1 /* 2 * QLOGIC LINUX SOFTWARE 3 * 4 * QLogic ISP2x00 device driver for Linux 2.6.x 5 * Copyright (C) 2003-2005 QLogic Corporation 6 * (www.qlogic.com) 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2, or (at your option) any 11 * later version. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 */ 19 #include "qla_def.h" 20 21 #include <linux/version.h> 22 #include <linux/moduleparam.h> 23 #include <linux/vmalloc.h> 24 #include <linux/smp_lock.h> 25 #include <linux/list.h> 26 27 #include <scsi/scsi_tcq.h> 28 #include <scsi/scsicam.h> 29 #include <linux/delay.h> 30 31 void qla2x00_vp_stop_timer(scsi_qla_host_t *); 32 33 void 34 qla2x00_vp_stop_timer(scsi_qla_host_t *vha) 35 { 36 if (vha->parent && vha->timer_active) { 37 del_timer_sync(&vha->timer); 38 vha->timer_active = 0; 39 } 40 } 41 42 uint32_t 43 qla24xx_allocate_vp_id(scsi_qla_host_t *vha) 44 { 45 uint32_t vp_id; 46 scsi_qla_host_t *ha = vha->parent; 47 48 /* Find an empty slot and assign an vp_id */ 49 down(&ha->vport_sem); 50 vp_id = find_first_zero_bit((unsigned long *)ha->vp_idx_map, 51 MAX_MULTI_ID_FABRIC); 52 if (vp_id > MAX_MULTI_ID_FABRIC) { 53 DEBUG15(printk ("vp_id %d is bigger than MAX_MULTI_ID_FABRID\n", 54 vp_id)); 55 up(&ha->vport_sem); 56 return vp_id; 57 } 58 59 set_bit(vp_id, (unsigned long *)ha->vp_idx_map); 60 ha->num_vhosts++; 61 vha->vp_idx = vp_id; 62 list_add_tail(&vha->vp_list, &ha->vp_list); 63 up(&ha->vport_sem); 64 return vp_id; 65 } 66 67 void 68 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) 69 { 70 uint16_t vp_id; 71 scsi_qla_host_t *ha = vha->parent; 72 73 down(&ha->vport_sem); 74 vp_id = vha->vp_idx; 75 ha->num_vhosts--; 76 clear_bit(vp_id, (unsigned long *)ha->vp_idx_map); 77 list_del(&vha->vp_list); 78 up(&ha->vport_sem); 79 } 80 81 scsi_qla_host_t * 82 qla24xx_find_vhost_by_name(scsi_qla_host_t *ha, uint8_t *port_name) 83 { 84 scsi_qla_host_t *vha; 85 86 /* Locate matching device in database. */ 87 list_for_each_entry(vha, &ha->vp_list, vp_list) { 88 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) 89 return vha; 90 } 91 return NULL; 92 } 93 94 /* 95 * qla2x00_mark_vp_devices_dead 96 * Updates fcport state when device goes offline. 97 * 98 * Input: 99 * ha = adapter block pointer. 100 * fcport = port structure pointer. 101 * 102 * Return: 103 * None. 104 * 105 * Context: 106 */ 107 void 108 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 109 { 110 fc_port_t *fcport; 111 scsi_qla_host_t *pha = to_qla_parent(vha); 112 113 list_for_each_entry(fcport, &pha->fcports, list) { 114 if (fcport->vp_idx != vha->vp_idx) 115 continue; 116 117 DEBUG15(printk("scsi(%ld): Marking port dead, " 118 "loop_id=0x%04x :%x\n", 119 vha->host_no, fcport->loop_id, fcport->vp_idx)); 120 121 atomic_set(&fcport->state, FCS_DEVICE_DEAD); 122 qla2x00_mark_device_lost(vha, fcport, 0, 0); 123 } 124 } 125 126 int 127 qla24xx_disable_vp(scsi_qla_host_t *vha) 128 { 129 int ret; 130 131 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 132 atomic_set(&vha->loop_state, LOOP_DOWN); 133 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 134 135 /* Delete all vp's fcports from parent's list */ 136 qla2x00_mark_vp_devices_dead(vha); 137 atomic_set(&vha->vp_state, VP_FAILED); 138 vha->flags.management_server_logged_in = 0; 139 if (ret == QLA_SUCCESS) { 140 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 141 } else { 142 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 143 return -1; 144 } 145 return 0; 146 } 147 148 int 149 qla24xx_enable_vp(scsi_qla_host_t *vha) 150 { 151 int ret; 152 scsi_qla_host_t *ha = vha->parent; 153 154 /* Check if physical ha port is Up */ 155 if (atomic_read(&ha->loop_state) == LOOP_DOWN || 156 atomic_read(&ha->loop_state) == LOOP_DEAD ) { 157 vha->vp_err_state = VP_ERR_PORTDWN; 158 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 159 goto enable_failed; 160 } 161 162 /* Initialize the new vport unless it is a persistent port */ 163 down(&ha->vport_sem); 164 ret = qla24xx_modify_vp_config(vha); 165 up(&ha->vport_sem); 166 167 if (ret != QLA_SUCCESS) { 168 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 169 goto enable_failed; 170 } 171 172 DEBUG15(qla_printk(KERN_INFO, ha, 173 "Virtual port with id: %d - Enabled\n", vha->vp_idx)); 174 return 0; 175 176 enable_failed: 177 DEBUG15(qla_printk(KERN_INFO, ha, 178 "Virtual port with id: %d - Disabled\n", vha->vp_idx)); 179 return 1; 180 } 181 182 /** 183 * qla24xx_modify_vport() - Modifies the virtual fabric port's configuration 184 * @ha: HA context 185 * @vp: pointer to buffer of virtual port parameters. 186 * @ret_code: return error code: 187 * 188 * Returns the virtual port id, or MAX_VSAN_ID, if couldn't create. 189 */ 190 uint32_t 191 qla24xx_modify_vhba(scsi_qla_host_t *ha, vport_params_t *vp, uint32_t *vp_id) 192 { 193 scsi_qla_host_t *vha; 194 195 vha = qla24xx_find_vhost_by_name(ha, vp->port_name); 196 if (!vha) { 197 *vp_id = MAX_NUM_VPORT_LOOP; 198 return VP_RET_CODE_WWPN; 199 } 200 201 if (qla24xx_enable_vp(vha)) { 202 scsi_host_put(vha->host); 203 qla2x00_mem_free(vha); 204 *vp_id = MAX_NUM_VPORT_LOOP; 205 return VP_RET_CODE_RESOURCES; 206 } 207 208 *vp_id = vha->vp_idx; 209 return VP_RET_CODE_OK; 210 } 211 212 void 213 qla24xx_configure_vp(scsi_qla_host_t *vha) 214 { 215 struct fc_vport *fc_vport; 216 int ret; 217 218 fc_vport = vha->fc_vport; 219 220 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n", 221 vha->host_no, __func__)); 222 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 223 if (ret != QLA_SUCCESS) { 224 DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving" 225 " of RSCN requests: 0x%x\n", ret)); 226 return; 227 } else { 228 /* Corresponds to SCR enabled */ 229 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 230 } 231 232 vha->flags.online = 1; 233 if (qla24xx_configure_vhba(vha)) 234 return; 235 236 atomic_set(&vha->vp_state, VP_ACTIVE); 237 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 238 } 239 240 void 241 qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb) 242 { 243 int i, vp_idx_matched; 244 scsi_qla_host_t *vha; 245 246 if (ha->parent) 247 return; 248 249 i = find_next_bit((unsigned long *)ha->vp_idx_map, 250 MAX_MULTI_ID_FABRIC + 1, 1); 251 for (;i <= MAX_MULTI_ID_FABRIC; 252 i = find_next_bit((unsigned long *)ha->vp_idx_map, 253 MAX_MULTI_ID_FABRIC + 1, i + 1)) { 254 vp_idx_matched = 0; 255 256 list_for_each_entry(vha, &ha->vp_list, vp_list) { 257 if (i == vha->vp_idx) { 258 vp_idx_matched = 1; 259 break; 260 } 261 } 262 263 if (vp_idx_matched) { 264 switch (mb[0]) { 265 case MBA_LIP_OCCURRED: 266 case MBA_LOOP_UP: 267 case MBA_LOOP_DOWN: 268 case MBA_LIP_RESET: 269 case MBA_POINT_TO_POINT: 270 case MBA_CHG_IN_CONNECTION: 271 case MBA_PORT_UPDATE: 272 case MBA_RSCN_UPDATE: 273 DEBUG15(printk("scsi(%ld)%s: Async_event for" 274 " VP[%d], mb = 0x%x, vha=%p\n", 275 vha->host_no, __func__,i, *mb, vha)); 276 qla2x00_async_event(vha, mb); 277 break; 278 } 279 } 280 } 281 } 282 283 void 284 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 285 { 286 /* 287 * Physical port will do most of the abort and recovery work. We can 288 * just treat it as a loop down 289 */ 290 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 291 atomic_set(&vha->loop_state, LOOP_DOWN); 292 qla2x00_mark_all_devices_lost(vha, 0); 293 } else { 294 if (!atomic_read(&vha->loop_down_timer)) 295 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 296 } 297 298 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n", 299 vha->host_no, vha->vp_idx)); 300 qla24xx_enable_vp(vha); 301 } 302 303 int 304 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 305 { 306 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 307 /* VP acquired. complete port configuration */ 308 qla24xx_configure_vp(vha); 309 return 0; 310 } 311 312 if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags)) 313 qla2x00_vp_abort_isp(vha); 314 315 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 316 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 317 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 318 } 319 320 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 321 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 322 qla2x00_loop_resync(vha); 323 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 324 } 325 } 326 327 return 0; 328 } 329 330 void 331 qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha) 332 { 333 int ret; 334 int i, vp_idx_matched; 335 scsi_qla_host_t *vha; 336 337 if (ha->parent) 338 return; 339 if (list_empty(&ha->vp_list)) 340 return; 341 342 clear_bit(VP_DPC_NEEDED, &ha->dpc_flags); 343 344 i = find_next_bit((unsigned long *)ha->vp_idx_map, 345 MAX_MULTI_ID_FABRIC + 1, 1); 346 for (;i <= MAX_MULTI_ID_FABRIC; 347 i = find_next_bit((unsigned long *)ha->vp_idx_map, 348 MAX_MULTI_ID_FABRIC + 1, i + 1)) { 349 vp_idx_matched = 0; 350 351 list_for_each_entry(vha, &ha->vp_list, vp_list) { 352 if (i == vha->vp_idx) { 353 vp_idx_matched = 1; 354 break; 355 } 356 } 357 358 if (vp_idx_matched) 359 ret = qla2x00_do_dpc_vp(vha); 360 } 361 } 362 363 int 364 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 365 { 366 scsi_qla_host_t *ha = (scsi_qla_host_t *) fc_vport->shost->hostdata; 367 scsi_qla_host_t *vha; 368 uint8_t port_name[WWN_SIZE]; 369 370 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 371 return VPCERR_UNSUPPORTED; 372 373 /* Check up the F/W and H/W support NPIV */ 374 if (!ha->flags.npiv_supported) 375 return VPCERR_UNSUPPORTED; 376 377 /* Check up whether npiv supported switch presented */ 378 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 379 return VPCERR_NO_FABRIC_SUPP; 380 381 /* Check up unique WWPN */ 382 u64_to_wwn(fc_vport->port_name, port_name); 383 vha = qla24xx_find_vhost_by_name(ha, port_name); 384 if (vha) 385 return VPCERR_BAD_WWN; 386 387 /* Check up max-npiv-supports */ 388 if (ha->num_vhosts > ha->max_npiv_vports) { 389 DEBUG15(printk("scsi(%ld): num_vhosts %d is bigger than " 390 "max_npv_vports %d.