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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/blkdev.h> | |
11 | #include <scsi/scsi_tcq.h> | |
12 | #include <linux/delay.h> | |
13 | ||
14 | #include "qedi.h" | |
15 | #include "qedi_iscsi.h" | |
16 | #include "qedi_gbl.h" | |
17 | ||
18 | static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, | |
19 | struct iscsi_task *mtask); | |
20 | ||
21 | void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd) | |
22 | { | |
23 | struct scsi_cmnd *sc = cmd->scsi_cmd; | |
24 | ||
25 | if (cmd->io_tbl.sge_valid && sc) { | |
26 | cmd->io_tbl.sge_valid = 0; | |
27 | scsi_dma_unmap(sc); | |
28 | } | |
29 | } | |
30 | ||
31 | static void qedi_process_logout_resp(struct qedi_ctx *qedi, | |
32 | union iscsi_cqe *cqe, | |
33 | struct iscsi_task *task, | |
34 | struct qedi_conn *qedi_conn) | |
35 | { | |
36 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
37 | struct iscsi_logout_rsp *resp_hdr; | |
38 | struct iscsi_session *session = conn->session; | |
39 | struct iscsi_logout_response_hdr *cqe_logout_response; | |
40 | struct qedi_cmd *cmd; | |
41 | ||
42 | cmd = (struct qedi_cmd *)task->dd_data; | |
43 | cqe_logout_response = &cqe->cqe_common.iscsi_hdr.logout_response; | |
44 | spin_lock(&session->back_lock); | |
45 | resp_hdr = (struct iscsi_logout_rsp *)&qedi_conn->gen_pdu.resp_hdr; | |
46 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
47 | resp_hdr->opcode = cqe_logout_response->opcode; | |
48 | resp_hdr->flags = cqe_logout_response->flags; | |
49 | resp_hdr->hlength = 0; | |
50 | ||
51 | resp_hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); | |
52 | resp_hdr->statsn = cpu_to_be32(cqe_logout_response->stat_sn); | |
53 | resp_hdr->exp_cmdsn = cpu_to_be32(cqe_logout_response->exp_cmd_sn); | |
54 | resp_hdr->max_cmdsn = cpu_to_be32(cqe_logout_response->max_cmd_sn); | |
55 | ||
56 | resp_hdr->t2wait = cpu_to_be32(cqe_logout_response->time2wait); | |
57 | resp_hdr->t2retain = cpu_to_be32(cqe_logout_response->time2retain); | |
58 | ||
59 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, | |
60 | "Freeing tid=0x%x for cid=0x%x\n", | |
61 | cmd->task_id, qedi_conn->iscsi_conn_id); | |
62 | ||
63 | if (likely(cmd->io_cmd_in_list)) { | |
64 | cmd->io_cmd_in_list = false; | |
65 | list_del_init(&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 | ||
74 | cmd->state = RESPONSE_RECEIVED; | |
75 | qedi_clear_task_idx(qedi, cmd->task_id); | |
76 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); | |
77 | ||
78 | spin_unlock(&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 | u32 *tmp; | |
94 | ||
95 | cmd = (struct qedi_cmd *)task->dd_data; | |
96 | task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); | |
97 | ||
98 | cqe_text_response = &cqe->cqe_common.iscsi_hdr.text_response; | |
99 | spin_lock(&session->back_lock); | |
100 | resp_hdr_ptr = (struct iscsi_text_rsp *)&qedi_conn->gen_pdu.resp_hdr; | |
101 | memset(resp_hdr_ptr, 0, sizeof(struct iscsi_hdr)); | |
102 | resp_hdr_ptr->opcode = cqe_text_response->opcode; | |
103 | resp_hdr_ptr->flags = cqe_text_response->flags; | |
104 | resp_hdr_ptr->hlength = 0; | |
105 | ||
106 | hton24(resp_hdr_ptr->dlength, | |
107 | (cqe_text_response->hdr_second_dword & | |
108 | ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK)); | |
109 | tmp = (u32 *)resp_hdr_ptr->dlength; | |
110 | ||
111 | resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, | |
112 | conn->session->age); | |
113 | resp_hdr_ptr->ttt = cqe_text_response->ttt; | |
114 | resp_hdr_ptr->statsn = cpu_to_be32(cqe_text_response->stat_sn); | |
115 | resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_text_response->exp_cmd_sn); | |
116 | resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_text_response->max_cmd_sn); | |
117 | ||
118 | pld_len = cqe_text_response->hdr_second_dword & | |
119 | ISCSI_TEXT_RESPONSE_HDR_DATA_SEG_LEN_MASK; | |
120 | qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; | |
121 | ||
122 | memset(task_ctx, '\0', sizeof(*task_ctx)); | |
123 | ||
124 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, | |
125 | "Freeing tid=0x%x for cid=0x%x\n", | |
126 | cmd->task_id, qedi_conn->iscsi_conn_id); | |
127 | ||
128 | if (likely(cmd->io_cmd_in_list)) { | |
129 | cmd->io_cmd_in_list = false; | |
130 | list_del_init(&cmd->io_cmd); | |
131 | qedi_conn->active_cmd_count--; | |
132 | } else { | |
133 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
134 | "Active cmd list node already deleted, tid=0x%x, cid=0x%x, io_cmd_node=%p\n", | |
135 | cmd->task_id, qedi_conn->iscsi_conn_id, | |
136 | &cmd->io_cmd); | |
137 | } | |
138 | ||
139 | cmd->state = RESPONSE_RECEIVED; | |
140 | qedi_clear_task_idx(qedi, cmd->task_id); | |
141 | ||
142 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, | |
143 | qedi_conn->gen_pdu.resp_buf, | |
144 | (qedi_conn->gen_pdu.resp_wr_ptr - | |
145 | qedi_conn->gen_pdu.resp_buf)); | |
146 | spin_unlock(&session->back_lock); | |
147 | } | |
148 | ||
149 | static void qedi_tmf_resp_work(struct work_struct *work) | |
150 | { | |
151 | struct qedi_cmd *qedi_cmd = | |
152 | container_of(work, struct qedi_cmd, tmf_work); | |
153 | struct qedi_conn *qedi_conn = qedi_cmd->conn; | |
154 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
155 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
156 | struct iscsi_session *session = conn->session; | |
157 | struct iscsi_tm_rsp *resp_hdr_ptr; | |
158 | struct iscsi_cls_session *cls_sess; | |
159 | int rval = 0; | |
160 | ||
161 | set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
162 | resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; | |
163 | cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); | |
164 | ||
165 | iscsi_block_session(session->cls_session); | |
166 | rval = qedi_cleanup_all_io(qedi, qedi_conn, qedi_cmd->task, true); | |
167 | if (rval) { | |
ace7f46b MR |
168 | qedi_clear_task_idx(qedi, qedi_cmd->task_id); |
169 | iscsi_unblock_session(session->cls_session); | |
42a70abd | 170 | goto exit_tmf_resp; |
ace7f46b MR |
171 | } |
172 | ||
173 | iscsi_unblock_session(session->cls_session); | |
174 | qedi_clear_task_idx(qedi, qedi_cmd->task_id); | |
175 | ||
176 | spin_lock(&session->back_lock); | |
177 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); | |
178 | spin_unlock(&session->back_lock); | |
42a70abd DC |
179 | |
180 | exit_tmf_resp: | |
ace7f46b MR |
181 | kfree(resp_hdr_ptr); |
182 | clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
183 | } | |
184 | ||
185 | static void qedi_process_tmf_resp(struct qedi_ctx *qedi, | |
186 | union iscsi_cqe *cqe, | |
187 | struct iscsi_task *task, | |
188 | struct qedi_conn *qedi_conn) | |
189 | ||
190 | { | |
191 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
192 | struct iscsi_session *session = conn->session; | |
193 | struct iscsi_tmf_response_hdr *cqe_tmp_response; | |
194 | struct iscsi_tm_rsp *resp_hdr_ptr; | |
195 | struct iscsi_tm *tmf_hdr; | |
196 | struct qedi_cmd *qedi_cmd = NULL; | |
197 | u32 *tmp; | |
198 | ||
199 | cqe_tmp_response = &cqe->cqe_common.iscsi_hdr.tmf_response; | |
200 | ||
201 | qedi_cmd = task->dd_data; | |
202 | qedi_cmd->tmf_resp_buf = kzalloc(sizeof(*resp_hdr_ptr), GFP_KERNEL); | |
203 | if (!qedi_cmd->tmf_resp_buf) { | |
204 | QEDI_ERR(&qedi->dbg_ctx, | |
205 | "Failed to allocate resp buf, cid=0x%x\n", | |
206 | qedi_conn->iscsi_conn_id); | |
207 | return; | |
208 | } | |
209 | ||
210 | spin_lock(&session->back_lock); | |
211 | resp_hdr_ptr = (struct iscsi_tm_rsp *)qedi_cmd->tmf_resp_buf; | |
212 | memset(resp_hdr_ptr, 0, sizeof(struct iscsi_tm_rsp)); | |
213 | ||
214 | /* Fill up the header */ | |
215 | resp_hdr_ptr->opcode = cqe_tmp_response->opcode; | |
216 | resp_hdr_ptr->flags = cqe_tmp_response->hdr_flags; | |
217 | resp_hdr_ptr->response = cqe_tmp_response->hdr_response; | |
218 | resp_hdr_ptr->hlength = 0; | |
219 | ||
220 | hton24(resp_hdr_ptr->dlength, | |
221 | (cqe_tmp_response->hdr_second_dword & | |
222 | ISCSI_TMF_RESPONSE_HDR_DATA_SEG_LEN_MASK)); | |
223 | tmp = (u32 *)resp_hdr_ptr->dlength; | |
224 | resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, | |
225 | conn->session->age); | |
226 | resp_hdr_ptr->statsn = cpu_to_be32(cqe_tmp_response->stat_sn); | |
227 | resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_tmp_response->exp_cmd_sn); | |
228 | resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_tmp_response->max_cmd_sn); | |
229 | ||
230 | tmf_hdr = (struct iscsi_tm *)qedi_cmd->task->hdr; | |
231 | ||
232 | if (likely(qedi_cmd->io_cmd_in_list)) { | |
233 | qedi_cmd->io_cmd_in_list = false; | |
234 | list_del_init(&qedi_cmd->io_cmd); | |
235 | qedi_conn->active_cmd_count--; | |
236 | } | |
237 | ||
238 | if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
239 | ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || | |
240 | ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
241 | ISCSI_TM_FUNC_TARGET_WARM_RESET) || | |
242 | ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
243 | ISCSI_TM_FUNC_TARGET_COLD_RESET)) { | |
244 | INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_resp_work); | |
245 | queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); | |
246 | goto unblock_sess; | |
247 | } | |
248 | ||
249 | qedi_clear_task_idx(qedi, qedi_cmd->task_id); | |
250 | ||
251 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, NULL, 0); | |
252 | kfree(resp_hdr_ptr); | |
253 | ||
254 | unblock_sess: | |
255 | spin_unlock(&session->back_lock); | |
256 | } | |
257 | ||
258 | static void qedi_process_login_resp(struct qedi_ctx *qedi, | |
259 | union iscsi_cqe *cqe, | |
260 | struct iscsi_task *task, | |
261 | struct qedi_conn *qedi_conn) | |
262 | { | |
263 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
264 | struct iscsi_session *session = conn->session; | |
265 | struct iscsi_task_context *task_ctx; | |
266 | struct iscsi_login_rsp *resp_hdr_ptr; | |
267 | struct iscsi_login_response_hdr *cqe_login_response; | |
268 | struct qedi_cmd *cmd; | |
269 | int pld_len; | |
270 | u32 *tmp; | |
271 | ||
272 | cmd = (struct qedi_cmd *)task->dd_data; | |
273 | ||
274 | cqe_login_response = &cqe->cqe_common.iscsi_hdr.login_response; | |
275 | task_ctx = qedi_get_task_mem(&qedi->tasks, cmd->task_id); | |
276 | ||
277 | spin_lock(&session->back_lock); | |
278 | resp_hdr_ptr = (struct iscsi_login_rsp *)&qedi_conn->gen_pdu.resp_hdr; | |
279 | memset(resp_hdr_ptr, 0, sizeof(struct iscsi_login_rsp)); | |
280 | resp_hdr_ptr->opcode = cqe_login_response->opcode; | |
281 | resp_hdr_ptr->flags = cqe_login_response->flags_attr; | |
282 | resp_hdr_ptr->hlength = 0; | |
283 | ||
284 | hton24(resp_hdr_ptr->dlength, | |
285 | (cqe_login_response->hdr_second_dword & | |
286 | ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK)); | |
287 | tmp = (u32 *)resp_hdr_ptr->dlength; | |
288 | resp_hdr_ptr->itt = build_itt(cqe->cqe_solicited.itid, | |
289 | conn->session->age); | |
290 | resp_hdr_ptr->tsih = cqe_login_response->tsih; | |
291 | resp_hdr_ptr->statsn = cpu_to_be32(cqe_login_response->stat_sn); | |
292 | resp_hdr_ptr->exp_cmdsn = cpu_to_be32(cqe_login_response->exp_cmd_sn); | |
293 | resp_hdr_ptr->max_cmdsn = cpu_to_be32(cqe_login_response->max_cmd_sn); | |
294 | resp_hdr_ptr->status_class = cqe_login_response->status_class; | |
295 | resp_hdr_ptr->status_detail = cqe_login_response->status_detail; | |
296 | pld_len = cqe_login_response->hdr_second_dword & | |
297 | ISCSI_LOGIN_RESPONSE_HDR_DATA_SEG_LEN_MASK; | |
298 | qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf + pld_len; | |
299 | ||
300 | if (likely(cmd->io_cmd_in_list)) { | |
301 | cmd->io_cmd_in_list = false; | |
302 | list_del_init(&cmd->io_cmd); | |
303 | qedi_conn->active_cmd_count--; | |
304 | } | |
305 | ||
306 | memset(task_ctx, '\0', sizeof(*task_ctx)); | |
307 | ||
308 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr_ptr, | |
309 | qedi_conn->gen_pdu.resp_buf, | |
