Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 1 | /* |
| 2 | * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx |
| 3 | * |
| 4 | * based on qla2x00t.c code: |
| 5 | * |
| 6 | * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> |
| 7 | * Copyright (C) 2004 - 2005 Leonid Stoljar |
| 8 | * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> |
| 9 | * Copyright (C) 2006 - 2010 ID7 Ltd. |
| 10 | * |
| 11 | * Forward port and refactoring to modern qla2xxx and target/configfs |
| 12 | * |
| 13 | * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org> |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
| 16 | * modify it under the terms of the GNU General Public License |
| 17 | * as published by the Free Software Foundation, version 2 |
| 18 | * of the License. |
| 19 | * |
| 20 | * This program is distributed in the hope that it will be useful, |
| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | * GNU General Public License for more details. |
| 24 | */ |
| 25 | |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/types.h> |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 29 | #include <linux/blkdev.h> |
| 30 | #include <linux/interrupt.h> |
| 31 | #include <linux/pci.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <linux/list.h> |
| 34 | #include <linux/workqueue.h> |
| 35 | #include <asm/unaligned.h> |
| 36 | #include <scsi/scsi.h> |
| 37 | #include <scsi/scsi_host.h> |
| 38 | #include <scsi/scsi_tcq.h> |
| 39 | #include <target/target_core_base.h> |
| 40 | #include <target/target_core_fabric.h> |
| 41 | |
| 42 | #include "qla_def.h" |
| 43 | #include "qla_target.h" |
| 44 | |
| 45 | static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; |
| 46 | module_param(qlini_mode, charp, S_IRUGO); |
| 47 | MODULE_PARM_DESC(qlini_mode, |
| 48 | "Determines when initiator mode will be enabled. Possible values: " |
| 49 | "\"exclusive\" - initiator mode will be enabled on load, " |
| 50 | "disabled on enabling target mode and then on disabling target mode " |
| 51 | "enabled back; " |
| 52 | "\"disabled\" - initiator mode will never be enabled; " |
| 53 | "\"enabled\" (default) - initiator mode will always stay enabled."); |
| 54 | |
| 55 | static int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; |
| 56 | |
| 57 | /* |
| 58 | * From scsi/fc/fc_fcp.h |
| 59 | */ |
| 60 | enum fcp_resp_rsp_codes { |
| 61 | FCP_TMF_CMPL = 0, |
| 62 | FCP_DATA_LEN_INVALID = 1, |
| 63 | FCP_CMND_FIELDS_INVALID = 2, |
| 64 | FCP_DATA_PARAM_MISMATCH = 3, |
| 65 | FCP_TMF_REJECTED = 4, |
| 66 | FCP_TMF_FAILED = 5, |
| 67 | FCP_TMF_INVALID_LUN = 9, |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * fc_pri_ta from scsi/fc/fc_fcp.h |
| 72 | */ |
| 73 | #define FCP_PTA_SIMPLE 0 /* simple task attribute */ |
| 74 | #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ |
| 75 | #define FCP_PTA_ORDERED 2 /* ordered task attribute */ |
| 76 | #define FCP_PTA_ACA 4 /* auto. contigent allegiance */ |
| 77 | #define FCP_PTA_MASK 7 /* mask for task attribute field */ |
| 78 | #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ |
| 79 | #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ |
| 80 | |
| 81 | /* |
| 82 | * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which |
| 83 | * must be called under HW lock and could unlock/lock it inside. |
| 84 | * It isn't an issue, since in the current implementation on the time when |
| 85 | * those functions are called: |
| 86 | * |
| 87 | * - Either context is IRQ and only IRQ handler can modify HW data, |
| 88 | * including rings related fields, |
| 89 | * |
| 90 | * - Or access to target mode variables from struct qla_tgt doesn't |
| 91 | * cross those functions boundaries, except tgt_stop, which |
| 92 | * additionally protected by irq_cmd_count. |
| 93 | */ |
| 94 | /* Predefs for callbacks handed to qla2xxx LLD */ |
| 95 | static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, |
| 96 | struct atio_from_isp *pkt); |
| 97 | static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); |
| 98 | static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, |
| 99 | int fn, void *iocb, int flags); |
| 100 | static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd |
| 101 | *cmd, struct atio_from_isp *atio, int ha_locked); |
| 102 | static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha, |
| 103 | struct qla_tgt_srr_imm *imm, int ha_lock); |
| 104 | /* |
| 105 | * Global Variables |
| 106 | */ |
| 107 | static struct kmem_cache *qla_tgt_cmd_cachep; |
| 108 | static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; |
| 109 | static mempool_t *qla_tgt_mgmt_cmd_mempool; |
| 110 | static struct workqueue_struct *qla_tgt_wq; |
| 111 | static DEFINE_MUTEX(qla_tgt_mutex); |
| 112 | static LIST_HEAD(qla_tgt_glist); |
| 113 | |
| 114 | /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */ |
| 115 | static struct qla_tgt_sess *qlt_find_sess_by_port_name( |
| 116 | struct qla_tgt *tgt, |
| 117 | const uint8_t *port_name) |
| 118 | { |
| 119 | struct qla_tgt_sess *sess; |
| 120 | |
| 121 | list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) { |
| 122 | if (!memcmp(sess->port_name, port_name, WWN_SIZE)) |
| 123 | return sess; |
| 124 | } |
| 125 | |
| 126 | return NULL; |
| 127 | } |
| 128 | |
| 129 | /* Might release hw lock, then reaquire!! */ |
| 130 | static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) |
| 131 | { |
| 132 | /* Send marker if required */ |
| 133 | if (unlikely(vha->marker_needed != 0)) { |
| 134 | int rc = qla2x00_issue_marker(vha, vha_locked); |
| 135 | if (rc != QLA_SUCCESS) { |
| 136 | ql_dbg(ql_dbg_tgt, vha, 0xe03d, |
| 137 | "qla_target(%d): issue_marker() failed\n", |
| 138 | vha->vp_idx); |
| 139 | } |
| 140 | return rc; |
| 141 | } |
| 142 | return QLA_SUCCESS; |
| 143 | } |
| 144 | |
| 145 | static inline |
| 146 | struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, |
| 147 | uint8_t *d_id) |
| 148 | { |
| 149 | struct qla_hw_data *ha = vha->hw; |
| 150 | uint8_t vp_idx; |
| 151 | |
| 152 | if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0])) |
| 153 | return NULL; |
| 154 | |
| 155 | if (vha->d_id.b.al_pa == d_id[2]) |
| 156 | return vha; |
| 157 | |
| 158 | BUG_ON(ha->tgt.tgt_vp_map == NULL); |
| 159 | vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx; |
| 160 | if (likely(test_bit(vp_idx, ha->vp_idx_map))) |
| 161 | return ha->tgt.tgt_vp_map[vp_idx].vha; |
| 162 | |
| 163 | return NULL; |
| 164 | } |
| 165 | |
| 166 | static inline |
| 167 | struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, |
| 168 | uint16_t vp_idx) |
| 169 | { |
| 170 | struct qla_hw_data *ha = vha->hw; |
| 171 | |
| 172 | if (vha->vp_idx == vp_idx) |
| 173 | return vha; |
| 174 | |
| 175 | BUG_ON(ha->tgt.tgt_vp_map == NULL); |
| 176 | if (likely(test_bit(vp_idx, ha->vp_idx_map))) |
| 177 | return ha->tgt.tgt_vp_map[vp_idx].vha; |
| 178 | |
| 179 | return NULL; |
| 180 | } |
| 181 | |
| 182 | void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, |
| 183 | struct atio_from_isp *atio) |
| 184 | { |
| 185 | switch (atio->u.raw.entry_type) { |
| 186 | case ATIO_TYPE7: |
| 187 | { |
| 188 | struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, |
| 189 | atio->u.isp24.fcp_hdr.d_id); |
| 190 | if (unlikely(NULL == host)) { |
| 191 | ql_dbg(ql_dbg_tgt, vha, 0xe03e, |
| 192 | "qla_target(%d): Received ATIO_TYPE7 " |
| 193 | "with unknown d_id %x:%x:%x\n", vha->vp_idx, |
| 194 | atio->u.isp24.fcp_hdr.d_id[0], |
| 195 | atio->u.isp24.fcp_hdr.d_id[1], |
| 196 | atio->u.isp24.fcp_hdr.d_id[2]); |
| 197 | break; |
| 198 | } |
| 199 | qlt_24xx_atio_pkt(host, atio); |
| 200 | break; |
| 201 | } |
| 202 | |
| 203 | case IMMED_NOTIFY_TYPE: |
| 204 | { |
| 205 | struct scsi_qla_host *host = vha; |
| 206 | struct imm_ntfy_from_isp *entry = |
| 207 | (struct imm_ntfy_from_isp *)atio; |
| 208 | |
| 209 | if ((entry->u.isp24.vp_index != 0xFF) && |
| 210 | (entry->u.isp24.nport_handle != 0xFFFF)) { |
| 211 | host = qlt_find_host_by_vp_idx(vha, |
| 212 | entry->u.isp24.vp_index); |
| 213 | if (unlikely(!host)) { |
| 214 | ql_dbg(ql_dbg_tgt, vha, 0xe03f, |
| 215 | "qla_target(%d): Received " |
| 216 | "ATIO (IMMED_NOTIFY_TYPE) " |
| 217 | "with unknown vp_index %d\n", |
| 218 | vha->vp_idx, entry->u.isp24.vp_index); |
| 219 | break; |
| 220 | } |
| 221 | } |
| 222 | qlt_24xx_atio_pkt(host, atio); |
| 223 | break; |
| 224 | } |
| 225 | |
| 226 | default: |
| 227 | ql_dbg(ql_dbg_tgt, vha, 0xe040, |
| 228 | "qla_target(%d): Received unknown ATIO atio " |
| 229 | "type %x\n", vha->vp_idx, atio->u.raw.entry_type); |
| 230 | break; |
| 231 | } |
| 232 | |
| 233 | return; |
| 234 | } |
| 235 | |
| 236 | void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt) |
| 237 | { |
| 238 | switch (pkt->entry_type) { |
| 239 | case CTIO_TYPE7: |
| 240 | { |
| 241 | struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; |
| 242 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, |
| 243 | entry->vp_index); |
| 244 | if (unlikely(!host)) { |
| 245 | ql_dbg(ql_dbg_tgt, vha, 0xe041, |
| 246 | "qla_target(%d): Response pkt (CTIO_TYPE7) " |
| 247 | "received, with unknown vp_index %d\n", |
| 248 | vha->vp_idx, entry->vp_index); |
| 249 | break; |
| 250 | } |
| 251 | qlt_response_pkt(host, pkt); |
| 252 | break; |
| 253 | } |
| 254 | |
| 255 | case IMMED_NOTIFY_TYPE: |
| 256 | { |
| 257 | struct scsi_qla_host *host = vha; |
| 258 | struct imm_ntfy_from_isp *entry = |
| 259 | (struct imm_ntfy_from_isp *)pkt; |
| 260 | |
| 261 | host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); |
| 262 | if (unlikely(!host)) { |
| 263 | ql_dbg(ql_dbg_tgt, vha, 0xe042, |
| 264 | "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " |
| 265 | "received, with unknown vp_index %d\n", |
| 266 | vha->vp_idx, entry->u.isp24.vp_index); |
| 267 | break; |
| 268 | } |
| 269 | qlt_response_pkt(host, pkt); |
| 270 | break; |
| 271 | } |
| 272 | |
| 273 | case NOTIFY_ACK_TYPE: |
| 274 | { |
| 275 | struct scsi_qla_host *host = vha; |
| 276 | struct nack_to_isp *entry = (struct nack_to_isp *)pkt; |
| 277 | |
| 278 | if (0xFF != entry->u.isp24.vp_index) { |
| 279 | host = qlt_find_host_by_vp_idx(vha, |
| 280 | entry->u.isp24.vp_index); |
| 281 | if (unlikely(!host)) { |
| 282 | ql_dbg(ql_dbg_tgt, vha, 0xe043, |
| 283 | "qla_target(%d): Response " |
| 284 | "pkt (NOTIFY_ACK_TYPE) " |
| 285 | "received, with unknown " |
| 286 | "vp_index %d\n", vha->vp_idx, |
| 287 | entry->u.isp24.vp_index); |
| 288 | break; |
| 289 | } |
| 290 | } |
| 291 | qlt_response_pkt(host, pkt); |
| 292 | break; |
| 293 | } |
| 294 | |
| 295 | case ABTS_RECV_24XX: |
| 296 | { |
| 297 | struct abts_recv_from_24xx *entry = |
| 298 | (struct abts_recv_from_24xx *)pkt; |
| 299 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, |
| 300 | entry->vp_index); |
| 301 | if (unlikely(!host)) { |
| 302 | ql_dbg(ql_dbg_tgt, vha, 0xe044, |
| 303 | "qla_target(%d): Response pkt " |
| 304 | "(ABTS_RECV_24XX) received, with unknown " |
| 305 | "vp_index %d\n", vha->vp_idx, entry->vp_index); |
| 306 | break; |
| 307 | } |
| 308 | qlt_response_pkt(host, pkt); |
| 309 | break; |
| 310 | } |
| 311 | |
| 312 | case ABTS_RESP_24XX: |
| 313 | { |
| 314 | struct abts_resp_to_24xx *entry = |
| 315 | (struct abts_resp_to_24xx *)pkt; |
| 316 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, |
| 317 | entry->vp_index); |
| 318 | if (unlikely(!host)) { |
| 319 | ql_dbg(ql_dbg_tgt, vha, 0xe045, |
| 320 | "qla_target(%d): Response pkt " |
| 321 | "(ABTS_RECV_24XX) received, with unknown " |
| 322 | "vp_index %d\n", vha->vp_idx, entry->vp_index); |
| 323 | break; |
| 324 | } |
| 325 | qlt_response_pkt(host, pkt); |
| 326 | break; |
| 327 | } |
| 328 | |
| 329 | default: |
| 330 | qlt_response_pkt(vha, pkt); |
| 331 | break; |
| 332 | } |
| 333 | |
| 334 | } |
| 335 | |
| 336 | static void qlt_free_session_done(struct work_struct *work) |
| 337 | { |
| 338 | struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess, |
| 339 | free_work); |
| 340 | struct qla_tgt *tgt = sess->tgt; |
| 341 | struct scsi_qla_host *vha = sess->vha; |
| 342 | struct qla_hw_data *ha = vha->hw; |
| 343 | |
| 344 | BUG_ON(!tgt); |
| 345 | /* |
| 346 | * Release the target session for FC Nexus from fabric module code. |
| 347 | */ |
| 348 | if (sess->se_sess != NULL) |
| 349 | ha->tgt.tgt_ops->free_session(sess); |
| 350 | |
| 351 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, |
| 352 | "Unregistration of sess %p finished\n", sess); |
| 353 | |
| 354 | kfree(sess); |
| 355 | /* |
| 356 | * We need to protect against race, when tgt is freed before or |
| 357 | * inside wake_up() |
| 358 | */ |
| 359 | tgt->sess_count--; |
| 360 | if (tgt->sess_count == 0) |
| 361 | wake_up_all(&tgt->waitQ); |
| 362 | } |
| 363 | |
| 364 | /* ha->hardware_lock supposed to be held on entry */ |
| 365 | void qlt_unreg_sess(struct qla_tgt_sess *sess) |
| 366 | { |
| 367 | struct scsi_qla_host *vha = sess->vha; |
| 368 | |
| 369 | vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); |
| 370 | |
| 371 | list_del(&sess->sess_list_entry); |
| 372 | if (sess->deleted) |
| 373 | list_del(&sess->del_list_entry); |
| 374 | |
| 375 | INIT_WORK(&sess->free_work, qlt_free_session_done); |
| 376 | schedule_work(&sess->free_work); |
| 377 | } |
| 378 | EXPORT_SYMBOL(qlt_unreg_sess); |
| 379 | |
| 380 | /* ha->hardware_lock supposed to be held on entry */ |
| 381 | static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) |
| 382 | { |
| 383 | struct qla_hw_data *ha = vha->hw; |
| 384 | struct qla_tgt_sess *sess = NULL; |
| 385 | uint32_t unpacked_lun, lun = 0; |
| 386 | uint16_t loop_id; |
| 387 | int res = 0; |
| 388 | struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; |
| 389 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; |
| 390 | |
| 391 | loop_id = le16_to_cpu(n->u.isp24.nport_handle); |
| 392 | if (loop_id == 0xFFFF) { |
| 393 | #if 0 /* FIXME: Re-enable Global event handling.. */ |
| 394 | /* Global event */ |
| 395 | atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count); |
| 396 | qlt_clear_tgt_db(ha->tgt.qla_tgt, 1); |
| 397 | if (!list_empty(&ha->tgt.qla_tgt->sess_list)) { |
| 398 | sess = list_entry(ha->tgt.qla_tgt->sess_list.next, |
| 399 | typeof(*sess), sess_list_entry); |
| 400 | switch (mcmd) { |
| 401 | case QLA_TGT_NEXUS_LOSS_SESS: |
| 402 | mcmd = QLA_TGT_NEXUS_LOSS; |
| 403 | break; |
| 404 | case QLA_TGT_ABORT_ALL_SESS: |
| 405 | mcmd = QLA_TGT_ABORT_ALL; |
| 406 | break; |
| 407 | case QLA_TGT_NEXUS_LOSS: |
| 408 | case QLA_TGT_ABORT_ALL: |
| 409 | break; |
| 410 | default: |
| 411 | ql_dbg(ql_dbg_tgt, vha, 0xe046, |
| 412 | "qla_target(%d): Not allowed " |
| 413 | "command %x in %s", vha->vp_idx, |
| 414 | mcmd, __func__); |
| 415 | sess = NULL; |
| 416 | break; |
| 417 | } |
| 418 | } else |
| 419 | sess = NULL; |
| 420 | #endif |
| 421 | } else { |
| 422 | sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); |
| 423 | } |
| 424 | |
| 425 | ql_dbg(ql_dbg_tgt, vha, 0xe000, |
| 426 | "Using sess for qla_tgt_reset: %p\n", sess); |
| 427 | if (!sess) { |
| 428 | res = -ESRCH; |
| 429 | return res; |
| 430 | } |
| 431 | |
| 432 | ql_dbg(ql_dbg_tgt, vha, 0xe047, |
| 433 | "scsi(%ld): resetting (session %p from port " |
| 434 | "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, " |
| 435 | "mcmd %x, loop_id %d)\n", vha->host_no, sess, |
| 436 | sess->port_name[0], sess->port_name[1], |
| 437 | sess->port_name[2], sess->port_name[3], |
| 438 | sess->port_name[4], sess->port_name[5], |
| 439 | sess->port_name[6], sess->port_name[7], |
| 440 | mcmd, loop_id); |
| 441 | |
| 442 | lun = a->u.isp24.fcp_cmnd.lun; |
| 443 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); |
| 444 | |
| 445 | return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd, |
| 446 | iocb, QLA24XX_MGMT_SEND_NACK); |
| 447 | } |
| 448 | |
| 449 | /* ha->hardware_lock supposed to be held on entry */ |
| 450 | static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess, |
| 451 | bool immediate) |
| 452 | { |
| 453 | struct qla_tgt *tgt = sess->tgt; |
| 454 | uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5; |
| 455 | |
| 456 | if (sess->deleted) |
| 457 | return; |
| 458 | |
| 459 | ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, |
| 460 | "Scheduling sess %p for deletion\n", sess); |
| 461 | list_add_tail(&sess->del_list_entry, &tgt->del_sess_list); |
| 462 | sess->deleted = 1; |
| 463 | |
| 464 | if (immediate) |
| 465 | dev_loss_tmo = 0; |
| 466 | |
| 467 | sess->expires = jiffies + dev_loss_tmo * HZ; |
| 468 | |
| 469 | ql_dbg(ql_dbg_tgt, sess->vha, 0xe048, |
| 470 | "qla_target(%d): session for port %02x:%02x:%02x:" |
| 471 | "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for " |
| 472 | "deletion in %u secs (expires: %lu) immed: %d\n", |
| 473 | sess->vha->vp_idx, |
| 474 | sess->port_name[0], sess->port_name[1], |
| 475 | sess->port_name[2], sess->port_name[3], |
| 476 | sess->port_name[4], sess->port_name[5], |
| 477 | sess->port_name[6], sess->port_name[7], |
| 478 | sess->loop_id, dev_loss_tmo, sess->expires, immediate); |
| 479 | |
| 480 | if (immediate) |
| 481 | schedule_delayed_work(&tgt->sess_del_work, 0); |
| 482 | else |
| 483 | schedule_delayed_work(&tgt->sess_del_work, |
| 484 | jiffies - sess->expires); |
| 485 | } |
| 486 | |
| 487 | /* ha->hardware_lock supposed to be held on entry */ |
| 488 | static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only) |
| 489 | { |
| 490 | struct qla_tgt_sess *sess; |
| 491 | |
| 492 | list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) |
| 493 | qlt_schedule_sess_for_deletion(sess, true); |
| 494 | |
| 495 | /* At this point tgt could be already dead */ |
| 496 | } |
| 497 | |
| 498 | static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, |
| 499 | uint16_t *loop_id) |
| 500 | { |
| 501 | struct qla_hw_data *ha = vha->hw; |
| 502 | dma_addr_t gid_list_dma; |
| 503 | struct gid_list_info *gid_list; |
| 504 | char *id_iter; |
| 505 | int res, rc, i; |
| 506 | uint16_t entries; |
| 507 | |
| 508 | gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), |
| 509 | &gid_list_dma, GFP_KERNEL); |
| 510 | if (!gid_list) { |
| 511 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, |
| 512 | "qla_target(%d): DMA Alloc failed of %u\n", |
| 513 | vha->vp_idx, qla2x00_gid_list_size(ha)); |
| 514 | return -ENOMEM; |
| 515 | } |
| 516 | |
| 517 | /* Get list of logged in devices */ |
| 518 | rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries); |
| 519 | if (rc != QLA_SUCCESS) { |
| 520 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, |
| 521 | "qla_target(%d): get_id_list() failed: %x\n", |
| 522 | vha->vp_idx, rc); |
| 523 | res = -1; |
| 524 | goto out_free_id_list; |
| 525 | } |
| 526 | |
| 527 | id_iter = (char *)gid_list; |
| 528 | res = -1; |
| 529 | for (i = 0; i < entries; i++) { |
| 530 | struct gid_list_info *gid = (struct gid_list_info *)id_iter; |
| 531 | if ((gid->al_pa == s_id[2]) && |
| 532 | (gid->area == s_id[1]) && |
| 533 | (gid->domain == s_id[0])) { |
| 534 | *loop_id = le16_to_cpu(gid->loop_id); |
| 535 | res = 0; |
| 536 | break; |
| 537 | } |
| 538 | id_iter += ha->gid_list_info_size; |
| 539 | } |
| 540 | |
| 541 | out_free_id_list: |
| 542 | dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), |
| 543 | gid_list, gid_list_dma); |
| 544 | return res; |
| 545 | } |
| 546 | |
| 547 | static bool qlt_check_fcport_exist(struct scsi_qla_host *vha, |
| 548 | struct qla_tgt_sess *sess) |
| 549 | { |
| 550 | struct qla_hw_data *ha = vha->hw; |
| 551 | struct qla_port_24xx_data *pmap24; |
| 552 | bool res, found = false; |
| 553 | int rc, i; |
| 554 | uint16_t loop_id = 0xFFFF; /* to eliminate compiler's warning */ |
| 555 | uint16_t entries; |
| 556 | void *pmap; |
| 557 | int pmap_len; |
| 558 | fc_port_t *fcport; |
| 559 | int global_resets; |
| 560 | |
| 561 | retry: |
| 562 | global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count); |
| 563 | |
| 564 | rc = qla2x00_get_node_name_list(vha, &pmap, &pmap_len); |
| 565 | if (rc != QLA_SUCCESS) { |
| 566 | res = false; |
| 567 | goto out; |
| 568 | } |
| 569 | |
| 570 | pmap24 = pmap; |
| 571 | entries = pmap_len/sizeof(*pmap24); |
| 572 | |
| 573 | for (i = 0; i < entries; ++i) { |
| 574 | if (!memcmp(sess->port_name, pmap24[i].port_name, WWN_SIZE)) { |
| 575 | loop_id = le16_to_cpu(pmap24[i].loop_id); |
| 576 | found = true; |
| 577 | break; |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | kfree(pmap); |
| 582 | |
| 583 | if (!found) { |
| 584 | res = false; |
| 585 | goto out; |
| 586 | } |
| 587 | |
| 588 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf046, |
| 589 | "qlt_check_fcport_exist(): loop_id %d", loop_id); |
| 590 | |
| 591 | fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); |
| 592 | if (fcport == NULL) { |
| 593 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf047, |
| 594 | "qla_target(%d): Allocation of tmp FC port failed", |
| 595 | vha->vp_idx); |
| 596 | res = false; |
| 597 | goto out; |
| 598 | } |
| 599 | |
| 600 | fcport->loop_id = loop_id; |
| 601 | |
| 602 | rc = qla2x00_get_port_database(vha, fcport, 0); |
| 603 | if (rc != QLA_SUCCESS) { |
| 604 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf048, |
| 605 | "qla_target(%d): Failed to retrieve fcport " |
| 606 | "information -- get_port_database() returned %x " |
| 607 | "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); |
| 608 | res = false; |
| 609 | goto out_free_fcport; |
| 610 | } |
| 611 | |
| 612 | if (global_resets != |
| 613 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) { |
| 614 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, |
| 615 | "qla_target(%d): global reset during session discovery" |
| 616 | " (counter was %d, new %d), retrying", |
| 617 | vha->vp_idx, global_resets, |
| 618 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)); |
| 619 | goto retry; |
| 620 | } |
| 621 | |
| 622 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003, |
| 623 | "Updating sess %p s_id %x:%x:%x, loop_id %d) to d_id %x:%x:%x, " |
| 624 | "loop_id %d", sess, sess->s_id.b.domain, sess->s_id.b.al_pa, |
| 625 | sess->s_id.b.area, sess->loop_id, fcport->d_id.b.domain, |
| 626 | fcport->d_id.b.al_pa, fcport->d_id.b.area, fcport->loop_id); |
| 627 | |
| 628 | sess->s_id = fcport->d_id; |
| 629 | sess->loop_id = fcport->loop_id; |
| 630 | sess->conf_compl_supported = !!(fcport->flags & |
| 631 | FCF_CONF_COMP_SUPPORTED); |
| 632 | |
| 633 | res = true; |
| 634 | |
| 635 | out_free_fcport: |
| 636 | kfree(fcport); |
| 637 | |
| 638 | out: |
| 639 | return res; |
| 640 | } |
| 641 | |
| 642 | /* ha->hardware_lock supposed to be held on entry */ |
| 643 | static void qlt_undelete_sess(struct qla_tgt_sess *sess) |
| 644 | { |
| 645 | BUG_ON(!sess->deleted); |
| 646 | |
| 647 | list_del(&sess->del_list_entry); |
| 648 | sess->deleted = 0; |
| 649 | } |
| 650 | |
| 651 | static void qlt_del_sess_work_fn(struct delayed_work *work) |
| 652 | { |
| 653 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, |
