOOT_INI_INITIATOR_NAME: | |
1842 | rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n", | |
1843 | initiator->initiator_name.byte); | |
1844 | break; | |
1845 | default: | |
1846 | rc = 0; | |
1847 | break; | |
1848 | } | |
1849 | return rc; | |
1850 | } | |
1851 | ||
1852 | static umode_t qedi_ini_get_attr_visibility(void *data, int type) | |
1853 | { | |
1854 | int rc; | |
1855 | ||
1856 | switch (type) { | |
1857 | case ISCSI_BOOT_INI_INITIATOR_NAME: | |
1858 | rc = 0444; | |
1859 | break; | |
1860 | default: | |
1861 | rc = 0; | |
1862 | break; | |
1863 | } | |
1864 | return rc; | |
1865 | } | |
1866 | ||
1867 | static ssize_t | |
1868 | qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, | |
1869 | char *buf, enum qedi_nvm_tgts idx) | |
1870 | { | |
1871 | char *str = buf; | |
1872 | int rc = 1; | |
1873 | u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; | |
1874 | struct nvm_iscsi_block *block; | |
1875 | char *chap_name, *chap_secret; | |
1876 | char *mchap_name, *mchap_secret; | |
1877 | ||
1878 | block = qedi_get_nvram_block(qedi); | |
1879 | if (!block) | |
1880 | goto exit_show_tgt_info; | |
1881 | ||
1882 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, | |
1883 | "Port:%d, tgt_idx:%d\n", | |
1884 | GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); | |
1885 | ||
1886 | ctrl_flags = block->target[idx].ctrl_flags & | |
1887 | NVM_ISCSI_CFG_TARGET_ENABLED; | |
1888 | ||
1889 | if (!ctrl_flags) { | |
1890 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, | |
1891 | "Target disabled\n"); | |
1892 | goto exit_show_tgt_info; | |
1893 | } | |
1894 | ||
1895 | ipv6_en = block->generic.ctrl_flags & | |
1896 | NVM_ISCSI_CFG_GEN_IPV6_ENABLED; | |
1897 | ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; | |
1898 | chap_en = block->generic.ctrl_flags & | |
1899 | NVM_ISCSI_CFG_GEN_CHAP_ENABLED; | |
1900 | chap_name = chap_en ? block->initiator.chap_name.byte : NULL; | |
1901 | chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; | |
1902 | ||
1903 | mchap_en = block->generic.ctrl_flags & | |
1904 | NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; | |
1905 | mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; | |
1906 | mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; | |
1907 | ||
1908 | switch (type) { | |
1909 | case ISCSI_BOOT_TGT_NAME: | |
1910 | rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n", | |
1911 | block->target[idx].target_name.byte); | |
1912 | break; | |
1913 | case ISCSI_BOOT_TGT_IP_ADDR: | |
1914 | if (ipv6_en) | |
1915 | rc = snprintf(str, ip_len, "%pI6\n", | |
1916 | block->target[idx].ipv6_addr.byte); | |
1917 | else | |
1918 | rc = snprintf(str, ip_len, "%pI4\n", | |
1919 | block->target[idx].ipv4_addr.byte); | |
1920 | break; | |
1921 | case ISCSI_BOOT_TGT_PORT: | |
1922 | rc = snprintf(str, 12, "%d\n", | |
1923 | GET_FIELD2(block->target[idx].generic_cont0, | |
1924 | NVM_ISCSI_CFG_TARGET_TCP_PORT)); | |
1925 | break; | |
1926 | case ISCSI_BOOT_TGT_LUN: | |
1927 | rc = snprintf(str, 22, "%.*d\n", | |
1928 | block->target[idx].lun.value[1], | |
1929 | block->target[idx].lun.value[0]); | |
1930 | break; | |
1931 | case ISCSI_BOOT_TGT_CHAP_NAME: | |
1932 | rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n", | |
1933 | chap_name); | |
1934 | break; | |
1935 | case ISCSI_BOOT_TGT_CHAP_SECRET: | |
