1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* QLogic iSCSI Offload Driver |
3 | * Copyright (c) 2016 Cavium Inc. |
4 | */ |
5 | |
6 | #include <linux/types.h> |
7 | #include <asm/byteorder.h> |
8 | #include "qedi_hsi.h" |
9 | #include <linux/qed/qed_if.h> |
10 | |
11 | #include "qedi_fw_iscsi.h" |
12 | #include "qedi_fw_scsi.h" |
13 | |
14 | #define SCSI_NUM_SGES_IN_CACHE 0x4 |
15 | |
16 | static bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge) |
17 | { |
18 | return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge); |
19 | } |
20 | |
21 | static |
22 | void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params, |
23 | struct scsi_cached_sges *ctx_data_desc, |
24 | struct scsi_sgl_task_params *sgl_task_params) |
25 | { |
26 | u8 sge_index; |
27 | u8 num_sges; |
28 | u32 val; |
29 | |
30 | num_sges = (sgl_task_params->num_sges > SCSI_NUM_SGES_IN_CACHE) ? |
31 | SCSI_NUM_SGES_IN_CACHE : sgl_task_params->num_sges; |
32 | |
33 | /* sgl params */ |
34 | val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo); |
35 | ctx_sgl_params->sgl_addr.lo = val; |
36 | val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi); |
37 | ctx_sgl_params->sgl_addr.hi = val; |
38 | val = cpu_to_le32(sgl_task_params->total_buffer_size); |
39 | ctx_sgl_params->sgl_total_length = val; |
40 | ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges); |
41 | |
42 | for (sge_index = 0; sge_index < num_sges; sge_index++) { |
43 | val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo); |
44 | ctx_data_desc->sge[sge_index].sge_addr.lo = val; |
45 | val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi); |
46 | ctx_data_desc->sge[sge_index].sge_addr.hi = val; |
47 | val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len); |
48 | ctx_data_desc->sge[sge_index].sge_len = val; |
49 | } |
50 | } |
51 | |
52 | static u32 calc_rw_task_size(struct iscsi_task_params *task_params, |
53 | enum iscsi_task_type task_type, |
54 | struct scsi_sgl_task_params *sgl_task_params, |
55 | struct scsi_dif_task_params *dif_task_params) |
56 | { |
57 | u32 io_size; |
58 | |
59 | if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE || |
60 | task_type == ISCSI_TASK_TYPE_TARGET_READ) |
61 | io_size = task_params->tx_io_size; |
62 | else |
63 | io_size = task_params->rx_io_size; |
64 | |
65 | if (!io_size) |
66 | return 0; |
67 | |
68 | if (!dif_task_params) |
69 | return io_size; |
70 | |
71 | return !dif_task_params->dif_on_network ? |
72 | io_size : sgl_task_params->total_buffer_size; |
73 | } |
74 | |
75 | static void |
76 | init_dif_context_flags(struct iscsi_dif_flags *ctx_dif_flags, |
77 | struct scsi_dif_task_params *dif_task_params) |
78 | { |
79 | if (!dif_task_params) |
80 | return; |
81 | |
82 | SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG, |
83 | dif_task_params->dif_block_size_log); |
84 | SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_DIF_TO_PEER, |
85 | dif_task_params->dif_on_network ? 1 : 0); |
86 | SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_HOST_INTERFACE, |
87 | dif_task_params->dif_on_host ? 1 : 0); |
88 | } |
89 | |
90 | static void init_sqe(struct iscsi_task_params *task_params, |
91 | struct scsi_sgl_task_params *sgl_task_params, |
92 | struct scsi_dif_task_params *dif_task_params, |
93 | struct iscsi_common_hdr *, |
94 | struct scsi_initiator_cmd_params *cmd_params, |
95 | enum iscsi_task_type task_type, |
96 | bool is_cleanup) |
97 | { |
98 | if (!task_params->sqe) |
99 | return; |
100 | |
101 | memset(task_params->sqe, 0, sizeof(*task_params->sqe)); |
102 | task_params->sqe->task_id = cpu_to_le16(task_params->itid); |
103 | if (is_cleanup) { |
104 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
105 | ISCSI_WQE_TYPE_TASK_CLEANUP); |
106 | return; |
107 | } |
108 | |
109 | switch (task_type) { |
110 | case ISCSI_TASK_TYPE_INITIATOR_WRITE: |
111 | { |
112 | u32 buf_size = 0; |
113 | u32 num_sges = 0; |
114 | |
115 | init_dif_context_flags(ctx_dif_flags: &task_params->sqe->prot_flags, |
