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watchdog/core: Rename some softlockup_* functions
[linux/fpc-iii.git] / drivers / scsi / qedi / qedi_fw_api.c
blob7df32a68bd5437a3be108ef187480e609eb98a40
1 /* QLogic iSCSI Offload Driver
2 * Copyright (c) 2016 Cavium Inc.
3 *
4 * This software is available under the terms of the GNU General Public License
5 * (GPL) Version 2, available from the file COPYING in the main directory of
6 * this source tree.
7 */
8
9 #include <linux/types.h>
10 #include <asm/byteorder.h>
11 #include "qedi_hsi.h"
12 #include <linux/qed/qed_if.h>
13
14 #include "qedi_fw_iscsi.h"
15 #include "qedi_fw_scsi.h"
16
17 #define SCSI_NUM_SGES_IN_CACHE 0x4
18
19 static bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge)
20 {
21 return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge);
22 }
23
24 static
25 void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params,
26 struct scsi_cached_sges *ctx_data_desc,
27 struct scsi_sgl_task_params *sgl_task_params)
28 {
29 u8 sge_index;
30 u8 num_sges;
31 u32 val;
32
33 num_sges = (sgl_task_params->num_sges > SCSI_NUM_SGES_IN_CACHE) ?
34 SCSI_NUM_SGES_IN_CACHE : sgl_task_params->num_sges;
35
36 /* sgl params */
37 val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo);
38 ctx_sgl_params->sgl_addr.lo = val;
39 val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi);
40 ctx_sgl_params->sgl_addr.hi = val;
41 val = cpu_to_le32(sgl_task_params->total_buffer_size);
42 ctx_sgl_params->sgl_total_length = val;
43 ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges);
44
45 for (sge_index = 0; sge_index < num_sges; sge_index++) {
46 val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo);
47 ctx_data_desc->sge[sge_index].sge_addr.lo = val;
48 val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi);
49 ctx_data_desc->sge[sge_index].sge_addr.hi = val;
50 val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len);
51 ctx_data_desc->sge[sge_index].sge_len = val;
52 }
53 }
54
55 static u32 calc_rw_task_size(struct iscsi_task_params *task_params,
56 enum iscsi_task_type task_type,
57 struct scsi_sgl_task_params *sgl_task_params,
58 struct scsi_dif_task_params *dif_task_params)
59 {
60 u32 io_size;
61
62 if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE ||
63 task_type == ISCSI_TASK_TYPE_TARGET_READ)
64 io_size = task_params->tx_io_size;
65 else
66 io_size = task_params->rx_io_size;
67
68 if (!io_size)
69 return 0;
70
71 if (!dif_task_params)
72 return io_size;
73
74 return !dif_task_params->dif_on_network ?
75 io_size : sgl_task_params->total_buffer_size;
76 }
77
78 static void
79 init_dif_context_flags(struct iscsi_dif_flags *ctx_dif_flags,
80 struct scsi_dif_task_params *dif_task_params)
81 {
82 if (!dif_task_params)
83 return;
84
85 SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG,
86 dif_task_params->dif_block_size_log);
87 SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_DIF_TO_PEER,
88 dif_task_params->dif_on_network ? 1 : 0);
89 SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_HOST_INTERFACE,
90 dif_task_params->dif_on_host ? 1 : 0);
91 }
92
93 static void init_sqe(struct iscsi_task_params *task_params,
94 struct scsi_sgl_task_params *sgl_task_params,
95 struct scsi_dif_task_params *dif_task_params,
96 struct iscsi_common_hdr *pdu_header,
