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/blkdev.h> |
8 | #include <scsi/scsi_tcq.h> |
9 | #include <linux/delay.h> |
10 | |
11 | #include "qedi.h" |
12 | #include "qedi_iscsi.h" |
13 | #include "qedi_gbl.h" |
14 | #include "qedi_fw_iscsi.h" |
15 | #include "qedi_fw_scsi.h" |
16 | |
17 | static int send_iscsi_tmf(struct qedi_conn *qedi_conn, |
18 | struct iscsi_task *mtask, struct iscsi_task *ctask); |
19 | |
20 | void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd) |
21 | { |
22 | struct scsi_cmnd *sc = cmd->scsi_cmd; |
23 | |
24 | if (cmd->io_tbl.sge_valid && sc) { |
25 | cmd->io_tbl.sge_valid = 0; |
26 | scsi_dma_unmap(cmd: sc); |
27 | } |
28 | } |
29 | |
30 | static void qedi_process_logout_resp(struct qedi_ctx *qedi, |
31 | union iscsi_cqe *cqe, |
32 | struct iscsi_task *task, |
33 | struct qedi_conn *qedi_conn) |
34 | { |
35 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
36 | struct iscsi_logout_rsp *resp_hdr; |
37 | struct iscsi_session *session = conn->session; |
38 | struct iscsi_logout_response_hdr *cqe_logout_response; |
39 | struct qedi_cmd *cmd; |
40 | |
41 | cmd = (struct qedi_cmd *)task->dd_data; |
42 | cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response; |
43 | spin_lock(lock: &session->back_lock); |
44 | resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr; |
45 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
46 | resp_hdr->opcode = cqe_logout_response->opcode; |
47 | resp_hdr->flags = cqe_logout_response->flags; |
48 | resp_hdr->hlength = 0; |
49 | |
50 | resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); |
51 | resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn); |
52 | resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn); |
53 | resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn); |
54 | |
55 | resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time_2_wait); |
56 | resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time_2_retain); |
57 | |
58 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
59 | "Freeing tid=0x%x for cid=0x%x\n" , |
60 | cmd->task_id, qedi_conn->iscsi_conn_id); |
61 | |
62 | spin_lock(lock: &qedi_conn->list_lock); |
63 | if (likely(cmd->io_cmd_in_list)) { |
64 | cmd->io_cmd_in_list = false; |
65 | list_del_init(entry: &cmd->io_cmd); |
66 | qedi_conn->active_cmd_count--; |
67 | } else { |
68 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
69 | "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n" , |
70 | cmd->task_id, qedi_conn->iscsi_conn_id, |
71 | &cmd->io_cmd); |
72 | } |
73 | spin_unlock(lock: &qedi_conn->list_lock); |
74 | |
75 | cmd->state = RESPONSE_RECEIVED; |
76 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); |
77 | |
78 | spin_unlock(lock: &session->back_lock); |
79 | } |
80 | |
81 | static void qedi_process_text_resp(struct qedi_ctx *qedi, |
82 | union iscsi_cqe *cqe, |
83 | struct iscsi_task *task, |
84 | struct qedi_conn *qedi_conn) |
85 | { |
86 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
87 | struct iscsi_session *session = conn->session; |
88 | struct iscsi_task_context *task_ctx; |
89 | struct iscsi_text_rsp *resp_hdr_ptr; |
90 | struct iscsi_text_response_hdr *cqe_text_response; |
91 | struct qedi_cmd *cmd; |
92 | int pld_len; |
93 | |
94 | cmd = (struct qedi_cmd *)task->dd_data; |
95 | task_ctx = qedi_get_task_mem(info: &qedi->tasks, tid: cmd->task_id); |
96 | |
97 | cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response; |
98 | spin_lock(lock: &session->back_lock); |
99 | resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr; |
100 | memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr)); |
101 | resp_hdr_ptr->opcode = cqe_text_response->opcode; |
102 | resp_hdr_ptr->flags = cqe_text_response->flags; |
103 | resp_hdr_ptr->hlength = 0; |
104 | |
105 | hton24(resp_hdr_ptr->dlength, |
106 | (cqe_text_response->hdr_second_dword & |
107 | ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK)); |
108 | |
109 | resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, |
110 | conn->session->age); |
111 | resp_hdr_ptr->ttt = cqe_text_response->ttt; |
112 | resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn); |
113 | resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn); |
114 | resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn); |
115 | |
116 | pld_len = cqe_text_response->hdr_second_dword & |
117 | ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK; |
118 | qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; |
119 | |
120 | memset(task_ctx, '\0', sizeof(*task_ctx)); |
121 | |
122 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
123 | "Freeing tid=0x%x for cid=0x%x\n" , |
124 | cmd->task_id, qedi_conn->iscsi_conn_id); |
125 | |
126 | spin_lock(lock: &qedi_conn->list_lock); |
127 | if (likely(cmd->io_cmd_in_list)) { |
128 | cmd->io_cmd_in_list = false; |
129 | list_del_init(entry: &cmd->io_cmd); |
130 | qedi_conn->active_cmd_count--; |
131 | } else { |
132 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
133 | "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n" , |
134 | cmd->task_id, qedi_conn->iscsi_conn_id, |
135 | &cmd->io_cmd); |
136 | } |
137 | spin_unlock(lock: &qedi_conn->list_lock); |
138 | |
139 | cmd->state = RESPONSE_RECEIVED; |
140 | |
141 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, |
142 | qedi_conn->gen_pdu.resp_buf, |
143 | (qedi_conn->gen_pdu.resp_wr_ptr - |
144 | qedi_conn->gen_pdu.resp_buf)); |
145 | spin_unlock(lock: &session->back_lock); |
146 | } |
147 | |
148 | static void qedi_tmf_resp_work(struct work_struct *work) |
149 | { |
150 | struct qedi_cmd *qedi_cmd = |
151 | container_of(work, struct qedi_cmd, tmf_work); |
152 | struct qedi_conn *qedi_conn = qedi_cmd->conn; |
153 | struct qedi_ctx *qedi = qedi_conn->qedi; |
154 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
155 | struct iscsi_session *session = conn->session; |
156 | struct iscsi_tm_rsp *resp_hdr_ptr; |
157 | int rval = 0; |
158 | |
159 | resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; |
160 | |
161 | rval = qedi_cleanup_all_io(qedi, qedi_conn, task: qedi_cmd->task, in_recovery: true); |
162 | if (rval) |
163 | goto exit_tmf_resp; |
164 | |
165 | spin_lock(lock: &session->back_lock); |
166 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); |
167 | spin_unlock(lock: &session->back_lock); |
168 | |
169 | exit_tmf_resp: |
170 | kfree(objp: resp_hdr_ptr); |
171 | |
172 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
173 | qedi_conn->fw_cleanup_works--; |
174 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
175 | } |
176 | |
177 | static void qedi_process_tmf_resp(struct qedi_ctx *qedi, |
178 | union iscsi_cqe *cqe, |
179 | struct iscsi_task *task, |
180 | struct qedi_conn *qedi_conn) |
181 | |
182 | { |
183 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
184 | struct iscsi_session *session = conn->session; |
185 | struct iscsi_tmf_response_hdr *cqe_tmp_response; |
186 | struct iscsi_tm_rsp *resp_hdr_ptr; |
187 | struct iscsi_tm *tmf_hdr; |
188 | struct qedi_cmd *qedi_cmd = NULL; |
189 | |
190 | cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response; |
191 | |
192 | qedi_cmd = task->dd_data; |
193 | qedi_cmd->tmf_resp_buf = kzalloc(size: sizeof(*resp_hdr_ptr), GFP_ATOMIC); |
194 | if (!qedi_cmd->tmf_resp_buf) { |
195 | QEDI_ERR(&qedi->dbg_ctx, |
196 | "Failed to allocate resp buf, cid=0x%x\n" , |
197 | qedi_conn->iscsi_conn_id); |
198 | return; |
199 | } |
200 | |
201 | spin_lock(lock: &session->back_lock); |
202 | resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; |
203 | memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp)); |
204 | |
205 | /* Fill up the header */ |
206 | resp_hdr_ptr->opcode = cqe_tmp_response->opcode; |
207 | resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags; |
208 | resp_hdr_ptr->response = cqe_tmp_response->hdr_response; |
209 | resp_hdr_ptr->hlength = 0; |
210 | |
211 | hton24(resp_hdr_ptr->dlength, |
212 | (cqe_tmp_response->hdr_second_dword & |
213 | ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK)); |
214 | resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, |
215 | conn->session->age); |
216 | resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn); |
217 | resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn); |
218 | resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn); |
219 | |
220 | tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr; |
221 | |
222 | spin_lock(lock: &qedi_conn->list_lock); |
223 | if (likely(qedi_cmd->io_cmd_in_list)) { |
224 | qedi_cmd->io_cmd_in_list = false; |
225 | list_del_init(entry: &qedi_cmd->io_cmd); |
226 | qedi_conn->active_cmd_count--; |
227 | } |
228 | spin_unlock(lock: &qedi_conn->list_lock); |
229 | |
230 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
231 | switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { |
232 | case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET: |
233 | case ISCSI_TM_FUNC_TARGET_WARM_RESET: |
234 | case ISCSI_TM_FUNC_TARGET_COLD_RESET: |
235 | if (qedi_conn->ep_disconnect_starting) { |
236 | /* Session is down so ep_disconnect will clean up */ |
237 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
238 | goto unblock_sess; |
239 | } |
240 | |
241 | qedi_conn->fw_cleanup_works++; |
242 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
243 | |
244 | INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work); |
245 | queue_work(wq: qedi->tmf_thread, work: &qedi_cmd->tmf_work); |
246 | goto unblock_sess; |
247 | } |
248 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
249 | |
250 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); |
251 | kfree(objp: resp_hdr_ptr); |
252 | |
253 | unblock_sess: |
254 | spin_unlock(lock: &session->back_lock); |
255 | } |
256 | |
257 | static void qedi_process_login_resp(struct qedi_ctx *qedi, |
258 | union iscsi_cqe *cqe, |
259 | struct iscsi_task *task, |
260 | struct qedi_conn *qedi_conn) |
261 | { |
262 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
263 | struct iscsi_session *session = conn->session; |
264 | struct iscsi_task_context *task_ctx; |
265 | struct iscsi_login_rsp *resp_hdr_ptr; |
266 | struct iscsi_login_response_hdr *cqe_login_response; |
267 | struct qedi_cmd *cmd; |
268 | int pld_len; |
269 | |
270 | cmd = (struct qedi_cmd *)task->dd_data; |
271 | |