116 | dif_task_params); |
117 | |
118 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
119 | ISCSI_WQE_TYPE_NORMAL); |
120 | |
121 | if (task_params->tx_io_size) { |
122 | buf_size = calc_rw_task_size(task_params, task_type, |
123 | sgl_task_params, |
124 | dif_task_params); |
125 | |
126 | if (scsi_is_slow_sgl(num_sges: sgl_task_params->num_sges, |
127 | small_mid_sge: sgl_task_params->small_mid_sge)) |
128 | num_sges = ISCSI_WQE_NUM_SGES_SLOWIO; |
129 | else |
130 | num_sges = min(sgl_task_params->num_sges, |
131 | (u16)SCSI_NUM_SGES_SLOW_SGL_THR); |
132 | } |
133 | |
134 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, |
135 | num_sges); |
136 | SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CONT_LEN, |
137 | buf_size); |
138 | |
139 | if (GET_FIELD(pdu_header->hdr_second_dword, |
140 | ISCSI_CMD_HDR_TOTAL_AHS_LEN)) |
141 | SET_FIELD(task_params->sqe->contlen_cdbsize, |
142 | ISCSI_WQE_CDB_SIZE, |
143 | cmd_params->extended_cdb_sge.sge_len); |
144 | } |
145 | break; |
146 | case ISCSI_TASK_TYPE_INITIATOR_READ: |
147 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
148 | ISCSI_WQE_TYPE_NORMAL); |
149 | |
150 | if (GET_FIELD(pdu_header->hdr_second_dword, |
151 | ISCSI_CMD_HDR_TOTAL_AHS_LEN)) |
152 | SET_FIELD(task_params->sqe->contlen_cdbsize, |
153 | ISCSI_WQE_CDB_SIZE, |
154 | cmd_params->extended_cdb_sge.sge_len); |
155 | break; |
156 | case ISCSI_TASK_TYPE_LOGIN_RESPONSE: |
157 | case ISCSI_TASK_TYPE_MIDPATH: |
158 | { |
159 | bool advance_statsn = true; |
160 | |
161 | if (task_type == ISCSI_TASK_TYPE_LOGIN_RESPONSE) |
162 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
163 | ISCSI_WQE_TYPE_LOGIN); |
164 | else |
165 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE, |
166 | ISCSI_WQE_TYPE_MIDDLE_PATH); |
167 | |
168 | if (task_type == ISCSI_TASK_TYPE_MIDPATH) { |
169 | u8 opcode = GET_FIELD(pdu_header->hdr_first_byte, |
170 | ISCSI_COMMON_HDR_OPCODE); |
171 | |
172 | if (opcode != ISCSI_OPCODE_TEXT_RESPONSE && |
173 | (opcode != ISCSI_OPCODE_NOP_IN || |
174 | pdu_header->itt == ISCSI_TTT_ALL_ONES)) |
175 | advance_statsn = false; |
176 | } |
177 | |
178 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_RESPONSE, |
179 | advance_statsn ? 1 : 0); |
180 | |
181 | if (task_params->tx_io_size) { |
182 | SET_FIELD(task_params->sqe->contlen_cdbsize, |
183 | ISCSI_WQE_CONT_LEN, task_params->tx_io_size); |
184 | |
185 | if (scsi_is_slow_sgl(num_sges: sgl_task_params->num_sges, |
186 | small_mid_sge: sgl_task_params->small_mid_sge)) |
187 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, |
188 | ISCSI_WQE_NUM_SGES_SLOWIO); |
189 | else |
190 | SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, |
191 | min(sgl_task_params->num_sges, |
192 | (u16)SCSI_NUM_SGES_SLOW_SGL_THR)); |
193 | } |
194 | } |
195 | break; |
196 | default: |
197 | break; |
198 | } |
199 | } |
200 | |
201 | static void init_default_iscsi_task(struct iscsi_task_params *task_params, |
202 | struct data_hdr *, |
203 | enum iscsi_task_type task_type) |
204 | { |
205 | struct iscsi_task_context *context; |
206 | u32 val; |
207 | u16 index; |
208 | u8 val_byte; |
209 | |
210 | context = task_params->context; |
211 | val_byte = context->mstorm_ag_context.cdu_validation; |
212 | memset(context, 0, sizeof(*context)); |
213 | context->mstorm_ag_context.cdu_validation = val_byte; |
214 | |
215 | for (index = 0; index < |
216 | ARRAY_SIZE(context->ystorm_st_context.pdu_hdr.data.data); |
217 | index++) { |
218 | val = cpu_to_le32(pdu_header->data[index]); |
219 | context->ystorm_st_context.pdu_hdr.data.data[index] = val; |
220 | } |
221 | |
222 | context->mstorm_st_context.task_type = task_type; |
223 | context->mstorm_ag_context.task_cid = |
224 | cpu_to_le16(task_params->conn_icid); |
225 | |
226 | SET_FIELD(context->ustorm_ag_context.flags1, |
227 | USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1); |
228 | |
229 | context->ustorm_st_context.task_type = task_type; |