97 struct scsi_initiator_cmd_params *cmd_params,
98 enum iscsi_task_type task_type,
99 bool is_cleanup)
100 {
101 if (!task_params->sqe)
102 return;
103
104 memset(task_params->sqe, 0, sizeof(*task_params->sqe));
105 task_params->sqe->task_id = cpu_to_le16(task_params->itid);
106 if (is_cleanup) {
107 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
108 ISCSI_WQE_TYPE_TASK_CLEANUP);
109 return;
110 }
111
112 switch (task_type) {
113 case ISCSI_TASK_TYPE_INITIATOR_WRITE:
114 {
115 u32 buf_size = 0;
116 u32 num_sges = 0;
117
118 init_dif_context_flags(&task_params->sqe->prot_flags,
119 dif_task_params);
120
121 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
122 ISCSI_WQE_TYPE_NORMAL);
123
124 if (task_params->tx_io_size) {
125 buf_size = calc_rw_task_size(task_params, task_type,
126 sgl_task_params,
127 dif_task_params);
128
129 if (scsi_is_slow_sgl(sgl_task_params->num_sges,
130 sgl_task_params->small_mid_sge))
131 num_sges = ISCSI_WQE_NUM_SGES_SLOWIO;
132 else
133 num_sges = min(sgl_task_params->num_sges,
134 (u16)SCSI_NUM_SGES_SLOW_SGL_THR);
135 }
136
137 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, num_sges);
138 SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CONT_LEN,
139 buf_size);
140
141 if (GET_FIELD(pdu_header->hdr_second_dword,
142 ISCSI_CMD_HDR_TOTAL_AHS_LEN))
143 SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CDB_SIZE,
144 cmd_params->extended_cdb_sge.sge_len);
145 }
146 break;
147 case ISCSI_TASK_TYPE_INITIATOR_READ:
148 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
149 ISCSI_WQE_TYPE_NORMAL);
150
151 if (GET_FIELD(pdu_header->hdr_second_dword,
152 ISCSI_CMD_HDR_TOTAL_AHS_LEN))
153 SET_FIELD(task_params->sqe->contlen_cdbsize,
154 ISCSI_WQE_CDB_SIZE,
155 cmd_params->extended_cdb_sge.sge_len);
156 break;
157 case ISCSI_TASK_TYPE_LOGIN_RESPONSE:
158 case ISCSI_TASK_TYPE_MIDPATH:
159 {
160 bool advance_statsn = true;
161
162 if (task_type == ISCSI_TASK_TYPE_LOGIN_RESPONSE)
163 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
164 ISCSI_WQE_TYPE_LOGIN);
165 else
166 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
167 ISCSI_WQE_TYPE_MIDDLE_PATH);
168
169 if (task_type == ISCSI_TASK_TYPE_MIDPATH) {
170 u8 opcode = GET_FIELD(pdu_header->hdr_first_byte,
171 ISCSI_COMMON_HDR_OPCODE);
172
173 if (opcode != ISCSI_OPCODE_TEXT_RESPONSE &&
174 (opcode != ISCSI_OPCODE_NOP_IN ||
175 pdu_header->itt == ISCSI_TTT_ALL_ONES))
176 advance_statsn = false;
177 }
178
179 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_RESPONSE,
180 advance_statsn ? 1 : 0);
181
182 if (task_params->tx_io_size) {
183 SET_FIELD(task_params->sqe->contlen_cdbsize,
184 ISCSI_WQE_CONT_LEN, task_params->tx_io_size);
185
186 if (scsi_is_slow_sgl(sgl_task_params->num_sges,
187 sgl_task_params->small_mid_sge))
188 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES,
189 ISCSI_WQE_NUM_SGES_SLOWIO);
190 else
191 SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES,
192 min(sgl_task_params->num_sges,
193 (u16)SCSI_NUM_SGES_SLOW_SGL_THR));
194 }
195 }
196 break;
197 default:
198 break;
199 }
200 }
201
202 static void init_default_iscsi_task(struct iscsi_task_params *task_params,
203 struct data_hdr *pdu_header,
204 enum iscsi_task_type task_type)
205 {
206 struct iscsi_task_context *context;
207 u16 index;
208 u32 val;