1936 | rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n", | |
1937 | chap_secret); | |
1938 | break; | |
1939 | case ISCSI_BOOT_TGT_REV_CHAP_NAME: | |
1940 | rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n", | |
1941 | mchap_name); | |
1942 | break; | |
1943 | case ISCSI_BOOT_TGT_REV_CHAP_SECRET: | |
1944 | rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n", | |
1945 | mchap_secret); | |
1946 | break; | |
1947 | case ISCSI_BOOT_TGT_FLAGS: | |
1948 | rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); | |
1949 | break; | |
1950 | case ISCSI_BOOT_TGT_NIC_ASSOC: | |
1951 | rc = snprintf(str, 3, "0\n"); | |
1952 | break; | |
1953 | default: | |
1954 | rc = 0; | |
1955 | break; | |
1956 | } | |
1957 | ||
1958 | exit_show_tgt_info: | |
1959 | return rc; | |
1960 | } | |
1961 | ||
1962 | static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) | |
1963 | { | |
1964 | struct qedi_ctx *qedi = data; | |
1965 | ||
1966 | return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); | |
1967 | } | |
1968 | ||
1969 | static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) | |
1970 | { | |
1971 | struct qedi_ctx *qedi = data; | |
1972 | ||
1973 | return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); | |
1974 | } | |
1975 | ||
1976 | static umode_t qedi_tgt_get_attr_visibility(void *data, int type) | |
1977 | { | |
1978 | int rc; | |
1979 | ||
1980 | switch (type) { | |
1981 | case ISCSI_BOOT_TGT_NAME: | |
1982 | case ISCSI_BOOT_TGT_IP_ADDR: | |
1983 | case ISCSI_BOOT_TGT_PORT: | |
1984 | case ISCSI_BOOT_TGT_LUN: | |
1985 | case ISCSI_BOOT_TGT_CHAP_NAME: | |
1986 | case ISCSI_BOOT_TGT_CHAP_SECRET: | |
1987 | case ISCSI_BOOT_TGT_REV_CHAP_NAME: | |
1988 | case ISCSI_BOOT_TGT_REV_CHAP_SECRET: | |
1989 | case ISCSI_BOOT_TGT_NIC_ASSOC: | |
1990 | case ISCSI_BOOT_TGT_FLAGS: | |
1991 | rc = 0444; | |
1992 | break; | |
1993 | default: | |
1994 | rc = 0; | |
1995 | break; | |
1996 | } | |
1997 | return rc; | |
1998 | } | |
1999 | ||
2000 | static void qedi_boot_release(void *data) | |
2001 | { | |
2002 | struct qedi_ctx *qedi = data; | |
2003 | ||
2004 | scsi_host_put(qedi->shost); | |
2005 | } | |
2006 | ||
2007 | static int qedi_get_boot_info(struct qedi_ctx *qedi) | |
2008 | { | |
2009 | int ret = 1; | |
2010 | u16 len; | |
2011 | ||
2012 | len = sizeof(struct nvm_iscsi_cfg); | |
2013 | ||
2014 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
2015 | "Get NVM iSCSI CFG image\n"); | |
2016 | ret = qedi_ops->common->nvm_get_image(qedi->cdev, | |
2017 | QED_NVM_IMAGE_ISCSI_CFG, | |
2018 | (char *)qedi->iscsi_cfg, len); | |
2019 | if (ret) | |
2020 | QEDI_ERR(&qedi->dbg_ctx, | |
2021 | "Could not get NVM image. ret = %d\n", ret); | |
2022 | ||
2023 | return ret; | |
2024 | } | |
2025 | ||
2026 | static int qedi_setup_boot_info(struct qedi_ctx *qedi) | |
2027 | { | |
2028 | struct iscsi_boot_kobj *boot_kobj; | |
2029 | ||
2030 | if (qedi_get_boot_info(qedi)) | |
2031 | return -EPERM; | |
2032 | ||
2033 | qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); | |
2034 | if (!qedi->boot_kset) | |
2035 | goto kset_free; | |
2036 | ||
2037 | if (!scsi_host_get(qedi->shost)) | |
2038 | goto kset_free; | |
2039 | ||
2040 | boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, | |
2041 | qedi_show_boot_tgt_pri_info, | |