230 | context->ustorm_st_context.cq_rss_number = task_params->cq_rss_number; |
231 | context->ustorm_ag_context.icid = cpu_to_le16(task_params->conn_icid); |
232 | } |
233 | |
234 | static |
235 | void init_initiator_rw_cdb_ystorm_context(struct ystorm_iscsi_task_st_ctx *ystc, |
236 | struct scsi_initiator_cmd_params *cmd) |
237 | { |
238 | union iscsi_task_hdr *ctx_pdu_hdr = &ystc->pdu_hdr; |
239 | u32 val; |
240 | |
241 | if (!cmd->extended_cdb_sge.sge_len) |
242 | return; |
243 | |
244 | SET_FIELD(ctx_pdu_hdr->ext_cdb_cmd.hdr_second_dword, |
245 | ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE, |
246 | cmd->extended_cdb_sge.sge_len); |
247 | val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.lo); |
248 | ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.lo = val; |
249 | val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.hi); |
250 | ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.hi = val; |
251 | val = cpu_to_le32(cmd->extended_cdb_sge.sge_len); |
252 | ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_len = val; |
253 | } |
254 | |
255 | static |
256 | void init_ustorm_task_contexts(struct ustorm_iscsi_task_st_ctx *ustorm_st_cxt, |
257 | struct ustorm_iscsi_task_ag_ctx *ustorm_ag_cxt, |
258 | u32 remaining_recv_len, u32 expected_data_transfer_len, |
259 | u8 num_sges, bool tx_dif_conn_err_en) |
260 | { |
261 | u32 val; |
262 | |
263 | ustorm_st_cxt->rem_rcv_len = cpu_to_le32(remaining_recv_len); |
264 | ustorm_ag_cxt->exp_data_acked = cpu_to_le32(expected_data_transfer_len); |
265 | val = cpu_to_le32(expected_data_transfer_len); |
266 | ustorm_st_cxt->exp_data_transfer_len = val; |
267 | SET_FIELD(ustorm_st_cxt->reg1.reg1_map, ISCSI_REG1_NUM_SGES, num_sges); |
268 | SET_FIELD(ustorm_ag_cxt->flags2, |
269 | USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN, |
270 | tx_dif_conn_err_en ? 1 : 0); |
271 | } |
272 | |
273 | static |
274 | void set_rw_exp_data_acked_and_cont_len(struct iscsi_task_context *context, |
275 | struct iscsi_conn_params *conn_params, |
276 | enum iscsi_task_type task_type, |
277 | u32 task_size, |
278 | u32 exp_data_transfer_len, |
279 | u8 total_ahs_length) |
280 | { |
281 | u32 max_unsolicited_data = 0, val; |
282 | |
283 | if (total_ahs_length && |
284 | (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE || |
285 | task_type == ISCSI_TASK_TYPE_INITIATOR_READ)) |
286 | SET_FIELD(context->ustorm_st_context.flags2, |
287 | USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST, 1); |
288 | |
289 | switch (task_type) { |
290 | case ISCSI_TASK_TYPE_INITIATOR_WRITE: |
291 | if (!conn_params->initial_r2t) |
292 | max_unsolicited_data = conn_params->first_burst_length; |
293 | else if (conn_params->immediate_data) |
294 | max_unsolicited_data = |
295 | min(conn_params->first_burst_length, |
296 | conn_params->max_send_pdu_length); |
297 | |
298 | context->ustorm_ag_context.exp_data_acked = |
299 | cpu_to_le32(total_ahs_length == 0 ? |
300 | min(exp_data_transfer_len, |
301 | max_unsolicited_data) : |
302 | ((u32)(total_ahs_length + |
303 | ISCSI_AHS_CNTL_SIZE))); |
304 | break; |
305 | case ISCSI_TASK_TYPE_TARGET_READ: |
306 | val = cpu_to_le32(exp_data_transfer_len); |
307 | context->ustorm_ag_context.exp_data_acked = val; |
308 | break; |
309 | case ISCSI_TASK_TYPE_INITIATOR_READ: |
310 | context->ustorm_ag_context.exp_data_acked = |
311 | cpu_to_le32((total_ahs_length == 0 ? 0 : |
312 | total_ahs_length + |
313 | ISCSI_AHS_CNTL_SIZE)); |
314 | break; |
315 | case ISCSI_TASK_TYPE_TARGET_WRITE: |
316 | val = cpu_to_le32(task_size); |
317 | context->ustorm_ag_context.exp_cont_len = val; |
318 | break; |
319 | default: |
320 | break; |
321 | } |
322 | } |
323 | |
324 | static |
325 | void init_rtdif_task_context(struct rdif_task_context *rdif_context, |
326 | struct tdif_task_context *tdif_context, |
327 | struct scsi_dif_task_params *dif_task_params, |
328 | enum iscsi_task_type task_type) |
329 | { |
330 | u32 val; |
331 | |
332 | if (!dif_task_params->dif_on_network || !dif_task_params->dif_on_host) |
