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 static 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(ha->vp_idx_map, ha->max_npiv_vports + 1); 51 if (vp_id > ha->max_npiv_vports) { 52 DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n", 53 vp_id, ha->max_npiv_vports)); 54 up(&ha->vport_sem); 55 return vp_id; 56 } 57 58 set_bit(vp_id, ha->vp_idx_map); 59 ha->num_vhosts++; 60 vha->vp_idx = vp_id; 61 list_add_tail(&vha->vp_list, &ha->vp_list); 62 up(&ha->vport_sem); 63 return vp_id; 64 } 65 66 void 67 qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) 68 { 69 uint16_t vp_id; 70 scsi_qla_host_t *ha = vha->parent; 71 72 down(&ha->vport_sem); 73 vp_id = vha->vp_idx; 74 ha->num_vhosts--; 75 clear_bit(vp_id, ha->vp_idx_map); 76 list_del(&vha->vp_list); 77 up(&ha->vport_sem); 78 } 79 80 static scsi_qla_host_t * 81 qla24xx_find_vhost_by_name(scsi_qla_host_t *ha, uint8_t *port_name) 82 { 83 scsi_qla_host_t *vha; 84 85 /* Locate matching device in database. */ 86 list_for_each_entry(vha, &ha->vp_list, vp_list) { 87 if (!memcmp(port_name, vha->port_name, WWN_SIZE)) 88 return vha; 89 } 90 return NULL; 91 } 92 93 /* 94 * qla2x00_mark_vp_devices_dead 95 * Updates fcport state when device goes offline. 96 * 97 * Input: 98 * ha = adapter block pointer. 99 * fcport = port structure pointer. 100 * 101 * Return: 102 * None. 103 * 104 * Context: 105 */ 106 static void 107 qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha) 108 { 109 fc_port_t *fcport; 110 scsi_qla_host_t *pha = to_qla_parent(vha); 111 112 list_for_each_entry(fcport, &pha->fcports, list) { 113 if (fcport->vp_idx != vha->vp_idx) 114 continue; 115 116 DEBUG15(printk("scsi(%ld): Marking port dead, " 117 "loop_id=0x%04x :%x\n", 118 vha->host_no, fcport->loop_id, fcport->vp_idx)); 119 120 atomic_set(&fcport->state, FCS_DEVICE_DEAD); 121 qla2x00_mark_device_lost(vha, fcport, 0, 0); 122 } 123 } 124 125 int 126 qla24xx_disable_vp(scsi_qla_host_t *vha) 127 { 128 int ret; 129 130 ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); 131 atomic_set(&vha->loop_state, LOOP_DOWN); 132 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 133 134 /* Delete all vp's fcports from parent's list */ 135 qla2x00_mark_vp_devices_dead(vha); 136 atomic_set(&vha->vp_state, VP_FAILED); 137 vha->flags.management_server_logged_in = 0; 138 if (ret == QLA_SUCCESS) { 139 fc_vport_set_state(vha->fc_vport, FC_VPORT_DISABLED); 140 } else { 141 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 142 return -1; 143 } 144 return 0; 145 } 146 147 int 148 qla24xx_enable_vp(scsi_qla_host_t *vha) 149 { 150 int ret; 151 scsi_qla_host_t *ha = vha->parent; 152 153 /* Check if physical ha port is Up */ 154 if (atomic_read(&ha->loop_state) == LOOP_DOWN || 155 atomic_read(&ha->loop_state) == LOOP_DEAD ) { 156 vha->vp_err_state = VP_ERR_PORTDWN; 157 fc_vport_set_state(vha->fc_vport, FC_VPORT_LINKDOWN); 158 goto enable_failed; 159 } 160 161 /* Initialize the new vport unless it is a persistent port */ 162 down(&ha->vport_sem); 163 ret = qla24xx_modify_vp_config(vha); 164 up(&ha->vport_sem); 165 166 if (ret != QLA_SUCCESS) { 167 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED); 168 goto enable_failed; 169 } 170 171 DEBUG15(qla_printk(KERN_INFO, ha, 172 "Virtual port with id: %d - Enabled\n", vha->vp_idx)); 173 return 0; 174 175 enable_failed: 176 DEBUG15(qla_printk(KERN_INFO, ha, 177 "Virtual port with id: %d - Disabled\n", vha->vp_idx)); 178 return 1; 179 } 180 181 static void 182 qla24xx_configure_vp(scsi_qla_host_t *vha) 183 { 184 struct fc_vport *fc_vport; 185 int ret; 186 187 fc_vport = vha->fc_vport; 188 189 DEBUG15(printk("scsi(%ld): %s: change request #3 for this host.