209
210 context = task_params->context;
211 memset(context, 0, sizeof(*context));
212
213 for (index = 0; index <
214 ARRAY_SIZE(context->ystorm_st_context.pdu_hdr.data.data);
215 index++) {
216 val = cpu_to_le32(pdu_header->data[index]);
217 context->ystorm_st_context.pdu_hdr.data.data[index] = val;
218 }
219
220 context->mstorm_st_context.task_type = task_type;
221 context->mstorm_ag_context.task_cid =
222 cpu_to_le16(task_params->conn_icid);
223
224 SET_FIELD(context->ustorm_ag_context.flags1,
225 USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1);
226
227 context->ustorm_st_context.task_type = task_type;
228 context->ustorm_st_context.cq_rss_number = task_params->cq_rss_number;
229 context->ustorm_ag_context.icid = cpu_to_le16(task_params->conn_icid);
230 }
231
232 static
233 void init_initiator_rw_cdb_ystorm_context(struct ystorm_iscsi_task_st_ctx *ystc,
234 struct scsi_initiator_cmd_params *cmd)
235 {
236 union iscsi_task_hdr *ctx_pdu_hdr = &ystc->pdu_hdr;
237 u32 val;
238
239 if (!cmd->extended_cdb_sge.sge_len)
240 return;
241
242 SET_FIELD(ctx_pdu_hdr->ext_cdb_cmd.hdr_second_dword,
243 ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE,
244 cmd->extended_cdb_sge.sge_len);
245 val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.lo);
246 ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.lo = val;
247 val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.hi);
248 ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.hi = val;
249 val = cpu_to_le32(cmd->extended_cdb_sge.sge_len);
250 ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_len = val;
251 }
252
253 static
254 void init_ustorm_task_contexts(struct ustorm_iscsi_task_st_ctx *ustorm_st_cxt,
255 struct ustorm_iscsi_task_ag_ctx *ustorm_ag_cxt,
256 u32 remaining_recv_len,
257 u32 expected_data_transfer_len,
258 u8 num_sges, bool tx_dif_conn_err_en)
259 {
260 u32 val;
261
262 ustorm_st_cxt->rem_rcv_len = cpu_to_le32(remaining_recv_len);
263 ustorm_ag_cxt->exp_data_acked = cpu_to_le32(expected_data_transfer_len);
264 val = cpu_to_le32(expected_data_transfer_len);
265 ustorm_st_cxt->exp_data_transfer_len = val;
266 SET_FIELD(ustorm_st_cxt->reg1.reg1_map, ISCSI_REG1_NUM_SGES, num_sges);
267 SET_FIELD(ustorm_ag_cxt->flags2,
268 USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN,
269 tx_dif_conn_err_en ? 1 : 0);
270 }
271
272 static
273 void set_rw_exp_data_acked_and_cont_len(struct iscsi_task_context *context,
274 struct iscsi_conn_params *conn_params,
275 enum iscsi_task_type task_type,
276 u32 task_size,
277 u32 exp_data_transfer_len,
278 u8 total_ahs_length)
279 {
280 u32 max_unsolicited_data = 0, val;
281
282 if (total_ahs_length &&
283 (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE ||
284 task_type == ISCSI_TASK_TYPE_INITIATOR_READ))
285 SET_FIELD(context->ustorm_st_context.flags2,
286 USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST, 1);
287
288 switch (task_type) {
289 case ISCSI_TASK_TYPE_INITIATOR_WRITE:
290 if (!conn_params->initial_r2t)
291 max_unsolicited_data = conn_params->first_burst_length;
292 else if (conn_params->immediate_data)
293 max_unsolicited_data =
294 min(conn_params->first_burst_length,
295 conn_params->max_send_pdu_length);
296
297 context->ustorm_ag_context.exp_data_acked =
298 cpu_to_le32(total_ahs_length == 0 ?