333 | return; |
334 | |
335 | if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE || |
336 | task_type == ISCSI_TASK_TYPE_INITIATOR_READ) { |
337 | rdif_context->app_tag_value = |
338 | cpu_to_le16(dif_task_params->application_tag); |
339 | rdif_context->partial_crc_value = cpu_to_le16(0xffff); |
340 | val = cpu_to_le32(dif_task_params->initial_ref_tag); |
341 | rdif_context->initial_ref_tag = val; |
342 | rdif_context->app_tag_mask = |
343 | cpu_to_le16(dif_task_params->application_tag_mask); |
344 | SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_CRC_SEED, |
345 | dif_task_params->crc_seed ? 1 : 0); |
346 | SET_FIELD(rdif_context->flags0, |
347 | RDIF_TASK_CONTEXT_HOST_GUARD_TYPE, |
348 | dif_task_params->host_guard_type); |
349 | SET_FIELD(rdif_context->flags0, |
350 | RDIF_TASK_CONTEXT_PROTECTION_TYPE, |
351 | dif_task_params->protection_type); |
352 | SET_FIELD(rdif_context->flags0, |
353 | RDIF_TASK_CONTEXT_INITIAL_REF_TAG_VALID, 1); |
354 | SET_FIELD(rdif_context->flags0, |
355 | RDIF_TASK_CONTEXT_KEEP_REF_TAG_CONST, |
356 | dif_task_params->keep_ref_tag_const ? 1 : 0); |
357 | SET_FIELD(rdif_context->flags1, |
358 | RDIF_TASK_CONTEXT_VALIDATE_APP_TAG, |
359 | (dif_task_params->validate_app_tag && |
360 | dif_task_params->dif_on_network) ? 1 : 0); |
361 | SET_FIELD(rdif_context->flags1, |
362 | RDIF_TASK_CONTEXT_VALIDATE_GUARD, |
363 | (dif_task_params->validate_guard && |
364 | dif_task_params->dif_on_network) ? 1 : 0); |
365 | SET_FIELD(rdif_context->flags1, |
366 | RDIF_TASK_CONTEXT_VALIDATE_REF_TAG, |
367 | (dif_task_params->validate_ref_tag && |
368 | dif_task_params->dif_on_network) ? 1 : 0); |
369 | SET_FIELD(rdif_context->flags1, |
370 | RDIF_TASK_CONTEXT_HOST_INTERFACE, |
371 | dif_task_params->dif_on_host ? 1 : 0); |
372 | SET_FIELD(rdif_context->flags1, |
373 | RDIF_TASK_CONTEXT_NETWORK_INTERFACE, |
374 | dif_task_params->dif_on_network ? 1 : 0); |
375 | SET_FIELD(rdif_context->flags1, |
376 | RDIF_TASK_CONTEXT_FORWARD_GUARD, |
377 | dif_task_params->forward_guard ? 1 : 0); |
378 | SET_FIELD(rdif_context->flags1, |
379 | RDIF_TASK_CONTEXT_FORWARD_APP_TAG, |
380 | dif_task_params->forward_app_tag ? 1 : 0); |
381 | SET_FIELD(rdif_context->flags1, |
382 | RDIF_TASK_CONTEXT_FORWARD_REF_TAG, |
383 | dif_task_params->forward_ref_tag ? 1 : 0); |
384 | SET_FIELD(rdif_context->flags1, |
385 | RDIF_TASK_CONTEXT_FORWARD_APP_TAG_WITH_MASK, |
386 | dif_task_params->forward_app_tag_with_mask ? 1 : 0); |
387 | SET_FIELD(rdif_context->flags1, |
388 | RDIF_TASK_CONTEXT_FORWARD_REF_TAG_WITH_MASK, |
389 | dif_task_params->forward_ref_tag_with_mask ? 1 : 0); |
390 | SET_FIELD(rdif_context->flags1, |
391 | RDIF_TASK_CONTEXT_INTERVAL_SIZE, |
392 | dif_task_params->dif_block_size_log - 9); |
393 | SET_FIELD(rdif_context->state, |
394 | RDIF_TASK_CONTEXT_REF_TAG_MASK, |
395 | dif_task_params->ref_tag_mask); |
396 | SET_FIELD(rdif_context->state, RDIF_TASK_CONTEXT_IGNORE_APP_TAG, |
397 | dif_task_params->ignore_app_tag); |
398 | } |
399 | |
400 | if (task_type == ISCSI_TASK_TYPE_TARGET_READ || |
401 | task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) { |
402 | tdif_context->app_tag_value = |
403 | cpu_to_le16(dif_task_params->application_tag); |
404 | tdif_context->partial_crc_value_b = |
405 | cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000); |
406 | tdif_context->partial_crc_value_a = |
407 | cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000); |
408 | SET_FIELD(tdif_context->flags0, TDIF_TASK_CONTEXT_CRC_SEED, |
409 | dif_task_params->crc_seed ? 1 : 0); |
410 | |
411 | SET_FIELD(tdif_context->flags0, |
412 | TDIF_TASK_CONTEXT_SET_ERROR_WITH_EOP, |
413 | dif_task_params->tx_dif_conn_err_en ? 1 : 0); |
414 | SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARD_GUARD, |
415 | dif_task_params->forward_guard ? 1 : 0); |
416 | SET_FIELD(tdif_context->flags1, |
417 | TDIF_TASK_CONTEXT_FORWARD_APP_TAG, |
418 | dif_task_params->forward_app_tag ? 1 : 0); |
419 | SET_FIELD(tdif_context->flags1, |