2042 | qedi_tgt_get_attr_visibility, | |
2043 | qedi_boot_release); | |
2044 | if (!boot_kobj) | |
2045 | goto put_host; | |
2046 | ||
2047 | if (!scsi_host_get(qedi->shost)) | |
2048 | goto kset_free; | |
2049 | ||
2050 | boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, | |
2051 | qedi_show_boot_tgt_sec_info, | |
2052 | qedi_tgt_get_attr_visibility, | |
2053 | qedi_boot_release); | |
2054 | if (!boot_kobj) | |
2055 | goto put_host; | |
2056 | ||
2057 | if (!scsi_host_get(qedi->shost)) | |
2058 | goto kset_free; | |
2059 | ||
2060 | boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, | |
2061 | qedi_show_boot_ini_info, | |
2062 | qedi_ini_get_attr_visibility, | |
2063 | qedi_boot_release); | |
2064 | if (!boot_kobj) | |
2065 | goto put_host; | |
2066 | ||
2067 | if (!scsi_host_get(qedi->shost)) | |
2068 | goto kset_free; | |
2069 | ||
2070 | boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, | |
2071 | qedi_show_boot_eth_info, | |
2072 | qedi_eth_get_attr_visibility, | |
2073 | qedi_boot_release); | |
2074 | if (!boot_kobj) | |
2075 | goto put_host; | |
2076 | ||
2077 | return 0; | |
2078 | ||
2079 | put_host: | |
2080 | scsi_host_put(qedi->shost); | |
2081 | kset_free: | |
2082 | iscsi_boot_destroy_kset(qedi->boot_kset); | |
2083 | return -ENOMEM; | |
2084 | } | |
2085 | ||
ace7f46b MR |
2086 | static void __qedi_remove(struct pci_dev *pdev, int mode) |
2087 | { | |
2088 | struct qedi_ctx *qedi = pci_get_drvdata(pdev); | |
2089 | ||
2090 | if (qedi->tmf_thread) { | |
2091 | flush_workqueue(qedi->tmf_thread); | |
2092 | destroy_workqueue(qedi->tmf_thread); | |
2093 | qedi->tmf_thread = NULL; | |
2094 | } | |
2095 | ||
2096 | if (qedi->offload_thread) { | |
2097 | flush_workqueue(qedi->offload_thread); | |
2098 | destroy_workqueue(qedi->offload_thread); | |
2099 | qedi->offload_thread = NULL; | |
2100 | } | |
2101 | ||
2102 | #ifdef CONFIG_DEBUG_FS | |
2103 | qedi_dbg_host_exit(&qedi->dbg_ctx); | |
2104 | #endif | |
2105 | if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) | |
2106 | qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); | |
2107 | ||
2108 | qedi_sync_free_irqs(qedi); | |
2109 | ||
2110 | if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { | |
2111 | qedi_ops->stop(qedi->cdev); | |
2112 | qedi_ops->ll2->stop(qedi->cdev); | |
2113 | } | |
2114 | ||
2115 | if (mode == QEDI_MODE_NORMAL) | |
2116 | qedi_free_iscsi_pf_param(qedi); | |
2117 | ||
2118 | if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { | |
2119 | qedi_ops->common->slowpath_stop(qedi->cdev); | |
2120 | qedi_ops->common->remove(qedi->cdev); | |
2121 | } | |
2122 | ||
2123 | qedi_destroy_fp(qedi); | |
2124 | ||
2125 | if (mode == QEDI_MODE_NORMAL) { | |
2126 | qedi_release_cid_que(qedi); | |
2127 | qedi_cm_free_mem(qedi); | |
2128 | qedi_free_uio(qedi->udev); | |
2129 | qedi_free_itt(qedi); | |
2130 | ||
2131 | iscsi_host_remove(qedi->shost); | |
2132 | iscsi_host_free(qedi->shost); | |
2133 | ||
2134 | if (qedi->ll2_recv_thread) { | |
2135 | kthread_stop(qedi->ll2_recv_thread); | |
2136 | qedi->ll2_recv_thread = NULL; | |
2137 | } | |
2138 | qedi_ll2_free_skbs(qedi); | |
c57ec8fb NJ |
2139 | |
2140 | if (qedi->boot_kset) | |
2141 | iscsi_boot_destroy_kset(qedi->boot_kset); | |
ace7f46b MR |
2142 | } |
2143 | } | |
2144 | ||
2145 | static int __qedi_probe(struct pci_dev *pdev, int mode) | |