310 | (qedi_conn->gen_pdu.resp_wr_ptr - | |
311 | qedi_conn->gen_pdu.resp_buf)); | |
312 | ||
313 | spin_unlock(&session->back_lock); | |
314 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, | |
315 | "Freeing tid=0x%x for cid=0x%x\n", | |
316 | cmd->task_id, qedi_conn->iscsi_conn_id); | |
317 | cmd->state = RESPONSE_RECEIVED; | |
318 | qedi_clear_task_idx(qedi, cmd->task_id); | |
319 | } | |
320 | ||
321 | static void qedi_get_rq_bdq_buf(struct qedi_ctx *qedi, | |
322 | struct iscsi_cqe_unsolicited *cqe, | |
323 | char *ptr, int len) | |
324 | { | |
325 | u16 idx = 0; | |
326 | ||
327 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
328 | "pld_len [%d], bdq_prod_idx [%d], idx [%d]\n", | |
329 | len, qedi->bdq_prod_idx, | |
330 | (qedi->bdq_prod_idx % qedi->rq_num_entries)); | |
331 | ||
332 | /* Obtain buffer address from rqe_opaque */ | |
333 | idx = cqe->rqe_opaque.lo; | |
334 | if ((idx < 0) || (idx > (QEDI_BDQ_NUM - 1))) { | |
335 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
336 | "wrong idx %d returned by FW, dropping the unsolicited pkt\n", | |
337 | idx); | |
338 | return; | |
339 | } | |
340 | ||
341 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
342 | "rqe_opaque.lo [0x%p], rqe_opaque.hi [0x%p], idx [%d]\n", | |
343 | cqe->rqe_opaque.lo, cqe->rqe_opaque.hi, idx); | |
344 | ||
345 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
346 | "unsol_cqe_type = %d\n", cqe->unsol_cqe_type); | |
347 | switch (cqe->unsol_cqe_type) { | |
348 | case ISCSI_CQE_UNSOLICITED_SINGLE: | |
349 | case ISCSI_CQE_UNSOLICITED_FIRST: | |
350 | if (len) | |
351 | memcpy(ptr, (void *)qedi->bdq[idx].buf_addr, len); | |
352 | break; | |
353 | case ISCSI_CQE_UNSOLICITED_MIDDLE: | |
354 | case ISCSI_CQE_UNSOLICITED_LAST: | |
355 | break; | |
356 | default: | |
357 | break; | |
358 | } | |
359 | } | |
360 | ||
361 | static void qedi_put_rq_bdq_buf(struct qedi_ctx *qedi, | |
362 | struct iscsi_cqe_unsolicited *cqe, | |
363 | int count) | |
364 | { | |
365 | u16 tmp; | |
366 | u16 idx = 0; | |
367 | struct scsi_bd *pbl; | |
368 | ||
369 | /* Obtain buffer address from rqe_opaque */ | |
370 | idx = cqe->rqe_opaque.lo; | |
371 | if ((idx < 0) || (idx > (QEDI_BDQ_NUM - 1))) { | |
372 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
373 | "wrong idx %d returned by FW, dropping the unsolicited pkt\n", | |
374 | idx); | |
375 | return; | |
376 | } | |
377 | ||
378 | pbl = (struct scsi_bd *)qedi->bdq_pbl; | |
379 | pbl += (qedi->bdq_prod_idx % qedi->rq_num_entries); | |
380 | pbl->address.hi = cpu_to_le32(QEDI_U64_HI(qedi->bdq[idx].buf_dma)); | |
381 | pbl->address.lo = cpu_to_le32(QEDI_U64_LO(qedi->bdq[idx].buf_dma)); | |
382 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
383 | "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx] idx [%d]\n", | |
384 | pbl, pbl->address.hi, pbl->address.lo, idx); | |
385 | pbl->opaque.hi = 0; | |
386 | pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(idx)); | |
387 | ||
388 | /* Increment producer to let f/w know we've handled the frame */ | |
389 | qedi->bdq_prod_idx += count; | |
390 | ||
391 | writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); | |
392 | tmp = readw(qedi->bdq_primary_prod); | |
393 | ||
394 | writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); | |
395 | tmp = readw(qedi->bdq_secondary_prod); | |
396 | } | |
397 | ||
398 | static void qedi_unsol_pdu_adjust_bdq(struct qedi_ctx *qedi, | |
399 | struct iscsi_cqe_unsolicited *cqe, | |
400 | u32 pdu_len, u32 num_bdqs, | |
401 | char *bdq_data) | |
402 | { | |
403 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
404 | "num_bdqs [%d]\n", num_bdqs); | |
405 | ||
406 | qedi_get_rq_bdq_buf(qedi, cqe, bdq_data, pdu_len); | |
407 | qedi_put_rq_bdq_buf(qedi, cqe, (num_bdqs + 1)); | |
408 | } | |
409 | ||
410 | static int qedi_process_nopin_mesg(struct qedi_ctx *qedi, | |
411 | union iscsi_cqe *cqe, | |
412 | struct iscsi_task *task, | |
413 | struct qedi_conn *qedi_conn, u16 que_idx) | |
414 | { | |
415 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
416 | struct iscsi_session *session = conn->session; | |
417 | struct iscsi_nop_in_hdr *cqe_nop_in; | |
418 | struct iscsi_nopin *hdr; | |
419 | struct qedi_cmd *cmd; | |
420 | int tgt_async_nop = 0; | |
421 | u32 lun[2]; | |
422 | u32 pdu_len, num_bdqs; | |
423 | char bdq_data[QEDI_BDQ_BUF_SIZE]; | |
424 | unsigned long flags; | |
425 | ||
426 | spin_lock_bh(&session->back_lock); | |
427 | cqe_nop_in = &cqe->cqe_common.iscsi_hdr.nop_in; | |
428 | ||
429 | pdu_len = cqe_nop_in->hdr_second_dword & | |
430 | ISCSI_NOP_IN_HDR_DATA_SEG_LEN_MASK; | |
431 | num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; | |
432 | ||
433 | hdr = (struct iscsi_nopin *)&qedi_conn->gen_pdu.resp_hdr; | |
434 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
435 | hdr->opcode = cqe_nop_in->opcode; | |
436 | hdr->max_cmdsn = cpu_to_be32(cqe_nop_in->max_cmd_sn); | |
437 | hdr->exp_cmdsn = cpu_to_be32(cqe_nop_in->exp_cmd_sn); | |
438 | hdr->statsn = cpu_to_be32(cqe_nop_in->stat_sn); | |
439 | hdr->ttt = cpu_to_be32(cqe_nop_in->ttt); | |
440 | ||
441 | if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { | |
442 | spin_lock_irqsave(&qedi->hba_lock, flags); | |
443 | qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, | |
444 | pdu_len, num_bdqs, bdq_data); | |
445 | hdr->itt = RESERVED_ITT; | |
446 | tgt_async_nop = 1; | |
447 | spin_unlock_irqrestore(&qedi->hba_lock, flags); | |
448 | goto done; | |
449 | } | |
450 | ||
451 | /* Response to one of our nop-outs */ | |
452 | if (task) { | |
453 | cmd = task->dd_data; | |
454 | hdr->flags = ISCSI_FLAG_CMD_FINAL; | |
455 | hdr->itt = build_itt(cqe->cqe_solicited.itid, | |
456 | conn->session->age); | |
457 | lun[0] = 0xffffffff; | |
458 | lun[1] = 0xffffffff; | |
459 | memcpy(&hdr->lun, lun, sizeof(struct scsi_lun)); | |
460 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, | |
461 | "Freeing tid=0x%x for cid=0x%x\n", | |
462 | cmd->task_id, qedi_conn->iscsi_conn_id); | |
463 | cmd->state = RESPONSE_RECEIVED; | |
464 | spin_lock(&qedi_conn->list_lock); | |
465 | if (likely(cmd->io_cmd_in_list)) { | |
466 | cmd->io_cmd_in_list = false; | |
467 | list_del_init(&cmd->io_cmd); | |
468 | qedi_conn->active_cmd_count--; | |
469 | } | |
470 | ||
471 | spin_unlock(&qedi_conn->list_lock); | |
472 | qedi_clear_task_idx(qedi, cmd->task_id); | |
473 | } | |
474 | ||
475 | done: | |
476 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, bdq_data, pdu_len); | |
477 | ||
478 | spin_unlock_bh(&session->back_lock); | |
479 | return tgt_async_nop; | |
480 | } | |
481 | ||
482 | static void qedi_process_async_mesg(struct qedi_ctx *qedi, | |
483 | union iscsi_cqe *cqe, | |
484 | struct iscsi_task *task, | |
485 | struct qedi_conn *qedi_conn, | |
486 | u16 que_idx) | |
487 | { | |
488 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
489 | struct iscsi_session *session = conn->session; | |
490 | struct iscsi_async_msg_hdr *cqe_async_msg; | |
491 | struct iscsi_async *resp_hdr; | |
492 | u32 lun[2]; | |
493 | u32 pdu_len, num_bdqs; | |
494 | char bdq_data[QEDI_BDQ_BUF_SIZE]; | |
495 | unsigned long flags; | |
496 | ||
497 | spin_lock_bh(&session->back_lock); | |
498 | ||
499 | cqe_async_msg = &cqe->cqe_common.iscsi_hdr.async_msg; | |
500 | pdu_len = cqe_async_msg->hdr_second_dword & | |
501 | ISCSI_ASYNC_MSG_HDR_DATA_SEG_LEN_MASK; | |
502 | num_bdqs = pdu_len / QEDI_BDQ_BUF_SIZE; | |
503 | ||
504 | if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { | |
505 | spin_lock_irqsave(&qedi->hba_lock, flags); | |
506 | qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, | |
507 | pdu_len, num_bdqs, bdq_data); | |
508 | spin_unlock_irqrestore(&qedi->hba_lock, flags); | |
509 | } | |
510 | ||
511 | resp_hdr = (struct iscsi_async *)&qedi_conn->gen_pdu.resp_hdr; | |
512 | memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); | |
513 | resp_hdr->opcode = cqe_async_msg->opcode; | |
514 | resp_hdr->flags = 0x80; | |
515 | ||
516 | lun[0] = cpu_to_be32(cqe_async_msg->lun.lo); | |
517 | lun[1] = cpu_to_be32(cqe_async_msg->lun.hi); | |
518 | memcpy(&resp_hdr->lun, lun, sizeof(struct scsi_lun)); | |
519 | resp_hdr->exp_cmdsn = cpu_to_be32(cqe_async_msg->exp_cmd_sn); | |
520 | resp_hdr->max_cmdsn = cpu_to_be32(cqe_async_msg->max_cmd_sn); | |
521 | resp_hdr->statsn = cpu_to_be32(cqe_async_msg->stat_sn); | |
522 | ||
523 | resp_hdr->async_event = cqe_async_msg->async_event; | |
524 | resp_hdr->async_vcode = cqe_async_msg->async_vcode; | |
525 | ||
526 | resp_hdr->param1 = cpu_to_be16(cqe_async_msg->param1_rsrv); | |
527 | resp_hdr->param2 = cpu_to_be16(cqe_async_msg->param2_rsrv); | |
528 | resp_hdr->param3 = cpu_to_be16(cqe_async_msg->param3_rsrv); | |
529 | ||
530 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, bdq_data, | |
531 | pdu_len); | |
532 | ||
533 | spin_unlock_bh(&session->back_lock); | |
534 | } | |
535 | ||
536 | static void qedi_process_reject_mesg(struct qedi_ctx *qedi, | |
537 | union iscsi_cqe *cqe, | |
538 | struct iscsi_task *task, | |
539 | struct qedi_conn *qedi_conn, | |
540 | uint16_t que_idx) | |
541 | { | |
542 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
543 | struct iscsi_session *session = conn->session; | |
544 | struct iscsi_reject_hdr *cqe_reject; | |
545 | struct iscsi_reject *hdr; | |
546 | u32 pld_len, num_bdqs; | |
547 | unsigned long flags; | |
548 | ||
549 | spin_lock_bh(&session->back_lock); | |
550 | cqe_reject = &cqe->cqe_common.iscsi_hdr.reject; | |
551 | pld_len = cqe_reject->hdr_second_dword & | |
552 | ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK; | |
553 | num_bdqs = pld_len / QEDI_BDQ_BUF_SIZE; | |
554 | ||
555 | if (cqe->cqe_common.cqe_type == ISCSI_CQE_TYPE_UNSOLICITED) { | |
556 | spin_lock_irqsave(&qedi->hba_lock, flags); | |
557 | qedi_unsol_pdu_adjust_bdq(qedi, &cqe->cqe_unsolicited, | |
558 | pld_len, num_bdqs, conn->data); | |
559 | spin_unlock_irqrestore(&qedi->hba_lock, flags); | |
560 | } | |
561 | hdr = (struct iscsi_reject *)&qedi_conn->gen_pdu.resp_hdr; | |
562 | memset(hdr, 0, sizeof(struct iscsi_hdr)); | |
563 | hdr->opcode = cqe_reject->opcode; | |
564 | hdr->reason = cqe_reject->hdr_reason; | |
565 | hdr->flags = cqe_reject->hdr_flags; | |
566 | hton24(hdr->dlength, (cqe_reject->hdr_second_dword & | |
567 | ISCSI_REJECT_HDR_DATA_SEG_LEN_MASK)); | |
568 | hdr->max_cmdsn = cpu_to_be32(cqe_reject->max_cmd_sn); | |
569 | hdr->exp_cmdsn = cpu_to_be32(cqe_reject->exp_cmd_sn); | |
570 | hdr->statsn = cpu_to_be32(cqe_reject->stat_sn); | |
571 | hdr->ffffffff = cpu_to_be32(0xffffffff); | |
572 | ||
573 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, | |
574 | conn->data, pld_len); | |
575 | spin_unlock_bh(&session->back_lock); | |
576 | } | |
577 | ||
578 | static void qedi_scsi_completion(struct qedi_ctx *qedi, | |
579 | union iscsi_cqe *cqe, | |
580 | struct iscsi_task *task, | |
581 | struct iscsi_conn *conn) | |
582 | { | |
583 | struct scsi_cmnd *sc_cmd; | |
584 | struct qedi_cmd *cmd = task->dd_data; | |
585 | struct iscsi_session *session = conn->session; | |
586 | struct iscsi_scsi_rsp *hdr; | |
587 | struct iscsi_data_in_hdr *cqe_data_in; | |
588 | int datalen = 0; | |
589 | struct qedi_conn *qedi_conn; | |
590 | u32 iscsi_cid; | |
591 | bool mark_cmd_node_deleted = false; | |
592 | u8 cqe_err_bits = 0; | |
593 | ||
594 | iscsi_cid = cqe->cqe_common.conn_id; | |
595 | qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; | |
596 | ||
597 | cqe_data_in = &cqe->cqe_common.iscsi_hdr.data_in; | |
598 | cqe_err_bits = | |
599 | cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; | |
600 | ||
601 | spin_lock_bh(&session->back_lock); | |
602 | /* get the scsi command */ | |
603 | sc_cmd = cmd->scsi_cmd; | |
604 | ||
605 | if (!sc_cmd) { | |
606 | QEDI_WARN(&qedi->dbg_ctx, "sc_cmd is NULL!\n"); | |
607 | goto error; | |
608 | } | |
609 | ||
610 | if (!sc_cmd->SCp.ptr) { | |
