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/delay.h> 10 #include <scsi/scsi_tcq.h> 11 12 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t); 13 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t); 14 static void qla2x00_status_entry(scsi_qla_host_t *, void *); 15 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *); 16 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *); 17 18 /** 19 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200. 20 * @irq: 21 * @dev_id: SCSI driver HA context 22 * 23 * Called by system whenever the host adapter generates an interrupt. 24 * 25 * Returns handled flag. 26 */ 27 irqreturn_t 28 qla2100_intr_handler(int irq, void *dev_id) 29 { 30 scsi_qla_host_t *ha; 31 struct device_reg_2xxx __iomem *reg; 32 int status; 33 unsigned long iter; 34 uint16_t hccr; 35 uint16_t mb[4]; 36 37 ha = (scsi_qla_host_t *) dev_id; 38 if (!ha) { 39 printk(KERN_INFO 40 "%s(): NULL host pointer\n", __func__); 41 return (IRQ_NONE); 42 } 43 44 reg = &ha->iobase->isp; 45 status = 0; 46 47 spin_lock(&ha->hardware_lock); 48 for (iter = 50; iter--; ) { 49 hccr = RD_REG_WORD(®->hccr); 50 if (hccr & HCCR_RISC_PAUSE) { 51 if (pci_channel_offline(ha->pdev)) 52 break; 53 54 /* 55 * Issue a "HARD" reset in order for the RISC interrupt 56 * bit to be cleared. Schedule a big hammmer to get 57 * out of the RISC PAUSED state. 58 */ 59 WRT_REG_WORD(®->hccr, HCCR_RESET_RISC); 60 RD_REG_WORD(®->hccr); 61 62 ha->isp_ops->fw_dump(ha, 1); 63 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 64 break; 65 } else if ((RD_REG_WORD(®->istatus) & ISR_RISC_INT) == 0) 66 break; 67 68 if (RD_REG_WORD(®->semaphore) & BIT_0) { 69 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); 70 RD_REG_WORD(®->hccr); 71 72 /* Get mailbox data. */ 73 mb[0] = RD_MAILBOX_REG(ha, reg, 0); 74 if (mb[0] > 0x3fff && mb[0] < 0x8000) { 75 qla2x00_mbx_completion(ha, mb[0]); 76 status |= MBX_INTERRUPT; 77 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) { 78 mb[1] = RD_MAILBOX_REG(ha, reg, 1); 79 mb[2] = RD_MAILBOX_REG(ha, reg, 2); 80 mb[3] = RD_MAILBOX_REG(ha, reg, 3); 81 qla2x00_async_event(ha, mb); 82 } else { 83 /*EMPTY*/ 84 DEBUG2(printk("scsi(%ld): Unrecognized " 85 "interrupt type (%d).\n", 86 ha->host_no, mb[0])); 87 } 88 /* Release mailbox registers. */ 89 WRT_REG_WORD(®->semaphore, 0); 90 RD_REG_WORD(®->semaphore); 91 } else { 92 qla2x00_process_response_queue(ha); 93 94 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); 95 RD_REG_WORD(®->hccr); 96 } 97 } 98 spin_unlock(&ha->hardware_lock); 99 100 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && 101 (status & MBX_INTERRUPT) && ha->flags.mbox_int) { 102 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); 103 complete(&ha->mbx_intr_comp); 104 } 105 106 return (IRQ_HANDLED); 107 } 108 109 /** 110 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. 111 * @irq: 112 * @dev_id: SCSI driver HA context 113 * 114 * Called by system whenever the host adapter generates an interrupt. 115 * 116 * Returns handled flag. 117 */ 118 irqreturn_t 119 qla2300_intr_handler(int irq, void *dev_id) 120 { 121 scsi_qla_host_t *ha; 122 struct device_reg_2xxx __iomem *reg; 123 int status; 124 unsigned long iter; 125 uint32_t stat; 126 uint16_t hccr; 127 uint16_t mb[4]; 128 129 ha = (scsi_qla_host_t *) dev_id; 130 if (!ha) { 131 printk(KERN_INFO 132 "%s(): NULL host pointer\n", __func__); 133 return (IRQ_NONE); 134 } 135 136 reg = &ha->iobase->isp; 137 status = 0; 138 139 spin_lock(&ha->hardware_lock); 140 for (iter = 50; iter--; ) { 141 stat = RD_REG_DWORD(®->u.isp2300.host_status); 142 if (stat & HSR_RISC_PAUSED) { 143 if (pci_channel_offline(ha->pdev)) 144 break; 145 146 hccr = RD_REG_WORD(®->hccr); 147 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8)) 148 qla_printk(KERN_INFO, ha, "Parity error -- " 149 "HCCR=%x, Dumping firmware!\n", hccr); 150 else 151 qla_printk(KERN_INFO, ha, "RISC paused -- " 152 "HCCR=%x, Dumping firmware!\n", hccr); 153 154 /* 155 * Issue a "HARD" reset in order for the RISC 156 * interrupt bit to be cleared. Schedule a big 157 * hammmer to get out of the RISC PAUSED state. 158 */ 159 WRT_REG_WORD(®->hccr, HCCR_RESET_RISC); 160 RD_REG_WORD(®->hccr); 161 162 ha->isp_ops->fw_dump(ha, 1); 163 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 164 break; 165 } else if ((stat & HSR_RISC_INT) == 0) 166 break; 167 168 switch (stat & 0xff) { 169 case 0x1: 170 case 0x2: 171 case 0x10: 172 case 0x11: 173 qla2x00_mbx_completion(ha, MSW(stat)); 174 status |= MBX_INTERRUPT; 175 176 /* Release mailbox registers. */ 177 WRT_REG_WORD(®->semaphore, 0); 178 break; 179 case 0x12: 180 mb[0] = MSW(stat); 181 mb[1] = RD_MAILBOX_REG(ha, reg, 1); 182 mb[2] = RD_MAILBOX_REG(ha, reg, 2); 183 mb[3] = RD_MAILBOX_REG(ha, reg, 3); 184 qla2x00_async_event(ha, mb); 185 break; 186 case 0x13: 187 qla2x00_process_response_queue(ha); 188 break; 189 case 0x15: 190 mb[0] = MBA_CMPLT_1_16BIT; 191 mb[1] = MSW(stat); 192 qla2x00_async_event(ha, mb); 193 break; 194 case 0x16: 195 mb[0] = MBA_SCSI_COMPLETION; 196 mb[1] = MSW(stat); 197 mb[2] = RD_MAILBOX_REG(ha, reg, 2); 198 qla2x00_async_event(ha, mb); 199 break; 200 default: 201 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " 202 "(%d).\n", 203 ha->host_no, stat & 0xff)); 204 break; 205 } 206 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT); 207 RD_REG_WORD_RELAXED(®->hccr); 208 } 209 spin_unlock(&ha->hardware_lock); 210 211 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && 212 (status & MBX_INTERRUPT) && ha->flags.mbox_int) { 213 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); 214 complete(&ha->mbx_intr_comp); 215 } 216 217 return (IRQ_HANDLED); 218 } 219 220 /** 221 * qla2x00_mbx_completion() - Process mailbox command completions. 222 * @ha: SCSI driver HA context 223 * @mb0: Mailbox0 register 224 */ 225 static void 226 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0) 227 { 228 uint16_t cnt; 229 uint16_t __iomem *wptr; 230 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; 231 232 /* Load return mailbox registers. */ 233 ha->flags.mbox_int = 1; 234 ha->mailbox_out[0] = mb0; 235 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1); 236 237 for (cnt = 1; cnt < ha->mbx_count; cnt++) { 238 if (IS_QLA2200(ha) && cnt == 8) 239 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8); 240 if (cnt == 4 || cnt == 5) 241 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr); 242 else 243 ha->mailbox_out[cnt] = RD_REG_WORD(wptr); 244 245 wptr++; 246 } 247 248 if (ha->mcp) { 249 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n", 250 __func__, ha->host_no, ha->mcp->mb[0])); 251 } else { 252 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n", 253 __func__, ha->host_no)); 254 } 255 } 256 257 /** 258 * qla2x00_async_event() - Process aynchronous events. 