2146 | { | |
2147 | struct qedi_ctx *qedi; | |
2148 | struct qed_ll2_params params; | |
2149 | u32 dp_module = 0; | |
2150 | u8 dp_level = 0; | |
2151 | bool is_vf = false; | |
2152 | char host_buf[16]; | |
2153 | struct qed_link_params link_params; | |
2154 | struct qed_slowpath_params sp_params; | |
2155 | struct qed_probe_params qed_params; | |
2156 | void *task_start, *task_end; | |
2157 | int rc; | |
2158 | u16 tmp; | |
2159 | ||
2160 | if (mode != QEDI_MODE_RECOVERY) { | |
2161 | qedi = qedi_host_alloc(pdev); | |
2162 | if (!qedi) { | |
2163 | rc = -ENOMEM; | |
2164 | goto exit_probe; | |
2165 | } | |
2166 | } else { | |
2167 | qedi = pci_get_drvdata(pdev); | |
2168 | } | |
2169 | ||
2170 | memset(&qed_params, 0, sizeof(qed_params)); | |
2171 | qed_params.protocol = QED_PROTOCOL_ISCSI; | |
2172 | qed_params.dp_module = dp_module; | |
2173 | qed_params.dp_level = dp_level; | |
2174 | qed_params.is_vf = is_vf; | |
2175 | qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); | |
2176 | if (!qedi->cdev) { | |
2177 | rc = -ENODEV; | |
2178 | QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); | |
2179 | goto free_host; | |
2180 | } | |
2181 | ||
2182 | qedi->msix_count = MAX_NUM_MSIX_PF; | |
2183 | atomic_set(&qedi->link_state, QEDI_LINK_DOWN); | |
2184 | ||
2185 | if (mode != QEDI_MODE_RECOVERY) { | |
2186 | rc = qedi_set_iscsi_pf_param(qedi); | |
2187 | if (rc) { | |
2188 | rc = -ENOMEM; | |
2189 | QEDI_ERR(&qedi->dbg_ctx, | |
2190 | "Set iSCSI pf param fail\n"); | |
2191 | goto free_host; | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); | |
2196 | ||
2197 | rc = qedi_prepare_fp(qedi); | |
2198 | if (rc) { | |
2199 | QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); | |
2200 | goto free_pf_params; | |
2201 | } | |
2202 | ||
2203 | /* Start the Slowpath-process */ | |
2204 | memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); | |
2205 | sp_params.int_mode = QED_INT_MODE_MSIX; | |
2206 | sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; | |
2207 | sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; | |
2208 | sp_params.drv_rev = QEDI_DRIVER_REV_VER; | |
2209 | sp_params.drv_eng = QEDI_DRIVER_ENG_VER; | |
2210 | strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); | |
2211 | rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); | |
2212 | if (rc) { | |
2213 | QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); | |
2214 | goto stop_hw; | |
2215 | } | |
2216 | ||
2217 | /* update_pf_params needs to be called before and after slowpath | |
2218 | * start | |
2219 | */ | |
2220 | qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); | |
2221 | ||
d1a9ccc4 | 2222 | rc = qedi_setup_int(qedi); |
ace7f46b MR |
2223 | if (rc) |
2224 | goto stop_iscsi_func; | |
2225 | ||
2226 | qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); | |
2227 | ||
2228 | /* Learn information crucial for qedi to progress */ | |
2229 | rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); | |
2230 | if (rc) | |
2231 | goto stop_iscsi_func; | |
2232 | ||
2233 | /* Record BDQ producer doorbell addresses */ | |
2234 | qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; | |
2235 | qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; | |
2236 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, | |