611 | QEDI_WARN(&qedi->dbg_ctx, | |
612 | "SCp.ptr is NULL, returned in another context.\n"); | |
613 | goto error; | |
614 | } | |
615 | ||
616 | if (!sc_cmd->request) { | |
617 | QEDI_WARN(&qedi->dbg_ctx, | |
618 | "sc_cmd->request is NULL, sc_cmd=%p.\n", | |
619 | sc_cmd); | |
620 | goto error; | |
621 | } | |
622 | ||
623 | if (!sc_cmd->request->special) { | |
624 | QEDI_WARN(&qedi->dbg_ctx, | |
625 | "request->special is NULL so request not valid, sc_cmd=%p.\n", | |
626 | sc_cmd); | |
627 | goto error; | |
628 | } | |
629 | ||
630 | if (!sc_cmd->request->q) { | |
631 | QEDI_WARN(&qedi->dbg_ctx, | |
632 | "request->q is NULL so request is not valid, sc_cmd=%p.\n", | |
633 | sc_cmd); | |
634 | goto error; | |
635 | } | |
636 | ||
637 | qedi_iscsi_unmap_sg_list(cmd); | |
638 | ||
639 | hdr = (struct iscsi_scsi_rsp *)task->hdr; | |
640 | hdr->opcode = cqe_data_in->opcode; | |
641 | hdr->max_cmdsn = cpu_to_be32(cqe_data_in->max_cmd_sn); | |
642 | hdr->exp_cmdsn = cpu_to_be32(cqe_data_in->exp_cmd_sn); | |
643 | hdr->itt = build_itt(cqe->cqe_solicited.itid, conn->session->age); | |
644 | hdr->response = cqe_data_in->reserved1; | |
645 | hdr->cmd_status = cqe_data_in->status_rsvd; | |
646 | hdr->flags = cqe_data_in->flags; | |
647 | hdr->residual_count = cpu_to_be32(cqe_data_in->residual_count); | |
648 | ||
649 | if (hdr->cmd_status == SAM_STAT_CHECK_CONDITION) { | |
650 | datalen = cqe_data_in->reserved2 & | |
651 | ISCSI_COMMON_HDR_DATA_SEG_LEN_MASK; | |
652 | memcpy((char *)conn->data, (char *)cmd->sense_buffer, datalen); | |
653 | } | |
654 | ||
655 | /* If f/w reports data underrun err then set residual to IO transfer | |
656 | * length, set Underrun flag and clear Overrun flag explicitly | |
657 | */ | |
658 | if (unlikely(cqe_err_bits && | |
659 | GET_FIELD(cqe_err_bits, CQE_ERROR_BITMAP_UNDER_RUN_ERR))) { | |
660 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
661 | "Under flow itt=0x%x proto flags=0x%x tid=0x%x cid 0x%x fw resid 0x%x sc dlen 0x%x\n", | |
662 | hdr->itt, cqe_data_in->flags, cmd->task_id, | |
663 | qedi_conn->iscsi_conn_id, hdr->residual_count, | |
664 | scsi_bufflen(sc_cmd)); | |
665 | hdr->residual_count = cpu_to_be32(scsi_bufflen(sc_cmd)); | |
666 | hdr->flags |= ISCSI_FLAG_CMD_UNDERFLOW; | |
667 | hdr->flags &= (~ISCSI_FLAG_CMD_OVERFLOW); | |
668 | } | |
669 | ||
670 | spin_lock(&qedi_conn->list_lock); | |
671 | if (likely(cmd->io_cmd_in_list)) { | |
672 | cmd->io_cmd_in_list = false; | |
673 | list_del_init(&cmd->io_cmd); | |
674 | qedi_conn->active_cmd_count--; | |
675 | mark_cmd_node_deleted = true; | |
676 | } | |
677 | spin_unlock(&qedi_conn->list_lock); | |
678 | ||
679 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, | |
680 | "Freeing tid=0x%x for cid=0x%x\n", | |
681 | cmd->task_id, qedi_conn->iscsi_conn_id); | |
682 | cmd->state = RESPONSE_RECEIVED; | |
683 | if (qedi_io_tracing) | |
684 | qedi_trace_io(qedi, task, cmd->task_id, QEDI_IO_TRACE_RSP); | |
685 | ||
686 | qedi_clear_task_idx(qedi, cmd->task_id); | |
687 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, | |
688 | conn->data, datalen); | |
689 | error: | |
690 | spin_unlock_bh(&session->back_lock); | |
691 | } | |
692 | ||
693 | static void qedi_mtask_completion(struct qedi_ctx *qedi, | |
694 | union iscsi_cqe *cqe, | |
695 | struct iscsi_task *task, | |
696 | struct qedi_conn *conn, uint16_t que_idx) | |
697 | { | |
698 | struct iscsi_conn *iscsi_conn; | |
699 | u32 hdr_opcode; | |
700 | ||
701 | hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; | |
702 | iscsi_conn = conn->cls_conn->dd_data; | |
703 | ||
704 | switch (hdr_opcode) { | |
705 | case ISCSI_OPCODE_SCSI_RESPONSE: | |
706 | case ISCSI_OPCODE_DATA_IN: | |
707 | qedi_scsi_completion(qedi, cqe, task, iscsi_conn); | |
708 | break; | |
709 | case ISCSI_OPCODE_LOGIN_RESPONSE: | |
710 | qedi_process_login_resp(qedi, cqe, task, conn); | |
711 | break; | |
712 | case ISCSI_OPCODE_TMF_RESPONSE: | |
713 | qedi_process_tmf_resp(qedi, cqe, task, conn); | |
714 | break; | |
715 | case ISCSI_OPCODE_TEXT_RESPONSE: | |
716 | qedi_process_text_resp(qedi, cqe, task, conn); | |
717 | break; | |
718 | case ISCSI_OPCODE_LOGOUT_RESPONSE: | |
719 | qedi_process_logout_resp(qedi, cqe, task, conn); | |
720 | break; | |
721 | case ISCSI_OPCODE_NOP_IN: | |
722 | qedi_process_nopin_mesg(qedi, cqe, task, conn, que_idx); | |
723 | break; | |
724 | default: | |
725 | QEDI_ERR(&qedi->dbg_ctx, "unknown opcode\n"); | |
726 | } | |
727 | } | |
728 | ||
729 | static void qedi_process_nopin_local_cmpl(struct qedi_ctx *qedi, | |
730 | struct iscsi_cqe_solicited *cqe, | |
731 | struct iscsi_task *task, | |
732 | struct qedi_conn *qedi_conn) | |
733 | { | |
734 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
735 | struct iscsi_session *session = conn->session; | |
736 | struct qedi_cmd *cmd = task->dd_data; | |
737 | ||
738 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UNSOL, | |
739 | "itid=0x%x, cmd task id=0x%x\n", | |
740 | cqe->itid, cmd->task_id); | |
741 | ||
742 | cmd->state = RESPONSE_RECEIVED; | |
743 | qedi_clear_task_idx(qedi, cmd->task_id); | |
744 | ||
745 | spin_lock_bh(&session->back_lock); | |
746 | __iscsi_put_task(task); | |
747 | spin_unlock_bh(&session->back_lock); | |
748 | } | |
749 | ||
750 | static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, | |
751 | struct iscsi_cqe_solicited *cqe, | |
752 | struct iscsi_task *task, | |
753 | struct iscsi_conn *conn) | |
754 | { | |
755 | struct qedi_work_map *work, *work_tmp; | |
756 | u32 proto_itt = cqe->itid; | |
757 | u32 ptmp_itt = 0; | |
758 | itt_t protoitt = 0; | |
759 | int found = 0; | |
760 | struct qedi_cmd *qedi_cmd = NULL; | |
761 | u32 rtid = 0; | |
762 | u32 iscsi_cid; | |
763 | struct qedi_conn *qedi_conn; | |
764 | struct qedi_cmd *cmd_new, *dbg_cmd; | |
765 | struct iscsi_task *mtask; | |
766 | struct iscsi_tm *tmf_hdr = NULL; | |
767 | ||
768 | iscsi_cid = cqe->conn_id; | |
769 | qedi_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; | |
770 | ||
771 | /* Based on this itt get the corresponding qedi_cmd */ | |
772 | spin_lock_bh(&qedi_conn->tmf_work_lock); | |
773 | list_for_each_entry_safe(work, work_tmp, &qedi_conn->tmf_work_list, | |
774 | list) { | |
775 | if (work->rtid == proto_itt) { | |
776 | /* We found the command */ | |
777 | qedi_cmd = work->qedi_cmd; | |
778 | if (!qedi_cmd->list_tmf_work) { | |
779 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
780 | "TMF work not found, cqe->tid=0x%x, cid=0x%x\n", | |
781 | proto_itt, qedi_conn->iscsi_conn_id); | |
782 | WARN_ON(1); | |
783 | } | |
784 | found = 1; | |
785 | mtask = qedi_cmd->task; | |
786 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; | |
787 | rtid = work->rtid; | |
788 | ||
789 | list_del_init(&work->list); | |
790 | kfree(work); | |
791 | qedi_cmd->list_tmf_work = NULL; | |
792 | } | |
793 | } | |
794 | spin_unlock_bh(&qedi_conn->tmf_work_lock); | |
795 | ||
796 | if (found) { | |
797 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
798 | "TMF work, cqe->tid=0x%x, tmf flags=0x%x, cid=0x%x\n", | |
799 | proto_itt, tmf_hdr->flags, qedi_conn->iscsi_conn_id); | |
800 | ||
801 | if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
802 | ISCSI_TM_FUNC_ABORT_TASK) { | |
803 | spin_lock_bh(&conn->session->back_lock); | |
804 | ||
805 | protoitt = build_itt(get_itt(tmf_hdr->rtt), | |
806 | conn->session->age); | |
807 | task = iscsi_itt_to_task(conn, protoitt); | |
808 | ||
809 | spin_unlock_bh(&conn->session->back_lock); | |
810 | ||
811 | if (!task) { | |
812 | QEDI_NOTICE(&qedi->dbg_ctx, | |
813 | "IO task completed, tmf rtt=0x%x, cid=0x%x\n", | |
814 | get_itt(tmf_hdr->rtt), | |
815 | qedi_conn->iscsi_conn_id); | |
816 | return; | |
817 | } | |
818 | ||
819 | dbg_cmd = task->dd_data; | |
820 | ||
821 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
822 | "Abort tmf rtt=0x%x, i/o itt=0x%x, i/o tid=0x%x, cid=0x%x\n", | |
823 | get_itt(tmf_hdr->rtt), get_itt(task->itt), | |
824 | dbg_cmd->task_id, qedi_conn->iscsi_conn_id); | |
825 | ||
826 | if (qedi_cmd->state == CLEANUP_WAIT_FAILED) | |
827 | qedi_cmd->state = CLEANUP_RECV; | |
828 | ||
829 | qedi_clear_task_idx(qedi_conn->qedi, rtid); | |
830 | ||
831 | spin_lock(&qedi_conn->list_lock); | |
832 | list_del_init(&dbg_cmd->io_cmd); | |
833 | qedi_conn->active_cmd_count--; | |
834 | spin_unlock(&qedi_conn->list_lock); | |
835 | qedi_cmd->state = CLEANUP_RECV; | |
836 | wake_up_interruptible(&qedi_conn->wait_queue); | |
837 | } | |
838 | } else if (qedi_conn->cmd_cleanup_req > 0) { | |
839 | spin_lock_bh(&conn->session->back_lock); | |
840 | qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); | |
841 | protoitt = build_itt(ptmp_itt, conn->session->age); | |
842 | task = iscsi_itt_to_task(conn, protoitt); | |
843 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
844 | "cleanup io itid=0x%x, protoitt=0x%x, cmd_cleanup_cmpl=%d, cid=0x%x\n", | |
845 | cqe->itid, protoitt, qedi_conn->cmd_cleanup_cmpl, | |
846 | qedi_conn->iscsi_conn_id); | |
847 | ||
848 | spin_unlock_bh(&conn->session->back_lock); | |
849 | if (!task) { | |
850 | QEDI_NOTICE(&qedi->dbg_ctx, | |
851 | "task is null, itid=0x%x, cid=0x%x\n", | |
852 | cqe->itid, qedi_conn->iscsi_conn_id); | |
853 | return; | |
854 | } | |
855 | qedi_conn->cmd_cleanup_cmpl++; | |
856 | wake_up(&qedi_conn->wait_queue); | |
857 | cmd_new = task->dd_data; | |
858 | ||
859 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_TID, | |
860 | "Freeing tid=0x%x for cid=0x%x\n", | |
861 | cqe->itid, qedi_conn->iscsi_conn_id); | |
862 | qedi_clear_task_idx(qedi_conn->qedi, cqe->itid); | |
863 | ||
864 | } else { | |
865 | qedi_get_proto_itt(qedi, cqe->itid, &ptmp_itt); | |
866 | protoitt = build_itt(ptmp_itt, conn->session->age); | |
867 | task = iscsi_itt_to_task(conn, protoitt); | |
868 | QEDI_ERR(&qedi->dbg_ctx, | |
869 | "Delayed or untracked cleanup response, itt=0x%x, tid=0x%x, cid=0x%x, task=%p\n", | |
870 | protoitt, cqe->itid, qedi_conn->iscsi_conn_id, task); | |
871 | WARN_ON(1); | |
872 | } | |
873 | } | |
874 | ||
875 | void qedi_fp_process_cqes(struct qedi_work *work) | |
876 | { | |
877 | struct qedi_ctx *qedi = work->qedi; | |
878 | union iscsi_cqe *cqe = &work->cqe; | |
879 | struct iscsi_task *task = NULL; | |
880 | struct iscsi_nopout *nopout_hdr; | |
881 | struct qedi_conn *q_conn; | |
882 | struct iscsi_conn *conn; | |
883 | struct qedi_cmd *qedi_cmd; | |
884 | u32 comp_type; | |
885 | u32 iscsi_cid; | |
886 | u32 hdr_opcode; | |
887 | u16 que_idx = work->que_idx; | |
888 | u8 cqe_err_bits = 0; | |
889 | ||
890 | comp_type = cqe->cqe_common.cqe_type; | |
891 | hdr_opcode = cqe->cqe_common.iscsi_hdr.common.hdr_first_byte; | |
892 | cqe_err_bits = | |
893 | cqe->cqe_common.error_bitmap.error_bits.cqe_error_status_bits; | |
894 | ||
895 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
896 | "fw_cid=0x%x, cqe type=0x%x, opcode=0x%x\n", | |
897 | cqe->cqe_common.conn_id, comp_type, hdr_opcode); | |
898 | ||
899 | if (comp_type >= MAX_ISCSI_CQES_TYPE) { | |
900 | QEDI_WARN(&qedi->dbg_ctx, "Invalid CqE type\n"); | |
901 | return; | |
902 | } | |
903 | ||
904 | iscsi_cid = cqe->cqe_common.conn_id; | |
905 | q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; | |
906 | if (!q_conn) { | |
907 | QEDI_WARN(&qedi->dbg_ctx, | |
908 | "Session no longer exists for cid=0x%x!!\n", | |
909 | iscsi_cid); | |
910 | return; | |
911 | } | |
912 | ||
913 | conn = q_conn->cls_conn->dd_data; | |
914 | ||
915 | if (unlikely(cqe_err_bits && | |
916 | GET_FIELD(cqe_err_bits, | |
917 | CQE_ERROR_BITMAP_DATA_DIGEST_ERR))) { | |
918 | iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST); | |
919 | return; | |
920 | } | |
921 | ||
922 | switch (comp_type) { | |
923 | case ISCSI_CQE_TYPE_SOLICITED: | |
924 | case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: | |
925 | qedi_cmd = container_of(work, struct qedi_cmd, cqe_work); | |
926 | task = qedi_cmd->task; | |
927 | if (!task) { | |