420 | TDIF_TASK_CONTEXT_FORWARD_REF_TAG, |
421 | dif_task_params->forward_ref_tag ? 1 : 0); |
422 | SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_INTERVAL_SIZE, |
423 | dif_task_params->dif_block_size_log - 9); |
424 | SET_FIELD(tdif_context->flags1, |
425 | TDIF_TASK_CONTEXT_HOST_INTERFACE, |
426 | dif_task_params->dif_on_host ? 1 : 0); |
427 | SET_FIELD(tdif_context->flags1, |
428 | TDIF_TASK_CONTEXT_NETWORK_INTERFACE, |
429 | dif_task_params->dif_on_network ? 1 : 0); |
430 | val = cpu_to_le32(dif_task_params->initial_ref_tag); |
431 | tdif_context->initial_ref_tag = val; |
432 | tdif_context->app_tag_mask = |
433 | cpu_to_le16(dif_task_params->application_tag_mask); |
434 | SET_FIELD(tdif_context->flags0, |
435 | TDIF_TASK_CONTEXT_HOST_GUARD_TYPE, |
436 | dif_task_params->host_guard_type); |
437 | SET_FIELD(tdif_context->flags0, |
438 | TDIF_TASK_CONTEXT_PROTECTION_TYPE, |
439 | dif_task_params->protection_type); |
440 | SET_FIELD(tdif_context->flags0, |
441 | TDIF_TASK_CONTEXT_INITIAL_REF_TAG_VALID, |
442 | dif_task_params->initial_ref_tag_is_valid ? 1 : 0); |
443 | SET_FIELD(tdif_context->flags0, |
444 | TDIF_TASK_CONTEXT_KEEP_REF_TAG_CONST, |
445 | dif_task_params->keep_ref_tag_const ? 1 : 0); |
446 | SET_FIELD(tdif_context->flags1, |
447 | TDIF_TASK_CONTEXT_VALIDATE_GUARD, |
448 | (dif_task_params->validate_guard && |
449 | dif_task_params->dif_on_host) ? 1 : 0); |
450 | SET_FIELD(tdif_context->flags1, |
451 | TDIF_TASK_CONTEXT_VALIDATE_APP_TAG, |
452 | (dif_task_params->validate_app_tag && |
453 | dif_task_params->dif_on_host) ? 1 : 0); |
454 | SET_FIELD(tdif_context->flags1, |
455 | TDIF_TASK_CONTEXT_VALIDATE_REF_TAG, |
456 | (dif_task_params->validate_ref_tag && |
457 | dif_task_params->dif_on_host) ? 1 : 0); |
458 | SET_FIELD(tdif_context->flags1, |
459 | TDIF_TASK_CONTEXT_FORWARD_APP_TAG_WITH_MASK, |
460 | dif_task_params->forward_app_tag_with_mask ? 1 : 0); |
461 | SET_FIELD(tdif_context->flags1, |
462 | TDIF_TASK_CONTEXT_FORWARD_REF_TAG_WITH_MASK, |
463 | dif_task_params->forward_ref_tag_with_mask ? 1 : 0); |
464 | SET_FIELD(tdif_context->flags1, |
465 | TDIF_TASK_CONTEXT_REF_TAG_MASK, |
466 | dif_task_params->ref_tag_mask); |
467 | SET_FIELD(tdif_context->flags0, |
468 | TDIF_TASK_CONTEXT_IGNORE_APP_TAG, |
469 | dif_task_params->ignore_app_tag ? 1 : 0); |
470 | } |
471 | } |
472 | |
473 | static void set_local_completion_context(struct iscsi_task_context *context) |
474 | { |
475 | SET_FIELD(context->ystorm_st_context.state.flags, |
476 | YSTORM_ISCSI_TASK_STATE_LOCAL_COMP, 1); |
477 | SET_FIELD(context->ustorm_st_context.flags, |
478 | USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 1); |
479 | } |
480 | |
481 | static int init_rw_iscsi_task(struct iscsi_task_params *task_params, |
482 | enum iscsi_task_type task_type, |
483 | struct iscsi_conn_params *conn_params, |
484 | struct iscsi_common_hdr *, |
485 | struct scsi_sgl_task_params *sgl_task_params, |
486 | struct scsi_initiator_cmd_params *cmd_params, |
487 | struct scsi_dif_task_params *dif_task_params) |
488 | { |
489 | u32 exp_data_transfer_len = conn_params->max_burst_length; |
490 | struct iscsi_task_context *cxt; |
491 | bool slow_io = false; |
492 | u32 task_size, val; |
493 | u8 num_sges = 0; |
494 | |
495 | task_size = calc_rw_task_size(task_params, task_type, sgl_task_params, |
496 | dif_task_params); |
497 | |
498 | init_default_iscsi_task(task_params, pdu_header: (struct data_hdr *)pdu_header, |
499 | task_type); |
500 | |
501 | cxt = task_params->context; |
502 | |
503 | |
504 | if (task_type == ISCSI_TASK_TYPE_TARGET_READ) { |
505 | set_local_completion_context(cxt); |
506 | } else if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE) { |
507 | val = cpu_to_le32(task_size + |
508 | ((struct iscsi_r2t_hdr *)pdu_header)->buffer_offset); |
509 | cxt->ystorm_st_context.pdu_hdr.r2t.desired_data_trns_len = val; |
510 | cxt->mstorm_st_context.expected_itt = |
511 | cpu_to_le32(pdu_header->itt); |
512 | } else { |