| 654 | sess_del_work); |
| 655 | struct scsi_qla_host *vha = tgt->vha; |
| 656 | struct qla_hw_data *ha = vha->hw; |
| 657 | struct qla_tgt_sess *sess; |
| 658 | unsigned long flags; |
| 659 | |
| 660 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 661 | while (!list_empty(&tgt->del_sess_list)) { |
| 662 | sess = list_entry(tgt->del_sess_list.next, typeof(*sess), |
| 663 | del_list_entry); |
| 664 | if (time_after_eq(jiffies, sess->expires)) { |
| 665 | bool cancel; |
| 666 | |
| 667 | qlt_undelete_sess(sess); |
| 668 | |
| 669 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 670 | cancel = qlt_check_fcport_exist(vha, sess); |
| 671 | |
| 672 | if (cancel) { |
| 673 | if (sess->deleted) { |
| 674 | /* |
| 675 | * sess was again deleted while we were |
| 676 | * discovering it |
| 677 | */ |
| 678 | spin_lock_irqsave(&ha->hardware_lock, |
| 679 | flags); |
| 680 | continue; |
| 681 | } |
| 682 | |
| 683 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf049, |
| 684 | "qla_target(%d): cancel deletion of " |
| 685 | "session for port %02x:%02x:%02x:%02x:%02x:" |
| 686 | "%02x:%02x:%02x (loop ID %d), because " |
| 687 | " it isn't deleted by firmware", |
| 688 | vha->vp_idx, sess->port_name[0], |
| 689 | sess->port_name[1], sess->port_name[2], |
| 690 | sess->port_name[3], sess->port_name[4], |
| 691 | sess->port_name[5], sess->port_name[6], |
| 692 | sess->port_name[7], sess->loop_id); |
| 693 | } else { |
| 694 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, |
| 695 | "Timeout: sess %p about to be deleted\n", |
| 696 | sess); |
| 697 | ha->tgt.tgt_ops->shutdown_sess(sess); |
| 698 | ha->tgt.tgt_ops->put_sess(sess); |
| 699 | } |
| 700 | |
| 701 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 702 | } else { |
| 703 | schedule_delayed_work(&tgt->sess_del_work, |
| 704 | jiffies - sess->expires); |
| 705 | break; |
| 706 | } |
| 707 | } |
| 708 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 709 | } |
| 710 | |
| 711 | /* |
| 712 | * Adds an extra ref to allow to drop hw lock after adding sess to the list. |
| 713 | * Caller must put it. |
| 714 | */ |
| 715 | static struct qla_tgt_sess *qlt_create_sess( |
| 716 | struct scsi_qla_host *vha, |
| 717 | fc_port_t *fcport, |
| 718 | bool local) |
| 719 | { |
| 720 | struct qla_hw_data *ha = vha->hw; |
| 721 | struct qla_tgt_sess *sess; |
| 722 | unsigned long flags; |
| 723 | unsigned char be_sid[3]; |
| 724 | |
| 725 | /* Check to avoid double sessions */ |
| 726 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 727 | list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list, |
| 728 | sess_list_entry) { |
| 729 | if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) { |
| 730 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005, |
| 731 | "Double sess %p found (s_id %x:%x:%x, " |
| 732 | "loop_id %d), updating to d_id %x:%x:%x, " |
| 733 | "loop_id %d", sess, sess->s_id.b.domain, |
| 734 | sess->s_id.b.al_pa, sess->s_id.b.area, |
| 735 | sess->loop_id, fcport->d_id.b.domain, |
| 736 | fcport->d_id.b.al_pa, fcport->d_id.b.area, |
| 737 | fcport->loop_id); |
| 738 | |
| 739 | if (sess->deleted) |
| 740 | qlt_undelete_sess(sess); |
| 741 | |
| 742 | kref_get(&sess->se_sess->sess_kref); |
| 743 | sess->s_id = fcport->d_id; |
| 744 | sess->loop_id = fcport->loop_id; |
| 745 | sess->conf_compl_supported = !!(fcport->flags & |
| 746 | FCF_CONF_COMP_SUPPORTED); |
| 747 | if (sess->local && !local) |
| 748 | sess->local = 0; |
| 749 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 750 | |
| 751 | return sess; |
| 752 | } |
| 753 | } |
| 754 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 755 | |
| 756 | sess = kzalloc(sizeof(*sess), GFP_KERNEL); |
| 757 | if (!sess) { |
| 758 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a, |
| 759 | "qla_target(%u): session allocation failed, " |
| 760 | "all commands from port %02x:%02x:%02x:%02x:" |
| 761 | "%02x:%02x:%02x:%02x will be refused", vha->vp_idx, |
| 762 | fcport->port_name[0], fcport->port_name[1], |
| 763 | fcport->port_name[2], fcport->port_name[3], |
| 764 | fcport->port_name[4], fcport->port_name[5], |
| 765 | fcport->port_name[6], fcport->port_name[7]); |
| 766 | |
| 767 | return NULL; |
| 768 | } |
| 769 | sess->tgt = ha->tgt.qla_tgt; |
| 770 | sess->vha = vha; |
| 771 | sess->s_id = fcport->d_id; |
| 772 | sess->loop_id = fcport->loop_id; |
| 773 | sess->local = local; |
| 774 | |
| 775 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, |
| 776 | "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n", |
| 777 | sess, ha->tgt.qla_tgt); |
| 778 | |
| 779 | be_sid[0] = sess->s_id.b.domain; |
| 780 | be_sid[1] = sess->s_id.b.area; |
| 781 | be_sid[2] = sess->s_id.b.al_pa; |
| 782 | /* |
| 783 | * Determine if this fc_port->port_name is allowed to access |
| 784 | * target mode using explict NodeACLs+MappedLUNs, or using |
| 785 | * TPG demo mode. If this is successful a target mode FC nexus |
| 786 | * is created. |
| 787 | */ |
| 788 | if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, |
| 789 | &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) { |
| 790 | kfree(sess); |
| 791 | return NULL; |
| 792 | } |
| 793 | /* |
| 794 | * Take an extra reference to ->sess_kref here to handle qla_tgt_sess |
| 795 | * access across ->hardware_lock reaquire. |
| 796 | */ |
| 797 | kref_get(&sess->se_sess->sess_kref); |
| 798 | |
| 799 | sess->conf_compl_supported = !!(fcport->flags & |
| 800 | FCF_CONF_COMP_SUPPORTED); |
| 801 | BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name)); |
| 802 | memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name)); |
| 803 | |
| 804 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 805 | list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list); |
| 806 | ha->tgt.qla_tgt->sess_count++; |
| 807 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 808 | |
| 809 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, |
| 810 | "qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:" |
| 811 | "%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed" |
| 812 | " completion %ssupported) added\n", |
| 813 | vha->vp_idx, local ? "local " : "", fcport->port_name[0], |
| 814 | fcport->port_name[1], fcport->port_name[2], fcport->port_name[3], |
| 815 | fcport->port_name[4], fcport->port_name[5], fcport->port_name[6], |
| 816 | fcport->port_name[7], fcport->loop_id, sess->s_id.b.domain, |
| 817 | sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ? |
| 818 | "" : "not "); |
| 819 | |
| 820 | return sess; |
| 821 | } |
| 822 | |
| 823 | /* |
| 824 | * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port() |
| 825 | */ |
| 826 | void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) |
| 827 | { |
| 828 | struct qla_hw_data *ha = vha->hw; |
| 829 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 830 | struct qla_tgt_sess *sess; |
| 831 | unsigned long flags; |
| 832 | |
| 833 | if (!vha->hw->tgt.tgt_ops) |
| 834 | return; |
| 835 | |
| 836 | if (!tgt || (fcport->port_type != FCT_INITIATOR)) |
| 837 | return; |
| 838 | |
| 839 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 840 | if (tgt->tgt_stop) { |
| 841 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 842 | return; |
| 843 | } |
| 844 | sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); |
| 845 | if (!sess) { |
| 846 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 847 | |
| 848 | mutex_lock(&ha->tgt.tgt_mutex); |
| 849 | sess = qlt_create_sess(vha, fcport, false); |
| 850 | mutex_unlock(&ha->tgt.tgt_mutex); |
| 851 | |
| 852 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 853 | } else { |
| 854 | kref_get(&sess->se_sess->sess_kref); |
| 855 | |
| 856 | if (sess->deleted) { |
| 857 | qlt_undelete_sess(sess); |
| 858 | |
| 859 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, |
| 860 | "qla_target(%u): %ssession for port %02x:" |
| 861 | "%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) " |
| 862 | "reappeared\n", vha->vp_idx, sess->local ? "local " |
| 863 | : "", sess->port_name[0], sess->port_name[1], |
| 864 | sess->port_name[2], sess->port_name[3], |
| 865 | sess->port_name[4], sess->port_name[5], |
| 866 | sess->port_name[6], sess->port_name[7], |
| 867 | sess->loop_id); |
| 868 | |
| 869 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, |
| 870 | "Reappeared sess %p\n", sess); |
| 871 | } |
| 872 | sess->s_id = fcport->d_id; |
| 873 | sess->loop_id = fcport->loop_id; |
| 874 | sess->conf_compl_supported = !!(fcport->flags & |
| 875 | FCF_CONF_COMP_SUPPORTED); |
| 876 | } |
| 877 | |
| 878 | if (sess && sess->local) { |
| 879 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, |
| 880 | "qla_target(%u): local session for " |
| 881 | "port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " |
| 882 | "(loop ID %d) became global\n", vha->vp_idx, |
| 883 | fcport->port_name[0], fcport->port_name[1], |
| 884 | fcport->port_name[2], fcport->port_name[3], |
| 885 | fcport->port_name[4], fcport->port_name[5], |
| 886 | fcport->port_name[6], fcport->port_name[7], |
| 887 | sess->loop_id); |
| 888 | sess->local = 0; |
| 889 | } |
| 890 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 891 | |
| 892 | ha->tgt.tgt_ops->put_sess(sess); |
| 893 | } |
| 894 | |
| 895 | void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport) |
| 896 | { |
| 897 | struct qla_hw_data *ha = vha->hw; |
| 898 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 899 | struct qla_tgt_sess *sess; |
| 900 | unsigned long flags; |
| 901 | |
| 902 | if (!vha->hw->tgt.tgt_ops) |
| 903 | return; |
| 904 | |
| 905 | if (!tgt || (fcport->port_type != FCT_INITIATOR)) |
| 906 | return; |
| 907 | |
| 908 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 909 | if (tgt->tgt_stop) { |
| 910 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 911 | return; |
| 912 | } |
| 913 | sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); |
| 914 | if (!sess) { |
| 915 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 916 | return; |
| 917 | } |
| 918 | |
| 919 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); |
| 920 | |
| 921 | sess->local = 1; |
| 922 | qlt_schedule_sess_for_deletion(sess, false); |
| 923 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 924 | } |
| 925 | |
| 926 | static inline int test_tgt_sess_count(struct qla_tgt *tgt) |
| 927 | { |
| 928 | struct qla_hw_data *ha = tgt->ha; |
| 929 | unsigned long flags; |
| 930 | int res; |
| 931 | /* |
| 932 | * We need to protect against race, when tgt is freed before or |
| 933 | * inside wake_up() |
| 934 | */ |
| 935 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 936 | ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, |
| 937 | "tgt %p, empty(sess_list)=%d sess_count=%d\n", |
| 938 | tgt, list_empty(&tgt->sess_list), tgt->sess_count); |
| 939 | res = (tgt->sess_count == 0); |
| 940 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 941 | |
| 942 | return res; |
| 943 | } |
| 944 | |
| 945 | /* Called by tcm_qla2xxx configfs code */ |
| 946 | void qlt_stop_phase1(struct qla_tgt *tgt) |
| 947 | { |
| 948 | struct scsi_qla_host *vha = tgt->vha; |
| 949 | struct qla_hw_data *ha = tgt->ha; |
| 950 | unsigned long flags; |
| 951 | |
| 952 | if (tgt->tgt_stop || tgt->tgt_stopped) { |
| 953 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, |
| 954 | "Already in tgt->tgt_stop or tgt_stopped state\n"); |
| 955 | dump_stack(); |
| 956 | return; |
| 957 | } |
| 958 | |
| 959 | ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", |
| 960 | vha->host_no, vha); |
| 961 | /* |
| 962 | * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. |
| 963 | * Lock is needed, because we still can get an incoming packet. |
| 964 | */ |
| 965 | mutex_lock(&ha->tgt.tgt_mutex); |
| 966 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 967 | tgt->tgt_stop = 1; |
| 968 | qlt_clear_tgt_db(tgt, true); |
| 969 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 970 | mutex_unlock(&ha->tgt.tgt_mutex); |
| 971 | |
| 972 | flush_delayed_work_sync(&tgt->sess_del_work); |
| 973 | |
| 974 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, |
| 975 | "Waiting for sess works (tgt %p)", tgt); |
| 976 | spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| 977 | while (!list_empty(&tgt->sess_works_list)) { |
| 978 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| 979 | flush_scheduled_work(); |
| 980 | spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| 981 | } |
| 982 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| 983 | |
| 984 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, |
| 985 | "Waiting for tgt %p: list_empty(sess_list)=%d " |
| 986 | "sess_count=%d\n", tgt, list_empty(&tgt->sess_list), |
| 987 | tgt->sess_count); |
| 988 | |
| 989 | wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); |
| 990 | |
| 991 | /* Big hammer */ |
| 992 | if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha)) |
| 993 | qlt_disable_vha(vha); |
| 994 | |
| 995 | /* Wait for sessions to clear out (just in case) */ |
| 996 | wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); |
| 997 | } |
| 998 | EXPORT_SYMBOL(qlt_stop_phase1); |
| 999 | |
| 1000 | /* Called by tcm_qla2xxx configfs code */ |
| 1001 | void qlt_stop_phase2(struct qla_tgt *tgt) |
| 1002 | { |
| 1003 | struct qla_hw_data *ha = tgt->ha; |
| 1004 | unsigned long flags; |
| 1005 | |
| 1006 | if (tgt->tgt_stopped) { |
| 1007 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f, |
| 1008 | "Already in tgt->tgt_stopped state\n"); |
| 1009 | dump_stack(); |
| 1010 | return; |
| 1011 | } |
| 1012 | |
| 1013 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b, |
| 1014 | "Waiting for %d IRQ commands to complete (tgt %p)", |
| 1015 | tgt->irq_cmd_count, tgt); |
| 1016 | |
| 1017 | mutex_lock(&ha->tgt.tgt_mutex); |
| 1018 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1019 | while (tgt->irq_cmd_count != 0) { |
| 1020 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1021 | udelay(2); |
| 1022 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1023 | } |
| 1024 | tgt->tgt_stop = 0; |
| 1025 | tgt->tgt_stopped = 1; |
| 1026 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1027 | mutex_unlock(&ha->tgt.tgt_mutex); |
| 1028 | |
| 1029 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished", |
| 1030 | tgt); |
| 1031 | } |
| 1032 | EXPORT_SYMBOL(qlt_stop_phase2); |
| 1033 | |
| 1034 | /* Called from qlt_remove_target() -> qla2x00_remove_one() */ |
| 1035 | void qlt_release(struct qla_tgt *tgt) |
| 1036 | { |
| 1037 | struct qla_hw_data *ha = tgt->ha; |
| 1038 | |
| 1039 | if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped) |
| 1040 | qlt_stop_phase2(tgt); |
| 1041 | |
| 1042 | ha->tgt.qla_tgt = NULL; |
| 1043 | |
| 1044 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00d, |
| 1045 | "Release of tgt %p finished\n", tgt); |
| 1046 | |
| 1047 | kfree(tgt); |
| 1048 | } |
| 1049 | |
| 1050 | /* ha->hardware_lock supposed to be held on entry */ |
| 1051 | static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, |
| 1052 | const void *param, unsigned int param_size) |
| 1053 | { |
| 1054 | struct qla_tgt_sess_work_param *prm; |
| 1055 | unsigned long flags; |
| 1056 | |
| 1057 | prm = kzalloc(sizeof(*prm), GFP_ATOMIC); |
| 1058 | if (!prm) { |
| 1059 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, |
| 1060 | "qla_target(%d): Unable to create session " |
| 1061 | "work, command will be refused", 0); |
| 1062 | return -ENOMEM; |
| 1063 | } |
| 1064 | |
| 1065 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, |
| 1066 | "Scheduling work (type %d, prm %p)" |
| 1067 | " to find session for param %p (size %d, tgt %p)\n", |
| 1068 | type, prm, param, param_size, tgt); |
| 1069 | |
| 1070 | prm->type = type; |
| 1071 | memcpy(&prm->tm_iocb, param, param_size); |
| 1072 | |
| 1073 | spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| 1074 | list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); |
| 1075 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| 1076 | |
| 1077 | schedule_work(&tgt->sess_work); |
| 1078 | |
| 1079 | return 0; |
| 1080 | } |
| 1081 | |
| 1082 | /* |
| 1083 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 1084 | */ |
| 1085 | static void qlt_send_notify_ack(struct scsi_qla_host *vha, |
| 1086 | struct imm_ntfy_from_isp *ntfy, |
| 1087 | uint32_t add_flags, uint16_t resp_code, int resp_code_valid, |
| 1088 | uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) |
| 1089 | { |
| 1090 | struct qla_hw_data *ha = vha->hw; |
| 1091 | request_t *pkt; |
| 1092 | struct nack_to_isp *nack; |
| 1093 | |
| 1094 | ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); |
| 1095 | |
| 1096 | /* Send marker if required */ |
| 1097 | if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) |
| 1098 | return; |
| 1099 | |
| 1100 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); |
| 1101 | if (!pkt) { |
| 1102 | ql_dbg(ql_dbg_tgt, vha, 0xe049, |
| 1103 | "qla_target(%d): %s failed: unable to allocate " |
| 1104 | "request packet\n", vha->vp_idx, __func__); |
| 1105 | return; |
| 1106 | } |
| 1107 | |
| 1108 | if (ha->tgt.qla_tgt != NULL) |
| 1109 | ha->tgt.qla_tgt->notify_ack_expected++; |
| 1110 | |
| 1111 | pkt->entry_type = NOTIFY_ACK_TYPE; |
| 1112 | pkt->entry_count = 1; |
| 1113 | |
| 1114 | nack = (struct nack_to_isp *)pkt; |
| 1115 | nack->ox_id = ntfy->ox_id; |
| 1116 | |
| 1117 | nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; |
| 1118 | if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { |
| 1119 | nack->u.isp24.flags = ntfy->u.isp24.flags & |
| 1120 | __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); |
| 1121 | } |
| 1122 | nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; |
| 1123 | nack->u.isp24.status = ntfy->u.isp24.status; |
| 1124 | nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; |
| 1125 | nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; |
| 1126 | nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; |
| 1127 | nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; |
| 1128 | nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); |
| 1129 | nack->u.isp24.srr_reject_code = srr_reject_code; |
| 1130 | nack->u.isp24.srr_reject_code_expl = srr_explan; |
| 1131 | nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; |
| 1132 | |
| 1133 | ql_dbg(ql_dbg_tgt, vha, 0xe005, |
| 1134 | "qla_target(%d): Sending 24xx Notify Ack %d\n", |
| 1135 | vha->vp_idx, nack->u.isp24.status); |
| 1136 | |
| 1137 | qla2x00_start_iocbs(vha, vha->req); |
| 1138 | } |
| 1139 | |
| 1140 | /* |
| 1141 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 1142 | */ |
| 1143 | static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, |
| 1144 | struct abts_recv_from_24xx *abts, uint32_t status, |
| 1145 | bool ids_reversed) |
| 1146 | { |
| 1147 | struct qla_hw_data *ha = vha->hw; |
| 1148 | struct abts_resp_to_24xx *resp; |
| 1149 | uint32_t f_ctl; |
| 1150 | uint8_t *p; |
| 1151 | |
| 1152 | ql_dbg(ql_dbg_tgt, vha, 0xe006, |
| 1153 | "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", |
| 1154 | ha, abts, status); |
| 1155 | |
| 1156 | /* Send marker if required */ |
| 1157 | if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) |
| 1158 | return; |
| 1159 | |
| 1160 | resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); |
| 1161 | if (!resp) { |
| 1162 | ql_dbg(ql_dbg_tgt, vha, 0xe04a, |
| 1163 | "qla_target(%d): %s failed: unable to allocate " |
| 1164 | "request packet", vha->vp_idx, __func__); |
| 1165 | return; |
| 1166 | } |
| 1167 | |
| 1168 | resp->entry_type = ABTS_RESP_24XX; |
| 1169 | resp->entry_count = 1; |
| 1170 | resp->nport_handle = abts->nport_handle; |
| 1171 | resp->vp_index = vha->vp_idx; |
| 1172 | resp->sof_type = abts->sof_type; |
| 1173 | resp->exchange_address = abts->exchange_address; |
| 1174 | resp->fcp_hdr_le = abts->fcp_hdr_le; |
| 1175 | f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | |
| 1176 | F_CTL_LAST_SEQ | F_CTL_END_SEQ | |
| 1177 | F_CTL_SEQ_INITIATIVE); |
| 1178 | p = (uint8_t *)&f_ctl; |
| 1179 | resp->fcp_hdr_le.f_ctl[0] = *p++; |
| 1180 | resp->fcp_hdr_le.f_ctl[1] = *p++; |
| 1181 | resp->fcp_hdr_le.f_ctl[2] = *p; |
| 1182 | if (ids_reversed) { |
| 1183 | resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; |
| 1184 | resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; |
| 1185 | resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; |
| 1186 | resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; |
| 1187 | resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; |
| 1188 | resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; |
| 1189 | } else { |
| 1190 | resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; |
| 1191 | resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; |
| 1192 | resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; |
| 1193 | resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; |
| 1194 | resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; |
| 1195 | resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; |
| 1196 | } |
| 1197 | resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; |
| 1198 | if (status == FCP_TMF_CMPL) { |
| 1199 | resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; |
| 1200 | resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; |
| 1201 | resp->payload.ba_acct.low_seq_cnt = 0x0000; |
| 1202 | resp->payload.ba_acct.high_seq_cnt = 0xFFFF; |
| 1203 | resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; |
| 1204 | resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; |
| 1205 | } else { |
| 1206 | resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; |
| 1207 | resp->payload.ba_rjt.reason_code = |
| 1208 | BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; |
| 1209 | /* Other bytes are zero */ |
| 1210 | } |
| 1211 | |
| 1212 | ha->tgt.qla_tgt->abts_resp_expected++; |
| 1213 | |
| 1214 | qla2x00_start_iocbs(vha, vha->req); |
| 1215 | } |
| 1216 | |
| 1217 | /* |
| 1218 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 1219 | */ |
| 1220 | static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, |
| 1221 | struct abts_resp_from_24xx_fw *entry) |
| 1222 | { |
| 1223 | struct ctio7_to_24xx *ctio; |
| 1224 | |
| 1225 | ql_dbg(ql_dbg_tgt, vha, 0xe007, |
| 1226 | "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); |
| 1227 | /* Send marker if required */ |
| 1228 | if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) |
| 1229 | return; |
| 1230 | |
| 1231 | ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); |
| 1232 | if (ctio == NULL) { |
| 1233 | ql_dbg(ql_dbg_tgt, vha, 0xe04b, |
| 1234 | "qla_target(%d): %s failed: unable to allocate " |
| 1235 | "request packet\n", vha->vp_idx, __func__); |
| 1236 | return; |
| 1237 | } |
| 1238 | |
| 1239 | /* |
| 1240 | * We've got on entrance firmware's response on by us generated |
| 1241 | * ABTS response. So, in it ID fields are reversed. |
| 1242 | */ |
| 1243 | |
| 1244 | ctio->entry_type = CTIO_TYPE7; |
| 1245 | ctio->entry_count = 1; |