272 | cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response; |
273 | task_ctx = qedi_get_task_mem(info: &qedi->tasks, tid: cmd->task_id); |
274 | |
275 | spin_lock(lock: &session->back_lock); |
276 | resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr; |
277 | memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp)); |
278 | resp_hdr_ptr->opcode = cqe_login_response->opcode; |
279 | resp_hdr_ptr->flags = cqe_login_response->flags_attr; |
280 | resp_hdr_ptr->hlength = 0; |
281 | |
282 | hton24(resp_hdr_ptr->dlength, |
283 | (cqe_login_response->hdr_second_dword & |
284 | ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK)); |
285 | resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, |
286 | conn->session->age); |
287 | resp_hdr_ptr->tsih = cqe_login_response->tsih; |
288 | resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn); |
289 | resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn); |
290 | resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn); |
291 | resp_hdr_ptr->status_class = cqe_login_response->status_class; |
292 | resp_hdr_ptr->status_detail = cqe_login_response->status_detail; |
293 | pld_len = cqe_login_response->hdr_second_dword & |
294 | ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK; |
295 | qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; |
296 | |
297 | spin_lock(lock: &qedi_conn->list_lock); |
298 | if (likely(cmd->io_cmd_in_list)) { |
299 | cmd->io_cmd_in_list = false; |
300 | list_del_init(entry: &cmd->io_cmd); |
301 | qedi_conn->active_cmd_count--; |
302 | } |
303 | spin_unlock(lock: &qedi_conn->list_lock); |
304 | |
305 | memset(task_ctx, '\0', sizeof(*task_ctx)); |
306 | |
307 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, |
308 | qedi_conn->gen_pdu.resp_buf, |
309 | (qedi_conn->gen_pdu.resp_wr_ptr - |
310 | qedi_conn->gen_pdu.resp_buf)); |
311 | |
312 | spin_unlock(lock: &session->back_lock); |
313 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
314 | "Freeing tid=0x%x for cid=0x%x\n" , |
315 | cmd->task_id, qedi_conn->iscsi_conn_id); |
316 | cmd->state = RESPONSE_RECEIVED; |
317 | } |
318 | |
319 | static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi, |
320 | struct iscsi_cqe_unsolicited *cqe, |
321 | char *ptr, int len) |
322 | { |
323 | u16 idx = 0; |
324 | |
325 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
326 | "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n" , |
327 | len, qedi->bdq_prod_idx, |
328 | (qedi->bdq_prod_idx % qedi->rq_num_entries)); |
329 | |
330 | /* Obtain buffer address from rqe_opaque */ |
331 | idx = cqe->rqe_opaque; |
332 | if (idx > (QEDI_BDQ_NUM - 1)) { |
333 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
334 | "wrong idx %d returned by FW, dropping the unsolicited pkt\n" , |
335 | idx); |
336 | return; |
337 | } |
338 | |
339 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
340 | "rqe_opaque [0x%p], idx [%d]\n" , cqe->rqe_opaque, idx); |
341 | |
342 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
343 | "unsol_cqe_type = %d\n" , cqe->unsol_cqe_type); |
344 | switch (cqe->unsol_cqe_type) { |
345 | case ISCSI_CQE_UNSOLICITED_SINGLE: |
346 | case ISCSI_CQE_UNSOLICITED_FIRST: |
347 | if (len) |
348 | memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len); |
349 | break; |
350 | case ISCSI_CQE_UNSOLICITED_MIDDLE: |
351 | case ISCSI_CQE_UNSOLICITED_LAST: |
352 | break; |
353 | default: |
354 | break; |
355 | } |
356 | } |
357 | |
358 | static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi, |
359 | struct iscsi_cqe_unsolicited *cqe, |
360 | int count) |
361 | { |
362 | u16 idx = 0; |
363 | struct scsi_bd *pbl; |
364 | |
365 | /* Obtain buffer address from rqe_opaque */ |
366 | idx = cqe->rqe_opaque; |
367 | if (idx > (QEDI_BDQ_NUM - 1)) { |
368 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
369 | "wrong idx %d returned by FW, dropping the unsolicited pkt\n" , |
370 | idx); |
371 | return; |
372 | } |
373 | |
374 | pbl = (struct scsi_bd *)qedi->bdq_pbl; |
375 | pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries); |
376 | pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma)); |
377 | pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma)); |
378 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
379 | "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n" , |
380 | pbl, pbl->address.hi, pbl->address.lo, idx); |
381 | pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; |
382 | pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; |
383 | pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; |
384 | pbl->opaque.iscsi_opaque.opaque = cpu_to_le32(idx); |
385 | |
386 | /* Increment producer to let f/w know we've handled the frame */ |
387 | qedi->bdq_prod_idx += count; |
388 | |
389 | writew(val: qedi->bdq_prod_idx, addr: qedi->bdq_primary_prod); |
390 | readw(addr: qedi->bdq_primary_prod); |
391 | |
392 | writew(val: qedi->bdq_prod_idx, addr: qedi->bdq_secondary_prod); |
393 | readw(addr: qedi->bdq_secondary_prod); |
394 | } |
395 | |
396 | static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi, |
397 | struct iscsi_cqe_unsolicited *cqe, |
398 | u32 pdu_len, u32 num_bdqs, |
399 | char *bdq_data) |
400 | { |
401 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
402 | "num_bdqs [%d]\n" , num_bdqs); |
403 | |
404 | qedi_get_rq_bdq_buf(qedi, cqe, ptr: bdq_data, len: pdu_len); |
405 | qedi_put_rq_bdq_buf(qedi, cqe, count: (num_bdqs + 1)); |
406 | } |
407 | |
408 | static int qedi_process_nopin_mesg(struct qedi_ctx *qedi, |
409 | union iscsi_cqe *cqe, |
410 | struct iscsi_task *task, |
411 | struct qedi_conn *qedi_conn, u16 que_idx) |
412 | { |
413 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
414 | struct iscsi_session *session = conn->session; |
415 | struct iscsi_nop_in_hdr *cqe_nop_in; |
416 | struct iscsi_nopin *hdr; |
417 | struct qedi_cmd *cmd; |
418 | int tgt_async_nop = 0; |
419 | u32 lun[2]; |
420 | u32 pdu_len, num_bdqs; |
421 | char bdq_data[QEDI_BDQ_BUF_SIZE]; |
422 | unsigned long flags; |
423 | |
424 | spin_lock_bh(lock: &session->back_lock); |
425 | cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in; |
426 | |
427 | pdu_len = cqe_nop_in->hdr_second_dword & |
428 | ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK; |
429 | num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; |
430 | |
431 | hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr; |
432 | memset(hdr, 0, sizeof(struct iscsi_hdr)); |
433 | hdr->opcode = cqe_nop_in->opcode; |
434 | hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn); |
435 | hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn); |
436 | hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn); |
437 | hdr->ttt = cpu_to_be32(cqe_nop_in->ttt); |
438 | |
439 | if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { |
440 | spin_lock_irqsave(&qedi->hba_lock, flags); |
441 | qedi_unsol_pdu_adjust_bdq(qedi, cqe: &cqe->cqe_unsolicited, |
442 | pdu_len, num_bdqs, bdq_data); |
443 | hdr->itt = RESERVED_ITT; |
444 | tgt_async_nop = 1; |
445 | spin_unlock_irqrestore(lock: &qedi->hba_lock, flags); |
446 | goto done; |
447 | } |
448 | |
449 | /* Response to one of our nop-outs */ |
450 | if (task) { |
451 | cmd = task->dd_data; |
452 | hdr->flags = ISCSI_FLAG_CMD_FINAL; |
453 | hdr->itt = build_itt(cqe->cqe_solicited.itid, |
454 | conn->session->age); |
455 | lun[0] = 0xffffffff; |
456 | lun[1] = 0xffffffff; |
457 | memcpy(&hdr->lun, lun, sizeof(struct scsi_lun)); |
458 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
459 | "Freeing tid=0x%x for cid=0x%x\n" , |
460 | cmd->task_id, qedi_conn->iscsi_conn_id); |
461 | cmd->state = RESPONSE_RECEIVED; |
462 | spin_lock(lock: &qedi_conn->list_lock); |
463 | if (likely(cmd->io_cmd_in_list)) { |
464 | cmd->io_cmd_in_list = false; |
465 | list_del_init(entry: &cmd->io_cmd); |
466 | qedi_conn->active_cmd_count--; |
467 | } |
468 | |
469 | spin_unlock(lock: &qedi_conn->list_lock); |
470 | } |
471 | |
472 | done: |
473 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len); |
474 | |
475 | spin_unlock_bh(lock: &session->back_lock); |
476 | return tgt_async_nop; |
477 | } |
478 | |
479 | static void qedi_process_async_mesg(struct qedi_ctx *qedi, |
480 | union iscsi_cqe *cqe, |
481 | struct iscsi_task *task, |
482 | struct qedi_conn *qedi_conn, |
483 | u16 que_idx) |
484 | { |
485 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
486 | struct iscsi_session *session = conn->session; |
487 | struct iscsi_async_msg_hdr *cqe_async_msg; |
488 | struct iscsi_async *resp_hdr; |
489 | u32 lun[2]; |
490 | u32 pdu_len, num_bdqs; |
491 | char bdq_data[QEDI_BDQ_BUF_SIZE]; |
492 | unsigned long flags; |
493 | |
494 | spin_lock_bh(lock: &session->back_lock); |
495 | |
496 | cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg; |
497 | pdu_len = cqe_async_msg->hdr_second_dword & |
498 | ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK; |
499 | num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; |
500 | |
501 | if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { |
502 | spin_lock_irqsave(&qedi->hba_lock, flags); |
503 | qedi_unsol_pdu_adjust_bdq(qedi, cqe: &cqe->cqe_unsolicited, |
504 | pdu_len, num_bdqs, bdq_data); |
505 | spin_unlock_irqrestore(lock: &qedi->hba_lock, flags); |
506 | } |
507 | |
508 | resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr; |
509 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
510 | resp_hdr->opcode = cqe_async_msg->opcode; |
511 | resp_hdr->flags = 0x80; |
512 | |
513 | lun[0] = cpu_to_be32(cqe_async_msg->lun.lo); |
514 | lun[1] = cpu_to_be32(cqe_async_msg->lun.hi); |
515 | memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun)); |
516 | resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn); |
517 | resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn); |
518 | resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn); |
519 | |
520 | resp_hdr->async_event = cqe_async_msg->async_event; |
521 | resp_hdr->async_vcode = cqe_async_msg->async_vcode; |
522 | |
523 | resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv); |
524 | resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv); |
525 | resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv); |
526 | |
527 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data, |
528 | pdu_len); |
529 | |
530 | spin_unlock_bh(lock: &session->back_lock); |