259 * @ha: SCSI driver HA context 260 * @mb: Mailbox registers (0 - 3) 261 */ 262 void 263 qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb) 264 { 265 #define LS_UNKNOWN 2 266 static char *link_speeds[5] = { "1", "2", "?", "4", "8" }; 267 char *link_speed; 268 uint16_t handle_cnt; 269 uint16_t cnt; 270 uint32_t handles[5]; 271 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; 272 uint32_t rscn_entry, host_pid; 273 uint8_t rscn_queue_index; 274 unsigned long flags; 275 276 /* Setup to process RIO completion. */ 277 handle_cnt = 0; 278 switch (mb[0]) { 279 case MBA_SCSI_COMPLETION: 280 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1])); 281 handle_cnt = 1; 282 break; 283 case MBA_CMPLT_1_16BIT: 284 handles[0] = mb[1]; 285 handle_cnt = 1; 286 mb[0] = MBA_SCSI_COMPLETION; 287 break; 288 case MBA_CMPLT_2_16BIT: 289 handles[0] = mb[1]; 290 handles[1] = mb[2]; 291 handle_cnt = 2; 292 mb[0] = MBA_SCSI_COMPLETION; 293 break; 294 case MBA_CMPLT_3_16BIT: 295 handles[0] = mb[1]; 296 handles[1] = mb[2]; 297 handles[2] = mb[3]; 298 handle_cnt = 3; 299 mb[0] = MBA_SCSI_COMPLETION; 300 break; 301 case MBA_CMPLT_4_16BIT: 302 handles[0] = mb[1]; 303 handles[1] = mb[2]; 304 handles[2] = mb[3]; 305 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6); 306 handle_cnt = 4; 307 mb[0] = MBA_SCSI_COMPLETION; 308 break; 309 case MBA_CMPLT_5_16BIT: 310 handles[0] = mb[1]; 311 handles[1] = mb[2]; 312 handles[2] = mb[3]; 313 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6); 314 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7); 315 handle_cnt = 5; 316 mb[0] = MBA_SCSI_COMPLETION; 317 break; 318 case MBA_CMPLT_2_32BIT: 319 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1])); 320 handles[1] = le32_to_cpu( 321 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) | 322 RD_MAILBOX_REG(ha, reg, 6)); 323 handle_cnt = 2; 324 mb[0] = MBA_SCSI_COMPLETION; 325 break; 326 default: 327 break; 328 } 329 330 switch (mb[0]) { 331 case MBA_SCSI_COMPLETION: /* Fast Post */ 332 if (!ha->flags.online) 333 break; 334 335 for (cnt = 0; cnt < handle_cnt; cnt++) 336 qla2x00_process_completed_request(ha, handles[cnt]); 337 break; 338 339 case MBA_RESET: /* Reset */ 340 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no)); 341 342 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); 343 break; 344 345 case MBA_SYSTEM_ERR: /* System Error */ 346 qla_printk(KERN_INFO, ha, 347 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n", 348 mb[1], mb[2], mb[3]); 349 350 qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]); 351 ha->isp_ops->fw_dump(ha, 1); 352 353 if (IS_FWI2_CAPABLE(ha)) { 354 if (mb[1] == 0 && mb[2] == 0) { 355 qla_printk(KERN_ERR, ha, 356 "Unrecoverable Hardware Error: adapter " 357 "marked OFFLINE!\n"); 358 ha->flags.online = 0; 359 } else 360 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 361 } else if (mb[1] == 0) { 362 qla_printk(KERN_INFO, ha, 363 "Unrecoverable Hardware Error: adapter marked " 364 "OFFLINE!\n"); 365 ha->flags.online = 0; 366 } else 367 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 368 break; 369 370 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ 371 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n", 372 ha->host_no)); 373 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n"); 374 375 qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]); 376 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 377 break; 378 379 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ 380 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n", 381 ha->host_no)); 382 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n"); 383 384 qla2x00_post_hwe_work(ha, mb[0], mb[1], mb[2], mb[3]); 385 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 386 break; 387 388 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */ 389 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n", 390 ha->host_no)); 391 break; 392 393 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */ 394 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no, 395 mb[1])); 396 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]); 397 398 if (atomic_read(&ha->loop_state) != LOOP_DOWN) { 399 atomic_set(&ha->loop_state, LOOP_DOWN); 400 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); 401 qla2x00_mark_all_devices_lost(ha, 1); 402 } 403 404 if (ha->parent) { 405 atomic_set(&ha->vp_state, VP_FAILED); 406 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); 407 } 408 409 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); 410 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags); 411 412 ha->flags.management_server_logged_in = 0; 413 qla2x00_post_aen_work(ha, FCH_EVT_LIP, mb[1]); 414 break; 415 416 case MBA_LOOP_UP: /* Loop Up Event */ 417 if (IS_QLA2100(ha) || IS_QLA2200(ha)) { 418 link_speed = link_speeds[0]; 419 ha->link_data_rate = PORT_SPEED_1GB; 420 } else { 421 link_speed = link_speeds[LS_UNKNOWN]; 422 if (mb[1] < 5) 423 link_speed = link_speeds[mb[1]]; 424 ha->link_data_rate = mb[1]; 425 } 426 427 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n", 428 ha->host_no, link_speed)); 429 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n", 430 link_speed); 431 432 ha->flags.management_server_logged_in = 0; 433 qla2x00_post_aen_work(ha, FCH_EVT_LINKUP, ha->link_data_rate); 434 break; 435 436 case MBA_LOOP_DOWN: /* Loop Down Event */ 437 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN " 438 "(%x %x %x).\n", ha->host_no, mb[1], mb[2], mb[3])); 439 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n", 440 mb[1], mb[2], mb[3]); 441 442 if (atomic_read(&ha->loop_state) != LOOP_DOWN) { 443 atomic_set(&ha->loop_state, LOOP_DOWN); 444 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); 445 ha->device_flags |= DFLG_NO_CABLE; 446 qla2x00_mark_all_devices_lost(ha, 1); 447 } 448 449 if (ha->parent) { 450 atomic_set(&ha->vp_state, VP_FAILED); 451 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); 452 } 453 454 ha->flags.management_server_logged_in = 0; 455 ha->link_data_rate = PORT_SPEED_UNKNOWN; 456 qla2x00_post_aen_work(ha, FCH_EVT_LINKDOWN, 0); 457 break; 458 459 case MBA_LIP_RESET: /* LIP reset occurred */ 460 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n", 461 ha->host_no, mb[1])); 462 qla_printk(KERN_INFO, ha, 463 "LIP reset occured (%x).