1 /* 2 * QLogic Fibre Channel HBA Driver 3 * Copyright (c) 2003-2008 QLogic Corporation 4 * 5 * See LICENSE.qla2xxx for copyright and licensing details. 6 */ 7 #include "qla_def.h" 8 9 #include <linux/moduleparam.h> 10 #include <linux/vmalloc.h> 11 #include <linux/smp_lock.h> 12 #include <linux/list.h> 13 14 #include <scsi/scsi_tcq.h> 15 #include <scsi/scsicam.h> 16 #include <linux/delay.h> 17 18 void 19 qla2x00_vp_stop_timer(scsi_qla_host_t *vha) 20 { 21 if (vha->parent && vha->timer_active) { 22 del_timer_sync(&vha->timer); 23 vha->timer_active = 0; 24 } 25 } 26 27 static uint32_t 28 qla24xx_allocate_vp_id(scsi_qla_host_t *vha) 29 { 30 uint32_t vp_id; 31 scsi_qla_host_t *ha = vha->parent; 32 33 /* Find an empty slot and assign an vp_id */ 34 mutex_lock(&ha->vport_lock); 35 vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1); 36 if (vp_id > ha->max_npiv_vports) { 37 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n", 38 vp_id, ha->max_npiv_vports)); 39 mutex_unlock(&ha->vport_lock); 40 return vp_id; 41 } 42 43 set_bit(vp_id, ha->vp_idx_map); 44 ha->num_vhosts++; 45 ha->cur_vport_count++; 46 vha->vp_idx = vp_id; 47 list_add_tail(&vha->vp_list, &ha->vp_list); 48 mutex_unlock(&ha->vport_lock); 49 return vp_id; 50 } 51 52 void 53 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) 54 { 55 uint16_t vp_id; 56 scsi_qla_host_t *ha = vha->parent; 57 58 mutex_lock(&ha->vport_lock); 59 vp_id = vha->vp_idx; 60 ha->num_vhosts--; 61 ha->cur_vport_count--; 62 clear_bit(vp_id, ha->vp_idx_map); 63 list_del(&vha->vp_list); 64 mutex_unlock(&ha->vport_lock); 65 } 66 67 static scsi_qla_host_t * 68 qla24xx_find_vhost_by_name(scsi_qla_host_t *ha, uint8_t *port_name) 69 { 70 scsi_qla_host_t *vha; 71 72 /* Locate matching device in database. */ 73 list_for_each_entry(vha, &ha->vp_list, vp_list) { 74 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) 75 return vha; 76 } 77 return NULL; 78 } 79 80 /* 81 * qla2x00_mark_vp_devices_dead 82 * Updates fcport state when device goes offline. 83 * 84 * Input: 85 * ha = adapter block pointer. 86 * fcport = port structure pointer. 87 * 88 * Return: 89 * None. 90 * 91 * Context: 92 */ 93 static void 94 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 95 { 96 fc_port_t *fcport; 97 scsi_qla_host_t *pha = to_qla_parent(vha); 98 99 list_for_each_entry(fcport, &pha->fcports, list) { 100 if (fcport->vp_idx != vha->vp_idx) 101 continue; 102 103 DEBUG15(printk("scsi(%ld): Marking port dead, " 104 "loop_id=0x%04x :%x\n", 105 vha->host_no, fcport->loop_id, fcport->vp_idx)); 106 107 qla2x00_mark_device_lost(vha, fcport, 0, 0); 108 atomic_set(&fcport->state, FCS_UNCONFIGURED); 109 } 110 } 111 112 int 113 qla24xx_disable_vp(scsi_qla_host_t *vha) 114 { 115 int ret; 116 117 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 118 atomic_set(&vha->loop_state, LOOP_DOWN); 119 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 120 121 /* Delete all vp's fcports from parent's list */ 122 qla2x00_mark_vp_devices_dead(vha); 123 atomic_set(&vha->vp_state, VP_FAILED); 124 vha->flags.management_server_logged_in = 0; 125 if (ret == QLA_SUCCESS) { 126 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 127 } else { 128 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 129 return -1; 130 } 131 return 0; 132 } 133 134 int 135 qla24xx_enable_vp(scsi_qla_host_t *vha) 136 { 137 int ret; 138 scsi_qla_host_t *ha = vha->parent; 139 140 /* Check if physical ha port is Up */ 141 if (atomic_read(&ha->loop_state) == LOOP_DOWN || 142 atomic_read(&ha->loop_state) == LOOP_DEAD ) { 143 vha->vp_err_state = VP_ERR_PORTDWN; 144 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 145 goto enable_failed; 146 } 147 148 /* Initialize the new vport unless it is a persistent port */ 149 mutex_lock(&ha->vport_lock); 150 ret = qla24xx_modify_vp_config(vha); 151 mutex_unlock(&ha->vport_lock); 152 153 if (ret != QLA_SUCCESS) { 154 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 155 