531 | } |
532 | |
533 | static void qedi_process_reject_mesg(struct qedi_ctx *qedi, |
534 | union iscsi_cqe *cqe, |
535 | struct iscsi_task *task, |
536 | struct qedi_conn *qedi_conn, |
537 | uint16_t que_idx) |
538 | { |
539 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
540 | struct iscsi_session *session = conn->session; |
541 | struct iscsi_reject_hdr *cqe_reject; |
542 | struct iscsi_reject *hdr; |
543 | u32 pld_len, num_bdqs; |
544 | unsigned long flags; |
545 | |
546 | spin_lock_bh(lock: &session->back_lock); |
547 | cqe_reject = &cqe->cqe_common.iscsi_hdr.reject; |
548 | pld_len = cqe_reject->hdr_second_dword & |
549 | ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK; |
550 | num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE; |
551 | |
552 | if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { |
553 | spin_lock_irqsave(&qedi->hba_lock, flags); |
554 | qedi_unsol_pdu_adjust_bdq(qedi, cqe: &cqe->cqe_unsolicited, |
555 | pdu_len: pld_len, num_bdqs, bdq_data: conn->data); |
556 | spin_unlock_irqrestore(lock: &qedi->hba_lock, flags); |
557 | } |
558 | hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr; |
559 | memset(hdr, 0, sizeof(struct iscsi_hdr)); |
560 | hdr->opcode = cqe_reject->opcode; |
561 | hdr->reason = cqe_reject->hdr_reason; |
562 | hdr->flags = cqe_reject->hdr_flags; |
563 | hton24(hdr->dlength, (cqe_reject->hdr_second_dword & |
564 | ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK)); |
565 | hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn); |
566 | hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn); |
567 | hdr->statsn = cpu_to_be32(cqe_reject->stat_sn); |
568 | hdr->ffffffff = cpu_to_be32(0xffffffff); |
569 | |
570 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, |
571 | conn->data, pld_len); |
572 | spin_unlock_bh(lock: &session->back_lock); |
573 | } |
574 | |
575 | static void qedi_scsi_completion(struct qedi_ctx *qedi, |
576 | union iscsi_cqe *cqe, |
577 | struct iscsi_task *task, |
578 | struct iscsi_conn *conn) |
579 | { |
580 | struct scsi_cmnd *sc_cmd; |
581 | struct qedi_cmd *cmd = task->dd_data; |
582 | struct iscsi_session *session = conn->session; |
583 | struct iscsi_scsi_rsp *hdr; |
584 | struct iscsi_data_in_hdr *cqe_data_in; |
585 | int datalen = 0; |
586 | struct qedi_conn *qedi_conn; |
587 | u32 iscsi_cid; |
588 | u8 cqe_err_bits = 0; |
589 | |
590 | iscsi_cid = cqe->cqe_common.conn_id; |
591 | qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
592 | |
593 | cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in; |
594 | cqe_err_bits = |
595 | cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; |
596 | |
597 | spin_lock_bh(lock: &session->back_lock); |
598 | /* get the scsi command */ |
599 | sc_cmd = cmd->scsi_cmd; |
600 | |
601 | if (!sc_cmd) { |
602 | QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n" ); |
603 | goto error; |
604 | } |
605 | |
606 | if (!iscsi_cmd(cmd: sc_cmd)->task) { |
607 | QEDI_WARN(&qedi->dbg_ctx, |
608 | "NULL task pointer, returned in another context.\n" ); |
609 | goto error; |
610 | } |
611 | |
612 | if (!scsi_cmd_to_rq(scmd: sc_cmd)->q) { |
613 | QEDI_WARN(&qedi->dbg_ctx, |
614 | "request->q is NULL so request is not valid, sc_cmd=%p.\n" , |
615 | sc_cmd); |
616 | goto error; |
617 | } |
618 | |
619 | qedi_iscsi_unmap_sg_list(cmd); |
620 | |
621 | hdr = (struct iscsi_scsi_rsp *)task->hdr; |
622 | hdr->opcode = cqe_data_in->opcode; |
623 | hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn); |
624 | hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn); |
625 | hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); |
626 | hdr->response = cqe_data_in->reserved1; |
627 | hdr->cmd_status = cqe_data_in->status_rsvd; |
628 | hdr->flags = cqe_data_in->flags; |
629 | hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count); |
630 | |
631 | if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) { |
632 | datalen = cqe_data_in->reserved2 & |
633 | ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK; |
634 | memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen); |
635 | } |
636 | |
637 | /* If f/w reports data underrun err then set residual to IO transfer |
638 | * length, set Underrun flag and clear Overrun flag explicitly |
639 | */ |
640 | if (unlikely(cqe_err_bits && |
641 | GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) { |
642 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
643 | "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n" , |
644 | hdr->itt, cqe_data_in->flags, cmd->task_id, |
645 | qedi_conn->iscsi_conn_id, hdr->residual_count, |
646 | scsi_bufflen(sc_cmd)); |
647 | hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd)); |
648 | hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW; |
649 | hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW); |
650 | } |
651 | |
652 | spin_lock(lock: &qedi_conn->list_lock); |
653 | if (likely(cmd->io_cmd_in_list)) { |
654 | cmd->io_cmd_in_list = false; |
655 | list_del_init(entry: &cmd->io_cmd); |
656 | qedi_conn->active_cmd_count--; |
657 | } |
658 | spin_unlock(lock: &qedi_conn->list_lock); |
659 | |
660 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, |
661 | "Freeing tid=0x%x for cid=0x%x\n" , |
662 | cmd->task_id, qedi_conn->iscsi_conn_id); |
663 | cmd->state = RESPONSE_RECEIVED; |
664 | if (qedi_io_tracing) |
665 | qedi_trace_io(qedi, task, tid: cmd->task_id, QEDI_IO_TRACE_RSP); |
666 | |
667 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, |
668 | conn->data, datalen); |
669 | error: |
670 | spin_unlock_bh(lock: &session->back_lock); |
671 | } |
672 | |
673 | static void qedi_mtask_completion(struct qedi_ctx *qedi, |
674 | union iscsi_cqe *cqe, |
675 | struct iscsi_task *task, |
676 | struct qedi_conn *conn, uint16_t que_idx) |
677 | { |
678 | struct iscsi_conn *iscsi_conn; |
679 | u32 hdr_opcode; |
680 | |
681 | hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; |
682 | iscsi_conn = conn->cls_conn->dd_data; |
683 | |
684 | switch (hdr_opcode) { |
685 | case ISCSI_OPCODE_SCSI_RESPONSE: |
686 | case ISCSI_OPCODE_DATA_IN: |
687 | qedi_scsi_completion(qedi, cqe, task, conn: iscsi_conn); |
688 | break; |
689 | case ISCSI_OPCODE_LOGIN_RESPONSE: |
690 | qedi_process_login_resp(qedi, cqe, task, qedi_conn: conn); |
691 | break; |
692 | case ISCSI_OPCODE_TMF_RESPONSE: |
693 | qedi_process_tmf_resp(qedi, cqe, task, qedi_conn: conn); |
694 | break; |
695 | case ISCSI_OPCODE_TEXT_RESPONSE: |
696 | qedi_process_text_resp(qedi, cqe, task, qedi_conn: conn); |
697 | break; |
698 | case ISCSI_OPCODE_LOGOUT_RESPONSE: |
699 | qedi_process_logout_resp(qedi, cqe, task, qedi_conn: conn); |
700 | break; |
701 | case ISCSI_OPCODE_NOP_IN: |
702 | qedi_process_nopin_mesg(qedi, cqe, task, qedi_conn: conn, que_idx); |
703 | break; |
704 | default: |
705 | QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n" ); |
706 | } |
707 | } |
708 | |
709 | static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, |
710 | struct iscsi_cqe_solicited *cqe, |
711 | struct iscsi_task *task, |
712 | struct qedi_conn *qedi_conn) |
713 | { |
714 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
715 | struct iscsi_session *session = conn->session; |
716 | struct qedi_cmd *cmd = task->dd_data; |
717 | |
718 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, |
719 | "itid=0x%x, cmd task id=0x%x\n" , |
720 | cqe->itid, cmd->task_id); |
721 | |
722 | cmd->state = RESPONSE_RECEIVED; |
723 | |
724 | spin_lock_bh(lock: &session->back_lock); |
725 | __iscsi_put_task(task); |
726 | spin_unlock_bh(lock: &session->back_lock); |
727 | } |
728 | |
729 | static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, |
730 | struct iscsi_cqe_solicited *cqe, |
731 | struct iscsi_conn *conn) |
732 | { |
733 | struct qedi_work_map *work, *work_tmp; |
734 | u32 proto_itt = cqe->itid; |
735 | int found = 0; |
736 | struct qedi_cmd *qedi_cmd = NULL; |
737 | u32 iscsi_cid; |
738 | struct qedi_conn *qedi_conn; |
739 | struct qedi_cmd *dbg_cmd; |
740 | struct iscsi_task *mtask, *task; |
741 | struct iscsi_tm *tmf_hdr = NULL; |
742 | |
743 | iscsi_cid = cqe->conn_id; |
744 | qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
745 | if (!qedi_conn) { |
746 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
747 | "icid not found 0x%x\n" , cqe->conn_id); |
748 | return; |
749 | } |
750 | |
751 | /* Based on this itt get the corresponding qedi_cmd */ |
752 | spin_lock_bh(lock: &qedi_conn->tmf_work_lock); |
753 | list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, |
754 | list) { |
755 | if (work->rtid == proto_itt) { |
756 | /* We found the command */ |
757 | qedi_cmd = work->qedi_cmd; |
758 | if (!qedi_cmd->list_tmf_work) { |
759 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
760 | "TMF work not found, cqe->tid=0x%x, cid=0x%x\n" , |
761 | proto_itt, qedi_conn->iscsi_conn_id); |
762 | WARN_ON(1); |
763 | } |
764 | found = 1; |
765 | mtask = qedi_cmd->task; |
766 | task = work->ctask; |
767 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
768 | |
769 | list_del_init(entry: &work->list); |
770 | kfree(objp: work); |
771 | qedi_cmd->list_tmf_work = NULL; |
772 | } |
773 | } |
774 | spin_unlock_bh(lock: &qedi_conn->tmf_work_lock); |
775 | |
776 | if (!found) |
777 | goto check_cleanup_reqs; |
778 | |
779 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
780 | "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n" , |
781 | proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); |
782 | |
783 | spin_lock_bh(lock: &conn->session->back_lock); |
784 | if (iscsi_task_is_completed(task)) { |
785 | QEDI_NOTICE(&qedi->dbg_ctx, |
786 | "IO task completed, tmf rtt=0x%x, cid=0x%x\n" , |
787 | get_itt(tmf_hdr->rtt), qedi_conn->iscsi_conn_id); |
788 | goto unlock; |
789 | } |
790 | |
791 | dbg_cmd = task->dd_data; |
792 | |
793 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
794 | "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n" , |
795 | get_itt(tmf_hdr->rtt), get_itt(task->itt), dbg_cmd->task_id, |
796 | qedi_conn->iscsi_conn_id); |
797 | |
798 | spin_lock(lock: &qedi_conn->list_lock); |
799 | if (likely(dbg_cmd->io_cmd_in_list)) { |
800 | dbg_cmd->io_cmd_in_list = false; |
801 | list_del_init(entry: &dbg_cmd->io_cmd); |
802 | qedi_conn->active_cmd_count--; |
803 | } |
804 | spin_unlock(lock: &qedi_conn->list_lock); |