| 1246 | ctio->nport_handle = entry->nport_handle; |
| 1247 | ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| 1248 | ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); |
| 1249 | ctio->vp_index = vha->vp_idx; |
| 1250 | ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; |
| 1251 | ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; |
| 1252 | ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; |
| 1253 | ctio->exchange_addr = entry->exchange_addr_to_abort; |
| 1254 | ctio->u.status1.flags = |
| 1255 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | |
| 1256 | CTIO7_FLAGS_TERMINATE); |
| 1257 | ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; |
| 1258 | |
| 1259 | qla2x00_start_iocbs(vha, vha->req); |
| 1260 | |
| 1261 | qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, |
| 1262 | FCP_TMF_CMPL, true); |
| 1263 | } |
| 1264 | |
| 1265 | /* ha->hardware_lock supposed to be held on entry */ |
| 1266 | static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, |
| 1267 | struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess) |
| 1268 | { |
| 1269 | struct qla_hw_data *ha = vha->hw; |
| 1270 | struct qla_tgt_mgmt_cmd *mcmd; |
| 1271 | int rc; |
| 1272 | |
| 1273 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, |
| 1274 | "qla_target(%d): task abort (tag=%d)\n", |
| 1275 | vha->vp_idx, abts->exchange_addr_to_abort); |
| 1276 | |
| 1277 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); |
| 1278 | if (mcmd == NULL) { |
| 1279 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, |
| 1280 | "qla_target(%d): %s: Allocation of ABORT cmd failed", |
| 1281 | vha->vp_idx, __func__); |
| 1282 | return -ENOMEM; |
| 1283 | } |
| 1284 | memset(mcmd, 0, sizeof(*mcmd)); |
| 1285 | |
| 1286 | mcmd->sess = sess; |
| 1287 | memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); |
| 1288 | |
| 1289 | rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, TMR_ABORT_TASK, |
| 1290 | abts->exchange_addr_to_abort); |
| 1291 | if (rc != 0) { |
| 1292 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, |
| 1293 | "qla_target(%d): tgt_ops->handle_tmr()" |
| 1294 | " failed: %d", vha->vp_idx, rc); |
| 1295 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| 1296 | return -EFAULT; |
| 1297 | } |
| 1298 | |
| 1299 | return 0; |
| 1300 | } |
| 1301 | |
| 1302 | /* |
| 1303 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 1304 | */ |
| 1305 | static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, |
| 1306 | struct abts_recv_from_24xx *abts) |
| 1307 | { |
| 1308 | struct qla_hw_data *ha = vha->hw; |
| 1309 | struct qla_tgt_sess *sess; |
| 1310 | uint32_t tag = abts->exchange_addr_to_abort; |
| 1311 | uint8_t s_id[3]; |
| 1312 | int rc; |
| 1313 | |
| 1314 | if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { |
| 1315 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, |
| 1316 | "qla_target(%d): ABTS: Abort Sequence not " |
| 1317 | "supported\n", vha->vp_idx); |
| 1318 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); |
| 1319 | return; |
| 1320 | } |
| 1321 | |
| 1322 | if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { |
| 1323 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, |
| 1324 | "qla_target(%d): ABTS: Unknown Exchange " |
| 1325 | "Address received\n", vha->vp_idx); |
| 1326 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); |
| 1327 | return; |
| 1328 | } |
| 1329 | |
| 1330 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, |
| 1331 | "qla_target(%d): task abort (s_id=%x:%x:%x, " |
| 1332 | "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], |
| 1333 | abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, |
| 1334 | le32_to_cpu(abts->fcp_hdr_le.parameter)); |
| 1335 | |
| 1336 | s_id[0] = abts->fcp_hdr_le.s_id[2]; |
| 1337 | s_id[1] = abts->fcp_hdr_le.s_id[1]; |
| 1338 | s_id[2] = abts->fcp_hdr_le.s_id[0]; |
| 1339 | |
| 1340 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); |
| 1341 | if (!sess) { |
| 1342 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, |
| 1343 | "qla_target(%d): task abort for non-existant session\n", |
| 1344 | vha->vp_idx); |
| 1345 | rc = qlt_sched_sess_work(ha->tgt.qla_tgt, |
| 1346 | QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); |
| 1347 | if (rc != 0) { |
| 1348 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, |
| 1349 | false); |
| 1350 | } |
| 1351 | return; |
| 1352 | } |
| 1353 | |
| 1354 | rc = __qlt_24xx_handle_abts(vha, abts, sess); |
| 1355 | if (rc != 0) { |
| 1356 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, |
| 1357 | "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", |
| 1358 | vha->vp_idx, rc); |
| 1359 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); |
| 1360 | return; |
| 1361 | } |
| 1362 | } |
| 1363 | |
| 1364 | /* |
| 1365 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 1366 | */ |
| 1367 | static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, |
| 1368 | struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) |
| 1369 | { |
| 1370 | struct atio_from_isp *atio = &mcmd->orig_iocb.atio; |
| 1371 | struct ctio7_to_24xx *ctio; |
| 1372 | |
| 1373 | ql_dbg(ql_dbg_tgt, ha, 0xe008, |
| 1374 | "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", |
| 1375 | ha, atio, resp_code); |
| 1376 | |
| 1377 | /* Send marker if required */ |
| 1378 | if (qlt_issue_marker(ha, 1) != QLA_SUCCESS) |
| 1379 | return; |
| 1380 | |
| 1381 | ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL); |
| 1382 | if (ctio == NULL) { |
| 1383 | ql_dbg(ql_dbg_tgt, ha, 0xe04c, |
| 1384 | "qla_target(%d): %s failed: unable to allocate " |
| 1385 | "request packet\n", ha->vp_idx, __func__); |
| 1386 | return; |
| 1387 | } |
| 1388 | |
| 1389 | ctio->entry_type = CTIO_TYPE7; |
| 1390 | ctio->entry_count = 1; |
| 1391 | ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| 1392 | ctio->nport_handle = mcmd->sess->loop_id; |
| 1393 | ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); |
| 1394 | ctio->vp_index = ha->vp_idx; |
| 1395 | ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; |
| 1396 | ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; |
| 1397 | ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; |
| 1398 | ctio->exchange_addr = atio->u.isp24.exchange_addr; |
| 1399 | ctio->u.status1.flags = (atio->u.isp24.attr << 9) | |
| 1400 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | |
| 1401 | CTIO7_FLAGS_SEND_STATUS); |
| 1402 | ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); |
| 1403 | ctio->u.status1.scsi_status = |
| 1404 | __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); |
| 1405 | ctio->u.status1.response_len = __constant_cpu_to_le16(8); |
| 1406 | ((uint32_t *)ctio->u.status1.sense_data)[0] = cpu_to_be32(resp_code); |
| 1407 | |
| 1408 | qla2x00_start_iocbs(ha, ha->req); |
| 1409 | } |
| 1410 | |
| 1411 | void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) |
| 1412 | { |
| 1413 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| 1414 | } |
| 1415 | EXPORT_SYMBOL(qlt_free_mcmd); |
| 1416 | |
| 1417 | /* callback from target fabric module code */ |
| 1418 | void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) |
| 1419 | { |
| 1420 | struct scsi_qla_host *vha = mcmd->sess->vha; |
| 1421 | struct qla_hw_data *ha = vha->hw; |
| 1422 | unsigned long flags; |
| 1423 | |
| 1424 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, |
| 1425 | "TM response mcmd (%p) status %#x state %#x", |
| 1426 | mcmd, mcmd->fc_tm_rsp, mcmd->flags); |
| 1427 | |
| 1428 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1429 | if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) |
| 1430 | qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, |
| 1431 | 0, 0, 0, 0, 0, 0); |
| 1432 | else { |
| 1433 | if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK) |
| 1434 | qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, |
| 1435 | mcmd->fc_tm_rsp, false); |
| 1436 | else |
| 1437 | qlt_24xx_send_task_mgmt_ctio(vha, mcmd, |
| 1438 | mcmd->fc_tm_rsp); |
| 1439 | } |
| 1440 | /* |
| 1441 | * Make the callback for ->free_mcmd() to queue_work() and invoke |
| 1442 | * target_put_sess_cmd() to drop cmd_kref to 1. The final |
| 1443 | * target_put_sess_cmd() call will be made from TFO->check_stop_free() |
| 1444 | * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd |
| 1445 | * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> |
| 1446 | * qlt_xmit_tm_rsp() returns here.. |
| 1447 | */ |
| 1448 | ha->tgt.tgt_ops->free_mcmd(mcmd); |
| 1449 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1450 | } |
| 1451 | EXPORT_SYMBOL(qlt_xmit_tm_rsp); |
| 1452 | |
| 1453 | /* No locks */ |
| 1454 | static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) |
| 1455 | { |
| 1456 | struct qla_tgt_cmd *cmd = prm->cmd; |
| 1457 | |
| 1458 | BUG_ON(cmd->sg_cnt == 0); |
| 1459 | |
| 1460 | prm->sg = (struct scatterlist *)cmd->sg; |
| 1461 | prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg, |
| 1462 | cmd->sg_cnt, cmd->dma_data_direction); |
| 1463 | if (unlikely(prm->seg_cnt == 0)) |
| 1464 | goto out_err; |
| 1465 | |
| 1466 | prm->cmd->sg_mapped = 1; |
| 1467 | |
| 1468 | /* |
| 1469 | * If greater than four sg entries then we need to allocate |
| 1470 | * the continuation entries |
| 1471 | */ |
| 1472 | if (prm->seg_cnt > prm->tgt->datasegs_per_cmd) |
| 1473 | prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - |
| 1474 | prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont); |
| 1475 | |
| 1476 | ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n", |
| 1477 | prm->seg_cnt, prm->req_cnt); |
| 1478 | return 0; |
| 1479 | |
| 1480 | out_err: |
| 1481 | ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, |
| 1482 | "qla_target(%d): PCI mapping failed: sg_cnt=%d", |
| 1483 | 0, prm->cmd->sg_cnt); |
| 1484 | return -1; |
| 1485 | } |
| 1486 | |
| 1487 | static inline void qlt_unmap_sg(struct scsi_qla_host *vha, |
| 1488 | struct qla_tgt_cmd *cmd) |
| 1489 | { |
| 1490 | struct qla_hw_data *ha = vha->hw; |
| 1491 | |
| 1492 | BUG_ON(!cmd->sg_mapped); |
| 1493 | pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); |
| 1494 | cmd->sg_mapped = 0; |
| 1495 | } |
| 1496 | |
| 1497 | static int qlt_check_reserve_free_req(struct scsi_qla_host *vha, |
| 1498 | uint32_t req_cnt) |
| 1499 | { |
| 1500 | struct qla_hw_data *ha = vha->hw; |
| 1501 | device_reg_t __iomem *reg = ha->iobase; |
| 1502 | uint32_t cnt; |
| 1503 | |
| 1504 | if (vha->req->cnt < (req_cnt + 2)) { |
| 1505 | cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out); |
| 1506 | |
| 1507 | ql_dbg(ql_dbg_tgt, vha, 0xe00a, |
| 1508 | "Request ring circled: cnt=%d, vha->->ring_index=%d, " |
| 1509 | "vha->req->cnt=%d, req_cnt=%d\n", cnt, |
| 1510 | vha->req->ring_index, vha->req->cnt, req_cnt); |
| 1511 | if (vha->req->ring_index < cnt) |
| 1512 | vha->req->cnt = cnt - vha->req->ring_index; |
| 1513 | else |
| 1514 | vha->req->cnt = vha->req->length - |
| 1515 | (vha->req->ring_index - cnt); |
| 1516 | } |
| 1517 | |
| 1518 | if (unlikely(vha->req->cnt < (req_cnt + 2))) { |
| 1519 | ql_dbg(ql_dbg_tgt, vha, 0xe00b, |
| 1520 | "qla_target(%d): There is no room in the " |
| 1521 | "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, " |
| 1522 | "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index, |
| 1523 | vha->req->cnt, req_cnt); |
| 1524 | return -EAGAIN; |
| 1525 | } |
| 1526 | vha->req->cnt -= req_cnt; |
| 1527 | |
| 1528 | return 0; |
| 1529 | } |
| 1530 | |
| 1531 | /* |
| 1532 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 1533 | */ |
| 1534 | static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha) |
| 1535 | { |
| 1536 | /* Adjust ring index. */ |
| 1537 | vha->req->ring_index++; |
| 1538 | if (vha->req->ring_index == vha->req->length) { |
| 1539 | vha->req->ring_index = 0; |
| 1540 | vha->req->ring_ptr = vha->req->ring; |
| 1541 | } else { |
| 1542 | vha->req->ring_ptr++; |
| 1543 | } |
| 1544 | return (cont_entry_t *)vha->req->ring_ptr; |
| 1545 | } |
| 1546 | |
| 1547 | /* ha->hardware_lock supposed to be held on entry */ |
| 1548 | static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha) |
| 1549 | { |
| 1550 | struct qla_hw_data *ha = vha->hw; |
| 1551 | uint32_t h; |
| 1552 | |
| 1553 | h = ha->tgt.current_handle; |
| 1554 | /* always increment cmd handle */ |
| 1555 | do { |
| 1556 | ++h; |
| 1557 | if (h > MAX_OUTSTANDING_COMMANDS) |
| 1558 | h = 1; /* 0 is QLA_TGT_NULL_HANDLE */ |
| 1559 | if (h == ha->tgt.current_handle) { |
| 1560 | ql_dbg(ql_dbg_tgt, vha, 0xe04e, |
| 1561 | "qla_target(%d): Ran out of " |
| 1562 | "empty cmd slots in ha %p\n", vha->vp_idx, ha); |
| 1563 | h = QLA_TGT_NULL_HANDLE; |
| 1564 | break; |
| 1565 | } |
| 1566 | } while ((h == QLA_TGT_NULL_HANDLE) || |
| 1567 | (h == QLA_TGT_SKIP_HANDLE) || |
| 1568 | (ha->tgt.cmds[h-1] != NULL)); |
| 1569 | |
| 1570 | if (h != QLA_TGT_NULL_HANDLE) |
| 1571 | ha->tgt.current_handle = h; |
| 1572 | |
| 1573 | return h; |
| 1574 | } |
| 1575 | |
| 1576 | /* ha->hardware_lock supposed to be held on entry */ |
| 1577 | static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, |
| 1578 | struct scsi_qla_host *vha) |
| 1579 | { |
| 1580 | uint32_t h; |
| 1581 | struct ctio7_to_24xx *pkt; |
| 1582 | struct qla_hw_data *ha = vha->hw; |
| 1583 | struct atio_from_isp *atio = &prm->cmd->atio; |
| 1584 | |
| 1585 | pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr; |
| 1586 | prm->pkt = pkt; |
| 1587 | memset(pkt, 0, sizeof(*pkt)); |
| 1588 | |
| 1589 | pkt->entry_type = CTIO_TYPE7; |
| 1590 | pkt->entry_count = (uint8_t)prm->req_cnt; |
| 1591 | pkt->vp_index = vha->vp_idx; |
| 1592 | |
| 1593 | h = qlt_make_handle(vha); |
| 1594 | if (unlikely(h == QLA_TGT_NULL_HANDLE)) { |
| 1595 | /* |
| 1596 | * CTIO type 7 from the firmware doesn't provide a way to |
| 1597 | * know the initiator's LOOP ID, hence we can't find |
| 1598 | * the session and, so, the command. |
| 1599 | */ |
| 1600 | return -EAGAIN; |
| 1601 | } else |
| 1602 | ha->tgt.cmds[h-1] = prm->cmd; |
| 1603 | |
| 1604 | pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; |
| 1605 | pkt->nport_handle = prm->cmd->loop_id; |
| 1606 | pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); |
| 1607 | pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; |
| 1608 | pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; |
| 1609 | pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; |
| 1610 | pkt->exchange_addr = atio->u.isp24.exchange_addr; |
| 1611 | pkt->u.status0.flags |= (atio->u.isp24.attr << 9); |
| 1612 | pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); |
| 1613 | pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); |
| 1614 | |
| 1615 | ql_dbg(ql_dbg_tgt, vha, 0xe00c, |
| 1616 | "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n", |
| 1617 | vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT, |
| 1618 | le16_to_cpu(pkt->u.status0.ox_id)); |
| 1619 | return 0; |
| 1620 | } |
| 1621 | |
| 1622 | /* |
| 1623 | * ha->hardware_lock supposed to be held on entry. We have already made sure |
| 1624 | * that there is sufficient amount of request entries to not drop it. |
| 1625 | */ |
| 1626 | static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm, |
| 1627 | struct scsi_qla_host *vha) |
| 1628 | { |
| 1629 | int cnt; |
| 1630 | uint32_t *dword_ptr; |
| 1631 | int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; |
| 1632 | |
| 1633 | /* Build continuation packets */ |
| 1634 | while (prm->seg_cnt > 0) { |
| 1635 | cont_a64_entry_t *cont_pkt64 = |
| 1636 | (cont_a64_entry_t *)qlt_get_req_pkt(vha); |
| 1637 | |
| 1638 | /* |
| 1639 | * Make sure that from cont_pkt64 none of |
| 1640 | * 64-bit specific fields used for 32-bit |
| 1641 | * addressing. Cast to (cont_entry_t *) for |
| 1642 | * that. |
| 1643 | */ |
| 1644 | |
| 1645 | memset(cont_pkt64, 0, sizeof(*cont_pkt64)); |
| 1646 | |
| 1647 | cont_pkt64->entry_count = 1; |
| 1648 | cont_pkt64->sys_define = 0; |
| 1649 | |
| 1650 | if (enable_64bit_addressing) { |
| 1651 | cont_pkt64->entry_type = CONTINUE_A64_TYPE; |
| 1652 | dword_ptr = |
| 1653 | (uint32_t *)&cont_pkt64->dseg_0_address; |
| 1654 | } else { |
| 1655 | cont_pkt64->entry_type = CONTINUE_TYPE; |
| 1656 | dword_ptr = |
| 1657 | (uint32_t *)&((cont_entry_t *) |
| 1658 | cont_pkt64)->dseg_0_address; |
| 1659 | } |
| 1660 | |
| 1661 | /* Load continuation entry data segments */ |
| 1662 | for (cnt = 0; |
| 1663 | cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt; |
| 1664 | cnt++, prm->seg_cnt--) { |
| 1665 | *dword_ptr++ = |
| 1666 | cpu_to_le32(pci_dma_lo32 |
| 1667 | (sg_dma_address(prm->sg))); |
| 1668 | if (enable_64bit_addressing) { |
| 1669 | *dword_ptr++ = |
| 1670 | cpu_to_le32(pci_dma_hi32 |
| 1671 | (sg_dma_address |
| 1672 | (prm->sg))); |
| 1673 | } |
| 1674 | *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); |
| 1675 | |
| 1676 | ql_dbg(ql_dbg_tgt, vha, 0xe00d, |
| 1677 | "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n", |
| 1678 | (long long unsigned int) |
| 1679 | pci_dma_hi32(sg_dma_address(prm->sg)), |
| 1680 | (long long unsigned int) |
| 1681 | pci_dma_lo32(sg_dma_address(prm->sg)), |
| 1682 | (int)sg_dma_len(prm->sg)); |
| 1683 | |
| 1684 | prm->sg = sg_next(prm->sg); |
| 1685 | } |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | /* |
| 1690 | * ha->hardware_lock supposed to be held on entry. We have already made sure |
| 1691 | * that there is sufficient amount of request entries to not drop it. |
| 1692 | */ |
| 1693 | static void qlt_load_data_segments(struct qla_tgt_prm *prm, |
| 1694 | struct scsi_qla_host *vha) |
| 1695 | { |
| 1696 | int cnt; |
| 1697 | uint32_t *dword_ptr; |
| 1698 | int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; |
| 1699 | struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; |
| 1700 | |
| 1701 | ql_dbg(ql_dbg_tgt, vha, 0xe00e, |
| 1702 | "iocb->scsi_status=%x, iocb->flags=%x\n", |
| 1703 | le16_to_cpu(pkt24->u.status0.scsi_status), |
| 1704 | le16_to_cpu(pkt24->u.status0.flags)); |
| 1705 | |
| 1706 | pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); |
| 1707 | |
| 1708 | /* Setup packet address segment pointer */ |
| 1709 | dword_ptr = pkt24->u.status0.dseg_0_address; |
| 1710 | |
| 1711 | /* Set total data segment count */ |
| 1712 | if (prm->seg_cnt) |
| 1713 | pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); |
| 1714 | |
| 1715 | if (prm->seg_cnt == 0) { |
| 1716 | /* No data transfer */ |
| 1717 | *dword_ptr++ = 0; |
| 1718 | *dword_ptr = 0; |
| 1719 | return; |
| 1720 | } |
| 1721 | |
| 1722 | /* If scatter gather */ |
| 1723 | ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments..."); |
| 1724 | |
| 1725 | /* Load command entry data segments */ |
| 1726 | for (cnt = 0; |
| 1727 | (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt; |
| 1728 | cnt++, prm->seg_cnt--) { |
| 1729 | *dword_ptr++ = |
| 1730 | cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); |
| 1731 | if (enable_64bit_addressing) { |
| 1732 | *dword_ptr++ = |
| 1733 | cpu_to_le32(pci_dma_hi32( |
| 1734 | sg_dma_address(prm->sg))); |
| 1735 | } |
| 1736 | *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); |
| 1737 | |
| 1738 | ql_dbg(ql_dbg_tgt, vha, 0xe010, |
| 1739 | "S/G Segment phys_addr=%llx:%llx, len=%d\n", |
| 1740 | (long long unsigned int)pci_dma_hi32(sg_dma_address( |
| 1741 | prm->sg)), |
| 1742 | (long long unsigned int)pci_dma_lo32(sg_dma_address( |
| 1743 | prm->sg)), |
| 1744 | (int)sg_dma_len(prm->sg)); |
| 1745 | |
| 1746 | prm->sg = sg_next(prm->sg); |
| 1747 | } |
| 1748 | |
| 1749 | qlt_load_cont_data_segments(prm, vha); |
| 1750 | } |
| 1751 | |
| 1752 | static inline int qlt_has_data(struct qla_tgt_cmd *cmd) |
| 1753 | { |
| 1754 | return cmd->bufflen > 0; |
| 1755 | } |
| 1756 | |
| 1757 | /* |
| 1758 | * Called without ha->hardware_lock held |
| 1759 | */ |
| 1760 | static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, |
| 1761 | struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, |
| 1762 | uint32_t *full_req_cnt) |
| 1763 | { |
| 1764 | struct qla_tgt *tgt = cmd->tgt; |
| 1765 | struct scsi_qla_host *vha = tgt->vha; |
| 1766 | struct qla_hw_data *ha = vha->hw; |
| 1767 | struct se_cmd *se_cmd = &cmd->se_cmd; |
| 1768 | |
| 1769 | if (unlikely(cmd->aborted)) { |
| 1770 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, |
| 1771 | "qla_target(%d): terminating exchange " |
| 1772 | "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd, |
| 1773 | se_cmd, cmd->tag); |
| 1774 | |
| 1775 | cmd->state = QLA_TGT_STATE_ABORTED; |
| 1776 | |
| 1777 | qlt_send_term_exchange(vha, cmd, &cmd->atio, 0); |
| 1778 | |
| 1779 | /* !! At this point cmd could be already freed !! */ |
| 1780 | return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED; |
| 1781 | } |
| 1782 | |
| 1783 | ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n", |
| 1784 | vha->vp_idx, cmd->tag); |
| 1785 | |
| 1786 | prm->cmd = cmd; |
| 1787 | prm->tgt = tgt; |
| 1788 | prm->rq_result = scsi_status; |
| 1789 | prm->sense_buffer = &cmd->sense_buffer[0]; |
| 1790 | prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; |
| 1791 | prm->sg = NULL; |
| 1792 | prm->seg_cnt = -1; |
| 1793 | prm->req_cnt = 1; |
| 1794 | prm->add_status_pkt = 0; |
| 1795 | |
| 1796 | ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n", |
| 1797 | prm->rq_result, xmit_type); |
| 1798 | |
| 1799 | /* Send marker if required */ |
| 1800 | if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) |
| 1801 | return -EFAULT; |
| 1802 | |
| 1803 | ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx); |
| 1804 | |
| 1805 | if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { |
| 1806 | if (qlt_pci_map_calc_cnt(prm) != 0) |
| 1807 | return -EAGAIN; |
| 1808 | } |
| 1809 | |
| 1810 | *full_req_cnt = prm->req_cnt; |
| 1811 | |
| 1812 | if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { |
| 1813 | prm->residual = se_cmd->residual_count; |
| 1814 | ql_dbg(ql_dbg_tgt, vha, 0xe014, |
| 1815 | "Residual underflow: %d (tag %d, " |
| 1816 | "op %x, bufflen %d, rq_result %x)\n", prm->residual, |
| 1817 | cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, |
| 1818 | cmd->bufflen, prm->rq_result); |
| 1819 | prm->rq_result |= SS_RESIDUAL_UNDER; |
| 1820 | } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { |
| 1821 | prm->residual = se_cmd->residual_count; |
| 1822 | ql_dbg(ql_dbg_tgt, vha, 0xe015, |
| 1823 | "Residual overflow: %d (tag %d, " |
| 1824 | "op %x, bufflen %d, rq_result %x)\n", prm->residual, |
| 1825 | cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, |
| 1826 | cmd->bufflen, prm->rq_result); |
| 1827 | prm->rq_result |= SS_RESIDUAL_OVER; |
| 1828 | } |
| 1829 | |
| 1830 | if (xmit_type & QLA_TGT_XMIT_STATUS) { |
| 1831 | /* |
| 1832 | * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be |
| 1833 | * ignored in *xmit_response() below |
| 1834 | */ |
| 1835 | if (qlt_has_data(cmd)) { |
| 1836 | if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || |
| 1837 | (IS_FWI2_CAPABLE(ha) && |
