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 static 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 static void 183 qla24xx_configure_vp(scsi_qla_host_t *vha) 184 { 185 struct fc_vport *fc_vport; 186 int ret; 187 188 fc_vport = vha->fc_vport; 189 190 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n", 191 vha->host_no, __func__)); 192 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 193 if (ret != QLA_SUCCESS) { 194 DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving" 195 " of RSCN requests: 0x%x\n", ret)); 196 return; 197 } else { 198 /* Corresponds to SCR enabled */ 199 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 200 } 201 202 vha->flags.online = 1; 203 if (qla24xx_configure_vhba(vha)) 204 return; 205 206 atomic_set(&vha->vp_state, VP_ACTIVE); 207 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 208 } 209 210 void 211 qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb) 212 { 213 int i, vp_idx_matched; 214 scsi_qla_host_t *vha; 215 216 if (ha->parent) 217 return; 218 219 i = find_next_bit((unsigned long *)ha->vp_idx_map, 220 MAX_MULTI_ID_FABRIC + 1, 1); 221 for (;i <= MAX_MULTI_ID_FABRIC; 222 i = find_next_bit((unsigned long *)ha->vp_idx_map, 223 MAX_MULTI_ID_FABRIC + 1, i + 1)) { 224 vp_idx_matched = 0; 225 226 list_for_each_entry(vha, &ha->vp_list, vp_list) { 227 if (i == vha->vp_idx) { 228 vp_idx_matched = 1; 229 break; 230 } 231 } 232 233 if (vp_idx_matched) { 234 switch (mb[0]) { 235 case MBA_LIP_OCCURRED: 236 case MBA_LOOP_UP: 237 case MBA_LOOP_DOWN: 238 case MBA_LIP_RESET: 239 case MBA_POINT_TO_POINT: 240 case MBA_CHG_IN_CONNECTION: 241 case MBA_PORT_UPDATE: 242 case MBA_RSCN_UPDATE: 243 DEBUG15(printk("scsi(%ld)%s: Async_event for" 244 " VP[%d], mb = 0x%x, vha=%p\n", 245 vha->host_no, __func__,i, *mb, vha)); 246 qla2x00_async_event(vha, mb); 247 break; 248 } 249 } 250 } 251 } 252 253 void 254 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 255 { 256 /* 257 * Physical port will do most of the abort and recovery work. We can 258 * just treat it as a loop down 259 */ 260 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 261 atomic_set(&vha->loop_state, LOOP_DOWN); 262 qla2x00_mark_all_devices_lost(vha, 0); 263 } else { 264 if (!atomic_read(&vha->loop_down_timer)) 265 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 266 } 267 268 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n", 269 vha->host_no, vha->vp_idx)); 270 qla24xx_enable_vp(vha); 271 } 272 273 int 274 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 275 { 276 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 277 /* VP acquired. complete port configuration */ 278 qla24xx_configure_vp(vha); 279 return 0; 280 } 281 282 if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags)) 283 qla2x00_vp_abort_isp(vha); 284 285 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 286 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 287 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 288 } 289 290 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 291 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 292 qla2x00_loop_resync(vha); 293 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 294 } 295 } 296 297 return 0; 298 } 299 300 void 301 qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha) 302 { 303 int ret; 304 int i, vp_idx_matched; 305 scsi_qla_host_t *vha; 306 307 if (ha->parent) 308 return; 309 if (list_empty(&ha->vp_list)) 310 return; 311 312 clear_bit(VP_DPC_NEEDED, &ha->dpc_flags); 313 314 i = find_next_bit((unsigned long *)ha->vp_idx_map, 315 MAX_MULTI_ID_FABRIC + 1, 1); 316 for (;i <= MAX_MULTI_ID_FABRIC; 317 i = find_next_bit((unsigned long *)ha->vp_idx_map, 318 MAX_MULTI_ID_FABRIC + 1, i + 1)) { 319 vp_idx_matched = 0; 320 321 list_for_each_entry(vha, &ha->vp_list, vp_list) { 322 if (i == vha->vp_idx) { 323 vp_idx_matched = 1; 324 break; 325 } 326 } 327 328 if (vp_idx_matched) 329 ret = qla2x00_do_dpc_vp(vha); 330 } 331 } 332 333 int 334 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 335 { 336 scsi_qla_host_t *ha = shost_priv(fc_vport->shost); 337 scsi_qla_host_t *vha; 338 uint8_t port_name[WWN_SIZE]; 339 340 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 341 return VPCERR_UNSUPPORTED; 342 343 /* Check up the F/W and H/W support NPIV */ 344 if (!ha->flags.npiv_supported) 345 return VPCERR_UNSUPPORTED; 346 347 /* Check up whether npiv supported switch presented */ 348 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 349 return VPCERR_NO_FABRIC_SUPP; 350 351 /* Check up unique WWPN */ 352 u64_to_wwn(fc_vport->port_name, port_name); 353 vha = qla24xx_find_vhost_by_name(ha, port_name); 354 if (vha) 355 return VPCERR_BAD_WWN; 356 357 /* Check up max-npiv-supports */ 358 if (ha->num_vhosts > ha->max_npiv_vports) { 359 DEBUG15(printk("scsi(%ld): num_vhosts %d is bigger than " 360 "max_npv_vports %d.\n", ha->host_no, 361 (uint16_t) ha->num_vhosts, (int) ha->max_npiv_vports)); 362 return VPCERR_UNSUPPORTED; 363 } 364 return 0; 365 } 366 367 scsi_qla_host_t * 368 qla24xx_create_vhost(struct fc_vport *fc_vport) 369 { 370 scsi_qla_host_t *ha = shost_priv(fc_vport->shost); 371 scsi_qla_host_t *vha; 372 struct Scsi_Host *host; 373 374 host = scsi_host_alloc(&qla24xx_driver_template, 375 sizeof(scsi_qla_host_t)); 376 if (!host) { 377 printk(KERN_WARNING 378 "qla2xxx: scsi_host_alloc() failed for vport\n"); 379 return(NULL); 380 } 381 382 vha = shost_priv(host); 383 384 /* clone the parent hba */ 385 memcpy(vha, ha, sizeof (scsi_qla_host_t)); 386 387 fc_vport->dd_data = vha; 388 389 vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 390 if (!vha->node_name) 391 goto create_vhost_failed_1; 392 393 vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 394 if (!vha->port_name) 395 goto create_vhost_failed_2; 396 397 /* New host info */ 398 u64_to_wwn(fc_vport->node_name, vha->node_name); 399 u64_to_wwn(fc_vport->port_name, vha->port_name); 400 401 vha->host = host; 402 vha->host_no = host->host_no; 403 vha->parent = ha; 404 vha->fc_vport = fc_vport; 405 vha->device_flags = 0; 406 vha->instance = num_hosts; 407 vha->vp_idx = qla24xx_allocate_vp_id(vha); 408 if (vha->vp_idx > ha->max_npiv_vports) { 409 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n", 410 vha->host_no)); 411 goto create_vhost_failed_3; 412 } 413 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 414 415 init_MUTEX(&vha->mbx_cmd_sem); 416 init_MUTEX_LOCKED(&vha->mbx_intr_sem); 417 418 INIT_LIST_HEAD(&vha->list); 419 INIT_LIST_HEAD(&vha->fcports); 420 INIT_LIST_HEAD(&vha->vp_fcports); 421 422 vha->dpc_flags = 0L; 423 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags); 424 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags); 425 426 /* 427 * To fix the issue of processing a parent's RSCN for the vport before 428 * its SCR is complete. 429 */ 430 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 431 atomic_set(&vha->loop_state, LOOP_DOWN); 432 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 433 434 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 435 436 host->can_queue = vha->request_q_length + 128; 437 host->this_id = 255; 438 host->cmd_per_lun = 3; 439 host->max_cmd_len = MAX_CMDSZ; 440 host->max_channel = MAX_BUSES - 1; 441 host->max_lun = MAX_LUNS; 442 host->unique_id = vha->instance; 443 host->max_id = MAX_TARGETS_2200; 444 host->transportt = qla2xxx_transport_vport_template; 445 446 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n", 447 vha->host_no, vha)); 448 449 vha->flags.init_done = 1; 450 num_hosts++; 451 452 down(&ha->vport_sem); 453 set_bit(vha->vp_idx, (unsigned long *)ha->vp_idx_map); 454 ha->cur_vport_count++; 455 up(&ha->vport_sem); 456 457 return vha; 458 459 create_vhost_failed_3: 460 kfree(vha->port_name); 461 462 create_vhost_failed_2: 463 kfree(vha->node_name); 464 465 create_vhost_failed_1: 466 return NULL; 467 } 468