805 | qedi_cmd->state = CLEANUP_RECV; |
806 | unlock: |
807 | spin_unlock_bh(lock: &conn->session->back_lock); |
808 | wake_up_interruptible(&qedi_conn->wait_queue); |
809 | return; |
810 | |
811 | check_cleanup_reqs: |
812 | if (atomic_inc_return(v: &qedi_conn->cmd_cleanup_cmpl) == |
813 | qedi_conn->cmd_cleanup_req) { |
814 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
815 | "Freeing tid=0x%x for cid=0x%x\n" , |
816 | cqe->itid, qedi_conn->iscsi_conn_id); |
817 | wake_up(&qedi_conn->wait_queue); |
818 | } |
819 | } |
820 | |
821 | void qedi_fp_process_cqes(struct qedi_work *work) |
822 | { |
823 | struct qedi_ctx *qedi = work->qedi; |
824 | union iscsi_cqe *cqe = &work->cqe; |
825 | struct iscsi_task *task = NULL; |
826 | struct iscsi_nopout *nopout_hdr; |
827 | struct qedi_conn *q_conn; |
828 | struct iscsi_conn *conn; |
829 | struct qedi_cmd *qedi_cmd; |
830 | u32 comp_type; |
831 | u32 iscsi_cid; |
832 | u32 hdr_opcode; |
833 | u16 que_idx = work->que_idx; |
834 | u8 cqe_err_bits = 0; |
835 | |
836 | comp_type = cqe->cqe_common.cqe_type; |
837 | hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; |
838 | cqe_err_bits = |
839 | cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; |
840 | |
841 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
842 | "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n" , |
843 | cqe->cqe_common.conn_id, comp_type, hdr_opcode); |
844 | |
845 | if (comp_type >= MAX_ISCSI_CQES_TYPE) { |
846 | QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n" ); |
847 | return; |
848 | } |
849 | |
850 | iscsi_cid = cqe->cqe_common.conn_id; |
851 | q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
852 | if (!q_conn) { |
853 | QEDI_WARN(&qedi->dbg_ctx, |
854 | "Session no longer exists for cid=0x%x!!\n" , |
855 | iscsi_cid); |
856 | return; |
857 | } |
858 | |
859 | conn = q_conn->cls_conn->dd_data; |
860 | |
861 | if (unlikely(cqe_err_bits && |
862 | GET_FIELD(cqe_err_bits, |
863 | CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { |
864 | iscsi_conn_failure(conn, err: ISCSI_ERR_DATA_DGST); |
865 | return; |
866 | } |
867 | |
868 | switch (comp_type) { |
869 | case ISCSI_CQE_TYPE_SOLICITED: |
870 | case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: |
871 | qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); |
872 | task = qedi_cmd->task; |
873 | if (!task) { |
874 | QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n" ); |
875 | return; |
876 | } |
877 | |
878 | /* Process NOPIN local completion */ |
879 | nopout_hdr = (struct iscsi_nopout *)task->hdr; |
880 | if ((nopout_hdr->itt == RESERVED_ITT) && |
881 | (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { |
882 | qedi_process_nopin_local_cmpl(qedi, cqe: &cqe->cqe_solicited, |
883 | task, qedi_conn: q_conn); |
884 | } else { |
885 | cqe->cqe_solicited.itid = |
886 | qedi_get_itt(cqe->cqe_solicited); |
887 | /* Process other solicited responses */ |
888 | qedi_mtask_completion(qedi, cqe, task, conn: q_conn, que_idx); |
889 | } |
890 | break; |
891 | case ISCSI_CQE_TYPE_UNSOLICITED: |
892 | switch (hdr_opcode) { |
893 | case ISCSI_OPCODE_NOP_IN: |
894 | qedi_process_nopin_mesg(qedi, cqe, task, qedi_conn: q_conn, |
895 | que_idx); |
896 | break; |
897 | case ISCSI_OPCODE_ASYNC_MSG: |
898 | qedi_process_async_mesg(qedi, cqe, task, qedi_conn: q_conn, |
899 | que_idx); |
900 | break; |
901 | case ISCSI_OPCODE_REJECT: |
902 | qedi_process_reject_mesg(qedi, cqe, task, qedi_conn: q_conn, |
903 | que_idx); |
904 | break; |
905 | } |
906 | goto exit_fp_process; |
907 | case ISCSI_CQE_TYPE_DUMMY: |
908 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n" ); |
909 | goto exit_fp_process; |
910 | case ISCSI_CQE_TYPE_TASK_CLEANUP: |
911 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n" ); |
912 | qedi_process_cmd_cleanup_resp(qedi, cqe: &cqe->cqe_solicited, conn); |
913 | goto exit_fp_process; |
914 | default: |
915 | QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n" ); |
916 | break; |
917 | } |
918 | |
919 | exit_fp_process: |
920 | return; |
921 | } |
922 | |
923 | static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) |
924 | { |
925 | qedi_conn->ep->db_data.sq_prod = qedi_conn->ep->fw_sq_prod_idx; |
926 | |
927 | /* wmb - Make sure fw idx is coherent */ |
928 | wmb(); |
929 | writel(val: *(u32 *)&qedi_conn->ep->db_data, addr: qedi_conn->ep->p_doorbell); |
930 | |
931 | /* Make sure fw write idx is coherent, and include both memory barriers |
932 | * as a failsafe as for some architectures the call is the same but on |
933 | * others they are two different assembly operations. |
934 | */ |
935 | wmb(); |
936 | QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, |
937 | "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n" , |
938 | qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, |
939 | qedi_conn->iscsi_conn_id); |
940 | } |
941 | |
942 | static u16 qedi_get_wqe_idx(struct qedi_conn *qedi_conn) |
943 | { |
944 | struct qedi_endpoint *ep; |
945 | u16 rval; |
946 | |
947 | ep = qedi_conn->ep; |
948 | rval = ep->sq_prod_idx; |
949 | |
950 | /* Increament SQ index */ |
951 | ep->sq_prod_idx++; |
952 | ep->fw_sq_prod_idx++; |
953 | if (ep->sq_prod_idx == QEDI_SQ_SIZE) |
954 | ep->sq_prod_idx = 0; |
955 | |
956 | return rval; |
957 | } |
958 | |
959 | int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, |
960 | struct iscsi_task *task) |
961 | { |
962 | struct iscsi_login_req_hdr ; |
963 | struct scsi_sgl_task_params tx_sgl_task_params; |
964 | struct scsi_sgl_task_params rx_sgl_task_params; |
965 | struct iscsi_task_params task_params; |
966 | struct iscsi_task_context *fw_task_ctx; |
967 | struct qedi_ctx *qedi = qedi_conn->qedi; |
968 | struct iscsi_login_req *login_hdr; |
969 | struct scsi_sge *resp_sge = NULL; |
970 | struct qedi_cmd *qedi_cmd; |
971 | struct qedi_endpoint *ep; |
972 | s16 tid = 0; |
973 | u16 sq_idx = 0; |
974 | int rval = 0; |
975 | |
976 | resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
977 | qedi_cmd = (struct qedi_cmd *)task->dd_data; |
978 | ep = qedi_conn->ep; |
979 | login_hdr = (struct iscsi_login_req *)task->hdr; |
980 | |
981 | tid = qedi_get_task_idx(qedi); |
982 | if (tid == -1) |
983 | return -ENOMEM; |
984 | |
985 | fw_task_ctx = |
986 | (struct iscsi_task_context *)qedi_get_task_mem(info: &qedi->tasks, |
987 | tid); |
988 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); |
989 | |
990 | qedi_cmd->task_id = tid; |
991 | |
992 | memset(&task_params, 0, sizeof(task_params)); |
993 | memset(&login_req_pdu_header, 0, sizeof(login_req_pdu_header)); |
994 | memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
995 | memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
996 | /* Update header info */ |
997 | login_req_pdu_header.opcode = login_hdr->opcode; |
998 | login_req_pdu_header.version_min = login_hdr->min_version; |
999 | login_req_pdu_header.version_max = login_hdr->max_version; |
1000 | login_req_pdu_header.flags_attr = login_hdr->flags; |
1001 | login_req_pdu_header.isid_tabc = swab32p(p: (u32 *)login_hdr->isid); |
1002 | login_req_pdu_header.isid_d = swab16p(p: (u16 *)&login_hdr->isid[4]); |
1003 | |
1004 | login_req_pdu_header.tsih = login_hdr->tsih; |
1005 | login_req_pdu_header.hdr_second_dword = ntoh24(login_hdr->dlength); |
1006 | |
1007 | qedi_update_itt_map(qedi, tid, proto_itt: task->itt, qedi_cmd); |
1008 | login_req_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
1009 | login_req_pdu_header.cid = qedi_conn->iscsi_conn_id; |
1010 | login_req_pdu_header.cmd_sn = be32_to_cpu(login_hdr->cmdsn); |
1011 | login_req_pdu_header.exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); |
1012 | login_req_pdu_header.exp_stat_sn = 0; |
1013 | |
1014 | /* Fill tx AHS and rx buffer */ |
1015 | tx_sgl_task_params.sgl = |
1016 | (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
1017 | tx_sgl_task_params.sgl_phys_addr.lo = |
1018 | (u32)(qedi_conn->gen_pdu.req_dma_addr); |
1019 | tx_sgl_task_params.sgl_phys_addr.hi = |
1020 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
1021 | tx_sgl_task_params.total_buffer_size = ntoh24(login_hdr->dlength); |
1022 | tx_sgl_task_params.num_sges = 1; |
1023 | |
1024 | rx_sgl_task_params.sgl = |
1025 | (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
1026 | rx_sgl_task_params.sgl_phys_addr.lo = |
1027 | (u32)(qedi_conn->gen_pdu.resp_dma_addr); |
1028 | rx_sgl_task_params.sgl_phys_addr.hi = |
1029 | (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
1030 | rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; |
1031 | rx_sgl_task_params.num_sges = 1; |
1032 | |
1033 | /* Fill fw input params */ |
1034 | task_params.context = fw_task_ctx; |
1035 | task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
1036 | task_params.itid = tid; |
1037 | task_params.cq_rss_number = 0; |
1038 | task_params.tx_io_size = ntoh24(login_hdr->dlength); |
1039 | task_params.rx_io_size = resp_sge->sge_len; |
1040 | |
1041 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
1042 | task_params.sqe = &ep->sq[sq_idx]; |
1043 | |
1044 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
1045 | rval = init_initiator_login_request_task(task_params: &task_params, |
1046 | login_header: &login_req_pdu_header, |
1047 | tx_params: &tx_sgl_task_params, |
1048 | rx_params: &rx_sgl_task_params); |
1049 | if (rval) |
1050 | return -1; |
1051 | |
1052 | spin_lock(lock: &qedi_conn->list_lock); |
1053 | list_add_tail(new: &qedi_cmd->io_cmd, head: &qedi_conn->active_cmd_list); |
1054 | qedi_cmd->io_cmd_in_list = true; |
1055 | qedi_conn->active_cmd_count++; |
1056 | spin_unlock(lock: &qedi_conn->list_lock); |
1057 | |
1058 | qedi_ring_doorbell(qedi_conn); |
1059 | return 0; |
1060 | } |
1061 | |
1062 | int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, |
1063 | struct iscsi_task *task) |
1064 | { |
1065 | struct iscsi_logout_req_hdr ; |
1066 | struct scsi_sgl_task_params tx_sgl_task_params; |
1067 | struct scsi_sgl_task_params rx_sgl_task_params; |
1068 | struct iscsi_task_params task_params; |
1069 | struct iscsi_task_context *fw_task_ctx; |
1070 | struct iscsi_logout *logout_hdr = NULL; |
1071 | struct qedi_ctx *qedi = qedi_conn->qedi; |
1072 | struct qedi_cmd *qedi_cmd; |
1073 | struct qedi_endpoint *ep; |
1074 | s16 tid = 0; |
1075 | u16 sq_idx = 0; |
1076 | int rval = 0; |
1077 | |
1078 | qedi_cmd = (struct qedi_cmd *)task->dd_data; |