| 1838 | (prm->rq_result != 0))) { |
| 1839 | prm->add_status_pkt = 1; |
| 1840 | (*full_req_cnt)++; |
| 1841 | } |
| 1842 | } |
| 1843 | } |
| 1844 | |
| 1845 | ql_dbg(ql_dbg_tgt, vha, 0xe016, |
| 1846 | "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n", |
| 1847 | prm->req_cnt, *full_req_cnt, prm->add_status_pkt); |
| 1848 | |
| 1849 | return 0; |
| 1850 | } |
| 1851 | |
| 1852 | static inline int qlt_need_explicit_conf(struct qla_hw_data *ha, |
| 1853 | struct qla_tgt_cmd *cmd, int sending_sense) |
| 1854 | { |
| 1855 | if (ha->tgt.enable_class_2) |
| 1856 | return 0; |
| 1857 | |
| 1858 | if (sending_sense) |
| 1859 | return cmd->conf_compl_supported; |
| 1860 | else |
| 1861 | return ha->tgt.enable_explicit_conf && |
| 1862 | cmd->conf_compl_supported; |
| 1863 | } |
| 1864 | |
| 1865 | #ifdef CONFIG_QLA_TGT_DEBUG_SRR |
| 1866 | /* |
| 1867 | * Original taken from the XFS code |
| 1868 | */ |
| 1869 | static unsigned long qlt_srr_random(void) |
| 1870 | { |
| 1871 | static int Inited; |
| 1872 | static unsigned long RandomValue; |
| 1873 | static DEFINE_SPINLOCK(lock); |
| 1874 | /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ |
| 1875 | register long rv; |
| 1876 | register long lo; |
| 1877 | register long hi; |
| 1878 | unsigned long flags; |
| 1879 | |
| 1880 | spin_lock_irqsave(&lock, flags); |
| 1881 | if (!Inited) { |
| 1882 | RandomValue = jiffies; |
| 1883 | Inited = 1; |
| 1884 | } |
| 1885 | rv = RandomValue; |
| 1886 | hi = rv / 127773; |
| 1887 | lo = rv % 127773; |
| 1888 | rv = 16807 * lo - 2836 * hi; |
| 1889 | if (rv <= 0) |
| 1890 | rv += 2147483647; |
| 1891 | RandomValue = rv; |
| 1892 | spin_unlock_irqrestore(&lock, flags); |
| 1893 | return rv; |
| 1894 | } |
| 1895 | |
| 1896 | static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) |
| 1897 | { |
| 1898 | #if 0 /* This is not a real status packets lost, so it won't lead to SRR */ |
| 1899 | if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200) |
| 1900 | == 50) { |
| 1901 | *xmit_type &= ~QLA_TGT_XMIT_STATUS; |
| 1902 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015, |
| 1903 | "Dropping cmd %p (tag %d) status", cmd, cmd->tag); |
| 1904 | } |
| 1905 | #endif |
| 1906 | /* |
| 1907 | * It's currently not possible to simulate SRRs for FCP_WRITE without |
| 1908 | * a physical link layer failure, so don't even try here.. |
| 1909 | */ |
| 1910 | if (cmd->dma_data_direction != DMA_FROM_DEVICE) |
| 1911 | return; |
| 1912 | |
| 1913 | if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) && |
| 1914 | ((qlt_srr_random() % 100) == 20)) { |
| 1915 | int i, leave = 0; |
| 1916 | unsigned int tot_len = 0; |
| 1917 | |
| 1918 | while (leave == 0) |
| 1919 | leave = qlt_srr_random() % cmd->sg_cnt; |
| 1920 | |
| 1921 | for (i = 0; i < leave; i++) |
| 1922 | tot_len += cmd->sg[i].length; |
| 1923 | |
| 1924 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016, |
| 1925 | "Cutting cmd %p (tag %d) buffer" |
| 1926 | " tail to len %d, sg_cnt %d (cmd->bufflen %d," |
| 1927 | " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave, |
| 1928 | cmd->bufflen, cmd->sg_cnt); |
| 1929 | |
| 1930 | cmd->bufflen = tot_len; |
| 1931 | cmd->sg_cnt = leave; |
| 1932 | } |
| 1933 | |
| 1934 | if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) { |
| 1935 | unsigned int offset = qlt_srr_random() % cmd->bufflen; |
| 1936 | |
| 1937 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017, |
| 1938 | "Cutting cmd %p (tag %d) buffer head " |
| 1939 | "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset, |
| 1940 | cmd->bufflen); |
| 1941 | if (offset == 0) |
| 1942 | *xmit_type &= ~QLA_TGT_XMIT_DATA; |
| 1943 | else if (qlt_set_data_offset(cmd, offset)) { |
| 1944 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018, |
| 1945 | "qlt_set_data_offset() failed (tag %d)", cmd->tag); |
| 1946 | } |
| 1947 | } |
| 1948 | } |
| 1949 | #else |
| 1950 | static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) |
| 1951 | {} |
| 1952 | #endif |
| 1953 | |
| 1954 | static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, |
| 1955 | struct qla_tgt_prm *prm) |
| 1956 | { |
| 1957 | prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, |
| 1958 | (uint32_t)sizeof(ctio->u.status1.sense_data)); |
| 1959 | ctio->u.status0.flags |= |
| 1960 | __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); |
| 1961 | if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) { |
| 1962 | ctio->u.status0.flags |= __constant_cpu_to_le16( |
| 1963 | CTIO7_FLAGS_EXPLICIT_CONFORM | |
| 1964 | CTIO7_FLAGS_CONFORM_REQ); |
| 1965 | } |
| 1966 | ctio->u.status0.residual = cpu_to_le32(prm->residual); |
| 1967 | ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); |
| 1968 | if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { |
| 1969 | int i; |
| 1970 | |
| 1971 | if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) { |
| 1972 | if (prm->cmd->se_cmd.scsi_status != 0) { |
| 1973 | ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, |
| 1974 | "Skipping EXPLICIT_CONFORM and " |
| 1975 | "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " |
| 1976 | "non GOOD status\n"); |
| 1977 | goto skip_explict_conf; |
| 1978 | } |
| 1979 | ctio->u.status1.flags |= __constant_cpu_to_le16( |
| 1980 | CTIO7_FLAGS_EXPLICIT_CONFORM | |
| 1981 | CTIO7_FLAGS_CONFORM_REQ); |
| 1982 | } |
| 1983 | skip_explict_conf: |
| 1984 | ctio->u.status1.flags &= |
| 1985 | ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); |
| 1986 | ctio->u.status1.flags |= |
| 1987 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); |
| 1988 | ctio->u.status1.scsi_status |= |
| 1989 | __constant_cpu_to_le16(SS_SENSE_LEN_VALID); |
| 1990 | ctio->u.status1.sense_length = |
| 1991 | cpu_to_le16(prm->sense_buffer_len); |
| 1992 | for (i = 0; i < prm->sense_buffer_len/4; i++) |
| 1993 | ((uint32_t *)ctio->u.status1.sense_data)[i] = |
| 1994 | cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); |
| 1995 | #if 0 |
| 1996 | if (unlikely((prm->sense_buffer_len % 4) != 0)) { |
| 1997 | static int q; |
| 1998 | if (q < 10) { |
| 1999 | ql_dbg(ql_dbg_tgt, vha, 0xe04f, |
| 2000 | "qla_target(%d): %d bytes of sense " |
| 2001 | "lost", prm->tgt->ha->vp_idx, |
| 2002 | prm->sense_buffer_len % 4); |
| 2003 | q++; |
| 2004 | } |
| 2005 | } |
| 2006 | #endif |
| 2007 | } else { |
| 2008 | ctio->u.status1.flags &= |
| 2009 | ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); |
| 2010 | ctio->u.status1.flags |= |
| 2011 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); |
| 2012 | ctio->u.status1.sense_length = 0; |
| 2013 | memset(ctio->u.status1.sense_data, 0, |
| 2014 | sizeof(ctio->u.status1.sense_data)); |
| 2015 | } |
| 2016 | |
| 2017 | /* Sense with len > 24, is it possible ??? */ |
| 2018 | } |
| 2019 | |
| 2020 | /* |
| 2021 | * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * |
| 2022 | * QLA_TGT_XMIT_STATUS for >= 24xx silicon |
| 2023 | */ |
| 2024 | int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, |
| 2025 | uint8_t scsi_status) |
| 2026 | { |
| 2027 | struct scsi_qla_host *vha = cmd->vha; |
| 2028 | struct qla_hw_data *ha = vha->hw; |
| 2029 | struct ctio7_to_24xx *pkt; |
| 2030 | struct qla_tgt_prm prm; |
| 2031 | uint32_t full_req_cnt = 0; |
| 2032 | unsigned long flags = 0; |
| 2033 | int res; |
| 2034 | |
| 2035 | memset(&prm, 0, sizeof(prm)); |
| 2036 | qlt_check_srr_debug(cmd, &xmit_type); |
| 2037 | |
| 2038 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, |
| 2039 | "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, " |
| 2040 | "cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ? |
| 2041 | 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction); |
| 2042 | |
| 2043 | res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, |
| 2044 | &full_req_cnt); |
| 2045 | if (unlikely(res != 0)) { |
| 2046 | if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED) |
| 2047 | return 0; |
| 2048 | |
| 2049 | return res; |
| 2050 | } |
| 2051 | |
| 2052 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 2053 | |
| 2054 | /* Does F/W have an IOCBs for this request */ |
| 2055 | res = qlt_check_reserve_free_req(vha, full_req_cnt); |
| 2056 | if (unlikely(res)) |
| 2057 | goto out_unmap_unlock; |
| 2058 | |
| 2059 | res = qlt_24xx_build_ctio_pkt(&prm, vha); |
| 2060 | if (unlikely(res != 0)) |
| 2061 | goto out_unmap_unlock; |
| 2062 | |
| 2063 | |
| 2064 | pkt = (struct ctio7_to_24xx *)prm.pkt; |
| 2065 | |
| 2066 | if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { |
| 2067 | pkt->u.status0.flags |= |
| 2068 | __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN | |
| 2069 | CTIO7_FLAGS_STATUS_MODE_0); |
| 2070 | |
| 2071 | qlt_load_data_segments(&prm, vha); |
| 2072 | |
| 2073 | if (prm.add_status_pkt == 0) { |
| 2074 | if (xmit_type & QLA_TGT_XMIT_STATUS) { |
| 2075 | pkt->u.status0.scsi_status = |
| 2076 | cpu_to_le16(prm.rq_result); |
| 2077 | pkt->u.status0.residual = |
| 2078 | cpu_to_le32(prm.residual); |
| 2079 | pkt->u.status0.flags |= __constant_cpu_to_le16( |
| 2080 | CTIO7_FLAGS_SEND_STATUS); |
| 2081 | if (qlt_need_explicit_conf(ha, cmd, 0)) { |
| 2082 | pkt->u.status0.flags |= |
| 2083 | __constant_cpu_to_le16( |
| 2084 | CTIO7_FLAGS_EXPLICIT_CONFORM | |
| 2085 | CTIO7_FLAGS_CONFORM_REQ); |
| 2086 | } |
| 2087 | } |
| 2088 | |
| 2089 | } else { |
| 2090 | /* |
| 2091 | * We have already made sure that there is sufficient |
| 2092 | * amount of request entries to not drop HW lock in |
| 2093 | * req_pkt(). |
| 2094 | */ |
| 2095 | struct ctio7_to_24xx *ctio = |
| 2096 | (struct ctio7_to_24xx *)qlt_get_req_pkt(vha); |
| 2097 | |
| 2098 | ql_dbg(ql_dbg_tgt, vha, 0xe019, |
| 2099 | "Building additional status packet\n"); |
| 2100 | |
| 2101 | memcpy(ctio, pkt, sizeof(*ctio)); |
| 2102 | ctio->entry_count = 1; |
| 2103 | ctio->dseg_count = 0; |
| 2104 | ctio->u.status1.flags &= ~__constant_cpu_to_le16( |
| 2105 | CTIO7_FLAGS_DATA_IN); |
| 2106 | |
| 2107 | /* Real finish is ctio_m1's finish */ |
| 2108 | pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; |
| 2109 | pkt->u.status0.flags |= __constant_cpu_to_le16( |
| 2110 | CTIO7_FLAGS_DONT_RET_CTIO); |
| 2111 | qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, |
| 2112 | &prm); |
| 2113 | pr_debug("Status CTIO7: %p\n", ctio); |
| 2114 | } |
| 2115 | } else |
| 2116 | qlt_24xx_init_ctio_to_isp(pkt, &prm); |
| 2117 | |
| 2118 | |
| 2119 | cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ |
| 2120 | |
| 2121 | ql_dbg(ql_dbg_tgt, vha, 0xe01a, |
| 2122 | "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n", |
| 2123 | pkt, scsi_status); |
| 2124 | |
| 2125 | qla2x00_start_iocbs(vha, vha->req); |
| 2126 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 2127 | |
| 2128 | return 0; |
| 2129 | |
| 2130 | out_unmap_unlock: |
| 2131 | if (cmd->sg_mapped) |
| 2132 | qlt_unmap_sg(vha, cmd); |
| 2133 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 2134 | |
| 2135 | return res; |
| 2136 | } |
| 2137 | EXPORT_SYMBOL(qlt_xmit_response); |
| 2138 | |
| 2139 | int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) |
| 2140 | { |
| 2141 | struct ctio7_to_24xx *pkt; |
| 2142 | struct scsi_qla_host *vha = cmd->vha; |
| 2143 | struct qla_hw_data *ha = vha->hw; |
| 2144 | struct qla_tgt *tgt = cmd->tgt; |
| 2145 | struct qla_tgt_prm prm; |
| 2146 | unsigned long flags; |
| 2147 | int res = 0; |
| 2148 | |
| 2149 | memset(&prm, 0, sizeof(prm)); |
| 2150 | prm.cmd = cmd; |
| 2151 | prm.tgt = tgt; |
| 2152 | prm.sg = NULL; |
| 2153 | prm.req_cnt = 1; |
| 2154 | |
| 2155 | /* Send marker if required */ |
| 2156 | if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) |
| 2157 | return -EIO; |
| 2158 | |
| 2159 | ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)", |
| 2160 | (int)vha->vp_idx); |
| 2161 | |
| 2162 | /* Calculate number of entries and segments required */ |
| 2163 | if (qlt_pci_map_calc_cnt(&prm) != 0) |
| 2164 | return -EAGAIN; |
| 2165 | |
| 2166 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 2167 | |
| 2168 | /* Does F/W have an IOCBs for this request */ |
| 2169 | res = qlt_check_reserve_free_req(vha, prm.req_cnt); |
| 2170 | if (res != 0) |
| 2171 | goto out_unlock_free_unmap; |
| 2172 | |
| 2173 | res = qlt_24xx_build_ctio_pkt(&prm, vha); |
| 2174 | if (unlikely(res != 0)) |
| 2175 | goto out_unlock_free_unmap; |
| 2176 | pkt = (struct ctio7_to_24xx *)prm.pkt; |
| 2177 | pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT | |
| 2178 | CTIO7_FLAGS_STATUS_MODE_0); |
| 2179 | qlt_load_data_segments(&prm, vha); |
| 2180 | |
| 2181 | cmd->state = QLA_TGT_STATE_NEED_DATA; |
| 2182 | |
| 2183 | qla2x00_start_iocbs(vha, vha->req); |
| 2184 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 2185 | |
| 2186 | return res; |
| 2187 | |
| 2188 | out_unlock_free_unmap: |
| 2189 | if (cmd->sg_mapped) |
| 2190 | qlt_unmap_sg(vha, cmd); |
| 2191 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 2192 | |
| 2193 | return res; |
| 2194 | } |
| 2195 | EXPORT_SYMBOL(qlt_rdy_to_xfer); |
| 2196 | |
| 2197 | /* If hardware_lock held on entry, might drop it, then reaquire */ |
| 2198 | /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ |
| 2199 | static int __qlt_send_term_exchange(struct scsi_qla_host *vha, |
| 2200 | struct qla_tgt_cmd *cmd, |
| 2201 | struct atio_from_isp *atio) |
| 2202 | { |
| 2203 | struct ctio7_to_24xx *ctio24; |
| 2204 | struct qla_hw_data *ha = vha->hw; |
| 2205 | request_t *pkt; |
| 2206 | int ret = 0; |
| 2207 | |
| 2208 | ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha); |
| 2209 | |
| 2210 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); |
| 2211 | if (pkt == NULL) { |
| 2212 | ql_dbg(ql_dbg_tgt, vha, 0xe050, |
| 2213 | "qla_target(%d): %s failed: unable to allocate " |
| 2214 | "request packet\n", vha->vp_idx, __func__); |
| 2215 | return -ENOMEM; |
| 2216 | } |
| 2217 | |
| 2218 | if (cmd != NULL) { |
| 2219 | if (cmd->state < QLA_TGT_STATE_PROCESSED) { |
| 2220 | ql_dbg(ql_dbg_tgt, vha, 0xe051, |
| 2221 | "qla_target(%d): Terminating cmd %p with " |
| 2222 | "incorrect state %d\n", vha->vp_idx, cmd, |
| 2223 | cmd->state); |
| 2224 | } else |
| 2225 | ret = 1; |
| 2226 | } |
| 2227 | |
| 2228 | pkt->entry_count = 1; |
| 2229 | pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| 2230 | |
| 2231 | ctio24 = (struct ctio7_to_24xx *)pkt; |
| 2232 | ctio24->entry_type = CTIO_TYPE7; |
| 2233 | ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED; |
| 2234 | ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); |
| 2235 | ctio24->vp_index = vha->vp_idx; |
| 2236 | ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; |
| 2237 | ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; |
| 2238 | ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; |
| 2239 | ctio24->exchange_addr = atio->u.isp24.exchange_addr; |
| 2240 | ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | |
| 2241 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | |
| 2242 | CTIO7_FLAGS_TERMINATE); |
| 2243 | ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); |
| 2244 | |
| 2245 | /* Most likely, it isn't needed */ |
| 2246 | ctio24->u.status1.residual = get_unaligned((uint32_t *) |
| 2247 | &atio->u.isp24.fcp_cmnd.add_cdb[ |
| 2248 | atio->u.isp24.fcp_cmnd.add_cdb_len]); |
| 2249 | if (ctio24->u.status1.residual != 0) |
| 2250 | ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; |
| 2251 | |
| 2252 | qla2x00_start_iocbs(vha, vha->req); |
| 2253 | return ret; |
| 2254 | } |
| 2255 | |
| 2256 | static void qlt_send_term_exchange(struct scsi_qla_host *vha, |
| 2257 | struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked) |
| 2258 | { |
| 2259 | unsigned long flags; |
| 2260 | int rc; |
| 2261 | |
| 2262 | if (qlt_issue_marker(vha, ha_locked) < 0) |
| 2263 | return; |
| 2264 | |
| 2265 | if (ha_locked) { |
| 2266 | rc = __qlt_send_term_exchange(vha, cmd, atio); |
| 2267 | goto done; |
| 2268 | } |
| 2269 | spin_lock_irqsave(&vha->hw->hardware_lock, flags); |
| 2270 | rc = __qlt_send_term_exchange(vha, cmd, atio); |
| 2271 | spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); |
| 2272 | done: |
| 2273 | if (rc == 1) { |
| 2274 | if (!ha_locked && !in_interrupt()) |
| 2275 | msleep(250); /* just in case */ |
| 2276 | |
| 2277 | vha->hw->tgt.tgt_ops->free_cmd(cmd); |
| 2278 | } |
| 2279 | } |
| 2280 | |
| 2281 | void qlt_free_cmd(struct qla_tgt_cmd *cmd) |
| 2282 | { |
| 2283 | BUG_ON(cmd->sg_mapped); |
| 2284 | |
| 2285 | if (unlikely(cmd->free_sg)) |
| 2286 | kfree(cmd->sg); |
| 2287 | kmem_cache_free(qla_tgt_cmd_cachep, cmd); |
| 2288 | } |
| 2289 | EXPORT_SYMBOL(qlt_free_cmd); |
| 2290 | |
| 2291 | /* ha->hardware_lock supposed to be held on entry */ |
| 2292 | static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha, |
| 2293 | struct qla_tgt_cmd *cmd, void *ctio) |
| 2294 | { |
| 2295 | struct qla_tgt_srr_ctio *sc; |
| 2296 | struct qla_hw_data *ha = vha->hw; |
| 2297 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 2298 | struct qla_tgt_srr_imm *imm; |
| 2299 | |
| 2300 | tgt->ctio_srr_id++; |
| 2301 | |
| 2302 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, |
| 2303 | "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx); |
| 2304 | |
| 2305 | if (!ctio) { |
| 2306 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055, |
| 2307 | "qla_target(%d): SRR CTIO, but ctio is NULL\n", |
| 2308 | vha->vp_idx); |
| 2309 | return -EINVAL; |
| 2310 | } |
| 2311 | |
| 2312 | sc = kzalloc(sizeof(*sc), GFP_ATOMIC); |
| 2313 | if (sc != NULL) { |
| 2314 | sc->cmd = cmd; |
| 2315 | /* IRQ is already OFF */ |
| 2316 | spin_lock(&tgt->srr_lock); |
| 2317 | sc->srr_id = tgt->ctio_srr_id; |
| 2318 | list_add_tail(&sc->srr_list_entry, |
| 2319 | &tgt->srr_ctio_list); |
| 2320 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, |
| 2321 | "CTIO SRR %p added (id %d)\n", sc, sc->srr_id); |
| 2322 | if (tgt->imm_srr_id == tgt->ctio_srr_id) { |
| 2323 | int found = 0; |
| 2324 | list_for_each_entry(imm, &tgt->srr_imm_list, |
| 2325 | srr_list_entry) { |
| 2326 | if (imm->srr_id == sc->srr_id) { |
| 2327 | found = 1; |
| 2328 | break; |
| 2329 | } |
| 2330 | } |
| 2331 | if (found) { |
| 2332 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b, |
| 2333 | "Scheduling srr work\n"); |
| 2334 | schedule_work(&tgt->srr_work); |
| 2335 | } else { |
| 2336 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056, |
| 2337 | "qla_target(%d): imm_srr_id " |
| 2338 | "== ctio_srr_id (%d), but there is no " |
| 2339 | "corresponding SRR IMM, deleting CTIO " |
| 2340 | "SRR %p\n", vha->vp_idx, |
| 2341 | tgt->ctio_srr_id, sc); |
| 2342 | list_del(&sc->srr_list_entry); |
| 2343 | spin_unlock(&tgt->srr_lock); |
| 2344 | |
| 2345 | kfree(sc); |
| 2346 | return -EINVAL; |
| 2347 | } |
| 2348 | } |
| 2349 | spin_unlock(&tgt->srr_lock); |
| 2350 | } else { |
| 2351 | struct qla_tgt_srr_imm *ti; |
| 2352 | |
| 2353 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057, |
| 2354 | "qla_target(%d): Unable to allocate SRR CTIO entry\n", |
| 2355 | vha->vp_idx); |
| 2356 | spin_lock(&tgt->srr_lock); |
| 2357 | list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list, |
| 2358 | srr_list_entry) { |
| 2359 | if (imm->srr_id == tgt->ctio_srr_id) { |
| 2360 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c, |
| 2361 | "IMM SRR %p deleted (id %d)\n", |
| 2362 | imm, imm->srr_id); |
| 2363 | list_del(&imm->srr_list_entry); |
| 2364 | qlt_reject_free_srr_imm(vha, imm, 1); |
| 2365 | } |
| 2366 | } |
| 2367 | spin_unlock(&tgt->srr_lock); |
| 2368 | |
| 2369 | return -ENOMEM; |
| 2370 | } |
| 2371 | |
| 2372 | return 0; |
| 2373 | } |
| 2374 | |
| 2375 | /* |
| 2376 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 2377 | */ |
| 2378 | static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, |
| 2379 | struct qla_tgt_cmd *cmd, uint32_t status) |
| 2380 | { |
| 2381 | int term = 0; |
| 2382 | |
| 2383 | if (ctio != NULL) { |
| 2384 | struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; |
| 2385 | term = !(c->flags & |
| 2386 | __constant_cpu_to_le16(OF_TERM_EXCH)); |
| 2387 | } else |
| 2388 | term = 1; |
| 2389 | |
| 2390 | if (term) |
| 2391 | qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); |
| 2392 | |
| 2393 | return term; |
| 2394 | } |
| 2395 | |
| 2396 | /* ha->hardware_lock supposed to be held on entry */ |
| 2397 | static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha, |
| 2398 | uint32_t handle) |
| 2399 | { |
| 2400 | struct qla_hw_data *ha = vha->hw; |
| 2401 | |
| 2402 | handle--; |
| 2403 | if (ha->tgt.cmds[handle] != NULL) { |
| 2404 | struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle]; |
| 2405 | ha->tgt.cmds[handle] = NULL; |
| 2406 | return cmd; |
| 2407 | } else |
| 2408 | return NULL; |
| 2409 | } |
| 2410 | |
| 2411 | /* ha->hardware_lock supposed to be held on entry */ |
| 2412 | static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, |
| 2413 | uint32_t handle, void *ctio) |
| 2414 | { |
| 2415 | struct qla_tgt_cmd *cmd = NULL; |
| 2416 | |
| 2417 | /* Clear out internal marks */ |
| 2418 | handle &= ~(CTIO_COMPLETION_HANDLE_MARK | |
| 2419 | CTIO_INTERMEDIATE_HANDLE_MARK); |
| 2420 | |
| 2421 | if (handle != QLA_TGT_NULL_HANDLE) { |
| 2422 | if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) { |
| 2423 | ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s", |
| 2424 | "SKIP_HANDLE CTIO\n"); |
| 2425 | return NULL; |
| 2426 | } |
| 2427 | /* handle-1 is actually used */ |
| 2428 | if (unlikely(handle > MAX_OUTSTANDING_COMMANDS)) { |
| 2429 | ql_dbg(ql_dbg_tgt, vha, 0xe052, |
| 2430 | "qla_target(%d): Wrong handle %x received\n", |
| 2431 | vha->vp_idx, handle); |
| 2432 | return NULL; |
| 2433 | } |
| 2434 | cmd = qlt_get_cmd(vha, handle); |
| 2435 | if (unlikely(cmd == NULL)) { |
| 2436 | ql_dbg(ql_dbg_tgt, vha, 0xe053, |
| 2437 | "qla_target(%d): Suspicious: unable to " |
| 2438 | "find the command with handle %x\n", vha->vp_idx, |
| 2439 | handle); |
| 2440 | return NULL; |
| 2441 | } |
| 2442 | } else if (ctio != NULL) { |
| 2443 | /* We can't get loop ID from CTIO7 */ |
| 2444 | ql_dbg(ql_dbg_tgt, vha, 0xe054, |
| 2445 | "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " |
| 2446 | "support NULL handles\n", vha->vp_idx); |
| 2447 | return NULL; |
| 2448 | } |
| 2449 | |
| 2450 | return cmd; |
| 2451 | } |
| 2452 | |
| 2453 | /* |
| 2454 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 2455 | */ |
| 2456 | static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, |
| 2457 | uint32_t status, void *ctio) |
| 2458 | { |
| 2459 | struct qla_hw_data *ha = vha->hw; |
| 2460 | struct se_cmd *se_cmd; |
| 2461 | struct target_core_fabric_ops *tfo; |
| 2462 | struct qla_tgt_cmd *cmd; |
| 2463 | |
| 2464 | ql_dbg(ql_dbg_tgt, vha, 0xe01e, |
| 2465 | "qla_target(%d): handle(ctio %p status %#x) <- %08x\n", |
| 2466 | vha->vp_idx, ctio, status, handle); |
| 2467 | |
| 2468 | if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { |
| 2469 | /* That could happen only in case of an error/reset/abort */ |