299 min(exp_data_transfer_len,
300 max_unsolicited_data) :
301 ((u32)(total_ahs_length +
302 ISCSI_AHS_CNTL_SIZE)));
303 break;
304 case ISCSI_TASK_TYPE_TARGET_READ:
305 val = cpu_to_le32(exp_data_transfer_len);
306 context->ustorm_ag_context.exp_data_acked = val;
307 break;
308 case ISCSI_TASK_TYPE_INITIATOR_READ:
309 context->ustorm_ag_context.exp_data_acked =
310 cpu_to_le32((total_ahs_length == 0 ? 0 :
311 total_ahs_length +
312 ISCSI_AHS_CNTL_SIZE));
313 break;
314 case ISCSI_TASK_TYPE_TARGET_WRITE:
315 val = cpu_to_le32(task_size);
316 context->ustorm_ag_context.exp_cont_len = val;
317 break;
318 default:
319 break;
320 }
321 }
322
323 static
324 void init_rtdif_task_context(struct rdif_task_context *rdif_context,
325 struct tdif_task_context *tdif_context,
326 struct scsi_dif_task_params *dif_task_params,
327 enum iscsi_task_type task_type)
328 {
329 u32 val;
330
331 if (!dif_task_params->dif_on_network || !dif_task_params->dif_on_host)
332 return;
333
334 if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE ||
335 task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
336 rdif_context->app_tag_value =
337 cpu_to_le16(dif_task_params->application_tag);
338 rdif_context->partial_crc_value = cpu_to_le16(0xffff);
339 val = cpu_to_le32(dif_task_params->initial_ref_tag);
340 rdif_context->initial_ref_tag = val;
341 rdif_context->app_tag_mask =
342 cpu_to_le16(dif_task_params->application_tag_mask);
343 SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_CRC_SEED,
344 dif_task_params->crc_seed ? 1 : 0);
345 SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_HOSTGUARDTYPE,
346 dif_task_params->host_guard_type);
347 SET_FIELD(rdif_context->flags0,
348 RDIF_TASK_CONTEXT_PROTECTIONTYPE,
349 dif_task_params->protection_type);
350 SET_FIELD(rdif_context->flags0,
351 RDIF_TASK_CONTEXT_INITIALREFTAGVALID, 1);
352 SET_FIELD(rdif_context->flags0,
353 RDIF_TASK_CONTEXT_KEEPREFTAGCONST,
354 dif_task_params->keep_ref_tag_const ? 1 : 0);
355 SET_FIELD(rdif_context->flags1,
356 RDIF_TASK_CONTEXT_VALIDATEAPPTAG,
357 (dif_task_params->validate_app_tag &&
358 dif_task_params->dif_on_network) ? 1 : 0);
359 SET_FIELD(rdif_context->flags1,
360 RDIF_TASK_CONTEXT_VALIDATEGUARD,
361 (dif_task_params->validate_guard &&
362 dif_task_params->dif_on_network) ? 1 : 0);
363 SET_FIELD(rdif_context->flags1,
364 RDIF_TASK_CONTEXT_VALIDATEREFTAG,
365 (dif_task_params->validate_ref_tag &&
366 dif_task_params->dif_on_network) ? 1 : 0);
367 SET_FIELD(rdif_context->flags1,
368 RDIF_TASK_CONTEXT_HOSTINTERFACE,
369 dif_task_params->dif_on_host ? 1 : 0);
370 SET_FIELD(rdif_context->flags1,
371 RDIF_TASK_CONTEXT_NETWORKINTERFACE,
372 dif_task_params->dif_on_network ? 1 : 0);
373 SET_FIELD(rdif_context->flags1,
374 RDIF_TASK_CONTEXT_FORWARDGUARD,
375 dif_task_params->forward_guard ? 1 : 0);
376 SET_FIELD(rdif_context->flags1,
377 RDIF_TASK_CONTEXT_FORWARDAPPTAG,
378 dif_task_params->forward_app_tag ? 1 : 0);
379 SET_FIELD(rdif_context->flags1,
380 RDIF_TASK_CONTEXT_FORWARDREFTAG,
381 dif_task_params->forward_ref_tag ? 1 : 0);
382 SET_FIELD(rdif_context->flags1,
383 RDIF_TASK_CONTEXT_FORWARDAPPTAGWITHMASK,
384 dif_task_params->forward_app_tag_with_mask ? 1 : 0);