\n", mb[1]); 464 465 if (atomic_read(&ha->loop_state) != LOOP_DOWN) { 466 atomic_set(&ha->loop_state, LOOP_DOWN); 467 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME); 468 qla2x00_mark_all_devices_lost(ha, 1); 469 } 470 471 if (ha->parent) { 472 atomic_set(&ha->vp_state, VP_FAILED); 473 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); 474 } 475 476 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); 477 478 ha->operating_mode = LOOP; 479 ha->flags.management_server_logged_in = 0; 480 qla2x00_post_aen_work(ha, FCH_EVT_LIPRESET, mb[1]); 481 break; 482 483 case MBA_POINT_TO_POINT: /* Point-to-Point */ 484 if (IS_QLA2100(ha)) 485 break; 486 487 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n", 488 ha->host_no)); 489 490 /* 491 * Until there's a transition from loop down to loop up, treat 492 * this as loop down only. 493 */ 494 if (atomic_read(&ha->loop_state) != LOOP_DOWN) { 495 atomic_set(&ha->loop_state, LOOP_DOWN); 496 if (!atomic_read(&ha->loop_down_timer)) 497 atomic_set(&ha->loop_down_timer, 498 LOOP_DOWN_TIME); 499 qla2x00_mark_all_devices_lost(ha, 1); 500 } 501 502 if (ha->parent) { 503 atomic_set(&ha->vp_state, VP_FAILED); 504 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); 505 } 506 507 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) { 508 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags); 509 } 510 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags); 511 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags); 512 513 ha->flags.gpsc_supported = 1; 514 ha->flags.management_server_logged_in = 0; 515 break; 516 517 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */ 518 if (IS_QLA2100(ha)) 519 break; 520 521 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection " 522 "received.\n", 523 ha->host_no)); 524 qla_printk(KERN_INFO, ha, 525 "Configuration change detected: value=%x.\n", mb[1]); 526 527 if (atomic_read(&ha->loop_state) != LOOP_DOWN) { 528 atomic_set(&ha->loop_state, LOOP_DOWN); 529 if (!atomic_read(&ha->loop_down_timer)) 530 atomic_set(&ha->loop_down_timer, 531 LOOP_DOWN_TIME); 532 qla2x00_mark_all_devices_lost(ha, 1); 533 } 534 535 if (ha->parent) { 536 atomic_set(&ha->vp_state, VP_FAILED); 537 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED); 538 } 539 540 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); 541 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); 542 break; 543 544 case MBA_PORT_UPDATE: /* Port database update */ 545 /* 546 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET 547 * event etc. earlier indicating loop is down) then process 548 * it. Otherwise ignore it and Wait for RSCN to come in. 549 */ 550 atomic_set(&ha->loop_down_timer, 0); 551 if (atomic_read(&ha->loop_state) != LOOP_DOWN && 552 atomic_read(&ha->loop_state) != LOOP_DEAD) { 553 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE " 554 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1], 555 mb[2], mb[3])); 556 break; 557 } 558 559 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n", 560 ha->host_no)); 561 DEBUG(printk(KERN_INFO 562 "scsi(%ld): Port database changed %04x %04x %04x.\n", 563 ha->host_no, mb[1], mb[2], mb[3])); 564 565 /* 566 * Mark all devices as missing so we will login again. 567 */ 568 atomic_set(&ha->loop_state, LOOP_UP); 569 570 qla2x00_mark_all_devices_lost(ha, 1); 571 572 ha->flags.rscn_queue_overflow = 1; 573 574 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); 575 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags); 576 break; 577 578 case MBA_RSCN_UPDATE: /* State Change Registration */ 579 /* Check if the Vport has issued a SCR */ 580 if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags)) 581 break; 582 /* Only handle SCNs for our Vport index. */ 583 if (ha->parent && ha->vp_idx != (mb[3] & 0xff)) 584 break; 585 586 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n", 587 ha->host_no)); 588 DEBUG(printk(KERN_INFO 589 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n", 590 ha->host_no, mb[1], mb[2], mb[3])); 591 592 rscn_entry = (mb[1] << 16) | mb[2]; 593 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) | 594 ha->d_id.b.al_pa; 595 if (rscn_entry == host_pid) { 596 DEBUG(printk(KERN_INFO 597 "scsi(%ld): Ignoring RSCN update to local host " 598 "port ID (%06x)\n", 599 ha->host_no, host_pid)); 600 break; 601 } 602 603 rscn_queue_index = ha->rscn_in_ptr + 1; 604 if (rscn_queue_index == MAX_RSCN_COUNT) 605 rscn_queue_index = 0; 606 if (rscn_queue_index != ha->rscn_out_ptr) { 607 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry; 608 ha->rscn_in_ptr = rscn_queue_index; 609 } else { 610 ha->flags.rscn_queue_overflow = 1; 611 } 612 613 atomic_set(&ha->loop_state, LOOP_UPDATE); 614 atomic_set(&ha->loop_down_timer, 0); 615 ha->flags.management_server_logged_in = 0; 616 617 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags); 618 set_bit(RSCN_UPDATE, &ha->dpc_flags); 619 qla2x00_post_aen_work(ha, FCH_EVT_RSCN, rscn_entry); 620 break; 621 622 /* case MBA_RIO_RESPONSE: */ 623 case MBA_ZIO_RESPONSE: 624 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n", 625 ha->host_no)); 626 DEBUG(printk(KERN_INFO 627 "scsi(%ld): [R|Z]IO update completion.\n", 628 ha->host_no)); 629 630 if (IS_FWI2_CAPABLE(ha)) 631 qla24xx_process_response_queue(ha); 632 else 633 qla2x00_process_response_queue(ha); 634 break; 635 636 case MBA_DISCARD_RND_FRAME: 637 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x " 638 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3])); 639 break; 640 641 case MBA_TRACE_NOTIFICATION: 642 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n", 643 ha->host_no, mb[1], mb[2])); 644 break; 645 646 case MBA_ISP84XX_ALERT: 647 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- " 648 "%04x %04x %04x\n", ha->host_no, mb[1], mb[2], mb[3])); 649 650 spin_lock_irqsave(&ha->cs84xx->access_lock, flags); 651 switch (mb[1]) { 652 case A84_PANIC_RECOVERY: 653 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery " 654 "%04x %04x\n", mb[2], mb[3]); 655 break; 656 case A84_OP_LOGIN_COMPLETE: 657 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2]; 658 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:" 659 "firmware version %x\n", ha->cs84xx->op_fw_version)); 660 break; 661 case A84_DIAG_LOGIN_COMPLETE: 662 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2]; 663 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:" 664 "diagnostic firmware version %x\n", 665 ha->cs84xx->diag_fw_version)); 666 break; 667 case A84_GOLD_LOGIN_COMPLETE: 668 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2]; 669 ha->cs84xx->fw_update = 1; 670 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold " 671 "firmware version %x\n", 672 ha->cs84xx->gold_fw_version)); 673 break; 674 default: 675 qla_printk(KERN_ERR, ha, 676 "Alert 84xx: Invalid Alert %04x %04x %04x\n", 677 mb[1], mb[2], mb[3]); 678 } 679 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags); 680 break; 681 } 682 683 if (!ha->parent && ha->num_vhosts) 684 qla2x00_alert_all_vps(ha, mb); 685 } 686 687 static void 688 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data) 689 { 690 fc_port_t *fcport = data; 691 692 if (fcport->ha->max_q_depth <= sdev->queue_depth) 693 return; 694 695 if (sdev->ordered_tags) 696 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, 697 sdev->queue_depth + 1); 698 else 699 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 700 sdev->queue_depth + 1); 701 702 fcport->last_ramp_up = jiffies; 703 704 DEBUG2(qla_printk(KERN_INFO, fcport->ha, 705 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n", 706 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun, 707 sdev->queue_depth)); 708 } 709 710 static void 711 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data) 712 { 713 fc_port_t *fcport = data; 714 715 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1)) 716 return; 717 718 DEBUG2(qla_printk(KERN_INFO, fcport->ha, 719 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n", 720 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun, 721 sdev->queue_depth)); 722 } 723 724 static inline void 725 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp) 726 { 727 fc_port_t *fcport; 728 struct scsi_device *sdev; 729 730 sdev = sp->cmd->device; 731 if (sdev->queue_depth >= ha->max_q_depth) 732 return; 733 734 fcport = sp->fcport; 735 if (time_before(jiffies, 736 fcport->last_ramp_up + ql2xqfullrampup * HZ)) 737 return; 738 if (time_before(jiffies, 739 fcport->last_queue_full + ql2xqfullrampup * HZ)) 740 return; 741 742 starget_for_each_device(sdev->sdev_target, fcport, 743 qla2x00_adjust_sdev_qdepth_up); 744 } 745 746 /** 747 * qla2x00_process_completed_request() - Process a Fast Post response. 748 * @ha: SCSI driver HA context 749 * @index: SRB index 750 */ 751 static void 752 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index) 753 { 754 srb_t *sp; 755 756 /* Validate handle. */ 757 if (index >= MAX_OUTSTANDING_COMMANDS) { 758 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n", 759 ha->host_no, index)); 760 qla_printk(KERN_WARNING, ha, 761 "Invalid SCSI completion handle %d.\n", index); 762 763 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 764 return; 765 } 766 767 sp = ha->outstanding_cmds[index]; 768 if (sp) { 769 /* Free outstanding command slot. */ 770 ha->outstanding_cmds[index] = NULL; 771 772 CMD_COMPL_STATUS(sp->cmd) = 0L; 773 CMD_SCSI_STATUS(sp->cmd) = 0L; 774 775 /* Save ISP completion status */ 776 sp->cmd->result = DID_OK << 16; 777 778 qla2x00_ramp_up_queue_depth(ha, sp); 779 qla2x00_sp_compl(ha, sp); 780 } else { 781 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n", 782 ha->host_no)); 783 qla_printk(KERN_WARNING, ha, 784 "Invalid ISP SCSI completion handle\n"); 785 786 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 787 } 788 } 789 790 /** 791 * qla2x00_process_response_queue() - Process response queue entries. 792 * @ha: SCSI driver HA context 793 */ 794 void 795 qla2x00_process_response_queue(struct scsi_qla_host *ha) 796 { 797 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; 798 sts_entry_t *pkt; 799 uint16_t handle_cnt; 800 uint16_t cnt; 801 802 if (!ha->flags.online) 803 return; 804 805 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { 806 pkt = (sts_entry_t *)ha->response_ring_ptr; 807 808 ha->rsp_ring_index++; 809 if (ha->rsp_ring_index == ha->response_q_length) { 810 ha->rsp_ring_index = 0; 811 ha->response_ring_ptr = ha->response_ring; 812 } else { 813 ha->response_ring_ptr++; 814 } 815 816 if (pkt->entry_status != 0) { 817 DEBUG3(printk(KERN_INFO 818 "scsi(%ld): Process error entry.\n", ha->host_no)); 819 820 qla2x00_error_entry(ha, pkt); 821 ((response_t *)pkt)->signature = RESPONSE_PROCESSED; 822 wmb(); 823 continue; 824 } 825 826 switch (pkt->entry_type) { 827 case STATUS_TYPE: 828 qla2x00_status_entry(ha, pkt); 829 break; 830 case STATUS_TYPE_21: 831 handle_cnt = ((sts21_entry_t *)pkt)->handle_count; 832 for (cnt = 0; cnt < handle_cnt; cnt++) { 833 qla2x00_process_completed_request(ha, 834 ((sts21_entry_t *)pkt)->handle[cnt]); 835 } 836 break; 837 case STATUS_TYPE_22: 838 handle_cnt = ((sts22_entry_t *)pkt)->handle_count; 839 for (cnt = 0; cnt < handle_cnt; cnt++) { 840 qla2x00_process_completed_request(ha, 841 ((sts22_entry_t *)pkt)->handle[cnt]); 842 } 843 break; 844 case STATUS_CONT_TYPE: 845 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt); 846 break; 847 default: 848 /* Type Not Supported. */ 849 DEBUG4(printk(KERN_WARNING 850 "scsi(%ld): Received unknown response pkt type %x " 851 "entry status=%x.\n", 852 ha->host_no, pkt->entry_type, pkt->entry_status)); 853 break; 854 } 855 ((response_t *)pkt)->signature = RESPONSE_PROCESSED; 856 wmb(); 857 } 858 859 /* Adjust ring index */ 860 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index); 861 } 862 863 static inline void 864 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len) 865 { 866 struct scsi_cmnd *cp = sp->cmd; 867 868 if (sense_len >= SCSI_SENSE_BUFFERSIZE) 869 sense_len = SCSI_SENSE_BUFFERSIZE; 870 871 CMD_ACTUAL_SNSLEN(cp) = sense_len; 872 sp->request_sense_length = sense_len; 873 sp->request_sense_ptr = cp->sense_buffer; 874 if (sp->request_sense_length > 32) 875 sense_len = 32; 876 877 memcpy(cp->sense_buffer, sense_data, sense_len); 878 879 sp->request_sense_ptr += sense_len; 880 sp->request_sense_length -= sense_len; 881 if (sp->request_sense_length != 0) 882 sp->ha->status_srb = sp; 883 884 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) " 885 "cmd=%p pid=%ld\n", __func__, sp->ha->host_no, cp->device->channel, 886 cp->device->id, cp->device->lun, cp, cp->serial_number)); 887 if (sense_len) 888 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, 889 CMD_ACTUAL_SNSLEN(cp))); 890 } 891 892 /** 893 * qla2x00_status_entry() - Process a Status IOCB entry. 