| 2470 | if (status != CTIO_SUCCESS) { |
| 2471 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, |
| 2472 | "Intermediate CTIO received" |
| 2473 | " (status %x)\n", status); |
| 2474 | } |
| 2475 | return; |
| 2476 | } |
| 2477 | |
| 2478 | cmd = qlt_ctio_to_cmd(vha, handle, ctio); |
Roland Dreier | 092e1dc | 2012-06-11 18:23:15 -0700 | [diff] [blame] | 2479 | if (cmd == NULL) |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 2480 | return; |
Roland Dreier | 092e1dc | 2012-06-11 18:23:15 -0700 | [diff] [blame] | 2481 | |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 2482 | se_cmd = &cmd->se_cmd; |
| 2483 | tfo = se_cmd->se_tfo; |
| 2484 | |
| 2485 | if (cmd->sg_mapped) |
| 2486 | qlt_unmap_sg(vha, cmd); |
| 2487 | |
| 2488 | if (unlikely(status != CTIO_SUCCESS)) { |
| 2489 | switch (status & 0xFFFF) { |
| 2490 | case CTIO_LIP_RESET: |
| 2491 | case CTIO_TARGET_RESET: |
| 2492 | case CTIO_ABORTED: |
| 2493 | case CTIO_TIMEOUT: |
| 2494 | case CTIO_INVALID_RX_ID: |
| 2495 | /* They are OK */ |
| 2496 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, |
| 2497 | "qla_target(%d): CTIO with " |
| 2498 | "status %#x received, state %x, se_cmd %p, " |
| 2499 | "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " |
| 2500 | "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, |
| 2501 | status, cmd->state, se_cmd); |
| 2502 | break; |
| 2503 | |
| 2504 | case CTIO_PORT_LOGGED_OUT: |
| 2505 | case CTIO_PORT_UNAVAILABLE: |
| 2506 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, |
| 2507 | "qla_target(%d): CTIO with PORT LOGGED " |
| 2508 | "OUT (29) or PORT UNAVAILABLE (28) status %x " |
| 2509 | "received (state %x, se_cmd %p)\n", vha->vp_idx, |
| 2510 | status, cmd->state, se_cmd); |
| 2511 | break; |
| 2512 | |
| 2513 | case CTIO_SRR_RECEIVED: |
| 2514 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a, |
| 2515 | "qla_target(%d): CTIO with SRR_RECEIVED" |
| 2516 | " status %x received (state %x, se_cmd %p)\n", |
| 2517 | vha->vp_idx, status, cmd->state, se_cmd); |
| 2518 | if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0) |
| 2519 | break; |
| 2520 | else |
| 2521 | return; |
| 2522 | |
| 2523 | default: |
| 2524 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, |
| 2525 | "qla_target(%d): CTIO with error status " |
| 2526 | "0x%x received (state %x, se_cmd %p\n", |
| 2527 | vha->vp_idx, status, cmd->state, se_cmd); |
| 2528 | break; |
| 2529 | } |
| 2530 | |
| 2531 | if (cmd->state != QLA_TGT_STATE_NEED_DATA) |
| 2532 | if (qlt_term_ctio_exchange(vha, ctio, cmd, status)) |
| 2533 | return; |
| 2534 | } |
| 2535 | |
| 2536 | if (cmd->state == QLA_TGT_STATE_PROCESSED) { |
| 2537 | ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd); |
| 2538 | } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { |
| 2539 | int rx_status = 0; |
| 2540 | |
| 2541 | cmd->state = QLA_TGT_STATE_DATA_IN; |
| 2542 | |
| 2543 | if (unlikely(status != CTIO_SUCCESS)) |
| 2544 | rx_status = -EIO; |
| 2545 | else |
| 2546 | cmd->write_data_transferred = 1; |
| 2547 | |
| 2548 | ql_dbg(ql_dbg_tgt, vha, 0xe020, |
| 2549 | "Data received, context %x, rx_status %d\n", |
| 2550 | 0x0, rx_status); |
| 2551 | |
| 2552 | ha->tgt.tgt_ops->handle_data(cmd); |
| 2553 | return; |
| 2554 | } else if (cmd->state == QLA_TGT_STATE_ABORTED) { |
| 2555 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, |
| 2556 | "Aborted command %p (tag %d) finished\n", cmd, cmd->tag); |
| 2557 | } else { |
| 2558 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, |
| 2559 | "qla_target(%d): A command in state (%d) should " |
| 2560 | "not return a CTIO complete\n", vha->vp_idx, cmd->state); |
| 2561 | } |
| 2562 | |
| 2563 | if (unlikely(status != CTIO_SUCCESS)) { |
| 2564 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); |
| 2565 | dump_stack(); |
| 2566 | } |
| 2567 | |
| 2568 | ha->tgt.tgt_ops->free_cmd(cmd); |
| 2569 | } |
| 2570 | |
| 2571 | /* ha->hardware_lock supposed to be held on entry */ |
| 2572 | /* called via callback from qla2xxx */ |
| 2573 | void qlt_ctio_completion(struct scsi_qla_host *vha, uint32_t handle) |
| 2574 | { |
| 2575 | struct qla_hw_data *ha = vha->hw; |
| 2576 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 2577 | |
| 2578 | if (likely(tgt == NULL)) { |
| 2579 | ql_dbg(ql_dbg_tgt, vha, 0xe021, |
| 2580 | "CTIO, but target mode not enabled" |
| 2581 | " (ha %d %p handle %#x)", vha->vp_idx, ha, handle); |
| 2582 | return; |
| 2583 | } |
| 2584 | |
| 2585 | tgt->irq_cmd_count++; |
| 2586 | qlt_do_ctio_completion(vha, handle, CTIO_SUCCESS, NULL); |
| 2587 | tgt->irq_cmd_count--; |
| 2588 | } |
| 2589 | |
| 2590 | static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, |
| 2591 | uint8_t task_codes) |
| 2592 | { |
| 2593 | int fcp_task_attr; |
| 2594 | |
| 2595 | switch (task_codes) { |
| 2596 | case ATIO_SIMPLE_QUEUE: |
| 2597 | fcp_task_attr = MSG_SIMPLE_TAG; |
| 2598 | break; |
| 2599 | case ATIO_HEAD_OF_QUEUE: |
| 2600 | fcp_task_attr = MSG_HEAD_TAG; |
| 2601 | break; |
| 2602 | case ATIO_ORDERED_QUEUE: |
| 2603 | fcp_task_attr = MSG_ORDERED_TAG; |
| 2604 | break; |
| 2605 | case ATIO_ACA_QUEUE: |
| 2606 | fcp_task_attr = MSG_ACA_TAG; |
| 2607 | break; |
| 2608 | case ATIO_UNTAGGED: |
| 2609 | fcp_task_attr = MSG_SIMPLE_TAG; |
| 2610 | break; |
| 2611 | default: |
| 2612 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, |
| 2613 | "qla_target: unknown task code %x, use ORDERED instead\n", |
| 2614 | task_codes); |
| 2615 | fcp_task_attr = MSG_ORDERED_TAG; |
| 2616 | break; |
| 2617 | } |
| 2618 | |
| 2619 | return fcp_task_attr; |
| 2620 | } |
| 2621 | |
| 2622 | static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *, |
| 2623 | uint8_t *); |
| 2624 | /* |
| 2625 | * Process context for I/O path into tcm_qla2xxx code |
| 2626 | */ |
| 2627 | static void qlt_do_work(struct work_struct *work) |
| 2628 | { |
| 2629 | struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); |
| 2630 | scsi_qla_host_t *vha = cmd->vha; |
| 2631 | struct qla_hw_data *ha = vha->hw; |
| 2632 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 2633 | struct qla_tgt_sess *sess = NULL; |
| 2634 | struct atio_from_isp *atio = &cmd->atio; |
| 2635 | unsigned char *cdb; |
| 2636 | unsigned long flags; |
| 2637 | uint32_t data_length; |
| 2638 | int ret, fcp_task_attr, data_dir, bidi = 0; |
| 2639 | |
| 2640 | if (tgt->tgt_stop) |
| 2641 | goto out_term; |
| 2642 | |
| 2643 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 2644 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, |
| 2645 | atio->u.isp24.fcp_hdr.s_id); |
Roland Dreier | e1013f1 | 2012-07-16 11:04:41 -0700 | [diff] [blame] | 2646 | /* Do kref_get() before dropping qla_hw_data->hardware_lock. */ |
| 2647 | if (sess) |
| 2648 | kref_get(&sess->se_sess->sess_kref); |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 2649 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 2650 | |
| 2651 | if (unlikely(!sess)) { |
| 2652 | uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id; |
| 2653 | |
| 2654 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, |
| 2655 | "qla_target(%d): Unable to find wwn login" |
| 2656 | " (s_id %x:%x:%x), trying to create it manually\n", |
| 2657 | vha->vp_idx, s_id[0], s_id[1], s_id[2]); |
| 2658 | |
| 2659 | if (atio->u.raw.entry_count > 1) { |
| 2660 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, |
| 2661 | "Dropping multy entry cmd %p\n", cmd); |
| 2662 | goto out_term; |
| 2663 | } |
| 2664 | |
| 2665 | mutex_lock(&ha->tgt.tgt_mutex); |
| 2666 | sess = qlt_make_local_sess(vha, s_id); |
| 2667 | /* sess has an extra creation ref. */ |
| 2668 | mutex_unlock(&ha->tgt.tgt_mutex); |
| 2669 | |
| 2670 | if (!sess) |
| 2671 | goto out_term; |
| 2672 | } |
| 2673 | |
| 2674 | cmd->sess = sess; |
| 2675 | cmd->loop_id = sess->loop_id; |
| 2676 | cmd->conf_compl_supported = sess->conf_compl_supported; |
| 2677 | |
| 2678 | cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; |
| 2679 | cmd->tag = atio->u.isp24.exchange_addr; |
| 2680 | cmd->unpacked_lun = scsilun_to_int( |
| 2681 | (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); |
| 2682 | |
| 2683 | if (atio->u.isp24.fcp_cmnd.rddata && |
| 2684 | atio->u.isp24.fcp_cmnd.wrdata) { |
| 2685 | bidi = 1; |
| 2686 | data_dir = DMA_TO_DEVICE; |
| 2687 | } else if (atio->u.isp24.fcp_cmnd.rddata) |
| 2688 | data_dir = DMA_FROM_DEVICE; |
| 2689 | else if (atio->u.isp24.fcp_cmnd.wrdata) |
| 2690 | data_dir = DMA_TO_DEVICE; |
| 2691 | else |
| 2692 | data_dir = DMA_NONE; |
| 2693 | |
| 2694 | fcp_task_attr = qlt_get_fcp_task_attr(vha, |
| 2695 | atio->u.isp24.fcp_cmnd.task_attr); |
| 2696 | data_length = be32_to_cpu(get_unaligned((uint32_t *) |
| 2697 | &atio->u.isp24.fcp_cmnd.add_cdb[ |
| 2698 | atio->u.isp24.fcp_cmnd.add_cdb_len])); |
| 2699 | |
| 2700 | ql_dbg(ql_dbg_tgt, vha, 0xe022, |
| 2701 | "qla_target: START qla command: %p lun: 0x%04x (tag %d)\n", |
| 2702 | cmd, cmd->unpacked_lun, cmd->tag); |
| 2703 | |
| 2704 | ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, |
| 2705 | fcp_task_attr, data_dir, bidi); |
| 2706 | if (ret != 0) |
| 2707 | goto out_term; |
| 2708 | /* |
| 2709 | * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( |
| 2710 | */ |
| 2711 | ha->tgt.tgt_ops->put_sess(sess); |
| 2712 | return; |
| 2713 | |
| 2714 | out_term: |
| 2715 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd); |
| 2716 | /* |
Roland Dreier | fae9eaf | 2012-06-11 18:23:16 -0700 | [diff] [blame] | 2717 | * cmd has not sent to target yet, so pass NULL as the second |
| 2718 | * argument to qlt_send_term_exchange() and free the memory here. |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 2719 | */ |
| 2720 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 2721 | qlt_send_term_exchange(vha, NULL, &cmd->atio, 1); |
Roland Dreier | fae9eaf | 2012-06-11 18:23:16 -0700 | [diff] [blame] | 2722 | kmem_cache_free(qla_tgt_cmd_cachep, cmd); |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 2723 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 2724 | if (sess) |
| 2725 | ha->tgt.tgt_ops->put_sess(sess); |
| 2726 | } |
| 2727 | |
| 2728 | /* ha->hardware_lock supposed to be held on entry */ |
| 2729 | static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, |
| 2730 | struct atio_from_isp *atio) |
| 2731 | { |
| 2732 | struct qla_hw_data *ha = vha->hw; |
| 2733 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 2734 | struct qla_tgt_cmd *cmd; |
| 2735 | |
| 2736 | if (unlikely(tgt->tgt_stop)) { |
| 2737 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, |
| 2738 | "New command while device %p is shutting down\n", tgt); |
| 2739 | return -EFAULT; |
| 2740 | } |
| 2741 | |
| 2742 | cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC); |
| 2743 | if (!cmd) { |
| 2744 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e, |
| 2745 | "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); |
| 2746 | return -ENOMEM; |
| 2747 | } |
| 2748 | |
| 2749 | INIT_LIST_HEAD(&cmd->cmd_list); |
| 2750 | |
| 2751 | memcpy(&cmd->atio, atio, sizeof(*atio)); |
| 2752 | cmd->state = QLA_TGT_STATE_NEW; |
| 2753 | cmd->tgt = ha->tgt.qla_tgt; |
| 2754 | cmd->vha = vha; |
| 2755 | |
| 2756 | INIT_WORK(&cmd->work, qlt_do_work); |
| 2757 | queue_work(qla_tgt_wq, &cmd->work); |
| 2758 | return 0; |
| 2759 | |
| 2760 | } |
| 2761 | |
| 2762 | /* ha->hardware_lock supposed to be held on entry */ |
| 2763 | static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, |
| 2764 | int fn, void *iocb, int flags) |
| 2765 | { |
| 2766 | struct scsi_qla_host *vha = sess->vha; |
| 2767 | struct qla_hw_data *ha = vha->hw; |
| 2768 | struct qla_tgt_mgmt_cmd *mcmd; |
| 2769 | int res; |
| 2770 | uint8_t tmr_func; |
| 2771 | |
| 2772 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); |
| 2773 | if (!mcmd) { |
| 2774 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, |
| 2775 | "qla_target(%d): Allocation of management " |
| 2776 | "command failed, some commands and their data could " |
| 2777 | "leak\n", vha->vp_idx); |
| 2778 | return -ENOMEM; |
| 2779 | } |
| 2780 | memset(mcmd, 0, sizeof(*mcmd)); |
| 2781 | mcmd->sess = sess; |
| 2782 | |
| 2783 | if (iocb) { |
| 2784 | memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, |
| 2785 | sizeof(mcmd->orig_iocb.imm_ntfy)); |
| 2786 | } |
| 2787 | mcmd->tmr_func = fn; |
| 2788 | mcmd->flags = flags; |
| 2789 | |
| 2790 | switch (fn) { |
| 2791 | case QLA_TGT_CLEAR_ACA: |
| 2792 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000, |
| 2793 | "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx); |
| 2794 | tmr_func = TMR_CLEAR_ACA; |
| 2795 | break; |
| 2796 | |
| 2797 | case QLA_TGT_TARGET_RESET: |
| 2798 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001, |
| 2799 | "qla_target(%d): TARGET_RESET received\n", |
| 2800 | sess->vha->vp_idx); |
| 2801 | tmr_func = TMR_TARGET_WARM_RESET; |
| 2802 | break; |
| 2803 | |
| 2804 | case QLA_TGT_LUN_RESET: |
| 2805 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002, |
| 2806 | "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx); |
| 2807 | tmr_func = TMR_LUN_RESET; |
| 2808 | break; |
| 2809 | |
| 2810 | case QLA_TGT_CLEAR_TS: |
| 2811 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003, |
| 2812 | "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx); |
| 2813 | tmr_func = TMR_CLEAR_TASK_SET; |
| 2814 | break; |
| 2815 | |
| 2816 | case QLA_TGT_ABORT_TS: |
| 2817 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004, |
| 2818 | "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx); |
| 2819 | tmr_func = TMR_ABORT_TASK_SET; |
| 2820 | break; |
| 2821 | #if 0 |
| 2822 | case QLA_TGT_ABORT_ALL: |
| 2823 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005, |
| 2824 | "qla_target(%d): Doing ABORT_ALL_TASKS\n", |
| 2825 | sess->vha->vp_idx); |
| 2826 | tmr_func = 0; |
| 2827 | break; |
| 2828 | |
| 2829 | case QLA_TGT_ABORT_ALL_SESS: |
| 2830 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006, |
| 2831 | "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n", |
| 2832 | sess->vha->vp_idx); |
| 2833 | tmr_func = 0; |
| 2834 | break; |
| 2835 | |
| 2836 | case QLA_TGT_NEXUS_LOSS_SESS: |
| 2837 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007, |
| 2838 | "qla_target(%d): Doing NEXUS_LOSS_SESS\n", |
| 2839 | sess->vha->vp_idx); |
| 2840 | tmr_func = 0; |
| 2841 | break; |
| 2842 | |
| 2843 | case QLA_TGT_NEXUS_LOSS: |
| 2844 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008, |
| 2845 | "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx); |
| 2846 | tmr_func = 0; |
| 2847 | break; |
| 2848 | #endif |
| 2849 | default: |
| 2850 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a, |
| 2851 | "qla_target(%d): Unknown task mgmt fn 0x%x\n", |
| 2852 | sess->vha->vp_idx, fn); |
| 2853 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| 2854 | return -ENOSYS; |
| 2855 | } |
| 2856 | |
| 2857 | res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0); |
| 2858 | if (res != 0) { |
| 2859 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, |
| 2860 | "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", |
| 2861 | sess->vha->vp_idx, res); |
| 2862 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| 2863 | return -EFAULT; |
| 2864 | } |
| 2865 | |
| 2866 | return 0; |
| 2867 | } |
| 2868 | |
| 2869 | /* ha->hardware_lock supposed to be held on entry */ |
| 2870 | static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) |
| 2871 | { |
| 2872 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; |
| 2873 | struct qla_hw_data *ha = vha->hw; |
| 2874 | struct qla_tgt *tgt; |
| 2875 | struct qla_tgt_sess *sess; |
| 2876 | uint32_t lun, unpacked_lun; |
| 2877 | int lun_size, fn; |
| 2878 | |
| 2879 | tgt = ha->tgt.qla_tgt; |
| 2880 | |
| 2881 | lun = a->u.isp24.fcp_cmnd.lun; |
| 2882 | lun_size = sizeof(a->u.isp24.fcp_cmnd.lun); |
| 2883 | fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; |
| 2884 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, |
| 2885 | a->u.isp24.fcp_hdr.s_id); |
| 2886 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); |
| 2887 | |
| 2888 | if (!sess) { |
| 2889 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, |
| 2890 | "qla_target(%d): task mgmt fn 0x%x for " |
| 2891 | "non-existant session\n", vha->vp_idx, fn); |
| 2892 | return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, |
| 2893 | sizeof(struct atio_from_isp)); |
| 2894 | } |
| 2895 | |
| 2896 | return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); |
| 2897 | } |
| 2898 | |
| 2899 | /* ha->hardware_lock supposed to be held on entry */ |
| 2900 | static int __qlt_abort_task(struct scsi_qla_host *vha, |
| 2901 | struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess) |
| 2902 | { |
| 2903 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; |
| 2904 | struct qla_hw_data *ha = vha->hw; |
| 2905 | struct qla_tgt_mgmt_cmd *mcmd; |
| 2906 | uint32_t lun, unpacked_lun; |
| 2907 | int rc; |
| 2908 | |
| 2909 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); |
| 2910 | if (mcmd == NULL) { |
| 2911 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, |
| 2912 | "qla_target(%d): %s: Allocation of ABORT cmd failed\n", |
| 2913 | vha->vp_idx, __func__); |
| 2914 | return -ENOMEM; |
| 2915 | } |
| 2916 | memset(mcmd, 0, sizeof(*mcmd)); |
| 2917 | |
| 2918 | mcmd->sess = sess; |
| 2919 | memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, |
| 2920 | sizeof(mcmd->orig_iocb.imm_ntfy)); |
| 2921 | |
| 2922 | lun = a->u.isp24.fcp_cmnd.lun; |
| 2923 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); |
| 2924 | |
| 2925 | rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK, |
| 2926 | le16_to_cpu(iocb->u.isp2x.seq_id)); |
| 2927 | if (rc != 0) { |
| 2928 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, |
| 2929 | "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", |
| 2930 | vha->vp_idx, rc); |
| 2931 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| 2932 | return -EFAULT; |
| 2933 | } |
| 2934 | |
| 2935 | return 0; |
| 2936 | } |
| 2937 | |
| 2938 | /* ha->hardware_lock supposed to be held on entry */ |
| 2939 | static int qlt_abort_task(struct scsi_qla_host *vha, |
| 2940 | struct imm_ntfy_from_isp *iocb) |
| 2941 | { |
| 2942 | struct qla_hw_data *ha = vha->hw; |
| 2943 | struct qla_tgt_sess *sess; |
| 2944 | int loop_id; |
| 2945 | |
| 2946 | loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); |
| 2947 | |
| 2948 | sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); |
| 2949 | if (sess == NULL) { |
| 2950 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, |
| 2951 | "qla_target(%d): task abort for unexisting " |
| 2952 | "session\n", vha->vp_idx); |
| 2953 | return qlt_sched_sess_work(ha->tgt.qla_tgt, |
| 2954 | QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); |
| 2955 | } |
| 2956 | |
| 2957 | return __qlt_abort_task(vha, iocb, sess); |
| 2958 | } |
| 2959 | |
| 2960 | /* |
| 2961 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 2962 | */ |
| 2963 | static int qlt_24xx_handle_els(struct scsi_qla_host *vha, |
| 2964 | struct imm_ntfy_from_isp *iocb) |
| 2965 | { |
| 2966 | struct qla_hw_data *ha = vha->hw; |
| 2967 | int res = 0; |
| 2968 | |
| 2969 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026, |
| 2970 | "qla_target(%d): Port ID: 0x%02x:%02x:%02x" |
| 2971 | " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0], |
| 2972 | iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2], |
| 2973 | iocb->u.isp24.status_subcode); |
| 2974 | |
| 2975 | switch (iocb->u.isp24.status_subcode) { |
| 2976 | case ELS_PLOGI: |
| 2977 | case ELS_FLOGI: |
| 2978 | case ELS_PRLI: |
| 2979 | case ELS_LOGO: |
| 2980 | case ELS_PRLO: |
| 2981 | res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); |
| 2982 | break; |
| 2983 | case ELS_PDISC: |
| 2984 | case ELS_ADISC: |
| 2985 | { |
| 2986 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 2987 | if (tgt->link_reinit_iocb_pending) { |
| 2988 | qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, |
| 2989 | 0, 0, 0, 0, 0, 0); |
| 2990 | tgt->link_reinit_iocb_pending = 0; |
| 2991 | } |
| 2992 | res = 1; /* send notify ack */ |
| 2993 | break; |
| 2994 | } |
| 2995 | |
| 2996 | default: |
| 2997 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, |
| 2998 | "qla_target(%d): Unsupported ELS command %x " |
| 2999 | "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); |
| 3000 | res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); |
| 3001 | break; |
| 3002 | } |
| 3003 | |
| 3004 | return res; |
| 3005 | } |
| 3006 | |
| 3007 | static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset) |
| 3008 | { |
| 3009 | struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL; |
| 3010 | size_t first_offset = 0, rem_offset = offset, tmp = 0; |
| 3011 | int i, sg_srr_cnt, bufflen = 0; |
| 3012 | |
| 3013 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023, |
| 3014 | "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, " |
| 3015 | "cmd->sg_cnt: %u, direction: %d\n", |
| 3016 | cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); |
| 3017 | |
| 3018 | /* |
| 3019 | * FIXME: Reject non zero SRR relative offset until we can test |
| 3020 | * this code properly. |
| 3021 | */ |
| 3022 | pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset); |
| 3023 | return -1; |
| 3024 | |
| 3025 | if (!cmd->sg || !cmd->sg_cnt) { |
| 3026 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055, |
| 3027 | "Missing cmd->sg or zero cmd->sg_cnt in" |
| 3028 | " qla_tgt_set_data_offset\n"); |
| 3029 | return -EINVAL; |
| 3030 | } |
| 3031 | /* |
| 3032 | * Walk the current cmd->sg list until we locate the new sg_srr_start |
| 3033 | */ |
| 3034 | for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) { |
| 3035 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024, |
| 3036 | "sg[%d]: %p page: %p, length: %d, offset: %d\n", |
| 3037 | i, sg, sg_page(sg), sg->length, sg->offset); |
| 3038 | |
| 3039 | if ((sg->length + tmp) > offset) { |
| 3040 | first_offset = rem_offset; |
| 3041 | sg_srr_start = sg; |
| 3042 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025, |
| 3043 | "Found matching sg[%d], using %p as sg_srr_start, " |
| 3044 | "and using first_offset: %zu\n", i, sg, |
| 3045 | first_offset); |
| 3046 | break; |
| 3047 | } |
| 3048 | tmp += sg->length; |
| 3049 | rem_offset -= sg->length; |
| 3050 | } |
| 3051 | |
| 3052 | if (!sg_srr_start) { |
| 3053 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056, |
| 3054 | "Unable to locate sg_srr_start for offset: %u\n", offset); |
| 3055 | return -EINVAL; |
| 3056 | } |
| 3057 | sg_srr_cnt = (cmd->sg_cnt - i); |
| 3058 | |
| 3059 | sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL); |
| 3060 | if (!sg_srr) { |
| 3061 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057, |
| 3062 | "Unable to allocate sgp\n"); |
| 3063 | return -ENOMEM; |
| 3064 | } |
| 3065 | sg_init_table(sg_srr, sg_srr_cnt); |
| 3066 | sgp = &sg_srr[0]; |
| 3067 | /* |
