Seokmann Ju | 2c3dfe3 | 2007-07-05 13:16:51 -0700 | [diff] [blame] | 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 | */ |
Andrew Vasquez | 26ff776 | 2007-09-20 14:07:47 -0700 | [diff] [blame] | 107 | static void |
Seokmann Ju | 2c3dfe3 | 2007-07-05 13:16:51 -0700 | [diff] [blame] | 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 | |
Andrew Vasquez | 26ff776 | 2007-09-20 14:07:47 -0700 | [diff] [blame] | 182 | static void |
Seokmann Ju | 2c3dfe3 | 2007-07-05 13:16:51 -0700 | [diff] [blame] | 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 | { |
Andrew Vasquez | f363b94 | 2007-09-20 14:07:45 -0700 | [diff] [blame] | 336 | scsi_qla_host_t *ha = shost_priv(fc_vport->shost); |
Seokmann Ju | 2c3dfe3 | 2007-07-05 13:16:51 -0700 | [diff] [blame] | 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 | { |
Andrew Vasquez | f363b94 | 2007-09-20 14:07:45 -0700 | [diff] [blame] | 370 | scsi_qla_host_t *ha = shost_priv(fc_vport->shost); |
Seokmann Ju | 2c3dfe3 | 2007-07-05 13:16:51 -0700 | [diff] [blame] | 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 | |
Andrew Vasquez | f363b94 | 2007-09-20 14:07:45 -0700 | [diff] [blame] | 382 | vha = shost_priv(host); |
Seokmann Ju | 2c3dfe3 | 2007-07-05 13:16:51 -0700 | [diff] [blame] | 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 | } |