928 | QEDI_WARN(&qedi->dbg_ctx, "task is NULL\n"); | |
929 | return; | |
930 | } | |
931 | ||
932 | /* Process NOPIN local completion */ | |
933 | nopout_hdr = (struct iscsi_nopout *)task->hdr; | |
934 | if ((nopout_hdr->itt == RESERVED_ITT) && | |
935 | (cqe->cqe_solicited.itid != (u16)RESERVED_ITT)) { | |
936 | qedi_process_nopin_local_cmpl(qedi, &cqe->cqe_solicited, | |
937 | task, q_conn); | |
938 | } else { | |
939 | cqe->cqe_solicited.itid = | |
940 | qedi_get_itt(cqe->cqe_solicited); | |
941 | /* Process other solicited responses */ | |
942 | qedi_mtask_completion(qedi, cqe, task, q_conn, que_idx); | |
943 | } | |
944 | break; | |
945 | case ISCSI_CQE_TYPE_UNSOLICITED: | |
946 | switch (hdr_opcode) { | |
947 | case ISCSI_OPCODE_NOP_IN: | |
948 | qedi_process_nopin_mesg(qedi, cqe, task, q_conn, | |
949 | que_idx); | |
950 | break; | |
951 | case ISCSI_OPCODE_ASYNC_MSG: | |
952 | qedi_process_async_mesg(qedi, cqe, task, q_conn, | |
953 | que_idx); | |
954 | break; | |
955 | case ISCSI_OPCODE_REJECT: | |
956 | qedi_process_reject_mesg(qedi, cqe, task, q_conn, | |
957 | que_idx); | |
958 | break; | |
959 | } | |
960 | goto exit_fp_process; | |
961 | case ISCSI_CQE_TYPE_DUMMY: | |
962 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "Dummy CqE\n"); | |
963 | goto exit_fp_process; | |
964 | case ISCSI_CQE_TYPE_TASK_CLEANUP: | |
965 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, "CleanUp CqE\n"); | |
966 | qedi_process_cmd_cleanup_resp(qedi, &cqe->cqe_solicited, task, | |
967 | conn); | |
968 | goto exit_fp_process; | |
969 | default: | |
970 | QEDI_ERR(&qedi->dbg_ctx, "Error cqe.\n"); | |
971 | break; | |
972 | } | |
973 | ||
974 | exit_fp_process: | |
975 | return; | |
976 | } | |
977 | ||
978 | static void qedi_add_to_sq(struct qedi_conn *qedi_conn, struct iscsi_task *task, | |
979 | u16 tid, uint16_t ptu_invalidate, int is_cleanup) | |
980 | { | |
981 | struct iscsi_wqe *wqe; | |
982 | struct iscsi_wqe_field *cont_field; | |
983 | struct qedi_endpoint *ep; | |
984 | struct scsi_cmnd *sc = task->sc; | |
985 | struct iscsi_login_req *login_hdr; | |
986 | struct qedi_cmd *cmd = task->dd_data; | |
987 | ||
988 | login_hdr = (struct iscsi_login_req *)task->hdr; | |
989 | ep = qedi_conn->ep; | |
990 | wqe = &ep->sq[ep->sq_prod_idx]; | |
991 | ||
992 | memset(wqe, 0, sizeof(*wqe)); | |
993 | ||
994 | ep->sq_prod_idx++; | |
995 | ep->fw_sq_prod_idx++; | |
996 | if (ep->sq_prod_idx == QEDI_SQ_SIZE) | |
997 | ep->sq_prod_idx = 0; | |
998 | ||
999 | if (is_cleanup) { | |
1000 | SET_FIELD(wqe->flags, ISCSI_WQE_WQE_TYPE, | |
1001 | ISCSI_WQE_TYPE_TASK_CLEANUP); | |
1002 | wqe->task_id = tid; | |
1003 | return; | |
1004 | } | |
1005 | ||
1006 | if (ptu_invalidate) { | |
1007 | SET_FIELD(wqe->flags, ISCSI_WQE_PTU_INVALIDATE, | |
1008 | ISCSI_WQE_SET_PTU_INVALIDATE); | |
1009 | } | |
1010 | ||
1011 | cont_field = &wqe->cont_prevtid_union.cont_field; | |
1012 | ||
1013 | switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { | |
1014 | case ISCSI_OP_LOGIN: | |
1015 | case ISCSI_OP_TEXT: | |
1016 | SET_FIELD(wqe->flags, ISCSI_WQE_WQE_TYPE, | |
1017 | ISCSI_WQE_TYPE_MIDDLE_PATH); | |
1018 | SET_FIELD(wqe->flags, ISCSI_WQE_NUM_FAST_SGES, | |
1019 | 1); | |
1020 | cont_field->contlen_cdbsize_field = ntoh24(login_hdr->dlength); | |
1021 | break; | |
1022 | case ISCSI_OP_LOGOUT: | |
1023 | case ISCSI_OP_NOOP_OUT: | |
1024 | case ISCSI_OP_SCSI_TMFUNC: | |
1025 | SET_FIELD(wqe->flags, ISCSI_WQE_WQE_TYPE, | |
1026 | ISCSI_WQE_TYPE_NORMAL); | |
1027 | break; | |
1028 | default: | |
1029 | if (!sc) | |
1030 | break; | |
1031 | ||
1032 | SET_FIELD(wqe->flags, ISCSI_WQE_WQE_TYPE, | |
1033 | ISCSI_WQE_TYPE_NORMAL); | |
1034 | cont_field->contlen_cdbsize_field = | |
1035 | (sc->sc_data_direction == DMA_TO_DEVICE) ? | |
1036 | scsi_bufflen(sc) : 0; | |
1037 | if (cmd->use_slowpath) | |
1038 | SET_FIELD(wqe->flags, ISCSI_WQE_NUM_FAST_SGES, 0); | |
1039 | else | |
1040 | SET_FIELD(wqe->flags, ISCSI_WQE_NUM_FAST_SGES, | |
1041 | (sc->sc_data_direction == | |
1042 | DMA_TO_DEVICE) ? | |
1043 | min((u16)QEDI_FAST_SGE_COUNT, | |
1044 | (u16)cmd->io_tbl.sge_valid) : 0); | |
1045 | break; | |
1046 | } | |
1047 | ||
1048 | wqe->task_id = tid; | |
1049 | /* Make sure SQ data is coherent */ | |
1050 | wmb(); | |
1051 | } | |
1052 | ||
1053 | static void qedi_ring_doorbell(struct qedi_conn *qedi_conn) | |
1054 | { | |
1055 | struct iscsi_db_data dbell = { 0 }; | |
1056 | ||
1057 | dbell.agg_flags = 0; | |
1058 | ||
1059 | dbell.params |= DB_DEST_XCM << ISCSI_DB_DATA_DEST_SHIFT; | |
1060 | dbell.params |= DB_AGG_CMD_SET << ISCSI_DB_DATA_AGG_CMD_SHIFT; | |
1061 | dbell.params |= | |
1062 | DQ_XCM_ISCSI_SQ_PROD_CMD << ISCSI_DB_DATA_AGG_VAL_SEL_SHIFT; | |
1063 | ||
1064 | dbell.sq_prod = qedi_conn->ep->fw_sq_prod_idx; | |
1065 | writel(*(u32 *)&dbell, qedi_conn->ep->p_doorbell); | |
1066 | ||
1067 | /* Make sure fw write idx is coherent, and include both memory barriers | |
1068 | * as a failsafe as for some architectures the call is the same but on | |
1069 | * others they are two different assembly operations. | |
1070 | */ | |
1071 | wmb(); | |
1072 | mmiowb(); | |
1073 | QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_MP_REQ, | |
1074 | "prod_idx=0x%x, fw_prod_idx=0x%x, cid=0x%x\n", | |
1075 | qedi_conn->ep->sq_prod_idx, qedi_conn->ep->fw_sq_prod_idx, | |
1076 | qedi_conn->iscsi_conn_id); | |
1077 | } | |
1078 | ||
1079 | int qedi_send_iscsi_login(struct qedi_conn *qedi_conn, | |
1080 | struct iscsi_task *task) | |
1081 | { | |
1082 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1083 | struct iscsi_task_context *fw_task_ctx; | |
1084 | struct iscsi_login_req *login_hdr; | |
1085 | struct iscsi_login_req_hdr *fw_login_req = NULL; | |
1086 | struct iscsi_cached_sge_ctx *cached_sge = NULL; | |
1087 | struct iscsi_sge *single_sge = NULL; | |
1088 | struct iscsi_sge *req_sge = NULL; | |
1089 | struct iscsi_sge *resp_sge = NULL; | |
1090 | struct qedi_cmd *qedi_cmd; | |
1091 | s16 ptu_invalidate = 0; | |
1092 | s16 tid = 0; | |
1093 | ||
1094 | req_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; | |
1095 | resp_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; | |
1096 | qedi_cmd = (struct qedi_cmd *)task->dd_data; | |
1097 | login_hdr = (struct iscsi_login_req *)task->hdr; | |
1098 | ||
1099 | tid = qedi_get_task_idx(qedi); | |
1100 | if (tid == -1) | |
1101 | return -ENOMEM; | |
1102 | ||
1103 | fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid); | |
1104 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); | |
1105 | ||
1106 | qedi_cmd->task_id = tid; | |
1107 | ||
1108 | /* Ystorm context */ | |
1109 | fw_login_req = &fw_task_ctx->ystorm_st_context.pdu_hdr.login_req; | |
1110 | fw_login_req->opcode = login_hdr->opcode; | |
1111 | fw_login_req->version_min = login_hdr->min_version; | |
1112 | fw_login_req->version_max = login_hdr->max_version; | |
1113 | fw_login_req->flags_attr = login_hdr->flags; | |
1114 | fw_login_req->isid_tabc = *((u16 *)login_hdr->isid + 2); | |
1115 | fw_login_req->isid_d = *((u32 *)login_hdr->isid); | |
1116 | fw_login_req->tsih = login_hdr->tsih; | |
1117 | qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); | |
1118 | fw_login_req->itt = qedi_set_itt(tid, get_itt(task->itt)); | |
1119 | fw_login_req->cid = qedi_conn->iscsi_conn_id; | |
1120 | fw_login_req->cmd_sn = be32_to_cpu(login_hdr->cmdsn); | |
1121 | fw_login_req->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); | |
1122 | fw_login_req->exp_stat_sn = 0; | |
1123 | ||
1124 | if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) { | |
1125 | ptu_invalidate = 1; | |
1126 | qedi->tid_reuse_count[tid] = 0; | |
1127 | } | |
1128 | ||
1129 | fw_task_ctx->ystorm_st_context.state.reuse_count = | |
1130 | qedi->tid_reuse_count[tid]; | |
1131 | fw_task_ctx->mstorm_st_context.reuse_count = | |
1132 | qedi->tid_reuse_count[tid]++; | |
1133 | cached_sge = | |
1134 | &fw_task_ctx->ystorm_st_context.state.sgl_ctx_union.cached_sge; | |
1135 | cached_sge->sge.sge_len = req_sge->sge_len; | |
1136 | cached_sge->sge.sge_addr.lo = (u32)(qedi_conn->gen_pdu.req_dma_addr); | |
1137 | cached_sge->sge.sge_addr.hi = | |
1138 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); | |
1139 | ||
1140 | /* Mstorm context */ | |
1141 | single_sge = &fw_task_ctx->mstorm_st_context.sgl_union.single_sge; | |
1142 | fw_task_ctx->mstorm_st_context.task_type = 0x2; | |
1143 | fw_task_ctx->mstorm_ag_context.task_cid = (u16)qedi_conn->iscsi_conn_id; | |
1144 | single_sge->sge_addr.lo = resp_sge->sge_addr.lo; | |
1145 | single_sge->sge_addr.hi = resp_sge->sge_addr.hi; | |
1146 | single_sge->sge_len = resp_sge->sge_len; | |
1147 | ||
1148 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
1149 | ISCSI_MFLAGS_SINGLE_SGE, 1); | |
1150 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
1151 | ISCSI_MFLAGS_SLOW_IO, 0); | |
1152 | fw_task_ctx->mstorm_st_context.sgl_size = 1; | |
1153 | fw_task_ctx->mstorm_st_context.rem_task_size = resp_sge->sge_len; | |
1154 | ||
1155 | /* Ustorm context */ | |
1156 | fw_task_ctx->ustorm_st_context.rem_rcv_len = resp_sge->sge_len; | |
1157 | fw_task_ctx->ustorm_st_context.exp_data_transfer_len = | |
1158 | ntoh24(login_hdr->dlength); | |
1159 | fw_task_ctx->ustorm_st_context.exp_data_sn = 0; | |
1160 | fw_task_ctx->ustorm_st_context.cq_rss_number = 0; | |
1161 | fw_task_ctx->ustorm_st_context.task_type = 0x2; | |
1162 | fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id; | |
1163 | fw_task_ctx->ustorm_ag_context.exp_data_acked = | |
1164 | ntoh24(login_hdr->dlength); | |
1165 | SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1, | |
1166 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); | |
1167 | SET_FIELD(fw_task_ctx->ustorm_st_context.flags, | |
1168 | USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 0); | |
1169 | ||
1170 | spin_lock(&qedi_conn->list_lock); | |
1171 | list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); | |
1172 | qedi_cmd->io_cmd_in_list = true; | |
1173 | qedi_conn->active_cmd_count++; | |
1174 | spin_unlock(&qedi_conn->list_lock); | |
1175 | ||
1176 | qedi_add_to_sq(qedi_conn, task, tid, ptu_invalidate, false); | |
1177 | qedi_ring_doorbell(qedi_conn); | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn, | |
1182 | struct iscsi_task *task) | |
1183 | { | |
1184 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1185 | struct iscsi_logout_req_hdr *fw_logout_req = NULL; | |
1186 | struct iscsi_task_context *fw_task_ctx = NULL; | |
1187 | struct iscsi_logout *logout_hdr = NULL; | |
1188 | struct qedi_cmd *qedi_cmd = NULL; | |
1189 | s16 tid = 0; | |
1190 | s16 ptu_invalidate = 0; | |
1191 | ||
1192 | qedi_cmd = (struct qedi_cmd *)task->dd_data; | |
1193 | logout_hdr = (struct iscsi_logout *)task->hdr; | |
1194 | ||
1195 | tid = qedi_get_task_idx(qedi); | |
1196 | if (tid == -1) | |
1197 | return -ENOMEM; | |
1198 | ||
1199 | fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid); | |
1200 | ||
1201 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); | |
1202 | qedi_cmd->task_id = tid; | |
1203 | ||
1204 | /* Ystorm context */ | |
1205 | fw_logout_req = &fw_task_ctx->ystorm_st_context.pdu_hdr.logout_req; | |
1206 | fw_logout_req->opcode = ISCSI_OPCODE_LOGOUT_REQUEST; | |
1207 | fw_logout_req->reason_code = 0x80 | logout_hdr->flags; | |
1208 | qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); | |
1209 | fw_logout_req->itt = qedi_set_itt(tid, get_itt(task->itt)); | |
1210 | fw_logout_req->exp_stat_sn = be32_to_cpu(logout_hdr->exp_statsn); | |
1211 | fw_logout_req->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); | |
1212 | ||
1213 | if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) { | |
1214 | ptu_invalidate = 1; | |
1215 | qedi->tid_reuse_count[tid] = 0; | |
1216 | } | |
1217 | fw_task_ctx->ystorm_st_context.state.reuse_count = | |
1218 | qedi->tid_reuse_count[tid]; | |
1219 | fw_task_ctx->mstorm_st_context.reuse_count = | |