385 SET_FIELD(rdif_context->flags1,
386 RDIF_TASK_CONTEXT_FORWARDREFTAGWITHMASK,
387 dif_task_params->forward_ref_tag_with_mask ? 1 : 0);
388 SET_FIELD(rdif_context->flags1,
389 RDIF_TASK_CONTEXT_INTERVALSIZE,
390 dif_task_params->dif_block_size_log - 9);
391 SET_FIELD(rdif_context->state,
392 RDIF_TASK_CONTEXT_REFTAGMASK,
393 dif_task_params->ref_tag_mask);
394 SET_FIELD(rdif_context->state, RDIF_TASK_CONTEXT_IGNOREAPPTAG,
395 dif_task_params->ignore_app_tag);
396 }
397
398 if (task_type == ISCSI_TASK_TYPE_TARGET_READ ||
399 task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
400 tdif_context->app_tag_value =
401 cpu_to_le16(dif_task_params->application_tag);
402 tdif_context->partial_crc_valueB =
403 cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000);
404 tdif_context->partial_crc_value_a =
405 cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000);
406 SET_FIELD(tdif_context->flags0, TDIF_TASK_CONTEXT_CRC_SEED,
407 dif_task_params->crc_seed ? 1 : 0);
408
409 SET_FIELD(tdif_context->flags0,
410 TDIF_TASK_CONTEXT_SETERRORWITHEOP,
411 dif_task_params->tx_dif_conn_err_en ? 1 : 0);
412 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDGUARD,
413 dif_task_params->forward_guard ? 1 : 0);
414 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDAPPTAG,
415 dif_task_params->forward_app_tag ? 1 : 0);
416 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARDREFTAG,
417 dif_task_params->forward_ref_tag ? 1 : 0);
418 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_INTERVALSIZE,
419 dif_task_params->dif_block_size_log - 9);
420 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_HOSTINTERFACE,
421 dif_task_params->dif_on_host ? 1 : 0);
422 SET_FIELD(tdif_context->flags1,
423 TDIF_TASK_CONTEXT_NETWORKINTERFACE,
424 dif_task_params->dif_on_network ? 1 : 0);
425 val = cpu_to_le32(dif_task_params->initial_ref_tag);
426 tdif_context->initial_ref_tag = val;
427 tdif_context->app_tag_mask =
428 cpu_to_le16(dif_task_params->application_tag_mask);
429 SET_FIELD(tdif_context->flags0,
430 TDIF_TASK_CONTEXT_HOSTGUARDTYPE,
431 dif_task_params->host_guard_type);
432 SET_FIELD(tdif_context->flags0,
433 TDIF_TASK_CONTEXT_PROTECTIONTYPE,
434 dif_task_params->protection_type);
435 SET_FIELD(tdif_context->flags0,
436 TDIF_TASK_CONTEXT_INITIALREFTAGVALID,
437 dif_task_params->initial_ref_tag_is_valid ? 1 : 0);
438 SET_FIELD(tdif_context->flags0,
439 TDIF_TASK_CONTEXT_KEEPREFTAGCONST,
440 dif_task_params->keep_ref_tag_const ? 1 : 0);
441 SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_VALIDATEGUARD,
442 (dif_task_params->validate_guard &&
443 dif_task_params->dif_on_host) ? 1 : 0);
444 SET_FIELD(tdif_context->flags1,
445 TDIF_TASK_CONTEXT_VALIDATEAPPTAG,
446 (dif_task_params->validate_app_tag &&
447 dif_task_params->dif_on_host) ? 1 : 0);
448 SET_FIELD(tdif_context->flags1,
449 TDIF_TASK_CONTEXT_VALIDATEREFTAG,
450 (dif_task_params->validate_ref_tag &&
451 dif_task_params->dif_on_host) ? 1 : 0);
452 SET_FIELD(tdif_context->flags1,
453 TDIF_TASK_CONTEXT_FORWARDAPPTAGWITHMASK,
454 dif_task_params->forward_app_tag_with_mask ? 1 : 0);
455 SET_FIELD(tdif_context->flags1,
456 TDIF_TASK_CONTEXT_FORWARDREFTAGWITHMASK,
457 dif_task_params->forward_ref_tag_with_mask ? 1 : 0);