2237 | "BDQ primary_prod=%p secondary_prod=%p.\n", | |
2238 | qedi->bdq_primary_prod, | |
2239 | qedi->bdq_secondary_prod); | |
2240 | ||
2241 | /* | |
2242 | * We need to write the number of BDs in the BDQ we've preallocated so | |
2243 | * the f/w will do a prefetch and we'll get an unsolicited CQE when a | |
2244 | * packet arrives. | |
2245 | */ | |
2246 | qedi->bdq_prod_idx = QEDI_BDQ_NUM; | |
2247 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, | |
2248 | "Writing %d to primary and secondary BDQ doorbell registers.\n", | |
2249 | qedi->bdq_prod_idx); | |
2250 | writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); | |
2251 | tmp = readw(qedi->bdq_primary_prod); | |
2252 | writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); | |
2253 | tmp = readw(qedi->bdq_secondary_prod); | |
2254 | ||
2255 | ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); | |
2256 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", | |
2257 | qedi->mac); | |
2258 | ||
2259 | sprintf(host_buf, "host_%d", qedi->shost->host_no); | |
712c3cbf | 2260 | qedi_ops->common->set_name(qedi->cdev, host_buf); |
ace7f46b MR |
2261 | |
2262 | qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); | |
2263 | ||
2264 | memset(¶ms, 0, sizeof(params)); | |
2265 | params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; | |
2266 | qedi->ll2_mtu = DEF_PATH_MTU; | |
2267 | params.drop_ttl0_packets = 0; | |
2268 | params.rx_vlan_stripping = 1; | |
2269 | ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); | |
2270 | ||
2271 | if (mode != QEDI_MODE_RECOVERY) { | |
2272 | /* set up rx path */ | |
2273 | INIT_LIST_HEAD(&qedi->ll2_skb_list); | |
2274 | spin_lock_init(&qedi->ll2_lock); | |
2275 | /* start qedi context */ | |
2276 | spin_lock_init(&qedi->hba_lock); | |
2277 | spin_lock_init(&qedi->task_idx_lock); | |
2278 | } | |
2279 | qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); | |
2280 | qedi_ops->ll2->start(qedi->cdev, ¶ms); | |
2281 | ||
2282 | if (mode != QEDI_MODE_RECOVERY) { | |
2283 | qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, | |
2284 | (void *)qedi, | |
2285 | "qedi_ll2_thread"); | |
2286 | } | |
2287 | ||
2288 | rc = qedi_ops->start(qedi->cdev, &qedi->tasks, | |
2289 | qedi, qedi_iscsi_event_cb); | |
2290 | if (rc) { | |
2291 | rc = -ENODEV; | |
2292 | QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); | |
2293 | goto stop_slowpath; | |
2294 | } | |
2295 | ||
2296 | task_start = qedi_get_task_mem(&qedi->tasks, 0); | |
2297 | task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); | |
2298 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, | |
2299 | "Task context start=%p, end=%p block_size=%u.\n", | |
2300 | task_start, task_end, qedi->tasks.size); | |
2301 | ||
2302 | memset(&link_params, 0, sizeof(link_params)); | |
2303 | link_params.link_up = true; | |
2304 | rc = qedi_ops->common->set_link(qedi->cdev, &link_params); | |
2305 | if (rc) { | |
2306 | QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); | |
2307 | atomic_set(&qedi->link_state, QEDI_LINK_DOWN); | |
2308 | } | |
2309 | ||
2310 | #ifdef CONFIG_DEBUG_FS | |
2311 | qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops, | |
2312 | &qedi_dbg_fops); | |
2313 | #endif | |
2314 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
2315 | "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", | |