513 | val = cpu_to_le32(task_size); |
514 | cxt->ystorm_st_context.pdu_hdr.cmd.expected_transfer_length = |
515 | val; |
516 | init_initiator_rw_cdb_ystorm_context(ystc: &cxt->ystorm_st_context, |
517 | cmd: cmd_params); |
518 | val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.lo); |
519 | cxt->mstorm_st_context.sense_db.lo = val; |
520 | |
521 | val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.hi); |
522 | cxt->mstorm_st_context.sense_db.hi = val; |
523 | } |
524 | |
525 | if (task_params->tx_io_size) { |
526 | init_dif_context_flags(ctx_dif_flags: &cxt->ystorm_st_context.state.dif_flags, |
527 | dif_task_params); |
528 | init_dif_context_flags(ctx_dif_flags: &cxt->ustorm_st_context.dif_flags, |
529 | dif_task_params); |
530 | init_scsi_sgl_context(ctx_sgl_params: &cxt->ystorm_st_context.state.sgl_params, |
531 | ctx_data_desc: &cxt->ystorm_st_context.state.data_desc, |
532 | sgl_task_params); |
533 | |
534 | slow_io = scsi_is_slow_sgl(num_sges: sgl_task_params->num_sges, |
535 | small_mid_sge: sgl_task_params->small_mid_sge); |
536 | |
537 | num_sges = !slow_io ? min_t(u16, sgl_task_params->num_sges, |
538 | (u16)SCSI_NUM_SGES_SLOW_SGL_THR) : |
539 | ISCSI_WQE_NUM_SGES_SLOWIO; |
540 | |
541 | if (slow_io) { |
542 | SET_FIELD(cxt->ystorm_st_context.state.flags, |
543 | YSTORM_ISCSI_TASK_STATE_SLOW_IO, 1); |
544 | } |
545 | } else if (task_params->rx_io_size) { |
546 | init_dif_context_flags(ctx_dif_flags: &cxt->mstorm_st_context.dif_flags, |
547 | dif_task_params); |
548 | init_scsi_sgl_context(ctx_sgl_params: &cxt->mstorm_st_context.sgl_params, |
549 | ctx_data_desc: &cxt->mstorm_st_context.data_desc, |
550 | sgl_task_params); |
551 | num_sges = !scsi_is_slow_sgl(num_sges: sgl_task_params->num_sges, |
552 | small_mid_sge: sgl_task_params->small_mid_sge) ? |
553 | min_t(u16, sgl_task_params->num_sges, |
554 | (u16)SCSI_NUM_SGES_SLOW_SGL_THR) : |
555 | ISCSI_WQE_NUM_SGES_SLOWIO; |
556 | cxt->mstorm_st_context.rem_task_size = cpu_to_le32(task_size); |
557 | } |
558 | |
559 | if (exp_data_transfer_len > task_size || |
560 | task_type != ISCSI_TASK_TYPE_TARGET_WRITE) |
561 | exp_data_transfer_len = task_size; |
562 | |
563 | init_ustorm_task_contexts(ustorm_st_cxt: &task_params->context->ustorm_st_context, |
564 | ustorm_ag_cxt: &task_params->context->ustorm_ag_context, |
565 | remaining_recv_len: task_size, expected_data_transfer_len: exp_data_transfer_len, num_sges, |
566 | tx_dif_conn_err_en: dif_task_params ? |
567 | dif_task_params->tx_dif_conn_err_en : false); |
568 | |
569 | set_rw_exp_data_acked_and_cont_len(context: task_params->context, conn_params, |
570 | task_type, task_size, |
571 | exp_data_transfer_len, |
572 | GET_FIELD(pdu_header->hdr_second_dword, |
573 | ISCSI_CMD_HDR_TOTAL_AHS_LEN)); |
574 | |
575 | if (dif_task_params) |
576 | init_rtdif_task_context(rdif_context: &task_params->context->rdif_context, |
577 | tdif_context: &task_params->context->tdif_context, |
578 | dif_task_params, task_type); |
579 | |
580 | init_sqe(task_params, sgl_task_params, dif_task_params, pdu_header, |
581 | cmd_params, task_type, is_cleanup: false); |
582 | |
583 | return 0; |
584 | } |
585 | |
586 | int init_initiator_rw_iscsi_task(struct iscsi_task_params *task_params, |
587 | struct iscsi_conn_params *conn_params, |
588 | struct scsi_initiator_cmd_params *cmd_params, |
589 | struct iscsi_cmd_hdr *, |
590 | struct scsi_sgl_task_params *tx_sgl_params, |
591 | struct scsi_sgl_task_params *rx_sgl_params, |
592 | struct scsi_dif_task_params *dif_task_params) |
593 | { |
594 | if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_WRITE)) |
595 | return init_rw_iscsi_task(task_params, |
596 | task_type: ISCSI_TASK_TYPE_INITIATOR_WRITE, |
597 | conn_params, |
598 | pdu_header: (struct iscsi_common_hdr *)cmd_header, |
599 | sgl_task_params: tx_sgl_params, cmd_params, |
600 | dif_task_params); |
601 | else if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_READ) || |
602 | (task_params->rx_io_size == 0 && task_params->tx_io_size == 0)) |