\n", ha->host_no, 391 (uint16_t) ha->num_vhosts, (int) ha->max_npiv_vports)); 392 return VPCERR_UNSUPPORTED; 393 } 394 return 0; 395 } 396 397 scsi_qla_host_t * 398 qla24xx_create_vhost(struct fc_vport *fc_vport) 399 { 400 scsi_qla_host_t *ha = (scsi_qla_host_t *) fc_vport->shost->hostdata; 401 scsi_qla_host_t *vha; 402 struct Scsi_Host *host; 403 404 host = scsi_host_alloc(&qla24xx_driver_template, 405 sizeof(scsi_qla_host_t)); 406 if (!host) { 407 printk(KERN_WARNING 408 "qla2xxx: scsi_host_alloc() failed for vport\n"); 409 return(NULL); 410 } 411 412 vha = (scsi_qla_host_t *)host->hostdata; 413 414 /* clone the parent hba */ 415 memcpy(vha, ha, sizeof (scsi_qla_host_t)); 416 417 fc_vport->dd_data = vha; 418 419 vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 420 if (!vha->node_name) 421 goto create_vhost_failed_1; 422 423 vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 424 if (!vha->port_name) 425 goto create_vhost_failed_2; 426 427 /* New host info */ 428 u64_to_wwn(fc_vport->node_name, vha->node_name); 429 u64_to_wwn(fc_vport->port_name, vha->port_name); 430 431 vha->host = host; 432 vha->host_no = host->host_no; 433 vha->parent = ha; 434 vha->fc_vport = fc_vport; 435 vha->device_flags = 0; 436 vha->instance = num_hosts; 437 vha->vp_idx = qla24xx_allocate_vp_id(vha); 438 if (vha->vp_idx > ha->max_npiv_vports) { 439 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n", 440 vha->host_no)); 441 goto create_vhost_failed_3; 442 } 443 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 444 445 init_MUTEX(&vha->mbx_cmd_sem); 446 init_MUTEX_LOCKED(&vha->mbx_intr_sem); 447 448 INIT_LIST_HEAD(&vha->list); 449 INIT_LIST_HEAD(&vha->fcports); 450 INIT_LIST_HEAD(&vha->vp_fcports); 451 452 vha->dpc_flags = 0L; 453 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags); 454 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags); 455 456 /* 457 * To fix the issue of processing a parent's RSCN for the vport before 458 * its SCR is complete. 459 */ 460 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 461 atomic_set(&vha->loop_state, LOOP_DOWN); 462 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 463 464 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 465 466 host->can_queue = vha->request_q_length + 128; 467 host->this_id = 255; 468 host->cmd_per_lun = 3; 469 host->max_cmd_len = MAX_CMDSZ; 470 host->max_channel = MAX_BUSES - 1; 471 host->max_lun = MAX_LUNS; 472 host->unique_id = vha->instance; 473 host->max_id = MAX_TARGETS_2200; 474 host->transportt = qla2xxx_transport_vport_template; 475 476 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n", 477 vha->host_no, vha)); 478 479 vha->flags.init_done = 1; 480 num_hosts++; 481 482 down(&ha->vport_sem); 483 set_bit(vha->vp_idx, (unsigned long *)ha->vp_idx_map); 484 ha->cur_vport_count++; 485 up(&ha->vport_sem); 486 487 return vha; 488 489 create_vhost_failed_3: 490 kfree(vha->port_name); 491 492 create_vhost_failed_2: 493 kfree(vha->node_name); 494 495 create_vhost_failed_1: 496 return NULL; 497 } 498