1079 | logout_hdr = (struct iscsi_logout *)task->hdr; |
1080 | ep = qedi_conn->ep; |
1081 | |
1082 | tid = qedi_get_task_idx(qedi); |
1083 | if (tid == -1) |
1084 | return -ENOMEM; |
1085 | |
1086 | fw_task_ctx = |
1087 | (struct iscsi_task_context *)qedi_get_task_mem(info: &qedi->tasks, |
1088 | tid); |
1089 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); |
1090 | |
1091 | qedi_cmd->task_id = tid; |
1092 | |
1093 | memset(&task_params, 0, sizeof(task_params)); |
1094 | memset(&logout_pdu_header, 0, sizeof(logout_pdu_header)); |
1095 | memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
1096 | memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
1097 | |
1098 | /* Update header info */ |
1099 | logout_pdu_header.opcode = logout_hdr->opcode; |
1100 | logout_pdu_header.reason_code = 0x80 | logout_hdr->flags; |
1101 | qedi_update_itt_map(qedi, tid, proto_itt: task->itt, qedi_cmd); |
1102 | logout_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
1103 | logout_pdu_header.exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); |
1104 | logout_pdu_header.cmd_sn = be32_to_cpu(logout_hdr->cmdsn); |
1105 | logout_pdu_header.cid = qedi_conn->iscsi_conn_id; |
1106 | |
1107 | /* Fill fw input params */ |
1108 | task_params.context = fw_task_ctx; |
1109 | task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
1110 | task_params.itid = tid; |
1111 | task_params.cq_rss_number = 0; |
1112 | task_params.tx_io_size = 0; |
1113 | task_params.rx_io_size = 0; |
1114 | |
1115 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
1116 | task_params.sqe = &ep->sq[sq_idx]; |
1117 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
1118 | |
1119 | rval = init_initiator_logout_request_task(task_params: &task_params, |
1120 | logout_hdr: &logout_pdu_header, |
1121 | NULL, NULL); |
1122 | if (rval) |
1123 | return -1; |
1124 | |
1125 | spin_lock(lock: &qedi_conn->list_lock); |
1126 | list_add_tail(new: &qedi_cmd->io_cmd, head: &qedi_conn->active_cmd_list); |
1127 | qedi_cmd->io_cmd_in_list = true; |
1128 | qedi_conn->active_cmd_count++; |
1129 | spin_unlock(lock: &qedi_conn->list_lock); |
1130 | |
1131 | qedi_ring_doorbell(qedi_conn); |
1132 | return 0; |
1133 | } |
1134 | |
1135 | int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, |
1136 | struct iscsi_task *task, bool in_recovery) |
1137 | { |
1138 | int rval; |
1139 | struct iscsi_task *ctask; |
1140 | struct qedi_cmd *cmd, *cmd_tmp; |
1141 | struct iscsi_tm *tmf_hdr; |
1142 | unsigned int lun = 0; |
1143 | bool lun_reset = false; |
1144 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
1145 | struct iscsi_session *session = conn->session; |
1146 | |
1147 | /* From recovery, task is NULL or from tmf resp valid task */ |
1148 | if (task) { |
1149 | tmf_hdr = (struct iscsi_tm *)task->hdr; |
1150 | |
1151 | if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
1152 | ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { |
1153 | lun_reset = true; |
1154 | lun = scsilun_to_int(&tmf_hdr->lun); |
1155 | } |
1156 | } |
1157 | |
1158 | qedi_conn->cmd_cleanup_req = 0; |
1159 | atomic_set(v: &qedi_conn->cmd_cleanup_cmpl, i: 0); |
1160 | |
1161 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1162 | "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n" , |
1163 | qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, |
1164 | in_recovery, lun_reset); |
1165 | |
1166 | if (lun_reset) |
1167 | spin_lock_bh(lock: &session->back_lock); |
1168 | |
1169 | spin_lock(lock: &qedi_conn->list_lock); |
1170 | |
1171 | list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, |
1172 | io_cmd) { |
1173 | ctask = cmd->task; |
1174 | if (ctask == task) |
1175 | continue; |
1176 | |
1177 | if (lun_reset) { |
1178 | if (cmd->scsi_cmd && cmd->scsi_cmd->device) { |
1179 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1180 | "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n" , |
1181 | cmd->task_id, get_itt(ctask->itt), |
1182 | cmd->scsi_cmd, cmd->scsi_cmd->device, |
1183 | ctask->state, cmd->state, |
1184 | qedi_conn->iscsi_conn_id); |
1185 | if (cmd->scsi_cmd->device->lun != lun) |
1186 | continue; |
1187 | } |
1188 | } |
1189 | qedi_conn->cmd_cleanup_req++; |
1190 | qedi_iscsi_cleanup_task(task: ctask, mark_cmd_node_deleted: true); |
1191 | |
1192 | cmd->io_cmd_in_list = false; |
1193 | list_del_init(entry: &cmd->io_cmd); |
1194 | qedi_conn->active_cmd_count--; |
1195 | QEDI_WARN(&qedi->dbg_ctx, |
1196 | "Deleted active cmd list node io_cmd=%p, cid=0x%x\n" , |
1197 | &cmd->io_cmd, qedi_conn->iscsi_conn_id); |
1198 | } |
1199 | |
1200 | spin_unlock(lock: &qedi_conn->list_lock); |
1201 | |
1202 | if (lun_reset) |
1203 | spin_unlock_bh(lock: &session->back_lock); |
1204 | |
1205 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1206 | "cmd_cleanup_req=%d, cid=0x%x\n" , |
1207 | qedi_conn->cmd_cleanup_req, |
1208 | qedi_conn->iscsi_conn_id); |
1209 | |
1210 | rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, |
1211 | (qedi_conn->cmd_cleanup_req == |
1212 | atomic_read(&qedi_conn->cmd_cleanup_cmpl)) || |
1213 | test_bit(QEDI_IN_RECOVERY, &qedi->flags), |
1214 | 5 * HZ); |
1215 | if (rval) { |
1216 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1217 | "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n" , |
1218 | qedi_conn->cmd_cleanup_req, |
1219 | atomic_read(&qedi_conn->cmd_cleanup_cmpl), |
1220 | qedi_conn->iscsi_conn_id); |
1221 | |
1222 | return 0; |
1223 | } |
1224 | |
1225 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1226 | "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n" , |
1227 | qedi_conn->cmd_cleanup_req, |
1228 | atomic_read(&qedi_conn->cmd_cleanup_cmpl), |
1229 | qedi_conn->iscsi_conn_id); |
1230 | |
1231 | iscsi_host_for_each_session(shost: qedi->shost, |
1232 | fn: qedi_mark_device_missing); |
1233 | qedi_ops->common->drain(qedi->cdev); |
1234 | |
1235 | /* Enable IOs for all other sessions except current.*/ |
1236 | if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, |
1237 | (qedi_conn->cmd_cleanup_req == |
1238 | atomic_read(&qedi_conn->cmd_cleanup_cmpl)) || |
1239 | test_bit(QEDI_IN_RECOVERY, &qedi->flags), |
1240 | 5 * HZ)) { |
1241 | iscsi_host_for_each_session(shost: qedi->shost, |
1242 | fn: qedi_mark_device_available); |
1243 | return -1; |
1244 | } |
1245 | |
1246 | iscsi_host_for_each_session(shost: qedi->shost, |
1247 | fn: qedi_mark_device_available); |
1248 | |
1249 | return 0; |
1250 | } |
1251 | |
1252 | void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, |
1253 | struct iscsi_task *task) |
1254 | { |
1255 | struct qedi_endpoint *qedi_ep; |
1256 | int rval; |
1257 | |
1258 | qedi_ep = qedi_conn->ep; |
1259 | qedi_conn->cmd_cleanup_req = 0; |
1260 | atomic_set(v: &qedi_conn->cmd_cleanup_cmpl, i: 0); |
1261 | |
1262 | if (!qedi_ep) { |
1263 | QEDI_WARN(&qedi->dbg_ctx, |
1264 | "Cannot proceed, ep already disconnected, cid=0x%x\n" , |
1265 | qedi_conn->iscsi_conn_id); |
1266 | return; |
1267 | } |
1268 | |
1269 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1270 | "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n" , |
1271 | qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); |
1272 | |
1273 | qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); |
1274 | |
1275 | rval = qedi_cleanup_all_io(qedi, qedi_conn, task, in_recovery: true); |
1276 | if (rval) { |
1277 | QEDI_ERR(&qedi->dbg_ctx, |
1278 | "fatal error, need hard reset, cid=0x%x\n" , |
1279 | qedi_conn->iscsi_conn_id); |
1280 | WARN_ON(1); |
1281 | } |
1282 | } |
1283 | |
1284 | static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, |
1285 | struct qedi_conn *qedi_conn, |
1286 | struct iscsi_task *task, |
1287 | struct qedi_cmd *qedi_cmd, |
1288 | struct qedi_work_map *list_work) |
1289 | { |
1290 | struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; |
1291 | int wait; |
1292 | |
1293 | wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, |
1294 | ((qedi_cmd->state == |
1295 | CLEANUP_RECV) || |
1296 | ((qedi_cmd->type == TYPEIO) && |
1297 | (cmd->state == |
1298 | RESPONSE_RECEIVED))), |
1299 | 5 * HZ); |
1300 | if (!wait) { |
1301 | qedi_cmd->state = CLEANUP_WAIT_FAILED; |
1302 | |
1303 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1304 | "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n" , |
1305 | cmd->task_id, qedi_conn->iscsi_conn_id); |
1306 | |
1307 | return -1; |
1308 | } |
1309 | return 0; |
1310 | } |
1311 | |
1312 | static void qedi_abort_work(struct work_struct *work) |
1313 | { |
1314 | struct qedi_cmd *qedi_cmd = |
1315 | container_of(work, struct qedi_cmd, tmf_work); |
1316 | struct qedi_conn *qedi_conn = qedi_cmd->conn; |
1317 | struct qedi_ctx *qedi = qedi_conn->qedi; |
1318 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; |
1319 | struct qedi_work_map *list_work = NULL; |
1320 | struct iscsi_task *mtask; |
1321 | struct qedi_cmd *cmd; |
1322 | struct iscsi_task *ctask; |
1323 | struct iscsi_tm *tmf_hdr; |
1324 | s16 rval = 0; |
1325 | |
1326 | mtask = qedi_cmd->task; |
1327 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
1328 | |
1329 | spin_lock_bh(lock: &conn->session->back_lock); |
1330 | ctask = iscsi_itt_to_ctask(conn, tmf_hdr->rtt); |
1331 | if (!ctask) { |
1332 | spin_unlock_bh(lock: &conn->session->back_lock); |
1333 | QEDI_ERR(&qedi->dbg_ctx, "Invalid RTT. Letting abort timeout.\n" ); |
1334 | goto clear_cleanup; |
1335 | } |
1336 | |
1337 | if (iscsi_task_is_completed(task: ctask)) { |
1338 | spin_unlock_bh(lock: &conn->session->back_lock); |
1339 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1340 | "Task already completed\n" ); |
1341 | /* |
1342 | * We have to still send the TMF because libiscsi needs the |
1343 | * response to avoid a timeout. |
1344 | */ |
1345 | goto send_tmf; |
1346 | } |
1347 | spin_unlock_bh(lock: &conn->session->back_lock); |
1348 | |
1349 | cmd = (struct qedi_cmd *)ctask->dd_data; |
1350 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1351 | "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n" , |
1352 | get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, |
1353 | qedi_conn->iscsi_conn_id); |
1354 | |
1355 | if (qedi_do_not_recover) { |
1356 | QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n" , |
1357 | qedi_do_not_recover); |
1358 | goto clear_cleanup; |
1359 | } |
1360 | |
1361 | list_work = kzalloc(size: sizeof(*list_work), GFP_NOIO); |