| 3068 | * Walk the remaining list for sg_srr_start, mapping to the newly |
| 3069 | * allocated sg_srr taking first_offset into account. |
| 3070 | */ |
| 3071 | for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) { |
| 3072 | if (first_offset) { |
| 3073 | sg_set_page(sgp, sg_page(sg), |
| 3074 | (sg->length - first_offset), first_offset); |
| 3075 | first_offset = 0; |
| 3076 | } else { |
| 3077 | sg_set_page(sgp, sg_page(sg), sg->length, 0); |
| 3078 | } |
| 3079 | bufflen += sgp->length; |
| 3080 | |
| 3081 | sgp = sg_next(sgp); |
| 3082 | if (!sgp) |
| 3083 | break; |
| 3084 | } |
| 3085 | |
| 3086 | cmd->sg = sg_srr; |
| 3087 | cmd->sg_cnt = sg_srr_cnt; |
| 3088 | cmd->bufflen = bufflen; |
| 3089 | cmd->offset += offset; |
| 3090 | cmd->free_sg = 1; |
| 3091 | |
| 3092 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg); |
| 3093 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n", |
| 3094 | cmd->sg_cnt); |
| 3095 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n", |
| 3096 | cmd->bufflen); |
| 3097 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n", |
| 3098 | cmd->offset); |
| 3099 | |
| 3100 | if (cmd->sg_cnt < 0) |
| 3101 | BUG(); |
| 3102 | |
| 3103 | if (cmd->bufflen < 0) |
| 3104 | BUG(); |
| 3105 | |
| 3106 | return 0; |
| 3107 | } |
| 3108 | |
| 3109 | static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd, |
| 3110 | uint32_t srr_rel_offs, int *xmit_type) |
| 3111 | { |
| 3112 | int res = 0, rel_offs; |
| 3113 | |
| 3114 | rel_offs = srr_rel_offs - cmd->offset; |
| 3115 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d", |
| 3116 | srr_rel_offs, rel_offs); |
| 3117 | |
| 3118 | *xmit_type = QLA_TGT_XMIT_ALL; |
| 3119 | |
| 3120 | if (rel_offs < 0) { |
| 3121 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062, |
| 3122 | "qla_target(%d): SRR rel_offs (%d) < 0", |
| 3123 | cmd->vha->vp_idx, rel_offs); |
| 3124 | res = -1; |
| 3125 | } else if (rel_offs == cmd->bufflen) |
| 3126 | *xmit_type = QLA_TGT_XMIT_STATUS; |
| 3127 | else if (rel_offs > 0) |
| 3128 | res = qlt_set_data_offset(cmd, rel_offs); |
| 3129 | |
| 3130 | return res; |
| 3131 | } |
| 3132 | |
| 3133 | /* No locks, thread context */ |
| 3134 | static void qlt_handle_srr(struct scsi_qla_host *vha, |
| 3135 | struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm) |
| 3136 | { |
| 3137 | struct imm_ntfy_from_isp *ntfy = |
| 3138 | (struct imm_ntfy_from_isp *)&imm->imm_ntfy; |
| 3139 | struct qla_hw_data *ha = vha->hw; |
| 3140 | struct qla_tgt_cmd *cmd = sctio->cmd; |
| 3141 | struct se_cmd *se_cmd = &cmd->se_cmd; |
| 3142 | unsigned long flags; |
| 3143 | int xmit_type = 0, resp = 0; |
| 3144 | uint32_t offset; |
| 3145 | uint16_t srr_ui; |
| 3146 | |
| 3147 | offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs); |
| 3148 | srr_ui = ntfy->u.isp24.srr_ui; |
| 3149 | |
| 3150 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n", |
| 3151 | cmd, srr_ui); |
| 3152 | |
| 3153 | switch (srr_ui) { |
| 3154 | case SRR_IU_STATUS: |
| 3155 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 3156 | qlt_send_notify_ack(vha, ntfy, |
| 3157 | 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); |
| 3158 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 3159 | xmit_type = QLA_TGT_XMIT_STATUS; |
| 3160 | resp = 1; |
| 3161 | break; |
| 3162 | case SRR_IU_DATA_IN: |
| 3163 | if (!cmd->sg || !cmd->sg_cnt) { |
| 3164 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063, |
| 3165 | "Unable to process SRR_IU_DATA_IN due to" |
| 3166 | " missing cmd->sg, state: %d\n", cmd->state); |
| 3167 | dump_stack(); |
| 3168 | goto out_reject; |
| 3169 | } |
| 3170 | if (se_cmd->scsi_status != 0) { |
| 3171 | ql_dbg(ql_dbg_tgt, vha, 0xe02a, |
| 3172 | "Rejecting SRR_IU_DATA_IN with non GOOD " |
| 3173 | "scsi_status\n"); |
| 3174 | goto out_reject; |
| 3175 | } |
| 3176 | cmd->bufflen = se_cmd->data_length; |
| 3177 | |
| 3178 | if (qlt_has_data(cmd)) { |
| 3179 | if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) |
| 3180 | goto out_reject; |
| 3181 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 3182 | qlt_send_notify_ack(vha, ntfy, |
| 3183 | 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); |
| 3184 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 3185 | resp = 1; |
| 3186 | } else { |
| 3187 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064, |
| 3188 | "qla_target(%d): SRR for in data for cmd " |
| 3189 | "without them (tag %d, SCSI status %d), " |
| 3190 | "reject", vha->vp_idx, cmd->tag, |
| 3191 | cmd->se_cmd.scsi_status); |
| 3192 | goto out_reject; |
| 3193 | } |
| 3194 | break; |
| 3195 | case SRR_IU_DATA_OUT: |
| 3196 | if (!cmd->sg || !cmd->sg_cnt) { |
| 3197 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065, |
| 3198 | "Unable to process SRR_IU_DATA_OUT due to" |
| 3199 | " missing cmd->sg\n"); |
| 3200 | dump_stack(); |
| 3201 | goto out_reject; |
| 3202 | } |
| 3203 | if (se_cmd->scsi_status != 0) { |
| 3204 | ql_dbg(ql_dbg_tgt, vha, 0xe02b, |
| 3205 | "Rejecting SRR_IU_DATA_OUT" |
| 3206 | " with non GOOD scsi_status\n"); |
| 3207 | goto out_reject; |
| 3208 | } |
| 3209 | cmd->bufflen = se_cmd->data_length; |
| 3210 | |
| 3211 | if (qlt_has_data(cmd)) { |
| 3212 | if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) |
| 3213 | goto out_reject; |
| 3214 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 3215 | qlt_send_notify_ack(vha, ntfy, |
| 3216 | 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); |
| 3217 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 3218 | if (xmit_type & QLA_TGT_XMIT_DATA) |
| 3219 | qlt_rdy_to_xfer(cmd); |
| 3220 | } else { |
| 3221 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066, |
| 3222 | "qla_target(%d): SRR for out data for cmd " |
| 3223 | "without them (tag %d, SCSI status %d), " |
| 3224 | "reject", vha->vp_idx, cmd->tag, |
| 3225 | cmd->se_cmd.scsi_status); |
| 3226 | goto out_reject; |
| 3227 | } |
| 3228 | break; |
| 3229 | default: |
| 3230 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067, |
| 3231 | "qla_target(%d): Unknown srr_ui value %x", |
| 3232 | vha->vp_idx, srr_ui); |
| 3233 | goto out_reject; |
| 3234 | } |
| 3235 | |
| 3236 | /* Transmit response in case of status and data-in cases */ |
| 3237 | if (resp) |
| 3238 | qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); |
| 3239 | |
| 3240 | return; |
| 3241 | |
| 3242 | out_reject: |
| 3243 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 3244 | qlt_send_notify_ack(vha, ntfy, 0, 0, 0, |
| 3245 | NOTIFY_ACK_SRR_FLAGS_REJECT, |
| 3246 | NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, |
| 3247 | NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); |
| 3248 | if (cmd->state == QLA_TGT_STATE_NEED_DATA) { |
| 3249 | cmd->state = QLA_TGT_STATE_DATA_IN; |
| 3250 | dump_stack(); |
| 3251 | } else |
| 3252 | qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); |
| 3253 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 3254 | } |
| 3255 | |
| 3256 | static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha, |
| 3257 | struct qla_tgt_srr_imm *imm, int ha_locked) |
| 3258 | { |
| 3259 | struct qla_hw_data *ha = vha->hw; |
| 3260 | unsigned long flags = 0; |
| 3261 | |
| 3262 | if (!ha_locked) |
| 3263 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 3264 | |
| 3265 | qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0, |
| 3266 | NOTIFY_ACK_SRR_FLAGS_REJECT, |
| 3267 | NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, |
| 3268 | NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); |
| 3269 | |
| 3270 | if (!ha_locked) |
| 3271 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 3272 | |
| 3273 | kfree(imm); |
| 3274 | } |
| 3275 | |
| 3276 | static void qlt_handle_srr_work(struct work_struct *work) |
| 3277 | { |
| 3278 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work); |
| 3279 | struct scsi_qla_host *vha = tgt->vha; |
| 3280 | struct qla_tgt_srr_ctio *sctio; |
| 3281 | unsigned long flags; |
| 3282 | |
| 3283 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n", |
| 3284 | tgt); |
| 3285 | |
| 3286 | restart: |
| 3287 | spin_lock_irqsave(&tgt->srr_lock, flags); |
| 3288 | list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) { |
| 3289 | struct qla_tgt_srr_imm *imm, *i, *ti; |
| 3290 | struct qla_tgt_cmd *cmd; |
| 3291 | struct se_cmd *se_cmd; |
| 3292 | |
| 3293 | imm = NULL; |
| 3294 | list_for_each_entry_safe(i, ti, &tgt->srr_imm_list, |
| 3295 | srr_list_entry) { |
| 3296 | if (i->srr_id == sctio->srr_id) { |
| 3297 | list_del(&i->srr_list_entry); |
| 3298 | if (imm) { |
| 3299 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068, |
| 3300 | "qla_target(%d): There must be " |
| 3301 | "only one IMM SRR per CTIO SRR " |
| 3302 | "(IMM SRR %p, id %d, CTIO %p\n", |
| 3303 | vha->vp_idx, i, i->srr_id, sctio); |
| 3304 | qlt_reject_free_srr_imm(tgt->vha, i, 0); |
| 3305 | } else |
| 3306 | imm = i; |
| 3307 | } |
| 3308 | } |
| 3309 | |
| 3310 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a, |
| 3311 | "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio, |
| 3312 | sctio->srr_id); |
| 3313 | |
| 3314 | if (imm == NULL) { |
| 3315 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b, |
| 3316 | "Not found matching IMM for SRR CTIO (id %d)\n", |
| 3317 | sctio->srr_id); |
| 3318 | continue; |
| 3319 | } else |
| 3320 | list_del(&sctio->srr_list_entry); |
| 3321 | |
| 3322 | spin_unlock_irqrestore(&tgt->srr_lock, flags); |
| 3323 | |
| 3324 | cmd = sctio->cmd; |
| 3325 | /* |
| 3326 | * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow |
| 3327 | * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in() |
| 3328 | * logic.. |
| 3329 | */ |
| 3330 | cmd->offset = 0; |
| 3331 | if (cmd->free_sg) { |
| 3332 | kfree(cmd->sg); |
| 3333 | cmd->sg = NULL; |
| 3334 | cmd->free_sg = 0; |
| 3335 | } |
| 3336 | se_cmd = &cmd->se_cmd; |
| 3337 | |
| 3338 | cmd->sg_cnt = se_cmd->t_data_nents; |
| 3339 | cmd->sg = se_cmd->t_data_sg; |
| 3340 | |
| 3341 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c, |
| 3342 | "SRR cmd %p (se_cmd %p, tag %d, op %x), " |
| 3343 | "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag, |
| 3344 | se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset); |
| 3345 | |
| 3346 | qlt_handle_srr(vha, sctio, imm); |
| 3347 | |
| 3348 | kfree(imm); |
| 3349 | kfree(sctio); |
| 3350 | goto restart; |
| 3351 | } |
| 3352 | spin_unlock_irqrestore(&tgt->srr_lock, flags); |
| 3353 | } |
| 3354 | |
| 3355 | /* ha->hardware_lock supposed to be held on entry */ |
| 3356 | static void qlt_prepare_srr_imm(struct scsi_qla_host *vha, |
| 3357 | struct imm_ntfy_from_isp *iocb) |
| 3358 | { |
| 3359 | struct qla_tgt_srr_imm *imm; |
| 3360 | struct qla_hw_data *ha = vha->hw; |
| 3361 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 3362 | struct qla_tgt_srr_ctio *sctio; |
| 3363 | |
| 3364 | tgt->imm_srr_id++; |
| 3365 | |
| 3366 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n", |
| 3367 | vha->vp_idx); |
| 3368 | |
| 3369 | imm = kzalloc(sizeof(*imm), GFP_ATOMIC); |
| 3370 | if (imm != NULL) { |
| 3371 | memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy)); |
| 3372 | |
| 3373 | /* IRQ is already OFF */ |
| 3374 | spin_lock(&tgt->srr_lock); |
| 3375 | imm->srr_id = tgt->imm_srr_id; |
| 3376 | list_add_tail(&imm->srr_list_entry, |
| 3377 | &tgt->srr_imm_list); |
| 3378 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e, |
| 3379 | "IMM NTFY SRR %p added (id %d, ui %x)\n", |
| 3380 | imm, imm->srr_id, iocb->u.isp24.srr_ui); |
| 3381 | if (tgt->imm_srr_id == tgt->ctio_srr_id) { |
| 3382 | int found = 0; |
| 3383 | list_for_each_entry(sctio, &tgt->srr_ctio_list, |
| 3384 | srr_list_entry) { |
| 3385 | if (sctio->srr_id == imm->srr_id) { |
| 3386 | found = 1; |
| 3387 | break; |
| 3388 | } |
| 3389 | } |
| 3390 | if (found) { |
| 3391 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s", |
| 3392 | "Scheduling srr work\n"); |
| 3393 | schedule_work(&tgt->srr_work); |
| 3394 | } else { |
| 3395 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030, |
| 3396 | "qla_target(%d): imm_srr_id " |
| 3397 | "== ctio_srr_id (%d), but there is no " |
| 3398 | "corresponding SRR CTIO, deleting IMM " |
| 3399 | "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id, |
| 3400 | imm); |
| 3401 | list_del(&imm->srr_list_entry); |
| 3402 | |
| 3403 | kfree(imm); |
| 3404 | |
| 3405 | spin_unlock(&tgt->srr_lock); |
| 3406 | goto out_reject; |
| 3407 | } |
| 3408 | } |
| 3409 | spin_unlock(&tgt->srr_lock); |
| 3410 | } else { |
| 3411 | struct qla_tgt_srr_ctio *ts; |
| 3412 | |
| 3413 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069, |
| 3414 | "qla_target(%d): Unable to allocate SRR IMM " |
| 3415 | "entry, SRR request will be rejected\n", vha->vp_idx); |
| 3416 | |
| 3417 | /* IRQ is already OFF */ |
| 3418 | spin_lock(&tgt->srr_lock); |
| 3419 | list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list, |
| 3420 | srr_list_entry) { |
| 3421 | if (sctio->srr_id == tgt->imm_srr_id) { |
| 3422 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031, |
| 3423 | "CTIO SRR %p deleted (id %d)\n", |
| 3424 | sctio, sctio->srr_id); |
| 3425 | list_del(&sctio->srr_list_entry); |
| 3426 | qlt_send_term_exchange(vha, sctio->cmd, |
| 3427 | &sctio->cmd->atio, 1); |
| 3428 | kfree(sctio); |
| 3429 | } |
| 3430 | } |
| 3431 | spin_unlock(&tgt->srr_lock); |
| 3432 | goto out_reject; |
| 3433 | } |
| 3434 | |
| 3435 | return; |
| 3436 | |
| 3437 | out_reject: |
| 3438 | qlt_send_notify_ack(vha, iocb, 0, 0, 0, |
| 3439 | NOTIFY_ACK_SRR_FLAGS_REJECT, |
| 3440 | NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, |
| 3441 | NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); |
| 3442 | } |
| 3443 | |
| 3444 | /* |
| 3445 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 3446 | */ |
| 3447 | static void qlt_handle_imm_notify(struct scsi_qla_host *vha, |
| 3448 | struct imm_ntfy_from_isp *iocb) |
| 3449 | { |
| 3450 | struct qla_hw_data *ha = vha->hw; |
| 3451 | uint32_t add_flags = 0; |
| 3452 | int send_notify_ack = 1; |
| 3453 | uint16_t status; |
| 3454 | |
| 3455 | status = le16_to_cpu(iocb->u.isp2x.status); |
| 3456 | switch (status) { |
| 3457 | case IMM_NTFY_LIP_RESET: |
| 3458 | { |
| 3459 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, |
| 3460 | "qla_target(%d): LIP reset (loop %#x), subcode %x\n", |
| 3461 | vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), |
| 3462 | iocb->u.isp24.status_subcode); |
| 3463 | |
| 3464 | if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) |
| 3465 | send_notify_ack = 0; |
| 3466 | break; |
| 3467 | } |
| 3468 | |
| 3469 | case IMM_NTFY_LIP_LINK_REINIT: |
| 3470 | { |
| 3471 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 3472 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, |
| 3473 | "qla_target(%d): LINK REINIT (loop %#x, " |
| 3474 | "subcode %x)\n", vha->vp_idx, |
| 3475 | le16_to_cpu(iocb->u.isp24.nport_handle), |
| 3476 | iocb->u.isp24.status_subcode); |
| 3477 | if (tgt->link_reinit_iocb_pending) { |
| 3478 | qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, |
| 3479 | 0, 0, 0, 0, 0, 0); |
| 3480 | } |
| 3481 | memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); |
| 3482 | tgt->link_reinit_iocb_pending = 1; |
| 3483 | /* |
| 3484 | * QLogic requires to wait after LINK REINIT for possible |
| 3485 | * PDISC or ADISC ELS commands |
| 3486 | */ |
| 3487 | send_notify_ack = 0; |
| 3488 | break; |
| 3489 | } |
| 3490 | |
| 3491 | case IMM_NTFY_PORT_LOGOUT: |
| 3492 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, |
| 3493 | "qla_target(%d): Port logout (loop " |
| 3494 | "%#x, subcode %x)\n", vha->vp_idx, |
| 3495 | le16_to_cpu(iocb->u.isp24.nport_handle), |
| 3496 | iocb->u.isp24.status_subcode); |
| 3497 | |
| 3498 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) |
| 3499 | send_notify_ack = 0; |
| 3500 | /* The sessions will be cleared in the callback, if needed */ |
| 3501 | break; |
| 3502 | |
| 3503 | case IMM_NTFY_GLBL_TPRLO: |
| 3504 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, |
| 3505 | "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); |
| 3506 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) |
| 3507 | send_notify_ack = 0; |
| 3508 | /* The sessions will be cleared in the callback, if needed */ |
| 3509 | break; |
| 3510 | |
| 3511 | case IMM_NTFY_PORT_CONFIG: |
| 3512 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, |
| 3513 | "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, |
| 3514 | status); |
| 3515 | if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) |
| 3516 | send_notify_ack = 0; |
| 3517 | /* The sessions will be cleared in the callback, if needed */ |
| 3518 | break; |
| 3519 | |
| 3520 | case IMM_NTFY_GLBL_LOGO: |
| 3521 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, |
| 3522 | "qla_target(%d): Link failure detected\n", |
| 3523 | vha->vp_idx); |
| 3524 | /* I_T nexus loss */ |
| 3525 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) |
| 3526 | send_notify_ack = 0; |
| 3527 | break; |
| 3528 | |
| 3529 | case IMM_NTFY_IOCB_OVERFLOW: |
| 3530 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, |
| 3531 | "qla_target(%d): Cannot provide requested " |
| 3532 | "capability (IOCB overflowed the immediate notify " |
| 3533 | "resource count)\n", vha->vp_idx); |
| 3534 | break; |
| 3535 | |
| 3536 | case IMM_NTFY_ABORT_TASK: |
| 3537 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, |
| 3538 | "qla_target(%d): Abort Task (S %08x I %#x -> " |
| 3539 | "L %#x)\n", vha->vp_idx, |
| 3540 | le16_to_cpu(iocb->u.isp2x.seq_id), |
| 3541 | GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), |
| 3542 | le16_to_cpu(iocb->u.isp2x.lun)); |
| 3543 | if (qlt_abort_task(vha, iocb) == 0) |
| 3544 | send_notify_ack = 0; |
| 3545 | break; |
| 3546 | |
| 3547 | case IMM_NTFY_RESOURCE: |
| 3548 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, |
| 3549 | "qla_target(%d): Out of resources, host %ld\n", |
| 3550 | vha->vp_idx, vha->host_no); |
| 3551 | break; |
| 3552 | |
| 3553 | case IMM_NTFY_MSG_RX: |
| 3554 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, |
| 3555 | "qla_target(%d): Immediate notify task %x\n", |
| 3556 | vha->vp_idx, iocb->u.isp2x.task_flags); |
| 3557 | if (qlt_handle_task_mgmt(vha, iocb) == 0) |
| 3558 | send_notify_ack = 0; |
| 3559 | break; |
| 3560 | |
| 3561 | case IMM_NTFY_ELS: |
| 3562 | if (qlt_24xx_handle_els(vha, iocb) == 0) |
| 3563 | send_notify_ack = 0; |
| 3564 | break; |
| 3565 | |
| 3566 | case IMM_NTFY_SRR: |
| 3567 | qlt_prepare_srr_imm(vha, iocb); |
| 3568 | send_notify_ack = 0; |
| 3569 | break; |
| 3570 | |
| 3571 | default: |
| 3572 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, |
| 3573 | "qla_target(%d): Received unknown immediate " |
| 3574 | "notify status %x\n", vha->vp_idx, status); |
| 3575 | break; |
| 3576 | } |
| 3577 | |
| 3578 | if (send_notify_ack) |
| 3579 | qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0); |
| 3580 | } |
| 3581 | |
| 3582 | /* |
| 3583 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 3584 | * This function sends busy to ISP 2xxx or 24xx. |
| 3585 | */ |
| 3586 | static void qlt_send_busy(struct scsi_qla_host *vha, |
| 3587 | struct atio_from_isp *atio, uint16_t status) |
| 3588 | { |
| 3589 | struct ctio7_to_24xx *ctio24; |
| 3590 | struct qla_hw_data *ha = vha->hw; |
| 3591 | request_t *pkt; |
| 3592 | struct qla_tgt_sess *sess = NULL; |
| 3593 | |
| 3594 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, |
| 3595 | atio->u.isp24.fcp_hdr.s_id); |
| 3596 | if (!sess) { |
| 3597 | qlt_send_term_exchange(vha, NULL, atio, 1); |
| 3598 | return; |
| 3599 | } |
| 3600 | /* Sending marker isn't necessary, since we called from ISR */ |
| 3601 | |
| 3602 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); |
| 3603 | if (!pkt) { |
| 3604 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e, |
| 3605 | "qla_target(%d): %s failed: unable to allocate " |
| 3606 | "request packet", vha->vp_idx, __func__); |
| 3607 | return; |
| 3608 | } |
| 3609 | |
| 3610 | pkt->entry_count = 1; |
| 3611 | pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| 3612 | |
| 3613 | ctio24 = (struct ctio7_to_24xx *)pkt; |
| 3614 | ctio24->entry_type = CTIO_TYPE7; |
| 3615 | ctio24->nport_handle = sess->loop_id; |
| 3616 | ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); |
| 3617 | ctio24->vp_index = vha->vp_idx; |
| 3618 | ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; |
| 3619 | ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; |
| 3620 | ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; |
| 3621 | ctio24->exchange_addr = atio->u.isp24.exchange_addr; |
| 3622 | ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | |
| 3623 | __constant_cpu_to_le16( |
| 3624 | CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | |
| 3625 | CTIO7_FLAGS_DONT_RET_CTIO); |
| 3626 | /* |
| 3627 | * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, |
| 3628 | * if the explicit conformation is used. |
| 3629 | */ |
| 3630 | ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); |
| 3631 | ctio24->u.status1.scsi_status = cpu_to_le16(status); |
| 3632 | ctio24->u.status1.residual = get_unaligned((uint32_t *) |
| 3633 | &atio->u.isp24.fcp_cmnd.add_cdb[ |
| 3634 | atio->u.isp24.fcp_cmnd.add_cdb_len]); |
| 3635 | if (ctio24->u.status1.residual != 0) |
| 3636 | ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; |
| 3637 | |
| 3638 | qla2x00_start_iocbs(vha, vha->req); |
| 3639 | } |
| 3640 | |
| 3641 | /* ha->hardware_lock supposed to be held on entry */ |
| 3642 | /* called via callback from qla2xxx */ |
| 3643 | static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, |
| 3644 | struct atio_from_isp *atio) |
| 3645 | { |
| 3646 | struct qla_hw_data *ha = vha->hw; |
| 3647 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 3648 | int rc; |
| 3649 | |
| 3650 | if (unlikely(tgt == NULL)) { |
| 3651 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039, |
| 3652 | "ATIO pkt, but no tgt (ha %p)", ha); |
| 3653 | return; |
| 3654 | } |
| 3655 | ql_dbg(ql_dbg_tgt, vha, 0xe02c, |
| 3656 | "qla_target(%d): ATIO pkt %p: type %02x count %02x", |
| 3657 | vha->vp_idx, atio, atio->u.raw.entry_type, |
| 3658 | atio->u.raw.entry_count); |
| 3659 | /* |
| 3660 | * In tgt_stop mode we also should allow all requests to pass. |
| 3661 | * Otherwise, some commands can stuck. |
| 3662 | */ |
| 3663 | |
| 3664 | tgt->irq_cmd_count++; |
| 3665 | |
| 3666 | switch (atio->u.raw.entry_type) { |
| 3667 | case ATIO_TYPE7: |
| 3668 | ql_dbg(ql_dbg_tgt, vha, 0xe02d, |
| 3669 | "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, " |
| 3670 | "add_cdb_len %d, data_length %04x, s_id %x:%x:%x\n", |
| 3671 | vha->vp_idx, atio->u.isp24.fcp_cmnd.lun, |
| 3672 | atio->u.isp24.fcp_cmnd.rddata, |
| 3673 | atio->u.isp24.fcp_cmnd.wrdata, |
| 3674 | atio->u.isp24.fcp_cmnd.add_cdb_len, |
| 3675 | be32_to_cpu(get_unaligned((uint32_t *) |
| 3676 | &atio->u.isp24.fcp_cmnd.add_cdb[ |
| 3677 | atio->u.isp24.fcp_cmnd.add_cdb_len])), |