\n", 190 vha->host_no, __func__)); 191 ret = qla2x00_send_change_request(vha, 0x3, vha->vp_idx); 192 if (ret != QLA_SUCCESS) { 193 DEBUG15(qla_printk(KERN_ERR, vha, "Failed to enable receiving" 194 " of RSCN requests: 0x%x\n", ret)); 195 return; 196 } else { 197 /* Corresponds to SCR enabled */ 198 clear_bit(VP_SCR_NEEDED, &vha->vp_flags); 199 } 200 201 vha->flags.online = 1; 202 if (qla24xx_configure_vhba(vha)) 203 return; 204 205 atomic_set(&vha->vp_state, VP_ACTIVE); 206 fc_vport_set_state(fc_vport, FC_VPORT_ACTIVE); 207 } 208 209 void 210 qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb) 211 { 212 int i, vp_idx_matched; 213 scsi_qla_host_t *vha; 214 215 if (ha->parent) 216 return; 217 218 for_each_mapped_vp_idx(ha, i) { 219 vp_idx_matched = 0; 220 221 list_for_each_entry(vha, &ha->vp_list, vp_list) { 222 if (i == vha->vp_idx) { 223 vp_idx_matched = 1; 224 break; 225 } 226 } 227 228 if (vp_idx_matched) { 229 switch (mb[0]) { 230 case MBA_LIP_OCCURRED: 231 case MBA_LOOP_UP: 232 case MBA_LOOP_DOWN: 233 case MBA_LIP_RESET: 234 case MBA_POINT_TO_POINT: 235 case MBA_CHG_IN_CONNECTION: 236 case MBA_PORT_UPDATE: 237 case MBA_RSCN_UPDATE: 238 DEBUG15(printk("scsi(%ld)%s: Async_event for" 239 " VP[%d], mb = 0x%x, vha=%p\n", 240 vha->host_no, __func__,i, *mb, vha)); 241 qla2x00_async_event(vha, mb); 242 break; 243 } 244 } 245 } 246 } 247 248 void 249 qla2x00_vp_abort_isp(scsi_qla_host_t *vha) 250 { 251 /* 252 * Physical port will do most of the abort and recovery work. We can 253 * just treat it as a loop down 254 */ 255 if (atomic_read(&vha->loop_state) != LOOP_DOWN) { 256 atomic_set(&vha->loop_state, LOOP_DOWN); 257 qla2x00_mark_all_devices_lost(vha, 0); 258 } else { 259 if (!atomic_read(&vha->loop_down_timer)) 260 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 261 } 262 263 DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n", 264 vha->host_no, vha->vp_idx)); 265 qla24xx_enable_vp(vha); 266 } 267 268 static int 269 qla2x00_do_dpc_vp(scsi_qla_host_t *vha) 270 { 271 if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { 272 /* VP acquired. complete port configuration */ 273 qla24xx_configure_vp(vha); 274 return 0; 275 } 276 277 if (test_and_clear_bit(ISP_ABORT_NEEDED, &vha->dpc_flags)) 278 qla2x00_vp_abort_isp(vha); 279 280 if (test_and_clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) && 281 (!(test_and_set_bit(RESET_ACTIVE, &vha->dpc_flags)))) { 282 clear_bit(RESET_ACTIVE, &vha->dpc_flags); 283 } 284 285 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) { 286 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags))) { 287 qla2x00_loop_resync(vha); 288 clear_bit(LOOP_RESYNC_ACTIVE, &vha->dpc_flags); 289 } 290 } 291 292 return 0; 293 } 294 295 void 296 qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha) 297 { 298 int ret; 299 int i, vp_idx_matched; 300 scsi_qla_host_t *vha; 301 302 if (ha->parent) 303 return; 304 if (list_empty(&ha->vp_list)) 305 return; 306 307 clear_bit(VP_DPC_NEEDED, &ha->dpc_flags); 308 309 for_each_mapped_vp_idx(ha, i) { 310 vp_idx_matched = 0; 311 312 list_for_each_entry(vha, &ha->vp_list, vp_list) { 313 if (i == vha->vp_idx) { 314 vp_idx_matched = 1; 315 break; 316 } 317 } 318 319 if (vp_idx_matched) 320 ret = qla2x00_do_dpc_vp(vha); 321 } 322 } 323 324 int 325 qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport) 326 { 327 scsi_qla_host_t *ha = shost_priv(fc_vport->shost); 328 scsi_qla_host_t *vha; 329 uint8_t port_name[WWN_SIZE]; 330 331 if (fc_vport->roles != FC_PORT_ROLE_FCP_INITIATOR) 332 return VPCERR_UNSUPPORTED; 333 334 /* Check up the F/W and H/W support NPIV */ 335 if (!ha->flags.npiv_supported) 336 return VPCERR_UNSUPPORTED; 337 338 /* Check up whether npiv supported switch presented */ 339 if (!