goto enable_failed; 156 } 157 158 DEBUG15(qla_printk(KERN_INFO, ha, 159 "Virtual port with id: %d - Enabled\n", vha->vp_idx)); 160 return 0; 161 162 enable_failed: 163 DEBUG15(qla_printk(KERN_INFO, ha, 164 "Virtual port with id: %d - Disabled\n", vha->vp_idx)); 165 return 1; 166 } 167 168 static void 169 qla24xx_configure_vp(scsi_qla_host_t *vha) 170 { 171 struct fc_vport *fc_vport; 172 int ret; 173 174 fc_vport = vha->fc_vport; 175 176 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n", 177 vha->host_no, __func__)); 178 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 179 if (ret != QLA_SUCCESS) { 180 DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving" 181 " of RSCN requests: 0x%x\n", ret)); 182 return; 183 } else { 184 /* Corresponds to SCR enabled */ 185 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 186 } 187 188 vha->flags.online = 1; 189 if (qla24xx_configure_vhba(vha)) 190 return; 191 192 atomic_set(&vha->vp_state, VP_ACTIVE); 193 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 194 } 195 196 void 197 qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb) 198 { 199 int i, vp_idx_matched; 200 scsi_qla_host_t *vha; 201 202 if (ha->parent) 203 return; 204 205 for_each_mapped_vp_idx(ha, i) { 206 vp_idx_matched = 0; 207 208 list_for_each_entry(vha, &ha->vp_list, vp_list) { 209 if (i == vha->vp_idx) { 210 vp_idx_matched = 1; 211 break; 212 } 213 } 214 215 if (vp_idx_matched) { 216 switch (mb[0]) { 217 case MBA_LIP_OCCURRED: 218 case MBA_LOOP_UP: 219 case MBA_LOOP_DOWN: 220 case MBA_LIP_RESET: 221 case MBA_POINT_TO_POINT: 222 case MBA_CHG_IN_CONNECTION: 223 case MBA_PORT_UPDATE: 224 case MBA_RSCN_UPDATE: 225 DEBUG15(printk("scsi(%ld)%s: Async_event for" 226 " VP[%d], mb = 0x%x, vha=%p\n", 227 vha->host_no, __func__,i, *mb, vha)); 228 qla2x00_async_event(vha, mb); 229 break; 230 } 231 } 232 } 233 } 234 235 void 236 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 237 { 238 /* 239 * Physical port will do most of the abort and recovery work. We can 240 * just treat it as a loop down 241 */ 242 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 243 atomic_set(&vha->loop_state, LOOP_DOWN); 244 qla2x00_mark_all_devices_lost(vha, 0); 245 } else { 246 if (!atomic_read(&vha->loop_down_timer)) 247 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 248 } 249 250 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n", 251 vha->host_no, vha->vp_idx)); 252 qla24xx_enable_vp(vha); 253 } 254 255 static int 256 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 257 { 258 scsi_qla_host_t *ha = vha->parent; 259 260 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 261 /* VP acquired. complete port configuration */ 262 if (atomic_read(&ha->loop_state) == LOOP_READY) { 263 qla24xx_configure_vp(vha); 264 } else { 265 set_bit(VP_IDX_ACQUIRED, &vha->vp_flags); 266 set_bit(VP_DPC_NEEDED, &ha->dpc_flags); 267 } 268 269 return 0; 270 } 271 272 if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags)) 273 qla2x00_vp_abort_isp(vha); 274 275 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 276 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 277 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 278 } 279 280 if (atomic_read(&vha->vp_state) == VP_ACTIVE && 281 test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 282 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 283 qla2x00_loop_resync(vha); 284 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 285 } 286 } 287 288 return 0; 289 } 290 291 void 292 qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha) 293 { 294 int ret; 295 int i, vp_idx_matched; 296 scsi_qla_host_t *vha; 297 298 if (ha->parent) 299 return; 300 if (list_empty(&ha->vp_list)) 301 return; 302 303 clear_bit(VP_DPC_NEEDED, &ha->dpc_flags); 304 305 for_each_mapped_vp_idx(ha, i) { 306 vp_idx_matched = 0; 307 308 list_for_each_entry(vha, &ha->vp_list, vp_list) { 309 if (i == vha->vp_idx) { 310 vp_idx_matched = 1; 311 