2316 | QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, | |
2317 | FW_REVISION_VERSION, FW_ENGINEERING_VERSION); | |
2318 | ||
2319 | if (mode == QEDI_MODE_NORMAL) { | |
2320 | if (iscsi_host_add(qedi->shost, &pdev->dev)) { | |
2321 | QEDI_ERR(&qedi->dbg_ctx, | |
2322 | "Could not add iscsi host\n"); | |
2323 | rc = -ENOMEM; | |
2324 | goto remove_host; | |
2325 | } | |
2326 | ||
2327 | /* Allocate uio buffers */ | |
2328 | rc = qedi_alloc_uio_rings(qedi); | |
2329 | if (rc) { | |
2330 | QEDI_ERR(&qedi->dbg_ctx, | |
2331 | "UIO alloc ring failed err=%d\n", rc); | |
2332 | goto remove_host; | |
2333 | } | |
2334 | ||
2335 | rc = qedi_init_uio(qedi); | |
2336 | if (rc) { | |
2337 | QEDI_ERR(&qedi->dbg_ctx, | |
2338 | "UIO init failed, err=%d\n", rc); | |
2339 | goto free_uio; | |
2340 | } | |
2341 | ||
2342 | /* host the array on iscsi_conn */ | |
2343 | rc = qedi_setup_cid_que(qedi); | |
2344 | if (rc) { | |
2345 | QEDI_ERR(&qedi->dbg_ctx, | |
2346 | "Could not setup cid que\n"); | |
2347 | goto free_uio; | |
2348 | } | |
2349 | ||
2350 | rc = qedi_cm_alloc_mem(qedi); | |
2351 | if (rc) { | |
2352 | QEDI_ERR(&qedi->dbg_ctx, | |
2353 | "Could not alloc cm memory\n"); | |
2354 | goto free_cid_que; | |
2355 | } | |
2356 | ||
2357 | rc = qedi_alloc_itt(qedi); | |
2358 | if (rc) { | |
2359 | QEDI_ERR(&qedi->dbg_ctx, | |
2360 | "Could not alloc itt memory\n"); | |
2361 | goto free_cid_que; | |
2362 | } | |
2363 | ||
2364 | sprintf(host_buf, "host_%d", qedi->shost->host_no); | |
2365 | qedi->tmf_thread = create_singlethread_workqueue(host_buf); | |
2366 | if (!qedi->tmf_thread) { | |
2367 | QEDI_ERR(&qedi->dbg_ctx, | |
2368 | "Unable to start tmf thread!\n"); | |
2369 | rc = -ENODEV; | |
2370 | goto free_cid_que; | |
2371 | } | |
2372 | ||
2373 | sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); | |
2374 | qedi->offload_thread = create_workqueue(host_buf); | |
2375 | if (!qedi->offload_thread) { | |
2376 | QEDI_ERR(&qedi->dbg_ctx, | |
2377 | "Unable to start offload thread!\n"); | |
2378 | rc = -ENODEV; | |
2379 | goto free_cid_que; | |
2380 | } | |
2381 | ||
2382 | /* F/w needs 1st task context memory entry for performance */ | |
2383 | set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); | |
2384 | atomic_set(&qedi->num_offloads, 0); | |
c57ec8fb NJ |
2385 | |
2386 | if (qedi_setup_boot_info(qedi)) | |
2387 | QEDI_ERR(&qedi->dbg_ctx, | |
2388 | "No iSCSI boot target configured\n"); | |
ace7f46b MR |
2389 | } |
2390 | ||
2391 | return 0; | |
2392 | ||
2393 | free_cid_que: | |
2394 | qedi_release_cid_que(qedi); | |
2395 | free_uio: | |
2396 | qedi_free_uio(qedi->udev); | |
2397 | remove_host: | |
2398 | #ifdef CONFIG_DEBUG_FS | |
2399 | qedi_dbg_host_exit(&qedi->dbg_ctx); | |
2400 | #endif | |
2401 | iscsi_host_remove(qedi->shost); | |
2402 | stop_iscsi_func: | |
2403 | qedi_ops->stop(qedi->cdev); | |
2404 | stop_slowpath: | |
2405 | qedi_ops->common->slowpath_stop(qedi->cdev); | |
2406 | stop_hw: | |
2407 | qedi_ops->common->remove(qedi->cdev); | |
2408 | free_pf_params: | |
2409 | qedi_free_iscsi_pf_param(qedi); | |
2410 | free_host: | |
2411 | iscsi_host_free(qedi->shost); | |
2412 | exit_probe: | |
2413 | return rc; | |
2414 | } | |
2415 | ||
2416 | static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
2417 | { | |