894 * @ha: SCSI driver HA context 895 * @pkt: Entry pointer 896 */ 897 static void 898 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt) 899 { 900 srb_t *sp; 901 fc_port_t *fcport; 902 struct scsi_cmnd *cp; 903 sts_entry_t *sts; 904 struct sts_entry_24xx *sts24; 905 uint16_t comp_status; 906 uint16_t scsi_status; 907 uint8_t lscsi_status; 908 int32_t resid; 909 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len; 910 uint8_t *rsp_info, *sense_data; 911 912 sts = (sts_entry_t *) pkt; 913 sts24 = (struct sts_entry_24xx *) pkt; 914 if (IS_FWI2_CAPABLE(ha)) { 915 comp_status = le16_to_cpu(sts24->comp_status); 916 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK; 917 } else { 918 comp_status = le16_to_cpu(sts->comp_status); 919 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK; 920 } 921 922 /* Fast path completion. */ 923 if (comp_status == CS_COMPLETE && scsi_status == 0) { 924 qla2x00_process_completed_request(ha, sts->handle); 925 926 return; 927 } 928 929 /* Validate handle. */ 930 if (sts->handle < MAX_OUTSTANDING_COMMANDS) { 931 sp = ha->outstanding_cmds[sts->handle]; 932 ha->outstanding_cmds[sts->handle] = NULL; 933 } else 934 sp = NULL; 935 936 if (sp == NULL) { 937 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n", 938 ha->host_no)); 939 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n"); 940 941 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 942 qla2xxx_wake_dpc(ha); 943 return; 944 } 945 cp = sp->cmd; 946 if (cp == NULL) { 947 DEBUG2(printk("scsi(%ld): Command already returned back to OS " 948 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp)); 949 qla_printk(KERN_WARNING, ha, 950 "Command is NULL: already returned to OS (sp=%p)\n", sp); 951 952 return; 953 } 954 955 lscsi_status = scsi_status & STATUS_MASK; 956 CMD_ENTRY_STATUS(cp) = sts->entry_status; 957 CMD_COMPL_STATUS(cp) = comp_status; 958 CMD_SCSI_STATUS(cp) = scsi_status; 959 960 fcport = sp->fcport; 961 962 sense_len = rsp_info_len = resid_len = fw_resid_len = 0; 963 if (IS_FWI2_CAPABLE(ha)) { 964 sense_len = le32_to_cpu(sts24->sense_len); 965 rsp_info_len = le32_to_cpu(sts24->rsp_data_len); 966 resid_len = le32_to_cpu(sts24->rsp_residual_count); 967 fw_resid_len = le32_to_cpu(sts24->residual_len); 968 rsp_info = sts24->data; 969 sense_data = sts24->data; 970 host_to_fcp_swap(sts24->data, sizeof(sts24->data)); 971 } else { 972 sense_len = le16_to_cpu(sts->req_sense_length); 973 rsp_info_len = le16_to_cpu(sts->rsp_info_len); 974 resid_len = le32_to_cpu(sts->residual_length); 975 rsp_info = sts->rsp_info; 976 sense_data = sts->req_sense_data; 977 } 978 979 /* Check for any FCP transport errors. */ 980 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) { 981 /* Sense data lies beyond any FCP RESPONSE data. */ 982 if (IS_FWI2_CAPABLE(ha)) 983 sense_data += rsp_info_len; 984 if (rsp_info_len > 3 && rsp_info[3]) { 985 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol " 986 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..." 987 "retrying command\n", ha->host_no, 988 cp->device->channel, cp->device->id, 989 cp->device->lun, rsp_info_len, rsp_info[0], 990 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4], 991 rsp_info[5], rsp_info[6], rsp_info[7])); 992 993 cp->result = DID_BUS_BUSY << 16; 994 qla2x00_sp_compl(ha, sp); 995 return; 996 } 997 } 998 999 /* Check for overrun. */ 1000 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE && 1001 scsi_status & SS_RESIDUAL_OVER) 1002 comp_status = CS_DATA_OVERRUN; 1003 1004 /* 1005 * Based on Host and scsi status generate status code for Linux 1006 */ 1007 switch (comp_status) { 1008 case CS_COMPLETE: 1009 case CS_QUEUE_FULL: 1010 if (scsi_status == 0) { 1011 cp->result = DID_OK << 16; 1012 break; 1013 } 1014 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) { 1015 resid = resid_len; 1016 scsi_set_resid(cp, resid); 1017 CMD_RESID_LEN(cp) = resid; 1018 1019 if (!lscsi_status && 1020 ((unsigned)(scsi_bufflen(cp) - resid) < 1021 cp->underflow)) { 1022 qla_printk(KERN_INFO, ha, 1023 "scsi(%ld:%d:%d:%d): Mid-layer underflow " 1024 "detected (%x of %x bytes)...returning " 1025 "error status.\n", ha->host_no, 1026 cp->device->channel, cp->device->id, 1027 cp->device->lun, resid, 1028 scsi_bufflen(cp)); 1029 1030 cp->result = DID_ERROR << 16; 1031 break; 1032 } 1033 } 1034 cp->result = DID_OK << 16 | lscsi_status; 1035 1036 if (lscsi_status == SAM_STAT_TASK_SET_FULL) { 1037 DEBUG2(printk(KERN_INFO 1038 "scsi(%ld): QUEUE FULL status detected " 1039 "0x%x-0x%x.\n", ha->host_no, comp_status, 1040 scsi_status)); 1041 1042 /* Adjust queue depth for all luns on the port. */ 1043 fcport->last_queue_full = jiffies; 1044 starget_for_each_device(cp->device->sdev_target, 1045 fcport, qla2x00_adjust_sdev_qdepth_down); 1046 break; 1047 } 1048 if (lscsi_status != SS_CHECK_CONDITION) 1049 break; 1050 1051 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 1052 if (!(scsi_status & SS_SENSE_LEN_VALID)) 1053 break; 1054 1055 qla2x00_handle_sense(sp, sense_data, sense_len); 1056 break; 1057 1058 case CS_DATA_UNDERRUN: 1059 resid = resid_len; 1060 /* Use F/W calculated residual length. */ 1061 if (IS_FWI2_CAPABLE(ha)) { 1062 if (scsi_status & SS_RESIDUAL_UNDER && 1063 resid != fw_resid_len) { 1064 scsi_status &= ~SS_RESIDUAL_UNDER; 1065 lscsi_status = 0; 1066 } 1067 resid = fw_resid_len; 1068 } 1069 1070 if (scsi_status & SS_RESIDUAL_UNDER) { 1071 scsi_set_resid(cp, resid); 1072 CMD_RESID_LEN(cp) = resid; 1073 } else { 1074 DEBUG2(printk(KERN_INFO 1075 "scsi(%ld:%d:%d) UNDERRUN status detected " 1076 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x " 1077 "os_underflow=0x%x\n", ha->host_no, 1078 cp->device->id, cp->device->lun, comp_status, 1079 scsi_status, resid_len, resid, cp->cmnd[0], 1080 cp->underflow)); 1081 1082 } 1083 1084 /* 1085 * Check to see if SCSI Status is non zero. If so report SCSI 1086 * Status. 1087 */ 1088 if (lscsi_status != 0) { 1089 cp->result = DID_OK << 16 | lscsi_status; 1090 1091 if (lscsi_status == SAM_STAT_TASK_SET_FULL) { 1092 DEBUG2(printk(KERN_INFO 1093 "scsi(%ld): QUEUE FULL status detected " 1094 "0x%x-0x%x.\n", ha->host_no, comp_status, 1095 scsi_status)); 1096 1097 /* 1098 * Adjust queue depth for all luns on the 1099 * port. 1100 */ 1101 fcport->last_queue_full = jiffies; 1102 starget_for_each_device( 1103 cp->device->sdev_target, fcport, 1104 qla2x00_adjust_sdev_qdepth_down); 1105 break; 1106 } 1107 if (lscsi_status != SS_CHECK_CONDITION) 1108 break; 1109 1110 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 1111 if (!(scsi_status & SS_SENSE_LEN_VALID)) 1112 break; 1113 1114 qla2x00_handle_sense(sp, sense_data, sense_len); 1115 } else { 1116 /* 1117 * If RISC reports underrun and target does not report 1118 * it then we must have a lost frame, so tell upper 1119 * layer to retry it by reporting a bus busy. 1120 */ 1121 if (!(scsi_status & SS_RESIDUAL_UNDER)) { 1122 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped " 1123 "frame(s) detected (%x of %x bytes)..." 1124 "retrying command.\n", ha->host_no, 1125 cp->device->channel, cp->device->id, 1126 cp->device->lun, resid, 1127 scsi_bufflen(cp))); 1128 1129 cp->result = DID_BUS_BUSY << 16; 1130 break; 1131 } 1132 1133 /* Handle mid-layer underflow */ 1134 if ((unsigned)(scsi_bufflen(cp) - resid) < 1135 cp->underflow) { 1136 qla_printk(KERN_INFO, ha, 1137 "scsi(%ld:%d:%d:%d): Mid-layer underflow " 1138 "detected (%x of %x bytes)...returning " 1139 "error status.