458 SET_FIELD(tdif_context->flags1,
459 TDIF_TASK_CONTEXT_REFTAGMASK,
460 dif_task_params->ref_tag_mask);
461 SET_FIELD(tdif_context->flags0,
462 TDIF_TASK_CONTEXT_IGNOREAPPTAG,
463 dif_task_params->ignore_app_tag ? 1 : 0);
464 }
465 }
466
467 static void set_local_completion_context(struct iscsi_task_context *context)
468 {
469 SET_FIELD(context->ystorm_st_context.state.flags,
470 YSTORM_ISCSI_TASK_STATE_LOCAL_COMP, 1);
471 SET_FIELD(context->ustorm_st_context.flags,
472 USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 1);
473 }
474
475 static int init_rw_iscsi_task(struct iscsi_task_params *task_params,
476 enum iscsi_task_type task_type,
477 struct iscsi_conn_params *conn_params,
478 struct iscsi_common_hdr *pdu_header,
479 struct scsi_sgl_task_params *sgl_task_params,
480 struct scsi_initiator_cmd_params *cmd_params,
481 struct scsi_dif_task_params *dif_task_params)
482 {
483 u32 exp_data_transfer_len = conn_params->max_burst_length;
484 struct iscsi_task_context *cxt;
485 bool slow_io = false;
486 u32 task_size, val;
487 u8 num_sges = 0;
488
489 task_size = calc_rw_task_size(task_params, task_type, sgl_task_params,
490 dif_task_params);
491
492 init_default_iscsi_task(task_params, (struct data_hdr *)pdu_header,
493 task_type);
494
495 cxt = task_params->context;
496
497 val = cpu_to_le32(task_size);
498 cxt->ystorm_st_context.pdu_hdr.cmd.expected_transfer_length = val;
499 init_initiator_rw_cdb_ystorm_context(&cxt->ystorm_st_context,
500 cmd_params);
501 val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.lo);
502 cxt->mstorm_st_context.sense_db.lo = val;
503
504 val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.hi);
505 cxt->mstorm_st_context.sense_db.hi = val;
506
507 if (task_params->tx_io_size) {
508 init_dif_context_flags(&cxt->ystorm_st_context.state.dif_flags,
509 dif_task_params);
510 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
511 &cxt->ystorm_st_context.state.data_desc,
512 sgl_task_params);
513
514 slow_io = scsi_is_slow_sgl(sgl_task_params->num_sges,
515 sgl_task_params->small_mid_sge);
516
517 num_sges = !slow_io ? min_t(u16, sgl_task_params->num_sges,
518 (u16)SCSI_NUM_SGES_SLOW_SGL_THR) :
519 ISCSI_WQE_NUM_SGES_SLOWIO;
520
521 if (slow_io) {
522 SET_FIELD(cxt->ystorm_st_context.state.flags,
523 YSTORM_ISCSI_TASK_STATE_SLOW_IO, 1);
524 }
525 } else if (task_params->rx_io_size) {
526 init_dif_context_flags(&cxt->mstorm_st_context.dif_flags,
527 dif_task_params);
528 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
529 &cxt->mstorm_st_context.data_desc,
530 sgl_task_params);
531 num_sges = !scsi_is_slow_sgl(sgl_task_params->num_sges,
532 sgl_task_params->small_mid_sge) ?
533 min_t(u16, sgl_task_params->num_sges,
534 (u16)SCSI_NUM_SGES_SLOW_SGL_THR) :
535 ISCSI_WQE_NUM_SGES_SLOWIO;
536 cxt->mstorm_st_context.rem_task_size = cpu_to_le32(task_size);
537 }
538
539 if (exp_data_transfer_len > task_size ||
540 task_type != ISCSI_TASK_TYPE_TARGET_WRITE)
541 exp_data_transfer_len = task_size;
542
543 init_ustorm_task_contexts(&task_params->context->ustorm_st_context,
544 &task_params->context->ustorm_ag_context,
545 task_size, exp_data_transfer_len, num_sges,
546 dif_task_params ?