break; 312 } 313 } 314 315 if (vp_idx_matched) 316 ret = qla2x00_do_dpc_vp(vha); 317 } 318 } 319 320 int 321 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 322 { 323 scsi_qla_host_t *ha = shost_priv(fc_vport->shost); 324 scsi_qla_host_t *vha; 325 uint8_t port_name[WWN_SIZE]; 326 327 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 328 return VPCERR_UNSUPPORTED; 329 330 /* Check up the F/W and H/W support NPIV */ 331 if (!ha->flags.npiv_supported) 332 return VPCERR_UNSUPPORTED; 333 334 /* Check up whether npiv supported switch presented */ 335 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 336 return VPCERR_NO_FABRIC_SUPP; 337 338 /* Check up unique WWPN */ 339 u64_to_wwn(fc_vport->port_name, port_name); 340 if (!memcmp(port_name, ha->port_name, WWN_SIZE)) 341 return VPCERR_BAD_WWN; 342 vha = qla24xx_find_vhost_by_name(ha, port_name); 343 if (vha) 344 return VPCERR_BAD_WWN; 345 346 /* Check up max-npiv-supports */ 347 if (ha->num_vhosts > ha->max_npiv_vports) { 348 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than " 349 "max_npv_vports %ud.\n", ha->host_no, 350 ha->num_vhosts, ha->max_npiv_vports)); 351 return VPCERR_UNSUPPORTED; 352 } 353 return 0; 354 } 355 356 scsi_qla_host_t * 357 qla24xx_create_vhost(struct fc_vport *fc_vport) 358 { 359 scsi_qla_host_t *ha = shost_priv(fc_vport->shost); 360 scsi_qla_host_t *vha; 361 struct Scsi_Host *host; 362 363 host = scsi_host_alloc(&qla24xx_driver_template, 364 sizeof(scsi_qla_host_t)); 365 if (!host) { 366 printk(KERN_WARNING 367 "qla2xxx: scsi_host_alloc() failed for vport\n"); 368 return(NULL); 369 } 370 371 vha = shost_priv(host); 372 373 /* clone the parent hba */ 374 memcpy(vha, ha, sizeof (scsi_qla_host_t)); 375 376 fc_vport->dd_data = vha; 377 378 vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 379 if (!vha->node_name) 380 goto create_vhost_failed_1; 381 382 vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 383 if (!vha->port_name) 384 goto create_vhost_failed_2; 385 386 /* New host info */ 387 u64_to_wwn(fc_vport->node_name, vha->node_name); 388 u64_to_wwn(fc_vport->port_name, vha->port_name); 389 390 vha->host = host; 391 vha->host_no = host->host_no; 392 vha->parent = ha; 393 vha->fc_vport = fc_vport; 394 vha->device_flags = 0; 395 vha->vp_idx = qla24xx_allocate_vp_id(vha); 396 if (vha->vp_idx > ha->max_npiv_vports) { 397 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n", 398 vha->host_no)); 399 goto create_vhost_failed_3; 400 } 401 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 402 403 init_completion(&vha->mbx_cmd_comp); 404 complete(&vha->mbx_cmd_comp); 405 init_completion(&vha->mbx_intr_comp); 406 407 INIT_LIST_HEAD(&vha->list); 408 INIT_LIST_HEAD(&vha->fcports); 409 INIT_LIST_HEAD(&vha->vp_fcports); 410 INIT_LIST_HEAD(&vha->work_list); 411 412 vha->dpc_flags = 0L; 413 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags); 414 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags); 415 416 /* 417 * To fix the issue of processing a parent's RSCN for the vport before 418 * its SCR is complete. 419 */ 420 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 421 atomic_set(&vha->loop_state, LOOP_DOWN); 422 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 423 424 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 425 426 host->can_queue = vha->request_q_length + 128; 427 host->this_id = 255; 428 host->cmd_per_lun = 3; 429 host->max_cmd_len = MAX_CMDSZ; 430 host->max_channel = MAX_BUSES - 1; 431 host->max_lun = MAX_LUNS; 432 host->unique_id = host->host_no; 433 host->max_id = MAX_TARGETS_2200; 434 host->transportt = qla2xxx_transport_vport_template; 435 436 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n", 437 vha->host_no, vha)); 438 439 vha->flags.init_done = 1; 440 441 return vha; 442 443 create_vhost_failed_3: 444 kfree(vha->port_name); 445 446 create_vhost_failed_2: 447 kfree(vha->node_name); 448 449 create_vhost_failed_1: 450 return NULL; 451 } 452