1362 | if (!list_work) { |
1363 | QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n" ); |
1364 | goto clear_cleanup; |
1365 | } |
1366 | |
1367 | qedi_cmd->type = TYPEIO; |
1368 | qedi_cmd->state = CLEANUP_WAIT; |
1369 | list_work->qedi_cmd = qedi_cmd; |
1370 | list_work->rtid = cmd->task_id; |
1371 | list_work->state = QEDI_WORK_SCHEDULED; |
1372 | list_work->ctask = ctask; |
1373 | qedi_cmd->list_tmf_work = list_work; |
1374 | |
1375 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
1376 | "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n" , |
1377 | list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, |
1378 | tmf_hdr->flags); |
1379 | |
1380 | spin_lock_bh(lock: &qedi_conn->tmf_work_lock); |
1381 | list_add_tail(new: &list_work->list, head: &qedi_conn->tmf_work_list); |
1382 | spin_unlock_bh(lock: &qedi_conn->tmf_work_lock); |
1383 | |
1384 | qedi_iscsi_cleanup_task(task: ctask, mark_cmd_node_deleted: false); |
1385 | |
1386 | rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, task: ctask, qedi_cmd, |
1387 | list_work); |
1388 | if (rval == -1) { |
1389 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1390 | "FW cleanup got escalated, cid=0x%x\n" , |
1391 | qedi_conn->iscsi_conn_id); |
1392 | goto ldel_exit; |
1393 | } |
1394 | |
1395 | send_tmf: |
1396 | send_iscsi_tmf(qedi_conn, mtask: qedi_cmd->task, ctask); |
1397 | goto clear_cleanup; |
1398 | |
1399 | ldel_exit: |
1400 | spin_lock_bh(lock: &qedi_conn->tmf_work_lock); |
1401 | if (qedi_cmd->list_tmf_work) { |
1402 | list_del_init(entry: &list_work->list); |
1403 | qedi_cmd->list_tmf_work = NULL; |
1404 | kfree(objp: list_work); |
1405 | } |
1406 | spin_unlock_bh(lock: &qedi_conn->tmf_work_lock); |
1407 | |
1408 | spin_lock(lock: &qedi_conn->list_lock); |
1409 | if (likely(cmd->io_cmd_in_list)) { |
1410 | cmd->io_cmd_in_list = false; |
1411 | list_del_init(entry: &cmd->io_cmd); |
1412 | qedi_conn->active_cmd_count--; |
1413 | } |
1414 | spin_unlock(lock: &qedi_conn->list_lock); |
1415 | |
1416 | clear_cleanup: |
1417 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
1418 | qedi_conn->fw_cleanup_works--; |
1419 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
1420 | } |
1421 | |
1422 | static int send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask, |
1423 | struct iscsi_task *ctask) |
1424 | { |
1425 | struct iscsi_tmf_request_hdr ; |
1426 | struct iscsi_task_params task_params; |
1427 | struct qedi_ctx *qedi = qedi_conn->qedi; |
1428 | struct iscsi_task_context *fw_task_ctx; |
1429 | struct iscsi_tm *tmf_hdr; |
1430 | struct qedi_cmd *qedi_cmd; |
1431 | struct qedi_cmd *cmd; |
1432 | struct qedi_endpoint *ep; |
1433 | u32 scsi_lun[2]; |
1434 | s16 tid = 0; |
1435 | u16 sq_idx = 0; |
1436 | |
1437 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
1438 | qedi_cmd = (struct qedi_cmd *)mtask->dd_data; |
1439 | ep = qedi_conn->ep; |
1440 | if (!ep) |
1441 | return -ENODEV; |
1442 | |
1443 | tid = qedi_get_task_idx(qedi); |
1444 | if (tid == -1) |
1445 | return -ENOMEM; |
1446 | |
1447 | fw_task_ctx = |
1448 | (struct iscsi_task_context *)qedi_get_task_mem(info: &qedi->tasks, |
1449 | tid); |
1450 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); |
1451 | |
1452 | qedi_cmd->task_id = tid; |
1453 | |
1454 | memset(&task_params, 0, sizeof(task_params)); |
1455 | memset(&tmf_pdu_header, 0, sizeof(tmf_pdu_header)); |
1456 | |
1457 | /* Update header info */ |
1458 | qedi_update_itt_map(qedi, tid, proto_itt: mtask->itt, qedi_cmd); |
1459 | tmf_pdu_header.itt = qedi_set_itt(tid, get_itt(mtask->itt)); |
1460 | tmf_pdu_header.cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); |
1461 | |
1462 | memcpy(scsi_lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); |
1463 | tmf_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); |
1464 | tmf_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); |
1465 | |
1466 | if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == |
1467 | ISCSI_TM_FUNC_ABORT_TASK) { |
1468 | cmd = (struct qedi_cmd *)ctask->dd_data; |
1469 | tmf_pdu_header.rtt = |
1470 | qedi_set_itt(cmd->task_id, |
1471 | get_itt(tmf_hdr->rtt)); |
1472 | } else { |
1473 | tmf_pdu_header.rtt = ISCSI_RESERVED_TAG; |
1474 | } |
1475 | |
1476 | tmf_pdu_header.opcode = tmf_hdr->opcode; |
1477 | tmf_pdu_header.function = tmf_hdr->flags; |
1478 | tmf_pdu_header.hdr_second_dword = ntoh24(tmf_hdr->dlength); |
1479 | tmf_pdu_header.ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); |
1480 | |
1481 | /* Fill fw input params */ |
1482 | task_params.context = fw_task_ctx; |
1483 | task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
1484 | task_params.itid = tid; |
1485 | task_params.cq_rss_number = 0; |
1486 | task_params.tx_io_size = 0; |
1487 | task_params.rx_io_size = 0; |
1488 | |
1489 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
1490 | task_params.sqe = &ep->sq[sq_idx]; |
1491 | |
1492 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
1493 | init_initiator_tmf_request_task(task_params: &task_params, tmf_header: &tmf_pdu_header); |
1494 | |
1495 | spin_lock(lock: &qedi_conn->list_lock); |
1496 | list_add_tail(new: &qedi_cmd->io_cmd, head: &qedi_conn->active_cmd_list); |
1497 | qedi_cmd->io_cmd_in_list = true; |
1498 | qedi_conn->active_cmd_count++; |
1499 | spin_unlock(lock: &qedi_conn->list_lock); |
1500 | |
1501 | qedi_ring_doorbell(qedi_conn); |
1502 | return 0; |
1503 | } |
1504 | |
1505 | int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask) |
1506 | { |
1507 | struct iscsi_tm *tmf_hdr = (struct iscsi_tm *)mtask->hdr; |
1508 | struct qedi_cmd *qedi_cmd = mtask->dd_data; |
1509 | struct qedi_ctx *qedi = qedi_conn->qedi; |
1510 | int rc = 0; |
1511 | |
1512 | switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { |
1513 | case ISCSI_TM_FUNC_ABORT_TASK: |
1514 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
1515 | qedi_conn->fw_cleanup_works++; |
1516 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
1517 | |
1518 | INIT_WORK(&qedi_cmd->tmf_work, qedi_abort_work); |
1519 | queue_work(wq: qedi->tmf_thread, work: &qedi_cmd->tmf_work); |
1520 | break; |
1521 | case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET: |
1522 | case ISCSI_TM_FUNC_TARGET_WARM_RESET: |
1523 | case ISCSI_TM_FUNC_TARGET_COLD_RESET: |
1524 | rc = send_iscsi_tmf(qedi_conn, mtask, NULL); |
1525 | break; |
1526 | default: |
1527 | QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n" , |
1528 | qedi_conn->iscsi_conn_id); |
1529 | return -EINVAL; |
1530 | } |
1531 | |
1532 | return rc; |
1533 | } |
1534 | |
1535 | int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, |
1536 | struct iscsi_task *task) |
1537 | { |
1538 | struct iscsi_text_request_hdr ; |
1539 | struct scsi_sgl_task_params tx_sgl_task_params; |
1540 | struct scsi_sgl_task_params rx_sgl_task_params; |
1541 | struct iscsi_task_params task_params; |
1542 | struct iscsi_task_context *fw_task_ctx; |
1543 | struct qedi_ctx *qedi = qedi_conn->qedi; |
1544 | struct iscsi_text *text_hdr; |
1545 | struct scsi_sge *req_sge = NULL; |
1546 | struct scsi_sge *resp_sge = NULL; |
1547 | struct qedi_cmd *qedi_cmd; |
1548 | struct qedi_endpoint *ep; |
1549 | s16 tid = 0; |
1550 | u16 sq_idx = 0; |
1551 | int rval = 0; |
1552 | |
1553 | req_sge = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
1554 | resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
1555 | qedi_cmd = (struct qedi_cmd *)task->dd_data; |
1556 | text_hdr = (struct iscsi_text *)task->hdr; |
1557 | ep = qedi_conn->ep; |
1558 | |
1559 | tid = qedi_get_task_idx(qedi); |
1560 | if (tid == -1) |
1561 | return -ENOMEM; |
1562 | |
1563 | fw_task_ctx = |
1564 | (struct iscsi_task_context *)qedi_get_task_mem(info: &qedi->tasks, |
1565 | tid); |
1566 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); |
1567 | |
1568 | qedi_cmd->task_id = tid; |
1569 | |
1570 | memset(&task_params, 0, sizeof(task_params)); |
1571 | memset(&text_request_pdu_header, 0, sizeof(text_request_pdu_header)); |
1572 | memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
1573 | memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
1574 | |
1575 | /* Update header info */ |
1576 | text_request_pdu_header.opcode = text_hdr->opcode; |
1577 | text_request_pdu_header.flags_attr = text_hdr->flags; |
1578 | |
1579 | qedi_update_itt_map(qedi, tid, proto_itt: task->itt, qedi_cmd); |
1580 | text_request_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
1581 | text_request_pdu_header.ttt = text_hdr->ttt; |
1582 | text_request_pdu_header.cmd_sn = be32_to_cpu(text_hdr->cmdsn); |
1583 | text_request_pdu_header.exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); |
1584 | text_request_pdu_header.hdr_second_dword = ntoh24(text_hdr->dlength); |
1585 | |
1586 | /* Fill tx AHS and rx buffer */ |
1587 | tx_sgl_task_params.sgl = |
1588 | (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
1589 | tx_sgl_task_params.sgl_phys_addr.lo = |
1590 | (u32)(qedi_conn->gen_pdu.req_dma_addr); |
1591 | tx_sgl_task_params.sgl_phys_addr.hi = |
1592 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
1593 | tx_sgl_task_params.total_buffer_size = req_sge->sge_len; |
1594 | tx_sgl_task_params.num_sges = 1; |
1595 | |
1596 | rx_sgl_task_params.sgl = |
1597 | (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
1598 | rx_sgl_task_params.sgl_phys_addr.lo = |
1599 | (u32)(qedi_conn->gen_pdu.resp_dma_addr); |
1600 | rx_sgl_task_params.sgl_phys_addr.hi = |
1601 | (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
1602 | rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; |
1603 | rx_sgl_task_params.num_sges = 1; |
1604 | |
1605 | /* Fill fw input params */ |
1606 | task_params.context = fw_task_ctx; |
1607 | task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
1608 | task_params.itid = tid; |
1609 | task_params.cq_rss_number = 0; |
1610 | task_params.tx_io_size = ntoh24(text_hdr->dlength); |
1611 | task_params.rx_io_size = resp_sge->sge_len; |
1612 | |
1613 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
1614 | task_params.sqe = &ep->sq[sq_idx]; |
1615 | |
1616 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
1617 | rval = init_initiator_text_request_task(task_params: &task_params, |
1618 | text_header: &text_request_pdu_header, |
1619 | tx_params: &tx_sgl_task_params, |
1620 | rx_params: &rx_sgl_task_params); |
