1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
4 * Copyright (C) 2004 - 2005 Leonid Stoljar
5 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
6 * Copyright (C) 2007 - 2010 ID7 Ltd.
7 *
8 * Forward port and refactoring to modern qla2xxx and target/configfs
9 *
10 * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
11 *
12 * Additional file for the target driver support.
13 */
14 /*
15 * This is the global def file that is useful for including from the
16 * target portion.
17 */
18
19 #ifndef __QLA_TARGET_H
20 #define __QLA_TARGET_H
21
22 #include "qla_def.h"
23 #include "qla_dsd.h"
24
25 /*
26 * Must be changed on any change in any initiator visible interfaces or
27 * data in the target add-on
28 */
29 #define QLA2XXX_TARGET_MAGIC 269
30
31 /*
32 * Must be changed on any change in any target visible interfaces or
33 * data in the initiator
34 */
35 #define QLA2XXX_INITIATOR_MAGIC 57222
36
37 #define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
38 #define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
39 #define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
40 #define QLA2XXX_INI_MODE_STR_DUAL "dual"
41
42 #define QLA2XXX_INI_MODE_EXCLUSIVE 0
43 #define QLA2XXX_INI_MODE_DISABLED 1
44 #define QLA2XXX_INI_MODE_ENABLED 2
45 #define QLA2XXX_INI_MODE_DUAL 3
46
47 #define QLA2XXX_COMMAND_COUNT_INIT 250
48 #define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
49
50 /*
51 * Used to mark which completion handles (for RIO Status's) are for CTIO's
52 * vs. regular (non-target) info. This is checked for in
53 * qla2x00_process_response_queue() to see if a handle coming back in a
54 * multi-complete should come to the tgt driver or be handled there by qla2xxx
55 */
56 #define CTIO_COMPLETION_HANDLE_MARK BIT_29
57 #if (CTIO_COMPLETION_HANDLE_MARK <= DEFAULT_OUTSTANDING_COMMANDS)
58 #error "CTIO_COMPLETION_HANDLE_MARK not larger than "
59 "DEFAULT_OUTSTANDING_COMMANDS"
60 #endif
61 #define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)
62
63 /* Used to mark CTIO as intermediate */
64 #define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30
65 #define QLA_TGT_NULL_HANDLE 0
66
67 #define QLA_TGT_HANDLE_MASK 0xF0000000
68 #define QLA_QPID_HANDLE_MASK 0x00FF0000 /* qpair id mask */
69 #define QLA_CMD_HANDLE_MASK 0x0000FFFF
70 #define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~QLA_TGT_HANDLE_MASK)
71
72 #define QLA_QPID_HANDLE_SHIFT 16
73 #define GET_QID(_h) ((_h & QLA_QPID_HANDLE_MASK) >> QLA_QPID_HANDLE_SHIFT)
74
75
76 #ifndef OF_SS_MODE_0
77 /*
78 * ISP target entries - Flags bit definitions.
79 */
80 #define OF_SS_MODE_0 0
81 #define OF_SS_MODE_1 1
82 #define OF_SS_MODE_2 2
83 #define OF_SS_MODE_3 3
84
85 #define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */
86 #define OF_DATA_IN BIT_6 /* Data in to initiator */
87 /* (data from target to initiator) */
88 #define OF_DATA_OUT BIT_7 /* Data out from initiator */
89 /* (data from initiator to target) */
90 #define OF_NO_DATA (BIT_7 | BIT_6)
91 #define OF_INC_RC BIT_8 /* Increment command resource count */
92 #define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */
93 #define OF_CONF_REQ BIT_13 /* Confirmation Requested */
94 #define OF_TERM_EXCH BIT_14 /* Terminate exchange */
95 #define OF_SSTS BIT_15 /* Send SCSI status */
96 #endif
97
98 #ifndef QLA_TGT_DATASEGS_PER_CMD32
99 #define QLA_TGT_DATASEGS_PER_CMD32 3
100 #define QLA_TGT_DATASEGS_PER_CONT32 7
101 #define QLA_TGT_MAX_SG32(ql) \
102 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \
103 QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0)
104
105 #define QLA_TGT_DATASEGS_PER_CMD64 2
106 #define QLA_TGT_DATASEGS_PER_CONT64 5
107 #define QLA_TGT_MAX_SG64(ql) \
108 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \
109 QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0)
110 #endif
111
112 #ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
113 #define QLA_TGT_DATASEGS_PER_CMD_24XX 1
114 #define QLA_TGT_DATASEGS_PER_CONT_24XX 5
115 #define QLA_TGT_MAX_SG_24XX(ql) \
116 (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \
117 QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
118 #endif
119
120 #define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \
121 ? le16_to_cpu((iocb)->u.isp2x.target.extended) \
122 : (uint16_t)(iocb)->u.isp2x.target.id.standard)
123
124 #ifndef NOTIFY_ACK_TYPE
125 #define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */
126 /*
127 * ISP queue - notify acknowledge entry structure definition.
128 * This is sent to the ISP from the target driver.