547 dif_task_params->tx_dif_conn_err_en : false);
548
549 set_rw_exp_data_acked_and_cont_len(task_params->context, conn_params,
550 task_type, task_size,
551 exp_data_transfer_len,
552 GET_FIELD(pdu_header->hdr_second_dword,
553 ISCSI_CMD_HDR_TOTAL_AHS_LEN));
554
555 if (dif_task_params)
556 init_rtdif_task_context(&task_params->context->rdif_context,
557 &task_params->context->tdif_context,
558 dif_task_params, task_type);
559
560 init_sqe(task_params, sgl_task_params, dif_task_params, pdu_header,
561 cmd_params, task_type, false);
562
563 return 0;
564 }
565
566 int init_initiator_rw_iscsi_task(struct iscsi_task_params *task_params,
567 struct iscsi_conn_params *conn_params,
568 struct scsi_initiator_cmd_params *cmd_params,
569 struct iscsi_cmd_hdr *cmd_header,
570 struct scsi_sgl_task_params *tx_sgl_params,
571 struct scsi_sgl_task_params *rx_sgl_params,
572 struct scsi_dif_task_params *dif_task_params)
573 {
574 if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_WRITE))
575 return init_rw_iscsi_task(task_params,
576 ISCSI_TASK_TYPE_INITIATOR_WRITE,
577 conn_params,
578 (struct iscsi_common_hdr *)cmd_header,
579 tx_sgl_params, cmd_params,
580 dif_task_params);
581 else if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_READ) ||
582 (task_params->rx_io_size == 0 && task_params->tx_io_size == 0))
583 return init_rw_iscsi_task(task_params,
584 ISCSI_TASK_TYPE_INITIATOR_READ,
585 conn_params,
586 (struct iscsi_common_hdr *)cmd_header,
587 rx_sgl_params, cmd_params,
588 dif_task_params);
589 else
590 return -1;
591 }
592
593 int init_initiator_login_request_task(struct iscsi_task_params *task_params,
594 struct iscsi_login_req_hdr *login_header,
595 struct scsi_sgl_task_params *tx_params,
596 struct scsi_sgl_task_params *rx_params)
597 {
598 struct iscsi_task_context *cxt;
599
600 cxt = task_params->context;
601
602 init_default_iscsi_task(task_params,
603 (struct data_hdr *)login_header,
604 ISCSI_TASK_TYPE_MIDPATH);
605
606 init_ustorm_task_contexts(&cxt->ustorm_st_context,
607 &cxt->ustorm_ag_context,
608 task_params->rx_io_size ?
609 rx_params->total_buffer_size : 0,
610 task_params->tx_io_size ?
611 tx_params->total_buffer_size : 0, 0,
612 0);
613
614 if (task_params->tx_io_size)
615 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
616 &cxt->ystorm_st_context.state.data_desc,
617 tx_params);
618
619 if (task_params->rx_io_size)
620 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
621 &cxt->mstorm_st_context.data_desc,
622 rx_params);
623
624 cxt->mstorm_st_context.rem_task_size =
625 cpu_to_le32(task_params->rx_io_size ?
626 rx_params->total_buffer_size : 0);
627
628 init_sqe(task_params, tx_params, NULL,
629 (struct iscsi_common_hdr *)login_header, NULL,
630 ISCSI_TASK_TYPE_MIDPATH, false);
631
632 return 0;
633 }
634
635 int init_initiator_nop_out_task(struct iscsi_task_params *task_params,
636 struct iscsi_nop_out_hdr *nop_out_pdu_header,
637 struct scsi_sgl_task_params *tx_sgl_task_params,
638 struct scsi_sgl_task_params *rx_sgl_task_params)
639 {
640 struct iscsi_task_context *cxt;
641
642 cxt = task_params->context;
643
644 init_default_iscsi_task(task_params,
645 (struct data_hdr *)nop_out_pdu_header,
646 ISCSI_TASK_TYPE_MIDPATH);
647
648 if (nop_out_pdu_header->itt == ISCSI_ITT_ALL_ONES)
649 set_local_completion_context(task_params->context);
650
651 if (task_params->tx_io_size)
652 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
653 &cxt->ystorm_st_context.state.data_desc,
654 tx_sgl_task_params);
655
656 if (task_params->rx_io_size)
657 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
658 &cxt->mstorm_st_context.data_desc,
659 rx_sgl_task_params);
660
661 init_ustorm_task_contexts(&cxt->ustorm_st_context,
662 &cxt->ustorm_ag_context,
663 task_params->rx_io_size ?
664 rx_sgl_task_params->total_buffer_size : 0,
665 task_params->tx_io_size ?
666 tx_sgl_task_params->total_buffer_size : 0,
667 0, 0);
668
669 cxt->mstorm_st_context.rem_task_size =
670 cpu_to_le32(task_params->rx_io_size ?