\n", ha->host_no, 1140 cp->device->channel, cp->device->id, 1141 cp->device->lun, resid, 1142 scsi_bufflen(cp)); 1143 1144 cp->result = DID_ERROR << 16; 1145 break; 1146 } 1147 1148 /* Everybody online, looking good... */ 1149 cp->result = DID_OK << 16; 1150 } 1151 break; 1152 1153 case CS_DATA_OVERRUN: 1154 DEBUG2(printk(KERN_INFO 1155 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n", 1156 ha->host_no, cp->device->id, cp->device->lun, comp_status, 1157 scsi_status)); 1158 DEBUG2(printk(KERN_INFO 1159 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 1160 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3], 1161 cp->cmnd[4], cp->cmnd[5])); 1162 DEBUG2(printk(KERN_INFO 1163 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR " 1164 "status!\n", 1165 cp->serial_number, scsi_bufflen(cp), resid_len)); 1166 1167 cp->result = DID_ERROR << 16; 1168 break; 1169 1170 case CS_PORT_LOGGED_OUT: 1171 case CS_PORT_CONFIG_CHG: 1172 case CS_PORT_BUSY: 1173 case CS_INCOMPLETE: 1174 case CS_PORT_UNAVAILABLE: 1175 /* 1176 * If the port is in Target Down state, return all IOs for this 1177 * Target with DID_NO_CONNECT ELSE Queue the IOs in the 1178 * retry_queue. 1179 */ 1180 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down " 1181 "pid=%ld, compl status=0x%x, port state=0x%x\n", 1182 ha->host_no, cp->device->id, cp->device->lun, 1183 cp->serial_number, comp_status, 1184 atomic_read(&fcport->state))); 1185 1186 cp->result = DID_BUS_BUSY << 16; 1187 if (atomic_read(&fcport->state) == FCS_ONLINE) { 1188 qla2x00_mark_device_lost(ha, fcport, 1, 1); 1189 } 1190 break; 1191 1192 case CS_RESET: 1193 DEBUG2(printk(KERN_INFO 1194 "scsi(%ld): RESET status detected 0x%x-0x%x.\n", 1195 ha->host_no, comp_status, scsi_status)); 1196 1197 cp->result = DID_RESET << 16; 1198 break; 1199 1200 case CS_ABORTED: 1201 /* 1202 * hv2.19.12 - DID_ABORT does not retry the request if we 1203 * aborted this request then abort otherwise it must be a 1204 * reset. 1205 */ 1206 DEBUG2(printk(KERN_INFO 1207 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n", 1208 ha->host_no, comp_status, scsi_status)); 1209 1210 cp->result = DID_RESET << 16; 1211 break; 1212 1213 case CS_TIMEOUT: 1214 cp->result = DID_BUS_BUSY << 16; 1215 1216 if (IS_FWI2_CAPABLE(ha)) { 1217 DEBUG2(printk(KERN_INFO 1218 "scsi(%ld:%d:%d:%d): TIMEOUT status detected " 1219 "0x%x-0x%x\n", ha->host_no, cp->device->channel, 1220 cp->device->id, cp->device->lun, comp_status, 1221 scsi_status)); 1222 break; 1223 } 1224 DEBUG2(printk(KERN_INFO 1225 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x " 1226 "sflags=%x.\n", ha->host_no, cp->device->channel, 1227 cp->device->id, cp->device->lun, comp_status, scsi_status, 1228 le16_to_cpu(sts->status_flags))); 1229 1230 /* Check to see if logout occurred. */ 1231 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT)) 1232 qla2x00_mark_device_lost(ha, fcport, 1, 1); 1233 break; 1234 1235 default: 1236 DEBUG3(printk("scsi(%ld): Error detected (unknown status) " 1237 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status)); 1238 qla_printk(KERN_INFO, ha, 1239 "Unknown status detected 0x%x-0x%x.\n", 1240 comp_status, scsi_status); 1241 1242 cp->result = DID_ERROR << 16; 1243 break; 1244 } 1245 1246 /* Place command on done queue. */ 1247 if (ha->status_srb == NULL) 1248 qla2x00_sp_compl(ha, sp); 1249 } 1250 1251 /** 1252 * qla2x00_status_cont_entry() - Process a Status Continuations entry. 1253 * @ha: SCSI driver HA context 1254 * @pkt: Entry pointer 1255 * 1256 * Extended sense data. 1257 */ 1258 static void 1259 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt) 1260 { 1261 uint8_t sense_sz = 0; 1262 srb_t *sp = ha->status_srb; 1263 struct scsi_cmnd *cp; 1264 1265 if (sp != NULL && sp->request_sense_length != 0) { 1266 cp = sp->cmd; 1267 if (cp == NULL) { 1268 DEBUG2(printk("%s(): Cmd already returned back to OS " 1269 "sp=%p.\n", __func__, sp)); 1270 qla_printk(KERN_INFO, ha, 1271 "cmd is NULL: already returned to OS (sp=%p)\n", 1272 sp); 1273 1274 ha->status_srb = NULL; 1275 return; 1276 } 1277 1278 if (sp->request_sense_length > sizeof(pkt->data)) { 1279 sense_sz = sizeof(pkt->data); 1280 } else { 1281 sense_sz = sp->request_sense_length; 1282 } 1283 1284 /* Move sense data. */ 1285 if (IS_FWI2_CAPABLE(ha)) 1286 host_to_fcp_swap(pkt->data, sizeof(pkt->data)); 1287 memcpy(sp->request_sense_ptr, pkt->data, sense_sz); 1288 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz)); 1289 1290 sp->request_sense_ptr += sense_sz; 1291 sp->request_sense_length -= sense_sz; 1292 1293 /* Place command on done queue. */ 1294 if (sp->request_sense_length == 0) { 1295 ha->status_srb = NULL; 1296 qla2x00_sp_compl(ha, sp); 1297 } 1298 } 1299 } 1300 1301 /** 1302 * qla2x00_error_entry() - Process an error entry. 1303 * @ha: SCSI driver HA context 1304 * @pkt: Entry pointer 1305 */ 1306 static void 1307 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) 1308 { 1309 srb_t *sp; 1310 1311 #if defined(QL_DEBUG_LEVEL_2) 1312 if (pkt->entry_status & RF_INV_E_ORDER) 1313 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__); 1314 else if (pkt->entry_status & RF_INV_E_COUNT) 1315 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__); 1316 else if (pkt->entry_status & RF_INV_E_PARAM) 1317 qla_printk(KERN_ERR, ha, 1318 "%s: Invalid Entry Parameter\n", __func__); 1319 else if (pkt->entry_status & RF_INV_E_TYPE) 1320 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__); 1321 else if (pkt->entry_status & RF_BUSY) 1322 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__); 1323 else 1324 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__); 1325 #endif 1326 1327 /* Validate handle. */ 1328 if (pkt->handle < MAX_OUTSTANDING_COMMANDS) 1329 sp = ha->outstanding_cmds[pkt->handle]; 1330 else 1331 sp = NULL; 1332 1333 if (sp) { 1334 /* Free outstanding command slot. */ 1335 ha->outstanding_cmds[pkt->handle] = NULL; 1336 1337 /* Bad payload or header */ 1338 if (pkt->entry_status & 1339 (RF_INV_E_ORDER | RF_INV_E_COUNT | 1340 RF_INV_E_PARAM | RF_INV_E_TYPE)) { 1341 sp->cmd->result = DID_ERROR << 16; 1342 } else if (pkt->entry_status & RF_BUSY) { 1343 sp->cmd->result = DID_BUS_BUSY << 16; 1344 } else { 1345 sp->cmd->result = DID_ERROR << 16; 1346 } 1347 qla2x00_sp_compl(ha, sp); 1348 1349 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type == 1350 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) { 1351 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n", 1352 ha->host_no)); 1353 qla_printk(KERN_WARNING, ha, 1354 "Error entry - invalid handle\n"); 1355 1356 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 1357 qla2xxx_wake_dpc(ha); 1358 } 1359 } 1360 1361 /** 1362 * qla24xx_mbx_completion() - Process mailbox command completions. 