129 */
130 struct nack_to_isp {
131 uint8_t entry_type; /* Entry type. */
132 uint8_t entry_count; /* Entry count. */
133 uint8_t sys_define; /* System defined. */
134 uint8_t entry_status; /* Entry Status. */
135 union {
136 struct {
137 __le32 sys_define_2; /* System defined. */
138 target_id_t target;
139 uint8_t target_id;
140 uint8_t reserved_1;
141 __le16 flags;
142 __le16 resp_code;
143 __le16 status;
144 __le16 task_flags;
145 __le16 seq_id;
146 __le16 srr_rx_id;
147 __le32 srr_rel_offs;
148 __le16 srr_ui;
149 __le16 srr_flags;
150 __le16 srr_reject_code;
151 uint8_t srr_reject_vendor_uniq;
152 uint8_t srr_reject_code_expl;
153 uint8_t reserved_2[24];
154 } isp2x;
155 struct {
156 uint32_t handle;
157 __le16 nport_handle;
158 uint16_t reserved_1;
159 __le16 flags;
160 __le16 srr_rx_id;
161 __le16 status;
162 uint8_t status_subcode;
163 uint8_t fw_handle;
164 __le32 exchange_address;
165 __le32 srr_rel_offs;
166 __le16 srr_ui;
167 __le16 srr_flags;
168 uint8_t reserved_4[19];
169 uint8_t vp_index;
170 uint8_t srr_reject_vendor_uniq;
171 uint8_t srr_reject_code_expl;
172 uint8_t srr_reject_code;
173 uint8_t reserved_5[5];
174 } isp24;
175 } u;
176 uint8_t reserved[2];
177 __le16 ox_id;
178 } __packed;
179 #define NOTIFY_ACK_FLAGS_TERMINATE BIT_3
180 #define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0
181 #define NOTIFY_ACK_SRR_FLAGS_REJECT 1
182
183 #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9
184
185 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0
186 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a
187
188 #define NOTIFY_ACK_SUCCESS 0x01
189 #endif
190
191 #ifndef ACCEPT_TGT_IO_TYPE
192 #define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
193 #endif
194
195 #ifndef CONTINUE_TGT_IO_TYPE
196 #define CONTINUE_TGT_IO_TYPE 0x17
197 /*
198 * ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure.
199 * This structure is sent to the ISP 2xxx from target driver.
200 */
201 struct ctio_to_2xxx {
202 uint8_t entry_type; /* Entry type. */
203 uint8_t entry_count; /* Entry count. */
204 uint8_t sys_define; /* System defined. */
205 uint8_t entry_status; /* Entry Status. */
206 uint32_t handle; /* System defined handle */
207 target_id_t target;
208 __le16 rx_id;
209 __le16 flags;
210 __le16 status;
211 __le16 timeout; /* 0 = 30 seconds, 0xFFFF = disable */
212 __le16 dseg_count; /* Data segment count. */
213 __le32 relative_offset;
214 __le32 residual;
215 __le16 reserved_1[3];
216 __le16 scsi_status;
217 __le32 transfer_length;
218 struct dsd32 dsd[3];
219 } __packed;
220 #define ATIO_PATH_INVALID 0x07
221 #define ATIO_CANT_PROV_CAP 0x16
222 #define ATIO_CDB_VALID 0x3D
223
224 #define ATIO_EXEC_READ BIT_1
225 #define ATIO_EXEC_WRITE BIT_0
226 #endif
227
228 #ifndef CTIO_A64_TYPE
229 #define CTIO_A64_TYPE 0x1F
230 #define CTIO_SUCCESS 0x01
231 #define CTIO_ABORTED 0x02
232 #define CTIO_INVALID_RX_ID 0x08
233 #define CTIO_TIMEOUT 0x0B
234 #define CTIO_DIF_ERROR 0x0C /* DIF error detected */
235 #define CTIO_LIP_RESET 0x0E
236 #define CTIO_TARGET_RESET 0x17
237 #define CTIO_PORT_UNAVAILABLE 0x28
238 #define CTIO_PORT_LOGGED_OUT 0x29
239 #define CTIO_PORT_CONF_CHANGED 0x2A
240 #define CTIO_SRR_RECEIVED 0x45
241 #endif
242
243 #ifndef CTIO_RET_TYPE
244 #define CTIO_RET_TYPE 0x17 /* CTIO return entry */
245 #define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */
246 #endif
247
248 struct fcp_hdr {
249 uint8_t r_ctl;
250 be_id_t d_id;
251 uint8_t cs_ctl;
252 be_id_t s_id;
253 uint8_t type;
254 uint8_t f_ctl[3];
255 uint8_t seq_id;
256 uint8_t df_ctl;
257 uint16_t seq_cnt;
258 __be16 ox_id;
259 uint16_t rx_id;
260 __le32 parameter;
261 };
262
263 struct fcp_hdr_le {
264 le_id_t d_id;
265 uint8_t r_ctl;
266 le_id_t s_id;
267 uint8_t cs_ctl;
268 uint8_t f_ctl[3];
269 uint8_t type;
270 __le16 seq_cnt;
271 uint8_t df_ctl;
272 uint8_t seq_id;
273 __le16 rx_id;
274 __le16 ox_id;
275 __le32 parameter;
276 };
277
278 #define F_CTL_EXCH_CONTEXT_RESP BIT_23
279 #define F_CTL_SEQ_CONTEXT_RESIP BIT_22
280 #define F_CTL_LAST_SEQ BIT_20
281 #define F_CTL_END_SEQ BIT_19
282 #define F_CTL_SEQ_INITIATIVE BIT_16
283
284 #define R_CTL_BASIC_LINK_SERV 0x80
285 #define R_CTL_B_ACC 0x4
286 #define R_CTL_B_RJT 0x5
287
288 struct atio7_fcp_cmnd {
289 uint64_t lun;
290 uint8_t cmnd_ref;
291 uint8_t task_attr:3;
292 uint8_t reserved:5;
293 uint8_t task_mgmt_flags;
294 #define FCP_CMND_TASK_MGMT_CLEAR_ACA 6
295 #define FCP_CMND_TASK_MGMT_TARGET_RESET 5
296 #define FCP_CMND_TASK_MGMT_LU_RESET 4
297 #define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2
298 #define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1
299 uint8_t wrdata:1;
300 uint8_t rddata:1;
301 uint8_t add_cdb_len:6;
302 uint8_t cdb[16];
303 /*
304 * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4
305 * only to make sizeof(struct atio7_fcp_cmnd) be as expected by
306 * BUILD_BUG_ON in qlt_init().