| 3678 | atio->u.isp24.fcp_hdr.s_id[0], |
| 3679 | atio->u.isp24.fcp_hdr.s_id[1], |
| 3680 | atio->u.isp24.fcp_hdr.s_id[2]); |
| 3681 | |
| 3682 | if (unlikely(atio->u.isp24.exchange_addr == |
| 3683 | ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { |
| 3684 | ql_dbg(ql_dbg_tgt, vha, 0xe058, |
| 3685 | "qla_target(%d): ATIO_TYPE7 " |
| 3686 | "received with UNKNOWN exchange address, " |
| 3687 | "sending QUEUE_FULL\n", vha->vp_idx); |
| 3688 | qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL); |
| 3689 | break; |
| 3690 | } |
| 3691 | if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) |
| 3692 | rc = qlt_handle_cmd_for_atio(vha, atio); |
| 3693 | else |
| 3694 | rc = qlt_handle_task_mgmt(vha, atio); |
| 3695 | if (unlikely(rc != 0)) { |
| 3696 | if (rc == -ESRCH) { |
| 3697 | #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ |
| 3698 | qlt_send_busy(vha, atio, SAM_STAT_BUSY); |
| 3699 | #else |
| 3700 | qlt_send_term_exchange(vha, NULL, atio, 1); |
| 3701 | #endif |
| 3702 | } else { |
| 3703 | if (tgt->tgt_stop) { |
| 3704 | ql_dbg(ql_dbg_tgt, vha, 0xe059, |
| 3705 | "qla_target: Unable to send " |
| 3706 | "command to target for req, " |
| 3707 | "ignoring.\n"); |
| 3708 | } else { |
| 3709 | ql_dbg(ql_dbg_tgt, vha, 0xe05a, |
| 3710 | "qla_target(%d): Unable to send " |
| 3711 | "command to target, sending BUSY " |
| 3712 | "status.\n", vha->vp_idx); |
| 3713 | qlt_send_busy(vha, atio, SAM_STAT_BUSY); |
| 3714 | } |
| 3715 | } |
| 3716 | } |
| 3717 | break; |
| 3718 | |
| 3719 | case IMMED_NOTIFY_TYPE: |
| 3720 | { |
| 3721 | if (unlikely(atio->u.isp2x.entry_status != 0)) { |
| 3722 | ql_dbg(ql_dbg_tgt, vha, 0xe05b, |
| 3723 | "qla_target(%d): Received ATIO packet %x " |
| 3724 | "with error status %x\n", vha->vp_idx, |
| 3725 | atio->u.raw.entry_type, |
| 3726 | atio->u.isp2x.entry_status); |
| 3727 | break; |
| 3728 | } |
| 3729 | ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); |
| 3730 | qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); |
| 3731 | break; |
| 3732 | } |
| 3733 | |
| 3734 | default: |
| 3735 | ql_dbg(ql_dbg_tgt, vha, 0xe05c, |
| 3736 | "qla_target(%d): Received unknown ATIO atio " |
| 3737 | "type %x\n", vha->vp_idx, atio->u.raw.entry_type); |
| 3738 | break; |
| 3739 | } |
| 3740 | |
| 3741 | tgt->irq_cmd_count--; |
| 3742 | } |
| 3743 | |
| 3744 | /* ha->hardware_lock supposed to be held on entry */ |
| 3745 | /* called via callback from qla2xxx */ |
| 3746 | static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) |
| 3747 | { |
| 3748 | struct qla_hw_data *ha = vha->hw; |
| 3749 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 3750 | |
| 3751 | if (unlikely(tgt == NULL)) { |
| 3752 | ql_dbg(ql_dbg_tgt, vha, 0xe05d, |
| 3753 | "qla_target(%d): Response pkt %x received, but no " |
| 3754 | "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha); |
| 3755 | return; |
| 3756 | } |
| 3757 | |
| 3758 | ql_dbg(ql_dbg_tgt, vha, 0xe02f, |
| 3759 | "qla_target(%d): response pkt %p: T %02x C %02x S %02x " |
| 3760 | "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type, |
| 3761 | pkt->entry_count, pkt->entry_status, pkt->handle); |
| 3762 | |
| 3763 | /* |
| 3764 | * In tgt_stop mode we also should allow all requests to pass. |
| 3765 | * Otherwise, some commands can stuck. |
| 3766 | */ |
| 3767 | |
| 3768 | tgt->irq_cmd_count++; |
| 3769 | |
| 3770 | switch (pkt->entry_type) { |
| 3771 | case CTIO_TYPE7: |
| 3772 | { |
| 3773 | struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; |
| 3774 | ql_dbg(ql_dbg_tgt, vha, 0xe030, "CTIO_TYPE7: instance %d\n", |
| 3775 | vha->vp_idx); |
| 3776 | qlt_do_ctio_completion(vha, entry->handle, |
| 3777 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), |
| 3778 | entry); |
| 3779 | break; |
| 3780 | } |
| 3781 | |
| 3782 | case ACCEPT_TGT_IO_TYPE: |
| 3783 | { |
| 3784 | struct atio_from_isp *atio = (struct atio_from_isp *)pkt; |
| 3785 | int rc; |
| 3786 | ql_dbg(ql_dbg_tgt, vha, 0xe031, |
| 3787 | "ACCEPT_TGT_IO instance %d status %04x " |
| 3788 | "lun %04x read/write %d data_length %04x " |
| 3789 | "target_id %02x rx_id %04x\n ", vha->vp_idx, |
| 3790 | le16_to_cpu(atio->u.isp2x.status), |
| 3791 | le16_to_cpu(atio->u.isp2x.lun), |
| 3792 | atio->u.isp2x.execution_codes, |
| 3793 | le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha, |
| 3794 | atio), atio->u.isp2x.rx_id); |
| 3795 | if (atio->u.isp2x.status != |
| 3796 | __constant_cpu_to_le16(ATIO_CDB_VALID)) { |
| 3797 | ql_dbg(ql_dbg_tgt, vha, 0xe05e, |
| 3798 | "qla_target(%d): ATIO with error " |
| 3799 | "status %x received\n", vha->vp_idx, |
| 3800 | le16_to_cpu(atio->u.isp2x.status)); |
| 3801 | break; |
| 3802 | } |
| 3803 | ql_dbg(ql_dbg_tgt, vha, 0xe032, |
| 3804 | "FCP CDB: 0x%02x, sizeof(cdb): %lu", |
| 3805 | atio->u.isp2x.cdb[0], (unsigned long |
| 3806 | int)sizeof(atio->u.isp2x.cdb)); |
| 3807 | |
| 3808 | rc = qlt_handle_cmd_for_atio(vha, atio); |
| 3809 | if (unlikely(rc != 0)) { |
| 3810 | if (rc == -ESRCH) { |
| 3811 | #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ |
| 3812 | qlt_send_busy(vha, atio, 0); |
| 3813 | #else |
| 3814 | qlt_send_term_exchange(vha, NULL, atio, 1); |
| 3815 | #endif |
| 3816 | } else { |
| 3817 | if (tgt->tgt_stop) { |
| 3818 | ql_dbg(ql_dbg_tgt, vha, 0xe05f, |
| 3819 | "qla_target: Unable to send " |
| 3820 | "command to target, sending TERM " |
| 3821 | "EXCHANGE for rsp\n"); |
| 3822 | qlt_send_term_exchange(vha, NULL, |
| 3823 | atio, 1); |
| 3824 | } else { |
| 3825 | ql_dbg(ql_dbg_tgt, vha, 0xe060, |
| 3826 | "qla_target(%d): Unable to send " |
| 3827 | "command to target, sending BUSY " |
| 3828 | "status\n", vha->vp_idx); |
| 3829 | qlt_send_busy(vha, atio, 0); |
| 3830 | } |
| 3831 | } |
| 3832 | } |
| 3833 | } |
| 3834 | break; |
| 3835 | |
| 3836 | case CONTINUE_TGT_IO_TYPE: |
| 3837 | { |
| 3838 | struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; |
| 3839 | ql_dbg(ql_dbg_tgt, vha, 0xe033, |
| 3840 | "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx); |
| 3841 | qlt_do_ctio_completion(vha, entry->handle, |
| 3842 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), |
| 3843 | entry); |
| 3844 | break; |
| 3845 | } |
| 3846 | |
| 3847 | case CTIO_A64_TYPE: |
| 3848 | { |
| 3849 | struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; |
| 3850 | ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n", |
| 3851 | vha->vp_idx); |
| 3852 | qlt_do_ctio_completion(vha, entry->handle, |
| 3853 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), |
| 3854 | entry); |
| 3855 | break; |
| 3856 | } |
| 3857 | |
| 3858 | case IMMED_NOTIFY_TYPE: |
| 3859 | ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); |
| 3860 | qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); |
| 3861 | break; |
| 3862 | |
| 3863 | case NOTIFY_ACK_TYPE: |
| 3864 | if (tgt->notify_ack_expected > 0) { |
| 3865 | struct nack_to_isp *entry = (struct nack_to_isp *)pkt; |
| 3866 | ql_dbg(ql_dbg_tgt, vha, 0xe036, |
| 3867 | "NOTIFY_ACK seq %08x status %x\n", |
| 3868 | le16_to_cpu(entry->u.isp2x.seq_id), |
| 3869 | le16_to_cpu(entry->u.isp2x.status)); |
| 3870 | tgt->notify_ack_expected--; |
| 3871 | if (entry->u.isp2x.status != |
| 3872 | __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) { |
| 3873 | ql_dbg(ql_dbg_tgt, vha, 0xe061, |
| 3874 | "qla_target(%d): NOTIFY_ACK " |
| 3875 | "failed %x\n", vha->vp_idx, |
| 3876 | le16_to_cpu(entry->u.isp2x.status)); |
| 3877 | } |
| 3878 | } else { |
| 3879 | ql_dbg(ql_dbg_tgt, vha, 0xe062, |
| 3880 | "qla_target(%d): Unexpected NOTIFY_ACK received\n", |
| 3881 | vha->vp_idx); |
| 3882 | } |
| 3883 | break; |
| 3884 | |
| 3885 | case ABTS_RECV_24XX: |
| 3886 | ql_dbg(ql_dbg_tgt, vha, 0xe037, |
| 3887 | "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); |
| 3888 | qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); |
| 3889 | break; |
| 3890 | |
| 3891 | case ABTS_RESP_24XX: |
| 3892 | if (tgt->abts_resp_expected > 0) { |
| 3893 | struct abts_resp_from_24xx_fw *entry = |
| 3894 | (struct abts_resp_from_24xx_fw *)pkt; |
| 3895 | ql_dbg(ql_dbg_tgt, vha, 0xe038, |
| 3896 | "ABTS_RESP_24XX: compl_status %x\n", |
| 3897 | entry->compl_status); |
| 3898 | tgt->abts_resp_expected--; |
| 3899 | if (le16_to_cpu(entry->compl_status) != |
| 3900 | ABTS_RESP_COMPL_SUCCESS) { |
| 3901 | if ((entry->error_subcode1 == 0x1E) && |
| 3902 | (entry->error_subcode2 == 0)) { |
| 3903 | /* |
| 3904 | * We've got a race here: aborted |
| 3905 | * exchange not terminated, i.e. |
| 3906 | * response for the aborted command was |
| 3907 | * sent between the abort request was |
| 3908 | * received and processed. |
| 3909 | * Unfortunately, the firmware has a |
| 3910 | * silly requirement that all aborted |
| 3911 | * exchanges must be explicitely |
| 3912 | * terminated, otherwise it refuses to |
| 3913 | * send responses for the abort |
| 3914 | * requests. So, we have to |
| 3915 | * (re)terminate the exchange and retry |
| 3916 | * the abort response. |
| 3917 | */ |
| 3918 | qlt_24xx_retry_term_exchange(vha, |
| 3919 | entry); |
| 3920 | } else |
| 3921 | ql_dbg(ql_dbg_tgt, vha, 0xe063, |
| 3922 | "qla_target(%d): ABTS_RESP_24XX " |
| 3923 | "failed %x (subcode %x:%x)", |
| 3924 | vha->vp_idx, entry->compl_status, |
| 3925 | entry->error_subcode1, |
| 3926 | entry->error_subcode2); |
| 3927 | } |
| 3928 | } else { |
| 3929 | ql_dbg(ql_dbg_tgt, vha, 0xe064, |
| 3930 | "qla_target(%d): Unexpected ABTS_RESP_24XX " |
| 3931 | "received\n", vha->vp_idx); |
| 3932 | } |
| 3933 | break; |
| 3934 | |
| 3935 | default: |
| 3936 | ql_dbg(ql_dbg_tgt, vha, 0xe065, |
| 3937 | "qla_target(%d): Received unknown response pkt " |
| 3938 | "type %x\n", vha->vp_idx, pkt->entry_type); |
| 3939 | break; |
| 3940 | } |
| 3941 | |
| 3942 | tgt->irq_cmd_count--; |
| 3943 | } |
| 3944 | |
| 3945 | /* |
| 3946 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| 3947 | */ |
| 3948 | void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, |
| 3949 | uint16_t *mailbox) |
| 3950 | { |
| 3951 | struct qla_hw_data *ha = vha->hw; |
| 3952 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
Alan Cox | 4f1d0f1 | 2012-07-04 16:35:35 +0100 | [diff] [blame] | 3953 | int login_code; |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 3954 | |
| 3955 | ql_dbg(ql_dbg_tgt, vha, 0xe039, |
| 3956 | "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n", |
| 3957 | vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done, |
| 3958 | ha->operating_mode, ha->current_topology); |
| 3959 | |
| 3960 | if (!ha->tgt.tgt_ops) |
| 3961 | return; |
| 3962 | |
| 3963 | if (unlikely(tgt == NULL)) { |
| 3964 | ql_dbg(ql_dbg_tgt, vha, 0xe03a, |
| 3965 | "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha); |
| 3966 | return; |
| 3967 | } |
| 3968 | |
| 3969 | if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && |
| 3970 | IS_QLA2100(ha)) |
| 3971 | return; |
| 3972 | /* |
| 3973 | * In tgt_stop mode we also should allow all requests to pass. |
| 3974 | * Otherwise, some commands can stuck. |
| 3975 | */ |
| 3976 | |
| 3977 | tgt->irq_cmd_count++; |
| 3978 | |
| 3979 | switch (code) { |
| 3980 | case MBA_RESET: /* Reset */ |
| 3981 | case MBA_SYSTEM_ERR: /* System Error */ |
| 3982 | case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ |
| 3983 | case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ |
| 3984 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, |
| 3985 | "qla_target(%d): System error async event %#x " |
| 3986 | "occured", vha->vp_idx, code); |
| 3987 | break; |
| 3988 | case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ |
| 3989 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| 3990 | break; |
| 3991 | |
| 3992 | case MBA_LOOP_UP: |
| 3993 | { |
| 3994 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, |
| 3995 | "qla_target(%d): Async LOOP_UP occured " |
Alan Cox | 4f1d0f1 | 2012-07-04 16:35:35 +0100 | [diff] [blame] | 3996 | "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, |
| 3997 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), |
| 3998 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 3999 | if (tgt->link_reinit_iocb_pending) { |
| 4000 | qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb, |
| 4001 | 0, 0, 0, 0, 0, 0); |
| 4002 | tgt->link_reinit_iocb_pending = 0; |
| 4003 | } |
| 4004 | break; |
| 4005 | } |
| 4006 | |
| 4007 | case MBA_LIP_OCCURRED: |
| 4008 | case MBA_LOOP_DOWN: |
| 4009 | case MBA_LIP_RESET: |
| 4010 | case MBA_RSCN_UPDATE: |
| 4011 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, |
| 4012 | "qla_target(%d): Async event %#x occured " |
Alan Cox | 4f1d0f1 | 2012-07-04 16:35:35 +0100 | [diff] [blame] | 4013 | "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, |
| 4014 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), |
| 4015 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 4016 | break; |
| 4017 | |
| 4018 | case MBA_PORT_UPDATE: |
| 4019 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, |
| 4020 | "qla_target(%d): Port update async event %#x " |
Alan Cox | 4f1d0f1 | 2012-07-04 16:35:35 +0100 | [diff] [blame] | 4021 | "occured: updating the ports database (m[0]=%x, m[1]=%x, " |
| 4022 | "m[2]=%x, m[3]=%x)", vha->vp_idx, code, |
| 4023 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), |
| 4024 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); |
| 4025 | |
| 4026 | login_code = le16_to_cpu(mailbox[2]); |
| 4027 | if (login_code == 0x4) |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 4028 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, |
| 4029 | "Async MB 2: Got PLOGI Complete\n"); |
Alan Cox | 4f1d0f1 | 2012-07-04 16:35:35 +0100 | [diff] [blame] | 4030 | else if (login_code == 0x7) |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 4031 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, |
| 4032 | "Async MB 2: Port Logged Out\n"); |
| 4033 | break; |
| 4034 | |
| 4035 | default: |
| 4036 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040, |
| 4037 | "qla_target(%d): Async event %#x occured: " |
Alan Cox | 4f1d0f1 | 2012-07-04 16:35:35 +0100 | [diff] [blame] | 4038 | "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, |
| 4039 | code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), |
| 4040 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); |
Nicholas Bellinger | 2d70c10 | 2012-05-15 14:34:28 -0400 | [diff] [blame] | 4041 | break; |
| 4042 | } |
| 4043 | |
| 4044 | tgt->irq_cmd_count--; |
| 4045 | } |
| 4046 | |
| 4047 | static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, |
| 4048 | uint16_t loop_id) |
| 4049 | { |
| 4050 | fc_port_t *fcport; |
| 4051 | int rc; |
| 4052 | |
| 4053 | fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); |
| 4054 | if (!fcport) { |
| 4055 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, |
| 4056 | "qla_target(%d): Allocation of tmp FC port failed", |
| 4057 | vha->vp_idx); |
| 4058 | return NULL; |
| 4059 | } |
| 4060 | |
| 4061 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id); |
| 4062 | |
| 4063 | fcport->loop_id = loop_id; |
| 4064 | |
| 4065 | rc = qla2x00_get_port_database(vha, fcport, 0); |
| 4066 | if (rc != QLA_SUCCESS) { |
| 4067 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, |
| 4068 | "qla_target(%d): Failed to retrieve fcport " |
| 4069 | "information -- get_port_database() returned %x " |
| 4070 | "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); |
| 4071 | kfree(fcport); |
| 4072 | return NULL; |
| 4073 | } |
| 4074 | |
| 4075 | return fcport; |
| 4076 | } |
| 4077 | |
| 4078 | /* Must be called under tgt_mutex */ |
| 4079 | static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha, |
| 4080 | uint8_t *s_id) |
| 4081 | { |
| 4082 | struct qla_hw_data *ha = vha->hw; |
| 4083 | struct qla_tgt_sess *sess = NULL; |
| 4084 | fc_port_t *fcport = NULL; |
| 4085 | int rc, global_resets; |
| 4086 | uint16_t loop_id = 0; |
| 4087 | |
| 4088 | retry: |
| 4089 | global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count); |
| 4090 | |
| 4091 | rc = qla24xx_get_loop_id(vha, s_id, &loop_id); |
| 4092 | if (rc != 0) { |
| 4093 | if ((s_id[0] == 0xFF) && |
| 4094 | (s_id[1] == 0xFC)) { |
| 4095 | /* |
| 4096 | * This is Domain Controller, so it should be |
| 4097 | * OK to drop SCSI commands from it. |
| 4098 | */ |
| 4099 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, |
| 4100 | "Unable to find initiator with S_ID %x:%x:%x", |
| 4101 | s_id[0], s_id[1], s_id[2]); |
| 4102 | } else |
| 4103 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071, |
| 4104 | "qla_target(%d): Unable to find " |
| 4105 | "initiator with S_ID %x:%x:%x", |
| 4106 | vha->vp_idx, s_id[0], s_id[1], |
| 4107 | s_id[2]); |
| 4108 | return NULL; |
| 4109 | } |
| 4110 | |
| 4111 | fcport = qlt_get_port_database(vha, loop_id); |
| 4112 | if (!fcport) |
| 4113 | return NULL; |
| 4114 | |
| 4115 | if (global_resets != |
| 4116 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) { |
| 4117 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, |
| 4118 | "qla_target(%d): global reset during session discovery " |
| 4119 | "(counter was %d, new %d), retrying", vha->vp_idx, |
| 4120 | global_resets, |
| 4121 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)); |
| 4122 | goto retry; |
| 4123 | } |
| 4124 | |
| 4125 | sess = qlt_create_sess(vha, fcport, true); |
| 4126 | |
| 4127 | kfree(fcport); |
| 4128 | return sess; |
| 4129 | } |
| 4130 | |
| 4131 | static void qlt_abort_work(struct qla_tgt *tgt, |
| 4132 | struct qla_tgt_sess_work_param *prm) |
| 4133 | { |
| 4134 | struct scsi_qla_host *vha = tgt->vha; |
| 4135 | struct qla_hw_data *ha = vha->hw; |
| 4136 | struct qla_tgt_sess *sess = NULL; |
| 4137 | unsigned long flags; |
| 4138 | uint32_t be_s_id; |
| 4139 | uint8_t s_id[3]; |
| 4140 | int rc; |
| 4141 | |
| 4142 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4143 | |
| 4144 | if (tgt->tgt_stop) |
| 4145 | goto out_term; |
| 4146 | |
| 4147 | s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; |
| 4148 | s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; |
| 4149 | s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; |
| 4150 | |
| 4151 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, |
| 4152 | (unsigned char *)&be_s_id); |
| 4153 | if (!sess) { |
| 4154 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4155 | |
| 4156 | mutex_lock(&ha->tgt.tgt_mutex); |
| 4157 | sess = qlt_make_local_sess(vha, s_id); |
| 4158 | /* sess has got an extra creation ref */ |
| 4159 | mutex_unlock(&ha->tgt.tgt_mutex); |
| 4160 | |
| 4161 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4162 | if (!sess) |
| 4163 | goto out_term; |
| 4164 | } else { |
| 4165 | kref_get(&sess->se_sess->sess_kref); |
| 4166 | } |
| 4167 | |
| 4168 | if (tgt->tgt_stop) |
| 4169 | goto out_term; |
| 4170 | |
| 4171 | rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); |
| 4172 | if (rc != 0) |
| 4173 | goto out_term; |
| 4174 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4175 | |
| 4176 | ha->tgt.tgt_ops->put_sess(sess); |
| 4177 | return; |
| 4178 | |
| 4179 | out_term: |
| 4180 | qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); |
| 4181 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4182 | if (sess) |
| 4183 | ha->tgt.tgt_ops->put_sess(sess); |
| 4184 | } |
| 4185 | |
| 4186 | static void qlt_tmr_work(struct qla_tgt *tgt, |
| 4187 | struct qla_tgt_sess_work_param *prm) |
| 4188 | { |
| 4189 | struct atio_from_isp *a = &prm->tm_iocb2; |
| 4190 | struct scsi_qla_host *vha = tgt->vha; |
| 4191 | struct qla_hw_data *ha = vha->hw; |
| 4192 | struct qla_tgt_sess *sess = NULL; |
| 4193 | unsigned long flags; |
| 4194 | uint8_t *s_id = NULL; /* to hide compiler warnings */ |
| 4195 | int rc; |
| 4196 | uint32_t lun, unpacked_lun; |
| 4197 | int lun_size, fn; |
| 4198 | void *iocb; |
| 4199 | |
| 4200 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4201 | |
| 4202 | if (tgt->tgt_stop) |
| 4203 | goto out_term; |
| 4204 | |
| 4205 | s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; |
| 4206 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); |
| 4207 | if (!sess) { |
| 4208 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4209 | |
| 4210 | mutex_lock(&ha->tgt.tgt_mutex); |
| 4211 | sess = qlt_make_local_sess(vha, s_id); |
| 4212 | /* sess has got an extra creation ref */ |
| 4213 | mutex_unlock(&ha->tgt.tgt_mutex); |
| 4214 | |
| 4215 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4216 | if (!sess) |
| 4217 | goto out_term; |
| 4218 | } else { |
| 4219 | kref_get(&sess->se_sess->sess_kref); |
| 4220 | } |
| 4221 | |
| 4222 | iocb = a; |
| 4223 | lun = a->u.isp24.fcp_cmnd.lun; |
| 4224 | lun_size = sizeof(lun); |
| 4225 | fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; |
| 4226 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); |
| 4227 | |
| 4228 | rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); |
| 4229 | if (rc != 0) |
| 4230 | goto out_term; |
| 4231 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4232 | |
| 4233 | ha->tgt.tgt_ops->put_sess(sess); |
| 4234 | return; |
| 4235 | |
| 4236 | out_term: |
| 4237 | qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1); |
| 4238 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4239 | if (sess) |
| 4240 | ha->tgt.tgt_ops->put_sess(sess); |
| 4241 | } |
| 4242 | |
| 4243 | static void qlt_sess_work_fn(struct work_struct *work) |
| 4244 | { |
| 4245 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); |
| 4246 | struct scsi_qla_host *vha = tgt->vha; |
| 4247 | unsigned long flags; |
| 4248 | |
| 4249 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); |
| 4250 | |
| 4251 | spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| 4252 | while (!list_empty(&tgt->sess_works_list)) { |
| 4253 | struct qla_tgt_sess_work_param *prm = list_entry( |
| 4254 | tgt->sess_works_list.next, typeof(*prm), |
| 4255 | sess_works_list_entry); |
| 4256 | |
| 4257 | /* |
| 4258 | * This work can be scheduled on several CPUs at time, so we |
| 4259 | * must delete the entry to eliminate double processing |
| 4260 | */ |
| 4261 | list_del(&prm->sess_works_list_entry); |
| 4262 | |
| 4263 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| 4264 | |
| 4265 | switch (prm->type) { |
| 4266 | case QLA_TGT_SESS_WORK_ABORT: |
| 4267 | qlt_abort_work(tgt, prm); |
| 4268 | break; |
| 4269 | case QLA_TGT_SESS_WORK_TM: |
| 4270 | qlt_tmr_work(tgt, prm); |
| 4271 | break; |
| 4272 | default: |
| 4273 | BUG_ON(1); |
| 4274 | break; |
| 4275 | } |
| 4276 | |
| 4277 | spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| 4278 | |
| 4279 | kfree(prm); |
| 4280 | } |
| 4281 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| 4282 | } |
| 4283 | |
| 4284 | /* Must be called under tgt_host_action_mutex */ |
| 4285 | int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) |
| 4286 | { |
| 4287 | struct qla_tgt *tgt; |
| 4288 | |
| 4289 | if (!QLA_TGT_MODE_ENABLED()) |
| 4290 | return 0; |
| 4291 | |
| 4292 | ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, |