1363 * @ha: SCSI driver HA context 1364 * @mb0: Mailbox0 register 1365 */ 1366 static void 1367 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0) 1368 { 1369 uint16_t cnt; 1370 uint16_t __iomem *wptr; 1371 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; 1372 1373 /* Load return mailbox registers. */ 1374 ha->flags.mbox_int = 1; 1375 ha->mailbox_out[0] = mb0; 1376 wptr = (uint16_t __iomem *)®->mailbox1; 1377 1378 for (cnt = 1; cnt < ha->mbx_count; cnt++) { 1379 ha->mailbox_out[cnt] = RD_REG_WORD(wptr); 1380 wptr++; 1381 } 1382 1383 if (ha->mcp) { 1384 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n", 1385 __func__, ha->host_no, ha->mcp->mb[0])); 1386 } else { 1387 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n", 1388 __func__, ha->host_no)); 1389 } 1390 } 1391 1392 /** 1393 * qla24xx_process_response_queue() - Process response queue entries. 1394 * @ha: SCSI driver HA context 1395 */ 1396 void 1397 qla24xx_process_response_queue(struct scsi_qla_host *ha) 1398 { 1399 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; 1400 struct sts_entry_24xx *pkt; 1401 1402 if (!ha->flags.online) 1403 return; 1404 1405 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { 1406 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr; 1407 1408 ha->rsp_ring_index++; 1409 if (ha->rsp_ring_index == ha->response_q_length) { 1410 ha->rsp_ring_index = 0; 1411 ha->response_ring_ptr = ha->response_ring; 1412 } else { 1413 ha->response_ring_ptr++; 1414 } 1415 1416 if (pkt->entry_status != 0) { 1417 DEBUG3(printk(KERN_INFO 1418 "scsi(%ld): Process error entry.\n", ha->host_no)); 1419 1420 qla2x00_error_entry(ha, (sts_entry_t *) pkt); 1421 ((response_t *)pkt)->signature = RESPONSE_PROCESSED; 1422 wmb(); 1423 continue; 1424 } 1425 1426 switch (pkt->entry_type) { 1427 case STATUS_TYPE: 1428 qla2x00_status_entry(ha, pkt); 1429 break; 1430 case STATUS_CONT_TYPE: 1431 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt); 1432 break; 1433 case VP_RPT_ID_IOCB_TYPE: 1434 qla24xx_report_id_acquisition(ha, 1435 (struct vp_rpt_id_entry_24xx *)pkt); 1436 break; 1437 default: 1438 /* Type Not Supported. */ 1439 DEBUG4(printk(KERN_WARNING 1440 "scsi(%ld): Received unknown response pkt type %x " 1441 "entry status=%x.\n", 1442 ha->host_no, pkt->entry_type, pkt->entry_status)); 1443 break; 1444 } 1445 ((response_t *)pkt)->signature = RESPONSE_PROCESSED; 1446 wmb(); 1447 } 1448 1449 /* Adjust ring index */ 1450 WRT_REG_DWORD(®->rsp_q_out, ha->rsp_ring_index); 1451 } 1452 1453 static void 1454 qla2xxx_check_risc_status(scsi_qla_host_t *ha) 1455 { 1456 int rval; 1457 uint32_t cnt; 1458 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; 1459 1460 if (!IS_QLA25XX(ha)) 1461 return; 1462 1463 rval = QLA_SUCCESS; 1464 WRT_REG_DWORD(®->iobase_addr, 0x7C00); 1465 RD_REG_DWORD(®->iobase_addr); 1466 WRT_REG_DWORD(®->iobase_window, 0x0001); 1467 for (cnt = 10000; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 && 1468 rval == QLA_SUCCESS; cnt--) { 1469 if (cnt) { 1470 WRT_REG_DWORD(®->iobase_window, 0x0001); 1471 udelay(10); 1472 } else 1473 rval = QLA_FUNCTION_TIMEOUT; 1474 } 1475 if (rval == QLA_SUCCESS) 1476 goto next_test; 1477 1478 WRT_REG_DWORD(®->iobase_window, 0x0003); 1479 for (cnt = 100; (RD_REG_DWORD(®->iobase_window) & BIT_0) == 0 && 1480 rval == QLA_SUCCESS; cnt--) { 1481 if (cnt) { 1482 WRT_REG_DWORD(®->iobase_window, 0x0003); 1483 udelay(10); 1484 } else 1485 rval = QLA_FUNCTION_TIMEOUT; 1486 } 1487 if (rval != QLA_SUCCESS) 1488 goto done; 1489 1490 next_test: 1491 if (RD_REG_DWORD(®->iobase_c8) & BIT_3) 1492 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n"); 1493 1494 done: 1495 WRT_REG_DWORD(®->iobase_window, 0x0000); 1496 RD_REG_DWORD(®->iobase_window); 1497 } 1498 1499 /** 1500 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx. 1501 * @irq: 1502 * @dev_id: SCSI driver HA context 1503 * 1504 * Called by system whenever the host adapter generates an interrupt. 1505 * 1506 * Returns handled flag. 1507 */ 1508 irqreturn_t 1509 qla24xx_intr_handler(int irq, void *dev_id) 1510 { 1511 scsi_qla_host_t *ha; 1512 struct device_reg_24xx __iomem *reg; 1513 int status; 1514 unsigned long iter; 1515 uint32_t stat; 1516 uint32_t hccr; 1517 uint16_t mb[4]; 1518 1519 ha = (scsi_qla_host_t *) dev_id; 1520 if (!ha) { 1521 printk(KERN_INFO 1522 "%s(): NULL host pointer\n", __func__); 1523 return IRQ_NONE; 1524 } 1525 1526 reg = &ha->iobase->isp24; 1527 status = 0; 1528 1529 spin_lock(&ha->hardware_lock); 1530 for (iter = 50; iter--; ) { 1531 stat = RD_REG_DWORD(®->host_status); 1532 if (stat & HSRX_RISC_PAUSED) { 1533 if (pci_channel_offline(ha->pdev)) 1534 break; 1535 1536 if (ha->hw_event_pause_errors == 0) 1537 qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR, 1538 0, MSW(stat), LSW(stat)); 1539 else if (ha->hw_event_pause_errors < 0xffffffff) 1540 ha->hw_event_pause_errors++; 1541 1542 hccr = RD_REG_DWORD(®->hccr); 1543 1544 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, " 1545 "Dumping firmware!\n", hccr); 1546 1547 qla2xxx_check_risc_status(ha); 1548 1549 ha->isp_ops->fw_dump(ha, 1); 1550 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 1551 break; 1552 } else if ((stat & HSRX_RISC_INT) == 0) 1553 break; 1554 1555 switch (stat & 0xff) { 1556 case 0x1: 1557 case 0x2: 1558 case 0x10: 1559 case 0x11: 1560 qla24xx_mbx_completion(ha, MSW(stat)); 1561 status |= MBX_INTERRUPT; 1562 1563 break; 1564 case 0x12: 1565 mb[0] = MSW(stat); 1566 mb[1] = RD_REG_WORD(®->mailbox1); 1567 mb[2] = RD_REG_WORD(®->mailbox2); 1568 mb[3] = RD_REG_WORD(®->mailbox3); 1569 qla2x00_async_event(ha, mb); 1570 break; 1571 case 0x13: 1572 qla24xx_process_response_queue(ha); 1573 break; 1574 default: 1575 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " 1576 "(%d).\n", 1577 ha->host_no, stat & 0xff)); 1578 break; 1579 } 1580 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); 1581 RD_REG_DWORD_RELAXED(®->hccr); 1582 } 1583 spin_unlock(&ha->hardware_lock); 1584 1585 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && 1586 (status & MBX_INTERRUPT) && ha->flags.mbox_int) { 1587 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); 1588 complete(&ha->mbx_intr_comp); 1589 } 1590 1591 return IRQ_HANDLED; 1592 } 1593 1594 static irqreturn_t 1595 qla24xx_msix_rsp_q(int irq, void *dev_id) 1596 { 1597 scsi_qla_host_t *ha; 1598 struct device_reg_24xx __iomem *reg; 1599 1600 ha = dev_id; 1601 reg = &ha->iobase->isp24; 1602 1603 spin_lock_irq(&ha->hardware_lock); 1604 1605 qla24xx_process_response_queue(ha); 1606 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); 1607 1608 spin_unlock_irq(&ha->hardware_lock); 1609 1610 return IRQ_HANDLED; 1611 } 1612 1613 static irqreturn_t 1614 qla24xx_msix_default(int irq, void *dev_id) 1615 { 1616 scsi_qla_host_t *ha; 1617 struct device_reg_24xx __iomem *reg; 1618 int status; 1619 uint32_t stat; 1620 uint32_t hccr; 1621 uint16_t mb[4]; 1622 1623 ha = dev_id; 1624 reg = &ha->iobase->isp24; 1625 status = 0; 1626 1627 spin_lock_irq(&ha->hardware_lock); 1628 do { 1629 stat = RD_REG_DWORD(®->host_status); 1630 if (stat & HSRX_RISC_PAUSED) { 1631 if (pci_channel_offline(ha->pdev)) 1632 break; 1633 1634 if (ha->hw_event_pause_errors == 0) 1635 qla2x00_post_hwe_work(ha, HW_EVENT_PARITY_ERR, 1636 0, MSW(stat), LSW(stat)); 1637 else if (ha->hw_event_pause_errors < 0xffffffff) 1638 ha->hw_event_pause_errors++; 1639 1640 hccr = RD_REG_DWORD(®->hccr); 1641 1642 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, " 1643 "Dumping firmware!