1220 | qedi->tid_reuse_count[tid]++; | |
1221 | fw_logout_req->cid = qedi_conn->iscsi_conn_id; | |
1222 | fw_task_ctx->ystorm_st_context.state.buffer_offset[0] = 0; | |
1223 | ||
1224 | /* Mstorm context */ | |
1225 | fw_task_ctx->mstorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH; | |
1226 | fw_task_ctx->mstorm_ag_context.task_cid = (u16)qedi_conn->iscsi_conn_id; | |
1227 | ||
1228 | /* Ustorm context */ | |
1229 | fw_task_ctx->ustorm_st_context.rem_rcv_len = 0; | |
1230 | fw_task_ctx->ustorm_st_context.exp_data_transfer_len = 0; | |
1231 | fw_task_ctx->ustorm_st_context.exp_data_sn = 0; | |
1232 | fw_task_ctx->ustorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH; | |
1233 | fw_task_ctx->ustorm_st_context.cq_rss_number = 0; | |
1234 | ||
1235 | SET_FIELD(fw_task_ctx->ustorm_st_context.flags, | |
1236 | USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 0); | |
1237 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
1238 | ISCSI_REG1_NUM_FAST_SGES, 0); | |
1239 | ||
1240 | fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id; | |
1241 | SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1, | |
1242 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); | |
1243 | ||
1244 | spin_lock(&qedi_conn->list_lock); | |
1245 | list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); | |
1246 | qedi_cmd->io_cmd_in_list = true; | |
1247 | qedi_conn->active_cmd_count++; | |
1248 | spin_unlock(&qedi_conn->list_lock); | |
1249 | ||
1250 | qedi_add_to_sq(qedi_conn, task, tid, ptu_invalidate, false); | |
1251 | qedi_ring_doorbell(qedi_conn); | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, | |
1257 | struct iscsi_task *task, bool in_recovery) | |
1258 | { | |
1259 | int rval; | |
1260 | struct iscsi_task *ctask; | |
1261 | struct qedi_cmd *cmd, *cmd_tmp; | |
1262 | struct iscsi_tm *tmf_hdr; | |
1263 | unsigned int lun = 0; | |
1264 | bool lun_reset = false; | |
1265 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
1266 | struct iscsi_session *session = conn->session; | |
1267 | ||
1268 | /* From recovery, task is NULL or from tmf resp valid task */ | |
1269 | if (task) { | |
1270 | tmf_hdr = (struct iscsi_tm *)task->hdr; | |
1271 | ||
1272 | if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
1273 | ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) { | |
1274 | lun_reset = true; | |
1275 | lun = scsilun_to_int(&tmf_hdr->lun); | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | qedi_conn->cmd_cleanup_req = 0; | |
1280 | qedi_conn->cmd_cleanup_cmpl = 0; | |
1281 | ||
1282 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1283 | "active_cmd_count=%d, cid=0x%x, in_recovery=%d, lun_reset=%d\n", | |
1284 | qedi_conn->active_cmd_count, qedi_conn->iscsi_conn_id, | |
1285 | in_recovery, lun_reset); | |
1286 | ||
1287 | if (lun_reset) | |
1288 | spin_lock_bh(&session->back_lock); | |
1289 | ||
1290 | spin_lock(&qedi_conn->list_lock); | |
1291 | ||
1292 | list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, | |
1293 | io_cmd) { | |
1294 | ctask = cmd->task; | |
1295 | if (ctask == task) | |
1296 | continue; | |
1297 | ||
1298 | if (lun_reset) { | |
1299 | if (cmd->scsi_cmd && cmd->scsi_cmd->device) { | |
1300 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1301 | "tid=0x%x itt=0x%x scsi_cmd_ptr=%p device=%p task_state=%d cmd_state=0%x cid=0x%x\n", | |
1302 | cmd->task_id, get_itt(ctask->itt), | |
1303 | cmd->scsi_cmd, cmd->scsi_cmd->device, | |
1304 | ctask->state, cmd->state, | |
1305 | qedi_conn->iscsi_conn_id); | |
1306 | if (cmd->scsi_cmd->device->lun != lun) | |
1307 | continue; | |
1308 | } | |
1309 | } | |
1310 | qedi_conn->cmd_cleanup_req++; | |
1311 | qedi_iscsi_cleanup_task(ctask, true); | |
1312 | ||
1313 | list_del_init(&cmd->io_cmd); | |
1314 | qedi_conn->active_cmd_count--; | |
1315 | QEDI_WARN(&qedi->dbg_ctx, | |
1316 | "Deleted active cmd list node io_cmd=%p, cid=0x%x\n", | |
1317 | &cmd->io_cmd, qedi_conn->iscsi_conn_id); | |
1318 | } | |
1319 | ||
1320 | spin_unlock(&qedi_conn->list_lock); | |
1321 | ||
1322 | if (lun_reset) | |
1323 | spin_unlock_bh(&session->back_lock); | |
1324 | ||
1325 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1326 | "cmd_cleanup_req=%d, cid=0x%x\n", | |
1327 | qedi_conn->cmd_cleanup_req, | |
1328 | qedi_conn->iscsi_conn_id); | |
1329 | ||
1330 | rval = wait_event_interruptible_timeout(qedi_conn->wait_queue, | |
1331 | ((qedi_conn->cmd_cleanup_req == | |
1332 | qedi_conn->cmd_cleanup_cmpl) || | |
1333 | qedi_conn->ep), | |
1334 | 5 * HZ); | |
1335 | if (rval) { | |
1336 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1337 | "i/o cmd_cleanup_req=%d, equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", | |
1338 | qedi_conn->cmd_cleanup_req, | |
1339 | qedi_conn->cmd_cleanup_cmpl, | |
1340 | qedi_conn->iscsi_conn_id); | |
1341 | ||
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1346 | "i/o cmd_cleanup_req=%d, not equal to cmd_cleanup_cmpl=%d, cid=0x%x\n", | |
1347 | qedi_conn->cmd_cleanup_req, | |
1348 | qedi_conn->cmd_cleanup_cmpl, | |
1349 | qedi_conn->iscsi_conn_id); | |
1350 | ||
1351 | iscsi_host_for_each_session(qedi->shost, | |
1352 | qedi_mark_device_missing); | |
1353 | qedi_ops->common->drain(qedi->cdev); | |
1354 | ||
1355 | /* Enable IOs for all other sessions except current.*/ | |
1356 | if (!wait_event_interruptible_timeout(qedi_conn->wait_queue, | |
1357 | (qedi_conn->cmd_cleanup_req == | |
1358 | qedi_conn->cmd_cleanup_cmpl), | |
1359 | 5 * HZ)) { | |
1360 | iscsi_host_for_each_session(qedi->shost, | |
1361 | qedi_mark_device_available); | |
1362 | return -1; | |
1363 | } | |
1364 | ||
1365 | iscsi_host_for_each_session(qedi->shost, | |
1366 | qedi_mark_device_available); | |
1367 | ||
1368 | return 0; | |
1369 | } | |
1370 | ||
1371 | void qedi_clearsq(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, | |
1372 | struct iscsi_task *task) | |
1373 | { | |
1374 | struct qedi_endpoint *qedi_ep; | |
1375 | int rval; | |
1376 | ||
1377 | qedi_ep = qedi_conn->ep; | |
1378 | qedi_conn->cmd_cleanup_req = 0; | |
1379 | qedi_conn->cmd_cleanup_cmpl = 0; | |
1380 | ||
1381 | if (!qedi_ep) { | |
1382 | QEDI_WARN(&qedi->dbg_ctx, | |
1383 | "Cannot proceed, ep already disconnected, cid=0x%x\n", | |
1384 | qedi_conn->iscsi_conn_id); | |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1389 | "Clearing SQ for cid=0x%x, conn=%p, ep=%p\n", | |
1390 | qedi_conn->iscsi_conn_id, qedi_conn, qedi_ep); | |
1391 | ||
1392 | qedi_ops->clear_sq(qedi->cdev, qedi_ep->handle); | |
1393 | ||
1394 | rval = qedi_cleanup_all_io(qedi, qedi_conn, task, true); | |
1395 | if (rval) { | |
1396 | QEDI_ERR(&qedi->dbg_ctx, | |
1397 | "fatal error, need hard reset, cid=0x%x\n", | |
1398 | qedi_conn->iscsi_conn_id); | |
1399 | WARN_ON(1); | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi, | |
1404 | struct qedi_conn *qedi_conn, | |
1405 | struct iscsi_task *task, | |
1406 | struct qedi_cmd *qedi_cmd, | |
1407 | struct qedi_work_map *list_work) | |
1408 | { | |
1409 | struct qedi_cmd *cmd = (struct qedi_cmd *)task->dd_data; | |
1410 | int wait; | |
1411 | ||
1412 | wait = wait_event_interruptible_timeout(qedi_conn->wait_queue, | |
1413 | ((qedi_cmd->state == | |
1414 | CLEANUP_RECV) || | |
1415 | ((qedi_cmd->type == TYPEIO) && | |
1416 | (cmd->state == | |
1417 | RESPONSE_RECEIVED))), | |
1418 | 5 * HZ); | |
1419 | if (!wait) { | |
1420 | qedi_cmd->state = CLEANUP_WAIT_FAILED; | |
1421 | ||
1422 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1423 | "Cleanup timedout tid=0x%x, issue connection recovery, cid=0x%x\n", | |
1424 | cmd->task_id, qedi_conn->iscsi_conn_id); | |
1425 | ||
1426 | return -1; | |
1427 | } | |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | static void qedi_tmf_work(struct work_struct *work) | |
1432 | { | |
1433 | struct qedi_cmd *qedi_cmd = | |
1434 | container_of(work, struct qedi_cmd, tmf_work); | |
1435 | struct qedi_conn *qedi_conn = qedi_cmd->conn; | |
1436 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1437 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
1438 | struct iscsi_cls_session *cls_sess; | |
1439 | struct qedi_work_map *list_work = NULL; | |
1440 | struct iscsi_task *mtask; | |
1441 | struct qedi_cmd *cmd; | |
1442 | struct iscsi_task *ctask; | |
1443 | struct iscsi_tm *tmf_hdr; | |
1444 | s16 rval = 0; | |
1445 | s16 tid = 0; | |
1446 | ||
1447 | mtask = qedi_cmd->task; | |
1448 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; | |
1449 | cls_sess = iscsi_conn_to_session(qedi_conn->cls_conn); | |
1450 | set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
1451 | ||
1452 | ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); | |
1453 | if (!ctask || !ctask->sc) { | |
1454 | QEDI_ERR(&qedi->dbg_ctx, "Task already completed\n"); | |
1455 | goto abort_ret; | |
1456 | } | |
1457 | ||
1458 | cmd = (struct qedi_cmd *)ctask->dd_data; | |
1459 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1460 | "Abort tmf rtt=0x%x, cmd itt=0x%x, cmd tid=0x%x, cid=0x%x\n", | |
1461 | get_itt(tmf_hdr->rtt), get_itt(ctask->itt), cmd->task_id, | |
1462 | qedi_conn->iscsi_conn_id); | |
1463 | ||
1464 | if (do_not_recover) { | |
1465 | QEDI_ERR(&qedi->dbg_ctx, "DONT SEND CLEANUP/ABORT %d\n", | |
1466 | do_not_recover); | |
1467 | goto abort_ret; | |
1468 | } | |
1469 | ||
1470 | list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC); | |
1471 | if (!list_work) { | |
1472 | QEDI_ERR(&qedi->dbg_ctx, "Memory alloction failed\n"); | |
1473 | goto abort_ret; | |
1474 | } | |
1475 | ||
1476 | qedi_cmd->type = TYPEIO; | |
1477 | list_work->qedi_cmd = qedi_cmd; | |
1478 | list_work->rtid = cmd->task_id; | |
1479 | list_work->state = QEDI_WORK_SCHEDULED; | |
1480 | qedi_cmd->list_tmf_work = list_work; | |
1481 | ||
1482 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1483 | "Queue tmf work=%p, list node=%p, cid=0x%x, tmf flags=0x%x\n", | |
1484 | list_work->ptr_tmf_work, list_work, qedi_conn->iscsi_conn_id, | |
1485 | tmf_hdr->flags); | |
1486 | ||
1487 | spin_lock_bh(&qedi_conn->tmf_work_lock); | |
1488 | list_add_tail(&list_work->list, &qedi_conn->tmf_work_list); | |
1489 | spin_unlock_bh(&qedi_conn->tmf_work_lock); | |
1490 | ||
1491 | qedi_iscsi_cleanup_task(ctask, false); | |
1492 | ||
1493 | rval = qedi_wait_for_cleanup_request(qedi, qedi_conn, ctask, qedi_cmd, | |
1494 | list_work); | |
1495 | if (rval == -1) { | |
1496 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1497 | "FW cleanup got escalated, cid=0x%x\n", | |
1498 | qedi_conn->iscsi_conn_id); | |
1499 | goto ldel_exit; | |
1500 | } | |
1501 | ||
1502 | tid = qedi_get_task_idx(qedi); | |
1503 | if (tid == -1) { | |
1504 | QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", | |
1505 | qedi_conn->iscsi_conn_id); | |
1506 | goto ldel_exit; | |
1507 | } | |
1508 | ||
1509 | qedi_cmd->task_id = tid; | |
1510 | qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); | |
1511 | ||
1512 | abort_ret: | |
1513 | clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
1514 | return; | |
1515 | ||
1516 | ldel_exit: | |
1517 | spin_lock_bh(&qedi_conn->tmf_work_lock); | |
1518 | if (!qedi_cmd->list_tmf_work) { | |
1519 | list_del_init(&list_work->list); | |
1520 | qedi_cmd->list_tmf_work = NULL; | |
1521 | kfree(list_work); | |
1522 | } | |
1523 | spin_unlock_bh(&qedi_conn->tmf_work_lock); | |
1524 | ||
1525 | spin_lock(&qedi_conn->list_lock); | |
1526 | list_del_init(&cmd->io_cmd); | |
1527 | qedi_conn->active_cmd_count--; | |
1528 | spin_unlock(&qedi_conn->list_lock); | |
1529 | ||
1530 | clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
1531 | } | |
1532 | ||
1533 | static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, | |
1534 | struct iscsi_task *mtask) | |
1535 | { | |
1536 | struct iscsi_conn *conn = qedi_conn->cls_conn->dd_data; | |
1537 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1538 | struct iscsi_task_context *fw_task_ctx; | |