307 */
308 uint8_t add_cdb[4];
309 /* __le32 data_length; */
310 } __packed;
311
312 /*
313 * ISP queue - Accept Target I/O (ATIO) type entry IOCB structure.
314 * This is sent from the ISP to the target driver.
315 */
316 struct atio_from_isp {
317 union {
318 struct {
319 __le16 entry_hdr;
320 uint8_t sys_define; /* System defined. */
321 uint8_t entry_status; /* Entry Status. */
322 __le32 sys_define_2; /* System defined. */
323 target_id_t target;
324 __le16 rx_id;
325 __le16 flags;
326 __le16 status;
327 uint8_t command_ref;
328 uint8_t task_codes;
329 uint8_t task_flags;
330 uint8_t execution_codes;
331 uint8_t cdb[MAX_CMDSZ];
332 __le32 data_length;
333 __le16 lun;
334 uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */
335 __le16 reserved_32[6];
336 __le16 ox_id;
337 } isp2x;
338 struct {
339 __le16 entry_hdr;
340 uint8_t fcp_cmnd_len_low;
341 uint8_t fcp_cmnd_len_high:4;
342 uint8_t attr:4;
343 __le32 exchange_addr;
344 #define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF
345 struct fcp_hdr fcp_hdr;
346 struct atio7_fcp_cmnd fcp_cmnd;
347 } isp24;
348 struct {
349 uint8_t entry_type; /* Entry type. */
350 uint8_t entry_count; /* Entry count. */
351 __le16 attr_n_length;
352 #define FCP_CMD_LENGTH_MASK 0x0fff
353 #define FCP_CMD_LENGTH_MIN 0x38
354 uint8_t data[56];
355 __le32 signature;
356 #define ATIO_PROCESSED 0xDEADDEAD /* Signature */
357 } raw;
358 } u;
359 } __packed;
360
fcpcmd_is_corrupted(struct atio * atio)361 static inline int fcpcmd_is_corrupted(struct atio *atio)
362 {
363 if (atio->entry_type == ATIO_TYPE7 &&
364 ((le16_to_cpu(atio->attr_n_length) & FCP_CMD_LENGTH_MASK) <
365 FCP_CMD_LENGTH_MIN))
366 return 1;
367 else
368 return 0;
369 }
370
371 /* adjust corrupted atio so we won't trip over the same entry again. */
adjust_corrupted_atio(struct atio_from_isp * atio)372 static inline void adjust_corrupted_atio(struct atio_from_isp *atio)
373 {
374 atio->u.raw.attr_n_length = cpu_to_le16(FCP_CMD_LENGTH_MIN);
375 atio->u.isp24.fcp_cmnd.add_cdb_len = 0;
376 }
377
get_datalen_for_atio(struct atio_from_isp * atio)378 static inline int get_datalen_for_atio(struct atio_from_isp *atio)
379 {
380 int len = atio->u.isp24.fcp_cmnd.add_cdb_len;
381
382 return get_unaligned_be32(&atio->u.isp24.fcp_cmnd.add_cdb[len * 4]);
383 }
384
385 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
386
387 /*
388 * ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure.
389 * This structure is sent to the ISP 24xx from the target driver.
390 */
391
392 struct ctio7_to_24xx {
393 uint8_t entry_type; /* Entry type. */
394 uint8_t entry_count; /* Entry count. */
395 uint8_t sys_define; /* System defined. */
396 uint8_t entry_status; /* Entry Status. */
397 uint32_t handle; /* System defined handle */
398 __le16 nport_handle;
399 #define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF
400 __le16 timeout;
401 __le16 dseg_count; /* Data segment count. */
402 uint8_t vp_index;
403 uint8_t add_flags;
404 le_id_t initiator_id;
405 uint8_t reserved;
406 __le32 exchange_addr;
407 union {
408 struct {
409 __le16 reserved1;
410 __le16 flags;
411 __le32 residual;
412 __le16 ox_id;
413 __le16 scsi_status;
414 __le32 relative_offset;
415 __le32 reserved2;
416 __le32 transfer_length;
417 __le32 reserved3;
418 struct dsd64 dsd;
419 } status0;
420 struct {
421 __le16 sense_length;
422 __le16 flags;
423 __le32 residual;
424 __le16 ox_id;
425 __le16 scsi_status;
426 __le16 response_len;
427 __le16 reserved;
428 uint8_t sense_data[24];
429 } status1;
430 } u;
431 } __packed;
432
433 /*
434 * ISP queue - CTIO type 7 from ISP 24xx to target driver
435 * returned entry structure.