603 | return init_rw_iscsi_task(task_params, |
604 | task_type: ISCSI_TASK_TYPE_INITIATOR_READ, |
605 | conn_params, |
606 | pdu_header: (struct iscsi_common_hdr *)cmd_header, |
607 | sgl_task_params: rx_sgl_params, cmd_params, |
608 | dif_task_params); |
609 | else |
610 | return -1; |
611 | } |
612 | |
613 | int init_initiator_login_request_task(struct iscsi_task_params *task_params, |
614 | struct iscsi_login_req_hdr *, |
615 | struct scsi_sgl_task_params *tx_params, |
616 | struct scsi_sgl_task_params *rx_params) |
617 | { |
618 | struct iscsi_task_context *cxt; |
619 | |
620 | cxt = task_params->context; |
621 | |
622 | init_default_iscsi_task(task_params, |
623 | pdu_header: (struct data_hdr *)login_header, |
624 | task_type: ISCSI_TASK_TYPE_MIDPATH); |
625 | |
626 | init_ustorm_task_contexts(ustorm_st_cxt: &cxt->ustorm_st_context, |
627 | ustorm_ag_cxt: &cxt->ustorm_ag_context, |
628 | remaining_recv_len: task_params->rx_io_size ? |
629 | rx_params->total_buffer_size : 0, |
630 | expected_data_transfer_len: task_params->tx_io_size ? |
631 | tx_params->total_buffer_size : 0, num_sges: 0, |
632 | tx_dif_conn_err_en: 0); |
633 | |
634 | if (task_params->tx_io_size) |
635 | init_scsi_sgl_context(ctx_sgl_params: &cxt->ystorm_st_context.state.sgl_params, |
636 | ctx_data_desc: &cxt->ystorm_st_context.state.data_desc, |
637 | sgl_task_params: tx_params); |
638 | |
639 | if (task_params->rx_io_size) |
640 | init_scsi_sgl_context(ctx_sgl_params: &cxt->mstorm_st_context.sgl_params, |
641 | ctx_data_desc: &cxt->mstorm_st_context.data_desc, |
642 | sgl_task_params: rx_params); |
643 | |
644 | cxt->mstorm_st_context.rem_task_size = |
645 | cpu_to_le32(task_params->rx_io_size ? |
646 | rx_params->total_buffer_size : 0); |
647 | |
648 | init_sqe(task_params, sgl_task_params: tx_params, NULL, |
649 | pdu_header: (struct iscsi_common_hdr *)login_header, NULL, |
650 | task_type: ISCSI_TASK_TYPE_MIDPATH, is_cleanup: false); |
651 | |
652 | return 0; |
653 | } |
654 | |
655 | int init_initiator_nop_out_task(struct iscsi_task_params *task_params, |
656 | struct iscsi_nop_out_hdr *, |
657 | struct scsi_sgl_task_params *tx_sgl_task_params, |
658 | struct scsi_sgl_task_params *rx_sgl_task_params) |
659 | { |
660 | struct iscsi_task_context *cxt; |
661 | |
662 | cxt = task_params->context; |
663 | |
664 | init_default_iscsi_task(task_params, |
665 | pdu_header: (struct data_hdr *)nop_out_pdu_header, |
666 | task_type: ISCSI_TASK_TYPE_MIDPATH); |
667 | |
668 | if (nop_out_pdu_header->itt == ISCSI_ITT_ALL_ONES) |
669 | set_local_completion_context(task_params->context); |
670 | |
671 | if (task_params->tx_io_size) |
672 | init_scsi_sgl_context(ctx_sgl_params: &cxt->ystorm_st_context.state.sgl_params, |
673 | ctx_data_desc: &cxt->ystorm_st_context.state.data_desc, |
674 | sgl_task_params: tx_sgl_task_params); |
675 | |
676 | if (task_params->rx_io_size) |
677 | init_scsi_sgl_context(ctx_sgl_params: &cxt->mstorm_st_context.sgl_params, |
678 | ctx_data_desc: &cxt->mstorm_st_context.data_desc, |
679 | sgl_task_params: rx_sgl_task_params); |
680 | |
681 | init_ustorm_task_contexts(ustorm_st_cxt: &cxt->ustorm_st_context, |
682 | ustorm_ag_cxt: &cxt->ustorm_ag_context, |
683 | remaining_recv_len: task_params->rx_io_size ? |
684 | rx_sgl_task_params->total_buffer_size : 0, |
685 | expected_data_transfer_len: task_params->tx_io_size ? |
686 | tx_sgl_task_params->total_buffer_size : 0, |
687 | num_sges: 0, tx_dif_conn_err_en: 0); |
688 | |
689 | cxt->mstorm_st_context.rem_task_size = |
690 | cpu_to_le32(task_params->rx_io_size ? |
691 | rx_sgl_task_params->total_buffer_size : |
692 | 0); |
693 | |
694 | init_sqe(task_params, sgl_task_params: tx_sgl_task_params, NULL, |
695 | pdu_header: (struct iscsi_common_hdr *)nop_out_pdu_header, NULL, |
696 | task_type: ISCSI_TASK_TYPE_MIDPATH, is_cleanup: false); |
697 | |
698 | return 0; |
699 | } |
700 | |
701 | int init_initiator_logout_request_task(struct iscsi_task_params *task_params, |