1539 | struct iscsi_tmf_request_hdr *fw_tmf_request; | |
1540 | struct iscsi_sge *single_sge; | |
1541 | struct qedi_cmd *qedi_cmd; | |
1542 | struct qedi_cmd *cmd; | |
1543 | struct iscsi_task *ctask; | |
1544 | struct iscsi_tm *tmf_hdr; | |
1545 | struct iscsi_sge *req_sge; | |
1546 | struct iscsi_sge *resp_sge; | |
1547 | u32 lun[2]; | |
1548 | s16 tid = 0, ptu_invalidate = 0; | |
1549 | ||
1550 | req_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; | |
1551 | resp_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; | |
1552 | qedi_cmd = (struct qedi_cmd *)mtask->dd_data; | |
1553 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; | |
1554 | ||
1555 | tid = qedi_cmd->task_id; | |
1556 | qedi_update_itt_map(qedi, tid, mtask->itt, qedi_cmd); | |
1557 | ||
1558 | fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid); | |
1559 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); | |
1560 | ||
1561 | fw_tmf_request = &fw_task_ctx->ystorm_st_context.pdu_hdr.tmf_request; | |
1562 | fw_tmf_request->itt = qedi_set_itt(tid, get_itt(mtask->itt)); | |
1563 | fw_tmf_request->cmd_sn = be32_to_cpu(tmf_hdr->cmdsn); | |
1564 | ||
1565 | memcpy(lun, &tmf_hdr->lun, sizeof(struct scsi_lun)); | |
1566 | fw_tmf_request->lun.lo = be32_to_cpu(lun[0]); | |
1567 | fw_tmf_request->lun.hi = be32_to_cpu(lun[1]); | |
1568 | ||
1569 | if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) { | |
1570 | ptu_invalidate = 1; | |
1571 | qedi->tid_reuse_count[tid] = 0; | |
1572 | } | |
1573 | fw_task_ctx->ystorm_st_context.state.reuse_count = | |
1574 | qedi->tid_reuse_count[tid]; | |
1575 | fw_task_ctx->mstorm_st_context.reuse_count = | |
1576 | qedi->tid_reuse_count[tid]++; | |
1577 | ||
1578 | if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
1579 | ISCSI_TM_FUNC_ABORT_TASK) { | |
1580 | ctask = iscsi_itt_to_task(conn, tmf_hdr->rtt); | |
1581 | if (!ctask || !ctask->sc) { | |
1582 | QEDI_ERR(&qedi->dbg_ctx, | |
1583 | "Could not get reference task\n"); | |
1584 | return 0; | |
1585 | } | |
1586 | cmd = (struct qedi_cmd *)ctask->dd_data; | |
1587 | fw_tmf_request->rtt = | |
1588 | qedi_set_itt(cmd->task_id, | |
1589 | get_itt(tmf_hdr->rtt)); | |
1590 | } else { | |
1591 | fw_tmf_request->rtt = ISCSI_RESERVED_TAG; | |
1592 | } | |
1593 | ||
1594 | fw_tmf_request->opcode = tmf_hdr->opcode; | |
1595 | fw_tmf_request->function = tmf_hdr->flags; | |
1596 | fw_tmf_request->hdr_second_dword = ntoh24(tmf_hdr->dlength); | |
1597 | fw_tmf_request->ref_cmd_sn = be32_to_cpu(tmf_hdr->refcmdsn); | |
1598 | ||
1599 | single_sge = &fw_task_ctx->mstorm_st_context.sgl_union.single_sge; | |
1600 | fw_task_ctx->mstorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH; | |
1601 | fw_task_ctx->mstorm_ag_context.task_cid = (u16)qedi_conn->iscsi_conn_id; | |
1602 | single_sge->sge_addr.lo = resp_sge->sge_addr.lo; | |
1603 | single_sge->sge_addr.hi = resp_sge->sge_addr.hi; | |
1604 | single_sge->sge_len = resp_sge->sge_len; | |
1605 | ||
1606 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
1607 | ISCSI_MFLAGS_SINGLE_SGE, 1); | |
1608 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
1609 | ISCSI_MFLAGS_SLOW_IO, 0); | |
1610 | fw_task_ctx->mstorm_st_context.sgl_size = 1; | |
1611 | fw_task_ctx->mstorm_st_context.rem_task_size = resp_sge->sge_len; | |
1612 | ||
1613 | /* Ustorm context */ | |
1614 | fw_task_ctx->ustorm_st_context.rem_rcv_len = 0; | |
1615 | fw_task_ctx->ustorm_st_context.exp_data_transfer_len = 0; | |
1616 | fw_task_ctx->ustorm_st_context.exp_data_sn = 0; | |
1617 | fw_task_ctx->ustorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH; | |
1618 | fw_task_ctx->ustorm_st_context.cq_rss_number = 0; | |
1619 | ||
1620 | SET_FIELD(fw_task_ctx->ustorm_st_context.flags, | |
1621 | USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 0); | |
1622 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
1623 | ISCSI_REG1_NUM_FAST_SGES, 0); | |
1624 | ||
1625 | fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id; | |
1626 | SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1, | |
1627 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); | |
1628 | fw_task_ctx->ustorm_st_context.lun.lo = be32_to_cpu(lun[0]); | |
1629 | fw_task_ctx->ustorm_st_context.lun.hi = be32_to_cpu(lun[1]); | |
1630 | ||
1631 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
1632 | "Add TMF to SQ, tmf tid=0x%x, itt=0x%x, cid=0x%x\n", | |
1633 | tid, mtask->itt, qedi_conn->iscsi_conn_id); | |
1634 | ||
1635 | spin_lock(&qedi_conn->list_lock); | |
1636 | list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); | |
1637 | qedi_cmd->io_cmd_in_list = true; | |
1638 | qedi_conn->active_cmd_count++; | |
1639 | spin_unlock(&qedi_conn->list_lock); | |
1640 | ||
1641 | qedi_add_to_sq(qedi_conn, mtask, tid, ptu_invalidate, false); | |
1642 | qedi_ring_doorbell(qedi_conn); | |
1643 | return 0; | |
1644 | } | |
1645 | ||
1646 | int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn, | |
1647 | struct iscsi_task *mtask) | |
1648 | { | |
1649 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1650 | struct iscsi_tm *tmf_hdr; | |
1651 | struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data; | |
1652 | s16 tid = 0; | |
1653 | ||
1654 | tmf_hdr = (struct iscsi_tm *)mtask->hdr; | |
1655 | qedi_cmd->task = mtask; | |
1656 | ||
1657 | /* If abort task then schedule the work and return */ | |
1658 | if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
1659 | ISCSI_TM_FUNC_ABORT_TASK) { | |
1660 | qedi_cmd->state = CLEANUP_WAIT; | |
1661 | INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work); | |
1662 | queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work); | |
1663 | ||
1664 | } else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
1665 | ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) || | |
1666 | ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
1667 | ISCSI_TM_FUNC_TARGET_WARM_RESET) || | |
1668 | ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) == | |
1669 | ISCSI_TM_FUNC_TARGET_COLD_RESET)) { | |
1670 | tid = qedi_get_task_idx(qedi); | |
1671 | if (tid == -1) { | |
1672 | QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n", | |
1673 | qedi_conn->iscsi_conn_id); | |
1674 | return -1; | |
1675 | } | |
1676 | qedi_cmd->task_id = tid; | |
1677 | ||
1678 | qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task); | |
1679 | ||
1680 | } else { | |
1681 | QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n", | |
1682 | qedi_conn->iscsi_conn_id); | |
1683 | return -1; | |
1684 | } | |
1685 | ||
1686 | return 0; | |
1687 | } | |
1688 | ||
1689 | int qedi_send_iscsi_text(struct qedi_conn *qedi_conn, | |
1690 | struct iscsi_task *task) | |
1691 | { | |
1692 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1693 | struct iscsi_task_context *fw_task_ctx; | |
1694 | struct iscsi_text_request_hdr *fw_text_request; | |
1695 | struct iscsi_cached_sge_ctx *cached_sge; | |
1696 | struct iscsi_sge *single_sge; | |
1697 | struct qedi_cmd *qedi_cmd; | |
1698 | /* For 6.5 hdr iscsi_hdr */ | |
1699 | struct iscsi_text *text_hdr; | |
1700 | struct iscsi_sge *req_sge; | |
1701 | struct iscsi_sge *resp_sge; | |
1702 | s16 ptu_invalidate = 0; | |
1703 | s16 tid = 0; | |
1704 | ||
1705 | req_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; | |
1706 | resp_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; | |
1707 | qedi_cmd = (struct qedi_cmd *)task->dd_data; | |
1708 | text_hdr = (struct iscsi_text *)task->hdr; | |
1709 | ||
1710 | tid = qedi_get_task_idx(qedi); | |
1711 | if (tid == -1) | |
1712 | return -ENOMEM; | |
1713 | ||
1714 | fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid); | |
1715 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); | |
1716 | ||
1717 | qedi_cmd->task_id = tid; | |
1718 | ||
1719 | /* Ystorm context */ | |
1720 | fw_text_request = | |
1721 | &fw_task_ctx->ystorm_st_context.pdu_hdr.text_request; | |
1722 | fw_text_request->opcode = text_hdr->opcode; | |
1723 | fw_text_request->flags_attr = text_hdr->flags; | |
1724 | ||
1725 | qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); | |
1726 | fw_text_request->itt = qedi_set_itt(tid, get_itt(task->itt)); | |
1727 | fw_text_request->ttt = text_hdr->ttt; | |
1728 | fw_text_request->cmd_sn = be32_to_cpu(text_hdr->cmdsn); | |
1729 | fw_text_request->exp_stat_sn = be32_to_cpu(text_hdr->exp_statsn); | |
1730 | fw_text_request->hdr_second_dword = ntoh24(text_hdr->dlength); | |
1731 | ||
1732 | if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) { | |
1733 | ptu_invalidate = 1; | |
1734 | qedi->tid_reuse_count[tid] = 0; | |
1735 | } | |
1736 | fw_task_ctx->ystorm_st_context.state.reuse_count = | |
1737 | qedi->tid_reuse_count[tid]; | |
1738 | fw_task_ctx->mstorm_st_context.reuse_count = | |
1739 | qedi->tid_reuse_count[tid]++; | |
1740 | ||
1741 | cached_sge = | |
1742 | &fw_task_ctx->ystorm_st_context.state.sgl_ctx_union.cached_sge; | |
1743 | cached_sge->sge.sge_len = req_sge->sge_len; | |
1744 | cached_sge->sge.sge_addr.lo = (u32)(qedi_conn->gen_pdu.req_dma_addr); | |
1745 | cached_sge->sge.sge_addr.hi = | |
1746 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); | |
1747 | ||
1748 | /* Mstorm context */ | |
1749 | single_sge = &fw_task_ctx->mstorm_st_context.sgl_union.single_sge; | |
1750 | fw_task_ctx->mstorm_st_context.task_type = 0x2; | |
1751 | fw_task_ctx->mstorm_ag_context.task_cid = (u16)qedi_conn->iscsi_conn_id; | |
1752 | single_sge->sge_addr.lo = resp_sge->sge_addr.lo; | |
1753 | single_sge->sge_addr.hi = resp_sge->sge_addr.hi; | |
1754 | single_sge->sge_len = resp_sge->sge_len; | |
1755 | ||
1756 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
1757 | ISCSI_MFLAGS_SINGLE_SGE, 1); | |
1758 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
1759 | ISCSI_MFLAGS_SLOW_IO, 0); | |
1760 | fw_task_ctx->mstorm_st_context.sgl_size = 1; | |
1761 | fw_task_ctx->mstorm_st_context.rem_task_size = resp_sge->sge_len; | |
1762 | ||
1763 | /* Ustorm context */ | |
1764 | fw_task_ctx->ustorm_ag_context.exp_data_acked = | |
1765 | ntoh24(text_hdr->dlength); | |
1766 | fw_task_ctx->ustorm_st_context.rem_rcv_len = resp_sge->sge_len; | |
1767 | fw_task_ctx->ustorm_st_context.exp_data_transfer_len = | |
1768 | ntoh24(text_hdr->dlength); | |
1769 | fw_task_ctx->ustorm_st_context.exp_data_sn = | |
1770 | be32_to_cpu(text_hdr->exp_statsn); | |
1771 | fw_task_ctx->ustorm_st_context.cq_rss_number = 0; | |
1772 | fw_task_ctx->ustorm_st_context.task_type = 0x2; | |
1773 | fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id; | |
1774 | SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1, | |
1775 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); | |
1776 | ||
1777 | /* Add command in active command list */ | |
1778 | spin_lock(&qedi_conn->list_lock); | |
1779 | list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); | |
1780 | qedi_cmd->io_cmd_in_list = true; | |
1781 | qedi_conn->active_cmd_count++; | |
1782 | spin_unlock(&qedi_conn->list_lock); | |
1783 | ||
1784 | qedi_add_to_sq(qedi_conn, task, tid, ptu_invalidate, false); | |
1785 | qedi_ring_doorbell(qedi_conn); | |
1786 | ||
1787 | return 0; | |
1788 | } | |
1789 | ||
1790 | int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn, | |
1791 | struct iscsi_task *task, | |
1792 | char *datap, int data_len, int unsol) | |
1793 | { | |
1794 | struct qedi_ctx *qedi = qedi_conn->qedi; | |
1795 | struct iscsi_task_context *fw_task_ctx; | |
1796 | struct iscsi_nop_out_hdr *fw_nop_out; | |
1797 | struct qedi_cmd *qedi_cmd; | |
1798 | /* For 6.5 hdr iscsi_hdr */ | |
1799 | struct iscsi_nopout *nopout_hdr; | |
1800 | struct iscsi_cached_sge_ctx *cached_sge; | |
1801 | struct iscsi_sge *single_sge; | |
1802 | struct iscsi_sge *req_sge; | |
1803 | struct iscsi_sge *resp_sge; | |
1804 | u32 lun[2]; | |
1805 | s16 ptu_invalidate = 0; | |
1806 | s16 tid = 0; | |
1807 | ||
1808 | req_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; | |