2418 | return __qedi_probe(pdev, QEDI_MODE_NORMAL); | |
2419 | } | |
2420 | ||
2421 | static void qedi_remove(struct pci_dev *pdev) | |
2422 | { | |
2423 | __qedi_remove(pdev, QEDI_MODE_NORMAL); | |
2424 | } | |
2425 | ||
2426 | static struct pci_device_id qedi_pci_tbl[] = { | |
2427 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, | |
04688525 | 2428 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, |
ace7f46b MR |
2429 | { 0 }, |
2430 | }; | |
2431 | MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); | |
2432 | ||
a98d1a0c TG |
2433 | static enum cpuhp_state qedi_cpuhp_state; |
2434 | ||
ace7f46b MR |
2435 | static struct pci_driver qedi_pci_driver = { |
2436 | .name = QEDI_MODULE_NAME, | |
2437 | .id_table = qedi_pci_tbl, | |
2438 | .probe = qedi_probe, | |
2439 | .remove = qedi_remove, | |
2440 | }; | |
2441 | ||
2442 | static int __init qedi_init(void) | |
2443 | { | |
ace7f46b | 2444 | struct qedi_percpu_s *p; |
a98d1a0c | 2445 | int cpu, rc = 0; |
ace7f46b MR |
2446 | |
2447 | qedi_ops = qed_get_iscsi_ops(); | |
2448 | if (!qedi_ops) { | |
2449 | QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); | |
a98d1a0c | 2450 | return -EINVAL; |
ace7f46b MR |
2451 | } |
2452 | ||
2453 | #ifdef CONFIG_DEBUG_FS | |
2454 | qedi_dbg_init("qedi"); | |
2455 | #endif | |
2456 | ||
2457 | qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); | |
2458 | if (!qedi_scsi_transport) { | |
2459 | QEDI_ERR(NULL, "Could not register qedi transport"); | |
2460 | rc = -ENOMEM; | |
2461 | goto exit_qedi_init_1; | |
2462 | } | |
2463 | ||
ace7f46b MR |
2464 | for_each_possible_cpu(cpu) { |
2465 | p = &per_cpu(qedi_percpu, cpu); | |
2466 | INIT_LIST_HEAD(&p->work_list); | |
2467 | spin_lock_init(&p->p_work_lock); | |
2468 | p->iothread = NULL; | |
2469 | } | |
2470 | ||
a98d1a0c TG |
2471 | rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", |
2472 | qedi_cpu_online, qedi_cpu_offline); | |
2473 | if (rc < 0) | |
2474 | goto exit_qedi_init_2; | |
2475 | qedi_cpuhp_state = rc; | |
ace7f46b | 2476 | |
a98d1a0c TG |
2477 | rc = pci_register_driver(&qedi_pci_driver); |
2478 | if (rc) { | |
2479 | QEDI_ERR(NULL, "Failed to register driver\n"); | |
2480 | goto exit_qedi_hp; | |
2481 | } | |
2482 | ||
2483 | return 0; | |
ace7f46b | 2484 | |
a98d1a0c TG |
2485 | exit_qedi_hp: |
2486 | cpuhp_remove_state(qedi_cpuhp_state); | |
ace7f46b MR |
2487 | exit_qedi_init_2: |
2488 | iscsi_unregister_transport(&qedi_iscsi_transport); | |
2489 | exit_qedi_init_1: | |
2490 | #ifdef CONFIG_DEBUG_FS | |
2491 | qedi_dbg_exit(); | |
2492 | #endif | |
2493 | qed_put_iscsi_ops(); | |
ace7f46b MR |
2494 | return rc; |
2495 | } | |
2496 | ||
2497 | static void __exit qedi_cleanup(void) | |
2498 | { | |
ace7f46b | 2499 | pci_unregister_driver(&qedi_pci_driver); |
a98d1a0c | 2500 | cpuhp_remove_state(qedi_cpuhp_state); |
ace7f46b MR |
2501 | iscsi_unregister_transport(&qedi_iscsi_transport); |
2502 | ||
2503 | #ifdef CONFIG_DEBUG_FS | |
2504 | qedi_dbg_exit(); | |
2505 | #endif | |
2506 | qed_put_iscsi_ops(); | |
2507 | } | |
2508 | ||
2509 | MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); | |
2510 | MODULE_LICENSE("GPL"); | |
2511 | MODULE_AUTHOR("QLogic Corporation"); | |
2512 | MODULE_VERSION(QEDI_MODULE_VERSION); | |
2513 | module_init(qedi_init); | |
2514 | module_exit(qedi_cleanup); |