436 */
437 struct ctio7_from_24xx {
438 uint8_t entry_type; /* Entry type. */
439 uint8_t entry_count; /* Entry count. */
440 uint8_t sys_define; /* System defined. */
441 uint8_t entry_status; /* Entry Status. */
442 uint32_t handle; /* System defined handle */
443 __le16 status;
444 __le16 timeout;
445 __le16 dseg_count; /* Data segment count. */
446 uint8_t vp_index;
447 uint8_t reserved1[5];
448 __le32 exchange_address;
449 __le16 reserved2;
450 __le16 flags;
451 __le32 residual;
452 __le16 ox_id;
453 __le16 reserved3;
454 __le32 relative_offset;
455 uint8_t reserved4[24];
456 } __packed;
457
458 /* CTIO7 flags values */
459 #define CTIO7_FLAGS_SEND_STATUS BIT_15
460 #define CTIO7_FLAGS_TERMINATE BIT_14
461 #define CTIO7_FLAGS_CONFORM_REQ BIT_13
462 #define CTIO7_FLAGS_DONT_RET_CTIO BIT_8
463 #define CTIO7_FLAGS_STATUS_MODE_0 0
464 #define CTIO7_FLAGS_STATUS_MODE_1 BIT_6
465 #define CTIO7_FLAGS_STATUS_MODE_2 BIT_7
466 #define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5
467 #define CTIO7_FLAGS_CONFIRM_SATISF BIT_4
468 #define CTIO7_FLAGS_DSD_PTR BIT_2
469 #define CTIO7_FLAGS_DATA_IN BIT_1 /* data to initiator */
470 #define CTIO7_FLAGS_DATA_OUT BIT_0 /* data from initiator */
471
472 #define ELS_PLOGI 0x3
473 #define ELS_FLOGI 0x4
474 #define ELS_LOGO 0x5
475 #define ELS_PRLI 0x20
476 #define ELS_PRLO 0x21
477 #define ELS_TPRLO 0x24
478 #define ELS_PDISC 0x50
479 #define ELS_ADISC 0x52
480
481 /*
482 *CTIO Type CRC_2 IOCB
483 */
484 struct ctio_crc2_to_fw {
485 uint8_t entry_type; /* Entry type. */
486 #define CTIO_CRC2 0x7A
487 uint8_t entry_count; /* Entry count. */
488 uint8_t sys_define; /* System defined. */
489 uint8_t entry_status; /* Entry Status. */
490
491 uint32_t handle; /* System handle. */
492 __le16 nport_handle; /* N_PORT handle. */
493 __le16 timeout; /* Command timeout. */
494
495 __le16 dseg_count; /* Data segment count. */
496 uint8_t vp_index;
497 uint8_t add_flags; /* additional flags */
498 #define CTIO_CRC2_AF_DIF_DSD_ENA BIT_3
499
500 le_id_t initiator_id; /* initiator ID */
501 uint8_t reserved1;
502 __le32 exchange_addr; /* rcv exchange address */
503 __le16 reserved2;
504 __le16 flags; /* refer to CTIO7 flags values */
505 __le32 residual;
506 __le16 ox_id;
507 __le16 scsi_status;
508 __le32 relative_offset;
509 __le32 reserved5;
510 __le32 transfer_length; /* total fc transfer length */
511 __le32 reserved6;
512 __le64 crc_context_address __packed; /* Data segment address. */
513 __le16 crc_context_len; /* Data segment length. */
514 __le16 reserved_1; /* MUST be set to 0. */
515 };
516
517 /* CTIO Type CRC_x Status IOCB */
518 struct ctio_crc_from_fw {
519 uint8_t entry_type; /* Entry type. */
520 uint8_t entry_count; /* Entry count. */
521 uint8_t sys_define; /* System defined. */
522 uint8_t entry_status; /* Entry Status. */
523
524 uint32_t handle; /* System handle. */
525 __le16 status;
526 __le16 timeout; /* Command timeout. */
527 __le16 dseg_count; /* Data segment count. */
528 __le32 reserved1;
529 __le16 state_flags;
530 #define CTIO_CRC_SF_DIF_CHOPPED BIT_4
531
532 __le32 exchange_address; /* rcv exchange address */
533 __le16 reserved2;
534 __le16 flags;
535 __le32 resid_xfer_length;
536 __le16 ox_id;
537 uint8_t reserved3[12];
538 __le16 runt_guard; /* reported runt blk guard */
539 uint8_t actual_dif[8];
540 uint8_t expected_dif[8];
541 } __packed;
542
543 /*
544 * ISP queue - ABTS received/response entries structure definition for 24xx.
545 */
546 #define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */
547 #define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */
548
549 /*
550 * ISP queue - ABTS received IOCB entry structure definition for 24xx.
551 * The ABTS BLS received from the wire is sent to the
552 * target driver by the ISP 24xx.