\n", hccr); 1644 1645 qla2xxx_check_risc_status(ha); 1646 1647 ha->isp_ops->fw_dump(ha, 1); 1648 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); 1649 break; 1650 } else if ((stat & HSRX_RISC_INT) == 0) 1651 break; 1652 1653 switch (stat & 0xff) { 1654 case 0x1: 1655 case 0x2: 1656 case 0x10: 1657 case 0x11: 1658 qla24xx_mbx_completion(ha, MSW(stat)); 1659 status |= MBX_INTERRUPT; 1660 1661 break; 1662 case 0x12: 1663 mb[0] = MSW(stat); 1664 mb[1] = RD_REG_WORD(®->mailbox1); 1665 mb[2] = RD_REG_WORD(®->mailbox2); 1666 mb[3] = RD_REG_WORD(®->mailbox3); 1667 qla2x00_async_event(ha, mb); 1668 break; 1669 case 0x13: 1670 qla24xx_process_response_queue(ha); 1671 break; 1672 default: 1673 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type " 1674 "(%d).\n", 1675 ha->host_no, stat & 0xff)); 1676 break; 1677 } 1678 WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); 1679 } while (0); 1680 spin_unlock_irq(&ha->hardware_lock); 1681 1682 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) && 1683 (status & MBX_INTERRUPT) && ha->flags.mbox_int) { 1684 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags); 1685 complete(&ha->mbx_intr_comp); 1686 } 1687 1688 return IRQ_HANDLED; 1689 } 1690 1691 /* Interrupt handling helpers. */ 1692 1693 struct qla_init_msix_entry { 1694 uint16_t entry; 1695 uint16_t index; 1696 const char *name; 1697 irq_handler_t handler; 1698 }; 1699 1700 static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = { 1701 { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT, 1702 "qla2xxx (default)", qla24xx_msix_default }, 1703 1704 { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q, 1705 "qla2xxx (rsp_q)", qla24xx_msix_rsp_q }, 1706 }; 1707 1708 static void 1709 qla24xx_disable_msix(scsi_qla_host_t *ha) 1710 { 1711 int i; 1712 struct qla_msix_entry *qentry; 1713 1714 for (i = 0; i < QLA_MSIX_ENTRIES; i++) { 1715 qentry = &ha->msix_entries[imsix_entries[i].index]; 1716 if (qentry->have_irq) 1717 free_irq(qentry->msix_vector, ha); 1718 } 1719 pci_disable_msix(ha->pdev); 1720 } 1721 1722 static int 1723 qla24xx_enable_msix(scsi_qla_host_t *ha) 1724 { 1725 int i, ret; 1726 struct msix_entry entries[QLA_MSIX_ENTRIES]; 1727 struct qla_msix_entry *qentry; 1728 1729 for (i = 0; i < QLA_MSIX_ENTRIES; i++) 1730 entries[i].entry = imsix_entries[i].entry; 1731 1732 ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries)); 1733 if (ret) { 1734 qla_printk(KERN_WARNING, ha, 1735 "MSI-X: Failed to enable support -- %d/%d\n", 1736 QLA_MSIX_ENTRIES, ret); 1737 goto msix_out; 1738 } 1739 ha->flags.msix_enabled = 1; 1740 1741 for (i = 0; i < QLA_MSIX_ENTRIES; i++) { 1742 qentry = &ha->msix_entries[imsix_entries[i].index]; 1743 qentry->msix_vector = entries[i].vector; 1744 qentry->msix_entry = entries[i].entry; 1745 qentry->have_irq = 0; 1746 ret = request_irq(qentry->msix_vector, 1747 imsix_entries[i].handler, 0, imsix_entries[i].name, ha); 1748 if (ret) { 1749 qla_printk(KERN_WARNING, ha, 1750 "MSI-X: Unable to register handler -- %x/%d.\n", 1751 imsix_entries[i].index, ret); 1752 qla24xx_disable_msix(ha); 1753 goto msix_out; 1754 } 1755 qentry->have_irq = 1; 1756 } 1757 1758 msix_out: 1759 return ret; 1760 } 1761 1762 int 1763 qla2x00_request_irqs(scsi_qla_host_t *ha) 1764 { 1765 int ret; 1766 device_reg_t __iomem *reg = ha->iobase; 1767 1768 /* If possible, enable MSI-X. */ 1769 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha)) 1770 goto skip_msix; 1771 1772 if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX || 1773 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) { 1774 DEBUG2(qla_printk(KERN_WARNING, ha, 1775 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n", 1776 ha->chip_revision, ha->fw_attributes)); 1777 1778 goto skip_msix; 1779 } 1780 1781 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP && 1782 (ha->pdev->subsystem_device == 0x7040 || 1783 ha->pdev->subsystem_device == 0x7041 || 1784 ha->pdev->subsystem_device == 0x1705)) { 1785 DEBUG2(qla_printk(KERN_WARNING, ha, 1786 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n", 1787 ha->pdev->subsystem_vendor, 1788 ha->pdev->subsystem_device)); 1789 1790 goto skip_msi; 1791 } 1792 1793 ret = qla24xx_enable_msix(ha); 1794 if (!ret) { 1795 DEBUG2(qla_printk(KERN_INFO, ha, 1796 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision, 1797 ha->fw_attributes)); 1798 goto clear_risc_ints; 1799 } 1800 qla_printk(KERN_WARNING, ha, 1801 "MSI-X: Falling back-to INTa mode -- %d.\n", ret); 1802 skip_msix: 1803 1804 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha)) 1805 goto skip_msi; 1806 1807 ret = pci_enable_msi(ha->pdev); 1808 if (!ret) { 1809 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n")); 1810 ha->flags.msi_enabled = 1; 1811 } 1812 skip_msi: 1813 1814 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler, 1815 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha); 1816 if (ret) { 1817 qla_printk(KERN_WARNING, ha, 1818 "Failed to reserve interrupt %d already in use.\n", 1819 ha->pdev->irq); 1820 goto fail; 1821 } 1822 ha->flags.inta_enabled = 1; 1823 ha->host->irq = ha->pdev->irq; 1824 clear_risc_ints: 1825 1826 ha->isp_ops->disable_intrs(ha); 1827 spin_lock_irq(&ha->hardware_lock); 1828 if (IS_FWI2_CAPABLE(ha)) { 1829 WRT_REG_DWORD(®->isp24.hccr, HCCRX_CLR_HOST_INT); 1830 WRT_REG_DWORD(®->isp24.hccr, HCCRX_CLR_RISC_INT); 1831 } else { 1832 WRT_REG_WORD(®->isp.semaphore, 0); 1833 WRT_REG_WORD(®->isp.hccr, HCCR_CLR_RISC_INT); 1834 WRT_REG_WORD(®->isp.hccr, HCCR_CLR_HOST_INT); 1835 } 1836 spin_unlock_irq(&ha->hardware_lock); 1837 ha->isp_ops->enable_intrs(ha); 1838 1839 fail: 1840 return ret; 1841 } 1842 1843 void 1844 qla2x00_free_irqs(scsi_qla_host_t *ha) 1845 { 1846 1847 if (ha->flags.msix_enabled) 1848 qla24xx_disable_msix(ha); 1849 else if (ha->flags.inta_enabled) { 1850 free_irq(ha->host->irq, ha); 1851 pci_disable_msi(ha->pdev); 1852 } 1853 } 1854