671 rx_sgl_task_params->total_buffer_size :
672 0);
673
674 init_sqe(task_params, tx_sgl_task_params, NULL,
675 (struct iscsi_common_hdr *)nop_out_pdu_header, NULL,
676 ISCSI_TASK_TYPE_MIDPATH, false);
677
678 return 0;
679 }
680
681 int init_initiator_logout_request_task(struct iscsi_task_params *task_params,
682 struct iscsi_logout_req_hdr *logout_hdr,
683 struct scsi_sgl_task_params *tx_params,
684 struct scsi_sgl_task_params *rx_params)
685 {
686 struct iscsi_task_context *cxt;
687
688 cxt = task_params->context;
689
690 init_default_iscsi_task(task_params,
691 (struct data_hdr *)logout_hdr,
692 ISCSI_TASK_TYPE_MIDPATH);
693
694 if (task_params->tx_io_size)
695 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
696 &cxt->ystorm_st_context.state.data_desc,
697 tx_params);
698
699 if (task_params->rx_io_size)
700 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
701 &cxt->mstorm_st_context.data_desc,
702 rx_params);
703
704 init_ustorm_task_contexts(&cxt->ustorm_st_context,
705 &cxt->ustorm_ag_context,
706 task_params->rx_io_size ?
707 rx_params->total_buffer_size : 0,
708 task_params->tx_io_size ?
709 tx_params->total_buffer_size : 0,
710 0, 0);
711
712 cxt->mstorm_st_context.rem_task_size =
713 cpu_to_le32(task_params->rx_io_size ?
714 rx_params->total_buffer_size : 0);
715
716 init_sqe(task_params, tx_params, NULL,
717 (struct iscsi_common_hdr *)logout_hdr, NULL,
718 ISCSI_TASK_TYPE_MIDPATH, false);
719
720 return 0;
721 }
722
723 int init_initiator_tmf_request_task(struct iscsi_task_params *task_params,
724 struct iscsi_tmf_request_hdr *tmf_header)
725 {
726 init_default_iscsi_task(task_params, (struct data_hdr *)tmf_header,
727 ISCSI_TASK_TYPE_MIDPATH);
728
729 init_sqe(task_params, NULL, NULL,
730 (struct iscsi_common_hdr *)tmf_header, NULL,
731 ISCSI_TASK_TYPE_MIDPATH, false);
732
733 return 0;
734 }
735
736 int init_initiator_text_request_task(struct iscsi_task_params *task_params,
737 struct iscsi_text_request_hdr *text_header,
738 struct scsi_sgl_task_params *tx_params,
739 struct scsi_sgl_task_params *rx_params)
740 {
741 struct iscsi_task_context *cxt;
742
743 cxt = task_params->context;
744
745 init_default_iscsi_task(task_params,
746 (struct data_hdr *)text_header,
747 ISCSI_TASK_TYPE_MIDPATH);
748
749 if (task_params->tx_io_size)
750 init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
751 &cxt->ystorm_st_context.state.data_desc,
752 tx_params);
753
754 if (task_params->rx_io_size)
755 init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
756 &cxt->mstorm_st_context.data_desc,
757 rx_params);
758
759 cxt->mstorm_st_context.rem_task_size =
760 cpu_to_le32(task_params->rx_io_size ?
761 rx_params->total_buffer_size : 0);
762
763 init_ustorm_task_contexts(&cxt->ustorm_st_context,
764 &cxt->ustorm_ag_context,
765 task_params->rx_io_size ?
766 rx_params->total_buffer_size : 0,
767 task_params->tx_io_size ?
768 tx_params->total_buffer_size : 0, 0, 0);
769
770 init_sqe(task_params, tx_params, NULL,
771 (struct iscsi_common_hdr *)text_header, NULL,
772 ISCSI_TASK_TYPE_MIDPATH, false);
773
774 return 0;
775 }
776
777 int init_cleanup_task(struct iscsi_task_params *task_params)
778 {
779 init_sqe(task_params, NULL, NULL, NULL, NULL, ISCSI_TASK_TYPE_MIDPATH,
780 true);
781 return 0;
782 }
Linux with added FPC-III support