553 * The IOCB is placed on the response queue.
554 */
555 struct abts_recv_from_24xx {
556 uint8_t entry_type; /* Entry type. */
557 uint8_t entry_count; /* Entry count. */
558 uint8_t sys_define; /* System defined. */
559 uint8_t entry_status; /* Entry Status. */
560 uint8_t reserved_1[6];
561 __le16 nport_handle;
562 uint8_t reserved_2[2];
563 uint8_t vp_index;
564 uint8_t reserved_3:4;
565 uint8_t sof_type:4;
566 __le32 exchange_address;
567 struct fcp_hdr_le fcp_hdr_le;
568 uint8_t reserved_4[16];
569 __le32 exchange_addr_to_abort;
570 } __packed;
571
572 #define ABTS_PARAM_ABORT_SEQ BIT_0
573
574 struct ba_acc_le {
575 __le16 reserved;
576 uint8_t seq_id_last;
577 uint8_t seq_id_valid;
578 #define SEQ_ID_VALID 0x80
579 #define SEQ_ID_INVALID 0x00
580 __le16 rx_id;
581 __le16 ox_id;
582 __le16 high_seq_cnt;
583 __le16 low_seq_cnt;
584 } __packed;
585
586 struct ba_rjt_le {
587 uint8_t vendor_uniq;
588 uint8_t reason_expl;
589 uint8_t reason_code;
590 #define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1
591 #define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9
592 uint8_t reserved;
593 } __packed;
594
595 /*
596 * ISP queue - ABTS Response IOCB entry structure definition for 24xx.
597 * The ABTS response to the ABTS received is sent by the
598 * target driver to the ISP 24xx.
599 * The IOCB is placed on the request queue.
600 */
601 struct abts_resp_to_24xx {
602 uint8_t entry_type; /* Entry type. */
603 uint8_t entry_count; /* Entry count. */
604 uint8_t sys_define; /* System defined. */
605 uint8_t entry_status; /* Entry Status. */
606 uint32_t handle;
607 __le16 reserved_1;
608 __le16 nport_handle;
609 __le16 control_flags;
610 #define ABTS_CONTR_FLG_TERM_EXCHG BIT_0
611 uint8_t vp_index;
612 uint8_t reserved_3:4;
613 uint8_t sof_type:4;
614 __le32 exchange_address;
615 struct fcp_hdr_le fcp_hdr_le;
616 union {
617 struct ba_acc_le ba_acct;
618 struct ba_rjt_le ba_rjt;
619 } __packed payload;
620 __le32 reserved_4;
621 __le32 exchange_addr_to_abort;
622 } __packed;
623
624 /*
625 * ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure.
626 * The ABTS response with completion status to the ABTS response
627 * (sent by the target driver to the ISP 24xx) is sent by the
628 * ISP24xx firmware to the target driver.
629 * The IOCB is placed on the response queue.
630 */
631 struct abts_resp_from_24xx_fw {
632 uint8_t entry_type; /* Entry type. */
633 uint8_t entry_count; /* Entry count. */
634 uint8_t sys_define; /* System defined. */
635 uint8_t entry_status; /* Entry Status. */
636 uint32_t handle;
637 __le16 compl_status;
638 #define ABTS_RESP_COMPL_SUCCESS 0
639 #define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31
640 __le16 nport_handle;
641 __le16 reserved_1;
642 uint8_t reserved_2;
643 uint8_t reserved_3:4;
644 uint8_t sof_type:4;
645 __le32 exchange_address;
646 struct fcp_hdr_le fcp_hdr_le;
647 uint8_t reserved_4[8];
648 __le32 error_subcode1;
649 #define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E
650 __le32 error_subcode2;
651 __le32 exchange_addr_to_abort;
652 } __packed;
653
654 /********************************************************************\
655 * Type Definitions used by initiator & target halves
656 \********************************************************************/
657
658 struct qla_tgt_mgmt_cmd;
659 struct fc_port;
660 struct qla_tgt_cmd;
661
662 /*
663 * This structure provides a template of function calls that the
664 * target driver (from within qla_target.c) can issue to the
665 * target module (tcm_qla2xxx).