1621 | if (rval) |
1622 | return -1; |
1623 | |
1624 | spin_lock(lock: &qedi_conn->list_lock); |
1625 | list_add_tail(new: &qedi_cmd->io_cmd, head: &qedi_conn->active_cmd_list); |
1626 | qedi_cmd->io_cmd_in_list = true; |
1627 | qedi_conn->active_cmd_count++; |
1628 | spin_unlock(lock: &qedi_conn->list_lock); |
1629 | |
1630 | qedi_ring_doorbell(qedi_conn); |
1631 | return 0; |
1632 | } |
1633 | |
1634 | int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, |
1635 | struct iscsi_task *task, |
1636 | char *datap, int data_len, int unsol) |
1637 | { |
1638 | struct iscsi_nop_out_hdr ; |
1639 | struct scsi_sgl_task_params tx_sgl_task_params; |
1640 | struct scsi_sgl_task_params rx_sgl_task_params; |
1641 | struct iscsi_task_params task_params; |
1642 | struct qedi_ctx *qedi = qedi_conn->qedi; |
1643 | struct iscsi_task_context *fw_task_ctx; |
1644 | struct iscsi_nopout *nopout_hdr; |
1645 | struct scsi_sge *resp_sge = NULL; |
1646 | struct qedi_cmd *qedi_cmd; |
1647 | struct qedi_endpoint *ep; |
1648 | u32 scsi_lun[2]; |
1649 | s16 tid = 0; |
1650 | u16 sq_idx = 0; |
1651 | int rval = 0; |
1652 | |
1653 | resp_sge = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
1654 | qedi_cmd = (struct qedi_cmd *)task->dd_data; |
1655 | nopout_hdr = (struct iscsi_nopout *)task->hdr; |
1656 | ep = qedi_conn->ep; |
1657 | |
1658 | tid = qedi_get_task_idx(qedi); |
1659 | if (tid == -1) |
1660 | return -ENOMEM; |
1661 | |
1662 | fw_task_ctx = |
1663 | (struct iscsi_task_context *)qedi_get_task_mem(info: &qedi->tasks, |
1664 | tid); |
1665 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); |
1666 | |
1667 | qedi_cmd->task_id = tid; |
1668 | |
1669 | memset(&task_params, 0, sizeof(task_params)); |
1670 | memset(&nop_out_pdu_header, 0, sizeof(nop_out_pdu_header)); |
1671 | memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
1672 | memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
1673 | |
1674 | /* Update header info */ |
1675 | nop_out_pdu_header.opcode = nopout_hdr->opcode; |
1676 | SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); |
1677 | SET_FIELD(nop_out_pdu_header.flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); |
1678 | |
1679 | memcpy(scsi_lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); |
1680 | nop_out_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); |
1681 | nop_out_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); |
1682 | nop_out_pdu_header.cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); |
1683 | nop_out_pdu_header.exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); |
1684 | |
1685 | qedi_update_itt_map(qedi, tid, proto_itt: task->itt, qedi_cmd); |
1686 | |
1687 | if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { |
1688 | nop_out_pdu_header.itt = be32_to_cpu(nopout_hdr->itt); |
1689 | nop_out_pdu_header.ttt = be32_to_cpu(nopout_hdr->ttt); |
1690 | } else { |
1691 | nop_out_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
1692 | nop_out_pdu_header.ttt = ISCSI_TTT_ALL_ONES; |
1693 | |
1694 | spin_lock(lock: &qedi_conn->list_lock); |
1695 | list_add_tail(new: &qedi_cmd->io_cmd, head: &qedi_conn->active_cmd_list); |
1696 | qedi_cmd->io_cmd_in_list = true; |
1697 | qedi_conn->active_cmd_count++; |
1698 | spin_unlock(lock: &qedi_conn->list_lock); |
1699 | } |
1700 | |
1701 | /* Fill tx AHS and rx buffer */ |
1702 | if (data_len) { |
1703 | tx_sgl_task_params.sgl = |
1704 | (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
1705 | tx_sgl_task_params.sgl_phys_addr.lo = |
1706 | (u32)(qedi_conn->gen_pdu.req_dma_addr); |
1707 | tx_sgl_task_params.sgl_phys_addr.hi = |
1708 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
1709 | tx_sgl_task_params.total_buffer_size = data_len; |
1710 | tx_sgl_task_params.num_sges = 1; |
1711 | |
1712 | rx_sgl_task_params.sgl = |
1713 | (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
1714 | rx_sgl_task_params.sgl_phys_addr.lo = |
1715 | (u32)(qedi_conn->gen_pdu.resp_dma_addr); |
1716 | rx_sgl_task_params.sgl_phys_addr.hi = |
1717 | (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
1718 | rx_sgl_task_params.total_buffer_size = resp_sge->sge_len; |
1719 | rx_sgl_task_params.num_sges = 1; |
1720 | } |
1721 | |
1722 | /* Fill fw input params */ |
1723 | task_params.context = fw_task_ctx; |
1724 | task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
1725 | task_params.itid = tid; |
1726 | task_params.cq_rss_number = 0; |
1727 | task_params.tx_io_size = data_len; |
1728 | task_params.rx_io_size = resp_sge->sge_len; |
1729 | |
1730 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
1731 | task_params.sqe = &ep->sq[sq_idx]; |
1732 | |
1733 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
1734 | rval = init_initiator_nop_out_task(task_params: &task_params, |
1735 | nop_out_pdu_header: &nop_out_pdu_header, |
1736 | tx_sgl_params: &tx_sgl_task_params, |
1737 | rx_sgl_params: &rx_sgl_task_params); |
1738 | if (rval) |
1739 | return -1; |
1740 | |
1741 | qedi_ring_doorbell(qedi_conn); |
1742 | return 0; |
1743 | } |
1744 | |
1745 | static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, |
1746 | int bd_index) |
1747 | { |
1748 | struct scsi_sge *bd = cmd->io_tbl.sge_tbl; |
1749 | int frag_size, sg_frags; |
1750 | |
1751 | sg_frags = 0; |
1752 | |
1753 | while (sg_len) { |
1754 | if (addr % QEDI_PAGE_SIZE) |
1755 | frag_size = |
1756 | (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); |
1757 | else |
1758 | frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : |
1759 | (sg_len % QEDI_BD_SPLIT_SZ); |
1760 | |
1761 | if (frag_size == 0) |
1762 | frag_size = QEDI_BD_SPLIT_SZ; |
1763 | |
1764 | bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); |
1765 | bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); |
1766 | bd[bd_index + sg_frags].sge_len = (u16)frag_size; |
1767 | QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, |
1768 | "split sge %d: addr=%llx, len=%x" , |
1769 | (bd_index + sg_frags), addr, frag_size); |
1770 | |
1771 | addr += (u64)frag_size; |
1772 | sg_frags++; |
1773 | sg_len -= frag_size; |
1774 | } |
1775 | return sg_frags; |
1776 | } |
1777 | |
1778 | static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) |
1779 | { |
1780 | struct scsi_cmnd *sc = cmd->scsi_cmd; |
1781 | struct scsi_sge *bd = cmd->io_tbl.sge_tbl; |
1782 | struct scatterlist *sg; |
1783 | int byte_count = 0; |
1784 | int bd_count = 0; |
1785 | int sg_count; |
1786 | int sg_len; |
1787 | int sg_frags; |
1788 | u64 addr, end_addr; |
1789 | int i; |
1790 | |
1791 | WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); |
1792 | |
1793 | sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), |
1794 | scsi_sg_count(sc), sc->sc_data_direction); |
1795 | |
1796 | /* |
1797 | * New condition to send single SGE as cached-SGL. |
1798 | * Single SGE with length less than 64K. |
1799 | */ |
1800 | sg = scsi_sglist(cmd: sc); |
1801 | if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { |
1802 | sg_len = sg_dma_len(sg); |
1803 | addr = (u64)sg_dma_address(sg); |
1804 | |
1805 | bd[bd_count].sge_addr.lo = (addr & 0xffffffff); |
1806 | bd[bd_count].sge_addr.hi = (addr >> 32); |
1807 | bd[bd_count].sge_len = (u16)sg_len; |
1808 | |
1809 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
1810 | "single-cached-sgl: bd_count:%d addr=%llx, len=%x" , |
1811 | sg_count, addr, sg_len); |
1812 | |
1813 | return ++bd_count; |
1814 | } |
1815 | |
1816 | scsi_for_each_sg(sc, sg, sg_count, i) { |
1817 | sg_len = sg_dma_len(sg); |
1818 | addr = (u64)sg_dma_address(sg); |
1819 | end_addr = (addr + sg_len); |
1820 | |
1821 | /* |
1822 | * first sg elem in the 'list', |
1823 | * check if end addr is page-aligned. |
1824 | */ |
1825 | if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) |
1826 | cmd->use_slowpath = true; |
1827 | |
1828 | /* |
1829 | * last sg elem in the 'list', |
1830 | * check if start addr is page-aligned. |
1831 | */ |
1832 | else if ((i == (sg_count - 1)) && |
1833 | (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) |
1834 | cmd->use_slowpath = true; |
1835 | |
1836 | /* |
1837 | * middle sg elements in list, |
1838 | * check if start and end addr is page-aligned |
1839 | */ |
1840 | else if ((i != 0) && (i != (sg_count - 1)) && |
1841 | ((addr % QEDI_PAGE_SIZE) || |
1842 | (end_addr % QEDI_PAGE_SIZE))) |
1843 | cmd->use_slowpath = true; |
1844 | |
1845 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x" , |
1846 | i, sg_len); |
1847 | |
1848 | if (sg_len > QEDI_BD_SPLIT_SZ) { |
1849 | sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_index: bd_count); |
1850 | } else { |
1851 | sg_frags = 1; |
1852 | bd[bd_count].sge_addr.lo = addr & 0xffffffff; |
1853 | bd[bd_count].sge_addr.hi = addr >> 32; |
1854 | bd[bd_count].sge_len = sg_len; |
1855 | } |
1856 | byte_count += sg_len; |
1857 | bd_count += sg_frags; |
1858 | } |
1859 | |
1860 | if (byte_count != scsi_bufflen(cmd: sc)) |
1861 | QEDI_ERR(&qedi->dbg_ctx, |
1862 | "byte_count = %d != scsi_bufflen = %d\n" , byte_count, |
1863 | scsi_bufflen(sc)); |
1864 | else |
1865 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n" , |
1866 | byte_count); |
1867 | |
1868 | WARN_ON(byte_count != scsi_bufflen(sc)); |
1869 | |
1870 | return bd_count; |
1871 | } |
1872 | |
1873 | static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) |
1874 | { |
1875 | int bd_count; |
1876 | struct scsi_cmnd *sc = cmd->scsi_cmd; |
1877 | |
1878 | if (scsi_sg_count(cmd: sc)) { |
1879 | bd_count = qedi_map_scsi_sg(qedi: cmd->conn->qedi, cmd); |
1880 | if (bd_count == 0) |
1881 | return; |
1882 | } else { |
1883 | struct scsi_sge *bd = cmd->io_tbl.sge_tbl; |
1884 | |
1885 | bd[0].sge_addr.lo = 0; |
1886 | bd[0].sge_addr.hi = 0; |
1887 | bd[0].sge_len = 0; |
1888 | bd_count = 0; |
1889 | } |
1890 | cmd->io_tbl.sge_valid = bd_count; |
1891 | } |
1892 | |
1893 | static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) |
1894 | { |
1895 | u32 dword; |
1896 | int lpcnt; |
1897 | u8 *srcp; |
1898 | |
1899 | lpcnt = sc->cmd_len / sizeof(dword); |
1900 | srcp = (u8 *)sc->cmnd; |
1901 | while (lpcnt--) { |
1902 | memcpy(&dword, (const void *)srcp, 4); |
1903 | *dstp = cpu_to_be32(dword); |
1904 | srcp += 4; |
1905 | dstp++; |
1906 | } |
1907 | if (sc->cmd_len & 0x3) { |
1908 | dword = (u32)srcp[0] | ((u32)srcp[1] << 8); |
1909 | *dstp = cpu_to_be32(dword); |
1910 | } |
1911 | } |
1912 | |