1809 | resp_sge = (struct iscsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; | |
1810 | qedi_cmd = (struct qedi_cmd *)task->dd_data; | |
1811 | nopout_hdr = (struct iscsi_nopout *)task->hdr; | |
1812 | ||
1813 | tid = qedi_get_task_idx(qedi); | |
1814 | if (tid == -1) { | |
1815 | QEDI_WARN(&qedi->dbg_ctx, "Invalid tid\n"); | |
1816 | return -ENOMEM; | |
1817 | } | |
1818 | ||
1819 | fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid); | |
1820 | ||
1821 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); | |
1822 | qedi_cmd->task_id = tid; | |
1823 | ||
1824 | /* Ystorm context */ | |
1825 | fw_nop_out = &fw_task_ctx->ystorm_st_context.pdu_hdr.nop_out; | |
1826 | SET_FIELD(fw_nop_out->flags_attr, ISCSI_NOP_OUT_HDR_CONST1, 1); | |
1827 | SET_FIELD(fw_nop_out->flags_attr, ISCSI_NOP_OUT_HDR_RSRV, 0); | |
1828 | ||
1829 | memcpy(lun, &nopout_hdr->lun, sizeof(struct scsi_lun)); | |
1830 | fw_nop_out->lun.lo = be32_to_cpu(lun[0]); | |
1831 | fw_nop_out->lun.hi = be32_to_cpu(lun[1]); | |
1832 | ||
1833 | qedi_update_itt_map(qedi, tid, task->itt, qedi_cmd); | |
1834 | ||
1835 | if (nopout_hdr->ttt != ISCSI_TTT_ALL_ONES) { | |
1836 | fw_nop_out->itt = be32_to_cpu(nopout_hdr->itt); | |
1837 | fw_nop_out->ttt = be32_to_cpu(nopout_hdr->ttt); | |
1838 | fw_task_ctx->ystorm_st_context.state.buffer_offset[0] = 0; | |
1839 | fw_task_ctx->ystorm_st_context.state.local_comp = 1; | |
1840 | SET_FIELD(fw_task_ctx->ustorm_st_context.flags, | |
1841 | USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 1); | |
1842 | } else { | |
1843 | fw_nop_out->itt = qedi_set_itt(tid, get_itt(task->itt)); | |
1844 | fw_nop_out->ttt = ISCSI_TTT_ALL_ONES; | |
1845 | fw_task_ctx->ystorm_st_context.state.buffer_offset[0] = 0; | |
1846 | ||
1847 | spin_lock(&qedi_conn->list_lock); | |
1848 | list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list); | |
1849 | qedi_cmd->io_cmd_in_list = true; | |
1850 | qedi_conn->active_cmd_count++; | |
1851 | spin_unlock(&qedi_conn->list_lock); | |
1852 | } | |
1853 | ||
1854 | fw_nop_out->opcode = ISCSI_OPCODE_NOP_OUT; | |
1855 | fw_nop_out->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); | |
1856 | fw_nop_out->exp_stat_sn = be32_to_cpu(nopout_hdr->exp_statsn); | |
1857 | ||
1858 | cached_sge = | |
1859 | &fw_task_ctx->ystorm_st_context.state.sgl_ctx_union.cached_sge; | |
1860 | cached_sge->sge.sge_len = req_sge->sge_len; | |
1861 | cached_sge->sge.sge_addr.lo = (u32)(qedi_conn->gen_pdu.req_dma_addr); | |
1862 | cached_sge->sge.sge_addr.hi = | |
1863 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); | |
1864 | ||
1865 | /* Mstorm context */ | |
1866 | fw_task_ctx->mstorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH; | |
1867 | fw_task_ctx->mstorm_ag_context.task_cid = (u16)qedi_conn->iscsi_conn_id; | |
1868 | ||
1869 | single_sge = &fw_task_ctx->mstorm_st_context.sgl_union.single_sge; | |
1870 | single_sge->sge_addr.lo = resp_sge->sge_addr.lo; | |
1871 | single_sge->sge_addr.hi = resp_sge->sge_addr.hi; | |
1872 | single_sge->sge_len = resp_sge->sge_len; | |
1873 | fw_task_ctx->mstorm_st_context.rem_task_size = resp_sge->sge_len; | |
1874 | ||
1875 | if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) { | |
1876 | ptu_invalidate = 1; | |
1877 | qedi->tid_reuse_count[tid] = 0; | |
1878 | } | |
1879 | fw_task_ctx->ystorm_st_context.state.reuse_count = | |
1880 | qedi->tid_reuse_count[tid]; | |
1881 | fw_task_ctx->mstorm_st_context.reuse_count = | |
1882 | qedi->tid_reuse_count[tid]++; | |
1883 | /* Ustorm context */ | |
1884 | fw_task_ctx->ustorm_st_context.rem_rcv_len = resp_sge->sge_len; | |
1885 | fw_task_ctx->ustorm_st_context.exp_data_transfer_len = data_len; | |
1886 | fw_task_ctx->ustorm_st_context.exp_data_sn = 0; | |
1887 | fw_task_ctx->ustorm_st_context.task_type = ISCSI_TASK_TYPE_MIDPATH; | |
1888 | fw_task_ctx->ustorm_st_context.cq_rss_number = 0; | |
1889 | ||
1890 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
1891 | ISCSI_REG1_NUM_FAST_SGES, 0); | |
1892 | ||
1893 | fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id; | |
1894 | SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1, | |
1895 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); | |
1896 | ||
1897 | fw_task_ctx->ustorm_st_context.lun.lo = be32_to_cpu(lun[0]); | |
1898 | fw_task_ctx->ustorm_st_context.lun.hi = be32_to_cpu(lun[1]); | |
1899 | ||
1900 | qedi_add_to_sq(qedi_conn, task, tid, ptu_invalidate, false); | |
1901 | qedi_ring_doorbell(qedi_conn); | |
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | static int qedi_split_bd(struct qedi_cmd *cmd, u64 addr, int sg_len, | |
1906 | int bd_index) | |
1907 | { | |
1908 | struct iscsi_sge *bd = cmd->io_tbl.sge_tbl; | |
1909 | int frag_size, sg_frags; | |
1910 | ||
1911 | sg_frags = 0; | |
1912 | ||
1913 | while (sg_len) { | |
1914 | if (addr % QEDI_PAGE_SIZE) | |
1915 | frag_size = | |
1916 | (QEDI_PAGE_SIZE - (addr % QEDI_PAGE_SIZE)); | |
1917 | else | |
1918 | frag_size = (sg_len > QEDI_BD_SPLIT_SZ) ? 0 : | |
1919 | (sg_len % QEDI_BD_SPLIT_SZ); | |
1920 | ||
1921 | if (frag_size == 0) | |
1922 | frag_size = QEDI_BD_SPLIT_SZ; | |
1923 | ||
1924 | bd[bd_index + sg_frags].sge_addr.lo = (addr & 0xffffffff); | |
1925 | bd[bd_index + sg_frags].sge_addr.hi = (addr >> 32); | |
1926 | bd[bd_index + sg_frags].sge_len = (u16)frag_size; | |
1927 | QEDI_INFO(&cmd->conn->qedi->dbg_ctx, QEDI_LOG_IO, | |
1928 | "split sge %d: addr=%llx, len=%x", | |
1929 | (bd_index + sg_frags), addr, frag_size); | |
1930 | ||
1931 | addr += (u64)frag_size; | |
1932 | sg_frags++; | |
1933 | sg_len -= frag_size; | |
1934 | } | |
1935 | return sg_frags; | |
1936 | } | |
1937 | ||
1938 | static int qedi_map_scsi_sg(struct qedi_ctx *qedi, struct qedi_cmd *cmd) | |
1939 | { | |
1940 | struct scsi_cmnd *sc = cmd->scsi_cmd; | |
1941 | struct iscsi_sge *bd = cmd->io_tbl.sge_tbl; | |
1942 | struct scatterlist *sg; | |
1943 | int byte_count = 0; | |
1944 | int bd_count = 0; | |
1945 | int sg_count; | |
1946 | int sg_len; | |
1947 | int sg_frags; | |
1948 | u64 addr, end_addr; | |
1949 | int i; | |
1950 | ||
1951 | WARN_ON(scsi_sg_count(sc) > QEDI_ISCSI_MAX_BDS_PER_CMD); | |
1952 | ||
1953 | sg_count = dma_map_sg(&qedi->pdev->dev, scsi_sglist(sc), | |
1954 | scsi_sg_count(sc), sc->sc_data_direction); | |
1955 | ||
1956 | /* | |
1957 | * New condition to send single SGE as cached-SGL. | |
1958 | * Single SGE with length less than 64K. | |
1959 | */ | |
1960 | sg = scsi_sglist(sc); | |
1961 | if ((sg_count == 1) && (sg_dma_len(sg) <= MAX_SGLEN_FOR_CACHESGL)) { | |
1962 | sg_len = sg_dma_len(sg); | |
1963 | addr = (u64)sg_dma_address(sg); | |
1964 | ||
1965 | bd[bd_count].sge_addr.lo = (addr & 0xffffffff); | |
1966 | bd[bd_count].sge_addr.hi = (addr >> 32); | |
1967 | bd[bd_count].sge_len = (u16)sg_len; | |
1968 | ||
1969 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, | |
1970 | "single-cashed-sgl: bd_count:%d addr=%llx, len=%x", | |
1971 | sg_count, addr, sg_len); | |
1972 | ||
1973 | return ++bd_count; | |
1974 | } | |
1975 | ||
1976 | scsi_for_each_sg(sc, sg, sg_count, i) { | |
1977 | sg_len = sg_dma_len(sg); | |
1978 | addr = (u64)sg_dma_address(sg); | |
1979 | end_addr = (addr + sg_len); | |
1980 | ||
1981 | /* | |
1982 | * first sg elem in the 'list', | |
1983 | * check if end addr is page-aligned. | |
1984 | */ | |
1985 | if ((i == 0) && (sg_count > 1) && (end_addr % QEDI_PAGE_SIZE)) | |
1986 | cmd->use_slowpath = true; | |
1987 | ||
1988 | /* | |
1989 | * last sg elem in the 'list', | |
1990 | * check if start addr is page-aligned. | |
1991 | */ | |
1992 | else if ((i == (sg_count - 1)) && | |
1993 | (sg_count > 1) && (addr % QEDI_PAGE_SIZE)) | |
1994 | cmd->use_slowpath = true; | |
1995 | ||
1996 | /* | |
1997 | * middle sg elements in list, | |
1998 | * check if start and end addr is page-aligned | |
1999 | */ | |
2000 | else if ((i != 0) && (i != (sg_count - 1)) && | |
2001 | ((addr % QEDI_PAGE_SIZE) || | |
2002 | (end_addr % QEDI_PAGE_SIZE))) | |
2003 | cmd->use_slowpath = true; | |
2004 | ||
2005 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "sg[%d] size=0x%x", | |
2006 | i, sg_len); | |
2007 | ||
2008 | if (sg_len > QEDI_BD_SPLIT_SZ) { | |
2009 | sg_frags = qedi_split_bd(cmd, addr, sg_len, bd_count); | |
2010 | } else { | |
2011 | sg_frags = 1; | |
2012 | bd[bd_count].sge_addr.lo = addr & 0xffffffff; | |
2013 | bd[bd_count].sge_addr.hi = addr >> 32; | |
2014 | bd[bd_count].sge_len = sg_len; | |
2015 | } | |
2016 | byte_count += sg_len; | |
2017 | bd_count += sg_frags; | |
2018 | } | |
2019 | ||
2020 | if (byte_count != scsi_bufflen(sc)) | |
2021 | QEDI_ERR(&qedi->dbg_ctx, | |
2022 | "byte_count = %d != scsi_bufflen = %d\n", byte_count, | |
2023 | scsi_bufflen(sc)); | |
2024 | else | |
2025 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "byte_count = %d\n", | |
2026 | byte_count); | |
2027 | ||
2028 | WARN_ON(byte_count != scsi_bufflen(sc)); | |
2029 | ||
2030 | return bd_count; | |
2031 | } | |
2032 | ||
2033 | static void qedi_iscsi_map_sg_list(struct qedi_cmd *cmd) | |
2034 | { | |
2035 | int bd_count; | |
2036 | struct scsi_cmnd *sc = cmd->scsi_cmd; | |
2037 | ||
2038 | if (scsi_sg_count(sc)) { | |
2039 | bd_count = qedi_map_scsi_sg(cmd->conn->qedi, cmd); | |
2040 | if (bd_count == 0) | |
2041 | return; | |
2042 | } else { | |
2043 | struct iscsi_sge *bd = cmd->io_tbl.sge_tbl; | |
2044 | ||
2045 | bd[0].sge_addr.lo = 0; | |
2046 | bd[0].sge_addr.hi = 0; | |
2047 | bd[0].sge_len = 0; | |
2048 | bd_count = 0; | |
2049 | } | |
2050 | cmd->io_tbl.sge_valid = bd_count; | |
2051 | } | |
2052 | ||
2053 | static void qedi_cpy_scsi_cdb(struct scsi_cmnd *sc, u32 *dstp) | |
2054 | { | |
2055 | u32 dword; | |
2056 | int lpcnt; | |
2057 | u8 *srcp; | |
2058 | ||
2059 | lpcnt = sc->cmd_len / sizeof(dword); | |
2060 | srcp = (u8 *)sc->cmnd; | |
2061 | while (lpcnt--) { | |
2062 | memcpy(&dword, (const void *)srcp, 4); | |
2063 | *dstp = cpu_to_be32(dword); | |
2064 | srcp += 4; | |
2065 | dstp++; | |
2066 | } | |
2067 | if (sc->cmd_len & 0x3) { | |
2068 | dword = (u32)srcp[0] | ((u32)srcp[1] << 8); | |
2069 | *dstp = cpu_to_be32(dword); | |
2070 | } | |
2071 | } | |
2072 | ||
2073 | void qedi_trace_io(struct qedi_ctx *qedi, struct iscsi_task *task, | |
2074 | u16 tid, int8_t direction) | |
2075 | { | |
2076 | struct qedi_io_log *io_log; | |
2077 | struct iscsi_conn *conn = task->conn; | |
2078 | struct qedi_conn *qedi_conn = conn->dd_data; | |
2079 | struct scsi_cmnd *sc_cmd = task->sc; | |
2080 | unsigned long flags; | |
2081 | u8 op; | |
2082 | ||
2083 | spin_lock_irqsave(&qedi->io_trace_lock, flags); | |
2084 | ||
2085 | io_log = &qedi->io_trace_buf[qedi->io_trace_idx]; | |
2086 | io_log->direction = direction; | |
2087 | io_log->task_id = tid; | |
2088 | io_log->cid = qedi_conn->iscsi_conn_id; | |
2089 | io_log->lun = sc_cmd->device->lun; | |
2090 | io_log->op = sc_cmd->cmnd[0]; | |
2091 | op = sc_cmd->cmnd[0]; | |
2092 | io_log->lba[0] = sc_cmd->cmnd[2]; | |
2093 | io_log->lba[1] = sc_cmd->cmnd[3]; | |
2094 | io_log->lba[2] = sc_cmd->cmnd[4]; | |
2095 | io_log->lba[3] = sc_cmd->cmnd[5]; | |
2096 | io_log->bufflen = scsi_bufflen(sc_cmd); | |
2097 | io_log->sg_count = scsi_sg_count(sc_cmd); | |
2098 | io_log->fast_sgs = qedi->fast_sgls; | |
2099 | io_log->cached_sgs = qedi->cached_sgls; | |
2100 | io_log->slow_sgs = qedi->slow_sgls; | |
2101 | io_log->cached_sge = qedi->use_cached_sge; | |
2102 | io_log->slow_sge = qedi->use_slow_sge; | |
2103 | io_log->fast_sge = qedi->use_fast_sge; | |
2104 | io_log->result = sc_cmd->result; | |
2105 | io_log->jiffies = jiffies; | |
2106 | io_log->blk_req_cpu = smp_processor_id(); | |
2107 | ||
2108 | if (direction == QEDI_IO_TRACE_REQ) { | |
2109 | /* For requests we only care about the submission CPU */ | |
2110 | io_log->req_cpu = smp_processor_id() % qedi->num_queues; | |
2111 | io_log->intr_cpu = 0; | |
2112 | io_log->blk_rsp_cpu = 0; | |
2113 | } else if (direction == QEDI_IO_TRACE_RSP) { | |