666 */
667 struct qla_tgt_func_tmpl {
668 struct qla_tgt_cmd *(*find_cmd_by_tag)(struct fc_port *, uint64_t);
669 int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
670 unsigned char *, uint32_t, int, int, int);
671 void (*handle_data)(struct qla_tgt_cmd *);
672 int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, u64, uint16_t,
673 uint32_t);
674 struct qla_tgt_cmd *(*get_cmd)(struct fc_port *);
675 void (*rel_cmd)(struct qla_tgt_cmd *);
676 void (*free_cmd)(struct qla_tgt_cmd *);
677 void (*free_mcmd)(struct qla_tgt_mgmt_cmd *);
678 void (*free_session)(struct fc_port *);
679
680 int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
681 struct fc_port *);
682 void (*update_sess)(struct fc_port *, port_id_t, uint16_t, bool);
683 struct fc_port *(*find_sess_by_loop_id)(struct scsi_qla_host *,
684 const uint16_t);
685 struct fc_port *(*find_sess_by_s_id)(struct scsi_qla_host *,
686 const be_id_t);
687 void (*clear_nacl_from_fcport_map)(struct fc_port *);
688 void (*put_sess)(struct fc_port *);
689 void (*shutdown_sess)(struct fc_port *);
690 int (*get_dif_tags)(struct qla_tgt_cmd *cmd, uint16_t *pfw_prot_opts);
691 int (*chk_dif_tags)(uint32_t tag);
692 void (*add_target)(struct scsi_qla_host *);
693 void (*remove_target)(struct scsi_qla_host *);
694 };
695
696 int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
697
698 #include <target/target_core_base.h>
699
700 #define QLA_TGT_TIMEOUT 10 /* in seconds */
701
702 #define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */
703
704 /* Immediate notify status constants */
705 #define IMM_NTFY_LIP_RESET 0x000E
706 #define IMM_NTFY_LIP_LINK_REINIT 0x000F
707 #define IMM_NTFY_IOCB_OVERFLOW 0x0016
708 #define IMM_NTFY_ABORT_TASK 0x0020
709 #define IMM_NTFY_PORT_LOGOUT 0x0029
710 #define IMM_NTFY_PORT_CONFIG 0x002A
711 #define IMM_NTFY_GLBL_TPRLO 0x002D
712 #define IMM_NTFY_GLBL_LOGO 0x002E
713 #define IMM_NTFY_RESOURCE 0x0034
714 #define IMM_NTFY_MSG_RX 0x0036
715 #define IMM_NTFY_SRR 0x0045
716 #define IMM_NTFY_ELS 0x0046
717
718 /* Immediate notify task flags */
719 #define IMM_NTFY_TASK_MGMT_SHIFT 8
720
721 #define QLA_TGT_CLEAR_ACA 0x40
722 #define QLA_TGT_TARGET_RESET 0x20
723 #define QLA_TGT_LUN_RESET 0x10
724 #define QLA_TGT_CLEAR_TS 0x04
725 #define QLA_TGT_ABORT_TS 0x02
726 #define QLA_TGT_ABORT_ALL_SESS 0xFFFF
727 #define QLA_TGT_ABORT_ALL 0xFFFE
728 #define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD
729 #define QLA_TGT_NEXUS_LOSS 0xFFFC
730 #define QLA_TGT_ABTS 0xFFFB
731 #define QLA_TGT_2G_ABORT_TASK 0xFFFA
732
733 /* Notify Acknowledge flags */
734 #define NOTIFY_ACK_RES_COUNT BIT_8
735 #define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5
736 #define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4
737
738 /* Command's states */
739 #define QLA_TGT_STATE_NEW 0 /* New command + target processing */
740 #define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */
741 #define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */
742 #define QLA_TGT_STATE_PROCESSED 3 /* target done processing */
743
744 /* ATIO task_codes field */
745 #define ATIO_SIMPLE_QUEUE 0
746 #define ATIO_HEAD_OF_QUEUE 1
747 #define ATIO_ORDERED_QUEUE 2
748 #define ATIO_ACA_QUEUE 4
749 #define ATIO_UNTAGGED 5
750
751 /* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
752 #define FC_TM_SUCCESS 0
753 #define FC_TM_BAD_FCP_DATA 1
754 #define FC_TM_BAD_CMD 2
755 #define FC_TM_FCP_DATA_MISMATCH 3
756 #define FC_TM_REJECT 4
757 #define FC_TM_FAILED 5
758
759 #define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \
760 (((const uint8_t *)(sense))[0] & 0x70) == 0x70)
761
762 struct qla_port_24xx_data {
763 uint8_t port_name[WWN_SIZE];
764 uint16_t loop_id;
765 uint16_t reserved;
766 };
767
768 struct qla_qpair_hint {
769 struct list_head hint_elem;
770 struct qla_qpair *qpair;
771 u16 cpuid;
772 uint8_t cmd_cnt;
773 };
774
775 struct qla_tgt {
776 struct scsi_qla_host *vha;
777 struct qla_hw_data *ha;
778 struct btree_head64 lun_qpair_map;
779 struct qla_qpair_hint *qphints;
780 /*
781 * To sync between IRQ handlers and qlt_target_release(). Needed,
782 * because req_pkt() can drop/reaquire HW lock inside. Protected by
783 * HW lock.
784 */
785 int atio_irq_cmd_count;
786
787 int sg_tablesize;
788
789 /* Target's flags, serialized by pha->hardware_lock */
790 unsigned int link_reinit_iocb_pending:1;
791
792 /*
793 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
794 * OR hardware_lock for reading.