(ha->switch_cap & FLOGI_MID_SUPPORT)) 340 return VPCERR_NO_FABRIC_SUPP; 341 342 /* Check up unique WWPN */ 343 u64_to_wwn(fc_vport->port_name, port_name); 344 if (!memcmp(port_name, ha->port_name, WWN_SIZE)) 345 return VPCERR_BAD_WWN; 346 vha = qla24xx_find_vhost_by_name(ha, port_name); 347 if (vha) 348 return VPCERR_BAD_WWN; 349 350 /* Check up max-npiv-supports */ 351 if (ha->num_vhosts > ha->max_npiv_vports) { 352 DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than " 353 "max_npv_vports %ud.\n", ha->host_no, 354 ha->num_vhosts, ha->max_npiv_vports)); 355 return VPCERR_UNSUPPORTED; 356 } 357 return 0; 358 } 359 360 scsi_qla_host_t * 361 qla24xx_create_vhost(struct fc_vport *fc_vport) 362 { 363 scsi_qla_host_t *ha = shost_priv(fc_vport->shost); 364 scsi_qla_host_t *vha; 365 struct Scsi_Host *host; 366 367 host = scsi_host_alloc(&qla24xx_driver_template, 368 sizeof(scsi_qla_host_t)); 369 if (!host) { 370 printk(KERN_WARNING 371 "qla2xxx: scsi_host_alloc() failed for vport\n"); 372 return(NULL); 373 } 374 375 vha = shost_priv(host); 376 377 /* clone the parent hba */ 378 memcpy(vha, ha, sizeof (scsi_qla_host_t)); 379 380 fc_vport->dd_data = vha; 381 382 vha->node_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 383 if (!vha->node_name) 384 goto create_vhost_failed_1; 385 386 vha->port_name = kmalloc(WWN_SIZE * sizeof(char), GFP_KERNEL); 387 if (!vha->port_name) 388 goto create_vhost_failed_2; 389 390 /* New host info */ 391 u64_to_wwn(fc_vport->node_name, vha->node_name); 392 u64_to_wwn(fc_vport->port_name, vha->port_name); 393 394 vha->host = host; 395 vha->host_no = host->host_no; 396 vha->parent = ha; 397 vha->fc_vport = fc_vport; 398 vha->device_flags = 0; 399 vha->instance = num_hosts; 400 vha->vp_idx = qla24xx_allocate_vp_id(vha); 401 if (vha->vp_idx > ha->max_npiv_vports) { 402 DEBUG15(printk("scsi(%ld): Couldn't allocate vp_id.\n", 403 vha->host_no)); 404 goto create_vhost_failed_3; 405 } 406 vha->mgmt_svr_loop_id = 10 + vha->vp_idx; 407 408 init_completion(&vha->mbx_cmd_comp); 409 complete(&vha->mbx_cmd_comp); 410 init_completion(&vha->mbx_intr_comp); 411 412 INIT_LIST_HEAD(&vha->list); 413 INIT_LIST_HEAD(&vha->fcports); 414 INIT_LIST_HEAD(&vha->vp_fcports); 415 416 vha->dpc_flags = 0L; 417 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags); 418 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags); 419 420 /* 421 * To fix the issue of processing a parent's RSCN for the vport before 422 * its SCR is complete. 423 */ 424 set_bit(VP_SCR_NEEDED, &vha->vp_flags); 425 atomic_set(&vha->loop_state, LOOP_DOWN); 426 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); 427 428 qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL); 429 430 host->can_queue = vha->request_q_length + 128; 431 host->this_id = 255; 432 host->cmd_per_lun = 3; 433 host->max_cmd_len = MAX_CMDSZ; 434 host->max_channel = MAX_BUSES - 1; 435 host->max_lun = MAX_LUNS; 436 host->unique_id = vha->instance; 437 host->max_id = MAX_TARGETS_2200; 438 host->transportt = qla2xxx_transport_vport_template; 439 440 DEBUG15(printk("DEBUG: detect vport hba %ld at address = %p\n", 441 vha->host_no, vha)); 442 443 vha->flags.init_done = 1; 444 num_hosts++; 445 446 down(&ha->vport_sem); 447 set_bit(vha->vp_idx, ha->vp_idx_map); 448 ha->cur_vport_count++; 449 up(&ha->vport_sem); 450 451 return vha; 452 453 create_vhost_failed_3: 454 kfree(vha->port_name); 455 456 create_vhost_failed_2: 457 kfree(vha->node_name); 458 459 create_vhost_failed_1: 460 return NULL; 461 } 462