1913 | void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, |
1914 | u16 tid, int8_t direction) |
1915 | { |
1916 | struct qedi_io_log *io_log; |
1917 | struct iscsi_conn *conn = task->conn; |
1918 | struct qedi_conn *qedi_conn = conn->dd_data; |
1919 | struct scsi_cmnd *sc_cmd = task->sc; |
1920 | unsigned long flags; |
1921 | |
1922 | spin_lock_irqsave(&qedi->io_trace_lock, flags); |
1923 | |
1924 | io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; |
1925 | io_log->direction = direction; |
1926 | io_log->task_id = tid; |
1927 | io_log->cid = qedi_conn->iscsi_conn_id; |
1928 | io_log->lun = sc_cmd->device->lun; |
1929 | io_log->op = sc_cmd->cmnd[0]; |
1930 | io_log->lba[0] = sc_cmd->cmnd[2]; |
1931 | io_log->lba[1] = sc_cmd->cmnd[3]; |
1932 | io_log->lba[2] = sc_cmd->cmnd[4]; |
1933 | io_log->lba[3] = sc_cmd->cmnd[5]; |
1934 | io_log->bufflen = scsi_bufflen(cmd: sc_cmd); |
1935 | io_log->sg_count = scsi_sg_count(cmd: sc_cmd); |
1936 | io_log->fast_sgs = qedi->fast_sgls; |
1937 | io_log->cached_sgs = qedi->cached_sgls; |
1938 | io_log->slow_sgs = qedi->slow_sgls; |
1939 | io_log->cached_sge = qedi->use_cached_sge; |
1940 | io_log->slow_sge = qedi->use_slow_sge; |
1941 | io_log->fast_sge = qedi->use_fast_sge; |
1942 | io_log->result = sc_cmd->result; |
1943 | io_log->jiffies = jiffies; |
1944 | io_log->blk_req_cpu = smp_processor_id(); |
1945 | |
1946 | if (direction == QEDI_IO_TRACE_REQ) { |
1947 | /* For requests we only care about the submission CPU */ |
1948 | io_log->req_cpu = smp_processor_id() % qedi->num_queues; |
1949 | io_log->intr_cpu = 0; |
1950 | io_log->blk_rsp_cpu = 0; |
1951 | } else if (direction == QEDI_IO_TRACE_RSP) { |
1952 | io_log->req_cpu = smp_processor_id() % qedi->num_queues; |
1953 | io_log->intr_cpu = qedi->intr_cpu; |
1954 | io_log->blk_rsp_cpu = smp_processor_id(); |
1955 | } |
1956 | |
1957 | qedi->io_trace_idx++; |
1958 | if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) |
1959 | qedi->io_trace_idx = 0; |
1960 | |
1961 | qedi->use_cached_sge = false; |
1962 | qedi->use_slow_sge = false; |
1963 | qedi->use_fast_sge = false; |
1964 | |
1965 | spin_unlock_irqrestore(lock: &qedi->io_trace_lock, flags); |
1966 | } |
1967 | |
1968 | int qedi_iscsi_send_ioreq(struct iscsi_task *task) |
1969 | { |
1970 | struct iscsi_conn *conn = task->conn; |
1971 | struct iscsi_session *session = conn->session; |
1972 | struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); |
1973 | struct qedi_ctx *qedi = iscsi_host_priv(shost); |
1974 | struct qedi_conn *qedi_conn = conn->dd_data; |
1975 | struct qedi_cmd *cmd = task->dd_data; |
1976 | struct scsi_cmnd *sc = task->sc; |
1977 | struct iscsi_cmd_hdr ; |
1978 | struct scsi_sgl_task_params tx_sgl_task_params; |
1979 | struct scsi_sgl_task_params rx_sgl_task_params; |
1980 | struct scsi_sgl_task_params *prx_sgl = NULL; |
1981 | struct scsi_sgl_task_params *ptx_sgl = NULL; |
1982 | struct iscsi_task_params task_params; |
1983 | struct iscsi_conn_params conn_params; |
1984 | struct scsi_initiator_cmd_params cmd_params; |
1985 | struct iscsi_task_context *fw_task_ctx; |
1986 | struct iscsi_cls_conn *cls_conn; |
1987 | struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; |
1988 | enum iscsi_task_type task_type = MAX_ISCSI_TASK_TYPE; |
1989 | struct qedi_endpoint *ep; |
1990 | u32 scsi_lun[2]; |
1991 | s16 tid = 0; |
1992 | u16 sq_idx = 0; |
1993 | u16 cq_idx; |
1994 | int rval = 0; |
1995 | |
1996 | ep = qedi_conn->ep; |
1997 | cls_conn = qedi_conn->cls_conn; |
1998 | conn = cls_conn->dd_data; |
1999 | |
2000 | qedi_iscsi_map_sg_list(cmd); |
2001 | int_to_scsilun(sc->device->lun, (struct scsi_lun *)scsi_lun); |
2002 | |
2003 | tid = qedi_get_task_idx(qedi); |
2004 | if (tid == -1) |
2005 | return -ENOMEM; |
2006 | |
2007 | fw_task_ctx = |
2008 | (struct iscsi_task_context *)qedi_get_task_mem(info: &qedi->tasks, |
2009 | tid); |
2010 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); |
2011 | |
2012 | cmd->task_id = tid; |
2013 | |
2014 | memset(&task_params, 0, sizeof(task_params)); |
2015 | memset(&cmd_pdu_header, 0, sizeof(cmd_pdu_header)); |
2016 | memset(&tx_sgl_task_params, 0, sizeof(tx_sgl_task_params)); |
2017 | memset(&rx_sgl_task_params, 0, sizeof(rx_sgl_task_params)); |
2018 | memset(&conn_params, 0, sizeof(conn_params)); |
2019 | memset(&cmd_params, 0, sizeof(cmd_params)); |
2020 | |
2021 | cq_idx = smp_processor_id() % qedi->num_queues; |
2022 | /* Update header info */ |
2023 | SET_FIELD(cmd_pdu_header.flags_attr, ISCSI_CMD_HDR_ATTR, |
2024 | ISCSI_ATTR_SIMPLE); |
2025 | if (hdr->cdb[0] != TEST_UNIT_READY) { |
2026 | if (sc->sc_data_direction == DMA_TO_DEVICE) { |
2027 | SET_FIELD(cmd_pdu_header.flags_attr, |
2028 | ISCSI_CMD_HDR_WRITE, 1); |
2029 | task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; |
2030 | } else { |
2031 | SET_FIELD(cmd_pdu_header.flags_attr, |
2032 | ISCSI_CMD_HDR_READ, 1); |
2033 | task_type = ISCSI_TASK_TYPE_INITIATOR_READ; |
2034 | } |
2035 | } |
2036 | |
2037 | cmd_pdu_header.lun.lo = be32_to_cpu(scsi_lun[0]); |
2038 | cmd_pdu_header.lun.hi = be32_to_cpu(scsi_lun[1]); |
2039 | |
2040 | qedi_update_itt_map(qedi, tid, proto_itt: task->itt, qedi_cmd: cmd); |
2041 | cmd_pdu_header.itt = qedi_set_itt(tid, get_itt(task->itt)); |
2042 | cmd_pdu_header.expected_transfer_length = cpu_to_be32(hdr->data_length); |
2043 | cmd_pdu_header.hdr_second_dword = ntoh24(hdr->dlength); |
2044 | cmd_pdu_header.cmd_sn = be32_to_cpu(hdr->cmdsn); |
2045 | cmd_pdu_header.hdr_first_byte = hdr->opcode; |
2046 | qedi_cpy_scsi_cdb(sc, dstp: (u32 *)cmd_pdu_header.cdb); |
2047 | |
2048 | /* Fill tx AHS and rx buffer */ |
2049 | if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { |
2050 | tx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; |
2051 | tx_sgl_task_params.sgl_phys_addr.lo = |
2052 | (u32)(cmd->io_tbl.sge_tbl_dma); |
2053 | tx_sgl_task_params.sgl_phys_addr.hi = |
2054 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); |
2055 | tx_sgl_task_params.total_buffer_size = scsi_bufflen(cmd: sc); |
2056 | tx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; |
2057 | if (cmd->use_slowpath) |
2058 | tx_sgl_task_params.small_mid_sge = true; |
2059 | } else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { |
2060 | rx_sgl_task_params.sgl = cmd->io_tbl.sge_tbl; |
2061 | rx_sgl_task_params.sgl_phys_addr.lo = |
2062 | (u32)(cmd->io_tbl.sge_tbl_dma); |
2063 | rx_sgl_task_params.sgl_phys_addr.hi = |
2064 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); |
2065 | rx_sgl_task_params.total_buffer_size = scsi_bufflen(cmd: sc); |
2066 | rx_sgl_task_params.num_sges = cmd->io_tbl.sge_valid; |
2067 | } |
2068 | |
2069 | /* Add conn param */ |
2070 | conn_params.first_burst_length = conn->session->first_burst; |
2071 | conn_params.max_send_pdu_length = conn->max_xmit_dlength; |
2072 | conn_params.max_burst_length = conn->session->max_burst; |
2073 | if (conn->session->initial_r2t_en) |
2074 | conn_params.initial_r2t = true; |
2075 | if (conn->session->imm_data_en) |
2076 | conn_params.immediate_data = true; |
2077 | |
2078 | /* Add cmd params */ |
2079 | cmd_params.sense_data_buffer_phys_addr.lo = (u32)cmd->sense_buffer_dma; |
2080 | cmd_params.sense_data_buffer_phys_addr.hi = |
2081 | (u32)((u64)cmd->sense_buffer_dma >> 32); |
2082 | /* Fill fw input params */ |
2083 | task_params.context = fw_task_ctx; |
2084 | task_params.conn_icid = (u16)qedi_conn->iscsi_conn_id; |
2085 | task_params.itid = tid; |
2086 | task_params.cq_rss_number = cq_idx; |
2087 | if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) |
2088 | task_params.tx_io_size = scsi_bufflen(cmd: sc); |
2089 | else if (task_type == ISCSI_TASK_TYPE_INITIATOR_READ) |
2090 | task_params.rx_io_size = scsi_bufflen(cmd: sc); |
2091 | |
2092 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
2093 | task_params.sqe = &ep->sq[sq_idx]; |
2094 | |
2095 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
2096 | "%s: %s-SGL: sg_len=0x%x num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x\n" , |
2097 | (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? |
2098 | "Write " : "Read " , (cmd->io_tbl.sge_valid == 1) ? |
2099 | "Single" : (cmd->use_slowpath ? "SLOW" : "FAST" ), |
2100 | (u16)cmd->io_tbl.sge_valid, scsi_bufflen(sc), |
2101 | (u32)(cmd->io_tbl.sge_tbl_dma), |
2102 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); |
2103 | |
2104 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
2105 | |
2106 | if (task_params.tx_io_size != 0) |
2107 | ptx_sgl = &tx_sgl_task_params; |
2108 | if (task_params.rx_io_size != 0) |
2109 | prx_sgl = &rx_sgl_task_params; |
2110 | |
2111 | rval = init_initiator_rw_iscsi_task(task_params: &task_params, conn_params: &conn_params, |
2112 | cmd_params: &cmd_params, cmd_pdu_header: &cmd_pdu_header, |
2113 | tx_sgl_params: ptx_sgl, rx_sgl_params: prx_sgl, |
2114 | NULL); |
2115 | if (rval) |
2116 | return -1; |
2117 | |
2118 | spin_lock(lock: &qedi_conn->list_lock); |
2119 | list_add_tail(new: &cmd->io_cmd, head: &qedi_conn->active_cmd_list); |
2120 | cmd->io_cmd_in_list = true; |
2121 | qedi_conn->active_cmd_count++; |
2122 | spin_unlock(lock: &qedi_conn->list_lock); |
2123 | |
2124 | qedi_ring_doorbell(qedi_conn); |
2125 | return 0; |
2126 | } |
2127 | |
2128 | int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) |
2129 | { |
2130 | struct iscsi_task_params task_params; |
2131 | struct qedi_endpoint *ep; |
2132 | struct iscsi_conn *conn = task->conn; |
2133 | struct qedi_conn *qedi_conn = conn->dd_data; |
2134 | struct qedi_cmd *cmd = task->dd_data; |
2135 | u16 sq_idx = 0; |
2136 | int rval = 0; |
2137 | |
2138 | QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, |
2139 | "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n" , |
2140 | cmd->task_id, get_itt(task->itt), task->state, |
2141 | cmd->state, qedi_conn->iscsi_conn_id); |
2142 | |
2143 | memset(&task_params, 0, sizeof(task_params)); |
2144 | ep = qedi_conn->ep; |
2145 | |
2146 | sq_idx = qedi_get_wqe_idx(qedi_conn); |
2147 | |
2148 | task_params.sqe = &ep->sq[sq_idx]; |
2149 | memset(task_params.sqe, 0, sizeof(struct iscsi_wqe)); |
2150 | task_params.itid = cmd->task_id; |
2151 | |
2152 | rval = init_cleanup_task(task_params: &task_params); |
2153 | if (rval) |
2154 | return rval; |
2155 | |
2156 | qedi_ring_doorbell(qedi_conn); |
2157 | return 0; |
2158 | } |
2159 | |