795 */
796 int tgt_stop; /* the target mode driver is being stopped */
797 int tgt_stopped; /* the target mode driver has been stopped */
798
799 /* Count of sessions refering qla_tgt. Protected by hardware_lock. */
800 int sess_count;
801
802 /* Protected by hardware_lock */
803 struct list_head del_sess_list;
804
805 spinlock_t sess_work_lock;
806 struct list_head sess_works_list;
807 struct work_struct sess_work;
808
809 struct imm_ntfy_from_isp link_reinit_iocb;
810 wait_queue_head_t waitQ;
811 int notify_ack_expected;
812 int abts_resp_expected;
813 int modify_lun_expected;
814 atomic_t tgt_global_resets_count;
815 struct list_head tgt_list_entry;
816 };
817
818 struct qla_tgt_sess_op {
819 struct scsi_qla_host *vha;
820 uint32_t chip_reset;
821 struct atio_from_isp atio;
822 struct work_struct work;
823 struct list_head cmd_list;
824 bool aborted;
825 struct rsp_que *rsp;
826 };
827
828 enum trace_flags {
829 TRC_NEW_CMD = BIT_0,
830 TRC_DO_WORK = BIT_1,
831 TRC_DO_WORK_ERR = BIT_2,
832 TRC_XFR_RDY = BIT_3,
833 TRC_XMIT_DATA = BIT_4,
834 TRC_XMIT_STATUS = BIT_5,
835 TRC_SRR_RSP = BIT_6,
836 TRC_SRR_XRDY = BIT_7,
837 TRC_SRR_TERM = BIT_8,
838 TRC_SRR_CTIO = BIT_9,
839 TRC_FLUSH = BIT_10,
840 TRC_CTIO_ERR = BIT_11,
841 TRC_CTIO_DONE = BIT_12,
842 TRC_CTIO_ABORTED = BIT_13,
843 TRC_CTIO_STRANGE = BIT_14,
844 TRC_CMD_DONE = BIT_15,
845 TRC_CMD_CHK_STOP = BIT_16,
846 TRC_CMD_FREE = BIT_17,
847 TRC_DATA_IN = BIT_18,
848 TRC_ABORT = BIT_19,
849 TRC_DIF_ERR = BIT_20,
850 };
851
852 struct qla_tgt_cmd {
853 /*
854 * Do not move cmd_type field. it needs to line up with srb->cmd_type
855 */
856 uint8_t cmd_type;
857 uint8_t pad[7];
858 struct se_cmd se_cmd;
859 struct fc_port *sess;
860 struct qla_qpair *qpair;
861 uint32_t reset_count;
862 int state;
863 struct work_struct work;
864 /* Sense buffer that will be mapped into outgoing status */
865 unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
866
867 spinlock_t cmd_lock;
868 /* to save extra sess dereferences */
869 unsigned int conf_compl_supported:1;
870 unsigned int sg_mapped:1;
871 unsigned int free_sg:1;
872 unsigned int write_data_transferred:1;
873 unsigned int q_full:1;
874 unsigned int term_exchg:1;
875 unsigned int cmd_sent_to_fw:1;
876 unsigned int cmd_in_wq:1;
877
878 /*
879 * This variable may be set from outside the LIO and I/O completion
880 * callback functions. Do not declare this member variable as a
881 * bitfield to avoid a read-modify-write operation when this variable
882 * is set.
883 */
884 unsigned int aborted;
885
886 struct scatterlist *sg; /* cmd data buffer SG vector */
887 int sg_cnt; /* SG segments count */
888 int bufflen; /* cmd buffer length */
889 int offset;
890 u64 unpacked_lun;
891 enum dma_data_direction dma_data_direction;
892
893 uint16_t ctio_flags;
894 uint16_t vp_idx;
895 uint16_t loop_id; /* to save extra sess dereferences */
896 struct qla_tgt *tgt; /* to save extra sess dereferences */
897 struct scsi_qla_host *vha;
898 struct list_head cmd_list;
899
900 struct atio_from_isp atio;
901
902 uint8_t ctx_dsd_alloced;
903
904 /* T10-DIF */
905 #define DIF_ERR_NONE 0
906 #define DIF_ERR_GRD 1
907 #define DIF_ERR_REF 2
908 #define DIF_ERR_APP 3
909 int8_t dif_err_code;
910 struct scatterlist *prot_sg;
911 uint32_t prot_sg_cnt;
912 uint32_t blk_sz, num_blks;
913 uint8_t scsi_status, sense_key, asc, ascq;
914
915 struct crc_context *ctx;
916 const uint8_t *cdb;
917 uint64_t lba;
918 uint16_t a_guard, e_guard, a_app_tag, e_app_tag;
919 uint32_t a_ref_tag, e_ref_tag;
920 #define DIF_BUNDL_DMA_VALID 1
921 uint16_t prot_flags;
922
923 uint64_t jiffies_at_alloc;
924 uint64_t jiffies_at_free;
925
926 enum trace_flags trc_flags;
927 };
928
929 struct qla_tgt_sess_work_param {
930 struct list_head sess_works_list_entry;
931
932 #define QLA_TGT_SESS_WORK_ABORT 1
933 #define QLA_TGT_SESS_WORK_TM 2
934 int type;
935
936 union {
937 struct abts_recv_from_24xx abts;
938 struct imm_ntfy_from_isp tm_iocb;
939 struct atio_from_isp tm_iocb2;
940 };
941 };
942
943 struct qla_tgt_mgmt_cmd {
944 uint8_t cmd_type;
945 uint8_t pad[3];
946 uint16_t tmr_func;
947 uint8_t fc_tm_rsp;
948 uint8_t abort_io_attr;
949 struct fc_port *sess;
950 struct qla_qpair *qpair;
951 struct scsi_qla_host *vha;
952 struct se_cmd se_cmd;
953 struct work_struct free_work;
954 unsigned int flags;
955 #define QLA24XX_MGMT_SEND_NACK BIT_0
956 #define QLA24XX_MGMT_ABORT_IO_ATTR_VALID BIT_1
957 uint32_t reset_count;
958 struct work_struct work;
959 uint64_t unpacked_lun;
960 union {
961 struct atio_from_isp atio;
962 struct imm_ntfy_from_isp imm_ntfy;
963 struct abts_recv_from_24xx abts;
964 } __packed orig_iocb;
965 };
966
967 struct qla_tgt_prm {
968 struct qla_tgt_cmd *cmd;
969 struct qla_tgt *tgt;
970 void *pkt;
971 struct scatterlist *sg; /* cmd data buffer SG vector */
972 unsigned char *sense_buffer;
973 int seg_cnt;
974 int req_cnt;
975 uint16_t rq_result;
976 int sense_buffer_len;
977 int residual;
978 int add_status_pkt;
979 /* dif */
980 struct scatterlist *prot_sg;
981 uint16_t prot_seg_cnt;
982 uint16_t tot_dsds;
983 };
984
985 /* Check for Switch reserved address */
986 #define IS_SW_RESV_ADDR(_s_id) \
987 ((_s_id.b.domain == 0xff) && ((_s_id.b.area & 0xf0) == 0xf0))
988
989 #define QLA_TGT_XMIT_DATA 1
990 #define QLA_TGT_XMIT_STATUS 2
991 #define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
992
993
994 extern struct qla_tgt_data qla_target;
995
996 /*
997 * Function prototypes for qla_target.c logic used by qla2xxx LLD code.