702 | struct iscsi_logout_req_hdr *logout_hdr, |
703 | struct scsi_sgl_task_params *tx_params, |
704 | struct scsi_sgl_task_params *rx_params) |
705 | { |
706 | struct iscsi_task_context *cxt; |
707 | |
708 | cxt = task_params->context; |
709 | |
710 | init_default_iscsi_task(task_params, |
711 | pdu_header: (struct data_hdr *)logout_hdr, |
712 | task_type: ISCSI_TASK_TYPE_MIDPATH); |
713 | |
714 | if (task_params->tx_io_size) |
715 | init_scsi_sgl_context(ctx_sgl_params: &cxt->ystorm_st_context.state.sgl_params, |
716 | ctx_data_desc: &cxt->ystorm_st_context.state.data_desc, |
717 | sgl_task_params: tx_params); |
718 | |
719 | if (task_params->rx_io_size) |
720 | init_scsi_sgl_context(ctx_sgl_params: &cxt->mstorm_st_context.sgl_params, |
721 | ctx_data_desc: &cxt->mstorm_st_context.data_desc, |
722 | sgl_task_params: rx_params); |
723 | |
724 | init_ustorm_task_contexts(ustorm_st_cxt: &cxt->ustorm_st_context, |
725 | ustorm_ag_cxt: &cxt->ustorm_ag_context, |
726 | remaining_recv_len: task_params->rx_io_size ? |
727 | rx_params->total_buffer_size : 0, |
728 | expected_data_transfer_len: task_params->tx_io_size ? |
729 | tx_params->total_buffer_size : 0, |
730 | num_sges: 0, tx_dif_conn_err_en: 0); |
731 | |
732 | cxt->mstorm_st_context.rem_task_size = |
733 | cpu_to_le32(task_params->rx_io_size ? |
734 | rx_params->total_buffer_size : 0); |
735 | |
736 | init_sqe(task_params, sgl_task_params: tx_params, NULL, |
737 | pdu_header: (struct iscsi_common_hdr *)logout_hdr, NULL, |
738 | task_type: ISCSI_TASK_TYPE_MIDPATH, is_cleanup: false); |
739 | |
740 | return 0; |
741 | } |
742 | |
743 | int init_initiator_tmf_request_task(struct iscsi_task_params *task_params, |
744 | struct iscsi_tmf_request_hdr *) |
745 | { |
746 | init_default_iscsi_task(task_params, pdu_header: (struct data_hdr *)tmf_header, |
747 | task_type: ISCSI_TASK_TYPE_MIDPATH); |
748 | |
749 | init_sqe(task_params, NULL, NULL, |
750 | pdu_header: (struct iscsi_common_hdr *)tmf_header, NULL, |
751 | task_type: ISCSI_TASK_TYPE_MIDPATH, is_cleanup: false); |
752 | |
753 | return 0; |
754 | } |
755 | |
756 | int init_initiator_text_request_task(struct iscsi_task_params *task_params, |
757 | struct iscsi_text_request_hdr *, |
758 | struct scsi_sgl_task_params *tx_params, |
759 | struct scsi_sgl_task_params *rx_params) |
760 | { |
761 | struct iscsi_task_context *cxt; |
762 | |
763 | cxt = task_params->context; |
764 | |
765 | init_default_iscsi_task(task_params, |
766 | pdu_header: (struct data_hdr *)text_header, |
767 | task_type: ISCSI_TASK_TYPE_MIDPATH); |
768 | |
769 | if (task_params->tx_io_size) |
770 | init_scsi_sgl_context(ctx_sgl_params: &cxt->ystorm_st_context.state.sgl_params, |
771 | ctx_data_desc: &cxt->ystorm_st_context.state.data_desc, |
772 | sgl_task_params: tx_params); |
773 | |
774 | if (task_params->rx_io_size) |
775 | init_scsi_sgl_context(ctx_sgl_params: &cxt->mstorm_st_context.sgl_params, |
776 | ctx_data_desc: &cxt->mstorm_st_context.data_desc, |
777 | sgl_task_params: rx_params); |
778 | |
779 | cxt->mstorm_st_context.rem_task_size = |
780 | cpu_to_le32(task_params->rx_io_size ? |
781 | rx_params->total_buffer_size : 0); |
782 | |
783 | init_ustorm_task_contexts(ustorm_st_cxt: &cxt->ustorm_st_context, |
784 | ustorm_ag_cxt: &cxt->ustorm_ag_context, |
785 | remaining_recv_len: task_params->rx_io_size ? |
786 | rx_params->total_buffer_size : 0, |
787 | expected_data_transfer_len: task_params->tx_io_size ? |
788 | tx_params->total_buffer_size : 0, num_sges: 0, tx_dif_conn_err_en: 0); |
789 | |
790 | init_sqe(task_params, sgl_task_params: tx_params, NULL, |
791 | pdu_header: (struct iscsi_common_hdr *)text_header, NULL, |
792 | task_type: ISCSI_TASK_TYPE_MIDPATH, is_cleanup: false); |
793 | |
794 | return 0; |
795 | } |
796 | |
797 | int init_cleanup_task(struct iscsi_task_params *task_params) |
798 | { |
799 | init_sqe(task_params, NULL, NULL, NULL, NULL, task_type: ISCSI_TASK_TYPE_MIDPATH, |
800 | is_cleanup: true); |
801 | return 0; |
802 | } |
803 | |