2114 | io_log->req_cpu = smp_processor_id() % qedi->num_queues; | |
2115 | io_log->intr_cpu = qedi->intr_cpu; | |
2116 | io_log->blk_rsp_cpu = smp_processor_id(); | |
2117 | } | |
2118 | ||
2119 | qedi->io_trace_idx++; | |
2120 | if (qedi->io_trace_idx == QEDI_IO_TRACE_SIZE) | |
2121 | qedi->io_trace_idx = 0; | |
2122 | ||
2123 | qedi->use_cached_sge = false; | |
2124 | qedi->use_slow_sge = false; | |
2125 | qedi->use_fast_sge = false; | |
2126 | ||
2127 | spin_unlock_irqrestore(&qedi->io_trace_lock, flags); | |
2128 | } | |
2129 | ||
2130 | int qedi_iscsi_send_ioreq(struct iscsi_task *task) | |
2131 | { | |
2132 | struct iscsi_conn *conn = task->conn; | |
2133 | struct iscsi_session *session = conn->session; | |
2134 | struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); | |
2135 | struct qedi_ctx *qedi = iscsi_host_priv(shost); | |
2136 | struct qedi_conn *qedi_conn = conn->dd_data; | |
2137 | struct qedi_cmd *cmd = task->dd_data; | |
2138 | struct scsi_cmnd *sc = task->sc; | |
2139 | struct iscsi_task_context *fw_task_ctx; | |
2140 | struct iscsi_cached_sge_ctx *cached_sge; | |
2141 | struct iscsi_phys_sgl_ctx *phys_sgl; | |
2142 | struct iscsi_virt_sgl_ctx *virt_sgl; | |
2143 | struct ystorm_iscsi_task_st_ctx *yst_cxt; | |
2144 | struct mstorm_iscsi_task_st_ctx *mst_cxt; | |
2145 | struct iscsi_sgl *sgl_struct; | |
2146 | struct iscsi_sge *single_sge; | |
2147 | struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr; | |
2148 | struct iscsi_sge *bd = cmd->io_tbl.sge_tbl; | |
2149 | enum iscsi_task_type task_type; | |
2150 | struct iscsi_cmd_hdr *fw_cmd; | |
2151 | u32 lun[2]; | |
2152 | u32 exp_data; | |
2153 | u16 cq_idx = smp_processor_id() % qedi->num_queues; | |
2154 | s16 ptu_invalidate = 0; | |
2155 | s16 tid = 0; | |
2156 | u8 num_fast_sgs; | |
2157 | ||
2158 | tid = qedi_get_task_idx(qedi); | |
2159 | if (tid == -1) | |
2160 | return -ENOMEM; | |
2161 | ||
2162 | qedi_iscsi_map_sg_list(cmd); | |
2163 | ||
2164 | int_to_scsilun(sc->device->lun, (struct scsi_lun *)lun); | |
2165 | fw_task_ctx = qedi_get_task_mem(&qedi->tasks, tid); | |
2166 | ||
2167 | memset(fw_task_ctx, 0, sizeof(struct iscsi_task_context)); | |
2168 | cmd->task_id = tid; | |
2169 | ||
2170 | /* Ystorm context */ | |
2171 | fw_cmd = &fw_task_ctx->ystorm_st_context.pdu_hdr.cmd; | |
2172 | SET_FIELD(fw_cmd->flags_attr, ISCSI_CMD_HDR_ATTR, ISCSI_ATTR_SIMPLE); | |
2173 | ||
2174 | if (sc->sc_data_direction == DMA_TO_DEVICE) { | |
2175 | if (conn->session->initial_r2t_en) { | |
2176 | exp_data = min((conn->session->imm_data_en * | |
2177 | conn->max_xmit_dlength), | |
2178 | conn->session->first_burst); | |
2179 | exp_data = min(exp_data, scsi_bufflen(sc)); | |
2180 | fw_task_ctx->ustorm_ag_context.exp_data_acked = | |
2181 | cpu_to_le32(exp_data); | |
2182 | } else { | |
2183 | fw_task_ctx->ustorm_ag_context.exp_data_acked = | |
2184 | min(conn->session->first_burst, scsi_bufflen(sc)); | |
2185 | } | |
2186 | ||
2187 | SET_FIELD(fw_cmd->flags_attr, ISCSI_CMD_HDR_WRITE, 1); | |
2188 | task_type = ISCSI_TASK_TYPE_INITIATOR_WRITE; | |
2189 | } else { | |
2190 | if (scsi_bufflen(sc)) | |
2191 | SET_FIELD(fw_cmd->flags_attr, ISCSI_CMD_HDR_READ, 1); | |
2192 | task_type = ISCSI_TASK_TYPE_INITIATOR_READ; | |
2193 | } | |
2194 | ||
2195 | fw_cmd->lun.lo = be32_to_cpu(lun[0]); | |
2196 | fw_cmd->lun.hi = be32_to_cpu(lun[1]); | |
2197 | ||
2198 | qedi_update_itt_map(qedi, tid, task->itt, cmd); | |
2199 | fw_cmd->itt = qedi_set_itt(tid, get_itt(task->itt)); | |
2200 | fw_cmd->expected_transfer_length = scsi_bufflen(sc); | |
2201 | fw_cmd->cmd_sn = be32_to_cpu(hdr->cmdsn); | |
2202 | fw_cmd->opcode = hdr->opcode; | |
2203 | qedi_cpy_scsi_cdb(sc, (u32 *)fw_cmd->cdb); | |
2204 | ||
2205 | /* Mstorm context */ | |
2206 | fw_task_ctx->mstorm_st_context.sense_db.lo = (u32)cmd->sense_buffer_dma; | |
2207 | fw_task_ctx->mstorm_st_context.sense_db.hi = | |
2208 | (u32)((u64)cmd->sense_buffer_dma >> 32); | |
2209 | fw_task_ctx->mstorm_ag_context.task_cid = qedi_conn->iscsi_conn_id; | |
2210 | fw_task_ctx->mstorm_st_context.task_type = task_type; | |
2211 | ||
2212 | if (qedi->tid_reuse_count[tid] == QEDI_MAX_TASK_NUM) { | |
2213 | ptu_invalidate = 1; | |
2214 | qedi->tid_reuse_count[tid] = 0; | |
2215 | } | |
2216 | fw_task_ctx->ystorm_st_context.state.reuse_count = | |
2217 | qedi->tid_reuse_count[tid]; | |
2218 | fw_task_ctx->mstorm_st_context.reuse_count = | |
2219 | qedi->tid_reuse_count[tid]++; | |
2220 | ||
2221 | /* Ustorm context */ | |
2222 | fw_task_ctx->ustorm_st_context.rem_rcv_len = scsi_bufflen(sc); | |
2223 | fw_task_ctx->ustorm_st_context.exp_data_transfer_len = scsi_bufflen(sc); | |
2224 | fw_task_ctx->ustorm_st_context.exp_data_sn = | |
2225 | be32_to_cpu(hdr->exp_statsn); | |
2226 | fw_task_ctx->ustorm_st_context.task_type = task_type; | |
2227 | fw_task_ctx->ustorm_st_context.cq_rss_number = cq_idx; | |
2228 | fw_task_ctx->ustorm_ag_context.icid = (u16)qedi_conn->iscsi_conn_id; | |
2229 | ||
2230 | SET_FIELD(fw_task_ctx->ustorm_ag_context.flags1, | |
2231 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); | |
2232 | SET_FIELD(fw_task_ctx->ustorm_st_context.flags, | |
2233 | USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 0); | |
2234 | ||
2235 | num_fast_sgs = (cmd->io_tbl.sge_valid ? | |
2236 | min((u16)QEDI_FAST_SGE_COUNT, | |
2237 | (u16)cmd->io_tbl.sge_valid) : 0); | |
2238 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
2239 | ISCSI_REG1_NUM_FAST_SGES, num_fast_sgs); | |
2240 | ||
2241 | fw_task_ctx->ustorm_st_context.lun.lo = be32_to_cpu(lun[0]); | |
2242 | fw_task_ctx->ustorm_st_context.lun.hi = be32_to_cpu(lun[1]); | |
2243 | ||
2244 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, "Total sge count [%d]\n", | |
2245 | cmd->io_tbl.sge_valid); | |
2246 | ||
2247 | yst_cxt = &fw_task_ctx->ystorm_st_context; | |
2248 | mst_cxt = &fw_task_ctx->mstorm_st_context; | |
2249 | /* Tx path */ | |
2250 | if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { | |
2251 | /* not considering superIO or FastIO */ | |
2252 | if (cmd->io_tbl.sge_valid == 1) { | |
2253 | cached_sge = &yst_cxt->state.sgl_ctx_union.cached_sge; | |
2254 | cached_sge->sge.sge_addr.lo = bd[0].sge_addr.lo; | |
2255 | cached_sge->sge.sge_addr.hi = bd[0].sge_addr.hi; | |
2256 | cached_sge->sge.sge_len = bd[0].sge_len; | |
2257 | qedi->cached_sgls++; | |
2258 | } else if ((cmd->io_tbl.sge_valid != 1) && cmd->use_slowpath) { | |
2259 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
2260 | ISCSI_MFLAGS_SLOW_IO, 1); | |
2261 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
2262 | ISCSI_REG1_NUM_FAST_SGES, 0); | |
2263 | phys_sgl = &yst_cxt->state.sgl_ctx_union.phys_sgl; | |
2264 | phys_sgl->sgl_base.lo = (u32)(cmd->io_tbl.sge_tbl_dma); | |
2265 | phys_sgl->sgl_base.hi = | |
2266 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); | |
2267 | phys_sgl->sgl_size = cmd->io_tbl.sge_valid; | |
2268 | qedi->slow_sgls++; | |
2269 | } else if ((cmd->io_tbl.sge_valid != 1) && !cmd->use_slowpath) { | |
2270 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
2271 | ISCSI_MFLAGS_SLOW_IO, 0); | |
2272 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
2273 | ISCSI_REG1_NUM_FAST_SGES, | |
2274 | min((u16)QEDI_FAST_SGE_COUNT, | |
2275 | (u16)cmd->io_tbl.sge_valid)); | |
2276 | virt_sgl = &yst_cxt->state.sgl_ctx_union.virt_sgl; | |
2277 | virt_sgl->sgl_base.lo = (u32)(cmd->io_tbl.sge_tbl_dma); | |
2278 | virt_sgl->sgl_base.hi = | |
2279 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); | |
2280 | virt_sgl->sgl_initial_offset = | |
2281 | (u32)bd[0].sge_addr.lo & (QEDI_PAGE_SIZE - 1); | |
2282 | qedi->fast_sgls++; | |
2283 | } | |
2284 | fw_task_ctx->mstorm_st_context.sgl_size = cmd->io_tbl.sge_valid; | |
2285 | fw_task_ctx->mstorm_st_context.rem_task_size = scsi_bufflen(sc); | |
2286 | } else { | |
2287 | /* Rx path */ | |
2288 | if (cmd->io_tbl.sge_valid == 1) { | |
2289 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
2290 | ISCSI_MFLAGS_SLOW_IO, 0); | |
2291 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
2292 | ISCSI_MFLAGS_SINGLE_SGE, 1); | |
2293 | single_sge = &mst_cxt->sgl_union.single_sge; | |
2294 | single_sge->sge_addr.lo = bd[0].sge_addr.lo; | |
2295 | single_sge->sge_addr.hi = bd[0].sge_addr.hi; | |
2296 | single_sge->sge_len = bd[0].sge_len; | |
2297 | qedi->cached_sgls++; | |
2298 | } else if ((cmd->io_tbl.sge_valid != 1) && cmd->use_slowpath) { | |
2299 | sgl_struct = &mst_cxt->sgl_union.sgl_struct; | |
2300 | sgl_struct->sgl_addr.lo = | |
2301 | (u32)(cmd->io_tbl.sge_tbl_dma); | |
2302 | sgl_struct->sgl_addr.hi = | |
2303 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); | |
2304 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
2305 | ISCSI_MFLAGS_SLOW_IO, 1); | |
2306 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
2307 | ISCSI_REG1_NUM_FAST_SGES, 0); | |
2308 | sgl_struct->updated_sge_size = 0; | |
2309 | sgl_struct->updated_sge_offset = 0; | |
2310 | qedi->slow_sgls++; | |
2311 | } else if ((cmd->io_tbl.sge_valid != 1) && !cmd->use_slowpath) { | |
2312 | sgl_struct = &mst_cxt->sgl_union.sgl_struct; | |
2313 | sgl_struct->sgl_addr.lo = | |
2314 | (u32)(cmd->io_tbl.sge_tbl_dma); | |
2315 | sgl_struct->sgl_addr.hi = | |
2316 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32); | |
2317 | sgl_struct->byte_offset = | |
2318 | (u32)bd[0].sge_addr.lo & (QEDI_PAGE_SIZE - 1); | |
2319 | SET_FIELD(fw_task_ctx->mstorm_st_context.flags.mflags, | |
2320 | ISCSI_MFLAGS_SLOW_IO, 0); | |
2321 | SET_FIELD(fw_task_ctx->ustorm_st_context.reg1.reg1_map, | |
2322 | ISCSI_REG1_NUM_FAST_SGES, 0); | |
2323 | sgl_struct->updated_sge_size = 0; | |
2324 | sgl_struct->updated_sge_offset = 0; | |
2325 | qedi->fast_sgls++; | |
2326 | } | |
2327 | fw_task_ctx->mstorm_st_context.sgl_size = cmd->io_tbl.sge_valid; | |
2328 | fw_task_ctx->mstorm_st_context.rem_task_size = scsi_bufflen(sc); | |
2329 | } | |
2330 | ||
2331 | if (cmd->io_tbl.sge_valid == 1) | |
2332 | /* Singel-SGL */ | |
2333 | qedi->use_cached_sge = true; | |
2334 | else { | |
2335 | if (cmd->use_slowpath) | |
2336 | qedi->use_slow_sge = true; | |
2337 | else | |
2338 | qedi->use_fast_sge = true; | |
2339 | } | |
2340 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, | |
2341 | "%s: %s-SGL: num_sges=0x%x first-sge-lo=0x%x first-sge-hi=0x%x", | |
2342 | (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) ? | |
2343 | "Write " : "Read ", (cmd->io_tbl.sge_valid == 1) ? | |
2344 | "Single" : (cmd->use_slowpath ? "SLOW" : "FAST"), | |
2345 | (u16)cmd->io_tbl.sge_valid, (u32)(cmd->io_tbl.sge_tbl_dma), | |
2346 | (u32)((u64)cmd->io_tbl.sge_tbl_dma >> 32)); | |
2347 | ||
2348 | /* Add command in active command list */ | |
2349 | spin_lock(&qedi_conn->list_lock); | |
2350 | list_add_tail(&cmd->io_cmd, &qedi_conn->active_cmd_list); | |
2351 | cmd->io_cmd_in_list = true; | |
2352 | qedi_conn->active_cmd_count++; | |
2353 | spin_unlock(&qedi_conn->list_lock); | |
2354 | ||
2355 | qedi_add_to_sq(qedi_conn, task, tid, ptu_invalidate, false); | |
2356 | qedi_ring_doorbell(qedi_conn); | |
2357 | if (qedi_io_tracing) | |
2358 | qedi_trace_io(qedi, task, tid, QEDI_IO_TRACE_REQ); | |
2359 | ||
2360 | return 0; | |
2361 | } | |
2362 | ||
2363 | int qedi_iscsi_cleanup_task(struct iscsi_task *task, bool mark_cmd_node_deleted) | |
2364 | { | |
2365 | struct iscsi_conn *conn = task->conn; | |
2366 | struct qedi_conn *qedi_conn = conn->dd_data; | |
2367 | struct qedi_cmd *cmd = task->dd_data; | |
2368 | s16 ptu_invalidate = 0; | |
2369 | ||
2370 | QEDI_INFO(&qedi_conn->qedi->dbg_ctx, QEDI_LOG_SCSI_TM, | |
2371 | "issue cleanup tid=0x%x itt=0x%x task_state=%d cmd_state=0%x cid=0x%x\n", | |
2372 | cmd->task_id, get_itt(task->itt), task->state, | |
2373 | cmd->state, qedi_conn->iscsi_conn_id); | |
2374 | ||
2375 | qedi_add_to_sq(qedi_conn, task, cmd->task_id, ptu_invalidate, true); | |
2376 | qedi_ring_doorbell(qedi_conn); | |
2377 | ||
2378 | return 0; | |
2379 | } |