998 */
999 extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
1000 extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
1001 extern int qlt_lport_register(void *, u64, u64, u64,
1002 int (*callback)(struct scsi_qla_host *, void *, u64, u64));
1003 extern void qlt_lport_deregister(struct scsi_qla_host *);
1004 extern void qlt_unreg_sess(struct fc_port *);
1005 extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
1006 extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int);
1007 extern int __init qlt_init(void);
1008 extern void qlt_exit(void);
1009 extern void qlt_update_vp_map(struct scsi_qla_host *, int);
1010 extern void qlt_free_session_done(struct work_struct *);
1011 /*
1012 * This macro is used during early initializations when host->active_mode
1013 * is not set. Right now, ha value is ignored.
1014 */
1015 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
1016
1017 extern int ql2x_ini_mode;
1018
qla_tgt_mode_enabled(struct scsi_qla_host * ha)1019 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
1020 {
1021 return ha->host->active_mode == MODE_TARGET;
1022 }
1023
qla_ini_mode_enabled(struct scsi_qla_host * ha)1024 static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha)
1025 {
1026 return ha->host->active_mode == MODE_INITIATOR;
1027 }
1028
qla_dual_mode_enabled(struct scsi_qla_host * ha)1029 static inline bool qla_dual_mode_enabled(struct scsi_qla_host *ha)
1030 {
1031 return (ha->host->active_mode == MODE_DUAL);
1032 }
1033
sid_to_key(const be_id_t s_id)1034 static inline uint32_t sid_to_key(const be_id_t s_id)
1035 {
1036 return s_id.domain << 16 |
1037 s_id.area << 8 |
1038 s_id.al_pa;
1039 }
1040
1041 /*
1042 * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
1043 */
1044 extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *,
1045 response_t *);
1046 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
1047 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
1048 extern int qlt_abort_cmd(struct qla_tgt_cmd *);
1049 extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
1050 extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *);
1051 extern void qlt_free_cmd(struct qla_tgt_cmd *cmd);
1052 extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *);
1053 extern void qlt_enable_vha(struct scsi_qla_host *);
1054 extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
1055 extern u8 qlt_rff_id(struct scsi_qla_host *);
1056 extern void qlt_init_atio_q_entries(struct scsi_qla_host *);
1057 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *, uint8_t);
1058 extern void qlt_24xx_config_rings(struct scsi_qla_host *);
1059 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *,
1060 struct nvram_24xx *);
1061 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *,
1062 struct init_cb_24xx *);
1063 extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *,
1064 struct init_cb_81xx *);
1065 extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *,
1066 struct nvram_81xx *);
1067 extern int qlt_24xx_process_response_error(struct scsi_qla_host *,
1068 struct sts_entry_24xx *);
1069 extern void qlt_modify_vp_config(struct scsi_qla_host *,
1070 struct vp_config_entry_24xx *);
1071 extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *);
1072 extern int qlt_mem_alloc(struct qla_hw_data *);
1073 extern void qlt_mem_free(struct qla_hw_data *);
1074 extern int qlt_stop_phase1(struct qla_tgt *);
1075 extern void qlt_stop_phase2(struct qla_tgt *);
1076 extern irqreturn_t qla83xx_msix_atio_q(int, void *);
1077 extern void qlt_83xx_iospace_config(struct qla_hw_data *);
1078 extern int qlt_free_qfull_cmds(struct qla_qpair *);
1079 extern void qlt_logo_completion_handler(fc_port_t *, int);
1080 extern void qlt_do_generation_tick(struct scsi_qla_host *, int *);
1081
1082 void qlt_send_resp_ctio(struct qla_qpair *, struct qla_tgt_cmd *, uint8_t,
1083 uint8_t, uint8_t, uint8_t);
1084
1085 #endif /* __QLA_TARGET_H */
1086