| 4293 | "Registering target for host %ld(%p)", base_vha->host_no, ha); |
| 4294 | |
| 4295 | BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != NULL)); |
| 4296 | |
| 4297 | tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); |
| 4298 | if (!tgt) { |
| 4299 | ql_dbg(ql_dbg_tgt, base_vha, 0xe066, |
| 4300 | "Unable to allocate struct qla_tgt\n"); |
| 4301 | return -ENOMEM; |
| 4302 | } |
| 4303 | |
| 4304 | if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) |
| 4305 | base_vha->host->hostt->supported_mode |= MODE_TARGET; |
| 4306 | |
| 4307 | tgt->ha = ha; |
| 4308 | tgt->vha = base_vha; |
| 4309 | init_waitqueue_head(&tgt->waitQ); |
| 4310 | INIT_LIST_HEAD(&tgt->sess_list); |
| 4311 | INIT_LIST_HEAD(&tgt->del_sess_list); |
| 4312 | INIT_DELAYED_WORK(&tgt->sess_del_work, |
| 4313 | (void (*)(struct work_struct *))qlt_del_sess_work_fn); |
| 4314 | spin_lock_init(&tgt->sess_work_lock); |
| 4315 | INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); |
| 4316 | INIT_LIST_HEAD(&tgt->sess_works_list); |
| 4317 | spin_lock_init(&tgt->srr_lock); |
| 4318 | INIT_LIST_HEAD(&tgt->srr_ctio_list); |
| 4319 | INIT_LIST_HEAD(&tgt->srr_imm_list); |
| 4320 | INIT_WORK(&tgt->srr_work, qlt_handle_srr_work); |
| 4321 | atomic_set(&tgt->tgt_global_resets_count, 0); |
| 4322 | |
| 4323 | ha->tgt.qla_tgt = tgt; |
| 4324 | |
| 4325 | ql_dbg(ql_dbg_tgt, base_vha, 0xe067, |
| 4326 | "qla_target(%d): using 64 Bit PCI addressing", |
| 4327 | base_vha->vp_idx); |
| 4328 | tgt->tgt_enable_64bit_addr = 1; |
| 4329 | /* 3 is reserved */ |
| 4330 | tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); |
| 4331 | tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX; |
| 4332 | tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX; |
| 4333 | |
| 4334 | mutex_lock(&qla_tgt_mutex); |
| 4335 | list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); |
| 4336 | mutex_unlock(&qla_tgt_mutex); |
| 4337 | |
| 4338 | return 0; |
| 4339 | } |
| 4340 | |
| 4341 | /* Must be called under tgt_host_action_mutex */ |
| 4342 | int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) |
| 4343 | { |
| 4344 | if (!ha->tgt.qla_tgt) |
| 4345 | return 0; |
| 4346 | |
| 4347 | mutex_lock(&qla_tgt_mutex); |
| 4348 | list_del(&ha->tgt.qla_tgt->tgt_list_entry); |
| 4349 | mutex_unlock(&qla_tgt_mutex); |
| 4350 | |
| 4351 | ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", |
| 4352 | vha->host_no, ha); |
| 4353 | qlt_release(ha->tgt.qla_tgt); |
| 4354 | |
| 4355 | return 0; |
| 4356 | } |
| 4357 | |
| 4358 | static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, |
| 4359 | unsigned char *b) |
| 4360 | { |
| 4361 | int i; |
| 4362 | |
| 4363 | pr_debug("qla2xxx HW vha->node_name: "); |
| 4364 | for (i = 0; i < WWN_SIZE; i++) |
| 4365 | pr_debug("%02x ", vha->node_name[i]); |
| 4366 | pr_debug("\n"); |
| 4367 | pr_debug("qla2xxx HW vha->port_name: "); |
| 4368 | for (i = 0; i < WWN_SIZE; i++) |
| 4369 | pr_debug("%02x ", vha->port_name[i]); |
| 4370 | pr_debug("\n"); |
| 4371 | |
| 4372 | pr_debug("qla2xxx passed configfs WWPN: "); |
| 4373 | put_unaligned_be64(wwpn, b); |
| 4374 | for (i = 0; i < WWN_SIZE; i++) |
| 4375 | pr_debug("%02x ", b[i]); |
| 4376 | pr_debug("\n"); |
| 4377 | } |
| 4378 | |
| 4379 | /** |
| 4380 | * qla_tgt_lport_register - register lport with external module |
| 4381 | * |
| 4382 | * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops |
| 4383 | * @wwpn: Passwd FC target WWPN |
| 4384 | * @callback: lport initialization callback for tcm_qla2xxx code |
| 4385 | * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data |
| 4386 | */ |
| 4387 | int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn, |
| 4388 | int (*callback)(struct scsi_qla_host *), void *target_lport_ptr) |
| 4389 | { |
| 4390 | struct qla_tgt *tgt; |
| 4391 | struct scsi_qla_host *vha; |
| 4392 | struct qla_hw_data *ha; |
| 4393 | struct Scsi_Host *host; |
| 4394 | unsigned long flags; |
| 4395 | int rc; |
| 4396 | u8 b[WWN_SIZE]; |
| 4397 | |
| 4398 | mutex_lock(&qla_tgt_mutex); |
| 4399 | list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { |
| 4400 | vha = tgt->vha; |
| 4401 | ha = vha->hw; |
| 4402 | |
| 4403 | host = vha->host; |
| 4404 | if (!host) |
| 4405 | continue; |
| 4406 | |
| 4407 | if (ha->tgt.tgt_ops != NULL) |
| 4408 | continue; |
| 4409 | |
| 4410 | if (!(host->hostt->supported_mode & MODE_TARGET)) |
| 4411 | continue; |
| 4412 | |
| 4413 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4414 | if (host->active_mode & MODE_TARGET) { |
| 4415 | pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", |
| 4416 | host->host_no); |
| 4417 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4418 | continue; |
| 4419 | } |
| 4420 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4421 | |
| 4422 | if (!scsi_host_get(host)) { |
| 4423 | ql_dbg(ql_dbg_tgt, vha, 0xe068, |
| 4424 | "Unable to scsi_host_get() for" |
| 4425 | " qla2xxx scsi_host\n"); |
| 4426 | continue; |
| 4427 | } |
| 4428 | qlt_lport_dump(vha, wwpn, b); |
| 4429 | |
| 4430 | if (memcmp(vha->port_name, b, WWN_SIZE)) { |
| 4431 | scsi_host_put(host); |
| 4432 | continue; |
| 4433 | } |
| 4434 | /* |
| 4435 | * Setup passed parameters ahead of invoking callback |
| 4436 | */ |
| 4437 | ha->tgt.tgt_ops = qla_tgt_ops; |
| 4438 | ha->tgt.target_lport_ptr = target_lport_ptr; |
| 4439 | rc = (*callback)(vha); |
| 4440 | if (rc != 0) { |
| 4441 | ha->tgt.tgt_ops = NULL; |
| 4442 | ha->tgt.target_lport_ptr = NULL; |
| 4443 | } |
| 4444 | mutex_unlock(&qla_tgt_mutex); |
| 4445 | return rc; |
| 4446 | } |
| 4447 | mutex_unlock(&qla_tgt_mutex); |
| 4448 | |
| 4449 | return -ENODEV; |
| 4450 | } |
| 4451 | EXPORT_SYMBOL(qlt_lport_register); |
| 4452 | |
| 4453 | /** |
| 4454 | * qla_tgt_lport_deregister - Degister lport |
| 4455 | * |
| 4456 | * @vha: Registered scsi_qla_host pointer |
| 4457 | */ |
| 4458 | void qlt_lport_deregister(struct scsi_qla_host *vha) |
| 4459 | { |
| 4460 | struct qla_hw_data *ha = vha->hw; |
| 4461 | struct Scsi_Host *sh = vha->host; |
| 4462 | /* |
| 4463 | * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data |
| 4464 | */ |
| 4465 | ha->tgt.target_lport_ptr = NULL; |
| 4466 | ha->tgt.tgt_ops = NULL; |
| 4467 | /* |
| 4468 | * Release the Scsi_Host reference for the underlying qla2xxx host |
| 4469 | */ |
| 4470 | scsi_host_put(sh); |
| 4471 | } |
| 4472 | EXPORT_SYMBOL(qlt_lport_deregister); |
| 4473 | |
| 4474 | /* Must be called under HW lock */ |
| 4475 | void qlt_set_mode(struct scsi_qla_host *vha) |
| 4476 | { |
| 4477 | struct qla_hw_data *ha = vha->hw; |
| 4478 | |
| 4479 | switch (ql2x_ini_mode) { |
| 4480 | case QLA2XXX_INI_MODE_DISABLED: |
| 4481 | case QLA2XXX_INI_MODE_EXCLUSIVE: |
| 4482 | vha->host->active_mode = MODE_TARGET; |
| 4483 | break; |
| 4484 | case QLA2XXX_INI_MODE_ENABLED: |
| 4485 | vha->host->active_mode |= MODE_TARGET; |
| 4486 | break; |
| 4487 | default: |
| 4488 | break; |
| 4489 | } |
| 4490 | |
| 4491 | if (ha->tgt.ini_mode_force_reverse) |
| 4492 | qla_reverse_ini_mode(vha); |
| 4493 | } |
| 4494 | |
| 4495 | /* Must be called under HW lock */ |
| 4496 | void qlt_clear_mode(struct scsi_qla_host *vha) |
| 4497 | { |
| 4498 | struct qla_hw_data *ha = vha->hw; |
| 4499 | |
| 4500 | switch (ql2x_ini_mode) { |
| 4501 | case QLA2XXX_INI_MODE_DISABLED: |
| 4502 | vha->host->active_mode = MODE_UNKNOWN; |
| 4503 | break; |
| 4504 | case QLA2XXX_INI_MODE_EXCLUSIVE: |
| 4505 | vha->host->active_mode = MODE_INITIATOR; |
| 4506 | break; |
| 4507 | case QLA2XXX_INI_MODE_ENABLED: |
| 4508 | vha->host->active_mode &= ~MODE_TARGET; |
| 4509 | break; |
| 4510 | default: |
| 4511 | break; |
| 4512 | } |
| 4513 | |
| 4514 | if (ha->tgt.ini_mode_force_reverse) |
| 4515 | qla_reverse_ini_mode(vha); |
| 4516 | } |
| 4517 | |
| 4518 | /* |
| 4519 | * qla_tgt_enable_vha - NO LOCK HELD |
| 4520 | * |
| 4521 | * host_reset, bring up w/ Target Mode Enabled |
| 4522 | */ |
| 4523 | void |
| 4524 | qlt_enable_vha(struct scsi_qla_host *vha) |
| 4525 | { |
| 4526 | struct qla_hw_data *ha = vha->hw; |
| 4527 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 4528 | unsigned long flags; |
| 4529 | |
| 4530 | if (!tgt) { |
| 4531 | ql_dbg(ql_dbg_tgt, vha, 0xe069, |
| 4532 | "Unable to locate qla_tgt pointer from" |
| 4533 | " struct qla_hw_data\n"); |
| 4534 | dump_stack(); |
| 4535 | return; |
| 4536 | } |
| 4537 | |
| 4538 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4539 | tgt->tgt_stopped = 0; |
| 4540 | qlt_set_mode(vha); |
| 4541 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4542 | |
| 4543 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| 4544 | qla2xxx_wake_dpc(vha); |
| 4545 | qla2x00_wait_for_hba_online(vha); |
| 4546 | } |
| 4547 | EXPORT_SYMBOL(qlt_enable_vha); |
| 4548 | |
| 4549 | /* |
| 4550 | * qla_tgt_disable_vha - NO LOCK HELD |
| 4551 | * |
| 4552 | * Disable Target Mode and reset the adapter |
| 4553 | */ |
| 4554 | void |
| 4555 | qlt_disable_vha(struct scsi_qla_host *vha) |
| 4556 | { |
| 4557 | struct qla_hw_data *ha = vha->hw; |
| 4558 | struct qla_tgt *tgt = ha->tgt.qla_tgt; |
| 4559 | unsigned long flags; |
| 4560 | |
| 4561 | if (!tgt) { |
| 4562 | ql_dbg(ql_dbg_tgt, vha, 0xe06a, |
| 4563 | "Unable to locate qla_tgt pointer from" |
| 4564 | " struct qla_hw_data\n"); |
| 4565 | dump_stack(); |
| 4566 | return; |
| 4567 | } |
| 4568 | |
| 4569 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 4570 | qlt_clear_mode(vha); |
| 4571 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 4572 | |
| 4573 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| 4574 | qla2xxx_wake_dpc(vha); |
| 4575 | qla2x00_wait_for_hba_online(vha); |
| 4576 | } |
| 4577 | |
| 4578 | /* |
| 4579 | * Called from qla_init.c:qla24xx_vport_create() contex to setup |
| 4580 | * the target mode specific struct scsi_qla_host and struct qla_hw_data |
| 4581 | * members. |
| 4582 | */ |
| 4583 | void |
| 4584 | qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) |
| 4585 | { |
| 4586 | if (!qla_tgt_mode_enabled(vha)) |
| 4587 | return; |
| 4588 | |
| 4589 | mutex_init(&ha->tgt.tgt_mutex); |
| 4590 | mutex_init(&ha->tgt.tgt_host_action_mutex); |
| 4591 | |
| 4592 | qlt_clear_mode(vha); |
| 4593 | |
| 4594 | /* |
| 4595 | * NOTE: Currently the value is kept the same for <24xx and |
| 4596 | * >=24xx ISPs. If it is necessary to change it, |
| 4597 | * the check should be added for specific ISPs, |
| 4598 | * assigning the value appropriately. |
| 4599 | */ |
| 4600 | ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; |
| 4601 | } |
| 4602 | |
| 4603 | void |
| 4604 | qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) |
| 4605 | { |
| 4606 | /* |
| 4607 | * FC-4 Feature bit 0 indicates target functionality to the name server. |
| 4608 | */ |
| 4609 | if (qla_tgt_mode_enabled(vha)) { |
| 4610 | if (qla_ini_mode_enabled(vha)) |
| 4611 | ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; |
| 4612 | else |
| 4613 | ct_req->req.rff_id.fc4_feature = BIT_0; |
| 4614 | } else if (qla_ini_mode_enabled(vha)) { |
| 4615 | ct_req->req.rff_id.fc4_feature = BIT_1; |
| 4616 | } |
| 4617 | } |
| 4618 | |
| 4619 | /* |
| 4620 | * qlt_init_atio_q_entries() - Initializes ATIO queue entries. |
| 4621 | * @ha: HA context |
| 4622 | * |
| 4623 | * Beginning of ATIO ring has initialization control block already built |
| 4624 | * by nvram config routine. |
| 4625 | * |
| 4626 | * Returns 0 on success. |
| 4627 | */ |
| 4628 | void |
| 4629 | qlt_init_atio_q_entries(struct scsi_qla_host *vha) |
| 4630 | { |
| 4631 | struct qla_hw_data *ha = vha->hw; |
| 4632 | uint16_t cnt; |
| 4633 | struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; |
| 4634 | |
| 4635 | if (!qla_tgt_mode_enabled(vha)) |
| 4636 | return; |
| 4637 | |
| 4638 | for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { |
| 4639 | pkt->u.raw.signature = ATIO_PROCESSED; |
| 4640 | pkt++; |
| 4641 | } |
| 4642 | |
| 4643 | } |
| 4644 | |
| 4645 | /* |
| 4646 | * qlt_24xx_process_atio_queue() - Process ATIO queue entries. |
| 4647 | * @ha: SCSI driver HA context |
| 4648 | */ |
| 4649 | void |
| 4650 | qlt_24xx_process_atio_queue(struct scsi_qla_host *vha) |
| 4651 | { |
| 4652 | struct qla_hw_data *ha = vha->hw; |
| 4653 | struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; |
| 4654 | struct atio_from_isp *pkt; |
| 4655 | int cnt, i; |
| 4656 | |
| 4657 | if (!vha->flags.online) |
| 4658 | return; |
| 4659 | |
| 4660 | while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) { |
| 4661 | pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; |
| 4662 | cnt = pkt->u.raw.entry_count; |
| 4663 | |
| 4664 | qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt); |
| 4665 | |
| 4666 | for (i = 0; i < cnt; i++) { |
| 4667 | ha->tgt.atio_ring_index++; |
| 4668 | if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { |
| 4669 | ha->tgt.atio_ring_index = 0; |
| 4670 | ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; |
| 4671 | } else |
| 4672 | ha->tgt.atio_ring_ptr++; |
| 4673 | |
| 4674 | pkt->u.raw.signature = ATIO_PROCESSED; |
| 4675 | pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; |
| 4676 | } |
| 4677 | wmb(); |
| 4678 | } |
| 4679 | |
| 4680 | /* Adjust ring index */ |
| 4681 | WRT_REG_DWORD(®->atio_q_out, ha->tgt.atio_ring_index); |
| 4682 | } |
| 4683 | |
| 4684 | void |
| 4685 | qlt_24xx_config_rings(struct scsi_qla_host *vha, device_reg_t __iomem *reg) |
| 4686 | { |
| 4687 | struct qla_hw_data *ha = vha->hw; |
| 4688 | |
| 4689 | /* FIXME: atio_q in/out for ha->mqenable=1..? */ |
| 4690 | if (ha->mqenable) { |
| 4691 | #if 0 |
| 4692 | WRT_REG_DWORD(®->isp25mq.atio_q_in, 0); |
| 4693 | WRT_REG_DWORD(®->isp25mq.atio_q_out, 0); |
| 4694 | RD_REG_DWORD(®->isp25mq.atio_q_out); |
| 4695 | #endif |
| 4696 | } else { |
| 4697 | /* Setup APTIO registers for target mode */ |
| 4698 | WRT_REG_DWORD(®->isp24.atio_q_in, 0); |
| 4699 | WRT_REG_DWORD(®->isp24.atio_q_out, 0); |
| 4700 | RD_REG_DWORD(®->isp24.atio_q_out); |
| 4701 | } |
| 4702 | } |
| 4703 | |
| 4704 | void |
| 4705 | qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) |
| 4706 | { |
| 4707 | struct qla_hw_data *ha = vha->hw; |
| 4708 | |
| 4709 | if (qla_tgt_mode_enabled(vha)) { |
| 4710 | if (!ha->tgt.saved_set) { |
| 4711 | /* We save only once */ |
| 4712 | ha->tgt.saved_exchange_count = nv->exchange_count; |
| 4713 | ha->tgt.saved_firmware_options_1 = |
| 4714 | nv->firmware_options_1; |
| 4715 | ha->tgt.saved_firmware_options_2 = |
| 4716 | nv->firmware_options_2; |
| 4717 | ha->tgt.saved_firmware_options_3 = |
| 4718 | nv->firmware_options_3; |
| 4719 | ha->tgt.saved_set = 1; |
| 4720 | } |
| 4721 | |
| 4722 | nv->exchange_count = __constant_cpu_to_le16(0xFFFF); |
| 4723 | |
| 4724 | /* Enable target mode */ |
| 4725 | nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4); |
| 4726 | |
| 4727 | /* Disable ini mode, if requested */ |
| 4728 | if (!qla_ini_mode_enabled(vha)) |
| 4729 | nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5); |
| 4730 | |
| 4731 | /* Disable Full Login after LIP */ |
| 4732 | nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13); |
| 4733 | /* Enable initial LIP */ |
| 4734 | nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9); |
| 4735 | /* Enable FC tapes support */ |
| 4736 | nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12); |
| 4737 | /* Disable Full Login after LIP */ |
| 4738 | nv->host_p &= __constant_cpu_to_le32(~BIT_10); |
| 4739 | /* Enable target PRLI control */ |
| 4740 | nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14); |
| 4741 | } else { |
| 4742 | if (ha->tgt.saved_set) { |
| 4743 | nv->exchange_count = ha->tgt.saved_exchange_count; |
| 4744 | nv->firmware_options_1 = |
| 4745 | ha->tgt.saved_firmware_options_1; |
| 4746 | nv->firmware_options_2 = |
| 4747 | ha->tgt.saved_firmware_options_2; |
| 4748 | nv->firmware_options_3 = |
| 4749 | ha->tgt.saved_firmware_options_3; |
| 4750 | } |
| 4751 | return; |
| 4752 | } |
| 4753 | |
| 4754 | /* out-of-order frames reassembly */ |
| 4755 | nv->firmware_options_3 |= BIT_6|BIT_9; |
| 4756 | |
| 4757 | if (ha->tgt.enable_class_2) { |
| 4758 | if (vha->flags.init_done) |
| 4759 | fc_host_supported_classes(vha->host) = |
| 4760 | FC_COS_CLASS2 | FC_COS_CLASS3; |
| 4761 | |
| 4762 | nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8); |
| 4763 | } else { |
| 4764 | if (vha->flags.init_done) |
| 4765 | fc_host_supported_classes(vha->host) = FC_COS_CLASS3; |
| 4766 | |
| 4767 | nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8); |
| 4768 | } |
| 4769 | } |
| 4770 | |
| 4771 | void |
| 4772 | qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, |
| 4773 | struct init_cb_24xx *icb) |
| 4774 | { |
| 4775 | struct qla_hw_data *ha = vha->hw; |
| 4776 | |
| 4777 | if (ha->tgt.node_name_set) { |
| 4778 | memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); |
| 4779 | icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14); |
| 4780 | } |
| 4781 | } |
| 4782 | |
| 4783 | int |
| 4784 | qlt_24xx_process_response_error(struct scsi_qla_host *vha, |
| 4785 | struct sts_entry_24xx *pkt) |
| 4786 | { |
| 4787 | switch (pkt->entry_type) { |
| 4788 | case ABTS_RECV_24XX: |
| 4789 | case ABTS_RESP_24XX: |
| 4790 | case CTIO_TYPE7: |
| 4791 | case NOTIFY_ACK_TYPE: |
| 4792 | return 1; |
| 4793 | default: |
| 4794 | return 0; |
| 4795 | } |
| 4796 | } |
| 4797 | |
| 4798 | void |
| 4799 | qlt_modify_vp_config(struct scsi_qla_host *vha, |
| 4800 | struct vp_config_entry_24xx *vpmod) |
| 4801 | { |
| 4802 | if (qla_tgt_mode_enabled(vha)) |
| 4803 | vpmod->options_idx1 &= ~BIT_5; |
| 4804 | /* Disable ini mode, if requested */ |
| 4805 | if (!qla_ini_mode_enabled(vha)) |
| 4806 | vpmod->options_idx1 &= ~BIT_4; |
| 4807 | } |
| 4808 | |
| 4809 | void |
| 4810 | qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) |
| 4811 | { |
| 4812 | if (!QLA_TGT_MODE_ENABLED()) |
| 4813 | return; |
| 4814 | |
| 4815 | mutex_init(&ha->tgt.tgt_mutex); |
| 4816 | mutex_init(&ha->tgt.tgt_host_action_mutex); |
| 4817 | qlt_clear_mode(base_vha); |
| 4818 | } |
| 4819 | |
| 4820 | int |
| 4821 | qlt_mem_alloc(struct qla_hw_data *ha) |
| 4822 | { |
| 4823 | if (!QLA_TGT_MODE_ENABLED()) |
| 4824 | return 0; |
| 4825 | |
| 4826 | ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * |
| 4827 | MAX_MULTI_ID_FABRIC, GFP_KERNEL); |
| 4828 | if (!ha->tgt.tgt_vp_map) |
| 4829 | return -ENOMEM; |
| 4830 | |
| 4831 | ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, |
| 4832 | (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), |
| 4833 | &ha->tgt.atio_dma, GFP_KERNEL); |
| 4834 | if (!ha->tgt.atio_ring) { |
| 4835 | kfree(ha->tgt.tgt_vp_map); |
| 4836 | return -ENOMEM; |
| 4837 | } |
| 4838 | return 0; |
| 4839 | } |
| 4840 | |
| 4841 | void |
| 4842 | qlt_mem_free(struct qla_hw_data *ha) |
| 4843 | { |
| 4844 | if (!QLA_TGT_MODE_ENABLED()) |
| 4845 | return; |
| 4846 | |
| 4847 | if (ha->tgt.atio_ring) { |
| 4848 | dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * |
| 4849 | sizeof(struct atio_from_isp), ha->tgt.atio_ring, |
| 4850 | ha->tgt.atio_dma); |
| 4851 | } |
| 4852 | kfree(ha->tgt.tgt_vp_map); |
| 4853 | } |
| 4854 | |
| 4855 | /* vport_slock to be held by the caller */ |
| 4856 | void |
| 4857 | qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) |
| 4858 | { |
| 4859 | if (!QLA_TGT_MODE_ENABLED()) |
| 4860 | return; |
| 4861 | |
| 4862 | switch (cmd) { |
| 4863 | case SET_VP_IDX: |
| 4864 | vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; |
| 4865 | break; |
| 4866 | case SET_AL_PA: |
| 4867 | vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx; |
| 4868 | break; |
| 4869 | case RESET_VP_IDX: |
| 4870 | vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; |
| 4871 | break; |
| 4872 | case RESET_AL_PA: |
| 4873 | vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0; |
| 4874 | break; |
| 4875 | } |
| 4876 | } |
| 4877 | |
| 4878 | static int __init qlt_parse_ini_mode(void) |
| 4879 | { |
| 4880 | if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) |
| 4881 | ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; |
| 4882 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) |
| 4883 | ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; |
| 4884 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) |
| 4885 | ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; |
| 4886 | else |
| 4887 | return false; |
| 4888 | |
| 4889 | return true; |
| 4890 | } |
| 4891 | |
| 4892 | int __init qlt_init(void) |
| 4893 | { |
| 4894 | int ret; |
| 4895 | |
| 4896 | if (!qlt_parse_ini_mode()) { |
| 4897 | ql_log(ql_log_fatal, NULL, 0xe06b, |
| 4898 | "qlt_parse_ini_mode() failed\n"); |
| 4899 | return -EINVAL; |
| 4900 | } |
| 4901 | |
| 4902 | if (!QLA_TGT_MODE_ENABLED()) |
| 4903 | return 0; |
| 4904 | |
| 4905 | qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep", |
| 4906 | sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0, |
| 4907 | NULL); |
| 4908 | if (!qla_tgt_cmd_cachep) { |
| 4909 | ql_log(ql_log_fatal, NULL, 0xe06c, |
| 4910 | "kmem_cache_create for qla_tgt_cmd_cachep failed\n"); |
| 4911 | return -ENOMEM; |
| 4912 | } |
| 4913 | |
| 4914 | qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", |
| 4915 | sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct |
| 4916 | qla_tgt_mgmt_cmd), 0, NULL); |
| 4917 | if (!qla_tgt_mgmt_cmd_cachep) { |
| 4918 | ql_log(ql_log_fatal, NULL, 0xe06d, |
| 4919 | "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); |
| 4920 | ret = -ENOMEM; |
| 4921 | goto out; |
| 4922 | } |
| 4923 | |
| 4924 | qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, |
| 4925 | mempool_free_slab, qla_tgt_mgmt_cmd_cachep); |
| 4926 | if (!qla_tgt_mgmt_cmd_mempool) { |
| 4927 | ql_log(ql_log_fatal, NULL, 0xe06e, |
| 4928 | "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); |
| 4929 | ret = -ENOMEM; |
| 4930 | goto out_mgmt_cmd_cachep; |
| 4931 | } |
| 4932 | |
| 4933 | qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); |
| 4934 | if (!qla_tgt_wq) { |
| 4935 | ql_log(ql_log_fatal, NULL, 0xe06f, |
| 4936 | "alloc_workqueue for qla_tgt_wq failed\n"); |
| 4937 | ret = -ENOMEM; |
| 4938 | goto out_cmd_mempool; |
| 4939 | } |
| 4940 | /* |
| 4941 | * Return 1 to signal that initiator-mode is being disabled |
| 4942 | */ |
| 4943 | return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; |
| 4944 | |
| 4945 | out_cmd_mempool: |
| 4946 | mempool_destroy(qla_tgt_mgmt_cmd_mempool); |
| 4947 | out_mgmt_cmd_cachep: |
| 4948 | kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); |
| 4949 | out: |
| 4950 | kmem_cache_destroy(qla_tgt_cmd_cachep); |
| 4951 | return ret; |
| 4952 | } |
| 4953 | |
| 4954 | void qlt_exit(void) |
| 4955 | { |
| 4956 | if (!QLA_TGT_MODE_ENABLED()) |
| 4957 | return; |
| 4958 | |
| 4959 | destroy_workqueue(qla_tgt_wq); |
| 4960 | mempool_destroy(qla_tgt_mgmt_cmd_mempool); |
| 4961 | kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); |
| 4962 | kmem_cache_destroy(qla_tgt_cmd_cachep); |
| 4963 | } |